1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
31 #if defined HAVE_LIBPNG_PNG_H
32 # include <libpng/png.h>
40 /* This makes the fields of a Display accessible, in Xlib header files. */
42 #define XLIB_ILLEGAL_ACCESS
47 #include "dispextern.h"
48 #include "blockinput.h"
51 #include "character.h"
53 #include "termhooks.h"
58 #include <sys/types.h>
61 #define COLOR_TABLE_SUPPORT 1
63 typedef struct x_bitmap_record Bitmap_Record
;
64 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
65 #define NO_PIXMAP None
67 #define RGB_PIXEL_COLOR unsigned long
69 #define PIX_MASK_RETAIN 0
70 #define PIX_MASK_DRAW 1
71 #endif /* HAVE_X_WINDOWS */
77 /* W32_TODO : Color tables on W32. */
78 #undef COLOR_TABLE_SUPPORT
80 typedef struct w32_bitmap_record Bitmap_Record
;
81 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
84 #define RGB_PIXEL_COLOR COLORREF
86 #define PIX_MASK_RETAIN 0
87 #define PIX_MASK_DRAW 1
89 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
90 #define x_defined_color w32_defined_color
91 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
93 /* Functions from w32term.c that depend on XColor (so can't go in w32term.h
94 without modifying lots of files). */
95 extern void x_query_colors (struct frame
*f
, XColor
*colors
, int ncolors
);
96 extern void x_query_color (struct frame
*f
, XColor
*color
);
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 /* Search path for bitmap files. */
127 Lisp_Object Vx_bitmap_file_path
;
130 static void x_disable_image
P_ ((struct frame
*, struct image
*));
131 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
134 static void init_color_table
P_ ((void));
135 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
136 #ifdef COLOR_TABLE_SUPPORT
137 static void free_color_table
P_ ((void));
138 static unsigned long *colors_in_color_table
P_ ((int *n
));
139 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
142 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
143 id, which is just an int that this section returns. Bitmaps are
144 reference counted so they can be shared among frames.
146 Bitmap indices are guaranteed to be > 0, so a negative number can
147 be used to indicate no bitmap.
149 If you use x_create_bitmap_from_data, then you must keep track of
150 the bitmaps yourself. That is, creating a bitmap from the same
151 data more than once will not be caught. */
155 XGetImage (Display
*display
, Pixmap pixmap
, int x
, int y
,
156 unsigned int width
, unsigned int height
,
157 unsigned long plane_mask
, int format
)
159 /* TODO: not sure what this function is supposed to do.. */
160 ns_retain_object(pixmap
);
164 /* use with imgs created by ns_image_for_XPM */
166 XGetPixel (XImagePtr ximage
, int x
, int y
)
168 return ns_get_pixel(ximage
, x
, y
);
171 /* use with imgs created by ns_image_for_XPM; alpha set to 1;
172 pixel is assumed to be in form RGB */
174 XPutPixel (XImagePtr ximage
, int x
, int y
, unsigned long pixel
)
176 ns_put_pixel(ximage
, x
, y
, pixel
);
181 /* Functions to access the contents of a bitmap, given an id. */
184 x_bitmap_height (f
, id
)
188 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
192 x_bitmap_width (f
, id
)
196 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
199 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
201 x_bitmap_pixmap (f
, id
)
205 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
209 #ifdef HAVE_X_WINDOWS
211 x_bitmap_mask (f
, id
)
215 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
219 /* Allocate a new bitmap record. Returns index of new record. */
222 x_allocate_bitmap_record (f
)
225 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
228 if (dpyinfo
->bitmaps
== NULL
)
230 dpyinfo
->bitmaps_size
= 10;
232 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
233 dpyinfo
->bitmaps_last
= 1;
237 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
238 return ++dpyinfo
->bitmaps_last
;
240 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
241 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
244 dpyinfo
->bitmaps_size
*= 2;
246 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
247 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
248 return ++dpyinfo
->bitmaps_last
;
251 /* Add one reference to the reference count of the bitmap with id ID. */
254 x_reference_bitmap (f
, id
)
258 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
261 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
264 x_create_bitmap_from_data (f
, bits
, width
, height
)
267 unsigned int width
, height
;
269 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
272 #ifdef HAVE_X_WINDOWS
274 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
275 bits
, width
, height
);
278 #endif /* HAVE_X_WINDOWS */
282 bitmap
= CreateBitmap (width
, height
,
283 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
284 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
288 #endif /* HAVE_NTGUI */
291 void *bitmap
= ns_image_from_XBM(bits
, width
, height
);
296 id
= x_allocate_bitmap_record (f
);
299 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
300 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
303 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
304 dpyinfo
->bitmaps
[id
- 1].height
= height
;
305 dpyinfo
->bitmaps
[id
- 1].width
= width
;
306 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
308 #ifdef HAVE_X_WINDOWS
309 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
310 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
311 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
312 #endif /* HAVE_X_WINDOWS */
315 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
316 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
317 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
318 #endif /* HAVE_NTGUI */
323 /* Create bitmap from file FILE for frame F. */
326 x_create_bitmap_from_file (f
, file
)
330 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
333 return -1; /* W32_TODO : bitmap support */
334 #endif /* HAVE_NTGUI */
338 void *bitmap
= ns_image_from_file(file
);
344 id
= x_allocate_bitmap_record (f
);
345 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
346 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
347 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
348 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
349 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width(bitmap
);
350 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height(bitmap
);
351 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
355 #ifdef HAVE_X_WINDOWS
356 unsigned int width
, height
;
358 int xhot
, yhot
, result
, id
;
363 /* Look for an existing bitmap with the same name. */
364 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
366 if (dpyinfo
->bitmaps
[id
].refcount
367 && dpyinfo
->bitmaps
[id
].file
368 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
370 ++dpyinfo
->bitmaps
[id
].refcount
;
375 /* Search bitmap-file-path for the file, if appropriate. */
376 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
381 filename
= (char *) SDATA (found
);
383 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
384 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
385 if (result
!= BitmapSuccess
)
388 id
= x_allocate_bitmap_record (f
);
389 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
390 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
391 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
392 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
393 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
394 dpyinfo
->bitmaps
[id
- 1].height
= height
;
395 dpyinfo
->bitmaps
[id
- 1].width
= width
;
396 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
399 #endif /* HAVE_X_WINDOWS */
405 free_bitmap_record (dpyinfo
, bm
)
406 Display_Info
*dpyinfo
;
409 #ifdef HAVE_X_WINDOWS
410 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
412 XFreePixmap (dpyinfo
->display
, bm
->mask
);
413 #endif /* HAVE_X_WINDOWS */
416 DeleteObject (bm
->pixmap
);
417 #endif /* HAVE_NTGUI */
420 ns_release_object(bm
->img
);
430 /* Remove reference to bitmap with id number ID. */
433 x_destroy_bitmap (f
, id
)
437 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
441 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
443 if (--bm
->refcount
== 0)
446 free_bitmap_record (dpyinfo
, bm
);
452 /* Free all the bitmaps for the display specified by DPYINFO. */
455 x_destroy_all_bitmaps (dpyinfo
)
456 Display_Info
*dpyinfo
;
459 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
461 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
462 if (bm
->refcount
> 0)
463 free_bitmap_record (dpyinfo
, bm
);
465 dpyinfo
->bitmaps_last
= 0;
469 #ifdef HAVE_X_WINDOWS
471 /* Useful functions defined in the section
472 `Image type independent image structures' below. */
474 static unsigned long four_corners_best
P_ ((XImagePtr ximg
,
477 unsigned long height
));
479 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
480 int depth
, XImagePtr
*ximg
,
483 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
486 /* Create a mask of a bitmap. Note is this not a perfect mask.
487 It's nicer with some borders in this context */
490 x_create_bitmap_mask (f
, id
)
495 XImagePtr ximg
, mask_img
;
496 unsigned long width
, height
;
499 unsigned long x
, y
, xp
, xm
, yp
, ym
;
502 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
507 pixmap
= x_bitmap_pixmap (f
, id
);
508 width
= x_bitmap_width (f
, id
);
509 height
= x_bitmap_height (f
, id
);
512 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
521 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
526 XDestroyImage (ximg
);
530 bg
= four_corners_best (ximg
, NULL
, width
, height
);
532 for (y
= 0; y
< ximg
->height
; ++y
)
534 for (x
= 0; x
< ximg
->width
; ++x
)
536 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
537 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
538 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
539 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
540 if (XGetPixel (ximg
, x
, y
) == bg
541 && XGetPixel (ximg
, x
, yp
) == bg
542 && XGetPixel (ximg
, x
, ym
) == bg
543 && XGetPixel (ximg
, xp
, y
) == bg
544 && XGetPixel (ximg
, xp
, yp
) == bg
545 && XGetPixel (ximg
, xp
, ym
) == bg
546 && XGetPixel (ximg
, xm
, y
) == bg
547 && XGetPixel (ximg
, xm
, yp
) == bg
548 && XGetPixel (ximg
, xm
, ym
) == bg
)
549 XPutPixel (mask_img
, x
, y
, 0);
551 XPutPixel (mask_img
, x
, y
, 1);
555 xassert (interrupt_input_blocked
);
556 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
557 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
559 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
561 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
562 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
564 XDestroyImage (ximg
);
565 x_destroy_x_image (mask_img
);
570 #endif /* HAVE_X_WINDOWS */
573 /***********************************************************************
575 ***********************************************************************/
577 /* Value is the number of elements of vector VECTOR. */
579 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
581 /* List of supported image types. Use define_image_type to add new
582 types. Use lookup_image_type to find a type for a given symbol. */
584 static struct image_type
*image_types
;
586 /* A list of symbols, one for each supported image type. */
588 Lisp_Object Vimage_types
;
590 /* An alist of image types and libraries that implement the type. */
592 Lisp_Object Vimage_library_alist
;
594 /* Cache for delayed-loading image types. */
596 static Lisp_Object Vimage_type_cache
;
598 /* The symbol `xbm' which is used as the type symbol for XBM images. */
604 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
605 extern Lisp_Object QCdata
, QCtype
;
606 extern Lisp_Object Qcenter
;
607 Lisp_Object QCascent
, QCmargin
, QCrelief
, Qcount
, Qextension_data
;
608 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
609 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
613 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
615 /* Time in seconds after which images should be removed from the cache
618 Lisp_Object Vimage_cache_eviction_delay
;
620 /* Function prototypes. */
622 static Lisp_Object define_image_type
P_ ((struct image_type
*type
, int loaded
));
623 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
624 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
625 static void x_laplace
P_ ((struct frame
*, struct image
*));
626 static void x_emboss
P_ ((struct frame
*, struct image
*));
627 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
630 #define CACHE_IMAGE_TYPE(type, status) \
631 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
633 #define ADD_IMAGE_TYPE(type) \
634 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
636 /* Define a new image type from TYPE. This adds a copy of TYPE to
637 image_types and caches the loading status of TYPE. */
640 define_image_type (type
, loaded
)
641 struct image_type
*type
;
650 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
651 The initialized data segment is read-only. */
652 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
653 bcopy (type
, p
, sizeof *p
);
654 p
->next
= image_types
;
659 CACHE_IMAGE_TYPE (*type
->type
, success
);
664 /* Look up image type SYMBOL, and return a pointer to its image_type
665 structure. Value is null if SYMBOL is not a known image type. */
667 static INLINE
struct image_type
*
668 lookup_image_type (symbol
)
671 struct image_type
*type
;
673 /* We must initialize the image-type if it hasn't been already. */
674 if (NILP (Finit_image_library (symbol
, Vimage_library_alist
)))
675 return 0; /* unimplemented */
677 for (type
= image_types
; type
; type
= type
->next
)
678 if (EQ (symbol
, *type
->type
))
685 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
686 valid image specification is a list whose car is the symbol
687 `image', and whose rest is a property list. The property list must
688 contain a value for key `:type'. That value must be the name of a
689 supported image type. The rest of the property list depends on the
693 valid_image_p (object
)
702 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
703 if (EQ (XCAR (tem
), QCtype
))
706 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
708 struct image_type
*type
;
709 type
= lookup_image_type (XCAR (tem
));
711 valid_p
= type
->valid_p (object
);
722 /* Log error message with format string FORMAT and argument ARG.
723 Signaling an error, e.g. when an image cannot be loaded, is not a
724 good idea because this would interrupt redisplay, and the error
725 message display would lead to another redisplay. This function
726 therefore simply displays a message. */
729 image_error (format
, arg1
, arg2
)
731 Lisp_Object arg1
, arg2
;
733 add_to_log (format
, arg1
, arg2
);
738 /***********************************************************************
740 ***********************************************************************/
742 enum image_value_type
744 IMAGE_DONT_CHECK_VALUE_TYPE
,
746 IMAGE_STRING_OR_NIL_VALUE
,
748 IMAGE_POSITIVE_INTEGER_VALUE
,
749 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
750 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
753 IMAGE_FUNCTION_VALUE
,
758 /* Structure used when parsing image specifications. */
762 /* Name of keyword. */
765 /* The type of value allowed. */
766 enum image_value_type type
;
768 /* Non-zero means key must be present. */
771 /* Used to recognize duplicate keywords in a property list. */
774 /* The value that was found. */
779 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
781 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
784 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
785 has the format (image KEYWORD VALUE ...). One of the keyword/
786 value pairs must be `:type TYPE'. KEYWORDS is a vector of
787 image_keywords structures of size NKEYWORDS describing other
788 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
791 parse_image_spec (spec
, keywords
, nkeywords
, type
)
793 struct image_keyword
*keywords
;
804 while (CONSP (plist
))
806 Lisp_Object key
, value
;
808 /* First element of a pair must be a symbol. */
810 plist
= XCDR (plist
);
814 /* There must follow a value. */
817 value
= XCAR (plist
);
818 plist
= XCDR (plist
);
820 /* Find key in KEYWORDS. Error if not found. */
821 for (i
= 0; i
< nkeywords
; ++i
)
822 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
828 /* Record that we recognized the keyword. If a keywords
829 was found more than once, it's an error. */
830 keywords
[i
].value
= value
;
833 if (keywords
[i
].count
> 1)
836 /* Check type of value against allowed type. */
837 switch (keywords
[i
].type
)
839 case IMAGE_STRING_VALUE
:
840 if (!STRINGP (value
))
844 case IMAGE_STRING_OR_NIL_VALUE
:
845 if (!STRINGP (value
) && !NILP (value
))
849 case IMAGE_SYMBOL_VALUE
:
850 if (!SYMBOLP (value
))
854 case IMAGE_POSITIVE_INTEGER_VALUE
:
855 if (!INTEGERP (value
) || XINT (value
) <= 0)
859 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
860 if (INTEGERP (value
) && XINT (value
) >= 0)
863 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
864 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
868 case IMAGE_ASCENT_VALUE
:
869 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
871 else if (INTEGERP (value
)
873 && XINT (value
) <= 100)
877 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
878 if (!INTEGERP (value
) || XINT (value
) < 0)
882 case IMAGE_DONT_CHECK_VALUE_TYPE
:
885 case IMAGE_FUNCTION_VALUE
:
886 value
= indirect_function (value
);
889 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
893 case IMAGE_NUMBER_VALUE
:
894 if (!INTEGERP (value
) && !FLOATP (value
))
898 case IMAGE_INTEGER_VALUE
:
899 if (!INTEGERP (value
))
903 case IMAGE_BOOL_VALUE
:
904 if (!NILP (value
) && !EQ (value
, Qt
))
913 if (EQ (key
, QCtype
) && !EQ (type
, value
))
917 /* Check that all mandatory fields are present. */
918 for (i
= 0; i
< nkeywords
; ++i
)
919 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
926 /* Return the value of KEY in image specification SPEC. Value is nil
927 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
928 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
931 image_spec_value (spec
, key
, found
)
932 Lisp_Object spec
, key
;
937 xassert (valid_image_p (spec
));
939 for (tail
= XCDR (spec
);
940 CONSP (tail
) && CONSP (XCDR (tail
));
941 tail
= XCDR (XCDR (tail
)))
943 if (EQ (XCAR (tail
), key
))
947 return XCAR (XCDR (tail
));
957 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
958 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
959 PIXELS non-nil means return the size in pixels, otherwise return the
960 size in canonical character units.
961 FRAME is the frame on which the image will be displayed. FRAME nil
962 or omitted means use the selected frame. */)
963 (spec
, pixels
, frame
)
964 Lisp_Object spec
, pixels
, frame
;
969 if (valid_image_p (spec
))
971 struct frame
*f
= check_x_frame (frame
);
972 int id
= lookup_image (f
, spec
);
973 struct image
*img
= IMAGE_FROM_ID (f
, id
);
974 int width
= img
->width
+ 2 * img
->hmargin
;
975 int height
= img
->height
+ 2 * img
->vmargin
;
978 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
979 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
981 size
= Fcons (make_number (width
), make_number (height
));
984 error ("Invalid image specification");
990 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
991 doc
: /* Return t if image SPEC has a mask bitmap.
992 FRAME is the frame on which the image will be displayed. FRAME nil
993 or omitted means use the selected frame. */)
995 Lisp_Object spec
, frame
;
1000 if (valid_image_p (spec
))
1002 struct frame
*f
= check_x_frame (frame
);
1003 int id
= lookup_image (f
, spec
);
1004 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1009 error ("Invalid image specification");
1014 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
1015 doc
: /* Return metadata for image SPEC.
1016 FRAME is the frame on which the image will be displayed. FRAME nil
1017 or omitted means use the selected frame. */)
1019 Lisp_Object spec
, frame
;
1024 if (valid_image_p (spec
))
1026 struct frame
*f
= check_x_frame (frame
);
1027 int id
= lookup_image (f
, spec
);
1028 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1029 ext
= img
->data
.lisp_val
;
1036 /***********************************************************************
1037 Image type independent image structures
1038 ***********************************************************************/
1040 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1041 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1042 static int check_image_size
P_ ((struct frame
*f
, int width
, int height
));
1044 #define MAX_IMAGE_SIZE 6.0
1045 Lisp_Object Vmax_image_size
;
1047 /* Allocate and return a new image structure for image specification
1048 SPEC. SPEC has a hash value of HASH. */
1050 static struct image
*
1051 make_image (spec
, hash
)
1055 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1056 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
1058 xassert (valid_image_p (spec
));
1059 bzero (img
, sizeof *img
);
1060 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
1061 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1062 xassert (img
->type
!= NULL
);
1064 img
->data
.lisp_val
= Qnil
;
1065 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1067 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1072 /* Free image IMG which was used on frame F, including its resources. */
1081 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1083 /* Remove IMG from the hash table of its cache. */
1085 img
->prev
->next
= img
->next
;
1087 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1090 img
->next
->prev
= img
->prev
;
1092 c
->images
[img
->id
] = NULL
;
1094 /* Free resources, then free IMG. */
1095 img
->type
->free (f
, img
);
1100 /* Return 1 if the given widths and heights are valid for display;
1101 otherwise, return 0. */
1104 check_image_size (f
, width
, height
)
1111 if (width
<= 0 || height
<= 0)
1114 if (INTEGERP (Vmax_image_size
))
1115 w
= h
= XINT (Vmax_image_size
);
1116 else if (FLOATP (Vmax_image_size
))
1120 w
= FRAME_PIXEL_WIDTH (f
);
1121 h
= FRAME_PIXEL_HEIGHT (f
);
1124 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1125 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1126 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1131 return (width
<= w
&& height
<= h
);
1134 /* Prepare image IMG for display on frame F. Must be called before
1135 drawing an image. */
1138 prepare_image_for_display (f
, img
)
1144 /* We're about to display IMG, so set its timestamp to `now'. */
1146 img
->timestamp
= EMACS_SECS (t
);
1148 /* If IMG doesn't have a pixmap yet, load it now, using the image
1149 type dependent loader function. */
1150 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1151 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1156 /* Value is the number of pixels for the ascent of image IMG when
1157 drawn in face FACE. */
1160 image_ascent (img
, face
, slice
)
1163 struct glyph_slice
*slice
;
1168 if (slice
->height
== img
->height
)
1169 height
= img
->height
+ img
->vmargin
;
1170 else if (slice
->y
== 0)
1171 height
= slice
->height
+ img
->vmargin
;
1173 height
= slice
->height
;
1175 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1180 /* W32 specific version. Why?. ++kfs */
1181 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1182 - FONT_BASE (face
->font
)) / 2;
1184 /* This expression is arranged so that if the image can't be
1185 exactly centered, it will be moved slightly up. This is
1186 because a typical font is `top-heavy' (due to the presence
1187 uppercase letters), so the image placement should err towards
1188 being top-heavy too. It also just generally looks better. */
1189 ascent
= (height
+ FONT_BASE(face
->font
)
1190 - FONT_DESCENT(face
->font
) + 1) / 2;
1191 #endif /* HAVE_NTGUI */
1194 ascent
= height
/ 2;
1197 ascent
= (int) (height
* img
->ascent
/ 100.0);
1203 /* Image background colors. */
1205 /* Find the "best" corner color of a bitmap.
