1 /* Functions for image support on window system.
2 Copyright (C) 1989, 1992-2011 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #if defined HAVE_LIBPNG_PNG_H
27 # include <libpng/png.h>
35 /* This makes the fields of a Display accessible, in Xlib header files. */
37 #define XLIB_ILLEGAL_ACCESS
42 #include "dispextern.h"
43 #include "blockinput.h"
46 #include "character.h"
48 #include "termhooks.h"
53 #include <sys/types.h>
56 #define COLOR_TABLE_SUPPORT 1
58 typedef struct x_bitmap_record Bitmap_Record
;
59 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
60 #define NO_PIXMAP None
62 #define RGB_PIXEL_COLOR unsigned long
64 #define PIX_MASK_RETAIN 0
65 #define PIX_MASK_DRAW 1
66 #endif /* HAVE_X_WINDOWS */
73 /* W32_TODO : Color tables on W32. */
74 #undef COLOR_TABLE_SUPPORT
76 typedef struct w32_bitmap_record Bitmap_Record
;
77 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
80 #define RGB_PIXEL_COLOR COLORREF
82 #define PIX_MASK_RETAIN 0
83 #define PIX_MASK_DRAW 1
85 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
86 #define x_defined_color w32_defined_color
87 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
89 /* Functions from w32term.c that depend on XColor (so can't go in w32term.h
90 without modifying lots of files). */
91 extern void x_query_colors (struct frame
*f
, XColor
*colors
, int ncolors
);
92 extern void x_query_color (struct frame
*f
, XColor
*color
);
94 /* Version of libpng that we were compiled with, or -1 if no PNG
95 support was compiled in. This is tested by w32-win.el to correctly
96 set up the alist used to search for PNG libraries. */
97 Lisp_Object Qlibpng_version
;
98 #endif /* HAVE_NTGUI */
102 #include <sys/types.h>
103 #include <sys/stat.h>
105 #undef COLOR_TABLE_SUPPORT
107 typedef struct ns_bitmap_record Bitmap_Record
;
109 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
112 #define RGB_PIXEL_COLOR unsigned long
115 #define PIX_MASK_RETAIN 0
116 #define PIX_MASK_DRAW 1
118 #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual
119 #define x_defined_color(f, name, color_def, alloc) \
120 ns_defined_color (f, name, color_def, alloc, 0)
121 #define FRAME_X_SCREEN(f) 0
122 #define DefaultDepthOfScreen(screen) x_display_list->n_planes
126 /* The symbol `postscript' identifying images of this type. */
128 static Lisp_Object Qpostscript
;
130 static void x_disable_image (struct frame
*, struct image
*);
131 static void x_edge_detection (struct frame
*, struct image
*, Lisp_Object
,
134 static void init_color_table (void);
135 static unsigned long lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
);
136 #ifdef COLOR_TABLE_SUPPORT
137 static void free_color_table (void);
138 static unsigned long *colors_in_color_table (int *n
);
139 static unsigned long lookup_pixel_color (struct frame
*f
, unsigned long p
);
141 static Lisp_Object
Finit_image_library (Lisp_Object
, Lisp_Object
);
143 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
144 id, which is just an int that this section returns. Bitmaps are
145 reference counted so they can be shared among frames.
147 Bitmap indices are guaranteed to be > 0, so a negative number can
148 be used to indicate no bitmap.
150 If you use x_create_bitmap_from_data, then you must keep track of
151 the bitmaps yourself. That is, creating a bitmap from the same
152 data more than once will not be caught. */
156 XGetImage (Display
*display
, Pixmap pixmap
, int x
, int y
,
157 unsigned int width
, unsigned int height
,
158 unsigned long plane_mask
, int format
)
160 /* TODO: not sure what this function is supposed to do.. */
161 ns_retain_object (pixmap
);
165 /* use with imgs created by ns_image_for_XPM */
167 XGetPixel (XImagePtr ximage
, int x
, int y
)
169 return ns_get_pixel (ximage
, x
, y
);
172 /* use with imgs created by ns_image_for_XPM; alpha set to 1;
173 pixel is assumed to be in form RGB */
175 XPutPixel (XImagePtr ximage
, int x
, int y
, unsigned long pixel
)
177 ns_put_pixel (ximage
, x
, y
, pixel
);
182 /* Functions to access the contents of a bitmap, given an id. */
185 x_bitmap_height (FRAME_PTR f
, int id
)
187 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
191 x_bitmap_width (FRAME_PTR f
, int id
)
193 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
196 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
198 x_bitmap_pixmap (FRAME_PTR f
, int id
)
200 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
204 #ifdef HAVE_X_WINDOWS
206 x_bitmap_mask (FRAME_PTR f
, int id
)
208 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
212 /* Allocate a new bitmap record. Returns index of new record. */
215 x_allocate_bitmap_record (FRAME_PTR f
)
217 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
220 if (dpyinfo
->bitmaps
== NULL
)
222 dpyinfo
->bitmaps_size
= 10;
224 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
225 dpyinfo
->bitmaps_last
= 1;
229 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
230 return ++dpyinfo
->bitmaps_last
;
232 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
233 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
236 dpyinfo
->bitmaps_size
*= 2;
238 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
239 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
240 return ++dpyinfo
->bitmaps_last
;
243 /* Add one reference to the reference count of the bitmap with id ID. */
246 x_reference_bitmap (FRAME_PTR f
, int id
)
248 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
251 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
254 x_create_bitmap_from_data (struct frame
*f
, char *bits
, unsigned int width
, unsigned int height
)
256 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
259 #ifdef HAVE_X_WINDOWS
261 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
262 bits
, width
, height
);
265 #endif /* HAVE_X_WINDOWS */
269 bitmap
= CreateBitmap (width
, height
,
270 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
271 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
275 #endif /* HAVE_NTGUI */
278 void *bitmap
= ns_image_from_XBM (bits
, width
, height
);
283 id
= x_allocate_bitmap_record (f
);
286 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
287 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
290 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
291 dpyinfo
->bitmaps
[id
- 1].height
= height
;
292 dpyinfo
->bitmaps
[id
- 1].width
= width
;
293 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
295 #ifdef HAVE_X_WINDOWS
296 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
297 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
298 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
299 #endif /* HAVE_X_WINDOWS */
302 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
303 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
304 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
305 #endif /* HAVE_NTGUI */
310 /* Create bitmap from file FILE for frame F. */
313 x_create_bitmap_from_file (struct frame
*f
, Lisp_Object file
)
315 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
318 return -1; /* W32_TODO : bitmap support */
319 #endif /* HAVE_NTGUI */
323 void *bitmap
= ns_image_from_file (file
);
329 id
= x_allocate_bitmap_record (f
);
330 dpyinfo
->bitmaps
[id
- 1].img
= bitmap
;
331 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
332 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
333 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
334 dpyinfo
->bitmaps
[id
- 1].height
= ns_image_width (bitmap
);
335 dpyinfo
->bitmaps
[id
- 1].width
= ns_image_height (bitmap
);
336 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
340 #ifdef HAVE_X_WINDOWS
341 unsigned int width
, height
;
343 int xhot
, yhot
, result
, id
;
348 /* Look for an existing bitmap with the same name. */
349 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
351 if (dpyinfo
->bitmaps
[id
].refcount
352 && dpyinfo
->bitmaps
[id
].file
353 && !strcmp (dpyinfo
->bitmaps
[id
].file
, SSDATA (file
)))
355 ++dpyinfo
->bitmaps
[id
].refcount
;
360 /* Search bitmap-file-path for the file, if appropriate. */
361 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
366 filename
= SSDATA (found
);
368 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
369 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
370 if (result
!= BitmapSuccess
)
373 id
= x_allocate_bitmap_record (f
);
374 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
375 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
376 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
377 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
378 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
379 dpyinfo
->bitmaps
[id
- 1].height
= height
;
380 dpyinfo
->bitmaps
[id
- 1].width
= width
;
381 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SSDATA (file
));
384 #endif /* HAVE_X_WINDOWS */
390 free_bitmap_record (Display_Info
*dpyinfo
, Bitmap_Record
*bm
)
392 #ifdef HAVE_X_WINDOWS
393 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
395 XFreePixmap (dpyinfo
->display
, bm
->mask
);
396 #endif /* HAVE_X_WINDOWS */
399 DeleteObject (bm
->pixmap
);
400 #endif /* HAVE_NTGUI */
403 ns_release_object (bm
->img
);
413 /* Remove reference to bitmap with id number ID. */
416 x_destroy_bitmap (FRAME_PTR f
, int id
)
418 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
422 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
424 if (--bm
->refcount
== 0)
427 free_bitmap_record (dpyinfo
, bm
);
433 /* Free all the bitmaps for the display specified by DPYINFO. */
436 x_destroy_all_bitmaps (Display_Info
*dpyinfo
)
439 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
441 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
442 if (bm
->refcount
> 0)
443 free_bitmap_record (dpyinfo
, bm
);
445 dpyinfo
->bitmaps_last
= 0;
449 #ifdef HAVE_X_WINDOWS
451 /* Useful functions defined in the section
452 `Image type independent image structures' below. */
454 static unsigned long four_corners_best (XImagePtr ximg
,
457 unsigned long height
);
459 static int x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
,
460 int depth
, XImagePtr
*ximg
,
463 static void x_destroy_x_image (XImagePtr ximg
);
466 /* Create a mask of a bitmap. Note is this not a perfect mask.
467 It's nicer with some borders in this context */
470 x_create_bitmap_mask (struct frame
*f
, int id
)
473 XImagePtr ximg
, mask_img
;
474 unsigned long width
, height
;
477 unsigned long x
, y
, xp
, xm
, yp
, ym
;
480 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
485 pixmap
= x_bitmap_pixmap (f
, id
);
486 width
= x_bitmap_width (f
, id
);
487 height
= x_bitmap_height (f
, id
);
490 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
499 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
504 XDestroyImage (ximg
);
508 bg
= four_corners_best (ximg
, NULL
, width
, height
);
510 for (y
= 0; y
< ximg
->height
; ++y
)
512 for (x
= 0; x
< ximg
->width
; ++x
)
514 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
515 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
516 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
517 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
518 if (XGetPixel (ximg
, x
, y
) == bg
519 && XGetPixel (ximg
, x
, yp
) == bg
520 && XGetPixel (ximg
, x
, ym
) == bg
521 && XGetPixel (ximg
, xp
, y
) == bg
522 && XGetPixel (ximg
, xp
, yp
) == bg
523 && XGetPixel (ximg
, xp
, ym
) == bg
524 && XGetPixel (ximg
, xm
, y
) == bg
525 && XGetPixel (ximg
, xm
, yp
) == bg
526 && XGetPixel (ximg
, xm
, ym
) == bg
)
527 XPutPixel (mask_img
, x
, y
, 0);
529 XPutPixel (mask_img
, x
, y
, 1);
533 xassert (interrupt_input_blocked
);
534 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
535 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
537 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
539 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
540 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
542 XDestroyImage (ximg
);
543 x_destroy_x_image (mask_img
);
548 #endif /* HAVE_X_WINDOWS */
551 /***********************************************************************
553 ***********************************************************************/
555 /* List of supported image types. Use define_image_type to add new
556 types. Use lookup_image_type to find a type for a given symbol. */
558 static struct image_type
*image_types
;
560 /* The symbol `xbm' which is used as the type symbol for XBM images. */
562 static Lisp_Object Qxbm
;
566 Lisp_Object QCascent
, QCmargin
, QCrelief
;
567 static Lisp_Object Qcount
, Qextension_data
;
568 Lisp_Object QCconversion
;
569 static Lisp_Object QCheuristic_mask
;
570 static Lisp_Object QCcolor_symbols
;
571 static Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
, QCgeometry
;
572 static Lisp_Object QCcrop
, QCrotation
;
576 static Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
578 /* Function prototypes. */
580 static Lisp_Object
define_image_type (struct image_type
*type
, int loaded
);
581 static struct image_type
*lookup_image_type (Lisp_Object symbol
);
582 static void image_error (const char *format
, Lisp_Object
, Lisp_Object
);
583 static void x_laplace (struct frame
*, struct image
*);
584 static void x_emboss (struct frame
*, struct image
*);
585 static int x_build_heuristic_mask (struct frame
*, struct image
*,
588 #define CACHE_IMAGE_TYPE(type, status) \
589 do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0)
591 #define CACHE_IMAGE_TYPE(type, status)
594 #define ADD_IMAGE_TYPE(type) \
595 do { Vimage_types = Fcons (type, Vimage_types); } while (0)
597 /* Define a new image type from TYPE. This adds a copy of TYPE to
598 image_types and caches the loading status of TYPE. */
601 define_image_type (struct image_type
*type
, int loaded
)
609 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
610 The initialized data segment is read-only. */
611 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
612 memcpy (p
, type
, sizeof *p
);
613 p
->next
= image_types
;
618 CACHE_IMAGE_TYPE (*type
->type
, success
);
623 /* Look up image type SYMBOL, and return a pointer to its image_type
624 structure. Value is null if SYMBOL is not a known image type. */
626 static inline struct image_type
*
627 lookup_image_type (Lisp_Object symbol
)
629 struct image_type
*type
;
631 /* We must initialize the image-type if it hasn't been already. */
632 if (NILP (Finit_image_library (symbol
, Vdynamic_library_alist
)))
633 return 0; /* unimplemented */
635 for (type
= image_types
; type
; type
= type
->next
)
636 if (EQ (symbol
, *type
->type
))
643 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
644 valid image specification is a list whose car is the symbol
645 `image', and whose rest is a property list. The property list must
646 contain a value for key `:type'. That value must be the name of a
647 supported image type. The rest of the property list depends on the
651 valid_image_p (Lisp_Object object
)
659 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
660 if (EQ (XCAR (tem
), QCtype
))
663 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
665 struct image_type
*type
;
666 type
= lookup_image_type (XCAR (tem
));
668 valid_p
= type
->valid_p (object
);
679 /* Log error message with format string FORMAT and argument ARG.
680 Signaling an error, e.g. when an image cannot be loaded, is not a
681 good idea because this would interrupt redisplay, and the error
682 message display would lead to another redisplay. This function
683 therefore simply displays a message. */
686 image_error (const char *format
, Lisp_Object arg1
, Lisp_Object arg2
)
688 add_to_log (format
, arg1
, arg2
);
693 /***********************************************************************
695 ***********************************************************************/
697 enum image_value_type
699 IMAGE_DONT_CHECK_VALUE_TYPE
,
701 IMAGE_STRING_OR_NIL_VALUE
,
703 IMAGE_POSITIVE_INTEGER_VALUE
,
704 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
705 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
708 IMAGE_FUNCTION_VALUE
,
713 /* Structure used when parsing image specifications. */
717 /* Name of keyword. */
720 /* The type of value allowed. */
721 enum image_value_type type
;
723 /* Non-zero means key must be present. */
726 /* Used to recognize duplicate keywords in a property list. */
729 /* The value that was found. */
734 static int parse_image_spec (Lisp_Object
, struct image_keyword
*,
736 static Lisp_Object
image_spec_value (Lisp_Object
, Lisp_Object
, int *);
739 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
740 has the format (image KEYWORD VALUE ...). One of the keyword/
741 value pairs must be `:type TYPE'. KEYWORDS is a vector of
742 image_keywords structures of size NKEYWORDS describing other
743 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
746 parse_image_spec (Lisp_Object spec
, struct image_keyword
*keywords
,
747 int nkeywords
, Lisp_Object type
)
756 while (CONSP (plist
))
758 Lisp_Object key
, value
;
760 /* First element of a pair must be a symbol. */
762 plist
= XCDR (plist
);
766 /* There must follow a value. */
769 value
= XCAR (plist
);
770 plist
= XCDR (plist
);
772 /* Find key in KEYWORDS. Error if not found. */
773 for (i
= 0; i
< nkeywords
; ++i
)
774 if (strcmp (keywords
[i
].name
, SSDATA (SYMBOL_NAME (key
))) == 0)
780 /* Record that we recognized the keyword. If a keywords
781 was found more than once, it's an error. */
782 keywords
[i
].value
= value
;
785 if (keywords
[i
].count
> 1)
788 /* Check type of value against allowed type. */
789 switch (keywords
[i
].type
)
791 case IMAGE_STRING_VALUE
:
792 if (!STRINGP (value
))
796 case IMAGE_STRING_OR_NIL_VALUE
:
797 if (!STRINGP (value
) && !NILP (value
))
801 case IMAGE_SYMBOL_VALUE
:
802 if (!SYMBOLP (value
))
806 case IMAGE_POSITIVE_INTEGER_VALUE
:
807 if (!INTEGERP (value
) || XINT (value
) <= 0)
811 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
812 if (INTEGERP (value
) && XINT (value
) >= 0)
815 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
816 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
820 case IMAGE_ASCENT_VALUE
:
821 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
823 else if (INTEGERP (value
)
825 && XINT (value
) <= 100)
829 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
830 if (!INTEGERP (value
) || XINT (value
) < 0)
834 case IMAGE_DONT_CHECK_VALUE_TYPE
:
837 case IMAGE_FUNCTION_VALUE
:
838 value
= indirect_function (value
);
839 if (!NILP (Ffunctionp (value
)))
843 case IMAGE_NUMBER_VALUE
:
844 if (!INTEGERP (value
) && !FLOATP (value
))
848 case IMAGE_INTEGER_VALUE
:
849 if (!INTEGERP (value
))
853 case IMAGE_BOOL_VALUE
:
854 if (!NILP (value
) && !EQ (value
, Qt
))
863 if (EQ (key
, QCtype
) && !EQ (type
, value
))
867 /* Check that all mandatory fields are present. */
868 for (i
= 0; i
< nkeywords
; ++i
)
869 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
876 /* Return the value of KEY in image specification SPEC. Value is nil
877 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
878 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
881 image_spec_value (Lisp_Object spec
, Lisp_Object key
, int *found
)
885 xassert (valid_image_p (spec
));
887 for (tail
= XCDR (spec
);
888 CONSP (tail
) && CONSP (XCDR (tail
));
889 tail
= XCDR (XCDR (tail
)))
891 if (EQ (XCAR (tail
), key
))
895 return XCAR (XCDR (tail
));
905 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
906 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
907 PIXELS non-nil means return the size in pixels, otherwise return the
908 size in canonical character units.
909 FRAME is the frame on which the image will be displayed. FRAME nil
910 or omitted means use the selected frame. */)
911 (Lisp_Object spec
, Lisp_Object pixels
, Lisp_Object frame
)
916 if (valid_image_p (spec
))
918 struct frame
*f
= check_x_frame (frame
);
919 int id
= lookup_image (f
, spec
);
920 struct image
*img
= IMAGE_FROM_ID (f
, id
);
921 int width
= img
->width
+ 2 * img
->hmargin
;
922 int height
= img
->height
+ 2 * img
->vmargin
;
925 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
926 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
928 size
= Fcons (make_number (width
), make_number (height
));
931 error ("Invalid image specification");
937 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
938 doc
: /* Return t if image SPEC has a mask bitmap.
939 FRAME is the frame on which the image will be displayed. FRAME nil
940 or omitted means use the selected frame. */)
941 (Lisp_Object spec
, Lisp_Object frame
)
946 if (valid_image_p (spec
))
948 struct frame
*f
= check_x_frame (frame
);
949 int id
= lookup_image (f
, spec
);
950 struct image
*img
= IMAGE_FROM_ID (f
, id
);
955 error ("Invalid image specification");
960 DEFUN ("image-metadata", Fimage_metadata
, Simage_metadata
, 1, 2, 0,
961 doc
: /* Return metadata for image SPEC.
962 FRAME is the frame on which the image will be displayed. FRAME nil
963 or omitted means use the selected frame. */)
964 (Lisp_Object spec
, Lisp_Object frame
)
969 if (valid_image_p (spec
))
971 struct frame
*f
= check_x_frame (frame
);
972 int id
= lookup_image (f
, spec
);
973 struct image
*img
= IMAGE_FROM_ID (f
, id
);
974 ext
= img
->data
.lisp_val
;
981 /***********************************************************************
982 Image type independent image structures
983 ***********************************************************************/
985 static void free_image (struct frame
*f
, struct image
*img
);
986 static int check_image_size (struct frame
*f
, int width
, int height
);
988 #define MAX_IMAGE_SIZE 6.0
989 /* Allocate and return a new image structure for image specification
990 SPEC. SPEC has a hash value of HASH. */
992 static struct image
*
993 make_image (Lisp_Object spec
, EMACS_UINT hash
)
995 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
996 Lisp_Object file
= image_spec_value (spec
, QCfile
, NULL
);
998 xassert (valid_image_p (spec
));
999 memset (img
, 0, sizeof *img
);
1000 img
->dependencies
= NILP (file
) ? Qnil
: list1 (file
);
1001 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1002 xassert (img
->type
!= NULL
);
1004 img
->data
.lisp_val
= Qnil
;
1005 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1007 img
->corners
[BOT_CORNER
] = -1; /* Full image */
1012 /* Free image IMG which was used on frame F, including its resources. */
1015 free_image (struct frame
*f
, struct image
*img
)
1019 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1021 /* Remove IMG from the hash table of its cache. */
1023 img
->prev
->next
= img
->next
;
1025 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1028 img
->next
->prev
= img
->prev
;
1030 c
->images
[img
->id
] = NULL
;
1032 /* Free resources, then free IMG. */
1033 img
->type
->free (f
, img
);
1038 /* Return 1 if the given widths and heights are valid for display;
1039 otherwise, return 0. */
1042 check_image_size (struct frame
*f
, int width
, int height
)
1046 if (width
<= 0 || height
<= 0)
1049 if (INTEGERP (Vmax_image_size
))
1050 w
= h
= XINT (Vmax_image_size
);
1051 else if (FLOATP (Vmax_image_size
))
1055 w
= FRAME_PIXEL_WIDTH (f
);
1056 h
= FRAME_PIXEL_HEIGHT (f
);
1059 w
= h
= 1024; /* Arbitrary size for unknown frame. */
1060 w
= (int) (XFLOAT_DATA (Vmax_image_size
) * w
);
1061 h
= (int) (XFLOAT_DATA (Vmax_image_size
) * h
);
1066 return (width
<= w
&& height
<= h
);
1069 /* Prepare image IMG for display on frame F. Must be called before
1070 drawing an image. */
1073 prepare_image_for_display (struct frame
*f
, struct image
*img
)
1077 /* We're about to display IMG, so set its timestamp to `now'. */
1079 img
->timestamp
= EMACS_SECS (t
);
1081 /* If IMG doesn't have a pixmap yet, load it now, using the image
1082 type dependent loader function. */
1083 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1084 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1089 /* Value is the number of pixels for the ascent of image IMG when
1090 drawn in face FACE. */
1093 image_ascent (struct image
*img
, struct face
*face
, struct glyph_slice
*slice
)
1098 if (slice
->height
== img
->height
)
1099 height
= img
->height
+ img
->vmargin
;
1100 else if (slice
->y
== 0)
1101 height
= slice
->height
+ img
->vmargin
;
1103 height
= slice
->height
;
1105 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1110 /* W32 specific version. Why?. ++kfs */
1111 ascent
= height
/ 2 - (FONT_DESCENT (face
->font
)
1112 - FONT_BASE (face
->font
)) / 2;
1114 /* This expression is arranged so that if the image can't be
1115 exactly centered, it will be moved slightly up. This is
1116 because a typical font is `top-heavy' (due to the presence
1117 uppercase letters), so the image placement should err towards
1118 being top-heavy too. It also just generally looks better. */
1119 ascent
= (height
+ FONT_BASE(face
->font
)
1120 - FONT_DESCENT(face
->font
) + 1) / 2;
1121 #endif /* HAVE_NTGUI */
1124 ascent
= height
/ 2;
1127 ascent
= (int) (height
* img
->ascent
/ 100.0);
1133 /* Image background colors. */
1135 /* Find the "best" corner color of a bitmap.
