1 /* xfaces.c -- "Face" primitives.
3 Copyright (C) 1993-1994, 1998-2013 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>. */
20 /* New face implementation by Gerd Moellmann <gerd@gnu.org>. */
24 When using Emacs with X, the display style of characters can be
25 changed by defining `faces'. Each face can specify the following
32 3. Relative proportionate width, aka character set width or set
33 width (swidth), e.g. `semi-compressed'.
35 4. Font height in 1/10pt.
37 5. Font weight, e.g. `bold'.
39 6. Font slant, e.g. `italic'.
45 9. Whether or not characters should be underlined, and in what color.
47 10. Whether or not characters should be displayed in inverse video.
49 11. A background stipple, a bitmap.
51 12. Whether or not characters should be overlined, and in what color.
53 13. Whether or not characters should be strike-through, and in what
56 14. Whether or not a box should be drawn around characters, the box
57 type, and, for simple boxes, in what color.
59 15. Font-spec, or nil. This is a special attribute.
61 A font-spec is a collection of font attributes (specs).
63 When this attribute is specified, the face uses a font matching
64 with the specs as is except for what overwritten by the specs in
65 the fontset (see below). In addition, the other font-related
66 attributes (1st thru 5th) are updated from the spec.
68 On the other hand, if one of the other font-related attributes are
69 specified, the corresponding specs in this attribute is set to nil.
71 15. A face name or list of face names from which to inherit attributes.
73 16. A specified average font width, which is invisible from Lisp,
74 and is used to ensure that a font specified on the command line,
75 for example, can be matched exactly.
77 17. A fontset name. This is another special attribute.
79 A fontset is a mappings from characters to font-specs, and the
80 specs overwrite the font-spec in the 14th attribute.
83 Faces are frame-local by nature because Emacs allows to define the
84 same named face (face names are symbols) differently for different
85 frames. Each frame has an alist of face definitions for all named
86 faces. The value of a named face in such an alist is a Lisp vector
87 with the symbol `face' in slot 0, and a slot for each of the face
88 attributes mentioned above.
90 There is also a global face alist `Vface_new_frame_defaults'. Face
91 definitions from this list are used to initialize faces of newly
94 A face doesn't have to specify all attributes. Those not specified
95 have a value of `unspecified'. Faces specifying all attributes but
96 the 14th are called `fully-specified'.
101 The display style of a given character in the text is determined by
102 combining several faces. This process is called `face merging'.
103 Any aspect of the display style that isn't specified by overlays or
104 text properties is taken from the `default' face. Since it is made
105 sure that the default face is always fully-specified, face merging
106 always results in a fully-specified face.
111 After all face attributes for a character have been determined by
112 merging faces of that character, that face is `realized'. The
113 realization process maps face attributes to what is physically
114 available on the system where Emacs runs. The result is a
115 `realized face' in the form of a struct face which is stored in the
116 face cache of the frame on which it was realized.
118 Face realization is done in the context of the character to display
119 because different fonts may be used for different characters. In
120 other words, for characters that have different font
121 specifications, different realized faces are needed to display
124 Font specification is done by fontsets. See the comment in
125 fontset.c for the details. In the current implementation, all ASCII
126 characters share the same font in a fontset.
128 Faces are at first realized for ASCII characters, and, at that
129 time, assigned a specific realized fontset. Hereafter, we call
130 such a face as `ASCII face'. When a face for a multibyte character
131 is realized, it inherits (thus shares) a fontset of an ASCII face
132 that has the same attributes other than font-related ones.
134 Thus, all realized faces have a realized fontset.
139 Unibyte text (i.e. raw 8-bit characters) is displayed with the same
140 font as ASCII characters. That is because it is expected that
141 unibyte text users specify a font that is suitable both for ASCII
142 and raw 8-bit characters.
147 Font selection tries to find the best available matching font for a
148 given (character, face) combination.
150 If the face specifies a fontset name, that fontset determines a
151 pattern for fonts of the given character. If the face specifies a
152 font name or the other font-related attributes, a fontset is
153 realized from the default fontset. In that case, that
154 specification determines a pattern for ASCII characters and the
155 default fontset determines a pattern for multibyte characters.
157 Available fonts on the system on which Emacs runs are then matched
158 against the font pattern. The result of font selection is the best
159 match for the given face attributes in this font list.
161 Font selection can be influenced by the user.
163 1. The user can specify the relative importance he gives the face
164 attributes width, height, weight, and slant by setting
165 face-font-selection-order (faces.el) to a list of face attribute
166 names. The default is '(:width :height :weight :slant), and means
167 that font selection first tries to find a good match for the font
168 width specified by a face, then---within fonts with that
169 width---tries to find a best match for the specified font height,
172 2. Setting face-font-family-alternatives allows the user to
173 specify alternative font families to try if a family specified by a
176 3. Setting face-font-registry-alternatives allows the user to
177 specify all alternative font registries to try for a face
178 specifying a registry.
180 4. Setting face-ignored-fonts allows the user to ignore specific
184 Character composition.
186 Usually, the realization process is already finished when Emacs
187 actually reflects the desired glyph matrix on the screen. However,
188 on displaying a composition (sequence of characters to be composed
189 on the screen), a suitable font for the components of the
190 composition is selected and realized while drawing them on the
191 screen, i.e. the realization process is delayed but in principle
195 Initialization of basic faces.
197 The faces `default', `modeline' are considered `basic faces'.
198 When redisplay happens the first time for a newly created frame,
199 basic faces are realized for CHARSET_ASCII. Frame parameters are
200 used to fill in unspecified attributes of the default face. */
203 #include "sysstdio.h"
204 #include <sys/types.h>
205 #include <sys/stat.h>
208 #include "character.h"
210 #include "keyboard.h"
212 #include "termhooks.h"
216 #include <Xm/XmStrDefs.h>
217 #endif /* USE_MOTIF */
223 #ifdef HAVE_WINDOW_SYSTEM
227 #define x_display_info w32_display_info
228 #define GCGraphicsExposures 0
229 #endif /* HAVE_NTGUI */
232 #define GCGraphicsExposures 0
234 #endif /* HAVE_WINDOW_SYSTEM */
237 #include "dispextern.h"
238 #include "blockinput.h"
240 #include "intervals.h"
241 #include "termchar.h"
245 #ifdef HAVE_X_WINDOWS
247 /* Compensate for a bug in Xos.h on some systems, on which it requires
248 time.h. On some such systems, Xos.h tries to redefine struct
249 timeval and struct timezone if USG is #defined while it is
252 #ifdef XOS_NEEDS_TIME_H
258 #if defined USG || defined __TIMEVAL__ /* Don't warn about unused macros. */
260 #else /* not XOS_NEEDS_TIME_H */
262 #endif /* not XOS_NEEDS_TIME_H */
264 #endif /* HAVE_X_WINDOWS */
268 /* Non-zero if face attribute ATTR is unspecified. */
270 #define UNSPECIFIEDP(ATTR) EQ ((ATTR), Qunspecified)
272 /* Non-zero if face attribute ATTR is `ignore-defface'. */
274 #define IGNORE_DEFFACE_P(ATTR) EQ ((ATTR), QCignore_defface)
276 /* Value is the number of elements of VECTOR. */
278 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
280 /* Size of hash table of realized faces in face caches (should be a
283 #define FACE_CACHE_BUCKETS_SIZE 1001
285 /* Keyword symbols used for face attribute names. */
287 Lisp_Object QCfamily
, QCheight
, QCweight
, QCslant
;
288 static Lisp_Object QCunderline
;
289 static Lisp_Object QCinverse_video
, QCstipple
;
290 Lisp_Object QCforeground
, QCbackground
;
292 static Lisp_Object QCfont
, QCbold
, QCitalic
;
293 static Lisp_Object QCreverse_video
;
294 static Lisp_Object QCoverline
, QCstrike_through
, QCbox
, QCinherit
;
295 static Lisp_Object QCfontset
, QCdistant_foreground
;
297 /* Symbols used for attribute values. */
301 static Lisp_Object Qline
, Qwave
;
302 Lisp_Object Qextra_light
, Qlight
;
303 Lisp_Object Qsemi_light
, Qsemi_bold
, Qextra_bold
, Qultra_bold
;
304 Lisp_Object Qoblique
;
306 static Lisp_Object Qreleased_button
, Qpressed_button
;
307 static Lisp_Object QCstyle
, QCcolor
, QCline_width
;
308 Lisp_Object Qunspecified
; /* used in dosfns.c */
309 static Lisp_Object QCignore_defface
;
311 char unspecified_fg
[] = "unspecified-fg", unspecified_bg
[] = "unspecified-bg";
313 /* The name of the function to call when the background of the frame
314 has changed, frame_set_background_mode. */
316 static Lisp_Object Qframe_set_background_mode
;
318 /* Names of basic faces. */
320 Lisp_Object Qdefault
, Qtool_bar
, Qfringe
;
321 static Lisp_Object Qregion
;
322 Lisp_Object Qheader_line
, Qscroll_bar
, Qcursor
;
323 static Lisp_Object Qborder
, Qmouse
, Qmenu
;
324 Lisp_Object Qmode_line_inactive
;
325 static Lisp_Object Qvertical_border
;
327 /* The symbol `face-alias'. A symbols having that property is an
328 alias for another face. Value of the property is the name of
331 static Lisp_Object Qface_alias
;
333 /* Alist of alternative font families. Each element is of the form
334 (FAMILY FAMILY1 FAMILY2 ...). If fonts of FAMILY can't be loaded,
335 try FAMILY1, then FAMILY2, ... */
337 Lisp_Object Vface_alternative_font_family_alist
;
339 /* Alist of alternative font registries. Each element is of the form
340 (REGISTRY REGISTRY1 REGISTRY2...). If fonts of REGISTRY can't be
341 loaded, try REGISTRY1, then REGISTRY2, ... */
343 Lisp_Object Vface_alternative_font_registry_alist
;
345 /* Allowed scalable fonts. A value of nil means don't allow any
346 scalable fonts. A value of t means allow the use of any scalable
347 font. Otherwise, value must be a list of regular expressions. A
348 font may be scaled if its name matches a regular expression in the
351 static Lisp_Object Qscalable_fonts_allowed
;
353 /* The symbols `foreground-color' and `background-color' which can be
354 used as part of a `face' property. This is for compatibility with
357 Lisp_Object Qforeground_color
, Qbackground_color
;
359 /* The symbols `face' and `mouse-face' used as text properties. */
363 /* Property for basic faces which other faces cannot inherit. */
365 static Lisp_Object Qface_no_inherit
;
367 /* Error symbol for wrong_type_argument in load_pixmap. */
369 static Lisp_Object Qbitmap_spec_p
;
371 /* The next ID to assign to Lisp faces. */
373 static int next_lface_id
;
375 /* A vector mapping Lisp face Id's to face names. */
377 static Lisp_Object
*lface_id_to_name
;
378 static ptrdiff_t lface_id_to_name_size
;
380 /* TTY color-related functions (defined in tty-colors.el). */
382 static Lisp_Object Qtty_color_desc
, Qtty_color_by_index
, Qtty_color_standard_values
;
384 /* The name of the function used to compute colors on TTYs. */
386 static Lisp_Object Qtty_color_alist
;
388 #ifdef HAVE_WINDOW_SYSTEM
390 /* Counter for calls to clear_face_cache. If this counter reaches
391 CLEAR_FONT_TABLE_COUNT, and a frame has more than
392 CLEAR_FONT_TABLE_NFONTS load, unused fonts are freed. */
394 static int clear_font_table_count
;
395 #define CLEAR_FONT_TABLE_COUNT 100
396 #define CLEAR_FONT_TABLE_NFONTS 10
398 #endif /* HAVE_WINDOW_SYSTEM */
400 /* Non-zero means face attributes have been changed since the last
401 redisplay. Used in redisplay_internal. */
403 int face_change_count
;
405 /* Non-zero means don't display bold text if a face's foreground
406 and background colors are the inverse of the default colors of the
407 display. This is a kluge to suppress `bold black' foreground text
408 which is hard to read on an LCD monitor. */
410 static int tty_suppress_bold_inverse_default_colors_p
;
412 /* A list of the form `((x . y))' used to avoid consing in
413 Finternal_set_lisp_face_attribute. */
415 static Lisp_Object Vparam_value_alist
;
417 /* The total number of colors currently allocated. */
420 static int ncolors_allocated
;
421 static int npixmaps_allocated
;
425 /* Non-zero means the definition of the `menu' face for new frames has
428 static int menu_face_changed_default
;
430 struct named_merge_point
;
432 static struct face
*realize_face (struct face_cache
*, Lisp_Object
*,
434 static struct face
*realize_x_face (struct face_cache
*, Lisp_Object
*);
435 static struct face
*realize_tty_face (struct face_cache
*, Lisp_Object
*);
436 static bool realize_basic_faces (struct frame
*);
437 static bool realize_default_face (struct frame
*);
438 static void realize_named_face (struct frame
*, Lisp_Object
, int);
439 static struct face_cache
*make_face_cache (struct frame
*);
440 static void free_face_cache (struct face_cache
*);
441 static int merge_face_ref (struct frame
*, Lisp_Object
, Lisp_Object
*,
442 int, struct named_merge_point
*);
443 static int color_distance (XColor
*x
, XColor
*y
);
445 #ifdef HAVE_WINDOW_SYSTEM
446 static void set_font_frame_param (Lisp_Object
, Lisp_Object
);
447 static void clear_face_gcs (struct face_cache
*);
448 static struct face
*realize_non_ascii_face (struct frame
*, Lisp_Object
,
450 #endif /* HAVE_WINDOW_SYSTEM */
452 /***********************************************************************
454 ***********************************************************************/
456 #ifdef HAVE_X_WINDOWS
458 #ifdef DEBUG_X_COLORS
460 /* The following is a poor mans infrastructure for debugging X color
461 allocation problems on displays with PseudoColor-8. Some X servers
462 like 3.3.5 XF86_SVGA with Matrox cards apparently don't implement
463 color reference counts completely so that they don't signal an
464 error when a color is freed whose reference count is already 0.
465 Other X servers do. To help me debug this, the following code
466 implements a simple reference counting schema of its own, for a
467 single display/screen. --gerd. */
469 /* Reference counts for pixel colors. */
471 int color_count
[256];
473 /* Register color PIXEL as allocated. */
476 register_color (unsigned long pixel
)
478 eassert (pixel
< 256);
479 ++color_count
[pixel
];
483 /* Register color PIXEL as deallocated. */
486 unregister_color (unsigned long pixel
)
488 eassert (pixel
< 256);
489 if (color_count
[pixel
] > 0)
490 --color_count
[pixel
];
496 /* Register N colors from PIXELS as deallocated. */
499 unregister_colors (unsigned long *pixels
, int n
)
502 for (i
= 0; i
< n
; ++i
)
503 unregister_color (pixels
[i
]);
507 DEFUN ("dump-colors", Fdump_colors
, Sdump_colors
, 0, 0, 0,
508 doc
: /* Dump currently allocated colors to stderr. */)
513 fputc ('\n', stderr
);
515 for (i
= n
= 0; i
< sizeof color_count
/ sizeof color_count
[0]; ++i
)
518 fprintf (stderr
, "%3d: %5d", i
, color_count
[i
]);
521 fputc ('\n', stderr
);
523 fputc ('\t', stderr
);
527 fputc ('\n', stderr
);
531 #endif /* DEBUG_X_COLORS */
534 /* Free colors used on frame F. PIXELS is an array of NPIXELS pixel
535 color values. Interrupt input must be blocked when this function
539 x_free_colors (struct frame
*f
, unsigned long *pixels
, int npixels
)
541 int class = FRAME_DISPLAY_INFO (f
)->visual
->class;
543 /* If display has an immutable color map, freeing colors is not
544 necessary and some servers don't allow it. So don't do it. */
545 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
547 #ifdef DEBUG_X_COLORS
548 unregister_colors (pixels
, npixels
);
550 XFreeColors (FRAME_X_DISPLAY (f
), FRAME_X_COLORMAP (f
),
558 /* Free colors used on frame F. PIXELS is an array of NPIXELS pixel
559 color values. Interrupt input must be blocked when this function
563 x_free_dpy_colors (Display
*dpy
, Screen
*screen
, Colormap cmap
,
564 unsigned long *pixels
, int npixels
)
566 struct x_display_info
*dpyinfo
= x_display_info_for_display (dpy
);
567 int class = dpyinfo
->visual
->class;
569 /* If display has an immutable color map, freeing colors is not
570 necessary and some servers don't allow it. So don't do it. */
571 if (class != StaticColor
&& class != StaticGray
&& class != TrueColor
)
573 #ifdef DEBUG_X_COLORS
574 unregister_colors (pixels
, npixels
);
576 XFreeColors (dpy
, cmap
, pixels
, npixels
, 0);
579 #endif /* USE_X_TOOLKIT */
581 /* Create and return a GC for use on frame F. GC values and mask
582 are given by XGCV and MASK. */
585 x_create_gc (struct frame
*f
, unsigned long mask
, XGCValues
*xgcv
)
589 gc
= XCreateGC (FRAME_X_DISPLAY (f
), FRAME_X_WINDOW (f
), mask
, xgcv
);
596 /* Free GC which was used on frame F. */
599 x_free_gc (struct frame
*f
, GC gc
)
601 eassert (input_blocked_p ());
602 IF_DEBUG ((--ngcs
, eassert (ngcs
>= 0)));
603 XFreeGC (FRAME_X_DISPLAY (f
), gc
);
606 #endif /* HAVE_X_WINDOWS */
609 /* W32 emulation of GCs */
612 x_create_gc (struct frame
*f
, unsigned long mask
, XGCValues
*xgcv
)
616 gc
= XCreateGC (NULL
, FRAME_W32_WINDOW (f
), mask
, xgcv
);
623 /* Free GC which was used on frame F. */
626 x_free_gc (struct frame
*f
, GC gc
)
628 IF_DEBUG ((--ngcs
, eassert (ngcs
>= 0)));
632 #endif /* HAVE_NTGUI */
635 /* NS emulation of GCs */
638 x_create_gc (struct frame
*f
,
642 GC gc
= xmalloc (sizeof *gc
);
648 x_free_gc (struct frame
*f
, GC gc
)
654 /***********************************************************************
656 ***********************************************************************/
658 /* Initialize face cache and basic faces for frame F. */
661 init_frame_faces (struct frame
*f
)
663 /* Make a face cache, if F doesn't have one. */
664 if (FRAME_FACE_CACHE (f
) == NULL
)
665 FRAME_FACE_CACHE (f
) = make_face_cache (f
);
667 #ifdef HAVE_WINDOW_SYSTEM
668 /* Make the image cache. */
669 if (FRAME_WINDOW_P (f
))
671 /* We initialize the image cache when creating the first frame
672 on a terminal, and not during terminal creation. This way,
673 `x-open-connection' on a tty won't create an image cache. */
674 if (FRAME_IMAGE_CACHE (f
) == NULL
)
675 FRAME_IMAGE_CACHE (f
) = make_image_cache ();
676 ++FRAME_IMAGE_CACHE (f
)->refcount
;
678 #endif /* HAVE_WINDOW_SYSTEM */
680 /* Realize basic faces. Must have enough information in frame
681 parameters to realize basic faces at this point. */
682 #ifdef HAVE_X_WINDOWS
683 if (!FRAME_X_P (f
) || FRAME_X_WINDOW (f
))
686 if (!FRAME_WINDOW_P (f
) || FRAME_W32_WINDOW (f
))
689 if (!FRAME_NS_P (f
) || FRAME_NS_WINDOW (f
))
691 if (!realize_basic_faces (f
))
696 /* Free face cache of frame F. Called from delete_frame. */
699 free_frame_faces (struct frame
*f
)
701 struct face_cache
*face_cache
= FRAME_FACE_CACHE (f
);
705 free_face_cache (face_cache
);
706 FRAME_FACE_CACHE (f
) = NULL
;
709 #ifdef HAVE_WINDOW_SYSTEM
710 if (FRAME_WINDOW_P (f
))
712 struct image_cache
*image_cache
= FRAME_IMAGE_CACHE (f
);
715 --image_cache
->refcount
;
716 if (image_cache
->refcount
== 0)
717 free_image_cache (f
);
720 #endif /* HAVE_WINDOW_SYSTEM */
724 /* Clear face caches, and recompute basic faces for frame F. Call
725 this after changing frame parameters on which those faces depend,
726 or when realized faces have been freed due to changing attributes
730 recompute_basic_faces (struct frame
*f
)
732 if (FRAME_FACE_CACHE (f
))
734 clear_face_cache (0);
735 if (!realize_basic_faces (f
))
741 /* Clear the face caches of all frames. CLEAR_FONTS_P non-zero means
742 try to free unused fonts, too. */
745 clear_face_cache (int clear_fonts_p
)
747 #ifdef HAVE_WINDOW_SYSTEM
748 Lisp_Object tail
, frame
;
751 || ++clear_font_table_count
== CLEAR_FONT_TABLE_COUNT
)
753 /* From time to time see if we can unload some fonts. This also
754 frees all realized faces on all frames. Fonts needed by
755 faces will be loaded again when faces are realized again. */
756 clear_font_table_count
= 0;
758 FOR_EACH_FRAME (tail
, frame
)
760 struct frame
*f
= XFRAME (frame
);
761 if (FRAME_WINDOW_P (f
)
762 && FRAME_DISPLAY_INFO (f
)->n_fonts
> CLEAR_FONT_TABLE_NFONTS
)
764 clear_font_cache (f
);
765 free_all_realized_faces (frame
);
771 /* Clear GCs of realized faces. */
772 FOR_EACH_FRAME (tail
, frame
)
774 struct frame
*f
= XFRAME (frame
);
775 if (FRAME_WINDOW_P (f
))
776 clear_face_gcs (FRAME_FACE_CACHE (f
));
778 clear_image_caches (Qnil
);
780 #endif /* HAVE_WINDOW_SYSTEM */
784 DEFUN ("clear-face-cache", Fclear_face_cache
, Sclear_face_cache
, 0, 1, 0,
785 doc
: /* Clear face caches on all frames.
786 Optional THOROUGHLY non-nil means try to free unused fonts, too. */)
787 (Lisp_Object thoroughly
)
789 clear_face_cache (!NILP (thoroughly
));
791 ++windows_or_buffers_changed
;
796 /***********************************************************************
798 ***********************************************************************/
800 #ifdef HAVE_WINDOW_SYSTEM
802 DEFUN ("bitmap-spec-p", Fbitmap_spec_p
, Sbitmap_spec_p
, 1, 1, 0,
803 doc
: /* Value is non-nil if OBJECT is a valid bitmap specification.
804 A bitmap specification is either a string, a file name, or a list
805 \(WIDTH HEIGHT DATA) where WIDTH is the pixel width of the bitmap,
806 HEIGHT is its height, and DATA is a string containing the bits of
807 the pixmap. Bits are stored row by row, each row occupies
808 \(WIDTH + 7)/8 bytes. */)
813 if (STRINGP (object
))
814 /* If OBJECT is a string, it's a file name. */
816 else if (CONSP (object
))
818 /* Otherwise OBJECT must be (WIDTH HEIGHT DATA), WIDTH and
819 HEIGHT must be ints > 0, and DATA must be string large
820 enough to hold a bitmap of the specified size. */
821 Lisp_Object width
, height
, data
;
823 height
= width
= data
= Qnil
;
827 width
= XCAR (object
);
828 object
= XCDR (object
);
831 height
= XCAR (object
);
832 object
= XCDR (object
);
834 data
= XCAR (object
);
839 && RANGED_INTEGERP (1, width
, INT_MAX
)
840 && RANGED_INTEGERP (1, height
, INT_MAX
))
842 int bytes_per_row
= ((XINT (width
) + BITS_PER_CHAR
- 1)
844 if (XINT (height
) <= SBYTES (data
) / bytes_per_row
)
849 return pixmap_p
? Qt
: Qnil
;
853 /* Load a bitmap according to NAME (which is either a file name or a
854 pixmap spec) for use on frame F. Value is the bitmap_id (see
855 xfns.c). If NAME is nil, return with a bitmap id of zero. If
856 bitmap cannot be loaded, display a message saying so, and return
860 load_pixmap (struct frame
*f
, Lisp_Object name
)
867 CHECK_TYPE (!NILP (Fbitmap_spec_p (name
)), Qbitmap_spec_p
, name
);
872 /* Decode a bitmap spec into a bitmap. */
877 w
= XINT (Fcar (name
));
878 h
= XINT (Fcar (Fcdr (name
)));
879 bits
= Fcar (Fcdr (Fcdr (name
)));
881 bitmap_id
= x_create_bitmap_from_data (f
, SSDATA (bits
),
886 /* It must be a string -- a file name. */
887 bitmap_id
= x_create_bitmap_from_file (f
, name
);
893 add_to_log ("Invalid or undefined bitmap `%s'", name
, Qnil
);
899 ++npixmaps_allocated
;
906 #endif /* HAVE_WINDOW_SYSTEM */
910 /***********************************************************************
912 ***********************************************************************/
914 #define NEAR_SAME_COLOR_THRESHOLD 30000
916 /* Parse RGB_LIST, and fill in the RGB fields of COLOR.
917 RGB_LIST should contain (at least) 3 lisp integers.
918 Return 0 if there's a problem with RGB_LIST, otherwise return 1. */
921 parse_rgb_list (Lisp_Object rgb_list
, XColor
*color
)
923 #define PARSE_RGB_LIST_FIELD(field) \
924 if (CONSP (rgb_list) && INTEGERP (XCAR (rgb_list))) \
926 color->field = XINT (XCAR (rgb_list)); \
927 rgb_list = XCDR (rgb_list); \
932 PARSE_RGB_LIST_FIELD (red
);
933 PARSE_RGB_LIST_FIELD (green
);
934 PARSE_RGB_LIST_FIELD (blue
);
940 /* Lookup on frame F the color described by the lisp string COLOR.
