1 /* Functions for image support on window system.
2 Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 98, 99, 2000,01,02,03,04
3 Free Software Foundation.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
31 /* This makes the fields of a Display accessible, in Xlib header files. */
33 #define XLIB_ILLEGAL_ACCESS
38 #include "dispextern.h"
39 #include "blockinput.h"
46 #include <sys/types.h>
49 #define COLOR_TABLE_SUPPORT 1
51 typedef struct x_bitmap_record Bitmap_Record
;
52 typedef XImage
* XImagePtr
;
53 typedef XImagePtr XImagePtr_or_DC
;
54 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
55 #define NO_PIXMAP None
56 #define PNG_BG_COLOR_SHIFT 0
58 #define RGB_PIXEL_COLOR unsigned long
60 #define PIX_MASK_RETAIN(f) 0
61 #define PIX_MASK_DRAW(f) 1
62 #endif /* HAVE_X_WINDOWS */
68 /* W32_TODO : Color tables on W32. */
69 #undef COLOR_TABLE_SUPPORT
71 typedef struct w32_bitmap_record Bitmap_Record
;
72 typedef XImage
*XImagePtr
;
73 typedef HDC XImagePtr_or_DC
;
74 #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y)
76 #define PNG_BG_COLOR_SHIFT 0
78 #define RGB_PIXEL_COLOR COLORREF
80 #define PIX_MASK_RETAIN(f) 0
81 #define PIX_MASK_DRAW(f) 1
83 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
84 #define x_defined_color w32_defined_color
85 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
86 #endif /* HAVE_NTGUI */
96 #include <QuickTime/QuickTime.h>
97 #else /* not MAC_OSX */
100 #include <TextUtils.h>
101 #endif /* not MAC_OSX */
103 /* MAC_TODO : Color tables on Mac. */
104 #undef COLOR_TABLE_SUPPORT
106 /* Mac equivalent of XImage. */
107 typedef Pixmap XImagePtr
;
108 #define ZPixmap 0 /* arbitrary */
109 typedef struct mac_bitmap_record Bitmap_Record
;
111 typedef XImagePtr XImagePtr_or_DC
;
112 #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y)
114 #define PNG_BG_COLOR_SHIFT 8
116 #define RGB_PIXEL_COLOR unsigned long
118 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
119 #define x_defined_color mac_defined_color
120 #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes)
121 #define XDrawLine(display, w, gc, x1, y1, x2, y2) \
122 mac_draw_line_to_pixmap(display, w, gc, x1, y1, x2, y2)
127 /* Search path for bitmap files. */
129 Lisp_Object Vx_bitmap_file_path
;
132 static void x_disable_image
P_ ((struct frame
*, struct image
*));
133 static void x_edge_detection
P_ ((struct frame
*, struct image
*, Lisp_Object
,
136 static void init_color_table
P_ ((void));
137 static unsigned long lookup_rgb_color
P_ ((struct frame
*f
, int r
, int g
, int b
));
138 #ifdef COLOR_TABLE_SUPPORT
139 static void free_color_table
P_ ((void));
140 static unsigned long *colors_in_color_table
P_ ((int *n
));
141 static unsigned long lookup_pixel_color
P_ ((struct frame
*f
, unsigned long p
));
144 /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
145 id, which is just an int that this section returns. Bitmaps are
146 reference counted so they can be shared among frames.
148 Bitmap indices are guaranteed to be > 0, so a negative number can
149 be used to indicate no bitmap.
151 If you use x_create_bitmap_from_data, then you must keep track of
152 the bitmaps yourself. That is, creating a bitmap from the same
153 data more than once will not be caught. */
158 XGetImage (display
, pixmap
, x
, y
, width
, height
, plane_mask
, format
)
159 Display
*display
; /* not used */
161 int x
, y
; /* not used */
162 unsigned int width
, height
; /* not used */
163 unsigned long plane_mask
; /* not used */
164 int format
; /* not used */
167 xassert (x
== 0 && y
== 0);
170 SetRect (&ri
, 0, 0, width
, height
);
171 xassert (EqualRect (&ri
, GetPixBounds (GetGWorldPixMap (pixmap
), &rp
)));
173 xassert (! (pixelsLocked
& GetPixelsState (GetGWorldPixMap (pixmap
))));
176 LockPixels (GetGWorldPixMap (pixmap
));
182 XPutPixel (ximage
, x
, y
, pixel
)
189 SetGWorld (ximage
, NULL
);
191 color
.red
= RED16_FROM_ULONG (pixel
);
192 color
.green
= GREEN16_FROM_ULONG (pixel
);
193 color
.blue
= BLUE16_FROM_ULONG (pixel
);
194 SetCPixel (x
, y
, &color
);
198 XGetPixel (ximage
, x
, y
)
204 SetGWorld (ximage
, NULL
);
206 GetCPixel (x
, y
, &color
);
207 return RGB_TO_ULONG (color
.red
>> 8, color
.green
>> 8, color
.blue
>> 8);
214 UnlockPixels (GetGWorldPixMap (ximg
));
219 /* Functions to access the contents of a bitmap, given an id. */
222 x_bitmap_height (f
, id
)
226 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].height
;
230 x_bitmap_width (f
, id
)
234 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].width
;
237 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
239 x_bitmap_pixmap (f
, id
)
243 return (int) FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].pixmap
;
247 #ifdef HAVE_X_WINDOWS
249 x_bitmap_mask (f
, id
)
253 return FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].mask
;
257 /* Allocate a new bitmap record. Returns index of new record. */
260 x_allocate_bitmap_record (f
)
263 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
266 if (dpyinfo
->bitmaps
== NULL
)
268 dpyinfo
->bitmaps_size
= 10;
270 = (Bitmap_Record
*) xmalloc (dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
271 dpyinfo
->bitmaps_last
= 1;
275 if (dpyinfo
->bitmaps_last
< dpyinfo
->bitmaps_size
)
276 return ++dpyinfo
->bitmaps_last
;
278 for (i
= 0; i
< dpyinfo
->bitmaps_size
; ++i
)
279 if (dpyinfo
->bitmaps
[i
].refcount
== 0)
282 dpyinfo
->bitmaps_size
*= 2;
284 = (Bitmap_Record
*) xrealloc (dpyinfo
->bitmaps
,
285 dpyinfo
->bitmaps_size
* sizeof (Bitmap_Record
));
286 return ++dpyinfo
->bitmaps_last
;
289 /* Add one reference to the reference count of the bitmap with id ID. */
292 x_reference_bitmap (f
, id
)
296 ++FRAME_X_DISPLAY_INFO (f
)->bitmaps
[id
- 1].refcount
;
299 /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */
302 x_create_bitmap_from_data (f
, bits
, width
, height
)
305 unsigned int width
, height
;
307 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
310 #ifdef HAVE_X_WINDOWS
312 bitmap
= XCreateBitmapFromData (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
313 bits
, width
, height
);
316 #endif /* HAVE_X_WINDOWS */
320 bitmap
= CreateBitmap (width
, height
,
321 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_planes
,
322 FRAME_X_DISPLAY_INFO (XFRAME (frame
))->n_cbits
,
326 #endif /* HAVE_NTGUI */
329 /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */
334 id
= x_allocate_bitmap_record (f
);
336 dpyinfo
->bitmaps
[id
- 1].bitmap_data
= (char *) xmalloc (height
* width
);
337 if (! dpyinfo
->bitmaps
[id
- 1].bitmap_data
)
339 bcopy (bits
, dpyinfo
->bitmaps
[id
- 1].bitmap_data
, height
* width
);
342 dpyinfo
->bitmaps
[id
- 1].file
= NULL
;
343 dpyinfo
->bitmaps
[id
- 1].height
= height
;
344 dpyinfo
->bitmaps
[id
- 1].width
= width
;
345 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
347 #ifdef HAVE_X_WINDOWS
348 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
349 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
350 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
351 #endif /* HAVE_X_WINDOWS */
354 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
355 dpyinfo
->bitmaps
[id
- 1].hinst
= NULL
;
356 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
357 #endif /* HAVE_NTGUI */
362 /* Create bitmap from file FILE for frame F. */
365 x_create_bitmap_from_file (f
, file
)
370 return -1; /* MAC_TODO : bitmap support */
374 return -1; /* W32_TODO : bitmap support */
375 #endif /* HAVE_NTGUI */
377 #ifdef HAVE_X_WINDOWS
378 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
379 unsigned int width
, height
;
381 int xhot
, yhot
, result
, id
;
386 /* Look for an existing bitmap with the same name. */
387 for (id
= 0; id
< dpyinfo
->bitmaps_last
; ++id
)
389 if (dpyinfo
->bitmaps
[id
].refcount
390 && dpyinfo
->bitmaps
[id
].file
391 && !strcmp (dpyinfo
->bitmaps
[id
].file
, (char *) SDATA (file
)))
393 ++dpyinfo
->bitmaps
[id
].refcount
;
398 /* Search bitmap-file-path for the file, if appropriate. */
399 fd
= openp (Vx_bitmap_file_path
, file
, Qnil
, &found
, Qnil
);
404 filename
= (char *) SDATA (found
);
406 result
= XReadBitmapFile (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
407 filename
, &width
, &height
, &bitmap
, &xhot
, &yhot
);
408 if (result
!= BitmapSuccess
)
411 id
= x_allocate_bitmap_record (f
);
412 dpyinfo
->bitmaps
[id
- 1].pixmap
= bitmap
;
413 dpyinfo
->bitmaps
[id
- 1].have_mask
= 0;
414 dpyinfo
->bitmaps
[id
- 1].refcount
= 1;
415 dpyinfo
->bitmaps
[id
- 1].file
= (char *) xmalloc (SBYTES (file
) + 1);
416 dpyinfo
->bitmaps
[id
- 1].depth
= 1;
417 dpyinfo
->bitmaps
[id
- 1].height
= height
;
418 dpyinfo
->bitmaps
[id
- 1].width
= width
;
419 strcpy (dpyinfo
->bitmaps
[id
- 1].file
, SDATA (file
));
422 #endif /* HAVE_X_WINDOWS */
428 Free_Bitmap_Record (dpyinfo
, bm
)
429 Display_Info
*dpyinfo
;
432 #ifdef HAVE_X_WINDOWS
433 XFreePixmap (dpyinfo
->display
, bm
->pixmap
);
435 XFreePixmap (dpyinfo
->display
, bm
->mask
);
436 #endif /* HAVE_X_WINDOWS */
439 DeleteObject (bm
->pixmap
);
440 #endif /* HAVE_NTGUI */
443 xfree (bm
->bitmap_data
); /* Added ++kfs */
444 bm
->bitmap_data
= NULL
;
454 /* Remove reference to bitmap with id number ID. */
457 x_destroy_bitmap (f
, id
)
461 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
465 Bitmap_Record
*bm
= &dpyinfo
->bitmaps
[id
- 1];
467 if (--bm
->refcount
== 0)
470 Free_Bitmap_Record (dpyinfo
, bm
);
476 /* Free all the bitmaps for the display specified by DPYINFO. */
479 x_destroy_all_bitmaps (dpyinfo
)
480 Display_Info
*dpyinfo
;
483 Bitmap_Record
*bm
= dpyinfo
->bitmaps
;
485 for (i
= 0; i
< dpyinfo
->bitmaps_last
; i
++, bm
++)
486 if (bm
->refcount
> 0)
487 Free_Bitmap_Record (dpyinfo
, bm
);
489 dpyinfo
->bitmaps_last
= 0;
493 #ifdef HAVE_X_WINDOWS
495 /* Useful functions defined in the section
496 `Image type independent image structures' below. */
498 static unsigned long four_corners_best
P_ ((XImagePtr ximg
, unsigned long width
,
499 unsigned long height
));
501 static int x_create_x_image_and_pixmap
P_ ((struct frame
*f
, int width
, int height
,
502 int depth
, XImagePtr
*ximg
,
505 static void x_destroy_x_image
P_ ((XImagePtr ximg
));
508 /* Create a mask of a bitmap. Note is this not a perfect mask.
509 It's nicer with some borders in this context */
512 x_create_bitmap_mask (f
, id
)
517 XImagePtr ximg
, mask_img
;
518 unsigned long width
, height
;
521 unsigned long x
, y
, xp
, xm
, yp
, ym
;
524 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
529 pixmap
= x_bitmap_pixmap (f
, id
);
530 width
= x_bitmap_width (f
, id
);
531 height
= x_bitmap_height (f
, id
);
534 ximg
= XGetImage (FRAME_X_DISPLAY (f
), pixmap
, 0, 0, width
, height
,
543 result
= x_create_x_image_and_pixmap (f
, width
, height
, 1, &mask_img
, &mask
);
548 XDestroyImage (ximg
);
552 bg
= four_corners_best (ximg
, width
, height
);
554 for (y
= 0; y
< ximg
->height
; ++y
)
556 for (x
= 0; x
< ximg
->width
; ++x
)
558 xp
= x
!= ximg
->width
- 1 ? x
+ 1 : 0;
559 xm
= x
!= 0 ? x
- 1 : ximg
->width
- 1;
560 yp
= y
!= ximg
->height
- 1 ? y
+ 1 : 0;
561 ym
= y
!= 0 ? y
- 1 : ximg
->height
- 1;
562 if (XGetPixel (ximg
, x
, y
) == bg
563 && XGetPixel (ximg
, x
, yp
) == bg
564 && XGetPixel (ximg
, x
, ym
) == bg
565 && XGetPixel (ximg
, xp
, y
) == bg
566 && XGetPixel (ximg
, xp
, yp
) == bg
567 && XGetPixel (ximg
, xp
, ym
) == bg
568 && XGetPixel (ximg
, xm
, y
) == bg
569 && XGetPixel (ximg
, xm
, yp
) == bg
570 && XGetPixel (ximg
, xm
, ym
) == bg
)
571 XPutPixel (mask_img
, x
, y
, 0);
573 XPutPixel (mask_img
, x
, y
, 1);
577 xassert (interrupt_input_blocked
);
578 gc
= XCreateGC (FRAME_X_DISPLAY (f
), mask
, 0, NULL
);
579 XPutImage (FRAME_X_DISPLAY (f
), mask
, gc
, mask_img
, 0, 0, 0, 0,
581 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
583 dpyinfo
->bitmaps
[id
- 1].have_mask
= 1;
584 dpyinfo
->bitmaps
[id
- 1].mask
= mask
;
586 XDestroyImage (ximg
);
587 x_destroy_x_image (mask_img
);
592 #endif /* HAVE_X_WINDOWS */
595 /***********************************************************************
597 ***********************************************************************/
599 /* Value is the number of elements of vector VECTOR. */
601 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
603 /* List of supported image types. Use define_image_type to add new
604 types. Use lookup_image_type to find a type for a given symbol. */
606 static struct image_type
*image_types
;
608 /* The symbol `xbm' which is used as the type symbol for XBM images. */
614 extern Lisp_Object QCwidth
, QCheight
, QCforeground
, QCbackground
, QCfile
;
615 extern Lisp_Object QCdata
, QCtype
;
616 Lisp_Object QCascent
, QCmargin
, QCrelief
;
617 Lisp_Object QCconversion
, QCcolor_symbols
, QCheuristic_mask
;
618 Lisp_Object QCindex
, QCmatrix
, QCcolor_adjustment
, QCmask
;
622 Lisp_Object Qlaplace
, Qemboss
, Qedge_detection
, Qheuristic
;
625 /* Time in seconds after which images should be removed from the cache
628 Lisp_Object Vimage_cache_eviction_delay
;
630 /* Function prototypes. */
632 static void define_image_type
P_ ((struct image_type
*type
));
633 static struct image_type
*lookup_image_type
P_ ((Lisp_Object symbol
));
634 static void image_error
P_ ((char *format
, Lisp_Object
, Lisp_Object
));
635 static void x_laplace
P_ ((struct frame
*, struct image
*));
636 static void x_emboss
P_ ((struct frame
*, struct image
*));
637 static int x_build_heuristic_mask
P_ ((struct frame
*, struct image
*,
641 /* Define a new image type from TYPE. This adds a copy of TYPE to
642 image_types and adds the symbol *TYPE->type to Vimage_types. */
645 define_image_type (type
)
646 struct image_type
*type
;
648 /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
649 The initialized data segment is read-only. */
650 struct image_type
*p
= (struct image_type
*) xmalloc (sizeof *p
);
651 bcopy (type
, p
, sizeof *p
);
652 p
->next
= image_types
;
654 Vimage_types
= Fcons (*p
->type
, Vimage_types
);
658 /* Look up image type SYMBOL, and return a pointer to its image_type
659 structure. Value is null if SYMBOL is not a known image type. */
661 static INLINE
struct image_type
*
662 lookup_image_type (symbol
)
665 struct image_type
*type
;
667 for (type
= image_types
; type
; type
= type
->next
)
668 if (EQ (symbol
, *type
->type
))
675 /* Value is non-zero if OBJECT is a valid Lisp image specification. A
676 valid image specification is a list whose car is the symbol
677 `image', and whose rest is a property list. The property list must
678 contain a value for key `:type'. That value must be the name of a
679 supported image type. The rest of the property list depends on the
683 valid_image_p (object
)
692 for (tem
= XCDR (object
); CONSP (tem
); tem
= XCDR (tem
))
693 if (EQ (XCAR (tem
), QCtype
))
696 if (CONSP (tem
) && SYMBOLP (XCAR (tem
)))
698 struct image_type
*type
;
699 type
= lookup_image_type (XCAR (tem
));
701 valid_p
= type
->valid_p (object
);
712 /* Log error message with format string FORMAT and argument ARG.
713 Signaling an error, e.g. when an image cannot be loaded, is not a
714 good idea because this would interrupt redisplay, and the error
715 message display would lead to another redisplay. This function
716 therefore simply displays a message. */
719 image_error (format
, arg1
, arg2
)
721 Lisp_Object arg1
, arg2
;
723 add_to_log (format
, arg1
, arg2
);
728 /***********************************************************************
730 ***********************************************************************/
732 enum image_value_type
734 IMAGE_DONT_CHECK_VALUE_TYPE
,
736 IMAGE_STRING_OR_NIL_VALUE
,
738 IMAGE_POSITIVE_INTEGER_VALUE
,
739 IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
,
740 IMAGE_NON_NEGATIVE_INTEGER_VALUE
,
743 IMAGE_FUNCTION_VALUE
,
748 /* Structure used when parsing image specifications. */
752 /* Name of keyword. */
755 /* The type of value allowed. */
756 enum image_value_type type
;
758 /* Non-zero means key must be present. */
761 /* Used to recognize duplicate keywords in a property list. */
764 /* The value that was found. */
769 static int parse_image_spec
P_ ((Lisp_Object
, struct image_keyword
*,
771 static Lisp_Object image_spec_value
P_ ((Lisp_Object
, Lisp_Object
, int *));
774 /* Parse image spec SPEC according to KEYWORDS. A valid image spec
775 has the format (image KEYWORD VALUE ...). One of the keyword/
776 value pairs must be `:type TYPE'. KEYWORDS is a vector of
777 image_keywords structures of size NKEYWORDS describing other
778 allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
781 parse_image_spec (spec
, keywords
, nkeywords
, type
)
783 struct image_keyword
*keywords
;
794 while (CONSP (plist
))
796 Lisp_Object key
, value
;
798 /* First element of a pair must be a symbol. */
800 plist
= XCDR (plist
);
804 /* There must follow a value. */
807 value
= XCAR (plist
);
808 plist
= XCDR (plist
);
810 /* Find key in KEYWORDS. Error if not found. */
811 for (i
= 0; i
< nkeywords
; ++i
)
812 if (strcmp (keywords
[i
].name
, SDATA (SYMBOL_NAME (key
))) == 0)
818 /* Record that we recognized the keyword. If a keywords
819 was found more than once, it's an error. */
820 keywords
[i
].value
= value
;
823 if (keywords
[i
].count
> 1)
826 /* Check type of value against allowed type. */
827 switch (keywords
[i
].type
)
829 case IMAGE_STRING_VALUE
:
830 if (!STRINGP (value
))
834 case IMAGE_STRING_OR_NIL_VALUE
:
835 if (!STRINGP (value
) && !NILP (value
))
839 case IMAGE_SYMBOL_VALUE
:
840 if (!SYMBOLP (value
))
844 case IMAGE_POSITIVE_INTEGER_VALUE
:
845 if (!INTEGERP (value
) || XINT (value
) <= 0)
849 case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
:
850 if (INTEGERP (value
) && XINT (value
) >= 0)
853 && INTEGERP (XCAR (value
)) && INTEGERP (XCDR (value
))
854 && XINT (XCAR (value
)) >= 0 && XINT (XCDR (value
)) >= 0)
858 case IMAGE_ASCENT_VALUE
:
859 if (SYMBOLP (value
) && EQ (value
, Qcenter
))
861 else if (INTEGERP (value
)
863 && XINT (value
) <= 100)
867 case IMAGE_NON_NEGATIVE_INTEGER_VALUE
:
868 if (!INTEGERP (value
) || XINT (value
) < 0)
872 case IMAGE_DONT_CHECK_VALUE_TYPE
:
875 case IMAGE_FUNCTION_VALUE
:
876 value
= indirect_function (value
);
879 || (CONSP (value
) && EQ (XCAR (value
), Qlambda
)))
883 case IMAGE_NUMBER_VALUE
:
884 if (!INTEGERP (value
) && !FLOATP (value
))
888 case IMAGE_INTEGER_VALUE
:
889 if (!INTEGERP (value
))
893 case IMAGE_BOOL_VALUE
:
894 if (!NILP (value
) && !EQ (value
, Qt
))
903 if (EQ (key
, QCtype
) && !EQ (type
, value
))
907 /* Check that all mandatory fields are present. */
908 for (i
= 0; i
< nkeywords
; ++i
)
909 if (keywords
[i
].mandatory_p
&& keywords
[i
].count
== 0)
916 /* Return the value of KEY in image specification SPEC. Value is nil
917 if KEY is not present in SPEC. if FOUND is not null, set *FOUND
918 to 1 if KEY was found in SPEC, set it to 0 otherwise. */
921 image_spec_value (spec
, key
, found
)
922 Lisp_Object spec
, key
;
927 xassert (valid_image_p (spec
));
929 for (tail
= XCDR (spec
);
930 CONSP (tail
) && CONSP (XCDR (tail
));
931 tail
= XCDR (XCDR (tail
)))
933 if (EQ (XCAR (tail
), key
))
937 return XCAR (XCDR (tail
));
947 DEFUN ("image-size", Fimage_size
, Simage_size
, 1, 3, 0,
948 doc
: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
949 PIXELS non-nil means return the size in pixels, otherwise return the
950 size in canonical character units.
951 FRAME is the frame on which the image will be displayed. FRAME nil
952 or omitted means use the selected frame. */)
953 (spec
, pixels
, frame
)
954 Lisp_Object spec
, pixels
, frame
;
959 if (valid_image_p (spec
))
961 struct frame
*f
= check_x_frame (frame
);
962 int id
= lookup_image (f
, spec
);
963 struct image
*img
= IMAGE_FROM_ID (f
, id
);
964 int width
= img
->width
+ 2 * img
->hmargin
;
965 int height
= img
->height
+ 2 * img
->vmargin
;
968 size
= Fcons (make_float ((double) width
/ FRAME_COLUMN_WIDTH (f
)),
969 make_float ((double) height
/ FRAME_LINE_HEIGHT (f
)));
971 size
= Fcons (make_number (width
), make_number (height
));
974 error ("Invalid image specification");
980 DEFUN ("image-mask-p", Fimage_mask_p
, Simage_mask_p
, 1, 2, 0,
981 doc
: /* Return t if image SPEC has a mask bitmap.
