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 (struct frame
*, struct image
*);
131 static void x_edge_detection (struct frame
*, struct image
*, Lisp_Object
,
134 static void init_color_table (void);
135 static unsigned long lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
);
136 #ifdef COLOR_TABLE_SUPPORT
137 static void free_color_table (void);
138 static unsigned long *colors_in_color_table (int *n
);
139 static unsigned long lookup_pixel_color (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 (FRAME_PTR f
, int id
)
186 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
190 x_bitmap_width (FRAME_PTR f
, int id
)
192 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
195 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
197 x_bitmap_pixmap (FRAME_PTR f
, int id
)
199 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
203 #ifdef HAVE_X_WINDOWS
205 x_bitmap_mask (FRAME_PTR f
, int id
)
207 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
211 /* Allocate a new bitmap record. Returns index of new record. */
214 x_allocate_bitmap_record (FRAME_PTR f
)
216 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
219 if (dpyinfo
->bitmaps
== NULL
)
221 dpyinfo
->bitmaps_size
= 10;
223 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
224 dpyinfo
->bitmaps_last
= 1;
228 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
229 return ++dpyinfo
->bitmaps_last
;
231 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
232 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
235 dpyinfo
->bitmaps_size
*= 2;
237 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
238 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
239 return ++dpyinfo
->bitmaps_last
;
242 /* Add one reference to the reference count of the bitmap with id ID. */
245 x_reference_bitmap (FRAME_PTR f
, int id
)
247 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
250 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
253 x_create_bitmap_from_data (struct frame
*f
, char *bits
, unsigned int width
, unsigned int height
)
255 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
258 #ifdef HAVE_X_WINDOWS
260 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
261 bits
, width
, height
);
264 #endif /* HAVE_X_WINDOWS */
268 bitmap
= CreateBitmap (width
, height
,
269 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
270 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
274 #endif /* HAVE_NTGUI */
277 void *bitmap
= ns_image_from_XBM (bits
, width
, height
);
282 id
= x_allocate_bitmap_record (f
);
285 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
286 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
289 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
290 dpyinfo
->bitmaps
[id
- 1].height
= height
;
291 dpyinfo
->bitmaps
[id
- 1].width
= width
;
292 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
294 #ifdef HAVE_X_WINDOWS
295 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
296 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
297 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
298 #endif /* HAVE_X_WINDOWS */
301 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
302 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
303 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
304 #endif /* HAVE_NTGUI */
309 /* Create bitmap from file FILE for frame F. */
312 x_create_bitmap_from_file (struct frame
*f
, Lisp_Object file
)
314 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
317 return -1; /* W32_TODO : bitmap support */
318 #endif /* HAVE_NTGUI */
322 void *bitmap
= ns_image_from_file (file
);
328 id
= x_allocate_bitmap_record (f
);
329 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
330 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
331 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
332 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
333 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width (bitmap
);
334 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height (bitmap
);
335 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
339 #ifdef HAVE_X_WINDOWS
340 unsigned int width
, height
;
342 int xhot
, yhot
, result
, id
;
347 /* Look for an existing bitmap with the same name. */
348 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
350 if (dpyinfo
->bitmaps
[id
].refcount
351 && dpyinfo
->bitmaps
[id
].file
352 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
354 ++dpyinfo
->bitmaps
[id
].refcount
;
359 /* Search bitmap-file-path for the file, if appropriate. */
360 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
365 filename
= (char *) SDATA (found
);
367 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
368 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
369 if (result
!= BitmapSuccess
)
372 id
= x_allocate_bitmap_record (f
);
373 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
374 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
375 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
376 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
377 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
378 dpyinfo
->bitmaps
[id
- 1].height
= height
;
379 dpyinfo
->bitmaps
[id
- 1].width
= width
;
380 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
383 #endif /* HAVE_X_WINDOWS */
389 free_bitmap_record (Display_Info
*dpyinfo
, Bitmap_Record
*bm
)
391 #ifdef HAVE_X_WINDOWS
392 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
394 XFreePixmap (dpyinfo
->display
, bm
->mask
);
395 #endif /* HAVE_X_WINDOWS */
398 DeleteObject (bm
->pixmap
);
399 #endif /* HAVE_NTGUI */
402 ns_release_object (bm
->img
);
412 /* Remove reference to bitmap with id number ID. */
415 x_destroy_bitmap (FRAME_PTR f
, int id
)
417 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
421 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
423 if (--bm
->refcount
== 0)
426 free_bitmap_record (dpyinfo
, bm
);
432 /* Free all the bitmaps for the display specified by DPYINFO. */
435 x_destroy_all_bitmaps (Display_Info
*dpyinfo
)
438 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
440 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
441 if (bm
->refcount
> 0)
442 free_bitmap_record (dpyinfo
, bm
);
444 dpyinfo
->bitmaps_last
= 0;
448 #ifdef HAVE_X_WINDOWS
450 /* Useful functions defined in the section
451 `Image type independent image structures' below. */
453 static unsigned long four_corners_best (XImagePtr ximg
,
456 unsigned long height
);
458 static int x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
,
459 int depth
, XImagePtr
*ximg
,
462 static void x_destroy_x_image (XImagePtr ximg
);
465 /* Create a mask of a bitmap. Note is this not a perfect mask.
466 It's nicer with some borders in this context */
469 x_create_bitmap_mask (struct frame
*f
, int id
)
472 XImagePtr ximg
, mask_img
;
473 unsigned long width
, height
;
476 unsigned long x
, y
, xp
, xm
, yp
, ym
;
479 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
484 pixmap
= x_bitmap_pixmap (f
, id
);
485 width
= x_bitmap_width (f
, id
);
486 height
= x_bitmap_height (f
, id
);
489 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
498 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
503 XDestroyImage (ximg
);
507 bg
= four_corners_best (ximg
, NULL
, width
, height
);
509 for (y
= 0; y
< ximg
->height
; ++y
)
511 for (x
= 0; x
< ximg
->width
; ++x
)
513 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
514 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
515 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
516 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
517 if (XGetPixel (ximg
, x
, y
) == bg
518 && XGetPixel (ximg
, x
, yp
) == bg
519 && XGetPixel (ximg
, x
, ym
) == bg
520 && XGetPixel (ximg
, xp
, y
) == bg
521 && XGetPixel (ximg
, xp
, yp
) == bg
522 && XGetPixel (ximg
, xp
, ym
) == bg
523 && XGetPixel (ximg
, xm
, y
) == bg
524 && XGetPixel (ximg
, xm
, yp
) == bg
525 && XGetPixel (ximg
, xm
, ym
) == bg
)
526 XPutPixel (mask_img
, x
, y
, 0);
528 XPutPixel (mask_img
, x
, y
, 1);
532 xassert (interrupt_input_blocked
);
533 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
534 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
536 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
538 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
539 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
541 XDestroyImage (ximg
);
542 x_destroy_x_image (mask_img
);
547 #endif /* HAVE_X_WINDOWS */
550 /***********************************************************************
552 ***********************************************************************/
554 /* Value is the number of elements of vector VECTOR. */
556 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
558 /* List of supported image types. Use define_image_type to add new
559 types. Use lookup_image_type to find a type for a given symbol. */
561 static struct image_type
*image_types
;
563 /* A list of symbols, one for each supported image type. */
565 Lisp_Object Vimage_types
;
567 /* An alist of image types and libraries that implement the type. */
569 Lisp_Object Vimage_library_alist
;
571 /* Cache for delayed-loading image types. */
573 static Lisp_Object Vimage_type_cache
;
575 /* The symbol `xbm' which is used as the type symbol for XBM images. */
581 Lisp_Object QCascent
, QCmargin
, QCrelief
, Qcount
, Qextension_data
;
582 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
583 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
587 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
589 /* Time in seconds after which images should be removed from the cache
592 Lisp_Object Vimage_cache_eviction_delay
;
594 /* Function prototypes. */
596 static Lisp_Object
define_image_type (struct image_type
*type
, int loaded
);
597 static struct image_type
*lookup_image_type (Lisp_Object symbol
);
598 static void image_error (char *format
, Lisp_Object
, Lisp_Object
);
599 static void x_laplace (struct frame
*, struct image
*);
600 static void x_emboss (struct frame
*, struct image
*);
601 static int x_build_heuristic_mask (struct frame
*, struct image
*,
604 #define CACHE_IMAGE_TYPE(type, status) \
605 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
607 #define ADD_IMAGE_TYPE(type) \
608 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
610 /* Define a new image type from TYPE. This adds a copy of TYPE to
611 image_types and caches the loading status of TYPE. */
614 define_image_type (struct image_type
*type
, int loaded
)
622 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
623 The initialized data segment is read-only. */
624 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
625 memcpy (p
, type
, sizeof *p
);
626 p
->next
= image_types
;
631 CACHE_IMAGE_TYPE (*type
->type
, success
);
636 /* Look up image type SYMBOL, and return a pointer to its image_type
637 structure. Value is null if SYMBOL is not a known image type. */
639 static INLINE
struct image_type
*
640 lookup_image_type (Lisp_Object symbol
)
642 struct image_type
*type
;
644 /* We must initialize the image-type if it hasn't been already. */
645 if (NILP (Finit_image_library (symbol
, Vimage_library_alist
)))
646 return 0; /* unimplemented */
648 for (type
= image_types
; type
; type
= type
->next
)
649 if (EQ (symbol
, *type
->type
))
656 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
657 valid image specification is a list whose car is the symbol
658 `image', and whose rest is a property list. The property list must
659 contain a value for key `:type'. That value must be the name of a
660 supported image type. The rest of the property list depends on the
664 valid_image_p (Lisp_Object object
)
672 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
673 if (EQ (XCAR (tem
), QCtype
))
676 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
678 struct image_type
*type
;
679 type
= lookup_image_type (XCAR (tem
));
681 valid_p
= type
->valid_p (object
);
692 /* Log error message with format string FORMAT and argument ARG.
693 Signaling an error, e.g. when an image cannot be loaded, is not a
694 good idea because this would interrupt redisplay, and the error
695 message display would lead to another redisplay. This function
696 therefore simply displays a message. */
699 image_error (char *format
, Lisp_Object arg1
, Lisp_Object arg2
)
701 add_to_log (format
, arg1
, arg2
);
706 /***********************************************************************
708 ***********************************************************************/
710 enum image_value_type
712 IMAGE_DONT_CHECK_VALUE_TYPE
,
714 IMAGE_STRING_OR_NIL_VALUE
,
716 IMAGE_POSITIVE_INTEGER_VALUE
,
717 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
718 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
721 IMAGE_FUNCTION_VALUE
,
726 /* Structure used when parsing image specifications. */
730 /* Name of keyword. */
733 /* The type of value allowed. */
734 enum image_value_type type
;
736 /* Non-zero means key must be present. */
739 /* Used to recognize duplicate keywords in a property list. */
742 /* The value that was found. */
747 static int parse_image_spec (Lisp_Object
, struct image_keyword
*,
749 static Lisp_Object
image_spec_value (Lisp_Object
, Lisp_Object
, int *);
752 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
753 has the format (image KEYWORD VALUE ...). One of the keyword/
754 value pairs must be `:type TYPE'. KEYWORDS is a vector of
755 image_keywords structures of size NKEYWORDS describing other
756 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
759 parse_image_spec (Lisp_Object spec
, struct image_keyword
*keywords
,
760 int nkeywords
, Lisp_Object type
)
769 while (CONSP (plist
))
771 Lisp_Object key
, value
;
773 /* First element of a pair must be a symbol. */
775 plist
= XCDR (plist
);
779 /* There must follow a value. */
782 value
= XCAR (plist
);
783 plist
= XCDR (plist
);
785 /* Find key in KEYWORDS. Error if not found. */
786 for (i
= 0; i
< nkeywords
; ++i
)
787 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
793 /* Record that we recognized the keyword. If a keywords
794 was found more than once, it's an error. */
795 keywords
[i
].value
= value
;
798 if (keywords
[i
].count
> 1)
801 /* Check type of value against allowed type. */
802 switch (keywords
[i
].type
)
804 case IMAGE_STRING_VALUE
:
805 if (!STRINGP (value
))
809 case IMAGE_STRING_OR_NIL_VALUE
:
810 if (!STRINGP (value
) && !NILP (value
))
814 case IMAGE_SYMBOL_VALUE
:
815 if (!SYMBOLP (value
))
819 case IMAGE_POSITIVE_INTEGER_VALUE
:
820 if (!INTEGERP (value
) || XINT (value
) <= 0)
824 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
825 if (INTEGERP (value
) && XINT (value
) >= 0)
828 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
829 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
833 case IMAGE_ASCENT_VALUE
:
834 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
836 else if (INTEGERP (value
)
838 && XINT (value
) <= 100)
842 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
843 if (!INTEGERP (value
) || XINT (value
) < 0)
847 case IMAGE_DONT_CHECK_VALUE_TYPE
:
850 case IMAGE_FUNCTION_VALUE
:
851 value
= indirect_function (value
);
854 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
858 case IMAGE_NUMBER_VALUE
:
859 if (!INTEGERP (value
) && !FLOATP (value
))
863 case IMAGE_INTEGER_VALUE
:
864 if (!INTEGERP (value
))
868 case IMAGE_BOOL_VALUE
:
869 if (!NILP (value
) && !EQ (value
, Qt
))
878 if (EQ (key
, QCtype
) && !EQ (type
, value
))
882 /* Check that all mandatory fields are present. */
883 for (i
= 0; i
< nkeywords
; ++i
)
884 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
891 /* Return the value of KEY in image specification SPEC. Value is nil
892 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
893 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
896 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
900 xassert (valid_image_p (spec
));
902 for (tail
= XCDR (spec
);
903 CONSP (tail
) && CONSP (XCDR (tail
));
904 tail
= XCDR (XCDR (tail
)))
906 if (EQ (XCAR (tail
), key
))
910 return XCAR (XCDR (tail
));
920 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
921 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
922 PIXELS non-nil means return the size in pixels, otherwise return the
923 size in canonical character units.
924 FRAME is the frame on which the image will be displayed. FRAME nil
925 or omitted means use the selected frame. */)
926 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
931 if (valid_image_p (spec
))
933 struct frame
*f
= check_x_frame (frame
);
934 int id
= lookup_image (f
, spec
);
935 struct image
*img
= IMAGE_FROM_ID (f
, id
);
936 int width
= img
->width
+ 2 * img
->hmargin
;
937 int height
= img
->height
+ 2 * img
->vmargin
;
940 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
941 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
943 size
= Fcons (make_number (width
), make_number (height
));
946 error ("Invalid image specification");
952 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
953 doc
: /* Return t if image SPEC has a mask bitmap.
954 FRAME is the frame on which the image will be displayed. FRAME nil
955 or omitted means use the selected frame. */)
956 (Lisp_Object spec
, Lisp_Object frame
)
961 if (valid_image_p (spec
))
963 struct frame
*f
= check_x_frame (frame
);
964 int id
= lookup_image (f
, spec
);
965 struct image
*img
= IMAGE_FROM_ID (f
, id
);
970 error ("Invalid image specification");
975 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
976 doc
: /* Return metadata for image SPEC.
977 FRAME is the frame on which the image will be displayed. FRAME nil
978 or omitted means use the selected frame. */)
979 (Lisp_Object spec
, Lisp_Object frame
)
984 if (valid_image_p (spec
))
986 struct frame
*f
= check_x_frame (frame
);
987 int id
= lookup_image (f
, spec
);
988 struct image
*img
= IMAGE_FROM_ID (f
, id
);
989 ext
= img
->data
.lisp_val
;
996 /***********************************************************************
997 Image type independent image structures
998 ***********************************************************************/
1000 static struct image
*make_image (Lisp_Object spec
, unsigned hash
);
1001 static void free_image (struct frame
*f
, struct image
*img
);
1002 static int check_image_size (struct frame
*f
, int width
, int height
);
1004 #define MAX_IMAGE_SIZE 6.0
1005 Lisp_Object Vmax_image_size
;
1007 /* Allocate and return a new image structure for image specification
1008 SPEC. SPEC has a hash value of HASH. */
1010 static struct image
*
1011 make_image (Lisp_Object spec
, unsigned int hash
)
1013 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1014 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
1016 xassert (valid_image_p (spec
));
1017 memset (img
, 0, sizeof *img
);
1018 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
1019 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1020 xassert (img
->type
!= NULL
);
1022 img
->data
.lisp_val
= Qnil
;
1023 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1025 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1030 /* Free image IMG which was used on frame F, including its resources. */
1033 free_image (struct frame
*f
, struct image
*img
)
1037 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1039 /* Remove IMG from the hash table of its cache. */
1041 img
->prev
->next
= img
->next
;
1043 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1046 img
->next
->prev
= img
->prev
;
1048 c
->images
[img
->id
] = NULL
;
1050 /* Free resources, then free IMG. */
1051 img
->type
->free (f
, img
);
1054 /* As display glyphs may still be referring to the image ID, we
1055 must garbage the frame (Bug#6426). */
1056 SET_FRAME_GARBAGED (f
);
1060 /* Return 1 if the given widths and heights are valid for display;
1061 otherwise, return 0. */
1064 check_image_size (struct frame
*f
, int width
, int height
)
1068 if (width
<= 0 || height
<= 0)
1071 if (INTEGERP (Vmax_image_size
))
1072 w
= h
= XINT (Vmax_image_size
);
1073 else if (FLOATP (Vmax_image_size
))
1077 w
= FRAME_PIXEL_WIDTH (f
);
1078 h
= FRAME_PIXEL_HEIGHT (f
);
1081 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1082 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1083 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1088 return (width
<= w
&& height
<= h
);
1091 /* Prepare image IMG for display on frame F. Must be called before
1092 drawing an image. */
1095 prepare_image_for_display (struct frame
*f
, struct image
*img
)
1099 /* We're about to display IMG, so set its timestamp to `now'. */
1101 img
->timestamp
= EMACS_SECS (t
);
1103 /* If IMG doesn't have a pixmap yet, load it now, using the image
1104 type dependent loader function. */
1105 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1106 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1111 /* Value is the number of pixels for the ascent of image IMG when
1112 drawn in face FACE. */
1115 image_ascent (struct image
*img
, struct face
*face
, struct glyph_slice
*slice
)
1120 if (slice
->height
== img
->height
)
1121 height
= img
->height
+ img
->vmargin
;
1122 else if (slice
->y
== 0)
1123 height
= slice
->height
+ img
->vmargin
;
1125 height
= slice
->height
;
1127 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1132 /* W32 specific version. Why?. ++kfs */
1133 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1134 - FONT_BASE (face
->font
)) / 2;
1136 /* This expression is arranged so that if the image can't be
1137 exactly centered, it will be moved slightly up. This is
1138 because a typical font is `top-heavy' (due to the presence
1139 uppercase letters), so the image placement should err towards
1140 being top-heavy too. It also just generally looks better. */
1141 ascent
= (height
+ FONT_BASE(face
->font
)
1142 - FONT_DESCENT(face
->font
) + 1) / 2;
1143 #endif /* HAVE_NTGUI */
1146 ascent
= height
/ 2;
1149 ascent
= (int) (height
* img
->ascent
/ 100.0);
1155 /* Image background colors. */
1157 /* Find the "best" corner color of a bitmap.
