(custom-group-value-create): Insert some
[emacs.git] / src / xfaces.c
blob0e3e6861eca3883d14bc9118638cb9ac9dfc97e4
1 /* xfaces.c -- "Face" primitives.
2 Copyright (C) 1993, 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008, 2009 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>. */
22 /* Faces.
24 When using Emacs with X, the display style of characters can be
25 changed by defining `faces'. Each face can specify the following
26 display attributes:
28 1. Font family name.
30 2. Font foundary name.
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'.
41 7. Foreground color.
43 8. Background color.
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
54 color.
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 correspoinding 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
92 created frames.
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'.
99 Face merging.
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.
109 Face realization.
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 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
122 them.
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.
137 Unibyte text.
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.
145 Font selection.
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,
170 etc.
172 2. Setting face-font-family-alternatives allows the user to
173 specify alternative font families to try if a family specified by a
174 face doesn't exist.
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
181 fonts.
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
192 the same.
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. */
202 #include <config.h>
203 #include <stdio.h>
204 #include <sys/types.h>
205 #include <sys/stat.h>
206 #include <stdio.h> /* This needs to be before termchar.h */
208 #include "lisp.h"
209 #include "character.h"
210 #include "charset.h"
211 #include "keyboard.h"
212 #include "frame.h"
213 #include "termhooks.h"
215 #ifdef HAVE_X_WINDOWS
216 #include "xterm.h"
217 #ifdef USE_MOTIF
218 #include <Xm/Xm.h>
219 #include <Xm/XmStrDefs.h>
220 #endif /* USE_MOTIF */
221 #endif /* HAVE_X_WINDOWS */
223 #ifdef MSDOS
224 #include "dosfns.h"
225 #endif
227 #ifdef WINDOWSNT
228 #include "w32term.h"
229 #include "fontset.h"
230 /* Redefine X specifics to W32 equivalents to avoid cluttering the
231 code with #ifdef blocks. */
232 #undef FRAME_X_DISPLAY_INFO
233 #define FRAME_X_DISPLAY_INFO FRAME_W32_DISPLAY_INFO
234 #define x_display_info w32_display_info
235 #define FRAME_X_FONT_TABLE FRAME_W32_FONT_TABLE
236 #define check_x check_w32
237 #define GCGraphicsExposures 0
238 #endif /* WINDOWSNT */
240 #ifdef HAVE_NS
241 #include "nsterm.h"
242 #undef FRAME_X_DISPLAY_INFO
243 #define FRAME_X_DISPLAY_INFO FRAME_NS_DISPLAY_INFO
244 #define x_display_info ns_display_info
245 #define FRAME_X_FONT_TABLE FRAME_NS_FONT_TABLE
246 #define check_x check_ns
247 #define GCGraphicsExposures 0
248 #endif /* HAVE_NS */
250 #include "buffer.h"
251 #include "dispextern.h"
252 #include "blockinput.h"
253 #include "window.h"
254 #include "intervals.h"
255 #include "termchar.h"
257 #include "font.h"
258 #ifdef HAVE_WINDOW_SYSTEM
259 #include "fontset.h"
260 #endif /* HAVE_WINDOW_SYSTEM */
262 #ifdef HAVE_X_WINDOWS
264 /* Compensate for a bug in Xos.h on some systems, on which it requires
265 time.h. On some such systems, Xos.h tries to redefine struct
266 timeval and struct timezone if USG is #defined while it is
267 #included. */
269 #ifdef XOS_NEEDS_TIME_H
270 #include <time.h>
271 #undef USG
272 #include <X11/Xos.h>
273 #define USG
274 #define __TIMEVAL__
275 #else /* not XOS_NEEDS_TIME_H */
276 #include <X11/Xos.h>
277 #endif /* not XOS_NEEDS_TIME_H */
279 #endif /* HAVE_X_WINDOWS */
281 #include <ctype.h>
283 /* Number of pt per inch (from the TeXbook). */
285 #define PT_PER_INCH 72.27
287 /* Non-zero if face attribute ATTR is unspecified. */
289 #define UNSPECIFIEDP(ATTR) EQ ((ATTR), Qunspecified)
291 /* Non-zero if face attribute ATTR is `ignore-defface'. */
293 #define IGNORE_DEFFACE_P(ATTR) EQ ((ATTR), Qignore_defface)
295 /* Value is the number of elements of VECTOR. */
297 #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
299 /* Make a copy of string S on the stack using alloca. Value is a pointer
300 to the copy. */
302 #define STRDUPA(S) strcpy ((char *) alloca (strlen ((S)) + 1), (S))
304 /* Make a copy of the contents of Lisp string S on the stack using
305 alloca. Value is a pointer to the copy. */
307 #define LSTRDUPA(S) STRDUPA (SDATA ((S)))
309 /* Size of hash table of realized faces in face caches (should be a
310 prime number). */
312 #define FACE_CACHE_BUCKETS_SIZE 1001
314 /* Keyword symbols used for face attribute names. */
316 Lisp_Object QCfamily, QCheight, QCweight, QCslant, QCunderline;
317 Lisp_Object QCinverse_video, QCforeground, QCbackground, QCstipple;
318 Lisp_Object QCwidth, QCfont, QCbold, QCitalic;
319 Lisp_Object QCreverse_video;
320 Lisp_Object QCoverline, QCstrike_through, QCbox, QCinherit;
321 Lisp_Object QCfontset;
323 /* Keywords symbols used for font properties. */
324 extern Lisp_Object QCfoundry, QCadstyle, QCregistry;
325 extern Lisp_Object QCspacing, QCsize, QCavgwidth;
326 extern Lisp_Object Qp;
328 /* Symbols used for attribute values. */
330 Lisp_Object Qnormal, Qbold, Qultra_light, Qextra_light, Qlight;
331 Lisp_Object Qsemi_light, Qsemi_bold, Qextra_bold, Qultra_bold;
332 Lisp_Object Qoblique, Qitalic, Qreverse_oblique, Qreverse_italic;
333 Lisp_Object Qultra_condensed, Qextra_condensed, Qcondensed;
334 Lisp_Object Qsemi_condensed, Qsemi_expanded, Qexpanded, Qextra_expanded;
335 Lisp_Object Qultra_expanded;
336 Lisp_Object Qreleased_button, Qpressed_button;
337 Lisp_Object QCstyle, QCcolor, QCline_width;
338 Lisp_Object Qunspecified;
339 Lisp_Object Qignore_defface;
341 char unspecified_fg[] = "unspecified-fg", unspecified_bg[] = "unspecified-bg";
343 /* The name of the function to call when the background of the frame
344 has changed, frame_set_background_mode. */
346 Lisp_Object Qframe_set_background_mode;
348 /* Names of basic faces. */
350 Lisp_Object Qdefault, Qtool_bar, Qregion, Qfringe;
351 Lisp_Object Qheader_line, Qscroll_bar, Qcursor, Qborder, Qmouse, Qmenu;
352 Lisp_Object Qmode_line_inactive, Qvertical_border;
353 extern Lisp_Object Qmode_line;
355 /* The symbol `face-alias'. A symbols having that property is an
356 alias for another face. Value of the property is the name of
357 the aliased face. */
359 Lisp_Object Qface_alias;
361 extern Lisp_Object Qcircular_list;
363 /* Default stipple pattern used on monochrome displays. This stipple
364 pattern is used on monochrome displays instead of shades of gray
365 for a face background color. See `set-face-stipple' for possible
366 values for this variable. */
368 Lisp_Object Vface_default_stipple;
370 /* Alist of alternative font families. Each element is of the form
371 (FAMILY FAMILY1 FAMILY2 ...). If fonts of FAMILY can't be loaded,
372 try FAMILY1, then FAMILY2, ... */
374 Lisp_Object Vface_alternative_font_family_alist;
376 /* Alist of alternative font registries. Each element is of the form
377 (REGISTRY REGISTRY1 REGISTRY2...). If fonts of REGISTRY can't be
378 loaded, try REGISTRY1, then REGISTRY2, ... */
380 Lisp_Object Vface_alternative_font_registry_alist;
382 /* Allowed scalable fonts. A value of nil means don't allow any
383 scalable fonts. A value of t means allow the use of any scalable
384 font. Otherwise, value must be a list of regular expressions. A
385 font may be scaled if its name matches a regular expression in the
386 list. */
388 Lisp_Object Vscalable_fonts_allowed, Qscalable_fonts_allowed;
390 /* List of regular expressions that matches names of fonts to ignore. */
392 Lisp_Object Vface_ignored_fonts;
394 /* Alist of font name patterns vs the rescaling factor. */
396 Lisp_Object Vface_font_rescale_alist;
398 /* Maximum number of fonts to consider in font_list. If not an
399 integer > 0, DEFAULT_FONT_LIST_LIMIT is used instead. */
401 Lisp_Object Vfont_list_limit;
402 #define DEFAULT_FONT_LIST_LIMIT 100
404 /* The symbols `foreground-color' and `background-color' which can be
405 used as part of a `face' property. This is for compatibility with
406 Emacs 20.2. */
408 Lisp_Object Qforeground_color, Qbackground_color;
410 /* The symbols `face' and `mouse-face' used as text properties. */
412 Lisp_Object Qface;
413 extern Lisp_Object Qmouse_face;
415 /* Property for basic faces which other faces cannot inherit. */
417 Lisp_Object Qface_no_inherit;
419 /* Error symbol for wrong_type_argument in load_pixmap. */
421 Lisp_Object Qbitmap_spec_p;
423 /* Alist of global face definitions. Each element is of the form
424 (FACE . LFACE) where FACE is a symbol naming a face and LFACE
425 is a Lisp vector of face attributes. These faces are used
426 to initialize faces for new frames. */
428 Lisp_Object Vface_new_frame_defaults;
430 /* Alist of face remappings. Each element is of the form:
431 (FACE REPLACEMENT...) which causes display of the face FACE to use
432 REPLACEMENT... instead. REPLACEMENT... is interpreted the same way
433 the value of a `face' text property is: it may be (1) A face name,
434 (2) A list of face names, (3) A property-list of face attribute/value
435 pairs, or (4) A list of face names intermixed with lists containing
436 face attribute/value pairs.
438 Multiple entries in REPLACEMENT... are merged together to form the final
439 result, with faces or attributes earlier in the list taking precedence
440 over those that are later.
442 Face-name remapping cycles are suppressed; recursive references use
443 the underlying face instead of the remapped face. */
445 Lisp_Object Vface_remapping_alist;
447 /* The next ID to assign to Lisp faces. */
449 static int next_lface_id;
451 /* A vector mapping Lisp face Id's to face names. */
453 static Lisp_Object *lface_id_to_name;
454 static int lface_id_to_name_size;
456 /* TTY color-related functions (defined in tty-colors.el). */
458 Lisp_Object Qtty_color_desc, Qtty_color_by_index, Qtty_color_standard_values;
460 /* The name of the function used to compute colors on TTYs. */
462 Lisp_Object Qtty_color_alist;
464 /* An alist of defined terminal colors and their RGB values. */
466 Lisp_Object Vtty_defined_color_alist;
468 /* Counter for calls to clear_face_cache. If this counter reaches
469 CLEAR_FONT_TABLE_COUNT, and a frame has more than
470 CLEAR_FONT_TABLE_NFONTS load, unused fonts are freed. */
472 static int clear_font_table_count;
473 #define CLEAR_FONT_TABLE_COUNT 100
474 #define CLEAR_FONT_TABLE_NFONTS 10
476 /* Non-zero means face attributes have been changed since the last
477 redisplay. Used in redisplay_internal. */
479 int face_change_count;
481 /* Non-zero means don't display bold text if a face's foreground
482 and background colors are the inverse of the default colors of the
483 display. This is a kluge to suppress `bold black' foreground text
484 which is hard to read on an LCD monitor. */
486 int tty_suppress_bold_inverse_default_colors_p;
488 /* A list of the form `((x . y))' used to avoid consing in
489 Finternal_set_lisp_face_attribute. */
491 static Lisp_Object Vparam_value_alist;
493 /* The total number of colors currently allocated. */
495 #if GLYPH_DEBUG
496 static int ncolors_allocated;
497 static int npixmaps_allocated;
498 static int ngcs;
499 #endif
501 /* Non-zero means the definition of the `menu' face for new frames has
502 been changed. */
504 int menu_face_changed_default;
507 /* Function prototypes. */
509 struct table_entry;
510 struct named_merge_point;
512 static void map_tty_color P_ ((struct frame *, struct face *,
513 enum lface_attribute_index, int *));
514 static Lisp_Object resolve_face_name P_ ((Lisp_Object, int));
515 static int may_use_scalable_font_p P_ ((const char *));
516 static void set_font_frame_param P_ ((Lisp_Object, Lisp_Object));
517 static int get_lface_attributes P_ ((struct frame *, Lisp_Object, Lisp_Object *,
518 int, struct named_merge_point *));
519 static int load_pixmap P_ ((struct frame *, Lisp_Object, unsigned *, unsigned *));
520 static struct frame *frame_or_selected_frame P_ ((Lisp_Object, int));
521 static void load_face_colors P_ ((struct frame *, struct face *, Lisp_Object *));
522 static void free_face_colors P_ ((struct frame *, struct face *));
523 static int face_color_gray_p P_ ((struct frame *, char *));
524 static struct face *realize_face P_ ((struct face_cache *, Lisp_Object *,
525 int));
526 static struct face *realize_non_ascii_face P_ ((struct frame *, Lisp_Object,
527 struct face *));
528 static struct face *realize_x_face P_ ((struct face_cache *, Lisp_Object *));
529 static struct face *realize_tty_face P_ ((struct face_cache *, Lisp_Object *));
530 static int realize_basic_faces P_ ((struct frame *));
531 static int realize_default_face P_ ((struct frame *));
532 static void realize_named_face P_ ((struct frame *, Lisp_Object, int));
533 static int lface_fully_specified_p P_ ((Lisp_Object *));
534 static int lface_equal_p P_ ((Lisp_Object *, Lisp_Object *));
535 static unsigned hash_string_case_insensitive P_ ((Lisp_Object));
536 static unsigned lface_hash P_ ((Lisp_Object *));
537 static int lface_same_font_attributes_p P_ ((Lisp_Object *, Lisp_Object *));
538 static struct face_cache *make_face_cache P_ ((struct frame *));
539 static void clear_face_gcs P_ ((struct face_cache *));
540 static void free_face_cache P_ ((struct face_cache *));
541 static int face_fontset P_ ((Lisp_Object *));
542 static void merge_face_vectors P_ ((struct frame *, Lisp_Object *, Lisp_Object*,
543 struct named_merge_point *));
544 static int merge_face_ref P_ ((struct frame *, Lisp_Object, Lisp_Object *,
545 int, struct named_merge_point *));
546 static int set_lface_from_font P_ ((struct frame *, Lisp_Object, Lisp_Object,
547 int));
548 static Lisp_Object lface_from_face_name P_ ((struct frame *, Lisp_Object, int));
549 static struct face *make_realized_face P_ ((Lisp_Object *));
550 static void cache_face P_ ((struct face_cache *, struct face *, unsigned));
551 static void uncache_face P_ ((struct face_cache *, struct face *));
553 #ifdef HAVE_WINDOW_SYSTEM
555 static GC x_create_gc P_ ((struct frame *, unsigned long, XGCValues *));
556 static void x_free_gc P_ ((struct frame *, GC));
558 #ifdef USE_X_TOOLKIT
559 static void x_update_menu_appearance P_ ((struct frame *));
561 extern void free_frame_menubar P_ ((struct frame *));
562 #endif /* USE_X_TOOLKIT */
564 #endif /* HAVE_WINDOW_SYSTEM */
567 /***********************************************************************
568 Utilities
569 ***********************************************************************/
571 #ifdef HAVE_X_WINDOWS
573 #ifdef DEBUG_X_COLORS
575 /* The following is a poor mans infrastructure for debugging X color
576 allocation problems on displays with PseudoColor-8. Some X servers
577 like 3.3.5 XF86_SVGA with Matrox cards apparently don't implement
578 color reference counts completely so that they don't signal an
579 error when a color is freed whose reference count is already 0.
