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 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)
125 #define XDrawLine(display, w, gc, x1, y1, x2, y2) \
126 mac_draw_line_to_pixmap(display, w, gc, x1, y1, x2, y2)
131 /* Search path for bitmap files. */
133 Lisp_Object Vx_bitmap_file_path
;
136 static void x_disable_image
P_ ((struct frame
*, struct image
*));
137 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
140 static void init_color_table
P_ ((void));
141 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
142 #ifdef COLOR_TABLE_SUPPORT
143 static void free_color_table
P_ ((void));
144 static unsigned long *colors_in_color_table
P_ ((int *n
));
145 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
148 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
149 id, which is just an int that this section returns. Bitmaps are
150 reference counted so they can be shared among frames.
152 Bitmap indices are guaranteed to be > 0, so a negative number can
153 be used to indicate no bitmap.
155 If you use x_create_bitmap_from_data, then you must keep track of
156 the bitmaps yourself. That is, creating a bitmap from the same
157 data more than once will not be caught. */
162 XGetImage (display
, pixmap
, x
, y
, width
, height
, plane_mask
, format
)
163 Display
*display
; /* not used */
165 int x
, y
; /* not used */
166 unsigned int width
, height
; /* not used */
167 unsigned long plane_mask
; /* not used */
168 int format
; /* not used */
171 xassert (x
== 0 && y
== 0);
174 SetRect (&ri
, 0, 0, width
, height
);
175 xassert (EqualRect (&ri
, GetPixBounds (GetGWorldPixMap (pixmap
), &rp
)));
177 xassert (! (pixelsLocked
& GetPixelsState (GetGWorldPixMap (pixmap
))));
180 LockPixels (GetGWorldPixMap (pixmap
));
186 XPutPixel (ximage
, x
, y
, pixel
)
191 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
192 short depth
= GetPixDepth (pixmap
);
194 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
197 char *base_addr
= GetPixBaseAddr (pixmap
);
198 short row_bytes
= GetPixRowBytes (pixmap
);
200 ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] = 0xff000000 | pixel
;
206 char *base_addr
= GetPixBaseAddr (pixmap
);
207 short row_bytes
= GetPixRowBytes (pixmap
);
209 if (pixel
== PIX_MASK_DRAW
)
210 base_addr
[y
* row_bytes
+ x
/ 8] |= (1 << 7) >> (x
& 7);
212 base_addr
[y
* row_bytes
+ x
/ 8] &= ~((1 << 7) >> (x
& 7));
220 GetGWorld (&old_port
, &old_gdh
);
221 SetGWorld (ximage
, NULL
);
223 color
.red
= RED16_FROM_ULONG (pixel
);
224 color
.green
= GREEN16_FROM_ULONG (pixel
);
225 color
.blue
= BLUE16_FROM_ULONG (pixel
);
227 SetCPixel (x
, y
, &color
);
229 SetGWorld (old_port
, old_gdh
);
234 XGetPixel (ximage
, x
, y
)
238 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
239 short depth
= GetPixDepth (pixmap
);
241 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
244 char *base_addr
= GetPixBaseAddr (pixmap
);
245 short row_bytes
= GetPixRowBytes (pixmap
);
247 return ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] & 0x00ffffff;
253 char *base_addr
= GetPixBaseAddr (pixmap
);
254 short row_bytes
= GetPixRowBytes (pixmap
);
256 if (base_addr
[y
* row_bytes
+ x
/ 8] & (1 << (~x
& 7)))
257 return PIX_MASK_DRAW
;
259 return PIX_MASK_RETAIN
;
267 GetGWorld (&old_port
, &old_gdh
);
268 SetGWorld (ximage
, NULL
);
270 GetCPixel (x
, y
, &color
);
272 SetGWorld (old_port
, old_gdh
);
273 return RGB_TO_ULONG (color
.red
>> 8, color
.green
>> 8, color
.blue
>> 8);
281 UnlockPixels (GetGWorldPixMap (ximg
));
286 mac_create_cg_image_from_image (f
, img
)
291 CGImageRef result
= NULL
;
298 mask
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
299 img
->width
, img
->height
, 1);
306 GetGWorld (&old_port
, &old_gdh
);
307 SetGWorld (mask
, NULL
);
308 BackColor (blackColor
); /* Don't mask. */
309 SetRect (&r
, 0, 0, img
->width
, img
->height
);
311 SetGWorld (old_port
, old_gdh
);
316 CreateCGImageFromPixMaps (GetGWorldPixMap (img
->pixmap
),
317 GetGWorldPixMap (mask
), &result
);
318 if (mask
!= img
->mask
)
319 XFreePixmap (FRAME_X_DISPLAY (f
), mask
);
325 #endif /* USE_CG_DRAWING */
329 /* Functions to access the contents of a bitmap, given an id. */
332 x_bitmap_height (f
, id
)
336 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
340 x_bitmap_width (f
, id
)
344 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
347 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
349 x_bitmap_pixmap (f
, id
)
353 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
357 #ifdef HAVE_X_WINDOWS
359 x_bitmap_mask (f
, id
)
363 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
367 /* Allocate a new bitmap record. Returns index of new record. */
370 x_allocate_bitmap_record (f
)
373 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
376 if (dpyinfo
->bitmaps
== NULL
)
378 dpyinfo
->bitmaps_size
= 10;
380 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
381 dpyinfo
->bitmaps_last
= 1;
385 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
386 return ++dpyinfo
->bitmaps_last
;
388 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
389 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
392 dpyinfo
->bitmaps_size
*= 2;
394 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
395 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
396 return ++dpyinfo
->bitmaps_last
;
399 /* Add one reference to the reference count of the bitmap with id ID. */
402 x_reference_bitmap (f
, id
)
406 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
409 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
412 x_create_bitmap_from_data (f
, bits
, width
, height
)
415 unsigned int width
, height
;
417 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
420 #ifdef HAVE_X_WINDOWS
422 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
423 bits
, width
, height
);
426 #endif /* HAVE_X_WINDOWS */
430 bitmap
= CreateBitmap (width
, height
,
431 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
432 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
436 #endif /* HAVE_NTGUI */
439 /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */
444 id
= x_allocate_bitmap_record (f
);
446 dpyinfo
->bitmaps
[id
- 1].bitmap_data
= (char *) xmalloc (height
* width
);
447 bcopy (bits
, dpyinfo
->bitmaps
[id
- 1].bitmap_data
, height
* width
);
450 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
451 dpyinfo
->bitmaps
[id
- 1].height
= height
;
452 dpyinfo
->bitmaps
[id
- 1].width
= width
;
453 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
455 #ifdef HAVE_X_WINDOWS
456 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
457 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
458 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
459 #endif /* HAVE_X_WINDOWS */
462 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
463 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
464 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
465 #endif /* HAVE_NTGUI */
470 /* Create bitmap from file FILE for frame F. */
473 x_create_bitmap_from_file (f
, file
)
478 return -1; /* MAC_TODO : bitmap support */
482 return -1; /* W32_TODO : bitmap support */
483 #endif /* HAVE_NTGUI */
485 #ifdef HAVE_X_WINDOWS
486 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
487 unsigned int width
, height
;
489 int xhot
, yhot
, result
, id
;
494 /* Look for an existing bitmap with the same name. */
495 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
497 if (dpyinfo
->bitmaps
[id
].refcount
498 && dpyinfo
->bitmaps
[id
].file
499 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
501 ++dpyinfo
->bitmaps
[id
].refcount
;
506 /* Search bitmap-file-path for the file, if appropriate. */
507 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
512 filename
= (char *) SDATA (found
);
514 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
515 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
516 if (result
!= BitmapSuccess
)
519 id
= x_allocate_bitmap_record (f
);
520 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
521 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
522 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
523 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
524 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
525 dpyinfo
->bitmaps
[id
- 1].height
= height
;
526 dpyinfo
->bitmaps
[id
- 1].width
= width
;
527 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
530 #endif /* HAVE_X_WINDOWS */
536 Free_Bitmap_Record (dpyinfo
, bm
)
537 Display_Info
*dpyinfo
;
540 #ifdef HAVE_X_WINDOWS
541 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
543 XFreePixmap (dpyinfo
->display
, bm
->mask
);
544 #endif /* HAVE_X_WINDOWS */
547 DeleteObject (bm
->pixmap
);
548 #endif /* HAVE_NTGUI */
551 xfree (bm
->bitmap_data
); /* Added ++kfs */
552 bm
->bitmap_data
= NULL
;
562 /* Remove reference to bitmap with id number ID. */
565 x_destroy_bitmap (f
, id
)
569 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
573 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
575 if (--bm
->refcount
== 0)
578 Free_Bitmap_Record (dpyinfo
, bm
);
584 /* Free all the bitmaps for the display specified by DPYINFO. */
587 x_destroy_all_bitmaps (dpyinfo
)
588 Display_Info
*dpyinfo
;
591 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
593 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
594 if (bm
->refcount
> 0)
595 Free_Bitmap_Record (dpyinfo
, bm
);
597 dpyinfo
->bitmaps_last
= 0;
601 #ifdef HAVE_X_WINDOWS
603 /* Useful functions defined in the section
604 `Image type independent image structures' below. */
606 static unsigned long four_corners_best
P_ ((XImagePtr ximg
,
609 unsigned long height
));
611 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
612 int depth
, XImagePtr
*ximg
,
615 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
618 /* Create a mask of a bitmap. Note is this not a perfect mask.
619 It's nicer with some borders in this context */
622 x_create_bitmap_mask (f
, id
)
627 XImagePtr ximg
, mask_img
;
628 unsigned long width
, height
;
631 unsigned long x
, y
, xp
, xm
, yp
, ym
;
634 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
639 pixmap
= x_bitmap_pixmap (f
, id
);
640 width
= x_bitmap_width (f
, id
);
641 height
= x_bitmap_height (f
, id
);
644 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
653 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
658 XDestroyImage (ximg
);
662 bg
= four_corners_best (ximg
, NULL
, width
, height
);
664 for (y
= 0; y
< ximg
->height
; ++y
)
666 for (x
= 0; x
< ximg
->width
; ++x
)
668 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
669 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
670 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
671 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
672 if (XGetPixel (ximg
, x
, y
) == bg
673 && XGetPixel (ximg
, x
, yp
) == bg
674 && XGetPixel (ximg
, x
, ym
) == bg
675 && XGetPixel (ximg
, xp
, y
) == bg
676 && XGetPixel (ximg
, xp
, yp
) == bg
677 && XGetPixel (ximg
, xp
, ym
) == bg
678 && XGetPixel (ximg
, xm
, y
) == bg
679 && XGetPixel (ximg
, xm
, yp
) == bg
680 && XGetPixel (ximg
, xm
, ym
) == bg
)
681 XPutPixel (mask_img
, x
, y
, 0);
683 XPutPixel (mask_img
, x
, y
, 1);
687 xassert (interrupt_input_blocked
);
688 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
689 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
691 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
693 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
694 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
696 XDestroyImage (ximg
);
697 x_destroy_x_image (mask_img
);
702 #endif /* HAVE_X_WINDOWS */
705 /***********************************************************************
707 ***********************************************************************/
709 /* Value is the number of elements of vector VECTOR. */
711 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
713 /* List of supported image types. Use define_image_type to add new
714 types. Use lookup_image_type to find a type for a given symbol. */
716 static struct image_type
*image_types
;
718 /* A list of symbols, one for each supported image type. */
720 Lisp_Object Vimage_types
;
722 /* An alist of image types and libraries that implement the type. */
724 Lisp_Object Vimage_library_alist
;
726 /* Cache for delayed-loading image types. */
728 static Lisp_Object Vimage_type_cache
;
730 /* The symbol `xbm' which is used as the type symbol for XBM images. */
736 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
737 extern Lisp_Object QCdata
, QCtype
, Qcount
;
738 extern Lisp_Object Qcenter
;
739 Lisp_Object QCascent
, QCmargin
, QCrelief
;
740 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
741 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
745 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
747 /* Time in seconds after which images should be removed from the cache
750 Lisp_Object Vimage_cache_eviction_delay
;
752 /* Function prototypes. */
754 static Lisp_Object define_image_type
P_ ((struct image_type
*type
, int loaded
));
755 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
756 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
757 static void x_laplace
P_ ((struct frame
*, struct image
*));
758 static void x_emboss
P_ ((struct frame
*, struct image
*));
759 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
762 #define CACHE_IMAGE_TYPE(type, status) \
763 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
765 #define ADD_IMAGE_TYPE(type) \
766 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
768 /* Define a new image type from TYPE. This adds a copy of TYPE to
769 image_types and caches the loading status of TYPE. */
772 define_image_type (type
, loaded
)
773 struct image_type
*type
;
782 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
783 The initialized data segment is read-only. */
784 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
785 bcopy (type
, p
, sizeof *p
);
786 p
->next
= image_types
;
791 CACHE_IMAGE_TYPE (*type
->type
, success
);
796 /* Look up image type SYMBOL, and return a pointer to its image_type
797 structure. Value is null if SYMBOL is not a known image type. */
799 static INLINE
struct image_type
*
800 lookup_image_type (symbol
)
803 struct image_type
*type
;
805 /* We must initialize the image-type if it hasn't been already. */
806 if (NILP (Finit_image_library (symbol
, Vimage_library_alist
)))
807 return 0; /* unimplemented */
809 for (type
= image_types
; type
; type
= type
->next
)
810 if (EQ (symbol
, *type
->type
))
817 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
818 valid image specification is a list whose car is the symbol
819 `image', and whose rest is a property list. The property list must
820 contain a value for key `:type'. That value must be the name of a
821 supported image type. The rest of the property list depends on the
825 valid_image_p (object
)
834 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
835 if (EQ (XCAR (tem
), QCtype
))
838 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
840 struct image_type
*type
;
841 type
= lookup_image_type (XCAR (tem
));
843 valid_p
= type
->valid_p (object
);
854 /* Log error message with format string FORMAT and argument ARG.
855 Signaling an error, e.g. when an image cannot be loaded, is not a
856 good idea because this would interrupt redisplay, and the error
857 message display would lead to another redisplay. This function
858 therefore simply displays a message. */
861 image_error (format
, arg1
, arg2
)
863 Lisp_Object arg1
, arg2
;
865 add_to_log (format
, arg1
, arg2
);
870 /***********************************************************************
872 ***********************************************************************/
874 enum image_value_type
876 IMAGE_DONT_CHECK_VALUE_TYPE
,
878 IMAGE_STRING_OR_NIL_VALUE
,
880 IMAGE_POSITIVE_INTEGER_VALUE
,
881 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
882 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
885 IMAGE_FUNCTION_VALUE
,
890 /* Structure used when parsing image specifications. */
894 /* Name of keyword. */
897 /* The type of value allowed. */
898 enum image_value_type type
;
900 /* Non-zero means key must be present. */
903 /* Used to recognize duplicate keywords in a property list. */
906 /* The value that was found. */
911 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
913 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
916 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
917 has the format (image KEYWORD VALUE ...). One of the keyword/
918 value pairs must be `:type TYPE'. KEYWORDS is a vector of
919 image_keywords structures of size NKEYWORDS describing other
920 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
923 parse_image_spec (spec
, keywords
, nkeywords
, type
)
925 struct image_keyword
*keywords
;
936 while (CONSP (plist
))
938 Lisp_Object key
, value
;
940 /* First element of a pair must be a symbol. */
942 plist
= XCDR (plist
);
946 /* There must follow a value. */
949 value
= XCAR (plist
);
950 plist
= XCDR (plist
);
952 /* Find key in KEYWORDS. Error if not found. */
953 for (i
= 0; i
< nkeywords
; ++i
)
954 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
960 /* Record that we recognized the keyword. If a keywords
961 was found more than once, it's an error. */
962 keywords
[i
].value
= value
;
965 if (keywords
[i
].count
> 1)
968 /* Check type of value against allowed type. */
969 switch (keywords
[i
].type
)
971 case IMAGE_STRING_VALUE
:
972 if (!STRINGP (value
))
976 case IMAGE_STRING_OR_NIL_VALUE
:
977 if (!STRINGP (value
) && !NILP (value
))
981 case IMAGE_SYMBOL_VALUE
:
982 if (!SYMBOLP (value
))
986 case IMAGE_POSITIVE_INTEGER_VALUE
:
987 if (!INTEGERP (value
) || XINT (value
) <= 0)
991 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
992 if (INTEGERP (value
) && XINT (value
) >= 0)
995 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
996 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
1000 case IMAGE_ASCENT_VALUE
:
1001 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
1003 else if (INTEGERP (value
)
1004 && XINT (value
) >= 0
1005 && XINT (value
) <= 100)
1009 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
1010 if (!INTEGERP (value
) || XINT (value
) < 0)
1014 case IMAGE_DONT_CHECK_VALUE_TYPE
:
1017 case IMAGE_FUNCTION_VALUE
:
1018 value
= indirect_function (value
);
1020 || COMPILEDP (value
)
1021 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
1025 case IMAGE_NUMBER_VALUE
:
1026 if (!INTEGERP (value
) && !FLOATP (value
))
1030 case IMAGE_INTEGER_VALUE
:
1031 if (!INTEGERP (value
))
1035 case IMAGE_BOOL_VALUE
:
1036 if (!NILP (value
) && !EQ (value
, Qt
))
1045 if (EQ (key
, QCtype
) && !EQ (type
, value
))
1049 /* Check that all mandatory fields are present. */
1050 for (i
= 0; i
< nkeywords
; ++i
)
1051 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
1054 return NILP (plist
);
1058 /* Return the value of KEY in image specification SPEC. Value is nil
1059 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
1060 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
1063 image_spec_value (spec
, key
, found
)
1064 Lisp_Object spec
, key
;
1069 xassert (valid_image_p (spec
));
1071 for (tail
= XCDR (spec
);
1072 CONSP (tail
) && CONSP (XCDR (tail
));
1073 tail
= XCDR (XCDR (tail
)))
1075 if (EQ (XCAR (tail
), key
))
1079 return XCAR (XCDR (tail
));
1089 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
1090 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
1091 PIXELS non-nil means return the size in pixels, otherwise return the
1092 size in canonical character units.
1093 FRAME is the frame on which the image will be displayed. FRAME nil
1094 or omitted means use the selected frame. */)
1095 (spec
, pixels
, frame
)
1096 Lisp_Object spec
, pixels
, frame
;
1101 if (valid_image_p (spec
))
1103 struct frame
*f
= check_x_frame (frame
);
1104 int id
= lookup_image (f
, spec
);
1105 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1106 int width
= img
->width
+ 2 * img
->hmargin
;
1107 int height
= img
->height
+ 2 * img
->vmargin
;
1110 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
1111 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
1113 size
= Fcons (make_number (width
), make_number (height
));
1116 error ("Invalid image specification");
1122 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
1123 doc
: /* Return t if image SPEC has a mask bitmap.
1124 FRAME is the frame on which the image will be displayed. FRAME nil
1125 or omitted means use the selected frame. */)
1127 Lisp_Object spec
, frame
;
1132 if (valid_image_p (spec
))
1134 struct frame
*f
= check_x_frame (frame
);
1135 int id
= lookup_image (f
, spec
);
1136 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1141 error ("Invalid image specification");
1146 DEFUN ("image-extension-data", Fimage_extension_data
, Simage_extension_data
, 1, 2, 0,
1147 doc
: /* Return extension data for image SPEC.
1148 FRAME is the frame on which the image will be displayed. FRAME nil
1149 or omitted means use the selected frame. */)
1151 Lisp_Object spec
, frame
;
1156 if (valid_image_p (spec
))
1158 struct frame
*f
= check_x_frame (frame
);
1159 int id
= lookup_image (f
, spec
);
1160 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1161 ext
= img
->data
.lisp_val
;
1168 /***********************************************************************
1169 Image type independent image structures
1170 ***********************************************************************/
1172 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1173 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1174 static int check_image_size
P_ ((struct frame
*f
, int width
, int height
));
1176 #define MAX_IMAGE_SIZE 6.0
1177 Lisp_Object Vmax_image_size
;
1179 /* Allocate and return a new image structure for image specification
1180 SPEC. SPEC has a hash value of HASH. */
1182 static struct image
*
1183 make_image (spec
, hash
)
1187 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1189 xassert (valid_image_p (spec
));
1190 bzero (img
, sizeof *img
);
1191 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1192 xassert (img
->type
!= NULL
);
1194 img
->data
.lisp_val
= Qnil
;
1195 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1197 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1202 /* Free image IMG which was used on frame F, including its resources. */
1211 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1213 /* Remove IMG from the hash table of its cache. */
1215 img
->prev
->next
= img
->next
;
1217 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1220 img
->next
->prev
= img
->prev
;
1222 c
->images
[img
->id
] = NULL
;
1224 /* Free resources, then free IMG. */
1225 img
->type
->free (f
, img
);
1230 /* Return 1 if the given widths and heights are valid for display;
1231 otherwise, return 0. */
1234 check_image_size (f
, width
, height
)
1241 if (width
<= 0 || height
<= 0)
1244 if (INTEGERP (Vmax_image_size
))
1245 w
= h
= XINT (Vmax_image_size
);
1246 else if (FLOATP (Vmax_image_size
))
1250 w
= FRAME_PIXEL_WIDTH (f
);
1251 h
= FRAME_PIXEL_HEIGHT (f
);
1254 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1255 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1256 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1261 return (width
<= w
&& height
<= h
);
1264 /* Prepare image IMG for display on frame F. Must be called before
1265 drawing an image. */
1268 prepare_image_for_display (f
, img
)
1274 /* We're about to display IMG, so set its timestamp to `now'. */
1276 img
->timestamp
= EMACS_SECS (t
);
1278 /* If IMG doesn't have a pixmap yet, load it now, using the image
1279 type dependent loader function. */
1280 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1281 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1283 #if defined (MAC_OS) && USE_CG_DRAWING
1284 if (!img
->load_failed_p
&& img
->data
.ptr_val
== NULL
)
1286 img
->data
.ptr_val
= mac_create_cg_image_from_image (f
, img
);
1287 if (img
->data
.ptr_val
== NULL
)
1289 img
->load_failed_p
= 1;
1290 img
->type
->free (f
, img
);
1297 /* Value is the number of pixels for the ascent of image IMG when
1298 drawn in face FACE. */
1301 image_ascent (img
, face
, slice
)
1304 struct glyph_slice
*slice
;
1309 if (slice
->height
== img
->height
)
1310 height
= img
->height
+ img
->vmargin
;
1311 else if (slice
->y
== 0)
1312 height
= slice
->height
+ img
->vmargin
;
1314 height
= slice
->height
;
1316 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1321 /* W32 specific version. Why?. ++kfs */
1322 ascent
= height
/ 2 - (FONT_DESCENT(face
->font
)
1323 - FONT_BASE(face
->font
)) / 2;
1325 /* This expression is arranged so that if the image can't be
1326 exactly centered, it will be moved slightly up. This is
1327 because a typical font is `top-heavy' (due to the presence
1328 uppercase letters), so the image placement should err towards
1329 being top-heavy too. It also just generally looks better. */
1330 ascent
= (height
+ face
->font
->ascent
- face
->font
->descent
+ 1) / 2;
1331 #endif /* HAVE_NTGUI */
1334 ascent
= height
/ 2;
1337 ascent
= (int) (height
* img
->ascent
/ 100.0);
1343 /* Image background colors. */
1345 /* Find the "best" corner color of a bitmap.