1206 On W32, XIMG is assumed to a device context with the bitmap selected. */
1208 static RGB_PIXEL_COLOR
1209 four_corners_best (ximg
, corners
, width
, height
)
1210 XImagePtr_or_DC ximg
;
1212 unsigned long width
, height
;
1214 RGB_PIXEL_COLOR corner_pixels
[4], best
;
1217 if (corners
&& corners
[BOT_CORNER
] >= 0)
1219 /* Get the colors at the corner_pixels of ximg. */
1220 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1221 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1222 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1223 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1227 /* Get the colors at the corner_pixels of ximg. */
1228 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1229 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1230 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1231 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1233 /* Choose the most frequently found color as background. */
1234 for (i
= best_count
= 0; i
< 4; ++i
)
1238 for (j
= n
= 0; j
< 4; ++j
)
1239 if (corner_pixels
[i
] == corner_pixels
[j
])
1243 best
= corner_pixels
[i
], best_count
= n
;
1249 /* Portability macros */
1253 #define Destroy_Image(img_dc, prev) \
1254 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1256 #define Free_Pixmap(display, pixmap) \
1257 DeleteObject (pixmap)
1259 #elif defined (HAVE_NS)
1261 #define Destroy_Image(ximg, dummy) \
1262 ns_release_object(ximg)
1264 #define Free_Pixmap(display, pixmap) \
1265 ns_release_object(pixmap)
1269 #define Destroy_Image(ximg, dummy) \
1270 XDestroyImage (ximg)
1272 #define Free_Pixmap(display, pixmap) \
1273 XFreePixmap (display, pixmap)
1275 #endif /* !HAVE_NTGUI && !HAVE_NS */
1278 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1279 it is guessed heuristically. If non-zero, XIMG is an existing
1280 XImage object (or device context with the image selected on W32) to
1281 use for the heuristic. */
1284 image_background (img
, f
, ximg
)
1287 XImagePtr_or_DC ximg
;
1289 if (! img
->background_valid
)
1290 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1292 int free_ximg
= !ximg
;
1295 #endif /* HAVE_NTGUI */
1300 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1301 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1303 HDC frame_dc
= get_frame_dc (f
);
1304 ximg
= CreateCompatibleDC (frame_dc
);
1305 release_frame_dc (f
, frame_dc
);
1306 prev
= SelectObject (ximg
, img
->pixmap
);
1307 #endif /* !HAVE_NTGUI */
1310 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1313 Destroy_Image (ximg
, prev
);
1315 img
->background_valid
= 1;
1318 return img
->background
;
1321 /* Return the `background_transparent' field of IMG. If IMG doesn't
1322 have one yet, it is guessed heuristically. If non-zero, MASK is an
1323 existing XImage object to use for the heuristic. */
1326 image_background_transparent (img
, f
, mask
)
1329 XImagePtr_or_DC mask
;
1331 if (! img
->background_transparent_valid
)
1332 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1336 int free_mask
= !mask
;
1339 #endif /* HAVE_NTGUI */
1344 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1345 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1347 HDC frame_dc
= get_frame_dc (f
);
1348 mask
= CreateCompatibleDC (frame_dc
);
1349 release_frame_dc (f
, frame_dc
);
1350 prev
= SelectObject (mask
, img
->mask
);
1351 #endif /* HAVE_NTGUI */
1354 img
->background_transparent
1355 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1358 Destroy_Image (mask
, prev
);
1361 img
->background_transparent
= 0;
1363 img
->background_transparent_valid
= 1;
1366 return img
->background_transparent
;
1370 /***********************************************************************
1371 Helper functions for X image types
1372 ***********************************************************************/
1374 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1376 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1377 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1379 Lisp_Object color_name
,
1380 unsigned long dflt
));
1383 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1384 free the pixmap if any. MASK_P non-zero means clear the mask
1385 pixmap if any. COLORS_P non-zero means free colors allocated for
1386 the image, if any. */
1389 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1392 int pixmap_p
, mask_p
, colors_p
;
1394 if (pixmap_p
&& img
->pixmap
)
1396 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1397 img
->pixmap
= NO_PIXMAP
;
1398 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1399 img
->background_valid
= 0;
1402 if (mask_p
&& img
->mask
)
1404 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1405 img
->mask
= NO_PIXMAP
;
1406 img
->background_transparent_valid
= 0;
1409 if (colors_p
&& img
->ncolors
)
1411 /* W32_TODO: color table support. */
1412 #ifdef HAVE_X_WINDOWS
1413 x_free_colors (f
, img
->colors
, img
->ncolors
);
1414 #endif /* HAVE_X_WINDOWS */
1415 xfree (img
->colors
);
1422 /* Free X resources of image IMG which is used on frame F. */
1425 x_clear_image (f
, img
)
1430 x_clear_image_1 (f
, img
, 1, 1, 1);
1435 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1436 cannot be allocated, use DFLT. Add a newly allocated color to
1437 IMG->colors, so that it can be freed again. Value is the pixel
1440 static unsigned long
1441 x_alloc_image_color (f
, img
, color_name
, dflt
)
1444 Lisp_Object color_name
;
1448 unsigned long result
;
1450 xassert (STRINGP (color_name
));
1452 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1454 /* This isn't called frequently so we get away with simply
1455 reallocating the color vector to the needed size, here. */
1458 (unsigned long *) xrealloc (img
->colors
,
1459 img
->ncolors
* sizeof *img
->colors
);
1460 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1461 result
= color
.pixel
;
1471 /***********************************************************************
1473 ***********************************************************************/
1475 static struct image
*search_image_cache
P_ ((struct frame
*, Lisp_Object
, unsigned));
1476 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1477 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1479 /* Return a new, initialized image cache that is allocated from the
1480 heap. Call free_image_cache to free an image cache. */
1482 struct image_cache
*
1485 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1488 bzero (c
, sizeof *c
);
1490 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1491 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1492 c
->buckets
= (struct image
**) xmalloc (size
);
1493 bzero (c
->buckets
, size
);
1498 /* Find an image matching SPEC in the cache, and return it. If no
1499 image is found, return NULL. */
1500 static struct image
*
1501 search_image_cache (f
, spec
, hash
)
1507 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1508 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1510 if (!c
) return NULL
;
1512 /* If the image spec does not specify a background color, the cached
1513 image must have the same background color as the current frame.
1514 The foreground color must also match, for the sake of monochrome
1517 In fact, we could ignore the foreground color matching condition
1518 for color images, or if the image spec specifies :foreground;
1519 similarly we could ignore the background color matching condition
1520 for formats that don't use transparency (such as jpeg), or if the
1521 image spec specifies :background. However, the extra memory
1522 usage is probably negligible in practice, so we don't bother. */
1524 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1525 if (img
->hash
== hash
1526 && !NILP (Fequal (img
->spec
, spec
))
1527 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1528 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1534 /* Search frame F for an image with spec SPEC, and free it. */
1537 uncache_image (f
, spec
)
1541 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1543 free_image (f
, img
);
1547 /* Free image cache of frame F. Be aware that X frames share images
1551 free_image_cache (f
)
1554 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1559 /* Cache should not be referenced by any frame when freed. */
1560 xassert (c
->refcount
== 0);
1562 for (i
= 0; i
< c
->used
; ++i
)
1563 free_image (f
, c
->images
[i
]);
1567 FRAME_IMAGE_CACHE (f
) = NULL
;
1572 /* Clear image cache of frame F. FILTER=t means free all images.
1573 FILTER=nil means clear only images that haven't been
1574 displayed for some time.
1575 Else, only free the images which have FILTER in their `dependencies'.
1576 Should be called from time to time to reduce the number of loaded images.
1577 If image-cache-eviction-delay is non-nil, this frees images in the cache
1578 which weren't displayed for at least that many seconds. */
1581 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1583 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1589 /* Block input so that we won't be interrupted by a SIGIO
1590 while being in an inconsistent state. */
1595 /* Filter image cache. */
1596 for (i
= 0; i
< c
->used
; ++i
)
1598 struct image
*img
= c
->images
[i
];
1599 if (img
&& (EQ (Qt
, filter
)
1600 || !NILP (Fmember (filter
, img
->dependencies
))))
1602 free_image (f
, img
);
1607 else if (INTEGERP (Vimage_cache_eviction_delay
))
1609 /* Free cache based on timestamp. */
1612 int delay
, nimages
= 0;
1614 for (i
= 0; i
< c
->used
; ++i
)
1618 /* If the number of cached images has grown unusually large,
1619 decrease the cache eviction delay (Bug#6230). */
1620 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1622 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1625 old
= EMACS_SECS (t
) - delay
;
1627 for (i
= 0; i
< c
->used
; ++i
)
1629 struct image
*img
= c
->images
[i
];
1630 if (img
&& img
->timestamp
< old
)
1632 free_image (f
, img
);
1638 /* We may be clearing the image cache because, for example,
1639 Emacs was iconified for a longer period of time. In that
1640 case, current matrices may still contain references to
1641 images freed above. So, clear these matrices. */
1644 Lisp_Object tail
, frame
;
1646 FOR_EACH_FRAME (tail
, frame
)
1648 struct frame
*f
= XFRAME (frame
);
1649 if (FRAME_IMAGE_CACHE (f
) == c
)
1650 clear_current_matrices (f
);
1653 ++windows_or_buffers_changed
;
1661 clear_image_caches (Lisp_Object filter
)
1663 /* FIXME: We want to do
1664 * struct terminal *t;
1665 * for (t = terminal_list; t; t = t->next_terminal)
1666 * clear_image_cache (t, filter); */
1667 Lisp_Object tail
, frame
;
1668 FOR_EACH_FRAME (tail
, frame
)
1669 if (FRAME_WINDOW_P (XFRAME (frame
)))
1670 clear_image_cache (XFRAME (frame
), filter
);
1673 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1675 doc
: /* Clear the image cache.
1676 FILTER nil or a frame means clear all images in the selected frame.
1677 FILTER t means clear the image caches of all frames.
1678 Anything else, means only clear those images which refer to FILTER,
1679 which is then usually a filename. */)
1683 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1684 clear_image_caches (filter
);
1686 clear_image_cache (check_x_frame (filter
), Qt
);
1692 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1694 doc
: /* Fush the image with specification SPEC on frame FRAME.
1695 This removes the image from the Emacs image cache. If SPEC specifies
1696 an image file, the next redisplay of this image will read from the
1697 current contents of that file.
1699 FRAME nil or omitted means use the selected frame.
1700 FRAME t means refresh the image on all frames. */)
1702 Lisp_Object spec
, frame
;
1704 if (!valid_image_p (spec
))
1705 error ("Invalid image specification");
1710 FOR_EACH_FRAME (tail
, frame
)
1712 struct frame
*f
= XFRAME (frame
);
1713 if (FRAME_WINDOW_P (f
))
1714 uncache_image (f
, spec
);
1718 uncache_image (check_x_frame (frame
), spec
);
1724 /* Compute masks and transform image IMG on frame F, as specified
1725 by the image's specification, */
1728 postprocess_image (f
, img
)
1732 /* Manipulation of the image's mask. */
1735 Lisp_Object conversion
, spec
;
1740 /* `:heuristic-mask t'
1742 means build a mask heuristically.
1743 `:heuristic-mask (R G B)'
1744 `:mask (heuristic (R G B))'
1745 means build a mask from color (R G B) in the
1748 means remove a mask, if any. */
1750 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1752 x_build_heuristic_mask (f
, img
, mask
);
1757 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1759 if (EQ (mask
, Qheuristic
))
1760 x_build_heuristic_mask (f
, img
, Qt
);
1761 else if (CONSP (mask
)
1762 && EQ (XCAR (mask
), Qheuristic
))
1764 if (CONSP (XCDR (mask
)))
1765 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1767 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1769 else if (NILP (mask
) && found_p
&& img
->mask
)
1771 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1772 img
->mask
= NO_PIXMAP
;
1777 /* Should we apply an image transformation algorithm? */
1778 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1779 if (EQ (conversion
, Qdisabled
))
1780 x_disable_image (f
, img
);
1781 else if (EQ (conversion
, Qlaplace
))
1783 else if (EQ (conversion
, Qemboss
))
1785 else if (CONSP (conversion
)
1786 && EQ (XCAR (conversion
), Qedge_detection
))
1789 tem
= XCDR (conversion
);
1791 x_edge_detection (f
, img
,
1792 Fplist_get (tem
, QCmatrix
),
1793 Fplist_get (tem
, QCcolor_adjustment
));
1799 /* Return the id of image with Lisp specification SPEC on frame F.
1800 SPEC must be a valid Lisp image specification (see valid_image_p). */
1803 lookup_image (f
, spec
)
1807 struct image_cache
*c
;
1810 struct gcpro gcpro1
;
1813 /* F must be a window-system frame, and SPEC must be a valid image
1815 xassert (FRAME_WINDOW_P (f
));
1816 xassert (valid_image_p (spec
));
1818 c
= FRAME_IMAGE_CACHE (f
);
1822 /* Look up SPEC in the hash table of the image cache. */
1823 hash
= sxhash (spec
, 0);
1824 img
= search_image_cache (f
, spec
, hash
);
1825 if (img
&& img
->load_failed_p
)
1827 free_image (f
, img
);
1831 /* If not found, create a new image and cache it. */
1834 extern Lisp_Object Qpostscript
;
1837 img
= make_image (spec
, hash
);
1838 cache_image (f
, img
);
1839 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1840 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1841 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1843 /* If we can't load the image, and we don't have a width and
1844 height, use some arbitrary width and height so that we can
1845 draw a rectangle for it. */
1846 if (img
->load_failed_p
)
1850 value
= image_spec_value (spec
, QCwidth
, NULL
);
1851 img
->width
= (INTEGERP (value
)
1852 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1853 value
= image_spec_value (spec
, QCheight
, NULL
);
1854 img
->height
= (INTEGERP (value
)
1855 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1859 /* Handle image type independent image attributes
1860 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1861 `:background COLOR'. */
1862 Lisp_Object ascent
, margin
, relief
, bg
;
1864 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1865 if (INTEGERP (ascent
))
1866 img
->ascent
= XFASTINT (ascent
);
1867 else if (EQ (ascent
, Qcenter
))
1868 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1870 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1871 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1872 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1873 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1874 && INTEGERP (XCDR (margin
)))
1876 if (XINT (XCAR (margin
)) > 0)
1877 img
->hmargin
= XFASTINT (XCAR (margin
));
1878 if (XINT (XCDR (margin
)) > 0)
1879 img
->vmargin
= XFASTINT (XCDR (margin
));
1882 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1883 if (INTEGERP (relief
))
1885 img
->relief
= XINT (relief
);
1886 img
->hmargin
+= eabs (img
->relief
);
1887 img
->vmargin
+= eabs (img
->relief
);
1890 if (! img
->background_valid
)
1892 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1896 = x_alloc_image_color (f
, img
, bg
,
1897 FRAME_BACKGROUND_PIXEL (f
));
1898 img
->background_valid
= 1;
1902 /* Do image transformations and compute masks, unless we
1903 don't have the image yet. */
1904 if (!EQ (*img
->type
->type
, Qpostscript
))
1905 postprocess_image (f
, img
);
1911 /* We're using IMG, so set its timestamp to `now'. */
1912 EMACS_GET_TIME (now
);
1913 img
->timestamp
= EMACS_SECS (now
);
1917 /* Value is the image id. */
1922 /* Cache image IMG in the image cache of frame F. */
1925 cache_image (f
, img
)
1929 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1932 /* Find a free slot in c->images. */
1933 for (i
= 0; i
< c
->used
; ++i
)
1934 if (c
->images
[i
] == NULL
)
1937 /* If no free slot found, maybe enlarge c->images. */
1938 if (i
== c
->used
&& c
->used
== c
->size
)
1941 c
->images
= (struct image
**) xrealloc (c
->images
,
1942 c
->size
* sizeof *c
->images
);
1945 /* Add IMG to c->images, and assign IMG an id. */
1951 /* Add IMG to the cache's hash table. */
1952 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1953 img
->next
= c
->buckets
[i
];
1955 img
->next
->prev
= img
;
1957 c
->buckets
[i
] = img
;
1961 /* Call FN on every image in the image cache of frame F. Used to mark
1962 Lisp Objects in the image cache. */
1964 /* Mark Lisp objects in image IMG. */
1970 mark_object (img
->spec
);
1971 mark_object (img
->dependencies
);
1973 if (!NILP (img
->data
.lisp_val
))
1974 mark_object (img
->data
.lisp_val
);
1979 mark_image_cache (struct image_cache
*c
)
1984 for (i
= 0; i
< c
->used
; ++i
)
1986 mark_image (c
->images
[i
]);
1992 /***********************************************************************
1993 X / NS / W32 support code
1994 ***********************************************************************/
1998 /* Macro for defining functions that will be loaded from image DLLs. */
1999 #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)()
2001 /* Macro for loading those image functions from the library. */
2002 #define LOAD_IMGLIB_FN(lib,func) { \
2003 fn_##func = (void *) GetProcAddress (lib, #func); \
2004 if (!fn_##func) return 0; \
2007 /* Load a DLL implementing an image type.
2008 The `image-library-alist' variable associates a symbol,
2009 identifying an image type, to a list of possible filenames.
2010 The function returns NULL if no library could be loaded for
2011 the given image type, or if the library was previously loaded;
2012 else the handle of the DLL. */
2014 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
2016 HMODULE library
= NULL
;
2018 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
2020 Lisp_Object dlls
= Fassq (type
, libraries
);
2023 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
2025 CHECK_STRING_CAR (dlls
);
2026 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
2034 #endif /* HAVE_NTGUI */
2036 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
2037 XImagePtr
*, Pixmap
*));
2038 static void x_destroy_x_image
P_ ((XImagePtr
));
2039 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
2042 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
2043 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
2044 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
2045 via xmalloc. Print error messages via image_error if an error
2046 occurs. Value is non-zero if successful.
2048 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
2049 should indicate the bit depth of the image. */
2052 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
2054 int width
, height
, depth
;
2058 #ifdef HAVE_X_WINDOWS
2059 Display
*display
= FRAME_X_DISPLAY (f
);
2060 Window window
= FRAME_X_WINDOW (f
);
2061 Screen
*screen
= FRAME_X_SCREEN (f
);
2063 xassert (interrupt_input_blocked
);
2066 depth
= DefaultDepthOfScreen (screen
);
2067 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
2068 depth
, ZPixmap
, 0, NULL
, width
, height
,
2069 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
2072 image_error ("Unable to allocate X image", Qnil
, Qnil
);
2076 /* Allocate image raster. */
2077 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
2079 /* Allocate a pixmap of the same size. */
2080 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2081 if (*pixmap
== NO_PIXMAP
)
2083 x_destroy_x_image (*ximg
);
2085 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2090 #endif /* HAVE_X_WINDOWS */
2094 BITMAPINFOHEADER
*header
;
2096 int scanline_width_bits
;
2098 int palette_colors
= 0;
2103 if (depth
!= 1 && depth
!= 4 && depth
!= 8
2104 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2106 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2110 scanline_width_bits
= width
* depth
;
2111 remainder
= scanline_width_bits
% 32;
2114 scanline_width_bits
+= 32 - remainder
;
2116 /* Bitmaps with a depth less than 16 need a palette. */
2117 /* BITMAPINFO structure already contains the first RGBQUAD. */
2119 palette_colors
= 1 << depth
- 1;
2121 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2124 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2128 header
= &((*ximg
)->info
.bmiHeader
);
2129 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
2130 header
->biSize
= sizeof (*header
);
2131 header
->biWidth
= width
;
2132 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2133 header
->biPlanes
= 1;
2134 header
->biBitCount
= depth
;
2135 header
->biCompression
= BI_RGB
;
2136 header
->biClrUsed
= palette_colors
;
2138 /* TODO: fill in palette. */
2141 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2142 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2143 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2144 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2145 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2146 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2147 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2148 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2151 hdc
= get_frame_dc (f
);
2153 /* Create a DIBSection and raster array for the bitmap,
2154 and store its handle in *pixmap. */
2155 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2156 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2157 /* casting avoids a GCC warning */
2158 (void **)&((*ximg
)->data
), NULL
, 0);
2160 /* Realize display palette and garbage all frames. */
2161 release_frame_dc (f
, hdc
);
2163 if (*pixmap
== NULL
)
2165 DWORD err
= GetLastError ();
2166 Lisp_Object errcode
;
2167 /* All system errors are < 10000, so the following is safe. */
2168 XSETINT (errcode
, (int) err
);
2169 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2170 x_destroy_x_image (*ximg
);
2176 #endif /* HAVE_NTGUI */
2179 *pixmap
= ns_image_for_XPM(width
, height
, depth
);
2183 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2192 /* Destroy XImage XIMG. Free XIMG->data. */
2195 x_destroy_x_image (ximg
)
2198 xassert (interrupt_input_blocked
);
2201 #ifdef HAVE_X_WINDOWS
2204 XDestroyImage (ximg
);
2205 #endif /* HAVE_X_WINDOWS */
2207 /* Data will be freed by DestroyObject. */
2210 #endif /* HAVE_NTGUI */
2212 ns_release_object(ximg
);
2213 #endif /* HAVE_NS */
2218 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2219 are width and height of both the image and pixmap. */
2222 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
2228 #ifdef HAVE_X_WINDOWS
2231 xassert (interrupt_input_blocked
);
2232 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2233 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2234 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2235 #endif /* HAVE_X_WINDOWS */
2238 #if 0 /* I don't think this is necessary looking at where it is used. */
2239 HDC hdc
= get_frame_dc (f
);
2240 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2241 release_frame_dc (f
, hdc
);
2243 #endif /* HAVE_NTGUI */
2246 xassert (ximg
== pixmap
);
2247 ns_retain_object(ximg
);
2252 /***********************************************************************
2254 ***********************************************************************/
2256 static unsigned char *slurp_file
P_ ((char *, int *));
2259 /* Find image file FILE. Look in data-directory/images, then
2260 x-bitmap-file-path. Value is the encoded full name of the file
2261 found, or nil if not found. */
2264 x_find_image_file (file
)
2267 Lisp_Object file_found
, search_path
;
2268 struct gcpro gcpro1
, gcpro2
;
2272 /* TODO I think this should use something like image-load-path
2273 instead. Unfortunately, that can contain non-string elements. */
2274 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2276 Vx_bitmap_file_path
);
2277 GCPRO2 (file_found
, search_path
);
2279 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2280 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2286 file_found
= ENCODE_FILE (file_found
);
2295 /* Read FILE into memory. Value is a pointer to a buffer allocated
2296 with xmalloc holding FILE's contents. Value is null if an error
2297 occurred. *SIZE is set to the size of the file. */
2299 static unsigned char *
2300 slurp_file (file
, size
)
2305 unsigned char *buf
= NULL
;
2308 if (stat (file
, &st
) == 0
2309 && (fp
= fopen (file
, "rb")) != NULL
2310 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2311 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2332 /***********************************************************************
2334 ***********************************************************************/
2336 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2337 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2338 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2339 unsigned char *, unsigned char *));
2340 static int xbm_image_p
P_ ((Lisp_Object object
));
2341 static int xbm_read_bitmap_data
P_ ((struct frame
*f
,
2342 unsigned char *, unsigned char *,
2343 int *, int *, unsigned char **, int));
2344 static int xbm_file_p
P_ ((Lisp_Object
));
2347 /* Indices of image specification fields in xbm_format, below. */
2349 enum xbm_keyword_index
2367 /* Vector of image_keyword structures describing the format
2368 of valid XBM image specifications. */
2370 static const struct image_keyword xbm_format
[XBM_LAST
] =
2372 {":type", IMAGE_SYMBOL_VALUE
, 1},
2373 {":file", IMAGE_STRING_VALUE
, 0},
2374 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2375 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2376 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2377 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2378 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2379 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2380 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2381 {":relief", IMAGE_INTEGER_VALUE
, 0},
2382 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2383 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2384 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2387 /* Structure describing the image type XBM. */
2389 static struct image_type xbm_type
=
2398 /* Tokens returned from xbm_scan. */
2407 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2408 A valid specification is a list starting with the symbol `image'
2409 The rest of the list is a property list which must contain an
2412 If the specification specifies a file to load, it must contain
2413 an entry `:file FILENAME' where FILENAME is a string.
