1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992-2011 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #if defined HAVE_LIBPNG_PNG_H
27 # include <libpng/png.h>
35 /* This makes the fields of a Display accessible, in Xlib header files. */
37 #define XLIB_ILLEGAL_ACCESS
42 #include "dispextern.h"
43 #include "blockinput.h"
46 #include "character.h"
48 #include "termhooks.h"
53 #include <sys/types.h>
56 #define COLOR_TABLE_SUPPORT 1
58 typedef struct x_bitmap_record Bitmap_Record
;
59 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
60 #define NO_PIXMAP None
62 #define RGB_PIXEL_COLOR unsigned long
64 #define PIX_MASK_RETAIN 0
65 #define PIX_MASK_DRAW 1
66 #endif /* HAVE_X_WINDOWS */
72 /* W32_TODO : Color tables on W32. */
73 #undef COLOR_TABLE_SUPPORT
75 typedef struct w32_bitmap_record Bitmap_Record
;
76 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
79 #define RGB_PIXEL_COLOR COLORREF
81 #define PIX_MASK_RETAIN 0
82 #define PIX_MASK_DRAW 1
84 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
85 #define x_defined_color w32_defined_color
86 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
88 /* Functions from w32term.c that depend on XColor (so can't go in w32term.h
89 without modifying lots of files). */
90 extern void x_query_colors (struct frame
*f
, XColor
*colors
, int ncolors
);
91 extern void x_query_color (struct frame
*f
, XColor
*color
);
93 /* Version of libpng that we were compiled with, or -1 if no PNG
94 support was compiled in. This is tested by w32-win.el to correctly
95 set up the alist used to search for PNG libraries. */
96 Lisp_Object Qlibpng_version
;
97 #endif /* HAVE_NTGUI */
101 #include <sys/types.h>
102 #include <sys/stat.h>
104 #undef COLOR_TABLE_SUPPORT
106 typedef struct ns_bitmap_record Bitmap_Record
;
108 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
111 #define RGB_PIXEL_COLOR unsigned long
114 #define PIX_MASK_RETAIN 0
115 #define PIX_MASK_DRAW 1
117 #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual
118 #define x_defined_color(f, name, color_def, alloc) \
119 ns_defined_color (f, name, color_def, alloc, 0)
120 #define FRAME_X_SCREEN(f) 0
121 #define DefaultDepthOfScreen(screen) x_display_list->n_planes
125 /* The symbol `postscript' identifying images of this type. */
127 static Lisp_Object Qpostscript
;
129 static void x_disable_image (struct frame
*, struct image
*);
130 static void x_edge_detection (struct frame
*, struct image
*, Lisp_Object
,
133 static void init_color_table (void);
134 static unsigned long lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
);
135 #ifdef COLOR_TABLE_SUPPORT
136 static void free_color_table (void);
137 static unsigned long *colors_in_color_table (int *n
);
138 static unsigned long lookup_pixel_color (struct frame
*f
, unsigned long p
);
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
, int id
)
186 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
190 x_bitmap_width (FRAME_PTR f
, int id
)
192 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
195 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
197 x_bitmap_pixmap (FRAME_PTR f
, int id
)
199 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
203 #ifdef HAVE_X_WINDOWS
205 x_bitmap_mask (FRAME_PTR f
, int id
)
207 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
211 /* Allocate a new bitmap record. Returns index of new record. */
214 x_allocate_bitmap_record (FRAME_PTR f
)
216 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
219 if (dpyinfo
->bitmaps
== NULL
)
221 dpyinfo
->bitmaps_size
= 10;
223 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
224 dpyinfo
->bitmaps_last
= 1;
228 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
229 return ++dpyinfo
->bitmaps_last
;
231 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
232 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
235 dpyinfo
->bitmaps_size
*= 2;
237 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
238 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
239 return ++dpyinfo
->bitmaps_last
;
242 /* Add one reference to the reference count of the bitmap with id ID. */
245 x_reference_bitmap (FRAME_PTR f
, int id
)
247 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
250 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
253 x_create_bitmap_from_data (struct frame
*f
, char *bits
, unsigned int width
, unsigned int height
)
255 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
258 #ifdef HAVE_X_WINDOWS
260 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
261 bits
, width
, height
);
264 #endif /* HAVE_X_WINDOWS */
268 bitmap
= CreateBitmap (width
, height
,
269 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
270 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
274 #endif /* HAVE_NTGUI */
277 void *bitmap
= ns_image_from_XBM (bits
, width
, height
);
282 id
= x_allocate_bitmap_record (f
);
285 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
286 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
289 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
290 dpyinfo
->bitmaps
[id
- 1].height
= height
;
291 dpyinfo
->bitmaps
[id
- 1].width
= width
;
292 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
294 #ifdef HAVE_X_WINDOWS
295 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
296 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
297 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
298 #endif /* HAVE_X_WINDOWS */
301 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
302 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
303 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
304 #endif /* HAVE_NTGUI */
309 /* Create bitmap from file FILE for frame F. */
312 x_create_bitmap_from_file (struct frame
*f
, Lisp_Object file
)
314 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
317 return -1; /* W32_TODO : bitmap support */
318 #endif /* HAVE_NTGUI */
322 void *bitmap
= ns_image_from_file (file
);
328 id
= x_allocate_bitmap_record (f
);
329 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
330 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
331 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
332 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
333 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width (bitmap
);
334 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height (bitmap
);
335 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
339 #ifdef HAVE_X_WINDOWS
340 unsigned int width
, height
;
342 int xhot
, yhot
, result
, id
;
347 /* Look for an existing bitmap with the same name. */
348 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
350 if (dpyinfo
->bitmaps
[id
].refcount
351 && dpyinfo
->bitmaps
[id
].file
352 && !strcmp (dpyinfo
->bitmaps
[id
].file
, SSDATA (file
)))
354 ++dpyinfo
->bitmaps
[id
].refcount
;
359 /* Search bitmap-file-path for the file, if appropriate. */
360 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
365 filename
= SSDATA (found
);
367 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
368 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
369 if (result
!= BitmapSuccess
)
372 id
= x_allocate_bitmap_record (f
);
373 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
374 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
375 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
376 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
377 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
378 dpyinfo
->bitmaps
[id
- 1].height
= height
;
379 dpyinfo
->bitmaps
[id
- 1].width
= width
;
380 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SSDATA (file
));
383 #endif /* HAVE_X_WINDOWS */
389 free_bitmap_record (Display_Info
*dpyinfo
, Bitmap_Record
*bm
)
391 #ifdef HAVE_X_WINDOWS
392 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
394 XFreePixmap (dpyinfo
->display
, bm
->mask
);
395 #endif /* HAVE_X_WINDOWS */
398 DeleteObject (bm
->pixmap
);
399 #endif /* HAVE_NTGUI */
402 ns_release_object (bm
->img
);
412 /* Remove reference to bitmap with id number ID. */
415 x_destroy_bitmap (FRAME_PTR f
, int id
)
417 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
421 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
423 if (--bm
->refcount
== 0)
426 free_bitmap_record (dpyinfo
, bm
);
432 /* Free all the bitmaps for the display specified by DPYINFO. */
435 x_destroy_all_bitmaps (Display_Info
*dpyinfo
)
438 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
440 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
441 if (bm
->refcount
> 0)
442 free_bitmap_record (dpyinfo
, bm
);
444 dpyinfo
->bitmaps_last
= 0;
448 #ifdef HAVE_X_WINDOWS
450 /* Useful functions defined in the section
451 `Image type independent image structures' below. */
453 static unsigned long four_corners_best (XImagePtr ximg
,
456 unsigned long height
);
458 static int x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
,
459 int depth
, XImagePtr
*ximg
,
462 static void x_destroy_x_image (XImagePtr ximg
);
465 /* Create a mask of a bitmap. Note is this not a perfect mask.
466 It's nicer with some borders in this context */
469 x_create_bitmap_mask (struct frame
*f
, int id
)
472 XImagePtr ximg
, mask_img
;
473 unsigned long width
, height
;
476 unsigned long x
, y
, xp
, xm
, yp
, ym
;
479 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
484 pixmap
= x_bitmap_pixmap (f
, id
);
485 width
= x_bitmap_width (f
, id
);
486 height
= x_bitmap_height (f
, id
);
489 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
498 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
503 XDestroyImage (ximg
);
507 bg
= four_corners_best (ximg
, NULL
, width
, height
);
509 for (y
= 0; y
< ximg
->height
; ++y
)
511 for (x
= 0; x
< ximg
->width
; ++x
)
513 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
514 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
515 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
516 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
517 if (XGetPixel (ximg
, x
, y
) == bg
518 && XGetPixel (ximg
, x
, yp
) == bg
519 && XGetPixel (ximg
, x
, ym
) == bg
520 && XGetPixel (ximg
, xp
, y
) == bg
521 && XGetPixel (ximg
, xp
, yp
) == bg
522 && XGetPixel (ximg
, xp
, ym
) == bg
523 && XGetPixel (ximg
, xm
, y
) == bg
524 && XGetPixel (ximg
, xm
, yp
) == bg
525 && XGetPixel (ximg
, xm
, ym
) == bg
)
526 XPutPixel (mask_img
, x
, y
, 0);
528 XPutPixel (mask_img
, x
, y
, 1);
532 xassert (interrupt_input_blocked
);
533 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
534 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
536 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
538 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
539 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
541 XDestroyImage (ximg
);
542 x_destroy_x_image (mask_img
);
547 #endif /* HAVE_X_WINDOWS */
550 /***********************************************************************
552 ***********************************************************************/
554 /* List of supported image types. Use define_image_type to add new
555 types. Use lookup_image_type to find a type for a given symbol. */
557 static struct image_type
*image_types
;
559 /* Cache for delayed-loading image types. */
561 static Lisp_Object Vimage_type_cache
;
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 static Lisp_Object Qcount
, Qextension_data
;
571 Lisp_Object QCconversion
;
572 static Lisp_Object QCheuristic_mask
;
573 static Lisp_Object QCcolor_symbols
;
574 static Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
, QCgeometry
;
575 static Lisp_Object QCcrop
, QCrotation
;
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 { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
594 #define ADD_IMAGE_TYPE(type) \
595 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
597 /* Define a new image type from TYPE. This adds a copy of TYPE to
598 image_types and caches the loading status of TYPE. */
601 define_image_type (struct image_type
*type
, int loaded
)
609 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
610 The initialized data segment is read-only. */
611 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
612 memcpy (p
, type
, sizeof *p
);
613 p
->next
= image_types
;
618 CACHE_IMAGE_TYPE (*type
->type
, success
);
623 /* Look up image type SYMBOL, and return a pointer to its image_type
624 structure. Value is null if SYMBOL is not a known image type. */
626 static INLINE
struct image_type
*
627 lookup_image_type (Lisp_Object symbol
)
629 struct image_type
*type
;
631 /* We must initialize the image-type if it hasn't been already. */
632 if (NILP (Finit_image_library (symbol
, Vdynamic_library_alist
)))
633 return 0; /* unimplemented */
635 for (type
= image_types
; type
; type
= type
->next
)
636 if (EQ (symbol
, *type
->type
))
643 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
644 valid image specification is a list whose car is the symbol
645 `image', and whose rest is a property list. The property list must
646 contain a value for key `:type'. That value must be the name of a
647 supported image type. The rest of the property list depends on the
651 valid_image_p (Lisp_Object object
)
659 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
660 if (EQ (XCAR (tem
), QCtype
))
663 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
665 struct image_type
*type
;
666 type
= lookup_image_type (XCAR (tem
));
668 valid_p
= type
->valid_p (object
);
679 /* Log error message with format string FORMAT and argument ARG.
680 Signaling an error, e.g. when an image cannot be loaded, is not a
681 good idea because this would interrupt redisplay, and the error
682 message display would lead to another redisplay. This function
683 therefore simply displays a message. */
686 image_error (const char *format
, Lisp_Object arg1
, Lisp_Object arg2
)
688 add_to_log (format
, arg1
, arg2
);
693 /***********************************************************************
695 ***********************************************************************/
697 enum image_value_type
699 IMAGE_DONT_CHECK_VALUE_TYPE
,
701 IMAGE_STRING_OR_NIL_VALUE
,
703 IMAGE_POSITIVE_INTEGER_VALUE
,
704 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
705 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
708 IMAGE_FUNCTION_VALUE
,
713 /* Structure used when parsing image specifications. */
717 /* Name of keyword. */
720 /* The type of value allowed. */
721 enum image_value_type type
;
723 /* Non-zero means key must be present. */
726 /* Used to recognize duplicate keywords in a property list. */
729 /* The value that was found. */
734 static int parse_image_spec (Lisp_Object
, struct image_keyword
*,
736 static Lisp_Object
image_spec_value (Lisp_Object
, Lisp_Object
, int *);
739 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
740 has the format (image KEYWORD VALUE ...). One of the keyword/
741 value pairs must be `:type TYPE'. KEYWORDS is a vector of
742 image_keywords structures of size NKEYWORDS describing other
743 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
746 parse_image_spec (Lisp_Object spec
, struct image_keyword
*keywords
,
747 int nkeywords
, Lisp_Object type
)
756 while (CONSP (plist
))
758 Lisp_Object key
, value
;
760 /* First element of a pair must be a symbol. */
762 plist
= XCDR (plist
);
766 /* There must follow a value. */
769 value
= XCAR (plist
);
770 plist
= XCDR (plist
);
772 /* Find key in KEYWORDS. Error if not found. */
773 for (i
= 0; i
< nkeywords
; ++i
)
774 if (strcmp (keywords
[i
].name
, SSDATA (SYMBOL_NAME (key
))) == 0)
780 /* Record that we recognized the keyword. If a keywords
781 was found more than once, it's an error. */
782 keywords
[i
].value
= value
;
785 if (keywords
[i
].count
> 1)
788 /* Check type of value against allowed type. */
789 switch (keywords
[i
].type
)
791 case IMAGE_STRING_VALUE
:
792 if (!STRINGP (value
))
796 case IMAGE_STRING_OR_NIL_VALUE
:
797 if (!STRINGP (value
) && !NILP (value
))
801 case IMAGE_SYMBOL_VALUE
:
802 if (!SYMBOLP (value
))
806 case IMAGE_POSITIVE_INTEGER_VALUE
:
807 if (!INTEGERP (value
) || XINT (value
) <= 0)
811 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
812 if (INTEGERP (value
) && XINT (value
) >= 0)
815 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
816 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
820 case IMAGE_ASCENT_VALUE
:
821 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
823 else if (INTEGERP (value
)
825 && XINT (value
) <= 100)
829 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
830 if (!INTEGERP (value
) || XINT (value
) < 0)
834 case IMAGE_DONT_CHECK_VALUE_TYPE
:
837 case IMAGE_FUNCTION_VALUE
:
838 value
= indirect_function (value
);
839 if (!NILP (Ffunctionp (value
)))
843 case IMAGE_NUMBER_VALUE
:
844 if (!INTEGERP (value
) && !FLOATP (value
))
848 case IMAGE_INTEGER_VALUE
:
849 if (!INTEGERP (value
))
853 case IMAGE_BOOL_VALUE
:
854 if (!NILP (value
) && !EQ (value
, Qt
))
863 if (EQ (key
, QCtype
) && !EQ (type
, value
))
867 /* Check that all mandatory fields are present. */
868 for (i
= 0; i
< nkeywords
; ++i
)
869 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
876 /* Return the value of KEY in image specification SPEC. Value is nil
877 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
878 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
881 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
885 xassert (valid_image_p (spec
));
887 for (tail
= XCDR (spec
);
888 CONSP (tail
) && CONSP (XCDR (tail
));
889 tail
= XCDR (XCDR (tail
)))
891 if (EQ (XCAR (tail
), key
))
895 return XCAR (XCDR (tail
));
905 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
906 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
907 PIXELS non-nil means return the size in pixels, otherwise return the
908 size in canonical character units.
909 FRAME is the frame on which the image will be displayed. FRAME nil
910 or omitted means use the selected frame. */)
911 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
916 if (valid_image_p (spec
))
918 struct frame
*f
= check_x_frame (frame
);
919 int id
= lookup_image (f
, spec
);
920 struct image
*img
= IMAGE_FROM_ID (f
, id
);
921 int width
= img
->width
+ 2 * img
->hmargin
;
922 int height
= img
->height
+ 2 * img
->vmargin
;
925 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
926 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
928 size
= Fcons (make_number (width
), make_number (height
));
931 error ("Invalid image specification");
937 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
938 doc
: /* Return t if image SPEC has a mask bitmap.
939 FRAME is the frame on which the image will be displayed. FRAME nil
940 or omitted means use the selected frame. */)
941 (Lisp_Object spec
, Lisp_Object frame
)
946 if (valid_image_p (spec
))
948 struct frame
*f
= check_x_frame (frame
);
949 int id
= lookup_image (f
, spec
);
950 struct image
*img
= IMAGE_FROM_ID (f
, id
);
955 error ("Invalid image specification");
960 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
961 doc
: /* Return metadata for image SPEC.
962 FRAME is the frame on which the image will be displayed. FRAME nil
963 or omitted means use the selected frame. */)
964 (Lisp_Object spec
, Lisp_Object frame
)
969 if (valid_image_p (spec
))
971 struct frame
*f
= check_x_frame (frame
);
972 int id
= lookup_image (f
, spec
);
973 struct image
*img
= IMAGE_FROM_ID (f
, id
);
974 ext
= img
->data
.lisp_val
;
981 /***********************************************************************
982 Image type independent image structures
983 ***********************************************************************/
985 static struct image
*make_image (Lisp_Object spec
, unsigned hash
);
986 static void free_image (struct frame
*f
, struct image
*img
);
987 static int check_image_size (struct frame
*f
, int width
, int height
);
989 #define MAX_IMAGE_SIZE 6.0
990 /* Allocate and return a new image structure for image specification
991 SPEC. SPEC has a hash value of HASH. */
993 static struct image
*
994 make_image (Lisp_Object spec
, unsigned int hash
)
996 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
997 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
999 xassert (valid_image_p (spec
));
1000 memset (img
, 0, sizeof *img
);
1001 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
1002 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1003 xassert (img
->type
!= NULL
);
1005 img
->data
.lisp_val
= Qnil
;
1006 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1008 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1013 /* Free image IMG which was used on frame F, including its resources. */
1016 free_image (struct frame
*f
, struct image
*img
)
1020 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1022 /* Remove IMG from the hash table of its cache. */
1024 img
->prev
->next
= img
->next
;
1026 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1029 img
->next
->prev
= img
->prev
;
1031 c
->images
[img
->id
] = NULL
;
1033 /* Free resources, then free IMG. */
1034 img
->type
->free (f
, img
);
1039 /* Return 1 if the given widths and heights are valid for display;
1040 otherwise, return 0. */
1043 check_image_size (struct frame
*f
, int width
, int height
)
1047 if (width
<= 0 || height
<= 0)
1050 if (INTEGERP (Vmax_image_size
))
1051 w
= h
= XINT (Vmax_image_size
);
1052 else if (FLOATP (Vmax_image_size
))
1056 w
= FRAME_PIXEL_WIDTH (f
);
1057 h
= FRAME_PIXEL_HEIGHT (f
);
1060 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1061 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1062 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1067 return (width
<= w
&& height
<= 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))
1370 /* This isn't called frequently so we get away with simply
1371 reallocating the color vector to the needed size, here. */
1374 (unsigned long *) xrealloc (img
->colors
,
1375 img
->ncolors
* sizeof *img
->colors
);
1376 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1377 result
= color
.pixel
;
1387 /***********************************************************************
1389 ***********************************************************************/
1391 static struct image
*search_image_cache (struct frame
*, Lisp_Object
, unsigned);
1392 static void cache_image (struct frame
*f
, struct image
*img
);
1393 static void postprocess_image (struct frame
*, struct image
*);
1395 /* Return a new, initialized image cache that is allocated from the
1396 heap. Call free_image_cache to free an image cache. */
1398 struct image_cache
*
1399 make_image_cache (void)
1401 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1404 memset (c
, 0, sizeof *c
);
1406 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1407 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1408 c
->buckets
= (struct image
**) xmalloc (size
);
1409 memset (c
->buckets
, 0, size
);
1414 /* Find an image matching SPEC in the cache, and return it. If no
1415 image is found, return NULL. */
1416 static struct image
*
1417 search_image_cache (struct frame
*f
, Lisp_Object spec
, unsigned int hash
)
1420 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1421 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1423 if (!c
) return NULL
;
1425 /* If the image spec does not specify a background color, the cached
1426 image must have the same background color as the current frame.
1427 The foreground color must also match, for the sake of monochrome
1430 In fact, we could ignore the foreground color matching condition
1431 for color images, or if the image spec specifies :foreground;
1432 similarly we could ignore the background color matching condition
1433 for formats that don't use transparency (such as jpeg), or if the
1434 image spec specifies :background. However, the extra memory
1435 usage is probably negligible in practice, so we don't bother. */
1437 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1438 if (img
->hash
== hash
1439 && !NILP (Fequal (img
->spec
, spec
))
1440 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1441 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1447 /* Search frame F for an image with spec SPEC, and free it. */
1450 uncache_image (struct frame
*f
, Lisp_Object spec
)
1452 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1455 free_image (f
, img
);
1456 /* As display glyphs may still be referring to the image ID, we
1457 must garbage the frame (Bug#6426). */
1458 SET_FRAME_GARBAGED (f
);
1463 /* Free image cache of frame F. Be aware that X frames share images
1467 free_image_cache (struct frame
*f
)
1469 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1474 /* Cache should not be referenced by any frame when freed. */
1475 xassert (c
->refcount
== 0);
1477 for (i
= 0; i
< c
->used
; ++i
)
1478 free_image (f
, c
->images
[i
]);
1482 FRAME_IMAGE_CACHE (f
) = NULL
;
1487 /* Clear image cache of frame F. FILTER=t means free all images.
1488 FILTER=nil means clear only images that haven't been
1489 displayed for some time.