1136 On W32, XIMG is assumed to a device context with the bitmap selected. */
1138 static RGB_PIXEL_COLOR
1139 four_corners_best (XImagePtr_or_DC ximg
, int *corners
,
1140 unsigned long width
, unsigned long height
)
1142 RGB_PIXEL_COLOR corner_pixels
[4], best
IF_LINT (= 0);
1145 if (corners
&& corners
[BOT_CORNER
] >= 0)
1147 /* Get the colors at the corner_pixels of ximg. */
1148 corner_pixels
[0] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[TOP_CORNER
]);
1149 corner_pixels
[1] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[TOP_CORNER
]);
1150 corner_pixels
[2] = GET_PIXEL (ximg
, corners
[RIGHT_CORNER
] - 1, corners
[BOT_CORNER
] - 1);
1151 corner_pixels
[3] = GET_PIXEL (ximg
, corners
[LEFT_CORNER
], corners
[BOT_CORNER
] - 1);
1155 /* Get the colors at the corner_pixels of ximg. */
1156 corner_pixels
[0] = GET_PIXEL (ximg
, 0, 0);
1157 corner_pixels
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1158 corner_pixels
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1159 corner_pixels
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1161 /* Choose the most frequently found color as background. */
1162 for (i
= best_count
= 0; i
< 4; ++i
)
1166 for (j
= n
= 0; j
< 4; ++j
)
1167 if (corner_pixels
[i
] == corner_pixels
[j
])
1171 best
= corner_pixels
[i
], best_count
= n
;
1177 /* Portability macros */
1181 #define Destroy_Image(img_dc, prev) \
1182 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1184 #define Free_Pixmap(display, pixmap) \
1185 DeleteObject (pixmap)
1187 #elif defined (HAVE_NS)
1189 #define Destroy_Image(ximg, dummy) \
1190 ns_release_object (ximg)
1192 #define Free_Pixmap(display, pixmap) \
1193 ns_release_object (pixmap)
1197 #define Destroy_Image(ximg, dummy) \
1198 XDestroyImage (ximg)
1200 #define Free_Pixmap(display, pixmap) \
1201 XFreePixmap (display, pixmap)
1203 #endif /* !HAVE_NTGUI && !HAVE_NS */
1206 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1207 it is guessed heuristically. If non-zero, XIMG is an existing
1208 XImage object (or device context with the image selected on W32) to
1209 use for the heuristic. */
1212 image_background (struct image
*img
, struct frame
*f
, XImagePtr_or_DC ximg
)
1214 if (! img
->background_valid
)
1215 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1217 int free_ximg
= !ximg
;
1220 #endif /* HAVE_NTGUI */
1225 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1226 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1228 HDC frame_dc
= get_frame_dc (f
);
1229 ximg
= CreateCompatibleDC (frame_dc
);
1230 release_frame_dc (f
, frame_dc
);
1231 prev
= SelectObject (ximg
, img
->pixmap
);
1232 #endif /* !HAVE_NTGUI */
1235 img
->background
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
1238 Destroy_Image (ximg
, prev
);
1240 img
->background_valid
= 1;
1243 return img
->background
;
1246 /* Return the `background_transparent' field of IMG. If IMG doesn't
1247 have one yet, it is guessed heuristically. If non-zero, MASK is an
1248 existing XImage object to use for the heuristic. */
1251 image_background_transparent (struct image
*img
, struct frame
*f
, XImagePtr_or_DC mask
)
1253 if (! img
->background_transparent_valid
)
1254 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1258 int free_mask
= !mask
;
1261 #endif /* HAVE_NTGUI */
1266 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1267 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1269 HDC frame_dc
= get_frame_dc (f
);
1270 mask
= CreateCompatibleDC (frame_dc
);
1271 release_frame_dc (f
, frame_dc
);
1272 prev
= SelectObject (mask
, img
->mask
);
1273 #endif /* HAVE_NTGUI */
1276 img
->background_transparent
1277 = (four_corners_best (mask
, img
->corners
, img
->width
, img
->height
) == PIX_MASK_RETAIN
);
1280 Destroy_Image (mask
, prev
);
1283 img
->background_transparent
= 0;
1285 img
->background_transparent_valid
= 1;
1288 return img
->background_transparent
;
1292 /***********************************************************************
1293 Helper functions for X image types
1294 ***********************************************************************/
1296 static void x_clear_image_1 (struct frame
*, struct image
*, int,
1298 static void x_clear_image (struct frame
*f
, struct image
*img
);
1299 static unsigned long x_alloc_image_color (struct frame
*f
,
1301 Lisp_Object color_name
,
1302 unsigned long dflt
);
1305 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1306 free the pixmap if any. MASK_P non-zero means clear the mask
1307 pixmap if any. COLORS_P non-zero means free colors allocated for
1308 the image, if any. */
1311 x_clear_image_1 (struct frame
*f
, struct image
*img
, int pixmap_p
, int mask_p
,
1314 if (pixmap_p
&& img
->pixmap
)
1316 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1317 img
->pixmap
= NO_PIXMAP
;
1318 /* NOTE (HAVE_NS): background color is NOT an indexed color! */
1319 img
->background_valid
= 0;
1322 if (mask_p
&& img
->mask
)
1324 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1325 img
->mask
= NO_PIXMAP
;
1326 img
->background_transparent_valid
= 0;
1329 if (colors_p
&& img
->ncolors
)
1331 /* W32_TODO: color table support. */
1332 #ifdef HAVE_X_WINDOWS
1333 x_free_colors (f
, img
->colors
, img
->ncolors
);
1334 #endif /* HAVE_X_WINDOWS */
1335 xfree (img
->colors
);
1342 /* Free X resources of image IMG which is used on frame F. */
1345 x_clear_image (struct frame
*f
, struct image
*img
)
1348 x_clear_image_1 (f
, img
, 1, 1, 1);
1353 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1354 cannot be allocated, use DFLT. Add a newly allocated color to
1355 IMG->colors, so that it can be freed again. Value is the pixel
1358 static unsigned long
1359 x_alloc_image_color (struct frame
*f
, struct image
*img
, Lisp_Object color_name
,
1363 unsigned long result
;
1365 xassert (STRINGP (color_name
));
1367 if (x_defined_color (f
, SSDATA (color_name
), &color
, 1))
1369 /* This isn't called frequently so we get away with simply
1370 reallocating the color vector to the needed size, here. */
1373 (unsigned long *) xrealloc (img
->colors
,
1374 img
->ncolors
* sizeof *img
->colors
);
1375 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1376 result
= color
.pixel
;
1386 /***********************************************************************
1388 ***********************************************************************/
1390 static void cache_image (struct frame
*f
, struct image
*img
);
1391 static void postprocess_image (struct frame
*, struct image
*);
1393 /* Return a new, initialized image cache that is allocated from the
1394 heap. Call free_image_cache to free an image cache. */
1396 struct image_cache
*
1397 make_image_cache (void)
1399 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1402 memset (c
, 0, sizeof *c
);
1404 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1405 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1406 c
->buckets
= (struct image
**) xmalloc (size
);
1407 memset (c
->buckets
, 0, size
);
1412 /* Find an image matching SPEC in the cache, and return it. If no
1413 image is found, return NULL. */
1414 static struct image
*
1415 search_image_cache (struct frame
*f
, Lisp_Object spec
, EMACS_UINT hash
)
1418 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1419 int i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1421 if (!c
) return NULL
;
1423 /* If the image spec does not specify a background color, the cached
1424 image must have the same background color as the current frame.
1425 The foreground color must also match, for the sake of monochrome
1428 In fact, we could ignore the foreground color matching condition
1429 for color images, or if the image spec specifies :foreground;
1430 similarly we could ignore the background color matching condition
1431 for formats that don't use transparency (such as jpeg), or if the
1432 image spec specifies :background. However, the extra memory
1433 usage is probably negligible in practice, so we don't bother. */
1435 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1436 if (img
->hash
== hash
1437 && !NILP (Fequal (img
->spec
, spec
))
1438 && img
->frame_foreground
== FRAME_FOREGROUND_PIXEL (f
)
1439 && img
->frame_background
== FRAME_BACKGROUND_PIXEL (f
))
1445 /* Search frame F for an image with spec SPEC, and free it. */
1448 uncache_image (struct frame
*f
, Lisp_Object spec
)
1450 struct image
*img
= search_image_cache (f
, spec
, sxhash (spec
, 0));
1453 free_image (f
, img
);
1454 /* As display glyphs may still be referring to the image ID, we
1455 must garbage the frame (Bug#6426). */
1456 SET_FRAME_GARBAGED (f
);
1461 /* Free image cache of frame F. Be aware that X frames share images
1465 free_image_cache (struct frame
*f
)
1467 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1472 /* Cache should not be referenced by any frame when freed. */
1473 xassert (c
->refcount
== 0);
1475 for (i
= 0; i
< c
->used
; ++i
)
1476 free_image (f
, c
->images
[i
]);
1480 FRAME_IMAGE_CACHE (f
) = NULL
;
1485 /* Clear image cache of frame F. FILTER=t means free all images.
1486 FILTER=nil means clear only images that haven't been
1487 displayed for some time.
1488 Else, only free the images which have FILTER in their `dependencies'.
1489 Should be called from time to time to reduce the number of loaded images.
1490 If image-cache-eviction-delay is non-nil, this frees images in the cache
1491 which weren't displayed for at least that many seconds. */
1494 clear_image_cache (struct frame
*f
, Lisp_Object filter
)
1496 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1502 /* Block input so that we won't be interrupted by a SIGIO
1503 while being in an inconsistent state. */
1508 /* Filter image cache. */
1509 for (i
= 0; i
< c
->used
; ++i
)
1511 struct image
*img
= c
->images
[i
];
1512 if (img
&& (EQ (Qt
, filter
)
1513 || !NILP (Fmember (filter
, img
->dependencies
))))
1515 free_image (f
, img
);
1520 else if (INTEGERP (Vimage_cache_eviction_delay
))
1522 /* Free cache based on timestamp. */
1525 int delay
, nimages
= 0;
1527 for (i
= 0; i
< c
->used
; ++i
)
1531 /* If the number of cached images has grown unusually large,
1532 decrease the cache eviction delay (Bug#6230). */
1533 delay
= XFASTINT (Vimage_cache_eviction_delay
);
1535 delay
= max (1, 1600 * delay
/ (nimages
*nimages
));
1538 old
= EMACS_SECS (t
) - delay
;
1540 for (i
= 0; i
< c
->used
; ++i
)
1542 struct image
*img
= c
->images
[i
];
1543 if (img
&& img
->timestamp
< old
)
1545 free_image (f
, img
);
1551 /* We may be clearing the image cache because, for example,
1552 Emacs was iconified for a longer period of time. In that
1553 case, current matrices may still contain references to
1554 images freed above. So, clear these matrices. */
1557 Lisp_Object tail
, frame
;
1559 FOR_EACH_FRAME (tail
, frame
)
1561 struct frame
*fr
= XFRAME (frame
);
1562 if (FRAME_IMAGE_CACHE (fr
) == c
)
1563 clear_current_matrices (fr
);
1566 ++windows_or_buffers_changed
;
1574 clear_image_caches (Lisp_Object filter
)
1576 /* FIXME: We want to do
1577 * struct terminal *t;
1578 * for (t = terminal_list; t; t = t->next_terminal)
1579 * clear_image_cache (t, filter); */
1580 Lisp_Object tail
, frame
;
1581 FOR_EACH_FRAME (tail
, frame
)
1582 if (FRAME_WINDOW_P (XFRAME (frame
)))
1583 clear_image_cache (XFRAME (frame
), filter
);
1586 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1588 doc
: /* Clear the image cache.
1589 FILTER nil or a frame means clear all images in the selected frame.
1590 FILTER t means clear the image caches of all frames.
1591 Anything else, means only clear those images which refer to FILTER,
1592 which is then usually a filename. */)
1593 (Lisp_Object filter
)
1595 if (!(EQ (filter
, Qnil
) || FRAMEP (filter
)))
1596 clear_image_caches (filter
);
1598 clear_image_cache (check_x_frame (filter
), Qt
);
1604 DEFUN ("image-flush", Fimage_flush
, Simage_flush
,
1606 doc
: /* Fush the image with specification SPEC on frame FRAME.
1607 This removes the image from the Emacs image cache. If SPEC specifies
1608 an image file, the next redisplay of this image will read from the
1609 current contents of that file.
1611 FRAME nil or omitted means use the selected frame.
1612 FRAME t means refresh the image on all frames. */)
1613 (Lisp_Object spec
, Lisp_Object frame
)
1615 if (!valid_image_p (spec
))
1616 error ("Invalid image specification");
1621 FOR_EACH_FRAME (tail
, frame
)
1623 struct frame
*f
= XFRAME (frame
);
1624 if (FRAME_WINDOW_P (f
))
1625 uncache_image (f
, spec
);
1629 uncache_image (check_x_frame (frame
), spec
);
1635 /* Compute masks and transform image IMG on frame F, as specified
1636 by the image's specification, */
1639 postprocess_image (struct frame
*f
, struct image
*img
)
1641 /* Manipulation of the image's mask. */
1644 Lisp_Object conversion
, spec
;
1649 /* `:heuristic-mask t'
1651 means build a mask heuristically.
1652 `:heuristic-mask (R G B)'
1653 `:mask (heuristic (R G B))'
1654 means build a mask from color (R G B) in the
1657 means remove a mask, if any. */
1659 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1661 x_build_heuristic_mask (f
, img
, mask
);
1666 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1668 if (EQ (mask
, Qheuristic
))
1669 x_build_heuristic_mask (f
, img
, Qt
);
1670 else if (CONSP (mask
)
1671 && EQ (XCAR (mask
), Qheuristic
))
1673 if (CONSP (XCDR (mask
)))
1674 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1676 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1678 else if (NILP (mask
) && found_p
&& img
->mask
)
1680 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1681 img
->mask
= NO_PIXMAP
;
1686 /* Should we apply an image transformation algorithm? */
1687 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1688 if (EQ (conversion
, Qdisabled
))
1689 x_disable_image (f
, img
);
1690 else if (EQ (conversion
, Qlaplace
))
1692 else if (EQ (conversion
, Qemboss
))
1694 else if (CONSP (conversion
)
1695 && EQ (XCAR (conversion
), Qedge_detection
))
1698 tem
= XCDR (conversion
);
1700 x_edge_detection (f
, img
,
1701 Fplist_get (tem
, QCmatrix
),
1702 Fplist_get (tem
, QCcolor_adjustment
));
1708 /* Return the id of image with Lisp specification SPEC on frame F.
1709 SPEC must be a valid Lisp image specification (see valid_image_p). */
1712 lookup_image (struct frame
*f
, Lisp_Object spec
)
1718 /* F must be a window-system frame, and SPEC must be a valid image
1720 xassert (FRAME_WINDOW_P (f
));
1721 xassert (valid_image_p (spec
));
1723 /* Look up SPEC in the hash table of the image cache. */
1724 hash
= sxhash (spec
, 0);
1725 img
= search_image_cache (f
, spec
, hash
);
1726 if (img
&& img
->load_failed_p
)
1728 free_image (f
, img
);
1732 /* If not found, create a new image and cache it. */
1736 img
= make_image (spec
, hash
);
1737 cache_image (f
, img
);
1738 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1739 img
->frame_foreground
= FRAME_FOREGROUND_PIXEL (f
);
1740 img
->frame_background
= FRAME_BACKGROUND_PIXEL (f
);
1742 /* If we can't load the image, and we don't have a width and
1743 height, use some arbitrary width and height so that we can
1744 draw a rectangle for it. */
1745 if (img
->load_failed_p
)
1749 value
= image_spec_value (spec
, QCwidth
, NULL
);
1750 img
->width
= (INTEGERP (value
)
1751 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1752 value
= image_spec_value (spec
, QCheight
, NULL
);
1753 img
->height
= (INTEGERP (value
)
1754 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1758 /* Handle image type independent image attributes
1759 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1760 `:background COLOR'. */
1761 Lisp_Object ascent
, margin
, relief
, bg
;
1763 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1764 if (INTEGERP (ascent
))
1765 img
->ascent
= XFASTINT (ascent
);
1766 else if (EQ (ascent
, Qcenter
))
1767 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1769 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1770 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1771 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1772 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1773 && INTEGERP (XCDR (margin
)))
1775 if (XINT (XCAR (margin
)) > 0)
1776 img
->hmargin
= XFASTINT (XCAR (margin
));
1777 if (XINT (XCDR (margin
)) > 0)
1778 img
->vmargin
= XFASTINT (XCDR (margin
));
1781 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1782 if (INTEGERP (relief
))
1784 img
->relief
= XINT (relief
);
1785 img
->hmargin
+= eabs (img
->relief
);
1786 img
->vmargin
+= eabs (img
->relief
);
1789 if (! img
->background_valid
)
1791 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1795 = x_alloc_image_color (f
, img
, bg
,
1796 FRAME_BACKGROUND_PIXEL (f
));
1797 img
->background_valid
= 1;
1801 /* Do image transformations and compute masks, unless we
1802 don't have the image yet. */
1803 if (!EQ (*img
->type
->type
, Qpostscript
))
1804 postprocess_image (f
, img
);
1810 /* We're using IMG, so set its timestamp to `now'. */
1811 EMACS_GET_TIME (now
);
1812 img
->timestamp
= EMACS_SECS (now
);
1814 /* Value is the image id. */
1819 /* Cache image IMG in the image cache of frame F. */
1822 cache_image (struct frame
*f
, struct image
*img
)
1824 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
1827 /* Find a free slot in c->images. */
1828 for (i
= 0; i
< c
->used
; ++i
)
1829 if (c
->images
[i
] == NULL
)
1832 /* If no free slot found, maybe enlarge c->images. */
1833 if (i
== c
->used
&& c
->used
== c
->size
)
1836 c
->images
= (struct image
**) xrealloc (c
->images
,
1837 c
->size
* sizeof *c
->images
);
1840 /* Add IMG to c->images, and assign IMG an id. */
1846 /* Add IMG to the cache's hash table. */
1847 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1848 img
->next
= c
->buckets
[i
];
1850 img
->next
->prev
= img
;
1852 c
->buckets
[i
] = img
;
1856 /* Call FN on every image in the image cache of frame F. Used to mark
1857 Lisp Objects in the image cache. */
1859 /* Mark Lisp objects in image IMG. */
1862 mark_image (struct image
*img
)
1864 mark_object (img
->spec
);
1865 mark_object (img
->dependencies
);
1867 if (!NILP (img
->data
.lisp_val
))
1868 mark_object (img
->data
.lisp_val
);
1873 mark_image_cache (struct image_cache
*c
)
1878 for (i
= 0; i
< c
->used
; ++i
)
1880 mark_image (c
->images
[i
]);
1886 /***********************************************************************
1887 X / NS / W32 support code
1888 ***********************************************************************/
1892 /* Macro for defining functions that will be loaded from image DLLs. */
1893 #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args
1895 /* Macro for loading those image functions from the library. */
1896 #define LOAD_IMGLIB_FN(lib,func) { \
1897 fn_##func = (void *) GetProcAddress (lib, #func); \
1898 if (!fn_##func) return 0; \
1901 #endif /* HAVE_NTGUI */
1903 static int x_create_x_image_and_pixmap (struct frame
*, int, int, int,
1904 XImagePtr
*, Pixmap
*);
1905 static void x_destroy_x_image (XImagePtr
);
1906 static void x_put_x_image (struct frame
*, XImagePtr
, Pixmap
, int, int);
1909 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1910 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1911 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1912 via xmalloc. Print error messages via image_error if an error
1913 occurs. Value is non-zero if successful.
1915 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1916 should indicate the bit depth of the image. */
1919 x_create_x_image_and_pixmap (struct frame
*f
, int width
, int height
, int depth
,
1920 XImagePtr
*ximg
, Pixmap
*pixmap
)
1922 #ifdef HAVE_X_WINDOWS
1923 Display
*display
= FRAME_X_DISPLAY (f
);
1924 Window window
= FRAME_X_WINDOW (f
);
1925 Screen
*screen
= FRAME_X_SCREEN (f
);
1927 xassert (interrupt_input_blocked
);
1930 depth
= DefaultDepthOfScreen (screen
);
1931 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1932 depth
, ZPixmap
, 0, NULL
, width
, height
,
1933 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1936 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1940 /* Allocate image raster. */
1941 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1943 /* Allocate a pixmap of the same size. */
1944 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1945 if (*pixmap
== NO_PIXMAP
)
1947 x_destroy_x_image (*ximg
);
1949 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1954 #endif /* HAVE_X_WINDOWS */
1958 BITMAPINFOHEADER
*header
;
1960 int scanline_width_bits
;
1962 int palette_colors
= 0;
1967 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1968 && depth
!= 16 && depth
!= 24 && depth
!= 32)
1970 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
1974 scanline_width_bits
= width
* depth
;
1975 remainder
= scanline_width_bits
% 32;
1978 scanline_width_bits
+= 32 - remainder
;
1980 /* Bitmaps with a depth less than 16 need a palette. */
1981 /* BITMAPINFO structure already contains the first RGBQUAD. */
1983 palette_colors
= 1 << depth
- 1;
1985 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
1988 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
1992 header
= &(*ximg
)->info
.bmiHeader
;
1993 memset (&(*ximg
)->info
, 0, sizeof (BITMAPINFO
));
1994 header
->biSize
= sizeof (*header
);
1995 header
->biWidth
= width
;
1996 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
1997 header
->biPlanes
= 1;
1998 header
->biBitCount
= depth
;
1999 header
->biCompression
= BI_RGB
;
2000 header
->biClrUsed
= palette_colors
;
2002 /* TODO: fill in palette. */
2005 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
2006 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
2007 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
2008 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
2009 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
2010 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
2011 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
2012 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
2015 hdc
= get_frame_dc (f
);
2017 /* Create a DIBSection and raster array for the bitmap,
2018 and store its handle in *pixmap. */
2019 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
2020 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
2021 /* casting avoids a GCC warning */
2022 (void **)&((*ximg
)->data
), NULL
, 0);
2024 /* Realize display palette and garbage all frames. */
2025 release_frame_dc (f
, hdc
);
2027 if (*pixmap
== NULL
)
2029 DWORD err
= GetLastError ();
2030 Lisp_Object errcode
;
2031 /* All system errors are < 10000, so the following is safe. */
2032 XSETINT (errcode
, (int) err
);
2033 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
2034 x_destroy_x_image (*ximg
);
2040 #endif /* HAVE_NTGUI */
2043 *pixmap
= ns_image_for_XPM (width
, height
, depth
);
2047 image_error ("Unable to allocate NSImage for XPM pixmap", Qnil
, Qnil
);
2056 /* Destroy XImage XIMG. Free XIMG->data. */
2059 x_destroy_x_image (XImagePtr ximg
)
2061 xassert (interrupt_input_blocked
);
2064 #ifdef HAVE_X_WINDOWS
2067 XDestroyImage (ximg
);
2068 #endif /* HAVE_X_WINDOWS */
2070 /* Data will be freed by DestroyObject. */
2073 #endif /* HAVE_NTGUI */
2075 ns_release_object (ximg
);
2076 #endif /* HAVE_NS */
2081 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
2082 are width and height of both the image and pixmap. */
2085 x_put_x_image (struct frame
*f
, XImagePtr ximg
, Pixmap pixmap
, int width
, int height
)
2087 #ifdef HAVE_X_WINDOWS
2090 xassert (interrupt_input_blocked
);
2091 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
2092 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
2093 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
2094 #endif /* HAVE_X_WINDOWS */
2097 #if 0 /* I don't think this is necessary looking at where it is used. */
2098 HDC hdc
= get_frame_dc (f
);
2099 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
2100 release_frame_dc (f
, hdc
);
2102 #endif /* HAVE_NTGUI */
2105 xassert (ximg
== pixmap
);
2106 ns_retain_object (ximg
);
2111 /***********************************************************************
2113 ***********************************************************************/
2115 static unsigned char *slurp_file (char *, int *);
2118 /* Find image file FILE. Look in data-directory/images, then
2119 x-bitmap-file-path. Value is the encoded full name of the file
2120 found, or nil if not found. */
2123 x_find_image_file (Lisp_Object file
)
2125 Lisp_Object file_found
, search_path
;
2128 /* TODO I think this should use something like image-load-path
2129 instead. Unfortunately, that can contain non-string elements. */
2130 search_path
= Fcons (Fexpand_file_name (build_string ("images"),
2132 Vx_bitmap_file_path
);
2134 /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */
2135 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2141 file_found
= ENCODE_FILE (file_found
);
2149 /* Read FILE into memory. Value is a pointer to a buffer allocated
2150 with xmalloc holding FILE's contents. Value is null if an error
2151 occurred. *SIZE is set to the size of the file. */
2153 static unsigned char *
2154 slurp_file (char *file
, int *size
)
2157 unsigned char *buf
= NULL
;
2160 if (stat (file
, &st
) == 0
2161 && (fp
= fopen (file
, "rb")) != NULL
2162 && (buf
= (unsigned char *) xmalloc (st
.st_size
),
2163 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2184 /***********************************************************************
2186 ***********************************************************************/
2188 static int xbm_scan (unsigned char **, unsigned char *, char *, int *);
2189 static int xbm_load (struct frame
*f
, struct image
*img
);
2190 static int xbm_load_image (struct frame
*f
, struct image
*img
,
2191 unsigned char *, unsigned char *);
2192 static int xbm_image_p (Lisp_Object object
);
2193 static int xbm_read_bitmap_data (struct frame
*f
,
2194 unsigned char *, unsigned char *,
2195 int *, int *, char **, int);
2196 static int xbm_file_p (Lisp_Object
);
2199 /* Indices of image specification fields in xbm_format, below. */
2201 enum xbm_keyword_index
2219 /* Vector of image_keyword structures describing the format
2220 of valid XBM image specifications. */
2222 static const struct image_keyword xbm_format
[XBM_LAST
] =
2224 {":type", IMAGE_SYMBOL_VALUE
, 1},
2225 {":file", IMAGE_STRING_VALUE
, 0},
2226 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2227 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2228 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2229 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2230 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2231 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2232 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2233 {":relief", IMAGE_INTEGER_VALUE
, 0},
2234 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2235 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2236 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2239 /* Structure describing the image type XBM. */
2241 static struct image_type xbm_type
=
2250 /* Tokens returned from xbm_scan. */
2259 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2260 A valid specification is a list starting with the symbol `image'
2261 The rest of the list is a property list which must contain an
2264 If the specification specifies a file to load, it must contain
2265 an entry `:file FILENAME' where FILENAME is a string.
