1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
31 /* This makes the fields of a Display accessible, in Xlib header files. */
33 #define XLIB_ILLEGAL_ACCESS
38 #include "dispextern.h"
39 #include "blockinput.h"
48 #include <sys/types.h>
51 #define COLOR_TABLE_SUPPORT 1
53 typedef struct x_bitmap_record Bitmap_Record
;
54 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
55 #define NO_PIXMAP None
57 #define RGB_PIXEL_COLOR unsigned long
59 #define PIX_MASK_RETAIN 0
60 #define PIX_MASK_DRAW 1
61 #endif /* HAVE_X_WINDOWS */
67 /* W32_TODO : Color tables on W32. */
68 #undef COLOR_TABLE_SUPPORT
70 typedef struct w32_bitmap_record Bitmap_Record
;
71 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
74 #define RGB_PIXEL_COLOR COLORREF
76 #define PIX_MASK_RETAIN 0
77 #define PIX_MASK_DRAW 1
79 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
80 #define x_defined_color w32_defined_color
81 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
82 #endif /* HAVE_NTGUI */
90 #include <sys/param.h>
92 #if TARGET_API_MAC_CARBON
94 #include <QuickTime/QuickTime.h>
95 #else /* not MAC_OSX */
96 #include <QuickTime.h>
97 #endif /* not MAC_OSX */
98 #else /* not TARGET_API_MAC_CARBON */
101 #include <TextUtils.h>
102 #include <ImageCompression.h>
103 #include <QuickTimeComponents.h>
104 #endif /* not TARGET_API_MAC_CARBON */
106 /* MAC_TODO : Color tables on Mac. */
107 #undef COLOR_TABLE_SUPPORT
109 #define ZPixmap 0 /* arbitrary */
110 typedef struct mac_bitmap_record Bitmap_Record
;
112 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
115 #define RGB_PIXEL_COLOR unsigned long
117 /* A black pixel in a mask bitmap/pixmap means ``draw a source
118 pixel''. A white pixel means ``retain the current pixel''. */
119 #define PIX_MASK_DRAW RGB_TO_ULONG(0,0,0)
120 #define PIX_MASK_RETAIN RGB_TO_ULONG(255,255,255)
122 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
123 #define x_defined_color mac_defined_color
124 #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes)
129 /* Search path for bitmap files. */
131 Lisp_Object Vx_bitmap_file_path
;
134 static void x_disable_image
P_ ((struct frame
*, struct image
*));
135 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
138 static void init_color_table
P_ ((void));
139 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
140 #ifdef COLOR_TABLE_SUPPORT
141 static void free_color_table
P_ ((void));
142 static unsigned long *colors_in_color_table
P_ ((int *n
));
143 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
146 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
147 id, which is just an int that this section returns. Bitmaps are
148 reference counted so they can be shared among frames.
150 Bitmap indices are guaranteed to be > 0, so a negative number can
151 be used to indicate no bitmap.
153 If you use x_create_bitmap_from_data, then you must keep track of
154 the bitmaps yourself. That is, creating a bitmap from the same
155 data more than once will not be caught. */
160 XGetImage (display
, pixmap
, x
, y
, width
, height
, plane_mask
, format
)
161 Display
*display
; /* not used */
163 int x
, y
; /* not used */
164 unsigned int width
, height
; /* not used */
165 unsigned long plane_mask
; /* not used */
166 int format
; /* not used */
169 xassert (x
== 0 && y
== 0);
172 SetRect (&ri
, 0, 0, width
, height
);
173 xassert (EqualRect (&ri
, GetPixBounds (GetGWorldPixMap (pixmap
), &rp
)));
175 xassert (! (pixelsLocked
& GetPixelsState (GetGWorldPixMap (pixmap
))));
178 LockPixels (GetGWorldPixMap (pixmap
));
184 XPutPixel (ximage
, x
, y
, pixel
)
189 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
190 short depth
= GetPixDepth (pixmap
);
192 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
195 char *base_addr
= GetPixBaseAddr (pixmap
);
196 short row_bytes
= GetPixRowBytes (pixmap
);
198 ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] = 0xff000000 | pixel
;
204 char *base_addr
= GetPixBaseAddr (pixmap
);
205 short row_bytes
= GetPixRowBytes (pixmap
);
207 if (pixel
== PIX_MASK_DRAW
)
208 base_addr
[y
* row_bytes
+ x
/ 8] |= (1 << 7) >> (x
& 7);
210 base_addr
[y
* row_bytes
+ x
/ 8] &= ~((1 << 7) >> (x
& 7));
218 GetGWorld (&old_port
, &old_gdh
);
219 SetGWorld (ximage
, NULL
);
221 color
.red
= RED16_FROM_ULONG (pixel
);
222 color
.green
= GREEN16_FROM_ULONG (pixel
);
223 color
.blue
= BLUE16_FROM_ULONG (pixel
);
225 SetCPixel (x
, y
, &color
);
227 SetGWorld (old_port
, old_gdh
);
232 XGetPixel (ximage
, x
, y
)
236 PixMapHandle pixmap
= GetGWorldPixMap (ximage
);
237 short depth
= GetPixDepth (pixmap
);
239 #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING
242 char *base_addr
= GetPixBaseAddr (pixmap
);
243 short row_bytes
= GetPixRowBytes (pixmap
);
245 return ((unsigned long *) (base_addr
+ y
* row_bytes
))[x
] & 0x00ffffff;
251 char *base_addr
= GetPixBaseAddr (pixmap
);
252 short row_bytes
= GetPixRowBytes (pixmap
);
254 if (base_addr
[y
* row_bytes
+ x
/ 8] & (1 << (~x
& 7)))
255 return PIX_MASK_DRAW
;
257 return PIX_MASK_RETAIN
;
265 GetGWorld (&old_port
, &old_gdh
);
266 SetGWorld (ximage
, NULL
);
268 GetCPixel (x
, y
, &color
);
270 SetGWorld (old_port
, old_gdh
);
271 return RGB_TO_ULONG (color
.red
>> 8, color
.green
>> 8, color
.blue
>> 8);
279 UnlockPixels (GetGWorldPixMap (ximg
));
284 mac_create_cg_image_from_image (f
, img
)
289 CGImageRef result
= NULL
;
296 mask
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
297 img
->width
, img
->height
, 1);
304 GetGWorld (&old_port
, &old_gdh
);
305 SetGWorld (mask
, NULL
);
306 BackColor (blackColor
); /* Don't mask. */
307 SetRect (&r
, 0, 0, img
->width
, img
->height
);
309 SetGWorld (old_port
, old_gdh
);
314 CreateCGImageFromPixMaps (GetGWorldPixMap (img
->pixmap
),
315 GetGWorldPixMap (mask
), &result
);
316 if (mask
!= img
->mask
)
317 XFreePixmap (FRAME_X_DISPLAY (f
), mask
);
323 #endif /* USE_CG_DRAWING */
327 /* Functions to access the contents of a bitmap, given an id. */
330 x_bitmap_height (f
, id
)
334 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
338 x_bitmap_width (f
, id
)
342 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
345 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
347 x_bitmap_pixmap (f
, id
)
351 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
355 #ifdef HAVE_X_WINDOWS
357 x_bitmap_mask (f
, id
)
361 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
365 /* Allocate a new bitmap record. Returns index of new record. */
368 x_allocate_bitmap_record (f
)
371 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
374 if (dpyinfo
->bitmaps
== NULL
)
376 dpyinfo
->bitmaps_size
= 10;
378 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
379 dpyinfo
->bitmaps_last
= 1;
383 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
384 return ++dpyinfo
->bitmaps_last
;
386 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
387 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
390 dpyinfo
->bitmaps_size
*= 2;
392 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
393 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
394 return ++dpyinfo
->bitmaps_last
;
397 /* Add one reference to the reference count of the bitmap with id ID. */
400 x_reference_bitmap (f
, id
)
404 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
407 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
410 x_create_bitmap_from_data (f
, bits
, width
, height
)
413 unsigned int width
, height
;
415 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
418 #ifdef HAVE_X_WINDOWS
420 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
421 bits
, width
, height
);
424 #endif /* HAVE_X_WINDOWS */
428 bitmap
= CreateBitmap (width
, height
,
429 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
430 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
434 #endif /* HAVE_NTGUI */
437 /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */
442 id
= x_allocate_bitmap_record (f
);
444 dpyinfo
->bitmaps
[id
- 1].bitmap_data
= (char *) xmalloc (height
* width
);
445 bcopy (bits
, dpyinfo
->bitmaps
[id
- 1].bitmap_data
, height
* width
);
448 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
449 dpyinfo
->bitmaps
[id
- 1].height
= height
;
450 dpyinfo
->bitmaps
[id
- 1].width
= width
;
451 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
453 #ifdef HAVE_X_WINDOWS
454 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
455 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
456 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
457 #endif /* HAVE_X_WINDOWS */
460 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
461 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
462 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
463 #endif /* HAVE_NTGUI */
468 /* Create bitmap from file FILE for frame F. */
471 x_create_bitmap_from_file (f
, file
)
476 return -1; /* MAC_TODO : bitmap support */
480 return -1; /* W32_TODO : bitmap support */
481 #endif /* HAVE_NTGUI */
483 #ifdef HAVE_X_WINDOWS
484 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
485 unsigned int width
, height
;
487 int xhot
, yhot
, result
, id
;
492 /* Look for an existing bitmap with the same name. */
493 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
495 if (dpyinfo
->bitmaps
[id
].refcount
496 && dpyinfo
->bitmaps
[id
].file
497 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
499 ++dpyinfo
->bitmaps
[id
].refcount
;
504 /* Search bitmap-file-path for the file, if appropriate. */
505 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
510 filename
= (char *) SDATA (found
);
512 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
513 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
514 if (result
!= BitmapSuccess
)
517 id
= x_allocate_bitmap_record (f
);
518 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
519 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
520 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
521 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
522 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
523 dpyinfo
->bitmaps
[id
- 1].height
= height
;
524 dpyinfo
->bitmaps
[id
- 1].width
= width
;
525 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
528 #endif /* HAVE_X_WINDOWS */
534 Free_Bitmap_Record (dpyinfo
, bm
)
535 Display_Info
*dpyinfo
;
538 #ifdef HAVE_X_WINDOWS
539 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
541 XFreePixmap (dpyinfo
->display
, bm
->mask
);
542 #endif /* HAVE_X_WINDOWS */
545 DeleteObject (bm
->pixmap
);
546 #endif /* HAVE_NTGUI */
549 xfree (bm
->bitmap_data
); /* Added ++kfs */
550 bm
->bitmap_data
= NULL
;
560 /* Remove reference to bitmap with id number ID. */
563 x_destroy_bitmap (f
, id
)
567 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
571 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
573 if (--bm
->refcount
== 0)
576 Free_Bitmap_Record (dpyinfo
, bm
);
582 /* Free all the bitmaps for the display specified by DPYINFO. */
585 x_destroy_all_bitmaps (dpyinfo
)
586 Display_Info
*dpyinfo
;
589 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
591 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
592 if (bm
->refcount
> 0)
593 Free_Bitmap_Record (dpyinfo
, bm
);
595 dpyinfo
->bitmaps_last
= 0;
599 #ifdef HAVE_X_WINDOWS
601 /* Useful functions defined in the section
602 `Image type independent image structures' below. */
604 static unsigned long four_corners_best
P_ ((XImagePtr ximg
,
607 unsigned long height
));
609 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
610 int depth
, XImagePtr
*ximg
,
613 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
616 /* Create a mask of a bitmap. Note is this not a perfect mask.
617 It's nicer with some borders in this context */
620 x_create_bitmap_mask (f
, id
)
625 XImagePtr ximg
, mask_img
;
626 unsigned long width
, height
;
629 unsigned long x
, y
, xp
, xm
, yp
, ym
;
632 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
637 pixmap
= x_bitmap_pixmap (f
, id
);
638 width
= x_bitmap_width (f
, id
);
639 height
= x_bitmap_height (f
, id
);
642 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
651 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
656 XDestroyImage (ximg
);
660 bg
= four_corners_best (ximg
, NULL
, width
, height
);
662 for (y
= 0; y
< ximg
->height
; ++y
)
664 for (x
= 0; x
< ximg
->width
; ++x
)
666 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
667 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
668 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
669 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
670 if (XGetPixel (ximg
, x
, y
) == bg
671 && XGetPixel (ximg
, x
, yp
) == bg
672 && XGetPixel (ximg
, x
, ym
) == bg
673 && XGetPixel (ximg
, xp
, y
) == bg
674 && XGetPixel (ximg
, xp
, yp
) == bg
675 && XGetPixel (ximg
, xp
, ym
) == bg
676 && XGetPixel (ximg
, xm
, y
) == bg
677 && XGetPixel (ximg
, xm
, yp
) == bg
678 && XGetPixel (ximg
, xm
, ym
) == bg
)
679 XPutPixel (mask_img
, x
, y
, 0);
681 XPutPixel (mask_img
, x
, y
, 1);
685 xassert (interrupt_input_blocked
);
686 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
687 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
689 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
691 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
692 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
694 XDestroyImage (ximg
);
695 x_destroy_x_image (mask_img
);
700 #endif /* HAVE_X_WINDOWS */
703 /***********************************************************************
705 ***********************************************************************/
707 /* Value is the number of elements of vector VECTOR. */
709 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
711 /* List of supported image types. Use define_image_type to add new
712 types. Use lookup_image_type to find a type for a given symbol. */
714 static struct image_type
*image_types
;
716 /* A list of symbols, one for each supported image type. */
718 Lisp_Object Vimage_types
;
720 /* An alist of image types and libraries that implement the type. */
722 Lisp_Object Vimage_library_alist
;
724 /* Cache for delayed-loading image types. */
726 static Lisp_Object Vimage_type_cache
;
728 /* The symbol `xbm' which is used as the type symbol for XBM images. */
734 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
735 extern Lisp_Object QCdata
, QCtype
, Qcount
;
736 extern Lisp_Object Qcenter
;
737 Lisp_Object QCascent
, QCmargin
, QCrelief
;
738 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
739 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
743 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
745 /* Time in seconds after which images should be removed from the cache
748 Lisp_Object Vimage_cache_eviction_delay
;
750 /* Function prototypes. */
752 static Lisp_Object define_image_type
P_ ((struct image_type
*type
, int loaded
));
753 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
754 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
755 static void x_laplace
P_ ((struct frame
*, struct image
*));
756 static void x_emboss
P_ ((struct frame
*, struct image
*));
757 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
760 #define CACHE_IMAGE_TYPE(type, status) \
761 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
763 #define ADD_IMAGE_TYPE(type) \
764 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
766 /* Define a new image type from TYPE. This adds a copy of TYPE to
767 image_types and caches the loading status of TYPE. */
770 define_image_type (type
, loaded
)
771 struct image_type
*type
;
780 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
781 The initialized data segment is read-only. */
782 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
783 bcopy (type
, p
, sizeof *p
);
784 p
->next
= image_types
;
789 CACHE_IMAGE_TYPE (*type
->type
, success
);
794 /* Look up image type SYMBOL, and return a pointer to its image_type
795 structure. Value is null if SYMBOL is not a known image type. */
797 static INLINE
struct image_type
*
798 lookup_image_type (symbol
)
801 struct image_type
*type
;
803 /* We must initialize the image-type if it hasn't been already. */
804 if (NILP (Finit_image_library (symbol
, Vimage_library_alist
)))
805 return 0; /* unimplemented */
807 for (type
= image_types
; type
; type
= type
->next
)
808 if (EQ (symbol
, *type
->type
))
815 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
816 valid image specification is a list whose car is the symbol
817 `image', and whose rest is a property list. The property list must
818 contain a value for key `:type'. That value must be the name of a
819 supported image type. The rest of the property list depends on the
823 valid_image_p (object
)
832 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
833 if (EQ (XCAR (tem
), QCtype
))
836 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
838 struct image_type
*type
;
839 type
= lookup_image_type (XCAR (tem
));
841 valid_p
= type
->valid_p (object
);
852 /* Log error message with format string FORMAT and argument ARG.
853 Signaling an error, e.g. when an image cannot be loaded, is not a
854 good idea because this would interrupt redisplay, and the error
855 message display would lead to another redisplay. This function
856 therefore simply displays a message. */
859 image_error (format
, arg1
, arg2
)
861 Lisp_Object arg1
, arg2
;
863 add_to_log (format
, arg1
, arg2
);
868 /***********************************************************************
870 ***********************************************************************/
872 enum image_value_type
874 IMAGE_DONT_CHECK_VALUE_TYPE
,
876 IMAGE_STRING_OR_NIL_VALUE
,
878 IMAGE_POSITIVE_INTEGER_VALUE
,
879 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
880 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
883 IMAGE_FUNCTION_VALUE
,
888 /* Structure used when parsing image specifications. */
892 /* Name of keyword. */
895 /* The type of value allowed. */
896 enum image_value_type type
;
898 /* Non-zero means key must be present. */
901 /* Used to recognize duplicate keywords in a property list. */
904 /* The value that was found. */
909 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
911 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
914 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
915 has the format (image KEYWORD VALUE ...). One of the keyword/
916 value pairs must be `:type TYPE'. KEYWORDS is a vector of
917 image_keywords structures of size NKEYWORDS describing other
918 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
921 parse_image_spec (spec
, keywords
, nkeywords
, type
)
923 struct image_keyword
*keywords
;
934 while (CONSP (plist
))
936 Lisp_Object key
, value
;
938 /* First element of a pair must be a symbol. */
940 plist
= XCDR (plist
);
944 /* There must follow a value. */
947 value
= XCAR (plist
);
948 plist
= XCDR (plist
);
950 /* Find key in KEYWORDS. Error if not found. */
951 for (i
= 0; i
< nkeywords
; ++i
)
952 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
958 /* Record that we recognized the keyword. If a keywords
959 was found more than once, it's an error. */
960 keywords
[i
].value
= value
;
963 if (keywords
[i
].count
> 1)
966 /* Check type of value against allowed type. */
967 switch (keywords
[i
].type
)
969 case IMAGE_STRING_VALUE
:
970 if (!STRINGP (value
))
974 case IMAGE_STRING_OR_NIL_VALUE
:
975 if (!STRINGP (value
) && !NILP (value
))
979 case IMAGE_SYMBOL_VALUE
:
980 if (!SYMBOLP (value
))
984 case IMAGE_POSITIVE_INTEGER_VALUE
:
985 if (!INTEGERP (value
) || XINT (value
) <= 0)
989 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
990 if (INTEGERP (value
) && XINT (value
) >= 0)
993 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
994 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
998 case IMAGE_ASCENT_VALUE
:
999 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
1001 else if (INTEGERP (value
)
1002 && XINT (value
) >= 0
1003 && XINT (value
) <= 100)
1007 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
1008 if (!INTEGERP (value
) || XINT (value
) < 0)
1012 case IMAGE_DONT_CHECK_VALUE_TYPE
:
1015 case IMAGE_FUNCTION_VALUE
:
1016 value
= indirect_function (value
);
1018 || COMPILEDP (value
)
1019 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
1023 case IMAGE_NUMBER_VALUE
:
1024 if (!INTEGERP (value
) && !FLOATP (value
))
1028 case IMAGE_INTEGER_VALUE
:
1029 if (!INTEGERP (value
))
1033 case IMAGE_BOOL_VALUE
:
1034 if (!NILP (value
) && !EQ (value
, Qt
))
1043 if (EQ (key
, QCtype
) && !EQ (type
, value
))
1047 /* Check that all mandatory fields are present. */
1048 for (i
= 0; i
< nkeywords
; ++i
)
1049 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
1052 return NILP (plist
);
1056 /* Return the value of KEY in image specification SPEC. Value is nil
1057 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
1058 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
1061 image_spec_value (spec
, key
, found
)
1062 Lisp_Object spec
, key
;
1067 xassert (valid_image_p (spec
));
1069 for (tail
= XCDR (spec
);
1070 CONSP (tail
) && CONSP (XCDR (tail
));
1071 tail
= XCDR (XCDR (tail
)))
1073 if (EQ (XCAR (tail
), key
))
1077 return XCAR (XCDR (tail
));
1087 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
1088 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
1089 PIXELS non-nil means return the size in pixels, otherwise return the
1090 size in canonical character units.
1091 FRAME is the frame on which the image will be displayed. FRAME nil
1092 or omitted means use the selected frame. */)
1093 (spec
, pixels
, frame
)
1094 Lisp_Object spec
, pixels
, frame
;
1099 if (valid_image_p (spec
))
1101 struct frame
*f
= check_x_frame (frame
);
1102 int id
= lookup_image (f
, spec
);
1103 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1104 int width
= img
->width
+ 2 * img
->hmargin
;
1105 int height
= img
->height
+ 2 * img
->vmargin
;
1108 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
1109 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
1111 size
= Fcons (make_number (width
), make_number (height
));
1114 error ("Invalid image specification");
1120 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
1121 doc
: /* Return t if image SPEC has a mask bitmap.
1122 FRAME is the frame on which the image will be displayed. FRAME nil
1123 or omitted means use the selected frame. */)
1125 Lisp_Object spec
, frame
;
1130 if (valid_image_p (spec
))
1132 struct frame
*f
= check_x_frame (frame
);
1133 int id
= lookup_image (f
, spec
);
1134 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1139 error ("Invalid image specification");
1144 DEFUN ("image-extension-data", Fimage_extension_data
, Simage_extension_data
, 1, 2, 0,
1145 doc
: /* Return extension data for image SPEC.
