1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992-2011 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #if defined HAVE_LIBPNG_PNG_H
27 # include <libpng/png.h>
35 /* This makes the fields of a Display accessible, in Xlib header files. */
37 #define XLIB_ILLEGAL_ACCESS
42 #include "dispextern.h"
43 #include "blockinput.h"
46 #include "character.h"
48 #include "termhooks.h"
53 #include <sys/types.h>
56 #define COLOR_TABLE_SUPPORT 1
58 typedef struct x_bitmap_record Bitmap_Record
;
59 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
60 #define NO_PIXMAP None
62 #define RGB_PIXEL_COLOR unsigned long
64 #define PIX_MASK_RETAIN 0
65 #define PIX_MASK_DRAW 1
66 #endif /* HAVE_X_WINDOWS */
72 /* W32_TODO : Color tables on W32. */
73 #undef COLOR_TABLE_SUPPORT
75 typedef struct w32_bitmap_record Bitmap_Record
;
76 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
79 #define RGB_PIXEL_COLOR COLORREF
81 #define PIX_MASK_RETAIN 0
82 #define PIX_MASK_DRAW 1
84 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
85 #define x_defined_color w32_defined_color
86 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
88 /* Functions from w32term.c that depend on XColor (so can't go in w32term.h
89 without modifying lots of files). */
90 extern void x_query_colors (struct frame
*f
, XColor
*colors
, int ncolors
);
91 extern void x_query_color (struct frame
*f
, XColor
*color
);
93 /* Version of libpng that we were compiled with, or -1 if no PNG
94 support was compiled in. This is tested by w32-win.el to correctly
95 set up the alist used to search for PNG libraries. */
96 Lisp_Object Qlibpng_version
;
97 #endif /* HAVE_NTGUI */
101 #include <sys/types.h>
102 #include <sys/stat.h>
104 #undef COLOR_TABLE_SUPPORT
106 typedef struct ns_bitmap_record Bitmap_Record
;
108 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
111 #define RGB_PIXEL_COLOR unsigned long
114 #define PIX_MASK_RETAIN 0
115 #define PIX_MASK_DRAW 1
117 #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual
118 #define x_defined_color(f, name, color_def, alloc) \
119 ns_defined_color (f, name, color_def, alloc, 0)
120 #define FRAME_X_SCREEN(f) 0
121 #define DefaultDepthOfScreen(screen) x_display_list->n_planes
125 /* The symbol `postscript' identifying images of this type. */
127 Lisp_Object Qpostscript
;
129 static void x_disable_image (struct frame
*, struct image
*);
130 static void x_edge_detection (struct frame
*, struct image
*, Lisp_Object
,
133 static void init_color_table (void);
134 static unsigned long lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
);
135 #ifdef COLOR_TABLE_SUPPORT
136 static void free_color_table (void);
137 static unsigned long *colors_in_color_table (int *n
);
138 static unsigned long lookup_pixel_color (struct frame
*f
, unsigned long p
);
141 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
142 id, which is just an int that this section returns. Bitmaps are
143 reference counted so they can be shared among frames.
145 Bitmap indices are guaranteed to be > 0, so a negative number can
146 be used to indicate no bitmap.
148 If you use x_create_bitmap_from_data, then you must keep track of
149 the bitmaps yourself. That is, creating a bitmap from the same
150 data more than once will not be caught. */
154 XGetImage (Display
*display
, Pixmap pixmap
, int x
, int y
,
155 unsigned int width
, unsigned int height
,
156 unsigned long plane_mask
, int format
)
158 /* TODO: not sure what this function is supposed to do.. */
159 ns_retain_object (pixmap
);
163 /* use with imgs created by ns_image_for_XPM */
165 XGetPixel (XImagePtr ximage
, int x
, int y
)
167 return ns_get_pixel (ximage
, x
, y
);
170 /* use with imgs created by ns_image_for_XPM; alpha set to 1;
171 pixel is assumed to be in form RGB */
173 XPutPixel (XImagePtr ximage
, int x
, int y
, unsigned long pixel
)
175 ns_put_pixel (ximage
, x
, y
, pixel
);
180 /* Functions to access the contents of a bitmap, given an id. */
183 x_bitmap_height (FRAME_PTR f
, int id
)
185 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
189 x_bitmap_width (FRAME_PTR f
, int id
)
191 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
194 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
196 x_bitmap_pixmap (FRAME_PTR f
, int id
)
198 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
202 #ifdef HAVE_X_WINDOWS
204 x_bitmap_mask (FRAME_PTR f
, int id
)
206 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
210 /* Allocate a new bitmap record. Returns index of new record. */
213 x_allocate_bitmap_record (FRAME_PTR f
)
215 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
218 if (dpyinfo
->bitmaps
== NULL
)
220 dpyinfo
->bitmaps_size
= 10;
222 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
223 dpyinfo
->bitmaps_last
= 1;
227 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
228 return ++dpyinfo
->bitmaps_last
;
230 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
231 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
234 dpyinfo
->bitmaps_size
*= 2;
236 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
237 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
238 return ++dpyinfo
->bitmaps_last
;
241 /* Add one reference to the reference count of the bitmap with id ID. */
244 x_reference_bitmap (FRAME_PTR f
, int id
)
246 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
249 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
252 x_create_bitmap_from_data (struct frame
*f
, char *bits
, unsigned int width
, unsigned int height
)
254 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
257 #ifdef HAVE_X_WINDOWS
259 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
260 bits
, width
, height
);
263 #endif /* HAVE_X_WINDOWS */
267 bitmap
= CreateBitmap (width
, height
,
268 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
269 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
273 #endif /* HAVE_NTGUI */
276 void *bitmap
= ns_image_from_XBM (bits
, width
, height
);
281 id
= x_allocate_bitmap_record (f
);
284 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
285 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
288 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
289 dpyinfo
->bitmaps
[id
- 1].height
= height
;
290 dpyinfo
->bitmaps
[id
- 1].width
= width
;
291 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
293 #ifdef HAVE_X_WINDOWS
294 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
295 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
296 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
297 #endif /* HAVE_X_WINDOWS */
300 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
301 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
302 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
303 #endif /* HAVE_NTGUI */
308 /* Create bitmap from file FILE for frame F. */
311 x_create_bitmap_from_file (struct frame
*f
, Lisp_Object file
)
313 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
316 return -1; /* W32_TODO : bitmap support */
317 #endif /* HAVE_NTGUI */
321 void *bitmap
= ns_image_from_file (file
);
327 id
= x_allocate_bitmap_record (f
);
328 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
329 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
330 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
331 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
332 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width (bitmap
);
333 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height (bitmap
);
334 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
338 #ifdef HAVE_X_WINDOWS
339 unsigned int width
, height
;
341 int xhot
, yhot
, result
, id
;
346 /* Look for an existing bitmap with the same name. */
347 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
349 if (dpyinfo
->bitmaps
[id
].refcount
350 && dpyinfo
->bitmaps
[id
].file
351 && !strcmp (dpyinfo
->bitmaps
[id
].file
, SSDATA (file
)))
353 ++dpyinfo
->bitmaps
[id
].refcount
;
358 /* Search bitmap-file-path for the file, if appropriate. */
359 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
364 filename
= SSDATA (found
);
366 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
367 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
368 if (result
!= BitmapSuccess
)
371 id
= x_allocate_bitmap_record (f
);
372 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
373 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
374 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
375 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
376 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
377 dpyinfo
->bitmaps
[id
- 1].height
= height
;
378 dpyinfo
->bitmaps
[id
- 1].width
= width
;
379 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SSDATA (file
));
382 #endif /* HAVE_X_WINDOWS */
388 free_bitmap_record (Display_Info
*dpyinfo
, Bitmap_Record
*bm
)
390 #ifdef HAVE_X_WINDOWS
391 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
393 XFreePixmap (dpyinfo
->display
, bm
->mask
);
394 #endif /* HAVE_X_WINDOWS */
397 DeleteObject (bm
->pixmap
);
398 #endif /* HAVE_NTGUI */
401 ns_release_object (bm
->img
);
411 /* Remove reference to bitmap with id number ID. */
414 x_destroy_bitmap (FRAME_PTR f
, int id
)
416 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
420 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
422 if (--bm
->refcount
== 0)
425 free_bitmap_record (dpyinfo
, bm
);
431 /* Free all the bitmaps for the display specified by DPYINFO. */
434 x_destroy_all_bitmaps (Display_Info
*dpyinfo
)
437 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
439 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
440 if (bm
->refcount
> 0)
441 free_bitmap_record (dpyinfo
, bm
);
443 dpyinfo
->bitmaps_last
= 0;
447 #ifdef HAVE_X_WINDOWS
449 /* Useful functions defined in the section
450 `Image type independent image structures' below. */
452 static unsigned long four_corners_best (XImagePtr ximg
,
455 unsigned long height
);
457 static int x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
,
458 int depth
, XImagePtr
*ximg
,
461 static void x_destroy_x_image (XImagePtr ximg
);
464 /* Create a mask of a bitmap. Note is this not a perfect mask.
465 It's nicer with some borders in this context */
468 x_create_bitmap_mask (struct frame
*f
, int id
)
471 XImagePtr ximg
, mask_img
;
472 unsigned long width
, height
;
475 unsigned long x
, y
, xp
, xm
, yp
, ym
;
478 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
483 pixmap
= x_bitmap_pixmap (f
, id
);
484 width
= x_bitmap_width (f
, id
);
485 height
= x_bitmap_height (f
, id
);
488 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
497 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
502 XDestroyImage (ximg
);
506 bg
= four_corners_best (ximg
, NULL
, width
, height
);
508 for (y
= 0; y
< ximg
->height
; ++y
)
510 for (x
= 0; x
< ximg
->width
; ++x
)
512 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
513 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
514 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
515 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
516 if (XGetPixel (ximg
, x
, y
) == bg
517 && XGetPixel (ximg
, x
, yp
) == bg
518 && XGetPixel (ximg
, x
, ym
) == bg
519 && XGetPixel (ximg
, xp
, y
) == bg
520 && XGetPixel (ximg
, xp
, yp
) == bg
521 && XGetPixel (ximg
, xp
, ym
) == bg
522 && XGetPixel (ximg
, xm
, y
) == bg
523 && XGetPixel (ximg
, xm
, yp
) == bg
524 && XGetPixel (ximg
, xm
, ym
) == bg
)
525 XPutPixel (mask_img
, x
, y
, 0);
527 XPutPixel (mask_img
, x
, y
, 1);
531 xassert (interrupt_input_blocked
);
532 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
533 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
535 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
537 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
538 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
540 XDestroyImage (ximg
);
541 x_destroy_x_image (mask_img
);
546 #endif /* HAVE_X_WINDOWS */
549 /***********************************************************************
551 ***********************************************************************/
553 /* List of supported image types. Use define_image_type to add new
554 types. Use lookup_image_type to find a type for a given symbol. */
556 static struct image_type
*image_types
;
558 /* Cache for delayed-loading image types. */
560 static Lisp_Object Vimage_type_cache
;
562 /* The symbol `xbm' which is used as the type symbol for XBM images. */
568 Lisp_Object QCascent
, QCmargin
, QCrelief
, Qcount
, Qextension_data
;
569 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
570 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
, QCgeometry
, QCcrop
, QCrotation
;
574 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
576 /* Function prototypes. */
578 static Lisp_Object
define_image_type (struct image_type
*type
, int loaded
);
579 static struct image_type
*lookup_image_type (Lisp_Object symbol
);
580 static void image_error (const char *format
, Lisp_Object
, Lisp_Object
);
581 static void x_laplace (struct frame
*, struct image
*);
582 static void x_emboss (struct frame
*, struct image
*);
583 static int x_build_heuristic_mask (struct frame
*, struct image
*,
586 #define CACHE_IMAGE_TYPE(type, status) \
587 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
589 #define ADD_IMAGE_TYPE(type) \
590 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
592 /* Define a new image type from TYPE. This adds a copy of TYPE to
593 image_types and caches the loading status of TYPE. */
596 define_image_type (struct image_type
*type
, int loaded
)
604 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
605 The initialized data segment is read-only. */
606 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
607 memcpy (p
, type
, sizeof *p
);
608 p
->next
= image_types
;
613 CACHE_IMAGE_TYPE (*type
->type
, success
);
618 /* Look up image type SYMBOL, and return a pointer to its image_type
619 structure. Value is null if SYMBOL is not a known image type. */
621 static INLINE
struct image_type
*
622 lookup_image_type (Lisp_Object symbol
)
624 struct image_type
*type
;
626 /* We must initialize the image-type if it hasn't been already. */
627 if (NILP (Finit_image_library (symbol
, Vdynamic_library_alist
)))
628 return 0; /* unimplemented */
630 for (type
= image_types
; type
; type
= type
->next
)
631 if (EQ (symbol
, *type
->type
))
638 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
639 valid image specification is a list whose car is the symbol
640 `image', and whose rest is a property list. The property list must
641 contain a value for key `:type'. That value must be the name of a
642 supported image type. The rest of the property list depends on the
646 valid_image_p (Lisp_Object object
)
654 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
655 if (EQ (XCAR (tem
), QCtype
))
658 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
660 struct image_type
*type
;
661 type
= lookup_image_type (XCAR (tem
));
663 valid_p
= type
->valid_p (object
);
674 /* Log error message with format string FORMAT and argument ARG.
675 Signaling an error, e.g. when an image cannot be loaded, is not a
676 good idea because this would interrupt redisplay, and the error
677 message display would lead to another redisplay. This function
678 therefore simply displays a message. */
681 image_error (const char *format
, Lisp_Object arg1
, Lisp_Object arg2
)
683 add_to_log (format
, arg1
, arg2
);
688 /***********************************************************************
690 ***********************************************************************/
692 enum image_value_type
694 IMAGE_DONT_CHECK_VALUE_TYPE
,
696 IMAGE_STRING_OR_NIL_VALUE
,
698 IMAGE_POSITIVE_INTEGER_VALUE
,
699 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
700 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
703 IMAGE_FUNCTION_VALUE
,
708 /* Structure used when parsing image specifications. */
712 /* Name of keyword. */
715 /* The type of value allowed. */
716 enum image_value_type type
;
718 /* Non-zero means key must be present. */
721 /* Used to recognize duplicate keywords in a property list. */
724 /* The value that was found. */
729 static int parse_image_spec (Lisp_Object
, struct image_keyword
*,
731 static Lisp_Object
image_spec_value (Lisp_Object
, Lisp_Object
, int *);
734 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
735 has the format (image KEYWORD VALUE ...). One of the keyword/
736 value pairs must be `:type TYPE'. KEYWORDS is a vector of
737 image_keywords structures of size NKEYWORDS describing other
738 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
741 parse_image_spec (Lisp_Object spec
, struct image_keyword
*keywords
,
742 int nkeywords
, Lisp_Object type
)
751 while (CONSP (plist
))
753 Lisp_Object key
, value
;
755 /* First element of a pair must be a symbol. */
757 plist
= XCDR (plist
);
761 /* There must follow a value. */
764 value
= XCAR (plist
);
765 plist
= XCDR (plist
);
767 /* Find key in KEYWORDS. Error if not found. */
768 for (i
= 0; i
< nkeywords
; ++i
)
769 if (strcmp (keywords
[i
].name
, SSDATA (SYMBOL_NAME (key
))) == 0)
775 /* Record that we recognized the keyword. If a keywords
776 was found more than once, it's an error. */
777 keywords
[i
].value
= value
;
780 if (keywords
[i
].count
> 1)
783 /* Check type of value against allowed type. */
784 switch (keywords
[i
].type
)
786 case IMAGE_STRING_VALUE
:
787 if (!STRINGP (value
))
791 case IMAGE_STRING_OR_NIL_VALUE
:
792 if (!STRINGP (value
) && !NILP (value
))
796 case IMAGE_SYMBOL_VALUE
:
797 if (!SYMBOLP (value
))
801 case IMAGE_POSITIVE_INTEGER_VALUE
:
802 if (!INTEGERP (value
) || XINT (value
) <= 0)
806 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
807 if (INTEGERP (value
) && XINT (value
) >= 0)
810 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
811 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
815 case IMAGE_ASCENT_VALUE
:
816 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
818 else if (INTEGERP (value
)
820 && XINT (value
) <= 100)
824 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
825 if (!INTEGERP (value
) || XINT (value
) < 0)
829 case IMAGE_DONT_CHECK_VALUE_TYPE
:
832 case IMAGE_FUNCTION_VALUE
:
833 value
= indirect_function (value
);
834 if (!NILP (Ffunctionp (value
)))
838 case IMAGE_NUMBER_VALUE
:
839 if (!INTEGERP (value
) && !FLOATP (value
))
843 case IMAGE_INTEGER_VALUE
:
844 if (!INTEGERP (value
))
848 case IMAGE_BOOL_VALUE
:
849 if (!NILP (value
) && !EQ (value
, Qt
))
858 if (EQ (key
, QCtype
) && !EQ (type
, value
))
862 /* Check that all mandatory fields are present. */
863 for (i
= 0; i
< nkeywords
; ++i
)
864 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
871 /* Return the value of KEY in image specification SPEC. Value is nil
872 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
873 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
876 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
880 xassert (valid_image_p (spec
));
882 for (tail
= XCDR (spec
);
883 CONSP (tail
) && CONSP (XCDR (tail
));
884 tail
= XCDR (XCDR (tail
)))
886 if (EQ (XCAR (tail
), key
))
890 return XCAR (XCDR (tail
));
900 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
901 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
902 PIXELS non-nil means return the size in pixels, otherwise return the
903 size in canonical character units.
904 FRAME is the frame on which the image will be displayed. FRAME nil
905 or omitted means use the selected frame. */)
906 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
911 if (valid_image_p (spec
))
913 struct frame
*f
= check_x_frame (frame
);
914 int id
= lookup_image (f
, spec
);
915 struct image
*img
= IMAGE_FROM_ID (f
, id
);
916 int width
= img
->width
+ 2 * img
->hmargin
;
917 int height
= img
->height
+ 2 * img
->vmargin
;
920 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
921 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
923 size
= Fcons (make_number (width
), make_number (height
));
926 error ("Invalid image specification");
932 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
933 doc
: /* Return t if image SPEC has a mask bitmap.
934 FRAME is the frame on which the image will be displayed. FRAME nil
935 or omitted means use the selected frame. */)
936 (Lisp_Object spec
, Lisp_Object frame
)
941 if (valid_image_p (spec
))
943 struct frame
*f
= check_x_frame (frame
);
944 int id
= lookup_image (f
, spec
);
945 struct image
*img
= IMAGE_FROM_ID (f
, id
);
950 error ("Invalid image specification");
955 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
956 doc
: /* Return metadata for image SPEC.
957 FRAME is the frame on which the image will be displayed. FRAME nil
958 or omitted means use the selected frame. */)
959 (Lisp_Object spec
, Lisp_Object frame
)
964 if (valid_image_p (spec
))
966 struct frame
*f
= check_x_frame (frame
);
967 int id
= lookup_image (f
, spec
);
968 struct image
*img
= IMAGE_FROM_ID (f
, id
);
969 ext
= img
->data
.lisp_val
;
976 /***********************************************************************
977 Image type independent image structures
978 ***********************************************************************/
980 static struct image
*make_image (Lisp_Object spec
, unsigned hash
);
981 static void free_image (struct frame
*f
, struct image
*img
);
982 static int check_image_size (struct frame
*f
, int width
, int height
);
984 #define MAX_IMAGE_SIZE 6.0
985 /* Allocate and return a new image structure for image specification
986 SPEC. SPEC has a hash value of HASH. */
988 static struct image
*
989 make_image (Lisp_Object spec
, unsigned int hash
)
991 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
992 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
994 xassert (valid_image_p (spec
));
995 memset (img
, 0, sizeof *img
);
996 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
997 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
998 xassert (img
->type
!= NULL
);
1000 img
->data
.lisp_val
= Qnil
;
1001 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1003 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1008 /* Free image IMG which was used on frame F, including its resources. */
1011 free_image (struct frame
*f
, struct image
*img
)
1015 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1017 /* Remove IMG from the hash table of its cache. */
1019 img
->prev
->next
= img
->next
;
1021 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1024 img
->next
->prev
= img
->prev
;
1026 c
->images
[img
->id
] = NULL
;
1028 /* Free resources, then free IMG. */
1029 img
->type
->free (f
, img
);
1034 /* Return 1 if the given widths and heights are valid for display;
1035 otherwise, return 0. */
1038 check_image_size (struct frame
*f
, int width
, int height
)
1042 if (width
<= 0 || height
<= 0)
1045 if (INTEGERP (Vmax_image_size
))
1046 w
= h
= XINT (Vmax_image_size
);
1047 else if (FLOATP (Vmax_image_size
))
1051 w
= FRAME_PIXEL_WIDTH (f
);
1052 h
= FRAME_PIXEL_HEIGHT (f
);
1055 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1056 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1057 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1062 return (width
<= w
&& height
<= h
);
1065 /* Prepare image IMG for display on frame F. Must be called before
1066 drawing an image. */
1069 prepare_image_for_display (struct frame
*f
, struct image
*img
)
1073 /* We're about to display IMG, so set its timestamp to `now'. */
1075 img
->timestamp
= EMACS_SECS (t
);
1077 /* If IMG doesn't have a pixmap yet, load it now, using the image
1078 type dependent loader function. */
1079 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1080 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1085 /* Value is the number of pixels for the ascent of image IMG when
1086 drawn in face FACE. */
1089 image_ascent (struct image
*img
, struct face
*face
, struct glyph_slice
*slice
)
1094 if (slice
->height
== img
->height
)
1095 height
= img
->height
+ img
->vmargin
;
1096 else if (slice
->y
== 0)
1097 height
= slice
->height
+ img
->vmargin
;
1099 height
= slice
->height
;
1101 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1106 /* W32 specific version. Why?. ++kfs */
1107 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1108 - FONT_BASE (face
->font
)) / 2;
1110 /* This expression is arranged so that if the image can't be
1111 exactly centered, it will be moved slightly up. This is
1112 because a typical font is `top-heavy' (due to the presence
1113 uppercase letters), so the image placement should err towards
1114 being top-heavy too. It also just generally looks better. */
1115 ascent
= (height
+ FONT_BASE(face
->font
)
1116 - FONT_DESCENT(face
->font
) + 1) / 2;
1117 #endif /* HAVE_NTGUI */
1120 ascent
= height
/ 2;
1123 ascent
= (int) (height
* img
->ascent
/ 100.0);
1129 /* Image background colors. */
1131 /* Find the "best" corner color of a bitmap.
