1 /* Functions for image support on window system.
2 Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 98, 99, 2000,01,02,03,04
3 Free Software Foundation.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
32 /* This makes the fields of a Display accessible, in Xlib header files. */
34 #define XLIB_ILLEGAL_ACCESS
39 #include "dispextern.h"
40 #include "blockinput.h"
47 #include <sys/types.h>
50 #define COLOR_TABLE_SUPPORT 1
52 typedef struct x_bitmap_record Bitmap_Record
;
53 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
54 #define NO_PIXMAP None
56 #define RGB_PIXEL_COLOR unsigned long
58 #define PIX_MASK_RETAIN(f) 0
59 #define PIX_MASK_DRAW(f) 1
60 #endif /* HAVE_X_WINDOWS */
66 /* W32_TODO : Color tables on W32. */
67 #undef COLOR_TABLE_SUPPORT
69 typedef struct w32_bitmap_record Bitmap_Record
;
70 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
73 #define RGB_PIXEL_COLOR COLORREF
75 #define PIX_MASK_RETAIN(f) 0
76 #define PIX_MASK_DRAW(f) 1
78 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
79 #define x_defined_color w32_defined_color
80 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
81 #endif /* HAVE_NTGUI */
91 #include <QuickTime/QuickTime.h>
92 #else /* not MAC_OSX */
95 #include <TextUtils.h>
96 #endif /* not MAC_OSX */
98 /* MAC_TODO : Color tables on Mac. */
99 #undef COLOR_TABLE_SUPPORT
101 #define ZPixmap 0 /* arbitrary */
102 typedef struct mac_bitmap_record Bitmap_Record
;
104 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
107 #define RGB_PIXEL_COLOR unsigned long
109 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
110 #define x_defined_color mac_defined_color
111 #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes)
112 #define XDrawLine(display, w, gc, x1, y1, x2, y2) \
113 mac_draw_line_to_pixmap(display, w, gc, x1, y1, x2, y2)
118 /* Search path for bitmap files. */
120 Lisp_Object Vx_bitmap_file_path
;
123 static void x_disable_image
P_ ((struct frame
*, struct image
*));
124 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
127 static void init_color_table
P_ ((void));
128 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
129 #ifdef COLOR_TABLE_SUPPORT
130 static void free_color_table
P_ ((void));
131 static unsigned long *colors_in_color_table
P_ ((int *n
));
132 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
135 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
136 id, which is just an int that this section returns. Bitmaps are
137 reference counted so they can be shared among frames.
139 Bitmap indices are guaranteed to be > 0, so a negative number can
140 be used to indicate no bitmap.
142 If you use x_create_bitmap_from_data, then you must keep track of
143 the bitmaps yourself. That is, creating a bitmap from the same
144 data more than once will not be caught. */
149 XGetImage (display
, pixmap
, x
, y
, width
, height
, plane_mask
, format
)
150 Display
*display
; /* not used */
152 int x
, y
; /* not used */
153 unsigned int width
, height
; /* not used */
154 unsigned long plane_mask
; /* not used */
155 int format
; /* not used */
158 xassert (x
== 0 && y
== 0);
161 SetRect (&ri
, 0, 0, width
, height
);
162 xassert (EqualRect (&ri
, GetPixBounds (GetGWorldPixMap (pixmap
), &rp
)));
164 xassert (! (pixelsLocked
& GetPixelsState (GetGWorldPixMap (pixmap
))));
167 LockPixels (GetGWorldPixMap (pixmap
));
173 XPutPixel (ximage
, x
, y
, pixel
)
182 GetGWorld (&old_port
, &old_gdh
);
183 SetGWorld (ximage
, NULL
);
185 color
.red
= RED16_FROM_ULONG (pixel
);
186 color
.green
= GREEN16_FROM_ULONG (pixel
);
187 color
.blue
= BLUE16_FROM_ULONG (pixel
);
188 SetCPixel (x
, y
, &color
);
190 SetGWorld (old_port
, old_gdh
);
194 XGetPixel (ximage
, x
, y
)
202 GetGWorld (&old_port
, &old_gdh
);
203 SetGWorld (ximage
, NULL
);
205 GetCPixel (x
, y
, &color
);
207 SetGWorld (old_port
, old_gdh
);
208 return RGB_TO_ULONG (color
.red
>> 8, color
.green
>> 8, color
.blue
>> 8);
215 UnlockPixels (GetGWorldPixMap (ximg
));
220 /* Functions to access the contents of a bitmap, given an id. */
223 x_bitmap_height (f
, id
)
227 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
231 x_bitmap_width (f
, id
)
235 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
238 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
240 x_bitmap_pixmap (f
, id
)
244 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
248 #ifdef HAVE_X_WINDOWS
250 x_bitmap_mask (f
, id
)
254 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
258 /* Allocate a new bitmap record. Returns index of new record. */
261 x_allocate_bitmap_record (f
)
264 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
267 if (dpyinfo
->bitmaps
== NULL
)
269 dpyinfo
->bitmaps_size
= 10;
271 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
272 dpyinfo
->bitmaps_last
= 1;
276 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
277 return ++dpyinfo
->bitmaps_last
;
279 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
280 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
283 dpyinfo
->bitmaps_size
*= 2;
285 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
286 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
287 return ++dpyinfo
->bitmaps_last
;
290 /* Add one reference to the reference count of the bitmap with id ID. */
293 x_reference_bitmap (f
, id
)
297 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
300 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
303 x_create_bitmap_from_data (f
, bits
, width
, height
)
306 unsigned int width
, height
;
308 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
311 #ifdef HAVE_X_WINDOWS
313 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
314 bits
, width
, height
);
317 #endif /* HAVE_X_WINDOWS */
321 bitmap
= CreateBitmap (width
, height
,
322 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
323 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
327 #endif /* HAVE_NTGUI */
330 /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */
335 id
= x_allocate_bitmap_record (f
);
337 dpyinfo
->bitmaps
[id
- 1].bitmap_data
= (char *) xmalloc (height
* width
);
338 if (! dpyinfo
->bitmaps
[id
- 1].bitmap_data
)
340 bcopy (bits
, dpyinfo
->bitmaps
[id
- 1].bitmap_data
, height
* width
);
343 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
344 dpyinfo
->bitmaps
[id
- 1].height
= height
;
345 dpyinfo
->bitmaps
[id
- 1].width
= width
;
346 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
348 #ifdef HAVE_X_WINDOWS
349 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
350 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
351 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
352 #endif /* HAVE_X_WINDOWS */
355 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
356 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
357 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
358 #endif /* HAVE_NTGUI */
363 /* Create bitmap from file FILE for frame F. */
366 x_create_bitmap_from_file (f
, file
)
371 return -1; /* MAC_TODO : bitmap support */
375 return -1; /* W32_TODO : bitmap support */
376 #endif /* HAVE_NTGUI */
378 #ifdef HAVE_X_WINDOWS
379 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
380 unsigned int width
, height
;
382 int xhot
, yhot
, result
, id
;
387 /* Look for an existing bitmap with the same name. */
388 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
390 if (dpyinfo
->bitmaps
[id
].refcount
391 && dpyinfo
->bitmaps
[id
].file
392 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
394 ++dpyinfo
->bitmaps
[id
].refcount
;
399 /* Search bitmap-file-path for the file, if appropriate. */
400 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
405 filename
= (char *) SDATA (found
);
407 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
408 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
409 if (result
!= BitmapSuccess
)
412 id
= x_allocate_bitmap_record (f
);
413 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
414 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
415 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
416 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
417 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
418 dpyinfo
->bitmaps
[id
- 1].height
= height
;
419 dpyinfo
->bitmaps
[id
- 1].width
= width
;
420 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
423 #endif /* HAVE_X_WINDOWS */
429 Free_Bitmap_Record (dpyinfo
, bm
)
430 Display_Info
*dpyinfo
;
433 #ifdef HAVE_X_WINDOWS
434 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
436 XFreePixmap (dpyinfo
->display
, bm
->mask
);
437 #endif /* HAVE_X_WINDOWS */
440 DeleteObject (bm
->pixmap
);
441 #endif /* HAVE_NTGUI */
444 xfree (bm
->bitmap_data
); /* Added ++kfs */
445 bm
->bitmap_data
= NULL
;
455 /* Remove reference to bitmap with id number ID. */
458 x_destroy_bitmap (f
, id
)
462 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
466 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
468 if (--bm
->refcount
== 0)
471 Free_Bitmap_Record (dpyinfo
, bm
);
477 /* Free all the bitmaps for the display specified by DPYINFO. */
480 x_destroy_all_bitmaps (dpyinfo
)
481 Display_Info
*dpyinfo
;
484 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
486 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
487 if (bm
->refcount
> 0)
488 Free_Bitmap_Record (dpyinfo
, bm
);
490 dpyinfo
->bitmaps_last
= 0;
494 #ifdef HAVE_X_WINDOWS
496 /* Useful functions defined in the section
497 `Image type independent image structures' below. */
499 static unsigned long four_corners_best
P_ ((XImagePtr ximg
, unsigned long width
,
500 unsigned long height
));
502 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
503 int depth
, XImagePtr
*ximg
,
506 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
509 /* Create a mask of a bitmap. Note is this not a perfect mask.
510 It's nicer with some borders in this context */
513 x_create_bitmap_mask (f
, id
)
518 XImagePtr ximg
, mask_img
;
519 unsigned long width
, height
;
522 unsigned long x
, y
, xp
, xm
, yp
, ym
;
525 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
530 pixmap
= x_bitmap_pixmap (f
, id
);
531 width
= x_bitmap_width (f
, id
);
532 height
= x_bitmap_height (f
, id
);
535 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
544 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
549 XDestroyImage (ximg
);
553 bg
= four_corners_best (ximg
, width
, height
);
555 for (y
= 0; y
< ximg
->height
; ++y
)
557 for (x
= 0; x
< ximg
->width
; ++x
)
559 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
560 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
561 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
562 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
563 if (XGetPixel (ximg
, x
, y
) == bg
564 && XGetPixel (ximg
, x
, yp
) == bg
565 && XGetPixel (ximg
, x
, ym
) == bg
566 && XGetPixel (ximg
, xp
, y
) == bg
567 && XGetPixel (ximg
, xp
, yp
) == bg
568 && XGetPixel (ximg
, xp
, ym
) == bg
569 && XGetPixel (ximg
, xm
, y
) == bg
570 && XGetPixel (ximg
, xm
, yp
) == bg
571 && XGetPixel (ximg
, xm
, ym
) == bg
)
572 XPutPixel (mask_img
, x
, y
, 0);
574 XPutPixel (mask_img
, x
, y
, 1);
578 xassert (interrupt_input_blocked
);
579 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
580 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
582 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
584 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
585 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
587 XDestroyImage (ximg
);
588 x_destroy_x_image (mask_img
);
593 #endif /* HAVE_X_WINDOWS */
596 /***********************************************************************
598 ***********************************************************************/
600 /* Value is the number of elements of vector VECTOR. */
602 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
604 /* List of supported image types. Use define_image_type to add new
605 types. Use lookup_image_type to find a type for a given symbol. */
607 static struct image_type
*image_types
;
609 /* A list of symbols, one for each supported image type. */
611 Lisp_Object Vimage_types
;
613 /* Cache for delayed-loading image types. */
615 static Lisp_Object Vimage_type_cache
;
617 /* The symbol `xbm' which is used as the type symbol for XBM images. */
623 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
624 extern Lisp_Object QCdata
, QCtype
;
625 extern Lisp_Object Qcenter
;
626 Lisp_Object QCascent
, QCmargin
, QCrelief
;
627 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
628 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
632 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
634 /* Time in seconds after which images should be removed from the cache
637 Lisp_Object Vimage_cache_eviction_delay
;
639 /* Function prototypes. */
641 static Lisp_Object define_image_type
P_ ((struct image_type
*type
, int loaded
));
642 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
643 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
644 static void x_laplace
P_ ((struct frame
*, struct image
*));
645 static void x_emboss
P_ ((struct frame
*, struct image
*));
646 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
649 #define CACHE_IMAGE_TYPE(type, status) \
650 do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0)
652 #define ADD_IMAGE_TYPE(type) \
653 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
655 /* Define a new image type from TYPE. This adds a copy of TYPE to
656 image_types and caches the loading status of TYPE. */
659 define_image_type (type
, loaded
)
660 struct image_type
*type
;
669 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
670 The initialized data segment is read-only. */
671 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
672 bcopy (type
, p
, sizeof *p
);
673 p
->next
= image_types
;
678 CACHE_IMAGE_TYPE (*type
->type
, success
);
683 /* Look up image type SYMBOL, and return a pointer to its image_type
684 structure. Value is null if SYMBOL is not a known image type. */
686 static INLINE
struct image_type
*
687 lookup_image_type (symbol
)
690 struct image_type
*type
;
692 /* We must initialize the image-type if it hasn't been already. */
693 if (NILP (Finit_image_library (symbol
, Qnil
)))
694 return 0; /* unimplemented */
696 for (type
= image_types
; type
; type
= type
->next
)
697 if (EQ (symbol
, *type
->type
))
704 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
705 valid image specification is a list whose car is the symbol
706 `image', and whose rest is a property list. The property list must
707 contain a value for key `:type'. That value must be the name of a
708 supported image type. The rest of the property list depends on the
712 valid_image_p (object
)
721 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
722 if (EQ (XCAR (tem
), QCtype
))
725 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
727 struct image_type
*type
;
728 type
= lookup_image_type (XCAR (tem
));
730 valid_p
= type
->valid_p (object
);
741 /* Log error message with format string FORMAT and argument ARG.
742 Signaling an error, e.g. when an image cannot be loaded, is not a
743 good idea because this would interrupt redisplay, and the error
744 message display would lead to another redisplay. This function
745 therefore simply displays a message. */
748 image_error (format
, arg1
, arg2
)
750 Lisp_Object arg1
, arg2
;
752 add_to_log (format
, arg1
, arg2
);
757 /***********************************************************************
759 ***********************************************************************/
761 enum image_value_type
763 IMAGE_DONT_CHECK_VALUE_TYPE
,
765 IMAGE_STRING_OR_NIL_VALUE
,
767 IMAGE_POSITIVE_INTEGER_VALUE
,
768 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
769 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
772 IMAGE_FUNCTION_VALUE
,
777 /* Structure used when parsing image specifications. */
781 /* Name of keyword. */
784 /* The type of value allowed. */
785 enum image_value_type type
;
787 /* Non-zero means key must be present. */
790 /* Used to recognize duplicate keywords in a property list. */
793 /* The value that was found. */
798 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
800 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
803 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
804 has the format (image KEYWORD VALUE ...). One of the keyword/
805 value pairs must be `:type TYPE'. KEYWORDS is a vector of
806 image_keywords structures of size NKEYWORDS describing other
807 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
810 parse_image_spec (spec
, keywords
, nkeywords
, type
)
812 struct image_keyword
*keywords
;
823 while (CONSP (plist
))
825 Lisp_Object key
, value
;
827 /* First element of a pair must be a symbol. */
829 plist
= XCDR (plist
);
833 /* There must follow a value. */
836 value
= XCAR (plist
);
837 plist
= XCDR (plist
);
839 /* Find key in KEYWORDS. Error if not found. */
840 for (i
= 0; i
< nkeywords
; ++i
)
841 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
847 /* Record that we recognized the keyword. If a keywords
848 was found more than once, it's an error. */
849 keywords
[i
].value
= value
;
852 if (keywords
[i
].count
> 1)
855 /* Check type of value against allowed type. */
856 switch (keywords
[i
].type
)
858 case IMAGE_STRING_VALUE
:
859 if (!STRINGP (value
))
863 case IMAGE_STRING_OR_NIL_VALUE
:
864 if (!STRINGP (value
) && !NILP (value
))
868 case IMAGE_SYMBOL_VALUE
:
869 if (!SYMBOLP (value
))
873 case IMAGE_POSITIVE_INTEGER_VALUE
:
874 if (!INTEGERP (value
) || XINT (value
) <= 0)
878 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
879 if (INTEGERP (value
) && XINT (value
) >= 0)
882 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
883 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
887 case IMAGE_ASCENT_VALUE
:
888 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
890 else if (INTEGERP (value
)
892 && XINT (value
) <= 100)
896 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
897 if (!INTEGERP (value
) || XINT (value
) < 0)
901 case IMAGE_DONT_CHECK_VALUE_TYPE
:
904 case IMAGE_FUNCTION_VALUE
:
905 value
= indirect_function (value
);
908 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
912 case IMAGE_NUMBER_VALUE
:
913 if (!INTEGERP (value
) && !FLOATP (value
))
917 case IMAGE_INTEGER_VALUE
:
918 if (!INTEGERP (value
))
922 case IMAGE_BOOL_VALUE
:
923 if (!NILP (value
) && !EQ (value
, Qt
))
932 if (EQ (key
, QCtype
) && !EQ (type
, value
))
936 /* Check that all mandatory fields are present. */
937 for (i
= 0; i
< nkeywords
; ++i
)
938 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
945 /* Return the value of KEY in image specification SPEC. Value is nil
946 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
947 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
950 image_spec_value (spec
, key
, found
)
951 Lisp_Object spec
, key
;
956 xassert (valid_image_p (spec
));
958 for (tail
= XCDR (spec
);
959 CONSP (tail
) && CONSP (XCDR (tail
));
960 tail
= XCDR (XCDR (tail
)))
962 if (EQ (XCAR (tail
), key
))
966 return XCAR (XCDR (tail
));
976 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
977 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
978 PIXELS non-nil means return the size in pixels, otherwise return the
979 size in canonical character units.
980 FRAME is the frame on which the image will be displayed. FRAME nil
981 or omitted means use the selected frame. */)
982 (spec
, pixels
, frame
)
983 Lisp_Object spec
, pixels
, frame
;
988 if (valid_image_p (spec
))
990 struct frame
*f
= check_x_frame (frame
);
991 int id
= lookup_image (f
, spec
);
992 struct image
*img
= IMAGE_FROM_ID (f
, id
);
993 int width
= img
->width
+ 2 * img
->hmargin
;
994 int height
= img
->height
+ 2 * img
->vmargin
;
997 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
998 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
1000 size
= Fcons (make_number (width
), make_number (height
));
1003 error ("Invalid image specification");
1009 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
1010 doc
: /* Return t if image SPEC has a mask bitmap.
1011 FRAME is the frame on which the image will be displayed. FRAME nil
1012 or omitted means use the selected frame. */)
1014 Lisp_Object spec
, frame
;
1019 if (valid_image_p (spec
))
1021 struct frame
*f
= check_x_frame (frame
);
1022 int id
= lookup_image (f
, spec
);
1023 struct image
*img
= IMAGE_FROM_ID (f
, id
);
1028 error ("Invalid image specification");
1034 /***********************************************************************
1035 Image type independent image structures
1036 ***********************************************************************/
1038 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1039 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1042 /* Allocate and return a new image structure for image specification
1043 SPEC. SPEC has a hash value of HASH. */
1045 static struct image
*
1046 make_image (spec
, hash
)
1050 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1052 xassert (valid_image_p (spec
));
1053 bzero (img
, sizeof *img
);
1054 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1055 xassert (img
->type
!= NULL
);
1057 img
->data
.lisp_val
= Qnil
;
1058 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1064 /* Free image IMG which was used on frame F, including its resources. */
1073 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1075 /* Remove IMG from the hash table of its cache. */
1077 img
->prev
->next
= img
->next
;
1079 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1082 img
->next
->prev
= img
->prev
;
1084 c
->images
[img
->id
] = NULL
;
1086 /* Free resources, then free IMG. */
1087 img
->type
->free (f
, img
);
1093 /* Prepare image IMG for display on frame F. Must be called before
1094 drawing an image. */
1097 prepare_image_for_display (f
, img
)
1103 /* We're about to display IMG, so set its timestamp to `now'. */
1105 img
->timestamp
= EMACS_SECS (t
);
1107 /* If IMG doesn't have a pixmap yet, load it now, using the image
1108 type dependent loader function. */
1109 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1110 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1114 /* Value is the number of pixels for the ascent of image IMG when
1115 drawn in face FACE. */
1118 image_ascent (img
, face
, slice
)
1121 struct glyph_slice
*slice
;
1126 if (slice
->height
== img
->height
)
1127 height
= img
->height
+ img
->vmargin
;
1128 else if (slice
->y
== 0)
1129 height
= slice
->height
+ img
->vmargin
;
1131 height
= slice
->height
;
1133 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1138 /* W32 specific version. Why?. ++kfs */
1139 ascent
= height
/ 2 - (FONT_DESCENT(face
->font
)
1140 - FONT_BASE(face
->font
)) / 2;
1142 /* This expression is arranged so that if the image can't be
1143 exactly centered, it will be moved slightly up. This is
1144 because a typical font is `top-heavy' (due to the presence
1145 uppercase letters), so the image placement should err towards
1146 being top-heavy too. It also just generally looks better. */
1147 ascent
= (height
+ face
->font
->ascent
- face
->font
->descent
+ 1) / 2;
1148 #endif /* HAVE_NTGUI */
1151 ascent
= height
/ 2;
1154 ascent
= (int) (height
* img
->ascent
/ 100.0);
1160 /* Image background colors. */
1162 /* Find the "best" corner color of a bitmap.