982 FRAME is the frame on which the image will be displayed. FRAME nil
983 or omitted means use the selected frame. */)
985 Lisp_Object spec
, frame
;
990 if (valid_image_p (spec
))
992 struct frame
*f
= check_x_frame (frame
);
993 int id
= lookup_image (f
, spec
);
994 struct image
*img
= IMAGE_FROM_ID (f
, id
);
999 error ("Invalid image specification");
1005 /***********************************************************************
1006 Image type independent image structures
1007 ***********************************************************************/
1009 static struct image
*make_image
P_ ((Lisp_Object spec
, unsigned hash
));
1010 static void free_image
P_ ((struct frame
*f
, struct image
*img
));
1013 /* Allocate and return a new image structure for image specification
1014 SPEC. SPEC has a hash value of HASH. */
1016 static struct image
*
1017 make_image (spec
, hash
)
1021 struct image
*img
= (struct image
*) xmalloc (sizeof *img
);
1023 xassert (valid_image_p (spec
));
1024 bzero (img
, sizeof *img
);
1025 img
->type
= lookup_image_type (image_spec_value (spec
, QCtype
, NULL
));
1026 xassert (img
->type
!= NULL
);
1028 img
->data
.lisp_val
= Qnil
;
1029 img
->ascent
= DEFAULT_IMAGE_ASCENT
;
1035 /* Free image IMG which was used on frame F, including its resources. */
1044 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1046 /* Remove IMG from the hash table of its cache. */
1048 img
->prev
->next
= img
->next
;
1050 c
->buckets
[img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
] = img
->next
;
1053 img
->next
->prev
= img
->prev
;
1055 c
->images
[img
->id
] = NULL
;
1057 /* Free resources, then free IMG. */
1058 img
->type
->free (f
, img
);
1064 /* Prepare image IMG for display on frame F. Must be called before
1065 drawing an image. */
1068 prepare_image_for_display (f
, img
)
1074 /* We're about to display IMG, so set its timestamp to `now'. */
1076 img
->timestamp
= EMACS_SECS (t
);
1078 /* If IMG doesn't have a pixmap yet, load it now, using the image
1079 type dependent loader function. */
1080 if (img
->pixmap
== NO_PIXMAP
&& !img
->load_failed_p
)
1081 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1085 /* Value is the number of pixels for the ascent of image IMG when
1086 drawn in face FACE. */
1089 image_ascent (img
, face
)
1093 int height
= img
->height
+ img
->vmargin
;
1096 if (img
->ascent
== CENTERED_IMAGE_ASCENT
)
1101 /* W32 specific version. Why?. ++kfs */
1102 ascent
= height
/ 2 - (FONT_DESCENT(face
->font
)
1103 - FONT_BASE(face
->font
)) / 2;
1105 /* This expression is arranged so that if the image can't be
1106 exactly centered, it will be moved slightly up. This is
1107 because a typical font is `top-heavy' (due to the presence
1108 uppercase letters), so the image placement should err towards
1109 being top-heavy too. It also just generally looks better. */
1110 ascent
= (height
+ face
->font
->ascent
- face
->font
->descent
+ 1) / 2;
1111 #endif /* HAVE_NTGUI */
1114 ascent
= height
/ 2;
1117 ascent
= (int) (height
* img
->ascent
/ 100.0);
1123 /* Image background colors. */
1125 /* Find the "best" corner color of a bitmap.
1126 On W32, XIMG is assumed to a device context with the bitmap selected. */
1128 static RGB_PIXEL_COLOR
1129 four_corners_best (ximg
, width
, height
)
1130 XImagePtr_or_DC ximg
;
1131 unsigned long width
, height
;
1133 RGB_PIXEL_COLOR corners
[4], best
;
1136 /* Get the colors at the corners of ximg. */
1137 corners
[0] = GET_PIXEL (ximg
, 0, 0);
1138 corners
[1] = GET_PIXEL (ximg
, width
- 1, 0);
1139 corners
[2] = GET_PIXEL (ximg
, width
- 1, height
- 1);
1140 corners
[3] = GET_PIXEL (ximg
, 0, height
- 1);
1142 /* Choose the most frequently found color as background. */
1143 for (i
= best_count
= 0; i
< 4; ++i
)
1147 for (j
= n
= 0; j
< 4; ++j
)
1148 if (corners
[i
] == corners
[j
])
1152 best
= corners
[i
], best_count
= n
;
1158 /* Portability macros */
1162 #define Destroy_Image(img_dc, prev) \
1163 do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0)
1165 #define Free_Pixmap(display, pixmap) \
1166 DeleteObject (pixmap)
1170 #define Destroy_Image(ximg, dummy) \
1171 XDestroyImage (ximg)
1173 #define Free_Pixmap(display, pixmap) \
1174 XFreePixmap (display, pixmap)
1176 #endif /* HAVE_NTGUI */
1179 /* Return the `background' field of IMG. If IMG doesn't have one yet,
1180 it is guessed heuristically. If non-zero, XIMG is an existing
1181 XImage object (or device context with the image selected on W32) to
1182 use for the heuristic. */
1185 image_background (img
, f
, ximg
)
1188 XImagePtr_or_DC ximg
;
1190 if (! img
->background_valid
)
1191 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1193 int free_ximg
= !ximg
;
1196 #endif /* HAVE_NTGUI */
1201 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
1202 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1204 HDC frame_dc
= get_frame_dc (f
);
1205 ximg
= CreateCompatibleDC (frame_dc
);
1206 release_frame_dc (f
, frame_dc
);
1207 prev
= SelectObject (ximg
, img
->pixmap
);
1208 #endif /* !HAVE_NTGUI */
1211 img
->background
= four_corners_best (ximg
, img
->width
, img
->height
);
1214 Destroy_Image (ximg
, prev
);
1216 img
->background_valid
= 1;
1219 return img
->background
;
1222 /* Return the `background_transparent' field of IMG. If IMG doesn't
1223 have one yet, it is guessed heuristically. If non-zero, MASK is an
1224 existing XImage object to use for the heuristic. */
1227 image_background_transparent (img
, f
, mask
)
1230 XImagePtr_or_DC mask
;
1232 if (! img
->background_transparent_valid
)
1233 /* IMG doesn't have a background yet, try to guess a reasonable value. */
1237 int free_mask
= !mask
;
1240 #endif /* HAVE_NTGUI */
1245 mask
= XGetImage (FRAME_X_DISPLAY (f
), img
->mask
,
1246 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
1248 HDC frame_dc
= get_frame_dc (f
);
1249 mask
= CreateCompatibleDC (frame_dc
);
1250 release_frame_dc (f
, frame_dc
);
1251 prev
= SelectObject (mask
, img
->mask
);
1252 #endif /* HAVE_NTGUI */
1255 img
->background_transparent
1256 = (four_corners_best (mask
, img
->width
, img
->height
) == PIX_MASK_RETAIN (f
));
1259 Destroy_Image (mask
, prev
);
1262 img
->background_transparent
= 0;
1264 img
->background_transparent_valid
= 1;
1267 return img
->background_transparent
;
1271 /***********************************************************************
1272 Helper functions for X image types
1273 ***********************************************************************/
1275 static void x_clear_image_1
P_ ((struct frame
*, struct image
*, int,
1277 static void x_clear_image
P_ ((struct frame
*f
, struct image
*img
));
1278 static unsigned long x_alloc_image_color
P_ ((struct frame
*f
,
1280 Lisp_Object color_name
,
1281 unsigned long dflt
));
1284 /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
1285 free the pixmap if any. MASK_P non-zero means clear the mask
1286 pixmap if any. COLORS_P non-zero means free colors allocated for
1287 the image, if any. */
1290 x_clear_image_1 (f
, img
, pixmap_p
, mask_p
, colors_p
)
1293 int pixmap_p
, mask_p
, colors_p
;
1295 if (pixmap_p
&& img
->pixmap
)
1297 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
1298 img
->pixmap
= NO_PIXMAP
;
1299 img
->background_valid
= 0;
1302 if (mask_p
&& img
->mask
)
1304 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1305 img
->mask
= NO_PIXMAP
;
1306 img
->background_transparent_valid
= 0;
1309 if (colors_p
&& img
->ncolors
)
1311 /* MAC_TODO: color table support. */
1312 /* W32_TODO: color table support. */
1313 #ifdef HAVE_X_WINDOWS
1314 x_free_colors (f
, img
->colors
, img
->ncolors
);
1315 #endif /* HAVE_X_WINDOWS */
1316 xfree (img
->colors
);
1322 /* Free X resources of image IMG which is used on frame F. */
1325 x_clear_image (f
, img
)
1330 x_clear_image_1 (f
, img
, 1, 1, 1);
1335 /* Allocate color COLOR_NAME for image IMG on frame F. If color
1336 cannot be allocated, use DFLT. Add a newly allocated color to
1337 IMG->colors, so that it can be freed again. Value is the pixel
1340 static unsigned long
1341 x_alloc_image_color (f
, img
, color_name
, dflt
)
1344 Lisp_Object color_name
;
1348 unsigned long result
;
1350 xassert (STRINGP (color_name
));
1352 if (x_defined_color (f
, SDATA (color_name
), &color
, 1))
1354 /* This isn't called frequently so we get away with simply
1355 reallocating the color vector to the needed size, here. */
1358 (unsigned long *) xrealloc (img
->colors
,
1359 img
->ncolors
* sizeof *img
->colors
);
1360 img
->colors
[img
->ncolors
- 1] = color
.pixel
;
1361 result
= color
.pixel
;
1371 /***********************************************************************
1373 ***********************************************************************/
1375 static void cache_image
P_ ((struct frame
*f
, struct image
*img
));
1376 static void postprocess_image
P_ ((struct frame
*, struct image
*));
1378 /* Return a new, initialized image cache that is allocated from the
1379 heap. Call free_image_cache to free an image cache. */
1381 struct image_cache
*
1384 struct image_cache
*c
= (struct image_cache
*) xmalloc (sizeof *c
);
1387 bzero (c
, sizeof *c
);
1389 c
->images
= (struct image
**) xmalloc (c
->size
* sizeof *c
->images
);
1390 size
= IMAGE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
1391 c
->buckets
= (struct image
**) xmalloc (size
);
1392 bzero (c
->buckets
, size
);
1397 /* Free image cache of frame F. Be aware that X frames share images
1401 free_image_cache (f
)
1404 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1409 /* Cache should not be referenced by any frame when freed. */
1410 xassert (c
->refcount
== 0);
1412 for (i
= 0; i
< c
->used
; ++i
)
1413 free_image (f
, c
->images
[i
]);
1417 FRAME_X_IMAGE_CACHE (f
) = NULL
;
1422 /* Clear image cache of frame F. FORCE_P non-zero means free all
1423 images. FORCE_P zero means clear only images that haven't been
1424 displayed for some time. Should be called from time to time to
1425 reduce the number of loaded images. If image-eviction-seconds is
1426 non-nil, this frees images in the cache which weren't displayed for
1427 at least that many seconds. */
1430 clear_image_cache (f
, force_p
)
1434 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1436 if (c
&& INTEGERP (Vimage_cache_eviction_delay
))
1443 old
= EMACS_SECS (t
) - XFASTINT (Vimage_cache_eviction_delay
);
1445 /* Block input so that we won't be interrupted by a SIGIO
1446 while being in an inconsistent state. */
1449 for (i
= nfreed
= 0; i
< c
->used
; ++i
)
1451 struct image
*img
= c
->images
[i
];
1453 && (force_p
|| img
->timestamp
< old
))
1455 free_image (f
, img
);
1460 /* We may be clearing the image cache because, for example,
1461 Emacs was iconified for a longer period of time. In that
1462 case, current matrices may still contain references to
1463 images freed above. So, clear these matrices. */
1466 Lisp_Object tail
, frame
;
1468 FOR_EACH_FRAME (tail
, frame
)
1470 struct frame
*f
= XFRAME (frame
);
1471 if (FRAME_WINDOW_P (f
)
1472 && FRAME_X_IMAGE_CACHE (f
) == c
)
1473 clear_current_matrices (f
);
1476 ++windows_or_buffers_changed
;
1484 DEFUN ("clear-image-cache", Fclear_image_cache
, Sclear_image_cache
,
1486 doc
: /* Clear the image cache of FRAME.
1487 FRAME nil or omitted means use the selected frame.
1488 FRAME t means clear the image caches of all frames. */)
1496 FOR_EACH_FRAME (tail
, frame
)
1497 if (FRAME_WINDOW_P (XFRAME (frame
)))
1498 clear_image_cache (XFRAME (frame
), 1);
1501 clear_image_cache (check_x_frame (frame
), 1);
1507 /* Compute masks and transform image IMG on frame F, as specified
1508 by the image's specification, */
1511 postprocess_image (f
, img
)
1515 /* Manipulation of the image's mask. */
1518 Lisp_Object conversion
, spec
;
1523 /* `:heuristic-mask t'
1525 means build a mask heuristically.
1526 `:heuristic-mask (R G B)'
1527 `:mask (heuristic (R G B))'
1528 means build a mask from color (R G B) in the
1531 means remove a mask, if any. */
1533 mask
= image_spec_value (spec
, QCheuristic_mask
, NULL
);
1535 x_build_heuristic_mask (f
, img
, mask
);
1540 mask
= image_spec_value (spec
, QCmask
, &found_p
);
1542 if (EQ (mask
, Qheuristic
))
1543 x_build_heuristic_mask (f
, img
, Qt
);
1544 else if (CONSP (mask
)
1545 && EQ (XCAR (mask
), Qheuristic
))
1547 if (CONSP (XCDR (mask
)))
1548 x_build_heuristic_mask (f
, img
, XCAR (XCDR (mask
)));
1550 x_build_heuristic_mask (f
, img
, XCDR (mask
));
1552 else if (NILP (mask
) && found_p
&& img
->mask
)
1554 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
1555 img
->mask
= NO_PIXMAP
;
1560 /* Should we apply an image transformation algorithm? */
1561 conversion
= image_spec_value (spec
, QCconversion
, NULL
);
1562 if (EQ (conversion
, Qdisabled
))
1563 x_disable_image (f
, img
);
1564 else if (EQ (conversion
, Qlaplace
))
1566 else if (EQ (conversion
, Qemboss
))
1568 else if (CONSP (conversion
)
1569 && EQ (XCAR (conversion
), Qedge_detection
))
1572 tem
= XCDR (conversion
);
1574 x_edge_detection (f
, img
,
1575 Fplist_get (tem
, QCmatrix
),
1576 Fplist_get (tem
, QCcolor_adjustment
));
1582 /* Return the id of image with Lisp specification SPEC on frame F.
1583 SPEC must be a valid Lisp image specification (see valid_image_p). */
1586 lookup_image (f
, spec
)
1590 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1594 struct gcpro gcpro1
;
1597 /* F must be a window-system frame, and SPEC must be a valid image
1599 xassert (FRAME_WINDOW_P (f
));
1600 xassert (valid_image_p (spec
));
1604 /* Look up SPEC in the hash table of the image cache. */
1605 hash
= sxhash (spec
, 0);
1606 i
= hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1608 for (img
= c
->buckets
[i
]; img
; img
= img
->next
)
1609 if (img
->hash
== hash
&& !NILP (Fequal (img
->spec
, spec
)))
1612 /* If not found, create a new image and cache it. */
1615 extern Lisp_Object Qpostscript
;
1618 img
= make_image (spec
, hash
);
1619 cache_image (f
, img
);
1620 img
->load_failed_p
= img
->type
->load (f
, img
) == 0;
1622 /* If we can't load the image, and we don't have a width and
1623 height, use some arbitrary width and height so that we can
1624 draw a rectangle for it. */
1625 if (img
->load_failed_p
)
1629 value
= image_spec_value (spec
, QCwidth
, NULL
);
1630 img
->width
= (INTEGERP (value
)
1631 ? XFASTINT (value
) : DEFAULT_IMAGE_WIDTH
);
1632 value
= image_spec_value (spec
, QCheight
, NULL
);
1633 img
->height
= (INTEGERP (value
)
1634 ? XFASTINT (value
) : DEFAULT_IMAGE_HEIGHT
);
1638 /* Handle image type independent image attributes
1639 `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
1640 `:background COLOR'. */
1641 Lisp_Object ascent
, margin
, relief
, bg
;
1643 ascent
= image_spec_value (spec
, QCascent
, NULL
);
1644 if (INTEGERP (ascent
))
1645 img
->ascent
= XFASTINT (ascent
);
1646 else if (EQ (ascent
, Qcenter
))
1647 img
->ascent
= CENTERED_IMAGE_ASCENT
;
1649 margin
= image_spec_value (spec
, QCmargin
, NULL
);
1650 if (INTEGERP (margin
) && XINT (margin
) >= 0)
1651 img
->vmargin
= img
->hmargin
= XFASTINT (margin
);
1652 else if (CONSP (margin
) && INTEGERP (XCAR (margin
))
1653 && INTEGERP (XCDR (margin
)))
1655 if (XINT (XCAR (margin
)) > 0)
1656 img
->hmargin
= XFASTINT (XCAR (margin
));
1657 if (XINT (XCDR (margin
)) > 0)
1658 img
->vmargin
= XFASTINT (XCDR (margin
));
1661 relief
= image_spec_value (spec
, QCrelief
, NULL
);
1662 if (INTEGERP (relief
))
1664 img
->relief
= XINT (relief
);
1665 img
->hmargin
+= abs (img
->relief
);
1666 img
->vmargin
+= abs (img
->relief
);
1669 if (! img
->background_valid
)
1671 bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
1675 = x_alloc_image_color (f
, img
, bg
,
1676 FRAME_BACKGROUND_PIXEL (f
));
1677 img
->background_valid
= 1;
1681 /* Do image transformations and compute masks, unless we
1682 don't have the image yet. */
1683 if (!EQ (*img
->type
->type
, Qpostscript
))
1684 postprocess_image (f
, img
);
1690 /* We're using IMG, so set its timestamp to `now'. */
1691 EMACS_GET_TIME (now
);
1692 img
->timestamp
= EMACS_SECS (now
);
1696 /* Value is the image id. */
1701 /* Cache image IMG in the image cache of frame F. */
1704 cache_image (f
, img
)
1708 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1711 /* Find a free slot in c->images. */
1712 for (i
= 0; i
< c
->used
; ++i
)
1713 if (c
->images
[i
] == NULL
)
1716 /* If no free slot found, maybe enlarge c->images. */
1717 if (i
== c
->used
&& c
->used
== c
->size
)
1720 c
->images
= (struct image
**) xrealloc (c
->images
,
1721 c
->size
* sizeof *c
->images
);
1724 /* Add IMG to c->images, and assign IMG an id. */
1730 /* Add IMG to the cache's hash table. */
1731 i
= img
->hash
% IMAGE_CACHE_BUCKETS_SIZE
;
1732 img
->next
= c
->buckets
[i
];
1734 img
->next
->prev
= img
;
1736 c
->buckets
[i
] = img
;
1740 /* Call FN on every image in the image cache of frame F. Used to mark
1741 Lisp Objects in the image cache. */
1744 forall_images_in_image_cache (f
, fn
)
1746 void (*fn
) P_ ((struct image
*img
));
1748 if (FRAME_LIVE_P (f
) && FRAME_WINDOW_P (f
))
1750 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
1754 for (i
= 0; i
< c
->used
; ++i
)
1763 /***********************************************************************
1764 X / MAC / W32 support code
1765 ***********************************************************************/
1769 /* Macro for defining functions that will be loaded from image DLLs. */
1770 #define DEF_IMGLIB_FN(func) FARPROC fn_##func
1772 /* Macro for loading those image functions from the library. */
1773 #define LOAD_IMGLIB_FN(lib,func) { \
1774 fn_##func = (void *) GetProcAddress (lib, #func); \
1775 if (!fn_##func) return 0; \
1778 #endif /* HAVE_NTGUI */
1780 static int x_create_x_image_and_pixmap
P_ ((struct frame
*, int, int, int,
1781 XImagePtr
*, Pixmap
*));
1782 static void x_destroy_x_image
P_ ((XImagePtr
));
1783 static void x_put_x_image
P_ ((struct frame
*, XImagePtr
, Pixmap
, int, int));
1786 /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
1787 frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
1788 Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
1789 via xmalloc. Print error messages via image_error if an error
1790 occurs. Value is non-zero if successful.