941 The resulting tty color is returned in TTY_COLOR; if STD_COLOR is
942 non-zero, then the `standard' definition of the same color is
946 tty_lookup_color (struct frame
*f
, Lisp_Object color
, XColor
*tty_color
,
949 Lisp_Object frame
, color_desc
;
951 if (!STRINGP (color
) || NILP (Ffboundp (Qtty_color_desc
)))
954 XSETFRAME (frame
, f
);
956 color_desc
= call2 (Qtty_color_desc
, color
, frame
);
957 if (CONSP (color_desc
) && CONSP (XCDR (color_desc
)))
961 if (! INTEGERP (XCAR (XCDR (color_desc
))))
964 tty_color
->pixel
= XINT (XCAR (XCDR (color_desc
)));
966 rgb
= XCDR (XCDR (color_desc
));
967 if (! parse_rgb_list (rgb
, tty_color
))
970 /* Should we fill in STD_COLOR too? */
973 /* Default STD_COLOR to the same as TTY_COLOR. */
974 *std_color
= *tty_color
;
976 /* Do a quick check to see if the returned descriptor is
977 actually _exactly_ equal to COLOR, otherwise we have to
978 lookup STD_COLOR separately. If it's impossible to lookup
979 a standard color, we just give up and use TTY_COLOR. */
980 if ((!STRINGP (XCAR (color_desc
))
981 || NILP (Fstring_equal (color
, XCAR (color_desc
))))
982 && !NILP (Ffboundp (Qtty_color_standard_values
)))
984 /* Look up STD_COLOR separately. */
985 rgb
= call1 (Qtty_color_standard_values
, color
);
986 if (! parse_rgb_list (rgb
, std_color
))
993 else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist"))))
994 /* We were called early during startup, and the colors are not
995 yet set up in tty-defined-color-alist. Don't return a failure
996 indication, since this produces the annoying "Unable to
997 load color" messages in the *Messages* buffer. */
1000 /* tty-color-desc seems to have returned a bad value. */
1004 /* A version of defined_color for non-X frames. */
1007 tty_defined_color (struct frame
*f
, const char *color_name
,
1008 XColor
*color_def
, bool alloc
)
1013 color_def
->pixel
= FACE_TTY_DEFAULT_COLOR
;
1015 color_def
->blue
= 0;
1016 color_def
->green
= 0;
1019 status
= tty_lookup_color (f
, build_string (color_name
), color_def
, NULL
);
1021 if (color_def
->pixel
== FACE_TTY_DEFAULT_COLOR
&& *color_name
)
1023 if (strcmp (color_name
, "unspecified-fg") == 0)
1024 color_def
->pixel
= FACE_TTY_DEFAULT_FG_COLOR
;
1025 else if (strcmp (color_name
, "unspecified-bg") == 0)
1026 color_def
->pixel
= FACE_TTY_DEFAULT_BG_COLOR
;
1029 if (color_def
->pixel
!= FACE_TTY_DEFAULT_COLOR
)
1036 /* Decide if color named COLOR_NAME is valid for the display
1037 associated with the frame F; if so, return the rgb values in
1038 COLOR_DEF. If ALLOC, allocate a new colormap cell.
1040 This does the right thing for any type of frame. */
1043 defined_color (struct frame
*f
, const char *color_name
, XColor
*color_def
,
1046 if (!FRAME_WINDOW_P (f
))
1047 return tty_defined_color (f
, color_name
, color_def
, alloc
);
1048 #ifdef HAVE_X_WINDOWS
1049 else if (FRAME_X_P (f
))
1050 return x_defined_color (f
, color_name
, color_def
, alloc
);
1053 else if (FRAME_W32_P (f
))
1054 return w32_defined_color (f
, color_name
, color_def
, alloc
);
1057 else if (FRAME_NS_P (f
))
1058 return ns_defined_color (f
, color_name
, color_def
, alloc
, 1);
1065 /* Given the index IDX of a tty color on frame F, return its name, a
1069 tty_color_name (struct frame
*f
, int idx
)
1071 if (idx
>= 0 && !NILP (Ffboundp (Qtty_color_by_index
)))
1074 Lisp_Object coldesc
;
1076 XSETFRAME (frame
, f
);
1077 coldesc
= call2 (Qtty_color_by_index
, make_number (idx
), frame
);
1079 if (!NILP (coldesc
))
1080 return XCAR (coldesc
);
1083 /* We can have an MSDOG frame under -nw for a short window of
1084 opportunity before internal_terminal_init is called. DTRT. */
1085 if (FRAME_MSDOS_P (f
) && !inhibit_window_system
)
1086 return msdos_stdcolor_name (idx
);
1089 if (idx
== FACE_TTY_DEFAULT_FG_COLOR
)
1090 return build_string (unspecified_fg
);
1091 if (idx
== FACE_TTY_DEFAULT_BG_COLOR
)
1092 return build_string (unspecified_bg
);
1094 return Qunspecified
;
1098 /* Return non-zero if COLOR_NAME is a shade of gray (or white or
1101 The criterion implemented here is not a terribly sophisticated one. */
1104 face_color_gray_p (struct frame
*f
, const char *color_name
)
1109 if (defined_color (f
, color_name
, &color
, 0))
1110 gray_p
= (/* Any color sufficiently close to black counts as gray. */
1111 (color
.red
< 5000 && color
.green
< 5000 && color
.blue
< 5000)
1113 ((eabs (color
.red
- color
.green
)
1114 < max (color
.red
, color
.green
) / 20)
1115 && (eabs (color
.green
- color
.blue
)
1116 < max (color
.green
, color
.blue
) / 20)
1117 && (eabs (color
.blue
- color
.red
)
1118 < max (color
.blue
, color
.red
) / 20)));
1126 /* Return non-zero if color COLOR_NAME can be displayed on frame F.
1127 BACKGROUND_P non-zero means the color will be used as background
1131 face_color_supported_p (struct frame
*f
, const char *color_name
,
1137 XSETFRAME (frame
, f
);
1139 #ifdef HAVE_WINDOW_SYSTEM
1141 ? (!NILP (Fxw_display_color_p (frame
))
1142 || xstrcasecmp (color_name
, "black") == 0
1143 || xstrcasecmp (color_name
, "white") == 0
1145 && face_color_gray_p (f
, color_name
))
1146 || (!NILP (Fx_display_grayscale_p (frame
))
1147 && face_color_gray_p (f
, color_name
)))
1150 tty_defined_color (f
, color_name
, ¬_used
, 0);
1154 DEFUN ("color-gray-p", Fcolor_gray_p
, Scolor_gray_p
, 1, 2, 0,
1155 doc
: /* Return non-nil if COLOR is a shade of gray (or white or black).
1156 FRAME specifies the frame and thus the display for interpreting COLOR.
1157 If FRAME is nil or omitted, use the selected frame. */)
1158 (Lisp_Object color
, Lisp_Object frame
)
1160 CHECK_STRING (color
);
1161 return (face_color_gray_p (decode_any_frame (frame
), SSDATA (color
))
1166 DEFUN ("color-supported-p", Fcolor_supported_p
,
1167 Scolor_supported_p
, 1, 3, 0,
1168 doc
: /* Return non-nil if COLOR can be displayed on FRAME.
1169 BACKGROUND-P non-nil means COLOR is used as a background.
1170 Otherwise, this function tells whether it can be used as a foreground.
1171 If FRAME is nil or omitted, use the selected frame.
1172 COLOR must be a valid color name. */)
1173 (Lisp_Object color
, Lisp_Object frame
, Lisp_Object background_p
)
1175 CHECK_STRING (color
);
1176 return (face_color_supported_p (decode_any_frame (frame
),
1177 SSDATA (color
), !NILP (background_p
))
1182 static unsigned long
1183 load_color2 (struct frame
*f
, struct face
*face
, Lisp_Object name
,
1184 enum lface_attribute_index target_index
, XColor
*color
)
1186 eassert (STRINGP (name
));
1187 eassert (target_index
== LFACE_FOREGROUND_INDEX
1188 || target_index
== LFACE_BACKGROUND_INDEX
1189 || target_index
== LFACE_UNDERLINE_INDEX
1190 || target_index
== LFACE_OVERLINE_INDEX
1191 || target_index
== LFACE_STRIKE_THROUGH_INDEX
1192 || target_index
== LFACE_BOX_INDEX
);
1194 /* if the color map is full, defined_color will return a best match
1195 to the values in an existing cell. */
1196 if (!defined_color (f
, SSDATA (name
), color
, 1))
1198 add_to_log ("Unable to load color \"%s\"", name
, Qnil
);
1200 switch (target_index
)
1202 case LFACE_FOREGROUND_INDEX
:
1203 face
->foreground_defaulted_p
= 1;
1204 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
1207 case LFACE_BACKGROUND_INDEX
:
1208 face
->background_defaulted_p
= 1;
1209 color
->pixel
= FRAME_BACKGROUND_PIXEL (f
);
1212 case LFACE_UNDERLINE_INDEX
:
1213 face
->underline_defaulted_p
= 1;
1214 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
1217 case LFACE_OVERLINE_INDEX
:
1218 face
->overline_color_defaulted_p
= 1;
1219 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
1222 case LFACE_STRIKE_THROUGH_INDEX
:
1223 face
->strike_through_color_defaulted_p
= 1;
1224 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
1227 case LFACE_BOX_INDEX
:
1228 face
->box_color_defaulted_p
= 1;
1229 color
->pixel
= FRAME_FOREGROUND_PIXEL (f
);
1238 ++ncolors_allocated
;
1241 return color
->pixel
;
1244 /* Load color with name NAME for use by face FACE on frame F.
1245 TARGET_INDEX must be one of LFACE_FOREGROUND_INDEX,
1246 LFACE_BACKGROUND_INDEX, LFACE_UNDERLINE_INDEX, LFACE_OVERLINE_INDEX,
1247 LFACE_STRIKE_THROUGH_INDEX, or LFACE_BOX_INDEX. Value is the
1248 pixel color. If color cannot be loaded, display a message, and
1249 return the foreground, background or underline color of F, but
1250 record that fact in flags of the face so that we don't try to free
1257 load_color (struct frame
*f
, struct face
*face
, Lisp_Object name
,
1258 enum lface_attribute_index target_index
)
1261 return load_color2 (f
, face
, name
, target_index
, &color
);
1265 #ifdef HAVE_WINDOW_SYSTEM
1267 /* Load colors for face FACE which is used on frame F. Colors are
1268 specified by slots LFACE_BACKGROUND_INDEX and LFACE_FOREGROUND_INDEX
1269 of ATTRS. If the background color specified is not supported on F,
1270 try to emulate gray colors with a stipple from Vface_default_stipple. */
1273 load_face_colors (struct frame
*f
, struct face
*face
,
1274 Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
1276 Lisp_Object fg
, bg
, dfg
;
1279 bg
= attrs
[LFACE_BACKGROUND_INDEX
];
1280 fg
= attrs
[LFACE_FOREGROUND_INDEX
];
1282 /* Swap colors if face is inverse-video. */
1283 if (EQ (attrs
[LFACE_INVERSE_INDEX
], Qt
))
1291 /* Check for support for foreground, not for background because
1292 face_color_supported_p is smart enough to know that grays are
1293 "supported" as background because we are supposed to use stipple
1295 if (!face_color_supported_p (f
, SSDATA (bg
), 0)
1296 && !NILP (Fbitmap_spec_p (Vface_default_stipple
)))
1298 x_destroy_bitmap (f
, face
->stipple
);
1299 face
->stipple
= load_pixmap (f
, Vface_default_stipple
);
1302 face
->background
= load_color2 (f
, face
, bg
, LFACE_BACKGROUND_INDEX
, &xbg
);
1303 face
->foreground
= load_color2 (f
, face
, fg
, LFACE_FOREGROUND_INDEX
, &xfg
);
1305 dfg
= attrs
[LFACE_DISTANT_FOREGROUND_INDEX
];
1306 if (!NILP (dfg
) && !UNSPECIFIEDP (dfg
)
1307 && color_distance (&xbg
, &xfg
) < NEAR_SAME_COLOR_THRESHOLD
)
1309 if (EQ (attrs
[LFACE_INVERSE_INDEX
], Qt
))
1310 face
->background
= load_color (f
, face
, dfg
, LFACE_BACKGROUND_INDEX
);
1312 face
->foreground
= load_color (f
, face
, dfg
, LFACE_FOREGROUND_INDEX
);
1316 #ifdef HAVE_X_WINDOWS
1318 /* Free color PIXEL on frame F. */
1321 unload_color (struct frame
*f
, unsigned long pixel
)
1326 x_free_colors (f
, &pixel
, 1);
1331 /* Free colors allocated for FACE. */
1334 free_face_colors (struct frame
*f
, struct face
*face
)
1336 /* PENDING(NS): need to do something here? */
1338 if (face
->colors_copied_bitwise_p
)
1343 if (!face
->foreground_defaulted_p
)
1345 x_free_colors (f
, &face
->foreground
, 1);
1346 IF_DEBUG (--ncolors_allocated
);
1349 if (!face
->background_defaulted_p
)
1351 x_free_colors (f
, &face
->background
, 1);
1352 IF_DEBUG (--ncolors_allocated
);
1355 if (face
->underline_p
1356 && !face
->underline_defaulted_p
)
1358 x_free_colors (f
, &face
->underline_color
, 1);
1359 IF_DEBUG (--ncolors_allocated
);
1362 if (face
->overline_p
1363 && !face
->overline_color_defaulted_p
)
1365 x_free_colors (f
, &face
->overline_color
, 1);
1366 IF_DEBUG (--ncolors_allocated
);
1369 if (face
->strike_through_p
1370 && !face
->strike_through_color_defaulted_p
)
1372 x_free_colors (f
, &face
->strike_through_color
, 1);
1373 IF_DEBUG (--ncolors_allocated
);
1376 if (face
->box
!= FACE_NO_BOX
1377 && !face
->box_color_defaulted_p
)
1379 x_free_colors (f
, &face
->box_color
, 1);
1380 IF_DEBUG (--ncolors_allocated
);
1386 #endif /* HAVE_X_WINDOWS */
1388 #endif /* HAVE_WINDOW_SYSTEM */
1392 /***********************************************************************
1394 ***********************************************************************/
1396 /* An enumerator for each field of an XLFD font name. */
1417 /* An enumerator for each possible slant value of a font. Taken from
1418 the XLFD specification. */
1426 XLFD_SLANT_REVERSE_ITALIC
,
1427 XLFD_SLANT_REVERSE_OBLIQUE
,
1431 /* Relative font weight according to XLFD documentation. */
1435 XLFD_WEIGHT_UNKNOWN
,
1436 XLFD_WEIGHT_ULTRA_LIGHT
, /* 10 */
1437 XLFD_WEIGHT_EXTRA_LIGHT
, /* 20 */
1438 XLFD_WEIGHT_LIGHT
, /* 30 */
1439 XLFD_WEIGHT_SEMI_LIGHT
, /* 40: SemiLight, Book, ... */
1440 XLFD_WEIGHT_MEDIUM
, /* 50: Medium, Normal, Regular, ... */
1441 XLFD_WEIGHT_SEMI_BOLD
, /* 60: SemiBold, DemiBold, ... */
1442 XLFD_WEIGHT_BOLD
, /* 70: Bold, ... */
1443 XLFD_WEIGHT_EXTRA_BOLD
, /* 80: ExtraBold, Heavy, ... */
1444 XLFD_WEIGHT_ULTRA_BOLD
/* 90: UltraBold, Black, ... */
1447 /* Relative proportionate width. */
1451 XLFD_SWIDTH_UNKNOWN
,
1452 XLFD_SWIDTH_ULTRA_CONDENSED
, /* 10 */
1453 XLFD_SWIDTH_EXTRA_CONDENSED
, /* 20 */
1454 XLFD_SWIDTH_CONDENSED
, /* 30: Condensed, Narrow, Compressed, ... */
1455 XLFD_SWIDTH_SEMI_CONDENSED
, /* 40: semicondensed */
1456 XLFD_SWIDTH_MEDIUM
, /* 50: Medium, Normal, Regular, ... */
1457 XLFD_SWIDTH_SEMI_EXPANDED
, /* 60: SemiExpanded, DemiExpanded, ... */
1458 XLFD_SWIDTH_EXPANDED
, /* 70: Expanded... */
1459 XLFD_SWIDTH_EXTRA_EXPANDED
, /* 80: ExtraExpanded, Wide... */
1460 XLFD_SWIDTH_ULTRA_EXPANDED
/* 90: UltraExpanded... */
1463 /* Order by which font selection chooses fonts. The default values
1464 mean `first, find a best match for the font width, then for the
1465 font height, then for weight, then for slant.' This variable can be
1466 set via set-face-font-sort-order. */
1468 static int font_sort_order
[4];
1470 #ifdef HAVE_WINDOW_SYSTEM
1472 static enum font_property_index font_props_for_sorting
[FONT_SIZE_INDEX
];
1475 compare_fonts_by_sort_order (const void *v1
, const void *v2
)
1477 Lisp_Object
const *p1
= v1
;
1478 Lisp_Object
const *p2
= v2
;
1479 Lisp_Object font1
= *p1
;
1480 Lisp_Object font2
= *p2
;
1483 for (i
= 0; i
< FONT_SIZE_INDEX
; i
++)
1485 enum font_property_index idx
= font_props_for_sorting
[i
];
1486 Lisp_Object val1
= AREF (font1
, idx
), val2
= AREF (font2
, idx
);
1489 if (idx
<= FONT_REGISTRY_INDEX
)
1492 result
= STRINGP (val2
) ? strcmp (SSDATA (val1
), SSDATA (val2
)) : -1;
1494 result
= STRINGP (val2
) ? 1 : 0;
1498 if (INTEGERP (val1
))
1499 result
= (INTEGERP (val2
) && XINT (val1
) >= XINT (val2
)
1500 ? XINT (val1
) > XINT (val2
)
1503 result
= INTEGERP (val2
) ? 1 : 0;
1511 DEFUN ("x-family-fonts", Fx_family_fonts
, Sx_family_fonts
, 0, 2, 0,
1512 doc
: /* Return a list of available fonts of family FAMILY on FRAME.
1513 If FAMILY is omitted or nil, list all families.
1514 Otherwise, FAMILY must be a string, possibly containing wildcards
1516 If FRAME is omitted or nil, use the selected frame.
1517 Each element of the result is a vector [FAMILY WIDTH POINT-SIZE WEIGHT
1518 SLANT FIXED-P FULL REGISTRY-AND-ENCODING].
1519 FAMILY is the font family name. POINT-SIZE is the size of the
1520 font in 1/10 pt. WIDTH, WEIGHT, and SLANT are symbols describing the
1521 width, weight and slant of the font. These symbols are the same as for
1522 face attributes. FIXED-P is non-nil if the font is fixed-pitch.
1523 FULL is the full name of the font, and REGISTRY-AND-ENCODING is a string
1524 giving the registry and encoding of the font.
1525 The result list is sorted according to the current setting of
1526 the face font sort order. */)
1527 (Lisp_Object family
, Lisp_Object frame
)
1529 Lisp_Object font_spec
, list
, *drivers
, vec
;
1530 struct frame
*f
= decode_live_frame (frame
);
1531 ptrdiff_t i
, nfonts
;
1536 font_spec
= Ffont_spec (0, NULL
);
1539 CHECK_STRING (family
);
1540 font_parse_family_registry (family
, Qnil
, font_spec
);
1543 list
= font_list_entities (f
, font_spec
);
1547 /* Sort the font entities. */
1548 for (i
= 0; i
< 4; i
++)
1549 switch (font_sort_order
[i
])
1552 font_props_for_sorting
[i
] = FONT_WIDTH_INDEX
; break;
1553 case XLFD_POINT_SIZE
:
1554 font_props_for_sorting
[i
] = FONT_SIZE_INDEX
; break;
1556 font_props_for_sorting
[i
] = FONT_WEIGHT_INDEX
; break;
1558 font_props_for_sorting
[i
] = FONT_SLANT_INDEX
; break;
1560 font_props_for_sorting
[i
++] = FONT_FAMILY_INDEX
;
1561 font_props_for_sorting
[i
++] = FONT_FOUNDRY_INDEX
;
1562 font_props_for_sorting
[i
++] = FONT_ADSTYLE_INDEX
;
1563 font_props_for_sorting
[i
++] = FONT_REGISTRY_INDEX
;
1565 ndrivers
= XINT (Flength (list
));
1566 SAFE_ALLOCA_LISP (drivers
, ndrivers
);
1567 for (i
= 0; i
< ndrivers
; i
++, list
= XCDR (list
))
1568 drivers
[i
] = XCAR (list
);
1569 vec
= Fvconcat (ndrivers
, drivers
);
1570 nfonts
= ASIZE (vec
);
1572 qsort (XVECTOR (vec
)->contents
, nfonts
, word_size
,
1573 compare_fonts_by_sort_order
);
1576 for (i
= nfonts
- 1; i
>= 0; --i
)
1578 Lisp_Object font
= AREF (vec
, i
);
1579 Lisp_Object v
= make_uninit_vector (8);
1581 Lisp_Object spacing
;
1583 ASET (v
, 0, AREF (font
, FONT_FAMILY_INDEX
));
1584 ASET (v
, 1, FONT_WIDTH_SYMBOLIC (font
));
1585 point
= PIXEL_TO_POINT (XINT (AREF (font
, FONT_SIZE_INDEX
)) * 10,
1587 ASET (v
, 2, make_number (point
));
1588 ASET (v
, 3, FONT_WEIGHT_SYMBOLIC (font
));
1589 ASET (v
, 4, FONT_SLANT_SYMBOLIC (font
));
1590 spacing
= Ffont_get (font
, QCspacing
);
1591 ASET (v
, 5, (NILP (spacing
) || EQ (spacing
, Qp
)) ? Qnil
: Qt
);
1592 ASET (v
, 6, Ffont_xlfd_name (font
, Qnil
));
1593 ASET (v
, 7, AREF (font
, FONT_REGISTRY_INDEX
));
1595 result
= Fcons (v
, result
);
1602 DEFUN ("x-list-fonts", Fx_list_fonts
, Sx_list_fonts
, 1, 5, 0,
1603 doc
: /* Return a list of the names of available fonts matching PATTERN.
1604 If optional arguments FACE and FRAME are specified, return only fonts
1605 the same size as FACE on FRAME.
1607 PATTERN should be a string containing a font name in the XLFD,
1608 Fontconfig, or GTK format. A font name given in the XLFD format may
1609 contain wildcard characters:
1610 the * character matches any substring, and
1611 the ? character matches any single character.
1612 PATTERN is case-insensitive.
1614 The return value is a list of strings, suitable as arguments to
1617 Fonts Emacs can't use may or may not be excluded
1618 even if they match PATTERN and FACE.
1619 The optional fourth argument MAXIMUM sets a limit on how many
1620 fonts to match. The first MAXIMUM fonts are reported.
1621 The optional fifth argument WIDTH, if specified, is a number of columns
1622 occupied by a character of a font. In that case, return only fonts
1623 the WIDTH times as wide as FACE on FRAME. */)
1624 (Lisp_Object pattern
, Lisp_Object face
, Lisp_Object frame
,
1625 Lisp_Object maximum
, Lisp_Object width
)
1628 int size
, avgwidth
IF_LINT (= 0);
1630 check_window_system (NULL
);
1631 CHECK_STRING (pattern
);
1633 if (! NILP (maximum
))
1634 CHECK_NATNUM (maximum
);
1637 CHECK_NUMBER (width
);
1639 /* We can't simply call decode_window_system_frame because
1640 this function may be called before any frame is created. */
1641 f
= decode_live_frame (frame
);
1642 if (! FRAME_WINDOW_P (f
))
1644 /* Perhaps we have not yet created any frame. */
1650 XSETFRAME (frame
, f
);
1652 /* Determine the width standard for comparison with the fonts we find. */
1658 /* This is of limited utility since it works with character
1659 widths. Keep it for compatibility. --gerd. */
1660 int face_id
= lookup_named_face (f
, face
, 0);
1661 struct face
*width_face
= (face_id
< 0
1663 : FACE_FROM_ID (f
, face_id
));
1665 if (width_face
&& width_face
->font
)
1667 size
= width_face
->font
->pixel_size
;
1668 avgwidth
= width_face
->font
->average_width
;
1672 size
= FRAME_FONT (f
)->pixel_size
;
1673 avgwidth
= FRAME_FONT (f
)->average_width
;
1676 avgwidth
*= XINT (width
);
1680 Lisp_Object font_spec
;
1681 Lisp_Object args
[2], tail
;
1683 font_spec
= font_spec_from_name (pattern
);
1684 if (!FONTP (font_spec
))
1685 signal_error ("Invalid font name", pattern
);
1689 Ffont_put (font_spec
, QCsize
, make_number (size
));
1690 Ffont_put (font_spec
, QCavgwidth
, make_number (avgwidth
));
1692 args
[0] = Flist_fonts (font_spec
, frame
, maximum
, font_spec
);
1693 for (tail
= args
[0]; CONSP (tail
); tail
= XCDR (tail
))
1695 Lisp_Object font_entity
;
1697 font_entity
= XCAR (tail
);
1698 if ((NILP (AREF (font_entity
, FONT_SIZE_INDEX
))
1699 || XINT (AREF (font_entity
, FONT_SIZE_INDEX
)) == 0)
1700 && ! NILP (AREF (font_spec
, FONT_SIZE_INDEX
)))
1702 /* This is a scalable font. For backward compatibility,
1703 we set the specified size. */
1704 font_entity
= copy_font_spec (font_entity
);
1705 ASET (font_entity
, FONT_SIZE_INDEX
,
1706 AREF (font_spec
, FONT_SIZE_INDEX
));
1708 XSETCAR (tail
, Ffont_xlfd_name (font_entity
, Qnil
));
1711 /* We don't have to check fontsets. */
1713 args
[1] = list_fontsets (f
, pattern
, size
);
1714 return Fnconc (2, args
);
1718 #endif /* HAVE_WINDOW_SYSTEM */
1721 /***********************************************************************
1723 ***********************************************************************/
1725 /* Access face attributes of face LFACE, a Lisp vector. */
1727 #define LFACE_FAMILY(LFACE) AREF ((LFACE), LFACE_FAMILY_INDEX)
1728 #define LFACE_FOUNDRY(LFACE) AREF ((LFACE), LFACE_FOUNDRY_INDEX)
1729 #define LFACE_HEIGHT(LFACE) AREF ((LFACE), LFACE_HEIGHT_INDEX)
1730 #define LFACE_WEIGHT(LFACE) AREF ((LFACE), LFACE_WEIGHT_INDEX)
1731 #define LFACE_SLANT(LFACE) AREF ((LFACE), LFACE_SLANT_INDEX)
1732 #define LFACE_UNDERLINE(LFACE) AREF ((LFACE), LFACE_UNDERLINE_INDEX)
1733 #define LFACE_INVERSE(LFACE) AREF ((LFACE), LFACE_INVERSE_INDEX)
1734 #define LFACE_FOREGROUND(LFACE) AREF ((LFACE), LFACE_FOREGROUND_INDEX)
1735 #define LFACE_BACKGROUND(LFACE) AREF ((LFACE), LFACE_BACKGROUND_INDEX)
1736 #define LFACE_STIPPLE(LFACE) AREF ((LFACE), LFACE_STIPPLE_INDEX)
1737 #define LFACE_SWIDTH(LFACE) AREF ((LFACE), LFACE_SWIDTH_INDEX)
1738 #define LFACE_OVERLINE(LFACE) AREF ((LFACE), LFACE_OVERLINE_INDEX)
1739 #define LFACE_STRIKE_THROUGH(LFACE) AREF ((LFACE), LFACE_STRIKE_THROUGH_INDEX)
1740 #define LFACE_BOX(LFACE) AREF ((LFACE), LFACE_BOX_INDEX)
1741 #define LFACE_FONT(LFACE) AREF ((LFACE), LFACE_FONT_INDEX)
1742 #define LFACE_INHERIT(LFACE) AREF ((LFACE), LFACE_INHERIT_INDEX)
1743 #define LFACE_FONTSET(LFACE) AREF ((LFACE), LFACE_FONTSET_INDEX)
1744 #define LFACE_DISTANT_FOREGROUND(LFACE) \
1745 AREF ((LFACE), LFACE_DISTANT_FOREGROUND_INDEX)
1747 /* Non-zero if LFACE is a Lisp face. A Lisp face is a vector of size
1748 LFACE_VECTOR_SIZE which has the symbol `face' in slot 0. */
1750 #define LFACEP(LFACE) \
1752 && ASIZE (LFACE) == LFACE_VECTOR_SIZE \
1753 && EQ (AREF (LFACE, 0), Qface))
1758 /* Check consistency of Lisp face attribute vector ATTRS. */
1761 check_lface_attrs (Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
1763 eassert (UNSPECIFIEDP (attrs
[LFACE_FAMILY_INDEX
])
1764 || IGNORE_DEFFACE_P (attrs
[LFACE_FAMILY_INDEX
])
1765 || STRINGP (attrs
[LFACE_FAMILY_INDEX
]));
1766 eassert (UNSPECIFIEDP (attrs
[LFACE_FOUNDRY_INDEX
])
1767 || IGNORE_DEFFACE_P (attrs
[LFACE_FOUNDRY_INDEX
])
1768 || STRINGP (attrs
[LFACE_FOUNDRY_INDEX
]));
1769 eassert (UNSPECIFIEDP (attrs
[LFACE_SWIDTH_INDEX
])
1770 || IGNORE_DEFFACE_P (attrs
[LFACE_SWIDTH_INDEX
])
1771 || SYMBOLP (attrs
[LFACE_SWIDTH_INDEX
]));
1772 eassert (UNSPECIFIEDP (attrs
[LFACE_HEIGHT_INDEX
])
1773 || IGNORE_DEFFACE_P (attrs
[LFACE_HEIGHT_INDEX
])
1774 || INTEGERP (attrs
[LFACE_HEIGHT_INDEX
])
1775 || FLOATP (attrs
[LFACE_HEIGHT_INDEX
])
1776 || FUNCTIONP (attrs
[LFACE_HEIGHT_INDEX
]));
1777 eassert (UNSPECIFIEDP (attrs
[LFACE_WEIGHT_INDEX
])
1778 || IGNORE_DEFFACE_P (attrs
[LFACE_WEIGHT_INDEX
])
1779 || SYMBOLP (attrs
[LFACE_WEIGHT_INDEX
]));
1780 eassert (UNSPECIFIEDP (attrs
[LFACE_SLANT_INDEX
])
1781 || IGNORE_DEFFACE_P (attrs
[LFACE_SLANT_INDEX
])
1782 || SYMBOLP (attrs
[LFACE_SLANT_INDEX
]));
1783 eassert (UNSPECIFIEDP (attrs
[LFACE_UNDERLINE_INDEX
])
1784 || IGNORE_DEFFACE_P (attrs
[LFACE_UNDERLINE_INDEX
])
1785 || SYMBOLP (attrs
[LFACE_UNDERLINE_INDEX
])
1786 || STRINGP (attrs
[LFACE_UNDERLINE_INDEX
])
1787 || CONSP (attrs
[LFACE_UNDERLINE_INDEX
]));
1788 eassert (UNSPECIFIEDP (attrs
[LFACE_OVERLINE_INDEX
])
1789 || IGNORE_DEFFACE_P (attrs
[LFACE_OVERLINE_INDEX
])
1790 || SYMBOLP (attrs
[LFACE_OVERLINE_INDEX
])
1791 || STRINGP (attrs
[LFACE_OVERLINE_INDEX
]));
1792 eassert (UNSPECIFIEDP (attrs
[LFACE_STRIKE_THROUGH_INDEX
])
1793 || IGNORE_DEFFACE_P (attrs
[LFACE_STRIKE_THROUGH_INDEX
])
1794 || SYMBOLP (attrs
[LFACE_STRIKE_THROUGH_INDEX
])
1795 || STRINGP (attrs
[LFACE_STRIKE_THROUGH_INDEX
]));
1796 eassert (UNSPECIFIEDP (attrs
[LFACE_BOX_INDEX
])
1797 || IGNORE_DEFFACE_P (attrs
[LFACE_BOX_INDEX
])
1798 || SYMBOLP (attrs
[LFACE_BOX_INDEX
])
1799 || STRINGP (attrs
[LFACE_BOX_INDEX
])
1800 || INTEGERP (attrs
[LFACE_BOX_INDEX
])
1801 || CONSP (attrs
[LFACE_BOX_INDEX
]));
1802 eassert (UNSPECIFIEDP (attrs
[LFACE_INVERSE_INDEX
])
1803 || IGNORE_DEFFACE_P (attrs
[LFACE_INVERSE_INDEX
])
1804 || SYMBOLP (attrs
[LFACE_INVERSE_INDEX
]));
1805 eassert (UNSPECIFIEDP (attrs
[LFACE_FOREGROUND_INDEX
])
1806 || IGNORE_DEFFACE_P (attrs
[LFACE_FOREGROUND_INDEX
])
1807 || STRINGP (attrs
[LFACE_FOREGROUND_INDEX
]));
1808 eassert (UNSPECIFIEDP (attrs
[LFACE_DISTANT_FOREGROUND_INDEX
])
1809 || IGNORE_DEFFACE_P (attrs
[LFACE_DISTANT_FOREGROUND_INDEX
])
1810 || STRINGP (attrs
[LFACE_DISTANT_FOREGROUND_INDEX
]));
1811 eassert (UNSPECIFIEDP (attrs
[LFACE_BACKGROUND_INDEX
])
1812 || IGNORE_DEFFACE_P (attrs
[LFACE_BACKGROUND_INDEX
])
1813 || STRINGP (attrs
[LFACE_BACKGROUND_INDEX
]));
1814 eassert (UNSPECIFIEDP (attrs
[LFACE_INHERIT_INDEX
])
1815 || IGNORE_DEFFACE_P (attrs
[LFACE_INHERIT_INDEX
])
1816 || NILP (attrs
[LFACE_INHERIT_INDEX
])
1817 || SYMBOLP (attrs
[LFACE_INHERIT_INDEX
])
1818 || CONSP (attrs
[LFACE_INHERIT_INDEX
]));
1819 #ifdef HAVE_WINDOW_SYSTEM
1820 eassert (UNSPECIFIEDP (attrs
[LFACE_STIPPLE_INDEX
])
1821 || IGNORE_DEFFACE_P (attrs
[LFACE_STIPPLE_INDEX
])
1822 || SYMBOLP (attrs
[LFACE_STIPPLE_INDEX
])
1823 || !NILP (Fbitmap_spec_p (attrs
[LFACE_STIPPLE_INDEX
])));
1824 eassert (UNSPECIFIEDP (attrs
[LFACE_FONT_INDEX
])
1825 || IGNORE_DEFFACE_P (attrs
[LFACE_FONT_INDEX
])
1826 || FONTP (attrs
[LFACE_FONT_INDEX
]));
1827 eassert (UNSPECIFIEDP (attrs
[LFACE_FONTSET_INDEX
])
1828 || STRINGP (attrs
[LFACE_FONTSET_INDEX
])
1829 || NILP (attrs
[LFACE_FONTSET_INDEX
]));
1834 /* Check consistency of attributes of Lisp face LFACE (a Lisp vector). */
1837 check_lface (Lisp_Object lface
)
1841 eassert (LFACEP (lface
));
1842 check_lface_attrs (XVECTOR (lface
)->contents
);
1846 #else /* not GLYPH_DEBUG */
1848 #define check_lface_attrs(attrs) (void) 0
1849 #define check_lface(lface) (void) 0
1851 #endif /* GLYPH_DEBUG */
1855 /* Face-merge cycle checking. */
1857 enum named_merge_point_kind
1859 NAMED_MERGE_POINT_NORMAL
,
1860 NAMED_MERGE_POINT_REMAP
1863 /* A `named merge point' is simply a point during face-merging where we
1864 look up a face by name. We keep a stack of which named lookups we're
1865 currently processing so that we can easily detect cycles, using a
1866 linked- list of struct named_merge_point structures, typically
1867 allocated on the stack frame of the named lookup functions which are
1868 active (so no consing is required). */
1869 struct named_merge_point
1871 Lisp_Object face_name
;
1872 enum named_merge_point_kind named_merge_point_kind
;
1873 struct named_merge_point
*prev
;
1877 /* If a face merging cycle is detected for FACE_NAME, return 0,
1878 otherwise add NEW_NAMED_MERGE_POINT, which is initialized using
1879 FACE_NAME and NAMED_MERGE_POINT_KIND, as the head of the linked list
1880 pointed to by NAMED_MERGE_POINTS, and return 1. */
1883 push_named_merge_point (struct named_merge_point
*new_named_merge_point
,
1884 Lisp_Object face_name
,
1885 enum named_merge_point_kind named_merge_point_kind
,
1886 struct named_merge_point
**named_merge_points
)
1888 struct named_merge_point
*prev
;
1890 for (prev
= *named_merge_points
; prev
; prev
= prev
->prev
)
1891 if (EQ (face_name
, prev
->face_name
))
1893 if (prev
->named_merge_point_kind
== named_merge_point_kind
)
1894 /* A cycle, so fail. */
1896 else if (prev
->named_merge_point_kind
== NAMED_MERGE_POINT_REMAP
)
1897 /* A remap `hides ' any previous normal merge points
1898 (because the remap means that it's actually different face),
1899 so as we know the current merge point must be normal, we
1900 can just assume it's OK. */
1904 new_named_merge_point
->face_name
= face_name
;
1905 new_named_merge_point
->named_merge_point_kind
= named_merge_point_kind
;
1906 new_named_merge_point
->prev
= *named_merge_points
;
1908 *named_merge_points
= new_named_merge_point
;
1914 /* Resolve face name FACE_NAME. If FACE_NAME is a string, intern it
1915 to make it a symbol. If FACE_NAME is an alias for another face,
1916 return that face's name.