1146 FRAME is the frame on which the image will be displayed. FRAME nil
1147 or omitted means use the selected frame. */)
1149 Lisp_Object spec
, frame
;
1154 if (valid_image_p (spec
))
1156 struct frame
*f
= check_x_frame (frame
);
1157 int id
= lookup_image (f
, spec
);
1158 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1159 ext
= img
->data
.lisp_val
;
1166 /***********************************************************************
1167 Image type independent image structures
1168 ***********************************************************************/
1170 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1171 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1172 static int check_image_size
P_ ((struct frame
*f
, int width
, int height
));
1174 #define MAX_IMAGE_SIZE 6.0
1175 Lisp_Object Vmax_image_size
;
1177 /* Allocate and return a new image structure for image specification
1178 SPEC. SPEC has a hash value of HASH. */
1180 static struct image
*
1181 make_image (spec
, hash
)
1185 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1187 xassert (valid_image_p (spec
));
1188 bzero (img
, sizeof *img
);
1189 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1190 xassert (img
->type
!= NULL
);
1192 img
->data
.lisp_val
= Qnil
;
1193 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1195 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1200 /* Free image IMG which was used on frame F, including its resources. */
1209 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1211 /* Remove IMG from the hash table of its cache. */
1213 img
->prev
->next
= img
->next
;
1215 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1218 img
->next
->prev
= img
->prev
;
1220 c
->images
[img
->id
] = NULL
;
1222 /* Free resources, then free IMG. */
1223 img
->type
->free (f
, img
);
1228 /* Return 1 if the given widths and heights are valid for display;
1229 otherwise, return 0. */
1232 check_image_size (f
, width
, height
)
1239 if (width
<= 0 || height
<= 0)
1242 if (INTEGERP (Vmax_image_size
))
1243 w
= h
= XINT (Vmax_image_size
);
1244 else if (FLOATP (Vmax_image_size
))
1248 w
= FRAME_PIXEL_WIDTH (f
);
1249 h
= FRAME_PIXEL_HEIGHT (f
);
1252 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1253 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1254 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1259 return (width
<= w
&& height
<= h
);
1262 /* Prepare image IMG for display on frame F. Must be called before
1263 drawing an image. */
1266 prepare_image_for_display (f
, img
)
1272 /* We're about to display IMG, so set its timestamp to `now'. */
1274 img
->timestamp
= EMACS_SECS (t
);
1276 /* If IMG doesn't have a pixmap yet, load it now, using the image
1277 type dependent loader function. */
1278 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1279 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1281 #if defined (MAC_OS) && USE_CG_DRAWING
1282 if (!img
->load_failed_p
&& img
->data
.ptr_val
== NULL
)
1284 img
->data
.ptr_val
= mac_create_cg_image_from_image (f
, img
);
1285 if (img
->data
.ptr_val
== NULL
)
1287 img
->load_failed_p
= 1;
1288 img
->type
->free (f
, img
);
1295 /* Value is the number of pixels for the ascent of image IMG when
1296 drawn in face FACE. */
1299 image_ascent (img
, face
, slice
)
1302 struct glyph_slice
*slice
;
1307 if (slice
->height
== img
->height
)
1308 height
= img
->height
+ img
->vmargin
;
1309 else if (slice
->y
== 0)
1310 height
= slice
->height
+ img
->vmargin
;
1312 height
= slice
->height
;
1314 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1319 /* W32 specific version. Why?. ++kfs */
1320 ascent
= height
/ 2 - (FONT_DESCENT(face
->font
)
1321 - FONT_BASE(face
->font
)) / 2;
1323 /* This expression is arranged so that if the image can't be
1324 exactly centered, it will be moved slightly up. This is
1325 because a typical font is `top-heavy' (due to the presence
1326 uppercase letters), so the image placement should err towards
1327 being top-heavy too. It also just generally looks better. */
1328 ascent
= (height
+ face
->font
->ascent
- face
->font
->descent
+ 1) / 2;
1329 #endif /* HAVE_NTGUI */
1332 ascent
= height
/ 2;
1335 ascent
= (int) (height
* img
->ascent
/ 100.0);
1341 /* Image background colors. */
1343 /* Find the "best" corner color of a bitmap.
1344 On W32, XIMG is assumed to a device context with the bitmap selected. */
1346 static RGB_PIXEL_COLOR
1347 four_corners_best (ximg
, corners
, width
, height
)
1348 XImagePtr_or_DC ximg
;
1350 unsigned long width
, height
;
1352 RGB_PIXEL_COLOR corner_pixels
[4], best
;
1355 if (corners
&& corners
[BOT_CORNER
] >= 0)
1357 /* Get the colors at the corner_pixels of ximg. */
1358 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1359 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1360 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1361 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1365 /* Get the colors at the corner_pixels of ximg. */
1366 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1367 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1368 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1369 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1371 /* Choose the most frequently found color as background. */
1372 for (i
= best_count
= 0; i
< 4; ++i
)
1376 for (j
= n
= 0; j
< 4; ++j
)
1377 if (corner_pixels
[i
] == corner_pixels
[j
])
1381 best
= corner_pixels
[i
], best_count
= n
;
1387 /* Portability macros */
1391 #define Destroy_Image(img_dc, prev) \
1392 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1394 #define Free_Pixmap(display, pixmap) \
1395 DeleteObject (pixmap)
1399 #define Destroy_Image(ximg, dummy) \
1400 XDestroyImage (ximg)
1402 #define Free_Pixmap(display, pixmap) \
1403 XFreePixmap (display, pixmap)
1405 #endif /* HAVE_NTGUI */
1408 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1409 it is guessed heuristically. If non-zero, XIMG is an existing
1410 XImage object (or device context with the image selected on W32) to
1411 use for the heuristic. */
1414 image_background (img
, f
, ximg
)
1417 XImagePtr_or_DC ximg
;
1419 if (! img
->background_valid
)
1420 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1422 int free_ximg
= !ximg
;
1425 #endif /* HAVE_NTGUI */
1430 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1431 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1433 HDC frame_dc
= get_frame_dc (f
);
1434 ximg
= CreateCompatibleDC (frame_dc
);
1435 release_frame_dc (f
, frame_dc
);
1436 prev
= SelectObject (ximg
, img
->pixmap
);
1437 #endif /* !HAVE_NTGUI */
1440 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1443 Destroy_Image (ximg
, prev
);
1445 img
->background_valid
= 1;
1448 return img
->background
;
1451 /* Return the `background_transparent' field of IMG. If IMG doesn't
1452 have one yet, it is guessed heuristically. If non-zero, MASK is an
1453 existing XImage object to use for the heuristic. */
1456 image_background_transparent (img
, f
, mask
)
1459 XImagePtr_or_DC mask
;
1461 if (! img
->background_transparent_valid
)
1462 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1466 int free_mask
= !mask
;
1469 #endif /* HAVE_NTGUI */
1474 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1475 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1477 HDC frame_dc
= get_frame_dc (f
);
1478 mask
= CreateCompatibleDC (frame_dc
);
1479 release_frame_dc (f
, frame_dc
);
1480 prev
= SelectObject (mask
, img
->mask
);
1481 #endif /* HAVE_NTGUI */
1484 img
->background_transparent
1485 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1488 Destroy_Image (mask
, prev
);
1491 img
->background_transparent
= 0;
1493 img
->background_transparent_valid
= 1;
1496 return img
->background_transparent
;
1500 /***********************************************************************
1501 Helper functions for X image types
1502 ***********************************************************************/
1504 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1506 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1507 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1509 Lisp_Object color_name
,
1510 unsigned long dflt
));
1513 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1514 free the pixmap if any. MASK_P non-zero means clear the mask
1515 pixmap if any. COLORS_P non-zero means free colors allocated for
1516 the image, if any. */
1519 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1522 int pixmap_p
, mask_p
, colors_p
;
1524 if (pixmap_p
&& img
->pixmap
)
1526 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1527 img
->pixmap
= NO_PIXMAP
;
1528 img
->background_valid
= 0;
1531 if (mask_p
&& img
->mask
)
1533 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1534 img
->mask
= NO_PIXMAP
;
1535 img
->background_transparent_valid
= 0;
1538 if (colors_p
&& img
->ncolors
)
1540 /* MAC_TODO: color table support. */
1541 /* W32_TODO: color table support. */
1542 #ifdef HAVE_X_WINDOWS
1543 x_free_colors (f
, img
->colors
, img
->ncolors
);
1544 #endif /* HAVE_X_WINDOWS */
1545 xfree (img
->colors
);
1550 #if defined (MAC_OS) && USE_CG_DRAWING
1551 if (img
->data
.ptr_val
)
1553 CGImageRelease (img
->data
.ptr_val
);
1554 img
->data
.ptr_val
= NULL
;
1559 /* Free X resources of image IMG which is used on frame F. */
1562 x_clear_image (f
, img
)
1567 x_clear_image_1 (f
, img
, 1, 1, 1);
1572 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1573 cannot be allocated, use DFLT. Add a newly allocated color to
1574 IMG->colors, so that it can be freed again. Value is the pixel
1577 static unsigned long
1578 x_alloc_image_color (f
, img
, color_name
, dflt
)
1581 Lisp_Object color_name
;
1585 unsigned long result
;
1587 xassert (STRINGP (color_name
));
1589 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1591 /* This isn't called frequently so we get away with simply
1592 reallocating the color vector to the needed size, here. */
1595 (unsigned long *) xrealloc (img
->colors
,
1596 img
->ncolors
* sizeof *img
->colors
);
1597 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1598 result
= color
.pixel
;
1608 /***********************************************************************
1610 ***********************************************************************/
1612 static struct image
*search_image_cache
P_ ((struct frame
*, Lisp_Object
, unsigned));
1613 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1614 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1616 /* Return a new, initialized image cache that is allocated from the
1617 heap. Call free_image_cache to free an image cache. */
1619 struct image_cache
*
1622 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1625 bzero (c
, sizeof *c
);
1627 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1628 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1629 c
->buckets
= (struct image
**) xmalloc (size
);
1630 bzero (c
->buckets
, size
);
1635 /* Find an image matching SPEC in the cache, and return it. If no
1636 image is found, return NULL. */
1637 static struct image
*
1638 search_image_cache (f
, spec
, hash
)
1644 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1645 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1647 if (!c
) return NULL
;
1649 /* If the image spec does not specify a background color, the cached
1650 image must have the same background color as the current frame.
1651 The foreground color must also match, for the sake of monochrome
1654 In fact, we could ignore the foreground color matching condition
1655 for color images, or if the image spec specifies :foreground;
1656 similarly we could ignore the background color matching condition
1657 for formats that don't use transparency (such as jpeg), or if the
1658 image spec specifies :background. However, the extra memory
1659 usage is probably negligible in practice, so we don't bother. */
1661 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1662 if (img
->hash
== hash
1663 && !NILP (Fequal (img
->spec
, spec
))
1664 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1665 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1671 /* Search frame F for an image with spec SPEC, and free it. */
1674 uncache_image (f
, spec
)
1678 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1680 free_image (f
, img
);
1684 /* Free image cache of frame F. Be aware that X frames share images
1688 free_image_cache (f
)
1691 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1696 /* Cache should not be referenced by any frame when freed. */
1697 xassert (c
->refcount
== 0);
1699 for (i
= 0; i
< c
->used
; ++i
)
1700 free_image (f
, c
->images
[i
]);
1704 FRAME_X_IMAGE_CACHE (f
) = NULL
;
1709 /* Clear image cache of frame F. FORCE_P non-zero means free all
1710 images. FORCE_P zero means clear only images that haven't been
1711 displayed for some time. Should be called from time to time to
1712 reduce the number of loaded images. If image-eviction-seconds is
1713 non-nil, this frees images in the cache which weren't displayed for
1714 at least that many seconds. */
1717 clear_image_cache (f
, force_p
)
1721 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1723 if (c
&& INTEGERP (Vimage_cache_eviction_delay
))
1730 old
= EMACS_SECS (t
) - XFASTINT (Vimage_cache_eviction_delay
);
1732 /* Block input so that we won't be interrupted by a SIGIO
1733 while being in an inconsistent state. */
1736 for (i
= nfreed
= 0; i
< c
->used
; ++i
)
1738 struct image
*img
= c
->images
[i
];
1740 && (force_p
|| img
->timestamp
< old
))
1742 free_image (f
, img
);
1747 /* We may be clearing the image cache because, for example,
1748 Emacs was iconified for a longer period of time. In that
1749 case, current matrices may still contain references to
1750 images freed above. So, clear these matrices. */
1753 Lisp_Object tail
, frame
;
1755 FOR_EACH_FRAME (tail
, frame
)
1757 struct frame
*f
= XFRAME (frame
);
1758 if (FRAME_WINDOW_P (f
)
1759 && FRAME_X_IMAGE_CACHE (f
) == c
)
1760 clear_current_matrices (f
);
1763 ++windows_or_buffers_changed
;
1771 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1773 doc
: /* Clear the image cache of FRAME.
1774 FRAME nil or omitted means use the selected frame.
1775 FRAME t means clear the image caches of all frames. */)
1783 FOR_EACH_FRAME (tail
, frame
)
1784 if (FRAME_WINDOW_P (XFRAME (frame
)))
1785 clear_image_cache (XFRAME (frame
), 1);
1788 clear_image_cache (check_x_frame (frame
), 1);
1794 DEFUN ("image-refresh", Fimage_refresh
, Simage_refresh
,
1796 doc
: /* Refresh the image with specification SPEC on frame FRAME.
1797 If SPEC specifies an image file, the displayed image is updated with
1798 the current contents of that file.
1799 FRAME nil or omitted means use the selected frame.
1800 FRAME t means refresh the image on all frames. */)
1802 Lisp_Object spec
, frame
;
1804 if (!valid_image_p (spec
))
1805 error ("Invalid image specification");
1810 FOR_EACH_FRAME (tail
, frame
)
1812 struct frame
*f
= XFRAME (frame
);
1813 if (FRAME_WINDOW_P (f
))
1814 uncache_image (f
, spec
);
1818 uncache_image (check_x_frame (frame
), spec
);
1824 /* Compute masks and transform image IMG on frame F, as specified
1825 by the image's specification, */
1828 postprocess_image (f
, img
)
1832 /* Manipulation of the image's mask. */
1835 Lisp_Object conversion
, spec
;
1840 /* `:heuristic-mask t'
1842 means build a mask heuristically.
1843 `:heuristic-mask (R G B)'
1844 `:mask (heuristic (R G B))'
1845 means build a mask from color (R G B) in the
1848 means remove a mask, if any. */
1850 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1852 x_build_heuristic_mask (f
, img
, mask
);
1857 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1859 if (EQ (mask
, Qheuristic
))
1860 x_build_heuristic_mask (f
, img
, Qt
);
1861 else if (CONSP (mask
)
1862 && EQ (XCAR (mask
), Qheuristic
))
1864 if (CONSP (XCDR (mask
)))
1865 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1867 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1869 else if (NILP (mask
) && found_p
&& img
->mask
)
1871 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1872 img
->mask
= NO_PIXMAP
;
1877 /* Should we apply an image transformation algorithm? */
1878 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1879 if (EQ (conversion
, Qdisabled
))
1880 x_disable_image (f
, img
);
1881 else if (EQ (conversion
, Qlaplace
))
1883 else if (EQ (conversion
, Qemboss
))
1885 else if (CONSP (conversion
)
1886 && EQ (XCAR (conversion
), Qedge_detection
))
1889 tem
= XCDR (conversion
);
1891 x_edge_detection (f
, img
,
1892 Fplist_get (tem
, QCmatrix
),
1893 Fplist_get (tem
, QCcolor_adjustment
));
1899 /* Return the id of image with Lisp specification SPEC on frame F.
1900 SPEC must be a valid Lisp image specification (see valid_image_p). */
1903 lookup_image (f
, spec
)
1909 struct gcpro gcpro1
;
1912 /* F must be a window-system frame, and SPEC must be a valid image
1914 xassert (FRAME_WINDOW_P (f
));
1915 xassert (valid_image_p (spec
));
1919 /* Look up SPEC in the hash table of the image cache. */
1920 hash
= sxhash (spec
, 0);
1921 img
= search_image_cache (f
, spec
, hash
);
1922 if (img
&& img
->load_failed_p
)
1924 free_image (f
, img
);
1928 /* If not found, create a new image and cache it. */
1931 extern Lisp_Object Qpostscript
;
1934 img
= make_image (spec
, hash
);
1935 cache_image (f
, img
);
1936 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1937 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1938 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1940 /* If we can't load the image, and we don't have a width and
1941 height, use some arbitrary width and height so that we can
1942 draw a rectangle for it. */
1943 if (img
->load_failed_p
)
1947 value
= image_spec_value (spec
, QCwidth
, NULL
);
1948 img
->width
= (INTEGERP (value
)
1949 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1950 value
= image_spec_value (spec
, QCheight
, NULL
);
1951 img
->height
= (INTEGERP (value
)
1952 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1956 /* Handle image type independent image attributes
1957 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1958 `:background COLOR'. */
1959 Lisp_Object ascent
, margin
, relief
, bg
;
1961 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1962 if (INTEGERP (ascent
))
1963 img
->ascent
= XFASTINT (ascent
);
1964 else if (EQ (ascent
, Qcenter
))
1965 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1967 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1968 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1969 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1970 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1971 && INTEGERP (XCDR (margin
)))
1973 if (XINT (XCAR (margin
)) > 0)
1974 img
->hmargin
= XFASTINT (XCAR (margin
));
1975 if (XINT (XCDR (margin
)) > 0)
1976 img
->vmargin
= XFASTINT (XCDR (margin
));
1979 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1980 if (INTEGERP (relief
))
1982 img
->relief
= XINT (relief
);
1983 img
->hmargin
+= abs (img
->relief
);
1984 img
->vmargin
+= abs (img
->relief
);
1987 if (! img
->background_valid
)
1989 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1993 = x_alloc_image_color (f
, img
, bg
,
1994 FRAME_BACKGROUND_PIXEL (f
));
1995 img
->background_valid
= 1;
1999 /* Do image transformations and compute masks, unless we
2000 don't have the image yet. */
2001 if (!EQ (*img
->type
->type
, Qpostscript
))
2002 postprocess_image (f
, img
);
2008 /* We're using IMG, so set its timestamp to `now'. */
2009 EMACS_GET_TIME (now
);
2010 img
->timestamp
= EMACS_SECS (now
);
2014 /* Value is the image id. */
2019 /* Cache image IMG in the image cache of frame F. */
2022 cache_image (f
, img
)
2026 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
2029 /* Find a free slot in c->images. */
2030 for (i
= 0; i
< c
->used
; ++i
)
2031 if (c
->images
[i
] == NULL
)
2034 /* If no free slot found, maybe enlarge c->images. */
2035 if (i
== c
->used
&& c
->used
== c
->size
)
2038 c
->images
= (struct image
**) xrealloc (c
->images
,
2039 c
->size
* sizeof *c
->images
);
2042 /* Add IMG to c->images, and assign IMG an id. */
2048 /* Add IMG to the cache's hash table. */
2049 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
2050 img
->next
= c
->buckets
[i
];
2052 img
->next
->prev
= img
;
2054 c
->buckets
[i
] = img
;
2058 /* Call FN on every image in the image cache of frame F. Used to mark
2059 Lisp Objects in the image cache. */
2062 forall_images_in_image_cache (f
, fn
)
2064 void (*fn
) P_ ((struct image
*img
));
2066 if (FRAME_LIVE_P (f
) && FRAME_WINDOW_P (f
))
2068 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
2072 for (i
= 0; i
< c
->used
; ++i
)
2081 /***********************************************************************
2082 X / MAC / W32 support code
2083 ***********************************************************************/
2087 /* Macro for defining functions that will be loaded from image DLLs. */
2088 #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)()
2090 /* Macro for loading those image functions from the library. */
2091 #define LOAD_IMGLIB_FN(lib,func) { \
2092 fn_##func = (void *) GetProcAddress (lib, #func); \
2093 if (!fn_##func) return 0; \
2096 /* Load a DLL implementing an image type.
2097 The `image-library-alist' variable associates a symbol,
2098 identifying an image type, to a list of possible filenames.
2099 The function returns NULL if no library could be loaded for
2100 the given image type, or if the library was previously loaded;
2101 else the handle of the DLL. */
2103 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
2105 HMODULE library
= NULL
;
2107 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
2109 Lisp_Object dlls
= Fassq (type
, libraries
);
2112 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
2114 CHECK_STRING_CAR (dlls
);
2115 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
2123 #endif /* HAVE_NTGUI */
2125 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
2126 XImagePtr
*, Pixmap
*));
2127 static void x_destroy_x_image
P_ ((XImagePtr
));
2128 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
2131 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
2132 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
2133 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
2134 via xmalloc. Print error messages via image_error if an error
2135 occurs. Value is non-zero if successful.