2415 If the specification is for a bitmap loaded from memory it must
2416 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2417 WIDTH and HEIGHT are integers > 0. DATA may be:
2419 1. a string large enough to hold the bitmap data, i.e. it must
2420 have a size >= (WIDTH + 7) / 8 * HEIGHT
2422 2. a bool-vector of size >= WIDTH * HEIGHT
2424 3. a vector of strings or bool-vectors, one for each line of the
2427 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2428 may not be specified in this case because they are defined in the
2431 Both the file and data forms may contain the additional entries
2432 `:background COLOR' and `:foreground COLOR'. If not present,
2433 foreground and background of the frame on which the image is
2434 displayed is used. */
2437 xbm_image_p (object
)
2440 struct image_keyword kw
[XBM_LAST
];
2442 bcopy (xbm_format
, kw
, sizeof kw
);
2443 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2446 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2448 if (kw
[XBM_FILE
].count
)
2450 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2453 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2455 /* In-memory XBM file. */
2456 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2464 /* Entries for `:width', `:height' and `:data' must be present. */
2465 if (!kw
[XBM_WIDTH
].count
2466 || !kw
[XBM_HEIGHT
].count
2467 || !kw
[XBM_DATA
].count
)
2470 data
= kw
[XBM_DATA
].value
;
2471 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2472 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2474 /* Check type of data, and width and height against contents of
2480 /* Number of elements of the vector must be >= height. */
2481 if (XVECTOR (data
)->size
< height
)
2484 /* Each string or bool-vector in data must be large enough
2485 for one line of the image. */
2486 for (i
= 0; i
< height
; ++i
)
2488 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2493 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2496 else if (BOOL_VECTOR_P (elt
))
2498 if (XBOOL_VECTOR (elt
)->size
< width
)
2505 else if (STRINGP (data
))
2508 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2511 else if (BOOL_VECTOR_P (data
))
2513 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2524 /* Scan a bitmap file. FP is the stream to read from. Value is
2525 either an enumerator from enum xbm_token, or a character for a
2526 single-character token, or 0 at end of file. If scanning an
2527 identifier, store the lexeme of the identifier in SVAL. If
2528 scanning a number, store its value in *IVAL. */
2531 xbm_scan (s
, end
, sval
, ival
)
2532 unsigned char **s
, *end
;
2540 /* Skip white space. */
2541 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2546 else if (isdigit (c
))
2548 int value
= 0, digit
;
2550 if (c
== '0' && *s
< end
)
2553 if (c
== 'x' || c
== 'X')
2560 else if (c
>= 'a' && c
<= 'f')
2561 digit
= c
- 'a' + 10;
2562 else if (c
>= 'A' && c
<= 'F')
2563 digit
= c
- 'A' + 10;
2566 value
= 16 * value
+ digit
;
2569 else if (isdigit (c
))
2573 && (c
= *(*s
)++, isdigit (c
)))
2574 value
= 8 * value
+ c
- '0';
2581 && (c
= *(*s
)++, isdigit (c
)))
2582 value
= 10 * value
+ c
- '0';
2590 else if (isalpha (c
) || c
== '_')
2594 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2601 else if (c
== '/' && **s
== '*')
2603 /* C-style comment. */
2605 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2619 /* Create a Windows bitmap from X bitmap data. */
2621 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2623 static unsigned char swap_nibble
[16]
2624 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2625 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2626 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2627 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2629 unsigned char *bits
, *p
;
2632 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2633 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2634 bits
= (unsigned char *) alloca (height
* w2
);
2635 bzero (bits
, height
* w2
);
2636 for (i
= 0; i
< height
; i
++)
2639 for (j
= 0; j
< w1
; j
++)
2641 /* Bitswap XBM bytes to match how Windows does things. */
2642 unsigned char c
= *data
++;
2643 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2644 | (swap_nibble
[(c
>>4) & 0xf]));
2647 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2653 convert_mono_to_color_image (f
, img
, foreground
, background
)
2656 COLORREF foreground
, background
;
2658 HDC hdc
, old_img_dc
, new_img_dc
;
2659 HGDIOBJ old_prev
, new_prev
;
2662 hdc
= get_frame_dc (f
);
2663 old_img_dc
= CreateCompatibleDC (hdc
);
2664 new_img_dc
= CreateCompatibleDC (hdc
);
2665 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2666 release_frame_dc (f
, hdc
);
2667 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2668 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2669 /* Windows convention for mono bitmaps is black = background,
2670 white = foreground. */
2671 SetTextColor (new_img_dc
, background
);
2672 SetBkColor (new_img_dc
, foreground
);
2674 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2677 SelectObject (old_img_dc
, old_prev
);
2678 SelectObject (new_img_dc
, new_prev
);
2679 DeleteDC (old_img_dc
);
2680 DeleteDC (new_img_dc
);
2681 DeleteObject (img
->pixmap
);
2682 if (new_pixmap
== 0)
2683 fprintf (stderr
, "Failed to convert image to color.\n");
2685 img
->pixmap
= new_pixmap
;
2688 #define XBM_BIT_SHUFFLE(b) (~(b))
2692 #define XBM_BIT_SHUFFLE(b) (b)
2694 #endif /* HAVE_NTGUI */
2698 Create_Pixmap_From_Bitmap_Data (f
, img
, data
, fg
, bg
, non_default_colors
)
2702 RGB_PIXEL_COLOR fg
, bg
;
2703 int non_default_colors
;
2707 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2709 /* If colors were specified, transfer the bitmap to a color one. */
2710 if (non_default_colors
)
2711 convert_mono_to_color_image (f
, img
, fg
, bg
);
2713 #elif defined (HAVE_NS)
2714 img
->pixmap
= ns_image_from_XBM(data
, img
->width
, img
->height
);
2718 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2721 img
->width
, img
->height
,
2723 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2724 #endif /* !HAVE_NTGUI && !HAVE_NS */
2729 /* Replacement for XReadBitmapFileData which isn't available under old
2730 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2731 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2732 the image. Return in *DATA the bitmap data allocated with xmalloc.
2733 Value is non-zero if successful. DATA null means just test if
2734 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2735 is non-zero, inhibit the call to image_error when the image size is
2736 invalid (the bitmap remains unread). */
2739 xbm_read_bitmap_data (f
, contents
, end
, width
, height
, data
, inhibit_image_error
)
2741 unsigned char *contents
, *end
;
2742 int *width
, *height
;
2743 unsigned char **data
;
2744 int inhibit_image_error
;
2746 unsigned char *s
= contents
;
2747 char buffer
[BUFSIZ
];
2750 int bytes_per_line
, i
, nbytes
;
2756 LA1 = xbm_scan (&s, end, buffer, &value)
2758 #define expect(TOKEN) \
2759 if (LA1 != (TOKEN)) \
2764 #define expect_ident(IDENT) \
2765 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2770 *width
= *height
= -1;
2773 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2775 /* Parse defines for width, height and hot-spots. */
2779 expect_ident ("define");
2780 expect (XBM_TK_IDENT
);
2782 if (LA1
== XBM_TK_NUMBER
)
2784 char *p
= strrchr (buffer
, '_');
2785 p
= p
? p
+ 1 : buffer
;
2786 if (strcmp (p
, "width") == 0)
2788 else if (strcmp (p
, "height") == 0)
2791 expect (XBM_TK_NUMBER
);
2794 if (!check_image_size (f
, *width
, *height
))
2796 if (!inhibit_image_error
)
2797 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2800 else if (data
== NULL
)
2803 /* Parse bits. Must start with `static'. */
2804 expect_ident ("static");
2805 if (LA1
== XBM_TK_IDENT
)
2807 if (strcmp (buffer
, "unsigned") == 0)
2810 expect_ident ("char");
2812 else if (strcmp (buffer
, "short") == 0)
2816 if (*width
% 16 && *width
% 16 < 9)
2819 else if (strcmp (buffer
, "char") == 0)
2827 expect (XBM_TK_IDENT
);
2833 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2834 nbytes
= bytes_per_line
* *height
;
2835 p
= *data
= (unsigned char *) xmalloc (nbytes
);
2839 for (i
= 0; i
< nbytes
; i
+= 2)
2842 expect (XBM_TK_NUMBER
);
2844 *p
++ = XBM_BIT_SHUFFLE (val
);
2845 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2846 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2848 if (LA1
== ',' || LA1
== '}')
2856 for (i
= 0; i
< nbytes
; ++i
)
2859 expect (XBM_TK_NUMBER
);
2861 *p
++ = XBM_BIT_SHUFFLE (val
);
2863 if (LA1
== ',' || LA1
== '}')
2888 /* Load XBM image IMG which will be displayed on frame F from buffer
2889 CONTENTS. END is the end of the buffer. Value is non-zero if
2893 xbm_load_image (f
, img
, contents
, end
)
2896 unsigned char *contents
, *end
;
2899 unsigned char *data
;
2902 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2906 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2907 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2908 int non_default_colors
= 0;
2911 xassert (img
->width
> 0 && img
->height
> 0);
2913 /* Get foreground and background colors, maybe allocate colors. */
2914 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2917 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2918 non_default_colors
= 1;
2920 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2923 background
= x_alloc_image_color (f
, img
, value
, background
);
2924 img
->background
= background
;
2925 img
->background_valid
= 1;
2926 non_default_colors
= 1;
2929 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2930 foreground
, background
,
2931 non_default_colors
);
2934 if (img
->pixmap
== NO_PIXMAP
)
2936 x_clear_image (f
, img
);
2937 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2943 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2949 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2956 return (STRINGP (data
)
2957 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2958 (SDATA (data
) + SBYTES (data
)),
2963 /* Fill image IMG which is used on frame F with pixmap data. Value is
2964 non-zero if successful. */
2972 Lisp_Object file_name
;
2974 xassert (xbm_image_p (img
->spec
));
2976 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2977 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2978 if (STRINGP (file_name
))
2981 unsigned char *contents
;
2983 struct gcpro gcpro1
;
2985 file
= x_find_image_file (file_name
);
2987 if (!STRINGP (file
))
2989 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2994 contents
= slurp_file (SDATA (file
), &size
);
2995 if (contents
== NULL
)
2997 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3002 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3007 struct image_keyword fmt
[XBM_LAST
];
3009 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3010 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3011 int non_default_colors
= 0;
3014 int in_memory_file_p
= 0;
3016 /* See if data looks like an in-memory XBM file. */
3017 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3018 in_memory_file_p
= xbm_file_p (data
);
3020 /* Parse the image specification. */
3021 bcopy (xbm_format
, fmt
, sizeof fmt
);
3022 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3025 /* Get specified width, and height. */
3026 if (!in_memory_file_p
)
3028 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3029 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3030 xassert (img
->width
> 0 && img
->height
> 0);
3033 /* Get foreground and background colors, maybe allocate colors. */
3034 if (fmt
[XBM_FOREGROUND
].count
3035 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3037 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3039 non_default_colors
= 1;
3042 if (fmt
[XBM_BACKGROUND
].count
3043 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3045 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3047 non_default_colors
= 1;
3050 if (in_memory_file_p
)
3051 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3060 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3062 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3063 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3065 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3067 bcopy (SDATA (line
), p
, nbytes
);
3069 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3072 else if (STRINGP (data
))
3073 bits
= SDATA (data
);
3075 bits
= XBOOL_VECTOR (data
)->data
;
3081 /* Windows mono bitmaps are reversed compared with X. */
3082 invertedBits
= bits
;
3083 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
3085 bits
= (char *) alloca(nbytes
);
3086 for (i
= 0; i
< nbytes
; i
++)
3087 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
3090 /* Create the pixmap. */
3092 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3093 foreground
, background
,
3094 non_default_colors
);
3099 image_error ("Unable to create pixmap for XBM image `%s'",
3101 x_clear_image (f
, img
);
3111 /***********************************************************************
3113 ***********************************************************************/
3115 #if defined (HAVE_XPM) || defined (HAVE_NS)
3117 static int xpm_image_p
P_ ((Lisp_Object object
));
3118 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3119 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3121 #endif /* HAVE_XPM || HAVE_NS */
3125 /* Indicate to xpm.h that we don't have Xlib. */
3127 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3128 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3129 #define XColor xpm_XColor
3130 #define XImage xpm_XImage
3131 #define Display xpm_Display
3132 #define PIXEL_ALREADY_TYPEDEFED
3133 #include "X11/xpm.h"
3138 #undef PIXEL_ALREADY_TYPEDEFED
3140 #include "X11/xpm.h"
3141 #endif /* HAVE_NTGUI */
3142 #endif /* HAVE_XPM */
3144 #if defined (HAVE_XPM) || defined (HAVE_NS)
3145 /* The symbol `xpm' identifying XPM-format images. */
3149 /* Indices of image specification fields in xpm_format, below. */
3151 enum xpm_keyword_index
3167 /* Vector of image_keyword structures describing the format
3168 of valid XPM image specifications. */
3170 static const struct image_keyword xpm_format
[XPM_LAST
] =
3172 {":type", IMAGE_SYMBOL_VALUE
, 1},
3173 {":file", IMAGE_STRING_VALUE
, 0},
3174 {":data", IMAGE_STRING_VALUE
, 0},
3175 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3176 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3177 {":relief", IMAGE_INTEGER_VALUE
, 0},
3178 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3179 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3180 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3181 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3182 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3185 /* Structure describing the image type XPM. */
3187 static struct image_type xpm_type
=
3196 #ifdef HAVE_X_WINDOWS
3198 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3199 functions for allocating image colors. Our own functions handle
3200 color allocation failures more gracefully than the ones on the XPM
3203 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3204 #define ALLOC_XPM_COLORS
3206 #endif /* HAVE_X_WINDOWS */
3208 #ifdef ALLOC_XPM_COLORS
3210 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3211 static void xpm_free_color_cache
P_ ((void));
3212 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3213 static int xpm_color_bucket
P_ ((char *));
3214 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3217 /* An entry in a hash table used to cache color definitions of named
3218 colors. This cache is necessary to speed up XPM image loading in
3219 case we do color allocations ourselves. Without it, we would need
3220 a call to XParseColor per pixel in the image. */
3222 struct xpm_cached_color
3224 /* Next in collision chain. */
3225 struct xpm_cached_color
*next
;
3227 /* Color definition (RGB and pixel color). */
3234 /* The hash table used for the color cache, and its bucket vector
3237 #define XPM_COLOR_CACHE_BUCKETS 1001
3238 struct xpm_cached_color
**xpm_color_cache
;
3240 /* Initialize the color cache. */
3243 xpm_init_color_cache (f
, attrs
)
3245 XpmAttributes
*attrs
;
3247 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3248 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3249 memset (xpm_color_cache
, 0, nbytes
);
3250 init_color_table ();
3252 if (attrs
->valuemask
& XpmColorSymbols
)
3257 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3258 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3259 attrs
->colorsymbols
[i
].value
, &color
))
3261 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3263 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3268 /* Free the color cache. */
3271 xpm_free_color_cache ()
3273 struct xpm_cached_color
*p
, *next
;
3276 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3277 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3283 xfree (xpm_color_cache
);
3284 xpm_color_cache
= NULL
;
3285 free_color_table ();
3288 /* Return the bucket index for color named COLOR_NAME in the color
3292 xpm_color_bucket (color_name
)
3298 for (s
= color_name
; *s
; ++s
)
3300 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3304 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3305 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3308 static struct xpm_cached_color
*
3309 xpm_cache_color (f
, color_name
, color
, bucket
)
3316 struct xpm_cached_color
*p
;
3319 bucket
= xpm_color_bucket (color_name
);
3321 nbytes
= sizeof *p
+ strlen (color_name
);
3322 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3323 strcpy (p
->name
, color_name
);
3325 p
->next
= xpm_color_cache
[bucket
];
3326 xpm_color_cache
[bucket
] = p
;
3330 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3331 return the cached definition in *COLOR. Otherwise, make a new
3332 entry in the cache and allocate the color. Value is zero if color
3333 allocation failed. */
3336 xpm_lookup_color (f
, color_name
, color
)
3341 struct xpm_cached_color
*p
;
3342 int h
= xpm_color_bucket (color_name
);
3344 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3345 if (strcmp (p
->name
, color_name
) == 0)
3350 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3353 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3355 p
= xpm_cache_color (f
, color_name
, color
, h
);
3357 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3358 with transparency, and it's useful. */
3359 else if (strcmp ("opaque", color_name
) == 0)
3361 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3362 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3363 p
= xpm_cache_color (f
, color_name
, color
, h
);
3370 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3371 CLOSURE is a pointer to the frame on which we allocate the
3372 color. Return in *COLOR the allocated color. Value is non-zero
3376 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3383 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3387 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3388 is a pointer to the frame on which we allocate the color. Value is
3389 non-zero if successful. */
3392 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3402 #endif /* ALLOC_XPM_COLORS */
3407 /* XPM library details. */
3409 DEF_IMGLIB_FN (XpmFreeAttributes
);
3410 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3411 DEF_IMGLIB_FN (XpmReadFileToImage
);
3412 DEF_IMGLIB_FN (XImageFree
);
3415 init_xpm_functions (Lisp_Object libraries
)
3419 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3422 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3423 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3424 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3425 LOAD_IMGLIB_FN (library
, XImageFree
);
3429 #endif /* HAVE_NTGUI */
3432 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3433 for XPM images. Such a list must consist of conses whose car and
3437 xpm_valid_color_symbols_p (color_symbols
)
3438 Lisp_Object color_symbols
;
3440 while (CONSP (color_symbols
))
3442 Lisp_Object sym
= XCAR (color_symbols
);
3444 || !STRINGP (XCAR (sym
))
3445 || !STRINGP (XCDR (sym
)))
3447 color_symbols
= XCDR (color_symbols
);
3450 return NILP (color_symbols
);
3454 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3457 xpm_image_p (object
)
3460 struct image_keyword fmt
[XPM_LAST
];
3461 bcopy (xpm_format
, fmt
, sizeof fmt
);
3462 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3463 /* Either `:file' or `:data' must be present. */
3464 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3465 /* Either no `:color-symbols' or it's a list of conses
3466 whose car and cdr are strings. */
3467 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3468 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3471 #endif /* HAVE_XPM || HAVE_NS */
3473 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3475 x_create_bitmap_from_xpm_data (f
, bits
)
3479 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3481 XpmAttributes attrs
;
3482 Pixmap bitmap
, mask
;
3484 bzero (&attrs
, sizeof attrs
);
3486 attrs
.visual
= FRAME_X_VISUAL (f
);
3487 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3488 attrs
.valuemask
|= XpmVisual
;
3489 attrs
.valuemask
|= XpmColormap
;
3491 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3492 bits
, &bitmap
, &mask
, &attrs
);
3493 if (rc
!= XpmSuccess
)
3495 XpmFreeAttributes (&attrs
);
3499 id
= x_allocate_bitmap_record (f
);
3500 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3501 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3502 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3503 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3504 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3505 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3506 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3507 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3509 XpmFreeAttributes (&attrs
);
3512 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3514 /* Load image IMG which will be displayed on frame F. Value is
3515 non-zero if successful. */
3525 XpmAttributes attrs
;
3526 Lisp_Object specified_file
, color_symbols
;
3529 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3530 #endif /* HAVE_NTGUI */
3532 /* Configure the XPM lib. Use the visual of frame F. Allocate
3533 close colors. Return colors allocated. */
3534 bzero (&attrs
, sizeof attrs
);
3537 attrs
.visual
= FRAME_X_VISUAL (f
);
3538 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3539 attrs
.valuemask
|= XpmVisual
;
3540 attrs
.valuemask
|= XpmColormap
;
3541 #endif /* HAVE_NTGUI */
3543 #ifdef ALLOC_XPM_COLORS
3544 /* Allocate colors with our own functions which handle
3545 failing color allocation more gracefully. */
3546 attrs
.color_closure
= f
;
3547 attrs
.alloc_color
= xpm_alloc_color
;
3548 attrs
.free_colors
= xpm_free_colors
;
3549 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3550 #else /* not ALLOC_XPM_COLORS */
3551 /* Let the XPM lib allocate colors. */
3552 attrs
.valuemask
|= XpmReturnAllocPixels
;
3553 #ifdef XpmAllocCloseColors
3554 attrs
.alloc_close_colors
= 1;
3555 attrs
.valuemask
|= XpmAllocCloseColors
;
3556 #else /* not XpmAllocCloseColors */
3557 attrs
.closeness
= 600;
3558 attrs
.valuemask
|= XpmCloseness
;
3559 #endif /* not XpmAllocCloseColors */
3560 #endif /* ALLOC_XPM_COLORS */
3562 /* If image specification contains symbolic color definitions, add
3563 these to `attrs'. */
3564 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3565 if (CONSP (color_symbols
))
3568 XpmColorSymbol
*xpm_syms
;
3571 attrs
.valuemask
|= XpmColorSymbols
;
3573 /* Count number of symbols. */
3574 attrs
.numsymbols
= 0;
3575 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3578 /* Allocate an XpmColorSymbol array. */
3579 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3580 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3581 bzero (xpm_syms
, size
);
3582 attrs
.colorsymbols
= xpm_syms
;
3584 /* Fill the color symbol array. */
3585 for (tail
= color_symbols
, i
= 0;
3587 ++i
, tail
= XCDR (tail
))
3589 Lisp_Object name
= XCAR (XCAR (tail
));
3590 Lisp_Object color
= XCDR (XCAR (tail
));
3591 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3592 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3593 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3594 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3598 /* Create a pixmap for the image, either from a file, or from a
3599 string buffer containing data in the same format as an XPM file. */
3600 #ifdef ALLOC_XPM_COLORS
3601 xpm_init_color_cache (f
, &attrs
);
3604 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3608 HDC frame_dc
= get_frame_dc (f
);
3609 hdc
= CreateCompatibleDC (frame_dc
);
3610 release_frame_dc (f
, frame_dc
);
3612 #endif /* HAVE_NTGUI */
3614 if (STRINGP (specified_file
))
3616 Lisp_Object file
= x_find_image_file (specified_file
);
3617 if (!STRINGP (file
))
3619 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3624 /* XpmReadFileToPixmap is not available in the Windows port of
3625 libxpm. But XpmReadFileToImage almost does what we want. */
3626 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3627 &xpm_image
, &xpm_mask
,
3630 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3631 SDATA (file
), &img
->pixmap
, &img
->mask
,
3633 #endif /* HAVE_NTGUI */
3637 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3639 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3640 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3641 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3642 &xpm_image
, &xpm_mask
,
3645 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3647 &img
->pixmap
, &img
->mask
,
3649 #endif /* HAVE_NTGUI */
3652 if (rc
== XpmSuccess
)
3654 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3655 img
->colors
= colors_in_color_table (&img
->ncolors
);
3656 #else /* not ALLOC_XPM_COLORS */
3660 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3661 plus some duplicate attributes. */
3662 if (xpm_image
&& xpm_image
->bitmap
)
3664 img
->pixmap
= xpm_image
->bitmap
;
3665 /* XImageFree in libXpm frees XImage struct without destroying
3666 the bitmap, which is what we want. */
3667 fn_XImageFree (xpm_image
);
3669 if (xpm_mask
&& xpm_mask
->bitmap
)
3671 /* The mask appears to be inverted compared with what we expect.