1490 Else, only free the images which have FILTER in their `dependencies'.
1491 Should be called from time to time to reduce the number of loaded images.
1492 If image-cache-eviction-delay is non-nil, this frees images in the cache
1493 which weren't displayed for at least that many seconds. */
1496 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1498 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1504 /* Block input so that we won't be interrupted by a SIGIO
1505 while being in an inconsistent state. */
1510 /* Filter image cache. */
1511 for (i
= 0; i
< c
->used
; ++i
)
1513 struct image
*img
= c
->images
[i
];
1514 if (img
&& (EQ (Qt
, filter
)
1515 || !NILP (Fmember (filter
, img
->dependencies
))))
1517 free_image (f
, img
);
1522 else if (INTEGERP (Vimage_cache_eviction_delay
))
1524 /* Free cache based on timestamp. */
1527 int delay
, nimages
= 0;
1529 for (i
= 0; i
< c
->used
; ++i
)
1533 /* If the number of cached images has grown unusually large,
1534 decrease the cache eviction delay (Bug#6230). */
1535 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1537 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1540 old
= EMACS_SECS (t
) - delay
;
1542 for (i
= 0; i
< c
->used
; ++i
)
1544 struct image
*img
= c
->images
[i
];
1545 if (img
&& img
->timestamp
< old
)
1547 free_image (f
, img
);
1553 /* We may be clearing the image cache because, for example,
1554 Emacs was iconified for a longer period of time. In that
1555 case, current matrices may still contain references to
1556 images freed above. So, clear these matrices. */
1559 Lisp_Object tail
, frame
;
1561 FOR_EACH_FRAME (tail
, frame
)
1563 struct frame
*fr
= XFRAME (frame
);
1564 if (FRAME_IMAGE_CACHE (fr
) == c
)
1565 clear_current_matrices (fr
);
1568 ++windows_or_buffers_changed
;
1576 clear_image_caches (Lisp_Object filter
)
1578 /* FIXME: We want to do
1579 * struct terminal *t;
1580 * for (t = terminal_list; t; t = t->next_terminal)
1581 * clear_image_cache (t, filter); */
1582 Lisp_Object tail
, frame
;
1583 FOR_EACH_FRAME (tail
, frame
)
1584 if (FRAME_WINDOW_P (XFRAME (frame
)))
1585 clear_image_cache (XFRAME (frame
), filter
);
1588 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1590 doc
: /* Clear the image cache.
1591 FILTER nil or a frame means clear all images in the selected frame.
1592 FILTER t means clear the image caches of all frames.
1593 Anything else, means only clear those images which refer to FILTER,
1594 which is then usually a filename. */)
1595 (Lisp_Object filter
)
1597 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1598 clear_image_caches (filter
);
1600 clear_image_cache (check_x_frame (filter
), Qt
);
1606 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1608 doc
: /* Fush the image with specification SPEC on frame FRAME.
1609 This removes the image from the Emacs image cache. If SPEC specifies
1610 an image file, the next redisplay of this image will read from the
1611 current contents of that file.
1613 FRAME nil or omitted means use the selected frame.
1614 FRAME t means refresh the image on all frames. */)
1615 (Lisp_Object spec
, Lisp_Object frame
)
1617 if (!valid_image_p (spec
))
1618 error ("Invalid image specification");
1623 FOR_EACH_FRAME (tail
, frame
)
1625 struct frame
*f
= XFRAME (frame
);
1626 if (FRAME_WINDOW_P (f
))
1627 uncache_image (f
, spec
);
1631 uncache_image (check_x_frame (frame
), spec
);
1637 /* Compute masks and transform image IMG on frame F, as specified
1638 by the image's specification, */
1641 postprocess_image (struct frame
*f
, struct image
*img
)
1643 /* Manipulation of the image's mask. */
1646 Lisp_Object conversion
, spec
;
1651 /* `:heuristic-mask t'
1653 means build a mask heuristically.
1654 `:heuristic-mask (R G B)'
1655 `:mask (heuristic (R G B))'
1656 means build a mask from color (R G B) in the
1659 means remove a mask, if any. */
1661 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1663 x_build_heuristic_mask (f
, img
, mask
);
1668 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1670 if (EQ (mask
, Qheuristic
))
1671 x_build_heuristic_mask (f
, img
, Qt
);
1672 else if (CONSP (mask
)
1673 && EQ (XCAR (mask
), Qheuristic
))
1675 if (CONSP (XCDR (mask
)))
1676 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1678 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1680 else if (NILP (mask
) && found_p
&& img
->mask
)
1682 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1683 img
->mask
= NO_PIXMAP
;
1688 /* Should we apply an image transformation algorithm? */
1689 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1690 if (EQ (conversion
, Qdisabled
))
1691 x_disable_image (f
, img
);
1692 else if (EQ (conversion
, Qlaplace
))
1694 else if (EQ (conversion
, Qemboss
))
1696 else if (CONSP (conversion
)
1697 && EQ (XCAR (conversion
), Qedge_detection
))
1700 tem
= XCDR (conversion
);
1702 x_edge_detection (f
, img
,
1703 Fplist_get (tem
, QCmatrix
),
1704 Fplist_get (tem
, QCcolor_adjustment
));
1710 /* Return the id of image with Lisp specification SPEC on frame F.
1711 SPEC must be a valid Lisp image specification (see valid_image_p). */
1714 lookup_image (struct frame
*f
, Lisp_Object spec
)
1720 /* F must be a window-system frame, and SPEC must be a valid image
1722 xassert (FRAME_WINDOW_P (f
));
1723 xassert (valid_image_p (spec
));
1725 /* Look up SPEC in the hash table of the image cache. */
1726 hash
= sxhash (spec
, 0);
1727 img
= search_image_cache (f
, spec
, hash
);
1728 if (img
&& img
->load_failed_p
)
1730 free_image (f
, img
);
1734 /* If not found, create a new image and cache it. */
1738 img
= make_image (spec
, hash
);
1739 cache_image (f
, img
);
1740 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1741 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1742 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1744 /* If we can't load the image, and we don't have a width and
1745 height, use some arbitrary width and height so that we can
1746 draw a rectangle for it. */
1747 if (img
->load_failed_p
)
1751 value
= image_spec_value (spec
, QCwidth
, NULL
);
1752 img
->width
= (INTEGERP (value
)
1753 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1754 value
= image_spec_value (spec
, QCheight
, NULL
);
1755 img
->height
= (INTEGERP (value
)
1756 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1760 /* Handle image type independent image attributes
1761 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1762 `:background COLOR'. */
1763 Lisp_Object ascent
, margin
, relief
, bg
;
1765 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1766 if (INTEGERP (ascent
))
1767 img
->ascent
= XFASTINT (ascent
);
1768 else if (EQ (ascent
, Qcenter
))
1769 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1771 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1772 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1773 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1774 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1775 && INTEGERP (XCDR (margin
)))
1777 if (XINT (XCAR (margin
)) > 0)
1778 img
->hmargin
= XFASTINT (XCAR (margin
));
1779 if (XINT (XCDR (margin
)) > 0)
1780 img
->vmargin
= XFASTINT (XCDR (margin
));
1783 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1784 if (INTEGERP (relief
))
1786 img
->relief
= XINT (relief
);
1787 img
->hmargin
+= eabs (img
->relief
);
1788 img
->vmargin
+= eabs (img
->relief
);
1791 if (! img
->background_valid
)
1793 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1797 = x_alloc_image_color (f
, img
, bg
,
1798 FRAME_BACKGROUND_PIXEL (f
));
1799 img
->background_valid
= 1;
1803 /* Do image transformations and compute masks, unless we
1804 don't have the image yet. */
1805 if (!EQ (*img
->type
->type
, Qpostscript
))
1806 postprocess_image (f
, img
);
1812 /* We're using IMG, so set its timestamp to `now'. */
1813 EMACS_GET_TIME (now
);
1814 img
->timestamp
= EMACS_SECS (now
);
1816 /* Value is the image id. */
1821 /* Cache image IMG in the image cache of frame F. */
1824 cache_image (struct frame
*f
, struct image
*img
)
1826 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1829 /* Find a free slot in c->images. */
1830 for (i
= 0; i
< c
->used
; ++i
)
1831 if (c
->images
[i
] == NULL
)
1834 /* If no free slot found, maybe enlarge c->images. */
1835 if (i
== c
->used
&& c
->used
== c
->size
)
1838 c
->images
= (struct image
**) xrealloc (c
->images
,
1839 c
->size
* sizeof *c
->images
);
1842 /* Add IMG to c->images, and assign IMG an id. */
1848 /* Add IMG to the cache's hash table. */
1849 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1850 img
->next
= c
->buckets
[i
];
1852 img
->next
->prev
= img
;
1854 c
->buckets
[i
] = img
;
1858 /* Call FN on every image in the image cache of frame F. Used to mark
1859 Lisp Objects in the image cache. */
1861 /* Mark Lisp objects in image IMG. */
1864 mark_image (struct image
*img
)
1866 mark_object (img
->spec
);
1867 mark_object (img
->dependencies
);
1869 if (!NILP (img
->data
.lisp_val
))
1870 mark_object (img
->data
.lisp_val
);
1875 mark_image_cache (struct image_cache
*c
)
1880 for (i
= 0; i
< c
->used
; ++i
)
1882 mark_image (c
->images
[i
]);
1888 /***********************************************************************
1889 X / NS / W32 support code
1890 ***********************************************************************/
1894 /* Macro for defining functions that will be loaded from image DLLs. */
1895 #define DEF_IMGLIB_FN(rettype,func,args) rettype (FAR CDECL *fn_##func)args
1897 /* Macro for loading those image functions from the library. */
1898 #define LOAD_IMGLIB_FN(lib,func) { \
1899 fn_##func = (void *) GetProcAddress (lib, #func); \
1900 if (!fn_##func) return 0; \
1903 /* Load a DLL implementing an image type.
1904 The argument LIBRARIES is usually the variable
1905 `dynamic-library-alist', which associates a symbol, identifying
1906 an external DLL library, to a list of possible filenames.
1907 The function returns NULL if no library could be loaded for
1908 the given symbol, or if the library was previously loaded;
1909 else the handle of the DLL. */
1911 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
1913 HMODULE library
= NULL
;
1915 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
1917 Lisp_Object dlls
= Fassq (type
, libraries
);
1920 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
1922 CHECK_STRING_CAR (dlls
);
1923 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
1931 #endif /* HAVE_NTGUI */
1933 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1934 XImagePtr
*, Pixmap
*);
1935 static void x_destroy_x_image (XImagePtr
);
1936 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1939 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1940 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1941 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1942 via xmalloc. Print error messages via image_error if an error
1943 occurs. Value is non-zero if successful.
1945 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1946 should indicate the bit depth of the image. */
1949 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1950 XImagePtr
*ximg
, Pixmap
*pixmap
)
1952 #ifdef HAVE_X_WINDOWS
1953 Display
*display
= FRAME_X_DISPLAY (f
);
1954 Window window
= FRAME_X_WINDOW (f
);
1955 Screen
*screen
= FRAME_X_SCREEN (f
);
1957 xassert (interrupt_input_blocked
);
1960 depth
= DefaultDepthOfScreen (screen
);
1961 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1962 depth
, ZPixmap
, 0, NULL
, width
, height
,
1963 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1966 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1970 /* Allocate image raster. */
1971 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1973 /* Allocate a pixmap of the same size. */
1974 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1975 if (*pixmap
== NO_PIXMAP
)
1977 x_destroy_x_image (*ximg
);
1979 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1984 #endif /* HAVE_X_WINDOWS */
1988 BITMAPINFOHEADER
*header
;
1990 int scanline_width_bits
;
1992 int palette_colors
= 0;
1997 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1998 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2000 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2004 scanline_width_bits
= width
* depth
;
2005 remainder
= scanline_width_bits
% 32;
2008 scanline_width_bits
+= 32 - remainder
;
2010 /* Bitmaps with a depth less than 16 need a palette. */
2011 /* BITMAPINFO structure already contains the first RGBQUAD. */
2013 palette_colors
= 1 << depth
- 1;
2015 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2018 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2022 header
= &(*ximg
)->info
.bmiHeader
;
2023 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
2024 header
->biSize
= sizeof (*header
);
2025 header
->biWidth
= width
;
2026 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2027 header
->biPlanes
= 1;
2028 header
->biBitCount
= depth
;
2029 header
->biCompression
= BI_RGB
;
2030 header
->biClrUsed
= palette_colors
;
2032 /* TODO: fill in palette. */
2035 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2036 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2037 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2038 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2039 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2040 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2041 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2042 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2045 hdc
= get_frame_dc (f
);
2047 /* Create a DIBSection and raster array for the bitmap,
2048 and store its handle in *pixmap. */
2049 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2050 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2051 /* casting avoids a GCC warning */
2052 (void **)&((*ximg
)->data
), NULL
, 0);
2054 /* Realize display palette and garbage all frames. */
2055 release_frame_dc (f
, hdc
);
2057 if (*pixmap
== NULL
)
2059 DWORD err
= GetLastError ();
2060 Lisp_Object errcode
;
2061 /* All system errors are < 10000, so the following is safe. */
2062 XSETINT (errcode
, (int) err
);
2063 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2064 x_destroy_x_image (*ximg
);
2070 #endif /* HAVE_NTGUI */
2073 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2077 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2086 /* Destroy XImage XIMG. Free XIMG->data. */
2089 x_destroy_x_image (XImagePtr ximg
)
2091 xassert (interrupt_input_blocked
);
2094 #ifdef HAVE_X_WINDOWS
2097 XDestroyImage (ximg
);
2098 #endif /* HAVE_X_WINDOWS */
2100 /* Data will be freed by DestroyObject. */
2103 #endif /* HAVE_NTGUI */
2105 ns_release_object (ximg
);
2106 #endif /* HAVE_NS */
2111 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2112 are width and height of both the image and pixmap. */
2115 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2117 #ifdef HAVE_X_WINDOWS
2120 xassert (interrupt_input_blocked
);
2121 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2122 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2123 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2124 #endif /* HAVE_X_WINDOWS */
2127 #if 0 /* I don't think this is necessary looking at where it is used. */
2128 HDC hdc
= get_frame_dc (f
);
2129 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2130 release_frame_dc (f
, hdc
);
2132 #endif /* HAVE_NTGUI */
2135 xassert (ximg
== pixmap
);
2136 ns_retain_object (ximg
);
2141 /***********************************************************************
2143 ***********************************************************************/
2145 static unsigned char *slurp_file (char *, int *);
2148 /* Find image file FILE. Look in data-directory/images, then
2149 x-bitmap-file-path. Value is the encoded full name of the file
2150 found, or nil if not found. */
2153 x_find_image_file (Lisp_Object file
)
2155 Lisp_Object file_found
, search_path
;
2158 /* TODO I think this should use something like image-load-path
2159 instead. Unfortunately, that can contain non-string elements. */
2160 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2162 Vx_bitmap_file_path
);
2164 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2165 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2171 file_found
= ENCODE_FILE (file_found
);
2179 /* Read FILE into memory. Value is a pointer to a buffer allocated
2180 with xmalloc holding FILE's contents. Value is null if an error
2181 occurred. *SIZE is set to the size of the file. */
2183 static unsigned char *
2184 slurp_file (char *file
, int *size
)
2187 unsigned char *buf
= NULL
;
2190 if (stat (file
, &st
) == 0
2191 && (fp
= fopen (file
, "rb")) != NULL
2192 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2193 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2214 /***********************************************************************
2216 ***********************************************************************/
2218 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2219 static int xbm_load (struct frame
*f
, struct image
*img
);
2220 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2221 unsigned char *, unsigned char *);
2222 static int xbm_image_p (Lisp_Object object
);
2223 static int xbm_read_bitmap_data (struct frame
*f
,
2224 unsigned char *, unsigned char *,
2225 int *, int *, char **, int);
2226 static int xbm_file_p (Lisp_Object
);
2229 /* Indices of image specification fields in xbm_format, below. */
2231 enum xbm_keyword_index
2249 /* Vector of image_keyword structures describing the format
2250 of valid XBM image specifications. */
2252 static const struct image_keyword xbm_format
[XBM_LAST
] =
2254 {":type", IMAGE_SYMBOL_VALUE
, 1},
2255 {":file", IMAGE_STRING_VALUE
, 0},
2256 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2257 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2258 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2259 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2260 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2261 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2262 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2263 {":relief", IMAGE_INTEGER_VALUE
, 0},
2264 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2265 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2266 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2269 /* Structure describing the image type XBM. */
2271 static struct image_type xbm_type
=
2280 /* Tokens returned from xbm_scan. */
2289 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2290 A valid specification is a list starting with the symbol `image'
2291 The rest of the list is a property list which must contain an
2294 If the specification specifies a file to load, it must contain
2295 an entry `:file FILENAME' where FILENAME is a string.
2297 If the specification is for a bitmap loaded from memory it must
2298 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2299 WIDTH and HEIGHT are integers > 0. DATA may be:
2301 1. a string large enough to hold the bitmap data, i.e. it must
2302 have a size >= (WIDTH + 7) / 8 * HEIGHT
2304 2. a bool-vector of size >= WIDTH * HEIGHT
2306 3. a vector of strings or bool-vectors, one for each line of the
2309 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2310 may not be specified in this case because they are defined in the
2313 Both the file and data forms may contain the additional entries
2314 `:background COLOR' and `:foreground COLOR'. If not present,
2315 foreground and background of the frame on which the image is
2316 displayed is used. */
2319 xbm_image_p (Lisp_Object object
)
2321 struct image_keyword kw
[XBM_LAST
];
2323 memcpy (kw
, xbm_format
, sizeof kw
);
2324 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2327 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2329 if (kw
[XBM_FILE
].count
)
2331 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2334 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2336 /* In-memory XBM file. */
2337 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2345 /* Entries for `:width', `:height' and `:data' must be present. */
2346 if (!kw
[XBM_WIDTH
].count
2347 || !kw
[XBM_HEIGHT
].count
2348 || !kw
[XBM_DATA
].count
)
2351 data
= kw
[XBM_DATA
].value
;
2352 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2353 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2355 /* Check type of data, and width and height against contents of
2361 /* Number of elements of the vector must be >= height. */
2362 if (ASIZE (data
) < height
)
2365 /* Each string or bool-vector in data must be large enough
2366 for one line of the image. */
2367 for (i
= 0; i
< height
; ++i
)
2369 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2374 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2377 else if (BOOL_VECTOR_P (elt
))
2379 if (XBOOL_VECTOR (elt
)->size
< width
)
2386 else if (STRINGP (data
))
2389 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2392 else if (BOOL_VECTOR_P (data
))
2394 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2405 /* Scan a bitmap file. FP is the stream to read from. Value is
2406 either an enumerator from enum xbm_token, or a character for a
2407 single-character token, or 0 at end of file. If scanning an
2408 identifier, store the lexeme of the identifier in SVAL. If
2409 scanning a number, store its value in *IVAL. */
2412 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2418 /* Skip white space. */
2419 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2424 else if (isdigit (c
))
2426 int value
= 0, digit
;
2428 if (c
== '0' && *s
< end
)
2431 if (c
== 'x' || c
== 'X')
2438 else if (c
>= 'a' && c
<= 'f')
2439 digit
= c
- 'a' + 10;
2440 else if (c
>= 'A' && c
<= 'F')
2441 digit
= c
- 'A' + 10;
2444 value
= 16 * value
+ digit
;
2447 else if (isdigit (c
))
2451 && (c
= *(*s
)++, isdigit (c
)))
2452 value
= 8 * value
+ c
- '0';
2459 && (c
= *(*s
)++, isdigit (c
)))
2460 value
= 10 * value
+ c
- '0';
2468 else if (isalpha (c
) || c
== '_')
2472 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2479 else if (c
== '/' && **s
== '*')
2481 /* C-style comment. */
2483 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2497 /* Create a Windows bitmap from X bitmap data. */
2499 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2501 static unsigned char swap_nibble
[16]
2502 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2503 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2504 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2505 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2507 unsigned char *bits
, *p
;
2510 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2511 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2512 bits
= (unsigned char *) alloca (height
* w2
);
2513 memset (bits
, 0, height
* w2
);
2514 for (i
= 0; i
< height
; i
++)
2517 for (j
= 0; j
< w1
; j
++)
2519 /* Bitswap XBM bytes to match how Windows does things. */
2520 unsigned char c
= *data
++;
2521 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2522 | (swap_nibble
[(c
>>4) & 0xf]));
2525 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2531 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2532 COLORREF foreground
, COLORREF background
)
2534 HDC hdc
, old_img_dc
, new_img_dc
;
2535 HGDIOBJ old_prev
, new_prev
;
2538 hdc
= get_frame_dc (f
);
2539 old_img_dc
= CreateCompatibleDC (hdc
);
2540 new_img_dc
= CreateCompatibleDC (hdc
);
2541 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2542 release_frame_dc (f
, hdc
);
2543 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2544 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2545 /* Windows convention for mono bitmaps is black = background,
2546 white = foreground. */
2547 SetTextColor (new_img_dc
, background
);
2548 SetBkColor (new_img_dc
, foreground
);
2550 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2553 SelectObject (old_img_dc
, old_prev
);
2554 SelectObject (new_img_dc
, new_prev
);
2555 DeleteDC (old_img_dc
);
2556 DeleteDC (new_img_dc
);
2557 DeleteObject (img
->pixmap
);
2558 if (new_pixmap
== 0)
2559 fprintf (stderr
, "Failed to convert image to color.\n");
2561 img
->pixmap
= new_pixmap
;
2564 #define XBM_BIT_SHUFFLE(b) (~(b))
2568 #define XBM_BIT_SHUFFLE(b) (b)
2570 #endif /* HAVE_NTGUI */
2574 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2575 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2576 int non_default_colors
)
2580 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2582 /* If colors were specified, transfer the bitmap to a color one. */
2583 if (non_default_colors
)
2584 convert_mono_to_color_image (f
, img
, fg
, bg
);
2586 #elif defined (HAVE_NS)
2587 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2591 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2594 img
->width
, img
->height
,
2596 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2597 #endif /* !HAVE_NTGUI && !HAVE_NS */
2602 /* Replacement for XReadBitmapFileData which isn't available under old
2603 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2604 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2605 the image. Return in *DATA the bitmap data allocated with xmalloc.