2137 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
2138 should indicate the bit depth of the image. */
2141 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
2143 int width
, height
, depth
;
2147 #ifdef HAVE_X_WINDOWS
2148 Display
*display
= FRAME_X_DISPLAY (f
);
2149 Window window
= FRAME_X_WINDOW (f
);
2150 Screen
*screen
= FRAME_X_SCREEN (f
);
2152 xassert (interrupt_input_blocked
);
2155 depth
= DefaultDepthOfScreen (screen
);
2156 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
2157 depth
, ZPixmap
, 0, NULL
, width
, height
,
2158 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
2161 image_error ("Unable to allocate X image", Qnil
, Qnil
);
2165 /* Allocate image raster. */
2166 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
2168 /* Allocate a pixmap of the same size. */
2169 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2170 if (*pixmap
== NO_PIXMAP
)
2172 x_destroy_x_image (*ximg
);
2174 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2179 #endif /* HAVE_X_WINDOWS */
2183 BITMAPINFOHEADER
*header
;
2185 int scanline_width_bits
;
2187 int palette_colors
= 0;
2192 if (depth
!= 1 && depth
!= 4 && depth
!= 8
2193 && depth
!= 16 && depth
!= 24 && depth
!= 32)
2195 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
2199 scanline_width_bits
= width
* depth
;
2200 remainder
= scanline_width_bits
% 32;
2203 scanline_width_bits
+= 32 - remainder
;
2205 /* Bitmaps with a depth less than 16 need a palette. */
2206 /* BITMAPINFO structure already contains the first RGBQUAD. */
2208 palette_colors
= 1 << depth
- 1;
2210 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
2213 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
2217 header
= &((*ximg
)->info
.bmiHeader
);
2218 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
2219 header
->biSize
= sizeof (*header
);
2220 header
->biWidth
= width
;
2221 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
2222 header
->biPlanes
= 1;
2223 header
->biBitCount
= depth
;
2224 header
->biCompression
= BI_RGB
;
2225 header
->biClrUsed
= palette_colors
;
2227 /* TODO: fill in palette. */
2230 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2231 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2232 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2233 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2234 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2235 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2236 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2237 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2240 hdc
= get_frame_dc (f
);
2242 /* Create a DIBSection and raster array for the bitmap,
2243 and store its handle in *pixmap. */
2244 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2245 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2246 /* casting avoids a GCC warning */
2247 (void **)&((*ximg
)->data
), NULL
, 0);
2249 /* Realize display palette and garbage all frames. */
2250 release_frame_dc (f
, hdc
);
2252 if (*pixmap
== NULL
)
2254 DWORD err
= GetLastError();
2255 Lisp_Object errcode
;
2256 /* All system errors are < 10000, so the following is safe. */
2257 XSETINT (errcode
, (int) err
);
2258 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2259 x_destroy_x_image (*ximg
);
2265 #endif /* HAVE_NTGUI */
2268 Display
*display
= FRAME_X_DISPLAY (f
);
2269 Window window
= FRAME_X_WINDOW (f
);
2271 xassert (interrupt_input_blocked
);
2273 /* Allocate a pixmap of the same size. */
2274 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
2275 if (*pixmap
== NO_PIXMAP
)
2278 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2282 LockPixels (GetGWorldPixMap (*pixmap
));
2290 /* Destroy XImage XIMG. Free XIMG->data. */
2293 x_destroy_x_image (ximg
)
2296 xassert (interrupt_input_blocked
);
2299 #ifdef HAVE_X_WINDOWS
2302 XDestroyImage (ximg
);
2303 #endif /* HAVE_X_WINDOWS */
2305 /* Data will be freed by DestroyObject. */
2308 #endif /* HAVE_NTGUI */
2310 XDestroyImage (ximg
);
2316 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2317 are width and height of both the image and pixmap. */
2320 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
2326 #ifdef HAVE_X_WINDOWS
2329 xassert (interrupt_input_blocked
);
2330 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2331 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2332 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2333 #endif /* HAVE_X_WINDOWS */
2336 #if 0 /* I don't think this is necessary looking at where it is used. */
2337 HDC hdc
= get_frame_dc (f
);
2338 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2339 release_frame_dc (f
, hdc
);
2341 #endif /* HAVE_NTGUI */
2344 xassert (ximg
== pixmap
);
2349 /***********************************************************************
2351 ***********************************************************************/
2353 static unsigned char *slurp_file
P_ ((char *, int *));
2356 /* Find image file FILE. Look in data-directory, then
2357 x-bitmap-file-path. Value is the encoded full name of the file
2358 found, or nil if not found. */
2361 x_find_image_file (file
)
2364 Lisp_Object file_found
, search_path
;
2365 struct gcpro gcpro1
, gcpro2
;
2369 search_path
= Fcons (Vdata_directory
, Vx_bitmap_file_path
);
2370 GCPRO2 (file_found
, search_path
);
2372 /* Try to find FILE in data-directory, then x-bitmap-file-path. */
2373 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2379 file_found
= ENCODE_FILE (file_found
);
2388 /* Read FILE into memory. Value is a pointer to a buffer allocated
2389 with xmalloc holding FILE's contents. Value is null if an error
2390 occurred. *SIZE is set to the size of the file. */
2392 static unsigned char *
2393 slurp_file (file
, size
)
2398 unsigned char *buf
= NULL
;
2401 if (stat (file
, &st
) == 0
2402 && (fp
= fopen (file
, "rb")) != NULL
2403 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2404 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2427 /***********************************************************************
2428 MAC Image Load Functions
2429 ***********************************************************************/
2431 static int image_load_quicktime
P_ ((struct frame
*, struct image
*img
,
2434 static int image_load_quartz2d
P_ ((struct frame
*, struct image
*img
, int));
2438 find_image_fsspec (specified_file
, file
, fss
)
2439 Lisp_Object specified_file
, *file
;
2445 *file
= x_find_image_file (specified_file
);
2446 if (!STRINGP (*file
))
2447 return fnfErr
; /* file or directory not found;
2448 incomplete pathname */
2449 /* Try to open the image file. */
2450 err
= AECoercePtr (TYPE_FILE_NAME
, SDATA (*file
),
2451 SBYTES (*file
), typeFSS
, &desc
);
2454 #if TARGET_API_MAC_CARBON
2455 err
= AEGetDescData (&desc
, fss
, sizeof (FSSpec
));
2457 *fss
= *(FSSpec
*)(*(desc
.dataHandle
));
2459 AEDisposeDesc (&desc
);
2465 image_load_qt_1 (f
, img
, type
, fss
, dh
)
2472 ComponentResult err
;
2473 GraphicsImportComponent gi
;
2476 ImageDescriptionHandle desc_handle
;
2477 short draw_all_pixels
;
2478 Lisp_Object specified_bg
;
2483 err
= OpenADefaultComponent (GraphicsImporterComponentType
, type
, &gi
);
2486 image_error ("Cannot get importer component for `%s'", img
->spec
, Qnil
);
2491 /* read from file system spec */
2492 err
= GraphicsImportSetDataFile (gi
, fss
);
2495 image_error ("Cannot set fsspec to graphics importer for '%s'",
2502 /* read from data handle */
2503 err
= GraphicsImportSetDataHandle (gi
, dh
);
2506 image_error ("Cannot set data handle to graphics importer for `%s'",
2511 err
= GraphicsImportGetImageDescription (gi
, &desc_handle
);
2512 if (err
!= noErr
|| desc_handle
== NULL
)
2514 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2517 width
= img
->width
= (*desc_handle
)->width
;
2518 height
= img
->height
= (*desc_handle
)->height
;
2519 DisposeHandle ((Handle
)desc_handle
);
2521 if (!check_image_size (f
, width
, height
))
2523 image_error ("Invalid image size", Qnil
, Qnil
);
2527 err
= GraphicsImportDoesDrawAllPixels (gi
, &draw_all_pixels
);
2529 /* Don't check the error code here. It may have an undocumented
2533 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2537 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2539 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2540 if (!STRINGP (specified_bg
) ||
2541 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2543 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2544 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2545 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2546 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2550 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2552 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2557 GetGWorld (&old_port
, &old_gdh
);
2558 SetGWorld (ximg
, NULL
);
2559 bg_color
.red
= color
.red
;
2560 bg_color
.green
= color
.green
;
2561 bg_color
.blue
= color
.blue
;
2562 RGBBackColor (&bg_color
);
2563 #if TARGET_API_MAC_CARBON
2564 GetPortBounds (ximg
, &rect
);
2567 EraseRect (&(ximg
->portRect
));
2569 SetGWorld (old_port
, old_gdh
);
2571 GraphicsImportSetGWorld (gi
, ximg
, NULL
);
2572 GraphicsImportDraw (gi
);
2573 CloseComponent (gi
);
2575 /* Maybe fill in the background field while we have ximg handy. */
2576 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2577 IMAGE_BACKGROUND (img
, f
, ximg
);
2579 /* Put the image into the pixmap. */
2580 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2581 x_destroy_x_image (ximg
);
2585 CloseComponent (gi
);
2590 /* Load an image using the QuickTime Graphics Importer.
2591 Note: The alpha channel does not work for PNG images. */
2593 image_load_quicktime (f
, img
, type
)
2598 Lisp_Object specified_file
;
2599 Lisp_Object specified_data
;
2602 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2603 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2605 if (NILP (specified_data
))
2607 /* Read from a file */
2611 err
= find_image_fsspec (specified_file
, &file
, &fss
);
2615 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2617 image_error ("Cannot open `%s'", file
, Qnil
);
2620 return image_load_qt_1 (f
, img
, type
, &fss
, NULL
);
2624 /* Memory source! */
2628 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
2631 image_error ("Cannot allocate data handle for `%s'",
2635 success_p
= image_load_qt_1 (f
, img
, type
, NULL
, dh
);
2643 /* Load a PNG/JPEG image using Quartz 2D decoding routines.
2644 CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2.
2645 So don't use this function directly but determine at runtime
2646 whether it exists. */
2647 typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType
)
2648 (CGDataProviderRef
, const float [], bool, CGColorRenderingIntent
);
2649 static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider
;
2653 init_image_func_pointer ()
2655 if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider"))
2657 MyCGImageCreateWithPNGDataProvider
2658 = (CGImageCreateWithPNGDataProviderProcType
)
2659 NSAddressOfSymbol (NSLookupAndBindSymbol
2660 ("_CGImageCreateWithPNGDataProvider"));
2663 MyCGImageCreateWithPNGDataProvider
= NULL
;
2668 image_load_quartz2d (f
, img
, png_p
)
2673 Lisp_Object file
, specified_file
;
2674 Lisp_Object specified_data
, specified_bg
;
2675 struct gcpro gcpro1
;
2676 CGDataProviderRef source
;
2680 XImagePtr ximg
= NULL
;
2681 CGContextRef context
;
2684 /* Open the file. */
2685 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2686 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2691 if (NILP (specified_data
))
2696 file
= x_find_image_file (specified_file
);
2697 if (!STRINGP (file
))
2699 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2703 path
= cfstring_create_with_utf8_cstring (SDATA (file
));
2704 url
= CFURLCreateWithFileSystemPath (NULL
, path
,
2705 kCFURLPOSIXPathStyle
, 0);
2707 source
= CGDataProviderCreateWithURL (url
);
2711 source
= CGDataProviderCreateWithData (NULL
, SDATA (specified_data
),
2712 SBYTES (specified_data
), NULL
);
2715 image
= (*MyCGImageCreateWithPNGDataProvider
) (source
, NULL
, FALSE
,
2716 kCGRenderingIntentDefault
);
2718 image
= CGImageCreateWithJPEGDataProvider (source
, NULL
, FALSE
,
2719 kCGRenderingIntentDefault
);
2721 CGDataProviderRelease (source
);
2725 image_error ("Error reading image `%s'", img
->spec
, Qnil
);
2728 width
= img
->width
= CGImageGetWidth (image
);
2729 height
= img
->height
= CGImageGetHeight (image
);
2731 if (!check_image_size (f
, width
, height
))
2733 CGImageRelease (image
);
2735 image_error ("Invalid image size", Qnil
, Qnil
);
2741 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2742 if (!STRINGP (specified_bg
) ||
2743 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2745 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2746 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2747 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2748 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2752 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2754 CGImageRelease (image
);
2758 rectangle
= CGRectMake (0, 0, width
, height
);
2759 QDBeginCGContext (ximg
, &context
);
2762 CGContextSetRGBFillColor (context
, color
.red
/ 65535.0,
2763 color
.green
/ 65535.0,
2764 color
.blue
/ 65535.0, 1.0);
2765 CGContextFillRect (context
, rectangle
);
2767 CGContextDrawImage (context
, rectangle
, image
);
2768 QDEndCGContext (ximg
, &context
);
2769 CGImageRelease (image
);
2771 /* Maybe fill in the background field while we have ximg handy. */
2772 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2773 IMAGE_BACKGROUND (img
, f
, ximg
);
2775 /* Put the image into the pixmap. */
2776 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2777 x_destroy_x_image (ximg
);
2786 /***********************************************************************
2788 ***********************************************************************/
2790 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2791 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2792 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2793 unsigned char *, unsigned char *));
2794 static int xbm_image_p
P_ ((Lisp_Object object
));
2795 static int xbm_read_bitmap_data
P_ ((struct frame
*f
,
2796 unsigned char *, unsigned char *,
2797 int *, int *, unsigned char **));
2798 static int xbm_file_p
P_ ((Lisp_Object
));
2801 /* Indices of image specification fields in xbm_format, below. */
2803 enum xbm_keyword_index
2821 /* Vector of image_keyword structures describing the format
2822 of valid XBM image specifications. */
2824 static struct image_keyword xbm_format
[XBM_LAST
] =
2826 {":type", IMAGE_SYMBOL_VALUE
, 1},
2827 {":file", IMAGE_STRING_VALUE
, 0},
2828 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2829 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2830 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2831 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2832 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2833 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2834 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2835 {":relief", IMAGE_INTEGER_VALUE
, 0},
2836 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2837 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2838 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2841 /* Structure describing the image type XBM. */
2843 static struct image_type xbm_type
=
2852 /* Tokens returned from xbm_scan. */
2861 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2862 A valid specification is a list starting with the symbol `image'
2863 The rest of the list is a property list which must contain an
2866 If the specification specifies a file to load, it must contain
2867 an entry `:file FILENAME' where FILENAME is a string.
2869 If the specification is for a bitmap loaded from memory it must
2870 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2871 WIDTH and HEIGHT are integers > 0. DATA may be:
2873 1. a string large enough to hold the bitmap data, i.e. it must
2874 have a size >= (WIDTH + 7) / 8 * HEIGHT
2876 2. a bool-vector of size >= WIDTH * HEIGHT
2878 3. a vector of strings or bool-vectors, one for each line of the
2881 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
2882 may not be specified in this case because they are defined in the
2885 Both the file and data forms may contain the additional entries
2886 `:background COLOR' and `:foreground COLOR'. If not present,
2887 foreground and background of the frame on which the image is
2888 displayed is used. */
2891 xbm_image_p (object
)
2894 struct image_keyword kw
[XBM_LAST
];
2896 bcopy (xbm_format
, kw
, sizeof kw
);
2897 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2900 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2902 if (kw
[XBM_FILE
].count
)
2904 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2907 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2909 /* In-memory XBM file. */
2910 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2918 /* Entries for `:width', `:height' and `:data' must be present. */
2919 if (!kw
[XBM_WIDTH
].count
2920 || !kw
[XBM_HEIGHT
].count
2921 || !kw
[XBM_DATA
].count
)
2924 data
= kw
[XBM_DATA
].value
;
2925 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2926 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2928 /* Check type of data, and width and height against contents of
2934 /* Number of elements of the vector must be >= height. */
2935 if (XVECTOR (data
)->size
< height
)
2938 /* Each string or bool-vector in data must be large enough
2939 for one line of the image. */
2940 for (i
= 0; i
< height
; ++i
)
2942 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2947 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2950 else if (BOOL_VECTOR_P (elt
))
2952 if (XBOOL_VECTOR (elt
)->size
< width
)
2959 else if (STRINGP (data
))
2962 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2965 else if (BOOL_VECTOR_P (data
))
2967 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2978 /* Scan a bitmap file. FP is the stream to read from. Value is
2979 either an enumerator from enum xbm_token, or a character for a
2980 single-character token, or 0 at end of file. If scanning an
2981 identifier, store the lexeme of the identifier in SVAL. If
2982 scanning a number, store its value in *IVAL. */
2985 xbm_scan (s
, end
, sval
, ival
)
2986 unsigned char **s
, *end
;
2994 /* Skip white space. */
2995 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3000 else if (isdigit (c
))
3002 int value
= 0, digit
;
3004 if (c
== '0' && *s
< end
)
3007 if (c
== 'x' || c
== 'X')
3014 else if (c
>= 'a' && c
<= 'f')
3015 digit
= c
- 'a' + 10;
3016 else if (c
>= 'A' && c
<= 'F')
3017 digit
= c
- 'A' + 10;
3020 value
= 16 * value
+ digit
;
3023 else if (isdigit (c
))
3027 && (c
= *(*s
)++, isdigit (c
)))
3028 value
= 8 * value
+ c
- '0';
3035 && (c
= *(*s
)++, isdigit (c
)))
3036 value
= 10 * value
+ c
- '0';
3044 else if (isalpha (c
) || c
== '_')
3048 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
3055 else if (c
== '/' && **s
== '*')
3057 /* C-style comment. */
3059 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
3073 /* Create a Windows bitmap from X bitmap data. */
3075 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
3077 static unsigned char swap_nibble
[16]
3078 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
3079 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
3080 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
3081 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
3083 unsigned char *bits
, *p
;
3086 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
3087 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
3088 bits
= (unsigned char *) alloca (height
* w2
);
3089 bzero (bits
, height
* w2
);
3090 for (i
= 0; i
< height
; i
++)
3093 for (j
= 0; j
< w1
; j
++)
3095 /* Bitswap XBM bytes to match how Windows does things. */
3096 unsigned char c
= *data
++;
3097 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
3098 | (swap_nibble
[(c
>>4) & 0xf]));
3101 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
3107 convert_mono_to_color_image (f
, img
, foreground
, background
)
3110 COLORREF foreground
, background
;
3112 HDC hdc
, old_img_dc
, new_img_dc
;
3113 HGDIOBJ old_prev
, new_prev
;
3116 hdc
= get_frame_dc (f
);
3117 old_img_dc
= CreateCompatibleDC (hdc
);
3118 new_img_dc
= CreateCompatibleDC (hdc
);
3119 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
3120 release_frame_dc (f
, hdc
);
3121 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
3122 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
3123 SetTextColor (new_img_dc
, background
);
3124 SetBkColor (new_img_dc
, foreground
);
3126 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
3129 SelectObject (old_img_dc
, old_prev
);
3130 SelectObject (new_img_dc
, new_prev
);
3131 DeleteDC (old_img_dc
);
3132 DeleteDC (new_img_dc
);
3133 DeleteObject (img
->pixmap
);
3134 if (new_pixmap
== 0)
3135 fprintf (stderr
, "Failed to convert image to color.\n");
3137 img
->pixmap
= new_pixmap
;
3140 #define XBM_BIT_SHUFFLE(b) (~(b))
3144 #define XBM_BIT_SHUFFLE(b) (b)
3146 #endif /* HAVE_NTGUI */
3150 Create_Pixmap_From_Bitmap_Data(f
, img
, data
, fg
, bg
, non_default_colors
)
3154 RGB_PIXEL_COLOR fg
, bg
;
3155 int non_default_colors
;
3159 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
3161 /* If colors were specified, transfer the bitmap to a color one. */
3162 if (non_default_colors
)
3163 convert_mono_to_color_image (f
, img
, fg
, bg
);
3166 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
3169 img
->width
, img
->height
,
3171 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
3172 #endif /* HAVE_NTGUI */
3177 /* Replacement for XReadBitmapFileData which isn't available under old
3178 X versions. CONTENTS is a pointer to a buffer to parse; END is the
3179 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
3180 the image. Return in *DATA the bitmap data allocated with xmalloc.