1346 On W32, XIMG is assumed to a device context with the bitmap selected. */
1348 static RGB_PIXEL_COLOR
1349 four_corners_best (ximg
, corners
, width
, height
)
1350 XImagePtr_or_DC ximg
;
1352 unsigned long width
, height
;
1354 RGB_PIXEL_COLOR corner_pixels
[4], best
;
1357 if (corners
&& corners
[BOT_CORNER
] >= 0)
1359 /* Get the colors at the corner_pixels of ximg. */
1360 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1361 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1362 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1363 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1367 /* Get the colors at the corner_pixels of ximg. */
1368 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1369 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1370 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1371 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1373 /* Choose the most frequently found color as background. */
1374 for (i
= best_count
= 0; i
< 4; ++i
)
1378 for (j
= n
= 0; j
< 4; ++j
)
1379 if (corner_pixels
[i
] == corner_pixels
[j
])
1383 best
= corner_pixels
[i
], best_count
= n
;
1389 /* Portability macros */
1393 #define Destroy_Image(img_dc, prev) \
1394 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1396 #define Free_Pixmap(display, pixmap) \
1397 DeleteObject (pixmap)
1401 #define Destroy_Image(ximg, dummy) \
1402 XDestroyImage (ximg)
1404 #define Free_Pixmap(display, pixmap) \
1405 XFreePixmap (display, pixmap)
1407 #endif /* HAVE_NTGUI */
1410 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1411 it is guessed heuristically. If non-zero, XIMG is an existing
1412 XImage object (or device context with the image selected on W32) to
1413 use for the heuristic. */
1416 image_background (img
, f
, ximg
)
1419 XImagePtr_or_DC ximg
;
1421 if (! img
->background_valid
)
1422 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1424 int free_ximg
= !ximg
;
1427 #endif /* HAVE_NTGUI */
1432 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1433 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1435 HDC frame_dc
= get_frame_dc (f
);
1436 ximg
= CreateCompatibleDC (frame_dc
);
1437 release_frame_dc (f
, frame_dc
);
1438 prev
= SelectObject (ximg
, img
->pixmap
);
1439 #endif /* !HAVE_NTGUI */
1442 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1445 Destroy_Image (ximg
, prev
);
1447 img
->background_valid
= 1;
1450 return img
->background
;
1453 /* Return the `background_transparent' field of IMG. If IMG doesn't
1454 have one yet, it is guessed heuristically. If non-zero, MASK is an
1455 existing XImage object to use for the heuristic. */
1458 image_background_transparent (img
, f
, mask
)
1461 XImagePtr_or_DC mask
;
1463 if (! img
->background_transparent_valid
)
1464 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1468 int free_mask
= !mask
;
1471 #endif /* HAVE_NTGUI */
1476 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1477 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1479 HDC frame_dc
= get_frame_dc (f
);
1480 mask
= CreateCompatibleDC (frame_dc
);
1481 release_frame_dc (f
, frame_dc
);
1482 prev
= SelectObject (mask
, img
->mask
);
1483 #endif /* HAVE_NTGUI */
1486 img
->background_transparent
1487 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1490 Destroy_Image (mask
, prev
);
1493 img
->background_transparent
= 0;
1495 img
->background_transparent_valid
= 1;
1498 return img
->background_transparent
;
1502 /***********************************************************************
1503 Helper functions for X image types
1504 ***********************************************************************/
1506 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1508 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1509 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1511 Lisp_Object color_name
,
1512 unsigned long dflt
));
1515 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1516 free the pixmap if any. MASK_P non-zero means clear the mask
1517 pixmap if any. COLORS_P non-zero means free colors allocated for
1518 the image, if any. */
1521 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1524 int pixmap_p
, mask_p
, colors_p
;
1526 if (pixmap_p
&& img
->pixmap
)
1528 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1529 img
->pixmap
= NO_PIXMAP
;
1530 img
->background_valid
= 0;
1533 if (mask_p
&& img
->mask
)
1535 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1536 img
->mask
= NO_PIXMAP
;
1537 img
->background_transparent_valid
= 0;
1540 if (colors_p
&& img
->ncolors
)
1542 /* MAC_TODO: color table support. */
1543 /* W32_TODO: color table support. */
1544 #ifdef HAVE_X_WINDOWS
1545 x_free_colors (f
, img
->colors
, img
->ncolors
);
1546 #endif /* HAVE_X_WINDOWS */
1547 xfree (img
->colors
);
1552 #if defined (MAC_OS) && USE_CG_DRAWING
1553 if (img
->data
.ptr_val
)
1555 CGImageRelease (img
->data
.ptr_val
);
1556 img
->data
.ptr_val
= NULL
;
1561 /* Free X resources of image IMG which is used on frame F. */
1564 x_clear_image (f
, img
)
1569 x_clear_image_1 (f
, img
, 1, 1, 1);
1574 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1575 cannot be allocated, use DFLT. Add a newly allocated color to
1576 IMG->colors, so that it can be freed again. Value is the pixel
1579 static unsigned long
1580 x_alloc_image_color (f
, img
, color_name
, dflt
)
1583 Lisp_Object color_name
;
1587 unsigned long result
;
1589 xassert (STRINGP (color_name
));
1591 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1593 /* This isn't called frequently so we get away with simply
1594 reallocating the color vector to the needed size, here. */
1597 (unsigned long *) xrealloc (img
->colors
,
1598 img
->ncolors
* sizeof *img
->colors
);
1599 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1600 result
= color
.pixel
;
1610 /***********************************************************************
1612 ***********************************************************************/
1614 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1615 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1617 /* Return a new, initialized image cache that is allocated from the
1618 heap. Call free_image_cache to free an image cache. */
1620 struct image_cache
*
1623 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1626 bzero (c
, sizeof *c
);
1628 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1629 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1630 c
->buckets
= (struct image
**) xmalloc (size
);
1631 bzero (c
->buckets
, size
);
1636 /* Free image cache of frame F. Be aware that X frames share images
1640 free_image_cache (f
)
1643 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1648 /* Cache should not be referenced by any frame when freed. */
1649 xassert (c
->refcount
== 0);
1651 for (i
= 0; i
< c
->used
; ++i
)
1652 free_image (f
, c
->images
[i
]);
1656 FRAME_X_IMAGE_CACHE (f
) = NULL
;
1661 /* Clear image cache of frame F. FORCE_P non-zero means free all
1662 images. FORCE_P zero means clear only images that haven't been
1663 displayed for some time. Should be called from time to time to
1664 reduce the number of loaded images. If image-eviction-seconds is
1665 non-nil, this frees images in the cache which weren't displayed for
1666 at least that many seconds. */
1669 clear_image_cache (f
, force_p
)
1673 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1675 if (c
&& INTEGERP (Vimage_cache_eviction_delay
))
1682 old
= EMACS_SECS (t
) - XFASTINT (Vimage_cache_eviction_delay
);
1684 /* Block input so that we won't be interrupted by a SIGIO
1685 while being in an inconsistent state. */
1688 for (i
= nfreed
= 0; i
< c
->used
; ++i
)
1690 struct image
*img
= c
->images
[i
];
1692 && (force_p
|| img
->timestamp
< old
))
1694 free_image (f
, img
);
1699 /* We may be clearing the image cache because, for example,
1700 Emacs was iconified for a longer period of time. In that
1701 case, current matrices may still contain references to
1702 images freed above. So, clear these matrices. */
1705 Lisp_Object tail
, frame
;
1707 FOR_EACH_FRAME (tail
, frame
)
1709 struct frame
*f
= XFRAME (frame
);
1710 if (FRAME_WINDOW_P (f
)
1711 && FRAME_X_IMAGE_CACHE (f
) == c
)
1712 clear_current_matrices (f
);
1715 ++windows_or_buffers_changed
;
1723 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1725 doc
: /* Clear the image cache of FRAME.
1726 FRAME nil or omitted means use the selected frame.
1727 FRAME t means clear the image caches of all frames. */)
1735 FOR_EACH_FRAME (tail
, frame
)
1736 if (FRAME_WINDOW_P (XFRAME (frame
)))
1737 clear_image_cache (XFRAME (frame
), 1);
1740 clear_image_cache (check_x_frame (frame
), 1);
1746 /* Compute masks and transform image IMG on frame F, as specified
1747 by the image's specification, */
1750 postprocess_image (f
, img
)
1754 /* Manipulation of the image's mask. */
1757 Lisp_Object conversion
, spec
;
1762 /* `:heuristic-mask t'
1764 means build a mask heuristically.
1765 `:heuristic-mask (R G B)'
1766 `:mask (heuristic (R G B))'
1767 means build a mask from color (R G B) in the
1770 means remove a mask, if any. */
1772 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1774 x_build_heuristic_mask (f
, img
, mask
);
1779 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1781 if (EQ (mask
, Qheuristic
))
1782 x_build_heuristic_mask (f
, img
, Qt
);
1783 else if (CONSP (mask
)
1784 && EQ (XCAR (mask
), Qheuristic
))
1786 if (CONSP (XCDR (mask
)))
1787 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1789 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1791 else if (NILP (mask
) && found_p
&& img
->mask
)
1793 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1794 img
->mask
= NO_PIXMAP
;
1799 /* Should we apply an image transformation algorithm? */
1800 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1801 if (EQ (conversion
, Qdisabled
))
1802 x_disable_image (f
, img
);
1803 else if (EQ (conversion
, Qlaplace
))
1805 else if (EQ (conversion
, Qemboss
))
1807 else if (CONSP (conversion
)
1808 && EQ (XCAR (conversion
), Qedge_detection
))
1811 tem
= XCDR (conversion
);
1813 x_edge_detection (f
, img
,
1814 Fplist_get (tem
, QCmatrix
),
1815 Fplist_get (tem
, QCcolor_adjustment
));
1821 /* Return the id of image with Lisp specification SPEC on frame F.
1822 SPEC must be a valid Lisp image specification (see valid_image_p). */
1825 lookup_image (f
, spec
)
1829 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1833 struct gcpro gcpro1
;
1836 /* F must be a window-system frame, and SPEC must be a valid image
1838 xassert (FRAME_WINDOW_P (f
));
1839 xassert (valid_image_p (spec
));
1843 /* Look up SPEC in the hash table of the image cache. */
1844 hash
= sxhash (spec
, 0);
1845 i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1847 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1848 if (img
->hash
== hash
&& !NILP (Fequal (img
->spec
, spec
)))
1851 if (img
&& img
->load_failed_p
)
1853 free_image (f
, img
);
1857 /* If not found, create a new image and cache it. */
1860 extern Lisp_Object Qpostscript
;
1863 img
= make_image (spec
, hash
);
1864 cache_image (f
, img
);
1865 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1867 /* If we can't load the image, and we don't have a width and
1868 height, use some arbitrary width and height so that we can
1869 draw a rectangle for it. */
1870 if (img
->load_failed_p
)
1874 value
= image_spec_value (spec
, QCwidth
, NULL
);
1875 img
->width
= (INTEGERP (value
)
1876 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1877 value
= image_spec_value (spec
, QCheight
, NULL
);
1878 img
->height
= (INTEGERP (value
)
1879 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1883 /* Handle image type independent image attributes
1884 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1885 `:background COLOR'. */
1886 Lisp_Object ascent
, margin
, relief
, bg
;
1888 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1889 if (INTEGERP (ascent
))
1890 img
->ascent
= XFASTINT (ascent
);
1891 else if (EQ (ascent
, Qcenter
))
1892 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1894 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1895 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1896 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1897 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1898 && INTEGERP (XCDR (margin
)))
1900 if (XINT (XCAR (margin
)) > 0)
1901 img
->hmargin
= XFASTINT (XCAR (margin
));
1902 if (XINT (XCDR (margin
)) > 0)
1903 img
->vmargin
= XFASTINT (XCDR (margin
));
1906 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1907 if (INTEGERP (relief
))
1909 img
->relief
= XINT (relief
);
1910 img
->hmargin
+= abs (img
->relief
);
1911 img
->vmargin
+= abs (img
->relief
);
1914 if (! img
->background_valid
)
1916 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1920 = x_alloc_image_color (f
, img
, bg
,
1921 FRAME_BACKGROUND_PIXEL (f
));
1922 img
->background_valid
= 1;
1926 /* Do image transformations and compute masks, unless we
1927 don't have the image yet. */
1928 if (!EQ (*img
->type
->type
, Qpostscript
))
1929 postprocess_image (f
, img
);
1935 /* We're using IMG, so set its timestamp to `now'. */
1936 EMACS_GET_TIME (now
);
1937 img
->timestamp
= EMACS_SECS (now
);
1941 /* Value is the image id. */
1946 /* Cache image IMG in the image cache of frame F. */
1949 cache_image (f
, img
)
1953 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1956 /* Find a free slot in c->images. */
1957 for (i
= 0; i
< c
->used
; ++i
)
1958 if (c
->images
[i
] == NULL
)
1961 /* If no free slot found, maybe enlarge c->images. */
1962 if (i
== c
->used
&& c
->used
== c
->size
)
1965 c
->images
= (struct image
**) xrealloc (c
->images
,
1966 c
->size
* sizeof *c
->images
);
1969 /* Add IMG to c->images, and assign IMG an id. */
1975 /* Add IMG to the cache's hash table. */
1976 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1977 img
->next
= c
->buckets
[i
];
1979 img
->next
->prev
= img
;
1981 c
->buckets
[i
] = img
;
1985 /* Call FN on every image in the image cache of frame F. Used to mark
1986 Lisp Objects in the image cache. */
1989 forall_images_in_image_cache (f
, fn
)
1991 void (*fn
) P_ ((struct image
*img
));
1993 if (FRAME_LIVE_P (f
) && FRAME_WINDOW_P (f
))
1995 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1999 for (i
= 0; i
< c
->used
; ++i
)
2008 /***********************************************************************
2009 X / MAC / W32 support code
2010 ***********************************************************************/
2014 /* Macro for defining functions that will be loaded from image DLLs. */
2015 #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)()
2017 /* Macro for loading those image functions from the library. */
2018 #define LOAD_IMGLIB_FN(lib,func) { \
2019 fn_##func = (void *) GetProcAddress (lib, #func); \
2020 if (!fn_##func) return 0; \
2023 /* Load a DLL implementing an image type.
2024 The `image-library-alist' variable associates a symbol,
2025 identifying an image type, to a list of possible filenames.
2026 The function returns NULL if no library could be loaded for
2027 the given image type, or if the library was previously loaded;
2028 else the handle of the DLL. */
2030 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
2032 HMODULE library
= NULL
;
2034 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
2036 Lisp_Object dlls
= Fassq (type
, libraries
);
2039 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
2041 CHECK_STRING_CAR (dlls
);
2042 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
2050 #endif /* HAVE_NTGUI */
2052 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
2053 XImagePtr
*, Pixmap
*));
2054 static void x_destroy_x_image
P_ ((XImagePtr
));
2055 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
2058 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
2059 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
2060 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
2061 via xmalloc. Print error messages via image_error if an error
2062 occurs. Value is non-zero if successful.
2064 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
2065 should indicate the bit depth of the image. */
2068 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
2070 int width
, height
, depth
;
2074 #ifdef HAVE_X_WINDOWS
2075 Display
*display
= FRAME_X_DISPLAY (f
);
2076 Window window
= FRAME_X_WINDOW (f
);
2077 Screen
*screen
= FRAME_X_SCREEN (f
);
2079 xassert (interrupt_input_blocked
);
2082 depth
= DefaultDepthOfScreen (screen
);
2083 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
2084 depth
, ZPixmap
, 0, NULL
, width
, height
,
2085 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
2088 image_error ("Unable to allocate X image", Qnil
, Qnil
);
2092 /* Allocate image raster. */
2093 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
2095 /* Allocate a pixmap of the same size. */
2096 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2097 if (*pixmap
== NO_PIXMAP
)
2099 x_destroy_x_image (*ximg
);
2101 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2106 #endif /* HAVE_X_WINDOWS */
2110 BITMAPINFOHEADER
*header
;
2112 int scanline_width_bits
;
2114 int palette_colors
= 0;
2119 if (depth
!= 1 && depth
!= 4 && depth
!= 8
2120 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2122 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2126 scanline_width_bits
= width
* depth
;
2127 remainder
= scanline_width_bits
% 32;
2130 scanline_width_bits
+= 32 - remainder
;
2132 /* Bitmaps with a depth less than 16 need a palette. */
2133 /* BITMAPINFO structure already contains the first RGBQUAD. */
2135 palette_colors
= 1 << depth
- 1;
2137 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2140 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2144 header
= &((*ximg
)->info
.bmiHeader
);
2145 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
2146 header
->biSize
= sizeof (*header
);
2147 header
->biWidth
= width
;
2148 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2149 header
->biPlanes
= 1;
2150 header
->biBitCount
= depth
;
2151 header
->biCompression
= BI_RGB
;
2152 header
->biClrUsed
= palette_colors
;
2154 /* TODO: fill in palette. */
2157 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2158 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2159 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2160 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2161 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2162 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2163 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2164 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2167 hdc
= get_frame_dc (f
);
2169 /* Create a DIBSection and raster array for the bitmap,
2170 and store its handle in *pixmap. */
2171 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2172 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2173 /* casting avoids a GCC warning */
2174 (void **)&((*ximg
)->data
), NULL
, 0);
2176 /* Realize display palette and garbage all frames. */
2177 release_frame_dc (f
, hdc
);
2179 if (*pixmap
== NULL
)
2181 DWORD err
= GetLastError();
2182 Lisp_Object errcode
;
2183 /* All system errors are < 10000, so the following is safe. */
2184 XSETINT (errcode
, (int) err
);
2185 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2186 x_destroy_x_image (*ximg
);
2192 #endif /* HAVE_NTGUI */
2195 Display
*display
= FRAME_X_DISPLAY (f
);
2196 Window window
= FRAME_X_WINDOW (f
);
2198 xassert (interrupt_input_blocked
);
2200 /* Allocate a pixmap of the same size. */
2201 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2202 if (*pixmap
== NO_PIXMAP
)
2205 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2209 LockPixels (GetGWorldPixMap (*pixmap
));
2217 /* Destroy XImage XIMG. Free XIMG->data. */
2220 x_destroy_x_image (ximg
)
2223 xassert (interrupt_input_blocked
);
2226 #ifdef HAVE_X_WINDOWS
2229 XDestroyImage (ximg
);
2230 #endif /* HAVE_X_WINDOWS */
2232 /* Data will be freed by DestroyObject. */
2235 #endif /* HAVE_NTGUI */
2237 XDestroyImage (ximg
);
2243 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2244 are width and height of both the image and pixmap. */
2247 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
2253 #ifdef HAVE_X_WINDOWS
2256 xassert (interrupt_input_blocked
);
2257 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2258 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2259 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2260 #endif /* HAVE_X_WINDOWS */
2263 #if 0 /* I don't think this is necessary looking at where it is used. */
2264 HDC hdc
= get_frame_dc (f
);
2265 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2266 release_frame_dc (f
, hdc
);
2268 #endif /* HAVE_NTGUI */
2271 xassert (ximg
== pixmap
);
2276 /***********************************************************************
2278 ***********************************************************************/
2280 static unsigned char *slurp_file
P_ ((char *, int *));
2283 /* Find image file FILE. Look in data-directory, then
2284 x-bitmap-file-path. Value is the encoded full name of the file
2285 found, or nil if not found. */
2288 x_find_image_file (file
)
2291 Lisp_Object file_found
, search_path
;
2292 struct gcpro gcpro1
, gcpro2
;
2296 search_path
= Fcons (Vdata_directory
, Vx_bitmap_file_path
);
2297 GCPRO2 (file_found
, search_path
);
2299 /* Try to find FILE in data-directory, then x-bitmap-file-path. */
2300 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2306 file_found
= ENCODE_FILE (file_found
);
2315 /* Read FILE into memory. Value is a pointer to a buffer allocated
2316 with xmalloc holding FILE's contents. Value is null if an error
2317 occurred. *SIZE is set to the size of the file. */
2319 static unsigned char *
2320 slurp_file (file
, size
)
2325 unsigned char *buf
= NULL
;
2328 if (stat (file
, &st
) == 0
2329 && (fp
= fopen (file
, "rb")) != NULL
2330 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2331 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2354 /***********************************************************************
2355 MAC Image Load Functions
2356 ***********************************************************************/
2358 static int image_load_quicktime
P_ ((struct frame
*, struct image
*img
,
2361 static int image_load_quartz2d
P_ ((struct frame
*, struct image
*img
, int));
2365 find_image_fsspec (specified_file
, file
, fss
)
2366 Lisp_Object specified_file
, *file
;
2372 *file
= x_find_image_file (specified_file
);
2373 if (!STRINGP (*file
))
2374 return fnfErr
; /* file or directory not found;
2375 incomplete pathname */
2376 /* Try to open the image file. */
2377 err
= AECoercePtr (TYPE_FILE_NAME
, SDATA (*file
),
2378 SBYTES (*file
), typeFSS
, &desc
);
2381 #if TARGET_API_MAC_CARBON
2382 err
= AEGetDescData (&desc
, fss
, sizeof (FSSpec
));
2384 *fss
= *(FSSpec
*)(*(desc
.dataHandle
));
2386 AEDisposeDesc (&desc
);
2392 image_load_qt_1 (f
, img
, type
, fss
, dh
)
2399 ComponentResult err
;
2400 GraphicsImportComponent gi
;
2403 ImageDescriptionHandle desc_handle
;
2404 short draw_all_pixels
;
2405 Lisp_Object specified_bg
;
2410 err
= OpenADefaultComponent (GraphicsImporterComponentType
, type
, &gi
);
2413 image_error ("Cannot get importer component for `%s'", img
->spec
, Qnil
);
2418 /* read from file system spec */
2419 err
= GraphicsImportSetDataFile (gi
, fss
);
2422 image_error ("Cannot set fsspec to graphics importer for '%s'",
2429 /* read from data handle */
2430 err
= GraphicsImportSetDataHandle (gi
, dh
);
2433 image_error ("Cannot set data handle to graphics importer for `%s'",
2438 err
= GraphicsImportGetImageDescription (gi
, &desc_handle
);
2439 if (err
!= noErr
|| desc_handle
== NULL
)
2441 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2444 width
= img
->width
= (*desc_handle
)->width
;
2445 height
= img
->height
= (*desc_handle
)->height
;
2446 DisposeHandle ((Handle
)desc_handle
);
2448 if (!check_image_size (f
, width
, height
))
2450 image_error ("Invalid image size", Qnil
, Qnil
);
2454 err
= GraphicsImportDoesDrawAllPixels (gi
, &draw_all_pixels
);
2456 /* Don't check the error code here. It may have an undocumented
2460 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2464 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2466 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2467 if (!STRINGP (specified_bg
) ||
2468 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2470 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2471 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2472 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2473 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2477 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2479 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2484 GetGWorld (&old_port
, &old_gdh
);
2485 SetGWorld (ximg
, NULL
);
2486 bg_color
.red
= color
.red
;
2487 bg_color
.green
= color
.green
;
2488 bg_color
.blue
= color
.blue
;
2489 RGBBackColor (&bg_color
);
2490 #if TARGET_API_MAC_CARBON
2491 GetPortBounds (ximg
, &rect
);
2494 EraseRect (&(ximg
->portRect
));
2496 SetGWorld (old_port
, old_gdh
);
2498 GraphicsImportSetGWorld (gi
, ximg
, NULL
);
2499 GraphicsImportDraw (gi
);
2500 CloseComponent (gi
);
2502 /* Maybe fill in the background field while we have ximg handy. */
2503 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2504 IMAGE_BACKGROUND (img
, f
, ximg
);
2506 /* Put the image into the pixmap. */
2507 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2508 x_destroy_x_image (ximg
);
2512 CloseComponent (gi
);
2517 /* Load an image using the QuickTime Graphics Importer.
