1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992-2011 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #if defined HAVE_LIBPNG_PNG_H
27 # include <libpng/png.h>
35 /* This makes the fields of a Display accessible, in Xlib header files. */
37 #define XLIB_ILLEGAL_ACCESS
42 #include "dispextern.h"
43 #include "blockinput.h"
46 #include "character.h"
48 #include "termhooks.h"
53 #include <sys/types.h>
56 #define COLOR_TABLE_SUPPORT 1
58 typedef struct x_bitmap_record Bitmap_Record
;
59 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
60 #define NO_PIXMAP None
62 #define RGB_PIXEL_COLOR unsigned long
64 #define PIX_MASK_RETAIN 0
65 #define PIX_MASK_DRAW 1
66 #endif /* HAVE_X_WINDOWS */
73 /* W32_TODO : Color tables on W32. */
74 #undef COLOR_TABLE_SUPPORT
76 typedef struct w32_bitmap_record Bitmap_Record
;
77 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
80 #define RGB_PIXEL_COLOR COLORREF
82 #define PIX_MASK_RETAIN 0
83 #define PIX_MASK_DRAW 1
85 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
86 #define x_defined_color w32_defined_color
87 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
89 /* Functions from w32term.c that depend on XColor (so can't go in w32term.h
90 without modifying lots of files). */
91 extern void x_query_colors (struct frame
*f
, XColor
*colors
, int ncolors
);
92 extern void x_query_color (struct frame
*f
, XColor
*color
);
94 /* Version of libpng that we were compiled with, or -1 if no PNG
95 support was compiled in. This is tested by w32-win.el to correctly
96 set up the alist used to search for PNG libraries. */
97 Lisp_Object Qlibpng_version
;
98 #endif /* HAVE_NTGUI */
102 #include <sys/types.h>
103 #include <sys/stat.h>
105 #undef COLOR_TABLE_SUPPORT
107 typedef struct ns_bitmap_record Bitmap_Record
;
109 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
112 #define RGB_PIXEL_COLOR unsigned long
115 #define PIX_MASK_RETAIN 0
116 #define PIX_MASK_DRAW 1
118 #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual
119 #define x_defined_color(f, name, color_def, alloc) \
120 ns_defined_color (f, name, color_def, alloc, 0)
121 #define FRAME_X_SCREEN(f) 0
122 #define DefaultDepthOfScreen(screen) x_display_list->n_planes
126 /* The symbol `postscript' identifying images of this type. */
128 static Lisp_Object Qpostscript
;
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
);
140 static Lisp_Object
Finit_image_library (Lisp_Object
, Lisp_Object
);
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
, ptrdiff_t id
)
186 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
190 x_bitmap_width (FRAME_PTR f
, ptrdiff_t 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
, ptrdiff_t 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
, ptrdiff_t 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 if (min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof (Bitmap_Record
) / 2
236 < dpyinfo
->bitmaps_size
)
237 memory_full (SIZE_MAX
);
238 dpyinfo
->bitmaps_size
*= 2;
240 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
241 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
242 return ++dpyinfo
->bitmaps_last
;
245 /* Add one reference to the reference count of the bitmap with id ID. */
248 x_reference_bitmap (FRAME_PTR f
, int id
)
250 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
253 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
256 x_create_bitmap_from_data (struct frame
*f
, char *bits
, unsigned int width
, unsigned int height
)
258 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
261 #ifdef HAVE_X_WINDOWS
263 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
264 bits
, width
, height
);
267 #endif /* HAVE_X_WINDOWS */
271 bitmap
= CreateBitmap (width
, height
,
272 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
273 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
277 #endif /* HAVE_NTGUI */
280 void *bitmap
= ns_image_from_XBM (bits
, width
, height
);
285 id
= x_allocate_bitmap_record (f
);
288 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
289 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
292 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
293 dpyinfo
->bitmaps
[id
- 1].height
= height
;
294 dpyinfo
->bitmaps
[id
- 1].width
= width
;
295 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
297 #ifdef HAVE_X_WINDOWS
298 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
299 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
300 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
301 #endif /* HAVE_X_WINDOWS */
304 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
305 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
306 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
307 #endif /* HAVE_NTGUI */
312 /* Create bitmap from file FILE for frame F. */
315 x_create_bitmap_from_file (struct frame
*f
, Lisp_Object file
)
317 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
320 return -1; /* W32_TODO : bitmap support */
321 #endif /* HAVE_NTGUI */
325 void *bitmap
= ns_image_from_file (file
);
331 id
= x_allocate_bitmap_record (f
);
332 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
333 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
334 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
335 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
336 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width (bitmap
);
337 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height (bitmap
);
338 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
342 #ifdef HAVE_X_WINDOWS
343 unsigned int width
, height
;
345 int xhot
, yhot
, result
;
351 /* Look for an existing bitmap with the same name. */
352 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
354 if (dpyinfo
->bitmaps
[id
].refcount
355 && dpyinfo
->bitmaps
[id
].file
356 && !strcmp (dpyinfo
->bitmaps
[id
].file
, SSDATA (file
)))
358 ++dpyinfo
->bitmaps
[id
].refcount
;
363 /* Search bitmap-file-path for the file, if appropriate. */
364 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
369 filename
= SSDATA (found
);
371 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
372 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
373 if (result
!= BitmapSuccess
)
376 id
= x_allocate_bitmap_record (f
);
377 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
378 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
379 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
380 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
381 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
382 dpyinfo
->bitmaps
[id
- 1].height
= height
;
383 dpyinfo
->bitmaps
[id
- 1].width
= width
;
384 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SSDATA (file
));
387 #endif /* HAVE_X_WINDOWS */
393 free_bitmap_record (Display_Info
*dpyinfo
, Bitmap_Record
*bm
)
395 #ifdef HAVE_X_WINDOWS
396 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
398 XFreePixmap (dpyinfo
->display
, bm
->mask
);
399 #endif /* HAVE_X_WINDOWS */
402 DeleteObject (bm
->pixmap
);
403 #endif /* HAVE_NTGUI */
406 ns_release_object (bm
->img
);
416 /* Remove reference to bitmap with id number ID. */
419 x_destroy_bitmap (FRAME_PTR f
, ptrdiff_t id
)
421 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
425 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
427 if (--bm
->refcount
== 0)
430 free_bitmap_record (dpyinfo
, bm
);
436 /* Free all the bitmaps for the display specified by DPYINFO. */
439 x_destroy_all_bitmaps (Display_Info
*dpyinfo
)
442 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
444 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
445 if (bm
->refcount
> 0)
446 free_bitmap_record (dpyinfo
, bm
);
448 dpyinfo
->bitmaps_last
= 0;
452 #ifdef HAVE_X_WINDOWS
454 /* Useful functions defined in the section
455 `Image type independent image structures' below. */
457 static unsigned long four_corners_best (XImagePtr ximg
,
460 unsigned long height
);
462 static int x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
,
463 int depth
, XImagePtr
*ximg
,
466 static void x_destroy_x_image (XImagePtr ximg
);
469 /* Create a mask of a bitmap. Note is this not a perfect mask.
470 It's nicer with some borders in this context */
473 x_create_bitmap_mask (struct frame
*f
, ptrdiff_t id
)
476 XImagePtr ximg
, mask_img
;
477 unsigned long width
, height
;
480 unsigned long x
, y
, xp
, xm
, yp
, ym
;
483 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
488 pixmap
= x_bitmap_pixmap (f
, id
);
489 width
= x_bitmap_width (f
, id
);
490 height
= x_bitmap_height (f
, id
);
493 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
502 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
507 XDestroyImage (ximg
);
511 bg
= four_corners_best (ximg
, NULL
, width
, height
);
513 for (y
= 0; y
< ximg
->height
; ++y
)
515 for (x
= 0; x
< ximg
->width
; ++x
)
517 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
518 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
519 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
520 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
521 if (XGetPixel (ximg
, x
, y
) == bg
522 && XGetPixel (ximg
, x
, yp
) == bg
523 && XGetPixel (ximg
, x
, ym
) == bg
524 && XGetPixel (ximg
, xp
, y
) == bg
525 && XGetPixel (ximg
, xp
, yp
) == bg
526 && XGetPixel (ximg
, xp
, ym
) == bg
527 && XGetPixel (ximg
, xm
, y
) == bg
528 && XGetPixel (ximg
, xm
, yp
) == bg
529 && XGetPixel (ximg
, xm
, ym
) == bg
)
530 XPutPixel (mask_img
, x
, y
, 0);
532 XPutPixel (mask_img
, x
, y
, 1);
536 xassert (interrupt_input_blocked
);
537 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
538 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
540 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
542 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
543 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
545 XDestroyImage (ximg
);
546 x_destroy_x_image (mask_img
);
551 #endif /* HAVE_X_WINDOWS */
554 /***********************************************************************
556 ***********************************************************************/
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 /* The symbol `xbm' which is used as the type symbol for XBM images. */
565 static Lisp_Object Qxbm
;
569 Lisp_Object QCascent
, QCmargin
, QCrelief
;
570 Lisp_Object QCconversion
;
571 static Lisp_Object QCheuristic_mask
;
572 static Lisp_Object QCcolor_symbols
;
573 static Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
, QCgeometry
;
574 static Lisp_Object QCcrop
, QCrotation
;
578 static Lisp_Object Qcount
, Qextension_data
, Qdelay
;
579 static Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
581 /* Function prototypes. */
583 static Lisp_Object
define_image_type (struct image_type
*type
, int loaded
);
584 static struct image_type
*lookup_image_type (Lisp_Object symbol
);
585 static void image_error (const char *format
, Lisp_Object
, Lisp_Object
);
586 static void x_laplace (struct frame
*, struct image
*);
587 static void x_emboss (struct frame
*, struct image
*);
588 static int x_build_heuristic_mask (struct frame
*, struct image
*,
591 #define CACHE_IMAGE_TYPE(type, status) \
592 do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0)
594 #define CACHE_IMAGE_TYPE(type, status)
597 #define ADD_IMAGE_TYPE(type) \
598 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
600 /* Define a new image type from TYPE. This adds a copy of TYPE to
601 image_types and caches the loading status of TYPE. */
604 define_image_type (struct image_type
*type
, int loaded
)
612 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
613 The initialized data segment is read-only. */
614 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
615 memcpy (p
, type
, sizeof *p
);
616 p
->next
= image_types
;
621 CACHE_IMAGE_TYPE (*type
->type
, success
);
626 /* Look up image type SYMBOL, and return a pointer to its image_type
627 structure. Value is null if SYMBOL is not a known image type. */
629 static inline struct image_type
*
630 lookup_image_type (Lisp_Object symbol
)
632 struct image_type
*type
;
634 /* We must initialize the image-type if it hasn't been already. */
635 if (NILP (Finit_image_library (symbol
, Vdynamic_library_alist
)))
636 return 0; /* unimplemented */
638 for (type
= image_types
; type
; type
= type
->next
)
639 if (EQ (symbol
, *type
->type
))
646 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
647 valid image specification is a list whose car is the symbol
648 `image', and whose rest is a property list. The property list must
649 contain a value for key `:type'. That value must be the name of a
650 supported image type. The rest of the property list depends on the
654 valid_image_p (Lisp_Object object
)
662 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
663 if (EQ (XCAR (tem
), QCtype
))
666 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
668 struct image_type
*type
;
669 type
= lookup_image_type (XCAR (tem
));
671 valid_p
= type
->valid_p (object
);
682 /* Log error message with format string FORMAT and argument ARG.
683 Signaling an error, e.g. when an image cannot be loaded, is not a
684 good idea because this would interrupt redisplay, and the error
685 message display would lead to another redisplay. This function
686 therefore simply displays a message. */
689 image_error (const char *format
, Lisp_Object arg1
, Lisp_Object arg2
)
691 add_to_log (format
, arg1
, arg2
);
696 /***********************************************************************
698 ***********************************************************************/
700 enum image_value_type
702 IMAGE_DONT_CHECK_VALUE_TYPE
,
704 IMAGE_STRING_OR_NIL_VALUE
,
706 IMAGE_POSITIVE_INTEGER_VALUE
,
707 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
708 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
711 IMAGE_FUNCTION_VALUE
,
716 /* Structure used when parsing image specifications. */
720 /* Name of keyword. */
723 /* The type of value allowed. */
724 enum image_value_type type
;
726 /* Non-zero means key must be present. */
729 /* Used to recognize duplicate keywords in a property list. */
732 /* The value that was found. */
737 static int parse_image_spec (Lisp_Object
, struct image_keyword
*,
739 static Lisp_Object
image_spec_value (Lisp_Object
, Lisp_Object
, int *);
742 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
743 has the format (image KEYWORD VALUE ...). One of the keyword/
744 value pairs must be `:type TYPE'. KEYWORDS is a vector of
745 image_keywords structures of size NKEYWORDS describing other
746 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
749 parse_image_spec (Lisp_Object spec
, struct image_keyword
*keywords
,
750 int nkeywords
, Lisp_Object type
)
759 while (CONSP (plist
))
761 Lisp_Object key
, value
;
763 /* First element of a pair must be a symbol. */
765 plist
= XCDR (plist
);
769 /* There must follow a value. */
772 value
= XCAR (plist
);
773 plist
= XCDR (plist
);
775 /* Find key in KEYWORDS. Error if not found. */
776 for (i
= 0; i
< nkeywords
; ++i
)
777 if (strcmp (keywords
[i
].name
, SSDATA (SYMBOL_NAME (key
))) == 0)
783 /* Record that we recognized the keyword. If a keywords
784 was found more than once, it's an error. */
785 keywords
[i
].value
= value
;
788 if (keywords
[i
].count
> 1)
791 /* Check type of value against allowed type. */
792 switch (keywords
[i
].type
)
794 case IMAGE_STRING_VALUE
:
795 if (!STRINGP (value
))
799 case IMAGE_STRING_OR_NIL_VALUE
:
800 if (!STRINGP (value
) && !NILP (value
))
804 case IMAGE_SYMBOL_VALUE
:
805 if (!SYMBOLP (value
))
809 case IMAGE_POSITIVE_INTEGER_VALUE
:
810 if (!INTEGERP (value
) || XINT (value
) <= 0)
814 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
815 if (INTEGERP (value
) && XINT (value
) >= 0)
818 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
819 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
823 case IMAGE_ASCENT_VALUE
:
824 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
826 else if (INTEGERP (value
)
828 && XINT (value
) <= 100)
832 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
833 if (!INTEGERP (value
) || XINT (value
) < 0)
837 case IMAGE_DONT_CHECK_VALUE_TYPE
:
840 case IMAGE_FUNCTION_VALUE
:
841 value
= indirect_function (value
);
842 if (!NILP (Ffunctionp (value
)))
846 case IMAGE_NUMBER_VALUE
:
847 if (!INTEGERP (value
) && !FLOATP (value
))
851 case IMAGE_INTEGER_VALUE
:
852 if (!INTEGERP (value
))
856 case IMAGE_BOOL_VALUE
:
857 if (!NILP (value
) && !EQ (value
, Qt
))
866 if (EQ (key
, QCtype
) && !EQ (type
, value
))
870 /* Check that all mandatory fields are present. */
871 for (i
= 0; i
< nkeywords
; ++i
)
872 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
879 /* Return the value of KEY in image specification SPEC. Value is nil
880 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
881 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
884 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
888 xassert (valid_image_p (spec
));
890 for (tail
= XCDR (spec
);
891 CONSP (tail
) && CONSP (XCDR (tail
));
892 tail
= XCDR (XCDR (tail
)))
894 if (EQ (XCAR (tail
), key
))
898 return XCAR (XCDR (tail
));
908 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
909 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
910 PIXELS non-nil means return the size in pixels, otherwise return the
911 size in canonical character units.
912 FRAME is the frame on which the image will be displayed. FRAME nil
913 or omitted means use the selected frame. */)
914 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
919 if (valid_image_p (spec
))
921 struct frame
*f
= check_x_frame (frame
);
922 int id
= lookup_image (f
, spec
);
923 struct image
*img
= IMAGE_FROM_ID (f
, id
);
924 int width
= img
->width
+ 2 * img
->hmargin
;
925 int height
= img
->height
+ 2 * img
->vmargin
;
928 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
929 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
931 size
= Fcons (make_number (width
), make_number (height
));
934 error ("Invalid image specification");
940 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
941 doc
: /* Return t if image SPEC has a mask bitmap.
942 FRAME is the frame on which the image will be displayed. FRAME nil
943 or omitted means use the selected frame. */)
944 (Lisp_Object spec
, Lisp_Object frame
)
949 if (valid_image_p (spec
))
951 struct frame
*f
= check_x_frame (frame
);
952 int id
= lookup_image (f
, spec
);
953 struct image
*img
= IMAGE_FROM_ID (f
, id
);
958 error ("Invalid image specification");
963 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
964 doc
: /* Return metadata for image SPEC.
965 FRAME is the frame on which the image will be displayed. FRAME nil
966 or omitted means use the selected frame. */)
967 (Lisp_Object spec
, Lisp_Object frame
)
972 if (valid_image_p (spec
))
974 struct frame
*f
= check_x_frame (frame
);
975 int id
= lookup_image (f
, spec
);
976 struct image
*img
= IMAGE_FROM_ID (f
, id
);
977 ext
= img
->lisp_data
;
984 /***********************************************************************
985 Image type independent image structures
986 ***********************************************************************/
988 static void free_image (struct frame
*f
, struct image
*img
);
990 #define MAX_IMAGE_SIZE 6.0
991 /* Allocate and return a new image structure for image specification
992 SPEC. SPEC has a hash value of HASH. */
994 static struct image
*
995 make_image (Lisp_Object spec
, EMACS_UINT hash
)
997 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
998 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
1000 xassert (valid_image_p (spec
));
1001 memset (img
, 0, sizeof *img
);
1002 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
1003 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1004 xassert (img
->type
!= NULL
);
1006 img
->lisp_data
= Qnil
;
1007 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1009 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1014 /* Free image IMG which was used on frame F, including its resources. */
1017 free_image (struct frame
*f
, struct image
*img
)
1021 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1023 /* Remove IMG from the hash table of its cache. */
1025 img
->prev
->next
= img
->next
;
1027 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1030 img
->next
->prev
= img
->prev
;
1032 c
->images
[img
->id
] = NULL
;
1034 /* Free resources, then free IMG. */
1035 img
->type
->free (f
, img
);
1040 /* Return 1 if the given widths and heights are valid for display;
1041 otherwise, return 0. */
1044 check_image_size (struct frame
*f
, int width
, int height
)
1048 if (width
<= 0 || height
<= 0)
1051 if (INTEGERP (Vmax_image_size
))
1052 return (width
<= XINT (Vmax_image_size
)
1053 && height
<= XINT (Vmax_image_size
));
1054 else if (FLOATP (Vmax_image_size
))
1058 w
= FRAME_PIXEL_WIDTH (f
);
1059 h
= FRAME_PIXEL_HEIGHT (f
);
1062 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1063 return (width
<= XFLOAT_DATA (Vmax_image_size
) * w
1064 && height
<= XFLOAT_DATA (Vmax_image_size
) * h
);
1070 /* Prepare image IMG for display on frame F. Must be called before
1071 drawing an image. */
1074 prepare_image_for_display (struct frame
*f
, struct image
*img
)
1078 /* We're about to display IMG, so set its timestamp to `now'. */
1080 img
->timestamp
= EMACS_SECS (t
);
1082 /* If IMG doesn't have a pixmap yet, load it now, using the image
1083 type dependent loader function. */
1084 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1085 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1090 /* Value is the number of pixels for the ascent of image IMG when
1091 drawn in face FACE. */
1094 image_ascent (struct image
*img
, struct face
*face
, struct glyph_slice
*slice
)
1099 if (slice
->height
== img
->height
)
1100 height
= img
->height
+ img
->vmargin
;
1101 else if (slice
->y
== 0)
1102 height
= slice
->height
+ img
->vmargin
;
1104 height
= slice
->height
;
1106 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1111 /* W32 specific version. Why?. ++kfs */
1112 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1113 - FONT_BASE (face
->font
)) / 2;
1115 /* This expression is arranged so that if the image can't be
1116 exactly centered, it will be moved slightly up. This is
1117 because a typical font is `top-heavy' (due to the presence
1118 uppercase letters), so the image placement should err towards
1119 being top-heavy too. It also just generally looks better. */
1120 ascent
= (height
+ FONT_BASE(face
->font
)
1121 - FONT_DESCENT(face
->font
) + 1) / 2;
1122 #endif /* HAVE_NTGUI */
1125 ascent
= height
/ 2;
1128 ascent
= (int) (height
* img
->ascent
/ 100.0);
1134 /* Image background colors. */
1136 /* Find the "best" corner color of a bitmap.