2267 If the specification is for a bitmap loaded from memory it must
2268 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2269 WIDTH and HEIGHT are integers > 0. DATA may be:
2271 1. a string large enough to hold the bitmap data, i.e. it must
2272 have a size >= (WIDTH + 7) / 8 * HEIGHT
2274 2. a bool-vector of size >= WIDTH * HEIGHT
2276 3. a vector of strings or bool-vectors, one for each line of the
2279 4. a string containing an in-memory XBM file. WIDTH and HEIGHT
2280 may not be specified in this case because they are defined in the
2283 Both the file and data forms may contain the additional entries
2284 `:background COLOR' and `:foreground COLOR'. If not present,
2285 foreground and background of the frame on which the image is
2286 displayed is used. */
2289 xbm_image_p (Lisp_Object object
)
2291 struct image_keyword kw
[XBM_LAST
];
2293 memcpy (kw
, xbm_format
, sizeof kw
);
2294 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2297 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2299 if (kw
[XBM_FILE
].count
)
2301 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2304 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2306 /* In-memory XBM file. */
2307 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2315 /* Entries for `:width', `:height' and `:data' must be present. */
2316 if (!kw
[XBM_WIDTH
].count
2317 || !kw
[XBM_HEIGHT
].count
2318 || !kw
[XBM_DATA
].count
)
2321 data
= kw
[XBM_DATA
].value
;
2322 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2323 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2325 /* Check type of data, and width and height against contents of
2331 /* Number of elements of the vector must be >= height. */
2332 if (ASIZE (data
) < height
)
2335 /* Each string or bool-vector in data must be large enough
2336 for one line of the image. */
2337 for (i
= 0; i
< height
; ++i
)
2339 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2344 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2347 else if (BOOL_VECTOR_P (elt
))
2349 if (XBOOL_VECTOR (elt
)->size
< width
)
2356 else if (STRINGP (data
))
2359 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2362 else if (BOOL_VECTOR_P (data
))
2364 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2375 /* Scan a bitmap file. FP is the stream to read from. Value is
2376 either an enumerator from enum xbm_token, or a character for a
2377 single-character token, or 0 at end of file. If scanning an
2378 identifier, store the lexeme of the identifier in SVAL. If
2379 scanning a number, store its value in *IVAL. */
2382 xbm_scan (unsigned char **s
, unsigned char *end
, char *sval
, int *ival
)
2388 /* Skip white space. */
2389 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2394 else if (isdigit (c
))
2396 int value
= 0, digit
;
2398 if (c
== '0' && *s
< end
)
2401 if (c
== 'x' || c
== 'X')
2408 else if (c
>= 'a' && c
<= 'f')
2409 digit
= c
- 'a' + 10;
2410 else if (c
>= 'A' && c
<= 'F')
2411 digit
= c
- 'A' + 10;
2414 value
= 16 * value
+ digit
;
2417 else if (isdigit (c
))
2421 && (c
= *(*s
)++, isdigit (c
)))
2422 value
= 8 * value
+ c
- '0';
2429 && (c
= *(*s
)++, isdigit (c
)))
2430 value
= 10 * value
+ c
- '0';
2438 else if (isalpha (c
) || c
== '_')
2442 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2449 else if (c
== '/' && **s
== '*')
2451 /* C-style comment. */
2453 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2467 /* Create a Windows bitmap from X bitmap data. */
2469 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2471 static unsigned char swap_nibble
[16]
2472 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2473 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2474 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2475 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2477 unsigned char *bits
, *p
;
2480 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2481 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2482 bits
= (unsigned char *) alloca (height
* w2
);
2483 memset (bits
, 0, height
* w2
);
2484 for (i
= 0; i
< height
; i
++)
2487 for (j
= 0; j
< w1
; j
++)
2489 /* Bitswap XBM bytes to match how Windows does things. */
2490 unsigned char c
= *data
++;
2491 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2492 | (swap_nibble
[(c
>>4) & 0xf]));
2495 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2501 convert_mono_to_color_image (struct frame
*f
, struct image
*img
,
2502 COLORREF foreground
, COLORREF background
)
2504 HDC hdc
, old_img_dc
, new_img_dc
;
2505 HGDIOBJ old_prev
, new_prev
;
2508 hdc
= get_frame_dc (f
);
2509 old_img_dc
= CreateCompatibleDC (hdc
);
2510 new_img_dc
= CreateCompatibleDC (hdc
);
2511 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2512 release_frame_dc (f
, hdc
);
2513 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2514 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2515 /* Windows convention for mono bitmaps is black = background,
2516 white = foreground. */
2517 SetTextColor (new_img_dc
, background
);
2518 SetBkColor (new_img_dc
, foreground
);
2520 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2523 SelectObject (old_img_dc
, old_prev
);
2524 SelectObject (new_img_dc
, new_prev
);
2525 DeleteDC (old_img_dc
);
2526 DeleteDC (new_img_dc
);
2527 DeleteObject (img
->pixmap
);
2528 if (new_pixmap
== 0)
2529 fprintf (stderr
, "Failed to convert image to color.\n");
2531 img
->pixmap
= new_pixmap
;
2534 #define XBM_BIT_SHUFFLE(b) (~(b))
2538 #define XBM_BIT_SHUFFLE(b) (b)
2540 #endif /* HAVE_NTGUI */
2544 Create_Pixmap_From_Bitmap_Data (struct frame
*f
, struct image
*img
, char *data
,
2545 RGB_PIXEL_COLOR fg
, RGB_PIXEL_COLOR bg
,
2546 int non_default_colors
)
2550 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2552 /* If colors were specified, transfer the bitmap to a color one. */
2553 if (non_default_colors
)
2554 convert_mono_to_color_image (f
, img
, fg
, bg
);
2556 #elif defined (HAVE_NS)
2557 img
->pixmap
= ns_image_from_XBM (data
, img
->width
, img
->height
);
2561 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2564 img
->width
, img
->height
,
2566 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2567 #endif /* !HAVE_NTGUI && !HAVE_NS */
2572 /* Replacement for XReadBitmapFileData which isn't available under old
2573 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2574 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2575 the image. Return in *DATA the bitmap data allocated with xmalloc.
2576 Value is non-zero if successful. DATA null means just test if
2577 CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR
2578 is non-zero, inhibit the call to image_error when the image size is
2579 invalid (the bitmap remains unread). */
2582 xbm_read_bitmap_data (struct frame
*f
, unsigned char *contents
, unsigned char *end
,
2583 int *width
, int *height
, char **data
,
2584 int inhibit_image_error
)
2586 unsigned char *s
= contents
;
2587 char buffer
[BUFSIZ
];
2590 int bytes_per_line
, i
, nbytes
;
2596 LA1 = xbm_scan (&s, end, buffer, &value)
2598 #define expect(TOKEN) \
2599 if (LA1 != (TOKEN)) \
2604 #define expect_ident(IDENT) \
2605 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2610 *width
= *height
= -1;
2613 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2615 /* Parse defines for width, height and hot-spots. */
2619 expect_ident ("define");
2620 expect (XBM_TK_IDENT
);
2622 if (LA1
== XBM_TK_NUMBER
)
2624 char *q
= strrchr (buffer
, '_');
2625 q
= q
? q
+ 1 : buffer
;
2626 if (strcmp (q
, "width") == 0)
2628 else if (strcmp (q
, "height") == 0)
2631 expect (XBM_TK_NUMBER
);
2634 if (!check_image_size (f
, *width
, *height
))
2636 if (!inhibit_image_error
)
2637 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
2640 else if (data
== NULL
)
2643 /* Parse bits. Must start with `static'. */
2644 expect_ident ("static");
2645 if (LA1
== XBM_TK_IDENT
)
2647 if (strcmp (buffer
, "unsigned") == 0)
2650 expect_ident ("char");
2652 else if (strcmp (buffer
, "short") == 0)
2656 if (*width
% 16 && *width
% 16 < 9)
2659 else if (strcmp (buffer
, "char") == 0)
2667 expect (XBM_TK_IDENT
);
2673 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2674 nbytes
= bytes_per_line
* *height
;
2675 p
= *data
= (char *) xmalloc (nbytes
);
2679 for (i
= 0; i
< nbytes
; i
+= 2)
2682 expect (XBM_TK_NUMBER
);
2684 *p
++ = XBM_BIT_SHUFFLE (val
);
2685 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2686 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2688 if (LA1
== ',' || LA1
== '}')
2696 for (i
= 0; i
< nbytes
; ++i
)
2699 expect (XBM_TK_NUMBER
);
2701 *p
++ = XBM_BIT_SHUFFLE (val
);
2703 if (LA1
== ',' || LA1
== '}')
2728 /* Load XBM image IMG which will be displayed on frame F from buffer
2729 CONTENTS. END is the end of the buffer. Value is non-zero if
2733 xbm_load_image (struct frame
*f
, struct image
*img
, unsigned char *contents
,
2740 rc
= xbm_read_bitmap_data (f
, contents
, end
, &img
->width
, &img
->height
,
2744 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2745 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2746 int non_default_colors
= 0;
2749 xassert (img
->width
> 0 && img
->height
> 0);
2751 /* Get foreground and background colors, maybe allocate colors. */
2752 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2755 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2756 non_default_colors
= 1;
2758 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2761 background
= x_alloc_image_color (f
, img
, value
, background
);
2762 img
->background
= background
;
2763 img
->background_valid
= 1;
2764 non_default_colors
= 1;
2767 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
2768 foreground
, background
,
2769 non_default_colors
);
2772 if (img
->pixmap
== NO_PIXMAP
)
2774 x_clear_image (f
, img
);
2775 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
2781 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2787 /* Value is non-zero if DATA looks like an in-memory XBM file. */
2790 xbm_file_p (Lisp_Object data
)
2793 return (STRINGP (data
)
2794 && xbm_read_bitmap_data (NULL
, SDATA (data
),
2795 (SDATA (data
) + SBYTES (data
)),
2800 /* Fill image IMG which is used on frame F with pixmap data. Value is
2801 non-zero if successful. */
2804 xbm_load (struct frame
*f
, struct image
*img
)
2807 Lisp_Object file_name
;
2809 xassert (xbm_image_p (img
->spec
));
2811 /* If IMG->spec specifies a file name, create a non-file spec from it. */
2812 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
2813 if (STRINGP (file_name
))
2816 unsigned char *contents
;
2819 file
= x_find_image_file (file_name
);
2820 if (!STRINGP (file
))
2822 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
2826 contents
= slurp_file (SSDATA (file
), &size
);
2827 if (contents
== NULL
)
2829 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
2833 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
2837 struct image_keyword fmt
[XBM_LAST
];
2839 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2840 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2841 int non_default_colors
= 0;
2844 int in_memory_file_p
= 0;
2846 /* See if data looks like an in-memory XBM file. */
2847 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2848 in_memory_file_p
= xbm_file_p (data
);
2850 /* Parse the image specification. */
2851 memcpy (fmt
, xbm_format
, sizeof fmt
);
2852 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
2856 /* Get specified width, and height. */
2857 if (!in_memory_file_p
)
2859 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
2860 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
2861 xassert (img
->width
> 0 && img
->height
> 0);
2864 /* Get foreground and background colors, maybe allocate colors. */
2865 if (fmt
[XBM_FOREGROUND
].count
2866 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
2868 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
2870 non_default_colors
= 1;
2873 if (fmt
[XBM_BACKGROUND
].count
2874 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
2876 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
2878 non_default_colors
= 1;
2881 if (in_memory_file_p
)
2882 success_p
= xbm_load_image (f
, img
, SDATA (data
),
2891 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
2893 p
= bits
= (char *) alloca (nbytes
* img
->height
);
2894 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
2896 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
2898 memcpy (p
, SDATA (line
), nbytes
);
2900 memcpy (p
, XBOOL_VECTOR (line
)->data
, nbytes
);
2903 else if (STRINGP (data
))
2904 bits
= SSDATA (data
);
2906 bits
= (char *) XBOOL_VECTOR (data
)->data
;
2912 /* Windows mono bitmaps are reversed compared with X. */
2913 invertedBits
= bits
;
2914 nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
2916 bits
= (char *) alloca (nbytes
);
2917 for (i
= 0; i
< nbytes
; i
++)
2918 bits
[i
] = XBM_BIT_SHUFFLE (invertedBits
[i
]);
2921 /* Create the pixmap. */
2923 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
2924 foreground
, background
,
2925 non_default_colors
);
2930 image_error ("Unable to create pixmap for XBM image `%s'",
2932 x_clear_image (f
, img
);
2942 /***********************************************************************
2944 ***********************************************************************/
2946 #if defined (HAVE_XPM) || defined (HAVE_NS)
2948 static int xpm_image_p (Lisp_Object object
);
2949 static int xpm_load (struct frame
*f
, struct image
*img
);
2950 static int xpm_valid_color_symbols_p (Lisp_Object
);
2952 #endif /* HAVE_XPM || HAVE_NS */
2956 /* Indicate to xpm.h that we don't have Xlib. */
2958 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
2959 /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */
2960 #define XColor xpm_XColor
2961 #define XImage xpm_XImage
2962 #define Display xpm_Display
2963 #define PIXEL_ALREADY_TYPEDEFED
2964 #include "X11/xpm.h"
2969 #undef PIXEL_ALREADY_TYPEDEFED
2971 #include "X11/xpm.h"
2972 #endif /* HAVE_NTGUI */
2973 #endif /* HAVE_XPM */
2975 #if defined (HAVE_XPM) || defined (HAVE_NS)
2976 /* The symbol `xpm' identifying XPM-format images. */
2978 static Lisp_Object Qxpm
;
2980 /* Indices of image specification fields in xpm_format, below. */
2982 enum xpm_keyword_index
2998 /* Vector of image_keyword structures describing the format
2999 of valid XPM image specifications. */
3001 static const struct image_keyword xpm_format
[XPM_LAST
] =
3003 {":type", IMAGE_SYMBOL_VALUE
, 1},
3004 {":file", IMAGE_STRING_VALUE
, 0},
3005 {":data", IMAGE_STRING_VALUE
, 0},
3006 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3007 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3008 {":relief", IMAGE_INTEGER_VALUE
, 0},
3009 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3010 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3011 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3012 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3013 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3016 /* Structure describing the image type XPM. */
3018 static struct image_type xpm_type
=
3027 #ifdef HAVE_X_WINDOWS
3029 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3030 functions for allocating image colors. Our own functions handle
3031 color allocation failures more gracefully than the ones on the XPM
3034 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3035 #define ALLOC_XPM_COLORS
3037 #endif /* HAVE_X_WINDOWS */
3039 #ifdef ALLOC_XPM_COLORS
3041 static void xpm_init_color_cache (struct frame
*, XpmAttributes
*);
3042 static void xpm_free_color_cache (void);
3043 static int xpm_lookup_color (struct frame
*, char *, XColor
*);
3044 static int xpm_color_bucket (char *);
3045 static struct xpm_cached_color
*xpm_cache_color (struct frame
*, char *,
3048 /* An entry in a hash table used to cache color definitions of named
3049 colors. This cache is necessary to speed up XPM image loading in
3050 case we do color allocations ourselves. Without it, we would need
3051 a call to XParseColor per pixel in the image. */
3053 struct xpm_cached_color
3055 /* Next in collision chain. */
3056 struct xpm_cached_color
*next
;
3058 /* Color definition (RGB and pixel color). */
3065 /* The hash table used for the color cache, and its bucket vector
3068 #define XPM_COLOR_CACHE_BUCKETS 1001
3069 static struct xpm_cached_color
**xpm_color_cache
;
3071 /* Initialize the color cache. */
3074 xpm_init_color_cache (struct frame
*f
, XpmAttributes
*attrs
)
3076 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3077 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3078 memset (xpm_color_cache
, 0, nbytes
);
3079 init_color_table ();
3081 if (attrs
->valuemask
& XpmColorSymbols
)
3086 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3087 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3088 attrs
->colorsymbols
[i
].value
, &color
))
3090 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3092 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3097 /* Free the color cache. */
3100 xpm_free_color_cache (void)
3102 struct xpm_cached_color
*p
, *next
;
3105 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3106 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3112 xfree (xpm_color_cache
);
3113 xpm_color_cache
= NULL
;
3114 free_color_table ();
3117 /* Return the bucket index for color named COLOR_NAME in the color
3121 xpm_color_bucket (char *color_name
)
3126 for (s
= color_name
; *s
; ++s
)
3128 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3132 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3133 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3136 static struct xpm_cached_color
*
3137 xpm_cache_color (struct frame
*f
, char *color_name
, XColor
*color
, int bucket
)
3140 struct xpm_cached_color
*p
;
3143 bucket
= xpm_color_bucket (color_name
);
3145 nbytes
= sizeof *p
+ strlen (color_name
);
3146 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3147 strcpy (p
->name
, color_name
);
3149 p
->next
= xpm_color_cache
[bucket
];
3150 xpm_color_cache
[bucket
] = p
;
3154 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3155 return the cached definition in *COLOR. Otherwise, make a new
3156 entry in the cache and allocate the color. Value is zero if color
3157 allocation failed. */
3160 xpm_lookup_color (struct frame
*f
, char *color_name
, XColor
*color
)
3162 struct xpm_cached_color
*p
;
3163 int h
= xpm_color_bucket (color_name
);
3165 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3166 if (strcmp (p
->name
, color_name
) == 0)
3171 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3174 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3176 p
= xpm_cache_color (f
, color_name
, color
, h
);
3178 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3179 with transparency, and it's useful. */
3180 else if (strcmp ("opaque", color_name
) == 0)
3182 memset (color
, 0, sizeof (XColor
)); /* Is this necessary/correct? */
3183 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3184 p
= xpm_cache_color (f
, color_name
, color
, h
);
3191 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3192 CLOSURE is a pointer to the frame on which we allocate the
3193 color. Return in *COLOR the allocated color. Value is non-zero
3197 xpm_alloc_color (Display
*dpy
, Colormap cmap
, char *color_name
, XColor
*color
,
3200 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3204 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3205 is a pointer to the frame on which we allocate the color. Value is
3206 non-zero if successful. */
3209 xpm_free_colors (Display
*dpy
, Colormap cmap
, Pixel
*pixels
, int npixels
, void *closure
)
3214 #endif /* ALLOC_XPM_COLORS */
3219 /* XPM library details. */
3221 DEF_IMGLIB_FN (void, XpmFreeAttributes
, (XpmAttributes
*));
3222 DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer
, (Display
*, char *, xpm_XImage
**,
3223 xpm_XImage
**, XpmAttributes
*));
3224 DEF_IMGLIB_FN (int, XpmReadFileToImage
, (Display
*, char *, xpm_XImage
**,
3225 xpm_XImage
**, XpmAttributes
*));
3226 DEF_IMGLIB_FN (void, XImageFree
, (xpm_XImage
*));
3229 init_xpm_functions (Lisp_Object libraries
)
3233 if (!(library
= w32_delayed_load (libraries
, Qxpm
)))
3236 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3237 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3238 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3239 LOAD_IMGLIB_FN (library
, XImageFree
);
3243 #endif /* HAVE_NTGUI */
3246 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3247 for XPM images. Such a list must consist of conses whose car and
3251 xpm_valid_color_symbols_p (Lisp_Object color_symbols
)
3253 while (CONSP (color_symbols
))
3255 Lisp_Object sym
= XCAR (color_symbols
);
3257 || !STRINGP (XCAR (sym
))
3258 || !STRINGP (XCDR (sym
)))
3260 color_symbols
= XCDR (color_symbols
);
3263 return NILP (color_symbols
);
3267 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3270 xpm_image_p (Lisp_Object object
)
3272 struct image_keyword fmt
[XPM_LAST
];
3273 memcpy (fmt
, xpm_format
, sizeof fmt
);
3274 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3275 /* Either `:file' or `:data' must be present. */
3276 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3277 /* Either no `:color-symbols' or it's a list of conses
3278 whose car and cdr are strings. */
3279 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3280 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3283 #endif /* HAVE_XPM || HAVE_NS */
3285 #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK
3287 x_create_bitmap_from_xpm_data (struct frame
*f
, const char **bits
)
3289 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3291 XpmAttributes attrs
;
3292 Pixmap bitmap
, mask
;
3294 memset (&attrs
, 0, sizeof attrs
);
3296 attrs
.visual
= FRAME_X_VISUAL (f
);
3297 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3298 attrs
.valuemask
|= XpmVisual
;
3299 attrs
.valuemask
|= XpmColormap
;
3301 rc
= XpmCreatePixmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3302 (char **) bits
, &bitmap
, &mask
, &attrs
);
3303 if (rc
!= XpmSuccess
)
3305 XpmFreeAttributes (&attrs
);
3309 id
= x_allocate_bitmap_record (f
);
3310 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
3311 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
3312 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
3313 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
3314 dpyinfo
->bitmaps
[id
- 1].height
= attrs
.height
;
3315 dpyinfo
->bitmaps
[id
- 1].width
= attrs
.width
;
3316 dpyinfo
->bitmaps
[id
- 1].depth
= attrs
.depth
;
3317 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
3319 XpmFreeAttributes (&attrs
);
3322 #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */
3324 /* Load image IMG which will be displayed on frame F. Value is
3325 non-zero if successful. */
3330 xpm_load (struct frame
*f
, struct image
*img
)
3333 XpmAttributes attrs
;
3334 Lisp_Object specified_file
, color_symbols
;
3337 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3338 #endif /* HAVE_NTGUI */
3340 /* Configure the XPM lib. Use the visual of frame F. Allocate
3341 close colors. Return colors allocated. */
3342 memset (&attrs
, 0, sizeof attrs
);
3345 attrs
.visual
= FRAME_X_VISUAL (f
);
3346 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3347 attrs
.valuemask
|= XpmVisual
;
3348 attrs
.valuemask
|= XpmColormap
;
3349 #endif /* HAVE_NTGUI */
3351 #ifdef ALLOC_XPM_COLORS
3352 /* Allocate colors with our own functions which handle
3353 failing color allocation more gracefully. */
3354 attrs
.color_closure
= f
;
3355 attrs
.alloc_color
= xpm_alloc_color
;
3356 attrs
.free_colors
= xpm_free_colors
;
3357 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3358 #else /* not ALLOC_XPM_COLORS */
3359 /* Let the XPM lib allocate colors. */
3360 attrs
.valuemask
|= XpmReturnAllocPixels
;
3361 #ifdef XpmAllocCloseColors
3362 attrs
.alloc_close_colors
= 1;
3363 attrs
.valuemask
|= XpmAllocCloseColors
;
3364 #else /* not XpmAllocCloseColors */
3365 attrs
.closeness
= 600;
3366 attrs
.valuemask
|= XpmCloseness
;
3367 #endif /* not XpmAllocCloseColors */
3368 #endif /* ALLOC_XPM_COLORS */
3370 /* If image specification contains symbolic color definitions, add
3371 these to `attrs'. */
3372 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3373 if (CONSP (color_symbols
))
3376 XpmColorSymbol
*xpm_syms
;
3379 attrs
.valuemask
|= XpmColorSymbols
;
3381 /* Count number of symbols. */
3382 attrs
.numsymbols
= 0;
3383 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3386 /* Allocate an XpmColorSymbol array. */
3387 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3388 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3389 memset (xpm_syms
, 0, size
);
3390 attrs
.colorsymbols
= xpm_syms
;
3392 /* Fill the color symbol array. */
3393 for (tail
= color_symbols
, i
= 0;
3395 ++i
, tail
= XCDR (tail
))
3399 char *empty_string
= (char *) "";
3401 if (!CONSP (XCAR (tail
)))
3403 xpm_syms
[i
].name
= empty_string
;
3404 xpm_syms
[i
].value
= empty_string
;
3407 name
= XCAR (XCAR (tail
));
3408 color
= XCDR (XCAR (tail
));
3411 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3412 strcpy (xpm_syms
[i
].name
, SSDATA (name
));
3415 xpm_syms
[i
].name
= empty_string
;
3416 if (STRINGP (color
))
3418 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3419 strcpy (xpm_syms
[i
].value
, SSDATA (color
));
3422 xpm_syms
[i
].value
= empty_string
;
3426 /* Create a pixmap for the image, either from a file, or from a
3427 string buffer containing data in the same format as an XPM file. */
3428 #ifdef ALLOC_XPM_COLORS
3429 xpm_init_color_cache (f
, &attrs
);
3432 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3436 HDC frame_dc
= get_frame_dc (f
);
3437 hdc
= CreateCompatibleDC (frame_dc
);
3438 release_frame_dc (f
, frame_dc
);
3440 #endif /* HAVE_NTGUI */
3442 if (STRINGP (specified_file
))
3444 Lisp_Object file
= x_find_image_file (specified_file
);
3445 if (!STRINGP (file
))
3447 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3448 #ifdef ALLOC_XPM_COLORS
3449 xpm_free_color_cache ();
3455 /* XpmReadFileToPixmap is not available in the Windows port of
3456 libxpm. But XpmReadFileToImage almost does what we want. */
3457 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3458 &xpm_image
, &xpm_mask
,
3461 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3462 SSDATA (file
), &img
->pixmap
, &img
->mask
,
3464 #endif /* HAVE_NTGUI */
3468 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3469 if (!STRINGP (buffer
))
3471 image_error ("Invalid image data `%s'", buffer
, Qnil
);
3472 #ifdef ALLOC_XPM_COLORS
3473 xpm_free_color_cache ();
3478 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3479 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3480 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3481 &xpm_image
, &xpm_mask
,
3484 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3486 &img
->pixmap
, &img
->mask
,
3488 #endif /* HAVE_NTGUI */
3491 if (rc
== XpmSuccess
)
3493 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3494 img
->colors
= colors_in_color_table (&img
->ncolors
);
3495 #else /* not ALLOC_XPM_COLORS */
3499 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3500 plus some duplicate attributes. */
3501 if (xpm_image
&& xpm_image
->bitmap
)
3503 img
->pixmap
= xpm_image
->bitmap
;
3504 /* XImageFree in libXpm frees XImage struct without destroying
3505 the bitmap, which is what we want. */
3506 fn_XImageFree (xpm_image
);
3508 if (xpm_mask
&& xpm_mask
->bitmap
)
3510 /* The mask appears to be inverted compared with what we expect.
3511 TODO: invert our expectations. See other places where we
3512 have to invert bits because our idea of masks is backwards. */
3514 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3516 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3517 SelectObject (hdc
, old_obj
);
3519 img
->mask
= xpm_mask
->bitmap
;
3520 fn_XImageFree (xpm_mask
);
3525 #endif /* HAVE_NTGUI */
3527 /* Remember allocated colors. */
3528 img
->ncolors
= attrs
.nalloc_pixels
;
3529 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3530 * sizeof *img
->colors
);
3531 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3533 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3534 #ifdef DEBUG_X_COLORS
3535 register_color (img
->colors
[i
]);
3538 #endif /* not ALLOC_XPM_COLORS */
3540 img
->width
= attrs
.width
;
3541 img
->height
= attrs
.height
;
3542 xassert (img
->width
> 0 && img
->height
> 0);
3544 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3546 fn_XpmFreeAttributes (&attrs
);
3548 XpmFreeAttributes (&attrs
);
3549 #endif /* HAVE_NTGUI */
3555 #endif /* HAVE_NTGUI */
3560 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3563 case XpmFileInvalid
:
3564 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3568 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3571 case XpmColorFailed
:
3572 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3576 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3581 #ifdef ALLOC_XPM_COLORS
3582 xpm_free_color_cache ();
3584 return rc
== XpmSuccess
;
3587 #endif /* HAVE_XPM */
3589 #if defined (HAVE_NS) && !defined (HAVE_XPM)
3591 /* XPM support functions for NS where libxpm is not available.
3592 Only XPM version 3 (without any extensions) is supported. */
3594 static int xpm_scan (const unsigned char **, const unsigned char *,
3595 const unsigned char **, int *);
3596 static Lisp_Object xpm_make_color_table_v
3597 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3598 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3599 static void xpm_put_color_table_v (Lisp_Object
, const unsigned char *,
3601 static Lisp_Object
xpm_get_color_table_v (Lisp_Object
,
3602 const unsigned char *, int);
3603 static Lisp_Object xpm_make_color_table_h
3604 (void (**) (Lisp_Object
, const unsigned char *, int, Lisp_Object
),
3605 Lisp_Object (**) (Lisp_Object
, const unsigned char *, int));
3606 static void xpm_put_color_table_h (Lisp_Object
, const unsigned char *,
3608 static Lisp_Object
xpm_get_color_table_h (Lisp_Object
,
3609 const unsigned char *, int);
3610 static int xpm_str_to_color_key (const char *);
3611 static int xpm_load_image (struct frame
*, struct image
*,
3612 const unsigned char *, const unsigned char *);
3614 /* Tokens returned from xpm_scan. */
3623 /* Scan an XPM data and return a character (< 256) or a token defined
3624 by enum xpm_token above. *S and END are the start (inclusive) and
3625 the end (exclusive) addresses of the data, respectively. Advance
3626 *S while scanning. If token is either XPM_TK_IDENT or
3627 XPM_TK_STRING, *BEG and *LEN are set to the start address and the
3628 length of the corresponding token, respectively. */
3631 xpm_scan (const unsigned char **s
,
3632 const unsigned char *end
,
3633 const unsigned char **beg
,
3640 /* Skip white-space. */
3641 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
3644 /* gnus-pointer.xpm uses '-' in its identifier.