3672 TODO: invert our expectations. See other places where we
3673 have to invert bits because our idea of masks is backwards. */
3675 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3677 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3678 SelectObject (hdc
, old_obj
);
3680 img
->mask
= xpm_mask
->bitmap
;
3681 fn_XImageFree (xpm_mask
);
3686 #endif /* HAVE_NTGUI */
3688 /* Remember allocated colors. */
3689 img
->ncolors
= attrs
.nalloc_pixels
;
3690 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3691 * sizeof *img
->colors
);
3692 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3694 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3695 #ifdef DEBUG_X_COLORS
3696 register_color (img
->colors
[i
]);
3699 #endif /* not ALLOC_XPM_COLORS */
3701 img
->width
= attrs
.width
;
3702 img
->height
= attrs
.height
;
3703 xassert (img
->width
> 0 && img
->height
> 0);
3705 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3707 fn_XpmFreeAttributes (&attrs
);
3709 XpmFreeAttributes (&attrs
);
3710 #endif /* HAVE_NTGUI */
3716 #endif /* HAVE_NTGUI */
3721 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3724 case XpmFileInvalid
:
3725 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3729 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3732 case XpmColorFailed
:
3733 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3737 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3742 #ifdef ALLOC_XPM_COLORS
3743 xpm_free_color_cache ();
3745 return rc
== XpmSuccess
;
3748 #endif /* HAVE_XPM */
3750 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3752 /* XPM support functions for NS where libxpm is not available.
3753 Only XPM version 3 (without any extensions) is supported. */
3755 static int xpm_scan
P_ ((const unsigned char **, const unsigned char *,
3756 const unsigned char **, int *));
3757 static Lisp_Object xpm_make_color_table_v
3758 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3759 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
3760 static void xpm_put_color_table_v
P_ ((Lisp_Object
, const unsigned char *,
3762 static Lisp_Object xpm_get_color_table_v
P_ ((Lisp_Object
,
3763 const unsigned char *, int));
3764 static Lisp_Object xpm_make_color_table_h
3765 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3766 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
3767 static void xpm_put_color_table_h
P_ ((Lisp_Object
, const unsigned char *,
3769 static Lisp_Object xpm_get_color_table_h
P_ ((Lisp_Object
,
3770 const unsigned char *, int));
3771 static int xpm_str_to_color_key
P_ ((const char *));
3772 static int xpm_load_image
P_ ((struct frame
*, struct image
*,
3773 const unsigned char *, const unsigned char *));
3775 /* Tokens returned from xpm_scan. */
3784 /* Scan an XPM data and return a character (< 256) or a token defined
3785 by enum xpm_token above. *S and END are the start (inclusive) and
3786 the end (exclusive) addresses of the data, respectively. Advance
3787 *S while scanning. If token is either XPM_TK_IDENT or
3788 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3789 length of the corresponding token, respectively. */
3792 xpm_scan (s
, end
, beg
, len
)
3793 const unsigned char **s
, *end
, **beg
;
3800 /* Skip white-space. */
3801 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3804 /* gnus-pointer.xpm uses '-' in its identifier.
3805 sb-dir-plus.xpm uses '+' in its identifier. */
3806 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3810 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3813 return XPM_TK_IDENT
;
3818 while (*s
< end
&& **s
!= '"')
3823 return XPM_TK_STRING
;
3827 if (*s
< end
&& **s
== '*')
3829 /* C-style comment. */
3833 while (*s
< end
&& *(*s
)++ != '*')
3836 while (*s
< end
&& **s
!= '/');
3850 /* Functions for color table lookup in XPM data. A key is a string
3851 specifying the color of each pixel in XPM data. A value is either
3852 an integer that specifies a pixel color, Qt that specifies
3853 transparency, or Qnil for the unspecified color. If the length of
3854 the key string is one, a vector is used as a table. Otherwise, a
3855 hash table is used. */
3858 xpm_make_color_table_v (put_func
, get_func
)
3859 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3860 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
3862 *put_func
= xpm_put_color_table_v
;
3863 *get_func
= xpm_get_color_table_v
;
3864 return Fmake_vector (make_number (256), Qnil
);
3868 xpm_put_color_table_v (color_table
, chars_start
, chars_len
, color
)
3869 Lisp_Object color_table
;
3870 const unsigned char *chars_start
;
3874 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3878 xpm_get_color_table_v (color_table
, chars_start
, chars_len
)
3879 Lisp_Object color_table
;
3880 const unsigned char *chars_start
;
3883 return XVECTOR (color_table
)->contents
[*chars_start
];
3887 xpm_make_color_table_h (put_func
, get_func
)
3888 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3889 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
3891 *put_func
= xpm_put_color_table_h
;
3892 *get_func
= xpm_get_color_table_h
;
3893 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3894 make_float (DEFAULT_REHASH_SIZE
),
3895 make_float (DEFAULT_REHASH_THRESHOLD
),
3900 xpm_put_color_table_h (color_table
, chars_start
, chars_len
, color
)
3901 Lisp_Object color_table
;
3902 const unsigned char *chars_start
;
3906 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3908 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3910 hash_lookup (table
, chars
, &hash_code
);
3911 hash_put (table
, chars
, color
, hash_code
);
3915 xpm_get_color_table_h (color_table
, chars_start
, chars_len
)
3916 Lisp_Object color_table
;
3917 const unsigned char *chars_start
;
3920 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3921 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3924 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3927 enum xpm_color_key
{
3935 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3938 xpm_str_to_color_key (s
)
3944 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3946 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3952 xpm_load_image (f
, img
, contents
, end
)
3955 const unsigned char *contents
, *end
;
3957 const unsigned char *s
= contents
, *beg
, *str
;
3958 unsigned char buffer
[BUFSIZ
];
3959 int width
, height
, x
, y
;
3960 int num_colors
, chars_per_pixel
;
3962 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3963 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3964 Lisp_Object frame
, color_symbols
, color_table
;
3965 int best_key
, have_mask
= 0;
3966 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3969 LA1 = xpm_scan (&s, end, &beg, &len)
3971 #define expect(TOKEN) \
3972 if (LA1 != (TOKEN)) \
3977 #define expect_ident(IDENT) \
3978 if (LA1 == XPM_TK_IDENT \
3979 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3984 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3988 expect_ident ("static");
3989 expect_ident ("char");
3991 expect (XPM_TK_IDENT
);
3996 expect (XPM_TK_STRING
);
3999 memcpy (buffer
, beg
, len
);
4001 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
4002 &num_colors
, &chars_per_pixel
) != 4
4003 || width
<= 0 || height
<= 0
4004 || num_colors
<= 0 || chars_per_pixel
<= 0)
4007 if (!check_image_size (f
, width
, height
))
4009 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
4015 XSETFRAME (frame
, f
);
4016 if (!NILP (Fxw_display_color_p (frame
)))
4017 best_key
= XPM_COLOR_KEY_C
;
4018 else if (!NILP (Fx_display_grayscale_p (frame
)))
4019 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
4020 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
4022 best_key
= XPM_COLOR_KEY_M
;
4024 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
4025 if (chars_per_pixel
== 1)
4026 color_table
= xpm_make_color_table_v (&put_color_table
,
4029 color_table
= xpm_make_color_table_h (&put_color_table
,
4032 while (num_colors
-- > 0)
4034 unsigned char *color
, *max_color
;
4035 int key
, next_key
, max_key
= 0;
4036 Lisp_Object symbol_color
= Qnil
, color_val
;
4039 expect (XPM_TK_STRING
);
4040 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
4042 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
4043 buffer
[len
- chars_per_pixel
] = '\0';
4045 str
= strtok (buffer
, " \t");
4048 key
= xpm_str_to_color_key (str
);
4053 color
= strtok (NULL
, " \t");
4057 while ((str
= strtok (NULL
, " \t")) != NULL
)
4059 next_key
= xpm_str_to_color_key (str
);
4062 color
[strlen (color
)] = ' ';
4065 if (key
== XPM_COLOR_KEY_S
)
4067 if (NILP (symbol_color
))
4068 symbol_color
= build_string (color
);
4070 else if (max_key
< key
&& key
<= best_key
)
4080 if (!NILP (color_symbols
) && !NILP (symbol_color
))
4082 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
4084 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
4086 if (xstrcasecmp (SDATA (XCDR (specified_color
)), "None") == 0)
4088 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
4090 color_val
= make_number (cdef
.pixel
);
4093 if (NILP (color_val
) && max_key
> 0)
4095 if (xstrcasecmp (max_color
, "None") == 0)
4097 else if (x_defined_color (f
, max_color
, &cdef
, 0))
4098 color_val
= make_number (cdef
.pixel
);
4100 if (!NILP (color_val
))
4101 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
4106 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4107 &ximg
, &img
->pixmap
)
4109 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
4110 &mask_img
, &img
->mask
)
4114 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4118 for (y
= 0; y
< height
; y
++)
4120 expect (XPM_TK_STRING
);
4122 if (len
< width
* chars_per_pixel
)
4124 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
4126 Lisp_Object color_val
=
4127 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4129 XPutPixel (ximg
, x
, y
,
4130 (INTEGERP (color_val
) ? XINT (color_val
)
4131 : FRAME_FOREGROUND_PIXEL (f
)));
4133 XPutPixel (mask_img
, x
, y
,
4134 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4135 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4137 if (EQ(color_val
, Qt
))
4138 ns_set_alpha(ximg
, x
, y
, 0);
4146 img
->height
= height
;
4148 /* Maybe fill in the background field while we have ximg handy. */
4149 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4150 IMAGE_BACKGROUND (img
, f
, ximg
);
4152 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4153 x_destroy_x_image (ximg
);
4157 /* Fill in the background_transparent field while we have the
4159 image_background_transparent (img
, f
, mask_img
);
4161 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4162 x_destroy_x_image (mask_img
);
4166 x_destroy_x_image (mask_img
);
4167 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4168 img
->mask
= NO_PIXMAP
;
4174 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4176 x_destroy_x_image (ximg
);
4177 x_destroy_x_image (mask_img
);
4178 x_clear_image (f
, img
);
4192 Lisp_Object file_name
;
4194 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4195 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4196 if (STRINGP (file_name
))
4199 unsigned char *contents
;
4201 struct gcpro gcpro1
;
4203 file
= x_find_image_file (file_name
);
4205 if (!STRINGP (file
))
4207 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4212 contents
= slurp_file (SDATA (file
), &size
);
4213 if (contents
== NULL
)
4215 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4220 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4228 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4229 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4230 SDATA (data
) + SBYTES (data
));
4236 #endif /* HAVE_NS && !HAVE_XPM */
4240 /***********************************************************************
4242 ***********************************************************************/
4244 #ifdef COLOR_TABLE_SUPPORT
4246 /* An entry in the color table mapping an RGB color to a pixel color. */
4251 unsigned long pixel
;
4253 /* Next in color table collision list. */
4254 struct ct_color
*next
;
4257 /* The bucket vector size to use. Must be prime. */
4261 /* Value is a hash of the RGB color given by R, G, and B. */
4263 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4265 /* The color hash table. */
4267 struct ct_color
**ct_table
;
4269 /* Number of entries in the color table. */
4271 int ct_colors_allocated
;
4273 /* Initialize the color table. */
4278 int size
= CT_SIZE
* sizeof (*ct_table
);
4279 ct_table
= (struct ct_color
**) xmalloc (size
);
4280 bzero (ct_table
, size
);
4281 ct_colors_allocated
= 0;
4285 /* Free memory associated with the color table. */
4291 struct ct_color
*p
, *next
;
4293 for (i
= 0; i
< CT_SIZE
; ++i
)
4294 for (p
= ct_table
[i
]; p
; p
= next
)
4305 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4306 entry for that color already is in the color table, return the
4307 pixel color of that entry. Otherwise, allocate a new color for R,
4308 G, B, and make an entry in the color table. */
4310 static unsigned long
4311 lookup_rgb_color (f
, r
, g
, b
)
4315 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4316 int i
= hash
% CT_SIZE
;
4318 Display_Info
*dpyinfo
;
4320 /* Handle TrueColor visuals specially, which improves performance by
4321 two orders of magnitude. Freeing colors on TrueColor visuals is
4322 a nop, and pixel colors specify RGB values directly. See also
4323 the Xlib spec, chapter 3.1. */
4324 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4325 if (dpyinfo
->red_bits
> 0)
4327 unsigned long pr
, pg
, pb
;
4329 /* Apply gamma-correction like normal color allocation does. */
4333 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4334 gamma_correct (f
, &color
);
4335 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4338 /* Scale down RGB values to the visual's bits per RGB, and shift
4339 them to the right position in the pixel color. Note that the
4340 original RGB values are 16-bit values, as usual in X. */
4341 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4342 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4343 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4345 /* Assemble the pixel color. */
4346 return pr
| pg
| pb
;
4349 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4350 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4356 #ifdef HAVE_X_WINDOWS
4365 cmap
= FRAME_X_COLORMAP (f
);
4366 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4369 ++ct_colors_allocated
;
4370 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4374 p
->pixel
= color
.pixel
;
4375 p
->next
= ct_table
[i
];
4379 return FRAME_FOREGROUND_PIXEL (f
);
4384 color
= PALETTERGB (r
, g
, b
);
4386 color
= RGB_TO_ULONG (r
, g
, b
);
4387 #endif /* HAVE_NTGUI */
4388 ++ct_colors_allocated
;
4389 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4394 p
->next
= ct_table
[i
];
4396 #endif /* HAVE_X_WINDOWS */
4404 /* Look up pixel color PIXEL which is used on frame F in the color
4405 table. If not already present, allocate it. Value is PIXEL. */
4407 static unsigned long
4408 lookup_pixel_color (f
, pixel
)
4410 unsigned long pixel
;
4412 int i
= pixel
% CT_SIZE
;
4415 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4416 if (p
->pixel
== pixel
)
4425 #ifdef HAVE_X_WINDOWS
4426 cmap
= FRAME_X_COLORMAP (f
);
4427 color
.pixel
= pixel
;
4428 x_query_color (f
, &color
);
4429 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4432 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4433 color
.pixel
= pixel
;
4434 XQueryColor (NULL
, cmap
, &color
);
4435 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4437 #endif /* HAVE_X_WINDOWS */
4441 ++ct_colors_allocated
;
4443 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4448 p
->next
= ct_table
[i
];
4452 return FRAME_FOREGROUND_PIXEL (f
);
4458 /* Value is a vector of all pixel colors contained in the color table,
4459 allocated via xmalloc. Set *N to the number of colors. */
4461 static unsigned long *
4462 colors_in_color_table (n
)
4467 unsigned long *colors
;
4469 if (ct_colors_allocated
== 0)
4476 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4478 *n
= ct_colors_allocated
;
4480 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4481 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4482 colors
[j
++] = p
->pixel
;
4488 #else /* COLOR_TABLE_SUPPORT */
4490 static unsigned long
4491 lookup_rgb_color (f
, r
, g
, b
)
4495 unsigned long pixel
;
4498 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4499 #endif /* HAVE_NTGUI */
4502 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4503 #endif /* HAVE_NS */
4511 #endif /* COLOR_TABLE_SUPPORT */
4514 /***********************************************************************
4516 ***********************************************************************/
4518 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4519 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4520 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4523 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4524 #endif /* HAVE_NTGUI */
4526 /* Non-zero means draw a cross on images having `:conversion
4529 int cross_disabled_images
;
4531 /* Edge detection matrices for different edge-detection
4534 static int emboss_matrix
[9] = {
4536 2, -1, 0, /* y - 1 */
4538 0, 1, -2 /* y + 1 */
4541 static int laplace_matrix
[9] = {
4543 1, 0, 0, /* y - 1 */
4545 0, 0, -1 /* y + 1 */
4548 /* Value is the intensity of the color whose red/green/blue values
4551 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4554 /* On frame F, return an array of XColor structures describing image
4555 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4556 non-zero means also fill the red/green/blue members of the XColor
4557 structures. Value is a pointer to the array of XColors structures,
4558 allocated with xmalloc; it must be freed by the caller. */
4561 x_to_xcolors (f
, img
, rgb_p
)
4568 XImagePtr_or_DC ximg
;
4572 #endif /* HAVE_NTGUI */
4574 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4577 /* Get the X image IMG->pixmap. */
4578 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4579 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4581 /* Load the image into a memory device context. */
4582 hdc
= get_frame_dc (f
);
4583 ximg
= CreateCompatibleDC (hdc
);
4584 release_frame_dc (f
, hdc
);
4585 prev
= SelectObject (ximg
, img
->pixmap
);
4586 #endif /* HAVE_NTGUI */
4588 /* Fill the `pixel' members of the XColor array. I wished there
4589 were an easy and portable way to circumvent XGetPixel. */
4591 for (y
= 0; y
< img
->height
; ++y
)
4595 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4596 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4597 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4599 x_query_colors (f
, row
, img
->width
);
4603 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4605 /* W32_TODO: palette support needed here? */
4606 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4609 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4610 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4611 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4614 #endif /* HAVE_X_WINDOWS */
4617 Destroy_Image (ximg
, prev
);
4624 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4625 created with CreateDIBSection, with the pointer to the bit values
4626 stored in ximg->data. */
4629 XPutPixel (ximg
, x
, y
, color
)
4634 int width
= ximg
->info
.bmiHeader
.biWidth
;
4635 int height
= ximg
->info
.bmiHeader
.biHeight
;
4636 unsigned char * pixel
;
4638 /* True color images. */
4639 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4641 int rowbytes
= width
* 3;
4642 /* Ensure scanlines are aligned on 4 byte boundaries. */
4644 rowbytes
+= 4 - (rowbytes
% 4);
4646 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4647 /* Windows bitmaps are in BGR order. */
4648 *pixel
= GetBValue (color
);
4649 *(pixel
+ 1) = GetGValue (color
);
4650 *(pixel
+ 2) = GetRValue (color
);
4652 /* Monochrome images. */
4653 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4655 int rowbytes
= width
/ 8;
4656 /* Ensure scanlines are aligned on 4 byte boundaries. */
4658 rowbytes
+= 4 - (rowbytes
% 4);
4659 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4660 /* Filter out palette info. */
4661 if (color
& 0x00ffffff)
4662 *pixel
= *pixel
| (1 << x
% 8);
4664 *pixel
= *pixel
& ~(1 << x
% 8);
4667 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4670 #endif /* HAVE_NTGUI */
4672 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4673 RGB members are set. F is the frame on which this all happens.
