1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
31 /* This makes the fields of a Display accessible, in Xlib header files. */
33 #define XLIB_ILLEGAL_ACCESS
38 #include "dispextern.h"
39 #include "blockinput.h"
48 #include <sys/types.h>
51 #define COLOR_TABLE_SUPPORT 1
53 typedef struct x_bitmap_record Bitmap_Record
;
54 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
55 #define NO_PIXMAP None
57 #define RGB_PIXEL_COLOR unsigned long
59 #define PIX_MASK_RETAIN 0
60 #define PIX_MASK_DRAW 1
61 #endif /* HAVE_X_WINDOWS */
67 /* W32_TODO : Color tables on W32. */
68 #undef COLOR_TABLE_SUPPORT
70 typedef struct w32_bitmap_record Bitmap_Record
;
71 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
74 #define RGB_PIXEL_COLOR COLORREF
76 #define PIX_MASK_RETAIN 0
77 #define PIX_MASK_DRAW 1
79 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
80 #define x_defined_color w32_defined_color
81 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
82 #endif /* HAVE_NTGUI */
90 #include <sys/param.h>
92 #if TARGET_API_MAC_CARBON
94 #include <QuickTime/QuickTime.h>
95 #else /* not MAC_OSX */
96 #include <QuickTime.h>
97 #endif /* not MAC_OSX */
98 #else /* not TARGET_API_MAC_CARBON */
101 #include <TextUtils.h>
102 #include <ImageCompression.h>
103 #include <QuickTimeComponents.h>
104 #endif /* not TARGET_API_MAC_CARBON */
106 /* MAC_TODO : Color tables on Mac. */
107 #undef COLOR_TABLE_SUPPORT
109 #define ZPixmap 0 /* arbitrary */
110 typedef struct mac_bitmap_record Bitmap_Record
;
112 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
115 #define RGB_PIXEL_COLOR unsigned long
117 /* A black pixel in a mask bitmap/pixmap means ``draw a source
118 pixel''. A white pixel means ``retain the current pixel''. */
119 #define PIX_MASK_DRAW RGB_TO_ULONG(0,0,0)
120 #define PIX_MASK_RETAIN RGB_TO_ULONG(255,255,255)
122 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
123 #define x_defined_color mac_defined_color
124 #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes)
129 /* Search path for bitmap files. */
131 Lisp_Object Vx_bitmap_file_path
;
134 static void x_disable_image
P_ ((struct frame
*, struct image
*));
135 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
138 static void init_color_table
P_ ((void));
139 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
140 #ifdef COLOR_TABLE_SUPPORT
141 static void free_color_table
P_ ((void));
142 static unsigned long *colors_in_color_table
P_ ((int *n
));
143 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
146 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
147 id, which is just an int that this section returns. Bitmaps are
148 reference counted so they can be shared among frames.
150 Bitmap indices are guaranteed to be > 0, so a negative number can
151 be used to indicate no bitmap.
153 If you use x_create_bitmap_from_data, then you must keep track of
154 the bitmaps yourself. That is, creating a bitmap from the same
155 data more than once will not be caught. */
160 XGetImage (display
, pixmap
, x
, y
, width
, height
, plane_mask
, format
)
161 Display
*display
; /* not used */
163 int x
, y
; /* not used */
164 unsigned int width
, height
; /* not used */
165 unsigned long plane_mask
; /* not used */
166 int format
; /* not used */
169 xassert (x
== 0 && y
== 0);
172 SetRect (&ri
, 0, 0, width
, height
);
173 xassert (EqualRect (&ri
, GetPixBounds (GetGWorldPixMap (pixmap
), &rp
)));
175 xassert (! (pixelsLocked
& GetPixelsState (GetGWorldPixMap (pixmap
))));
178 LockPixels (GetGWorldPixMap (pixmap
));
184 XPutPixel (ximage
, x
, y
, pixel
)
189 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
190 short depth
= GetPixDepth (pixmap
);
192 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
195 char *base_addr
= GetPixBaseAddr (pixmap
);
196 short row_bytes
= GetPixRowBytes (pixmap
);
198 ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] = 0xff000000 | pixel
;
204 char *base_addr
= GetPixBaseAddr (pixmap
);
205 short row_bytes
= GetPixRowBytes (pixmap
);
207 if (pixel
== PIX_MASK_DRAW
)
208 base_addr
[y
* row_bytes
+ x
/ 8] |= (1 << 7) >> (x
& 7);
210 base_addr
[y
* row_bytes
+ x
/ 8] &= ~((1 << 7) >> (x
& 7));
218 GetGWorld (&old_port
, &old_gdh
);
219 SetGWorld (ximage
, NULL
);
221 color
.red
= RED16_FROM_ULONG (pixel
);
222 color
.green
= GREEN16_FROM_ULONG (pixel
);
223 color
.blue
= BLUE16_FROM_ULONG (pixel
);
225 SetCPixel (x
, y
, &color
);
227 SetGWorld (old_port
, old_gdh
);
232 XGetPixel (ximage
, x
, y
)
236 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
237 short depth
= GetPixDepth (pixmap
);
239 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
242 char *base_addr
= GetPixBaseAddr (pixmap
);
243 short row_bytes
= GetPixRowBytes (pixmap
);
245 return ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] & 0x00ffffff;
251 char *base_addr
= GetPixBaseAddr (pixmap
);
252 short row_bytes
= GetPixRowBytes (pixmap
);
254 if (base_addr
[y
* row_bytes
+ x
/ 8] & (1 << (~x
& 7)))
255 return PIX_MASK_DRAW
;
257 return PIX_MASK_RETAIN
;
265 GetGWorld (&old_port
, &old_gdh
);
266 SetGWorld (ximage
, NULL
);
268 GetCPixel (x
, y
, &color
);
270 SetGWorld (old_port
, old_gdh
);
271 return RGB_TO_ULONG (color
.red
>> 8, color
.green
>> 8, color
.blue
>> 8);
279 UnlockPixels (GetGWorldPixMap (ximg
));
284 mac_create_cg_image_from_image (f
, img
)
289 CGImageRef result
= NULL
;
296 mask
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
297 img
->width
, img
->height
, 1);
304 GetGWorld (&old_port
, &old_gdh
);
305 SetGWorld (mask
, NULL
);
306 BackColor (blackColor
); /* Don't mask. */
307 SetRect (&r
, 0, 0, img
->width
, img
->height
);
309 SetGWorld (old_port
, old_gdh
);
314 CreateCGImageFromPixMaps (GetGWorldPixMap (img
->pixmap
),
315 GetGWorldPixMap (mask
), &result
);
316 if (mask
!= img
->mask
)
317 XFreePixmap (FRAME_X_DISPLAY (f
), mask
);
323 #endif /* USE_CG_DRAWING */
327 /* Functions to access the contents of a bitmap, given an id. */
330 x_bitmap_height (f
, id
)
334 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
338 x_bitmap_width (f
, id
)
342 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
345 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
347 x_bitmap_pixmap (f
, id
)
351 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
355 #ifdef HAVE_X_WINDOWS
357 x_bitmap_mask (f
, id
)
361 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
365 /* Allocate a new bitmap record. Returns index of new record. */
368 x_allocate_bitmap_record (f
)
371 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
374 if (dpyinfo
->bitmaps
== NULL
)
376 dpyinfo
->bitmaps_size
= 10;
378 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
379 dpyinfo
->bitmaps_last
= 1;
383 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
384 return ++dpyinfo
->bitmaps_last
;
386 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
387 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
390 dpyinfo
->bitmaps_size
*= 2;
392 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
393 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
394 return ++dpyinfo
->bitmaps_last
;
397 /* Add one reference to the reference count of the bitmap with id ID. */
400 x_reference_bitmap (f
, id
)
404 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
407 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
410 x_create_bitmap_from_data (f
, bits
, width
, height
)
413 unsigned int width
, height
;
415 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
418 #ifdef HAVE_X_WINDOWS
420 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
421 bits
, width
, height
);
424 #endif /* HAVE_X_WINDOWS */
428 bitmap
= CreateBitmap (width
, height
,
429 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
430 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
434 #endif /* HAVE_NTGUI */
437 /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */
442 id
= x_allocate_bitmap_record (f
);
444 dpyinfo
->bitmaps
[id
- 1].bitmap_data
= (char *) xmalloc (height
* width
);
445 bcopy (bits
, dpyinfo
->bitmaps
[id
- 1].bitmap_data
, height
* width
);
448 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
449 dpyinfo
->bitmaps
[id
- 1].height
= height
;
450 dpyinfo
->bitmaps
[id
- 1].width
= width
;
451 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
453 #ifdef HAVE_X_WINDOWS
454 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
455 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
456 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
457 #endif /* HAVE_X_WINDOWS */
460 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
461 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
462 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
463 #endif /* HAVE_NTGUI */
468 /* Create bitmap from file FILE for frame F. */
471 x_create_bitmap_from_file (f
, file
)
476 return -1; /* MAC_TODO : bitmap support */
480 return -1; /* W32_TODO : bitmap support */
481 #endif /* HAVE_NTGUI */
483 #ifdef HAVE_X_WINDOWS
484 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
485 unsigned int width
, height
;
487 int xhot
, yhot
, result
, id
;
492 /* Look for an existing bitmap with the same name. */
493 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
495 if (dpyinfo
->bitmaps
[id
].refcount
496 && dpyinfo
->bitmaps
[id
].file
497 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
499 ++dpyinfo
->bitmaps
[id
].refcount
;
504 /* Search bitmap-file-path for the file, if appropriate. */
505 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
510 filename
= (char *) SDATA (found
);
512 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
513 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
514 if (result
!= BitmapSuccess
)
517 id
= x_allocate_bitmap_record (f
);
518 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
519 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
520 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
521 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
522 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
523 dpyinfo
->bitmaps
[id
- 1].height
= height
;
524 dpyinfo
->bitmaps
[id
- 1].width
= width
;
525 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
528 #endif /* HAVE_X_WINDOWS */
534 Free_Bitmap_Record (dpyinfo
, bm
)
535 Display_Info
*dpyinfo
;
538 #ifdef HAVE_X_WINDOWS
539 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
541 XFreePixmap (dpyinfo
->display
, bm
->mask
);
542 #endif /* HAVE_X_WINDOWS */
545 DeleteObject (bm
->pixmap
);
546 #endif /* HAVE_NTGUI */
549 xfree (bm
->bitmap_data
); /* Added ++kfs */
550 bm
->bitmap_data
= NULL
;
560 /* Remove reference to bitmap with id number ID. */
563 x_destroy_bitmap (f
, id
)
567 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
571 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
573 if (--bm
->refcount
== 0)
576 Free_Bitmap_Record (dpyinfo
, bm
);
582 /* Free all the bitmaps for the display specified by DPYINFO. */
585 x_destroy_all_bitmaps (dpyinfo
)
586 Display_Info
*dpyinfo
;
589 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
591 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
592 if (bm
->refcount
> 0)
593 Free_Bitmap_Record (dpyinfo
, bm
);
595 dpyinfo
->bitmaps_last
= 0;
599 #ifdef HAVE_X_WINDOWS
601 /* Useful functions defined in the section
602 `Image type independent image structures' below. */
604 static unsigned long four_corners_best
P_ ((XImagePtr ximg
,
607 unsigned long height
));
609 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
610 int depth
, XImagePtr
*ximg
,
613 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
616 /* Create a mask of a bitmap. Note is this not a perfect mask.
617 It's nicer with some borders in this context */
620 x_create_bitmap_mask (f
, id
)
625 XImagePtr ximg
, mask_img
;
626 unsigned long width
, height
;
629 unsigned long x
, y
, xp
, xm
, yp
, ym
;
632 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
637 pixmap
= x_bitmap_pixmap (f
, id
);
638 width
= x_bitmap_width (f
, id
);
639 height
= x_bitmap_height (f
, id
);
642 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
651 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
656 XDestroyImage (ximg
);
660 bg
= four_corners_best (ximg
, NULL
, width
, height
);
662 for (y
= 0; y
< ximg
->height
; ++y
)
664 for (x
= 0; x
< ximg
->width
; ++x
)
666 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
667 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
668 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
669 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
670 if (XGetPixel (ximg
, x
, y
) == bg
671 && XGetPixel (ximg
, x
, yp
) == bg
672 && XGetPixel (ximg
, x
, ym
) == bg
673 && XGetPixel (ximg
, xp
, y
) == bg
674 && XGetPixel (ximg
, xp
, yp
) == bg
675 && XGetPixel (ximg
, xp
, ym
) == bg
676 && XGetPixel (ximg
, xm
, y
) == bg
677 && XGetPixel (ximg
, xm
, yp
) == bg
678 && XGetPixel (ximg
, xm
, ym
) == bg
)
679 XPutPixel (mask_img
, x
, y
, 0);
681 XPutPixel (mask_img
, x
, y
, 1);
685 xassert (interrupt_input_blocked
);
686 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
687 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
689 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
691 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
692 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
694 XDestroyImage (ximg
);
695 x_destroy_x_image (mask_img
);
700 #endif /* HAVE_X_WINDOWS */
703 /***********************************************************************
705 ***********************************************************************/
707 /* Value is the number of elements of vector VECTOR. */
709 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
711 /* List of supported image types. Use define_image_type to add new
712 types. Use lookup_image_type to find a type for a given symbol. */
714 static struct image_type
*image_types
;
716 /* A list of symbols, one for each supported image type. */
718 Lisp_Object Vimage_types
;
720 /* An alist of image types and libraries that implement the type. */
722 Lisp_Object Vimage_library_alist
;
724 /* Cache for delayed-loading image types. */
726 static Lisp_Object Vimage_type_cache
;
728 /* The symbol `xbm' which is used as the type symbol for XBM images. */
734 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
735 extern Lisp_Object QCdata
, QCtype
, Qcount
;
736 extern Lisp_Object Qcenter
;
737 Lisp_Object QCascent
, QCmargin
, QCrelief
;
738 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
739 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
743 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
745 /* Time in seconds after which images should be removed from the cache
748 Lisp_Object Vimage_cache_eviction_delay
;
750 /* Function prototypes. */
752 static Lisp_Object define_image_type
P_ ((struct image_type
*type
, int loaded
));
753 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
754 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
755 static void x_laplace
P_ ((struct frame
*, struct image
*));
756 static void x_emboss
P_ ((struct frame
*, struct image
*));
757 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
760 #define CACHE_IMAGE_TYPE(type, status) \
761 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
763 #define ADD_IMAGE_TYPE(type) \
764 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
766 /* Define a new image type from TYPE. This adds a copy of TYPE to
767 image_types and caches the loading status of TYPE. */
770 define_image_type (type
, loaded
)
771 struct image_type
*type
;
780 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
781 The initialized data segment is read-only. */
782 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
783 bcopy (type
, p
, sizeof *p
);
784 p
->next
= image_types
;
789 CACHE_IMAGE_TYPE (*type
->type
, success
);
794 /* Look up image type SYMBOL, and return a pointer to its image_type
795 structure. Value is null if SYMBOL is not a known image type. */
797 static INLINE
struct image_type
*
798 lookup_image_type (symbol
)
801 struct image_type
*type
;
803 /* We must initialize the image-type if it hasn't been already. */
804 if (NILP (Finit_image_library (symbol
, Vimage_library_alist
)))
805 return 0; /* unimplemented */
807 for (type
= image_types
; type
; type
= type
->next
)
808 if (EQ (symbol
, *type
->type
))
815 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
816 valid image specification is a list whose car is the symbol
817 `image', and whose rest is a property list. The property list must
818 contain a value for key `:type'. That value must be the name of a
819 supported image type. The rest of the property list depends on the
823 valid_image_p (object
)
832 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
833 if (EQ (XCAR (tem
), QCtype
))
836 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
838 struct image_type
*type
;
839 type
= lookup_image_type (XCAR (tem
));
841 valid_p
= type
->valid_p (object
);
852 /* Log error message with format string FORMAT and argument ARG.
853 Signaling an error, e.g. when an image cannot be loaded, is not a
854 good idea because this would interrupt redisplay, and the error
855 message display would lead to another redisplay. This function
856 therefore simply displays a message. */
859 image_error (format
, arg1
, arg2
)
861 Lisp_Object arg1
, arg2
;
863 add_to_log (format
, arg1
, arg2
);
868 /***********************************************************************
870 ***********************************************************************/
872 enum image_value_type
874 IMAGE_DONT_CHECK_VALUE_TYPE
,
876 IMAGE_STRING_OR_NIL_VALUE
,
878 IMAGE_POSITIVE_INTEGER_VALUE
,
879 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
880 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
883 IMAGE_FUNCTION_VALUE
,
888 /* Structure used when parsing image specifications. */
892 /* Name of keyword. */
895 /* The type of value allowed. */
896 enum image_value_type type
;
898 /* Non-zero means key must be present. */
901 /* Used to recognize duplicate keywords in a property list. */
904 /* The value that was found. */
909 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
911 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
914 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
915 has the format (image KEYWORD VALUE ...). One of the keyword/
916 value pairs must be `:type TYPE'. KEYWORDS is a vector of
917 image_keywords structures of size NKEYWORDS describing other
918 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
921 parse_image_spec (spec
, keywords
, nkeywords
, type
)
923 struct image_keyword
*keywords
;
934 while (CONSP (plist
))
936 Lisp_Object key
, value
;
938 /* First element of a pair must be a symbol. */
940 plist
= XCDR (plist
);
944 /* There must follow a value. */
947 value
= XCAR (plist
);
948 plist
= XCDR (plist
);
950 /* Find key in KEYWORDS. Error if not found. */
951 for (i
= 0; i
< nkeywords
; ++i
)
952 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
958 /* Record that we recognized the keyword. If a keywords
959 was found more than once, it's an error. */
960 keywords
[i
].value
= value
;
963 if (keywords
[i
].count
> 1)
966 /* Check type of value against allowed type. */
967 switch (keywords
[i
].type
)
969 case IMAGE_STRING_VALUE
:
970 if (!STRINGP (value
))
974 case IMAGE_STRING_OR_NIL_VALUE
:
975 if (!STRINGP (value
) && !NILP (value
))
979 case IMAGE_SYMBOL_VALUE
:
980 if (!SYMBOLP (value
))
984 case IMAGE_POSITIVE_INTEGER_VALUE
:
985 if (!INTEGERP (value
) || XINT (value
) <= 0)
989 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
990 if (INTEGERP (value
) && XINT (value
) >= 0)
993 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
994 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
998 case IMAGE_ASCENT_VALUE
:
999 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
1001 else if (INTEGERP (value
)
1002 && XINT (value
) >= 0
1003 && XINT (value
) <= 100)
1007 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
1008 if (!INTEGERP (value
) || XINT (value
) < 0)
1012 case IMAGE_DONT_CHECK_VALUE_TYPE
:
1015 case IMAGE_FUNCTION_VALUE
:
1016 value
= indirect_function (value
);
1018 || COMPILEDP (value
)
1019 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
1023 case IMAGE_NUMBER_VALUE
:
1024 if (!INTEGERP (value
) && !FLOATP (value
))
1028 case IMAGE_INTEGER_VALUE
:
1029 if (!INTEGERP (value
))
1033 case IMAGE_BOOL_VALUE
:
1034 if (!NILP (value
) && !EQ (value
, Qt
))
1043 if (EQ (key
, QCtype
) && !EQ (type
, value
))
1047 /* Check that all mandatory fields are present. */
1048 for (i
= 0; i
< nkeywords
; ++i
)
1049 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
1052 return NILP (plist
);
1056 /* Return the value of KEY in image specification SPEC. Value is nil
1057 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
1058 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
1061 image_spec_value (spec
, key
, found
)
1062 Lisp_Object spec
, key
;
1067 xassert (valid_image_p (spec
));
1069 for (tail
= XCDR (spec
);
1070 CONSP (tail
) && CONSP (XCDR (tail
));
1071 tail
= XCDR (XCDR (tail
)))
1073 if (EQ (XCAR (tail
), key
))
1077 return XCAR (XCDR (tail
));
1087 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
1088 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
1089 PIXELS non-nil means return the size in pixels, otherwise return the
1090 size in canonical character units.
1091 FRAME is the frame on which the image will be displayed. FRAME nil
1092 or omitted means use the selected frame. */)
1093 (spec
, pixels
, frame
)
1094 Lisp_Object spec
, pixels
, frame
;
1099 if (valid_image_p (spec
))
1101 struct frame
*f
= check_x_frame (frame
);
1102 int id
= lookup_image (f
, spec
);
1103 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1104 int width
= img
->width
+ 2 * img
->hmargin
;
1105 int height
= img
->height
+ 2 * img
->vmargin
;
1108 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
1109 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
1111 size
= Fcons (make_number (width
), make_number (height
));
1114 error ("Invalid image specification");
1120 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
1121 doc
: /* Return t if image SPEC has a mask bitmap.
1122 FRAME is the frame on which the image will be displayed. FRAME nil
1123 or omitted means use the selected frame. */)
1125 Lisp_Object spec
, frame
;
1130 if (valid_image_p (spec
))
1132 struct frame
*f
= check_x_frame (frame
);
1133 int id
= lookup_image (f
, spec
);
1134 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1139 error ("Invalid image specification");
1144 DEFUN ("image-extension-data", Fimage_extension_data
, Simage_extension_data
, 1, 2, 0,
1145 doc
: /* Return extension data for image SPEC.