1158 On W32, XIMG is assumed to a device context with the bitmap selected. */
1160 static RGB_PIXEL_COLOR
1161 four_corners_best (XImagePtr_or_DC ximg
, int *corners
,
1162 unsigned long width
, unsigned long height
)
1164 RGB_PIXEL_COLOR corner_pixels
[4], best
;
1167 if (corners
&& corners
[BOT_CORNER
] >= 0)
1169 /* Get the colors at the corner_pixels of ximg. */
1170 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1171 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1172 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1173 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1177 /* Get the colors at the corner_pixels of ximg. */
1178 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1179 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1180 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1181 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1183 /* Choose the most frequently found color as background. */
1184 for (i
= best_count
= 0; i
< 4; ++i
)
1188 for (j
= n
= 0; j
< 4; ++j
)
1189 if (corner_pixels
[i
] == corner_pixels
[j
])
1193 best
= corner_pixels
[i
], best_count
= n
;
1199 /* Portability macros */
1203 #define Destroy_Image(img_dc, prev) \
1204 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1206 #define Free_Pixmap(display, pixmap) \
1207 DeleteObject (pixmap)
1209 #elif defined (HAVE_NS)
1211 #define Destroy_Image(ximg, dummy) \
1212 ns_release_object (ximg)
1214 #define Free_Pixmap(display, pixmap) \
1215 ns_release_object (pixmap)
1219 #define Destroy_Image(ximg, dummy) \
1220 XDestroyImage (ximg)
1222 #define Free_Pixmap(display, pixmap) \
1223 XFreePixmap (display, pixmap)
1225 #endif /* !HAVE_NTGUI && !HAVE_NS */
1228 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1229 it is guessed heuristically. If non-zero, XIMG is an existing
1230 XImage object (or device context with the image selected on W32) to
1231 use for the heuristic. */
1234 image_background (struct image
*img
, struct frame
*f
, XImagePtr_or_DC ximg
)
1236 if (! img
->background_valid
)
1237 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1239 int free_ximg
= !ximg
;
1242 #endif /* HAVE_NTGUI */
1247 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1248 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1250 HDC frame_dc
= get_frame_dc (f
);
1251 ximg
= CreateCompatibleDC (frame_dc
);
1252 release_frame_dc (f
, frame_dc
);
1253 prev
= SelectObject (ximg
, img
->pixmap
);
1254 #endif /* !HAVE_NTGUI */
1257 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1260 Destroy_Image (ximg
, prev
);
1262 img
->background_valid
= 1;
1265 return img
->background
;
1268 /* Return the `background_transparent' field of IMG. If IMG doesn't
1269 have one yet, it is guessed heuristically. If non-zero, MASK is an
1270 existing XImage object to use for the heuristic. */
1273 image_background_transparent (struct image
*img
, struct frame
*f
, XImagePtr_or_DC mask
)
1275 if (! img
->background_transparent_valid
)
1276 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1280 int free_mask
= !mask
;
1283 #endif /* HAVE_NTGUI */
1288 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1289 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1291 HDC frame_dc
= get_frame_dc (f
);
1292 mask
= CreateCompatibleDC (frame_dc
);
1293 release_frame_dc (f
, frame_dc
);
1294 prev
= SelectObject (mask
, img
->mask
);
1295 #endif /* HAVE_NTGUI */
1298 img
->background_transparent
1299 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1302 Destroy_Image (mask
, prev
);
1305 img
->background_transparent
= 0;
1307 img
->background_transparent_valid
= 1;
1310 return img
->background_transparent
;
1314 /***********************************************************************
1315 Helper functions for X image types
1316 ***********************************************************************/
1318 static void x_clear_image_1 (struct frame
*, struct image
*, int,
1320 static void x_clear_image (struct frame
*f
, struct image
*img
);
1321 static unsigned long x_alloc_image_color (struct frame
*f
,
1323 Lisp_Object color_name
,
1324 unsigned long dflt
);
1327 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1328 free the pixmap if any. MASK_P non-zero means clear the mask
1329 pixmap if any. COLORS_P non-zero means free colors allocated for
1330 the image, if any. */
1333 x_clear_image_1 (struct frame
*f
, struct image
*img
, int pixmap_p
, int mask_p
,
1336 if (pixmap_p
&& img
->pixmap
)
1338 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1339 img
->pixmap
= NO_PIXMAP
;
1340 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1341 img
->background_valid
= 0;
1344 if (mask_p
&& img
->mask
)
1346 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1347 img
->mask
= NO_PIXMAP
;
1348 img
->background_transparent_valid
= 0;
1351 if (colors_p
&& img
->ncolors
)
1353 /* W32_TODO: color table support. */
1354 #ifdef HAVE_X_WINDOWS
1355 x_free_colors (f
, img
->colors
, img
->ncolors
);
1356 #endif /* HAVE_X_WINDOWS */
1357 xfree (img
->colors
);
1364 /* Free X resources of image IMG which is used on frame F. */
1367 x_clear_image (struct frame
*f
, struct image
*img
)
1370 x_clear_image_1 (f
, img
, 1, 1, 1);
1375 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1376 cannot be allocated, use DFLT. Add a newly allocated color to
1377 IMG->colors, so that it can be freed again. Value is the pixel
1380 static unsigned long
1381 x_alloc_image_color (struct frame
*f
, struct image
*img
, Lisp_Object color_name
,
1385 unsigned long result
;
1387 xassert (STRINGP (color_name
));
1389 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1391 /* This isn't called frequently so we get away with simply
1392 reallocating the color vector to the needed size, here. */
1395 (unsigned long *) xrealloc (img
->colors
,
1396 img
->ncolors
* sizeof *img
->colors
);
1397 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1398 result
= color
.pixel
;
1408 /***********************************************************************
1410 ***********************************************************************/
1412 static struct image
*search_image_cache (struct frame
*, Lisp_Object
, unsigned);
1413 static void cache_image (struct frame
*f
, struct image
*img
);
1414 static void postprocess_image (struct frame
*, struct image
*);
1416 /* Return a new, initialized image cache that is allocated from the
1417 heap. Call free_image_cache to free an image cache. */
1419 struct image_cache
*
1420 make_image_cache (void)
1422 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1425 memset (c
, 0, sizeof *c
);
1427 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1428 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1429 c
->buckets
= (struct image
**) xmalloc (size
);
1430 memset (c
->buckets
, 0, size
);
1435 /* Find an image matching SPEC in the cache, and return it. If no
1436 image is found, return NULL. */
1437 static struct image
*
1438 search_image_cache (struct frame
*f
, Lisp_Object spec
, unsigned int hash
)
1441 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1442 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1444 if (!c
) return NULL
;
1446 /* If the image spec does not specify a background color, the cached
1447 image must have the same background color as the current frame.
1448 The foreground color must also match, for the sake of monochrome
1451 In fact, we could ignore the foreground color matching condition
1452 for color images, or if the image spec specifies :foreground;
1453 similarly we could ignore the background color matching condition
1454 for formats that don't use transparency (such as jpeg), or if the
1455 image spec specifies :background. However, the extra memory
1456 usage is probably negligible in practice, so we don't bother. */
1458 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1459 if (img
->hash
== hash
1460 && !NILP (Fequal (img
->spec
, spec
))
1461 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1462 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1468 /* Search frame F for an image with spec SPEC, and free it. */
1471 uncache_image (struct frame
*f
, Lisp_Object spec
)
1473 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1475 free_image (f
, img
);
1479 /* Free image cache of frame F. Be aware that X frames share images
1483 free_image_cache (struct frame
*f
)
1485 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1490 /* Cache should not be referenced by any frame when freed. */
1491 xassert (c
->refcount
== 0);
1493 for (i
= 0; i
< c
->used
; ++i
)
1494 free_image (f
, c
->images
[i
]);
1498 FRAME_IMAGE_CACHE (f
) = NULL
;
1503 /* Clear image cache of frame F. FILTER=t means free all images.
1504 FILTER=nil means clear only images that haven't been
1505 displayed for some time.
1506 Else, only free the images which have FILTER in their `dependencies'.
1507 Should be called from time to time to reduce the number of loaded images.
1508 If image-cache-eviction-delay is non-nil, this frees images in the cache
1509 which weren't displayed for at least that many seconds. */
1512 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1514 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1520 /* Block input so that we won't be interrupted by a SIGIO
1521 while being in an inconsistent state. */
1526 /* Filter image cache. */
1527 for (i
= 0; i
< c
->used
; ++i
)
1529 struct image
*img
= c
->images
[i
];
1530 if (img
&& (EQ (Qt
, filter
)
1531 || !NILP (Fmember (filter
, img
->dependencies
))))
1533 free_image (f
, img
);
1538 else if (INTEGERP (Vimage_cache_eviction_delay
))
1540 /* Free cache based on timestamp. */
1543 int delay
, nimages
= 0;
1545 for (i
= 0; i
< c
->used
; ++i
)
1549 /* If the number of cached images has grown unusually large,
1550 decrease the cache eviction delay (Bug#6230). */
1551 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1553 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1556 old
= EMACS_SECS (t
) - delay
;
1558 for (i
= 0; i
< c
->used
; ++i
)
1560 struct image
*img
= c
->images
[i
];
1561 if (img
&& img
->timestamp
< old
)
1563 free_image (f
, img
);
1569 /* We may be clearing the image cache because, for example,
1570 Emacs was iconified for a longer period of time. In that
1571 case, current matrices may still contain references to
1572 images freed above. So, clear these matrices. */
1575 Lisp_Object tail
, frame
;
1577 FOR_EACH_FRAME (tail
, frame
)
1579 struct frame
*f
= XFRAME (frame
);
1580 if (FRAME_IMAGE_CACHE (f
) == c
)
1581 clear_current_matrices (f
);
1584 ++windows_or_buffers_changed
;
1592 clear_image_caches (Lisp_Object filter
)
1594 /* FIXME: We want to do
1595 * struct terminal *t;
1596 * for (t = terminal_list; t; t = t->next_terminal)
1597 * clear_image_cache (t, filter); */
1598 Lisp_Object tail
, frame
;
1599 FOR_EACH_FRAME (tail
, frame
)
1600 if (FRAME_WINDOW_P (XFRAME (frame
)))
1601 clear_image_cache (XFRAME (frame
), filter
);
1604 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1606 doc
: /* Clear the image cache.
1607 FILTER nil or a frame means clear all images in the selected frame.
1608 FILTER t means clear the image caches of all frames.
1609 Anything else, means only clear those images which refer to FILTER,
1610 which is then usually a filename. */)
1611 (Lisp_Object filter
)
1613 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1614 clear_image_caches (filter
);
1616 clear_image_cache (check_x_frame (filter
), Qt
);
1622 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1624 doc
: /* Fush the image with specification SPEC on frame FRAME.
1625 This removes the image from the Emacs image cache. If SPEC specifies
1626 an image file, the next redisplay of this image will read from the
1627 current contents of that file.
1629 FRAME nil or omitted means use the selected frame.
1630 FRAME t means refresh the image on all frames. */)
1631 (Lisp_Object spec
, Lisp_Object frame
)
1633 if (!valid_image_p (spec
))
1634 error ("Invalid image specification");
1639 FOR_EACH_FRAME (tail
, frame
)
1641 struct frame
*f
= XFRAME (frame
);
1642 if (FRAME_WINDOW_P (f
))
1643 uncache_image (f
, spec
);
1647 uncache_image (check_x_frame (frame
), spec
);
1653 /* Compute masks and transform image IMG on frame F, as specified
1654 by the image's specification, */
1657 postprocess_image (struct frame
*f
, struct image
*img
)
1659 /* Manipulation of the image's mask. */
1662 Lisp_Object conversion
, spec
;
1667 /* `:heuristic-mask t'
1669 means build a mask heuristically.
1670 `:heuristic-mask (R G B)'
1671 `:mask (heuristic (R G B))'
1672 means build a mask from color (R G B) in the
1675 means remove a mask, if any. */
1677 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1679 x_build_heuristic_mask (f
, img
, mask
);
1684 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1686 if (EQ (mask
, Qheuristic
))
1687 x_build_heuristic_mask (f
, img
, Qt
);
1688 else if (CONSP (mask
)
1689 && EQ (XCAR (mask
), Qheuristic
))
1691 if (CONSP (XCDR (mask
)))
1692 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1694 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1696 else if (NILP (mask
) && found_p
&& img
->mask
)
1698 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1699 img
->mask
= NO_PIXMAP
;
1704 /* Should we apply an image transformation algorithm? */
1705 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1706 if (EQ (conversion
, Qdisabled
))
1707 x_disable_image (f
, img
);
1708 else if (EQ (conversion
, Qlaplace
))
1710 else if (EQ (conversion
, Qemboss
))
1712 else if (CONSP (conversion
)
1713 && EQ (XCAR (conversion
), Qedge_detection
))
1716 tem
= XCDR (conversion
);
1718 x_edge_detection (f
, img
,
1719 Fplist_get (tem
, QCmatrix
),
1720 Fplist_get (tem
, QCcolor_adjustment
));
1726 /* Return the id of image with Lisp specification SPEC on frame F.
1727 SPEC must be a valid Lisp image specification (see valid_image_p). */
1730 lookup_image (struct frame
*f
, Lisp_Object spec
)
1732 struct image_cache
*c
;
1735 struct gcpro gcpro1
;
1738 /* F must be a window-system frame, and SPEC must be a valid image
1740 xassert (FRAME_WINDOW_P (f
));
1741 xassert (valid_image_p (spec
));
1743 c
= FRAME_IMAGE_CACHE (f
);
1747 /* Look up SPEC in the hash table of the image cache. */
1748 hash
= sxhash (spec
, 0);
1749 img
= search_image_cache (f
, spec
, hash
);
1750 if (img
&& img
->load_failed_p
)
1752 free_image (f
, img
);
1756 /* If not found, create a new image and cache it. */
1759 extern Lisp_Object Qpostscript
;
1762 img
= make_image (spec
, hash
);
1763 cache_image (f
, img
);
1764 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1765 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1766 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1768 /* If we can't load the image, and we don't have a width and
1769 height, use some arbitrary width and height so that we can
1770 draw a rectangle for it. */
1771 if (img
->load_failed_p
)
1775 value
= image_spec_value (spec
, QCwidth
, NULL
);
1776 img
->width
= (INTEGERP (value
)
1777 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1778 value
= image_spec_value (spec
, QCheight
, NULL
);
1779 img
->height
= (INTEGERP (value
)
1780 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1784 /* Handle image type independent image attributes
1785 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1786 `:background COLOR'. */
1787 Lisp_Object ascent
, margin
, relief
, bg
;
1789 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1790 if (INTEGERP (ascent
))
1791 img
->ascent
= XFASTINT (ascent
);
1792 else if (EQ (ascent
, Qcenter
))
1793 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1795 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1796 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1797 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1798 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1799 && INTEGERP (XCDR (margin
)))
1801 if (XINT (XCAR (margin
)) > 0)
1802 img
->hmargin
= XFASTINT (XCAR (margin
));
1803 if (XINT (XCDR (margin
)) > 0)
1804 img
->vmargin
= XFASTINT (XCDR (margin
));
1807 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1808 if (INTEGERP (relief
))
1810 img
->relief
= XINT (relief
);
1811 img
->hmargin
+= eabs (img
->relief
);
1812 img
->vmargin
+= eabs (img
->relief
);
1815 if (! img
->background_valid
)
1817 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1821 = x_alloc_image_color (f
, img
, bg
,
1822 FRAME_BACKGROUND_PIXEL (f
));
1823 img
->background_valid
= 1;
1827 /* Do image transformations and compute masks, unless we
1828 don't have the image yet. */
1829 if (!EQ (*img
->type
->type
, Qpostscript
))
1830 postprocess_image (f
, img
);
1836 /* We're using IMG, so set its timestamp to `now'. */
1837 EMACS_GET_TIME (now
);
1838 img
->timestamp
= EMACS_SECS (now
);
1842 /* Value is the image id. */
1847 /* Cache image IMG in the image cache of frame F. */
1850 cache_image (struct frame
*f
, struct image
*img
)
1852 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1855 /* Find a free slot in c->images. */
1856 for (i
= 0; i
< c
->used
; ++i
)
1857 if (c
->images
[i
] == NULL
)
1860 /* If no free slot found, maybe enlarge c->images. */
1861 if (i
== c
->used
&& c
->used
== c
->size
)
1864 c
->images
= (struct image
**) xrealloc (c
->images
,
1865 c
->size
* sizeof *c
->images
);
1868 /* Add IMG to c->images, and assign IMG an id. */
1874 /* Add IMG to the cache's hash table. */
1875 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1876 img
->next
= c
->buckets
[i
];
1878 img
->next
->prev
= img
;
1880 c
->buckets
[i
] = img
;
1884 /* Call FN on every image in the image cache of frame F. Used to mark
1885 Lisp Objects in the image cache. */
1887 /* Mark Lisp objects in image IMG. */
1890 mark_image (struct image
*img
)
1892 mark_object (img
->spec
);
1893 mark_object (img
->dependencies
);
1895 if (!NILP (img
->data
.lisp_val
))
1896 mark_object (img
->data
.lisp_val
);
1901 mark_image_cache (struct image_cache
*c
)
1906 for (i
= 0; i
< c
->used
; ++i
)
1908 mark_image (c
->images
[i
]);
1914 /***********************************************************************
1915 X / NS / W32 support code
1916 ***********************************************************************/
1920 /* Macro for defining functions that will be loaded from image DLLs. */
1921 #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)()
1923 /* Macro for loading those image functions from the library. */
1924 #define LOAD_IMGLIB_FN(lib,func) { \
1925 fn_##func = (void *) GetProcAddress (lib, #func); \
1926 if (!fn_##func) return 0; \
1929 /* Load a DLL implementing an image type.
1930 The `image-library-alist' variable associates a symbol,
1931 identifying an image type, to a list of possible filenames.
1932 The function returns NULL if no library could be loaded for
1933 the given image type, or if the library was previously loaded;
1934 else the handle of the DLL. */
1936 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
1938 HMODULE library
= NULL
;
1940 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
1942 Lisp_Object dlls
= Fassq (type
, libraries
);
1945 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
1947 CHECK_STRING_CAR (dlls
);
1948 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
1956 #endif /* HAVE_NTGUI */
1958 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1959 XImagePtr
*, Pixmap
*);
1960 static void x_destroy_x_image (XImagePtr
);
1961 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1964 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1965 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1966 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1967 via xmalloc. Print error messages via image_error if an error
1968 occurs. Value is non-zero if successful.
1970 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1971 should indicate the bit depth of the image. */
1974 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1975 XImagePtr
*ximg
, Pixmap
*pixmap
)
1977 #ifdef HAVE_X_WINDOWS
1978 Display
*display
= FRAME_X_DISPLAY (f
);
1979 Window window
= FRAME_X_WINDOW (f
);
1980 Screen
*screen
= FRAME_X_SCREEN (f
);
1982 xassert (interrupt_input_blocked
);
1985 depth
= DefaultDepthOfScreen (screen
);
1986 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1987 depth
, ZPixmap
, 0, NULL
, width
, height
,
1988 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1991 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1995 /* Allocate image raster. */
1996 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1998 /* Allocate a pixmap of the same size. */
1999 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2000 if (*pixmap
== NO_PIXMAP
)
2002 x_destroy_x_image (*ximg
);
2004 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2009 #endif /* HAVE_X_WINDOWS */
2013 BITMAPINFOHEADER
*header
;
2015 int scanline_width_bits
;
2017 int palette_colors
= 0;
2022 if (depth
!= 1 && depth
!= 4 && depth
!= 8
2023 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2025 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2029 scanline_width_bits
= width
* depth
;
2030 remainder
= scanline_width_bits
% 32;
2033 scanline_width_bits
+= 32 - remainder
;
2035 /* Bitmaps with a depth less than 16 need a palette. */
2036 /* BITMAPINFO structure already contains the first RGBQUAD. */
2038 palette_colors
= 1 << depth
- 1;
2040 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2043 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2047 header
= &(*ximg
)->info
.bmiHeader
;
2048 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
2049 header
->biSize
= sizeof (*header
);
2050 header
->biWidth
= width
;
2051 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2052 header
->biPlanes
= 1;
2053 header
->biBitCount
= depth
;
2054 header
->biCompression
= BI_RGB
;
2055 header
->biClrUsed
= palette_colors
;
2057 /* TODO: fill in palette. */
2060 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2061 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2062 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2063 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2064 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2065 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2066 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2067 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2070 hdc
= get_frame_dc (f
);
2072 /* Create a DIBSection and raster array for the bitmap,
2073 and store its handle in *pixmap. */
2074 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2075 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2076 /* casting avoids a GCC warning */
2077 (void **)&((*ximg
)->data
), NULL
, 0);
2079 /* Realize display palette and garbage all frames. */
2080 release_frame_dc (f
, hdc
);
2082 if (*pixmap
== NULL
)
2084 DWORD err
= GetLastError ();
2085 Lisp_Object errcode
;
2086 /* All system errors are < 10000, so the following is safe. */
2087 XSETINT (errcode
, (int) err
);
2088 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2089 x_destroy_x_image (*ximg
);
2095 #endif /* HAVE_NTGUI */
2098 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2102 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2111 /* Destroy XImage XIMG. Free XIMG->data. */
2114 x_destroy_x_image (XImagePtr ximg
)
2116 xassert (interrupt_input_blocked
);
2119 #ifdef HAVE_X_WINDOWS
2122 XDestroyImage (ximg
);
2123 #endif /* HAVE_X_WINDOWS */
2125 /* Data will be freed by DestroyObject. */
2128 #endif /* HAVE_NTGUI */
2130 ns_release_object (ximg
);
2131 #endif /* HAVE_NS */
2136 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2137 are width and height of both the image and pixmap. */
2140 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2142 #ifdef HAVE_X_WINDOWS
2145 xassert (interrupt_input_blocked
);
2146 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2147 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2148 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2149 #endif /* HAVE_X_WINDOWS */
2152 #if 0 /* I don't think this is necessary looking at where it is used. */
2153 HDC hdc
= get_frame_dc (f
);
2154 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2155 release_frame_dc (f
, hdc
);
2157 #endif /* HAVE_NTGUI */
2160 xassert (ximg
== pixmap
);
2161 ns_retain_object (ximg
);
2166 /***********************************************************************
2168 ***********************************************************************/
2170 static unsigned char *slurp_file (char *, int *);
2173 /* Find image file FILE. Look in data-directory/images, then
2174 x-bitmap-file-path. Value is the encoded full name of the file
2175 found, or nil if not found. */
2178 x_find_image_file (Lisp_Object file
)
2180 Lisp_Object file_found
, search_path
;
2181 struct gcpro gcpro1
, gcpro2
;
2185 /* TODO I think this should use something like image-load-path
2186 instead. Unfortunately, that can contain non-string elements. */
2187 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2189 Vx_bitmap_file_path
);
2190 GCPRO2 (file_found
, search_path
);
2192 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2193 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2199 file_found
= ENCODE_FILE (file_found
);
2208 /* Read FILE into memory. Value is a pointer to a buffer allocated
2209 with xmalloc holding FILE's contents. Value is null if an error
2210 occurred. *SIZE is set to the size of the file. */
2212 static unsigned char *
2213 slurp_file (char *file
, int *size
)
2216 unsigned char *buf
= NULL
;
2219 if (stat (file
, &st
) == 0
2220 && (fp
= fopen (file
, "rb")) != NULL
2221 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2222 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2243 /***********************************************************************
2245 ***********************************************************************/
2247 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2248 static int xbm_load (struct frame
*f
, struct image
*img
);
2249 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2250 unsigned char *, unsigned char *);
2251 static int xbm_image_p (Lisp_Object object
);
2252 static int xbm_read_bitmap_data (struct frame
*f
,
2253 unsigned char *, unsigned char *,
2254 int *, int *, unsigned char **, int);
2255 static int xbm_file_p (Lisp_Object
);
2258 /* Indices of image specification fields in xbm_format, below. */
2260 enum xbm_keyword_index
2278 /* Vector of image_keyword structures describing the format
2279 of valid XBM image specifications. */
2281 static const struct image_keyword xbm_format
[XBM_LAST
] =
2283 {":type", IMAGE_SYMBOL_VALUE
, 1},
2284 {":file", IMAGE_STRING_VALUE
, 0},
2285 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2286 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2287 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2288 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2289 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2290 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2291 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2292 {":relief", IMAGE_INTEGER_VALUE
, 0},
2293 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2294 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2295 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2298 /* Structure describing the image type XBM. */
2300 static struct image_type xbm_type
=
2309 /* Tokens returned from xbm_scan. */
2318 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2319 A valid specification is a list starting with the symbol `image'
2320 The rest of the list is a property list which must contain an
2323 If the specification specifies a file to load, it must contain
2324 an entry `:file FILENAME' where FILENAME is a string.