3181 Value is non-zero if successful. DATA null means just test if
3182 CONTENTS looks like an in-memory XBM file. */
3185 xbm_read_bitmap_data (f
, contents
, end
, width
, height
, data
)
3187 unsigned char *contents
, *end
;
3188 int *width
, *height
;
3189 unsigned char **data
;
3191 unsigned char *s
= contents
;
3192 char buffer
[BUFSIZ
];
3195 int bytes_per_line
, i
, nbytes
;
3201 LA1 = xbm_scan (&s, end, buffer, &value)
3203 #define expect(TOKEN) \
3204 if (LA1 != (TOKEN)) \
3209 #define expect_ident(IDENT) \
3210 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
3215 *width
= *height
= -1;
3218 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
3220 /* Parse defines for width, height and hot-spots. */
3224 expect_ident ("define");
3225 expect (XBM_TK_IDENT
);
3227 if (LA1
== XBM_TK_NUMBER
)
3229 char *p
= strrchr (buffer
, '_');
3230 p
= p
? p
+ 1 : buffer
;
3231 if (strcmp (p
, "width") == 0)
3233 else if (strcmp (p
, "height") == 0)
3236 expect (XBM_TK_NUMBER
);
3239 if (!check_image_size (f
, *width
, *height
))
3241 else if (data
== NULL
)
3244 /* Parse bits. Must start with `static'. */
3245 expect_ident ("static");
3246 if (LA1
== XBM_TK_IDENT
)
3248 if (strcmp (buffer
, "unsigned") == 0)
3251 expect_ident ("char");
3253 else if (strcmp (buffer
, "short") == 0)
3257 if (*width
% 16 && *width
% 16 < 9)
3260 else if (strcmp (buffer
, "char") == 0)
3268 expect (XBM_TK_IDENT
);
3274 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
3275 nbytes
= bytes_per_line
* *height
;
3276 p
= *data
= (unsigned char *) xmalloc (nbytes
);
3280 for (i
= 0; i
< nbytes
; i
+= 2)
3283 expect (XBM_TK_NUMBER
);
3285 *p
++ = XBM_BIT_SHUFFLE (val
);
3286 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
3287 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
3289 if (LA1
== ',' || LA1
== '}')
3297 for (i
= 0; i
< nbytes
; ++i
)
3300 expect (XBM_TK_NUMBER
);
3302 *p
++ = XBM_BIT_SHUFFLE (val
);
3304 if (LA1
== ',' || LA1
== '}')
3329 /* Load XBM image IMG which will be displayed on frame F from buffer
3330 CONTENTS. END is the end of the buffer. Value is non-zero if
3334 xbm_load_image (f
, img
, contents
, end
)
3337 unsigned char *contents
, *end
;
3340 unsigned char *data
;
3343 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
, &data
);
3346 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3347 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3348 int non_default_colors
= 0;
3351 xassert (img
->width
> 0 && img
->height
> 0);
3353 /* Get foreground and background colors, maybe allocate colors. */
3354 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
3357 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
3358 non_default_colors
= 1;
3360 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
3363 background
= x_alloc_image_color (f
, img
, value
, background
);
3364 img
->background
= background
;
3365 img
->background_valid
= 1;
3366 non_default_colors
= 1;
3369 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
3370 foreground
, background
,
3371 non_default_colors
);
3374 if (img
->pixmap
== NO_PIXMAP
)
3376 x_clear_image (f
, img
);
3377 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
3383 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3389 /* Value is non-zero if DATA looks like an in-memory XBM file. */
3396 return (STRINGP (data
)
3397 && xbm_read_bitmap_data (NULL
, SDATA (data
),
3404 /* Fill image IMG which is used on frame F with pixmap data. Value is
3405 non-zero if successful. */
3413 Lisp_Object file_name
;
3415 xassert (xbm_image_p (img
->spec
));
3417 /* If IMG->spec specifies a file name, create a non-file spec from it. */
3418 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
3419 if (STRINGP (file_name
))
3422 unsigned char *contents
;
3424 struct gcpro gcpro1
;
3426 file
= x_find_image_file (file_name
);
3428 if (!STRINGP (file
))
3430 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
3435 contents
= slurp_file (SDATA (file
), &size
);
3436 if (contents
== NULL
)
3438 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3443 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3448 struct image_keyword fmt
[XBM_LAST
];
3450 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3451 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3452 int non_default_colors
= 0;
3455 int in_memory_file_p
= 0;
3457 /* See if data looks like an in-memory XBM file. */
3458 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3459 in_memory_file_p
= xbm_file_p (data
);
3461 /* Parse the image specification. */
3462 bcopy (xbm_format
, fmt
, sizeof fmt
);
3463 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3466 /* Get specified width, and height. */
3467 if (!in_memory_file_p
)
3469 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3470 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3471 xassert (img
->width
> 0 && img
->height
> 0);
3474 /* Get foreground and background colors, maybe allocate colors. */
3475 if (fmt
[XBM_FOREGROUND
].count
3476 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3478 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3480 non_default_colors
= 1;
3483 if (fmt
[XBM_BACKGROUND
].count
3484 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3486 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3488 non_default_colors
= 1;
3491 if (in_memory_file_p
)
3492 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3501 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3503 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3504 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3506 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3508 bcopy (SDATA (line
), p
, nbytes
);
3510 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3513 else if (STRINGP (data
))
3514 bits
= SDATA (data
);
3516 bits
= XBOOL_VECTOR (data
)->data
;
3518 /* Create the pixmap. */
3520 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3521 foreground
, background
,
3522 non_default_colors
);
3527 image_error ("Unable to create pixmap for XBM image `%s'",
3529 x_clear_image (f
, img
);
3539 /***********************************************************************
3541 ***********************************************************************/
3543 #if defined (HAVE_XPM) || defined (MAC_OS)
3545 static int xpm_image_p
P_ ((Lisp_Object object
));
3546 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3547 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3549 #endif /* HAVE_XPM || MAC_OS */
3553 /* Indicate to xpm.h that we don't have Xlib. */
3555 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3556 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3557 #define XColor xpm_XColor
3558 #define XImage xpm_XImage
3559 #define Display xpm_Display
3560 #define PIXEL_ALREADY_TYPEDEFED
3561 #include "X11/xpm.h"
3566 #undef PIXEL_ALREADY_TYPEDEFED
3568 #include "X11/xpm.h"
3569 #endif /* HAVE_NTGUI */
3570 #endif /* HAVE_XPM */
3572 #if defined (HAVE_XPM) || defined (MAC_OS)
3573 /* The symbol `xpm' identifying XPM-format images. */
3577 /* Indices of image specification fields in xpm_format, below. */
3579 enum xpm_keyword_index
3595 /* Vector of image_keyword structures describing the format
3596 of valid XPM image specifications. */
3598 static struct image_keyword xpm_format
[XPM_LAST
] =
3600 {":type", IMAGE_SYMBOL_VALUE
, 1},
3601 {":file", IMAGE_STRING_VALUE
, 0},
3602 {":data", IMAGE_STRING_VALUE
, 0},
3603 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3604 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3605 {":relief", IMAGE_INTEGER_VALUE
, 0},
3606 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3607 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3608 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3609 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3610 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3613 /* Structure describing the image type XPM. */
3615 static struct image_type xpm_type
=
3624 #ifdef HAVE_X_WINDOWS
3626 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3627 functions for allocating image colors. Our own functions handle
3628 color allocation failures more gracefully than the ones on the XPM
3631 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3632 #define ALLOC_XPM_COLORS
3634 #endif /* HAVE_X_WINDOWS */
3636 #ifdef ALLOC_XPM_COLORS
3638 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3639 static void xpm_free_color_cache
P_ ((void));
3640 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3641 static int xpm_color_bucket
P_ ((char *));
3642 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3645 /* An entry in a hash table used to cache color definitions of named
3646 colors. This cache is necessary to speed up XPM image loading in
3647 case we do color allocations ourselves. Without it, we would need
3648 a call to XParseColor per pixel in the image. */
3650 struct xpm_cached_color
3652 /* Next in collision chain. */
3653 struct xpm_cached_color
*next
;
3655 /* Color definition (RGB and pixel color). */
3662 /* The hash table used for the color cache, and its bucket vector
3665 #define XPM_COLOR_CACHE_BUCKETS 1001
3666 struct xpm_cached_color
**xpm_color_cache
;
3668 /* Initialize the color cache. */
3671 xpm_init_color_cache (f
, attrs
)
3673 XpmAttributes
*attrs
;
3675 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3676 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3677 memset (xpm_color_cache
, 0, nbytes
);
3678 init_color_table ();
3680 if (attrs
->valuemask
& XpmColorSymbols
)
3685 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3686 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3687 attrs
->colorsymbols
[i
].value
, &color
))
3689 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3691 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3696 /* Free the color cache. */
3699 xpm_free_color_cache ()
3701 struct xpm_cached_color
*p
, *next
;
3704 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3705 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3711 xfree (xpm_color_cache
);
3712 xpm_color_cache
= NULL
;
3713 free_color_table ();
3716 /* Return the bucket index for color named COLOR_NAME in the color
3720 xpm_color_bucket (color_name
)
3726 for (s
= color_name
; *s
; ++s
)
3728 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3732 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3733 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3736 static struct xpm_cached_color
*
3737 xpm_cache_color (f
, color_name
, color
, bucket
)
3744 struct xpm_cached_color
*p
;
3747 bucket
= xpm_color_bucket (color_name
);
3749 nbytes
= sizeof *p
+ strlen (color_name
);
3750 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3751 strcpy (p
->name
, color_name
);
3753 p
->next
= xpm_color_cache
[bucket
];
3754 xpm_color_cache
[bucket
] = p
;
3758 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3759 return the cached definition in *COLOR. Otherwise, make a new
3760 entry in the cache and allocate the color. Value is zero if color
3761 allocation failed. */
3764 xpm_lookup_color (f
, color_name
, color
)
3769 struct xpm_cached_color
*p
;
3770 int h
= xpm_color_bucket (color_name
);
3772 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3773 if (strcmp (p
->name
, color_name
) == 0)
3778 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3781 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3783 p
= xpm_cache_color (f
, color_name
, color
, h
);
3785 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3786 with transparency, and it's useful. */
3787 else if (strcmp ("opaque", color_name
) == 0)
3789 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3790 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3791 p
= xpm_cache_color (f
, color_name
, color
, h
);
3798 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3799 CLOSURE is a pointer to the frame on which we allocate the
3800 color. Return in *COLOR the allocated color. Value is non-zero
3804 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3811 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3815 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3816 is a pointer to the frame on which we allocate the color. Value is
3817 non-zero if successful. */
3820 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3830 #endif /* ALLOC_XPM_COLORS */
3835 /* XPM library details. */
3837 DEF_IMGLIB_FN (XpmFreeAttributes
);
3838 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3839 DEF_IMGLIB_FN (XpmReadFileToImage
);
3840 DEF_IMGLIB_FN (XImageFree
);
3843 init_xpm_functions (Lisp_Object libraries
)
3847 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3850 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3851 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3852 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3853 LOAD_IMGLIB_FN (library
, XImageFree
);
3857 #endif /* HAVE_NTGUI */
3860 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3861 for XPM images. Such a list must consist of conses whose car and
3865 xpm_valid_color_symbols_p (color_symbols
)
3866 Lisp_Object color_symbols
;
3868 while (CONSP (color_symbols
))
3870 Lisp_Object sym
= XCAR (color_symbols
);
3872 || !STRINGP (XCAR (sym
))
3873 || !STRINGP (XCDR (sym
)))
3875 color_symbols
= XCDR (color_symbols
);
3878 return NILP (color_symbols
);
3882 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3885 xpm_image_p (object
)
3888 struct image_keyword fmt
[XPM_LAST
];
3889 bcopy (xpm_format
, fmt
, sizeof fmt
);
3890 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3891 /* Either `:file' or `:data' must be present. */
3892 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3893 /* Either no `:color-symbols' or it's a list of conses
3894 whose car and cdr are strings. */
3895 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3896 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3899 #endif /* HAVE_XPM || MAC_OS */
3901 #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)
3903 x_create_bitmap_from_xpm_data (f
, bits
)
3907 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3909 XpmAttributes attrs
;
3910 Pixmap bitmap
, mask
;
3912 bzero (&attrs
, sizeof attrs
);
3914 attrs
.visual
= FRAME_X_VISUAL (f
);
3915 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3916 attrs
.valuemask
|= XpmVisual
;
3917 attrs
.valuemask
|= XpmColormap
;
3919 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3920 bits
, &bitmap
, &mask
, &attrs
);
3921 if (rc
!= XpmSuccess
)
3923 XpmFreeAttributes (&attrs
);
3927 id
= x_allocate_bitmap_record (f
);
3928 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3929 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3930 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3931 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3932 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3933 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3934 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3935 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3937 XpmFreeAttributes (&attrs
);
3940 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3942 /* Load image IMG which will be displayed on frame F. Value is
3943 non-zero if successful. */
3953 XpmAttributes attrs
;
3954 Lisp_Object specified_file
, color_symbols
;
3957 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3958 #endif /* HAVE_NTGUI */
3960 /* Configure the XPM lib. Use the visual of frame F. Allocate
3961 close colors. Return colors allocated. */
3962 bzero (&attrs
, sizeof attrs
);
3965 attrs
.visual
= FRAME_X_VISUAL (f
);
3966 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3967 attrs
.valuemask
|= XpmVisual
;
3968 attrs
.valuemask
|= XpmColormap
;
3969 #endif /* HAVE_NTGUI */
3971 #ifdef ALLOC_XPM_COLORS
3972 /* Allocate colors with our own functions which handle
3973 failing color allocation more gracefully. */
3974 attrs
.color_closure
= f
;
3975 attrs
.alloc_color
= xpm_alloc_color
;
3976 attrs
.free_colors
= xpm_free_colors
;
3977 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3978 #else /* not ALLOC_XPM_COLORS */
3979 /* Let the XPM lib allocate colors. */
3980 attrs
.valuemask
|= XpmReturnAllocPixels
;
3981 #ifdef XpmAllocCloseColors
3982 attrs
.alloc_close_colors
= 1;
3983 attrs
.valuemask
|= XpmAllocCloseColors
;
3984 #else /* not XpmAllocCloseColors */
3985 attrs
.closeness
= 600;
3986 attrs
.valuemask
|= XpmCloseness
;
3987 #endif /* not XpmAllocCloseColors */
3988 #endif /* ALLOC_XPM_COLORS */
3990 /* If image specification contains symbolic color definitions, add
3991 these to `attrs'. */
3992 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3993 if (CONSP (color_symbols
))
3996 XpmColorSymbol
*xpm_syms
;
3999 attrs
.valuemask
|= XpmColorSymbols
;
4001 /* Count number of symbols. */
4002 attrs
.numsymbols
= 0;
4003 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
4006 /* Allocate an XpmColorSymbol array. */
4007 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
4008 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
4009 bzero (xpm_syms
, size
);
4010 attrs
.colorsymbols
= xpm_syms
;
4012 /* Fill the color symbol array. */
4013 for (tail
= color_symbols
, i
= 0;
4015 ++i
, tail
= XCDR (tail
))
4017 Lisp_Object name
= XCAR (XCAR (tail
));
4018 Lisp_Object color
= XCDR (XCAR (tail
));
4019 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
4020 strcpy (xpm_syms
[i
].name
, SDATA (name
));
4021 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
4022 strcpy (xpm_syms
[i
].value
, SDATA (color
));
4026 /* Create a pixmap for the image, either from a file, or from a
4027 string buffer containing data in the same format as an XPM file. */
4028 #ifdef ALLOC_XPM_COLORS
4029 xpm_init_color_cache (f
, &attrs
);
4032 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
4036 HDC frame_dc
= get_frame_dc (f
);
4037 hdc
= CreateCompatibleDC (frame_dc
);
4038 release_frame_dc (f
, frame_dc
);
4040 #endif /* HAVE_NTGUI */
4042 if (STRINGP (specified_file
))
4044 Lisp_Object file
= x_find_image_file (specified_file
);
4045 if (!STRINGP (file
))
4047 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
4052 /* XpmReadFileToPixmap is not available in the Windows port of
4053 libxpm. But XpmReadFileToImage almost does what we want. */
4054 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
4055 &xpm_image
, &xpm_mask
,
4058 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
4059 SDATA (file
), &img
->pixmap
, &img
->mask
,
4061 #endif /* HAVE_NTGUI */
4065 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
4067 /* XpmCreatePixmapFromBuffer is not available in the Windows port
4068 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
4069 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
4070 &xpm_image
, &xpm_mask
,
4073 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
4075 &img
->pixmap
, &img
->mask
,
4077 #endif /* HAVE_NTGUI */
4080 if (rc
== XpmSuccess
)
4082 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
4083 img
->colors
= colors_in_color_table (&img
->ncolors
);
4084 #else /* not ALLOC_XPM_COLORS */
4088 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
4089 plus some duplicate attributes. */
4090 if (xpm_image
&& xpm_image
->bitmap
)
4092 img
->pixmap
= xpm_image
->bitmap
;
4093 /* XImageFree in libXpm frees XImage struct without destroying
4094 the bitmap, which is what we want. */
4095 fn_XImageFree (xpm_image
);
4097 if (xpm_mask
&& xpm_mask
->bitmap
)
4099 /* The mask appears to be inverted compared with what we expect.
4100 TODO: invert our expectations. See other places where we
4101 have to invert bits because our idea of masks is backwards. */
4103 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
4105 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
4106 SelectObject (hdc
, old_obj
);
4108 img
->mask
= xpm_mask
->bitmap
;
4109 fn_XImageFree (xpm_mask
);
4114 #endif /* HAVE_NTGUI */
4116 /* Remember allocated colors. */
4117 img
->ncolors
= attrs
.nalloc_pixels
;
4118 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
4119 * sizeof *img
->colors
);
4120 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
4122 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
4123 #ifdef DEBUG_X_COLORS
4124 register_color (img
->colors
[i
]);
4127 #endif /* not ALLOC_XPM_COLORS */
4129 img
->width
= attrs
.width
;
4130 img
->height
= attrs
.height
;
4131 xassert (img
->width
> 0 && img
->height
> 0);
4133 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
4135 fn_XpmFreeAttributes (&attrs
);
4137 XpmFreeAttributes (&attrs
);
4138 #endif /* HAVE_NTGUI */
4144 #endif /* HAVE_NTGUI */
4149 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
4152 case XpmFileInvalid
:
4153 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4157 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4160 case XpmColorFailed
:
4161 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
4165 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
4170 #ifdef ALLOC_XPM_COLORS
4171 xpm_free_color_cache ();
4173 return rc
== XpmSuccess
;
4176 #endif /* HAVE_XPM */
4180 /* XPM support functions for Mac OS where libxpm is not available.
4181 Only XPM version 3 (without any extensions) is supported. */
4183 static int xpm_scan
P_ ((const unsigned char **, const unsigned char *,
4184 const unsigned char **, int *));
4185 static Lisp_Object xpm_make_color_table_v
4186 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4187 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4188 static void xpm_put_color_table_v
P_ ((Lisp_Object
, const unsigned char *,
4190 static Lisp_Object xpm_get_color_table_v
P_ ((Lisp_Object
,
4191 const unsigned char *, int));
4192 static Lisp_Object xpm_make_color_table_h
4193 P_ ((void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
4194 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int)));
4195 static void xpm_put_color_table_h
P_ ((Lisp_Object
, const unsigned char *,
4197 static Lisp_Object xpm_get_color_table_h
P_ ((Lisp_Object
,
4198 const unsigned char *, int));
4199 static int xpm_str_to_color_key
P_ ((const char *));
4200 static int xpm_load_image
P_ ((struct frame
*, struct image
*,
4201 const unsigned char *, const unsigned char *));
4203 /* Tokens returned from xpm_scan. */
4212 /* Scan an XPM data and return a character (< 256) or a token defined
4213 by enum xpm_token above. *S and END are the start (inclusive) and
4214 the end (exclusive) addresses of the data, respectively. Advance
4215 *S while scanning. If token is either XPM_TK_IDENT or
4216 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
4217 length of the corresponding token, respectively. */
4220 xpm_scan (s
, end
, beg
, len
)
4221 const unsigned char **s
, *end
, **beg
;
4228 /* Skip white-space. */
4229 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4232 /* gnus-pointer.xpm uses '-' in its identifier.
4233 sb-dir-plus.xpm uses '+' in its identifier. */
4234 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
4238 (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
4241 return XPM_TK_IDENT
;
4246 while (*s
< end
&& **s
!= '"')
4251 return XPM_TK_STRING
;
4255 if (*s
< end
&& **s
== '*')
4257 /* C-style comment. */
4261 while (*s
< end
&& *(*s
)++ != '*')
4264 while (*s
< end
&& **s
!= '/');
4278 /* Functions for color table lookup in XPM data. A Key is a string
4279 specifying the color of each pixel in XPM data. A value is either
4280 an integer that specifies a pixel color, Qt that specifies
4281 transparency, or Qnil for the unspecified color. If the length of
4282 the key string is one, a vector is used as a table. Otherwise, a
4283 hash table is used. */
4286 xpm_make_color_table_v (put_func
, get_func
)
4287 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4288 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4290 *put_func
= xpm_put_color_table_v
;
4291 *get_func
= xpm_get_color_table_v
;
4292 return Fmake_vector (make_number (256), Qnil
);
4296 xpm_put_color_table_v (color_table
, chars_start
, chars_len
, color
)
4297 Lisp_Object color_table
;
4298 const unsigned char *chars_start
;
4302 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
4306 xpm_get_color_table_v (color_table
, chars_start
, chars_len
)
4307 Lisp_Object color_table
;
4308 const unsigned char *chars_start
;
4311 return XVECTOR (color_table
)->contents
[*chars_start
];
4315 xpm_make_color_table_h (put_func
, get_func
)
4316 void (**put_func
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4317 Lisp_Object (**get_func
) (Lisp_Object
, const unsigned char *, int);
4319 *put_func
= xpm_put_color_table_h
;
4320 *get_func
= xpm_get_color_table_h
;
4321 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
4322 make_float (DEFAULT_REHASH_SIZE
),
4323 make_float (DEFAULT_REHASH_THRESHOLD
),
4328 xpm_put_color_table_h (color_table
, chars_start
, chars_len
, color
)
4329 Lisp_Object color_table
;
4330 const unsigned char *chars_start
;
4334 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4336 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
4338 hash_lookup (table
, chars
, &hash_code
);
4339 hash_put (table
, chars
, color
, hash_code
);
4343 xpm_get_color_table_h (color_table
, chars_start
, chars_len
)
4344 Lisp_Object color_table
;
4345 const unsigned char *chars_start
;
4348 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4349 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
4352 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
4355 enum xpm_color_key
{
4363 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
4366 xpm_str_to_color_key (s
)
4372 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
4374 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
4380 xpm_load_image (f
, img
, contents
, end
)
4383 const unsigned char *contents
, *end
;
4385 const unsigned char *s
= contents
, *beg
, *str
;
4386 unsigned char buffer
[BUFSIZ
];
4387 int width
, height
, x
, y
;
4388 int num_colors
, chars_per_pixel
;
4390 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
4391 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
4392 Lisp_Object frame
, color_symbols
, color_table
;
4393 int best_key
, have_mask
= 0;
4394 XImagePtr ximg
= NULL
, mask_img
= NULL
;
4397 LA1 = xpm_scan (&s, end, &beg, &len)
4399 #define expect(TOKEN) \
4400 if (LA1 != (TOKEN)) \
4405 #define expect_ident(IDENT) \
4406 if (LA1 == XPM_TK_IDENT \
4407 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
4412 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
4416 expect_ident ("static");
4417 expect_ident ("char");
4419 expect (XPM_TK_IDENT
);
4424 expect (XPM_TK_STRING
);
4427 memcpy (buffer
, beg
, len
);
4429 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
4430 &num_colors
, &chars_per_pixel
) != 4
4431 || width
<= 0 || height
<= 0
4432 || num_colors
<= 0 || chars_per_pixel
<= 0)
4435 if (!check_image_size (f
, width
, height
))
4437 image_error ("Invalid image size", Qnil
, Qnil
);
4443 XSETFRAME (frame
, f
);
4444 if (!NILP (Fxw_display_color_p (frame
)))
4445 best_key
= XPM_COLOR_KEY_C
;
4446 else if (!NILP (Fx_display_grayscale_p (frame
)))
4447 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
4448 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
4450 best_key
= XPM_COLOR_KEY_M
;
4452 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
4453 if (chars_per_pixel
== 1)
4454 color_table
= xpm_make_color_table_v (&put_color_table
,
4457 color_table
= xpm_make_color_table_h (&put_color_table
,
4460 while (num_colors
-- > 0)
4462 unsigned char *color
, *max_color
;
4463 int key
, next_key
, max_key
= 0;
4464 Lisp_Object symbol_color
= Qnil
, color_val
;
4467 expect (XPM_TK_STRING
);
4468 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
4470 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
4471 buffer
[len
- chars_per_pixel
] = '\0';
4473 str
= strtok (buffer
, " \t");
4476 key