1146 FRAME is the frame on which the image will be displayed. FRAME nil
1147 or omitted means use the selected frame. */)
1149 Lisp_Object spec
, frame
;
1154 if (valid_image_p (spec
))
1156 struct frame
*f
= check_x_frame (frame
);
1157 int id
= lookup_image (f
, spec
);
1158 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1159 ext
= img
->data
.lisp_val
;
1166 /***********************************************************************
1167 Image type independent image structures
1168 ***********************************************************************/
1170 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1171 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1172 static int check_image_size
P_ ((struct frame
*f
, int width
, int height
));
1174 #define MAX_IMAGE_SIZE 6.0
1175 Lisp_Object Vmax_image_size
;
1177 /* Allocate and return a new image structure for image specification
1178 SPEC. SPEC has a hash value of HASH. */
1180 static struct image
*
1181 make_image (spec
, hash
)
1185 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1187 xassert (valid_image_p (spec
));
1188 bzero (img
, sizeof *img
);
1189 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1190 xassert (img
->type
!= NULL
);
1192 img
->data
.lisp_val
= Qnil
;
1193 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1195 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1200 /* Free image IMG which was used on frame F, including its resources. */
1209 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1211 /* Remove IMG from the hash table of its cache. */
1213 img
->prev
->next
= img
->next
;
1215 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1218 img
->next
->prev
= img
->prev
;
1220 c
->images
[img
->id
] = NULL
;
1222 /* Free resources, then free IMG. */
1223 img
->type
->free (f
, img
);
1228 /* Return 1 if the given widths and heights are valid for display;
1229 otherwise, return 0. */
1232 check_image_size (f
, width
, height
)
1239 if (width
<= 0 || height
<= 0)
1242 if (INTEGERP (Vmax_image_size
))
1243 w
= h
= XINT (Vmax_image_size
);
1244 else if (FLOATP (Vmax_image_size
))
1248 w
= FRAME_PIXEL_WIDTH (f
);
1249 h
= FRAME_PIXEL_HEIGHT (f
);
1252 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1253 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1254 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1259 return (width
<= w
&& height
<= h
);
1262 /* Prepare image IMG for display on frame F. Must be called before
1263 drawing an image. */
1266 prepare_image_for_display (f
, img
)
1272 /* We're about to display IMG, so set its timestamp to `now'. */
1274 img
->timestamp
= EMACS_SECS (t
);
1276 /* If IMG doesn't have a pixmap yet, load it now, using the image
1277 type dependent loader function. */
1278 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1279 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1281 #if defined (MAC_OS) && USE_CG_DRAWING
1282 if (!img
->load_failed_p
&& img
->data
.ptr_val
== NULL
)
1284 img
->data
.ptr_val
= mac_create_cg_image_from_image (f
, img
);
1285 if (img
->data
.ptr_val
== NULL
)
1287 img
->load_failed_p
= 1;
1288 img
->type
->free (f
, img
);
1295 /* Value is the number of pixels for the ascent of image IMG when
1296 drawn in face FACE. */
1299 image_ascent (img
, face
, slice
)
1302 struct glyph_slice
*slice
;
1307 if (slice
->height
== img
->height
)
1308 height
= img
->height
+ img
->vmargin
;
1309 else if (slice
->y
== 0)
1310 height
= slice
->height
+ img
->vmargin
;
1312 height
= slice
->height
;
1314 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1319 /* W32 specific version. Why?. ++kfs */
1320 ascent
= height
/ 2 - (FONT_DESCENT(face
->font
)
1321 - FONT_BASE(face
->font
)) / 2;
1323 /* This expression is arranged so that if the image can't be
1324 exactly centered, it will be moved slightly up. This is
1325 because a typical font is `top-heavy' (due to the presence
1326 uppercase letters), so the image placement should err towards
1327 being top-heavy too. It also just generally looks better. */
1328 ascent
= (height
+ face
->font
->ascent
- face
->font
->descent
+ 1) / 2;
1329 #endif /* HAVE_NTGUI */
1332 ascent
= height
/ 2;
1335 ascent
= (int) (height
* img
->ascent
/ 100.0);
1341 /* Image background colors. */
1343 /* Find the "best" corner color of a bitmap.
1344 On W32, XIMG is assumed to a device context with the bitmap selected. */
1346 static RGB_PIXEL_COLOR
1347 four_corners_best (ximg
, corners
, width
, height
)
1348 XImagePtr_or_DC ximg
;
1350 unsigned long width
, height
;
1352 RGB_PIXEL_COLOR corner_pixels
[4], best
;
1355 if (corners
&& corners
[BOT_CORNER
] >= 0)
1357 /* Get the colors at the corner_pixels of ximg. */
1358 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1359 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1360 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1361 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1365 /* Get the colors at the corner_pixels of ximg. */
1366 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1367 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1368 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1369 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1371 /* Choose the most frequently found color as background. */
1372 for (i
= best_count
= 0; i
< 4; ++i
)
1376 for (j
= n
= 0; j
< 4; ++j
)
1377 if (corner_pixels
[i
] == corner_pixels
[j
])
1381 best
= corner_pixels
[i
], best_count
= n
;
1387 /* Portability macros */
1391 #define Destroy_Image(img_dc, prev) \
1392 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1394 #define Free_Pixmap(display, pixmap) \
1395 DeleteObject (pixmap)
1399 #define Destroy_Image(ximg, dummy) \
1400 XDestroyImage (ximg)
1402 #define Free_Pixmap(display, pixmap) \
1403 XFreePixmap (display, pixmap)
1405 #endif /* HAVE_NTGUI */
1408 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1409 it is guessed heuristically. If non-zero, XIMG is an existing
1410 XImage object (or device context with the image selected on W32) to
1411 use for the heuristic. */
1414 image_background (img
, f
, ximg
)
1417 XImagePtr_or_DC ximg
;
1419 if (! img
->background_valid
)
1420 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1422 int free_ximg
= !ximg
;
1425 #endif /* HAVE_NTGUI */
1430 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1431 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1433 HDC frame_dc
= get_frame_dc (f
);
1434 ximg
= CreateCompatibleDC (frame_dc
);
1435 release_frame_dc (f
, frame_dc
);
1436 prev
= SelectObject (ximg
, img
->pixmap
);
1437 #endif /* !HAVE_NTGUI */
1440 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1443 Destroy_Image (ximg
, prev
);
1445 img
->background_valid
= 1;
1448 return img
->background
;
1451 /* Return the `background_transparent' field of IMG. If IMG doesn't
1452 have one yet, it is guessed heuristically. If non-zero, MASK is an
1453 existing XImage object to use for the heuristic. */
1456 image_background_transparent (img
, f
, mask
)
1459 XImagePtr_or_DC mask
;
1461 if (! img
->background_transparent_valid
)
1462 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1466 int free_mask
= !mask
;
1469 #endif /* HAVE_NTGUI */
1474 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1475 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1477 HDC frame_dc
= get_frame_dc (f
);
1478 mask
= CreateCompatibleDC (frame_dc
);
1479 release_frame_dc (f
, frame_dc
);
1480 prev
= SelectObject (mask
, img
->mask
);
1481 #endif /* HAVE_NTGUI */
1484 img
->background_transparent
1485 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1488 Destroy_Image (mask
, prev
);
1491 img
->background_transparent
= 0;
1493 img
->background_transparent_valid
= 1;
1496 return img
->background_transparent
;
1500 /***********************************************************************
1501 Helper functions for X image types
1502 ***********************************************************************/
1504 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1506 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1507 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1509 Lisp_Object color_name
,
1510 unsigned long dflt
));
1513 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1514 free the pixmap if any. MASK_P non-zero means clear the mask
1515 pixmap if any. COLORS_P non-zero means free colors allocated for
1516 the image, if any. */
1519 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1522 int pixmap_p
, mask_p
, colors_p
;
1524 if (pixmap_p
&& img
->pixmap
)
1526 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1527 img
->pixmap
= NO_PIXMAP
;
1528 img
->background_valid
= 0;
1531 if (mask_p
&& img
->mask
)
1533 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1534 img
->mask
= NO_PIXMAP
;
1535 img
->background_transparent_valid
= 0;
1538 if (colors_p
&& img
->ncolors
)
1540 /* MAC_TODO: color table support. */
1541 /* W32_TODO: color table support. */
1542 #ifdef HAVE_X_WINDOWS
1543 x_free_colors (f
, img
->colors
, img
->ncolors
);
1544 #endif /* HAVE_X_WINDOWS */
1545 xfree (img
->colors
);
1550 #if defined (MAC_OS) && USE_CG_DRAWING
1551 if (img
->data
.ptr_val
)
1553 CGImageRelease (img
->data
.ptr_val
);
1554 img
->data
.ptr_val
= NULL
;
1559 /* Free X resources of image IMG which is used on frame F. */
1562 x_clear_image (f
, img
)
1567 x_clear_image_1 (f
, img
, 1, 1, 1);
1572 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1573 cannot be allocated, use DFLT. Add a newly allocated color to
1574 IMG->colors, so that it can be freed again. Value is the pixel
1577 static unsigned long
1578 x_alloc_image_color (f
, img
, color_name
, dflt
)
1581 Lisp_Object color_name
;
1585 unsigned long result
;
1587 xassert (STRINGP (color_name
));
1589 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1591 /* This isn't called frequently so we get away with simply
1592 reallocating the color vector to the needed size, here. */
1595 (unsigned long *) xrealloc (img
->colors
,
1596 img
->ncolors
* sizeof *img
->colors
);
1597 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1598 result
= color
.pixel
;
1608 /***********************************************************************
1610 ***********************************************************************/
1612 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1613 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1615 /* Return a new, initialized image cache that is allocated from the
1616 heap. Call free_image_cache to free an image cache. */
1618 struct image_cache
*
1621 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1624 bzero (c
, sizeof *c
);
1626 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1627 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1628 c
->buckets
= (struct image
**) xmalloc (size
);
1629 bzero (c
->buckets
, size
);
1634 /* Free image cache of frame F. Be aware that X frames share images
1638 free_image_cache (f
)
1641 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1646 /* Cache should not be referenced by any frame when freed. */
1647 xassert (c
->refcount
== 0);
1649 for (i
= 0; i
< c
->used
; ++i
)
1650 free_image (f
, c
->images
[i
]);
1654 FRAME_X_IMAGE_CACHE (f
) = NULL
;
1659 /* Clear image cache of frame F. FORCE_P non-zero means free all
1660 images. FORCE_P zero means clear only images that haven't been
1661 displayed for some time. Should be called from time to time to
1662 reduce the number of loaded images. If image-eviction-seconds is
1663 non-nil, this frees images in the cache which weren't displayed for
1664 at least that many seconds. */
1667 clear_image_cache (f
, force_p
)
1671 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1673 if (c
&& INTEGERP (Vimage_cache_eviction_delay
))
1680 old
= EMACS_SECS (t
) - XFASTINT (Vimage_cache_eviction_delay
);
1682 /* Block input so that we won't be interrupted by a SIGIO
1683 while being in an inconsistent state. */
1686 for (i
= nfreed
= 0; i
< c
->used
; ++i
)
1688 struct image
*img
= c
->images
[i
];
1690 && (force_p
|| img
->timestamp
< old
))
1692 free_image (f
, img
);
1697 /* We may be clearing the image cache because, for example,
1698 Emacs was iconified for a longer period of time. In that
1699 case, current matrices may still contain references to
1700 images freed above. So, clear these matrices. */
1703 Lisp_Object tail
, frame
;
1705 FOR_EACH_FRAME (tail
, frame
)
1707 struct frame
*f
= XFRAME (frame
);
1708 if (FRAME_WINDOW_P (f
)
1709 && FRAME_X_IMAGE_CACHE (f
) == c
)
1710 clear_current_matrices (f
);
1713 ++windows_or_buffers_changed
;
1721 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1723 doc
: /* Clear the image cache of FRAME.
1724 FRAME nil or omitted means use the selected frame.
1725 FRAME t means clear the image caches of all frames. */)
1733 FOR_EACH_FRAME (tail
, frame
)
1734 if (FRAME_WINDOW_P (XFRAME (frame
)))
1735 clear_image_cache (XFRAME (frame
), 1);
1738 clear_image_cache (check_x_frame (frame
), 1);
1744 /* Compute masks and transform image IMG on frame F, as specified
1745 by the image's specification, */
1748 postprocess_image (f
, img
)
1752 /* Manipulation of the image's mask. */
1755 Lisp_Object conversion
, spec
;
1760 /* `:heuristic-mask t'
1762 means build a mask heuristically.
1763 `:heuristic-mask (R G B)'
1764 `:mask (heuristic (R G B))'
1765 means build a mask from color (R G B) in the
1768 means remove a mask, if any. */
1770 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1772 x_build_heuristic_mask (f
, img
, mask
);
1777 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1779 if (EQ (mask
, Qheuristic
))
1780 x_build_heuristic_mask (f
, img
, Qt
);
1781 else if (CONSP (mask
)
1782 && EQ (XCAR (mask
), Qheuristic
))
1784 if (CONSP (XCDR (mask
)))
1785 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1787 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1789 else if (NILP (mask
) && found_p
&& img
->mask
)
1791 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1792 img
->mask
= NO_PIXMAP
;
1797 /* Should we apply an image transformation algorithm? */
1798 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1799 if (EQ (conversion
, Qdisabled
))
1800 x_disable_image (f
, img
);
1801 else if (EQ (conversion
, Qlaplace
))
1803 else if (EQ (conversion
, Qemboss
))
1805 else if (CONSP (conversion
)
1806 && EQ (XCAR (conversion
), Qedge_detection
))
1809 tem
= XCDR (conversion
);
1811 x_edge_detection (f
, img
,
1812 Fplist_get (tem
, QCmatrix
),
1813 Fplist_get (tem
, QCcolor_adjustment
));
1819 /* Return the id of image with Lisp specification SPEC on frame F.
1820 SPEC must be a valid Lisp image specification (see valid_image_p). */
1823 lookup_image (f
, spec
)
1827 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1831 struct gcpro gcpro1
;
1834 /* F must be a window-system frame, and SPEC must be a valid image
1836 xassert (FRAME_WINDOW_P (f
));
1837 xassert (valid_image_p (spec
));
1841 /* Look up SPEC in the hash table of the image cache. */
1842 hash
= sxhash (spec
, 0);
1843 i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1845 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1846 if (img
->hash
== hash
&& !NILP (Fequal (img
->spec
, spec
)))
1849 if (img
&& img
->load_failed_p
)
1851 free_image (f
, img
);
1855 /* If not found, create a new image and cache it. */
1858 extern Lisp_Object Qpostscript
;
1861 img
= make_image (spec
, hash
);
1862 cache_image (f
, img
);
1863 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1865 /* If we can't load the image, and we don't have a width and
1866 height, use some arbitrary width and height so that we can
1867 draw a rectangle for it. */
1868 if (img
->load_failed_p
)
1872 value
= image_spec_value (spec
, QCwidth
, NULL
);
1873 img
->width
= (INTEGERP (value
)
1874 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1875 value
= image_spec_value (spec
, QCheight
, NULL
);
1876 img
->height
= (INTEGERP (value
)
1877 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1881 /* Handle image type independent image attributes
1882 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1883 `:background COLOR'. */
1884 Lisp_Object ascent
, margin
, relief
, bg
;
1886 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1887 if (INTEGERP (ascent
))
1888 img
->ascent
= XFASTINT (ascent
);
1889 else if (EQ (ascent
, Qcenter
))
1890 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1892 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1893 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1894 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1895 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1896 && INTEGERP (XCDR (margin
)))
1898 if (XINT (XCAR (margin
)) > 0)
1899 img
->hmargin
= XFASTINT (XCAR (margin
));
1900 if (XINT (XCDR (margin
)) > 0)
1901 img
->vmargin
= XFASTINT (XCDR (margin
));
1904 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1905 if (INTEGERP (relief
))
1907 img
->relief
= XINT (relief
);
1908 img
->hmargin
+= abs (img
->relief
);
1909 img
->vmargin
+= abs (img
->relief
);
1912 if (! img
->background_valid
)
1914 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1918 = x_alloc_image_color (f
, img
, bg
,
1919 FRAME_BACKGROUND_PIXEL (f
));
1920 img
->background_valid
= 1;
1924 /* Do image transformations and compute masks, unless we
1925 don't have the image yet. */
1926 if (!EQ (*img
->type
->type
, Qpostscript
))
1927 postprocess_image (f
, img
);
1933 /* We're using IMG, so set its timestamp to `now'. */
1934 EMACS_GET_TIME (now
);
1935 img
->timestamp
= EMACS_SECS (now
);
1939 /* Value is the image id. */
1944 /* Cache image IMG in the image cache of frame F. */
1947 cache_image (f
, img
)
1951 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1954 /* Find a free slot in c->images. */
1955 for (i
= 0; i
< c
->used
; ++i
)
1956 if (c
->images
[i
] == NULL
)
1959 /* If no free slot found, maybe enlarge c->images. */
1960 if (i
== c
->used
&& c
->used
== c
->size
)
1963 c
->images
= (struct image
**) xrealloc (c
->images
,
1964 c
->size
* sizeof *c
->images
);
1967 /* Add IMG to c->images, and assign IMG an id. */
1973 /* Add IMG to the cache's hash table. */
1974 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1975 img
->next
= c
->buckets
[i
];
1977 img
->next
->prev
= img
;
1979 c
->buckets
[i
] = img
;
1983 /* Call FN on every image in the image cache of frame F. Used to mark
1984 Lisp Objects in the image cache. */
1987 forall_images_in_image_cache (f
, fn
)
1989 void (*fn
) P_ ((struct image
*img
));
1991 if (FRAME_LIVE_P (f
) && FRAME_WINDOW_P (f
))
1993 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1997 for (i
= 0; i
< c
->used
; ++i
)
2006 /***********************************************************************
2007 X / MAC / W32 support code
2008 ***********************************************************************/
2012 /* Macro for defining functions that will be loaded from image DLLs. */
2013 #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)()
2015 /* Macro for loading those image functions from the library. */
2016 #define LOAD_IMGLIB_FN(lib,func) { \
2017 fn_##func = (void *) GetProcAddress (lib, #func); \
2018 if (!fn_##func) return 0; \
2021 /* Load a DLL implementing an image type.
2022 The `image-library-alist' variable associates a symbol,
2023 identifying an image type, to a list of possible filenames.
2024 The function returns NULL if no library could be loaded for
2025 the given image type, or if the library was previously loaded;
2026 else the handle of the DLL. */
2028 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
2030 HMODULE library
= NULL
;
2032 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
2034 Lisp_Object dlls
= Fassq (type
, libraries
);
2037 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
2039 CHECK_STRING_CAR (dlls
);
2040 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
2048 #endif /* HAVE_NTGUI */
2050 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
2051 XImagePtr
*, Pixmap
*));
2052 static void x_destroy_x_image
P_ ((XImagePtr
));
2053 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
2056 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
2057 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
2058 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
2059 via xmalloc. Print error messages via image_error if an error
2060 occurs. Value is non-zero if successful.