2606 Value is non-zero if successful. DATA null means just test if
2607 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2608 is non-zero, inhibit the call to image_error when the image size is
2609 invalid (the bitmap remains unread). */
2612 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2613 int *width
, int *height
, char **data
,
2614 int inhibit_image_error
)
2616 unsigned char *s
= contents
;
2617 char buffer
[BUFSIZ
];
2620 int bytes_per_line
, i
, nbytes
;
2626 LA1 = xbm_scan (&s, end, buffer, &value)
2628 #define expect(TOKEN) \
2629 if (LA1 != (TOKEN)) \
2634 #define expect_ident(IDENT) \
2635 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2640 *width
= *height
= -1;
2643 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2645 /* Parse defines for width, height and hot-spots. */
2649 expect_ident ("define");
2650 expect (XBM_TK_IDENT
);
2652 if (LA1
== XBM_TK_NUMBER
)
2654 char *q
= strrchr (buffer
, '_');
2655 q
= q
? q
+ 1 : buffer
;
2656 if (strcmp (q
, "width") == 0)
2658 else if (strcmp (q
, "height") == 0)
2661 expect (XBM_TK_NUMBER
);
2664 if (!check_image_size (f
, *width
, *height
))
2666 if (!inhibit_image_error
)
2667 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2670 else if (data
== NULL
)
2673 /* Parse bits. Must start with `static'. */
2674 expect_ident ("static");
2675 if (LA1
== XBM_TK_IDENT
)
2677 if (strcmp (buffer
, "unsigned") == 0)
2680 expect_ident ("char");
2682 else if (strcmp (buffer
, "short") == 0)
2686 if (*width
% 16 && *width
% 16 < 9)
2689 else if (strcmp (buffer
, "char") == 0)
2697 expect (XBM_TK_IDENT
);
2703 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2704 nbytes
= bytes_per_line
* *height
;
2705 p
= *data
= (char *) xmalloc (nbytes
);
2709 for (i
= 0; i
< nbytes
; i
+= 2)
2712 expect (XBM_TK_NUMBER
);
2714 *p
++ = XBM_BIT_SHUFFLE (val
);
2715 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2716 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2718 if (LA1
== ',' || LA1
== '}')
2726 for (i
= 0; i
< nbytes
; ++i
)
2729 expect (XBM_TK_NUMBER
);
2731 *p
++ = XBM_BIT_SHUFFLE (val
);
2733 if (LA1
== ',' || LA1
== '}')
2758 /* Load XBM image IMG which will be displayed on frame F from buffer
2759 CONTENTS. END is the end of the buffer. Value is non-zero if
2763 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2770 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2774 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2775 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2776 int non_default_colors
= 0;
2779 xassert (img
->width
> 0 && img
->height
> 0);
2781 /* Get foreground and background colors, maybe allocate colors. */
2782 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2785 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2786 non_default_colors
= 1;
2788 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2791 background
= x_alloc_image_color (f
, img
, value
, background
);
2792 img
->background
= background
;
2793 img
->background_valid
= 1;
2794 non_default_colors
= 1;
2797 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2798 foreground
, background
,
2799 non_default_colors
);
2802 if (img
->pixmap
== NO_PIXMAP
)
2804 x_clear_image (f
, img
);
2805 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2811 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2817 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2820 xbm_file_p (Lisp_Object data
)
2823 return (STRINGP (data
)
2824 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2825 (SDATA (data
) + SBYTES (data
)),
2830 /* Fill image IMG which is used on frame F with pixmap data. Value is
2831 non-zero if successful. */
2834 xbm_load (struct frame
*f
, struct image
*img
)
2837 Lisp_Object file_name
;
2839 xassert (xbm_image_p (img
->spec
));
2841 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2842 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2843 if (STRINGP (file_name
))
2846 unsigned char *contents
;
2849 file
= x_find_image_file (file_name
);
2850 if (!STRINGP (file
))
2852 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2856 contents
= slurp_file (SSDATA (file
), &size
);
2857 if (contents
== NULL
)
2859 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2863 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2867 struct image_keyword fmt
[XBM_LAST
];
2869 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2870 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2871 int non_default_colors
= 0;
2874 int in_memory_file_p
= 0;
2876 /* See if data looks like an in-memory XBM file. */
2877 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2878 in_memory_file_p
= xbm_file_p (data
);
2880 /* Parse the image specification. */
2881 memcpy (fmt
, xbm_format
, sizeof fmt
);
2882 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2886 /* Get specified width, and height. */
2887 if (!in_memory_file_p
)
2889 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2890 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2891 xassert (img
->width
> 0 && img
->height
> 0);
2894 /* Get foreground and background colors, maybe allocate colors. */
2895 if (fmt
[XBM_FOREGROUND
].count
2896 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2898 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2900 non_default_colors
= 1;
2903 if (fmt
[XBM_BACKGROUND
].count
2904 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2906 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2908 non_default_colors
= 1;
2911 if (in_memory_file_p
)
2912 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2921 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2923 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2924 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2926 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2928 memcpy (p
, SDATA (line
), nbytes
);
2930 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2933 else if (STRINGP (data
))
2934 bits
= SSDATA (data
);
2936 bits
= (char *) XBOOL_VECTOR (data
)->data
;
2942 /* Windows mono bitmaps are reversed compared with X. */
2943 invertedBits
= bits
;
2944 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2946 bits
= (char *) alloca (nbytes
);
2947 for (i
= 0; i
< nbytes
; i
++)
2948 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2951 /* Create the pixmap. */
2953 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2954 foreground
, background
,
2955 non_default_colors
);
2960 image_error ("Unable to create pixmap for XBM image `%s'",
2962 x_clear_image (f
, img
);
2972 /***********************************************************************
2974 ***********************************************************************/
2976 #if defined (HAVE_XPM) || defined (HAVE_NS)
2978 static int xpm_image_p (Lisp_Object object
);
2979 static int xpm_load (struct frame
*f
, struct image
*img
);
2980 static int xpm_valid_color_symbols_p (Lisp_Object
);
2982 #endif /* HAVE_XPM || HAVE_NS */
2986 /* Indicate to xpm.h that we don't have Xlib. */
2988 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
2989 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
2990 #define XColor xpm_XColor
2991 #define XImage xpm_XImage
2992 #define Display xpm_Display
2993 #define PIXEL_ALREADY_TYPEDEFED
2994 #include "X11/xpm.h"
2999 #undef PIXEL_ALREADY_TYPEDEFED
3001 #include "X11/xpm.h"
3002 #endif /* HAVE_NTGUI */
3003 #endif /* HAVE_XPM */
3005 #if defined (HAVE_XPM) || defined (HAVE_NS)
3006 /* The symbol `xpm' identifying XPM-format images. */
3008 static Lisp_Object Qxpm
;
3010 /* Indices of image specification fields in xpm_format, below. */
3012 enum xpm_keyword_index
3028 /* Vector of image_keyword structures describing the format
3029 of valid XPM image specifications. */
3031 static const struct image_keyword xpm_format
[XPM_LAST
] =
3033 {":type", IMAGE_SYMBOL_VALUE
, 1},
3034 {":file", IMAGE_STRING_VALUE
, 0},
3035 {":data", IMAGE_STRING_VALUE
, 0},
3036 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3037 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3038 {":relief", IMAGE_INTEGER_VALUE
, 0},
3039 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3040 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3041 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3042 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3043 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3046 /* Structure describing the image type XPM. */
3048 static struct image_type xpm_type
=
3057 #ifdef HAVE_X_WINDOWS
3059 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3060 functions for allocating image colors. Our own functions handle
3061 color allocation failures more gracefully than the ones on the XPM
3064 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3065 #define ALLOC_XPM_COLORS
3067 #endif /* HAVE_X_WINDOWS */
3069 #ifdef ALLOC_XPM_COLORS
3071 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3072 static void xpm_free_color_cache (void);
3073 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3074 static int xpm_color_bucket (char *);
3075 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3078 /* An entry in a hash table used to cache color definitions of named
3079 colors. This cache is necessary to speed up XPM image loading in
3080 case we do color allocations ourselves. Without it, we would need
3081 a call to XParseColor per pixel in the image. */
3083 struct xpm_cached_color
3085 /* Next in collision chain. */
3086 struct xpm_cached_color
*next
;
3088 /* Color definition (RGB and pixel color). */
3095 /* The hash table used for the color cache, and its bucket vector
3098 #define XPM_COLOR_CACHE_BUCKETS 1001
3099 static struct xpm_cached_color
**xpm_color_cache
;
3101 /* Initialize the color cache. */
3104 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3106 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3107 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3108 memset (xpm_color_cache
, 0, nbytes
);
3109 init_color_table ();
3111 if (attrs
->valuemask
& XpmColorSymbols
)
3116 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3117 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3118 attrs
->colorsymbols
[i
].value
, &color
))
3120 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3122 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3127 /* Free the color cache. */
3130 xpm_free_color_cache (void)
3132 struct xpm_cached_color
*p
, *next
;
3135 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3136 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3142 xfree (xpm_color_cache
);
3143 xpm_color_cache
= NULL
;
3144 free_color_table ();
3147 /* Return the bucket index for color named COLOR_NAME in the color
3151 xpm_color_bucket (char *color_name
)
3156 for (s
= color_name
; *s
; ++s
)
3158 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3162 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3163 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3166 static struct xpm_cached_color
*
3167 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3170 struct xpm_cached_color
*p
;
3173 bucket
= xpm_color_bucket (color_name
);
3175 nbytes
= sizeof *p
+ strlen (color_name
);
3176 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3177 strcpy (p
->name
, color_name
);
3179 p
->next
= xpm_color_cache
[bucket
];
3180 xpm_color_cache
[bucket
] = p
;
3184 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3185 return the cached definition in *COLOR. Otherwise, make a new
3186 entry in the cache and allocate the color. Value is zero if color
3187 allocation failed. */
3190 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3192 struct xpm_cached_color
*p
;
3193 int h
= xpm_color_bucket (color_name
);
3195 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3196 if (strcmp (p
->name
, color_name
) == 0)
3201 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3204 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3206 p
= xpm_cache_color (f
, color_name
, color
, h
);
3208 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3209 with transparency, and it's useful. */
3210 else if (strcmp ("opaque", color_name
) == 0)
3212 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3213 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3214 p
= xpm_cache_color (f
, color_name
, color
, h
);
3221 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3222 CLOSURE is a pointer to the frame on which we allocate the
3223 color. Return in *COLOR the allocated color. Value is non-zero
3227 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3230 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3234 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3235 is a pointer to the frame on which we allocate the color. Value is
3236 non-zero if successful. */
3239 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3244 #endif /* ALLOC_XPM_COLORS */
3249 /* XPM library details. */
3251 DEF_IMGLIB_FN (void, XpmFreeAttributes
, (XpmAttributes
*));
3252 DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer
, (Display
*, char *, xpm_XImage
**,
3253 xpm_XImage
**, XpmAttributes
*));
3254 DEF_IMGLIB_FN (int, XpmReadFileToImage
, (Display
*, char *, xpm_XImage
**,
3255 xpm_XImage
**, XpmAttributes
*));
3256 DEF_IMGLIB_FN (void, XImageFree
, (xpm_XImage
*));
3259 init_xpm_functions (Lisp_Object libraries
)
3263 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3266 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3267 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3268 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3269 LOAD_IMGLIB_FN (library
, XImageFree
);
3273 #endif /* HAVE_NTGUI */
3276 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3277 for XPM images. Such a list must consist of conses whose car and
3281 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3283 while (CONSP (color_symbols
))
3285 Lisp_Object sym
= XCAR (color_symbols
);
3287 || !STRINGP (XCAR (sym
))
3288 || !STRINGP (XCDR (sym
)))
3290 color_symbols
= XCDR (color_symbols
);
3293 return NILP (color_symbols
);
3297 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3300 xpm_image_p (Lisp_Object object
)
3302 struct image_keyword fmt
[XPM_LAST
];
3303 memcpy (fmt
, xpm_format
, sizeof fmt
);
3304 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3305 /* Either `:file' or `:data' must be present. */
3306 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3307 /* Either no `:color-symbols' or it's a list of conses
3308 whose car and cdr are strings. */
3309 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3310 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3313 #endif /* HAVE_XPM || HAVE_NS */
3315 #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK
3317 x_create_bitmap_from_xpm_data (struct frame
*f
, const char **bits
)
3319 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3321 XpmAttributes attrs
;
3322 Pixmap bitmap
, mask
;
3324 memset (&attrs
, 0, sizeof attrs
);
3326 attrs
.visual
= FRAME_X_VISUAL (f
);
3327 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3328 attrs
.valuemask
|= XpmVisual
;
3329 attrs
.valuemask
|= XpmColormap
;
3331 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3332 (char **) bits
, &bitmap
, &mask
, &attrs
);
3333 if (rc
!= XpmSuccess
)
3335 XpmFreeAttributes (&attrs
);
3339 id
= x_allocate_bitmap_record (f
);
3340 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3341 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3342 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3343 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3344 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3345 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3346 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3347 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3349 XpmFreeAttributes (&attrs
);
3352 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3354 /* Load image IMG which will be displayed on frame F. Value is
3355 non-zero if successful. */
3360 xpm_load (struct frame
*f
, struct image
*img
)
3363 XpmAttributes attrs
;
3364 Lisp_Object specified_file
, color_symbols
;
3367 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3368 #endif /* HAVE_NTGUI */
3370 /* Configure the XPM lib. Use the visual of frame F. Allocate
3371 close colors. Return colors allocated. */
3372 memset (&attrs
, 0, sizeof attrs
);
3375 attrs
.visual
= FRAME_X_VISUAL (f
);
3376 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3377 attrs
.valuemask
|= XpmVisual
;
3378 attrs
.valuemask
|= XpmColormap
;
3379 #endif /* HAVE_NTGUI */
3381 #ifdef ALLOC_XPM_COLORS
3382 /* Allocate colors with our own functions which handle
3383 failing color allocation more gracefully. */
3384 attrs
.color_closure
= f
;
3385 attrs
.alloc_color
= xpm_alloc_color
;
3386 attrs
.free_colors
= xpm_free_colors
;
3387 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3388 #else /* not ALLOC_XPM_COLORS */
3389 /* Let the XPM lib allocate colors. */
3390 attrs
.valuemask
|= XpmReturnAllocPixels
;
3391 #ifdef XpmAllocCloseColors
3392 attrs
.alloc_close_colors
= 1;
3393 attrs
.valuemask
|= XpmAllocCloseColors
;
3394 #else /* not XpmAllocCloseColors */
3395 attrs
.closeness
= 600;
3396 attrs
.valuemask
|= XpmCloseness
;
3397 #endif /* not XpmAllocCloseColors */
3398 #endif /* ALLOC_XPM_COLORS */
3400 /* If image specification contains symbolic color definitions, add
3401 these to `attrs'. */
3402 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3403 if (CONSP (color_symbols
))
3406 XpmColorSymbol
*xpm_syms
;
3409 attrs
.valuemask
|= XpmColorSymbols
;
3411 /* Count number of symbols. */
3412 attrs
.numsymbols
= 0;
3413 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3416 /* Allocate an XpmColorSymbol array. */
3417 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3418 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3419 memset (xpm_syms
, 0, size
);
3420 attrs
.colorsymbols
= xpm_syms
;
3422 /* Fill the color symbol array. */
3423 for (tail
= color_symbols
, i
= 0;
3425 ++i
, tail
= XCDR (tail
))
3429 char *empty_string
= (char *) "";
3431 if (!CONSP (XCAR (tail
)))
3433 xpm_syms
[i
].name
= empty_string
;
3434 xpm_syms
[i
].value
= empty_string
;
3437 name
= XCAR (XCAR (tail
));
3438 color
= XCDR (XCAR (tail
));
3441 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3442 strcpy (xpm_syms
[i
].name
, SSDATA (name
));
3445 xpm_syms
[i
].name
= empty_string
;
3446 if (STRINGP (color
))
3448 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3449 strcpy (xpm_syms
[i
].value
, SSDATA (color
));
3452 xpm_syms
[i
].value
= empty_string
;
3456 /* Create a pixmap for the image, either from a file, or from a
3457 string buffer containing data in the same format as an XPM file. */
3458 #ifdef ALLOC_XPM_COLORS
3459 xpm_init_color_cache (f
, &attrs
);
3462 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3466 HDC frame_dc
= get_frame_dc (f
);
3467 hdc
= CreateCompatibleDC (frame_dc
);
3468 release_frame_dc (f
, frame_dc
);
3470 #endif /* HAVE_NTGUI */
3472 if (STRINGP (specified_file
))
3474 Lisp_Object file
= x_find_image_file (specified_file
);
3475 if (!STRINGP (file
))
3477 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3478 #ifdef ALLOC_XPM_COLORS
3479 xpm_free_color_cache ();
3485 /* XpmReadFileToPixmap is not available in the Windows port of
3486 libxpm. But XpmReadFileToImage almost does what we want. */
3487 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3488 &xpm_image
, &xpm_mask
,
3491 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3492 SSDATA (file
), &img
->pixmap
, &img
->mask
,
3494 #endif /* HAVE_NTGUI */
3498 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3499 if (!STRINGP (buffer
))
3501 image_error ("Invalid image data `%s'", buffer
, Qnil
);
3502 #ifdef ALLOC_XPM_COLORS
3503 xpm_free_color_cache ();
3508 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3509 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3510 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3511 &xpm_image
, &xpm_mask
,
3514 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3516 &img
->pixmap
, &img
->mask
,
3518 #endif /* HAVE_NTGUI */
3521 if (rc
== XpmSuccess
)
3523 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3524 img
->colors
= colors_in_color_table (&img
->ncolors
);
3525 #else /* not ALLOC_XPM_COLORS */
3529 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3530 plus some duplicate attributes. */
3531 if (xpm_image
&& xpm_image
->bitmap
)
3533 img
->pixmap
= xpm_image
->bitmap
;
3534 /* XImageFree in libXpm frees XImage struct without destroying
3535 the bitmap, which is what we want. */
3536 fn_XImageFree (xpm_image
);
3538 if (xpm_mask
&& xpm_mask
->bitmap
)
3540 /* The mask appears to be inverted compared with what we expect.
3541 TODO: invert our expectations. See other places where we
3542 have to invert bits because our idea of masks is backwards. */
3544 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3546 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3547 SelectObject (hdc
, old_obj
);
3549 img
->mask
= xpm_mask
->bitmap
;
3550 fn_XImageFree (xpm_mask
);
3555 #endif /* HAVE_NTGUI */
3557 /* Remember allocated colors. */
3558 img
->ncolors
= attrs
.nalloc_pixels
;
3559 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3560 * sizeof *img
->colors
);
3561 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3563 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3564 #ifdef DEBUG_X_COLORS
3565 register_color (img
->colors
[i
]);
3568 #endif /* not ALLOC_XPM_COLORS */
3570 img
->width
= attrs
.width
;
3571 img
->height
= attrs
.height
;
3572 xassert (img
->width
> 0 && img
->height
> 0);
3574 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3576 fn_XpmFreeAttributes (&attrs
);
3578 XpmFreeAttributes (&attrs
);
3579 #endif /* HAVE_NTGUI */
3585 #endif /* HAVE_NTGUI */
3590 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3593 case XpmFileInvalid
:
3594 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3598 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3601 case XpmColorFailed
:
3602 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3606 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3611 #ifdef ALLOC_XPM_COLORS
3612 xpm_free_color_cache ();
3614 return rc
== XpmSuccess
;
3617 #endif /* HAVE_XPM */
3619 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3621 /* XPM support functions for NS where libxpm is not available.
3622 Only XPM version 3 (without any extensions) is supported. */
3624 static int xpm_scan (const unsigned char **, const unsigned char *,
3625 const unsigned char **, int *);
3626 static Lisp_Object xpm_make_color_table_v
3627 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3628 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3629 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3631 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3632 const unsigned char *, int);
3633 static Lisp_Object xpm_make_color_table_h
3634 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3635 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3636 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3638 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3639 const unsigned char *, int);
3640 static int xpm_str_to_color_key (const char *);
3641 static int xpm_load_image (struct frame
*, struct image
*,
3642 const unsigned char *, const unsigned char *);
3644 /* Tokens returned from xpm_scan. */
3653 /* Scan an XPM data and return a character (< 256) or a token defined
3654 by enum xpm_token above. *S and END are the start (inclusive) and
3655 the end (exclusive) addresses of the data, respectively. Advance
3656 *S while scanning. If token is either XPM_TK_IDENT or
3657 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3658 length of the corresponding token, respectively. */
3661 xpm_scan (const unsigned char **s
,
3662 const unsigned char *end
,
3663 const unsigned char **beg
,
3670 /* Skip white-space. */
3671 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3674 /* gnus-pointer.xpm uses '-' in its identifier.