580 Other X servers do. To help me debug this, the following code
581 implements a simple reference counting schema of its own, for a
582 single display/screen. --gerd. */
584 /* Reference counts for pixel colors. */
586 int color_count[256];
588 /* Register color PIXEL as allocated. */
590 void
591 register_color (pixel)
592 unsigned long pixel;
594 xassert (pixel < 256);
595 ++color_count[pixel];
599 /* Register color PIXEL as deallocated. */
601 void
602 unregister_color (pixel)
603 unsigned long pixel;
605 xassert (pixel < 256);
606 if (color_count[pixel] > 0)
607 --color_count[pixel];
608 else
609 abort ();
613 /* Register N colors from PIXELS as deallocated. */
615 void
616 unregister_colors (pixels, n)
617 unsigned long *pixels;
618 int n;
620 int i;
621 for (i = 0; i < n; ++i)
622 unregister_color (pixels[i]);
626 DEFUN ("dump-colors", Fdump_colors, Sdump_colors, 0, 0, 0,
627 doc: /* Dump currently allocated colors to stderr. */)
630 int i, n;
632 fputc ('\n', stderr);
634 for (i = n = 0; i < sizeof color_count / sizeof color_count[0]; ++i)
635 if (color_count[i])
637 fprintf (stderr, "%3d: %5d", i, color_count[i]);
638 ++n;
639 if (n % 5 == 0)
640 fputc ('\n', stderr);
641 else
642 fputc ('\t', stderr);
645 if (n % 5 != 0)
646 fputc ('\n', stderr);
647 return Qnil;
650 #endif /* DEBUG_X_COLORS */
653 /* Free colors used on frame F. PIXELS is an array of NPIXELS pixel
654 color values. Interrupt input must be blocked when this function
655 is called. */
657 void
658 x_free_colors (f, pixels, npixels)
659 struct frame *f;
660 unsigned long *pixels;
661 int npixels;
663 int class = FRAME_X_DISPLAY_INFO (f)->visual->class;
665 /* If display has an immutable color map, freeing colors is not
666 necessary and some servers don't allow it. So don't do it. */
667 if (class != StaticColor && class != StaticGray && class != TrueColor)
669 #ifdef DEBUG_X_COLORS
670 unregister_colors (pixels, npixels);
671 #endif
672 XFreeColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f),
673 pixels, npixels, 0);
678 /* Free colors used on frame F. PIXELS is an array of NPIXELS pixel
679 color values. Interrupt input must be blocked when this function
680 is called. */
682 void
683 x_free_dpy_colors (dpy, screen, cmap, pixels, npixels)
684 Display *dpy;
685 Screen *screen;
686 Colormap cmap;
687 unsigned long *pixels;
688 int npixels;
690 struct x_display_info *dpyinfo = x_display_info_for_display (dpy);
691 int class = dpyinfo->visual->class;
693 /* If display has an immutable color map, freeing colors is not
694 necessary and some servers don't allow it. So don't do it. */
695 if (class != StaticColor && class != StaticGray && class != TrueColor)
697 #ifdef DEBUG_X_COLORS
698 unregister_colors (pixels, npixels);
699 #endif
700 XFreeColors (dpy, cmap, pixels, npixels, 0);
705 /* Create and return a GC for use on frame F. GC values and mask
706 are given by XGCV and MASK. */
708 static INLINE GC
709 x_create_gc (f, mask, xgcv)
710 struct frame *f;
711 unsigned long mask;
712 XGCValues *xgcv;
714 GC gc;
715 BLOCK_INPUT;
716 gc = XCreateGC (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), mask, xgcv);
717 UNBLOCK_INPUT;
718 IF_DEBUG (++ngcs);
719 return gc;
723 /* Free GC which was used on frame F. */
725 static INLINE void
726 x_free_gc (f, gc)
727 struct frame *f;
728 GC gc;
730 eassert (interrupt_input_blocked);
731 IF_DEBUG (xassert (--ngcs >= 0));
732 XFreeGC (FRAME_X_DISPLAY (f), gc);
735 #endif /* HAVE_X_WINDOWS */
737 #ifdef WINDOWSNT
738 /* W32 emulation of GCs */
740 static INLINE GC
741 x_create_gc (f, mask, xgcv)
742 struct frame *f;
743 unsigned long mask;
744 XGCValues *xgcv;
746 GC gc;
747 BLOCK_INPUT;
748 gc = XCreateGC (NULL, FRAME_W32_WINDOW (f), mask, xgcv);
749 UNBLOCK_INPUT;
750 IF_DEBUG (++ngcs);
751 return gc;
755 /* Free GC which was used on frame F. */
757 static INLINE void
758 x_free_gc (f, gc)
759 struct frame *f;
760 GC gc;
762 IF_DEBUG (xassert (--ngcs >= 0));
763 xfree (gc);
766 #endif /* WINDOWSNT */
768 #ifdef HAVE_NS
769 /* NS emulation of GCs */
771 static INLINE GC
772 x_create_gc (f, mask, xgcv)
773 struct frame *f;
774 unsigned long mask;
775 XGCValues *xgcv;
777 GC gc = xmalloc (sizeof (*gc));
778 if (gc)
779 bcopy(xgcv, gc, sizeof(XGCValues));
780 return gc;
783 static INLINE void
784 x_free_gc (f, gc)
785 struct frame *f;
786 GC gc;
788 if (gc)
789 xfree (gc);
791 #endif /* HAVE_NS */
793 /* Like strcasecmp/stricmp. Used to compare parts of font names which
794 are in ISO8859-1. */
797 xstrcasecmp (s1, s2)
798 const unsigned char *s1, *s2;
800 while (*s1 && *s2)
802 unsigned char c1 = tolower (*s1);
803 unsigned char c2 = tolower (*s2);
804 if (c1 != c2)
805 return c1 < c2 ? -1 : 1;
806 ++s1, ++s2;
809 if (*s1 == 0)
810 return *s2 == 0 ? 0 : -1;
811 return 1;
815 /* If FRAME is nil, return a pointer to the selected frame.
816 Otherwise, check that FRAME is a live frame, and return a pointer
817 to it. NPARAM is the parameter number of FRAME, for
818 CHECK_LIVE_FRAME. This is here because it's a frequent pattern in
819 Lisp function definitions. */
821 static INLINE struct frame *
822 frame_or_selected_frame (frame, nparam)
823 Lisp_Object frame;
824 int nparam;
826 if (NILP (frame))
827 frame = selected_frame;
829 CHECK_LIVE_FRAME (frame);
830 return XFRAME (frame);
834 /***********************************************************************
835 Frames and faces
836 ***********************************************************************/
838 /* Initialize face cache and basic faces for frame F. */
840 void
841 init_frame_faces (f)
842 struct frame *f;
844 /* Make a face cache, if F doesn't have one. */
845 if (FRAME_FACE_CACHE (f) == NULL)
846 FRAME_FACE_CACHE (f) = make_face_cache (f);
848 #ifdef HAVE_WINDOW_SYSTEM
849 /* Make the image cache. */
850 if (FRAME_WINDOW_P (f))
852 /* We initialize the image cache when creating the first frame
853 on a terminal, and not during terminal creation. This way,
854 `x-open-connection' on a tty won't create an image cache. */
855 if (FRAME_IMAGE_CACHE (f) == NULL)
856 FRAME_IMAGE_CACHE (f) = make_image_cache ();
857 ++FRAME_IMAGE_CACHE (f)->refcount;
859 #endif /* HAVE_WINDOW_SYSTEM */
861 /* Realize basic faces. Must have enough information in frame
862 parameters to realize basic faces at this point. */
863 #ifdef HAVE_X_WINDOWS
864 if (!FRAME_X_P (f) || FRAME_X_WINDOW (f))
865 #endif
866 #ifdef WINDOWSNT
867 if (!FRAME_WINDOW_P (f) || FRAME_W32_WINDOW (f))
868 #endif
869 #ifdef HAVE_NS
870 if (!FRAME_NS_P (f) || FRAME_NS_WINDOW (f))
871 #endif
872 if (!realize_basic_faces (f))
873 abort ();
877 /* Free face cache of frame F. Called from delete_frame. */
879 void
880 free_frame_faces (f)
881 struct frame *f;
883 struct face_cache *face_cache = FRAME_FACE_CACHE (f);
885 if (face_cache)
887 free_face_cache (face_cache);
888 FRAME_FACE_CACHE (f) = NULL;
891 #ifdef HAVE_WINDOW_SYSTEM
892 if (FRAME_WINDOW_P (f))
894 struct image_cache *image_cache = FRAME_IMAGE_CACHE (f);
895 if (image_cache)
897 --image_cache->refcount;
898 if (image_cache->refcount == 0)
899 free_image_cache (f);
902 #endif /* HAVE_WINDOW_SYSTEM */
906 /* Clear face caches, and recompute basic faces for frame F. Call
907 this after changing frame parameters on which those faces depend,
908 or when realized faces have been freed due to changing attributes
909 of named faces. */
911 void
912 recompute_basic_faces (f)
913 struct frame *f;
915 if (FRAME_FACE_CACHE (f))
917 clear_face_cache (0);
918 if (!realize_basic_faces (f))
919 abort ();
924 /* Clear the face caches of all frames. CLEAR_FONTS_P non-zero means
925 try to free unused fonts, too. */
927 void
928 clear_face_cache (clear_fonts_p)
929 int clear_fonts_p;
931 #ifdef HAVE_WINDOW_SYSTEM
932 Lisp_Object tail, frame;
933 struct frame *f;
935 if (clear_fonts_p
936 || ++clear_font_table_count == CLEAR_FONT_TABLE_COUNT)
938 #if 0
939 /* Not yet implemented. */
940 clear_font_cache (frame);
941 #endif
943 /* From time to time see if we can unload some fonts. This also
944 frees all realized faces on all frames. Fonts needed by
945 faces will be loaded again when faces are realized again. */
946 clear_font_table_count = 0;
948 FOR_EACH_FRAME (tail, frame)
950 struct frame *f = XFRAME (frame);
951 if (FRAME_WINDOW_P (f)
952 && FRAME_X_DISPLAY_INFO (f)->n_fonts > CLEAR_FONT_TABLE_NFONTS)
953 free_all_realized_faces (frame);
956 else
958 /* Clear GCs of realized faces. */
959 FOR_EACH_FRAME (tail, frame)
961 f = XFRAME (frame);
962 if (FRAME_WINDOW_P (f))
963 clear_face_gcs (FRAME_FACE_CACHE (f));
965 clear_image_caches (Qnil);
967 #endif /* HAVE_WINDOW_SYSTEM */
971 DEFUN ("clear-face-cache", Fclear_face_cache, Sclear_face_cache, 0, 1, 0,
972 doc: /* Clear face caches on all frames.
973 Optional THOROUGHLY non-nil means try to free unused fonts, too. */)
974 (thoroughly)
975 Lisp_Object thoroughly;
977 clear_face_cache (!NILP (thoroughly));
978 ++face_change_count;
979 ++windows_or_buffers_changed;
980 return Qnil;
984 /***********************************************************************
985 X Pixmaps
986 ***********************************************************************/
988 #ifdef HAVE_WINDOW_SYSTEM
990 DEFUN ("bitmap-spec-p", Fbitmap_spec_p, Sbitmap_spec_p, 1, 1, 0,
991 doc: /* Value is non-nil if OBJECT is a valid bitmap specification.
992 A bitmap specification is either a string, a file name, or a list
993 \(WIDTH HEIGHT DATA) where WIDTH is the pixel width of the bitmap,
994 HEIGHT is its height, and DATA is a string containing the bits of
995 the pixmap. Bits are stored row by row, each row occupies
996 \(WIDTH + 7)/8 bytes. */)
997 (object)
998 Lisp_Object object;
1000 int pixmap_p = 0;
1002 if (STRINGP (object))
1003 /* If OBJECT is a string, it's a file name. */
1004 pixmap_p = 1;
1005 else if (CONSP (object))
1007 /* Otherwise OBJECT must be (WIDTH HEIGHT DATA), WIDTH and
1008 HEIGHT must be integers > 0, and DATA must be string large
1009 enough to hold a bitmap of the specified size. */
1010 Lisp_Object width, height, data;
1012 height = width = data = Qnil;
1014 if (CONSP (object))
1016 width = XCAR (object);
1017 object = XCDR (object);
1018 if (CONSP (object))
1020 height = XCAR (object);
1021 object = XCDR (object);
1022 if (CONSP (object))
1023 data = XCAR (object);
1027 if (NATNUMP (width) && NATNUMP (height) && STRINGP (data))
1029 int bytes_per_row = ((XFASTINT (width) + BITS_PER_CHAR - 1)
1030 / BITS_PER_CHAR);
1031 if (SBYTES (data) >= bytes_per_row * XINT (height))
1032 pixmap_p = 1;
1036 return pixmap_p ? Qt : Qnil;
1040 /* Load a bitmap according to NAME (which is either a file name or a
1041 pixmap spec) for use on frame F. Value is the bitmap_id (see
1042 xfns.c). If NAME is nil, return with a bitmap id of zero. If
1043 bitmap cannot be loaded, display a message saying so, and return
1044 zero. Store the bitmap width in *W_PTR and its height in *H_PTR,
1045 if these pointers are not null. */
1047 static int
1048 load_pixmap (f, name, w_ptr, h_ptr)
1049 FRAME_PTR f;
1050 Lisp_Object name;
1051 unsigned int *w_ptr, *h_ptr;
1053 int bitmap_id;
1055 if (NILP (name))
1056 return 0;
1058 CHECK_TYPE (!NILP (Fbitmap_spec_p (name)), Qbitmap_spec_p, name);
1060 BLOCK_INPUT;
1061 if (CONSP (name))
1063 /* Decode a bitmap spec into a bitmap. */
1065 int h, w;
1066 Lisp_Object bits;
1068 w = XINT (Fcar (name));
1069 h = XINT (Fcar (Fcdr (name)));
1070 bits = Fcar (Fcdr (Fcdr (name)));
1072 bitmap_id = x_create_bitmap_from_data (f, SDATA (bits),
1073 w, h);
1075 else
1077 /* It must be a string -- a file name. */
1078 bitmap_id = x_create_bitmap_from_file (f, name);
1080 UNBLOCK_INPUT;
1082 if (bitmap_id < 0)
1084 add_to_log ("Invalid or undefined bitmap `%s'", name, Qnil);
1085 bitmap_id = 0;
1087 if (w_ptr)
1088 *w_ptr = 0;
1089 if (h_ptr)
1090 *h_ptr = 0;
1092 else
1094 #if GLYPH_DEBUG
1095 ++npixmaps_allocated;
1096 #endif
1097 if (w_ptr)
1098 *w_ptr = x_bitmap_width (f, bitmap_id);
1100 if (h_ptr)
1101 *h_ptr = x_bitmap_height (f, bitmap_id);
1104 return bitmap_id;
1107 #endif /* HAVE_WINDOW_SYSTEM */
1111 /***********************************************************************
1112 X Colors
1113 ***********************************************************************/
1115 /* Parse RGB_LIST, and fill in the RGB fields of COLOR.