1132 On W32, XIMG is assumed to a device context with the bitmap selected. */
1134 static RGB_PIXEL_COLOR
1135 four_corners_best (XImagePtr_or_DC ximg
, int *corners
,
1136 unsigned long width
, unsigned long height
)
1138 RGB_PIXEL_COLOR corner_pixels
[4], best
IF_LINT (= 0);
1141 if (corners
&& corners
[BOT_CORNER
] >= 0)
1143 /* Get the colors at the corner_pixels of ximg. */
1144 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1145 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1146 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1147 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1151 /* Get the colors at the corner_pixels of ximg. */
1152 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1153 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1154 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1155 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1157 /* Choose the most frequently found color as background. */
1158 for (i
= best_count
= 0; i
< 4; ++i
)
1162 for (j
= n
= 0; j
< 4; ++j
)
1163 if (corner_pixels
[i
] == corner_pixels
[j
])
1167 best
= corner_pixels
[i
], best_count
= n
;
1173 /* Portability macros */
1177 #define Destroy_Image(img_dc, prev) \
1178 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1180 #define Free_Pixmap(display, pixmap) \
1181 DeleteObject (pixmap)
1183 #elif defined (HAVE_NS)
1185 #define Destroy_Image(ximg, dummy) \
1186 ns_release_object (ximg)
1188 #define Free_Pixmap(display, pixmap) \
1189 ns_release_object (pixmap)
1193 #define Destroy_Image(ximg, dummy) \
1194 XDestroyImage (ximg)
1196 #define Free_Pixmap(display, pixmap) \
1197 XFreePixmap (display, pixmap)
1199 #endif /* !HAVE_NTGUI && !HAVE_NS */
1202 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1203 it is guessed heuristically. If non-zero, XIMG is an existing
1204 XImage object (or device context with the image selected on W32) to
1205 use for the heuristic. */
1208 image_background (struct image
*img
, struct frame
*f
, XImagePtr_or_DC ximg
)
1210 if (! img
->background_valid
)
1211 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1213 int free_ximg
= !ximg
;
1216 #endif /* HAVE_NTGUI */
1221 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1222 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1224 HDC frame_dc
= get_frame_dc (f
);
1225 ximg
= CreateCompatibleDC (frame_dc
);
1226 release_frame_dc (f
, frame_dc
);
1227 prev
= SelectObject (ximg
, img
->pixmap
);
1228 #endif /* !HAVE_NTGUI */
1231 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1234 Destroy_Image (ximg
, prev
);
1236 img
->background_valid
= 1;
1239 return img
->background
;
1242 /* Return the `background_transparent' field of IMG. If IMG doesn't
1243 have one yet, it is guessed heuristically. If non-zero, MASK is an
1244 existing XImage object to use for the heuristic. */
1247 image_background_transparent (struct image
*img
, struct frame
*f
, XImagePtr_or_DC mask
)
1249 if (! img
->background_transparent_valid
)
1250 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1254 int free_mask
= !mask
;
1257 #endif /* HAVE_NTGUI */
1262 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1263 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1265 HDC frame_dc
= get_frame_dc (f
);
1266 mask
= CreateCompatibleDC (frame_dc
);
1267 release_frame_dc (f
, frame_dc
);
1268 prev
= SelectObject (mask
, img
->mask
);
1269 #endif /* HAVE_NTGUI */
1272 img
->background_transparent
1273 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1276 Destroy_Image (mask
, prev
);
1279 img
->background_transparent
= 0;
1281 img
->background_transparent_valid
= 1;
1284 return img
->background_transparent
;
1288 /***********************************************************************
1289 Helper functions for X image types
1290 ***********************************************************************/
1292 static void x_clear_image_1 (struct frame
*, struct image
*, int,
1294 static void x_clear_image (struct frame
*f
, struct image
*img
);
1295 static unsigned long x_alloc_image_color (struct frame
*f
,
1297 Lisp_Object color_name
,
1298 unsigned long dflt
);
1301 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1302 free the pixmap if any. MASK_P non-zero means clear the mask
1303 pixmap if any. COLORS_P non-zero means free colors allocated for
1304 the image, if any. */
1307 x_clear_image_1 (struct frame
*f
, struct image
*img
, int pixmap_p
, int mask_p
,
1310 if (pixmap_p
&& img
->pixmap
)
1312 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1313 img
->pixmap
= NO_PIXMAP
;
1314 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1315 img
->background_valid
= 0;
1318 if (mask_p
&& img
->mask
)
1320 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1321 img
->mask
= NO_PIXMAP
;
1322 img
->background_transparent_valid
= 0;
1325 if (colors_p
&& img
->ncolors
)
1327 /* W32_TODO: color table support. */
1328 #ifdef HAVE_X_WINDOWS
1329 x_free_colors (f
, img
->colors
, img
->ncolors
);
1330 #endif /* HAVE_X_WINDOWS */
1331 xfree (img
->colors
);
1338 /* Free X resources of image IMG which is used on frame F. */
1341 x_clear_image (struct frame
*f
, struct image
*img
)
1344 x_clear_image_1 (f
, img
, 1, 1, 1);
1349 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1350 cannot be allocated, use DFLT. Add a newly allocated color to
1351 IMG->colors, so that it can be freed again. Value is the pixel
1354 static unsigned long
1355 x_alloc_image_color (struct frame
*f
, struct image
*img
, Lisp_Object color_name
,
1359 unsigned long result
;
1361 xassert (STRINGP (color_name
));
1363 if (x_defined_color (f
, SSDATA (color_name
), &color
, 1))
1365 /* This isn't called frequently so we get away with simply
1366 reallocating the color vector to the needed size, here. */
1369 (unsigned long *) xrealloc (img
->colors
,
1370 img
->ncolors
* sizeof *img
->colors
);
1371 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1372 result
= color
.pixel
;
1382 /***********************************************************************
1384 ***********************************************************************/
1386 static struct image
*search_image_cache (struct frame
*, Lisp_Object
, unsigned);
1387 static void cache_image (struct frame
*f
, struct image
*img
);
1388 static void postprocess_image (struct frame
*, struct image
*);
1390 /* Return a new, initialized image cache that is allocated from the
1391 heap. Call free_image_cache to free an image cache. */
1393 struct image_cache
*
1394 make_image_cache (void)
1396 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1399 memset (c
, 0, sizeof *c
);
1401 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1402 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1403 c
->buckets
= (struct image
**) xmalloc (size
);
1404 memset (c
->buckets
, 0, size
);
1409 /* Find an image matching SPEC in the cache, and return it. If no
1410 image is found, return NULL. */
1411 static struct image
*
1412 search_image_cache (struct frame
*f
, Lisp_Object spec
, unsigned int hash
)
1415 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1416 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1418 if (!c
) return NULL
;
1420 /* If the image spec does not specify a background color, the cached
1421 image must have the same background color as the current frame.
1422 The foreground color must also match, for the sake of monochrome
1425 In fact, we could ignore the foreground color matching condition
1426 for color images, or if the image spec specifies :foreground;
1427 similarly we could ignore the background color matching condition
1428 for formats that don't use transparency (such as jpeg), or if the
1429 image spec specifies :background. However, the extra memory
1430 usage is probably negligible in practice, so we don't bother. */
1432 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1433 if (img
->hash
== hash
1434 && !NILP (Fequal (img
->spec
, spec
))
1435 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1436 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1442 /* Search frame F for an image with spec SPEC, and free it. */
1445 uncache_image (struct frame
*f
, Lisp_Object spec
)
1447 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1450 free_image (f
, img
);
1451 /* As display glyphs may still be referring to the image ID, we
1452 must garbage the frame (Bug#6426). */
1453 SET_FRAME_GARBAGED (f
);
1458 /* Free image cache of frame F. Be aware that X frames share images
1462 free_image_cache (struct frame
*f
)
1464 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1469 /* Cache should not be referenced by any frame when freed. */
1470 xassert (c
->refcount
== 0);
1472 for (i
= 0; i
< c
->used
; ++i
)
1473 free_image (f
, c
->images
[i
]);
1477 FRAME_IMAGE_CACHE (f
) = NULL
;
1482 /* Clear image cache of frame F. FILTER=t means free all images.
1483 FILTER=nil means clear only images that haven't been
1484 displayed for some time.
1485 Else, only free the images which have FILTER in their `dependencies'.
1486 Should be called from time to time to reduce the number of loaded images.
1487 If image-cache-eviction-delay is non-nil, this frees images in the cache
1488 which weren't displayed for at least that many seconds. */
1491 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1493 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1499 /* Block input so that we won't be interrupted by a SIGIO
1500 while being in an inconsistent state. */
1505 /* Filter image cache. */
1506 for (i
= 0; i
< c
->used
; ++i
)
1508 struct image
*img
= c
->images
[i
];
1509 if (img
&& (EQ (Qt
, filter
)
1510 || !NILP (Fmember (filter
, img
->dependencies
))))
1512 free_image (f
, img
);
1517 else if (INTEGERP (Vimage_cache_eviction_delay
))
1519 /* Free cache based on timestamp. */
1522 int delay
, nimages
= 0;
1524 for (i
= 0; i
< c
->used
; ++i
)
1528 /* If the number of cached images has grown unusually large,
1529 decrease the cache eviction delay (Bug#6230). */
1530 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1532 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1535 old
= EMACS_SECS (t
) - delay
;
1537 for (i
= 0; i
< c
->used
; ++i
)
1539 struct image
*img
= c
->images
[i
];
1540 if (img
&& img
->timestamp
< old
)
1542 free_image (f
, img
);
1548 /* We may be clearing the image cache because, for example,
1549 Emacs was iconified for a longer period of time. In that
1550 case, current matrices may still contain references to
1551 images freed above. So, clear these matrices. */
1554 Lisp_Object tail
, frame
;
1556 FOR_EACH_FRAME (tail
, frame
)
1558 struct frame
*fr
= XFRAME (frame
);
1559 if (FRAME_IMAGE_CACHE (fr
) == c
)
1560 clear_current_matrices (fr
);
1563 ++windows_or_buffers_changed
;
1571 clear_image_caches (Lisp_Object filter
)
1573 /* FIXME: We want to do
1574 * struct terminal *t;
1575 * for (t = terminal_list; t; t = t->next_terminal)
1576 * clear_image_cache (t, filter); */
1577 Lisp_Object tail
, frame
;
1578 FOR_EACH_FRAME (tail
, frame
)
1579 if (FRAME_WINDOW_P (XFRAME (frame
)))
1580 clear_image_cache (XFRAME (frame
), filter
);
1583 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1585 doc
: /* Clear the image cache.
1586 FILTER nil or a frame means clear all images in the selected frame.
1587 FILTER t means clear the image caches of all frames.
1588 Anything else, means only clear those images which refer to FILTER,
1589 which is then usually a filename. */)
1590 (Lisp_Object filter
)
1592 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1593 clear_image_caches (filter
);
1595 clear_image_cache (check_x_frame (filter
), Qt
);
1601 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1603 doc
: /* Fush the image with specification SPEC on frame FRAME.
1604 This removes the image from the Emacs image cache. If SPEC specifies
1605 an image file, the next redisplay of this image will read from the
1606 current contents of that file.
1608 FRAME nil or omitted means use the selected frame.
1609 FRAME t means refresh the image on all frames. */)
1610 (Lisp_Object spec
, Lisp_Object frame
)
1612 if (!valid_image_p (spec
))
1613 error ("Invalid image specification");
1618 FOR_EACH_FRAME (tail
, frame
)
1620 struct frame
*f
= XFRAME (frame
);
1621 if (FRAME_WINDOW_P (f
))
1622 uncache_image (f
, spec
);
1626 uncache_image (check_x_frame (frame
), spec
);
1632 /* Compute masks and transform image IMG on frame F, as specified
1633 by the image's specification, */
1636 postprocess_image (struct frame
*f
, struct image
*img
)
1638 /* Manipulation of the image's mask. */
1641 Lisp_Object conversion
, spec
;
1646 /* `:heuristic-mask t'
1648 means build a mask heuristically.
1649 `:heuristic-mask (R G B)'
1650 `:mask (heuristic (R G B))'
1651 means build a mask from color (R G B) in the
1654 means remove a mask, if any. */
1656 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1658 x_build_heuristic_mask (f
, img
, mask
);
1663 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1665 if (EQ (mask
, Qheuristic
))
1666 x_build_heuristic_mask (f
, img
, Qt
);
1667 else if (CONSP (mask
)
1668 && EQ (XCAR (mask
), Qheuristic
))
1670 if (CONSP (XCDR (mask
)))
1671 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1673 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1675 else if (NILP (mask
) && found_p
&& img
->mask
)
1677 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1678 img
->mask
= NO_PIXMAP
;
1683 /* Should we apply an image transformation algorithm? */
1684 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1685 if (EQ (conversion
, Qdisabled
))
1686 x_disable_image (f
, img
);
1687 else if (EQ (conversion
, Qlaplace
))
1689 else if (EQ (conversion
, Qemboss
))
1691 else if (CONSP (conversion
)
1692 && EQ (XCAR (conversion
), Qedge_detection
))
1695 tem
= XCDR (conversion
);
1697 x_edge_detection (f
, img
,
1698 Fplist_get (tem
, QCmatrix
),
1699 Fplist_get (tem
, QCcolor_adjustment
));
1705 /* Return the id of image with Lisp specification SPEC on frame F.
1706 SPEC must be a valid Lisp image specification (see valid_image_p). */
1709 lookup_image (struct frame
*f
, Lisp_Object spec
)
1715 /* F must be a window-system frame, and SPEC must be a valid image
1717 xassert (FRAME_WINDOW_P (f
));
1718 xassert (valid_image_p (spec
));
1720 /* Look up SPEC in the hash table of the image cache. */
1721 hash
= sxhash (spec
, 0);
1722 img
= search_image_cache (f
, spec
, hash
);
1723 if (img
&& img
->load_failed_p
)
1725 free_image (f
, img
);
1729 /* If not found, create a new image and cache it. */
1733 img
= make_image (spec
, hash
);
1734 cache_image (f
, img
);
1735 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1736 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1737 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1739 /* If we can't load the image, and we don't have a width and
1740 height, use some arbitrary width and height so that we can
1741 draw a rectangle for it. */
1742 if (img
->load_failed_p
)
1746 value
= image_spec_value (spec
, QCwidth
, NULL
);
1747 img
->width
= (INTEGERP (value
)
1748 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1749 value
= image_spec_value (spec
, QCheight
, NULL
);
1750 img
->height
= (INTEGERP (value
)
1751 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1755 /* Handle image type independent image attributes
1756 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1757 `:background COLOR'. */
1758 Lisp_Object ascent
, margin
, relief
, bg
;
1760 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1761 if (INTEGERP (ascent
))
1762 img
->ascent
= XFASTINT (ascent
);
1763 else if (EQ (ascent
, Qcenter
))
1764 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1766 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1767 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1768 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1769 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1770 && INTEGERP (XCDR (margin
)))
1772 if (XINT (XCAR (margin
)) > 0)
1773 img
->hmargin
= XFASTINT (XCAR (margin
));
1774 if (XINT (XCDR (margin
)) > 0)
1775 img
->vmargin
= XFASTINT (XCDR (margin
));
1778 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1779 if (INTEGERP (relief
))
1781 img
->relief
= XINT (relief
);
1782 img
->hmargin
+= eabs (img
->relief
);
1783 img
->vmargin
+= eabs (img
->relief
);
1786 if (! img
->background_valid
)
1788 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1792 = x_alloc_image_color (f
, img
, bg
,
1793 FRAME_BACKGROUND_PIXEL (f
));
1794 img
->background_valid
= 1;
1798 /* Do image transformations and compute masks, unless we
1799 don't have the image yet. */
1800 if (!EQ (*img
->type
->type
, Qpostscript
))
1801 postprocess_image (f
, img
);
1807 /* We're using IMG, so set its timestamp to `now'. */
1808 EMACS_GET_TIME (now
);
1809 img
->timestamp
= EMACS_SECS (now
);
1811 /* Value is the image id. */
1816 /* Cache image IMG in the image cache of frame F. */
1819 cache_image (struct frame
*f
, struct image
*img
)
1821 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1824 /* Find a free slot in c->images. */
1825 for (i
= 0; i
< c
->used
; ++i
)
1826 if (c
->images
[i
] == NULL
)
1829 /* If no free slot found, maybe enlarge c->images. */
1830 if (i
== c
->used
&& c
->used
== c
->size
)
1833 c
->images
= (struct image
**) xrealloc (c
->images
,
1834 c
->size
* sizeof *c
->images
);
1837 /* Add IMG to c->images, and assign IMG an id. */
1843 /* Add IMG to the cache's hash table. */
1844 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1845 img
->next
= c
->buckets
[i
];
1847 img
->next
->prev
= img
;
1849 c
->buckets
[i
] = img
;
1853 /* Call FN on every image in the image cache of frame F. Used to mark
1854 Lisp Objects in the image cache. */
1856 /* Mark Lisp objects in image IMG. */
1859 mark_image (struct image
*img
)
1861 mark_object (img
->spec
);
1862 mark_object (img
->dependencies
);
1864 if (!NILP (img
->data
.lisp_val
))
1865 mark_object (img
->data
.lisp_val
);
1870 mark_image_cache (struct image_cache
*c
)
1875 for (i
= 0; i
< c
->used
; ++i
)
1877 mark_image (c
->images
[i
]);
1883 /***********************************************************************
1884 X / NS / W32 support code
1885 ***********************************************************************/
1889 /* Macro for defining functions that will be loaded from image DLLs. */
1890 #define DEF_IMGLIB_FN(rettype,func,args) rettype (FAR CDECL *fn_##func)args
1892 /* Macro for loading those image functions from the library. */
1893 #define LOAD_IMGLIB_FN(lib,func) { \
1894 fn_##func = (void *) GetProcAddress (lib, #func); \
1895 if (!fn_##func) return 0; \
1898 /* Load a DLL implementing an image type.
1899 The argument LIBRARIES is usually the variable
1900 `dynamic-library-alist', which associates a symbol, identifying
1901 an external DLL library, to a list of possible filenames.
1902 The function returns NULL if no library could be loaded for
1903 the given symbol, or if the library was previously loaded;
1904 else the handle of the DLL. */
1906 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
1908 HMODULE library
= NULL
;
1910 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
1912 Lisp_Object dlls
= Fassq (type
, libraries
);
1915 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
1917 CHECK_STRING_CAR (dlls
);
1918 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
1926 #endif /* HAVE_NTGUI */
1928 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1929 XImagePtr
*, Pixmap
*);
1930 static void x_destroy_x_image (XImagePtr
);
1931 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1934 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1935 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1936 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1937 via xmalloc. Print error messages via image_error if an error
1938 occurs. Value is non-zero if successful.
1940 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1941 should indicate the bit depth of the image. */
1944 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1945 XImagePtr
*ximg
, Pixmap
*pixmap
)
1947 #ifdef HAVE_X_WINDOWS
1948 Display
*display
= FRAME_X_DISPLAY (f
);
1949 Window window
= FRAME_X_WINDOW (f
);
1950 Screen
*screen
= FRAME_X_SCREEN (f
);
1952 xassert (interrupt_input_blocked
);
1955 depth
= DefaultDepthOfScreen (screen
);
1956 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1957 depth
, ZPixmap
, 0, NULL
, width
, height
,
1958 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1961 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1965 /* Allocate image raster. */
1966 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1968 /* Allocate a pixmap of the same size. */
1969 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1970 if (*pixmap
== NO_PIXMAP
)
1972 x_destroy_x_image (*ximg
);
1974 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1979 #endif /* HAVE_X_WINDOWS */
1983 BITMAPINFOHEADER
*header
;
1985 int scanline_width_bits
;
1987 int palette_colors
= 0;
1992 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1993 && depth
!= 16 && depth
!= 24 && depth
!= 32)
1995 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
1999 scanline_width_bits
= width
* depth
;
2000 remainder
= scanline_width_bits
% 32;
2003 scanline_width_bits
+= 32 - remainder
;
2005 /* Bitmaps with a depth less than 16 need a palette. */
2006 /* BITMAPINFO structure already contains the first RGBQUAD. */
2008 palette_colors
= 1 << depth
- 1;
2010 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2013 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2017 header
= &(*ximg
)->info
.bmiHeader
;
2018 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
2019 header
->biSize
= sizeof (*header
);
2020 header
->biWidth
= width
;
2021 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2022 header
->biPlanes
= 1;
2023 header
->biBitCount
= depth
;
2024 header
->biCompression
= BI_RGB
;
2025 header
->biClrUsed
= palette_colors
;
2027 /* TODO: fill in palette. */
2030 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2031 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2032 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2033 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2034 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2035 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2036 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2037 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2040 hdc
= get_frame_dc (f
);
2042 /* Create a DIBSection and raster array for the bitmap,
2043 and store its handle in *pixmap. */
2044 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2045 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2046 /* casting avoids a GCC warning */
2047 (void **)&((*ximg
)->data
), NULL
, 0);
2049 /* Realize display palette and garbage all frames. */
2050 release_frame_dc (f
, hdc
);
2052 if (*pixmap
== NULL
)
2054 DWORD err
= GetLastError ();
2055 Lisp_Object errcode
;
2056 /* All system errors are < 10000, so the following is safe. */
2057 XSETINT (errcode
, (int) err
);
2058 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2059 x_destroy_x_image (*ximg
);
2065 #endif /* HAVE_NTGUI */
2068 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2072 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2081 /* Destroy XImage XIMG. Free XIMG->data. */
2084 x_destroy_x_image (XImagePtr ximg
)
2086 xassert (interrupt_input_blocked
);
2089 #ifdef HAVE_X_WINDOWS
2092 XDestroyImage (ximg
);
2093 #endif /* HAVE_X_WINDOWS */
2095 /* Data will be freed by DestroyObject. */
2098 #endif /* HAVE_NTGUI */
2100 ns_release_object (ximg
);
2101 #endif /* HAVE_NS */
2106 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2107 are width and height of both the image and pixmap. */
2110 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2112 #ifdef HAVE_X_WINDOWS
2115 xassert (interrupt_input_blocked
);
2116 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2117 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2118 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2119 #endif /* HAVE_X_WINDOWS */
2122 #if 0 /* I don't think this is necessary looking at where it is used. */
2123 HDC hdc
= get_frame_dc (f
);
2124 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2125 release_frame_dc (f
, hdc
);
2127 #endif /* HAVE_NTGUI */
2130 xassert (ximg
== pixmap
);
2131 ns_retain_object (ximg
);
2136 /***********************************************************************
2138 ***********************************************************************/
2140 static unsigned char *slurp_file (char *, int *);
2143 /* Find image file FILE. Look in data-directory/images, then
2144 x-bitmap-file-path. Value is the encoded full name of the file
2145 found, or nil if not found. */
2148 x_find_image_file (Lisp_Object file
)
2150 Lisp_Object file_found
, search_path
;
2153 /* TODO I think this should use something like image-load-path
2154 instead. Unfortunately, that can contain non-string elements. */
2155 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2157 Vx_bitmap_file_path
);
2159 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2160 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2166 file_found
= ENCODE_FILE (file_found
);
2174 /* Read FILE into memory. Value is a pointer to a buffer allocated
2175 with xmalloc holding FILE's contents. Value is null if an error
2176 occurred. *SIZE is set to the size of the file. */
2178 static unsigned char *
2179 slurp_file (char *file
, int *size
)
2182 unsigned char *buf
= NULL
;
2185 if (stat (file
, &st
) == 0
2186 && (fp
= fopen (file
, "rb")) != NULL
2187 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2188 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2209 /***********************************************************************
2211 ***********************************************************************/
2213 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2214 static int xbm_load (struct frame
*f
, struct image
*img
);
2215 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2216 unsigned char *, unsigned char *);
2217 static int xbm_image_p (Lisp_Object object
);
2218 static int xbm_read_bitmap_data (struct frame
*f
,
2219 unsigned char *, unsigned char *,
2220 int *, int *, char **, int);
2221 static int xbm_file_p (Lisp_Object
);
2224 /* Indices of image specification fields in xbm_format, below. */
2226 enum xbm_keyword_index
2244 /* Vector of image_keyword structures describing the format
2245 of valid XBM image specifications. */
2247 static const struct image_keyword xbm_format
[XBM_LAST
] =
2249 {":type", IMAGE_SYMBOL_VALUE
, 1},
2250 {":file", IMAGE_STRING_VALUE
, 0},
2251 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2252 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2253 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2254 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2255 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2256 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2257 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2258 {":relief", IMAGE_INTEGER_VALUE
, 0},
2259 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2260 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2261 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2264 /* Structure describing the image type XBM. */
2266 static struct image_type xbm_type
=
2275 /* Tokens returned from xbm_scan. */
2284 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2285 A valid specification is a list starting with the symbol `image'
2286 The rest of the list is a property list which must contain an
2289 If the specification specifies a file to load, it must contain
2290 an entry `:file FILENAME' where FILENAME is a string.