1137 On W32, XIMG is assumed to a device context with the bitmap selected. */
1139 static RGB_PIXEL_COLOR
1140 four_corners_best (XImagePtr_or_DC ximg
, int *corners
,
1141 unsigned long width
, unsigned long height
)
1143 RGB_PIXEL_COLOR corner_pixels
[4], best
IF_LINT (= 0);
1146 if (corners
&& corners
[BOT_CORNER
] >= 0)
1148 /* Get the colors at the corner_pixels of ximg. */
1149 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1150 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1151 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1152 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1156 /* Get the colors at the corner_pixels of ximg. */
1157 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1158 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1159 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1160 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1162 /* Choose the most frequently found color as background. */
1163 for (i
= best_count
= 0; i
< 4; ++i
)
1167 for (j
= n
= 0; j
< 4; ++j
)
1168 if (corner_pixels
[i
] == corner_pixels
[j
])
1172 best
= corner_pixels
[i
], best_count
= n
;
1178 /* Portability macros */
1182 #define Destroy_Image(img_dc, prev) \
1183 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1185 #define Free_Pixmap(display, pixmap) \
1186 DeleteObject (pixmap)
1188 #elif defined (HAVE_NS)
1190 #define Destroy_Image(ximg, dummy) \
1191 ns_release_object (ximg)
1193 #define Free_Pixmap(display, pixmap) \
1194 ns_release_object (pixmap)
1198 #define Destroy_Image(ximg, dummy) \
1199 XDestroyImage (ximg)
1201 #define Free_Pixmap(display, pixmap) \
1202 XFreePixmap (display, pixmap)
1204 #endif /* !HAVE_NTGUI && !HAVE_NS */
1207 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1208 it is guessed heuristically. If non-zero, XIMG is an existing
1209 XImage object (or device context with the image selected on W32) to
1210 use for the heuristic. */
1213 image_background (struct image
*img
, struct frame
*f
, XImagePtr_or_DC ximg
)
1215 if (! img
->background_valid
)
1216 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1218 int free_ximg
= !ximg
;
1221 #endif /* HAVE_NTGUI */
1226 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1227 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1229 HDC frame_dc
= get_frame_dc (f
);
1230 ximg
= CreateCompatibleDC (frame_dc
);
1231 release_frame_dc (f
, frame_dc
);
1232 prev
= SelectObject (ximg
, img
->pixmap
);
1233 #endif /* !HAVE_NTGUI */
1236 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1239 Destroy_Image (ximg
, prev
);
1241 img
->background_valid
= 1;
1244 return img
->background
;
1247 /* Return the `background_transparent' field of IMG. If IMG doesn't
1248 have one yet, it is guessed heuristically. If non-zero, MASK is an
1249 existing XImage object to use for the heuristic. */
1252 image_background_transparent (struct image
*img
, struct frame
*f
, XImagePtr_or_DC mask
)
1254 if (! img
->background_transparent_valid
)
1255 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1259 int free_mask
= !mask
;
1262 #endif /* HAVE_NTGUI */
1267 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1268 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1270 HDC frame_dc
= get_frame_dc (f
);
1271 mask
= CreateCompatibleDC (frame_dc
);
1272 release_frame_dc (f
, frame_dc
);
1273 prev
= SelectObject (mask
, img
->mask
);
1274 #endif /* HAVE_NTGUI */
1277 img
->background_transparent
1278 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1281 Destroy_Image (mask
, prev
);
1284 img
->background_transparent
= 0;
1286 img
->background_transparent_valid
= 1;
1289 return img
->background_transparent
;
1293 /***********************************************************************
1294 Helper functions for X image types
1295 ***********************************************************************/
1297 static void x_clear_image_1 (struct frame
*, struct image
*, int,
1299 static void x_clear_image (struct frame
*f
, struct image
*img
);
1300 static unsigned long x_alloc_image_color (struct frame
*f
,
1302 Lisp_Object color_name
,
1303 unsigned long dflt
);
1306 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1307 free the pixmap if any. MASK_P non-zero means clear the mask
1308 pixmap if any. COLORS_P non-zero means free colors allocated for
1309 the image, if any. */
1312 x_clear_image_1 (struct frame
*f
, struct image
*img
, int pixmap_p
, int mask_p
,
1315 if (pixmap_p
&& img
->pixmap
)
1317 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1318 img
->pixmap
= NO_PIXMAP
;
1319 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1320 img
->background_valid
= 0;
1323 if (mask_p
&& img
->mask
)
1325 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1326 img
->mask
= NO_PIXMAP
;
1327 img
->background_transparent_valid
= 0;
1330 if (colors_p
&& img
->ncolors
)
1332 /* W32_TODO: color table support. */
1333 #ifdef HAVE_X_WINDOWS
1334 x_free_colors (f
, img
->colors
, img
->ncolors
);
1335 #endif /* HAVE_X_WINDOWS */
1336 xfree (img
->colors
);
1343 /* Free X resources of image IMG which is used on frame F. */
1346 x_clear_image (struct frame
*f
, struct image
*img
)
1349 x_clear_image_1 (f
, img
, 1, 1, 1);
1354 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1355 cannot be allocated, use DFLT. Add a newly allocated color to
1356 IMG->colors, so that it can be freed again. Value is the pixel
1359 static unsigned long
1360 x_alloc_image_color (struct frame
*f
, struct image
*img
, Lisp_Object color_name
,
1364 unsigned long result
;
1366 xassert (STRINGP (color_name
));
1368 if (x_defined_color (f
, SSDATA (color_name
), &color
, 1)
1369 && img
->ncolors
< min (min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof *img
->colors
,
1372 /* This isn't called frequently so we get away with simply
1373 reallocating the color vector to the needed size, here. */
1376 (unsigned long *) xrealloc (img
->colors
,
1377 img
->ncolors
* sizeof *img
->colors
);
1378 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1379 result
= color
.pixel
;
1389 /***********************************************************************
1391 ***********************************************************************/
1393 static void cache_image (struct frame
*f
, struct image
*img
);
1394 static void postprocess_image (struct frame
*, struct image
*);
1396 /* Return a new, initialized image cache that is allocated from the
1397 heap. Call free_image_cache to free an image cache. */
1399 struct image_cache
*
1400 make_image_cache (void)
1402 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1405 memset (c
, 0, sizeof *c
);
1407 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1408 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1409 c
->buckets
= (struct image
**) xmalloc (size
);
1410 memset (c
->buckets
, 0, size
);
1415 /* Find an image matching SPEC in the cache, and return it. If no
1416 image is found, return NULL. */
1417 static struct image
*
1418 search_image_cache (struct frame
*f
, Lisp_Object spec
, EMACS_UINT hash
)
1421 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1422 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1424 if (!c
) return NULL
;
1426 /* If the image spec does not specify a background color, the cached
1427 image must have the same background color as the current frame.
1428 The foreground color must also match, for the sake of monochrome
1431 In fact, we could ignore the foreground color matching condition
1432 for color images, or if the image spec specifies :foreground;
1433 similarly we could ignore the background color matching condition
1434 for formats that don't use transparency (such as jpeg), or if the
1435 image spec specifies :background. However, the extra memory
1436 usage is probably negligible in practice, so we don't bother. */
1438 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1439 if (img
->hash
== hash
1440 && !NILP (Fequal (img
->spec
, spec
))
1441 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1442 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1448 /* Search frame F for an image with spec SPEC, and free it. */
1451 uncache_image (struct frame
*f
, Lisp_Object spec
)
1453 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1456 free_image (f
, img
);
1457 /* As display glyphs may still be referring to the image ID, we
1458 must garbage the frame (Bug#6426). */
1459 SET_FRAME_GARBAGED (f
);
1464 /* Free image cache of frame F. Be aware that X frames share images
1468 free_image_cache (struct frame
*f
)
1470 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1475 /* Cache should not be referenced by any frame when freed. */
1476 xassert (c
->refcount
== 0);
1478 for (i
= 0; i
< c
->used
; ++i
)
1479 free_image (f
, c
->images
[i
]);
1483 FRAME_IMAGE_CACHE (f
) = NULL
;
1488 /* Clear image cache of frame F. FILTER=t means free all images.
1489 FILTER=nil means clear only images that haven't been
1490 displayed for some time.
1491 Else, only free the images which have FILTER in their `dependencies'.
1492 Should be called from time to time to reduce the number of loaded images.
1493 If image-cache-eviction-delay is non-nil, this frees images in the cache
1494 which weren't displayed for at least that many seconds. */
1497 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1499 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1505 /* Block input so that we won't be interrupted by a SIGIO
1506 while being in an inconsistent state. */
1511 /* Filter image cache. */
1512 for (i
= 0; i
< c
->used
; ++i
)
1514 struct image
*img
= c
->images
[i
];
1515 if (img
&& (EQ (Qt
, filter
)
1516 || !NILP (Fmember (filter
, img
->dependencies
))))
1518 free_image (f
, img
);
1523 else if (INTEGERP (Vimage_cache_eviction_delay
))
1525 /* Free cache based on timestamp. */
1528 int delay
, nimages
= 0;
1530 for (i
= 0; i
< c
->used
; ++i
)
1534 /* If the number of cached images has grown unusually large,
1535 decrease the cache eviction delay (Bug#6230). */
1536 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1538 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1541 old
= EMACS_SECS (t
) - delay
;
1543 for (i
= 0; i
< c
->used
; ++i
)
1545 struct image
*img
= c
->images
[i
];
1546 if (img
&& img
->timestamp
< old
)
1548 free_image (f
, img
);
1554 /* We may be clearing the image cache because, for example,
1555 Emacs was iconified for a longer period of time. In that
1556 case, current matrices may still contain references to
1557 images freed above. So, clear these matrices. */
1560 Lisp_Object tail
, frame
;
1562 FOR_EACH_FRAME (tail
, frame
)
1564 struct frame
*fr
= XFRAME (frame
);
1565 if (FRAME_IMAGE_CACHE (fr
) == c
)
1566 clear_current_matrices (fr
);
1569 ++windows_or_buffers_changed
;
1577 clear_image_caches (Lisp_Object filter
)
1579 /* FIXME: We want to do
1580 * struct terminal *t;
1581 * for (t = terminal_list; t; t = t->next_terminal)
1582 * clear_image_cache (t, filter); */
1583 Lisp_Object tail
, frame
;
1584 FOR_EACH_FRAME (tail
, frame
)
1585 if (FRAME_WINDOW_P (XFRAME (frame
)))
1586 clear_image_cache (XFRAME (frame
), filter
);
1589 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1591 doc
: /* Clear the image cache.
1592 FILTER nil or a frame means clear all images in the selected frame.
1593 FILTER t means clear the image caches of all frames.
1594 Anything else, means only clear those images which refer to FILTER,
1595 which is then usually a filename. */)
1596 (Lisp_Object filter
)
1598 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1599 clear_image_caches (filter
);
1601 clear_image_cache (check_x_frame (filter
), Qt
);
1607 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1609 doc
: /* Fush the image with specification SPEC on frame FRAME.
1610 This removes the image from the Emacs image cache. If SPEC specifies
1611 an image file, the next redisplay of this image will read from the
1612 current contents of that file.
1614 FRAME nil or omitted means use the selected frame.
1615 FRAME t means refresh the image on all frames. */)
1616 (Lisp_Object spec
, Lisp_Object frame
)
1618 if (!valid_image_p (spec
))
1619 error ("Invalid image specification");
1624 FOR_EACH_FRAME (tail
, frame
)
1626 struct frame
*f
= XFRAME (frame
);
1627 if (FRAME_WINDOW_P (f
))
1628 uncache_image (f
, spec
);
1632 uncache_image (check_x_frame (frame
), spec
);
1638 /* Compute masks and transform image IMG on frame F, as specified
1639 by the image's specification, */
1642 postprocess_image (struct frame
*f
, struct image
*img
)
1644 /* Manipulation of the image's mask. */
1647 Lisp_Object conversion
, spec
;
1652 /* `:heuristic-mask t'
1654 means build a mask heuristically.
1655 `:heuristic-mask (R G B)'
1656 `:mask (heuristic (R G B))'
1657 means build a mask from color (R G B) in the
1660 means remove a mask, if any. */
1662 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1664 x_build_heuristic_mask (f
, img
, mask
);
1669 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1671 if (EQ (mask
, Qheuristic
))
1672 x_build_heuristic_mask (f
, img
, Qt
);
1673 else if (CONSP (mask
)
1674 && EQ (XCAR (mask
), Qheuristic
))
1676 if (CONSP (XCDR (mask
)))
1677 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1679 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1681 else if (NILP (mask
) && found_p
&& img
->mask
)
1683 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1684 img
->mask
= NO_PIXMAP
;
1689 /* Should we apply an image transformation algorithm? */
1690 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1691 if (EQ (conversion
, Qdisabled
))
1692 x_disable_image (f
, img
);
1693 else if (EQ (conversion
, Qlaplace
))
1695 else if (EQ (conversion
, Qemboss
))
1697 else if (CONSP (conversion
)
1698 && EQ (XCAR (conversion
), Qedge_detection
))
1701 tem
= XCDR (conversion
);
1703 x_edge_detection (f
, img
,
1704 Fplist_get (tem
, QCmatrix
),
1705 Fplist_get (tem
, QCcolor_adjustment
));
1711 /* Return the id of image with Lisp specification SPEC on frame F.
1712 SPEC must be a valid Lisp image specification (see valid_image_p). */
1715 lookup_image (struct frame
*f
, Lisp_Object spec
)
1721 /* F must be a window-system frame, and SPEC must be a valid image
1723 xassert (FRAME_WINDOW_P (f
));
1724 xassert (valid_image_p (spec
));
1726 /* Look up SPEC in the hash table of the image cache. */
1727 hash
= sxhash (spec
, 0);
1728 img
= search_image_cache (f
, spec
, hash
);
1729 if (img
&& img
->load_failed_p
)
1731 free_image (f
, img
);
1735 /* If not found, create a new image and cache it. */
1739 img
= make_image (spec
, hash
);
1740 cache_image (f
, img
);
1741 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1742 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1743 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1745 /* If we can't load the image, and we don't have a width and
1746 height, use some arbitrary width and height so that we can
1747 draw a rectangle for it. */
1748 if (img
->load_failed_p
)
1752 value
= image_spec_value (spec
, QCwidth
, NULL
);
1753 img
->width
= (INTEGERP (value
)
1754 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1755 value
= image_spec_value (spec
, QCheight
, NULL
);
1756 img
->height
= (INTEGERP (value
)
1757 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1761 /* Handle image type independent image attributes
1762 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1763 `:background COLOR'. */
1764 Lisp_Object ascent
, margin
, relief
, bg
;
1766 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1767 if (INTEGERP (ascent
))
1768 img
->ascent
= XFASTINT (ascent
);
1769 else if (EQ (ascent
, Qcenter
))
1770 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1772 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1773 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1774 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1775 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1776 && INTEGERP (XCDR (margin
)))
1778 if (XINT (XCAR (margin
)) > 0)
1779 img
->hmargin
= XFASTINT (XCAR (margin
));
1780 if (XINT (XCDR (margin
)) > 0)
1781 img
->vmargin
= XFASTINT (XCDR (margin
));
1784 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1785 if (INTEGERP (relief
))
1787 img
->relief
= XINT (relief
);
1788 img
->hmargin
+= eabs (img
->relief
);
1789 img
->vmargin
+= eabs (img
->relief
);
1792 if (! img
->background_valid
)
1794 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1798 = x_alloc_image_color (f
, img
, bg
,
1799 FRAME_BACKGROUND_PIXEL (f
));
1800 img
->background_valid
= 1;
1804 /* Do image transformations and compute masks, unless we
1805 don't have the image yet. */
1806 if (!EQ (*img
->type
->type
, Qpostscript
))
1807 postprocess_image (f
, img
);
1813 /* We're using IMG, so set its timestamp to `now'. */
1814 EMACS_GET_TIME (now
);
1815 img
->timestamp
= EMACS_SECS (now
);
1817 /* Value is the image id. */
1822 /* Cache image IMG in the image cache of frame F. */
1825 cache_image (struct frame
*f
, struct image
*img
)
1827 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1830 /* Find a free slot in c->images. */
1831 for (i
= 0; i
< c
->used
; ++i
)
1832 if (c
->images
[i
] == NULL
)
1835 /* If no free slot found, maybe enlarge c->images. */
1836 if (i
== c
->used
&& c
->used
== c
->size
)
1838 if (min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof *c
->images
/ 2 < c
->size
)
1839 memory_full (SIZE_MAX
);
1841 c
->images
= (struct image
**) xrealloc (c
->images
,
1842 c
->size
* sizeof *c
->images
);
1845 /* Add IMG to c->images, and assign IMG an id. */
1851 /* Add IMG to the cache's hash table. */
1852 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1853 img
->next
= c
->buckets
[i
];
1855 img
->next
->prev
= img
;
1857 c
->buckets
[i
] = img
;
1861 /* Call FN on every image in the image cache of frame F. Used to mark
1862 Lisp Objects in the image cache. */
1864 /* Mark Lisp objects in image IMG. */
1867 mark_image (struct image
*img
)
1869 mark_object (img
->spec
);
1870 mark_object (img
->dependencies
);
1872 if (!NILP (img
->lisp_data
))
1873 mark_object (img
->lisp_data
);
1878 mark_image_cache (struct image_cache
*c
)
1883 for (i
= 0; i
< c
->used
; ++i
)
1885 mark_image (c
->images
[i
]);
1891 /***********************************************************************
1892 X / NS / W32 support code
1893 ***********************************************************************/
1897 /* Macro for defining functions that will be loaded from image DLLs. */
1898 #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args
1900 /* Macro for loading those image functions from the library. */
1901 #define LOAD_IMGLIB_FN(lib,func) { \
1902 fn_##func = (void *) GetProcAddress (lib, #func); \
1903 if (!fn_##func) return 0; \
1906 #endif /* HAVE_NTGUI */
1908 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1909 XImagePtr
*, Pixmap
*);
1910 static void x_destroy_x_image (XImagePtr
);
1911 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1914 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1915 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1916 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1917 via xmalloc. Print error messages via image_error if an error
1918 occurs. Value is non-zero if successful.
1920 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1921 should indicate the bit depth of the image. */
1924 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1925 XImagePtr
*ximg
, Pixmap
*pixmap
)
1927 #ifdef HAVE_X_WINDOWS
1928 Display
*display
= FRAME_X_DISPLAY (f
);
1929 Window window
= FRAME_X_WINDOW (f
);
1930 Screen
*screen
= FRAME_X_SCREEN (f
);
1932 xassert (interrupt_input_blocked
);
1935 depth
= DefaultDepthOfScreen (screen
);
1936 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1937 depth
, ZPixmap
, 0, NULL
, width
, height
,
1938 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1941 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1945 /* Allocate image raster. */
1946 if (min (PTRDIFF_MAX
, SIZE_MAX
) / height
< (*ximg
)->bytes_per_line
)
1947 memory_full (SIZE_MAX
);
1948 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1950 /* Allocate a pixmap of the same size. */
1951 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1952 if (*pixmap
== NO_PIXMAP
)
1954 x_destroy_x_image (*ximg
);
1956 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1961 #endif /* HAVE_X_WINDOWS */
1965 BITMAPINFOHEADER
*header
;
1967 int scanline_width_bits
;
1969 int palette_colors
= 0;
1974 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1975 && depth
!= 16 && depth
!= 24 && depth
!= 32)
1977 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
1981 scanline_width_bits
= width
* depth
;
1982 remainder
= scanline_width_bits
% 32;
1985 scanline_width_bits
+= 32 - remainder
;
1987 /* Bitmaps with a depth less than 16 need a palette. */
1988 /* BITMAPINFO structure already contains the first RGBQUAD. */
1990 palette_colors
= 1 << depth
- 1;
1992 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
1994 header
= &(*ximg
)->info
.bmiHeader
;
1995 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
1996 header
->biSize
= sizeof (*header
);
1997 header
->biWidth
= width
;
1998 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
1999 header
->biPlanes
= 1;
2000 header
->biBitCount
= depth
;
2001 header
->biCompression
= BI_RGB
;
2002 header
->biClrUsed
= palette_colors
;
2004 /* TODO: fill in palette. */
2007 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2008 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2009 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2010 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2011 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2012 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2013 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2014 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2017 hdc
= get_frame_dc (f
);
2019 /* Create a DIBSection and raster array for the bitmap,
2020 and store its handle in *pixmap. */
2021 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2022 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2023 /* casting avoids a GCC warning */
2024 (void **)&((*ximg
)->data
), NULL
, 0);
2026 /* Realize display palette and garbage all frames. */
2027 release_frame_dc (f
, hdc
);
2029 if (*pixmap
== NULL
)
2031 DWORD err
= GetLastError ();
2032 Lisp_Object errcode
;
2033 /* All system errors are < 10000, so the following is safe. */
2034 XSETINT (errcode
, (int) err
);
2035 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2036 x_destroy_x_image (*ximg
);
2042 #endif /* HAVE_NTGUI */
2045 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2049 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2058 /* Destroy XImage XIMG. Free XIMG->data. */
2061 x_destroy_x_image (XImagePtr ximg
)
2063 xassert (interrupt_input_blocked
);
2066 #ifdef HAVE_X_WINDOWS
2069 XDestroyImage (ximg
);
2070 #endif /* HAVE_X_WINDOWS */
2072 /* Data will be freed by DestroyObject. */
2075 #endif /* HAVE_NTGUI */
2077 ns_release_object (ximg
);
2078 #endif /* HAVE_NS */
2083 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2084 are width and height of both the image and pixmap. */
2087 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2089 #ifdef HAVE_X_WINDOWS
2092 xassert (interrupt_input_blocked
);
2093 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2094 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2095 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2096 #endif /* HAVE_X_WINDOWS */
2099 #if 0 /* I don't think this is necessary looking at where it is used. */
2100 HDC hdc
= get_frame_dc (f
);
2101 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2102 release_frame_dc (f
, hdc
);
2104 #endif /* HAVE_NTGUI */
2107 xassert (ximg
== pixmap
);
2108 ns_retain_object (ximg
);
2113 /***********************************************************************
2115 ***********************************************************************/
2117 /* Find image file FILE. Look in data-directory/images, then
2118 x-bitmap-file-path. Value is the encoded full name of the file
2119 found, or nil if not found. */
2122 x_find_image_file (Lisp_Object file
)
2124 Lisp_Object file_found
, search_path
;
2127 /* TODO I think this should use something like image-load-path
2128 instead. Unfortunately, that can contain non-string elements. */
2129 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2131 Vx_bitmap_file_path
);
2133 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2134 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2140 file_found
= ENCODE_FILE (file_found
);
2148 /* Read FILE into memory. Value is a pointer to a buffer allocated
2149 with xmalloc holding FILE's contents. Value is null if an error
2150 occurred. *SIZE is set to the size of the file. */
2152 static unsigned char *
2153 slurp_file (char *file
, ptrdiff_t *size
)
2156 unsigned char *buf
= NULL
;
2159 if (stat (file
, &st
) == 0
2160 && (fp
= fopen (file
, "rb")) != NULL
2161 && 0 <= st
.st_size
&& st
.st_size
<= min (PTRDIFF_MAX
, SIZE_MAX
)
2162 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2163 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2184 /***********************************************************************
2186 ***********************************************************************/
2188 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2189 static int xbm_load (struct frame
*f
, struct image
*img
);
2190 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2191 unsigned char *, unsigned char *);
2192 static int xbm_image_p (Lisp_Object object
);
2193 static int xbm_read_bitmap_data (struct frame
*f
,
2194 unsigned char *, unsigned char *,
2195 int *, int *, char **, int);
2196 static int xbm_file_p (Lisp_Object
);
2199 /* Indices of image specification fields in xbm_format, below. */
2201 enum xbm_keyword_index
2219 /* Vector of image_keyword structures describing the format
2220 of valid XBM image specifications. */
2222 static const struct image_keyword xbm_format
[XBM_LAST
] =
2224 {":type", IMAGE_SYMBOL_VALUE
, 1},
2225 {":file", IMAGE_STRING_VALUE
, 0},
2226 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2227 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2228 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2229 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2230 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2231 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2232 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2233 {":relief", IMAGE_INTEGER_VALUE
, 0},
2234 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2235 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2236 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2239 /* Structure describing the image type XBM. */
2241 static struct image_type xbm_type
=
2250 /* Tokens returned from xbm_scan. */
2259 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2260 A valid specification is a list starting with the symbol `image'
2261 The rest of the list is a property list which must contain an
2264 If the specification specifies a file to load, it must contain
2265 an entry `:file FILENAME' where FILENAME is a string.