1116 RGB_LIST should contain (at least) 3 lisp integers.
1117 Return 0 if there's a problem with RGB_LIST, otherwise return 1. */
1119 static int
1120 parse_rgb_list (rgb_list, color)
1121 Lisp_Object rgb_list;
1122 XColor *color;
1124 #define PARSE_RGB_LIST_FIELD(field) \
1125 if (CONSP (rgb_list) && INTEGERP (XCAR (rgb_list))) \
1127 color->field = XINT (XCAR (rgb_list)); \
1128 rgb_list = XCDR (rgb_list); \
1130 else \
1131 return 0;
1133 PARSE_RGB_LIST_FIELD (red);
1134 PARSE_RGB_LIST_FIELD (green);
1135 PARSE_RGB_LIST_FIELD (blue);
1137 return 1;
1141 /* Lookup on frame F the color described by the lisp string COLOR.
1142 The resulting tty color is returned in TTY_COLOR; if STD_COLOR is
1143 non-zero, then the `standard' definition of the same color is
1144 returned in it. */
1146 static int
1147 tty_lookup_color (f, color, tty_color, std_color)
1148 struct frame *f;
1149 Lisp_Object color;
1150 XColor *tty_color, *std_color;
1152 Lisp_Object frame, color_desc;
1154 if (!STRINGP (color) || NILP (Ffboundp (Qtty_color_desc)))
1155 return 0;
1157 XSETFRAME (frame, f);
1159 color_desc = call2 (Qtty_color_desc, color, frame);
1160 if (CONSP (color_desc) && CONSP (XCDR (color_desc)))
1162 Lisp_Object rgb;
1164 if (! INTEGERP (XCAR (XCDR (color_desc))))
1165 return 0;
1167 tty_color->pixel = XINT (XCAR (XCDR (color_desc)));
1169 rgb = XCDR (XCDR (color_desc));
1170 if (! parse_rgb_list (rgb, tty_color))
1171 return 0;
1173 /* Should we fill in STD_COLOR too? */
1174 if (std_color)
1176 /* Default STD_COLOR to the same as TTY_COLOR. */
1177 *std_color = *tty_color;
1179 /* Do a quick check to see if the returned descriptor is
1180 actually _exactly_ equal to COLOR, otherwise we have to
1181 lookup STD_COLOR separately. If it's impossible to lookup
1182 a standard color, we just give up and use TTY_COLOR. */
1183 if ((!STRINGP (XCAR (color_desc))
1184 || NILP (Fstring_equal (color, XCAR (color_desc))))
1185 && !NILP (Ffboundp (Qtty_color_standard_values)))
1187 /* Look up STD_COLOR separately. */
1188 rgb = call1 (Qtty_color_standard_values, color);
1189 if (! parse_rgb_list (rgb, std_color))
1190 return 0;
1194 return 1;
1196 else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist"))))
1197 /* We were called early during startup, and the colors are not
1198 yet set up in tty-defined-color-alist. Don't return a failure
1199 indication, since this produces the annoying "Unable to
1200 load color" messages in the *Messages* buffer. */
1201 return 1;
1202 else
1203 /* tty-color-desc seems to have returned a bad value. */
1204 return 0;
1207 /* A version of defined_color for non-X frames. */
1210 tty_defined_color (f, color_name, color_def, alloc)
1211 struct frame *f;
1212 char *color_name;
1213 XColor *color_def;
1214 int alloc;
1216 int status = 1;
1218 /* Defaults. */
1219 color_def->pixel = FACE_TTY_DEFAULT_COLOR;
1220 color_def->red = 0;
1221 color_def->blue = 0;
1222 color_def->green = 0;
1224 if (*color_name)
1225 status = tty_lookup_color (f, build_string (color_name), color_def, NULL);
1227 if (color_def->pixel == FACE_TTY_DEFAULT_COLOR && *color_name)
1229 if (strcmp (color_name, "unspecified-fg") == 0)
1230 color_def->pixel = FACE_TTY_DEFAULT_FG_COLOR;
1231 else if (strcmp (color_name, "unspecified-bg") == 0)
1232 color_def->pixel = FACE_TTY_DEFAULT_BG_COLOR;
1235 if (color_def->pixel != FACE_TTY_DEFAULT_COLOR)
1236 status = 1;
1238 return status;
1242 /* Decide if color named COLOR_NAME is valid for the display
1243 associated with the frame F; if so, return the rgb values in
1244 COLOR_DEF. If ALLOC is nonzero, allocate a new colormap cell.
1246 This does the right thing for any type of frame. */
1249 defined_color (f, color_name, color_def, alloc)
1250 struct frame *f;
1251 char *color_name;
1252 XColor *color_def;
1253 int alloc;
1255 if (!FRAME_WINDOW_P (f))
1256 return tty_defined_color (f, color_name, color_def, alloc);
1257 #ifdef HAVE_X_WINDOWS
1258 else if (FRAME_X_P (f))
1259 return x_defined_color (f, color_name, color_def, alloc);
1260 #endif
1261 #ifdef WINDOWSNT
1262 else if (FRAME_W32_P (f))
1263 return w32_defined_color (f, color_name, color_def, alloc);
1264 #endif
1265 #ifdef HAVE_NS
1266 else if (FRAME_NS_P (f))
1267 return ns_defined_color (f, color_name, color_def, alloc, 1);
1268 #endif
1269 else
1270 abort ();
1274 /* Given the index IDX of a tty color on frame F, return its name, a
1275 Lisp string. */
1277 Lisp_Object
1278 tty_color_name (f, idx)
1279 struct frame *f;
1280 int idx;
1282 if (idx >= 0 && !NILP (Ffboundp (Qtty_color_by_index)))
1284 Lisp_Object frame;
1285 Lisp_Object coldesc;
1287 XSETFRAME (frame, f);
1288 coldesc = call2 (Qtty_color_by_index, make_number (idx), frame);
1290 if (!NILP (coldesc))
1291 return XCAR (coldesc);
1293 #ifdef MSDOS
1294 /* We can have an MSDOG frame under -nw for a short window of
1295 opportunity before internal_terminal_init is called. DTRT. */
1296 if (FRAME_MSDOS_P (f) && !inhibit_window_system)
1297 return msdos_stdcolor_name (idx);
1298 #endif
1300 if (idx == FACE_TTY_DEFAULT_FG_COLOR)
1301 return build_string (unspecified_fg);
1302 if (idx == FACE_TTY_DEFAULT_BG_COLOR)
1303 return build_string (unspecified_bg);
1305 return Qunspecified;
1309 /* Return non-zero if COLOR_NAME is a shade of gray (or white or
1310 black) on frame F.
1312 The criterion implemented here is not a terribly sophisticated one. */
1314 static int
1315 face_color_gray_p (f, color_name)
1316 struct frame *f;
1317 char *color_name;
1319 XColor color;
1320 int gray_p;
1322 if (defined_color (f, color_name, &color, 0))
1323 gray_p = (/* Any color sufficiently close to black counts as grey. */
1324 (color.red < 5000 && color.green < 5000 && color.blue < 5000)
1326 ((eabs (color.red - color.green)
1327 < max (color.red, color.green) / 20)
1328 && (eabs (color.green - color.blue)
1329 < max (color.green, color.blue) / 20)
1330 && (eabs (color.blue - color.red)
1331 < max (color.blue, color.red) / 20)));
1332 else
1333 gray_p = 0;
1335 return gray_p;
1339 /* Return non-zero if color COLOR_NAME can be displayed on frame F.
1340 BACKGROUND_P non-zero means the color will be used as background
1341 color. */
1343 static int
1344 face_color_supported_p (f, color_name, background_p)
1345 struct frame *f;
1346 char *color_name;
1347 int background_p;
1349 Lisp_Object frame;
1350 XColor not_used;
1352 XSETFRAME (frame, f);
1353 return
1354 #ifdef HAVE_WINDOW_SYSTEM
1355 FRAME_WINDOW_P (f)
1356 ? (!NILP (Fxw_display_color_p (frame))
1357 || xstrcasecmp (color_name, "black") == 0
1358 || xstrcasecmp (color_name, "white") == 0
1359 || (background_p
1360 && face_color_gray_p (f, color_name))
1361 || (!NILP (Fx_display_grayscale_p (frame))
1362 && face_color_gray_p (f, color_name)))
1364 #endif
1365 tty_defined_color (f, color_name, &not_used, 0);
1369 DEFUN ("color-gray-p", Fcolor_gray_p, Scolor_gray_p, 1, 2, 0,
1370 doc: /* Return non-nil if COLOR is a shade of gray (or white or black).
1371 FRAME specifies the frame and thus the display for interpreting COLOR.
1372 If FRAME is nil or omitted, use the selected frame. */)
1373 (color, frame)
1374 Lisp_Object color, frame;
1376 struct frame *f;
1378 CHECK_STRING (color);
1379 if (NILP (frame))
1380 frame = selected_frame;
1381 else
1382 CHECK_FRAME (frame);
1383 f = XFRAME (frame);
1384 return face_color_gray_p (f, SDATA (color)) ? Qt : Qnil;
1388 DEFUN ("color-supported-p", Fcolor_supported_p,
1389 Scolor_supported_p, 1, 3, 0,
1390 doc: /* Return non-nil if COLOR can be displayed on FRAME.
1391 BACKGROUND-P non-nil means COLOR is used as a background.
1392 Otherwise, this function tells whether it can be used as a foreground.
1393 If FRAME is nil or omitted, use the selected frame.
1394 COLOR must be a valid color name. */)
1395 (color, frame, background_p)
1396 Lisp_Object frame, color, background_p;
1398 struct frame *f;
1400 CHECK_STRING (color);
1401 if (NILP (frame))
1402 frame = selected_frame;
1403 else
1404 CHECK_FRAME (frame);
1405 f = XFRAME (frame);
1406 if (face_color_supported_p (f, SDATA (color), !NILP (background_p)))
1407 return Qt;
1408 return Qnil;
1412 /* Load color with name NAME for use by face FACE on frame F.
