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
);
836 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
840 case IMAGE_NUMBER_VALUE
:
841 if (!INTEGERP (value
) && !FLOATP (value
))
845 case IMAGE_INTEGER_VALUE
:
846 if (!INTEGERP (value
))
850 case IMAGE_BOOL_VALUE
:
851 if (!NILP (value
) && !EQ (value
, Qt
))
860 if (EQ (key
, QCtype
) && !EQ (type
, value
))
864 /* Check that all mandatory fields are present. */
865 for (i
= 0; i
< nkeywords
; ++i
)
866 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
873 /* Return the value of KEY in image specification SPEC. Value is nil
874 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
875 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
878 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
882 xassert (valid_image_p (spec
));
884 for (tail
= XCDR (spec
);
885 CONSP (tail
) && CONSP (XCDR (tail
));
886 tail
= XCDR (XCDR (tail
)))
888 if (EQ (XCAR (tail
), key
))
892 return XCAR (XCDR (tail
));
902 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
903 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
904 PIXELS non-nil means return the size in pixels, otherwise return the
905 size in canonical character units.
906 FRAME is the frame on which the image will be displayed. FRAME nil
907 or omitted means use the selected frame. */)
908 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
913 if (valid_image_p (spec
))
915 struct frame
*f
= check_x_frame (frame
);
916 int id
= lookup_image (f
, spec
);
917 struct image
*img
= IMAGE_FROM_ID (f
, id
);
918 int width
= img
->width
+ 2 * img
->hmargin
;
919 int height
= img
->height
+ 2 * img
->vmargin
;
922 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
923 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
925 size
= Fcons (make_number (width
), make_number (height
));
928 error ("Invalid image specification");
934 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
935 doc
: /* Return t if image SPEC has a mask bitmap.
936 FRAME is the frame on which the image will be displayed. FRAME nil
937 or omitted means use the selected frame. */)
938 (Lisp_Object spec
, Lisp_Object frame
)
943 if (valid_image_p (spec
))
945 struct frame
*f
= check_x_frame (frame
);
946 int id
= lookup_image (f
, spec
);
947 struct image
*img
= IMAGE_FROM_ID (f
, id
);
952 error ("Invalid image specification");
957 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
958 doc
: /* Return metadata for image SPEC.
959 FRAME is the frame on which the image will be displayed. FRAME nil
960 or omitted means use the selected frame. */)
961 (Lisp_Object spec
, Lisp_Object frame
)
966 if (valid_image_p (spec
))
968 struct frame
*f
= check_x_frame (frame
);
969 int id
= lookup_image (f
, spec
);
970 struct image
*img
= IMAGE_FROM_ID (f
, id
);
971 ext
= img
->data
.lisp_val
;
978 /***********************************************************************
979 Image type independent image structures
980 ***********************************************************************/
982 static struct image
*make_image (Lisp_Object spec
, unsigned hash
);
983 static void free_image (struct frame
*f
, struct image
*img
);
984 static int check_image_size (struct frame
*f
, int width
, int height
);
986 #define MAX_IMAGE_SIZE 6.0
987 /* Allocate and return a new image structure for image specification
988 SPEC. SPEC has a hash value of HASH. */
990 static struct image
*
991 make_image (Lisp_Object spec
, unsigned int hash
)
993 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
994 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
996 xassert (valid_image_p (spec
));
997 memset (img
, 0, sizeof *img
);
998 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
999 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1000 xassert (img
->type
!= NULL
);
1002 img
->data
.lisp_val
= Qnil
;
1003 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1005 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1010 /* Free image IMG which was used on frame F, including its resources. */
1013 free_image (struct frame
*f
, struct image
*img
)
1017 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1019 /* Remove IMG from the hash table of its cache. */
1021 img
->prev
->next
= img
->next
;
1023 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1026 img
->next
->prev
= img
->prev
;
1028 c
->images
[img
->id
] = NULL
;
1030 /* Free resources, then free IMG. */
1031 img
->type
->free (f
, img
);
1036 /* Return 1 if the given widths and heights are valid for display;
1037 otherwise, return 0. */
1040 check_image_size (struct frame
*f
, int width
, int height
)
1044 if (width
<= 0 || height
<= 0)
1047 if (INTEGERP (Vmax_image_size
))
1048 w
= h
= XINT (Vmax_image_size
);
1049 else if (FLOATP (Vmax_image_size
))
1053 w
= FRAME_PIXEL_WIDTH (f
);
1054 h
= FRAME_PIXEL_HEIGHT (f
);
1057 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1058 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1059 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1064 return (width
<= w
&& height
<= h
);
1067 /* Prepare image IMG for display on frame F. Must be called before
1068 drawing an image. */
1071 prepare_image_for_display (struct frame
*f
, struct image
*img
)
1075 /* We're about to display IMG, so set its timestamp to `now'. */
1077 img
->timestamp
= EMACS_SECS (t
);
1079 /* If IMG doesn't have a pixmap yet, load it now, using the image
1080 type dependent loader function. */
1081 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1082 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1087 /* Value is the number of pixels for the ascent of image IMG when
1088 drawn in face FACE. */
1091 image_ascent (struct image
*img
, struct face
*face
, struct glyph_slice
*slice
)
1096 if (slice
->height
== img
->height
)
1097 height
= img
->height
+ img
->vmargin
;
1098 else if (slice
->y
== 0)
1099 height
= slice
->height
+ img
->vmargin
;
1101 height
= slice
->height
;
1103 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1108 /* W32 specific version. Why?. ++kfs */
1109 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1110 - FONT_BASE (face
->font
)) / 2;
1112 /* This expression is arranged so that if the image can't be
1113 exactly centered, it will be moved slightly up. This is
1114 because a typical font is `top-heavy' (due to the presence
1115 uppercase letters), so the image placement should err towards
1116 being top-heavy too. It also just generally looks better. */
1117 ascent
= (height
+ FONT_BASE(face
->font
)
1118 - FONT_DESCENT(face
->font
) + 1) / 2;
1119 #endif /* HAVE_NTGUI */
1122 ascent
= height
/ 2;
1125 ascent
= (int) (height
* img
->ascent
/ 100.0);
1131 /* Image background colors. */
1133 /* Find the "best" corner color of a bitmap.
1134 On W32, XIMG is assumed to a device context with the bitmap selected. */
1136 static RGB_PIXEL_COLOR
1137 four_corners_best (XImagePtr_or_DC ximg
, int *corners
,
1138 unsigned long width
, unsigned long height
)
1140 RGB_PIXEL_COLOR corner_pixels
[4], best
IF_LINT (= 0);
1143 if (corners
&& corners
[BOT_CORNER
] >= 0)
1145 /* Get the colors at the corner_pixels of ximg. */
1146 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1147 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1148 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1149 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1153 /* Get the colors at the corner_pixels of ximg. */
1154 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1155 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1156 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1157 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1159 /* Choose the most frequently found color as background. */
1160 for (i
= best_count
= 0; i
< 4; ++i
)
1164 for (j
= n
= 0; j
< 4; ++j
)
1165 if (corner_pixels
[i
] == corner_pixels
[j
])
1169 best
= corner_pixels
[i
], best_count
= n
;
1175 /* Portability macros */
1179 #define Destroy_Image(img_dc, prev) \
1180 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1182 #define Free_Pixmap(display, pixmap) \
1183 DeleteObject (pixmap)
1185 #elif defined (HAVE_NS)
1187 #define Destroy_Image(ximg, dummy) \
1188 ns_release_object (ximg)
1190 #define Free_Pixmap(display, pixmap) \
1191 ns_release_object (pixmap)
1195 #define Destroy_Image(ximg, dummy) \
1196 XDestroyImage (ximg)
1198 #define Free_Pixmap(display, pixmap) \
1199 XFreePixmap (display, pixmap)
1201 #endif /* !HAVE_NTGUI && !HAVE_NS */
1204 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1205 it is guessed heuristically. If non-zero, XIMG is an existing
1206 XImage object (or device context with the image selected on W32) to
1207 use for the heuristic. */
1210 image_background (struct image
*img
, struct frame
*f
, XImagePtr_or_DC ximg
)
1212 if (! img
->background_valid
)
1213 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1215 int free_ximg
= !ximg
;
1218 #endif /* HAVE_NTGUI */
1223 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1224 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1226 HDC frame_dc
= get_frame_dc (f
);
1227 ximg
= CreateCompatibleDC (frame_dc
);
1228 release_frame_dc (f
, frame_dc
);
1229 prev
= SelectObject (ximg
, img
->pixmap
);
1230 #endif /* !HAVE_NTGUI */
1233 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1236 Destroy_Image (ximg
, prev
);
1238 img
->background_valid
= 1;
1241 return img
->background
;
1244 /* Return the `background_transparent' field of IMG. If IMG doesn't
1245 have one yet, it is guessed heuristically. If non-zero, MASK is an
1246 existing XImage object to use for the heuristic. */
1249 image_background_transparent (struct image
*img
, struct frame
*f
, XImagePtr_or_DC mask
)
1251 if (! img
->background_transparent_valid
)
1252 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1256 int free_mask
= !mask
;
1259 #endif /* HAVE_NTGUI */
1264 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1265 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1267 HDC frame_dc
= get_frame_dc (f
);
1268 mask
= CreateCompatibleDC (frame_dc
);
1269 release_frame_dc (f
, frame_dc
);
1270 prev
= SelectObject (mask
, img
->mask
);
1271 #endif /* HAVE_NTGUI */
1274 img
->background_transparent
1275 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1278 Destroy_Image (mask
, prev
);
1281 img
->background_transparent
= 0;
1283 img
->background_transparent_valid
= 1;
1286 return img
->background_transparent
;
1290 /***********************************************************************
1291 Helper functions for X image types
1292 ***********************************************************************/
1294 static void x_clear_image_1 (struct frame
*, struct image
*, int,
1296 static void x_clear_image (struct frame
*f
, struct image
*img
);
1297 static unsigned long x_alloc_image_color (struct frame
*f
,
1299 Lisp_Object color_name
,
1300 unsigned long dflt
);
1303 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1304 free the pixmap if any. MASK_P non-zero means clear the mask
1305 pixmap if any. COLORS_P non-zero means free colors allocated for
1306 the image, if any. */
1309 x_clear_image_1 (struct frame
*f
, struct image
*img
, int pixmap_p
, int mask_p
,
1312 if (pixmap_p
&& img
->pixmap
)
1314 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1315 img
->pixmap
= NO_PIXMAP
;
1316 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1317 img
->background_valid
= 0;
1320 if (mask_p
&& img
->mask
)
1322 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1323 img
->mask
= NO_PIXMAP
;
1324 img
->background_transparent_valid
= 0;
1327 if (colors_p
&& img
->ncolors
)
1329 /* W32_TODO: color table support. */
1330 #ifdef HAVE_X_WINDOWS
1331 x_free_colors (f
, img
->colors
, img
->ncolors
);
1332 #endif /* HAVE_X_WINDOWS */
1333 xfree (img
->colors
);
1340 /* Free X resources of image IMG which is used on frame F. */
1343 x_clear_image (struct frame
*f
, struct image
*img
)
1346 x_clear_image_1 (f
, img
, 1, 1, 1);
1351 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1352 cannot be allocated, use DFLT. Add a newly allocated color to
1353 IMG->colors, so that it can be freed again. Value is the pixel
1356 static unsigned long
1357 x_alloc_image_color (struct frame
*f
, struct image
*img
, Lisp_Object color_name
,
1361 unsigned long result
;
1363 xassert (STRINGP (color_name
));
1365 if (x_defined_color (f
, SSDATA (color_name
), &color
, 1))
1367 /* This isn't called frequently so we get away with simply
1368 reallocating the color vector to the needed size, here. */
1371 (unsigned long *) xrealloc (img
->colors
,
1372 img
->ncolors
* sizeof *img
->colors
);
1373 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1374 result
= color
.pixel
;
1384 /***********************************************************************
1386 ***********************************************************************/
1388 static struct image
*search_image_cache (struct frame
*, Lisp_Object
, unsigned);
1389 static void cache_image (struct frame
*f
, struct image
*img
);
1390 static void postprocess_image (struct frame
*, struct image
*);
1392 /* Return a new, initialized image cache that is allocated from the
1393 heap. Call free_image_cache to free an image cache. */
1395 struct image_cache
*
1396 make_image_cache (void)
1398 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1401 memset (c
, 0, sizeof *c
);
1403 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1404 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1405 c
->buckets
= (struct image
**) xmalloc (size
);
1406 memset (c
->buckets
, 0, size
);
1411 /* Find an image matching SPEC in the cache, and return it. If no
1412 image is found, return NULL. */
1413 static struct image
*
1414 search_image_cache (struct frame
*f
, Lisp_Object spec
, unsigned int hash
)
1417 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1418 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1420 if (!c
) return NULL
;
1422 /* If the image spec does not specify a background color, the cached
1423 image must have the same background color as the current frame.
1424 The foreground color must also match, for the sake of monochrome
1427 In fact, we could ignore the foreground color matching condition
1428 for color images, or if the image spec specifies :foreground;
1429 similarly we could ignore the background color matching condition
1430 for formats that don't use transparency (such as jpeg), or if the
1431 image spec specifies :background. However, the extra memory
1432 usage is probably negligible in practice, so we don't bother. */
1434 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1435 if (img
->hash
== hash
1436 && !NILP (Fequal (img
->spec
, spec
))
1437 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1438 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1444 /* Search frame F for an image with spec SPEC, and free it. */
1447 uncache_image (struct frame
*f
, Lisp_Object spec
)
1449 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1452 free_image (f
, img
);
1453 /* As display glyphs may still be referring to the image ID, we
1454 must garbage the frame (Bug#6426). */
1455 SET_FRAME_GARBAGED (f
);
1460 /* Free image cache of frame F. Be aware that X frames share images
1464 free_image_cache (struct frame
*f
)
1466 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1471 /* Cache should not be referenced by any frame when freed. */
1472 xassert (c
->refcount
== 0);
1474 for (i
= 0; i
< c
->used
; ++i
)
1475 free_image (f
, c
->images
[i
]);
1479 FRAME_IMAGE_CACHE (f
) = NULL
;
1484 /* Clear image cache of frame F. FILTER=t means free all images.
1485 FILTER=nil means clear only images that haven't been
1486 displayed for some time.