2062 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
2063 should indicate the bit depth of the image. */
2066 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
2068 int width
, height
, depth
;
2072 #ifdef HAVE_X_WINDOWS
2073 Display
*display
= FRAME_X_DISPLAY (f
);
2074 Window window
= FRAME_X_WINDOW (f
);
2075 Screen
*screen
= FRAME_X_SCREEN (f
);
2077 xassert (interrupt_input_blocked
);
2080 depth
= DefaultDepthOfScreen (screen
);
2081 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
2082 depth
, ZPixmap
, 0, NULL
, width
, height
,
2083 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
2086 image_error ("Unable to allocate X image", Qnil
, Qnil
);
2090 /* Allocate image raster. */
2091 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
2093 /* Allocate a pixmap of the same size. */
2094 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2095 if (*pixmap
== NO_PIXMAP
)
2097 x_destroy_x_image (*ximg
);
2099 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2104 #endif /* HAVE_X_WINDOWS */
2108 BITMAPINFOHEADER
*header
;
2110 int scanline_width_bits
;
2112 int palette_colors
= 0;
2117 if (depth
!= 1 && depth
!= 4 && depth
!= 8
2118 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2120 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2124 scanline_width_bits
= width
* depth
;
2125 remainder
= scanline_width_bits
% 32;
2128 scanline_width_bits
+= 32 - remainder
;
2130 /* Bitmaps with a depth less than 16 need a palette. */
2131 /* BITMAPINFO structure already contains the first RGBQUAD. */
2133 palette_colors
= 1 << depth
- 1;
2135 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2138 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2142 header
= &((*ximg
)->info
.bmiHeader
);
2143 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
2144 header
->biSize
= sizeof (*header
);
2145 header
->biWidth
= width
;
2146 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2147 header
->biPlanes
= 1;
2148 header
->biBitCount
= depth
;
2149 header
->biCompression
= BI_RGB
;
2150 header
->biClrUsed
= palette_colors
;
2152 /* TODO: fill in palette. */
2155 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2156 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2157 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2158 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2159 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2160 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2161 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2162 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2165 hdc
= get_frame_dc (f
);
2167 /* Create a DIBSection and raster array for the bitmap,
2168 and store its handle in *pixmap. */
2169 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2170 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2171 /* casting avoids a GCC warning */
2172 (void **)&((*ximg
)->data
), NULL
, 0);
2174 /* Realize display palette and garbage all frames. */
2175 release_frame_dc (f
, hdc
);
2177 if (*pixmap
== NULL
)
2179 DWORD err
= GetLastError();
2180 Lisp_Object errcode
;
2181 /* All system errors are < 10000, so the following is safe. */
2182 XSETINT (errcode
, (int) err
);
2183 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2184 x_destroy_x_image (*ximg
);
2190 #endif /* HAVE_NTGUI */
2193 Display
*display
= FRAME_X_DISPLAY (f
);
2194 Window window
= FRAME_X_WINDOW (f
);
2196 xassert (interrupt_input_blocked
);
2198 /* Allocate a pixmap of the same size. */
2199 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2200 if (*pixmap
== NO_PIXMAP
)
2203 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2207 LockPixels (GetGWorldPixMap (*pixmap
));
2215 /* Destroy XImage XIMG. Free XIMG->data. */
2218 x_destroy_x_image (ximg
)
2221 xassert (interrupt_input_blocked
);
2224 #ifdef HAVE_X_WINDOWS
2227 XDestroyImage (ximg
);
2228 #endif /* HAVE_X_WINDOWS */
2230 /* Data will be freed by DestroyObject. */
2233 #endif /* HAVE_NTGUI */
2235 XDestroyImage (ximg
);
2241 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2242 are width and height of both the image and pixmap. */
2245 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
2251 #ifdef HAVE_X_WINDOWS
2254 xassert (interrupt_input_blocked
);
2255 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2256 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2257 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2258 #endif /* HAVE_X_WINDOWS */
2261 #if 0 /* I don't think this is necessary looking at where it is used. */
2262 HDC hdc
= get_frame_dc (f
);
2263 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2264 release_frame_dc (f
, hdc
);
2266 #endif /* HAVE_NTGUI */
2269 xassert (ximg
== pixmap
);
2274 /***********************************************************************
2276 ***********************************************************************/
2278 static unsigned char *slurp_file
P_ ((char *, int *));
2281 /* Find image file FILE. Look in data-directory, then
2282 x-bitmap-file-path. Value is the encoded full name of the file
2283 found, or nil if not found. */
2286 x_find_image_file (file
)
2289 Lisp_Object file_found
, search_path
;
2290 struct gcpro gcpro1
, gcpro2
;
2294 search_path
= Fcons (Vdata_directory
, Vx_bitmap_file_path
);
2295 GCPRO2 (file_found
, search_path
);
2297 /* Try to find FILE in data-directory, then x-bitmap-file-path. */
2298 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2304 file_found
= ENCODE_FILE (file_found
);
2313 /* Read FILE into memory. Value is a pointer to a buffer allocated
2314 with xmalloc holding FILE's contents. Value is null if an error
2315 occurred. *SIZE is set to the size of the file. */
2317 static unsigned char *
2318 slurp_file (file
, size
)
2323 unsigned char *buf
= NULL
;
2326 if (stat (file
, &st
) == 0
2327 && (fp
= fopen (file
, "rb")) != NULL
2328 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2329 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2352 /***********************************************************************
2353 MAC Image Load Functions
2354 ***********************************************************************/
2356 static int image_load_quicktime
P_ ((struct frame
*, struct image
*img
,
2359 static int image_load_quartz2d
P_ ((struct frame
*, struct image
*img
, int));
2363 find_image_fsspec (specified_file
, file
, fss
)
2364 Lisp_Object specified_file
, *file
;
2370 *file
= x_find_image_file (specified_file
);
2371 if (!STRINGP (*file
))
2372 return fnfErr
; /* file or directory not found;
2373 incomplete pathname */
2374 /* Try to open the image file. */
2375 err
= AECoercePtr (TYPE_FILE_NAME
, SDATA (*file
),
2376 SBYTES (*file
), typeFSS
, &desc
);
2379 #if TARGET_API_MAC_CARBON
2380 err
= AEGetDescData (&desc
, fss
, sizeof (FSSpec
));
2382 *fss
= *(FSSpec
*)(*(desc
.dataHandle
));
2384 AEDisposeDesc (&desc
);
2390 image_load_qt_1 (f
, img
, type
, fss
, dh
)
2397 ComponentResult err
;
2398 GraphicsImportComponent gi
;
2401 ImageDescriptionHandle desc_handle
;
2402 short draw_all_pixels
;
2403 Lisp_Object specified_bg
;
2408 err
= OpenADefaultComponent (GraphicsImporterComponentType
, type
, &gi
);
2411 image_error ("Cannot get importer component for `%s'", img
->spec
, Qnil
);
2416 /* read from file system spec */
2417 err
= GraphicsImportSetDataFile (gi
, fss
);
2420 image_error ("Cannot set fsspec to graphics importer for '%s'",
2427 /* read from data handle */
2428 err
= GraphicsImportSetDataHandle (gi
, dh
);
2431 image_error ("Cannot set data handle to graphics importer for `%s'",
2436 err
= GraphicsImportGetImageDescription (gi
, &desc_handle
);
2437 if (err
!= noErr
|| desc_handle
== NULL
)
2439 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2442 width
= img
->width
= (*desc_handle
)->width
;
2443 height
= img
->height
= (*desc_handle
)->height
;
2444 DisposeHandle ((Handle
)desc_handle
);
2446 if (!check_image_size (f
, width
, height
))
2448 image_error ("Invalid image size", Qnil
, Qnil
);
2452 err
= GraphicsImportDoesDrawAllPixels (gi
, &draw_all_pixels
);
2454 /* Don't check the error code here. It may have an undocumented
2458 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2462 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2464 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2465 if (!STRINGP (specified_bg
) ||
2466 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2468 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2469 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2470 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2471 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2475 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2477 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2482 GetGWorld (&old_port
, &old_gdh
);
2483 SetGWorld (ximg
, NULL
);
2484 bg_color
.red
= color
.red
;
2485 bg_color
.green
= color
.green
;
2486 bg_color
.blue
= color
.blue
;
2487 RGBBackColor (&bg_color
);
2488 #if TARGET_API_MAC_CARBON
2489 GetPortBounds (ximg
, &rect
);
2492 EraseRect (&(ximg
->portRect
));
2494 SetGWorld (old_port
, old_gdh
);
2496 GraphicsImportSetGWorld (gi
, ximg
, NULL
);
2497 GraphicsImportDraw (gi
);
2498 CloseComponent (gi
);
2500 /* Maybe fill in the background field while we have ximg handy. */
2501 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2502 IMAGE_BACKGROUND (img
, f
, ximg
);
2504 /* Put the image into the pixmap. */
2505 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2506 x_destroy_x_image (ximg
);
2510 CloseComponent (gi
);
2515 /* Load an image using the QuickTime Graphics Importer.
2516 Note: The alpha channel does not work for PNG images. */
2518 image_load_quicktime (f
, img
, type
)
2523 Lisp_Object specified_file
;
2524 Lisp_Object specified_data
;
2527 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2528 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2530 if (NILP (specified_data
))
2532 /* Read from a file */
2536 err
= find_image_fsspec (specified_file
, &file
, &fss
);
2540 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2542 image_error ("Cannot open `%s'", file
, Qnil
);
2545 return image_load_qt_1 (f
, img
, type
, &fss
, NULL
);
2549 /* Memory source! */
2553 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
2556 image_error ("Cannot allocate data handle for `%s'",
2560 success_p
= image_load_qt_1 (f
, img
, type
, NULL
, dh
);
2568 /* Load a PNG/JPEG image using Quartz 2D decoding routines.
2569 CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2.
2570 So don't use this function directly but determine at runtime
2571 whether it exists. */
2572 typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType
)
2573 (CGDataProviderRef
, const float [], bool, CGColorRenderingIntent
);
2574 static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider
;
2578 init_image_func_pointer ()
2580 if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider"))
2582 MyCGImageCreateWithPNGDataProvider
2583 = (CGImageCreateWithPNGDataProviderProcType
)
2584 NSAddressOfSymbol (NSLookupAndBindSymbol
2585 ("_CGImageCreateWithPNGDataProvider"));
2588 MyCGImageCreateWithPNGDataProvider
= NULL
;
2593 image_load_quartz2d (f
, img
, png_p
)
2598 Lisp_Object file
, specified_file
;
2599 Lisp_Object specified_data
, specified_bg
;
2600 struct gcpro gcpro1
;
2601 CGDataProviderRef source
;
2605 XImagePtr ximg
= NULL
;
2606 CGContextRef context
;
2609 /* Open the file. */
2610 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2611 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2616 if (NILP (specified_data
))
2621 file
= x_find_image_file (specified_file
);
2622 if (!STRINGP (file
))
2624 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2628 path
= cfstring_create_with_utf8_cstring (SDATA (file
));
2629 url
= CFURLCreateWithFileSystemPath (NULL
, path
,
2630 kCFURLPOSIXPathStyle
, 0);
2632 source
= CGDataProviderCreateWithURL (url
);
2636 source
= CGDataProviderCreateWithData (NULL
, SDATA (specified_data
),
2637 SBYTES (specified_data
), NULL
);
2640 image
= (*MyCGImageCreateWithPNGDataProvider
) (source
, NULL
, FALSE
,
2641 kCGRenderingIntentDefault
);
2643 image
= CGImageCreateWithJPEGDataProvider (source
, NULL
, FALSE
,
2644 kCGRenderingIntentDefault
);
2646 CGDataProviderRelease (source
);
2650 image_error ("Error reading image `%s'", img
->spec
, Qnil
);
2653 width
= img
->width
= CGImageGetWidth (image
);
2654 height
= img
->height
= CGImageGetHeight (image
);
2656 if (!check_image_size (f
, width
, height
))
2658 CGImageRelease (image
);
2660 image_error ("Invalid image size", Qnil
, Qnil
);
2666 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2667 if (!STRINGP (specified_bg
) ||
2668 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2670 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2671 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2672 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2673 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2677 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2679 CGImageRelease (image
);
2683 rectangle
= CGRectMake (0, 0, width
, height
);
2684 QDBeginCGContext (ximg
, &context
);
2687 CGContextSetRGBFillColor (context
, color
.red
/ 65535.0,
2688 color
.green
/ 65535.0,
2689 color
.blue
/ 65535.0, 1.0);
2690 CGContextFillRect (context
, rectangle
);
2692 CGContextDrawImage (context
, rectangle
, image
);
2693 QDEndCGContext (ximg
, &context
);
2694 CGImageRelease (image
);
2696 /* Maybe fill in the background field while we have ximg handy. */
2697 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2698 IMAGE_BACKGROUND (img
, f
, ximg
);
2700 /* Put the image into the pixmap. */
2701 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2702 x_destroy_x_image (ximg
);
2711 /***********************************************************************
2713 ***********************************************************************/
2715 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2716 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2717 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2718 unsigned char *, unsigned char *));
2719 static int xbm_image_p
P_ ((Lisp_Object object
));
2720 static int xbm_read_bitmap_data
P_ ((struct frame
*f
,
2721 unsigned char *, unsigned char *,
2722 int *, int *, unsigned char **));
2723 static int xbm_file_p
P_ ((Lisp_Object
));
2726 /* Indices of image specification fields in xbm_format, below. */
2728 enum xbm_keyword_index
2746 /* Vector of image_keyword structures describing the format
2747 of valid XBM image specifications. */
2749 static struct image_keyword xbm_format
[XBM_LAST
] =
2751 {":type", IMAGE_SYMBOL_VALUE
, 1},
2752 {":file", IMAGE_STRING_VALUE
, 0},
2753 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2754 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2755 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2756 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2757 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2758 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2759 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2760 {":relief", IMAGE_INTEGER_VALUE
, 0},
2761 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2762 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2763 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2766 /* Structure describing the image type XBM. */
2768 static struct image_type xbm_type
=
2777 /* Tokens returned from xbm_scan. */
2786 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2787 A valid specification is a list starting with the symbol `image'
2788 The rest of the list is a property list which must contain an
2791 If the specification specifies a file to load, it must contain
2792 an entry `:file FILENAME' where FILENAME is a string.
2794 If the specification is for a bitmap loaded from memory it must
2795 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2796 WIDTH and HEIGHT are integers > 0. DATA may be:
2798 1. a string large enough to hold the bitmap data, i.e. it must
2799 have a size >= (WIDTH + 7) / 8 * HEIGHT
2801 2. a bool-vector of size >= WIDTH * HEIGHT
2803 3. a vector of strings or bool-vectors, one for each line of the
2806 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
2807 may not be specified in this case because they are defined in the
2810 Both the file and data forms may contain the additional entries
2811 `:background COLOR' and `:foreground COLOR'. If not present,
2812 foreground and background of the frame on which the image is
2813 displayed is used. */
2816 xbm_image_p (object
)
2819 struct image_keyword kw
[XBM_LAST
];
2821 bcopy (xbm_format
, kw
, sizeof kw
);
2822 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2825 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2827 if (kw
[XBM_FILE
].count
)
2829 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2832 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2834 /* In-memory XBM file. */
2835 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2843 /* Entries for `:width', `:height' and `:data' must be present. */
2844 if (!kw
[XBM_WIDTH
].count
2845 || !kw
[XBM_HEIGHT
].count
2846 || !kw
[XBM_DATA
].count
)
2849 data
= kw
[XBM_DATA
].value
;
2850 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2851 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2853 /* Check type of data, and width and height against contents of
2859 /* Number of elements of the vector must be >= height. */
2860 if (XVECTOR (data
)->size
< height
)
2863 /* Each string or bool-vector in data must be large enough
2864 for one line of the image. */
2865 for (i
= 0; i
< height
; ++i
)
2867 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2872 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2875 else if (BOOL_VECTOR_P (elt
))
2877 if (XBOOL_VECTOR (elt
)->size
< width
)
2884 else if (STRINGP (data
))
2887 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2890 else if (BOOL_VECTOR_P (data
))
2892 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2903 /* Scan a bitmap file. FP is the stream to read from. Value is
2904 either an enumerator from enum xbm_token, or a character for a
2905 single-character token, or 0 at end of file. If scanning an
2906 identifier, store the lexeme of the identifier in SVAL. If
2907 scanning a number, store its value in *IVAL. */
2910 xbm_scan (s
, end
, sval
, ival
)
2911 unsigned char **s
, *end
;
2919 /* Skip white space. */
2920 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2925 else if (isdigit (c
))
2927 int value
= 0, digit
;
2929 if (c
== '0' && *s
< end
)
2932 if (c
== 'x' || c
== 'X')
2939 else if (c
>= 'a' && c
<= 'f')
2940 digit
= c
- 'a' + 10;
2941 else if (c
>= 'A' && c
<= 'F')
2942 digit
= c
- 'A' + 10;
2945 value
= 16 * value
+ digit
;
2948 else if (isdigit (c
))
2952 && (c
= *(*s
)++, isdigit (c
)))
2953 value
= 8 * value
+ c
- '0';
2960 && (c
= *(*s
)++, isdigit (c
)))
2961 value
= 10 * value
+ c
- '0';
2969 else if (isalpha (c
) || c
== '_')
2973 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2980 else if (c
== '/' && **s
== '*')
2982 /* C-style comment. */
2984 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2998 /* Create a Windows bitmap from X bitmap data. */
3000 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
3002 static unsigned char swap_nibble
[16]
3003 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
3004 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
3005 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
3006 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
3008 unsigned char *bits
, *p
;
3011 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
3012 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
3013 bits
= (unsigned char *) alloca (height
* w2
);
3014 bzero (bits
, height
* w2
);
3015 for (i
= 0; i
< height
; i
++)
3018 for (j
= 0; j
< w1
; j
++)
3020 /* Bitswap XBM bytes to match how Windows does things. */
3021 unsigned char c
= *data
++;
3022 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
3023 | (swap_nibble
[(c
>>4) & 0xf]));
3026 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
3031 static void convert_mono_to_color_image (f
, img
, foreground
, background
)
3034 COLORREF foreground
, background
;
3036 HDC hdc
, old_img_dc
, new_img_dc
;
3037 HGDIOBJ old_prev
, new_prev
;
3040 hdc
= get_frame_dc (f
);
3041 old_img_dc
= CreateCompatibleDC (hdc
);
3042 new_img_dc
= CreateCompatibleDC (hdc
);
3043 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
3044 release_frame_dc (f
, hdc
);
3045 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
3046 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
3047 SetTextColor (new_img_dc
, background
);
3048 SetBkColor (new_img_dc
, foreground
);
3050 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
3053 SelectObject (old_img_dc
, old_prev
);
3054 SelectObject (new_img_dc
, new_prev
);
3055 DeleteDC (old_img_dc
);
3056 DeleteDC (new_img_dc
);
3057 DeleteObject (img
->pixmap
);
3058 if (new_pixmap
== 0)
3059 fprintf (stderr
, "Failed to convert image to color.\n");
3061 img
->pixmap
= new_pixmap
;
3064 #define XBM_BIT_SHUFFLE(b) (~(b))
3068 #define XBM_BIT_SHUFFLE(b) (b)
3070 #endif /* HAVE_NTGUI */
3074 Create_Pixmap_From_Bitmap_Data(f
, img
, data
, fg
, bg
, non_default_colors
)
3078 RGB_PIXEL_COLOR fg
, bg
;
3079 int non_default_colors
;
3083 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
3085 /* If colors were specified, transfer the bitmap to a color one. */
3086 if (non_default_colors
)
3087 convert_mono_to_color_image (f
, img
, fg
, bg
);
3090 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
3093 img
->width
, img
->height
,
3095 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
3096 #endif /* HAVE_NTGUI */
3101 /* Replacement for XReadBitmapFileData which isn't available under old
3102 X versions. CONTENTS is a pointer to a buffer to parse; END is the
3103 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
3104 the image. Return in *DATA the bitmap data allocated with xmalloc.