3645 sb-dir-plus.xpm uses '+' in its identifier. */
3646 if (isalpha (c
) || c
== '_' || c
== '-' || c
== '+')
3650 && (c
= **s
, isalnum (c
) || c
== '_' || c
== '-' || c
== '+'))
3653 return XPM_TK_IDENT
;
3658 while (*s
< end
&& **s
!= '"')
3663 return XPM_TK_STRING
;
3667 if (*s
< end
&& **s
== '*')
3669 /* C-style comment. */
3673 while (*s
< end
&& *(*s
)++ != '*')
3676 while (*s
< end
&& **s
!= '/');
3690 /* Functions for color table lookup in XPM data. A key is a string
3691 specifying the color of each pixel in XPM data. A value is either
3692 an integer that specifies a pixel color, Qt that specifies
3693 transparency, or Qnil for the unspecified color. If the length of
3694 the key string is one, a vector is used as a table. Otherwise, a
3695 hash table is used. */
3698 xpm_make_color_table_v (void (**put_func
) (Lisp_Object
,
3699 const unsigned char *,
3702 Lisp_Object (**get_func
) (Lisp_Object
,
3703 const unsigned char *,
3706 *put_func
= xpm_put_color_table_v
;
3707 *get_func
= xpm_get_color_table_v
;
3708 return Fmake_vector (make_number (256), Qnil
);
3712 xpm_put_color_table_v (Lisp_Object color_table
,
3713 const unsigned char *chars_start
,
3717 XVECTOR (color_table
)->contents
[*chars_start
] = color
;
3721 xpm_get_color_table_v (Lisp_Object color_table
,
3722 const unsigned char *chars_start
,
3725 return XVECTOR (color_table
)->contents
[*chars_start
];
3729 xpm_make_color_table_h (void (**put_func
) (Lisp_Object
,
3730 const unsigned char *,
3733 Lisp_Object (**get_func
) (Lisp_Object
,
3734 const unsigned char *,
3737 *put_func
= xpm_put_color_table_h
;
3738 *get_func
= xpm_get_color_table_h
;
3739 return make_hash_table (Qequal
, make_number (DEFAULT_HASH_SIZE
),
3740 make_float (DEFAULT_REHASH_SIZE
),
3741 make_float (DEFAULT_REHASH_THRESHOLD
),
3746 xpm_put_color_table_h (Lisp_Object color_table
,
3747 const unsigned char *chars_start
,
3751 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3752 EMACS_UINT hash_code
;
3753 Lisp_Object chars
= make_unibyte_string (chars_start
, chars_len
);
3755 hash_lookup (table
, chars
, &hash_code
);
3756 hash_put (table
, chars
, color
, hash_code
);
3760 xpm_get_color_table_h (Lisp_Object color_table
,
3761 const unsigned char *chars_start
,
3764 struct Lisp_Hash_Table
*table
= XHASH_TABLE (color_table
);
3765 int i
= hash_lookup (table
, make_unibyte_string (chars_start
, chars_len
),
3768 return i
>= 0 ? HASH_VALUE (table
, i
) : Qnil
;
3771 enum xpm_color_key
{
3779 static const char xpm_color_key_strings
[][4] = {"s", "m", "g4", "g", "c"};
3782 xpm_str_to_color_key (const char *s
)
3787 i
< sizeof xpm_color_key_strings
/ sizeof xpm_color_key_strings
[0];
3789 if (strcmp (xpm_color_key_strings
[i
], s
) == 0)
3795 xpm_load_image (struct frame
*f
,
3797 const unsigned char *contents
,
3798 const unsigned char *end
)
3800 const unsigned char *s
= contents
, *beg
, *str
;
3801 unsigned char buffer
[BUFSIZ
];
3802 int width
, height
, x
, y
;
3803 int num_colors
, chars_per_pixel
;
3805 void (*put_color_table
) (Lisp_Object
, const unsigned char *, int, Lisp_Object
);
3806 Lisp_Object (*get_color_table
) (Lisp_Object
, const unsigned char *, int);
3807 Lisp_Object frame
, color_symbols
, color_table
;
3808 int best_key
, have_mask
= 0;
3809 XImagePtr ximg
= NULL
, mask_img
= NULL
;
3812 LA1 = xpm_scan (&s, end, &beg, &len)
3814 #define expect(TOKEN) \
3815 if (LA1 != (TOKEN)) \
3820 #define expect_ident(IDENT) \
3821 if (LA1 == XPM_TK_IDENT \
3822 && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
3827 if (!(end
- s
>= 9 && memcmp (s
, "/* XPM */", 9) == 0))
3831 expect_ident ("static");
3832 expect_ident ("char");
3834 expect (XPM_TK_IDENT
);
3839 expect (XPM_TK_STRING
);
3842 memcpy (buffer
, beg
, len
);
3844 if (sscanf (buffer
, "%d %d %d %d", &width
, &height
,
3845 &num_colors
, &chars_per_pixel
) != 4
3846 || width
<= 0 || height
<= 0
3847 || num_colors
<= 0 || chars_per_pixel
<= 0)
3850 if (!check_image_size (f
, width
, height
))
3852 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
3858 XSETFRAME (frame
, f
);
3859 if (!NILP (Fxw_display_color_p (frame
)))
3860 best_key
= XPM_COLOR_KEY_C
;
3861 else if (!NILP (Fx_display_grayscale_p (frame
)))
3862 best_key
= (XFASTINT (Fx_display_planes (frame
)) > 2
3863 ? XPM_COLOR_KEY_G
: XPM_COLOR_KEY_G4
);
3865 best_key
= XPM_COLOR_KEY_M
;
3867 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3868 if (chars_per_pixel
== 1)
3869 color_table
= xpm_make_color_table_v (&put_color_table
,
3872 color_table
= xpm_make_color_table_h (&put_color_table
,
3875 while (num_colors
-- > 0)
3877 char *color
, *max_color
;
3878 int key
, next_key
, max_key
= 0;
3879 Lisp_Object symbol_color
= Qnil
, color_val
;
3882 expect (XPM_TK_STRING
);
3883 if (len
<= chars_per_pixel
|| len
>= BUFSIZ
+ chars_per_pixel
)
3885 memcpy (buffer
, beg
+ chars_per_pixel
, len
- chars_per_pixel
);
3886 buffer
[len
- chars_per_pixel
] = '\0';
3888 str
= strtok (buffer
, " \t");
3891 key
= xpm_str_to_color_key (str
);
3896 color
= strtok (NULL
, " \t");
3900 while ((str
= strtok (NULL
, " \t")) != NULL
)
3902 next_key
= xpm_str_to_color_key (str
);
3905 color
[strlen (color
)] = ' ';
3908 if (key
== XPM_COLOR_KEY_S
)
3910 if (NILP (symbol_color
))
3911 symbol_color
= build_string (color
);
3913 else if (max_key
< key
&& key
<= best_key
)
3923 if (!NILP (color_symbols
) && !NILP (symbol_color
))
3925 Lisp_Object specified_color
= Fassoc (symbol_color
, color_symbols
);
3927 if (CONSP (specified_color
) && STRINGP (XCDR (specified_color
)))
3929 if (xstrcasecmp (SSDATA (XCDR (specified_color
)), "None") == 0)
3931 else if (x_defined_color (f
, SDATA (XCDR (specified_color
)),
3933 color_val
= make_number (cdef
.pixel
);
3936 if (NILP (color_val
) && max_key
> 0)
3938 if (xstrcasecmp (max_color
, "None") == 0)
3940 else if (x_defined_color (f
, max_color
, &cdef
, 0))
3941 color_val
= make_number (cdef
.pixel
);
3943 if (!NILP (color_val
))
3944 (*put_color_table
) (color_table
, beg
, chars_per_pixel
, color_val
);
3949 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
3950 &ximg
, &img
->pixmap
)
3952 || !x_create_x_image_and_pixmap (f
, width
, height
, 1,
3953 &mask_img
, &img
->mask
)
3957 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3961 for (y
= 0; y
< height
; y
++)
3963 expect (XPM_TK_STRING
);
3965 if (len
< width
* chars_per_pixel
)
3967 for (x
= 0; x
< width
; x
++, str
+= chars_per_pixel
)
3969 Lisp_Object color_val
=
3970 (*get_color_table
) (color_table
, str
, chars_per_pixel
);
3972 XPutPixel (ximg
, x
, y
,
3973 (INTEGERP (color_val
) ? XINT (color_val
)
3974 : FRAME_FOREGROUND_PIXEL (f
)));
3976 XPutPixel (mask_img
, x
, y
,
3977 (!EQ (color_val
, Qt
) ? PIX_MASK_DRAW
3978 : (have_mask
= 1, PIX_MASK_RETAIN
)));
3980 if (EQ (color_val
, Qt
))
3981 ns_set_alpha (ximg
, x
, y
, 0);
3989 img
->height
= height
;
3991 /* Maybe fill in the background field while we have ximg handy. */
3992 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
3993 IMAGE_BACKGROUND (img
, f
, ximg
);
3995 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
3996 x_destroy_x_image (ximg
);
4000 /* Fill in the background_transparent field while we have the
4002 image_background_transparent (img
, f
, mask_img
);
4004 x_put_x_image (f
, mask_img
, img
->mask
, width
, height
);
4005 x_destroy_x_image (mask_img
);
4009 x_destroy_x_image (mask_img
);
4010 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4011 img
->mask
= NO_PIXMAP
;
4017 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
4019 x_destroy_x_image (ximg
);
4020 x_destroy_x_image (mask_img
);
4021 x_clear_image (f
, img
);
4030 xpm_load (struct frame
*f
,
4034 Lisp_Object file_name
;
4036 /* If IMG->spec specifies a file name, create a non-file spec from it. */
4037 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
4038 if (STRINGP (file_name
))
4041 unsigned char *contents
;
4044 file
= x_find_image_file (file_name
);
4045 if (!STRINGP (file
))
4047 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
4051 contents
= slurp_file (SDATA (file
), &size
);
4052 if (contents
== NULL
)
4054 image_error ("Error loading XPM image `%s'", img
->spec
, Qnil
);
4058 success_p
= xpm_load_image (f
, img
, contents
, contents
+ size
);
4065 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4066 if (!STRINGP (data
))
4068 image_error ("Invalid image data `%s'", data
, Qnil
);
4071 success_p
= xpm_load_image (f
, img
, SDATA (data
),
4072 SDATA (data
) + SBYTES (data
));
4078 #endif /* HAVE_NS && !HAVE_XPM */
4082 /***********************************************************************
4084 ***********************************************************************/
4086 #ifdef COLOR_TABLE_SUPPORT
4088 /* An entry in the color table mapping an RGB color to a pixel color. */
4093 unsigned long pixel
;
4095 /* Next in color table collision list. */
4096 struct ct_color
*next
;
4099 /* The bucket vector size to use. Must be prime. */
4103 /* Value is a hash of the RGB color given by R, G, and B. */
4105 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
4107 /* The color hash table. */
4109 static struct ct_color
**ct_table
;
4111 /* Number of entries in the color table. */
4113 static int ct_colors_allocated
;
4115 /* Initialize the color table. */
4118 init_color_table (void)
4120 int size
= CT_SIZE
* sizeof (*ct_table
);
4121 ct_table
= (struct ct_color
**) xmalloc (size
);
4122 memset (ct_table
, 0, size
);
4123 ct_colors_allocated
= 0;
4127 /* Free memory associated with the color table. */
4130 free_color_table (void)
4133 struct ct_color
*p
, *next
;
4135 for (i
= 0; i
< CT_SIZE
; ++i
)
4136 for (p
= ct_table
[i
]; p
; p
= next
)
4147 /* Value is a pixel color for RGB color R, G, B on frame F. If an
4148 entry for that color already is in the color table, return the
4149 pixel color of that entry. Otherwise, allocate a new color for R,
4150 G, B, and make an entry in the color table. */
4152 static unsigned long
4153 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4155 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
4156 int i
= hash
% CT_SIZE
;
4158 Display_Info
*dpyinfo
;
4160 /* Handle TrueColor visuals specially, which improves performance by
4161 two orders of magnitude. Freeing colors on TrueColor visuals is
4162 a nop, and pixel colors specify RGB values directly. See also
4163 the Xlib spec, chapter 3.1. */
4164 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4165 if (dpyinfo
->red_bits
> 0)
4167 unsigned long pr
, pg
, pb
;
4169 /* Apply gamma-correction like normal color allocation does. */
4173 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
4174 gamma_correct (f
, &color
);
4175 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
4178 /* Scale down RGB values to the visual's bits per RGB, and shift
4179 them to the right position in the pixel color. Note that the
4180 original RGB values are 16-bit values, as usual in X. */
4181 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
4182 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
4183 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
4185 /* Assemble the pixel color. */
4186 return pr
| pg
| pb
;
4189 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4190 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
4196 #ifdef HAVE_X_WINDOWS
4205 cmap
= FRAME_X_COLORMAP (f
);
4206 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4209 ++ct_colors_allocated
;
4210 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4214 p
->pixel
= color
.pixel
;
4215 p
->next
= ct_table
[i
];
4219 return FRAME_FOREGROUND_PIXEL (f
);
4224 color
= PALETTERGB (r
, g
, b
);
4226 color
= RGB_TO_ULONG (r
, g
, b
);
4227 #endif /* HAVE_NTGUI */
4228 ++ct_colors_allocated
;
4229 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4234 p
->next
= ct_table
[i
];
4236 #endif /* HAVE_X_WINDOWS */
4244 /* Look up pixel color PIXEL which is used on frame F in the color
4245 table. If not already present, allocate it. Value is PIXEL. */
4247 static unsigned long
4248 lookup_pixel_color (struct frame
*f
, unsigned long pixel
)
4250 int i
= pixel
% CT_SIZE
;
4253 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4254 if (p
->pixel
== pixel
)
4263 #ifdef HAVE_X_WINDOWS
4264 cmap
= FRAME_X_COLORMAP (f
);
4265 color
.pixel
= pixel
;
4266 x_query_color (f
, &color
);
4267 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4270 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
4271 color
.pixel
= pixel
;
4272 XQueryColor (NULL
, cmap
, &color
);
4273 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
4275 #endif /* HAVE_X_WINDOWS */
4279 ++ct_colors_allocated
;
4281 p
= (struct ct_color
*) xmalloc (sizeof *p
);
4286 p
->next
= ct_table
[i
];
4290 return FRAME_FOREGROUND_PIXEL (f
);
4296 /* Value is a vector of all pixel colors contained in the color table,
4297 allocated via xmalloc. Set *N to the number of colors. */
4299 static unsigned long *
4300 colors_in_color_table (int *n
)
4304 unsigned long *colors
;
4306 if (ct_colors_allocated
== 0)
4313 colors
= (unsigned long *) xmalloc (ct_colors_allocated
4315 *n
= ct_colors_allocated
;
4317 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4318 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4319 colors
[j
++] = p
->pixel
;
4325 #else /* COLOR_TABLE_SUPPORT */
4327 static unsigned long
4328 lookup_rgb_color (struct frame
*f
, int r
, int g
, int b
)
4330 unsigned long pixel
;
4333 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4334 #endif /* HAVE_NTGUI */
4337 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4338 #endif /* HAVE_NS */
4343 init_color_table (void)
4346 #endif /* COLOR_TABLE_SUPPORT */
4349 /***********************************************************************
4351 ***********************************************************************/
4353 static XColor
*x_to_xcolors (struct frame
*, struct image
*, int);
4354 static void x_from_xcolors (struct frame
*, struct image
*, XColor
*);
4355 static void x_detect_edges (struct frame
*, struct image
*, int[9], int);
4358 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4359 #endif /* HAVE_NTGUI */
4361 /* Edge detection matrices for different edge-detection
4364 static int emboss_matrix
[9] = {
4366 2, -1, 0, /* y - 1 */
4368 0, 1, -2 /* y + 1 */
4371 static int laplace_matrix
[9] = {
4373 1, 0, 0, /* y - 1 */
4375 0, 0, -1 /* y + 1 */
4378 /* Value is the intensity of the color whose red/green/blue values
4381 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4384 /* On frame F, return an array of XColor structures describing image
4385 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4386 non-zero means also fill the red/green/blue members of the XColor
4387 structures. Value is a pointer to the array of XColors structures,
4388 allocated with xmalloc; it must be freed by the caller. */
4391 x_to_xcolors (struct frame
*f
, struct image
*img
, int rgb_p
)
4395 XImagePtr_or_DC ximg
;
4399 #endif /* HAVE_NTGUI */
4401 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4404 /* Get the X image IMG->pixmap. */
4405 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4406 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4408 /* Load the image into a memory device context. */
4409 hdc
= get_frame_dc (f
);
4410 ximg
= CreateCompatibleDC (hdc
);
4411 release_frame_dc (f
, hdc
);
4412 prev
= SelectObject (ximg
, img
->pixmap
);
4413 #endif /* HAVE_NTGUI */
4415 /* Fill the `pixel' members of the XColor array. I wished there
4416 were an easy and portable way to circumvent XGetPixel. */
4418 for (y
= 0; y
< img
->height
; ++y
)
4422 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
4423 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4424 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4426 x_query_colors (f
, row
, img
->width
);
4430 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4432 /* W32_TODO: palette support needed here? */
4433 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4436 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4437 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4438 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4441 #endif /* HAVE_X_WINDOWS */
4444 Destroy_Image (ximg
, prev
);
4451 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4452 created with CreateDIBSection, with the pointer to the bit values
4453 stored in ximg->data. */
4456 XPutPixel (XImagePtr ximg
, int x
, int y
, COLORREF color
)
4458 int width
= ximg
->info
.bmiHeader
.biWidth
;
4459 unsigned char * pixel
;
4461 /* True color images. */
4462 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4464 int rowbytes
= width
* 3;
4465 /* Ensure scanlines are aligned on 4 byte boundaries. */
4467 rowbytes
+= 4 - (rowbytes
% 4);
4469 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4470 /* Windows bitmaps are in BGR order. */
4471 *pixel
= GetBValue (color
);
4472 *(pixel
+ 1) = GetGValue (color
);
4473 *(pixel
+ 2) = GetRValue (color
);
4475 /* Monochrome images. */
4476 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4478 int rowbytes
= width
/ 8;
4479 /* Ensure scanlines are aligned on 4 byte boundaries. */
4481 rowbytes
+= 4 - (rowbytes
% 4);
4482 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4483 /* Filter out palette info. */
4484 if (color
& 0x00ffffff)
4485 *pixel
= *pixel
| (1 << x
% 8);
4487 *pixel
= *pixel
& ~(1 << x
% 8);
4490 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4493 #endif /* HAVE_NTGUI */
4495 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4496 RGB members are set. F is the frame on which this all happens.
4497 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4500 x_from_xcolors (struct frame
*f
, struct image
*img
, XColor
*colors
)
4503 XImagePtr oimg
= NULL
;
4507 init_color_table ();
4509 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4512 for (y
= 0; y
< img
->height
; ++y
)
4513 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4515 unsigned long pixel
;
4516 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4517 XPutPixel (oimg
, x
, y
, pixel
);
4521 x_clear_image_1 (f
, img
, 1, 0, 1);
4523 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4524 x_destroy_x_image (oimg
);
4525 img
->pixmap
= pixmap
;
4526 #ifdef COLOR_TABLE_SUPPORT
4527 img
->colors
= colors_in_color_table (&img
->ncolors
);
4528 free_color_table ();
4529 #endif /* COLOR_TABLE_SUPPORT */
4533 /* On frame F, perform edge-detection on image IMG.
4535 MATRIX is a nine-element array specifying the transformation
4536 matrix. See emboss_matrix for an example.