1487 Else, only free the images which have FILTER in their `dependencies'.
1488 Should be called from time to time to reduce the number of loaded images.
1489 If image-cache-eviction-delay is non-nil, this frees images in the cache
1490 which weren't displayed for at least that many seconds. */
1493 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1495 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1501 /* Block input so that we won't be interrupted by a SIGIO
1502 while being in an inconsistent state. */
1507 /* Filter image cache. */
1508 for (i
= 0; i
< c
->used
; ++i
)
1510 struct image
*img
= c
->images
[i
];
1511 if (img
&& (EQ (Qt
, filter
)
1512 || !NILP (Fmember (filter
, img
->dependencies
))))
1514 free_image (f
, img
);
1519 else if (INTEGERP (Vimage_cache_eviction_delay
))
1521 /* Free cache based on timestamp. */
1524 int delay
, nimages
= 0;
1526 for (i
= 0; i
< c
->used
; ++i
)
1530 /* If the number of cached images has grown unusually large,
1531 decrease the cache eviction delay (Bug#6230). */
1532 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1534 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1537 old
= EMACS_SECS (t
) - delay
;
1539 for (i
= 0; i
< c
->used
; ++i
)
1541 struct image
*img
= c
->images
[i
];
1542 if (img
&& img
->timestamp
< old
)
1544 free_image (f
, img
);
1550 /* We may be clearing the image cache because, for example,
1551 Emacs was iconified for a longer period of time. In that
1552 case, current matrices may still contain references to
1553 images freed above. So, clear these matrices. */
1556 Lisp_Object tail
, frame
;
1558 FOR_EACH_FRAME (tail
, frame
)
1560 struct frame
*fr
= XFRAME (frame
);
1561 if (FRAME_IMAGE_CACHE (fr
) == c
)
1562 clear_current_matrices (fr
);
1565 ++windows_or_buffers_changed
;
1573 clear_image_caches (Lisp_Object filter
)
1575 /* FIXME: We want to do
1576 * struct terminal *t;
1577 * for (t = terminal_list; t; t = t->next_terminal)
1578 * clear_image_cache (t, filter); */
1579 Lisp_Object tail
, frame
;
1580 FOR_EACH_FRAME (tail
, frame
)
1581 if (FRAME_WINDOW_P (XFRAME (frame
)))
1582 clear_image_cache (XFRAME (frame
), filter
);
1585 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1587 doc
: /* Clear the image cache.
1588 FILTER nil or a frame means clear all images in the selected frame.
1589 FILTER t means clear the image caches of all frames.
1590 Anything else, means only clear those images which refer to FILTER,
1591 which is then usually a filename. */)
1592 (Lisp_Object filter
)
1594 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1595 clear_image_caches (filter
);
1597 clear_image_cache (check_x_frame (filter
), Qt
);
1603 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1605 doc
: /* Fush the image with specification SPEC on frame FRAME.
1606 This removes the image from the Emacs image cache. If SPEC specifies
1607 an image file, the next redisplay of this image will read from the
1608 current contents of that file.
1610 FRAME nil or omitted means use the selected frame.
1611 FRAME t means refresh the image on all frames. */)
1612 (Lisp_Object spec
, Lisp_Object frame
)
1614 if (!valid_image_p (spec
))
1615 error ("Invalid image specification");
1620 FOR_EACH_FRAME (tail
, frame
)
1622 struct frame
*f
= XFRAME (frame
);
1623 if (FRAME_WINDOW_P (f
))
1624 uncache_image (f
, spec
);
1628 uncache_image (check_x_frame (frame
), spec
);
1634 /* Compute masks and transform image IMG on frame F, as specified
1635 by the image's specification, */
1638 postprocess_image (struct frame
*f
, struct image
*img
)
1640 /* Manipulation of the image's mask. */
1643 Lisp_Object conversion
, spec
;
1648 /* `:heuristic-mask t'
1650 means build a mask heuristically.
1651 `:heuristic-mask (R G B)'
1652 `:mask (heuristic (R G B))'
1653 means build a mask from color (R G B) in the
1656 means remove a mask, if any. */
1658 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1660 x_build_heuristic_mask (f
, img
, mask
);
1665 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1667 if (EQ (mask
, Qheuristic
))
1668 x_build_heuristic_mask (f
, img
, Qt
);
1669 else if (CONSP (mask
)
1670 && EQ (XCAR (mask
), Qheuristic
))
1672 if (CONSP (XCDR (mask
)))
1673 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1675 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1677 else if (NILP (mask
) && found_p
&& img
->mask
)
1679 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1680 img
->mask
= NO_PIXMAP
;
1685 /* Should we apply an image transformation algorithm? */
1686 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1687 if (EQ (conversion
, Qdisabled
))
1688 x_disable_image (f
, img
);
1689 else if (EQ (conversion
, Qlaplace
))
1691 else if (EQ (conversion
, Qemboss
))
1693 else if (CONSP (conversion
)
1694 && EQ (XCAR (conversion
), Qedge_detection
))
1697 tem
= XCDR (conversion
);
1699 x_edge_detection (f
, img
,
1700 Fplist_get (tem
, QCmatrix
),
1701 Fplist_get (tem
, QCcolor_adjustment
));
1707 /* Return the id of image with Lisp specification SPEC on frame F.
1708 SPEC must be a valid Lisp image specification (see valid_image_p). */
1711 lookup_image (struct frame
*f
, Lisp_Object spec
)
1713 struct image_cache
*c
;
1718 /* F must be a window-system frame, and SPEC must be a valid image
1720 xassert (FRAME_WINDOW_P (f
));
1721 xassert (valid_image_p (spec
));
1723 c
= FRAME_IMAGE_CACHE (f
);
1725 /* Look up SPEC in the hash table of the image cache. */
1726 hash
= sxhash (spec
, 0);
1727 img
= search_image_cache (f
, spec
, hash
);
1728 if (img
&& img
->load_failed_p
)
1730 free_image (f
, img
);
1734 /* If not found, create a new image and cache it. */
1738 img
= make_image (spec
, hash
);
1739 cache_image (f
, img
);
1740 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1741 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1742 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1744 /* If we can't load the image, and we don't have a width and
1745 height, use some arbitrary width and height so that we can
1746 draw a rectangle for it. */
1747 if (img
->load_failed_p
)
1751 value
= image_spec_value (spec
, QCwidth
, NULL
);
1752 img
->width
= (INTEGERP (value
)
1753 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1754 value
= image_spec_value (spec
, QCheight
, NULL
);
1755 img
->height
= (INTEGERP (value
)
1756 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1760 /* Handle image type independent image attributes
1761 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1762 `:background COLOR'. */
1763 Lisp_Object ascent
, margin
, relief
, bg
;
1765 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1766 if (INTEGERP (ascent
))
1767 img
->ascent
= XFASTINT (ascent
);
1768 else if (EQ (ascent
, Qcenter
))
1769 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1771 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1772 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1773 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1774 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1775 && INTEGERP (XCDR (margin
)))
1777 if (XINT (XCAR (margin
)) > 0)
1778 img
->hmargin
= XFASTINT (XCAR (margin
));
1779 if (XINT (XCDR (margin
)) > 0)
1780 img
->vmargin
= XFASTINT (XCDR (margin
));
1783 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1784 if (INTEGERP (relief
))
1786 img
->relief
= XINT (relief
);
1787 img
->hmargin
+= eabs (img
->relief
);
1788 img
->vmargin
+= eabs (img
->relief
);
1791 if (! img
->background_valid
)
1793 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1797 = x_alloc_image_color (f
, img
, bg
,
1798 FRAME_BACKGROUND_PIXEL (f
));
1799 img
->background_valid
= 1;
1803 /* Do image transformations and compute masks, unless we
1804 don't have the image yet. */
1805 if (!EQ (*img
->type
->type
, Qpostscript
))
1806 postprocess_image (f
, img
);
1812 /* We're using IMG, so set its timestamp to `now'. */
1813 EMACS_GET_TIME (now
);
1814 img
->timestamp
= EMACS_SECS (now
);
1816 /* Value is the image id. */
1821 /* Cache image IMG in the image cache of frame F. */
1824 cache_image (struct frame
*f
, struct image
*img
)
1826 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1829 /* Find a free slot in c->images. */
1830 for (i
= 0; i
< c
->used
; ++i
)
1831 if (c
->images
[i
] == NULL
)
1834 /* If no free slot found, maybe enlarge c->images. */
1835 if (i
== c
->used
&& c
->used
== c
->size
)
1838 c
->images
= (struct image
**) xrealloc (c
->images
,
1839 c
->size
* sizeof *c
->images
);
1842 /* Add IMG to c->images, and assign IMG an id. */
1848 /* Add IMG to the cache's hash table. */
1849 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1850 img
->next
= c
->buckets
[i
];
1852 img
->next
->prev
= img
;
1854 c
->buckets
[i
] = img
;
1858 /* Call FN on every image in the image cache of frame F. Used to mark
1859 Lisp Objects in the image cache. */
1861 /* Mark Lisp objects in image IMG. */
1864 mark_image (struct image
*img
)
1866 mark_object (img
->spec
);
1867 mark_object (img
->dependencies
);
1869 if (!NILP (img
->data
.lisp_val
))
1870 mark_object (img
->data
.lisp_val
);
1875 mark_image_cache (struct image_cache
*c
)
1880 for (i
= 0; i
< c
->used
; ++i
)
1882 mark_image (c
->images
[i
]);
1888 /***********************************************************************
1889 X / NS / W32 support code
1890 ***********************************************************************/
1894 /* Macro for defining functions that will be loaded from image DLLs. */
1895 #define DEF_IMGLIB_FN(rettype,func,args) rettype (FAR CDECL *fn_##func)args
1897 /* Macro for loading those image functions from the library. */
1898 #define LOAD_IMGLIB_FN(lib,func) { \
1899 fn_##func = (void *) GetProcAddress (lib, #func); \
1900 if (!fn_##func) return 0; \
1903 /* Load a DLL implementing an image type.
1904 The argument LIBRARIES is usually the variable
1905 `dynamic-library-alist', which associates a symbol, identifying
1906 an external DLL library, to a list of possible filenames.
1907 The function returns NULL if no library could be loaded for
1908 the given symbol, or if the library was previously loaded;
1909 else the handle of the DLL. */
1911 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
1913 HMODULE library
= NULL
;
1915 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
1917 Lisp_Object dlls
= Fassq (type
, libraries
);
1920 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
1922 CHECK_STRING_CAR (dlls
);
1923 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
1931 #endif /* HAVE_NTGUI */
1933 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1934 XImagePtr
*, Pixmap
*);
1935 static void x_destroy_x_image (XImagePtr
);
1936 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1939 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1940 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1941 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1942 via xmalloc. Print error messages via image_error if an error
1943 occurs. Value is non-zero if successful.
1945 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1946 should indicate the bit depth of the image. */
1949 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1950 XImagePtr
*ximg
, Pixmap
*pixmap
)
1952 #ifdef HAVE_X_WINDOWS
1953 Display
*display
= FRAME_X_DISPLAY (f
);
1954 Window window
= FRAME_X_WINDOW (f
);
1955 Screen
*screen
= FRAME_X_SCREEN (f
);
1957 xassert (interrupt_input_blocked
);
1960 depth
= DefaultDepthOfScreen (screen
);
1961 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1962 depth
, ZPixmap
, 0, NULL
, width
, height
,
1963 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1966 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1970 /* Allocate image raster. */
1971 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1973 /* Allocate a pixmap of the same size. */
1974 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1975 if (*pixmap
== NO_PIXMAP
)
1977 x_destroy_x_image (*ximg
);
1979 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1984 #endif /* HAVE_X_WINDOWS */
1988 BITMAPINFOHEADER
*header
;
1990 int scanline_width_bits
;
1992 int palette_colors
= 0;
1997 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1998 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2000 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2004 scanline_width_bits
= width
* depth
;
2005 remainder
= scanline_width_bits
% 32;
2008 scanline_width_bits
+= 32 - remainder
;
2010 /* Bitmaps with a depth less than 16 need a palette. */
2011 /* BITMAPINFO structure already contains the first RGBQUAD. */
2013 palette_colors
= 1 << depth
- 1;
2015 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2018 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2022 header
= &(*ximg
)->info
.bmiHeader
;
2023 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
2024 header
->biSize
= sizeof (*header
);
2025 header
->biWidth
= width
;
2026 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2027 header
->biPlanes
= 1;
2028 header
->biBitCount
= depth
;
2029 header
->biCompression
= BI_RGB
;
2030 header
->biClrUsed
= palette_colors
;
2032 /* TODO: fill in palette. */
2035 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2036 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2037 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2038 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2039 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2040 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2041 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2042 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2045 hdc
= get_frame_dc (f
);
2047 /* Create a DIBSection and raster array for the bitmap,
2048 and store its handle in *pixmap. */
2049 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2050 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2051 /* casting avoids a GCC warning */
2052 (void **)&((*ximg
)->data
), NULL
, 0);
2054 /* Realize display palette and garbage all frames. */
2055 release_frame_dc (f
, hdc
);
2057 if (*pixmap
== NULL
)
2059 DWORD err
= GetLastError ();
2060 Lisp_Object errcode
;
2061 /* All system errors are < 10000, so the following is safe. */
2062 XSETINT (errcode
, (int) err
);
2063 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2064 x_destroy_x_image (*ximg
);
2070 #endif /* HAVE_NTGUI */
2073 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2077 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2086 /* Destroy XImage XIMG. Free XIMG->data. */
2089 x_destroy_x_image (XImagePtr ximg
)
2091 xassert (interrupt_input_blocked
);
2094 #ifdef HAVE_X_WINDOWS
2097 XDestroyImage (ximg
);
2098 #endif /* HAVE_X_WINDOWS */
2100 /* Data will be freed by DestroyObject. */
2103 #endif /* HAVE_NTGUI */
2105 ns_release_object (ximg
);
2106 #endif /* HAVE_NS */
2111 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2112 are width and height of both the image and pixmap. */
2115 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2117 #ifdef HAVE_X_WINDOWS
2120 xassert (interrupt_input_blocked
);
2121 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2122 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2123 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2124 #endif /* HAVE_X_WINDOWS */
2127 #if 0 /* I don't think this is necessary looking at where it is used. */
2128 HDC hdc
= get_frame_dc (f
);
2129 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2130 release_frame_dc (f
, hdc
);
2132 #endif /* HAVE_NTGUI */
2135 xassert (ximg
== pixmap
);
2136 ns_retain_object (ximg
);
2141 /***********************************************************************
2143 ***********************************************************************/
2145 static unsigned char *slurp_file (char *, int *);
2148 /* Find image file FILE. Look in data-directory/images, then
2149 x-bitmap-file-path. Value is the encoded full name of the file
2150 found, or nil if not found. */
2153 x_find_image_file (Lisp_Object file
)
2155 Lisp_Object file_found
, search_path
;
2158 /* TODO I think this should use something like image-load-path
2159 instead. Unfortunately, that can contain non-string elements. */
2160 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2162 Vx_bitmap_file_path
);
2164 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2165 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2171 file_found
= ENCODE_FILE (file_found
);
2179 /* Read FILE into memory. Value is a pointer to a buffer allocated
2180 with xmalloc holding FILE's contents. Value is null if an error
2181 occurred. *SIZE is set to the size of the file. */
2183 static unsigned char *
2184 slurp_file (char *file
, int *size
)
2187 unsigned char *buf
= NULL
;
2190 if (stat (file
, &st
) == 0
2191 && (fp
= fopen (file
, "rb")) != NULL
2192 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2193 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2214 /***********************************************************************
2216 ***********************************************************************/
2218 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2219 static int xbm_load (struct frame
*f
, struct image
*img
);
2220 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2221 unsigned char *, unsigned char *);
2222 static int xbm_image_p (Lisp_Object object
);
2223 static int xbm_read_bitmap_data (struct frame
*f
,
2224 unsigned char *, unsigned char *,
2225 int *, int *, char **, int);
2226 static int xbm_file_p (Lisp_Object
);
2229 /* Indices of image specification fields in xbm_format, below. */
2231 enum xbm_keyword_index
2249 /* Vector of image_keyword structures describing the format
2250 of valid XBM image specifications. */
2252 static const struct image_keyword xbm_format
[XBM_LAST
] =
2254 {":type", IMAGE_SYMBOL_VALUE
, 1},
2255 {":file", IMAGE_STRING_VALUE
, 0},
2256 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2257 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2258 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2259 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2260 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2261 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2262 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2263 {":relief", IMAGE_INTEGER_VALUE
, 0},
2264 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2265 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2266 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2269 /* Structure describing the image type XBM. */
2271 static struct image_type xbm_type
=
2280 /* Tokens returned from xbm_scan. */
2289 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2290 A valid specification is a list starting with the symbol `image'
2291 The rest of the list is a property list which must contain an
2294 If the specification specifies a file to load, it must contain
2295 an entry `:file FILENAME' where FILENAME is a string.