3105 Value is non-zero if successful. DATA null means just test if
3106 CONTENTS looks like an in-memory XBM file. */
3109 xbm_read_bitmap_data (f
, contents
, end
, width
, height
, data
)
3111 unsigned char *contents
, *end
;
3112 int *width
, *height
;
3113 unsigned char **data
;
3115 unsigned char *s
= contents
;
3116 char buffer
[BUFSIZ
];
3119 int bytes_per_line
, i
, nbytes
;
3125 LA1 = xbm_scan (&s, end, buffer, &value)
3127 #define expect(TOKEN) \
3128 if (LA1 != (TOKEN)) \
3133 #define expect_ident(IDENT) \
3134 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
3139 *width
= *height
= -1;
3142 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
3144 /* Parse defines for width, height and hot-spots. */
3148 expect_ident ("define");
3149 expect (XBM_TK_IDENT
);
3151 if (LA1
== XBM_TK_NUMBER
)
3153 char *p
= strrchr (buffer
, '_');
3154 p
= p
? p
+ 1 : buffer
;
3155 if (strcmp (p
, "width") == 0)
3157 else if (strcmp (p
, "height") == 0)
3160 expect (XBM_TK_NUMBER
);
3163 if (!check_image_size (f
, *width
, *height
))
3165 else if (data
== NULL
)
3168 /* Parse bits. Must start with `static'. */
3169 expect_ident ("static");
3170 if (LA1
== XBM_TK_IDENT
)
3172 if (strcmp (buffer
, "unsigned") == 0)
3175 expect_ident ("char");
3177 else if (strcmp (buffer
, "short") == 0)
3181 if (*width
% 16 && *width
% 16 < 9)
3184 else if (strcmp (buffer
, "char") == 0)
3192 expect (XBM_TK_IDENT
);
3198 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
3199 nbytes
= bytes_per_line
* *height
;
3200 p
= *data
= (unsigned char *) xmalloc (nbytes
);
3204 for (i
= 0; i
< nbytes
; i
+= 2)
3207 expect (XBM_TK_NUMBER
);
3209 *p
++ = XBM_BIT_SHUFFLE (val
);
3210 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
3211 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
3213 if (LA1
== ',' || LA1
== '}')
3221 for (i
= 0; i
< nbytes
; ++i
)
3224 expect (XBM_TK_NUMBER
);
3226 *p
++ = XBM_BIT_SHUFFLE (val
);
3228 if (LA1
== ',' || LA1
== '}')
3253 /* Load XBM image IMG which will be displayed on frame F from buffer
3254 CONTENTS. END is the end of the buffer. Value is non-zero if
3258 xbm_load_image (f
, img
, contents
, end
)
3261 unsigned char *contents
, *end
;
3264 unsigned char *data
;
3267 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
, &data
);
3270 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3271 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3272 int non_default_colors
= 0;
3275 xassert (img
->width
> 0 && img
->height
> 0);
3277 /* Get foreground and background colors, maybe allocate colors. */
3278 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
3281 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
3282 non_default_colors
= 1;
3284 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
3287 background
= x_alloc_image_color (f
, img
, value
, background
);
3288 img
->background
= background
;
3289 img
->background_valid
= 1;
3290 non_default_colors
= 1;
3293 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
3294 foreground
, background
,
3295 non_default_colors
);
3298 if (img
->pixmap
== NO_PIXMAP
)
3300 x_clear_image (f
, img
);
3301 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
3307 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3313 /* Value is non-zero if DATA looks like an in-memory XBM file. */
3320 return (STRINGP (data
)
3321 && xbm_read_bitmap_data (NULL
, SDATA (data
),
3328 /* Fill image IMG which is used on frame F with pixmap data. Value is
3329 non-zero if successful. */
3337 Lisp_Object file_name
;
3339 xassert (xbm_image_p (img
->spec
));
3341 /* If IMG->spec specifies a file name, create a non-file spec from it. */
3342 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
3343 if (STRINGP (file_name
))
3346 unsigned char *contents
;
3348 struct gcpro gcpro1
;
3350 file
= x_find_image_file (file_name
);
3352 if (!STRINGP (file
))
3354 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
3359 contents
= slurp_file (SDATA (file
), &size
);
3360 if (contents
== NULL
)
3362 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3367 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3372 struct image_keyword fmt
[XBM_LAST
];
3374 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3375 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3376 int non_default_colors
= 0;
3379 int in_memory_file_p
= 0;
3381 /* See if data looks like an in-memory XBM file. */
3382 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3383 in_memory_file_p
= xbm_file_p (data
);
3385 /* Parse the image specification. */
3386 bcopy (xbm_format
, fmt
, sizeof fmt
);
3387 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3390 /* Get specified width, and height. */
3391 if (!in_memory_file_p
)
3393 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3394 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3395 xassert (img
->width
> 0 && img
->height
> 0);
3398 /* Get foreground and background colors, maybe allocate colors. */
3399 if (fmt
[XBM_FOREGROUND
].count
3400 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3402 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3404 non_default_colors
= 1;
3407 if (fmt
[XBM_BACKGROUND
].count
3408 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3410 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3412 non_default_colors
= 1;
3415 if (in_memory_file_p
)
3416 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3425 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3427 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3428 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3430 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3432 bcopy (SDATA (line
), p
, nbytes
);
3434 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3437 else if (STRINGP (data
))
3438 bits
= SDATA (data
);
3440 bits
= XBOOL_VECTOR (data
)->data
;
3442 /* Create the pixmap. */
3444 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3445 foreground
, background
,
3446 non_default_colors
);
3451 image_error ("Unable to create pixmap for XBM image `%s'",
3453 x_clear_image (f
, img
);
3463 /***********************************************************************
3465 ***********************************************************************/
3467 #if defined (HAVE_XPM) || defined (MAC_OS)
3469 static int xpm_image_p
P_ ((Lisp_Object object
));
3470 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3471 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3473 #endif /* HAVE_XPM || MAC_OS */
3477 /* Indicate to xpm.h that we don't have Xlib. */
3479 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3480 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3481 #define XColor xpm_XColor
3482 #define XImage xpm_XImage
3483 #define Display xpm_Display
3484 #define PIXEL_ALREADY_TYPEDEFED
3485 #include "X11/xpm.h"
3490 #undef PIXEL_ALREADY_TYPEDEFED
3492 #include "X11/xpm.h"
3493 #endif /* HAVE_NTGUI */
3494 #endif /* HAVE_XPM */
3496 #if defined (HAVE_XPM) || defined (MAC_OS)
3497 /* The symbol `xpm' identifying XPM-format images. */
3501 /* Indices of image specification fields in xpm_format, below. */
3503 enum xpm_keyword_index
3519 /* Vector of image_keyword structures describing the format
3520 of valid XPM image specifications. */
3522 static struct image_keyword xpm_format
[XPM_LAST
] =
3524 {":type", IMAGE_SYMBOL_VALUE
, 1},
3525 {":file", IMAGE_STRING_VALUE
, 0},
3526 {":data", IMAGE_STRING_VALUE
, 0},
3527 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3528 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3529 {":relief", IMAGE_INTEGER_VALUE
, 0},
3530 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3531 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3532 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3533 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3534 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3537 /* Structure describing the image type XPM. */
3539 static struct image_type xpm_type
=
3548 #ifdef HAVE_X_WINDOWS
3550 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3551 functions for allocating image colors. Our own functions handle
3552 color allocation failures more gracefully than the ones on the XPM
3555 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3556 #define ALLOC_XPM_COLORS
3558 #endif /* HAVE_X_WINDOWS */
3560 #ifdef ALLOC_XPM_COLORS
3562 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3563 static void xpm_free_color_cache
P_ ((void));
3564 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3565 static int xpm_color_bucket
P_ ((char *));
3566 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3569 /* An entry in a hash table used to cache color definitions of named
3570 colors. This cache is necessary to speed up XPM image loading in
3571 case we do color allocations ourselves. Without it, we would need
3572 a call to XParseColor per pixel in the image. */
3574 struct xpm_cached_color
3576 /* Next in collision chain. */
3577 struct xpm_cached_color
*next
;
3579 /* Color definition (RGB and pixel color). */
3586 /* The hash table used for the color cache, and its bucket vector
3589 #define XPM_COLOR_CACHE_BUCKETS 1001
3590 struct xpm_cached_color
**xpm_color_cache
;
3592 /* Initialize the color cache. */
3595 xpm_init_color_cache (f
, attrs
)
3597 XpmAttributes
*attrs
;
3599 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3600 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3601 memset (xpm_color_cache
, 0, nbytes
);
3602 init_color_table ();
3604 if (attrs
->valuemask
& XpmColorSymbols
)
3609 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3610 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3611 attrs
->colorsymbols
[i
].value
, &color
))
3613 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3615 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3620 /* Free the color cache. */
3623 xpm_free_color_cache ()
3625 struct xpm_cached_color
*p
, *next
;
3628 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3629 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3635 xfree (xpm_color_cache
);
3636 xpm_color_cache
= NULL
;
3637 free_color_table ();
3640 /* Return the bucket index for color named COLOR_NAME in the color
3644 xpm_color_bucket (color_name
)
3650 for (s
= color_name
; *s
; ++s
)
3652 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3656 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3657 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3660 static struct xpm_cached_color
*
3661 xpm_cache_color (f
, color_name
, color
, bucket
)
3668 struct xpm_cached_color
*p
;
3671 bucket
= xpm_color_bucket (color_name
);
3673 nbytes
= sizeof *p
+ strlen (color_name
);
3674 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3675 strcpy (p
->name
, color_name
);
3677 p
->next
= xpm_color_cache
[bucket
];
3678 xpm_color_cache
[bucket
] = p
;
3682 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3683 return the cached definition in *COLOR. Otherwise, make a new
3684 entry in the cache and allocate the color. Value is zero if color
3685 allocation failed. */
3688 xpm_lookup_color (f
, color_name
, color
)
3693 struct xpm_cached_color
*p
;
3694 int h
= xpm_color_bucket (color_name
);
3696 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3697 if (strcmp (p
->name
, color_name
) == 0)
3702 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3705 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3707 p
= xpm_cache_color (f
, color_name
, color
, h
);
3709 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3710 with transparency, and it's useful. */
3711 else if (strcmp ("opaque", color_name
) == 0)
3713 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3714 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3715 p
= xpm_cache_color (f
, color_name
, color
, h
);
3722 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3723 CLOSURE is a pointer to the frame on which we allocate the
3724 color. Return in *COLOR the allocated color. Value is non-zero
3728 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3735 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3739 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3740 is a pointer to the frame on which we allocate the color. Value is
3741 non-zero if successful. */
3744 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3754 #endif /* ALLOC_XPM_COLORS */
3759 /* XPM library details. */
3761 DEF_IMGLIB_FN (XpmFreeAttributes
);
3762 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3763 DEF_IMGLIB_FN (XpmReadFileToImage
);
3764 DEF_IMGLIB_FN (XImageFree
);
3767 init_xpm_functions (Lisp_Object libraries
)
3771 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3774 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3775 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3776 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3777 LOAD_IMGLIB_FN (library
, XImageFree
);
3781 #endif /* HAVE_NTGUI */
3784 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3785 for XPM images. Such a list must consist of conses whose car and
3789 xpm_valid_color_symbols_p (color_symbols
)
3790 Lisp_Object color_symbols
;
3792 while (CONSP (color_symbols
))
3794 Lisp_Object sym
= XCAR (color_symbols
);
3796 || !STRINGP (XCAR (sym
))
3797 || !STRINGP (XCDR (sym
)))
3799 color_symbols
= XCDR (color_symbols
);
3802 return NILP (color_symbols
);
3806 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3809 xpm_image_p (object
)
3812 struct image_keyword fmt
[XPM_LAST
];
3813 bcopy (xpm_format
, fmt
, sizeof fmt
);
3814 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3815 /* Either `:file' or `:data' must be present. */
3816 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3817 /* Either no `:color-symbols' or it's a list of conses
3818 whose car and cdr are strings. */
3819 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3820 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3823 #endif /* HAVE_XPM || MAC_OS */
3825 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3827 x_create_bitmap_from_xpm_data (f
, bits
)
3831 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3833 XpmAttributes attrs
;
3834 Pixmap bitmap
, mask
;
3836 bzero (&attrs
, sizeof attrs
);
3838 attrs
.visual
= FRAME_X_VISUAL (f
);
3839 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3840 attrs
.valuemask
|= XpmVisual
;
3841 attrs
.valuemask
|= XpmColormap
;
3843 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3844 bits
, &bitmap
, &mask
, &attrs
);
3845 if (rc
!= XpmSuccess
)
3847 XpmFreeAttributes (&attrs
);
3851 id
= x_allocate_bitmap_record (f
);
3852 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3853 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3854 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3855 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3856 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3857 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3858 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3859 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3861 XpmFreeAttributes (&attrs
);
3864 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3866 /* Load image IMG which will be displayed on frame F. Value is
3867 non-zero if successful. */
3877 XpmAttributes attrs
;
3878 Lisp_Object specified_file
, color_symbols
;
3881 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3882 #endif /* HAVE_NTGUI */
3884 /* Configure the XPM lib. Use the visual of frame F. Allocate
3885 close colors. Return colors allocated. */
3886 bzero (&attrs
, sizeof attrs
);
3889 attrs
.visual
= FRAME_X_VISUAL (f
);
3890 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3891 attrs
.valuemask
|= XpmVisual
;
3892 attrs
.valuemask
|= XpmColormap
;
3893 #endif /* HAVE_NTGUI */
3895 #ifdef ALLOC_XPM_COLORS
3896 /* Allocate colors with our own functions which handle
3897 failing color allocation more gracefully. */
3898 attrs
.color_closure
= f
;
3899 attrs
.alloc_color
= xpm_alloc_color
;
3900 attrs
.free_colors
= xpm_free_colors
;
3901 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3902 #else /* not ALLOC_XPM_COLORS */
3903 /* Let the XPM lib allocate colors. */
3904 attrs
.valuemask
|= XpmReturnAllocPixels
;
3905 #ifdef XpmAllocCloseColors
3906 attrs
.alloc_close_colors
= 1;
3907 attrs
.valuemask
|= XpmAllocCloseColors
;
3908 #else /* not XpmAllocCloseColors */
3909 attrs
.closeness
= 600;
3910 attrs
.valuemask
|= XpmCloseness
;
3911 #endif /* not XpmAllocCloseColors */
3912 #endif /* ALLOC_XPM_COLORS */
3914 /* If image specification contains symbolic color definitions, add
3915 these to `attrs'. */
3916 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3917 if (CONSP (color_symbols
))
3920 XpmColorSymbol
*xpm_syms
;
3923 attrs
.valuemask
|= XpmColorSymbols
;
3925 /* Count number of symbols. */
3926 attrs
.numsymbols
= 0;
3927 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3930 /* Allocate an XpmColorSymbol array. */
3931 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3932 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3933 bzero (xpm_syms
, size
);
3934 attrs
.colorsymbols
= xpm_syms
;
3936 /* Fill the color symbol array. */
3937 for (tail
= color_symbols
, i
= 0;
3939 ++i
, tail
= XCDR (tail
))
3941 Lisp_Object name
= XCAR (XCAR (tail
));
3942 Lisp_Object color
= XCDR (XCAR (tail
));
3943 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3944 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3945 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3946 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3950 /* Create a pixmap for the image, either from a file, or from a
3951 string buffer containing data in the same format as an XPM file. */
3952 #ifdef ALLOC_XPM_COLORS
3953 xpm_init_color_cache (f
, &attrs
);
3956 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3960 HDC frame_dc
= get_frame_dc (f
);
3961 hdc
= CreateCompatibleDC (frame_dc
);
3962 release_frame_dc (f
, frame_dc
);
3964 #endif /* HAVE_NTGUI */
3966 if (STRINGP (specified_file
))
3968 Lisp_Object file
= x_find_image_file (specified_file
);
3969 if (!STRINGP (file
))
3971 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3976 /* XpmReadFileToPixmap is not available in the Windows port of
3977 libxpm. But XpmReadFileToImage almost does what we want. */
3978 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3979 &xpm_image
, &xpm_mask
,
3982 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3983 SDATA (file
), &img
->pixmap
, &img
->mask
,
3985 #endif /* HAVE_NTGUI */
3989 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3991 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3992 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3993 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3994 &xpm_image
, &xpm_mask
,
3997 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3999 &img
->pixmap
, &img
->mask
,
4001 #endif /* HAVE_NTGUI */
4004 if (rc
== XpmSuccess
)
4006 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
4007 img
->colors
= colors_in_color_table (&img
->ncolors
);
4008 #else /* not ALLOC_XPM_COLORS */
4012 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
4013 plus some duplicate attributes. */
4014 if (xpm_image
&& xpm_image
->bitmap
)
4016 img
->pixmap
= xpm_image
->bitmap
;
4017 /* XImageFree in libXpm frees XImage struct without destroying
4018 the bitmap, which is what we want. */
4019 fn_XImageFree (xpm_image
);
4021 if (xpm_mask
&& xpm_mask
->bitmap
)
4023 /* The mask appears to be inverted compared with what we expect.
4024 TODO: invert our expectations. See other places where we
4025 have to invert bits because our idea of masks is backwards. */
4027 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
4029 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
4030 SelectObject (hdc
, old_obj
);
4032 img
->mask
= xpm_mask
->bitmap
;
4033 fn_XImageFree (xpm_mask
);
4038 #endif /* HAVE_NTGUI */
4040 /* Remember allocated colors. */
4041 img
->ncolors
= attrs
.nalloc_pixels
;
4042 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
4043 * sizeof *img
->colors
);
4044 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
4046 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
4047 #ifdef DEBUG_X_COLORS
4048 register_color (img
->colors
[i
]);
4051 #endif /* not ALLOC_XPM_COLORS */
4053 img
->width
= attrs
.width
;
4054 img
->height
= attrs
.height
;
4055 xassert (img
->width
> 0 && img
->height
> 0);
4057 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
4059 fn_XpmFreeAttributes (&attrs
);
4061 XpmFreeAttributes (&attrs
);
4062 #endif /* HAVE_NTGUI */
4068 #endif /* HAVE_NTGUI */
4073 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
4076 case XpmFileInvalid
:
4077 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4081 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4084 case XpmColorFailed
:
4085 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
4089 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
4094 #ifdef ALLOC_XPM_COLORS
4095 xpm_free_color_cache ();
4097 return rc
== XpmSuccess
;
4100 #endif /* HAVE_XPM */
4104 /* XPM support functions for Mac OS where libxpm is not available.
4105 Only XPM version 3 (without any extensions) is supported. */
4107 static int xpm_scan
P_ ((const unsigned char **, const unsigned char *,
4108 const unsigned char **, int *));
4109 static Lisp_Object xpm_make_color_table_v
4110 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4111 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4112 static void xpm_put_color_table_v
P_ ((Lisp_Object
, const unsigned char *,
4114 static Lisp_Object xpm_get_color_table_v
P_ ((Lisp_Object
,
4115 const unsigned char *, int));
4116 static Lisp_Object xpm_make_color_table_h
4117 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4118 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4119 static void xpm_put_color_table_h
P_ ((Lisp_Object
, const unsigned char *,
4121 static Lisp_Object xpm_get_color_table_h
P_ ((Lisp_Object
,
4122 const unsigned char *, int));
4123 static int xpm_str_to_color_key
P_ ((const char *));
4124 static int xpm_load_image
P_ ((struct frame
*, struct image
*,
4125 const unsigned char *, const unsigned char *));
4127 /* Tokens returned from xpm_scan. */
4136 /* Scan an XPM data and return a character (< 256) or a token defined
4137 by enum xpm_token above. *S and END are the start (inclusive) and
4138 the end (exclusive) addresses of the data, respectively. Advance
4139 *S while scanning. If token is either XPM_TK_IDENT or
4140 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
4141 length of the corresponding token, respectively. */
4144 xpm_scan (s
, end
, beg
, len
)
4145 const unsigned char **s
, *end
, **beg
;
4152 /* Skip white-space. */
4153 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4156 /* gnus-pointer.xpm uses '-' in its identifier.
4157 sb-dir-plus.xpm uses '+' in its identifier. */
4158 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
4162 (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
4165 return XPM_TK_IDENT
;
4170 while (*s
< end
&& **s
!= '"')
4175 return XPM_TK_STRING
;
4179 if (*s
< end
&& **s
== '*')
4181 /* C-style comment. */
4185 while (*s
< end
&& *(*s
)++ != '*')
4188 while (*s
< end
&& **s
!= '/');
4202 /* Functions for color table lookup in XPM data. A Key is a string
4203 specifying the color of each pixel in XPM data. A value is either
4204 an integer that specifies a pixel color, Qt that specifies
4205 transparency, or Qnil for the unspecified color. If the length of
4206 the key string is one, a vector is used as a table. Otherwise, a
4207 hash table is used. */
4210 xpm_make_color_table_v (put_func
, get_func
)
4211 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4212 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4214 *put_func
= xpm_put_color_table_v
;
4215 *get_func
= xpm_get_color_table_v
;
4216 return Fmake_vector (make_number (256), Qnil
);
4220 xpm_put_color_table_v (color_table
, chars_start
, chars_len
, color
)
4221 Lisp_Object color_table
;
4222 const unsigned char *chars_start
;
4226 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
4230 xpm_get_color_table_v (color_table
, chars_start
, chars_len
)
4231 Lisp_Object color_table
;
4232 const unsigned char *chars_start
;
4235 return XVECTOR (color_table
)->contents
[*chars_start
];
4239 xpm_make_color_table_h (put_func
, get_func
)
4240 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4241 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4243 *put_func
= xpm_put_color_table_h
;
4244 *get_func
= xpm_get_color_table_h
;
4245 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
4246 make_float (DEFAULT_REHASH_SIZE
),
4247 make_float (DEFAULT_REHASH_THRESHOLD
),
4252 xpm_put_color_table_h (color_table
, chars_start
, chars_len
, color
)
4253 Lisp_Object color_table
;
4254 const unsigned char *chars_start
;
4258 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4260 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
4262 hash_lookup (table
, chars
, &hash_code
);
4263 hash_put (table
, chars
, color
, hash_code
);
4267 xpm_get_color_table_h (color_table
, chars_start
, chars_len
)
4268 Lisp_Object color_table
;
4269 const unsigned char *chars_start
;
4272 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4273 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
4276 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
4279 enum xpm_color_key
{
4287 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
4290 xpm_str_to_color_key (s
)
4296 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
4298 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
4304 xpm_load_image (f
, img
, contents
, end
)
4307 const unsigned char *contents
, *end
;
4309 const unsigned char *s
= contents
, *beg
, *str
;
4310 unsigned char buffer
[BUFSIZ
];
4311 int width
, height
, x
, y
;
4312 int num_colors
, chars_per_pixel
;
4314 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4315 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
4316 Lisp_Object frame
, color_symbols
, color_table
;
4317 int best_key
, have_mask
= 0;
4318 XImagePtr ximg
= NULL
, mask_img
= NULL
;
4321 LA1 = xpm_scan (&s, end, &beg, &len)
4323 #define expect(TOKEN) \
4324 if (LA1 != (TOKEN)) \
4329 #define expect_ident(IDENT) \
4330 if (LA1 == XPM_TK_IDENT \
4331 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
4336 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
4340 expect_ident ("static");
4341 expect_ident ("char");
4343 expect (XPM_TK_IDENT
);
4348 expect (XPM_TK_STRING
);
4351 memcpy (buffer
, beg
, len
);
4353 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
4354 &num_colors
, &chars_per_pixel
) != 4
4355 || width
<= 0 || height
<= 0
4356 || num_colors
<= 0 || chars_per_pixel
<= 0)
4359 if (!check_image_size (f
, width
, height
))
4361 image_error ("Invalid image size", Qnil
, Qnil
);
4367 XSETFRAME (frame
, f
);
4368 if (!NILP (Fxw_display_color_p (frame
)))
4369 best_key
= XPM_COLOR_KEY_C
;
4370 else if (!NILP (Fx_display_grayscale_p (frame
)))
4371 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
4372 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
4374 best_key
= XPM_COLOR_KEY_M
;
4376 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
4377 if (chars_per_pixel
== 1)
4378 color_table
= xpm_make_color_table_v (&put_color_table
,
4381 color_table
= xpm_make_color_table_h (&put_color_table
,
4384 while (num_colors
-- > 0)
4386 unsigned char *color
, *max_color
;
4387 int key
, next_key
, max_key
= 0;
4388 Lisp_Object symbol_color
= Qnil
, color_val
;
4391 expect (XPM_TK_STRING
);
4392 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
4394 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
4395 buffer
[len
- chars_per_pixel
] = '\0';
4397 str
= strtok (buffer
, " \t");
4400 key