1413 TARGET_INDEX must be one of LFACE_FOREGROUND_INDEX,
1414 LFACE_BACKGROUND_INDEX, LFACE_UNDERLINE_INDEX, LFACE_OVERLINE_INDEX,
1415 LFACE_STRIKE_THROUGH_INDEX, or LFACE_BOX_INDEX. Value is the
1416 pixel color. If color cannot be loaded, display a message, and
1417 return the foreground, background or underline color of F, but
1418 record that fact in flags of the face so that we don't try to free
1419 these colors. */
1421 unsigned long
1422 load_color (f, face, name, target_index)
1423 struct frame *f;
1424 struct face *face;
1425 Lisp_Object name;
1426 enum lface_attribute_index target_index;
1428 XColor color;
1430 xassert (STRINGP (name));
1431 xassert (target_index == LFACE_FOREGROUND_INDEX
1432 || target_index == LFACE_BACKGROUND_INDEX
1433 || target_index == LFACE_UNDERLINE_INDEX
1434 || target_index == LFACE_OVERLINE_INDEX
1435 || target_index == LFACE_STRIKE_THROUGH_INDEX
1436 || target_index == LFACE_BOX_INDEX);
1438 /* if the color map is full, defined_color will return a best match
1439 to the values in an existing cell. */
1440 if (!defined_color (f, SDATA (name), &color, 1))
1442 add_to_log ("Unable to load color \"%s\"", name, Qnil);
1444 switch (target_index)
1446 case LFACE_FOREGROUND_INDEX:
1447 face->foreground_defaulted_p = 1;
1448 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1449 break;
1451 case LFACE_BACKGROUND_INDEX:
1452 face->background_defaulted_p = 1;
1453 color.pixel = FRAME_BACKGROUND_PIXEL (f);
1454 break;
1456 case LFACE_UNDERLINE_INDEX:
1457 face->underline_defaulted_p = 1;
1458 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1459 break;
1461 case LFACE_OVERLINE_INDEX:
1462 face->overline_color_defaulted_p = 1;
1463 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1464 break;
1466 case LFACE_STRIKE_THROUGH_INDEX:
1467 face->strike_through_color_defaulted_p = 1;
1468 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1469 break;
1471 case LFACE_BOX_INDEX:
1472 face->box_color_defaulted_p = 1;
1473 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1474 break;
1476 default:
1477 abort ();
1480 #if GLYPH_DEBUG
1481 else
1482 ++ncolors_allocated;
1483 #endif
1485 return color.pixel;
1489 #ifdef HAVE_WINDOW_SYSTEM
1491 /* Load colors for face FACE which is used on frame F. Colors are
1492 specified by slots LFACE_BACKGROUND_INDEX and LFACE_FOREGROUND_INDEX
1493 of ATTRS. If the background color specified is not supported on F,
1494 try to emulate gray colors with a stipple from Vface_default_stipple. */
1496 static void
1497 load_face_colors (f, face, attrs)
1498 struct frame *f;
1499 struct face *face;
1500 Lisp_Object *attrs;
1502 Lisp_Object fg, bg;
1504 bg = attrs[LFACE_BACKGROUND_INDEX];
1505 fg = attrs[LFACE_FOREGROUND_INDEX];
1507 /* Swap colors if face is inverse-video. */
1508 if (EQ (attrs[LFACE_INVERSE_INDEX], Qt))
1510 Lisp_Object tmp;
1511 tmp = fg;
1512 fg = bg;
1513 bg = tmp;
1516 /* Check for support for foreground, not for background because
1517 face_color_supported_p is smart enough to know that grays are
1518 "supported" as background because we are supposed to use stipple
1519 for them. */
1520 if (!face_color_supported_p (f, SDATA (bg), 0)
1521 && !NILP (Fbitmap_spec_p (Vface_default_stipple)))
1523 x_destroy_bitmap (f, face->stipple);
1524 face->stipple = load_pixmap (f, Vface_default_stipple,
1525 &face->pixmap_w, &face->pixmap_h);
1528 face->background = load_color (f, face, bg, LFACE_BACKGROUND_INDEX);
1529 face->foreground = load_color (f, face, fg, LFACE_FOREGROUND_INDEX);
1533 /* Free color PIXEL on frame F. */
1535 void
1536 unload_color (f, pixel)
1537 struct frame *f;
1538 unsigned long pixel;
1540 #ifdef HAVE_X_WINDOWS
1541 if (pixel != -1)
1543 BLOCK_INPUT;
1544 x_free_colors (f, &pixel, 1);
1545 UNBLOCK_INPUT;
1547 #endif
1551 /* Free colors allocated for FACE. */
1553 static void
1554 free_face_colors (f, face)
1555 struct frame *f;
1556 struct face *face;
1558 /* PENDING(NS): need to do something here? */
1559 #ifdef HAVE_X_WINDOWS
1560 if (face->colors_copied_bitwise_p)
1561 return;
1563 BLOCK_INPUT;
1565 if (!face->foreground_defaulted_p)
1567 x_free_colors (f, &face->foreground, 1);
1568 IF_DEBUG (--ncolors_allocated);
1571 if (!face->background_defaulted_p)
1573 x_free_colors (f, &face->background, 1);
1574 IF_DEBUG (--ncolors_allocated);
1577 if (face->underline_p
1578 && !face->underline_defaulted_p)
1580 x_free_colors (f, &face->underline_color, 1);
1581 IF_DEBUG (--ncolors_allocated);
1584 if (face->overline_p
1585 && !face->overline_color_defaulted_p)
1587 x_free_colors (f, &face->overline_color, 1);
1588 IF_DEBUG (--ncolors_allocated);
1591 if (face->strike_through_p
1592 && !face->strike_through_color_defaulted_p)
1594 x_free_colors (f, &face->strike_through_color, 1);
1595 IF_DEBUG (--ncolors_allocated);
1598 if (face->box != FACE_NO_BOX
1599 && !face->box_color_defaulted_p)
1601 x_free_colors (f, &face->box_color, 1);
1602 IF_DEBUG (--ncolors_allocated);
1605 UNBLOCK_INPUT;
1606 #endif /* HAVE_X_WINDOWS */
1609 #endif /* HAVE_WINDOW_SYSTEM */
1613 /***********************************************************************
1614 XLFD Font Names
1615 ***********************************************************************/
1617 /* An enumerator for each field of an XLFD font name. */
1619 enum xlfd_field
1621 XLFD_FOUNDRY,
1622 XLFD_FAMILY,
1623 XLFD_WEIGHT,
1624 XLFD_SLANT,
1625 XLFD_SWIDTH,
1626 XLFD_ADSTYLE,
1627 XLFD_PIXEL_SIZE,
1628 XLFD_POINT_SIZE,
1629 XLFD_RESX,
1630 XLFD_RESY,
1631 XLFD_SPACING,
1632 XLFD_AVGWIDTH,
1633 XLFD_REGISTRY,
1634 XLFD_ENCODING,
1635 XLFD_LAST
1638 /* An enumerator for each possible slant value of a font. Taken from
1639 the XLFD specification. */
1641 enum xlfd_slant
1643 XLFD_SLANT_UNKNOWN,
1644 XLFD_SLANT_ROMAN,
1645 XLFD_SLANT_ITALIC,
1646 XLFD_SLANT_OBLIQUE,
1647 XLFD_SLANT_REVERSE_ITALIC,
1648 XLFD_SLANT_REVERSE_OBLIQUE,
1649 XLFD_SLANT_OTHER
1652 /* Relative font weight according to XLFD documentation. */
1654 enum xlfd_weight
1656 XLFD_WEIGHT_UNKNOWN,
1657 XLFD_WEIGHT_ULTRA_LIGHT, /* 10 */
1658 XLFD_WEIGHT_EXTRA_LIGHT, /* 20 */
1659 XLFD_WEIGHT_LIGHT, /* 30 */
1660 XLFD_WEIGHT_SEMI_LIGHT, /* 40: SemiLight, Book, ... */
1661 XLFD_WEIGHT_MEDIUM, /* 50: Medium, Normal, Regular, ... */
1662 XLFD_WEIGHT_SEMI_BOLD, /* 60: SemiBold, DemiBold, ... */
1663 XLFD_WEIGHT_BOLD, /* 70: Bold, ... */
1664 XLFD_WEIGHT_EXTRA_BOLD, /* 80: ExtraBold, Heavy, ... */
1665 XLFD_WEIGHT_ULTRA_BOLD /* 90: UltraBold, Black, ... */
1668 /* Relative proportionate width. */
1670 enum xlfd_swidth
1672 XLFD_SWIDTH_UNKNOWN,
1673 XLFD_SWIDTH_ULTRA_CONDENSED, /* 10 */
1674 XLFD_SWIDTH_EXTRA_CONDENSED, /* 20 */
1675 XLFD_SWIDTH_CONDENSED, /* 30: Condensed, Narrow, Compressed, ... */
1676 XLFD_SWIDTH_SEMI_CONDENSED, /* 40: semicondensed */
1677 XLFD_SWIDTH_MEDIUM, /* 50: Medium, Normal, Regular, ... */
1678 XLFD_SWIDTH_SEMI_EXPANDED, /* 60: SemiExpanded, DemiExpanded, ... */
1679 XLFD_SWIDTH_EXPANDED, /* 70: Expanded... */
1680 XLFD_SWIDTH_EXTRA_EXPANDED, /* 80: ExtraExpanded, Wide... */
1681 XLFD_SWIDTH_ULTRA_EXPANDED /* 90: UltraExpanded... */
1684 /* Order by which font selection chooses fonts. The default values
1685 mean `first, find a best match for the font width, then for the
1686 font height, then for weight, then for slant.' This variable can be
1687 set via set-face-font-sort-order. */
1689 static int font_sort_order[4];
1691 #ifdef HAVE_WINDOW_SYSTEM
1693 static enum font_property_index font_props_for_sorting[FONT_SIZE_INDEX];
1695 static int
1696 compare_fonts_by_sort_order (v1, v2)
1697 const void *v1, *v2;
1699 Lisp_Object font1 = *(Lisp_Object *) v1;
1700 Lisp_Object font2 = *(Lisp_Object *) v2;
1701 int i;
1703 for (i = 0; i < FONT_SIZE_INDEX; i++)
1705 enum font_property_index idx = font_props_for_sorting[i];
1706 Lisp_Object val1 = AREF (font1, idx), val2 = AREF (font2, idx);
1707 int result;
1709 if (idx <= FONT_REGISTRY_INDEX)
1711 if (STRINGP (val1))
1712 result = STRINGP (val2) ? strcmp (SDATA (val1), SDATA (val2)) : -1;
1713 else
1714 result = STRINGP (val2) ? 1 : 0;
1716 else
1718 if (INTEGERP (val1))
1719 result = INTEGERP (val2) ? XINT (val1) - XINT (val2) : -1;
1720 else
1721 result = INTEGERP (val2) ? 1 : 0;
1723 if (result)
1724 return result;
1726 return 0;
1729 DEFUN ("x-family-fonts", Fx_family_fonts, Sx_family_fonts, 0, 2, 0,
1730 doc: /* Return a list of available fonts of family FAMILY on FRAME.
1731 If FAMILY is omitted or nil, list all families.
1732 Otherwise, FAMILY must be a string, possibly containing wildcards
1733 `?' and `*'.
1734 If FRAME is omitted or nil, use the selected frame.
1735 Each element of the result is a vector [FAMILY WIDTH POINT-SIZE WEIGHT
1736 SLANT FIXED-P FULL REGISTRY-AND-ENCODING].
1737 FAMILY is the font family name. POINT-SIZE is the size of the
1738 font in 1/10 pt. WIDTH, WEIGHT, and SLANT are symbols describing the
1739 width, weight and slant of the font. These symbols are the same as for
1740 face attributes. FIXED-P is non-nil if the font is fixed-pitch.
1741 FULL is the full name of the font, and REGISTRY-AND-ENCODING is a string
1742 giving the registry and encoding of the font.
1743 The result list is sorted according to the current setting of
1744 the face font sort order. */)
1745 (family, frame)
1746 Lisp_Object family, frame;
1748 Lisp_Object font_spec, vec;
1749 int i, nfonts;
1750 Lisp_Object result;
1752 if (NILP (frame))
1753 frame = selected_frame;
1754 CHECK_LIVE_FRAME (frame);
1756 font_spec = Ffont_spec (0, NULL);
1757 if (!NILP (family))
1759 CHECK_STRING (family);
1760 font_parse_family_registry (family, Qnil, font_spec);
1762 vec = font_list_entities (frame, font_spec);
1763 nfonts = ASIZE (vec);
1764 if (nfonts == 0)
1765 return Qnil;
1766 if (nfonts > 1)
1768 for (i = 0; i < 4; i++)
1769 switch (font_sort_order[i])
1771 case XLFD_SWIDTH:
1772 font_props_for_sorting[i] = FONT_WIDTH_INDEX; break;
1773 case XLFD_POINT_SIZE:
1774 font_props_for_sorting[i] = FONT_SIZE_INDEX; break;
1775 case XLFD_WEIGHT:
1776 font_props_for_sorting[i] = FONT_WEIGHT_INDEX; break;
1777 default:
1778 font_props_for_sorting[i] = FONT_SLANT_INDEX; break;
1780 font_props_for_sorting[i++] = FONT_FAMILY_INDEX;
1781 font_props_for_sorting[i++] = FONT_FOUNDRY_INDEX;
1782 font_props_for_sorting[i++] = FONT_ADSTYLE_INDEX;
1783 font_props_for_sorting[i++] = FONT_REGISTRY_INDEX;
1785 qsort (XVECTOR (vec)->contents, nfonts, sizeof (Lisp_Object),
1786 compare_fonts_by_sort_order);
1789 result = Qnil;
1790 for (i = nfonts - 1; i >= 0; --i)
1792 Lisp_Object font = AREF (vec, i);
1793 Lisp_Object v = Fmake_vector (make_number (8), Qnil);
1794 int point;
1795 Lisp_Object spacing;
1797 ASET (v, 0, AREF (font, FONT_FAMILY_INDEX));
1798 ASET (v, 1, FONT_WIDTH_SYMBOLIC (font));
1799 point = PIXEL_TO_POINT (XINT (AREF (font, FONT_SIZE_INDEX)) * 10,
1800 XFRAME (frame)->resy);
1801 ASET (v, 2, make_number (point));
1802 ASET (v, 3, FONT_WEIGHT_SYMBOLIC (font));
1803 ASET (v, 4, FONT_SLANT_SYMBOLIC (font));
1804 spacing = Ffont_get (font, QCspacing);
1805 ASET (v, 5, (NILP (spacing) || EQ (spacing, Qp)) ? Qnil : Qt);
1806 ASET (v, 6, Ffont_xlfd_name (font, Qnil));
1807 ASET (v, 7, AREF (font, FONT_REGISTRY_INDEX));
1809 result = Fcons (v, result);
1812 return result;
1815 DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 5, 0,
1816 doc: /* Return a list of the names of available fonts matching PATTERN.
1817 If optional arguments FACE and FRAME are specified, return only fonts
1818 the same size as FACE on FRAME.
1820 PATTERN should be a string containing a font name in the XLFD,
1821 Fontconfig, or GTK format. A font name given in the XLFD format may
1822 contain wildcard characters:
1823 the * character matches any substring, and
1824 the ? character matches any single character.
1825 PATTERN is case-insensitive.
1827 The return value is a list of strings, suitable as arguments to
1828 `set-face-font'.
1830 Fonts Emacs can't use may or may not be excluded
1831 even if they match PATTERN and FACE.
1832 The optional fourth argument MAXIMUM sets a limit on how many
1833 fonts to match. The first MAXIMUM fonts are reported.