2518 Note: The alpha channel does not work for PNG images. */
2520 image_load_quicktime (f
, img
, type
)
2525 Lisp_Object specified_file
;
2526 Lisp_Object specified_data
;
2529 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2530 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2532 if (NILP (specified_data
))
2534 /* Read from a file */
2538 err
= find_image_fsspec (specified_file
, &file
, &fss
);
2542 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2544 image_error ("Cannot open `%s'", file
, Qnil
);
2547 return image_load_qt_1 (f
, img
, type
, &fss
, NULL
);
2551 /* Memory source! */
2555 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
2558 image_error ("Cannot allocate data handle for `%s'",
2562 success_p
= image_load_qt_1 (f
, img
, type
, NULL
, dh
);
2570 /* Load a PNG/JPEG image using Quartz 2D decoding routines.
2571 CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2.
2572 So don't use this function directly but determine at runtime
2573 whether it exists. */
2574 typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType
)
2575 (CGDataProviderRef
, const float [], bool, CGColorRenderingIntent
);
2576 static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider
;
2580 init_image_func_pointer ()
2582 if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider"))
2584 MyCGImageCreateWithPNGDataProvider
2585 = (CGImageCreateWithPNGDataProviderProcType
)
2586 NSAddressOfSymbol (NSLookupAndBindSymbol
2587 ("_CGImageCreateWithPNGDataProvider"));
2590 MyCGImageCreateWithPNGDataProvider
= NULL
;
2595 image_load_quartz2d (f
, img
, png_p
)
2600 Lisp_Object file
, specified_file
;
2601 Lisp_Object specified_data
, specified_bg
;
2602 struct gcpro gcpro1
;
2603 CGDataProviderRef source
;
2607 XImagePtr ximg
= NULL
;
2608 CGContextRef context
;
2611 /* Open the file. */
2612 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2613 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2618 if (NILP (specified_data
))
2623 file
= x_find_image_file (specified_file
);
2624 if (!STRINGP (file
))
2626 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2630 path
= cfstring_create_with_utf8_cstring (SDATA (file
));
2631 url
= CFURLCreateWithFileSystemPath (NULL
, path
,
2632 kCFURLPOSIXPathStyle
, 0);
2634 source
= CGDataProviderCreateWithURL (url
);
2638 source
= CGDataProviderCreateWithData (NULL
, SDATA (specified_data
),
2639 SBYTES (specified_data
), NULL
);
2642 image
= (*MyCGImageCreateWithPNGDataProvider
) (source
, NULL
, FALSE
,
2643 kCGRenderingIntentDefault
);
2645 image
= CGImageCreateWithJPEGDataProvider (source
, NULL
, FALSE
,
2646 kCGRenderingIntentDefault
);
2648 CGDataProviderRelease (source
);
2652 image_error ("Error reading image `%s'", img
->spec
, Qnil
);
2655 width
= img
->width
= CGImageGetWidth (image
);
2656 height
= img
->height
= CGImageGetHeight (image
);
2658 if (!check_image_size (f
, width
, height
))
2660 CGImageRelease (image
);
2662 image_error ("Invalid image size", Qnil
, Qnil
);
2668 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2669 if (!STRINGP (specified_bg
) ||
2670 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2672 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2673 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2674 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2675 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2679 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2681 CGImageRelease (image
);
2685 rectangle
= CGRectMake (0, 0, width
, height
);
2686 QDBeginCGContext (ximg
, &context
);
2689 CGContextSetRGBFillColor (context
, color
.red
/ 65535.0,
2690 color
.green
/ 65535.0,
2691 color
.blue
/ 65535.0, 1.0);
2692 CGContextFillRect (context
, rectangle
);
2694 CGContextDrawImage (context
, rectangle
, image
);
2695 QDEndCGContext (ximg
, &context
);
2696 CGImageRelease (image
);
2698 /* Maybe fill in the background field while we have ximg handy. */
2699 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2700 IMAGE_BACKGROUND (img
, f
, ximg
);
2702 /* Put the image into the pixmap. */
2703 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2704 x_destroy_x_image (ximg
);
2713 /***********************************************************************
2715 ***********************************************************************/
2717 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2718 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2719 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2720 unsigned char *, unsigned char *));
2721 static int xbm_image_p
P_ ((Lisp_Object object
));
2722 static int xbm_read_bitmap_data
P_ ((struct frame
*f
,
2723 unsigned char *, unsigned char *,
2724 int *, int *, unsigned char **));
2725 static int xbm_file_p
P_ ((Lisp_Object
));
2728 /* Indices of image specification fields in xbm_format, below. */
2730 enum xbm_keyword_index
2748 /* Vector of image_keyword structures describing the format
2749 of valid XBM image specifications. */
2751 static struct image_keyword xbm_format
[XBM_LAST
] =
2753 {":type", IMAGE_SYMBOL_VALUE
, 1},
2754 {":file", IMAGE_STRING_VALUE
, 0},
2755 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2756 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2757 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2758 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2759 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2760 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2761 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2762 {":relief", IMAGE_INTEGER_VALUE
, 0},
2763 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2764 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2765 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2768 /* Structure describing the image type XBM. */
2770 static struct image_type xbm_type
=
2779 /* Tokens returned from xbm_scan. */
2788 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2789 A valid specification is a list starting with the symbol `image'
2790 The rest of the list is a property list which must contain an
2793 If the specification specifies a file to load, it must contain
2794 an entry `:file FILENAME' where FILENAME is a string.
2796 If the specification is for a bitmap loaded from memory it must
2797 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2798 WIDTH and HEIGHT are integers > 0. DATA may be:
2800 1. a string large enough to hold the bitmap data, i.e. it must
2801 have a size >= (WIDTH + 7) / 8 * HEIGHT
2803 2. a bool-vector of size >= WIDTH * HEIGHT
2805 3. a vector of strings or bool-vectors, one for each line of the
2808 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
2809 may not be specified in this case because they are defined in the
2812 Both the file and data forms may contain the additional entries
2813 `:background COLOR' and `:foreground COLOR'. If not present,
2814 foreground and background of the frame on which the image is
2815 displayed is used. */
2818 xbm_image_p (object
)
2821 struct image_keyword kw
[XBM_LAST
];
2823 bcopy (xbm_format
, kw
, sizeof kw
);
2824 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2827 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2829 if (kw
[XBM_FILE
].count
)
2831 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2834 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2836 /* In-memory XBM file. */
2837 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2845 /* Entries for `:width', `:height' and `:data' must be present. */
2846 if (!kw
[XBM_WIDTH
].count
2847 || !kw
[XBM_HEIGHT
].count
2848 || !kw
[XBM_DATA
].count
)
2851 data
= kw
[XBM_DATA
].value
;
2852 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2853 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2855 /* Check type of data, and width and height against contents of
2861 /* Number of elements of the vector must be >= height. */
2862 if (XVECTOR (data
)->size
< height
)
2865 /* Each string or bool-vector in data must be large enough
2866 for one line of the image. */
2867 for (i
= 0; i
< height
; ++i
)
2869 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2874 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2877 else if (BOOL_VECTOR_P (elt
))
2879 if (XBOOL_VECTOR (elt
)->size
< width
)
2886 else if (STRINGP (data
))
2889 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2892 else if (BOOL_VECTOR_P (data
))
2894 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2905 /* Scan a bitmap file. FP is the stream to read from. Value is
2906 either an enumerator from enum xbm_token, or a character for a
2907 single-character token, or 0 at end of file. If scanning an
2908 identifier, store the lexeme of the identifier in SVAL. If
2909 scanning a number, store its value in *IVAL. */
2912 xbm_scan (s
, end
, sval
, ival
)
2913 unsigned char **s
, *end
;
2921 /* Skip white space. */
2922 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2927 else if (isdigit (c
))
2929 int value
= 0, digit
;
2931 if (c
== '0' && *s
< end
)
2934 if (c
== 'x' || c
== 'X')
2941 else if (c
>= 'a' && c
<= 'f')
2942 digit
= c
- 'a' + 10;
2943 else if (c
>= 'A' && c
<= 'F')
2944 digit
= c
- 'A' + 10;
2947 value
= 16 * value
+ digit
;
2950 else if (isdigit (c
))
2954 && (c
= *(*s
)++, isdigit (c
)))
2955 value
= 8 * value
+ c
- '0';
2962 && (c
= *(*s
)++, isdigit (c
)))
2963 value
= 10 * value
+ c
- '0';
2971 else if (isalpha (c
) || c
== '_')
2975 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2982 else if (c
== '/' && **s
== '*')
2984 /* C-style comment. */
2986 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
3000 /* Create a Windows bitmap from X bitmap data. */
3002 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
3004 static unsigned char swap_nibble
[16]
3005 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
3006 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
3007 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
3008 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
3010 unsigned char *bits
, *p
;
3013 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
3014 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
3015 bits
= (unsigned char *) alloca (height
* w2
);
3016 bzero (bits
, height
* w2
);
3017 for (i
= 0; i
< height
; i
++)
3020 for (j
= 0; j
< w1
; j
++)
3022 /* Bitswap XBM bytes to match how Windows does things. */
3023 unsigned char c
= *data
++;
3024 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
3025 | (swap_nibble
[(c
>>4) & 0xf]));
3028 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
3033 static void convert_mono_to_color_image (f
, img
, foreground
, background
)
3036 COLORREF foreground
, background
;
3038 HDC hdc
, old_img_dc
, new_img_dc
;
3039 HGDIOBJ old_prev
, new_prev
;
3042 hdc
= get_frame_dc (f
);
3043 old_img_dc
= CreateCompatibleDC (hdc
);
3044 new_img_dc
= CreateCompatibleDC (hdc
);
3045 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
3046 release_frame_dc (f
, hdc
);
3047 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
3048 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
3049 SetTextColor (new_img_dc
, foreground
);
3050 SetBkColor (new_img_dc
, background
);
3052 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
3055 SelectObject (old_img_dc
, old_prev
);
3056 SelectObject (new_img_dc
, new_prev
);
3057 DeleteDC (old_img_dc
);
3058 DeleteDC (new_img_dc
);
3059 DeleteObject (img
->pixmap
);
3060 if (new_pixmap
== 0)
3061 fprintf (stderr
, "Failed to convert image to color.\n");
3063 img
->pixmap
= new_pixmap
;
3066 #define XBM_BIT_SHUFFLE(b) (~(b))
3070 #define XBM_BIT_SHUFFLE(b) (b)
3072 #endif /* HAVE_NTGUI */
3076 Create_Pixmap_From_Bitmap_Data(f
, img
, data
, fg
, bg
, non_default_colors
)
3080 RGB_PIXEL_COLOR fg
, bg
;
3081 int non_default_colors
;
3085 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
3087 /* If colors were specified, transfer the bitmap to a color one. */
3088 if (non_default_colors
)
3089 convert_mono_to_color_image (f
, img
, fg
, bg
);
3092 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
3095 img
->width
, img
->height
,
3097 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
3098 #endif /* HAVE_NTGUI */
3103 /* Replacement for XReadBitmapFileData which isn't available under old
3104 X versions. CONTENTS is a pointer to a buffer to parse; END is the
3105 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
3106 the image. Return in *DATA the bitmap data allocated with xmalloc.
3107 Value is non-zero if successful. DATA null means just test if
3108 CONTENTS looks like an in-memory XBM file. */
3111 xbm_read_bitmap_data (f
, contents
, end
, width
, height
, data
)
3113 unsigned char *contents
, *end
;
3114 int *width
, *height
;
3115 unsigned char **data
;
3117 unsigned char *s
= contents
;
3118 char buffer
[BUFSIZ
];
3121 int bytes_per_line
, i
, nbytes
;
3127 LA1 = xbm_scan (&s, end, buffer, &value)
3129 #define expect(TOKEN) \
3130 if (LA1 != (TOKEN)) \
3135 #define expect_ident(IDENT) \
3136 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
3141 *width
= *height
= -1;
3144 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
3146 /* Parse defines for width, height and hot-spots. */
3150 expect_ident ("define");
3151 expect (XBM_TK_IDENT
);
3153 if (LA1
== XBM_TK_NUMBER
)
3155 char *p
= strrchr (buffer
, '_');
3156 p
= p
? p
+ 1 : buffer
;
3157 if (strcmp (p
, "width") == 0)
3159 else if (strcmp (p
, "height") == 0)
3162 expect (XBM_TK_NUMBER
);
3165 if (!check_image_size (f
, *width
, *height
))
3167 else if (data
== NULL
)
3170 /* Parse bits. Must start with `static'. */
3171 expect_ident ("static");
3172 if (LA1
== XBM_TK_IDENT
)
3174 if (strcmp (buffer
, "unsigned") == 0)
3177 expect_ident ("char");
3179 else if (strcmp (buffer
, "short") == 0)
3183 if (*width
% 16 && *width
% 16 < 9)
3186 else if (strcmp (buffer
, "char") == 0)
3194 expect (XBM_TK_IDENT
);
3200 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
3201 nbytes
= bytes_per_line
* *height
;
3202 p
= *data
= (unsigned char *) xmalloc (nbytes
);
3206 for (i
= 0; i
< nbytes
; i
+= 2)
3209 expect (XBM_TK_NUMBER
);
3211 *p
++ = XBM_BIT_SHUFFLE (val
);
3212 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
3213 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
3215 if (LA1
== ',' || LA1
== '}')
3223 for (i
= 0; i
< nbytes
; ++i
)
3226 expect (XBM_TK_NUMBER
);
3228 *p
++ = XBM_BIT_SHUFFLE (val
);
3230 if (LA1
== ',' || LA1
== '}')
3255 /* Load XBM image IMG which will be displayed on frame F from buffer
3256 CONTENTS. END is the end of the buffer. Value is non-zero if
3260 xbm_load_image (f
, img
, contents
, end
)
3263 unsigned char *contents
, *end
;
3266 unsigned char *data
;
3269 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
, &data
);
3272 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3273 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3274 int non_default_colors
= 0;
3277 xassert (img
->width
> 0 && img
->height
> 0);
3279 /* Get foreground and background colors, maybe allocate colors. */
3280 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
3283 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
3284 non_default_colors
= 1;
3286 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
3289 background
= x_alloc_image_color (f
, img
, value
, background
);
3290 img
->background
= background
;
3291 img
->background_valid
= 1;
3292 non_default_colors
= 1;
3295 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
3296 foreground
, background
,
3297 non_default_colors
);
3300 if (img
->pixmap
== NO_PIXMAP
)
3302 x_clear_image (f
, img
);
3303 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
3309 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3315 /* Value is non-zero if DATA looks like an in-memory XBM file. */
3322 return (STRINGP (data
)
3323 && xbm_read_bitmap_data (NULL
, SDATA (data
),
3330 /* Fill image IMG which is used on frame F with pixmap data. Value is
3331 non-zero if successful. */
3339 Lisp_Object file_name
;
3341 xassert (xbm_image_p (img
->spec
));
3343 /* If IMG->spec specifies a file name, create a non-file spec from it. */
3344 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
3345 if (STRINGP (file_name
))
3348 unsigned char *contents
;
3350 struct gcpro gcpro1
;
3352 file
= x_find_image_file (file_name
);
3354 if (!STRINGP (file
))
3356 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
3361 contents
= slurp_file (SDATA (file
), &size
);
3362 if (contents
== NULL
)
3364 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3369 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3374 struct image_keyword fmt
[XBM_LAST
];
3376 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3377 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3378 int non_default_colors
= 0;
3381 int in_memory_file_p
= 0;
3383 /* See if data looks like an in-memory XBM file. */
3384 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3385 in_memory_file_p
= xbm_file_p (data
);
3387 /* Parse the image specification. */
3388 bcopy (xbm_format
, fmt
, sizeof fmt
);
3389 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3392 /* Get specified width, and height. */
3393 if (!in_memory_file_p
)
3395 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3396 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3397 xassert (img
->width
> 0 && img
->height
> 0);
3400 /* Get foreground and background colors, maybe allocate colors. */
3401 if (fmt
[XBM_FOREGROUND
].count
3402 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3404 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3406 non_default_colors
= 1;
3409 if (fmt
[XBM_BACKGROUND
].count
3410 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3412 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3414 non_default_colors
= 1;
3417 if (in_memory_file_p
)
3418 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3427 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3429 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3430 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3432 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3434 bcopy (SDATA (line
), p
, nbytes
);
3436 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3439 else if (STRINGP (data
))
3440 bits
= SDATA (data
);
3442 bits
= XBOOL_VECTOR (data
)->data
;
3444 /* Create the pixmap. */
3446 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3447 foreground
, background
,
3448 non_default_colors
);
3453 image_error ("Unable to create pixmap for XBM image `%s'",
3455 x_clear_image (f
, img
);
3465 /***********************************************************************
3467 ***********************************************************************/
3469 #if defined (HAVE_XPM) || defined (MAC_OS)
3471 static int xpm_image_p
P_ ((Lisp_Object object
));
3472 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3473 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3475 #endif /* HAVE_XPM || MAC_OS */
3479 /* Indicate to xpm.h that we don't have Xlib. */
3481 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3482 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3483 #define XColor xpm_XColor
3484 #define XImage xpm_XImage
3485 #define Display xpm_Display
3486 #define PIXEL_ALREADY_TYPEDEFED
3487 #include "X11/xpm.h"
3492 #undef PIXEL_ALREADY_TYPEDEFED
3494 #include "X11/xpm.h"
3495 #endif /* HAVE_NTGUI */
3496 #endif /* HAVE_XPM */
3498 #if defined (HAVE_XPM) || defined (MAC_OS)
3499 /* The symbol `xpm' identifying XPM-format images. */
3503 /* Indices of image specification fields in xpm_format, below. */
3505 enum xpm_keyword_index
3521 /* Vector of image_keyword structures describing the format
3522 of valid XPM image specifications. */
3524 static struct image_keyword xpm_format
[XPM_LAST
] =
3526 {":type", IMAGE_SYMBOL_VALUE
, 1},
3527 {":file", IMAGE_STRING_VALUE
, 0},
3528 {":data", IMAGE_STRING_VALUE
, 0},
3529 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3530 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3531 {":relief", IMAGE_INTEGER_VALUE
, 0},
3532 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3533 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3534 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3535 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3536 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3539 /* Structure describing the image type XPM. */
3541 static struct image_type xpm_type
=
3550 #ifdef HAVE_X_WINDOWS
3552 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3553 functions for allocating image colors. Our own functions handle
3554 color allocation failures more gracefully than the ones on the XPM
3557 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3558 #define ALLOC_XPM_COLORS
3560 #endif /* HAVE_X_WINDOWS */
3562 #ifdef ALLOC_XPM_COLORS
3564 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3565 static void xpm_free_color_cache
P_ ((void));
3566 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3567 static int xpm_color_bucket
P_ ((char *));
3568 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3571 /* An entry in a hash table used to cache color definitions of named
3572 colors. This cache is necessary to speed up XPM image loading in
3573 case we do color allocations ourselves. Without it, we would need
3574 a call to XParseColor per pixel in the image. */
3576 struct xpm_cached_color
3578 /* Next in collision chain. */
3579 struct xpm_cached_color
*next
;
3581 /* Color definition (RGB and pixel color). */
3588 /* The hash table used for the color cache, and its bucket vector
3591 #define XPM_COLOR_CACHE_BUCKETS 1001
3592 struct xpm_cached_color
**xpm_color_cache
;
3594 /* Initialize the color cache. */
3597 xpm_init_color_cache (f
, attrs
)
3599 XpmAttributes
*attrs
;
3601 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3602 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3603 memset (xpm_color_cache
, 0, nbytes
);
3604 init_color_table ();
3606 if (attrs
->valuemask
& XpmColorSymbols
)
3611 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3612 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3613 attrs
->colorsymbols
[i
].value
, &color
))
3615 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3617 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3622 /* Free the color cache. */
3625 xpm_free_color_cache ()
3627 struct xpm_cached_color
*p
, *next
;
3630 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3631 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3637 xfree (xpm_color_cache
);
3638 xpm_color_cache
= NULL
;
3639 free_color_table ();
3642 /* Return the bucket index for color named COLOR_NAME in the color
3646 xpm_color_bucket (color_name