2267 If the specification is for a bitmap loaded from memory it must
2268 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2269 WIDTH and HEIGHT are integers > 0. DATA may be:
2271 1. a string large enough to hold the bitmap data, i.e. it must
2272 have a size >= (WIDTH + 7) / 8 * HEIGHT
2274 2. a bool-vector of size >= WIDTH * HEIGHT
2276 3. a vector of strings or bool-vectors, one for each line of the
2279 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2280 may not be specified in this case because they are defined in the
2283 Both the file and data forms may contain the additional entries
2284 `:background COLOR' and `:foreground COLOR'. If not present,
2285 foreground and background of the frame on which the image is
2286 displayed is used. */
2289 xbm_image_p (Lisp_Object object
)
2291 struct image_keyword kw
[XBM_LAST
];
2293 memcpy (kw
, xbm_format
, sizeof kw
);
2294 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2297 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2299 if (kw
[XBM_FILE
].count
)
2301 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2304 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2306 /* In-memory XBM file. */
2307 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2313 EMACS_INT width
, height
;
2315 /* Entries for `:width', `:height' and `:data' must be present. */
2316 if (!kw
[XBM_WIDTH
].count
2317 || !kw
[XBM_HEIGHT
].count
2318 || !kw
[XBM_DATA
].count
)
2321 data
= kw
[XBM_DATA
].value
;
2322 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2323 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2325 /* Check type of data, and width and height against contents of
2331 /* Number of elements of the vector must be >= height. */
2332 if (ASIZE (data
) < height
)
2335 /* Each string or bool-vector in data must be large enough
2336 for one line of the image. */
2337 for (i
= 0; i
< height
; ++i
)
2339 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2344 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2347 else if (BOOL_VECTOR_P (elt
))
2349 if (XBOOL_VECTOR (elt
)->size
< width
)
2356 else if (STRINGP (data
))
2359 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2362 else if (BOOL_VECTOR_P (data
))
2364 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2375 /* Scan a bitmap file. FP is the stream to read from. Value is
2376 either an enumerator from enum xbm_token, or a character for a
2377 single-character token, or 0 at end of file. If scanning an
2378 identifier, store the lexeme of the identifier in SVAL. If
2379 scanning a number, store its value in *IVAL. */
2382 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2388 /* Skip white space. */
2389 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2394 else if (isdigit (c
))
2396 int value
= 0, digit
;
2398 if (c
== '0' && *s
< end
)
2401 if (c
== 'x' || c
== 'X')
2408 else if (c
>= 'a' && c
<= 'f')
2409 digit
= c
- 'a' + 10;
2410 else if (c
>= 'A' && c
<= 'F')
2411 digit
= c
- 'A' + 10;
2414 value
= 16 * value
+ digit
;
2417 else if (isdigit (c
))
2421 && (c
= *(*s
)++, isdigit (c
)))
2422 value
= 8 * value
+ c
- '0';
2429 && (c
= *(*s
)++, isdigit (c
)))
2430 value
= 10 * value
+ c
- '0';
2438 else if (isalpha (c
) || c
== '_')
2442 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2449 else if (c
== '/' && **s
== '*')
2451 /* C-style comment. */
2453 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2467 /* Create a Windows bitmap from X bitmap data. */
2469 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2471 static unsigned char swap_nibble
[16]
2472 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2473 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2474 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2475 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2477 unsigned char *bits
, *p
;
2480 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2481 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2482 bits
= (unsigned char *) alloca (height
* w2
);
2483 memset (bits
, 0, height
* w2
);
2484 for (i
= 0; i
< height
; i
++)
2487 for (j
= 0; j
< w1
; j
++)
2489 /* Bitswap XBM bytes to match how Windows does things. */
2490 unsigned char c
= *data
++;
2491 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2492 | (swap_nibble
[(c
>>4) & 0xf]));
2495 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2501 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2502 COLORREF foreground
, COLORREF background
)
2504 HDC hdc
, old_img_dc
, new_img_dc
;
2505 HGDIOBJ old_prev
, new_prev
;
2508 hdc
= get_frame_dc (f
);
2509 old_img_dc
= CreateCompatibleDC (hdc
);
2510 new_img_dc
= CreateCompatibleDC (hdc
);
2511 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2512 release_frame_dc (f
, hdc
);
2513 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2514 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2515 /* Windows convention for mono bitmaps is black = background,
2516 white = foreground. */
2517 SetTextColor (new_img_dc
, background
);
2518 SetBkColor (new_img_dc
, foreground
);
2520 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2523 SelectObject (old_img_dc
, old_prev
);
2524 SelectObject (new_img_dc
, new_prev
);
2525 DeleteDC (old_img_dc
);
2526 DeleteDC (new_img_dc
);
2527 DeleteObject (img
->pixmap
);
2528 if (new_pixmap
== 0)
2529 fprintf (stderr
, "Failed to convert image to color.\n");
2531 img
->pixmap
= new_pixmap
;
2534 #define XBM_BIT_SHUFFLE(b) (~(b))
2538 #define XBM_BIT_SHUFFLE(b) (b)
2540 #endif /* HAVE_NTGUI */
2544 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2545 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2546 int non_default_colors
)
2550 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2552 /* If colors were specified, transfer the bitmap to a color one. */
2553 if (non_default_colors
)
2554 convert_mono_to_color_image (f
, img
, fg
, bg
);
2556 #elif defined (HAVE_NS)
2557 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2561 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2564 img
->width
, img
->height
,
2566 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2567 #endif /* !HAVE_NTGUI && !HAVE_NS */
2572 /* Replacement for XReadBitmapFileData which isn't available under old
2573 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2574 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2575 the image. Return in *DATA the bitmap data allocated with xmalloc.
2576 Value is non-zero if successful. DATA null means just test if
2577 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2578 is non-zero, inhibit the call to image_error when the image size is
2579 invalid (the bitmap remains unread). */
2582 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2583 int *width
, int *height
, char **data
,
2584 int inhibit_image_error
)
2586 unsigned char *s
= contents
;
2587 char buffer
[BUFSIZ
];
2591 ptrdiff_t i
, nbytes
;
2597 LA1 = xbm_scan (&s, end, buffer, &value)
2599 #define expect(TOKEN) \
2600 if (LA1 != (TOKEN)) \
2605 #define expect_ident(IDENT) \
2606 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2611 *width
= *height
= -1;
2614 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2616 /* Parse defines for width, height and hot-spots. */
2620 expect_ident ("define");
2621 expect (XBM_TK_IDENT
);
2623 if (LA1
== XBM_TK_NUMBER
)
2625 char *q
= strrchr (buffer
, '_');
2626 q
= q
? q
+ 1 : buffer
;
2627 if (strcmp (q
, "width") == 0)
2629 else if (strcmp (q
, "height") == 0)
2632 expect (XBM_TK_NUMBER
);
2635 if (!check_image_size (f
, *width
, *height
))
2637 if (!inhibit_image_error
)
2638 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2641 else if (data
== NULL
)
2644 /* Parse bits. Must start with `static'. */
2645 expect_ident ("static");
2646 if (LA1
== XBM_TK_IDENT
)
2648 if (strcmp (buffer
, "unsigned") == 0)
2651 expect_ident ("char");
2653 else if (strcmp (buffer
, "short") == 0)
2657 if (*width
% 16 && *width
% 16 < 9)
2660 else if (strcmp (buffer
, "char") == 0)
2668 expect (XBM_TK_IDENT
);
2674 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2675 if (min (PTRDIFF_MAX
- 1, SIZE_MAX
) / *height
< bytes_per_line
)
2676 memory_full (SIZE_MAX
);
2677 nbytes
= bytes_per_line
* *height
;
2678 p
= *data
= (char *) xmalloc (nbytes
);
2682 for (i
= 0; i
< nbytes
; i
+= 2)
2685 expect (XBM_TK_NUMBER
);
2687 *p
++ = XBM_BIT_SHUFFLE (val
);
2688 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2689 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2691 if (LA1
== ',' || LA1
== '}')
2699 for (i
= 0; i
< nbytes
; ++i
)
2702 expect (XBM_TK_NUMBER
);
2704 *p
++ = XBM_BIT_SHUFFLE (val
);
2706 if (LA1
== ',' || LA1
== '}')
2731 /* Load XBM image IMG which will be displayed on frame F from buffer
2732 CONTENTS. END is the end of the buffer. Value is non-zero if
2736 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2743 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2747 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2748 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2749 int non_default_colors
= 0;
2752 xassert (img
->width
> 0 && img
->height
> 0);
2754 /* Get foreground and background colors, maybe allocate colors. */
2755 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2758 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2759 non_default_colors
= 1;
2761 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2764 background
= x_alloc_image_color (f
, img
, value
, background
);
2765 img
->background
= background
;
2766 img
->background_valid
= 1;
2767 non_default_colors
= 1;
2770 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2771 foreground
, background
,
2772 non_default_colors
);
2775 if (img
->pixmap
== NO_PIXMAP
)
2777 x_clear_image (f
, img
);
2778 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2784 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2790 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2793 xbm_file_p (Lisp_Object data
)
2796 return (STRINGP (data
)
2797 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2798 (SDATA (data
) + SBYTES (data
)),
2803 /* Fill image IMG which is used on frame F with pixmap data. Value is
2804 non-zero if successful. */
2807 xbm_load (struct frame
*f
, struct image
*img
)
2810 Lisp_Object file_name
;
2812 xassert (xbm_image_p (img
->spec
));
2814 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2815 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2816 if (STRINGP (file_name
))
2819 unsigned char *contents
;
2822 file
= x_find_image_file (file_name
);
2823 if (!STRINGP (file
))
2825 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2829 contents
= slurp_file (SSDATA (file
), &size
);
2830 if (contents
== NULL
)
2832 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2836 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2841 struct image_keyword fmt
[XBM_LAST
];
2843 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2844 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2845 int non_default_colors
= 0;
2848 int in_memory_file_p
= 0;
2850 /* See if data looks like an in-memory XBM file. */
2851 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2852 in_memory_file_p
= xbm_file_p (data
);
2854 /* Parse the image specification. */
2855 memcpy (fmt
, xbm_format
, sizeof fmt
);
2856 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2860 /* Get specified width, and height. */
2861 if (!in_memory_file_p
)
2863 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2864 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2865 xassert (img
->width
> 0 && img
->height
> 0);
2868 /* Get foreground and background colors, maybe allocate colors. */
2869 if (fmt
[XBM_FOREGROUND
].count
2870 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2872 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2874 non_default_colors
= 1;
2877 if (fmt
[XBM_BACKGROUND
].count
2878 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2880 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2882 non_default_colors
= 1;
2885 if (in_memory_file_p
)
2886 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2895 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2897 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2898 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2900 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2902 memcpy (p
, SDATA (line
), nbytes
);
2904 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2907 else if (STRINGP (data
))
2908 bits
= SSDATA (data
);
2910 bits
= (char *) XBOOL_VECTOR (data
)->data
;
2916 /* Windows mono bitmaps are reversed compared with X. */
2917 invertedBits
= bits
;
2918 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2920 bits
= (char *) alloca (nbytes
);
2921 for (i
= 0; i
< nbytes
; i
++)
2922 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2925 /* Create the pixmap. */
2927 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2928 foreground
, background
,
2929 non_default_colors
);
2934 image_error ("Unable to create pixmap for XBM image `%s'",
2936 x_clear_image (f
, img
);
2946 /***********************************************************************
2948 ***********************************************************************/
2950 #if defined (HAVE_XPM) || defined (HAVE_NS)
2952 static int xpm_image_p (Lisp_Object object
);
2953 static int xpm_load (struct frame
*f
, struct image
*img
);
2954 static int xpm_valid_color_symbols_p (Lisp_Object
);
2956 #endif /* HAVE_XPM || HAVE_NS */
2960 /* Indicate to xpm.h that we don't have Xlib. */
2962 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
2963 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
2964 #define XColor xpm_XColor
2965 #define XImage xpm_XImage
2966 #define Display xpm_Display
2967 #define PIXEL_ALREADY_TYPEDEFED
2968 #include "X11/xpm.h"
2973 #undef PIXEL_ALREADY_TYPEDEFED
2975 #include "X11/xpm.h"
2976 #endif /* HAVE_NTGUI */
2977 #endif /* HAVE_XPM */
2979 #if defined (HAVE_XPM) || defined (HAVE_NS)
2980 /* The symbol `xpm' identifying XPM-format images. */
2982 static Lisp_Object Qxpm
;
2984 /* Indices of image specification fields in xpm_format, below. */
2986 enum xpm_keyword_index
3002 /* Vector of image_keyword structures describing the format
3003 of valid XPM image specifications. */
3005 static const struct image_keyword xpm_format
[XPM_LAST
] =
3007 {":type", IMAGE_SYMBOL_VALUE
, 1},
3008 {":file", IMAGE_STRING_VALUE
, 0},
3009 {":data", IMAGE_STRING_VALUE
, 0},
3010 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3011 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3012 {":relief", IMAGE_INTEGER_VALUE
, 0},
3013 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3014 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3015 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3016 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3017 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3020 /* Structure describing the image type XPM. */
3022 static struct image_type xpm_type
=
3031 #ifdef HAVE_X_WINDOWS
3033 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3034 functions for allocating image colors. Our own functions handle
3035 color allocation failures more gracefully than the ones on the XPM
3038 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3039 #define ALLOC_XPM_COLORS
3041 #endif /* HAVE_X_WINDOWS */
3043 #ifdef ALLOC_XPM_COLORS
3045 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3046 static void xpm_free_color_cache (void);
3047 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3048 static int xpm_color_bucket (char *);
3049 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3052 /* An entry in a hash table used to cache color definitions of named
3053 colors. This cache is necessary to speed up XPM image loading in
3054 case we do color allocations ourselves. Without it, we would need
3055 a call to XParseColor per pixel in the image. */
3057 struct xpm_cached_color
3059 /* Next in collision chain. */
3060 struct xpm_cached_color
*next
;
3062 /* Color definition (RGB and pixel color). */
3069 /* The hash table used for the color cache, and its bucket vector
3072 #define XPM_COLOR_CACHE_BUCKETS 1001
3073 static struct xpm_cached_color
**xpm_color_cache
;
3075 /* Initialize the color cache. */
3078 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3080 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3081 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3082 memset (xpm_color_cache
, 0, nbytes
);
3083 init_color_table ();
3085 if (attrs
->valuemask
& XpmColorSymbols
)
3090 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3091 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3092 attrs
->colorsymbols
[i
].value
, &color
))
3094 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3096 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3101 /* Free the color cache. */
3104 xpm_free_color_cache (void)
3106 struct xpm_cached_color
*p
, *next
;
3109 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3110 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3116 xfree (xpm_color_cache
);
3117 xpm_color_cache
= NULL
;
3118 free_color_table ();
3121 /* Return the bucket index for color named COLOR_NAME in the color
3125 xpm_color_bucket (char *color_name
)
3127 EMACS_UINT hash
= hash_string (color_name
, strlen (color_name
));
3128 return hash
% XPM_COLOR_CACHE_BUCKETS
;
3132 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3133 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3136 static struct xpm_cached_color
*
3137 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3140 struct xpm_cached_color
*p
;
3143 bucket
= xpm_color_bucket (color_name
);
3145 nbytes
= offsetof (struct xpm_cached_color
, name
) + strlen (color_name
) + 1;
3146 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3147 strcpy (p
->name
, color_name
);
3149 p
->next
= xpm_color_cache
[bucket
];
3150 xpm_color_cache
[bucket
] = p
;
3154 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3155 return the cached definition in *COLOR. Otherwise, make a new
3156 entry in the cache and allocate the color. Value is zero if color
3157 allocation failed. */
3160 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3162 struct xpm_cached_color
*p
;
3163 int h
= xpm_color_bucket (color_name
);
3165 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3166 if (strcmp (p
->name
, color_name
) == 0)
3171 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3174 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3176 p
= xpm_cache_color (f
, color_name
, color
, h
);
3178 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3179 with transparency, and it's useful. */
3180 else if (strcmp ("opaque", color_name
) == 0)
3182 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3183 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3184 p
= xpm_cache_color (f
, color_name
, color
, h
);
3191 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3192 CLOSURE is a pointer to the frame on which we allocate the
3193 color. Return in *COLOR the allocated color. Value is non-zero
3197 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3200 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3204 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3205 is a pointer to the frame on which we allocate the color. Value is
3206 non-zero if successful. */
3209 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3214 #endif /* ALLOC_XPM_COLORS */
3219 /* XPM library details. */
3221 DEF_IMGLIB_FN (void, XpmFreeAttributes
, (XpmAttributes
*));
3222 DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer
, (Display
*, char *, xpm_XImage
**,
3223 xpm_XImage
**, XpmAttributes
*));
3224 DEF_IMGLIB_FN (int, XpmReadFileToImage
, (Display
*, char *, xpm_XImage
**,
3225 xpm_XImage
**, XpmAttributes
*));
3226 DEF_IMGLIB_FN (void, XImageFree
, (xpm_XImage
*));
3229 init_xpm_functions (Lisp_Object libraries
)
3233 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3236 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3237 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3238 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3239 LOAD_IMGLIB_FN (library
, XImageFree
);
3243 #endif /* HAVE_NTGUI */
3246 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3247 for XPM images. Such a list must consist of conses whose car and
3251 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3253 while (CONSP (color_symbols
))
3255 Lisp_Object sym
= XCAR (color_symbols
);
3257 || !STRINGP (XCAR (sym
))
3258 || !STRINGP (XCDR (sym
)))
3260 color_symbols
= XCDR (color_symbols
);
3263 return NILP (color_symbols
);
3267 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3270 xpm_image_p (Lisp_Object object
)
3272 struct image_keyword fmt
[XPM_LAST
];
3273 memcpy (fmt
, xpm_format
, sizeof fmt
);
3274 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3275 /* Either `:file' or `:data' must be present. */
3276 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3277 /* Either no `:color-symbols' or it's a list of conses
3278 whose car and cdr are strings. */
3279 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3280 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3283 #endif /* HAVE_XPM || HAVE_NS */
3285 #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK
3287 x_create_bitmap_from_xpm_data (struct frame
*f
, const char **bits
)
3289 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3292 XpmAttributes attrs
;
3293 Pixmap bitmap
, mask
;
3295 memset (&attrs
, 0, sizeof attrs
);
3297 attrs
.visual
= FRAME_X_VISUAL (f
);
3298 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3299 attrs
.valuemask
|= XpmVisual
;
3300 attrs
.valuemask
|= XpmColormap
;
3302 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3303 (char **) bits
, &bitmap
, &mask
, &attrs
);
3304 if (rc
!= XpmSuccess
)
3306 XpmFreeAttributes (&attrs
);
3310 id
= x_allocate_bitmap_record (f
);
3311 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3312 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3313 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3314 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3315 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3316 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3317 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3318 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3320 XpmFreeAttributes (&attrs
);
3323 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3325 /* Load image IMG which will be displayed on frame F. Value is
3326 non-zero if successful. */
3331 xpm_load (struct frame
*f
, struct image
*img
)
3334 XpmAttributes attrs
;
3335 Lisp_Object specified_file
, color_symbols
;
3338 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3339 #endif /* HAVE_NTGUI */
3341 /* Configure the XPM lib. Use the visual of frame F. Allocate
3342 close colors. Return colors allocated. */
3343 memset (&attrs
, 0, sizeof attrs
);
3346 attrs
.visual
= FRAME_X_VISUAL (f
);
3347 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3348 attrs
.valuemask
|= XpmVisual
;
3349 attrs
.valuemask
|= XpmColormap
;
3350 #endif /* HAVE_NTGUI */
3352 #ifdef ALLOC_XPM_COLORS
3353 /* Allocate colors with our own functions which handle
3354 failing color allocation more gracefully. */
3355 attrs
.color_closure
= f
;
3356 attrs
.alloc_color
= xpm_alloc_color
;
3357 attrs
.free_colors
= xpm_free_colors
;
3358 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3359 #else /* not ALLOC_XPM_COLORS */
3360 /* Let the XPM lib allocate colors. */
3361 attrs
.valuemask
|= XpmReturnAllocPixels
;
3362 #ifdef XpmAllocCloseColors
3363 attrs
.alloc_close_colors
= 1;
3364 attrs
.valuemask
|= XpmAllocCloseColors
;
3365 #else /* not XpmAllocCloseColors */
3366 attrs
.closeness
= 600;
3367 attrs
.valuemask
|= XpmCloseness
;
3368 #endif /* not XpmAllocCloseColors */
3369 #endif /* ALLOC_XPM_COLORS */
3371 /* If image specification contains symbolic color definitions, add
3372 these to `attrs'. */
3373 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3374 if (CONSP (color_symbols
))
3377 XpmColorSymbol
*xpm_syms
;
3380 attrs
.valuemask
|= XpmColorSymbols
;
3382 /* Count number of symbols. */
3383 attrs
.numsymbols
= 0;
3384 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3387 /* Allocate an XpmColorSymbol array. */
3388 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3389 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3390 memset (xpm_syms
, 0, size
);
3391 attrs
.colorsymbols
= xpm_syms
;
3393 /* Fill the color symbol array. */
3394 for (tail
= color_symbols
, i
= 0;
3396 ++i
, tail
= XCDR (tail
))
3400 char *empty_string
= (char *) "";
3402 if (!CONSP (XCAR (tail
)))
3404 xpm_syms
[i
].name
= empty_string
;
3405 xpm_syms
[i
].value
= empty_string
;
3408 name
= XCAR (XCAR (tail
));
3409 color
= XCDR (XCAR (tail
));
3412 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3413 strcpy (xpm_syms
[i
].name
, SSDATA (name
));
3416 xpm_syms
[i
].name
= empty_string
;
3417 if (STRINGP (color
))
3419 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3420 strcpy (xpm_syms
[i
].value
, SSDATA (color
));
3423 xpm_syms
[i
].value
= empty_string
;
3427 /* Create a pixmap for the image, either from a file, or from a
3428 string buffer containing data in the same format as an XPM file. */
3429 #ifdef ALLOC_XPM_COLORS
3430 xpm_init_color_cache (f
, &attrs
);
3433 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3437 HDC frame_dc
= get_frame_dc (f
);
3438 hdc
= CreateCompatibleDC (frame_dc
);
3439 release_frame_dc (f
, frame_dc
);
3441 #endif /* HAVE_NTGUI */
3443 if (STRINGP (specified_file
))
3445 Lisp_Object file
= x_find_image_file (specified_file
);
3446 if (!STRINGP (file
))
3448 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3449 #ifdef ALLOC_XPM_COLORS
3450 xpm_free_color_cache ();
3456 /* XpmReadFileToPixmap is not available in the Windows port of
3457 libxpm. But XpmReadFileToImage almost does what we want. */
3458 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3459 &xpm_image
, &xpm_mask
,
3462 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3463 SSDATA (file
), &img
->pixmap
, &img
->mask
,
3465 #endif /* HAVE_NTGUI */
3469 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3470 if (!STRINGP (buffer
))
3472 image_error ("Invalid image data `%s'", buffer
, Qnil
);
3473 #ifdef ALLOC_XPM_COLORS
3474 xpm_free_color_cache ();
3479 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3480 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3481 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3482 &xpm_image
, &xpm_mask
,
3485 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3487 &img
->pixmap
, &img
->mask
,
3489 #endif /* HAVE_NTGUI */
3492 if (rc
== XpmSuccess
)
3494 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3495 img
->colors
= colors_in_color_table (&img
->ncolors
);
3496 #else /* not ALLOC_XPM_COLORS */
3500 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3501 plus some duplicate attributes. */
3502 if (xpm_image
&& xpm_image
->bitmap
)
3504 img
->pixmap
= xpm_image
->bitmap
;
3505 /* XImageFree in libXpm frees XImage struct without destroying
3506 the bitmap, which is what we want. */
3507 fn_XImageFree (xpm_image
);
3509 if (xpm_mask
&& xpm_mask
->bitmap
)
3511 /* The mask appears to be inverted compared with what we expect.
3512 TODO: invert our expectations. See other places where we
3513 have to invert bits because our idea of masks is backwards. */
3515 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3517 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3518 SelectObject (hdc
, old_obj
);
3520 img
->mask
= xpm_mask
->bitmap
;
3521 fn_XImageFree (xpm_mask
);
3526 #endif /* HAVE_NTGUI */
3528 /* Remember allocated colors. */
3529 img
->ncolors
= attrs
.nalloc_pixels
;
3530 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3531 * sizeof *img
->colors
);
3532 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3534 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3535 #ifdef DEBUG_X_COLORS
3536 register_color (img
->colors
[i
]);
3539 #endif /* not ALLOC_XPM_COLORS */
3541 img
->width
= attrs
.width
;
3542 img
->height
= attrs
.height
;
3543 xassert (img
->width
> 0 && img
->height
> 0);
3545 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3547 fn_XpmFreeAttributes (&attrs
);
3549 XpmFreeAttributes (&attrs
);
3550 #endif /* HAVE_NTGUI */
3556 #endif /* HAVE_NTGUI */
3561 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3564 case XpmFileInvalid
:
3565 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3569 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3572 case XpmColorFailed
:
3573 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3577 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3582 #ifdef ALLOC_XPM_COLORS
3583 xpm_free_color_cache ();
3585 return rc
== XpmSuccess
;
3588 #endif /* HAVE_XPM */
3590 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3592 /* XPM support functions for NS where libxpm is not available.
3593 Only XPM version 3 (without any extensions) is supported. */
3595 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3597 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3598 const unsigned char *, int);
3599 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3601 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3602 const unsigned char *, int);
3604 /* Tokens returned from xpm_scan. */
3613 /* Scan an XPM data and return a character (< 256) or a token defined
3614 by enum xpm_token above. *S and END are the start (inclusive) and
3615 the end (exclusive) addresses of the data, respectively. Advance
3616 *S while scanning. If token is either XPM_TK_IDENT or
3617 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3618 length of the corresponding token, respectively. */
3621 xpm_scan (const unsigned char **s
,
3622 const unsigned char *end
,
3623 const unsigned char **beg
,
3630 /* Skip white-space. */
3631 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3634 /* gnus-pointer.xpm uses '-' in its identifier.