1834 The optional fifth argument WIDTH, if specified, is a number of columns
1835 occupied by a character of a font. In that case, return only fonts
1836 the WIDTH times as wide as FACE on FRAME. */)
1837 (pattern, face, frame, maximum, width)
1838 Lisp_Object pattern, face, frame, maximum, width;
1840 struct frame *f;
1841 int size, avgwidth;
1843 check_x ();
1844 CHECK_STRING (pattern);
1846 if (! NILP (maximum))
1847 CHECK_NATNUM (maximum);
1849 if (!NILP (width))
1850 CHECK_NUMBER (width);
1852 /* We can't simply call check_x_frame because this function may be
1853 called before any frame is created. */
1854 if (NILP (frame))
1855 frame = selected_frame;
1856 f = frame_or_selected_frame (frame, 2);
1857 if (! FRAME_WINDOW_P (f))
1859 /* Perhaps we have not yet created any frame. */
1860 f = NULL;
1861 frame = Qnil;
1862 face = Qnil;
1865 /* Determine the width standard for comparison with the fonts we find. */
1867 if (NILP (face))
1868 size = 0;
1869 else
1871 /* This is of limited utility since it works with character
1872 widths. Keep it for compatibility. --gerd. */
1873 int face_id = lookup_named_face (f, face, 0);
1874 struct face *face = (face_id < 0
1875 ? NULL
1876 : FACE_FROM_ID (f, face_id));
1878 if (face && face->font)
1880 size = face->font->pixel_size;
1881 avgwidth = face->font->average_width;
1883 else
1885 size = FRAME_FONT (f)->pixel_size;
1886 avgwidth = FRAME_FONT (f)->average_width;
1888 if (!NILP (width))
1889 avgwidth *= XINT (width);
1893 Lisp_Object font_spec;
1894 Lisp_Object args[2], tail;
1896 font_spec = font_spec_from_name (pattern);
1897 if (!FONTP (font_spec))
1898 signal_error ("Invalid font name", pattern);
1900 if (size)
1902 Ffont_put (font_spec, QCsize, make_number (size));
1903 Ffont_put (font_spec, QCavgwidth, make_number (avgwidth));
1905 args[0] = Flist_fonts (font_spec, frame, maximum, font_spec);
1906 for (tail = args[0]; CONSP (tail); tail = XCDR (tail))
1907 XSETCAR (tail, Ffont_xlfd_name (XCAR (tail), Qnil));
1908 if (NILP (frame))
1909 /* We don't have to check fontsets. */
1910 return args[0];
1911 args[1] = list_fontsets (f, pattern, size);
1912 return Fnconc (2, args);
1916 #endif /* HAVE_WINDOW_SYSTEM */
1919 /***********************************************************************
1920 Lisp Faces
1921 ***********************************************************************/
1923 /* Access face attributes of face LFACE, a Lisp vector. */
1925 #define LFACE_FAMILY(LFACE) AREF ((LFACE), LFACE_FAMILY_INDEX)
1926 #define LFACE_FOUNDRY(LFACE) AREF ((LFACE), LFACE_FOUNDRY_INDEX)
1927 #define LFACE_HEIGHT(LFACE) AREF ((LFACE), LFACE_HEIGHT_INDEX)
1928 #define LFACE_WEIGHT(LFACE) AREF ((LFACE), LFACE_WEIGHT_INDEX)
1929 #define LFACE_SLANT(LFACE) AREF ((LFACE), LFACE_SLANT_INDEX)
1930 #define LFACE_UNDERLINE(LFACE) AREF ((LFACE), LFACE_UNDERLINE_INDEX)
1931 #define LFACE_INVERSE(LFACE) AREF ((LFACE), LFACE_INVERSE_INDEX)
1932 #define LFACE_FOREGROUND(LFACE) AREF ((LFACE), LFACE_FOREGROUND_INDEX)
1933 #define LFACE_BACKGROUND(LFACE) AREF ((LFACE), LFACE_BACKGROUND_INDEX)
1934 #define LFACE_STIPPLE(LFACE) AREF ((LFACE), LFACE_STIPPLE_INDEX)
1935 #define LFACE_SWIDTH(LFACE) AREF ((LFACE), LFACE_SWIDTH_INDEX)
1936 #define LFACE_OVERLINE(LFACE) AREF ((LFACE), LFACE_OVERLINE_INDEX)
1937 #define LFACE_STRIKE_THROUGH(LFACE) AREF ((LFACE), LFACE_STRIKE_THROUGH_INDEX)
1938 #define LFACE_BOX(LFACE) AREF ((LFACE), LFACE_BOX_INDEX)
1939 #define LFACE_FONT(LFACE) AREF ((LFACE), LFACE_FONT_INDEX)
1940 #define LFACE_INHERIT(LFACE) AREF ((LFACE), LFACE_INHERIT_INDEX)
1941 #define LFACE_FONTSET(LFACE) AREF ((LFACE), LFACE_FONTSET_INDEX)
1943 /* Non-zero if LFACE is a Lisp face. A Lisp face is a vector of size
1944 LFACE_VECTOR_SIZE which has the symbol `face' in slot 0. */
1946 #define LFACEP(LFACE) \
1947 (VECTORP (LFACE) \
1948 && XVECTOR (LFACE)->size == LFACE_VECTOR_SIZE \
1949 && EQ (AREF (LFACE, 0), Qface))
1952 #if GLYPH_DEBUG
1954 /* Check consistency of Lisp face attribute vector ATTRS. */
1956 static void
1957 check_lface_attrs (attrs)
1958 Lisp_Object *attrs;
1960 xassert (UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
1961 || IGNORE_DEFFACE_P (attrs[LFACE_FAMILY_INDEX])
1962 || STRINGP (attrs[LFACE_FAMILY_INDEX]));
1963 xassert (UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
1964 || IGNORE_DEFFACE_P (attrs[LFACE_FOUNDRY_INDEX])
1965 || STRINGP (attrs[LFACE_FOUNDRY_INDEX]));
1966 xassert (UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX])
1967 || IGNORE_DEFFACE_P (attrs[LFACE_SWIDTH_INDEX])
1968 || SYMBOLP (attrs[LFACE_SWIDTH_INDEX]));
1969 xassert (UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
1970 || IGNORE_DEFFACE_P (attrs[LFACE_HEIGHT_INDEX])
1971 || INTEGERP (attrs[LFACE_HEIGHT_INDEX])
1972 || FLOATP (attrs[LFACE_HEIGHT_INDEX])
1973 || FUNCTIONP (attrs[LFACE_HEIGHT_INDEX]));
1974 xassert (UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX])
1975 || IGNORE_DEFFACE_P (attrs[LFACE_WEIGHT_INDEX])
1976 || SYMBOLP (attrs[LFACE_WEIGHT_INDEX]));
1977 xassert (UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX])
1978 || IGNORE_DEFFACE_P (attrs[LFACE_SLANT_INDEX])
1979 || SYMBOLP (attrs[LFACE_SLANT_INDEX]));
1980 xassert (UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX])
1981 || IGNORE_DEFFACE_P (attrs[LFACE_UNDERLINE_INDEX])
1982 || SYMBOLP (attrs[LFACE_UNDERLINE_INDEX])
1983 || STRINGP (attrs[LFACE_UNDERLINE_INDEX]));
1984 xassert (UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
1985 || IGNORE_DEFFACE_P (attrs[LFACE_OVERLINE_INDEX])
1986 || SYMBOLP (attrs[LFACE_OVERLINE_INDEX])
1987 || STRINGP (attrs[LFACE_OVERLINE_INDEX]));
1988 xassert (UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
1989 || IGNORE_DEFFACE_P (attrs[LFACE_STRIKE_THROUGH_INDEX])
1990 || SYMBOLP (attrs[LFACE_STRIKE_THROUGH_INDEX])
1991 || STRINGP (attrs[LFACE_STRIKE_THROUGH_INDEX]));
1992 xassert (UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
1993 || IGNORE_DEFFACE_P (attrs[LFACE_BOX_INDEX])
1994 || SYMBOLP (attrs[LFACE_BOX_INDEX])
1995 || STRINGP (attrs[LFACE_BOX_INDEX])
1996 || INTEGERP (attrs[LFACE_BOX_INDEX])
1997 || CONSP (attrs[LFACE_BOX_INDEX]));
1998 xassert (UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX])
1999 || IGNORE_DEFFACE_P (attrs[LFACE_INVERSE_INDEX])
2000 || SYMBOLP (attrs[LFACE_INVERSE_INDEX]));
2001 xassert (UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX])
2002 || IGNORE_DEFFACE_P (attrs[LFACE_FOREGROUND_INDEX])
2003 || STRINGP (attrs[LFACE_FOREGROUND_INDEX]));
2004 xassert (UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX])
2005 || IGNORE_DEFFACE_P (attrs[LFACE_BACKGROUND_INDEX])
2006 || STRINGP (attrs[LFACE_BACKGROUND_INDEX]));
2007 xassert (UNSPECIFIEDP (attrs[LFACE_INHERIT_INDEX])
2008 || IGNORE_DEFFACE_P (attrs[LFACE_INHERIT_INDEX])
2009 || NILP (attrs[LFACE_INHERIT_INDEX])
2010 || SYMBOLP (attrs[LFACE_INHERIT_INDEX])
2011 || CONSP (attrs[LFACE_INHERIT_INDEX]));
2012 #ifdef HAVE_WINDOW_SYSTEM
2013 xassert (UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
2014 || IGNORE_DEFFACE_P (attrs[LFACE_STIPPLE_INDEX])
2015 || SYMBOLP (attrs[LFACE_STIPPLE_INDEX])
2016 || !NILP (Fbitmap_spec_p (attrs[LFACE_STIPPLE_INDEX])));
2017 xassert (UNSPECIFIEDP (attrs[LFACE_FONT_INDEX])
2018 || IGNORE_DEFFACE_P (attrs[LFACE_FONT_INDEX])
2019 || FONTP (attrs[LFACE_FONT_INDEX]));
2020 xassert (UNSPECIFIEDP (attrs[LFACE_FONTSET_INDEX])
2021 || STRINGP (attrs[LFACE_FONTSET_INDEX]));
2022 #endif
2026 /* Check consistency of attributes of Lisp face LFACE (a Lisp vector). */
2028 static void
2029 check_lface (lface)
2030 Lisp_Object lface;
2032 if (!NILP (lface))
2034 xassert (LFACEP (lface));
2035 check_lface_attrs (XVECTOR (lface)->contents);
2039 #else /* GLYPH_DEBUG == 0 */
2041 #define check_lface_attrs(attrs) (void) 0
2042 #define check_lface(lface) (void) 0
2044 #endif /* GLYPH_DEBUG == 0 */
2048 /* Face-merge cycle checking. */
2050 enum named_merge_point_kind
2052 NAMED_MERGE_POINT_NORMAL,
2053 NAMED_MERGE_POINT_REMAP
2056 /* A `named merge point' is simply a point during face-merging where we
2057 look up a face by name. We keep a stack of which named lookups we're
2058 currently processing so that we can easily detect cycles, using a
2059 linked- list of struct named_merge_point structures, typically
2060 allocated on the stack frame of the named lookup functions which are
2061 active (so no consing is required). */
2062 struct named_merge_point
2064 Lisp_Object face_name;
2065 enum named_merge_point_kind named_merge_point_kind;
2066 struct named_merge_point *prev;
2070 /* If a face merging cycle is detected for FACE_NAME, return 0,
2071 otherwise add NEW_NAMED_MERGE_POINT, which is initialized using
2072 FACE_NAME and NAMED_MERGE_POINT_KIND, as the head of the linked list
2073 pointed to by NAMED_MERGE_POINTS, and return 1. */
2075 static INLINE int
2076 push_named_merge_point (struct named_merge_point *new_named_merge_point,
2077 Lisp_Object face_name,
2078 enum named_merge_point_kind named_merge_point_kind,
2079 struct named_merge_point **named_merge_points)
2081 struct named_merge_point *prev;
2083 for (prev = *named_merge_points; prev; prev = prev->prev)
2084 if (EQ (face_name, prev->face_name))
2086 if (prev->named_merge_point_kind == named_merge_point_kind)
2087 /* A cycle, so fail. */
2088 return 0;
2089 else if (prev->named_merge_point_kind == NAMED_MERGE_POINT_REMAP)
2090 /* A remap `hides ' any previous normal merge points
2091 (because the remap means that it's actually different face),
2092 so as we know the current merge point must be normal, we
2093 can just assume it's OK. */
2094 break;
2097 new_named_merge_point->face_name = face_name;
2098 new_named_merge_point->named_merge_point_kind = named_merge_point_kind;
2099 new_named_merge_point->prev = *named_merge_points;
2101 *named_merge_points = new_named_merge_point;
2103 return 1;
2108 #if 0 /* Seems to be unused. */
2109 static Lisp_Object
2110 internal_resolve_face_name (nargs, args)
2111 int nargs;
2112 Lisp_Object *args;
2114 return Fget (args[0], args[1]);
2117 static Lisp_Object
2118 resolve_face_name_error (ignore)
2119 Lisp_Object ignore;
2121 return Qnil;
2123 #endif
2125 /* Resolve face name FACE_NAME. If FACE_NAME is a string, intern it
2126 to make it a symbol. If FACE_NAME is an alias for another face,
2127 return that face's name.
2129 Return default face in case of errors. */
2131 static Lisp_Object
2132 resolve_face_name (face_name, signal_p)
2133 Lisp_Object face_name;
2134 int signal_p;
2136 Lisp_Object orig_face;
2137 Lisp_Object tortoise, hare;
2139 if (STRINGP (face_name))
2140 face_name = intern (SDATA (face_name));
2142 if (NILP (face_name) || !SYMBOLP (face_name))
2143 return face_name;
2145 orig_face = face_name;
2146 tortoise = hare = face_name;
2148 while (1)
2150 face_name = hare;
2151 hare = Fget (hare, Qface_alias);
2152 if (NILP (hare) || !SYMBOLP (hare))
2153 break;
2155 face_name = hare;
2156 hare = Fget (hare, Qface_alias);
2157 if (NILP (hare) || !SYMBOLP (hare))
2158 break;
2160 tortoise = Fget (tortoise, Qface_alias);
2161 if (EQ (hare, tortoise))
2163 if (signal_p)
2164 xsignal1 (Qcircular_list, orig_face);
2165 return Qdefault;
2169 return face_name;
2173 /* Return the face definition of FACE_NAME on frame F. F null means
2174 return the definition for new frames. FACE_NAME may be a string or
2175 a symbol (apparently Emacs 20.2 allowed strings as face names in
2176 face text properties; Ediff uses that). If SIGNAL_P is non-zero,
2177 signal an error if FACE_NAME is not a valid face name. If SIGNAL_P
2178 is zero, value is nil if FACE_NAME is not a valid face name. */
2179 static INLINE Lisp_Object
2180 lface_from_face_name_no_resolve (f, face_name, signal_p)
2181 struct frame *f;
2182 Lisp_Object face_name;
2183 int signal_p;
2185 Lisp_Object lface;
2187 if (f)
2188 lface = assq_no_quit (face_name, f->face_alist);
2189 else
2190 lface = assq_no_quit (face_name, Vface_new_frame_defaults);
2192 if (CONSP (lface))
2193 lface = XCDR (lface);
2194 else if (signal_p)
2195 signal_error ("Invalid face", face_name);
2197 check_lface (lface);
2199 return lface;
2202 /* Return the face definition of FACE_NAME on frame F. F null means
2203 return the definition for new frames. FACE_NAME may be a string or
2204 a symbol (apparently Emacs 20.2 allowed strings as face names in
2205 face text properties; Ediff uses that). If FACE_NAME is an alias
2206 for another face, return that face's definition. If SIGNAL_P is
2207 non-zero, signal an error if FACE_NAME is not a valid face name.
2208 If SIGNAL_P is zero, value is nil if FACE_NAME is not a valid face
2209 name. */
2210 static INLINE Lisp_Object
2211 lface_from_face_name (f, face_name, signal_p)
2212 struct frame *f;
2213 Lisp_Object face_name;
2214 int signal_p;
2216 face_name = resolve_face_name (face_name, signal_p);
2217 return lface_from_face_name_no_resolve (f, face_name, signal_p);
2221 /* Get face attributes of face FACE_NAME from frame-local faces on
2222 frame F. Store the resulting attributes in ATTRS which must point
2223 to a vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If SIGNAL_P
2224 is non-zero, signal an error if FACE_NAME does not name a face.
2225 Otherwise, value is zero if FACE_NAME is not a face. */
2227 static INLINE int
2228 get_lface_attributes_no_remap (f, face_name, attrs, signal_p)
2229 struct frame *f;
2230 Lisp_Object face_name;
2231 Lisp_Object *attrs;
2232 int signal_p;
2234 Lisp_Object lface;
2236 lface = lface_from_face_name_no_resolve (f, face_name, signal_p);
2238 if (! NILP (lface))
2239 bcopy (XVECTOR (lface)->contents, attrs,
2240 LFACE_VECTOR_SIZE * sizeof *attrs);
2242 return !NILP (lface);
2245 /* Get face attributes of face FACE_NAME from frame-local faces on frame
2246 F. Store the resulting attributes in ATTRS which must point to a
2247 vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If FACE_NAME is an
2248 alias for another face, use that face's definition. If SIGNAL_P is
2249 non-zero, signal an error if FACE_NAME does not name a face.
2250 Otherwise, value is zero if FACE_NAME is not a face. */
2252 static INLINE int
2253 get_lface_attributes (f, face_name, attrs, signal_p, named_merge_points)
2254 struct frame *f;
2255 Lisp_Object face_name;
2256 Lisp_Object *attrs;
2257 int signal_p;
2258 struct named_merge_point *named_merge_points;
2260 Lisp_Object face_remapping;
2262 face_name = resolve_face_name (face_name, signal_p);
2264 /* See if SYMBOL has been remapped to some other face (usually this
2265 is done buffer-locally). */
2266 face_remapping = assq_no_quit (face_name, Vface_remapping_alist);
2267 if (CONSP (face_remapping))
2269 struct named_merge_point named_merge_point;
2271 if (push_named_merge_point (&named_merge_point,
2272 face_name, NAMED_MERGE_POINT_REMAP,
2273 &named_merge_points))
2275 int i;
2277 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2278 attrs[i] = Qunspecified;
2280 return merge_face_ref (f, XCDR (face_remapping), attrs,
2281 signal_p, named_merge_points);
2285 /* Default case, no remapping. */
2286 return get_lface_attributes_no_remap (f, face_name, attrs, signal_p);
2290 /* Non-zero if all attributes in face attribute vector ATTRS are
2291 specified, i.e. are non-nil. */
2293 static int
2294 lface_fully_specified_p (attrs)
2295 Lisp_Object *attrs;
2297 int i;
2299 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2300 if (i != LFACE_FONT_INDEX && i != LFACE_INHERIT_INDEX)
2301 if ((UNSPECIFIEDP (attrs[i]) || IGNORE_DEFFACE_P (attrs[i])))
2302 break;
2304 return i == LFACE_VECTOR_SIZE;
2307 #ifdef HAVE_WINDOW_SYSTEM
2309 /* Set font-related attributes of Lisp face LFACE from FONT-OBJECT.