1918 Return default face in case of errors. */
1921 resolve_face_name (Lisp_Object face_name
, int signal_p
)
1923 Lisp_Object orig_face
;
1924 Lisp_Object tortoise
, hare
;
1926 if (STRINGP (face_name
))
1927 face_name
= intern (SSDATA (face_name
));
1929 if (NILP (face_name
) || !SYMBOLP (face_name
))
1932 orig_face
= face_name
;
1933 tortoise
= hare
= face_name
;
1938 hare
= Fget (hare
, Qface_alias
);
1939 if (NILP (hare
) || !SYMBOLP (hare
))
1943 hare
= Fget (hare
, Qface_alias
);
1944 if (NILP (hare
) || !SYMBOLP (hare
))
1947 tortoise
= Fget (tortoise
, Qface_alias
);
1948 if (EQ (hare
, tortoise
))
1951 xsignal1 (Qcircular_list
, orig_face
);
1960 /* Return the face definition of FACE_NAME on frame F. F null means
1961 return the definition for new frames. FACE_NAME may be a string or
1962 a symbol (apparently Emacs 20.2 allowed strings as face names in
1963 face text properties; Ediff uses that). If SIGNAL_P is non-zero,
1964 signal an error if FACE_NAME is not a valid face name. If SIGNAL_P
1965 is zero, value is nil if FACE_NAME is not a valid face name. */
1967 lface_from_face_name_no_resolve (struct frame
*f
, Lisp_Object face_name
,
1973 lface
= assq_no_quit (face_name
, f
->face_alist
);
1975 lface
= assq_no_quit (face_name
, Vface_new_frame_defaults
);
1978 lface
= XCDR (lface
);
1980 signal_error ("Invalid face", face_name
);
1982 check_lface (lface
);
1987 /* Return the face definition of FACE_NAME on frame F. F null means
1988 return the definition for new frames. FACE_NAME may be a string or
1989 a symbol (apparently Emacs 20.2 allowed strings as face names in
1990 face text properties; Ediff uses that). If FACE_NAME is an alias
1991 for another face, return that face's definition. If SIGNAL_P is
1992 non-zero, signal an error if FACE_NAME is not a valid face name.
1993 If SIGNAL_P is zero, value is nil if FACE_NAME is not a valid face
1996 lface_from_face_name (struct frame
*f
, Lisp_Object face_name
, int signal_p
)
1998 face_name
= resolve_face_name (face_name
, signal_p
);
1999 return lface_from_face_name_no_resolve (f
, face_name
, signal_p
);
2003 /* Get face attributes of face FACE_NAME from frame-local faces on
2004 frame F. Store the resulting attributes in ATTRS which must point
2005 to a vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If SIGNAL_P
2006 is non-zero, signal an error if FACE_NAME does not name a face.
2007 Otherwise, value is zero if FACE_NAME is not a face. */
2010 get_lface_attributes_no_remap (struct frame
*f
, Lisp_Object face_name
,
2011 Lisp_Object attrs
[LFACE_VECTOR_SIZE
],
2016 lface
= lface_from_face_name_no_resolve (f
, face_name
, signal_p
);
2019 memcpy (attrs
, XVECTOR (lface
)->contents
,
2020 LFACE_VECTOR_SIZE
* sizeof *attrs
);
2022 return !NILP (lface
);
2025 /* Get face attributes of face FACE_NAME from frame-local faces on frame
2026 F. Store the resulting attributes in ATTRS which must point to a
2027 vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If FACE_NAME is an
2028 alias for another face, use that face's definition. If SIGNAL_P is
2029 non-zero, signal an error if FACE_NAME does not name a face.
2030 Otherwise, value is zero if FACE_NAME is not a face. */
2033 get_lface_attributes (struct frame
*f
, Lisp_Object face_name
,
2034 Lisp_Object attrs
[LFACE_VECTOR_SIZE
], int signal_p
,
2035 struct named_merge_point
*named_merge_points
)
2037 Lisp_Object face_remapping
;
2039 face_name
= resolve_face_name (face_name
, signal_p
);
2041 /* See if SYMBOL has been remapped to some other face (usually this
2042 is done buffer-locally). */
2043 face_remapping
= assq_no_quit (face_name
, Vface_remapping_alist
);
2044 if (CONSP (face_remapping
))
2046 struct named_merge_point named_merge_point
;
2048 if (push_named_merge_point (&named_merge_point
,
2049 face_name
, NAMED_MERGE_POINT_REMAP
,
2050 &named_merge_points
))
2054 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
2055 attrs
[i
] = Qunspecified
;
2057 return merge_face_ref (f
, XCDR (face_remapping
), attrs
,
2058 signal_p
, named_merge_points
);
2062 /* Default case, no remapping. */
2063 return get_lface_attributes_no_remap (f
, face_name
, attrs
, signal_p
);
2067 /* Non-zero if all attributes in face attribute vector ATTRS are
2068 specified, i.e. are non-nil. */
2071 lface_fully_specified_p (Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
2075 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
2076 if (i
!= LFACE_FONT_INDEX
&& i
!= LFACE_INHERIT_INDEX
)
2077 if ((UNSPECIFIEDP (attrs
[i
]) || IGNORE_DEFFACE_P (attrs
[i
])))
2080 return i
== LFACE_VECTOR_SIZE
;
2083 #ifdef HAVE_WINDOW_SYSTEM
2085 /* Set font-related attributes of Lisp face LFACE from FONT-OBJECT.
2086 If FORCE_P is zero, set only unspecified attributes of LFACE. The
2087 exception is `font' attribute. It is set to FONT_OBJECT regardless
2091 set_lface_from_font (struct frame
*f
, Lisp_Object lface
,
2092 Lisp_Object font_object
, int force_p
)
2095 struct font
*font
= XFONT_OBJECT (font_object
);
2097 /* Set attributes only if unspecified, otherwise face defaults for
2098 new frames would never take effect. If the font doesn't have a
2099 specific property, set a normal value for that. */
2101 if (force_p
|| UNSPECIFIEDP (LFACE_FAMILY (lface
)))
2103 Lisp_Object family
= AREF (font_object
, FONT_FAMILY_INDEX
);
2105 ASET (lface
, LFACE_FAMILY_INDEX
, SYMBOL_NAME (family
));
2108 if (force_p
|| UNSPECIFIEDP (LFACE_FOUNDRY (lface
)))
2110 Lisp_Object foundry
= AREF (font_object
, FONT_FOUNDRY_INDEX
);
2112 ASET (lface
, LFACE_FOUNDRY_INDEX
, SYMBOL_NAME (foundry
));
2115 if (force_p
|| UNSPECIFIEDP (LFACE_HEIGHT (lface
)))
2117 int pt
= PIXEL_TO_POINT (font
->pixel_size
* 10, FRAME_RES_Y (f
));
2120 ASET (lface
, LFACE_HEIGHT_INDEX
, make_number (pt
));
2123 if (force_p
|| UNSPECIFIEDP (LFACE_WEIGHT (lface
)))
2125 val
= FONT_WEIGHT_FOR_FACE (font_object
);
2126 ASET (lface
, LFACE_WEIGHT_INDEX
, ! NILP (val
) ? val
:Qnormal
);
2128 if (force_p
|| UNSPECIFIEDP (LFACE_SLANT (lface
)))
2130 val
= FONT_SLANT_FOR_FACE (font_object
);
2131 ASET (lface
, LFACE_SLANT_INDEX
, ! NILP (val
) ? val
: Qnormal
);
2133 if (force_p
|| UNSPECIFIEDP (LFACE_SWIDTH (lface
)))
2135 val
= FONT_WIDTH_FOR_FACE (font_object
);
2136 ASET (lface
, LFACE_SWIDTH_INDEX
, ! NILP (val
) ? val
: Qnormal
);
2139 ASET (lface
, LFACE_FONT_INDEX
, font_object
);
2143 #endif /* HAVE_WINDOW_SYSTEM */
2146 /* Merges the face height FROM with the face height TO, and returns the
2147 merged height. If FROM is an invalid height, then INVALID is
2148 returned instead. FROM and TO may be either absolute face heights or
2149 `relative' heights; the returned value is always an absolute height
2150 unless both FROM and TO are relative. */
2153 merge_face_heights (Lisp_Object from
, Lisp_Object to
, Lisp_Object invalid
)
2155 Lisp_Object result
= invalid
;
2157 if (INTEGERP (from
))
2158 /* FROM is absolute, just use it as is. */
2160 else if (FLOATP (from
))
2161 /* FROM is a scale, use it to adjust TO. */
2164 /* relative X absolute => absolute */
2165 result
= make_number (XFLOAT_DATA (from
) * XINT (to
));
2166 else if (FLOATP (to
))
2167 /* relative X relative => relative */
2168 result
= make_float (XFLOAT_DATA (from
) * XFLOAT_DATA (to
));
2169 else if (UNSPECIFIEDP (to
))
2172 else if (FUNCTIONP (from
))
2173 /* FROM is a function, which use to adjust TO. */
2175 /* Call function with current height as argument.
2176 From is the new height. */
2177 result
= safe_call1 (from
, to
);
2179 /* Ensure that if TO was absolute, so is the result. */
2180 if (INTEGERP (to
) && !INTEGERP (result
))
2188 /* Merge two Lisp face attribute vectors on frame F, FROM and TO, and
2189 store the resulting attributes in TO, which must be already be
2190 completely specified and contain only absolute attributes. Every
2191 specified attribute of FROM overrides the corresponding attribute of
2192 TO; relative attributes in FROM are merged with the absolute value in
2193 TO and replace it. NAMED_MERGE_POINTS is used internally to detect
2194 loops in face inheritance/remapping; it should be 0 when called from
2198 merge_face_vectors (struct frame
*f
, Lisp_Object
*from
, Lisp_Object
*to
,
2199 struct named_merge_point
*named_merge_points
)
2202 Lisp_Object font
= Qnil
;
2204 /* If FROM inherits from some other faces, merge their attributes into
2205 TO before merging FROM's direct attributes. Note that an :inherit
2206 attribute of `unspecified' is the same as one of nil; we never
2207 merge :inherit attributes, so nil is more correct, but lots of
2208 other code uses `unspecified' as a generic value for face attributes. */
2209 if (!UNSPECIFIEDP (from
[LFACE_INHERIT_INDEX
])
2210 && !NILP (from
[LFACE_INHERIT_INDEX
]))
2211 merge_face_ref (f
, from
[LFACE_INHERIT_INDEX
], to
, 0, named_merge_points
);
2213 if (FONT_SPEC_P (from
[LFACE_FONT_INDEX
]))
2215 if (!UNSPECIFIEDP (to
[LFACE_FONT_INDEX
]))
2216 font
= merge_font_spec (from
[LFACE_FONT_INDEX
], to
[LFACE_FONT_INDEX
]);
2218 font
= copy_font_spec (from
[LFACE_FONT_INDEX
]);
2219 to
[LFACE_FONT_INDEX
] = font
;
2222 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
2223 if (!UNSPECIFIEDP (from
[i
]))
2225 if (i
== LFACE_HEIGHT_INDEX
&& !INTEGERP (from
[i
]))
2227 to
[i
] = merge_face_heights (from
[i
], to
[i
], to
[i
]);
2228 font_clear_prop (to
, FONT_SIZE_INDEX
);
2230 else if (i
!= LFACE_FONT_INDEX
&& ! EQ (to
[i
], from
[i
]))
2233 if (i
>= LFACE_FAMILY_INDEX
&& i
<=LFACE_SLANT_INDEX
)
2234 font_clear_prop (to
,
2235 (i
== LFACE_FAMILY_INDEX
? FONT_FAMILY_INDEX
2236 : i
== LFACE_FOUNDRY_INDEX
? FONT_FOUNDRY_INDEX
2237 : i
== LFACE_SWIDTH_INDEX
? FONT_WIDTH_INDEX
2238 : i
== LFACE_HEIGHT_INDEX
? FONT_SIZE_INDEX
2239 : i
== LFACE_WEIGHT_INDEX
? FONT_WEIGHT_INDEX
2240 : FONT_SLANT_INDEX
));
2244 /* If FROM specifies a font spec, make its contents take precedence
2245 over :family and other attributes. This is needed for face
2246 remapping using :font to work. */
2250 if (! NILP (AREF (font
, FONT_FOUNDRY_INDEX
)))
2251 to
[LFACE_FOUNDRY_INDEX
] = SYMBOL_NAME (AREF (font
, FONT_FOUNDRY_INDEX
));
2252 if (! NILP (AREF (font
, FONT_FAMILY_INDEX
)))
2253 to
[LFACE_FAMILY_INDEX
] = SYMBOL_NAME (AREF (font
, FONT_FAMILY_INDEX
));
2254 if (! NILP (AREF (font
, FONT_WEIGHT_INDEX
)))
2255 to
[LFACE_WEIGHT_INDEX
] = FONT_WEIGHT_FOR_FACE (font
);
2256 if (! NILP (AREF (font
, FONT_SLANT_INDEX
)))
2257 to
[LFACE_SLANT_INDEX
] = FONT_SLANT_FOR_FACE (font
);
2258 if (! NILP (AREF (font
, FONT_WIDTH_INDEX
)))
2259 to
[LFACE_SWIDTH_INDEX
] = FONT_WIDTH_FOR_FACE (font
);
2260 ASET (font
, FONT_SIZE_INDEX
, Qnil
);
2263 /* TO is always an absolute face, which should inherit from nothing.
2264 We blindly copy the :inherit attribute above and fix it up here. */
2265 to
[LFACE_INHERIT_INDEX
] = Qnil
;
2268 /* Merge the named face FACE_NAME on frame F, into the vector of face
2269 attributes TO. NAMED_MERGE_POINTS is used to detect loops in face
2270 inheritance. Returns true if FACE_NAME is a valid face name and
2271 merging succeeded. */
2274 merge_named_face (struct frame
*f
, Lisp_Object face_name
, Lisp_Object
*to
,
2275 struct named_merge_point
*named_merge_points
)
2277 struct named_merge_point named_merge_point
;
2279 if (push_named_merge_point (&named_merge_point
,
2280 face_name
, NAMED_MERGE_POINT_NORMAL
,
2281 &named_merge_points
))
2283 struct gcpro gcpro1
;
2284 Lisp_Object from
[LFACE_VECTOR_SIZE
];
2285 int ok
= get_lface_attributes (f
, face_name
, from
, 0, named_merge_points
);
2289 GCPRO1 (named_merge_point
.face_name
);
2290 merge_face_vectors (f
, from
, to
, named_merge_points
);
2301 /* Merge face attributes from the lisp `face reference' FACE_REF on
2302 frame F into the face attribute vector TO. If ERR_MSGS is non-zero,
2303 problems with FACE_REF cause an error message to be shown. Return
2304 non-zero if no errors occurred (regardless of the value of ERR_MSGS).
2305 NAMED_MERGE_POINTS is used to detect loops in face inheritance or
2306 list structure; it may be 0 for most callers.
2308 FACE_REF may be a single face specification or a list of such
2309 specifications. Each face specification can be:
2311 1. A symbol or string naming a Lisp face.
2313 2. A property list of the form (KEYWORD VALUE ...) where each
2314 KEYWORD is a face attribute name, and value is an appropriate value
2317 3. Conses or the form (FOREGROUND-COLOR . COLOR) or
2318 (BACKGROUND-COLOR . COLOR) where COLOR is a color name. This is
2319 for compatibility with 20.2.
2321 Face specifications earlier in lists take precedence over later
2325 merge_face_ref (struct frame
*f
, Lisp_Object face_ref
, Lisp_Object
*to
,
2326 int err_msgs
, struct named_merge_point
*named_merge_points
)
2328 int ok
= 1; /* Succeed without an error? */
2330 if (CONSP (face_ref
))
2332 Lisp_Object first
= XCAR (face_ref
);
2334 if (EQ (first
, Qforeground_color
)
2335 || EQ (first
, Qbackground_color
))
2337 /* One of (FOREGROUND-COLOR . COLOR) or (BACKGROUND-COLOR
2338 . COLOR). COLOR must be a string. */
2339 Lisp_Object color_name
= XCDR (face_ref
);
2340 Lisp_Object color
= first
;
2342 if (STRINGP (color_name
))
2344 if (EQ (color
, Qforeground_color
))
2345 to
[LFACE_FOREGROUND_INDEX
] = color_name
;
2347 to
[LFACE_BACKGROUND_INDEX
] = color_name
;
2352 add_to_log ("Invalid face color", color_name
, Qnil
);
2356 else if (SYMBOLP (first
)
2357 && *SDATA (SYMBOL_NAME (first
)) == ':')
2359 /* Assume this is the property list form. */
2360 while (CONSP (face_ref
) && CONSP (XCDR (face_ref
)))
2362 Lisp_Object keyword
= XCAR (face_ref
);
2363 Lisp_Object value
= XCAR (XCDR (face_ref
));
2366 /* Specifying `unspecified' is a no-op. */
2367 if (EQ (value
, Qunspecified
))
2369 else if (EQ (keyword
, QCfamily
))
2371 if (STRINGP (value
))
2373 to
[LFACE_FAMILY_INDEX
] = value
;
2374 font_clear_prop (to
, FONT_FAMILY_INDEX
);
2379 else if (EQ (keyword
, QCfoundry
))
2381 if (STRINGP (value
))
2383 to
[LFACE_FOUNDRY_INDEX
] = value
;
2384 font_clear_prop (to
, FONT_FOUNDRY_INDEX
);
2389 else if (EQ (keyword
, QCheight
))
2391 Lisp_Object new_height
=
2392 merge_face_heights (value
, to
[LFACE_HEIGHT_INDEX
], Qnil
);
2394 if (! NILP (new_height
))
2396 to
[LFACE_HEIGHT_INDEX
] = new_height
;
2397 font_clear_prop (to
, FONT_SIZE_INDEX
);
2402 else if (EQ (keyword
, QCweight
))
2404 if (SYMBOLP (value
) && FONT_WEIGHT_NAME_NUMERIC (value
) >= 0)
2406 to
[LFACE_WEIGHT_INDEX
] = value
;
2407 font_clear_prop (to
, FONT_WEIGHT_INDEX
);
2412 else if (EQ (keyword
, QCslant
))
2414 if (SYMBOLP (value
) && FONT_SLANT_NAME_NUMERIC (value
) >= 0)
2416 to
[LFACE_SLANT_INDEX
] = value
;
2417 font_clear_prop (to
, FONT_SLANT_INDEX
);
2422 else if (EQ (keyword
, QCunderline
))
2428 to
[LFACE_UNDERLINE_INDEX
] = value
;
2432 else if (EQ (keyword
, QCoverline
))
2437 to
[LFACE_OVERLINE_INDEX
] = value
;
2441 else if (EQ (keyword
, QCstrike_through
))
2446 to
[LFACE_STRIKE_THROUGH_INDEX
] = value
;
2450 else if (EQ (keyword
, QCbox
))
2453 value
= make_number (1);
2454 if (INTEGERP (value
)
2458 to
[LFACE_BOX_INDEX
] = value
;
2462 else if (EQ (keyword
, QCinverse_video
)
2463 || EQ (keyword
, QCreverse_video
))
2465 if (EQ (value
, Qt
) || NILP (value
))
2466 to
[LFACE_INVERSE_INDEX
] = value
;
2470 else if (EQ (keyword
, QCforeground
))
2472 if (STRINGP (value
))
2473 to
[LFACE_FOREGROUND_INDEX
] = value
;
2477 else if (EQ (keyword
, QCdistant_foreground
))
2479 if (STRINGP (value
))
2480 to
[LFACE_DISTANT_FOREGROUND_INDEX
] = value
;
2484 else if (EQ (keyword
, QCbackground
))
2486 if (STRINGP (value
))
2487 to
[LFACE_BACKGROUND_INDEX
] = value
;
2491 else if (EQ (keyword
, QCstipple
))
2493 #if defined (HAVE_WINDOW_SYSTEM)
2494 Lisp_Object pixmap_p
= Fbitmap_spec_p (value
);
2495 if (!NILP (pixmap_p
))
2496 to
[LFACE_STIPPLE_INDEX
] = value
;
2499 #endif /* HAVE_WINDOW_SYSTEM */
2501 else if (EQ (keyword
, QCwidth
))
2503 if (SYMBOLP (value
) && FONT_WIDTH_NAME_NUMERIC (value
) >= 0)
2505 to
[LFACE_SWIDTH_INDEX
] = value
;
2506 font_clear_prop (to
, FONT_WIDTH_INDEX
);
2511 else if (EQ (keyword
, QCfont
))
2514 to
[LFACE_FONT_INDEX
] = value
;
2518 else if (EQ (keyword
, QCinherit
))
2520 /* This is not really very useful; it's just like a
2521 normal face reference. */
2522 if (! merge_face_ref (f
, value
, to
,
2523 err_msgs
, named_merge_points
))
2531 add_to_log ("Invalid face attribute %S %S", keyword
, value
);
2535 face_ref
= XCDR (XCDR (face_ref
));
2540 /* This is a list of face refs. Those at the beginning of the
2541 list take precedence over what follows, so we have to merge
2542 from the end backwards. */
2543 Lisp_Object next
= XCDR (face_ref
);
2546 ok
= merge_face_ref (f
, next
, to
, err_msgs
, named_merge_points
);
2548 if (! merge_face_ref (f
, first
, to
, err_msgs
, named_merge_points
))
2554 /* FACE_REF ought to be a face name. */
2555 ok
= merge_named_face (f
, face_ref
, to
, named_merge_points
);
2556 if (!ok
&& err_msgs
)
2557 add_to_log ("Invalid face reference: %s", face_ref
, Qnil
);
2564 DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face
,
2565 Sinternal_make_lisp_face
, 1, 2, 0,
2566 doc
: /* Make FACE, a symbol, a Lisp face with all attributes nil.