1163 On W32, XIMG is assumed to a device context with the bitmap selected. */
1165 static RGB_PIXEL_COLOR
1166 four_corners_best (ximg
, width
, height
)
1167 XImagePtr_or_DC ximg
;
1168 unsigned long width
, height
;
1170 RGB_PIXEL_COLOR corners
[4], best
;
1173 /* Get the colors at the corners of ximg. */
1174 corners
[0] = GET_PIXEL (ximg
, 0, 0);
1175 corners
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1176 corners
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1177 corners
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1179 /* Choose the most frequently found color as background. */
1180 for (i
= best_count
= 0; i
< 4; ++i
)
1184 for (j
= n
= 0; j
< 4; ++j
)
1185 if (corners
[i
] == corners
[j
])
1189 best
= corners
[i
], best_count
= n
;
1195 /* Portability macros */
1199 #define Destroy_Image(img_dc, prev) \
1200 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1202 #define Free_Pixmap(display, pixmap) \
1203 DeleteObject (pixmap)
1207 #define Destroy_Image(ximg, dummy) \
1208 XDestroyImage (ximg)
1210 #define Free_Pixmap(display, pixmap) \
1211 XFreePixmap (display, pixmap)
1213 #endif /* HAVE_NTGUI */
1216 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1217 it is guessed heuristically. If non-zero, XIMG is an existing
1218 XImage object (or device context with the image selected on W32) to
1219 use for the heuristic. */
1222 image_background (img
, f
, ximg
)
1225 XImagePtr_or_DC ximg
;
1227 if (! img
->background_valid
)
1228 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1230 int free_ximg
= !ximg
;
1233 #endif /* HAVE_NTGUI */
1238 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1239 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1241 HDC frame_dc
= get_frame_dc (f
);
1242 ximg
= CreateCompatibleDC (frame_dc
);
1243 release_frame_dc (f
, frame_dc
);
1244 prev
= SelectObject (ximg
, img
->pixmap
);
1245 #endif /* !HAVE_NTGUI */
1248 img
->background
= four_corners_best (ximg
, img
->width
, img
->height
);
1251 Destroy_Image (ximg
, prev
);
1253 img
->background_valid
= 1;
1256 return img
->background
;
1259 /* Return the `background_transparent' field of IMG. If IMG doesn't
1260 have one yet, it is guessed heuristically. If non-zero, MASK is an
1261 existing XImage object to use for the heuristic. */
1264 image_background_transparent (img
, f
, mask
)
1267 XImagePtr_or_DC mask
;
1269 if (! img
->background_transparent_valid
)
1270 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1274 int free_mask
= !mask
;
1277 #endif /* HAVE_NTGUI */
1282 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1283 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1285 HDC frame_dc
= get_frame_dc (f
);
1286 mask
= CreateCompatibleDC (frame_dc
);
1287 release_frame_dc (f
, frame_dc
);
1288 prev
= SelectObject (mask
, img
->mask
);
1289 #endif /* HAVE_NTGUI */
1292 img
->background_transparent
1293 = (four_corners_best (mask
, img
->width
, img
->height
) == PIX_MASK_RETAIN (f
));
1296 Destroy_Image (mask
, prev
);
1299 img
->background_transparent
= 0;
1301 img
->background_transparent_valid
= 1;
1304 return img
->background_transparent
;
1308 /***********************************************************************
1309 Helper functions for X image types
1310 ***********************************************************************/
1312 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1314 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1315 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1317 Lisp_Object color_name
,
1318 unsigned long dflt
));
1321 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1322 free the pixmap if any. MASK_P non-zero means clear the mask
1323 pixmap if any. COLORS_P non-zero means free colors allocated for
1324 the image, if any. */
1327 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1330 int pixmap_p
, mask_p
, colors_p
;
1332 if (pixmap_p
&& img
->pixmap
)
1334 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1335 img
->pixmap
= NO_PIXMAP
;
1336 img
->background_valid
= 0;
1339 if (mask_p
&& img
->mask
)
1341 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1342 img
->mask
= NO_PIXMAP
;
1343 img
->background_transparent_valid
= 0;
1346 if (colors_p
&& img
->ncolors
)
1348 /* MAC_TODO: color table support. */
1349 /* W32_TODO: color table support. */
1350 #ifdef HAVE_X_WINDOWS
1351 x_free_colors (f
, img
->colors
, img
->ncolors
);
1352 #endif /* HAVE_X_WINDOWS */
1353 xfree (img
->colors
);
1359 /* Free X resources of image IMG which is used on frame F. */
1362 x_clear_image (f
, img
)
1367 x_clear_image_1 (f
, img
, 1, 1, 1);
1372 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1373 cannot be allocated, use DFLT. Add a newly allocated color to
1374 IMG->colors, so that it can be freed again. Value is the pixel
1377 static unsigned long
1378 x_alloc_image_color (f
, img
, color_name
, dflt
)
1381 Lisp_Object color_name
;
1385 unsigned long result
;
1387 xassert (STRINGP (color_name
));
1389 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1391 /* This isn't called frequently so we get away with simply
1392 reallocating the color vector to the needed size, here. */
1395 (unsigned long *) xrealloc (img
->colors
,
1396 img
->ncolors
* sizeof *img
->colors
);
1397 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1398 result
= color
.pixel
;
1408 /***********************************************************************
1410 ***********************************************************************/
1412 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1413 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1415 /* Return a new, initialized image cache that is allocated from the
1416 heap. Call free_image_cache to free an image cache. */
1418 struct image_cache
*
1421 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1424 bzero (c
, sizeof *c
);
1426 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1427 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1428 c
->buckets
= (struct image
**) xmalloc (size
);
1429 bzero (c
->buckets
, size
);
1434 /* Free image cache of frame F. Be aware that X frames share images
1438 free_image_cache (f
)
1441 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1446 /* Cache should not be referenced by any frame when freed. */
1447 xassert (c
->refcount
== 0);
1449 for (i
= 0; i
< c
->used
; ++i
)
1450 free_image (f
, c
->images
[i
]);
1454 FRAME_X_IMAGE_CACHE (f
) = NULL
;
1459 /* Clear image cache of frame F. FORCE_P non-zero means free all
1460 images. FORCE_P zero means clear only images that haven't been
1461 displayed for some time. Should be called from time to time to
1462 reduce the number of loaded images. If image-eviction-seconds is
1463 non-nil, this frees images in the cache which weren't displayed for
1464 at least that many seconds. */
1467 clear_image_cache (f
, force_p
)
1471 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1473 if (c
&& INTEGERP (Vimage_cache_eviction_delay
))
1480 old
= EMACS_SECS (t
) - XFASTINT (Vimage_cache_eviction_delay
);
1482 /* Block input so that we won't be interrupted by a SIGIO
1483 while being in an inconsistent state. */
1486 for (i
= nfreed
= 0; i
< c
->used
; ++i
)
1488 struct image
*img
= c
->images
[i
];
1490 && (force_p
|| img
->timestamp
< old
))
1492 free_image (f
, img
);
1497 /* We may be clearing the image cache because, for example,
1498 Emacs was iconified for a longer period of time. In that
1499 case, current matrices may still contain references to
1500 images freed above. So, clear these matrices. */
1503 Lisp_Object tail
, frame
;
1505 FOR_EACH_FRAME (tail
, frame
)
1507 struct frame
*f
= XFRAME (frame
);
1508 if (FRAME_WINDOW_P (f
)
1509 && FRAME_X_IMAGE_CACHE (f
) == c
)
1510 clear_current_matrices (f
);
1513 ++windows_or_buffers_changed
;
1521 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1523 doc
: /* Clear the image cache of FRAME.
1524 FRAME nil or omitted means use the selected frame.
1525 FRAME t means clear the image caches of all frames. */)
1533 FOR_EACH_FRAME (tail
, frame
)
1534 if (FRAME_WINDOW_P (XFRAME (frame
)))
1535 clear_image_cache (XFRAME (frame
), 1);
1538 clear_image_cache (check_x_frame (frame
), 1);
1544 /* Compute masks and transform image IMG on frame F, as specified
1545 by the image's specification, */
1548 postprocess_image (f
, img
)
1552 /* Manipulation of the image's mask. */
1555 Lisp_Object conversion
, spec
;
1560 /* `:heuristic-mask t'
1562 means build a mask heuristically.
1563 `:heuristic-mask (R G B)'
1564 `:mask (heuristic (R G B))'
1565 means build a mask from color (R G B) in the
1568 means remove a mask, if any. */
1570 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1572 x_build_heuristic_mask (f
, img
, mask
);
1577 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1579 if (EQ (mask
, Qheuristic
))
1580 x_build_heuristic_mask (f
, img
, Qt
);
1581 else if (CONSP (mask
)
1582 && EQ (XCAR (mask
), Qheuristic
))
1584 if (CONSP (XCDR (mask
)))
1585 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1587 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1589 else if (NILP (mask
) && found_p
&& img
->mask
)
1591 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1592 img
->mask
= NO_PIXMAP
;
1597 /* Should we apply an image transformation algorithm? */
1598 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1599 if (EQ (conversion
, Qdisabled
))
1600 x_disable_image (f
, img
);
1601 else if (EQ (conversion
, Qlaplace
))
1603 else if (EQ (conversion
, Qemboss
))
1605 else if (CONSP (conversion
)
1606 && EQ (XCAR (conversion
), Qedge_detection
))
1609 tem
= XCDR (conversion
);
1611 x_edge_detection (f
, img
,
1612 Fplist_get (tem
, QCmatrix
),
1613 Fplist_get (tem
, QCcolor_adjustment
));
1619 /* Return the id of image with Lisp specification SPEC on frame F.
1620 SPEC must be a valid Lisp image specification (see valid_image_p). */
1623 lookup_image (f
, spec
)
1627 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1629 /* Work around a problem with MinGW builds of graphics libraries
1630 not honoring calling conventions. */
1636 struct gcpro gcpro1
;
1639 /* F must be a window-system frame, and SPEC must be a valid image
1641 xassert (FRAME_WINDOW_P (f
));
1642 xassert (valid_image_p (spec
));
1646 /* Look up SPEC in the hash table of the image cache. */
1647 hash
= sxhash (spec
, 0);
1648 i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1650 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1651 if (img
->hash
== hash
&& !NILP (Fequal (img
->spec
, spec
)))
1654 /* If not found, create a new image and cache it. */
1657 extern Lisp_Object Qpostscript
;
1660 img
= make_image (spec
, hash
);
1661 cache_image (f
, img
);
1662 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1664 /* If we can't load the image, and we don't have a width and
1665 height, use some arbitrary width and height so that we can
1666 draw a rectangle for it. */
1667 if (img
->load_failed_p
)
1671 value
= image_spec_value (spec
, QCwidth
, NULL
);
1672 img
->width
= (INTEGERP (value
)
1673 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1674 value
= image_spec_value (spec
, QCheight
, NULL
);
1675 img
->height
= (INTEGERP (value
)
1676 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1680 /* Handle image type independent image attributes
1681 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1682 `:background COLOR'. */
1683 Lisp_Object ascent
, margin
, relief
, bg
;
1685 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1686 if (INTEGERP (ascent
))
1687 img
->ascent
= XFASTINT (ascent
);
1688 else if (EQ (ascent
, Qcenter
))
1689 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1691 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1692 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1693 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1694 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1695 && INTEGERP (XCDR (margin
)))
1697 if (XINT (XCAR (margin
)) > 0)
1698 img
->hmargin
= XFASTINT (XCAR (margin
));
1699 if (XINT (XCDR (margin
)) > 0)
1700 img
->vmargin
= XFASTINT (XCDR (margin
));
1703 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1704 if (INTEGERP (relief
))
1706 img
->relief
= XINT (relief
);
1707 img
->hmargin
+= abs (img
->relief
);
1708 img
->vmargin
+= abs (img
->relief
);
1711 if (! img
->background_valid
)
1713 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1717 = x_alloc_image_color (f
, img
, bg
,
1718 FRAME_BACKGROUND_PIXEL (f
));
1719 img
->background_valid
= 1;
1723 /* Do image transformations and compute masks, unless we
1724 don't have the image yet. */
1725 if (!EQ (*img
->type
->type
, Qpostscript
))
1726 postprocess_image (f
, img
);
1732 /* We're using IMG, so set its timestamp to `now'. */
1733 EMACS_GET_TIME (now
);
1734 img
->timestamp
= EMACS_SECS (now
);
1738 /* Value is the image id. */
1743 /* Cache image IMG in the image cache of frame F. */
1746 cache_image (f
, img
)
1750 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1753 /* Find a free slot in c->images. */
1754 for (i
= 0; i
< c
->used
; ++i
)
1755 if (c
->images
[i
] == NULL
)
1758 /* If no free slot found, maybe enlarge c->images. */
1759 if (i
== c
->used
&& c
->used
== c
->size
)
1762 c
->images
= (struct image
**) xrealloc (c
->images
,
1763 c
->size
* sizeof *c
->images
);
1766 /* Add IMG to c->images, and assign IMG an id. */
1772 /* Add IMG to the cache's hash table. */
1773 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1774 img
->next
= c
->buckets
[i
];
1776 img
->next
->prev
= img
;
1778 c
->buckets
[i
] = img
;
1782 /* Call FN on every image in the image cache of frame F. Used to mark
1783 Lisp Objects in the image cache. */
1786 forall_images_in_image_cache (f
, fn
)
1788 void (*fn
) P_ ((struct image
*img
));
1790 if (FRAME_LIVE_P (f
) && FRAME_WINDOW_P (f
))
1792 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1796 for (i
= 0; i
< c
->used
; ++i
)
1805 /***********************************************************************
1806 X / MAC / W32 support code
1807 ***********************************************************************/
1811 /* Macro for defining functions that will be loaded from image DLLs. */
1812 #define DEF_IMGLIB_FN(func) FARPROC fn_##func
1814 /* Macro for loading those image functions from the library. */
1815 #define LOAD_IMGLIB_FN(lib,func) { \
1816 fn_##func = (void *) GetProcAddress (lib, #func); \
1817 if (!fn_##func) return 0; \
1820 /* Load a DLL implementing an image type.
1821 The `image-library-alist' variable associates a symbol,
1822 identifying an image type, to a list of possible filenames.
1823 The function returns NULL if no library could be loaded for
1824 the given image type, or if the library was previously loaded;
1825 else the handle of the DLL. */
1827 w32_delayed_load (Lisp_Object libraries
, Lisp_Object type
)
1829 HMODULE library
= NULL
;
1831 if (CONSP (libraries
) && NILP (Fassq (type
, Vimage_type_cache
)))
1833 Lisp_Object dlls
= Fassq (type
, libraries
);
1836 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
1838 CHECK_STRING_CAR (dlls
);
1839 if (library
= LoadLibrary (SDATA (XCAR (dlls
))))
1847 #endif /* HAVE_NTGUI */
1849 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
1850 XImagePtr
*, Pixmap
*));
1851 static void x_destroy_x_image
P_ ((XImagePtr
));
1852 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
1855 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1856 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1857 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1858 via xmalloc. Print error messages via image_error if an error
1859 occurs. Value is non-zero if successful.
1861 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1862 should indicate the bit depth of the image. */
1865 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
1867 int width
, height
, depth
;
1871 #ifdef HAVE_X_WINDOWS
1872 Display
*display
= FRAME_X_DISPLAY (f
);
1873 Window window
= FRAME_X_WINDOW (f
);
1874 Screen
*screen
= FRAME_X_SCREEN (f
);
1876 xassert (interrupt_input_blocked
);
1879 depth
= DefaultDepthOfScreen (screen
);
1880 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1881 depth
, ZPixmap
, 0, NULL
, width
, height
,
1882 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1885 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1889 /* Allocate image raster. */
1890 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1892 /* Allocate a pixmap of the same size. */
1893 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1894 if (*pixmap
== NO_PIXMAP
)
1896 x_destroy_x_image (*ximg
);
1898 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1903 #endif /* HAVE_X_WINDOWS */
1907 BITMAPINFOHEADER
*header
;
1909 int scanline_width_bits
;
1911 int palette_colors
= 0;
1916 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1917 && depth
!= 16 && depth
!= 24 && depth
!= 32)
1919 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
1923 scanline_width_bits
= width
* depth
;
1924 remainder
= scanline_width_bits
% 32;
1927 scanline_width_bits
+= 32 - remainder
;
1929 /* Bitmaps with a depth less than 16 need a palette. */
1930 /* BITMAPINFO structure already contains the first RGBQUAD. */
1932 palette_colors
= 1 << depth
- 1;
1934 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
1937 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
1941 header
= &((*ximg
)->info
.bmiHeader
);
1942 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
1943 header
->biSize
= sizeof (*header
);
1944 header
->biWidth
= width
;
1945 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
1946 header
->biPlanes
= 1;
1947 header
->biBitCount
= depth
;
1948 header
->biCompression
= BI_RGB
;
1949 header
->biClrUsed
= palette_colors
;
1951 /* TODO: fill in palette. */
1954 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
1955 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
1956 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
1957 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
1958 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
1959 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
1960 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
1961 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
1964 hdc
= get_frame_dc (f
);
1966 /* Create a DIBSection and raster array for the bitmap,
1967 and store its handle in *pixmap. */
1968 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
1969 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
1970 &((*ximg
)->data
), NULL
, 0);
1972 /* Realize display palette and garbage all frames. */
1973 release_frame_dc (f
, hdc
);
1975 if (*pixmap
== NULL
)
1977 DWORD err
= GetLastError();
1978 Lisp_Object errcode
;
1979 /* All system errors are < 10000, so the following is safe. */
1980 XSETINT (errcode
, (int) err
);
1981 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
1982 x_destroy_x_image (*ximg
);
1988 #endif /* HAVE_NTGUI */
1991 Display
*display
= FRAME_X_DISPLAY (f
);
1992 Window window
= FRAME_X_WINDOW (f
);
1994 xassert (interrupt_input_blocked
);
1996 /* Allocate a pixmap of the same size. */
1997 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1998 if (*pixmap
== NO_PIXMAP
)
2000 x_destroy_x_image (*ximg
);
2002 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
2006 LockPixels (GetGWorldPixMap (*pixmap
));
2014 /* Destroy XImage XIMG. Free XIMG->data. */
2017 x_destroy_x_image (ximg
)
2020 xassert (interrupt_input_blocked
);
2023 #ifdef HAVE_X_WINDOWS
2026 XDestroyImage (ximg
);
2027 #endif /* HAVE_X_WINDOWS */
2029 /* Data will be freed by DestroyObject. */
2032 #endif /* HAVE_NTGUI */
2034 XDestroyImage (ximg
);
2040 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2041 are width and height of both the image and pixmap. */
2044 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
2050 #ifdef HAVE_X_WINDOWS
2053 xassert (interrupt_input_blocked
);
2054 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2055 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2056 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2057 #endif /* HAVE_X_WINDOWS */
2060 #if 0 /* I don't think this is necessary looking at where it is used. */
2061 HDC hdc
= get_frame_dc (f
);
2062 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2063 release_frame_dc (f
, hdc
);
2065 #endif /* HAVE_NTGUI */
2068 xassert (ximg
== pixmap
);
2073 /***********************************************************************
2075 ***********************************************************************/
2077 static unsigned char *slurp_file
P_ ((char *, int *));
2080 /* Find image file FILE. Look in data-directory, then
2081 x-bitmap-file-path. Value is the full name of the file found, or
2082 nil if not found. */
2085 x_find_image_file (file
)
2088 Lisp_Object file_found
, search_path
;
2089 struct gcpro gcpro1
, gcpro2
;
2093 search_path
= Fcons (Vdata_directory
, Vx_bitmap_file_path
);
2094 GCPRO2 (file_found
, search_path
);
2096 /* Try to find FILE in data-directory, then x-bitmap-file-path. */
2097 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2109 /* Read FILE into memory. Value is a pointer to a buffer allocated
2110 with xmalloc holding FILE's contents. Value is null if an error
2111 occurred. *SIZE is set to the size of the file. */
2113 static unsigned char *
2114 slurp_file (file
, size
)
2119 unsigned char *buf
= NULL
;
2122 if (stat (file
, &st
) == 0
2123 && (fp
= fopen (file
, "rb")) != NULL
2124 && (buf
= (char *) xmalloc (st
.st_size
),
2125 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2148 /***********************************************************************
2149 MAC Image Load Functions
2150 ***********************************************************************/
2152 static int image_load_quicktime
P_ ((struct frame
*, struct image
*img
,
2155 static int image_load_quartz2d
P_ ((struct frame
*, struct image
*img
, int));
2159 find_image_fsspec (specified_file
, file
, fss
)
2160 Lisp_Object specified_file
, *file
;
2163 #if TARGET_API_MAC_CARBON
2166 Str255 mac_pathname
;
2170 *file
= x_find_image_file (specified_file
);
2171 if (!STRINGP (*file
))
2172 return fnfErr
; /* file or directory not found;
2173 incomplete pathname */
2174 /* Try to open the image file. */
2175 #if TARGET_API_MAC_CARBON
2176 err
= FSPathMakeRef (SDATA (*file
), &fsr
, NULL
);
2178 err
= FSGetCatalogInfo (&fsr
, kFSCatInfoNone
, NULL
, NULL
, fss
, NULL
);
2180 if (posix_to_mac_pathname (SDATA (*file
), mac_pathname
, MAXPATHLEN
+1) == 0)
2182 c2pstr (mac_pathname
);
2183 err
= FSMakeFSSpec (0, 0, mac_pathname
, fss
);
2189 image_load_qt_1 (f
, img
, type
, fss
, dh
)
2197 GraphicsImportComponent gi
;
2200 short draw_all_pixels
;
2201 Lisp_Object specified_bg
;
2206 err
= OpenADefaultComponent (GraphicsImporterComponentType
,
2210 image_error ("Cannot get importer component for `%s'", img
->spec
, Qnil
);
2215 /* read from file system spec */
2216 err
= GraphicsImportSetDataFile (gi
, fss
);
2219 image_error ("Cannot set fsspec to graphics importer for '%s'",
2226 /* read from data handle */
2227 err
= GraphicsImportSetDataHandle (gi
, dh
);
2230 image_error ("Cannot set data handle to graphics importer for `%s'",
2235 err
= GraphicsImportGetNaturalBounds (gi
, &rect
);
2238 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2241 width
= img
->width
= rect
.right
- rect
.left
;
2242 height
= img
->height
= rect
.bottom
- rect
.top
;
2243 err
= GraphicsImportDoesDrawAllPixels (gi
, &draw_all_pixels
);
2245 /* Don't check the error code here. It may have an undocumented
2249 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2253 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2255 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2256 if (!STRINGP (specified_bg
) ||
2257 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2259 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2260 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2261 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2262 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2266 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2268 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2273 GetGWorld (&old_port
, &old_gdh
);
2274 SetGWorld (ximg
, NULL
);
2275 bg_color
.red
= color
.red
;
2276 bg_color
.green
= color
.green
;
2277 bg_color
.blue
= color
.blue
;
2278 RGBBackColor (&bg_color
);
2279 #if TARGET_API_MAC_CARBON
2280 GetPortBounds (ximg
, &rect
);
2283 EraseRect (&(ximg
->portRect
));
2285 SetGWorld (old_port
, old_gdh
);
2287 GraphicsImportSetGWorld (gi
, ximg
, NULL
);
2288 GraphicsImportDraw (gi
);
2289 CloseComponent (gi
);
2291 /* Maybe fill in the background field while we have ximg handy. */
2292 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2293 IMAGE_BACKGROUND (img
, f
, ximg
);
2295 /* Put the image into the pixmap. */
2296 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2297 x_destroy_x_image (ximg
);
2301 CloseComponent (gi
);
2306 /* Load an image using the QuickTime Graphics Importer.