)
3652 for (s
= color_name
; *s
; ++s
)
3654 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3658 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3659 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3662 static struct xpm_cached_color
*
3663 xpm_cache_color (f
, color_name
, color
, bucket
)
3670 struct xpm_cached_color
*p
;
3673 bucket
= xpm_color_bucket (color_name
);
3675 nbytes
= sizeof *p
+ strlen (color_name
);
3676 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3677 strcpy (p
->name
, color_name
);
3679 p
->next
= xpm_color_cache
[bucket
];
3680 xpm_color_cache
[bucket
] = p
;
3684 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3685 return the cached definition in *COLOR. Otherwise, make a new
3686 entry in the cache and allocate the color. Value is zero if color
3687 allocation failed. */
3690 xpm_lookup_color (f
, color_name
, color
)
3695 struct xpm_cached_color
*p
;
3696 int h
= xpm_color_bucket (color_name
);
3698 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3699 if (strcmp (p
->name
, color_name
) == 0)
3704 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3707 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3709 p
= xpm_cache_color (f
, color_name
, color
, h
);
3711 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3712 with transparency, and it's useful. */
3713 else if (strcmp ("opaque", color_name
) == 0)
3715 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3716 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3717 p
= xpm_cache_color (f
, color_name
, color
, h
);
3724 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3725 CLOSURE is a pointer to the frame on which we allocate the
3726 color. Return in *COLOR the allocated color. Value is non-zero
3730 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3737 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3741 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3742 is a pointer to the frame on which we allocate the color. Value is
3743 non-zero if successful. */
3746 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3756 #endif /* ALLOC_XPM_COLORS */
3761 /* XPM library details. */
3763 DEF_IMGLIB_FN (XpmFreeAttributes
);
3764 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3765 DEF_IMGLIB_FN (XpmReadFileToImage
);
3766 DEF_IMGLIB_FN (XImageFree
);
3769 init_xpm_functions (Lisp_Object libraries
)
3773 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3776 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3777 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3778 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3779 LOAD_IMGLIB_FN (library
, XImageFree
);
3783 #endif /* HAVE_NTGUI */
3786 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3787 for XPM images. Such a list must consist of conses whose car and
3791 xpm_valid_color_symbols_p (color_symbols
)
3792 Lisp_Object color_symbols
;
3794 while (CONSP (color_symbols
))
3796 Lisp_Object sym
= XCAR (color_symbols
);
3798 || !STRINGP (XCAR (sym
))
3799 || !STRINGP (XCDR (sym
)))
3801 color_symbols
= XCDR (color_symbols
);
3804 return NILP (color_symbols
);
3808 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3811 xpm_image_p (object
)
3814 struct image_keyword fmt
[XPM_LAST
];
3815 bcopy (xpm_format
, fmt
, sizeof fmt
);
3816 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3817 /* Either `:file' or `:data' must be present. */
3818 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3819 /* Either no `:color-symbols' or it's a list of conses
3820 whose car and cdr are strings. */
3821 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3822 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3825 #endif /* HAVE_XPM || MAC_OS */
3827 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3829 x_create_bitmap_from_xpm_data (f
, bits
)
3833 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3835 XpmAttributes attrs
;
3836 Pixmap bitmap
, mask
;
3838 bzero (&attrs
, sizeof attrs
);
3840 attrs
.visual
= FRAME_X_VISUAL (f
);
3841 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3842 attrs
.valuemask
|= XpmVisual
;
3843 attrs
.valuemask
|= XpmColormap
;
3845 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3846 bits
, &bitmap
, &mask
, &attrs
);
3847 if (rc
!= XpmSuccess
)
3849 XpmFreeAttributes (&attrs
);
3853 id
= x_allocate_bitmap_record (f
);
3854 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3855 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3856 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3857 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3858 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3859 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3860 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3861 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3863 XpmFreeAttributes (&attrs
);
3866 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3868 /* Load image IMG which will be displayed on frame F. Value is
3869 non-zero if successful. */
3879 XpmAttributes attrs
;
3880 Lisp_Object specified_file
, color_symbols
;
3883 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3884 #endif /* HAVE_NTGUI */
3886 /* Configure the XPM lib. Use the visual of frame F. Allocate
3887 close colors. Return colors allocated. */
3888 bzero (&attrs
, sizeof attrs
);
3891 attrs
.visual
= FRAME_X_VISUAL (f
);
3892 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3893 attrs
.valuemask
|= XpmVisual
;
3894 attrs
.valuemask
|= XpmColormap
;
3895 #endif /* HAVE_NTGUI */
3897 #ifdef ALLOC_XPM_COLORS
3898 /* Allocate colors with our own functions which handle
3899 failing color allocation more gracefully. */
3900 attrs
.color_closure
= f
;
3901 attrs
.alloc_color
= xpm_alloc_color
;
3902 attrs
.free_colors
= xpm_free_colors
;
3903 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3904 #else /* not ALLOC_XPM_COLORS */
3905 /* Let the XPM lib allocate colors. */
3906 attrs
.valuemask
|= XpmReturnAllocPixels
;
3907 #ifdef XpmAllocCloseColors
3908 attrs
.alloc_close_colors
= 1;
3909 attrs
.valuemask
|= XpmAllocCloseColors
;
3910 #else /* not XpmAllocCloseColors */
3911 attrs
.closeness
= 600;
3912 attrs
.valuemask
|= XpmCloseness
;
3913 #endif /* not XpmAllocCloseColors */
3914 #endif /* ALLOC_XPM_COLORS */
3915 #ifdef ALLOC_XPM_COLORS
3916 xpm_init_color_cache (f
, &attrs
);
3919 /* If image specification contains symbolic color definitions, add
3920 these to `attrs'. */
3921 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3922 if (CONSP (color_symbols
))
3925 XpmColorSymbol
*xpm_syms
;
3928 attrs
.valuemask
|= XpmColorSymbols
;
3930 /* Count number of symbols. */
3931 attrs
.numsymbols
= 0;
3932 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3935 /* Allocate an XpmColorSymbol array. */
3936 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3937 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3938 bzero (xpm_syms
, size
);
3939 attrs
.colorsymbols
= xpm_syms
;
3941 /* Fill the color symbol array. */
3942 for (tail
= color_symbols
, i
= 0;
3944 ++i
, tail
= XCDR (tail
))
3946 Lisp_Object name
= XCAR (XCAR (tail
));
3947 Lisp_Object color
= XCDR (XCAR (tail
));
3948 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3949 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3950 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3951 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3955 /* Create a pixmap for the image, either from a file, or from a
3956 string buffer containing data in the same format as an XPM file. */
3957 #ifdef ALLOC_XPM_COLORS
3958 xpm_init_color_cache (f
, &attrs
);
3961 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3965 HDC frame_dc
= get_frame_dc (f
);
3966 hdc
= CreateCompatibleDC (frame_dc
);
3967 release_frame_dc (f
, frame_dc
);
3969 #endif /* HAVE_NTGUI */
3971 if (STRINGP (specified_file
))
3973 Lisp_Object file
= x_find_image_file (specified_file
);
3974 if (!STRINGP (file
))
3976 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3981 /* XpmReadFileToPixmap is not available in the Windows port of
3982 libxpm. But XpmReadFileToImage almost does what we want. */
3983 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3984 &xpm_image
, &xpm_mask
,
3987 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3988 SDATA (file
), &img
->pixmap
, &img
->mask
,
3990 #endif /* HAVE_NTGUI */
3994 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3996 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3997 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3998 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3999 &xpm_image
, &xpm_mask
,
4002 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
4004 &img
->pixmap
, &img
->mask
,
4006 #endif /* HAVE_NTGUI */
4009 if (rc
== XpmSuccess
)
4011 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
4012 img
->colors
= colors_in_color_table (&img
->ncolors
);
4013 #else /* not ALLOC_XPM_COLORS */
4017 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
4018 plus some duplicate attributes. */
4019 if (xpm_image
&& xpm_image
->bitmap
)
4021 img
->pixmap
= xpm_image
->bitmap
;
4022 /* XImageFree in libXpm frees XImage struct without destroying
4023 the bitmap, which is what we want. */
4024 fn_XImageFree (xpm_image
);
4026 if (xpm_mask
&& xpm_mask
->bitmap
)
4028 /* The mask appears to be inverted compared with what we expect.
4029 TODO: invert our expectations. See other places where we
4030 have to invert bits because our idea of masks is backwards. */
4032 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
4034 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
4035 SelectObject (hdc
, old_obj
);
4037 img
->mask
= xpm_mask
->bitmap
;
4038 fn_XImageFree (xpm_mask
);
4043 #endif /* HAVE_NTGUI */
4045 /* Remember allocated colors. */
4046 img
->ncolors
= attrs
.nalloc_pixels
;
4047 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
4048 * sizeof *img
->colors
);
4049 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
4051 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
4052 #ifdef DEBUG_X_COLORS
4053 register_color (img
->colors
[i
]);
4056 #endif /* not ALLOC_XPM_COLORS */
4058 img
->width
= attrs
.width
;
4059 img
->height
= attrs
.height
;
4060 xassert (img
->width
> 0 && img
->height
> 0);
4062 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
4064 fn_XpmFreeAttributes (&attrs
);
4066 XpmFreeAttributes (&attrs
);
4067 #endif /* HAVE_NTGUI */
4073 #endif /* HAVE_NTGUI */
4078 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
4081 case XpmFileInvalid
:
4082 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4086 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4089 case XpmColorFailed
:
4090 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
4094 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
4099 #ifdef ALLOC_XPM_COLORS
4100 xpm_free_color_cache ();
4102 return rc
== XpmSuccess
;
4105 #endif /* HAVE_XPM */
4109 /* XPM support functions for Mac OS where libxpm is not available.
4110 Only XPM version 3 (without any extensions) is supported. */
4112 static int xpm_scan
P_ ((const unsigned char **, const unsigned char *,
4113 const unsigned char **, int *));
4114 static Lisp_Object xpm_make_color_table_v
4115 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4116 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4117 static void xpm_put_color_table_v
P_ ((Lisp_Object
, const unsigned char *,
4119 static Lisp_Object xpm_get_color_table_v
P_ ((Lisp_Object
,
4120 const unsigned char *, int));
4121 static Lisp_Object xpm_make_color_table_h
4122 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4123 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4124 static void xpm_put_color_table_h
P_ ((Lisp_Object
, const unsigned char *,
4126 static Lisp_Object xpm_get_color_table_h
P_ ((Lisp_Object
,
4127 const unsigned char *, int));
4128 static int xpm_str_to_color_key
P_ ((const char *));
4129 static int xpm_load_image
P_ ((struct frame
*, struct image
*,
4130 const unsigned char *, const unsigned char *));
4132 /* Tokens returned from xpm_scan. */
4141 /* Scan an XPM data and return a character (< 256) or a token defined
4142 by enum xpm_token above. *S and END are the start (inclusive) and
4143 the end (exclusive) addresses of the data, respectively. Advance
4144 *S while scanning. If token is either XPM_TK_IDENT or
4145 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
4146 length of the corresponding token, respectively. */
4149 xpm_scan (s
, end
, beg
, len
)
4150 const unsigned char **s
, *end
, **beg
;
4157 /* Skip white-space. */
4158 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4161 /* gnus-pointer.xpm uses '-' in its identifier.
4162 sb-dir-plus.xpm uses '+' in its identifier. */
4163 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
4167 (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
4170 return XPM_TK_IDENT
;
4175 while (*s
< end
&& **s
!= '"')
4180 return XPM_TK_STRING
;
4184 if (*s
< end
&& **s
== '*')
4186 /* C-style comment. */
4190 while (*s
< end
&& *(*s
)++ != '*')
4193 while (*s
< end
&& **s
!= '/');
4207 /* Functions for color table lookup in XPM data. A Key is a string
4208 specifying the color of each pixel in XPM data. A value is either
4209 an integer that specifies a pixel color, Qt that specifies
4210 transparency, or Qnil for the unspecified color. If the length of
4211 the key string is one, a vector is used as a table. Otherwise, a
4212 hash table is used. */
4215 xpm_make_color_table_v (put_func
, get_func
)
4216 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4217 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4219 *put_func
= xpm_put_color_table_v
;
4220 *get_func
= xpm_get_color_table_v
;
4221 return Fmake_vector (make_number (256), Qnil
);
4225 xpm_put_color_table_v (color_table
, chars_start
, chars_len
, color
)
4226 Lisp_Object color_table
;
4227 const unsigned char *chars_start
;
4231 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
4235 xpm_get_color_table_v (color_table
, chars_start
, chars_len
)
4236 Lisp_Object color_table
;
4237 const unsigned char *chars_start
;
4240 return XVECTOR (color_table
)->contents
[*chars_start
];
4244 xpm_make_color_table_h (put_func
, get_func
)
4245 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4246 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4248 *put_func
= xpm_put_color_table_h
;
4249 *get_func
= xpm_get_color_table_h
;
4250 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
4251 make_float (DEFAULT_REHASH_SIZE
),
4252 make_float (DEFAULT_REHASH_THRESHOLD
),
4257 xpm_put_color_table_h (color_table
, chars_start
, chars_len
, color
)
4258 Lisp_Object color_table
;
4259 const unsigned char *chars_start
;
4263 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4265 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
4267 hash_lookup (table
, chars
, &hash_code
);
4268 hash_put (table
, chars
, color
, hash_code
);
4272 xpm_get_color_table_h (color_table
, chars_start
, chars_len
)
4273 Lisp_Object color_table
;
4274 const unsigned char *chars_start
;
4277 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4278 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
4281 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
4284 enum xpm_color_key
{
4292 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
4295 xpm_str_to_color_key (s
)
4301 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
4303 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
4309 xpm_load_image (f
, img
, contents
, end
)
4312 const unsigned char *contents
, *end
;
4314 const unsigned char *s
= contents
, *beg
, *str
;
4315 unsigned char buffer
[BUFSIZ
];
4316 int width
, height
, x
, y
;
4317 int num_colors
, chars_per_pixel
;
4319 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4320 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
4321 Lisp_Object frame
, color_symbols
, color_table
;
4322 int best_key
, have_mask
= 0;
4323 XImagePtr ximg
= NULL
, mask_img
= NULL
;
4326 LA1 = xpm_scan (&s, end, &beg, &len)
4328 #define expect(TOKEN) \
4329 if (LA1 != (TOKEN)) \
4334 #define expect_ident(IDENT) \
4335 if (LA1 == XPM_TK_IDENT \
4336 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
4341 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
4345 expect_ident ("static");
4346 expect_ident ("char");
4348 expect (XPM_TK_IDENT
);
4353 expect (XPM_TK_STRING
);
4356 memcpy (buffer
, beg
, len
);
4358 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
4359 &num_colors
, &chars_per_pixel
) != 4
4360 || width
<= 0 || height
<= 0
4361 || num_colors
<= 0 || chars_per_pixel
<= 0)
4364 if (!check_image_size (f
, width
, height
))
4366 image_error ("Invalid image size", Qnil
, Qnil
);
4372 XSETFRAME (frame
, f
);
4373 if (!NILP (Fxw_display_color_p (frame
)))
4374 best_key
= XPM_COLOR_KEY_C
;
4375 else if (!NILP (Fx_display_grayscale_p (frame
)))
4376 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
4377 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
4379 best_key
= XPM_COLOR_KEY_M
;
4381 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
4382 if (chars_per_pixel
== 1)
4383 color_table
= xpm_make_color_table_v (&put_color_table
,
4386 color_table
= xpm_make_color_table_h (&put_color_table
,
4389 while (num_colors
-- > 0)
4391 unsigned char *color
, *max_color
;
4392 int key
, next_key
, max_key
= 0;
4393 Lisp_Object symbol_color
= Qnil
, color_val
;
4396 expect (XPM_TK_STRING
);
4397 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
4399 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
4400 buffer
[len
- chars_per_pixel
] = '\0';
4402 str
= strtok (buffer
, " \t");
4405 key
= xpm_str_to_color_key (str
);
4410 color
= strtok (NULL
, " \t");
4414 while ((str
= strtok (NULL
, " \t")) != NULL
)
4416 next_key
= xpm_str_to_color_key (str
);
4419 color
[strlen (color
)] = ' ';
4422 if (key
== XPM_COLOR_KEY_S
)
4424 if (NILP (symbol_color
))
4425 symbol_color
= build_string (color
);
4427 else if (max_key
< key
&& key
<= best_key
)
4437 if (!NILP (color_symbols
) && !NILP (symbol_color
))
4439 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
4441 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
4443 if (xstricmp (SDATA (XCDR (specified_color
)), "None") == 0)
4445 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
4447 color_val
= make_number (cdef
.pixel
);
4450 if (NILP (color_val
) && max_key
> 0)
4452 if (xstricmp (max_color
, "None") == 0)
4454 else if (x_defined_color (f
, max_color
, &cdef
, 0))
4455 color_val
= make_number (cdef
.pixel
);
4457 if (!NILP (color_val
))
4458 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
4463 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4464 &ximg
, &img
->pixmap
)
4465 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
4466 &mask_img
, &img
->mask
))
4468 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4472 for (y
= 0; y
< height
; y
++)
4474 expect (XPM_TK_STRING
);
4476 if (len
< width
* chars_per_pixel
)
4478 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
4480 Lisp_Object color_val
=
4481 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4483 XPutPixel (ximg
, x
, y
,
4484 (INTEGERP (color_val
) ? XINT (color_val
)
4485 : FRAME_FOREGROUND_PIXEL (f
)));
4486 XPutPixel (mask_img
, x
, y
,
4487 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4488 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4495 img
->height
= height
;
4497 /* Maybe fill in the background field while we have ximg handy. */
4498 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4499 IMAGE_BACKGROUND (img
, f
, ximg
);
4501 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4502 x_destroy_x_image (ximg
);
4505 /* Fill in the background_transparent field while we have the
4507 image_background_transparent (img
, f
, mask_img
);
4509 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4510 x_destroy_x_image (mask_img
);
4514 x_destroy_x_image (mask_img
);
4515 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4516 img
->mask
= NO_PIXMAP
;
4522 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4524 x_destroy_x_image (ximg
);
4525 x_destroy_x_image (mask_img
);
4526 x_clear_image (f
, img
);
4540 Lisp_Object file_name
;
4542 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4543 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4544 if (STRINGP (file_name
))
4547 unsigned char *contents
;
4549 struct gcpro gcpro1
;
4551 file
= x_find_image_file (file_name
);
4553 if (!STRINGP (file
))
4555 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4560 contents
= slurp_file (SDATA (file
), &size
);
4561 if (contents
== NULL
)
4563 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4568 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4576 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4577 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4578 SDATA (data
) + SBYTES (data
));
4588 /***********************************************************************
4590 ***********************************************************************/
4592 #ifdef COLOR_TABLE_SUPPORT
4594 /* An entry in the color table mapping an RGB color to a pixel color. */
4599 unsigned long pixel
;
4601 /* Next in color table collision list. */
4602 struct ct_color
*next
;
4605 /* The bucket vector size to use. Must be prime. */
4609 /* Value is a hash of the RGB color given by R, G, and B. */
4611 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4613 /* The color hash table. */
4615 struct ct_color
**ct_table
;
4617 /* Number of entries in the color table. */
4619 int ct_colors_allocated
;
4621 /* Initialize the color table. */
4626 int size
= CT_SIZE
* sizeof (*ct_table
);
4627 ct_table
= (struct ct_color
**) xmalloc (size
);
4628 bzero (ct_table
, size
);
4629 ct_colors_allocated
= 0;
4633 /* Free memory associated with the color table. */
4639 struct ct_color
*p
, *next
;
4641 for (i
= 0; i
< CT_SIZE
; ++i
)
4642 for (p
= ct_table
[i
]; p
; p
= next
)
4653 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4654 entry for that color already is in the color table, return the
4655 pixel color of that entry. Otherwise, allocate a new color for R,
4656 G, B, and make an entry in the color table. */
4658 static unsigned long
4659 lookup_rgb_color (f
, r
, g
, b
)
4663 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4664 int i
= hash
% CT_SIZE
;
4666 Display_Info
*dpyinfo
;
4668 /* Handle TrueColor visuals specially, which improves performance by
4669 two orders of magnitude. Freeing colors on TrueColor visuals is
4670 a nop, and pixel colors specify RGB values directly. See also
4671 the Xlib spec, chapter 3.1. */
4672 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4673 if (dpyinfo