2326 If the specification is for a bitmap loaded from memory it must
2327 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2328 WIDTH and HEIGHT are integers > 0. DATA may be:
2330 1. a string large enough to hold the bitmap data, i.e. it must
2331 have a size >= (WIDTH + 7) / 8 * HEIGHT
2333 2. a bool-vector of size >= WIDTH * HEIGHT
2335 3. a vector of strings or bool-vectors, one for each line of the
2338 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2339 may not be specified in this case because they are defined in the
2342 Both the file and data forms may contain the additional entries
2343 `:background COLOR' and `:foreground COLOR'. If not present,
2344 foreground and background of the frame on which the image is
2345 displayed is used. */
2348 xbm_image_p (Lisp_Object object
)
2350 struct image_keyword kw
[XBM_LAST
];
2352 memcpy (kw
, xbm_format
, sizeof kw
);
2353 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2356 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2358 if (kw
[XBM_FILE
].count
)
2360 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2363 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2365 /* In-memory XBM file. */
2366 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2374 /* Entries for `:width', `:height' and `:data' must be present. */
2375 if (!kw
[XBM_WIDTH
].count
2376 || !kw
[XBM_HEIGHT
].count
2377 || !kw
[XBM_DATA
].count
)
2380 data
= kw
[XBM_DATA
].value
;
2381 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2382 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2384 /* Check type of data, and width and height against contents of
2390 /* Number of elements of the vector must be >= height. */
2391 if (XVECTOR (data
)->size
< height
)
2394 /* Each string or bool-vector in data must be large enough
2395 for one line of the image. */
2396 for (i
= 0; i
< height
; ++i
)
2398 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2403 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2406 else if (BOOL_VECTOR_P (elt
))
2408 if (XBOOL_VECTOR (elt
)->size
< width
)
2415 else if (STRINGP (data
))
2418 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2421 else if (BOOL_VECTOR_P (data
))
2423 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2434 /* Scan a bitmap file. FP is the stream to read from. Value is
2435 either an enumerator from enum xbm_token, or a character for a
2436 single-character token, or 0 at end of file. If scanning an
2437 identifier, store the lexeme of the identifier in SVAL. If
2438 scanning a number, store its value in *IVAL. */
2441 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2447 /* Skip white space. */
2448 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2453 else if (isdigit (c
))
2455 int value
= 0, digit
;
2457 if (c
== '0' && *s
< end
)
2460 if (c
== 'x' || c
== 'X')
2467 else if (c
>= 'a' && c
<= 'f')
2468 digit
= c
- 'a' + 10;
2469 else if (c
>= 'A' && c
<= 'F')
2470 digit
= c
- 'A' + 10;
2473 value
= 16 * value
+ digit
;
2476 else if (isdigit (c
))
2480 && (c
= *(*s
)++, isdigit (c
)))
2481 value
= 8 * value
+ c
- '0';
2488 && (c
= *(*s
)++, isdigit (c
)))
2489 value
= 10 * value
+ c
- '0';
2497 else if (isalpha (c
) || c
== '_')
2501 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2508 else if (c
== '/' && **s
== '*')
2510 /* C-style comment. */
2512 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2526 /* Create a Windows bitmap from X bitmap data. */
2528 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2530 static unsigned char swap_nibble
[16]
2531 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2532 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2533 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2534 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2536 unsigned char *bits
, *p
;
2539 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2540 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2541 bits
= (unsigned char *) alloca (height
* w2
);
2542 memset (bits
, 0, height
* w2
);
2543 for (i
= 0; i
< height
; i
++)
2546 for (j
= 0; j
< w1
; j
++)
2548 /* Bitswap XBM bytes to match how Windows does things. */
2549 unsigned char c
= *data
++;
2550 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2551 | (swap_nibble
[(c
>>4) & 0xf]));
2554 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2560 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2561 COLORREF foreground
, COLORREF background
)
2563 HDC hdc
, old_img_dc
, new_img_dc
;
2564 HGDIOBJ old_prev
, new_prev
;
2567 hdc
= get_frame_dc (f
);
2568 old_img_dc
= CreateCompatibleDC (hdc
);
2569 new_img_dc
= CreateCompatibleDC (hdc
);
2570 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2571 release_frame_dc (f
, hdc
);
2572 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2573 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2574 /* Windows convention for mono bitmaps is black = background,
2575 white = foreground. */
2576 SetTextColor (new_img_dc
, background
);
2577 SetBkColor (new_img_dc
, foreground
);
2579 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2582 SelectObject (old_img_dc
, old_prev
);
2583 SelectObject (new_img_dc
, new_prev
);
2584 DeleteDC (old_img_dc
);
2585 DeleteDC (new_img_dc
);
2586 DeleteObject (img
->pixmap
);
2587 if (new_pixmap
== 0)
2588 fprintf (stderr
, "Failed to convert image to color.\n");
2590 img
->pixmap
= new_pixmap
;
2593 #define XBM_BIT_SHUFFLE(b) (~(b))
2597 #define XBM_BIT_SHUFFLE(b) (b)
2599 #endif /* HAVE_NTGUI */
2603 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2604 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2605 int non_default_colors
)
2609 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2611 /* If colors were specified, transfer the bitmap to a color one. */
2612 if (non_default_colors
)
2613 convert_mono_to_color_image (f
, img
, fg
, bg
);
2615 #elif defined (HAVE_NS)
2616 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2620 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2623 img
->width
, img
->height
,
2625 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2626 #endif /* !HAVE_NTGUI && !HAVE_NS */
2631 /* Replacement for XReadBitmapFileData which isn't available under old
2632 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2633 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2634 the image. Return in *DATA the bitmap data allocated with xmalloc.
2635 Value is non-zero if successful. DATA null means just test if
2636 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2637 is non-zero, inhibit the call to image_error when the image size is
2638 invalid (the bitmap remains unread). */
2641 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2642 int *width
, int *height
, unsigned char **data
,
2643 int inhibit_image_error
)
2645 unsigned char *s
= contents
;
2646 char buffer
[BUFSIZ
];
2649 int bytes_per_line
, i
, nbytes
;
2655 LA1 = xbm_scan (&s, end, buffer, &value)
2657 #define expect(TOKEN) \
2658 if (LA1 != (TOKEN)) \
2663 #define expect_ident(IDENT) \
2664 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2669 *width
= *height
= -1;
2672 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2674 /* Parse defines for width, height and hot-spots. */
2678 expect_ident ("define");
2679 expect (XBM_TK_IDENT
);
2681 if (LA1
== XBM_TK_NUMBER
)
2683 char *p
= strrchr (buffer
, '_');
2684 p
= p
? p
+ 1 : buffer
;
2685 if (strcmp (p
, "width") == 0)
2687 else if (strcmp (p
, "height") == 0)
2690 expect (XBM_TK_NUMBER
);
2693 if (!check_image_size (f
, *width
, *height
))
2695 if (!inhibit_image_error
)
2696 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2699 else if (data
== NULL
)
2702 /* Parse bits. Must start with `static'. */
2703 expect_ident ("static");
2704 if (LA1
== XBM_TK_IDENT
)
2706 if (strcmp (buffer
, "unsigned") == 0)
2709 expect_ident ("char");
2711 else if (strcmp (buffer
, "short") == 0)
2715 if (*width
% 16 && *width
% 16 < 9)
2718 else if (strcmp (buffer
, "char") == 0)
2726 expect (XBM_TK_IDENT
);
2732 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2733 nbytes
= bytes_per_line
* *height
;
2734 p
= *data
= (unsigned char *) xmalloc (nbytes
);
2738 for (i
= 0; i
< nbytes
; i
+= 2)
2741 expect (XBM_TK_NUMBER
);
2743 *p
++ = XBM_BIT_SHUFFLE (val
);
2744 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2745 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2747 if (LA1
== ',' || LA1
== '}')
2755 for (i
= 0; i
< nbytes
; ++i
)
2758 expect (XBM_TK_NUMBER
);
2760 *p
++ = XBM_BIT_SHUFFLE (val
);
2762 if (LA1
== ',' || LA1
== '}')
2787 /* Load XBM image IMG which will be displayed on frame F from buffer
2788 CONTENTS. END is the end of the buffer. Value is non-zero if
2792 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2796 unsigned char *data
;
2799 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2803 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2804 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2805 int non_default_colors
= 0;
2808 xassert (img
->width
> 0 && img
->height
> 0);
2810 /* Get foreground and background colors, maybe allocate colors. */
2811 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2814 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2815 non_default_colors
= 1;
2817 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2820 background
= x_alloc_image_color (f
, img
, value
, background
);
2821 img
->background
= background
;
2822 img
->background_valid
= 1;
2823 non_default_colors
= 1;
2826 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2827 foreground
, background
,
2828 non_default_colors
);
2831 if (img
->pixmap
== NO_PIXMAP
)
2833 x_clear_image (f
, img
);
2834 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2840 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2846 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2849 xbm_file_p (Lisp_Object data
)
2852 return (STRINGP (data
)
2853 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2854 (SDATA (data
) + SBYTES (data
)),
2859 /* Fill image IMG which is used on frame F with pixmap data. Value is
2860 non-zero if successful. */
2863 xbm_load (struct frame
*f
, struct image
*img
)
2866 Lisp_Object file_name
;
2868 xassert (xbm_image_p (img
->spec
));
2870 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2871 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2872 if (STRINGP (file_name
))
2875 unsigned char *contents
;
2877 struct gcpro gcpro1
;
2879 file
= x_find_image_file (file_name
);
2881 if (!STRINGP (file
))
2883 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2888 contents
= slurp_file (SDATA (file
), &size
);
2889 if (contents
== NULL
)
2891 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2896 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2901 struct image_keyword fmt
[XBM_LAST
];
2903 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2904 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2905 int non_default_colors
= 0;
2908 int in_memory_file_p
= 0;
2910 /* See if data looks like an in-memory XBM file. */
2911 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2912 in_memory_file_p
= xbm_file_p (data
);
2914 /* Parse the image specification. */
2915 memcpy (fmt
, xbm_format
, sizeof fmt
);
2916 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2919 /* Get specified width, and height. */
2920 if (!in_memory_file_p
)
2922 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2923 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2924 xassert (img
->width
> 0 && img
->height
> 0);
2927 /* Get foreground and background colors, maybe allocate colors. */
2928 if (fmt
[XBM_FOREGROUND
].count
2929 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2931 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2933 non_default_colors
= 1;
2936 if (fmt
[XBM_BACKGROUND
].count
2937 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2939 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2941 non_default_colors
= 1;
2944 if (in_memory_file_p
)
2945 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2954 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2956 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2957 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2959 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2961 memcpy (p
, SDATA (line
), nbytes
);
2963 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2966 else if (STRINGP (data
))
2967 bits
= SDATA (data
);
2969 bits
= XBOOL_VECTOR (data
)->data
;
2975 /* Windows mono bitmaps are reversed compared with X. */
2976 invertedBits
= bits
;
2977 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2979 bits
= (char *) alloca (nbytes
);
2980 for (i
= 0; i
< nbytes
; i
++)
2981 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2984 /* Create the pixmap. */
2986 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2987 foreground
, background
,
2988 non_default_colors
);
2993 image_error ("Unable to create pixmap for XBM image `%s'",
2995 x_clear_image (f
, img
);
3005 /***********************************************************************
3007 ***********************************************************************/
3009 #if defined (HAVE_XPM) || defined (HAVE_NS)
3011 static int xpm_image_p (Lisp_Object object
);
3012 static int xpm_load (struct frame
*f
, struct image
*img
);
3013 static int xpm_valid_color_symbols_p (Lisp_Object
);
3015 #endif /* HAVE_XPM || HAVE_NS */
3019 /* Indicate to xpm.h that we don't have Xlib. */
3021 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3022 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3023 #define XColor xpm_XColor
3024 #define XImage xpm_XImage
3025 #define Display xpm_Display
3026 #define PIXEL_ALREADY_TYPEDEFED
3027 #include "X11/xpm.h"
3032 #undef PIXEL_ALREADY_TYPEDEFED
3034 #include "X11/xpm.h"
3035 #endif /* HAVE_NTGUI */
3036 #endif /* HAVE_XPM */
3038 #if defined (HAVE_XPM) || defined (HAVE_NS)
3039 /* The symbol `xpm' identifying XPM-format images. */
3043 /* Indices of image specification fields in xpm_format, below. */
3045 enum xpm_keyword_index
3061 /* Vector of image_keyword structures describing the format
3062 of valid XPM image specifications. */
3064 static const struct image_keyword xpm_format
[XPM_LAST
] =
3066 {":type", IMAGE_SYMBOL_VALUE
, 1},
3067 {":file", IMAGE_STRING_VALUE
, 0},
3068 {":data", IMAGE_STRING_VALUE
, 0},
3069 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3070 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3071 {":relief", IMAGE_INTEGER_VALUE
, 0},
3072 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3073 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3074 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3075 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3076 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3079 /* Structure describing the image type XPM. */
3081 static struct image_type xpm_type
=
3090 #ifdef HAVE_X_WINDOWS
3092 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3093 functions for allocating image colors. Our own functions handle
3094 color allocation failures more gracefully than the ones on the XPM
3097 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3098 #define ALLOC_XPM_COLORS
3100 #endif /* HAVE_X_WINDOWS */
3102 #ifdef ALLOC_XPM_COLORS
3104 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3105 static void xpm_free_color_cache (void);
3106 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3107 static int xpm_color_bucket (char *);
3108 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3111 /* An entry in a hash table used to cache color definitions of named
3112 colors. This cache is necessary to speed up XPM image loading in
3113 case we do color allocations ourselves. Without it, we would need
3114 a call to XParseColor per pixel in the image. */
3116 struct xpm_cached_color
3118 /* Next in collision chain. */
3119 struct xpm_cached_color
*next
;
3121 /* Color definition (RGB and pixel color). */
3128 /* The hash table used for the color cache, and its bucket vector
3131 #define XPM_COLOR_CACHE_BUCKETS 1001
3132 struct xpm_cached_color
**xpm_color_cache
;
3134 /* Initialize the color cache. */
3137 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3139 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3140 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3141 memset (xpm_color_cache
, 0, nbytes
);
3142 init_color_table ();
3144 if (attrs
->valuemask
& XpmColorSymbols
)
3149 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3150 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3151 attrs
->colorsymbols
[i
].value
, &color
))
3153 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3155 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3160 /* Free the color cache. */
3163 xpm_free_color_cache (void)
3165 struct xpm_cached_color
*p
, *next
;
3168 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3169 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3175 xfree (xpm_color_cache
);
3176 xpm_color_cache
= NULL
;
3177 free_color_table ();
3180 /* Return the bucket index for color named COLOR_NAME in the color
3184 xpm_color_bucket (char *color_name
)
3189 for (s
= color_name
; *s
; ++s
)
3191 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3195 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3196 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3199 static struct xpm_cached_color
*
3200 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3203 struct xpm_cached_color
*p
;
3206 bucket
= xpm_color_bucket (color_name
);
3208 nbytes
= sizeof *p
+ strlen (color_name
);
3209 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3210 strcpy (p
->name
, color_name
);
3212 p
->next
= xpm_color_cache
[bucket
];
3213 xpm_color_cache
[bucket
] = p
;
3217 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3218 return the cached definition in *COLOR. Otherwise, make a new
3219 entry in the cache and allocate the color. Value is zero if color
3220 allocation failed. */
3223 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3225 struct xpm_cached_color
*p
;
3226 int h
= xpm_color_bucket (color_name
);
3228 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3229 if (strcmp (p
->name
, color_name
) == 0)
3234 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3237 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3239 p
= xpm_cache_color (f
, color_name
, color
, h
);
3241 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3242 with transparency, and it's useful. */
3243 else if (strcmp ("opaque", color_name
) == 0)
3245 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3246 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3247 p
= xpm_cache_color (f
, color_name
, color
, h
);
3254 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3255 CLOSURE is a pointer to the frame on which we allocate the
3256 color. Return in *COLOR the allocated color. Value is non-zero
3260 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3263 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3267 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3268 is a pointer to the frame on which we allocate the color. Value is
3269 non-zero if successful. */
3272 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3277 #endif /* ALLOC_XPM_COLORS */
3282 /* XPM library details. */
3284 DEF_IMGLIB_FN (XpmFreeAttributes
);
3285 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3286 DEF_IMGLIB_FN (XpmReadFileToImage
);
3287 DEF_IMGLIB_FN (XImageFree
);
3290 init_xpm_functions (Lisp_Object libraries
)
3294 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3297 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3298 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3299 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3300 LOAD_IMGLIB_FN (library
, XImageFree
);
3304 #endif /* HAVE_NTGUI */
3307 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3308 for XPM images. Such a list must consist of conses whose car and
3312 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3314 while (CONSP (color_symbols
))
3316 Lisp_Object sym
= XCAR (color_symbols
);
3318 || !STRINGP (XCAR (sym
))
3319 || !STRINGP (XCDR (sym
)))
3321 color_symbols
= XCDR (color_symbols
);
3324 return NILP (color_symbols
);
3328 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3331 xpm_image_p (Lisp_Object object
)
3333 struct image_keyword fmt
[XPM_LAST
];
3334 memcpy (fmt
, xpm_format
, sizeof fmt
);
3335 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3336 /* Either `:file' or `:data' must be present. */
3337 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3338 /* Either no `:color-symbols' or it's a list of conses
3339 whose car and cdr are strings. */
3340 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3341 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3344 #endif /* HAVE_XPM || HAVE_NS */
3346 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3348 x_create_bitmap_from_xpm_data (struct frame
*f
, char **bits
)
3350 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3352 XpmAttributes attrs
;
3353 Pixmap bitmap
, mask
;
3355 memset (&attrs
, 0, sizeof attrs
);
3357 attrs
.visual
= FRAME_X_VISUAL (f
);
3358 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3359 attrs
.valuemask
|= XpmVisual
;
3360 attrs
.valuemask
|= XpmColormap
;
3362 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3363 bits
, &bitmap
, &mask
, &attrs
);
3364 if (rc
!= XpmSuccess
)
3366 XpmFreeAttributes (&attrs
);
3370 id
= x_allocate_bitmap_record (f
);
3371 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3372 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3373 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3374 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3375 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3376 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3377 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3378 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3380 XpmFreeAttributes (&attrs
);
3383 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3385 /* Load image IMG which will be displayed on frame F. Value is
3386 non-zero if successful. */
3391 xpm_load (struct frame
*f
, struct image
*img
)
3394 XpmAttributes attrs
;
3395 Lisp_Object specified_file
, color_symbols
;
3398 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3399 #endif /* HAVE_NTGUI */
3401 /* Configure the XPM lib. Use the visual of frame F. Allocate
3402 close colors. Return colors allocated. */
3403 memset (&attrs
, 0, sizeof attrs
);
3406 attrs
.visual
= FRAME_X_VISUAL (f
);
3407 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3408 attrs
.valuemask
|= XpmVisual
;
3409 attrs
.valuemask
|= XpmColormap
;
3410 #endif /* HAVE_NTGUI */
3412 #ifdef ALLOC_XPM_COLORS
3413 /* Allocate colors with our own functions which handle
3414 failing color allocation more gracefully. */
3415 attrs
.color_closure
= f
;
3416 attrs
.alloc_color
= xpm_alloc_color
;
3417 attrs
.free_colors
= xpm_free_colors
;
3418 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3419 #else /* not ALLOC_XPM_COLORS */
3420 /* Let the XPM lib allocate colors. */
3421 attrs
.valuemask
|= XpmReturnAllocPixels
;
3422 #ifdef XpmAllocCloseColors
3423 attrs
.alloc_close_colors
= 1;
3424 attrs
.valuemask
|= XpmAllocCloseColors
;
3425 #else /* not XpmAllocCloseColors */
3426 attrs
.closeness
= 600;
3427 attrs
.valuemask
|= XpmCloseness
;
3428 #endif /* not XpmAllocCloseColors */
3429 #endif /* ALLOC_XPM_COLORS */
3431 /* If image specification contains symbolic color definitions, add
3432 these to `attrs'. */
3433 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3434 if (CONSP (color_symbols
))
3437 XpmColorSymbol
*xpm_syms
;
3440 attrs
.valuemask
|= XpmColorSymbols
;
3442 /* Count number of symbols. */
3443 attrs
.numsymbols
= 0;
3444 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3447 /* Allocate an XpmColorSymbol array. */
3448 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3449 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3450 memset (xpm_syms
, 0, size
);
3451 attrs
.colorsymbols
= xpm_syms
;
3453 /* Fill the color symbol array. */
3454 for (tail
= color_symbols
, i
= 0;
3456 ++i
, tail
= XCDR (tail
))
3458 Lisp_Object name
= XCAR (XCAR (tail
));
3459 Lisp_Object color
= XCDR (XCAR (tail
));
3460 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3461 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3462 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3463 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3467 /* Create a pixmap for the image, either from a file, or from a
3468 string buffer containing data in the same format as an XPM file. */
3469 #ifdef ALLOC_XPM_COLORS
3470 xpm_init_color_cache (f
, &attrs
);
3473 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3477 HDC frame_dc
= get_frame_dc (f
);
3478 hdc
= CreateCompatibleDC (frame_dc
);
3479 release_frame_dc (f
, frame_dc
);
3481 #endif /* HAVE_NTGUI */
3483 if (STRINGP (specified_file
))
3485 Lisp_Object file
= x_find_image_file (specified_file
);
3486 if (!STRINGP (file
))
3488 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3493 /* XpmReadFileToPixmap is not available in the Windows port of
3494 libxpm. But XpmReadFileToImage almost does what we want. */
3495 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3496 &xpm_image
, &xpm_mask
,
3499 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3500 SDATA (file
), &img
->pixmap
, &img
->mask
,
3502 #endif /* HAVE_NTGUI */
3506 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3508 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3509 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3510 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3511 &xpm_image
, &xpm_mask
,
3514 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3516 &img
->pixmap
, &img
->mask
,
3518 #endif /* HAVE_NTGUI */
3521 if (rc
== XpmSuccess
)
3523 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3524 img
->colors
= colors_in_color_table (&img
->ncolors
);
3525 #else /* not ALLOC_XPM_COLORS */
3529 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3530 plus some duplicate attributes. */
3531 if (xpm_image
&& xpm_image
->bitmap
)
3533 img
->pixmap
= xpm_image
->bitmap
;
3534 /* XImageFree in libXpm frees XImage struct without destroying
3535 the bitmap, which is what we want. */
3536 fn_XImageFree (xpm_image
);
3538 if (xpm_mask
&& xpm_mask
->bitmap
)
3540 /* The mask appears to be inverted compared with what we expect.