3675 sb-dir-plus.xpm uses '+' in its identifier. */
3676 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3680 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3683 return XPM_TK_IDENT
;
3688 while (*s
< end
&& **s
!= '"')
3693 return XPM_TK_STRING
;
3697 if (*s
< end
&& **s
== '*')
3699 /* C-style comment. */
3703 while (*s
< end
&& *(*s
)++ != '*')
3706 while (*s
< end
&& **s
!= '/');
3720 /* Functions for color table lookup in XPM data. A key is a string
3721 specifying the color of each pixel in XPM data. A value is either
3722 an integer that specifies a pixel color, Qt that specifies
3723 transparency, or Qnil for the unspecified color. If the length of
3724 the key string is one, a vector is used as a table. Otherwise, a
3725 hash table is used. */
3728 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3729 const unsigned char *,
3732 Lisp_Object (**get_func
) (Lisp_Object
,
3733 const unsigned char *,
3736 *put_func
= xpm_put_color_table_v
;
3737 *get_func
= xpm_get_color_table_v
;
3738 return Fmake_vector (make_number (256), Qnil
);
3742 xpm_put_color_table_v (Lisp_Object color_table
,
3743 const unsigned char *chars_start
,
3747 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3751 xpm_get_color_table_v (Lisp_Object color_table
,
3752 const unsigned char *chars_start
,
3755 return XVECTOR (color_table
)->contents
[*chars_start
];
3759 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3760 const unsigned char *,
3763 Lisp_Object (**get_func
) (Lisp_Object
,
3764 const unsigned char *,
3767 *put_func
= xpm_put_color_table_h
;
3768 *get_func
= xpm_get_color_table_h
;
3769 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3770 make_float (DEFAULT_REHASH_SIZE
),
3771 make_float (DEFAULT_REHASH_THRESHOLD
),
3776 xpm_put_color_table_h (Lisp_Object color_table
,
3777 const unsigned char *chars_start
,
3781 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3783 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3785 hash_lookup (table
, chars
, &hash_code
);
3786 hash_put (table
, chars
, color
, hash_code
);
3790 xpm_get_color_table_h (Lisp_Object color_table
,
3791 const unsigned char *chars_start
,
3794 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3795 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3798 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3801 enum xpm_color_key
{
3809 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3812 xpm_str_to_color_key (const char *s
)
3817 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3819 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3825 xpm_load_image (struct frame
*f
,
3827 const unsigned char *contents
,
3828 const unsigned char *end
)
3830 const unsigned char *s
= contents
, *beg
, *str
;
3831 unsigned char buffer
[BUFSIZ
];
3832 int width
, height
, x
, y
;
3833 int num_colors
, chars_per_pixel
;
3835 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3836 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3837 Lisp_Object frame
, color_symbols
, color_table
;
3838 int best_key
, have_mask
= 0;
3839 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3842 LA1 = xpm_scan (&s, end, &beg, &len)
3844 #define expect(TOKEN) \
3845 if (LA1 != (TOKEN)) \
3850 #define expect_ident(IDENT) \
3851 if (LA1 == XPM_TK_IDENT \
3852 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3857 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3861 expect_ident ("static");
3862 expect_ident ("char");
3864 expect (XPM_TK_IDENT
);
3869 expect (XPM_TK_STRING
);
3872 memcpy (buffer
, beg
, len
);
3874 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3875 &num_colors
, &chars_per_pixel
) != 4
3876 || width
<= 0 || height
<= 0
3877 || num_colors
<= 0 || chars_per_pixel
<= 0)
3880 if (!check_image_size (f
, width
, height
))
3882 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3888 XSETFRAME (frame
, f
);
3889 if (!NILP (Fxw_display_color_p (frame
)))
3890 best_key
= XPM_COLOR_KEY_C
;
3891 else if (!NILP (Fx_display_grayscale_p (frame
)))
3892 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3893 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3895 best_key
= XPM_COLOR_KEY_M
;
3897 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3898 if (chars_per_pixel
== 1)
3899 color_table
= xpm_make_color_table_v (&put_color_table
,
3902 color_table
= xpm_make_color_table_h (&put_color_table
,
3905 while (num_colors
-- > 0)
3907 char *color
, *max_color
;
3908 int key
, next_key
, max_key
= 0;
3909 Lisp_Object symbol_color
= Qnil
, color_val
;
3912 expect (XPM_TK_STRING
);
3913 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3915 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3916 buffer
[len
- chars_per_pixel
] = '\0';
3918 str
= strtok (buffer
, " \t");
3921 key
= xpm_str_to_color_key (str
);
3926 color
= strtok (NULL
, " \t");
3930 while ((str
= strtok (NULL
, " \t")) != NULL
)
3932 next_key
= xpm_str_to_color_key (str
);
3935 color
[strlen (color
)] = ' ';
3938 if (key
== XPM_COLOR_KEY_S
)
3940 if (NILP (symbol_color
))
3941 symbol_color
= build_string (color
);
3943 else if (max_key
< key
&& key
<= best_key
)
3953 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3955 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3957 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3959 if (xstrcasecmp (SSDATA (XCDR (specified_color
)), "None") == 0)
3961 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3963 color_val
= make_number (cdef
.pixel
);
3966 if (NILP (color_val
) && max_key
> 0)
3968 if (xstrcasecmp (max_color
, "None") == 0)
3970 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3971 color_val
= make_number (cdef
.pixel
);
3973 if (!NILP (color_val
))
3974 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3979 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3980 &ximg
, &img
->pixmap
)
3982 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3983 &mask_img
, &img
->mask
)
3987 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3991 for (y
= 0; y
< height
; y
++)
3993 expect (XPM_TK_STRING
);
3995 if (len
< width
* chars_per_pixel
)
3997 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3999 Lisp_Object color_val
=
4000 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4002 XPutPixel (ximg
, x
, y
,
4003 (INTEGERP (color_val
) ? XINT (color_val
)
4004 : FRAME_FOREGROUND_PIXEL (f
)));
4006 XPutPixel (mask_img
, x
, y
,
4007 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4008 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4010 if (EQ (color_val
, Qt
))
4011 ns_set_alpha (ximg
, x
, y
, 0);
4019 img
->height
= height
;
4021 /* Maybe fill in the background field while we have ximg handy. */
4022 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4023 IMAGE_BACKGROUND (img
, f
, ximg
);
4025 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4026 x_destroy_x_image (ximg
);
4030 /* Fill in the background_transparent field while we have the
4032 image_background_transparent (img
, f
, mask_img
);
4034 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4035 x_destroy_x_image (mask_img
);
4039 x_destroy_x_image (mask_img
);
4040 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4041 img
->mask
= NO_PIXMAP
;
4047 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4049 x_destroy_x_image (ximg
);
4050 x_destroy_x_image (mask_img
);
4051 x_clear_image (f
, img
);
4060 xpm_load (struct frame
*f
,
4064 Lisp_Object file_name
;
4066 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4067 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4068 if (STRINGP (file_name
))
4071 unsigned char *contents
;
4074 file
= x_find_image_file (file_name
);
4075 if (!STRINGP (file
))
4077 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4081 contents
= slurp_file (SDATA (file
), &size
);
4082 if (contents
== NULL
)
4084 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4088 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4095 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4096 if (!STRINGP (data
))
4098 image_error ("Invalid image data `%s'", data
, Qnil
);
4101 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4102 SDATA (data
) + SBYTES (data
));
4108 #endif /* HAVE_NS && !HAVE_XPM */
4112 /***********************************************************************
4114 ***********************************************************************/
4116 #ifdef COLOR_TABLE_SUPPORT
4118 /* An entry in the color table mapping an RGB color to a pixel color. */
4123 unsigned long pixel
;
4125 /* Next in color table collision list. */
4126 struct ct_color
*next
;
4129 /* The bucket vector size to use. Must be prime. */
4133 /* Value is a hash of the RGB color given by R, G, and B. */
4135 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4137 /* The color hash table. */
4139 static struct ct_color
**ct_table
;
4141 /* Number of entries in the color table. */
4143 static int ct_colors_allocated
;
4145 /* Initialize the color table. */
4148 init_color_table (void)
4150 int size
= CT_SIZE
* sizeof (*ct_table
);
4151 ct_table
= (struct ct_color
**) xmalloc (size
);
4152 memset (ct_table
, 0, size
);
4153 ct_colors_allocated
= 0;
4157 /* Free memory associated with the color table. */
4160 free_color_table (void)
4163 struct ct_color
*p
, *next
;
4165 for (i
= 0; i
< CT_SIZE
; ++i
)
4166 for (p
= ct_table
[i
]; p
; p
= next
)
4177 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4178 entry for that color already is in the color table, return the
4179 pixel color of that entry. Otherwise, allocate a new color for R,
4180 G, B, and make an entry in the color table. */
4182 static unsigned long
4183 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4185 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4186 int i
= hash
% CT_SIZE
;
4188 Display_Info
*dpyinfo
;
4190 /* Handle TrueColor visuals specially, which improves performance by
4191 two orders of magnitude. Freeing colors on TrueColor visuals is
4192 a nop, and pixel colors specify RGB values directly. See also
4193 the Xlib spec, chapter 3.1. */
4194 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4195 if (dpyinfo
->red_bits
> 0)
4197 unsigned long pr
, pg
, pb
;
4199 /* Apply gamma-correction like normal color allocation does. */
4203 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4204 gamma_correct (f
, &color
);
4205 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4208 /* Scale down RGB values to the visual's bits per RGB, and shift
4209 them to the right position in the pixel color. Note that the
4210 original RGB values are 16-bit values, as usual in X. */
4211 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4212 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4213 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4215 /* Assemble the pixel color. */
4216 return pr
| pg
| pb
;
4219 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4220 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4226 #ifdef HAVE_X_WINDOWS
4235 cmap
= FRAME_X_COLORMAP (f
);
4236 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4239 ++ct_colors_allocated
;
4240 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4244 p
->pixel
= color
.pixel
;
4245 p
->next
= ct_table
[i
];
4249 return FRAME_FOREGROUND_PIXEL (f
);
4254 color
= PALETTERGB (r
, g
, b
);
4256 color
= RGB_TO_ULONG (r
, g
, b
);
4257 #endif /* HAVE_NTGUI */
4258 ++ct_colors_allocated
;
4259 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4264 p
->next
= ct_table
[i
];
4266 #endif /* HAVE_X_WINDOWS */
4274 /* Look up pixel color PIXEL which is used on frame F in the color
4275 table. If not already present, allocate it. Value is PIXEL. */
4277 static unsigned long
4278 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4280 int i
= pixel
% CT_SIZE
;
4283 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4284 if (p
->pixel
== pixel
)
4293 #ifdef HAVE_X_WINDOWS
4294 cmap
= FRAME_X_COLORMAP (f
);
4295 color
.pixel
= pixel
;
4296 x_query_color (f
, &color
);
4297 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4300 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4301 color
.pixel
= pixel
;
4302 XQueryColor (NULL
, cmap
, &color
);
4303 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4305 #endif /* HAVE_X_WINDOWS */
4309 ++ct_colors_allocated
;
4311 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4316 p
->next
= ct_table
[i
];
4320 return FRAME_FOREGROUND_PIXEL (f
);
4326 /* Value is a vector of all pixel colors contained in the color table,
4327 allocated via xmalloc. Set *N to the number of colors. */
4329 static unsigned long *
4330 colors_in_color_table (int *n
)
4334 unsigned long *colors
;
4336 if (ct_colors_allocated
== 0)
4343 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4345 *n
= ct_colors_allocated
;
4347 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4348 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4349 colors
[j
++] = p
->pixel
;
4355 #else /* COLOR_TABLE_SUPPORT */
4357 static unsigned long
4358 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4360 unsigned long pixel
;
4363 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4364 #endif /* HAVE_NTGUI */
4367 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4368 #endif /* HAVE_NS */
4373 init_color_table (void)
4376 #endif /* COLOR_TABLE_SUPPORT */
4379 /***********************************************************************
4381 ***********************************************************************/
4383 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4384 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4385 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4388 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4389 #endif /* HAVE_NTGUI */
4391 /* Edge detection matrices for different edge-detection
4394 static int emboss_matrix
[9] = {
4396 2, -1, 0, /* y - 1 */
4398 0, 1, -2 /* y + 1 */
4401 static int laplace_matrix
[9] = {
4403 1, 0, 0, /* y - 1 */
4405 0, 0, -1 /* y + 1 */
4408 /* Value is the intensity of the color whose red/green/blue values
4411 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4414 /* On frame F, return an array of XColor structures describing image
4415 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4416 non-zero means also fill the red/green/blue members of the XColor
4417 structures. Value is a pointer to the array of XColors structures,
4418 allocated with xmalloc; it must be freed by the caller. */
4421 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4425 XImagePtr_or_DC ximg
;
4429 #endif /* HAVE_NTGUI */
4431 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4434 /* Get the X image IMG->pixmap. */
4435 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4436 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4438 /* Load the image into a memory device context. */
4439 hdc
= get_frame_dc (f
);
4440 ximg
= CreateCompatibleDC (hdc
);
4441 release_frame_dc (f
, hdc
);
4442 prev
= SelectObject (ximg
, img
->pixmap
);
4443 #endif /* HAVE_NTGUI */
4445 /* Fill the `pixel' members of the XColor array. I wished there
4446 were an easy and portable way to circumvent XGetPixel. */
4448 for (y
= 0; y
< img
->height
; ++y
)
4452 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4453 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4454 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4456 x_query_colors (f
, row
, img
->width
);
4460 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4462 /* W32_TODO: palette support needed here? */
4463 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4466 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4467 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4468 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4471 #endif /* HAVE_X_WINDOWS */
4474 Destroy_Image (ximg
, prev
);
4481 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4482 created with CreateDIBSection, with the pointer to the bit values
4483 stored in ximg->data. */
4486 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4488 int width
= ximg
->info
.bmiHeader
.biWidth
;
4489 unsigned char * pixel
;
4491 /* True color images. */
4492 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4494 int rowbytes
= width
* 3;
4495 /* Ensure scanlines are aligned on 4 byte boundaries. */
4497 rowbytes
+= 4 - (rowbytes
% 4);
4499 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4500 /* Windows bitmaps are in BGR order. */
4501 *pixel
= GetBValue (color
);
4502 *(pixel
+ 1) = GetGValue (color
);
4503 *(pixel
+ 2) = GetRValue (color
);
4505 /* Monochrome images. */
4506 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4508 int rowbytes
= width
/ 8;
4509 /* Ensure scanlines are aligned on 4 byte boundaries. */
4511 rowbytes
+= 4 - (rowbytes
% 4);
4512 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4513 /* Filter out palette info. */
4514 if (color
& 0x00ffffff)
4515 *pixel
= *pixel
| (1 << x
% 8);
4517 *pixel
= *pixel
& ~(1 << x
% 8);
4520 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4523 #endif /* HAVE_NTGUI */
4525 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4526 RGB members are set. F is the frame on which this all happens.
4527 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4530 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4533 XImagePtr oimg
= NULL
;
4537 init_color_table ();
4539 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4542 for (y
= 0; y
< img
->height
; ++y
)
4543 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4545 unsigned long pixel
;
4546 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4547 XPutPixel (oimg
, x
, y
, pixel
);
4551 x_clear_image_1 (f
, img
, 1, 0, 1);
4553 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4554 x_destroy_x_image (oimg
);
4555 img
->pixmap
= pixmap
;
4556 #ifdef COLOR_TABLE_SUPPORT
4557 img
->colors
= colors_in_color_table (&img
->ncolors
);
4558 free_color_table ();
4559 #endif /* COLOR_TABLE_SUPPORT */
4563 /* On frame F, perform edge-detection on image IMG.
4565 MATRIX is a nine-element array specifying the transformation
4566 matrix. See emboss_matrix for an example.
4568 COLOR_ADJUST is a color adjustment added to each pixel of the
4572 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4574 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4578 for (i
= sum
= 0; i
< 9; ++i
)
4579 sum
+= eabs (matrix
[i
]);
4581 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4583 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4585 for (y
= 0; y
< img
->height
; ++y
)
4587 p
= COLOR (new, 0, y
);
4588 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4589 p
= COLOR (new, img
->width
- 1, y
);
4590 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4593 for (x
= 1; x
< img
->width
- 1; ++x
)
4595 p
= COLOR (new, x
, 0);
4596 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4597 p
= COLOR (new, x
, img
->height
- 1);
4598 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4601 for (y
= 1; y
< img
->height
- 1; ++y
)
4603 p
= COLOR (new, 1, y
);
4605 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4607 int r
, g
, b
, yy
, xx
;
4610 for (yy
= y
- 1; yy
< y
+ 2; ++yy
)
4611 for (xx
= x
- 1; xx
< x
+ 2; ++xx
, ++i
)
4614 XColor
*t
= COLOR (colors
, xx
, yy
);
4615 r
+= matrix
[i
] * t
->red
;
4616 g
+= matrix
[i
] * t
->green
;
4617 b
+= matrix
[i
] * t
->blue
;
4620 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4621 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4622 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4623 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4628 x_from_xcolors (f
, img
, new);
4634 /* Perform the pre-defined `emboss' edge-detection on image IMG
4638 x_emboss (struct frame
*f
, struct image
*img
)
4640 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4644 /* Transform image IMG which is used on frame F with a Laplace
4645 edge-detection algorithm. The result is an image that can be used
4646 to draw disabled buttons, for example. */
4649 x_laplace (struct frame
*f
, struct image
*img
)
4651 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4655 /* Perform edge-detection on image IMG on frame F, with specified
4656 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4658 MATRIX must be either
4660 - a list of at least 9 numbers in row-major form
4661 - a vector of at least 9 numbers
4663 COLOR_ADJUST nil means use a default; otherwise it must be a
4667 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4668 Lisp_Object color_adjust
)
4676 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4677 ++i
, matrix
= XCDR (matrix
))
4678 trans
[i
] = XFLOATINT (XCAR (matrix
));
4680 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4682 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4683 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4686 if (NILP (color_adjust
))
4687 color_adjust
= make_number (0xffff / 2);
4689 if (i
== 9 && NUMBERP (color_adjust
))
4690 x_detect_edges (f
, img
, trans
, XFLOATINT (color_adjust
));
4694 /* Transform image IMG on frame F so that it looks disabled. */
4697 x_disable_image (struct frame
*f
, struct image
*img
)
4699 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4701 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4703 int n_planes
= dpyinfo
->n_planes
;
4704 #endif /* HAVE_NTGUI */
4708 /* Color (or grayscale). Convert to gray, and equalize. Just
4709 drawing such images with a stipple can look very odd, so
4710 we're using this method instead. */
4711 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4713 const int h
= 15000;
4714 const int l
= 30000;
4716 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4720 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4721 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4722 p
->red
= p
->green
= p
->blue
= i2
;
4725 x_from_xcolors (f
, img
, colors
);
4728 /* Draw a cross over the disabled image, if we must or if we
4730 if (n_planes
< 2 || cross_disabled_images
)
4733 Display
*dpy
= FRAME_X_DISPLAY (f
);
4736 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4738 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4740 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4741 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4742 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4743 img
->width
- 1, img
->height
- 1);
4744 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4750 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4751 XSetForeground (dpy
, gc
, MaskForeground (f
));
4752 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4753 img
->width
- 1, img
->height
- 1);
4754 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4758 #endif /* !HAVE_NS */
4763 hdc
= get_frame_dc (f
);
4764 bmpdc
= CreateCompatibleDC (hdc
);
4765 release_frame_dc (f
, hdc
);
4767 prev
= SelectObject (bmpdc
, img
->pixmap
);
4769 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4770 MoveToEx (bmpdc
, 0, 0, NULL
);
4771 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4772 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4773 LineTo (bmpdc
, img
->width
- 1, 0);
4777 SelectObject (bmpdc
, img
->mask
);
4778 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4779 MoveToEx (bmpdc
, 0, 0, NULL
);
4780 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4781 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4782 LineTo (bmpdc
, img
->width
- 1, 0);
4784 SelectObject (bmpdc
, prev
);
4786 #endif /* HAVE_NTGUI */
4791 /* Build a mask for image IMG which is used on frame F. FILE is the
4792 name of an image file, for error messages. HOW determines how to
4793 determine the background color of IMG. If it is a list '(R G B)',
4794 with R, G, and B being integers >= 0, take that as the color of the
4795 background. Otherwise, determine the background color of IMG
4796 heuristically. Value is non-zero if successful. */
4799 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4801 XImagePtr_or_DC ximg
;
4809 #endif /* HAVE_NTGUI */
4810 int x
, y
, rc
, use_img_background
;
4811 unsigned long bg
= 0;
4815 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4816 img
->mask
= NO_PIXMAP
;
4817 img
->background_transparent_valid
= 0;
4822 /* Create an image and pixmap serving as mask. */
4823 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4824 &mask_img
, &img
->mask
);
4827 #endif /* !HAVE_NS */
4829 /* Get the X image of IMG->pixmap. */
4830 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4831 img
->width
, img
->height
,
4834 /* Create the bit array serving as mask. */
4835 row_width
= (img
->width
+ 7) / 8;
4836 mask_img
= xmalloc (row_width
* img
->height
);
4837 memset (mask_img
, 0, row_width
* img
->height
);
4839 /* Create a memory device context for IMG->pixmap. */
4840 frame_dc
= get_frame_dc (f
);
4841 ximg
= CreateCompatibleDC (frame_dc
);
4842 release_frame_dc (f
, frame_dc
);
4843 prev
= SelectObject (ximg
, img
->pixmap
);
4844 #endif /* HAVE_NTGUI */
4846 /* Determine the background color of ximg. If HOW is `(R G B)'
4847 take that as color. Otherwise, use the image's background color. */
4848 use_img_background
= 1;
4854 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4856 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4860 if (i
== 3 && NILP (how
))
4862 char color_name
[30];
4863 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4866 0x00ffffff & /* Filter out palette info. */
4867 #endif /* HAVE_NTGUI */
4868 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4869 use_img_background
= 0;
4873 if (use_img_background
)
4874 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4876 /* Set all bits in mask_img to 1 whose color in ximg is different
4877 from the background color bg. */
4879 for (y
= 0; y
< img
->height
; ++y
)
4880 for (x
= 0; x
< img
->width
; ++x
)
4882 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4883 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4885 if (XGetPixel (ximg
, x
, y
) == bg
)
4886 ns_set_alpha (ximg
, x
, y
, 0);
4887 #endif /* HAVE_NS */
4889 /* Fill in the background_transparent field while we have the mask handy. */
4890 image_background_transparent (img
, f
, mask_img
);
4892 /* Put mask_img into img->mask. */
4893 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4894 x_destroy_x_image (mask_img
);
4895 #endif /* !HAVE_NS */
4897 for (y
= 0; y
< img
->height
; ++y
)
4898 for (x
= 0; x
< img
->width
; ++x
)
4900 COLORREF p
= GetPixel (ximg
, x
, y
);
4902 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4905 /* Create the mask image. */
4906 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4908 /* Fill in the background_transparent field while we have the mask handy. */
4909 SelectObject (ximg
, img
->mask
);
4910 image_background_transparent (img
, f
, ximg
);
4912 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4914 #endif /* HAVE_NTGUI */
4916 Destroy_Image (ximg
, prev
);
4922 /***********************************************************************
4923 PBM (mono, gray, color)
4924 ***********************************************************************/
4926 static int pbm_image_p (Lisp_Object object
);
4927 static int pbm_load (struct frame
*f
, struct image
*img
);
4928 static int pbm_scan_number (unsigned char **, unsigned char *);
4930 /* The symbol `pbm' identifying images of this type. */
4932 static Lisp_Object Qpbm
;
4934 /* Indices of image specification fields in gs_format, below. */
4936 enum pbm_keyword_index
4952 /* Vector of image_keyword structures describing the format
4953 of valid user-defined image specifications. */
4955 static const struct image_keyword pbm_format
[PBM_LAST
] =
4957 {":type", IMAGE_SYMBOL_VALUE
, 1},
4958 {":file", IMAGE_STRING_VALUE
, 0},
4959 {":data", IMAGE_STRING_VALUE
, 0},
4960 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4961 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4962 {":relief", IMAGE_INTEGER_VALUE
, 0},
4963 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4964 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4965 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4966 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4967 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4970 /* Structure describing the image type `pbm'. */
4972 static struct image_type pbm_type
=
4982 /* Return non-zero if OBJECT is a valid PBM image specification. */
4985 pbm_image_p (Lisp_Object object
)
4987 struct image_keyword fmt
[PBM_LAST
];
4989 memcpy (fmt
, pbm_format
, sizeof fmt
);
4991 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4994 /* Must specify either :data or :file. */
4995 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4999 /* Scan a decimal number from *S and return it. Advance *S while
5000 reading the number. END is the end of the string. Value is -1 at
5004 pbm_scan_number (unsigned char **s
, unsigned char *end
)
5006 int c
= 0, val
= -1;
5010 /* Skip white-space. */
5011 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5016 /* Skip comment to end of line. */
5017 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5020 else if (isdigit (c
))
5022 /* Read decimal number. */
5024 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5025 val
= 10 * val
+ c
- '0';
5037 #if 0 /* Unused. ++kfs */
5039 /* Read FILE into memory. Value is a pointer to a buffer allocated
5040 with xmalloc holding FILE's contents. Value is null if an error
5041 occurred. *SIZE is set to the size of the file. */
5044 pbm_read_file (file
, size
)
5052 if (stat (SDATA (file
), &st
) == 0
5053 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5054 && (buf
= (char *) xmalloc (st
.st_size
),
5055 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5074 #endif /* HAVE_NTGUI */
5076 /* Load PBM image IMG for use on frame F. */
5079 pbm_load (struct frame
*f
, struct image
*img
)
5082 int width
, height
, max_color_idx
= 0;
5084 Lisp_Object file
, specified_file
;
5085 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5086 unsigned char *contents
= NULL
;
5087 unsigned char *end
, *p
;
5090 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5092 if (STRINGP (specified_file
))
5094 file
= x_find_image_file (specified_file
);
5095 if (!STRINGP (file
))
5097 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5101 contents
= slurp_file (SSDATA (file
), &size
);
5102 if (contents
== NULL
)
5104 image_error ("Error reading `%s'", file
, Qnil
);
5109 end
= contents
+ size
;
5114 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5115 if (!STRINGP (data
))
5117 image_error ("Invalid image data `%s'", data
, Qnil
);
5121 end
= p
+ SBYTES (data
);
5124 /* Check magic number. */
5125 if (end
- p
< 2 || *p
++ != 'P')
5127 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5136 raw_p
= 0, type
= PBM_MONO
;
5140 raw_p
= 0, type
= PBM_GRAY
;
5144 raw_p
= 0, type
= PBM_COLOR
;
5148 raw_p
= 1, type
= PBM_MONO
;
5152 raw_p
= 1, type
= PBM_GRAY
;
5156 raw_p
= 1, type
= PBM_COLOR
;
5160 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5164 /* Read width, height, maximum color-component. Characters
5165 starting with `#' up to the end of a line are ignored. */
5166 width
= pbm_scan_number (&p
, end
);
5167 height
= pbm_scan_number (&p
, end
);
5169 if (type
!= PBM_MONO
)
5171 max_color_idx
= pbm_scan_number (&p
, end
);
5172 if (max_color_idx
> 65535 || max_color_idx
< 0)
5174 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5179 if (!check_image_size (f
, width
, height
))
5181 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5185 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5186 &ximg
, &img
->pixmap
))
5189 /* Initialize the color hash table. */
5190 init_color_table ();
5192 if (type
== PBM_MONO
)
5195 struct image_keyword fmt
[PBM_LAST
];
5196 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5197 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5199 /* Parse the image specification. */
5200 memcpy (fmt
, pbm_format
, sizeof fmt
);
5201 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5203 /* Get foreground and background colors, maybe allocate colors. */
5204 if (fmt
[PBM_FOREGROUND
].count
5205 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5206 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5207 if (fmt
[PBM_BACKGROUND
].count
5208 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5210 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5211 img
->background
= bg
;
5212 img
->background_valid
= 1;
5215 for (y
= 0; y
< height
; ++y
)
5216 for (x
= 0; x
< width
; ++x
)
5224 x_destroy_x_image (ximg
);
5225 x_clear_image (f
, img
);
5226 image_error ("Invalid image size in image `%s'",
5236 g
= pbm_scan_number (&p
, end
);
5238 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5243 int expected_size
= height
* width
;
5244 if (max_color_idx
> 255)
5246 if (type
== PBM_COLOR
)
5249 if (raw_p
&& p
+ expected_size
> end
)
5251 x_destroy_x_image (ximg
);
5252 x_clear_image (f
, img
);
5253 image_error ("Invalid image size in image `%s'",
5258 for (y
= 0; y
< height
; ++y
)
5259 for (x
= 0; x
< width
; ++x
)
5263 if (type
== PBM_GRAY
&& raw_p
)
5266 if (max_color_idx
> 255)
5267 r
= g
= b
= r
* 256 + *p
++;
5269 else if (type
== PBM_GRAY
)
5270 r
= g
= b
= pbm_scan_number (&p
, end
);
5274 if (max_color_idx
> 255)
5277 if (max_color_idx
> 255)
5280 if (max_color_idx
> 255)
5285 r
= pbm_scan_number (&p
, end
);
5286 g
= pbm_scan_number (&p
, end
);
5287 b
= pbm_scan_number (&p
, end
);
5290 if (r
< 0 || g
< 0 || b
< 0)
5292 x_destroy_x_image (ximg
);
5293 image_error ("Invalid pixel value in image `%s'",
5298 /* RGB values are now in the range 0..max_color_idx.