->red_bits
> 0)
4675 unsigned long pr
, pg
, pb
;
4677 /* Apply gamma-correction like normal color allocation does. */
4681 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4682 gamma_correct (f
, &color
);
4683 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4686 /* Scale down RGB values to the visual's bits per RGB, and shift
4687 them to the right position in the pixel color. Note that the
4688 original RGB values are 16-bit values, as usual in X. */
4689 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4690 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4691 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4693 /* Assemble the pixel color. */
4694 return pr
| pg
| pb
;
4697 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4698 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4704 #ifdef HAVE_X_WINDOWS
4713 cmap
= FRAME_X_COLORMAP (f
);
4714 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4717 ++ct_colors_allocated
;
4718 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4722 p
->pixel
= color
.pixel
;
4723 p
->next
= ct_table
[i
];
4727 return FRAME_FOREGROUND_PIXEL (f
);
4732 color
= PALETTERGB (r
, g
, b
);
4734 color
= RGB_TO_ULONG (r
, g
, b
);
4735 #endif /* HAVE_NTGUI */
4736 ++ct_colors_allocated
;
4737 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4742 p
->next
= ct_table
[i
];
4744 #endif /* HAVE_X_WINDOWS */
4752 /* Look up pixel color PIXEL which is used on frame F in the color
4753 table. If not already present, allocate it. Value is PIXEL. */
4755 static unsigned long
4756 lookup_pixel_color (f
, pixel
)
4758 unsigned long pixel
;
4760 int i
= pixel
% CT_SIZE
;
4763 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4764 if (p
->pixel
== pixel
)
4773 #ifdef HAVE_X_WINDOWS
4774 cmap
= FRAME_X_COLORMAP (f
);
4775 color
.pixel
= pixel
;
4776 x_query_color (f
, &color
);
4777 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4780 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4781 color
.pixel
= pixel
;
4782 XQueryColor (NULL
, cmap
, &color
);
4783 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4785 #endif /* HAVE_X_WINDOWS */
4789 ++ct_colors_allocated
;
4791 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4796 p
->next
= ct_table
[i
];
4800 return FRAME_FOREGROUND_PIXEL (f
);
4806 /* Value is a vector of all pixel colors contained in the color table,
4807 allocated via xmalloc. Set *N to the number of colors. */
4809 static unsigned long *
4810 colors_in_color_table (n
)
4815 unsigned long *colors
;
4817 if (ct_colors_allocated
== 0)
4824 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4826 *n
= ct_colors_allocated
;
4828 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4829 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4830 colors
[j
++] = p
->pixel
;
4836 #else /* COLOR_TABLE_SUPPORT */
4838 static unsigned long
4839 lookup_rgb_color (f
, r
, g
, b
)
4843 unsigned long pixel
;
4846 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4847 gamma_correct (f
, &pixel
);
4851 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4852 #endif /* HAVE_NTGUI */
4861 #endif /* COLOR_TABLE_SUPPORT */
4864 /***********************************************************************
4866 ***********************************************************************/
4868 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4869 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4870 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4873 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4874 #endif /* HAVE_NTGUI */
4876 /* Non-zero means draw a cross on images having `:conversion
4879 int cross_disabled_images
;
4881 /* Edge detection matrices for different edge-detection
4884 static int emboss_matrix
[9] = {
4886 2, -1, 0, /* y - 1 */
4888 0, 1, -2 /* y + 1 */
4891 static int laplace_matrix
[9] = {
4893 1, 0, 0, /* y - 1 */
4895 0, 0, -1 /* y + 1 */
4898 /* Value is the intensity of the color whose red/green/blue values
4901 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4904 /* On frame F, return an array of XColor structures describing image
4905 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4906 non-zero means also fill the red/green/blue members of the XColor
4907 structures. Value is a pointer to the array of XColors structures,
4908 allocated with xmalloc; it must be freed by the caller. */
4911 x_to_xcolors (f
, img
, rgb_p
)
4918 XImagePtr_or_DC ximg
;
4922 #endif /* HAVE_NTGUI */
4924 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4927 /* Get the X image IMG->pixmap. */
4928 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4929 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4931 /* Load the image into a memory device context. */
4932 hdc
= get_frame_dc (f
);
4933 ximg
= CreateCompatibleDC (hdc
);
4934 release_frame_dc (f
, hdc
);
4935 prev
= SelectObject (ximg
, img
->pixmap
);
4936 #endif /* HAVE_NTGUI */
4938 /* Fill the `pixel' members of the XColor array. I wished there
4939 were an easy and portable way to circumvent XGetPixel. */
4941 for (y
= 0; y
< img
->height
; ++y
)
4945 #ifdef HAVE_X_WINDOWS
4946 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4947 p
->pixel
= XGetPixel (ximg
, x
, y
);
4949 x_query_colors (f
, row
, img
->width
);
4953 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4955 /* W32_TODO: palette support needed here? */
4956 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4960 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4961 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4962 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4965 p
->red
= 256 * GetRValue (p
->pixel
);
4966 p
->green
= 256 * GetGValue (p
->pixel
);
4967 p
->blue
= 256 * GetBValue (p
->pixel
);
4968 #endif /* HAVE_NTGUI */
4971 #endif /* HAVE_X_WINDOWS */
4974 Destroy_Image (ximg
, prev
);
4981 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4982 created with CreateDIBSection, with the pointer to the bit values
4983 stored in ximg->data. */
4985 static void XPutPixel (ximg
, x
, y
, color
)
4990 int width
= ximg
->info
.bmiHeader
.biWidth
;
4991 int height
= ximg
->info
.bmiHeader
.biHeight
;
4992 unsigned char * pixel
;
4994 /* True color images. */
4995 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4997 int rowbytes
= width
* 3;
4998 /* Ensure scanlines are aligned on 4 byte boundaries. */
5000 rowbytes
+= 4 - (rowbytes
% 4);
5002 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
5003 /* Windows bitmaps are in BGR order. */
5004 *pixel
= GetBValue (color
);
5005 *(pixel
+ 1) = GetGValue (color
);
5006 *(pixel
+ 2) = GetRValue (color
);
5008 /* Monochrome images. */
5009 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
5011 int rowbytes
= width
/ 8;
5012 /* Ensure scanlines are aligned on 4 byte boundaries. */
5014 rowbytes
+= 4 - (rowbytes
% 4);
5015 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
5016 /* Filter out palette info. */
5017 if (color
& 0x00ffffff)
5018 *pixel
= *pixel
| (1 << x
% 8);
5020 *pixel
= *pixel
& ~(1 << x
% 8);
5023 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
5026 #endif /* HAVE_NTGUI */
5028 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
5029 RGB members are set. F is the frame on which this all happens.
5030 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
5033 x_from_xcolors (f
, img
, colors
)
5043 init_color_table ();
5045 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
5048 for (y
= 0; y
< img
->height
; ++y
)
5049 for (x
= 0; x
< img
->width
; ++x
, ++p
)
5051 unsigned long pixel
;
5052 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
5053 XPutPixel (oimg
, x
, y
, pixel
);
5057 x_clear_image_1 (f
, img
, 1, 0, 1);
5059 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
5060 x_destroy_x_image (oimg
);
5061 img
->pixmap
= pixmap
;
5062 #ifdef COLOR_TABLE_SUPPORT
5063 img
->colors
= colors_in_color_table (&img
->ncolors
);
5064 free_color_table ();
5065 #endif /* COLOR_TABLE_SUPPORT */
5069 /* On frame F, perform edge-detection on image IMG.
5071 MATRIX is a nine-element array specifying the transformation
5072 matrix. See emboss_matrix for an example.
5074 COLOR_ADJUST is a color adjustment added to each pixel of the
5078 x_detect_edges (f
, img
, matrix
, color_adjust
)
5081 int matrix
[9], color_adjust
;
5083 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5087 for (i
= sum
= 0; i
< 9; ++i
)
5088 sum
+= abs (matrix
[i
]);
5090 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
5092 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
5094 for (y
= 0; y
< img
->height
; ++y
)
5096 p
= COLOR (new, 0, y
);
5097 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5098 p
= COLOR (new, img
->width
- 1, y
);
5099 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5102 for (x
= 1; x
< img
->width
- 1; ++x
)
5104 p
= COLOR (new, x
, 0);
5105 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5106 p
= COLOR (new, x
, img
->height
- 1);
5107 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5110 for (y
= 1; y
< img
->height
- 1; ++y
)
5112 p
= COLOR (new, 1, y
);
5114 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
5116 int r
, g
, b
, y1
, x1
;
5119 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
5120 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
5123 XColor
*t
= COLOR (colors
, x1
, y1
);
5124 r
+= matrix
[i
] * t
->red
;
5125 g
+= matrix
[i
] * t
->green
;
5126 b
+= matrix
[i
] * t
->blue
;
5129 r
= (r
/ sum
+ color_adjust
) & 0xffff;
5130 g
= (g
/ sum
+ color_adjust
) & 0xffff;
5131 b
= (b
/ sum
+ color_adjust
) & 0xffff;
5132 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
5137 x_from_xcolors (f
, img
, new);
5143 /* Perform the pre-defined `emboss' edge-detection on image IMG
5151 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
5155 /* Transform image IMG which is used on frame F with a Laplace
5156 edge-detection algorithm. The result is an image that can be used
5157 to draw disabled buttons, for example. */
5164 x_detect_edges (f
, img
, laplace_matrix
, 45000);
5168 /* Perform edge-detection on image IMG on frame F, with specified
5169 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
5171 MATRIX must be either
5173 - a list of at least 9 numbers in row-major form
5174 - a vector of at least 9 numbers
5176 COLOR_ADJUST nil means use a default; otherwise it must be a
5180 x_edge_detection (f
, img
, matrix
, color_adjust
)
5183 Lisp_Object matrix
, color_adjust
;
5191 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
5192 ++i
, matrix
= XCDR (matrix
))
5193 trans
[i
] = XFLOATINT (XCAR (matrix
));
5195 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
5197 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
5198 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
5201 if (NILP (color_adjust
))
5202 color_adjust
= make_number (0xffff / 2);
5204 if (i
== 9 && NUMBERP (color_adjust
))
5205 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
5209 /* Transform image IMG on frame F so that it looks disabled. */
5212 x_disable_image (f
, img
)
5216 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
5218 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
5220 int n_planes
= dpyinfo
->n_planes
;
5221 #endif /* HAVE_NTGUI */
5225 /* Color (or grayscale). Convert to gray, and equalize. Just
5226 drawing such images with a stipple can look very odd, so
5227 we're using this method instead. */
5228 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5230 const int h
= 15000;
5231 const int l
= 30000;
5233 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
5237 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
5238 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
5239 p
->red
= p
->green
= p
->blue
= i2
;
5242 x_from_xcolors (f
, img
, colors
);
5245 /* Draw a cross over the disabled image, if we must or if we
5247 if (n_planes
< 2 || cross_disabled_images
)
5250 Display
*dpy
= FRAME_X_DISPLAY (f
);
5254 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, NULL, 0, NULL)
5255 #define MaskForeground(f) PIX_MASK_DRAW
5257 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, pixmap, 0, NULL)
5258 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
5261 gc
= XCreateGC_pixmap (dpy
, img
->pixmap
);
5262 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
5263 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
5264 img
->width
- 1, img
->height
- 1);
5265 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
5271 gc
= XCreateGC_pixmap (dpy
, img
->mask
);
5272 XSetForeground (dpy
, gc
, MaskForeground (f
));
5273 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
5274 img
->width
- 1, img
->height
- 1);
5275 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
5283 hdc
= get_frame_dc (f
);
5284 bmpdc
= CreateCompatibleDC (hdc
);
5285 release_frame_dc (f
, hdc
);
5287 prev
= SelectObject (bmpdc
, img
->pixmap
);
5289 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
5290 MoveToEx (bmpdc
, 0, 0, NULL
);
5291 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5292 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5293 LineTo (bmpdc
, img
->width
- 1, 0);
5297 SelectObject (bmpdc
, img
->mask
);
5298 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
5299 MoveToEx (bmpdc
, 0, 0, NULL
);
5300 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5301 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5302 LineTo (bmpdc
, img
->width
- 1, 0);
5304 SelectObject (bmpdc
, prev
);
5306 #endif /* HAVE_NTGUI */
5311 /* Build a mask for image IMG which is used on frame F. FILE is the
5312 name of an image file, for error messages. HOW determines how to
5313 determine the background color of IMG. If it is a list '(R G B)',
5314 with R, G, and B being integers >= 0, take that as the color of the
5315 background. Otherwise, determine the background color of IMG
5316 heuristically. Value is non-zero if successful. */
5319 x_build_heuristic_mask (f
, img
, how
)
5324 XImagePtr_or_DC ximg
;
5332 #endif /* HAVE_NTGUI */
5333 int x
, y
, rc
, use_img_background
;
5334 unsigned long bg
= 0;
5338 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
5339 img
->mask
= NO_PIXMAP
;
5340 img
->background_transparent_valid
= 0;
5344 /* Create an image and pixmap serving as mask. */
5345 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
5346 &mask_img
, &img
->mask
);
5350 /* Get the X image of IMG->pixmap. */
5351 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
5352 img
->width
, img
->height
,
5355 /* Create the bit array serving as mask. */
5356 row_width
= (img
->width
+ 7) / 8;
5357 mask_img
= xmalloc (row_width
* img
->height
);
5358 bzero (mask_img
, row_width
* img
->height
);
5360 /* Create a memory device context for IMG->pixmap. */
5361 frame_dc
= get_frame_dc (f
);
5362 ximg
= CreateCompatibleDC (frame_dc
);
5363 release_frame_dc (f
, frame_dc
);
5364 prev
= SelectObject (ximg
, img
->pixmap
);
5365 #endif /* HAVE_NTGUI */
5367 /* Determine the background color of ximg. If HOW is `(R G B)'
5368 take that as color. Otherwise, use the image's background color. */
5369 use_img_background
= 1;
5375 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
5377 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
5381 if (i
== 3 && NILP (how
))
5383 char color_name
[30];
5384 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
5387 0x00ffffff & /* Filter out palette info. */
5388 #endif /* HAVE_NTGUI */
5389 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
5390 use_img_background
= 0;
5394 if (use_img_background
)
5395 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
5397 /* Set all bits in mask_img to 1 whose color in ximg is different
5398 from the background color bg. */
5400 for (y
= 0; y
< img
->height
; ++y
)
5401 for (x
= 0; x
< img
->width
; ++x
)
5402 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
5403 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
5405 /* Fill in the background_transparent field while we have the mask handy. */
5406 image_background_transparent (img
, f
, mask_img
);
5408 /* Put mask_img into img->mask. */
5409 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5410 x_destroy_x_image (mask_img
);
5413 for (y
= 0; y
< img
->height
; ++y
)
5414 for (x
= 0; x
< img
->width
; ++x
)
5416 COLORREF p
= GetPixel (ximg
, x
, y
);
5418 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
5421 /* Create the mask image. */
5422 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
5424 /* Fill in the background_transparent field while we have the mask handy. */
5425 SelectObject (ximg
, img
->mask
);
5426 image_background_transparent (img
, f
, ximg
);
5428 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
5430 #endif /* HAVE_NTGUI */
5432 Destroy_Image (ximg
, prev
);
5438 /***********************************************************************
5439 PBM (mono, gray, color)
5440 ***********************************************************************/
5442 static int pbm_image_p
P_ ((Lisp_Object object
));
5443 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
5444 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
5446 /* The symbol `pbm' identifying images of this type. */
5450 /* Indices of image specification fields in gs_format, below. */
5452 enum pbm_keyword_index
5468 /* Vector of image_keyword structures describing the format
5469 of valid user-defined image specifications. */
5471 static struct image_keyword pbm_format
[PBM_LAST
] =
5473 {":type", IMAGE_SYMBOL_VALUE
, 1},
5474 {":file", IMAGE_STRING_VALUE
, 0},
5475 {":data", IMAGE_STRING_VALUE
, 0},
5476 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5477 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5478 {":relief", IMAGE_INTEGER_VALUE
, 0},
5479 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5480 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5481 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5482 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
5483 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5486 /* Structure describing the image type `pbm'. */
5488 static struct image_type pbm_type
=
5498 /* Return non-zero if OBJECT is a valid PBM image specification. */
5501 pbm_image_p (object
)
5504 struct image_keyword fmt
[PBM_LAST
];
5506 bcopy (pbm_format
, fmt
, sizeof fmt
);
5508 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5511 /* Must specify either :data or :file. */
5512 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5516 /* Scan a decimal number from *S and return it. Advance *S while
5517 reading the number. END is the end of the string. Value is -1 at
5521 pbm_scan_number (s
, end
)
5522 unsigned char **s
, *end
;
5524 int c
= 0, val
= -1;
5528 /* Skip white-space. */
5529 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5534 /* Skip comment to end of line. */
5535 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5538 else if (isdigit (c
))
5540 /* Read decimal number. */
5542 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5543 val
= 10 * val
+ c
- '0';
5555 #if 0 /* Unused. ++kfs */
5557 /* Read FILE into memory. Value is a pointer to a buffer allocated
5558 with xmalloc holding FILE's contents. Value is null if an error
5559 occurred. *SIZE is set to the size of the file. */
5562 pbm_read_file (file
, size
)
5570 if (stat (SDATA (file
), &st
) == 0
5571 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5572 && (buf
= (char *) xmalloc (st
.st_size
),
5573 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5592 #endif /* HAVE_NTGUI */
5594 /* Load PBM image IMG for use on frame F. */
5602 int width
, height
, max_color_idx
= 0;
5604 Lisp_Object file
, specified_file
;
5605 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5606 struct gcpro gcpro1
;
5607 unsigned char *contents
= NULL
;
5608 unsigned char *end
, *p
;
5611 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5615 if (STRINGP (specified_file
))
5617 file
= x_find_image_file (specified_file
);
5618 if (!STRINGP (file
))
5620 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5625 contents
= slurp_file (SDATA (file
), &size
);
5626 if (contents
== NULL
)
5628 image_error ("Error reading `%s'", file
, Qnil
);
5634 end
= contents
+ size
;
5639 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5641 end
= p
+ SBYTES (data
);
5644 /* Check magic number. */
5645 if (end
- p
< 2 || *p
++ != 'P')
5647 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5657 raw_p
= 0, type
= PBM_MONO
;
5661 raw_p
= 0, type
= PBM_GRAY
;
5665 raw_p
= 0, type
= PBM_COLOR
;
5669 raw_p
= 1, type
= PBM_MONO
;
5673 raw_p
= 1, type
= PBM_GRAY
;
5677 raw_p
= 1, type
= PBM_COLOR
;
5681 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5685 /* Read width, height, maximum color-component. Characters
5686 starting with `#' up to the end of a line are ignored. */
5687 width
= pbm_scan_number (&p
, end
);
5688 height
= pbm_scan_number (&p
, end
);
5690 if (type
!= PBM_MONO
)
5692 max_color_idx
= pbm_scan_number (&p
, end
);
5693 if (raw_p
&& max_color_idx
> 255)
5694 max_color_idx
= 255;
5697 if (!check_image_size (f
, width
, height
)
5698 || (type
!= PBM_MONO
&& max_color_idx
< 0))
5701 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5702 &ximg
, &img
->pixmap
))
5705 /* Initialize the color hash table. */
5706 init_color_table ();
5708 if (type
== PBM_MONO
)
5711 struct image_keyword fmt
[PBM_LAST
];
5712 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5713 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5715 /* Parse the image specification. */
5716 bcopy (pbm_format
, fmt
, sizeof fmt
);
5717 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5719 /* Get foreground and background colors, maybe allocate colors. */
5720 if (fmt
[PBM_FOREGROUND
].count
5721 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5722 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5723 if (fmt
[PBM_BACKGROUND
].count
5724 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5726 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5727 img
->background
= bg
;
5728 img
->background_valid
= 1;
5731 for (y
= 0; y
< height
; ++y
)
5732 for (x
= 0; x
< width
; ++x
)
5742 g
= pbm_scan_number (&p
, end
);
5744 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5749 for (y
= 0; y
< height
; ++y
)
5750 for (x
= 0; x
< width
; ++x
)
5754 if (type
== PBM_GRAY
)
5755 r
= g
= b
= raw_p
? *p
++ : pbm_scan_number (&p
, end
);
5764 r
= pbm_scan_number (&p
, end
);
5765 g
= pbm_scan_number (&p
, end
);
5766 b
= pbm_scan_number (&p
, end
);
5769 if (r
< 0 || g
< 0 || b
< 0)
5771 x_destroy_x_image (ximg
);
5772 image_error ("Invalid pixel value in image `%s'",
5777 /* RGB values are now in the range 0..max_color_idx.