2292 If the specification is for a bitmap loaded from memory it must
2293 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2294 WIDTH and HEIGHT are integers > 0. DATA may be:
2296 1. a string large enough to hold the bitmap data, i.e. it must
2297 have a size >= (WIDTH + 7) / 8 * HEIGHT
2299 2. a bool-vector of size >= WIDTH * HEIGHT
2301 3. a vector of strings or bool-vectors, one for each line of the
2304 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2305 may not be specified in this case because they are defined in the
2308 Both the file and data forms may contain the additional entries
2309 `:background COLOR' and `:foreground COLOR'. If not present,
2310 foreground and background of the frame on which the image is
2311 displayed is used. */
2314 xbm_image_p (Lisp_Object object
)
2316 struct image_keyword kw
[XBM_LAST
];
2318 memcpy (kw
, xbm_format
, sizeof kw
);
2319 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2322 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2324 if (kw
[XBM_FILE
].count
)
2326 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2329 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2331 /* In-memory XBM file. */
2332 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2340 /* Entries for `:width', `:height' and `:data' must be present. */
2341 if (!kw
[XBM_WIDTH
].count
2342 || !kw
[XBM_HEIGHT
].count
2343 || !kw
[XBM_DATA
].count
)
2346 data
= kw
[XBM_DATA
].value
;
2347 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2348 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2350 /* Check type of data, and width and height against contents of
2356 /* Number of elements of the vector must be >= height. */
2357 if (XVECTOR (data
)->size
< height
)
2360 /* Each string or bool-vector in data must be large enough
2361 for one line of the image. */
2362 for (i
= 0; i
< height
; ++i
)
2364 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2369 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2372 else if (BOOL_VECTOR_P (elt
))
2374 if (XBOOL_VECTOR (elt
)->size
< width
)
2381 else if (STRINGP (data
))
2384 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2387 else if (BOOL_VECTOR_P (data
))
2389 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2400 /* Scan a bitmap file. FP is the stream to read from. Value is
2401 either an enumerator from enum xbm_token, or a character for a
2402 single-character token, or 0 at end of file. If scanning an
2403 identifier, store the lexeme of the identifier in SVAL. If
2404 scanning a number, store its value in *IVAL. */
2407 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2413 /* Skip white space. */
2414 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2419 else if (isdigit (c
))
2421 int value
= 0, digit
;
2423 if (c
== '0' && *s
< end
)
2426 if (c
== 'x' || c
== 'X')
2433 else if (c
>= 'a' && c
<= 'f')
2434 digit
= c
- 'a' + 10;
2435 else if (c
>= 'A' && c
<= 'F')
2436 digit
= c
- 'A' + 10;
2439 value
= 16 * value
+ digit
;
2442 else if (isdigit (c
))
2446 && (c
= *(*s
)++, isdigit (c
)))
2447 value
= 8 * value
+ c
- '0';
2454 && (c
= *(*s
)++, isdigit (c
)))
2455 value
= 10 * value
+ c
- '0';
2463 else if (isalpha (c
) || c
== '_')
2467 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2474 else if (c
== '/' && **s
== '*')
2476 /* C-style comment. */
2478 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2492 /* Create a Windows bitmap from X bitmap data. */
2494 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2496 static unsigned char swap_nibble
[16]
2497 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2498 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2499 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2500 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2502 unsigned char *bits
, *p
;
2505 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2506 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2507 bits
= (unsigned char *) alloca (height
* w2
);
2508 memset (bits
, 0, height
* w2
);
2509 for (i
= 0; i
< height
; i
++)
2512 for (j
= 0; j
< w1
; j
++)
2514 /* Bitswap XBM bytes to match how Windows does things. */
2515 unsigned char c
= *data
++;
2516 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2517 | (swap_nibble
[(c
>>4) & 0xf]));
2520 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2526 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2527 COLORREF foreground
, COLORREF background
)
2529 HDC hdc
, old_img_dc
, new_img_dc
;
2530 HGDIOBJ old_prev
, new_prev
;
2533 hdc
= get_frame_dc (f
);
2534 old_img_dc
= CreateCompatibleDC (hdc
);
2535 new_img_dc
= CreateCompatibleDC (hdc
);
2536 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2537 release_frame_dc (f
, hdc
);
2538 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2539 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2540 /* Windows convention for mono bitmaps is black = background,
2541 white = foreground. */
2542 SetTextColor (new_img_dc
, background
);
2543 SetBkColor (new_img_dc
, foreground
);
2545 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2548 SelectObject (old_img_dc
, old_prev
);
2549 SelectObject (new_img_dc
, new_prev
);
2550 DeleteDC (old_img_dc
);
2551 DeleteDC (new_img_dc
);
2552 DeleteObject (img
->pixmap
);
2553 if (new_pixmap
== 0)
2554 fprintf (stderr
, "Failed to convert image to color.\n");
2556 img
->pixmap
= new_pixmap
;
2559 #define XBM_BIT_SHUFFLE(b) (~(b))
2563 #define XBM_BIT_SHUFFLE(b) (b)
2565 #endif /* HAVE_NTGUI */
2569 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2570 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2571 int non_default_colors
)
2575 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2577 /* If colors were specified, transfer the bitmap to a color one. */
2578 if (non_default_colors
)
2579 convert_mono_to_color_image (f
, img
, fg
, bg
);
2581 #elif defined (HAVE_NS)
2582 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2586 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2589 img
->width
, img
->height
,
2591 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2592 #endif /* !HAVE_NTGUI && !HAVE_NS */
2597 /* Replacement for XReadBitmapFileData which isn't available under old
2598 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2599 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2600 the image. Return in *DATA the bitmap data allocated with xmalloc.
2601 Value is non-zero if successful. DATA null means just test if
2602 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2603 is non-zero, inhibit the call to image_error when the image size is
2604 invalid (the bitmap remains unread). */
2607 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2608 int *width
, int *height
, char **data
,
2609 int inhibit_image_error
)
2611 unsigned char *s
= contents
;
2612 char buffer
[BUFSIZ
];
2615 int bytes_per_line
, i
, nbytes
;
2621 LA1 = xbm_scan (&s, end, buffer, &value)
2623 #define expect(TOKEN) \
2624 if (LA1 != (TOKEN)) \
2629 #define expect_ident(IDENT) \
2630 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2635 *width
= *height
= -1;
2638 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2640 /* Parse defines for width, height and hot-spots. */
2644 expect_ident ("define");
2645 expect (XBM_TK_IDENT
);
2647 if (LA1
== XBM_TK_NUMBER
)
2649 char *q
= strrchr (buffer
, '_');
2650 q
= q
? q
+ 1 : buffer
;
2651 if (strcmp (q
, "width") == 0)
2653 else if (strcmp (q
, "height") == 0)
2656 expect (XBM_TK_NUMBER
);
2659 if (!check_image_size (f
, *width
, *height
))
2661 if (!inhibit_image_error
)
2662 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2665 else if (data
== NULL
)
2668 /* Parse bits. Must start with `static'. */
2669 expect_ident ("static");
2670 if (LA1
== XBM_TK_IDENT
)
2672 if (strcmp (buffer
, "unsigned") == 0)
2675 expect_ident ("char");
2677 else if (strcmp (buffer
, "short") == 0)
2681 if (*width
% 16 && *width
% 16 < 9)
2684 else if (strcmp (buffer
, "char") == 0)
2692 expect (XBM_TK_IDENT
);
2698 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2699 nbytes
= bytes_per_line
* *height
;
2700 p
= *data
= (char *) xmalloc (nbytes
);
2704 for (i
= 0; i
< nbytes
; i
+= 2)
2707 expect (XBM_TK_NUMBER
);
2709 *p
++ = XBM_BIT_SHUFFLE (val
);
2710 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2711 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2713 if (LA1
== ',' || LA1
== '}')
2721 for (i
= 0; i
< nbytes
; ++i
)
2724 expect (XBM_TK_NUMBER
);
2726 *p
++ = XBM_BIT_SHUFFLE (val
);
2728 if (LA1
== ',' || LA1
== '}')
2753 /* Load XBM image IMG which will be displayed on frame F from buffer
2754 CONTENTS. END is the end of the buffer. Value is non-zero if
2758 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2765 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2769 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2770 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2771 int non_default_colors
= 0;
2774 xassert (img
->width
> 0 && img
->height
> 0);
2776 /* Get foreground and background colors, maybe allocate colors. */
2777 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2780 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2781 non_default_colors
= 1;
2783 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2786 background
= x_alloc_image_color (f
, img
, value
, background
);
2787 img
->background
= background
;
2788 img
->background_valid
= 1;
2789 non_default_colors
= 1;
2792 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2793 foreground
, background
,
2794 non_default_colors
);
2797 if (img
->pixmap
== NO_PIXMAP
)
2799 x_clear_image (f
, img
);
2800 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2806 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2812 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2815 xbm_file_p (Lisp_Object data
)
2818 return (STRINGP (data
)
2819 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2820 (SDATA (data
) + SBYTES (data
)),
2825 /* Fill image IMG which is used on frame F with pixmap data. Value is
2826 non-zero if successful. */
2829 xbm_load (struct frame
*f
, struct image
*img
)
2832 Lisp_Object file_name
;
2834 xassert (xbm_image_p (img
->spec
));
2836 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2837 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2838 if (STRINGP (file_name
))
2841 unsigned char *contents
;
2844 file
= x_find_image_file (file_name
);
2845 if (!STRINGP (file
))
2847 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2851 contents
= slurp_file (SSDATA (file
), &size
);
2852 if (contents
== NULL
)
2854 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2858 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2862 struct image_keyword fmt
[XBM_LAST
];
2864 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2865 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2866 int non_default_colors
= 0;
2869 int in_memory_file_p
= 0;
2871 /* See if data looks like an in-memory XBM file. */
2872 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2873 in_memory_file_p
= xbm_file_p (data
);
2875 /* Parse the image specification. */
2876 memcpy (fmt
, xbm_format
, sizeof fmt
);
2877 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2881 /* Get specified width, and height. */
2882 if (!in_memory_file_p
)
2884 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2885 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2886 xassert (img
->width
> 0 && img
->height
> 0);
2889 /* Get foreground and background colors, maybe allocate colors. */
2890 if (fmt
[XBM_FOREGROUND
].count
2891 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2893 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2895 non_default_colors
= 1;
2898 if (fmt
[XBM_BACKGROUND
].count
2899 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2901 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2903 non_default_colors
= 1;
2906 if (in_memory_file_p
)
2907 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2916 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2918 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2919 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2921 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2923 memcpy (p
, SDATA (line
), nbytes
);
2925 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2928 else if (STRINGP (data
))
2929 bits
= SSDATA (data
);
2931 bits
= (char *) XBOOL_VECTOR (data
)->data
;
2937 /* Windows mono bitmaps are reversed compared with X. */
2938 invertedBits
= bits
;
2939 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2941 bits
= (char *) alloca (nbytes
);
2942 for (i
= 0; i
< nbytes
; i
++)
2943 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2946 /* Create the pixmap. */
2948 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2949 foreground
, background
,
2950 non_default_colors
);
2955 image_error ("Unable to create pixmap for XBM image `%s'",
2957 x_clear_image (f
, img
);
2967 /***********************************************************************
2969 ***********************************************************************/
2971 #if defined (HAVE_XPM) || defined (HAVE_NS)
2973 static int xpm_image_p (Lisp_Object object
);
2974 static int xpm_load (struct frame
*f
, struct image
*img
);
2975 static int xpm_valid_color_symbols_p (Lisp_Object
);
2977 #endif /* HAVE_XPM || HAVE_NS */
2981 /* Indicate to xpm.h that we don't have Xlib. */
2983 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
2984 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
2985 #define XColor xpm_XColor
2986 #define XImage xpm_XImage
2987 #define Display xpm_Display
2988 #define PIXEL_ALREADY_TYPEDEFED
2989 #include "X11/xpm.h"
2994 #undef PIXEL_ALREADY_TYPEDEFED
2996 #include "X11/xpm.h"
2997 #endif /* HAVE_NTGUI */
2998 #endif /* HAVE_XPM */
3000 #if defined (HAVE_XPM) || defined (HAVE_NS)
3001 /* The symbol `xpm' identifying XPM-format images. */
3005 /* Indices of image specification fields in xpm_format, below. */
3007 enum xpm_keyword_index
3023 /* Vector of image_keyword structures describing the format
3024 of valid XPM image specifications. */
3026 static const struct image_keyword xpm_format
[XPM_LAST
] =
3028 {":type", IMAGE_SYMBOL_VALUE
, 1},
3029 {":file", IMAGE_STRING_VALUE
, 0},
3030 {":data", IMAGE_STRING_VALUE
, 0},
3031 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3032 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3033 {":relief", IMAGE_INTEGER_VALUE
, 0},
3034 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3035 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3036 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3037 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3038 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3041 /* Structure describing the image type XPM. */
3043 static struct image_type xpm_type
=
3052 #ifdef HAVE_X_WINDOWS
3054 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3055 functions for allocating image colors. Our own functions handle
3056 color allocation failures more gracefully than the ones on the XPM
3059 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3060 #define ALLOC_XPM_COLORS
3062 #endif /* HAVE_X_WINDOWS */
3064 #ifdef ALLOC_XPM_COLORS
3066 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3067 static void xpm_free_color_cache (void);
3068 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3069 static int xpm_color_bucket (char *);
3070 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3073 /* An entry in a hash table used to cache color definitions of named
3074 colors. This cache is necessary to speed up XPM image loading in
3075 case we do color allocations ourselves. Without it, we would need
3076 a call to XParseColor per pixel in the image. */
3078 struct xpm_cached_color
3080 /* Next in collision chain. */
3081 struct xpm_cached_color
*next
;
3083 /* Color definition (RGB and pixel color). */
3090 /* The hash table used for the color cache, and its bucket vector
3093 #define XPM_COLOR_CACHE_BUCKETS 1001
3094 struct xpm_cached_color
**xpm_color_cache
;
3096 /* Initialize the color cache. */
3099 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3101 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3102 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3103 memset (xpm_color_cache
, 0, nbytes
);
3104 init_color_table ();
3106 if (attrs
->valuemask
& XpmColorSymbols
)
3111 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3112 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3113 attrs
->colorsymbols
[i
].value
, &color
))
3115 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3117 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3122 /* Free the color cache. */
3125 xpm_free_color_cache (void)
3127 struct xpm_cached_color
*p
, *next
;
3130 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3131 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3137 xfree (xpm_color_cache
);
3138 xpm_color_cache
= NULL
;
3139 free_color_table ();
3142 /* Return the bucket index for color named COLOR_NAME in the color
3146 xpm_color_bucket (char *color_name
)
3151 for (s
= color_name
; *s
; ++s
)
3153 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3157 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3158 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3161 static struct xpm_cached_color
*
3162 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3165 struct xpm_cached_color
*p
;
3168 bucket
= xpm_color_bucket (color_name
);
3170 nbytes
= sizeof *p
+ strlen (color_name
);
3171 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3172 strcpy (p
->name
, color_name
);
3174 p
->next
= xpm_color_cache
[bucket
];
3175 xpm_color_cache
[bucket
] = p
;
3179 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3180 return the cached definition in *COLOR. Otherwise, make a new
3181 entry in the cache and allocate the color. Value is zero if color
3182 allocation failed. */
3185 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3187 struct xpm_cached_color
*p
;
3188 int h
= xpm_color_bucket (color_name
);
3190 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3191 if (strcmp (p
->name
, color_name
) == 0)
3196 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3199 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3201 p
= xpm_cache_color (f
, color_name
, color
, h
);
3203 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3204 with transparency, and it's useful. */
3205 else if (strcmp ("opaque", color_name
) == 0)
3207 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3208 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3209 p
= xpm_cache_color (f
, color_name
, color
, h
);
3216 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3217 CLOSURE is a pointer to the frame on which we allocate the
3218 color. Return in *COLOR the allocated color. Value is non-zero
3222 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3225 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3229 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3230 is a pointer to the frame on which we allocate the color. Value is
3231 non-zero if successful. */
3234 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3239 #endif /* ALLOC_XPM_COLORS */
3244 /* XPM library details. */
3246 DEF_IMGLIB_FN (void, XpmFreeAttributes
, (XpmAttributes
*));
3247 DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer
, (Display
*, char *, xpm_XImage
**,
3248 xpm_XImage
**, XpmAttributes
*));
3249 DEF_IMGLIB_FN (int, XpmReadFileToImage
, (Display
*, char *, xpm_XImage
**,
3250 xpm_XImage
**, XpmAttributes
*));
3251 DEF_IMGLIB_FN (void, XImageFree
, (xpm_XImage
*));
3254 init_xpm_functions (Lisp_Object libraries
)
3258 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3261 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3262 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3263 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3264 LOAD_IMGLIB_FN (library
, XImageFree
);
3268 #endif /* HAVE_NTGUI */
3271 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3272 for XPM images. Such a list must consist of conses whose car and
3276 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3278 while (CONSP (color_symbols
))
3280 Lisp_Object sym
= XCAR (color_symbols
);
3282 || !STRINGP (XCAR (sym
))
3283 || !STRINGP (XCDR (sym
)))
3285 color_symbols
= XCDR (color_symbols
);
3288 return NILP (color_symbols
);
3292 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3295 xpm_image_p (Lisp_Object object
)
3297 struct image_keyword fmt
[XPM_LAST
];
3298 memcpy (fmt
, xpm_format
, sizeof fmt
);
3299 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3300 /* Either `:file' or `:data' must be present. */
3301 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3302 /* Either no `:color-symbols' or it's a list of conses
3303 whose car and cdr are strings. */
3304 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3305 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3308 #endif /* HAVE_XPM || HAVE_NS */
3310 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3312 x_create_bitmap_from_xpm_data (struct frame
*f
, const char **bits
)
3314 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3316 XpmAttributes attrs
;
3317 Pixmap bitmap
, mask
;
3319 memset (&attrs
, 0, sizeof attrs
);
3321 attrs
.visual
= FRAME_X_VISUAL (f
);
3322 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3323 attrs
.valuemask
|= XpmVisual
;
3324 attrs
.valuemask
|= XpmColormap
;
3326 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3327 (char **) bits
, &bitmap
, &mask
, &attrs
);
3328 if (rc
!= XpmSuccess
)
3330 XpmFreeAttributes (&attrs
);
3334 id
= x_allocate_bitmap_record (f
);
3335 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3336 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3337 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3338 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3339 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3340 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3341 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3342 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3344 XpmFreeAttributes (&attrs
);
3347 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3349 /* Load image IMG which will be displayed on frame F. Value is
3350 non-zero if successful. */
3355 xpm_load (struct frame
*f
, struct image
*img
)
3358 XpmAttributes attrs
;
3359 Lisp_Object specified_file
, color_symbols
;
3362 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3363 #endif /* HAVE_NTGUI */
3365 /* Configure the XPM lib. Use the visual of frame F. Allocate
3366 close colors. Return colors allocated. */
3367 memset (&attrs
, 0, sizeof attrs
);
3370 attrs
.visual
= FRAME_X_VISUAL (f
);
3371 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3372 attrs
.valuemask
|= XpmVisual
;
3373 attrs
.valuemask
|= XpmColormap
;
3374 #endif /* HAVE_NTGUI */
3376 #ifdef ALLOC_XPM_COLORS
3377 /* Allocate colors with our own functions which handle
3378 failing color allocation more gracefully. */
3379 attrs
.color_closure
= f
;
3380 attrs
.alloc_color
= xpm_alloc_color
;
3381 attrs
.free_colors
= xpm_free_colors
;
3382 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3383 #else /* not ALLOC_XPM_COLORS */
3384 /* Let the XPM lib allocate colors. */
3385 attrs
.valuemask
|= XpmReturnAllocPixels
;
3386 #ifdef XpmAllocCloseColors
3387 attrs
.alloc_close_colors
= 1;
3388 attrs
.valuemask
|= XpmAllocCloseColors
;
3389 #else /* not XpmAllocCloseColors */
3390 attrs
.closeness
= 600;
3391 attrs
.valuemask
|= XpmCloseness
;
3392 #endif /* not XpmAllocCloseColors */
3393 #endif /* ALLOC_XPM_COLORS */
3395 /* If image specification contains symbolic color definitions, add
3396 these to `attrs'. */
3397 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3398 if (CONSP (color_symbols
))
3401 XpmColorSymbol
*xpm_syms
;
3404 attrs
.valuemask
|= XpmColorSymbols
;
3406 /* Count number of symbols. */
3407 attrs
.numsymbols
= 0;
3408 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3411 /* Allocate an XpmColorSymbol array. */
3412 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3413 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3414 memset (xpm_syms
, 0, size
);
3415 attrs
.colorsymbols
= xpm_syms
;
3417 /* Fill the color symbol array. */
3418 for (tail
= color_symbols
, i
= 0;
3420 ++i
, tail
= XCDR (tail
))
3424 char *empty_string
= (char *) "";
3426 if (!CONSP (XCAR (tail
)))
3428 xpm_syms
[i
].name
= empty_string
;
3429 xpm_syms
[i
].value
= empty_string
;
3432 name
= XCAR (XCAR (tail
));
3433 color
= XCDR (XCAR (tail
));
3436 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3437 strcpy (xpm_syms
[i
].name
, SSDATA (name
));
3440 xpm_syms
[i
].name
= empty_string
;
3441 if (STRINGP (color
))
3443 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3444 strcpy (xpm_syms
[i
].value
, SSDATA (color
));
3447 xpm_syms
[i
].value
= empty_string
;
3451 /* Create a pixmap for the image, either from a file, or from a
3452 string buffer containing data in the same format as an XPM file. */
3453 #ifdef ALLOC_XPM_COLORS
3454 xpm_init_color_cache (f
, &attrs
);
3457 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3461 HDC frame_dc
= get_frame_dc (f
);
3462 hdc
= CreateCompatibleDC (frame_dc
);
3463 release_frame_dc (f
, frame_dc
);
3465 #endif /* HAVE_NTGUI */
3467 if (STRINGP (specified_file
))
3469 Lisp_Object file
= x_find_image_file (specified_file
);
3470 if (!STRINGP (file
))
3472 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3473 #ifdef ALLOC_XPM_COLORS
3474 xpm_free_color_cache ();
3480 /* XpmReadFileToPixmap is not available in the Windows port of
3481 libxpm. But XpmReadFileToImage almost does what we want. */
3482 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3483 &xpm_image
, &xpm_mask
,
3486 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3487 SSDATA (file
), &img
->pixmap
, &img
->mask
,
3489 #endif /* HAVE_NTGUI */
3493 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3494 if (!STRINGP (buffer
))
3496 image_error ("Invalid image data `%s'", buffer
, Qnil
);
3497 #ifdef ALLOC_XPM_COLORS
3498 xpm_free_color_cache ();
3503 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3504 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3505 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3506 &xpm_image
, &xpm_mask
,
3509 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3511 &img
->pixmap
, &img
->mask
,
3513 #endif /* HAVE_NTGUI */
3516 if (rc
== XpmSuccess
)
3518 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3519 img
->colors
= colors_in_color_table (&img
->ncolors
);
3520 #else /* not ALLOC_XPM_COLORS */
3524 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3525 plus some duplicate attributes. */
3526 if (xpm_image
&& xpm_image
->bitmap
)
3528 img
->pixmap
= xpm_image
->bitmap
;
3529 /* XImageFree in libXpm frees XImage struct without destroying
3530 the bitmap, which is what we want. */
3531 fn_XImageFree (xpm_image
);
3533 if (xpm_mask
&& xpm_mask
->bitmap
)
3535 /* The mask appears to be inverted compared with what we expect.
3536 TODO: invert our expectations. See other places where we
3537 have to invert bits because our idea of masks is backwards. */
3539 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3541 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3542 SelectObject (hdc
, old_obj
);
3544 img
->mask
= xpm_mask
->bitmap
;
3545 fn_XImageFree (xpm_mask
);
3550 #endif /* HAVE_NTGUI */
3552 /* Remember allocated colors. */
3553 img
->ncolors
= attrs
.nalloc_pixels
;
3554 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3555 * sizeof *img
->colors
);
3556 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3558 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3559 #ifdef DEBUG_X_COLORS
3560 register_color (img
->colors
[i
]);
3563 #endif /* not ALLOC_XPM_COLORS */
3565 img
->width
= attrs
.width
;
3566 img
->height
= attrs
.height
;
3567 xassert (img
->width
> 0 && img
->height
> 0);
3569 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3571 fn_XpmFreeAttributes (&attrs
);
3573 XpmFreeAttributes (&attrs
);
3574 #endif /* HAVE_NTGUI */
3580 #endif /* HAVE_NTGUI */
3585 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3588 case XpmFileInvalid
:
3589 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3593 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3596 case XpmColorFailed
:
3597 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3601 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3606 #ifdef ALLOC_XPM_COLORS
3607 xpm_free_color_cache ();
3609 return rc
== XpmSuccess
;
3612 #endif /* HAVE_XPM */
3614 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3616 /* XPM support functions for NS where libxpm is not available.