4674 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4677 x_from_xcolors (f
, img
, colors
)
4683 XImagePtr oimg
= NULL
;
4687 init_color_table ();
4689 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4692 for (y
= 0; y
< img
->height
; ++y
)
4693 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4695 unsigned long pixel
;
4696 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4697 XPutPixel (oimg
, x
, y
, pixel
);
4701 x_clear_image_1 (f
, img
, 1, 0, 1);
4703 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4704 x_destroy_x_image (oimg
);
4705 img
->pixmap
= pixmap
;
4706 #ifdef COLOR_TABLE_SUPPORT
4707 img
->colors
= colors_in_color_table (&img
->ncolors
);
4708 free_color_table ();
4709 #endif /* COLOR_TABLE_SUPPORT */
4713 /* On frame F, perform edge-detection on image IMG.
4715 MATRIX is a nine-element array specifying the transformation
4716 matrix. See emboss_matrix for an example.
4718 COLOR_ADJUST is a color adjustment added to each pixel of the
4722 x_detect_edges (f
, img
, matrix
, color_adjust
)
4725 int matrix
[9], color_adjust
;
4727 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4731 for (i
= sum
= 0; i
< 9; ++i
)
4732 sum
+= eabs (matrix
[i
]);
4734 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4736 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4738 for (y
= 0; y
< img
->height
; ++y
)
4740 p
= COLOR (new, 0, y
);
4741 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4742 p
= COLOR (new, img
->width
- 1, y
);
4743 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4746 for (x
= 1; x
< img
->width
- 1; ++x
)
4748 p
= COLOR (new, x
, 0);
4749 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4750 p
= COLOR (new, x
, img
->height
- 1);
4751 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4754 for (y
= 1; y
< img
->height
- 1; ++y
)
4756 p
= COLOR (new, 1, y
);
4758 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4760 int r
, g
, b
, y1
, x1
;
4763 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
4764 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
4767 XColor
*t
= COLOR (colors
, x1
, y1
);
4768 r
+= matrix
[i
] * t
->red
;
4769 g
+= matrix
[i
] * t
->green
;
4770 b
+= matrix
[i
] * t
->blue
;
4773 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4774 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4775 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4776 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4781 x_from_xcolors (f
, img
, new);
4787 /* Perform the pre-defined `emboss' edge-detection on image IMG
4795 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4799 /* Transform image IMG which is used on frame F with a Laplace
4800 edge-detection algorithm. The result is an image that can be used
4801 to draw disabled buttons, for example. */
4808 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4812 /* Perform edge-detection on image IMG on frame F, with specified
4813 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4815 MATRIX must be either
4817 - a list of at least 9 numbers in row-major form
4818 - a vector of at least 9 numbers
4820 COLOR_ADJUST nil means use a default; otherwise it must be a
4824 x_edge_detection (f
, img
, matrix
, color_adjust
)
4827 Lisp_Object matrix
, color_adjust
;
4835 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4836 ++i
, matrix
= XCDR (matrix
))
4837 trans
[i
] = XFLOATINT (XCAR (matrix
));
4839 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4841 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4842 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4845 if (NILP (color_adjust
))
4846 color_adjust
= make_number (0xffff / 2);
4848 if (i
== 9 && NUMBERP (color_adjust
))
4849 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
4853 /* Transform image IMG on frame F so that it looks disabled. */
4856 x_disable_image (f
, img
)
4860 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4862 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4864 int n_planes
= dpyinfo
->n_planes
;
4865 #endif /* HAVE_NTGUI */
4869 /* Color (or grayscale). Convert to gray, and equalize. Just
4870 drawing such images with a stipple can look very odd, so
4871 we're using this method instead. */
4872 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4874 const int h
= 15000;
4875 const int l
= 30000;
4877 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4881 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4882 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4883 p
->red
= p
->green
= p
->blue
= i2
;
4886 x_from_xcolors (f
, img
, colors
);
4889 /* Draw a cross over the disabled image, if we must or if we
4891 if (n_planes
< 2 || cross_disabled_images
)
4894 Display
*dpy
= FRAME_X_DISPLAY (f
);
4897 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4899 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4901 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4902 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4903 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4904 img
->width
- 1, img
->height
- 1);
4905 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4911 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4912 XSetForeground (dpy
, gc
, MaskForeground (f
));
4913 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4914 img
->width
- 1, img
->height
- 1);
4915 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4919 #endif /* !HAVE_NS */
4924 hdc
= get_frame_dc (f
);
4925 bmpdc
= CreateCompatibleDC (hdc
);
4926 release_frame_dc (f
, hdc
);
4928 prev
= SelectObject (bmpdc
, img
->pixmap
);
4930 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4931 MoveToEx (bmpdc
, 0, 0, NULL
);
4932 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4933 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4934 LineTo (bmpdc
, img
->width
- 1, 0);
4938 SelectObject (bmpdc
, img
->mask
);
4939 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4940 MoveToEx (bmpdc
, 0, 0, NULL
);
4941 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4942 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4943 LineTo (bmpdc
, img
->width
- 1, 0);
4945 SelectObject (bmpdc
, prev
);
4947 #endif /* HAVE_NTGUI */
4952 /* Build a mask for image IMG which is used on frame F. FILE is the
4953 name of an image file, for error messages. HOW determines how to
4954 determine the background color of IMG. If it is a list '(R G B)',
4955 with R, G, and B being integers >= 0, take that as the color of the
4956 background. Otherwise, determine the background color of IMG
4957 heuristically. Value is non-zero if successful. */
4960 x_build_heuristic_mask (f
, img
, how
)
4965 XImagePtr_or_DC ximg
;
4973 #endif /* HAVE_NTGUI */
4974 int x
, y
, rc
, use_img_background
;
4975 unsigned long bg
= 0;
4979 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4980 img
->mask
= NO_PIXMAP
;
4981 img
->background_transparent_valid
= 0;
4986 /* Create an image and pixmap serving as mask. */
4987 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4988 &mask_img
, &img
->mask
);
4991 #endif /* !HAVE_NS */
4993 /* Get the X image of IMG->pixmap. */
4994 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4995 img
->width
, img
->height
,
4998 /* Create the bit array serving as mask. */
4999 row_width
= (img
->width
+ 7) / 8;
5000 mask_img
= xmalloc (row_width
* img
->height
);
5001 bzero (mask_img
, row_width
* img
->height
);
5003 /* Create a memory device context for IMG->pixmap. */
5004 frame_dc
= get_frame_dc (f
);
5005 ximg
= CreateCompatibleDC (frame_dc
);
5006 release_frame_dc (f
, frame_dc
);
5007 prev
= SelectObject (ximg
, img
->pixmap
);
5008 #endif /* HAVE_NTGUI */
5010 /* Determine the background color of ximg. If HOW is `(R G B)'
5011 take that as color. Otherwise, use the image's background color. */
5012 use_img_background
= 1;
5018 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
5020 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
5024 if (i
== 3 && NILP (how
))
5026 char color_name
[30];
5027 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
5030 0x00ffffff & /* Filter out palette info. */
5031 #endif /* HAVE_NTGUI */
5032 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
5033 use_img_background
= 0;
5037 if (use_img_background
)
5038 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
5040 /* Set all bits in mask_img to 1 whose color in ximg is different
5041 from the background color bg. */
5043 for (y
= 0; y
< img
->height
; ++y
)
5044 for (x
= 0; x
< img
->width
; ++x
)
5046 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
5047 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
5049 if (XGetPixel (ximg
, x
, y
) == bg
)
5050 ns_set_alpha(ximg
, x
, y
, 0);
5051 #endif /* HAVE_NS */
5053 /* Fill in the background_transparent field while we have the mask handy. */
5054 image_background_transparent (img
, f
, mask_img
);
5056 /* Put mask_img into img->mask. */
5057 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5058 x_destroy_x_image (mask_img
);
5059 #endif /* !HAVE_NS */
5061 for (y
= 0; y
< img
->height
; ++y
)
5062 for (x
= 0; x
< img
->width
; ++x
)
5064 COLORREF p
= GetPixel (ximg
, x
, y
);
5066 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
5069 /* Create the mask image. */
5070 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
5072 /* Fill in the background_transparent field while we have the mask handy. */
5073 SelectObject (ximg
, img
->mask
);
5074 image_background_transparent (img
, f
, ximg
);
5076 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
5078 #endif /* HAVE_NTGUI */
5080 Destroy_Image (ximg
, prev
);
5086 /***********************************************************************
5087 PBM (mono, gray, color)
5088 ***********************************************************************/
5090 static int pbm_image_p
P_ ((Lisp_Object object
));
5091 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
5092 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
5094 /* The symbol `pbm' identifying images of this type. */
5098 /* Indices of image specification fields in gs_format, below. */
5100 enum pbm_keyword_index
5116 /* Vector of image_keyword structures describing the format
5117 of valid user-defined image specifications. */
5119 static const struct image_keyword pbm_format
[PBM_LAST
] =
5121 {":type", IMAGE_SYMBOL_VALUE
, 1},
5122 {":file", IMAGE_STRING_VALUE
, 0},
5123 {":data", IMAGE_STRING_VALUE
, 0},
5124 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5125 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5126 {":relief", IMAGE_INTEGER_VALUE
, 0},
5127 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5128 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5129 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5130 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
5131 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5134 /* Structure describing the image type `pbm'. */
5136 static struct image_type pbm_type
=
5146 /* Return non-zero if OBJECT is a valid PBM image specification. */
5149 pbm_image_p (object
)
5152 struct image_keyword fmt
[PBM_LAST
];
5154 bcopy (pbm_format
, fmt
, sizeof fmt
);
5156 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5159 /* Must specify either :data or :file. */
5160 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5164 /* Scan a decimal number from *S and return it. Advance *S while
5165 reading the number. END is the end of the string. Value is -1 at
5169 pbm_scan_number (s
, end
)
5170 unsigned char **s
, *end
;
5172 int c
= 0, val
= -1;
5176 /* Skip white-space. */
5177 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5182 /* Skip comment to end of line. */
5183 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5186 else if (isdigit (c
))
5188 /* Read decimal number. */
5190 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5191 val
= 10 * val
+ c
- '0';
5203 #if 0 /* Unused. ++kfs */
5205 /* Read FILE into memory. Value is a pointer to a buffer allocated
5206 with xmalloc holding FILE's contents. Value is null if an error
5207 occurred. *SIZE is set to the size of the file. */
5210 pbm_read_file (file
, size
)
5218 if (stat (SDATA (file
), &st
) == 0
5219 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5220 && (buf
= (char *) xmalloc (st
.st_size
),
5221 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5240 #endif /* HAVE_NTGUI */
5242 /* Load PBM image IMG for use on frame F. */
5250 int width
, height
, max_color_idx
= 0;
5252 Lisp_Object file
, specified_file
;
5253 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5254 struct gcpro gcpro1
;
5255 unsigned char *contents
= NULL
;
5256 unsigned char *end
, *p
;
5259 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5263 if (STRINGP (specified_file
))
5265 file
= x_find_image_file (specified_file
);
5266 if (!STRINGP (file
))
5268 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5273 contents
= slurp_file (SDATA (file
), &size
);
5274 if (contents
== NULL
)
5276 image_error ("Error reading `%s'", file
, Qnil
);
5282 end
= contents
+ size
;
5287 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5289 end
= p
+ SBYTES (data
);
5292 /* Check magic number. */
5293 if (end
- p
< 2 || *p
++ != 'P')
5295 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5305 raw_p
= 0, type
= PBM_MONO
;
5309 raw_p
= 0, type
= PBM_GRAY
;
5313 raw_p
= 0, type
= PBM_COLOR
;
5317 raw_p
= 1, type
= PBM_MONO
;
5321 raw_p
= 1, type
= PBM_GRAY
;
5325 raw_p
= 1, type
= PBM_COLOR
;
5329 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5333 /* Read width, height, maximum color-component. Characters
5334 starting with `#' up to the end of a line are ignored. */
5335 width
= pbm_scan_number (&p
, end
);
5336 height
= pbm_scan_number (&p
, end
);
5338 if (type
!= PBM_MONO
)
5340 max_color_idx
= pbm_scan_number (&p
, end
);
5341 if (max_color_idx
> 65535 || max_color_idx
< 0)
5343 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5348 if (!check_image_size (f
, width
, height
))
5350 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5354 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5355 &ximg
, &img
->pixmap
))
5358 /* Initialize the color hash table. */
5359 init_color_table ();
5361 if (type
== PBM_MONO
)
5364 struct image_keyword fmt
[PBM_LAST
];
5365 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5366 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5368 /* Parse the image specification. */
5369 bcopy (pbm_format
, fmt
, sizeof fmt
);
5370 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5372 /* Get foreground and background colors, maybe allocate colors. */
5373 if (fmt
[PBM_FOREGROUND
].count
5374 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5375 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5376 if (fmt
[PBM_BACKGROUND
].count
5377 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5379 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5380 img
->background
= bg
;
5381 img
->background_valid
= 1;
5384 for (y
= 0; y
< height
; ++y
)
5385 for (x
= 0; x
< width
; ++x
)
5393 x_destroy_x_image (ximg
);
5394 x_clear_image (f
, img
);
5395 image_error ("Invalid image size in image `%s'",
5405 g
= pbm_scan_number (&p
, end
);
5407 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5412 int expected_size
= height
* width
;
5413 if (max_color_idx
> 255)
5415 if (type
== PBM_COLOR
)
5418 if (raw_p
&& p
+ expected_size
> end
)
5420 x_destroy_x_image (ximg
);
5421 x_clear_image (f
, img
);
5422 image_error ("Invalid image size in image `%s'",
5427 for (y
= 0; y
< height
; ++y
)
5428 for (x
= 0; x
< width
; ++x
)
5432 if (type
== PBM_GRAY
&& raw_p
)
5435 if (max_color_idx
> 255)
5436 r
= g
= b
= r
* 256 + *p
++;
5438 else if (type
== PBM_GRAY
)
5439 r
= g
= b
= pbm_scan_number (&p
, end
);
5443 if (max_color_idx
> 255)
5446 if (max_color_idx
> 255)
5449 if (max_color_idx
> 255)
5454 r
= pbm_scan_number (&p
, end
);
5455 g
= pbm_scan_number (&p
, end
);
5456 b
= pbm_scan_number (&p
, end
);
5459 if (r
< 0 || g
< 0 || b
< 0)
5461 x_destroy_x_image (ximg
);
5462 image_error ("Invalid pixel value in image `%s'",
5467 /* RGB values are now in the range 0..max_color_idx.
5468 Scale this to the range 0..0xffff supported by X. */
5469 r
= (double) r
* 65535 / max_color_idx
;
5470 g
= (double) g
* 65535 / max_color_idx
;
5471 b
= (double) b
* 65535 / max_color_idx
;
5472 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5476 #ifdef COLOR_TABLE_SUPPORT
5477 /* Store in IMG->colors the colors allocated for the image, and
5478 free the color table. */
5479 img
->colors
= colors_in_color_table (&img
->ncolors
);
5480 free_color_table ();
5481 #endif /* COLOR_TABLE_SUPPORT */
5484 img
->height
= height
;
5486 /* Maybe fill in the background field while we have ximg handy. */
5488 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5489 /* Casting avoids a GCC warning. */
5490 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5492 /* Put the image into a pixmap. */
5493 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5494 x_destroy_x_image (ximg
);
5496 /* X and W32 versions did it here, MAC version above. ++kfs
5498 img->height = height; */
5506 /***********************************************************************
5508 ***********************************************************************/
5510 #if defined (HAVE_PNG) || defined (HAVE_NS)
5512 /* Function prototypes. */
5514 static int png_image_p
P_ ((Lisp_Object object
));
5515 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
5517 /* The symbol `png' identifying images of this type. */
5521 /* Indices of image specification fields in png_format, below. */
5523 enum png_keyword_index
5538 /* Vector of image_keyword structures describing the format
5539 of valid user-defined image specifications. */
5541 static const struct image_keyword png_format
[PNG_LAST
] =
5543 {":type", IMAGE_SYMBOL_VALUE
, 1},
5544 {":data", IMAGE_STRING_VALUE
, 0},
5545 {":file", IMAGE_STRING_VALUE
, 0},
5546 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5547 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5548 {":relief", IMAGE_INTEGER_VALUE
, 0},
5549 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5550 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5551 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5552 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5555 /* Structure describing the image type `png'. */
5557 static struct image_type png_type
=
5566 /* Return non-zero if OBJECT is a valid PNG image specification. */
5569 png_image_p (object
)
5572 struct image_keyword fmt
[PNG_LAST
];
5573 bcopy (png_format
, fmt
, sizeof fmt
);
5575 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5578 /* Must specify either the :data or :file keyword. */
5579 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5582 #endif /* HAVE_PNG || HAVE_NS */
5588 /* PNG library details. */
5590 DEF_IMGLIB_FN (png_get_io_ptr
);
5591 DEF_IMGLIB_FN (png_sig_cmp
);
5592 DEF_IMGLIB_FN (png_create_read_struct
);
5593 DEF_IMGLIB_FN (png_create_info_struct
);
5594 DEF_IMGLIB_FN (png_destroy_read_struct
);
5595 DEF_IMGLIB_FN (png_set_read_fn
);
5596 DEF_IMGLIB_FN (png_set_sig_bytes
);
5597 DEF_IMGLIB_FN (png_read_info
);
5598 DEF_IMGLIB_FN (png_get_IHDR
);
5599 DEF_IMGLIB_FN (png_get_valid
);
5600 DEF_IMGLIB_FN (png_set_strip_16
);
5601 DEF_IMGLIB_FN (png_set_expand
);
5602 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5603 DEF_IMGLIB_FN (png_set_background
);
5604 DEF_IMGLIB_FN (png_get_bKGD
);
5605 DEF_IMGLIB_FN (png_read_update_info
);
5606 DEF_IMGLIB_FN (png_get_channels
);
5607 DEF_IMGLIB_FN (png_get_rowbytes
);
5608 DEF_IMGLIB_FN (png_read_image
);
5609 DEF_IMGLIB_FN (png_read_end
);
5610 DEF_IMGLIB_FN (png_error
);
5613 init_png_functions (Lisp_Object libraries
)
5617 /* Try loading libpng under probable names. */
5618 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5621 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5622 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5623 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5624 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5625 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5626 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5627 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5628 LOAD_IMGLIB_FN (library
, png_read_info
);
5629 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5630 LOAD_IMGLIB_FN (library
, png_get_valid
);
5631 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5632 LOAD_IMGLIB_FN (library
, png_set_expand
);
5633 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5634 LOAD_IMGLIB_FN (library
, png_set_background
);
5635 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5636 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5637 LOAD_IMGLIB_FN (library
, png_get_channels
);
5638 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5639 LOAD_IMGLIB_FN (library
, png_read_image
);
5640 LOAD_IMGLIB_FN (library
, png_read_end
);
5641 LOAD_IMGLIB_FN (library
, png_error
);
5646 #define fn_png_get_io_ptr png_get_io_ptr
5647 #define fn_png_sig_cmp png_sig_cmp
5648 #define fn_png_create_read_struct png_create_read_struct
5649 #define fn_png_create_info_struct png_create_info_struct
5650 #define fn_png_destroy_read_struct png_destroy_read_struct
5651 #define fn_png_set_read_fn png_set_read_fn
5652 #define fn_png_set_sig_bytes png_set_sig_bytes
5653 #define fn_png_read_info png_read_info
5654 #define fn_png_get_IHDR png_get_IHDR
5655 #define fn_png_get_valid png_get_valid
5656 #define fn_png_set_strip_16 png_set_strip_16
5657 #define fn_png_set_expand png_set_expand
5658 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5659 #define fn_png_set_background png_set_background
5660 #define fn_png_get_bKGD png_get_bKGD
5661 #define fn_png_read_update_info png_read_update_info
5662 #define fn_png_get_channels png_get_channels
5663 #define fn_png_get_rowbytes png_get_rowbytes
5664 #define fn_png_read_image png_read_image
5665 #define fn_png_read_end png_read_end
5666 #define fn_png_error png_error
5668 #endif /* HAVE_NTGUI */
5670 /* Error and warning handlers installed when the PNG library
5674 my_png_error (png_ptr
, msg
)
5675 png_struct
*png_ptr
;
5678 xassert (png_ptr
!= NULL
);
5679 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5680 longjmp (png_ptr
->jmpbuf
, 1);
5685 my_png_warning (png_ptr
, msg
)
5686 png_struct
*png_ptr
;
5689 xassert (png_ptr
!= NULL
);
5690 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5693 /* Memory source for PNG decoding. */
5695 struct png_memory_storage
5697 unsigned char *bytes
; /* The data */
5698 size_t len
; /* How big is it? */
5699 int index
; /* Where are we? */
5703 /* Function set as reader function when reading PNG image from memory.