4538 COLOR_ADJUST is a color adjustment added to each pixel of the
4542 x_detect_edges (struct frame
*f
, struct image
*img
, int *matrix
, int color_adjust
)
4544 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4548 for (i
= sum
= 0; i
< 9; ++i
)
4549 sum
+= eabs (matrix
[i
]);
4551 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4553 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4555 for (y
= 0; y
< img
->height
; ++y
)
4557 p
= COLOR (new, 0, y
);
4558 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4559 p
= COLOR (new, img
->width
- 1, y
);
4560 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4563 for (x
= 1; x
< img
->width
- 1; ++x
)
4565 p
= COLOR (new, x
, 0);
4566 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4567 p
= COLOR (new, x
, img
->height
- 1);
4568 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4571 for (y
= 1; y
< img
->height
- 1; ++y
)
4573 p
= COLOR (new, 1, y
);
4575 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4577 int r
, g
, b
, yy
, xx
;
4580 for (yy
= y
- 1; yy
< y
+ 2; ++yy
)
4581 for (xx
= x
- 1; xx
< x
+ 2; ++xx
, ++i
)
4584 XColor
*t
= COLOR (colors
, xx
, yy
);
4585 r
+= matrix
[i
] * t
->red
;
4586 g
+= matrix
[i
] * t
->green
;
4587 b
+= matrix
[i
] * t
->blue
;
4590 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4591 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4592 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4593 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4598 x_from_xcolors (f
, img
, new);
4604 /* Perform the pre-defined `emboss' edge-detection on image IMG
4608 x_emboss (struct frame
*f
, struct image
*img
)
4610 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4614 /* Transform image IMG which is used on frame F with a Laplace
4615 edge-detection algorithm. The result is an image that can be used
4616 to draw disabled buttons, for example. */
4619 x_laplace (struct frame
*f
, struct image
*img
)
4621 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4625 /* Perform edge-detection on image IMG on frame F, with specified
4626 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4628 MATRIX must be either
4630 - a list of at least 9 numbers in row-major form
4631 - a vector of at least 9 numbers
4633 COLOR_ADJUST nil means use a default; otherwise it must be a
4637 x_edge_detection (struct frame
*f
, struct image
*img
, Lisp_Object matrix
,
4638 Lisp_Object color_adjust
)
4646 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4647 ++i
, matrix
= XCDR (matrix
))
4648 trans
[i
] = XFLOATINT (XCAR (matrix
));
4650 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4652 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4653 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4656 if (NILP (color_adjust
))
4657 color_adjust
= make_number (0xffff / 2);
4659 if (i
== 9 && NUMBERP (color_adjust
))
4660 x_detect_edges (f
, img
, trans
, XFLOATINT (color_adjust
));
4664 /* Transform image IMG on frame F so that it looks disabled. */
4667 x_disable_image (struct frame
*f
, struct image
*img
)
4669 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4671 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4673 int n_planes
= dpyinfo
->n_planes
;
4674 #endif /* HAVE_NTGUI */
4678 /* Color (or grayscale). Convert to gray, and equalize. Just
4679 drawing such images with a stipple can look very odd, so
4680 we're using this method instead. */
4681 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4683 const int h
= 15000;
4684 const int l
= 30000;
4686 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4690 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4691 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4692 p
->red
= p
->green
= p
->blue
= i2
;
4695 x_from_xcolors (f
, img
, colors
);
4698 /* Draw a cross over the disabled image, if we must or if we
4700 if (n_planes
< 2 || cross_disabled_images
)
4703 Display
*dpy
= FRAME_X_DISPLAY (f
);
4706 #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */
4708 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4710 gc
= XCreateGC (dpy
, img
->pixmap
, 0, NULL
);
4711 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4712 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4713 img
->width
- 1, img
->height
- 1);
4714 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4720 gc
= XCreateGC (dpy
, img
->mask
, 0, NULL
);
4721 XSetForeground (dpy
, gc
, MaskForeground (f
));
4722 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4723 img
->width
- 1, img
->height
- 1);
4724 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4728 #endif /* !HAVE_NS */
4733 hdc
= get_frame_dc (f
);
4734 bmpdc
= CreateCompatibleDC (hdc
);
4735 release_frame_dc (f
, hdc
);
4737 prev
= SelectObject (bmpdc
, img
->pixmap
);
4739 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4740 MoveToEx (bmpdc
, 0, 0, NULL
);
4741 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4742 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4743 LineTo (bmpdc
, img
->width
- 1, 0);
4747 SelectObject (bmpdc
, img
->mask
);
4748 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4749 MoveToEx (bmpdc
, 0, 0, NULL
);
4750 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4751 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4752 LineTo (bmpdc
, img
->width
- 1, 0);
4754 SelectObject (bmpdc
, prev
);
4756 #endif /* HAVE_NTGUI */
4761 /* Build a mask for image IMG which is used on frame F. FILE is the
4762 name of an image file, for error messages. HOW determines how to
4763 determine the background color of IMG. If it is a list '(R G B)',
4764 with R, G, and B being integers >= 0, take that as the color of the
4765 background. Otherwise, determine the background color of IMG
4766 heuristically. Value is non-zero if successful. */
4769 x_build_heuristic_mask (struct frame
*f
, struct image
*img
, Lisp_Object how
)
4771 XImagePtr_or_DC ximg
;
4779 #endif /* HAVE_NTGUI */
4780 int x
, y
, rc
, use_img_background
;
4781 unsigned long bg
= 0;
4785 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4786 img
->mask
= NO_PIXMAP
;
4787 img
->background_transparent_valid
= 0;
4792 /* Create an image and pixmap serving as mask. */
4793 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4794 &mask_img
, &img
->mask
);
4797 #endif /* !HAVE_NS */
4799 /* Get the X image of IMG->pixmap. */
4800 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4801 img
->width
, img
->height
,
4804 /* Create the bit array serving as mask. */
4805 row_width
= (img
->width
+ 7) / 8;
4806 mask_img
= xmalloc (row_width
* img
->height
);
4807 memset (mask_img
, 0, row_width
* img
->height
);
4809 /* Create a memory device context for IMG->pixmap. */
4810 frame_dc
= get_frame_dc (f
);
4811 ximg
= CreateCompatibleDC (frame_dc
);
4812 release_frame_dc (f
, frame_dc
);
4813 prev
= SelectObject (ximg
, img
->pixmap
);
4814 #endif /* HAVE_NTGUI */
4816 /* Determine the background color of ximg. If HOW is `(R G B)'
4817 take that as color. Otherwise, use the image's background color. */
4818 use_img_background
= 1;
4824 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4826 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4830 if (i
== 3 && NILP (how
))
4832 char color_name
[30];
4833 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4836 0x00ffffff & /* Filter out palette info. */
4837 #endif /* HAVE_NTGUI */
4838 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4839 use_img_background
= 0;
4843 if (use_img_background
)
4844 bg
= four_corners_best (ximg
, img
->corners
, img
->width
, img
->height
);
4846 /* Set all bits in mask_img to 1 whose color in ximg is different
4847 from the background color bg. */
4849 for (y
= 0; y
< img
->height
; ++y
)
4850 for (x
= 0; x
< img
->width
; ++x
)
4852 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4853 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
));
4855 if (XGetPixel (ximg
, x
, y
) == bg
)
4856 ns_set_alpha (ximg
, x
, y
, 0);
4857 #endif /* HAVE_NS */
4859 /* Fill in the background_transparent field while we have the mask handy. */
4860 image_background_transparent (img
, f
, mask_img
);
4862 /* Put mask_img into img->mask. */
4863 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4864 x_destroy_x_image (mask_img
);
4865 #endif /* !HAVE_NS */
4867 for (y
= 0; y
< img
->height
; ++y
)
4868 for (x
= 0; x
< img
->width
; ++x
)
4870 COLORREF p
= GetPixel (ximg
, x
, y
);
4872 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4875 /* Create the mask image. */
4876 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4878 /* Fill in the background_transparent field while we have the mask handy. */
4879 SelectObject (ximg
, img
->mask
);
4880 image_background_transparent (img
, f
, ximg
);
4882 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4884 #endif /* HAVE_NTGUI */
4886 Destroy_Image (ximg
, prev
);
4892 /***********************************************************************
4893 PBM (mono, gray, color)
4894 ***********************************************************************/
4896 static int pbm_image_p (Lisp_Object object
);
4897 static int pbm_load (struct frame
*f
, struct image
*img
);
4898 static int pbm_scan_number (unsigned char **, unsigned char *);
4900 /* The symbol `pbm' identifying images of this type. */
4902 static Lisp_Object Qpbm
;
4904 /* Indices of image specification fields in gs_format, below. */
4906 enum pbm_keyword_index
4922 /* Vector of image_keyword structures describing the format
4923 of valid user-defined image specifications. */
4925 static const struct image_keyword pbm_format
[PBM_LAST
] =
4927 {":type", IMAGE_SYMBOL_VALUE
, 1},
4928 {":file", IMAGE_STRING_VALUE
, 0},
4929 {":data", IMAGE_STRING_VALUE
, 0},
4930 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4931 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4932 {":relief", IMAGE_INTEGER_VALUE
, 0},
4933 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4934 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4935 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4936 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4937 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4940 /* Structure describing the image type `pbm'. */
4942 static struct image_type pbm_type
=
4952 /* Return non-zero if OBJECT is a valid PBM image specification. */
4955 pbm_image_p (Lisp_Object object
)
4957 struct image_keyword fmt
[PBM_LAST
];
4959 memcpy (fmt
, pbm_format
, sizeof fmt
);
4961 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4964 /* Must specify either :data or :file. */
4965 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4969 /* Scan a decimal number from *S and return it. Advance *S while
4970 reading the number. END is the end of the string. Value is -1 at
4974 pbm_scan_number (unsigned char **s
, unsigned char *end
)
4976 int c
= 0, val
= -1;
4980 /* Skip white-space. */
4981 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4986 /* Skip comment to end of line. */
4987 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
4990 else if (isdigit (c
))
4992 /* Read decimal number. */
4994 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
4995 val
= 10 * val
+ c
- '0';
5007 #if 0 /* Unused. ++kfs */
5009 /* Read FILE into memory. Value is a pointer to a buffer allocated
5010 with xmalloc holding FILE's contents. Value is null if an error
5011 occurred. *SIZE is set to the size of the file. */
5014 pbm_read_file (file
, size
)
5022 if (stat (SDATA (file
), &st
) == 0
5023 && (fp
= fopen (SDATA (file
), "rb")) != NULL
5024 && (buf
= (char *) xmalloc (st
.st_size
),
5025 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
5044 #endif /* HAVE_NTGUI */
5046 /* Load PBM image IMG for use on frame F. */
5049 pbm_load (struct frame
*f
, struct image
*img
)
5052 int width
, height
, max_color_idx
= 0;
5054 Lisp_Object file
, specified_file
;
5055 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
5056 unsigned char *contents
= NULL
;
5057 unsigned char *end
, *p
;
5060 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5062 if (STRINGP (specified_file
))
5064 file
= x_find_image_file (specified_file
);
5065 if (!STRINGP (file
))
5067 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5071 contents
= slurp_file (SSDATA (file
), &size
);
5072 if (contents
== NULL
)
5074 image_error ("Error reading `%s'", file
, Qnil
);
5079 end
= contents
+ size
;
5084 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5085 if (!STRINGP (data
))
5087 image_error ("Invalid image data `%s'", data
, Qnil
);
5091 end
= p
+ SBYTES (data
);
5094 /* Check magic number. */
5095 if (end
- p
< 2 || *p
++ != 'P')
5097 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5106 raw_p
= 0, type
= PBM_MONO
;
5110 raw_p
= 0, type
= PBM_GRAY
;
5114 raw_p
= 0, type
= PBM_COLOR
;
5118 raw_p
= 1, type
= PBM_MONO
;
5122 raw_p
= 1, type
= PBM_GRAY
;
5126 raw_p
= 1, type
= PBM_COLOR
;
5130 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
5134 /* Read width, height, maximum color-component. Characters
5135 starting with `#' up to the end of a line are ignored. */
5136 width
= pbm_scan_number (&p
, end
);
5137 height
= pbm_scan_number (&p
, end
);
5139 if (type
!= PBM_MONO
)
5141 max_color_idx
= pbm_scan_number (&p
, end
);
5142 if (max_color_idx
> 65535 || max_color_idx
< 0)
5144 image_error ("Unsupported maximum PBM color value", Qnil
, Qnil
);
5149 if (!check_image_size (f
, width
, height
))
5151 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5155 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
5156 &ximg
, &img
->pixmap
))
5159 /* Initialize the color hash table. */
5160 init_color_table ();
5162 if (type
== PBM_MONO
)
5165 struct image_keyword fmt
[PBM_LAST
];
5166 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
5167 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
5169 /* Parse the image specification. */
5170 memcpy (fmt
, pbm_format
, sizeof fmt
);
5171 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
5173 /* Get foreground and background colors, maybe allocate colors. */
5174 if (fmt
[PBM_FOREGROUND
].count
5175 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
5176 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
5177 if (fmt
[PBM_BACKGROUND
].count
5178 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
5180 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
5181 img
->background
= bg
;
5182 img
->background_valid
= 1;
5185 for (y
= 0; y
< height
; ++y
)
5186 for (x
= 0; x
< width
; ++x
)
5194 x_destroy_x_image (ximg
);
5195 x_clear_image (f
, img
);
5196 image_error ("Invalid image size in image `%s'",
5206 g
= pbm_scan_number (&p
, end
);
5208 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
5213 int expected_size
= height
* width
;
5214 if (max_color_idx
> 255)
5216 if (type
== PBM_COLOR
)
5219 if (raw_p
&& p
+ expected_size
> end
)
5221 x_destroy_x_image (ximg
);
5222 x_clear_image (f
, img
);
5223 image_error ("Invalid image size in image `%s'",
5228 for (y
= 0; y
< height
; ++y
)
5229 for (x
= 0; x
< width
; ++x
)
5233 if (type
== PBM_GRAY
&& raw_p
)
5236 if (max_color_idx
> 255)
5237 r
= g
= b
= r
* 256 + *p
++;
5239 else if (type
== PBM_GRAY
)
5240 r
= g
= b
= pbm_scan_number (&p
, end
);
5244 if (max_color_idx
> 255)
5247 if (max_color_idx
> 255)
5250 if (max_color_idx
> 255)
5255 r
= pbm_scan_number (&p
, end
);
5256 g
= pbm_scan_number (&p
, end
);
5257 b
= pbm_scan_number (&p
, end
);
5260 if (r
< 0 || g
< 0 || b
< 0)
5262 x_destroy_x_image (ximg
);
5263 image_error ("Invalid pixel value in image `%s'",
5268 /* RGB values are now in the range 0..max_color_idx.
5269 Scale this to the range 0..0xffff supported by X. */
5270 r
= (double) r
* 65535 / max_color_idx
;
5271 g
= (double) g
* 65535 / max_color_idx
;
5272 b
= (double) b
* 65535 / max_color_idx
;
5273 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5277 #ifdef COLOR_TABLE_SUPPORT
5278 /* Store in IMG->colors the colors allocated for the image, and
5279 free the color table. */
5280 img
->colors
= colors_in_color_table (&img
->ncolors
);
5281 free_color_table ();
5282 #endif /* COLOR_TABLE_SUPPORT */
5285 img
->height
= height
;
5287 /* Maybe fill in the background field while we have ximg handy. */
5289 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5290 /* Casting avoids a GCC warning. */
5291 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5293 /* Put the image into a pixmap. */
5294 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5295 x_destroy_x_image (ximg
);
5297 /* X and W32 versions did it here, MAC version above. ++kfs
5299 img->height = height; */
5306 /***********************************************************************
5308 ***********************************************************************/
5310 #if defined (HAVE_PNG) || defined (HAVE_NS)
5312 /* Function prototypes. */
5314 static int png_image_p (Lisp_Object object
);
5315 static int png_load (struct frame
*f
, struct image
*img
);
5317 /* The symbol `png' identifying images of this type. */
5319 static Lisp_Object Qpng
;
5321 /* Indices of image specification fields in png_format, below. */
5323 enum png_keyword_index
5338 /* Vector of image_keyword structures describing the format
5339 of valid user-defined image specifications. */
5341 static const struct image_keyword png_format
[PNG_LAST
] =
5343 {":type", IMAGE_SYMBOL_VALUE
, 1},
5344 {":data", IMAGE_STRING_VALUE
, 0},
5345 {":file", IMAGE_STRING_VALUE
, 0},
5346 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5347 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5348 {":relief", IMAGE_INTEGER_VALUE
, 0},
5349 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5350 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5351 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5352 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5355 /* Structure describing the image type `png'. */
5357 static struct image_type png_type
=
5366 /* Return non-zero if OBJECT is a valid PNG image specification. */
5369 png_image_p (Lisp_Object object
)
5371 struct image_keyword fmt
[PNG_LAST
];
5372 memcpy (fmt
, png_format
, sizeof fmt
);
5374 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5377 /* Must specify either the :data or :file keyword. */
5378 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5381 #endif /* HAVE_PNG || HAVE_NS */
5387 /* PNG library details. */
5389 DEF_IMGLIB_FN (png_voidp
, png_get_io_ptr
, (png_structp
));
5390 DEF_IMGLIB_FN (int, png_sig_cmp
, (png_bytep
, png_size_t
, png_size_t
));
5391 DEF_IMGLIB_FN (png_structp
, png_create_read_struct
, (png_const_charp
, png_voidp
,
5392 png_error_ptr
, png_error_ptr
));
5393 DEF_IMGLIB_FN (png_infop
, png_create_info_struct
, (png_structp
));
5394 DEF_IMGLIB_FN (void, png_destroy_read_struct
, (png_structpp
, png_infopp
, png_infopp
));
5395 DEF_IMGLIB_FN (void, png_set_read_fn
, (png_structp
, png_voidp
, png_rw_ptr
));
5396 DEF_IMGLIB_FN (void, png_set_sig_bytes
, (png_structp
, int));
5397 DEF_IMGLIB_FN (void, png_read_info
, (png_structp
, png_infop
));
5398 DEF_IMGLIB_FN (png_uint_32
, png_get_IHDR
, (png_structp
, png_infop
,
5399 png_uint_32
*, png_uint_32
*,
5400 int *, int *, int *, int *, int *));
5401 DEF_IMGLIB_FN (png_uint_32
, png_get_valid
, (png_structp
, png_infop
, png_uint_32
));
5402 DEF_IMGLIB_FN (void, png_set_strip_16
, (png_structp
));
5403 DEF_IMGLIB_FN (void, png_set_expand
, (png_structp
));
5404 DEF_IMGLIB_FN (void, png_set_gray_to_rgb
, (png_structp
));
5405 DEF_IMGLIB_FN (void, png_set_background
, (png_structp
, png_color_16p
,
5407 DEF_IMGLIB_FN (png_uint_32
, png_get_bKGD
, (png_structp
, png_infop
, png_color_16p
*));
5408 DEF_IMGLIB_FN (void, png_read_update_info
, (png_structp
, png_infop
));
5409 DEF_IMGLIB_FN (png_byte
, png_get_channels
, (png_structp
, png_infop
));
5410 DEF_IMGLIB_FN (png_size_t
, png_get_rowbytes
, (png_structp
, png_infop
));
5411 DEF_IMGLIB_FN (void, png_read_image
, (png_structp
, png_bytepp
));
5412 DEF_IMGLIB_FN (void, png_read_end
, (png_structp
, png_infop
));
5413 DEF_IMGLIB_FN (void, png_error
, (png_structp
, png_const_charp
));
5415 #if (PNG_LIBPNG_VER >= 10500)
5416 DEF_IMGLIB_FN (void, png_longjmp
, (png_structp
, int));
5417 DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn
, (png_structp
, png_longjmp_ptr
, size_t));
5418 #endif /* libpng version >= 1.5 */
5421 init_png_functions (Lisp_Object libraries
)
5425 if (!(library
= w32_delayed_load (libraries
, Qpng
)))
5428 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5429 LOAD_IMGLIB_FN (library
, png_sig_cmp
);
5430 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5431 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5432 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5433 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5434 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5435 LOAD_IMGLIB_FN (library
, png_read_info
);
5436 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5437 LOAD_IMGLIB_FN (library
, png_get_valid
);
5438 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5439 LOAD_IMGLIB_FN (library
, png_set_expand
);
5440 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5441 LOAD_IMGLIB_FN (library
, png_set_background
);
5442 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5443 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5444 LOAD_IMGLIB_FN (library
, png_get_channels
);
5445 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5446 LOAD_IMGLIB_FN (library
, png_read_image
);
5447 LOAD_IMGLIB_FN (library
, png_read_end
);
5448 LOAD_IMGLIB_FN (library
, png_error
);
5450 #if (PNG_LIBPNG_VER >= 10500)
5451 LOAD_IMGLIB_FN (library
, png_longjmp
);
5452 LOAD_IMGLIB_FN (library
, png_set_longjmp_fn
);
5453 #endif /* libpng version >= 1.5 */
5459 #define fn_png_get_io_ptr png_get_io_ptr
5460 #define fn_png_sig_cmp png_sig_cmp
5461 #define fn_png_create_read_struct png_create_read_struct
5462 #define fn_png_create_info_struct png_create_info_struct
5463 #define fn_png_destroy_read_struct png_destroy_read_struct
5464 #define fn_png_set_read_fn png_set_read_fn
5465 #define fn_png_set_sig_bytes png_set_sig_bytes
5466 #define fn_png_read_info png_read_info
5467 #define fn_png_get_IHDR png_get_IHDR
5468 #define fn_png_get_valid png_get_valid
5469 #define fn_png_set_strip_16 png_set_strip_16
5470 #define fn_png_set_expand png_set_expand
5471 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5472 #define fn_png_set_background png_set_background
5473 #define fn_png_get_bKGD png_get_bKGD
5474 #define fn_png_read_update_info png_read_update_info
5475 #define fn_png_get_channels png_get_channels
5476 #define fn_png_get_rowbytes png_get_rowbytes
5477 #define fn_png_read_image png_read_image
5478 #define fn_png_read_end png_read_end
5479 #define fn_png_error png_error
5481 #if (PNG_LIBPNG_VER >= 10500)
5482 #define fn_png_longjmp png_longjmp
5483 #define fn_png_set_longjmp_fn png_set_longjmp_fn
5484 #endif /* libpng version >= 1.5 */
5486 #endif /* HAVE_NTGUI */
5489 #if (PNG_LIBPNG_VER < 10500)
5490 #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1))
5491 #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf)
5493 /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */
5494 #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1))
5495 #define PNG_JMPBUF(ptr) \
5496 (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf)))
5499 /* Error and warning handlers installed when the PNG library
5502 static void my_png_error (png_struct
*, const char *) NO_RETURN
;
5504 my_png_error (png_struct
*png_ptr
, const char *msg
)
5506 xassert (png_ptr
!= NULL
);
5507 /* Avoid compiler warning about deprecated direct access to
5508 png_ptr's fields in libpng versions 1.4.x. */
5509 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5510 PNG_LONGJMP (png_ptr
);
5515 my_png_warning (png_struct
*png_ptr
, const char *msg
)
5517 xassert (png_ptr
!= NULL
);
5518 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5521 /* Memory source for PNG decoding. */
5523 struct png_memory_storage
5525 unsigned char *bytes
; /* The data */
5526 size_t len
; /* How big is it? */
5527 int index
; /* Where are we? */
5531 /* Function set as reader function when reading PNG image from memory.
5532 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5533 bytes from the input to DATA. */
5536 png_read_from_memory (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5538 struct png_memory_storage
*tbr
5539 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5541 if (length
> tbr
->len
- tbr
->index
)
5542 fn_png_error (png_ptr
, "Read error");
5544 memcpy (data
, tbr
->bytes
+ tbr
->index
, length
);
5545 tbr
->index
= tbr
->index
+ length
;
5549 /* Function set as reader function when reading PNG image from a file.
5550 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5551 bytes from the input to DATA. */
5554 png_read_from_file (png_structp png_ptr
, png_bytep data
, png_size_t length
)
5556 FILE *fp
= (FILE *) fn_png_get_io_ptr (png_ptr
);
5558 if (fread (data
, 1, length
, fp
) < length
)
5559 fn_png_error (png_ptr
, "Read error");
5563 /* Load PNG image IMG for use on frame F. Value is non-zero if
5567 png_load (struct frame
*f
, struct image
*img
)
5569 Lisp_Object file
, specified_file
;
5570 Lisp_Object specified_data
;
5572 XImagePtr ximg
, mask_img
= NULL
;
5573 png_struct
*png_ptr
= NULL
;
5574 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5575 FILE *volatile fp
= NULL
;
5577 png_byte
* volatile pixels
= NULL
;
5578 png_byte
** volatile rows
= NULL
;
5579 png_uint_32 width
, height
;
5580 int bit_depth
, color_type
, interlace_type
;
5582 png_uint_32 row_bytes
;
5584 struct png_memory_storage tbr
; /* Data to be read */
5586 /* Find out what file to load. */
5587 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5588 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5590 if (NILP (specified_data
))
5592 file
= x_find_image_file (specified_file
);
5593 if (!STRINGP (file
))
5595 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5599 /* Open the image file. */
5600 fp
= fopen (SSDATA (file
), "rb");
5603 image_error ("Cannot open image file `%s'", file
, Qnil
);
5607 /* Check PNG signature. */
5608 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5609 || fn_png_sig_cmp (sig
, 0, sizeof sig
))
5611 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5618 if (!STRINGP (specified_data
))
5620 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
5624 /* Read from memory. */
5625 tbr
.bytes
= SDATA (specified_data
);
5626 tbr
.len
= SBYTES (specified_data
);
5629 /* Check PNG signature. */
5630 if (tbr
.len
< sizeof sig
5631 || fn_png_sig_cmp (tbr
.bytes
, 0, sizeof sig
))
5633 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5637 /* Need to skip past the signature. */
5638 tbr
.bytes
+= sizeof (sig
);
5641 /* Initialize read and info structs for PNG lib. */
5642 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
,
5647 if (fp
) fclose (fp
);
5651 info_ptr
= fn_png_create_info_struct (png_ptr
);
5654 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5655 if (fp
) fclose (fp
);
5659 end_info
= fn_png_create_info_struct (png_ptr
);
5662 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5663 if (fp
) fclose (fp
);
5667 /* Set error jump-back. We come back here when the PNG library
5668 detects an error. */
5669 if (setjmp (PNG_JMPBUF (png_ptr
)))
5673 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5676 if (fp
) fclose (fp
);
5680 /* Read image info. */
5681 if (!NILP (specified_data
))
5682 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5684 fn_png_set_read_fn (png_ptr
, (void *) fp
, png_read_from_file
);
5686 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5687 fn_png_read_info (png_ptr
, info_ptr
);
5688 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5689 &interlace_type
, NULL
, NULL
);
5691 if (!check_image_size (f
, width
, height
))
5693 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
5696 /* If image contains simply transparency data, we prefer to
5697 construct a clipping mask. */
5698 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5703 /* This function is easier to write if we only have to handle
5704 one data format: RGB or RGBA with 8 bits per channel. Let's
5705 transform other formats into that format. */
5707 /* Strip more than 8 bits per channel. */
5708 if (bit_depth
== 16)
5709 fn_png_set_strip_16 (png_ptr
);
5711 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5713 fn_png_set_expand (png_ptr
);
5715 /* Convert grayscale images to RGB. */
5716 if (color_type
== PNG_COLOR_TYPE_GRAY
5717 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5718 fn_png_set_gray_to_rgb (png_ptr
);
5720 /* Handle alpha channel by combining the image with a background
5721 color. Do this only if a real alpha channel is supplied. For
5722 simple transparency, we prefer a clipping mask. */
5725 /* png_color_16 *image_bg; */
5726 Lisp_Object specified_bg
5727 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5728 int shift
= (bit_depth
== 16) ? 0 : 8;
5730 if (STRINGP (specified_bg
))
5731 /* The user specified `:background', use that. */
5734 if (x_defined_color (f
, SSDATA (specified_bg
), &color
, 0))
5736 png_color_16 user_bg
;
5738 memset (&user_bg
, 0, sizeof user_bg
);
5739 user_bg
.red
= color
.red
>> shift
;
5740 user_bg
.green
= color
.green
>> shift
;
5741 user_bg
.blue
= color
.blue
>> shift
;
5743 fn_png_set_background (png_ptr
, &user_bg
,
5744 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5749 /* We use the current frame background, ignoring any default
5750 background color set by the image. */
5751 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
5753 png_color_16 frame_background
;
5755 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5756 x_query_color (f
, &color
);
5758 memset (&frame_background
, 0, sizeof frame_background
);
5759 frame_background
.red
= color
.red
>> shift
;
5760 frame_background
.green
= color
.green
>> shift
;
5761 frame_background
.blue
= color
.blue
>> shift
;
5762 #endif /* HAVE_X_WINDOWS */
5764 fn_png_set_background (png_ptr
, &frame_background
,
5765 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5769 /* Update info structure. */
5770 fn_png_read_update_info (png_ptr
, info_ptr
);
5772 /* Get number of channels. Valid values are 1 for grayscale images
5773 and images with a palette, 2 for grayscale images with transparency
5774 information (alpha channel), 3 for RGB images, and 4 for RGB
5775 images with alpha channel, i.e. RGBA. If conversions above were
5776 sufficient we should only have 3 or 4 channels here. */
5777 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5778 xassert (channels
== 3 || channels
== 4);
5780 /* Number of bytes needed for one row of the image. */
5781 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5783 /* Allocate memory for the image. */
5784 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5785 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5786 for (i
= 0; i
< height
; ++i
)
5787 rows
[i
] = pixels
+ i
* row_bytes
;
5789 /* Read the entire image. */
5790 fn_png_read_image (png_ptr
, rows
);
5791 fn_png_read_end (png_ptr
, info_ptr
);
5798 /* Create the X image and pixmap. */
5799 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5803 /* Create an image and pixmap serving as mask if the PNG image
5804 contains an alpha channel. */
5807 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5808 &mask_img
, &img
->mask
))
5810 x_destroy_x_image (ximg
);
5811 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5812 img
->pixmap
= NO_PIXMAP
;
5816 /* Fill the X image and mask from PNG data. */
5817 init_color_table ();
5819 for (y
= 0; y
< height
; ++y
)
5821 png_byte
*p
= rows
[y
];
5823 for (x
= 0; x
< width
; ++x
)
5830 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5831 /* An alpha channel, aka mask channel, associates variable
5832 transparency with an image. Where other image formats
5833 support binary transparency---fully transparent or fully
5834 opaque---PNG allows up to 254 levels of partial transparency.
5835 The PNG library implements partial transparency by combining
5836 the image with a specified background color.
5838 I'm not sure how to handle this here nicely: because the
5839 background on which the image is displayed may change, for
5840 real alpha channel support, it would be necessary to create
5841 a new image for each possible background.
5843 What I'm doing now is that a mask is created if we have
5844 boolean transparency information. Otherwise I'm using
5845 the frame's background color to combine the image with. */
5850 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW
: PIX_MASK_RETAIN
);
5856 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5857 /* Set IMG's background color from the PNG image, unless the user
5861 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5863 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5864 img
->background_valid
= 1;
5868 #ifdef COLOR_TABLE_SUPPORT
5869 /* Remember colors allocated for this image. */
5870 img
->colors
= colors_in_color_table (&img
->ncolors
);
5871 free_color_table ();
5872 #endif /* COLOR_TABLE_SUPPORT */
5875 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5880 img
->height
= height
;
5882 /* Maybe fill in the background field while we have ximg handy.