3541 TODO: invert our expectations. See other places where we
3542 have to invert bits because our idea of masks is backwards. */
3544 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3546 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3547 SelectObject (hdc
, old_obj
);
3549 img
->mask
= xpm_mask
->bitmap
;
3550 fn_XImageFree (xpm_mask
);
3555 #endif /* HAVE_NTGUI */
3557 /* Remember allocated colors. */
3558 img
->ncolors
= attrs
.nalloc_pixels
;
3559 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3560 * sizeof *img
->colors
);
3561 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3563 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3564 #ifdef DEBUG_X_COLORS
3565 register_color (img
->colors
[i
]);
3568 #endif /* not ALLOC_XPM_COLORS */
3570 img
->width
= attrs
.width
;
3571 img
->height
= attrs
.height
;
3572 xassert (img
->width
> 0 && img
->height
> 0);
3574 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3576 fn_XpmFreeAttributes (&attrs
);
3578 XpmFreeAttributes (&attrs
);
3579 #endif /* HAVE_NTGUI */
3585 #endif /* HAVE_NTGUI */
3590 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3593 case XpmFileInvalid
:
3594 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3598 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3601 case XpmColorFailed
:
3602 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3606 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3611 #ifdef ALLOC_XPM_COLORS
3612 xpm_free_color_cache ();
3614 return rc
== XpmSuccess
;
3617 #endif /* HAVE_XPM */
3619 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3621 /* XPM support functions for NS where libxpm is not available.
3622 Only XPM version 3 (without any extensions) is supported. */
3624 static int xpm_scan (const unsigned char **, const unsigned char *,
3625 const unsigned char **, int *);
3626 static Lisp_Object xpm_make_color_table_v
3627 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3628 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3629 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3631 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3632 const unsigned char *, int);
3633 static Lisp_Object xpm_make_color_table_h
3634 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3635 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3636 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3638 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3639 const unsigned char *, int);
3640 static int xpm_str_to_color_key (const char *);
3641 static int xpm_load_image (struct frame
*, struct image
*,
3642 const unsigned char *, const unsigned char *);
3644 /* Tokens returned from xpm_scan. */
3653 /* Scan an XPM data and return a character (< 256) or a token defined
3654 by enum xpm_token above. *S and END are the start (inclusive) and
3655 the end (exclusive) addresses of the data, respectively. Advance
3656 *S while scanning. If token is either XPM_TK_IDENT or
3657 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3658 length of the corresponding token, respectively. */
3661 xpm_scan (const unsigned char **s
,
3662 const unsigned char *end
,
3663 const unsigned char **beg
,
3670 /* Skip white-space. */
3671 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3674 /* gnus-pointer.xpm uses '-' in its identifier.
3675 sb-dir-plus.xpm uses '+' in its identifier. */
3676 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3680 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3683 return XPM_TK_IDENT
;
3688 while (*s
< end
&& **s
!= '"')
3693 return XPM_TK_STRING
;
3697 if (*s
< end
&& **s
== '*')
3699 /* C-style comment. */
3703 while (*s
< end
&& *(*s
)++ != '*')
3706 while (*s
< end
&& **s
!= '/');
3720 /* Functions for color table lookup in XPM data. A key is a string
3721 specifying the color of each pixel in XPM data. A value is either
3722 an integer that specifies a pixel color, Qt that specifies
3723 transparency, or Qnil for the unspecified color. If the length of
3724 the key string is one, a vector is used as a table. Otherwise, a
3725 hash table is used. */
3728 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3729 const unsigned char *,
3732 Lisp_Object (**get_func
) (Lisp_Object
,
3733 const unsigned char *,
3736 *put_func
= xpm_put_color_table_v
;
3737 *get_func
= xpm_get_color_table_v
;
3738 return Fmake_vector (make_number (256), Qnil
);
3742 xpm_put_color_table_v (Lisp_Object color_table
,
3743 const unsigned char *chars_start
,
3747 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3751 xpm_get_color_table_v (Lisp_Object color_table
,
3752 const unsigned char *chars_start
,
3755 return XVECTOR (color_table
)->contents
[*chars_start
];
3759 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3760 const unsigned char *,
3763 Lisp_Object (**get_func
) (Lisp_Object
,
3764 const unsigned char *,
3767 *put_func
= xpm_put_color_table_h
;
3768 *get_func
= xpm_get_color_table_h
;
3769 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3770 make_float (DEFAULT_REHASH_SIZE
),
3771 make_float (DEFAULT_REHASH_THRESHOLD
),
3776 xpm_put_color_table_h (Lisp_Object color_table
,
3777 const unsigned char *chars_start
,
3781 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3783 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3785 hash_lookup (table
, chars
, &hash_code
);
3786 hash_put (table
, chars
, color
, hash_code
);
3790 xpm_get_color_table_h (Lisp_Object color_table
,
3791 const unsigned char *chars_start
,
3794 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3795 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3798 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3801 enum xpm_color_key
{
3809 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3812 xpm_str_to_color_key (const char *s
)
3817 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3819 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3825 xpm_load_image (struct frame
*f
,
3827 const unsigned char *contents
,
3828 const unsigned char *end
)
3830 const unsigned char *s
= contents
, *beg
, *str
;
3831 unsigned char buffer
[BUFSIZ
];
3832 int width
, height
, x
, y
;
3833 int num_colors
, chars_per_pixel
;
3835 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3836 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3837 Lisp_Object frame
, color_symbols
, color_table
;
3838 int best_key
, have_mask
= 0;
3839 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3842 LA1 = xpm_scan (&s, end, &beg, &len)
3844 #define expect(TOKEN) \
3845 if (LA1 != (TOKEN)) \
3850 #define expect_ident(IDENT) \
3851 if (LA1 == XPM_TK_IDENT \
3852 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3857 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3861 expect_ident ("static");
3862 expect_ident ("char");
3864 expect (XPM_TK_IDENT
);
3869 expect (XPM_TK_STRING
);
3872 memcpy (buffer
, beg
, len
);
3874 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3875 &num_colors
, &chars_per_pixel
) != 4
3876 || width
<= 0 || height
<= 0
3877 || num_colors
<= 0 || chars_per_pixel
<= 0)
3880 if (!check_image_size (f
, width
, height
))
3882 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3888 XSETFRAME (frame
, f
);
3889 if (!NILP (Fxw_display_color_p (frame
)))
3890 best_key
= XPM_COLOR_KEY_C
;
3891 else if (!NILP (Fx_display_grayscale_p (frame
)))
3892 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3893 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3895 best_key
= XPM_COLOR_KEY_M
;
3897 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3898 if (chars_per_pixel
== 1)
3899 color_table
= xpm_make_color_table_v (&put_color_table
,
3902 color_table
= xpm_make_color_table_h (&put_color_table
,
3905 while (num_colors
-- > 0)
3907 unsigned char *color
, *max_color
;
3908 int key
, next_key
, max_key
= 0;
3909 Lisp_Object symbol_color
= Qnil
, color_val
;
3912 expect (XPM_TK_STRING
);
3913 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3915 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3916 buffer
[len
- chars_per_pixel
] = '\0';
3918 str
= strtok (buffer
, " \t");
3921 key
= xpm_str_to_color_key (str
);
3926 color
= strtok (NULL
, " \t");
3930 while ((str
= strtok (NULL
, " \t")) != NULL
)
3932 next_key
= xpm_str_to_color_key (str
);
3935 color
[strlen (color
)] = ' ';
3938 if (key
== XPM_COLOR_KEY_S
)
3940 if (NILP (symbol_color
))
3941 symbol_color
= build_string (color
);
3943 else if (max_key
< key
&& key
<= best_key
)
3953 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3955 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3957 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3959 if (xstrcasecmp (SDATA (XCDR (specified_color
)), "None") == 0)
3961 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3963 color_val
= make_number (cdef
.pixel
);
3966 if (NILP (color_val
) && max_key
> 0)
3968 if (xstrcasecmp (max_color
, "None") == 0)
3970 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3971 color_val
= make_number (cdef
.pixel
);
3973 if (!NILP (color_val
))
3974 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3979 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3980 &ximg
, &img
->pixmap
)
3982 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3983 &mask_img
, &img
->mask
)
3987 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3991 for (y
= 0; y
< height
; y
++)
3993 expect (XPM_TK_STRING
);
3995 if (len
< width
* chars_per_pixel
)
3997 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3999 Lisp_Object color_val
=
4000 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4002 XPutPixel (ximg
, x
, y
,
4003 (INTEGERP (color_val
) ? XINT (color_val
)
4004 : FRAME_FOREGROUND_PIXEL (f
)));
4006 XPutPixel (mask_img
, x
, y
,
4007 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4008 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4010 if (EQ (color_val
, Qt
))
4011 ns_set_alpha (ximg
, x
, y
, 0);
4019 img
->height
= height
;
4021 /* Maybe fill in the background field while we have ximg handy. */
4022 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4023 IMAGE_BACKGROUND (img
, f
, ximg
);
4025 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4026 x_destroy_x_image (ximg
);
4030 /* Fill in the background_transparent field while we have the
4032 image_background_transparent (img
, f
, mask_img
);
4034 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4035 x_destroy_x_image (mask_img
);
4039 x_destroy_x_image (mask_img
);
4040 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4041 img
->mask
= NO_PIXMAP
;
4047 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4049 x_destroy_x_image (ximg
);
4050 x_destroy_x_image (mask_img
);
4051 x_clear_image (f
, img
);
4060 xpm_load (struct frame
*f
,
4064 Lisp_Object file_name
;
4066 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4067 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4068 if (STRINGP (file_name
))
4071 unsigned char *contents
;
4073 struct gcpro gcpro1
;
4075 file
= x_find_image_file (file_name
);
4077 if (!STRINGP (file
))
4079 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4084 contents
= slurp_file (SDATA (file
), &size
);
4085 if (contents
== NULL
)
4087 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4092 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4100 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4101 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4102 SDATA (data
) + SBYTES (data
));
4108 #endif /* HAVE_NS && !HAVE_XPM */
4112 /***********************************************************************
4114 ***********************************************************************/
4116 #ifdef COLOR_TABLE_SUPPORT
4118 /* An entry in the color table mapping an RGB color to a pixel color. */
4123 unsigned long pixel
;
4125 /* Next in color table collision list. */
4126 struct ct_color
*next
;
4129 /* The bucket vector size to use. Must be prime. */
4133 /* Value is a hash of the RGB color given by R, G, and B. */
4135 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4137 /* The color hash table. */
4139 struct ct_color
**ct_table
;
4141 /* Number of entries in the color table. */
4143 int ct_colors_allocated
;
4145 /* Initialize the color table. */
4148 init_color_table (void)
4150 int size
= CT_SIZE
* sizeof (*ct_table
);
4151 ct_table
= (struct ct_color
**) xmalloc (size
);
4152 memset (ct_table
, 0, size
);
4153 ct_colors_allocated
= 0;
4157 /* Free memory associated with the color table. */
4160 free_color_table (void)
4163 struct ct_color
*p
, *next
;
4165 for (i
= 0; i
< CT_SIZE
; ++i
)
4166 for (p
= ct_table
[i
]; p
; p
= next
)
4177 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4178 entry for that color already is in the color table, return the
4179 pixel color of that entry. Otherwise, allocate a new color for R,
4180 G, B, and make an entry in the color table. */
4182 static unsigned long
4183 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4185 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4186 int i
= hash
% CT_SIZE
;
4188 Display_Info
*dpyinfo
;
4190 /* Handle TrueColor visuals specially, which improves performance by
4191 two orders of magnitude. Freeing colors on TrueColor visuals is
4192 a nop, and pixel colors specify RGB values directly. See also
4193 the Xlib spec, chapter 3.1. */
4194 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4195 if (dpyinfo
->red_bits
> 0)
4197 unsigned long pr
, pg
, pb
;
4199 /* Apply gamma-correction like normal color allocation does. */
4203 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4204 gamma_correct (f
, &color
);
4205 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4208 /* Scale down RGB values to the visual's bits per RGB, and shift
4209 them to the right position in the pixel color. Note that the
4210 original RGB values are 16-bit values, as usual in X. */
4211 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4212 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4213 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4215 /* Assemble the pixel color. */
4216 return pr
| pg
| pb
;
4219 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4220 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4226 #ifdef HAVE_X_WINDOWS
4235 cmap
= FRAME_X_COLORMAP (f
);
4236 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4239 ++ct_colors_allocated
;
4240 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4244 p
->pixel
= color
.pixel
;
4245 p
->next
= ct_table
[i
];
4249 return FRAME_FOREGROUND_PIXEL (f
);
4254 color
= PALETTERGB (r
, g
, b
);
4256 color
= RGB_TO_ULONG (r
, g
, b
);
4257 #endif /* HAVE_NTGUI */
4258 ++ct_colors_allocated
;
4259 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4264 p
->next
= ct_table
[i
];
4266 #endif /* HAVE_X_WINDOWS */
4274 /* Look up pixel color PIXEL which is used on frame F in the color
4275 table. If not already present, allocate it. Value is PIXEL. */
4277 static unsigned long
4278 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4280 int i
= pixel
% CT_SIZE
;
4283 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4284 if (p
->pixel
== pixel
)
4293 #ifdef HAVE_X_WINDOWS
4294 cmap
= FRAME_X_COLORMAP (f
);
4295 color
.pixel
= pixel
;
4296 x_query_color (f
, &color
);
4297 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4300 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4301 color
.pixel
= pixel
;
4302 XQueryColor (NULL
, cmap
, &color
);
4303 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4305 #endif /* HAVE_X_WINDOWS */
4309 ++ct_colors_allocated
;
4311 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4316 p
->next
= ct_table
[i
];
4320 return FRAME_FOREGROUND_PIXEL (f
);
4326 /* Value is a vector of all pixel colors contained in the color table,
4327 allocated via xmalloc. Set *N to the number of colors. */
4329 static unsigned long *
4330 colors_in_color_table (int *n
)
4334 unsigned long *colors
;
4336 if (ct_colors_allocated
== 0)
4343 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4345 *n
= ct_colors_allocated
;
4347 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4348 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4349 colors
[j
++] = p
->pixel
;
4355 #else /* COLOR_TABLE_SUPPORT */
4357 static unsigned long
4358 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4360 unsigned long pixel
;
4363 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4364 #endif /* HAVE_NTGUI */
4367 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4368 #endif /* HAVE_NS */
4373 init_color_table (void)
4376 #endif /* COLOR_TABLE_SUPPORT */
4379 /***********************************************************************
4381 ***********************************************************************/
4383 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4384 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4385 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4388 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4389 #endif /* HAVE_NTGUI */
4391 /* Non-zero means draw a cross on images having `:conversion
4394 int cross_disabled_images
;
4396 /* Edge detection matrices for different edge-detection
4399 static int emboss_matrix
[9] = {
4401 2, -1, 0, /* y - 1 */
4403 0, 1, -2 /* y + 1 */
4406 static int laplace_matrix
[9] = {
4408 1, 0, 0, /* y - 1 */
4410 0, 0, -1 /* y + 1 */
4413 /* Value is the intensity of the color whose red/green/blue values
4416 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4419 /* On frame F, return an array of XColor structures describing image
4420 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4421 non-zero means also fill the red/green/blue members of the XColor
4422 structures. Value is a pointer to the array of XColors structures,
4423 allocated with xmalloc; it must be freed by the caller. */
4426 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4430 XImagePtr_or_DC ximg
;
4434 #endif /* HAVE_NTGUI */
4436 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4439 /* Get the X image IMG->pixmap. */
4440 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4441 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4443 /* Load the image into a memory device context. */
4444 hdc
= get_frame_dc (f
);
4445 ximg
= CreateCompatibleDC (hdc
);
4446 release_frame_dc (f
, hdc
);
4447 prev
= SelectObject (ximg
, img
->pixmap
);
4448 #endif /* HAVE_NTGUI */
4450 /* Fill the `pixel' members of the XColor array. I wished there
4451 were an easy and portable way to circumvent XGetPixel. */
4453 for (y
= 0; y
< img
->height
; ++y
)
4457 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4458 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4459 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4461 x_query_colors (f
, row
, img
->width
);
4465 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4467 /* W32_TODO: palette support needed here? */
4468 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4471 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4472 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4473 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4476 #endif /* HAVE_X_WINDOWS */
4479 Destroy_Image (ximg
, prev
);
4486 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4487 created with CreateDIBSection, with the pointer to the bit values
4488 stored in ximg->data. */
4491 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4493 int width
= ximg
->info
.bmiHeader
.biWidth
;
4494 int height
= ximg
->info
.bmiHeader
.biHeight
;
4495 unsigned char * pixel
;
4497 /* True color images. */
4498 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4500 int rowbytes
= width
* 3;
4501 /* Ensure scanlines are aligned on 4 byte boundaries. */
4503 rowbytes
+= 4 - (rowbytes
% 4);
4505 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4506 /* Windows bitmaps are in BGR order. */
4507 *pixel
= GetBValue (color
);
4508 *(pixel
+ 1) = GetGValue (color
);
4509 *(pixel
+ 2) = GetRValue (color
);
4511 /* Monochrome images. */
4512 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4514 int rowbytes
= width
/ 8;
4515 /* Ensure scanlines are aligned on 4 byte boundaries. */
4517 rowbytes
+= 4 - (rowbytes
% 4);
4518 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4519 /* Filter out palette info. */
4520 if (color
& 0x00ffffff)
4521 *pixel
= *pixel
| (1 << x
% 8);
4523 *pixel
= *pixel
& ~(1 << x
% 8);
4526 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4529 #endif /* HAVE_NTGUI */
4531 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4532 RGB members are set. F is the frame on which this all happens.