3617 Only XPM version 3 (without any extensions) is supported. */
3619 static int xpm_scan (const unsigned char **, const unsigned char *,
3620 const unsigned char **, int *);
3621 static Lisp_Object xpm_make_color_table_v
3622 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3623 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3624 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3626 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3627 const unsigned char *, int);
3628 static Lisp_Object xpm_make_color_table_h
3629 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3630 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3631 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3633 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3634 const unsigned char *, int);
3635 static int xpm_str_to_color_key (const char *);
3636 static int xpm_load_image (struct frame
*, struct image
*,
3637 const unsigned char *, const unsigned char *);
3639 /* Tokens returned from xpm_scan. */
3648 /* Scan an XPM data and return a character (< 256) or a token defined
3649 by enum xpm_token above. *S and END are the start (inclusive) and
3650 the end (exclusive) addresses of the data, respectively. Advance
3651 *S while scanning. If token is either XPM_TK_IDENT or
3652 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3653 length of the corresponding token, respectively. */
3656 xpm_scan (const unsigned char **s
,
3657 const unsigned char *end
,
3658 const unsigned char **beg
,
3665 /* Skip white-space. */
3666 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3669 /* gnus-pointer.xpm uses '-' in its identifier.
3670 sb-dir-plus.xpm uses '+' in its identifier. */
3671 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3675 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3678 return XPM_TK_IDENT
;
3683 while (*s
< end
&& **s
!= '"')
3688 return XPM_TK_STRING
;
3692 if (*s
< end
&& **s
== '*')
3694 /* C-style comment. */
3698 while (*s
< end
&& *(*s
)++ != '*')
3701 while (*s
< end
&& **s
!= '/');
3715 /* Functions for color table lookup in XPM data. A key is a string
3716 specifying the color of each pixel in XPM data. A value is either
3717 an integer that specifies a pixel color, Qt that specifies
3718 transparency, or Qnil for the unspecified color. If the length of
3719 the key string is one, a vector is used as a table. Otherwise, a
3720 hash table is used. */
3723 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3724 const unsigned char *,
3727 Lisp_Object (**get_func
) (Lisp_Object
,
3728 const unsigned char *,
3731 *put_func
= xpm_put_color_table_v
;
3732 *get_func
= xpm_get_color_table_v
;
3733 return Fmake_vector (make_number (256), Qnil
);
3737 xpm_put_color_table_v (Lisp_Object color_table
,
3738 const unsigned char *chars_start
,
3742 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3746 xpm_get_color_table_v (Lisp_Object color_table
,
3747 const unsigned char *chars_start
,
3750 return XVECTOR (color_table
)->contents
[*chars_start
];
3754 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3755 const unsigned char *,
3758 Lisp_Object (**get_func
) (Lisp_Object
,
3759 const unsigned char *,
3762 *put_func
= xpm_put_color_table_h
;
3763 *get_func
= xpm_get_color_table_h
;
3764 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3765 make_float (DEFAULT_REHASH_SIZE
),
3766 make_float (DEFAULT_REHASH_THRESHOLD
),
3771 xpm_put_color_table_h (Lisp_Object color_table
,
3772 const unsigned char *chars_start
,
3776 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3778 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3780 hash_lookup (table
, chars
, &hash_code
);
3781 hash_put (table
, chars
, color
, hash_code
);
3785 xpm_get_color_table_h (Lisp_Object color_table
,
3786 const unsigned char *chars_start
,
3789 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3790 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3793 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3796 enum xpm_color_key
{
3804 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3807 xpm_str_to_color_key (const char *s
)
3812 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3814 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3820 xpm_load_image (struct frame
*f
,
3822 const unsigned char *contents
,
3823 const unsigned char *end
)
3825 const unsigned char *s
= contents
, *beg
, *str
;
3826 unsigned char buffer
[BUFSIZ
];
3827 int width
, height
, x
, y
;
3828 int num_colors
, chars_per_pixel
;
3830 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3831 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3832 Lisp_Object frame
, color_symbols
, color_table
;
3833 int best_key
, have_mask
= 0;
3834 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3837 LA1 = xpm_scan (&s, end, &beg, &len)
3839 #define expect(TOKEN) \
3840 if (LA1 != (TOKEN)) \
3845 #define expect_ident(IDENT) \
3846 if (LA1 == XPM_TK_IDENT \
3847 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3852 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3856 expect_ident ("static");
3857 expect_ident ("char");
3859 expect (XPM_TK_IDENT
);
3864 expect (XPM_TK_STRING
);
3867 memcpy (buffer
, beg
, len
);
3869 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3870 &num_colors
, &chars_per_pixel
) != 4
3871 || width
<= 0 || height
<= 0
3872 || num_colors
<= 0 || chars_per_pixel
<= 0)
3875 if (!check_image_size (f
, width
, height
))
3877 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3883 XSETFRAME (frame
, f
);
3884 if (!NILP (Fxw_display_color_p (frame
)))
3885 best_key
= XPM_COLOR_KEY_C
;
3886 else if (!NILP (Fx_display_grayscale_p (frame
)))
3887 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3888 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3890 best_key
= XPM_COLOR_KEY_M
;
3892 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3893 if (chars_per_pixel
== 1)
3894 color_table
= xpm_make_color_table_v (&put_color_table
,
3897 color_table
= xpm_make_color_table_h (&put_color_table
,
3900 while (num_colors
-- > 0)
3902 char *color
, *max_color
;
3903 int key
, next_key
, max_key
= 0;
3904 Lisp_Object symbol_color
= Qnil
, color_val
;
3907 expect (XPM_TK_STRING
);
3908 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3910 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3911 buffer
[len
- chars_per_pixel
] = '\0';
3913 str
= strtok (buffer
, " \t");
3916 key
= xpm_str_to_color_key (str
);
3921 color
= strtok (NULL
, " \t");
3925 while ((str
= strtok (NULL
, " \t")) != NULL
)
3927 next_key
= xpm_str_to_color_key (str
);
3930 color
[strlen (color
)] = ' ';
3933 if (key
== XPM_COLOR_KEY_S
)
3935 if (NILP (symbol_color
))
3936 symbol_color
= build_string (color
);
3938 else if (max_key
< key
&& key
<= best_key
)
3948 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3950 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3952 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3954 if (xstrcasecmp (SSDATA (XCDR (specified_color
)), "None") == 0)
3956 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3958 color_val
= make_number (cdef
.pixel
);
3961 if (NILP (color_val
) && max_key
> 0)
3963 if (xstrcasecmp (max_color
, "None") == 0)
3965 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3966 color_val
= make_number (cdef
.pixel
);
3968 if (!NILP (color_val
))
3969 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3974 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3975 &ximg
, &img
->pixmap
)
3977 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3978 &mask_img
, &img
->mask
)
3982 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3986 for (y
= 0; y
< height
; y
++)
3988 expect (XPM_TK_STRING
);
3990 if (len
< width
* chars_per_pixel
)
3992 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3994 Lisp_Object color_val
=
3995 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
3997 XPutPixel (ximg
, x
, y
,
3998 (INTEGERP (color_val
) ? XINT (color_val
)
3999 : FRAME_FOREGROUND_PIXEL (f
)));
4001 XPutPixel (mask_img
, x
, y
,
4002 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4003 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4005 if (EQ (color_val
, Qt
))
4006 ns_set_alpha (ximg
, x
, y
, 0);
4014 img
->height
= height
;
4016 /* Maybe fill in the background field while we have ximg handy. */
4017 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4018 IMAGE_BACKGROUND (img
, f
, ximg
);
4020 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4021 x_destroy_x_image (ximg
);
4025 /* Fill in the background_transparent field while we have the
4027 image_background_transparent (img
, f
, mask_img
);
4029 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4030 x_destroy_x_image (mask_img
);
4034 x_destroy_x_image (mask_img
);
4035 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4036 img
->mask
= NO_PIXMAP
;
4042 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4044 x_destroy_x_image (ximg
);
4045 x_destroy_x_image (mask_img
);
4046 x_clear_image (f
, img
);
4055 xpm_load (struct frame
*f
,
4059 Lisp_Object file_name
;
4061 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4062 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4063 if (STRINGP (file_name
))
4066 unsigned char *contents
;
4069 file
= x_find_image_file (file_name
);
4070 if (!STRINGP (file
))
4072 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4076 contents
= slurp_file (SDATA (file
), &size
);
4077 if (contents
== NULL
)
4079 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4083 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4090 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4091 if (!STRINGP (data
))
4093 image_error ("Invalid image data `%s'", data
, Qnil
);
4096 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4097 SDATA (data
) + SBYTES (data
));
4103 #endif /* HAVE_NS && !HAVE_XPM */
4107 /***********************************************************************
4109 ***********************************************************************/
4111 #ifdef COLOR_TABLE_SUPPORT
4113 /* An entry in the color table mapping an RGB color to a pixel color. */
4118 unsigned long pixel
;
4120 /* Next in color table collision list. */
4121 struct ct_color
*next
;
4124 /* The bucket vector size to use. Must be prime. */
4128 /* Value is a hash of the RGB color given by R, G, and B. */
4130 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4132 /* The color hash table. */
4134 struct ct_color
**ct_table
;
4136 /* Number of entries in the color table. */
4138 int ct_colors_allocated
;
4140 /* Initialize the color table. */
4143 init_color_table (void)
4145 int size
= CT_SIZE
* sizeof (*ct_table
);
4146 ct_table
= (struct ct_color
**) xmalloc (size
);
4147 memset (ct_table
, 0, size
);
4148 ct_colors_allocated
= 0;
4152 /* Free memory associated with the color table. */
4155 free_color_table (void)
4158 struct ct_color
*p
, *next
;
4160 for (i
= 0; i
< CT_SIZE
; ++i
)
4161 for (p
= ct_table
[i
]; p
; p
= next
)
4172 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4173 entry for that color already is in the color table, return the
4174 pixel color of that entry. Otherwise, allocate a new color for R,
4175 G, B, and make an entry in the color table. */
4177 static unsigned long
4178 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4180 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4181 int i
= hash
% CT_SIZE
;
4183 Display_Info
*dpyinfo
;
4185 /* Handle TrueColor visuals specially, which improves performance by
4186 two orders of magnitude. Freeing colors on TrueColor visuals is
4187 a nop, and pixel colors specify RGB values directly. See also
4188 the Xlib spec, chapter 3.1. */
4189 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4190 if (dpyinfo
->red_bits
> 0)
4192 unsigned long pr
, pg
, pb
;
4194 /* Apply gamma-correction like normal color allocation does. */
4198 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4199 gamma_correct (f
, &color
);
4200 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4203 /* Scale down RGB values to the visual's bits per RGB, and shift
4204 them to the right position in the pixel color. Note that the
4205 original RGB values are 16-bit values, as usual in X. */
4206 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4207 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4208 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4210 /* Assemble the pixel color. */
4211 return pr
| pg
| pb
;
4214 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4215 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4221 #ifdef HAVE_X_WINDOWS
4230 cmap
= FRAME_X_COLORMAP (f
);
4231 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4234 ++ct_colors_allocated
;
4235 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4239 p
->pixel
= color
.pixel
;
4240 p
->next
= ct_table
[i
];
4244 return FRAME_FOREGROUND_PIXEL (f
);
4249 color
= PALETTERGB (r
, g
, b
);
4251 color
= RGB_TO_ULONG (r
, g
, b
);
4252 #endif /* HAVE_NTGUI */
4253 ++ct_colors_allocated
;
4254 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4259 p
->next
= ct_table
[i
];
4261 #endif /* HAVE_X_WINDOWS */
4269 /* Look up pixel color PIXEL which is used on frame F in the color
4270 table. If not already present, allocate it. Value is PIXEL. */
4272 static unsigned long
4273 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4275 int i
= pixel
% CT_SIZE
;
4278 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4279 if (p
->pixel
== pixel
)
4288 #ifdef HAVE_X_WINDOWS
4289 cmap
= FRAME_X_COLORMAP (f
);
4290 color
.pixel
= pixel
;
4291 x_query_color (f
, &color
);
4292 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4295 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4296 color
.pixel
= pixel
;
4297 XQueryColor (NULL
, cmap
, &color
);
4298 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4300 #endif /* HAVE_X_WINDOWS */
4304 ++ct_colors_allocated
;
4306 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4311 p
->next
= ct_table
[i
];
4315 return FRAME_FOREGROUND_PIXEL (f
);
4321 /* Value is a vector of all pixel colors contained in the color table,
4322 allocated via xmalloc. Set *N to the number of colors. */
4324 static unsigned long *
4325 colors_in_color_table (int *n
)
4329 unsigned long *colors
;
4331 if (ct_colors_allocated
== 0)
4338 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4340 *n
= ct_colors_allocated
;
4342 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4343 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4344 colors
[j
++] = p
->pixel
;
4350 #else /* COLOR_TABLE_SUPPORT */
4352 static unsigned long
4353 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4355 unsigned long pixel
;
4358 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4359 #endif /* HAVE_NTGUI */
4362 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4363 #endif /* HAVE_NS */
4368 init_color_table (void)
4371 #endif /* COLOR_TABLE_SUPPORT */
4374 /***********************************************************************
4376 ***********************************************************************/
4378 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4379 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4380 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4383 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4384 #endif /* HAVE_NTGUI */
4386 /* Edge detection matrices for different edge-detection
4389 static int emboss_matrix
[9] = {
4391 2, -1, 0, /* y - 1 */
4393 0, 1, -2 /* y + 1 */
4396 static int laplace_matrix
[9] = {
4398 1, 0, 0, /* y - 1 */
4400 0, 0, -1 /* y + 1 */
4403 /* Value is the intensity of the color whose red/green/blue values
4406 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4409 /* On frame F, return an array of XColor structures describing image
4410 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4411 non-zero means also fill the red/green/blue members of the XColor
4412 structures. Value is a pointer to the array of XColors structures,
4413 allocated with xmalloc; it must be freed by the caller. */
4416 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4420 XImagePtr_or_DC ximg
;
4424 #endif /* HAVE_NTGUI */
4426 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4429 /* Get the X image IMG->pixmap. */
4430 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4431 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4433 /* Load the image into a memory device context. */
4434 hdc
= get_frame_dc (f
);
4435 ximg
= CreateCompatibleDC (hdc
);
4436 release_frame_dc (f
, hdc
);
4437 prev
= SelectObject (ximg
, img
->pixmap
);
4438 #endif /* HAVE_NTGUI */
4440 /* Fill the `pixel' members of the XColor array. I wished there
4441 were an easy and portable way to circumvent XGetPixel. */
4443 for (y
= 0; y
< img
->height
; ++y
)
4447 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4448 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4449 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4451 x_query_colors (f
, row
, img
->width
);
4455 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4457 /* W32_TODO: palette support needed here? */
4458 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4461 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4462 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4463 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4466 #endif /* HAVE_X_WINDOWS */
4469 Destroy_Image (ximg
, prev
);
4476 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4477 created with CreateDIBSection, with the pointer to the bit values
4478 stored in ximg->data. */
4481 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4483 int width
= ximg
->info
.bmiHeader
.biWidth
;
4484 unsigned char * pixel
;
4486 /* True color images. */
4487 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4489 int rowbytes
= width
* 3;
4490 /* Ensure scanlines are aligned on 4 byte boundaries. */
4492 rowbytes
+= 4 - (rowbytes
% 4);
4494 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4495 /* Windows bitmaps are in BGR order. */
4496 *pixel
= GetBValue (color
);
4497 *(pixel
+ 1) = GetGValue (color
);
4498 *(pixel
+ 2) = GetRValue (color
);
4500 /* Monochrome images. */
4501 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4503 int rowbytes
= width
/ 8;
4504 /* Ensure scanlines are aligned on 4 byte boundaries. */
4506 rowbytes
+= 4 - (rowbytes
% 4);
4507 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4508 /* Filter out palette info. */
4509 if (color
& 0x00ffffff)
4510 *pixel
= *pixel
| (1 << x
% 8);
4512 *pixel
= *pixel
& ~(1 << x
% 8);
4515 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4518 #endif /* HAVE_NTGUI */
4520 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4521 RGB members are set. F is the frame on which this all happens.
4522 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4525 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4528 XImagePtr oimg
= NULL
;
4532 init_color_table ();
4534 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4537 for (y
= 0; y
< img
->height
; ++y
)
4538 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4540 unsigned long pixel
;
4541 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4542 XPutPixel (oimg
, x
, y
, pixel
);
4546 x_clear_image_1 (f
, img
, 1, 0, 1);
4548 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4549 x_destroy_x_image (oimg
);
4550 img
->pixmap
= pixmap
;
4551 #ifdef COLOR_TABLE_SUPPORT
4552 img
->colors
= colors_in_color_table (&img
->ncolors
);
4553 free_color_table ();
4554 #endif /* COLOR_TABLE_SUPPORT */
4558 /* On frame F, perform edge-detection on image IMG.
4560 MATRIX is a nine-element array specifying the transformation
4561 matrix. See emboss_matrix for an example.