= xpm_str_to_color_key (str
);
4405 color
= strtok (NULL
, " \t");
4409 while ((str
= strtok (NULL
, " \t")) != NULL
)
4411 next_key
= xpm_str_to_color_key (str
);
4414 color
[strlen (color
)] = ' ';
4417 if (key
== XPM_COLOR_KEY_S
)
4419 if (NILP (symbol_color
))
4420 symbol_color
= build_string (color
);
4422 else if (max_key
< key
&& key
<= best_key
)
4432 if (!NILP (color_symbols
) && !NILP (symbol_color
))
4434 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
4436 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
4438 if (xstricmp (SDATA (XCDR (specified_color
)), "None") == 0)
4440 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
4442 color_val
= make_number (cdef
.pixel
);
4445 if (NILP (color_val
) && max_key
> 0)
4447 if (xstricmp (max_color
, "None") == 0)
4449 else if (x_defined_color (f
, max_color
, &cdef
, 0))
4450 color_val
= make_number (cdef
.pixel
);
4452 if (!NILP (color_val
))
4453 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
4458 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4459 &ximg
, &img
->pixmap
)
4460 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
4461 &mask_img
, &img
->mask
))
4463 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4467 for (y
= 0; y
< height
; y
++)
4469 expect (XPM_TK_STRING
);
4471 if (len
< width
* chars_per_pixel
)
4473 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
4475 Lisp_Object color_val
=
4476 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4478 XPutPixel (ximg
, x
, y
,
4479 (INTEGERP (color_val
) ? XINT (color_val
)
4480 : FRAME_FOREGROUND_PIXEL (f
)));
4481 XPutPixel (mask_img
, x
, y
,
4482 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4483 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4490 img
->height
= height
;
4492 /* Maybe fill in the background field while we have ximg handy. */
4493 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4494 IMAGE_BACKGROUND (img
, f
, ximg
);
4496 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4497 x_destroy_x_image (ximg
);
4500 /* Fill in the background_transparent field while we have the
4502 image_background_transparent (img
, f
, mask_img
);
4504 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4505 x_destroy_x_image (mask_img
);
4509 x_destroy_x_image (mask_img
);
4510 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4511 img
->mask
= NO_PIXMAP
;
4517 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4519 x_destroy_x_image (ximg
);
4520 x_destroy_x_image (mask_img
);
4521 x_clear_image (f
, img
);
4535 Lisp_Object file_name
;
4537 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4538 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4539 if (STRINGP (file_name
))
4542 unsigned char *contents
;
4544 struct gcpro gcpro1
;
4546 file
= x_find_image_file (file_name
);
4548 if (!STRINGP (file
))
4550 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4555 contents
= slurp_file (SDATA (file
), &size
);
4556 if (contents
== NULL
)
4558 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4563 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4571 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4572 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4573 SDATA (data
) + SBYTES (data
));
4583 /***********************************************************************
4585 ***********************************************************************/
4587 #ifdef COLOR_TABLE_SUPPORT
4589 /* An entry in the color table mapping an RGB color to a pixel color. */
4594 unsigned long pixel
;
4596 /* Next in color table collision list. */
4597 struct ct_color
*next
;
4600 /* The bucket vector size to use. Must be prime. */
4604 /* Value is a hash of the RGB color given by R, G, and B. */
4606 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4608 /* The color hash table. */
4610 struct ct_color
**ct_table
;
4612 /* Number of entries in the color table. */
4614 int ct_colors_allocated
;
4616 /* Initialize the color table. */
4621 int size
= CT_SIZE
* sizeof (*ct_table
);
4622 ct_table
= (struct ct_color
**) xmalloc (size
);
4623 bzero (ct_table
, size
);
4624 ct_colors_allocated
= 0;
4628 /* Free memory associated with the color table. */
4634 struct ct_color
*p
, *next
;
4636 for (i
= 0; i
< CT_SIZE
; ++i
)
4637 for (p
= ct_table
[i
]; p
; p
= next
)
4648 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4649 entry for that color already is in the color table, return the
4650 pixel color of that entry. Otherwise, allocate a new color for R,
4651 G, B, and make an entry in the color table. */
4653 static unsigned long
4654 lookup_rgb_color (f
, r
, g
, b
)
4658 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4659 int i
= hash
% CT_SIZE
;
4661 Display_Info
*dpyinfo
;
4663 /* Handle TrueColor visuals specially, which improves performance by
4664 two orders of magnitude. Freeing colors on TrueColor visuals is
4665 a nop, and pixel colors specify RGB values directly. See also
4666 the Xlib spec, chapter 3.1. */
4667 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4668 if (dpyinfo
->red_bits
> 0)
4670 unsigned long pr
, pg
, pb
;
4672 /* Apply gamma-correction like normal color allocation does. */
4676 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4677 gamma_correct (f
, &color
);
4678 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4681 /* Scale down RGB values to the visual's bits per RGB, and shift
4682 them to the right position in the pixel color. Note that the
4683 original RGB values are 16-bit values, as usual in X. */
4684 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4685 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4686 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4688 /* Assemble the pixel color. */
4689 return pr
| pg
| pb
;
4692 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4693 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4699 #ifdef HAVE_X_WINDOWS
4708 cmap
= FRAME_X_COLORMAP (f
);
4709 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4712 ++ct_colors_allocated
;
4713 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4717 p
->pixel
= color
.pixel
;
4718 p
->next
= ct_table
[i
];
4722 return FRAME_FOREGROUND_PIXEL (f
);
4727 color
= PALETTERGB (r
, g
, b
);
4729 color
= RGB_TO_ULONG (r
, g
, b
);
4730 #endif /* HAVE_NTGUI */
4731 ++ct_colors_allocated
;
4732 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4737 p
->next
= ct_table
[i
];
4739 #endif /* HAVE_X_WINDOWS */
4747 /* Look up pixel color PIXEL which is used on frame F in the color
4748 table. If not already present, allocate it. Value is PIXEL. */
4750 static unsigned long
4751 lookup_pixel_color (f
, pixel
)
4753 unsigned long pixel
;
4755 int i
= pixel
% CT_SIZE
;
4758 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4759 if (p
->pixel
== pixel
)
4768 #ifdef HAVE_X_WINDOWS
4769 cmap
= FRAME_X_COLORMAP (f
);
4770 color
.pixel
= pixel
;
4771 x_query_color (f
, &color
);
4772 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4775 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4776 color
.pixel
= pixel
;
4777 XQueryColor (NULL
, cmap
, &color
);
4778 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4780 #endif /* HAVE_X_WINDOWS */
4784 ++ct_colors_allocated
;
4786 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4791 p
->next
= ct_table
[i
];
4795 return FRAME_FOREGROUND_PIXEL (f
);
4801 /* Value is a vector of all pixel colors contained in the color table,
4802 allocated via xmalloc. Set *N to the number of colors. */
4804 static unsigned long *
4805 colors_in_color_table (n
)
4810 unsigned long *colors
;
4812 if (ct_colors_allocated
== 0)
4819 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4821 *n
= ct_colors_allocated
;
4823 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4824 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4825 colors
[j
++] = p
->pixel
;
4831 #else /* COLOR_TABLE_SUPPORT */
4833 static unsigned long
4834 lookup_rgb_color (f
, r
, g
, b
)
4838 unsigned long pixel
;
4841 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4842 gamma_correct (f
, &pixel
);
4846 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4847 #endif /* HAVE_NTGUI */
4856 #endif /* COLOR_TABLE_SUPPORT */
4859 /***********************************************************************
4861 ***********************************************************************/
4863 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4864 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4865 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4868 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4869 #endif /* HAVE_NTGUI */
4871 /* Non-zero means draw a cross on images having `:conversion
4874 int cross_disabled_images
;
4876 /* Edge detection matrices for different edge-detection
4879 static int emboss_matrix
[9] = {
4881 2, -1, 0, /* y - 1 */
4883 0, 1, -2 /* y + 1 */
4886 static int laplace_matrix
[9] = {
4888 1, 0, 0, /* y - 1 */
4890 0, 0, -1 /* y + 1 */
4893 /* Value is the intensity of the color whose red/green/blue values
4896 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4899 /* On frame F, return an array of XColor structures describing image
4900 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4901 non-zero means also fill the red/green/blue members of the XColor
4902 structures. Value is a pointer to the array of XColors structures,
4903 allocated with xmalloc; it must be freed by the caller. */
4906 x_to_xcolors (f
, img
, rgb_p
)
4913 XImagePtr_or_DC ximg
;
4917 #endif /* HAVE_NTGUI */
4919 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4922 /* Get the X image IMG->pixmap. */
4923 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4924 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4926 /* Load the image into a memory device context. */
4927 hdc
= get_frame_dc (f
);
4928 ximg
= CreateCompatibleDC (hdc
);
4929 release_frame_dc (f
, hdc
);
4930 prev
= SelectObject (ximg
, img
->pixmap
);
4931 #endif /* HAVE_NTGUI */
4933 /* Fill the `pixel' members of the XColor array. I wished there
4934 were an easy and portable way to circumvent XGetPixel. */
4936 for (y
= 0; y
< img
->height
; ++y
)
4940 #ifdef HAVE_X_WINDOWS
4941 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4942 p
->pixel
= XGetPixel (ximg
, x
, y
);
4944 x_query_colors (f
, row
, img
->width
);
4948 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4950 /* W32_TODO: palette support needed here? */
4951 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4955 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4956 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4957 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4960 p
->red
= 256 * GetRValue (p
->pixel
);
4961 p
->green
= 256 * GetGValue (p
->pixel
);
4962 p
->blue
= 256 * GetBValue (p
->pixel
);
4963 #endif /* HAVE_NTGUI */
4966 #endif /* HAVE_X_WINDOWS */
4969 Destroy_Image (ximg
, prev
);
4976 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4977 created with CreateDIBSection, with the pointer to the bit values
4978 stored in ximg->data. */
4980 static void XPutPixel (ximg
, x
, y
, color
)
4985 int width
= ximg
->info
.bmiHeader
.biWidth
;
4986 int height
= ximg
->info
.bmiHeader
.biHeight
;
4987 unsigned char * pixel
;
4989 /* True color images. */
4990 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4992 int rowbytes
= width
* 3;
4993 /* Ensure scanlines are aligned on 4 byte boundaries. */
4995 rowbytes
+= 4 - (rowbytes
% 4);
4997 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4998 /* Windows bitmaps are in BGR order. */
4999 *pixel
= GetBValue (color
);
5000 *(pixel
+ 1) = GetGValue (color
);
5001 *(pixel
+ 2) = GetRValue (color
);
5003 /* Monochrome images. */
5004 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
5006 int rowbytes
= width
/ 8;
5007 /* Ensure scanlines are aligned on 4 byte boundaries. */
5009 rowbytes
+= 4 - (rowbytes
% 4);
5010 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
5011 /* Filter out palette info. */
5012 if (color
& 0x00ffffff)
5013 *pixel
= *pixel
| (1 << x
% 8);
5015 *pixel
= *pixel
& ~(1 << x
% 8);
5018 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
5021 #endif /* HAVE_NTGUI */
5023 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
5024 RGB members are set. F is the frame on which this all happens.
5025 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
5028 x_from_xcolors (f
, img
, colors
)
5038 init_color_table ();
5040 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
5043 for (y
= 0; y
< img
->height
; ++y
)
5044 for (x
= 0; x
< img
->width
; ++x
, ++p
)
5046 unsigned long pixel
;
5047 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
5048 XPutPixel (oimg
, x
, y
, pixel
);
5052 x_clear_image_1 (f
, img
, 1, 0, 1);
5054 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
5055 x_destroy_x_image (oimg
);
5056 img
->pixmap
= pixmap
;
5057 #ifdef COLOR_TABLE_SUPPORT
5058 img
->colors
= colors_in_color_table (&img
->ncolors
);
5059 free_color_table ();
5060 #endif /* COLOR_TABLE_SUPPORT */
5064 /* On frame F, perform edge-detection on image IMG.
5066 MATRIX is a nine-element array specifying the transformation
5067 matrix. See emboss_matrix for an example.
5069 COLOR_ADJUST is a color adjustment added to each pixel of the
5073 x_detect_edges (f
, img
, matrix
, color_adjust
)
5076 int matrix
[9], color_adjust
;
5078 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5082 for (i
= sum
= 0; i
< 9; ++i
)
5083 sum
+= abs (matrix
[i
]);
5085 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
5087 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
5089 for (y
= 0; y
< img
->height
; ++y
)
5091 p
= COLOR (new, 0, y
);
5092 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5093 p
= COLOR (new, img
->width
- 1, y
);
5094 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5097 for (x
= 1; x
< img
->width
- 1; ++x
)
5099 p
= COLOR (new, x
, 0);
5100 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5101 p
= COLOR (new, x
, img
->height
- 1);
5102 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5105 for (y
= 1; y
< img
->height
- 1; ++y
)
5107 p
= COLOR (new, 1, y
);
5109 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
5111 int r
, g
, b
, y1
, x1
;
5114 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
5115 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
5118 XColor
*t
= COLOR (colors
, x1
, y1
);
5119 r
+= matrix
[i
] * t
->red
;
5120 g
+= matrix
[i
] * t
->green
;
5121 b
+= matrix
[i
] * t
->blue
;
5124 r
= (r
/ sum
+ color_adjust
) & 0xffff;
5125 g
= (g
/ sum
+ color_adjust
) & 0xffff;
5126 b
= (b
/ sum
+ color_adjust
) & 0xffff;
5127 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
5132 x_from_xcolors (f
, img
, new);
5138 /* Perform the pre-defined `emboss' edge-detection on image IMG
5146 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
5150 /* Transform image IMG which is used on frame F with a Laplace
5151 edge-detection algorithm. The result is an image that can be used
5152 to draw disabled buttons, for example. */
5159 x_detect_edges (f
, img
, laplace_matrix
, 45000);
5163 /* Perform edge-detection on image IMG on frame F, with specified
5164 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
5166 MATRIX must be either
5168 - a list of at least 9 numbers in row-major form
5169 - a vector of at least 9 numbers
5171 COLOR_ADJUST nil means use a default; otherwise it must be a
5175 x_edge_detection (f
, img
, matrix
, color_adjust
)
5178 Lisp_Object matrix
, color_adjust
;
5186 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
5187 ++i
, matrix
= XCDR (matrix
))
5188 trans
[i
] = XFLOATINT (XCAR (matrix
));
5190 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
5192 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
5193 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
5196 if (NILP (color_adjust
))
5197 color_adjust
= make_number (0xffff / 2);
5199 if (i
== 9 && NUMBERP (color_adjust
))
5200 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
5204 /* Transform image IMG on frame F so that it looks disabled. */
5207 x_disable_image (f
, img
)
5211 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
5213 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
5215 int n_planes
= dpyinfo
->n_planes
;
5216 #endif /* HAVE_NTGUI */
5220 /* Color (or grayscale). Convert to gray, and equalize. Just
5221 drawing such images with a stipple can look very odd, so
5222 we're using this method instead. */
5223 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5225 const int h
= 15000;
5226 const int l
= 30000;
5228 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
5232 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
5233 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
5234 p
->red
= p
->green
= p
->blue
= i2
;
5237 x_from_xcolors (f
, img
, colors
);
5240 /* Draw a cross over the disabled image, if we must or if we
5242 if (n_planes
< 2 || cross_disabled_images
)
5245 Display
*dpy
= FRAME_X_DISPLAY (f
);
5249 #define MaskForeground(f) PIX_MASK_DRAW
5251 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
5254 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
5255 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
5256 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
5257 img
->width
- 1, img
->height
- 1);
5258 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
5264 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
5265 XSetForeground (dpy
, gc
, MaskForeground (f
));
5266 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
5267 img
->width
- 1, img
->height
- 1);
5268 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
5276 hdc
= get_frame_dc (f
);
5277 bmpdc
= CreateCompatibleDC (hdc
);
5278 release_frame_dc (f
, hdc
);
5280 prev
= SelectObject (bmpdc
, img
->pixmap
);
5282 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
5283 MoveToEx (bmpdc
, 0, 0, NULL
);
5284 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5285 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5286 LineTo (bmpdc
, img
->width
- 1, 0);
5290 SelectObject (bmpdc
, img
->mask
);
5291 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
5292 MoveToEx (bmpdc
, 0, 0, NULL
);
5293 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5294 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5295 LineTo (bmpdc
, img
->width
- 1, 0);
5297 SelectObject (bmpdc
, prev
);
5299 #endif /* HAVE_NTGUI */
5304 /* Build a mask for image IMG which is used on frame F. FILE is the
5305 name of an image file, for error messages. HOW determines how to
5306 determine the background color of IMG. If it is a list '(R G B)',
5307 with R, G, and B being integers >= 0, take that as the color of the
5308 background. Otherwise, determine the background color of IMG
5309 heuristically. Value is non-zero if successful. */
5312 x_build_heuristic_mask (f
, img
, how
)
5317 XImagePtr_or_DC ximg
;
5325 #endif /* HAVE_NTGUI */
5326 int x
, y
, rc
, use_img_background
;
5327 unsigned long bg
= 0;
5331 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
5332 img
->mask
= NO_PIXMAP
;
5333 img
->background_transparent_valid
= 0;
5337 /* Create an image and pixmap serving as mask. */
5338 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
5339 &mask_img
, &img
->mask
);
5343 /* Get the X image of IMG->pixmap. */
5344 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
5345 img
->width
, img
->height
,
5348 /* Create the bit array serving as mask. */
5349 row_width
= (img
->width
+ 7) / 8;
5350 mask_img
= xmalloc (row_width
* img
->height
);
5351 bzero (mask_img
, row_width
* img
->height
);
5353 /* Create a memory device context for IMG->pixmap. */
5354 frame_dc
= get_frame_dc (f
);
5355 ximg
= CreateCompatibleDC (frame_dc
);
5356 release_frame_dc (f
, frame_dc
);
5357 prev
= SelectObject (ximg
, img
->pixmap
);
5358 #endif /* HAVE_NTGUI */
5360 /* Determine the background color of ximg. If HOW is `(R G B)'
5361 take that as color. Otherwise, use the image's background color. */
5362 use_img_background
= 1;
5368 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
5370 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
5374 if (i
== 3 && NILP (how
))
5376 char color_name
[30];
5377 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
5380 0x00ffffff & /* Filter out palette info. */
5381 #endif /* HAVE_NTGUI */
5382 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
5383 use_img_background
= 0;
5387 if (use_img_background
)
5388 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
5390 /* Set all bits in mask_img to 1 whose color in ximg is different
5391 from the background color bg. */
5393 for (y
= 0; y
< img
->height
; ++y
)
5394 for (x
= 0; x
< img
->width
; ++x
)
5395 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
5396 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
5398 /* Fill in the background_transparent field while we have the mask handy. */
5399 image_background_transparent (img
, f
, mask_img
);
5401 /* Put mask_img into img->mask. */
5402 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5403 x_destroy_x_image (mask_img
);
5406 for (y
= 0; y
< img
->height
; ++y
)
5407 for (x
= 0; x
< img
->width
; ++x
)
5409 COLORREF p
= GetPixel (ximg
, x
, y
);
5411 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
5414 /* Create the mask image. */
5415 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
5417 /* Fill in the background_transparent field while we have the mask handy. */
5418 SelectObject (ximg
, img
->mask
);
5419 image_background_transparent (img
, f
, ximg
);
5421 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
5423 #endif /* HAVE_NTGUI */
5425 Destroy_Image (ximg
, prev
);
5431 /***********************************************************************
5432 PBM (mono, gray, color)
5433 ***********************************************************************/
5435 static int pbm_image_p
P_ ((Lisp_Object object
));
5436 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
5437 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
5439 /* The symbol `pbm' identifying images of this type. */
5443 /* Indices of image specification fields in gs_format, below. */
5445 enum pbm_keyword_index
5461 /* Vector of image_keyword structures describing the format
5462 of valid user-defined image specifications. */
5464 static struct image_keyword pbm_format
[PBM_LAST
] =
5466 {":type", IMAGE_SYMBOL_VALUE
, 1},
5467 {":file", IMAGE_STRING_VALUE
, 0},
5468 {":data", IMAGE_STRING_VALUE
, 0},
5469 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5470 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5471 {":relief", IMAGE_INTEGER_VALUE
, 0},
5472 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5473 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5474 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5475 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
5476 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5479 /* Structure describing the image type `pbm'. */
5481 static struct image_type pbm_type
=
5491 /* Return non-zero if OBJECT is a valid PBM image specification. */
5494 pbm_image_p (object
)
5497 struct image_keyword fmt
[PBM_LAST
];
5499 bcopy (pbm_format
, fmt
, sizeof fmt
);
5501 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5504 /* Must specify either :data or :file. */
5505 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5509 /* Scan a decimal number from *S and return it. Advance *S while
5510 reading the number. END is the end of the string. Value is -1 at
5514 pbm_scan_number (s
, end
)
5515 unsigned char **s
, *end
;
5517 int c
= 0, val
= -1;
5521 /* Skip white-space. */
5522 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5527 /* Skip comment to end of line. */
5528 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5531 else if (isdigit (c
))
5533 /* Read decimal number. */
5535 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5536 val
= 10 * val
+ c
- '0';
5548 #if 0 /* Unused. ++kfs */
5550 /* Read FILE into memory. Value is a pointer to a buffer allocated
5551 with xmalloc holding FILE's contents. Value is null if an error
5552 occurred. *SIZE is set to the size of the file. */
5555 pbm_read_file (file
, size
)
5563 if (stat (SDATA (file
), &st
) == 0
5564 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5565 && (buf
= (char *) xmalloc (st
.st_size
),
5566 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5585 #endif /* HAVE_NTGUI */
5587 /* Load PBM image IMG for use on frame F. */
5595 int width
, height
, max_color_idx
= 0;
5597 Lisp_Object file
, specified_file
;
5598 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5599 struct gcpro gcpro1
;
5600 unsigned char *contents
= NULL
;
5601 unsigned char *end
, *p
;
5604 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5608 if (STRINGP (specified_file
))
5610 file
= x_find_image_file (specified_file
);
5611 if (!STRINGP (file
))
5613 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5618 contents
= slurp_file (SDATA (file
), &size
);
5619 if (contents
== NULL
)
5621 image_error ("Error reading `%s'", file
, Qnil
);
5627 end
= contents
+ size
;
5632 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5634 end
= p
+ SBYTES (data
);
5637 /* Check magic number. */
5638 if (end
- p
< 2 || *p
++ != 'P')
5640 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5650 raw_p
= 0, type
= PBM_MONO
;
5654 raw_p
= 0, type
= PBM_GRAY
;
5658 raw_p
= 0, type
= PBM_COLOR
;
5662 raw_p
= 1, type
= PBM_MONO
;
5666 raw_p
= 1, type
= PBM_GRAY
;
5670 raw_p
= 1, type
= PBM_COLOR
;
5674 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5678 /* Read width, height, maximum color-component. Characters
5679 starting with `#' up to the end of a line are ignored. */
5680 width
= pbm_scan_number (&p
, end
);
5681 height
= pbm_scan_number (&p
, end
);
5683 if (type
!= PBM_MONO
)
5685 max_color_idx
= pbm_scan_number (&p
, end
);
5686 if (raw_p
&& max_color_idx
> 255)
5687 max_color_idx
= 255;
5690 if (!check_image_size (f
, width
, height
)
5691 || (type
!= PBM_MONO
&& max_color_idx
< 0))
5694 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5695 &ximg
, &img
->pixmap
))
5698 /* Initialize the color hash table. */
5699 init_color_table ();
5701 if (type
== PBM_MONO
)
5704 struct image_keyword fmt
[PBM_LAST
];
5705 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5706 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5708 /* Parse the image specification. */
5709 bcopy (pbm_format
, fmt
, sizeof fmt
);
5710 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5712 /* Get foreground and background colors, maybe allocate colors. */
5713 if (fmt
[PBM_FOREGROUND
].count
5714 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5715 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5716 if (fmt
[PBM_BACKGROUND
].count
5717 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5719 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5720 img
->background
= bg
;
5721 img
->background_valid
= 1;
5724 for (y
= 0; y
< height
; ++y
)
5725 for (x
= 0; x
< width
; ++x
)
5735 g
= pbm_scan_number (&p
, end
);
5737 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5743 && ((type
== PBM_GRAY
)
5744 ? (p
+ height
* width
> end
)
5745 : (p
+ 3 * height
* width
> end
)))
5747 x_destroy_x_image (ximg
);
5748 x_clear_image (f
, img
);
5749 image_error ("Invalid image size in image `%s'",
5754 for (y
= 0; y
< height
; ++y
)
5755 for (x
= 0; x
< width
; ++x
)
5759 if (type
== PBM_GRAY
)
5760 r
= g
= b
= raw_p
? *p
++ : pbm_scan_number (&p
, end
);
5769 r
= pbm_scan_number (&p
, end
);
5770 g
= pbm_scan_number (&p
, end
);
5771 b
= pbm_scan_number (&p
, end
);
5774 if (r
< 0 || g
< 0 || b
< 0)
5776 x_destroy_x_image (ximg
);
5777 image_error ("Invalid pixel value in image `%s'",
5782 /* RGB values are now in the range 0..max_color_idx.