3635 sb-dir-plus.xpm uses '+' in its identifier. */
3636 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3640 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3643 return XPM_TK_IDENT
;
3648 while (*s
< end
&& **s
!= '"')
3653 return XPM_TK_STRING
;
3657 if (*s
< end
&& **s
== '*')
3659 /* C-style comment. */
3663 while (*s
< end
&& *(*s
)++ != '*')
3666 while (*s
< end
&& **s
!= '/');
3680 /* Functions for color table lookup in XPM data. A key is a string
3681 specifying the color of each pixel in XPM data. A value is either
3682 an integer that specifies a pixel color, Qt that specifies
3683 transparency, or Qnil for the unspecified color. If the length of
3684 the key string is one, a vector is used as a table. Otherwise, a
3685 hash table is used. */
3688 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3689 const unsigned char *,
3692 Lisp_Object (**get_func
) (Lisp_Object
,
3693 const unsigned char *,
3696 *put_func
= xpm_put_color_table_v
;
3697 *get_func
= xpm_get_color_table_v
;
3698 return Fmake_vector (make_number (256), Qnil
);
3702 xpm_put_color_table_v (Lisp_Object color_table
,
3703 const unsigned char *chars_start
,
3707 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3711 xpm_get_color_table_v (Lisp_Object color_table
,
3712 const unsigned char *chars_start
,
3715 return XVECTOR (color_table
)->contents
[*chars_start
];
3719 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3720 const unsigned char *,
3723 Lisp_Object (**get_func
) (Lisp_Object
,
3724 const unsigned char *,
3727 *put_func
= xpm_put_color_table_h
;
3728 *get_func
= xpm_get_color_table_h
;
3729 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3730 make_float (DEFAULT_REHASH_SIZE
),
3731 make_float (DEFAULT_REHASH_THRESHOLD
),
3736 xpm_put_color_table_h (Lisp_Object color_table
,
3737 const unsigned char *chars_start
,
3741 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3742 EMACS_UINT hash_code
;
3743 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3745 hash_lookup (table
, chars
, &hash_code
);
3746 hash_put (table
, chars
, color
, hash_code
);
3750 xpm_get_color_table_h (Lisp_Object color_table
,
3751 const unsigned char *chars_start
,
3754 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3755 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3758 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3761 enum xpm_color_key
{
3769 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3772 xpm_str_to_color_key (const char *s
)
3777 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3779 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3785 xpm_load_image (struct frame
*f
,
3787 const unsigned char *contents
,
3788 const unsigned char *end
)
3790 const unsigned char *s
= contents
, *beg
, *str
;
3791 unsigned char buffer
[BUFSIZ
];
3792 int width
, height
, x
, y
;
3793 int num_colors
, chars_per_pixel
;
3796 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3797 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3798 Lisp_Object frame
, color_symbols
, color_table
;
3799 int best_key
, have_mask
= 0;
3800 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3803 LA1 = xpm_scan (&s, end, &beg, &len)
3805 #define expect(TOKEN) \
3806 if (LA1 != (TOKEN)) \
3811 #define expect_ident(IDENT) \
3812 if (LA1 == XPM_TK_IDENT \
3813 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3818 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3822 expect_ident ("static");
3823 expect_ident ("char");
3825 expect (XPM_TK_IDENT
);
3830 expect (XPM_TK_STRING
);
3833 memcpy (buffer
, beg
, len
);
3835 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3836 &num_colors
, &chars_per_pixel
) != 4
3837 || width
<= 0 || height
<= 0
3838 || num_colors
<= 0 || chars_per_pixel
<= 0)
3841 if (!check_image_size (f
, width
, height
))
3843 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3849 XSETFRAME (frame
, f
);
3850 if (!NILP (Fxw_display_color_p (frame
)))
3851 best_key
= XPM_COLOR_KEY_C
;
3852 else if (!NILP (Fx_display_grayscale_p (frame
)))
3853 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3854 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3856 best_key
= XPM_COLOR_KEY_M
;
3858 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3859 if (chars_per_pixel
== 1)
3860 color_table
= xpm_make_color_table_v (&put_color_table
,
3863 color_table
= xpm_make_color_table_h (&put_color_table
,
3866 while (num_colors
-- > 0)
3868 char *color
, *max_color
;
3869 int key
, next_key
, max_key
= 0;
3870 Lisp_Object symbol_color
= Qnil
, color_val
;
3873 expect (XPM_TK_STRING
);
3874 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3876 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3877 buffer
[len
- chars_per_pixel
] = '\0';
3879 str
= strtok (buffer
, " \t");
3882 key
= xpm_str_to_color_key (str
);
3887 color
= strtok (NULL
, " \t");
3891 while ((str
= strtok (NULL
, " \t")) != NULL
)
3893 next_key
= xpm_str_to_color_key (str
);
3896 color
[strlen (color
)] = ' ';
3899 if (key
== XPM_COLOR_KEY_S
)
3901 if (NILP (symbol_color
))
3902 symbol_color
= build_string (color
);
3904 else if (max_key
< key
&& key
<= best_key
)
3914 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3916 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3918 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3920 if (xstrcasecmp (SSDATA (XCDR (specified_color
)), "None") == 0)
3922 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3924 color_val
= make_number (cdef
.pixel
);
3927 if (NILP (color_val
) && max_key
> 0)
3929 if (xstrcasecmp (max_color
, "None") == 0)
3931 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3932 color_val
= make_number (cdef
.pixel
);
3934 if (!NILP (color_val
))
3935 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3940 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3941 &ximg
, &img
->pixmap
)
3943 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3944 &mask_img
, &img
->mask
)
3948 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3952 for (y
= 0; y
< height
; y
++)
3954 expect (XPM_TK_STRING
);
3956 if (len
< width
* chars_per_pixel
)
3958 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3960 Lisp_Object color_val
=
3961 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
3963 XPutPixel (ximg
, x
, y
,
3964 (INTEGERP (color_val
) ? XINT (color_val
)
3965 : FRAME_FOREGROUND_PIXEL (f
)));
3967 XPutPixel (mask_img
, x
, y
,
3968 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
3969 : (have_mask
= 1, PIX_MASK_RETAIN
)));
3971 if (EQ (color_val
, Qt
))
3972 ns_set_alpha (ximg
, x
, y
, 0);
3980 img
->height
= height
;
3982 /* Maybe fill in the background field while we have ximg handy. */
3983 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
3984 IMAGE_BACKGROUND (img
, f
, ximg
);
3986 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
3987 x_destroy_x_image (ximg
);
3991 /* Fill in the background_transparent field while we have the
3993 image_background_transparent (img
, f
, mask_img
);
3995 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
3996 x_destroy_x_image (mask_img
);
4000 x_destroy_x_image (mask_img
);
4001 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4002 img
->mask
= NO_PIXMAP
;
4008 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4010 x_destroy_x_image (ximg
);
4011 x_destroy_x_image (mask_img
);
4012 x_clear_image (f
, img
);
4021 xpm_load (struct frame
*f
,
4025 Lisp_Object file_name
;
4027 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4028 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4029 if (STRINGP (file_name
))
4032 unsigned char *contents
;
4035 file
= x_find_image_file (file_name
);
4036 if (!STRINGP (file
))
4038 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4042 contents
= slurp_file (SDATA (file
), &size
);
4043 if (contents
== NULL
)
4045 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4049 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4056 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4057 if (!STRINGP (data
))
4059 image_error ("Invalid image data `%s'", data
, Qnil
);
4062 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4063 SDATA (data
) + SBYTES (data
));
4069 #endif /* HAVE_NS && !HAVE_XPM */
4073 /***********************************************************************
4075 ***********************************************************************/
4077 #ifdef COLOR_TABLE_SUPPORT
4079 /* An entry in the color table mapping an RGB color to a pixel color. */
4084 unsigned long pixel
;
4086 /* Next in color table collision list. */
4087 struct ct_color
*next
;
4090 /* The bucket vector size to use. Must be prime. */
4094 /* Value is a hash of the RGB color given by R, G, and B. */
4096 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4098 /* The color hash table. */
4100 static struct ct_color
**ct_table
;
4102 /* Number of entries in the color table. */
4104 static int ct_colors_allocated
;
4106 /* Initialize the color table. */
4109 init_color_table (void)
4111 int size
= CT_SIZE
* sizeof (*ct_table
);
4112 ct_table
= (struct ct_color
**) xmalloc (size
);
4113 memset (ct_table
, 0, size
);
4114 ct_colors_allocated
= 0;
4118 /* Free memory associated with the color table. */
4121 free_color_table (void)
4124 struct ct_color
*p
, *next
;
4126 for (i
= 0; i
< CT_SIZE
; ++i
)
4127 for (p
= ct_table
[i
]; p
; p
= next
)
4138 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4139 entry for that color already is in the color table, return the
4140 pixel color of that entry. Otherwise, allocate a new color for R,
4141 G, B, and make an entry in the color table. */
4143 static unsigned long
4144 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4146 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4147 int i
= hash
% CT_SIZE
;
4149 Display_Info
*dpyinfo
;
4151 /* Handle TrueColor visuals specially, which improves performance by
4152 two orders of magnitude. Freeing colors on TrueColor visuals is
4153 a nop, and pixel colors specify RGB values directly. See also
4154 the Xlib spec, chapter 3.1. */
4155 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4156 if (dpyinfo
->red_bits
> 0)
4158 unsigned long pr
, pg
, pb
;
4160 /* Apply gamma-correction like normal color allocation does. */
4164 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4165 gamma_correct (f
, &color
);
4166 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4169 /* Scale down RGB values to the visual's bits per RGB, and shift
4170 them to the right position in the pixel color. Note that the
4171 original RGB values are 16-bit values, as usual in X. */
4172 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4173 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4174 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4176 /* Assemble the pixel color. */
4177 return pr
| pg
| pb
;
4180 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4181 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4187 #ifdef HAVE_X_WINDOWS
4196 cmap
= FRAME_X_COLORMAP (f
);
4197 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4200 ++ct_colors_allocated
;
4201 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4205 p
->pixel
= color
.pixel
;
4206 p
->next
= ct_table
[i
];
4210 return FRAME_FOREGROUND_PIXEL (f
);
4215 color
= PALETTERGB (r
, g
, b
);
4217 color
= RGB_TO_ULONG (r
, g
, b
);
4218 #endif /* HAVE_NTGUI */
4219 ++ct_colors_allocated
;
4220 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4225 p
->next
= ct_table
[i
];
4227 #endif /* HAVE_X_WINDOWS */
4235 /* Look up pixel color PIXEL which is used on frame F in the color
4236 table. If not already present, allocate it. Value is PIXEL. */
4238 static unsigned long
4239 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4241 int i
= pixel
% CT_SIZE
;
4244 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4245 if (p
->pixel
== pixel
)
4254 #ifdef HAVE_X_WINDOWS
4255 cmap
= FRAME_X_COLORMAP (f
);
4256 color
.pixel
= pixel
;
4257 x_query_color (f
, &color
);
4258 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4261 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4262 color
.pixel
= pixel
;
4263 XQueryColor (NULL
, cmap
, &color
);
4264 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4266 #endif /* HAVE_X_WINDOWS */
4270 ++ct_colors_allocated
;
4272 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4277 p
->next
= ct_table
[i
];
4281 return FRAME_FOREGROUND_PIXEL (f
);
4287 /* Value is a vector of all pixel colors contained in the color table,
4288 allocated via xmalloc. Set *N to the number of colors. */
4290 static unsigned long *
4291 colors_in_color_table (int *n
)
4295 unsigned long *colors
;
4297 if (ct_colors_allocated
== 0)
4304 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4306 *n
= ct_colors_allocated
;
4308 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4309 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4310 colors
[j
++] = p
->pixel
;
4316 #else /* COLOR_TABLE_SUPPORT */
4318 static unsigned long
4319 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4321 unsigned long pixel
;
4324 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4325 #endif /* HAVE_NTGUI */
4328 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4329 #endif /* HAVE_NS */
4334 init_color_table (void)
4337 #endif /* COLOR_TABLE_SUPPORT */
4340 /***********************************************************************
4342 ***********************************************************************/
4344 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4345 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4346 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4349 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4350 #endif /* HAVE_NTGUI */
4352 /* Edge detection matrices for different edge-detection
4355 static int emboss_matrix
[9] = {
4357 2, -1, 0, /* y - 1 */
4359 0, 1, -2 /* y + 1 */
4362 static int laplace_matrix
[9] = {
4364 1, 0, 0, /* y - 1 */
4366 0, 0, -1 /* y + 1 */
4369 /* Value is the intensity of the color whose red/green/blue values
4372 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4375 /* On frame F, return an array of XColor structures describing image
4376 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4377 non-zero means also fill the red/green/blue members of the XColor
4378 structures. Value is a pointer to the array of XColors structures,
4379 allocated with xmalloc; it must be freed by the caller. */
4382 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4386 XImagePtr_or_DC ximg
;
4390 #endif /* HAVE_NTGUI */
4392 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4395 /* Get the X image IMG->pixmap. */
4396 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4397 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4399 /* Load the image into a memory device context. */
4400 hdc
= get_frame_dc (f
);
4401 ximg
= CreateCompatibleDC (hdc
);
4402 release_frame_dc (f
, hdc
);
4403 prev
= SelectObject (ximg
, img
->pixmap
);
4404 #endif /* HAVE_NTGUI */
4406 /* Fill the `pixel' members of the XColor array. I wished there
4407 were an easy and portable way to circumvent XGetPixel. */
4409 for (y
= 0; y
< img
->height
; ++y
)
4413 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4414 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4415 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4417 x_query_colors (f
, row
, img
->width
);
4421 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4423 /* W32_TODO: palette support needed here? */
4424 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4427 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4428 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4429 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4432 #endif /* HAVE_X_WINDOWS */
4435 Destroy_Image (ximg
, prev
);
4442 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4443 created with CreateDIBSection, with the pointer to the bit values
4444 stored in ximg->data. */
4447 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4449 int width
= ximg
->info
.bmiHeader
.biWidth
;
4450 unsigned char * pixel
;
4452 /* True color images. */
4453 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4455 int rowbytes
= width
* 3;
4456 /* Ensure scanlines are aligned on 4 byte boundaries. */
4458 rowbytes
+= 4 - (rowbytes
% 4);
4460 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4461 /* Windows bitmaps are in BGR order. */
4462 *pixel
= GetBValue (color
);
4463 *(pixel
+ 1) = GetGValue (color
);
4464 *(pixel
+ 2) = GetRValue (color
);
4466 /* Monochrome images. */
4467 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4469 int rowbytes
= width
/ 8;
4470 /* Ensure scanlines are aligned on 4 byte boundaries. */
4472 rowbytes
+= 4 - (rowbytes
% 4);
4473 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4474 /* Filter out palette info. */
4475 if (color
& 0x00ffffff)
4476 *pixel
= *pixel
| (1 << x
% 8);
4478 *pixel
= *pixel
& ~(1 << x
% 8);
4481 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4484 #endif /* HAVE_NTGUI */
4486 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4487 RGB members are set. F is the frame on which this all happens.
4488 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4491 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4494 XImagePtr oimg
= NULL
;
4498 init_color_table ();
4500 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4503 for (y
= 0; y
< img
->height
; ++y
)
4504 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4506 unsigned long pixel
;
4507 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4508 XPutPixel (oimg
, x
, y
, pixel
);
4512 x_clear_image_1 (f
, img
, 1, 0, 1);
4514 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4515 x_destroy_x_image (oimg
);
4516 img
->pixmap
= pixmap
;
4517 #ifdef COLOR_TABLE_SUPPORT
4518 img
->colors
= colors_in_color_table (&img
->ncolors
);
4519 free_color_table ();
4520 #endif /* COLOR_TABLE_SUPPORT */
4524 /* On frame F, perform edge-detection on image IMG.
4526 MATRIX is a nine-element array specifying the transformation
4527 matrix. See emboss_matrix for an example.
4529 COLOR_ADJUST is a color adjustment added to each pixel of the
4533 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4535 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4539 for (i
= sum
= 0; i
< 9; ++i
)
4540 sum
+= eabs (matrix
[i
]);
4542 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4544 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4546 for (y
= 0; y
< img
->height
; ++y
)
4548 p
= COLOR (new, 0, y
);
4549 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4550 p
= COLOR (new, img
->width
- 1, y
);
4551 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4554 for (x
= 1; x
< img
->width
- 1; ++x
)
4556 p
= COLOR (new, x
, 0);
4557 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4558 p
= COLOR (new, x
, img
->height
- 1);
4559 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4562 for (y
= 1; y
< img
->height
- 1; ++y
)
4564 p
= COLOR (new, 1, y
);
4566 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4568 int r
, g
, b
, yy
, xx
;
4571 for (yy
= y
- 1; yy
< y
+ 2; ++yy
)
4572 for (xx
= x
- 1; xx
< x
+ 2; ++xx
, ++i
)
4575 XColor
*t
= COLOR (colors
, xx
, yy
);
4576 r
+= matrix
[i
] * t
->red
;
4577 g
+= matrix
[i
] * t
->green
;
4578 b
+= matrix
[i
] * t
->blue
;
4581 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4582 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4583 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4584 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4589 x_from_xcolors (f
, img
, new);
4595 /* Perform the pre-defined `emboss' edge-detection on image IMG
4599 x_emboss (struct frame
*f
, struct image
*img
)
4601 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4605 /* Transform image IMG which is used on frame F with a Laplace
4606 edge-detection algorithm. The result is an image that can be used
4607 to draw disabled buttons, for example. */
4610 x_laplace (struct frame
*f
, struct image
*img
)
4612 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4616 /* Perform edge-detection on image IMG on frame F, with specified
4617 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4619 MATRIX must be either
4621 - a list of at least 9 numbers in row-major form
4622 - a vector of at least 9 numbers
4624 COLOR_ADJUST nil means use a default; otherwise it must be a
4628 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4629 Lisp_Object color_adjust
)
4637 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4638 ++i
, matrix
= XCDR (matrix
))
4639 trans
[i
] = XFLOATINT (XCAR (matrix
));
4641 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4643 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4644 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4647 if (NILP (color_adjust
))
4648 color_adjust
= make_number (0xffff / 2);
4650 if (i
== 9 && NUMBERP (color_adjust
))
4651 x_detect_edges (f
, img
, trans
, XFLOATINT (color_adjust
));
4655 /* Transform image IMG on frame F so that it looks disabled. */
4658 x_disable_image (struct frame
*f
, struct image
*img
)
4660 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4662 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4664 int n_planes
= dpyinfo
->n_planes
;
4665 #endif /* HAVE_NTGUI */
4669 /* Color (or grayscale). Convert to gray, and equalize. Just
4670 drawing such images with a stipple can look very odd, so
4671 we're using this method instead. */
4672 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4674 const int h
= 15000;
4675 const int l
= 30000;
4677 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4681 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4682 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4683 p
->red
= p
->green
= p
->blue
= i2
;
4686 x_from_xcolors (f
, img
, colors
);
4689 /* Draw a cross over the disabled image, if we must or if we
4691 if (n_planes
< 2 || cross_disabled_images
)
4694 Display
*dpy
= FRAME_X_DISPLAY (f
);
4697 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4699 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4701 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4702 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4703 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4704 img
->width
- 1, img
->height
- 1);
4705 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4711 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4712 XSetForeground (dpy
, gc
, MaskForeground (f
));
4713 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4714 img
->width
- 1, img
->height
- 1);
4715 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4719 #endif /* !HAVE_NS */
4724 hdc
= get_frame_dc (f
);
4725 bmpdc
= CreateCompatibleDC (hdc
);
4726 release_frame_dc (f
, hdc
);
4728 prev
= SelectObject (bmpdc
, img
->pixmap
);
4730 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4731 MoveToEx (bmpdc
, 0, 0, NULL
);
4732 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4733 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4734 LineTo (bmpdc
, img
->width
- 1, 0);
4738 SelectObject (bmpdc
, img
->mask
);
4739 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4740 MoveToEx (bmpdc
, 0, 0, NULL
);
4741 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4742 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4743 LineTo (bmpdc
, img
->width
- 1, 0);
4745 SelectObject (bmpdc
, prev
);
4747 #endif /* HAVE_NTGUI */
4752 /* Build a mask for image IMG which is used on frame F. FILE is the
4753 name of an image file, for error messages. HOW determines how to
4754 determine the background color of IMG. If it is a list '(R G B)',
4755 with R, G, and B being integers >= 0, take that as the color of the
4756 background. Otherwise, determine the background color of IMG
4757 heuristically. Value is non-zero if successful. */
4760 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4762 XImagePtr_or_DC ximg
;
4770 #endif /* HAVE_NTGUI */
4771 int x
, y
, rc
, use_img_background
;
4772 unsigned long bg
= 0;
4776 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4777 img
->mask
= NO_PIXMAP
;
4778 img
->background_transparent_valid
= 0;
4783 /* Create an image and pixmap serving as mask. */
4784 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4785 &mask_img
, &img
->mask
);
4788 #endif /* !HAVE_NS */
4790 /* Get the X image of IMG->pixmap. */
4791 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4792 img
->width
, img
->height
,
4795 /* Create the bit array serving as mask. */
4796 row_width
= (img
->width
+ 7) / 8;
4797 mask_img
= xmalloc (row_width
* img
->height
);
4798 memset (mask_img
, 0, row_width
* img
->height
);
4800 /* Create a memory device context for IMG->pixmap. */
4801 frame_dc
= get_frame_dc (f
);
4802 ximg
= CreateCompatibleDC (frame_dc
);
4803 release_frame_dc (f
, frame_dc
);
4804 prev
= SelectObject (ximg
, img
->pixmap
);
4805 #endif /* HAVE_NTGUI */
4807 /* Determine the background color of ximg. If HOW is `(R G B)'
4808 take that as color. Otherwise, use the image's background color. */
4809 use_img_background
= 1;
4815 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4817 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4821 if (i
== 3 && NILP (how
))
4823 char color_name
[30];
4824 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4827 0x00ffffff & /* Filter out palette info. */
4828 #endif /* HAVE_NTGUI */
4829 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4830 use_img_background
= 0;
4834 if (use_img_background
)
4835 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4837 /* Set all bits in mask_img to 1 whose color in ximg is different
4838 from the background color bg. */
4840 for (y
= 0; y
< img
->height
; ++y
)
4841 for (x
= 0; x
< img
->width
; ++x
)
4843 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4844 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4846 if (XGetPixel (ximg
, x
, y
) == bg
)
4847 ns_set_alpha (ximg
, x
, y
, 0);
4848 #endif /* HAVE_NS */
4850 /* Fill in the background_transparent field while we have the mask handy. */
4851 image_background_transparent (img
, f
, mask_img
);
4853 /* Put mask_img into img->mask. */
4854 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4855 x_destroy_x_image (mask_img
);
4856 #endif /* !HAVE_NS */
4858 for (y
= 0; y
< img
->height
; ++y
)
4859 for (x
= 0; x
< img
->width
; ++x
)
4861 COLORREF p
= GetPixel (ximg
, x
, y
);
4863 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4866 /* Create the mask image. */
4867 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4869 /* Fill in the background_transparent field while we have the mask handy. */
4870 SelectObject (ximg
, img
->mask
);
4871 image_background_transparent (img
, f
, ximg
);
4873 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4875 #endif /* HAVE_NTGUI */
4877 Destroy_Image (ximg
, prev
);
4883 /***********************************************************************
4884 PBM (mono, gray, color)
4885 ***********************************************************************/
4887 static int pbm_image_p (Lisp_Object object
);
4888 static int pbm_load (struct frame
*f
, struct image
*img
);
4889 static int pbm_scan_number (unsigned char **, unsigned char *);
4891 /* The symbol `pbm' identifying images of this type. */
4893 static Lisp_Object Qpbm
;
4895 /* Indices of image specification fields in gs_format, below. */
4897 enum pbm_keyword_index
4913 /* Vector of image_keyword structures describing the format
4914 of valid user-defined image specifications. */
4916 static const struct image_keyword pbm_format
[PBM_LAST
] =
4918 {":type", IMAGE_SYMBOL_VALUE
, 1},
4919 {":file", IMAGE_STRING_VALUE
, 0},
4920 {":data", IMAGE_STRING_VALUE
, 0},
4921 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4922 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4923 {":relief", IMAGE_INTEGER_VALUE
, 0},
4924 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4925 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4926 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4927 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4928 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4931 /* Structure describing the image type `pbm'. */
4933 static struct image_type pbm_type
=
4943 /* Return non-zero if OBJECT is a valid PBM image specification. */
4946 pbm_image_p (Lisp_Object object
)
4948 struct image_keyword fmt
[PBM_LAST
];
4950 memcpy (fmt
, pbm_format
, sizeof fmt
);
4952 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4955 /* Must specify either :data or :file. */
4956 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4960 /* Scan a decimal number from *S and return it. Advance *S while
4961 reading the number. END is the end of the string. Value is -1 at
4965 pbm_scan_number (unsigned char **s
, unsigned char *end
)
4967 int c
= 0, val
= -1;
4971 /* Skip white-space. */
4972 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4977 /* Skip comment to end of line. */
4978 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
4981 else if (isdigit (c
))
4983 /* Read decimal number. */
4985 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
4986 val
= 10 * val
+ c
- '0';
4998 #if 0 /* Unused. ++kfs */
5000 /* Read FILE into memory. Value is a pointer to a buffer allocated
5001 with xmalloc holding FILE's contents. Value is null if an error
5002 occurred. *SIZE is set to the size of the file. */
5005 pbm_read_file (Lisp_Object file
, int *size
)
5011 if (stat (SDATA (file
), &st
) == 0
5012 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5013 && 0 <= st
.st_size
&& st
.st_size
<= min (PTRDIFF_MAX
, SIZE_MAX
)
5014 && (buf
= (char *) xmalloc (st
.st_size
),
5015 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5034 #endif /* HAVE_NTGUI */
5036 /* Load PBM image IMG for use on frame F. */
5039 pbm_load (struct frame
*f
, struct image
*img
)
5042 int width
, height
, max_color_idx
= 0;
5044 Lisp_Object file
, specified_file
;
5045 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5046 unsigned char *contents
= NULL
;
5047 unsigned char *end
, *p
;
5050 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5052 if (STRINGP (specified_file
))
5054 file
= x_find_image_file (specified_file
);
5055 if (!STRINGP (file
))
5057 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5061 contents
= slurp_file (SSDATA (file
), &size
);
5062 if (contents
== NULL
)
5064 image_error ("Error reading `%s'", file
, Qnil
);
5069 end
= contents
+ size
;
5074 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5075 if (!STRINGP (data
))
5077 image_error ("Invalid image data `%s'", data
, Qnil
);
5081 end
= p
+ SBYTES (data
);
5084 /* Check magic number. */
5085 if (end
- p
< 2 || *p
++ != 'P')
5087 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5096 raw_p
= 0, type
= PBM_MONO
;
5100 raw_p
= 0, type
= PBM_GRAY
;
5104 raw_p
= 0, type
= PBM_COLOR
;
5108 raw_p
= 1, type
= PBM_MONO
;
5112 raw_p
= 1, type
= PBM_GRAY
;
5116 raw_p
= 1, type
= PBM_COLOR
;
5120 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5124 /* Read width, height, maximum color-component. Characters
5125 starting with `#' up to the end of a line are ignored. */
5126 width
= pbm_scan_number (&p
, end
);
5127 height
= pbm_scan_number (&p
, end
);
5129 if (type
!= PBM_MONO
)
5131 max_color_idx
= pbm_scan_number (&p
, end
);
5132 if (max_color_idx
> 65535 || max_color_idx
< 0)
5134 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5139 if (!check_image_size (f
, width
, height
))
5141 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5145 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5146 &ximg
, &img
->pixmap
))
5149 /* Initialize the color hash table. */
5150 init_color_table ();
5152 if (type
== PBM_MONO
)
5155 struct image_keyword fmt
[PBM_LAST
];
5156 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5157 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5159 /* Parse the image specification. */
5160 memcpy (fmt
, pbm_format
, sizeof fmt
);
5161 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5163 /* Get foreground and background colors, maybe allocate colors. */
5164 if (fmt
[PBM_FOREGROUND
].count
5165 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5166 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5167 if (fmt
[PBM_BACKGROUND
].count
5168 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5170 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5171 img
->background
= bg
;
5172 img
->background_valid
= 1;
5175 for (y
= 0; y
< height
; ++y
)
5176 for (x
= 0; x
< width
; ++x
)
5184 x_destroy_x_image (ximg
);
5185 x_clear_image (f
, img
);
5186 image_error ("Invalid image size in image `%s'",
5196 g
= pbm_scan_number (&p
, end
);
5198 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5203 int expected_size
= height
* width
;
5204 if (max_color_idx
> 255)
5206 if (type
== PBM_COLOR
)
5209 if (raw_p
&& p
+ expected_size
> end
)
5211 x_destroy_x_image (ximg
);
5212 x_clear_image (f
, img
);
5213 image_error ("Invalid image size in image `%s'",
5218 for (y
= 0; y
< height
; ++y
)
5219 for (x
= 0; x
< width
; ++x
)
5223 if (type
== PBM_GRAY
&& raw_p
)
5226 if (max_color_idx
> 255)
5227 r
= g
= b
= r
* 256 + *p
++;
5229 else if (type
== PBM_GRAY
)
5230 r
= g
= b
= pbm_scan_number (&p
, end
);
5234 if (max_color_idx
> 255)
5237 if (max_color_idx
> 255)
5240 if (max_color_idx
> 255)
5245 r
= pbm_scan_number (&p
, end
);
5246 g
= pbm_scan_number (&p
, end
);
5247 b
= pbm_scan_number (&p
, end
);
5250 if (r
< 0 || g
< 0 || b
< 0)
5252 x_destroy_x_image (ximg
);
5253 image_error ("Invalid pixel value in image `%s'",
5258 /* RGB values are now in the range 0..max_color_idx.