2310 If FORCE_P is zero, set only unspecified attributes of LFACE. The
2311 exception is `font' attribute. It is set to FONT_OBJECT regardless
2312 of FORCE_P. */
2314 static int
2315 set_lface_from_font (f, lface, font_object, force_p)
2316 struct frame *f;
2317 Lisp_Object lface, font_object;
2318 int force_p;
2320 Lisp_Object val;
2321 struct font *font = XFONT_OBJECT (font_object);
2323 /* Set attributes only if unspecified, otherwise face defaults for
2324 new frames would never take effect. If the font doesn't have a
2325 specific property, set a normal value for that. */
2327 if (force_p || UNSPECIFIEDP (LFACE_FAMILY (lface)))
2329 Lisp_Object family = AREF (font_object, FONT_FAMILY_INDEX);
2331 LFACE_FAMILY (lface) = SYMBOL_NAME (family);
2334 if (force_p || UNSPECIFIEDP (LFACE_FOUNDRY (lface)))
2336 Lisp_Object foundry = AREF (font_object, FONT_FOUNDRY_INDEX);
2338 LFACE_FOUNDRY (lface) = SYMBOL_NAME (foundry);
2341 if (force_p || UNSPECIFIEDP (LFACE_HEIGHT (lface)))
2343 int pt = PIXEL_TO_POINT (font->pixel_size * 10, f->resy);
2345 xassert (pt > 0);
2346 LFACE_HEIGHT (lface) = make_number (pt);
2349 if (force_p || UNSPECIFIEDP (LFACE_WEIGHT (lface)))
2351 val = FONT_WEIGHT_FOR_FACE (font_object);
2352 LFACE_WEIGHT (lface) = ! NILP (val) ? val :Qnormal;
2354 if (force_p || UNSPECIFIEDP (LFACE_SLANT (lface)))
2356 val = FONT_SLANT_FOR_FACE (font_object);
2357 LFACE_SLANT (lface) = ! NILP (val) ? val : Qnormal;
2359 if (force_p || UNSPECIFIEDP (LFACE_SWIDTH (lface)))
2361 val = FONT_WIDTH_FOR_FACE (font_object);
2362 LFACE_SWIDTH (lface) = ! NILP (val) ? val : Qnormal;
2365 LFACE_FONT (lface) = font_object;
2366 return 1;
2369 #endif /* HAVE_WINDOW_SYSTEM */
2372 /* Merges the face height FROM with the face height TO, and returns the
2373 merged height. If FROM is an invalid height, then INVALID is
2374 returned instead. FROM and TO may be either absolute face heights or
2375 `relative' heights; the returned value is always an absolute height
2376 unless both FROM and TO are relative. */
2378 Lisp_Object
2379 merge_face_heights (from, to, invalid)
2380 Lisp_Object from, to, invalid;
2382 Lisp_Object result = invalid;
2384 if (INTEGERP (from))
2385 /* FROM is absolute, just use it as is. */
2386 result = from;
2387 else if (FLOATP (from))
2388 /* FROM is a scale, use it to adjust TO. */
2390 if (INTEGERP (to))
2391 /* relative X absolute => absolute */
2392 result = make_number ((EMACS_INT)(XFLOAT_DATA (from) * XINT (to)));
2393 else if (FLOATP (to))
2394 /* relative X relative => relative */
2395 result = make_float (XFLOAT_DATA (from) * XFLOAT_DATA (to));
2396 else if (UNSPECIFIEDP (to))
2397 result = from;
2399 else if (FUNCTIONP (from))
2400 /* FROM is a function, which use to adjust TO. */
2402 /* Call function with current height as argument.
2403 From is the new height. */
2404 Lisp_Object args[2];
2406 args[0] = from;
2407 args[1] = to;
2408 result = safe_call (2, args);
2410 /* Ensure that if TO was absolute, so is the result. */
2411 if (INTEGERP (to) && !INTEGERP (result))
2412 result = invalid;
2415 return result;
2419 /* Merge two Lisp face attribute vectors on frame F, FROM and TO, and
2420 store the resulting attributes in TO, which must be already be
2421 completely specified and contain only absolute attributes. Every
2422 specified attribute of FROM overrides the corresponding attribute of
2423 TO; relative attributes in FROM are merged with the absolute value in
2424 TO and replace it. NAMED_MERGE_POINTS is used internally to detect
2425 loops in face inheritance/remapping; it should be 0 when called from
2426 other places. */
2428 static INLINE void
2429 merge_face_vectors (f, from, to, named_merge_points)
2430 struct frame *f;
2431 Lisp_Object *from, *to;
2432 struct named_merge_point *named_merge_points;
2434 int i;
2436 /* If FROM inherits from some other faces, merge their attributes into
2437 TO before merging FROM's direct attributes. Note that an :inherit
2438 attribute of `unspecified' is the same as one of nil; we never
2439 merge :inherit attributes, so nil is more correct, but lots of
2440 other code uses `unspecified' as a generic value for face attributes. */
2441 if (!UNSPECIFIEDP (from[LFACE_INHERIT_INDEX])
2442 && !NILP (from[LFACE_INHERIT_INDEX]))
2443 merge_face_ref (f, from[LFACE_INHERIT_INDEX], to, 0, named_merge_points);
2445 i = LFACE_FONT_INDEX;
2446 if (!UNSPECIFIEDP (from[i]))
2448 if (!UNSPECIFIEDP (to[i]))
2449 to[i] = Fmerge_font_spec (from[i], to[i]);
2450 else
2451 to[i] = Fcopy_font_spec (from[i]);
2452 ASET (to[i], FONT_SIZE_INDEX, Qnil);
2455 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2456 if (!UNSPECIFIEDP (from[i]))
2458 if (i == LFACE_HEIGHT_INDEX && !INTEGERP (from[i]))
2460 to[i] = merge_face_heights (from[i], to[i], to[i]);
2461 font_clear_prop (to, FONT_SIZE_INDEX);
2463 else if (i != LFACE_FONT_INDEX)
2465 to[i] = from[i];
2466 if (i >= LFACE_FAMILY_INDEX && i <=LFACE_SLANT_INDEX)
2467 font_clear_prop (to,
2468 (i == LFACE_FAMILY_INDEX ? FONT_FAMILY_INDEX
2469 : i == LFACE_FOUNDRY_INDEX ? FONT_FOUNDRY_INDEX
2470 : i == LFACE_SWIDTH_INDEX ? FONT_WIDTH_INDEX
2471 : i == LFACE_HEIGHT_INDEX ? FONT_SIZE_INDEX
2472 : i == LFACE_WEIGHT_INDEX ? FONT_WEIGHT_INDEX
2473 : FONT_SLANT_INDEX));
2477 /* TO is always an absolute face, which should inherit from nothing.
2478 We blindly copy the :inherit attribute above and fix it up here. */
2479 to[LFACE_INHERIT_INDEX] = Qnil;
2482 /* Merge the named face FACE_NAME on frame F, into the vector of face
2483 attributes TO. NAMED_MERGE_POINTS is used to detect loops in face
2484 inheritance. Returns true if FACE_NAME is a valid face name and
2485 merging succeeded. */
2487 static int
2488 merge_named_face (f, face_name, to, named_merge_points)
2489 struct frame *f;
2490 Lisp_Object face_name;
2491 Lisp_Object *to;
2492 struct named_merge_point *named_merge_points;
2494 struct named_merge_point named_merge_point;
2496 if (push_named_merge_point (&named_merge_point,
2497 face_name, NAMED_MERGE_POINT_NORMAL,
2498 &named_merge_points))
2500 struct gcpro gcpro1;
2501 Lisp_Object from[LFACE_VECTOR_SIZE];
2502 int ok = get_lface_attributes (f, face_name, from, 0, named_merge_points);
2504 if (ok)
2506 GCPRO1 (named_merge_point.face_name);
2507 merge_face_vectors (f, from, to, named_merge_points);
2508 UNGCPRO;
2511 return ok;
2513 else
2514 return 0;
2518 /* Merge face attributes from the lisp `face reference' FACE_REF on
2519 frame F into the face attribute vector TO. If ERR_MSGS is non-zero,
2520 problems with FACE_REF cause an error message to be shown. Return
2521 non-zero if no errors occurred (regardless of the value of ERR_MSGS).
2522 NAMED_MERGE_POINTS is used to detect loops in face inheritance or
2523 list structure; it may be 0 for most callers.
2525 FACE_REF may be a single face specification or a list of such
2526 specifications. Each face specification can be:
2528 1. A symbol or string naming a Lisp face.
2530 2. A property list of the form (KEYWORD VALUE ...) where each
2531 KEYWORD is a face attribute name, and value is an appropriate value
2532 for that attribute.
2534 3. Conses or the form (FOREGROUND-COLOR . COLOR) or
2535 (BACKGROUND-COLOR . COLOR) where COLOR is a color name. This is
2536 for compatibility with 20.2.
2538 Face specifications earlier in lists take precedence over later
2539 specifications. */
2541 static int
2542 merge_face_ref (f, face_ref, to, err_msgs, named_merge_points)
2543 struct frame *f;
2544 Lisp_Object face_ref;
2545 Lisp_Object *to;
2546 int err_msgs;
2547 struct named_merge_point *named_merge_points;
2549 int ok = 1; /* Succeed without an error? */
2551 if (CONSP (face_ref))
2553 Lisp_Object first = XCAR (face_ref);
2555 if (EQ (first, Qforeground_color)
2556 || EQ (first, Qbackground_color))
2558 /* One of (FOREGROUND-COLOR . COLOR) or (BACKGROUND-COLOR
2559 . COLOR). COLOR must be a string. */
2560 Lisp_Object color_name = XCDR (face_ref);
2561 Lisp_Object color = first;
2563 if (STRINGP (color_name))
2565 if (EQ (color, Qforeground_color))
2566 to[LFACE_FOREGROUND_INDEX] = color_name;
2567 else
2568 to[LFACE_BACKGROUND_INDEX] = color_name;
2570 else
2572 if (err_msgs)
2573 add_to_log ("Invalid face color", color_name, Qnil);
2574 ok = 0;
2577 else if (SYMBOLP (first)
2578 && *SDATA (SYMBOL_NAME (first)) == ':')
2580 /* Assume this is the property list form. */
2581 while (CONSP (face_ref) && CONSP (XCDR (face_ref)))
2583 Lisp_Object keyword = XCAR (face_ref);
2584 Lisp_Object value = XCAR (XCDR (face_ref));
2585 int err = 0;
2587 /* Specifying `unspecified' is a no-op. */
2588 if (EQ (value, Qunspecified))
2590 else if (EQ (keyword, QCfamily))
2592 if (STRINGP (value))
2594 to[LFACE_FAMILY_INDEX] = value;
2595 font_clear_prop (to, FONT_FAMILY_INDEX);
2597 else
2598 err = 1;
2600 else if (EQ (keyword, QCfoundry))
2602 if (STRINGP (value))
2604 to[LFACE_FOUNDRY_INDEX] = value;
2605 font_clear_prop (to, FONT_FOUNDRY_INDEX);
2607 else
2608 err = 1;
2610 else if (EQ (keyword, QCheight))
2612 Lisp_Object new_height =
2613 merge_face_heights (value, to[LFACE_HEIGHT_INDEX], Qnil);
2615 if (! NILP (new_height))
2617 to[LFACE_HEIGHT_INDEX] = new_height;
2618 font_clear_prop (to, FONT_SIZE_INDEX);
2620 else
2621 err = 1;
2623 else if (EQ (keyword, QCweight))
2625 if (SYMBOLP (value) && FONT_WEIGHT_NAME_NUMERIC (value) >= 0)
2627 to[LFACE_WEIGHT_INDEX] = value;
2628 font_clear_prop (to, FONT_WEIGHT_INDEX);
2630 else
2631 err = 1;
2633 else if (EQ (keyword, QCslant))
2635 if (SYMBOLP (value) && FONT_SLANT_NAME_NUMERIC (value) >= 0)
2637 to[LFACE_SLANT_INDEX] = value;
2638 font_clear_prop (to, FONT_SLANT_INDEX);
2640 else
2641 err = 1;
2643 else if (EQ (keyword, QCunderline))
2645 if (EQ (value, Qt)
2646 || NILP (value)
2647 || STRINGP (value))
2648 to[LFACE_UNDERLINE_INDEX] = value;
2649 else
2650 err = 1;
2652 else if (EQ (keyword, QCoverline))
2654 if (EQ (value, Qt)
2655 || NILP (value)
2656 || STRINGP (value))
2657 to[LFACE_OVERLINE_INDEX] = value;
2658 else
2659 err = 1;
2661 else if (EQ (keyword, QCstrike_through))
2663 if (EQ (value, Qt)
2664 || NILP (value)
2665 || STRINGP (value))
2666 to[LFACE_STRIKE_THROUGH_INDEX] = value;
2667 else
2668 err = 1;
2670 else if (EQ (keyword, QCbox))
2672 if (EQ (value, Qt))
2673 value = make_number (1);
2674 if (INTEGERP (value)
2675 || STRINGP (value)
2676 || CONSP (value)
2677 || NILP (value))
2678 to[LFACE_BOX_INDEX] = value;
2679 else
2680 err = 1;
2682 else if (EQ (keyword, QCinverse_video)
2683 || EQ (keyword, QCreverse_video))
2685 if (EQ (value, Qt) || NILP (value))
2686 to[LFACE_INVERSE_INDEX] = value;
2687 else
2688 err = 1;
2690 else if (EQ (keyword, QCforeground))
2692 if (STRINGP (value))
2693 to[LFACE_FOREGROUND_INDEX] = value;
2694 else
2695 err = 1;
2697 else if (EQ (keyword, QCbackground))
2699 if (STRINGP (value))
2700 to[LFACE_BACKGROUND_INDEX] = value;
2701 else
2702 err = 1;
2704 else if (EQ (keyword, QCstipple))
2706 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
2707 Lisp_Object pixmap_p = Fbitmap_spec_p (value);
2708 if (!NILP (pixmap_p))
2709 to[LFACE_STIPPLE_INDEX] = value;
2710 else
2711 err = 1;
2712 #endif
2714 else if (EQ (keyword, QCwidth))
2716 if (SYMBOLP (value) && FONT_WIDTH_NAME_NUMERIC (value) >= 0)
2718 to[LFACE_SWIDTH_INDEX] = value;
2719 font_clear_prop (to, FONT_WIDTH_INDEX);
2721 else
2722 err = 1;
2724 else if (EQ (keyword, QCinherit))
2726 /* This is not really very useful; it's just like a
2727 normal face reference. */
2728 if (! merge_face_ref (f, value, to,
2729 err_msgs, named_merge_points))
2730 err = 1;
2732 else
2733 err = 1;
2735 if (err)
2737 add_to_log ("Invalid face attribute %S %S", keyword, value);
2738 ok = 0;
2741 face_ref = XCDR (XCDR (face_ref));
2744 else
2746 /* This is a list of face refs. Those at the beginning of the
2747 list take precedence over what follows, so we have to merge
2748 from the end backwards. */
2749 Lisp_Object next = XCDR (face_ref);
2751 if (! NILP (next))
2752 ok = merge_face_ref (f, next, to, err_msgs, named_merge_points);
2754 if (! merge_face_ref (f, first, to, err_msgs, named_merge_points))
2755 ok = 0;
2758 else
2760 /* FACE_REF ought to be a face name. */
2761 ok = merge_named_face (f, face_ref, to, named_merge_points);
2762 if (!ok && err_msgs)
2763 add_to_log ("Invalid face reference: %s", face_ref, Qnil);
2766 return ok;
2770 DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face,
2771 Sinternal_make_lisp_face, 1, 2, 0,
2772 doc: /* Make FACE, a symbol, a Lisp face with all attributes nil.