2307 Note: The alpha channel does not work for PNG images. */
2309 image_load_quicktime (f
, img
, type
)
2314 Lisp_Object specified_file
;
2315 Lisp_Object specified_data
;
2318 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2319 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2321 if (NILP (specified_data
))
2323 /* Read from a file */
2327 err
= find_image_fsspec (specified_file
, &file
, &fss
);
2331 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2333 image_error ("Cannot open `%s'", file
, Qnil
);
2336 return image_load_qt_1 (f
, img
, type
, &fss
, NULL
);
2340 /* Memory source! */
2344 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
2347 image_error ("Cannot allocate data handle for `%s'",
2351 success_p
= image_load_qt_1 (f
, img
, type
, NULL
, dh
);
2359 /* Load a PNG/JPEG image using Quartz 2D decoding routines.
2360 CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2.
2361 So don't use this function directly but determine at runtime
2362 whether it exists. */
2363 typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType
)
2364 (CGDataProviderRef
, const float [], bool, CGColorRenderingIntent
);
2365 static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider
;
2369 init_image_func_pointer ()
2371 if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider"))
2373 MyCGImageCreateWithPNGDataProvider
2374 = (CGImageCreateWithPNGDataProviderProcType
)
2375 NSAddressOfSymbol (NSLookupAndBindSymbol
2376 ("_CGImageCreateWithPNGDataProvider"));
2379 MyCGImageCreateWithPNGDataProvider
= NULL
;
2384 image_load_quartz2d (f
, img
, png_p
)
2389 Lisp_Object file
, specified_file
;
2390 Lisp_Object specified_data
, specified_bg
;
2391 struct gcpro gcpro1
;
2392 CGDataProviderRef source
;
2396 XImagePtr ximg
= NULL
;
2397 CGContextRef context
;
2400 /* Open the file. */
2401 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2402 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2407 if (NILP (specified_data
))
2412 file
= x_find_image_file (specified_file
);
2413 if (!STRINGP (file
))
2415 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2419 path
= CFStringCreateWithCString (NULL
, SDATA (file
),
2420 kCFStringEncodingUTF8
);
2421 url
= CFURLCreateWithFileSystemPath (NULL
, path
,
2422 kCFURLPOSIXPathStyle
, 0);
2424 source
= CGDataProviderCreateWithURL (url
);
2428 source
= CGDataProviderCreateWithData (NULL
, SDATA (specified_data
),
2429 SBYTES (specified_data
), NULL
);
2432 image
= (*MyCGImageCreateWithPNGDataProvider
) (source
, NULL
, FALSE
,
2433 kCGRenderingIntentDefault
);
2435 image
= CGImageCreateWithJPEGDataProvider (source
, NULL
, FALSE
,
2436 kCGRenderingIntentDefault
);
2438 CGDataProviderRelease (source
);
2442 image_error ("Error reading image `%s'", img
->spec
, Qnil
);
2448 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2449 if (!STRINGP (specified_bg
) ||
2450 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2452 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2453 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2454 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2455 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2458 width
= img
->width
= CGImageGetWidth (image
);
2459 height
= img
->height
= CGImageGetHeight (image
);
2460 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2462 CGImageRelease (image
);
2466 rectangle
= CGRectMake (0, 0, width
, height
);
2467 QDBeginCGContext (ximg
, &context
);
2470 CGContextSetRGBFillColor (context
, color
.red
/ 65535.0,
2471 color
.green
/ 65535.0,
2472 color
.blue
/ 65535.0, 1.0);
2473 CGContextFillRect (context
, rectangle
);
2475 CGContextDrawImage (context
, rectangle
, image
);
2476 QDEndCGContext (ximg
, &context
);
2477 CGImageRelease (image
);
2479 /* Maybe fill in the background field while we have ximg handy. */
2480 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2481 IMAGE_BACKGROUND (img
, f
, ximg
);
2483 /* Put the image into the pixmap. */
2484 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2485 x_destroy_x_image (ximg
);
2494 /***********************************************************************
2496 ***********************************************************************/
2498 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2499 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2500 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2501 unsigned char *, unsigned char *));
2502 static int xbm_image_p
P_ ((Lisp_Object object
));
2503 static int xbm_read_bitmap_data
P_ ((unsigned char *, unsigned char *,
2504 int *, int *, unsigned char **));
2505 static int xbm_file_p
P_ ((Lisp_Object
));
2508 /* Indices of image specification fields in xbm_format, below. */
2510 enum xbm_keyword_index
2528 /* Vector of image_keyword structures describing the format
2529 of valid XBM image specifications. */
2531 static struct image_keyword xbm_format
[XBM_LAST
] =
2533 {":type", IMAGE_SYMBOL_VALUE
, 1},
2534 {":file", IMAGE_STRING_VALUE
, 0},
2535 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2536 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2537 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2538 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2539 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2540 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2541 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2542 {":relief", IMAGE_INTEGER_VALUE
, 0},
2543 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2544 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2545 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2548 /* Structure describing the image type XBM. */
2550 static struct image_type xbm_type
=
2559 /* Tokens returned from xbm_scan. */
2568 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2569 A valid specification is a list starting with the symbol `image'
2570 The rest of the list is a property list which must contain an
2573 If the specification specifies a file to load, it must contain
2574 an entry `:file FILENAME' where FILENAME is a string.
2576 If the specification is for a bitmap loaded from memory it must
2577 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2578 WIDTH and HEIGHT are integers > 0. DATA may be:
2580 1. a string large enough to hold the bitmap data, i.e. it must
2581 have a size >= (WIDTH + 7) / 8 * HEIGHT
2583 2. a bool-vector of size >= WIDTH * HEIGHT
2585 3. a vector of strings or bool-vectors, one for each line of the
2588 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
2589 may not be specified in this case because they are defined in the
2592 Both the file and data forms may contain the additional entries
2593 `:background COLOR' and `:foreground COLOR'. If not present,
2594 foreground and background of the frame on which the image is
2595 displayed is used. */
2598 xbm_image_p (object
)
2601 struct image_keyword kw
[XBM_LAST
];
2603 bcopy (xbm_format
, kw
, sizeof kw
);
2604 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2607 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2609 if (kw
[XBM_FILE
].count
)
2611 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2614 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2616 /* In-memory XBM file. */
2617 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2625 /* Entries for `:width', `:height' and `:data' must be present. */
2626 if (!kw
[XBM_WIDTH
].count
2627 || !kw
[XBM_HEIGHT
].count
2628 || !kw
[XBM_DATA
].count
)
2631 data
= kw
[XBM_DATA
].value
;
2632 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2633 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2635 /* Check type of data, and width and height against contents of
2641 /* Number of elements of the vector must be >= height. */
2642 if (XVECTOR (data
)->size
< height
)
2645 /* Each string or bool-vector in data must be large enough
2646 for one line of the image. */
2647 for (i
= 0; i
< height
; ++i
)
2649 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2654 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2657 else if (BOOL_VECTOR_P (elt
))
2659 if (XBOOL_VECTOR (elt
)->size
< width
)
2666 else if (STRINGP (data
))
2669 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2672 else if (BOOL_VECTOR_P (data
))
2674 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2685 /* Scan a bitmap file. FP is the stream to read from. Value is
2686 either an enumerator from enum xbm_token, or a character for a
2687 single-character token, or 0 at end of file. If scanning an
2688 identifier, store the lexeme of the identifier in SVAL. If
2689 scanning a number, store its value in *IVAL. */
2692 xbm_scan (s
, end
, sval
, ival
)
2693 unsigned char **s
, *end
;
2701 /* Skip white space. */
2702 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2707 else if (isdigit (c
))
2709 int value
= 0, digit
;
2711 if (c
== '0' && *s
< end
)
2714 if (c
== 'x' || c
== 'X')
2721 else if (c
>= 'a' && c
<= 'f')
2722 digit
= c
- 'a' + 10;
2723 else if (c
>= 'A' && c
<= 'F')
2724 digit
= c
- 'A' + 10;
2727 value
= 16 * value
+ digit
;
2730 else if (isdigit (c
))
2734 && (c
= *(*s
)++, isdigit (c
)))
2735 value
= 8 * value
+ c
- '0';
2742 && (c
= *(*s
)++, isdigit (c
)))
2743 value
= 10 * value
+ c
- '0';
2751 else if (isalpha (c
) || c
== '_')
2755 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2762 else if (c
== '/' && **s
== '*')
2764 /* C-style comment. */
2766 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2780 /* Create a Windows bitmap from X bitmap data. */
2782 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2784 static unsigned char swap_nibble
[16]
2785 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2786 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2787 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2788 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2790 unsigned char *bits
, *p
;
2793 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2794 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2795 bits
= (unsigned char *) alloca (height
* w2
);
2796 bzero (bits
, height
* w2
);
2797 for (i
= 0; i
< height
; i
++)
2800 for (j
= 0; j
< w1
; j
++)
2802 /* Bitswap XBM bytes to match how Windows does things. */
2803 unsigned char c
= *data
++;
2804 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2805 | (swap_nibble
[(c
>>4) & 0xf]));
2808 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2813 static void convert_mono_to_color_image (f
, img
, foreground
, background
)
2816 COLORREF foreground
, background
;
2818 HDC hdc
, old_img_dc
, new_img_dc
;
2819 HGDIOBJ old_prev
, new_prev
;
2822 hdc
= get_frame_dc (f
);
2823 old_img_dc
= CreateCompatibleDC (hdc
);
2824 new_img_dc
= CreateCompatibleDC (hdc
);
2825 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2826 release_frame_dc (f
, hdc
);
2827 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2828 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2829 SetTextColor (new_img_dc
, foreground
);
2830 SetBkColor (new_img_dc
, background
);
2832 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2835 SelectObject (old_img_dc
, old_prev
);
2836 SelectObject (new_img_dc
, new_prev
);
2837 DeleteDC (old_img_dc
);
2838 DeleteDC (new_img_dc
);
2839 DeleteObject (img
->pixmap
);
2840 if (new_pixmap
== 0)
2841 fprintf (stderr
, "Failed to convert image to color.\n");
2843 img
->pixmap
= new_pixmap
;
2846 #define XBM_BIT_SHUFFLE(b) (~(b))
2850 #define XBM_BIT_SHUFFLE(b) (b)
2852 #endif /* HAVE_NTGUI */
2856 Create_Pixmap_From_Bitmap_Data(f
, img
, data
, fg
, bg
, non_default_colors
)
2860 RGB_PIXEL_COLOR fg
, bg
;
2861 int non_default_colors
;
2865 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2867 /* If colors were specified, transfer the bitmap to a color one. */
2868 if (non_default_colors
)
2869 convert_mono_to_color_image (f
, img
, fg
, bg
);
2872 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2875 img
->width
, img
->height
,
2877 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2878 #endif /* HAVE_NTGUI */
2883 /* Replacement for XReadBitmapFileData which isn't available under old
2884 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2885 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2886 the image. Return in *DATA the bitmap data allocated with xmalloc.