5259 Scale this to the range 0..0xffff supported by X. */
5260 r
= (double) r
* 65535 / max_color_idx
;
5261 g
= (double) g
* 65535 / max_color_idx
;
5262 b
= (double) b
* 65535 / max_color_idx
;
5263 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5267 #ifdef COLOR_TABLE_SUPPORT
5268 /* Store in IMG->colors the colors allocated for the image, and
5269 free the color table. */
5270 img
->colors
= colors_in_color_table (&img
->ncolors
);
5271 free_color_table ();
5272 #endif /* COLOR_TABLE_SUPPORT */
5275 img
->height
= height
;
5277 /* Maybe fill in the background field while we have ximg handy. */
5279 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5280 /* Casting avoids a GCC warning. */
5281 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5283 /* Put the image into a pixmap. */
5284 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5285 x_destroy_x_image (ximg
);
5287 /* X and W32 versions did it here, MAC version above. ++kfs
5289 img->height = height; */
5296 /***********************************************************************
5298 ***********************************************************************/
5300 #if defined (HAVE_PNG) || defined (HAVE_NS)
5302 /* Function prototypes. */
5304 static int png_image_p (Lisp_Object object
);
5305 static int png_load (struct frame
*f
, struct image
*img
);
5307 /* The symbol `png' identifying images of this type. */
5309 static Lisp_Object Qpng
;
5311 /* Indices of image specification fields in png_format, below. */
5313 enum png_keyword_index
5328 /* Vector of image_keyword structures describing the format
5329 of valid user-defined image specifications. */
5331 static const struct image_keyword png_format
[PNG_LAST
] =
5333 {":type", IMAGE_SYMBOL_VALUE
, 1},
5334 {":data", IMAGE_STRING_VALUE
, 0},
5335 {":file", IMAGE_STRING_VALUE
, 0},
5336 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5337 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5338 {":relief", IMAGE_INTEGER_VALUE
, 0},
5339 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5340 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5341 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5342 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5345 /* Structure describing the image type `png'. */
5347 static struct image_type png_type
=
5356 /* Return non-zero if OBJECT is a valid PNG image specification. */
5359 png_image_p (Lisp_Object object
)
5361 struct image_keyword fmt
[PNG_LAST
];
5362 memcpy (fmt
, png_format
, sizeof fmt
);
5364 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5367 /* Must specify either the :data or :file keyword. */
5368 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5371 #endif /* HAVE_PNG || HAVE_NS */
5377 /* PNG library details. */
5379 DEF_IMGLIB_FN (png_voidp
, png_get_io_ptr
, (png_structp
));
5380 DEF_IMGLIB_FN (int, png_sig_cmp
, (png_bytep
, png_size_t
, png_size_t
));
5381 DEF_IMGLIB_FN (png_structp
, png_create_read_struct
, (png_const_charp
, png_voidp
,
5382 png_error_ptr
, png_error_ptr
));
5383 DEF_IMGLIB_FN (png_infop
, png_create_info_struct
, (png_structp
));
5384 DEF_IMGLIB_FN (void, png_destroy_read_struct
, (png_structpp
, png_infopp
, png_infopp
));
5385 DEF_IMGLIB_FN (void, png_set_read_fn
, (png_structp
, png_voidp
, png_rw_ptr
));
5386 DEF_IMGLIB_FN (void, png_set_sig_bytes
, (png_structp
, int));
5387 DEF_IMGLIB_FN (void, png_read_info
, (png_structp
, png_infop
));
5388 DEF_IMGLIB_FN (png_uint_32
, png_get_IHDR
, (png_structp
, png_infop
,
5389 png_uint_32
*, png_uint_32
*,
5390 int *, int *, int *, int *, int *));
5391 DEF_IMGLIB_FN (png_uint_32
, png_get_valid
, (png_structp
, png_infop
, png_uint_32
));
5392 DEF_IMGLIB_FN (void, png_set_strip_16
, (png_structp
));
5393 DEF_IMGLIB_FN (void, png_set_expand
, (png_structp
));
5394 DEF_IMGLIB_FN (void, png_set_gray_to_rgb
, (png_structp
));
5395 DEF_IMGLIB_FN (void, png_set_background
, (png_structp
, png_color_16p
,
5397 DEF_IMGLIB_FN (png_uint_32
, png_get_bKGD
, (png_structp
, png_infop
, png_color_16p
*));
5398 DEF_IMGLIB_FN (void, png_read_update_info
, (png_structp
, png_infop
));
5399 DEF_IMGLIB_FN (png_byte
, png_get_channels
, (png_structp
, png_infop
));
5400 DEF_IMGLIB_FN (png_size_t
, png_get_rowbytes
, (png_structp
, png_infop
));
5401 DEF_IMGLIB_FN (void, png_read_image
, (png_structp
, png_bytepp
));
5402 DEF_IMGLIB_FN (void, png_read_end
, (png_structp
, png_infop
));
5403 DEF_IMGLIB_FN (void, png_error
, (png_structp
, png_const_charp
));
5405 #if (PNG_LIBPNG_VER >= 10500)
5406 DEF_IMGLIB_FN (void, png_longjmp
, (png_structp
, int));
5407 DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn
, (png_structp
, png_longjmp_ptr
, size_t));
5408 #endif /* libpng version >= 1.5 */
5411 init_png_functions (Lisp_Object libraries
)
5415 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5418 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5419 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5420 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5421 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5422 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5423 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5424 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5425 LOAD_IMGLIB_FN (library
, png_read_info
);
5426 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5427 LOAD_IMGLIB_FN (library
, png_get_valid
);
5428 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5429 LOAD_IMGLIB_FN (library
, png_set_expand
);
5430 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5431 LOAD_IMGLIB_FN (library
, png_set_background
);
5432 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5433 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5434 LOAD_IMGLIB_FN (library
, png_get_channels
);
5435 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5436 LOAD_IMGLIB_FN (library
, png_read_image
);
5437 LOAD_IMGLIB_FN (library
, png_read_end
);
5438 LOAD_IMGLIB_FN (library
, png_error
);
5440 #if (PNG_LIBPNG_VER >= 10500)
5441 LOAD_IMGLIB_FN (library
, png_longjmp
);
5442 LOAD_IMGLIB_FN (library
, png_set_longjmp_fn
);
5443 #endif /* libpng version >= 1.5 */
5449 #define fn_png_get_io_ptr png_get_io_ptr
5450 #define fn_png_sig_cmp png_sig_cmp
5451 #define fn_png_create_read_struct png_create_read_struct
5452 #define fn_png_create_info_struct png_create_info_struct
5453 #define fn_png_destroy_read_struct png_destroy_read_struct
5454 #define fn_png_set_read_fn png_set_read_fn
5455 #define fn_png_set_sig_bytes png_set_sig_bytes
5456 #define fn_png_read_info png_read_info
5457 #define fn_png_get_IHDR png_get_IHDR
5458 #define fn_png_get_valid png_get_valid
5459 #define fn_png_set_strip_16 png_set_strip_16
5460 #define fn_png_set_expand png_set_expand
5461 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5462 #define fn_png_set_background png_set_background
5463 #define fn_png_get_bKGD png_get_bKGD
5464 #define fn_png_read_update_info png_read_update_info
5465 #define fn_png_get_channels png_get_channels
5466 #define fn_png_get_rowbytes png_get_rowbytes
5467 #define fn_png_read_image png_read_image
5468 #define fn_png_read_end png_read_end
5469 #define fn_png_error png_error
5471 #if (PNG_LIBPNG_VER >= 10500)
5472 #define fn_png_longjmp png_longjmp
5473 #define fn_png_set_longjmp_fn png_set_longjmp_fn
5474 #endif /* libpng version >= 1.5 */
5476 #endif /* HAVE_NTGUI */
5479 #if (PNG_LIBPNG_VER < 10500)
5480 #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1))
5481 #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf)
5483 /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */
5484 #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1))
5485 #define PNG_JMPBUF(ptr) \
5486 (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf)))
5489 /* Error and warning handlers installed when the PNG library
5492 static void my_png_error (png_struct
*, const char *) NO_RETURN
;
5494 my_png_error (png_struct
*png_ptr
, const char *msg
)
5496 xassert (png_ptr
!= NULL
);
5497 /* Avoid compiler warning about deprecated direct access to
5498 png_ptr's fields in libpng versions 1.4.x. */
5499 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5500 PNG_LONGJMP (png_ptr
);
5505 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5507 xassert (png_ptr
!= NULL
);
5508 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5511 /* Memory source for PNG decoding. */
5513 struct png_memory_storage
5515 unsigned char *bytes
; /* The data */
5516 ptrdiff_t len
; /* How big is it? */
5517 ptrdiff_t index
; /* Where are we? */
5521 /* Function set as reader function when reading PNG image from memory.
5522 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5523 bytes from the input to DATA. */
5526 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5528 struct png_memory_storage
*tbr
5529 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5531 if (length
> tbr
->len
- tbr
->index
)
5532 fn_png_error (png_ptr
, "Read error");
5534 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5535 tbr
->index
= tbr
->index
+ length
;
5539 /* Function set as reader function when reading PNG image from a file.
5540 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5541 bytes from the input to DATA. */
5544 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5546 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5548 if (fread (data
, 1, length
, fp
) < length
)
5549 fn_png_error (png_ptr
, "Read error");
5553 /* Load PNG image IMG for use on frame F. Value is non-zero if
5557 png_load (struct frame
*f
, struct image
*img
)
5559 Lisp_Object file
, specified_file
;
5560 Lisp_Object specified_data
;
5563 XImagePtr ximg
, mask_img
= NULL
;
5564 png_struct
*png_ptr
= NULL
;
5565 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5566 FILE *volatile fp
= NULL
;
5568 png_byte
* volatile pixels
= NULL
;
5569 png_byte
** volatile rows
= NULL
;
5570 png_uint_32 width
, height
;
5571 int bit_depth
, color_type
, interlace_type
;
5573 png_uint_32 row_bytes
;
5575 struct png_memory_storage tbr
; /* Data to be read */
5577 /* Find out what file to load. */
5578 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5579 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5581 if (NILP (specified_data
))
5583 file
= x_find_image_file (specified_file
);
5584 if (!STRINGP (file
))
5586 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5590 /* Open the image file. */
5591 fp
= fopen (SSDATA (file
), "rb");
5594 image_error ("Cannot open image file `%s'", file
, Qnil
);
5598 /* Check PNG signature. */
5599 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5600 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5602 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5609 if (!STRINGP (specified_data
))
5611 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
5615 /* Read from memory. */
5616 tbr
.bytes
= SDATA (specified_data
);
5617 tbr
.len
= SBYTES (specified_data
);
5620 /* Check PNG signature. */
5621 if (tbr
.len
< sizeof sig
5622 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5624 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5628 /* Need to skip past the signature. */
5629 tbr
.bytes
+= sizeof (sig
);
5632 /* Initialize read and info structs for PNG lib. */
5633 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5638 if (fp
) fclose (fp
);
5642 info_ptr
= fn_png_create_info_struct (png_ptr
);
5645 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5646 if (fp
) fclose (fp
);
5650 end_info
= fn_png_create_info_struct (png_ptr
);
5653 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5654 if (fp
) fclose (fp
);
5658 /* Set error jump-back. We come back here when the PNG library
5659 detects an error. */
5660 if (setjmp (PNG_JMPBUF (png_ptr
)))
5664 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5667 if (fp
) fclose (fp
);
5671 /* Read image info. */
5672 if (!NILP (specified_data
))
5673 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5675 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5677 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5678 fn_png_read_info (png_ptr
, info_ptr
);
5679 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5680 &interlace_type
, NULL
, NULL
);
5682 if (! (width
<= INT_MAX
&& height
<= INT_MAX
5683 && check_image_size (f
, width
, height
)))
5685 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5688 /* If image contains simply transparency data, we prefer to
5689 construct a clipping mask. */
5690 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5695 /* This function is easier to write if we only have to handle
5696 one data format: RGB or RGBA with 8 bits per channel. Let's
5697 transform other formats into that format. */
5699 /* Strip more than 8 bits per channel. */
5700 if (bit_depth
== 16)
5701 fn_png_set_strip_16 (png_ptr
);
5703 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5705 fn_png_set_expand (png_ptr
);
5707 /* Convert grayscale images to RGB. */
5708 if (color_type
== PNG_COLOR_TYPE_GRAY
5709 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5710 fn_png_set_gray_to_rgb (png_ptr
);
5712 /* Handle alpha channel by combining the image with a background
5713 color. Do this only if a real alpha channel is supplied. For
5714 simple transparency, we prefer a clipping mask. */
5717 /* png_color_16 *image_bg; */
5718 Lisp_Object specified_bg
5719 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5720 int shift
= (bit_depth
== 16) ? 0 : 8;
5722 if (STRINGP (specified_bg
))
5723 /* The user specified `:background', use that. */
5726 if (x_defined_color (f
, SSDATA (specified_bg
), &color
, 0))
5728 png_color_16 user_bg
;
5730 memset (&user_bg
, 0, sizeof user_bg
);
5731 user_bg
.red
= color
.red
>> shift
;
5732 user_bg
.green
= color
.green
>> shift
;
5733 user_bg
.blue
= color
.blue
>> shift
;
5735 fn_png_set_background (png_ptr
, &user_bg
,
5736 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5741 /* We use the current frame background, ignoring any default
5742 background color set by the image. */
5743 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5745 png_color_16 frame_background
;
5747 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5748 x_query_color (f
, &color
);
5750 memset (&frame_background
, 0, sizeof frame_background
);
5751 frame_background
.red
= color
.red
>> shift
;
5752 frame_background
.green
= color
.green
>> shift
;
5753 frame_background
.blue
= color
.blue
>> shift
;
5754 #endif /* HAVE_X_WINDOWS */
5756 fn_png_set_background (png_ptr
, &frame_background
,
5757 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5761 /* Update info structure. */
5762 fn_png_read_update_info (png_ptr
, info_ptr
);
5764 /* Get number of channels. Valid values are 1 for grayscale images
5765 and images with a palette, 2 for grayscale images with transparency
5766 information (alpha channel), 3 for RGB images, and 4 for RGB
5767 images with alpha channel, i.e. RGBA. If conversions above were
5768 sufficient we should only have 3 or 4 channels here. */
5769 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5770 xassert (channels
== 3 || channels
== 4);
5772 /* Number of bytes needed for one row of the image. */
5773 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5775 /* Allocate memory for the image. */
5776 if (min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof *rows
< height
5777 || min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof *pixels
/ height
< row_bytes
)
5778 memory_full (SIZE_MAX
);
5779 pixels
= (png_byte
*) xmalloc (sizeof *pixels
* row_bytes
* height
);
5780 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5781 for (i
= 0; i
< height
; ++i
)
5782 rows
[i
] = pixels
+ i
* row_bytes
;
5784 /* Read the entire image. */
5785 fn_png_read_image (png_ptr
, rows
);
5786 fn_png_read_end (png_ptr
, info_ptr
);
5793 /* Create the X image and pixmap. */
5794 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5798 /* Create an image and pixmap serving as mask if the PNG image
5799 contains an alpha channel. */
5802 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5803 &mask_img
, &img
->mask
))
5805 x_destroy_x_image (ximg
);
5806 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5807 img
->pixmap
= NO_PIXMAP
;
5811 /* Fill the X image and mask from PNG data. */
5812 init_color_table ();
5814 for (y
= 0; y
< height
; ++y
)
5816 png_byte
*p
= rows
[y
];
5818 for (x
= 0; x
< width
; ++x
)
5825 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5826 /* An alpha channel, aka mask channel, associates variable
5827 transparency with an image. Where other image formats
5828 support binary transparency---fully transparent or fully
5829 opaque---PNG allows up to 254 levels of partial transparency.
5830 The PNG library implements partial transparency by combining
5831 the image with a specified background color.
5833 I'm not sure how to handle this here nicely: because the
5834 background on which the image is displayed may change, for
5835 real alpha channel support, it would be necessary to create
5836 a new image for each possible background.
5838 What I'm doing now is that a mask is created if we have
5839 boolean transparency information. Otherwise I'm using
5840 the frame's background color to combine the image with. */
5845 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5851 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5852 /* Set IMG's background color from the PNG image, unless the user
5856 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5858 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5859 img
->background_valid
= 1;
5863 #ifdef COLOR_TABLE_SUPPORT
5864 /* Remember colors allocated for this image. */
5865 img
->colors
= colors_in_color_table (&img
->ncolors
);
5866 free_color_table ();
5867 #endif /* COLOR_TABLE_SUPPORT */
5870 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5875 img
->height
= height
;
5877 /* Maybe fill in the background field while we have ximg handy.