2297 If the specification is for a bitmap loaded from memory it must
2298 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2299 WIDTH and HEIGHT are integers > 0. DATA may be:
2301 1. a string large enough to hold the bitmap data, i.e. it must
2302 have a size >= (WIDTH + 7) / 8 * HEIGHT
2304 2. a bool-vector of size >= WIDTH * HEIGHT
2306 3. a vector of strings or bool-vectors, one for each line of the
2309 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2310 may not be specified in this case because they are defined in the
2313 Both the file and data forms may contain the additional entries
2314 `:background COLOR' and `:foreground COLOR'. If not present,
2315 foreground and background of the frame on which the image is
2316 displayed is used. */
2319 xbm_image_p (Lisp_Object object
)
2321 struct image_keyword kw
[XBM_LAST
];
2323 memcpy (kw
, xbm_format
, sizeof kw
);
2324 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2327 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2329 if (kw
[XBM_FILE
].count
)
2331 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2334 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2336 /* In-memory XBM file. */
2337 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2345 /* Entries for `:width', `:height' and `:data' must be present. */
2346 if (!kw
[XBM_WIDTH
].count
2347 || !kw
[XBM_HEIGHT
].count
2348 || !kw
[XBM_DATA
].count
)
2351 data
= kw
[XBM_DATA
].value
;
2352 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2353 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2355 /* Check type of data, and width and height against contents of
2361 /* Number of elements of the vector must be >= height. */
2362 if (XVECTOR (data
)->size
< height
)
2365 /* Each string or bool-vector in data must be large enough
2366 for one line of the image. */
2367 for (i
= 0; i
< height
; ++i
)
2369 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2374 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2377 else if (BOOL_VECTOR_P (elt
))
2379 if (XBOOL_VECTOR (elt
)->size
< width
)
2386 else if (STRINGP (data
))
2389 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2392 else if (BOOL_VECTOR_P (data
))
2394 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2405 /* Scan a bitmap file. FP is the stream to read from. Value is
2406 either an enumerator from enum xbm_token, or a character for a
2407 single-character token, or 0 at end of file. If scanning an
2408 identifier, store the lexeme of the identifier in SVAL. If
2409 scanning a number, store its value in *IVAL. */
2412 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2418 /* Skip white space. */
2419 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2424 else if (isdigit (c
))
2426 int value
= 0, digit
;
2428 if (c
== '0' && *s
< end
)
2431 if (c
== 'x' || c
== 'X')
2438 else if (c
>= 'a' && c
<= 'f')
2439 digit
= c
- 'a' + 10;
2440 else if (c
>= 'A' && c
<= 'F')
2441 digit
= c
- 'A' + 10;
2444 value
= 16 * value
+ digit
;
2447 else if (isdigit (c
))
2451 && (c
= *(*s
)++, isdigit (c
)))
2452 value
= 8 * value
+ c
- '0';
2459 && (c
= *(*s
)++, isdigit (c
)))
2460 value
= 10 * value
+ c
- '0';
2468 else if (isalpha (c
) || c
== '_')
2472 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2479 else if (c
== '/' && **s
== '*')
2481 /* C-style comment. */
2483 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2497 /* Create a Windows bitmap from X bitmap data. */
2499 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2501 static unsigned char swap_nibble
[16]
2502 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2503 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2504 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2505 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2507 unsigned char *bits
, *p
;
2510 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2511 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2512 bits
= (unsigned char *) alloca (height
* w2
);
2513 memset (bits
, 0, height
* w2
);
2514 for (i
= 0; i
< height
; i
++)
2517 for (j
= 0; j
< w1
; j
++)
2519 /* Bitswap XBM bytes to match how Windows does things. */
2520 unsigned char c
= *data
++;
2521 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2522 | (swap_nibble
[(c
>>4) & 0xf]));
2525 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2531 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2532 COLORREF foreground
, COLORREF background
)
2534 HDC hdc
, old_img_dc
, new_img_dc
;
2535 HGDIOBJ old_prev
, new_prev
;
2538 hdc
= get_frame_dc (f
);
2539 old_img_dc
= CreateCompatibleDC (hdc
);
2540 new_img_dc
= CreateCompatibleDC (hdc
);
2541 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2542 release_frame_dc (f
, hdc
);
2543 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2544 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2545 /* Windows convention for mono bitmaps is black = background,
2546 white = foreground. */
2547 SetTextColor (new_img_dc
, background
);
2548 SetBkColor (new_img_dc
, foreground
);
2550 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2553 SelectObject (old_img_dc
, old_prev
);
2554 SelectObject (new_img_dc
, new_prev
);
2555 DeleteDC (old_img_dc
);
2556 DeleteDC (new_img_dc
);
2557 DeleteObject (img
->pixmap
);
2558 if (new_pixmap
== 0)
2559 fprintf (stderr
, "Failed to convert image to color.\n");
2561 img
->pixmap
= new_pixmap
;
2564 #define XBM_BIT_SHUFFLE(b) (~(b))
2568 #define XBM_BIT_SHUFFLE(b) (b)
2570 #endif /* HAVE_NTGUI */
2574 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2575 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2576 int non_default_colors
)
2580 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2582 /* If colors were specified, transfer the bitmap to a color one. */
2583 if (non_default_colors
)
2584 convert_mono_to_color_image (f
, img
, fg
, bg
);
2586 #elif defined (HAVE_NS)
2587 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2591 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2594 img
->width
, img
->height
,
2596 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2597 #endif /* !HAVE_NTGUI && !HAVE_NS */
2602 /* Replacement for XReadBitmapFileData which isn't available under old
2603 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2604 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2605 the image. Return in *DATA the bitmap data allocated with xmalloc.
2606 Value is non-zero if successful. DATA null means just test if
2607 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2608 is non-zero, inhibit the call to image_error when the image size is
2609 invalid (the bitmap remains unread). */
2612 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2613 int *width
, int *height
, char **data
,
2614 int inhibit_image_error
)
2616 unsigned char *s
= contents
;
2617 char buffer
[BUFSIZ
];
2620 int bytes_per_line
, i
, nbytes
;
2626 LA1 = xbm_scan (&s, end, buffer, &value)
2628 #define expect(TOKEN) \
2629 if (LA1 != (TOKEN)) \
2634 #define expect_ident(IDENT) \
2635 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2640 *width
= *height
= -1;
2643 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2645 /* Parse defines for width, height and hot-spots. */
2649 expect_ident ("define");
2650 expect (XBM_TK_IDENT
);
2652 if (LA1
== XBM_TK_NUMBER
)
2654 char *q
= strrchr (buffer
, '_');
2655 q
= q
? q
+ 1 : buffer
;
2656 if (strcmp (q
, "width") == 0)
2658 else if (strcmp (q
, "height") == 0)
2661 expect (XBM_TK_NUMBER
);
2664 if (!check_image_size (f
, *width
, *height
))
2666 if (!inhibit_image_error
)
2667 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2670 else if (data
== NULL
)
2673 /* Parse bits. Must start with `static'. */
2674 expect_ident ("static");
2675 if (LA1
== XBM_TK_IDENT
)
2677 if (strcmp (buffer
, "unsigned") == 0)
2680 expect_ident ("char");
2682 else if (strcmp (buffer
, "short") == 0)
2686 if (*width
% 16 && *width
% 16 < 9)
2689 else if (strcmp (buffer
, "char") == 0)
2697 expect (XBM_TK_IDENT
);
2703 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2704 nbytes
= bytes_per_line
* *height
;
2705 p
= *data
= (char *) xmalloc (nbytes
);
2709 for (i
= 0; i
< nbytes
; i
+= 2)
2712 expect (XBM_TK_NUMBER
);
2714 *p
++ = XBM_BIT_SHUFFLE (val
);
2715 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2716 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2718 if (LA1
== ',' || LA1
== '}')
2726 for (i
= 0; i
< nbytes
; ++i
)
2729 expect (XBM_TK_NUMBER
);
2731 *p
++ = XBM_BIT_SHUFFLE (val
);
2733 if (LA1
== ',' || LA1
== '}')
2758 /* Load XBM image IMG which will be displayed on frame F from buffer
2759 CONTENTS. END is the end of the buffer. Value is non-zero if
2763 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2770 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2774 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2775 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2776 int non_default_colors
= 0;
2779 xassert (img
->width
> 0 && img
->height
> 0);
2781 /* Get foreground and background colors, maybe allocate colors. */
2782 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2785 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2786 non_default_colors
= 1;
2788 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2791 background
= x_alloc_image_color (f
, img
, value
, background
);
2792 img
->background
= background
;
2793 img
->background_valid
= 1;
2794 non_default_colors
= 1;
2797 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2798 foreground
, background
,
2799 non_default_colors
);
2802 if (img
->pixmap
== NO_PIXMAP
)
2804 x_clear_image (f
, img
);
2805 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2811 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2817 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2820 xbm_file_p (Lisp_Object data
)
2823 return (STRINGP (data
)
2824 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2825 (SDATA (data
) + SBYTES (data
)),
2830 /* Fill image IMG which is used on frame F with pixmap data. Value is
2831 non-zero if successful. */
2834 xbm_load (struct frame
*f
, struct image
*img
)
2837 Lisp_Object file_name
;
2839 xassert (xbm_image_p (img
->spec
));
2841 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2842 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2843 if (STRINGP (file_name
))
2846 unsigned char *contents
;
2849 file
= x_find_image_file (file_name
);
2850 if (!STRINGP (file
))
2852 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2856 contents
= slurp_file (SSDATA (file
), &size
);
2857 if (contents
== NULL
)
2859 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2863 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2867 struct image_keyword fmt
[XBM_LAST
];
2869 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2870 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2871 int non_default_colors
= 0;
2874 int in_memory_file_p
= 0;
2876 /* See if data looks like an in-memory XBM file. */
2877 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2878 in_memory_file_p
= xbm_file_p (data
);
2880 /* Parse the image specification. */
2881 memcpy (fmt
, xbm_format
, sizeof fmt
);
2882 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2885 /* Get specified width, and height. */
2886 if (!in_memory_file_p
)
2888 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2889 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2890 xassert (img
->width
> 0 && img
->height
> 0);
2893 /* Get foreground and background colors, maybe allocate colors. */
2894 if (fmt
[XBM_FOREGROUND
].count
2895 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2897 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2899 non_default_colors
= 1;
2902 if (fmt
[XBM_BACKGROUND
].count
2903 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2905 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2907 non_default_colors
= 1;
2910 if (in_memory_file_p
)
2911 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2920 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2922 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2923 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2925 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2927 memcpy (p
, SDATA (line
), nbytes
);
2929 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2932 else if (STRINGP (data
))
2933 bits
= SSDATA (data
);
2935 bits
= (char *) XBOOL_VECTOR (data
)->data
;
2941 /* Windows mono bitmaps are reversed compared with X. */
2942 invertedBits
= bits
;
2943 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2945 bits
= (char *) alloca (nbytes
);
2946 for (i
= 0; i
< nbytes
; i
++)
2947 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2950 /* Create the pixmap. */
2952 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2953 foreground
, background
,
2954 non_default_colors
);
2959 image_error ("Unable to create pixmap for XBM image `%s'",
2961 x_clear_image (f
, img
);
2971 /***********************************************************************
2973 ***********************************************************************/
2975 #if defined (HAVE_XPM) || defined (HAVE_NS)
2977 static int xpm_image_p (Lisp_Object object
);
2978 static int xpm_load (struct frame
*f
, struct image
*img
);
2979 static int xpm_valid_color_symbols_p (Lisp_Object
);
2981 #endif /* HAVE_XPM || HAVE_NS */
2985 /* Indicate to xpm.h that we don't have Xlib. */
2987 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
2988 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
2989 #define XColor xpm_XColor
2990 #define XImage xpm_XImage
2991 #define Display xpm_Display
2992 #define PIXEL_ALREADY_TYPEDEFED
2993 #include "X11/xpm.h"
2998 #undef PIXEL_ALREADY_TYPEDEFED
3000 #include "X11/xpm.h"
3001 #endif /* HAVE_NTGUI */
3002 #endif /* HAVE_XPM */
3004 #if defined (HAVE_XPM) || defined (HAVE_NS)
3005 /* The symbol `xpm' identifying XPM-format images. */
3009 /* Indices of image specification fields in xpm_format, below. */
3011 enum xpm_keyword_index
3027 /* Vector of image_keyword structures describing the format
3028 of valid XPM image specifications. */
3030 static const struct image_keyword xpm_format
[XPM_LAST
] =
3032 {":type", IMAGE_SYMBOL_VALUE
, 1},
3033 {":file", IMAGE_STRING_VALUE
, 0},
3034 {":data", IMAGE_STRING_VALUE
, 0},
3035 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3036 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3037 {":relief", IMAGE_INTEGER_VALUE
, 0},
3038 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3039 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3040 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3041 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3042 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3045 /* Structure describing the image type XPM. */
3047 static struct image_type xpm_type
=
3056 #ifdef HAVE_X_WINDOWS
3058 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3059 functions for allocating image colors. Our own functions handle
3060 color allocation failures more gracefully than the ones on the XPM
3063 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3064 #define ALLOC_XPM_COLORS
3066 #endif /* HAVE_X_WINDOWS */
3068 #ifdef ALLOC_XPM_COLORS