2887 Value is non-zero if successful. DATA null means just test if
2888 CONTENTS looks like an in-memory XBM file. */
2891 xbm_read_bitmap_data (contents
, end
, width
, height
, data
)
2892 unsigned char *contents
, *end
;
2893 int *width
, *height
;
2894 unsigned char **data
;
2896 unsigned char *s
= contents
;
2897 char buffer
[BUFSIZ
];
2900 int bytes_per_line
, i
, nbytes
;
2906 LA1 = xbm_scan (&s, end, buffer, &value)
2908 #define expect(TOKEN) \
2909 if (LA1 != (TOKEN)) \
2914 #define expect_ident(IDENT) \
2915 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2920 *width
= *height
= -1;
2923 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2925 /* Parse defines for width, height and hot-spots. */
2929 expect_ident ("define");
2930 expect (XBM_TK_IDENT
);
2932 if (LA1
== XBM_TK_NUMBER
);
2934 char *p
= strrchr (buffer
, '_');
2935 p
= p
? p
+ 1 : buffer
;
2936 if (strcmp (p
, "width") == 0)
2938 else if (strcmp (p
, "height") == 0)
2941 expect (XBM_TK_NUMBER
);
2944 if (*width
< 0 || *height
< 0)
2946 else if (data
== NULL
)
2949 /* Parse bits. Must start with `static'. */
2950 expect_ident ("static");
2951 if (LA1
== XBM_TK_IDENT
)
2953 if (strcmp (buffer
, "unsigned") == 0)
2956 expect_ident ("char");
2958 else if (strcmp (buffer
, "short") == 0)
2962 if (*width
% 16 && *width
% 16 < 9)
2965 else if (strcmp (buffer
, "char") == 0)
2973 expect (XBM_TK_IDENT
);
2979 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2980 nbytes
= bytes_per_line
* *height
;
2981 p
= *data
= (char *) xmalloc (nbytes
);
2985 for (i
= 0; i
< nbytes
; i
+= 2)
2988 expect (XBM_TK_NUMBER
);
2990 *p
++ = XBM_BIT_SHUFFLE (val
);
2991 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2992 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2994 if (LA1
== ',' || LA1
== '}')
3002 for (i
= 0; i
< nbytes
; ++i
)
3005 expect (XBM_TK_NUMBER
);
3007 *p
++ = XBM_BIT_SHUFFLE (val
);
3009 if (LA1
== ',' || LA1
== '}')
3034 /* Load XBM image IMG which will be displayed on frame F from buffer
3035 CONTENTS. END is the end of the buffer. Value is non-zero if
3039 xbm_load_image (f
, img
, contents
, end
)
3042 unsigned char *contents
, *end
;
3045 unsigned char *data
;
3048 rc
= xbm_read_bitmap_data (contents
, end
, &img
->width
, &img
->height
, &data
);
3051 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3052 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3053 int non_default_colors
= 0;
3056 xassert (img
->width
> 0 && img
->height
> 0);
3058 /* Get foreground and background colors, maybe allocate colors. */
3059 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
3062 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
3063 non_default_colors
= 1;
3065 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
3068 background
= x_alloc_image_color (f
, img
, value
, background
);
3069 img
->background
= background
;
3070 img
->background_valid
= 1;
3071 non_default_colors
= 1;
3074 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
3075 foreground
, background
,
3076 non_default_colors
);
3079 if (img
->pixmap
== NO_PIXMAP
)
3081 x_clear_image (f
, img
);
3082 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
3088 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3094 /* Value is non-zero if DATA looks like an in-memory XBM file. */
3101 return (STRINGP (data
)
3102 && xbm_read_bitmap_data (SDATA (data
),
3109 /* Fill image IMG which is used on frame F with pixmap data. Value is
3110 non-zero if successful. */
3118 Lisp_Object file_name
;
3120 xassert (xbm_image_p (img
->spec
));
3122 /* If IMG->spec specifies a file name, create a non-file spec from it. */
3123 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
3124 if (STRINGP (file_name
))
3127 unsigned char *contents
;
3129 struct gcpro gcpro1
;
3131 file
= x_find_image_file (file_name
);
3133 if (!STRINGP (file
))
3135 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
3140 contents
= slurp_file (SDATA (file
), &size
);
3141 if (contents
== NULL
)
3143 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3148 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3153 struct image_keyword fmt
[XBM_LAST
];
3155 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3156 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3157 int non_default_colors
= 0;
3160 int in_memory_file_p
= 0;
3162 /* See if data looks like an in-memory XBM file. */
3163 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3164 in_memory_file_p
= xbm_file_p (data
);
3166 /* Parse the image specification. */
3167 bcopy (xbm_format
, fmt
, sizeof fmt
);
3168 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3171 /* Get specified width, and height. */
3172 if (!in_memory_file_p
)
3174 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3175 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3176 xassert (img
->width
> 0 && img
->height
> 0);
3179 /* Get foreground and background colors, maybe allocate colors. */
3180 if (fmt
[XBM_FOREGROUND
].count
3181 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3183 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3185 non_default_colors
= 1;
3188 if (fmt
[XBM_BACKGROUND
].count
3189 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3191 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3193 non_default_colors
= 1;
3196 if (in_memory_file_p
)
3197 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3206 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3208 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3209 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3211 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3213 bcopy (SDATA (line
), p
, nbytes
);
3215 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3218 else if (STRINGP (data
))
3219 bits
= SDATA (data
);
3221 bits
= XBOOL_VECTOR (data
)->data
;
3223 /* Create the pixmap. */
3225 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3226 foreground
, background
,
3227 non_default_colors
);
3232 image_error ("Unable to create pixmap for XBM image `%s'",
3234 x_clear_image (f
, img
);
3244 /***********************************************************************
3246 ***********************************************************************/
3248 #if defined (HAVE_XPM) || defined (MAC_OS)
3250 static int xpm_image_p
P_ ((Lisp_Object object
));
3251 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3252 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3254 #endif /* HAVE_XPM || MAC_OS */
3258 /* Indicate to xpm.h that we don't have Xlib. */
3260 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3261 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
3262 #define XColor xpm_XColor
3263 #define XImage xpm_XImage
3264 #define Display xpm_Display
3265 #define PIXEL_ALREADY_TYPEDEFED
3266 #include "X11/xpm.h"
3271 #undef PIXEL_ALREADY_TYPEDEFED
3273 #include "X11/xpm.h"
3274 #endif /* HAVE_NTGUI */
3275 #endif /* HAVE_XPM */
3277 #if defined (HAVE_XPM) || defined (MAC_OS)
3278 /* The symbol `xpm' identifying XPM-format images. */
3282 /* Indices of image specification fields in xpm_format, below. */
3284 enum xpm_keyword_index
3300 /* Vector of image_keyword structures describing the format
3301 of valid XPM image specifications. */
3303 static struct image_keyword xpm_format
[XPM_LAST
] =
3305 {":type", IMAGE_SYMBOL_VALUE
, 1},
3306 {":file", IMAGE_STRING_VALUE
, 0},
3307 {":data", IMAGE_STRING_VALUE
, 0},
3308 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3309 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3310 {":relief", IMAGE_INTEGER_VALUE
, 0},
3311 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3312 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3313 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3314 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3315 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3318 /* Structure describing the image type XPM. */
3320 static struct image_type xpm_type
=
3329 #ifdef HAVE_X_WINDOWS
3331 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3332 functions for allocating image colors. Our own functions handle
3333 color allocation failures more gracefully than the ones on the XPM
3336 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3337 #define ALLOC_XPM_COLORS
3339 #endif /* HAVE_X_WINDOWS */
3341 #ifdef ALLOC_XPM_COLORS
3343 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3344 static void xpm_free_color_cache
P_ ((void));
3345 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3346 static int xpm_color_bucket
P_ ((char *));
3347 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3350 /* An entry in a hash table used to cache color definitions of named
3351 colors. This cache is necessary to speed up XPM image loading in
3352 case we do color allocations ourselves. Without it, we would need
3353 a call to XParseColor per pixel in the image. */
3355 struct xpm_cached_color
3357 /* Next in collision chain. */
3358 struct xpm_cached_color
*next
;
3360 /* Color definition (RGB and pixel color). */
3367 /* The hash table used for the color cache, and its bucket vector
3370 #define XPM_COLOR_CACHE_BUCKETS 1001
3371 struct xpm_cached_color
**xpm_color_cache
;
3373 /* Initialize the color cache. */
3376 xpm_init_color_cache (f
, attrs
)
3378 XpmAttributes
*attrs
;
3380 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3381 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3382 memset (xpm_color_cache
, 0, nbytes
);
3383 init_color_table ();
3385 if (attrs
->valuemask
& XpmColorSymbols
)
3390 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3391 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3392 attrs
->colorsymbols
[i
].value
, &color
))
3394 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3396 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3401 /* Free the color cache. */
3404 xpm_free_color_cache ()
3406 struct xpm_cached_color
*p
, *next
;
3409 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3410 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3416 xfree (xpm_color_cache
);
3417 xpm_color_cache
= NULL
;
3418 free_color_table ();
3421 /* Return the bucket index for color named COLOR_NAME in the color
3425 xpm_color_bucket (color_name
)
3431 for (s
= color_name
; *s
; ++s
)
3433 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3437 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3438 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3441 static struct xpm_cached_color
*
3442 xpm_cache_color (f
, color_name
, color
, bucket
)
3449 struct xpm_cached_color
*p
;
3452 bucket
= xpm_color_bucket (color_name
);
3454 nbytes
= sizeof *p
+ strlen (color_name
);
3455 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3456 strcpy (p
->name
, color_name
);
3458 p
->next
= xpm_color_cache
[bucket
];
3459 xpm_color_cache
[bucket
] = p
;
3463 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3464 return the cached definition in *COLOR. Otherwise, make a new
3465 entry in the cache and allocate the color. Value is zero if color
3466 allocation failed. */
3469 xpm_lookup_color (f
, color_name
, color
)
3474 struct xpm_cached_color
*p
;
3475 int h
= xpm_color_bucket (color_name
);
3477 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3478 if (strcmp (p
->name
, color_name
) == 0)
3483 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3486 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3488 p
= xpm_cache_color (f
, color_name
, color
, h
);
3490 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3491 with transparency, and it's useful. */
3492 else if (strcmp ("opaque", color_name
) == 0)
3494 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3495 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3496 p
= xpm_cache_color (f
, color_name
, color
, h
);
3503 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3504 CLOSURE is a pointer to the frame on which we allocate the
3505 color. Return in *COLOR the allocated color. Value is non-zero
3509 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3516 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3520 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3521 is a pointer to the frame on which we allocate the color. Value is
3522 non-zero if successful. */
3525 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3535 #endif /* ALLOC_XPM_COLORS */
3540 /* XPM library details. */
3542 DEF_IMGLIB_FN (XpmFreeAttributes
);
3543 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3544 DEF_IMGLIB_FN (XpmReadFileToImage
);
3545 DEF_IMGLIB_FN (XImageFree
);
3548 init_xpm_functions (Lisp_Object libraries
)
3552 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3555 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3556 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3557 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3558 LOAD_IMGLIB_FN (library
, XImageFree
);
3562 #endif /* HAVE_NTGUI */
3565 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3566 for XPM images. Such a list must consist of conses whose car and
3570 xpm_valid_color_symbols_p (color_symbols
)
3571 Lisp_Object color_symbols
;
3573 while (CONSP (color_symbols
))
3575 Lisp_Object sym
= XCAR (color_symbols
);
3577 || !STRINGP (XCAR (sym
))
3578 || !STRINGP (XCDR (sym
)))
3580 color_symbols
= XCDR (color_symbols
);
3583 return NILP (color_symbols
);
3587 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3590 xpm_image_p (object
)
3593 struct image_keyword fmt
[XPM_LAST
];
3594 bcopy (xpm_format
, fmt
, sizeof fmt
);
3595 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3596 /* Either `:file' or `:data' must be present. */
3597 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3598 /* Either no `:color-symbols' or it's a list of conses
3599 whose car and cdr are strings. */
3600 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3601 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3604 #endif /* HAVE_XPM || MAC_OS */
3606 /* Load image IMG which will be displayed on frame F. Value is
3607 non-zero if successful. */
3617 XpmAttributes attrs
;
3618 Lisp_Object specified_file
, color_symbols
;
3621 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3622 #endif /* HAVE_NTGUI */
3624 /* Configure the XPM lib. Use the visual of frame F. Allocate
3625 close colors. Return colors allocated. */
3626 bzero (&attrs
, sizeof attrs
);
3629 attrs
.visual
= FRAME_X_VISUAL (f
);
3630 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3631 attrs
.valuemask
|= XpmVisual
;
3632 attrs
.valuemask
|= XpmColormap
;
3633 #endif /* HAVE_NTGUI */
3635 #ifdef ALLOC_XPM_COLORS
3636 /* Allocate colors with our own functions which handle
3637 failing color allocation more gracefully. */
3638 attrs
.color_closure
= f
;
3639 attrs
.alloc_color
= xpm_alloc_color
;
3640 attrs
.free_colors
= xpm_free_colors
;
3641 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3642 #else /* not ALLOC_XPM_COLORS */
3643 /* Let the XPM lib allocate colors. */
3644 attrs
.valuemask
|= XpmReturnAllocPixels
;
3645 #ifdef XpmAllocCloseColors
3646 attrs
.alloc_close_colors
= 1;
3647 attrs
.valuemask
|= XpmAllocCloseColors
;
3648 #else /* not XpmAllocCloseColors */
3649 attrs
.closeness
= 600;
3650 attrs
.valuemask
|= XpmCloseness
;
3651 #endif /* not XpmAllocCloseColors */
3652 #endif /* ALLOC_XPM_COLORS */
3654 /* If image specification contains symbolic color definitions, add
3655 these to `attrs'. */
3656 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3657 if (CONSP (color_symbols
))
3660 XpmColorSymbol
*xpm_syms
;
3663 attrs
.valuemask
|= XpmColorSymbols
;
3665 /* Count number of symbols. */
3666 attrs
.numsymbols
= 0;
3667 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3670 /* Allocate an XpmColorSymbol array. */
3671 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3672 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3673 bzero (xpm_syms
, size
);
3674 attrs
.colorsymbols
= xpm_syms
;
3676 /* Fill the color symbol array. */
3677 for (tail
= color_symbols
, i
= 0;
3679 ++i
, tail
= XCDR (tail
))
3681 Lisp_Object name
= XCAR (XCAR (tail
));
3682 Lisp_Object color
= XCDR (XCAR (tail
));
3683 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3684 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3685 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3686 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3690 /* Create a pixmap for the image, either from a file, or from a
3691 string buffer containing data in the same format as an XPM file. */
3692 #ifdef ALLOC_XPM_COLORS
3693 xpm_init_color_cache (f
, &attrs
);
3696 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3700 HDC frame_dc
= get_frame_dc (f
);
3701 hdc
= CreateCompatibleDC (frame_dc
);
3702 release_frame_dc (f
, frame_dc
);
3704 #endif /* HAVE_NTGUI */
3706 if (STRINGP (specified_file
))
3708 Lisp_Object file
= x_find_image_file (specified_file
);
3709 if (!STRINGP (file
))
3711 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3716 /* XpmReadFileToPixmap is not available in the Windows port of
3717 libxpm. But XpmReadFileToImage almost does what we want. */
3718 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3719 &xpm_image
, &xpm_mask
,
3722 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3723 SDATA (file
), &img
->pixmap
, &img
->mask
,
3725 #endif /* HAVE_NTGUI */
3729 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3731 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3732 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3733 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3734 &xpm_image
, &xpm_mask
,
3737 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3739 &img
->pixmap
, &img
->mask
,
3741 #endif /* HAVE_NTGUI */
3744 if (rc
== XpmSuccess
)
3746 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3747 img
->colors
= colors_in_color_table (&img
->ncolors
);
3748 #else /* not ALLOC_XPM_COLORS */
3752 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3753 plus some duplicate attributes. */
3754 if (xpm_image
&& xpm_image
->bitmap
)
3756 img
->pixmap
= xpm_image
->bitmap
;
3757 /* XImageFree in libXpm frees XImage struct without destroying
3758 the bitmap, which is what we want. */
3759 fn_XImageFree (xpm_image
);
3761 if (xpm_mask
&& xpm_mask
->bitmap
)
3763 /* The mask appears to be inverted compared with what we expect.
3764 TODO: invert our expectations. See other places where we
3765 have to invert bits because our idea of masks is backwards. */
3767 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3769 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3770 SelectObject (hdc
, old_obj
);
3772 img
->mask
= xpm_mask
->bitmap
;
3773 fn_XImageFree (xpm_mask
);
3778 #endif /* HAVE_NTGUI */
3780 /* Remember allocated colors. */
3781 img
->ncolors
= attrs
.nalloc_pixels
;
3782 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3783 * sizeof *img
->colors
);
3784 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3786 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3787 #ifdef DEBUG_X_COLORS
3788 register_color (img
->colors
[i
]);
3791 #endif /* not ALLOC_XPM_COLORS */
3793 img
->width
= attrs
.width
;
3794 img
->height
= attrs
.height
;
3795 xassert (img
->width
> 0 && img
->height
> 0);
3797 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3799 fn_XpmFreeAttributes (&attrs
);
3801 XpmFreeAttributes (&attrs
);
3802 #endif /* HAVE_NTGUI */
3808 #endif /* HAVE_NTGUI */
3813 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3816 case XpmFileInvalid
:
3817 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3821 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3824 case XpmColorFailed
:
3825 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3829 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3834 #ifdef ALLOC_XPM_COLORS
3835 xpm_free_color_cache ();
3837 return rc
== XpmSuccess
;
3840 #endif /* HAVE_XPM */
3844 /* XPM support functions for Mac OS where libxpm is not available.
3845 Only XPM version 3 (without any extensions) is supported. */
3847 static int xpm_scan
P_ ((unsigned char **, unsigned char *,
3848 unsigned char **, int *));
3849 static Lisp_Object xpm_make_color_table_v
3850 P_ ((void (**) (Lisp_Object
, unsigned char *, int, Lisp_Object
),
3851 Lisp_Object (**) (Lisp_Object
, unsigned char *, int)));
3852 static void xpm_put_color_table_v
P_ ((Lisp_Object
, unsigned char *,
3854 static Lisp_Object xpm_get_color_table_v
P_ ((Lisp_Object
,
3855 unsigned char *, int));
3856 static Lisp_Object xpm_make_color_table_h
3857 P_ ((void (**) (Lisp_Object
, unsigned char *, int, Lisp_Object
),
3858 Lisp_Object (**) (Lisp_Object
, unsigned char *, int)));
3859 static void xpm_put_color_table_h
P_ ((Lisp_Object
, unsigned char *,
3861 static Lisp_Object xpm_get_color_table_h
P_ ((Lisp_Object
,
3862 unsigned char *, int));
3863 static int xpm_str_to_color_key
P_ ((char *));
3864 static int xpm_load_image
P_ ((struct frame
*, struct image
*,
3865 unsigned char *, unsigned char *));
3867 /* Tokens returned from xpm_scan. */
3876 /* Scan an XPM data and return a character (< 256) or a token defined
3877 by enum xpm_token above. *S and END are the start (inclusive) and
3878 the end (exclusive) addresses of the data, respectively. Advance
3879 *S while scanning. If token is either XPM_TK_IDENT or
3880 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3881 length of the corresponding token, respectively. */
3884 xpm_scan (s
, end
, beg
, len
)
3885 unsigned char **s
, *end
, **beg
;
3892 /* Skip white-space. */
3893 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3896 /* gnus-pointer.xpm uses '-' in its identifier.
3897 sb-dir-plus.xpm uses '+' in its identifier. */
3898 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3902 (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3905 return XPM_TK_IDENT
;
3910 while (*s
< end
&& **s
!= '"')
3915 return XPM_TK_STRING
;
3919 if (*s
< end
&& **s
== '*')
3921 /* C-style comment. */
3925 while (*s
< end
&& *(*s
)++ != '*')
3928 while (*s
< end
&& **s
!= '/');
3942 /* Functions for color table lookup in XPM data. A Key is a string
3943 specifying the color of each pixel in XPM data. A value is either
3944 an integer that specifies a pixel color, Qt that specifies
3945 transparency, or Qnil for the unspecified color. If the length of
3946 the key string is one, a vector is used as a table. Otherwise, a
3947 hash table is used. */
3950 xpm_make_color_table_v (put_func
, get_func
)
3951 void (**put_func
) (Lisp_Object
, unsigned char *, int, Lisp_Object
);
3952 Lisp_Object (**get_func
) (Lisp_Object
, unsigned char *, int);
3954 *put_func
= xpm_put_color_table_v
;
3955 *get_func
= xpm_get_color_table_v
;
3956 return Fmake_vector (make_number (256), Qnil
);
3960 xpm_put_color_table_v (color_table
, chars_start
, chars_len
, color
)
3961 Lisp_Object color_table
;
3962 unsigned char *chars_start
;
3966 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3970 xpm_get_color_table_v (color_table
, chars_start
, chars_len
)
3971 Lisp_Object color_table
;
3972 unsigned char *chars_start
;
3975 return XVECTOR (color_table
)->contents
[*chars_start
];
3979 xpm_make_color_table_h (put_func
, get_func
)
3980 void (**put_func
) (Lisp_Object
, unsigned char *, int, Lisp_Object
);
3981 Lisp_Object (**get_func
) (Lisp_Object
, unsigned char *, int);
3983 *put_func
= xpm_put_color_table_h
;
3984 *get_func
= xpm_get_color_table_h
;
3985 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3986 make_float (DEFAULT_REHASH_SIZE
),
3987 make_float (DEFAULT_REHASH_THRESHOLD
),
3992 xpm_put_color_table_h (color_table
, chars_start
, chars_len
, color
)
3993 Lisp_Object color_table
;
3994 unsigned char *chars_start
;
3998 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4000 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
4002 hash_lookup (table
, chars
, &hash_code
);
4003 hash_put (table
, chars
, color
, hash_code
);
4007 xpm_get_color_table_h (color_table
, chars_start
, chars_len
)
4008 Lisp_Object color_table
;
4009 unsigned char *chars_start
;
4012 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
4013 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
4016 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
4019 enum xpm_color_key
{
4027 static char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
4030 xpm_str_to_color_key (s
)
4036 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
4038 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
4044 xpm_load_image (f
, img
, contents
, end
)
4047 unsigned char *contents
, *end
;
4049 unsigned char *s
= contents
, *beg
, *str
;
4050 unsigned char buffer
[BUFSIZ
];
4051 int width
, height
, x
, y
;
4052 int num_colors
, chars_per_pixel
;
4054 void (*put_color_table
) (Lisp_Object
, unsigned char *, int, Lisp_Object
);
4055 Lisp_Object (*get_color_table
) (Lisp_Object
, unsigned char *, int);
4056 Lisp_Object frame
, color_symbols
, color_table
;
4057 int best_key
, have_mask
= 0;
4058 XImagePtr ximg
= NULL
, mask_img
= NULL
;
4061 LA1 = xpm_scan (&s, end, &beg, &len)
4063 #define expect(TOKEN) \
4064 if (LA1 != (TOKEN)) \
4069 #define expect_ident(IDENT) \
4070 if (LA1 == XPM_TK_IDENT \
4071 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
4076 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
4080 expect_ident ("static");
4081 expect_ident ("char");
4083 expect (XPM_TK_IDENT
);
4088 expect (XPM_TK_STRING
);
4091 memcpy (buffer
, beg
, len
);
4093 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
4094 &num_colors
, &chars_per_pixel
) != 4
4095 || width
<= 0 || height
<= 0
4096 || num_colors
<= 0 || chars_per_pixel
<= 0)
4100 XSETFRAME (frame
, f
);
4101 if (!NILP (Fxw_display_color_p (frame
)))
4102 best_key
= XPM_COLOR_KEY_C
;
4103 else if (!NILP (Fx_display_grayscale_p (frame
)))
4104 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
4105 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
4107 best_key
= XPM_COLOR_KEY_M
;
4109 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
4110 if (chars_per_pixel
== 1)
4111 color_table
= xpm_make_color_table_v (&put_color_table
,
4114 color_table
= xpm_make_color_table_h (&put_color_table
,
4117 while (num_colors
-- > 0)
4119 unsigned char *color
, *max_color
;
4120 int key
, next_key
, max_key
= 0;
4121 Lisp_Object symbol_color
= Qnil
, color_val
;
4124 expect (XPM_TK_STRING
);
4125 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
4127 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
4128 buffer
[len
- chars_per_pixel
] = '\0';
4130 str
= strtok (buffer
, " \t");
4133 key
= xpm_str_to_color_key (str
);
4138 color
= strtok (NULL
, " \t");
4142 while (str
= strtok (NULL
, " \t"))
4144 next_key
= xpm_str_to_color_key (str
);
4147 color
[strlen (color
)] = ' ';
4150 if (key
== XPM_COLOR_KEY_S
)
4152 if (NILP (symbol_color
))
4153 symbol_color
= build_string (color
);
4155 else if (max_key
< key
&& key
<= best_key
)
4165 if (!NILP (color_symbols
) && !NILP (symbol_color
))
4167 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