4533 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4536 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4539 XImagePtr oimg
= NULL
;
4543 init_color_table ();
4545 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4548 for (y
= 0; y
< img
->height
; ++y
)
4549 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4551 unsigned long pixel
;
4552 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4553 XPutPixel (oimg
, x
, y
, pixel
);
4557 x_clear_image_1 (f
, img
, 1, 0, 1);
4559 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4560 x_destroy_x_image (oimg
);
4561 img
->pixmap
= pixmap
;
4562 #ifdef COLOR_TABLE_SUPPORT
4563 img
->colors
= colors_in_color_table (&img
->ncolors
);
4564 free_color_table ();
4565 #endif /* COLOR_TABLE_SUPPORT */
4569 /* On frame F, perform edge-detection on image IMG.
4571 MATRIX is a nine-element array specifying the transformation
4572 matrix. See emboss_matrix for an example.
4574 COLOR_ADJUST is a color adjustment added to each pixel of the
4578 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4580 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4584 for (i
= sum
= 0; i
< 9; ++i
)
4585 sum
+= eabs (matrix
[i
]);
4587 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4589 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4591 for (y
= 0; y
< img
->height
; ++y
)
4593 p
= COLOR (new, 0, y
);
4594 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4595 p
= COLOR (new, img
->width
- 1, y
);
4596 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4599 for (x
= 1; x
< img
->width
- 1; ++x
)
4601 p
= COLOR (new, x
, 0);
4602 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4603 p
= COLOR (new, x
, img
->height
- 1);
4604 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4607 for (y
= 1; y
< img
->height
- 1; ++y
)
4609 p
= COLOR (new, 1, y
);
4611 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4613 int r
, g
, b
, y1
, x1
;
4616 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
4617 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
4620 XColor
*t
= COLOR (colors
, x1
, y1
);
4621 r
+= matrix
[i
] * t
->red
;
4622 g
+= matrix
[i
] * t
->green
;
4623 b
+= matrix
[i
] * t
->blue
;
4626 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4627 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4628 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4629 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4634 x_from_xcolors (f
, img
, new);
4640 /* Perform the pre-defined `emboss' edge-detection on image IMG
4644 x_emboss (struct frame
*f
, struct image
*img
)
4646 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4650 /* Transform image IMG which is used on frame F with a Laplace
4651 edge-detection algorithm. The result is an image that can be used
4652 to draw disabled buttons, for example. */
4655 x_laplace (struct frame
*f
, struct image
*img
)
4657 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4661 /* Perform edge-detection on image IMG on frame F, with specified
4662 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4664 MATRIX must be either
4666 - a list of at least 9 numbers in row-major form
4667 - a vector of at least 9 numbers
4669 COLOR_ADJUST nil means use a default; otherwise it must be a
4673 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4674 Lisp_Object color_adjust
)
4682 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4683 ++i
, matrix
= XCDR (matrix
))
4684 trans
[i
] = XFLOATINT (XCAR (matrix
));
4686 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4688 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4689 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4692 if (NILP (color_adjust
))
4693 color_adjust
= make_number (0xffff / 2);
4695 if (i
== 9 && NUMBERP (color_adjust
))
4696 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
4700 /* Transform image IMG on frame F so that it looks disabled. */
4703 x_disable_image (struct frame
*f
, struct image
*img
)
4705 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4707 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4709 int n_planes
= dpyinfo
->n_planes
;
4710 #endif /* HAVE_NTGUI */
4714 /* Color (or grayscale). Convert to gray, and equalize. Just
4715 drawing such images with a stipple can look very odd, so
4716 we're using this method instead. */
4717 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4719 const int h
= 15000;
4720 const int l
= 30000;
4722 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4726 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4727 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4728 p
->red
= p
->green
= p
->blue
= i2
;
4731 x_from_xcolors (f
, img
, colors
);
4734 /* Draw a cross over the disabled image, if we must or if we
4736 if (n_planes
< 2 || cross_disabled_images
)
4739 Display
*dpy
= FRAME_X_DISPLAY (f
);
4742 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4744 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4746 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4747 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4748 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4749 img
->width
- 1, img
->height
- 1);
4750 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4756 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4757 XSetForeground (dpy
, gc
, MaskForeground (f
));
4758 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4759 img
->width
- 1, img
->height
- 1);
4760 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4764 #endif /* !HAVE_NS */
4769 hdc
= get_frame_dc (f
);
4770 bmpdc
= CreateCompatibleDC (hdc
);
4771 release_frame_dc (f
, hdc
);
4773 prev
= SelectObject (bmpdc
, img
->pixmap
);
4775 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4776 MoveToEx (bmpdc
, 0, 0, NULL
);
4777 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4778 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4779 LineTo (bmpdc
, img
->width
- 1, 0);
4783 SelectObject (bmpdc
, img
->mask
);
4784 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4785 MoveToEx (bmpdc
, 0, 0, NULL
);
4786 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4787 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4788 LineTo (bmpdc
, img
->width
- 1, 0);
4790 SelectObject (bmpdc
, prev
);
4792 #endif /* HAVE_NTGUI */
4797 /* Build a mask for image IMG which is used on frame F. FILE is the
4798 name of an image file, for error messages. HOW determines how to
4799 determine the background color of IMG. If it is a list '(R G B)',
4800 with R, G, and B being integers >= 0, take that as the color of the
4801 background. Otherwise, determine the background color of IMG
4802 heuristically. Value is non-zero if successful. */
4805 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4807 XImagePtr_or_DC ximg
;
4815 #endif /* HAVE_NTGUI */
4816 int x
, y
, rc
, use_img_background
;
4817 unsigned long bg
= 0;
4821 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4822 img
->mask
= NO_PIXMAP
;
4823 img
->background_transparent_valid
= 0;
4828 /* Create an image and pixmap serving as mask. */
4829 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4830 &mask_img
, &img
->mask
);
4833 #endif /* !HAVE_NS */
4835 /* Get the X image of IMG->pixmap. */
4836 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4837 img
->width
, img
->height
,
4840 /* Create the bit array serving as mask. */
4841 row_width
= (img
->width
+ 7) / 8;
4842 mask_img
= xmalloc (row_width
* img
->height
);
4843 memset (mask_img
, 0, row_width
* img
->height
);
4845 /* Create a memory device context for IMG->pixmap. */
4846 frame_dc
= get_frame_dc (f
);
4847 ximg
= CreateCompatibleDC (frame_dc
);
4848 release_frame_dc (f
, frame_dc
);
4849 prev
= SelectObject (ximg
, img
->pixmap
);
4850 #endif /* HAVE_NTGUI */
4852 /* Determine the background color of ximg. If HOW is `(R G B)'
4853 take that as color. Otherwise, use the image's background color. */
4854 use_img_background
= 1;
4860 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4862 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4866 if (i
== 3 && NILP (how
))
4868 char color_name
[30];
4869 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4872 0x00ffffff & /* Filter out palette info. */
4873 #endif /* HAVE_NTGUI */
4874 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4875 use_img_background
= 0;
4879 if (use_img_background
)
4880 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4882 /* Set all bits in mask_img to 1 whose color in ximg is different
4883 from the background color bg. */
4885 for (y
= 0; y
< img
->height
; ++y
)
4886 for (x
= 0; x
< img
->width
; ++x
)
4888 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4889 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4891 if (XGetPixel (ximg
, x
, y
) == bg
)
4892 ns_set_alpha (ximg
, x
, y
, 0);
4893 #endif /* HAVE_NS */
4895 /* Fill in the background_transparent field while we have the mask handy. */
4896 image_background_transparent (img
, f
, mask_img
);
4898 /* Put mask_img into img->mask. */
4899 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4900 x_destroy_x_image (mask_img
);
4901 #endif /* !HAVE_NS */
4903 for (y
= 0; y
< img
->height
; ++y
)
4904 for (x
= 0; x
< img
->width
; ++x
)
4906 COLORREF p
= GetPixel (ximg
, x
, y
);
4908 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4911 /* Create the mask image. */
4912 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4914 /* Fill in the background_transparent field while we have the mask handy. */
4915 SelectObject (ximg
, img
->mask
);
4916 image_background_transparent (img
, f
, ximg
);
4918 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4920 #endif /* HAVE_NTGUI */
4922 Destroy_Image (ximg
, prev
);
4928 /***********************************************************************
4929 PBM (mono, gray, color)
4930 ***********************************************************************/
4932 static int pbm_image_p (Lisp_Object object
);
4933 static int pbm_load (struct frame
*f
, struct image
*img
);
4934 static int pbm_scan_number (unsigned char **, unsigned char *);
4936 /* The symbol `pbm' identifying images of this type. */
4940 /* Indices of image specification fields in gs_format, below. */
4942 enum pbm_keyword_index
4958 /* Vector of image_keyword structures describing the format
4959 of valid user-defined image specifications. */
4961 static const struct image_keyword pbm_format
[PBM_LAST
] =
4963 {":type", IMAGE_SYMBOL_VALUE
, 1},
4964 {":file", IMAGE_STRING_VALUE
, 0},
4965 {":data", IMAGE_STRING_VALUE
, 0},
4966 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4967 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4968 {":relief", IMAGE_INTEGER_VALUE
, 0},
4969 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4970 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4971 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4972 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4973 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4976 /* Structure describing the image type `pbm'. */
4978 static struct image_type pbm_type
=
4988 /* Return non-zero if OBJECT is a valid PBM image specification. */
4991 pbm_image_p (Lisp_Object object
)
4993 struct image_keyword fmt
[PBM_LAST
];
4995 memcpy (fmt
, pbm_format
, sizeof fmt
);
4997 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5000 /* Must specify either :data or :file. */
5001 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5005 /* Scan a decimal number from *S and return it. Advance *S while
5006 reading the number. END is the end of the string. Value is -1 at
5010 pbm_scan_number (unsigned char **s
, unsigned char *end
)
5012 int c
= 0, val
= -1;
5016 /* Skip white-space. */
5017 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5022 /* Skip comment to end of line. */
5023 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5026 else if (isdigit (c
))
5028 /* Read decimal number. */
5030 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5031 val
= 10 * val
+ c
- '0';
5043 #if 0 /* Unused. ++kfs */
5045 /* Read FILE into memory. Value is a pointer to a buffer allocated
5046 with xmalloc holding FILE's contents. Value is null if an error
5047 occurred. *SIZE is set to the size of the file. */
5050 pbm_read_file (file
, size
)
5058 if (stat (SDATA (file
), &st
) == 0
5059 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5060 && (buf
= (char *) xmalloc (st
.st_size
),
5061 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5080 #endif /* HAVE_NTGUI */
5082 /* Load PBM image IMG for use on frame F. */
5085 pbm_load (struct frame
*f
, struct image
*img
)
5088 int width
, height
, max_color_idx
= 0;
5090 Lisp_Object file
, specified_file
;
5091 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5092 struct gcpro gcpro1
;
5093 unsigned char *contents
= NULL
;
5094 unsigned char *end
, *p
;
5097 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5101 if (STRINGP (specified_file
))
5103 file
= x_find_image_file (specified_file
);
5104 if (!STRINGP (file
))
5106 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5111 contents
= slurp_file (SDATA (file
), &size
);
5112 if (contents
== NULL
)
5114 image_error ("Error reading `%s'", file
, Qnil
);
5120 end
= contents
+ size
;
5125 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5127 end
= p
+ SBYTES (data
);
5130 /* Check magic number. */
5131 if (end
- p
< 2 || *p
++ != 'P')
5133 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5143 raw_p
= 0, type
= PBM_MONO
;
5147 raw_p
= 0, type
= PBM_GRAY
;
5151 raw_p
= 0, type
= PBM_COLOR
;
5155 raw_p
= 1, type
= PBM_MONO
;
5159 raw_p
= 1, type
= PBM_GRAY
;
5163 raw_p
= 1, type
= PBM_COLOR
;
5167 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5171 /* Read width, height, maximum color-component. Characters
5172 starting with `#' up to the end of a line are ignored. */
5173 width
= pbm_scan_number (&p
, end
);
5174 height
= pbm_scan_number (&p
, end
);
5176 if (type
!= PBM_MONO
)
5178 max_color_idx
= pbm_scan_number (&p
, end
);
5179 if (max_color_idx
> 65535 || max_color_idx
< 0)
5181 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5186 if (!check_image_size (f
, width
, height
))
5188 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5192 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5193 &ximg
, &img
->pixmap
))
5196 /* Initialize the color hash table. */
5197 init_color_table ();
5199 if (type
== PBM_MONO
)
5202 struct image_keyword fmt
[PBM_LAST
];
5203 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5204 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5206 /* Parse the image specification. */
5207 memcpy (fmt
, pbm_format
, sizeof fmt
);
5208 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5210 /* Get foreground and background colors, maybe allocate colors. */
5211 if (fmt
[PBM_FOREGROUND
].count
5212 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5213 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5214 if (fmt
[PBM_BACKGROUND
].count
5215 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5217 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5218 img
->background
= bg
;
5219 img
->background_valid
= 1;
5222 for (y
= 0; y
< height
; ++y
)
5223 for (x
= 0; x
< width
; ++x
)
5231 x_destroy_x_image (ximg
);
5232 x_clear_image (f
, img
);
5233 image_error ("Invalid image size in image `%s'",
5243 g
= pbm_scan_number (&p
, end
);
5245 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5250 int expected_size
= height
* width
;
5251 if (max_color_idx
> 255)
5253 if (type
== PBM_COLOR
)
5256 if (raw_p
&& p
+ expected_size
> end
)
5258 x_destroy_x_image (ximg
);
5259 x_clear_image (f
, img
);
5260 image_error ("Invalid image size in image `%s'",
5265 for (y
= 0; y
< height
; ++y
)
5266 for (x
= 0; x
< width
; ++x
)
5270 if (type
== PBM_GRAY
&& raw_p
)
5273 if (max_color_idx
> 255)
5274 r
= g
= b
= r
* 256 + *p
++;
5276 else if (type
== PBM_GRAY
)
5277 r
= g
= b
= pbm_scan_number (&p
, end
);
5281 if (max_color_idx
> 255)
5284 if (max_color_idx
> 255)
5287 if (max_color_idx
> 255)
5292 r
= pbm_scan_number (&p
, end
);
5293 g
= pbm_scan_number (&p
, end
);
5294 b
= pbm_scan_number (&p
, end
);
5297 if (r
< 0 || g
< 0 || b
< 0)
5299 x_destroy_x_image (ximg
);
5300 image_error ("Invalid pixel value in image `%s'",
5305 /* RGB values are now in the range 0..max_color_idx.
5306 Scale this to the range 0..0xffff supported by X. */
5307 r
= (double) r
* 65535 / max_color_idx
;
5308 g
= (double) g
* 65535 / max_color_idx
;
5309 b
= (double) b
* 65535 / max_color_idx
;
5310 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5314 #ifdef COLOR_TABLE_SUPPORT
5315 /* Store in IMG->colors the colors allocated for the image, and
5316 free the color table. */
5317 img
->colors
= colors_in_color_table (&img
->ncolors
);
5318 free_color_table ();
5319 #endif /* COLOR_TABLE_SUPPORT */
5322 img
->height
= height
;
5324 /* Maybe fill in the background field while we have ximg handy. */
5326 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5327 /* Casting avoids a GCC warning. */
5328 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5330 /* Put the image into a pixmap. */
5331 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5332 x_destroy_x_image (ximg
);
5334 /* X and W32 versions did it here, MAC version above. ++kfs
5336 img->height = height; */
5344 /***********************************************************************
5346 ***********************************************************************/
5348 #if defined (HAVE_PNG) || defined (HAVE_NS)
5350 /* Function prototypes. */
5352 static int png_image_p (Lisp_Object object
);
5353 static int png_load (struct frame
*f
, struct image
*img
);
5355 /* The symbol `png' identifying images of this type. */
5359 /* Indices of image specification fields in png_format, below. */
5361 enum png_keyword_index
5376 /* Vector of image_keyword structures describing the format
5377 of valid user-defined image specifications. */
5379 static const struct image_keyword png_format
[PNG_LAST
] =
5381 {":type", IMAGE_SYMBOL_VALUE
, 1},
5382 {":data", IMAGE_STRING_VALUE
, 0},
5383 {":file", IMAGE_STRING_VALUE
, 0},
5384 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5385 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5386 {":relief", IMAGE_INTEGER_VALUE
, 0},
5387 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5388 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5389 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5390 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5393 /* Structure describing the image type `png'. */
5395 static struct image_type png_type
=
5404 /* Return non-zero if OBJECT is a valid PNG image specification. */
5407 png_image_p (Lisp_Object object
)
5409 struct image_keyword fmt
[PNG_LAST
];
5410 memcpy (fmt
, png_format
, sizeof fmt
);
5412 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5415 /* Must specify either the :data or :file keyword. */
5416 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5419 #endif /* HAVE_PNG || HAVE_NS */
5425 /* PNG library details. */
5427 DEF_IMGLIB_FN (png_get_io_ptr
);
5428 DEF_IMGLIB_FN (png_sig_cmp
);
5429 DEF_IMGLIB_FN (png_create_read_struct
);
5430 DEF_IMGLIB_FN (png_create_info_struct
);
5431 DEF_IMGLIB_FN (png_destroy_read_struct
);
5432 DEF_IMGLIB_FN (png_set_read_fn
);
5433 DEF_IMGLIB_FN (png_set_sig_bytes
);
5434 DEF_IMGLIB_FN (png_read_info
);
5435 DEF_IMGLIB_FN (png_get_IHDR
);
5436 DEF_IMGLIB_FN (png_get_valid
);
5437 DEF_IMGLIB_FN (png_set_strip_16
);
5438 DEF_IMGLIB_FN (png_set_expand
);
5439 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5440 DEF_IMGLIB_FN (png_set_background
);
5441 DEF_IMGLIB_FN (png_get_bKGD
);
5442 DEF_IMGLIB_FN (png_read_update_info
);
5443 DEF_IMGLIB_FN (png_get_channels
);
5444 DEF_IMGLIB_FN (png_get_rowbytes
);
5445 DEF_IMGLIB_FN (png_read_image
);
5446 DEF_IMGLIB_FN (png_read_end
);
5447 DEF_IMGLIB_FN (png_error
);
5450 init_png_functions (Lisp_Object libraries
)
5454 /* Try loading libpng under probable names. */
5455 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5458 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5459 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5460 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5461 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5462 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5463 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5464 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5465 LOAD_IMGLIB_FN (library
, png_read_info
);
5466 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5467 LOAD_IMGLIB_FN (library
, png_get_valid
);
5468 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5469 LOAD_IMGLIB_FN (library
, png_set_expand
);
5470 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5471 LOAD_IMGLIB_FN (library
, png_set_background
);
5472 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5473 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5474 LOAD_IMGLIB_FN (library
, png_get_channels
);
5475 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5476 LOAD_IMGLIB_FN (library
, png_read_image
);
5477 LOAD_IMGLIB_FN (library
, png_read_end
);
5478 LOAD_IMGLIB_FN (library
, png_error
);
5483 #define fn_png_get_io_ptr png_get_io_ptr
5484 #define fn_png_sig_cmp png_sig_cmp
5485 #define fn_png_create_read_struct png_create_read_struct
5486 #define fn_png_create_info_struct png_create_info_struct
5487 #define fn_png_destroy_read_struct png_destroy_read_struct
5488 #define fn_png_set_read_fn png_set_read_fn
5489 #define fn_png_set_sig_bytes png_set_sig_bytes
5490 #define fn_png_read_info png_read_info
5491 #define fn_png_get_IHDR png_get_IHDR
5492 #define fn_png_get_valid png_get_valid
5493 #define fn_png_set_strip_16 png_set_strip_16
5494 #define fn_png_set_expand png_set_expand
5495 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5496 #define fn_png_set_background png_set_background
5497 #define fn_png_get_bKGD png_get_bKGD
5498 #define fn_png_read_update_info png_read_update_info
5499 #define fn_png_get_channels png_get_channels
5500 #define fn_png_get_rowbytes png_get_rowbytes
5501 #define fn_png_read_image png_read_image
5502 #define fn_png_read_end png_read_end
5503 #define fn_png_error png_error
5505 #endif /* HAVE_NTGUI */
5507 /* Error and warning handlers installed when the PNG library
5511 my_png_error (png_struct
*png_ptr
, const char *msg
)
5513 xassert (png_ptr
!= NULL
);
5514 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5515 longjmp (png_ptr
->jmpbuf
, 1);
5520 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5522 xassert (png_ptr
!= NULL
);
5523 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5526 /* Memory source for PNG decoding. */
5528 struct png_memory_storage
5530 unsigned char *bytes
; /* The data */
5531 size_t len
; /* How big is it? */
5532 int index
; /* Where are we? */
5536 /* Function set as reader function when reading PNG image from memory.