5883 Casting avoids a GCC warning. */
5884 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
5886 /* Put the image into the pixmap, then free the X image and its buffer. */
5887 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5888 x_destroy_x_image (ximg
);
5890 /* Same for the mask. */
5893 /* Fill in the background_transparent field while we have the
5894 mask handy. Casting avoids a GCC warning. */
5895 image_background_transparent (img
, f
, (XImagePtr_or_DC
)mask_img
);
5897 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5898 x_destroy_x_image (mask_img
);
5904 #else /* HAVE_PNG */
5908 png_load (struct frame
*f
, struct image
*img
)
5910 return ns_load_image(f
, img
,
5911 image_spec_value (img
->spec
, QCfile
, NULL
),
5912 image_spec_value (img
->spec
, QCdata
, NULL
));
5914 #endif /* HAVE_NS */
5917 #endif /* !HAVE_PNG */
5921 /***********************************************************************
5923 ***********************************************************************/
5925 #if defined (HAVE_JPEG) || defined (HAVE_NS)
5927 static int jpeg_image_p (Lisp_Object object
);
5928 static int jpeg_load (struct frame
*f
, struct image
*img
);
5930 /* The symbol `jpeg' identifying images of this type. */
5932 static Lisp_Object Qjpeg
;
5934 /* Indices of image specification fields in gs_format, below. */
5936 enum jpeg_keyword_index
5945 JPEG_HEURISTIC_MASK
,
5951 /* Vector of image_keyword structures describing the format
5952 of valid user-defined image specifications. */
5954 static const struct image_keyword jpeg_format
[JPEG_LAST
] =
5956 {":type", IMAGE_SYMBOL_VALUE
, 1},
5957 {":data", IMAGE_STRING_VALUE
, 0},
5958 {":file", IMAGE_STRING_VALUE
, 0},
5959 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5960 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5961 {":relief", IMAGE_INTEGER_VALUE
, 0},
5962 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5963 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5964 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5965 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5968 /* Structure describing the image type `jpeg'. */
5970 static struct image_type jpeg_type
=
5979 /* Return non-zero if OBJECT is a valid JPEG image specification. */
5982 jpeg_image_p (Lisp_Object object
)
5984 struct image_keyword fmt
[JPEG_LAST
];
5986 memcpy (fmt
, jpeg_format
, sizeof fmt
);
5988 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
5991 /* Must specify either the :data or :file keyword. */
5992 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
5995 #endif /* HAVE_JPEG || HAVE_NS */
5999 /* Work around a warning about HAVE_STDLIB_H being redefined in
6001 #ifdef HAVE_STDLIB_H
6002 #undef HAVE_STDLIB_H
6003 #endif /* HAVE_STLIB_H */
6005 #if defined (HAVE_NTGUI) && !defined (__WIN32__)
6006 /* In older releases of the jpeg library, jpeglib.h will define boolean
6007 differently depending on __WIN32__, so make sure it is defined. */
6011 #include <jpeglib.h>
6014 #ifdef HAVE_STLIB_H_1
6015 #define HAVE_STDLIB_H 1
6020 /* JPEG library details. */
6021 DEF_IMGLIB_FN (void, jpeg_CreateDecompress
, (j_decompress_ptr
, int, size_t));
6022 DEF_IMGLIB_FN (boolean
, jpeg_start_decompress
, (j_decompress_ptr
));
6023 DEF_IMGLIB_FN (boolean
, jpeg_finish_decompress
, (j_decompress_ptr
));
6024 DEF_IMGLIB_FN (void, jpeg_destroy_decompress
, (j_decompress_ptr
));
6025 DEF_IMGLIB_FN (int, jpeg_read_header
, (j_decompress_ptr
, boolean
));
6026 DEF_IMGLIB_FN (JDIMENSION
, jpeg_read_scanlines
, (j_decompress_ptr
, JSAMPARRAY
, JDIMENSION
));
6027 DEF_IMGLIB_FN (struct jpeg_error_mgr
*, jpeg_std_error
, (struct jpeg_error_mgr
*));
6028 DEF_IMGLIB_FN (boolean
, jpeg_resync_to_restart
, (j_decompress_ptr
, int));
6031 init_jpeg_functions (Lisp_Object libraries
)
6035 if (!(library
= w32_delayed_load (libraries
, Qjpeg
)))
6038 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
6039 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
6040 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
6041 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
6042 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
6043 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
6044 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
6045 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
6049 /* Wrapper since we can't directly assign the function pointer
6050 to another function pointer that was declared more completely easily. */
6052 jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo
, int desired
)
6054 return fn_jpeg_resync_to_restart (cinfo
, desired
);
6059 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
6060 #define fn_jpeg_start_decompress jpeg_start_decompress
6061 #define fn_jpeg_finish_decompress jpeg_finish_decompress
6062 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
6063 #define fn_jpeg_read_header jpeg_read_header
6064 #define fn_jpeg_read_scanlines jpeg_read_scanlines
6065 #define fn_jpeg_std_error jpeg_std_error
6066 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
6068 #endif /* HAVE_NTGUI */
6070 struct my_jpeg_error_mgr
6072 struct jpeg_error_mgr pub
;
6073 jmp_buf setjmp_buffer
;
6077 static void my_error_exit (j_common_ptr
) NO_RETURN
;
6079 my_error_exit (j_common_ptr cinfo
)
6081 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
6082 longjmp (mgr
->setjmp_buffer
, 1);
6086 /* Init source method for JPEG data source manager. Called by
6087 jpeg_read_header() before any data is actually read. See
6088 libjpeg.doc from the JPEG lib distribution. */
6091 our_common_init_source (j_decompress_ptr cinfo
)
6096 /* Method to terminate data source. Called by
6097 jpeg_finish_decompress() after all data has been processed. */
6100 our_common_term_source (j_decompress_ptr cinfo
)
6105 /* Fill input buffer method for JPEG data source manager. Called
6106 whenever more data is needed. We read the whole image in one step,
6107 so this only adds a fake end of input marker at the end. */
6109 static JOCTET our_memory_buffer
[2];
6112 our_memory_fill_input_buffer (j_decompress_ptr cinfo
)
6114 /* Insert a fake EOI marker. */
6115 struct jpeg_source_mgr
*src
= cinfo
->src
;
6117 our_memory_buffer
[0] = (JOCTET
) 0xFF;
6118 our_memory_buffer
[1] = (JOCTET
) JPEG_EOI
;
6120 src
->next_input_byte
= our_memory_buffer
;
6121 src
->bytes_in_buffer
= 2;
6126 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6127 is the JPEG data source manager. */
6130 our_memory_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6132 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6136 if (num_bytes
> src
->bytes_in_buffer
)
6137 ERREXIT (cinfo
, JERR_INPUT_EOF
);
6139 src
->bytes_in_buffer
-= num_bytes
;
6140 src
->next_input_byte
+= num_bytes
;
6145 /* Set up the JPEG lib for reading an image from DATA which contains
6146 LEN bytes. CINFO is the decompression info structure created for
6147 reading the image. */
6150 jpeg_memory_src (j_decompress_ptr cinfo
, JOCTET
*data
, unsigned int len
)
6152 struct jpeg_source_mgr
*src
;
6154 if (cinfo
->src
== NULL
)
6156 /* First time for this JPEG object? */
6157 cinfo
->src
= (struct jpeg_source_mgr
*)
6158 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6159 sizeof (struct jpeg_source_mgr
));
6160 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6161 src
->next_input_byte
= data
;
6164 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
6165 src
->init_source
= our_common_init_source
;
6166 src
->fill_input_buffer
= our_memory_fill_input_buffer
;
6167 src
->skip_input_data
= our_memory_skip_input_data
;
6168 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6169 src
->term_source
= our_common_term_source
;
6170 src
->bytes_in_buffer
= len
;
6171 src
->next_input_byte
= data
;
6175 struct jpeg_stdio_mgr
6177 struct jpeg_source_mgr mgr
;
6184 /* Size of buffer to read JPEG from file.
6185 Not too big, as we want to use alloc_small. */
6186 #define JPEG_STDIO_BUFFER_SIZE 8192
6189 /* Fill input buffer method for JPEG data source manager. Called
6190 whenever more data is needed. The data is read from a FILE *. */
6193 our_stdio_fill_input_buffer (j_decompress_ptr cinfo
)
6195 struct jpeg_stdio_mgr
*src
;
6197 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6202 bytes
= fread (src
->buffer
, 1, JPEG_STDIO_BUFFER_SIZE
, src
->file
);
6204 src
->mgr
.bytes_in_buffer
= bytes
;
6207 WARNMS (cinfo
, JWRN_JPEG_EOF
);
6209 src
->buffer
[0] = (JOCTET
) 0xFF;
6210 src
->buffer
[1] = (JOCTET
) JPEG_EOI
;
6211 src
->mgr
.bytes_in_buffer
= 2;
6213 src
->mgr
.next_input_byte
= src
->buffer
;
6220 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
6221 is the JPEG data source manager. */
6224 our_stdio_skip_input_data (j_decompress_ptr cinfo
, long int num_bytes
)
6226 struct jpeg_stdio_mgr
*src
;
6227 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6229 while (num_bytes
> 0 && !src
->finished
)
6231 if (num_bytes
<= src
->mgr
.bytes_in_buffer
)
6233 src
->mgr
.bytes_in_buffer
-= num_bytes
;
6234 src
->mgr
.next_input_byte
+= num_bytes
;
6239 num_bytes
-= src
->mgr
.bytes_in_buffer
;
6240 src
->mgr
.bytes_in_buffer
= 0;
6241 src
->mgr
.next_input_byte
= NULL
;
6243 our_stdio_fill_input_buffer (cinfo
);
6249 /* Set up the JPEG lib for reading an image from a FILE *.
6250 CINFO is the decompression info structure created for
6251 reading the image. */
6254 jpeg_file_src (j_decompress_ptr cinfo
, FILE *fp
)
6256 struct jpeg_stdio_mgr
*src
;
6258 if (cinfo
->src
!= NULL
)
6259 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6262 /* First time for this JPEG object? */
6263 cinfo
->src
= (struct jpeg_source_mgr
*)
6264 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6265 sizeof (struct jpeg_stdio_mgr
));
6266 src
= (struct jpeg_stdio_mgr
*) cinfo
->src
;
6267 src
->buffer
= (JOCTET
*)
6268 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
6269 JPEG_STDIO_BUFFER_SIZE
);
6274 src
->mgr
.init_source
= our_common_init_source
;
6275 src
->mgr
.fill_input_buffer
= our_stdio_fill_input_buffer
;
6276 src
->mgr
.skip_input_data
= our_stdio_skip_input_data
;
6277 src
->mgr
.resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
6278 src
->mgr
.term_source
= our_common_term_source
;
6279 src
->mgr
.bytes_in_buffer
= 0;
6280 src
->mgr
.next_input_byte
= NULL
;
6284 /* Load image IMG for use on frame F. Patterned after example.c
6285 from the JPEG lib. */
6288 jpeg_load (struct frame
*f
, struct image
*img
)
6290 struct jpeg_decompress_struct cinfo
;
6291 struct my_jpeg_error_mgr mgr
;
6292 Lisp_Object file
, specified_file
;
6293 Lisp_Object specified_data
;
6294 FILE * volatile fp
= NULL
;
6296 int row_stride
, x
, y
;
6297 XImagePtr ximg
= NULL
;
6299 unsigned long *colors
;
6302 /* Open the JPEG file. */
6303 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6304 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6306 if (NILP (specified_data
))
6308 file
= x_find_image_file (specified_file
);
6309 if (!STRINGP (file
))
6311 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6315 fp
= fopen (SSDATA (file
), "rb");
6318 image_error ("Cannot open `%s'", file
, Qnil
);
6322 else if (!STRINGP (specified_data
))
6324 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6328 /* Customize libjpeg's error handling to call my_error_exit when an
6329 error is detected. This function will perform a longjmp. */
6330 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
6331 mgr
.pub
.error_exit
= my_error_exit
;
6333 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
6337 /* Called from my_error_exit. Display a JPEG error. */
6338 char buf
[JMSG_LENGTH_MAX
];
6339 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buf
);
6340 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
6341 build_string (buf
));
6344 /* Close the input file and destroy the JPEG object. */
6346 fclose ((FILE *) fp
);
6347 fn_jpeg_destroy_decompress (&cinfo
);
6349 /* If we already have an XImage, free that. */
6350 x_destroy_x_image (ximg
);
6352 /* Free pixmap and colors. */
6353 x_clear_image (f
, img
);
6357 /* Create the JPEG decompression object. Let it read from fp.
6358 Read the JPEG image header. */
6359 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
6361 if (NILP (specified_data
))
6362 jpeg_file_src (&cinfo
, (FILE *) fp
);
6364 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
6365 SBYTES (specified_data
));
6367 fn_jpeg_read_header (&cinfo
, 1);
6369 /* Customize decompression so that color quantization will be used.
6370 Start decompression. */
6371 cinfo
.quantize_colors
= 1;
6372 fn_jpeg_start_decompress (&cinfo
);
6373 width
= img
->width
= cinfo
.output_width
;
6374 height
= img
->height
= cinfo
.output_height
;
6376 if (!check_image_size (f
, width
, height
))
6378 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6379 longjmp (mgr
.setjmp_buffer
, 2);
6382 /* Create X image and pixmap. */
6383 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6384 longjmp (mgr
.setjmp_buffer
, 2);
6386 /* Allocate colors. When color quantization is used,
6387 cinfo.actual_number_of_colors has been set with the number of
6388 colors generated, and cinfo.colormap is a two-dimensional array
6389 of color indices in the range 0..cinfo.actual_number_of_colors.
6390 No more than 255 colors will be generated. */
6394 if (cinfo
.out_color_components
> 2)
6395 ir
= 0, ig
= 1, ib
= 2;
6396 else if (cinfo
.out_color_components
> 1)
6397 ir
= 0, ig
= 1, ib
= 0;
6399 ir
= 0, ig
= 0, ib
= 0;
6401 /* Use the color table mechanism because it handles colors that
6402 cannot be allocated nicely. Such colors will be replaced with
6403 a default color, and we don't have to care about which colors
6404 can be freed safely, and which can't. */
6405 init_color_table ();
6406 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6409 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6411 /* Multiply RGB values with 255 because X expects RGB values
6412 in the range 0..0xffff. */
6413 int r
= cinfo
.colormap
[ir
][i
] << 8;
6414 int g
= cinfo
.colormap
[ig
][i
] << 8;
6415 int b
= cinfo
.colormap
[ib
][i
] << 8;
6416 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6419 #ifdef COLOR_TABLE_SUPPORT
6420 /* Remember those colors actually allocated. */
6421 img
->colors
= colors_in_color_table (&img
->ncolors
);
6422 free_color_table ();
6423 #endif /* COLOR_TABLE_SUPPORT */
6427 row_stride
= width
* cinfo
.output_components
;
6428 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6430 for (y
= 0; y
< height
; ++y
)
6432 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6433 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6434 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6438 fn_jpeg_finish_decompress (&cinfo
);
6439 fn_jpeg_destroy_decompress (&cinfo
);
6441 fclose ((FILE *) fp
);
6443 /* Maybe fill in the background field while we have ximg handy. */
6444 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6445 /* Casting avoids a GCC warning. */
6446 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6448 /* Put the image into the pixmap. */
6449 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6450 x_destroy_x_image (ximg
);
6454 #else /* HAVE_JPEG */
6458 jpeg_load (struct frame
*f
, struct image
*img
)
6460 return ns_load_image (f
, img
,
6461 image_spec_value (img
->spec
, QCfile
, NULL
),
6462 image_spec_value (img
->spec
, QCdata
, NULL
));
6464 #endif /* HAVE_NS */
6466 #endif /* !HAVE_JPEG */
6470 /***********************************************************************
6472 ***********************************************************************/
6474 #if defined (HAVE_TIFF) || defined (HAVE_NS)
6476 static int tiff_image_p (Lisp_Object object
);
6477 static int tiff_load (struct frame
*f
, struct image
*img
);
6479 /* The symbol `tiff' identifying images of this type. */
6481 static Lisp_Object Qtiff
;
6483 /* Indices of image specification fields in tiff_format, below. */
6485 enum tiff_keyword_index
6494 TIFF_HEURISTIC_MASK
,
6501 /* Vector of image_keyword structures describing the format
6502 of valid user-defined image specifications. */
6504 static const struct image_keyword tiff_format
[TIFF_LAST
] =
6506 {":type", IMAGE_SYMBOL_VALUE
, 1},
6507 {":data", IMAGE_STRING_VALUE
, 0},
6508 {":file", IMAGE_STRING_VALUE
, 0},
6509 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6510 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6511 {":relief", IMAGE_INTEGER_VALUE
, 0},
6512 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6513 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6514 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6515 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
6516 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0}
6519 /* Structure describing the image type `tiff'. */
6521 static struct image_type tiff_type
=
6530 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6533 tiff_image_p (Lisp_Object object
)
6535 struct image_keyword fmt
[TIFF_LAST
];
6536 memcpy (fmt
, tiff_format
, sizeof fmt
);
6538 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6541 /* Must specify either the :data or :file keyword. */
6542 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6545 #endif /* HAVE_TIFF || HAVE_NS */
6553 /* TIFF library details. */
6554 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetErrorHandler
, (TIFFErrorHandler
));
6555 DEF_IMGLIB_FN (TIFFErrorHandler
, TIFFSetWarningHandler
, (TIFFErrorHandler
));
6556 DEF_IMGLIB_FN (TIFF
*, TIFFOpen
, (const char *, const char *));
6557 DEF_IMGLIB_FN (TIFF
*, TIFFClientOpen
, (const char *, const char *, thandle_t
,
6558 TIFFReadWriteProc
, TIFFReadWriteProc
,
6559 TIFFSeekProc
, TIFFCloseProc
, TIFFSizeProc
,
6560 TIFFMapFileProc
, TIFFUnmapFileProc
));
6561 DEF_IMGLIB_FN (int, TIFFGetField
, (TIFF
*, ttag_t
, ...));
6562 DEF_IMGLIB_FN (int, TIFFReadRGBAImage
, (TIFF
*, uint32
, uint32
, uint32
*, int));
6563 DEF_IMGLIB_FN (void, TIFFClose
, (TIFF
*));
6564 DEF_IMGLIB_FN (int, TIFFSetDirectory
, (TIFF
*, tdir_t
));
6567 init_tiff_functions (Lisp_Object libraries
)
6571 if (!(library
= w32_delayed_load (libraries
, Qtiff
)))
6574 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6575 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6576 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6577 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6578 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6579 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6580 LOAD_IMGLIB_FN (library
, TIFFClose
);
6581 LOAD_IMGLIB_FN (library
, TIFFSetDirectory
);
6587 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6588 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6589 #define fn_TIFFOpen TIFFOpen
6590 #define fn_TIFFClientOpen TIFFClientOpen
6591 #define fn_TIFFGetField TIFFGetField
6592 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6593 #define fn_TIFFClose TIFFClose
6594 #define fn_TIFFSetDirectory TIFFSetDirectory
6595 #endif /* HAVE_NTGUI */
6598 /* Reading from a memory buffer for TIFF images Based on the PNG
6599 memory source, but we have to provide a lot of extra functions.
6602 We really only need to implement read and seek, but I am not
6603 convinced that the TIFF library is smart enough not to destroy
6604 itself if we only hand it the function pointers we need to
6609 unsigned char *bytes
;
6616 tiff_read_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6618 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6620 if (size
> src
->len
- src
->index
)
6622 memcpy (buf
, src
->bytes
+ src
->index
, size
);
6628 tiff_write_from_memory (thandle_t data
, tdata_t buf
, tsize_t size
)
6634 tiff_seek_in_memory (thandle_t data
, toff_t off
, int whence
)
6636 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6641 case SEEK_SET
: /* Go from beginning of source. */
6645 case SEEK_END
: /* Go from end of source. */
6646 idx
= src
->len
+ off
;
6649 case SEEK_CUR
: /* Go from current position. */
6650 idx
= src
->index
+ off
;
6653 default: /* Invalid `whence'. */
6657 if (idx
> src
->len
|| idx
< 0)
6665 tiff_close_memory (thandle_t data
)
6672 tiff_mmap_memory (thandle_t data
, tdata_t
*pbase
, toff_t
*psize
)
6674 /* It is already _IN_ memory. */
6679 tiff_unmap_memory (thandle_t data
, tdata_t base
, toff_t size
)
6681 /* We don't need to do this. */
6685 tiff_size_of_memory (thandle_t data
)
6687 return ((tiff_memory_source
*) data
)->len
;
6691 static void tiff_error_handler (const char *, const char *, va_list)
6692 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6694 tiff_error_handler (const char *title
, const char *format
, va_list ap
)
6699 len
= sprintf (buf
, "TIFF error: %s ", title
);
6700 vsprintf (buf
+ len
, format
, ap
);
6701 add_to_log (buf
, Qnil
, Qnil
);
6705 static void tiff_warning_handler (const char *, const char *, va_list)
6706 ATTRIBUTE_FORMAT_PRINTF (2, 0);
6708 tiff_warning_handler (const char *title
, const char *format
, va_list ap
)
6713 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6714 vsprintf (buf
+ len
, format
, ap
);
6715 add_to_log (buf
, Qnil
, Qnil
);
6719 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6723 tiff_load (struct frame
*f
, struct image
*img
)
6725 Lisp_Object file
, specified_file
;
6726 Lisp_Object specified_data
;
6728 int width
, height
, x
, y
, count
;
6732 tiff_memory_source memsrc
;
6735 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6736 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6738 fn_TIFFSetErrorHandler ((TIFFErrorHandler
) tiff_error_handler
);
6739 fn_TIFFSetWarningHandler ((TIFFErrorHandler
) tiff_warning_handler
);
6741 if (NILP (specified_data
))
6743 /* Read from a file */
6744 file
= x_find_image_file (specified_file
);
6745 if (!STRINGP (file
))
6747 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6751 /* Try to open the image file. */
6752 tiff
= fn_TIFFOpen (SSDATA (file
), "r");
6755 image_error ("Cannot open `%s'", file
, Qnil
);
6761 if (!STRINGP (specified_data
))
6763 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
6767 /* Memory source! */
6768 memsrc
.bytes
= SDATA (specified_data
);
6769 memsrc
.len
= SBYTES (specified_data
);
6772 tiff
= fn_TIFFClientOpen ("memory_source", "r", (thandle_t
)&memsrc
,
6773 (TIFFReadWriteProc
) tiff_read_from_memory
,
6774 (TIFFReadWriteProc
) tiff_write_from_memory
,
6775 tiff_seek_in_memory
,
6777 tiff_size_of_memory
,
6783 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6788 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6789 if (INTEGERP (image
))
6791 int ino
= XFASTINT (image
);
6792 if (!fn_TIFFSetDirectory (tiff
, ino
))
6794 image_error ("Invalid image number `%s' in image `%s'",
6796 fn_TIFFClose (tiff
);
6801 /* Get width and height of the image, and allocate a raster buffer
6802 of width x height 32-bit values. */
6803 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6804 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6806 if (!check_image_size (f
, width
, height
))
6808 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
6809 fn_TIFFClose (tiff
);
6813 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6815 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6817 /* Count the number of images in the file. */
6818 for (count
= 1; fn_TIFFSetDirectory (tiff
, count
); count
++)
6822 img
->data
.lisp_val
= Fcons (Qcount
,
6823 Fcons (make_number (count
),
6824 img
->data
.lisp_val
));
6826 fn_TIFFClose (tiff
);
6829 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6834 /* Create the X image and pixmap. */
6835 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6841 /* Initialize the color table. */
6842 init_color_table ();
6844 /* Process the pixel raster. Origin is in the lower-left corner. */
6845 for (y
= 0; y
< height
; ++y
)
6847 uint32
*row
= buf
+ y
* width
;
6849 for (x
= 0; x
< width
; ++x
)
6851 uint32 abgr
= row
[x
];
6852 int r
= TIFFGetR (abgr
) << 8;
6853 int g
= TIFFGetG (abgr
) << 8;
6854 int b
= TIFFGetB (abgr
) << 8;
6855 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6859 #ifdef COLOR_TABLE_SUPPORT
6860 /* Remember the colors allocated for the image. Free the color table. */
6861 img
->colors
= colors_in_color_table (&img
->ncolors
);
6862 free_color_table ();
6863 #endif /* COLOR_TABLE_SUPPORT */
6866 img
->height
= height
;
6868 /* Maybe fill in the background field while we have ximg handy. */
6869 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6870 /* Casting avoids a GCC warning on W32. */
6871 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
6873 /* Put the image into the pixmap, then free the X image and its buffer. */
6874 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6875 x_destroy_x_image (ximg
);
6881 #else /* HAVE_TIFF */
6885 tiff_load (struct frame
*f
, struct image
*img
)
6887 return ns_load_image (f
, img
,
6888 image_spec_value (img
->spec
, QCfile
, NULL
),
6889 image_spec_value (img
->spec
, QCdata
, NULL
));
6891 #endif /* HAVE_NS */
6893 #endif /* !HAVE_TIFF */
6897 /***********************************************************************
6899 ***********************************************************************/
6901 #if defined (HAVE_GIF) || defined (HAVE_NS)
6903 static int gif_image_p (Lisp_Object object
);
6904 static int gif_load (struct frame
*f
, struct image
*img
);
6905 static void gif_clear_image (struct frame
*f
, struct image
*img
);
6907 /* The symbol `gif' identifying images of this type. */
6909 static Lisp_Object Qgif
;
6911 /* Indices of image specification fields in gif_format, below. */
6913 enum gif_keyword_index
6929 /* Vector of image_keyword structures describing the format
6930 of valid user-defined image specifications. */
6932 static const struct image_keyword gif_format
[GIF_LAST
] =
6934 {":type", IMAGE_SYMBOL_VALUE
, 1},
6935 {":data", IMAGE_STRING_VALUE
, 0},
6936 {":file", IMAGE_STRING_VALUE
, 0},
6937 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6938 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6939 {":relief", IMAGE_INTEGER_VALUE
, 0},
6940 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6941 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6942 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6943 {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6944 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6947 /* Structure describing the image type `gif'. */
6949 static struct image_type gif_type
=
6958 /* Free X resources of GIF image IMG which is used on frame F. */
6961 gif_clear_image (struct frame
*f
, struct image
*img
)
6963 /* IMG->data.ptr_val may contain metadata with extension data. */
6964 img
->data
.lisp_val
= Qnil
;
6965 x_clear_image (f
, img
);
6968 /* Return non-zero if OBJECT is a valid GIF image specification. */
6971 gif_image_p (Lisp_Object object
)
6973 struct image_keyword fmt
[GIF_LAST
];
6974 memcpy (fmt
, gif_format
, sizeof fmt
);
6976 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
6979 /* Must specify either the :data or :file keyword. */
6980 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
6983 #endif /* HAVE_GIF */
6987 #if defined (HAVE_NTGUI)
6988 /* winuser.h might define DrawText to DrawTextA or DrawTextW.
6989 Undefine before redefining to avoid a preprocessor warning. */
6993 /* avoid conflict with QuickdrawText.h */
6994 #define DrawText gif_DrawText
6995 #include <gif_lib.h>
6998 #else /* HAVE_NTGUI */
7000 #include <gif_lib.h>
7002 #endif /* HAVE_NTGUI */
7007 /* GIF library details. */
7008 DEF_IMGLIB_FN (int, DGifCloseFile
, (GifFileType
*));
7009 DEF_IMGLIB_FN (int, DGifSlurp
, (GifFileType
*));
7010 DEF_IMGLIB_FN (GifFileType
*, DGifOpen
, (void *, InputFunc
));
7011 DEF_IMGLIB_FN (GifFileType
*, DGifOpenFileName
, (const char *));
7014 init_gif_functions (Lisp_Object libraries
)
7018 if (!(library
= w32_delayed_load (libraries
, Qgif
)))
7021 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
7022 LOAD_IMGLIB_FN (library
, DGifSlurp
);
7023 LOAD_IMGLIB_FN (library
, DGifOpen
);
7024 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
7030 #define fn_DGifCloseFile DGifCloseFile
7031 #define fn_DGifSlurp DGifSlurp
7032 #define fn_DGifOpen DGifOpen
7033 #define fn_DGifOpenFileName DGifOpenFileName
7035 #endif /* HAVE_NTGUI */
7037 /* Reading a GIF image from memory
7038 Based on the PNG memory stuff to a certain extent. */
7042 unsigned char *bytes
;
7048 /* Make the current memory source available to gif_read_from_memory.