4563 COLOR_ADJUST is a color adjustment added to each pixel of the
4567 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4569 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4573 for (i
= sum
= 0; i
< 9; ++i
)
4574 sum
+= eabs (matrix
[i
]);
4576 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4578 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4580 for (y
= 0; y
< img
->height
; ++y
)
4582 p
= COLOR (new, 0, y
);
4583 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4584 p
= COLOR (new, img
->width
- 1, y
);
4585 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4588 for (x
= 1; x
< img
->width
- 1; ++x
)
4590 p
= COLOR (new, x
, 0);
4591 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4592 p
= COLOR (new, x
, img
->height
- 1);
4593 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4596 for (y
= 1; y
< img
->height
- 1; ++y
)
4598 p
= COLOR (new, 1, y
);
4600 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4602 int r
, g
, b
, yy
, xx
;
4605 for (yy
= y
- 1; yy
< y
+ 2; ++yy
)
4606 for (xx
= x
- 1; xx
< x
+ 2; ++xx
, ++i
)
4609 XColor
*t
= COLOR (colors
, xx
, yy
);
4610 r
+= matrix
[i
] * t
->red
;
4611 g
+= matrix
[i
] * t
->green
;
4612 b
+= matrix
[i
] * t
->blue
;
4615 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4616 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4617 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4618 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4623 x_from_xcolors (f
, img
, new);
4629 /* Perform the pre-defined `emboss' edge-detection on image IMG
4633 x_emboss (struct frame
*f
, struct image
*img
)
4635 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4639 /* Transform image IMG which is used on frame F with a Laplace
4640 edge-detection algorithm. The result is an image that can be used
4641 to draw disabled buttons, for example. */
4644 x_laplace (struct frame
*f
, struct image
*img
)
4646 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4650 /* Perform edge-detection on image IMG on frame F, with specified
4651 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4653 MATRIX must be either
4655 - a list of at least 9 numbers in row-major form
4656 - a vector of at least 9 numbers
4658 COLOR_ADJUST nil means use a default; otherwise it must be a
4662 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4663 Lisp_Object color_adjust
)
4671 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4672 ++i
, matrix
= XCDR (matrix
))
4673 trans
[i
] = XFLOATINT (XCAR (matrix
));
4675 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4677 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4678 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4681 if (NILP (color_adjust
))
4682 color_adjust
= make_number (0xffff / 2);
4684 if (i
== 9 && NUMBERP (color_adjust
))
4685 x_detect_edges (f
, img
, trans
, XFLOATINT (color_adjust
));
4689 /* Transform image IMG on frame F so that it looks disabled. */
4692 x_disable_image (struct frame
*f
, struct image
*img
)
4694 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4696 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4698 int n_planes
= dpyinfo
->n_planes
;
4699 #endif /* HAVE_NTGUI */
4703 /* Color (or grayscale). Convert to gray, and equalize. Just
4704 drawing such images with a stipple can look very odd, so
4705 we're using this method instead. */
4706 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4708 const int h
= 15000;
4709 const int l
= 30000;
4711 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4715 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4716 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4717 p
->red
= p
->green
= p
->blue
= i2
;
4720 x_from_xcolors (f
, img
, colors
);
4723 /* Draw a cross over the disabled image, if we must or if we
4725 if (n_planes
< 2 || cross_disabled_images
)
4728 Display
*dpy
= FRAME_X_DISPLAY (f
);
4731 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4733 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4735 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4736 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4737 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4738 img
->width
- 1, img
->height
- 1);
4739 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4745 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4746 XSetForeground (dpy
, gc
, MaskForeground (f
));
4747 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4748 img
->width
- 1, img
->height
- 1);
4749 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4753 #endif /* !HAVE_NS */
4758 hdc
= get_frame_dc (f
);
4759 bmpdc
= CreateCompatibleDC (hdc
);
4760 release_frame_dc (f
, hdc
);
4762 prev
= SelectObject (bmpdc
, img
->pixmap
);
4764 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4765 MoveToEx (bmpdc
, 0, 0, NULL
);
4766 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4767 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4768 LineTo (bmpdc
, img
->width
- 1, 0);
4772 SelectObject (bmpdc
, img
->mask
);
4773 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4774 MoveToEx (bmpdc
, 0, 0, NULL
);
4775 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4776 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4777 LineTo (bmpdc
, img
->width
- 1, 0);
4779 SelectObject (bmpdc
, prev
);
4781 #endif /* HAVE_NTGUI */
4786 /* Build a mask for image IMG which is used on frame F. FILE is the
4787 name of an image file, for error messages. HOW determines how to
4788 determine the background color of IMG. If it is a list '(R G B)',
4789 with R, G, and B being integers >= 0, take that as the color of the
4790 background. Otherwise, determine the background color of IMG
4791 heuristically. Value is non-zero if successful. */
4794 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4796 XImagePtr_or_DC ximg
;
4804 #endif /* HAVE_NTGUI */
4805 int x
, y
, rc
, use_img_background
;
4806 unsigned long bg
= 0;
4810 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4811 img
->mask
= NO_PIXMAP
;
4812 img
->background_transparent_valid
= 0;
4817 /* Create an image and pixmap serving as mask. */
4818 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4819 &mask_img
, &img
->mask
);
4822 #endif /* !HAVE_NS */
4824 /* Get the X image of IMG->pixmap. */
4825 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4826 img
->width
, img
->height
,
4829 /* Create the bit array serving as mask. */
4830 row_width
= (img
->width
+ 7) / 8;
4831 mask_img
= xmalloc (row_width
* img
->height
);
4832 memset (mask_img
, 0, row_width
* img
->height
);
4834 /* Create a memory device context for IMG->pixmap. */
4835 frame_dc
= get_frame_dc (f
);
4836 ximg
= CreateCompatibleDC (frame_dc
);
4837 release_frame_dc (f
, frame_dc
);
4838 prev
= SelectObject (ximg
, img
->pixmap
);
4839 #endif /* HAVE_NTGUI */
4841 /* Determine the background color of ximg. If HOW is `(R G B)'
4842 take that as color. Otherwise, use the image's background color. */
4843 use_img_background
= 1;
4849 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4851 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4855 if (i
== 3 && NILP (how
))
4857 char color_name
[30];
4858 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4861 0x00ffffff & /* Filter out palette info. */
4862 #endif /* HAVE_NTGUI */
4863 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4864 use_img_background
= 0;
4868 if (use_img_background
)
4869 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4871 /* Set all bits in mask_img to 1 whose color in ximg is different
4872 from the background color bg. */
4874 for (y
= 0; y
< img
->height
; ++y
)
4875 for (x
= 0; x
< img
->width
; ++x
)
4877 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4878 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4880 if (XGetPixel (ximg
, x
, y
) == bg
)
4881 ns_set_alpha (ximg
, x
, y
, 0);
4882 #endif /* HAVE_NS */
4884 /* Fill in the background_transparent field while we have the mask handy. */
4885 image_background_transparent (img
, f
, mask_img
);
4887 /* Put mask_img into img->mask. */
4888 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4889 x_destroy_x_image (mask_img
);
4890 #endif /* !HAVE_NS */
4892 for (y
= 0; y
< img
->height
; ++y
)
4893 for (x
= 0; x
< img
->width
; ++x
)
4895 COLORREF p
= GetPixel (ximg
, x
, y
);
4897 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4900 /* Create the mask image. */
4901 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4903 /* Fill in the background_transparent field while we have the mask handy. */
4904 SelectObject (ximg
, img
->mask
);
4905 image_background_transparent (img
, f
, ximg
);
4907 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4909 #endif /* HAVE_NTGUI */
4911 Destroy_Image (ximg
, prev
);
4917 /***********************************************************************
4918 PBM (mono, gray, color)
4919 ***********************************************************************/
4921 static int pbm_image_p (Lisp_Object object
);
4922 static int pbm_load (struct frame
*f
, struct image
*img
);
4923 static int pbm_scan_number (unsigned char **, unsigned char *);
4925 /* The symbol `pbm' identifying images of this type. */
4929 /* Indices of image specification fields in gs_format, below. */
4931 enum pbm_keyword_index
4947 /* Vector of image_keyword structures describing the format
4948 of valid user-defined image specifications. */
4950 static const struct image_keyword pbm_format
[PBM_LAST
] =
4952 {":type", IMAGE_SYMBOL_VALUE
, 1},
4953 {":file", IMAGE_STRING_VALUE
, 0},
4954 {":data", IMAGE_STRING_VALUE
, 0},
4955 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4956 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4957 {":relief", IMAGE_INTEGER_VALUE
, 0},
4958 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4959 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4960 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4961 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4962 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4965 /* Structure describing the image type `pbm'. */
4967 static struct image_type pbm_type
=
4977 /* Return non-zero if OBJECT is a valid PBM image specification. */
4980 pbm_image_p (Lisp_Object object
)
4982 struct image_keyword fmt
[PBM_LAST
];
4984 memcpy (fmt
, pbm_format
, sizeof fmt
);
4986 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4989 /* Must specify either :data or :file. */
4990 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4994 /* Scan a decimal number from *S and return it. Advance *S while
4995 reading the number. END is the end of the string. Value is -1 at
4999 pbm_scan_number (unsigned char **s
, unsigned char *end
)
5001 int c
= 0, val
= -1;
5005 /* Skip white-space. */
5006 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5011 /* Skip comment to end of line. */
5012 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5015 else if (isdigit (c
))
5017 /* Read decimal number. */
5019 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5020 val
= 10 * val
+ c
- '0';
5032 #if 0 /* Unused. ++kfs */
5034 /* Read FILE into memory. Value is a pointer to a buffer allocated
5035 with xmalloc holding FILE's contents. Value is null if an error
5036 occurred. *SIZE is set to the size of the file. */
5039 pbm_read_file (file
, size
)
5047 if (stat (SDATA (file
), &st
) == 0
5048 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5049 && (buf
= (char *) xmalloc (st
.st_size
),
5050 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5069 #endif /* HAVE_NTGUI */
5071 /* Load PBM image IMG for use on frame F. */
5074 pbm_load (struct frame
*f
, struct image
*img
)
5077 int width
, height
, max_color_idx
= 0;
5079 Lisp_Object file
, specified_file
;
5080 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5081 unsigned char *contents
= NULL
;
5082 unsigned char *end
, *p
;
5085 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5087 if (STRINGP (specified_file
))
5089 file
= x_find_image_file (specified_file
);
5090 if (!STRINGP (file
))
5092 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5096 contents
= slurp_file (SSDATA (file
), &size
);
5097 if (contents
== NULL
)
5099 image_error ("Error reading `%s'", file
, Qnil
);
5104 end
= contents
+ size
;
5109 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5110 if (!STRINGP (data
))
5112 image_error ("Invalid image data `%s'", data
, Qnil
);
5116 end
= p
+ SBYTES (data
);
5119 /* Check magic number. */
5120 if (end
- p
< 2 || *p
++ != 'P')
5122 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5131 raw_p
= 0, type
= PBM_MONO
;
5135 raw_p
= 0, type
= PBM_GRAY
;
5139 raw_p
= 0, type
= PBM_COLOR
;
5143 raw_p
= 1, type
= PBM_MONO
;
5147 raw_p
= 1, type
= PBM_GRAY
;
5151 raw_p
= 1, type
= PBM_COLOR
;
5155 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5159 /* Read width, height, maximum color-component. Characters
5160 starting with `#' up to the end of a line are ignored. */
5161 width
= pbm_scan_number (&p
, end
);
5162 height
= pbm_scan_number (&p
, end
);
5164 if (type
!= PBM_MONO
)
5166 max_color_idx
= pbm_scan_number (&p
, end
);
5167 if (max_color_idx
> 65535 || max_color_idx
< 0)
5169 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5174 if (!check_image_size (f
, width
, height
))
5176 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5180 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5181 &ximg
, &img
->pixmap
))
5184 /* Initialize the color hash table. */
5185 init_color_table ();
5187 if (type
== PBM_MONO
)
5190 struct image_keyword fmt
[PBM_LAST
];
5191 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5192 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5194 /* Parse the image specification. */
5195 memcpy (fmt
, pbm_format
, sizeof fmt
);
5196 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5198 /* Get foreground and background colors, maybe allocate colors. */
5199 if (fmt
[PBM_FOREGROUND
].count
5200 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5201 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5202 if (fmt
[PBM_BACKGROUND
].count
5203 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5205 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5206 img
->background
= bg
;
5207 img
->background_valid
= 1;
5210 for (y
= 0; y
< height
; ++y
)
5211 for (x
= 0; x
< width
; ++x
)
5219 x_destroy_x_image (ximg
);
5220 x_clear_image (f
, img
);
5221 image_error ("Invalid image size in image `%s'",
5231 g
= pbm_scan_number (&p
, end
);
5233 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5238 int expected_size
= height
* width
;
5239 if (max_color_idx
> 255)
5241 if (type
== PBM_COLOR
)
5244 if (raw_p
&& p
+ expected_size
> end
)
5246 x_destroy_x_image (ximg
);
5247 x_clear_image (f
, img
);
5248 image_error ("Invalid image size in image `%s'",
5253 for (y
= 0; y
< height
; ++y
)
5254 for (x
= 0; x
< width
; ++x
)
5258 if (type
== PBM_GRAY
&& raw_p
)
5261 if (max_color_idx
> 255)
5262 r
= g
= b
= r
* 256 + *p
++;
5264 else if (type
== PBM_GRAY
)
5265 r
= g
= b
= pbm_scan_number (&p
, end
);
5269 if (max_color_idx
> 255)
5272 if (max_color_idx
> 255)
5275 if (max_color_idx
> 255)
5280 r
= pbm_scan_number (&p
, end
);
5281 g
= pbm_scan_number (&p
, end
);
5282 b
= pbm_scan_number (&p
, end
);
5285 if (r
< 0 || g
< 0 || b
< 0)
5287 x_destroy_x_image (ximg
);
5288 image_error ("Invalid pixel value in image `%s'",
5293 /* RGB values are now in the range 0..max_color_idx.
5294 Scale this to the range 0..0xffff supported by X. */
5295 r
= (double) r
* 65535 / max_color_idx
;
5296 g
= (double) g
* 65535 / max_color_idx
;
5297 b
= (double) b
* 65535 / max_color_idx
;
5298 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5302 #ifdef COLOR_TABLE_SUPPORT
5303 /* Store in IMG->colors the colors allocated for the image, and
5304 free the color table. */
5305 img
->colors
= colors_in_color_table (&img
->ncolors
);
5306 free_color_table ();
5307 #endif /* COLOR_TABLE_SUPPORT */
5310 img
->height
= height
;
5312 /* Maybe fill in the background field while we have ximg handy. */
5314 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5315 /* Casting avoids a GCC warning. */
5316 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5318 /* Put the image into a pixmap. */
5319 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5320 x_destroy_x_image (ximg
);
5322 /* X and W32 versions did it here, MAC version above. ++kfs
5324 img->height = height; */
5331 /***********************************************************************
5333 ***********************************************************************/
5335 #if defined (HAVE_PNG) || defined (HAVE_NS)
5337 /* Function prototypes. */
5339 static int png_image_p (Lisp_Object object
);
5340 static int png_load (struct frame
*f
, struct image
*img
);
5342 /* The symbol `png' identifying images of this type. */
5346 /* Indices of image specification fields in png_format, below. */
5348 enum png_keyword_index
5363 /* Vector of image_keyword structures describing the format
5364 of valid user-defined image specifications. */
5366 static const struct image_keyword png_format
[PNG_LAST
] =
5368 {":type", IMAGE_SYMBOL_VALUE
, 1},
5369 {":data", IMAGE_STRING_VALUE
, 0},
5370 {":file", IMAGE_STRING_VALUE
, 0},
5371 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5372 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5373 {":relief", IMAGE_INTEGER_VALUE
, 0},
5374 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5375 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5376 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5377 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5380 /* Structure describing the image type `png'. */
5382 static struct image_type png_type
=
5391 /* Return non-zero if OBJECT is a valid PNG image specification. */
5394 png_image_p (Lisp_Object object
)
5396 struct image_keyword fmt
[PNG_LAST
];
5397 memcpy (fmt
, png_format
, sizeof fmt
);
5399 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5402 /* Must specify either the :data or :file keyword. */
5403 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5406 #endif /* HAVE_PNG || HAVE_NS */
5412 /* PNG library details. */
5414 DEF_IMGLIB_FN (png_voidp
, png_get_io_ptr
, (png_structp
));
5415 DEF_IMGLIB_FN (int, png_sig_cmp
, (png_bytep
, png_size_t
, png_size_t
));
5416 DEF_IMGLIB_FN (png_structp
, png_create_read_struct
, (png_const_charp
, png_voidp
,
5417 png_error_ptr
, png_error_ptr
));
5418 DEF_IMGLIB_FN (png_infop
, png_create_info_struct
, (png_structp
));
5419 DEF_IMGLIB_FN (void, png_destroy_read_struct
, (png_structpp
, png_infopp
, png_infopp
));
5420 DEF_IMGLIB_FN (void, png_set_read_fn
, (png_structp
, png_voidp
, png_rw_ptr
));
5421 DEF_IMGLIB_FN (void, png_set_sig_bytes
, (png_structp
, int));
5422 DEF_IMGLIB_FN (void, png_read_info
, (png_structp
, png_infop
));
5423 DEF_IMGLIB_FN (png_uint_32
, png_get_IHDR
, (png_structp
, png_infop
,
5424 png_uint_32
*, png_uint_32
*,
5425 int *, int *, int *, int *, int *));
5426 DEF_IMGLIB_FN (png_uint_32
, png_get_valid
, (png_structp
, png_infop
, png_uint_32
));
5427 DEF_IMGLIB_FN (void, png_set_strip_16
, (png_structp
));
5428 DEF_IMGLIB_FN (void, png_set_expand
, (png_structp
));
5429 DEF_IMGLIB_FN (void, png_set_gray_to_rgb
, (png_structp
));
5430 DEF_IMGLIB_FN (void, png_set_background
, (png_structp
, png_color_16p
,
5432 DEF_IMGLIB_FN (png_uint_32
, png_get_bKGD
, (png_structp
, png_infop
, png_color_16p
*));
5433 DEF_IMGLIB_FN (void, png_read_update_info
, (png_structp
, png_infop
));
5434 DEF_IMGLIB_FN (png_byte
, png_get_channels
, (png_structp
, png_infop
));
5435 DEF_IMGLIB_FN (png_size_t
, png_get_rowbytes
, (png_structp
, png_infop
));
5436 DEF_IMGLIB_FN (void, png_read_image
, (png_structp
, png_bytepp
));
5437 DEF_IMGLIB_FN (void, png_read_end
, (png_structp
, png_infop
));
5438 DEF_IMGLIB_FN (void, png_error
, (png_structp
, png_const_charp
));
5440 #if (PNG_LIBPNG_VER >= 10500)
5441 DEF_IMGLIB_FN (void, png_longjmp
, (png_structp
, int));
5442 DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn
, (png_structp
, png_longjmp_ptr
, size_t));
5443 #endif /* libpng version >= 1.5 */
5446 init_png_functions (Lisp_Object libraries
)
5450 /* Try loading libpng under probable names. */
5451 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5454 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5455 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5456 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5457 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5458 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5459 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5460 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5461 LOAD_IMGLIB_FN (library
, png_read_info
);
5462 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5463 LOAD_IMGLIB_FN (library
, png_get_valid
);
5464 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5465 LOAD_IMGLIB_FN (library
, png_set_expand
);
5466 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5467 LOAD_IMGLIB_FN (library
, png_set_background
);
5468 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5469 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5470 LOAD_IMGLIB_FN (library
, png_get_channels
);
5471 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5472 LOAD_IMGLIB_FN (library
, png_read_image
);
5473 LOAD_IMGLIB_FN (library
, png_read_end
);
5474 LOAD_IMGLIB_FN (library
, png_error
);
5476 #if (PNG_LIBPNG_VER >= 10500)
5477 LOAD_IMGLIB_FN (library
, png_longjmp
);
5478 LOAD_IMGLIB_FN (library
, png_set_longjmp_fn
);
5479 #endif /* libpng version >= 1.5 */
5485 #define fn_png_get_io_ptr png_get_io_ptr
5486 #define fn_png_sig_cmp png_sig_cmp
5487 #define fn_png_create_read_struct png_create_read_struct
5488 #define fn_png_create_info_struct png_create_info_struct
5489 #define fn_png_destroy_read_struct png_destroy_read_struct
5490 #define fn_png_set_read_fn png_set_read_fn
5491 #define fn_png_set_sig_bytes png_set_sig_bytes
5492 #define fn_png_read_info png_read_info
5493 #define fn_png_get_IHDR png_get_IHDR
5494 #define fn_png_get_valid png_get_valid
5495 #define fn_png_set_strip_16 png_set_strip_16
5496 #define fn_png_set_expand png_set_expand
5497 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5498 #define fn_png_set_background png_set_background
5499 #define fn_png_get_bKGD png_get_bKGD
5500 #define fn_png_read_update_info png_read_update_info
5501 #define fn_png_get_channels png_get_channels
5502 #define fn_png_get_rowbytes png_get_rowbytes
5503 #define fn_png_read_image png_read_image
5504 #define fn_png_read_end png_read_end
5505 #define fn_png_error png_error
5507 #if (PNG_LIBPNG_VER >= 10500)
5508 #define fn_png_longjmp png_longjmp
5509 #define fn_png_set_longjmp_fn png_set_longjmp_fn
5510 #endif /* libpng version >= 1.5 */
5512 #endif /* HAVE_NTGUI */
5515 #if (PNG_LIBPNG_VER < 10500)
5516 #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1))
5517 #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf)
5519 /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */
5520 #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1))
5521 #define PNG_JMPBUF(ptr) \
5522 (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf)))
5525 /* Error and warning handlers installed when the PNG library
5528 static void my_png_error (png_struct
*, const char *) NO_RETURN
;
5530 my_png_error (png_struct
*png_ptr
, const char *msg
)
5532 xassert (png_ptr
!= NULL
);
5533 /* Avoid compiler warning about deprecated direct access to
5534 png_ptr's fields in libpng versions 1.4.x. */
5535 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5536 PNG_LONGJMP (png_ptr
);
5541 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5543 xassert (png_ptr
!= NULL
);
5544 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5547 /* Memory source for PNG decoding. */
5549 struct png_memory_storage
5551 unsigned char *bytes
; /* The data */
5552 size_t len
; /* How big is it? */
5553 int index
; /* Where are we? */
5557 /* Function set as reader function when reading PNG image from memory.
5558 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5559 bytes from the input to DATA. */
5562 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5564 struct png_memory_storage
*tbr
5565 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5567 if (length
> tbr
->len
- tbr
->index
)
5568 fn_png_error (png_ptr
, "Read error");
5570 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5571 tbr
->index
= tbr
->index
+ length
;
5575 /* Function set as reader function when reading PNG image from a file.
5576 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5577 bytes from the input to DATA. */
5580 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5582 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5584 if (fread (data
, 1, length
, fp
) < length
)
5585 fn_png_error (png_ptr
, "Read error");
5589 /* Load PNG image IMG for use on frame F. Value is non-zero if
5593 png_load (struct frame
*f
, struct image
*img
)
5595 Lisp_Object file
, specified_file
;
5596 Lisp_Object specified_data
;
5598 XImagePtr ximg
, mask_img
= NULL
;
5599 png_struct
*png_ptr
= NULL
;
5600 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5601 FILE *volatile fp
= NULL
;
5603 png_byte
* volatile pixels
= NULL
;
5604 png_byte
** volatile rows
= NULL
;
5605 png_uint_32 width
, height
;
5606 int bit_depth
, color_type
, interlace_type
;
5608 png_uint_32 row_bytes
;
5610 struct png_memory_storage tbr
; /* Data to be read */
5612 /* Find out what file to load. */
5613 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5614 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5616 if (NILP (specified_data
))
5618 file
= x_find_image_file (specified_file
);
5619 if (!STRINGP (file
))
5621 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5625 /* Open the image file. */
5626 fp
= fopen (SSDATA (file
), "rb");
5629 image_error ("Cannot open image file `%s'", file
, Qnil
);
5633 /* Check PNG signature. */
5634 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5635 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5637 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5644 if (!STRINGP (specified_data
))
5646 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
5650 /* Read from memory. */
5651 tbr
.bytes
= SDATA (specified_data
);
5652 tbr
.len
= SBYTES (specified_data
);
5655 /* Check PNG signature. */
5656 if (tbr
.len
< sizeof sig
5657 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5659 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5663 /* Need to skip past the signature. */
5664 tbr
.bytes
+= sizeof (sig
);
5667 /* Initialize read and info structs for PNG lib. */
5668 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5673 if (fp
) fclose (fp
);
5677 info_ptr
= fn_png_create_info_struct (png_ptr
);
5680 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5681 if (fp
) fclose (fp
);
5685 end_info
= fn_png_create_info_struct (png_ptr
);
5688 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5689 if (fp
) fclose (fp
);
5693 /* Set error jump-back. We come back here when the PNG library
5694 detects an error. */
5695 if (setjmp (PNG_JMPBUF (png_ptr
)))
5699 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5702 if (fp
) fclose (fp
);
5706 /* Read image info. */
5707 if (!NILP (specified_data
))
5708 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5710 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5712 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5713 fn_png_read_info (png_ptr
, info_ptr
);
5714 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5715 &interlace_type
, NULL
, NULL
);
5717 if (!check_image_size (f
, width
, height
))
5719 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5722 /* If image contains simply transparency data, we prefer to
5723 construct a clipping mask. */
5724 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5729 /* This function is easier to write if we only have to handle
5730 one data format: RGB or RGBA with 8 bits per channel. Let's
5731 transform other formats into that format. */
5733 /* Strip more than 8 bits per channel. */
5734 if (bit_depth
== 16)
5735 fn_png_set_strip_16 (png_ptr
);
5737 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5739 fn_png_set_expand (png_ptr
);
5741 /* Convert grayscale images to RGB. */
5742 if (color_type
== PNG_COLOR_TYPE_GRAY
5743 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5744 fn_png_set_gray_to_rgb (png_ptr
);
5746 /* Handle alpha channel by combining the image with a background
5747 color. Do this only if a real alpha channel is supplied. For
5748 simple transparency, we prefer a clipping mask. */
5751 /* png_color_16 *image_bg; */
5752 Lisp_Object specified_bg
5753 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5754 int shift
= (bit_depth
== 16) ? 0 : 8;
5756 if (STRINGP (specified_bg
))
5757 /* The user specified `:background', use that. */
5760 if (x_defined_color (f
, SSDATA (specified_bg
), &color
, 0))
5762 png_color_16 user_bg
;
5764 memset (&user_bg
, 0, sizeof user_bg
);
5765 user_bg
.red
= color
.red
>> shift
;
5766 user_bg
.green
= color
.green
>> shift
;
5767 user_bg
.blue
= color
.blue
>> shift
;
5769 fn_png_set_background (png_ptr
, &user_bg
,
5770 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5775 /* We use the current frame background, ignoring any default
5776 background color set by the image. */
5777 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5779 png_color_16 frame_background
;
5781 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5782 x_query_color (f
, &color
);
5784 memset (&frame_background
, 0, sizeof frame_background
);
5785 frame_background
.red
= color
.red
>> shift
;
5786 frame_background
.green
= color
.green
>> shift
;
5787 frame_background
.blue
= color
.blue
>> shift
;
5788 #endif /* HAVE_X_WINDOWS */
5790 fn_png_set_background (png_ptr
, &frame_background
,
5791 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5795 /* Update info structure. */
5796 fn_png_read_update_info (png_ptr
, info_ptr
);
5798 /* Get number of channels. Valid values are 1 for grayscale images
5799 and images with a palette, 2 for grayscale images with transparency
5800 information (alpha channel), 3 for RGB images, and 4 for RGB
5801 images with alpha channel, i.e. RGBA. If conversions above were
5802 sufficient we should only have 3 or 4 channels here. */
5803 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5804 xassert (channels
== 3 || channels
== 4);
5806 /* Number of bytes needed for one row of the image. */
5807 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5809 /* Allocate memory for the image. */
5810 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5811 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5812 for (i
= 0; i
< height
; ++i
)
5813 rows
[i
] = pixels
+ i
* row_bytes
;
5815 /* Read the entire image. */
5816 fn_png_read_image (png_ptr
, rows
);
5817 fn_png_read_end (png_ptr
, info_ptr
);
5824 /* Create the X image and pixmap. */
5825 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5829 /* Create an image and pixmap serving as mask if the PNG image
5830 contains an alpha channel. */
5833 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5834 &mask_img
, &img
->mask
))
5836 x_destroy_x_image (ximg
);
5837 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5838 img
->pixmap
= NO_PIXMAP
;
5842 /* Fill the X image and mask from PNG data. */
5843 init_color_table ();
5845 for (y
= 0; y
< height
; ++y
)
5847 png_byte
*p
= rows
[y
];
5849 for (x
= 0; x
< width
; ++x
)
5856 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5857 /* An alpha channel, aka mask channel, associates variable
5858 transparency with an image. Where other image formats
5859 support binary transparency---fully transparent or fully
5860 opaque---PNG allows up to 254 levels of partial transparency.
5861 The PNG library implements partial transparency by combining
5862 the image with a specified background color.
5864 I'm not sure how to handle this here nicely: because the
5865 background on which the image is displayed may change, for
5866 real alpha channel support, it would be necessary to create
5867 a new image for each possible background.
5869 What I'm doing now is that a mask is created if we have
5870 boolean transparency information. Otherwise I'm using
5871 the frame's background color to combine the image with. */
5876 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5882 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5883 /* Set IMG's background color from the PNG image, unless the user
5887 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5889 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5890 img
->background_valid
= 1;
5894 #ifdef COLOR_TABLE_SUPPORT
5895 /* Remember colors allocated for this image. */
5896 img
->colors
= colors_in_color_table (&img
->ncolors
);
5897 free_color_table ();
5898 #endif /* COLOR_TABLE_SUPPORT */
5901 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5906 img
->height
= height
;
5908 /* Maybe fill in the background field while we have ximg handy.