1792 On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH
1793 should indicate the bit depth of the image. */
1796 x_create_x_image_and_pixmap (f
, width
, height
, depth
, ximg
, pixmap
)
1798 int width
, height
, depth
;
1802 #ifdef HAVE_X_WINDOWS
1803 Display
*display
= FRAME_X_DISPLAY (f
);
1804 Window window
= FRAME_X_WINDOW (f
);
1805 Screen
*screen
= FRAME_X_SCREEN (f
);
1807 xassert (interrupt_input_blocked
);
1810 depth
= DefaultDepthOfScreen (screen
);
1811 *ximg
= XCreateImage (display
, DefaultVisualOfScreen (screen
),
1812 depth
, ZPixmap
, 0, NULL
, width
, height
,
1813 depth
> 16 ? 32 : depth
> 8 ? 16 : 8, 0);
1816 image_error ("Unable to allocate X image", Qnil
, Qnil
);
1820 /* Allocate image raster. */
1821 (*ximg
)->data
= (char *) xmalloc ((*ximg
)->bytes_per_line
* height
);
1823 /* Allocate a pixmap of the same size. */
1824 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1825 if (*pixmap
== NO_PIXMAP
)
1827 x_destroy_x_image (*ximg
);
1829 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1834 #endif /* HAVE_X_WINDOWS */
1838 BITMAPINFOHEADER
*header
;
1840 int scanline_width_bits
;
1842 int palette_colors
= 0;
1847 if (depth
!= 1 && depth
!= 4 && depth
!= 8
1848 && depth
!= 16 && depth
!= 24 && depth
!= 32)
1850 image_error ("Invalid image bit depth specified", Qnil
, Qnil
);
1854 scanline_width_bits
= width
* depth
;
1855 remainder
= scanline_width_bits
% 32;
1858 scanline_width_bits
+= 32 - remainder
;
1860 /* Bitmaps with a depth less than 16 need a palette. */
1861 /* BITMAPINFO structure already contains the first RGBQUAD. */
1863 palette_colors
= 1 << depth
- 1;
1865 *ximg
= xmalloc (sizeof (XImage
) + palette_colors
* sizeof (RGBQUAD
));
1868 image_error ("Unable to allocate memory for XImage", Qnil
, Qnil
);
1872 header
= &((*ximg
)->info
.bmiHeader
);
1873 bzero (&((*ximg
)->info
), sizeof (BITMAPINFO
));
1874 header
->biSize
= sizeof (*header
);
1875 header
->biWidth
= width
;
1876 header
->biHeight
= -height
; /* negative indicates a top-down bitmap. */
1877 header
->biPlanes
= 1;
1878 header
->biBitCount
= depth
;
1879 header
->biCompression
= BI_RGB
;
1880 header
->biClrUsed
= palette_colors
;
1882 /* TODO: fill in palette. */
1885 (*ximg
)->info
.bmiColors
[0].rgbBlue
= 0;
1886 (*ximg
)->info
.bmiColors
[0].rgbGreen
= 0;
1887 (*ximg
)->info
.bmiColors
[0].rgbRed
= 0;
1888 (*ximg
)->info
.bmiColors
[0].rgbReserved
= 0;
1889 (*ximg
)->info
.bmiColors
[1].rgbBlue
= 255;
1890 (*ximg
)->info
.bmiColors
[1].rgbGreen
= 255;
1891 (*ximg
)->info
.bmiColors
[1].rgbRed
= 255;
1892 (*ximg
)->info
.bmiColors
[1].rgbReserved
= 0;
1895 hdc
= get_frame_dc (f
);
1897 /* Create a DIBSection and raster array for the bitmap,
1898 and store its handle in *pixmap. */
1899 *pixmap
= CreateDIBSection (hdc
, &((*ximg
)->info
),
1900 (depth
< 16) ? DIB_PAL_COLORS
: DIB_RGB_COLORS
,
1901 &((*ximg
)->data
), NULL
, 0);
1903 /* Realize display palette and garbage all frames. */
1904 release_frame_dc (f
, hdc
);
1906 if (*pixmap
== NULL
)
1908 DWORD err
= GetLastError();
1909 Lisp_Object errcode
;
1910 /* All system errors are < 10000, so the following is safe. */
1911 XSETINT (errcode
, (int) err
);
1912 image_error ("Unable to create bitmap, error code %d", errcode
, Qnil
);
1913 x_destroy_x_image (*ximg
);
1919 #endif /* HAVE_NTGUI */
1922 Display
*display
= FRAME_X_DISPLAY (f
);
1923 Window window
= FRAME_X_WINDOW (f
);
1925 xassert (interrupt_input_blocked
);
1927 /* Allocate a pixmap of the same size. */
1928 *pixmap
= XCreatePixmap (display
, window
, width
, height
, depth
);
1929 if (*pixmap
== NO_PIXMAP
)
1931 x_destroy_x_image (*ximg
);
1933 image_error ("Unable to create X pixmap", Qnil
, Qnil
);
1937 LockPixels (GetGWorldPixMap (*pixmap
));
1945 /* Destroy XImage XIMG. Free XIMG->data. */
1948 x_destroy_x_image (ximg
)
1951 xassert (interrupt_input_blocked
);
1954 #ifdef HAVE_X_WINDOWS
1957 XDestroyImage (ximg
);
1958 #endif /* HAVE_X_WINDOWS */
1960 /* Data will be freed by DestroyObject. */
1963 #endif /* HAVE_NTGUI */
1965 XDestroyImage (ximg
);
1971 /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
1972 are width and height of both the image and pixmap. */
1975 x_put_x_image (f
, ximg
, pixmap
, width
, height
)
1981 #ifdef HAVE_X_WINDOWS
1984 xassert (interrupt_input_blocked
);
1985 gc
= XCreateGC (FRAME_X_DISPLAY (f
), pixmap
, 0, NULL
);
1986 XPutImage (FRAME_X_DISPLAY (f
), pixmap
, gc
, ximg
, 0, 0, 0, 0, width
, height
);
1987 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
1988 #endif /* HAVE_X_WINDOWS */
1991 #if 0 /* I don't think this is necessary looking at where it is used. */
1992 HDC hdc
= get_frame_dc (f
);
1993 SetDIBits (hdc
, pixmap
, 0, height
, ximg
->data
, &(ximg
->info
), DIB_RGB_COLORS
);
1994 release_frame_dc (f
, hdc
);
1996 #endif /* HAVE_NTGUI */
1999 xassert (ximg
== pixmap
);
2004 /***********************************************************************
2006 ***********************************************************************/
2008 static Lisp_Object x_find_image_file
P_ ((Lisp_Object
));
2009 static unsigned char *slurp_file
P_ ((char *, int *));
2012 /* Find image file FILE. Look in data-directory, then
2013 x-bitmap-file-path. Value is the full name of the file found, or
2014 nil if not found. */
2017 x_find_image_file (file
)
2020 Lisp_Object file_found
, search_path
;
2021 struct gcpro gcpro1
, gcpro2
;
2025 search_path
= Fcons (Vdata_directory
, Vx_bitmap_file_path
);
2026 GCPRO2 (file_found
, search_path
);
2028 /* Try to find FILE in data-directory, then x-bitmap-file-path. */
2029 fd
= openp (search_path
, file
, Qnil
, &file_found
, Qnil
);
2041 /* Read FILE into memory. Value is a pointer to a buffer allocated
2042 with xmalloc holding FILE's contents. Value is null if an error
2043 occurred. *SIZE is set to the size of the file. */
2045 static unsigned char *
2046 slurp_file (file
, size
)
2051 unsigned char *buf
= NULL
;
2054 if (stat (file
, &st
) == 0
2055 && (fp
= fopen (file
, "rb")) != NULL
2056 && (buf
= (char *) xmalloc (st
.st_size
),
2057 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
2080 /***********************************************************************
2081 MAC Image Load Functions
2082 ***********************************************************************/
2084 static int image_load_quicktime
P_ ((struct frame
*, struct image
*img
,
2087 static int image_load_quartz2d
P_ ((struct frame
*, struct image
*img
, int));
2091 find_image_fsspec (specified_file
, file
, fss
)
2092 Lisp_Object specified_file
, *file
;
2095 #if TARGET_API_MAC_CARBON
2098 Str255 mac_pathname
;
2102 *file
= x_find_image_file (specified_file
);
2103 if (!STRINGP (*file
))
2104 return fnfErr
; /* file or directory not found;
2105 incomplete pathname */
2106 /* Try to open the image file. */
2107 #if TARGET_API_MAC_CARBON
2108 err
= FSPathMakeRef (SDATA (*file
), &fsr
, NULL
);
2110 err
= FSGetCatalogInfo (&fsr
, kFSCatInfoNone
, NULL
, NULL
, fss
, NULL
);
2112 if (posix_to_mac_pathname (SDATA (*file
), mac_pathname
, MAXPATHLEN
+1) == 0)
2114 c2pstr (mac_pathname
);
2115 err
= FSMakeFSSpec (0, 0, mac_pathname
, fss
);
2121 image_load_qt_1 (f
, img
, type
, fss
, dh
)
2129 GraphicsImportComponent gi
;
2132 short draw_all_pixels
;
2133 Lisp_Object specified_bg
;
2138 err
= OpenADefaultComponent (GraphicsImporterComponentType
,
2142 image_error ("Cannot get importer component for `%s'", img
->spec
, Qnil
);
2147 /* read from file system spec */
2148 err
= GraphicsImportSetDataFile (gi
, fss
);
2151 image_error ("Cannot set fsspec to graphics importer for '%s'",
2158 /* read from data handle */
2159 err
= GraphicsImportSetDataHandle (gi
, dh
);
2162 image_error ("Cannot set data handle to graphics importer for `%s'",
2167 err
= GraphicsImportGetNaturalBounds (gi
, &rect
);
2170 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2173 width
= img
->width
= rect
.right
- rect
.left
;
2174 height
= img
->height
= rect
.bottom
- rect
.top
;
2175 err
= GraphicsImportDoesDrawAllPixels (gi
, &draw_all_pixels
);
2177 /* Don't check the error code here. It may have an undocumented
2181 image_error ("Error reading `%s'", img
->spec
, Qnil
);
2185 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2187 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2188 if (!STRINGP (specified_bg
) ||
2189 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2191 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2192 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2193 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2194 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2198 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2200 if (draw_all_pixels
!= graphicsImporterDrawsAllPixels
)
2202 SetGWorld (ximg
, NULL
);
2203 bg_color
.red
= color
.red
;
2204 bg_color
.green
= color
.green
;
2205 bg_color
.blue
= color
.blue
;
2206 RGBBackColor (&bg_color
);
2207 #if TARGET_API_MAC_CARBON
2208 GetPortBounds (ximg
, &rect
);
2211 EraseRect (&(ximg
->portRect
));
2214 GraphicsImportSetGWorld (gi
, ximg
, NULL
);
2215 GraphicsImportDraw (gi
);
2216 CloseComponent (gi
);
2218 /* Maybe fill in the background field while we have ximg handy. */
2219 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2220 IMAGE_BACKGROUND (img
, f
, ximg
);
2222 /* Put the image into the pixmap. */
2223 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2224 x_destroy_x_image (ximg
);
2228 CloseComponent (gi
);
2233 /* Load an image using the QuickTime Graphics Importer.
2234 Note: The alpha channel does not work for PNG images. */
2236 image_load_quicktime (f
, img
, type
)
2241 Lisp_Object specified_file
;
2242 Lisp_Object specified_data
;
2245 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2246 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2248 if (NILP (specified_data
))
2250 /* Read from a file */
2254 err
= find_image_fsspec (specified_file
, &file
, &fss
);
2258 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2260 image_error ("Cannot open `%s'", file
, Qnil
);
2263 return image_load_qt_1 (f
, img
, type
, &fss
, NULL
);
2267 /* Memory source! */
2271 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
2274 image_error ("Cannot allocate data handle for `%s'",
2278 success_p
= image_load_qt_1 (f
, img
, type
, NULL
, dh
);
2286 /* Load a PNG/JPEG image using Quartz 2D decoding routines.
2287 CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2.
2288 So don't use this function directly but determine at runtime
2289 whether it exists. */
2290 typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType
)
2291 (CGDataProviderRef
, const float [], bool, CGColorRenderingIntent
);
2292 static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider
;
2296 init_image_func_pointer ()
2298 if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider"))
2300 MyCGImageCreateWithPNGDataProvider
2301 = (CGImageCreateWithPNGDataProviderProcType
)
2302 NSAddressOfSymbol (NSLookupAndBindSymbol
2303 ("_CGImageCreateWithPNGDataProvider"));
2306 MyCGImageCreateWithPNGDataProvider
= NULL
;
2311 image_load_quartz2d (f
, img
, png_p
)
2316 Lisp_Object file
, specified_file
;
2317 Lisp_Object specified_data
, specified_bg
;
2318 struct gcpro gcpro1
;
2319 CGDataProviderRef source
;
2323 XImagePtr ximg
= NULL
;
2324 CGContextRef context
;
2327 /* Open the file. */
2328 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
2329 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
2334 if (NILP (specified_data
))
2339 file
= x_find_image_file (specified_file
);
2340 if (!STRINGP (file
))
2342 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
2346 path
= CFStringCreateWithCString (NULL
, SDATA (file
),
2347 kCFStringEncodingUTF8
);
2348 url
= CFURLCreateWithFileSystemPath (NULL
, path
,
2349 kCFURLPOSIXPathStyle
, 0);
2351 source
= CGDataProviderCreateWithURL (url
);
2355 source
= CGDataProviderCreateWithData (NULL
, SDATA (specified_data
),
2356 SBYTES (specified_data
), NULL
);
2359 image
= (*MyCGImageCreateWithPNGDataProvider
) (source
, NULL
, FALSE
,
2360 kCGRenderingIntentDefault
);
2362 image
= CGImageCreateWithJPEGDataProvider (source
, NULL
, FALSE
,
2363 kCGRenderingIntentDefault
);
2365 CGDataProviderRelease (source
);
2369 image_error ("Error reading image `%s'", img
->spec
, Qnil
);
2375 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2376 if (!STRINGP (specified_bg
) ||
2377 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
2379 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
2380 color
.red
= RED16_FROM_ULONG (color
.pixel
);
2381 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
2382 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
2385 width
= img
->width
= CGImageGetWidth (image
);
2386 height
= img
->height
= CGImageGetHeight (image
);
2387 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
2389 CGImageRelease (image
);
2393 rectangle
= CGRectMake (0, 0, width
, height
);
2394 QDBeginCGContext (ximg
, &context
);
2397 CGContextSetRGBFillColor (context
, color
.red
/ 65535.0,
2398 color
.green
/ 65535.0,
2399 color
.blue
/ 65535.0, 1.0);
2400 CGContextFillRect (context
, rectangle
);
2402 CGContextDrawImage (context
, rectangle
, image
);
2403 QDEndCGContext (ximg
, &context
);
2404 CGImageRelease (image
);
2406 /* Maybe fill in the background field while we have ximg handy. */
2407 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
2408 IMAGE_BACKGROUND (img
, f
, ximg
);
2410 /* Put the image into the pixmap. */
2411 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
2412 x_destroy_x_image (ximg
);
2421 /***********************************************************************
2423 ***********************************************************************/
2425 static int xbm_scan
P_ ((unsigned char **, unsigned char *, char *, int *));
2426 static int xbm_load
P_ ((struct frame
*f
, struct image
*img
));
2427 static int xbm_load_image
P_ ((struct frame
*f
, struct image
*img
,
2428 unsigned char *, unsigned char *));
2429 static int xbm_image_p
P_ ((Lisp_Object object
));
2430 static int xbm_read_bitmap_data
P_ ((unsigned char *, unsigned char *,
2431 int *, int *, unsigned char **));
2432 static int xbm_file_p
P_ ((Lisp_Object
));
2435 /* Indices of image specification fields in xbm_format, below. */
2437 enum xbm_keyword_index
2455 /* Vector of image_keyword structures describing the format
2456 of valid XBM image specifications. */
2458 static struct image_keyword xbm_format
[XBM_LAST
] =
2460 {":type", IMAGE_SYMBOL_VALUE
, 1},
2461 {":file", IMAGE_STRING_VALUE
, 0},
2462 {":width", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2463 {":height", IMAGE_POSITIVE_INTEGER_VALUE
, 0},
2464 {":data", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2465 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
2466 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0},
2467 {":ascent", IMAGE_ASCENT_VALUE
, 0},
2468 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
2469 {":relief", IMAGE_INTEGER_VALUE
, 0},
2470 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2471 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
2472 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0}
2475 /* Structure describing the image type XBM. */
2477 static struct image_type xbm_type
=
2486 /* Tokens returned from xbm_scan. */
2495 /* Return non-zero if OBJECT is a valid XBM-type image specification.
2496 A valid specification is a list starting with the symbol `image'
2497 The rest of the list is a property list which must contain an
2500 If the specification specifies a file to load, it must contain
2501 an entry `:file FILENAME' where FILENAME is a string.
2503 If the specification is for a bitmap loaded from memory it must
2504 contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
2505 WIDTH and HEIGHT are integers > 0. DATA may be:
2507 1. a string large enough to hold the bitmap data, i.e. it must
2508 have a size >= (WIDTH + 7) / 8 * HEIGHT
2510 2. a bool-vector of size >= WIDTH * HEIGHT
2512 3. a vector of strings or bool-vectors, one for each line of the
2515 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
2516 may not be specified in this case because they are defined in the
2519 Both the file and data forms may contain the additional entries
2520 `:background COLOR' and `:foreground COLOR'. If not present,
2521 foreground and background of the frame on which the image is
2522 displayed is used. */
2525 xbm_image_p (object
)
2528 struct image_keyword kw
[XBM_LAST
];
2530 bcopy (xbm_format
, kw
, sizeof kw
);
2531 if (!parse_image_spec (object
, kw
, XBM_LAST
, Qxbm
))
2534 xassert (EQ (kw
[XBM_TYPE
].value
, Qxbm
));
2536 if (kw
[XBM_FILE
].count
)
2538 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_DATA
].count
)
2541 else if (kw
[XBM_DATA
].count
&& xbm_file_p (kw
[XBM_DATA
].value
))
2543 /* In-memory XBM file. */
2544 if (kw
[XBM_WIDTH
].count
|| kw
[XBM_HEIGHT
].count
|| kw
[XBM_FILE
].count
)
2552 /* Entries for `:width', `:height' and `:data' must be present. */
2553 if (!kw
[XBM_WIDTH
].count
2554 || !kw
[XBM_HEIGHT
].count
2555 || !kw
[XBM_DATA
].count
)
2558 data
= kw
[XBM_DATA
].value
;
2559 width
= XFASTINT (kw
[XBM_WIDTH
].value
);
2560 height
= XFASTINT (kw
[XBM_HEIGHT
].value
);
2562 /* Check type of data, and width and height against contents of
2568 /* Number of elements of the vector must be >= height. */
2569 if (XVECTOR (data
)->size
< height
)
2572 /* Each string or bool-vector in data must be large enough
2573 for one line of the image. */
2574 for (i
= 0; i
< height
; ++i
)
2576 Lisp_Object elt
= XVECTOR (data
)->contents
[i
];
2581 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
)
2584 else if (BOOL_VECTOR_P (elt
))
2586 if (XBOOL_VECTOR (elt
)->size
< width
)
2593 else if (STRINGP (data
))
2596 < (width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
* height
)
2599 else if (BOOL_VECTOR_P (data
))
2601 if (XBOOL_VECTOR (data
)->size
< width
* height
)
2612 /* Scan a bitmap file. FP is the stream to read from. Value is
2613 either an enumerator from enum xbm_token, or a character for a
2614 single-character token, or 0 at end of file. If scanning an
2615 identifier, store the lexeme of the identifier in SVAL. If
2616 scanning a number, store its value in *IVAL. */
2619 xbm_scan (s
, end
, sval
, ival
)
2620 unsigned char **s
, *end
;
2628 /* Skip white space. */
2629 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
2634 else if (isdigit (c
))
2636 int value
= 0, digit
;
2638 if (c
== '0' && *s
< end
)
2641 if (c
== 'x' || c
== 'X')
2648 else if (c
>= 'a' && c
<= 'f')
2649 digit
= c
- 'a' + 10;
2650 else if (c
>= 'A' && c
<= 'F')
2651 digit
= c
- 'A' + 10;
2654 value
= 16 * value
+ digit
;
2657 else if (isdigit (c
))
2661 && (c
= *(*s
)++, isdigit (c
)))
2662 value
= 8 * value
+ c
- '0';
2669 && (c
= *(*s
)++, isdigit (c
)))
2670 value
= 10 * value
+ c
- '0';
2678 else if (isalpha (c
) || c
== '_')
2682 && (c
= *(*s
)++, (isalnum (c
) || c
== '_')))
2689 else if (c
== '/' && **s
== '*')
2691 /* C-style comment. */
2693 while (**s
&& (**s
!= '*' || *(*s
+ 1) != '/'))
2707 /* Create a Windows bitmap from X bitmap data. */
2709 w32_create_pixmap_from_bitmap_data (int width
, int height
, char *data
)
2711 static unsigned char swap_nibble
[16]
2712 = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */
2713 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */
2714 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */
2715 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */
2717 unsigned char *bits
, *p
;
2720 w1
= (width
+ 7) / 8; /* nb of 8bits elt in X bitmap */
2721 w2
= ((width
+ 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */
2722 bits
= (unsigned char *) alloca (height
* w2
);
2723 bzero (bits
, height
* w2
);
2724 for (i
= 0; i
< height
; i
++)
2727 for (j
= 0; j
< w1
; j
++)
2729 /* Bitswap XBM bytes to match how Windows does things. */
2730 unsigned char c
= *data
++;
2731 *p
++ = (unsigned char)((swap_nibble
[c
& 0xf] << 4)
2732 | (swap_nibble
[(c
>>4) & 0xf]));
2735 bmp
= CreateBitmap (width
, height
, 1, 1, (char *) bits
);
2740 static void convert_mono_to_color_image (f
, img
, foreground
, background
)
2743 COLORREF foreground
, background
;
2745 HDC hdc
, old_img_dc
, new_img_dc
;
2746 HGDIOBJ old_prev
, new_prev
;
2749 hdc
= get_frame_dc (f
);
2750 old_img_dc
= CreateCompatibleDC (hdc
);
2751 new_img_dc
= CreateCompatibleDC (hdc
);
2752 new_pixmap
= CreateCompatibleBitmap (hdc
, img
->width
, img
->height
);
2753 release_frame_dc (f
, hdc
);
2754 old_prev
= SelectObject (old_img_dc
, img
->pixmap
);
2755 new_prev
= SelectObject (new_img_dc
, new_pixmap
);
2756 SetTextColor (new_img_dc
, foreground
);
2757 SetBkColor (new_img_dc
, background
);
2759 BitBlt (new_img_dc
, 0, 0, img
->width
, img
->height
, old_img_dc
,
2762 SelectObject (old_img_dc
, old_prev
);
2763 SelectObject (new_img_dc
, new_prev
);
2764 DeleteDC (old_img_dc
);
2765 DeleteDC (new_img_dc
);
2766 DeleteObject (img
->pixmap
);
2767 if (new_pixmap
== 0)
2768 fprintf (stderr
, "Failed to convert image to color.\n");
2770 img
->pixmap
= new_pixmap
;
2773 #define XBM_BIT_SHUFFLE(b) (~(b))
2777 #define XBM_BIT_SHUFFLE(b) (b)
2779 #endif /* HAVE_NTGUI */
2783 Create_Pixmap_From_Bitmap_Data(f
, img
, data
, fg
, bg
, non_default_colors
)
2787 RGB_PIXEL_COLOR fg
, bg
;
2788 int non_default_colors
;
2792 = w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
, data
);
2794 /* If colors were specified, transfer the bitmap to a color one. */
2795 if (non_default_colors
)
2796 convert_mono_to_color_image (f
, img
, fg
, bg
);
2799 = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f
),
2802 img
->width
, img
->height
,
2804 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
2805 #endif /* HAVE_NTGUI */
2810 /* Replacement for XReadBitmapFileData which isn't available under old
2811 X versions. CONTENTS is a pointer to a buffer to parse; END is the
2812 buffer's end. Set *WIDTH and *HEIGHT to the width and height of
2813 the image. Return in *DATA the bitmap data allocated with xmalloc.