3070 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3071 static void xpm_free_color_cache (void);
3072 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3073 static int xpm_color_bucket (char *);
3074 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3077 /* An entry in a hash table used to cache color definitions of named
3078 colors. This cache is necessary to speed up XPM image loading in
3079 case we do color allocations ourselves. Without it, we would need
3080 a call to XParseColor per pixel in the image. */
3082 struct xpm_cached_color
3084 /* Next in collision chain. */
3085 struct xpm_cached_color
*next
;
3087 /* Color definition (RGB and pixel color). */
3094 /* The hash table used for the color cache, and its bucket vector
3097 #define XPM_COLOR_CACHE_BUCKETS 1001
3098 struct xpm_cached_color
**xpm_color_cache
;
3100 /* Initialize the color cache. */
3103 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3105 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3106 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3107 memset (xpm_color_cache
, 0, nbytes
);
3108 init_color_table ();
3110 if (attrs
->valuemask
& XpmColorSymbols
)
3115 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3116 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3117 attrs
->colorsymbols
[i
].value
, &color
))
3119 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3121 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3126 /* Free the color cache. */
3129 xpm_free_color_cache (void)
3131 struct xpm_cached_color
*p
, *next
;
3134 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3135 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3141 xfree (xpm_color_cache
);
3142 xpm_color_cache
= NULL
;
3143 free_color_table ();
3146 /* Return the bucket index for color named COLOR_NAME in the color
3150 xpm_color_bucket (char *color_name
)
3155 for (s
= color_name
; *s
; ++s
)
3157 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3161 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3162 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3165 static struct xpm_cached_color
*
3166 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3169 struct xpm_cached_color
*p
;
3172 bucket
= xpm_color_bucket (color_name
);
3174 nbytes
= sizeof *p
+ strlen (color_name
);
3175 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3176 strcpy (p
->name
, color_name
);
3178 p
->next
= xpm_color_cache
[bucket
];
3179 xpm_color_cache
[bucket
] = p
;
3183 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3184 return the cached definition in *COLOR. Otherwise, make a new
3185 entry in the cache and allocate the color. Value is zero if color
3186 allocation failed. */
3189 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3191 struct xpm_cached_color
*p
;
3192 int h
= xpm_color_bucket (color_name
);
3194 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3195 if (strcmp (p
->name
, color_name
) == 0)
3200 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3203 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3205 p
= xpm_cache_color (f
, color_name
, color
, h
);
3207 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3208 with transparency, and it's useful. */
3209 else if (strcmp ("opaque", color_name
) == 0)
3211 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3212 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3213 p
= xpm_cache_color (f
, color_name
, color
, h
);
3220 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3221 CLOSURE is a pointer to the frame on which we allocate the
3222 color. Return in *COLOR the allocated color. Value is non-zero
3226 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3229 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3233 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3234 is a pointer to the frame on which we allocate the color. Value is
3235 non-zero if successful. */
3238 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3243 #endif /* ALLOC_XPM_COLORS */
3248 /* XPM library details. */
3250 DEF_IMGLIB_FN (void, XpmFreeAttributes
, (XpmAttributes
*));
3251 DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer
, (Display
*, char *, xpm_XImage
**,
3252 xpm_XImage
**, XpmAttributes
*));
3253 DEF_IMGLIB_FN (int, XpmReadFileToImage
, (Display
*, char *, xpm_XImage
**,
3254 xpm_XImage
**, XpmAttributes
*));
3255 DEF_IMGLIB_FN (void, XImageFree
, (xpm_XImage
*));
3258 init_xpm_functions (Lisp_Object libraries
)
3262 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3265 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3266 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3267 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3268 LOAD_IMGLIB_FN (library
, XImageFree
);
3272 #endif /* HAVE_NTGUI */
3275 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3276 for XPM images. Such a list must consist of conses whose car and
3280 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3282 while (CONSP (color_symbols
))
3284 Lisp_Object sym
= XCAR (color_symbols
);
3286 || !STRINGP (XCAR (sym
))
3287 || !STRINGP (XCDR (sym
)))
3289 color_symbols
= XCDR (color_symbols
);
3292 return NILP (color_symbols
);
3296 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3299 xpm_image_p (Lisp_Object object
)
3301 struct image_keyword fmt
[XPM_LAST
];
3302 memcpy (fmt
, xpm_format
, sizeof fmt
);
3303 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3304 /* Either `:file' or `:data' must be present. */
3305 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3306 /* Either no `:color-symbols' or it's a list of conses
3307 whose car and cdr are strings. */
3308 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3309 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3312 #endif /* HAVE_XPM || HAVE_NS */
3314 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3316 x_create_bitmap_from_xpm_data (struct frame
*f
, const char **bits
)
3318 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3320 XpmAttributes attrs
;
3321 Pixmap bitmap
, mask
;
3323 memset (&attrs
, 0, sizeof attrs
);
3325 attrs
.visual
= FRAME_X_VISUAL (f
);
3326 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3327 attrs
.valuemask
|= XpmVisual
;
3328 attrs
.valuemask
|= XpmColormap
;
3330 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3331 (char **) bits
, &bitmap
, &mask
, &attrs
);
3332 if (rc
!= XpmSuccess
)
3334 XpmFreeAttributes (&attrs
);
3338 id
= x_allocate_bitmap_record (f
);
3339 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3340 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3341 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3342 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3343 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3344 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3345 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3346 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3348 XpmFreeAttributes (&attrs
);
3351 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3353 /* Load image IMG which will be displayed on frame F. Value is
3354 non-zero if successful. */
3359 xpm_load (struct frame
*f
, struct image
*img
)
3362 XpmAttributes attrs
;
3363 Lisp_Object specified_file
, color_symbols
;
3366 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3367 #endif /* HAVE_NTGUI */
3369 /* Configure the XPM lib. Use the visual of frame F. Allocate
3370 close colors. Return colors allocated. */
3371 memset (&attrs
, 0, sizeof attrs
);
3374 attrs
.visual
= FRAME_X_VISUAL (f
);
3375 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3376 attrs
.valuemask
|= XpmVisual
;
3377 attrs
.valuemask
|= XpmColormap
;
3378 #endif /* HAVE_NTGUI */
3380 #ifdef ALLOC_XPM_COLORS
3381 /* Allocate colors with our own functions which handle
3382 failing color allocation more gracefully. */
3383 attrs
.color_closure
= f
;
3384 attrs
.alloc_color
= xpm_alloc_color
;
3385 attrs
.free_colors
= xpm_free_colors
;
3386 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3387 #else /* not ALLOC_XPM_COLORS */
3388 /* Let the XPM lib allocate colors. */
3389 attrs
.valuemask
|= XpmReturnAllocPixels
;
3390 #ifdef XpmAllocCloseColors
3391 attrs
.alloc_close_colors
= 1;
3392 attrs
.valuemask
|= XpmAllocCloseColors
;
3393 #else /* not XpmAllocCloseColors */
3394 attrs
.closeness
= 600;
3395 attrs
.valuemask
|= XpmCloseness
;
3396 #endif /* not XpmAllocCloseColors */
3397 #endif /* ALLOC_XPM_COLORS */
3399 /* If image specification contains symbolic color definitions, add
3400 these to `attrs'. */
3401 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3402 if (CONSP (color_symbols
))
3405 XpmColorSymbol
*xpm_syms
;
3408 attrs
.valuemask
|= XpmColorSymbols
;
3410 /* Count number of symbols. */
3411 attrs
.numsymbols
= 0;
3412 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3415 /* Allocate an XpmColorSymbol array. */
3416 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3417 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3418 memset (xpm_syms
, 0, size
);
3419 attrs
.colorsymbols
= xpm_syms
;
3421 /* Fill the color symbol array. */
3422 for (tail
= color_symbols
, i
= 0;
3424 ++i
, tail
= XCDR (tail
))
3428 char *empty_string
= (char *) "";
3430 if (!CONSP (XCAR (tail
)))
3432 xpm_syms
[i
].name
= empty_string
;
3433 xpm_syms
[i
].value
= empty_string
;
3436 name
= XCAR (XCAR (tail
));
3437 color
= XCDR (XCAR (tail
));
3440 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3441 strcpy (xpm_syms
[i
].name
, SSDATA (name
));
3444 xpm_syms
[i
].name
= empty_string
;
3445 if (STRINGP (color
))
3447 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3448 strcpy (xpm_syms
[i
].value
, SSDATA (color
));
3451 xpm_syms
[i
].value
= empty_string
;
3455 /* Create a pixmap for the image, either from a file, or from a
3456 string buffer containing data in the same format as an XPM file. */
3457 #ifdef ALLOC_XPM_COLORS
3458 xpm_init_color_cache (f
, &attrs
);
3461 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3465 HDC frame_dc
= get_frame_dc (f
);
3466 hdc
= CreateCompatibleDC (frame_dc
);
3467 release_frame_dc (f
, frame_dc
);
3469 #endif /* HAVE_NTGUI */
3471 if (STRINGP (specified_file
))
3473 Lisp_Object file
= x_find_image_file (specified_file
);
3474 if (!STRINGP (file
))
3476 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3477 #ifdef ALLOC_XPM_COLORS
3478 xpm_free_color_cache ();
3484 /* XpmReadFileToPixmap is not available in the Windows port of
3485 libxpm. But XpmReadFileToImage almost does what we want. */
3486 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3487 &xpm_image
, &xpm_mask
,
3490 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3491 SSDATA (file
), &img
->pixmap
, &img
->mask
,
3493 #endif /* HAVE_NTGUI */
3497 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3498 if (!STRINGP (buffer
))
3500 image_error ("Invalid image data `%s'", buffer
, Qnil
);
3501 #ifdef ALLOC_XPM_COLORS
3502 xpm_free_color_cache ();
3507 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3508 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3509 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3510 &xpm_image
, &xpm_mask
,
3513 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3515 &img
->pixmap
, &img
->mask
,
3517 #endif /* HAVE_NTGUI */
3520 if (rc
== XpmSuccess
)
3522 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3523 img
->colors
= colors_in_color_table (&img
->ncolors
);
3524 #else /* not ALLOC_XPM_COLORS */
3528 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3529 plus some duplicate attributes. */
3530 if (xpm_image
&& xpm_image
->bitmap
)
3532 img
->pixmap
= xpm_image
->bitmap
;
3533 /* XImageFree in libXpm frees XImage struct without destroying
3534 the bitmap, which is what we want. */
3535 fn_XImageFree (xpm_image
);
3537 if (xpm_mask
&& xpm_mask
->bitmap
)
3539 /* The mask appears to be inverted compared with what we expect.
3540 TODO: invert our expectations. See other places where we
3541 have to invert bits because our idea of masks is backwards. */
3543 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3545 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3546 SelectObject (hdc
, old_obj
);
3548 img
->mask
= xpm_mask
->bitmap
;
3549 fn_XImageFree (xpm_mask
);
3554 #endif /* HAVE_NTGUI */
3556 /* Remember allocated colors. */
3557 img
->ncolors
= attrs
.nalloc_pixels
;
3558 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3559 * sizeof *img
->colors
);
3560 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3562 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3563 #ifdef DEBUG_X_COLORS
3564 register_color (img
->colors
[i
]);
3567 #endif /* not ALLOC_XPM_COLORS */
3569 img
->width
= attrs
.width
;
3570 img
->height
= attrs
.height
;
3571 xassert (img
->width
> 0 && img
->height
> 0);
3573 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3575 fn_XpmFreeAttributes (&attrs
);
3577 XpmFreeAttributes (&attrs
);
3578 #endif /* HAVE_NTGUI */
3584 #endif /* HAVE_NTGUI */
3589 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3592 case XpmFileInvalid
:
3593 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3597 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3600 case XpmColorFailed
:
3601 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3605 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3610 #ifdef ALLOC_XPM_COLORS
3611 xpm_free_color_cache ();
3613 return rc
== XpmSuccess
;
3616 #endif /* HAVE_XPM */
3618 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3620 /* XPM support functions for NS where libxpm is not available.
3621 Only XPM version 3 (without any extensions) is supported. */
3623 static int xpm_scan (const unsigned char **, const unsigned char *,
3624 const unsigned char **, int *);
3625 static Lisp_Object xpm_make_color_table_v
3626 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3627 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3628 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3630 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3631 const unsigned char *, int);
3632 static Lisp_Object xpm_make_color_table_h
3633 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3634 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3635 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3637 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3638 const unsigned char *, int);
3639 static int xpm_str_to_color_key (const char *);
3640 static int xpm_load_image (struct frame
*, struct image
*,
3641 const unsigned char *, const unsigned char *);
3643 /* Tokens returned from xpm_scan. */
3652 /* Scan an XPM data and return a character (< 256) or a token defined
3653 by enum xpm_token above. *S and END are the start (inclusive) and
3654 the end (exclusive) addresses of the data, respectively. Advance
3655 *S while scanning. If token is either XPM_TK_IDENT or
3656 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3657 length of the corresponding token, respectively. */
3660 xpm_scan (const unsigned char **s
,
3661 const unsigned char *end
,
3662 const unsigned char **beg
,
3669 /* Skip white-space. */
3670 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3673 /* gnus-pointer.xpm uses '-' in its identifier.