5299 Scale this to the range 0..0xffff supported by X. */
5300 r
= (double) r
* 65535 / max_color_idx
;
5301 g
= (double) g
* 65535 / max_color_idx
;
5302 b
= (double) b
* 65535 / max_color_idx
;
5303 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5307 #ifdef COLOR_TABLE_SUPPORT
5308 /* Store in IMG->colors the colors allocated for the image, and
5309 free the color table. */
5310 img
->colors
= colors_in_color_table (&img
->ncolors
);
5311 free_color_table ();
5312 #endif /* COLOR_TABLE_SUPPORT */
5315 img
->height
= height
;
5317 /* Maybe fill in the background field while we have ximg handy. */
5319 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5320 /* Casting avoids a GCC warning. */
5321 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5323 /* Put the image into a pixmap. */
5324 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5325 x_destroy_x_image (ximg
);
5327 /* X and W32 versions did it here, MAC version above. ++kfs
5329 img->height = height; */
5336 /***********************************************************************
5338 ***********************************************************************/
5340 #if defined (HAVE_PNG) || defined (HAVE_NS)
5342 /* Function prototypes. */
5344 static int png_image_p (Lisp_Object object
);
5345 static int png_load (struct frame
*f
, struct image
*img
);
5347 /* The symbol `png' identifying images of this type. */
5349 static Lisp_Object Qpng
;
5351 /* Indices of image specification fields in png_format, below. */
5353 enum png_keyword_index
5368 /* Vector of image_keyword structures describing the format
5369 of valid user-defined image specifications. */
5371 static const struct image_keyword png_format
[PNG_LAST
] =
5373 {":type", IMAGE_SYMBOL_VALUE
, 1},
5374 {":data", IMAGE_STRING_VALUE
, 0},
5375 {":file", IMAGE_STRING_VALUE
, 0},
5376 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5377 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5378 {":relief", IMAGE_INTEGER_VALUE
, 0},
5379 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5380 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5381 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5382 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5385 /* Structure describing the image type `png'. */
5387 static struct image_type png_type
=
5396 /* Return non-zero if OBJECT is a valid PNG image specification. */
5399 png_image_p (Lisp_Object object
)
5401 struct image_keyword fmt
[PNG_LAST
];
5402 memcpy (fmt
, png_format
, sizeof fmt
);
5404 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5407 /* Must specify either the :data or :file keyword. */
5408 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5411 #endif /* HAVE_PNG || HAVE_NS */
5417 /* PNG library details. */
5419 DEF_IMGLIB_FN (png_voidp
, png_get_io_ptr
, (png_structp
));
5420 DEF_IMGLIB_FN (int, png_sig_cmp
, (png_bytep
, png_size_t
, png_size_t
));
5421 DEF_IMGLIB_FN (png_structp
, png_create_read_struct
, (png_const_charp
, png_voidp
,
5422 png_error_ptr
, png_error_ptr
));
5423 DEF_IMGLIB_FN (png_infop
, png_create_info_struct
, (png_structp
));
5424 DEF_IMGLIB_FN (void, png_destroy_read_struct
, (png_structpp
, png_infopp
, png_infopp
));
5425 DEF_IMGLIB_FN (void, png_set_read_fn
, (png_structp
, png_voidp
, png_rw_ptr
));
5426 DEF_IMGLIB_FN (void, png_set_sig_bytes
, (png_structp
, int));
5427 DEF_IMGLIB_FN (void, png_read_info
, (png_structp
, png_infop
));
5428 DEF_IMGLIB_FN (png_uint_32
, png_get_IHDR
, (png_structp
, png_infop
,
5429 png_uint_32
*, png_uint_32
*,
5430 int *, int *, int *, int *, int *));
5431 DEF_IMGLIB_FN (png_uint_32
, png_get_valid
, (png_structp
, png_infop
, png_uint_32
));
5432 DEF_IMGLIB_FN (void, png_set_strip_16
, (png_structp
));
5433 DEF_IMGLIB_FN (void, png_set_expand
, (png_structp
));
5434 DEF_IMGLIB_FN (void, png_set_gray_to_rgb
, (png_structp
));
5435 DEF_IMGLIB_FN (void, png_set_background
, (png_structp
, png_color_16p
,
5437 DEF_IMGLIB_FN (png_uint_32
, png_get_bKGD
, (png_structp
, png_infop
, png_color_16p
*));
5438 DEF_IMGLIB_FN (void, png_read_update_info
, (png_structp
, png_infop
));
5439 DEF_IMGLIB_FN (png_byte
, png_get_channels
, (png_structp
, png_infop
));
5440 DEF_IMGLIB_FN (png_size_t
, png_get_rowbytes
, (png_structp
, png_infop
));
5441 DEF_IMGLIB_FN (void, png_read_image
, (png_structp
, png_bytepp
));
5442 DEF_IMGLIB_FN (void, png_read_end
, (png_structp
, png_infop
));
5443 DEF_IMGLIB_FN (void, png_error
, (png_structp
, png_const_charp
));
5445 #if (PNG_LIBPNG_VER >= 10500)
5446 DEF_IMGLIB_FN (void, png_longjmp
, (png_structp
, int));
5447 DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn
, (png_structp
, png_longjmp_ptr
, size_t));
5448 #endif /* libpng version >= 1.5 */
5451 init_png_functions (Lisp_Object libraries
)
5455 /* Try loading libpng under probable names. */
5456 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5459 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5460 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5461 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5462 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5463 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5464 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5465 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5466 LOAD_IMGLIB_FN (library
, png_read_info
);
5467 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5468 LOAD_IMGLIB_FN (library
, png_get_valid
);
5469 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5470 LOAD_IMGLIB_FN (library
, png_set_expand
);
5471 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5472 LOAD_IMGLIB_FN (library
, png_set_background
);
5473 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5474 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5475 LOAD_IMGLIB_FN (library
, png_get_channels
);
5476 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5477 LOAD_IMGLIB_FN (library
, png_read_image
);
5478 LOAD_IMGLIB_FN (library
, png_read_end
);
5479 LOAD_IMGLIB_FN (library
, png_error
);
5481 #if (PNG_LIBPNG_VER >= 10500)
5482 LOAD_IMGLIB_FN (library
, png_longjmp
);
5483 LOAD_IMGLIB_FN (library
, png_set_longjmp_fn
);
5484 #endif /* libpng version >= 1.5 */
5490 #define fn_png_get_io_ptr png_get_io_ptr
5491 #define fn_png_sig_cmp png_sig_cmp
5492 #define fn_png_create_read_struct png_create_read_struct
5493 #define fn_png_create_info_struct png_create_info_struct
5494 #define fn_png_destroy_read_struct png_destroy_read_struct
5495 #define fn_png_set_read_fn png_set_read_fn
5496 #define fn_png_set_sig_bytes png_set_sig_bytes
5497 #define fn_png_read_info png_read_info
5498 #define fn_png_get_IHDR png_get_IHDR
5499 #define fn_png_get_valid png_get_valid
5500 #define fn_png_set_strip_16 png_set_strip_16
5501 #define fn_png_set_expand png_set_expand
5502 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5503 #define fn_png_set_background png_set_background
5504 #define fn_png_get_bKGD png_get_bKGD
5505 #define fn_png_read_update_info png_read_update_info
5506 #define fn_png_get_channels png_get_channels
5507 #define fn_png_get_rowbytes png_get_rowbytes
5508 #define fn_png_read_image png_read_image
5509 #define fn_png_read_end png_read_end
5510 #define fn_png_error png_error
5512 #if (PNG_LIBPNG_VER >= 10500)
5513 #define fn_png_longjmp png_longjmp
5514 #define fn_png_set_longjmp_fn png_set_longjmp_fn
5515 #endif /* libpng version >= 1.5 */
5517 #endif /* HAVE_NTGUI */
5520 #if (PNG_LIBPNG_VER < 10500)
5521 #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1))
5522 #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf)
5524 /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */
5525 #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1))
5526 #define PNG_JMPBUF(ptr) \
5527 (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf)))
5530 /* Error and warning handlers installed when the PNG library
5533 static void my_png_error (png_struct
*, const char *) NO_RETURN
;
5535 my_png_error (png_struct
*png_ptr
, const char *msg
)
5537 xassert (png_ptr
!= NULL
);
5538 /* Avoid compiler warning about deprecated direct access to
5539 png_ptr's fields in libpng versions 1.4.x. */
5540 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5541 PNG_LONGJMP (png_ptr
);
5546 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5548 xassert (png_ptr
!= NULL
);
5549 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5552 /* Memory source for PNG decoding. */
5554 struct png_memory_storage
5556 unsigned char *bytes
; /* The data */
5557 size_t len
; /* How big is it? */
5558 int index
; /* Where are we? */
5562 /* Function set as reader function when reading PNG image from memory.
5563 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5564 bytes from the input to DATA. */
5567 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5569 struct png_memory_storage
*tbr
5570 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5572 if (length
> tbr
->len
- tbr
->index
)
5573 fn_png_error (png_ptr
, "Read error");
5575 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5576 tbr
->index
= tbr
->index
+ length
;
5580 /* Function set as reader function when reading PNG image from a file.
5581 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5582 bytes from the input to DATA. */
5585 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5587 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5589 if (fread (data
, 1, length
, fp
) < length
)
5590 fn_png_error (png_ptr
, "Read error");
5594 /* Load PNG image IMG for use on frame F. Value is non-zero if
5598 png_load (struct frame
*f
, struct image
*img
)
5600 Lisp_Object file
, specified_file
;
5601 Lisp_Object specified_data
;
5603 XImagePtr ximg
, mask_img
= NULL
;
5604 png_struct
*png_ptr
= NULL
;
5605 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5606 FILE *volatile fp
= NULL
;
5608 png_byte
* volatile pixels
= NULL
;
5609 png_byte
** volatile rows
= NULL
;
5610 png_uint_32 width
, height
;
5611 int bit_depth
, color_type
, interlace_type
;
5613 png_uint_32 row_bytes
;
5615 struct png_memory_storage tbr
; /* Data to be read */
5617 /* Find out what file to load. */
5618 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5619 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5621 if (NILP (specified_data
))
5623 file
= x_find_image_file (specified_file
);
5624 if (!STRINGP (file
))
5626 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5630 /* Open the image file. */
5631 fp
= fopen (SSDATA (file
), "rb");
5634 image_error ("Cannot open image file `%s'", file
, Qnil
);
5638 /* Check PNG signature. */
5639 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5640 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5642 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5649 if (!STRINGP (specified_data
))
5651 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
5655 /* Read from memory. */
5656 tbr
.bytes
= SDATA (specified_data
);
5657 tbr
.len
= SBYTES (specified_data
);
5660 /* Check PNG signature. */
5661 if (tbr
.len
< sizeof sig
5662 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5664 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5668 /* Need to skip past the signature. */
5669 tbr
.bytes
+= sizeof (sig
);
5672 /* Initialize read and info structs for PNG lib. */
5673 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5678 if (fp
) fclose (fp
);
5682 info_ptr
= fn_png_create_info_struct (png_ptr
);
5685 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5686 if (fp
) fclose (fp
);
5690 end_info
= fn_png_create_info_struct (png_ptr
);
5693 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5694 if (fp
) fclose (fp
);
5698 /* Set error jump-back. We come back here when the PNG library
5699 detects an error. */
5700 if (setjmp (PNG_JMPBUF (png_ptr
)))
5704 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5707 if (fp
) fclose (fp
);
5711 /* Read image info. */
5712 if (!NILP (specified_data
))
5713 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5715 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5717 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5718 fn_png_read_info (png_ptr
, info_ptr
);
5719 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5720 &interlace_type
, NULL
, NULL
);
5722 if (!check_image_size (f
, width
, height
))
5724 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5727 /* If image contains simply transparency data, we prefer to
5728 construct a clipping mask. */
5729 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5734 /* This function is easier to write if we only have to handle
5735 one data format: RGB or RGBA with 8 bits per channel. Let's
5736 transform other formats into that format. */
5738 /* Strip more than 8 bits per channel. */
5739 if (bit_depth
== 16)
5740 fn_png_set_strip_16 (png_ptr
);
5742 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5744 fn_png_set_expand (png_ptr
);
5746 /* Convert grayscale images to RGB. */
5747 if (color_type
== PNG_COLOR_TYPE_GRAY
5748 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5749 fn_png_set_gray_to_rgb (png_ptr
);
5751 /* Handle alpha channel by combining the image with a background
5752 color. Do this only if a real alpha channel is supplied. For
5753 simple transparency, we prefer a clipping mask. */
5756 /* png_color_16 *image_bg; */
5757 Lisp_Object specified_bg
5758 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5759 int shift
= (bit_depth
== 16) ? 0 : 8;
5761 if (STRINGP (specified_bg
))
5762 /* The user specified `:background', use that. */
5765 if (x_defined_color (f
, SSDATA (specified_bg
), &color
, 0))
5767 png_color_16 user_bg
;
5769 memset (&user_bg
, 0, sizeof user_bg
);
5770 user_bg
.red
= color
.red
>> shift
;
5771 user_bg
.green
= color
.green
>> shift
;
5772 user_bg
.blue
= color
.blue
>> shift
;
5774 fn_png_set_background (png_ptr
, &user_bg
,
5775 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5780 /* We use the current frame background, ignoring any default
5781 background color set by the image. */
5782 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5784 png_color_16 frame_background
;
5786 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5787 x_query_color (f
, &color
);
5789 memset (&frame_background
, 0, sizeof frame_background
);
5790 frame_background
.red
= color
.red
>> shift
;
5791 frame_background
.green
= color
.green
>> shift
;
5792 frame_background
.blue
= color
.blue
>> shift
;
5793 #endif /* HAVE_X_WINDOWS */
5795 fn_png_set_background (png_ptr
, &frame_background
,
5796 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5800 /* Update info structure. */
5801 fn_png_read_update_info (png_ptr
, info_ptr
);
5803 /* Get number of channels. Valid values are 1 for grayscale images
5804 and images with a palette, 2 for grayscale images with transparency
5805 information (alpha channel), 3 for RGB images, and 4 for RGB
5806 images with alpha channel, i.e. RGBA. If conversions above were
5807 sufficient we should only have 3 or 4 channels here. */
5808 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5809 xassert (channels
== 3 || channels
== 4);
5811 /* Number of bytes needed for one row of the image. */
5812 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5814 /* Allocate memory for the image. */
5815 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5816 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5817 for (i
= 0; i
< height
; ++i
)
5818 rows
[i
] = pixels
+ i
* row_bytes
;
5820 /* Read the entire image. */
5821 fn_png_read_image (png_ptr
, rows
);
5822 fn_png_read_end (png_ptr
, info_ptr
);
5829 /* Create the X image and pixmap. */
5830 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5834 /* Create an image and pixmap serving as mask if the PNG image
5835 contains an alpha channel. */
5838 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5839 &mask_img
, &img
->mask
))
5841 x_destroy_x_image (ximg
);
5842 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5843 img
->pixmap
= NO_PIXMAP
;
5847 /* Fill the X image and mask from PNG data. */
5848 init_color_table ();
5850 for (y
= 0; y
< height
; ++y
)
5852 png_byte
*p
= rows
[y
];
5854 for (x
= 0; x
< width
; ++x
)
5861 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5862 /* An alpha channel, aka mask channel, associates variable
5863 transparency with an image. Where other image formats
5864 support binary transparency---fully transparent or fully
5865 opaque---PNG allows up to 254 levels of partial transparency.
5866 The PNG library implements partial transparency by combining
5867 the image with a specified background color.
5869 I'm not sure how to handle this here nicely: because the
5870 background on which the image is displayed may change, for
5871 real alpha channel support, it would be necessary to create
5872 a new image for each possible background.
5874 What I'm doing now is that a mask is created if we have
5875 boolean transparency information. Otherwise I'm using
5876 the frame's background color to combine the image with. */
5881 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5887 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5888 /* Set IMG's background color from the PNG image, unless the user
5892 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5894 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5895 img
->background_valid
= 1;
5899 #ifdef COLOR_TABLE_SUPPORT
5900 /* Remember colors allocated for this image. */
5901 img
->colors
= colors_in_color_table (&img
->ncolors
);
5902 free_color_table ();
5903 #endif /* COLOR_TABLE_SUPPORT */
5906 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5911 img
->height
= height
;
5913 /* Maybe fill in the background field while we have ximg handy.
5914 Casting avoids a GCC warning. */
5915 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5917 /* Put the image into the pixmap, then free the X image and its buffer. */
5918 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5919 x_destroy_x_image (ximg
);
5921 /* Same for the mask. */
5924 /* Fill in the background_transparent field while we have the
5925 mask handy. Casting avoids a GCC warning. */
5926 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5928 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5929 x_destroy_x_image (mask_img
);
5935 #else /* HAVE_PNG */
5939 png_load (struct frame
*f
, struct image
*img
)
5941 return ns_load_image(f
, img
,
5942 image_spec_value (img
->spec
, QCfile
, NULL
),
5943 image_spec_value (img
->spec
, QCdata
, NULL
));
5945 #endif /* HAVE_NS */
5948 #endif /* !HAVE_PNG */
5952 /***********************************************************************
5954 ***********************************************************************/
5956 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5958 static int jpeg_image_p (Lisp_Object object
);
5959 static int jpeg_load (struct frame
*f
, struct image
*img
);
5961 /* The symbol `jpeg' identifying images of this type. */
5963 static Lisp_Object Qjpeg
;
5965 /* Indices of image specification fields in gs_format, below. */
5967 enum jpeg_keyword_index
5976 JPEG_HEURISTIC_MASK
,
5982 /* Vector of image_keyword structures describing the format
5983 of valid user-defined image specifications. */
5985 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5987 {":type", IMAGE_SYMBOL_VALUE
, 1},
5988 {":data", IMAGE_STRING_VALUE
, 0},
5989 {":file", IMAGE_STRING_VALUE
, 0},
5990 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5991 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5992 {":relief", IMAGE_INTEGER_VALUE
, 0},
5993 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5994 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5995 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5996 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5999 /* Structure describing the image type `jpeg'. */
6001 static struct image_type jpeg_type
=
6010 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6013 jpeg_image_p (Lisp_Object object
)
6015 struct image_keyword fmt
[JPEG_LAST
];
6017 memcpy (fmt
, jpeg_format
, sizeof fmt
);
6019 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6022 /* Must specify either the :data or :file keyword. */
6023 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6026 #endif /* HAVE_JPEG || HAVE_NS */
6030 /* Work around a warning about HAVE_STDLIB_H being redefined in
6032 #ifdef HAVE_STDLIB_H
6033 #undef HAVE_STDLIB_H
6034 #endif /* HAVE_STLIB_H */
6036 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6037 /* In older releases of the jpeg library, jpeglib.h will define boolean
6038 differently depending on __WIN32__, so make sure it is defined. */
6042 #include <jpeglib.h>
6045 #ifdef HAVE_STLIB_H_1
6046 #define HAVE_STDLIB_H 1
6051 /* JPEG library details. */
6052 DEF_IMGLIB_FN (void, jpeg_CreateDecompress
, (j_decompress_ptr
, int, size_t));
6053 DEF_IMGLIB_FN (boolean
, jpeg_start_decompress
, (j_decompress_ptr
));
6054 DEF_IMGLIB_FN (boolean
, jpeg_finish_decompress
, (j_decompress_ptr
));
6055 DEF_IMGLIB_FN (void, jpeg_destroy_decompress
, (j_decompress_ptr
));
6056 DEF_IMGLIB_FN (int, jpeg_read_header
, (j_decompress_ptr
, boolean
));
6057 DEF_IMGLIB_FN (JDIMENSION
, jpeg_read_scanlines
, (j_decompress_ptr
, JSAMPARRAY
, JDIMENSION
));
6058 DEF_IMGLIB_FN (struct jpeg_error_mgr
*, jpeg_std_error
, (struct jpeg_error_mgr
*));
6059 DEF_IMGLIB_FN (boolean
, jpeg_resync_to_restart
, (j_decompress_ptr
, int));
6062 init_jpeg_functions (Lisp_Object libraries
)
6066 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6069 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6070 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6071 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6072 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6073 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6074 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6075 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6076 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6080 /* Wrapper since we can't directly assign the function pointer
6081 to another function pointer that was declared more completely easily. */
6083 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6085 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6090 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6091 #define fn_jpeg_start_decompress jpeg_start_decompress
6092 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6093 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6094 #define fn_jpeg_read_header jpeg_read_header
6095 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6096 #define fn_jpeg_std_error jpeg_std_error
6097 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6099 #endif /* HAVE_NTGUI */
6101 struct my_jpeg_error_mgr
6103 struct jpeg_error_mgr pub
;
6104 jmp_buf setjmp_buffer
;
6108 static void my_error_exit (j_common_ptr
) NO_RETURN
;
6110 my_error_exit (j_common_ptr cinfo
)
6112 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6113 longjmp (mgr
->setjmp_buffer
, 1);
6117 /* Init source method for JPEG data source manager. Called by
6118 jpeg_read_header() before any data is actually read. See
6119 libjpeg.doc from the JPEG lib distribution. */
6122 our_common_init_source (j_decompress_ptr cinfo
)
6127 /* Method to terminate data source. Called by
6128 jpeg_finish_decompress() after all data has been processed. */
6131 our_common_term_source (j_decompress_ptr cinfo
)
6136 /* Fill input buffer method for JPEG data source manager. Called
6137 whenever more data is needed. We read the whole image in one step,
6138 so this only adds a fake end of input marker at the end. */
6140 static JOCTET our_memory_buffer
[2];
6143 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6145 /* Insert a fake EOI marker. */
6146 struct jpeg_source_mgr
*src
= cinfo
->src
;
6148 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6149 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6151 src
->next_input_byte
= our_memory_buffer
;
6152 src
->bytes_in_buffer
= 2;
6157 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6158 is the JPEG data source manager. */
6161 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6163 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6167 if (num_bytes
> src
->bytes_in_buffer
)
6168 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6170 src
->bytes_in_buffer
-= num_bytes
;
6171 src
->next_input_byte
+= num_bytes
;
6176 /* Set up the JPEG lib for reading an image from DATA which contains
6177 LEN bytes. CINFO is the decompression info structure created for
6178 reading the image. */
6181 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6183 struct jpeg_source_mgr
*src
;
6185 if (cinfo
->src
== NULL
)
6187 /* First time for this JPEG object? */
6188 cinfo
->src
= (struct jpeg_source_mgr
*)
6189 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6190 sizeof (struct jpeg_source_mgr
));
6191 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6192 src
->next_input_byte
= data
;
6195 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6196 src
->init_source
= our_common_init_source
;
6197 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6198 src
->skip_input_data
= our_memory_skip_input_data
;
6199 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6200 src
->term_source
= our_common_term_source
;
6201 src
->bytes_in_buffer
= len
;
6202 src
->next_input_byte
= data
;
6206 struct jpeg_stdio_mgr
6208 struct jpeg_source_mgr mgr
;
6215 /* Size of buffer to read JPEG from file.