2814 Value is non-zero if successful. DATA null means just test if
2815 CONTENTS looks like an in-memory XBM file. */
2818 xbm_read_bitmap_data (contents
, end
, width
, height
, data
)
2819 unsigned char *contents
, *end
;
2820 int *width
, *height
;
2821 unsigned char **data
;
2823 unsigned char *s
= contents
;
2824 char buffer
[BUFSIZ
];
2827 int bytes_per_line
, i
, nbytes
;
2833 LA1 = xbm_scan (&s, end, buffer, &value)
2835 #define expect(TOKEN) \
2836 if (LA1 != (TOKEN)) \
2841 #define expect_ident(IDENT) \
2842 if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
2847 *width
= *height
= -1;
2850 LA1
= xbm_scan (&s
, end
, buffer
, &value
);
2852 /* Parse defines for width, height and hot-spots. */
2856 expect_ident ("define");
2857 expect (XBM_TK_IDENT
);
2859 if (LA1
== XBM_TK_NUMBER
);
2861 char *p
= strrchr (buffer
, '_');
2862 p
= p
? p
+ 1 : buffer
;
2863 if (strcmp (p
, "width") == 0)
2865 else if (strcmp (p
, "height") == 0)
2868 expect (XBM_TK_NUMBER
);
2871 if (*width
< 0 || *height
< 0)
2873 else if (data
== NULL
)
2876 /* Parse bits. Must start with `static'. */
2877 expect_ident ("static");
2878 if (LA1
== XBM_TK_IDENT
)
2880 if (strcmp (buffer
, "unsigned") == 0)
2883 expect_ident ("char");
2885 else if (strcmp (buffer
, "short") == 0)
2889 if (*width
% 16 && *width
% 16 < 9)
2892 else if (strcmp (buffer
, "char") == 0)
2900 expect (XBM_TK_IDENT
);
2906 bytes_per_line
= (*width
+ 7) / 8 + padding_p
;
2907 nbytes
= bytes_per_line
* *height
;
2908 p
= *data
= (char *) xmalloc (nbytes
);
2912 for (i
= 0; i
< nbytes
; i
+= 2)
2915 expect (XBM_TK_NUMBER
);
2917 *p
++ = XBM_BIT_SHUFFLE (val
);
2918 if (!padding_p
|| ((i
+ 2) % bytes_per_line
))
2919 *p
++ = XBM_BIT_SHUFFLE (value
>> 8);
2921 if (LA1
== ',' || LA1
== '}')
2929 for (i
= 0; i
< nbytes
; ++i
)
2932 expect (XBM_TK_NUMBER
);
2934 *p
++ = XBM_BIT_SHUFFLE (val
);
2936 if (LA1
== ',' || LA1
== '}')
2961 /* Load XBM image IMG which will be displayed on frame F from buffer
2962 CONTENTS. END is the end of the buffer. Value is non-zero if
2966 xbm_load_image (f
, img
, contents
, end
)
2969 unsigned char *contents
, *end
;
2972 unsigned char *data
;
2975 rc
= xbm_read_bitmap_data (contents
, end
, &img
->width
, &img
->height
, &data
);
2978 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
2979 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
2980 int non_default_colors
= 0;
2983 xassert (img
->width
> 0 && img
->height
> 0);
2985 /* Get foreground and background colors, maybe allocate colors. */
2986 value
= image_spec_value (img
->spec
, QCforeground
, NULL
);
2989 foreground
= x_alloc_image_color (f
, img
, value
, foreground
);
2990 non_default_colors
= 1;
2992 value
= image_spec_value (img
->spec
, QCbackground
, NULL
);
2995 background
= x_alloc_image_color (f
, img
, value
, background
);
2996 img
->background
= background
;
2997 img
->background_valid
= 1;
2998 non_default_colors
= 1;
3001 Create_Pixmap_From_Bitmap_Data (f
, img
, data
,
3002 foreground
, background
,
3003 non_default_colors
);
3006 if (img
->pixmap
== NO_PIXMAP
)
3008 x_clear_image (f
, img
);
3009 image_error ("Unable to create X pixmap for `%s'", img
->spec
, Qnil
);
3015 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3021 /* Value is non-zero if DATA looks like an in-memory XBM file. */
3028 return (STRINGP (data
)
3029 && xbm_read_bitmap_data (SDATA (data
),
3036 /* Fill image IMG which is used on frame F with pixmap data. Value is
3037 non-zero if successful. */
3045 Lisp_Object file_name
;
3047 xassert (xbm_image_p (img
->spec
));
3049 /* If IMG->spec specifies a file name, create a non-file spec from it. */
3050 file_name
= image_spec_value (img
->spec
, QCfile
, NULL
);
3051 if (STRINGP (file_name
))
3054 unsigned char *contents
;
3056 struct gcpro gcpro1
;
3058 file
= x_find_image_file (file_name
);
3060 if (!STRINGP (file
))
3062 image_error ("Cannot find image file `%s'", file_name
, Qnil
);
3067 contents
= slurp_file (SDATA (file
), &size
);
3068 if (contents
== NULL
)
3070 image_error ("Error loading XBM image `%s'", img
->spec
, Qnil
);
3075 success_p
= xbm_load_image (f
, img
, contents
, contents
+ size
);
3080 struct image_keyword fmt
[XBM_LAST
];
3082 unsigned long foreground
= FRAME_FOREGROUND_PIXEL (f
);
3083 unsigned long background
= FRAME_BACKGROUND_PIXEL (f
);
3084 int non_default_colors
= 0;
3087 int in_memory_file_p
= 0;
3089 /* See if data looks like an in-memory XBM file. */
3090 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
3091 in_memory_file_p
= xbm_file_p (data
);
3093 /* Parse the image specification. */
3094 bcopy (xbm_format
, fmt
, sizeof fmt
);
3095 parsed_p
= parse_image_spec (img
->spec
, fmt
, XBM_LAST
, Qxbm
);
3098 /* Get specified width, and height. */
3099 if (!in_memory_file_p
)
3101 img
->width
= XFASTINT (fmt
[XBM_WIDTH
].value
);
3102 img
->height
= XFASTINT (fmt
[XBM_HEIGHT
].value
);
3103 xassert (img
->width
> 0 && img
->height
> 0);
3106 /* Get foreground and background colors, maybe allocate colors. */
3107 if (fmt
[XBM_FOREGROUND
].count
3108 && STRINGP (fmt
[XBM_FOREGROUND
].value
))
3110 foreground
= x_alloc_image_color (f
, img
, fmt
[XBM_FOREGROUND
].value
,
3112 non_default_colors
= 1;
3115 if (fmt
[XBM_BACKGROUND
].count
3116 && STRINGP (fmt
[XBM_BACKGROUND
].value
))
3118 background
= x_alloc_image_color (f
, img
, fmt
[XBM_BACKGROUND
].value
,
3120 non_default_colors
= 1;
3123 if (in_memory_file_p
)
3124 success_p
= xbm_load_image (f
, img
, SDATA (data
),
3133 int nbytes
= (img
->width
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
3135 p
= bits
= (char *) alloca (nbytes
* img
->height
);
3136 for (i
= 0; i
< img
->height
; ++i
, p
+= nbytes
)
3138 Lisp_Object line
= XVECTOR (data
)->contents
[i
];
3140 bcopy (SDATA (line
), p
, nbytes
);
3142 bcopy (XBOOL_VECTOR (line
)->data
, p
, nbytes
);
3145 else if (STRINGP (data
))
3146 bits
= SDATA (data
);
3148 bits
= XBOOL_VECTOR (data
)->data
;
3150 /* Create the pixmap. */
3152 Create_Pixmap_From_Bitmap_Data (f
, img
, bits
,
3153 foreground
, background
,
3154 non_default_colors
);
3159 image_error ("Unable to create pixmap for XBM image `%s'",
3161 x_clear_image (f
, img
);
3171 /***********************************************************************
3173 ***********************************************************************/
3177 static int xpm_image_p
P_ ((Lisp_Object object
));
3178 static int xpm_load
P_ ((struct frame
*f
, struct image
*img
));
3179 static int xpm_valid_color_symbols_p
P_ ((Lisp_Object
));
3182 /* Indicate to xpm.h that we don't have Xlib. */
3184 /* simx.h in xpm defines XColor and XImage differently than Emacs. */
3185 #define XColor xpm_XColor
3186 #define XImage xpm_XImage
3187 #define PIXEL_ALREADY_TYPEDEFED
3188 #include "X11/xpm.h"
3192 #undef PIXEL_ALREADY_TYPEDEFED
3194 #include "X11/xpm.h"
3195 #endif /* HAVE_NTGUI */
3197 /* The symbol `xpm' identifying XPM-format images. */
3201 /* Indices of image specification fields in xpm_format, below. */
3203 enum xpm_keyword_index
3219 /* Vector of image_keyword structures describing the format
3220 of valid XPM image specifications. */
3222 static struct image_keyword xpm_format
[XPM_LAST
] =
3224 {":type", IMAGE_SYMBOL_VALUE
, 1},
3225 {":file", IMAGE_STRING_VALUE
, 0},
3226 {":data", IMAGE_STRING_VALUE
, 0},
3227 {":ascent", IMAGE_ASCENT_VALUE
, 0},
3228 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
3229 {":relief", IMAGE_INTEGER_VALUE
, 0},
3230 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3231 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3232 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3233 {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
3234 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
3237 /* Structure describing the image type XPM. */
3239 static struct image_type xpm_type
=
3248 #ifdef HAVE_X_WINDOWS
3250 /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
3251 functions for allocating image colors. Our own functions handle
3252 color allocation failures more gracefully than the ones on the XPM
3255 #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
3256 #define ALLOC_XPM_COLORS
3258 #endif /* HAVE_X_WINDOWS */
3260 #ifdef ALLOC_XPM_COLORS
3262 static void xpm_init_color_cache
P_ ((struct frame
*, XpmAttributes
*));
3263 static void xpm_free_color_cache
P_ ((void));
3264 static int xpm_lookup_color
P_ ((struct frame
*, char *, XColor
*));
3265 static int xpm_color_bucket
P_ ((char *));
3266 static struct xpm_cached_color
*xpm_cache_color
P_ ((struct frame
*, char *,
3269 /* An entry in a hash table used to cache color definitions of named
3270 colors. This cache is necessary to speed up XPM image loading in
3271 case we do color allocations ourselves. Without it, we would need
3272 a call to XParseColor per pixel in the image. */
3274 struct xpm_cached_color
3276 /* Next in collision chain. */
3277 struct xpm_cached_color
*next
;
3279 /* Color definition (RGB and pixel color). */
3286 /* The hash table used for the color cache, and its bucket vector
3289 #define XPM_COLOR_CACHE_BUCKETS 1001
3290 struct xpm_cached_color
**xpm_color_cache
;
3292 /* Initialize the color cache. */
3295 xpm_init_color_cache (f
, attrs
)
3297 XpmAttributes
*attrs
;
3299 size_t nbytes
= XPM_COLOR_CACHE_BUCKETS
* sizeof *xpm_color_cache
;
3300 xpm_color_cache
= (struct xpm_cached_color
**) xmalloc (nbytes
);
3301 memset (xpm_color_cache
, 0, nbytes
);
3302 init_color_table ();
3304 if (attrs
->valuemask
& XpmColorSymbols
)
3309 for (i
= 0; i
< attrs
->numsymbols
; ++i
)
3310 if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3311 attrs
->colorsymbols
[i
].value
, &color
))
3313 color
.pixel
= lookup_rgb_color (f
, color
.red
, color
.green
,
3315 xpm_cache_color (f
, attrs
->colorsymbols
[i
].name
, &color
, -1);
3320 /* Free the color cache. */
3323 xpm_free_color_cache ()
3325 struct xpm_cached_color
*p
, *next
;
3328 for (i
= 0; i
< XPM_COLOR_CACHE_BUCKETS
; ++i
)
3329 for (p
= xpm_color_cache
[i
]; p
; p
= next
)
3335 xfree (xpm_color_cache
);
3336 xpm_color_cache
= NULL
;
3337 free_color_table ();
3340 /* Return the bucket index for color named COLOR_NAME in the color
3344 xpm_color_bucket (color_name
)
3350 for (s
= color_name
; *s
; ++s
)
3352 return h
%= XPM_COLOR_CACHE_BUCKETS
;
3356 /* On frame F, cache values COLOR for color with name COLOR_NAME.
3357 BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
3360 static struct xpm_cached_color
*
3361 xpm_cache_color (f
, color_name
, color
, bucket
)
3368 struct xpm_cached_color
*p
;
3371 bucket
= xpm_color_bucket (color_name
);
3373 nbytes
= sizeof *p
+ strlen (color_name
);
3374 p
= (struct xpm_cached_color
*) xmalloc (nbytes
);
3375 strcpy (p
->name
, color_name
);
3377 p
->next
= xpm_color_cache
[bucket
];
3378 xpm_color_cache
[bucket
] = p
;
3382 /* Look up color COLOR_NAME for frame F in the color cache. If found,
3383 return the cached definition in *COLOR. Otherwise, make a new
3384 entry in the cache and allocate the color. Value is zero if color
3385 allocation failed. */
3388 xpm_lookup_color (f
, color_name
, color
)
3393 struct xpm_cached_color
*p
;
3394 int h
= xpm_color_bucket (color_name
);
3396 for (p
= xpm_color_cache
[h
]; p
; p
= p
->next
)
3397 if (strcmp (p
->name
, color_name
) == 0)
3402 else if (XParseColor (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
3405 color
->pixel
= lookup_rgb_color (f
, color
->red
, color
->green
,
3407 p
= xpm_cache_color (f
, color_name
, color
, h
);
3409 /* You get `opaque' at least from ImageMagick converting pbm to xpm
3410 with transparency, and it's useful. */
3411 else if (strcmp ("opaque", color_name
) == 0)
3413 bzero (color
, sizeof (XColor
)); /* Is this necessary/correct? */
3414 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
3415 p
= xpm_cache_color (f
, color_name
, color
, h
);
3422 /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
3423 CLOSURE is a pointer to the frame on which we allocate the
3424 color. Return in *COLOR the allocated color. Value is non-zero
3428 xpm_alloc_color (dpy
, cmap
, color_name
, color
, closure
)
3435 return xpm_lookup_color ((struct frame
*) closure
, color_name
, color
);
3439 /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
3440 is a pointer to the frame on which we allocate the color. Value is
3441 non-zero if successful. */
3444 xpm_free_colors (dpy
, cmap
, pixels
, npixels
, closure
)
3454 #endif /* ALLOC_XPM_COLORS */
3459 /* XPM library details. */
3461 DEF_IMGLIB_FN (XpmFreeAttributes
);
3462 DEF_IMGLIB_FN (XpmCreateImageFromBuffer
);
3463 DEF_IMGLIB_FN (XpmReadFileToImage
);
3464 DEF_IMGLIB_FN (XImageFree
);
3468 init_xpm_functions (void)
3472 if (!(library
= LoadLibrary ("libXpm.dll")))
3475 LOAD_IMGLIB_FN (library
, XpmFreeAttributes
);
3476 LOAD_IMGLIB_FN (library
, XpmCreateImageFromBuffer
);
3477 LOAD_IMGLIB_FN (library
, XpmReadFileToImage
);
3478 LOAD_IMGLIB_FN (library
, XImageFree
);
3482 #endif /* HAVE_NTGUI */
3485 /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
3486 for XPM images. Such a list must consist of conses whose car and
3490 xpm_valid_color_symbols_p (color_symbols
)
3491 Lisp_Object color_symbols
;
3493 while (CONSP (color_symbols
))
3495 Lisp_Object sym
= XCAR (color_symbols
);
3497 || !STRINGP (XCAR (sym
))
3498 || !STRINGP (XCDR (sym
)))
3500 color_symbols
= XCDR (color_symbols
);
3503 return NILP (color_symbols
);
3507 /* Value is non-zero if OBJECT is a valid XPM image specification. */
3510 xpm_image_p (object
)
3513 struct image_keyword fmt
[XPM_LAST
];
3514 bcopy (xpm_format
, fmt
, sizeof fmt
);
3515 return (parse_image_spec (object
, fmt
, XPM_LAST
, Qxpm
)
3516 /* Either `:file' or `:data' must be present. */
3517 && fmt
[XPM_FILE
].count
+ fmt
[XPM_DATA
].count
== 1
3518 /* Either no `:color-symbols' or it's a list of conses
3519 whose car and cdr are strings. */
3520 && (fmt
[XPM_COLOR_SYMBOLS
].count
== 0
3521 || xpm_valid_color_symbols_p (fmt
[XPM_COLOR_SYMBOLS
].value
)));
3525 /* Load image IMG which will be displayed on frame F. Value is
3526 non-zero if successful. */
3534 XpmAttributes attrs
;
3535 Lisp_Object specified_file
, color_symbols
;
3538 xpm_XImage
* xpm_image
= NULL
, * xpm_mask
= NULL
;
3539 #endif /* HAVE_NTGUI */
3541 /* Configure the XPM lib. Use the visual of frame F. Allocate
3542 close colors. Return colors allocated. */
3543 bzero (&attrs
, sizeof attrs
);
3546 attrs
.visual
= FRAME_X_VISUAL (f
);
3547 attrs
.colormap
= FRAME_X_COLORMAP (f
);
3548 attrs
.valuemask
|= XpmVisual
;
3549 attrs
.valuemask
|= XpmColormap
;
3550 #endif /* HAVE_NTGUI */
3552 #ifdef ALLOC_XPM_COLORS
3553 /* Allocate colors with our own functions which handle
3554 failing color allocation more gracefully. */
3555 attrs
.color_closure
= f
;
3556 attrs
.alloc_color
= xpm_alloc_color
;
3557 attrs
.free_colors
= xpm_free_colors
;
3558 attrs
.valuemask
|= XpmAllocColor
| XpmFreeColors
| XpmColorClosure
;
3559 #else /* not ALLOC_XPM_COLORS */
3560 /* Let the XPM lib allocate colors. */
3561 attrs
.valuemask
|= XpmReturnAllocPixels
;
3562 #ifdef XpmAllocCloseColors
3563 attrs
.alloc_close_colors
= 1;
3564 attrs
.valuemask
|= XpmAllocCloseColors
;
3565 #else /* not XpmAllocCloseColors */
3566 attrs
.closeness
= 600;
3567 attrs
.valuemask
|= XpmCloseness
;
3568 #endif /* not XpmAllocCloseColors */
3569 #endif /* ALLOC_XPM_COLORS */
3571 /* If image specification contains symbolic color definitions, add
3572 these to `attrs'. */
3573 color_symbols
= image_spec_value (img
->spec
, QCcolor_symbols
, NULL
);
3574 if (CONSP (color_symbols
))
3577 XpmColorSymbol
*xpm_syms
;
3580 attrs
.valuemask
|= XpmColorSymbols
;
3582 /* Count number of symbols. */
3583 attrs
.numsymbols
= 0;
3584 for (tail
= color_symbols
; CONSP (tail
); tail
= XCDR (tail
))
3587 /* Allocate an XpmColorSymbol array. */
3588 size
= attrs
.numsymbols
* sizeof *xpm_syms
;
3589 xpm_syms
= (XpmColorSymbol
*) alloca (size
);
3590 bzero (xpm_syms
, size
);
3591 attrs
.colorsymbols
= xpm_syms
;
3593 /* Fill the color symbol array. */
3594 for (tail
= color_symbols
, i
= 0;
3596 ++i
, tail
= XCDR (tail
))
3598 Lisp_Object name
= XCAR (XCAR (tail
));
3599 Lisp_Object color
= XCDR (XCAR (tail
));
3600 xpm_syms
[i
].name
= (char *) alloca (SCHARS (name
) + 1);
3601 strcpy (xpm_syms
[i
].name
, SDATA (name
));
3602 xpm_syms
[i
].value
= (char *) alloca (SCHARS (color
) + 1);
3603 strcpy (xpm_syms
[i
].value
, SDATA (color
));
3607 /* Create a pixmap for the image, either from a file, or from a
3608 string buffer containing data in the same format as an XPM file. */
3609 #ifdef ALLOC_XPM_COLORS
3610 xpm_init_color_cache (f
, &attrs
);
3613 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
3617 HDC frame_dc
= get_frame_dc (f
);
3618 hdc
= CreateCompatibleDC (frame_dc
);
3619 release_frame_dc (f
, frame_dc
);
3621 #endif /* HAVE_NTGUI */
3623 if (STRINGP (specified_file
))
3625 Lisp_Object file
= x_find_image_file (specified_file
);
3626 if (!STRINGP (file
))
3628 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
3633 /* XpmReadFileToPixmap is not available in the Windows port of
3634 libxpm. But XpmReadFileToImage almost does what we want. */
3635 rc
= fn_XpmReadFileToImage (&hdc
, SDATA (file
),
3636 &xpm_image
, &xpm_mask
,
3639 rc
= XpmReadFileToPixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3640 SDATA (file
), &img
->pixmap
, &img
->mask
,
3642 #endif /* HAVE_NTGUI */
3646 Lisp_Object buffer
= image_spec_value (img
->spec
, QCdata
, NULL
);
3648 /* XpmCreatePixmapFromBuffer is not available in the Windows port
3649 of libxpm. But XpmCreateImageFromBuffer almost does what we want. */
3650 rc
= fn_XpmCreateImageFromBuffer (&hdc
, SDATA (buffer
),
3651 &xpm_image
, &xpm_mask
,
3654 rc
= XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
3656 &img
->pixmap
, &img
->mask
,
3658 #endif /* HAVE_NTGUI */
3661 if (rc
== XpmSuccess
)
3663 #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS)
3664 img
->colors
= colors_in_color_table (&img
->ncolors
);
3665 #else /* not ALLOC_XPM_COLORS */
3669 /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap,
3670 plus some duplicate attributes. */
3671 if (xpm_image
&& xpm_image
->bitmap
)
3673 img
->pixmap
= xpm_image
->bitmap
;
3674 /* XImageFree in libXpm frees XImage struct without destroying
3675 the bitmap, which is what we want. */
3676 fn_XImageFree (xpm_image
);
3678 if (xpm_mask
&& xpm_mask
->bitmap
)
3680 /* The mask appears to be inverted compared with what we expect.
3681 TODO: invert our expectations. See other places where we
3682 have to invert bits because our idea of masks is backwards. */
3684 old_obj
= SelectObject (hdc
, xpm_mask
->bitmap
);
3686 PatBlt (hdc
, 0, 0, xpm_mask
->width
, xpm_mask
->height
, DSTINVERT
);
3687 SelectObject (hdc
, old_obj
);
3689 img
->mask
= xpm_mask
->bitmap
;
3690 fn_XImageFree (xpm_mask
);
3695 #endif /* HAVE_NTGUI */
3697 /* Remember allocated colors. */
3698 img
->ncolors
= attrs
.nalloc_pixels
;
3699 img
->colors
= (unsigned long *) xmalloc (img
->ncolors
3700 * sizeof *img
->colors
);
3701 for (i
= 0; i
< attrs
.nalloc_pixels
; ++i
)
3703 img
->colors
[i
] = attrs
.alloc_pixels
[i
];
3704 #ifdef DEBUG_X_COLORS
3705 register_color (img
->colors
[i
]);
3708 #endif /* not ALLOC_XPM_COLORS */
3710 img
->width
= attrs
.width
;
3711 img
->height
= attrs
.height
;
3712 xassert (img
->width
> 0 && img
->height
> 0);
3714 /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
3716 fn_XpmFreeAttributes (&attrs
);
3718 XpmFreeAttributes (&attrs
);
3719 #endif /* HAVE_NTGUI */
3725 #endif /* HAVE_NTGUI */
3730 image_error ("Error opening XPM file (%s)", img
->spec
, Qnil
);
3733 case XpmFileInvalid
:
3734 image_error ("Invalid XPM file (%s)", img
->spec
, Qnil
);
3738 image_error ("Out of memory (%s)", img
->spec
, Qnil
);
3741 case XpmColorFailed
:
3742 image_error ("Color allocation error (%s)", img
->spec
, Qnil
);
3746 image_error ("Unknown error (%s)", img
->spec
, Qnil
);
3751 #ifdef ALLOC_XPM_COLORS
3752 xpm_free_color_cache ();
3754 return rc
== XpmSuccess
;
3757 #endif /* HAVE_XPM */
3760 /***********************************************************************
3762 ***********************************************************************/
3764 #ifdef COLOR_TABLE_SUPPORT
3766 /* An entry in the color table mapping an RGB color to a pixel color. */
3771 unsigned long pixel
;
3773 /* Next in color table collision list. */
3774 struct ct_color
*next
;
3777 /* The bucket vector size to use. Must be prime. */
3781 /* Value is a hash of the RGB color given by R, G, and B. */
3783 #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
3785 /* The color hash table. */
3787 struct ct_color
**ct_table
;
3789 /* Number of entries in the color table. */
3791 int ct_colors_allocated
;
3793 /* Initialize the color table. */
3798 int size
= CT_SIZE
* sizeof (*ct_table
);
3799 ct_table
= (struct ct_color
**) xmalloc (size
);
3800 bzero (ct_table
, size
);
3801 ct_colors_allocated
= 0;
3805 /* Free memory associated with the color table. */
3811 struct ct_color
*p
, *next
;
3813 for (i
= 0; i
< CT_SIZE
; ++i
)
3814 for (p
= ct_table
[i
]; p
; p
= next
)
3825 /* Value is a pixel color for RGB color R, G, B on frame F. If an
3826 entry for that color already is in the color table, return the
3827 pixel color of that entry. Otherwise, allocate a new color for R,
3828 G, B, and make an entry in the color table. */
3830 static unsigned long
3831 lookup_rgb_color (f
, r
, g
, b
)
3835 unsigned hash
= CT_HASH_RGB (r
, g
, b
);
3836 int i
= hash
% CT_SIZE
;
3838 Display_Info
*dpyinfo
;
3840 /* Handle TrueColor visuals specially, which improves performance by
3841 two orders of magnitude. Freeing colors on TrueColor visuals is
3842 a nop, and pixel colors specify RGB values directly. See also
3843 the Xlib spec, chapter 3.1. */
3844 dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
3845 if (dpyinfo
->red_bits
> 0)
3847 unsigned long pr
, pg
, pb
;
3849 /* Apply gamma-correction like normal color allocation does. */
3853 color
.red
= r
, color
.green
= g
, color
.blue
= b
;
3854 gamma_correct (f
, &color
);
3855 r
= color
.red
, g
= color
.green
, b
= color
.blue
;
3858 /* Scale down RGB values to the visual's bits per RGB, and shift
3859 them to the right position in the pixel color. Note that the
3860 original RGB values are 16-bit values, as usual in X. */
3861 pr
= (r
>> (16 - dpyinfo
->red_bits
)) << dpyinfo
->red_offset
;
3862 pg
= (g
>> (16 - dpyinfo
->green_bits
)) << dpyinfo
->green_offset
;
3863 pb
= (b
>> (16 - dpyinfo
->blue_bits
)) << dpyinfo
->blue_offset
;
3865 /* Assemble the pixel color. */
3866 return pr
| pg
| pb
;
3869 for (p
= ct_table
[i
]; p
; p
= p
->next
)
3870 if (p
->r
== r
&& p
->g
== g
&& p
->b
== b
)
3876 #ifdef HAVE_X_WINDOWS
3885 cmap
= FRAME_X_COLORMAP (f
);
3886 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
3889 ++ct_colors_allocated
;
3890 p
= (struct ct_color
*) xmalloc (sizeof *p
);
3894 p
->pixel
= color
.pixel
;
3895 p
->next
= ct_table
[i
];
3899 return FRAME_FOREGROUND_PIXEL (f
);
3904 color
= PALETTERGB (r
, g
, b
);
3906 color
= RGB_TO_ULONG (r
, g
, b
);
3907 #endif /* HAVE_NTGUI */
3908 ++ct_colors_allocated
;
3909 p
= (struct ct_color
*) xmalloc (sizeof *p
);
3914 p
->next
= ct_table
[i
];
3916 #endif /* HAVE_X_WINDOWS */
3924 /* Look up pixel color PIXEL which is used on frame F in the color
3925 table. If not already present, allocate it. Value is PIXEL. */
3927 static unsigned long
3928 lookup_pixel_color (f
, pixel
)
3930 unsigned long pixel
;
3932 int i
= pixel
% CT_SIZE
;
3935 for (p
= ct_table
[i
]; p
; p
= p
->next
)
3936 if (p
->pixel
== pixel
)
3945 #ifdef HAVE_X_WINDOWS
3946 cmap
= FRAME_X_COLORMAP (f
);
3947 color
.pixel
= pixel
;
3948 x_query_color (f
, &color
);
3949 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
3952 cmap
= DefaultColormapOfScreen (FRAME_X_SCREEN (f
));
3953 color
.pixel
= pixel
;
3954 XQueryColor (NULL
, cmap
, &color
);
3955 rc
= x_alloc_nearest_color (f
, cmap
, &color
);
3957 #endif /* HAVE_X_WINDOWS */
3961 ++ct_colors_allocated
;
3963 p
= (struct ct_color
*) xmalloc (sizeof *p
);
3968 p
->next
= ct_table
[i
];
3972 return FRAME_FOREGROUND_PIXEL (f
);
3978 /* Value is a vector of all pixel colors contained in the color table,
3979 allocated via xmalloc. Set *N to the number of colors. */
3981 static unsigned long *
3982 colors_in_color_table (n
)
3987 unsigned long *colors
;
3989 if (ct_colors_allocated
== 0)
3996 colors
= (unsigned long *) xmalloc (ct_colors_allocated
3998 *n
= ct_colors_allocated
;
4000 for (i
= j
= 0; i
< CT_SIZE
; ++i
)
4001 for (p
= ct_table
[i
]; p
; p
= p
->next
)
4002 colors
[j
++] = p
->pixel
;
4008 #else /* COLOR_TABLE_SUPPORT */
4010 static unsigned long
4011 lookup_rgb_color (f
, r
, g
, b
)
4015 unsigned long pixel
;
4018 pixel
= RGB_TO_ULONG (r
>> 8, g
>> 8, b
>> 8);
4019 gamma_correct (f
, &pixel
);
4023 pixel
= PALETTERGB (r
>> 8, g
>> 8, b
>> 8);
4024 #endif /* HAVE_NTGUI */
4033 #endif /* COLOR_TABLE_SUPPORT */
4036 /***********************************************************************
4038 ***********************************************************************/
4040 static XColor
*x_to_xcolors
P_ ((struct frame
*, struct image
*, int));
4041 static void x_from_xcolors
P_ ((struct frame
*, struct image
*, XColor
*));
4042 static void x_detect_edges
P_ ((struct frame
*, struct image
*, int[9], int));
4045 static void XPutPixel (XImagePtr
, int, int, COLORREF
);
4046 #endif /* HAVE_NTGUI */
4048 /* Non-zero means draw a cross on images having `:conversion
4051 int cross_disabled_images
;
4053 /* Edge detection matrices for different edge-detection
4056 static int emboss_matrix
[9] = {
4058 2, -1, 0, /* y - 1 */
4060 0, 1, -2 /* y + 1 */
4063 static int laplace_matrix
[9] = {
4065 1, 0, 0, /* y - 1 */
4067 0, 0, -1 /* y + 1 */
4070 /* Value is the intensity of the color whose red/green/blue values
4073 #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
4076 /* On frame F, return an array of XColor structures describing image
4077 IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
4078 non-zero means also fill the red/green/blue members of the XColor
4079 structures. Value is a pointer to the array of XColors structures,
4080 allocated with xmalloc; it must be freed by the caller. */
4083 x_to_xcolors (f
, img
, rgb_p
)
4090 XImagePtr_or_DC ximg
;
4094 #endif /* HAVE_NTGUI */
4096 colors
= (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *colors
);
4099 /* Get the X image IMG->pixmap. */
4100 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
4101 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
4103 /* Load the image into a memory device context. */
4104 hdc
= get_frame_dc (f
);
4105 ximg
= CreateCompatibleDC (hdc
);
4106 release_frame_dc (f
, hdc
);
4107 prev
= SelectObject (ximg
, img
->pixmap
);
4108 #endif /* HAVE_NTGUI */
4110 /* Fill the `pixel' members of the XColor array. I wished there
4111 were an easy and portable way to circumvent XGetPixel. */
4113 for (y
= 0; y
< img
->height
; ++y
)
4117 #ifdef HAVE_X_WINDOWS
4118 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4119 p
->pixel
= XGetPixel (ximg
, x
, y
);
4121 x_query_colors (f
, row
, img
->width
);
4125 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4127 /* W32_TODO: palette support needed here? */
4128 p
->pixel
= GET_PIXEL (ximg
, x
, y
);
4132 p
->red
= RED16_FROM_ULONG (p
->pixel
);
4133 p
->green
= GREEN16_FROM_ULONG (p
->pixel
);
4134 p
->blue
= BLUE16_FROM_ULONG (p
->pixel
);
4137 p
->red
= 256 * GetRValue (p
->pixel
);
4138 p
->green
= 256 * GetGValue (p
->pixel
);
4139 p
->blue
= 256 * GetBValue (p
->pixel
);
4140 #endif /* HAVE_NTGUI */
4143 #endif /* HAVE_X_WINDOWS */
4146 Destroy_Image (ximg
, prev
);
4153 /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been
4154 created with CreateDIBSection, with the pointer to the bit values
4155 stored in ximg->data. */
4157 static void XPutPixel (ximg
, x
, y
, color
)
4162 int width
= ximg
->info
.bmiHeader
.biWidth
;
4163 int height
= ximg
->info
.bmiHeader
.biHeight
;
4164 unsigned char * pixel
;
4166 /* True color images. */
4167 if (ximg
->info
.bmiHeader
.biBitCount
== 24)
4169 int rowbytes
= width
* 3;
4170 /* Ensure scanlines are aligned on 4 byte boundaries. */
4172 rowbytes
+= 4 - (rowbytes
% 4);
4174 pixel
= ximg
->data
+ y
* rowbytes
+ x
* 3;
4175 /* Windows bitmaps are in BGR order. */
4176 *pixel
= GetBValue (color
);
4177 *(pixel
+ 1) = GetGValue (color
);
4178 *(pixel
+ 2) = GetRValue (color
);
4180 /* Monochrome images. */
4181 else if (ximg
->info
.bmiHeader
.biBitCount
== 1)
4183 int rowbytes
= width
/ 8;
4184 /* Ensure scanlines are aligned on 4 byte boundaries. */
4186 rowbytes
+= 4 - (rowbytes
% 4);
4187 pixel
= ximg
->data
+ y
* rowbytes
+ x
/ 8;
4188 /* Filter out palette info. */
4189 if (color
& 0x00ffffff)
4190 *pixel
= *pixel
| (1 << x
% 8);
4192 *pixel
= *pixel
& ~(1 << x
% 8);
4195 image_error ("XPutPixel: palette image not supported", Qnil
, Qnil
);