3674 sb-dir-plus.xpm uses '+' in its identifier. */
3675 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3679 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3682 return XPM_TK_IDENT
;
3687 while (*s
< end
&& **s
!= '"')
3692 return XPM_TK_STRING
;
3696 if (*s
< end
&& **s
== '*')
3698 /* C-style comment. */
3702 while (*s
< end
&& *(*s
)++ != '*')
3705 while (*s
< end
&& **s
!= '/');
3719 /* Functions for color table lookup in XPM data. A key is a string
3720 specifying the color of each pixel in XPM data. A value is either
3721 an integer that specifies a pixel color, Qt that specifies
3722 transparency, or Qnil for the unspecified color. If the length of
3723 the key string is one, a vector is used as a table. Otherwise, a
3724 hash table is used. */
3727 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3728 const unsigned char *,
3731 Lisp_Object (**get_func
) (Lisp_Object
,
3732 const unsigned char *,
3735 *put_func
= xpm_put_color_table_v
;
3736 *get_func
= xpm_get_color_table_v
;
3737 return Fmake_vector (make_number (256), Qnil
);
3741 xpm_put_color_table_v (Lisp_Object color_table
,
3742 const unsigned char *chars_start
,
3746 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3750 xpm_get_color_table_v (Lisp_Object color_table
,
3751 const unsigned char *chars_start
,
3754 return XVECTOR (color_table
)->contents
[*chars_start
];
3758 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3759 const unsigned char *,
3762 Lisp_Object (**get_func
) (Lisp_Object
,
3763 const unsigned char *,
3766 *put_func
= xpm_put_color_table_h
;
3767 *get_func
= xpm_get_color_table_h
;
3768 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3769 make_float (DEFAULT_REHASH_SIZE
),
3770 make_float (DEFAULT_REHASH_THRESHOLD
),
3775 xpm_put_color_table_h (Lisp_Object color_table
,
3776 const unsigned char *chars_start
,
3780 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3782 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3784 hash_lookup (table
, chars
, &hash_code
);
3785 hash_put (table
, chars
, color
, hash_code
);
3789 xpm_get_color_table_h (Lisp_Object color_table
,
3790 const unsigned char *chars_start
,
3793 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3794 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3797 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3800 enum xpm_color_key
{
3808 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3811 xpm_str_to_color_key (const char *s
)
3816 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3818 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3824 xpm_load_image (struct frame
*f
,
3826 const unsigned char *contents
,
3827 const unsigned char *end
)
3829 const unsigned char *s
= contents
, *beg
, *str
;
3830 unsigned char buffer
[BUFSIZ
];
3831 int width
, height
, x
, y
;
3832 int num_colors
, chars_per_pixel
;
3834 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3835 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3836 Lisp_Object frame
, color_symbols
, color_table
;
3837 int best_key
, have_mask
= 0;
3838 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3841 LA1 = xpm_scan (&s, end, &beg, &len)
3843 #define expect(TOKEN) \
3844 if (LA1 != (TOKEN)) \
3849 #define expect_ident(IDENT) \
3850 if (LA1 == XPM_TK_IDENT \
3851 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3856 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3860 expect_ident ("static");
3861 expect_ident ("char");
3863 expect (XPM_TK_IDENT
);
3868 expect (XPM_TK_STRING
);
3871 memcpy (buffer
, beg
, len
);
3873 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3874 &num_colors
, &chars_per_pixel
) != 4
3875 || width
<= 0 || height
<= 0
3876 || num_colors
<= 0 || chars_per_pixel
<= 0)
3879 if (!check_image_size (f
, width
, height
))
3881 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3887 XSETFRAME (frame
, f
);
3888 if (!NILP (Fxw_display_color_p (frame
)))
3889 best_key
= XPM_COLOR_KEY_C
;
3890 else if (!NILP (Fx_display_grayscale_p (frame
)))
3891 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3892 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3894 best_key
= XPM_COLOR_KEY_M
;
3896 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3897 if (chars_per_pixel
== 1)
3898 color_table
= xpm_make_color_table_v (&put_color_table
,
3901 color_table
= xpm_make_color_table_h (&put_color_table
,
3904 while (num_colors
-- > 0)
3906 char *color
, *max_color
;
3907 int key
, next_key
, max_key
= 0;
3908 Lisp_Object symbol_color
= Qnil
, color_val
;
3911 expect (XPM_TK_STRING
);
3912 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3914 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3915 buffer
[len
- chars_per_pixel
] = '\0';
3917 str
= strtok (buffer
, " \t");
3920 key
= xpm_str_to_color_key (str
);
3925 color
= strtok (NULL
, " \t");
3929 while ((str
= strtok (NULL
, " \t")) != NULL
)
3931 next_key
= xpm_str_to_color_key (str
);
3934 color
[strlen (color
)] = ' ';
3937 if (key
== XPM_COLOR_KEY_S
)
3939 if (NILP (symbol_color
))
3940 symbol_color
= build_string (color
);
3942 else if (max_key
< key
&& key
<= best_key
)
3952 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3954 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3956 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3958 if (xstrcasecmp (SSDATA (XCDR (specified_color
)), "None") == 0)
3960 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3962 color_val
= make_number (cdef
.pixel
);
3965 if (NILP (color_val
) && max_key
> 0)
3967 if (xstrcasecmp (max_color
, "None") == 0)
3969 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3970 color_val
= make_number (cdef
.pixel
);
3972 if (!NILP (color_val
))
3973 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3978 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3979 &ximg
, &img
->pixmap
)
3981 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3982 &mask_img
, &img
->mask
)
3986 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3990 for (y
= 0; y
< height
; y
++)
3992 expect (XPM_TK_STRING
);
3994 if (len
< width
* chars_per_pixel
)
3996 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3998 Lisp_Object color_val
=
3999 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4001 XPutPixel (ximg
, x
, y
,
4002 (INTEGERP (color_val
) ? XINT (color_val
)
4003 : FRAME_FOREGROUND_PIXEL (f
)));
4005 XPutPixel (mask_img
, x
, y
,
4006 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4007 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4009 if (EQ (color_val
, Qt
))
4010 ns_set_alpha (ximg
, x
, y
, 0);
4018 img
->height
= height
;
4020 /* Maybe fill in the background field while we have ximg handy. */
4021 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4022 IMAGE_BACKGROUND (img
, f
, ximg
);
4024 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4025 x_destroy_x_image (ximg
);
4029 /* Fill in the background_transparent field while we have the
4031 image_background_transparent (img
, f
, mask_img
);
4033 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4034 x_destroy_x_image (mask_img
);
4038 x_destroy_x_image (mask_img
);
4039 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4040 img
->mask
= NO_PIXMAP
;
4046 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4048 x_destroy_x_image (ximg
);
4049 x_destroy_x_image (mask_img
);
4050 x_clear_image (f
, img
);
4059 xpm_load (struct frame
*f
,
4063 Lisp_Object file_name
;
4065 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4066 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4067 if (STRINGP (file_name
))
4070 unsigned char *contents
;
4073 file
= x_find_image_file (file_name
);
4074 if (!STRINGP (file
))
4076 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4080 contents
= slurp_file (SDATA (file
), &size
);
4081 if (contents
== NULL
)
4083 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4087 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4094 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4095 if (!STRINGP (data
))
4097 image_error ("Invalid image data `%s'", data
, Qnil
);
4100 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4101 SDATA (data
) + SBYTES (data
));
4107 #endif /* HAVE_NS && !HAVE_XPM */
4111 /***********************************************************************
4113 ***********************************************************************/
4115 #ifdef COLOR_TABLE_SUPPORT
4117 /* An entry in the color table mapping an RGB color to a pixel color. */
4122 unsigned long pixel
;
4124 /* Next in color table collision list. */
4125 struct ct_color
*next
;
4128 /* The bucket vector size to use. Must be prime. */
4132 /* Value is a hash of the RGB color given by R, G, and B. */
4134 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4136 /* The color hash table. */
4138 struct ct_color
**ct_table
;
4140 /* Number of entries in the color table. */
4142 int ct_colors_allocated
;
4144 /* Initialize the color table. */
4147 init_color_table (void)
4149 int size
= CT_SIZE
* sizeof (*ct_table
);
4150 ct_table
= (struct ct_color
**) xmalloc (size
);
4151 memset (ct_table
, 0, size
);
4152 ct_colors_allocated
= 0;
4156 /* Free memory associated with the color table. */
4159 free_color_table (void)
4162 struct ct_color
*p
, *next
;
4164 for (i
= 0; i
< CT_SIZE
; ++i
)
4165 for (p
= ct_table
[i
]; p
; p
= next
)
4176 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4177 entry for that color already is in the color table, return the
4178 pixel color of that entry. Otherwise, allocate a new color for R,
4179 G, B, and make an entry in the color table. */
4181 static unsigned long
4182 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4184 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4185 int i
= hash
% CT_SIZE
;
4187 Display_Info
*dpyinfo
;
4189 /* Handle TrueColor visuals specially, which improves performance by
4190 two orders of magnitude. Freeing colors on TrueColor visuals is
4191 a nop, and pixel colors specify RGB values directly. See also
4192 the Xlib spec, chapter 3.1. */
4193 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4194 if (dpyinfo
->red_bits
> 0)
4196 unsigned long pr
, pg
, pb
;
4198 /* Apply gamma-correction like normal color allocation does. */
4202 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4203 gamma_correct (f
, &color
);
4204 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4207 /* Scale down RGB values to the visual's bits per RGB, and shift
4208 them to the right position in the pixel color. Note that the
4209 original RGB values are 16-bit values, as usual in X. */
4210 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4211 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4212 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4214 /* Assemble the pixel color. */
4215 return pr
| pg
| pb
;
4218 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4219 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4225 #ifdef HAVE_X_WINDOWS
4234 cmap
= FRAME_X_COLORMAP (f
);
4235 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4238 ++ct_colors_allocated
;
4239 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4243 p
->pixel
= color
.pixel
;
4244 p
->next
= ct_table
[i
];
4248 return FRAME_FOREGROUND_PIXEL (f
);
4253 color
= PALETTERGB (r
, g
, b
);
4255 color
= RGB_TO_ULONG (r
, g
, b
);
4256 #endif /* HAVE_NTGUI */
4257 ++ct_colors_allocated
;
4258 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4263 p
->next
= ct_table
[i
];
4265 #endif /* HAVE_X_WINDOWS */
4273 /* Look up pixel color PIXEL which is used on frame F in the color
4274 table. If not already present, allocate it. Value is PIXEL. */
4276 static unsigned long
4277 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4279 int i
= pixel
% CT_SIZE
;
4282 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4283 if (p
->pixel
== pixel
)
4292 #ifdef HAVE_X_WINDOWS
4293 cmap
= FRAME_X_COLORMAP (f
);
4294 color
.pixel
= pixel
;
4295 x_query_color (f
, &color
);
4296 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4299 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4300 color
.pixel
= pixel
;
4301 XQueryColor (NULL
, cmap
, &color
);
4302 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4304 #endif /* HAVE_X_WINDOWS */
4308 ++ct_colors_allocated
;
4310 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4315 p
->next
= ct_table
[i
];
4319 return FRAME_FOREGROUND_PIXEL (f
);
4325 /* Value is a vector of all pixel colors contained in the color table,
4326 allocated via xmalloc. Set *N to the number of colors. */
4328 static unsigned long *
4329 colors_in_color_table (int *n
)
4333 unsigned long *colors
;
4335 if (ct_colors_allocated
== 0)
4342 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4344 *n
= ct_colors_allocated
;
4346 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4347 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4348 colors
[j
++] = p
->pixel
;
4354 #else /* COLOR_TABLE_SUPPORT */
4356 static unsigned long
4357 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4359 unsigned long pixel
;
4362 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4363 #endif /* HAVE_NTGUI */
4366 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4367 #endif /* HAVE_NS */
4372 init_color_table (void)
4375 #endif /* COLOR_TABLE_SUPPORT */
4378 /***********************************************************************
4380 ***********************************************************************/
4382 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4383 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4384 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4387 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4388 #endif /* HAVE_NTGUI */
4390 /* Edge detection matrices for different edge-detection
4393 static int emboss_matrix
[9] = {
4395 2, -1, 0, /* y - 1 */
4397 0, 1, -2 /* y + 1 */
4400 static int laplace_matrix
[9] = {
4402 1, 0, 0, /* y - 1 */
4404 0, 0, -1 /* y + 1 */
4407 /* Value is the intensity of the color whose red/green/blue values
4410 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4413 /* On frame F, return an array of XColor structures describing image
4414 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4415 non-zero means also fill the red/green/blue members of the XColor
4416 structures. Value is a pointer to the array of XColors structures,
4417 allocated with xmalloc; it must be freed by the caller. */
4420 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4424 XImagePtr_or_DC ximg
;
4428 #endif /* HAVE_NTGUI */
4430 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4433 /* Get the X image IMG->pixmap. */
4434 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4435 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4437 /* Load the image into a memory device context. */
4438 hdc
= get_frame_dc (f
);
4439 ximg
= CreateCompatibleDC (hdc
);
4440 release_frame_dc (f
, hdc
);
4441 prev
= SelectObject (ximg
, img
->pixmap
);
4442 #endif /* HAVE_NTGUI */
4444 /* Fill the `pixel' members of the XColor array. I wished there
4445 were an easy and portable way to circumvent XGetPixel. */
4447 for (y
= 0; y
< img
->height
; ++y
)
4451 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4452 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4453 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4455 x_query_colors (f
, row
, img
->width
);
4459 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4461 /* W32_TODO: palette support needed here? */
4462 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4465 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4466 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4467 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4470 #endif /* HAVE_X_WINDOWS */
4473 Destroy_Image (ximg
, prev
);
4480 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4481 created with CreateDIBSection, with the pointer to the bit values
4482 stored in ximg->data. */
4485 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4487 int width
= ximg
->info
.bmiHeader
.biWidth
;
4488 unsigned char * pixel
;
4490 /* True color images. */
4491 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4493 int rowbytes
= width
* 3;
4494 /* Ensure scanlines are aligned on 4 byte boundaries. */
4496 rowbytes
+= 4 - (rowbytes
% 4);
4498 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4499 /* Windows bitmaps are in BGR order. */
4500 *pixel
= GetBValue (color
);
4501 *(pixel
+ 1) = GetGValue (color
);
4502 *(pixel
+ 2) = GetRValue (color
);
4504 /* Monochrome images. */
4505 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4507 int rowbytes
= width
/ 8;
4508 /* Ensure scanlines are aligned on 4 byte boundaries. */
4510 rowbytes
+= 4 - (rowbytes
% 4);
4511 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4512 /* Filter out palette info. */
4513 if (color
& 0x00ffffff)
4514 *pixel
= *pixel
| (1 << x
% 8);
4516 *pixel
= *pixel
& ~(1 << x
% 8);
4519 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4522 #endif /* HAVE_NTGUI */
4524 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4525 RGB members are set. F is the frame on which this all happens.
4526 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4529 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4532 XImagePtr oimg
= NULL
;
4536 init_color_table ();
4538 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4541 for (y
= 0; y
< img
->height
; ++y
)
4542 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4544 unsigned long pixel
;
4545 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4546 XPutPixel (oimg
, x
, y
, pixel
);
4550 x_clear_image_1 (f
, img
, 1, 0, 1);
4552 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4553 x_destroy_x_image (oimg
);
4554 img
->pixmap
= pixmap
;
4555 #ifdef COLOR_TABLE_SUPPORT
4556 img
->colors
= colors_in_color_table (&img
->ncolors
);
4557 free_color_table ();
4558 #endif /* COLOR_TABLE_SUPPORT */
4562 /* On frame F, perform edge-detection on image IMG.
4564 MATRIX is a nine-element array specifying the transformation
4565 matrix. See emboss_matrix for an example.