2567 If FACE was not known as a face before, create a new one.
2568 If optional argument FRAME is specified, make a frame-local face
2569 for that frame. Otherwise operate on the global face definition.
2570 Value is a vector of face attributes. */)
2571 (Lisp_Object face
, Lisp_Object frame
)
2573 Lisp_Object global_lface
, lface
;
2577 CHECK_SYMBOL (face
);
2578 global_lface
= lface_from_face_name (NULL
, face
, 0);
2582 CHECK_LIVE_FRAME (frame
);
2584 lface
= lface_from_face_name (f
, face
, 0);
2587 f
= NULL
, lface
= Qnil
;
2589 /* Add a global definition if there is none. */
2590 if (NILP (global_lface
))
2592 global_lface
= Fmake_vector (make_number (LFACE_VECTOR_SIZE
),
2594 ASET (global_lface
, 0, Qface
);
2595 Vface_new_frame_defaults
= Fcons (Fcons (face
, global_lface
),
2596 Vface_new_frame_defaults
);
2598 /* Assign the new Lisp face a unique ID. The mapping from Lisp
2599 face id to Lisp face is given by the vector lface_id_to_name.
2600 The mapping from Lisp face to Lisp face id is given by the
2601 property `face' of the Lisp face name. */
2602 if (next_lface_id
== lface_id_to_name_size
)
2604 xpalloc (lface_id_to_name
, &lface_id_to_name_size
, 1, MAX_FACE_ID
,
2605 sizeof *lface_id_to_name
);
2607 lface_id_to_name
[next_lface_id
] = face
;
2608 Fput (face
, Qface
, make_number (next_lface_id
));
2612 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
2613 ASET (global_lface
, i
, Qunspecified
);
2615 /* Add a frame-local definition. */
2620 lface
= Fmake_vector (make_number (LFACE_VECTOR_SIZE
),
2622 ASET (lface
, 0, Qface
);
2623 fset_face_alist (f
, Fcons (Fcons (face
, lface
), f
->face_alist
));
2626 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
2627 ASET (lface
, i
, Qunspecified
);
2630 lface
= global_lface
;
2632 /* Changing a named face means that all realized faces depending on
2633 that face are invalid. Since we cannot tell which realized faces
2634 depend on the face, make sure they are all removed. This is done
2635 by incrementing face_change_count. The next call to
2636 init_iterator will then free realized faces. */
2637 if (NILP (Fget (face
, Qface_no_inherit
)))
2639 ++face_change_count
;
2640 ++windows_or_buffers_changed
;
2643 eassert (LFACEP (lface
));
2644 check_lface (lface
);
2649 DEFUN ("internal-lisp-face-p", Finternal_lisp_face_p
,
2650 Sinternal_lisp_face_p
, 1, 2, 0,
2651 doc
: /* Return non-nil if FACE names a face.
2652 FACE should be a symbol or string.
2653 If optional second argument FRAME is non-nil, check for the
2654 existence of a frame-local face with name FACE on that frame.
2655 Otherwise check for the existence of a global face. */)
2656 (Lisp_Object face
, Lisp_Object frame
)
2660 face
= resolve_face_name (face
, 1);
2664 CHECK_LIVE_FRAME (frame
);
2665 lface
= lface_from_face_name (XFRAME (frame
), face
, 0);
2668 lface
= lface_from_face_name (NULL
, face
, 0);
2674 DEFUN ("internal-copy-lisp-face", Finternal_copy_lisp_face
,
2675 Sinternal_copy_lisp_face
, 4, 4, 0,
2676 doc
: /* Copy face FROM to TO.
2677 If FRAME is t, copy the global face definition of FROM.
2678 Otherwise, copy the frame-local definition of FROM on FRAME.
2679 If NEW-FRAME is a frame, copy that data into the frame-local
2680 definition of TO on NEW-FRAME. If NEW-FRAME is nil,
2681 FRAME controls where the data is copied to.
2683 The value is TO. */)
2684 (Lisp_Object from
, Lisp_Object to
, Lisp_Object frame
, Lisp_Object new_frame
)
2686 Lisp_Object lface
, copy
;
2688 CHECK_SYMBOL (from
);
2693 /* Copy global definition of FROM. We don't make copies of
2694 strings etc. because 20.2 didn't do it either. */
2695 lface
= lface_from_face_name (NULL
, from
, 1);
2696 copy
= Finternal_make_lisp_face (to
, Qnil
);
2700 /* Copy frame-local definition of FROM. */
2701 if (NILP (new_frame
))
2703 CHECK_LIVE_FRAME (frame
);
2704 CHECK_LIVE_FRAME (new_frame
);
2705 lface
= lface_from_face_name (XFRAME (frame
), from
, 1);
2706 copy
= Finternal_make_lisp_face (to
, new_frame
);
2709 vcopy (copy
, 0, XVECTOR (lface
)->contents
, LFACE_VECTOR_SIZE
);
2711 /* Changing a named face means that all realized faces depending on
2712 that face are invalid. Since we cannot tell which realized faces
2713 depend on the face, make sure they are all removed. This is done
2714 by incrementing face_change_count. The next call to
2715 init_iterator will then free realized faces. */
2716 if (NILP (Fget (to
, Qface_no_inherit
)))
2718 ++face_change_count
;
2719 ++windows_or_buffers_changed
;
2726 DEFUN ("internal-set-lisp-face-attribute", Finternal_set_lisp_face_attribute
,
2727 Sinternal_set_lisp_face_attribute
, 3, 4, 0,
2728 doc
: /* Set attribute ATTR of FACE to VALUE.
2729 FRAME being a frame means change the face on that frame.
2730 FRAME nil means change the face of the selected frame.
2731 FRAME t means change the default for new frames.
2732 FRAME 0 means change the face on all frames, and change the default
2734 (Lisp_Object face
, Lisp_Object attr
, Lisp_Object value
, Lisp_Object frame
)
2737 Lisp_Object old_value
= Qnil
;
2738 /* Set one of enum font_property_index (> 0) if ATTR is one of
2739 font-related attributes other than QCfont and QCfontset. */
2740 enum font_property_index prop_index
= 0;
2742 CHECK_SYMBOL (face
);
2743 CHECK_SYMBOL (attr
);
2745 face
= resolve_face_name (face
, 1);
2747 /* If FRAME is 0, change face on all frames, and change the
2748 default for new frames. */
2749 if (INTEGERP (frame
) && XINT (frame
) == 0)
2752 Finternal_set_lisp_face_attribute (face
, attr
, value
, Qt
);
2753 FOR_EACH_FRAME (tail
, frame
)
2754 Finternal_set_lisp_face_attribute (face
, attr
, value
, frame
);
2758 /* Set lface to the Lisp attribute vector of FACE. */
2761 lface
= lface_from_face_name (NULL
, face
, 1);
2763 /* When updating face-new-frame-defaults, we put :ignore-defface
2764 where the caller wants `unspecified'. This forces the frame
2765 defaults to ignore the defface value. Otherwise, the defface
2766 will take effect, which is generally not what is intended.
2767 The value of that attribute will be inherited from some other
2768 face during face merging. See internal_merge_in_global_face. */
2769 if (UNSPECIFIEDP (value
))
2770 value
= QCignore_defface
;
2775 frame
= selected_frame
;
2777 CHECK_LIVE_FRAME (frame
);
2778 lface
= lface_from_face_name (XFRAME (frame
), face
, 0);
2780 /* If a frame-local face doesn't exist yet, create one. */
2782 lface
= Finternal_make_lisp_face (face
, frame
);
2785 if (EQ (attr
, QCfamily
))
2787 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2789 CHECK_STRING (value
);
2790 if (SCHARS (value
) == 0)
2791 signal_error ("Invalid face family", value
);
2793 old_value
= LFACE_FAMILY (lface
);
2794 ASET (lface
, LFACE_FAMILY_INDEX
, value
);
2795 prop_index
= FONT_FAMILY_INDEX
;
2797 else if (EQ (attr
, QCfoundry
))
2799 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2801 CHECK_STRING (value
);
2802 if (SCHARS (value
) == 0)
2803 signal_error ("Invalid face foundry", value
);
2805 old_value
= LFACE_FOUNDRY (lface
);
2806 ASET (lface
, LFACE_FOUNDRY_INDEX
, value
);
2807 prop_index
= FONT_FOUNDRY_INDEX
;
2809 else if (EQ (attr
, QCheight
))
2811 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2813 if (EQ (face
, Qdefault
))
2815 /* The default face must have an absolute size. */
2816 if (!INTEGERP (value
) || XINT (value
) <= 0)
2817 signal_error ("Default face height not absolute and positive",
2822 /* For non-default faces, do a test merge with a random
2823 height to see if VALUE's ok. */
2824 Lisp_Object test
= merge_face_heights (value
,
2827 if (!INTEGERP (test
) || XINT (test
) <= 0)
2828 signal_error ("Face height does not produce a positive integer",
2833 old_value
= LFACE_HEIGHT (lface
);
2834 ASET (lface
, LFACE_HEIGHT_INDEX
, value
);
2835 prop_index
= FONT_SIZE_INDEX
;
2837 else if (EQ (attr
, QCweight
))
2839 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2841 CHECK_SYMBOL (value
);
2842 if (FONT_WEIGHT_NAME_NUMERIC (value
) < 0)
2843 signal_error ("Invalid face weight", value
);
2845 old_value
= LFACE_WEIGHT (lface
);
2846 ASET (lface
, LFACE_WEIGHT_INDEX
, value
);
2847 prop_index
= FONT_WEIGHT_INDEX
;
2849 else if (EQ (attr
, QCslant
))
2851 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2853 CHECK_SYMBOL (value
);
2854 if (FONT_SLANT_NAME_NUMERIC (value
) < 0)
2855 signal_error ("Invalid face slant", value
);
2857 old_value
= LFACE_SLANT (lface
);
2858 ASET (lface
, LFACE_SLANT_INDEX
, value
);
2859 prop_index
= FONT_SLANT_INDEX
;
2861 else if (EQ (attr
, QCunderline
))
2865 if (UNSPECIFIEDP (value
) || IGNORE_DEFFACE_P (value
))
2867 else if (NILP (value
) || EQ (value
, Qt
))
2869 else if (STRINGP (value
) && SCHARS (value
) > 0)
2871 else if (CONSP (value
))
2873 Lisp_Object key
, val
, list
;
2876 /* FIXME? This errs on the side of acceptance. Eg it accepts:
2877 (defface foo '((t :underline 'foo) "doc")
2878 Maybe this is intentional, maybe it isn't.
2879 Non-nil symbols other than t are not documented as being valid.
2880 Eg compare with inverse-video, which explicitly rejects them.
2884 while (!NILP (CAR_SAFE(list
)))
2886 key
= CAR_SAFE (list
);
2887 list
= CDR_SAFE (list
);
2888 val
= CAR_SAFE (list
);
2889 list
= CDR_SAFE (list
);
2891 if (NILP (key
) || NILP (val
))
2897 else if (EQ (key
, QCcolor
)
2898 && !(EQ (val
, Qforeground_color
)
2899 || (STRINGP (val
) && SCHARS (val
) > 0)))
2905 else if (EQ (key
, QCstyle
)
2906 && !(EQ (val
, Qline
) || EQ (val
, Qwave
)))
2915 signal_error ("Invalid face underline", value
);
2917 old_value
= LFACE_UNDERLINE (lface
);
2918 ASET (lface
, LFACE_UNDERLINE_INDEX
, value
);
2920 else if (EQ (attr
, QCoverline
))
2922 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2923 if ((SYMBOLP (value
)
2925 && !EQ (value
, Qnil
))
2926 /* Overline color. */
2928 && SCHARS (value
) == 0))
2929 signal_error ("Invalid face overline", value
);
2931 old_value
= LFACE_OVERLINE (lface
);
2932 ASET (lface
, LFACE_OVERLINE_INDEX
, value
);
2934 else if (EQ (attr
, QCstrike_through
))
2936 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
2937 if ((SYMBOLP (value
)
2939 && !EQ (value
, Qnil
))
2940 /* Strike-through color. */
2942 && SCHARS (value
) == 0))
2943 signal_error ("Invalid face strike-through", value
);
2945 old_value
= LFACE_STRIKE_THROUGH (lface
);
2946 ASET (lface
, LFACE_STRIKE_THROUGH_INDEX
, value
);
2948 else if (EQ (attr
, QCbox
))
2952 /* Allow t meaning a simple box of width 1 in foreground color
2955 value
= make_number (1);
2957 if (UNSPECIFIEDP (value
) || IGNORE_DEFFACE_P (value
))
2959 else if (NILP (value
))
2961 else if (INTEGERP (value
))
2962 valid_p
= XINT (value
) != 0;
2963 else if (STRINGP (value
))
2964 valid_p
= SCHARS (value
) > 0;
2965 else if (CONSP (value
))
2981 if (EQ (k
, QCline_width
))
2983 if (!INTEGERP (v
) || XINT (v
) == 0)
2986 else if (EQ (k
, QCcolor
))
2988 if (!NILP (v
) && (!STRINGP (v
) || SCHARS (v
) == 0))
2991 else if (EQ (k
, QCstyle
))
2993 if (!EQ (v
, Qpressed_button
) && !EQ (v
, Qreleased_button
))
3000 valid_p
= NILP (tem
);
3006 signal_error ("Invalid face box", value
);
3008 old_value
= LFACE_BOX (lface
);
3009 ASET (lface
, LFACE_BOX_INDEX
, value
);
3011 else if (EQ (attr
, QCinverse_video
)
3012 || EQ (attr
, QCreverse_video
))
3014 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3016 CHECK_SYMBOL (value
);
3017 if (!EQ (value
, Qt
) && !NILP (value
))
3018 signal_error ("Invalid inverse-video face attribute value", value
);
3020 old_value
= LFACE_INVERSE (lface
);
3021 ASET (lface
, LFACE_INVERSE_INDEX
, value
);
3023 else if (EQ (attr
, QCforeground
))
3025 /* Compatibility with 20.x. */
3027 value
= Qunspecified
;
3028 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3030 /* Don't check for valid color names here because it depends
3031 on the frame (display) whether the color will be valid
3032 when the face is realized. */
3033 CHECK_STRING (value
);
3034 if (SCHARS (value
) == 0)
3035 signal_error ("Empty foreground color value", value
);
3037 old_value
= LFACE_FOREGROUND (lface
);
3038 ASET (lface
, LFACE_FOREGROUND_INDEX
, value
);
3040 else if (EQ (attr
, QCdistant_foreground
))
3042 /* Compatibility with 20.x. */
3044 value
= Qunspecified
;
3045 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3047 /* Don't check for valid color names here because it depends
3048 on the frame (display) whether the color will be valid
3049 when the face is realized. */
3050 CHECK_STRING (value
);
3051 if (SCHARS (value
) == 0)
3052 signal_error ("Empty distant-foreground color value", value
);
3054 old_value
= LFACE_DISTANT_FOREGROUND (lface
);
3055 ASET (lface
, LFACE_DISTANT_FOREGROUND_INDEX
, value
);
3057 else if (EQ (attr
, QCbackground
))
3059 /* Compatibility with 20.x. */
3061 value
= Qunspecified
;
3062 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3064 /* Don't check for valid color names here because it depends
3065 on the frame (display) whether the color will be valid
3066 when the face is realized. */
3067 CHECK_STRING (value
);
3068 if (SCHARS (value
) == 0)
3069 signal_error ("Empty background color value", value
);
3071 old_value
= LFACE_BACKGROUND (lface
);
3072 ASET (lface
, LFACE_BACKGROUND_INDEX
, value
);
3074 else if (EQ (attr
, QCstipple
))
3076 #if defined (HAVE_WINDOW_SYSTEM)
3077 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
)
3079 && NILP (Fbitmap_spec_p (value
)))
3080 signal_error ("Invalid stipple attribute", value
);
3081 old_value
= LFACE_STIPPLE (lface
);
3082 ASET (lface
, LFACE_STIPPLE_INDEX
, value
);
3083 #endif /* HAVE_WINDOW_SYSTEM */
3085 else if (EQ (attr
, QCwidth
))
3087 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3089 CHECK_SYMBOL (value
);
3090 if (FONT_WIDTH_NAME_NUMERIC (value
) < 0)
3091 signal_error ("Invalid face width", value
);
3093 old_value
= LFACE_SWIDTH (lface
);
3094 ASET (lface
, LFACE_SWIDTH_INDEX
, value
);
3095 prop_index
= FONT_WIDTH_INDEX
;
3097 else if (EQ (attr
, QCfont
))
3099 #ifdef HAVE_WINDOW_SYSTEM
3100 if (EQ (frame
, Qt
) || FRAME_WINDOW_P (XFRAME (frame
)))
3102 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
))
3106 old_value
= LFACE_FONT (lface
);
3107 if (! FONTP (value
))
3109 if (STRINGP (value
))
3111 Lisp_Object name
= value
;
3112 int fontset
= fs_query_fontset (name
, 0);
3115 name
= fontset_ascii (fontset
);
3116 value
= font_spec_from_name (name
);
3118 signal_error ("Invalid font name", name
);
3121 signal_error ("Invalid font or font-spec", value
);
3124 f
= XFRAME (selected_frame
);
3127 if (! FONT_OBJECT_P (value
))
3129 Lisp_Object
*attrs
= XVECTOR (lface
)->contents
;
3130 Lisp_Object font_object
;
3132 font_object
= font_load_for_lface (f
, attrs
, value
);
3133 if (NILP (font_object
))
3134 signal_error ("Font not available", value
);
3135 value
= font_object
;
3137 set_lface_from_font (f
, lface
, value
, 1);
3140 ASET (lface
, LFACE_FONT_INDEX
, value
);
3142 #endif /* HAVE_WINDOW_SYSTEM */
3144 else if (EQ (attr
, QCfontset
))
3146 #ifdef HAVE_WINDOW_SYSTEM
3147 if (EQ (frame
, Qt
) || FRAME_WINDOW_P (XFRAME (frame
)))
3151 old_value
= LFACE_FONTSET (lface
);
3152 tmp
= Fquery_fontset (value
, Qnil
);
3154 signal_error ("Invalid fontset name", value
);
3155 ASET (lface
, LFACE_FONTSET_INDEX
, value
= tmp
);
3157 #endif /* HAVE_WINDOW_SYSTEM */
3159 else if (EQ (attr
, QCinherit
))
3162 if (SYMBOLP (value
))
3165 for (tail
= value
; CONSP (tail
); tail
= XCDR (tail
))
3166 if (!SYMBOLP (XCAR (tail
)))
3169 ASET (lface
, LFACE_INHERIT_INDEX
, value
);
3171 signal_error ("Invalid face inheritance", value
);
3173 else if (EQ (attr
, QCbold
))
3175 old_value
= LFACE_WEIGHT (lface
);
3176 ASET (lface
, LFACE_WEIGHT_INDEX
, NILP (value
) ? Qnormal
: Qbold
);
3177 prop_index
= FONT_WEIGHT_INDEX
;
3179 else if (EQ (attr
, QCitalic
))
3182 old_value
= LFACE_SLANT (lface
);
3183 ASET (lface
, LFACE_SLANT_INDEX
, NILP (value
) ? Qnormal
: Qitalic
);
3184 prop_index
= FONT_SLANT_INDEX
;
3187 signal_error ("Invalid face attribute name", attr
);
3191 /* If a font-related attribute other than QCfont and QCfontset
3192 is specified, and if the original QCfont attribute has a font
3193 (font-spec or font-object), set the corresponding property in
3194 the font to nil so that the font selector doesn't think that
3195 the attribute is mandatory. Also, clear the average
3197 font_clear_prop (XVECTOR (lface
)->contents
, prop_index
);
3200 /* Changing a named face means that all realized faces depending on
3201 that face are invalid. Since we cannot tell which realized faces
3202 depend on the face, make sure they are all removed. This is done
3203 by incrementing face_change_count. The next call to
3204 init_iterator will then free realized faces. */
3206 && NILP (Fget (face
, Qface_no_inherit
))
3207 && NILP (Fequal (old_value
, value
)))
3209 ++face_change_count
;
3210 ++windows_or_buffers_changed
;
3213 if (!UNSPECIFIEDP (value
) && !IGNORE_DEFFACE_P (value
)
3214 && NILP (Fequal (old_value
, value
)))
3220 if (EQ (face
, Qdefault
))
3222 #ifdef HAVE_WINDOW_SYSTEM
3223 /* Changed font-related attributes of the `default' face are
3224 reflected in changed `font' frame parameters. */
3226 && (prop_index
|| EQ (attr
, QCfont
))
3227 && lface_fully_specified_p (XVECTOR (lface
)->contents
))
3228 set_font_frame_param (frame
, lface
);
3230 #endif /* HAVE_WINDOW_SYSTEM */
3232 if (EQ (attr
, QCforeground
))
3233 param
= Qforeground_color
;
3234 else if (EQ (attr
, QCbackground
))
3235 param
= Qbackground_color
;
3237 #ifdef HAVE_WINDOW_SYSTEM
3239 else if (EQ (face
, Qscroll_bar
))
3241 /* Changing the colors of `scroll-bar' sets frame parameters
3242 `scroll-bar-foreground' and `scroll-bar-background'. */
3243 if (EQ (attr
, QCforeground
))
3244 param
= Qscroll_bar_foreground
;
3245 else if (EQ (attr
, QCbackground
))
3246 param
= Qscroll_bar_background
;
3248 #endif /* not HAVE_NTGUI */
3249 else if (EQ (face
, Qborder
))
3251 /* Changing background color of `border' sets frame parameter
3253 if (EQ (attr
, QCbackground
))
3254 param
= Qborder_color
;
3256 else if (EQ (face
, Qcursor
))
3258 /* Changing background color of `cursor' sets frame parameter
3260 if (EQ (attr
, QCbackground
))
3261 param
= Qcursor_color
;
3263 else if (EQ (face
, Qmouse
))
3265 /* Changing background color of `mouse' sets frame parameter
3267 if (EQ (attr
, QCbackground
))
3268 param
= Qmouse_color
;
3270 #endif /* HAVE_WINDOW_SYSTEM */
3271 else if (EQ (face
, Qmenu
))
3273 /* Indicate that we have to update the menu bar when realizing
3274 faces on FRAME. FRAME t change the default for new frames.
3275 We do this by setting the flag in new face caches. */
3278 struct frame
*f
= XFRAME (frame
);
3279 if (FRAME_FACE_CACHE (f
) == NULL
)
3280 FRAME_FACE_CACHE (f
) = make_face_cache (f
);
3281 FRAME_FACE_CACHE (f
)->menu_face_changed_p
= 1;
3284 menu_face_changed_default
= 1;
3290 /* Update `default-frame-alist', which is used for new frames. */
3292 store_in_alist (&Vdefault_frame_alist
, param
, value
);
3295 /* Update the current frame's parameters. */
3298 cons
= XCAR (Vparam_value_alist
);
3299 XSETCAR (cons
, param
);
3300 XSETCDR (cons
, value
);
3301 Fmodify_frame_parameters (frame
, Vparam_value_alist
);
3310 /* Update the corresponding face when frame parameter PARAM on frame F
3311 has been assigned the value NEW_VALUE. */
3314 update_face_from_frame_parameter (struct frame
*f
, Lisp_Object param
,
3315 Lisp_Object new_value
)
3317 Lisp_Object face
= Qnil
;
3320 /* If there are no faces yet, give up. This is the case when called
3321 from Fx_create_frame, and we do the necessary things later in
3322 face-set-after-frame-defaults. */
3323 if (NILP (f
->face_alist
))
3326 if (EQ (param
, Qforeground_color
))
3329 lface
= lface_from_face_name (f
, face
, 1);
3330 ASET (lface
, LFACE_FOREGROUND_INDEX
,
3331 (STRINGP (new_value
) ? new_value
: Qunspecified
));
3332 realize_basic_faces (f
);
3334 else if (EQ (param
, Qbackground_color
))
3338 /* Changing the background color might change the background
3339 mode, so that we have to load new defface specs.
3340 Call frame-set-background-mode to do that. */
3341 XSETFRAME (frame
, f
);
3342 call1 (Qframe_set_background_mode
, frame
);
3345 lface
= lface_from_face_name (f
, face
, 1);
3346 ASET (lface
, LFACE_BACKGROUND_INDEX
,
3347 (STRINGP (new_value
) ? new_value
: Qunspecified
));
3348 realize_basic_faces (f
);
3350 #ifdef HAVE_WINDOW_SYSTEM
3351 else if (EQ (param
, Qborder_color
))
3354 lface
= lface_from_face_name (f
, face
, 1);
3355 ASET (lface
, LFACE_BACKGROUND_INDEX
,
3356 (STRINGP (new_value
) ? new_value
: Qunspecified
));
3358 else if (EQ (param
, Qcursor_color
))
3361 lface
= lface_from_face_name (f
, face
, 1);
3362 ASET (lface
, LFACE_BACKGROUND_INDEX
,
3363 (STRINGP (new_value
) ? new_value
: Qunspecified
));
3365 else if (EQ (param
, Qmouse_color
))
3368 lface
= lface_from_face_name (f
, face
, 1);
3369 ASET (lface
, LFACE_BACKGROUND_INDEX
,
3370 (STRINGP (new_value
) ? new_value
: Qunspecified
));
3374 /* Changing a named face means that all realized faces depending on
3375 that face are invalid. Since we cannot tell which realized faces
3376 depend on the face, make sure they are all removed. This is done
3377 by incrementing face_change_count. The next call to
3378 init_iterator will then free realized faces. */
3380 && NILP (Fget (face
, Qface_no_inherit
)))
3382 ++face_change_count
;
3383 ++windows_or_buffers_changed
;
3388 #ifdef HAVE_WINDOW_SYSTEM
3390 /* Set the `font' frame parameter of FRAME determined from the
3391 font-object set in `default' face attributes LFACE. */
3394 set_font_frame_param (Lisp_Object frame
, Lisp_Object lface
)
3396 struct frame
*f
= XFRAME (frame
);
3399 if (FRAME_WINDOW_P (f
)
3400 /* Don't do anything if the font is `unspecified'. This can
3401 happen during frame creation. */
3402 && (font
= LFACE_FONT (lface
),
3403 ! UNSPECIFIEDP (font
)))
3405 if (FONT_SPEC_P (font
))
3407 font
= font_load_for_lface (f
, XVECTOR (lface
)->contents
, font
);
3410 ASET (lface
, LFACE_FONT_INDEX
, font
);
3412 f
->default_face_done_p
= 0;
3413 Fmodify_frame_parameters (frame
, list1 (Fcons (Qfont
, font
)));
3417 DEFUN ("internal-face-x-get-resource", Finternal_face_x_get_resource
,
3418 Sinternal_face_x_get_resource
, 2, 3, 0,
3419 doc
: /* Get the value of X resource RESOURCE, class CLASS.
3420 Returned value is for the display of frame FRAME. If FRAME is not
3421 specified or nil, use selected frame. This function exists because
3422 ordinary `x-get-resource' doesn't take a frame argument. */)
3423 (Lisp_Object resource
, Lisp_Object
class, Lisp_Object frame
)
3425 Lisp_Object value
= Qnil
;
3428 CHECK_STRING (resource
);
3429 CHECK_STRING (class);
3430 f
= decode_live_frame (frame
);
3432 value
= display_x_get_resource (FRAME_DISPLAY_INFO (f
),
3433 resource
, class, Qnil
, Qnil
);
3439 /* Return resource string VALUE as a boolean value, i.e. nil, or t.