5778 Scale this to the range 0..0xffff supported by X. */
5779 r
= (double) r
* 65535 / max_color_idx
;
5780 g
= (double) g
* 65535 / max_color_idx
;
5781 b
= (double) b
* 65535 / max_color_idx
;
5782 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5786 #ifdef COLOR_TABLE_SUPPORT
5787 /* Store in IMG->colors the colors allocated for the image, and
5788 free the color table. */
5789 img
->colors
= colors_in_color_table (&img
->ncolors
);
5790 free_color_table ();
5791 #endif /* COLOR_TABLE_SUPPORT */
5794 img
->height
= height
;
5796 /* Maybe fill in the background field while we have ximg handy. */
5798 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5799 /* Casting avoids a GCC warning. */
5800 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5802 /* Put the image into a pixmap. */
5803 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5804 x_destroy_x_image (ximg
);
5806 /* X and W32 versions did it here, MAC version above. ++kfs
5808 img->height = height; */
5816 /***********************************************************************
5818 ***********************************************************************/
5820 #if defined (HAVE_PNG) || defined (MAC_OS)
5822 /* Function prototypes. */
5824 static int png_image_p
P_ ((Lisp_Object object
));
5825 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
5827 /* The symbol `png' identifying images of this type. */
5831 /* Indices of image specification fields in png_format, below. */
5833 enum png_keyword_index
5848 /* Vector of image_keyword structures describing the format
5849 of valid user-defined image specifications. */
5851 static struct image_keyword png_format
[PNG_LAST
] =
5853 {":type", IMAGE_SYMBOL_VALUE
, 1},
5854 {":data", IMAGE_STRING_VALUE
, 0},
5855 {":file", IMAGE_STRING_VALUE
, 0},
5856 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5857 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5858 {":relief", IMAGE_INTEGER_VALUE
, 0},
5859 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5860 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5861 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5862 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5865 /* Structure describing the image type `png'. */
5867 static struct image_type png_type
=
5876 /* Return non-zero if OBJECT is a valid PNG image specification. */
5879 png_image_p (object
)
5882 struct image_keyword fmt
[PNG_LAST
];
5883 bcopy (png_format
, fmt
, sizeof fmt
);
5885 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5888 /* Must specify either the :data or :file keyword. */
5889 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5892 #endif /* HAVE_PNG || MAC_OS */
5897 #if defined HAVE_LIBPNG_PNG_H
5898 # include <libpng/png.h>
5904 /* PNG library details. */
5906 DEF_IMGLIB_FN (png_get_io_ptr
);
5907 DEF_IMGLIB_FN (png_check_sig
);
5908 DEF_IMGLIB_FN (png_create_read_struct
);
5909 DEF_IMGLIB_FN (png_create_info_struct
);
5910 DEF_IMGLIB_FN (png_destroy_read_struct
);
5911 DEF_IMGLIB_FN (png_set_read_fn
);
5912 DEF_IMGLIB_FN (png_set_sig_bytes
);
5913 DEF_IMGLIB_FN (png_read_info
);
5914 DEF_IMGLIB_FN (png_get_IHDR
);
5915 DEF_IMGLIB_FN (png_get_valid
);
5916 DEF_IMGLIB_FN (png_set_strip_16
);
5917 DEF_IMGLIB_FN (png_set_expand
);
5918 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5919 DEF_IMGLIB_FN (png_set_background
);
5920 DEF_IMGLIB_FN (png_get_bKGD
);
5921 DEF_IMGLIB_FN (png_read_update_info
);
5922 DEF_IMGLIB_FN (png_get_channels
);
5923 DEF_IMGLIB_FN (png_get_rowbytes
);
5924 DEF_IMGLIB_FN (png_read_image
);
5925 DEF_IMGLIB_FN (png_read_end
);
5926 DEF_IMGLIB_FN (png_error
);
5929 init_png_functions (Lisp_Object libraries
)
5933 /* Try loading libpng under probable names. */
5934 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5937 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5938 LOAD_IMGLIB_FN (library
, png_check_sig
);
5939 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5940 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5941 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5942 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5943 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5944 LOAD_IMGLIB_FN (library
, png_read_info
);
5945 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5946 LOAD_IMGLIB_FN (library
, png_get_valid
);
5947 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5948 LOAD_IMGLIB_FN (library
, png_set_expand
);
5949 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5950 LOAD_IMGLIB_FN (library
, png_set_background
);
5951 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5952 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5953 LOAD_IMGLIB_FN (library
, png_get_channels
);
5954 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5955 LOAD_IMGLIB_FN (library
, png_read_image
);
5956 LOAD_IMGLIB_FN (library
, png_read_end
);
5957 LOAD_IMGLIB_FN (library
, png_error
);
5962 #define fn_png_get_io_ptr png_get_io_ptr
5963 #define fn_png_check_sig png_check_sig
5964 #define fn_png_create_read_struct png_create_read_struct
5965 #define fn_png_create_info_struct png_create_info_struct
5966 #define fn_png_destroy_read_struct png_destroy_read_struct
5967 #define fn_png_set_read_fn png_set_read_fn
5968 #define fn_png_set_sig_bytes png_set_sig_bytes
5969 #define fn_png_read_info png_read_info
5970 #define fn_png_get_IHDR png_get_IHDR
5971 #define fn_png_get_valid png_get_valid
5972 #define fn_png_set_strip_16 png_set_strip_16
5973 #define fn_png_set_expand png_set_expand
5974 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5975 #define fn_png_set_background png_set_background
5976 #define fn_png_get_bKGD png_get_bKGD
5977 #define fn_png_read_update_info png_read_update_info
5978 #define fn_png_get_channels png_get_channels
5979 #define fn_png_get_rowbytes png_get_rowbytes
5980 #define fn_png_read_image png_read_image
5981 #define fn_png_read_end png_read_end
5982 #define fn_png_error png_error
5984 #endif /* HAVE_NTGUI */
5986 /* Error and warning handlers installed when the PNG library
5990 my_png_error (png_ptr
, msg
)
5991 png_struct
*png_ptr
;
5994 xassert (png_ptr
!= NULL
);
5995 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5996 longjmp (png_ptr
->jmpbuf
, 1);
6001 my_png_warning (png_ptr
, msg
)
6002 png_struct
*png_ptr
;
6005 xassert (png_ptr
!= NULL
);
6006 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
6009 /* Memory source for PNG decoding. */
6011 struct png_memory_storage
6013 unsigned char *bytes
; /* The data */
6014 size_t len
; /* How big is it? */
6015 int index
; /* Where are we? */
6019 /* Function set as reader function when reading PNG image from memory.
6020 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6021 bytes from the input to DATA. */
6024 png_read_from_memory (png_ptr
, data
, length
)
6025 png_structp png_ptr
;
6029 struct png_memory_storage
*tbr
6030 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
6032 if (length
> tbr
->len
- tbr
->index
)
6033 fn_png_error (png_ptr
, "Read error");
6035 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
6036 tbr
->index
= tbr
->index
+ length
;
6040 /* Function set as reader function when reading PNG image from a file.
6041 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6042 bytes from the input to DATA. */
6045 png_read_from_file (png_ptr
, data
, length
)
6046 png_structp png_ptr
;
6050 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
6052 if (fread (data
, 1, length
, fp
) < length
)
6053 fn_png_error (png_ptr
, "Read error");
6057 /* Load PNG image IMG for use on frame F. Value is non-zero if
6065 Lisp_Object file
, specified_file
;
6066 Lisp_Object specified_data
;
6068 XImagePtr ximg
, mask_img
= NULL
;
6069 struct gcpro gcpro1
;
6070 png_struct
*png_ptr
= NULL
;
6071 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
6072 FILE *volatile fp
= NULL
;
6074 png_byte
* volatile pixels
= NULL
;
6075 png_byte
** volatile rows
= NULL
;
6076 png_uint_32 width
, height
;
6077 int bit_depth
, color_type
, interlace_type
;
6079 png_uint_32 row_bytes
;
6081 double screen_gamma
;
6082 struct png_memory_storage tbr
; /* Data to be read */
6084 /* Find out what file to load. */
6085 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6086 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6090 if (NILP (specified_data
))
6092 file
= x_find_image_file (specified_file
);
6093 if (!STRINGP (file
))
6095 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6100 /* Open the image file. */
6101 fp
= fopen (SDATA (file
), "rb");
6104 image_error ("Cannot open image file `%s'", file
, Qnil
);
6109 /* Check PNG signature. */
6110 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
6111 || !fn_png_check_sig (sig
, sizeof sig
))
6113 image_error ("Not a PNG file: `%s'", file
, Qnil
);
6121 /* Read from memory. */
6122 tbr
.bytes
= SDATA (specified_data
);
6123 tbr
.len
= SBYTES (specified_data
);
6126 /* Check PNG signature. */
6127 if (tbr
.len
< sizeof sig
6128 || !fn_png_check_sig (tbr
.bytes
, sizeof sig
))
6130 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
6135 /* Need to skip past the signature. */
6136 tbr
.bytes
+= sizeof (sig
);
6139 /* Initialize read and info structs for PNG lib. Casting return
6140 value avoids a GCC warning on W32. */
6141 png_ptr
= (png_structp
)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
6146 if (fp
) fclose (fp
);
6151 /* Casting return value avoids a GCC warning on W32. */
6152 info_ptr
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6155 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
6156 if (fp
) fclose (fp
);
6161 /* Casting return value avoids a GCC warning on W32. */
6162 end_info
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6165 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
6166 if (fp
) fclose (fp
);
6171 /* Set error jump-back. We come back here when the PNG library
6172 detects an error. */
6173 if (setjmp (png_ptr
->jmpbuf
))
6177 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6180 if (fp
) fclose (fp
);
6185 /* Read image info. */
6186 if (!NILP (specified_data
))
6187 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
6189 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
6191 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
6192 fn_png_read_info (png_ptr
, info_ptr
);
6193 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
6194 &interlace_type
, NULL
, NULL
);
6196 if (!check_image_size (f
, width
, height
))
6199 /* If image contains simply transparency data, we prefer to
6200 construct a clipping mask. */
6201 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
6206 /* This function is easier to write if we only have to handle
6207 one data format: RGB or RGBA with 8 bits per channel. Let's
6208 transform other formats into that format. */
6210 /* Strip more than 8 bits per channel. */
6211 if (bit_depth
== 16)
6212 fn_png_set_strip_16 (png_ptr
);
6214 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
6216 fn_png_set_expand (png_ptr
);
6218 /* Convert grayscale images to RGB. */
6219 if (color_type
== PNG_COLOR_TYPE_GRAY
6220 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
6221 fn_png_set_gray_to_rgb (png_ptr
);
6223 screen_gamma
= (f
->gamma
? 1 / f
->gamma
/ 0.45455 : 2.2);
6225 #if 0 /* Avoid double gamma correction for PNG images. */
6226 { /* Tell the PNG lib to handle gamma correction for us. */
6229 #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
6230 if (png_get_sRGB (png_ptr
, info_ptr
, &intent
))
6231 /* The libpng documentation says this is right in this case. */
6232 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6235 if (png_get_gAMA (png_ptr
, info_ptr
, &image_gamma
))
6236 /* Image contains gamma information. */
6237 png_set_gamma (png_ptr
, screen_gamma
, image_gamma
);
6239 /* Use the standard default for the image gamma. */
6240 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6244 /* Handle alpha channel by combining the image with a background
6245 color. Do this only if a real alpha channel is supplied. For
6246 simple transparency, we prefer a clipping mask. */
6249 png_color_16
*image_bg
;
6250 Lisp_Object specified_bg
6251 = image_spec_value (img
->spec
, QCbackground
, NULL
);
6253 if (STRINGP (specified_bg
))
6254 /* The user specified `:background', use that. */
6256 /* W32 version incorrectly used COLORREF here!! ++kfs */
6258 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
6260 png_color_16 user_bg
;
6262 bzero (&user_bg
, sizeof user_bg
);
6263 user_bg
.red
= color
.red
>> 8;
6264 user_bg
.green
= color
.green
>> 8;
6265 user_bg
.blue
= color
.blue
>> 8;
6267 fn_png_set_background (png_ptr
, &user_bg
,
6268 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6271 else if (fn_png_get_bKGD (png_ptr
, info_ptr
, &image_bg
))
6272 /* Image contains a background color with which to
6273 combine the image. */
6274 fn_png_set_background (png_ptr
, image_bg
,
6275 PNG_BACKGROUND_GAMMA_FILE
, 1, 1.0);
6278 /* Image does not contain a background color with which
6279 to combine the image data via an alpha channel. Use
6280 the frame's background instead. */
6281 #ifdef HAVE_X_WINDOWS
6283 png_color_16 frame_background
;
6285 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
6286 x_query_color (f
, &color
);
6288 bzero (&frame_background
, sizeof frame_background
);
6289 frame_background
.red
= color
.red
>> 8;
6290 frame_background
.green
= color
.green
>> 8;
6291 frame_background
.blue
= color
.blue
>> 8;
6292 #endif /* HAVE_X_WINDOWS */
6296 png_color_16 frame_background
;
6297 color
= FRAME_BACKGROUND_PIXEL (f
);
6298 #if 0 /* W32 TODO : Colormap support. */
6299 x_query_color (f
, &color
);
6301 bzero (&frame_background
, sizeof frame_background
);
6302 frame_background
.red
= GetRValue (color
);
6303 frame_background
.green
= GetGValue (color
);
6304 frame_background
.blue
= GetBValue (color
);
6305 #endif /* HAVE_NTGUI */
6308 unsigned long color
;
6309 png_color_16 frame_background
;
6310 color
= FRAME_BACKGROUND_PIXEL (f
);
6311 #if 0 /* MAC/W32 TODO : Colormap support. */
6312 x_query_color (f
, &color
);
6314 bzero (&frame_background
, sizeof frame_background
);
6315 frame_background
.red
= RED_FROM_ULONG (color
);
6316 frame_background
.green
= GREEN_FROM_ULONG (color
);
6317 frame_background
.blue
= BLUE_FROM_ULONG (color
);
6320 fn_png_set_background (png_ptr
, &frame_background
,
6321 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6325 /* Update info structure. */
6326 fn_png_read_update_info (png_ptr
, info_ptr
);
6328 /* Get number of channels. Valid values are 1 for grayscale images
6329 and images with a palette, 2 for grayscale images with transparency
6330 information (alpha channel), 3 for RGB images, and 4 for RGB
6331 images with alpha channel, i.e. RGBA. If conversions above were
6332 sufficient we should only have 3 or 4 channels here. */
6333 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
6334 xassert (channels
== 3 || channels
== 4);
6336 /* Number of bytes needed for one row of the image. */
6337 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
6339 /* Allocate memory for the image. */
6340 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
6341 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
6342 for (i
= 0; i
< height
; ++i
)
6343 rows
[i
] = pixels
+ i
* row_bytes
;
6345 /* Read the entire image. */
6346 fn_png_read_image (png_ptr
, rows
);
6347 fn_png_read_end (png_ptr
, info_ptr
);
6354 /* Create the X image and pixmap. */
6355 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
6359 /* Create an image and pixmap serving as mask if the PNG image
6360 contains an alpha channel. */
6363 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
6364 &mask_img
, &img
->mask
))
6366 x_destroy_x_image (ximg
);
6367 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
6368 img
->pixmap
= NO_PIXMAP
;
6372 /* Fill the X image and mask from PNG data. */
6373 init_color_table ();
6375 for (y
= 0; y
< height
; ++y
)
6377 png_byte
*p
= rows
[y
];
6379 for (x
= 0; x
< width
; ++x
)
6386 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
6387 /* An alpha channel, aka mask channel, associates variable
6388 transparency with an image. Where other image formats
6389 support binary transparency---fully transparent or fully
6390 opaque---PNG allows up to 254 levels of partial transparency.
6391 The PNG library implements partial transparency by combining
6392 the image with a specified background color.
6394 I'm not sure how to handle this here nicely: because the
6395 background on which the image is displayed may change, for
6396 real alpha channel support, it would be necessary to create
6397 a new image for each possible background.
6399 What I'm doing now is that a mask is created if we have
6400 boolean transparency information. Otherwise I'm using
6401 the frame's background color to combine the image with. */
6406 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
6412 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6413 /* Set IMG's background color from the PNG image, unless the user
6417 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
6419 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
6420 img
->background_valid
= 1;
6424 #ifdef COLOR_TABLE_SUPPORT
6425 /* Remember colors allocated for this image. */
6426 img
->colors
= colors_in_color_table (&img
->ncolors
);
6427 free_color_table ();
6428 #endif /* COLOR_TABLE_SUPPORT */
6431 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6436 img
->height
= height
;
6438 /* Maybe fill in the background field while we have ximg handy.
6439 Casting avoids a GCC warning. */
6440 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6442 /* Put the image into the pixmap, then free the X image and its buffer. */
6443 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6444 x_destroy_x_image (ximg
);
6446 /* Same for the mask. */
6449 /* Fill in the background_transparent field while we have the
6450 mask handy. Casting avoids a GCC warning. */
6451 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
6453 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
6454 x_destroy_x_image (mask_img
);
6461 #else /* HAVE_PNG */
6470 if (MyCGImageCreateWithPNGDataProvider
)
6471 return image_load_quartz2d (f
, img
, 1);
6474 return image_load_quicktime (f
, img
, kQTFileTypePNG
);
6478 #endif /* !HAVE_PNG */
6482 /***********************************************************************
6484 ***********************************************************************/
6486 #if defined (HAVE_JPEG) || defined (MAC_OS)
6488 static int jpeg_image_p
P_ ((Lisp_Object object
));
6489 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
6491 /* The symbol `jpeg' identifying images of this type. */
6495 /* Indices of image specification fields in gs_format, below. */
6497 enum jpeg_keyword_index
6506 JPEG_HEURISTIC_MASK
,
6512 /* Vector of image_keyword structures describing the format
6513 of valid user-defined image specifications. */
6515 static struct image_keyword jpeg_format
[JPEG_LAST
] =
6517 {":type", IMAGE_SYMBOL_VALUE
, 1},
6518 {":data", IMAGE_STRING_VALUE
, 0},
6519 {":file", IMAGE_STRING_VALUE
, 0},
6520 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6521 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6522 {":relief", IMAGE_INTEGER_VALUE
, 0},
6523 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6524 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6525 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6526 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6529 /* Structure describing the image type `jpeg'. */
6531 static struct image_type jpeg_type
=
6540 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6543 jpeg_image_p (object
)
6546 struct image_keyword fmt
[JPEG_LAST
];
6548 bcopy (jpeg_format
, fmt
, sizeof fmt
);
6550 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6553 /* Must specify either the :data or :file keyword. */
6554 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6557 #endif /* HAVE_JPEG || MAC_OS */
6561 /* Work around a warning about HAVE_STDLIB_H being redefined in
6563 #ifdef HAVE_STDLIB_H
6564 #define HAVE_STDLIB_H_1
6565 #undef HAVE_STDLIB_H
6566 #endif /* HAVE_STLIB_H */
6568 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6569 /* In older releases of the jpeg library, jpeglib.h will define boolean
6570 differently depending on __WIN32__, so make sure it is defined. */
6574 #include <jpeglib.h>
6578 #ifdef HAVE_STLIB_H_1
6579 #define HAVE_STDLIB_H 1
6584 /* JPEG library details. */
6585 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6586 DEF_IMGLIB_FN (jpeg_start_decompress
);
6587 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6588 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6589 DEF_IMGLIB_FN (jpeg_read_header
);
6590 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6591 DEF_IMGLIB_FN (jpeg_std_error
);
6592 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6595 init_jpeg_functions (Lisp_Object libraries
)
6599 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6602 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6603 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6604 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6605 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6606 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6607 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6608 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6609 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6613 /* Wrapper since we can't directly assign the function pointer
6614 to another function pointer that was declared more completely easily. */
6616 jpeg_resync_to_restart_wrapper(cinfo
, desired
)
6617 j_decompress_ptr cinfo
;
6620 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6625 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6626 #define fn_jpeg_start_decompress jpeg_start_decompress
6627 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6628 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6629 #define fn_jpeg_read_header jpeg_read_header
6630 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6631 #define fn_jpeg_std_error jpeg_std_error
6632 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6634 #endif /* HAVE_NTGUI */
6636 struct my_jpeg_error_mgr
6638 struct jpeg_error_mgr pub
;
6639 jmp_buf setjmp_buffer
;
6644 my_error_exit (cinfo
)
6647 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6648 longjmp (mgr
->setjmp_buffer
, 1);
6652 /* Init source method for JPEG data source manager. Called by
6653 jpeg_read_header() before any data is actually read. See
6654 libjpeg.doc from the JPEG lib distribution. */
6657 our_common_init_source (cinfo
)
6658 j_decompress_ptr cinfo
;
6663 /* Method to terminate data source. Called by
6664 jpeg_finish_decompress() after all data has been processed. */
6667 our_common_term_source (cinfo
)
6668 j_decompress_ptr cinfo
;
6673 /* Fill input buffer method for JPEG data source manager. Called
6674 whenever more data is needed. We read the whole image in one step,
6675 so this only adds a fake end of input marker at the end. */
6678 our_memory_fill_input_buffer (cinfo
)
6679 j_decompress_ptr cinfo
;
6681 /* Insert a fake EOI marker. */
6682 struct jpeg_source_mgr
*src
= cinfo
->src
;
6683 static JOCTET buffer
[2];
6685 buffer
[0] = (JOCTET
) 0xFF;
6686 buffer
[1] = (JOCTET
) JPEG_EOI
;
6688 src
->next_input_byte
= buffer
;
6689 src
->bytes_in_buffer
= 2;
6694 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6695 is the JPEG data source manager. */
6698 our_memory_skip_input_data (cinfo
, num_bytes
)
6699 j_decompress_ptr cinfo
;
6702 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6706 if (num_bytes
> src
->bytes_in_buffer
)
6707 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6709 src
->bytes_in_buffer
-= num_bytes
;
6710 src
->next_input_byte
+= num_bytes
;
6715 /* Set up the JPEG lib for reading an image from DATA which contains
6716 LEN bytes. CINFO is the decompression info structure created for
6717 reading the image. */
6720 jpeg_memory_src (cinfo
, data
, len
)
6721 j_decompress_ptr cinfo
;
6725 struct jpeg_source_mgr
*src
;
6727 if (cinfo
->src
== NULL
)
6729 /* First time for this JPEG object? */
6730 cinfo
->src
= (struct jpeg_source_mgr
*)
6731 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6732 sizeof (struct jpeg_source_mgr
));
6733 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6734 src
->next_input_byte
= data
;
6737 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6738 src
->init_source
= our_common_init_source
;
6739 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6740 src
->skip_input_data
= our_memory_skip_input_data
;
6741 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6742 src
->term_source
= our_common_term_source
;
6743 src
->bytes_in_buffer
= len
;
6744 src
->next_input_byte
= data
;
6748 struct jpeg_stdio_mgr
6750 struct jpeg_source_mgr mgr
;
6757 /* Size of buffer to read JPEG from file.