6216 Not too big, as we want to use alloc_small. */
6217 #define JPEG_STDIO_BUFFER_SIZE 8192
6220 /* Fill input buffer method for JPEG data source manager. Called
6221 whenever more data is needed. The data is read from a FILE *. */
6224 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6226 struct jpeg_stdio_mgr
*src
;
6228 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6233 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6235 src
->mgr
.bytes_in_buffer
= bytes
;
6238 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6240 src
->buffer
[0] = (JOCTET
) 0xFF;
6241 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6242 src
->mgr
.bytes_in_buffer
= 2;
6244 src
->mgr
.next_input_byte
= src
->buffer
;
6251 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6252 is the JPEG data source manager. */
6255 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6257 struct jpeg_stdio_mgr
*src
;
6258 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6260 while (num_bytes
> 0 && !src
->finished
)
6262 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6264 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6265 src
->mgr
.next_input_byte
+= num_bytes
;
6270 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6271 src
->mgr
.bytes_in_buffer
= 0;
6272 src
->mgr
.next_input_byte
= NULL
;
6274 our_stdio_fill_input_buffer (cinfo
);
6280 /* Set up the JPEG lib for reading an image from a FILE *.
6281 CINFO is the decompression info structure created for
6282 reading the image. */
6285 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6287 struct jpeg_stdio_mgr
*src
;
6289 if (cinfo
->src
!= NULL
)
6290 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6293 /* First time for this JPEG object? */
6294 cinfo
->src
= (struct jpeg_source_mgr
*)
6295 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6296 sizeof (struct jpeg_stdio_mgr
));
6297 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6298 src
->buffer
= (JOCTET
*)
6299 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6300 JPEG_STDIO_BUFFER_SIZE
);
6305 src
->mgr
.init_source
= our_common_init_source
;
6306 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6307 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6308 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6309 src
->mgr
.term_source
= our_common_term_source
;
6310 src
->mgr
.bytes_in_buffer
= 0;
6311 src
->mgr
.next_input_byte
= NULL
;
6315 /* Load image IMG for use on frame F. Patterned after example.c
6316 from the JPEG lib. */
6319 jpeg_load (struct frame
*f
, struct image
*img
)
6321 struct jpeg_decompress_struct cinfo
;
6322 struct my_jpeg_error_mgr mgr
;
6323 Lisp_Object file
, specified_file
;
6324 Lisp_Object specified_data
;
6325 FILE * volatile fp
= NULL
;
6327 int row_stride
, x
, y
;
6328 XImagePtr ximg
= NULL
;
6330 unsigned long *colors
;
6333 /* Open the JPEG file. */
6334 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6335 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6337 if (NILP (specified_data
))
6339 file
= x_find_image_file (specified_file
);
6340 if (!STRINGP (file
))
6342 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6346 fp
= fopen (SSDATA (file
), "rb");
6349 image_error ("Cannot open `%s'", file
, Qnil
);
6353 else if (!STRINGP (specified_data
))
6355 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6359 /* Customize libjpeg's error handling to call my_error_exit when an
6360 error is detected. This function will perform a longjmp. */
6361 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6362 mgr
.pub
.error_exit
= my_error_exit
;
6364 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6368 /* Called from my_error_exit. Display a JPEG error. */
6369 char buf
[JMSG_LENGTH_MAX
];
6370 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buf
);
6371 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6372 build_string (buf
));
6375 /* Close the input file and destroy the JPEG object. */
6377 fclose ((FILE *) fp
);
6378 fn_jpeg_destroy_decompress (&cinfo
);
6380 /* If we already have an XImage, free that. */
6381 x_destroy_x_image (ximg
);
6383 /* Free pixmap and colors. */
6384 x_clear_image (f
, img
);
6388 /* Create the JPEG decompression object. Let it read from fp.
6389 Read the JPEG image header. */
6390 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6392 if (NILP (specified_data
))
6393 jpeg_file_src (&cinfo
, (FILE *) fp
);
6395 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6396 SBYTES (specified_data
));
6398 fn_jpeg_read_header (&cinfo
, 1);
6400 /* Customize decompression so that color quantization will be used.
6401 Start decompression. */
6402 cinfo
.quantize_colors
= 1;
6403 fn_jpeg_start_decompress (&cinfo
);
6404 width
= img
->width
= cinfo
.output_width
;
6405 height
= img
->height
= cinfo
.output_height
;
6407 if (!check_image_size (f
, width
, height
))
6409 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6410 longjmp (mgr
.setjmp_buffer
, 2);
6413 /* Create X image and pixmap. */
6414 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6415 longjmp (mgr
.setjmp_buffer
, 2);
6417 /* Allocate colors. When color quantization is used,
6418 cinfo.actual_number_of_colors has been set with the number of
6419 colors generated, and cinfo.colormap is a two-dimensional array
6420 of color indices in the range 0..cinfo.actual_number_of_colors.
6421 No more than 255 colors will be generated. */
6425 if (cinfo
.out_color_components
> 2)
6426 ir
= 0, ig
= 1, ib
= 2;
6427 else if (cinfo
.out_color_components
> 1)
6428 ir
= 0, ig
= 1, ib
= 0;
6430 ir
= 0, ig
= 0, ib
= 0;
6432 /* Use the color table mechanism because it handles colors that
6433 cannot be allocated nicely. Such colors will be replaced with
6434 a default color, and we don't have to care about which colors
6435 can be freed safely, and which can't. */
6436 init_color_table ();
6437 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6440 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6442 /* Multiply RGB values with 255 because X expects RGB values
6443 in the range 0..0xffff. */
6444 int r
= cinfo
.colormap
[ir
][i
] << 8;
6445 int g
= cinfo
.colormap
[ig
][i
] << 8;
6446 int b
= cinfo
.colormap
[ib
][i
] << 8;
6447 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6450 #ifdef COLOR_TABLE_SUPPORT
6451 /* Remember those colors actually allocated. */
6452 img
->colors
= colors_in_color_table (&img
->ncolors
);
6453 free_color_table ();
6454 #endif /* COLOR_TABLE_SUPPORT */
6458 row_stride
= width
* cinfo
.output_components
;
6459 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6461 for (y
= 0; y
< height
; ++y
)
6463 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6464 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6465 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6469 fn_jpeg_finish_decompress (&cinfo
);
6470 fn_jpeg_destroy_decompress (&cinfo
);
6472 fclose ((FILE *) fp
);
6474 /* Maybe fill in the background field while we have ximg handy. */
6475 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6476 /* Casting avoids a GCC warning. */
6477 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6479 /* Put the image into the pixmap. */
6480 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6481 x_destroy_x_image (ximg
);
6485 #else /* HAVE_JPEG */
6489 jpeg_load (struct frame
*f
, struct image
*img
)
6491 return ns_load_image (f
, img
,
6492 image_spec_value (img
->spec
, QCfile
, NULL
),
6493 image_spec_value (img
->spec
, QCdata
, NULL
));
6495 #endif /* HAVE_NS */
6497 #endif /* !HAVE_JPEG */
6501 /***********************************************************************
6503 ***********************************************************************/
6505 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6507 static int tiff_image_p (Lisp_Object object
);
6508 static int tiff_load (struct frame
*f
, struct image
*img
);
6510 /* The symbol `tiff' identifying images of this type. */
6512 static Lisp_Object Qtiff
;
6514 /* Indices of image specification fields in tiff_format, below. */
6516 enum tiff_keyword_index
6525 TIFF_HEURISTIC_MASK
,
6532 /* Vector of image_keyword structures describing the format
6533 of valid user-defined image specifications. */
6535 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6537 {":type", IMAGE_SYMBOL_VALUE
, 1},
6538 {":data", IMAGE_STRING_VALUE
, 0},
6539 {":file", IMAGE_STRING_VALUE
, 0},
6540 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6541 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6542 {":relief", IMAGE_INTEGER_VALUE
, 0},
6543 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6544 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6545 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6546 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6547 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6550 /* Structure describing the image type `tiff'. */
6552 static struct image_type tiff_type
=
6561 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6564 tiff_image_p (Lisp_Object object
)
6566 struct image_keyword fmt
[TIFF_LAST
];
6567 memcpy (fmt
, tiff_format
, sizeof fmt
);
6569 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6572 /* Must specify either the :data or :file keyword. */
6573 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6576 #endif /* HAVE_TIFF || HAVE_NS */
6584 /* TIFF library details. */
6585 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetErrorHandler
, (TIFFErrorHandler
));
6586 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetWarningHandler
, (TIFFErrorHandler
));
6587 DEF_IMGLIB_FN (TIFF
*, TIFFOpen
, (const char *, const char *));
6588 DEF_IMGLIB_FN (TIFF
*, TIFFClientOpen
, (const char *, const char *, thandle_t
,
6589 TIFFReadWriteProc
, TIFFReadWriteProc
,
6590 TIFFSeekProc
, TIFFCloseProc
, TIFFSizeProc
,
6591 TIFFMapFileProc
, TIFFUnmapFileProc
));
6592 DEF_IMGLIB_FN (int, TIFFGetField
, (TIFF
*, ttag_t
, ...));
6593 DEF_IMGLIB_FN (int, TIFFReadRGBAImage
, (TIFF
*, uint32
, uint32
, uint32
*, int));
6594 DEF_IMGLIB_FN (void, TIFFClose
, (TIFF
*));
6595 DEF_IMGLIB_FN (int, TIFFSetDirectory
, (TIFF
*, tdir_t
));
6598 init_tiff_functions (Lisp_Object libraries
)
6602 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6605 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6606 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6607 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6608 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6609 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6610 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6611 LOAD_IMGLIB_FN (library
, TIFFClose
);
6612 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6618 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6619 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6620 #define fn_TIFFOpen TIFFOpen
6621 #define fn_TIFFClientOpen TIFFClientOpen
6622 #define fn_TIFFGetField TIFFGetField
6623 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6624 #define fn_TIFFClose TIFFClose
6625 #define fn_TIFFSetDirectory TIFFSetDirectory
6626 #endif /* HAVE_NTGUI */
6629 /* Reading from a memory buffer for TIFF images Based on the PNG
6630 memory source, but we have to provide a lot of extra functions.
6633 We really only need to implement read and seek, but I am not
6634 convinced that the TIFF library is smart enough not to destroy
6635 itself if we only hand it the function pointers we need to
6640 unsigned char *bytes
;
6647 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6649 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6651 if (size
> src
->len
- src
->index
)
6653 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6659 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6665 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6667 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6672 case SEEK_SET
: /* Go from beginning of source. */
6676 case SEEK_END
: /* Go from end of source. */
6677 idx
= src
->len
+ off
;
6680 case SEEK_CUR
: /* Go from current position. */
6681 idx
= src
->index
+ off
;
6684 default: /* Invalid `whence'. */
6688 if (idx
> src
->len
|| idx
< 0)
6696 tiff_close_memory (thandle_t data
)
6703 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6705 /* It is already _IN_ memory. */
6710 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6712 /* We don't need to do this. */
6716 tiff_size_of_memory (thandle_t data
)
6718 return ((tiff_memory_source
*) data
)->len
;
6722 static void tiff_error_handler (const char *, const char *, va_list)
6723 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6725 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6730 len
= sprintf (buf
, "TIFF error: %s ", title
);
6731 vsprintf (buf
+ len
, format
, ap
);
6732 add_to_log (buf
, Qnil
, Qnil
);
6736 static void tiff_warning_handler (const char *, const char *, va_list)
6737 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6739 tiff_warning_handler (const char *title
, const char *format
, va_list ap
)
6744 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6745 vsprintf (buf
+ len
, format
, ap
);
6746 add_to_log (buf
, Qnil
, Qnil
);
6750 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6754 tiff_load (struct frame
*f
, struct image
*img
)
6756 Lisp_Object file
, specified_file
;
6757 Lisp_Object specified_data
;
6759 int width
, height
, x
, y
, count
;
6763 tiff_memory_source memsrc
;
6766 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6767 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6769 fn_TIFFSetErrorHandler ((TIFFErrorHandler
) tiff_error_handler
);
6770 fn_TIFFSetWarningHandler ((TIFFErrorHandler
) tiff_warning_handler
);
6772 if (NILP (specified_data
))
6774 /* Read from a file */
6775 file
= x_find_image_file (specified_file
);
6776 if (!STRINGP (file
))
6778 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6782 /* Try to open the image file. */
6783 tiff
= fn_TIFFOpen (SSDATA (file
), "r");
6786 image_error ("Cannot open `%s'", file
, Qnil
);
6792 if (!STRINGP (specified_data
))
6794 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6798 /* Memory source! */
6799 memsrc
.bytes
= SDATA (specified_data
);
6800 memsrc
.len
= SBYTES (specified_data
);
6803 tiff
= fn_TIFFClientOpen ("memory_source", "r", (thandle_t
)&memsrc
,
6804 (TIFFReadWriteProc
) tiff_read_from_memory
,
6805 (TIFFReadWriteProc
) tiff_write_from_memory
,
6806 tiff_seek_in_memory
,
6808 tiff_size_of_memory
,
6814 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6819 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6820 if (INTEGERP (image
))
6822 int ino
= XFASTINT (image
);
6823 if (!fn_TIFFSetDirectory (tiff
, ino
))
6825 image_error ("Invalid image number `%s' in image `%s'",
6827 fn_TIFFClose (tiff
);
6832 /* Get width and height of the image, and allocate a raster buffer
6833 of width x height 32-bit values. */
6834 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6835 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6837 if (!check_image_size (f
, width
, height
))
6839 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6840 fn_TIFFClose (tiff
);
6844 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6846 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6848 /* Count the number of images in the file. */
6849 for (count
= 1; fn_TIFFSetDirectory (tiff
, count
); count
++)
6853 img
->data
.lisp_val
= Fcons (Qcount
,
6854 Fcons (make_number (count
),
6855 img
->data
.lisp_val
));
6857 fn_TIFFClose (tiff
);
6860 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6865 /* Create the X image and pixmap. */
6866 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6872 /* Initialize the color table. */
6873 init_color_table ();
6875 /* Process the pixel raster. Origin is in the lower-left corner. */
6876 for (y
= 0; y
< height
; ++y
)
6878 uint32
*row
= buf
+ y
* width
;
6880 for (x
= 0; x
< width
; ++x
)
6882 uint32 abgr
= row
[x
];
6883 int r
= TIFFGetR (abgr
) << 8;
6884 int g
= TIFFGetG (abgr
) << 8;
6885 int b
= TIFFGetB (abgr
) << 8;
6886 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6890 #ifdef COLOR_TABLE_SUPPORT
6891 /* Remember the colors allocated for the image. Free the color table. */
6892 img
->colors
= colors_in_color_table (&img
->ncolors
);
6893 free_color_table ();
6894 #endif /* COLOR_TABLE_SUPPORT */
6897 img
->height
= height
;
6899 /* Maybe fill in the background field while we have ximg handy. */
6900 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6901 /* Casting avoids a GCC warning on W32. */
6902 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6904 /* Put the image into the pixmap, then free the X image and its buffer. */
6905 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6906 x_destroy_x_image (ximg
);
6912 #else /* HAVE_TIFF */
6916 tiff_load (struct frame
*f
, struct image
*img
)
6918 return ns_load_image (f
, img
,
6919 image_spec_value (img
->spec
, QCfile
, NULL
),
6920 image_spec_value (img
->spec
, QCdata
, NULL
));
6922 #endif /* HAVE_NS */
6924 #endif /* !HAVE_TIFF */
6928 /***********************************************************************
6930 ***********************************************************************/
6932 #if defined (HAVE_GIF) || defined (HAVE_NS)
6934 static int gif_image_p (Lisp_Object object
);
6935 static int gif_load (struct frame
*f
, struct image
*img
);
6936 static void gif_clear_image (struct frame
*f
, struct image
*img
);
6938 /* The symbol `gif' identifying images of this type. */
6940 static Lisp_Object Qgif
;
6942 /* Indices of image specification fields in gif_format, below. */
6944 enum gif_keyword_index
6960 /* Vector of image_keyword structures describing the format
6961 of valid user-defined image specifications. */
6963 static const struct image_keyword gif_format
[GIF_LAST
] =
6965 {":type", IMAGE_SYMBOL_VALUE
, 1},
6966 {":data", IMAGE_STRING_VALUE
, 0},
6967 {":file", IMAGE_STRING_VALUE
, 0},
6968 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6969 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6970 {":relief", IMAGE_INTEGER_VALUE
, 0},
6971 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6972 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6973 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6974 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6975 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6978 /* Structure describing the image type `gif'. */
6980 static struct image_type gif_type
=
6989 /* Free X resources of GIF image IMG which is used on frame F. */
6992 gif_clear_image (struct frame
*f
, struct image
*img
)
6994 /* IMG->data.ptr_val may contain metadata with extension data. */
6995 img
->data
.lisp_val
= Qnil
;
6996 x_clear_image (f
, img
);
6999 /* Return non-zero if OBJECT is a valid GIF image specification. */
7002 gif_image_p (Lisp_Object object
)
7004 struct image_keyword fmt
[GIF_LAST
];
7005 memcpy (fmt
, gif_format
, sizeof fmt
);
7007 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7010 /* Must specify either the :data or :file keyword. */
7011 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7014 #endif /* HAVE_GIF */
7018 #if defined (HAVE_NTGUI)
7019 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7020 Undefine before redefining to avoid a preprocessor warning. */
7024 /* avoid conflict with QuickdrawText.h */
7025 #define DrawText gif_DrawText
7026 #include <gif_lib.h>
7029 #else /* HAVE_NTGUI */
7031 #include <gif_lib.h>
7033 #endif /* HAVE_NTGUI */
7038 /* GIF library details. */
7039 DEF_IMGLIB_FN (int, DGifCloseFile
, (GifFileType
*));
7040 DEF_IMGLIB_FN (int, DGifSlurp
, (GifFileType
*));
7041 DEF_IMGLIB_FN (GifFileType
*, DGifOpen
, (void *, InputFunc
));
7042 DEF_IMGLIB_FN (GifFileType
*, DGifOpenFileName
, (const char *));
7045 init_gif_functions (Lisp_Object libraries
)
7049 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7052 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7053 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7054 LOAD_IMGLIB_FN (library
, DGifOpen
);
7055 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7061 #define fn_DGifCloseFile DGifCloseFile
7062 #define fn_DGifSlurp DGifSlurp
7063 #define fn_DGifOpen DGifOpen
7064 #define fn_DGifOpenFileName DGifOpenFileName
7066 #endif /* HAVE_NTGUI */
7068 /* Reading a GIF image from memory
7069 Based on the PNG memory stuff to a certain extent. */
7073 unsigned char *bytes
;
7079 /* Make the current memory source available to gif_read_from_memory.