5704 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5705 bytes from the input to DATA. */
5708 png_read_from_memory (png_ptr
, data
, length
)
5709 png_structp png_ptr
;
5713 struct png_memory_storage
*tbr
5714 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5716 if (length
> tbr
->len
- tbr
->index
)
5717 fn_png_error (png_ptr
, "Read error");
5719 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
5720 tbr
->index
= tbr
->index
+ length
;
5724 /* Function set as reader function when reading PNG image from a file.
5725 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5726 bytes from the input to DATA. */
5729 png_read_from_file (png_ptr
, data
, length
)
5730 png_structp png_ptr
;
5734 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5736 if (fread (data
, 1, length
, fp
) < length
)
5737 fn_png_error (png_ptr
, "Read error");
5741 /* Load PNG image IMG for use on frame F. Value is non-zero if
5749 Lisp_Object file
, specified_file
;
5750 Lisp_Object specified_data
;
5752 XImagePtr ximg
, mask_img
= NULL
;
5753 struct gcpro gcpro1
;
5754 png_struct
*png_ptr
= NULL
;
5755 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5756 FILE *volatile fp
= NULL
;
5758 png_byte
* volatile pixels
= NULL
;
5759 png_byte
** volatile rows
= NULL
;
5760 png_uint_32 width
, height
;
5761 int bit_depth
, color_type
, interlace_type
;
5763 png_uint_32 row_bytes
;
5765 struct png_memory_storage tbr
; /* Data to be read */
5767 /* Find out what file to load. */
5768 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5769 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5773 if (NILP (specified_data
))
5775 file
= x_find_image_file (specified_file
);
5776 if (!STRINGP (file
))
5778 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5783 /* Open the image file. */
5784 fp
= fopen (SDATA (file
), "rb");
5787 image_error ("Cannot open image file `%s'", file
, Qnil
);
5792 /* Check PNG signature. */
5793 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5794 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5796 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5804 /* Read from memory. */
5805 tbr
.bytes
= SDATA (specified_data
);
5806 tbr
.len
= SBYTES (specified_data
);
5809 /* Check PNG signature. */
5810 if (tbr
.len
< sizeof sig
5811 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5813 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5818 /* Need to skip past the signature. */
5819 tbr
.bytes
+= sizeof (sig
);
5822 /* Initialize read and info structs for PNG lib. Casting return
5823 value avoids a GCC warning on W32. */
5824 png_ptr
= (png_structp
)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5829 if (fp
) fclose (fp
);
5834 /* Casting return value avoids a GCC warning on W32. */
5835 info_ptr
= (png_infop
)fn_png_create_info_struct (png_ptr
);
5838 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5839 if (fp
) fclose (fp
);
5844 /* Casting return value avoids a GCC warning on W32. */
5845 end_info
= (png_infop
)fn_png_create_info_struct (png_ptr
);
5848 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5849 if (fp
) fclose (fp
);
5854 /* Set error jump-back. We come back here when the PNG library
5855 detects an error. */
5856 if (setjmp (png_ptr
->jmpbuf
))
5860 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5863 if (fp
) fclose (fp
);
5868 /* Read image info. */
5869 if (!NILP (specified_data
))
5870 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5872 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5874 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5875 fn_png_read_info (png_ptr
, info_ptr
);
5876 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5877 &interlace_type
, NULL
, NULL
);
5879 if (!check_image_size (f
, width
, height
))
5881 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5884 /* If image contains simply transparency data, we prefer to
5885 construct a clipping mask. */
5886 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5891 /* This function is easier to write if we only have to handle
5892 one data format: RGB or RGBA with 8 bits per channel. Let's
5893 transform other formats into that format. */
5895 /* Strip more than 8 bits per channel. */
5896 if (bit_depth
== 16)
5897 fn_png_set_strip_16 (png_ptr
);
5899 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5901 fn_png_set_expand (png_ptr
);
5903 /* Convert grayscale images to RGB. */
5904 if (color_type
== PNG_COLOR_TYPE_GRAY
5905 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5906 fn_png_set_gray_to_rgb (png_ptr
);
5908 /* Handle alpha channel by combining the image with a background
5909 color. Do this only if a real alpha channel is supplied. For
5910 simple transparency, we prefer a clipping mask. */
5913 /* png_color_16 *image_bg; */
5914 Lisp_Object specified_bg
5915 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5916 int shift
= (bit_depth
== 16) ? 0 : 8;
5918 if (STRINGP (specified_bg
))
5919 /* The user specified `:background', use that. */
5922 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
5924 png_color_16 user_bg
;
5926 bzero (&user_bg
, sizeof user_bg
);
5927 user_bg
.red
= color
.red
>> shift
;
5928 user_bg
.green
= color
.green
>> shift
;
5929 user_bg
.blue
= color
.blue
>> shift
;
5931 fn_png_set_background (png_ptr
, &user_bg
,
5932 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5937 /* We use the current frame background, ignoring any default
5938 background color set by the image. */
5939 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5941 png_color_16 frame_background
;
5943 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5944 x_query_color (f
, &color
);
5946 bzero (&frame_background
, sizeof frame_background
);
5947 frame_background
.red
= color
.red
>> shift
;
5948 frame_background
.green
= color
.green
>> shift
;
5949 frame_background
.blue
= color
.blue
>> shift
;
5950 #endif /* HAVE_X_WINDOWS */
5952 fn_png_set_background (png_ptr
, &frame_background
,
5953 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5957 /* Update info structure. */
5958 fn_png_read_update_info (png_ptr
, info_ptr
);
5960 /* Get number of channels. Valid values are 1 for grayscale images
5961 and images with a palette, 2 for grayscale images with transparency
5962 information (alpha channel), 3 for RGB images, and 4 for RGB
5963 images with alpha channel, i.e. RGBA. If conversions above were
5964 sufficient we should only have 3 or 4 channels here. */
5965 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5966 xassert (channels
== 3 || channels
== 4);
5968 /* Number of bytes needed for one row of the image. */
5969 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5971 /* Allocate memory for the image. */
5972 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5973 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5974 for (i
= 0; i
< height
; ++i
)
5975 rows
[i
] = pixels
+ i
* row_bytes
;
5977 /* Read the entire image. */
5978 fn_png_read_image (png_ptr
, rows
);
5979 fn_png_read_end (png_ptr
, info_ptr
);
5986 /* Create the X image and pixmap. */
5987 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5991 /* Create an image and pixmap serving as mask if the PNG image
5992 contains an alpha channel. */
5995 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5996 &mask_img
, &img
->mask
))
5998 x_destroy_x_image (ximg
);
5999 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
6000 img
->pixmap
= NO_PIXMAP
;
6004 /* Fill the X image and mask from PNG data. */
6005 init_color_table ();
6007 for (y
= 0; y
< height
; ++y
)
6009 png_byte
*p
= rows
[y
];
6011 for (x
= 0; x
< width
; ++x
)
6018 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
6019 /* An alpha channel, aka mask channel, associates variable
6020 transparency with an image. Where other image formats
6021 support binary transparency---fully transparent or fully
6022 opaque---PNG allows up to 254 levels of partial transparency.
6023 The PNG library implements partial transparency by combining
6024 the image with a specified background color.
6026 I'm not sure how to handle this here nicely: because the
6027 background on which the image is displayed may change, for
6028 real alpha channel support, it would be necessary to create
6029 a new image for each possible background.
6031 What I'm doing now is that a mask is created if we have
6032 boolean transparency information. Otherwise I'm using
6033 the frame's background color to combine the image with. */
6038 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
6044 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6045 /* Set IMG's background color from the PNG image, unless the user
6049 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
6051 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
6052 img
->background_valid
= 1;
6056 #ifdef COLOR_TABLE_SUPPORT
6057 /* Remember colors allocated for this image. */
6058 img
->colors
= colors_in_color_table (&img
->ncolors
);
6059 free_color_table ();
6060 #endif /* COLOR_TABLE_SUPPORT */
6063 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6068 img
->height
= height
;
6070 /* Maybe fill in the background field while we have ximg handy.
6071 Casting avoids a GCC warning. */
6072 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6074 /* Put the image into the pixmap, then free the X image and its buffer. */
6075 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6076 x_destroy_x_image (ximg
);
6078 /* Same for the mask. */
6081 /* Fill in the background_transparent field while we have the
6082 mask handy. Casting avoids a GCC warning. */
6083 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
6085 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
6086 x_destroy_x_image (mask_img
);
6093 #else /* HAVE_PNG */
6097 png_load (struct frame
*f
, struct image
*img
)
6099 return ns_load_image(f
, img
,
6100 image_spec_value (img
->spec
, QCfile
, NULL
),
6101 image_spec_value (img
->spec
, QCdata
, NULL
));
6103 #endif /* HAVE_NS */
6106 #endif /* !HAVE_PNG */
6110 /***********************************************************************
6112 ***********************************************************************/
6114 #if defined (HAVE_JPEG) || defined (HAVE_NS)
6116 static int jpeg_image_p
P_ ((Lisp_Object object
));
6117 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
6119 /* The symbol `jpeg' identifying images of this type. */
6123 /* Indices of image specification fields in gs_format, below. */
6125 enum jpeg_keyword_index
6134 JPEG_HEURISTIC_MASK
,
6140 /* Vector of image_keyword structures describing the format
6141 of valid user-defined image specifications. */
6143 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
6145 {":type", IMAGE_SYMBOL_VALUE
, 1},
6146 {":data", IMAGE_STRING_VALUE
, 0},
6147 {":file", IMAGE_STRING_VALUE
, 0},
6148 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6149 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6150 {":relief", IMAGE_INTEGER_VALUE
, 0},
6151 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6152 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6153 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6154 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6157 /* Structure describing the image type `jpeg'. */
6159 static struct image_type jpeg_type
=
6168 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6171 jpeg_image_p (object
)
6174 struct image_keyword fmt
[JPEG_LAST
];
6176 bcopy (jpeg_format
, fmt
, sizeof fmt
);
6178 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6181 /* Must specify either the :data or :file keyword. */
6182 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6185 #endif /* HAVE_JPEG || HAVE_NS */
6189 /* Work around a warning about HAVE_STDLIB_H being redefined in
6191 #ifdef HAVE_STDLIB_H
6192 #define HAVE_STDLIB_H_1
6193 #undef HAVE_STDLIB_H
6194 #endif /* HAVE_STLIB_H */
6196 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6197 /* In older releases of the jpeg library, jpeglib.h will define boolean
6198 differently depending on __WIN32__, so make sure it is defined. */
6202 #include <jpeglib.h>
6205 #ifdef HAVE_STLIB_H_1
6206 #define HAVE_STDLIB_H 1
6211 /* JPEG library details. */
6212 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6213 DEF_IMGLIB_FN (jpeg_start_decompress
);
6214 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6215 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6216 DEF_IMGLIB_FN (jpeg_read_header
);
6217 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6218 DEF_IMGLIB_FN (jpeg_std_error
);
6219 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6222 init_jpeg_functions (Lisp_Object libraries
)
6226 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6229 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6230 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6231 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6232 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6233 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6234 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6235 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6236 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6240 /* Wrapper since we can't directly assign the function pointer
6241 to another function pointer that was declared more completely easily. */
6243 jpeg_resync_to_restart_wrapper (cinfo
, desired
)
6244 j_decompress_ptr cinfo
;
6247 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6252 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6253 #define fn_jpeg_start_decompress jpeg_start_decompress
6254 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6255 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6256 #define fn_jpeg_read_header jpeg_read_header
6257 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6258 #define fn_jpeg_std_error jpeg_std_error
6259 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6261 #endif /* HAVE_NTGUI */
6263 struct my_jpeg_error_mgr
6265 struct jpeg_error_mgr pub
;
6266 jmp_buf setjmp_buffer
;
6271 my_error_exit (cinfo
)
6274 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6275 longjmp (mgr
->setjmp_buffer
, 1);
6279 /* Init source method for JPEG data source manager. Called by
6280 jpeg_read_header() before any data is actually read. See
6281 libjpeg.doc from the JPEG lib distribution. */
6284 our_common_init_source (cinfo
)
6285 j_decompress_ptr cinfo
;
6290 /* Method to terminate data source. Called by
6291 jpeg_finish_decompress() after all data has been processed. */
6294 our_common_term_source (cinfo
)
6295 j_decompress_ptr cinfo
;
6300 /* Fill input buffer method for JPEG data source manager. Called
6301 whenever more data is needed. We read the whole image in one step,
6302 so this only adds a fake end of input marker at the end. */
6304 static JOCTET our_memory_buffer
[2];
6307 our_memory_fill_input_buffer (cinfo
)
6308 j_decompress_ptr cinfo
;
6310 /* Insert a fake EOI marker. */
6311 struct jpeg_source_mgr
*src
= cinfo
->src
;
6313 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6314 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6316 src
->next_input_byte
= our_memory_buffer
;
6317 src
->bytes_in_buffer
= 2;
6322 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6323 is the JPEG data source manager. */
6326 our_memory_skip_input_data (cinfo
, num_bytes
)
6327 j_decompress_ptr cinfo
;
6330 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6334 if (num_bytes
> src
->bytes_in_buffer
)
6335 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6337 src
->bytes_in_buffer
-= num_bytes
;
6338 src
->next_input_byte
+= num_bytes
;
6343 /* Set up the JPEG lib for reading an image from DATA which contains
6344 LEN bytes. CINFO is the decompression info structure created for
6345 reading the image. */
6348 jpeg_memory_src (cinfo
, data
, len
)
6349 j_decompress_ptr cinfo
;
6353 struct jpeg_source_mgr
*src
;
6355 if (cinfo
->src
== NULL
)
6357 /* First time for this JPEG object? */
6358 cinfo
->src
= (struct jpeg_source_mgr
*)
6359 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6360 sizeof (struct jpeg_source_mgr
));
6361 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6362 src
->next_input_byte
= data
;
6365 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6366 src
->init_source
= our_common_init_source
;
6367 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6368 src
->skip_input_data
= our_memory_skip_input_data
;
6369 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6370 src
->term_source
= our_common_term_source
;
6371 src
->bytes_in_buffer
= len
;
6372 src
->next_input_byte
= data
;
6376 struct jpeg_stdio_mgr
6378 struct jpeg_source_mgr mgr
;
6385 /* Size of buffer to read JPEG from file.
6386 Not too big, as we want to use alloc_small. */
6387 #define JPEG_STDIO_BUFFER_SIZE 8192
6390 /* Fill input buffer method for JPEG data source manager. Called
6391 whenever more data is needed. The data is read from a FILE *. */
6394 our_stdio_fill_input_buffer (cinfo
)
6395 j_decompress_ptr cinfo
;
6397 struct jpeg_stdio_mgr
*src
;
6399 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6404 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6406 src
->mgr
.bytes_in_buffer
= bytes
;
6409 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6411 src
->buffer
[0] = (JOCTET
) 0xFF;
6412 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6413 src
->mgr
.bytes_in_buffer
= 2;
6415 src
->mgr
.next_input_byte
= src
->buffer
;
6422 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6423 is the JPEG data source manager. */
6426 our_stdio_skip_input_data (cinfo
, num_bytes
)
6427 j_decompress_ptr cinfo
;
6430 struct jpeg_stdio_mgr
*src
;
6431 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6433 while (num_bytes
> 0 && !src
->finished
)
6435 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6437 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6438 src
->mgr
.next_input_byte
+= num_bytes
;
6443 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6444 src
->mgr
.bytes_in_buffer
= 0;
6445 src
->mgr
.next_input_byte
= NULL
;
6447 our_stdio_fill_input_buffer (cinfo
);
6453 /* Set up the JPEG lib for reading an image from a FILE *.
6454 CINFO is the decompression info structure created for
6455 reading the image. */
6458 jpeg_file_src (cinfo
, fp
)
6459 j_decompress_ptr cinfo
;
6462 struct jpeg_stdio_mgr
*src
;
6464 if (cinfo
->src
!= NULL
)
6465 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6468 /* First time for this JPEG object? */
6469 cinfo
->src
= (struct jpeg_source_mgr
*)
6470 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6471 sizeof (struct jpeg_stdio_mgr
));
6472 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6473 src
->buffer
= (JOCTET
*)
6474 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6475 JPEG_STDIO_BUFFER_SIZE
);
6480 src
->mgr
.init_source
= our_common_init_source
;
6481 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6482 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6483 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6484 src
->mgr
.term_source
= our_common_term_source
;
6485 src
->mgr
.bytes_in_buffer
= 0;
6486 src
->mgr
.next_input_byte
= NULL
;
6490 /* Load image IMG for use on frame F. Patterned after example.c
6491 from the JPEG lib. */
6498 struct jpeg_decompress_struct cinfo
;
6499 struct my_jpeg_error_mgr mgr
;
6500 Lisp_Object file
, specified_file
;
6501 Lisp_Object specified_data
;
6502 FILE * volatile fp
= NULL
;
6504 int row_stride
, x
, y
;
6505 XImagePtr ximg
= NULL
;
6507 unsigned long *colors
;
6509 struct gcpro gcpro1
;
6511 /* Open the JPEG file. */
6512 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6513 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6517 if (NILP (specified_data
))
6519 file
= x_find_image_file (specified_file
);
6520 if (!STRINGP (file
))
6522 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6527 fp
= fopen (SDATA (file
), "rb");
6530 image_error ("Cannot open `%s'", file
, Qnil
);
6536 /* Customize libjpeg's error handling to call my_error_exit when an
6537 error is detected. This function will perform a longjmp.
6538 Casting return value avoids a GCC warning on W32. */
6539 cinfo
.err
= (struct jpeg_error_mgr
*)fn_jpeg_std_error (&mgr
.pub
);
6540 mgr
.pub
.error_exit
= my_error_exit
;
6542 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6546 /* Called from my_error_exit. Display a JPEG error. */
6547 char buffer
[JMSG_LENGTH_MAX
];
6548 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
6549 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6550 build_string (buffer
));
6553 /* Close the input file and destroy the JPEG object. */
6555 fclose ((FILE *) fp
);
6556 fn_jpeg_destroy_decompress (&cinfo
);
6558 /* If we already have an XImage, free that. */
6559 x_destroy_x_image (ximg
);
6561 /* Free pixmap and colors. */
6562 x_clear_image (f
, img
);
6568 /* Create the JPEG decompression object. Let it read from fp.
6569 Read the JPEG image header. */
6570 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6572 if (NILP (specified_data
))
6573 jpeg_file_src (&cinfo
, (FILE *) fp
);
6575 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6576 SBYTES (specified_data
));
6578 fn_jpeg_read_header (&cinfo
, 1);
6580 /* Customize decompression so that color quantization will be used.
6581 Start decompression. */
6582 cinfo
.quantize_colors
= 1;
6583 fn_jpeg_start_decompress (&cinfo
);
6584 width
= img
->width
= cinfo
.output_width
;
6585 height
= img
->height
= cinfo
.output_height
;
6587 if (!check_image_size (f
, width
, height
))
6589 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6590 longjmp (mgr
.setjmp_buffer
, 2);
6593 /* Create X image and pixmap. */
6594 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6595 longjmp (mgr
.setjmp_buffer
, 2);
6597 /* Allocate colors. When color quantization is used,
6598 cinfo.actual_number_of_colors has been set with the number of
6599 colors generated, and cinfo.colormap is a two-dimensional array
6600 of color indices in the range 0..cinfo.actual_number_of_colors.