3440 If VALUE is "on" or "true", return t. If VALUE is "off" or
3441 "false", return nil. Otherwise, if SIGNAL_P is non-zero, signal an
3442 error; if SIGNAL_P is zero, return 0. */
3445 face_boolean_x_resource_value (Lisp_Object value
, int signal_p
)
3447 Lisp_Object result
= make_number (0);
3449 eassert (STRINGP (value
));
3451 if (xstrcasecmp (SSDATA (value
), "on") == 0
3452 || xstrcasecmp (SSDATA (value
), "true") == 0)
3454 else if (xstrcasecmp (SSDATA (value
), "off") == 0
3455 || xstrcasecmp (SSDATA (value
), "false") == 0)
3457 else if (xstrcasecmp (SSDATA (value
), "unspecified") == 0)
3458 result
= Qunspecified
;
3460 signal_error ("Invalid face attribute value from X resource", value
);
3466 DEFUN ("internal-set-lisp-face-attribute-from-resource",
3467 Finternal_set_lisp_face_attribute_from_resource
,
3468 Sinternal_set_lisp_face_attribute_from_resource
,
3469 3, 4, 0, doc
: /* */)
3470 (Lisp_Object face
, Lisp_Object attr
, Lisp_Object value
, Lisp_Object frame
)
3472 CHECK_SYMBOL (face
);
3473 CHECK_SYMBOL (attr
);
3474 CHECK_STRING (value
);
3476 if (xstrcasecmp (SSDATA (value
), "unspecified") == 0)
3477 value
= Qunspecified
;
3478 else if (EQ (attr
, QCheight
))
3480 value
= Fstring_to_number (value
, make_number (10));
3481 if (XINT (value
) <= 0)
3482 signal_error ("Invalid face height from X resource", value
);
3484 else if (EQ (attr
, QCbold
) || EQ (attr
, QCitalic
))
3485 value
= face_boolean_x_resource_value (value
, 1);
3486 else if (EQ (attr
, QCweight
) || EQ (attr
, QCslant
) || EQ (attr
, QCwidth
))
3487 value
= intern (SSDATA (value
));
3488 else if (EQ (attr
, QCreverse_video
) || EQ (attr
, QCinverse_video
))
3489 value
= face_boolean_x_resource_value (value
, 1);
3490 else if (EQ (attr
, QCunderline
)
3491 || EQ (attr
, QCoverline
)
3492 || EQ (attr
, QCstrike_through
))
3494 Lisp_Object boolean_value
;
3496 /* If the result of face_boolean_x_resource_value is t or nil,
3497 VALUE does NOT specify a color. */
3498 boolean_value
= face_boolean_x_resource_value (value
, 0);
3499 if (SYMBOLP (boolean_value
))
3500 value
= boolean_value
;
3502 else if (EQ (attr
, QCbox
) || EQ (attr
, QCinherit
))
3503 value
= Fcar (Fread_from_string (value
, Qnil
, Qnil
));
3505 return Finternal_set_lisp_face_attribute (face
, attr
, value
, frame
);
3508 #endif /* HAVE_WINDOW_SYSTEM */
3511 /***********************************************************************
3513 ***********************************************************************/
3515 #if defined HAVE_X_WINDOWS && defined USE_X_TOOLKIT
3517 /* Make menus on frame F appear as specified by the `menu' face. */
3520 x_update_menu_appearance (struct frame
*f
)
3522 struct x_display_info
*dpyinfo
= FRAME_DISPLAY_INFO (f
);
3526 && (rdb
= XrmGetDatabase (FRAME_X_DISPLAY (f
)),
3531 ptrdiff_t bufsize
= sizeof line
;
3532 Lisp_Object lface
= lface_from_face_name (f
, Qmenu
, 1);
3533 struct face
*face
= FACE_FROM_ID (f
, MENU_FACE_ID
);
3534 const char *myname
= SSDATA (Vx_resource_name
);
3537 const char *popup_path
= "popup_menu";
3539 const char *popup_path
= "menu.popup";
3542 if (STRINGP (LFACE_FOREGROUND (lface
)))
3544 exprintf (&buf
, &bufsize
, line
, -1, "%s.%s*foreground: %s",
3546 SDATA (LFACE_FOREGROUND (lface
)));
3547 XrmPutLineResource (&rdb
, line
);
3548 exprintf (&buf
, &bufsize
, line
, -1, "%s.pane.menubar*foreground: %s",
3549 myname
, SDATA (LFACE_FOREGROUND (lface
)));
3550 XrmPutLineResource (&rdb
, line
);
3554 if (STRINGP (LFACE_BACKGROUND (lface
)))
3556 exprintf (&buf
, &bufsize
, line
, -1, "%s.%s*background: %s",
3558 SDATA (LFACE_BACKGROUND (lface
)));
3559 XrmPutLineResource (&rdb
, line
);
3561 exprintf (&buf
, &bufsize
, line
, -1, "%s.pane.menubar*background: %s",
3562 myname
, SDATA (LFACE_BACKGROUND (lface
)));
3563 XrmPutLineResource (&rdb
, line
);
3568 /* On Solaris 5.8, it's been reported that the `menu' face
3569 can be unspecified here, during startup. Why this
3570 happens remains unknown. -- cyd */
3571 && FONTP (LFACE_FONT (lface
))
3572 && (!UNSPECIFIEDP (LFACE_FAMILY (lface
))
3573 || !UNSPECIFIEDP (LFACE_FOUNDRY (lface
))
3574 || !UNSPECIFIEDP (LFACE_SWIDTH (lface
))
3575 || !UNSPECIFIEDP (LFACE_WEIGHT (lface
))
3576 || !UNSPECIFIEDP (LFACE_SLANT (lface
))
3577 || !UNSPECIFIEDP (LFACE_HEIGHT (lface
))))
3579 Lisp_Object xlfd
= Ffont_xlfd_name (LFACE_FONT (lface
), Qnil
);
3581 const char *suffix
= "List";
3584 #if defined HAVE_X_I18N
3586 const char *suffix
= "Set";
3588 const char *suffix
= "";
3595 #if defined HAVE_X_I18N
3596 char *fontsetname
= xic_create_fontsetname (SSDATA (xlfd
), motif
);
3598 char *fontsetname
= SSDATA (xlfd
);
3600 exprintf (&buf
, &bufsize
, line
, -1, "%s.pane.menubar*font%s: %s",
3601 myname
, suffix
, fontsetname
);
3602 XrmPutLineResource (&rdb
, line
);
3604 exprintf (&buf
, &bufsize
, line
, -1, "%s.%s*font%s: %s",
3605 myname
, popup_path
, suffix
, fontsetname
);
3606 XrmPutLineResource (&rdb
, line
);
3608 if (fontsetname
!= SSDATA (xlfd
))
3609 xfree (fontsetname
);
3613 if (changed_p
&& f
->output_data
.x
->menubar_widget
)
3614 free_frame_menubar (f
);
3621 #endif /* HAVE_X_WINDOWS && USE_X_TOOLKIT */
3624 DEFUN ("face-attribute-relative-p", Fface_attribute_relative_p
,
3625 Sface_attribute_relative_p
,
3627 doc
: /* Check whether a face attribute value is relative.
3628 Specifically, this function returns t if the attribute ATTRIBUTE
3629 with the value VALUE is relative.
3631 A relative value is one that doesn't entirely override whatever is
3632 inherited from another face. For most possible attributes,
3633 the only relative value that users see is `unspecified'.
3634 However, for :height, floating point values are also relative. */)
3635 (Lisp_Object attribute
, Lisp_Object value
)
3637 if (EQ (value
, Qunspecified
) || (EQ (value
, QCignore_defface
)))
3639 else if (EQ (attribute
, QCheight
))
3640 return INTEGERP (value
) ? Qnil
: Qt
;
3645 DEFUN ("merge-face-attribute", Fmerge_face_attribute
, Smerge_face_attribute
,
3647 doc
: /* Return face ATTRIBUTE VALUE1 merged with VALUE2.
3648 If VALUE1 or VALUE2 are absolute (see `face-attribute-relative-p'), then
3649 the result will be absolute, otherwise it will be relative. */)
3650 (Lisp_Object attribute
, Lisp_Object value1
, Lisp_Object value2
)
3652 if (EQ (value1
, Qunspecified
) || EQ (value1
, QCignore_defface
))
3654 else if (EQ (attribute
, QCheight
))
3655 return merge_face_heights (value1
, value2
, value1
);
3661 DEFUN ("internal-get-lisp-face-attribute", Finternal_get_lisp_face_attribute
,
3662 Sinternal_get_lisp_face_attribute
,
3664 doc
: /* Return face attribute KEYWORD of face SYMBOL.
3665 If SYMBOL does not name a valid Lisp face or KEYWORD isn't a valid
3666 face attribute name, signal an error.
3667 If the optional argument FRAME is given, report on face SYMBOL in that
3668 frame. If FRAME is t, report on the defaults for face SYMBOL (for new
3669 frames). If FRAME is omitted or nil, use the selected frame. */)
3670 (Lisp_Object symbol
, Lisp_Object keyword
, Lisp_Object frame
)
3672 struct frame
*f
= EQ (frame
, Qt
) ? NULL
: decode_live_frame (frame
);
3673 Lisp_Object lface
= lface_from_face_name (f
, symbol
, 1), value
= Qnil
;
3675 CHECK_SYMBOL (symbol
);
3676 CHECK_SYMBOL (keyword
);
3678 if (EQ (keyword
, QCfamily
))
3679 value
= LFACE_FAMILY (lface
);
3680 else if (EQ (keyword
, QCfoundry
))
3681 value
= LFACE_FOUNDRY (lface
);
3682 else if (EQ (keyword
, QCheight
))
3683 value
= LFACE_HEIGHT (lface
);
3684 else if (EQ (keyword
, QCweight
))
3685 value
= LFACE_WEIGHT (lface
);
3686 else if (EQ (keyword
, QCslant
))
3687 value
= LFACE_SLANT (lface
);
3688 else if (EQ (keyword
, QCunderline
))
3689 value
= LFACE_UNDERLINE (lface
);
3690 else if (EQ (keyword
, QCoverline
))
3691 value
= LFACE_OVERLINE (lface
);
3692 else if (EQ (keyword
, QCstrike_through
))
3693 value
= LFACE_STRIKE_THROUGH (lface
);
3694 else if (EQ (keyword
, QCbox
))
3695 value
= LFACE_BOX (lface
);
3696 else if (EQ (keyword
, QCinverse_video
)
3697 || EQ (keyword
, QCreverse_video
))
3698 value
= LFACE_INVERSE (lface
);
3699 else if (EQ (keyword
, QCforeground
))
3700 value
= LFACE_FOREGROUND (lface
);
3701 else if (EQ (keyword
, QCdistant_foreground
))
3702 value
= LFACE_DISTANT_FOREGROUND (lface
);
3703 else if (EQ (keyword
, QCbackground
))
3704 value
= LFACE_BACKGROUND (lface
);
3705 else if (EQ (keyword
, QCstipple
))
3706 value
= LFACE_STIPPLE (lface
);
3707 else if (EQ (keyword
, QCwidth
))
3708 value
= LFACE_SWIDTH (lface
);
3709 else if (EQ (keyword
, QCinherit
))
3710 value
= LFACE_INHERIT (lface
);
3711 else if (EQ (keyword
, QCfont
))
3712 value
= LFACE_FONT (lface
);
3713 else if (EQ (keyword
, QCfontset
))
3714 value
= LFACE_FONTSET (lface
);
3716 signal_error ("Invalid face attribute name", keyword
);
3718 if (IGNORE_DEFFACE_P (value
))
3719 return Qunspecified
;
3725 DEFUN ("internal-lisp-face-attribute-values",
3726 Finternal_lisp_face_attribute_values
,
3727 Sinternal_lisp_face_attribute_values
, 1, 1, 0,
3728 doc
: /* Return a list of valid discrete values for face attribute ATTR.
3729 Value is nil if ATTR doesn't have a discrete set of valid values. */)
3732 Lisp_Object result
= Qnil
;
3734 CHECK_SYMBOL (attr
);
3736 if (EQ (attr
, QCunderline
) || EQ (attr
, QCoverline
)
3737 || EQ (attr
, QCstrike_through
)
3738 || EQ (attr
, QCinverse_video
) || EQ (attr
, QCreverse_video
))
3739 result
= list2 (Qt
, Qnil
);
3745 DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face
,
3746 Sinternal_merge_in_global_face
, 2, 2, 0,
3747 doc
: /* Add attributes from frame-default definition of FACE to FACE on FRAME.
3748 Default face attributes override any local face attributes. */)
3749 (Lisp_Object face
, Lisp_Object frame
)
3752 Lisp_Object global_lface
, local_lface
, *gvec
, *lvec
;
3753 struct frame
*f
= XFRAME (frame
);
3755 CHECK_LIVE_FRAME (frame
);
3756 global_lface
= lface_from_face_name (NULL
, face
, 1);
3757 local_lface
= lface_from_face_name (f
, face
, 0);
3758 if (NILP (local_lface
))
3759 local_lface
= Finternal_make_lisp_face (face
, frame
);
3761 /* Make every specified global attribute override the local one.
3762 BEWARE!! This is only used from `face-set-after-frame-default' where
3763 the local frame is defined from default specs in `face-defface-spec'
3764 and those should be overridden by global settings. Hence the strange
3765 "global before local" priority. */
3766 lvec
= XVECTOR (local_lface
)->contents
;
3767 gvec
= XVECTOR (global_lface
)->contents
;
3768 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
3769 if (IGNORE_DEFFACE_P (gvec
[i
]))
3770 ASET (local_lface
, i
, Qunspecified
);
3771 else if (! UNSPECIFIEDP (gvec
[i
]))
3772 ASET (local_lface
, i
, AREF (global_lface
, i
));
3774 /* If the default face was changed, update the face cache and the
3775 `font' frame parameter. */
3776 if (EQ (face
, Qdefault
))
3778 struct face_cache
*c
= FRAME_FACE_CACHE (f
);
3779 struct face
*newface
, *oldface
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
3780 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
3782 /* This can be NULL (e.g., in batch mode). */
3785 /* Ensure that the face vector is fully specified by merging
3786 the previously-cached vector. */
3787 memcpy (attrs
, oldface
->lface
, sizeof attrs
);
3788 merge_face_vectors (f
, lvec
, attrs
, 0);
3789 vcopy (local_lface
, 0, attrs
, LFACE_VECTOR_SIZE
);
3790 newface
= realize_face (c
, lvec
, DEFAULT_FACE_ID
);
3792 if ((! UNSPECIFIEDP (gvec
[LFACE_FAMILY_INDEX
])
3793 || ! UNSPECIFIEDP (gvec
[LFACE_FOUNDRY_INDEX
])
3794 || ! UNSPECIFIEDP (gvec
[LFACE_HEIGHT_INDEX
])
3795 || ! UNSPECIFIEDP (gvec
[LFACE_WEIGHT_INDEX
])
3796 || ! UNSPECIFIEDP (gvec
[LFACE_SLANT_INDEX
])
3797 || ! UNSPECIFIEDP (gvec
[LFACE_SWIDTH_INDEX
])
3798 || ! UNSPECIFIEDP (gvec
[LFACE_FONT_INDEX
]))
3801 Lisp_Object name
= newface
->font
->props
[FONT_NAME_INDEX
];
3802 Fmodify_frame_parameters (frame
, list1 (Fcons (Qfont
, name
)));
3805 if (STRINGP (gvec
[LFACE_FOREGROUND_INDEX
]))
3806 Fmodify_frame_parameters (frame
,
3807 list1 (Fcons (Qforeground_color
,
3808 gvec
[LFACE_FOREGROUND_INDEX
])));
3810 if (STRINGP (gvec
[LFACE_BACKGROUND_INDEX
]))
3811 Fmodify_frame_parameters (frame
,
3812 list1 (Fcons (Qbackground_color
,
3813 gvec
[LFACE_BACKGROUND_INDEX
])));
3821 /* The following function is implemented for compatibility with 20.2.
3822 The function is used in x-resolve-fonts when it is asked to
3823 return fonts with the same size as the font of a face. This is
3824 done in fontset.el. */
3826 DEFUN ("face-font", Fface_font
, Sface_font
, 1, 3, 0,
3827 doc
: /* Return the font name of face FACE, or nil if it is unspecified.
3828 The font name is, by default, for ASCII characters.
3829 If the optional argument FRAME is given, report on face FACE in that frame.
3830 If FRAME is t, report on the defaults for face FACE (for new frames).
3831 The font default for a face is either nil, or a list
3832 of the form (bold), (italic) or (bold italic).
3833 If FRAME is omitted or nil, use the selected frame. And, in this case,
3834 if the optional third argument CHARACTER is given,
3835 return the font name used for CHARACTER. */)
3836 (Lisp_Object face
, Lisp_Object frame
, Lisp_Object character
)
3840 Lisp_Object result
= Qnil
;
3841 Lisp_Object lface
= lface_from_face_name (NULL
, face
, 1);
3843 if (!UNSPECIFIEDP (LFACE_WEIGHT (lface
))
3844 && !EQ (LFACE_WEIGHT (lface
), Qnormal
))
3845 result
= Fcons (Qbold
, result
);
3847 if (!UNSPECIFIEDP (LFACE_SLANT (lface
))
3848 && !EQ (LFACE_SLANT (lface
), Qnormal
))
3849 result
= Fcons (Qitalic
, result
);
3855 struct frame
*f
= decode_live_frame (frame
);
3856 int face_id
= lookup_named_face (f
, face
, 1);
3857 struct face
*fface
= FACE_FROM_ID (f
, face_id
);
3861 #ifdef HAVE_WINDOW_SYSTEM
3862 if (FRAME_WINDOW_P (f
) && !NILP (character
))
3864 CHECK_CHARACTER (character
);
3865 face_id
= FACE_FOR_CHAR (f
, fface
, XINT (character
), -1, Qnil
);
3866 fface
= FACE_FROM_ID (f
, face_id
);
3869 ? fface
->font
->props
[FONT_NAME_INDEX
]
3871 #else /* !HAVE_WINDOW_SYSTEM */
3872 return build_string (FRAME_MSDOS_P (f
)
3874 : FRAME_W32_P (f
) ? "w32term"
3881 /* Compare face-attribute values v1 and v2 for equality. Value is non-zero if
3882 all attributes are `equal'. Tries to be fast because this function
3883 is called quite often. */
3886 face_attr_equal_p (Lisp_Object v1
, Lisp_Object v2
)
3888 /* Type can differ, e.g. when one attribute is unspecified, i.e. nil,
3889 and the other is specified. */
3890 if (XTYPE (v1
) != XTYPE (v2
))
3899 if (SBYTES (v1
) != SBYTES (v2
))
3902 return memcmp (SDATA (v1
), SDATA (v2
), SBYTES (v1
)) == 0;
3909 return !NILP (Fequal (v1
, v2
));
3914 /* Compare face vectors V1 and V2 for equality. Value is non-zero if
3915 all attributes are `equal'. Tries to be fast because this function
3916 is called quite often. */
3919 lface_equal_p (Lisp_Object
*v1
, Lisp_Object
*v2
)
3924 for (i
= 1; i
< LFACE_VECTOR_SIZE
&& equal_p
; ++i
)
3925 equal_p
= face_attr_equal_p (v1
[i
], v2
[i
]);
3931 DEFUN ("internal-lisp-face-equal-p", Finternal_lisp_face_equal_p
,
3932 Sinternal_lisp_face_equal_p
, 2, 3, 0,
3933 doc
: /* True if FACE1 and FACE2 are equal.
3934 If the optional argument FRAME is given, report on FACE1 and FACE2 in that frame.
3935 If FRAME is t, report on the defaults for FACE1 and FACE2 (for new frames).
3936 If FRAME is omitted or nil, use the selected frame. */)
3937 (Lisp_Object face1
, Lisp_Object face2
, Lisp_Object frame
)
3941 Lisp_Object lface1
, lface2
;
3943 /* Don't use decode_window_system_frame here because this function
3944 is called before X frames exist. At that time, if FRAME is nil,
3945 selected_frame will be used which is the frame dumped with
3946 Emacs. That frame is not an X frame. */
3947 f
= EQ (frame
, Qt
) ? NULL
: decode_live_frame (frame
);
3949 lface1
= lface_from_face_name (f
, face1
, 1);
3950 lface2
= lface_from_face_name (f
, face2
, 1);
3951 equal_p
= lface_equal_p (XVECTOR (lface1
)->contents
,
3952 XVECTOR (lface2
)->contents
);
3953 return equal_p
? Qt
: Qnil
;
3957 DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p
,
3958 Sinternal_lisp_face_empty_p
, 1, 2, 0,
3959 doc
: /* True if FACE has no attribute specified.
3960 If the optional argument FRAME is given, report on face FACE in that frame.
3961 If FRAME is t, report on the defaults for face FACE (for new frames).
3962 If FRAME is omitted or nil, use the selected frame. */)
3963 (Lisp_Object face
, Lisp_Object frame
)
3965 struct frame
*f
= EQ (frame
, Qt
) ? NULL
: decode_live_frame (frame
);
3966 Lisp_Object lface
= lface_from_face_name (f
, face
, 1);
3969 for (i
= 1; i
< LFACE_VECTOR_SIZE
; ++i
)
3970 if (!UNSPECIFIEDP (AREF (lface
, i
)))
3973 return i
== LFACE_VECTOR_SIZE
? Qt
: Qnil
;
3977 DEFUN ("frame-face-alist", Fframe_face_alist
, Sframe_face_alist
,
3979 doc
: /* Return an alist of frame-local faces defined on FRAME.
3980 For internal use only. */)
3983 return decode_live_frame (frame
)->face_alist
;
3987 /* Return a hash code for Lisp string STRING with case ignored. Used
3988 below in computing a hash value for a Lisp face. */
3991 hash_string_case_insensitive (Lisp_Object string
)
3993 const unsigned char *s
;
3995 eassert (STRINGP (string
));
3996 for (s
= SDATA (string
); *s
; ++s
)
3997 hash
= (hash
<< 1) ^ c_tolower (*s
);
4002 /* Return a hash code for face attribute vector V. */
4005 lface_hash (Lisp_Object
*v
)
4007 return (hash_string_case_insensitive (v
[LFACE_FAMILY_INDEX
])
4008 ^ hash_string_case_insensitive (v
[LFACE_FOUNDRY_INDEX
])
4009 ^ hash_string_case_insensitive (v
[LFACE_FOREGROUND_INDEX
])
4010 ^ hash_string_case_insensitive (v
[LFACE_BACKGROUND_INDEX
])
4011 ^ XHASH (v
[LFACE_WEIGHT_INDEX
])
4012 ^ XHASH (v
[LFACE_SLANT_INDEX
])
4013 ^ XHASH (v
[LFACE_SWIDTH_INDEX
])
4014 ^ XHASH (v
[LFACE_HEIGHT_INDEX
]));
4017 #ifdef HAVE_WINDOW_SYSTEM
4019 /* Return non-zero if LFACE1 and LFACE2 specify the same font (without
4020 considering charsets/registries). They do if they specify the same
4021 family, point size, weight, width, slant, and font. Both
4022 LFACE1 and LFACE2 must be fully-specified. */
4025 lface_same_font_attributes_p (Lisp_Object
*lface1
, Lisp_Object
*lface2
)
4027 eassert (lface_fully_specified_p (lface1
)
4028 && lface_fully_specified_p (lface2
));
4029 return (xstrcasecmp (SSDATA (lface1
[LFACE_FAMILY_INDEX
]),
4030 SSDATA (lface2
[LFACE_FAMILY_INDEX
])) == 0
4031 && xstrcasecmp (SSDATA (lface1
[LFACE_FOUNDRY_INDEX
]),
4032 SSDATA (lface2
[LFACE_FOUNDRY_INDEX
])) == 0
4033 && EQ (lface1
[LFACE_HEIGHT_INDEX
], lface2
[LFACE_HEIGHT_INDEX
])
4034 && EQ (lface1
[LFACE_SWIDTH_INDEX
], lface2
[LFACE_SWIDTH_INDEX
])
4035 && EQ (lface1
[LFACE_WEIGHT_INDEX
], lface2
[LFACE_WEIGHT_INDEX
])
4036 && EQ (lface1
[LFACE_SLANT_INDEX
], lface2
[LFACE_SLANT_INDEX
])
4037 && EQ (lface1
[LFACE_FONT_INDEX
], lface2
[LFACE_FONT_INDEX
])
4038 && (EQ (lface1
[LFACE_FONTSET_INDEX
], lface2
[LFACE_FONTSET_INDEX
])
4039 || (STRINGP (lface1
[LFACE_FONTSET_INDEX
])
4040 && STRINGP (lface2
[LFACE_FONTSET_INDEX
])
4041 && ! xstrcasecmp (SSDATA (lface1
[LFACE_FONTSET_INDEX
]),
4042 SSDATA (lface2
[LFACE_FONTSET_INDEX
]))))
4046 #endif /* HAVE_WINDOW_SYSTEM */
4048 /***********************************************************************
4050 ***********************************************************************/
4052 /* Allocate and return a new realized face for Lisp face attribute
4055 static struct face
*
4056 make_realized_face (Lisp_Object
*attr
)
4058 enum { off
= offsetof (struct face
, id
) };
4059 struct face
*face
= xmalloc (sizeof *face
);
4061 memcpy (face
->lface
, attr
, sizeof face
->lface
);
4062 memset (&face
->id
, 0, sizeof *face
- off
);
4063 face
->ascii_face
= face
;
4069 /* Free realized face FACE, including its X resources. FACE may
4073 free_realized_face (struct frame
*f
, struct face
*face
)
4077 #ifdef HAVE_WINDOW_SYSTEM
4078 if (FRAME_WINDOW_P (f
))
4080 /* Free fontset of FACE if it is ASCII face. */
4081 if (face
->fontset
>= 0 && face
== face
->ascii_face
)
4082 free_face_fontset (f
, face
);
4087 font_done_for_face (f
, face
);
4088 x_free_gc (f
, face
->gc
);
4092 #ifdef HAVE_X_WINDOWS
4093 free_face_colors (f
, face
);
4094 #endif /* HAVE_X_WINDOWS */
4095 x_destroy_bitmap (f
, face
->stipple
);
4097 #endif /* HAVE_WINDOW_SYSTEM */
4104 /* Prepare face FACE for subsequent display on frame F. This
4105 allocated GCs if they haven't been allocated yet or have been freed
4106 by clearing the face cache. */
4109 prepare_face_for_display (struct frame
*f
, struct face
*face
)
4111 #ifdef HAVE_WINDOW_SYSTEM
4112 eassert (FRAME_WINDOW_P (f
));
4117 unsigned long mask
= GCForeground
| GCBackground
| GCGraphicsExposures
;
4119 xgcv
.foreground
= face
->foreground
;
4120 xgcv
.background
= face
->background
;
4121 #ifdef HAVE_X_WINDOWS
4122 xgcv
.graphics_exposures
= False
;
4126 #ifdef HAVE_X_WINDOWS
4129 xgcv
.fill_style
= FillOpaqueStippled
;
4130 xgcv
.stipple
= x_bitmap_pixmap (f
, face
->stipple
);
4131 mask
|= GCFillStyle
| GCStipple
;
4134 face
->gc
= x_create_gc (f
, mask
, &xgcv
);
4136 font_prepare_for_face (f
, face
);
4139 #endif /* HAVE_WINDOW_SYSTEM */
4143 /* Returns the `distance' between the colors X and Y. */
4146 color_distance (XColor
*x
, XColor
*y
)
4148 /* This formula is from a paper titled `Colour metric' by Thiadmer Riemersma.
4149 Quoting from that paper:
4151 This formula has results that are very close to L*u*v* (with the
4152 modified lightness curve) and, more importantly, it is a more even
4153 algorithm: it does not have a range of colors where it suddenly
4154 gives far from optimal results.
4156 See <http://www.compuphase.com/cmetric.htm> for more info. */
4158 long r
= (x
->red
- y
->red
) >> 8;
4159 long g
= (x
->green
- y
->green
) >> 8;
4160 long b
= (x
->blue
- y
->blue
) >> 8;
4161 long r_mean
= (x
->red
+ y
->red
) >> 9;
4164 (((512 + r_mean
) * r
* r
) >> 8)
4166 + (((767 - r_mean
) * b
* b
) >> 8);
4170 DEFUN ("color-distance", Fcolor_distance
, Scolor_distance
, 2, 3, 0,
4171 doc
: /* Return an integer distance between COLOR1 and COLOR2 on FRAME.
4172 COLOR1 and COLOR2 may be either strings containing the color name,
4173 or lists of the form (RED GREEN BLUE).