7080 It's done this way because not all versions of libungif support
7081 a UserData field in the GifFileType structure. */
7082 static gif_memory_source
*current_gif_memory_src
;
7085 gif_read_from_memory (GifFileType
*file
, GifByteType
*buf
, int len
)
7087 gif_memory_source
*src
= current_gif_memory_src
;
7089 if (len
> src
->len
- src
->index
)
7092 memcpy (buf
, src
->bytes
+ src
->index
, len
);
7098 /* Load GIF image IMG for use on frame F. Value is non-zero if
7101 static const int interlace_start
[] = {0, 4, 2, 1};
7102 static const int interlace_increment
[] = {8, 8, 4, 2};
7104 #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249
7107 gif_load (struct frame
*f
, struct image
*img
)
7109 Lisp_Object file
, specified_file
;
7110 Lisp_Object specified_data
;
7111 int rc
, width
, height
, x
, y
, i
;
7112 boolean transparent_p
= 0;
7114 ColorMapObject
*gif_color_map
;
7115 unsigned long pixel_colors
[256];
7118 int ino
, image_height
, image_width
;
7119 gif_memory_source memsrc
;
7120 unsigned char *raster
;
7121 unsigned int transparency_color_index
IF_LINT (= 0);
7123 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7124 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7126 if (NILP (specified_data
))
7128 file
= x_find_image_file (specified_file
);
7129 if (!STRINGP (file
))
7131 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7135 /* Open the GIF file. */
7136 gif
= fn_DGifOpenFileName (SSDATA (file
));
7139 image_error ("Cannot open `%s'", file
, Qnil
);
7145 if (!STRINGP (specified_data
))
7147 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
7151 /* Read from memory! */
7152 current_gif_memory_src
= &memsrc
;
7153 memsrc
.bytes
= SDATA (specified_data
);
7154 memsrc
.len
= SBYTES (specified_data
);
7157 gif
= fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7160 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7165 /* Before reading entire contents, check the declared image size. */
7166 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7168 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7169 fn_DGifCloseFile (gif
);
7173 /* Read entire contents. */
7174 rc
= fn_DGifSlurp (gif
);
7175 if (rc
== GIF_ERROR
)
7177 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7178 fn_DGifCloseFile (gif
);
7182 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7183 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7184 if (ino
>= gif
->ImageCount
)
7186 image_error ("Invalid image number `%s' in image `%s'",
7188 fn_DGifCloseFile (gif
);
7192 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++)
7193 if ((gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Function
7194 == GIF_LOCAL_DESCRIPTOR_EXTENSION
)
7195 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].ByteCount
== 4
7196 /* Transparency enabled? */
7197 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[0] & 1)
7200 transparency_color_index
7201 = (unsigned char) gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[3];
7204 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7205 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7206 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7207 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7208 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7209 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7211 width
= img
->width
= max (gif
->SWidth
,
7212 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7213 img
->corners
[RIGHT_CORNER
]));
7214 height
= img
->height
= max (gif
->SHeight
,
7215 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7216 img
->corners
[BOT_CORNER
]));
7218 if (!check_image_size (f
, width
, height
))
7220 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7221 fn_DGifCloseFile (gif
);
7225 /* Create the X image and pixmap. */
7226 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7228 fn_DGifCloseFile (gif
);
7232 /* Allocate colors. */
7233 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7235 gif_color_map
= gif
->SColorMap
;
7236 init_color_table ();
7237 memset (pixel_colors
, 0, sizeof pixel_colors
);
7240 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7242 if (transparent_p
&& transparency_color_index
== i
)
7244 Lisp_Object specified_bg
7245 = image_spec_value (img
->spec
, QCbackground
, NULL
);
7246 pixel_colors
[i
] = STRINGP (specified_bg
)
7247 ? x_alloc_image_color (f
, img
, specified_bg
,
7248 FRAME_BACKGROUND_PIXEL (f
))
7249 : FRAME_BACKGROUND_PIXEL (f
);
7253 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7254 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7255 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7256 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7260 #ifdef COLOR_TABLE_SUPPORT
7261 img
->colors
= colors_in_color_table (&img
->ncolors
);
7262 free_color_table ();
7263 #endif /* COLOR_TABLE_SUPPORT */
7265 /* Clear the part of the screen image that are not covered by
7266 the image from the GIF file. Full animated GIF support
7267 requires more than can be done here (see the gif89 spec,
7268 disposal methods). Let's simply assume that the part
7269 not covered by a sub-image is in the frame's background color. */
7270 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7271 for (x
= 0; x
< width
; ++x
)
7272 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7274 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7275 for (x
= 0; x
< width
; ++x
)
7276 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7278 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7280 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7281 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7282 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7283 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7286 /* Read the GIF image into the X image. We use a local variable
7287 `raster' here because RasterBits below is a char *, and invites
7288 problems with bytes >= 0x80. */
7289 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7291 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7294 int row
= interlace_start
[0];
7298 for (y
= 0; y
< image_height
; y
++)
7300 if (row
>= image_height
)
7302 row
= interlace_start
[++pass
];
7303 while (row
>= image_height
)
7304 row
= interlace_start
[++pass
];
7307 for (x
= 0; x
< image_width
; x
++)
7309 int c
= raster
[(y
* image_width
) + x
];
7310 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7311 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7314 row
+= interlace_increment
[pass
];
7319 for (y
= 0; y
< image_height
; ++y
)
7320 for (x
= 0; x
< image_width
; ++x
)
7322 int c
= raster
[y
* image_width
+ x
];
7323 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7324 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7328 /* Save GIF image extension data for `image-metadata'.
7329 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7330 img
->data
.lisp_val
= Qnil
;
7331 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7333 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7334 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7335 /* Append (... FUNCTION "BYTES") */
7336 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7337 Fcons (make_number (ext
->Function
),
7338 img
->data
.lisp_val
));
7339 img
->data
.lisp_val
= Fcons (Qextension_data
,
7340 Fcons (Fnreverse (img
->data
.lisp_val
),
7343 if (gif
->ImageCount
> 1)
7344 img
->data
.lisp_val
= Fcons (Qcount
,
7345 Fcons (make_number (gif
->ImageCount
),
7346 img
->data
.lisp_val
));
7348 fn_DGifCloseFile (gif
);
7350 /* Maybe fill in the background field while we have ximg handy. */
7351 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7352 /* Casting avoids a GCC warning. */
7353 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7355 /* Put the image into the pixmap, then free the X image and its buffer. */
7356 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7357 x_destroy_x_image (ximg
);
7362 #else /* !HAVE_GIF */
7366 gif_load (struct frame
*f
, struct image
*img
)
7368 return ns_load_image (f
, img
,
7369 image_spec_value (img
->spec
, QCfile
, NULL
),
7370 image_spec_value (img
->spec
, QCdata
, NULL
));
7372 #endif /* HAVE_NS */
7374 #endif /* HAVE_GIF */
7377 /***********************************************************************
7379 ***********************************************************************/
7380 #if defined (HAVE_IMAGEMAGICK)
7382 Lisp_Object Qimagemagick
;
7384 /* Indices of image specification fields in imagemagick_format. */
7386 enum imagemagick_keyword_index
7394 IMAGEMAGICK_ALGORITHM
,
7395 IMAGEMAGICK_HEURISTIC_MASK
,
7397 IMAGEMAGICK_BACKGROUND
,
7400 IMAGEMAGICK_ROTATION
,
7405 /* Vector of image_keyword structures describing the format
7406 of valid user-defined image specifications. */
7408 static struct image_keyword imagemagick_format
[IMAGEMAGICK_LAST
] =
7410 {":type", IMAGE_SYMBOL_VALUE
, 1},
7411 {":data", IMAGE_STRING_VALUE
, 0},
7412 {":file", IMAGE_STRING_VALUE
, 0},
7413 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7414 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7415 {":relief", IMAGE_INTEGER_VALUE
, 0},
7416 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7417 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7418 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7419 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
7420 {":height", IMAGE_INTEGER_VALUE
, 0},
7421 {":width", IMAGE_INTEGER_VALUE
, 0},
7422 {":rotation", IMAGE_NUMBER_VALUE
, 0},
7423 {":crop", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
7426 /* Free X resources of imagemagick image IMG which is used on frame F. */
7429 imagemagick_clear_image (struct frame
*f
,
7432 x_clear_image (f
, img
);
7435 /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do
7436 this by calling parse_image_spec and supplying the keywords that
7437 identify the IMAGEMAGICK format. */
7440 imagemagick_image_p (Lisp_Object object
)
7442 struct image_keyword fmt
[IMAGEMAGICK_LAST
];
7443 memcpy (fmt
, imagemagick_format
, sizeof fmt
);
7445 if (!parse_image_spec (object
, fmt
, IMAGEMAGICK_LAST
, Qimagemagick
))
7448 /* Must specify either the :data or :file keyword. */
7449 return fmt
[IMAGEMAGICK_FILE
].count
+ fmt
[IMAGEMAGICK_DATA
].count
== 1;
7452 /* The GIF library also defines DrawRectangle, but its never used in Emacs.
7453 Therefore rename the function so it doesnt collide with ImageMagick. */
7454 #define DrawRectangle DrawRectangleGif
7455 #include <wand/MagickWand.h>
7457 /* imagemagick_load_image is a helper function for imagemagick_load,
7458 which does the actual loading given contents and size, apart from
7459 frame and image structures, passed from imagemagick_load.
7461 Uses librimagemagick to do most of the image processing.
7463 Return non-zero if successful.
7467 imagemagick_load_image (/* Pointer to emacs frame structure. */
7469 /* Pointer to emacs image structure. */
7471 /* String containing the IMAGEMAGICK data to
7473 unsigned char *contents
,
7474 /* Size of data in bytes. */
7476 /* Filename, either pass filename or
7478 unsigned char *filename
)
7480 unsigned long width
;
7481 unsigned long height
;
7487 Lisp_Object specified_bg
;
7492 MagickWand
*image_wand
;
7493 MagickWand
*ping_wand
;
7494 PixelIterator
*iterator
;
7496 MagickPixelPacket pixel
;
7499 Lisp_Object crop
, geometry
;
7501 int desired_width
, desired_height
;
7503 int imagemagick_rendermethod
;
7505 ImageInfo
*image_info
;
7506 ExceptionInfo
*exception
;
7510 /* Handle image index for image types who can contain more than one image.
7511 Interface :index is same as for GIF. First we "ping" the image to see how
7512 many sub-images it contains. Pinging is faster than loading the image to
7513 find out things about it. */
7515 /* Initialize the imagemagick environment. */
7516 MagickWandGenesis ();
7517 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7518 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7519 ping_wand
= NewMagickWand ();
7520 MagickSetResolution (ping_wand
, 2, 2);
7521 if (filename
!= NULL
)
7523 status
= MagickPingImage (ping_wand
, filename
);
7527 status
= MagickPingImageBlob (ping_wand
, contents
, size
);
7530 if (ino
>= MagickGetNumberImages (ping_wand
))
7532 image_error ("Invalid image number `%s' in image `%s'",
7534 DestroyMagickWand (ping_wand
);
7538 if (MagickGetNumberImages(ping_wand
) > 1)
7539 img
->data
.lisp_val
=
7541 Fcons (make_number (MagickGetNumberImages (ping_wand
)),
7542 img
->data
.lisp_val
));
7544 DestroyMagickWand (ping_wand
);
7546 /* Now, after pinging, we know how many images are inside the
7547 file. If it's not a bundle, the number is one. */
7549 if (filename
!= NULL
)
7551 image_info
= CloneImageInfo ((ImageInfo
*) NULL
);
7552 (void) strcpy (image_info
->filename
, filename
);
7553 image_info
->number_scenes
= 1;
7554 image_info
->scene
= ino
;
7555 exception
= AcquireExceptionInfo ();
7557 im_image
= ReadImage (image_info
, exception
);
7558 DestroyExceptionInfo (exception
);
7560 if (im_image
!= NULL
)
7562 image_wand
= NewMagickWandFromImage (im_image
);
7563 DestroyImage(im_image
);
7564 status
= MagickTrue
;
7567 status
= MagickFalse
;
7571 image_wand
= NewMagickWand ();
7572 status
= MagickReadImageBlob (image_wand
, contents
, size
);
7575 if (status
== MagickFalse
) goto imagemagick_error
;
7577 /* If width and/or height is set in the display spec assume we want
7578 to scale to those values. If either h or w is unspecified, the
7579 unspecified should be calculated from the specified to preserve
7582 value
= image_spec_value (img
->spec
, QCwidth
, NULL
);
7583 desired_width
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7584 value
= image_spec_value (img
->spec
, QCheight
, NULL
);
7585 desired_height
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7587 height
= MagickGetImageHeight (image_wand
);
7588 width
= MagickGetImageWidth (image_wand
);
7590 if (desired_width
!= -1 && desired_height
== -1)
7591 /* w known, calculate h. */
7592 desired_height
= (double) desired_width
/ width
* height
;
7593 if (desired_width
== -1 && desired_height
!= -1)
7594 /* h known, calculate w. */
7595 desired_width
= (double) desired_height
/ height
* width
;
7596 if (desired_width
!= -1 && desired_height
!= -1)
7598 status
= MagickScaleImage (image_wand
, desired_width
, desired_height
);
7599 if (status
== MagickFalse
)
7601 image_error ("Imagemagick scale failed", Qnil
, Qnil
);
7602 goto imagemagick_error
;
7606 /* crop behaves similar to image slicing in Emacs but is more memory
7608 crop
= image_spec_value (img
->spec
, QCcrop
, NULL
);
7610 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7612 /* After some testing, it seems MagickCropImage is the fastest crop
7613 function in ImageMagick. This crop function seems to do less copying
7614 than the alternatives, but it still reads the entire image into memory
7615 before croping, which is aparently difficult to avoid when using
7618 w
= XFASTINT (XCAR (crop
));
7620 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7622 h
= XFASTINT (XCAR (crop
));
7624 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7626 x
= XFASTINT (XCAR (crop
));
7628 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7630 y
= XFASTINT (XCAR (crop
));
7631 MagickCropImage (image_wand
, w
, h
, x
, y
);
7637 /* Furthermore :rotation. we need background color and angle for
7640 TODO background handling for rotation specified_bg =
7641 image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP
7643 value
= image_spec_value (img
->spec
, QCrotation
, NULL
);
7646 PixelWand
* background
= NewPixelWand ();
7647 PixelSetColor (background
, "#ffffff");/*TODO remove hardcode*/
7649 rotation
= extract_float (value
);
7651 status
= MagickRotateImage (image_wand
, background
, rotation
);
7652 DestroyPixelWand (background
);
7653 if (status
== MagickFalse
)
7655 image_error ("Imagemagick image rotate failed", Qnil
, Qnil
);
7656 goto imagemagick_error
;
7660 /* Finaly we are done manipulating the image, figure out resulting
7661 width, height, and then transfer ownerwship to Emacs. */
7662 height
= MagickGetImageHeight (image_wand
);
7663 width
= MagickGetImageWidth (image_wand
);
7665 if (! check_image_size (f
, width
, height
))
7667 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7668 goto imagemagick_error
;
7671 /* We can now get a valid pixel buffer from the imagemagick file, if all
7674 init_color_table ();
7675 imagemagick_rendermethod
= (INTEGERP (Vimagemagick_render_type
)
7676 ? XFASTINT (Vimagemagick_render_type
) : 0);
7677 if (imagemagick_rendermethod
== 0)
7679 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7680 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
7681 &ximg
, &img
->pixmap
))
7683 #ifdef COLOR_TABLE_SUPPORT
7684 free_color_table ();
7686 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7687 goto imagemagick_error
;
7690 /* Copy imagegmagick image to x with primitive yet robust pixel
7691 pusher loop. This has been tested a lot with many different
7694 /* Copy pixels from the imagemagick image structure to the x image map. */
7695 iterator
= NewPixelIterator (image_wand
);
7696 if (iterator
== (PixelIterator
*) NULL
)
7698 #ifdef COLOR_TABLE_SUPPORT
7699 free_color_table ();
7701 x_destroy_x_image (ximg
);
7702 image_error ("Imagemagick pixel iterator creation failed",
7704 goto imagemagick_error
;
7707 for (y
= 0; y
< (long) MagickGetImageHeight (image_wand
); y
++)
7709 pixels
= PixelGetNextIteratorRow (iterator
, &width
);
7710 if (pixels
== (PixelWand
**) NULL
)
7712 for (x
= 0; x
< (long) width
; x
++)
7714 PixelGetMagickColor (pixels
[x
], &pixel
);
7715 XPutPixel (ximg
, x
, y
,
7716 lookup_rgb_color (f
,
7722 DestroyPixelIterator (iterator
);
7725 if (imagemagick_rendermethod
== 1)
7727 /* Magicexportimage is normaly faster than pixelpushing. This
7728 method is also well tested. Some aspects of this method are
7729 ad-hoc and needs to be more researched. */
7730 int imagedepth
= 24;/*MagickGetImageDepth(image_wand);*/
7731 char* exportdepth
= imagedepth
<= 8 ? "I" : "BGRP";/*"RGBP";*/
7732 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7733 if (!x_create_x_image_and_pixmap (f
, width
, height
, imagedepth
,
7734 &ximg
, &img
->pixmap
))
7736 #ifdef COLOR_TABLE_SUPPORT
7737 free_color_table ();
7739 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7740 goto imagemagick_error
;
7744 /* Oddly, the below code doesnt seem to work:*/
7745 /* switch(ximg->bitmap_unit){ */
7747 /* pixelwidth=CharPixel; */
7750 /* pixelwidth=ShortPixel; */
7753 /* pixelwidth=LongPixel; */
7757 Here im just guessing the format of the bitmap.
7758 happens to work fine for:
7761 seems about 3 times as fast as pixel pushing(not carefully measured)
7763 pixelwidth
= CharPixel
;/*??? TODO figure out*/
7764 #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS
7765 MagickExportImagePixels (image_wand
,
7770 /*&(img->pixmap));*/
7773 image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!",
7779 #ifdef COLOR_TABLE_SUPPORT
7780 /* Remember colors allocated for this image. */
7781 img
->colors
= colors_in_color_table (&img
->ncolors
);
7782 free_color_table ();
7783 #endif /* COLOR_TABLE_SUPPORT */
7787 img
->height
= height
;
7789 /* Put the image into the pixmap, then free the X image and its
7791 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7792 x_destroy_x_image (ximg
);
7795 /* Final cleanup. image_wand should be the only resource left. */
7796 DestroyMagickWand (image_wand
);
7797 /* `MagickWandTerminus' terminates the imagemagick environment. */
7798 MagickWandTerminus ();
7803 DestroyMagickWand (image_wand
);
7804 MagickWandTerminus ();
7805 /* TODO more cleanup. */
7806 image_error ("Error parsing IMAGEMAGICK image `%s'", img
->spec
, Qnil
);
7811 /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if
7812 successful. this function will go into the imagemagick_type structure, and
7813 the prototype thus needs to be compatible with that structure. */
7816 imagemagick_load (struct frame
*f
,
7820 Lisp_Object file_name
;
7822 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7823 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7824 if (STRINGP (file_name
))
7828 file
= x_find_image_file (file_name
);
7829 if (!STRINGP (file
))
7831 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7834 success_p
= imagemagick_load_image (f
, img
, 0, 0, SDATA (file
));
7836 /* Else its not a file, its a lisp object. Load the image from a
7837 lisp object rather than a file. */
7842 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7843 if (!STRINGP (data
))
7845 image_error ("Invalid image data `%s'", data
, Qnil
);
7848 success_p
= imagemagick_load_image (f
, img
, SDATA (data
),
7849 SBYTES (data
), NULL
);
7855 /* Structure describing the image type `imagemagick'. Its the same
7856 type of structure defined for all image formats, handled by Emacs
7857 image functions. See struct image_type in dispextern.h. */
7859 static struct image_type imagemagick_type
=
7861 /* An identifier showing that this is an image structure for the
7862 IMAGEMAGICK format. */
7864 /* Handle to a function that can be used to identify a IMAGEMAGICK
7866 imagemagick_image_p
,
7867 /* Handle to function used to load a IMAGEMAGICK file. */
7869 /* Handle to function to free resources for IMAGEMAGICK. */
7870 imagemagick_clear_image
,
7871 /* An internal field to link to the next image type in a list of
7872 image types, will be filled in when registering the format. */
7877 DEFUN ("imagemagick-types", Fimagemagick_types
, Simagemagick_types
, 0, 0, 0,
7878 doc
: /* Return the image types supported by ImageMagick.
7879 Note that ImageMagick recognizes many file-types that Emacs does not recognize
7880 as images, such as .c. */)
7883 Lisp_Object typelist
= Qnil
;
7886 char **imtypes
= GetMagickList ("*", &numf
, &ex
);
7888 Lisp_Object Qimagemagicktype
;
7889 for (i
= 0; i
< numf
; i
++)
7891 Qimagemagicktype
= intern (imtypes
[i
]);
7892 typelist
= Fcons (Qimagemagicktype
, typelist
);
7897 #endif /* defined (HAVE_IMAGEMAGICK) */
7901 /***********************************************************************
7903 ***********************************************************************/
7905 #if defined (HAVE_RSVG)
7907 /* Function prototypes. */
7909 static int svg_image_p (Lisp_Object object
);
7910 static int svg_load (struct frame
*f
, struct image
*img
);
7912 static int svg_load_image (struct frame
*, struct image
*,
7913 unsigned char *, unsigned int);
7915 /* The symbol `svg' identifying images of this type. */
7919 /* Indices of image specification fields in svg_format, below. */
7921 enum svg_keyword_index
7936 /* Vector of image_keyword structures describing the format
7937 of valid user-defined image specifications. */
7939 static const struct image_keyword svg_format
[SVG_LAST
] =
7941 {":type", IMAGE_SYMBOL_VALUE
, 1},
7942 {":data", IMAGE_STRING_VALUE
, 0},
7943 {":file", IMAGE_STRING_VALUE
, 0},
7944 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7945 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7946 {":relief", IMAGE_INTEGER_VALUE
, 0},
7947 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7948 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7949 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7950 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7953 /* Structure describing the image type `svg'. Its the same type of
7954 structure defined for all image formats, handled by emacs image
7955 functions. See struct image_type in dispextern.h. */
7957 static struct image_type svg_type
=
7959 /* An identifier showing that this is an image structure for the SVG format. */
7961 /* Handle to a function that can be used to identify a SVG file. */
7963 /* Handle to function used to load a SVG file. */
7965 /* Handle to function to free sresources for SVG. */
7967 /* An internal field to link to the next image type in a list of
7968 image types, will be filled in when registering the format. */
7973 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7974 this by calling parse_image_spec and supplying the keywords that
7975 identify the SVG format. */
7978 svg_image_p (Lisp_Object object
)
7980 struct image_keyword fmt
[SVG_LAST
];
7981 memcpy (fmt
, svg_format
, sizeof fmt
);
7983 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7986 /* Must specify either the :data or :file keyword. */
7987 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7990 #include <librsvg/rsvg.h>
7994 /* SVG library functions. */
7995 DEF_IMGLIB_FN (RsvgHandle
*, rsvg_handle_new
);
7996 DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions
);
7997 DEF_IMGLIB_FN (gboolean
, rsvg_handle_write
);
7998 DEF_IMGLIB_FN (gboolean
, rsvg_handle_close
);
7999 DEF_IMGLIB_FN (GdkPixbuf
*, rsvg_handle_get_pixbuf
);
8000 DEF_IMGLIB_FN (void, rsvg_handle_free
);
8002 DEF_IMGLIB_FN (int, gdk_pixbuf_get_width
);
8003 DEF_IMGLIB_FN (int, gdk_pixbuf_get_height
);
8004 DEF_IMGLIB_FN (guchar
*, gdk_pixbuf_get_pixels
);
8005 DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride
);
8006 DEF_IMGLIB_FN (GdkColorspace
, gdk_pixbuf_get_colorspace
);
8007 DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels
);
8008 DEF_IMGLIB_FN (gboolean
, gdk_pixbuf_get_has_alpha
);
8009 DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample
);
8011 DEF_IMGLIB_FN (void, g_type_init
);
8012 DEF_IMGLIB_FN (void, g_object_unref
);
8013 DEF_IMGLIB_FN (void, g_error_free
);
8015 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
8018 init_svg_functions (Lisp_Object libraries
)
8020 HMODULE library
, gdklib
, glib
, gobject
;
8022 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
8023 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
8024 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
8025 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
8028 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
8029 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
8030 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
8031 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
8032 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
8033 LOAD_IMGLIB_FN (library
, rsvg_handle_free
);
8035 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
8036 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
8037 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
8038 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
8039 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
8040 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
8041 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
8042 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
8044 LOAD_IMGLIB_FN (gobject
, g_type_init
);
8045 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
8046 LOAD_IMGLIB_FN (glib
, g_error_free
);
8052 /* The following aliases for library functions allow dynamic loading
8053 to be used on some platforms. */
8054 #define fn_rsvg_handle_new rsvg_handle_new
8055 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
8056 #define fn_rsvg_handle_write rsvg_handle_write
8057 #define fn_rsvg_handle_close rsvg_handle_close
8058 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
8059 #define fn_rsvg_handle_free rsvg_handle_free
8061 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
8062 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
8063 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
8064 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
8065 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
8066 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
8067 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
8068 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
8070 #define fn_g_type_init g_type_init
8071 #define fn_g_object_unref g_object_unref
8072 #define fn_g_error_free g_error_free
8073 #endif /* !HAVE_NTGUI */
8075 /* Load SVG image IMG for use on frame F. Value is non-zero if
8076 successful. this function will go into the svg_type structure, and
8077 the prototype thus needs to be compatible with that structure. */
8080 svg_load (struct frame
*f
, struct image
*img
)
8083 Lisp_Object file_name
;
8085 /* If IMG->spec specifies a file name, create a non-file spec from it. */
8086 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
8087 if (STRINGP (file_name
))
8090 unsigned char *contents
;
8093 file
= x_find_image_file (file_name
);
8094 if (!STRINGP (file
))
8096 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
8100 /* Read the entire file into memory. */
8101 contents
= slurp_file (SDATA (file
), &size
);
8102 if (contents
== NULL
)
8104 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
8107 /* If the file was slurped into memory properly, parse it. */
8108 success_p
= svg_load_image (f
, img
, contents
, size
);
8111 /* Else its not a file, its a lisp object. Load the image from a
8112 lisp object rather than a file. */
8117 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
8118 if (!STRINGP (data
))
8120 image_error ("Invalid image data `%s'", data
, Qnil
);
8123 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
8129 /* svg_load_image is a helper function for svg_load, which does the
8130 actual loading given contents and size, apart from frame and image
8131 structures, passed from svg_load.