= xpm_str_to_color_key (str
);
4481 color
= strtok (NULL
, " \t");
4485 while ((str
= strtok (NULL
, " \t")) != NULL
)
4487 next_key
= xpm_str_to_color_key (str
);
4490 color
[strlen (color
)] = ' ';
4493 if (key
== XPM_COLOR_KEY_S
)
4495 if (NILP (symbol_color
))
4496 symbol_color
= build_string (color
);
4498 else if (max_key
< key
&& key
<= best_key
)
4508 if (!NILP (color_symbols
) && !NILP (symbol_color
))
4510 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
4512 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
4514 if (xstricmp (SDATA (XCDR (specified_color
)), "None") == 0)
4516 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
4518 color_val
= make_number (cdef
.pixel
);
4521 if (NILP (color_val
) && max_key
> 0)
4523 if (xstricmp (max_color
, "None") == 0)
4525 else if (x_defined_color (f
, max_color
, &cdef
, 0))
4526 color_val
= make_number (cdef
.pixel
);
4528 if (!NILP (color_val
))
4529 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
4534 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4535 &ximg
, &img
->pixmap
)
4536 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
4537 &mask_img
, &img
->mask
))
4539 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4543 for (y
= 0; y
< height
; y
++)
4545 expect (XPM_TK_STRING
);
4547 if (len
< width
* chars_per_pixel
)
4549 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
4551 Lisp_Object color_val
=
4552 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4554 XPutPixel (ximg
, x
, y
,
4555 (INTEGERP (color_val
) ? XINT (color_val
)
4556 : FRAME_FOREGROUND_PIXEL (f
)));
4557 XPutPixel (mask_img
, x
, y
,
4558 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
4559 : (have_mask
= 1, PIX_MASK_RETAIN
)));
4566 img
->height
= height
;
4568 /* Maybe fill in the background field while we have ximg handy. */
4569 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4570 IMAGE_BACKGROUND (img
, f
, ximg
);
4572 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4573 x_destroy_x_image (ximg
);
4576 /* Fill in the background_transparent field while we have the
4578 image_background_transparent (img
, f
, mask_img
);
4580 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4581 x_destroy_x_image (mask_img
);
4585 x_destroy_x_image (mask_img
);
4586 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4587 img
->mask
= NO_PIXMAP
;
4593 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4595 x_destroy_x_image (ximg
);
4596 x_destroy_x_image (mask_img
);
4597 x_clear_image (f
, img
);
4611 Lisp_Object file_name
;
4613 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4614 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4615 if (STRINGP (file_name
))
4618 unsigned char *contents
;
4620 struct gcpro gcpro1
;
4622 file
= x_find_image_file (file_name
);
4624 if (!STRINGP (file
))
4626 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4631 contents
= slurp_file (SDATA (file
), &size
);
4632 if (contents
== NULL
)
4634 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4639 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4647 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4648 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4649 SDATA (data
) + SBYTES (data
));
4659 /***********************************************************************
4661 ***********************************************************************/
4663 #ifdef COLOR_TABLE_SUPPORT
4665 /* An entry in the color table mapping an RGB color to a pixel color. */
4670 unsigned long pixel
;
4672 /* Next in color table collision list. */
4673 struct ct_color
*next
;
4676 /* The bucket vector size to use. Must be prime. */
4680 /* Value is a hash of the RGB color given by R, G, and B. */
4682 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4684 /* The color hash table. */
4686 struct ct_color
**ct_table
;
4688 /* Number of entries in the color table. */
4690 int ct_colors_allocated
;
4692 /* Initialize the color table. */
4697 int size
= CT_SIZE
* sizeof (*ct_table
);
4698 ct_table
= (struct ct_color
**) xmalloc (size
);
4699 bzero (ct_table
, size
);
4700 ct_colors_allocated
= 0;
4704 /* Free memory associated with the color table. */
4710 struct ct_color
*p
, *next
;
4712 for (i
= 0; i
< CT_SIZE
; ++i
)
4713 for (p
= ct_table
[i
]; p
; p
= next
)
4724 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4725 entry for that color already is in the color table, return the
4726 pixel color of that entry. Otherwise, allocate a new color for R,
4727 G, B, and make an entry in the color table. */
4729 static unsigned long
4730 lookup_rgb_color (f
, r
, g
, b
)
4734 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4735 int i
= hash
% CT_SIZE
;
4737 Display_Info
*dpyinfo
;
4739 /* Handle TrueColor visuals specially, which improves performance by
4740 two orders of magnitude. Freeing colors on TrueColor visuals is
4741 a nop, and pixel colors specify RGB values directly. See also
4742 the Xlib spec, chapter 3.1. */
4743 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4744 if (dpyinfo
->red_bits
> 0)
4746 unsigned long pr
, pg
, pb
;
4748 /* Apply gamma-correction like normal color allocation does. */
4752 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4753 gamma_correct (f
, &color
);
4754 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4757 /* Scale down RGB values to the visual's bits per RGB, and shift
4758 them to the right position in the pixel color. Note that the
4759 original RGB values are 16-bit values, as usual in X. */
4760 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4761 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4762 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4764 /* Assemble the pixel color. */
4765 return pr
| pg
| pb
;
4768 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4769 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4775 #ifdef HAVE_X_WINDOWS
4784 cmap
= FRAME_X_COLORMAP (f
);
4785 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4788 ++ct_colors_allocated
;
4789 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4793 p
->pixel
= color
.pixel
;
4794 p
->next
= ct_table
[i
];
4798 return FRAME_FOREGROUND_PIXEL (f
);
4803 color
= PALETTERGB (r
, g
, b
);
4805 color
= RGB_TO_ULONG (r
, g
, b
);
4806 #endif /* HAVE_NTGUI */
4807 ++ct_colors_allocated
;
4808 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4813 p
->next
= ct_table
[i
];
4815 #endif /* HAVE_X_WINDOWS */
4823 /* Look up pixel color PIXEL which is used on frame F in the color
4824 table. If not already present, allocate it. Value is PIXEL. */
4826 static unsigned long
4827 lookup_pixel_color (f
, pixel
)
4829 unsigned long pixel
;
4831 int i
= pixel
% CT_SIZE
;
4834 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4835 if (p
->pixel
== pixel
)
4844 #ifdef HAVE_X_WINDOWS
4845 cmap
= FRAME_X_COLORMAP (f
);
4846 color
.pixel
= pixel
;
4847 x_query_color (f
, &color
);
4848 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4851 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4852 color
.pixel
= pixel
;
4853 XQueryColor (NULL
, cmap
, &color
);
4854 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4856 #endif /* HAVE_X_WINDOWS */
4860 ++ct_colors_allocated
;
4862 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4867 p
->next
= ct_table
[i
];
4871 return FRAME_FOREGROUND_PIXEL (f
);
4877 /* Value is a vector of all pixel colors contained in the color table,
4878 allocated via xmalloc. Set *N to the number of colors. */
4880 static unsigned long *
4881 colors_in_color_table (n
)
4886 unsigned long *colors
;
4888 if (ct_colors_allocated
== 0)
4895 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4897 *n
= ct_colors_allocated
;
4899 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4900 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4901 colors
[j
++] = p
->pixel
;
4907 #else /* COLOR_TABLE_SUPPORT */
4909 static unsigned long
4910 lookup_rgb_color (f
, r
, g
, b
)
4914 unsigned long pixel
;
4917 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4918 gamma_correct (f
, &pixel
);
4922 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4923 #endif /* HAVE_NTGUI */
4932 #endif /* COLOR_TABLE_SUPPORT */
4935 /***********************************************************************
4937 ***********************************************************************/
4939 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4940 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4941 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4944 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4945 #endif /* HAVE_NTGUI */
4947 /* Non-zero means draw a cross on images having `:conversion
4950 int cross_disabled_images
;
4952 /* Edge detection matrices for different edge-detection
4955 static int emboss_matrix
[9] = {
4957 2, -1, 0, /* y - 1 */
4959 0, 1, -2 /* y + 1 */
4962 static int laplace_matrix
[9] = {
4964 1, 0, 0, /* y - 1 */
4966 0, 0, -1 /* y + 1 */
4969 /* Value is the intensity of the color whose red/green/blue values
4972 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4975 /* On frame F, return an array of XColor structures describing image
4976 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4977 non-zero means also fill the red/green/blue members of the XColor
4978 structures. Value is a pointer to the array of XColors structures,
4979 allocated with xmalloc; it must be freed by the caller. */
4982 x_to_xcolors (f
, img
, rgb_p
)
4989 XImagePtr_or_DC ximg
;
4993 #endif /* HAVE_NTGUI */
4995 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4998 /* Get the X image IMG->pixmap. */
4999 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
5000 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
5002 /* Load the image into a memory device context. */
5003 hdc
= get_frame_dc (f
);
5004 ximg
= CreateCompatibleDC (hdc
);
5005 release_frame_dc (f
, hdc
);
5006 prev
= SelectObject (ximg
, img
->pixmap
);
5007 #endif /* HAVE_NTGUI */
5009 /* Fill the `pixel' members of the XColor array. I wished there
5010 were an easy and portable way to circumvent XGetPixel. */
5012 for (y
= 0; y
< img
->height
; ++y
)
5016 #ifdef HAVE_X_WINDOWS
5017 for (x
= 0; x
< img
->width
; ++x
, ++p
)
5018 p
->pixel
= XGetPixel (ximg
, x
, y
);
5020 x_query_colors (f
, row
, img
->width
);
5024 for (x
= 0; x
< img
->width
; ++x
, ++p
)
5026 /* W32_TODO: palette support needed here? */
5027 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
5031 p
->red
= RED16_FROM_ULONG (p
->pixel
);
5032 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
5033 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
5036 p
->red
= 256 * GetRValue (p
->pixel
);
5037 p
->green
= 256 * GetGValue (p
->pixel
);
5038 p
->blue
= 256 * GetBValue (p
->pixel
);
5039 #endif /* HAVE_NTGUI */
5042 #endif /* HAVE_X_WINDOWS */
5045 Destroy_Image (ximg
, prev
);
5052 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
5053 created with CreateDIBSection, with the pointer to the bit values
5054 stored in ximg->data. */
5057 XPutPixel (ximg
, x
, y
, color
)
5062 int width
= ximg
->info
.bmiHeader
.biWidth
;
5063 int height
= ximg
->info
.bmiHeader
.biHeight
;
5064 unsigned char * pixel
;
5066 /* True color images. */
5067 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
5069 int rowbytes
= width
* 3;
5070 /* Ensure scanlines are aligned on 4 byte boundaries. */
5072 rowbytes
+= 4 - (rowbytes
% 4);
5074 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
5075 /* Windows bitmaps are in BGR order. */
5076 *pixel
= GetBValue (color
);
5077 *(pixel
+ 1) = GetGValue (color
);
5078 *(pixel
+ 2) = GetRValue (color
);
5080 /* Monochrome images. */
5081 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
5083 int rowbytes
= width
/ 8;
5084 /* Ensure scanlines are aligned on 4 byte boundaries. */
5086 rowbytes
+= 4 - (rowbytes
% 4);
5087 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
5088 /* Filter out palette info. */
5089 if (color
& 0x00ffffff)
5090 *pixel
= *pixel
| (1 << x
% 8);
5092 *pixel
= *pixel
& ~(1 << x
% 8);
5095 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
5098 #endif /* HAVE_NTGUI */
5100 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
5101 RGB members are set. F is the frame on which this all happens.
5102 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
5105 x_from_xcolors (f
, img
, colors
)
5115 init_color_table ();
5117 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
5120 for (y
= 0; y
< img
->height
; ++y
)
5121 for (x
= 0; x
< img
->width
; ++x
, ++p
)
5123 unsigned long pixel
;
5124 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
5125 XPutPixel (oimg
, x
, y
, pixel
);
5129 x_clear_image_1 (f
, img
, 1, 0, 1);
5131 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
5132 x_destroy_x_image (oimg
);
5133 img
->pixmap
= pixmap
;
5134 #ifdef COLOR_TABLE_SUPPORT
5135 img
->colors
= colors_in_color_table (&img
->ncolors
);
5136 free_color_table ();
5137 #endif /* COLOR_TABLE_SUPPORT */
5141 /* On frame F, perform edge-detection on image IMG.
5143 MATRIX is a nine-element array specifying the transformation
5144 matrix. See emboss_matrix for an example.
5146 COLOR_ADJUST is a color adjustment added to each pixel of the
5150 x_detect_edges (f
, img
, matrix
, color_adjust
)
5153 int matrix
[9], color_adjust
;
5155 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5159 for (i
= sum
= 0; i
< 9; ++i
)
5160 sum
+= abs (matrix
[i
]);
5162 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
5164 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
5166 for (y
= 0; y
< img
->height
; ++y
)
5168 p
= COLOR (new, 0, y
);
5169 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5170 p
= COLOR (new, img
->width
- 1, y
);
5171 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5174 for (x
= 1; x
< img
->width
- 1; ++x
)
5176 p
= COLOR (new, x
, 0);
5177 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5178 p
= COLOR (new, x
, img
->height
- 1);
5179 p
->red
= p
->green
= p
->blue
= 0xffff/2;
5182 for (y
= 1; y
< img
->height
- 1; ++y
)
5184 p
= COLOR (new, 1, y
);
5186 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
5188 int r
, g
, b
, y1
, x1
;
5191 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
5192 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
5195 XColor
*t
= COLOR (colors
, x1
, y1
);
5196 r
+= matrix
[i
] * t
->red
;
5197 g
+= matrix
[i
] * t
->green
;
5198 b
+= matrix
[i
] * t
->blue
;
5201 r
= (r
/ sum
+ color_adjust
) & 0xffff;
5202 g
= (g
/ sum
+ color_adjust
) & 0xffff;
5203 b
= (b
/ sum
+ color_adjust
) & 0xffff;
5204 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
5209 x_from_xcolors (f
, img
, new);
5215 /* Perform the pre-defined `emboss' edge-detection on image IMG
5223 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
5227 /* Transform image IMG which is used on frame F with a Laplace
5228 edge-detection algorithm. The result is an image that can be used
5229 to draw disabled buttons, for example. */
5236 x_detect_edges (f
, img
, laplace_matrix
, 45000);
5240 /* Perform edge-detection on image IMG on frame F, with specified
5241 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
5243 MATRIX must be either
5245 - a list of at least 9 numbers in row-major form
5246 - a vector of at least 9 numbers
5248 COLOR_ADJUST nil means use a default; otherwise it must be a
5252 x_edge_detection (f
, img
, matrix
, color_adjust
)
5255 Lisp_Object matrix
, color_adjust
;
5263 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
5264 ++i
, matrix
= XCDR (matrix
))
5265 trans
[i
] = XFLOATINT (XCAR (matrix
));
5267 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
5269 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
5270 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
5273 if (NILP (color_adjust
))
5274 color_adjust
= make_number (0xffff / 2);
5276 if (i
== 9 && NUMBERP (color_adjust
))
5277 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
5281 /* Transform image IMG on frame F so that it looks disabled. */
5284 x_disable_image (f
, img
)
5288 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
5290 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
5292 int n_planes
= dpyinfo
->n_planes
;
5293 #endif /* HAVE_NTGUI */
5297 /* Color (or grayscale). Convert to gray, and equalize. Just
5298 drawing such images with a stipple can look very odd, so
5299 we're using this method instead. */
5300 XColor
*colors
= x_to_xcolors (f
, img
, 1);
5302 const int h
= 15000;
5303 const int l
= 30000;
5305 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
5309 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
5310 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
5311 p
->red
= p
->green
= p
->blue
= i2
;
5314 x_from_xcolors (f
, img
, colors
);
5317 /* Draw a cross over the disabled image, if we must or if we
5319 if (n_planes
< 2 || cross_disabled_images
)
5322 Display
*dpy
= FRAME_X_DISPLAY (f
);
5326 #define MaskForeground(f) PIX_MASK_DRAW
5328 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
5331 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
5332 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
5333 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
5334 img
->width
- 1, img
->height
- 1);
5335 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
5341 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
5342 XSetForeground (dpy
, gc
, MaskForeground (f
));
5343 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
5344 img
->width
- 1, img
->height
- 1);
5345 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
5353 hdc
= get_frame_dc (f
);
5354 bmpdc
= CreateCompatibleDC (hdc
);
5355 release_frame_dc (f
, hdc
);
5357 prev
= SelectObject (bmpdc
, img
->pixmap
);
5359 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
5360 MoveToEx (bmpdc
, 0, 0, NULL
);
5361 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5362 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5363 LineTo (bmpdc
, img
->width
- 1, 0);
5367 SelectObject (bmpdc
, img
->mask
);
5368 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
5369 MoveToEx (bmpdc
, 0, 0, NULL
);
5370 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5371 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5372 LineTo (bmpdc
, img
->width
- 1, 0);
5374 SelectObject (bmpdc
, prev
);
5376 #endif /* HAVE_NTGUI */
5381 /* Build a mask for image IMG which is used on frame F. FILE is the
5382 name of an image file, for error messages. HOW determines how to
5383 determine the background color of IMG. If it is a list '(R G B)',
5384 with R, G, and B being integers >= 0, take that as the color of the
5385 background. Otherwise, determine the background color of IMG
5386 heuristically. Value is non-zero if successful. */
5389 x_build_heuristic_mask (f
, img
, how
)
5394 XImagePtr_or_DC ximg
;
5402 #endif /* HAVE_NTGUI */
5403 int x
, y
, rc
, use_img_background
;
5404 unsigned long bg
= 0;
5408 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
5409 img
->mask
= NO_PIXMAP
;
5410 img
->background_transparent_valid
= 0;
5414 /* Create an image and pixmap serving as mask. */
5415 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
5416 &mask_img
, &img
->mask
);
5420 /* Get the X image of IMG->pixmap. */
5421 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
5422 img
->width
, img
->height
,
5425 /* Create the bit array serving as mask. */
5426 row_width
= (img
->width
+ 7) / 8;
5427 mask_img
= xmalloc (row_width
* img
->height
);
5428 bzero (mask_img
, row_width
* img
->height
);
5430 /* Create a memory device context for IMG->pixmap. */
5431 frame_dc
= get_frame_dc (f
);
5432 ximg
= CreateCompatibleDC (frame_dc
);
5433 release_frame_dc (f
, frame_dc
);
5434 prev
= SelectObject (ximg
, img
->pixmap
);
5435 #endif /* HAVE_NTGUI */
5437 /* Determine the background color of ximg. If HOW is `(R G B)'
5438 take that as color. Otherwise, use the image's background color. */
5439 use_img_background
= 1;
5445 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
5447 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
5451 if (i
== 3 && NILP (how
))
5453 char color_name
[30];
5454 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
5457 0x00ffffff & /* Filter out palette info. */
5458 #endif /* HAVE_NTGUI */
5459 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
5460 use_img_background
= 0;
5464 if (use_img_background
)
5465 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
5467 /* Set all bits in mask_img to 1 whose color in ximg is different
5468 from the background color bg. */
5470 for (y
= 0; y
< img
->height
; ++y
)
5471 for (x
= 0; x
< img
->width
; ++x
)
5472 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
5473 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
5475 /* Fill in the background_transparent field while we have the mask handy. */
5476 image_background_transparent (img
, f
, mask_img
);
5478 /* Put mask_img into img->mask. */
5479 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5480 x_destroy_x_image (mask_img
);
5483 for (y
= 0; y
< img
->height
; ++y
)
5484 for (x
= 0; x
< img
->width
; ++x
)
5486 COLORREF p
= GetPixel (ximg
, x
, y
);
5488 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
5491 /* Create the mask image. */
5492 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
5494 /* Fill in the background_transparent field while we have the mask handy. */
5495 SelectObject (ximg
, img
->mask
);
5496 image_background_transparent (img
, f
, ximg
);
5498 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
5500 #endif /* HAVE_NTGUI */
5502 Destroy_Image (ximg
, prev
);
5508 /***********************************************************************
5509 PBM (mono, gray, color)
5510 ***********************************************************************/
5512 static int pbm_image_p
P_ ((Lisp_Object object
));
5513 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
5514 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
5516 /* The symbol `pbm' identifying images of this type. */
5520 /* Indices of image specification fields in gs_format, below. */
5522 enum pbm_keyword_index
5538 /* Vector of image_keyword structures describing the format
5539 of valid user-defined image specifications. */
5541 static struct image_keyword pbm_format
[PBM_LAST
] =
5543 {":type", IMAGE_SYMBOL_VALUE
, 1},
5544 {":file", IMAGE_STRING_VALUE
, 0},
5545 {":data", IMAGE_STRING_VALUE
, 0},
5546 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5547 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5548 {":relief", IMAGE_INTEGER_VALUE
, 0},
5549 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5550 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5551 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5552 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
5553 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5556 /* Structure describing the image type `pbm'. */
5558 static struct image_type pbm_type
=
5568 /* Return non-zero if OBJECT is a valid PBM image specification. */
5571 pbm_image_p (object
)
5574 struct image_keyword fmt
[PBM_LAST
];
5576 bcopy (pbm_format
, fmt
, sizeof fmt
);
5578 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5581 /* Must specify either :data or :file. */
5582 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5586 /* Scan a decimal number from *S and return it. Advance *S while
5587 reading the number. END is the end of the string. Value is -1 at
5591 pbm_scan_number (s
, end
)
5592 unsigned char **s
, *end
;
5594 int c
= 0, val
= -1;
5598 /* Skip white-space. */
5599 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5604 /* Skip comment to end of line. */
5605 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5608 else if (isdigit (c
))
5610 /* Read decimal number. */
5612 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5613 val
= 10 * val
+ c
- '0';
5625 #if 0 /* Unused. ++kfs */
5627 /* Read FILE into memory. Value is a pointer to a buffer allocated
5628 with xmalloc holding FILE's contents. Value is null if an error
5629 occurred. *SIZE is set to the size of the file. */
5632 pbm_read_file (file
, size
)
5640 if (stat (SDATA (file
), &st
) == 0
5641 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5642 && (buf
= (char *) xmalloc (st
.st_size
),
5643 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5662 #endif /* HAVE_NTGUI */
5664 /* Load PBM image IMG for use on frame F. */
5672 int width
, height
, max_color_idx
= 0;
5674 Lisp_Object file
, specified_file
;
5675 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5676 struct gcpro gcpro1
;
5677 unsigned char *contents
= NULL
;
5678 unsigned char *end
, *p
;
5681 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5685 if (STRINGP (specified_file
))
5687 file
= x_find_image_file (specified_file
);
5688 if (!STRINGP (file
))
5690 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5695 contents
= slurp_file (SDATA (file
), &size
);
5696 if (contents
== NULL
)
5698 image_error ("Error reading `%s'", file
, Qnil
);
5704 end
= contents
+ size
;
5709 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5711 end
= p
+ SBYTES (data
);
5714 /* Check magic number. */
5715 if (end
- p
< 2 || *p
++ != 'P')
5717 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5727 raw_p
= 0, type
= PBM_MONO
;
5731 raw_p
= 0, type
= PBM_GRAY
;
5735 raw_p
= 0, type
= PBM_COLOR
;
5739 raw_p
= 1, type
= PBM_MONO
;
5743 raw_p
= 1, type
= PBM_GRAY
;
5747 raw_p
= 1, type
= PBM_COLOR
;
5751 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5755 /* Read width, height, maximum color-component. Characters
5756 starting with `#' up to the end of a line are ignored. */
5757 width
= pbm_scan_number (&p
, end
);
5758 height
= pbm_scan_number (&p
, end
);
5760 if (type
!= PBM_MONO
)
5762 max_color_idx
= pbm_scan_number (&p
, end
);
5763 if (raw_p
&& max_color_idx
> 255)
5764 max_color_idx
= 255;
5767 if (!check_image_size (f
, width
, height
)
5768 || (type
!= PBM_MONO
&& max_color_idx
< 0))
5771 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5772 &ximg
, &img
->pixmap
))
5775 /* Initialize the color hash table. */
5776 init_color_table ();
5778 if (type
== PBM_MONO
)
5781 struct image_keyword fmt
[PBM_LAST
];
5782 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5783 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5785 /* Parse the image specification. */
5786 bcopy (pbm_format
, fmt
, sizeof fmt
);
5787 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5789 /* Get foreground and background colors, maybe allocate colors. */
5790 if (fmt
[PBM_FOREGROUND
].count
5791 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5792 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5793 if (fmt
[PBM_BACKGROUND
].count
5794 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5796 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5797 img
->background
= bg
;
5798 img
->background_valid
= 1;
5801 for (y
= 0; y
< height
; ++y
)
5802 for (x
= 0; x
< width
; ++x
)
5810 x_destroy_x_image (ximg
);
5811 x_clear_image (f
, img
);
5812 image_error ("Invalid image size in image `%s'",
5822 g
= pbm_scan_number (&p
, end
);
5824 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5830 && ((type
== PBM_GRAY
)
5831 ? (p
+ height
* width
> end
)
5832 : (p
+ 3 * height
* width
> end
)))
5834 x_destroy_x_image (ximg
);
5835 x_clear_image (f
, img
);
5836 image_error ("Invalid image size in image `%s'",
5841 for (y
= 0; y
< height
; ++y
)
5842 for (x
= 0; x
< width
; ++x
)
5846 if (type
== PBM_GRAY
)
5847 r
= g
= b
= raw_p
? *p
++ : pbm_scan_number (&p
, end
);
5856 r
= pbm_scan_number (&p
, end
);
5857 g
= pbm_scan_number (&p
, end
);
5858 b
= pbm_scan_number (&p
, end
);
5861 if (r
< 0 || g
< 0 || b
< 0)
5863 x_destroy_x_image (ximg
);
5864 image_error ("Invalid pixel value in image `%s'",
5869 /* RGB values are now in the range 0..max_color_idx.