4174 If FRAME is unspecified or nil, the current frame is used. */)
4175 (Lisp_Object color1
, Lisp_Object color2
, Lisp_Object frame
)
4177 struct frame
*f
= decode_live_frame (frame
);
4178 XColor cdef1
, cdef2
;
4180 if (!(CONSP (color1
) && parse_rgb_list (color1
, &cdef1
))
4181 && !(STRINGP (color1
) && defined_color (f
, SSDATA (color1
), &cdef1
, 0)))
4182 signal_error ("Invalid color", color1
);
4183 if (!(CONSP (color2
) && parse_rgb_list (color2
, &cdef2
))
4184 && !(STRINGP (color2
) && defined_color (f
, SSDATA (color2
), &cdef2
, 0)))
4185 signal_error ("Invalid color", color2
);
4187 return make_number (color_distance (&cdef1
, &cdef2
));
4191 /***********************************************************************
4193 ***********************************************************************/
4195 /* Return a new face cache for frame F. */
4197 static struct face_cache
*
4198 make_face_cache (struct frame
*f
)
4200 struct face_cache
*c
= xmalloc (sizeof *c
);
4202 c
->buckets
= xzalloc (FACE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
);
4205 c
->faces_by_id
= xmalloc (c
->size
* sizeof *c
->faces_by_id
);
4207 c
->menu_face_changed_p
= menu_face_changed_default
;
4211 #ifdef HAVE_WINDOW_SYSTEM
4213 /* Clear out all graphics contexts for all realized faces, except for
4214 the basic faces. This should be done from time to time just to avoid
4215 keeping too many graphics contexts that are no longer needed. */
4218 clear_face_gcs (struct face_cache
*c
)
4220 if (c
&& FRAME_WINDOW_P (c
->f
))
4223 for (i
= BASIC_FACE_ID_SENTINEL
; i
< c
->used
; ++i
)
4225 struct face
*face
= c
->faces_by_id
[i
];
4226 if (face
&& face
->gc
)
4230 font_done_for_face (c
->f
, face
);
4231 x_free_gc (c
->f
, face
->gc
);
4239 #endif /* HAVE_WINDOW_SYSTEM */
4241 /* Free all realized faces in face cache C, including basic faces.
4242 C may be null. If faces are freed, make sure the frame's current
4243 matrix is marked invalid, so that a display caused by an expose
4244 event doesn't try to use faces we destroyed. */
4247 free_realized_faces (struct face_cache
*c
)
4252 struct frame
*f
= c
->f
;
4254 /* We must block input here because we can't process X events
4255 safely while only some faces are freed, or when the frame's
4256 current matrix still references freed faces. */
4259 for (i
= 0; i
< c
->used
; ++i
)
4261 free_realized_face (f
, c
->faces_by_id
[i
]);
4262 c
->faces_by_id
[i
] = NULL
;
4266 size
= FACE_CACHE_BUCKETS_SIZE
* sizeof *c
->buckets
;
4267 memset (c
->buckets
, 0, size
);
4269 /* Must do a thorough redisplay the next time. Mark current
4270 matrices as invalid because they will reference faces freed
4271 above. This function is also called when a frame is
4272 destroyed. In this case, the root window of F is nil. */
4273 if (WINDOWP (f
->root_window
))
4275 clear_current_matrices (f
);
4276 ++windows_or_buffers_changed
;
4284 /* Free all realized faces on FRAME or on all frames if FRAME is nil.
4285 This is done after attributes of a named face have been changed,
4286 because we can't tell which realized faces depend on that face. */
4289 free_all_realized_faces (Lisp_Object frame
)
4294 FOR_EACH_FRAME (rest
, frame
)
4295 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame
)));
4298 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame
)));
4302 /* Free face cache C and faces in it, including their X resources. */
4305 free_face_cache (struct face_cache
*c
)
4309 free_realized_faces (c
);
4311 xfree (c
->faces_by_id
);
4317 /* Cache realized face FACE in face cache C. HASH is the hash value
4318 of FACE. If FACE is for ASCII characters (i.e. FACE->ascii_face ==
4319 FACE), insert the new face to the beginning of the collision list
4320 of the face hash table of C. Otherwise, add the new face to the
4321 end of the collision list. This way, lookup_face can quickly find
4322 that a requested face is not cached. */
4325 cache_face (struct face_cache
*c
, struct face
*face
, unsigned int hash
)
4327 int i
= hash
% FACE_CACHE_BUCKETS_SIZE
;
4331 if (face
->ascii_face
!= face
)
4333 struct face
*last
= c
->buckets
[i
];
4344 c
->buckets
[i
] = face
;
4345 face
->prev
= face
->next
= NULL
;
4351 face
->next
= c
->buckets
[i
];
4353 face
->next
->prev
= face
;
4354 c
->buckets
[i
] = face
;
4357 /* Find a free slot in C->faces_by_id and use the index of the free
4358 slot as FACE->id. */
4359 for (i
= 0; i
< c
->used
; ++i
)
4360 if (c
->faces_by_id
[i
] == NULL
)
4365 /* Check that FACE got a unique id. */
4370 for (j
= n
= 0; j
< FACE_CACHE_BUCKETS_SIZE
; ++j
)
4371 for (face1
= c
->buckets
[j
]; face1
; face1
= face1
->next
)
4377 #endif /* GLYPH_DEBUG */
4379 /* Maybe enlarge C->faces_by_id. */
4382 if (c
->used
== c
->size
)
4383 c
->faces_by_id
= xpalloc (c
->faces_by_id
, &c
->size
, 1, MAX_FACE_ID
,
4384 sizeof *c
->faces_by_id
);
4388 c
->faces_by_id
[i
] = face
;
4392 /* Remove face FACE from cache C. */
4395 uncache_face (struct face_cache
*c
, struct face
*face
)
4397 int i
= face
->hash
% FACE_CACHE_BUCKETS_SIZE
;
4400 face
->prev
->next
= face
->next
;
4402 c
->buckets
[i
] = face
->next
;
4405 face
->next
->prev
= face
->prev
;
4407 c
->faces_by_id
[face
->id
] = NULL
;
4408 if (face
->id
== c
->used
)
4413 /* Look up a realized face with face attributes ATTR in the face cache
4414 of frame F. The face will be used to display ASCII characters.
4415 Value is the ID of the face found. If no suitable face is found,
4416 realize a new one. */
4419 lookup_face (struct frame
*f
, Lisp_Object
*attr
)
4421 struct face_cache
*cache
= FRAME_FACE_CACHE (f
);
4426 eassert (cache
!= NULL
);
4427 check_lface_attrs (attr
);
4429 /* Look up ATTR in the face cache. */
4430 hash
= lface_hash (attr
);
4431 i
= hash
% FACE_CACHE_BUCKETS_SIZE
;
4433 for (face
= cache
->buckets
[i
]; face
; face
= face
->next
)
4435 if (face
->ascii_face
!= face
)
4437 /* There's no more ASCII face. */
4441 if (face
->hash
== hash
4442 && lface_equal_p (face
->lface
, attr
))
4446 /* If not found, realize a new face. */
4448 face
= realize_face (cache
, attr
, -1);
4451 eassert (face
== FACE_FROM_ID (f
, face
->id
));
4452 #endif /* GLYPH_DEBUG */
4457 #ifdef HAVE_WINDOW_SYSTEM
4458 /* Look up a realized face that has the same attributes as BASE_FACE
4459 except for the font in the face cache of frame F. If FONT-OBJECT
4460 is not nil, it is an already opened font. If FONT-OBJECT is nil,
4461 the face has no font. Value is the ID of the face found. If no
4462 suitable face is found, realize a new one. */
4465 face_for_font (struct frame
*f
, Lisp_Object font_object
, struct face
*base_face
)
4467 struct face_cache
*cache
= FRAME_FACE_CACHE (f
);
4472 eassert (cache
!= NULL
);
4473 base_face
= base_face
->ascii_face
;
4474 hash
= lface_hash (base_face
->lface
);
4475 i
= hash
% FACE_CACHE_BUCKETS_SIZE
;
4477 for (face
= cache
->buckets
[i
]; face
; face
= face
->next
)
4479 if (face
->ascii_face
== face
)
4481 if (face
->ascii_face
== base_face
4482 && face
->font
== (NILP (font_object
) ? NULL
4483 : XFONT_OBJECT (font_object
))
4484 && lface_equal_p (face
->lface
, base_face
->lface
))
4488 /* If not found, realize a new face. */
4489 face
= realize_non_ascii_face (f
, font_object
, base_face
);
4492 #endif /* HAVE_WINDOW_SYSTEM */
4494 /* Return the face id of the realized face for named face SYMBOL on
4495 frame F suitable for displaying ASCII characters. Value is -1 if
4496 the face couldn't be determined, which might happen if the default
4497 face isn't realized and cannot be realized. */
4500 lookup_named_face (struct frame
*f
, Lisp_Object symbol
, int signal_p
)
4502 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
4503 Lisp_Object symbol_attrs
[LFACE_VECTOR_SIZE
];
4504 struct face
*default_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
4506 if (default_face
== NULL
)
4508 if (!realize_basic_faces (f
))
4510 default_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
4511 if (default_face
== NULL
)
4512 emacs_abort (); /* realize_basic_faces must have set it up */
4515 if (! get_lface_attributes (f
, symbol
, symbol_attrs
, signal_p
, 0))
4518 memcpy (attrs
, default_face
->lface
, sizeof attrs
);
4519 merge_face_vectors (f
, symbol_attrs
, attrs
, 0);
4521 return lookup_face (f
, attrs
);
4525 /* Return the display face-id of the basic face whose canonical face-id
4526 is FACE_ID. The return value will usually simply be FACE_ID, unless that
4527 basic face has bee remapped via Vface_remapping_alist. This function is
4528 conservative: if something goes wrong, it will simply return FACE_ID
4529 rather than signal an error. */
4532 lookup_basic_face (struct frame
*f
, int face_id
)
4534 Lisp_Object name
, mapping
;
4535 int remapped_face_id
;
4537 if (NILP (Vface_remapping_alist
))
4538 return face_id
; /* Nothing to do. */
4542 case DEFAULT_FACE_ID
: name
= Qdefault
; break;
4543 case MODE_LINE_FACE_ID
: name
= Qmode_line
; break;
4544 case MODE_LINE_INACTIVE_FACE_ID
: name
= Qmode_line_inactive
; break;
4545 case HEADER_LINE_FACE_ID
: name
= Qheader_line
; break;
4546 case TOOL_BAR_FACE_ID
: name
= Qtool_bar
; break;
4547 case FRINGE_FACE_ID
: name
= Qfringe
; break;
4548 case SCROLL_BAR_FACE_ID
: name
= Qscroll_bar
; break;
4549 case BORDER_FACE_ID
: name
= Qborder
; break;
4550 case CURSOR_FACE_ID
: name
= Qcursor
; break;
4551 case MOUSE_FACE_ID
: name
= Qmouse
; break;
4552 case MENU_FACE_ID
: name
= Qmenu
; break;
4555 emacs_abort (); /* the caller is supposed to pass us a basic face id */
4558 /* Do a quick scan through Vface_remapping_alist, and return immediately
4559 if there is no remapping for face NAME. This is just an optimization
4560 for the very common no-remapping case. */
4561 mapping
= assq_no_quit (name
, Vface_remapping_alist
);
4563 return face_id
; /* Give up. */
4565 /* If there is a remapping entry, lookup the face using NAME, which will
4566 handle the remapping too. */
4567 remapped_face_id
= lookup_named_face (f
, name
, 0);
4568 if (remapped_face_id
< 0)
4569 return face_id
; /* Give up. */
4571 return remapped_face_id
;
4575 /* Return a face for charset ASCII that is like the face with id
4576 FACE_ID on frame F, but has a font that is STEPS steps smaller.
4577 STEPS < 0 means larger. Value is the id of the face. */
4580 smaller_face (struct frame
*f
, int face_id
, int steps
)
4582 #ifdef HAVE_WINDOW_SYSTEM
4584 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
4585 int pt
, last_pt
, last_height
;
4588 struct face
*new_face
;
4590 /* If not called for an X frame, just return the original face. */
4591 if (FRAME_TERMCAP_P (f
))
4594 /* Try in increments of 1/2 pt. */
4595 delta
= steps
< 0 ? 5 : -5;
4596 steps
= eabs (steps
);
4598 face
= FACE_FROM_ID (f
, face_id
);
4599 memcpy (attrs
, face
->lface
, sizeof attrs
);
4600 pt
= last_pt
= XFASTINT (attrs
[LFACE_HEIGHT_INDEX
]);
4601 new_face_id
= face_id
;
4602 last_height
= FONT_HEIGHT (face
->font
);
4606 /* Give up if we cannot find a font within 10pt. */
4607 && eabs (last_pt
- pt
) < 100)
4609 /* Look up a face for a slightly smaller/larger font. */
4611 attrs
[LFACE_HEIGHT_INDEX
] = make_number (pt
);
4612 new_face_id
= lookup_face (f
, attrs
);
4613 new_face
= FACE_FROM_ID (f
, new_face_id
);
4615 /* If height changes, count that as one step. */
4616 if ((delta
< 0 && FONT_HEIGHT (new_face
->font
) < last_height
)
4617 || (delta
> 0 && FONT_HEIGHT (new_face
->font
) > last_height
))
4620 last_height
= FONT_HEIGHT (new_face
->font
);
4627 #else /* not HAVE_WINDOW_SYSTEM */
4631 #endif /* not HAVE_WINDOW_SYSTEM */
4635 /* Return a face for charset ASCII that is like the face with id
4636 FACE_ID on frame F, but has height HEIGHT. */
4639 face_with_height (struct frame
*f
, int face_id
, int height
)
4641 #ifdef HAVE_WINDOW_SYSTEM
4643 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
4645 if (FRAME_TERMCAP_P (f
)
4649 face
= FACE_FROM_ID (f
, face_id
);
4650 memcpy (attrs
, face
->lface
, sizeof attrs
);
4651 attrs
[LFACE_HEIGHT_INDEX
] = make_number (height
);
4652 font_clear_prop (attrs
, FONT_SIZE_INDEX
);
4653 face_id
= lookup_face (f
, attrs
);
4654 #endif /* HAVE_WINDOW_SYSTEM */
4660 /* Return the face id of the realized face for named face SYMBOL on
4661 frame F suitable for displaying ASCII characters, and use
4662 attributes of the face FACE_ID for attributes that aren't
4663 completely specified by SYMBOL. This is like lookup_named_face,
4664 except that the default attributes come from FACE_ID, not from the
4665 default face. FACE_ID is assumed to be already realized. */
4668 lookup_derived_face (struct frame
*f
, Lisp_Object symbol
, int face_id
,
4671 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
4672 Lisp_Object symbol_attrs
[LFACE_VECTOR_SIZE
];
4673 struct face
*default_face
= FACE_FROM_ID (f
, face_id
);
4678 if (!get_lface_attributes (f
, symbol
, symbol_attrs
, signal_p
, 0))
4681 memcpy (attrs
, default_face
->lface
, sizeof attrs
);
4682 merge_face_vectors (f
, symbol_attrs
, attrs
, 0);
4683 return lookup_face (f
, attrs
);
4686 DEFUN ("face-attributes-as-vector", Fface_attributes_as_vector
,
4687 Sface_attributes_as_vector
, 1, 1, 0,
4688 doc
: /* Return a vector of face attributes corresponding to PLIST. */)
4692 lface
= Fmake_vector (make_number (LFACE_VECTOR_SIZE
),
4694 merge_face_ref (XFRAME (selected_frame
), plist
, XVECTOR (lface
)->contents
,
4701 /***********************************************************************
4702 Face capability testing
4703 ***********************************************************************/
4706 /* If the distance (as returned by color_distance) between two colors is
4707 less than this, then they are considered the same, for determining
4708 whether a color is supported or not. The range of values is 0-65535. */
4710 #define TTY_SAME_COLOR_THRESHOLD 10000
4712 #ifdef HAVE_WINDOW_SYSTEM
4714 /* Return true if all the face attributes in ATTRS are supported
4715 on the window-system frame F.
4717 The definition of `supported' is somewhat heuristic, but basically means
4718 that a face containing all the attributes in ATTRS, when merged with the
4719 default face for display, can be represented in a way that's
4721 \(1) different in appearance than the default face, and
4722 \(2) `close in spirit' to what the attributes specify, if not exact. */
4725 x_supports_face_attributes_p (struct frame
*f
,
4726 Lisp_Object attrs
[LFACE_VECTOR_SIZE
],
4727 struct face
*def_face
)
4729 Lisp_Object
*def_attrs
= def_face
->lface
;
4731 /* Check that other specified attributes are different that the default
4733 if ((!UNSPECIFIEDP (attrs
[LFACE_UNDERLINE_INDEX
])
4734 && face_attr_equal_p (attrs
[LFACE_UNDERLINE_INDEX
],
4735 def_attrs
[LFACE_UNDERLINE_INDEX
]))
4736 || (!UNSPECIFIEDP (attrs
[LFACE_INVERSE_INDEX
])
4737 && face_attr_equal_p (attrs
[LFACE_INVERSE_INDEX
],
4738 def_attrs
[LFACE_INVERSE_INDEX
]))
4739 || (!UNSPECIFIEDP (attrs
[LFACE_FOREGROUND_INDEX
])
4740 && face_attr_equal_p (attrs
[LFACE_FOREGROUND_INDEX
],
4741 def_attrs
[LFACE_FOREGROUND_INDEX
]))
4742 || (!UNSPECIFIEDP (attrs
[LFACE_DISTANT_FOREGROUND_INDEX
])
4743 && face_attr_equal_p (attrs
[LFACE_DISTANT_FOREGROUND_INDEX
],
4744 def_attrs
[LFACE_DISTANT_FOREGROUND_INDEX
]))
4745 || (!UNSPECIFIEDP (attrs
[LFACE_BACKGROUND_INDEX
])
4746 && face_attr_equal_p (attrs
[LFACE_BACKGROUND_INDEX
],
4747 def_attrs
[LFACE_BACKGROUND_INDEX
]))
4748 || (!UNSPECIFIEDP (attrs
[LFACE_STIPPLE_INDEX
])
4749 && face_attr_equal_p (attrs
[LFACE_STIPPLE_INDEX
],
4750 def_attrs
[LFACE_STIPPLE_INDEX
]))
4751 || (!UNSPECIFIEDP (attrs
[LFACE_OVERLINE_INDEX
])
4752 && face_attr_equal_p (attrs
[LFACE_OVERLINE_INDEX
],
4753 def_attrs
[LFACE_OVERLINE_INDEX
]))
4754 || (!UNSPECIFIEDP (attrs
[LFACE_STRIKE_THROUGH_INDEX
])
4755 && face_attr_equal_p (attrs
[LFACE_STRIKE_THROUGH_INDEX
],
4756 def_attrs
[LFACE_STRIKE_THROUGH_INDEX
]))
4757 || (!UNSPECIFIEDP (attrs
[LFACE_BOX_INDEX
])
4758 && face_attr_equal_p (attrs
[LFACE_BOX_INDEX
],
4759 def_attrs
[LFACE_BOX_INDEX
])))
4762 /* Check font-related attributes, as those are the most commonly
4763 "unsupported" on a window-system (because of missing fonts). */
4764 if (!UNSPECIFIEDP (attrs
[LFACE_FAMILY_INDEX
])
4765 || !UNSPECIFIEDP (attrs
[LFACE_FOUNDRY_INDEX
])
4766 || !UNSPECIFIEDP (attrs
[LFACE_HEIGHT_INDEX
])
4767 || !UNSPECIFIEDP (attrs
[LFACE_WEIGHT_INDEX
])
4768 || !UNSPECIFIEDP (attrs
[LFACE_SLANT_INDEX
])
4769 || !UNSPECIFIEDP (attrs
[LFACE_SWIDTH_INDEX
]))
4773 Lisp_Object merged_attrs
[LFACE_VECTOR_SIZE
];
4776 memcpy (merged_attrs
, def_attrs
, sizeof merged_attrs
);
4778 merge_face_vectors (f
, attrs
, merged_attrs
, 0);
4780 face_id
= lookup_face (f
, merged_attrs
);
4781 face
= FACE_FROM_ID (f
, face_id
);
4784 error ("Cannot make face");
4786 /* If the font is the same, or no font is found, then not
4788 if (face
->font
== def_face
->font
4791 for (i
= FONT_TYPE_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
4792 if (! EQ (face
->font
->props
[i
], def_face
->font
->props
[i
]))
4796 if (i
< FONT_FOUNDRY_INDEX
|| i
> FONT_REGISTRY_INDEX
4797 || face
->font
->driver
->case_sensitive
)
4799 s1
= SYMBOL_NAME (face
->font
->props
[i
]);
4800 s2
= SYMBOL_NAME (def_face
->font
->props
[i
]);
4801 if (! EQ (Fcompare_strings (s1
, make_number (0), Qnil
,
4802 s2
, make_number (0), Qnil
, Qt
), Qt
))
4808 /* Everything checks out, this face is supported. */
4812 #endif /* HAVE_WINDOW_SYSTEM */
4814 /* Return true if all the face attributes in ATTRS are supported
4817 The definition of `supported' is somewhat heuristic, but basically means
4818 that a face containing all the attributes in ATTRS, when merged
4819 with the default face for display, can be represented in a way that's
4821 \(1) different in appearance than the default face, and
4822 \(2) `close in spirit' to what the attributes specify, if not exact.
4824 Point (2) implies that a `:weight black' attribute will be satisfied
4825 by any terminal that can display bold, and a `:foreground "yellow"' as
4826 long as the terminal can display a yellowish color, but `:slant italic'
4827 will _not_ be satisfied by the tty display code's automatic
4828 substitution of a `dim' face for italic. */
4831 tty_supports_face_attributes_p (struct frame
*f
,
4832 Lisp_Object attrs
[LFACE_VECTOR_SIZE
],
4833 struct face
*def_face
)
4836 Lisp_Object val
, fg
, bg
;
4837 XColor fg_tty_color
, fg_std_color
;
4838 XColor bg_tty_color
, bg_std_color
;
4839 unsigned test_caps
= 0;
4840 Lisp_Object
*def_attrs
= def_face
->lface
;
4842 /* First check some easy-to-check stuff; ttys support none of the
4843 following attributes, so we can just return false if any are requested
4844 (even if `nominal' values are specified, we should still return false,
4845 as that will be the same value that the default face uses). We
4846 consider :slant unsupportable on ttys, even though the face code
4847 actually `fakes' them using a dim attribute if possible. This is
4848 because the faked result is too different from what the face
4850 if (!UNSPECIFIEDP (attrs
[LFACE_FAMILY_INDEX
])
4851 || !UNSPECIFIEDP (attrs
[LFACE_FOUNDRY_INDEX
])
4852 || !UNSPECIFIEDP (attrs
[LFACE_STIPPLE_INDEX
])
4853 || !UNSPECIFIEDP (attrs
[LFACE_HEIGHT_INDEX
])
4854 || !UNSPECIFIEDP (attrs
[LFACE_SWIDTH_INDEX
])
4855 || !UNSPECIFIEDP (attrs
[LFACE_OVERLINE_INDEX
])
4856 || !UNSPECIFIEDP (attrs
[LFACE_STRIKE_THROUGH_INDEX
])
4857 || !UNSPECIFIEDP (attrs
[LFACE_BOX_INDEX
]))
4860 /* Test for terminal `capabilities' (non-color character attributes). */
4862 /* font weight (bold/dim) */
4863 val
= attrs
[LFACE_WEIGHT_INDEX
];
4864 if (!UNSPECIFIEDP (val
)
4865 && (weight
= FONT_WEIGHT_NAME_NUMERIC (val
), weight
>= 0))
4867 int def_weight
= FONT_WEIGHT_NAME_NUMERIC (def_attrs
[LFACE_WEIGHT_INDEX
]);
4871 if (def_weight
> 100)
4872 return 0; /* same as default */
4873 test_caps
= TTY_CAP_BOLD
;
4875 else if (weight
< 100)
4877 if (def_weight
< 100)
4878 return 0; /* same as default */
4879 test_caps
= TTY_CAP_DIM
;
4881 else if (def_weight
== 100)
4882 return 0; /* same as default */
4886 val
= attrs
[LFACE_SLANT_INDEX
];
4887 if (!UNSPECIFIEDP (val
)
4888 && (slant
= FONT_SLANT_NAME_NUMERIC (val
), slant
>= 0))
4890 int def_slant
= FONT_SLANT_NAME_NUMERIC (def_attrs
[LFACE_SLANT_INDEX
]);
4891 if (slant
== 100 || slant
== def_slant
)
4892 return 0; /* same as default */
4894 test_caps
|= TTY_CAP_ITALIC
;
4898 val
= attrs
[LFACE_UNDERLINE_INDEX
];
4899 if (!UNSPECIFIEDP (val
))
4902 return 0; /* ttys can't use colored underlines */
4903 else if (EQ (CAR_SAFE (val
), QCstyle
) && EQ (CAR_SAFE (CDR_SAFE (val
)), Qwave
))
4904 return 0; /* ttys can't use wave underlines */
4905 else if (face_attr_equal_p (val
, def_attrs
[LFACE_UNDERLINE_INDEX
]))
4906 return 0; /* same as default */
4908 test_caps
|= TTY_CAP_UNDERLINE
;
4912 val
= attrs
[LFACE_INVERSE_INDEX
];
4913 if (!UNSPECIFIEDP (val
))
4915 if (face_attr_equal_p (val
, def_attrs
[LFACE_INVERSE_INDEX
]))
4916 return 0; /* same as default */
4918 test_caps
|= TTY_CAP_INVERSE
;
4922 /* Color testing. */
4924 /* Check if foreground color is close enough. */
4925 fg
= attrs
[LFACE_FOREGROUND_INDEX
];
4928 Lisp_Object def_fg
= def_attrs
[LFACE_FOREGROUND_INDEX
];
4930 if (face_attr_equal_p (fg
, def_fg
))
4931 return 0; /* same as default */
4932 else if (! tty_lookup_color (f
, fg
, &fg_tty_color
, &fg_std_color
))
4933 return 0; /* not a valid color */
4934 else if (color_distance (&fg_tty_color
, &fg_std_color
)
4935 > TTY_SAME_COLOR_THRESHOLD
)
4936 return 0; /* displayed color is too different */
4938 /* Make sure the color is really different than the default. */
4940 XColor def_fg_color
;
4941 if (tty_lookup_color (f
, def_fg
, &def_fg_color
, 0)
4942 && (color_distance (&fg_tty_color
, &def_fg_color
)
4943 <= TTY_SAME_COLOR_THRESHOLD
))
4948 /* Check if background color is close enough. */
4949 bg
= attrs
[LFACE_BACKGROUND_INDEX
];
4952 Lisp_Object def_bg
= def_attrs
[LFACE_BACKGROUND_INDEX
];
4954 if (face_attr_equal_p (bg
, def_bg
))
4955 return 0; /* same as default */
4956 else if (! tty_lookup_color (f
, bg
, &bg_tty_color
, &bg_std_color
))
4957 return 0; /* not a valid color */
4958 else if (color_distance (&bg_tty_color
, &bg_std_color
)
4959 > TTY_SAME_COLOR_THRESHOLD
)
4960 return 0; /* displayed color is too different */
4962 /* Make sure the color is really different than the default. */
4964 XColor def_bg_color
;
4965 if (tty_lookup_color (f
, def_bg
, &def_bg_color
, 0)
4966 && (color_distance (&bg_tty_color
, &def_bg_color
)
4967 <= TTY_SAME_COLOR_THRESHOLD
))
4972 /* If both foreground and background are requested, see if the
4973 distance between them is OK. We just check to see if the distance
4974 between the tty's foreground and background is close enough to the
4975 distance between the standard foreground and background. */
4976 if (STRINGP (fg
) && STRINGP (bg
))
4979 = (color_distance (&fg_std_color
, &bg_std_color
)
4980 - color_distance (&fg_tty_color
, &bg_tty_color
));
4981 if (delta_delta
> TTY_SAME_COLOR_THRESHOLD
4982 || delta_delta
< -TTY_SAME_COLOR_THRESHOLD
)
4987 /* See if the capabilities we selected above are supported, with the
4989 return tty_capable_p (FRAME_TTY (f
), test_caps
);
4993 DEFUN ("display-supports-face-attributes-p",
4994 Fdisplay_supports_face_attributes_p
, Sdisplay_supports_face_attributes_p
,
4996 doc
: /* Return non-nil if all the face attributes in ATTRIBUTES are supported.
4997 The optional argument DISPLAY can be a display name, a frame, or
4998 nil (meaning the selected frame's display).
5000 The definition of `supported' is somewhat heuristic, but basically means
5001 that a face containing all the attributes in ATTRIBUTES, when merged
5002 with the default face for display, can be represented in a way that's
5004 \(1) different in appearance than the default face, and
5005 \(2) `close in spirit' to what the attributes specify, if not exact.