7049 It's done this way because not all versions of libungif support
7050 a UserData field in the GifFileType structure. */
7051 static gif_memory_source
*current_gif_memory_src
;
7054 gif_read_from_memory (GifFileType
*file
, GifByteType
*buf
, int len
)
7056 gif_memory_source
*src
= current_gif_memory_src
;
7058 if (len
> src
->len
- src
->index
)
7061 memcpy (buf
, src
->bytes
+ src
->index
, len
);
7067 /* Load GIF image IMG for use on frame F. Value is non-zero if
7070 static const int interlace_start
[] = {0, 4, 2, 1};
7071 static const int interlace_increment
[] = {8, 8, 4, 2};
7073 #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249
7076 gif_load (struct frame
*f
, struct image
*img
)
7078 Lisp_Object file
, specified_file
;
7079 Lisp_Object specified_data
;
7080 int rc
, width
, height
, x
, y
, i
;
7081 boolean transparent_p
= 0;
7083 ColorMapObject
*gif_color_map
;
7084 unsigned long pixel_colors
[256];
7087 int ino
, image_height
, image_width
;
7088 gif_memory_source memsrc
;
7089 unsigned char *raster
;
7090 unsigned int transparency_color_index
IF_LINT (= 0);
7092 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
7093 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7095 if (NILP (specified_data
))
7097 file
= x_find_image_file (specified_file
);
7098 if (!STRINGP (file
))
7100 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
7104 /* Open the GIF file. */
7105 gif
= fn_DGifOpenFileName (SSDATA (file
));
7108 image_error ("Cannot open `%s'", file
, Qnil
);
7114 if (!STRINGP (specified_data
))
7116 image_error ("Invalid image data `%s'", specified_data
, Qnil
);
7120 /* Read from memory! */
7121 current_gif_memory_src
= &memsrc
;
7122 memsrc
.bytes
= SDATA (specified_data
);
7123 memsrc
.len
= SBYTES (specified_data
);
7126 gif
= fn_DGifOpen (&memsrc
, gif_read_from_memory
);
7129 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
7134 /* Before reading entire contents, check the declared image size. */
7135 if (!check_image_size (f
, gif
->SWidth
, gif
->SHeight
))
7137 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7138 fn_DGifCloseFile (gif
);
7142 /* Read entire contents. */
7143 rc
= fn_DGifSlurp (gif
);
7144 if (rc
== GIF_ERROR
)
7146 image_error ("Error reading `%s'", img
->spec
, Qnil
);
7147 fn_DGifCloseFile (gif
);
7151 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7152 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7153 if (ino
>= gif
->ImageCount
)
7155 image_error ("Invalid image number `%s' in image `%s'",
7157 fn_DGifCloseFile (gif
);
7161 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++)
7162 if ((gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Function
7163 == GIF_LOCAL_DESCRIPTOR_EXTENSION
)
7164 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].ByteCount
== 4
7165 /* Transparency enabled? */
7166 && gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[0] & 1)
7169 transparency_color_index
7170 = (unsigned char) gif
->SavedImages
[ino
].ExtensionBlocks
[i
].Bytes
[3];
7173 img
->corners
[TOP_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Top
;
7174 img
->corners
[LEFT_CORNER
] = gif
->SavedImages
[ino
].ImageDesc
.Left
;
7175 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
7176 img
->corners
[BOT_CORNER
] = img
->corners
[TOP_CORNER
] + image_height
;
7177 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
7178 img
->corners
[RIGHT_CORNER
] = img
->corners
[LEFT_CORNER
] + image_width
;
7180 width
= img
->width
= max (gif
->SWidth
,
7181 max (gif
->Image
.Left
+ gif
->Image
.Width
,
7182 img
->corners
[RIGHT_CORNER
]));
7183 height
= img
->height
= max (gif
->SHeight
,
7184 max (gif
->Image
.Top
+ gif
->Image
.Height
,
7185 img
->corners
[BOT_CORNER
]));
7187 if (!check_image_size (f
, width
, height
))
7189 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7190 fn_DGifCloseFile (gif
);
7194 /* Create the X image and pixmap. */
7195 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7197 fn_DGifCloseFile (gif
);
7201 /* Allocate colors. */
7202 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
7204 gif_color_map
= gif
->SColorMap
;
7205 init_color_table ();
7206 memset (pixel_colors
, 0, sizeof pixel_colors
);
7209 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
7211 if (transparent_p
&& transparency_color_index
== i
)
7213 Lisp_Object specified_bg
7214 = image_spec_value (img
->spec
, QCbackground
, NULL
);
7215 pixel_colors
[i
] = STRINGP (specified_bg
)
7216 ? x_alloc_image_color (f
, img
, specified_bg
,
7217 FRAME_BACKGROUND_PIXEL (f
))
7218 : FRAME_BACKGROUND_PIXEL (f
);
7222 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
7223 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
7224 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
7225 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
7229 #ifdef COLOR_TABLE_SUPPORT
7230 img
->colors
= colors_in_color_table (&img
->ncolors
);
7231 free_color_table ();
7232 #endif /* COLOR_TABLE_SUPPORT */
7234 /* Clear the part of the screen image that are not covered by
7235 the image from the GIF file. Full animated GIF support
7236 requires more than can be done here (see the gif89 spec,
7237 disposal methods). Let's simply assume that the part
7238 not covered by a sub-image is in the frame's background color. */
7239 for (y
= 0; y
< img
->corners
[TOP_CORNER
]; ++y
)
7240 for (x
= 0; x
< width
; ++x
)
7241 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7243 for (y
= img
->corners
[BOT_CORNER
]; y
< height
; ++y
)
7244 for (x
= 0; x
< width
; ++x
)
7245 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7247 for (y
= img
->corners
[TOP_CORNER
]; y
< img
->corners
[BOT_CORNER
]; ++y
)
7249 for (x
= 0; x
< img
->corners
[LEFT_CORNER
]; ++x
)
7250 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7251 for (x
= img
->corners
[RIGHT_CORNER
]; x
< width
; ++x
)
7252 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
7255 /* Read the GIF image into the X image. We use a local variable
7256 `raster' here because RasterBits below is a char *, and invites
7257 problems with bytes >= 0x80. */
7258 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
7260 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
7263 int row
= interlace_start
[0];
7267 for (y
= 0; y
< image_height
; y
++)
7269 if (row
>= image_height
)
7271 row
= interlace_start
[++pass
];
7272 while (row
>= image_height
)
7273 row
= interlace_start
[++pass
];
7276 for (x
= 0; x
< image_width
; x
++)
7278 int c
= raster
[(y
* image_width
) + x
];
7279 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7280 row
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7283 row
+= interlace_increment
[pass
];
7288 for (y
= 0; y
< image_height
; ++y
)
7289 for (x
= 0; x
< image_width
; ++x
)
7291 int c
= raster
[y
* image_width
+ x
];
7292 XPutPixel (ximg
, x
+ img
->corners
[LEFT_CORNER
],
7293 y
+ img
->corners
[TOP_CORNER
], pixel_colors
[c
]);
7297 /* Save GIF image extension data for `image-metadata'.
7298 Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */
7299 img
->data
.lisp_val
= Qnil
;
7300 if (gif
->SavedImages
[ino
].ExtensionBlockCount
> 0)
7302 ExtensionBlock
*ext
= gif
->SavedImages
[ino
].ExtensionBlocks
;
7303 for (i
= 0; i
< gif
->SavedImages
[ino
].ExtensionBlockCount
; i
++, ext
++)
7304 /* Append (... FUNCTION "BYTES") */
7305 img
->data
.lisp_val
= Fcons (make_unibyte_string (ext
->Bytes
, ext
->ByteCount
),
7306 Fcons (make_number (ext
->Function
),
7307 img
->data
.lisp_val
));
7308 img
->data
.lisp_val
= Fcons (Qextension_data
,
7309 Fcons (Fnreverse (img
->data
.lisp_val
),
7312 if (gif
->ImageCount
> 1)
7313 img
->data
.lisp_val
= Fcons (Qcount
,
7314 Fcons (make_number (gif
->ImageCount
),
7315 img
->data
.lisp_val
));
7317 fn_DGifCloseFile (gif
);
7319 /* Maybe fill in the background field while we have ximg handy. */
7320 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7321 /* Casting avoids a GCC warning. */
7322 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
7324 /* Put the image into the pixmap, then free the X image and its buffer. */
7325 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7326 x_destroy_x_image (ximg
);
7331 #else /* !HAVE_GIF */
7335 gif_load (struct frame
*f
, struct image
*img
)
7337 return ns_load_image (f
, img
,
7338 image_spec_value (img
->spec
, QCfile
, NULL
),
7339 image_spec_value (img
->spec
, QCdata
, NULL
));
7341 #endif /* HAVE_NS */
7343 #endif /* HAVE_GIF */
7346 /***********************************************************************
7348 ***********************************************************************/
7349 #if defined (HAVE_IMAGEMAGICK)
7351 Lisp_Object Qimagemagick
;
7353 static int imagemagick_image_p (Lisp_Object
);
7354 static int imagemagick_load (struct frame
*, struct image
*);
7355 static void imagemagick_clear_image (struct frame
*, struct image
*);
7357 /* Indices of image specification fields in imagemagick_format. */
7359 enum imagemagick_keyword_index
7367 IMAGEMAGICK_ALGORITHM
,
7368 IMAGEMAGICK_HEURISTIC_MASK
,
7370 IMAGEMAGICK_BACKGROUND
,
7373 IMAGEMAGICK_ROTATION
,
7378 /* Vector of image_keyword structures describing the format
7379 of valid user-defined image specifications. */
7381 static struct image_keyword imagemagick_format
[IMAGEMAGICK_LAST
] =
7383 {":type", IMAGE_SYMBOL_VALUE
, 1},
7384 {":data", IMAGE_STRING_VALUE
, 0},
7385 {":file", IMAGE_STRING_VALUE
, 0},
7386 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7387 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7388 {":relief", IMAGE_INTEGER_VALUE
, 0},
7389 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7390 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7391 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7392 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
7393 {":height", IMAGE_INTEGER_VALUE
, 0},
7394 {":width", IMAGE_INTEGER_VALUE
, 0},
7395 {":rotation", IMAGE_NUMBER_VALUE
, 0},
7396 {":crop", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
7399 /* Structure describing the image type for any image handled via
7402 static struct image_type imagemagick_type
=
7405 imagemagick_image_p
,
7407 imagemagick_clear_image
,
7411 /* Free X resources of imagemagick image IMG which is used on frame F. */
7414 imagemagick_clear_image (struct frame
*f
,
7417 x_clear_image (f
, img
);
7420 /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do
7421 this by calling parse_image_spec and supplying the keywords that
7422 identify the IMAGEMAGICK format. */
7425 imagemagick_image_p (Lisp_Object object
)
7427 struct image_keyword fmt
[IMAGEMAGICK_LAST
];
7428 memcpy (fmt
, imagemagick_format
, sizeof fmt
);
7430 if (!parse_image_spec (object
, fmt
, IMAGEMAGICK_LAST
, Qimagemagick
))
7433 /* Must specify either the :data or :file keyword. */
7434 return fmt
[IMAGEMAGICK_FILE
].count
+ fmt
[IMAGEMAGICK_DATA
].count
== 1;
7437 /* The GIF library also defines DrawRectangle, but its never used in Emacs.
7438 Therefore rename the function so it doesnt collide with ImageMagick. */
7439 #define DrawRectangle DrawRectangleGif
7440 #include <wand/MagickWand.h>
7442 /* Helper function for imagemagick_load, which does the actual loading
7443 given contents and size, apart from frame and image structures,
7444 passed from imagemagick_load. Uses librimagemagick to do most of
7445 the image processing.
7447 F is a pointer to the Emacs frame; IMG to the image structure to
7448 prepare; CONTENTS is the string containing the IMAGEMAGICK data to
7449 be parsed; SIZE is the number of bytes of data; and FILENAME is
7450 either the file name or the image data.
7452 Return non-zero if successful. */
7455 imagemagick_load_image (struct frame
*f
, struct image
*img
,
7456 unsigned char *contents
, unsigned int size
,
7457 unsigned char *filename
)
7459 unsigned long width
;
7460 unsigned long height
;
7462 MagickBooleanType status
;
7465 Lisp_Object specified_bg
;
7470 MagickWand
*image_wand
;
7471 MagickWand
*ping_wand
;
7472 PixelIterator
*iterator
;
7474 MagickPixelPacket pixel
;
7477 Lisp_Object crop
, geometry
;
7479 int desired_width
, desired_height
;
7481 int imagemagick_rendermethod
;
7483 ImageInfo
*image_info
;
7484 ExceptionInfo
*exception
;
7488 /* Handle image index for image types who can contain more than one image.
7489 Interface :index is same as for GIF. First we "ping" the image to see how
7490 many sub-images it contains. Pinging is faster than loading the image to
7491 find out things about it. */
7493 /* Initialize the imagemagick environment. */
7494 MagickWandGenesis ();
7495 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
7496 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
7497 ping_wand
= NewMagickWand ();
7498 MagickSetResolution (ping_wand
, 2, 2);
7499 if (filename
!= NULL
)
7501 status
= MagickPingImage (ping_wand
, filename
);
7505 status
= MagickPingImageBlob (ping_wand
, contents
, size
);
7508 if (ino
>= MagickGetNumberImages (ping_wand
))
7510 image_error ("Invalid image number `%s' in image `%s'",
7512 DestroyMagickWand (ping_wand
);
7516 if (MagickGetNumberImages(ping_wand
) > 1)
7517 img
->data
.lisp_val
=
7519 Fcons (make_number (MagickGetNumberImages (ping_wand
)),
7520 img
->data
.lisp_val
));
7522 DestroyMagickWand (ping_wand
);
7524 /* Now we know how many images are inside the file. If it's not a
7525 bundle, the number is one. */
7527 if (filename
!= NULL
)
7529 image_info
= CloneImageInfo ((ImageInfo
*) NULL
);
7530 (void) strcpy (image_info
->filename
, filename
);
7531 image_info
->number_scenes
= 1;
7532 image_info
->scene
= ino
;
7533 exception
= AcquireExceptionInfo ();
7535 im_image
= ReadImage (image_info
, exception
);
7536 DestroyExceptionInfo (exception
);
7538 if (im_image
!= NULL
)
7540 image_wand
= NewMagickWandFromImage (im_image
);
7541 DestroyImage(im_image
);
7542 status
= MagickTrue
;
7545 status
= MagickFalse
;
7549 image_wand
= NewMagickWand ();
7550 status
= MagickReadImageBlob (image_wand
, contents
, size
);
7553 if (status
== MagickFalse
) goto imagemagick_error
;
7555 /* If width and/or height is set in the display spec assume we want
7556 to scale to those values. If either h or w is unspecified, the
7557 unspecified should be calculated from the specified to preserve
7560 value
= image_spec_value (img
->spec
, QCwidth
, NULL
);
7561 desired_width
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7562 value
= image_spec_value (img
->spec
, QCheight
, NULL
);
7563 desired_height
= (INTEGERP (value
) ? XFASTINT (value
) : -1);
7565 height
= MagickGetImageHeight (image_wand
);
7566 width
= MagickGetImageWidth (image_wand
);
7568 if (desired_width
!= -1 && desired_height
== -1)
7569 /* w known, calculate h. */
7570 desired_height
= (double) desired_width
/ width
* height
;
7571 if (desired_width
== -1 && desired_height
!= -1)
7572 /* h known, calculate w. */
7573 desired_width
= (double) desired_height
/ height
* width
;
7574 if (desired_width
!= -1 && desired_height
!= -1)
7576 status
= MagickScaleImage (image_wand
, desired_width
, desired_height
);
7577 if (status
== MagickFalse
)
7579 image_error ("Imagemagick scale failed", Qnil
, Qnil
);
7580 goto imagemagick_error
;
7584 /* crop behaves similar to image slicing in Emacs but is more memory
7586 crop
= image_spec_value (img
->spec
, QCcrop
, NULL
);
7588 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7590 /* After some testing, it seems MagickCropImage is the fastest crop
7591 function in ImageMagick. This crop function seems to do less copying
7592 than the alternatives, but it still reads the entire image into memory
7593 before croping, which is aparently difficult to avoid when using
7596 w
= XFASTINT (XCAR (crop
));
7598 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7600 h
= XFASTINT (XCAR (crop
));
7602 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7604 x
= XFASTINT (XCAR (crop
));
7606 if (CONSP (crop
) && INTEGERP (XCAR (crop
)))
7608 y
= XFASTINT (XCAR (crop
));
7609 MagickCropImage (image_wand
, w
, h
, x
, y
);
7615 /* Furthermore :rotation. we need background color and angle for
7618 TODO background handling for rotation specified_bg =
7619 image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP
7621 value
= image_spec_value (img
->spec
, QCrotation
, NULL
);
7624 PixelWand
* background
= NewPixelWand ();
7625 PixelSetColor (background
, "#ffffff");/*TODO remove hardcode*/
7627 rotation
= extract_float (value
);
7629 status
= MagickRotateImage (image_wand
, background
, rotation
);
7630 DestroyPixelWand (background
);
7631 if (status
== MagickFalse
)
7633 image_error ("Imagemagick image rotate failed", Qnil
, Qnil
);
7634 goto imagemagick_error
;
7638 /* Finally we are done manipulating the image. Figure out the
7639 resulting width/height and transfer ownerwship to Emacs. */
7640 height
= MagickGetImageHeight (image_wand
);
7641 width
= MagickGetImageWidth (image_wand
);
7643 if (! check_image_size (f
, width
, height
))
7645 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
7646 goto imagemagick_error
;
7649 /* We can now get a valid pixel buffer from the imagemagick file, if all
7652 init_color_table ();
7653 imagemagick_rendermethod
= (INTEGERP (Vimagemagick_render_type
)
7654 ? XFASTINT (Vimagemagick_render_type
) : 0);
7655 if (imagemagick_rendermethod
== 0)
7657 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7658 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
7659 &ximg
, &img
->pixmap
))
7661 #ifdef COLOR_TABLE_SUPPORT
7662 free_color_table ();
7664 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7665 goto imagemagick_error
;
7668 /* Copy imagegmagick image to x with primitive yet robust pixel
7669 pusher loop. This has been tested a lot with many different
7672 /* Copy pixels from the imagemagick image structure to the x image map. */
7673 iterator
= NewPixelIterator (image_wand
);
7674 if (iterator
== (PixelIterator
*) NULL
)
7676 #ifdef COLOR_TABLE_SUPPORT
7677 free_color_table ();
7679 x_destroy_x_image (ximg
);
7680 image_error ("Imagemagick pixel iterator creation failed",
7682 goto imagemagick_error
;
7685 for (y
= 0; y
< (long) MagickGetImageHeight (image_wand
); y
++)
7687 pixels
= PixelGetNextIteratorRow (iterator
, &width
);
7688 if (pixels
== (PixelWand
**) NULL
)
7690 for (x
= 0; x
< (long) width
; x
++)
7692 PixelGetMagickColor (pixels
[x
], &pixel
);
7693 XPutPixel (ximg
, x
, y
,
7694 lookup_rgb_color (f
,
7700 DestroyPixelIterator (iterator
);
7703 if (imagemagick_rendermethod
== 1)
7705 /* Magicexportimage is normaly faster than pixelpushing. This
7706 method is also well tested. Some aspects of this method are
7707 ad-hoc and needs to be more researched. */
7708 int imagedepth
= 24;/*MagickGetImageDepth(image_wand);*/
7709 char* exportdepth
= imagedepth
<= 8 ? "I" : "BGRP";/*"RGBP";*/
7710 /* Try to create a x pixmap to hold the imagemagick pixmap. */
7711 if (!x_create_x_image_and_pixmap (f
, width
, height
, imagedepth
,
7712 &ximg
, &img
->pixmap
))
7714 #ifdef COLOR_TABLE_SUPPORT
7715 free_color_table ();
7717 image_error("Imagemagick X bitmap allocation failure", Qnil
, Qnil
);
7718 goto imagemagick_error
;
7722 /* Oddly, the below code doesnt seem to work:*/
7723 /* switch(ximg->bitmap_unit){ */
7725 /* pixelwidth=CharPixel; */
7728 /* pixelwidth=ShortPixel; */
7731 /* pixelwidth=LongPixel; */
7735 Here im just guessing the format of the bitmap.
7736 happens to work fine for:
7739 seems about 3 times as fast as pixel pushing(not carefully measured)
7741 pixelwidth
= CharPixel
;/*??? TODO figure out*/
7742 #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS
7743 MagickExportImagePixels (image_wand
,
7748 /*&(img->pixmap));*/
7751 image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!",
7757 #ifdef COLOR_TABLE_SUPPORT
7758 /* Remember colors allocated for this image. */
7759 img
->colors
= colors_in_color_table (&img
->ncolors
);
7760 free_color_table ();
7761 #endif /* COLOR_TABLE_SUPPORT */
7765 img
->height
= height
;
7767 /* Put the image into the pixmap, then free the X image and its
7769 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7770 x_destroy_x_image (ximg
);
7773 /* Final cleanup. image_wand should be the only resource left. */
7774 DestroyMagickWand (image_wand
);
7775 /* `MagickWandTerminus' terminates the imagemagick environment. */
7776 MagickWandTerminus ();
7781 DestroyMagickWand (image_wand
);
7782 MagickWandTerminus ();
7783 /* TODO more cleanup. */
7784 image_error ("Error parsing IMAGEMAGICK image `%s'", img
->spec
, Qnil
);
7789 /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if
7790 successful. this function will go into the imagemagick_type structure, and
7791 the prototype thus needs to be compatible with that structure. */
7794 imagemagick_load (struct frame
*f
, struct image
*img
)
7797 Lisp_Object file_name
;
7799 /* If IMG->spec specifies a file name, create a non-file spec from it. */
7800 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
7801 if (STRINGP (file_name
))
7805 file
= x_find_image_file (file_name
);
7806 if (!STRINGP (file
))
7808 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
7811 success_p
= imagemagick_load_image (f
, img
, 0, 0, SDATA (file
));
7813 /* Else its not a file, its a lisp object. Load the image from a
7814 lisp object rather than a file. */
7819 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
7820 if (!STRINGP (data
))
7822 image_error ("Invalid image data `%s'", data
, Qnil
);
7825 success_p
= imagemagick_load_image (f
, img
, SDATA (data
),
7826 SBYTES (data
), NULL
);
7832 DEFUN ("imagemagick-types", Fimagemagick_types
, Simagemagick_types
, 0, 0, 0,
7833 doc
: /* Return a list of image types supported by ImageMagick.
7834 Each entry in this list is a symbol named after an ImageMagick format
7835 tag. See the ImageMagick manual for a list of ImageMagick formats and
7836 their descriptions (http://www.imagemagick.org/script/formats.php).