5909 Casting avoids a GCC warning. */
5910 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5912 /* Put the image into the pixmap, then free the X image and its buffer. */
5913 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5914 x_destroy_x_image (ximg
);
5916 /* Same for the mask. */
5919 /* Fill in the background_transparent field while we have the
5920 mask handy. Casting avoids a GCC warning. */
5921 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5923 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5924 x_destroy_x_image (mask_img
);
5930 #else /* HAVE_PNG */
5934 png_load (struct frame
*f
, struct image
*img
)
5936 return ns_load_image(f
, img
,
5937 image_spec_value (img
->spec
, QCfile
, NULL
),
5938 image_spec_value (img
->spec
, QCdata
, NULL
));
5940 #endif /* HAVE_NS */
5943 #endif /* !HAVE_PNG */
5947 /***********************************************************************
5949 ***********************************************************************/
5951 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5953 static int jpeg_image_p (Lisp_Object object
);
5954 static int jpeg_load (struct frame
*f
, struct image
*img
);
5956 /* The symbol `jpeg' identifying images of this type. */
5960 /* Indices of image specification fields in gs_format, below. */
5962 enum jpeg_keyword_index
5971 JPEG_HEURISTIC_MASK
,
5977 /* Vector of image_keyword structures describing the format
5978 of valid user-defined image specifications. */
5980 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5982 {":type", IMAGE_SYMBOL_VALUE
, 1},
5983 {":data", IMAGE_STRING_VALUE
, 0},
5984 {":file", IMAGE_STRING_VALUE
, 0},
5985 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5986 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5987 {":relief", IMAGE_INTEGER_VALUE
, 0},
5988 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5989 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5990 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5991 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5994 /* Structure describing the image type `jpeg'. */
5996 static struct image_type jpeg_type
=
6005 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6008 jpeg_image_p (Lisp_Object object
)
6010 struct image_keyword fmt
[JPEG_LAST
];
6012 memcpy (fmt
, jpeg_format
, sizeof fmt
);
6014 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6017 /* Must specify either the :data or :file keyword. */
6018 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6021 #endif /* HAVE_JPEG || HAVE_NS */
6025 /* Work around a warning about HAVE_STDLIB_H being redefined in
6027 #ifdef HAVE_STDLIB_H
6028 #undef HAVE_STDLIB_H
6029 #endif /* HAVE_STLIB_H */
6031 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6032 /* In older releases of the jpeg library, jpeglib.h will define boolean
6033 differently depending on __WIN32__, so make sure it is defined. */
6037 #include <jpeglib.h>
6040 #ifdef HAVE_STLIB_H_1
6041 #define HAVE_STDLIB_H 1
6046 /* JPEG library details. */
6047 DEF_IMGLIB_FN (void, jpeg_CreateDecompress
, (j_decompress_ptr
, int, size_t));
6048 DEF_IMGLIB_FN (boolean
, jpeg_start_decompress
, (j_decompress_ptr
));
6049 DEF_IMGLIB_FN (boolean
, jpeg_finish_decompress
, (j_decompress_ptr
));
6050 DEF_IMGLIB_FN (void, jpeg_destroy_decompress
, (j_decompress_ptr
));
6051 DEF_IMGLIB_FN (int, jpeg_read_header
, (j_decompress_ptr
, boolean
));
6052 DEF_IMGLIB_FN (JDIMENSION
, jpeg_read_scanlines
, (j_decompress_ptr
, JSAMPARRAY
, JDIMENSION
));
6053 DEF_IMGLIB_FN (struct jpeg_error_mgr
*, jpeg_std_error
, (struct jpeg_error_mgr
*));
6054 DEF_IMGLIB_FN (boolean
, jpeg_resync_to_restart
, (j_decompress_ptr
, int));
6057 init_jpeg_functions (Lisp_Object libraries
)
6061 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6064 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6065 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6066 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6067 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6068 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6069 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6070 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6071 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6075 /* Wrapper since we can't directly assign the function pointer
6076 to another function pointer that was declared more completely easily. */
6078 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6080 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6085 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6086 #define fn_jpeg_start_decompress jpeg_start_decompress
6087 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6088 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6089 #define fn_jpeg_read_header jpeg_read_header
6090 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6091 #define fn_jpeg_std_error jpeg_std_error
6092 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6094 #endif /* HAVE_NTGUI */
6096 struct my_jpeg_error_mgr
6098 struct jpeg_error_mgr pub
;
6099 jmp_buf setjmp_buffer
;
6103 static void my_error_exit (j_common_ptr
) NO_RETURN
;
6105 my_error_exit (j_common_ptr cinfo
)
6107 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6108 longjmp (mgr
->setjmp_buffer
, 1);
6112 /* Init source method for JPEG data source manager. Called by
6113 jpeg_read_header() before any data is actually read. See
6114 libjpeg.doc from the JPEG lib distribution. */
6117 our_common_init_source (j_decompress_ptr cinfo
)
6122 /* Method to terminate data source. Called by
6123 jpeg_finish_decompress() after all data has been processed. */
6126 our_common_term_source (j_decompress_ptr cinfo
)
6131 /* Fill input buffer method for JPEG data source manager. Called
6132 whenever more data is needed. We read the whole image in one step,
6133 so this only adds a fake end of input marker at the end. */
6135 static JOCTET our_memory_buffer
[2];
6138 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6140 /* Insert a fake EOI marker. */
6141 struct jpeg_source_mgr
*src
= cinfo
->src
;
6143 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6144 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6146 src
->next_input_byte
= our_memory_buffer
;
6147 src
->bytes_in_buffer
= 2;
6152 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6153 is the JPEG data source manager. */
6156 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6158 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6162 if (num_bytes
> src
->bytes_in_buffer
)
6163 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6165 src
->bytes_in_buffer
-= num_bytes
;
6166 src
->next_input_byte
+= num_bytes
;
6171 /* Set up the JPEG lib for reading an image from DATA which contains
6172 LEN bytes. CINFO is the decompression info structure created for
6173 reading the image. */
6176 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6178 struct jpeg_source_mgr
*src
;
6180 if (cinfo
->src
== NULL
)
6182 /* First time for this JPEG object? */
6183 cinfo
->src
= (struct jpeg_source_mgr
*)
6184 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6185 sizeof (struct jpeg_source_mgr
));
6186 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6187 src
->next_input_byte
= data
;
6190 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6191 src
->init_source
= our_common_init_source
;
6192 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6193 src
->skip_input_data
= our_memory_skip_input_data
;
6194 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6195 src
->term_source
= our_common_term_source
;
6196 src
->bytes_in_buffer
= len
;
6197 src
->next_input_byte
= data
;
6201 struct jpeg_stdio_mgr
6203 struct jpeg_source_mgr mgr
;
6210 /* Size of buffer to read JPEG from file.
6211 Not too big, as we want to use alloc_small. */
6212 #define JPEG_STDIO_BUFFER_SIZE 8192
6215 /* Fill input buffer method for JPEG data source manager. Called
6216 whenever more data is needed. The data is read from a FILE *. */
6219 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6221 struct jpeg_stdio_mgr
*src
;
6223 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6228 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6230 src
->mgr
.bytes_in_buffer
= bytes
;
6233 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6235 src
->buffer
[0] = (JOCTET
) 0xFF;
6236 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6237 src
->mgr
.bytes_in_buffer
= 2;
6239 src
->mgr
.next_input_byte
= src
->buffer
;
6246 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6247 is the JPEG data source manager. */
6250 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6252 struct jpeg_stdio_mgr
*src
;
6253 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6255 while (num_bytes
> 0 && !src
->finished
)
6257 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6259 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6260 src
->mgr
.next_input_byte
+= num_bytes
;
6265 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6266 src
->mgr
.bytes_in_buffer
= 0;
6267 src
->mgr
.next_input_byte
= NULL
;
6269 our_stdio_fill_input_buffer (cinfo
);
6275 /* Set up the JPEG lib for reading an image from a FILE *.
6276 CINFO is the decompression info structure created for
6277 reading the image. */
6280 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6282 struct jpeg_stdio_mgr
*src
;
6284 if (cinfo
->src
!= NULL
)
6285 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6288 /* First time for this JPEG object? */
6289 cinfo
->src
= (struct jpeg_source_mgr
*)
6290 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6291 sizeof (struct jpeg_stdio_mgr
));
6292 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6293 src
->buffer
= (JOCTET
*)
6294 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6295 JPEG_STDIO_BUFFER_SIZE
);
6300 src
->mgr
.init_source
= our_common_init_source
;
6301 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6302 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6303 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6304 src
->mgr
.term_source
= our_common_term_source
;
6305 src
->mgr
.bytes_in_buffer
= 0;
6306 src
->mgr
.next_input_byte
= NULL
;
6310 /* Load image IMG for use on frame F. Patterned after example.c
6311 from the JPEG lib. */
6314 jpeg_load (struct frame
*f
, struct image
*img
)
6316 struct jpeg_decompress_struct cinfo
;
6317 struct my_jpeg_error_mgr mgr
;
6318 Lisp_Object file
, specified_file
;
6319 Lisp_Object specified_data
;
6320 FILE * volatile fp
= NULL
;
6322 int row_stride
, x
, y
;
6323 XImagePtr ximg
= NULL
;
6325 unsigned long *colors
;
6328 /* Open the JPEG file. */
6329 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6330 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6332 if (NILP (specified_data
))
6334 file
= x_find_image_file (specified_file
);
6335 if (!STRINGP (file
))
6337 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6341 fp
= fopen (SSDATA (file
), "rb");
6344 image_error ("Cannot open `%s'", file
, Qnil
);
6348 else if (!STRINGP (specified_data
))
6350 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6354 /* Customize libjpeg's error handling to call my_error_exit when an
6355 error is detected. This function will perform a longjmp. */
6356 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6357 mgr
.pub
.error_exit
= my_error_exit
;
6359 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6363 /* Called from my_error_exit. Display a JPEG error. */
6364 char buf
[JMSG_LENGTH_MAX
];
6365 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buf
);
6366 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6367 build_string (buf
));
6370 /* Close the input file and destroy the JPEG object. */
6372 fclose ((FILE *) fp
);
6373 fn_jpeg_destroy_decompress (&cinfo
);
6375 /* If we already have an XImage, free that. */
6376 x_destroy_x_image (ximg
);
6378 /* Free pixmap and colors. */
6379 x_clear_image (f
, img
);
6383 /* Create the JPEG decompression object. Let it read from fp.
6384 Read the JPEG image header. */
6385 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6387 if (NILP (specified_data
))
6388 jpeg_file_src (&cinfo
, (FILE *) fp
);
6390 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6391 SBYTES (specified_data
));
6393 fn_jpeg_read_header (&cinfo
, 1);
6395 /* Customize decompression so that color quantization will be used.
6396 Start decompression. */
6397 cinfo
.quantize_colors
= 1;
6398 fn_jpeg_start_decompress (&cinfo
);
6399 width
= img
->width
= cinfo
.output_width
;
6400 height
= img
->height
= cinfo
.output_height
;
6402 if (!check_image_size (f
, width
, height
))
6404 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6405 longjmp (mgr
.setjmp_buffer
, 2);
6408 /* Create X image and pixmap. */
6409 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6410 longjmp (mgr
.setjmp_buffer
, 2);
6412 /* Allocate colors. When color quantization is used,
6413 cinfo.actual_number_of_colors has been set with the number of
6414 colors generated, and cinfo.colormap is a two-dimensional array
6415 of color indices in the range 0..cinfo.actual_number_of_colors.
6416 No more than 255 colors will be generated. */
6420 if (cinfo
.out_color_components
> 2)
6421 ir
= 0, ig
= 1, ib
= 2;
6422 else if (cinfo
.out_color_components
> 1)
6423 ir
= 0, ig
= 1, ib
= 0;
6425 ir
= 0, ig
= 0, ib
= 0;
6427 /* Use the color table mechanism because it handles colors that
6428 cannot be allocated nicely. Such colors will be replaced with
6429 a default color, and we don't have to care about which colors
6430 can be freed safely, and which can't. */
6431 init_color_table ();
6432 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6435 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6437 /* Multiply RGB values with 255 because X expects RGB values
6438 in the range 0..0xffff. */
6439 int r
= cinfo
.colormap
[ir
][i
] << 8;
6440 int g
= cinfo
.colormap
[ig
][i
] << 8;
6441 int b
= cinfo
.colormap
[ib
][i
] << 8;
6442 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6445 #ifdef COLOR_TABLE_SUPPORT
6446 /* Remember those colors actually allocated. */
6447 img
->colors
= colors_in_color_table (&img
->ncolors
);
6448 free_color_table ();
6449 #endif /* COLOR_TABLE_SUPPORT */
6453 row_stride
= width
* cinfo
.output_components
;
6454 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6456 for (y
= 0; y
< height
; ++y
)
6458 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6459 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6460 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6464 fn_jpeg_finish_decompress (&cinfo
);
6465 fn_jpeg_destroy_decompress (&cinfo
);
6467 fclose ((FILE *) fp
);
6469 /* Maybe fill in the background field while we have ximg handy. */
6470 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6471 /* Casting avoids a GCC warning. */
6472 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6474 /* Put the image into the pixmap. */
6475 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6476 x_destroy_x_image (ximg
);
6480 #else /* HAVE_JPEG */
6484 jpeg_load (struct frame
*f
, struct image
*img
)
6486 return ns_load_image (f
, img
,
6487 image_spec_value (img
->spec
, QCfile
, NULL
),
6488 image_spec_value (img
->spec
, QCdata
, NULL
));
6490 #endif /* HAVE_NS */
6492 #endif /* !HAVE_JPEG */
6496 /***********************************************************************
6498 ***********************************************************************/
6500 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6502 static int tiff_image_p (Lisp_Object object
);
6503 static int tiff_load (struct frame
*f
, struct image
*img
);
6505 /* The symbol `tiff' identifying images of this type. */
6509 /* Indices of image specification fields in tiff_format, below. */
6511 enum tiff_keyword_index
6520 TIFF_HEURISTIC_MASK
,
6527 /* Vector of image_keyword structures describing the format
6528 of valid user-defined image specifications. */
6530 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6532 {":type", IMAGE_SYMBOL_VALUE
, 1},
6533 {":data", IMAGE_STRING_VALUE
, 0},
6534 {":file", IMAGE_STRING_VALUE
, 0},
6535 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6536 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6537 {":relief", IMAGE_INTEGER_VALUE
, 0},
6538 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6539 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6540 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6541 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6542 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6545 /* Structure describing the image type `tiff'. */
6547 static struct image_type tiff_type
=
6556 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6559 tiff_image_p (Lisp_Object object
)
6561 struct image_keyword fmt
[TIFF_LAST
];
6562 memcpy (fmt
, tiff_format
, sizeof fmt
);
6564 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6567 /* Must specify either the :data or :file keyword. */
6568 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6571 #endif /* HAVE_TIFF || HAVE_NS */
6579 /* TIFF library details. */
6580 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetErrorHandler
, (TIFFErrorHandler
));
6581 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetWarningHandler
, (TIFFErrorHandler
));
6582 DEF_IMGLIB_FN (TIFF
*, TIFFOpen
, (const char *, const char *));
6583 DEF_IMGLIB_FN (TIFF
*, TIFFClientOpen
, (const char *, const char *, thandle_t
,
6584 TIFFReadWriteProc
, TIFFReadWriteProc
,
6585 TIFFSeekProc
, TIFFCloseProc
, TIFFSizeProc
,
6586 TIFFMapFileProc
, TIFFUnmapFileProc
));
6587 DEF_IMGLIB_FN (int, TIFFGetField
, (TIFF
*, ttag_t
, ...));
6588 DEF_IMGLIB_FN (int, TIFFReadRGBAImage
, (TIFF
*, uint32
, uint32
, uint32
*, int));
6589 DEF_IMGLIB_FN (void, TIFFClose
, (TIFF
*));
6590 DEF_IMGLIB_FN (int, TIFFSetDirectory
, (TIFF
*, tdir_t
));
6593 init_tiff_functions (Lisp_Object libraries
)
6597 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6600 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6601 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6602 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6603 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6604 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6605 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6606 LOAD_IMGLIB_FN (library
, TIFFClose
);
6607 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6613 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6614 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6615 #define fn_TIFFOpen TIFFOpen
6616 #define fn_TIFFClientOpen TIFFClientOpen
6617 #define fn_TIFFGetField TIFFGetField
6618 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6619 #define fn_TIFFClose TIFFClose
6620 #define fn_TIFFSetDirectory TIFFSetDirectory
6621 #endif /* HAVE_NTGUI */
6624 /* Reading from a memory buffer for TIFF images Based on the PNG
6625 memory source, but we have to provide a lot of extra functions.
6628 We really only need to implement read and seek, but I am not
6629 convinced that the TIFF library is smart enough not to destroy
6630 itself if we only hand it the function pointers we need to
6635 unsigned char *bytes
;
6642 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6644 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6646 if (size
> src
->len
- src
->index
)
6648 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6654 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6660 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6662 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6667 case SEEK_SET
: /* Go from beginning of source. */
6671 case SEEK_END
: /* Go from end of source. */
6672 idx
= src
->len
+ off
;
6675 case SEEK_CUR
: /* Go from current position. */
6676 idx
= src
->index
+ off
;
6679 default: /* Invalid `whence'. */
6683 if (idx
> src
->len
|| idx
< 0)
6691 tiff_close_memory (thandle_t data
)
6698 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6700 /* It is already _IN_ memory. */
6705 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6707 /* We don't need to do this. */
6711 tiff_size_of_memory (thandle_t data
)
6713 return ((tiff_memory_source
*) data
)->len
;
6717 static void tiff_error_handler (const char *, const char *, va_list)
6718 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6720 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6725 len
= sprintf (buf
, "TIFF error: %s ", title
);
6726 vsprintf (buf
+ len
, format
, ap
);
6727 add_to_log (buf
, Qnil
, Qnil
);
6731 static void tiff_warning_handler (const char *, const char *, va_list)
6732 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6734 tiff_warning_handler (const char *title
, const char *format
, va_list ap
)
6739 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6740 vsprintf (buf
+ len
, format
, ap
);
6741 add_to_log (buf
, Qnil
, Qnil
);
6745 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6749 tiff_load (struct frame
*f
, struct image
*img
)
6751 Lisp_Object file
, specified_file
;
6752 Lisp_Object specified_data
;
6754 int width
, height
, x
, y
, count
;
6758 tiff_memory_source memsrc
;
6761 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6762 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6764 fn_TIFFSetErrorHandler ((TIFFErrorHandler
) tiff_error_handler
);
6765 fn_TIFFSetWarningHandler ((TIFFErrorHandler
) tiff_warning_handler
);
6767 if (NILP (specified_data
))
6769 /* Read from a file */
6770 file
= x_find_image_file (specified_file
);
6771 if (!STRINGP (file
))
6773 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6777 /* Try to open the image file. */
6778 tiff
= fn_TIFFOpen (SSDATA (file
), "r");
6781 image_error ("Cannot open `%s'", file
, Qnil
);
6787 if (!STRINGP (specified_data
))
6789 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6793 /* Memory source! */
6794 memsrc
.bytes
= SDATA (specified_data
);
6795 memsrc
.len
= SBYTES (specified_data
);
6798 tiff
= fn_TIFFClientOpen ("memory_source", "r", (thandle_t
)&memsrc
,
6799 (TIFFReadWriteProc
) tiff_read_from_memory
,
6800 (TIFFReadWriteProc
) tiff_write_from_memory
,
6801 tiff_seek_in_memory
,
6803 tiff_size_of_memory
,
6809 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6814 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6815 if (INTEGERP (image
))
6817 int ino
= XFASTINT (image
);
6818 if (!fn_TIFFSetDirectory (tiff
, ino
))
6820 image_error ("Invalid image number `%s' in image `%s'",
6822 fn_TIFFClose (tiff
);
6827 /* Get width and height of the image, and allocate a raster buffer
6828 of width x height 32-bit values. */
6829 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6830 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6832 if (!check_image_size (f
, width
, height
))
6834 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6835 fn_TIFFClose (tiff
);
6839 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6841 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6843 /* Count the number of images in the file. */
6844 for (count
= 1; fn_TIFFSetDirectory (tiff
, count
); count
++)
6848 img
->data
.lisp_val
= Fcons (Qcount
,
6849 Fcons (make_number (count
),
6850 img
->data
.lisp_val
));
6852 fn_TIFFClose (tiff
);
6855 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6860 /* Create the X image and pixmap. */
6861 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6867 /* Initialize the color table. */
6868 init_color_table ();
6870 /* Process the pixel raster. Origin is in the lower-left corner. */
6871 for (y
= 0; y
< height
; ++y
)
6873 uint32
*row
= buf
+ y
* width
;
6875 for (x
= 0; x
< width
; ++x
)
6877 uint32 abgr
= row
[x
];
6878 int r
= TIFFGetR (abgr
) << 8;
6879 int g
= TIFFGetG (abgr
) << 8;
6880 int b
= TIFFGetB (abgr
) << 8;
6881 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6885 #ifdef COLOR_TABLE_SUPPORT
6886 /* Remember the colors allocated for the image. Free the color table. */
6887 img
->colors
= colors_in_color_table (&img
->ncolors
);
6888 free_color_table ();
6889 #endif /* COLOR_TABLE_SUPPORT */
6892 img
->height
= height
;
6894 /* Maybe fill in the background field while we have ximg handy. */
6895 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6896 /* Casting avoids a GCC warning on W32. */
6897 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6899 /* Put the image into the pixmap, then free the X image and its buffer. */
6900 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6901 x_destroy_x_image (ximg
);
6907 #else /* HAVE_TIFF */
6911 tiff_load (struct frame
*f
, struct image
*img
)
6913 return ns_load_image (f
, img
,
6914 image_spec_value (img
->spec
, QCfile
, NULL
),
6915 image_spec_value (img
->spec
, QCdata
, NULL
));
6917 #endif /* HAVE_NS */
6919 #endif /* !HAVE_TIFF */
6923 /***********************************************************************
6925 ***********************************************************************/
6927 #if defined (HAVE_GIF) || defined (HAVE_NS)
6929 static int gif_image_p (Lisp_Object object
);
6930 static int gif_load (struct frame
*f
, struct image
*img
);
6931 static void gif_clear_image (struct frame
*f
, struct image
*img
);
6933 /* The symbol `gif' identifying images of this type. */
6937 /* Indices of image specification fields in gif_format, below. */
6939 enum gif_keyword_index
6955 /* Vector of image_keyword structures describing the format
6956 of valid user-defined image specifications. */
6958 static const struct image_keyword gif_format
[GIF_LAST
] =
6960 {":type", IMAGE_SYMBOL_VALUE
, 1},
6961 {":data", IMAGE_STRING_VALUE
, 0},
6962 {":file", IMAGE_STRING_VALUE
, 0},
6963 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6964 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6965 {":relief", IMAGE_INTEGER_VALUE
, 0},
6966 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6967 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6968 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6969 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6970 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6973 /* Structure describing the image type `gif'. */
6975 static struct image_type gif_type
=
6984 /* Free X resources of GIF image IMG which is used on frame F. */
6987 gif_clear_image (struct frame
*f
, struct image
*img
)
6989 /* IMG->data.ptr_val may contain metadata with extension data. */
6990 img
->data
.lisp_val
= Qnil
;
6991 x_clear_image (f
, img
);
6994 /* Return non-zero if OBJECT is a valid GIF image specification. */
6997 gif_image_p (Lisp_Object object
)
6999 struct image_keyword fmt
[GIF_LAST
];
7000 memcpy (fmt
, gif_format
, sizeof fmt
);
7002 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7005 /* Must specify either the :data or :file keyword. */
7006 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7009 #endif /* HAVE_GIF */
7013 #if defined (HAVE_NTGUI)
7014 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7015 Undefine before redefining to avoid a preprocessor warning. */
7019 /* avoid conflict with QuickdrawText.h */
7020 #define DrawText gif_DrawText
7021 #include <gif_lib.h>
7024 #else /* HAVE_NTGUI */
7026 #include <gif_lib.h>
7028 #endif /* HAVE_NTGUI */
7033 /* GIF library details. */
7034 DEF_IMGLIB_FN (int, DGifCloseFile
, (GifFileType
*));
7035 DEF_IMGLIB_FN (int, DGifSlurp
, (GifFileType
*));
7036 DEF_IMGLIB_FN (GifFileType
*, DGifOpen
, (void *, InputFunc
));
7037 DEF_IMGLIB_FN (GifFileType
*, DGifOpenFileName
, (const char *));
7040 init_gif_functions (Lisp_Object libraries
)
7044 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7047 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7048 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7049 LOAD_IMGLIB_FN (library
, DGifOpen
);
7050 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7056 #define fn_DGifCloseFile DGifCloseFile
7057 #define fn_DGifSlurp DGifSlurp
7058 #define fn_DGifOpen DGifOpen
7059 #define fn_DGifOpenFileName DGifOpenFileName
7061 #endif /* HAVE_NTGUI */
7063 /* Reading a GIF image from memory
7064 Based on the PNG memory stuff to a certain extent. */
7068 unsigned char *bytes
;
7074 /* Make the current memory source available to gif_read_from_memory.