4198 #endif /* HAVE_NTGUI */
4200 /* Create IMG->pixmap from an array COLORS of XColor structures, whose
4201 RGB members are set. F is the frame on which this all happens.
4202 COLORS will be freed; an existing IMG->pixmap will be freed, too. */
4205 x_from_xcolors (f
, img
, colors
)
4215 init_color_table ();
4217 x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 0,
4220 for (y
= 0; y
< img
->height
; ++y
)
4221 for (x
= 0; x
< img
->width
; ++x
, ++p
)
4223 unsigned long pixel
;
4224 pixel
= lookup_rgb_color (f
, p
->red
, p
->green
, p
->blue
);
4225 XPutPixel (oimg
, x
, y
, pixel
);
4229 x_clear_image_1 (f
, img
, 1, 0, 1);
4231 x_put_x_image (f
, oimg
, pixmap
, img
->width
, img
->height
);
4232 x_destroy_x_image (oimg
);
4233 img
->pixmap
= pixmap
;
4234 #ifdef COLOR_TABLE_SUPPORT
4235 img
->colors
= colors_in_color_table (&img
->ncolors
);
4236 free_color_table ();
4237 #endif /* COLOR_TABLE_SUPPORT */
4241 /* On frame F, perform edge-detection on image IMG.
4243 MATRIX is a nine-element array specifying the transformation
4244 matrix. See emboss_matrix for an example.
4246 COLOR_ADJUST is a color adjustment added to each pixel of the
4250 x_detect_edges (f
, img
, matrix
, color_adjust
)
4253 int matrix
[9], color_adjust
;
4255 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4259 for (i
= sum
= 0; i
< 9; ++i
)
4260 sum
+= abs (matrix
[i
]);
4262 #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
4264 new = (XColor
*) xmalloc (img
->width
* img
->height
* sizeof *new);
4266 for (y
= 0; y
< img
->height
; ++y
)
4268 p
= COLOR (new, 0, y
);
4269 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4270 p
= COLOR (new, img
->width
- 1, y
);
4271 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4274 for (x
= 1; x
< img
->width
- 1; ++x
)
4276 p
= COLOR (new, x
, 0);
4277 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4278 p
= COLOR (new, x
, img
->height
- 1);
4279 p
->red
= p
->green
= p
->blue
= 0xffff/2;
4282 for (y
= 1; y
< img
->height
- 1; ++y
)
4284 p
= COLOR (new, 1, y
);
4286 for (x
= 1; x
< img
->width
- 1; ++x
, ++p
)
4288 int r
, g
, b
, y1
, x1
;
4291 for (y1
= y
- 1; y1
< y
+ 2; ++y1
)
4292 for (x1
= x
- 1; x1
< x
+ 2; ++x1
, ++i
)
4295 XColor
*t
= COLOR (colors
, x1
, y1
);
4296 r
+= matrix
[i
] * t
->red
;
4297 g
+= matrix
[i
] * t
->green
;
4298 b
+= matrix
[i
] * t
->blue
;
4301 r
= (r
/ sum
+ color_adjust
) & 0xffff;
4302 g
= (g
/ sum
+ color_adjust
) & 0xffff;
4303 b
= (b
/ sum
+ color_adjust
) & 0xffff;
4304 p
->red
= p
->green
= p
->blue
= COLOR_INTENSITY (r
, g
, b
);
4309 x_from_xcolors (f
, img
, new);
4315 /* Perform the pre-defined `emboss' edge-detection on image IMG
4323 x_detect_edges (f
, img
, emboss_matrix
, 0xffff / 2);
4327 /* Transform image IMG which is used on frame F with a Laplace
4328 edge-detection algorithm. The result is an image that can be used
4329 to draw disabled buttons, for example. */
4336 x_detect_edges (f
, img
, laplace_matrix
, 45000);
4340 /* Perform edge-detection on image IMG on frame F, with specified
4341 transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
4343 MATRIX must be either
4345 - a list of at least 9 numbers in row-major form
4346 - a vector of at least 9 numbers
4348 COLOR_ADJUST nil means use a default; otherwise it must be a
4352 x_edge_detection (f
, img
, matrix
, color_adjust
)
4355 Lisp_Object matrix
, color_adjust
;
4363 i
< 9 && CONSP (matrix
) && NUMBERP (XCAR (matrix
));
4364 ++i
, matrix
= XCDR (matrix
))
4365 trans
[i
] = XFLOATINT (XCAR (matrix
));
4367 else if (VECTORP (matrix
) && ASIZE (matrix
) >= 9)
4369 for (i
= 0; i
< 9 && NUMBERP (AREF (matrix
, i
)); ++i
)
4370 trans
[i
] = XFLOATINT (AREF (matrix
, i
));
4373 if (NILP (color_adjust
))
4374 color_adjust
= make_number (0xffff / 2);
4376 if (i
== 9 && NUMBERP (color_adjust
))
4377 x_detect_edges (f
, img
, trans
, (int) XFLOATINT (color_adjust
));
4381 /* Transform image IMG on frame F so that it looks disabled. */
4384 x_disable_image (f
, img
)
4388 Display_Info
*dpyinfo
= FRAME_X_DISPLAY_INFO (f
);
4390 int n_planes
= dpyinfo
->n_planes
* dpyinfo
->n_cbits
;
4392 int n_planes
= dpyinfo
->n_planes
;
4393 #endif /* HAVE_NTGUI */
4397 /* Color (or grayscale). Convert to gray, and equalize. Just
4398 drawing such images with a stipple can look very odd, so
4399 we're using this method instead. */
4400 XColor
*colors
= x_to_xcolors (f
, img
, 1);
4402 const int h
= 15000;
4403 const int l
= 30000;
4405 for (p
= colors
, end
= colors
+ img
->width
* img
->height
;
4409 int i
= COLOR_INTENSITY (p
->red
, p
->green
, p
->blue
);
4410 int i2
= (0xffff - h
- l
) * i
/ 0xffff + l
;
4411 p
->red
= p
->green
= p
->blue
= i2
;
4414 x_from_xcolors (f
, img
, colors
);
4417 /* Draw a cross over the disabled image, if we must or if we
4419 if (n_planes
< 2 || cross_disabled_images
)
4422 Display
*dpy
= FRAME_X_DISPLAY (f
);
4426 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, NULL, 0, NULL)
4427 #define MaskForeground(f) PIX_MASK_DRAW (f)
4429 #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, pixmap, 0, NULL)
4430 #define MaskForeground(f) WHITE_PIX_DEFAULT (f)
4433 gc
= XCreateGC_pixmap (dpy
, img
->pixmap
);
4434 XSetForeground (dpy
, gc
, BLACK_PIX_DEFAULT (f
));
4435 XDrawLine (dpy
, img
->pixmap
, gc
, 0, 0,
4436 img
->width
- 1, img
->height
- 1);
4437 XDrawLine (dpy
, img
->pixmap
, gc
, 0, img
->height
- 1,
4443 gc
= XCreateGC_pixmap (dpy
, img
->mask
);
4444 XSetForeground (dpy
, gc
, MaskForeground (f
));
4445 XDrawLine (dpy
, img
->mask
, gc
, 0, 0,
4446 img
->width
- 1, img
->height
- 1);
4447 XDrawLine (dpy
, img
->mask
, gc
, 0, img
->height
- 1,
4455 hdc
= get_frame_dc (f
);
4456 bmpdc
= CreateCompatibleDC (hdc
);
4457 release_frame_dc (f
, hdc
);
4459 prev
= SelectObject (bmpdc
, img
->pixmap
);
4461 SetTextColor (bmpdc
, BLACK_PIX_DEFAULT (f
));
4462 MoveToEx (bmpdc
, 0, 0, NULL
);
4463 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4464 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4465 LineTo (bmpdc
, img
->width
- 1, 0);
4469 SelectObject (bmpdc
, img
->mask
);
4470 SetTextColor (bmpdc
, WHITE_PIX_DEFAULT (f
));
4471 MoveToEx (bmpdc
, 0, 0, NULL
);
4472 LineTo (bmpdc
, img
->width
- 1, img
->height
- 1);
4473 MoveToEx (bmpdc
, 0, img
->height
- 1, NULL
);
4474 LineTo (bmpdc
, img
->width
- 1, 0);
4476 SelectObject (bmpdc
, prev
);
4478 #endif /* HAVE_NTGUI */
4483 /* Build a mask for image IMG which is used on frame F. FILE is the
4484 name of an image file, for error messages. HOW determines how to
4485 determine the background color of IMG. If it is a list '(R G B)',
4486 with R, G, and B being integers >= 0, take that as the color of the
4487 background. Otherwise, determine the background color of IMG
4488 heuristically. Value is non-zero if successful. */
4491 x_build_heuristic_mask (f
, img
, how
)
4496 XImagePtr_or_DC ximg
;
4504 #endif /* HAVE_NTGUI */
4505 int x
, y
, rc
, use_img_background
;
4506 unsigned long bg
= 0;
4510 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->mask
);
4511 img
->mask
= NO_PIXMAP
;
4512 img
->background_transparent_valid
= 0;
4516 /* Create an image and pixmap serving as mask. */
4517 rc
= x_create_x_image_and_pixmap (f
, img
->width
, img
->height
, 1,
4518 &mask_img
, &img
->mask
);
4522 /* Get the X image of IMG->pixmap. */
4523 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
, 0, 0,
4524 img
->width
, img
->height
,
4527 /* Create the bit array serving as mask. */
4528 row_width
= (img
->width
+ 7) / 8;
4529 mask_img
= xmalloc (row_width
* img
->height
);
4530 bzero (mask_img
, row_width
* img
->height
);
4532 /* Create a memory device context for IMG->pixmap. */
4533 frame_dc
= get_frame_dc (f
);
4534 ximg
= CreateCompatibleDC (frame_dc
);
4535 release_frame_dc (f
, frame_dc
);
4536 prev
= SelectObject (ximg
, img
->pixmap
);
4537 #endif /* HAVE_NTGUI */
4539 /* Determine the background color of ximg. If HOW is `(R G B)'
4540 take that as color. Otherwise, use the image's background color. */
4541 use_img_background
= 1;
4547 for (i
= 0; i
< 3 && CONSP (how
) && NATNUMP (XCAR (how
)); ++i
)
4549 rgb
[i
] = XFASTINT (XCAR (how
)) & 0xffff;
4553 if (i
== 3 && NILP (how
))
4555 char color_name
[30];
4556 sprintf (color_name
, "#%04x%04x%04x", rgb
[0], rgb
[1], rgb
[2]);
4559 0x00ffffff & /* Filter out palette info. */
4560 #endif /* HAVE_NTGUI */
4561 x_alloc_image_color (f
, img
, build_string (color_name
), 0));
4562 use_img_background
= 0;
4566 if (use_img_background
)
4567 bg
= four_corners_best (ximg
, img
->width
, img
->height
);
4569 /* Set all bits in mask_img to 1 whose color in ximg is different
4570 from the background color bg. */
4572 for (y
= 0; y
< img
->height
; ++y
)
4573 for (x
= 0; x
< img
->width
; ++x
)
4574 XPutPixel (mask_img
, x
, y
, (XGetPixel (ximg
, x
, y
) != bg
4575 ? PIX_MASK_DRAW (f
) : PIX_MASK_RETAIN (f
)));
4577 /* Fill in the background_transparent field while we have the mask handy. */
4578 image_background_transparent (img
, f
, mask_img
);
4580 /* Put mask_img into img->mask. */
4581 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
4582 x_destroy_x_image (mask_img
);
4585 for (y
= 0; y
< img
->height
; ++y
)
4586 for (x
= 0; x
< img
->width
; ++x
)
4588 COLORREF p
= GetPixel (ximg
, x
, y
);
4590 mask_img
[y
* row_width
+ x
/ 8] |= 1 << (x
% 8);
4593 /* Create the mask image. */
4594 img
->mask
= w32_create_pixmap_from_bitmap_data (img
->width
, img
->height
,
4596 /* Fill in the background_transparent field while we have the mask handy. */
4597 SelectObject (ximg
, img
->mask
);
4598 image_background_transparent (img
, f
, ximg
);
4600 /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */
4602 #endif /* HAVE_NTGUI */
4604 Destroy_Image (ximg
, prev
);
4610 /***********************************************************************
4611 PBM (mono, gray, color)
4612 ***********************************************************************/
4614 static int pbm_image_p
P_ ((Lisp_Object object
));
4615 static int pbm_load
P_ ((struct frame
*f
, struct image
*img
));
4616 static int pbm_scan_number
P_ ((unsigned char **, unsigned char *));
4618 /* The symbol `pbm' identifying images of this type. */
4622 /* Indices of image specification fields in gs_format, below. */
4624 enum pbm_keyword_index
4640 /* Vector of image_keyword structures describing the format
4641 of valid user-defined image specifications. */
4643 static struct image_keyword pbm_format
[PBM_LAST
] =
4645 {":type", IMAGE_SYMBOL_VALUE
, 1},
4646 {":file", IMAGE_STRING_VALUE
, 0},
4647 {":data", IMAGE_STRING_VALUE
, 0},
4648 {":ascent", IMAGE_ASCENT_VALUE
, 0},
4649 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
4650 {":relief", IMAGE_INTEGER_VALUE
, 0},
4651 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4652 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4653 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
4654 {":foreground", IMAGE_STRING_OR_NIL_VALUE
, 0},
4655 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
4658 /* Structure describing the image type `pbm'. */
4660 static struct image_type pbm_type
=
4670 /* Return non-zero if OBJECT is a valid PBM image specification. */
4673 pbm_image_p (object
)
4676 struct image_keyword fmt
[PBM_LAST
];
4678 bcopy (pbm_format
, fmt
, sizeof fmt
);
4680 if (!parse_image_spec (object
, fmt
, PBM_LAST
, Qpbm
))
4683 /* Must specify either :data or :file. */
4684 return fmt
[PBM_DATA
].count
+ fmt
[PBM_FILE
].count
== 1;
4688 /* Scan a decimal number from *S and return it. Advance *S while
4689 reading the number. END is the end of the string. Value is -1 at
4693 pbm_scan_number (s
, end
)
4694 unsigned char **s
, *end
;
4696 int c
= 0, val
= -1;
4700 /* Skip white-space. */
4701 while (*s
< end
&& (c
= *(*s
)++, isspace (c
)))
4706 /* Skip comment to end of line. */
4707 while (*s
< end
&& (c
= *(*s
)++, c
!= '\n'))
4710 else if (isdigit (c
))
4712 /* Read decimal number. */
4714 while (*s
< end
&& (c
= *(*s
)++, isdigit (c
)))
4715 val
= 10 * val
+ c
- '0';
4727 #if 0 /* Unused. ++kfs */
4729 /* Read FILE into memory. Value is a pointer to a buffer allocated
4730 with xmalloc holding FILE's contents. Value is null if an error
4731 occurred. *SIZE is set to the size of the file. */
4734 pbm_read_file (file
, size
)
4742 if (stat (SDATA (file
), &st
) == 0
4743 && (fp
= fopen (SDATA (file
), "rb")) != NULL
4744 && (buf
= (char *) xmalloc (st
.st_size
),
4745 fread (buf
, 1, st
.st_size
, fp
) == st
.st_size
))
4764 #endif /* HAVE_NTGUI */
4766 /* Load PBM image IMG for use on frame F. */
4774 int width
, height
, max_color_idx
= 0;
4776 Lisp_Object file
, specified_file
;
4777 enum {PBM_MONO
, PBM_GRAY
, PBM_COLOR
} type
;
4778 struct gcpro gcpro1
;
4779 unsigned char *contents
= NULL
;
4780 unsigned char *end
, *p
;
4783 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
4787 if (STRINGP (specified_file
))
4789 file
= x_find_image_file (specified_file
);
4790 if (!STRINGP (file
))
4792 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
4797 contents
= slurp_file (SDATA (file
), &size
);
4798 if (contents
== NULL
)
4800 image_error ("Error reading `%s'", file
, Qnil
);
4806 end
= contents
+ size
;
4811 data
= image_spec_value (img
->spec
, QCdata
, NULL
);
4813 end
= p
+ SBYTES (data
);
4816 /* Check magic number. */
4817 if (end
- p
< 2 || *p
++ != 'P')
4819 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
4829 raw_p
= 0, type
= PBM_MONO
;
4833 raw_p
= 0, type
= PBM_GRAY
;
4837 raw_p
= 0, type
= PBM_COLOR
;
4841 raw_p
= 1, type
= PBM_MONO
;
4845 raw_p
= 1, type
= PBM_GRAY
;
4849 raw_p
= 1, type
= PBM_COLOR
;
4853 image_error ("Not a PBM image: `%s'", img
->spec
, Qnil
);
4857 /* Read width, height, maximum color-component. Characters
4858 starting with `#' up to the end of a line are ignored. */
4859 width
= pbm_scan_number (&p
, end
);
4860 height
= pbm_scan_number (&p
, end
);
4862 if (type
!= PBM_MONO
)
4864 max_color_idx
= pbm_scan_number (&p
, end
);
4865 if (raw_p
&& max_color_idx
> 255)
4866 max_color_idx
= 255;
4871 || (type
!= PBM_MONO
&& max_color_idx
< 0))
4874 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0,
4875 &ximg
, &img
->pixmap
))
4878 /* Initialize the color hash table. */
4879 init_color_table ();
4881 if (type
== PBM_MONO
)
4884 struct image_keyword fmt
[PBM_LAST
];
4885 unsigned long fg
= FRAME_FOREGROUND_PIXEL (f
);
4886 unsigned long bg
= FRAME_BACKGROUND_PIXEL (f
);
4888 /* Parse the image specification. */
4889 bcopy (pbm_format
, fmt
, sizeof fmt
);
4890 parse_image_spec (img
->spec
, fmt
, PBM_LAST
, Qpbm
);
4892 /* Get foreground and background colors, maybe allocate colors. */
4893 if (fmt
[PBM_FOREGROUND
].count
4894 && STRINGP (fmt
[PBM_FOREGROUND
].value
))
4895 fg
= x_alloc_image_color (f
, img
, fmt
[PBM_FOREGROUND
].value
, fg
);
4896 if (fmt
[PBM_BACKGROUND
].count
4897 && STRINGP (fmt
[PBM_BACKGROUND
].value
))
4899 bg
= x_alloc_image_color (f
, img
, fmt
[PBM_BACKGROUND
].value
, bg
);
4900 img
->background
= bg
;
4901 img
->background_valid
= 1;
4904 for (y
= 0; y
< height
; ++y
)
4905 for (x
= 0; x
< width
; ++x
)
4915 g
= pbm_scan_number (&p
, end
);
4917 XPutPixel (ximg
, x
, y
, g
? fg
: bg
);
4922 for (y
= 0; y
< height
; ++y
)
4923 for (x
= 0; x
< width
; ++x
)
4927 if (type
== PBM_GRAY
)
4928 r
= g
= b
= raw_p
? *p
++ : pbm_scan_number (&p
, end
);
4937 r
= pbm_scan_number (&p
, end
);
4938 g
= pbm_scan_number (&p
, end
);
4939 b
= pbm_scan_number (&p
, end
);
4942 if (r
< 0 || g
< 0 || b
< 0)
4944 x_destroy_x_image (ximg
);
4945 image_error ("Invalid pixel value in image `%s'",
4950 /* RGB values are now in the range 0..max_color_idx.