5537 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5538 bytes from the input to DATA. */
5541 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5543 struct png_memory_storage
*tbr
5544 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5546 if (length
> tbr
->len
- tbr
->index
)
5547 fn_png_error (png_ptr
, "Read error");
5549 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5550 tbr
->index
= tbr
->index
+ length
;
5554 /* Function set as reader function when reading PNG image from a file.
5555 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5556 bytes from the input to DATA. */
5559 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5561 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5563 if (fread (data
, 1, length
, fp
) < length
)
5564 fn_png_error (png_ptr
, "Read error");
5568 /* Load PNG image IMG for use on frame F. Value is non-zero if
5572 png_load (struct frame
*f
, struct image
*img
)
5574 Lisp_Object file
, specified_file
;
5575 Lisp_Object specified_data
;
5577 XImagePtr ximg
, mask_img
= NULL
;
5578 struct gcpro gcpro1
;
5579 png_struct
*png_ptr
= NULL
;
5580 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5581 FILE *volatile fp
= NULL
;
5583 png_byte
* volatile pixels
= NULL
;
5584 png_byte
** volatile rows
= NULL
;
5585 png_uint_32 width
, height
;
5586 int bit_depth
, color_type
, interlace_type
;
5588 png_uint_32 row_bytes
;
5590 struct png_memory_storage tbr
; /* Data to be read */
5592 /* Find out what file to load. */
5593 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5594 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5598 if (NILP (specified_data
))
5600 file
= x_find_image_file (specified_file
);
5601 if (!STRINGP (file
))
5603 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5608 /* Open the image file. */
5609 fp
= fopen (SDATA (file
), "rb");
5612 image_error ("Cannot open image file `%s'", file
, Qnil
);
5617 /* Check PNG signature. */
5618 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5619 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5621 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5629 /* Read from memory. */
5630 tbr
.bytes
= SDATA (specified_data
);
5631 tbr
.len
= SBYTES (specified_data
);
5634 /* Check PNG signature. */
5635 if (tbr
.len
< sizeof sig
5636 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5638 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5643 /* Need to skip past the signature. */
5644 tbr
.bytes
+= sizeof (sig
);
5647 /* Initialize read and info structs for PNG lib. Casting return
5648 value avoids a GCC warning on W32. */
5649 png_ptr
= (png_structp
)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5654 if (fp
) fclose (fp
);
5659 /* Casting return value avoids a GCC warning on W32. */
5660 info_ptr
= (png_infop
)fn_png_create_info_struct (png_ptr
);
5663 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5664 if (fp
) fclose (fp
);
5669 /* Casting return value avoids a GCC warning on W32. */
5670 end_info
= (png_infop
)fn_png_create_info_struct (png_ptr
);
5673 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5674 if (fp
) fclose (fp
);
5679 /* Set error jump-back. We come back here when the PNG library
5680 detects an error. */
5681 if (setjmp (png_ptr
->jmpbuf
))
5685 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5688 if (fp
) fclose (fp
);
5693 /* Read image info. */
5694 if (!NILP (specified_data
))
5695 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5697 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5699 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5700 fn_png_read_info (png_ptr
, info_ptr
);
5701 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5702 &interlace_type
, NULL
, NULL
);
5704 if (!check_image_size (f
, width
, height
))
5706 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5709 /* If image contains simply transparency data, we prefer to
5710 construct a clipping mask. */
5711 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5716 /* This function is easier to write if we only have to handle
5717 one data format: RGB or RGBA with 8 bits per channel. Let's
5718 transform other formats into that format. */
5720 /* Strip more than 8 bits per channel. */
5721 if (bit_depth
== 16)
5722 fn_png_set_strip_16 (png_ptr
);
5724 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5726 fn_png_set_expand (png_ptr
);
5728 /* Convert grayscale images to RGB. */
5729 if (color_type
== PNG_COLOR_TYPE_GRAY
5730 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5731 fn_png_set_gray_to_rgb (png_ptr
);
5733 /* Handle alpha channel by combining the image with a background
5734 color. Do this only if a real alpha channel is supplied. For
5735 simple transparency, we prefer a clipping mask. */
5738 /* png_color_16 *image_bg; */
5739 Lisp_Object specified_bg
5740 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5741 int shift
= (bit_depth
== 16) ? 0 : 8;
5743 if (STRINGP (specified_bg
))
5744 /* The user specified `:background', use that. */
5747 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
5749 png_color_16 user_bg
;
5751 memset (&user_bg
, 0, sizeof user_bg
);
5752 user_bg
.red
= color
.red
>> shift
;
5753 user_bg
.green
= color
.green
>> shift
;
5754 user_bg
.blue
= color
.blue
>> shift
;
5756 fn_png_set_background (png_ptr
, &user_bg
,
5757 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5762 /* We use the current frame background, ignoring any default
5763 background color set by the image. */
5764 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5766 png_color_16 frame_background
;
5768 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5769 x_query_color (f
, &color
);
5771 memset (&frame_background
, 0, sizeof frame_background
);
5772 frame_background
.red
= color
.red
>> shift
;
5773 frame_background
.green
= color
.green
>> shift
;
5774 frame_background
.blue
= color
.blue
>> shift
;
5775 #endif /* HAVE_X_WINDOWS */
5777 fn_png_set_background (png_ptr
, &frame_background
,
5778 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5782 /* Update info structure. */
5783 fn_png_read_update_info (png_ptr
, info_ptr
);
5785 /* Get number of channels. Valid values are 1 for grayscale images
5786 and images with a palette, 2 for grayscale images with transparency
5787 information (alpha channel), 3 for RGB images, and 4 for RGB
5788 images with alpha channel, i.e. RGBA. If conversions above were
5789 sufficient we should only have 3 or 4 channels here. */
5790 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5791 xassert (channels
== 3 || channels
== 4);
5793 /* Number of bytes needed for one row of the image. */
5794 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5796 /* Allocate memory for the image. */
5797 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5798 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5799 for (i
= 0; i
< height
; ++i
)
5800 rows
[i
] = pixels
+ i
* row_bytes
;
5802 /* Read the entire image. */
5803 fn_png_read_image (png_ptr
, rows
);
5804 fn_png_read_end (png_ptr
, info_ptr
);
5811 /* Create the X image and pixmap. */
5812 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5816 /* Create an image and pixmap serving as mask if the PNG image
5817 contains an alpha channel. */
5820 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5821 &mask_img
, &img
->mask
))
5823 x_destroy_x_image (ximg
);
5824 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5825 img
->pixmap
= NO_PIXMAP
;
5829 /* Fill the X image and mask from PNG data. */
5830 init_color_table ();
5832 for (y
= 0; y
< height
; ++y
)
5834 png_byte
*p
= rows
[y
];
5836 for (x
= 0; x
< width
; ++x
)
5843 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5844 /* An alpha channel, aka mask channel, associates variable
5845 transparency with an image. Where other image formats
5846 support binary transparency---fully transparent or fully
5847 opaque---PNG allows up to 254 levels of partial transparency.
5848 The PNG library implements partial transparency by combining
5849 the image with a specified background color.
5851 I'm not sure how to handle this here nicely: because the
5852 background on which the image is displayed may change, for
5853 real alpha channel support, it would be necessary to create
5854 a new image for each possible background.
5856 What I'm doing now is that a mask is created if we have
5857 boolean transparency information. Otherwise I'm using
5858 the frame's background color to combine the image with. */
5863 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5869 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5870 /* Set IMG's background color from the PNG image, unless the user
5874 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5876 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5877 img
->background_valid
= 1;
5881 #ifdef COLOR_TABLE_SUPPORT
5882 /* Remember colors allocated for this image. */
5883 img
->colors
= colors_in_color_table (&img
->ncolors
);
5884 free_color_table ();
5885 #endif /* COLOR_TABLE_SUPPORT */
5888 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5893 img
->height
= height
;
5895 /* Maybe fill in the background field while we have ximg handy.
5896 Casting avoids a GCC warning. */
5897 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5899 /* Put the image into the pixmap, then free the X image and its buffer. */
5900 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5901 x_destroy_x_image (ximg
);
5903 /* Same for the mask. */
5906 /* Fill in the background_transparent field while we have the
5907 mask handy. Casting avoids a GCC warning. */
5908 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5910 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5911 x_destroy_x_image (mask_img
);
5918 #else /* HAVE_PNG */
5922 png_load (struct frame
*f
, struct image
*img
)
5924 return ns_load_image(f
, img
,
5925 image_spec_value (img
->spec
, QCfile
, NULL
),
5926 image_spec_value (img
->spec
, QCdata
, NULL
));
5928 #endif /* HAVE_NS */
5931 #endif /* !HAVE_PNG */
5935 /***********************************************************************
5937 ***********************************************************************/
5939 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5941 static int jpeg_image_p (Lisp_Object object
);
5942 static int jpeg_load (struct frame
*f
, struct image
*img
);
5944 /* The symbol `jpeg' identifying images of this type. */
5948 /* Indices of image specification fields in gs_format, below. */
5950 enum jpeg_keyword_index
5959 JPEG_HEURISTIC_MASK
,
5965 /* Vector of image_keyword structures describing the format
5966 of valid user-defined image specifications. */
5968 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5970 {":type", IMAGE_SYMBOL_VALUE
, 1},
5971 {":data", IMAGE_STRING_VALUE
, 0},
5972 {":file", IMAGE_STRING_VALUE
, 0},
5973 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5974 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5975 {":relief", IMAGE_INTEGER_VALUE
, 0},
5976 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5977 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5978 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5979 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5982 /* Structure describing the image type `jpeg'. */
5984 static struct image_type jpeg_type
=
5993 /* Return non-zero if OBJECT is a valid JPEG image specification. */
5996 jpeg_image_p (Lisp_Object object
)
5998 struct image_keyword fmt
[JPEG_LAST
];
6000 memcpy (fmt
, jpeg_format
, sizeof fmt
);
6002 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6005 /* Must specify either the :data or :file keyword. */
6006 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6009 #endif /* HAVE_JPEG || HAVE_NS */
6013 /* Work around a warning about HAVE_STDLIB_H being redefined in
6015 #ifdef HAVE_STDLIB_H
6016 #define HAVE_STDLIB_H_1
6017 #undef HAVE_STDLIB_H
6018 #endif /* HAVE_STLIB_H */
6020 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6021 /* In older releases of the jpeg library, jpeglib.h will define boolean
6022 differently depending on __WIN32__, so make sure it is defined. */
6026 #include <jpeglib.h>
6029 #ifdef HAVE_STLIB_H_1
6030 #define HAVE_STDLIB_H 1
6035 /* JPEG library details. */
6036 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6037 DEF_IMGLIB_FN (jpeg_start_decompress
);
6038 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6039 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6040 DEF_IMGLIB_FN (jpeg_read_header
);
6041 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6042 DEF_IMGLIB_FN (jpeg_std_error
);
6043 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6046 init_jpeg_functions (Lisp_Object libraries
)
6050 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6053 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6054 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6055 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6056 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6057 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6058 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6059 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6060 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6064 /* Wrapper since we can't directly assign the function pointer
6065 to another function pointer that was declared more completely easily. */
6067 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6069 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6074 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6075 #define fn_jpeg_start_decompress jpeg_start_decompress
6076 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6077 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6078 #define fn_jpeg_read_header jpeg_read_header
6079 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6080 #define fn_jpeg_std_error jpeg_std_error
6081 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6083 #endif /* HAVE_NTGUI */
6085 struct my_jpeg_error_mgr
6087 struct jpeg_error_mgr pub
;
6088 jmp_buf setjmp_buffer
;
6093 my_error_exit (j_common_ptr cinfo
)
6095 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6096 longjmp (mgr
->setjmp_buffer
, 1);
6100 /* Init source method for JPEG data source manager. Called by
6101 jpeg_read_header() before any data is actually read. See
6102 libjpeg.doc from the JPEG lib distribution. */
6105 our_common_init_source (j_decompress_ptr cinfo
)
6110 /* Method to terminate data source. Called by
6111 jpeg_finish_decompress() after all data has been processed. */
6114 our_common_term_source (j_decompress_ptr cinfo
)
6119 /* Fill input buffer method for JPEG data source manager. Called
6120 whenever more data is needed. We read the whole image in one step,
6121 so this only adds a fake end of input marker at the end. */
6123 static JOCTET our_memory_buffer
[2];
6126 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6128 /* Insert a fake EOI marker. */
6129 struct jpeg_source_mgr
*src
= cinfo
->src
;
6131 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6132 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6134 src
->next_input_byte
= our_memory_buffer
;
6135 src
->bytes_in_buffer
= 2;
6140 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6141 is the JPEG data source manager. */
6144 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6146 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6150 if (num_bytes
> src
->bytes_in_buffer
)
6151 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6153 src
->bytes_in_buffer
-= num_bytes
;
6154 src
->next_input_byte
+= num_bytes
;
6159 /* Set up the JPEG lib for reading an image from DATA which contains
6160 LEN bytes. CINFO is the decompression info structure created for
6161 reading the image. */
6164 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6166 struct jpeg_source_mgr
*src
;
6168 if (cinfo
->src
== NULL
)
6170 /* First time for this JPEG object? */
6171 cinfo
->src
= (struct jpeg_source_mgr
*)
6172 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6173 sizeof (struct jpeg_source_mgr
));
6174 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6175 src
->next_input_byte
= data
;
6178 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6179 src
->init_source
= our_common_init_source
;
6180 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6181 src
->skip_input_data
= our_memory_skip_input_data
;
6182 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6183 src
->term_source
= our_common_term_source
;
6184 src
->bytes_in_buffer
= len
;
6185 src
->next_input_byte
= data
;
6189 struct jpeg_stdio_mgr
6191 struct jpeg_source_mgr mgr
;
6198 /* Size of buffer to read JPEG from file.
6199 Not too big, as we want to use alloc_small. */
6200 #define JPEG_STDIO_BUFFER_SIZE 8192
6203 /* Fill input buffer method for JPEG data source manager. Called
6204 whenever more data is needed. The data is read from a FILE *. */
6207 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6209 struct jpeg_stdio_mgr
*src
;
6211 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6216 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6218 src
->mgr
.bytes_in_buffer
= bytes
;
6221 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6223 src
->buffer
[0] = (JOCTET
) 0xFF;
6224 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6225 src
->mgr
.bytes_in_buffer
= 2;
6227 src
->mgr
.next_input_byte
= src
->buffer
;
6234 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6235 is the JPEG data source manager. */
6238 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6240 struct jpeg_stdio_mgr
*src
;
6241 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6243 while (num_bytes
> 0 && !src
->finished
)
6245 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6247 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6248 src
->mgr
.next_input_byte
+= num_bytes
;
6253 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6254 src
->mgr
.bytes_in_buffer
= 0;
6255 src
->mgr
.next_input_byte
= NULL
;
6257 our_stdio_fill_input_buffer (cinfo
);
6263 /* Set up the JPEG lib for reading an image from a FILE *.
6264 CINFO is the decompression info structure created for
6265 reading the image. */
6268 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6270 struct jpeg_stdio_mgr
*src
;
6272 if (cinfo
->src
!= NULL
)
6273 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6276 /* First time for this JPEG object? */
6277 cinfo
->src
= (struct jpeg_source_mgr
*)
6278 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6279 sizeof (struct jpeg_stdio_mgr
));
6280 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6281 src
->buffer
= (JOCTET
*)
6282 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6283 JPEG_STDIO_BUFFER_SIZE
);
6288 src
->mgr
.init_source
= our_common_init_source
;
6289 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6290 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6291 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6292 src
->mgr
.term_source
= our_common_term_source
;
6293 src
->mgr
.bytes_in_buffer
= 0;
6294 src
->mgr
.next_input_byte
= NULL
;
6298 /* Load image IMG for use on frame F. Patterned after example.c
6299 from the JPEG lib. */
6302 jpeg_load (struct frame
*f
, struct image
*img
)
6304 struct jpeg_decompress_struct cinfo
;
6305 struct my_jpeg_error_mgr mgr
;
6306 Lisp_Object file
, specified_file
;
6307 Lisp_Object specified_data
;
6308 FILE * volatile fp
= NULL
;
6310 int row_stride
, x
, y
;
6311 XImagePtr ximg
= NULL
;
6313 unsigned long *colors
;
6315 struct gcpro gcpro1
;
6317 /* Open the JPEG file. */
6318 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6319 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6323 if (NILP (specified_data
))
6325 file
= x_find_image_file (specified_file
);
6326 if (!STRINGP (file
))
6328 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6333 fp
= fopen (SDATA (file
), "rb");
6336 image_error ("Cannot open `%s'", file
, Qnil
);
6342 /* Customize libjpeg's error handling to call my_error_exit when an
6343 error is detected. This function will perform a longjmp.
6344 Casting return value avoids a GCC warning on W32. */
6345 cinfo
.err
= (struct jpeg_error_mgr
*)fn_jpeg_std_error (&mgr
.pub
);
6346 mgr
.pub
.error_exit
= my_error_exit
;
6348 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6352 /* Called from my_error_exit. Display a JPEG error. */
6353 char buffer
[JMSG_LENGTH_MAX
];
6354 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
6355 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6356 build_string (buffer
));
6359 /* Close the input file and destroy the JPEG object. */
6361 fclose ((FILE *) fp
);
6362 fn_jpeg_destroy_decompress (&cinfo
);
6364 /* If we already have an XImage, free that. */
6365 x_destroy_x_image (ximg
);
6367 /* Free pixmap and colors. */
6368 x_clear_image (f
, img
);
6374 /* Create the JPEG decompression object. Let it read from fp.
6375 Read the JPEG image header. */
6376 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6378 if (NILP (specified_data
))
6379 jpeg_file_src (&cinfo
, (FILE *) fp
);
6381 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6382 SBYTES (specified_data
));
6384 fn_jpeg_read_header (&cinfo
, 1);
6386 /* Customize decompression so that color quantization will be used.
6387 Start decompression. */
6388 cinfo
.quantize_colors
= 1;
6389 fn_jpeg_start_decompress (&cinfo
);
6390 width
= img
->width
= cinfo
.output_width
;
6391 height
= img
->height
= cinfo
.output_height
;
6393 if (!check_image_size (f
, width
, height
))
6395 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6396 longjmp (mgr
.setjmp_buffer
, 2);
6399 /* Create X image and pixmap. */
6400 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6401 longjmp (mgr
.setjmp_buffer
, 2);
6403 /* Allocate colors. When color quantization is used,
6404 cinfo.actual_number_of_colors has been set with the number of
6405 colors generated, and cinfo.colormap is a two-dimensional array
6406 of color indices in the range 0..cinfo.actual_number_of_colors.
6407 No more than 255 colors will be generated. */
6411 if (cinfo
.out_color_components
> 2)
6412 ir
= 0, ig
= 1, ib
= 2;
6413 else if (cinfo
.out_color_components
> 1)
6414 ir
= 0, ig
= 1, ib
= 0;
6416 ir
= 0, ig
= 0, ib
= 0;
6418 /* Use the color table mechanism because it handles colors that
6419 cannot be allocated nicely. Such colors will be replaced with
6420 a default color, and we don't have to care about which colors
6421 can be freed safely, and which can't. */
6422 init_color_table ();
6423 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6426 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6428 /* Multiply RGB values with 255 because X expects RGB values
6429 in the range 0..0xffff. */
6430 int r
= cinfo
.colormap
[ir
][i
] << 8;
6431 int g
= cinfo
.colormap
[ig
][i
] << 8;
6432 int b
= cinfo
.colormap
[ib
][i
] << 8;
6433 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6436 #ifdef COLOR_TABLE_SUPPORT
6437 /* Remember those colors actually allocated. */
6438 img
->colors
= colors_in_color_table (&img
->ncolors
);
6439 free_color_table ();
6440 #endif /* COLOR_TABLE_SUPPORT */
6444 row_stride
= width
* cinfo
.output_components
;
6445 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6447 for (y
= 0; y
< height
; ++y
)
6449 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6450 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6451 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6455 fn_jpeg_finish_decompress (&cinfo
);
6456 fn_jpeg_destroy_decompress (&cinfo
);
6458 fclose ((FILE *) fp
);
6460 /* Maybe fill in the background field while we have ximg handy. */
6461 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6462 /* Casting avoids a GCC warning. */
6463 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6465 /* Put the image into the pixmap. */
6466 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6467 x_destroy_x_image (ximg
);
6472 #else /* HAVE_JPEG */
6476 jpeg_load (struct frame
*f
, struct image
*img
)
6478 return ns_load_image (f
, img
,
6479 image_spec_value (img
->spec
, QCfile
, NULL
),
6480 image_spec_value (img
->spec
, QCdata
, NULL
));
6482 #endif /* HAVE_NS */
6484 #endif /* !HAVE_JPEG */
6488 /***********************************************************************
6490 ***********************************************************************/
6492 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6494 static int tiff_image_p (Lisp_Object object
);
6495 static int tiff_load (struct frame
*f
, struct image
*img
);
6497 /* The symbol `tiff' identifying images of this type. */
6501 /* Indices of image specification fields in tiff_format, below. */
6503 enum tiff_keyword_index
6512 TIFF_HEURISTIC_MASK
,
6519 /* Vector of image_keyword structures describing the format
6520 of valid user-defined image specifications. */
6522 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6524 {":type", IMAGE_SYMBOL_VALUE
, 1},
6525 {":data", IMAGE_STRING_VALUE
, 0},
6526 {":file", IMAGE_STRING_VALUE
, 0},
6527 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6528 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6529 {":relief", IMAGE_INTEGER_VALUE
, 0},
6530 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6531 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6532 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6533 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6534 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6537 /* Structure describing the image type `tiff'. */
6539 static struct image_type tiff_type
=
6548 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6551 tiff_image_p (Lisp_Object object
)
6553 struct image_keyword fmt
[TIFF_LAST
];
6554 memcpy (fmt
, tiff_format
, sizeof fmt
);
6556 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6559 /* Must specify either the :data or :file keyword. */
6560 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6563 #endif /* HAVE_TIFF || HAVE_NS */
6571 /* TIFF library details. */
6572 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
6573 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
6574 DEF_IMGLIB_FN (TIFFOpen
);
6575 DEF_IMGLIB_FN (TIFFClientOpen
);
6576 DEF_IMGLIB_FN (TIFFGetField
);
6577 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
6578 DEF_IMGLIB_FN (TIFFClose
);
6579 DEF_IMGLIB_FN (TIFFSetDirectory
);
6582 init_tiff_functions (Lisp_Object libraries
)
6586 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6589 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6590 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6591 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6592 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6593 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6594 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6595 LOAD_IMGLIB_FN (library
, TIFFClose
);
6596 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6602 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6603 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6604 #define fn_TIFFOpen TIFFOpen
6605 #define fn_TIFFClientOpen TIFFClientOpen
6606 #define fn_TIFFGetField TIFFGetField
6607 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6608 #define fn_TIFFClose TIFFClose
6609 #define fn_TIFFSetDirectory TIFFSetDirectory
6610 #endif /* HAVE_NTGUI */
6613 /* Reading from a memory buffer for TIFF images Based on the PNG
6614 memory source, but we have to provide a lot of extra functions.