5870 Scale this to the range 0..0xffff supported by X. */
5871 r
= (double) r
* 65535 / max_color_idx
;
5872 g
= (double) g
* 65535 / max_color_idx
;
5873 b
= (double) b
* 65535 / max_color_idx
;
5874 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5878 #ifdef COLOR_TABLE_SUPPORT
5879 /* Store in IMG->colors the colors allocated for the image, and
5880 free the color table. */
5881 img
->colors
= colors_in_color_table (&img
->ncolors
);
5882 free_color_table ();
5883 #endif /* COLOR_TABLE_SUPPORT */
5886 img
->height
= height
;
5888 /* Maybe fill in the background field while we have ximg handy. */
5890 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5891 /* Casting avoids a GCC warning. */
5892 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5894 /* Put the image into a pixmap. */
5895 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5896 x_destroy_x_image (ximg
);
5898 /* X and W32 versions did it here, MAC version above. ++kfs
5900 img->height = height; */
5908 /***********************************************************************
5910 ***********************************************************************/
5912 #if defined (HAVE_PNG) || defined (MAC_OS)
5914 /* Function prototypes. */
5916 static int png_image_p
P_ ((Lisp_Object object
));
5917 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
5919 /* The symbol `png' identifying images of this type. */
5923 /* Indices of image specification fields in png_format, below. */
5925 enum png_keyword_index
5940 /* Vector of image_keyword structures describing the format
5941 of valid user-defined image specifications. */
5943 static struct image_keyword png_format
[PNG_LAST
] =
5945 {":type", IMAGE_SYMBOL_VALUE
, 1},
5946 {":data", IMAGE_STRING_VALUE
, 0},
5947 {":file", IMAGE_STRING_VALUE
, 0},
5948 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5949 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5950 {":relief", IMAGE_INTEGER_VALUE
, 0},
5951 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5952 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5953 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5954 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5957 /* Structure describing the image type `png'. */
5959 static struct image_type png_type
=
5968 /* Return non-zero if OBJECT is a valid PNG image specification. */
5971 png_image_p (object
)
5974 struct image_keyword fmt
[PNG_LAST
];
5975 bcopy (png_format
, fmt
, sizeof fmt
);
5977 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5980 /* Must specify either the :data or :file keyword. */
5981 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5984 #endif /* HAVE_PNG || MAC_OS */
5989 #if defined HAVE_LIBPNG_PNG_H
5990 # include <libpng/png.h>
5996 /* PNG library details. */
5998 DEF_IMGLIB_FN (png_get_io_ptr
);
5999 DEF_IMGLIB_FN (png_check_sig
);
6000 DEF_IMGLIB_FN (png_create_read_struct
);
6001 DEF_IMGLIB_FN (png_create_info_struct
);
6002 DEF_IMGLIB_FN (png_destroy_read_struct
);
6003 DEF_IMGLIB_FN (png_set_read_fn
);
6004 DEF_IMGLIB_FN (png_set_sig_bytes
);
6005 DEF_IMGLIB_FN (png_read_info
);
6006 DEF_IMGLIB_FN (png_get_IHDR
);
6007 DEF_IMGLIB_FN (png_get_valid
);
6008 DEF_IMGLIB_FN (png_set_strip_16
);
6009 DEF_IMGLIB_FN (png_set_expand
);
6010 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
6011 DEF_IMGLIB_FN (png_set_background
);
6012 DEF_IMGLIB_FN (png_get_bKGD
);
6013 DEF_IMGLIB_FN (png_read_update_info
);
6014 DEF_IMGLIB_FN (png_get_channels
);
6015 DEF_IMGLIB_FN (png_get_rowbytes
);
6016 DEF_IMGLIB_FN (png_read_image
);
6017 DEF_IMGLIB_FN (png_read_end
);
6018 DEF_IMGLIB_FN (png_error
);
6021 init_png_functions (Lisp_Object libraries
)
6025 /* Try loading libpng under probable names. */
6026 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
6029 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
6030 LOAD_IMGLIB_FN (library
, png_check_sig
);
6031 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
6032 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
6033 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
6034 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
6035 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
6036 LOAD_IMGLIB_FN (library
, png_read_info
);
6037 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
6038 LOAD_IMGLIB_FN (library
, png_get_valid
);
6039 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
6040 LOAD_IMGLIB_FN (library
, png_set_expand
);
6041 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
6042 LOAD_IMGLIB_FN (library
, png_set_background
);
6043 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
6044 LOAD_IMGLIB_FN (library
, png_read_update_info
);
6045 LOAD_IMGLIB_FN (library
, png_get_channels
);
6046 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
6047 LOAD_IMGLIB_FN (library
, png_read_image
);
6048 LOAD_IMGLIB_FN (library
, png_read_end
);
6049 LOAD_IMGLIB_FN (library
, png_error
);
6054 #define fn_png_get_io_ptr png_get_io_ptr
6055 #define fn_png_check_sig png_check_sig
6056 #define fn_png_create_read_struct png_create_read_struct
6057 #define fn_png_create_info_struct png_create_info_struct
6058 #define fn_png_destroy_read_struct png_destroy_read_struct
6059 #define fn_png_set_read_fn png_set_read_fn
6060 #define fn_png_set_sig_bytes png_set_sig_bytes
6061 #define fn_png_read_info png_read_info
6062 #define fn_png_get_IHDR png_get_IHDR
6063 #define fn_png_get_valid png_get_valid
6064 #define fn_png_set_strip_16 png_set_strip_16
6065 #define fn_png_set_expand png_set_expand
6066 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
6067 #define fn_png_set_background png_set_background
6068 #define fn_png_get_bKGD png_get_bKGD
6069 #define fn_png_read_update_info png_read_update_info
6070 #define fn_png_get_channels png_get_channels
6071 #define fn_png_get_rowbytes png_get_rowbytes
6072 #define fn_png_read_image png_read_image
6073 #define fn_png_read_end png_read_end
6074 #define fn_png_error png_error
6076 #endif /* HAVE_NTGUI */
6078 /* Error and warning handlers installed when the PNG library
6082 my_png_error (png_ptr
, msg
)
6083 png_struct
*png_ptr
;
6086 xassert (png_ptr
!= NULL
);
6087 image_error ("PNG error: %s", build_string (msg
), Qnil
);
6088 longjmp (png_ptr
->jmpbuf
, 1);
6093 my_png_warning (png_ptr
, msg
)
6094 png_struct
*png_ptr
;
6097 xassert (png_ptr
!= NULL
);
6098 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
6101 /* Memory source for PNG decoding. */
6103 struct png_memory_storage
6105 unsigned char *bytes
; /* The data */
6106 size_t len
; /* How big is it? */
6107 int index
; /* Where are we? */
6111 /* Function set as reader function when reading PNG image from memory.
6112 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6113 bytes from the input to DATA. */
6116 png_read_from_memory (png_ptr
, data
, length
)
6117 png_structp png_ptr
;
6121 struct png_memory_storage
*tbr
6122 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
6124 if (length
> tbr
->len
- tbr
->index
)
6125 fn_png_error (png_ptr
, "Read error");
6127 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
6128 tbr
->index
= tbr
->index
+ length
;
6132 /* Function set as reader function when reading PNG image from a file.
6133 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
6134 bytes from the input to DATA. */
6137 png_read_from_file (png_ptr
, data
, length
)
6138 png_structp png_ptr
;
6142 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
6144 if (fread (data
, 1, length
, fp
) < length
)
6145 fn_png_error (png_ptr
, "Read error");
6149 /* Load PNG image IMG for use on frame F. Value is non-zero if
6157 Lisp_Object file
, specified_file
;
6158 Lisp_Object specified_data
;
6160 XImagePtr ximg
, mask_img
= NULL
;
6161 struct gcpro gcpro1
;
6162 png_struct
*png_ptr
= NULL
;
6163 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
6164 FILE *volatile fp
= NULL
;
6166 png_byte
* volatile pixels
= NULL
;
6167 png_byte
** volatile rows
= NULL
;
6168 png_uint_32 width
, height
;
6169 int bit_depth
, color_type
, interlace_type
;
6171 png_uint_32 row_bytes
;
6173 double screen_gamma
;
6174 struct png_memory_storage tbr
; /* Data to be read */
6176 /* Find out what file to load. */
6177 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6178 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6182 if (NILP (specified_data
))
6184 file
= x_find_image_file (specified_file
);
6185 if (!STRINGP (file
))
6187 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6192 /* Open the image file. */
6193 fp
= fopen (SDATA (file
), "rb");
6196 image_error ("Cannot open image file `%s'", file
, Qnil
);
6201 /* Check PNG signature. */
6202 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
6203 || !fn_png_check_sig (sig
, sizeof sig
))
6205 image_error ("Not a PNG file: `%s'", file
, Qnil
);
6213 /* Read from memory. */
6214 tbr
.bytes
= SDATA (specified_data
);
6215 tbr
.len
= SBYTES (specified_data
);
6218 /* Check PNG signature. */
6219 if (tbr
.len
< sizeof sig
6220 || !fn_png_check_sig (tbr
.bytes
, sizeof sig
))
6222 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
6227 /* Need to skip past the signature. */
6228 tbr
.bytes
+= sizeof (sig
);
6231 /* Initialize read and info structs for PNG lib. Casting return
6232 value avoids a GCC warning on W32. */
6233 png_ptr
= (png_structp
)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
6238 if (fp
) fclose (fp
);
6243 /* Casting return value avoids a GCC warning on W32. */
6244 info_ptr
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6247 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
6248 if (fp
) fclose (fp
);
6253 /* Casting return value avoids a GCC warning on W32. */
6254 end_info
= (png_infop
)fn_png_create_info_struct (png_ptr
);
6257 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
6258 if (fp
) fclose (fp
);
6263 /* Set error jump-back. We come back here when the PNG library
6264 detects an error. */
6265 if (setjmp (png_ptr
->jmpbuf
))
6269 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6272 if (fp
) fclose (fp
);
6277 /* Read image info. */
6278 if (!NILP (specified_data
))
6279 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
6281 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
6283 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
6284 fn_png_read_info (png_ptr
, info_ptr
);
6285 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
6286 &interlace_type
, NULL
, NULL
);
6288 if (!check_image_size (f
, width
, height
))
6291 /* If image contains simply transparency data, we prefer to
6292 construct a clipping mask. */
6293 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
6298 /* This function is easier to write if we only have to handle
6299 one data format: RGB or RGBA with 8 bits per channel. Let's
6300 transform other formats into that format. */
6302 /* Strip more than 8 bits per channel. */
6303 if (bit_depth
== 16)
6304 fn_png_set_strip_16 (png_ptr
);
6306 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
6308 fn_png_set_expand (png_ptr
);
6310 /* Convert grayscale images to RGB. */
6311 if (color_type
== PNG_COLOR_TYPE_GRAY
6312 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
6313 fn_png_set_gray_to_rgb (png_ptr
);
6315 screen_gamma
= (f
->gamma
? 1 / f
->gamma
/ 0.45455 : 2.2);
6317 #if 0 /* Avoid double gamma correction for PNG images. */
6318 { /* Tell the PNG lib to handle gamma correction for us. */
6321 #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
6322 if (png_get_sRGB (png_ptr
, info_ptr
, &intent
))
6323 /* The libpng documentation says this is right in this case. */
6324 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6327 if (png_get_gAMA (png_ptr
, info_ptr
, &image_gamma
))
6328 /* Image contains gamma information. */
6329 png_set_gamma (png_ptr
, screen_gamma
, image_gamma
);
6331 /* Use the standard default for the image gamma. */
6332 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
6336 /* Handle alpha channel by combining the image with a background
6337 color. Do this only if a real alpha channel is supplied. For
6338 simple transparency, we prefer a clipping mask. */
6341 png_color_16
*image_bg
;
6342 Lisp_Object specified_bg
6343 = image_spec_value (img
->spec
, QCbackground
, NULL
);
6345 if (STRINGP (specified_bg
))
6346 /* The user specified `:background', use that. */
6348 /* W32 version incorrectly used COLORREF here!! ++kfs */
6350 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
6352 png_color_16 user_bg
;
6354 bzero (&user_bg
, sizeof user_bg
);
6355 user_bg
.red
= color
.red
>> 8;
6356 user_bg
.green
= color
.green
>> 8;
6357 user_bg
.blue
= color
.blue
>> 8;
6359 fn_png_set_background (png_ptr
, &user_bg
,
6360 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6363 /* The commented-out code checked if the png specifies a default
6364 background color, and uses that. Since we use the current
6365 frame background, it is OK for us to ignore this.
6367 else if (fn_png_get_bKGD (png_ptr, info_ptr, &image_bg))
6368 fn_png_set_background (png_ptr, image_bg,
6369 PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
6373 /* Image does not contain a background color with which
6374 to combine the image data via an alpha channel. Use
6375 the frame's background instead. */
6376 #ifdef HAVE_X_WINDOWS
6378 png_color_16 frame_background
;
6380 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
6381 x_query_color (f
, &color
);
6383 bzero (&frame_background
, sizeof frame_background
);
6384 frame_background
.red
= color
.red
>> 8;
6385 frame_background
.green
= color
.green
>> 8;
6386 frame_background
.blue
= color
.blue
>> 8;
6387 #endif /* HAVE_X_WINDOWS */
6391 png_color_16 frame_background
;
6392 color
= FRAME_BACKGROUND_PIXEL (f
);
6393 #if 0 /* W32 TODO : Colormap support. */
6394 x_query_color (f
, &color
);
6396 bzero (&frame_background
, sizeof frame_background
);
6397 frame_background
.red
= GetRValue (color
);
6398 frame_background
.green
= GetGValue (color
);
6399 frame_background
.blue
= GetBValue (color
);
6400 #endif /* HAVE_NTGUI */
6403 unsigned long color
;
6404 png_color_16 frame_background
;
6405 color
= FRAME_BACKGROUND_PIXEL (f
);
6406 #if 0 /* MAC/W32 TODO : Colormap support. */
6407 x_query_color (f
, &color
);
6409 bzero (&frame_background
, sizeof frame_background
);
6410 frame_background
.red
= RED_FROM_ULONG (color
);
6411 frame_background
.green
= GREEN_FROM_ULONG (color
);
6412 frame_background
.blue
= BLUE_FROM_ULONG (color
);
6415 fn_png_set_background (png_ptr
, &frame_background
,
6416 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6420 /* Update info structure. */
6421 fn_png_read_update_info (png_ptr
, info_ptr
);
6423 /* Get number of channels. Valid values are 1 for grayscale images
6424 and images with a palette, 2 for grayscale images with transparency
6425 information (alpha channel), 3 for RGB images, and 4 for RGB
6426 images with alpha channel, i.e. RGBA. If conversions above were
6427 sufficient we should only have 3 or 4 channels here. */
6428 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
6429 xassert (channels
== 3 || channels
== 4);
6431 /* Number of bytes needed for one row of the image. */
6432 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
6434 /* Allocate memory for the image. */
6435 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
6436 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
6437 for (i
= 0; i
< height
; ++i
)
6438 rows
[i
] = pixels
+ i
* row_bytes
;
6440 /* Read the entire image. */
6441 fn_png_read_image (png_ptr
, rows
);
6442 fn_png_read_end (png_ptr
, info_ptr
);
6449 /* Create the X image and pixmap. */
6450 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
6454 /* Create an image and pixmap serving as mask if the PNG image
6455 contains an alpha channel. */
6458 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
6459 &mask_img
, &img
->mask
))
6461 x_destroy_x_image (ximg
);
6462 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
6463 img
->pixmap
= NO_PIXMAP
;
6467 /* Fill the X image and mask from PNG data. */
6468 init_color_table ();
6470 for (y
= 0; y
< height
; ++y
)
6472 png_byte
*p
= rows
[y
];
6474 for (x
= 0; x
< width
; ++x
)
6481 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
6482 /* An alpha channel, aka mask channel, associates variable
6483 transparency with an image. Where other image formats
6484 support binary transparency---fully transparent or fully
6485 opaque---PNG allows up to 254 levels of partial transparency.
6486 The PNG library implements partial transparency by combining
6487 the image with a specified background color.
6489 I'm not sure how to handle this here nicely: because the
6490 background on which the image is displayed may change, for
6491 real alpha channel support, it would be necessary to create
6492 a new image for each possible background.
6494 What I'm doing now is that a mask is created if we have
6495 boolean transparency information. Otherwise I'm using
6496 the frame's background color to combine the image with. */
6501 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
6507 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6508 /* Set IMG's background color from the PNG image, unless the user
6512 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
6514 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
6515 img
->background_valid
= 1;
6519 #ifdef COLOR_TABLE_SUPPORT
6520 /* Remember colors allocated for this image. */
6521 img
->colors
= colors_in_color_table (&img
->ncolors
);
6522 free_color_table ();
6523 #endif /* COLOR_TABLE_SUPPORT */
6526 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6531 img
->height
= height
;
6533 /* Maybe fill in the background field while we have ximg handy.
6534 Casting avoids a GCC warning. */
6535 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6537 /* Put the image into the pixmap, then free the X image and its buffer. */
6538 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6539 x_destroy_x_image (ximg
);
6541 /* Same for the mask. */
6544 /* Fill in the background_transparent field while we have the
6545 mask handy. Casting avoids a GCC warning. */
6546 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
6548 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
6549 x_destroy_x_image (mask_img
);
6556 #else /* HAVE_PNG */
6565 if (MyCGImageCreateWithPNGDataProvider
)
6566 return image_load_quartz2d (f
, img
, 1);
6569 return image_load_quicktime (f
, img
, kQTFileTypePNG
);
6573 #endif /* !HAVE_PNG */
6577 /***********************************************************************
6579 ***********************************************************************/
6581 #if defined (HAVE_JPEG) || defined (MAC_OS)
6583 static int jpeg_image_p
P_ ((Lisp_Object object
));
6584 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
6586 /* The symbol `jpeg' identifying images of this type. */
6590 /* Indices of image specification fields in gs_format, below. */
6592 enum jpeg_keyword_index
6601 JPEG_HEURISTIC_MASK
,
6607 /* Vector of image_keyword structures describing the format
6608 of valid user-defined image specifications. */
6610 static struct image_keyword jpeg_format
[JPEG_LAST
] =
6612 {":type", IMAGE_SYMBOL_VALUE
, 1},
6613 {":data", IMAGE_STRING_VALUE
, 0},
6614 {":file", IMAGE_STRING_VALUE
, 0},
6615 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6616 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6617 {":relief", IMAGE_INTEGER_VALUE
, 0},
6618 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6619 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6620 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6621 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6624 /* Structure describing the image type `jpeg'. */
6626 static struct image_type jpeg_type
=
6635 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6638 jpeg_image_p (object
)
6641 struct image_keyword fmt
[JPEG_LAST
];
6643 bcopy (jpeg_format
, fmt
, sizeof fmt
);
6645 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6648 /* Must specify either the :data or :file keyword. */
6649 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6652 #endif /* HAVE_JPEG || MAC_OS */
6656 /* Work around a warning about HAVE_STDLIB_H being redefined in
6658 #ifdef HAVE_STDLIB_H
6659 #define HAVE_STDLIB_H_1
6660 #undef HAVE_STDLIB_H
6661 #endif /* HAVE_STLIB_H */
6663 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6664 /* In older releases of the jpeg library, jpeglib.h will define boolean
6665 differently depending on __WIN32__, so make sure it is defined. */
6669 #include <jpeglib.h>
6673 #ifdef HAVE_STLIB_H_1
6674 #define HAVE_STDLIB_H 1
6679 /* JPEG library details. */
6680 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6681 DEF_IMGLIB_FN (jpeg_start_decompress
);
6682 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6683 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6684 DEF_IMGLIB_FN (jpeg_read_header
);
6685 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6686 DEF_IMGLIB_FN (jpeg_std_error
);
6687 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6690 init_jpeg_functions (Lisp_Object libraries
)
6694 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6697 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6698 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6699 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6700 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6701 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6702 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6703 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6704 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6708 /* Wrapper since we can't directly assign the function pointer
6709 to another function pointer that was declared more completely easily. */
6711 jpeg_resync_to_restart_wrapper(cinfo
, desired
)
6712 j_decompress_ptr cinfo
;
6715 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6720 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6721 #define fn_jpeg_start_decompress jpeg_start_decompress
6722 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6723 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6724 #define fn_jpeg_read_header jpeg_read_header
6725 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6726 #define fn_jpeg_std_error jpeg_std_error
6727 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6729 #endif /* HAVE_NTGUI */
6731 struct my_jpeg_error_mgr
6733 struct jpeg_error_mgr pub
;
6734 jmp_buf setjmp_buffer
;
6739 my_error_exit (cinfo
)
6742 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6743 longjmp (mgr
->setjmp_buffer
, 1);
6747 /* Init source method for JPEG data source manager. Called by
6748 jpeg_read_header() before any data is actually read. See
6749 libjpeg.doc from the JPEG lib distribution. */
6752 our_common_init_source (cinfo
)
6753 j_decompress_ptr cinfo
;
6758 /* Method to terminate data source. Called by
6759 jpeg_finish_decompress() after all data has been processed. */
6762 our_common_term_source (cinfo
)
6763 j_decompress_ptr cinfo
;
6768 /* Fill input buffer method for JPEG data source manager. Called
6769 whenever more data is needed. We read the whole image in one step,
6770 so this only adds a fake end of input marker at the end. */
6773 our_memory_fill_input_buffer (cinfo
)
6774 j_decompress_ptr cinfo
;
6776 /* Insert a fake EOI marker. */
6777 struct jpeg_source_mgr
*src
= cinfo
->src
;
6778 static JOCTET buffer
[2];
6780 buffer
[0] = (JOCTET
) 0xFF;
6781 buffer
[1] = (JOCTET
) JPEG_EOI
;
6783 src
->next_input_byte
= buffer
;
6784 src
->bytes_in_buffer
= 2;
6789 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6790 is the JPEG data source manager. */
6793 our_memory_skip_input_data (cinfo
, num_bytes
)
6794 j_decompress_ptr cinfo
;
6797 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6801 if (num_bytes
> src
->bytes_in_buffer
)
6802 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6804 src
->bytes_in_buffer
-= num_bytes
;
6805 src
->next_input_byte
+= num_bytes
;
6810 /* Set up the JPEG lib for reading an image from DATA which contains
6811 LEN bytes. CINFO is the decompression info structure created for
6812 reading the image. */
6815 jpeg_memory_src (cinfo
, data
, len
)
6816 j_decompress_ptr cinfo
;
6820 struct jpeg_source_mgr
*src
;
6822 if (cinfo
->src
== NULL
)
6824 /* First time for this JPEG object? */
6825 cinfo
->src
= (struct jpeg_source_mgr
*)
6826 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6827 sizeof (struct jpeg_source_mgr
));
6828 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6829 src
->next_input_byte
= data
;
6832 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6833 src
->init_source
= our_common_init_source
;
6834 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6835 src
->skip_input_data
= our_memory_skip_input_data
;
6836 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6837 src
->term_source
= our_common_term_source
;
6838 src
->bytes_in_buffer
= len
;
6839 src
->next_input_byte
= data
;
6843 struct jpeg_stdio_mgr
6845 struct jpeg_source_mgr mgr
;
6852 /* Size of buffer to read JPEG from file.