4951 Scale this to the range 0..0xffff supported by X. */
4952 r
= (double) r
* 65535 / max_color_idx
;
4953 g
= (double) g
* 65535 / max_color_idx
;
4954 b
= (double) b
* 65535 / max_color_idx
;
4955 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
4959 #ifdef COLOR_TABLE_SUPPORT
4960 /* Store in IMG->colors the colors allocated for the image, and
4961 free the color table. */
4962 img
->colors
= colors_in_color_table (&img
->ncolors
);
4963 free_color_table ();
4964 #endif /* COLOR_TABLE_SUPPORT */
4967 img
->height
= height
;
4969 /* Maybe fill in the background field while we have ximg handy. */
4971 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
4972 IMAGE_BACKGROUND (img
, f
, ximg
);
4974 /* Put the image into a pixmap. */
4975 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
4976 x_destroy_x_image (ximg
);
4978 /* X and W32 versions did it here, MAC version above. ++kfs
4980 img->height = height; */
4988 /***********************************************************************
4990 ***********************************************************************/
4992 #if defined (HAVE_PNG) || defined (MAC_OS)
4994 /* Function prototypes. */
4996 static int png_image_p
P_ ((Lisp_Object object
));
4997 static int png_load
P_ ((struct frame
*f
, struct image
*img
));
4999 /* The symbol `png' identifying images of this type. */
5003 /* Indices of image specification fields in png_format, below. */
5005 enum png_keyword_index
5020 /* Vector of image_keyword structures describing the format
5021 of valid user-defined image specifications. */
5023 static struct image_keyword png_format
[PNG_LAST
] =
5025 {":type", IMAGE_SYMBOL_VALUE
, 1},
5026 {":data", IMAGE_STRING_VALUE
, 0},
5027 {":file", IMAGE_STRING_VALUE
, 0},
5028 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5029 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5030 {":relief", IMAGE_INTEGER_VALUE
, 0},
5031 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5032 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5033 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5034 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5037 /* Structure describing the image type `png'. */
5039 static struct image_type png_type
=
5048 /* Return non-zero if OBJECT is a valid PNG image specification. */
5051 png_image_p (object
)
5054 struct image_keyword fmt
[PNG_LAST
];
5055 bcopy (png_format
, fmt
, sizeof fmt
);
5057 if (!parse_image_spec (object
, fmt
, PNG_LAST
, Qpng
))
5060 /* Must specify either the :data or :file keyword. */
5061 return fmt
[PNG_FILE
].count
+ fmt
[PNG_DATA
].count
== 1;
5064 #endif /* HAVE_PNG || MAC_OS */
5069 #if defined HAVE_LIBPNG_PNG_H
5070 # include <libpng/png.h>
5076 /* PNG library details. */
5078 DEF_IMGLIB_FN (png_get_io_ptr
);
5079 DEF_IMGLIB_FN (png_check_sig
);
5080 DEF_IMGLIB_FN (png_create_read_struct
);
5081 DEF_IMGLIB_FN (png_create_info_struct
);
5082 DEF_IMGLIB_FN (png_destroy_read_struct
);
5083 DEF_IMGLIB_FN (png_set_read_fn
);
5084 DEF_IMGLIB_FN (png_init_io
);
5085 DEF_IMGLIB_FN (png_set_sig_bytes
);
5086 DEF_IMGLIB_FN (png_read_info
);
5087 DEF_IMGLIB_FN (png_get_IHDR
);
5088 DEF_IMGLIB_FN (png_get_valid
);
5089 DEF_IMGLIB_FN (png_set_strip_16
);
5090 DEF_IMGLIB_FN (png_set_expand
);
5091 DEF_IMGLIB_FN (png_set_gray_to_rgb
);
5092 DEF_IMGLIB_FN (png_set_background
);
5093 DEF_IMGLIB_FN (png_get_bKGD
);
5094 DEF_IMGLIB_FN (png_read_update_info
);
5095 DEF_IMGLIB_FN (png_get_channels
);
5096 DEF_IMGLIB_FN (png_get_rowbytes
);
5097 DEF_IMGLIB_FN (png_read_image
);
5098 DEF_IMGLIB_FN (png_read_end
);
5099 DEF_IMGLIB_FN (png_error
);
5102 init_png_functions (void)
5106 /* Ensure zlib is loaded. Try debug version first. */
5107 if (!LoadLibrary ("zlibd.dll")
5108 && !LoadLibrary ("zlib.dll"))
5111 /* Try loading libpng under probable names. */
5112 if (!(library
= LoadLibrary ("libpng13d.dll"))
5113 && !(library
= LoadLibrary ("libpng13.dll"))
5114 && !(library
= LoadLibrary ("libpng12d.dll"))
5115 && !(library
= LoadLibrary ("libpng12.dll"))
5116 && !(library
= LoadLibrary ("libpng.dll")))
5119 LOAD_IMGLIB_FN (library
, png_get_io_ptr
);
5120 LOAD_IMGLIB_FN (library
, png_check_sig
);
5121 LOAD_IMGLIB_FN (library
, png_create_read_struct
);
5122 LOAD_IMGLIB_FN (library
, png_create_info_struct
);
5123 LOAD_IMGLIB_FN (library
, png_destroy_read_struct
);
5124 LOAD_IMGLIB_FN (library
, png_set_read_fn
);
5125 LOAD_IMGLIB_FN (library
, png_init_io
);
5126 LOAD_IMGLIB_FN (library
, png_set_sig_bytes
);
5127 LOAD_IMGLIB_FN (library
, png_read_info
);
5128 LOAD_IMGLIB_FN (library
, png_get_IHDR
);
5129 LOAD_IMGLIB_FN (library
, png_get_valid
);
5130 LOAD_IMGLIB_FN (library
, png_set_strip_16
);
5131 LOAD_IMGLIB_FN (library
, png_set_expand
);
5132 LOAD_IMGLIB_FN (library
, png_set_gray_to_rgb
);
5133 LOAD_IMGLIB_FN (library
, png_set_background
);
5134 LOAD_IMGLIB_FN (library
, png_get_bKGD
);
5135 LOAD_IMGLIB_FN (library
, png_read_update_info
);
5136 LOAD_IMGLIB_FN (library
, png_get_channels
);
5137 LOAD_IMGLIB_FN (library
, png_get_rowbytes
);
5138 LOAD_IMGLIB_FN (library
, png_read_image
);
5139 LOAD_IMGLIB_FN (library
, png_read_end
);
5140 LOAD_IMGLIB_FN (library
, png_error
);
5145 #define fn_png_get_io_ptr png_get_io_ptr
5146 #define fn_png_check_sig png_check_sig
5147 #define fn_png_create_read_struct png_create_read_struct
5148 #define fn_png_create_info_struct png_create_info_struct
5149 #define fn_png_destroy_read_struct png_destroy_read_struct
5150 #define fn_png_set_read_fn png_set_read_fn
5151 #define fn_png_init_io png_init_io
5152 #define fn_png_set_sig_bytes png_set_sig_bytes
5153 #define fn_png_read_info png_read_info
5154 #define fn_png_get_IHDR png_get_IHDR
5155 #define fn_png_get_valid png_get_valid
5156 #define fn_png_set_strip_16 png_set_strip_16
5157 #define fn_png_set_expand png_set_expand
5158 #define fn_png_set_gray_to_rgb png_set_gray_to_rgb
5159 #define fn_png_set_background png_set_background
5160 #define fn_png_get_bKGD png_get_bKGD
5161 #define fn_png_read_update_info png_read_update_info
5162 #define fn_png_get_channels png_get_channels
5163 #define fn_png_get_rowbytes png_get_rowbytes
5164 #define fn_png_read_image png_read_image
5165 #define fn_png_read_end png_read_end
5166 #define fn_png_error png_error
5168 #endif /* HAVE_NTGUI */
5170 /* Error and warning handlers installed when the PNG library
5174 my_png_error (png_ptr
, msg
)
5175 png_struct
*png_ptr
;
5178 xassert (png_ptr
!= NULL
);
5179 image_error ("PNG error: %s", build_string (msg
), Qnil
);
5180 longjmp (png_ptr
->jmpbuf
, 1);
5185 my_png_warning (png_ptr
, msg
)
5186 png_struct
*png_ptr
;
5189 xassert (png_ptr
!= NULL
);
5190 image_error ("PNG warning: %s", build_string (msg
), Qnil
);
5193 /* Memory source for PNG decoding. */
5195 struct png_memory_storage
5197 unsigned char *bytes
; /* The data */
5198 size_t len
; /* How big is it? */
5199 int index
; /* Where are we? */
5203 /* Function set as reader function when reading PNG image from memory.
5204 PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
5205 bytes from the input to DATA. */
5208 png_read_from_memory (png_ptr
, data
, length
)
5209 png_structp png_ptr
;
5213 struct png_memory_storage
*tbr
5214 = (struct png_memory_storage
*) fn_png_get_io_ptr (png_ptr
);
5216 if (length
> tbr
->len
- tbr
->index
)
5217 fn_png_error (png_ptr
, "Read error");
5219 bcopy (tbr
->bytes
+ tbr
->index
, data
, length
);
5220 tbr
->index
= tbr
->index
+ length
;
5223 /* Load PNG image IMG for use on frame F. Value is non-zero if
5231 Lisp_Object file
, specified_file
;
5232 Lisp_Object specified_data
;
5234 XImagePtr ximg
, mask_img
= NULL
;
5235 struct gcpro gcpro1
;
5236 png_struct
*png_ptr
= NULL
;
5237 png_info
*info_ptr
= NULL
, *end_info
= NULL
;
5238 FILE *volatile fp
= NULL
;
5240 png_byte
* volatile pixels
= NULL
;
5241 png_byte
** volatile rows
= NULL
;
5242 png_uint_32 width
, height
;
5243 int bit_depth
, color_type
, interlace_type
;
5245 png_uint_32 row_bytes
;
5247 double screen_gamma
;
5248 struct png_memory_storage tbr
; /* Data to be read */
5250 /* Find out what file to load. */
5251 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5252 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5256 if (NILP (specified_data
))
5258 file
= x_find_image_file (specified_file
);
5259 if (!STRINGP (file
))
5261 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5266 /* Open the image file. */
5267 fp
= fopen (SDATA (file
), "rb");
5270 image_error ("Cannot open image file `%s'", file
, Qnil
);
5276 /* Check PNG signature. */
5277 if (fread (sig
, 1, sizeof sig
, fp
) != sizeof sig
5278 || !fn_png_check_sig (sig
, sizeof sig
))
5280 image_error ("Not a PNG file: `%s'", file
, Qnil
);
5288 /* Read from memory. */
5289 tbr
.bytes
= SDATA (specified_data
);
5290 tbr
.len
= SBYTES (specified_data
);
5293 /* Check PNG signature. */
5294 if (tbr
.len
< sizeof sig
5295 || !fn_png_check_sig (tbr
.bytes
, sizeof sig
))
5297 image_error ("Not a PNG image: `%s'", img
->spec
, Qnil
);
5302 /* Need to skip past the signature. */
5303 tbr
.bytes
+= sizeof (sig
);
5306 /* Initialize read and info structs for PNG lib. */
5307 png_ptr
= fn_png_create_read_struct (PNG_LIBPNG_VER_STRING
, NULL
,
5308 my_png_error
, my_png_warning
);
5311 if (fp
) fclose (fp
);
5316 info_ptr
= fn_png_create_info_struct (png_ptr
);
5319 fn_png_destroy_read_struct (&png_ptr
, NULL
, NULL
);
5320 if (fp
) fclose (fp
);
5325 end_info
= fn_png_create_info_struct (png_ptr
);
5328 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, NULL
);
5329 if (fp
) fclose (fp
);
5334 /* Set error jump-back. We come back here when the PNG library
5335 detects an error. */
5336 if (setjmp (png_ptr
->jmpbuf
))
5340 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5343 if (fp
) fclose (fp
);
5348 /* Read image info. */
5349 if (!NILP (specified_data
))
5350 fn_png_set_read_fn (png_ptr
, (void *) &tbr
, png_read_from_memory
);
5352 fn_png_init_io (png_ptr
, fp
);
5354 fn_png_set_sig_bytes (png_ptr
, sizeof sig
);
5355 fn_png_read_info (png_ptr
, info_ptr
);
5356 fn_png_get_IHDR (png_ptr
, info_ptr
, &width
, &height
, &bit_depth
, &color_type
,
5357 &interlace_type
, NULL
, NULL
);
5359 /* If image contains simply transparency data, we prefer to
5360 construct a clipping mask. */
5361 if (fn_png_get_valid (png_ptr
, info_ptr
, PNG_INFO_tRNS
))
5366 /* This function is easier to write if we only have to handle
5367 one data format: RGB or RGBA with 8 bits per channel. Let's
5368 transform other formats into that format. */
5370 /* Strip more than 8 bits per channel. */
5371 if (bit_depth
== 16)
5372 fn_png_set_strip_16 (png_ptr
);
5374 /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
5376 fn_png_set_expand (png_ptr
);
5378 /* Convert grayscale images to RGB. */
5379 if (color_type
== PNG_COLOR_TYPE_GRAY
5380 || color_type
== PNG_COLOR_TYPE_GRAY_ALPHA
)
5381 fn_png_set_gray_to_rgb (png_ptr
);
5383 screen_gamma
= (f
->gamma
? 1 / f
->gamma
/ 0.45455 : 2.2);
5385 #if 0 /* Avoid double gamma correction for PNG images. */
5386 { /* Tell the PNG lib to handle gamma correction for us. */
5389 #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
5390 if (png_get_sRGB (png_ptr
, info_ptr
, &intent
))
5391 /* The libpng documentation says this is right in this case. */
5392 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
5395 if (png_get_gAMA (png_ptr
, info_ptr
, &image_gamma
))
5396 /* Image contains gamma information. */
5397 png_set_gamma (png_ptr
, screen_gamma
, image_gamma
);
5399 /* Use the standard default for the image gamma. */
5400 png_set_gamma (png_ptr
, screen_gamma
, 0.45455);
5404 /* Handle alpha channel by combining the image with a background
5405 color. Do this only if a real alpha channel is supplied. For
5406 simple transparency, we prefer a clipping mask. */
5409 png_color_16
*image_bg
;
5410 Lisp_Object specified_bg
5411 = image_spec_value (img
->spec
, QCbackground
, NULL
);
5413 if (STRINGP (specified_bg
))
5414 /* The user specified `:background', use that. */
5416 /* W32 version incorrectly used COLORREF here!! ++kfs */
5418 if (x_defined_color (f
, SDATA (specified_bg
), &color
, 0))
5420 png_color_16 user_bg
;
5422 bzero (&user_bg
, sizeof user_bg
);
5423 user_bg
.red
= color
.red
>> PNG_BG_COLOR_SHIFT
;
5424 user_bg
.green
= color
.green
>> PNG_BG_COLOR_SHIFT
;
5425 user_bg
.blue
= color
.blue
>> PNG_BG_COLOR_SHIFT
;
5427 fn_png_set_background (png_ptr
, &user_bg
,
5428 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5431 else if (fn_png_get_bKGD (png_ptr
, info_ptr
, &image_bg
))
5432 /* Image contains a background color with which to
5433 combine the image. */
5434 fn_png_set_background (png_ptr
, image_bg
,
5435 PNG_BACKGROUND_GAMMA_FILE
, 1, 1.0);
5438 /* Image does not contain a background color with which
5439 to combine the image data via an alpha channel. Use
5440 the frame's background instead. */
5441 #ifdef HAVE_X_WINDOWS
5443 png_color_16 frame_background
;
5445 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
5446 x_query_color (f
, &color
);
5448 bzero (&frame_background
, sizeof frame_background
);
5449 frame_background
.red
= color
.red
;
5450 frame_background
.green
= color
.green
;
5451 frame_background
.blue
= color
.blue
;
5452 #endif /* HAVE_X_WINDOWS */
5456 png_color_16 frame_background
;
5457 color
= FRAME_BACKGROUND_PIXEL (f
);
5458 #if 0 /* W32 TODO : Colormap support. */
5459 x_query_color (f
, &color
);
5461 bzero (&frame_background
, sizeof frame_background
);
5462 frame_background
.red
= 256 * GetRValue (color
);
5463 frame_background
.green
= 256 * GetGValue (color
);
5464 frame_background
.blue
= 256 * GetBValue (color
);
5465 #endif /* HAVE_NTGUI */
5468 unsigned long color
;
5469 png_color_16 frame_background
;
5470 color
= FRAME_BACKGROUND_PIXEL (f
);
5471 #if 0 /* MAC/W32 TODO : Colormap support. */
5472 x_query_color (f
, &color
);
5474 bzero (&frame_background
, sizeof frame_background
);
5475 frame_background
.red
= RED_FROM_ULONG (color
);
5476 frame_background
.green
= GREEN_FROM_ULONG (color
);
5477 frame_background
.blue
= BLUE_FROM_ULONG (color
);
5480 fn_png_set_background (png_ptr
, &frame_background
,
5481 PNG_BACKGROUND_GAMMA_SCREEN
, 0, 1.0);
5485 /* Update info structure. */
5486 fn_png_read_update_info (png_ptr
, info_ptr
);
5488 /* Get number of channels. Valid values are 1 for grayscale images
5489 and images with a palette, 2 for grayscale images with transparency
5490 information (alpha channel), 3 for RGB images, and 4 for RGB
5491 images with alpha channel, i.e. RGBA. If conversions above were
5492 sufficient we should only have 3 or 4 channels here. */
5493 channels
= fn_png_get_channels (png_ptr
, info_ptr
);
5494 xassert (channels
== 3 || channels
== 4);
5496 /* Number of bytes needed for one row of the image. */
5497 row_bytes
= fn_png_get_rowbytes (png_ptr
, info_ptr
);
5499 /* Allocate memory for the image. */
5500 pixels
= (png_byte
*) xmalloc (row_bytes
* height
* sizeof *pixels
);
5501 rows
= (png_byte
**) xmalloc (height
* sizeof *rows
);
5502 for (i
= 0; i
< height
; ++i
)
5503 rows
[i
] = pixels
+ i
* row_bytes
;
5505 /* Read the entire image. */
5506 fn_png_read_image (png_ptr
, rows
);
5507 fn_png_read_end (png_ptr
, info_ptr
);
5514 /* Create the X image and pixmap. */
5515 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
,
5519 /* Create an image and pixmap serving as mask if the PNG image
5520 contains an alpha channel. */
5523 && !x_create_x_image_and_pixmap (f
, width
, height
, 1,
5524 &mask_img
, &img
->mask
))
5526 x_destroy_x_image (ximg
);
5527 Free_Pixmap (FRAME_X_DISPLAY (f
), img
->pixmap
);
5528 img
->pixmap
= NO_PIXMAP
;
5532 /* Fill the X image and mask from PNG data. */
5533 init_color_table ();
5535 for (y
= 0; y
< height
; ++y
)
5537 png_byte
*p
= rows
[y
];
5539 for (x
= 0; x
< width
; ++x
)
5546 XPutPixel (ximg
, x
, y
, lookup_rgb_color (f
, r
, g
, b
));
5547 /* An alpha channel, aka mask channel, associates variable
5548 transparency with an image. Where other image formats
5549 support binary transparency---fully transparent or fully
5550 opaque---PNG allows up to 254 levels of partial transparency.
5551 The PNG library implements partial transparency by combining
5552 the image with a specified background color.
5554 I'm not sure how to handle this here nicely: because the
5555 background on which the image is displayed may change, for
5556 real alpha channel support, it would be necessary to create
5557 a new image for each possible background.