6617 We really only need to implement read and seek, but I am not
6618 convinced that the TIFF library is smart enough not to destroy
6619 itself if we only hand it the function pointers we need to
6624 unsigned char *bytes
;
6631 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6633 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6635 if (size
> src
->len
- src
->index
)
6637 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6643 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6649 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6651 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6656 case SEEK_SET
: /* Go from beginning of source. */
6660 case SEEK_END
: /* Go from end of source. */
6661 idx
= src
->len
+ off
;
6664 case SEEK_CUR
: /* Go from current position. */
6665 idx
= src
->index
+ off
;
6668 default: /* Invalid `whence'. */
6672 if (idx
> src
->len
|| idx
< 0)
6680 tiff_close_memory (thandle_t data
)
6687 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6689 /* It is already _IN_ memory. */
6694 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6696 /* We don't need to do this. */
6700 tiff_size_of_memory (thandle_t data
)
6702 return ((tiff_memory_source
*) data
)->len
;
6707 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6712 len
= sprintf (buf
, "TIFF error: %s ", title
);
6713 vsprintf (buf
+ len
, format
, ap
);
6714 add_to_log (buf
, Qnil
, Qnil
);
6719 tiff_warning_handler (const char *title
, const char *format
, va_list ap
)
6724 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6725 vsprintf (buf
+ len
, format
, ap
);
6726 add_to_log (buf
, Qnil
, Qnil
);
6730 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6734 tiff_load (struct frame
*f
, struct image
*img
)
6736 Lisp_Object file
, specified_file
;
6737 Lisp_Object specified_data
;
6739 int width
, height
, x
, y
, count
;
6743 struct gcpro gcpro1
;
6744 tiff_memory_source memsrc
;
6747 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6748 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6752 fn_TIFFSetErrorHandler (tiff_error_handler
);
6753 fn_TIFFSetWarningHandler (tiff_warning_handler
);
6755 if (NILP (specified_data
))
6757 /* Read from a file */
6758 file
= x_find_image_file (specified_file
);
6759 if (!STRINGP (file
))
6761 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6766 /* Try to open the image file. Casting return value avoids a
6767 GCC warning on W32. */
6768 tiff
= (TIFF
*)fn_TIFFOpen (SDATA (file
), "r");
6771 image_error ("Cannot open `%s'", file
, Qnil
);
6778 /* Memory source! */
6779 memsrc
.bytes
= SDATA (specified_data
);
6780 memsrc
.len
= SBYTES (specified_data
);
6783 /* Casting return value avoids a GCC warning on W32. */
6784 tiff
= (TIFF
*)fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
6785 (TIFFReadWriteProc
) tiff_read_from_memory
,
6786 (TIFFReadWriteProc
) tiff_write_from_memory
,
6787 tiff_seek_in_memory
,
6789 tiff_size_of_memory
,
6795 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6801 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6802 if (INTEGERP (image
))
6804 int ino
= XFASTINT (image
);
6805 if (!fn_TIFFSetDirectory (tiff
, ino
))
6807 image_error ("Invalid image number `%s' in image `%s'",
6809 fn_TIFFClose (tiff
);
6815 /* Get width and height of the image, and allocate a raster buffer
6816 of width x height 32-bit values. */
6817 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6818 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6820 if (!check_image_size (f
, width
, height
))
6822 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6823 fn_TIFFClose (tiff
);
6828 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6830 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6832 /* Count the number of images in the file. */
6833 for (count
= 1, rc2
= 1; rc2
; count
++)
6834 rc2
= fn_TIFFSetDirectory (tiff
, count
);
6837 img
->data
.lisp_val
= Fcons (Qcount
,
6838 Fcons (make_number (count
),
6839 img
->data
.lisp_val
));
6841 fn_TIFFClose (tiff
);
6844 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6850 /* Create the X image and pixmap. */
6851 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6858 /* Initialize the color table. */
6859 init_color_table ();
6861 /* Process the pixel raster. Origin is in the lower-left corner. */
6862 for (y
= 0; y
< height
; ++y
)
6864 uint32
*row
= buf
+ y
* width
;
6866 for (x
= 0; x
< width
; ++x
)
6868 uint32 abgr
= row
[x
];
6869 int r
= TIFFGetR (abgr
) << 8;
6870 int g
= TIFFGetG (abgr
) << 8;
6871 int b
= TIFFGetB (abgr
) << 8;
6872 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6876 #ifdef COLOR_TABLE_SUPPORT
6877 /* Remember the colors allocated for the image. Free the color table. */
6878 img
->colors
= colors_in_color_table (&img
->ncolors
);
6879 free_color_table ();
6880 #endif /* COLOR_TABLE_SUPPORT */
6883 img
->height
= height
;
6885 /* Maybe fill in the background field while we have ximg handy. */
6886 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6887 /* Casting avoids a GCC warning on W32. */
6888 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6890 /* Put the image into the pixmap, then free the X image and its buffer. */
6891 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6892 x_destroy_x_image (ximg
);
6899 #else /* HAVE_TIFF */
6903 tiff_load (struct frame
*f
, struct image
*img
)
6905 return ns_load_image (f
, img
,
6906 image_spec_value (img
->spec
, QCfile
, NULL
),
6907 image_spec_value (img
->spec
, QCdata
, NULL
));
6909 #endif /* HAVE_NS */
6911 #endif /* !HAVE_TIFF */
6915 /***********************************************************************
6917 ***********************************************************************/
6919 #if defined (HAVE_GIF) || defined (HAVE_NS)
6921 static int gif_image_p (Lisp_Object object
);
6922 static int gif_load (struct frame
*f
, struct image
*img
);
6923 static void gif_clear_image (struct frame
*f
, struct image
*img
);
6925 /* The symbol `gif' identifying images of this type. */
6929 /* Indices of image specification fields in gif_format, below. */
6931 enum gif_keyword_index
6947 /* Vector of image_keyword structures describing the format
6948 of valid user-defined image specifications. */
6950 static const struct image_keyword gif_format
[GIF_LAST
] =
6952 {":type", IMAGE_SYMBOL_VALUE
, 1},
6953 {":data", IMAGE_STRING_VALUE
, 0},
6954 {":file", IMAGE_STRING_VALUE
, 0},
6955 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6956 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6957 {":relief", IMAGE_INTEGER_VALUE
, 0},
6958 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6959 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6960 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6961 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6962 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6965 /* Structure describing the image type `gif'. */
6967 static struct image_type gif_type
=
6976 /* Free X resources of GIF image IMG which is used on frame F. */
6979 gif_clear_image (struct frame
*f
, struct image
*img
)
6981 /* IMG->data.ptr_val may contain metadata with extension data. */
6982 img
->data
.lisp_val
= Qnil
;
6983 x_clear_image (f
, img
);
6986 /* Return non-zero if OBJECT is a valid GIF image specification. */
6989 gif_image_p (Lisp_Object object
)
6991 struct image_keyword fmt
[GIF_LAST
];
6992 memcpy (fmt
, gif_format
, sizeof fmt
);
6994 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
6997 /* Must specify either the :data or :file keyword. */
6998 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7001 #endif /* HAVE_GIF */
7005 #if defined (HAVE_NTGUI)
7006 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7007 Undefine before redefining to avoid a preprocessor warning. */
7011 /* avoid conflict with QuickdrawText.h */
7012 #define DrawText gif_DrawText
7013 #include <gif_lib.h>
7016 #else /* HAVE_NTGUI */
7018 #include <gif_lib.h>
7020 #endif /* HAVE_NTGUI */
7025 /* GIF library details. */
7026 DEF_IMGLIB_FN (DGifCloseFile
);
7027 DEF_IMGLIB_FN (DGifSlurp
);
7028 DEF_IMGLIB_FN (DGifOpen
);
7029 DEF_IMGLIB_FN (DGifOpenFileName
);
7032 init_gif_functions (Lisp_Object libraries
)
7036 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7039 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7040 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7041 LOAD_IMGLIB_FN (library
, DGifOpen
);
7042 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7048 #define fn_DGifCloseFile DGifCloseFile
7049 #define fn_DGifSlurp DGifSlurp
7050 #define fn_DGifOpen DGifOpen
7051 #define fn_DGifOpenFileName DGifOpenFileName
7053 #endif /* HAVE_NTGUI */
7055 /* Reading a GIF image from memory
7056 Based on the PNG memory stuff to a certain extent. */
7060 unsigned char *bytes
;
7066 /* Make the current memory source available to gif_read_from_memory.
7067 It's done this way because not all versions of libungif support
7068 a UserData field in the GifFileType structure. */
7069 static gif_memory_source
*current_gif_memory_src
;
7072 gif_read_from_memory (GifFileType
*file
, GifByteType
*buf
, int len
)
7074 gif_memory_source
*src
= current_gif_memory_src
;
7076 if (len
> src
->len
- src
->index
)
7079 memcpy (buf
, src
->bytes
+ src
->index
, len
);
7085 /* Load GIF image IMG for use on frame F. Value is non-zero if
7088 static const int interlace_start
[] = {0, 4, 2, 1};
7089 static const int interlace_increment
[] = {8, 8, 4, 2};
7092 gif_load (struct frame
*f
, struct image
*img
)
7094 Lisp_Object file
, specified_file
;
7095 Lisp_Object specified_data
;
7096 int rc
, width
, height
, x
, y
, i
;
7098 ColorMapObject
*gif_color_map
;
7099 unsigned long pixel_colors
[256];
7101 struct gcpro gcpro1
;
7103 int ino
, image_height
, image_width
;
7104 gif_memory_source memsrc
;
7105 unsigned char *raster
;
7107 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7108 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7112 if (NILP (specified_data
))
7114 file
= x_find_image_file (specified_file
);
7115 if (!STRINGP (file
))
7117 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7122 /* Open the GIF file. Casting return value avoids a GCC warning
7124 gif
= (GifFileType
*)fn_DGifOpenFileName (SDATA (file
));
7127 image_error ("Cannot open `%s'", file
, Qnil
);
7134 /* Read from memory! */
7135 current_gif_memory_src
= &memsrc
;
7136 memsrc
.bytes
= SDATA (specified_data
);
7137 memsrc
.len
= SBYTES (specified_data
);
7140 /* Casting return value avoids a GCC warning on W32. */
7141 gif
= (GifFileType
*) fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7144 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7150 /* Before reading entire contents, check the declared image size. */
7151 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7153 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7154 fn_DGifCloseFile (gif
);
7159 /* Read entire contents. */
7160 rc
= fn_DGifSlurp (gif
);
7161 if (rc
== GIF_ERROR
)
7163 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7164 fn_DGifCloseFile (gif
);
7169 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7170 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7171 if (ino
>= gif
->ImageCount
)
7173 image_error ("Invalid image number `%s' in image `%s'",
7175 fn_DGifCloseFile (gif
);
7180 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7181 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7182 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7183 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7184 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7185 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7187 width
= img
->width
= max (gif
->SWidth
,
7188 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7189 img
->corners
[RIGHT_CORNER
]));
7190 height
= img
->height
= max (gif
->SHeight
,
7191 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7192 img
->corners
[BOT_CORNER
]));
7194 if (!check_image_size (f
, width
, height
))
7196 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7197 fn_DGifCloseFile (gif
);
7202 /* Create the X image and pixmap. */
7203 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7205 fn_DGifCloseFile (gif
);
7210 /* Allocate colors. */
7211 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7213 gif_color_map
= gif
->SColorMap
;
7214 init_color_table ();
7215 memset (pixel_colors
, 0, sizeof pixel_colors
);
7218 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7220 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7221 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7222 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7223 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7226 #ifdef COLOR_TABLE_SUPPORT
7227 img
->colors
= colors_in_color_table (&img
->ncolors
);
7228 free_color_table ();
7229 #endif /* COLOR_TABLE_SUPPORT */
7231 /* Clear the part of the screen image that are not covered by
7232 the image from the GIF file. Full animated GIF support
7233 requires more than can be done here (see the gif89 spec,
7234 disposal methods). Let's simply assume that the part
7235 not covered by a sub-image is in the frame's background color. */
7236 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7237 for (x
= 0; x
< width
; ++x
)
7238 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7240 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7241 for (x
= 0; x
< width
; ++x
)
7242 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7244 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7246 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7247 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7248 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7249 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7252 /* Read the GIF image into the X image. We use a local variable
7253 `raster' here because RasterBits below is a char *, and invites
7254 problems with bytes >= 0x80. */
7255 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7257 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7260 int row
= interlace_start
[0];
7264 for (y
= 0; y
< image_height
; y
++)
7266 if (row
>= image_height
)
7268 row
= interlace_start
[++pass
];
7269 while (row
>= image_height
)
7270 row
= interlace_start
[++pass
];
7273 for (x
= 0; x
< image_width
; x
++)
7275 int i
= raster
[(y
* image_width
) + x
];
7276 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7277 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7280 row
+= interlace_increment
[pass
];
7285 for (y
= 0; y
< image_height
; ++y
)
7286 for (x
= 0; x
< image_width
; ++x
)
7288 int i
= raster
[y
* image_width
+ x
];
7289 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7290 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7294 /* Save GIF image extension data for `image-metadata'.
7295 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7296 img
->data
.lisp_val
= Qnil
;
7297 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7299 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7300 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7301 /* Append (... FUNCTION "BYTES") */
7302 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7303 Fcons (make_number (ext
->Function
),
7304 img
->data
.lisp_val
));
7305 img
->data
.lisp_val
= Fcons (Qextension_data
,
7306 Fcons (Fnreverse (img
->data
.lisp_val
),
7309 if (gif
->ImageCount
> 1)
7310 img
->data
.lisp_val
= Fcons (Qcount
,
7311 Fcons (make_number (gif
->ImageCount
),
7312 img
->data
.lisp_val
));
7314 fn_DGifCloseFile (gif
);
7316 /* Maybe fill in the background field while we have ximg handy. */
7317 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7318 /* Casting avoids a GCC warning. */
7319 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7321 /* Put the image into the pixmap, then free the X image and its buffer. */
7322 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7323 x_destroy_x_image (ximg
);
7329 #else /* !HAVE_GIF */
7333 gif_load (struct frame
*f
, struct image
*img
)
7335 return ns_load_image (f
, img
,
7336 image_spec_value (img
->spec
, QCfile
, NULL
),
7337 image_spec_value (img
->spec
, QCdata
, NULL
));
7339 #endif /* HAVE_NS */
7341 #endif /* HAVE_GIF */
7345 /***********************************************************************
7347 ***********************************************************************/
7349 #if defined (HAVE_RSVG)
7351 /* Function prototypes. */
7353 static int svg_image_p (Lisp_Object object
);
7354 static int svg_load (struct frame
*f
, struct image
*img
);
7356 static int svg_load_image (struct frame
*, struct image
*,
7357 unsigned char *, unsigned int);
7359 /* The symbol `svg' identifying images of this type. */
7363 /* Indices of image specification fields in svg_format, below. */
7365 enum svg_keyword_index
7380 /* Vector of image_keyword structures describing the format
7381 of valid user-defined image specifications. */
7383 static const struct image_keyword svg_format
[SVG_LAST
] =
7385 {":type", IMAGE_SYMBOL_VALUE
, 1},
7386 {":data", IMAGE_STRING_VALUE
, 0},
7387 {":file", IMAGE_STRING_VALUE
, 0},
7388 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7389 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7390 {":relief", IMAGE_INTEGER_VALUE
, 0},
7391 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7392 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7393 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7394 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7397 /* Structure describing the image type `svg'. Its the same type of
7398 structure defined for all image formats, handled by emacs image
7399 functions. See struct image_type in dispextern.h. */
7401 static struct image_type svg_type
=
7403 /* An identifier showing that this is an image structure for the SVG format. */
7405 /* Handle to a function that can be used to identify a SVG file. */
7407 /* Handle to function used to load a SVG file. */
7409 /* Handle to function to free sresources for SVG. */
7411 /* An internal field to link to the next image type in a list of
7412 image types, will be filled in when registering the format. */
7417 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7418 this by calling parse_image_spec and supplying the keywords that
7419 identify the SVG format. */
7422 svg_image_p (Lisp_Object object
)
7424 struct image_keyword fmt
[SVG_LAST
];
7425 memcpy (fmt
, svg_format
, sizeof fmt
);
7427 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7430 /* Must specify either the :data or :file keyword. */
7431 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7434 #include <librsvg/rsvg.h>
7438 /* SVG library functions. */
7439 DEF_IMGLIB_FN (rsvg_handle_new
);
7440 DEF_IMGLIB_FN (rsvg_handle_get_dimensions
);
7441 DEF_IMGLIB_FN (rsvg_handle_write
);
7442 DEF_IMGLIB_FN (rsvg_handle_close
);
7443 DEF_IMGLIB_FN (rsvg_handle_get_pixbuf
);
7444 DEF_IMGLIB_FN (rsvg_handle_free
);
7446 DEF_IMGLIB_FN (gdk_pixbuf_get_width
);
7447 DEF_IMGLIB_FN (gdk_pixbuf_get_height
);
7448 DEF_IMGLIB_FN (gdk_pixbuf_get_pixels
);
7449 DEF_IMGLIB_FN (gdk_pixbuf_get_rowstride
);
7450 DEF_IMGLIB_FN (gdk_pixbuf_get_colorspace
);
7451 DEF_IMGLIB_FN (gdk_pixbuf_get_n_channels
);
7452 DEF_IMGLIB_FN (gdk_pixbuf_get_has_alpha
);
7453 DEF_IMGLIB_FN (gdk_pixbuf_get_bits_per_sample
);
7455 DEF_IMGLIB_FN (g_type_init
);
7456 DEF_IMGLIB_FN (g_object_unref
);
7457 DEF_IMGLIB_FN (g_error_free
);
7459 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
7462 init_svg_functions (Lisp_Object libraries
)
7464 HMODULE library
, gdklib
, glib
, gobject
;
7466 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
7467 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
7468 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
7469 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
7472 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
7473 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
7474 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
7475 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
7476 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
7477 LOAD_IMGLIB_FN (library
, rsvg_handle_free
);
7479 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
7480 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
7481 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
7482 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
7483 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
7484 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
7485 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
7486 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
7488 LOAD_IMGLIB_FN (gobject
, g_type_init
);
7489 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
7490 LOAD_IMGLIB_FN (glib
, g_error_free
);
7496 /* The following aliases for library functions allow dynamic loading
7497 to be used on some platforms. */
7498 #define fn_rsvg_handle_new rsvg_handle_new
7499 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
7500 #define fn_rsvg_handle_write rsvg_handle_write
7501 #define fn_rsvg_handle_close rsvg_handle_close
7502 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
7503 #define fn_rsvg_handle_free rsvg_handle_free
7505 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
7506 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
7507 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
7508 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
7509 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
7510 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
7511 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
7512 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
7514 #define fn_g_type_init g_type_init
7515 #define fn_g_object_unref g_object_unref
7516 #define fn_g_error_free g_error_free
7517 #endif /* !HAVE_NTGUI */
7519 /* Load SVG image IMG for use on frame F. Value is non-zero if
7520 successful. this function will go into the svg_type structure, and
7521 the prototype thus needs to be compatible with that structure. */
7524 svg_load (struct frame
*f
, struct image
*img
)
7527 Lisp_Object file_name
;
7529 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7530 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7531 if (STRINGP (file_name
))
7534 unsigned char *contents
;
7536 struct gcpro gcpro1
;
7538 file
= x_find_image_file (file_name
);
7540 if (!STRINGP (file
))
7542 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7547 /* Read the entire file into memory. */
7548 contents
= slurp_file (SDATA (file
), &size
);
7549 if (contents
== NULL
)
7551 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
7555 /* If the file was slurped into memory properly, parse it. */
7556 success_p
= svg_load_image (f
, img
, contents
, size
);
7560 /* Else its not a file, its a lisp object. Load the image from a
7561 lisp object rather than a file. */
7566 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7567 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
7573 /* svg_load_image is a helper function for svg_load, which does the
7574 actual loading given contents and size, apart from frame and image
7575 structures, passed from svg_load.