4169 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
4170 if (xstricmp (SDATA (XCDR (specified_color
)), "None") == 0)
4172 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
4174 color_val
= make_number (cdef
.pixel
);
4176 if (NILP (color_val
) && max_key
> 0)
4177 if (xstricmp (max_color
, "None") == 0)
4179 else if (x_defined_color (f
, max_color
, &cdef
, 0))
4180 color_val
= make_number (cdef
.pixel
);
4181 if (!NILP (color_val
))
4182 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
4187 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4188 &ximg
, &img
->pixmap
)
4189 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
4190 &mask_img
, &img
->mask
))
4192 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
4196 for (y
= 0; y
< height
; y
++)
4198 expect (XPM_TK_STRING
);
4200 if (len
< width
* chars_per_pixel
)
4202 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
4204 Lisp_Object color_val
=
4205 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
4207 XPutPixel (ximg
, x
, y
,
4208 (INTEGERP (color_val
) ? XINT (color_val
)
4209 : FRAME_FOREGROUND_PIXEL (f
)));
4210 XPutPixel (mask_img
, x
, y
,
4211 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW (f
)
4212 : (have_mask
= 1, PIX_MASK_RETAIN (f
))));
4219 img
->height
= height
;
4221 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4222 x_destroy_x_image (ximg
);
4225 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4226 x_destroy_x_image (mask_img
);
4230 x_destroy_x_image (mask_img
);
4231 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4232 img
->mask
= NO_PIXMAP
;
4238 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4240 x_destroy_x_image (ximg
);
4241 x_destroy_x_image (mask_img
);
4242 x_clear_image (f
, img
);
4256 Lisp_Object file_name
;
4258 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4259 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4260 if (STRINGP (file_name
))
4263 unsigned char *contents
;
4265 struct gcpro gcpro1
;
4267 file
= x_find_image_file (file_name
);
4269 if (!STRINGP (file
))
4271 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4276 contents
= slurp_file (SDATA (file
), &size
);
4277 if (contents
== NULL
)
4279 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4284 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4292 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4293 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4294 SDATA (data
) + SBYTES (data
));
4304 /***********************************************************************
4306 ***********************************************************************/
4308 #ifdef COLOR_TABLE_SUPPORT
4310 /* An entry in the color table mapping an RGB color to a pixel color. */
4315 unsigned long pixel
;
4317 /* Next in color table collision list. */
4318 struct ct_color
*next
;
4321 /* The bucket vector size to use. Must be prime. */
4325 /* Value is a hash of the RGB color given by R, G, and B. */
4327 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4329 /* The color hash table. */
4331 struct ct_color
**ct_table
;
4333 /* Number of entries in the color table. */
4335 int ct_colors_allocated
;
4337 /* Initialize the color table. */
4342 int size
= CT_SIZE
* sizeof (*ct_table
);
4343 ct_table
= (struct ct_color
**) xmalloc (size
);
4344 bzero (ct_table
, size
);
4345 ct_colors_allocated
= 0;
4349 /* Free memory associated with the color table. */
4355 struct ct_color
*p
, *next
;
4357 for (i
= 0; i
< CT_SIZE
; ++i
)
4358 for (p
= ct_table
[i
]; p
; p
= next
)
4369 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4370 entry for that color already is in the color table, return the
4371 pixel color of that entry. Otherwise, allocate a new color for R,
4372 G, B, and make an entry in the color table. */
4374 static unsigned long
4375 lookup_rgb_color (f
, r
, g
, b
)
4379 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4380 int i
= hash
% CT_SIZE
;
4382 Display_Info
*dpyinfo
;
4384 /* Handle TrueColor visuals specially, which improves performance by
4385 two orders of magnitude. Freeing colors on TrueColor visuals is
4386 a nop, and pixel colors specify RGB values directly. See also
4387 the Xlib spec, chapter 3.1. */
4388 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4389 if (dpyinfo
->red_bits
> 0)
4391 unsigned long pr
, pg
, pb
;
4393 /* Apply gamma-correction like normal color allocation does. */
4397 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4398 gamma_correct (f
, &color
);
4399 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4402 /* Scale down RGB values to the visual's bits per RGB, and shift
4403 them to the right position in the pixel color. Note that the
4404 original RGB values are 16-bit values, as usual in X. */
4405 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4406 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4407 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4409 /* Assemble the pixel color. */
4410 return pr
| pg
| pb
;
4413 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4414 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4420 #ifdef HAVE_X_WINDOWS
4429 cmap
= FRAME_X_COLORMAP (f
);
4430 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4433 ++ct_colors_allocated
;
4434 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4438 p
->pixel
= color
.pixel
;
4439 p
->next
= ct_table
[i
];
4443 return FRAME_FOREGROUND_PIXEL (f
);
4448 color
= PALETTERGB (r
, g
, b
);
4450 color
= RGB_TO_ULONG (r
, g
, b
);
4451 #endif /* HAVE_NTGUI */
4452 ++ct_colors_allocated
;
4453 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4458 p
->next
= ct_table
[i
];
4460 #endif /* HAVE_X_WINDOWS */
4468 /* Look up pixel color PIXEL which is used on frame F in the color
4469 table. If not already present, allocate it. Value is PIXEL. */
4471 static unsigned long
4472 lookup_pixel_color (f
, pixel
)
4474 unsigned long pixel
;
4476 int i
= pixel
% CT_SIZE
;
4479 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4480 if (p
->pixel
== pixel
)
4489 #ifdef HAVE_X_WINDOWS
4490 cmap
= FRAME_X_COLORMAP (f
);
4491 color
.pixel
= pixel
;
4492 x_query_color (f
, &color
);
4493 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4496 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4497 color
.pixel
= pixel
;
4498 XQueryColor (NULL
, cmap
, &color
);
4499 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4501 #endif /* HAVE_X_WINDOWS */
4505 ++ct_colors_allocated
;
4507 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4512 p
->next
= ct_table
[i
];
4516 return FRAME_FOREGROUND_PIXEL (f
);
4522 /* Value is a vector of all pixel colors contained in the color table,
4523 allocated via xmalloc. Set *N to the number of colors. */
4525 static unsigned long *
4526 colors_in_color_table (n
)
4531 unsigned long *colors
;
4533 if (ct_colors_allocated
== 0)
4540 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4542 *n
= ct_colors_allocated
;
4544 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4545 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4546 colors
[j
++] = p
->pixel
;
4552 #else /* COLOR_TABLE_SUPPORT */
4554 static unsigned long
4555 lookup_rgb_color (f
, r
, g
, b
)
4559 unsigned long pixel
;
4562 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4563 gamma_correct (f
, &pixel
);
4567 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4568 #endif /* HAVE_NTGUI */
4577 #endif /* COLOR_TABLE_SUPPORT */
4580 /***********************************************************************
4582 ***********************************************************************/
4584 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4585 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4586 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4589 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4590 #endif /* HAVE_NTGUI */
4592 /* Non-zero means draw a cross on images having `:conversion
4595 int cross_disabled_images
;
4597 /* Edge detection matrices for different edge-detection
4600 static int emboss_matrix
[9] = {
4602 2, -1, 0, /* y - 1 */
4604 0, 1, -2 /* y + 1 */
4607 static int laplace_matrix
[9] = {
4609 1, 0, 0, /* y - 1 */
4611 0, 0, -1 /* y + 1 */
4614 /* Value is the intensity of the color whose red/green/blue values
4617 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4620 /* On frame F, return an array of XColor structures describing image
4621 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4622 non-zero means also fill the red/green/blue members of the XColor
4623 structures. Value is a pointer to the array of XColors structures,
4624 allocated with xmalloc; it must be freed by the caller. */
4627 x_to_xcolors (f
, img
, rgb_p
)
4634 XImagePtr_or_DC ximg
;
4638 #endif /* HAVE_NTGUI */
4640 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4643 /* Get the X image IMG->pixmap. */
4644 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4645 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4647 /* Load the image into a memory device context. */
4648 hdc
= get_frame_dc (f
);
4649 ximg
= CreateCompatibleDC (hdc
);
4650 release_frame_dc (f
, hdc
);
4651 prev
= SelectObject (ximg
, img
->pixmap
);
4652 #endif /* HAVE_NTGUI */
4654 /* Fill the `pixel' members of the XColor array. I wished there
4655 were an easy and portable way to circumvent XGetPixel. */
4657 for (y
= 0; y
< img
->height
; ++y
)
4661 #ifdef HAVE_X_WINDOWS
4662 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4663 p
->pixel
= XGetPixel (ximg
, x
, y
);
4665 x_query_colors (f
, row
, img
->width
);
4669 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4671 /* W32_TODO: palette support needed here? */
4672 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4676 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4677 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4678 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4681 p
->red
= 256 * GetRValue (p
->pixel
);
4682 p
->green
= 256 * GetGValue (p
->pixel
);
4683 p
->blue
= 256 * GetBValue (p
->pixel
);
4684 #endif /* HAVE_NTGUI */
4687 #endif /* HAVE_X_WINDOWS */
4690 Destroy_Image (ximg
, prev
);
4697 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4698 created with CreateDIBSection, with the pointer to the bit values
4699 stored in ximg->data. */
4701 static void XPutPixel (ximg
, x
, y
, color
)
4706 int width
= ximg
->info
.bmiHeader
.biWidth
;
4707 int height
= ximg
->info
.bmiHeader
.biHeight
;
4708 unsigned char * pixel
;
4710 /* True color images. */
4711 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4713 int rowbytes
= width
* 3;
4714 /* Ensure scanlines are aligned on 4 byte boundaries. */
4716 rowbytes
+= 4 - (rowbytes
% 4);
4718 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4719 /* Windows bitmaps are in BGR order. */
4720 *pixel
= GetBValue (color
);
4721 *(pixel
+ 1) = GetGValue (color
);
4722 *(pixel
+ 2) = GetRValue (color
);
4724 /* Monochrome images. */
4725 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4727 int rowbytes
= width
/ 8;
4728 /* Ensure scanlines are aligned on 4 byte boundaries. */
4730 rowbytes
+= 4 - (rowbytes
% 4);
4731 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4732 /* Filter out palette info. */
4733 if (color
& 0x00ffffff)
4734 *pixel
= *pixel
| (1 << x
% 8);
4736 *pixel
= *pixel
& ~(1 << x
% 8);
4739 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4742 #endif /* HAVE_NTGUI */
4744 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4745 RGB members are set. F is the frame on which this all happens.
4746 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4749 x_from_xcolors (f
, img
, colors
)
4759 init_color_table ();
4761 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4764 for (y
= 0; y
< img
->height
; ++y
)
4765 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4767 unsigned long pixel
;
4768 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4769 XPutPixel (oimg
, x
, y
, pixel
);
4773 x_clear_image_1 (f
, img
, 1, 0, 1);
4775 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4776 x_destroy_x_image (oimg
);
4777 img
->pixmap
= pixmap
;
4778 #ifdef COLOR_TABLE_SUPPORT
4779 img
->colors
= colors_in_color_table (&img
->ncolors
);
4780 free_color_table ();
4781 #endif /* COLOR_TABLE_SUPPORT */
4785 /* On frame F, perform edge-detection on image IMG.
4787 MATRIX is a nine-element array specifying the transformation
4788 matrix. See emboss_matrix for an example.
4790 COLOR_ADJUST is a color adjustment added to each pixel of the
4794 x_detect_edges (f
, img
, matrix
, color_adjust
)
4797 int matrix
[9], color_adjust
;
4799 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4803 for (i
= sum
= 0; i
< 9; ++i
)
4804 sum
+= abs (matrix
[i
]);
4806 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4808 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4810 for (y
= 0; y
< img
->height
; ++y
)
4812 p
= COLOR (new, 0, y
);
4813 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4814 p
= COLOR (new, img
->width
- 1, y
);
4815 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4818 for (x
= 1; x
< img
->width
- 1; ++x
)
4820 p
= COLOR (new, x
, 0);
4821 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4822 p
= COLOR (new, x
, img
->height
- 1);
4823 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4826 for (y
= 1; y
< img
->height
- 1; ++y
)
4828 p
= COLOR (new, 1, y
);
4830 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4832 int r
, g
, b
, y1
, x1
;
4835 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
4836 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
4839 XColor
*t
= COLOR (colors
, x1
, y1
);
4840 r
+= matrix
[i
] * t
->red
;
4841 g
+= matrix
[i
] * t
->green
;
4842 b
+= matrix
[i
] * t
->blue
;
4845 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4846 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4847 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4848 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4853 x_from_xcolors (f
, img
, new);
4859 /* Perform the pre-defined `emboss' edge-detection on image IMG
4867 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4871 /* Transform image IMG which is used on frame F with a Laplace
4872 edge-detection algorithm. The result is an image that can be used
4873 to draw disabled buttons, for example. */
4880 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4884 /* Perform edge-detection on image IMG on frame F, with specified
4885 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4887 MATRIX must be either
4889 - a list of at least 9 numbers in row-major form
4890 - a vector of at least 9 numbers
4892 COLOR_ADJUST nil means use a default; otherwise it must be a
4896 x_edge_detection (f
, img
, matrix
, color_adjust
)
4899 Lisp_Object matrix
, color_adjust
;
4907 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4908 ++i
, matrix
= XCDR (matrix
))
4909 trans
[i
] = XFLOATINT (XCAR (matrix
));
4911 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4913 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4914 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4917 if (NILP (color_adjust
))
4918 color_adjust
= make_number (0xffff / 2);
4920 if (i
== 9 && NUMBERP (color_adjust
))
4921 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
4925 /* Transform image IMG on frame F so that it looks disabled. */
4928 x_disable_image (f
, img
)
4932 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4934 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4936 int n_planes
= dpyinfo
->n_planes
;
4937 #endif /* HAVE_NTGUI */
4941 /* Color (or grayscale). Convert to gray, and equalize. Just
4942 drawing such images with a stipple can look very odd, so
4943 we're using this method instead. */
4944 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4946 const int h
= 15000;
4947 const int l
= 30000;
4949 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4953 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4954 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4955 p
->red
= p
->green
= p
->blue
= i2
;
4958 x_from_xcolors (f
, img
, colors
);
4961 /* Draw a cross over the disabled image, if we must or if we
4963 if (n_planes
< 2 || cross_disabled_images
)
4966 Display
*dpy
= FRAME_X_DISPLAY (f
);
4970 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, NULL, 0, NULL)
4971 #define MaskForeground(f) PIX_MASK_DRAW (f)
4973 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, pixmap, 0, NULL)
4974 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4977 gc
= XCreateGC_pixmap (dpy
, img
->pixmap
);
4978 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4979 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4980 img
->width
- 1, img
->height
- 1);
4981 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4987 gc
= XCreateGC_pixmap (dpy
, img
->mask
);
4988 XSetForeground (dpy
, gc
, MaskForeground (f
));
4989 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4990 img
->width
- 1, img
->height
- 1);
4991 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4999 hdc
= get_frame_dc (f
);
5000 bmpdc
= CreateCompatibleDC (hdc
);
5001 release_frame_dc (f
, hdc
);
5003 prev
= SelectObject (bmpdc
, img
->pixmap
);
5005 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
5006 MoveToEx (bmpdc
, 0, 0, NULL
);
5007 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5008 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5009 LineTo (bmpdc
, img
->width
- 1, 0);
5013 SelectObject (bmpdc
, img
->mask
);
5014 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
5015 MoveToEx (bmpdc
, 0, 0, NULL
);
5016 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
5017 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
5018 LineTo (bmpdc
, img
->width
- 1, 0);
5020 SelectObject (bmpdc
, prev
);
5022 #endif /* HAVE_NTGUI */
5027 /* Build a mask for image IMG which is used on frame F. FILE is the
5028 name of an image file, for error messages. HOW determines how to
5029 determine the background color of IMG. If it is a list '(R G B)',
5030 with R, G, and B being integers >= 0, take that as the color of the
5031 background. Otherwise, determine the background color of IMG
5032 heuristically. Value is non-zero if successful. */
5035 x_build_heuristic_mask (f
, img
, how
)
5040 XImagePtr_or_DC ximg
;
5048 #endif /* HAVE_NTGUI */
5049 int x
, y
, rc
, use_img_background
;
5050 unsigned long bg
= 0;
5054 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
5055 img
->mask
= NO_PIXMAP
;
5056 img
->background_transparent_valid
= 0;
5060 /* Create an image and pixmap serving as mask. */
5061 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
5062 &mask_img
, &img
->mask
);
5066 /* Get the X image of IMG->pixmap. */
5067 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
5068 img
->width
, img
->height
,
5071 /* Create the bit array serving as mask. */
5072 row_width
= (img
->width
+ 7) / 8;
5073 mask_img
= xmalloc (row_width
* img
->height
);
5074 bzero (mask_img
, row_width
* img
->height
);
5076 /* Create a memory device context for IMG->pixmap. */
5077 frame_dc
= get_frame_dc (f
);
5078 ximg
= CreateCompatibleDC (frame_dc
);
5079 release_frame_dc (f
, frame_dc
);
5080 prev
= SelectObject (ximg
, img
->pixmap
);
5081 #endif /* HAVE_NTGUI */
5083 /* Determine the background color of ximg. If HOW is `(R G B)'
5084 take that as color. Otherwise, use the image's background color. */
5085 use_img_background
= 1;
5091 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
5093 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
5097 if (i
== 3 && NILP (how
))
5099 char color_name
[30];
5100 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
5103 0x00ffffff & /* Filter out palette info. */
5104 #endif /* HAVE_NTGUI */
5105 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
5106 use_img_background
= 0;
5110 if (use_img_background
)
5111 bg
= four_corners_best (ximg
, img
->width
, img
->height
);
5113 /* Set all bits in mask_img to 1 whose color in ximg is different
5114 from the background color bg. */
5116 for (y
= 0; y
< img
->height
; ++y
)
5117 for (x
= 0; x
< img
->width
; ++x
)
5118 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
5119 ? PIX_MASK_DRAW (f
) : PIX_MASK_RETAIN (f
)));
5121 /* Fill in the background_transparent field while we have the mask handy. */
5122 image_background_transparent (img
, f
, mask_img
);
5124 /* Put mask_img into img->mask. */
5125 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5126 x_destroy_x_image (mask_img
);
5129 for (y
= 0; y
< img
->height
; ++y
)
5130 for (x
= 0; x
< img
->width
; ++x
)
5132 COLORREF p
= GetPixel (ximg
, x
, y
);
5134 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
5137 /* Create the mask image. */
5138 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
5140 /* Fill in the background_transparent field while we have the mask handy. */
5141 SelectObject (ximg
, img
->mask
);
5142 image_background_transparent (img
, f
, ximg
);
5144 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
5146 #endif /* HAVE_NTGUI */
5148 Destroy_Image (ximg
, prev
);
5154 /***********************************************************************
5155 PBM (mono, gray, color)
5156 ***********************************************************************/
5158 static int pbm_image_p
P_ ((Lisp_Object object
));
5159 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
5160 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
5162 /* The symbol `pbm' identifying images of this type. */
5166 /* Indices of image specification fields in gs_format, below. */
5168 enum pbm_keyword_index
5184 /* Vector of image_keyword structures describing the format
5185 of valid user-defined image specifications. */
5187 static struct image_keyword pbm_format
[PBM_LAST
] =
5189 {":type", IMAGE_SYMBOL_VALUE
, 1},
5190 {":file", IMAGE_STRING_VALUE
, 0},
5191 {":data", IMAGE_STRING_VALUE
, 0},
5192 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5193 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5194 {":relief", IMAGE_INTEGER_VALUE
, 0},
5195 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5196 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5197 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5198 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
5199 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5202 /* Structure describing the image type `pbm'. */
5204 static struct image_type pbm_type
=
5214 /* Return non-zero if OBJECT is a valid PBM image specification. */
5217 pbm_image_p (object
)
5220 struct image_keyword fmt
[PBM_LAST
];
5222 bcopy (pbm_format
, fmt
, sizeof fmt
);
5224 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
5227 /* Must specify either :data or :file. */
5228 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
5232 /* Scan a decimal number from *S and return it. Advance *S while
5233 reading the number. END is the end of the string. Value is -1 at
5237 pbm_scan_number (s
, end
)
5238 unsigned char **s
, *end
;
5240 int c
= 0, val
= -1;
5244 /* Skip white-space. */
5245 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
5250 /* Skip comment to end of line. */
5251 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
5254 else if (isdigit (c
))
5256 /* Read decimal number. */
5258 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
5259 val
= 10 * val
+ c
- '0';
5271 #if 0 /* Unused. ++kfs */
5273 /* Read FILE into memory. Value is a pointer to a buffer allocated
5274 with xmalloc holding FILE's contents. Value is null if an error
5275 occurred. *SIZE is set to the size of the file. */
5278 pbm_read_file (file
, size
)
5286 if (stat (SDATA (file
), &st
) == 0
5287 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5288 && (buf
= (char *) xmalloc (st
.st_size
),
5289 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5308 #endif /* HAVE_NTGUI */
5310 /* Load PBM image IMG for use on frame F. */
5318 int width
, height
, max_color_idx
= 0;
5320 Lisp_Object file
, specified_file
;
5321 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5322 struct gcpro gcpro1
;
5323 unsigned char *contents
= NULL
;
5324 unsigned char *end
, *p
;
5327 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5331 if (STRINGP (specified_file
))
5333 file
= x_find_image_file (specified_file
);
5334 if (!STRINGP (file
))
5336 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5341 contents
= slurp_file (SDATA (file
), &size
);
5342 if (contents
== NULL
)
5344 image_error ("Error reading `%s'", file
, Qnil
);
5350 end
= contents
+ size
;
5355 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5357 end
= p
+ SBYTES (data
);
5360 /* Check magic number. */
5361 if (end
- p
< 2 || *p
++ != 'P')
5363 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5373 raw_p
= 0, type
= PBM_MONO
;
5377 raw_p
= 0, type
= PBM_GRAY
;
5381 raw_p
= 0, type
= PBM_COLOR
;
5385 raw_p
= 1, type
= PBM_MONO
;
5389 raw_p
= 1, type
= PBM_GRAY
;
5393 raw_p
= 1, type
= PBM_COLOR
;
5397 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5401 /* Read width, height, maximum color-component. Characters
5402 starting with `#' up to the end of a line are ignored. */
5403 width
= pbm_scan_number (&p
, end
);
5404 height
= pbm_scan_number (&p
, end
);
5406 if (type
!= PBM_MONO
)
5408 max_color_idx
= pbm_scan_number (&p
, end
);
5409 if (raw_p
&& max_color_idx
> 255)
5410 max_color_idx
= 255;
5415 || (type
!= PBM_MONO
&& max_color_idx
< 0))
5418 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5419 &ximg
, &img
->pixmap
))
5422 /* Initialize the color hash table. */
5423 init_color_table ();
5425 if (type
== PBM_MONO
)
5428 struct image_keyword fmt
[PBM_LAST
];
5429 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5430 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5432 /* Parse the image specification. */
5433 bcopy (pbm_format
, fmt
, sizeof fmt
);
5434 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5436 /* Get foreground and background colors, maybe allocate colors. */
5437 if (fmt
[PBM_FOREGROUND
].count
5438 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5439 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5440 if (fmt
[PBM_BACKGROUND
].count
5441 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5443 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5444 img
->background
= bg
;
5445 img
->background_valid
= 1;
5448 for (y
= 0; y
< height
; ++y
)
5449 for (x
= 0; x
< width
; ++x
)
5459 g
= pbm_scan_number (&p
, end
);
5461 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5466 for (y
= 0; y
< height
; ++y
)
5467 for (x
= 0; x
< width
; ++x
)
5471 if (type
== PBM_GRAY
)
5472 r
= g
= b
= raw_p
? *p
++ : pbm_scan_number (&p
, end
);
5481 r
= pbm_scan_number (&p
, end
);
5482 g
= pbm_scan_number (&p
, end
);
5483 b
= pbm_scan_number (&p
, end
);
5486 if (r
< 0 || g
< 0 || b
< 0)
5488 x_destroy_x_image (ximg
);
5489 image_error ("Invalid pixel value in image `%s'",
5494 /* RGB values are now in the range 0..max_color_idx.