8133 Uses librsvg to do most of the image processing.
8135 Returns non-zero when successful. */
8137 svg_load_image (struct frame
*f
, /* Pointer to emacs frame structure. */
8138 struct image
*img
, /* Pointer to emacs image structure. */
8139 unsigned char *contents
, /* String containing the SVG XML data to be parsed. */
8140 unsigned int size
) /* Size of data in bytes. */
8142 RsvgHandle
*rsvg_handle
;
8143 RsvgDimensionData dimension_data
;
8144 GError
*error
= NULL
;
8148 const guint8
*pixels
;
8151 Lisp_Object specified_bg
;
8156 /* g_type_init is a glib function that must be called prior to using
8157 gnome type library functions. */
8159 /* Make a handle to a new rsvg object. */
8160 rsvg_handle
= fn_rsvg_handle_new ();
8162 /* Parse the contents argument and fill in the rsvg_handle. */
8163 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &error
);
8164 if (error
) goto rsvg_error
;
8166 /* The parsing is complete, rsvg_handle is ready to used, close it
8167 for further writes. */
8168 fn_rsvg_handle_close (rsvg_handle
, &error
);
8169 if (error
) goto rsvg_error
;
8171 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
8172 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
8174 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8178 /* We can now get a valid pixel buffer from the svg file, if all
8180 pixbuf
= fn_rsvg_handle_get_pixbuf (rsvg_handle
);
8181 if (!pixbuf
) goto rsvg_error
;
8182 fn_g_object_unref (rsvg_handle
);
8184 /* Extract some meta data from the svg handle. */
8185 width
= fn_gdk_pixbuf_get_width (pixbuf
);
8186 height
= fn_gdk_pixbuf_get_height (pixbuf
);
8187 pixels
= fn_gdk_pixbuf_get_pixels (pixbuf
);
8188 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
8190 /* Validate the svg meta data. */
8191 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
8192 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
8193 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
8194 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
8196 /* Try to create a x pixmap to hold the svg pixmap. */
8197 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8199 fn_g_object_unref (pixbuf
);
8203 init_color_table ();
8205 /* Handle alpha channel by combining the image with a background
8207 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8208 if (!STRINGP (specified_bg
)
8209 || !x_defined_color (f
, SDATA (specified_bg
), &background
, 0))
8212 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8213 x_query_color (f
, &background
);
8215 ns_query_color (FRAME_BACKGROUND_COLOR (f
), &background
, 1);
8219 /* SVG pixmaps specify transparency in the last byte, so right
8220 shift 8 bits to get rid of it, since emacs doesn't support
8222 background
.red
>>= 8;
8223 background
.green
>>= 8;
8224 background
.blue
>>= 8;
8226 /* This loop handles opacity values, since Emacs assumes
8227 non-transparent images. Each pixel must be "flattened" by
8228 calculating the resulting color, given the transparency of the
8229 pixel, and the image background color. */
8230 for (y
= 0; y
< height
; ++y
)
8232 for (x
= 0; x
< width
; ++x
)
8242 opacity
= *pixels
++;
8244 red
= ((red
* opacity
)
8245 + (background
.red
* ((1 << 8) - opacity
)));
8246 green
= ((green
* opacity
)
8247 + (background
.green
* ((1 << 8) - opacity
)));
8248 blue
= ((blue
* opacity
)
8249 + (background
.blue
* ((1 << 8) - opacity
)));
8251 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
8254 pixels
+= rowstride
- 4 * width
;
8257 #ifdef COLOR_TABLE_SUPPORT
8258 /* Remember colors allocated for this image. */
8259 img
->colors
= colors_in_color_table (&img
->ncolors
);
8260 free_color_table ();
8261 #endif /* COLOR_TABLE_SUPPORT */
8263 fn_g_object_unref (pixbuf
);
8266 img
->height
= height
;
8268 /* Maybe fill in the background field while we have ximg handy.
8269 Casting avoids a GCC warning. */
8270 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
8272 /* Put the image into the pixmap, then free the X image and its
8274 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8275 x_destroy_x_image (ximg
);
8280 fn_g_object_unref (rsvg_handle
);
8281 /* FIXME: Use error->message so the user knows what is the actual
8282 problem with the image. */
8283 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
8284 fn_g_error_free (error
);
8288 #endif /* defined (HAVE_RSVG) */
8293 /***********************************************************************
8295 ***********************************************************************/
8297 #ifdef HAVE_X_WINDOWS
8298 #define HAVE_GHOSTSCRIPT 1
8299 #endif /* HAVE_X_WINDOWS */
8301 #ifdef HAVE_GHOSTSCRIPT
8303 static int gs_image_p (Lisp_Object object
);
8304 static int gs_load (struct frame
*f
, struct image
*img
);
8305 static void gs_clear_image (struct frame
*f
, struct image
*img
);
8307 /* Keyword symbols. */
8309 static Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8311 /* Indices of image specification fields in gs_format, below. */
8313 enum gs_keyword_index
8331 /* Vector of image_keyword structures describing the format
8332 of valid user-defined image specifications. */
8334 static const struct image_keyword gs_format
[GS_LAST
] =
8336 {":type", IMAGE_SYMBOL_VALUE
, 1},
8337 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8338 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8339 {":file", IMAGE_STRING_VALUE
, 1},
8340 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8341 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8342 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8343 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8344 {":relief", IMAGE_INTEGER_VALUE
, 0},
8345 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8346 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8347 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8348 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8351 /* Structure describing the image type `ghostscript'. */
8353 static struct image_type gs_type
=
8363 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8366 gs_clear_image (struct frame
*f
, struct image
*img
)
8368 /* IMG->data.ptr_val may contain a recorded colormap. */
8369 xfree (img
->data
.ptr_val
);
8370 x_clear_image (f
, img
);
8374 /* Return non-zero if OBJECT is a valid Ghostscript image
8378 gs_image_p (Lisp_Object object
)
8380 struct image_keyword fmt
[GS_LAST
];
8384 memcpy (fmt
, gs_format
, sizeof fmt
);
8386 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8389 /* Bounding box must be a list or vector containing 4 integers. */
8390 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8393 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8394 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8399 else if (VECTORP (tem
))
8401 if (ASIZE (tem
) != 4)
8403 for (i
= 0; i
< 4; ++i
)
8404 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8414 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8418 gs_load (struct frame
*f
, struct image
*img
)
8421 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8423 double in_width
, in_height
;
8424 Lisp_Object pixel_colors
= Qnil
;
8426 /* Compute pixel size of pixmap needed from the given size in the
8427 image specification. Sizes in the specification are in pt. 1 pt
8428 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8430 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8431 in_width
= INTEGERP (pt_width
) ? XFASTINT (pt_width
) / 72.0 : 0;
8432 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8433 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8434 in_height
= INTEGERP (pt_height
) ? XFASTINT (pt_height
) / 72.0 : 0;
8435 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8437 if (!check_image_size (f
, img
->width
, img
->height
))
8439 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8443 /* Create the pixmap. */
8444 xassert (img
->pixmap
== NO_PIXMAP
);
8446 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8448 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8449 img
->width
, img
->height
,
8450 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8455 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8459 /* Call the loader to fill the pixmap. It returns a process object
8460 if successful. We do not record_unwind_protect here because
8461 other places in redisplay like calling window scroll functions
8462 don't either. Let the Lisp loader use `unwind-protect' instead. */
8463 sprintf (buffer
, "%lu %lu",
8464 (unsigned long) FRAME_X_WINDOW (f
),
8465 (unsigned long) img
->pixmap
);
8466 window_and_pixmap_id
= build_string (buffer
);
8468 sprintf (buffer
, "%lu %lu",
8469 FRAME_FOREGROUND_PIXEL (f
),
8470 FRAME_BACKGROUND_PIXEL (f
));
8471 pixel_colors
= build_string (buffer
);
8473 XSETFRAME (frame
, f
);
8474 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8476 loader
= intern ("gs-load-image");
8478 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8479 make_number (img
->width
),
8480 make_number (img
->height
),
8481 window_and_pixmap_id
,
8483 return PROCESSP (img
->data
.lisp_val
);
8487 /* Kill the Ghostscript process that was started to fill PIXMAP on
8488 frame F. Called from XTread_socket when receiving an event
8489 telling Emacs that Ghostscript has finished drawing. */
8492 x_kill_gs_process (Pixmap pixmap
, struct frame
*f
)
8494 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
8498 /* Find the image containing PIXMAP. */
8499 for (i
= 0; i
< c
->used
; ++i
)
8500 if (c
->images
[i
]->pixmap
== pixmap
)
8503 /* Should someone in between have cleared the image cache, for
8504 instance, give up. */
8508 /* Kill the GS process. We should have found PIXMAP in the image
8509 cache and its image should contain a process object. */
8511 xassert (PROCESSP (img
->data
.lisp_val
));
8512 Fkill_process (img
->data
.lisp_val
, Qnil
);
8513 img
->data
.lisp_val
= Qnil
;
8515 #if defined (HAVE_X_WINDOWS)
8517 /* On displays with a mutable colormap, figure out the colors
8518 allocated for the image by looking at the pixels of an XImage for
8520 class = FRAME_X_VISUAL (f
)->class;
8521 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8527 /* Try to get an XImage for img->pixmep. */
8528 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8529 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8534 /* Initialize the color table. */
8535 init_color_table ();
8537 /* For each pixel of the image, look its color up in the
8538 color table. After having done so, the color table will
8539 contain an entry for each color used by the image. */
8540 for (y
= 0; y
< img
->height
; ++y
)
8541 for (x
= 0; x
< img
->width
; ++x
)
8543 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8544 lookup_pixel_color (f
, pixel
);
8547 /* Record colors in the image. Free color table and XImage. */
8548 #ifdef COLOR_TABLE_SUPPORT
8549 img
->colors
= colors_in_color_table (&img
->ncolors
);
8550 free_color_table ();
8552 XDestroyImage (ximg
);
8554 #if 0 /* This doesn't seem to be the case. If we free the colors
8555 here, we get a BadAccess later in x_clear_image when
8556 freeing the colors. */
8557 /* We have allocated colors once, but Ghostscript has also
8558 allocated colors on behalf of us. So, to get the
8559 reference counts right, free them once. */
8561 x_free_colors (f
, img
->colors
, img
->ncolors
);
8565 image_error ("Cannot get X image of `%s'; colors will not be freed",
8570 #endif /* HAVE_X_WINDOWS */
8572 /* Now that we have the pixmap, compute mask and transform the
8573 image if requested. */
8575 postprocess_image (f
, img
);
8579 #endif /* HAVE_GHOSTSCRIPT */
8582 /***********************************************************************
8584 ***********************************************************************/
8588 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8589 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8592 return valid_image_p (spec
) ? Qt
: Qnil
;
8596 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8601 if (valid_image_p (spec
))
8602 id
= lookup_image (SELECTED_FRAME (), spec
);
8605 return make_number (id
);
8608 #endif /* GLYPH_DEBUG != 0 */
8611 /***********************************************************************
8613 ***********************************************************************/
8616 /* Image types that rely on external libraries are loaded dynamically
8617 if the library is available. */
8618 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8619 define_image_type (image_type, init_lib_fn (libraries))
8621 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8622 define_image_type (image_type, 1)
8623 #endif /* HAVE_NTGUI */
8625 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8626 doc
: /* Initialize image library implementing image type TYPE.
8627 Return non-nil if TYPE is a supported image type.
8629 Image types pbm and xbm are prebuilt; other types are loaded here.
8630 Libraries to load are specified in alist LIBRARIES (usually, the value
8631 of `dynamic-library-alist', which see). */)
8632 (Lisp_Object type
, Lisp_Object libraries
)
8636 /* Don't try to reload the library. */
8637 tested
= Fassq (type
, Vimage_type_cache
);
8639 return XCDR (tested
);
8641 #if defined (HAVE_XPM) || defined (HAVE_NS)
8642 if (EQ (type
, Qxpm
))
8643 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8646 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8647 if (EQ (type
, Qjpeg
))
8648 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8651 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8652 if (EQ (type
, Qtiff
))
8653 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8656 #if defined (HAVE_GIF) || defined (HAVE_NS)
8657 if (EQ (type
, Qgif
))
8658 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8661 #if defined (HAVE_PNG) || defined (HAVE_NS)
8662 if (EQ (type
, Qpng
))
8663 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8666 #if defined (HAVE_RSVG)
8667 if (EQ (type
, Qsvg
))
8668 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8671 #if defined (HAVE_IMAGEMAGICK)
8672 if (EQ (type
, Qimagemagick
))
8674 return CHECK_LIB_AVAILABLE (&imagemagick_type
, init_imagemagick_functions
,
8679 #ifdef HAVE_GHOSTSCRIPT
8680 if (EQ (type
, Qpostscript
))
8681 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8684 /* If the type is not recognized, avoid testing it ever again. */
8685 CACHE_IMAGE_TYPE (type
, Qnil
);
8690 syms_of_image (void)
8692 /* Initialize this only once, since that's what we do with Vimage_types
8693 and they are supposed to be in sync. Initializing here gives correct
8694 operation on GNU/Linux of calling dump-emacs after loading some images. */
8697 /* Must be defined now becase we're going to update it below, while
8698 defining the supported image types. */
8699 DEFVAR_LISP ("image-types", Vimage_types
,
8700 doc
: /* List of potentially supported image types.
8701 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8702 To check whether it is really supported, use `image-type-available-p'. */);
8703 Vimage_types
= Qnil
;
8705 DEFVAR_LISP ("max-image-size", Vmax_image_size
,
8706 doc
: /* Maximum size of images.
8707 Emacs will not load an image into memory if its pixel width or
8708 pixel height exceeds this limit.
8710 If the value is an integer, it directly specifies the maximum
8711 image height and width, measured in pixels. If it is a floating
8712 point number, it specifies the maximum image height and width
8713 as a ratio to the frame height and width. If the value is
8714 non-numeric, there is no explicit limit on the size of images. */);
8715 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8717 Vimage_type_cache
= Qnil
;
8718 staticpro (&Vimage_type_cache
);
8720 Qpbm
= intern_c_string ("pbm");
8722 ADD_IMAGE_TYPE (Qpbm
);
8724 Qxbm
= intern_c_string ("xbm");
8726 ADD_IMAGE_TYPE (Qxbm
);
8728 define_image_type (&xbm_type
, 1);
8729 define_image_type (&pbm_type
, 1);
8731 Qcount
= intern_c_string ("count");
8732 staticpro (&Qcount
);
8733 Qextension_data
= intern_c_string ("extension-data");
8734 staticpro (&Qextension_data
);
8736 QCascent
= intern_c_string (":ascent");
8737 staticpro (&QCascent
);
8738 QCmargin
= intern_c_string (":margin");
8739 staticpro (&QCmargin
);
8740 QCrelief
= intern_c_string (":relief");
8741 staticpro (&QCrelief
);
8742 QCconversion
= intern_c_string (":conversion");
8743 staticpro (&QCconversion
);
8744 QCcolor_symbols
= intern_c_string (":color-symbols");
8745 staticpro (&QCcolor_symbols
);
8746 QCheuristic_mask
= intern_c_string (":heuristic-mask");
8747 staticpro (&QCheuristic_mask
);
8748 QCindex
= intern_c_string (":index");
8749 staticpro (&QCindex
);
8750 QCgeometry
= intern_c_string (":geometry");
8751 staticpro (&QCgeometry
);
8752 QCcrop
= intern_c_string (":crop");
8753 staticpro (&QCcrop
);
8754 QCrotation
= intern_c_string (":rotation");
8755 staticpro (&QCrotation
);
8756 QCmatrix
= intern_c_string (":matrix");
8757 staticpro (&QCmatrix
);
8758 QCcolor_adjustment
= intern_c_string (":color-adjustment");
8759 staticpro (&QCcolor_adjustment
);
8760 QCmask
= intern_c_string (":mask");
8761 staticpro (&QCmask
);
8763 Qlaplace
= intern_c_string ("laplace");
8764 staticpro (&Qlaplace
);
8765 Qemboss
= intern_c_string ("emboss");
8766 staticpro (&Qemboss
);
8767 Qedge_detection
= intern_c_string ("edge-detection");
8768 staticpro (&Qedge_detection
);
8769 Qheuristic
= intern_c_string ("heuristic");
8770 staticpro (&Qheuristic
);
8772 Qpostscript
= intern_c_string ("postscript");
8773 staticpro (&Qpostscript
);
8774 #ifdef HAVE_GHOSTSCRIPT
8775 ADD_IMAGE_TYPE (Qpostscript
);
8776 QCloader
= intern_c_string (":loader");
8777 staticpro (&QCloader
);
8778 QCbounding_box
= intern_c_string (":bounding-box");
8779 staticpro (&QCbounding_box
);
8780 QCpt_width
= intern_c_string (":pt-width");
8781 staticpro (&QCpt_width
);
8782 QCpt_height
= intern_c_string (":pt-height");
8783 staticpro (&QCpt_height
);
8784 #endif /* HAVE_GHOSTSCRIPT */
8787 Qlibpng_version
= intern_c_string ("libpng-version");
8788 staticpro (&Qlibpng_version
);
8789 Fset (Qlibpng_version
,
8791 make_number (PNG_LIBPNG_VER
)
8798 #if defined (HAVE_XPM) || defined (HAVE_NS)
8799 Qxpm
= intern_c_string ("xpm");
8801 ADD_IMAGE_TYPE (Qxpm
);
8804 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8805 Qjpeg
= intern_c_string ("jpeg");
8807 ADD_IMAGE_TYPE (Qjpeg
);
8810 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8811 Qtiff
= intern_c_string ("tiff");
8813 ADD_IMAGE_TYPE (Qtiff
);
8816 #if defined (HAVE_GIF) || defined (HAVE_NS)
8817 Qgif
= intern_c_string ("gif");
8819 ADD_IMAGE_TYPE (Qgif
);
8822 #if defined (HAVE_PNG) || defined (HAVE_NS)
8823 Qpng
= intern_c_string ("png");
8825 ADD_IMAGE_TYPE (Qpng
);
8828 #if defined (HAVE_IMAGEMAGICK)
8829 Qimagemagick
= intern_c_string ("imagemagick");
8830 staticpro (&Qimagemagick
);
8831 ADD_IMAGE_TYPE (Qimagemagick
);
8834 #if defined (HAVE_RSVG)
8835 Qsvg
= intern_c_string ("svg");
8837 ADD_IMAGE_TYPE (Qsvg
);
8839 /* Other libraries used directly by svg code. */
8840 Qgdk_pixbuf
= intern_c_string ("gdk-pixbuf");
8841 staticpro (&Qgdk_pixbuf
);
8842 Qglib
= intern_c_string ("glib");
8844 Qgobject
= intern_c_string ("gobject");
8845 staticpro (&Qgobject
);
8846 #endif /* HAVE_NTGUI */
8847 #endif /* HAVE_RSVG */
8849 defsubr (&Sinit_image_library
);
8850 #ifdef HAVE_IMAGEMAGICK
8851 defsubr (&Simagemagick_types
);
8853 defsubr (&Sclear_image_cache
);
8854 defsubr (&Simage_flush
);
8855 defsubr (&Simage_size
);
8856 defsubr (&Simage_mask_p
);
8857 defsubr (&Simage_metadata
);
8861 defsubr (&Slookup_image
);
8864 DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images
,
8865 doc
: /* Non-nil means always draw a cross over disabled images.
8866 Disabled images are those having a `:conversion disabled' property.
8867 A cross is always drawn on black & white displays. */);
8868 cross_disabled_images
= 0;
8870 DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path
,
8871 doc
: /* List of directories to search for window system bitmap files. */);
8872 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8874 DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay
,
8875 doc
: /* Maximum time after which images are removed from the cache.
8876 When an image has not been displayed this many seconds, Emacs
8877 automatically removes it from the image cache. If the cache contains
8878 a large number of images, the actual eviction time may be shorter.
8879 The value can also be nil, meaning the cache is never cleared.
8881 The function `clear-image-cache' disregards this variable. */);
8882 Vimage_cache_eviction_delay
= make_number (300);
8883 #ifdef HAVE_IMAGEMAGICK
8884 DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type
,
8885 doc
: /* Choose between ImageMagick render methods. */);