5878 Casting avoids a GCC warning. */
5879 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5881 /* Put the image into the pixmap, then free the X image and its buffer. */
5882 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5883 x_destroy_x_image (ximg
);
5885 /* Same for the mask. */
5888 /* Fill in the background_transparent field while we have the
5889 mask handy. Casting avoids a GCC warning. */
5890 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5892 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5893 x_destroy_x_image (mask_img
);
5899 #else /* HAVE_PNG */
5903 png_load (struct frame
*f
, struct image
*img
)
5905 return ns_load_image(f
, img
,
5906 image_spec_value (img
->spec
, QCfile
, NULL
),
5907 image_spec_value (img
->spec
, QCdata
, NULL
));
5909 #endif /* HAVE_NS */
5912 #endif /* !HAVE_PNG */
5916 /***********************************************************************
5918 ***********************************************************************/
5920 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5922 static int jpeg_image_p (Lisp_Object object
);
5923 static int jpeg_load (struct frame
*f
, struct image
*img
);
5925 /* The symbol `jpeg' identifying images of this type. */
5927 static Lisp_Object Qjpeg
;
5929 /* Indices of image specification fields in gs_format, below. */
5931 enum jpeg_keyword_index
5940 JPEG_HEURISTIC_MASK
,
5946 /* Vector of image_keyword structures describing the format
5947 of valid user-defined image specifications. */
5949 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5951 {":type", IMAGE_SYMBOL_VALUE
, 1},
5952 {":data", IMAGE_STRING_VALUE
, 0},
5953 {":file", IMAGE_STRING_VALUE
, 0},
5954 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5955 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5956 {":relief", IMAGE_INTEGER_VALUE
, 0},
5957 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5958 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5959 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5960 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5963 /* Structure describing the image type `jpeg'. */
5965 static struct image_type jpeg_type
=
5974 /* Return non-zero if OBJECT is a valid JPEG image specification. */
5977 jpeg_image_p (Lisp_Object object
)
5979 struct image_keyword fmt
[JPEG_LAST
];
5981 memcpy (fmt
, jpeg_format
, sizeof fmt
);
5983 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
5986 /* Must specify either the :data or :file keyword. */
5987 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
5990 #endif /* HAVE_JPEG || HAVE_NS */
5994 /* Work around a warning about HAVE_STDLIB_H being redefined in
5996 #ifdef HAVE_STDLIB_H
5997 #undef HAVE_STDLIB_H
5998 #endif /* HAVE_STLIB_H */
6000 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6001 /* In older releases of the jpeg library, jpeglib.h will define boolean
6002 differently depending on __WIN32__, so make sure it is defined. */
6006 #include <jpeglib.h>
6009 #ifdef HAVE_STLIB_H_1
6010 #define HAVE_STDLIB_H 1
6015 /* JPEG library details. */
6016 DEF_IMGLIB_FN (void, jpeg_CreateDecompress
, (j_decompress_ptr
, int, size_t));
6017 DEF_IMGLIB_FN (boolean
, jpeg_start_decompress
, (j_decompress_ptr
));
6018 DEF_IMGLIB_FN (boolean
, jpeg_finish_decompress
, (j_decompress_ptr
));
6019 DEF_IMGLIB_FN (void, jpeg_destroy_decompress
, (j_decompress_ptr
));
6020 DEF_IMGLIB_FN (int, jpeg_read_header
, (j_decompress_ptr
, boolean
));
6021 DEF_IMGLIB_FN (JDIMENSION
, jpeg_read_scanlines
, (j_decompress_ptr
, JSAMPARRAY
, JDIMENSION
));
6022 DEF_IMGLIB_FN (struct jpeg_error_mgr
*, jpeg_std_error
, (struct jpeg_error_mgr
*));
6023 DEF_IMGLIB_FN (boolean
, jpeg_resync_to_restart
, (j_decompress_ptr
, int));
6026 init_jpeg_functions (Lisp_Object libraries
)
6030 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6033 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6034 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6035 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6036 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6037 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6038 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6039 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6040 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6044 /* Wrapper since we can't directly assign the function pointer
6045 to another function pointer that was declared more completely easily. */
6047 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6049 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6054 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6055 #define fn_jpeg_start_decompress jpeg_start_decompress
6056 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6057 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6058 #define fn_jpeg_read_header jpeg_read_header
6059 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6060 #define fn_jpeg_std_error jpeg_std_error
6061 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6063 #endif /* HAVE_NTGUI */
6065 struct my_jpeg_error_mgr
6067 struct jpeg_error_mgr pub
;
6068 jmp_buf setjmp_buffer
;
6072 static void my_error_exit (j_common_ptr
) NO_RETURN
;
6074 my_error_exit (j_common_ptr cinfo
)
6076 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6077 longjmp (mgr
->setjmp_buffer
, 1);
6081 /* Init source method for JPEG data source manager. Called by
6082 jpeg_read_header() before any data is actually read. See
6083 libjpeg.doc from the JPEG lib distribution. */
6086 our_common_init_source (j_decompress_ptr cinfo
)
6091 /* Method to terminate data source. Called by
6092 jpeg_finish_decompress() after all data has been processed. */
6095 our_common_term_source (j_decompress_ptr cinfo
)
6100 /* Fill input buffer method for JPEG data source manager. Called
6101 whenever more data is needed. We read the whole image in one step,
6102 so this only adds a fake end of input marker at the end. */
6104 static JOCTET our_memory_buffer
[2];
6107 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6109 /* Insert a fake EOI marker. */
6110 struct jpeg_source_mgr
*src
= cinfo
->src
;
6112 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6113 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6115 src
->next_input_byte
= our_memory_buffer
;
6116 src
->bytes_in_buffer
= 2;
6121 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6122 is the JPEG data source manager. */
6125 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6127 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6131 if (num_bytes
> src
->bytes_in_buffer
)
6132 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6134 src
->bytes_in_buffer
-= num_bytes
;
6135 src
->next_input_byte
+= num_bytes
;
6140 /* Set up the JPEG lib for reading an image from DATA which contains
6141 LEN bytes. CINFO is the decompression info structure created for
6142 reading the image. */
6145 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6147 struct jpeg_source_mgr
*src
;
6149 if (cinfo
->src
== NULL
)
6151 /* First time for this JPEG object? */
6152 cinfo
->src
= (struct jpeg_source_mgr
*)
6153 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6154 sizeof (struct jpeg_source_mgr
));
6155 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6156 src
->next_input_byte
= data
;
6159 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6160 src
->init_source
= our_common_init_source
;
6161 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6162 src
->skip_input_data
= our_memory_skip_input_data
;
6163 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6164 src
->term_source
= our_common_term_source
;
6165 src
->bytes_in_buffer
= len
;
6166 src
->next_input_byte
= data
;
6170 struct jpeg_stdio_mgr
6172 struct jpeg_source_mgr mgr
;
6179 /* Size of buffer to read JPEG from file.
6180 Not too big, as we want to use alloc_small. */
6181 #define JPEG_STDIO_BUFFER_SIZE 8192
6184 /* Fill input buffer method for JPEG data source manager. Called
6185 whenever more data is needed. The data is read from a FILE *. */
6188 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6190 struct jpeg_stdio_mgr
*src
;
6192 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6197 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6199 src
->mgr
.bytes_in_buffer
= bytes
;
6202 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6204 src
->buffer
[0] = (JOCTET
) 0xFF;
6205 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6206 src
->mgr
.bytes_in_buffer
= 2;
6208 src
->mgr
.next_input_byte
= src
->buffer
;
6215 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6216 is the JPEG data source manager. */
6219 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6221 struct jpeg_stdio_mgr
*src
;
6222 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6224 while (num_bytes
> 0 && !src
->finished
)
6226 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6228 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6229 src
->mgr
.next_input_byte
+= num_bytes
;
6234 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6235 src
->mgr
.bytes_in_buffer
= 0;
6236 src
->mgr
.next_input_byte
= NULL
;
6238 our_stdio_fill_input_buffer (cinfo
);
6244 /* Set up the JPEG lib for reading an image from a FILE *.
6245 CINFO is the decompression info structure created for
6246 reading the image. */
6249 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6251 struct jpeg_stdio_mgr
*src
;
6253 if (cinfo
->src
!= NULL
)
6254 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6257 /* First time for this JPEG object? */
6258 cinfo
->src
= (struct jpeg_source_mgr
*)
6259 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6260 sizeof (struct jpeg_stdio_mgr
));
6261 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6262 src
->buffer
= (JOCTET
*)
6263 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6264 JPEG_STDIO_BUFFER_SIZE
);
6269 src
->mgr
.init_source
= our_common_init_source
;
6270 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6271 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6272 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6273 src
->mgr
.term_source
= our_common_term_source
;
6274 src
->mgr
.bytes_in_buffer
= 0;
6275 src
->mgr
.next_input_byte
= NULL
;
6279 /* Load image IMG for use on frame F. Patterned after example.c
6280 from the JPEG lib. */
6283 jpeg_load (struct frame
*f
, struct image
*img
)
6285 struct jpeg_decompress_struct cinfo
;
6286 struct my_jpeg_error_mgr mgr
;
6287 Lisp_Object file
, specified_file
;
6288 Lisp_Object specified_data
;
6289 FILE * volatile fp
= NULL
;
6291 int row_stride
, x
, y
;
6292 XImagePtr ximg
= NULL
;
6294 unsigned long *colors
;
6297 /* Open the JPEG file. */
6298 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6299 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6301 if (NILP (specified_data
))
6303 file
= x_find_image_file (specified_file
);
6304 if (!STRINGP (file
))
6306 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6310 fp
= fopen (SSDATA (file
), "rb");
6313 image_error ("Cannot open `%s'", file
, Qnil
);
6317 else if (!STRINGP (specified_data
))
6319 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6323 /* Customize libjpeg's error handling to call my_error_exit when an
6324 error is detected. This function will perform a longjmp. */
6325 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6326 mgr
.pub
.error_exit
= my_error_exit
;
6328 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6332 /* Called from my_error_exit. Display a JPEG error. */
6333 char buf
[JMSG_LENGTH_MAX
];
6334 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buf
);
6335 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6336 build_string (buf
));
6339 /* Close the input file and destroy the JPEG object. */
6341 fclose ((FILE *) fp
);
6342 fn_jpeg_destroy_decompress (&cinfo
);
6344 /* If we already have an XImage, free that. */
6345 x_destroy_x_image (ximg
);
6347 /* Free pixmap and colors. */
6348 x_clear_image (f
, img
);
6352 /* Create the JPEG decompression object. Let it read from fp.
6353 Read the JPEG image header. */
6354 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6356 if (NILP (specified_data
))
6357 jpeg_file_src (&cinfo
, (FILE *) fp
);
6359 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6360 SBYTES (specified_data
));
6362 fn_jpeg_read_header (&cinfo
, 1);
6364 /* Customize decompression so that color quantization will be used.
6365 Start decompression. */
6366 cinfo
.quantize_colors
= 1;
6367 fn_jpeg_start_decompress (&cinfo
);
6368 width
= img
->width
= cinfo
.output_width
;
6369 height
= img
->height
= cinfo
.output_height
;
6371 if (!check_image_size (f
, width
, height
))
6373 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6374 longjmp (mgr
.setjmp_buffer
, 2);
6377 /* Create X image and pixmap. */
6378 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6379 longjmp (mgr
.setjmp_buffer
, 2);
6381 /* Allocate colors. When color quantization is used,
6382 cinfo.actual_number_of_colors has been set with the number of
6383 colors generated, and cinfo.colormap is a two-dimensional array
6384 of color indices in the range 0..cinfo.actual_number_of_colors.
6385 No more than 255 colors will be generated. */
6389 if (cinfo
.out_color_components
> 2)
6390 ir
= 0, ig
= 1, ib
= 2;
6391 else if (cinfo
.out_color_components
> 1)
6392 ir
= 0, ig
= 1, ib
= 0;
6394 ir
= 0, ig
= 0, ib
= 0;
6396 /* Use the color table mechanism because it handles colors that
6397 cannot be allocated nicely. Such colors will be replaced with
6398 a default color, and we don't have to care about which colors
6399 can be freed safely, and which can't. */
6400 init_color_table ();
6401 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6404 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6406 /* Multiply RGB values with 255 because X expects RGB values
6407 in the range 0..0xffff. */
6408 int r
= cinfo
.colormap
[ir
][i
] << 8;
6409 int g
= cinfo
.colormap
[ig
][i
] << 8;
6410 int b
= cinfo
.colormap
[ib
][i
] << 8;
6411 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6414 #ifdef COLOR_TABLE_SUPPORT
6415 /* Remember those colors actually allocated. */
6416 img
->colors
= colors_in_color_table (&img
->ncolors
);
6417 free_color_table ();
6418 #endif /* COLOR_TABLE_SUPPORT */
6422 row_stride
= width
* cinfo
.output_components
;
6423 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6425 for (y
= 0; y
< height
; ++y
)
6427 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6428 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6429 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6433 fn_jpeg_finish_decompress (&cinfo
);
6434 fn_jpeg_destroy_decompress (&cinfo
);
6436 fclose ((FILE *) fp
);
6438 /* Maybe fill in the background field while we have ximg handy. */
6439 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6440 /* Casting avoids a GCC warning. */
6441 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6443 /* Put the image into the pixmap. */
6444 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6445 x_destroy_x_image (ximg
);
6449 #else /* HAVE_JPEG */
6453 jpeg_load (struct frame
*f
, struct image
*img
)
6455 return ns_load_image (f
, img
,
6456 image_spec_value (img
->spec
, QCfile
, NULL
),
6457 image_spec_value (img
->spec
, QCdata
, NULL
));
6459 #endif /* HAVE_NS */
6461 #endif /* !HAVE_JPEG */
6465 /***********************************************************************
6467 ***********************************************************************/
6469 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6471 static int tiff_image_p (Lisp_Object object
);
6472 static int tiff_load (struct frame
*f
, struct image
*img
);
6474 /* The symbol `tiff' identifying images of this type. */
6476 static Lisp_Object Qtiff
;
6478 /* Indices of image specification fields in tiff_format, below. */
6480 enum tiff_keyword_index
6489 TIFF_HEURISTIC_MASK
,
6496 /* Vector of image_keyword structures describing the format
6497 of valid user-defined image specifications. */
6499 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6501 {":type", IMAGE_SYMBOL_VALUE
, 1},
6502 {":data", IMAGE_STRING_VALUE
, 0},
6503 {":file", IMAGE_STRING_VALUE
, 0},
6504 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6505 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6506 {":relief", IMAGE_INTEGER_VALUE
, 0},
6507 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6508 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6509 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6510 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6511 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6514 /* Structure describing the image type `tiff'. */
6516 static struct image_type tiff_type
=
6525 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6528 tiff_image_p (Lisp_Object object
)
6530 struct image_keyword fmt
[TIFF_LAST
];
6531 memcpy (fmt
, tiff_format
, sizeof fmt
);
6533 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6536 /* Must specify either the :data or :file keyword. */
6537 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6540 #endif /* HAVE_TIFF || HAVE_NS */
6548 /* TIFF library details. */
6549 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetErrorHandler
, (TIFFErrorHandler
));
6550 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetWarningHandler
, (TIFFErrorHandler
));
6551 DEF_IMGLIB_FN (TIFF
*, TIFFOpen
, (const char *, const char *));
6552 DEF_IMGLIB_FN (TIFF
*, TIFFClientOpen
, (const char *, const char *, thandle_t
,
6553 TIFFReadWriteProc
, TIFFReadWriteProc
,
6554 TIFFSeekProc
, TIFFCloseProc
, TIFFSizeProc
,
6555 TIFFMapFileProc
, TIFFUnmapFileProc
));
6556 DEF_IMGLIB_FN (int, TIFFGetField
, (TIFF
*, ttag_t
, ...));
6557 DEF_IMGLIB_FN (int, TIFFReadRGBAImage
, (TIFF
*, uint32
, uint32
, uint32
*, int));
6558 DEF_IMGLIB_FN (void, TIFFClose
, (TIFF
*));
6559 DEF_IMGLIB_FN (int, TIFFSetDirectory
, (TIFF
*, tdir_t
));
6562 init_tiff_functions (Lisp_Object libraries
)
6566 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6569 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6570 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6571 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6572 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6573 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6574 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6575 LOAD_IMGLIB_FN (library
, TIFFClose
);
6576 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6582 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6583 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6584 #define fn_TIFFOpen TIFFOpen
6585 #define fn_TIFFClientOpen TIFFClientOpen
6586 #define fn_TIFFGetField TIFFGetField
6587 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6588 #define fn_TIFFClose TIFFClose
6589 #define fn_TIFFSetDirectory TIFFSetDirectory
6590 #endif /* HAVE_NTGUI */
6593 /* Reading from a memory buffer for TIFF images Based on the PNG
6594 memory source, but we have to provide a lot of extra functions.
6597 We really only need to implement read and seek, but I am not
6598 convinced that the TIFF library is smart enough not to destroy
6599 itself if we only hand it the function pointers we need to
6604 unsigned char *bytes
;
6611 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6613 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6615 size
= min (size
, src
->len
- src
->index
);
6616 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6622 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6628 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6630 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6635 case SEEK_SET
: /* Go from beginning of source. */
6639 case SEEK_END
: /* Go from end of source. */
6640 idx
= src
->len
+ off
;
6643 case SEEK_CUR
: /* Go from current position. */
6644 idx
= src
->index
+ off
;
6647 default: /* Invalid `whence'. */
6651 if (idx
> src
->len
|| idx
< 0)
6659 tiff_close_memory (thandle_t data
)
6666 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6668 /* It is already _IN_ memory. */
6673 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6675 /* We don't need to do this. */
6679 tiff_size_of_memory (thandle_t data
)
6681 return ((tiff_memory_source
*) data
)->len
;
6685 static void tiff_error_handler (const char *, const char *, va_list)
6686 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6688 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6693 len
= sprintf (buf
, "TIFF error: %s ", title
);
6694 vsprintf (buf
+ len
, format
, ap
);
6695 add_to_log (buf
, Qnil
, Qnil
);
6699 static void tiff_warning_handler (const char *, const char *, va_list)
6700 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6702 tiff_warning_handler (const char *title
, const char *format
, va_list ap
)
6707 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6708 vsprintf (buf
+ len
, format
, ap
);
6709 add_to_log (buf
, Qnil
, Qnil
);
6713 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6717 tiff_load (struct frame
*f
, struct image
*img
)
6719 Lisp_Object file
, specified_file
;
6720 Lisp_Object specified_data
;
6722 int width
, height
, x
, y
, count
;
6726 tiff_memory_source memsrc
;
6729 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6730 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6732 fn_TIFFSetErrorHandler ((TIFFErrorHandler
) tiff_error_handler
);
6733 fn_TIFFSetWarningHandler ((TIFFErrorHandler
) tiff_warning_handler
);
6735 if (NILP (specified_data
))
6737 /* Read from a file */
6738 file
= x_find_image_file (specified_file
);
6739 if (!STRINGP (file
))
6741 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6745 /* Try to open the image file. */
6746 tiff
= fn_TIFFOpen (SSDATA (file
), "r");
6749 image_error ("Cannot open `%s'", file
, Qnil
);
6755 if (!STRINGP (specified_data
))
6757 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6761 /* Memory source! */
6762 memsrc
.bytes
= SDATA (specified_data
);
6763 memsrc
.len
= SBYTES (specified_data
);
6766 tiff
= fn_TIFFClientOpen ("memory_source", "r", (thandle_t
)&memsrc
,
6767 tiff_read_from_memory
,
6768 tiff_write_from_memory
,
6769 tiff_seek_in_memory
,
6771 tiff_size_of_memory
,
6777 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6782 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6783 if (INTEGERP (image
))
6785 int ino
= XFASTINT (image
);
6786 if (!fn_TIFFSetDirectory (tiff
, ino
))
6788 image_error ("Invalid image number `%s' in image `%s'",
6790 fn_TIFFClose (tiff
);
6795 /* Get width and height of the image, and allocate a raster buffer
6796 of width x height 32-bit values. */
6797 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6798 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6800 if (!check_image_size (f
, width
, height
))
6802 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6803 fn_TIFFClose (tiff
);
6807 if (min (PTRDIFF_MAX
, SIZE_MAX
) / sizeof *buf
/ width
< height
)
6808 memory_full (SIZE_MAX
);
6809 buf
= (uint32
*) xmalloc (sizeof *buf
* width
* height
);
6811 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6813 /* Count the number of images in the file. */
6814 for (count
= 1; fn_TIFFSetDirectory (tiff
, count
); count
++)
6818 img
->lisp_data
= Fcons (Qcount
,
6819 Fcons (make_number (count
),
6822 fn_TIFFClose (tiff
);
6825 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6830 /* Create the X image and pixmap. */
6831 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6837 /* Initialize the color table. */
6838 init_color_table ();
6840 /* Process the pixel raster. Origin is in the lower-left corner. */
6841 for (y
= 0; y
< height
; ++y
)
6843 uint32
*row
= buf
+ y
* width
;
6845 for (x
= 0; x
< width
; ++x
)
6847 uint32 abgr
= row
[x
];
6848 int r
= TIFFGetR (abgr
) << 8;
6849 int g
= TIFFGetG (abgr
) << 8;
6850 int b
= TIFFGetB (abgr
) << 8;
6851 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6855 #ifdef COLOR_TABLE_SUPPORT
6856 /* Remember the colors allocated for the image. Free the color table. */
6857 img
->colors
= colors_in_color_table (&img
->ncolors
);
6858 free_color_table ();
6859 #endif /* COLOR_TABLE_SUPPORT */
6862 img
->height
= height
;
6864 /* Maybe fill in the background field while we have ximg handy. */
6865 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6866 /* Casting avoids a GCC warning on W32. */
6867 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6869 /* Put the image into the pixmap, then free the X image and its buffer. */
6870 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6871 x_destroy_x_image (ximg
);
6877 #else /* HAVE_TIFF */
6881 tiff_load (struct frame
*f
, struct image
*img
)
6883 return ns_load_image (f
, img
,
6884 image_spec_value (img
->spec
, QCfile
, NULL
),
6885 image_spec_value (img
->spec
, QCdata
, NULL
));
6887 #endif /* HAVE_NS */
6889 #endif /* !HAVE_TIFF */
6893 /***********************************************************************
6895 ***********************************************************************/
6897 #if defined (HAVE_GIF) || defined (HAVE_NS)
6899 static int gif_image_p (Lisp_Object object
);
6900 static int gif_load (struct frame
*f
, struct image
*img
);
6901 static void gif_clear_image (struct frame
*f
, struct image
*img
);
6903 /* The symbol `gif' identifying images of this type. */
6905 static Lisp_Object Qgif
;
6907 /* Indices of image specification fields in gif_format, below. */
6909 enum gif_keyword_index
6925 /* Vector of image_keyword structures describing the format
6926 of valid user-defined image specifications. */
6928 static const struct image_keyword gif_format
[GIF_LAST
] =
6930 {":type", IMAGE_SYMBOL_VALUE
, 1},
6931 {":data", IMAGE_STRING_VALUE
, 0},
6932 {":file", IMAGE_STRING_VALUE
, 0},
6933 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6934 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6935 {":relief", IMAGE_INTEGER_VALUE
, 0},
6936 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6937 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6938 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6939 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6940 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6943 /* Structure describing the image type `gif'. */
6945 static struct image_type gif_type
=
6954 /* Free X resources of GIF image IMG which is used on frame F. */
6957 gif_clear_image (struct frame
*f
, struct image
*img
)
6959 img
->lisp_data
= Qnil
;
6960 x_clear_image (f
, img
);
6963 /* Return non-zero if OBJECT is a valid GIF image specification. */
6966 gif_image_p (Lisp_Object object
)
6968 struct image_keyword fmt
[GIF_LAST
];
6969 memcpy (fmt
, gif_format
, sizeof fmt
);
6971 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
6974 /* Must specify either the :data or :file keyword. */
6975 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
6978 #endif /* HAVE_GIF */
6982 #if defined (HAVE_NTGUI)
6983 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
6984 Undefine before redefining to avoid a preprocessor warning. */
6988 /* avoid conflict with QuickdrawText.h */
6989 #define DrawText gif_DrawText
6990 #include <gif_lib.h>
6993 #else /* HAVE_NTGUI */
6995 #include <gif_lib.h>
6997 #endif /* HAVE_NTGUI */
7002 /* GIF library details. */
7003 DEF_IMGLIB_FN (int, DGifCloseFile
, (GifFileType
*));
7004 DEF_IMGLIB_FN (int, DGifSlurp
, (GifFileType
*));
7005 DEF_IMGLIB_FN (GifFileType
*, DGifOpen
, (void *, InputFunc
));
7006 DEF_IMGLIB_FN (GifFileType
*, DGifOpenFileName
, (const char *));
7009 init_gif_functions (Lisp_Object libraries
)
7013 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7016 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7017 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7018 LOAD_IMGLIB_FN (library
, DGifOpen
);
7019 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7025 #define fn_DGifCloseFile DGifCloseFile
7026 #define fn_DGifSlurp DGifSlurp
7027 #define fn_DGifOpen DGifOpen
7028 #define fn_DGifOpenFileName DGifOpenFileName
7030 #endif /* HAVE_NTGUI */
7032 /* Reading a GIF image from memory
7033 Based on the PNG memory stuff to a certain extent. */
7037 unsigned char *bytes
;
7043 /* Make the current memory source available to gif_read_from_memory.