2773 If FACE was not known as a face before, create a new one.
2774 If optional argument FRAME is specified, make a frame-local face
2775 for that frame. Otherwise operate on the global face definition.
2776 Value is a vector of face attributes. */)
2777 (face, frame)
2778 Lisp_Object face, frame;
2780 Lisp_Object global_lface, lface;
2781 struct frame *f;
2782 int i;
2784 CHECK_SYMBOL (face);
2785 global_lface = lface_from_face_name (NULL, face, 0);
2787 if (!NILP (frame))
2789 CHECK_LIVE_FRAME (frame);
2790 f = XFRAME (frame);
2791 lface = lface_from_face_name (f, face, 0);
2793 else
2794 f = NULL, lface = Qnil;
2796 /* Add a global definition if there is none. */
2797 if (NILP (global_lface))
2799 global_lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
2800 Qunspecified);
2801 ASET (global_lface, 0, Qface);
2802 Vface_new_frame_defaults = Fcons (Fcons (face, global_lface),
2803 Vface_new_frame_defaults);
2805 /* Assign the new Lisp face a unique ID. The mapping from Lisp
2806 face id to Lisp face is given by the vector lface_id_to_name.
2807 The mapping from Lisp face to Lisp face id is given by the
2808 property `face' of the Lisp face name. */
2809 if (next_lface_id == lface_id_to_name_size)
2811 int new_size = max (50, 2 * lface_id_to_name_size);
2812 int sz = new_size * sizeof *lface_id_to_name;
2813 lface_id_to_name = (Lisp_Object *) xrealloc (lface_id_to_name, sz);
2814 lface_id_to_name_size = new_size;
2817 lface_id_to_name[next_lface_id] = face;
2818 Fput (face, Qface, make_number (next_lface_id));
2819 ++next_lface_id;
2821 else if (f == NULL)
2822 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2823 ASET (global_lface, i, Qunspecified);
2825 /* Add a frame-local definition. */
2826 if (f)
2828 if (NILP (lface))
2830 lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
2831 Qunspecified);
2832 ASET (lface, 0, Qface);
2833 f->face_alist = Fcons (Fcons (face, lface), f->face_alist);
2835 else
2836 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2837 ASET (lface, i, Qunspecified);
2839 else
2840 lface = global_lface;
2842 /* Changing a named face means that all realized faces depending on
2843 that face are invalid. Since we cannot tell which realized faces
2844 depend on the face, make sure they are all removed. This is done
2845 by incrementing face_change_count. The next call to
2846 init_iterator will then free realized faces. */
2847 if (NILP (Fget (face, Qface_no_inherit)))
2849 ++face_change_count;
2850 ++windows_or_buffers_changed;
2853 xassert (LFACEP (lface));
2854 check_lface (lface);
2855 return lface;
2859 DEFUN ("internal-lisp-face-p", Finternal_lisp_face_p,
2860 Sinternal_lisp_face_p, 1, 2, 0,
2861 doc: /* Return non-nil if FACE names a face.
2862 If optional second argument FRAME is non-nil, check for the
2863 existence of a frame-local face with name FACE on that frame.
2864 Otherwise check for the existence of a global face. */)
2865 (face, frame)
2866 Lisp_Object face, frame;
2868 Lisp_Object lface;
2870 face = resolve_face_name (face, 1);
2872 if (!NILP (frame))
2874 CHECK_LIVE_FRAME (frame);
2875 lface = lface_from_face_name (XFRAME (frame), face, 0);
2877 else
2878 lface = lface_from_face_name (NULL, face, 0);
2880 return lface;
2884 DEFUN ("internal-copy-lisp-face", Finternal_copy_lisp_face,
2885 Sinternal_copy_lisp_face, 4, 4, 0,
2886 doc: /* Copy face FROM to TO.
2887 If FRAME is t, copy the global face definition of FROM.
2888 Otherwise, copy the frame-local definition of FROM on FRAME.
2889 If NEW-FRAME is a frame, copy that data into the frame-local
2890 definition of TO on NEW-FRAME. If NEW-FRAME is nil,
2891 FRAME controls where the data is copied to.
2893 The value is TO. */)
2894 (from, to, frame, new_frame)
2895 Lisp_Object from, to, frame, new_frame;
2897 Lisp_Object lface, copy;
2899 CHECK_SYMBOL (from);
2900 CHECK_SYMBOL (to);
2902 if (EQ (frame, Qt))
2904 /* Copy global definition of FROM. We don't make copies of
2905 strings etc. because 20.2 didn't do it either. */
2906 lface = lface_from_face_name (NULL, from, 1);
2907 copy = Finternal_make_lisp_face (to, Qnil);
2909 else
2911 /* Copy frame-local definition of FROM. */
2912 if (NILP (new_frame))
2913 new_frame = frame;
2914 CHECK_LIVE_FRAME (frame);
2915 CHECK_LIVE_FRAME (new_frame);
2916 lface = lface_from_face_name (XFRAME (frame), from, 1);
2917 copy = Finternal_make_lisp_face (to, new_frame);
2920 bcopy (XVECTOR (lface)->contents, XVECTOR (copy)->contents,
2921 LFACE_VECTOR_SIZE * sizeof (Lisp_Object));
2923 /* Changing a named face means that all realized faces depending on
2924 that face are invalid. Since we cannot tell which realized faces
2925 depend on the face, make sure they are all removed. This is done
2926 by incrementing face_change_count. The next call to
2927 init_iterator will then free realized faces. */
2928 if (NILP (Fget (to, Qface_no_inherit)))
2930 ++face_change_count;
2931 ++windows_or_buffers_changed;
2934 return to;
2938 DEFUN ("internal-set-lisp-face-attribute", Finternal_set_lisp_face_attribute,
2939 Sinternal_set_lisp_face_attribute, 3, 4, 0,
2940 doc: /* Set attribute ATTR of FACE to VALUE.
2941 FRAME being a frame means change the face on that frame.
2942 FRAME nil means change the face of the selected frame.
2943 FRAME t means change the default for new frames.
2944 FRAME 0 means change the face on all frames, and change the default
2945 for new frames. */)
2946 (face, attr, value, frame)
2947 Lisp_Object face, attr, value, frame;
2949 Lisp_Object lface;
2950 Lisp_Object old_value = Qnil;
2951 /* Set one of enum font_property_index (> 0) if ATTR is one of
2952 font-related attributes other than QCfont and QCfontset. */
2953 enum font_property_index prop_index = 0;
2955 CHECK_SYMBOL (face);
2956 CHECK_SYMBOL (attr);
2958 face = resolve_face_name (face, 1);
2960 /* If FRAME is 0, change face on all frames, and change the
2961 default for new frames. */
2962 if (INTEGERP (frame) && XINT (frame) == 0)
2964 Lisp_Object tail;
2965 Finternal_set_lisp_face_attribute (face, attr, value, Qt);
2966 FOR_EACH_FRAME (tail, frame)
2967 Finternal_set_lisp_face_attribute (face, attr, value, frame);
2968 return face;
2971 /* Set lface to the Lisp attribute vector of FACE. */
2972 if (EQ (frame, Qt))
2974 lface = lface_from_face_name (NULL, face, 1);
2976 /* When updating face-new-frame-defaults, we put :ignore-defface
2977 where the caller wants `unspecified'. This forces the frame
2978 defaults to ignore the defface value. Otherwise, the defface
2979 will take effect, which is generally not what is intended.
2980 The value of that attribute will be inherited from some other
2981 face during face merging. See internal_merge_in_global_face. */
2982 if (UNSPECIFIEDP (value))
2983 value = Qignore_defface;
2985 else
2987 if (NILP (frame))
2988 frame = selected_frame;
2990 CHECK_LIVE_FRAME (frame);
2991 lface = lface_from_face_name (XFRAME (frame), face, 0);
2993 /* If a frame-local face doesn't exist yet, create one. */
2994 if (NILP (lface))
2995 lface = Finternal_make_lisp_face (face, frame);
2998 if (EQ (attr, QCfamily))
3000 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3002 CHECK_STRING (value);
3003 if (SCHARS (value) == 0)
3004 signal_error ("Invalid face family", value);
3006 old_value = LFACE_FAMILY (lface);
3007 LFACE_FAMILY (lface) = value;
3008 prop_index = FONT_FAMILY_INDEX;
3010 else if (EQ (attr, QCfoundry))
3012 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3014 CHECK_STRING (value);
3015 if (SCHARS (value) == 0)
3016 signal_error ("Invalid face foundry", value);
3018 old_value = LFACE_FOUNDRY (lface);
3019 LFACE_FOUNDRY (lface) = value;
3020 prop_index = FONT_FOUNDRY_INDEX;
3022 else if (EQ (attr, QCheight))
3024 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3026 if (EQ (face, Qdefault))
3028 /* The default face must have an absolute size. */
3029 if (!INTEGERP (value) || XINT (value) <= 0)
3030 signal_error ("Invalid default face height", value);
3032 else
3034 /* For non-default faces, do a test merge with a random
3035 height to see if VALUE's ok. */
3036 Lisp_Object test = merge_face_heights (value,
3037 make_number (10),
3038 Qnil);
3039 if (!INTEGERP (test) || XINT (test) <= 0)
3040 signal_error ("Invalid face height", value);
3044 old_value = LFACE_HEIGHT (lface);
3045 LFACE_HEIGHT (lface) = value;
3046 prop_index = FONT_SIZE_INDEX;
3048 else if (EQ (attr, QCweight))
3050 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3052 CHECK_SYMBOL (value);
3053 if (FONT_WEIGHT_NAME_NUMERIC (value) < 0)
3054 signal_error ("Invalid face weight", value);
3056 old_value = LFACE_WEIGHT (lface);
3057 LFACE_WEIGHT (lface) = value;
3058 prop_index = FONT_WEIGHT_INDEX;
3060 else if (EQ (attr, QCslant))
3062 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3064 CHECK_SYMBOL (value);
3065 if (FONT_SLANT_NAME_NUMERIC (value) < 0)
3066 signal_error ("Invalid face slant", value);
3068 old_value = LFACE_SLANT (lface);
3069 LFACE_SLANT (lface) = value;
3070 prop_index = FONT_SLANT_INDEX;
3072 else if (EQ (attr, QCunderline))
3074 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3075 if ((SYMBOLP (value)
3076 && !EQ (value, Qt)
3077 && !EQ (value, Qnil))
3078 /* Underline color. */
3079 || (STRINGP (value)
3080 && SCHARS (value) == 0))
3081 signal_error ("Invalid face underline", value);
3083 old_value = LFACE_UNDERLINE (lface);
3084 LFACE_UNDERLINE (lface) = value;
3086 else if (EQ (attr, QCoverline))
3088 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3089 if ((SYMBOLP (value)
3090 && !EQ (value, Qt)
3091 && !EQ (value, Qnil))
3092 /* Overline color. */
3093 || (STRINGP (value)
3094 && SCHARS (value) == 0))
3095 signal_error ("Invalid face overline", value);
3097 old_value = LFACE_OVERLINE (lface);
3098 LFACE_OVERLINE (lface) = value;
3100 else if (EQ (attr, QCstrike_through))
3102 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3103 if ((SYMBOLP (value)
3104 && !EQ (value, Qt)
3105 && !EQ (value, Qnil))
3106 /* Strike-through color. */
3107 || (STRINGP (value)
3108 && SCHARS (value) == 0))
3109 signal_error ("Invalid face strike-through", value);
3111 old_value = LFACE_STRIKE_THROUGH (lface);
3112 LFACE_STRIKE_THROUGH (lface) = value;
3114 else if (EQ (attr, QCbox))
3116 int valid_p;
3118 /* Allow t meaning a simple box of width 1 in foreground color
3119 of the face. */
3120 if (EQ (value, Qt))
3121 value = make_number (1);
3123 if (UNSPECIFIEDP (value) || IGNORE_DEFFACE_P (value))
3124 valid_p = 1;
3125 else if (NILP (value))
3126 valid_p = 1;
3127 else if (INTEGERP (value))
3128 valid_p = XINT (value) != 0;
3129 else if (STRINGP (value))
3130 valid_p = SCHARS (value) > 0;
3131 else if (CONSP (value))
3133 Lisp_Object tem;
3135 tem = value;
3136 while (CONSP (tem))
3138 Lisp_Object k, v;
3140 k = XCAR (tem);
3141 tem = XCDR (tem);
3142 if (!CONSP (tem))
3143 break;
3144 v = XCAR (tem);
3145 tem = XCDR (tem);
3147 if (EQ (k, QCline_width))
3149 if (!INTEGERP (v) || XINT (v) == 0)
3150 break;
3152 else if (EQ (k, QCcolor))
3154 if (!NILP (v) && (!STRINGP (v) || SCHARS (v) == 0))
3155 break;
3157 else if (EQ (k, QCstyle))
3159 if (!EQ (v, Qpressed_button) && !EQ (v, Qreleased_button))
3160 break;
3162 else
3163 break;
3166 valid_p = NILP (tem);
3168 else
3169 valid_p = 0;
3171 if (!valid_p)
3172 signal_error ("Invalid face box", value);
3174 old_value = LFACE_BOX (lface);
3175 LFACE_BOX (lface) = value;
3177 else if (EQ (attr, QCinverse_video)
3178 || EQ (attr, QCreverse_video))
3180 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3182 CHECK_SYMBOL (value);
3183 if (!EQ (value, Qt) && !NILP (value))
3184 signal_error ("Invalid inverse-video face attribute value", value);
3186 old_value = LFACE_INVERSE (lface);
3187 LFACE_INVERSE (lface) = value;
3189 else if (EQ (attr, QCforeground))
3191 /* Compatibility with 20.x. */
3192 if (NILP (value))
3193 value = Qunspecified;
3194 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3196 /* Don't check for valid color names here because it depends
3197 on the frame (display) whether the color will be valid
3198 when the face is realized. */
3199 CHECK_STRING (value);
3200 if (SCHARS (value) == 0)
3201 signal_error ("Empty foreground color value", value);
3203 old_value = LFACE_FOREGROUND (lface);
3204 LFACE_FOREGROUND (lface) = value;
3206 else if (EQ (attr, QCbackground))
3208 /* Compatibility with 20.x. */
3209 if (NILP (value))
3210 value = Qunspecified;
3211 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3213 /* Don't check for valid color names here because it depends
3214 on the frame (display) whether the color will be valid
3215 when the face is realized. */
3216 CHECK_STRING (value);
3217 if (SCHARS (value) == 0)
3218 signal_error ("Empty background color value", value);
3220 old_value = LFACE_BACKGROUND (lface);
3221 LFACE_BACKGROUND (lface) = value;
3223 else if (EQ (attr, QCstipple))
3225 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
3226 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value)