5495 Scale this to the range 0..0xffff supported by X. */
5496 r
= (double) r
* 65535 / max_color_idx
;
5497 g
= (double) g
* 65535 / max_color_idx
;
5498 b
= (double) b
* 65535 / max_color_idx
;
5499 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5503 #ifdef COLOR_TABLE_SUPPORT
5504 /* Store in IMG->colors the colors allocated for the image, and
5505 free the color table. */
5506 img
->colors
= colors_in_color_table (&img
->ncolors
);
5507 free_color_table ();
5508 #endif /* COLOR_TABLE_SUPPORT */
5511 img
->height
= height
;
5513 /* Maybe fill in the background field while we have ximg handy. */
5515 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5516 IMAGE_BACKGROUND (img
, f
, ximg
);
5518 /* Put the image into a pixmap. */
5519 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5520 x_destroy_x_image (ximg
);
5522 /* X and W32 versions did it here, MAC version above. ++kfs
5524 img->height = height; */
5532 /***********************************************************************
5534 ***********************************************************************/
5536 #if defined (HAVE_PNG) || defined (MAC_OS)
5538 /* Function prototypes. */
5540 static int png_image_p
P_ ((Lisp_Object object
));
5541 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
5543 /* The symbol `png' identifying images of this type. */
5547 /* Indices of image specification fields in png_format, below. */
5549 enum png_keyword_index
5564 /* Vector of image_keyword structures describing the format
5565 of valid user-defined image specifications. */
5567 static struct image_keyword png_format
[PNG_LAST
] =
5569 {":type", IMAGE_SYMBOL_VALUE
, 1},
5570 {":data", IMAGE_STRING_VALUE
, 0},
5571 {":file", IMAGE_STRING_VALUE
, 0},
5572 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5573 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5574 {":relief", IMAGE_INTEGER_VALUE
, 0},
5575 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5576 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5577 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5578 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5581 /* Structure describing the image type `png'. */
5583 static struct image_type png_type
=
5592 /* Return non-zero if OBJECT is a valid PNG image specification. */
5595 png_image_p (object
)
5598 struct image_keyword fmt
[PNG_LAST
];
5599 bcopy (png_format
, fmt
, sizeof fmt
);
5601 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5604 /* Must specify either the :data or :file keyword. */
5605 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5608 #endif /* HAVE_PNG || MAC_OS */
5613 #if defined HAVE_LIBPNG_PNG_H
5614 # include <libpng/png.h>
5620 /* PNG library details. */
5622 DEF_IMGLIB_FN (png_get_io_ptr
);
5623 DEF_IMGLIB_FN (png_check_sig
);
5624 DEF_IMGLIB_FN (png_create_read_struct
);
5625 DEF_IMGLIB_FN (png_create_info_struct
);
5626 DEF_IMGLIB_FN (png_destroy_read_struct
);
5627 DEF_IMGLIB_FN (png_set_read_fn
);
5628 DEF_IMGLIB_FN (png_init_io
);
5629 DEF_IMGLIB_FN (png_set_sig_bytes
);
5630 DEF_IMGLIB_FN (png_read_info
);
5631 DEF_IMGLIB_FN (png_get_IHDR
);
5632 DEF_IMGLIB_FN (png_get_valid
);
5633 DEF_IMGLIB_FN (png_set_strip_16
);
5634 DEF_IMGLIB_FN (png_set_expand
);
5635 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5636 DEF_IMGLIB_FN (png_set_background
);
5637 DEF_IMGLIB_FN (png_get_bKGD
);
5638 DEF_IMGLIB_FN (png_read_update_info
);
5639 DEF_IMGLIB_FN (png_get_channels
);
5640 DEF_IMGLIB_FN (png_get_rowbytes
);
5641 DEF_IMGLIB_FN (png_read_image
);
5642 DEF_IMGLIB_FN (png_read_end
);
5643 DEF_IMGLIB_FN (png_error
);
5646 init_png_functions (Lisp_Object libraries
)
5650 /* Try loading libpng under probable names. */
5651 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5654 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5655 LOAD_IMGLIB_FN (library
, png_check_sig
);
5656 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5657 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5658 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5659 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5660 LOAD_IMGLIB_FN (library
, png_init_io
);
5661 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5662 LOAD_IMGLIB_FN (library
, png_read_info
);
5663 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5664 LOAD_IMGLIB_FN (library
, png_get_valid
);
5665 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5666 LOAD_IMGLIB_FN (library
, png_set_expand
);
5667 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5668 LOAD_IMGLIB_FN (library
, png_set_background
);
5669 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5670 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5671 LOAD_IMGLIB_FN (library
, png_get_channels
);
5672 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5673 LOAD_IMGLIB_FN (library
, png_read_image
);
5674 LOAD_IMGLIB_FN (library
, png_read_end
);
5675 LOAD_IMGLIB_FN (library
, png_error
);
5680 #define fn_png_get_io_ptr png_get_io_ptr
5681 #define fn_png_check_sig png_check_sig
5682 #define fn_png_create_read_struct png_create_read_struct
5683 #define fn_png_create_info_struct png_create_info_struct
5684 #define fn_png_destroy_read_struct png_destroy_read_struct
5685 #define fn_png_set_read_fn png_set_read_fn
5686 #define fn_png_init_io png_init_io
5687 #define fn_png_set_sig_bytes png_set_sig_bytes
5688 #define fn_png_read_info png_read_info
5689 #define fn_png_get_IHDR png_get_IHDR
5690 #define fn_png_get_valid png_get_valid
5691 #define fn_png_set_strip_16 png_set_strip_16
5692 #define fn_png_set_expand png_set_expand
5693 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5694 #define fn_png_set_background png_set_background
5695 #define fn_png_get_bKGD png_get_bKGD
5696 #define fn_png_read_update_info png_read_update_info
5697 #define fn_png_get_channels png_get_channels
5698 #define fn_png_get_rowbytes png_get_rowbytes
5699 #define fn_png_read_image png_read_image
5700 #define fn_png_read_end png_read_end
5701 #define fn_png_error png_error
5703 #endif /* HAVE_NTGUI */
5705 /* Error and warning handlers installed when the PNG library
5709 my_png_error (png_ptr
, msg
)
5710 png_struct
*png_ptr
;
5713 xassert (png_ptr
!= NULL
);
5714 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5715 longjmp (png_ptr
->jmpbuf
, 1);
5720 my_png_warning (png_ptr
, msg
)
5721 png_struct
*png_ptr
;
5724 xassert (png_ptr
!= NULL
);
5725 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5728 /* Memory source for PNG decoding. */
5730 struct png_memory_storage
5732 unsigned char *bytes
; /* The data */
5733 size_t len
; /* How big is it? */
5734 int index
; /* Where are we? */
5738 /* Function set as reader function when reading PNG image from memory.
5739 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5740 bytes from the input to DATA. */
5743 /* Work around a problem with MinGW builds of graphics libraries
5744 not honoring calling conventions. */
5745 #pragma optimize("g", off)
5749 png_read_from_memory (png_ptr
, data
, length
)
5750 png_structp png_ptr
;
5754 struct png_memory_storage
*tbr
5755 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5757 if (length
> tbr
->len
- tbr
->index
)
5758 fn_png_error (png_ptr
, "Read error");
5760 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
5761 tbr
->index
= tbr
->index
+ length
;
5765 /* Restore normal optimization, as specified on the command line. */
5766 #pragma optimize("", on)
5769 /* Load PNG image IMG for use on frame F. Value is non-zero if
5777 Lisp_Object file
, specified_file
;
5778 Lisp_Object specified_data
;
5780 XImagePtr ximg
, mask_img
= NULL
;
5781 struct gcpro gcpro1
;
5782 png_struct
*png_ptr
= NULL
;
5783 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5784 FILE *volatile fp
= NULL
;
5786 png_byte
* volatile pixels
= NULL
;
5787 png_byte
** volatile rows
= NULL
;
5788 png_uint_32 width
, height
;
5789 int bit_depth
, color_type
, interlace_type
;
5791 png_uint_32 row_bytes
;
5793 double screen_gamma
;
5794 struct png_memory_storage tbr
; /* Data to be read */
5796 /* Find out what file to load. */
5797 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5798 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5802 if (NILP (specified_data
))
5804 file
= x_find_image_file (specified_file
);
5805 if (!STRINGP (file
))
5807 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5812 /* Open the image file. */
5813 fp
= fopen (SDATA (file
), "rb");
5816 image_error ("Cannot open image file `%s'", file
, Qnil
);
5822 /* Check PNG signature. */
5823 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5824 || !fn_png_check_sig (sig
, sizeof sig
))
5826 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5834 /* Read from memory. */
5835 tbr
.bytes
= SDATA (specified_data
);
5836 tbr
.len
= SBYTES (specified_data
);
5839 /* Check PNG signature. */
5840 if (tbr
.len
< sizeof sig
5841 || !fn_png_check_sig (tbr
.bytes
, sizeof sig
))
5843 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5848 /* Need to skip past the signature. */
5849 tbr
.bytes
+= sizeof (sig
);
5852 /* Initialize read and info structs for PNG lib. */
5853 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
, NULL
,
5854 my_png_error
, my_png_warning
);
5857 if (fp
) fclose (fp
);
5862 info_ptr
= fn_png_create_info_struct (png_ptr
);
5865 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5866 if (fp
) fclose (fp
);
5871 end_info
= fn_png_create_info_struct (png_ptr
);
5874 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5875 if (fp
) fclose (fp
);
5880 /* Set error jump-back. We come back here when the PNG library
5881 detects an error. */
5882 if (setjmp (png_ptr
->jmpbuf
))
5886 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5889 if (fp
) fclose (fp
);
5894 /* Read image info. */
5895 if (!NILP (specified_data
))
5896 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5898 fn_png_init_io (png_ptr
, fp
);
5900 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5901 fn_png_read_info (png_ptr
, info_ptr
);
5902 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5903 &interlace_type
, NULL
, NULL
);
5905 /* If image contains simply transparency data, we prefer to
5906 construct a clipping mask. */
5907 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5912 /* This function is easier to write if we only have to handle
5913 one data format: RGB or RGBA with 8 bits per channel. Let's
5914 transform other formats into that format. */
5916 /* Strip more than 8 bits per channel. */
5917 if (bit_depth
== 16)
5918 fn_png_set_strip_16 (png_ptr
);
5920 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5922 fn_png_set_expand (png_ptr
);
5924 /* Convert grayscale images to RGB. */
5925 if (color_type
== PNG_COLOR_TYPE_GRAY
5926 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5927 fn_png_set_gray_to_rgb (png_ptr
);
5929 screen_gamma
= (f
->gamma
? 1 / f
->gamma
/ 0.45455 : 2.2);
5931 #if 0 /* Avoid double gamma correction for PNG images. */
5932 { /* Tell the PNG lib to handle gamma correction for us. */
5935 #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
5936 if (png_get_sRGB (png_ptr
, info_ptr
, &intent
))
5937 /* The libpng documentation says this is right in this case. */
5938 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
5941 if (png_get_gAMA (png_ptr
, info_ptr
, &image_gamma
))
5942 /* Image contains gamma information. */
5943 png_set_gamma (png_ptr
, screen_gamma
, image_gamma
);
5945 /* Use the standard default for the image gamma. */
5946 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
5950 /* Handle alpha channel by combining the image with a background
5951 color. Do this only if a real alpha channel is supplied. For
5952 simple transparency, we prefer a clipping mask. */
5955 png_color_16
*image_bg
;
5956 Lisp_Object specified_bg
5957 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5959 if (STRINGP (specified_bg
))
5960 /* The user specified `:background', use that. */
5962 /* W32 version incorrectly used COLORREF here!! ++kfs */
5964 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
5966 png_color_16 user_bg
;
5968 bzero (&user_bg
, sizeof user_bg
);
5969 user_bg
.red
= color
.red
>> 8;
5970 user_bg
.green
= color
.green
>> 8;
5971 user_bg
.blue
= color
.blue
>> 8;
5973 fn_png_set_background (png_ptr
, &user_bg
,
5974 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5977 else if (fn_png_get_bKGD (png_ptr
, info_ptr
, &image_bg
))
5978 /* Image contains a background color with which to
5979 combine the image. */
5980 fn_png_set_background (png_ptr
, image_bg
,
5981 PNG_BACKGROUND_GAMMA_FILE
, 1, 1.0);
5984 /* Image does not contain a background color with which
5985 to combine the image data via an alpha channel. Use
5986 the frame's background instead. */
5987 #ifdef HAVE_X_WINDOWS
5989 png_color_16 frame_background
;
5991 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5992 x_query_color (f
, &color
);
5994 bzero (&frame_background
, sizeof frame_background
);
5995 frame_background
.red
= color
.red
>> 8;
5996 frame_background
.green
= color
.green
>> 8;
5997 frame_background
.blue
= color
.blue
>> 8;
5998 #endif /* HAVE_X_WINDOWS */
6002 png_color_16 frame_background
;
6003 color
= FRAME_BACKGROUND_PIXEL (f
);
6004 #if 0 /* W32 TODO : Colormap support. */
6005 x_query_color (f
, &color
);
6007 bzero (&frame_background
, sizeof frame_background
);
6008 frame_background
.red
= GetRValue (color
);
6009 frame_background
.green
= GetGValue (color
);
6010 frame_background
.blue
= GetBValue (color
);
6011 #endif /* HAVE_NTGUI */
6014 unsigned long color
;
6015 png_color_16 frame_background
;
6016 color
= FRAME_BACKGROUND_PIXEL (f
);
6017 #if 0 /* MAC/W32 TODO : Colormap support. */
6018 x_query_color (f
, &color
);
6020 bzero (&frame_background
, sizeof frame_background
);
6021 frame_background
.red
= RED_FROM_ULONG (color
);
6022 frame_background
.green
= GREEN_FROM_ULONG (color
);
6023 frame_background
.blue
= BLUE_FROM_ULONG (color
);
6026 fn_png_set_background (png_ptr
, &frame_background
,
6027 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
6031 /* Update info structure. */
6032 fn_png_read_update_info (png_ptr
, info_ptr
);
6034 /* Get number of channels. Valid values are 1 for grayscale images
6035 and images with a palette, 2 for grayscale images with transparency
6036 information (alpha channel), 3 for RGB images, and 4 for RGB
6037 images with alpha channel, i.e. RGBA. If conversions above were
6038 sufficient we should only have 3 or 4 channels here. */
6039 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
6040 xassert (channels
== 3 || channels
== 4);
6042 /* Number of bytes needed for one row of the image. */
6043 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
6045 /* Allocate memory for the image. */
6046 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
6047 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
6048 for (i
= 0; i
< height
; ++i
)
6049 rows
[i
] = pixels
+ i
* row_bytes
;
6051 /* Read the entire image. */
6052 fn_png_read_image (png_ptr
, rows
);
6053 fn_png_read_end (png_ptr
, info_ptr
);
6060 /* Create the X image and pixmap. */
6061 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
6065 /* Create an image and pixmap serving as mask if the PNG image
6066 contains an alpha channel. */
6069 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
6070 &mask_img
, &img
->mask
))
6072 x_destroy_x_image (ximg
);
6073 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
6074 img
->pixmap
= NO_PIXMAP
;
6078 /* Fill the X image and mask from PNG data. */
6079 init_color_table ();
6081 for (y
= 0; y
< height
; ++y
)
6083 png_byte
*p
= rows
[y
];
6085 for (x
= 0; x
< width
; ++x
)
6092 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
6093 /* An alpha channel, aka mask channel, associates variable
6094 transparency with an image. Where other image formats
6095 support binary transparency---fully transparent or fully
6096 opaque---PNG allows up to 254 levels of partial transparency.
6097 The PNG library implements partial transparency by combining
6098 the image with a specified background color.
6100 I'm not sure how to handle this here nicely: because the
6101 background on which the image is displayed may change, for
6102 real alpha channel support, it would be necessary to create
6103 a new image for each possible background.