7044 It's done this way because not all versions of libungif support
7045 a UserData field in the GifFileType structure. */
7046 static gif_memory_source
*current_gif_memory_src
;
7049 gif_read_from_memory (GifFileType
*file
, GifByteType
*buf
, int len
)
7051 gif_memory_source
*src
= current_gif_memory_src
;
7053 if (len
> src
->len
- src
->index
)
7056 memcpy (buf
, src
->bytes
+ src
->index
, len
);
7062 /* Load GIF image IMG for use on frame F. Value is non-zero if
7065 static const int interlace_start
[] = {0, 4, 2, 1};
7066 static const int interlace_increment
[] = {8, 8, 4, 2};
7068 #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249
7071 gif_load (struct frame
*f
, struct image
*img
)
7074 int rc
, width
, height
, x
, y
, i
, j
;
7076 ColorMapObject
*gif_color_map
;
7077 unsigned long pixel_colors
[256];
7079 int image_height
, image_width
;
7080 gif_memory_source memsrc
;
7081 Lisp_Object specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
7082 Lisp_Object specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7083 Lisp_Object specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7084 unsigned long bgcolor
= 0;
7087 if (NILP (specified_data
))
7089 file
= x_find_image_file (specified_file
);
7090 if (!STRINGP (file
))
7092 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7096 /* Open the GIF file. */
7097 gif
= fn_DGifOpenFileName (SSDATA (file
));
7100 image_error ("Cannot open `%s'", file
, Qnil
);
7106 if (!STRINGP (specified_data
))
7108 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
7112 /* Read from memory! */
7113 current_gif_memory_src
= &memsrc
;
7114 memsrc
.bytes
= SDATA (specified_data
);
7115 memsrc
.len
= SBYTES (specified_data
);
7118 gif
= fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7121 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7126 /* Before reading entire contents, check the declared image size. */
7127 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7129 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7130 fn_DGifCloseFile (gif
);
7134 /* Read entire contents. */
7135 rc
= fn_DGifSlurp (gif
);
7136 if (rc
== GIF_ERROR
|| gif
->ImageCount
<= 0)
7138 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7139 fn_DGifCloseFile (gif
);
7143 /* Which sub-image are we to display? */
7145 Lisp_Object image_number
= image_spec_value (img
->spec
, QCindex
, NULL
);
7146 idx
= INTEGERP (image_number
) ? XFASTINT (image_number
) : 0;
7147 if (idx
< 0 || idx
>= gif
->ImageCount
)
7149 image_error ("Invalid image number `%s' in image `%s'",
7150 image_number
, img
->spec
);
7151 fn_DGifCloseFile (gif
);
7156 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[idx
].ImageDesc
.Top
;
7157 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[idx
].ImageDesc
.Left
;
7158 image_height
= gif
->SavedImages
[idx
].ImageDesc
.Height
;
7159 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7160 image_width
= gif
->SavedImages
[idx
].ImageDesc
.Width
;
7161 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7163 width
= img
->width
= max (gif
->SWidth
,
7164 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7165 img
->corners
[RIGHT_CORNER
]));
7166 height
= img
->height
= max (gif
->SHeight
,
7167 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7168 img
->corners
[BOT_CORNER
]));
7170 if (!check_image_size (f
, width
, height
))
7172 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7173 fn_DGifCloseFile (gif
);
7177 /* Create the X image and pixmap. */
7178 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7180 fn_DGifCloseFile (gif
);
7184 /* Clear the part of the screen image not covered by the image.
7185 Full animated GIF support requires more here (see the gif89 spec,
7186 disposal methods). Let's simply assume that the part not covered
7187 by a sub-image is in the frame's background color. */
7188 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7189 for (x
= 0; x
< width
; ++x
)
7190 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7192 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7193 for (x
= 0; x
< width
; ++x
)
7194 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7196 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7198 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7199 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7200 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7201 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7204 /* Read the GIF image into the X image. */
7206 /* FIXME: With the current implementation, loading an animated gif
7207 is quadratic in the number of animation frames, since each frame
7208 is a separate struct image. We must provide a way for a single
7209 gif_load call to construct and save all animation frames. */
7211 init_color_table ();
7212 if (STRINGP (specified_bg
))
7213 bgcolor
= x_alloc_image_color (f
, img
, specified_bg
,
7214 FRAME_BACKGROUND_PIXEL (f
));
7215 for (j
= 0; j
<= idx
; ++j
)
7217 /* We use a local variable `raster' here because RasterBits is a
7218 char *, which invites problems with bytes >= 0x80. */
7219 struct SavedImage
*subimage
= gif
->SavedImages
+ j
;
7220 unsigned char *raster
= (unsigned char *) subimage
->RasterBits
;
7221 int transparency_color_index
= -1;
7224 /* Find the Graphic Control Extension block for this sub-image.
7225 Extract the disposal method and transparency color. */
7226 for (i
= 0; i
< subimage
->ExtensionBlockCount
; i
++)
7228 ExtensionBlock
*extblock
= subimage
->ExtensionBlocks
+ i
;
7230 if ((extblock
->Function
== GIF_LOCAL_DESCRIPTOR_EXTENSION
)
7231 && extblock
->ByteCount
== 4
7232 && extblock
->Bytes
[0] & 1)
7234 /* From gif89a spec: 1 = "keep in place", 2 = "restore
7235 to background". Treat any other value like 2. */
7236 disposal
= (extblock
->Bytes
[0] >> 2) & 7;
7237 transparency_color_index
= (unsigned char) extblock
->Bytes
[3];
7242 /* We can't "keep in place" the first subimage. */
7246 /* Allocate subimage colors. */
7247 memset (pixel_colors
, 0, sizeof pixel_colors
);
7248 gif_color_map
= subimage
->ImageDesc
.ColorMap
;
7250 gif_color_map
= gif
->SColorMap
;
7253 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7255 if (transparency_color_index
== i
)
7256 pixel_colors
[i
] = STRINGP (specified_bg
)
7257 ? bgcolor
: FRAME_BACKGROUND_PIXEL (f
);
7260 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7261 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7262 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7263 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7267 /* Apply the pixel values. */
7268 if (gif
->SavedImages
[j
].ImageDesc
.Interlace
)
7272 for (y
= 0, row
= interlace_start
[0], pass
= 0;
7274 y
++, row
+= interlace_increment
[pass
])
7276 if (row
>= image_height
)
7278 row
= interlace_start
[++pass
];
7279 while (row
>= image_height
)
7280 row
= interlace_start
[++pass
];
7283 for (x
= 0; x
< image_width
; x
++)
7285 int c
= raster
[y
* image_width
+ x
];
7286 if (transparency_color_index
!= c
|| disposal
!= 1)
7287 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7288 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7294 for (y
= 0; y
< image_height
; ++y
)
7295 for (x
= 0; x
< image_width
; ++x
)
7297 int c
= raster
[y
* image_width
+ x
];
7298 if (transparency_color_index
!= c
|| disposal
!= 1)
7299 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7300 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7305 #ifdef COLOR_TABLE_SUPPORT
7306 img
->colors
= colors_in_color_table (&img
->ncolors
);
7307 free_color_table ();
7308 #endif /* COLOR_TABLE_SUPPORT */
7310 /* Save GIF image extension data for `image-metadata'.
7311 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7312 img
->lisp_data
= Qnil
;
7313 if (gif
->SavedImages
[idx
].ExtensionBlockCount
> 0)
7315 unsigned int delay
= 0;
7316 ExtensionBlock
*ext
= gif
->SavedImages
[idx
].ExtensionBlocks
;
7317 for (i
= 0; i
< gif
->SavedImages
[idx
].ExtensionBlockCount
; i
++, ext
++)
7318 /* Append (... FUNCTION "BYTES") */
7321 = Fcons (make_number (ext
->Function
),
7322 Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7324 if (ext
->Function
== GIF_LOCAL_DESCRIPTOR_EXTENSION
7325 && ext
->ByteCount
== 4)
7327 delay
= ext
->Bytes
[2] << CHAR_BIT
;
7328 delay
|= ext
->Bytes
[1];
7331 img
->lisp_data
= Fcons (Qextension_data
,
7332 Fcons (img
->lisp_data
, Qnil
));
7336 Fcons (make_float (((double) delay
) * 0.01),
7340 if (gif
->ImageCount
> 1)
7341 img
->lisp_data
= Fcons (Qcount
,
7342 Fcons (make_number (gif
->ImageCount
),
7345 fn_DGifCloseFile (gif
);
7347 /* Maybe fill in the background field while we have ximg handy. */
7348 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7349 /* Casting avoids a GCC warning. */
7350 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7352 /* Put the image into the pixmap, then free the X image and its buffer. */
7353 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7354 x_destroy_x_image (ximg
);
7359 #else /* !HAVE_GIF */
7363 gif_load (struct frame
*f
, struct image
*img
)
7365 return ns_load_image (f
, img
,
7366 image_spec_value (img
->spec
, QCfile
, NULL
),
7367 image_spec_value (img
->spec
, QCdata
, NULL
));
7369 #endif /* HAVE_NS */
7371 #endif /* HAVE_GIF */
7374 /***********************************************************************
7376 ***********************************************************************/
7377 #if defined (HAVE_IMAGEMAGICK)
7379 static Lisp_Object Qimagemagick
;
7381 static int imagemagick_image_p (Lisp_Object
);
7382 static int imagemagick_load (struct frame
*, struct image
*);
7383 static void imagemagick_clear_image (struct frame
*, struct image
*);
7385 /* Indices of image specification fields in imagemagick_format. */
7387 enum imagemagick_keyword_index
7395 IMAGEMAGICK_ALGORITHM
,
7396 IMAGEMAGICK_HEURISTIC_MASK
,
7398 IMAGEMAGICK_BACKGROUND
,
7401 IMAGEMAGICK_ROTATION
,
7406 /* Vector of image_keyword structures describing the format
7407 of valid user-defined image specifications. */
7409 static struct image_keyword imagemagick_format
[IMAGEMAGICK_LAST
] =
7411 {":type", IMAGE_SYMBOL_VALUE
, 1},
7412 {":data", IMAGE_STRING_VALUE
, 0},
7413 {":file", IMAGE_STRING_VALUE
, 0},
7414 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7415 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7416 {":relief", IMAGE_INTEGER_VALUE
, 0},
7417 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7418 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7419 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7420 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
7421 {":height", IMAGE_INTEGER_VALUE
, 0},
7422 {":width", IMAGE_INTEGER_VALUE
, 0},
7423 {":rotation", IMAGE_NUMBER_VALUE
, 0},
7424 {":crop", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
7427 /* Structure describing the image type for any image handled via
7430 static struct image_type imagemagick_type
=
7433 imagemagick_image_p
,
7435 imagemagick_clear_image
,
7439 /* Free X resources of imagemagick image IMG which is used on frame F. */
7442 imagemagick_clear_image (struct frame
*f
,
7445 x_clear_image (f
, img
);
7448 /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do
7449 this by calling parse_image_spec and supplying the keywords that
7450 identify the IMAGEMAGICK format. */
7453 imagemagick_image_p (Lisp_Object object
)
7455 struct image_keyword fmt
[IMAGEMAGICK_LAST
];
7456 memcpy (fmt
, imagemagick_format
, sizeof fmt
);
7458 if (!parse_image_spec (object
, fmt
, IMAGEMAGICK_LAST
, Qimagemagick
))
7461 /* Must specify either the :data or :file keyword. */
7462 return fmt
[IMAGEMAGICK_FILE
].count
+ fmt
[IMAGEMAGICK_DATA
].count
== 1;
7465 /* The GIF library also defines DrawRectangle, but its never used in Emacs.
7466 Therefore rename the function so it doesnt collide with ImageMagick. */
7467 #define DrawRectangle DrawRectangleGif
7468 #include <wand/MagickWand.h>
7470 /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason.
7471 Emacs seems to work fine with the hidden version, so unhide it. */
7472 #include <magick/version.h>
7473 #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665
7474 extern WandExport
void PixelGetMagickColor (const PixelWand
*,
7475 MagickPixelPacket
*);
7478 /* Helper function for imagemagick_load, which does the actual loading
7479 given contents and size, apart from frame and image structures,
7480 passed from imagemagick_load. Uses librimagemagick to do most of
7481 the image processing.
7483 F is a pointer to the Emacs frame; IMG to the image structure to
7484 prepare; CONTENTS is the string containing the IMAGEMAGICK data to
7485 be parsed; SIZE is the number of bytes of data; and FILENAME is
7486 either the file name or the image data.
7488 Return non-zero if successful. */
7491 imagemagick_load_image (struct frame
*f
, struct image
*img
,
7492 unsigned char *contents
, unsigned int size
,
7498 MagickBooleanType status
;
7504 MagickWand
*image_wand
;
7505 MagickWand
*ping_wand
;
7506 PixelIterator
*iterator
;
7508 MagickPixelPacket pixel
;
7513 int desired_width
, desired_height
;
7515 int imagemagick_rendermethod
;
7517 ImageInfo
*image_info
;
7518 ExceptionInfo
*exception
;
7522 /* Handle image index for image types who can contain more than one image.
7523 Interface :index is same as for GIF. First we "ping" the image to see how
7524 many sub-images it contains. Pinging is faster than loading the image to
7525 find out things about it. */
7527 /* Initialize the imagemagick environment. */
7528 MagickWandGenesis ();
7529 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7530 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7531 ping_wand
= NewMagickWand ();
7532 MagickSetResolution (ping_wand
, 2, 2);
7533 if (filename
!= NULL
)
7535 status
= MagickPingImage (ping_wand
, filename
);
7539 status
= MagickPingImageBlob (ping_wand
, contents
, size
);
7542 if (ino
>= MagickGetNumberImages (ping_wand
))
7544 image_error ("Invalid image number `%s' in image `%s'",
7546 DestroyMagickWand (ping_wand
);
7550 if (MagickGetNumberImages(ping_wand
) > 1)
7553 Fcons (make_number (MagickGetNumberImages (ping_wand
)),
7556 DestroyMagickWand (ping_wand
);
7558 /* Now we know how many images are inside the file. If it's not a
7559 bundle, the number is one. */
7561 if (filename
!= NULL
)
7563 image_info
= CloneImageInfo ((ImageInfo
*) NULL
);
7564 (void) strcpy (image_info
->filename
, filename
);
7565 image_info
->number_scenes
= 1;
7566 image_info
->scene
= ino
;
7567 exception
= AcquireExceptionInfo ();
7569 im_image
= ReadImage (image_info
, exception
);
7570 DestroyExceptionInfo (exception
);
7572 if (im_image
== NULL
)
7573 goto imagemagick_no_wand
;
7574 image_wand
= NewMagickWandFromImage (im_image
);
7575 DestroyImage(im_image
);
7579 image_wand
= NewMagickWand ();
7580 if (MagickReadImageBlob (image_wand
, contents
, size
) == MagickFalse
)
7581 goto imagemagick_error
;
7584 /* If width and/or height is set in the display spec assume we want
7585 to scale to those values. If either h or w is unspecified, the
7586 unspecified should be calculated from the specified to preserve
7589 value
= image_spec_value (img
->spec
, QCwidth
, NULL
);
7590 desired_width
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7591 value
= image_spec_value (img
->spec
, QCheight
, NULL
);
7592 desired_height
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7594 height
= MagickGetImageHeight (image_wand
);
7595 width
= MagickGetImageWidth (image_wand
);
7597 if (desired_width
!= -1 && desired_height
== -1)
7598 /* w known, calculate h. */
7599 desired_height
= (double) desired_width
/ width
* height
;
7600 if (desired_width
== -1 && desired_height
!= -1)
7601 /* h known, calculate w. */
7602 desired_width
= (double) desired_height
/ height
* width
;
7603 if (desired_width
!= -1 && desired_height
!= -1)
7605 status
= MagickScaleImage (image_wand
, desired_width
, desired_height
);
7606 if (status
== MagickFalse
)
7608 image_error ("Imagemagick scale failed", Qnil
, Qnil
);
7609 goto imagemagick_error
;
7613 /* crop behaves similar to image slicing in Emacs but is more memory
7615 crop
= image_spec_value (img
->spec
, QCcrop
, NULL
);
7617 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7619 /* After some testing, it seems MagickCropImage is the fastest crop
7620 function in ImageMagick. This crop function seems to do less copying
7621 than the alternatives, but it still reads the entire image into memory
7622 before croping, which is aparently difficult to avoid when using
7625 w
= XFASTINT (XCAR (crop
));
7627 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7629 h
= XFASTINT (XCAR (crop
));
7631 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7633 x
= XFASTINT (XCAR (crop
));
7635 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7637 y
= XFASTINT (XCAR (crop
));
7638 MagickCropImage (image_wand
, w
, h
, x
, y
);
7644 /* Furthermore :rotation. we need background color and angle for
7647 TODO background handling for rotation specified_bg =
7648 image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP
7650 value
= image_spec_value (img
->spec
, QCrotation
, NULL
);
7653 PixelWand
* background
= NewPixelWand ();
7654 PixelSetColor (background
, "#ffffff");/*TODO remove hardcode*/
7656 rotation
= extract_float (value
);
7658 status
= MagickRotateImage (image_wand
, background
, rotation
);
7659 DestroyPixelWand (background
);
7660 if (status
== MagickFalse
)
7662 image_error ("Imagemagick image rotate failed", Qnil
, Qnil
);
7663 goto imagemagick_error
;
7667 /* Finally we are done manipulating the image. Figure out the
7668 resulting width/height and transfer ownerwship to Emacs. */
7669 height
= MagickGetImageHeight (image_wand
);
7670 width
= MagickGetImageWidth (image_wand
);
7672 if (! (width
<= INT_MAX
&& height
<= INT_MAX
7673 && check_image_size (f
, width
, height
)))
7675 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7676 goto imagemagick_error
;
7679 /* We can now get a valid pixel buffer from the imagemagick file, if all
7682 init_color_table ();
7683 imagemagick_rendermethod
= (INTEGERP (Vimagemagick_render_type
)
7684 ? XFASTINT (Vimagemagick_render_type
) : 0);
7685 if (imagemagick_rendermethod
== 0)
7687 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7688 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
7689 &ximg
, &img
->pixmap
))
7691 #ifdef COLOR_TABLE_SUPPORT
7692 free_color_table ();
7694 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7695 goto imagemagick_error
;
7698 /* Copy imagegmagick image to x with primitive yet robust pixel
7699 pusher loop. This has been tested a lot with many different
7702 /* Copy pixels from the imagemagick image structure to the x image map. */
7703 iterator
= NewPixelIterator (image_wand
);
7704 if (iterator
== (PixelIterator
*) NULL
)
7706 #ifdef COLOR_TABLE_SUPPORT
7707 free_color_table ();
7709 x_destroy_x_image (ximg
);
7710 image_error ("Imagemagick pixel iterator creation failed",
7712 goto imagemagick_error
;
7715 for (y
= 0; y
< (long) MagickGetImageHeight (image_wand
); y
++)
7717 pixels
= PixelGetNextIteratorRow (iterator
, &width
);
7718 if (pixels
== (PixelWand
**) NULL
)
7720 for (x
= 0; x
< (long) width
; x
++)
7722 PixelGetMagickColor (pixels
[x
], &pixel
);
7723 XPutPixel (ximg
, x
, y
,
7724 lookup_rgb_color (f
,
7730 DestroyPixelIterator (iterator
);
7733 if (imagemagick_rendermethod
== 1)
7735 /* Magicexportimage is normaly faster than pixelpushing. This
7736 method is also well tested. Some aspects of this method are
7737 ad-hoc and needs to be more researched. */
7738 int imagedepth
= 24;/*MagickGetImageDepth(image_wand);*/
7739 const char *exportdepth
= imagedepth
<= 8 ? "I" : "BGRP";/*"RGBP";*/
7740 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7741 if (!x_create_x_image_and_pixmap (f
, width
, height
, imagedepth
,
7742 &ximg
, &img
->pixmap
))
7744 #ifdef COLOR_TABLE_SUPPORT
7745 free_color_table ();
7747 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7748 goto imagemagick_error
;
7752 /* Oddly, the below code doesnt seem to work:*/
7753 /* switch(ximg->bitmap_unit){ */
7755 /* pixelwidth=CharPixel; */
7758 /* pixelwidth=ShortPixel; */
7761 /* pixelwidth=LongPixel; */
7765 Here im just guessing the format of the bitmap.
7766 happens to work fine for:
7769 seems about 3 times as fast as pixel pushing(not carefully measured)
7771 pixelwidth
= CharPixel
;/*??? TODO figure out*/
7772 #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS
7773 MagickExportImagePixels (image_wand
,
7778 /*&(img->pixmap));*/
7781 image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!",
7787 #ifdef COLOR_TABLE_SUPPORT
7788 /* Remember colors allocated for this image. */
7789 img
->colors
= colors_in_color_table (&img
->ncolors
);
7790 free_color_table ();
7791 #endif /* COLOR_TABLE_SUPPORT */
7795 img
->height
= height
;
7797 /* Put the image into the pixmap, then free the X image and its
7799 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7800 x_destroy_x_image (ximg
);
7803 /* Final cleanup. image_wand should be the only resource left. */
7804 DestroyMagickWand (image_wand
);
7805 /* `MagickWandTerminus' terminates the imagemagick environment. */
7806 MagickWandTerminus ();
7811 DestroyMagickWand (image_wand
);
7812 imagemagick_no_wand
:
7813 MagickWandTerminus ();
7814 /* TODO more cleanup. */
7815 image_error ("Error parsing IMAGEMAGICK image `%s'", img
->spec
, Qnil
);
7820 /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if
7821 successful. this function will go into the imagemagick_type structure, and
7822 the prototype thus needs to be compatible with that structure. */
7825 imagemagick_load (struct frame
*f
, struct image
*img
)
7828 Lisp_Object file_name
;
7830 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7831 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7832 if (STRINGP (file_name
))
7836 file
= x_find_image_file (file_name
);
7837 if (!STRINGP (file
))
7839 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7842 success_p
= imagemagick_load_image (f
, img
, 0, 0, SSDATA (file
));
7844 /* Else its not a file, its a lisp object. Load the image from a
7845 lisp object rather than a file. */
7850 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7851 if (!STRINGP (data
))
7853 image_error ("Invalid image data `%s'", data
, Qnil
);
7856 success_p
= imagemagick_load_image (f
, img
, SDATA (data
),
7857 SBYTES (data
), NULL
);
7863 DEFUN ("imagemagick-types", Fimagemagick_types
, Simagemagick_types
, 0, 0, 0,
7864 doc
: /* Return a list of image types supported by ImageMagick.
7865 Each entry in this list is a symbol named after an ImageMagick format
7866 tag. See the ImageMagick manual for a list of ImageMagick formats and
7867 their descriptions (http://www.imagemagick.org/script/formats.php).