5007 Point (2) implies that a `:weight black' attribute will be satisfied by
5008 any display that can display bold, and a `:foreground \"yellow\"' as long
5009 as it can display a yellowish color, but `:slant italic' will _not_ be
5010 satisfied by the tty display code's automatic substitution of a `dim'
5011 face for italic. */)
5012 (Lisp_Object attributes
, Lisp_Object display
)
5018 struct face
*def_face
;
5019 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
5021 if (noninteractive
|| !initialized
)
5022 /* We may not be able to access low-level face information in batch
5023 mode, or before being dumped, and this function is not going to
5024 be very useful in those cases anyway, so just give up. */
5028 frame
= selected_frame
;
5029 else if (FRAMEP (display
))
5033 /* Find any frame on DISPLAY. */
5037 FOR_EACH_FRAME (tail
, frame
)
5038 if (!NILP (Fequal (Fcdr (Fassq (Qdisplay
,
5039 XFRAME (frame
)->param_alist
)),
5044 CHECK_LIVE_FRAME (frame
);
5047 for (i
= 0; i
< LFACE_VECTOR_SIZE
; i
++)
5048 attrs
[i
] = Qunspecified
;
5049 merge_face_ref (f
, attributes
, attrs
, 1, 0);
5051 def_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
5052 if (def_face
== NULL
)
5054 if (! realize_basic_faces (f
))
5055 error ("Cannot realize default face");
5056 def_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
5057 if (def_face
== NULL
)
5058 emacs_abort (); /* realize_basic_faces must have set it up */
5061 /* Dispatch to the appropriate handler. */
5062 if (FRAME_TERMCAP_P (f
) || FRAME_MSDOS_P (f
))
5063 supports
= tty_supports_face_attributes_p (f
, attrs
, def_face
);
5064 #ifdef HAVE_WINDOW_SYSTEM
5066 supports
= x_supports_face_attributes_p (f
, attrs
, def_face
);
5069 return supports
? Qt
: Qnil
;
5073 /***********************************************************************
5075 ***********************************************************************/
5077 DEFUN ("internal-set-font-selection-order",
5078 Finternal_set_font_selection_order
,
5079 Sinternal_set_font_selection_order
, 1, 1, 0,
5080 doc
: /* Set font selection order for face font selection to ORDER.
5081 ORDER must be a list of length 4 containing the symbols `:width',
5082 `:height', `:weight', and `:slant'. Face attributes appearing
5083 first in ORDER are matched first, e.g. if `:height' appears before
5084 `:weight' in ORDER, font selection first tries to find a font with
5085 a suitable height, and then tries to match the font weight.
5091 int indices
[DIM (font_sort_order
)];
5094 memset (indices
, 0, sizeof indices
);
5098 CONSP (list
) && i
< DIM (indices
);
5099 list
= XCDR (list
), ++i
)
5101 Lisp_Object attr
= XCAR (list
);
5104 if (EQ (attr
, QCwidth
))
5106 else if (EQ (attr
, QCheight
))
5107 xlfd
= XLFD_POINT_SIZE
;
5108 else if (EQ (attr
, QCweight
))
5110 else if (EQ (attr
, QCslant
))
5115 if (indices
[i
] != 0)
5120 if (!NILP (list
) || i
!= DIM (indices
))
5121 signal_error ("Invalid font sort order", order
);
5122 for (i
= 0; i
< DIM (font_sort_order
); ++i
)
5123 if (indices
[i
] == 0)
5124 signal_error ("Invalid font sort order", order
);
5126 if (memcmp (indices
, font_sort_order
, sizeof indices
) != 0)
5128 memcpy (font_sort_order
, indices
, sizeof font_sort_order
);
5129 free_all_realized_faces (Qnil
);
5132 font_update_sort_order (font_sort_order
);
5138 DEFUN ("internal-set-alternative-font-family-alist",
5139 Finternal_set_alternative_font_family_alist
,
5140 Sinternal_set_alternative_font_family_alist
, 1, 1, 0,
5141 doc
: /* Define alternative font families to try in face font selection.
5142 ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5143 Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can
5144 be found. Value is ALIST. */)
5147 Lisp_Object entry
, tail
, tail2
;
5150 alist
= Fcopy_sequence (alist
);
5151 for (tail
= alist
; CONSP (tail
); tail
= XCDR (tail
))
5153 entry
= XCAR (tail
);
5155 entry
= Fcopy_sequence (entry
);
5156 XSETCAR (tail
, entry
);
5157 for (tail2
= entry
; CONSP (tail2
); tail2
= XCDR (tail2
))
5158 XSETCAR (tail2
, Fintern (XCAR (tail2
), Qnil
));
5161 Vface_alternative_font_family_alist
= alist
;
5162 free_all_realized_faces (Qnil
);
5167 DEFUN ("internal-set-alternative-font-registry-alist",
5168 Finternal_set_alternative_font_registry_alist
,
5169 Sinternal_set_alternative_font_registry_alist
, 1, 1, 0,
5170 doc
: /* Define alternative font registries to try in face font selection.
5171 ALIST is an alist of (REGISTRY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5172 Each ALTERNATIVE is tried in order if no fonts of font registry REGISTRY can
5173 be found. Value is ALIST. */)
5176 Lisp_Object entry
, tail
, tail2
;
5179 alist
= Fcopy_sequence (alist
);
5180 for (tail
= alist
; CONSP (tail
); tail
= XCDR (tail
))
5182 entry
= XCAR (tail
);
5184 entry
= Fcopy_sequence (entry
);
5185 XSETCAR (tail
, entry
);
5186 for (tail2
= entry
; CONSP (tail2
); tail2
= XCDR (tail2
))
5187 XSETCAR (tail2
, Fdowncase (XCAR (tail2
)));
5189 Vface_alternative_font_registry_alist
= alist
;
5190 free_all_realized_faces (Qnil
);
5195 #ifdef HAVE_WINDOW_SYSTEM
5197 /* Return the fontset id of the base fontset name or alias name given
5198 by the fontset attribute of ATTRS. Value is -1 if the fontset
5199 attribute of ATTRS doesn't name a fontset. */
5202 face_fontset (Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
5206 name
= attrs
[LFACE_FONTSET_INDEX
];
5207 if (!STRINGP (name
))
5209 return fs_query_fontset (name
, 0);
5212 #endif /* HAVE_WINDOW_SYSTEM */
5216 /***********************************************************************
5218 ***********************************************************************/
5220 /* Realize basic faces on frame F. Value is zero if frame parameters
5221 of F don't contain enough information needed to realize the default
5225 realize_basic_faces (struct frame
*f
)
5228 ptrdiff_t count
= SPECPDL_INDEX ();
5230 /* Block input here so that we won't be surprised by an X expose
5231 event, for instance, without having the faces set up. */
5233 specbind (Qscalable_fonts_allowed
, Qt
);
5235 if (realize_default_face (f
))
5237 realize_named_face (f
, Qmode_line
, MODE_LINE_FACE_ID
);
5238 realize_named_face (f
, Qmode_line_inactive
, MODE_LINE_INACTIVE_FACE_ID
);
5239 realize_named_face (f
, Qtool_bar
, TOOL_BAR_FACE_ID
);
5240 realize_named_face (f
, Qfringe
, FRINGE_FACE_ID
);
5241 realize_named_face (f
, Qheader_line
, HEADER_LINE_FACE_ID
);
5242 realize_named_face (f
, Qscroll_bar
, SCROLL_BAR_FACE_ID
);
5243 realize_named_face (f
, Qborder
, BORDER_FACE_ID
);
5244 realize_named_face (f
, Qcursor
, CURSOR_FACE_ID
);
5245 realize_named_face (f
, Qmouse
, MOUSE_FACE_ID
);
5246 realize_named_face (f
, Qmenu
, MENU_FACE_ID
);
5247 realize_named_face (f
, Qvertical_border
, VERTICAL_BORDER_FACE_ID
);
5249 /* Reflect changes in the `menu' face in menu bars. */
5250 if (FRAME_FACE_CACHE (f
)->menu_face_changed_p
)
5252 FRAME_FACE_CACHE (f
)->menu_face_changed_p
= 0;
5253 #ifdef USE_X_TOOLKIT
5254 if (FRAME_WINDOW_P (f
))
5255 x_update_menu_appearance (f
);
5262 unbind_to (count
, Qnil
);
5268 /* Realize the default face on frame F. If the face is not fully
5269 specified, make it fully-specified. Attributes of the default face
5270 that are not explicitly specified are taken from frame parameters. */
5273 realize_default_face (struct frame
*f
)
5275 struct face_cache
*c
= FRAME_FACE_CACHE (f
);
5277 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
5280 /* If the `default' face is not yet known, create it. */
5281 lface
= lface_from_face_name (f
, Qdefault
, 0);
5285 XSETFRAME (frame
, f
);
5286 lface
= Finternal_make_lisp_face (Qdefault
, frame
);
5289 #ifdef HAVE_WINDOW_SYSTEM
5290 if (FRAME_WINDOW_P (f
))
5292 Lisp_Object font_object
;
5294 XSETFONT (font_object
, FRAME_FONT (f
));
5295 set_lface_from_font (f
, lface
, font_object
, f
->default_face_done_p
);
5296 ASET (lface
, LFACE_FONTSET_INDEX
, fontset_name (FRAME_FONTSET (f
)));
5297 f
->default_face_done_p
= 1;
5299 #endif /* HAVE_WINDOW_SYSTEM */
5301 if (!FRAME_WINDOW_P (f
))
5303 ASET (lface
, LFACE_FAMILY_INDEX
, build_string ("default"));
5304 ASET (lface
, LFACE_FOUNDRY_INDEX
, LFACE_FAMILY (lface
));
5305 ASET (lface
, LFACE_SWIDTH_INDEX
, Qnormal
);
5306 ASET (lface
, LFACE_HEIGHT_INDEX
, make_number (1));
5307 if (UNSPECIFIEDP (LFACE_WEIGHT (lface
)))
5308 ASET (lface
, LFACE_WEIGHT_INDEX
, Qnormal
);
5309 if (UNSPECIFIEDP (LFACE_SLANT (lface
)))
5310 ASET (lface
, LFACE_SLANT_INDEX
, Qnormal
);
5311 if (UNSPECIFIEDP (LFACE_FONTSET (lface
)))
5312 ASET (lface
, LFACE_FONTSET_INDEX
, Qnil
);
5315 if (UNSPECIFIEDP (LFACE_UNDERLINE (lface
)))
5316 ASET (lface
, LFACE_UNDERLINE_INDEX
, Qnil
);
5318 if (UNSPECIFIEDP (LFACE_OVERLINE (lface
)))
5319 ASET (lface
, LFACE_OVERLINE_INDEX
, Qnil
);
5321 if (UNSPECIFIEDP (LFACE_STRIKE_THROUGH (lface
)))
5322 ASET (lface
, LFACE_STRIKE_THROUGH_INDEX
, Qnil
);
5324 if (UNSPECIFIEDP (LFACE_BOX (lface
)))
5325 ASET (lface
, LFACE_BOX_INDEX
, Qnil
);
5327 if (UNSPECIFIEDP (LFACE_INVERSE (lface
)))
5328 ASET (lface
, LFACE_INVERSE_INDEX
, Qnil
);
5330 if (UNSPECIFIEDP (LFACE_FOREGROUND (lface
)))
5332 /* This function is called so early that colors are not yet
5333 set in the frame parameter list. */
5334 Lisp_Object color
= Fassq (Qforeground_color
, f
->param_alist
);
5336 if (CONSP (color
) && STRINGP (XCDR (color
)))
5337 ASET (lface
, LFACE_FOREGROUND_INDEX
, XCDR (color
));
5338 else if (FRAME_WINDOW_P (f
))
5340 else if (FRAME_INITIAL_P (f
) || FRAME_TERMCAP_P (f
) || FRAME_MSDOS_P (f
))
5341 ASET (lface
, LFACE_FOREGROUND_INDEX
, build_string (unspecified_fg
));
5346 if (UNSPECIFIEDP (LFACE_DISTANT_FOREGROUND (lface
)))
5347 ASET (lface
, LFACE_DISTANT_FOREGROUND_INDEX
, build_string (unspecified_fg
));
5349 if (UNSPECIFIEDP (LFACE_BACKGROUND (lface
)))
5351 /* This function is called so early that colors are not yet
5352 set in the frame parameter list. */
5353 Lisp_Object color
= Fassq (Qbackground_color
, f
->param_alist
);
5354 if (CONSP (color
) && STRINGP (XCDR (color
)))
5355 ASET (lface
, LFACE_BACKGROUND_INDEX
, XCDR (color
));
5356 else if (FRAME_WINDOW_P (f
))
5358 else if (FRAME_INITIAL_P (f
) || FRAME_TERMCAP_P (f
) || FRAME_MSDOS_P (f
))
5359 ASET (lface
, LFACE_BACKGROUND_INDEX
, build_string (unspecified_bg
));
5364 if (UNSPECIFIEDP (LFACE_STIPPLE (lface
)))
5365 ASET (lface
, LFACE_STIPPLE_INDEX
, Qnil
);
5367 /* Realize the face; it must be fully-specified now. */
5368 eassert (lface_fully_specified_p (XVECTOR (lface
)->contents
));
5369 check_lface (lface
);
5370 memcpy (attrs
, XVECTOR (lface
)->contents
, sizeof attrs
);
5371 face
= realize_face (c
, attrs
, DEFAULT_FACE_ID
);
5373 #ifdef HAVE_WINDOW_SYSTEM
5374 #ifdef HAVE_X_WINDOWS
5375 if (FRAME_X_P (f
) && face
->font
!= FRAME_FONT (f
))
5377 /* This can happen when making a frame on a display that does
5378 not support the default font. */
5382 /* Otherwise, the font specified for the frame was not
5383 acceptable as a font for the default face (perhaps because
5384 auto-scaled fonts are rejected), so we must adjust the frame
5386 x_set_font (f
, LFACE_FONT (lface
), Qnil
);
5388 #endif /* HAVE_X_WINDOWS */
5389 #endif /* HAVE_WINDOW_SYSTEM */
5394 /* Realize basic faces other than the default face in face cache C.
5395 SYMBOL is the face name, ID is the face id the realized face must
5396 have. The default face must have been realized already. */
5399 realize_named_face (struct frame
*f
, Lisp_Object symbol
, int id
)
5401 struct face_cache
*c
= FRAME_FACE_CACHE (f
);
5402 Lisp_Object lface
= lface_from_face_name (f
, symbol
, 0);
5403 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
5404 Lisp_Object symbol_attrs
[LFACE_VECTOR_SIZE
];
5406 /* The default face must exist and be fully specified. */
5407 get_lface_attributes_no_remap (f
, Qdefault
, attrs
, 1);
5408 check_lface_attrs (attrs
);
5409 eassert (lface_fully_specified_p (attrs
));
5411 /* If SYMBOL isn't know as a face, create it. */
5415 XSETFRAME (frame
, f
);
5416 lface
= Finternal_make_lisp_face (symbol
, frame
);
5419 /* Merge SYMBOL's face with the default face. */
5420 get_lface_attributes_no_remap (f
, symbol
, symbol_attrs
, 1);
5421 merge_face_vectors (f
, symbol_attrs
, attrs
, 0);
5423 /* Realize the face. */
5424 realize_face (c
, attrs
, id
);
5428 /* Realize the fully-specified face with attributes ATTRS in face
5429 cache CACHE for ASCII characters. If FORMER_FACE_ID is
5430 non-negative, it is an ID of face to remove before caching the new
5431 face. Value is a pointer to the newly created realized face. */
5433 static struct face
*
5434 realize_face (struct face_cache
*cache
, Lisp_Object attrs
[LFACE_VECTOR_SIZE
],
5439 /* LFACE must be fully specified. */
5440 eassert (cache
!= NULL
);
5441 check_lface_attrs (attrs
);
5443 if (former_face_id
>= 0 && cache
->used
> former_face_id
)
5445 /* Remove the former face. */
5446 struct face
*former_face
= cache
->faces_by_id
[former_face_id
];
5447 uncache_face (cache
, former_face
);
5448 free_realized_face (cache
->f
, former_face
);
5449 SET_FRAME_GARBAGED (cache
->f
);
5452 if (FRAME_WINDOW_P (cache
->f
))
5453 face
= realize_x_face (cache
, attrs
);
5454 else if (FRAME_TERMCAP_P (cache
->f
) || FRAME_MSDOS_P (cache
->f
))
5455 face
= realize_tty_face (cache
, attrs
);
5456 else if (FRAME_INITIAL_P (cache
->f
))
5458 /* Create a dummy face. */
5459 face
= make_realized_face (attrs
);
5464 /* Insert the new face. */
5465 cache_face (cache
, face
, lface_hash (attrs
));
5470 #ifdef HAVE_WINDOW_SYSTEM
5471 /* Realize the fully-specified face that uses FONT-OBJECT and has the
5472 same attributes as BASE_FACE except for the font on frame F.
5473 FONT-OBJECT may be nil, in which case, realized a face of
5476 static struct face
*
5477 realize_non_ascii_face (struct frame
*f
, Lisp_Object font_object
,
5478 struct face
*base_face
)
5480 struct face_cache
*cache
= FRAME_FACE_CACHE (f
);
5483 face
= xmalloc (sizeof *face
);
5488 = (! NILP (font_object
)
5489 && FONT_WEIGHT_NAME_NUMERIC (face
->lface
[LFACE_WEIGHT_INDEX
]) > 100
5490 && FONT_WEIGHT_NUMERIC (font_object
) <= 100);
5492 /* Don't try to free the colors copied bitwise from BASE_FACE. */
5493 face
->colors_copied_bitwise_p
= 1;
5494 face
->font
= NILP (font_object
) ? NULL
: XFONT_OBJECT (font_object
);
5497 cache_face (cache
, face
, face
->hash
);
5501 #endif /* HAVE_WINDOW_SYSTEM */
5504 /* Realize the fully-specified face with attributes ATTRS in face
5505 cache CACHE for ASCII characters. Do it for X frame CACHE->f. If
5506 the new face doesn't share font with the default face, a fontname
5507 is allocated from the heap and set in `font_name' of the new face,
5508 but it is not yet loaded here. Value is a pointer to the newly
5509 created realized face. */
5511 static struct face
*
5512 realize_x_face (struct face_cache
*cache
, Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
5514 struct face
*face
= NULL
;
5515 #ifdef HAVE_WINDOW_SYSTEM
5516 struct face
*default_face
;
5518 Lisp_Object stipple
, underline
, overline
, strike_through
, box
;
5520 eassert (FRAME_WINDOW_P (cache
->f
));
5522 /* Allocate a new realized face. */
5523 face
= make_realized_face (attrs
);
5524 face
->ascii_face
= face
;
5528 /* Determine the font to use. Most of the time, the font will be
5529 the same as the font of the default face, so try that first. */
5530 default_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
5532 && lface_same_font_attributes_p (default_face
->lface
, attrs
))
5534 face
->font
= default_face
->font
;
5536 = make_fontset_for_ascii_face (f
, default_face
->fontset
, face
);
5540 /* If the face attribute ATTRS specifies a fontset, use it as
5541 the base of a new realized fontset. Otherwise, use the same
5542 base fontset as of the default face. The base determines
5543 registry and encoding of a font. It may also determine
5544 foundry and family. The other fields of font name pattern
5545 are constructed from ATTRS. */
5546 int fontset
= face_fontset (attrs
);
5548 /* If we are realizing the default face, ATTRS should specify a
5549 fontset. In other words, if FONTSET is -1, we are not
5550 realizing the default face, thus the default face should have
5551 already been realized. */
5555 fontset
= default_face
->fontset
;
5559 if (! FONT_OBJECT_P (attrs
[LFACE_FONT_INDEX
]))
5560 attrs
[LFACE_FONT_INDEX
]
5561 = font_load_for_lface (f
, attrs
, attrs
[LFACE_FONT_INDEX
]);
5562 if (FONT_OBJECT_P (attrs
[LFACE_FONT_INDEX
]))
5564 face
->font
= XFONT_OBJECT (attrs
[LFACE_FONT_INDEX
]);
5565 face
->fontset
= make_fontset_for_ascii_face (f
, fontset
, face
);
5575 && FONT_WEIGHT_NAME_NUMERIC (attrs
[LFACE_WEIGHT_INDEX
]) > 100
5576 && FONT_WEIGHT_NUMERIC (attrs
[LFACE_FONT_INDEX
]) <= 100)
5577 face
->overstrike
= 1;
5579 /* Load colors, and set remaining attributes. */
5581 load_face_colors (f
, face
, attrs
);
5584 box
= attrs
[LFACE_BOX_INDEX
];
5587 /* A simple box of line width 1 drawn in color given by
5589 face
->box_color
= load_color (f
, face
, attrs
[LFACE_BOX_INDEX
],
5591 face
->box
= FACE_SIMPLE_BOX
;
5592 face
->box_line_width
= 1;
5594 else if (INTEGERP (box
))
5596 /* Simple box of specified line width in foreground color of the
5598 eassert (XINT (box
) != 0);
5599 face
->box
= FACE_SIMPLE_BOX
;
5600 face
->box_line_width
= XINT (box
);
5601 face
->box_color
= face
->foreground
;
5602 face
->box_color_defaulted_p
= 1;
5604 else if (CONSP (box
))
5606 /* `(:width WIDTH :color COLOR :shadow SHADOW)'. SHADOW
5607 being one of `raised' or `sunken'. */
5608 face
->box
= FACE_SIMPLE_BOX
;
5609 face
->box_color
= face
->foreground
;
5610 face
->box_color_defaulted_p
= 1;
5611 face
->box_line_width
= 1;
5615 Lisp_Object keyword
, value
;
5617 keyword
= XCAR (box
);
5625 if (EQ (keyword
, QCline_width
))
5627 if (INTEGERP (value
) && XINT (value
) != 0)
5628 face
->box_line_width
= XINT (value
);
5630 else if (EQ (keyword
, QCcolor
))
5632 if (STRINGP (value
))
5634 face
->box_color
= load_color (f
, face
, value
,
5636 face
->use_box_color_for_shadows_p
= 1;
5639 else if (EQ (keyword
, QCstyle
))
5641 if (EQ (value
, Qreleased_button
))
5642 face
->box
= FACE_RAISED_BOX
;
5643 else if (EQ (value
, Qpressed_button
))
5644 face
->box
= FACE_SUNKEN_BOX
;
5649 /* Text underline, overline, strike-through. */
5651 underline
= attrs
[LFACE_UNDERLINE_INDEX
];
5652 if (EQ (underline
, Qt
))
5654 /* Use default color (same as foreground color). */
5655 face
->underline_p
= 1;
5656 face
->underline_type
= FACE_UNDER_LINE
;
5657 face
->underline_defaulted_p
= 1;
5658 face
->underline_color
= 0;
5660 else if (STRINGP (underline
))
5662 /* Use specified color. */
5663 face
->underline_p
= 1;
5664 face
->underline_type
= FACE_UNDER_LINE
;
5665 face
->underline_defaulted_p
= 0;
5666 face
->underline_color
5667 = load_color (f
, face
, underline
,
5668 LFACE_UNDERLINE_INDEX
);
5670 else if (NILP (underline
))
5672 face
->underline_p
= 0;
5673 face
->underline_defaulted_p
= 0;
5674 face
->underline_color
= 0;
5676 else if (CONSP (underline
))
5678 /* `(:color COLOR :style STYLE)'.
5679 STYLE being one of `line' or `wave'. */
5680 face
->underline_p
= 1;
5681 face
->underline_color
= 0;
5682 face
->underline_defaulted_p
= 1;
5683 face
->underline_type
= FACE_UNDER_LINE
;
5685 /* FIXME? This is also not robust about checking the precise form.
5686 See comments in Finternal_set_lisp_face_attribute. */
5687 while (CONSP (underline
))
5689 Lisp_Object keyword
, value
;
5691 keyword
= XCAR (underline
);
5692 underline
= XCDR (underline
);
5694 if (!CONSP (underline
))
5696 value
= XCAR (underline
);
5697 underline
= XCDR (underline
);
5699 if (EQ (keyword
, QCcolor
))
5701 if (EQ (value
, Qforeground_color
))
5703 face
->underline_defaulted_p
= 1;
5704 face
->underline_color
= 0;
5706 else if (STRINGP (value
))
5708 face
->underline_defaulted_p
= 0;
5709 face
->underline_color
= load_color (f
, face
, value
,
5710 LFACE_UNDERLINE_INDEX
);
5713 else if (EQ (keyword
, QCstyle
))
5715 if (EQ (value
, Qline
))
5716 face
->underline_type
= FACE_UNDER_LINE
;
5717 else if (EQ (value
, Qwave
))
5718 face
->underline_type
= FACE_UNDER_WAVE
;
5723 overline
= attrs
[LFACE_OVERLINE_INDEX
];
5724 if (STRINGP (overline
))
5726 face
->overline_color
5727 = load_color (f
, face
, attrs
[LFACE_OVERLINE_INDEX
],
5728 LFACE_OVERLINE_INDEX
);
5729 face
->overline_p
= 1;
5731 else if (EQ (overline
, Qt
))
5733 face
->overline_color
= face
->foreground
;
5734 face
->overline_color_defaulted_p
= 1;
5735 face
->overline_p
= 1;
5738 strike_through
= attrs
[LFACE_STRIKE_THROUGH_INDEX
];
5739 if (STRINGP (strike_through
))
5741 face
->strike_through_color
5742 = load_color (f
, face
, attrs
[LFACE_STRIKE_THROUGH_INDEX
],
5743 LFACE_STRIKE_THROUGH_INDEX
);
5744 face
->strike_through_p
= 1;
5746 else if (EQ (strike_through
, Qt
))
5748 face
->strike_through_color
= face
->foreground
;
5749 face
->strike_through_color_defaulted_p
= 1;
5750 face
->strike_through_p
= 1;
5753 stipple
= attrs
[LFACE_STIPPLE_INDEX
];
5754 if (!NILP (stipple
))
5755 face
->stipple
= load_pixmap (f
, stipple
);
5756 #endif /* HAVE_WINDOW_SYSTEM */
5762 /* Map a specified color of face FACE on frame F to a tty color index.
5763 IDX is either LFACE_FOREGROUND_INDEX or LFACE_BACKGROUND_INDEX, and
5764 specifies which color to map. Set *DEFAULTED to 1 if mapping to the
5765 default foreground/background colors. */
5768 map_tty_color (struct frame
*f
, struct face
*face
,
5769 enum lface_attribute_index idx
, int *defaulted
)
5771 Lisp_Object frame
, color
, def
;
5772 int foreground_p
= idx
== LFACE_FOREGROUND_INDEX
;
5773 unsigned long default_pixel
=
5774 foreground_p
? FACE_TTY_DEFAULT_FG_COLOR
: FACE_TTY_DEFAULT_BG_COLOR
;
5775 unsigned long pixel
= default_pixel
;
5777 unsigned long default_other_pixel
=
5778 foreground_p
? FACE_TTY_DEFAULT_BG_COLOR
: FACE_TTY_DEFAULT_FG_COLOR
;
5781 eassert (idx
== LFACE_FOREGROUND_INDEX
|| idx
== LFACE_BACKGROUND_INDEX
);
5783 XSETFRAME (frame
, f
);
5784 color
= face
->lface
[idx
];
5788 && CONSP (Vtty_defined_color_alist
)
5789 && (def
= assq_no_quit (color
, call1 (Qtty_color_alist
, frame
)),
5792 /* Associations in tty-defined-color-alist are of the form
5793 (NAME INDEX R G B). We need the INDEX part. */
5794 pixel
= XINT (XCAR (XCDR (def
)));
5797 if (pixel
== default_pixel
&& STRINGP (color
))
5799 pixel
= load_color (f
, face
, color
, idx
);
5802 /* If the foreground of the default face is the default color,
5803 use the foreground color defined by the frame. */
5804 if (FRAME_MSDOS_P (f
))
5806 if (pixel
== default_pixel
5807 || pixel
== FACE_TTY_DEFAULT_COLOR
)
5810 pixel
= FRAME_FOREGROUND_PIXEL (f
);
5812 pixel
= FRAME_BACKGROUND_PIXEL (f
);
5813 face
->lface
[idx
] = tty_color_name (f
, pixel
);
5816 else if (pixel
== default_other_pixel
)
5819 pixel
= FRAME_BACKGROUND_PIXEL (f
);
5821 pixel
= FRAME_FOREGROUND_PIXEL (f
);
5822 face
->lface
[idx
] = tty_color_name (f
, pixel
);
5830 face
->foreground
= pixel
;
5832 face
->background
= pixel
;
5836 /* Realize the fully-specified face with attributes ATTRS in face
5837 cache CACHE for ASCII characters. Do it for TTY frame CACHE->f.