6105 What I'm doing now is that a mask is created if we have
6106 boolean transparency information. Otherwise I'm using
6107 the frame's background color to combine the image with. */
6112 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW (f
) : PIX_MASK_RETAIN (f
));
6118 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6119 /* Set IMG's background color from the PNG image, unless the user
6123 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
6125 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
6126 img
->background_valid
= 1;
6130 #ifdef COLOR_TABLE_SUPPORT
6131 /* Remember colors allocated for this image. */
6132 img
->colors
= colors_in_color_table (&img
->ncolors
);
6133 free_color_table ();
6134 #endif /* COLOR_TABLE_SUPPORT */
6137 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
6142 img
->height
= height
;
6144 /* Maybe fill in the background field while we have ximg handy. */
6145 IMAGE_BACKGROUND (img
, f
, ximg
);
6147 /* Put the image into the pixmap, then free the X image and its buffer. */
6148 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6149 x_destroy_x_image (ximg
);
6151 /* Same for the mask. */
6154 /* Fill in the background_transparent field while we have the mask
6156 image_background_transparent (img
, f
, mask_img
);
6158 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
6159 x_destroy_x_image (mask_img
);
6166 #else /* HAVE_PNG */
6175 if (MyCGImageCreateWithPNGDataProvider
)
6176 return image_load_quartz2d (f
, img
, 1);
6179 return image_load_quicktime (f
, img
, kQTFileTypePNG
);
6183 #endif /* !HAVE_PNG */
6187 /***********************************************************************
6189 ***********************************************************************/
6191 #if defined (HAVE_JPEG) || defined (MAC_OS)
6193 static int jpeg_image_p
P_ ((Lisp_Object object
));
6194 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
6196 /* The symbol `jpeg' identifying images of this type. */
6200 /* Indices of image specification fields in gs_format, below. */
6202 enum jpeg_keyword_index
6211 JPEG_HEURISTIC_MASK
,
6217 /* Vector of image_keyword structures describing the format
6218 of valid user-defined image specifications. */
6220 static struct image_keyword jpeg_format
[JPEG_LAST
] =
6222 {":type", IMAGE_SYMBOL_VALUE
, 1},
6223 {":data", IMAGE_STRING_VALUE
, 0},
6224 {":file", IMAGE_STRING_VALUE
, 0},
6225 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6226 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6227 {":relief", IMAGE_INTEGER_VALUE
, 0},
6228 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6229 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6230 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6231 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6234 /* Structure describing the image type `jpeg'. */
6236 static struct image_type jpeg_type
=
6245 /* Return non-zero if OBJECT is a valid JPEG image specification. */
6248 jpeg_image_p (object
)
6251 struct image_keyword fmt
[JPEG_LAST
];
6253 bcopy (jpeg_format
, fmt
, sizeof fmt
);
6255 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
6258 /* Must specify either the :data or :file keyword. */
6259 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
6262 #endif /* HAVE_JPEG || MAC_OS */
6266 /* Work around a warning about HAVE_STDLIB_H being redefined in
6268 #ifdef HAVE_STDLIB_H
6269 #define HAVE_STDLIB_H_1
6270 #undef HAVE_STDLIB_H
6271 #endif /* HAVE_STLIB_H */
6273 #include <jpeglib.h>
6277 #ifdef HAVE_STLIB_H_1
6278 #define HAVE_STDLIB_H 1
6283 /* JPEG library details. */
6284 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
6285 DEF_IMGLIB_FN (jpeg_start_decompress
);
6286 DEF_IMGLIB_FN (jpeg_finish_decompress
);
6287 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
6288 DEF_IMGLIB_FN (jpeg_read_header
);
6289 DEF_IMGLIB_FN (jpeg_read_scanlines
);
6290 DEF_IMGLIB_FN (jpeg_stdio_src
);
6291 DEF_IMGLIB_FN (jpeg_std_error
);
6292 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
6295 init_jpeg_functions (Lisp_Object libraries
)
6299 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6302 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6303 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6304 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6305 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6306 LOAD_IMGLIB_FN (library
, jpeg_stdio_src
);
6307 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6308 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6309 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6310 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6314 /* Wrapper since we can't directly assign the function pointer
6315 to another function pointer that was declared more completely easily. */
6317 jpeg_resync_to_restart_wrapper(cinfo
, desired
)
6318 j_decompress_ptr cinfo
;
6321 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6326 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6327 #define fn_jpeg_start_decompress jpeg_start_decompress
6328 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6329 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6330 #define fn_jpeg_read_header jpeg_read_header
6331 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6332 #define fn_jpeg_stdio_src jpeg_stdio_src
6333 #define fn_jpeg_std_error jpeg_std_error
6334 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6336 #endif /* HAVE_NTGUI */
6338 struct my_jpeg_error_mgr
6340 struct jpeg_error_mgr pub
;
6341 jmp_buf setjmp_buffer
;
6346 my_error_exit (cinfo
)
6349 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6350 longjmp (mgr
->setjmp_buffer
, 1);
6354 /* Init source method for JPEG data source manager. Called by
6355 jpeg_read_header() before any data is actually read. See
6356 libjpeg.doc from the JPEG lib distribution. */
6359 our_init_source (cinfo
)
6360 j_decompress_ptr cinfo
;
6365 /* Fill input buffer method for JPEG data source manager. Called
6366 whenever more data is needed. We read the whole image in one step,
6367 so this only adds a fake end of input marker at the end. */
6370 our_fill_input_buffer (cinfo
)
6371 j_decompress_ptr cinfo
;
6373 /* Insert a fake EOI marker. */
6374 struct jpeg_source_mgr
*src
= cinfo
->src
;
6375 static JOCTET buffer
[2];
6377 buffer
[0] = (JOCTET
) 0xFF;
6378 buffer
[1] = (JOCTET
) JPEG_EOI
;
6380 src
->next_input_byte
= buffer
;
6381 src
->bytes_in_buffer
= 2;
6386 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6387 is the JPEG data source manager. */
6390 our_skip_input_data (cinfo
, num_bytes
)
6391 j_decompress_ptr cinfo
;
6394 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6398 if (num_bytes
> src
->bytes_in_buffer
)
6399 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6401 src
->bytes_in_buffer
-= num_bytes
;
6402 src
->next_input_byte
+= num_bytes
;
6407 /* Method to terminate data source. Called by
6408 jpeg_finish_decompress() after all data has been processed. */
6411 our_term_source (cinfo
)
6412 j_decompress_ptr cinfo
;
6417 /* Set up the JPEG lib for reading an image from DATA which contains
6418 LEN bytes. CINFO is the decompression info structure created for
6419 reading the image. */
6422 jpeg_memory_src (cinfo
, data
, len
)
6423 j_decompress_ptr cinfo
;
6427 struct jpeg_source_mgr
*src
;
6429 if (cinfo
->src
== NULL
)
6431 /* First time for this JPEG object? */
6432 cinfo
->src
= (struct jpeg_source_mgr
*)
6433 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6434 sizeof (struct jpeg_source_mgr
));
6435 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6436 src
->next_input_byte
= data
;
6439 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6440 src
->init_source
= our_init_source
;
6441 src
->fill_input_buffer
= our_fill_input_buffer
;
6442 src
->skip_input_data
= our_skip_input_data
;
6443 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6444 src
->term_source
= our_term_source
;
6445 src
->bytes_in_buffer
= len
;
6446 src
->next_input_byte
= data
;
6450 /* Load image IMG for use on frame F. Patterned after example.c
6451 from the JPEG lib. */
6458 struct jpeg_decompress_struct cinfo
;
6459 struct my_jpeg_error_mgr mgr
;
6460 Lisp_Object file
, specified_file
;
6461 Lisp_Object specified_data
;
6462 FILE * volatile fp
= NULL
;
6464 int row_stride
, x
, y
;
6465 XImagePtr ximg
= NULL
;
6467 unsigned long *colors
;
6469 struct gcpro gcpro1
;
6471 /* Open the JPEG file. */
6472 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6473 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6477 if (NILP (specified_data
))
6479 file
= x_find_image_file (specified_file
);
6480 if (!STRINGP (file
))
6482 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6487 fp
= fopen (SDATA (file
), "rb");
6490 image_error ("Cannot open `%s'", file
, Qnil
);
6496 /* Customize libjpeg's error handling to call my_error_exit when an
6497 error is detected. This function will perform a longjmp. */
6498 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6499 mgr
.pub
.error_exit
= my_error_exit
;
6501 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6505 /* Called from my_error_exit. Display a JPEG error. */
6506 char buffer
[JMSG_LENGTH_MAX
];
6507 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
6508 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6509 build_string (buffer
));
6512 /* Close the input file and destroy the JPEG object. */
6514 fclose ((FILE *) fp
);
6515 fn_jpeg_destroy_decompress (&cinfo
);
6517 /* If we already have an XImage, free that. */
6518 x_destroy_x_image (ximg
);
6520 /* Free pixmap and colors. */
6521 x_clear_image (f
, img
);
6527 /* Create the JPEG decompression object. Let it read from fp.
6528 Read the JPEG image header. */
6529 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6531 if (NILP (specified_data
))
6532 fn_jpeg_stdio_src (&cinfo
, (FILE *) fp
);
6534 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6535 SBYTES (specified_data
));
6537 fn_jpeg_read_header (&cinfo
, TRUE
);
6539 /* Customize decompression so that color quantization will be used.
6540 Start decompression. */
6541 cinfo
.quantize_colors
= TRUE
;
6542 fn_jpeg_start_decompress (&cinfo
);
6543 width
= img
->width
= cinfo
.output_width
;
6544 height
= img
->height
= cinfo
.output_height
;
6546 /* Create X image and pixmap. */
6547 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6548 longjmp (mgr
.setjmp_buffer
, 2);
6550 /* Allocate colors. When color quantization is used,
6551 cinfo.actual_number_of_colors has been set with the number of
6552 colors generated, and cinfo.colormap is a two-dimensional array
6553 of color indices in the range 0..cinfo.actual_number_of_colors.
6554 No more than 255 colors will be generated. */
6558 if (cinfo
.out_color_components
> 2)
6559 ir
= 0, ig
= 1, ib
= 2;
6560 else if (cinfo
.out_color_components
> 1)
6561 ir
= 0, ig
= 1, ib
= 0;
6563 ir
= 0, ig
= 0, ib
= 0;
6565 /* Use the color table mechanism because it handles colors that
6566 cannot be allocated nicely. Such colors will be replaced with
6567 a default color, and we don't have to care about which colors
6568 can be freed safely, and which can't. */
6569 init_color_table ();
6570 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6573 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6575 /* Multiply RGB values with 255 because X expects RGB values
6576 in the range 0..0xffff. */
6577 int r
= cinfo
.colormap
[ir
][i
] << 8;
6578 int g
= cinfo
.colormap
[ig
][i
] << 8;
6579 int b
= cinfo
.colormap
[ib
][i
] << 8;
6580 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6583 #ifdef COLOR_TABLE_SUPPORT
6584 /* Remember those colors actually allocated. */
6585 img
->colors
= colors_in_color_table (&img
->ncolors
);
6586 free_color_table ();
6587 #endif /* COLOR_TABLE_SUPPORT */
6591 row_stride
= width
* cinfo
.output_components
;
6592 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6594 for (y
= 0; y
< height
; ++y
)
6596 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6597 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6598 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6602 fn_jpeg_finish_decompress (&cinfo
);
6603 fn_jpeg_destroy_decompress (&cinfo
);
6605 fclose ((FILE *) fp
);
6607 /* Maybe fill in the background field while we have ximg handy. */
6608 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6609 IMAGE_BACKGROUND (img
, f
, ximg
);
6611 /* Put the image into the pixmap. */
6612 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6613 x_destroy_x_image (ximg
);
6618 #else /* HAVE_JPEG */
6627 return image_load_quartz2d (f
, img
, 0);
6629 return image_load_quicktime (f
, img
, kQTFileTypeJPEG
);
6634 #endif /* !HAVE_JPEG */
6638 /***********************************************************************
6640 ***********************************************************************/
6642 #if defined (HAVE_TIFF) || defined (MAC_OS)
6644 static int tiff_image_p
P_ ((Lisp_Object object
));
6645 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
6647 /* The symbol `tiff' identifying images of this type. */
6651 /* Indices of image specification fields in tiff_format, below. */
6653 enum tiff_keyword_index
6662 TIFF_HEURISTIC_MASK
,
6668 /* Vector of image_keyword structures describing the format
6669 of valid user-defined image specifications. */
6671 static struct image_keyword tiff_format
[TIFF_LAST
] =
6673 {":type", IMAGE_SYMBOL_VALUE
, 1},
6674 {":data", IMAGE_STRING_VALUE
, 0},
6675 {":file", IMAGE_STRING_VALUE
, 0},
6676 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6677 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6678 {":relief", IMAGE_INTEGER_VALUE
, 0},
6679 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6680 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6681 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6682 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6685 /* Structure describing the image type `tiff'. */
6687 static struct image_type tiff_type
=
6696 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6699 tiff_image_p (object
)
6702 struct image_keyword fmt
[TIFF_LAST
];
6703 bcopy (tiff_format
, fmt
, sizeof fmt
);
6705 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6708 /* Must specify either the :data or :file keyword. */
6709 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6712 #endif /* HAVE_TIFF || MAC_OS */
6720 /* TIFF library details. */
6721 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
6722 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
6723 DEF_IMGLIB_FN (TIFFOpen
);
6724 DEF_IMGLIB_FN (TIFFClientOpen
);
6725 DEF_IMGLIB_FN (TIFFGetField
);
6726 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
6727 DEF_IMGLIB_FN (TIFFClose
);
6730 init_tiff_functions (Lisp_Object libraries
)
6734 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6737 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6738 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6739 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6740 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6741 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6742 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6743 LOAD_IMGLIB_FN (library
, TIFFClose
);
6749 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6750 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6751 #define fn_TIFFOpen TIFFOpen
6752 #define fn_TIFFClientOpen TIFFClientOpen
6753 #define fn_TIFFGetField TIFFGetField
6754 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6755 #define fn_TIFFClose TIFFClose
6757 #endif /* HAVE_NTGUI */
6760 /* Reading from a memory buffer for TIFF images Based on the PNG
6761 memory source, but we have to provide a lot of extra functions.
6764 We really only need to implement read and seek, but I am not
6765 convinced that the TIFF library is smart enough not to destroy
6766 itself if we only hand it the function pointers we need to
6771 unsigned char *bytes
;
6778 tiff_read_from_memory (data
, buf
, size
)
6783 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6785 if (size
> src
->len
- src
->index
)
6787 bcopy (src
->bytes
+ src
->index
, buf
, size
);
6793 tiff_write_from_memory (data
, buf
, size
)
6802 tiff_seek_in_memory (data
, off
, whence
)
6807 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6812 case SEEK_SET
: /* Go from beginning of source. */
6816 case SEEK_END
: /* Go from end of source. */
6817 idx
= src
->len
+ off
;
6820 case SEEK_CUR
: /* Go from current position. */
6821 idx
= src
->index
+ off
;
6824 default: /* Invalid `whence'. */
6828 if (idx
> src
->len
|| idx
< 0)
6836 tiff_close_memory (data
)
6844 tiff_mmap_memory (data
, pbase
, psize
)
6849 /* It is already _IN_ memory. */
6854 tiff_unmap_memory (data
, base
, size
)
6859 /* We don't need to do this. */
6863 tiff_size_of_memory (data
)
6866 return ((tiff_memory_source
*) data
)->len
;
6871 tiff_error_handler (title
, format
, ap
)
6872 const char *title
, *format
;
6878 len
= sprintf (buf
, "TIFF error: %s ", title
);
6879 vsprintf (buf
+ len
, format
, ap
);
6880 add_to_log (buf
, Qnil
, Qnil
);
6885 tiff_warning_handler (title
, format
, ap
)
6886 const char *title
, *format
;
6892 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6893 vsprintf (buf
+ len
, format
, ap
);
6894 add_to_log (buf
, Qnil
, Qnil
);
6898 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6906 Lisp_Object file
, specified_file
;
6907 Lisp_Object specified_data
;
6909 int width
, height
, x
, y
;
6913 struct gcpro gcpro1
;
6914 tiff_memory_source memsrc
;
6916 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6917 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6921 fn_TIFFSetErrorHandler (tiff_error_handler
);
6922 fn_TIFFSetWarningHandler (tiff_warning_handler
);
6924 if (NILP (specified_data
))
6926 /* Read from a file */
6927 file
= x_find_image_file (specified_file
);
6928 if (!STRINGP (file
))
6930 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6935 /* Try to open the image file. */
6936 tiff
= fn_TIFFOpen (SDATA (file
), "r");
6939 image_error ("Cannot open `%s'", file
, Qnil
);
6946 /* Memory source! */
6947 memsrc
.bytes
= SDATA (specified_data
);
6948 memsrc
.len
= SBYTES (specified_data
);
6951 tiff
= fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
6952 (TIFFReadWriteProc
) tiff_read_from_memory
,
6953 (TIFFReadWriteProc
) tiff_write_from_memory
,
6954 tiff_seek_in_memory
,
6956 tiff_size_of_memory
,
6962 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6968 /* Get width and height of the image, and allocate a raster buffer
6969 of width x height 32-bit values. */
6970 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6971 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6972 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6974 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6975 fn_TIFFClose (tiff
);
6978 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6984 /* Create the X image and pixmap. */
6985 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6992 /* Initialize the color table. */
6993 init_color_table ();
6995 /* Process the pixel raster. Origin is in the lower-left corner. */
6996 for (y
= 0; y
< height
; ++y
)
6998 uint32
*row
= buf
+ y
* width
;
7000 for (x
= 0; x
< width
; ++x
)
7002 uint32 abgr
= row
[x
];
7003 int r
= TIFFGetR (abgr
) << 8;
7004 int g
= TIFFGetG (abgr
) << 8;
7005 int b
= TIFFGetB (abgr
) << 8;
7006 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
7010 #ifdef COLOR_TABLE_SUPPORT
7011 /* Remember the colors allocated for the image. Free the color table. */
7012 img
->colors
= colors_in_color_table (&img
->ncolors
);
7013 free_color_table ();
7014 #endif /* COLOR_TABLE_SUPPORT */
7017 img
->height
= height
;
7019 /* Maybe fill in the background field while we have ximg handy. */
7020 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7021 IMAGE_BACKGROUND (img
, f
, ximg
);
7023 /* Put the image into the pixmap, then free the X image and its buffer. */
7024 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7025 x_destroy_x_image (ximg
);
7032 #else /* HAVE_TIFF */
7040 return image_load_quicktime (f
, img
, kQTFileTypeTIFF
);
7044 #endif /* !HAVE_TIFF */
7048 /***********************************************************************
7050 ***********************************************************************/
7052 #if defined (HAVE_GIF) || defined (MAC_OS)
7054 static int gif_image_p
P_ ((Lisp_Object object
));
7055 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
7057 /* The symbol `gif' identifying images of this type. */
7061 /* Indices of image specification fields in gif_format, below. */
7063 enum gif_keyword_index
7079 /* Vector of image_keyword structures describing the format
7080 of valid user-defined image specifications. */
7082 static struct image_keyword gif_format
[GIF_LAST
] =
7084 {":type", IMAGE_SYMBOL_VALUE
, 1},
7085 {":data", IMAGE_STRING_VALUE
, 0},
7086 {":file", IMAGE_STRING_VALUE
, 0},
7087 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7088 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7089 {":relief", IMAGE_INTEGER_VALUE
, 0},
7090 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7091 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7092 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7093 {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
7094 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7097 /* Structure describing the image type `gif'. */
7099 static struct image_type gif_type
=
7108 /* Return non-zero if OBJECT is a valid GIF image specification. */
7111 gif_image_p (object
)
7114 struct image_keyword fmt
[GIF_LAST
];
7115 bcopy (gif_format
, fmt
, sizeof fmt
);
7117 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
7120 /* Must specify either the :data or :file keyword. */
7121 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
7124 #endif /* HAVE_GIF || MAC_OS */
7128 #if defined (HAVE_NTGUI) || defined (MAC_OS)
7129 /* avoid conflict with QuickdrawText.h */
7130 #define DrawText gif_DrawText
7131 #include <gif_lib.h>
7134 #else /* HAVE_NTGUI || MAC_OS */
7136 #include <gif_lib.h>
7138 #endif /* HAVE_NTGUI || MAC_OS */
7143 /* GIF library details. */
7144 DEF_IMGLIB_FN (DGifCloseFile
);
7145 DEF_IMGLIB_FN (DGifSlurp
);
7146 DEF_IMGLIB_FN (DGifOpen
);
7147 DEF_IMGLIB_FN (DGifOpenFileName
);
7150 init_gif_functions (Lisp_Object libraries
)
7154 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7157 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7158 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7159 LOAD_IMGLIB_FN (library
, DGifOpen
);
7160 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7166 #define fn_DGifCloseFile DGifCloseFile
7167 #define fn_DGifSlurp DGifSlurp
7168 #define fn_DGifOpen DGifOpen
7169 #define fn_DGifOpenFileName DGifOpenFileName
7171 #endif /* HAVE_NTGUI */
7173 /* Reading a GIF image from memory
7174 Based on the PNG memory stuff to a certain extent. */
7178 unsigned char *bytes
;
7184 /* Make the current memory source available to gif_read_from_memory.