4567 COLOR_ADJUST is a color adjustment added to each pixel of the
4571 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4573 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4577 for (i
= sum
= 0; i
< 9; ++i
)
4578 sum
+= eabs (matrix
[i
]);
4580 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4582 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4584 for (y
= 0; y
< img
->height
; ++y
)
4586 p
= COLOR (new, 0, y
);
4587 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4588 p
= COLOR (new, img
->width
- 1, y
);
4589 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4592 for (x
= 1; x
< img
->width
- 1; ++x
)
4594 p
= COLOR (new, x
, 0);
4595 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4596 p
= COLOR (new, x
, img
->height
- 1);
4597 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4600 for (y
= 1; y
< img
->height
- 1; ++y
)
4602 p
= COLOR (new, 1, y
);
4604 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4606 int r
, g
, b
, yy
, xx
;
4609 for (yy
= y
- 1; yy
< y
+ 2; ++yy
)
4610 for (xx
= x
- 1; xx
< x
+ 2; ++xx
, ++i
)
4613 XColor
*t
= COLOR (colors
, xx
, yy
);
4614 r
+= matrix
[i
] * t
->red
;
4615 g
+= matrix
[i
] * t
->green
;
4616 b
+= matrix
[i
] * t
->blue
;
4619 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4620 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4621 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4622 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4627 x_from_xcolors (f
, img
, new);
4633 /* Perform the pre-defined `emboss' edge-detection on image IMG
4637 x_emboss (struct frame
*f
, struct image
*img
)
4639 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4643 /* Transform image IMG which is used on frame F with a Laplace
4644 edge-detection algorithm. The result is an image that can be used
4645 to draw disabled buttons, for example. */
4648 x_laplace (struct frame
*f
, struct image
*img
)
4650 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4654 /* Perform edge-detection on image IMG on frame F, with specified
4655 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4657 MATRIX must be either
4659 - a list of at least 9 numbers in row-major form
4660 - a vector of at least 9 numbers
4662 COLOR_ADJUST nil means use a default; otherwise it must be a
4666 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4667 Lisp_Object color_adjust
)
4675 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4676 ++i
, matrix
= XCDR (matrix
))
4677 trans
[i
] = XFLOATINT (XCAR (matrix
));
4679 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4681 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4682 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4685 if (NILP (color_adjust
))
4686 color_adjust
= make_number (0xffff / 2);
4688 if (i
== 9 && NUMBERP (color_adjust
))
4689 x_detect_edges (f
, img
, trans
, XFLOATINT (color_adjust
));
4693 /* Transform image IMG on frame F so that it looks disabled. */
4696 x_disable_image (struct frame
*f
, struct image
*img
)
4698 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4700 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4702 int n_planes
= dpyinfo
->n_planes
;
4703 #endif /* HAVE_NTGUI */
4707 /* Color (or grayscale). Convert to gray, and equalize. Just
4708 drawing such images with a stipple can look very odd, so
4709 we're using this method instead. */
4710 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4712 const int h
= 15000;
4713 const int l
= 30000;
4715 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4719 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4720 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4721 p
->red
= p
->green
= p
->blue
= i2
;
4724 x_from_xcolors (f
, img
, colors
);
4727 /* Draw a cross over the disabled image, if we must or if we
4729 if (n_planes
< 2 || cross_disabled_images
)
4732 Display
*dpy
= FRAME_X_DISPLAY (f
);
4735 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4737 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4739 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4740 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4741 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4742 img
->width
- 1, img
->height
- 1);
4743 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4749 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4750 XSetForeground (dpy
, gc
, MaskForeground (f
));
4751 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4752 img
->width
- 1, img
->height
- 1);
4753 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4757 #endif /* !HAVE_NS */
4762 hdc
= get_frame_dc (f
);
4763 bmpdc
= CreateCompatibleDC (hdc
);
4764 release_frame_dc (f
, hdc
);
4766 prev
= SelectObject (bmpdc
, img
->pixmap
);
4768 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4769 MoveToEx (bmpdc
, 0, 0, NULL
);
4770 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4771 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4772 LineTo (bmpdc
, img
->width
- 1, 0);
4776 SelectObject (bmpdc
, img
->mask
);
4777 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4778 MoveToEx (bmpdc
, 0, 0, NULL
);
4779 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4780 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4781 LineTo (bmpdc
, img
->width
- 1, 0);
4783 SelectObject (bmpdc
, prev
);
4785 #endif /* HAVE_NTGUI */
4790 /* Build a mask for image IMG which is used on frame F. FILE is the
4791 name of an image file, for error messages. HOW determines how to
4792 determine the background color of IMG. If it is a list '(R G B)',
4793 with R, G, and B being integers >= 0, take that as the color of the
4794 background. Otherwise, determine the background color of IMG
4795 heuristically. Value is non-zero if successful. */
4798 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4800 XImagePtr_or_DC ximg
;
4808 #endif /* HAVE_NTGUI */
4809 int x
, y
, rc
, use_img_background
;
4810 unsigned long bg
= 0;
4814 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4815 img
->mask
= NO_PIXMAP
;
4816 img
->background_transparent_valid
= 0;
4821 /* Create an image and pixmap serving as mask. */
4822 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4823 &mask_img
, &img
->mask
);
4826 #endif /* !HAVE_NS */
4828 /* Get the X image of IMG->pixmap. */
4829 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4830 img
->width
, img
->height
,
4833 /* Create the bit array serving as mask. */
4834 row_width
= (img
->width
+ 7) / 8;
4835 mask_img
= xmalloc (row_width
* img
->height
);
4836 memset (mask_img
, 0, row_width
* img
->height
);
4838 /* Create a memory device context for IMG->pixmap. */
4839 frame_dc
= get_frame_dc (f
);
4840 ximg
= CreateCompatibleDC (frame_dc
);
4841 release_frame_dc (f
, frame_dc
);
4842 prev
= SelectObject (ximg
, img
->pixmap
);
4843 #endif /* HAVE_NTGUI */
4845 /* Determine the background color of ximg. If HOW is `(R G B)'
4846 take that as color. Otherwise, use the image's background color. */
4847 use_img_background
= 1;
4853 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4855 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4859 if (i
== 3 && NILP (how
))
4861 char color_name
[30];
4862 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4865 0x00ffffff & /* Filter out palette info. */
4866 #endif /* HAVE_NTGUI */
4867 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4868 use_img_background
= 0;
4872 if (use_img_background
)
4873 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4875 /* Set all bits in mask_img to 1 whose color in ximg is different
4876 from the background color bg. */
4878 for (y
= 0; y
< img
->height
; ++y
)
4879 for (x
= 0; x
< img
->width
; ++x
)
4881 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4882 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4884 if (XGetPixel (ximg
, x
, y
) == bg
)
4885 ns_set_alpha (ximg
, x
, y
, 0);
4886 #endif /* HAVE_NS */
4888 /* Fill in the background_transparent field while we have the mask handy. */
4889 image_background_transparent (img
, f
, mask_img
);
4891 /* Put mask_img into img->mask. */
4892 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4893 x_destroy_x_image (mask_img
);
4894 #endif /* !HAVE_NS */
4896 for (y
= 0; y
< img
->height
; ++y
)
4897 for (x
= 0; x
< img
->width
; ++x
)
4899 COLORREF p
= GetPixel (ximg
, x
, y
);
4901 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4904 /* Create the mask image. */
4905 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4907 /* Fill in the background_transparent field while we have the mask handy. */
4908 SelectObject (ximg
, img
->mask
);
4909 image_background_transparent (img
, f
, ximg
);
4911 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4913 #endif /* HAVE_NTGUI */
4915 Destroy_Image (ximg
, prev
);
4921 /***********************************************************************
4922 PBM (mono, gray, color)
4923 ***********************************************************************/
4925 static int pbm_image_p (Lisp_Object object
);
4926 static int pbm_load (struct frame
*f
, struct image
*img
);
4927 static int pbm_scan_number (unsigned char **, unsigned char *);
4929 /* The symbol `pbm' identifying images of this type. */
4933 /* Indices of image specification fields in gs_format, below. */
4935 enum pbm_keyword_index
4951 /* Vector of image_keyword structures describing the format
4952 of valid user-defined image specifications. */
4954 static const struct image_keyword pbm_format
[PBM_LAST
] =
4956 {":type", IMAGE_SYMBOL_VALUE
, 1},
4957 {":file", IMAGE_STRING_VALUE
, 0},
4958 {":data", IMAGE_STRING_VALUE
, 0},
4959 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4960 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4961 {":relief", IMAGE_INTEGER_VALUE
, 0},
4962 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4963 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4964 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4965 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4966 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4969 /* Structure describing the image type `pbm'. */
4971 static struct image_type pbm_type
=
4981 /* Return non-zero if OBJECT is a valid PBM image specification. */
4984 pbm_image_p (Lisp_Object object
)
4986 struct image_keyword fmt
[PBM_LAST
];
4988 memcpy (fmt
, pbm_format
, sizeof fmt
);
4990 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4993 /* Must specify either :data or :file. */
4994 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4998 /* Scan a decimal number from *S and return it. Advance *S while
4999 reading the number. END is the end of the string. Value is -1 at
5003 pbm_scan_number (unsigned char **s
, unsigned char *end
)
5005 int c
= 0, val
= -1;
5009 /* Skip white-space. */
5010 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5015 /* Skip comment to end of line. */
5016 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5019 else if (isdigit (c
))
5021 /* Read decimal number. */
5023 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5024 val
= 10 * val
+ c
- '0';
5036 #if 0 /* Unused. ++kfs */
5038 /* Read FILE into memory. Value is a pointer to a buffer allocated
5039 with xmalloc holding FILE's contents. Value is null if an error
5040 occurred. *SIZE is set to the size of the file. */
5043 pbm_read_file (file
, size
)
5051 if (stat (SDATA (file
), &st
) == 0
5052 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5053 && (buf
= (char *) xmalloc (st
.st_size
),
5054 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5073 #endif /* HAVE_NTGUI */
5075 /* Load PBM image IMG for use on frame F. */
5078 pbm_load (struct frame
*f
, struct image
*img
)
5081 int width
, height
, max_color_idx
= 0;
5083 Lisp_Object file
, specified_file
;
5084 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5085 unsigned char *contents
= NULL
;
5086 unsigned char *end
, *p
;
5089 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5091 if (STRINGP (specified_file
))
5093 file
= x_find_image_file (specified_file
);
5094 if (!STRINGP (file
))
5096 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5100 contents
= slurp_file (SSDATA (file
), &size
);
5101 if (contents
== NULL
)
5103 image_error ("Error reading `%s'", file
, Qnil
);
5108 end
= contents
+ size
;
5113 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5114 if (!STRINGP (data
))
5116 image_error ("Invalid image data `%s'", data
, Qnil
);
5120 end
= p
+ SBYTES (data
);
5123 /* Check magic number. */
5124 if (end
- p
< 2 || *p
++ != 'P')
5126 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5135 raw_p
= 0, type
= PBM_MONO
;
5139 raw_p
= 0, type
= PBM_GRAY
;
5143 raw_p
= 0, type
= PBM_COLOR
;
5147 raw_p
= 1, type
= PBM_MONO
;
5151 raw_p
= 1, type
= PBM_GRAY
;
5155 raw_p
= 1, type
= PBM_COLOR
;
5159 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5163 /* Read width, height, maximum color-component. Characters
5164 starting with `#' up to the end of a line are ignored. */
5165 width
= pbm_scan_number (&p
, end
);
5166 height
= pbm_scan_number (&p
, end
);
5168 if (type
!= PBM_MONO
)
5170 max_color_idx
= pbm_scan_number (&p
, end
);
5171 if (max_color_idx
> 65535 || max_color_idx
< 0)
5173 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5178 if (!check_image_size (f
, width
, height
))
5180 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5184 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5185 &ximg
, &img
->pixmap
))
5188 /* Initialize the color hash table. */
5189 init_color_table ();
5191 if (type
== PBM_MONO
)
5194 struct image_keyword fmt
[PBM_LAST
];
5195 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5196 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5198 /* Parse the image specification. */
5199 memcpy (fmt
, pbm_format
, sizeof fmt
);
5200 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5202 /* Get foreground and background colors, maybe allocate colors. */
5203 if (fmt
[PBM_FOREGROUND
].count
5204 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5205 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5206 if (fmt
[PBM_BACKGROUND
].count
5207 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5209 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5210 img
->background
= bg
;
5211 img
->background_valid
= 1;
5214 for (y
= 0; y
< height
; ++y
)
5215 for (x
= 0; x
< width
; ++x
)
5223 x_destroy_x_image (ximg
);
5224 x_clear_image (f
, img
);
5225 image_error ("Invalid image size in image `%s'",
5235 g
= pbm_scan_number (&p
, end
);
5237 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5242 int expected_size
= height
* width
;
5243 if (max_color_idx
> 255)
5245 if (type
== PBM_COLOR
)
5248 if (raw_p
&& p
+ expected_size
> end
)
5250 x_destroy_x_image (ximg
);
5251 x_clear_image (f
, img
);
5252 image_error ("Invalid image size in image `%s'",
5257 for (y
= 0; y
< height
; ++y
)
5258 for (x
= 0; x
< width
; ++x
)
5262 if (type
== PBM_GRAY
&& raw_p
)
5265 if (max_color_idx
> 255)
5266 r
= g
= b
= r
* 256 + *p
++;
5268 else if (type
== PBM_GRAY
)
5269 r
= g
= b
= pbm_scan_number (&p
, end
);
5273 if (max_color_idx
> 255)
5276 if (max_color_idx
> 255)
5279 if (max_color_idx
> 255)
5284 r
= pbm_scan_number (&p
, end
);
5285 g
= pbm_scan_number (&p
, end
);
5286 b
= pbm_scan_number (&p
, end
);
5289 if (r
< 0 || g
< 0 || b
< 0)
5291 x_destroy_x_image (ximg
);
5292 image_error ("Invalid pixel value in image `%s'",
5297 /* RGB values are now in the range 0..max_color_idx.