5838 Value is a pointer to the newly created realized face. */
5840 static struct face
*
5841 realize_tty_face (struct face_cache
*cache
,
5842 Lisp_Object attrs
[LFACE_VECTOR_SIZE
])
5846 int face_colors_defaulted
= 0;
5847 struct frame
*f
= cache
->f
;
5849 /* Frame must be a termcap frame. */
5850 eassert (FRAME_TERMCAP_P (cache
->f
) || FRAME_MSDOS_P (cache
->f
));
5852 /* Allocate a new realized face. */
5853 face
= make_realized_face (attrs
);
5855 face
->font_name
= FRAME_MSDOS_P (cache
->f
) ? "ms-dos" : "tty";
5858 /* Map face attributes to TTY appearances. */
5859 weight
= FONT_WEIGHT_NAME_NUMERIC (attrs
[LFACE_WEIGHT_INDEX
]);
5860 slant
= FONT_SLANT_NAME_NUMERIC (attrs
[LFACE_SLANT_INDEX
]);
5862 face
->tty_bold_p
= 1;
5864 face
->tty_italic_p
= 1;
5865 if (!NILP (attrs
[LFACE_UNDERLINE_INDEX
]))
5866 face
->tty_underline_p
= 1;
5867 if (!NILP (attrs
[LFACE_INVERSE_INDEX
]))
5868 face
->tty_reverse_p
= 1;
5870 /* Map color names to color indices. */
5871 map_tty_color (f
, face
, LFACE_FOREGROUND_INDEX
, &face_colors_defaulted
);
5872 map_tty_color (f
, face
, LFACE_BACKGROUND_INDEX
, &face_colors_defaulted
);
5874 /* Swap colors if face is inverse-video. If the colors are taken
5875 from the frame colors, they are already inverted, since the
5876 frame-creation function calls x-handle-reverse-video. */
5877 if (face
->tty_reverse_p
&& !face_colors_defaulted
)
5879 unsigned long tem
= face
->foreground
;
5880 face
->foreground
= face
->background
;
5881 face
->background
= tem
;
5884 if (tty_suppress_bold_inverse_default_colors_p
5886 && face
->background
== FACE_TTY_DEFAULT_FG_COLOR
5887 && face
->foreground
== FACE_TTY_DEFAULT_BG_COLOR
)
5888 face
->tty_bold_p
= 0;
5894 DEFUN ("tty-suppress-bold-inverse-default-colors",
5895 Ftty_suppress_bold_inverse_default_colors
,
5896 Stty_suppress_bold_inverse_default_colors
, 1, 1, 0,
5897 doc
: /* Suppress/allow boldness of faces with inverse default colors.
5898 SUPPRESS non-nil means suppress it.
5899 This affects bold faces on TTYs whose foreground is the default background
5900 color of the display and whose background is the default foreground color.
5901 For such faces, the bold face attribute is ignored if this variable
5903 (Lisp_Object suppress
)
5905 tty_suppress_bold_inverse_default_colors_p
= !NILP (suppress
);
5906 ++face_change_count
;
5912 /***********************************************************************
5914 ***********************************************************************/
5916 /* Return the ID of the face to use to display character CH with face
5917 property PROP on frame F in current_buffer. */
5920 compute_char_face (struct frame
*f
, int ch
, Lisp_Object prop
)
5924 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
5929 struct face
*face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
5930 face_id
= FACE_FOR_CHAR (f
, face
, ch
, -1, Qnil
);
5934 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
5935 struct face
*default_face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
5936 memcpy (attrs
, default_face
->lface
, sizeof attrs
);
5937 merge_face_ref (f
, prop
, attrs
, 1, 0);
5938 face_id
= lookup_face (f
, attrs
);
5944 /* Return the face ID associated with buffer position POS for
5945 displaying ASCII characters. Return in *ENDPTR the position at
5946 which a different face is needed, as far as text properties and
5947 overlays are concerned. W is a window displaying current_buffer.
5949 REGION_BEG, REGION_END delimit the region, so it can be
5952 LIMIT is a position not to scan beyond. That is to limit the time
5953 this function can take.
5955 If MOUSE is non-zero, use the character's mouse-face, not its face.
5957 BASE_FACE_ID, if non-negative, specifies a base face id to use
5958 instead of DEFAULT_FACE_ID.
5960 The face returned is suitable for displaying ASCII characters. */
5963 face_at_buffer_position (struct window
*w
, ptrdiff_t pos
,
5964 ptrdiff_t *endptr
, ptrdiff_t limit
,
5965 int mouse
, int base_face_id
)
5967 struct frame
*f
= XFRAME (w
->frame
);
5968 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
5969 Lisp_Object prop
, position
;
5970 ptrdiff_t i
, noverlays
;
5971 Lisp_Object
*overlay_vec
;
5973 Lisp_Object propname
= mouse
? Qmouse_face
: Qface
;
5974 Lisp_Object limit1
, end
;
5975 struct face
*default_face
;
5977 /* W must display the current buffer. We could write this function
5978 to use the frame and buffer of W, but right now it doesn't. */
5979 /* eassert (XBUFFER (w->contents) == current_buffer); */
5981 XSETFASTINT (position
, pos
);
5985 /* Get the `face' or `mouse_face' text property at POS, and
5986 determine the next position at which the property changes. */
5987 prop
= Fget_text_property (position
, propname
, w
->contents
);
5988 XSETFASTINT (limit1
, (limit
< endpos
? limit
: endpos
));
5989 end
= Fnext_single_property_change (position
, propname
, w
->contents
, limit1
);
5991 endpos
= XINT (end
);
5993 /* Look at properties from overlays. */
5995 ptrdiff_t next_overlay
;
5997 GET_OVERLAYS_AT (pos
, overlay_vec
, noverlays
, &next_overlay
, 0);
5998 if (next_overlay
< endpos
)
5999 endpos
= next_overlay
;
6007 if (base_face_id
>= 0)
6008 face_id
= base_face_id
;
6009 else if (NILP (Vface_remapping_alist
))
6010 face_id
= DEFAULT_FACE_ID
;
6012 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
6014 default_face
= FACE_FROM_ID (f
, face_id
);
6017 /* Optimize common cases where we can use the default face. */
6020 return default_face
->id
;
6022 /* Begin with attributes from the default face. */
6023 memcpy (attrs
, default_face
->lface
, sizeof attrs
);
6025 /* Merge in attributes specified via text properties. */
6027 merge_face_ref (f
, prop
, attrs
, 1, 0);
6029 /* Now merge the overlay data. */
6030 noverlays
= sort_overlays (overlay_vec
, noverlays
, w
);
6031 for (i
= 0; i
< noverlays
; i
++)
6036 prop
= Foverlay_get (overlay_vec
[i
], propname
);
6038 merge_face_ref (f
, prop
, attrs
, 1, 0);
6040 oend
= OVERLAY_END (overlay_vec
[i
]);
6041 oendpos
= OVERLAY_POSITION (oend
);
6042 if (oendpos
< endpos
)
6048 /* Look up a realized face with the given face attributes,
6049 or realize a new one for ASCII characters. */
6050 return lookup_face (f
, attrs
);
6053 /* Return the face ID at buffer position POS for displaying ASCII
6054 characters associated with overlay strings for overlay OVERLAY.
6056 Like face_at_buffer_position except for OVERLAY. Currently it
6057 simply disregards the `face' properties of all overlays. */
6060 face_for_overlay_string (struct window
*w
, ptrdiff_t pos
,
6061 ptrdiff_t *endptr
, ptrdiff_t limit
,
6062 int mouse
, Lisp_Object overlay
)
6064 struct frame
*f
= XFRAME (w
->frame
);
6065 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
6066 Lisp_Object prop
, position
;
6068 Lisp_Object propname
= mouse
? Qmouse_face
: Qface
;
6069 Lisp_Object limit1
, end
;
6070 struct face
*default_face
;
6072 /* W must display the current buffer. We could write this function
6073 to use the frame and buffer of W, but right now it doesn't. */
6074 /* eassert (XBUFFER (w->contents) == current_buffer); */
6076 XSETFASTINT (position
, pos
);
6080 /* Get the `face' or `mouse_face' text property at POS, and
6081 determine the next position at which the property changes. */
6082 prop
= Fget_text_property (position
, propname
, w
->contents
);
6083 XSETFASTINT (limit1
, (limit
< endpos
? limit
: endpos
));
6084 end
= Fnext_single_property_change (position
, propname
, w
->contents
, limit1
);
6086 endpos
= XINT (end
);
6090 /* Optimize common case where we can use the default face. */
6092 && NILP (Vface_remapping_alist
))
6093 return DEFAULT_FACE_ID
;
6095 /* Begin with attributes from the default face. */
6096 default_face
= FACE_FROM_ID (f
, lookup_basic_face (f
, DEFAULT_FACE_ID
));
6097 memcpy (attrs
, default_face
->lface
, sizeof attrs
);
6099 /* Merge in attributes specified via text properties. */
6101 merge_face_ref (f
, prop
, attrs
, 1, 0);
6105 /* Look up a realized face with the given face attributes,
6106 or realize a new one for ASCII characters. */
6107 return lookup_face (f
, attrs
);
6111 /* Compute the face at character position POS in Lisp string STRING on
6112 window W, for ASCII characters.
6114 If STRING is an overlay string, it comes from position BUFPOS in
6115 current_buffer, otherwise BUFPOS is zero to indicate that STRING is
6116 not an overlay string. W must display the current buffer.
6117 REGION_BEG and REGION_END give the start and end positions of the
6118 region; both are -1 if no region is visible.
6120 BASE_FACE_ID is the id of a face to merge with. For strings coming
6121 from overlays or the `display' property it is the face at BUFPOS.
6123 If MOUSE_P is non-zero, use the character's mouse-face, not its face.
6125 Set *ENDPTR to the next position where to check for faces in
6126 STRING; -1 if the face is constant from POS to the end of the
6129 Value is the id of the face to use. The face returned is suitable
6130 for displaying ASCII characters. */
6133 face_at_string_position (struct window
*w
, Lisp_Object string
,
6134 ptrdiff_t pos
, ptrdiff_t bufpos
,
6135 ptrdiff_t *endptr
, enum face_id base_face_id
,
6138 Lisp_Object prop
, position
, end
, limit
;
6139 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
6140 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
6141 struct face
*base_face
;
6142 bool multibyte_p
= STRING_MULTIBYTE (string
);
6143 Lisp_Object prop_name
= mouse_p
? Qmouse_face
: Qface
;
6145 /* Get the value of the face property at the current position within
6146 STRING. Value is nil if there is no face property. */
6147 XSETFASTINT (position
, pos
);
6148 prop
= Fget_text_property (position
, prop_name
, string
);
6150 /* Get the next position at which to check for faces. Value of end
6151 is nil if face is constant all the way to the end of the string.
6152 Otherwise it is a string position where to check faces next.
6153 Limit is the maximum position up to which to check for property
6154 changes in Fnext_single_property_change. Strings are usually
6155 short, so set the limit to the end of the string. */
6156 XSETFASTINT (limit
, SCHARS (string
));
6157 end
= Fnext_single_property_change (position
, prop_name
, string
, limit
);
6159 *endptr
= XFASTINT (end
);
6163 base_face
= FACE_FROM_ID (f
, base_face_id
);
6164 eassert (base_face
);
6166 /* Optimize the default case that there is no face property. */
6169 /* We can't realize faces for different charsets differently
6170 if we don't have fonts, so we can stop here if not working
6171 on a window-system frame. */
6172 || !FRAME_WINDOW_P (f
)
6173 || FACE_SUITABLE_FOR_ASCII_CHAR_P (base_face
, 0)))
6174 return base_face
->id
;
6176 /* Begin with attributes from the base face. */
6177 memcpy (attrs
, base_face
->lface
, sizeof attrs
);
6179 /* Merge in attributes specified via text properties. */
6181 merge_face_ref (f
, prop
, attrs
, 1, 0);
6183 /* Look up a realized face with the given face attributes,
6184 or realize a new one for ASCII characters. */
6185 return lookup_face (f
, attrs
);
6189 /* Merge a face into a realized face.
6191 F is frame where faces are (to be) realized.
6193 FACE_NAME is named face to merge.
6195 If FACE_NAME is nil, FACE_ID is face_id of realized face to merge.
6197 If FACE_NAME is t, FACE_ID is lface_id of face to merge.
6199 BASE_FACE_ID is realized face to merge into.
6205 merge_faces (struct frame
*f
, Lisp_Object face_name
, int face_id
,
6208 Lisp_Object attrs
[LFACE_VECTOR_SIZE
];
6209 struct face
*base_face
;
6211 base_face
= FACE_FROM_ID (f
, base_face_id
);
6213 return base_face_id
;
6215 if (EQ (face_name
, Qt
))
6217 if (face_id
< 0 || face_id
>= lface_id_to_name_size
)
6218 return base_face_id
;
6219 face_name
= lface_id_to_name
[face_id
];
6220 /* When called during make-frame, lookup_derived_face may fail
6221 if the faces are uninitialized. Don't signal an error. */
6222 face_id
= lookup_derived_face (f
, face_name
, base_face_id
, 0);
6223 return (face_id
>= 0 ? face_id
: base_face_id
);
6226 /* Begin with attributes from the base face. */
6227 memcpy (attrs
, base_face
->lface
, sizeof attrs
);
6229 if (!NILP (face_name
))
6231 if (!merge_named_face (f
, face_name
, attrs
, 0))
6232 return base_face_id
;
6238 return base_face_id
;
6239 face
= FACE_FROM_ID (f
, face_id
);
6241 return base_face_id
;
6242 merge_face_vectors (f
, face
->lface
, attrs
, 0);
6245 /* Look up a realized face with the given face attributes,
6246 or realize a new one for ASCII characters. */
6247 return lookup_face (f
, attrs
);
6252 #ifndef HAVE_X_WINDOWS
6253 DEFUN ("x-load-color-file", Fx_load_color_file
,
6254 Sx_load_color_file
, 1, 1, 0,
6255 doc
: /* Create an alist of color entries from an external file.
6257 The file should define one named RGB color per line like so:
6259 where R,G,B are numbers between 0 and 255 and name is an arbitrary string. */)
6260 (Lisp_Object filename
)
6263 Lisp_Object cmap
= Qnil
;
6264 Lisp_Object abspath
;
6266 CHECK_STRING (filename
);
6267 abspath
= Fexpand_file_name (filename
, Qnil
);
6270 fp
= emacs_fopen (SSDATA (abspath
), "rt");
6274 int red
, green
, blue
;
6277 while (fgets (buf
, sizeof (buf
), fp
) != NULL
) {
6278 if (sscanf (buf
, "%u %u %u %n", &red
, &green
, &blue
, &num
) == 3)
6281 int color
= RGB (red
, green
, blue
);
6283 int color
= (red
<< 16) | (green
<< 8) | blue
;
6285 char *name
= buf
+ num
;
6286 ptrdiff_t len
= strlen (name
);
6287 len
-= 0 < len
&& name
[len
- 1] == '\n';
6288 cmap
= Fcons (Fcons (make_string (name
, len
), make_number (color
)),
6300 /***********************************************************************
6302 ***********************************************************************/
6306 /* Print the contents of the realized face FACE to stderr. */
6309 dump_realized_face (struct face
*face
)
6311 fprintf (stderr
, "ID: %d\n", face
->id
);
6312 #ifdef HAVE_X_WINDOWS
6313 fprintf (stderr
, "gc: %ld\n", (long) face
->gc
);
6315 fprintf (stderr
, "foreground: 0x%lx (%s)\n",
6317 SDATA (face
->lface
[LFACE_FOREGROUND_INDEX
]));
6318 fprintf (stderr
, "background: 0x%lx (%s)\n",
6320 SDATA (face
->lface
[LFACE_BACKGROUND_INDEX
]));
6322 fprintf (stderr
, "font_name: %s (%s)\n",
6323 SDATA (face
->font
->props
[FONT_NAME_INDEX
]),
6324 SDATA (face
->lface
[LFACE_FAMILY_INDEX
]));
6325 #ifdef HAVE_X_WINDOWS
6326 fprintf (stderr
, "font = %p\n", face
->font
);
6328 fprintf (stderr
, "fontset: %d\n", face
->fontset
);
6329 fprintf (stderr
, "underline: %d (%s)\n",
6331 SDATA (Fsymbol_name (face
->lface
[LFACE_UNDERLINE_INDEX
])));
6332 fprintf (stderr
, "hash: %d\n", face
->hash
);
6336 DEFUN ("dump-face", Fdump_face
, Sdump_face
, 0, 1, 0, doc
: /* */)
6343 fprintf (stderr
, "font selection order: ");
6344 for (i
= 0; i
< DIM (font_sort_order
); ++i
)
6345 fprintf (stderr
, "%d ", font_sort_order
[i
]);
6346 fprintf (stderr
, "\n");
6348 fprintf (stderr
, "alternative fonts: ");
6349 debug_print (Vface_alternative_font_family_alist
);
6350 fprintf (stderr
, "\n");
6352 for (i
= 0; i
< FRAME_FACE_CACHE (SELECTED_FRAME ())->used
; ++i
)
6353 Fdump_face (make_number (i
));
6359 face
= FACE_FROM_ID (SELECTED_FRAME (), XINT (n
));
6361 error ("Not a valid face");
6362 dump_realized_face (face
);
6369 DEFUN ("show-face-resources", Fshow_face_resources
, Sshow_face_resources
,
6370 0, 0, 0, doc
: /* */)
6373 fprintf (stderr
, "number of colors = %d\n", ncolors_allocated
);
6374 fprintf (stderr
, "number of pixmaps = %d\n", npixmaps_allocated
);
6375 fprintf (stderr
, "number of GCs = %d\n", ngcs
);
6379 #endif /* GLYPH_DEBUG */
6383 /***********************************************************************
6385 ***********************************************************************/
6388 syms_of_xfaces (void)
6390 DEFSYM (Qface
, "face");
6391 DEFSYM (Qface_no_inherit
, "face-no-inherit");
6392 DEFSYM (Qbitmap_spec_p
, "bitmap-spec-p");
6393 DEFSYM (Qframe_set_background_mode
, "frame-set-background-mode");
6395 /* Lisp face attribute keywords. */
6396 DEFSYM (QCfamily
, ":family");
6397 DEFSYM (QCheight
, ":height");
6398 DEFSYM (QCweight
, ":weight");
6399 DEFSYM (QCslant
, ":slant");
6400 DEFSYM (QCunderline
, ":underline");
6401 DEFSYM (QCinverse_video
, ":inverse-video");
6402 DEFSYM (QCreverse_video
, ":reverse-video");
6403 DEFSYM (QCforeground
, ":foreground");
6404 DEFSYM (QCbackground
, ":background");
6405 DEFSYM (QCstipple
, ":stipple");
6406 DEFSYM (QCwidth
, ":width");
6407 DEFSYM (QCfont
, ":font");
6408 DEFSYM (QCfontset
, ":fontset");
6409 DEFSYM (QCdistant_foreground
, ":distant-foreground");
6410 DEFSYM (QCbold
, ":bold");
6411 DEFSYM (QCitalic
, ":italic");
6412 DEFSYM (QCoverline
, ":overline");
6413 DEFSYM (QCstrike_through
, ":strike-through");
6414 DEFSYM (QCbox
, ":box");
6415 DEFSYM (QCinherit
, ":inherit");
6417 /* Symbols used for Lisp face attribute values. */
6418 DEFSYM (QCcolor
, ":color");
6419 DEFSYM (QCline_width
, ":line-width");
6420 DEFSYM (QCstyle
, ":style");
6421 DEFSYM (Qline
, "line");
6422 DEFSYM (Qwave
, "wave");
6423 DEFSYM (Qreleased_button
, "released-button");
6424 DEFSYM (Qpressed_button
, "pressed-button");
6425 DEFSYM (Qnormal
, "normal");
6426 DEFSYM (Qextra_light
, "extra-light");
6427 DEFSYM (Qlight
, "light");
6428 DEFSYM (Qsemi_light
, "semi-light");
6429 DEFSYM (Qsemi_bold
, "semi-bold");
6430 DEFSYM (Qbold
, "bold");
6431 DEFSYM (Qextra_bold
, "extra-bold");
6432 DEFSYM (Qultra_bold
, "ultra-bold");
6433 DEFSYM (Qoblique
, "oblique");
6434 DEFSYM (Qitalic
, "italic");
6435 DEFSYM (Qbackground_color
, "background-color");
6436 DEFSYM (Qforeground_color
, "foreground-color");
6437 DEFSYM (Qunspecified
, "unspecified");
6438 DEFSYM (QCignore_defface
, ":ignore-defface");
6440 DEFSYM (Qface_alias
, "face-alias");
6441 DEFSYM (Qdefault
, "default");
6442 DEFSYM (Qtool_bar
, "tool-bar");
6443 DEFSYM (Qregion
, "region");
6444 DEFSYM (Qfringe
, "fringe");
6445 DEFSYM (Qheader_line
, "header-line");
6446 DEFSYM (Qscroll_bar
, "scroll-bar");
6447 DEFSYM (Qmenu
, "menu");
6448 DEFSYM (Qcursor
, "cursor");
6449 DEFSYM (Qborder
, "border");
6450 DEFSYM (Qmouse
, "mouse");
6451 DEFSYM (Qmode_line_inactive
, "mode-line-inactive");
6452 DEFSYM (Qvertical_border
, "vertical-border");
6453 DEFSYM (Qtty_color_desc
, "tty-color-desc");
6454 DEFSYM (Qtty_color_standard_values
, "tty-color-standard-values");
6455 DEFSYM (Qtty_color_by_index
, "tty-color-by-index");
6456 DEFSYM (Qtty_color_alist
, "tty-color-alist");
6457 DEFSYM (Qscalable_fonts_allowed
, "scalable-fonts-allowed");
6459 Vparam_value_alist
= list1 (Fcons (Qnil
, Qnil
));
6460 staticpro (&Vparam_value_alist
);
6461 Vface_alternative_font_family_alist
= Qnil
;
6462 staticpro (&Vface_alternative_font_family_alist
);
6463 Vface_alternative_font_registry_alist
= Qnil
;
6464 staticpro (&Vface_alternative_font_registry_alist
);
6466 defsubr (&Sinternal_make_lisp_face
);
6467 defsubr (&Sinternal_lisp_face_p
);
6468 defsubr (&Sinternal_set_lisp_face_attribute
);
6469 #ifdef HAVE_WINDOW_SYSTEM
6470 defsubr (&Sinternal_set_lisp_face_attribute_from_resource
);
6472 defsubr (&Scolor_gray_p
);
6473 defsubr (&Scolor_supported_p
);
6474 #ifndef HAVE_X_WINDOWS
6475 defsubr (&Sx_load_color_file
);
6477 defsubr (&Sface_attribute_relative_p
);
6478 defsubr (&Smerge_face_attribute
);
6479 defsubr (&Sinternal_get_lisp_face_attribute
);
6480 defsubr (&Sinternal_lisp_face_attribute_values
);
6481 defsubr (&Sinternal_lisp_face_equal_p
);
6482 defsubr (&Sinternal_lisp_face_empty_p
);
6483 defsubr (&Sinternal_copy_lisp_face
);
6484 defsubr (&Sinternal_merge_in_global_face
);
6485 defsubr (&Sface_font
);
6486 defsubr (&Sframe_face_alist
);
6487 defsubr (&Sdisplay_supports_face_attributes_p
);
6488 defsubr (&Scolor_distance
);
6489 defsubr (&Sinternal_set_font_selection_order
);
6490 defsubr (&Sinternal_set_alternative_font_family_alist
);
6491 defsubr (&Sinternal_set_alternative_font_registry_alist
);
6492 defsubr (&Sface_attributes_as_vector
);
6494 defsubr (&Sdump_face
);
6495 defsubr (&Sshow_face_resources
);
6496 #endif /* GLYPH_DEBUG */
6497 defsubr (&Sclear_face_cache
);
6498 defsubr (&Stty_suppress_bold_inverse_default_colors
);
6500 #if defined DEBUG_X_COLORS && defined HAVE_X_WINDOWS
6501 defsubr (&Sdump_colors
);
6504 DEFVAR_LISP ("face-new-frame-defaults", Vface_new_frame_defaults
,
6505 doc
: /* List of global face definitions (for internal use only.) */);
6506 Vface_new_frame_defaults
= Qnil
;
6508 DEFVAR_LISP ("face-default-stipple", Vface_default_stipple
,
6509 doc
: /* Default stipple pattern used on monochrome displays.
6510 This stipple pattern is used on monochrome displays
6511 instead of shades of gray for a face background color.
6512 See `set-face-stipple' for possible values for this variable. */);
6513 Vface_default_stipple
= build_pure_c_string ("gray3");
6515 DEFVAR_LISP ("tty-defined-color-alist", Vtty_defined_color_alist
,
6516 doc
: /* An alist of defined terminal colors and their RGB values.
6517 See the docstring of `tty-color-alist' for the details. */);
6518 Vtty_defined_color_alist
= Qnil
;
6520 DEFVAR_LISP ("scalable-fonts-allowed", Vscalable_fonts_allowed
,
6521 doc
: /* Allowed scalable fonts.
6522 A value of nil means don't allow any scalable fonts.
6523 A value of t means allow any scalable font.
6524 Otherwise, value must be a list of regular expressions. A font may be
6525 scaled if its name matches a regular expression in the list.
6526 Note that if value is nil, a scalable font might still be used, if no
6527 other font of the appropriate family and registry is available. */);
6528 Vscalable_fonts_allowed
= Qnil
;
6530 DEFVAR_LISP ("face-ignored-fonts", Vface_ignored_fonts
,
6531 doc
: /* List of ignored fonts.
6532 Each element is a regular expression that matches names of fonts to
6534 Vface_ignored_fonts
= Qnil
;
6536 DEFVAR_LISP ("face-remapping-alist", Vface_remapping_alist
,
6537 doc
: /* Alist of face remappings.
6538 Each element is of the form:
6540 (FACE . REPLACEMENT),
6542 which causes display of the face FACE to use REPLACEMENT instead.
6543 REPLACEMENT is a face specification, i.e. one of the following:
6546 (2) a property list of attribute/value pairs, or
6547 (3) a list in which each element has the form of (1) or (2).
6549 List values for REPLACEMENT are merged to form the final face
6550 specification, with earlier entries taking precedence, in the same as
6551 as in the `face' text property.
6553 Face-name remapping cycles are suppressed; recursive references use
6554 the underlying face instead of the remapped face. So a remapping of
6557 (FACE EXTRA-FACE... FACE)
6561 (FACE (FACE-ATTR VAL ...) FACE)
6563 causes EXTRA-FACE... or (FACE-ATTR VAL ...) to be _merged_ with the
6564 existing definition of FACE. Note that this isn't necessary for the
6565 default face, since every face inherits from the default face.
6567 If this variable is made buffer-local, the face remapping takes effect
6568 only in that buffer. For instance, the mode my-mode could define a
6569 face `my-mode-default', and then in the mode setup function, do:
6571 (set (make-local-variable 'face-remapping-alist)
6572 '((default my-mode-default)))).
6574 Because Emacs normally only redraws screen areas when the underlying
6575 buffer contents change, you may need to call `redraw-display' after
6576 changing this variable for it to take effect. */);
6577 Vface_remapping_alist
= Qnil
;
6579 DEFVAR_LISP ("face-font-rescale-alist", Vface_font_rescale_alist
,
6580 doc
: /* Alist of fonts vs the rescaling factors.
6581 Each element is a cons (FONT-PATTERN . RESCALE-RATIO), where
6582 FONT-PATTERN is a font-spec or a regular expression matching a font name, and
6583 RESCALE-RATIO is a floating point number to specify how much larger
6584 \(or smaller) font we should use. For instance, if a face requests
6585 a font of 10 point, we actually use a font of 10 * RESCALE-RATIO point. */);
6586 Vface_font_rescale_alist
= Qnil
;
6588 #ifdef HAVE_WINDOW_SYSTEM
6589 defsubr (&Sbitmap_spec_p
);
6590 defsubr (&Sx_list_fonts
);
6591 defsubr (&Sinternal_face_x_get_resource
);
6592 defsubr (&Sx_family_fonts
);