7838 Note that ImageMagick recognizes many file-types that Emacs does not
7839 recognize as images, such as C. See `imagemagick-types-inhibit'. */)
7842 Lisp_Object typelist
= Qnil
;
7843 unsigned long numf
= 0;
7845 char **imtypes
= GetMagickList ("*", &numf
, &ex
);
7847 Lisp_Object Qimagemagicktype
;
7848 for (i
= 0; i
< numf
; i
++)
7850 Qimagemagicktype
= intern (imtypes
[i
]);
7851 typelist
= Fcons (Qimagemagicktype
, typelist
);
7856 #endif /* defined (HAVE_IMAGEMAGICK) */
7860 /***********************************************************************
7862 ***********************************************************************/
7864 #if defined (HAVE_RSVG)
7866 /* Function prototypes. */
7868 static int svg_image_p (Lisp_Object object
);
7869 static int svg_load (struct frame
*f
, struct image
*img
);
7871 static int svg_load_image (struct frame
*, struct image
*,
7872 unsigned char *, unsigned int);
7874 /* The symbol `svg' identifying images of this type. */
7878 /* Indices of image specification fields in svg_format, below. */
7880 enum svg_keyword_index
7895 /* Vector of image_keyword structures describing the format
7896 of valid user-defined image specifications. */
7898 static const struct image_keyword svg_format
[SVG_LAST
] =
7900 {":type", IMAGE_SYMBOL_VALUE
, 1},
7901 {":data", IMAGE_STRING_VALUE
, 0},
7902 {":file", IMAGE_STRING_VALUE
, 0},
7903 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7904 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7905 {":relief", IMAGE_INTEGER_VALUE
, 0},
7906 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7907 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7908 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7909 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7912 /* Structure describing the image type `svg'. Its the same type of
7913 structure defined for all image formats, handled by emacs image
7914 functions. See struct image_type in dispextern.h. */
7916 static struct image_type svg_type
=
7918 /* An identifier showing that this is an image structure for the SVG format. */
7920 /* Handle to a function that can be used to identify a SVG file. */
7922 /* Handle to function used to load a SVG file. */
7924 /* Handle to function to free sresources for SVG. */
7926 /* An internal field to link to the next image type in a list of
7927 image types, will be filled in when registering the format. */
7932 /* Return non-zero if OBJECT is a valid SVG image specification. Do
7933 this by calling parse_image_spec and supplying the keywords that
7934 identify the SVG format. */
7937 svg_image_p (Lisp_Object object
)
7939 struct image_keyword fmt
[SVG_LAST
];
7940 memcpy (fmt
, svg_format
, sizeof fmt
);
7942 if (!parse_image_spec (object
, fmt
, SVG_LAST
, Qsvg
))
7945 /* Must specify either the :data or :file keyword. */
7946 return fmt
[SVG_FILE
].count
+ fmt
[SVG_DATA
].count
== 1;
7949 #include <librsvg/rsvg.h>
7953 /* SVG library functions. */
7954 DEF_IMGLIB_FN (RsvgHandle
*, rsvg_handle_new
);
7955 DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions
);
7956 DEF_IMGLIB_FN (gboolean
, rsvg_handle_write
);
7957 DEF_IMGLIB_FN (gboolean
, rsvg_handle_close
);
7958 DEF_IMGLIB_FN (GdkPixbuf
*, rsvg_handle_get_pixbuf
);
7959 DEF_IMGLIB_FN (void, rsvg_handle_free
);
7961 DEF_IMGLIB_FN (int, gdk_pixbuf_get_width
);
7962 DEF_IMGLIB_FN (int, gdk_pixbuf_get_height
);
7963 DEF_IMGLIB_FN (guchar
*, gdk_pixbuf_get_pixels
);
7964 DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride
);
7965 DEF_IMGLIB_FN (GdkColorspace
, gdk_pixbuf_get_colorspace
);
7966 DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels
);
7967 DEF_IMGLIB_FN (gboolean
, gdk_pixbuf_get_has_alpha
);
7968 DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample
);
7970 DEF_IMGLIB_FN (void, g_type_init
);
7971 DEF_IMGLIB_FN (void, g_object_unref
);
7972 DEF_IMGLIB_FN (void, g_error_free
);
7974 Lisp_Object Qgdk_pixbuf
, Qglib
, Qgobject
;
7977 init_svg_functions (Lisp_Object libraries
)
7979 HMODULE library
, gdklib
, glib
, gobject
;
7981 if (!(glib
= w32_delayed_load (libraries
, Qglib
))
7982 || !(gobject
= w32_delayed_load (libraries
, Qgobject
))
7983 || !(gdklib
= w32_delayed_load (libraries
, Qgdk_pixbuf
))
7984 || !(library
= w32_delayed_load (libraries
, Qsvg
)))
7987 LOAD_IMGLIB_FN (library
, rsvg_handle_new
);
7988 LOAD_IMGLIB_FN (library
, rsvg_handle_get_dimensions
);
7989 LOAD_IMGLIB_FN (library
, rsvg_handle_write
);
7990 LOAD_IMGLIB_FN (library
, rsvg_handle_close
);
7991 LOAD_IMGLIB_FN (library
, rsvg_handle_get_pixbuf
);
7992 LOAD_IMGLIB_FN (library
, rsvg_handle_free
);
7994 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_width
);
7995 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_height
);
7996 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_pixels
);
7997 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_rowstride
);
7998 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_colorspace
);
7999 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_n_channels
);
8000 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_has_alpha
);
8001 LOAD_IMGLIB_FN (gdklib
, gdk_pixbuf_get_bits_per_sample
);
8003 LOAD_IMGLIB_FN (gobject
, g_type_init
);
8004 LOAD_IMGLIB_FN (gobject
, g_object_unref
);
8005 LOAD_IMGLIB_FN (glib
, g_error_free
);
8011 /* The following aliases for library functions allow dynamic loading
8012 to be used on some platforms. */
8013 #define fn_rsvg_handle_new rsvg_handle_new
8014 #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions
8015 #define fn_rsvg_handle_write rsvg_handle_write
8016 #define fn_rsvg_handle_close rsvg_handle_close
8017 #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf
8018 #define fn_rsvg_handle_free rsvg_handle_free
8020 #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width
8021 #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height
8022 #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels
8023 #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride
8024 #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace
8025 #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels
8026 #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha
8027 #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample
8029 #define fn_g_type_init g_type_init
8030 #define fn_g_object_unref g_object_unref
8031 #define fn_g_error_free g_error_free
8032 #endif /* !HAVE_NTGUI */
8034 /* Load SVG image IMG for use on frame F. Value is non-zero if
8035 successful. this function will go into the svg_type structure, and
8036 the prototype thus needs to be compatible with that structure. */
8039 svg_load (struct frame
*f
, struct image
*img
)
8042 Lisp_Object file_name
;
8044 /* If IMG->spec specifies a file name, create a non-file spec from it. */
8045 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
8046 if (STRINGP (file_name
))
8049 unsigned char *contents
;
8052 file
= x_find_image_file (file_name
);
8053 if (!STRINGP (file
))
8055 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
8059 /* Read the entire file into memory. */
8060 contents
= slurp_file (SDATA (file
), &size
);
8061 if (contents
== NULL
)
8063 image_error ("Error loading SVG image `%s'", img
->spec
, Qnil
);
8066 /* If the file was slurped into memory properly, parse it. */
8067 success_p
= svg_load_image (f
, img
, contents
, size
);
8070 /* Else its not a file, its a lisp object. Load the image from a
8071 lisp object rather than a file. */
8076 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
8077 if (!STRINGP (data
))
8079 image_error ("Invalid image data `%s'", data
, Qnil
);
8082 success_p
= svg_load_image (f
, img
, SDATA (data
), SBYTES (data
));
8088 /* svg_load_image is a helper function for svg_load, which does the
8089 actual loading given contents and size, apart from frame and image
8090 structures, passed from svg_load.
8092 Uses librsvg to do most of the image processing.
8094 Returns non-zero when successful. */
8096 svg_load_image (struct frame
*f
, /* Pointer to emacs frame structure. */
8097 struct image
*img
, /* Pointer to emacs image structure. */
8098 unsigned char *contents
, /* String containing the SVG XML data to be parsed. */
8099 unsigned int size
) /* Size of data in bytes. */
8101 RsvgHandle
*rsvg_handle
;
8102 RsvgDimensionData dimension_data
;
8103 GError
*error
= NULL
;
8107 const guint8
*pixels
;
8110 Lisp_Object specified_bg
;
8115 /* g_type_init is a glib function that must be called prior to using
8116 gnome type library functions. */
8118 /* Make a handle to a new rsvg object. */
8119 rsvg_handle
= fn_rsvg_handle_new ();
8121 /* Parse the contents argument and fill in the rsvg_handle. */
8122 fn_rsvg_handle_write (rsvg_handle
, contents
, size
, &error
);
8123 if (error
) goto rsvg_error
;
8125 /* The parsing is complete, rsvg_handle is ready to used, close it
8126 for further writes. */
8127 fn_rsvg_handle_close (rsvg_handle
, &error
);
8128 if (error
) goto rsvg_error
;
8130 fn_rsvg_handle_get_dimensions (rsvg_handle
, &dimension_data
);
8131 if (! check_image_size (f
, dimension_data
.width
, dimension_data
.height
))
8133 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8137 /* We can now get a valid pixel buffer from the svg file, if all
8139 pixbuf
= fn_rsvg_handle_get_pixbuf (rsvg_handle
);
8140 if (!pixbuf
) goto rsvg_error
;
8141 fn_g_object_unref (rsvg_handle
);
8143 /* Extract some meta data from the svg handle. */
8144 width
= fn_gdk_pixbuf_get_width (pixbuf
);
8145 height
= fn_gdk_pixbuf_get_height (pixbuf
);
8146 pixels
= fn_gdk_pixbuf_get_pixels (pixbuf
);
8147 rowstride
= fn_gdk_pixbuf_get_rowstride (pixbuf
);
8149 /* Validate the svg meta data. */
8150 eassert (fn_gdk_pixbuf_get_colorspace (pixbuf
) == GDK_COLORSPACE_RGB
);
8151 eassert (fn_gdk_pixbuf_get_n_channels (pixbuf
) == 4);
8152 eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf
));
8153 eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf
) == 8);
8155 /* Try to create a x pixmap to hold the svg pixmap. */
8156 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
8158 fn_g_object_unref (pixbuf
);
8162 init_color_table ();
8164 /* Handle alpha channel by combining the image with a background
8166 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
8167 if (!STRINGP (specified_bg
)
8168 || !x_defined_color (f
, SDATA (specified_bg
), &background
, 0))
8171 background
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
8172 x_query_color (f
, &background
);
8174 ns_query_color (FRAME_BACKGROUND_COLOR (f
), &background
, 1);
8178 /* SVG pixmaps specify transparency in the last byte, so right
8179 shift 8 bits to get rid of it, since emacs doesn't support
8181 background
.red
>>= 8;
8182 background
.green
>>= 8;
8183 background
.blue
>>= 8;
8185 /* This loop handles opacity values, since Emacs assumes
8186 non-transparent images. Each pixel must be "flattened" by
8187 calculating the resulting color, given the transparency of the
8188 pixel, and the image background color. */
8189 for (y
= 0; y
< height
; ++y
)
8191 for (x
= 0; x
< width
; ++x
)
8201 opacity
= *pixels
++;
8203 red
= ((red
* opacity
)
8204 + (background
.red
* ((1 << 8) - opacity
)));
8205 green
= ((green
* opacity
)
8206 + (background
.green
* ((1 << 8) - opacity
)));
8207 blue
= ((blue
* opacity
)
8208 + (background
.blue
* ((1 << 8) - opacity
)));
8210 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, red
, green
, blue
));
8213 pixels
+= rowstride
- 4 * width
;
8216 #ifdef COLOR_TABLE_SUPPORT
8217 /* Remember colors allocated for this image. */
8218 img
->colors
= colors_in_color_table (&img
->ncolors
);
8219 free_color_table ();
8220 #endif /* COLOR_TABLE_SUPPORT */
8222 fn_g_object_unref (pixbuf
);
8225 img
->height
= height
;
8227 /* Maybe fill in the background field while we have ximg handy.
8228 Casting avoids a GCC warning. */
8229 IMAGE_BACKGROUND (img
, f
, (XImagePtr_or_DC
)ximg
);
8231 /* Put the image into the pixmap, then free the X image and its
8233 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
8234 x_destroy_x_image (ximg
);
8239 fn_g_object_unref (rsvg_handle
);
8240 /* FIXME: Use error->message so the user knows what is the actual
8241 problem with the image. */
8242 image_error ("Error parsing SVG image `%s'", img
->spec
, Qnil
);
8243 fn_g_error_free (error
);
8247 #endif /* defined (HAVE_RSVG) */
8252 /***********************************************************************
8254 ***********************************************************************/
8256 #ifdef HAVE_X_WINDOWS
8257 #define HAVE_GHOSTSCRIPT 1
8258 #endif /* HAVE_X_WINDOWS */
8260 #ifdef HAVE_GHOSTSCRIPT
8262 static int gs_image_p (Lisp_Object object
);
8263 static int gs_load (struct frame
*f
, struct image
*img
);
8264 static void gs_clear_image (struct frame
*f
, struct image
*img
);
8266 /* Keyword symbols. */
8268 static Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
8270 /* Indices of image specification fields in gs_format, below. */
8272 enum gs_keyword_index
8290 /* Vector of image_keyword structures describing the format
8291 of valid user-defined image specifications. */
8293 static const struct image_keyword gs_format
[GS_LAST
] =
8295 {":type", IMAGE_SYMBOL_VALUE
, 1},
8296 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8297 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
8298 {":file", IMAGE_STRING_VALUE
, 1},
8299 {":loader", IMAGE_FUNCTION_VALUE
, 0},
8300 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
8301 {":ascent", IMAGE_ASCENT_VALUE
, 0},
8302 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
8303 {":relief", IMAGE_INTEGER_VALUE
, 0},
8304 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8305 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8306 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
8307 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
8310 /* Structure describing the image type `ghostscript'. */
8312 static struct image_type gs_type
=
8322 /* Free X resources of Ghostscript image IMG which is used on frame F. */
8325 gs_clear_image (struct frame
*f
, struct image
*img
)
8327 /* IMG->data.ptr_val may contain a recorded colormap. */
8328 xfree (img
->data
.ptr_val
);
8329 x_clear_image (f
, img
);
8333 /* Return non-zero if OBJECT is a valid Ghostscript image
8337 gs_image_p (Lisp_Object object
)
8339 struct image_keyword fmt
[GS_LAST
];
8343 memcpy (fmt
, gs_format
, sizeof fmt
);
8345 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
8348 /* Bounding box must be a list or vector containing 4 integers. */
8349 tem
= fmt
[GS_BOUNDING_BOX
].value
;
8352 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
8353 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
8358 else if (VECTORP (tem
))
8360 if (ASIZE (tem
) != 4)
8362 for (i
= 0; i
< 4; ++i
)
8363 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
8373 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
8377 gs_load (struct frame
*f
, struct image
*img
)
8380 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
8382 double in_width
, in_height
;
8383 Lisp_Object pixel_colors
= Qnil
;
8385 /* Compute pixel size of pixmap needed from the given size in the
8386 image specification. Sizes in the specification are in pt. 1 pt
8387 = 1/72 in, xdpi and ydpi are stored in the frame's X display
8389 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
8390 in_width
= INTEGERP (pt_width
) ? XFASTINT (pt_width
) / 72.0 : 0;
8391 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
8392 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
8393 in_height
= INTEGERP (pt_height
) ? XFASTINT (pt_height
) / 72.0 : 0;
8394 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
8396 if (!check_image_size (f
, img
->width
, img
->height
))
8398 image_error ("Invalid image size (see `max-image-size')", Qnil
, Qnil
);
8402 /* Create the pixmap. */
8403 xassert (img
->pixmap
== NO_PIXMAP
);
8405 /* Only W32 version did BLOCK_INPUT here. ++kfs */
8407 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
8408 img
->width
, img
->height
,
8409 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
8414 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
8418 /* Call the loader to fill the pixmap. It returns a process object
8419 if successful. We do not record_unwind_protect here because
8420 other places in redisplay like calling window scroll functions
8421 don't either. Let the Lisp loader use `unwind-protect' instead. */
8422 sprintf (buffer
, "%lu %lu",
8423 (unsigned long) FRAME_X_WINDOW (f
),
8424 (unsigned long) img
->pixmap
);
8425 window_and_pixmap_id
= build_string (buffer
);
8427 sprintf (buffer
, "%lu %lu",
8428 FRAME_FOREGROUND_PIXEL (f
),
8429 FRAME_BACKGROUND_PIXEL (f
));
8430 pixel_colors
= build_string (buffer
);
8432 XSETFRAME (frame
, f
);
8433 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
8435 loader
= intern ("gs-load-image");
8437 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
8438 make_number (img
->width
),
8439 make_number (img
->height
),
8440 window_and_pixmap_id
,
8442 return PROCESSP (img
->data
.lisp_val
);
8446 /* Kill the Ghostscript process that was started to fill PIXMAP on
8447 frame F. Called from XTread_socket when receiving an event
8448 telling Emacs that Ghostscript has finished drawing. */
8451 x_kill_gs_process (Pixmap pixmap
, struct frame
*f
)
8453 struct image_cache
*c
= FRAME_IMAGE_CACHE (f
);
8457 /* Find the image containing PIXMAP. */
8458 for (i
= 0; i
< c
->used
; ++i
)
8459 if (c
->images
[i
]->pixmap
== pixmap
)
8462 /* Should someone in between have cleared the image cache, for
8463 instance, give up. */
8467 /* Kill the GS process. We should have found PIXMAP in the image
8468 cache and its image should contain a process object. */
8470 xassert (PROCESSP (img
->data
.lisp_val
));
8471 Fkill_process (img
->data
.lisp_val
, Qnil
);
8472 img
->data
.lisp_val
= Qnil
;
8474 #if defined (HAVE_X_WINDOWS)
8476 /* On displays with a mutable colormap, figure out the colors
8477 allocated for the image by looking at the pixels of an XImage for
8479 class = FRAME_X_VISUAL (f
)->class;
8480 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
8486 /* Try to get an XImage for img->pixmep. */
8487 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
8488 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
8493 /* Initialize the color table. */
8494 init_color_table ();
8496 /* For each pixel of the image, look its color up in the
8497 color table. After having done so, the color table will
8498 contain an entry for each color used by the image. */
8499 for (y
= 0; y
< img
->height
; ++y
)
8500 for (x
= 0; x
< img
->width
; ++x
)
8502 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
8503 lookup_pixel_color (f
, pixel
);
8506 /* Record colors in the image. Free color table and XImage. */
8507 #ifdef COLOR_TABLE_SUPPORT
8508 img
->colors
= colors_in_color_table (&img
->ncolors
);
8509 free_color_table ();
8511 XDestroyImage (ximg
);
8513 #if 0 /* This doesn't seem to be the case. If we free the colors
8514 here, we get a BadAccess later in x_clear_image when
8515 freeing the colors. */
8516 /* We have allocated colors once, but Ghostscript has also
8517 allocated colors on behalf of us. So, to get the
8518 reference counts right, free them once. */
8520 x_free_colors (f
, img
->colors
, img
->ncolors
);
8524 image_error ("Cannot get X image of `%s'; colors will not be freed",
8529 #endif /* HAVE_X_WINDOWS */
8531 /* Now that we have the pixmap, compute mask and transform the
8532 image if requested. */
8534 postprocess_image (f
, img
);
8538 #endif /* HAVE_GHOSTSCRIPT */
8541 /***********************************************************************
8543 ***********************************************************************/
8547 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
8548 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
8551 return valid_image_p (spec
) ? Qt
: Qnil
;
8555 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
8560 if (valid_image_p (spec
))
8561 id
= lookup_image (SELECTED_FRAME (), spec
);
8564 return make_number (id
);
8567 #endif /* GLYPH_DEBUG != 0 */
8570 /***********************************************************************
8572 ***********************************************************************/
8575 /* Image types that rely on external libraries are loaded dynamically
8576 if the library is available. */
8577 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8578 define_image_type (image_type, init_lib_fn (libraries))
8580 #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \
8581 define_image_type (image_type, 1)
8582 #endif /* HAVE_NTGUI */
8584 DEFUN ("init-image-library", Finit_image_library
, Sinit_image_library
, 2, 2, 0,
8585 doc
: /* Initialize image library implementing image type TYPE.
8586 Return non-nil if TYPE is a supported image type.
8588 Image types pbm and xbm are prebuilt; other types are loaded here.
8589 Libraries to load are specified in alist LIBRARIES (usually, the value
8590 of `dynamic-library-alist', which see). */)
8591 (Lisp_Object type
, Lisp_Object libraries
)
8594 /* Don't try to reload the library. */
8595 Lisp_Object tested
= Fassq (type
, Vlibrary_cache
);
8597 return XCDR (tested
);
8600 /* Types pbm and xbm are built-in and always available. */
8601 if (EQ (type
, Qpbm
) || EQ (type
, Qxbm
))
8604 #if defined (HAVE_XPM) || defined (HAVE_NS)
8605 if (EQ (type
, Qxpm
))
8606 return CHECK_LIB_AVAILABLE (&xpm_type
, init_xpm_functions
, libraries
);
8609 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8610 if (EQ (type
, Qjpeg
))
8611 return CHECK_LIB_AVAILABLE (&jpeg_type
, init_jpeg_functions
, libraries
);
8614 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8615 if (EQ (type
, Qtiff
))
8616 return CHECK_LIB_AVAILABLE (&tiff_type
, init_tiff_functions
, libraries
);
8619 #if defined (HAVE_GIF) || defined (HAVE_NS)
8620 if (EQ (type
, Qgif
))
8621 return CHECK_LIB_AVAILABLE (&gif_type
, init_gif_functions
, libraries
);
8624 #if defined (HAVE_PNG) || defined (HAVE_NS)
8625 if (EQ (type
, Qpng
))
8626 return CHECK_LIB_AVAILABLE (&png_type
, init_png_functions
, libraries
);
8629 #if defined (HAVE_RSVG)
8630 if (EQ (type
, Qsvg
))
8631 return CHECK_LIB_AVAILABLE (&svg_type
, init_svg_functions
, libraries
);
8634 #if defined (HAVE_IMAGEMAGICK)
8635 if (EQ (type
, Qimagemagick
))
8636 return CHECK_LIB_AVAILABLE (&imagemagick_type
, init_imagemagick_functions
,
8640 #ifdef HAVE_GHOSTSCRIPT
8641 if (EQ (type
, Qpostscript
))
8642 return CHECK_LIB_AVAILABLE (&gs_type
, init_gs_functions
, libraries
);
8645 /* If the type is not recognized, avoid testing it ever again. */
8646 CACHE_IMAGE_TYPE (type
, Qnil
);
8651 syms_of_image (void)
8653 /* Initialize this only once, since that's what we do with Vimage_types
8654 and they are supposed to be in sync. Initializing here gives correct
8655 operation on GNU/Linux of calling dump-emacs after loading some images. */
8658 /* Must be defined now becase we're going to update it below, while
8659 defining the supported image types. */
8660 DEFVAR_LISP ("image-types", Vimage_types
,
8661 doc
: /* List of potentially supported image types.
8662 Each element of the list is a symbol for an image type, like 'jpeg or 'png.
8663 To check whether it is really supported, use `image-type-available-p'. */);
8664 Vimage_types
= Qnil
;
8666 DEFVAR_LISP ("max-image-size", Vmax_image_size
,
8667 doc
: /* Maximum size of images.
8668 Emacs will not load an image into memory if its pixel width or
8669 pixel height exceeds this limit.
8671 If the value is an integer, it directly specifies the maximum
8672 image height and width, measured in pixels. If it is a floating
8673 point number, it specifies the maximum image height and width
8674 as a ratio to the frame height and width. If the value is
8675 non-numeric, there is no explicit limit on the size of images. */);
8676 Vmax_image_size
= make_float (MAX_IMAGE_SIZE
);
8678 Qpbm
= intern_c_string ("pbm");
8680 ADD_IMAGE_TYPE (Qpbm
);
8682 Qxbm
= intern_c_string ("xbm");
8684 ADD_IMAGE_TYPE (Qxbm
);
8686 define_image_type (&xbm_type
, 1);
8687 define_image_type (&pbm_type
, 1);
8689 Qcount
= intern_c_string ("count");
8690 staticpro (&Qcount
);
8691 Qextension_data
= intern_c_string ("extension-data");
8692 staticpro (&Qextension_data
);
8694 QCascent
= intern_c_string (":ascent");
8695 staticpro (&QCascent
);
8696 QCmargin
= intern_c_string (":margin");
8697 staticpro (&QCmargin
);
8698 QCrelief
= intern_c_string (":relief");
8699 staticpro (&QCrelief
);
8700 QCconversion
= intern_c_string (":conversion");
8701 staticpro (&QCconversion
);
8702 QCcolor_symbols
= intern_c_string (":color-symbols");
8703 staticpro (&QCcolor_symbols
);
8704 QCheuristic_mask
= intern_c_string (":heuristic-mask");
8705 staticpro (&QCheuristic_mask
);
8706 QCindex
= intern_c_string (":index");
8707 staticpro (&QCindex
);
8708 QCgeometry
= intern_c_string (":geometry");
8709 staticpro (&QCgeometry
);
8710 QCcrop
= intern_c_string (":crop");
8711 staticpro (&QCcrop
);
8712 QCrotation
= intern_c_string (":rotation");
8713 staticpro (&QCrotation
);
8714 QCmatrix
= intern_c_string (":matrix");
8715 staticpro (&QCmatrix
);
8716 QCcolor_adjustment
= intern_c_string (":color-adjustment");
8717 staticpro (&QCcolor_adjustment
);
8718 QCmask
= intern_c_string (":mask");
8719 staticpro (&QCmask
);
8721 Qlaplace
= intern_c_string ("laplace");
8722 staticpro (&Qlaplace
);
8723 Qemboss
= intern_c_string ("emboss");
8724 staticpro (&Qemboss
);
8725 Qedge_detection
= intern_c_string ("edge-detection");
8726 staticpro (&Qedge_detection
);
8727 Qheuristic
= intern_c_string ("heuristic");
8728 staticpro (&Qheuristic
);
8730 Qpostscript
= intern_c_string ("postscript");
8731 staticpro (&Qpostscript
);
8732 #ifdef HAVE_GHOSTSCRIPT
8733 ADD_IMAGE_TYPE (Qpostscript
);
8734 QCloader
= intern_c_string (":loader");
8735 staticpro (&QCloader
);
8736 QCbounding_box
= intern_c_string (":bounding-box");
8737 staticpro (&QCbounding_box
);
8738 QCpt_width
= intern_c_string (":pt-width");
8739 staticpro (&QCpt_width
);
8740 QCpt_height
= intern_c_string (":pt-height");
8741 staticpro (&QCpt_height
);
8742 #endif /* HAVE_GHOSTSCRIPT */
8745 Qlibpng_version
= intern_c_string ("libpng-version");
8746 staticpro (&Qlibpng_version
);
8747 Fset (Qlibpng_version
,
8749 make_number (PNG_LIBPNG_VER
)
8756 #if defined (HAVE_XPM) || defined (HAVE_NS)
8757 Qxpm
= intern_c_string ("xpm");
8759 ADD_IMAGE_TYPE (Qxpm
);
8762 #if defined (HAVE_JPEG) || defined (HAVE_NS)
8763 Qjpeg
= intern_c_string ("jpeg");
8765 ADD_IMAGE_TYPE (Qjpeg
);
8768 #if defined (HAVE_TIFF) || defined (HAVE_NS)
8769 Qtiff
= intern_c_string ("tiff");
8771 ADD_IMAGE_TYPE (Qtiff
);
8774 #if defined (HAVE_GIF) || defined (HAVE_NS)
8775 Qgif
= intern_c_string ("gif");
8777 ADD_IMAGE_TYPE (Qgif
);
8780 #if defined (HAVE_PNG) || defined (HAVE_NS)
8781 Qpng
= intern_c_string ("png");
8783 ADD_IMAGE_TYPE (Qpng
);
8786 #if defined (HAVE_IMAGEMAGICK)
8787 Qimagemagick
= intern_c_string ("imagemagick");
8788 staticpro (&Qimagemagick
);
8789 ADD_IMAGE_TYPE (Qimagemagick
);
8792 #if defined (HAVE_RSVG)
8793 Qsvg
= intern_c_string ("svg");
8795 ADD_IMAGE_TYPE (Qsvg
);
8797 /* Other libraries used directly by svg code. */
8798 Qgdk_pixbuf
= intern_c_string ("gdk-pixbuf");
8799 staticpro (&Qgdk_pixbuf
);
8800 Qglib
= intern_c_string ("glib");
8802 Qgobject
= intern_c_string ("gobject");
8803 staticpro (&Qgobject
);
8804 #endif /* HAVE_NTGUI */
8805 #endif /* HAVE_RSVG */
8807 defsubr (&Sinit_image_library
);
8808 #ifdef HAVE_IMAGEMAGICK
8809 defsubr (&Simagemagick_types
);
8811 defsubr (&Sclear_image_cache
);
8812 defsubr (&Simage_flush
);
8813 defsubr (&Simage_size
);
8814 defsubr (&Simage_mask_p
);
8815 defsubr (&Simage_metadata
);
8819 defsubr (&Slookup_image
);
8822 DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images
,
8823 doc
: /* Non-nil means always draw a cross over disabled images.
8824 Disabled images are those having a `:conversion disabled' property.
8825 A cross is always drawn on black & white displays. */);
8826 cross_disabled_images
= 0;
8828 DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path
,
8829 doc
: /* List of directories to search for window system bitmap files. */);
8830 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
8832 DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay
,
8833 doc
: /* Maximum time after which images are removed from the cache.
8834 When an image has not been displayed this many seconds, Emacs
8835 automatically removes it from the image cache. If the cache contains
8836 a large number of images, the actual eviction time may be shorter.
8837 The value can also be nil, meaning the cache is never cleared.
8839 The function `clear-image-cache' disregards this variable. */);
8840 Vimage_cache_eviction_delay
= make_number (300);
8841 #ifdef HAVE_IMAGEMAGICK
8842 DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type
,
8843 doc
: /* Choose between ImageMagick render methods. */);