5298 Scale this to the range 0..0xffff supported by X. */
5299 r
= (double) r
* 65535 / max_color_idx
;
5300 g
= (double) g
* 65535 / max_color_idx
;
5301 b
= (double) b
* 65535 / max_color_idx
;
5302 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5306 #ifdef COLOR_TABLE_SUPPORT
5307 /* Store in IMG->colors the colors allocated for the image, and
5308 free the color table. */
5309 img
->colors
= colors_in_color_table (&img
->ncolors
);
5310 free_color_table ();
5311 #endif /* COLOR_TABLE_SUPPORT */
5314 img
->height
= height
;
5316 /* Maybe fill in the background field while we have ximg handy. */
5318 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5319 /* Casting avoids a GCC warning. */
5320 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5322 /* Put the image into a pixmap. */
5323 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5324 x_destroy_x_image (ximg
);
5326 /* X and W32 versions did it here, MAC version above. ++kfs
5328 img->height = height; */
5335 /***********************************************************************
5337 ***********************************************************************/
5339 #if defined (HAVE_PNG) || defined (HAVE_NS)
5341 /* Function prototypes. */
5343 static int png_image_p (Lisp_Object object
);
5344 static int png_load (struct frame
*f
, struct image
*img
);
5346 /* The symbol `png' identifying images of this type. */
5350 /* Indices of image specification fields in png_format, below. */
5352 enum png_keyword_index
5367 /* Vector of image_keyword structures describing the format
5368 of valid user-defined image specifications. */
5370 static const struct image_keyword png_format
[PNG_LAST
] =
5372 {":type", IMAGE_SYMBOL_VALUE
, 1},
5373 {":data", IMAGE_STRING_VALUE
, 0},
5374 {":file", IMAGE_STRING_VALUE
, 0},
5375 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5376 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5377 {":relief", IMAGE_INTEGER_VALUE
, 0},
5378 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5379 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5380 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5381 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5384 /* Structure describing the image type `png'. */
5386 static struct image_type png_type
=
5395 /* Return non-zero if OBJECT is a valid PNG image specification. */
5398 png_image_p (Lisp_Object object
)
5400 struct image_keyword fmt
[PNG_LAST
];
5401 memcpy (fmt
, png_format
, sizeof fmt
);
5403 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5406 /* Must specify either the :data or :file keyword. */
5407 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5410 #endif /* HAVE_PNG || HAVE_NS */
5416 /* PNG library details. */
5418 DEF_IMGLIB_FN (png_voidp
, png_get_io_ptr
, (png_structp
));
5419 DEF_IMGLIB_FN (int, png_sig_cmp
, (png_bytep
, png_size_t
, png_size_t
));
5420 DEF_IMGLIB_FN (png_structp
, png_create_read_struct
, (png_const_charp
, png_voidp
,
5421 png_error_ptr
, png_error_ptr
));
5422 DEF_IMGLIB_FN (png_infop
, png_create_info_struct
, (png_structp
));
5423 DEF_IMGLIB_FN (void, png_destroy_read_struct
, (png_structpp
, png_infopp
, png_infopp
));
5424 DEF_IMGLIB_FN (void, png_set_read_fn
, (png_structp
, png_voidp
, png_rw_ptr
));
5425 DEF_IMGLIB_FN (void, png_set_sig_bytes
, (png_structp
, int));
5426 DEF_IMGLIB_FN (void, png_read_info
, (png_structp
, png_infop
));
5427 DEF_IMGLIB_FN (png_uint_32
, png_get_IHDR
, (png_structp
, png_infop
,
5428 png_uint_32
*, png_uint_32
*,
5429 int *, int *, int *, int *, int *));
5430 DEF_IMGLIB_FN (png_uint_32
, png_get_valid
, (png_structp
, png_infop
, png_uint_32
));
5431 DEF_IMGLIB_FN (void, png_set_strip_16
, (png_structp
));
5432 DEF_IMGLIB_FN (void, png_set_expand
, (png_structp
));
5433 DEF_IMGLIB_FN (void, png_set_gray_to_rgb
, (png_structp
));
5434 DEF_IMGLIB_FN (void, png_set_background
, (png_structp
, png_color_16p
,
5436 DEF_IMGLIB_FN (png_uint_32
, png_get_bKGD
, (png_structp
, png_infop
, png_color_16p
*));
5437 DEF_IMGLIB_FN (void, png_read_update_info
, (png_structp
, png_infop
));
5438 DEF_IMGLIB_FN (png_byte
, png_get_channels
, (png_structp
, png_infop
));
5439 DEF_IMGLIB_FN (png_size_t
, png_get_rowbytes
, (png_structp
, png_infop
));
5440 DEF_IMGLIB_FN (void, png_read_image
, (png_structp
, png_bytepp
));
5441 DEF_IMGLIB_FN (void, png_read_end
, (png_structp
, png_infop
));
5442 DEF_IMGLIB_FN (void, png_error
, (png_structp
, png_const_charp
));
5444 #if (PNG_LIBPNG_VER >= 10500)
5445 DEF_IMGLIB_FN (void, png_longjmp
, (png_structp
, int));
5446 DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn
, (png_structp
, png_longjmp_ptr
, size_t));
5447 #endif /* libpng version >= 1.5 */
5450 init_png_functions (Lisp_Object libraries
)
5454 /* Try loading libpng under probable names. */
5455 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5458 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5459 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5460 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5461 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5462 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5463 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5464 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5465 LOAD_IMGLIB_FN (library
, png_read_info
);
5466 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5467 LOAD_IMGLIB_FN (library
, png_get_valid
);
5468 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5469 LOAD_IMGLIB_FN (library
, png_set_expand
);
5470 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5471 LOAD_IMGLIB_FN (library
, png_set_background
);
5472 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5473 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5474 LOAD_IMGLIB_FN (library
, png_get_channels
);
5475 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5476 LOAD_IMGLIB_FN (library
, png_read_image
);
5477 LOAD_IMGLIB_FN (library
, png_read_end
);
5478 LOAD_IMGLIB_FN (library
, png_error
);
5480 #if (PNG_LIBPNG_VER >= 10500)
5481 LOAD_IMGLIB_FN (library
, png_longjmp
);
5482 LOAD_IMGLIB_FN (library
, png_set_longjmp_fn
);
5483 #endif /* libpng version >= 1.5 */
5489 #define fn_png_get_io_ptr png_get_io_ptr
5490 #define fn_png_sig_cmp png_sig_cmp
5491 #define fn_png_create_read_struct png_create_read_struct
5492 #define fn_png_create_info_struct png_create_info_struct
5493 #define fn_png_destroy_read_struct png_destroy_read_struct
5494 #define fn_png_set_read_fn png_set_read_fn
5495 #define fn_png_set_sig_bytes png_set_sig_bytes
5496 #define fn_png_read_info png_read_info
5497 #define fn_png_get_IHDR png_get_IHDR
5498 #define fn_png_get_valid png_get_valid
5499 #define fn_png_set_strip_16 png_set_strip_16
5500 #define fn_png_set_expand png_set_expand
5501 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5502 #define fn_png_set_background png_set_background
5503 #define fn_png_get_bKGD png_get_bKGD
5504 #define fn_png_read_update_info png_read_update_info
5505 #define fn_png_get_channels png_get_channels
5506 #define fn_png_get_rowbytes png_get_rowbytes
5507 #define fn_png_read_image png_read_image
5508 #define fn_png_read_end png_read_end
5509 #define fn_png_error png_error
5511 #if (PNG_LIBPNG_VER >= 10500)
5512 #define fn_png_longjmp png_longjmp
5513 #define fn_png_set_longjmp_fn png_set_longjmp_fn
5514 #endif /* libpng version >= 1.5 */
5516 #endif /* HAVE_NTGUI */
5519 #if (PNG_LIBPNG_VER < 10500)
5520 #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1))
5521 #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf)
5523 /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */
5524 #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1))
5525 #define PNG_JMPBUF(ptr) \
5526 (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf)))
5529 /* Error and warning handlers installed when the PNG library
5532 static void my_png_error (png_struct
*, const char *) NO_RETURN
;
5534 my_png_error (png_struct
*png_ptr
, const char *msg
)
5536 xassert (png_ptr
!= NULL
);
5537 /* Avoid compiler warning about deprecated direct access to
5538 png_ptr's fields in libpng versions 1.4.x. */
5539 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5540 PNG_LONGJMP (png_ptr
);
5545 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5547 xassert (png_ptr
!= NULL
);
5548 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5551 /* Memory source for PNG decoding. */
5553 struct png_memory_storage
5555 unsigned char *bytes
; /* The data */
5556 size_t len
; /* How big is it? */
5557 int index
; /* Where are we? */
5561 /* Function set as reader function when reading PNG image from memory.
5562 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5563 bytes from the input to DATA. */
5566 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5568 struct png_memory_storage
*tbr
5569 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5571 if (length
> tbr
->len
- tbr
->index
)
5572 fn_png_error (png_ptr
, "Read error");
5574 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5575 tbr
->index
= tbr
->index
+ length
;
5579 /* Function set as reader function when reading PNG image from a file.
5580 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5581 bytes from the input to DATA. */
5584 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5586 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5588 if (fread (data
, 1, length
, fp
) < length
)
5589 fn_png_error (png_ptr
, "Read error");
5593 /* Load PNG image IMG for use on frame F. Value is non-zero if
5597 png_load (struct frame
*f
, struct image
*img
)
5599 Lisp_Object file
, specified_file
;
5600 Lisp_Object specified_data
;
5602 XImagePtr ximg
, mask_img
= NULL
;
5603 png_struct
*png_ptr
= NULL
;
5604 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5605 FILE *volatile fp
= NULL
;
5607 png_byte
* volatile pixels
= NULL
;
5608 png_byte
** volatile rows
= NULL
;
5609 png_uint_32 width
, height
;
5610 int bit_depth
, color_type
, interlace_type
;
5612 png_uint_32 row_bytes
;
5614 struct png_memory_storage tbr
; /* Data to be read */
5616 /* Find out what file to load. */
5617 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5618 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5620 if (NILP (specified_data
))
5622 file
= x_find_image_file (specified_file
);
5623 if (!STRINGP (file
))
5625 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5629 /* Open the image file. */
5630 fp
= fopen (SSDATA (file
), "rb");
5633 image_error ("Cannot open image file `%s'", file
, Qnil
);
5637 /* Check PNG signature. */
5638 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5639 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5641 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5648 if (!STRINGP (specified_data
))
5650 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
5654 /* Read from memory. */
5655 tbr
.bytes
= SDATA (specified_data
);
5656 tbr
.len
= SBYTES (specified_data
);
5659 /* Check PNG signature. */
5660 if (tbr
.len
< sizeof sig
5661 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5663 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5667 /* Need to skip past the signature. */
5668 tbr
.bytes
+= sizeof (sig
);
5671 /* Initialize read and info structs for PNG lib. */
5672 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5677 if (fp
) fclose (fp
);
5681 info_ptr
= fn_png_create_info_struct (png_ptr
);
5684 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5685 if (fp
) fclose (fp
);
5689 end_info
= fn_png_create_info_struct (png_ptr
);
5692 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5693 if (fp
) fclose (fp
);
5697 /* Set error jump-back. We come back here when the PNG library
5698 detects an error. */
5699 if (setjmp (PNG_JMPBUF (png_ptr
)))
5703 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5706 if (fp
) fclose (fp
);
5710 /* Read image info. */
5711 if (!NILP (specified_data
))
5712 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5714 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5716 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5717 fn_png_read_info (png_ptr
, info_ptr
);
5718 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5719 &interlace_type
, NULL
, NULL
);
5721 if (!check_image_size (f
, width
, height
))
5723 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5726 /* If image contains simply transparency data, we prefer to
5727 construct a clipping mask. */
5728 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5733 /* This function is easier to write if we only have to handle
5734 one data format: RGB or RGBA with 8 bits per channel. Let's
5735 transform other formats into that format. */
5737 /* Strip more than 8 bits per channel. */
5738 if (bit_depth
== 16)
5739 fn_png_set_strip_16 (png_ptr
);
5741 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5743 fn_png_set_expand (png_ptr
);
5745 /* Convert grayscale images to RGB. */
5746 if (color_type
== PNG_COLOR_TYPE_GRAY
5747 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5748 fn_png_set_gray_to_rgb (png_ptr
);
5750 /* Handle alpha channel by combining the image with a background
5751 color. Do this only if a real alpha channel is supplied. For
5752 simple transparency, we prefer a clipping mask. */
5755 /* png_color_16 *image_bg; */
5756 Lisp_Object specified_bg
5757 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5758 int shift
= (bit_depth
== 16) ? 0 : 8;
5760 if (STRINGP (specified_bg
))
5761 /* The user specified `:background', use that. */
5764 if (x_defined_color (f
, SSDATA (specified_bg
), &color
, 0))
5766 png_color_16 user_bg
;
5768 memset (&user_bg
, 0, sizeof user_bg
);
5769 user_bg
.red
= color
.red
>> shift
;
5770 user_bg
.green
= color
.green
>> shift
;
5771 user_bg
.blue
= color
.blue
>> shift
;
5773 fn_png_set_background (png_ptr
, &user_bg
,
5774 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5779 /* We use the current frame background, ignoring any default
5780 background color set by the image. */
5781 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5783 png_color_16 frame_background
;
5785 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5786 x_query_color (f
, &color
);
5788 memset (&frame_background
, 0, sizeof frame_background
);
5789 frame_background
.red
= color
.red
>> shift
;
5790 frame_background
.green
= color
.green
>> shift
;
5791 frame_background
.blue
= color
.blue
>> shift
;
5792 #endif /* HAVE_X_WINDOWS */
5794 fn_png_set_background (png_ptr
, &frame_background
,
5795 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5799 /* Update info structure. */
5800 fn_png_read_update_info (png_ptr
, info_ptr
);
5802 /* Get number of channels. Valid values are 1 for grayscale images
5803 and images with a palette, 2 for grayscale images with transparency
5804 information (alpha channel), 3 for RGB images, and 4 for RGB
5805 images with alpha channel, i.e. RGBA. If conversions above were
5806 sufficient we should only have 3 or 4 channels here. */
5807 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5808 xassert (channels
== 3 || channels
== 4);
5810 /* Number of bytes needed for one row of the image. */
5811 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5813 /* Allocate memory for the image. */
5814 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5815 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5816 for (i
= 0; i
< height
; ++i
)
5817 rows
[i
] = pixels
+ i
* row_bytes
;
5819 /* Read the entire image. */
5820 fn_png_read_image (png_ptr
, rows
);
5821 fn_png_read_end (png_ptr
, info_ptr
);
5828 /* Create the X image and pixmap. */
5829 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5833 /* Create an image and pixmap serving as mask if the PNG image
5834 contains an alpha channel. */
5837 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5838 &mask_img
, &img
->mask
))
5840 x_destroy_x_image (ximg
);
5841 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5842 img
->pixmap
= NO_PIXMAP
;
5846 /* Fill the X image and mask from PNG data. */
5847 init_color_table ();
5849 for (y
= 0; y
< height
; ++y
)
5851 png_byte
*p
= rows
[y
];
5853 for (x
= 0; x
< width
; ++x
)
5860 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5861 /* An alpha channel, aka mask channel, associates variable
5862 transparency with an image. Where other image formats
5863 support binary transparency---fully transparent or fully
5864 opaque---PNG allows up to 254 levels of partial transparency.
5865 The PNG library implements partial transparency by combining
5866 the image with a specified background color.
5868 I'm not sure how to handle this here nicely: because the
5869 background on which the image is displayed may change, for
5870 real alpha channel support, it would be necessary to create
5871 a new image for each possible background.
5873 What I'm doing now is that a mask is created if we have
5874 boolean transparency information. Otherwise I'm using
5875 the frame's background color to combine the image with. */
5880 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5886 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5887 /* Set IMG's background color from the PNG image, unless the user
5891 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5893 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5894 img
->background_valid
= 1;
5898 #ifdef COLOR_TABLE_SUPPORT
5899 /* Remember colors allocated for this image. */
5900 img
->colors
= colors_in_color_table (&img
->ncolors
);
5901 free_color_table ();
5902 #endif /* COLOR_TABLE_SUPPORT */
5905 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5910 img
->height
= height
;
5912 /* Maybe fill in the background field while we have ximg handy.