5783 Scale this to the range 0..0xffff supported by X. */
5784 r
= (double) r
* 65535 / max_color_idx
;
5785 g
= (double) g
* 65535 / max_color_idx
;
5786 b
= (double) b
* 65535 / max_color_idx
;
5787 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5791 #ifdef COLOR_TABLE_SUPPORT
5792 /* Store in IMG->colors the colors allocated for the image, and
5793 free the color table. */
5794 img
->colors
= colors_in_color_table (&img
->ncolors
);
5795 free_color_table ();
5796 #endif /* COLOR_TABLE_SUPPORT */
5799 img
->height
= height
;
5801 /* Maybe fill in the background field while we have ximg handy. */
5803 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5804 /* Casting avoids a GCC warning. */
5805 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5807 /* Put the image into a pixmap. */
5808 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5809 x_destroy_x_image (ximg
);
5811 /* X and W32 versions did it here, MAC version above. ++kfs
5813 img->height = height; */
5821 /***********************************************************************
5823 ***********************************************************************/
5825 #if defined (HAVE_PNG) || defined (MAC_OS)
5827 /* Function prototypes. */
5829 static int png_image_p
P_ ((Lisp_Object object
));
5830 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
5832 /* The symbol `png' identifying images of this type. */
5836 /* Indices of image specification fields in png_format, below. */
5838 enum png_keyword_index
5853 /* Vector of image_keyword structures describing the format
5854 of valid user-defined image specifications. */
5856 static struct image_keyword png_format
[PNG_LAST
] =
5858 {":type", IMAGE_SYMBOL_VALUE
, 1},
5859 {":data", IMAGE_STRING_VALUE
, 0},
5860 {":file", IMAGE_STRING_VALUE
, 0},
5861 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5862 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5863 {":relief", IMAGE_INTEGER_VALUE
, 0},
5864 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5865 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5866 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5867 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5870 /* Structure describing the image type `png'. */
5872 static struct image_type png_type
=
5881 /* Return non-zero if OBJECT is a valid PNG image specification. */
5884 png_image_p (object
)
5887 struct image_keyword fmt
[PNG_LAST
];
5888 bcopy (png_format
, fmt
, sizeof fmt
);
5890 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5893 /* Must specify either the :data or :file keyword. */
5894 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5897 #endif /* HAVE_PNG || MAC_OS */
5902 #if defined HAVE_LIBPNG_PNG_H
5903 # include <libpng/png.h>
5909 /* PNG library details. */
5911 DEF_IMGLIB_FN (png_get_io_ptr
);
5912 DEF_IMGLIB_FN (png_check_sig
);
5913 DEF_IMGLIB_FN (png_create_read_struct
);
5914 DEF_IMGLIB_FN (png_create_info_struct
);
5915 DEF_IMGLIB_FN (png_destroy_read_struct
);
5916 DEF_IMGLIB_FN (png_set_read_fn
);
5917 DEF_IMGLIB_FN (png_set_sig_bytes
);
5918 DEF_IMGLIB_FN (png_read_info
);
5919 DEF_IMGLIB_FN (png_get_IHDR
);
5920 DEF_IMGLIB_FN (png_get_valid
);
5921 DEF_IMGLIB_FN (png_set_strip_16
);
5922 DEF_IMGLIB_FN (png_set_expand
);
5923 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5924 DEF_IMGLIB_FN (png_set_background
);
5925 DEF_IMGLIB_FN (png_get_bKGD
);
5926 DEF_IMGLIB_FN (png_read_update_info
);
5927 DEF_IMGLIB_FN (png_get_channels
);
5928 DEF_IMGLIB_FN (png_get_rowbytes
);
5929 DEF_IMGLIB_FN (png_read_image
);
5930 DEF_IMGLIB_FN (png_read_end
);
5931 DEF_IMGLIB_FN (png_error
);
5934 init_png_functions (Lisp_Object libraries
)
5938 /* Try loading libpng under probable names. */
5939 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5942 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5943 LOAD_IMGLIB_FN (library
, png_check_sig
);
5944 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5945 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5946 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5947 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5948 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5949 LOAD_IMGLIB_FN (library
, png_read_info
);
5950 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5951 LOAD_IMGLIB_FN (library
, png_get_valid
);
5952 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5953 LOAD_IMGLIB_FN (library
, png_set_expand
);
5954 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5955 LOAD_IMGLIB_FN (library
, png_set_background
);
5956 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5957 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5958 LOAD_IMGLIB_FN (library
, png_get_channels
);
5959 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5960 LOAD_IMGLIB_FN (library
, png_read_image
);
5961 LOAD_IMGLIB_FN (library
, png_read_end
);
5962 LOAD_IMGLIB_FN (library
, png_error
);
5967 #define fn_png_get_io_ptr png_get_io_ptr
5968 #define fn_png_check_sig png_check_sig
5969 #define fn_png_create_read_struct png_create_read_struct
5970 #define fn_png_create_info_struct png_create_info_struct
5971 #define fn_png_destroy_read_struct png_destroy_read_struct
5972 #define fn_png_set_read_fn png_set_read_fn
5973 #define fn_png_set_sig_bytes png_set_sig_bytes
5974 #define fn_png_read_info png_read_info
5975 #define fn_png_get_IHDR png_get_IHDR
5976 #define fn_png_get_valid png_get_valid
5977 #define fn_png_set_strip_16 png_set_strip_16
5978 #define fn_png_set_expand png_set_expand
5979 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5980 #define fn_png_set_background png_set_background
5981 #define fn_png_get_bKGD png_get_bKGD
5982 #define fn_png_read_update_info png_read_update_info
5983 #define fn_png_get_channels png_get_channels
5984 #define fn_png_get_rowbytes png_get_rowbytes
5985 #define fn_png_read_image png_read_image
5986 #define fn_png_read_end png_read_end
5987 #define fn_png_error png_error
5989 #endif /* HAVE_NTGUI */
5991 /* Error and warning handlers installed when the PNG library
5995 my_png_error (png_ptr
, msg
)
5996 png_struct
*png_ptr
;
5999 xassert (png_ptr
!= NULL
);
6000 image_error ("PNG error: %s", build_string (msg
), Qnil
);
6001 longjmp (png_ptr
->jmpbuf
, 1);
6006 my_png_warning (png_ptr
, msg
)
6007 png_struct
*png_ptr
;
6010 xassert (png_ptr
!= NULL
);
6011 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
6014 /* Memory source for PNG decoding. */
6016 struct png_memory_storage
6018 unsigned char *bytes
; /* The data */
6019 size_t len
; /* How big is it? */
6020 int index
; /* Where are we? */
6024 /* Function set as reader function when reading PNG image from memory.
6025 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6026 bytes from the input to DATA. */
6029 png_read_from_memory (png_ptr
, data
, length
)
6030 png_structp png_ptr
;
6034 struct png_memory_storage
*tbr
6035 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
6037 if (length
> tbr
->len
- tbr
->index
)
6038 fn_png_error (png_ptr
, "Read error");
6040 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
6041 tbr
->index
= tbr
->index
+ length
;
6045 /* Function set as reader function when reading PNG image from a file.
6046 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6047 bytes from the input to DATA. */
6050 png_read_from_file (png_ptr
, data
, length
)
6051 png_structp png_ptr
;
6055 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
6057 if (fread (data
, 1, length
, fp
) < length
)
6058 fn_png_error (png_ptr
, "Read error");
6062 /* Load PNG image IMG for use on frame F. Value is non-zero if
6070 Lisp_Object file
, specified_file
;
6071 Lisp_Object specified_data
;
6073 XImagePtr ximg
, mask_img
= NULL
;
6074 struct gcpro gcpro1
;
6075 png_struct
*png_ptr
= NULL
;
6076 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
6077 FILE *volatile fp
= NULL
;
6079 png_byte
* volatile pixels
= NULL
;
6080 png_byte
** volatile rows
= NULL
;
6081 png_uint_32 width
, height
;
6082 int bit_depth
, color_type
, interlace_type
;
6084 png_uint_32 row_bytes
;
6086 double screen_gamma
;
6087 struct png_memory_storage tbr
; /* Data to be read */
6089 /* Find out what file to load. */
6090 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6091 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6095 if (NILP (specified_data
))
6097 file
= x_find_image_file (specified_file
);
6098 if (!STRINGP (file
))
6100 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6105 /* Open the image file. */
6106 fp
= fopen (SDATA (file
), "rb");
6109 image_error ("Cannot open image file `%s'", file
, Qnil
);
6114 /* Check PNG signature. */
6115 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
6116 || !fn_png_check_sig (sig
, sizeof sig
))
6118 image_error ("Not a PNG file: `%s'", file
, Qnil
);
6126 /* Read from memory. */
6127 tbr
.bytes
= SDATA (specified_data
);
6128 tbr
.len
= SBYTES (specified_data
);
6131 /* Check PNG signature. */
6132 if (tbr
.len
< sizeof sig
6133 || !fn_png_check_sig (tbr
.bytes
, sizeof sig
))
6135 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
6140 /* Need to skip past the signature. */
6141 tbr
.bytes
+= sizeof (sig
);
6144 /* Initialize read and info structs for PNG lib. Casting return
6145 value avoids a GCC warning on W32. */
6146 png_ptr
= (png_structp
)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
6151 if (fp
) fclose (fp
);
6156 /* Casting return value avoids a GCC warning on W32. */
6157 info_ptr
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6160 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
6161 if (fp
) fclose (fp
);
6166 /* Casting return value avoids a GCC warning on W32. */
6167 end_info
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6170 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
6171 if (fp
) fclose (fp
);
6176 /* Set error jump-back. We come back here when the PNG library
6177 detects an error. */
6178 if (setjmp (png_ptr
->jmpbuf
))
6182 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6185 if (fp
) fclose (fp
);
6190 /* Read image info. */
6191 if (!NILP (specified_data
))
6192 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
6194 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
6196 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
6197 fn_png_read_info (png_ptr
, info_ptr
);
6198 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
6199 &interlace_type
, NULL
, NULL
);
6201 if (!check_image_size (f
, width
, height
))
6204 /* If image contains simply transparency data, we prefer to
6205 construct a clipping mask. */
6206 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
6211 /* This function is easier to write if we only have to handle
6212 one data format: RGB or RGBA with 8 bits per channel. Let's
6213 transform other formats into that format. */
6215 /* Strip more than 8 bits per channel. */
6216 if (bit_depth
== 16)
6217 fn_png_set_strip_16 (png_ptr
);
6219 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
6221 fn_png_set_expand (png_ptr
);
6223 /* Convert grayscale images to RGB. */
6224 if (color_type
== PNG_COLOR_TYPE_GRAY
6225 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
6226 fn_png_set_gray_to_rgb (png_ptr
);
6228 screen_gamma
= (f
->gamma
? 1 / f
->gamma
/ 0.45455 : 2.2);
6230 #if 0 /* Avoid double gamma correction for PNG images. */
6231 { /* Tell the PNG lib to handle gamma correction for us. */
6234 #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
6235 if (png_get_sRGB (png_ptr
, info_ptr
, &intent
))
6236 /* The libpng documentation says this is right in this case. */
6237 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6240 if (png_get_gAMA (png_ptr
, info_ptr
, &image_gamma
))
6241 /* Image contains gamma information. */
6242 png_set_gamma (png_ptr
, screen_gamma
, image_gamma
);
6244 /* Use the standard default for the image gamma. */
6245 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6249 /* Handle alpha channel by combining the image with a background
6250 color. Do this only if a real alpha channel is supplied. For
6251 simple transparency, we prefer a clipping mask. */
6254 png_color_16
*image_bg
;
6255 Lisp_Object specified_bg
6256 = image_spec_value (img
->spec
, QCbackground
, NULL
);
6258 if (STRINGP (specified_bg
))
6259 /* The user specified `:background', use that. */
6261 /* W32 version incorrectly used COLORREF here!! ++kfs */
6263 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
6265 png_color_16 user_bg
;
6267 bzero (&user_bg
, sizeof user_bg
);
6268 user_bg
.red
= color
.red
>> 8;
6269 user_bg
.green
= color
.green
>> 8;
6270 user_bg
.blue
= color
.blue
>> 8;
6272 fn_png_set_background (png_ptr
, &user_bg
,
6273 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6276 else if (fn_png_get_bKGD (png_ptr
, info_ptr
, &image_bg
))
6277 /* Image contains a background color with which to
6278 combine the image. */
6279 fn_png_set_background (png_ptr
, image_bg
,
6280 PNG_BACKGROUND_GAMMA_FILE
, 1, 1.0);
6283 /* Image does not contain a background color with which
6284 to combine the image data via an alpha channel. Use
6285 the frame's background instead. */
6286 #ifdef HAVE_X_WINDOWS
6288 png_color_16 frame_background
;
6290 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
6291 x_query_color (f
, &color
);
6293 bzero (&frame_background
, sizeof frame_background
);
6294 frame_background
.red
= color
.red
>> 8;
6295 frame_background
.green
= color
.green
>> 8;
6296 frame_background
.blue
= color
.blue
>> 8;
6297 #endif /* HAVE_X_WINDOWS */
6301 png_color_16 frame_background
;
6302 color
= FRAME_BACKGROUND_PIXEL (f
);
6303 #if 0 /* W32 TODO : Colormap support. */
6304 x_query_color (f
, &color
);
6306 bzero (&frame_background
, sizeof frame_background
);
6307 frame_background
.red
= GetRValue (color
);
6308 frame_background
.green
= GetGValue (color
);
6309 frame_background
.blue
= GetBValue (color
);
6310 #endif /* HAVE_NTGUI */
6313 unsigned long color
;
6314 png_color_16 frame_background
;
6315 color
= FRAME_BACKGROUND_PIXEL (f
);
6316 #if 0 /* MAC/W32 TODO : Colormap support. */
6317 x_query_color (f
, &color
);
6319 bzero (&frame_background
, sizeof frame_background
);
6320 frame_background
.red
= RED_FROM_ULONG (color
);
6321 frame_background
.green
= GREEN_FROM_ULONG (color
);
6322 frame_background
.blue
= BLUE_FROM_ULONG (color
);
6325 fn_png_set_background (png_ptr
, &frame_background
,
6326 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6330 /* Update info structure. */
6331 fn_png_read_update_info (png_ptr
, info_ptr
);
6333 /* Get number of channels. Valid values are 1 for grayscale images
6334 and images with a palette, 2 for grayscale images with transparency
6335 information (alpha channel), 3 for RGB images, and 4 for RGB
6336 images with alpha channel, i.e. RGBA. If conversions above were
6337 sufficient we should only have 3 or 4 channels here. */
6338 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
6339 xassert (channels
== 3 || channels
== 4);
6341 /* Number of bytes needed for one row of the image. */
6342 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
6344 /* Allocate memory for the image. */
6345 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
6346 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
6347 for (i
= 0; i
< height
; ++i
)
6348 rows
[i
] = pixels
+ i
* row_bytes
;
6350 /* Read the entire image. */
6351 fn_png_read_image (png_ptr
, rows
);
6352 fn_png_read_end (png_ptr
, info_ptr
);
6359 /* Create the X image and pixmap. */
6360 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
6364 /* Create an image and pixmap serving as mask if the PNG image
6365 contains an alpha channel. */
6368 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
6369 &mask_img
, &img
->mask
))
6371 x_destroy_x_image (ximg
);
6372 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
6373 img
->pixmap
= NO_PIXMAP
;
6377 /* Fill the X image and mask from PNG data. */
6378 init_color_table ();
6380 for (y
= 0; y
< height
; ++y
)
6382 png_byte
*p
= rows
[y
];
6384 for (x
= 0; x
< width
; ++x
)
6391 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
6392 /* An alpha channel, aka mask channel, associates variable
6393 transparency with an image. Where other image formats
6394 support binary transparency---fully transparent or fully
6395 opaque---PNG allows up to 254 levels of partial transparency.
6396 The PNG library implements partial transparency by combining
6397 the image with a specified background color.
6399 I'm not sure how to handle this here nicely: because the
6400 background on which the image is displayed may change, for
6401 real alpha channel support, it would be necessary to create
6402 a new image for each possible background.
6404 What I'm doing now is that a mask is created if we have
6405 boolean transparency information. Otherwise I'm using
6406 the frame's background color to combine the image with. */
6411 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
6417 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6418 /* Set IMG's background color from the PNG image, unless the user
6422 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
6424 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
6425 img
->background_valid
= 1;
6429 #ifdef COLOR_TABLE_SUPPORT
6430 /* Remember colors allocated for this image. */
6431 img
->colors
= colors_in_color_table (&img
->ncolors
);
6432 free_color_table ();
6433 #endif /* COLOR_TABLE_SUPPORT */
6436 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6441 img
->height
= height
;
6443 /* Maybe fill in the background field while we have ximg handy.
6444 Casting avoids a GCC warning. */
6445 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6447 /* Put the image into the pixmap, then free the X image and its buffer. */
6448 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6449 x_destroy_x_image (ximg
);
6451 /* Same for the mask. */
6454 /* Fill in the background_transparent field while we have the
6455 mask handy. Casting avoids a GCC warning. */
6456 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
6458 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
6459 x_destroy_x_image (mask_img
);
6466 #else /* HAVE_PNG */
6475 if (MyCGImageCreateWithPNGDataProvider
)
6476 return image_load_quartz2d (f
, img
, 1);
6479 return image_load_quicktime (f
, img
, kQTFileTypePNG
);
6483 #endif /* !HAVE_PNG */
6487 /***********************************************************************
6489 ***********************************************************************/
6491 #if defined (HAVE_JPEG) || defined (MAC_OS)
6493 static int jpeg_image_p
P_ ((Lisp_Object object
));
6494 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
6496 /* The symbol `jpeg' identifying images of this type. */
6500 /* Indices of image specification fields in gs_format, below. */
6502 enum jpeg_keyword_index
6511 JPEG_HEURISTIC_MASK
,
6517 /* Vector of image_keyword structures describing the format
6518 of valid user-defined image specifications. */
6520 static struct image_keyword jpeg_format
[JPEG_LAST
] =
6522 {":type", IMAGE_SYMBOL_VALUE
, 1},
6523 {":data", IMAGE_STRING_VALUE
, 0},
6524 {":file", IMAGE_STRING_VALUE
, 0},
6525 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6526 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6527 {":relief", IMAGE_INTEGER_VALUE
, 0},
6528 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6529 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6530 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6531 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6534 /* Structure describing the image type `jpeg'. */
6536 static struct image_type jpeg_type
=
6545 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6548 jpeg_image_p (object
)
6551 struct image_keyword fmt
[JPEG_LAST
];
6553 bcopy (jpeg_format
, fmt
, sizeof fmt
);
6555 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6558 /* Must specify either the :data or :file keyword. */
6559 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6562 #endif /* HAVE_JPEG || MAC_OS */
6566 /* Work around a warning about HAVE_STDLIB_H being redefined in
6568 #ifdef HAVE_STDLIB_H
6569 #define HAVE_STDLIB_H_1
6570 #undef HAVE_STDLIB_H
6571 #endif /* HAVE_STLIB_H */
6573 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6574 /* In older releases of the jpeg library, jpeglib.h will define boolean
6575 differently depending on __WIN32__, so make sure it is defined. */
6579 #include <jpeglib.h>
6583 #ifdef HAVE_STLIB_H_1
6584 #define HAVE_STDLIB_H 1
6589 /* JPEG library details. */
6590 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6591 DEF_IMGLIB_FN (jpeg_start_decompress
);
6592 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6593 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6594 DEF_IMGLIB_FN (jpeg_read_header
);
6595 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6596 DEF_IMGLIB_FN (jpeg_std_error
);
6597 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6600 init_jpeg_functions (Lisp_Object libraries
)
6604 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6607 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6608 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6609 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6610 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6611 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6612 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6613 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6614 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6618 /* Wrapper since we can't directly assign the function pointer
6619 to another function pointer that was declared more completely easily. */
6621 jpeg_resync_to_restart_wrapper(cinfo
, desired
)
6622 j_decompress_ptr cinfo
;
6625 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6630 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6631 #define fn_jpeg_start_decompress jpeg_start_decompress
6632 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6633 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6634 #define fn_jpeg_read_header jpeg_read_header
6635 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6636 #define fn_jpeg_std_error jpeg_std_error
6637 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6639 #endif /* HAVE_NTGUI */
6641 struct my_jpeg_error_mgr
6643 struct jpeg_error_mgr pub
;
6644 jmp_buf setjmp_buffer
;
6649 my_error_exit (cinfo
)
6652 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6653 longjmp (mgr
->setjmp_buffer
, 1);
6657 /* Init source method for JPEG data source manager. Called by
6658 jpeg_read_header() before any data is actually read. See
6659 libjpeg.doc from the JPEG lib distribution. */
6662 our_common_init_source (cinfo
)
6663 j_decompress_ptr cinfo
;
6668 /* Method to terminate data source. Called by
6669 jpeg_finish_decompress() after all data has been processed. */
6672 our_common_term_source (cinfo
)
6673 j_decompress_ptr cinfo
;
6678 /* Fill input buffer method for JPEG data source manager. Called
6679 whenever more data is needed. We read the whole image in one step,
6680 so this only adds a fake end of input marker at the end. */
6683 our_memory_fill_input_buffer (cinfo
)
6684 j_decompress_ptr cinfo
;
6686 /* Insert a fake EOI marker. */
6687 struct jpeg_source_mgr
*src
= cinfo
->src
;
6688 static JOCTET buffer
[2];
6690 buffer
[0] = (JOCTET
) 0xFF;
6691 buffer
[1] = (JOCTET
) JPEG_EOI
;
6693 src
->next_input_byte
= buffer
;
6694 src
->bytes_in_buffer
= 2;
6699 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6700 is the JPEG data source manager. */
6703 our_memory_skip_input_data (cinfo
, num_bytes
)
6704 j_decompress_ptr cinfo
;
6707 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6711 if (num_bytes
> src
->bytes_in_buffer
)
6712 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6714 src
->bytes_in_buffer
-= num_bytes
;
6715 src
->next_input_byte
+= num_bytes
;
6720 /* Set up the JPEG lib for reading an image from DATA which contains
6721 LEN bytes. CINFO is the decompression info structure created for
6722 reading the image. */
6725 jpeg_memory_src (cinfo
, data
, len
)
6726 j_decompress_ptr cinfo
;
6730 struct jpeg_source_mgr
*src
;
6732 if (cinfo
->src
== NULL
)
6734 /* First time for this JPEG object? */
6735 cinfo
->src
= (struct jpeg_source_mgr
*)
6736 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6737 sizeof (struct jpeg_source_mgr
));
6738 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6739 src
->next_input_byte
= data
;
6742 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6743 src
->init_source
= our_common_init_source
;
6744 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6745 src
->skip_input_data
= our_memory_skip_input_data
;
6746 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6747 src
->term_source
= our_common_term_source
;
6748 src
->bytes_in_buffer
= len
;
6749 src
->next_input_byte
= data
;
6753 struct jpeg_stdio_mgr
6755 struct jpeg_source_mgr mgr
;
6762 /* Size of buffer to read JPEG from file.