6601 No more than 255 colors will be generated. */
6605 if (cinfo
.out_color_components
> 2)
6606 ir
= 0, ig
= 1, ib
= 2;
6607 else if (cinfo
.out_color_components
> 1)
6608 ir
= 0, ig
= 1, ib
= 0;
6610 ir
= 0, ig
= 0, ib
= 0;
6612 /* Use the color table mechanism because it handles colors that
6613 cannot be allocated nicely. Such colors will be replaced with
6614 a default color, and we don't have to care about which colors
6615 can be freed safely, and which can't. */
6616 init_color_table ();
6617 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6620 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6622 /* Multiply RGB values with 255 because X expects RGB values
6623 in the range 0..0xffff. */
6624 int r
= cinfo
.colormap
[ir
][i
] << 8;
6625 int g
= cinfo
.colormap
[ig
][i
] << 8;
6626 int b
= cinfo
.colormap
[ib
][i
] << 8;
6627 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6630 #ifdef COLOR_TABLE_SUPPORT
6631 /* Remember those colors actually allocated. */
6632 img
->colors
= colors_in_color_table (&img
->ncolors
);
6633 free_color_table ();
6634 #endif /* COLOR_TABLE_SUPPORT */
6638 row_stride
= width
* cinfo
.output_components
;
6639 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6641 for (y
= 0; y
< height
; ++y
)
6643 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6644 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6645 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6649 fn_jpeg_finish_decompress (&cinfo
);
6650 fn_jpeg_destroy_decompress (&cinfo
);
6652 fclose ((FILE *) fp
);
6654 /* Maybe fill in the background field while we have ximg handy. */
6655 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6656 /* Casting avoids a GCC warning. */
6657 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6659 /* Put the image into the pixmap. */
6660 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6661 x_destroy_x_image (ximg
);
6666 #else /* HAVE_JPEG */
6670 jpeg_load (struct frame
*f
, struct image
*img
)
6672 return ns_load_image(f
, img
,
6673 image_spec_value (img
->spec
, QCfile
, NULL
),
6674 image_spec_value (img
->spec
, QCdata
, NULL
));
6676 #endif /* HAVE_NS */
6678 #endif /* !HAVE_JPEG */
6682 /***********************************************************************
6684 ***********************************************************************/
6686 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6688 static int tiff_image_p
P_ ((Lisp_Object object
));
6689 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
6691 /* The symbol `tiff' identifying images of this type. */
6695 /* Indices of image specification fields in tiff_format, below. */
6697 enum tiff_keyword_index
6706 TIFF_HEURISTIC_MASK
,
6713 /* Vector of image_keyword structures describing the format
6714 of valid user-defined image specifications. */
6716 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6718 {":type", IMAGE_SYMBOL_VALUE
, 1},
6719 {":data", IMAGE_STRING_VALUE
, 0},
6720 {":file", IMAGE_STRING_VALUE
, 0},
6721 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6722 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6723 {":relief", IMAGE_INTEGER_VALUE
, 0},
6724 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6725 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6726 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6727 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6728 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6731 /* Structure describing the image type `tiff'. */
6733 static struct image_type tiff_type
=
6742 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6745 tiff_image_p (object
)
6748 struct image_keyword fmt
[TIFF_LAST
];
6749 bcopy (tiff_format
, fmt
, sizeof fmt
);
6751 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6754 /* Must specify either the :data or :file keyword. */
6755 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6758 #endif /* HAVE_TIFF || HAVE_NS */
6766 /* TIFF library details. */
6767 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
6768 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
6769 DEF_IMGLIB_FN (TIFFOpen
);
6770 DEF_IMGLIB_FN (TIFFClientOpen
);
6771 DEF_IMGLIB_FN (TIFFGetField
);
6772 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
6773 DEF_IMGLIB_FN (TIFFClose
);
6774 DEF_IMGLIB_FN (TIFFSetDirectory
);
6777 init_tiff_functions (Lisp_Object libraries
)
6781 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6784 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6785 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6786 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6787 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6788 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6789 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6790 LOAD_IMGLIB_FN (library
, TIFFClose
);
6791 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6797 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6798 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6799 #define fn_TIFFOpen TIFFOpen
6800 #define fn_TIFFClientOpen TIFFClientOpen
6801 #define fn_TIFFGetField TIFFGetField
6802 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6803 #define fn_TIFFClose TIFFClose
6804 #define fn_TIFFSetDirectory TIFFSetDirectory
6805 #endif /* HAVE_NTGUI */
6808 /* Reading from a memory buffer for TIFF images Based on the PNG
6809 memory source, but we have to provide a lot of extra functions.
6812 We really only need to implement read and seek, but I am not
6813 convinced that the TIFF library is smart enough not to destroy
6814 itself if we only hand it the function pointers we need to
6819 unsigned char *bytes
;
6826 tiff_read_from_memory (data
, buf
, size
)
6831 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6833 if (size
> src
->len
- src
->index
)
6835 bcopy (src
->bytes
+ src
->index
, buf
, size
);
6841 tiff_write_from_memory (data
, buf
, size
)
6850 tiff_seek_in_memory (data
, off
, whence
)
6855 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6860 case SEEK_SET
: /* Go from beginning of source. */
6864 case SEEK_END
: /* Go from end of source. */
6865 idx
= src
->len
+ off
;
6868 case SEEK_CUR
: /* Go from current position. */
6869 idx
= src
->index
+ off
;
6872 default: /* Invalid `whence'. */
6876 if (idx
> src
->len
|| idx
< 0)
6884 tiff_close_memory (data
)
6892 tiff_mmap_memory (data
, pbase
, psize
)
6897 /* It is already _IN_ memory. */
6902 tiff_unmap_memory (data
, base
, size
)
6907 /* We don't need to do this. */
6911 tiff_size_of_memory (data
)
6914 return ((tiff_memory_source
*) data
)->len
;
6919 tiff_error_handler (title
, format
, ap
)
6920 const char *title
, *format
;
6926 len
= sprintf (buf
, "TIFF error: %s ", title
);
6927 vsprintf (buf
+ len
, format
, ap
);
6928 add_to_log (buf
, Qnil
, Qnil
);
6933 tiff_warning_handler (title
, format
, ap
)
6934 const char *title
, *format
;
6940 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6941 vsprintf (buf
+ len
, format
, ap
);
6942 add_to_log (buf
, Qnil
, Qnil
);
6946 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6954 Lisp_Object file
, specified_file
;
6955 Lisp_Object specified_data
;
6957 int width
, height
, x
, y
, count
;
6961 struct gcpro gcpro1
;
6962 tiff_memory_source memsrc
;
6965 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6966 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6970 fn_TIFFSetErrorHandler (tiff_error_handler
);
6971 fn_TIFFSetWarningHandler (tiff_warning_handler
);
6973 if (NILP (specified_data
))
6975 /* Read from a file */
6976 file
= x_find_image_file (specified_file
);
6977 if (!STRINGP (file
))
6979 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6984 /* Try to open the image file. Casting return value avoids a
6985 GCC warning on W32. */
6986 tiff
= (TIFF
*)fn_TIFFOpen (SDATA (file
), "r");
6989 image_error ("Cannot open `%s'", file
, Qnil
);
6996 /* Memory source! */
6997 memsrc
.bytes
= SDATA (specified_data
);
6998 memsrc
.len
= SBYTES (specified_data
);
7001 /* Casting return value avoids a GCC warning on W32. */
7002 tiff
= (TIFF
*)fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
7003 (TIFFReadWriteProc
) tiff_read_from_memory
,
7004 (TIFFReadWriteProc
) tiff_write_from_memory
,
7005 tiff_seek_in_memory
,
7007 tiff_size_of_memory
,
7013 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
7019 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7020 if (INTEGERP (image
))
7022 int ino
= XFASTINT (image
);
7023 if (!fn_TIFFSetDirectory (tiff
, ino
))
7025 image_error ("Invalid image number `%s' in image `%s'",
7027 fn_TIFFClose (tiff
);
7033 /* Get width and height of the image, and allocate a raster buffer
7034 of width x height 32-bit values. */
7035 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
7036 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
7038 if (!check_image_size (f
, width
, height
))
7040 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7041 fn_TIFFClose (tiff
);
7046 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
7048 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
7050 /* Count the number of images in the file. */
7051 for (count
= 1, rc2
= 1; rc2
; count
++)
7052 rc2
= fn_TIFFSetDirectory (tiff
, count
);
7055 img
->data
.lisp_val
= Fcons (Qcount
,
7056 Fcons (make_number (count
),
7057 img
->data
.lisp_val
));
7059 fn_TIFFClose (tiff
);
7062 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
7068 /* Create the X image and pixmap. */
7069 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7076 /* Initialize the color table. */
7077 init_color_table ();
7079 /* Process the pixel raster. Origin is in the lower-left corner. */
7080 for (y
= 0; y
< height
; ++y
)
7082 uint32
*row
= buf
+ y
* width
;
7084 for (x
= 0; x
< width
; ++x
)
7086 uint32 abgr
= row
[x
];
7087 int r
= TIFFGetR (abgr
) << 8;
7088 int g
= TIFFGetG (abgr
) << 8;
7089 int b
= TIFFGetB (abgr
) << 8;
7090 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
7094 #ifdef COLOR_TABLE_SUPPORT
7095 /* Remember the colors allocated for the image. Free the color table. */
7096 img
->colors
= colors_in_color_table (&img
->ncolors
);
7097 free_color_table ();
7098 #endif /* COLOR_TABLE_SUPPORT */
7101 img
->height
= height
;
7103 /* Maybe fill in the background field while we have ximg handy. */
7104 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7105 /* Casting avoids a GCC warning on W32. */
7106 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7108 /* Put the image into the pixmap, then free the X image and its buffer. */
7109 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7110 x_destroy_x_image (ximg
);
7117 #else /* HAVE_TIFF */
7121 tiff_load (struct frame
*f
, struct image
*img
)
7123 return ns_load_image(f
, img
,
7124 image_spec_value (img
->spec
, QCfile
, NULL
),
7125 image_spec_value (img
->spec
, QCdata
, NULL
));
7127 #endif /* HAVE_NS */
7129 #endif /* !HAVE_TIFF */
7133 /***********************************************************************
7135 ***********************************************************************/
7137 #if defined (HAVE_GIF) || defined (HAVE_NS)
7139 static int gif_image_p
P_ ((Lisp_Object object
));
7140 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
7141 static void gif_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7143 /* The symbol `gif' identifying images of this type. */
7147 /* Indices of image specification fields in gif_format, below. */
7149 enum gif_keyword_index
7165 /* Vector of image_keyword structures describing the format
7166 of valid user-defined image specifications. */
7168 static const struct image_keyword gif_format
[GIF_LAST
] =
7170 {":type", IMAGE_SYMBOL_VALUE
, 1},
7171 {":data", IMAGE_STRING_VALUE
, 0},
7172 {":file", IMAGE_STRING_VALUE
, 0},
7173 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7174 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7175 {":relief", IMAGE_INTEGER_VALUE
, 0},
7176 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7177 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7178 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7179 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
7180 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7183 /* Structure describing the image type `gif'. */
7185 static struct image_type gif_type
=
7194 /* Free X resources of GIF image IMG which is used on frame F. */
7197 gif_clear_image (f
, img
)
7201 /* IMG->data.ptr_val may contain metadata with extension data. */
7202 img
->data
.lisp_val
= Qnil
;
7203 x_clear_image (f
, img
);
7206 /* Return non-zero if OBJECT is a valid GIF image specification. */
7209 gif_image_p (object
)
7212 struct image_keyword fmt
[GIF_LAST
];
7213 bcopy (gif_format
, fmt
, sizeof fmt
);
7215 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7218 /* Must specify either the :data or :file keyword. */
7219 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7222 #endif /* HAVE_GIF */
7226 #if defined (HAVE_NTGUI)
7227 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7228 Undefine before redefining to avoid a preprocessor warning. */
7232 /* avoid conflict with QuickdrawText.h */
7233 #define DrawText gif_DrawText
7234 #include <gif_lib.h>
7237 #else /* HAVE_NTGUI */
7239 #include <gif_lib.h>
7241 #endif /* HAVE_NTGUI */
7246 /* GIF library details. */
7247 DEF_IMGLIB_FN (DGifCloseFile
);
7248 DEF_IMGLIB_FN (DGifSlurp
);
7249 DEF_IMGLIB_FN (DGifOpen
);
7250 DEF_IMGLIB_FN (DGifOpenFileName
);
7253 init_gif_functions (Lisp_Object libraries
)
7257 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7260 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7261 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7262 LOAD_IMGLIB_FN (library
, DGifOpen
);
7263 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7269 #define fn_DGifCloseFile DGifCloseFile
7270 #define fn_DGifSlurp DGifSlurp
7271 #define fn_DGifOpen DGifOpen
7272 #define fn_DGifOpenFileName DGifOpenFileName
7274 #endif /* HAVE_NTGUI */
7276 /* Reading a GIF image from memory
7277 Based on the PNG memory stuff to a certain extent. */
7281 unsigned char *bytes
;
7287 /* Make the current memory source available to gif_read_from_memory.
7288 It's done this way because not all versions of libungif support
7289 a UserData field in the GifFileType structure. */
7290 static gif_memory_source
*current_gif_memory_src
;
7293 gif_read_from_memory (file
, buf
, len
)
7298 gif_memory_source
*src
= current_gif_memory_src
;
7300 if (len
> src
->len
- src
->index
)
7303 bcopy (src
->bytes
+ src
->index
, buf
, len
);
7309 /* Load GIF image IMG for use on frame F. Value is non-zero if
7312 static const int interlace_start
[] = {0, 4, 2, 1};
7313 static const int interlace_increment
[] = {8, 8, 4, 2};
7320 Lisp_Object file
, specified_file
;
7321 Lisp_Object specified_data
;
7322 int rc
, width
, height
, x
, y
, i
;
7324 ColorMapObject
*gif_color_map
;
7325 unsigned long pixel_colors
[256];
7327 struct gcpro gcpro1
;
7329 int ino
, image_height
, image_width
;
7330 gif_memory_source memsrc
;
7331 unsigned char *raster
;
7333 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7334 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7338 if (NILP (specified_data
))
7340 file
= x_find_image_file (specified_file
);
7341 if (!STRINGP (file
))
7343 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7348 /* Open the GIF file. Casting return value avoids a GCC warning
7350 gif
= (GifFileType
*)fn_DGifOpenFileName (SDATA (file
));
7353 image_error ("Cannot open `%s'", file
, Qnil
);
7360 /* Read from memory! */
7361 current_gif_memory_src
= &memsrc
;
7362 memsrc
.bytes
= SDATA (specified_data
);
7363 memsrc
.len
= SBYTES (specified_data
);
7366 /* Casting return value avoids a GCC warning on W32. */
7367 gif
= (GifFileType
*) fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7370 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7376 /* Before reading entire contents, check the declared image size. */
7377 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7379 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7380 fn_DGifCloseFile (gif
);
7385 /* Read entire contents. */
7386 rc
= fn_DGifSlurp (gif
);
7387 if (rc
== GIF_ERROR
)
7389 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7390 fn_DGifCloseFile (gif
);
7395 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7396 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7397 if (ino
>= gif
->ImageCount
)
7399 image_error ("Invalid image number `%s' in image `%s'",
7401 fn_DGifCloseFile (gif
);
7406 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7407 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7408 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7409 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7410 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7411 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7413 width
= img
->width
= max (gif
->SWidth
,
7414 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7415 img
->corners
[RIGHT_CORNER
]));
7416 height
= img
->height
= max (gif
->SHeight
,
7417 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7418 img
->corners
[BOT_CORNER
]));
7420 if (!check_image_size (f
, width
, height
))
7422 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7423 fn_DGifCloseFile (gif
);
7428 /* Create the X image and pixmap. */
7429 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7431 fn_DGifCloseFile (gif
);
7436 /* Allocate colors. */
7437 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7439 gif_color_map
= gif
->SColorMap
;
7440 init_color_table ();
7441 bzero (pixel_colors
, sizeof pixel_colors
);
7444 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7446 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7447 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7448 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7449 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7452 #ifdef COLOR_TABLE_SUPPORT
7453 img
->colors
= colors_in_color_table (&img
->ncolors
);
7454 free_color_table ();
7455 #endif /* COLOR_TABLE_SUPPORT */
7457 /* Clear the part of the screen image that are not covered by
7458 the image from the GIF file. Full animated GIF support
7459 requires more than can be done here (see the gif89 spec,
7460 disposal methods). Let's simply assume that the part
7461 not covered by a sub-image is in the frame's background color. */
7462 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7463 for (x
= 0; x
< width
; ++x
)
7464 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7466 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7467 for (x
= 0; x
< width
; ++x
)
7468 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7470 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7472 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7473 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7474 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7475 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7478 /* Read the GIF image into the X image. We use a local variable
7479 `raster' here because RasterBits below is a char *, and invites
7480 problems with bytes >= 0x80. */
7481 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7483 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7486 int row
= interlace_start
[0];
7490 for (y
= 0; y
< image_height
; y
++)
7492 if (row
>= image_height
)
7494 row
= interlace_start
[++pass
];
7495 while (row
>= image_height
)
7496 row
= interlace_start
[++pass
];
7499 for (x
= 0; x
< image_width
; x
++)
7501 int i
= raster
[(y
* image_width
) + x
];
7502 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7503 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7506 row
+= interlace_increment
[pass
];
7511 for (y
= 0; y
< image_height
; ++y
)
7512 for (x
= 0; x
< image_width
; ++x
)
7514 int i
= raster
[y
* image_width
+ x
];
7515 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7516 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7520 /* Save GIF image extension data for `image-metadata'.
7521 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7522 img
->data
.lisp_val
= Qnil
;
7523 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7525 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7526 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7527 /* Append (... FUNCTION "BYTES") */
7528 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7529 Fcons (make_number (ext
->Function
),
7530 img
->data
.lisp_val
));
7531 img
->data
.lisp_val
= Fcons (Qextension_data
,
7532 Fcons (Fnreverse (img
->data
.lisp_val
),
7535 if (gif
->ImageCount
> 1)
7536 img
->data
.lisp_val
= Fcons (Qcount
,
7537 Fcons (make_number (gif
->ImageCount
),
7538 img
->data
.lisp_val
));
7540 fn_DGifCloseFile (gif
);
7542 /* Maybe fill in the background field while we have ximg handy. */
7543 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7544 /* Casting avoids a GCC warning. */
7545 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7547 /* Put the image into the pixmap, then free the X image and its buffer. */
7548 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7549 x_destroy_x_image (ximg
);
7555 #else /* !HAVE_GIF */
7559 gif_load (struct frame
*f
, struct image
*img
)
7561 return ns_load_image(f
, img
,
7562 image_spec_value (img
->spec
, QCfile
, NULL
),
7563 image_spec_value (img
->spec
, QCdata
, NULL
));
7565 #endif /* HAVE_NS */
7567 #endif /* HAVE_GIF */
7571 /***********************************************************************
7573 ***********************************************************************/
7575 #if defined (HAVE_RSVG)
7577 /* Function prototypes. */
7579 static int svg_image_p
P_ ((Lisp_Object object
));
7580 static int svg_load
P_ ((struct frame
*f
, struct image
*img
));
7582 static int svg_load_image
P_ ((struct frame
*, struct image
*,
7583 unsigned char *, unsigned int));
7585 /* The symbol `svg' identifying images of this type. */
7589 /* Indices of image specification fields in svg_format, below. */
7591 enum svg_keyword_index
7606 /* Vector of image_keyword structures describing the format
7607 of valid user-defined image specifications. */
7609 static const struct image_keyword svg_format
[SVG_LAST
] =
7611 {":type", IMAGE_SYMBOL_VALUE
, 1},
7612 {":data", IMAGE_STRING_VALUE
, 0},
7613 {":file", IMAGE_STRING_VALUE
, 0},
7614 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7615 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7616 {":relief", IMAGE_INTEGER_VALUE
, 0},
7617 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7618 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7619 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7620 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7623 /* Structure describing the image type `svg'. Its the same type of
7624 structure defined for all image formats, handled by emacs image
7625 functions. See struct image_type in dispextern.h. */
7627 static struct image_type svg_type
=
7629 /* An identifier showing that this is an image structure for the SVG format. */
7631 /* Handle to a function that can be used to identify a SVG file. */
7633 /* Handle to function used to load a SVG file. */
7635 /* Handle to function to free sresources for SVG. */
7637 /* An internal field to link to the next image type in a list of
7638 image types, will be filled in when registering the format. */
7643 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7644 this by calling parse_image_spec and supplying the keywords that
7645 identify the SVG format. */
7648 svg_image_p (object
)
7651 struct image_keyword fmt
[SVG_LAST
];
7652 bcopy (svg_format
, fmt
, sizeof fmt
);
7654 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7657 /* Must specify either the :data or :file keyword. */
7658 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7661 #include <librsvg/rsvg.h>
7665 /* SVG library functions. */
7666 DEF_IMGLIB_FN (rsvg_handle_new
);
7667 DEF_IMGLIB_FN (rsvg_handle_get_dimensions
);
7668 DEF_IMGLIB_FN (rsvg_handle_write
);
7669 DEF_IMGLIB_FN (rsvg_handle_close
);
7670 DEF_IMGLIB_FN (rsvg_handle_get_pixbuf
);
7671 DEF_IMGLIB_FN (rsvg_handle_free
);
7673 DEF_IMGLIB_FN (gdk_pixbuf_get_width
);
7674 DEF_IMGLIB_FN (gdk_pixbuf_get_height
);
7675 DEF_IMGLIB_FN (gdk_pixbuf_get_pixels
);
7676 DEF_IMGLIB_FN (gdk_pixbuf_get_rowstride
);
7677 DEF_IMGLIB_FN (gdk_pixbuf_get_colorspace
);
7678 DEF_IMGLIB_FN (gdk_pixbuf_get_n_channels
);
7679 DEF_IMGLIB_FN (gdk_pixbuf_get_has_alpha
);
7680 DEF_IMGLIB_FN (gdk_pixbuf_get_bits_per_sample
);
7682 DEF_IMGLIB_FN (g_type_init
);
7683 DEF_IMGLIB_FN (g_object_unref
);
7684 DEF_IMGLIB_FN (g_error_free
);
7686 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
7689 init_svg_functions (Lisp_Object libraries
)
7691 HMODULE library
, gdklib
, glib
, gobject
;
7693 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
7694 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
7695 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
7696 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
7699 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
7700 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
7701 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
7702 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
7703 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
7704 LOAD_IMGLIB_FN (library
, rsvg_handle_free
);
7706 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
7707 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
7708 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
7709 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
7710 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
7711 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
7712 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
7713 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
7715 LOAD_IMGLIB_FN (gobject
, g_type_init
);
7716 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
7717 LOAD_IMGLIB_FN (glib
, g_error_free
);
7723 /* The following aliases for library functions allow dynamic loading
7724 to be used on some platforms. */
7725 #define fn_rsvg_handle_new rsvg_handle_new
7726 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
7727 #define fn_rsvg_handle_write rsvg_handle_write
7728 #define fn_rsvg_handle_close rsvg_handle_close
7729 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
7730 #define fn_rsvg_handle_free rsvg_handle_free
7732 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
7733 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
7734 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
7735 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
7736 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
7737 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
7738 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
7739 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
7741 #define fn_g_type_init g_type_init
7742 #define fn_g_object_unref g_object_unref
7743 #define fn_g_error_free g_error_free
7744 #endif /* !HAVE_NTGUI */
7746 /* Load SVG image IMG for use on frame F. Value is non-zero if
7747 successful. this function will go into the svg_type structure, and
7748 the prototype thus needs to be compatible with that structure. */
7756 Lisp_Object file_name
;
7758 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7759 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7760 if (STRINGP (file_name
))
7763 unsigned char *contents
;
7765 struct gcpro gcpro1
;
7767 file
= x_find_image_file (file_name
);
7769 if (!STRINGP (file
))
7771 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7776 /* Read the entire file into memory. */
7777 contents
= slurp_file (SDATA (file
), &size
);
7778 if (contents
== NULL
)
7780 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
7784 /* If the file was slurped into memory properly, parse it. */
7785 success_p
= svg_load_image (f
, img
, contents
, size
);
7789 /* Else its not a file, its a lisp object. Load the image from a
7790 lisp object rather than a file. */
7795 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7796 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
7802 /* svg_load_image is a helper function for svg_load, which does the
7803 actual loading given contents and size, apart from frame and image
7804 structures, passed from svg_load.