5913 Casting avoids a GCC warning. */
5914 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5916 /* Put the image into the pixmap, then free the X image and its buffer. */
5917 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5918 x_destroy_x_image (ximg
);
5920 /* Same for the mask. */
5923 /* Fill in the background_transparent field while we have the
5924 mask handy. Casting avoids a GCC warning. */
5925 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5927 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5928 x_destroy_x_image (mask_img
);
5934 #else /* HAVE_PNG */
5938 png_load (struct frame
*f
, struct image
*img
)
5940 return ns_load_image(f
, img
,
5941 image_spec_value (img
->spec
, QCfile
, NULL
),
5942 image_spec_value (img
->spec
, QCdata
, NULL
));
5944 #endif /* HAVE_NS */
5947 #endif /* !HAVE_PNG */
5951 /***********************************************************************
5953 ***********************************************************************/
5955 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5957 static int jpeg_image_p (Lisp_Object object
);
5958 static int jpeg_load (struct frame
*f
, struct image
*img
);
5960 /* The symbol `jpeg' identifying images of this type. */
5964 /* Indices of image specification fields in gs_format, below. */
5966 enum jpeg_keyword_index
5975 JPEG_HEURISTIC_MASK
,
5981 /* Vector of image_keyword structures describing the format
5982 of valid user-defined image specifications. */
5984 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5986 {":type", IMAGE_SYMBOL_VALUE
, 1},
5987 {":data", IMAGE_STRING_VALUE
, 0},
5988 {":file", IMAGE_STRING_VALUE
, 0},
5989 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5990 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5991 {":relief", IMAGE_INTEGER_VALUE
, 0},
5992 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5993 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5994 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5995 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5998 /* Structure describing the image type `jpeg'. */
6000 static struct image_type jpeg_type
=
6009 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6012 jpeg_image_p (Lisp_Object object
)
6014 struct image_keyword fmt
[JPEG_LAST
];
6016 memcpy (fmt
, jpeg_format
, sizeof fmt
);
6018 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6021 /* Must specify either the :data or :file keyword. */
6022 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6025 #endif /* HAVE_JPEG || HAVE_NS */
6029 /* Work around a warning about HAVE_STDLIB_H being redefined in
6031 #ifdef HAVE_STDLIB_H
6032 #undef HAVE_STDLIB_H
6033 #endif /* HAVE_STLIB_H */
6035 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6036 /* In older releases of the jpeg library, jpeglib.h will define boolean
6037 differently depending on __WIN32__, so make sure it is defined. */
6041 #include <jpeglib.h>
6044 #ifdef HAVE_STLIB_H_1
6045 #define HAVE_STDLIB_H 1
6050 /* JPEG library details. */
6051 DEF_IMGLIB_FN (void, jpeg_CreateDecompress
, (j_decompress_ptr
, int, size_t));
6052 DEF_IMGLIB_FN (boolean
, jpeg_start_decompress
, (j_decompress_ptr
));
6053 DEF_IMGLIB_FN (boolean
, jpeg_finish_decompress
, (j_decompress_ptr
));
6054 DEF_IMGLIB_FN (void, jpeg_destroy_decompress
, (j_decompress_ptr
));
6055 DEF_IMGLIB_FN (int, jpeg_read_header
, (j_decompress_ptr
, boolean
));
6056 DEF_IMGLIB_FN (JDIMENSION
, jpeg_read_scanlines
, (j_decompress_ptr
, JSAMPARRAY
, JDIMENSION
));
6057 DEF_IMGLIB_FN (struct jpeg_error_mgr
*, jpeg_std_error
, (struct jpeg_error_mgr
*));
6058 DEF_IMGLIB_FN (boolean
, jpeg_resync_to_restart
, (j_decompress_ptr
, int));
6061 init_jpeg_functions (Lisp_Object libraries
)
6065 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6068 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6069 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6070 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6071 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6072 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6073 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6074 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6075 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6079 /* Wrapper since we can't directly assign the function pointer
6080 to another function pointer that was declared more completely easily. */
6082 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6084 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6089 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6090 #define fn_jpeg_start_decompress jpeg_start_decompress
6091 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6092 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6093 #define fn_jpeg_read_header jpeg_read_header
6094 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6095 #define fn_jpeg_std_error jpeg_std_error
6096 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6098 #endif /* HAVE_NTGUI */
6100 struct my_jpeg_error_mgr
6102 struct jpeg_error_mgr pub
;
6103 jmp_buf setjmp_buffer
;
6107 static void my_error_exit (j_common_ptr
) NO_RETURN
;
6109 my_error_exit (j_common_ptr cinfo
)
6111 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6112 longjmp (mgr
->setjmp_buffer
, 1);
6116 /* Init source method for JPEG data source manager. Called by
6117 jpeg_read_header() before any data is actually read. See
6118 libjpeg.doc from the JPEG lib distribution. */
6121 our_common_init_source (j_decompress_ptr cinfo
)
6126 /* Method to terminate data source. Called by
6127 jpeg_finish_decompress() after all data has been processed. */
6130 our_common_term_source (j_decompress_ptr cinfo
)
6135 /* Fill input buffer method for JPEG data source manager. Called
6136 whenever more data is needed. We read the whole image in one step,
6137 so this only adds a fake end of input marker at the end. */
6139 static JOCTET our_memory_buffer
[2];
6142 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6144 /* Insert a fake EOI marker. */
6145 struct jpeg_source_mgr
*src
= cinfo
->src
;
6147 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6148 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6150 src
->next_input_byte
= our_memory_buffer
;
6151 src
->bytes_in_buffer
= 2;
6156 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6157 is the JPEG data source manager. */
6160 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6162 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6166 if (num_bytes
> src
->bytes_in_buffer
)
6167 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6169 src
->bytes_in_buffer
-= num_bytes
;
6170 src
->next_input_byte
+= num_bytes
;
6175 /* Set up the JPEG lib for reading an image from DATA which contains
6176 LEN bytes. CINFO is the decompression info structure created for
6177 reading the image. */
6180 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6182 struct jpeg_source_mgr
*src
;
6184 if (cinfo
->src
== NULL
)
6186 /* First time for this JPEG object? */
6187 cinfo
->src
= (struct jpeg_source_mgr
*)
6188 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6189 sizeof (struct jpeg_source_mgr
));
6190 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6191 src
->next_input_byte
= data
;
6194 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6195 src
->init_source
= our_common_init_source
;
6196 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6197 src
->skip_input_data
= our_memory_skip_input_data
;
6198 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6199 src
->term_source
= our_common_term_source
;
6200 src
->bytes_in_buffer
= len
;
6201 src
->next_input_byte
= data
;
6205 struct jpeg_stdio_mgr
6207 struct jpeg_source_mgr mgr
;
6214 /* Size of buffer to read JPEG from file.
6215 Not too big, as we want to use alloc_small. */
6216 #define JPEG_STDIO_BUFFER_SIZE 8192
6219 /* Fill input buffer method for JPEG data source manager. Called
6220 whenever more data is needed. The data is read from a FILE *. */
6223 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6225 struct jpeg_stdio_mgr
*src
;
6227 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6232 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6234 src
->mgr
.bytes_in_buffer
= bytes
;
6237 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6239 src
->buffer
[0] = (JOCTET
) 0xFF;
6240 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6241 src
->mgr
.bytes_in_buffer
= 2;
6243 src
->mgr
.next_input_byte
= src
->buffer
;
6250 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6251 is the JPEG data source manager. */
6254 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6256 struct jpeg_stdio_mgr
*src
;
6257 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6259 while (num_bytes
> 0 && !src
->finished
)
6261 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6263 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6264 src
->mgr
.next_input_byte
+= num_bytes
;
6269 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6270 src
->mgr
.bytes_in_buffer
= 0;
6271 src
->mgr
.next_input_byte
= NULL
;
6273 our_stdio_fill_input_buffer (cinfo
);
6279 /* Set up the JPEG lib for reading an image from a FILE *.
6280 CINFO is the decompression info structure created for
6281 reading the image. */
6284 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6286 struct jpeg_stdio_mgr
*src
;
6288 if (cinfo
->src
!= NULL
)
6289 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6292 /* First time for this JPEG object? */
6293 cinfo
->src
= (struct jpeg_source_mgr
*)
6294 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6295 sizeof (struct jpeg_stdio_mgr
));
6296 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6297 src
->buffer
= (JOCTET
*)
6298 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6299 JPEG_STDIO_BUFFER_SIZE
);
6304 src
->mgr
.init_source
= our_common_init_source
;
6305 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6306 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6307 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6308 src
->mgr
.term_source
= our_common_term_source
;
6309 src
->mgr
.bytes_in_buffer
= 0;
6310 src
->mgr
.next_input_byte
= NULL
;
6314 /* Load image IMG for use on frame F. Patterned after example.c
6315 from the JPEG lib. */
6318 jpeg_load (struct frame
*f
, struct image
*img
)
6320 struct jpeg_decompress_struct cinfo
;
6321 struct my_jpeg_error_mgr mgr
;
6322 Lisp_Object file
, specified_file
;
6323 Lisp_Object specified_data
;
6324 FILE * volatile fp
= NULL
;
6326 int row_stride
, x
, y
;
6327 XImagePtr ximg
= NULL
;
6329 unsigned long *colors
;
6332 /* Open the JPEG file. */
6333 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6334 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6336 if (NILP (specified_data
))
6338 file
= x_find_image_file (specified_file
);
6339 if (!STRINGP (file
))
6341 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6345 fp
= fopen (SSDATA (file
), "rb");
6348 image_error ("Cannot open `%s'", file
, Qnil
);
6352 else if (!STRINGP (specified_data
))
6354 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6358 /* Customize libjpeg's error handling to call my_error_exit when an
6359 error is detected. This function will perform a longjmp. */
6360 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6361 mgr
.pub
.error_exit
= my_error_exit
;
6363 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6367 /* Called from my_error_exit. Display a JPEG error. */
6368 char buf
[JMSG_LENGTH_MAX
];
6369 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buf
);
6370 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6371 build_string (buf
));
6374 /* Close the input file and destroy the JPEG object. */
6376 fclose ((FILE *) fp
);
6377 fn_jpeg_destroy_decompress (&cinfo
);
6379 /* If we already have an XImage, free that. */
6380 x_destroy_x_image (ximg
);
6382 /* Free pixmap and colors. */
6383 x_clear_image (f
, img
);
6387 /* Create the JPEG decompression object. Let it read from fp.
6388 Read the JPEG image header. */
6389 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6391 if (NILP (specified_data
))
6392 jpeg_file_src (&cinfo
, (FILE *) fp
);
6394 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6395 SBYTES (specified_data
));
6397 fn_jpeg_read_header (&cinfo
, 1);
6399 /* Customize decompression so that color quantization will be used.
6400 Start decompression. */
6401 cinfo
.quantize_colors
= 1;
6402 fn_jpeg_start_decompress (&cinfo
);
6403 width
= img
->width
= cinfo
.output_width
;
6404 height
= img
->height
= cinfo
.output_height
;
6406 if (!check_image_size (f
, width
, height
))
6408 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6409 longjmp (mgr
.setjmp_buffer
, 2);
6412 /* Create X image and pixmap. */
6413 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6414 longjmp (mgr
.setjmp_buffer
, 2);
6416 /* Allocate colors. When color quantization is used,
6417 cinfo.actual_number_of_colors has been set with the number of
6418 colors generated, and cinfo.colormap is a two-dimensional array
6419 of color indices in the range 0..cinfo.actual_number_of_colors.
6420 No more than 255 colors will be generated. */
6424 if (cinfo
.out_color_components
> 2)
6425 ir
= 0, ig
= 1, ib
= 2;
6426 else if (cinfo
.out_color_components
> 1)
6427 ir
= 0, ig
= 1, ib
= 0;
6429 ir
= 0, ig
= 0, ib
= 0;
6431 /* Use the color table mechanism because it handles colors that
6432 cannot be allocated nicely. Such colors will be replaced with
6433 a default color, and we don't have to care about which colors
6434 can be freed safely, and which can't. */
6435 init_color_table ();
6436 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6439 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6441 /* Multiply RGB values with 255 because X expects RGB values
6442 in the range 0..0xffff. */
6443 int r
= cinfo
.colormap
[ir
][i
] << 8;
6444 int g
= cinfo
.colormap
[ig
][i
] << 8;
6445 int b
= cinfo
.colormap
[ib
][i
] << 8;
6446 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6449 #ifdef COLOR_TABLE_SUPPORT
6450 /* Remember those colors actually allocated. */
6451 img
->colors
= colors_in_color_table (&img
->ncolors
);
6452 free_color_table ();
6453 #endif /* COLOR_TABLE_SUPPORT */
6457 row_stride
= width
* cinfo
.output_components
;
6458 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6460 for (y
= 0; y
< height
; ++y
)
6462 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6463 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6464 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6468 fn_jpeg_finish_decompress (&cinfo
);
6469 fn_jpeg_destroy_decompress (&cinfo
);
6471 fclose ((FILE *) fp
);
6473 /* Maybe fill in the background field while we have ximg handy. */
6474 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6475 /* Casting avoids a GCC warning. */
6476 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6478 /* Put the image into the pixmap. */
6479 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6480 x_destroy_x_image (ximg
);
6484 #else /* HAVE_JPEG */
6488 jpeg_load (struct frame
*f
, struct image
*img
)
6490 return ns_load_image (f
, img
,
6491 image_spec_value (img
->spec
, QCfile
, NULL
),
6492 image_spec_value (img
->spec
, QCdata
, NULL
));
6494 #endif /* HAVE_NS */
6496 #endif /* !HAVE_JPEG */
6500 /***********************************************************************
6502 ***********************************************************************/
6504 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6506 static int tiff_image_p (Lisp_Object object
);
6507 static int tiff_load (struct frame
*f
, struct image
*img
);
6509 /* The symbol `tiff' identifying images of this type. */
6513 /* Indices of image specification fields in tiff_format, below. */
6515 enum tiff_keyword_index
6524 TIFF_HEURISTIC_MASK
,
6531 /* Vector of image_keyword structures describing the format
6532 of valid user-defined image specifications. */
6534 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6536 {":type", IMAGE_SYMBOL_VALUE
, 1},
6537 {":data", IMAGE_STRING_VALUE
, 0},
6538 {":file", IMAGE_STRING_VALUE
, 0},
6539 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6540 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6541 {":relief", IMAGE_INTEGER_VALUE
, 0},
6542 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6543 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6544 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6545 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6546 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6549 /* Structure describing the image type `tiff'. */
6551 static struct image_type tiff_type
=
6560 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6563 tiff_image_p (Lisp_Object object
)
6565 struct image_keyword fmt
[TIFF_LAST
];
6566 memcpy (fmt
, tiff_format
, sizeof fmt
);
6568 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6571 /* Must specify either the :data or :file keyword. */
6572 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6575 #endif /* HAVE_TIFF || HAVE_NS */
6583 /* TIFF library details. */
6584 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetErrorHandler
, (TIFFErrorHandler
));
6585 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetWarningHandler
, (TIFFErrorHandler
));
6586 DEF_IMGLIB_FN (TIFF
*, TIFFOpen
, (const char *, const char *));
6587 DEF_IMGLIB_FN (TIFF
*, TIFFClientOpen
, (const char *, const char *, thandle_t
,
6588 TIFFReadWriteProc
, TIFFReadWriteProc
,
6589 TIFFSeekProc
, TIFFCloseProc
, TIFFSizeProc
,
6590 TIFFMapFileProc
, TIFFUnmapFileProc
));
6591 DEF_IMGLIB_FN (int, TIFFGetField
, (TIFF
*, ttag_t
, ...));
6592 DEF_IMGLIB_FN (int, TIFFReadRGBAImage
, (TIFF
*, uint32
, uint32
, uint32
*, int));
6593 DEF_IMGLIB_FN (void, TIFFClose
, (TIFF
*));
6594 DEF_IMGLIB_FN (int, TIFFSetDirectory
, (TIFF
*, tdir_t
));
6597 init_tiff_functions (Lisp_Object libraries
)
6601 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6604 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6605 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6606 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6607 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6608 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6609 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6610 LOAD_IMGLIB_FN (library
, TIFFClose
);
6611 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6617 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6618 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6619 #define fn_TIFFOpen TIFFOpen
6620 #define fn_TIFFClientOpen TIFFClientOpen
6621 #define fn_TIFFGetField TIFFGetField
6622 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6623 #define fn_TIFFClose TIFFClose
6624 #define fn_TIFFSetDirectory TIFFSetDirectory
6625 #endif /* HAVE_NTGUI */
6628 /* Reading from a memory buffer for TIFF images Based on the PNG
6629 memory source, but we have to provide a lot of extra functions.
6632 We really only need to implement read and seek, but I am not
6633 convinced that the TIFF library is smart enough not to destroy
6634 itself if we only hand it the function pointers we need to
6639 unsigned char *bytes
;
6646 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6648 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6650 if (size
> src
->len
- src
->index
)
6652 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6658 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6664 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6666 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6671 case SEEK_SET
: /* Go from beginning of source. */
6675 case SEEK_END
: /* Go from end of source. */
6676 idx
= src
->len
+ off
;
6679 case SEEK_CUR
: /* Go from current position. */
6680 idx
= src
->index
+ off
;
6683 default: /* Invalid `whence'. */
6687 if (idx
> src
->len
|| idx
< 0)
6695 tiff_close_memory (thandle_t data
)
6702 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6704 /* It is already _IN_ memory. */
6709 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6711 /* We don't need to do this. */
6715 tiff_size_of_memory (thandle_t data
)
6717 return ((tiff_memory_source
*) data
)->len
;
6722 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6727 len
= sprintf (buf
, "TIFF error: %s ", title
);
6728 vsprintf (buf
+ len
, format
, ap
);
6729 add_to_log (buf
, Qnil
, Qnil
);
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 (tiff_error_handler
);
6765 fn_TIFFSetWarningHandler (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, rc2
= 1; rc2
; count
++)
6845 rc2
= fn_TIFFSetDirectory (tiff
, 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. */);