7185 It's done this way because not all versions of libungif support
7186 a UserData field in the GifFileType structure. */
7187 static gif_memory_source
*current_gif_memory_src
;
7190 gif_read_from_memory (file
, buf
, len
)
7195 gif_memory_source
*src
= current_gif_memory_src
;
7197 if (len
> src
->len
- src
->index
)
7200 bcopy (src
->bytes
+ src
->index
, buf
, len
);
7206 /* Load GIF image IMG for use on frame F. Value is non-zero if
7214 Lisp_Object file
, specified_file
;
7215 Lisp_Object specified_data
;
7216 int rc
, width
, height
, x
, y
, i
;
7218 ColorMapObject
*gif_color_map
;
7219 unsigned long pixel_colors
[256];
7221 struct gcpro gcpro1
;
7223 int ino
, image_left
, image_top
, image_width
, image_height
;
7224 gif_memory_source memsrc
;
7225 unsigned char *raster
;
7227 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7228 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7232 if (NILP (specified_data
))
7234 file
= x_find_image_file (specified_file
);
7235 if (!STRINGP (file
))
7237 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7242 /* Open the GIF file. */
7243 gif
= fn_DGifOpenFileName (SDATA (file
));
7246 image_error ("Cannot open `%s'", file
, Qnil
);
7253 /* Read from memory! */
7254 current_gif_memory_src
= &memsrc
;
7255 memsrc
.bytes
= SDATA (specified_data
);
7256 memsrc
.len
= SBYTES (specified_data
);
7259 gif
= fn_DGifOpen(&memsrc
, gif_read_from_memory
);
7262 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7268 /* Read entire contents. */
7269 rc
= fn_DGifSlurp (gif
);
7270 if (rc
== GIF_ERROR
)
7272 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7273 fn_DGifCloseFile (gif
);
7278 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7279 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7280 if (ino
>= gif
->ImageCount
)
7282 image_error ("Invalid image number `%s' in image `%s'",
7284 fn_DGifCloseFile (gif
);
7289 width
= img
->width
= max (gif
->SWidth
, gif
->Image
.Left
+ gif
->Image
.Width
);
7290 height
= img
->height
= max (gif
->SHeight
, gif
->Image
.Top
+ gif
->Image
.Height
);
7292 /* Create the X image and pixmap. */
7293 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7295 fn_DGifCloseFile (gif
);
7300 /* Allocate colors. */
7301 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7303 gif_color_map
= gif
->SColorMap
;
7304 init_color_table ();
7305 bzero (pixel_colors
, sizeof pixel_colors
);
7307 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7309 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7310 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7311 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7312 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7315 #ifdef COLOR_TABLE_SUPPORT
7316 img
->colors
= colors_in_color_table (&img
->ncolors
);
7317 free_color_table ();
7318 #endif /* COLOR_TABLE_SUPPORT */
7320 /* Clear the part of the screen image that are not covered by
7321 the image from the GIF file. Full animated GIF support
7322 requires more than can be done here (see the gif89 spec,
7323 disposal methods). Let's simply assume that the part
7324 not covered by a sub-image is in the frame's background color. */
7325 image_top
= gif
->SavedImages
[ino
].ImageDesc
.Top
;
7326 image_left
= gif
->SavedImages
[ino
].ImageDesc
.Left
;
7327 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7328 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7330 for (y
= 0; y
< image_top
; ++y
)
7331 for (x
= 0; x
< width
; ++x
)
7332 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7334 for (y
= image_top
+ image_height
; y
< height
; ++y
)
7335 for (x
= 0; x
< width
; ++x
)
7336 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7338 for (y
= image_top
; y
< image_top
+ image_height
; ++y
)
7340 for (x
= 0; x
< image_left
; ++x
)
7341 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7342 for (x
= image_left
+ image_width
; x
< width
; ++x
)
7343 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7346 /* Read the GIF image into the X image. We use a local variable
7347 `raster' here because RasterBits below is a char *, and invites
7348 problems with bytes >= 0x80. */
7349 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7351 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7353 static int interlace_start
[] = {0, 4, 2, 1};
7354 static int interlace_increment
[] = {8, 8, 4, 2};
7356 int row
= interlace_start
[0];
7360 for (y
= 0; y
< image_height
; y
++)
7362 if (row
>= image_height
)
7364 row
= interlace_start
[++pass
];
7365 while (row
>= image_height
)
7366 row
= interlace_start
[++pass
];
7369 for (x
= 0; x
< image_width
; x
++)
7371 int i
= raster
[(y
* image_width
) + x
];
7372 XPutPixel (ximg
, x
+ image_left
, row
+ image_top
,
7376 row
+= interlace_increment
[pass
];
7381 for (y
= 0; y
< image_height
; ++y
)
7382 for (x
= 0; x
< image_width
; ++x
)
7384 int i
= raster
[y
* image_width
+ x
];
7385 XPutPixel (ximg
, x
+ image_left
, y
+ image_top
, pixel_colors
[i
]);
7389 fn_DGifCloseFile (gif
);
7391 /* Maybe fill in the background field while we have ximg handy. */
7392 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7393 IMAGE_BACKGROUND (img
, f
, ximg
);
7395 /* Put the image into the pixmap, then free the X image and its buffer. */
7396 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7397 x_destroy_x_image (ximg
);
7411 Lisp_Object specified_file
, file
;
7412 Lisp_Object specified_data
;
7414 Boolean graphic_p
, movie_p
, prefer_graphic_p
;
7422 Lisp_Object specified_bg
;
7428 struct gcpro gcpro1
;
7433 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7434 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7436 if (NILP (specified_data
))
7438 /* Read from a file */
7442 err
= find_image_fsspec (specified_file
, &file
, &fss
);
7446 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7451 err
= CanQuickTimeOpenFile (&fss
, kQTFileTypeGIF
, 0,
7452 &graphic_p
, &movie_p
, &prefer_graphic_p
, 0);
7456 if (!graphic_p
&& !movie_p
)
7458 if (prefer_graphic_p
)
7459 return image_load_qt_1 (f
, img
, kQTFileTypeGIF
, &fss
, NULL
);
7460 err
= OpenMovieFile (&fss
, &refnum
, fsRdPerm
);
7463 err
= NewMovieFromFile (&movie
, refnum
, NULL
, NULL
, 0, NULL
);
7464 CloseMovieFile (refnum
);
7467 image_error ("Error reading `%s'", file
, Qnil
);
7473 /* Memory source! */
7475 long file_type_atom
[3];
7477 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
7480 image_error ("Cannot allocate data handle for `%s'",
7485 file_type_atom
[0] = EndianU32_NtoB (sizeof (long) * 3);
7486 file_type_atom
[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType
);
7487 file_type_atom
[2] = EndianU32_NtoB (kQTFileTypeGIF
);
7488 err
= PtrToHand (&dh
, &dref
, sizeof (Handle
));
7491 err
= PtrAndHand ("\p", dref
, 1);
7493 err
= PtrAndHand (file_type_atom
, dref
, sizeof (long) * 3);
7496 image_error ("Cannot allocate handle data ref for `%s'", img
->spec
, Qnil
);
7499 err
= CanQuickTimeOpenDataRef (dref
, HandleDataHandlerSubType
, &graphic_p
,
7500 &movie_p
, &prefer_graphic_p
, 0);
7504 if (!graphic_p
&& !movie_p
)
7506 if (prefer_graphic_p
)
7510 DisposeHandle (dref
);
7511 success_p
= image_load_qt_1 (f
, img
, kQTFileTypeGIF
, NULL
, dh
);
7515 err
= NewMovieFromDataRef (&movie
, 0, NULL
, dref
,
7516 HandleDataHandlerSubType
);
7517 DisposeHandle (dref
);
7522 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7523 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7524 track
= GetMovieIndTrack (movie
, 1);
7525 media
= GetTrackMedia (track
);
7526 nsamples
= GetMediaSampleCount (media
);
7527 if (ino
>= nsamples
)
7529 image_error ("Invalid image number `%s' in image `%s'",
7534 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
7535 if (!STRINGP (specified_bg
) ||
7536 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
7538 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
7539 color
.red
= RED16_FROM_ULONG (color
.pixel
);
7540 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
7541 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
7543 GetMovieBox (movie
, &rect
);
7544 width
= img
->width
= rect
.right
- rect
.left
;
7545 height
= img
->height
= rect
.bottom
- rect
.top
;
7546 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7549 GetGWorld (&old_port
, &old_gdh
);
7550 SetGWorld (ximg
, NULL
);
7551 bg_color
.red
= color
.red
;
7552 bg_color
.green
= color
.green
;
7553 bg_color
.blue
= color
.blue
;
7554 RGBBackColor (&bg_color
);
7555 SetGWorld (old_port
, old_gdh
);
7556 SetMovieActive (movie
, TRUE
);
7557 SetMovieGWorld (movie
, ximg
, NULL
);
7558 SampleNumToMediaTime (media
, ino
+ 1, &time
, NULL
);
7559 SetMovieTimeValue (movie
, time
);
7560 MoviesTask (movie
, 0L);
7561 DisposeTrackMedia (media
);
7562 DisposeMovieTrack (track
);
7563 DisposeMovie (movie
);
7566 /* Maybe fill in the background field while we have ximg handy. */
7567 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7568 IMAGE_BACKGROUND (img
, f
, ximg
);
7570 /* Put the image into the pixmap. */
7571 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7572 x_destroy_x_image (ximg
);
7576 image_error ("Cannot open `%s'", file
, Qnil
);
7579 DisposeTrackMedia (media
);
7581 DisposeMovieTrack (track
);
7583 DisposeMovie (movie
);
7590 #endif /* HAVE_GIF */
7594 /***********************************************************************
7596 ***********************************************************************/
7598 #ifdef HAVE_X_WINDOWS
7599 #define HAVE_GHOSTSCRIPT 1
7600 #endif /* HAVE_X_WINDOWS */
7602 /* The symbol `postscript' identifying images of this type. */
7604 Lisp_Object Qpostscript
;
7606 #ifdef HAVE_GHOSTSCRIPT
7608 static int gs_image_p
P_ ((Lisp_Object object
));
7609 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
7610 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7612 /* Keyword symbols. */
7614 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
7616 /* Indices of image specification fields in gs_format, below. */
7618 enum gs_keyword_index
7636 /* Vector of image_keyword structures describing the format
7637 of valid user-defined image specifications. */
7639 static struct image_keyword gs_format
[GS_LAST
] =
7641 {":type", IMAGE_SYMBOL_VALUE
, 1},
7642 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7643 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7644 {":file", IMAGE_STRING_VALUE
, 1},
7645 {":loader", IMAGE_FUNCTION_VALUE
, 0},
7646 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
7647 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7648 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7649 {":relief", IMAGE_INTEGER_VALUE
, 0},
7650 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7651 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7652 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7653 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7656 /* Structure describing the image type `ghostscript'. */
7658 static struct image_type gs_type
=
7668 /* Free X resources of Ghostscript image IMG which is used on frame F. */
7671 gs_clear_image (f
, img
)
7675 /* IMG->data.ptr_val may contain a recorded colormap. */
7676 xfree (img
->data
.ptr_val
);
7677 x_clear_image (f
, img
);
7681 /* Return non-zero if OBJECT is a valid Ghostscript image
7688 struct image_keyword fmt
[GS_LAST
];
7692 bcopy (gs_format
, fmt
, sizeof fmt
);
7694 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
7697 /* Bounding box must be a list or vector containing 4 integers. */
7698 tem
= fmt
[GS_BOUNDING_BOX
].value
;
7701 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
7702 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
7707 else if (VECTORP (tem
))
7709 if (XVECTOR (tem
)->size
!= 4)
7711 for (i
= 0; i
< 4; ++i
)
7712 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
7722 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
7731 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
7732 struct gcpro gcpro1
, gcpro2
;
7734 double in_width
, in_height
;
7735 Lisp_Object pixel_colors
= Qnil
;
7737 /* Compute pixel size of pixmap needed from the given size in the
7738 image specification. Sizes in the specification are in pt. 1 pt
7739 = 1/72 in, xdpi and ydpi are stored in the frame's X display
7741 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
7742 in_width
= XFASTINT (pt_width
) / 72.0;
7743 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
7744 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
7745 in_height
= XFASTINT (pt_height
) / 72.0;
7746 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
7748 /* Create the pixmap. */
7749 xassert (img
->pixmap
== NO_PIXMAP
);
7751 /* Only W32 version did BLOCK_INPUT here. ++kfs */
7753 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
7754 img
->width
, img
->height
,
7755 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
7760 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
7764 /* Call the loader to fill the pixmap. It returns a process object
7765 if successful. We do not record_unwind_protect here because
7766 other places in redisplay like calling window scroll functions
7767 don't either. Let the Lisp loader use `unwind-protect' instead. */
7768 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
7770 sprintf (buffer
, "%lu %lu",
7771 (unsigned long) FRAME_X_WINDOW (f
),
7772 (unsigned long) img
->pixmap
);
7773 window_and_pixmap_id
= build_string (buffer
);
7775 sprintf (buffer
, "%lu %lu",
7776 FRAME_FOREGROUND_PIXEL (f
),
7777 FRAME_BACKGROUND_PIXEL (f
));
7778 pixel_colors
= build_string (buffer
);
7780 XSETFRAME (frame
, f
);
7781 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
7783 loader
= intern ("gs-load-image");
7785 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
7786 make_number (img
->width
),
7787 make_number (img
->height
),
7788 window_and_pixmap_id
,
7791 return PROCESSP (img
->data
.lisp_val
);
7795 /* Kill the Ghostscript process that was started to fill PIXMAP on
7796 frame F. Called from XTread_socket when receiving an event
7797 telling Emacs that Ghostscript has finished drawing. */
7800 x_kill_gs_process (pixmap
, f
)
7804 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
7808 /* Find the image containing PIXMAP. */
7809 for (i
= 0; i
< c
->used
; ++i
)
7810 if (c
->images
[i
]->pixmap
== pixmap
)
7813 /* Should someone in between have cleared the image cache, for
7814 instance, give up. */
7818 /* Kill the GS process. We should have found PIXMAP in the image
7819 cache and its image should contain a process object. */
7821 xassert (PROCESSP (img
->data
.lisp_val
));
7822 Fkill_process (img
->data
.lisp_val
, Qnil
);
7823 img
->data
.lisp_val
= Qnil
;
7825 #if defined (HAVE_X_WINDOWS)
7827 /* On displays with a mutable colormap, figure out the colors
7828 allocated for the image by looking at the pixels of an XImage for
7830 class = FRAME_X_VISUAL (f
)->class;
7831 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
7837 /* Try to get an XImage for img->pixmep. */
7838 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
7839 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
7844 /* Initialize the color table. */
7845 init_color_table ();
7847 /* For each pixel of the image, look its color up in the
7848 color table. After having done so, the color table will
7849 contain an entry for each color used by the image. */
7850 for (y
= 0; y
< img
->height
; ++y
)
7851 for (x
= 0; x
< img
->width
; ++x
)
7853 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
7854 lookup_pixel_color (f
, pixel
);
7857 /* Record colors in the image. Free color table and XImage. */
7858 #ifdef COLOR_TABLE_SUPPORT
7859 img
->colors
= colors_in_color_table (&img
->ncolors
);
7860 free_color_table ();
7862 XDestroyImage (ximg
);
7864 #if 0 /* This doesn't seem to be the case. If we free the colors
7865 here, we get a BadAccess later in x_clear_image when
7866 freeing the colors. */
7867 /* We have allocated colors once, but Ghostscript has also
7868 allocated colors on behalf of us. So, to get the
7869 reference counts right, free them once. */
7871 x_free_colors (f
, img
->colors
, img
->ncolors
);
7875 image_error ("Cannot get X image of `%s'; colors will not be freed",
7880 #endif /* HAVE_X_WINDOWS */
7882 /* Now that we have the pixmap, compute mask and transform the
7883 image if requested. */
7885 postprocess_image (f
, img
);
7889 #endif /* HAVE_GHOSTSCRIPT */
7892 /***********************************************************************
7894 ***********************************************************************/
7898 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
7899 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
7903 return valid_image_p (spec
) ? Qt
: Qnil
;
7907 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
7913 if (valid_image_p (spec
))
7914 id
= lookup_image (SELECTED_FRAME (), spec
);
7917 return make_number (id
);
7920 #endif /* GLYPH_DEBUG != 0 */
7923 /***********************************************************************
7925 ***********************************************************************/
7928 /* Image types that rely on external libraries are loaded dynamically
7929 if the library is available. */
7930 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
7931 define_image_type (image_type, init_lib_fn (libraries))
7933 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
7934 define_image_type (image_type, TRUE)
7935 #endif /* HAVE_NTGUI */
7937 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
7938 doc
: /* Initialize image library implementing image type TYPE.
7939 Return non-nil if TYPE is a supported image type.
7941 Image types pbm and xbm are prebuilt; other types are loaded here.
7942 Libraries to load are specified in alist LIBRARIES (usually, the value
7943 of `image-library-alist', which see). */)
7945 Lisp_Object type
, libraries
;
7949 /* Don't try to reload the library. */
7950 tested
= Fassq (type
, Vimage_type_cache
);
7952 return XCDR (tested
);
7954 #if defined (HAVE_XPM) || defined (MAC_OS)
7955 if (EQ (type
, Qxpm
))
7956 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
7959 #if defined (HAVE_JPEG) || defined (MAC_OS)
7960 if (EQ (type
, Qjpeg
))
7961 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
7964 #if defined (HAVE_TIFF) || defined (MAC_OS)
7965 if (EQ (type
, Qtiff
))
7966 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
7969 #if defined (HAVE_GIF) || defined (MAC_OS)
7970 if (EQ (type
, Qgif
))
7971 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
7974 #if defined (HAVE_PNG) || defined (MAC_OS)
7975 if (EQ (type
, Qpng
))
7976 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
7979 #ifdef HAVE_GHOSTSCRIPT
7980 if (EQ (type
, Qpostscript
))
7981 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
7984 /* If the type is not recognized, avoid testing it ever again. */
7985 CACHE_IMAGE_TYPE (type
, Qnil
);
7992 /* Must be defined now becase we're going to update it below, while
7993 defining the supported image types. */
7994 DEFVAR_LISP ("image-types", &Vimage_types
,
7995 doc
: /* List of potentially supported image types.
7996 Each element of the list is a symbol for a image type, like 'jpeg or 'png.
7997 To check whether it is really supported, use `image-type-available-p'. */);
7998 Vimage_types
= Qnil
;
8000 Vimage_type_cache
= Qnil
;
8001 staticpro (&Vimage_type_cache
);
8003 QCascent
= intern (":ascent");
8004 staticpro (&QCascent
);
8005 QCmargin
= intern (":margin");
8006 staticpro (&QCmargin
);
8007 QCrelief
= intern (":relief");
8008 staticpro (&QCrelief
);
8009 QCconversion
= intern (":conversion");
8010 staticpro (&QCconversion
);
8011 QCcolor_symbols
= intern (":color-symbols");
8012 staticpro (&QCcolor_symbols
);
8013 QCheuristic_mask
= intern (":heuristic-mask");
8014 staticpro (&QCheuristic_mask
);
8015 QCindex
= intern (":index");
8016 staticpro (&QCindex
);
8017 QCmatrix
= intern (":matrix");
8018 staticpro (&QCmatrix
);
8019 QCcolor_adjustment
= intern (":color-adjustment");
8020 staticpro (&QCcolor_adjustment
);
8021 QCmask
= intern (":mask");
8022 staticpro (&QCmask
);
8024 Qlaplace
= intern ("laplace");
8025 staticpro (&Qlaplace
);
8026 Qemboss
= intern ("emboss");
8027 staticpro (&Qemboss
);
8028 Qedge_detection
= intern ("edge-detection");
8029 staticpro (&Qedge_detection
);
8030 Qheuristic
= intern ("heuristic");
8031 staticpro (&Qheuristic
);
8033 Qpostscript
= intern ("postscript");
8034 staticpro (&Qpostscript
);
8035 #ifdef HAVE_GHOSTSCRIPT
8036 ADD_IMAGE_TYPE(Qpostscript
);
8037 QCloader
= intern (":loader");
8038 staticpro (&QCloader
);
8039 QCbounding_box
= intern (":bounding-box");
8040 staticpro (&QCbounding_box
);
8041 QCpt_width
= intern (":pt-width");
8042 staticpro (&QCpt_width
);
8043 QCpt_height
= intern (":pt-height");
8044 staticpro (&QCpt_height
);
8045 #endif /* HAVE_GHOSTSCRIPT */
8047 Qpbm
= intern ("pbm");
8049 ADD_IMAGE_TYPE(Qpbm
);
8051 Qxbm
= intern ("xbm");
8053 ADD_IMAGE_TYPE(Qxbm
);
8055 #if defined (HAVE_XPM) || defined (MAC_OS)
8056 Qxpm
= intern ("xpm");
8058 ADD_IMAGE_TYPE(Qxpm
);
8061 #if defined (HAVE_JPEG) || defined (MAC_OS)
8062 Qjpeg
= intern ("jpeg");
8064 ADD_IMAGE_TYPE(Qjpeg
);
8067 #if defined (HAVE_TIFF) || defined (MAC_OS)
8068 Qtiff
= intern ("tiff");
8070 ADD_IMAGE_TYPE(Qtiff
);
8073 #if defined (HAVE_GIF) || defined (MAC_OS)
8074 Qgif
= intern ("gif");
8076 ADD_IMAGE_TYPE(Qgif
);
8079 #if defined (HAVE_PNG) || defined (MAC_OS)
8080 Qpng
= intern ("png");
8082 ADD_IMAGE_TYPE(Qpng
);
8085 defsubr (&Sinit_image_library
);
8086 defsubr (&Sclear_image_cache
);
8087 defsubr (&Simage_size
);
8088 defsubr (&Simage_mask_p
);
8092 defsubr (&Slookup_image
);
8095 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
8096 doc
: /* Non-nil means always draw a cross over disabled images.
8097 Disabled images are those having an `:conversion disabled' property.
8098 A cross is always drawn on black & white displays. */);
8099 cross_disabled_images
= 0;
8101 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
8102 doc
: /* List of directories to search for window system bitmap files. */);
8103 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8105 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
8106 doc
: /* Time after which cached images are removed from the cache.
8107 When an image has not been displayed this many seconds, remove it
8108 from the image cache. Value must be an integer or nil with nil
8109 meaning don't clear the cache. */);
8110 Vimage_cache_eviction_delay
= make_number (30 * 60);
8118 define_image_type (&xbm_type
, TRUE
);
8119 define_image_type (&pbm_type
, TRUE
);
8122 /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */
8125 init_image_func_pointer ();
8130 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
8131 (do not change this comment) */