7806 Uses librsvg to do most of the image processing.
7808 Returns non-zero when successful. */
7810 svg_load_image (f
, img
, contents
, size
)
7811 /* Pointer to emacs frame structure. */
7813 /* Pointer to emacs image structure. */
7815 /* String containing the SVG XML data to be parsed. */
7816 unsigned char *contents
;
7817 /* Size of data in bytes. */
7820 RsvgHandle
*rsvg_handle
;
7821 RsvgDimensionData dimension_data
;
7822 GError
*error
= NULL
;
7826 const guint8
*pixels
;
7829 Lisp_Object specified_bg
;
7834 /* g_type_init is a glib function that must be called prior to using
7835 gnome type library functions. */
7837 /* Make a handle to a new rsvg object. */
7838 rsvg_handle
= (RsvgHandle
*) fn_rsvg_handle_new ();
7840 /* Parse the contents argument and fill in the rsvg_handle. */
7841 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &error
);
7842 if (error
) goto rsvg_error
;
7844 /* The parsing is complete, rsvg_handle is ready to used, close it
7845 for further writes. */
7846 fn_rsvg_handle_close (rsvg_handle
, &error
);
7847 if (error
) goto rsvg_error
;
7849 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
7850 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
7852 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7856 /* We can now get a valid pixel buffer from the svg file, if all
7858 pixbuf
= (GdkPixbuf
*) fn_rsvg_handle_get_pixbuf (rsvg_handle
);
7859 if (!pixbuf
) goto rsvg_error
;
7860 fn_g_object_unref (rsvg_handle
);
7862 /* Extract some meta data from the svg handle. */
7863 width
= fn_gdk_pixbuf_get_width (pixbuf
);
7864 height
= fn_gdk_pixbuf_get_height (pixbuf
);
7865 pixels
= (const guint8
*) fn_gdk_pixbuf_get_pixels (pixbuf
);
7866 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
7868 /* Validate the svg meta data. */
7869 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
7870 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
7871 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
7872 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
7874 /* Try to create a x pixmap to hold the svg pixmap. */
7875 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7877 fn_g_object_unref (pixbuf
);
7881 init_color_table ();
7883 /* Handle alpha channel by combining the image with a background
7885 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
7886 if (!STRINGP (specified_bg
)
7887 || !x_defined_color (f
, SDATA (specified_bg
), &background
, 0))
7890 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
7891 x_query_color (f
, &background
);
7893 ns_query_color(FRAME_BACKGROUND_COLOR (f
), &background
, 1);
7897 /* SVG pixmaps specify transparency in the last byte, so right
7898 shift 8 bits to get rid of it, since emacs doesn't support
7900 background
.red
>>= 8;
7901 background
.green
>>= 8;
7902 background
.blue
>>= 8;
7904 /* This loop handles opacity values, since Emacs assumes
7905 non-transparent images. Each pixel must be "flattened" by
7906 calculating the resulting color, given the transparency of the
7907 pixel, and the image background color. */
7908 for (y
= 0; y
< height
; ++y
)
7910 for (x
= 0; x
< width
; ++x
)
7920 opacity
= *pixels
++;
7922 red
= ((red
* opacity
)
7923 + (background
.red
* ((1 << 8) - opacity
)));
7924 green
= ((green
* opacity
)
7925 + (background
.green
* ((1 << 8) - opacity
)));
7926 blue
= ((blue
* opacity
)
7927 + (background
.blue
* ((1 << 8) - opacity
)));
7929 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
7932 pixels
+= rowstride
- 4 * width
;
7935 #ifdef COLOR_TABLE_SUPPORT
7936 /* Remember colors allocated for this image. */
7937 img
->colors
= colors_in_color_table (&img
->ncolors
);
7938 free_color_table ();
7939 #endif /* COLOR_TABLE_SUPPORT */
7941 fn_g_object_unref (pixbuf
);
7944 img
->height
= height
;
7946 /* Maybe fill in the background field while we have ximg handy.
7947 Casting avoids a GCC warning. */
7948 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7950 /* Put the image into the pixmap, then free the X image and its
7952 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7953 x_destroy_x_image (ximg
);
7958 fn_g_object_unref (rsvg_handle
);
7959 /* FIXME: Use error->message so the user knows what is the actual
7960 problem with the image. */
7961 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
7962 fn_g_error_free (error
);
7966 #endif /* defined (HAVE_RSVG) */
7971 /***********************************************************************
7973 ***********************************************************************/
7975 #ifdef HAVE_X_WINDOWS
7976 #define HAVE_GHOSTSCRIPT 1
7977 #endif /* HAVE_X_WINDOWS */
7979 /* The symbol `postscript' identifying images of this type. */
7981 Lisp_Object Qpostscript
;
7983 #ifdef HAVE_GHOSTSCRIPT
7985 static int gs_image_p
P_ ((Lisp_Object object
));
7986 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
7987 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7989 /* Keyword symbols. */
7991 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
7993 /* Indices of image specification fields in gs_format, below. */
7995 enum gs_keyword_index
8013 /* Vector of image_keyword structures describing the format
8014 of valid user-defined image specifications. */
8016 static const struct image_keyword gs_format
[GS_LAST
] =
8018 {":type", IMAGE_SYMBOL_VALUE
, 1},
8019 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8020 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8021 {":file", IMAGE_STRING_VALUE
, 1},
8022 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8023 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8024 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8025 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8026 {":relief", IMAGE_INTEGER_VALUE
, 0},
8027 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8028 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8029 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8030 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8033 /* Structure describing the image type `ghostscript'. */
8035 static struct image_type gs_type
=
8045 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8048 gs_clear_image (f
, img
)
8052 /* IMG->data.ptr_val may contain a recorded colormap. */
8053 xfree (img
->data
.ptr_val
);
8054 x_clear_image (f
, img
);
8058 /* Return non-zero if OBJECT is a valid Ghostscript image
8065 struct image_keyword fmt
[GS_LAST
];
8069 bcopy (gs_format
, fmt
, sizeof fmt
);
8071 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8074 /* Bounding box must be a list or vector containing 4 integers. */
8075 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8078 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8079 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8084 else if (VECTORP (tem
))
8086 if (XVECTOR (tem
)->size
!= 4)
8088 for (i
= 0; i
< 4; ++i
)
8089 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8099 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8108 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8109 struct gcpro gcpro1
, gcpro2
;
8111 double in_width
, in_height
;
8112 Lisp_Object pixel_colors
= Qnil
;
8114 /* Compute pixel size of pixmap needed from the given size in the
8115 image specification. Sizes in the specification are in pt. 1 pt
8116 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8118 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8119 in_width
= XFASTINT (pt_width
) / 72.0;
8120 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8121 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8122 in_height
= XFASTINT (pt_height
) / 72.0;
8123 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8125 if (!check_image_size (f
, img
->width
, img
->height
))
8127 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8131 /* Create the pixmap. */
8132 xassert (img
->pixmap
== NO_PIXMAP
);
8134 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8136 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8137 img
->width
, img
->height
,
8138 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8143 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8147 /* Call the loader to fill the pixmap. It returns a process object
8148 if successful. We do not record_unwind_protect here because
8149 other places in redisplay like calling window scroll functions
8150 don't either. Let the Lisp loader use `unwind-protect' instead. */
8151 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
8153 sprintf (buffer
, "%lu %lu",
8154 (unsigned long) FRAME_X_WINDOW (f
),
8155 (unsigned long) img
->pixmap
);
8156 window_and_pixmap_id
= build_string (buffer
);
8158 sprintf (buffer
, "%lu %lu",
8159 FRAME_FOREGROUND_PIXEL (f
),
8160 FRAME_BACKGROUND_PIXEL (f
));
8161 pixel_colors
= build_string (buffer
);
8163 XSETFRAME (frame
, f
);
8164 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8166 loader
= intern ("gs-load-image");
8168 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8169 make_number (img
->width
),
8170 make_number (img
->height
),
8171 window_and_pixmap_id
,
8174 return PROCESSP (img
->data
.lisp_val
);
8178 /* Kill the Ghostscript process that was started to fill PIXMAP on
8179 frame F. Called from XTread_socket when receiving an event
8180 telling Emacs that Ghostscript has finished drawing. */
8183 x_kill_gs_process (pixmap
, f
)
8187 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
8191 /* Find the image containing PIXMAP. */
8192 for (i
= 0; i
< c
->used
; ++i
)
8193 if (c
->images
[i
]->pixmap
== pixmap
)
8196 /* Should someone in between have cleared the image cache, for
8197 instance, give up. */
8201 /* Kill the GS process. We should have found PIXMAP in the image
8202 cache and its image should contain a process object. */
8204 xassert (PROCESSP (img
->data
.lisp_val
));
8205 Fkill_process (img
->data
.lisp_val
, Qnil
);
8206 img
->data
.lisp_val
= Qnil
;
8208 #if defined (HAVE_X_WINDOWS)
8210 /* On displays with a mutable colormap, figure out the colors
8211 allocated for the image by looking at the pixels of an XImage for
8213 class = FRAME_X_VISUAL (f
)->class;
8214 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8220 /* Try to get an XImage for img->pixmep. */
8221 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8222 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8227 /* Initialize the color table. */
8228 init_color_table ();
8230 /* For each pixel of the image, look its color up in the
8231 color table. After having done so, the color table will
8232 contain an entry for each color used by the image. */
8233 for (y
= 0; y
< img
->height
; ++y
)
8234 for (x
= 0; x
< img
->width
; ++x
)
8236 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8237 lookup_pixel_color (f
, pixel
);
8240 /* Record colors in the image. Free color table and XImage. */
8241 #ifdef COLOR_TABLE_SUPPORT
8242 img
->colors
= colors_in_color_table (&img
->ncolors
);
8243 free_color_table ();
8245 XDestroyImage (ximg
);
8247 #if 0 /* This doesn't seem to be the case. If we free the colors
8248 here, we get a BadAccess later in x_clear_image when
8249 freeing the colors. */
8250 /* We have allocated colors once, but Ghostscript has also
8251 allocated colors on behalf of us. So, to get the
8252 reference counts right, free them once. */
8254 x_free_colors (f
, img
->colors
, img
->ncolors
);
8258 image_error ("Cannot get X image of `%s'; colors will not be freed",
8263 #endif /* HAVE_X_WINDOWS */
8265 /* Now that we have the pixmap, compute mask and transform the
8266 image if requested. */
8268 postprocess_image (f
, img
);
8272 #endif /* HAVE_GHOSTSCRIPT */
8275 /***********************************************************************
8277 ***********************************************************************/
8281 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8282 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8286 return valid_image_p (spec
) ? Qt
: Qnil
;
8290 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8296 if (valid_image_p (spec
))
8297 id
= lookup_image (SELECTED_FRAME (), spec
);
8300 return make_number (id
);
8303 #endif /* GLYPH_DEBUG != 0 */
8306 /***********************************************************************
8308 ***********************************************************************/
8311 /* Image types that rely on external libraries are loaded dynamically
8312 if the library is available. */
8313 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8314 define_image_type (image_type, init_lib_fn (libraries))
8316 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8317 define_image_type (image_type, 1)
8318 #endif /* HAVE_NTGUI */
8320 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8321 doc
: /* Initialize image library implementing image type TYPE.
8322 Return non-nil if TYPE is a supported image type.
8324 Image types pbm and xbm are prebuilt; other types are loaded here.
8325 Libraries to load are specified in alist LIBRARIES (usually, the value
8326 of `image-library-alist', which see). */)
8328 Lisp_Object type
, libraries
;
8332 /* Don't try to reload the library. */
8333 tested
= Fassq (type
, Vimage_type_cache
);
8335 return XCDR (tested
);
8337 #if defined (HAVE_XPM) || defined (HAVE_NS)
8338 if (EQ (type
, Qxpm
))
8339 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8342 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8343 if (EQ (type
, Qjpeg
))
8344 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8347 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8348 if (EQ (type
, Qtiff
))
8349 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8352 #if defined (HAVE_GIF) || defined (HAVE_NS)
8353 if (EQ (type
, Qgif
))
8354 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8357 #if defined (HAVE_PNG) || defined (HAVE_NS)
8358 if (EQ (type
, Qpng
))
8359 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8362 #if defined (HAVE_RSVG)
8363 if (EQ (type
, Qsvg
))
8364 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8367 #ifdef HAVE_GHOSTSCRIPT
8368 if (EQ (type
, Qpostscript
))
8369 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8372 /* If the type is not recognized, avoid testing it ever again. */
8373 CACHE_IMAGE_TYPE (type
, Qnil
);
8380 extern Lisp_Object Qrisky_local_variable
; /* Syms_of_xdisp has already run. */
8382 /* Initialize this only once, since that's what we do with Vimage_types
8383 and they are supposed to be in sync. Initializing here gives correct
8384 operation on GNU/Linux of calling dump-emacs after loading some images. */
8387 /* Must be defined now becase we're going to update it below, while
8388 defining the supported image types. */
8389 DEFVAR_LISP ("image-types", &Vimage_types
,
8390 doc
: /* List of potentially supported image types.
8391 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8392 To check whether it is really supported, use `image-type-available-p'. */);
8393 Vimage_types
= Qnil
;
8395 DEFVAR_LISP ("image-library-alist", &Vimage_library_alist
,
8396 doc
: /* Alist of image types vs external libraries needed to display them.
8398 Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol
8399 representing a supported image type, and the rest are strings giving
8400 alternate filenames for the corresponding external libraries.
8402 Emacs tries to load the libraries in the order they appear on the
8403 list; if none is loaded, the running session of Emacs won't
8404 support the image type. Types 'pbm and 'xbm don't need to be
8405 listed; they are always supported. */);
8406 Vimage_library_alist
= Qnil
;
8407 Fput (intern_c_string ("image-library-alist"), Qrisky_local_variable
, Qt
);
8409 DEFVAR_LISP ("max-image-size", &Vmax_image_size
,
8410 doc
: /* Maximum size of images.
8411 Emacs will not load an image into memory if its pixel width or
8412 pixel height exceeds this limit.
8414 If the value is an integer, it directly specifies the maximum
8415 image height and width, measured in pixels. If it is a floating
8416 point number, it specifies the maximum image height and width
8417 as a ratio to the frame height and width. If the value is
8418 non-numeric, there is no explicit limit on the size of images. */);
8419 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8421 Vimage_type_cache
= Qnil
;
8422 staticpro (&Vimage_type_cache
);
8424 Qpbm
= intern_c_string ("pbm");
8426 ADD_IMAGE_TYPE (Qpbm
);
8428 Qxbm
= intern_c_string ("xbm");
8430 ADD_IMAGE_TYPE (Qxbm
);
8432 define_image_type (&xbm_type
, 1);
8433 define_image_type (&pbm_type
, 1);
8435 Qcount
= intern_c_string ("count");
8436 staticpro (&Qcount
);
8437 Qextension_data
= intern_c_string ("extension-data");
8438 staticpro (&Qextension_data
);
8440 QCascent
= intern_c_string (":ascent");
8441 staticpro (&QCascent
);
8442 QCmargin
= intern_c_string (":margin");
8443 staticpro (&QCmargin
);
8444 QCrelief
= intern_c_string (":relief");
8445 staticpro (&QCrelief
);
8446 QCconversion
= intern_c_string (":conversion");
8447 staticpro (&QCconversion
);
8448 QCcolor_symbols
= intern_c_string (":color-symbols");
8449 staticpro (&QCcolor_symbols
);
8450 QCheuristic_mask
= intern_c_string (":heuristic-mask");
8451 staticpro (&QCheuristic_mask
);
8452 QCindex
= intern_c_string (":index");
8453 staticpro (&QCindex
);
8454 QCmatrix
= intern_c_string (":matrix");
8455 staticpro (&QCmatrix
);
8456 QCcolor_adjustment
= intern_c_string (":color-adjustment");
8457 staticpro (&QCcolor_adjustment
);
8458 QCmask
= intern_c_string (":mask");
8459 staticpro (&QCmask
);
8461 Qlaplace
= intern_c_string ("laplace");
8462 staticpro (&Qlaplace
);
8463 Qemboss
= intern_c_string ("emboss");
8464 staticpro (&Qemboss
);
8465 Qedge_detection
= intern_c_string ("edge-detection");
8466 staticpro (&Qedge_detection
);
8467 Qheuristic
= intern_c_string ("heuristic");
8468 staticpro (&Qheuristic
);
8470 Qpostscript
= intern_c_string ("postscript");
8471 staticpro (&Qpostscript
);
8472 #ifdef HAVE_GHOSTSCRIPT
8473 ADD_IMAGE_TYPE (Qpostscript
);
8474 QCloader
= intern_c_string (":loader");
8475 staticpro (&QCloader
);
8476 QCbounding_box
= intern_c_string (":bounding-box");
8477 staticpro (&QCbounding_box
);
8478 QCpt_width
= intern_c_string (":pt-width");
8479 staticpro (&QCpt_width
);
8480 QCpt_height
= intern_c_string (":pt-height");
8481 staticpro (&QCpt_height
);
8482 #endif /* HAVE_GHOSTSCRIPT */
8484 #if defined (HAVE_XPM) || defined (HAVE_NS)
8485 Qxpm
= intern_c_string ("xpm");
8487 ADD_IMAGE_TYPE (Qxpm
);
8490 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8491 Qjpeg
= intern_c_string ("jpeg");
8493 ADD_IMAGE_TYPE (Qjpeg
);
8496 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8497 Qtiff
= intern_c_string ("tiff");
8499 ADD_IMAGE_TYPE (Qtiff
);
8502 #if defined (HAVE_GIF) || defined (HAVE_NS)
8503 Qgif
= intern_c_string ("gif");
8505 ADD_IMAGE_TYPE (Qgif
);
8508 #if defined (HAVE_PNG) || defined (HAVE_NS)
8509 Qpng
= intern_c_string ("png");
8511 ADD_IMAGE_TYPE (Qpng
);
8514 #if defined (HAVE_RSVG)
8515 Qsvg
= intern_c_string ("svg");
8517 ADD_IMAGE_TYPE (Qsvg
);
8519 /* Other libraries used directly by svg code. */
8520 Qgdk_pixbuf
= intern_c_string ("gdk-pixbuf");
8521 staticpro (&Qgdk_pixbuf
);
8522 Qglib
= intern_c_string ("glib");
8524 Qgobject
= intern_c_string ("gobject");
8525 staticpro (&Qgobject
);
8526 #endif /* HAVE_NTGUI */
8527 #endif /* HAVE_RSVG */
8529 defsubr (&Sinit_image_library
);
8530 defsubr (&Sclear_image_cache
);
8531 defsubr (&Simage_flush
);
8532 defsubr (&Simage_size
);
8533 defsubr (&Simage_mask_p
);
8534 defsubr (&Simage_metadata
);
8538 defsubr (&Slookup_image
);
8541 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8542 doc
: /* Non-nil means always draw a cross over disabled images.
8543 Disabled images are those having a `:conversion disabled' property.
8544 A cross is always drawn on black & white displays. */);
8545 cross_disabled_images
= 0;
8547 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8548 doc
: /* List of directories to search for window system bitmap files. */);
8549 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8551 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8552 doc
: /* Maximum time after which images are removed from the cache.
8553 When an image has not been displayed this many seconds, Emacs
8554 automatically removes it from the image cache. If the cache contains
8555 a large number of images, the actual eviction time may be shorter.
8556 The value can also be nil, meaning the cache is never cleared.
8558 The function `clear-image-cache' disregards this variable. */);
8559 Vimage_cache_eviction_delay
= make_number (300);
8567 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8568 (do not change this comment) */