5559 What I'm doing now is that a mask is created if we have
5560 boolean transparency information. Otherwise I'm using
5561 the frame's background color to combine the image with. */
5566 XPutPixel (mask_img
, x
, y
, *p
> 0 ? PIX_MASK_DRAW (f
) : PIX_MASK_RETAIN (f
));
5572 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
5573 /* Set IMG's background color from the PNG image, unless the user
5577 if (fn_png_get_bKGD (png_ptr
, info_ptr
, &bg
))
5579 img
->background
= lookup_rgb_color (f
, bg
->red
, bg
->green
, bg
->blue
);
5580 img
->background_valid
= 1;
5584 #ifdef COLOR_TABLE_SUPPORT
5585 /* Remember colors allocated for this image. */
5586 img
->colors
= colors_in_color_table (&img
->ncolors
);
5587 free_color_table ();
5588 #endif /* COLOR_TABLE_SUPPORT */
5591 fn_png_destroy_read_struct (&png_ptr
, &info_ptr
, &end_info
);
5596 img
->height
= height
;
5598 /* Maybe fill in the background field while we have ximg handy. */
5599 IMAGE_BACKGROUND (img
, f
, ximg
);
5601 /* Put the image into the pixmap, then free the X image and its buffer. */
5602 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
5603 x_destroy_x_image (ximg
);
5605 /* Same for the mask. */
5608 /* Fill in the background_transparent field while we have the mask
5610 image_background_transparent (img
, f
, mask_img
);
5612 x_put_x_image (f
, mask_img
, img
->mask
, img
->width
, img
->height
);
5613 x_destroy_x_image (mask_img
);
5620 #else /* HAVE_PNG */
5629 if (MyCGImageCreateWithPNGDataProvider
)
5630 return image_load_quartz2d (f
, img
, 1);
5633 return image_load_quicktime (f
, img
, kQTFileTypePNG
);
5637 #endif /* !HAVE_PNG */
5641 /***********************************************************************
5643 ***********************************************************************/
5645 #if defined (HAVE_JPEG) || defined (MAC_OS)
5647 static int jpeg_image_p
P_ ((Lisp_Object object
));
5648 static int jpeg_load
P_ ((struct frame
*f
, struct image
*img
));
5650 /* The symbol `jpeg' identifying images of this type. */
5654 /* Indices of image specification fields in gs_format, below. */
5656 enum jpeg_keyword_index
5665 JPEG_HEURISTIC_MASK
,
5671 /* Vector of image_keyword structures describing the format
5672 of valid user-defined image specifications. */
5674 static struct image_keyword jpeg_format
[JPEG_LAST
] =
5676 {":type", IMAGE_SYMBOL_VALUE
, 1},
5677 {":data", IMAGE_STRING_VALUE
, 0},
5678 {":file", IMAGE_STRING_VALUE
, 0},
5679 {":ascent", IMAGE_ASCENT_VALUE
, 0},
5680 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
5681 {":relief", IMAGE_INTEGER_VALUE
, 0},
5682 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5683 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5684 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
5685 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
5688 /* Structure describing the image type `jpeg'. */
5690 static struct image_type jpeg_type
=
5699 /* Return non-zero if OBJECT is a valid JPEG image specification. */
5702 jpeg_image_p (object
)
5705 struct image_keyword fmt
[JPEG_LAST
];
5707 bcopy (jpeg_format
, fmt
, sizeof fmt
);
5709 if (!parse_image_spec (object
, fmt
, JPEG_LAST
, Qjpeg
))
5712 /* Must specify either the :data or :file keyword. */
5713 return fmt
[JPEG_FILE
].count
+ fmt
[JPEG_DATA
].count
== 1;
5716 #endif /* HAVE_JPEG || MAC_OS */
5720 /* Work around a warning about HAVE_STDLIB_H being redefined in
5722 #ifdef HAVE_STDLIB_H
5723 #define HAVE_STDLIB_H_1
5724 #undef HAVE_STDLIB_H
5725 #endif /* HAVE_STLIB_H */
5727 #include <jpeglib.h>
5731 #ifdef HAVE_STLIB_H_1
5732 #define HAVE_STDLIB_H 1
5737 /* JPEG library details. */
5738 DEF_IMGLIB_FN (jpeg_CreateDecompress
);
5739 DEF_IMGLIB_FN (jpeg_start_decompress
);
5740 DEF_IMGLIB_FN (jpeg_finish_decompress
);
5741 DEF_IMGLIB_FN (jpeg_destroy_decompress
);
5742 DEF_IMGLIB_FN (jpeg_read_header
);
5743 DEF_IMGLIB_FN (jpeg_read_scanlines
);
5744 DEF_IMGLIB_FN (jpeg_stdio_src
);
5745 DEF_IMGLIB_FN (jpeg_std_error
);
5746 DEF_IMGLIB_FN (jpeg_resync_to_restart
);
5749 init_jpeg_functions (void)
5753 if (!(library
= LoadLibrary ("libjpeg.dll"))
5754 && !(library
= LoadLibrary ("jpeg-62.dll"))
5755 && !(library
= LoadLibrary ("jpeg.dll")))
5758 LOAD_IMGLIB_FN (library
, jpeg_finish_decompress
);
5759 LOAD_IMGLIB_FN (library
, jpeg_read_scanlines
);
5760 LOAD_IMGLIB_FN (library
, jpeg_start_decompress
);
5761 LOAD_IMGLIB_FN (library
, jpeg_read_header
);
5762 LOAD_IMGLIB_FN (library
, jpeg_stdio_src
);
5763 LOAD_IMGLIB_FN (library
, jpeg_CreateDecompress
);
5764 LOAD_IMGLIB_FN (library
, jpeg_destroy_decompress
);
5765 LOAD_IMGLIB_FN (library
, jpeg_std_error
);
5766 LOAD_IMGLIB_FN (library
, jpeg_resync_to_restart
);
5770 /* Wrapper since we can't directly assign the function pointer
5771 to another function pointer that was declared more completely easily. */
5773 jpeg_resync_to_restart_wrapper(cinfo
, desired
)
5774 j_decompress_ptr cinfo
;
5777 return fn_jpeg_resync_to_restart (cinfo
, desired
);
5782 #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a)
5783 #define fn_jpeg_start_decompress jpeg_start_decompress
5784 #define fn_jpeg_finish_decompress jpeg_finish_decompress
5785 #define fn_jpeg_destroy_decompress jpeg_destroy_decompress
5786 #define fn_jpeg_read_header jpeg_read_header
5787 #define fn_jpeg_read_scanlines jpeg_read_scanlines
5788 #define fn_jpeg_stdio_src jpeg_stdio_src
5789 #define fn_jpeg_std_error jpeg_std_error
5790 #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart
5792 #endif /* HAVE_NTGUI */
5794 struct my_jpeg_error_mgr
5796 struct jpeg_error_mgr pub
;
5797 jmp_buf setjmp_buffer
;
5802 my_error_exit (cinfo
)
5805 struct my_jpeg_error_mgr
*mgr
= (struct my_jpeg_error_mgr
*) cinfo
->err
;
5806 longjmp (mgr
->setjmp_buffer
, 1);
5810 /* Init source method for JPEG data source manager. Called by
5811 jpeg_read_header() before any data is actually read. See
5812 libjpeg.doc from the JPEG lib distribution. */
5815 our_init_source (cinfo
)
5816 j_decompress_ptr cinfo
;
5821 /* Fill input buffer method for JPEG data source manager. Called
5822 whenever more data is needed. We read the whole image in one step,
5823 so this only adds a fake end of input marker at the end. */
5826 our_fill_input_buffer (cinfo
)
5827 j_decompress_ptr cinfo
;
5829 /* Insert a fake EOI marker. */
5830 struct jpeg_source_mgr
*src
= cinfo
->src
;
5831 static JOCTET buffer
[2];
5833 buffer
[0] = (JOCTET
) 0xFF;
5834 buffer
[1] = (JOCTET
) JPEG_EOI
;
5836 src
->next_input_byte
= buffer
;
5837 src
->bytes_in_buffer
= 2;
5842 /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
5843 is the JPEG data source manager. */
5846 our_skip_input_data (cinfo
, num_bytes
)
5847 j_decompress_ptr cinfo
;
5850 struct jpeg_source_mgr
*src
= (struct jpeg_source_mgr
*) cinfo
->src
;
5854 if (num_bytes
> src
->bytes_in_buffer
)
5855 ERREXIT (cinfo
, JERR_INPUT_EOF
);
5857 src
->bytes_in_buffer
-= num_bytes
;
5858 src
->next_input_byte
+= num_bytes
;
5863 /* Method to terminate data source. Called by
5864 jpeg_finish_decompress() after all data has been processed. */
5867 our_term_source (cinfo
)
5868 j_decompress_ptr cinfo
;
5873 /* Set up the JPEG lib for reading an image from DATA which contains
5874 LEN bytes. CINFO is the decompression info structure created for
5875 reading the image. */
5878 jpeg_memory_src (cinfo
, data
, len
)
5879 j_decompress_ptr cinfo
;
5883 struct jpeg_source_mgr
*src
;
5885 if (cinfo
->src
== NULL
)
5887 /* First time for this JPEG object? */
5888 cinfo
->src
= (struct jpeg_source_mgr
*)
5889 (*cinfo
->mem
->alloc_small
) ((j_common_ptr
) cinfo
, JPOOL_PERMANENT
,
5890 sizeof (struct jpeg_source_mgr
));
5891 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
5892 src
->next_input_byte
= data
;
5895 src
= (struct jpeg_source_mgr
*) cinfo
->src
;
5896 src
->init_source
= our_init_source
;
5897 src
->fill_input_buffer
= our_fill_input_buffer
;
5898 src
->skip_input_data
= our_skip_input_data
;
5899 src
->resync_to_restart
= jpeg_resync_to_restart_wrapper
; /* Use default method. */
5900 src
->term_source
= our_term_source
;
5901 src
->bytes_in_buffer
= len
;
5902 src
->next_input_byte
= data
;
5906 /* Load image IMG for use on frame F. Patterned after example.c
5907 from the JPEG lib. */
5914 struct jpeg_decompress_struct cinfo
;
5915 struct my_jpeg_error_mgr mgr
;
5916 Lisp_Object file
, specified_file
;
5917 Lisp_Object specified_data
;
5918 FILE * volatile fp
= NULL
;
5920 int row_stride
, x
, y
;
5921 XImagePtr ximg
= NULL
;
5923 unsigned long *colors
;
5925 struct gcpro gcpro1
;
5927 /* Open the JPEG file. */
5928 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
5929 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
5933 if (NILP (specified_data
))
5935 file
= x_find_image_file (specified_file
);
5936 if (!STRINGP (file
))
5938 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
5943 fp
= fopen (SDATA (file
), "rb");
5946 image_error ("Cannot open `%s'", file
, Qnil
);
5952 /* Customize libjpeg's error handling to call my_error_exit when an
5953 error is detected. This function will perform a longjmp. */
5954 cinfo
.err
= fn_jpeg_std_error (&mgr
.pub
);
5955 mgr
.pub
.error_exit
= my_error_exit
;
5957 if ((rc
= setjmp (mgr
.setjmp_buffer
)) != 0)
5961 /* Called from my_error_exit. Display a JPEG error. */
5962 char buffer
[JMSG_LENGTH_MAX
];
5963 cinfo
.err
->format_message ((j_common_ptr
) &cinfo
, buffer
);
5964 image_error ("Error reading JPEG image `%s': %s", img
->spec
,
5965 build_string (buffer
));
5968 /* Close the input file and destroy the JPEG object. */
5970 fclose ((FILE *) fp
);
5971 fn_jpeg_destroy_decompress (&cinfo
);
5973 /* If we already have an XImage, free that. */
5974 x_destroy_x_image (ximg
);
5976 /* Free pixmap and colors. */
5977 x_clear_image (f
, img
);
5983 /* Create the JPEG decompression object. Let it read from fp.
5984 Read the JPEG image header. */
5985 fn_jpeg_CreateDecompress (&cinfo
, JPEG_LIB_VERSION
, sizeof (cinfo
));
5987 if (NILP (specified_data
))
5988 fn_jpeg_stdio_src (&cinfo
, (FILE *) fp
);
5990 jpeg_memory_src (&cinfo
, SDATA (specified_data
),
5991 SBYTES (specified_data
));
5993 fn_jpeg_read_header (&cinfo
, TRUE
);
5995 /* Customize decompression so that color quantization will be used.
5996 Start decompression. */
5997 cinfo
.quantize_colors
= TRUE
;
5998 fn_jpeg_start_decompress (&cinfo
);
5999 width
= img
->width
= cinfo
.output_width
;
6000 height
= img
->height
= cinfo
.output_height
;
6002 /* Create X image and pixmap. */
6003 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6004 longjmp (mgr
.setjmp_buffer
, 2);
6006 /* Allocate colors. When color quantization is used,
6007 cinfo.actual_number_of_colors has been set with the number of
6008 colors generated, and cinfo.colormap is a two-dimensional array
6009 of color indices in the range 0..cinfo.actual_number_of_colors.
6010 No more than 255 colors will be generated. */
6014 if (cinfo
.out_color_components
> 2)
6015 ir
= 0, ig
= 1, ib
= 2;
6016 else if (cinfo
.out_color_components
> 1)
6017 ir
= 0, ig
= 1, ib
= 0;
6019 ir
= 0, ig
= 0, ib
= 0;
6021 /* Use the color table mechanism because it handles colors that
6022 cannot be allocated nicely. Such colors will be replaced with
6023 a default color, and we don't have to care about which colors
6024 can be freed safely, and which can't. */
6025 init_color_table ();
6026 colors
= (unsigned long *) alloca (cinfo
.actual_number_of_colors
6029 for (i
= 0; i
< cinfo
.actual_number_of_colors
; ++i
)
6031 /* Multiply RGB values with 255 because X expects RGB values
6032 in the range 0..0xffff. */
6033 int r
= cinfo
.colormap
[ir
][i
] << 8;
6034 int g
= cinfo
.colormap
[ig
][i
] << 8;
6035 int b
= cinfo
.colormap
[ib
][i
] << 8;
6036 colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6039 #ifdef COLOR_TABLE_SUPPORT
6040 /* Remember those colors actually allocated. */
6041 img
->colors
= colors_in_color_table (&img
->ncolors
);
6042 free_color_table ();
6043 #endif /* COLOR_TABLE_SUPPORT */
6047 row_stride
= width
* cinfo
.output_components
;
6048 buffer
= cinfo
.mem
->alloc_sarray ((j_common_ptr
) &cinfo
, JPOOL_IMAGE
,
6050 for (y
= 0; y
< height
; ++y
)
6052 fn_jpeg_read_scanlines (&cinfo
, buffer
, 1);
6053 for (x
= 0; x
< cinfo
.output_width
; ++x
)
6054 XPutPixel (ximg
, x
, y
, colors
[buffer
[0][x
]]);
6058 fn_jpeg_finish_decompress (&cinfo
);
6059 fn_jpeg_destroy_decompress (&cinfo
);
6061 fclose ((FILE *) fp
);
6063 /* Maybe fill in the background field while we have ximg handy. */
6064 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6065 IMAGE_BACKGROUND (img
, f
, ximg
);
6067 /* Put the image into the pixmap. */
6068 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6069 x_destroy_x_image (ximg
);
6074 #else /* HAVE_JPEG */
6083 return image_load_quartz2d (f
, img
, 0);
6085 return image_load_quicktime (f
, img
, kQTFileTypeJPEG
);
6090 #endif /* !HAVE_JPEG */
6094 /***********************************************************************
6096 ***********************************************************************/
6098 #if defined (HAVE_TIFF) || defined (MAC_OS)
6100 static int tiff_image_p
P_ ((Lisp_Object object
));
6101 static int tiff_load
P_ ((struct frame
*f
, struct image
*img
));
6103 /* The symbol `tiff' identifying images of this type. */
6107 /* Indices of image specification fields in tiff_format, below. */
6109 enum tiff_keyword_index
6118 TIFF_HEURISTIC_MASK
,
6124 /* Vector of image_keyword structures describing the format
6125 of valid user-defined image specifications. */
6127 static struct image_keyword tiff_format
[TIFF_LAST
] =
6129 {":type", IMAGE_SYMBOL_VALUE
, 1},
6130 {":data", IMAGE_STRING_VALUE
, 0},
6131 {":file", IMAGE_STRING_VALUE
, 0},
6132 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6133 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6134 {":relief", IMAGE_INTEGER_VALUE
, 0},
6135 {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6136 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6137 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6138 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6141 /* Structure describing the image type `tiff'. */
6143 static struct image_type tiff_type
=
6152 /* Return non-zero if OBJECT is a valid TIFF image specification. */
6155 tiff_image_p (object
)
6158 struct image_keyword fmt
[TIFF_LAST
];
6159 bcopy (tiff_format
, fmt
, sizeof fmt
);
6161 if (!parse_image_spec (object
, fmt
, TIFF_LAST
, Qtiff
))
6164 /* Must specify either the :data or :file keyword. */
6165 return fmt
[TIFF_FILE
].count
+ fmt
[TIFF_DATA
].count
== 1;
6168 #endif /* HAVE_TIFF || MAC_OS */
6176 /* TIFF library details. */
6177 DEF_IMGLIB_FN (TIFFSetErrorHandler
);
6178 DEF_IMGLIB_FN (TIFFSetWarningHandler
);
6179 DEF_IMGLIB_FN (TIFFOpen
);
6180 DEF_IMGLIB_FN (TIFFClientOpen
);
6181 DEF_IMGLIB_FN (TIFFGetField
);
6182 DEF_IMGLIB_FN (TIFFReadRGBAImage
);
6183 DEF_IMGLIB_FN (TIFFClose
);
6186 init_tiff_functions (void)
6190 if (!(library
= LoadLibrary ("libtiff.dll")))
6193 LOAD_IMGLIB_FN (library
, TIFFSetErrorHandler
);
6194 LOAD_IMGLIB_FN (library
, TIFFSetWarningHandler
);
6195 LOAD_IMGLIB_FN (library
, TIFFOpen
);
6196 LOAD_IMGLIB_FN (library
, TIFFClientOpen
);
6197 LOAD_IMGLIB_FN (library
, TIFFGetField
);
6198 LOAD_IMGLIB_FN (library
, TIFFReadRGBAImage
);
6199 LOAD_IMGLIB_FN (library
, TIFFClose
);
6205 #define fn_TIFFSetErrorHandler TIFFSetErrorHandler
6206 #define fn_TIFFSetWarningHandler TIFFSetWarningHandler
6207 #define fn_TIFFOpen TIFFOpen
6208 #define fn_TIFFClientOpen TIFFClientOpen
6209 #define fn_TIFFGetField TIFFGetField
6210 #define fn_TIFFReadRGBAImage TIFFReadRGBAImage
6211 #define fn_TIFFClose TIFFClose
6213 #endif /* HAVE_NTGUI */
6216 /* Reading from a memory buffer for TIFF images Based on the PNG
6217 memory source, but we have to provide a lot of extra functions.
6220 We really only need to implement read and seek, but I am not
6221 convinced that the TIFF library is smart enough not to destroy
6222 itself if we only hand it the function pointers we need to
6227 unsigned char *bytes
;
6234 tiff_read_from_memory (data
, buf
, size
)
6239 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6241 if (size
> src
->len
- src
->index
)
6243 bcopy (src
->bytes
+ src
->index
, buf
, size
);
6249 tiff_write_from_memory (data
, buf
, size
)
6258 tiff_seek_in_memory (data
, off
, whence
)
6263 tiff_memory_source
*src
= (tiff_memory_source
*) data
;
6268 case SEEK_SET
: /* Go from beginning of source. */
6272 case SEEK_END
: /* Go from end of source. */
6273 idx
= src
->len
+ off
;
6276 case SEEK_CUR
: /* Go from current position. */
6277 idx
= src
->index
+ off
;
6280 default: /* Invalid `whence'. */
6284 if (idx
> src
->len
|| idx
< 0)
6292 tiff_close_memory (data
)
6300 tiff_mmap_memory (data
, pbase
, psize
)
6305 /* It is already _IN_ memory. */
6310 tiff_unmap_memory (data
, base
, size
)
6315 /* We don't need to do this. */
6319 tiff_size_of_memory (data
)
6322 return ((tiff_memory_source
*) data
)->len
;
6327 tiff_error_handler (title
, format
, ap
)
6328 const char *title
, *format
;
6334 len
= sprintf (buf
, "TIFF error: %s ", title
);
6335 vsprintf (buf
+ len
, format
, ap
);
6336 add_to_log (buf
, Qnil
, Qnil
);
6341 tiff_warning_handler (title
, format
, ap
)
6342 const char *title
, *format
;
6348 len
= sprintf (buf
, "TIFF warning: %s ", title
);
6349 vsprintf (buf
+ len
, format
, ap
);
6350 add_to_log (buf
, Qnil
, Qnil
);
6354 /* Load TIFF image IMG for use on frame F. Value is non-zero if
6362 Lisp_Object file
, specified_file
;
6363 Lisp_Object specified_data
;
6365 int width
, height
, x
, y
;
6369 struct gcpro gcpro1
;
6370 tiff_memory_source memsrc
;
6372 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6373 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6377 fn_TIFFSetErrorHandler (tiff_error_handler
);
6378 fn_TIFFSetWarningHandler (tiff_warning_handler
);
6380 if (NILP (specified_data
))
6382 /* Read from a file */
6383 file
= x_find_image_file (specified_file
);
6384 if (!STRINGP (file
))
6386 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6391 /* Try to open the image file. */
6392 tiff
= fn_TIFFOpen (SDATA (file
), "r");
6395 image_error ("Cannot open `%s'", file
, Qnil
);
6402 /* Memory source! */
6403 memsrc
.bytes
= SDATA (specified_data
);
6404 memsrc
.len
= SBYTES (specified_data
);
6407 tiff
= fn_TIFFClientOpen ("memory_source", "r", &memsrc
,
6408 (TIFFReadWriteProc
) tiff_read_from_memory
,
6409 (TIFFReadWriteProc
) tiff_write_from_memory
,
6410 tiff_seek_in_memory
,
6412 tiff_size_of_memory
,
6418 image_error ("Cannot open memory source for `%s'", img
->spec
, Qnil
);
6424 /* Get width and height of the image, and allocate a raster buffer
6425 of width x height 32-bit values. */
6426 fn_TIFFGetField (tiff
, TIFFTAG_IMAGEWIDTH
, &width
);
6427 fn_TIFFGetField (tiff
, TIFFTAG_IMAGELENGTH
, &height
);
6428 buf
= (uint32
*) xmalloc (width
* height
* sizeof *buf
);
6430 rc
= fn_TIFFReadRGBAImage (tiff
, width
, height
, buf
, 0);
6431 fn_TIFFClose (tiff
);
6434 image_error ("Error reading TIFF image `%s'", img
->spec
, Qnil
);
6440 /* Create the X image and pixmap. */
6441 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6448 /* Initialize the color table. */
6449 init_color_table ();
6451 /* Process the pixel raster. Origin is in the lower-left corner. */
6452 for (y
= 0; y
< height
; ++y
)
6454 uint32
*row
= buf
+ y
* width
;
6456 for (x
= 0; x
< width
; ++x
)
6458 uint32 abgr
= row
[x
];
6459 int r
= TIFFGetR (abgr
) << 8;
6460 int g
= TIFFGetG (abgr
) << 8;
6461 int b
= TIFFGetB (abgr
) << 8;
6462 XPutPixel (ximg
, x
, height
- 1 - y
, lookup_rgb_color (f
, r
, g
, b
));
6466 #ifdef COLOR_TABLE_SUPPORT
6467 /* Remember the colors allocated for the image. Free the color table. */
6468 img
->colors
= colors_in_color_table (&img
->ncolors
);
6469 free_color_table ();
6470 #endif /* COLOR_TABLE_SUPPORT */
6473 img
->height
= height
;
6475 /* Maybe fill in the background field while we have ximg handy. */
6476 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6477 IMAGE_BACKGROUND (img
, f
, ximg
);
6479 /* Put the image into the pixmap, then free the X image and its buffer. */
6480 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6481 x_destroy_x_image (ximg
);
6488 #else /* HAVE_TIFF */
6496 return image_load_quicktime (f
, img
, kQTFileTypeTIFF
);
6500 #endif /* !HAVE_TIFF */
6504 /***********************************************************************
6506 ***********************************************************************/
6508 #if defined (HAVE_GIF) || defined (MAC_OS)
6510 static int gif_image_p
P_ ((Lisp_Object object
));
6511 static int gif_load
P_ ((struct frame
*f
, struct image
*img
));
6513 /* The symbol `gif' identifying images of this type. */
6517 /* Indices of image specification fields in gif_format, below. */
6519 enum gif_keyword_index
6535 /* Vector of image_keyword structures describing the format
6536 of valid user-defined image specifications. */
6538 static struct image_keyword gif_format
[GIF_LAST
] =
6540 {":type", IMAGE_SYMBOL_VALUE
, 1},
6541 {":data", IMAGE_STRING_VALUE
, 0},
6542 {":file", IMAGE_STRING_VALUE
, 0},
6543 {":ascent", IMAGE_ASCENT_VALUE
, 0},
6544 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
6545 {":relief", IMAGE_INTEGER_VALUE
, 0},
6546 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6547 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6548 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
6549 {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE
, 0},
6550 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
6553 /* Structure describing the image type `gif'. */
6555 static struct image_type gif_type
=
6564 /* Return non-zero if OBJECT is a valid GIF image specification. */
6567 gif_image_p (object
)
6570 struct image_keyword fmt
[GIF_LAST
];
6571 bcopy (gif_format
, fmt
, sizeof fmt
);
6573 if (!parse_image_spec (object
, fmt
, GIF_LAST
, Qgif
))
6576 /* Must specify either the :data or :file keyword. */
6577 return fmt
[GIF_FILE
].count
+ fmt
[GIF_DATA
].count
== 1;
6580 #endif /* HAVE_GIF || MAC_OS */
6584 #if defined (HAVE_NTGUI) || defined (MAC_OS)
6585 /* avoid conflict with QuickdrawText.h */
6586 #define DrawText gif_DrawText
6587 #include <gif_lib.h>
6590 #else /* HAVE_NTGUI || MAC_OS */
6592 #include <gif_lib.h>
6594 #endif /* HAVE_NTGUI || MAC_OS */
6599 /* GIF library details. */
6600 DEF_IMGLIB_FN (DGifCloseFile
);
6601 DEF_IMGLIB_FN (DGifSlurp
);
6602 DEF_IMGLIB_FN (DGifOpen
);
6603 DEF_IMGLIB_FN (DGifOpenFileName
);
6606 init_gif_functions (void)
6610 if (!(library
= LoadLibrary ("libungif.dll")))
6613 LOAD_IMGLIB_FN (library
, DGifCloseFile
);
6614 LOAD_IMGLIB_FN (library
, DGifSlurp
);
6615 LOAD_IMGLIB_FN (library
, DGifOpen
);
6616 LOAD_IMGLIB_FN (library
, DGifOpenFileName
);
6622 #define fn_DGifCloseFile DGifCloseFile
6623 #define fn_DGifSlurp DGifSlurp
6624 #define fn_DGifOpen DGifOpen
6625 #define fn_DGifOpenFileName DGifOpenFileName
6627 #endif /* HAVE_NTGUI */
6629 /* Reading a GIF image from memory
6630 Based on the PNG memory stuff to a certain extent. */
6634 unsigned char *bytes
;
6640 /* Make the current memory source available to gif_read_from_memory.