6758 Not too big, as we want to use alloc_small. */
6759 #define JPEG_STDIO_BUFFER_SIZE 8192
6762 /* Fill input buffer method for JPEG data source manager. Called
6763 whenever more data is needed. The data is read from a FILE *. */
6766 our_stdio_fill_input_buffer (cinfo
)
6767 j_decompress_ptr cinfo
;
6769 struct jpeg_stdio_mgr
*src
;
6771 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6776 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6778 src
->mgr
.bytes_in_buffer
= bytes
;
6781 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6783 src
->buffer
[0] = (JOCTET
) 0xFF;
6784 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6785 src
->mgr
.bytes_in_buffer
= 2;
6787 src
->mgr
.next_input_byte
= src
->buffer
;
6794 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6795 is the JPEG data source manager. */
6798 our_stdio_skip_input_data (cinfo
, num_bytes
)
6799 j_decompress_ptr cinfo
;
6802 struct jpeg_stdio_mgr
*src
;
6803 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6805 while (num_bytes
> 0 && !src
->finished
)
6807 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6809 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6810 src
->mgr
.next_input_byte
+= num_bytes
;
6815 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6816 src
->mgr
.bytes_in_buffer
= 0;
6817 src
->mgr
.next_input_byte
= NULL
;
6819 our_stdio_fill_input_buffer (cinfo
);
6825 /* Set up the JPEG lib for reading an image from a FILE *.
6826 CINFO is the decompression info structure created for
6827 reading the image. */
6830 jpeg_file_src (cinfo
, fp
)
6831 j_decompress_ptr cinfo
;
6834 struct jpeg_stdio_mgr
*src
;
6836 if (cinfo
->src
!= NULL
)
6837 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6840 /* First time for this JPEG object? */
6841 cinfo
->src
= (struct jpeg_source_mgr
*)
6842 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6843 sizeof (struct jpeg_stdio_mgr
));
6844 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6845 src
->buffer
= (JOCTET
*)
6846 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6847 JPEG_STDIO_BUFFER_SIZE
);
6852 src
->mgr
.init_source
= our_common_init_source
;
6853 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6854 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6855 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6856 src
->mgr
.term_source
= our_common_term_source
;
6857 src
->mgr
.bytes_in_buffer
= 0;
6858 src
->mgr
.next_input_byte
= NULL
;
6862 /* Load image IMG for use on frame F. Patterned after example.c
6863 from the JPEG lib. */
6870 struct jpeg_decompress_struct cinfo
;
6871 struct my_jpeg_error_mgr mgr
;
6872 Lisp_Object file
, specified_file
;
6873 Lisp_Object specified_data
;
6874 FILE * volatile fp
= NULL
;
6876 int row_stride
, x
, y
;
6877 XImagePtr ximg
= NULL
;
6879 unsigned long *colors
;
6881 struct gcpro gcpro1
;
6883 /* Open the JPEG file. */
6884 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6885 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6889 if (NILP (specified_data
))
6891 file
= x_find_image_file (specified_file
);
6892 if (!STRINGP (file
))
6894 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6899 fp
= fopen (SDATA (file
), "rb");
6902 image_error ("Cannot open `%s'", file
, Qnil
);
6908 /* Customize libjpeg's error handling to call my_error_exit when an
6909 error is detected. This function will perform a longjmp.
6910 Casting return value avoids a GCC warning on W32. */
6911 cinfo
.err
= (struct jpeg_error_mgr
*)fn_jpeg_std_error (&mgr
.pub
);
6912 mgr
.pub
.error_exit
= my_error_exit
;
6914 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6918 /* Called from my_error_exit. Display a JPEG error. */
6919 char buffer
[JMSG_LENGTH_MAX
];
6920 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
6921 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6922 build_string (buffer
));
6925 /* Close the input file and destroy the JPEG object. */
6927 fclose ((FILE *) fp
);
6928 fn_jpeg_destroy_decompress (&cinfo
);
6930 /* If we already have an XImage, free that. */
6931 x_destroy_x_image (ximg
);
6933 /* Free pixmap and colors. */
6934 x_clear_image (f
, img
);
6940 /* Create the JPEG decompression object. Let it read from fp.
6941 Read the JPEG image header. */
6942 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6944 if (NILP (specified_data
))
6945 jpeg_file_src (&cinfo
, (FILE *) fp
);
6947 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6948 SBYTES (specified_data
));
6950 fn_jpeg_read_header (&cinfo
, 1);
6952 /* Customize decompression so that color quantization will be used.
6953 Start decompression. */
6954 cinfo
.quantize_colors
= 1;
6955 fn_jpeg_start_decompress (&cinfo
);
6956 width
= img
->width
= cinfo
.output_width
;
6957 height
= img
->height
= cinfo
.output_height
;
6959 if (!check_image_size (f
, width
, height
))
6961 image_error ("Invalid image size", Qnil
, Qnil
);
6962 longjmp (mgr
.setjmp_buffer
, 2);
6965 /* Create X image and pixmap. */
6966 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6967 longjmp (mgr
.setjmp_buffer
, 2);
6969 /* Allocate colors. When color quantization is used,
6970 cinfo.actual_number_of_colors has been set with the number of
6971 colors generated, and cinfo.colormap is a two-dimensional array
6972 of color indices in the range 0..cinfo.actual_number_of_colors.
6973 No more than 255 colors will be generated. */
6977 if (cinfo
.out_color_components
> 2)
6978 ir
= 0, ig
= 1, ib
= 2;
6979 else if (cinfo
.out_color_components
> 1)
6980 ir
= 0, ig
= 1, ib
= 0;
6982 ir
= 0, ig
= 0, ib
= 0;
6984 /* Use the color table mechanism because it handles colors that
6985 cannot be allocated nicely. Such colors will be replaced with
6986 a default color, and we don't have to care about which colors
6987 can be freed safely, and which can't. */
6988 init_color_table ();
6989 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6992 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6994 /* Multiply RGB values with 255 because X expects RGB values
6995 in the range 0..0xffff. */
6996 int r
= cinfo
.colormap
[ir
][i
] << 8;
6997 int g
= cinfo
.colormap
[ig
][i
] << 8;
6998 int b
= cinfo
.colormap
[ib
][i
] << 8;
6999 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7002 #ifdef COLOR_TABLE_SUPPORT
7003 /* Remember those colors actually allocated. */
7004 img
->colors
= colors_in_color_table (&img
->ncolors
);
7005 free_color_table ();
7006 #endif /* COLOR_TABLE_SUPPORT */
7010 row_stride
= width
* cinfo
.output_components
;
7011 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
7013 for (y
= 0; y
< height
; ++y
)
7015 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
7016 for (x
= 0; x
< cinfo
.output_width
; ++x
)
7017 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
7021 fn_jpeg_finish_decompress (&cinfo
);
7022 fn_jpeg_destroy_decompress (&cinfo
);
7024 fclose ((FILE *) fp
);
7026 /* Maybe fill in the background field while we have ximg handy. */
7027 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7028 /* Casting avoids a GCC warning. */
7029 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7031 /* Put the image into the pixmap. */
7032 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7033 x_destroy_x_image (ximg
);
7038 #else /* HAVE_JPEG */
7047 return image_load_quartz2d (f
, img
, 0);
7049 return image_load_quicktime (f
, img
, kQTFileTypeJPEG
);
7054 #endif /* !HAVE_JPEG */
7058 /***********************************************************************
7060 ***********************************************************************/
7062 #if defined (HAVE_TIFF) || defined (MAC_OS)
7064 static int tiff_image_p
P_ ((Lisp_Object object
));
7065 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
7067 /* The symbol `tiff' identifying images of this type. */
7071 /* Indices of image specification fields in tiff_format, below. */
7073 enum tiff_keyword_index
7082 TIFF_HEURISTIC_MASK
,
7088 /* Vector of image_keyword structures describing the format
7089 of valid user-defined image specifications. */
7091 static struct image_keyword tiff_format
[TIFF_LAST
] =
7093 {":type", IMAGE_SYMBOL_VALUE
, 1},
7094 {":data", IMAGE_STRING_VALUE
, 0},
7095 {":file", IMAGE_STRING_VALUE
, 0},
7096 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7097 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7098 {":relief", IMAGE_INTEGER_VALUE
, 0},
7099 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7100 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7101 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7102 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7105 /* Structure describing the image type `tiff'. */
7107 static struct image_type tiff_type
=
7116 /* Return non-zero if OBJECT is a valid TIFF image specification. */
7119 tiff_image_p (object
)
7122 struct image_keyword fmt
[TIFF_LAST
];
7123 bcopy (tiff_format
, fmt
, sizeof fmt
);
7125 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
7128 /* Must specify either the :data or :file keyword. */
7129 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
7132 #endif /* HAVE_TIFF || MAC_OS */
7140 /* TIFF library details. */
7141 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
7142 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
7143 DEF_IMGLIB_FN (TIFFOpen
);
7144 DEF_IMGLIB_FN (TIFFClientOpen
);
7145 DEF_IMGLIB_FN (TIFFGetField
);
7146 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
7147 DEF_IMGLIB_FN (TIFFClose
);
7150 init_tiff_functions (Lisp_Object libraries
)
7154 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
7157 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
7158 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
7159 LOAD_IMGLIB_FN (library
, TIFFOpen
);
7160 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
7161 LOAD_IMGLIB_FN (library
, TIFFGetField
);
7162 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
7163 LOAD_IMGLIB_FN (library
, TIFFClose
);
7169 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
7170 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
7171 #define fn_TIFFOpen TIFFOpen
7172 #define fn_TIFFClientOpen TIFFClientOpen
7173 #define fn_TIFFGetField TIFFGetField
7174 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
7175 #define fn_TIFFClose TIFFClose
7177 #endif /* HAVE_NTGUI */
7180 /* Reading from a memory buffer for TIFF images Based on the PNG
7181 memory source, but we have to provide a lot of extra functions.
7184 We really only need to implement read and seek, but I am not
7185 convinced that the TIFF library is smart enough not to destroy
7186 itself if we only hand it the function pointers we need to
7191 unsigned char *bytes
;
7198 tiff_read_from_memory (data
, buf
, size
)
7203 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7205 if (size
> src
->len
- src
->index
)
7207 bcopy (src
->bytes
+ src
->index
, buf
, size
);
7213 tiff_write_from_memory (data
, buf
, size
)
7222 tiff_seek_in_memory (data
, off
, whence
)
7227 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7232 case SEEK_SET
: /* Go from beginning of source. */
7236 case SEEK_END
: /* Go from end of source. */
7237 idx
= src
->len
+ off
;
7240 case SEEK_CUR
: /* Go from current position. */
7241 idx
= src
->index
+ off
;
7244 default: /* Invalid `whence'. */
7248 if (idx
> src
->len
|| idx
< 0)
7256 tiff_close_memory (data
)
7264 tiff_mmap_memory (data
, pbase
, psize
)
7269 /* It is already _IN_ memory. */
7274 tiff_unmap_memory (data
, base
, size
)
7279 /* We don't need to do this. */
7283 tiff_size_of_memory (data
)
7286 return ((tiff_memory_source
*) data
)->len
;
7291 tiff_error_handler (title
, format
, ap
)
7292 const char *title
, *format
;
7298 len
= sprintf (buf
, "TIFF error: %s ", title
);
7299 vsprintf (buf
+ len
, format
, ap
);
7300 add_to_log (buf
, Qnil
, Qnil
);
7305 tiff_warning_handler (title
, format
, ap
)
7306 const char *title
, *format
;
7312 len
= sprintf (buf
, "TIFF warning: %s ", title
);
7313 vsprintf (buf
+ len
, format
, ap
);
7314 add_to_log (buf
, Qnil
, Qnil
);
7318 /* Load TIFF image IMG for use on frame F. Value is non-zero if
7326 Lisp_Object file
, specified_file
;
7327 Lisp_Object specified_data
;
7329 int width
, height
, x
, y
;
7333 struct gcpro gcpro1
;
7334 tiff_memory_source memsrc
;
7336 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7337 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7341 fn_TIFFSetErrorHandler (tiff_error_handler
);
7342 fn_TIFFSetWarningHandler (tiff_warning_handler
);
7344 if (NILP (specified_data
))
7346 /* Read from a file */
7347 file
= x_find_image_file (specified_file
);
7348 if (!STRINGP (file
))
7350 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7355 /* Try to open the image file. Casting return value avoids a
7356 GCC warning on W32. */
7357 tiff
= (TIFF
*)fn_TIFFOpen (SDATA (file
), "r");
7360 image_error ("Cannot open `%s'", file
, Qnil
);
7367 /* Memory source! */
7368 memsrc
.bytes
= SDATA (specified_data
);
7369 memsrc
.len
= SBYTES (specified_data
);
7372 /* Casting return value avoids a GCC warning on W32. */
7373 tiff
= (TIFF
*)fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
7374 (TIFFReadWriteProc
) tiff_read_from_memory
,
7375 (TIFFReadWriteProc
) tiff_write_from_memory
,
7376 tiff_seek_in_memory
,
7378 tiff_size_of_memory
,
7384 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
7390 /* Get width and height of the image, and allocate a raster buffer
7391 of width x height 32-bit values. */
7392 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
7393 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
7395 if (!check_image_size (f
, width
, height
))
7397 image_error ("Invalid image size", Qnil
, Qnil
);
7402 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
7404 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
7405 fn_TIFFClose (tiff
);
7408 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
7414 /* Create the X image and pixmap. */
7415 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7422 /* Initialize the color table. */
7423 init_color_table ();
7425 /* Process the pixel raster. Origin is in the lower-left corner. */
7426 for (y
= 0; y
< height
; ++y
)
7428 uint32
*row
= buf
+ y
* width
;
7430 for (x
= 0; x
< width
; ++x
)
7432 uint32 abgr
= row
[x
];
7433 int r
= TIFFGetR (abgr
) << 8;
7434 int g
= TIFFGetG (abgr
) << 8;
7435 int b
= TIFFGetB (abgr
) << 8;
7436 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
7440 #ifdef COLOR_TABLE_SUPPORT
7441 /* Remember the colors allocated for the image. Free the color table. */
7442 img
->colors
= colors_in_color_table (&img
->ncolors
);
7443 free_color_table ();
7444 #endif /* COLOR_TABLE_SUPPORT */
7447 img
->height
= height
;
7449 /* Maybe fill in the background field while we have ximg handy. */
7450 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7451 /* Casting avoids a GCC warning on W32. */
7452 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7454 /* Put the image into the pixmap, then free the X image and its buffer. */
7455 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7456 x_destroy_x_image (ximg
);
7463 #else /* HAVE_TIFF */
7471 return image_load_quicktime (f
, img
, kQTFileTypeTIFF
);
7475 #endif /* !HAVE_TIFF */
7479 /***********************************************************************
7481 ***********************************************************************/
7483 #if defined (HAVE_GIF) || defined (MAC_OS)
7485 static int gif_image_p
P_ ((Lisp_Object object
));
7486 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
7487 static void gif_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7489 /* The symbol `gif' identifying images of this type. */
7493 /* Indices of image specification fields in gif_format, below. */
7495 enum gif_keyword_index
7511 /* Vector of image_keyword structures describing the format
7512 of valid user-defined image specifications. */
7514 static struct image_keyword gif_format
[GIF_LAST
] =
7516 {":type", IMAGE_SYMBOL_VALUE
, 1},
7517 {":data", IMAGE_STRING_VALUE
, 0},
7518 {":file", IMAGE_STRING_VALUE
, 0},
7519 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7520 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7521 {":relief", IMAGE_INTEGER_VALUE
, 0},
7522 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7523 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7524 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7525 {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
7526 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7529 /* Structure describing the image type `gif'. */
7531 static struct image_type gif_type
=
7540 /* Free X resources of GIF image IMG which is used on frame F. */
7543 gif_clear_image (f
, img
)
7547 /* IMG->data.ptr_val may contain extension data. */
7548 img
->data
.lisp_val
= Qnil
;
7549 x_clear_image (f
, img
);
7552 /* Return non-zero if OBJECT is a valid GIF image specification. */
7555 gif_image_p (object
)
7558 struct image_keyword fmt
[GIF_LAST
];
7559 bcopy (gif_format
, fmt
, sizeof fmt
);
7561 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7564 /* Must specify either the :data or :file keyword. */
7565 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7568 #endif /* HAVE_GIF || MAC_OS */
7572 #if defined (HAVE_NTGUI) || defined (MAC_OS)
7573 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7574 Undefine before redefining to avoid a preprocessor warning. */
7578 /* avoid conflict with QuickdrawText.h */
7579 #define DrawText gif_DrawText
7580 #include <gif_lib.h>
7583 #else /* HAVE_NTGUI || MAC_OS */
7585 #include <gif_lib.h>
7587 #endif /* HAVE_NTGUI || MAC_OS */
7592 /* GIF library details. */
7593 DEF_IMGLIB_FN (DGifCloseFile
);
7594 DEF_IMGLIB_FN (DGifSlurp
);
7595 DEF_IMGLIB_FN (DGifOpen
);
7596 DEF_IMGLIB_FN (DGifOpenFileName
);
7599 init_gif_functions (Lisp_Object libraries
)
7603 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7606 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7607 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7608 LOAD_IMGLIB_FN (library
, DGifOpen
);
7609 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7615 #define fn_DGifCloseFile DGifCloseFile
7616 #define fn_DGifSlurp DGifSlurp
7617 #define fn_DGifOpen DGifOpen
7618 #define fn_DGifOpenFileName DGifOpenFileName
7620 #endif /* HAVE_NTGUI */
7622 /* Reading a GIF image from memory
7623 Based on the PNG memory stuff to a certain extent. */
7627 unsigned char *bytes
;
7633 /* Make the current memory source available to gif_read_from_memory.
7634 It's done this way because not all versions of libungif support
7635 a UserData field in the GifFileType structure. */
7636 static gif_memory_source
*current_gif_memory_src
;
7639 gif_read_from_memory (file
, buf
, len
)
7644 gif_memory_source
*src
= current_gif_memory_src
;
7646 if (len
> src
->len
- src
->index
)
7649 bcopy (src
->bytes
+ src
->index
, buf
, len
);
7655 /* Load GIF image IMG for use on frame F. Value is non-zero if
7663 Lisp_Object file
, specified_file
;
7664 Lisp_Object specified_data
;
7665 int rc
, width
, height
, x
, y
, i
;
7667 ColorMapObject
*gif_color_map
;
7668 unsigned long pixel_colors
[256];
7670 struct gcpro gcpro1
;
7672 int ino
, image_height
, image_width
;
7673 gif_memory_source memsrc
;
7674 unsigned char *raster
;
7676 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7677 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7681 if (NILP (specified_data
))
7683 file
= x_find_image_file (specified_file
);
7684 if (!STRINGP (file
))
7686 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7691 /* Open the GIF file. Casting return value avoids a GCC warning
7693 gif
= (GifFileType
*)fn_DGifOpenFileName (SDATA (file
));
7696 image_error ("Cannot open `%s'", file
, Qnil
);
7703 /* Read from memory! */
7704 current_gif_memory_src
= &memsrc
;
7705 memsrc
.bytes
= SDATA (specified_data
);
7706 memsrc
.len
= SBYTES (specified_data
);
7709 /* Casting return value avoids a GCC warning on W32. */
7710 gif
= (GifFileType
*)fn_DGifOpen(&memsrc
, gif_read_from_memory
);
7713 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7719 /* Before reading entire contents, check the declared image size. */
7720 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7722 image_error ("Invalid image size", Qnil
, Qnil
);
7723 fn_DGifCloseFile (gif
);
7728 /* Read entire contents. */
7729 rc
= fn_DGifSlurp (gif
);
7730 if (rc
== GIF_ERROR
)
7732 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7733 fn_DGifCloseFile (gif
);
7738 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7739 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7740 if (ino
>= gif
->ImageCount
)
7742 image_error ("Invalid image number `%s' in image `%s'",
7744 fn_DGifCloseFile (gif
);
7749 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7750 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7751 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7752 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7753 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7754 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7756 width
= img
->width
= max (gif
->SWidth
,
7757 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7758 img
->corners
[RIGHT_CORNER
]));
7759 height
= img
->height
= max (gif
->SHeight
,
7760 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7761 img
->corners
[BOT_CORNER
]));
7763 if (!check_image_size (f
, width
, height
))
7765 image_error ("Invalid image size", Qnil
, Qnil
);
7766 fn_DGifCloseFile (gif
);
7771 /* Create the X image and pixmap. */
7772 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7774 fn_DGifCloseFile (gif
);
7779 /* Allocate colors. */
7780 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7782 gif_color_map
= gif
->SColorMap
;
7783 init_color_table ();
7784 bzero (pixel_colors
, sizeof pixel_colors
);
7786 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7788 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7789 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7790 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7791 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7794 #ifdef COLOR_TABLE_SUPPORT
7795 img
->colors
= colors_in_color_table (&img
->ncolors
);
7796 free_color_table ();
7797 #endif /* COLOR_TABLE_SUPPORT */
7799 /* Clear the part of the screen image that are not covered by
7800 the image from the GIF file. Full animated GIF support
7801 requires more than can be done here (see the gif89 spec,
7802 disposal methods). Let's simply assume that the part
7803 not covered by a sub-image is in the frame's background color. */
7804 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7805 for (x
= 0; x
< width
; ++x
)
7806 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7808 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7809 for (x
= 0; x
< width
; ++x
)
7810 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7812 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7814 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7815 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7816 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7817 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7820 /* Read the GIF image into the X image. We use a local variable
7821 `raster' here because RasterBits below is a char *, and invites
7822 problems with bytes >= 0x80. */
7823 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7825 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7827 static int interlace_start
[] = {0, 4, 2, 1};
7828 static int interlace_increment
[] = {8, 8, 4, 2};
7830 int row
= interlace_start
[0];
7834 for (y
= 0; y
< image_height
; y
++)
7836 if (row
>= image_height
)
7838 row
= interlace_start
[++pass
];
7839 while (row
>= image_height
)
7840 row
= interlace_start
[++pass
];
7843 for (x
= 0; x
< image_width
; x
++)
7845 int i
= raster
[(y
* image_width
) + x
];
7846 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7847 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7850 row
+= interlace_increment
[pass
];
7855 for (y
= 0; y
< image_height
; ++y
)
7856 for (x
= 0; x
< image_width
; ++x
)
7858 int i
= raster
[y
* image_width
+ x
];
7859 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7860 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7864 /* Save GIF image extension data for `image-extension-data'.