7075 It's done this way because not all versions of libungif support
7076 a UserData field in the GifFileType structure. */
7077 static gif_memory_source
*current_gif_memory_src
;
7080 gif_read_from_memory (GifFileType
*file
, GifByteType
*buf
, int len
)
7082 gif_memory_source
*src
= current_gif_memory_src
;
7084 if (len
> src
->len
- src
->index
)
7087 memcpy (buf
, src
->bytes
+ src
->index
, len
);
7093 /* Load GIF image IMG for use on frame F. Value is non-zero if
7096 static const int interlace_start
[] = {0, 4, 2, 1};
7097 static const int interlace_increment
[] = {8, 8, 4, 2};
7099 #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249
7102 gif_load (struct frame
*f
, struct image
*img
)
7104 Lisp_Object file
, specified_file
;
7105 Lisp_Object specified_data
;
7106 int rc
, width
, height
, x
, y
, i
;
7107 boolean transparent_p
= 0;
7109 ColorMapObject
*gif_color_map
;
7110 unsigned long pixel_colors
[256];
7113 int ino
, image_height
, image_width
;
7114 gif_memory_source memsrc
;
7115 unsigned char *raster
;
7116 unsigned int transparency_color_index
IF_LINT (= 0);
7118 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7119 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7121 if (NILP (specified_data
))
7123 file
= x_find_image_file (specified_file
);
7124 if (!STRINGP (file
))
7126 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7130 /* Open the GIF file. */
7131 gif
= fn_DGifOpenFileName (SSDATA (file
));
7134 image_error ("Cannot open `%s'", file
, Qnil
);
7140 if (!STRINGP (specified_data
))
7142 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
7146 /* Read from memory! */
7147 current_gif_memory_src
= &memsrc
;
7148 memsrc
.bytes
= SDATA (specified_data
);
7149 memsrc
.len
= SBYTES (specified_data
);
7152 gif
= fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7155 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7160 /* Before reading entire contents, check the declared image size. */
7161 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7163 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7164 fn_DGifCloseFile (gif
);
7168 /* Read entire contents. */
7169 rc
= fn_DGifSlurp (gif
);
7170 if (rc
== GIF_ERROR
)
7172 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7173 fn_DGifCloseFile (gif
);
7177 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7178 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7179 if (ino
>= gif
->ImageCount
)
7181 image_error ("Invalid image number `%s' in image `%s'",
7183 fn_DGifCloseFile (gif
);
7187 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++)
7188 if ((gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Function
7189 == GIF_LOCAL_DESCRIPTOR_EXTENSION
)
7190 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].ByteCount
== 4
7191 /* Transparency enabled? */
7192 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[0] & 1)
7195 transparency_color_index
7196 = (unsigned char) gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[3];
7199 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7200 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7201 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7202 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7203 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7204 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7206 width
= img
->width
= max (gif
->SWidth
,
7207 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7208 img
->corners
[RIGHT_CORNER
]));
7209 height
= img
->height
= max (gif
->SHeight
,
7210 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7211 img
->corners
[BOT_CORNER
]));
7213 if (!check_image_size (f
, width
, height
))
7215 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7216 fn_DGifCloseFile (gif
);
7220 /* Create the X image and pixmap. */
7221 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7223 fn_DGifCloseFile (gif
);
7227 /* Allocate colors. */
7228 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7230 gif_color_map
= gif
->SColorMap
;
7231 init_color_table ();
7232 memset (pixel_colors
, 0, sizeof pixel_colors
);
7235 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7237 if (transparent_p
&& transparency_color_index
== i
)
7239 Lisp_Object specified_bg
7240 = image_spec_value (img
->spec
, QCbackground
, NULL
);
7241 pixel_colors
[i
] = STRINGP (specified_bg
)
7242 ? x_alloc_image_color (f
, img
, specified_bg
,
7243 FRAME_BACKGROUND_PIXEL (f
))
7244 : FRAME_BACKGROUND_PIXEL (f
);
7248 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7249 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7250 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7251 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7255 #ifdef COLOR_TABLE_SUPPORT
7256 img
->colors
= colors_in_color_table (&img
->ncolors
);
7257 free_color_table ();
7258 #endif /* COLOR_TABLE_SUPPORT */
7260 /* Clear the part of the screen image that are not covered by
7261 the image from the GIF file. Full animated GIF support
7262 requires more than can be done here (see the gif89 spec,
7263 disposal methods). Let's simply assume that the part
7264 not covered by a sub-image is in the frame's background color. */
7265 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7266 for (x
= 0; x
< width
; ++x
)
7267 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7269 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7270 for (x
= 0; x
< width
; ++x
)
7271 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7273 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7275 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7276 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7277 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7278 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7281 /* Read the GIF image into the X image. We use a local variable
7282 `raster' here because RasterBits below is a char *, and invites
7283 problems with bytes >= 0x80. */
7284 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7286 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7289 int row
= interlace_start
[0];
7293 for (y
= 0; y
< image_height
; y
++)
7295 if (row
>= image_height
)
7297 row
= interlace_start
[++pass
];
7298 while (row
>= image_height
)
7299 row
= interlace_start
[++pass
];
7302 for (x
= 0; x
< image_width
; x
++)
7304 int c
= raster
[(y
* image_width
) + x
];
7305 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7306 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7309 row
+= interlace_increment
[pass
];
7314 for (y
= 0; y
< image_height
; ++y
)
7315 for (x
= 0; x
< image_width
; ++x
)
7317 int c
= raster
[y
* image_width
+ x
];
7318 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7319 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7323 /* Save GIF image extension data for `image-metadata'.
7324 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7325 img
->data
.lisp_val
= Qnil
;
7326 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7328 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7329 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7330 /* Append (... FUNCTION "BYTES") */
7331 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7332 Fcons (make_number (ext
->Function
),
7333 img
->data
.lisp_val
));
7334 img
->data
.lisp_val
= Fcons (Qextension_data
,
7335 Fcons (Fnreverse (img
->data
.lisp_val
),
7338 if (gif
->ImageCount
> 1)
7339 img
->data
.lisp_val
= Fcons (Qcount
,
7340 Fcons (make_number (gif
->ImageCount
),
7341 img
->data
.lisp_val
));
7343 fn_DGifCloseFile (gif
);
7345 /* Maybe fill in the background field while we have ximg handy. */
7346 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7347 /* Casting avoids a GCC warning. */
7348 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7350 /* Put the image into the pixmap, then free the X image and its buffer. */
7351 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7352 x_destroy_x_image (ximg
);
7357 #else /* !HAVE_GIF */
7361 gif_load (struct frame
*f
, struct image
*img
)
7363 return ns_load_image (f
, img
,
7364 image_spec_value (img
->spec
, QCfile
, NULL
),
7365 image_spec_value (img
->spec
, QCdata
, NULL
));
7367 #endif /* HAVE_NS */
7369 #endif /* HAVE_GIF */
7372 /***********************************************************************
7374 ***********************************************************************/
7375 #if defined (HAVE_IMAGEMAGICK)
7377 /* The symbol `imagemagick' identifying images of this type. */
7379 Lisp_Object Qimagemagick
;
7380 /* Indices of image specification fields in imagemagick_format, below. */
7382 enum imagemagick_keyword_index
7390 IMAGEMAGICK_ALGORITHM
,
7391 IMAGEMAGICK_HEURISTIC_MASK
,
7393 IMAGEMAGICK_BACKGROUND
,
7396 IMAGEMAGICK_ROTATION
,
7401 /* Vector of image_keyword structures describing the format
7402 of valid user-defined image specifications. */
7404 static struct image_keyword imagemagick_format
[IMAGEMAGICK_LAST
] =
7406 {":type", IMAGE_SYMBOL_VALUE
, 1},
7407 {":data", IMAGE_STRING_VALUE
, 0},
7408 {":file", IMAGE_STRING_VALUE
, 0},
7409 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7410 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7411 {":relief", IMAGE_INTEGER_VALUE
, 0},
7412 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7413 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7414 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7415 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
7416 {":height", IMAGE_INTEGER_VALUE
, 0},
7417 {":width", IMAGE_INTEGER_VALUE
, 0},
7418 {":rotation", IMAGE_NUMBER_VALUE
, 0},
7419 {":crop", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
7421 /* Free X resources of imagemagick image IMG which is used on frame F. */
7424 imagemagick_clear_image (struct frame
*f
,
7427 x_clear_image (f
, img
);
7432 /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do
7433 this by calling parse_image_spec and supplying the keywords that
7434 identify the IMAGEMAGICK format. */
7437 imagemagick_image_p (Lisp_Object object
)
7439 struct image_keyword fmt
[IMAGEMAGICK_LAST
];
7440 memcpy (fmt
, imagemagick_format
, sizeof fmt
);
7442 if (!parse_image_spec (object
, fmt
, IMAGEMAGICK_LAST
, Qimagemagick
))
7445 /* Must specify either the :data or :file keyword. */
7446 return fmt
[IMAGEMAGICK_FILE
].count
+ fmt
[IMAGEMAGICK_DATA
].count
== 1;
7449 /* The GIF library also defines DrawRectangle, but its never used in Emacs.
7450 Therefore rename the function so it doesnt collide with ImageMagick. */
7451 #define DrawRectangle DrawRectangleGif
7452 #include <wand/MagickWand.h>
7454 /* imagemagick_load_image is a helper function for imagemagick_load,
7455 which does the actual loading given contents and size, apart from
7456 frame and image structures, passed from imagemagick_load.
7458 Uses librimagemagick to do most of the image processing.
7460 non-zero when successful.
7464 imagemagick_load_image (/* Pointer to emacs frame structure. */
7466 /* Pointer to emacs image structure. */
7468 /* String containing the IMAGEMAGICK data to
7470 unsigned char *contents
,
7471 /* Size of data in bytes. */
7473 /* Filename, either pass filename or
7475 unsigned char *filename
)
7477 unsigned long width
;
7478 unsigned long height
;
7484 Lisp_Object specified_bg
;
7489 MagickWand
*image_wand
;
7490 MagickWand
*ping_wand
;
7491 PixelIterator
*iterator
;
7493 MagickPixelPacket pixel
;
7496 Lisp_Object crop
, geometry
;
7498 int desired_width
, desired_height
;
7500 int imagemagick_rendermethod
;
7502 ImageInfo
*image_info
;
7503 ExceptionInfo
*exception
;
7507 /* Handle image index for image types who can contain more than one
7508 image. Interface :index is same as for GIF. First we "ping" the
7509 image to see how many sub-images it contains. Pinging is faster
7510 than loading the image to find out things about it. */
7512 /* `MagickWandGenesis' initializes the imagemagick environment. */
7513 MagickWandGenesis ();
7514 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7515 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7516 ping_wand
= NewMagickWand ();
7517 MagickSetResolution (ping_wand
, 2, 2);
7518 if (filename
!= NULL
)
7520 status
= MagickPingImage (ping_wand
, filename
);
7524 status
= MagickPingImageBlob (ping_wand
, contents
, size
);
7527 if (ino
>= MagickGetNumberImages (ping_wand
))
7529 image_error ("Invalid image number `%s' in image `%s'",
7531 DestroyMagickWand (ping_wand
);
7535 if (MagickGetNumberImages(ping_wand
) > 1)
7536 img
->data
.lisp_val
=
7538 Fcons (make_number (MagickGetNumberImages (ping_wand
)),
7539 img
->data
.lisp_val
));
7541 DestroyMagickWand (ping_wand
);
7543 /* Now, after pinging, we know how many images are inside the
7544 file. If its not a bundle, just one. */
7546 if (filename
!= NULL
)
7548 image_info
= CloneImageInfo ((ImageInfo
*) NULL
);
7549 (void) strcpy (image_info
->filename
, filename
);
7550 image_info
->number_scenes
= 1;
7551 image_info
->scene
= ino
;
7552 exception
= AcquireExceptionInfo ();
7554 im_image
= ReadImage (image_info
, exception
);
7555 DestroyExceptionInfo (exception
);
7557 if (im_image
!= NULL
)
7559 image_wand
= NewMagickWandFromImage (im_image
);
7560 DestroyImage(im_image
);
7561 status
= MagickTrue
;
7564 status
= MagickFalse
;
7568 image_wand
= NewMagickWand ();
7569 status
= MagickReadImageBlob (image_wand
, contents
, size
);
7572 if (status
== MagickFalse
) goto imagemagick_error
;
7574 /* If width and/or height is set in the display spec assume we want
7575 to scale to those values. if either h or w is unspecified, the
7576 unspecified should be calculated from the specified to preserve
7579 value
= image_spec_value (img
->spec
, QCwidth
, NULL
);
7580 desired_width
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7581 value
= image_spec_value (img
->spec
, QCheight
, NULL
);
7582 desired_height
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7584 height
= MagickGetImageHeight (image_wand
);
7585 width
= MagickGetImageWidth (image_wand
);
7587 if(desired_width
!= -1 && desired_height
== -1)
7589 /* w known, calculate h. */
7590 desired_height
= (double) desired_width
/ width
* height
;
7592 if(desired_width
== -1 && desired_height
!= -1)
7594 /* h known, calculate w. */
7595 desired_width
= (double) desired_height
/ height
* width
;
7597 if(desired_width
!= -1 && desired_height
!= -1)
7599 status
= MagickScaleImage (image_wand
, desired_width
, desired_height
);
7600 if (status
== MagickFalse
)
7602 image_error ("Imagemagick scale failed", Qnil
, Qnil
);
7603 goto imagemagick_error
;
7608 /* crop behaves similar to image slicing in Emacs but is more memory
7610 crop
= image_spec_value (img
->spec
, QCcrop
, NULL
);
7612 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7614 /* After some testing, it seems MagickCropImage is the fastest
7615 crop function in ImageMagick. This crop function seems to do
7616 less copying than the alternatives, but it still reads the
7617 entire image into memory before croping, which is aparently
7618 difficult to avoid when using imagemagick. */
7621 w
= XFASTINT (XCAR (crop
));
7623 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7625 h
= XFASTINT (XCAR (crop
));
7627 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7629 x
= XFASTINT (XCAR (crop
));
7631 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7633 y
= XFASTINT (XCAR (crop
));
7634 MagickCropImage (image_wand
, w
, h
, x
, y
);
7640 /* Furthermore :rotation. we need background color and angle for
7643 TODO background handling for rotation specified_bg =
7644 image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP
7646 value
= image_spec_value (img
->spec
, QCrotation
, NULL
);
7649 PixelWand
* background
= NewPixelWand ();
7650 PixelSetColor (background
, "#ffffff");/*TODO remove hardcode*/
7652 rotation
= extract_float (value
);
7654 status
= MagickRotateImage (image_wand
, background
, rotation
);
7655 DestroyPixelWand (background
);
7656 if (status
== MagickFalse
)
7658 image_error ("Imagemagick image rotate failed", Qnil
, Qnil
);
7659 goto imagemagick_error
;
7663 /* Finaly we are done manipulating the image, figure out resulting
7664 width, height, and then transfer ownerwship to Emacs. */
7665 height
= MagickGetImageHeight (image_wand
);
7666 width
= MagickGetImageWidth (image_wand
);
7668 if (! check_image_size (f
, width
, height
))
7670 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7671 goto imagemagick_error
;
7674 /* We can now get a valid pixel buffer from the imagemagick file, if all
7677 init_color_table ();
7678 imagemagick_rendermethod
= (INTEGERP (Vimagemagick_render_type
)
7679 ? XFASTINT (Vimagemagick_render_type
) : 0);
7680 if (imagemagick_rendermethod
== 0)
7682 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7683 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
7684 &ximg
, &img
->pixmap
))
7686 #ifdef COLOR_TABLE_SUPPORT
7687 free_color_table ();
7689 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7690 goto imagemagick_error
;
7693 /* Copy imagegmagick image to x with primitive yet robust pixel
7694 pusher loop. This has been tested a lot with many different
7697 /* Copy pixels from the imagemagick image structure to the x image map. */
7698 iterator
= NewPixelIterator (image_wand
);
7699 if (iterator
== (PixelIterator
*) NULL
)
7701 #ifdef COLOR_TABLE_SUPPORT
7702 free_color_table ();
7704 x_destroy_x_image (ximg
);
7705 image_error ("Imagemagick pixel iterator creation failed",
7707 goto imagemagick_error
;
7710 for (y
= 0; y
< (long) MagickGetImageHeight (image_wand
); y
++)
7712 pixels
= PixelGetNextIteratorRow (iterator
, &width
);
7713 if (pixels
== (PixelWand
**) NULL
)
7715 for (x
= 0; x
< (long) width
; x
++)
7717 PixelGetMagickColor (pixels
[x
], &pixel
);
7718 XPutPixel (ximg
, x
, y
,
7719 lookup_rgb_color (f
,
7725 DestroyPixelIterator (iterator
);
7728 if (imagemagick_rendermethod
== 1)
7730 /* Magicexportimage is normaly faster than pixelpushing. This
7731 method is also well tested. Some aspects of this method are
7732 ad-hoc and needs to be more researched. */
7733 int imagedepth
= 24;/*MagickGetImageDepth(image_wand);*/
7734 char* exportdepth
= imagedepth
<= 8 ? "I" : "BGRP";/*"RGBP";*/
7735 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7736 if (!x_create_x_image_and_pixmap (f
, width
, height
, imagedepth
,
7737 &ximg
, &img
->pixmap
))
7739 #ifdef COLOR_TABLE_SUPPORT
7740 free_color_table ();
7742 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7743 goto imagemagick_error
;
7747 /* Oddly, the below code doesnt seem to work:*/
7748 /* switch(ximg->bitmap_unit){ */
7750 /* pixelwidth=CharPixel; */
7753 /* pixelwidth=ShortPixel; */
7756 /* pixelwidth=LongPixel; */
7760 Here im just guessing the format of the bitmap.
7761 happens to work fine for:
7764 seems about 3 times as fast as pixel pushing(not carefully measured)
7766 pixelwidth
= CharPixel
;/*??? TODO figure out*/
7767 #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS
7768 MagickExportImagePixels (image_wand
,
7773 /*&(img->pixmap));*/
7776 image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!",
7782 #ifdef COLOR_TABLE_SUPPORT
7783 /* Remember colors allocated for this image. */
7784 img
->colors
= colors_in_color_table (&img
->ncolors
);
7785 free_color_table ();
7786 #endif /* COLOR_TABLE_SUPPORT */
7790 img
->height
= height
;
7792 /* Put the image into the pixmap, then free the X image and its
7794 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7795 x_destroy_x_image (ximg
);
7798 /* Final cleanup. image_wand should be the only resource left. */
7799 DestroyMagickWand (image_wand
);
7800 /* `MagickWandTerminus' terminates the imagemagick environment. */
7801 MagickWandTerminus ();
7806 DestroyMagickWand (image_wand
);
7807 MagickWandTerminus ();
7808 /* TODO more cleanup. */
7809 image_error ("Error parsing IMAGEMAGICK image `%s'", img
->spec
, Qnil
);
7814 /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if
7815 successful. this function will go into the imagemagick_type structure, and
7816 the prototype thus needs to be compatible with that structure. */
7819 imagemagick_load (struct frame
*f
,
7823 Lisp_Object file_name
;
7825 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7826 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7827 if (STRINGP (file_name
))
7831 file
= x_find_image_file (file_name
);
7832 if (!STRINGP (file
))
7834 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7837 success_p
= imagemagick_load_image (f
, img
, 0, 0, SDATA (file
));
7839 /* Else its not a file, its a lisp object. Load the image from a
7840 lisp object rather than a file. */
7845 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7846 if (!STRINGP (data
))
7848 image_error ("Invalid image data `%s'", data
, Qnil
);
7851 success_p
= imagemagick_load_image (f
, img
, SDATA (data
),
7852 SBYTES (data
), NULL
);
7858 /* Structure describing the image type `imagemagick'. Its the same
7859 type of structure defined for all image formats, handled by Emacs
7860 image functions. See struct image_type in dispextern.h. */
7862 static struct image_type imagemagick_type
=
7864 /* An identifier showing that this is an image structure for the
7865 IMAGEMAGICK format. */
7867 /* Handle to a function that can be used to identify a IMAGEMAGICK
7869 imagemagick_image_p
,
7870 /* Handle to function used to load a IMAGEMAGICK file. */
7872 /* Handle to function to free resources for IMAGEMAGICK. */
7873 imagemagick_clear_image
,
7874 /* An internal field to link to the next image type in a list of
7875 image types, will be filled in when registering the format. */
7882 DEFUN ("imagemagick-types", Fimagemagick_types
, Simagemagick_types
, 0, 0, 0,
7883 doc
: /* Return image file types supported by ImageMagick.