6853 Not too big, as we want to use alloc_small. */
6854 #define JPEG_STDIO_BUFFER_SIZE 8192
6857 /* Fill input buffer method for JPEG data source manager. Called
6858 whenever more data is needed. The data is read from a FILE *. */
6861 our_stdio_fill_input_buffer (cinfo
)
6862 j_decompress_ptr cinfo
;
6864 struct jpeg_stdio_mgr
*src
;
6866 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6871 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6873 src
->mgr
.bytes_in_buffer
= bytes
;
6876 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6878 src
->buffer
[0] = (JOCTET
) 0xFF;
6879 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6880 src
->mgr
.bytes_in_buffer
= 2;
6882 src
->mgr
.next_input_byte
= src
->buffer
;
6889 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6890 is the JPEG data source manager. */
6893 our_stdio_skip_input_data (cinfo
, num_bytes
)
6894 j_decompress_ptr cinfo
;
6897 struct jpeg_stdio_mgr
*src
;
6898 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6900 while (num_bytes
> 0 && !src
->finished
)
6902 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6904 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6905 src
->mgr
.next_input_byte
+= num_bytes
;
6910 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6911 src
->mgr
.bytes_in_buffer
= 0;
6912 src
->mgr
.next_input_byte
= NULL
;
6914 our_stdio_fill_input_buffer (cinfo
);
6920 /* Set up the JPEG lib for reading an image from a FILE *.
6921 CINFO is the decompression info structure created for
6922 reading the image. */
6925 jpeg_file_src (cinfo
, fp
)
6926 j_decompress_ptr cinfo
;
6929 struct jpeg_stdio_mgr
*src
;
6931 if (cinfo
->src
!= NULL
)
6932 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6935 /* First time for this JPEG object? */
6936 cinfo
->src
= (struct jpeg_source_mgr
*)
6937 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6938 sizeof (struct jpeg_stdio_mgr
));
6939 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6940 src
->buffer
= (JOCTET
*)
6941 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6942 JPEG_STDIO_BUFFER_SIZE
);
6947 src
->mgr
.init_source
= our_common_init_source
;
6948 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6949 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6950 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6951 src
->mgr
.term_source
= our_common_term_source
;
6952 src
->mgr
.bytes_in_buffer
= 0;
6953 src
->mgr
.next_input_byte
= NULL
;
6957 /* Load image IMG for use on frame F. Patterned after example.c
6958 from the JPEG lib. */
6965 struct jpeg_decompress_struct cinfo
;
6966 struct my_jpeg_error_mgr mgr
;
6967 Lisp_Object file
, specified_file
;
6968 Lisp_Object specified_data
;
6969 FILE * volatile fp
= NULL
;
6971 int row_stride
, x
, y
;
6972 XImagePtr ximg
= NULL
;
6974 unsigned long *colors
;
6976 struct gcpro gcpro1
;
6978 /* Open the JPEG file. */
6979 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6980 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6984 if (NILP (specified_data
))
6986 file
= x_find_image_file (specified_file
);
6987 if (!STRINGP (file
))
6989 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6994 fp
= fopen (SDATA (file
), "rb");
6997 image_error ("Cannot open `%s'", file
, Qnil
);
7003 /* Customize libjpeg's error handling to call my_error_exit when an
7004 error is detected. This function will perform a longjmp.
7005 Casting return value avoids a GCC warning on W32. */
7006 cinfo
.err
= (struct jpeg_error_mgr
*)fn_jpeg_std_error (&mgr
.pub
);
7007 mgr
.pub
.error_exit
= my_error_exit
;
7009 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
7013 /* Called from my_error_exit. Display a JPEG error. */
7014 char buffer
[JMSG_LENGTH_MAX
];
7015 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
7016 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
7017 build_string (buffer
));
7020 /* Close the input file and destroy the JPEG object. */
7022 fclose ((FILE *) fp
);
7023 fn_jpeg_destroy_decompress (&cinfo
);
7025 /* If we already have an XImage, free that. */
7026 x_destroy_x_image (ximg
);
7028 /* Free pixmap and colors. */
7029 x_clear_image (f
, img
);
7035 /* Create the JPEG decompression object. Let it read from fp.
7036 Read the JPEG image header. */
7037 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
7039 if (NILP (specified_data
))
7040 jpeg_file_src (&cinfo
, (FILE *) fp
);
7042 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
7043 SBYTES (specified_data
));
7045 fn_jpeg_read_header (&cinfo
, 1);
7047 /* Customize decompression so that color quantization will be used.
7048 Start decompression. */
7049 cinfo
.quantize_colors
= 1;
7050 fn_jpeg_start_decompress (&cinfo
);
7051 width
= img
->width
= cinfo
.output_width
;
7052 height
= img
->height
= cinfo
.output_height
;
7054 if (!check_image_size (f
, width
, height
))
7056 image_error ("Invalid image size", Qnil
, Qnil
);
7057 longjmp (mgr
.setjmp_buffer
, 2);
7060 /* Create X image and pixmap. */
7061 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7062 longjmp (mgr
.setjmp_buffer
, 2);
7064 /* Allocate colors. When color quantization is used,
7065 cinfo.actual_number_of_colors has been set with the number of
7066 colors generated, and cinfo.colormap is a two-dimensional array
7067 of color indices in the range 0..cinfo.actual_number_of_colors.
7068 No more than 255 colors will be generated. */
7072 if (cinfo
.out_color_components
> 2)
7073 ir
= 0, ig
= 1, ib
= 2;
7074 else if (cinfo
.out_color_components
> 1)
7075 ir
= 0, ig
= 1, ib
= 0;
7077 ir
= 0, ig
= 0, ib
= 0;
7079 /* Use the color table mechanism because it handles colors that
7080 cannot be allocated nicely. Such colors will be replaced with
7081 a default color, and we don't have to care about which colors
7082 can be freed safely, and which can't. */
7083 init_color_table ();
7084 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
7087 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
7089 /* Multiply RGB values with 255 because X expects RGB values
7090 in the range 0..0xffff. */
7091 int r
= cinfo
.colormap
[ir
][i
] << 8;
7092 int g
= cinfo
.colormap
[ig
][i
] << 8;
7093 int b
= cinfo
.colormap
[ib
][i
] << 8;
7094 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7097 #ifdef COLOR_TABLE_SUPPORT
7098 /* Remember those colors actually allocated. */
7099 img
->colors
= colors_in_color_table (&img
->ncolors
);
7100 free_color_table ();
7101 #endif /* COLOR_TABLE_SUPPORT */
7105 row_stride
= width
* cinfo
.output_components
;
7106 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
7108 for (y
= 0; y
< height
; ++y
)
7110 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
7111 for (x
= 0; x
< cinfo
.output_width
; ++x
)
7112 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
7116 fn_jpeg_finish_decompress (&cinfo
);
7117 fn_jpeg_destroy_decompress (&cinfo
);
7119 fclose ((FILE *) fp
);
7121 /* Maybe fill in the background field while we have ximg handy. */
7122 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7123 /* Casting avoids a GCC warning. */
7124 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7126 /* Put the image into the pixmap. */
7127 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7128 x_destroy_x_image (ximg
);
7133 #else /* HAVE_JPEG */
7142 return image_load_quartz2d (f
, img
, 0);
7144 return image_load_quicktime (f
, img
, kQTFileTypeJPEG
);
7149 #endif /* !HAVE_JPEG */
7153 /***********************************************************************
7155 ***********************************************************************/
7157 #if defined (HAVE_TIFF) || defined (MAC_OS)
7159 static int tiff_image_p
P_ ((Lisp_Object object
));
7160 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
7162 /* The symbol `tiff' identifying images of this type. */
7166 /* Indices of image specification fields in tiff_format, below. */
7168 enum tiff_keyword_index
7177 TIFF_HEURISTIC_MASK
,
7183 /* Vector of image_keyword structures describing the format
7184 of valid user-defined image specifications. */
7186 static struct image_keyword tiff_format
[TIFF_LAST
] =
7188 {":type", IMAGE_SYMBOL_VALUE
, 1},
7189 {":data", IMAGE_STRING_VALUE
, 0},
7190 {":file", IMAGE_STRING_VALUE
, 0},
7191 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7192 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7193 {":relief", IMAGE_INTEGER_VALUE
, 0},
7194 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7195 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7196 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7197 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7200 /* Structure describing the image type `tiff'. */
7202 static struct image_type tiff_type
=
7211 /* Return non-zero if OBJECT is a valid TIFF image specification. */
7214 tiff_image_p (object
)
7217 struct image_keyword fmt
[TIFF_LAST
];
7218 bcopy (tiff_format
, fmt
, sizeof fmt
);
7220 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
7223 /* Must specify either the :data or :file keyword. */
7224 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
7227 #endif /* HAVE_TIFF || MAC_OS */
7235 /* TIFF library details. */
7236 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
7237 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
7238 DEF_IMGLIB_FN (TIFFOpen
);
7239 DEF_IMGLIB_FN (TIFFClientOpen
);
7240 DEF_IMGLIB_FN (TIFFGetField
);
7241 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
7242 DEF_IMGLIB_FN (TIFFClose
);
7245 init_tiff_functions (Lisp_Object libraries
)
7249 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
7252 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
7253 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
7254 LOAD_IMGLIB_FN (library
, TIFFOpen
);
7255 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
7256 LOAD_IMGLIB_FN (library
, TIFFGetField
);
7257 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
7258 LOAD_IMGLIB_FN (library
, TIFFClose
);
7264 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
7265 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
7266 #define fn_TIFFOpen TIFFOpen
7267 #define fn_TIFFClientOpen TIFFClientOpen
7268 #define fn_TIFFGetField TIFFGetField
7269 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
7270 #define fn_TIFFClose TIFFClose
7272 #endif /* HAVE_NTGUI */
7275 /* Reading from a memory buffer for TIFF images Based on the PNG
7276 memory source, but we have to provide a lot of extra functions.
7279 We really only need to implement read and seek, but I am not
7280 convinced that the TIFF library is smart enough not to destroy
7281 itself if we only hand it the function pointers we need to
7286 unsigned char *bytes
;
7293 tiff_read_from_memory (data
, buf
, size
)
7298 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7300 if (size
> src
->len
- src
->index
)
7302 bcopy (src
->bytes
+ src
->index
, buf
, size
);
7308 tiff_write_from_memory (data
, buf
, size
)
7317 tiff_seek_in_memory (data
, off
, whence
)
7322 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
7327 case SEEK_SET
: /* Go from beginning of source. */
7331 case SEEK_END
: /* Go from end of source. */
7332 idx
= src
->len
+ off
;
7335 case SEEK_CUR
: /* Go from current position. */
7336 idx
= src
->index
+ off
;
7339 default: /* Invalid `whence'. */
7343 if (idx
> src
->len
|| idx
< 0)
7351 tiff_close_memory (data
)
7359 tiff_mmap_memory (data
, pbase
, psize
)
7364 /* It is already _IN_ memory. */
7369 tiff_unmap_memory (data
, base
, size
)
7374 /* We don't need to do this. */
7378 tiff_size_of_memory (data
)
7381 return ((tiff_memory_source
*) data
)->len
;
7386 tiff_error_handler (title
, format
, ap
)
7387 const char *title
, *format
;
7393 len
= sprintf (buf
, "TIFF error: %s ", title
);
7394 vsprintf (buf
+ len
, format
, ap
);
7395 add_to_log (buf
, Qnil
, Qnil
);
7400 tiff_warning_handler (title
, format
, ap
)
7401 const char *title
, *format
;
7407 len
= sprintf (buf
, "TIFF warning: %s ", title
);
7408 vsprintf (buf
+ len
, format
, ap
);
7409 add_to_log (buf
, Qnil
, Qnil
);
7413 /* Load TIFF image IMG for use on frame F. Value is non-zero if
7421 Lisp_Object file
, specified_file
;
7422 Lisp_Object specified_data
;
7424 int width
, height
, x
, y
;
7428 struct gcpro gcpro1
;
7429 tiff_memory_source memsrc
;
7431 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7432 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7436 fn_TIFFSetErrorHandler (tiff_error_handler
);
7437 fn_TIFFSetWarningHandler (tiff_warning_handler
);
7439 if (NILP (specified_data
))
7441 /* Read from a file */
7442 file
= x_find_image_file (specified_file
);
7443 if (!STRINGP (file
))
7445 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7450 /* Try to open the image file. Casting return value avoids a
7451 GCC warning on W32. */
7452 tiff
= (TIFF
*)fn_TIFFOpen (SDATA (file
), "r");
7455 image_error ("Cannot open `%s'", file
, Qnil
);
7462 /* Memory source! */
7463 memsrc
.bytes
= SDATA (specified_data
);
7464 memsrc
.len
= SBYTES (specified_data
);
7467 /* Casting return value avoids a GCC warning on W32. */
7468 tiff
= (TIFF
*)fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
7469 (TIFFReadWriteProc
) tiff_read_from_memory
,
7470 (TIFFReadWriteProc
) tiff_write_from_memory
,
7471 tiff_seek_in_memory
,
7473 tiff_size_of_memory
,
7479 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
7485 /* Get width and height of the image, and allocate a raster buffer
7486 of width x height 32-bit values. */
7487 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
7488 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
7490 if (!check_image_size (f
, width
, height
))
7492 image_error ("Invalid image size", Qnil
, Qnil
);
7497 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
7499 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
7500 fn_TIFFClose (tiff
);
7503 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
7509 /* Create the X image and pixmap. */
7510 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7517 /* Initialize the color table. */
7518 init_color_table ();
7520 /* Process the pixel raster. Origin is in the lower-left corner. */
7521 for (y
= 0; y
< height
; ++y
)
7523 uint32
*row
= buf
+ y
* width
;
7525 for (x
= 0; x
< width
; ++x
)
7527 uint32 abgr
= row
[x
];
7528 int r
= TIFFGetR (abgr
) << 8;
7529 int g
= TIFFGetG (abgr
) << 8;
7530 int b
= TIFFGetB (abgr
) << 8;
7531 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
7535 #ifdef COLOR_TABLE_SUPPORT
7536 /* Remember the colors allocated for the image. Free the color table. */
7537 img
->colors
= colors_in_color_table (&img
->ncolors
);
7538 free_color_table ();
7539 #endif /* COLOR_TABLE_SUPPORT */
7542 img
->height
= height
;
7544 /* Maybe fill in the background field while we have ximg handy. */
7545 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7546 /* Casting avoids a GCC warning on W32. */
7547 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7549 /* Put the image into the pixmap, then free the X image and its buffer. */
7550 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7551 x_destroy_x_image (ximg
);
7558 #else /* HAVE_TIFF */
7566 return image_load_quicktime (f
, img
, kQTFileTypeTIFF
);
7570 #endif /* !HAVE_TIFF */
7574 /***********************************************************************
7576 ***********************************************************************/
7578 #if defined (HAVE_GIF) || defined (MAC_OS)
7580 static int gif_image_p
P_ ((Lisp_Object object
));
7581 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
7582 static void gif_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7584 /* The symbol `gif' identifying images of this type. */
7588 /* Indices of image specification fields in gif_format, below. */
7590 enum gif_keyword_index
7606 /* Vector of image_keyword structures describing the format
7607 of valid user-defined image specifications. */
7609 static struct image_keyword gif_format
[GIF_LAST
] =
7611 {":type", IMAGE_SYMBOL_VALUE
, 1},
7612 {":data", IMAGE_STRING_VALUE
, 0},
7613 {":file", IMAGE_STRING_VALUE
, 0},
7614 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7615 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7616 {":relief", IMAGE_INTEGER_VALUE
, 0},
7617 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7618 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7619 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7620 {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
7621 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7624 /* Structure describing the image type `gif'. */
7626 static struct image_type gif_type
=
7635 /* Free X resources of GIF image IMG which is used on frame F. */
7638 gif_clear_image (f
, img
)
7642 /* IMG->data.ptr_val may contain extension data. */
7643 img
->data
.lisp_val
= Qnil
;
7644 x_clear_image (f
, img
);
7647 /* Return non-zero if OBJECT is a valid GIF image specification. */
7650 gif_image_p (object
)
7653 struct image_keyword fmt
[GIF_LAST
];
7654 bcopy (gif_format
, fmt
, sizeof fmt
);
7656 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7659 /* Must specify either the :data or :file keyword. */
7660 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7663 #endif /* HAVE_GIF || MAC_OS */
7667 #if defined (HAVE_NTGUI) || defined (MAC_OS)
7668 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
7669 Undefine before redefining to avoid a preprocessor warning. */
7673 /* avoid conflict with QuickdrawText.h */
7674 #define DrawText gif_DrawText
7675 #include <gif_lib.h>
7678 #else /* HAVE_NTGUI || MAC_OS */
7680 #include <gif_lib.h>
7682 #endif /* HAVE_NTGUI || MAC_OS */
7687 /* GIF library details. */
7688 DEF_IMGLIB_FN (DGifCloseFile
);
7689 DEF_IMGLIB_FN (DGifSlurp
);
7690 DEF_IMGLIB_FN (DGifOpen
);
7691 DEF_IMGLIB_FN (DGifOpenFileName
);
7694 init_gif_functions (Lisp_Object libraries
)
7698 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7701 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7702 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7703 LOAD_IMGLIB_FN (library
, DGifOpen
);
7704 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7710 #define fn_DGifCloseFile DGifCloseFile
7711 #define fn_DGifSlurp DGifSlurp
7712 #define fn_DGifOpen DGifOpen
7713 #define fn_DGifOpenFileName DGifOpenFileName
7715 #endif /* HAVE_NTGUI */
7717 /* Reading a GIF image from memory
7718 Based on the PNG memory stuff to a certain extent. */
7722 unsigned char *bytes
;
7728 /* Make the current memory source available to gif_read_from_memory.
7729 It's done this way because not all versions of libungif support
7730 a UserData field in the GifFileType structure. */
7731 static gif_memory_source
*current_gif_memory_src
;
7734 gif_read_from_memory (file
, buf
, len
)
7739 gif_memory_source
*src
= current_gif_memory_src
;
7741 if (len
> src
->len
- src
->index
)
7744 bcopy (src
->bytes
+ src
->index
, buf
, len
);
7750 /* Load GIF image IMG for use on frame F. Value is non-zero if
7758 Lisp_Object file
, specified_file
;
7759 Lisp_Object specified_data
;
7760 int rc
, width
, height
, x
, y
, i
;
7762 ColorMapObject
*gif_color_map
;
7763 unsigned long pixel_colors
[256];
7765 struct gcpro gcpro1
;
7767 int ino
, image_height
, image_width
;
7768 gif_memory_source memsrc
;
7769 unsigned char *raster
;
7771 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7772 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7776 if (NILP (specified_data
))
7778 file
= x_find_image_file (specified_file
);
7779 if (!STRINGP (file
))
7781 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7786 /* Open the GIF file. Casting return value avoids a GCC warning
7788 gif
= (GifFileType
*)fn_DGifOpenFileName (SDATA (file
));
7791 image_error ("Cannot open `%s'", file
, Qnil
);
7798 /* Read from memory! */
7799 current_gif_memory_src
= &memsrc
;
7800 memsrc
.bytes
= SDATA (specified_data
);
7801 memsrc
.len
= SBYTES (specified_data
);
7804 /* Casting return value avoids a GCC warning on W32. */
7805 gif
= (GifFileType
*)fn_DGifOpen(&memsrc
, gif_read_from_memory
);
7808 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7814 /* Before reading entire contents, check the declared image size. */
7815 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7817 image_error ("Invalid image size", Qnil
, Qnil
);
7818 fn_DGifCloseFile (gif
);
7823 /* Read entire contents. */
7824 rc
= fn_DGifSlurp (gif
);
7825 if (rc
== GIF_ERROR
)
7827 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7828 fn_DGifCloseFile (gif
);
7833 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7834 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7835 if (ino
>= gif
->ImageCount
)
7837 image_error ("Invalid image number `%s' in image `%s'",
7839 fn_DGifCloseFile (gif
);
7844 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7845 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7846 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7847 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7848 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7849 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7851 width
= img
->width
= max (gif
->SWidth
,
7852 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7853 img
->corners
[RIGHT_CORNER
]));
7854 height
= img
->height
= max (gif
->SHeight
,
7855 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7856 img
->corners
[BOT_CORNER
]));
7858 if (!check_image_size (f
, width
, height
))
7860 image_error ("Invalid image size", Qnil
, Qnil
);
7861 fn_DGifCloseFile (gif
);
7866 /* Create the X image and pixmap. */
7867 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7869 fn_DGifCloseFile (gif
);
7874 /* Allocate colors. */
7875 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7877 gif_color_map
= gif
->SColorMap
;
7878 init_color_table ();
7879 bzero (pixel_colors
, sizeof pixel_colors
);
7882 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7884 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7885 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7886 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7887 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7890 #ifdef COLOR_TABLE_SUPPORT
7891 img
->colors
= colors_in_color_table (&img
->ncolors
);
7892 free_color_table ();
7893 #endif /* COLOR_TABLE_SUPPORT */
7895 /* Clear the part of the screen image that are not covered by
7896 the image from the GIF file. Full animated GIF support
7897 requires more than can be done here (see the gif89 spec,
7898 disposal methods). Let's simply assume that the part
7899 not covered by a sub-image is in the frame's background color. */
7900 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7901 for (x
= 0; x
< width
; ++x
)
7902 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7904 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7905 for (x
= 0; x
< width
; ++x
)
7906 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7908 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7910 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7911 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7912 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7913 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7916 /* Read the GIF image into the X image. We use a local variable
7917 `raster' here because RasterBits below is a char *, and invites
7918 problems with bytes >= 0x80. */
7919 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7921 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7923 static int interlace_start
[] = {0, 4, 2, 1};
7924 static int interlace_increment
[] = {8, 8, 4, 2};
7926 int row
= interlace_start
[0];
7930 for (y
= 0; y
< image_height
; y
++)
7932 if (row
>= image_height
)
7934 row
= interlace_start
[++pass
];
7935 while (row
>= image_height
)
7936 row
= interlace_start
[++pass
];
7939 for (x
= 0; x
< image_width
; x
++)
7941 int i
= raster
[(y
* image_width
) + x
];
7942 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7943 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7946 row
+= interlace_increment
[pass
];
7951 for (y
= 0; y
< image_height
; ++y
)
7952 for (x
= 0; x
< image_width
; ++x
)
7954 int i
= raster
[y
* image_width
+ x
];
7955 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7956 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[i
]);
7960 /* Save GIF image extension data for `image-extension-data'.