6763 Not too big, as we want to use alloc_small. */
6764 #define JPEG_STDIO_BUFFER_SIZE 8192
6767 /* Fill input buffer method for JPEG data source manager. Called
6768 whenever more data is needed. The data is read from a FILE *. */
6771 our_stdio_fill_input_buffer (cinfo
)
6772 j_decompress_ptr cinfo
;
6774 struct jpeg_stdio_mgr
*src
;
6776 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6781 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6783 src
->mgr
.bytes_in_buffer
= bytes
;
6786 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6788 src
->buffer
[0] = (JOCTET
) 0xFF;
6789 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6790 src
->mgr
.bytes_in_buffer
= 2;
6792 src
->mgr
.next_input_byte
= src
->buffer
;
6799 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6800 is the JPEG data source manager. */
6803 our_stdio_skip_input_data (cinfo
, num_bytes
)
6804 j_decompress_ptr cinfo
;
6807 struct jpeg_stdio_mgr
*src
;
6808 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6810 while (num_bytes
> 0 && !src
->finished
)
6812 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6814 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6815 src
->mgr
.next_input_byte
+= num_bytes
;
6820 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6821 src
->mgr
.bytes_in_buffer
= 0;
6822 src
->mgr
.next_input_byte
= NULL
;
6824 our_stdio_fill_input_buffer (cinfo
);
6830 /* Set up the JPEG lib for reading an image from a FILE *.
6831 CINFO is the decompression info structure created for
6832 reading the image. */
6835 jpeg_file_src (cinfo
, fp
)
6836 j_decompress_ptr cinfo
;
6839 struct jpeg_stdio_mgr
*src
;
6841 if (cinfo
->src
!= NULL
)
6842 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6845 /* First time for this JPEG object? */
6846 cinfo
->src
= (struct jpeg_source_mgr
*)
6847 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6848 sizeof (struct jpeg_stdio_mgr
));
6849 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6850 src
->buffer
= (JOCTET
*)
6851 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6852 JPEG_STDIO_BUFFER_SIZE
);
6857 src
->mgr
.init_source
= our_common_init_source
;
6858 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6859 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6860 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6861 src
->mgr
.term_source
= our_common_term_source
;
6862 src
->mgr
.bytes_in_buffer
= 0;
6863 src
->mgr
.next_input_byte
= NULL
;
6867 /* Load image IMG for use on frame F. Patterned after example.c
6868 from the JPEG lib. */
6875 struct jpeg_decompress_struct cinfo
;
6876 struct my_jpeg_error_mgr mgr
;
6877 Lisp_Object file
, specified_file
;
6878 Lisp_Object specified_data
;
6879 FILE * volatile fp
= NULL
;
6881 int row_stride
, x
, y
;
6882 XImagePtr ximg
= NULL
;
6884 unsigned long *colors
;
6886 struct gcpro gcpro1
;
6888 /* Open the JPEG file. */
6889 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6890 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6894 if (NILP (specified_data
))
6896 file
= x_find_image_file (specified_file
);
6897 if (!STRINGP (file
))
6899 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6904 fp
= fopen (SDATA (file
), "rb");
6907 image_error ("Cannot open `%s'", file
, Qnil
);
6913 /* Customize libjpeg's error handling to call my_error_exit when an
6914 error is detected. This function will perform a longjmp.
6915 Casting return value avoids a GCC warning on W32. */
6916 cinfo
.err
= (struct jpeg_error_mgr
*)fn_jpeg_std_error (&mgr
.pub
);
6917 mgr
.pub
.error_exit
= my_error_exit
;
6919 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6923 /* Called from my_error_exit. Display a JPEG error. */
6924 char buffer
[JMSG_LENGTH_MAX
];
6925 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
6926 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6927 build_string (buffer
));
6930 /* Close the input file and destroy the JPEG object. */
6932 fclose ((FILE *) fp
);
6933 fn_jpeg_destroy_decompress (&cinfo
);
6935 /* If we already have an XImage, free that. */
6936 x_destroy_x_image (ximg
);
6938 /* Free pixmap and colors. */
6939 x_clear_image (f
, img
);
6945 /* Create the JPEG decompression object. Let it read from fp.
6946 Read the JPEG image header. */
6947 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6949 if (NILP (specified_data
))
6950 jpeg_file_src (&cinfo
, (FILE *) fp
);
6952 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6953 SBYTES (specified_data
));
6955 fn_jpeg_read_header (&cinfo
, 1);
6957 /* Customize decompression so that color quantization will be used.
6958 Start decompression. */
6959 cinfo
.quantize_colors
= 1;
6960 fn_jpeg_start_decompress (&cinfo
);
6961 width
= img
->width
= cinfo
.output_width
;
6962 height
= img
->height
= cinfo
.output_height
;
6964 if (!check_image_size (f
, width
, height
))
6966 image_error ("Invalid image size", Qnil
, Qnil
);
6967 longjmp (mgr
.setjmp_buffer
, 2);
6970 /* Create X image and pixmap. */
6971 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6972 longjmp (mgr
.setjmp_buffer
, 2);
6974 /* Allocate colors. When color quantization is used,
6975 cinfo.actual_number_of_colors has been set with the number of
6976 colors generated, and cinfo.colormap is a two-dimensional array
6977 of color indices in the range 0..cinfo.actual_number_of_colors.
6978 No more than 255 colors will be generated. */
6982 if (cinfo
.out_color_components
> 2)
6983 ir
= 0, ig
= 1, ib
= 2;
6984 else if (cinfo
.out_color_components
> 1)
6985 ir
= 0, ig
= 1, ib
= 0;
6987 ir
= 0, ig
= 0, ib
= 0;
6989 /* Use the color table mechanism because it handles colors that
6990 cannot be allocated nicely. Such colors will be replaced with
6991 a default color, and we don't have to care about which colors
6992 can be freed safely, and which can't. */
6993 init_color_table ();
6994 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6997 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6999 /* Multiply RGB values with 255 because X expects RGB values
7000 in the range 0..0xffff. */
7001 int r
= cinfo
.colormap
[ir
][i
] << 8;
7002 int g
= cinfo
.colormap
[ig
][i
] << 8;
7003 int b
= cinfo
.colormap
[ib
][i
] << 8;
7004 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7007 #ifdef COLOR_TABLE_SUPPORT
7008 /* Remember those colors actually allocated. */
7009 img
->colors
= colors_in_color_table (&img
->ncolors
);
7010 free_color_table ();
7011 #endif /* COLOR_TABLE_SUPPORT */
7015 row_stride
= width
* cinfo
.output_components
;
7016 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
7018 for (y
= 0; y
< height
; ++y
)
7020 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
7021 for (x
= 0; x
< cinfo
.output_width
; ++x
)
7022 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
7026 fn_jpeg_finish_decompress (&cinfo
);
7027 fn_jpeg_destroy_decompress (&cinfo
);
7029 fclose ((FILE *) fp
);
7031 /* Maybe fill in the background field while we have ximg handy. */
7032 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7033 /* Casting avoids a GCC warning. */
7034 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7036 /* Put the image into the pixmap. */
7037 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7038 x_destroy_x_image (ximg
);
7043 #else /* HAVE_JPEG */
7052 return image_load_quartz2d (f
, img
, 0);
7054 return image_load_quicktime (f
, img
, kQTFileTypeJPEG
);
7059 #endif /* !HAVE_JPEG */
7063 /***********************************************************************
7065 ***********************************************************************/
7067 #if defined (HAVE_TIFF) || defined (MAC_OS)
7069 static int tiff_image_p
P_ ((Lisp_Object object
));
7070 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
7072 /* The symbol `tiff' identifying images of this type. */
7076 /* Indices of image specification fields in tiff_format, below. */
7078 enum tiff_keyword_index
7087 TIFF_HEURISTIC_MASK
,
7093 /* Vector of image_keyword structures describing the format
7094 of valid user-defined image specifications. */
7096 static struct image_keyword tiff_format
[TIFF_LAST
] =
7098 {":type", IMAGE_SYMBOL_VALUE
, 1},
7099 {":data", IMAGE_STRING_VALUE
, 0},
7100 {":file", IMAGE_STRING_VALUE
, 0},
7101 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7102 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7103 {":relief", IMAGE_INTEGER_VALUE
, 0},
7104 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7105 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7106 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7107 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7110 /* Structure describing the image type `tiff'. */
7112 static struct image_type tiff_type
=
7121 /* Return non-zero if OBJECT is a valid TIFF image specification. */
7124 tiff_image_p (object
)
7127 struct image_keyword fmt
[TIFF_LAST
];
7128 bcopy (tiff_format
, fmt
, sizeof fmt
);
7130 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
7133 /* Must specify either the :data or :file keyword. */
7134 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
7137 #endif /* HAVE_TIFF || MAC_OS */
7145 /* TIFF library details. */
7146 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
7147 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
7148 DEF_IMGLIB_FN (TIFFOpen
);
7149 DEF_IMGLIB_FN (TIFFClientOpen
);
7150 DEF_IMGLIB_FN (TIFFGetField
);
7151 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
7152 DEF_IMGLIB_FN (TIFFClose
);
7155 init_tiff_functions (Lisp_Object libraries
)
7159 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
7162 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
7163 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
7164 LOAD_IMGLIB_FN (library
, TIFFOpen
);
7165 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
7166 LOAD_IMGLIB_FN (library
, TIFFGetField
);
7167 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
7168 LOAD_IMGLIB_FN (library
, TIFFClose
);
7174 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
7175 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
7176 #define fn_TIFFOpen TIFFOpen
7177 #define fn_TIFFClientOpen TIFFClientOpen
7178 #define fn_TIFFGetField TIFFGetField
7179 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
7180 #define fn_TIFFClose TIFFClose
7182 #endif /* HAVE_NTGUI */
7185 /* Reading from a memory buffer for TIFF images Based on the PNG
7186 memory source, but we have to provide a lot of extra functions.
7189 We really only need to implement read and seek, but I am not
7190 convinced that the TIFF library is smart enough not to destroy
7191 itself if we only hand it the function pointers we need to
7196 unsigned char *bytes
;
7203 tiff_read_from_memory (data
, buf
, size
)
7208 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7210 if (size
> src
->len
- src
->index
)
7212 bcopy (src
->bytes
+ src
->index
, buf
, size
);
7218 tiff_write_from_memory (data
, buf
, size
)
7227 tiff_seek_in_memory (data
, off
, whence
)
7232 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7237 case SEEK_SET
: /* Go from beginning of source. */
7241 case SEEK_END
: /* Go from end of source. */
7242 idx
= src
->len
+ off
;
7245 case SEEK_CUR
: /* Go from current position. */
7246 idx
= src
->index
+ off
;
7249 default: /* Invalid `whence'. */
7253 if (idx
> src
->len
|| idx
< 0)
7261 tiff_close_memory (data
)
7269 tiff_mmap_memory (data
, pbase
, psize
)
7274 /* It is already _IN_ memory. */
7279 tiff_unmap_memory (data
, base
, size
)
7284 /* We don't need to do this. */
7288 tiff_size_of_memory (data
)
7291 return ((tiff_memory_source
*) data
)->len
;
7296 tiff_error_handler (title
, format
, ap
)
7297 const char *title
, *format
;
7303 len
= sprintf (buf
, "TIFF error: %s ", title
);
7304 vsprintf (buf
+ len
, format
, ap
);
7305 add_to_log (buf
, Qnil
, Qnil
);
7310 tiff_warning_handler (title
, format
, ap
)
7311 const char *title
, *format
;
7317 len
= sprintf (buf
, "TIFF warning: %s ", title
);
7318 vsprintf (buf
+ len
, format
, ap
);
7319 add_to_log (buf
, Qnil
, Qnil
);
7323 /* Load TIFF image IMG for use on frame F. Value is non-zero if
7331 Lisp_Object file
, specified_file
;
7332 Lisp_Object specified_data
;
7334 int width
, height
, x
, y
;
7338 struct gcpro gcpro1
;
7339 tiff_memory_source memsrc
;
7341 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7342 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7346 fn_TIFFSetErrorHandler (tiff_error_handler
);
7347 fn_TIFFSetWarningHandler (tiff_warning_handler
);
7349 if (NILP (specified_data
))
7351 /* Read from a file */
7352 file
= x_find_image_file (specified_file
);
7353 if (!STRINGP (file
))
7355 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7360 /* Try to open the image file. Casting return value avoids a
7361 GCC warning on W32. */
7362 tiff
= (TIFF
*)fn_TIFFOpen (SDATA (file
), "r");
7365 image_error ("Cannot open `%s'", file
, Qnil
);
7372 /* Memory source! */
7373 memsrc
.bytes
= SDATA (specified_data
);
7374 memsrc
.len
= SBYTES (specified_data
);
7377 /* Casting return value avoids a GCC warning on W32. */
7378 tiff
= (TIFF
*)fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
7379 (TIFFReadWriteProc
) tiff_read_from_memory
,
7380 (TIFFReadWriteProc
) tiff_write_from_memory
,
7381 tiff_seek_in_memory
,
7383 tiff_size_of_memory
,
7389 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
7395 /* Get width and height of the image, and allocate a raster buffer
7396 of width x height 32-bit values. */
7397 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
7398 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
7400 if (!check_image_size (f
, width
, height
))
7402 image_error ("Invalid image size", Qnil
, Qnil
);
7407 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
7409 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
7410 fn_TIFFClose (tiff
);
7413 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
7419 /* Create the X image and pixmap. */
7420 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7427 /* Initialize the color table. */
7428 init_color_table ();
7430 /* Process the pixel raster. Origin is in the lower-left corner. */
7431 for (y
= 0; y
< height
; ++y
)
7433 uint32
*row
= buf
+ y
* width
;
7435 for (x
= 0; x
< width
; ++x
)
7437 uint32 abgr
= row
[x
];
7438 int r
= TIFFGetR (abgr
) << 8;
7439 int g
= TIFFGetG (abgr
) << 8;
7440 int b
= TIFFGetB (abgr
) << 8;
7441 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
7445 #ifdef COLOR_TABLE_SUPPORT
7446 /* Remember the colors allocated for the image. Free the color table. */
7447 img
->colors
= colors_in_color_table (&img
->ncolors
);
7448 free_color_table ();
7449 #endif /* COLOR_TABLE_SUPPORT */
7452 img
->height
= height
;
7454 /* Maybe fill in the background field while we have ximg handy. */
7455 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7456 /* Casting avoids a GCC warning on W32. */
7457 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7459 /* Put the image into the pixmap, then free the X image and its buffer. */
7460 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7461 x_destroy_x_image (ximg
);
7468 #else /* HAVE_TIFF */
7476 return image_load_quicktime (f
, img
, kQTFileTypeTIFF
);
7480 #endif /* !HAVE_TIFF */
7484 /***********************************************************************
7486 ***********************************************************************/
7488 #if defined (HAVE_GIF) || defined (MAC_OS)
7490 static int gif_image_p
P_ ((Lisp_Object object
));
7491 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
7492 static void gif_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7494 /* The symbol `gif' identifying images of this type. */
7498 /* Indices of image specification fields in gif_format, below. */
7500 enum gif_keyword_index
7516 /* Vector of image_keyword structures describing the format
7517 of valid user-defined image specifications. */
7519 static struct image_keyword gif_format
[GIF_LAST
] =
7521 {":type", IMAGE_SYMBOL_VALUE
, 1},
7522 {":data", IMAGE_STRING_VALUE
, 0},
7523 {":file", IMAGE_STRING_VALUE
, 0},
7524 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7525 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7526 {":relief", IMAGE_INTEGER_VALUE
, 0},
7527 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7528 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7529 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7530 {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
7531 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7534 /* Structure describing the image type `gif'. */
7536 static struct image_type gif_type
=
7545 /* Free X resources of GIF image IMG which is used on frame F. */
7548 gif_clear_image (f
, img
)
7552 /* IMG->data.ptr_val may contain extension data. */
7553 img
->data
.lisp_val
= Qnil
;
7554 x_clear_image (f
, img
);
7557 /* Return non-zero if OBJECT is a valid GIF image specification. */
7560 gif_image_p (object
)
7563 struct image_keyword fmt
[GIF_LAST
];
7564 bcopy (gif_format
, fmt
, sizeof fmt
);
7566 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7569 /* Must specify either the :data or :file keyword. */
7570 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7573 #endif /* HAVE_GIF || MAC_OS */
7577 #if defined (HAVE_NTGUI) || defined (MAC_OS)
7578 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7579 Undefine before redefining to avoid a preprocessor warning. */
7583 /* avoid conflict with QuickdrawText.h */
7584 #define DrawText gif_DrawText
7585 #include <gif_lib.h>
7588 #else /* HAVE_NTGUI || MAC_OS */
7590 #include <gif_lib.h>
7592 #endif /* HAVE_NTGUI || MAC_OS */
7597 /* GIF library details. */
7598 DEF_IMGLIB_FN (DGifCloseFile
);
7599 DEF_IMGLIB_FN (DGifSlurp
);
7600 DEF_IMGLIB_FN (DGifOpen
);
7601 DEF_IMGLIB_FN (DGifOpenFileName
);
7604 init_gif_functions (Lisp_Object libraries
)
7608 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7611 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7612 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7613 LOAD_IMGLIB_FN (library
, DGifOpen
);
7614 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7620 #define fn_DGifCloseFile DGifCloseFile
7621 #define fn_DGifSlurp DGifSlurp
7622 #define fn_DGifOpen DGifOpen
7623 #define fn_DGifOpenFileName DGifOpenFileName
7625 #endif /* HAVE_NTGUI */
7627 /* Reading a GIF image from memory
7628 Based on the PNG memory stuff to a certain extent. */
7632 unsigned char *bytes
;
7638 /* Make the current memory source available to gif_read_from_memory.
7639 It's done this way because not all versions of libungif support
7640 a UserData field in the GifFileType structure. */
7641 static gif_memory_source
*current_gif_memory_src
;
7644 gif_read_from_memory (file
, buf
, len
)
7649 gif_memory_source
*src
= current_gif_memory_src
;
7651 if (len
> src
->len
- src
->index
)
7654 bcopy (src
->bytes
+ src
->index
, buf
, len
);
7660 /* Load GIF image IMG for use on frame F. Value is non-zero if
7668 Lisp_Object file
, specified_file
;
7669 Lisp_Object specified_data
;
7670 int rc
, width
, height
, x
, y
, i
;
7672 ColorMapObject
*gif_color_map
;
7673 unsigned long pixel_colors
[256];
7675 struct gcpro gcpro1
;
7677 int ino
, image_height
, image_width
;
7678 gif_memory_source memsrc
;
7679 unsigned char *raster
;
7681 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7682 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7686 if (NILP (specified_data
))
7688 file
= x_find_image_file (specified_file
);
7689 if (!STRINGP (file
))
7691 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7696 /* Open the GIF file. Casting return value avoids a GCC warning
7698 gif
= (GifFileType
*)fn_DGifOpenFileName (SDATA (file
));
7701 image_error ("Cannot open `%s'", file
, Qnil
);
7708 /* Read from memory! */
7709 current_gif_memory_src
= &memsrc
;
7710 memsrc
.bytes
= SDATA (specified_data
);
7711 memsrc
.len
= SBYTES (specified_data
);
7714 /* Casting return value avoids a GCC warning on W32. */
7715 gif
= (GifFileType
*)fn_DGifOpen(&memsrc
, gif_read_from_memory
);
7718 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7724 /* Before reading entire contents, check the declared image size. */
7725 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7727 image_error ("Invalid image size", Qnil
, Qnil
);
7728 fn_DGifCloseFile (gif
);
7733 /* Read entire contents. */
7734 rc
= fn_DGifSlurp (gif
);
7735 if (rc
== GIF_ERROR
)
7737 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7738 fn_DGifCloseFile (gif
);
7743 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7744 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7745 if (ino
>= gif
->ImageCount
)
7747 image_error ("Invalid image number `%s' in image `%s'",
7749 fn_DGifCloseFile (gif
);
7754 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7755 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7756 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7757 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7758 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7759 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7761 width
= img
->width
= max (gif
->SWidth
,
7762 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7763 img
->corners
[RIGHT_CORNER
]));
7764 height
= img
->height
= max (gif
->SHeight
,
7765 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7766 img
->corners
[BOT_CORNER
]));
7768 if (!check_image_size (f
, width
, height
))
7770 image_error ("Invalid image size", Qnil
, Qnil
);
7771 fn_DGifCloseFile (gif
);
7776 /* Create the X image and pixmap. */
7777 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7779 fn_DGifCloseFile (gif
);
7784 /* Allocate colors. */
7785 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7787 gif_color_map
= gif
->SColorMap
;
7788 init_color_table ();
7789 bzero (pixel_colors
, sizeof pixel_colors
);
7791 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7793 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7794 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7795 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7796 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7799 #ifdef COLOR_TABLE_SUPPORT
7800 img
->colors
= colors_in_color_table (&img
->ncolors
);
7801 free_color_table ();
7802 #endif /* COLOR_TABLE_SUPPORT */
7804 /* Clear the part of the screen image that are not covered by
7805 the image from the GIF file. Full animated GIF support
7806 requires more than can be done here (see the gif89 spec,
7807 disposal methods). Let's simply assume that the part
7808 not covered by a sub-image is in the frame's background color. */
7809 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7810 for (x
= 0; x
< width
; ++x
)
7811 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7813 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7814 for (x
= 0; x
< width
; ++x
)
7815 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7817 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7819 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7820 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7821 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7822 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7825 /* Read the GIF image into the X image. We use a local variable
7826 `raster' here because RasterBits below is a char *, and invites
7827 problems with bytes >= 0x80. */
7828 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7830 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7832 static int interlace_start
[] = {0, 4, 2, 1};
7833 static int interlace_increment
[] = {8, 8, 4, 2};
7835 int row
= interlace_start
[0];
7839 for (y
= 0; y
< image_height
; y
++)
7841 if (row
>= image_height
)
7843 row
= interlace_start
[++pass
];
7844 while (row
>= image_height
)
7845 row
= interlace_start
[++pass
];
7848 for (x
= 0; x
< image_width
; x
++)
7850 int i
= raster
[(y
* image_width
) + x
];
7851 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7852 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7855 row
+= interlace_increment
[pass
];
7860 for (y
= 0; y
< image_height
; ++y
)
7861 for (x
= 0; x
< image_width
; ++x
)
7863 int i
= raster
[y
* image_width
+ x
];
7864 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7865 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7869 /* Save GIF image extension data for `image-extension-data'.