7577 Uses librsvg to do most of the image processing.
7579 Returns non-zero when successful. */
7581 svg_load_image (struct frame
*f
, /* Pointer to emacs frame structure. */
7582 struct image
*img
, /* Pointer to emacs image structure. */
7583 unsigned char *contents
, /* String containing the SVG XML data to be parsed. */
7584 unsigned int size
) /* Size of data in bytes. */
7586 RsvgHandle
*rsvg_handle
;
7587 RsvgDimensionData dimension_data
;
7588 GError
*error
= NULL
;
7592 const guint8
*pixels
;
7595 Lisp_Object specified_bg
;
7600 /* g_type_init is a glib function that must be called prior to using
7601 gnome type library functions. */
7603 /* Make a handle to a new rsvg object. */
7604 rsvg_handle
= (RsvgHandle
*) fn_rsvg_handle_new ();
7606 /* Parse the contents argument and fill in the rsvg_handle. */
7607 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &error
);
7608 if (error
) goto rsvg_error
;
7610 /* The parsing is complete, rsvg_handle is ready to used, close it
7611 for further writes. */
7612 fn_rsvg_handle_close (rsvg_handle
, &error
);
7613 if (error
) goto rsvg_error
;
7615 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
7616 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
7618 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7622 /* We can now get a valid pixel buffer from the svg file, if all
7624 pixbuf
= (GdkPixbuf
*) fn_rsvg_handle_get_pixbuf (rsvg_handle
);
7625 if (!pixbuf
) goto rsvg_error
;
7626 fn_g_object_unref (rsvg_handle
);
7628 /* Extract some meta data from the svg handle. */
7629 width
= fn_gdk_pixbuf_get_width (pixbuf
);
7630 height
= fn_gdk_pixbuf_get_height (pixbuf
);
7631 pixels
= (const guint8
*) fn_gdk_pixbuf_get_pixels (pixbuf
);
7632 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
7634 /* Validate the svg meta data. */
7635 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
7636 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
7637 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
7638 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
7640 /* Try to create a x pixmap to hold the svg pixmap. */
7641 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7643 fn_g_object_unref (pixbuf
);
7647 init_color_table ();
7649 /* Handle alpha channel by combining the image with a background
7651 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
7652 if (!STRINGP (specified_bg
)
7653 || !x_defined_color (f
, SDATA (specified_bg
), &background
, 0))
7656 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
7657 x_query_color (f
, &background
);
7659 ns_query_color (FRAME_BACKGROUND_COLOR (f
), &background
, 1);
7663 /* SVG pixmaps specify transparency in the last byte, so right
7664 shift 8 bits to get rid of it, since emacs doesn't support
7666 background
.red
>>= 8;
7667 background
.green
>>= 8;
7668 background
.blue
>>= 8;
7670 /* This loop handles opacity values, since Emacs assumes
7671 non-transparent images. Each pixel must be "flattened" by
7672 calculating the resulting color, given the transparency of the
7673 pixel, and the image background color. */
7674 for (y
= 0; y
< height
; ++y
)
7676 for (x
= 0; x
< width
; ++x
)
7686 opacity
= *pixels
++;
7688 red
= ((red
* opacity
)
7689 + (background
.red
* ((1 << 8) - opacity
)));
7690 green
= ((green
* opacity
)
7691 + (background
.green
* ((1 << 8) - opacity
)));
7692 blue
= ((blue
* opacity
)
7693 + (background
.blue
* ((1 << 8) - opacity
)));
7695 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
7698 pixels
+= rowstride
- 4 * width
;
7701 #ifdef COLOR_TABLE_SUPPORT
7702 /* Remember colors allocated for this image. */
7703 img
->colors
= colors_in_color_table (&img
->ncolors
);
7704 free_color_table ();
7705 #endif /* COLOR_TABLE_SUPPORT */
7707 fn_g_object_unref (pixbuf
);
7710 img
->height
= height
;
7712 /* Maybe fill in the background field while we have ximg handy.
7713 Casting avoids a GCC warning. */
7714 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7716 /* Put the image into the pixmap, then free the X image and its
7718 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7719 x_destroy_x_image (ximg
);
7724 fn_g_object_unref (rsvg_handle
);
7725 /* FIXME: Use error->message so the user knows what is the actual
7726 problem with the image. */
7727 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
7728 fn_g_error_free (error
);
7732 #endif /* defined (HAVE_RSVG) */
7737 /***********************************************************************
7739 ***********************************************************************/
7741 #ifdef HAVE_X_WINDOWS
7742 #define HAVE_GHOSTSCRIPT 1
7743 #endif /* HAVE_X_WINDOWS */
7745 /* The symbol `postscript' identifying images of this type. */
7747 Lisp_Object Qpostscript
;
7749 #ifdef HAVE_GHOSTSCRIPT
7751 static int gs_image_p (Lisp_Object object
);
7752 static int gs_load (struct frame
*f
, struct image
*img
);
7753 static void gs_clear_image (struct frame
*f
, struct image
*img
);
7755 /* Keyword symbols. */
7757 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
7759 /* Indices of image specification fields in gs_format, below. */
7761 enum gs_keyword_index
7779 /* Vector of image_keyword structures describing the format
7780 of valid user-defined image specifications. */
7782 static const struct image_keyword gs_format
[GS_LAST
] =
7784 {":type", IMAGE_SYMBOL_VALUE
, 1},
7785 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7786 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7787 {":file", IMAGE_STRING_VALUE
, 1},
7788 {":loader", IMAGE_FUNCTION_VALUE
, 0},
7789 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
7790 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7791 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7792 {":relief", IMAGE_INTEGER_VALUE
, 0},
7793 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7794 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7795 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7796 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7799 /* Structure describing the image type `ghostscript'. */
7801 static struct image_type gs_type
=
7811 /* Free X resources of Ghostscript image IMG which is used on frame F. */
7814 gs_clear_image (struct frame
*f
, struct image
*img
)
7816 /* IMG->data.ptr_val may contain a recorded colormap. */
7817 xfree (img
->data
.ptr_val
);
7818 x_clear_image (f
, img
);
7822 /* Return non-zero if OBJECT is a valid Ghostscript image
7826 gs_image_p (Lisp_Object object
)
7828 struct image_keyword fmt
[GS_LAST
];
7832 memcpy (fmt
, gs_format
, sizeof fmt
);
7834 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
7837 /* Bounding box must be a list or vector containing 4 integers. */
7838 tem
= fmt
[GS_BOUNDING_BOX
].value
;
7841 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
7842 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
7847 else if (VECTORP (tem
))
7849 if (XVECTOR (tem
)->size
!= 4)
7851 for (i
= 0; i
< 4; ++i
)
7852 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
7862 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
7866 gs_load (struct frame
*f
, struct image
*img
)
7869 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
7870 struct gcpro gcpro1
, gcpro2
;
7872 double in_width
, in_height
;
7873 Lisp_Object pixel_colors
= Qnil
;
7875 /* Compute pixel size of pixmap needed from the given size in the
7876 image specification. Sizes in the specification are in pt. 1 pt
7877 = 1/72 in, xdpi and ydpi are stored in the frame's X display
7879 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
7880 in_width
= XFASTINT (pt_width
) / 72.0;
7881 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
7882 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
7883 in_height
= XFASTINT (pt_height
) / 72.0;
7884 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
7886 if (!check_image_size (f
, img
->width
, img
->height
))
7888 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7892 /* Create the pixmap. */
7893 xassert (img
->pixmap
== NO_PIXMAP
);
7895 /* Only W32 version did BLOCK_INPUT here. ++kfs */
7897 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
7898 img
->width
, img
->height
,
7899 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
7904 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
7908 /* Call the loader to fill the pixmap. It returns a process object
7909 if successful. We do not record_unwind_protect here because
7910 other places in redisplay like calling window scroll functions
7911 don't either. Let the Lisp loader use `unwind-protect' instead. */
7912 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
7914 sprintf (buffer
, "%lu %lu",
7915 (unsigned long) FRAME_X_WINDOW (f
),
7916 (unsigned long) img
->pixmap
);
7917 window_and_pixmap_id
= build_string (buffer
);
7919 sprintf (buffer
, "%lu %lu",
7920 FRAME_FOREGROUND_PIXEL (f
),
7921 FRAME_BACKGROUND_PIXEL (f
));
7922 pixel_colors
= build_string (buffer
);
7924 XSETFRAME (frame
, f
);
7925 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
7927 loader
= intern ("gs-load-image");
7929 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
7930 make_number (img
->width
),
7931 make_number (img
->height
),
7932 window_and_pixmap_id
,
7935 return PROCESSP (img
->data
.lisp_val
);
7939 /* Kill the Ghostscript process that was started to fill PIXMAP on
7940 frame F. Called from XTread_socket when receiving an event
7941 telling Emacs that Ghostscript has finished drawing. */
7944 x_kill_gs_process (Pixmap pixmap
, struct frame
*f
)
7946 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
7950 /* Find the image containing PIXMAP. */
7951 for (i
= 0; i
< c
->used
; ++i
)
7952 if (c
->images
[i
]->pixmap
== pixmap
)
7955 /* Should someone in between have cleared the image cache, for
7956 instance, give up. */
7960 /* Kill the GS process. We should have found PIXMAP in the image
7961 cache and its image should contain a process object. */
7963 xassert (PROCESSP (img
->data
.lisp_val
));
7964 Fkill_process (img
->data
.lisp_val
, Qnil
);
7965 img
->data
.lisp_val
= Qnil
;
7967 #if defined (HAVE_X_WINDOWS)
7969 /* On displays with a mutable colormap, figure out the colors
7970 allocated for the image by looking at the pixels of an XImage for
7972 class = FRAME_X_VISUAL (f
)->class;
7973 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
7979 /* Try to get an XImage for img->pixmep. */
7980 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
7981 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
7986 /* Initialize the color table. */
7987 init_color_table ();
7989 /* For each pixel of the image, look its color up in the
7990 color table. After having done so, the color table will
7991 contain an entry for each color used by the image. */
7992 for (y
= 0; y
< img
->height
; ++y
)
7993 for (x
= 0; x
< img
->width
; ++x
)
7995 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
7996 lookup_pixel_color (f
, pixel
);
7999 /* Record colors in the image. Free color table and XImage. */
8000 #ifdef COLOR_TABLE_SUPPORT
8001 img
->colors
= colors_in_color_table (&img
->ncolors
);
8002 free_color_table ();
8004 XDestroyImage (ximg
);
8006 #if 0 /* This doesn't seem to be the case. If we free the colors
8007 here, we get a BadAccess later in x_clear_image when
8008 freeing the colors. */
8009 /* We have allocated colors once, but Ghostscript has also
8010 allocated colors on behalf of us. So, to get the
8011 reference counts right, free them once. */
8013 x_free_colors (f
, img
->colors
, img
->ncolors
);
8017 image_error ("Cannot get X image of `%s'; colors will not be freed",
8022 #endif /* HAVE_X_WINDOWS */
8024 /* Now that we have the pixmap, compute mask and transform the
8025 image if requested. */
8027 postprocess_image (f
, img
);
8031 #endif /* HAVE_GHOSTSCRIPT */
8034 /***********************************************************************
8036 ***********************************************************************/
8040 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8041 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8044 return valid_image_p (spec
) ? Qt
: Qnil
;
8048 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8053 if (valid_image_p (spec
))
8054 id
= lookup_image (SELECTED_FRAME (), spec
);
8057 return make_number (id
);
8060 #endif /* GLYPH_DEBUG != 0 */
8063 /***********************************************************************
8065 ***********************************************************************/
8068 /* Image types that rely on external libraries are loaded dynamically
8069 if the library is available. */
8070 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8071 define_image_type (image_type, init_lib_fn (libraries))
8073 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8074 define_image_type (image_type, 1)
8075 #endif /* HAVE_NTGUI */
8077 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8078 doc
: /* Initialize image library implementing image type TYPE.
8079 Return non-nil if TYPE is a supported image type.
8081 Image types pbm and xbm are prebuilt; other types are loaded here.
8082 Libraries to load are specified in alist LIBRARIES (usually, the value
8083 of `image-library-alist', which see). */)
8084 (Lisp_Object type
, Lisp_Object libraries
)
8088 /* Don't try to reload the library. */
8089 tested
= Fassq (type
, Vimage_type_cache
);
8091 return XCDR (tested
);
8093 #if defined (HAVE_XPM) || defined (HAVE_NS)
8094 if (EQ (type
, Qxpm
))
8095 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8098 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8099 if (EQ (type
, Qjpeg
))
8100 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8103 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8104 if (EQ (type
, Qtiff
))
8105 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8108 #if defined (HAVE_GIF) || defined (HAVE_NS)
8109 if (EQ (type
, Qgif
))
8110 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8113 #if defined (HAVE_PNG) || defined (HAVE_NS)
8114 if (EQ (type
, Qpng
))
8115 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8118 #if defined (HAVE_RSVG)
8119 if (EQ (type
, Qsvg
))
8120 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8123 #ifdef HAVE_GHOSTSCRIPT
8124 if (EQ (type
, Qpostscript
))
8125 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8128 /* If the type is not recognized, avoid testing it ever again. */
8129 CACHE_IMAGE_TYPE (type
, Qnil
);
8134 syms_of_image (void)
8136 /* Initialize this only once, since that's what we do with Vimage_types
8137 and they are supposed to be in sync. Initializing here gives correct
8138 operation on GNU/Linux of calling dump-emacs after loading some images. */
8141 /* Must be defined now becase we're going to update it below, while
8142 defining the supported image types. */
8143 DEFVAR_LISP ("image-types", &Vimage_types
,
8144 doc
: /* List of potentially supported image types.
8145 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8146 To check whether it is really supported, use `image-type-available-p'. */);
8147 Vimage_types
= Qnil
;
8149 DEFVAR_LISP ("image-library-alist", &Vimage_library_alist
,
8150 doc
: /* Alist of image types vs external libraries needed to display them.
8152 Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol
8153 representing a supported image type, and the rest are strings giving
8154 alternate filenames for the corresponding external libraries.
8156 Emacs tries to load the libraries in the order they appear on the
8157 list; if none is loaded, the running session of Emacs won't
8158 support the image type. Types 'pbm and 'xbm don't need to be
8159 listed; they are always supported. */);
8160 Vimage_library_alist
= Qnil
;
8161 Fput (intern_c_string ("image-library-alist"), Qrisky_local_variable
, Qt
);
8163 DEFVAR_LISP ("max-image-size", &Vmax_image_size
,
8164 doc
: /* Maximum size of images.
8165 Emacs will not load an image into memory if its pixel width or
8166 pixel height exceeds this limit.
8168 If the value is an integer, it directly specifies the maximum
8169 image height and width, measured in pixels. If it is a floating
8170 point number, it specifies the maximum image height and width
8171 as a ratio to the frame height and width. If the value is
8172 non-numeric, there is no explicit limit on the size of images. */);
8173 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8175 Vimage_type_cache
= Qnil
;
8176 staticpro (&Vimage_type_cache
);
8178 Qpbm
= intern_c_string ("pbm");
8180 ADD_IMAGE_TYPE (Qpbm
);
8182 Qxbm
= intern_c_string ("xbm");
8184 ADD_IMAGE_TYPE (Qxbm
);
8186 define_image_type (&xbm_type
, 1);
8187 define_image_type (&pbm_type
, 1);
8189 Qcount
= intern_c_string ("count");
8190 staticpro (&Qcount
);
8191 Qextension_data
= intern_c_string ("extension-data");
8192 staticpro (&Qextension_data
);
8194 QCascent
= intern_c_string (":ascent");
8195 staticpro (&QCascent
);
8196 QCmargin
= intern_c_string (":margin");
8197 staticpro (&QCmargin
);
8198 QCrelief
= intern_c_string (":relief");
8199 staticpro (&QCrelief
);
8200 QCconversion
= intern_c_string (":conversion");
8201 staticpro (&QCconversion
);
8202 QCcolor_symbols
= intern_c_string (":color-symbols");
8203 staticpro (&QCcolor_symbols
);
8204 QCheuristic_mask
= intern_c_string (":heuristic-mask");
8205 staticpro (&QCheuristic_mask
);
8206 QCindex
= intern_c_string (":index");
8207 staticpro (&QCindex
);
8208 QCmatrix
= intern_c_string (":matrix");
8209 staticpro (&QCmatrix
);
8210 QCcolor_adjustment
= intern_c_string (":color-adjustment");
8211 staticpro (&QCcolor_adjustment
);
8212 QCmask
= intern_c_string (":mask");
8213 staticpro (&QCmask
);
8215 Qlaplace
= intern_c_string ("laplace");
8216 staticpro (&Qlaplace
);
8217 Qemboss
= intern_c_string ("emboss");
8218 staticpro (&Qemboss
);
8219 Qedge_detection
= intern_c_string ("edge-detection");
8220 staticpro (&Qedge_detection
);
8221 Qheuristic
= intern_c_string ("heuristic");
8222 staticpro (&Qheuristic
);
8224 Qpostscript
= intern_c_string ("postscript");
8225 staticpro (&Qpostscript
);
8226 #ifdef HAVE_GHOSTSCRIPT
8227 ADD_IMAGE_TYPE (Qpostscript
);
8228 QCloader
= intern_c_string (":loader");
8229 staticpro (&QCloader
);
8230 QCbounding_box
= intern_c_string (":bounding-box");
8231 staticpro (&QCbounding_box
);
8232 QCpt_width
= intern_c_string (":pt-width");
8233 staticpro (&QCpt_width
);
8234 QCpt_height
= intern_c_string (":pt-height");
8235 staticpro (&QCpt_height
);
8236 #endif /* HAVE_GHOSTSCRIPT */
8238 #if defined (HAVE_XPM) || defined (HAVE_NS)
8239 Qxpm
= intern_c_string ("xpm");
8241 ADD_IMAGE_TYPE (Qxpm
);
8244 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8245 Qjpeg
= intern_c_string ("jpeg");
8247 ADD_IMAGE_TYPE (Qjpeg
);
8250 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8251 Qtiff
= intern_c_string ("tiff");
8253 ADD_IMAGE_TYPE (Qtiff
);
8256 #if defined (HAVE_GIF) || defined (HAVE_NS)
8257 Qgif
= intern_c_string ("gif");
8259 ADD_IMAGE_TYPE (Qgif
);
8262 #if defined (HAVE_PNG) || defined (HAVE_NS)
8263 Qpng
= intern_c_string ("png");
8265 ADD_IMAGE_TYPE (Qpng
);
8268 #if defined (HAVE_RSVG)
8269 Qsvg
= intern_c_string ("svg");
8271 ADD_IMAGE_TYPE (Qsvg
);
8273 /* Other libraries used directly by svg code. */
8274 Qgdk_pixbuf
= intern_c_string ("gdk-pixbuf");
8275 staticpro (&Qgdk_pixbuf
);
8276 Qglib
= intern_c_string ("glib");
8278 Qgobject
= intern_c_string ("gobject");
8279 staticpro (&Qgobject
);
8280 #endif /* HAVE_NTGUI */
8281 #endif /* HAVE_RSVG */
8283 defsubr (&Sinit_image_library
);
8284 defsubr (&Sclear_image_cache
);
8285 defsubr (&Simage_flush
);
8286 defsubr (&Simage_size
);
8287 defsubr (&Simage_mask_p
);
8288 defsubr (&Simage_metadata
);
8292 defsubr (&Slookup_image
);
8295 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8296 doc
: /* Non-nil means always draw a cross over disabled images.
8297 Disabled images are those having a `:conversion disabled' property.
8298 A cross is always drawn on black & white displays. */);
8299 cross_disabled_images
= 0;
8301 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8302 doc
: /* List of directories to search for window system bitmap files. */);
8303 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8305 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8306 doc
: /* Maximum time after which images are removed from the cache.
8307 When an image has not been displayed this many seconds, Emacs
8308 automatically removes it from the image cache. If the cache contains
8309 a large number of images, the actual eviction time may be shorter.
8310 The value can also be nil, meaning the cache is never cleared.
8312 The function `clear-image-cache' disregards this variable. */);
8313 Vimage_cache_eviction_delay
= make_number (300);
8321 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8322 (do not change this comment) */