7865 Format is (count IMAGES FUNCTION "BYTES" ...). */
7866 img
->data
.lisp_val
= Qnil
;
7867 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7869 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7870 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7871 /* Append (... FUNCTION "BYTES") */
7872 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7873 Fcons (make_number (ext
->Function
),
7874 img
->data
.lisp_val
));
7875 img
->data
.lisp_val
= Fnreverse (img
->data
.lisp_val
);
7877 if (gif
->ImageCount
> 1)
7878 img
->data
.lisp_val
= Fcons (Qcount
,
7879 Fcons (make_number (gif
->ImageCount
),
7880 img
->data
.lisp_val
));
7882 fn_DGifCloseFile (gif
);
7884 /* Maybe fill in the background field while we have ximg handy. */
7885 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7886 /* Casting avoids a GCC warning. */
7887 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7889 /* Put the image into the pixmap, then free the X image and its buffer. */
7890 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7891 x_destroy_x_image (ximg
);
7897 #else /* !HAVE_GIF */
7905 Lisp_Object specified_file
, file
;
7906 Lisp_Object specified_data
;
7908 Boolean graphic_p
, movie_p
, prefer_graphic_p
;
7916 Lisp_Object specified_bg
;
7921 TimeScale time_scale
;
7922 TimeValue time
, duration
;
7927 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7928 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7930 /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */
7933 if (NILP (specified_data
))
7935 /* Read from a file */
7939 err
= find_image_fsspec (specified_file
, &file
, &fss
);
7943 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7948 err
= CanQuickTimeOpenFile (&fss
, kQTFileTypeGIF
, 0,
7949 &graphic_p
, &movie_p
, &prefer_graphic_p
, 0);
7953 if (!graphic_p
&& !movie_p
)
7955 if (prefer_graphic_p
)
7956 return image_load_qt_1 (f
, img
, kQTFileTypeGIF
, &fss
, NULL
);
7957 err
= OpenMovieFile (&fss
, &refnum
, fsRdPerm
);
7960 err
= NewMovieFromFile (&movie
, refnum
, NULL
, NULL
, 0, NULL
);
7961 CloseMovieFile (refnum
);
7964 image_error ("Error reading `%s'", file
, Qnil
);
7970 /* Memory source! */
7972 long file_type_atom
[3];
7974 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
7977 image_error ("Cannot allocate data handle for `%s'",
7982 file_type_atom
[0] = EndianU32_NtoB (sizeof (long) * 3);
7983 file_type_atom
[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType
);
7984 file_type_atom
[2] = EndianU32_NtoB (kQTFileTypeGIF
);
7985 err
= PtrToHand (&dh
, &dref
, sizeof (Handle
));
7988 err
= PtrAndHand ("\p", dref
, 1);
7990 err
= PtrAndHand (file_type_atom
, dref
, sizeof (long) * 3);
7993 image_error ("Cannot allocate handle data ref for `%s'", img
->spec
, Qnil
);
7996 err
= CanQuickTimeOpenDataRef (dref
, HandleDataHandlerSubType
, &graphic_p
,
7997 &movie_p
, &prefer_graphic_p
, 0);
8001 if (!graphic_p
&& !movie_p
)
8003 if (prefer_graphic_p
)
8007 DisposeHandle (dref
);
8008 success_p
= image_load_qt_1 (f
, img
, kQTFileTypeGIF
, NULL
, dh
);
8012 err
= NewMovieFromDataRef (&movie
, 0, NULL
, dref
,
8013 HandleDataHandlerSubType
);
8014 DisposeHandle (dref
);
8019 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
8020 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
8021 track
= GetMovieIndTrack (movie
, 1);
8022 media
= GetTrackMedia (track
);
8023 nsamples
= GetMediaSampleCount (media
);
8024 if (ino
>= nsamples
)
8026 image_error ("Invalid image number `%s' in image `%s'",
8030 time_scale
= GetMediaTimeScale (media
);
8032 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8033 if (!STRINGP (specified_bg
) ||
8034 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
8036 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8037 color
.red
= RED16_FROM_ULONG (color
.pixel
);
8038 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
8039 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
8041 GetMovieBox (movie
, &rect
);
8042 width
= img
->width
= rect
.right
- rect
.left
;
8043 height
= img
->height
= rect
.bottom
- rect
.top
;
8044 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8047 GetGWorld (&old_port
, &old_gdh
);
8048 SetGWorld (ximg
, NULL
);
8049 bg_color
.red
= color
.red
;
8050 bg_color
.green
= color
.green
;
8051 bg_color
.blue
= color
.blue
;
8052 RGBBackColor (&bg_color
);
8053 SetGWorld (old_port
, old_gdh
);
8054 SetMovieActive (movie
, 1);
8055 SetMovieGWorld (movie
, ximg
, NULL
);
8056 SampleNumToMediaTime (media
, ino
+ 1, &time
, &duration
);
8057 SetMovieTimeValue (movie
, time
);
8058 MoviesTask (movie
, 0L);
8059 DisposeTrackMedia (media
);
8060 DisposeMovieTrack (track
);
8061 DisposeMovie (movie
);
8065 /* Save GIF image extension data for `image-extension-data'.
8066 Format is (count IMAGES 0xf9 GRAPHIC_CONTROL_EXTENSION_BLOCK). */
8068 Lisp_Object gce
= make_uninit_string (4);
8069 int centisec
= ((float)duration
/ time_scale
) * 100.0f
+ 0.5f
;
8071 /* Fill the delay time field. */
8072 SSET (gce
, 1, centisec
& 0xff);
8073 SSET (gce
, 2, (centisec
>> 8) & 0xff);
8074 /* We don't know about other fields. */
8078 img
->data
.lisp_val
= list4 (Qcount
, make_number (nsamples
),
8079 make_number (0xf9), gce
);
8082 /* Maybe fill in the background field while we have ximg handy. */
8083 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
8084 IMAGE_BACKGROUND (img
, f
, ximg
);
8086 /* Put the image into the pixmap. */
8087 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8088 x_destroy_x_image (ximg
);
8092 image_error ("Cannot open `%s'", file
, Qnil
);
8095 DisposeTrackMedia (media
);
8097 DisposeMovieTrack (track
);
8099 DisposeMovie (movie
);
8106 #endif /* HAVE_GIF */
8110 /***********************************************************************
8112 ***********************************************************************/
8114 #ifdef HAVE_X_WINDOWS
8115 #define HAVE_GHOSTSCRIPT 1
8116 #endif /* HAVE_X_WINDOWS */
8118 /* The symbol `postscript' identifying images of this type. */
8120 Lisp_Object Qpostscript
;
8122 #ifdef HAVE_GHOSTSCRIPT
8124 static int gs_image_p
P_ ((Lisp_Object object
));
8125 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
8126 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
8128 /* Keyword symbols. */
8130 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8132 /* Indices of image specification fields in gs_format, below. */
8134 enum gs_keyword_index
8152 /* Vector of image_keyword structures describing the format
8153 of valid user-defined image specifications. */
8155 static struct image_keyword gs_format
[GS_LAST
] =
8157 {":type", IMAGE_SYMBOL_VALUE
, 1},
8158 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8159 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8160 {":file", IMAGE_STRING_VALUE
, 1},
8161 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8162 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8163 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8164 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8165 {":relief", IMAGE_INTEGER_VALUE
, 0},
8166 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8167 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8168 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8169 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8172 /* Structure describing the image type `ghostscript'. */
8174 static struct image_type gs_type
=
8184 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8187 gs_clear_image (f
, img
)
8191 /* IMG->data.ptr_val may contain a recorded colormap. */
8192 xfree (img
->data
.ptr_val
);
8193 x_clear_image (f
, img
);
8197 /* Return non-zero if OBJECT is a valid Ghostscript image
8204 struct image_keyword fmt
[GS_LAST
];
8208 bcopy (gs_format
, fmt
, sizeof fmt
);
8210 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8213 /* Bounding box must be a list or vector containing 4 integers. */
8214 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8217 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8218 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8223 else if (VECTORP (tem
))
8225 if (XVECTOR (tem
)->size
!= 4)
8227 for (i
= 0; i
< 4; ++i
)
8228 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8238 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8247 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8248 struct gcpro gcpro1
, gcpro2
;
8250 double in_width
, in_height
;
8251 Lisp_Object pixel_colors
= Qnil
;
8253 /* Compute pixel size of pixmap needed from the given size in the
8254 image specification. Sizes in the specification are in pt. 1 pt
8255 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8257 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8258 in_width
= XFASTINT (pt_width
) / 72.0;
8259 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8260 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8261 in_height
= XFASTINT (pt_height
) / 72.0;
8262 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8264 if (!check_image_size (f
, img
->width
, img
->height
))
8266 image_error ("Invalid image size", Qnil
, Qnil
);
8270 /* Create the pixmap. */
8271 xassert (img
->pixmap
== NO_PIXMAP
);
8273 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8275 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8276 img
->width
, img
->height
,
8277 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8282 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8286 /* Call the loader to fill the pixmap. It returns a process object
8287 if successful. We do not record_unwind_protect here because
8288 other places in redisplay like calling window scroll functions
8289 don't either. Let the Lisp loader use `unwind-protect' instead. */
8290 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
8292 sprintf (buffer
, "%lu %lu",
8293 (unsigned long) FRAME_X_WINDOW (f
),
8294 (unsigned long) img
->pixmap
);
8295 window_and_pixmap_id
= build_string (buffer
);
8297 sprintf (buffer
, "%lu %lu",
8298 FRAME_FOREGROUND_PIXEL (f
),
8299 FRAME_BACKGROUND_PIXEL (f
));
8300 pixel_colors
= build_string (buffer
);
8302 XSETFRAME (frame
, f
);
8303 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8305 loader
= intern ("gs-load-image");
8307 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8308 make_number (img
->width
),
8309 make_number (img
->height
),
8310 window_and_pixmap_id
,
8313 return PROCESSP (img
->data
.lisp_val
);
8317 /* Kill the Ghostscript process that was started to fill PIXMAP on
8318 frame F. Called from XTread_socket when receiving an event
8319 telling Emacs that Ghostscript has finished drawing. */
8322 x_kill_gs_process (pixmap
, f
)
8326 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
8330 /* Find the image containing PIXMAP. */
8331 for (i
= 0; i
< c
->used
; ++i
)
8332 if (c
->images
[i
]->pixmap
== pixmap
)
8335 /* Should someone in between have cleared the image cache, for
8336 instance, give up. */
8340 /* Kill the GS process. We should have found PIXMAP in the image
8341 cache and its image should contain a process object. */
8343 xassert (PROCESSP (img
->data
.lisp_val
));
8344 Fkill_process (img
->data
.lisp_val
, Qnil
);
8345 img
->data
.lisp_val
= Qnil
;
8347 #if defined (HAVE_X_WINDOWS)
8349 /* On displays with a mutable colormap, figure out the colors
8350 allocated for the image by looking at the pixels of an XImage for
8352 class = FRAME_X_VISUAL (f
)->class;
8353 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8359 /* Try to get an XImage for img->pixmep. */
8360 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8361 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8366 /* Initialize the color table. */
8367 init_color_table ();
8369 /* For each pixel of the image, look its color up in the
8370 color table. After having done so, the color table will
8371 contain an entry for each color used by the image. */
8372 for (y
= 0; y
< img
->height
; ++y
)
8373 for (x
= 0; x
< img
->width
; ++x
)
8375 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8376 lookup_pixel_color (f
, pixel
);
8379 /* Record colors in the image. Free color table and XImage. */
8380 #ifdef COLOR_TABLE_SUPPORT
8381 img
->colors
= colors_in_color_table (&img
->ncolors
);
8382 free_color_table ();
8384 XDestroyImage (ximg
);
8386 #if 0 /* This doesn't seem to be the case. If we free the colors
8387 here, we get a BadAccess later in x_clear_image when
8388 freeing the colors. */
8389 /* We have allocated colors once, but Ghostscript has also
8390 allocated colors on behalf of us. So, to get the
8391 reference counts right, free them once. */
8393 x_free_colors (f
, img
->colors
, img
->ncolors
);
8397 image_error ("Cannot get X image of `%s'; colors will not be freed",
8402 #endif /* HAVE_X_WINDOWS */
8404 /* Now that we have the pixmap, compute mask and transform the
8405 image if requested. */
8407 postprocess_image (f
, img
);
8411 #endif /* HAVE_GHOSTSCRIPT */
8414 /***********************************************************************
8416 ***********************************************************************/
8420 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8421 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8425 return valid_image_p (spec
) ? Qt
: Qnil
;
8429 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8435 if (valid_image_p (spec
))
8436 id
= lookup_image (SELECTED_FRAME (), spec
);
8439 return make_number (id
);
8442 #endif /* GLYPH_DEBUG != 0 */
8445 /***********************************************************************
8447 ***********************************************************************/
8450 /* Image types that rely on external libraries are loaded dynamically
8451 if the library is available. */
8452 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8453 define_image_type (image_type, init_lib_fn (libraries))
8455 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8456 define_image_type (image_type, 1)
8457 #endif /* HAVE_NTGUI */
8459 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8460 doc
: /* Initialize image library implementing image type TYPE.
8461 Return non-nil if TYPE is a supported image type.
8463 Image types pbm and xbm are prebuilt; other types are loaded here.
8464 Libraries to load are specified in alist LIBRARIES (usually, the value
8465 of `image-library-alist', which see). */)
8467 Lisp_Object type
, libraries
;
8471 /* Don't try to reload the library. */
8472 tested
= Fassq (type
, Vimage_type_cache
);
8474 return XCDR (tested
);
8476 #if defined (HAVE_XPM) || defined (MAC_OS)
8477 if (EQ (type
, Qxpm
))
8478 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8481 #if defined (HAVE_JPEG) || defined (MAC_OS)
8482 if (EQ (type
, Qjpeg
))
8483 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8486 #if defined (HAVE_TIFF) || defined (MAC_OS)
8487 if (EQ (type
, Qtiff
))
8488 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8491 #if defined (HAVE_GIF) || defined (MAC_OS)
8492 if (EQ (type
, Qgif
))
8493 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8496 #if defined (HAVE_PNG) || defined (MAC_OS)
8497 if (EQ (type
, Qpng
))
8498 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8501 #ifdef HAVE_GHOSTSCRIPT
8502 if (EQ (type
, Qpostscript
))
8503 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8506 /* If the type is not recognized, avoid testing it ever again. */
8507 CACHE_IMAGE_TYPE (type
, Qnil
);
8514 extern Lisp_Object Qrisky_local_variable
; /* Syms_of_xdisp has already run. */
8516 /* Initialize this only once, since that's what we do with Vimage_types
8517 and they are supposed to be in sync. Initializing here gives correct
8518 operation on GNU/Linux of calling dump-emacs after loading some images. */
8521 /* Must be defined now becase we're going to update it below, while
8522 defining the supported image types. */
8523 DEFVAR_LISP ("image-types", &Vimage_types
,
8524 doc
: /* List of potentially supported image types.
8525 Each element of the list is a symbol for a image type, like 'jpeg or 'png.
8526 To check whether it is really supported, use `image-type-available-p'. */);
8527 Vimage_types
= Qnil
;
8529 DEFVAR_LISP ("image-library-alist", &Vimage_library_alist
,
8530 doc
: /* Alist of image types vs external libraries needed to display them.
8532 Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol
8533 representing a supported image type, and the rest are strings giving
8534 alternate filenames for the corresponding external libraries.
8536 Emacs tries to load the libraries in the order they appear on the
8537 list; if none is loaded, the running session of Emacs won't
8538 support the image type. Types 'pbm and 'xbm don't need to be
8539 listed; they're always supported. */);
8540 Vimage_library_alist
= Qnil
;
8541 Fput (intern ("image-library-alist"), Qrisky_local_variable
, Qt
);
8543 DEFVAR_LISP ("max-image-size", &Vmax_image_size
,
8544 doc
: /* Maximum size of images.
8545 Emacs will not load an image into memory if its pixel width or
8546 pixel height exceeds this limit.
8548 If the value is an integer, it directly specifies the maximum
8549 image height and width, measured in pixels. If it is a floating
8550 point number, it specifies the maximum image height and width
8551 as a ratio to the frame height and width. If the value is
8552 non-numeric, there is no explicit limit on the size of images. */);
8553 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8555 Vimage_type_cache
= Qnil
;
8556 staticpro (&Vimage_type_cache
);
8558 Qpbm
= intern ("pbm");
8560 ADD_IMAGE_TYPE(Qpbm
);
8562 Qxbm
= intern ("xbm");
8564 ADD_IMAGE_TYPE(Qxbm
);
8566 define_image_type (&xbm_type
, 1);
8567 define_image_type (&pbm_type
, 1);
8569 QCascent
= intern (":ascent");
8570 staticpro (&QCascent
);
8571 QCmargin
= intern (":margin");
8572 staticpro (&QCmargin
);
8573 QCrelief
= intern (":relief");
8574 staticpro (&QCrelief
);
8575 QCconversion
= intern (":conversion");
8576 staticpro (&QCconversion
);
8577 QCcolor_symbols
= intern (":color-symbols");
8578 staticpro (&QCcolor_symbols
);
8579 QCheuristic_mask
= intern (":heuristic-mask");
8580 staticpro (&QCheuristic_mask
);
8581 QCindex
= intern (":index");
8582 staticpro (&QCindex
);
8583 QCmatrix
= intern (":matrix");
8584 staticpro (&QCmatrix
);
8585 QCcolor_adjustment
= intern (":color-adjustment");
8586 staticpro (&QCcolor_adjustment
);
8587 QCmask
= intern (":mask");
8588 staticpro (&QCmask
);
8590 Qlaplace
= intern ("laplace");
8591 staticpro (&Qlaplace
);
8592 Qemboss
= intern ("emboss");
8593 staticpro (&Qemboss
);
8594 Qedge_detection
= intern ("edge-detection");
8595 staticpro (&Qedge_detection
);
8596 Qheuristic
= intern ("heuristic");
8597 staticpro (&Qheuristic
);
8599 Qpostscript
= intern ("postscript");
8600 staticpro (&Qpostscript
);
8601 #ifdef HAVE_GHOSTSCRIPT
8602 ADD_IMAGE_TYPE(Qpostscript
);
8603 QCloader
= intern (":loader");
8604 staticpro (&QCloader
);
8605 QCbounding_box
= intern (":bounding-box");
8606 staticpro (&QCbounding_box
);
8607 QCpt_width
= intern (":pt-width");
8608 staticpro (&QCpt_width
);
8609 QCpt_height
= intern (":pt-height");
8610 staticpro (&QCpt_height
);
8611 #endif /* HAVE_GHOSTSCRIPT */
8613 #if defined (HAVE_XPM) || defined (MAC_OS)
8614 Qxpm
= intern ("xpm");
8616 ADD_IMAGE_TYPE(Qxpm
);
8619 #if defined (HAVE_JPEG) || defined (MAC_OS)
8620 Qjpeg
= intern ("jpeg");
8622 ADD_IMAGE_TYPE(Qjpeg
);
8625 #if defined (HAVE_TIFF) || defined (MAC_OS)
8626 Qtiff
= intern ("tiff");
8628 ADD_IMAGE_TYPE(Qtiff
);
8631 #if defined (HAVE_GIF) || defined (MAC_OS)
8632 Qgif
= intern ("gif");
8634 ADD_IMAGE_TYPE(Qgif
);
8637 #if defined (HAVE_PNG) || defined (MAC_OS)
8638 Qpng
= intern ("png");
8640 ADD_IMAGE_TYPE(Qpng
);
8643 defsubr (&Sinit_image_library
);
8644 defsubr (&Sclear_image_cache
);
8645 defsubr (&Simage_size
);
8646 defsubr (&Simage_mask_p
);
8647 defsubr (&Simage_extension_data
);
8651 defsubr (&Slookup_image
);
8654 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8655 doc
: /* Non-nil means always draw a cross over disabled images.
8656 Disabled images are those having an `:conversion disabled' property.
8657 A cross is always drawn on black & white displays. */);
8658 cross_disabled_images
= 0;
8660 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8661 doc
: /* List of directories to search for window system bitmap files. */);
8662 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8664 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8665 doc
: /* Time after which cached images are removed from the cache.
8666 When an image has not been displayed this many seconds, remove it
8667 from the image cache. Value must be an integer or nil with nil
8668 meaning don't clear the cache. */);
8669 Vimage_cache_eviction_delay
= make_number (30 * 60);
8675 #if defined (MAC_OSX) && TARGET_API_MAC_CARBON
8676 init_image_func_pointer ();
8680 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8681 (do not change this comment) */