7870 Format is (count IMAGES FUNCTION "BYTES" ...). */
7871 img
->data
.lisp_val
= Qnil
;
7872 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7874 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7875 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7876 /* Append (... FUNCTION "BYTES") */
7877 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7878 Fcons (make_number (ext
->Function
),
7879 img
->data
.lisp_val
));
7880 img
->data
.lisp_val
= Fnreverse (img
->data
.lisp_val
);
7882 if (gif
->ImageCount
> 1)
7883 img
->data
.lisp_val
= Fcons (Qcount
,
7884 Fcons (make_number (gif
->ImageCount
),
7885 img
->data
.lisp_val
));
7887 fn_DGifCloseFile (gif
);
7889 /* Maybe fill in the background field while we have ximg handy. */
7890 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7891 /* Casting avoids a GCC warning. */
7892 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7894 /* Put the image into the pixmap, then free the X image and its buffer. */
7895 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7896 x_destroy_x_image (ximg
);
7902 #else /* !HAVE_GIF */
7910 Lisp_Object specified_file
, file
;
7911 Lisp_Object specified_data
;
7913 Boolean graphic_p
, movie_p
, prefer_graphic_p
;
7921 Lisp_Object specified_bg
;
7926 TimeScale time_scale
;
7927 TimeValue time
, duration
;
7932 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7933 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7935 /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */
7938 if (NILP (specified_data
))
7940 /* Read from a file */
7944 err
= find_image_fsspec (specified_file
, &file
, &fss
);
7948 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7953 err
= CanQuickTimeOpenFile (&fss
, kQTFileTypeGIF
, 0,
7954 &graphic_p
, &movie_p
, &prefer_graphic_p
, 0);
7958 if (!graphic_p
&& !movie_p
)
7960 if (prefer_graphic_p
)
7961 return image_load_qt_1 (f
, img
, kQTFileTypeGIF
, &fss
, NULL
);
7962 err
= OpenMovieFile (&fss
, &refnum
, fsRdPerm
);
7965 err
= NewMovieFromFile (&movie
, refnum
, NULL
, NULL
, 0, NULL
);
7966 CloseMovieFile (refnum
);
7969 image_error ("Error reading `%s'", file
, Qnil
);
7975 /* Memory source! */
7977 long file_type_atom
[3];
7979 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
7982 image_error ("Cannot allocate data handle for `%s'",
7987 file_type_atom
[0] = EndianU32_NtoB (sizeof (long) * 3);
7988 file_type_atom
[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType
);
7989 file_type_atom
[2] = EndianU32_NtoB (kQTFileTypeGIF
);
7990 err
= PtrToHand (&dh
, &dref
, sizeof (Handle
));
7993 err
= PtrAndHand ("\p", dref
, 1);
7995 err
= PtrAndHand (file_type_atom
, dref
, sizeof (long) * 3);
7998 image_error ("Cannot allocate handle data ref for `%s'", img
->spec
, Qnil
);
8001 err
= CanQuickTimeOpenDataRef (dref
, HandleDataHandlerSubType
, &graphic_p
,
8002 &movie_p
, &prefer_graphic_p
, 0);
8006 if (!graphic_p
&& !movie_p
)
8008 if (prefer_graphic_p
)
8012 DisposeHandle (dref
);
8013 success_p
= image_load_qt_1 (f
, img
, kQTFileTypeGIF
, NULL
, dh
);
8017 err
= NewMovieFromDataRef (&movie
, 0, NULL
, dref
,
8018 HandleDataHandlerSubType
);
8019 DisposeHandle (dref
);
8024 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
8025 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
8026 track
= GetMovieIndTrack (movie
, 1);
8027 media
= GetTrackMedia (track
);
8028 nsamples
= GetMediaSampleCount (media
);
8029 if (ino
>= nsamples
)
8031 image_error ("Invalid image number `%s' in image `%s'",
8035 time_scale
= GetMediaTimeScale (media
);
8037 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8038 if (!STRINGP (specified_bg
) ||
8039 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
8041 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8042 color
.red
= RED16_FROM_ULONG (color
.pixel
);
8043 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
8044 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
8046 GetMovieBox (movie
, &rect
);
8047 width
= img
->width
= rect
.right
- rect
.left
;
8048 height
= img
->height
= rect
.bottom
- rect
.top
;
8049 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8052 GetGWorld (&old_port
, &old_gdh
);
8053 SetGWorld (ximg
, NULL
);
8054 bg_color
.red
= color
.red
;
8055 bg_color
.green
= color
.green
;
8056 bg_color
.blue
= color
.blue
;
8057 RGBBackColor (&bg_color
);
8058 SetGWorld (old_port
, old_gdh
);
8059 SetMovieActive (movie
, 1);
8060 SetMovieGWorld (movie
, ximg
, NULL
);
8061 SampleNumToMediaTime (media
, ino
+ 1, &time
, &duration
);
8062 SetMovieTimeValue (movie
, time
);
8063 MoviesTask (movie
, 0L);
8064 DisposeTrackMedia (media
);
8065 DisposeMovieTrack (track
);
8066 DisposeMovie (movie
);
8070 /* Save GIF image extension data for `image-extension-data'.
8071 Format is (count IMAGES 0xf9 GRAPHIC_CONTROL_EXTENSION_BLOCK). */
8073 Lisp_Object gce
= make_uninit_string (4);
8074 int centisec
= ((float)duration
/ time_scale
) * 100.0f
+ 0.5f
;
8076 /* Fill the delay time field. */
8077 SSET (gce
, 1, centisec
& 0xff);
8078 SSET (gce
, 2, (centisec
>> 8) & 0xff);
8079 /* We don't know about other fields. */
8083 img
->data
.lisp_val
= list4 (Qcount
, make_number (nsamples
),
8084 make_number (0xf9), gce
);
8087 /* Maybe fill in the background field while we have ximg handy. */
8088 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
8089 IMAGE_BACKGROUND (img
, f
, ximg
);
8091 /* Put the image into the pixmap. */
8092 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8093 x_destroy_x_image (ximg
);
8097 image_error ("Cannot open `%s'", file
, Qnil
);
8100 DisposeTrackMedia (media
);
8102 DisposeMovieTrack (track
);
8104 DisposeMovie (movie
);
8111 #endif /* HAVE_GIF */
8115 /***********************************************************************
8117 ***********************************************************************/
8119 #ifdef HAVE_X_WINDOWS
8120 #define HAVE_GHOSTSCRIPT 1
8121 #endif /* HAVE_X_WINDOWS */
8123 /* The symbol `postscript' identifying images of this type. */
8125 Lisp_Object Qpostscript
;
8127 #ifdef HAVE_GHOSTSCRIPT
8129 static int gs_image_p
P_ ((Lisp_Object object
));
8130 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
8131 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
8133 /* Keyword symbols. */
8135 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8137 /* Indices of image specification fields in gs_format, below. */
8139 enum gs_keyword_index
8157 /* Vector of image_keyword structures describing the format
8158 of valid user-defined image specifications. */
8160 static struct image_keyword gs_format
[GS_LAST
] =
8162 {":type", IMAGE_SYMBOL_VALUE
, 1},
8163 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8164 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8165 {":file", IMAGE_STRING_VALUE
, 1},
8166 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8167 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8168 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8169 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8170 {":relief", IMAGE_INTEGER_VALUE
, 0},
8171 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8172 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8173 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8174 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8177 /* Structure describing the image type `ghostscript'. */
8179 static struct image_type gs_type
=
8189 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8192 gs_clear_image (f
, img
)
8196 /* IMG->data.ptr_val may contain a recorded colormap. */
8197 xfree (img
->data
.ptr_val
);
8198 x_clear_image (f
, img
);
8202 /* Return non-zero if OBJECT is a valid Ghostscript image
8209 struct image_keyword fmt
[GS_LAST
];
8213 bcopy (gs_format
, fmt
, sizeof fmt
);
8215 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8218 /* Bounding box must be a list or vector containing 4 integers. */
8219 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8222 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8223 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8228 else if (VECTORP (tem
))
8230 if (XVECTOR (tem
)->size
!= 4)
8232 for (i
= 0; i
< 4; ++i
)
8233 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8243 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8252 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8253 struct gcpro gcpro1
, gcpro2
;
8255 double in_width
, in_height
;
8256 Lisp_Object pixel_colors
= Qnil
;
8258 /* Compute pixel size of pixmap needed from the given size in the
8259 image specification. Sizes in the specification are in pt. 1 pt
8260 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8262 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8263 in_width
= XFASTINT (pt_width
) / 72.0;
8264 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8265 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8266 in_height
= XFASTINT (pt_height
) / 72.0;
8267 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8269 if (!check_image_size (f
, img
->width
, img
->height
))
8271 image_error ("Invalid image size", Qnil
, Qnil
);
8275 /* Create the pixmap. */
8276 xassert (img
->pixmap
== NO_PIXMAP
);
8278 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8280 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8281 img
->width
, img
->height
,
8282 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8287 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8291 /* Call the loader to fill the pixmap. It returns a process object
8292 if successful. We do not record_unwind_protect here because
8293 other places in redisplay like calling window scroll functions
8294 don't either. Let the Lisp loader use `unwind-protect' instead. */
8295 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
8297 sprintf (buffer
, "%lu %lu",
8298 (unsigned long) FRAME_X_WINDOW (f
),
8299 (unsigned long) img
->pixmap
);
8300 window_and_pixmap_id
= build_string (buffer
);
8302 sprintf (buffer
, "%lu %lu",
8303 FRAME_FOREGROUND_PIXEL (f
),
8304 FRAME_BACKGROUND_PIXEL (f
));
8305 pixel_colors
= build_string (buffer
);
8307 XSETFRAME (frame
, f
);
8308 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8310 loader
= intern ("gs-load-image");
8312 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8313 make_number (img
->width
),
8314 make_number (img
->height
),
8315 window_and_pixmap_id
,
8318 return PROCESSP (img
->data
.lisp_val
);
8322 /* Kill the Ghostscript process that was started to fill PIXMAP on
8323 frame F. Called from XTread_socket when receiving an event
8324 telling Emacs that Ghostscript has finished drawing. */
8327 x_kill_gs_process (pixmap
, f
)
8331 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
8335 /* Find the image containing PIXMAP. */
8336 for (i
= 0; i
< c
->used
; ++i
)
8337 if (c
->images
[i
]->pixmap
== pixmap
)
8340 /* Should someone in between have cleared the image cache, for
8341 instance, give up. */
8345 /* Kill the GS process. We should have found PIXMAP in the image
8346 cache and its image should contain a process object. */
8348 xassert (PROCESSP (img
->data
.lisp_val
));
8349 Fkill_process (img
->data
.lisp_val
, Qnil
);
8350 img
->data
.lisp_val
= Qnil
;
8352 #if defined (HAVE_X_WINDOWS)
8354 /* On displays with a mutable colormap, figure out the colors
8355 allocated for the image by looking at the pixels of an XImage for
8357 class = FRAME_X_VISUAL (f
)->class;
8358 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8364 /* Try to get an XImage for img->pixmep. */
8365 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8366 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8371 /* Initialize the color table. */
8372 init_color_table ();
8374 /* For each pixel of the image, look its color up in the
8375 color table. After having done so, the color table will
8376 contain an entry for each color used by the image. */
8377 for (y
= 0; y
< img
->height
; ++y
)
8378 for (x
= 0; x
< img
->width
; ++x
)
8380 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8381 lookup_pixel_color (f
, pixel
);
8384 /* Record colors in the image. Free color table and XImage. */
8385 #ifdef COLOR_TABLE_SUPPORT
8386 img
->colors
= colors_in_color_table (&img
->ncolors
);
8387 free_color_table ();
8389 XDestroyImage (ximg
);
8391 #if 0 /* This doesn't seem to be the case. If we free the colors
8392 here, we get a BadAccess later in x_clear_image when
8393 freeing the colors. */
8394 /* We have allocated colors once, but Ghostscript has also
8395 allocated colors on behalf of us. So, to get the
8396 reference counts right, free them once. */
8398 x_free_colors (f
, img
->colors
, img
->ncolors
);
8402 image_error ("Cannot get X image of `%s'; colors will not be freed",
8407 #endif /* HAVE_X_WINDOWS */
8409 /* Now that we have the pixmap, compute mask and transform the
8410 image if requested. */
8412 postprocess_image (f
, img
);
8416 #endif /* HAVE_GHOSTSCRIPT */
8419 /***********************************************************************
8421 ***********************************************************************/
8425 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8426 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8430 return valid_image_p (spec
) ? Qt
: Qnil
;
8434 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8440 if (valid_image_p (spec
))
8441 id
= lookup_image (SELECTED_FRAME (), spec
);
8444 return make_number (id
);
8447 #endif /* GLYPH_DEBUG != 0 */
8450 /***********************************************************************
8452 ***********************************************************************/
8455 /* Image types that rely on external libraries are loaded dynamically
8456 if the library is available. */
8457 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8458 define_image_type (image_type, init_lib_fn (libraries))
8460 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8461 define_image_type (image_type, 1)
8462 #endif /* HAVE_NTGUI */
8464 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8465 doc
: /* Initialize image library implementing image type TYPE.
8466 Return non-nil if TYPE is a supported image type.
8468 Image types pbm and xbm are prebuilt; other types are loaded here.
8469 Libraries to load are specified in alist LIBRARIES (usually, the value
8470 of `image-library-alist', which see). */)
8472 Lisp_Object type
, libraries
;
8476 /* Don't try to reload the library. */
8477 tested
= Fassq (type
, Vimage_type_cache
);
8479 return XCDR (tested
);
8481 #if defined (HAVE_XPM) || defined (MAC_OS)
8482 if (EQ (type
, Qxpm
))
8483 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8486 #if defined (HAVE_JPEG) || defined (MAC_OS)
8487 if (EQ (type
, Qjpeg
))
8488 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8491 #if defined (HAVE_TIFF) || defined (MAC_OS)
8492 if (EQ (type
, Qtiff
))
8493 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8496 #if defined (HAVE_GIF) || defined (MAC_OS)
8497 if (EQ (type
, Qgif
))
8498 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8501 #if defined (HAVE_PNG) || defined (MAC_OS)
8502 if (EQ (type
, Qpng
))
8503 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8506 #ifdef HAVE_GHOSTSCRIPT
8507 if (EQ (type
, Qpostscript
))
8508 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8511 /* If the type is not recognized, avoid testing it ever again. */
8512 CACHE_IMAGE_TYPE (type
, Qnil
);
8519 extern Lisp_Object Qrisky_local_variable
; /* Syms_of_xdisp has already run. */
8521 /* Initialize this only once, since that's what we do with Vimage_types
8522 and they are supposed to be in sync. Initializing here gives correct
8523 operation on GNU/Linux of calling dump-emacs after loading some images. */
8526 /* Must be defined now becase we're going to update it below, while
8527 defining the supported image types. */
8528 DEFVAR_LISP ("image-types", &Vimage_types
,
8529 doc
: /* List of potentially supported image types.
8530 Each element of the list is a symbol for a image type, like 'jpeg or 'png.
8531 To check whether it is really supported, use `image-type-available-p'. */);
8532 Vimage_types
= Qnil
;
8534 DEFVAR_LISP ("image-library-alist", &Vimage_library_alist
,
8535 doc
: /* Alist of image types vs external libraries needed to display them.
8537 Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol
8538 representing a supported image type, and the rest are strings giving
8539 alternate filenames for the corresponding external libraries.
8541 Emacs tries to load the libraries in the order they appear on the
8542 list; if none is loaded, the running session of Emacs won't
8543 support the image type. Types 'pbm and 'xbm don't need to be
8544 listed; they're always supported. */);
8545 Vimage_library_alist
= Qnil
;
8546 Fput (intern ("image-library-alist"), Qrisky_local_variable
, Qt
);
8548 DEFVAR_LISP ("max-image-size", &Vmax_image_size
,
8549 doc
: /* Maximum size of images.
8550 Emacs will not load an image into memory if its pixel width or
8551 pixel height exceeds this limit.
8553 If the value is an integer, it directly specifies the maximum
8554 image height and width, measured in pixels. If it is a floating
8555 point number, it specifies the maximum image height and width
8556 as a ratio to the frame height and width. If the value is
8557 non-numeric, there is no explicit limit on the size of images. */);
8558 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8560 Vimage_type_cache
= Qnil
;
8561 staticpro (&Vimage_type_cache
);
8563 Qpbm
= intern ("pbm");
8565 ADD_IMAGE_TYPE(Qpbm
);
8567 Qxbm
= intern ("xbm");
8569 ADD_IMAGE_TYPE(Qxbm
);
8571 define_image_type (&xbm_type
, 1);
8572 define_image_type (&pbm_type
, 1);
8574 QCascent
= intern (":ascent");
8575 staticpro (&QCascent
);
8576 QCmargin
= intern (":margin");
8577 staticpro (&QCmargin
);
8578 QCrelief
= intern (":relief");
8579 staticpro (&QCrelief
);
8580 QCconversion
= intern (":conversion");
8581 staticpro (&QCconversion
);
8582 QCcolor_symbols
= intern (":color-symbols");
8583 staticpro (&QCcolor_symbols
);
8584 QCheuristic_mask
= intern (":heuristic-mask");
8585 staticpro (&QCheuristic_mask
);
8586 QCindex
= intern (":index");
8587 staticpro (&QCindex
);
8588 QCmatrix
= intern (":matrix");
8589 staticpro (&QCmatrix
);
8590 QCcolor_adjustment
= intern (":color-adjustment");
8591 staticpro (&QCcolor_adjustment
);
8592 QCmask
= intern (":mask");
8593 staticpro (&QCmask
);
8595 Qlaplace
= intern ("laplace");
8596 staticpro (&Qlaplace
);
8597 Qemboss
= intern ("emboss");
8598 staticpro (&Qemboss
);
8599 Qedge_detection
= intern ("edge-detection");
8600 staticpro (&Qedge_detection
);
8601 Qheuristic
= intern ("heuristic");
8602 staticpro (&Qheuristic
);
8604 Qpostscript
= intern ("postscript");
8605 staticpro (&Qpostscript
);
8606 #ifdef HAVE_GHOSTSCRIPT
8607 ADD_IMAGE_TYPE(Qpostscript
);
8608 QCloader
= intern (":loader");
8609 staticpro (&QCloader
);
8610 QCbounding_box
= intern (":bounding-box");
8611 staticpro (&QCbounding_box
);
8612 QCpt_width
= intern (":pt-width");
8613 staticpro (&QCpt_width
);
8614 QCpt_height
= intern (":pt-height");
8615 staticpro (&QCpt_height
);
8616 #endif /* HAVE_GHOSTSCRIPT */
8618 #if defined (HAVE_XPM) || defined (MAC_OS)
8619 Qxpm
= intern ("xpm");
8621 ADD_IMAGE_TYPE(Qxpm
);
8624 #if defined (HAVE_JPEG) || defined (MAC_OS)
8625 Qjpeg
= intern ("jpeg");
8627 ADD_IMAGE_TYPE(Qjpeg
);
8630 #if defined (HAVE_TIFF) || defined (MAC_OS)
8631 Qtiff
= intern ("tiff");
8633 ADD_IMAGE_TYPE(Qtiff
);
8636 #if defined (HAVE_GIF) || defined (MAC_OS)
8637 Qgif
= intern ("gif");
8639 ADD_IMAGE_TYPE(Qgif
);
8642 #if defined (HAVE_PNG) || defined (MAC_OS)
8643 Qpng
= intern ("png");
8645 ADD_IMAGE_TYPE(Qpng
);
8648 defsubr (&Sinit_image_library
);
8649 defsubr (&Sclear_image_cache
);
8650 defsubr (&Simage_size
);
8651 defsubr (&Simage_mask_p
);
8652 defsubr (&Simage_extension_data
);
8656 defsubr (&Slookup_image
);
8659 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8660 doc
: /* Non-nil means always draw a cross over disabled images.
8661 Disabled images are those having an `:conversion disabled' property.
8662 A cross is always drawn on black & white displays. */);
8663 cross_disabled_images
= 0;
8665 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8666 doc
: /* List of directories to search for window system bitmap files. */);
8667 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8669 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8670 doc
: /* Time after which cached images are removed from the cache.
8671 When an image has not been displayed this many seconds, remove it
8672 from the image cache. Value must be an integer or nil with nil
8673 meaning don't clear the cache. */);
8674 Vimage_cache_eviction_delay
= make_number (30 * 60);
8680 #if defined (MAC_OSX) && TARGET_API_MAC_CARBON
8681 init_image_func_pointer ();
8685 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8686 (do not change this comment) */