7961 Format is (count IMAGES FUNCTION "BYTES" ...). */
7962 img
->data
.lisp_val
= Qnil
;
7963 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7965 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7966 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7967 /* Append (... FUNCTION "BYTES") */
7968 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7969 Fcons (make_number (ext
->Function
),
7970 img
->data
.lisp_val
));
7971 img
->data
.lisp_val
= Fnreverse (img
->data
.lisp_val
);
7973 if (gif
->ImageCount
> 1)
7974 img
->data
.lisp_val
= Fcons (Qcount
,
7975 Fcons (make_number (gif
->ImageCount
),
7976 img
->data
.lisp_val
));
7978 fn_DGifCloseFile (gif
);
7980 /* Maybe fill in the background field while we have ximg handy. */
7981 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7982 /* Casting avoids a GCC warning. */
7983 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7985 /* Put the image into the pixmap, then free the X image and its buffer. */
7986 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7987 x_destroy_x_image (ximg
);
7993 #else /* !HAVE_GIF */
8001 Lisp_Object specified_file
, file
;
8002 Lisp_Object specified_data
;
8004 Boolean graphic_p
, movie_p
, prefer_graphic_p
;
8012 Lisp_Object specified_bg
;
8017 TimeScale time_scale
;
8018 TimeValue time
, duration
;
8023 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
8024 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
8026 /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */
8029 if (NILP (specified_data
))
8031 /* Read from a file */
8035 err
= find_image_fsspec (specified_file
, &file
, &fss
);
8039 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
8044 err
= CanQuickTimeOpenFile (&fss
, kQTFileTypeGIF
, 0,
8045 &graphic_p
, &movie_p
, &prefer_graphic_p
, 0);
8049 if (!graphic_p
&& !movie_p
)
8051 if (prefer_graphic_p
)
8052 return image_load_qt_1 (f
, img
, kQTFileTypeGIF
, &fss
, NULL
);
8053 err
= OpenMovieFile (&fss
, &refnum
, fsRdPerm
);
8056 err
= NewMovieFromFile (&movie
, refnum
, NULL
, NULL
, 0, NULL
);
8057 CloseMovieFile (refnum
);
8060 image_error ("Error reading `%s'", file
, Qnil
);
8066 /* Memory source! */
8068 long file_type_atom
[3];
8070 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
8073 image_error ("Cannot allocate data handle for `%s'",
8078 file_type_atom
[0] = EndianU32_NtoB (sizeof (long) * 3);
8079 file_type_atom
[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType
);
8080 file_type_atom
[2] = EndianU32_NtoB (kQTFileTypeGIF
);
8081 err
= PtrToHand (&dh
, &dref
, sizeof (Handle
));
8084 err
= PtrAndHand ("\p", dref
, 1);
8086 err
= PtrAndHand (file_type_atom
, dref
, sizeof (long) * 3);
8089 image_error ("Cannot allocate handle data ref for `%s'", img
->spec
, Qnil
);
8092 err
= CanQuickTimeOpenDataRef (dref
, HandleDataHandlerSubType
, &graphic_p
,
8093 &movie_p
, &prefer_graphic_p
, 0);
8097 if (!graphic_p
&& !movie_p
)
8099 if (prefer_graphic_p
)
8103 DisposeHandle (dref
);
8104 success_p
= image_load_qt_1 (f
, img
, kQTFileTypeGIF
, NULL
, dh
);
8108 err
= NewMovieFromDataRef (&movie
, 0, NULL
, dref
,
8109 HandleDataHandlerSubType
);
8110 DisposeHandle (dref
);
8115 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
8116 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
8117 track
= GetMovieIndTrack (movie
, 1);
8118 media
= GetTrackMedia (track
);
8119 nsamples
= GetMediaSampleCount (media
);
8120 if (ino
>= nsamples
)
8122 image_error ("Invalid image number `%s' in image `%s'",
8126 time_scale
= GetMediaTimeScale (media
);
8128 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8129 if (!STRINGP (specified_bg
) ||
8130 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
8132 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8133 color
.red
= RED16_FROM_ULONG (color
.pixel
);
8134 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
8135 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
8137 GetMovieBox (movie
, &rect
);
8138 width
= img
->width
= rect
.right
- rect
.left
;
8139 height
= img
->height
= rect
.bottom
- rect
.top
;
8140 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8143 GetGWorld (&old_port
, &old_gdh
);
8144 SetGWorld (ximg
, NULL
);
8145 bg_color
.red
= color
.red
;
8146 bg_color
.green
= color
.green
;
8147 bg_color
.blue
= color
.blue
;
8148 RGBBackColor (&bg_color
);
8149 SetGWorld (old_port
, old_gdh
);
8150 SetMovieActive (movie
, 1);
8151 SetMovieGWorld (movie
, ximg
, NULL
);
8152 SampleNumToMediaTime (media
, ino
+ 1, &time
, &duration
);
8153 SetMovieTimeValue (movie
, time
);
8154 MoviesTask (movie
, 0L);
8155 DisposeTrackMedia (media
);
8156 DisposeMovieTrack (track
);
8157 DisposeMovie (movie
);
8161 /* Save GIF image extension data for `image-extension-data'.
8162 Format is (count IMAGES 0xf9 GRAPHIC_CONTROL_EXTENSION_BLOCK). */
8164 Lisp_Object gce
= make_uninit_string (4);
8165 int centisec
= ((float)duration
/ time_scale
) * 100.0f
+ 0.5f
;
8167 /* Fill the delay time field. */
8168 SSET (gce
, 1, centisec
& 0xff);
8169 SSET (gce
, 2, (centisec
>> 8) & 0xff);
8170 /* We don't know about other fields. */
8174 img
->data
.lisp_val
= list4 (Qcount
, make_number (nsamples
),
8175 make_number (0xf9), gce
);
8178 /* Maybe fill in the background field while we have ximg handy. */
8179 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
8180 IMAGE_BACKGROUND (img
, f
, ximg
);
8182 /* Put the image into the pixmap. */
8183 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8184 x_destroy_x_image (ximg
);
8188 image_error ("Cannot open `%s'", file
, Qnil
);
8191 DisposeTrackMedia (media
);
8193 DisposeMovieTrack (track
);
8195 DisposeMovie (movie
);
8202 #endif /* HAVE_GIF */
8206 /***********************************************************************
8208 ***********************************************************************/
8210 #ifdef HAVE_X_WINDOWS
8211 #define HAVE_GHOSTSCRIPT 1
8212 #endif /* HAVE_X_WINDOWS */
8214 /* The symbol `postscript' identifying images of this type. */
8216 Lisp_Object Qpostscript
;
8218 #ifdef HAVE_GHOSTSCRIPT
8220 static int gs_image_p
P_ ((Lisp_Object object
));
8221 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
8222 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
8224 /* Keyword symbols. */
8226 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8228 /* Indices of image specification fields in gs_format, below. */
8230 enum gs_keyword_index
8248 /* Vector of image_keyword structures describing the format
8249 of valid user-defined image specifications. */
8251 static struct image_keyword gs_format
[GS_LAST
] =
8253 {":type", IMAGE_SYMBOL_VALUE
, 1},
8254 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8255 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8256 {":file", IMAGE_STRING_VALUE
, 1},
8257 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8258 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8259 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8260 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8261 {":relief", IMAGE_INTEGER_VALUE
, 0},
8262 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8263 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8264 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8265 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8268 /* Structure describing the image type `ghostscript'. */
8270 static struct image_type gs_type
=
8280 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8283 gs_clear_image (f
, img
)
8287 /* IMG->data.ptr_val may contain a recorded colormap. */
8288 xfree (img
->data
.ptr_val
);
8289 x_clear_image (f
, img
);
8293 /* Return non-zero if OBJECT is a valid Ghostscript image
8300 struct image_keyword fmt
[GS_LAST
];
8304 bcopy (gs_format
, fmt
, sizeof fmt
);
8306 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8309 /* Bounding box must be a list or vector containing 4 integers. */
8310 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8313 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8314 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8319 else if (VECTORP (tem
))
8321 if (XVECTOR (tem
)->size
!= 4)
8323 for (i
= 0; i
< 4; ++i
)
8324 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8334 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8343 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8344 struct gcpro gcpro1
, gcpro2
;
8346 double in_width
, in_height
;
8347 Lisp_Object pixel_colors
= Qnil
;
8349 /* Compute pixel size of pixmap needed from the given size in the
8350 image specification. Sizes in the specification are in pt. 1 pt
8351 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8353 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8354 in_width
= XFASTINT (pt_width
) / 72.0;
8355 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8356 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8357 in_height
= XFASTINT (pt_height
) / 72.0;
8358 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8360 if (!check_image_size (f
, img
->width
, img
->height
))
8362 image_error ("Invalid image size", Qnil
, Qnil
);
8366 /* Create the pixmap. */
8367 xassert (img
->pixmap
== NO_PIXMAP
);
8369 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8371 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8372 img
->width
, img
->height
,
8373 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8378 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8382 /* Call the loader to fill the pixmap. It returns a process object
8383 if successful. We do not record_unwind_protect here because
8384 other places in redisplay like calling window scroll functions
8385 don't either. Let the Lisp loader use `unwind-protect' instead. */
8386 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
8388 sprintf (buffer
, "%lu %lu",
8389 (unsigned long) FRAME_X_WINDOW (f
),
8390 (unsigned long) img
->pixmap
);
8391 window_and_pixmap_id
= build_string (buffer
);
8393 sprintf (buffer
, "%lu %lu",
8394 FRAME_FOREGROUND_PIXEL (f
),
8395 FRAME_BACKGROUND_PIXEL (f
));
8396 pixel_colors
= build_string (buffer
);
8398 XSETFRAME (frame
, f
);
8399 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8401 loader
= intern ("gs-load-image");
8403 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8404 make_number (img
->width
),
8405 make_number (img
->height
),
8406 window_and_pixmap_id
,
8409 return PROCESSP (img
->data
.lisp_val
);
8413 /* Kill the Ghostscript process that was started to fill PIXMAP on
8414 frame F. Called from XTread_socket when receiving an event
8415 telling Emacs that Ghostscript has finished drawing. */
8418 x_kill_gs_process (pixmap
, f
)
8422 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
8426 /* Find the image containing PIXMAP. */
8427 for (i
= 0; i
< c
->used
; ++i
)
8428 if (c
->images
[i
]->pixmap
== pixmap
)
8431 /* Should someone in between have cleared the image cache, for
8432 instance, give up. */
8436 /* Kill the GS process. We should have found PIXMAP in the image
8437 cache and its image should contain a process object. */
8439 xassert (PROCESSP (img
->data
.lisp_val
));
8440 Fkill_process (img
->data
.lisp_val
, Qnil
);
8441 img
->data
.lisp_val
= Qnil
;
8443 #if defined (HAVE_X_WINDOWS)
8445 /* On displays with a mutable colormap, figure out the colors
8446 allocated for the image by looking at the pixels of an XImage for
8448 class = FRAME_X_VISUAL (f
)->class;
8449 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8455 /* Try to get an XImage for img->pixmep. */
8456 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8457 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8462 /* Initialize the color table. */
8463 init_color_table ();
8465 /* For each pixel of the image, look its color up in the
8466 color table. After having done so, the color table will
8467 contain an entry for each color used by the image. */
8468 for (y
= 0; y
< img
->height
; ++y
)
8469 for (x
= 0; x
< img
->width
; ++x
)
8471 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8472 lookup_pixel_color (f
, pixel
);
8475 /* Record colors in the image. Free color table and XImage. */
8476 #ifdef COLOR_TABLE_SUPPORT
8477 img
->colors
= colors_in_color_table (&img
->ncolors
);
8478 free_color_table ();
8480 XDestroyImage (ximg
);
8482 #if 0 /* This doesn't seem to be the case. If we free the colors
8483 here, we get a BadAccess later in x_clear_image when
8484 freeing the colors. */
8485 /* We have allocated colors once, but Ghostscript has also
8486 allocated colors on behalf of us. So, to get the
8487 reference counts right, free them once. */
8489 x_free_colors (f
, img
->colors
, img
->ncolors
);
8493 image_error ("Cannot get X image of `%s'; colors will not be freed",
8498 #endif /* HAVE_X_WINDOWS */
8500 /* Now that we have the pixmap, compute mask and transform the
8501 image if requested. */
8503 postprocess_image (f
, img
);
8507 #endif /* HAVE_GHOSTSCRIPT */
8510 /***********************************************************************
8512 ***********************************************************************/
8516 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8517 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8521 return valid_image_p (spec
) ? Qt
: Qnil
;
8525 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8531 if (valid_image_p (spec
))
8532 id
= lookup_image (SELECTED_FRAME (), spec
);
8535 return make_number (id
);
8538 #endif /* GLYPH_DEBUG != 0 */
8541 /***********************************************************************
8543 ***********************************************************************/
8546 /* Image types that rely on external libraries are loaded dynamically
8547 if the library is available. */
8548 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8549 define_image_type (image_type, init_lib_fn (libraries))
8551 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8552 define_image_type (image_type, 1)
8553 #endif /* HAVE_NTGUI */
8555 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8556 doc
: /* Initialize image library implementing image type TYPE.
8557 Return non-nil if TYPE is a supported image type.
8559 Image types pbm and xbm are prebuilt; other types are loaded here.
8560 Libraries to load are specified in alist LIBRARIES (usually, the value
8561 of `image-library-alist', which see). */)
8563 Lisp_Object type
, libraries
;
8567 /* Don't try to reload the library. */
8568 tested
= Fassq (type
, Vimage_type_cache
);
8570 return XCDR (tested
);
8572 #if defined (HAVE_XPM) || defined (MAC_OS)
8573 if (EQ (type
, Qxpm
))
8574 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8577 #if defined (HAVE_JPEG) || defined (MAC_OS)
8578 if (EQ (type
, Qjpeg
))
8579 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8582 #if defined (HAVE_TIFF) || defined (MAC_OS)
8583 if (EQ (type
, Qtiff
))
8584 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8587 #if defined (HAVE_GIF) || defined (MAC_OS)
8588 if (EQ (type
, Qgif
))
8589 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8592 #if defined (HAVE_PNG) || defined (MAC_OS)
8593 if (EQ (type
, Qpng
))
8594 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8597 #ifdef HAVE_GHOSTSCRIPT
8598 if (EQ (type
, Qpostscript
))
8599 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8602 /* If the type is not recognized, avoid testing it ever again. */
8603 CACHE_IMAGE_TYPE (type
, Qnil
);
8610 extern Lisp_Object Qrisky_local_variable
; /* Syms_of_xdisp has already run. */
8612 /* Initialize this only once, since that's what we do with Vimage_types
8613 and they are supposed to be in sync. Initializing here gives correct
8614 operation on GNU/Linux of calling dump-emacs after loading some images. */
8617 /* Must be defined now becase we're going to update it below, while
8618 defining the supported image types. */
8619 DEFVAR_LISP ("image-types", &Vimage_types
,
8620 doc
: /* List of potentially supported image types.
8621 Each element of the list is a symbol for a image type, like 'jpeg or 'png.
8622 To check whether it is really supported, use `image-type-available-p'. */);
8623 Vimage_types
= Qnil
;
8625 DEFVAR_LISP ("image-library-alist", &Vimage_library_alist
,
8626 doc
: /* Alist of image types vs external libraries needed to display them.
8628 Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol
8629 representing a supported image type, and the rest are strings giving
8630 alternate filenames for the corresponding external libraries.
8632 Emacs tries to load the libraries in the order they appear on the
8633 list; if none is loaded, the running session of Emacs won't
8634 support the image type. Types 'pbm and 'xbm don't need to be
8635 listed; they are always supported. */);
8636 Vimage_library_alist
= Qnil
;
8637 Fput (intern ("image-library-alist"), Qrisky_local_variable
, Qt
);
8639 DEFVAR_LISP ("max-image-size", &Vmax_image_size
,
8640 doc
: /* Maximum size of images.
8641 Emacs will not load an image into memory if its pixel width or
8642 pixel height exceeds this limit.
8644 If the value is an integer, it directly specifies the maximum
8645 image height and width, measured in pixels. If it is a floating
8646 point number, it specifies the maximum image height and width
8647 as a ratio to the frame height and width. If the value is
8648 non-numeric, there is no explicit limit on the size of images. */);
8649 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8651 Vimage_type_cache
= Qnil
;
8652 staticpro (&Vimage_type_cache
);
8654 Qpbm
= intern ("pbm");
8656 ADD_IMAGE_TYPE(Qpbm
);
8658 Qxbm
= intern ("xbm");
8660 ADD_IMAGE_TYPE(Qxbm
);
8662 define_image_type (&xbm_type
, 1);
8663 define_image_type (&pbm_type
, 1);
8665 QCascent
= intern (":ascent");
8666 staticpro (&QCascent
);
8667 QCmargin
= intern (":margin");
8668 staticpro (&QCmargin
);
8669 QCrelief
= intern (":relief");
8670 staticpro (&QCrelief
);
8671 QCconversion
= intern (":conversion");
8672 staticpro (&QCconversion
);
8673 QCcolor_symbols
= intern (":color-symbols");
8674 staticpro (&QCcolor_symbols
);
8675 QCheuristic_mask
= intern (":heuristic-mask");
8676 staticpro (&QCheuristic_mask
);
8677 QCindex
= intern (":index");
8678 staticpro (&QCindex
);
8679 QCmatrix
= intern (":matrix");
8680 staticpro (&QCmatrix
);
8681 QCcolor_adjustment
= intern (":color-adjustment");
8682 staticpro (&QCcolor_adjustment
);
8683 QCmask
= intern (":mask");
8684 staticpro (&QCmask
);
8686 Qlaplace
= intern ("laplace");
8687 staticpro (&Qlaplace
);
8688 Qemboss
= intern ("emboss");
8689 staticpro (&Qemboss
);
8690 Qedge_detection
= intern ("edge-detection");
8691 staticpro (&Qedge_detection
);
8692 Qheuristic
= intern ("heuristic");
8693 staticpro (&Qheuristic
);
8695 Qpostscript
= intern ("postscript");
8696 staticpro (&Qpostscript
);
8697 #ifdef HAVE_GHOSTSCRIPT
8698 ADD_IMAGE_TYPE(Qpostscript
);
8699 QCloader
= intern (":loader");
8700 staticpro (&QCloader
);
8701 QCbounding_box
= intern (":bounding-box");
8702 staticpro (&QCbounding_box
);
8703 QCpt_width
= intern (":pt-width");
8704 staticpro (&QCpt_width
);
8705 QCpt_height
= intern (":pt-height");
8706 staticpro (&QCpt_height
);
8707 #endif /* HAVE_GHOSTSCRIPT */
8709 #if defined (HAVE_XPM) || defined (MAC_OS)
8710 Qxpm
= intern ("xpm");
8712 ADD_IMAGE_TYPE(Qxpm
);
8715 #if defined (HAVE_JPEG) || defined (MAC_OS)
8716 Qjpeg
= intern ("jpeg");
8718 ADD_IMAGE_TYPE(Qjpeg
);
8721 #if defined (HAVE_TIFF) || defined (MAC_OS)
8722 Qtiff
= intern ("tiff");
8724 ADD_IMAGE_TYPE(Qtiff
);
8727 #if defined (HAVE_GIF) || defined (MAC_OS)
8728 Qgif
= intern ("gif");
8730 ADD_IMAGE_TYPE(Qgif
);
8733 #if defined (HAVE_PNG) || defined (MAC_OS)
8734 Qpng
= intern ("png");
8736 ADD_IMAGE_TYPE(Qpng
);
8739 defsubr (&Sinit_image_library
);
8740 defsubr (&Sclear_image_cache
);
8741 defsubr (&Simage_refresh
);
8742 defsubr (&Simage_size
);
8743 defsubr (&Simage_mask_p
);
8744 defsubr (&Simage_extension_data
);
8748 defsubr (&Slookup_image
);
8751 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8752 doc
: /* Non-nil means always draw a cross over disabled images.
8753 Disabled images are those having a `:conversion disabled' property.
8754 A cross is always drawn on black & white displays. */);
8755 cross_disabled_images
= 0;
8757 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8758 doc
: /* List of directories to search for window system bitmap files. */);
8759 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8761 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8762 doc
: /* Time after which cached images are removed from the cache.
8763 When an image has not been displayed this many seconds, remove it
8764 from the image cache. Value must be an integer or nil with nil
8765 meaning don't clear the cache. */);
8766 Vimage_cache_eviction_delay
= make_number (30 * 60);
8772 #if defined (MAC_OSX) && TARGET_API_MAC_CARBON
8773 init_image_func_pointer ();
8777 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8778 (do not change this comment) */