7869 Note that ImageMagick recognizes many file-types that Emacs does not
7870 recognize as images, such as C. See `imagemagick-types-inhibit'. */)
7873 Lisp_Object typelist
= Qnil
;
7876 char **imtypes
= GetMagickList ("*", &numf
, &ex
);
7878 Lisp_Object Qimagemagicktype
;
7879 for (i
= 0; i
< numf
; i
++)
7881 Qimagemagicktype
= intern (imtypes
[i
]);
7882 typelist
= Fcons (Qimagemagicktype
, typelist
);
7887 #endif /* defined (HAVE_IMAGEMAGICK) */
7891 /***********************************************************************
7893 ***********************************************************************/
7895 #if defined (HAVE_RSVG)
7897 /* Function prototypes. */
7899 static int svg_image_p (Lisp_Object object
);
7900 static int svg_load (struct frame
*f
, struct image
*img
);
7902 static int svg_load_image (struct frame
*, struct image
*,
7903 unsigned char *, ptrdiff_t);
7905 /* The symbol `svg' identifying images of this type. */
7907 static Lisp_Object Qsvg
;
7909 /* Indices of image specification fields in svg_format, below. */
7911 enum svg_keyword_index
7926 /* Vector of image_keyword structures describing the format
7927 of valid user-defined image specifications. */
7929 static const struct image_keyword svg_format
[SVG_LAST
] =
7931 {":type", IMAGE_SYMBOL_VALUE
, 1},
7932 {":data", IMAGE_STRING_VALUE
, 0},
7933 {":file", IMAGE_STRING_VALUE
, 0},
7934 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7935 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7936 {":relief", IMAGE_INTEGER_VALUE
, 0},
7937 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7938 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7939 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7940 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7943 /* Structure describing the image type `svg'. Its the same type of
7944 structure defined for all image formats, handled by emacs image
7945 functions. See struct image_type in dispextern.h. */
7947 static struct image_type svg_type
=
7949 /* An identifier showing that this is an image structure for the SVG format. */
7951 /* Handle to a function that can be used to identify a SVG file. */
7953 /* Handle to function used to load a SVG file. */
7955 /* Handle to function to free sresources for SVG. */
7957 /* An internal field to link to the next image type in a list of
7958 image types, will be filled in when registering the format. */
7963 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7964 this by calling parse_image_spec and supplying the keywords that
7965 identify the SVG format. */
7968 svg_image_p (Lisp_Object object
)
7970 struct image_keyword fmt
[SVG_LAST
];
7971 memcpy (fmt
, svg_format
, sizeof fmt
);
7973 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7976 /* Must specify either the :data or :file keyword. */
7977 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7980 #include <librsvg/rsvg.h>
7984 /* SVG library functions. */
7985 DEF_IMGLIB_FN (RsvgHandle
*, rsvg_handle_new
);
7986 DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions
);
7987 DEF_IMGLIB_FN (gboolean
, rsvg_handle_write
);
7988 DEF_IMGLIB_FN (gboolean
, rsvg_handle_close
);
7989 DEF_IMGLIB_FN (GdkPixbuf
*, rsvg_handle_get_pixbuf
);
7991 DEF_IMGLIB_FN (int, gdk_pixbuf_get_width
);
7992 DEF_IMGLIB_FN (int, gdk_pixbuf_get_height
);
7993 DEF_IMGLIB_FN (guchar
*, gdk_pixbuf_get_pixels
);
7994 DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride
);
7995 DEF_IMGLIB_FN (GdkColorspace
, gdk_pixbuf_get_colorspace
);
7996 DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels
);
7997 DEF_IMGLIB_FN (gboolean
, gdk_pixbuf_get_has_alpha
);
7998 DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample
);
8000 DEF_IMGLIB_FN (void, g_type_init
);
8001 DEF_IMGLIB_FN (void, g_object_unref
);
8002 DEF_IMGLIB_FN (void, g_error_free
);
8004 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
8007 init_svg_functions (Lisp_Object libraries
)
8009 HMODULE library
, gdklib
, glib
, gobject
;
8011 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
8012 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
8013 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
8014 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
8017 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
8018 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
8019 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
8020 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
8021 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
8023 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
8024 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
8025 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
8026 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
8027 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
8028 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
8029 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
8030 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
8032 LOAD_IMGLIB_FN (gobject
, g_type_init
);
8033 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
8034 LOAD_IMGLIB_FN (glib
, g_error_free
);
8040 /* The following aliases for library functions allow dynamic loading
8041 to be used on some platforms. */
8042 #define fn_rsvg_handle_new rsvg_handle_new
8043 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
8044 #define fn_rsvg_handle_write rsvg_handle_write
8045 #define fn_rsvg_handle_close rsvg_handle_close
8046 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
8048 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
8049 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
8050 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
8051 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
8052 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
8053 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
8054 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
8055 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
8057 #define fn_g_type_init g_type_init
8058 #define fn_g_object_unref g_object_unref
8059 #define fn_g_error_free g_error_free
8060 #endif /* !HAVE_NTGUI */
8062 /* Load SVG image IMG for use on frame F. Value is non-zero if
8063 successful. this function will go into the svg_type structure, and
8064 the prototype thus needs to be compatible with that structure. */
8067 svg_load (struct frame
*f
, struct image
*img
)
8070 Lisp_Object file_name
;
8072 /* If IMG->spec specifies a file name, create a non-file spec from it. */
8073 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
8074 if (STRINGP (file_name
))
8077 unsigned char *contents
;
8080 file
= x_find_image_file (file_name
);
8081 if (!STRINGP (file
))
8083 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
8087 /* Read the entire file into memory. */
8088 contents
= slurp_file (SSDATA (file
), &size
);
8089 if (contents
== NULL
)
8091 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
8094 /* If the file was slurped into memory properly, parse it. */
8095 success_p
= svg_load_image (f
, img
, contents
, size
);
8098 /* Else its not a file, its a lisp object. Load the image from a
8099 lisp object rather than a file. */
8104 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
8105 if (!STRINGP (data
))
8107 image_error ("Invalid image data `%s'", data
, Qnil
);
8110 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
8116 /* svg_load_image is a helper function for svg_load, which does the
8117 actual loading given contents and size, apart from frame and image
8118 structures, passed from svg_load.
8120 Uses librsvg to do most of the image processing.
8122 Returns non-zero when successful. */
8124 svg_load_image (struct frame
*f
, /* Pointer to emacs frame structure. */
8125 struct image
*img
, /* Pointer to emacs image structure. */
8126 unsigned char *contents
, /* String containing the SVG XML data to be parsed. */
8127 ptrdiff_t size
) /* Size of data in bytes. */
8129 RsvgHandle
*rsvg_handle
;
8130 RsvgDimensionData dimension_data
;
8135 const guint8
*pixels
;
8138 Lisp_Object specified_bg
;
8143 /* g_type_init is a glib function that must be called prior to using
8144 gnome type library functions. */
8146 /* Make a handle to a new rsvg object. */
8147 rsvg_handle
= fn_rsvg_handle_new ();
8149 /* Parse the contents argument and fill in the rsvg_handle. */
8150 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &err
);
8151 if (err
) goto rsvg_error
;
8153 /* The parsing is complete, rsvg_handle is ready to used, close it
8154 for further writes. */
8155 fn_rsvg_handle_close (rsvg_handle
, &err
);
8156 if (err
) goto rsvg_error
;
8158 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
8159 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
8161 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8165 /* We can now get a valid pixel buffer from the svg file, if all
8167 pixbuf
= fn_rsvg_handle_get_pixbuf (rsvg_handle
);
8168 if (!pixbuf
) goto rsvg_error
;
8169 fn_g_object_unref (rsvg_handle
);
8171 /* Extract some meta data from the svg handle. */
8172 width
= fn_gdk_pixbuf_get_width (pixbuf
);
8173 height
= fn_gdk_pixbuf_get_height (pixbuf
);
8174 pixels
= fn_gdk_pixbuf_get_pixels (pixbuf
);
8175 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
8177 /* Validate the svg meta data. */
8178 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
8179 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
8180 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
8181 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
8183 /* Try to create a x pixmap to hold the svg pixmap. */
8184 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8186 fn_g_object_unref (pixbuf
);
8190 init_color_table ();
8192 /* Handle alpha channel by combining the image with a background
8194 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8195 if (!STRINGP (specified_bg
)
8196 || !x_defined_color (f
, SSDATA (specified_bg
), &background
, 0))
8199 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8200 x_query_color (f
, &background
);
8202 ns_query_color (FRAME_BACKGROUND_COLOR (f
), &background
, 1);
8206 /* SVG pixmaps specify transparency in the last byte, so right
8207 shift 8 bits to get rid of it, since emacs doesn't support
8209 background
.red
>>= 8;
8210 background
.green
>>= 8;
8211 background
.blue
>>= 8;
8213 /* This loop handles opacity values, since Emacs assumes
8214 non-transparent images. Each pixel must be "flattened" by
8215 calculating the resulting color, given the transparency of the
8216 pixel, and the image background color. */
8217 for (y
= 0; y
< height
; ++y
)
8219 for (x
= 0; x
< width
; ++x
)
8229 opacity
= *pixels
++;
8231 red
= ((red
* opacity
)
8232 + (background
.red
* ((1 << 8) - opacity
)));
8233 green
= ((green
* opacity
)
8234 + (background
.green
* ((1 << 8) - opacity
)));
8235 blue
= ((blue
* opacity
)
8236 + (background
.blue
* ((1 << 8) - opacity
)));
8238 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
8241 pixels
+= rowstride
- 4 * width
;
8244 #ifdef COLOR_TABLE_SUPPORT
8245 /* Remember colors allocated for this image. */
8246 img
->colors
= colors_in_color_table (&img
->ncolors
);
8247 free_color_table ();
8248 #endif /* COLOR_TABLE_SUPPORT */
8250 fn_g_object_unref (pixbuf
);
8253 img
->height
= height
;
8255 /* Maybe fill in the background field while we have ximg handy.
8256 Casting avoids a GCC warning. */
8257 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
8259 /* Put the image into the pixmap, then free the X image and its
8261 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8262 x_destroy_x_image (ximg
);
8267 fn_g_object_unref (rsvg_handle
);
8268 /* FIXME: Use error->message so the user knows what is the actual
8269 problem with the image. */
8270 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
8271 fn_g_error_free (err
);
8275 #endif /* defined (HAVE_RSVG) */
8280 /***********************************************************************
8282 ***********************************************************************/
8284 #ifdef HAVE_X_WINDOWS
8285 #define HAVE_GHOSTSCRIPT 1
8286 #endif /* HAVE_X_WINDOWS */
8288 #ifdef HAVE_GHOSTSCRIPT
8290 static int gs_image_p (Lisp_Object object
);
8291 static int gs_load (struct frame
*f
, struct image
*img
);
8292 static void gs_clear_image (struct frame
*f
, struct image
*img
);
8294 /* Keyword symbols. */
8296 static Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8298 /* Indices of image specification fields in gs_format, below. */
8300 enum gs_keyword_index
8318 /* Vector of image_keyword structures describing the format
8319 of valid user-defined image specifications. */
8321 static const struct image_keyword gs_format
[GS_LAST
] =
8323 {":type", IMAGE_SYMBOL_VALUE
, 1},
8324 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8325 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8326 {":file", IMAGE_STRING_VALUE
, 1},
8327 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8328 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8329 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8330 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8331 {":relief", IMAGE_INTEGER_VALUE
, 0},
8332 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8333 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8334 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8335 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8338 /* Structure describing the image type `ghostscript'. */
8340 static struct image_type gs_type
=
8350 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8353 gs_clear_image (struct frame
*f
, struct image
*img
)
8355 x_clear_image (f
, img
);
8359 /* Return non-zero if OBJECT is a valid Ghostscript image
8363 gs_image_p (Lisp_Object object
)
8365 struct image_keyword fmt
[GS_LAST
];
8369 memcpy (fmt
, gs_format
, sizeof fmt
);
8371 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8374 /* Bounding box must be a list or vector containing 4 integers. */
8375 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8378 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8379 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8384 else if (VECTORP (tem
))
8386 if (ASIZE (tem
) != 4)
8388 for (i
= 0; i
< 4; ++i
)
8389 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8399 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8403 gs_load (struct frame
*f
, struct image
*img
)
8406 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8408 double in_width
, in_height
;
8409 Lisp_Object pixel_colors
= Qnil
;
8411 /* Compute pixel size of pixmap needed from the given size in the
8412 image specification. Sizes in the specification are in pt. 1 pt
8413 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8415 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8416 in_width
= INTEGERP (pt_width
) ? XFASTINT (pt_width
) / 72.0 : 0;
8417 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8418 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8419 in_height
= INTEGERP (pt_height
) ? XFASTINT (pt_height
) / 72.0 : 0;
8420 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8422 if (!check_image_size (f
, img
->width
, img
->height
))
8424 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8428 /* Create the pixmap. */
8429 xassert (img
->pixmap
== NO_PIXMAP
);
8431 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8433 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8434 img
->width
, img
->height
,
8435 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8440 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8444 /* Call the loader to fill the pixmap. It returns a process object
8445 if successful. We do not record_unwind_protect here because
8446 other places in redisplay like calling window scroll functions
8447 don't either. Let the Lisp loader use `unwind-protect' instead. */
8448 sprintf (buffer
, "%lu %lu",
8449 (unsigned long) FRAME_X_WINDOW (f
),
8450 (unsigned long) img
->pixmap
);
8451 window_and_pixmap_id
= build_string (buffer
);
8453 sprintf (buffer
, "%lu %lu",
8454 FRAME_FOREGROUND_PIXEL (f
),
8455 FRAME_BACKGROUND_PIXEL (f
));
8456 pixel_colors
= build_string (buffer
);
8458 XSETFRAME (frame
, f
);
8459 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8461 loader
= intern ("gs-load-image");
8463 img
->lisp_data
= call6 (loader
, frame
, img
->spec
,
8464 make_number (img
->width
),
8465 make_number (img
->height
),
8466 window_and_pixmap_id
,
8468 return PROCESSP (img
->lisp_data
);
8472 /* Kill the Ghostscript process that was started to fill PIXMAP on
8473 frame F. Called from XTread_socket when receiving an event
8474 telling Emacs that Ghostscript has finished drawing. */
8477 x_kill_gs_process (Pixmap pixmap
, struct frame
*f
)
8479 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
8483 /* Find the image containing PIXMAP. */
8484 for (i
= 0; i
< c
->used
; ++i
)
8485 if (c
->images
[i
]->pixmap
== pixmap
)
8488 /* Should someone in between have cleared the image cache, for
8489 instance, give up. */
8493 /* Kill the GS process. We should have found PIXMAP in the image
8494 cache and its image should contain a process object. */
8496 xassert (PROCESSP (img
->lisp_data
));
8497 Fkill_process (img
->lisp_data
, Qnil
);
8498 img
->lisp_data
= Qnil
;
8500 #if defined (HAVE_X_WINDOWS)
8502 /* On displays with a mutable colormap, figure out the colors
8503 allocated for the image by looking at the pixels of an XImage for
8505 class = FRAME_X_VISUAL (f
)->class;
8506 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8512 /* Try to get an XImage for img->pixmep. */
8513 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8514 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8519 /* Initialize the color table. */
8520 init_color_table ();
8522 /* For each pixel of the image, look its color up in the
8523 color table. After having done so, the color table will
8524 contain an entry for each color used by the image. */
8525 for (y
= 0; y
< img
->height
; ++y
)
8526 for (x
= 0; x
< img
->width
; ++x
)
8528 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8529 lookup_pixel_color (f
, pixel
);
8532 /* Record colors in the image. Free color table and XImage. */
8533 #ifdef COLOR_TABLE_SUPPORT
8534 img
->colors
= colors_in_color_table (&img
->ncolors
);
8535 free_color_table ();
8537 XDestroyImage (ximg
);
8539 #if 0 /* This doesn't seem to be the case. If we free the colors
8540 here, we get a BadAccess later in x_clear_image when
8541 freeing the colors. */
8542 /* We have allocated colors once, but Ghostscript has also
8543 allocated colors on behalf of us. So, to get the
8544 reference counts right, free them once. */
8546 x_free_colors (f
, img
->colors
, img
->ncolors
);
8550 image_error ("Cannot get X image of `%s'; colors will not be freed",
8555 #endif /* HAVE_X_WINDOWS */
8557 /* Now that we have the pixmap, compute mask and transform the
8558 image if requested. */
8560 postprocess_image (f
, img
);
8564 #endif /* HAVE_GHOSTSCRIPT */
8567 /***********************************************************************
8569 ***********************************************************************/
8573 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8574 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8577 return valid_image_p (spec
) ? Qt
: Qnil
;
8581 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8586 if (valid_image_p (spec
))
8587 id
= lookup_image (SELECTED_FRAME (), spec
);
8590 return make_number (id
);
8593 #endif /* GLYPH_DEBUG != 0 */
8596 /***********************************************************************
8598 ***********************************************************************/
8601 /* Image types that rely on external libraries are loaded dynamically
8602 if the library is available. */
8603 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8604 define_image_type (image_type, init_lib_fn (libraries))
8606 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8607 define_image_type (image_type, 1)
8608 #endif /* HAVE_NTGUI */
8610 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8611 doc
: /* Initialize image library implementing image type TYPE.
8612 Return non-nil if TYPE is a supported image type.
8614 Image types pbm and xbm are prebuilt; other types are loaded here.
8615 Libraries to load are specified in alist LIBRARIES (usually, the value
8616 of `dynamic-library-alist', which see). */)
8617 (Lisp_Object type
, Lisp_Object libraries
)
8620 /* Don't try to reload the library. */
8621 Lisp_Object tested
= Fassq (type
, Vlibrary_cache
);
8623 return XCDR (tested
);
8626 /* Types pbm and xbm are built-in and always available. */
8627 if (EQ (type
, Qpbm
) || EQ (type
, Qxbm
))
8630 #if defined (HAVE_XPM) || defined (HAVE_NS)
8631 if (EQ (type
, Qxpm
))
8632 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8635 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8636 if (EQ (type
, Qjpeg
))
8637 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8640 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8641 if (EQ (type
, Qtiff
))
8642 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8645 #if defined (HAVE_GIF) || defined (HAVE_NS)
8646 if (EQ (type
, Qgif
))
8647 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8650 #if defined (HAVE_PNG) || defined (HAVE_NS)
8651 if (EQ (type
, Qpng
))
8652 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8655 #if defined (HAVE_RSVG)
8656 if (EQ (type
, Qsvg
))
8657 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8660 #if defined (HAVE_IMAGEMAGICK)
8661 if (EQ (type
, Qimagemagick
))
8662 return CHECK_LIB_AVAILABLE (&imagemagick_type
, init_imagemagick_functions
,
8666 #ifdef HAVE_GHOSTSCRIPT
8667 if (EQ (type
, Qpostscript
))
8668 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8671 /* If the type is not recognized, avoid testing it ever again. */
8672 CACHE_IMAGE_TYPE (type
, Qnil
);
8677 syms_of_image (void)
8679 /* Initialize this only once, since that's what we do with Vimage_types
8680 and they are supposed to be in sync. Initializing here gives correct
8681 operation on GNU/Linux of calling dump-emacs after loading some images. */
8684 /* Must be defined now becase we're going to update it below, while
8685 defining the supported image types. */
8686 DEFVAR_LISP ("image-types", Vimage_types
,
8687 doc
: /* List of potentially supported image types.
8688 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8689 To check whether it is really supported, use `image-type-available-p'. */);
8690 Vimage_types
= Qnil
;
8692 DEFVAR_LISP ("max-image-size", Vmax_image_size
,
8693 doc
: /* Maximum size of images.
8694 Emacs will not load an image into memory if its pixel width or
8695 pixel height exceeds this limit.
8697 If the value is an integer, it directly specifies the maximum
8698 image height and width, measured in pixels. If it is a floating
8699 point number, it specifies the maximum image height and width
8700 as a ratio to the frame height and width. If the value is
8701 non-numeric, there is no explicit limit on the size of images. */);
8702 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8704 DEFSYM (Qpbm
, "pbm");
8705 ADD_IMAGE_TYPE (Qpbm
);
8707 DEFSYM (Qxbm
, "xbm");
8708 ADD_IMAGE_TYPE (Qxbm
);
8710 define_image_type (&xbm_type
, 1);
8711 define_image_type (&pbm_type
, 1);
8713 DEFSYM (Qcount
, "count");
8714 DEFSYM (Qextension_data
, "extension-data");
8715 DEFSYM (Qdelay
, "delay");
8717 DEFSYM (QCascent
, ":ascent");
8718 DEFSYM (QCmargin
, ":margin");
8719 DEFSYM (QCrelief
, ":relief");
8720 DEFSYM (QCconversion
, ":conversion");
8721 DEFSYM (QCcolor_symbols
, ":color-symbols");
8722 DEFSYM (QCheuristic_mask
, ":heuristic-mask");
8723 DEFSYM (QCindex
, ":index");
8724 DEFSYM (QCgeometry
, ":geometry");
8725 DEFSYM (QCcrop
, ":crop");
8726 DEFSYM (QCrotation
, ":rotation");
8727 DEFSYM (QCmatrix
, ":matrix");
8728 DEFSYM (QCcolor_adjustment
, ":color-adjustment");
8729 DEFSYM (QCmask
, ":mask");
8731 DEFSYM (Qlaplace
, "laplace");
8732 DEFSYM (Qemboss
, "emboss");
8733 DEFSYM (Qedge_detection
, "edge-detection");
8734 DEFSYM (Qheuristic
, "heuristic");
8736 DEFSYM (Qpostscript
, "postscript");
8737 #ifdef HAVE_GHOSTSCRIPT
8738 ADD_IMAGE_TYPE (Qpostscript
);
8739 DEFSYM (QCloader
, ":loader");
8740 DEFSYM (QCbounding_box
, ":bounding-box");
8741 DEFSYM (QCpt_width
, ":pt-width");
8742 DEFSYM (QCpt_height
, ":pt-height");
8743 #endif /* HAVE_GHOSTSCRIPT */
8746 DEFSYM (Qlibpng_version
, "libpng-version");
8747 Fset (Qlibpng_version
,
8749 make_number (PNG_LIBPNG_VER
)
8756 #if defined (HAVE_XPM) || defined (HAVE_NS)
8757 DEFSYM (Qxpm
, "xpm");
8758 ADD_IMAGE_TYPE (Qxpm
);
8761 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8762 DEFSYM (Qjpeg
, "jpeg");
8763 ADD_IMAGE_TYPE (Qjpeg
);
8766 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8767 DEFSYM (Qtiff
, "tiff");
8768 ADD_IMAGE_TYPE (Qtiff
);
8771 #if defined (HAVE_GIF) || defined (HAVE_NS)
8772 DEFSYM (Qgif
, "gif");
8773 ADD_IMAGE_TYPE (Qgif
);
8776 #if defined (HAVE_PNG) || defined (HAVE_NS)
8777 DEFSYM (Qpng
, "png");
8778 ADD_IMAGE_TYPE (Qpng
);
8781 #if defined (HAVE_IMAGEMAGICK)
8782 DEFSYM (Qimagemagick
, "imagemagick");
8783 ADD_IMAGE_TYPE (Qimagemagick
);
8786 #if defined (HAVE_RSVG)
8787 DEFSYM (Qsvg
, "svg");
8788 ADD_IMAGE_TYPE (Qsvg
);
8790 /* Other libraries used directly by svg code. */
8791 DEFSYM (Qgdk_pixbuf
, "gdk-pixbuf");
8792 DEFSYM (Qglib
, "glib");
8793 DEFSYM (Qgobject
, "gobject");
8794 #endif /* HAVE_NTGUI */
8795 #endif /* HAVE_RSVG */
8797 defsubr (&Sinit_image_library
);
8798 #ifdef HAVE_IMAGEMAGICK
8799 defsubr (&Simagemagick_types
);
8801 defsubr (&Sclear_image_cache
);
8802 defsubr (&Simage_flush
);
8803 defsubr (&Simage_size
);
8804 defsubr (&Simage_mask_p
);
8805 defsubr (&Simage_metadata
);
8809 defsubr (&Slookup_image
);
8812 DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images
,
8813 doc
: /* Non-nil means always draw a cross over disabled images.
8814 Disabled images are those having a `:conversion disabled' property.
8815 A cross is always drawn on black & white displays. */);
8816 cross_disabled_images
= 0;
8818 DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path
,
8819 doc
: /* List of directories to search for window system bitmap files. */);
8820 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8822 DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay
,
8823 doc
: /* Maximum time after which images are removed from the cache.
8824 When an image has not been displayed this many seconds, Emacs
8825 automatically removes it from the image cache. If the cache contains
8826 a large number of images, the actual eviction time may be shorter.
8827 The value can also be nil, meaning the cache is never cleared.
8829 The function `clear-image-cache' disregards this variable. */);
8830 Vimage_cache_eviction_delay
= make_number (300);
8831 #ifdef HAVE_IMAGEMAGICK
8832 DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type
,
8833 doc
: /* Choose between ImageMagick render methods. */);