6641 It's done this way because not all versions of libungif support
6642 a UserData field in the GifFileType structure. */
6643 static gif_memory_source
*current_gif_memory_src
;
6646 gif_read_from_memory (file
, buf
, len
)
6651 gif_memory_source
*src
= current_gif_memory_src
;
6653 if (len
> src
->len
- src
->index
)
6656 bcopy (src
->bytes
+ src
->index
, buf
, len
);
6662 /* Load GIF image IMG for use on frame F. Value is non-zero if
6670 Lisp_Object file
, specified_file
;
6671 Lisp_Object specified_data
;
6672 int rc
, width
, height
, x
, y
, i
;
6674 ColorMapObject
*gif_color_map
;
6675 unsigned long pixel_colors
[256];
6677 struct gcpro gcpro1
;
6679 int ino
, image_left
, image_top
, image_width
, image_height
;
6680 gif_memory_source memsrc
;
6681 unsigned char *raster
;
6683 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6684 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6688 if (NILP (specified_data
))
6690 file
= x_find_image_file (specified_file
);
6691 if (!STRINGP (file
))
6693 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6698 /* Open the GIF file. */
6699 gif
= fn_DGifOpenFileName (SDATA (file
));
6702 image_error ("Cannot open `%s'", file
, Qnil
);
6709 /* Read from memory! */
6710 current_gif_memory_src
= &memsrc
;
6711 memsrc
.bytes
= SDATA (specified_data
);
6712 memsrc
.len
= SBYTES (specified_data
);
6715 gif
= fn_DGifOpen(&memsrc
, gif_read_from_memory
);
6718 image_error ("Cannot open memory source `%s'", img
->spec
, Qnil
);
6724 /* Read entire contents. */
6725 rc
= fn_DGifSlurp (gif
);
6726 if (rc
== GIF_ERROR
)
6728 image_error ("Error reading `%s'", img
->spec
, Qnil
);
6729 fn_DGifCloseFile (gif
);
6734 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6735 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
6736 if (ino
>= gif
->ImageCount
)
6738 image_error ("Invalid image number `%s' in image `%s'",
6740 fn_DGifCloseFile (gif
);
6745 width
= img
->width
= max (gif
->SWidth
, gif
->Image
.Left
+ gif
->Image
.Width
);
6746 height
= img
->height
= max (gif
->SHeight
, gif
->Image
.Top
+ gif
->Image
.Height
);
6748 /* Create the X image and pixmap. */
6749 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
6751 fn_DGifCloseFile (gif
);
6756 /* Allocate colors. */
6757 gif_color_map
= gif
->SavedImages
[ino
].ImageDesc
.ColorMap
;
6759 gif_color_map
= gif
->SColorMap
;
6760 init_color_table ();
6761 bzero (pixel_colors
, sizeof pixel_colors
);
6763 for (i
= 0; i
< gif_color_map
->ColorCount
; ++i
)
6765 int r
= gif_color_map
->Colors
[i
].Red
<< 8;
6766 int g
= gif_color_map
->Colors
[i
].Green
<< 8;
6767 int b
= gif_color_map
->Colors
[i
].Blue
<< 8;
6768 pixel_colors
[i
] = lookup_rgb_color (f
, r
, g
, b
);
6771 #ifdef COLOR_TABLE_SUPPORT
6772 img
->colors
= colors_in_color_table (&img
->ncolors
);
6773 free_color_table ();
6774 #endif /* COLOR_TABLE_SUPPORT */
6776 /* Clear the part of the screen image that are not covered by
6777 the image from the GIF file. Full animated GIF support
6778 requires more than can be done here (see the gif89 spec,
6779 disposal methods). Let's simply assume that the part
6780 not covered by a sub-image is in the frame's background color. */
6781 image_top
= gif
->SavedImages
[ino
].ImageDesc
.Top
;
6782 image_left
= gif
->SavedImages
[ino
].ImageDesc
.Left
;
6783 image_width
= gif
->SavedImages
[ino
].ImageDesc
.Width
;
6784 image_height
= gif
->SavedImages
[ino
].ImageDesc
.Height
;
6786 for (y
= 0; y
< image_top
; ++y
)
6787 for (x
= 0; x
< width
; ++x
)
6788 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
6790 for (y
= image_top
+ image_height
; y
< height
; ++y
)
6791 for (x
= 0; x
< width
; ++x
)
6792 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
6794 for (y
= image_top
; y
< image_top
+ image_height
; ++y
)
6796 for (x
= 0; x
< image_left
; ++x
)
6797 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
6798 for (x
= image_left
+ image_width
; x
< width
; ++x
)
6799 XPutPixel (ximg
, x
, y
, FRAME_BACKGROUND_PIXEL (f
));
6802 /* Read the GIF image into the X image. We use a local variable
6803 `raster' here because RasterBits below is a char *, and invites
6804 problems with bytes >= 0x80. */
6805 raster
= (unsigned char *) gif
->SavedImages
[ino
].RasterBits
;
6807 if (gif
->SavedImages
[ino
].ImageDesc
.Interlace
)
6809 static int interlace_start
[] = {0, 4, 2, 1};
6810 static int interlace_increment
[] = {8, 8, 4, 2};
6812 int row
= interlace_start
[0];
6816 for (y
= 0; y
< image_height
; y
++)
6818 if (row
>= image_height
)
6820 row
= interlace_start
[++pass
];
6821 while (row
>= image_height
)
6822 row
= interlace_start
[++pass
];
6825 for (x
= 0; x
< image_width
; x
++)
6827 int i
= raster
[(y
* image_width
) + x
];
6828 XPutPixel (ximg
, x
+ image_left
, row
+ image_top
,
6832 row
+= interlace_increment
[pass
];
6837 for (y
= 0; y
< image_height
; ++y
)
6838 for (x
= 0; x
< image_width
; ++x
)
6840 int i
= raster
[y
* image_width
+ x
];
6841 XPutPixel (ximg
, x
+ image_left
, y
+ image_top
, pixel_colors
[i
]);
6845 fn_DGifCloseFile (gif
);
6847 /* Maybe fill in the background field while we have ximg handy. */
6848 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
6849 IMAGE_BACKGROUND (img
, f
, ximg
);
6851 /* Put the image into the pixmap, then free the X image and its buffer. */
6852 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
6853 x_destroy_x_image (ximg
);
6867 Lisp_Object specified_file
, file
;
6868 Lisp_Object specified_data
;
6870 Boolean graphic_p
, movie_p
, prefer_graphic_p
;
6878 Lisp_Object specified_bg
;
6884 struct gcpro gcpro1
;
6887 specified_file
= image_spec_value (img
->spec
, QCfile
, NULL
);
6888 specified_data
= image_spec_value (img
->spec
, QCdata
, NULL
);
6890 if (NILP (specified_data
))
6892 /* Read from a file */
6896 err
= find_image_fsspec (specified_file
, &file
, &fss
);
6900 image_error ("Cannot find image file `%s'", specified_file
, Qnil
);
6905 err
= CanQuickTimeOpenFile (&fss
, kQTFileTypeGIF
, 0,
6906 &graphic_p
, &movie_p
, &prefer_graphic_p
, 0);
6910 if (!graphic_p
&& !movie_p
)
6912 if (prefer_graphic_p
)
6913 return image_load_qt_1 (f
, img
, kQTFileTypeGIF
, &fss
, NULL
);
6914 err
= OpenMovieFile (&fss
, &refnum
, fsRdPerm
);
6917 err
= NewMovieFromFile (&movie
, refnum
, NULL
, NULL
, 0, NULL
);
6918 CloseMovieFile (refnum
);
6921 image_error ("Error reading `%s'", file
, Qnil
);
6927 /* Memory source! */
6929 long file_type_atom
[3];
6931 err
= PtrToHand (SDATA (specified_data
), &dh
, SBYTES (specified_data
));
6934 image_error ("Cannot allocate data handle for `%s'",
6939 file_type_atom
[0] = EndianU32_NtoB (sizeof (long) * 3);
6940 file_type_atom
[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType
);
6941 file_type_atom
[2] = EndianU32_NtoB (kQTFileTypeGIF
);
6942 err
= PtrToHand (&dh
, &dref
, sizeof (Handle
));
6945 err
= PtrAndHand ("\p", dref
, 1);
6947 err
= PtrAndHand (file_type_atom
, dref
, sizeof (long) * 3);
6950 image_error ("Cannot allocate handle data ref for `%s'", img
->spec
, Qnil
);
6953 err
= CanQuickTimeOpenDataRef (dref
, HandleDataHandlerSubType
, &graphic_p
,
6954 &movie_p
, &prefer_graphic_p
, 0);
6958 if (!graphic_p
&& !movie_p
)
6960 if (prefer_graphic_p
)
6964 DisposeHandle (dref
);
6965 success_p
= image_load_qt_1 (f
, img
, kQTFileTypeGIF
, NULL
, dh
);
6969 err
= NewMovieFromDataRef (&movie
, 0, NULL
, dref
,
6970 HandleDataHandlerSubType
);
6971 DisposeHandle (dref
);
6976 image
= image_spec_value (img
->spec
, QCindex
, NULL
);
6977 ino
= INTEGERP (image
) ? XFASTINT (image
) : 0;
6978 track
= GetMovieIndTrack (movie
, 1);
6979 media
= GetTrackMedia (track
);
6980 nsamples
= GetMediaSampleCount (media
);
6981 if (ino
>= nsamples
)
6983 image_error ("Invalid image number `%s' in image `%s'",
6988 specified_bg
= image_spec_value (img
->spec
, QCbackground
, NULL
);
6989 if (!STRINGP (specified_bg
) ||
6990 !mac_defined_color (f
, SDATA (specified_bg
), &color
, 0))
6992 color
.pixel
= FRAME_BACKGROUND_PIXEL (f
);
6993 color
.red
= RED16_FROM_ULONG (color
.pixel
);
6994 color
.green
= GREEN16_FROM_ULONG (color
.pixel
);
6995 color
.blue
= BLUE16_FROM_ULONG (color
.pixel
);
6997 GetMovieBox (movie
, &rect
);
6998 width
= img
->width
= rect
.right
- rect
.left
;
6999 height
= img
->height
= rect
.bottom
- rect
.top
;
7000 if (!x_create_x_image_and_pixmap (f
, width
, height
, 0, &ximg
, &img
->pixmap
))
7003 SetGWorld (ximg
, NULL
);
7004 bg_color
.red
= color
.red
;
7005 bg_color
.green
= color
.green
;
7006 bg_color
.blue
= color
.blue
;
7007 RGBBackColor (&bg_color
);
7008 SetMovieActive (movie
, TRUE
);
7009 SetMovieGWorld (movie
, ximg
, NULL
);
7010 SampleNumToMediaTime (media
, ino
+ 1, &time
, NULL
);
7011 SetMovieTimeValue (movie
, time
);
7012 MoviesTask (movie
, 0L);
7013 DisposeTrackMedia (media
);
7014 DisposeMovieTrack (track
);
7015 DisposeMovie (movie
);
7018 /* Maybe fill in the background field while we have ximg handy. */
7019 if (NILP (image_spec_value (img
->spec
, QCbackground
, NULL
)))
7020 IMAGE_BACKGROUND (img
, f
, ximg
);
7022 /* Put the image into the pixmap. */
7023 x_put_x_image (f
, ximg
, img
->pixmap
, width
, height
);
7024 x_destroy_x_image (ximg
);
7028 image_error ("Cannot open `%s'", file
, Qnil
);
7031 DisposeTrackMedia (media
);
7033 DisposeMovieTrack (track
);
7035 DisposeMovie (movie
);
7042 #endif /* HAVE_GIF */
7046 /***********************************************************************
7048 ***********************************************************************/
7050 #ifdef HAVE_X_WINDOWS
7051 #define HAVE_GHOSTSCRIPT 1
7052 #endif /* HAVE_X_WINDOWS */
7054 /* The symbol `postscript' identifying images of this type. */
7056 Lisp_Object Qpostscript
;
7058 #ifdef HAVE_GHOSTSCRIPT
7060 static int gs_image_p
P_ ((Lisp_Object object
));
7061 static int gs_load
P_ ((struct frame
*f
, struct image
*img
));
7062 static void gs_clear_image
P_ ((struct frame
*f
, struct image
*img
));
7064 /* Keyword symbols. */
7066 Lisp_Object QCloader
, QCbounding_box
, QCpt_width
, QCpt_height
;
7068 /* Indices of image specification fields in gs_format, below. */
7070 enum gs_keyword_index
7088 /* Vector of image_keyword structures describing the format
7089 of valid user-defined image specifications. */
7091 static struct image_keyword gs_format
[GS_LAST
] =
7093 {":type", IMAGE_SYMBOL_VALUE
, 1},
7094 {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7095 {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE
, 1},
7096 {":file", IMAGE_STRING_VALUE
, 1},
7097 {":loader", IMAGE_FUNCTION_VALUE
, 0},
7098 {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE
, 1},
7099 {":ascent", IMAGE_ASCENT_VALUE
, 0},
7100 {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR
, 0},
7101 {":relief", IMAGE_INTEGER_VALUE
, 0},
7102 {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7103 {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7104 {":mask", IMAGE_DONT_CHECK_VALUE_TYPE
, 0},
7105 {":background", IMAGE_STRING_OR_NIL_VALUE
, 0}
7108 /* Structure describing the image type `ghostscript'. */
7110 static struct image_type gs_type
=
7120 /* Free X resources of Ghostscript image IMG which is used on frame F. */
7123 gs_clear_image (f
, img
)
7127 /* IMG->data.ptr_val may contain a recorded colormap. */
7128 xfree (img
->data
.ptr_val
);
7129 x_clear_image (f
, img
);
7133 /* Return non-zero if OBJECT is a valid Ghostscript image
7140 struct image_keyword fmt
[GS_LAST
];
7144 bcopy (gs_format
, fmt
, sizeof fmt
);
7146 if (!parse_image_spec (object
, fmt
, GS_LAST
, Qpostscript
))
7149 /* Bounding box must be a list or vector containing 4 integers. */
7150 tem
= fmt
[GS_BOUNDING_BOX
].value
;
7153 for (i
= 0; i
< 4; ++i
, tem
= XCDR (tem
))
7154 if (!CONSP (tem
) || !INTEGERP (XCAR (tem
)))
7159 else if (VECTORP (tem
))
7161 if (XVECTOR (tem
)->size
!= 4)
7163 for (i
= 0; i
< 4; ++i
)
7164 if (!INTEGERP (XVECTOR (tem
)->contents
[i
]))
7174 /* Load Ghostscript image IMG for use on frame F. Value is non-zero
7183 Lisp_Object window_and_pixmap_id
= Qnil
, loader
, pt_height
, pt_width
;
7184 struct gcpro gcpro1
, gcpro2
;
7186 double in_width
, in_height
;
7187 Lisp_Object pixel_colors
= Qnil
;
7189 /* Compute pixel size of pixmap needed from the given size in the
7190 image specification. Sizes in the specification are in pt. 1 pt
7191 = 1/72 in, xdpi and ydpi are stored in the frame's X display
7193 pt_width
= image_spec_value (img
->spec
, QCpt_width
, NULL
);
7194 in_width
= XFASTINT (pt_width
) / 72.0;
7195 img
->width
= in_width
* FRAME_X_DISPLAY_INFO (f
)->resx
;
7196 pt_height
= image_spec_value (img
->spec
, QCpt_height
, NULL
);
7197 in_height
= XFASTINT (pt_height
) / 72.0;
7198 img
->height
= in_height
* FRAME_X_DISPLAY_INFO (f
)->resy
;
7200 /* Create the pixmap. */
7201 xassert (img
->pixmap
== NO_PIXMAP
);
7203 /* Only W32 version did BLOCK_INPUT here. ++kfs */
7205 img
->pixmap
= XCreatePixmap (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
),
7206 img
->width
, img
->height
,
7207 DefaultDepthOfScreen (FRAME_X_SCREEN (f
)));
7212 image_error ("Unable to create pixmap for `%s'", img
->spec
, Qnil
);
7216 /* Call the loader to fill the pixmap. It returns a process object
7217 if successful. We do not record_unwind_protect here because
7218 other places in redisplay like calling window scroll functions
7219 don't either. Let the Lisp loader use `unwind-protect' instead. */
7220 GCPRO2 (window_and_pixmap_id
, pixel_colors
);
7222 sprintf (buffer
, "%lu %lu",
7223 (unsigned long) FRAME_X_WINDOW (f
),
7224 (unsigned long) img
->pixmap
);
7225 window_and_pixmap_id
= build_string (buffer
);
7227 sprintf (buffer
, "%lu %lu",
7228 FRAME_FOREGROUND_PIXEL (f
),
7229 FRAME_BACKGROUND_PIXEL (f
));
7230 pixel_colors
= build_string (buffer
);
7232 XSETFRAME (frame
, f
);
7233 loader
= image_spec_value (img
->spec
, QCloader
, NULL
);
7235 loader
= intern ("gs-load-image");
7237 img
->data
.lisp_val
= call6 (loader
, frame
, img
->spec
,
7238 make_number (img
->width
),
7239 make_number (img
->height
),
7240 window_and_pixmap_id
,
7243 return PROCESSP (img
->data
.lisp_val
);
7247 /* Kill the Ghostscript process that was started to fill PIXMAP on
7248 frame F. Called from XTread_socket when receiving an event
7249 telling Emacs that Ghostscript has finished drawing. */
7252 x_kill_gs_process (pixmap
, f
)
7256 struct image_cache
*c
= FRAME_X_IMAGE_CACHE (f
);
7260 /* Find the image containing PIXMAP. */
7261 for (i
= 0; i
< c
->used
; ++i
)
7262 if (c
->images
[i
]->pixmap
== pixmap
)
7265 /* Should someone in between have cleared the image cache, for
7266 instance, give up. */
7270 /* Kill the GS process. We should have found PIXMAP in the image
7271 cache and its image should contain a process object. */
7273 xassert (PROCESSP (img
->data
.lisp_val
));
7274 Fkill_process (img
->data
.lisp_val
, Qnil
);
7275 img
->data
.lisp_val
= Qnil
;
7277 #if defined (HAVE_X_WINDOWS)
7279 /* On displays with a mutable colormap, figure out the colors
7280 allocated for the image by looking at the pixels of an XImage for
7282 class = FRAME_X_VISUAL (f
)->class;
7283 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
7289 /* Try to get an XImage for img->pixmep. */
7290 ximg
= XGetImage (FRAME_X_DISPLAY (f
), img
->pixmap
,
7291 0, 0, img
->width
, img
->height
, ~0, ZPixmap
);
7296 /* Initialize the color table. */
7297 init_color_table ();
7299 /* For each pixel of the image, look its color up in the
7300 color table. After having done so, the color table will
7301 contain an entry for each color used by the image. */
7302 for (y
= 0; y
< img
->height
; ++y
)
7303 for (x
= 0; x
< img
->width
; ++x
)
7305 unsigned long pixel
= XGetPixel (ximg
, x
, y
);
7306 lookup_pixel_color (f
, pixel
);
7309 /* Record colors in the image. Free color table and XImage. */
7310 #ifdef COLOR_TABLE_SUPPORT
7311 img
->colors
= colors_in_color_table (&img
->ncolors
);
7312 free_color_table ();
7314 XDestroyImage (ximg
);
7316 #if 0 /* This doesn't seem to be the case. If we free the colors
7317 here, we get a BadAccess later in x_clear_image when
7318 freeing the colors. */
7319 /* We have allocated colors once, but Ghostscript has also
7320 allocated colors on behalf of us. So, to get the
7321 reference counts right, free them once. */
7323 x_free_colors (f
, img
->colors
, img
->ncolors
);
7327 image_error ("Cannot get X image of `%s'; colors will not be freed",
7332 #endif /* HAVE_X_WINDOWS */
7334 /* Now that we have the pixmap, compute mask and transform the
7335 image if requested. */
7337 postprocess_image (f
, img
);
7341 #endif /* HAVE_GHOSTSCRIPT */
7344 /***********************************************************************
7346 ***********************************************************************/
7350 DEFUN ("imagep", Fimagep
, Simagep
, 1, 1, 0,
7351 doc
: /* Value is non-nil if SPEC is a valid image specification. */)
7355 return valid_image_p (spec
) ? Qt
: Qnil
;
7359 DEFUN ("lookup-image", Flookup_image
, Slookup_image
, 1, 1, 0, "")
7365 if (valid_image_p (spec
))
7366 id
= lookup_image (SELECTED_FRAME (), spec
);
7369 return make_number (id
);
7372 #endif /* GLYPH_DEBUG != 0 */
7375 /***********************************************************************
7377 ***********************************************************************/
7382 QCascent
= intern (":ascent");
7383 staticpro (&QCascent
);
7384 QCmargin
= intern (":margin");
7385 staticpro (&QCmargin
);
7386 QCrelief
= intern (":relief");
7387 staticpro (&QCrelief
);
7388 QCconversion
= intern (":conversion");
7389 staticpro (&QCconversion
);
7390 QCcolor_symbols
= intern (":color-symbols");
7391 staticpro (&QCcolor_symbols
);
7392 QCheuristic_mask
= intern (":heuristic-mask");
7393 staticpro (&QCheuristic_mask
);
7394 QCindex
= intern (":index");
7395 staticpro (&QCindex
);
7396 QCmatrix
= intern (":matrix");
7397 staticpro (&QCmatrix
);
7398 QCcolor_adjustment
= intern (":color-adjustment");
7399 staticpro (&QCcolor_adjustment
);
7400 QCmask
= intern (":mask");
7401 staticpro (&QCmask
);
7403 Qlaplace
= intern ("laplace");
7404 staticpro (&Qlaplace
);
7405 Qemboss
= intern ("emboss");
7406 staticpro (&Qemboss
);
7407 Qedge_detection
= intern ("edge-detection");
7408 staticpro (&Qedge_detection
);
7409 Qheuristic
= intern ("heuristic");
7410 staticpro (&Qheuristic
);
7411 Qcenter
= intern ("center");
7412 staticpro (&Qcenter
);
7414 Qpostscript
= intern ("postscript");
7415 staticpro (&Qpostscript
);
7416 #ifdef HAVE_GHOSTSCRIPT
7417 QCloader
= intern (":loader");
7418 staticpro (&QCloader
);
7419 QCbounding_box
= intern (":bounding-box");
7420 staticpro (&QCbounding_box
);
7421 QCpt_width
= intern (":pt-width");
7422 staticpro (&QCpt_width
);
7423 QCpt_height
= intern (":pt-height");
7424 staticpro (&QCpt_height
);
7425 #endif /* HAVE_GHOSTSCRIPT */
7427 Qpbm
= intern ("pbm");
7430 Qxbm
= intern ("xbm");
7434 Qxpm
= intern ("xpm");
7438 #if defined (HAVE_JPEG) || defined (MAC_OS)
7439 Qjpeg
= intern ("jpeg");
7443 #if defined (HAVE_TIFF) || defined (MAC_OS)
7444 Qtiff
= intern ("tiff");
7448 #if defined (HAVE_GIF) || defined (MAC_OS)
7449 Qgif
= intern ("gif");
7453 #if defined (HAVE_PNG) || defined (MAC_OS)
7454 Qpng
= intern ("png");
7458 defsubr (&Sclear_image_cache
);
7459 defsubr (&Simage_size
);
7460 defsubr (&Simage_mask_p
);
7464 defsubr (&Slookup_image
);
7467 DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images
,
7468 doc
: /* Non-nil means always draw a cross over disabled images.
7469 Disabled images are those having an `:conversion disabled' property.
7470 A cross is always drawn on black & white displays. */);
7471 cross_disabled_images
= 0;
7473 DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path
,
7474 doc
: /* List of directories to search for window system bitmap files. */);
7475 Vx_bitmap_file_path
= decode_env_path ((char *) 0, PATH_BITMAPS
);
7477 DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay
,
7478 doc
: /* Time after which cached images are removed from the cache.
7479 When an image has not been displayed this many seconds, remove it
7480 from the image cache. Value must be an integer or nil with nil
7481 meaning don't clear the cache. */);
7482 Vimage_cache_eviction_delay
= make_number (30 * 60);
7487 /* Image types that rely on external libraries are loaded dynamically
7488 if the library is available. */
7489 #define IF_LIB_AVAILABLE(init_lib_fn) if (init_lib_fn())
7491 #define IF_LIB_AVAILABLE(init_func) /* Load unconditionally */
7492 #endif /* HAVE_NTGUI */
7498 Vimage_types
= Qnil
;
7500 define_image_type (&xbm_type
);
7501 define_image_type (&pbm_type
);
7504 IF_LIB_AVAILABLE(init_xpm_functions
)
7505 define_image_type (&xpm_type
);
7508 #if defined (HAVE_JPEG) || defined (MAC_OS)
7509 IF_LIB_AVAILABLE(init_jpeg_functions
)
7510 define_image_type (&jpeg_type
);
7513 #if defined (HAVE_TIFF) || defined (MAC_OS)
7514 IF_LIB_AVAILABLE(init_tiff_functions
)
7515 define_image_type (&tiff_type
);
7518 #if defined (HAVE_GIF) || defined (MAC_OS)
7519 IF_LIB_AVAILABLE(init_gif_functions
)
7520 define_image_type (&gif_type
);
7523 #if defined (HAVE_PNG) || defined (MAC_OS)
7524 IF_LIB_AVAILABLE(init_png_functions
)
7525 define_image_type (&png_type
);
7528 #ifdef HAVE_GHOSTSCRIPT
7529 define_image_type (&gs_type
);
7533 /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */
7536 init_image_func_pointer ();
7541 /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9
7542 (do not change this comment) */