7884 Since ImageMagick recognizes a lot of file-types that clash with Emacs,
7885 such as .c, we want to be able to alter the list at the lisp level. */)
7888 Lisp_Object typelist
= Qnil
;
7891 char **imtypes
= GetMagickList ("*", &numf
, &ex
);
7893 Lisp_Object Qimagemagicktype
;
7894 for (i
= 0; i
< numf
; i
++)
7896 Qimagemagicktype
= intern (imtypes
[i
]);
7897 typelist
= Fcons (Qimagemagicktype
, typelist
);
7902 #endif /* defined (HAVE_IMAGEMAGICK) */
7906 /***********************************************************************
7908 ***********************************************************************/
7910 #if defined (HAVE_RSVG)
7912 /* Function prototypes. */
7914 static int svg_image_p (Lisp_Object object
);
7915 static int svg_load (struct frame
*f
, struct image
*img
);
7917 static int svg_load_image (struct frame
*, struct image
*,
7918 unsigned char *, unsigned int);
7920 /* The symbol `svg' identifying images of this type. */
7924 /* Indices of image specification fields in svg_format, below. */
7926 enum svg_keyword_index
7941 /* Vector of image_keyword structures describing the format
7942 of valid user-defined image specifications. */
7944 static const struct image_keyword svg_format
[SVG_LAST
] =
7946 {":type", IMAGE_SYMBOL_VALUE
, 1},
7947 {":data", IMAGE_STRING_VALUE
, 0},
7948 {":file", IMAGE_STRING_VALUE
, 0},
7949 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7950 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7951 {":relief", IMAGE_INTEGER_VALUE
, 0},
7952 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7953 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7954 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7955 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7958 /* Structure describing the image type `svg'. Its the same type of
7959 structure defined for all image formats, handled by emacs image
7960 functions. See struct image_type in dispextern.h. */
7962 static struct image_type svg_type
=
7964 /* An identifier showing that this is an image structure for the SVG format. */
7966 /* Handle to a function that can be used to identify a SVG file. */
7968 /* Handle to function used to load a SVG file. */
7970 /* Handle to function to free sresources for SVG. */
7972 /* An internal field to link to the next image type in a list of
7973 image types, will be filled in when registering the format. */
7978 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7979 this by calling parse_image_spec and supplying the keywords that
7980 identify the SVG format. */
7983 svg_image_p (Lisp_Object object
)
7985 struct image_keyword fmt
[SVG_LAST
];
7986 memcpy (fmt
, svg_format
, sizeof fmt
);
7988 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7991 /* Must specify either the :data or :file keyword. */
7992 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7995 #include <librsvg/rsvg.h>
7999 /* SVG library functions. */
8000 DEF_IMGLIB_FN (RsvgHandle
*, rsvg_handle_new
);
8001 DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions
);
8002 DEF_IMGLIB_FN (gboolean
, rsvg_handle_write
);
8003 DEF_IMGLIB_FN (gboolean
, rsvg_handle_close
);
8004 DEF_IMGLIB_FN (GdkPixbuf
*, rsvg_handle_get_pixbuf
);
8005 DEF_IMGLIB_FN (void, rsvg_handle_free
);
8007 DEF_IMGLIB_FN (int, gdk_pixbuf_get_width
);
8008 DEF_IMGLIB_FN (int, gdk_pixbuf_get_height
);
8009 DEF_IMGLIB_FN (guchar
*, gdk_pixbuf_get_pixels
);
8010 DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride
);
8011 DEF_IMGLIB_FN (GdkColorspace
, gdk_pixbuf_get_colorspace
);
8012 DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels
);
8013 DEF_IMGLIB_FN (gboolean
, gdk_pixbuf_get_has_alpha
);
8014 DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample
);
8016 DEF_IMGLIB_FN (void, g_type_init
);
8017 DEF_IMGLIB_FN (void, g_object_unref
);
8018 DEF_IMGLIB_FN (void, g_error_free
);
8020 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
8023 init_svg_functions (Lisp_Object libraries
)
8025 HMODULE library
, gdklib
, glib
, gobject
;
8027 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
8028 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
8029 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
8030 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
8033 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
8034 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
8035 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
8036 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
8037 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
8038 LOAD_IMGLIB_FN (library
, rsvg_handle_free
);
8040 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
8041 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
8042 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
8043 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
8044 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
8045 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
8046 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
8047 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
8049 LOAD_IMGLIB_FN (gobject
, g_type_init
);
8050 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
8051 LOAD_IMGLIB_FN (glib
, g_error_free
);
8057 /* The following aliases for library functions allow dynamic loading
8058 to be used on some platforms. */
8059 #define fn_rsvg_handle_new rsvg_handle_new
8060 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
8061 #define fn_rsvg_handle_write rsvg_handle_write
8062 #define fn_rsvg_handle_close rsvg_handle_close
8063 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
8064 #define fn_rsvg_handle_free rsvg_handle_free
8066 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
8067 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
8068 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
8069 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
8070 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
8071 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
8072 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
8073 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
8075 #define fn_g_type_init g_type_init
8076 #define fn_g_object_unref g_object_unref
8077 #define fn_g_error_free g_error_free
8078 #endif /* !HAVE_NTGUI */
8080 /* Load SVG image IMG for use on frame F. Value is non-zero if
8081 successful. this function will go into the svg_type structure, and
8082 the prototype thus needs to be compatible with that structure. */
8085 svg_load (struct frame
*f
, struct image
*img
)
8088 Lisp_Object file_name
;
8090 /* If IMG->spec specifies a file name, create a non-file spec from it. */
8091 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
8092 if (STRINGP (file_name
))
8095 unsigned char *contents
;
8098 file
= x_find_image_file (file_name
);
8099 if (!STRINGP (file
))
8101 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
8105 /* Read the entire file into memory. */
8106 contents
= slurp_file (SDATA (file
), &size
);
8107 if (contents
== NULL
)
8109 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
8112 /* If the file was slurped into memory properly, parse it. */
8113 success_p
= svg_load_image (f
, img
, contents
, size
);
8116 /* Else its not a file, its a lisp object. Load the image from a
8117 lisp object rather than a file. */
8122 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
8123 if (!STRINGP (data
))
8125 image_error ("Invalid image data `%s'", data
, Qnil
);
8128 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
8134 /* svg_load_image is a helper function for svg_load, which does the
8135 actual loading given contents and size, apart from frame and image
8136 structures, passed from svg_load.
8138 Uses librsvg to do most of the image processing.
8140 Returns non-zero when successful. */
8142 svg_load_image (struct frame
*f
, /* Pointer to emacs frame structure. */
8143 struct image
*img
, /* Pointer to emacs image structure. */
8144 unsigned char *contents
, /* String containing the SVG XML data to be parsed. */
8145 unsigned int size
) /* Size of data in bytes. */
8147 RsvgHandle
*rsvg_handle
;
8148 RsvgDimensionData dimension_data
;
8149 GError
*error
= NULL
;
8153 const guint8
*pixels
;
8156 Lisp_Object specified_bg
;
8161 /* g_type_init is a glib function that must be called prior to using
8162 gnome type library functions. */
8164 /* Make a handle to a new rsvg object. */
8165 rsvg_handle
= fn_rsvg_handle_new ();
8167 /* Parse the contents argument and fill in the rsvg_handle. */
8168 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &error
);
8169 if (error
) goto rsvg_error
;
8171 /* The parsing is complete, rsvg_handle is ready to used, close it
8172 for further writes. */
8173 fn_rsvg_handle_close (rsvg_handle
, &error
);
8174 if (error
) goto rsvg_error
;
8176 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
8177 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
8179 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8183 /* We can now get a valid pixel buffer from the svg file, if all
8185 pixbuf
= fn_rsvg_handle_get_pixbuf (rsvg_handle
);
8186 if (!pixbuf
) goto rsvg_error
;
8187 fn_g_object_unref (rsvg_handle
);
8189 /* Extract some meta data from the svg handle. */
8190 width
= fn_gdk_pixbuf_get_width (pixbuf
);
8191 height
= fn_gdk_pixbuf_get_height (pixbuf
);
8192 pixels
= fn_gdk_pixbuf_get_pixels (pixbuf
);
8193 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
8195 /* Validate the svg meta data. */
8196 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
8197 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
8198 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
8199 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
8201 /* Try to create a x pixmap to hold the svg pixmap. */
8202 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8204 fn_g_object_unref (pixbuf
);
8208 init_color_table ();
8210 /* Handle alpha channel by combining the image with a background
8212 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8213 if (!STRINGP (specified_bg
)
8214 || !x_defined_color (f
, SDATA (specified_bg
), &background
, 0))
8217 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8218 x_query_color (f
, &background
);
8220 ns_query_color (FRAME_BACKGROUND_COLOR (f
), &background
, 1);
8224 /* SVG pixmaps specify transparency in the last byte, so right
8225 shift 8 bits to get rid of it, since emacs doesn't support
8227 background
.red
>>= 8;
8228 background
.green
>>= 8;
8229 background
.blue
>>= 8;
8231 /* This loop handles opacity values, since Emacs assumes
8232 non-transparent images. Each pixel must be "flattened" by
8233 calculating the resulting color, given the transparency of the
8234 pixel, and the image background color. */
8235 for (y
= 0; y
< height
; ++y
)
8237 for (x
= 0; x
< width
; ++x
)
8247 opacity
= *pixels
++;
8249 red
= ((red
* opacity
)
8250 + (background
.red
* ((1 << 8) - opacity
)));
8251 green
= ((green
* opacity
)
8252 + (background
.green
* ((1 << 8) - opacity
)));
8253 blue
= ((blue
* opacity
)
8254 + (background
.blue
* ((1 << 8) - opacity
)));
8256 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
8259 pixels
+= rowstride
- 4 * width
;
8262 #ifdef COLOR_TABLE_SUPPORT
8263 /* Remember colors allocated for this image. */
8264 img
->colors
= colors_in_color_table (&img
->ncolors
);
8265 free_color_table ();
8266 #endif /* COLOR_TABLE_SUPPORT */
8268 fn_g_object_unref (pixbuf
);
8271 img
->height
= height
;
8273 /* Maybe fill in the background field while we have ximg handy.
8274 Casting avoids a GCC warning. */
8275 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
8277 /* Put the image into the pixmap, then free the X image and its
8279 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8280 x_destroy_x_image (ximg
);
8285 fn_g_object_unref (rsvg_handle
);
8286 /* FIXME: Use error->message so the user knows what is the actual
8287 problem with the image. */
8288 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
8289 fn_g_error_free (error
);
8293 #endif /* defined (HAVE_RSVG) */
8298 /***********************************************************************
8300 ***********************************************************************/
8302 #ifdef HAVE_X_WINDOWS
8303 #define HAVE_GHOSTSCRIPT 1
8304 #endif /* HAVE_X_WINDOWS */
8306 #ifdef HAVE_GHOSTSCRIPT
8308 static int gs_image_p (Lisp_Object object
);
8309 static int gs_load (struct frame
*f
, struct image
*img
);
8310 static void gs_clear_image (struct frame
*f
, struct image
*img
);
8312 /* Keyword symbols. */
8314 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8316 /* Indices of image specification fields in gs_format, below. */
8318 enum gs_keyword_index
8336 /* Vector of image_keyword structures describing the format
8337 of valid user-defined image specifications. */
8339 static const struct image_keyword gs_format
[GS_LAST
] =
8341 {":type", IMAGE_SYMBOL_VALUE
, 1},
8342 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8343 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8344 {":file", IMAGE_STRING_VALUE
, 1},
8345 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8346 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8347 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8348 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8349 {":relief", IMAGE_INTEGER_VALUE
, 0},
8350 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8351 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8352 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8353 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8356 /* Structure describing the image type `ghostscript'. */
8358 static struct image_type gs_type
=
8368 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8371 gs_clear_image (struct frame
*f
, struct image
*img
)
8373 /* IMG->data.ptr_val may contain a recorded colormap. */
8374 xfree (img
->data
.ptr_val
);
8375 x_clear_image (f
, img
);
8379 /* Return non-zero if OBJECT is a valid Ghostscript image
8383 gs_image_p (Lisp_Object object
)
8385 struct image_keyword fmt
[GS_LAST
];
8389 memcpy (fmt
, gs_format
, sizeof fmt
);
8391 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8394 /* Bounding box must be a list or vector containing 4 integers. */
8395 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8398 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8399 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8404 else if (VECTORP (tem
))
8406 if (XVECTOR (tem
)->size
!= 4)
8408 for (i
= 0; i
< 4; ++i
)
8409 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8419 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8423 gs_load (struct frame
*f
, struct image
*img
)
8426 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8428 double in_width
, in_height
;
8429 Lisp_Object pixel_colors
= Qnil
;
8431 /* Compute pixel size of pixmap needed from the given size in the
8432 image specification. Sizes in the specification are in pt. 1 pt
8433 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8435 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8436 in_width
= INTEGERP (pt_width
) ? XFASTINT (pt_width
) / 72.0 : 0;
8437 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8438 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8439 in_height
= INTEGERP (pt_height
) ? XFASTINT (pt_height
) / 72.0 : 0;
8440 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8442 if (!check_image_size (f
, img
->width
, img
->height
))
8444 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8448 /* Create the pixmap. */
8449 xassert (img
->pixmap
== NO_PIXMAP
);
8451 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8453 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8454 img
->width
, img
->height
,
8455 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8460 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8464 /* Call the loader to fill the pixmap. It returns a process object
8465 if successful. We do not record_unwind_protect here because
8466 other places in redisplay like calling window scroll functions
8467 don't either. Let the Lisp loader use `unwind-protect' instead. */
8468 sprintf (buffer
, "%lu %lu",
8469 (unsigned long) FRAME_X_WINDOW (f
),
8470 (unsigned long) img
->pixmap
);
8471 window_and_pixmap_id
= build_string (buffer
);
8473 sprintf (buffer
, "%lu %lu",
8474 FRAME_FOREGROUND_PIXEL (f
),
8475 FRAME_BACKGROUND_PIXEL (f
));
8476 pixel_colors
= build_string (buffer
);
8478 XSETFRAME (frame
, f
);
8479 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8481 loader
= intern ("gs-load-image");
8483 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8484 make_number (img
->width
),
8485 make_number (img
->height
),
8486 window_and_pixmap_id
,
8488 return PROCESSP (img
->data
.lisp_val
);
8492 /* Kill the Ghostscript process that was started to fill PIXMAP on
8493 frame F. Called from XTread_socket when receiving an event
8494 telling Emacs that Ghostscript has finished drawing. */
8497 x_kill_gs_process (Pixmap pixmap
, struct frame
*f
)
8499 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
8503 /* Find the image containing PIXMAP. */
8504 for (i
= 0; i
< c
->used
; ++i
)
8505 if (c
->images
[i
]->pixmap
== pixmap
)
8508 /* Should someone in between have cleared the image cache, for
8509 instance, give up. */
8513 /* Kill the GS process. We should have found PIXMAP in the image
8514 cache and its image should contain a process object. */
8516 xassert (PROCESSP (img
->data
.lisp_val
));
8517 Fkill_process (img
->data
.lisp_val
, Qnil
);
8518 img
->data
.lisp_val
= Qnil
;
8520 #if defined (HAVE_X_WINDOWS)
8522 /* On displays with a mutable colormap, figure out the colors
8523 allocated for the image by looking at the pixels of an XImage for
8525 class = FRAME_X_VISUAL (f
)->class;
8526 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8532 /* Try to get an XImage for img->pixmep. */
8533 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8534 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8539 /* Initialize the color table. */
8540 init_color_table ();
8542 /* For each pixel of the image, look its color up in the
8543 color table. After having done so, the color table will
8544 contain an entry for each color used by the image. */
8545 for (y
= 0; y
< img
->height
; ++y
)
8546 for (x
= 0; x
< img
->width
; ++x
)
8548 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8549 lookup_pixel_color (f
, pixel
);
8552 /* Record colors in the image. Free color table and XImage. */
8553 #ifdef COLOR_TABLE_SUPPORT
8554 img
->colors
= colors_in_color_table (&img
->ncolors
);
8555 free_color_table ();
8557 XDestroyImage (ximg
);
8559 #if 0 /* This doesn't seem to be the case. If we free the colors
8560 here, we get a BadAccess later in x_clear_image when
8561 freeing the colors. */
8562 /* We have allocated colors once, but Ghostscript has also
8563 allocated colors on behalf of us. So, to get the
8564 reference counts right, free them once. */
8566 x_free_colors (f
, img
->colors
, img
->ncolors
);
8570 image_error ("Cannot get X image of `%s'; colors will not be freed",
8575 #endif /* HAVE_X_WINDOWS */
8577 /* Now that we have the pixmap, compute mask and transform the
8578 image if requested. */
8580 postprocess_image (f
, img
);
8584 #endif /* HAVE_GHOSTSCRIPT */
8587 /***********************************************************************
8589 ***********************************************************************/
8593 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8594 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8597 return valid_image_p (spec
) ? Qt
: Qnil
;
8601 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8606 if (valid_image_p (spec
))
8607 id
= lookup_image (SELECTED_FRAME (), spec
);
8610 return make_number (id
);
8613 #endif /* GLYPH_DEBUG != 0 */
8616 /***********************************************************************
8618 ***********************************************************************/
8621 /* Image types that rely on external libraries are loaded dynamically
8622 if the library is available. */
8623 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8624 define_image_type (image_type, init_lib_fn (libraries))
8626 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8627 define_image_type (image_type, 1)
8628 #endif /* HAVE_NTGUI */
8630 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8631 doc
: /* Initialize image library implementing image type TYPE.
8632 Return non-nil if TYPE is a supported image type.
8634 Image types pbm and xbm are prebuilt; other types are loaded here.
8635 Libraries to load are specified in alist LIBRARIES (usually, the value
8636 of `dynamic-library-alist', which see). */)
8637 (Lisp_Object type
, Lisp_Object libraries
)
8641 /* Don't try to reload the library. */
8642 tested
= Fassq (type
, Vimage_type_cache
);
8644 return XCDR (tested
);
8646 #if defined (HAVE_XPM) || defined (HAVE_NS)
8647 if (EQ (type
, Qxpm
))
8648 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8651 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8652 if (EQ (type
, Qjpeg
))
8653 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8656 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8657 if (EQ (type
, Qtiff
))
8658 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8661 #if defined (HAVE_GIF) || defined (HAVE_NS)
8662 if (EQ (type
, Qgif
))
8663 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8666 #if defined (HAVE_PNG) || defined (HAVE_NS)
8667 if (EQ (type
, Qpng
))
8668 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8671 #if defined (HAVE_RSVG)
8672 if (EQ (type
, Qsvg
))
8673 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8676 #if defined (HAVE_IMAGEMAGICK)
8677 if (EQ (type
, Qimagemagick
))
8679 return CHECK_LIB_AVAILABLE (&imagemagick_type
, init_imagemagick_functions
,
8684 #ifdef HAVE_GHOSTSCRIPT
8685 if (EQ (type
, Qpostscript
))
8686 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8689 /* If the type is not recognized, avoid testing it ever again. */
8690 CACHE_IMAGE_TYPE (type
, Qnil
);
8695 syms_of_image (void)
8697 /* Initialize this only once, since that's what we do with Vimage_types
8698 and they are supposed to be in sync. Initializing here gives correct
8699 operation on GNU/Linux of calling dump-emacs after loading some images. */
8702 /* Must be defined now becase we're going to update it below, while
8703 defining the supported image types. */
8704 DEFVAR_LISP ("image-types", Vimage_types
,
8705 doc
: /* List of potentially supported image types.
8706 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8707 To check whether it is really supported, use `image-type-available-p'. */);
8708 Vimage_types
= Qnil
;
8710 DEFVAR_LISP ("max-image-size", Vmax_image_size
,
8711 doc
: /* Maximum size of images.
8712 Emacs will not load an image into memory if its pixel width or
8713 pixel height exceeds this limit.
8715 If the value is an integer, it directly specifies the maximum
8716 image height and width, measured in pixels. If it is a floating
8717 point number, it specifies the maximum image height and width
8718 as a ratio to the frame height and width. If the value is
8719 non-numeric, there is no explicit limit on the size of images. */);
8720 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8722 Vimage_type_cache
= Qnil
;
8723 staticpro (&Vimage_type_cache
);
8725 Qpbm
= intern_c_string ("pbm");
8727 ADD_IMAGE_TYPE (Qpbm
);
8729 Qxbm
= intern_c_string ("xbm");
8731 ADD_IMAGE_TYPE (Qxbm
);
8733 define_image_type (&xbm_type
, 1);
8734 define_image_type (&pbm_type
, 1);
8736 Qcount
= intern_c_string ("count");
8737 staticpro (&Qcount
);
8738 Qextension_data
= intern_c_string ("extension-data");
8739 staticpro (&Qextension_data
);
8741 QCascent
= intern_c_string (":ascent");
8742 staticpro (&QCascent
);
8743 QCmargin
= intern_c_string (":margin");
8744 staticpro (&QCmargin
);
8745 QCrelief
= intern_c_string (":relief");
8746 staticpro (&QCrelief
);
8747 QCconversion
= intern_c_string (":conversion");
8748 staticpro (&QCconversion
);
8749 QCcolor_symbols
= intern_c_string (":color-symbols");
8750 staticpro (&QCcolor_symbols
);
8751 QCheuristic_mask
= intern_c_string (":heuristic-mask");
8752 staticpro (&QCheuristic_mask
);
8753 QCindex
= intern_c_string (":index");
8754 staticpro (&QCindex
);
8755 QCgeometry
= intern_c_string (":geometry");
8756 staticpro (&QCgeometry
);
8757 QCcrop
= intern_c_string (":crop");
8758 staticpro (&QCcrop
);
8759 QCrotation
= intern_c_string (":rotation");
8760 staticpro (&QCrotation
);
8761 QCmatrix
= intern_c_string (":matrix");
8762 staticpro (&QCmatrix
);
8763 QCcolor_adjustment
= intern_c_string (":color-adjustment");
8764 staticpro (&QCcolor_adjustment
);
8765 QCmask
= intern_c_string (":mask");
8766 staticpro (&QCmask
);
8768 Qlaplace
= intern_c_string ("laplace");
8769 staticpro (&Qlaplace
);
8770 Qemboss
= intern_c_string ("emboss");
8771 staticpro (&Qemboss
);
8772 Qedge_detection
= intern_c_string ("edge-detection");
8773 staticpro (&Qedge_detection
);
8774 Qheuristic
= intern_c_string ("heuristic");
8775 staticpro (&Qheuristic
);
8777 Qpostscript
= intern_c_string ("postscript");
8778 staticpro (&Qpostscript
);
8779 #ifdef HAVE_GHOSTSCRIPT
8780 ADD_IMAGE_TYPE (Qpostscript
);
8781 QCloader
= intern_c_string (":loader");
8782 staticpro (&QCloader
);
8783 QCbounding_box
= intern_c_string (":bounding-box");
8784 staticpro (&QCbounding_box
);
8785 QCpt_width
= intern_c_string (":pt-width");
8786 staticpro (&QCpt_width
);
8787 QCpt_height
= intern_c_string (":pt-height");
8788 staticpro (&QCpt_height
);
8789 #endif /* HAVE_GHOSTSCRIPT */
8792 Qlibpng_version
= intern_c_string ("libpng-version");
8793 staticpro (&Qlibpng_version
);
8794 Fset (Qlibpng_version
,
8796 make_number (PNG_LIBPNG_VER
)
8803 #if defined (HAVE_XPM) || defined (HAVE_NS)
8804 Qxpm
= intern_c_string ("xpm");
8806 ADD_IMAGE_TYPE (Qxpm
);
8809 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8810 Qjpeg
= intern_c_string ("jpeg");
8812 ADD_IMAGE_TYPE (Qjpeg
);
8815 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8816 Qtiff
= intern_c_string ("tiff");
8818 ADD_IMAGE_TYPE (Qtiff
);
8821 #if defined (HAVE_GIF) || defined (HAVE_NS)
8822 Qgif
= intern_c_string ("gif");
8824 ADD_IMAGE_TYPE (Qgif
);
8827 #if defined (HAVE_PNG) || defined (HAVE_NS)
8828 Qpng
= intern_c_string ("png");
8830 ADD_IMAGE_TYPE (Qpng
);
8833 #if defined (HAVE_IMAGEMAGICK)
8834 Qimagemagick
= intern_c_string ("imagemagick");
8835 staticpro (&Qimagemagick
);
8836 ADD_IMAGE_TYPE (Qimagemagick
);
8839 #if defined (HAVE_RSVG)
8840 Qsvg
= intern_c_string ("svg");
8842 ADD_IMAGE_TYPE (Qsvg
);
8844 /* Other libraries used directly by svg code. */
8845 Qgdk_pixbuf
= intern_c_string ("gdk-pixbuf");
8846 staticpro (&Qgdk_pixbuf
);
8847 Qglib
= intern_c_string ("glib");
8849 Qgobject
= intern_c_string ("gobject");
8850 staticpro (&Qgobject
);
8851 #endif /* HAVE_NTGUI */
8852 #endif /* HAVE_RSVG */
8854 defsubr (&Sinit_image_library
);
8855 #ifdef HAVE_IMAGEMAGICK
8856 defsubr (&Simagemagick_types
);
8858 defsubr (&Sclear_image_cache
);
8859 defsubr (&Simage_flush
);
8860 defsubr (&Simage_size
);
8861 defsubr (&Simage_mask_p
);
8862 defsubr (&Simage_metadata
);
8866 defsubr (&Slookup_image
);
8869 DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images
,
8870 doc
: /* Non-nil means always draw a cross over disabled images.
8871 Disabled images are those having a `:conversion disabled' property.
8872 A cross is always drawn on black & white displays. */);
8873 cross_disabled_images
= 0;
8875 DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path
,
8876 doc
: /* List of directories to search for window system bitmap files. */);
8877 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8879 DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay
,
8880 doc
: /* Maximum time after which images are removed from the cache.
8881 When an image has not been displayed this many seconds, Emacs
8882 automatically removes it from the image cache. If the cache contains
8883 a large number of images, the actual eviction time may be shorter.
8884 The value can also be nil, meaning the cache is never cleared.
8886 The function `clear-image-cache' disregards this variable. */);
8887 Vimage_cache_eviction_delay
= make_number (300);
8888 #ifdef HAVE_IMAGEMAGICK
8889 DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type
,
8890 doc
: /* Choose between ImageMagick render methods. */);