3227 && !NILP (value)
3228 && NILP (Fbitmap_spec_p (value)))
3229 signal_error ("Invalid stipple attribute", value);
3230 old_value = LFACE_STIPPLE (lface);
3231 LFACE_STIPPLE (lface) = value;
3232 #endif /* HAVE_X_WINDOWS || HAVE_NS */
3234 else if (EQ (attr, QCwidth))
3236 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3238 CHECK_SYMBOL (value);
3239 if (FONT_WIDTH_NAME_NUMERIC (value) < 0)
3240 signal_error ("Invalid face width", value);
3242 old_value = LFACE_SWIDTH (lface);
3243 LFACE_SWIDTH (lface) = value;
3244 prop_index = FONT_WIDTH_INDEX;
3246 else if (EQ (attr, QCfont))
3248 #ifdef HAVE_WINDOW_SYSTEM
3249 if (EQ (frame, Qt) || FRAME_WINDOW_P (XFRAME (frame)))
3251 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3253 FRAME_PTR f;
3255 old_value = LFACE_FONT (lface);
3256 if (! FONTP (value))
3258 if (STRINGP (value))
3260 Lisp_Object name = value;
3261 int fontset = fs_query_fontset (name, 0);
3263 if (fontset >= 0)
3264 name = fontset_ascii (fontset);
3265 value = font_spec_from_name (name);
3266 if (!FONTP (value))
3267 signal_error ("Invalid font name", name);
3269 else
3270 signal_error ("Invalid font or font-spec", value);
3272 if (EQ (frame, Qt))
3273 f = XFRAME (selected_frame);
3274 else
3275 f = XFRAME (frame);
3276 if (! FONT_OBJECT_P (value))
3278 Lisp_Object *attrs = XVECTOR (lface)->contents;
3279 Lisp_Object font_object;
3281 font_object = font_load_for_lface (f, attrs, value);
3282 if (NILP (font_object))
3283 signal_error ("Font not available", value);
3284 value = font_object;
3286 set_lface_from_font (f, lface, value, 1);
3288 else
3289 LFACE_FONT (lface) = value;
3291 #endif /* HAVE_WINDOW_SYSTEM */
3293 else if (EQ (attr, QCfontset))
3295 #ifdef HAVE_WINDOW_SYSTEM
3296 if (EQ (frame, Qt) || FRAME_WINDOW_P (XFRAME (frame)))
3298 Lisp_Object tmp;
3300 old_value = LFACE_FONTSET (lface);
3301 tmp = Fquery_fontset (value, Qnil);
3302 if (NILP (tmp))
3303 signal_error ("Invalid fontset name", value);
3304 LFACE_FONTSET (lface) = value = tmp;
3306 #endif /* HAVE_WINDOW_SYSTEM */
3308 else if (EQ (attr, QCinherit))
3310 Lisp_Object tail;
3311 if (SYMBOLP (value))
3312 tail = Qnil;
3313 else
3314 for (tail = value; CONSP (tail); tail = XCDR (tail))
3315 if (!SYMBOLP (XCAR (tail)))
3316 break;
3317 if (NILP (tail))
3318 LFACE_INHERIT (lface) = value;
3319 else
3320 signal_error ("Invalid face inheritance", value);
3322 else if (EQ (attr, QCbold))
3324 old_value = LFACE_WEIGHT (lface);
3325 LFACE_WEIGHT (lface) = NILP (value) ? Qnormal : Qbold;
3326 prop_index = FONT_WEIGHT_INDEX;
3328 else if (EQ (attr, QCitalic))
3330 attr = QCslant;
3331 old_value = LFACE_SLANT (lface);
3332 LFACE_SLANT (lface) = NILP (value) ? Qnormal : Qitalic;
3333 prop_index = FONT_SLANT_INDEX;
3335 else
3336 signal_error ("Invalid face attribute name", attr);
3338 if (prop_index)
3340 /* If a font-related attribute other than QCfont and QCfontset
3341 is specified, and if the original QCfont attribute has a font
3342 (font-spec or font-object), set the corresponding property in
3343 the font to nil so that the font selector doesn't think that
3344 the attribute is mandatory. Also, clear the average
3345 width. */
3346 font_clear_prop (XVECTOR (lface)->contents, prop_index);
3349 /* Changing a named face means that all realized faces depending on
3350 that face are invalid. Since we cannot tell which realized faces
3351 depend on the face, make sure they are all removed. This is done
3352 by incrementing face_change_count. The next call to
3353 init_iterator will then free realized faces. */
3354 if (!EQ (frame, Qt)
3355 && NILP (Fget (face, Qface_no_inherit))
3356 && NILP (Fequal (old_value, value)))
3358 ++face_change_count;
3359 ++windows_or_buffers_changed;
3362 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value)
3363 && NILP (Fequal (old_value, value)))
3365 Lisp_Object param;
3367 param = Qnil;
3369 if (EQ (face, Qdefault))
3371 #ifdef HAVE_WINDOW_SYSTEM
3372 /* Changed font-related attributes of the `default' face are
3373 reflected in changed `font' frame parameters. */
3374 if (FRAMEP (frame)
3375 && (prop_index || EQ (attr, QCfont))
3376 && lface_fully_specified_p (XVECTOR (lface)->contents))
3377 set_font_frame_param (frame, lface);
3378 else
3379 #endif /* HAVE_WINDOW_SYSTEM */
3381 if (EQ (attr, QCforeground))
3382 param = Qforeground_color;
3383 else if (EQ (attr, QCbackground))
3384 param = Qbackground_color;
3386 #ifdef HAVE_WINDOW_SYSTEM
3387 #ifndef WINDOWSNT
3388 else if (EQ (face, Qscroll_bar))
3390 /* Changing the colors of `scroll-bar' sets frame parameters
3391 `scroll-bar-foreground' and `scroll-bar-background'. */
3392 if (EQ (attr, QCforeground))
3393 param = Qscroll_bar_foreground;
3394 else if (EQ (attr, QCbackground))
3395 param = Qscroll_bar_background;
3397 #endif /* not WINDOWSNT */
3398 else if (EQ (face, Qborder))
3400 /* Changing background color of `border' sets frame parameter
3401 `border-color'. */
3402 if (EQ (attr, QCbackground))
3403 param = Qborder_color;
3405 else if (EQ (face, Qcursor))
3407 /* Changing background color of `cursor' sets frame parameter
3408 `cursor-color'. */
3409 if (EQ (attr, QCbackground))
3410 param = Qcursor_color;
3412 else if (EQ (face, Qmouse))
3414 /* Changing background color of `mouse' sets frame parameter
3415 `mouse-color'. */
3416 if (EQ (attr, QCbackground))
3417 param = Qmouse_color;
3419 #endif /* HAVE_WINDOW_SYSTEM */
3420 else if (EQ (face, Qmenu))
3422 /* Indicate that we have to update the menu bar when
3423 realizing faces on FRAME. FRAME t change the
3424 default for new frames. We do this by setting
3425 setting the flag in new face caches */
3426 if (FRAMEP (frame))
3428 struct frame *f = XFRAME (frame);
3429 if (FRAME_FACE_CACHE (f) == NULL)
3430 FRAME_FACE_CACHE (f) = make_face_cache (f);
3431 FRAME_FACE_CACHE (f)->menu_face_changed_p = 1;
3433 else
3434 menu_face_changed_default = 1;
3437 if (!NILP (param))
3439 if (EQ (frame, Qt))
3440 /* Update `default-frame-alist', which is used for new frames. */
3442 store_in_alist (&Vdefault_frame_alist, param, value);
3444 else
3445 /* Update the current frame's parameters. */
3447 Lisp_Object cons;
3448 cons = XCAR (Vparam_value_alist);
3449 XSETCAR (cons, param);
3450 XSETCDR (cons, value);
3451 Fmodify_frame_parameters (frame, Vparam_value_alist);
3456 return face;
3460 #ifdef HAVE_WINDOW_SYSTEM
3462 /* Set the `font' frame parameter of FRAME determined from the
3463 font-object set in `default' face attributes LFACE. */
3465 static void
3466 set_font_frame_param (frame, lface)
3467 Lisp_Object frame, lface;
3469 struct frame *f = XFRAME (frame);
3470 Lisp_Object font;
3472 if (FRAME_WINDOW_P (f)
3473 /* Don't do anything if the font is `unspecified'. This can
3474 happen during frame creation. */
3475 && (font = LFACE_FONT (lface),
3476 ! UNSPECIFIEDP (font)))
3478 if (FONT_SPEC_P (font))
3480 font = font_load_for_lface (f, XVECTOR (lface)->contents, font);
3481 if (NILP (font))
3482 return;
3483 LFACE_FONT (lface) = font;
3485 f->default_face_done_p = 0;
3486 Fmodify_frame_parameters (frame, Fcons (Fcons (Qfont, font), Qnil));
3491 /* Update the corresponding face when frame parameter PARAM on frame F
3492 has been assigned the value NEW_VALUE. */
3494 void
3495 update_face_from_frame_parameter (f, param, new_value)
3496 struct frame *f;
3497 Lisp_Object param, new_value;
3499 Lisp_Object face = Qnil;
3500 Lisp_Object lface;
3502 /* If there are no faces yet, give up. This is the case when called
3503 from Fx_create_frame, and we do the necessary things later in
3504 face-set-after-frame-defaults. */
3505 if (NILP (f->face_alist))
3506 return;
3508 if (EQ (param, Qforeground_color))
3510 face = Qdefault;
3511 lface = lface_from_face_name (f, face, 1);
3512 LFACE_FOREGROUND (lface) = (STRINGP (new_value)
3513 ? new_value : Qunspecified);
3514 realize_basic_faces (f);
3516 else if (EQ (param, Qbackground_color))
3518 Lisp_Object frame;
3520 /* Changing the background color might change the background
3521 mode, so that we have to load new defface specs.
3522 Call frame-update-face-colors to do that. */
3523 XSETFRAME (frame, f);
3524 call1 (Qframe_set_background_mode, frame);
3526 face = Qdefault;
3527 lface = lface_from_face_name (f, face, 1);
3528 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3529 ? new_value : Qunspecified);
3530 realize_basic_faces (f);
3532 else if (EQ (param, Qborder_color))
3534 face = Qborder;
3535 lface = lface_from_face_name (f, face, 1);
3536 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3537 ? new_value : Qunspecified);
3539 else if (EQ (param, Qcursor_color))
3541 face = Qcursor;
3542 lface = lface_from_face_name (f, face, 1);
3543 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3544 ? new_value : Qunspecified);
3546 else if (EQ (param, Qmouse_color))
3548 face = Qmouse;
3549 lface = lface_from_face_name (f, face, 1);
3550 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3551 ? new_value : Qunspecified);
3554 /* Changing a named face means that all realized faces depending on
3555 that face are invalid. Since we cannot tell which realized faces
3556 depend on the face, make sure they are all removed. This is done
3557 by incrementing face_change_count. The next call to
3558 init_iterator will then free realized faces. */
3559 if (!NILP (face)
3560 && NILP (Fget (face, Qface_no_inherit)))
3562 ++face_change_count;
3563 ++windows_or_buffers_changed;
3568 /* Get the value of X resource RESOURCE, class CLASS for the display
3569 of frame FRAME. This is here because ordinary `x-get-resource'
3570 doesn't take a frame argument. */
3572 DEFUN ("internal-face-x-get-resource", Finternal_face_x_get_resource,
3573 Sinternal_face_x_get_resource, 3, 3, 0, doc: /* */)
3574 (resource, class, frame)
3575 Lisp_Object resource, class, frame;
3577 Lisp_Object value = Qnil;
3578 CHECK_STRING (resource);
3579 CHECK_STRING (class);
3580 CHECK_LIVE_FRAME (frame);
3581 BLOCK_INPUT;
3582 value = display_x_get_resource (FRAME_X_DISPLAY_INFO (XFRAME (frame)),
3583 resource, class, Qnil, Qnil);
3584 UNBLOCK_INPUT;
3585 return value;
3589 /* Return resource string VALUE as a boolean value, i.e. nil, or t.
3590 If VALUE is "on" or "true", return t. If VALUE is "off" or
3591 "false", return nil. Otherwise, if SIGNAL_P is non-zero, signal an
3592 error; if SIGNAL_P is zero, return 0. */
3594 static Lisp_Object
3595 face_boolean_x_resource_value (value, signal_p)
3596 Lisp_Object value;
3597 int signal_p;
3599 Lisp_Object result = make_number (0);
3601 xassert (STRINGP (value));
3603 if (xstrcasecmp (SDATA (value), "on") == 0
3604 || xstrcasecmp (SDATA (value), "true") == 0)
3605 result = Qt;
3606 else if (xstrcasecmp (SDATA (value), "off") == 0
3607 || xstrcasecmp (SDATA (value), "false") == 0)
3608 result = Qnil;
3609 else if (xstrcasecmp (SDATA (value), "unspecified") == 0)
3610 result = Qunspecified;
3611 else if (signal_p)
3612 signal_error ("Invalid face attribute value from X resource", value);
3614 return result;
3618 DEFUN ("internal-set-lisp-face-attribute-from-resource",
3619 Finternal_set_lisp_face_attribute_from_resource,
3620 Sinternal_set_lisp_face_attribute_from_resource,
3621 3, 4, 0, doc: /* */)
3622 (face, attr, value, frame)
3623 Lisp_Object face, attr, value, frame;
3625 CHECK_SYMBOL (face);
3626 CHECK_SYMBOL (attr);
3627 CHECK_STRING (value);
3629 if (xstrcasecmp (SDATA (value), "unspecified") == 0)
3630 value = Qunspecified;
3631 else if (EQ (attr, QCheight))
3633 value = Fstring_to_number (value, make_number (10));
3634 if (XINT (value) <= 0)
3635 signal_error ("Invalid face height from X resource", value);
3637 else if (EQ (attr, QCbold) || EQ (attr, QCitalic))
3638 value = face_boolean_x_resource_value (value, 1);
3639 else if (EQ (attr, QCweight) || EQ (attr, QCslant) || EQ (attr, QCwidth))
3640 value = intern (SDATA (value));
3641 else if (EQ (attr, QCreverse_video) || EQ (attr, QCinverse_video))
3642 value = face_boolean_x_resource_value (value, 1);
3643 else if (EQ (attr, QCunderline)
3644 || EQ (attr, QCoverline)
3645 || EQ (attr, QCstrike_through))
3647 Lisp_Object boolean_value;
3649 /* If the result of face_boolean_x_resource_value is t or nil,
3650 VALUE does NOT specify a color. */
3651 boolean_value = face_boolean_x_resource_value (value, 0);
3652 if (SYMBOLP (boolean_value))
3653 value = boolean_value;
3655 else if (EQ (attr, QCbox) || EQ (attr, QCinherit))
3656 value = Fcar (Fread_from_string (value, Qnil, Qnil));
3658 return Finternal_set_lisp_face_attribute (face, attr, value, frame);
3661 #endif /* HAVE_WINDOW_SYSTEM */
3664 /***********************************************************************
3665 Menu face
3666 ***********************************************************************/
3668 #if defined HAVE_X_WINDOWS && defined USE_X_TOOLKIT
3670 /* Make menus on frame F appear as specified by the `menu' face. */
3672 static void
3673 x_update_menu_appearance (f)
3674 struct frame *f;
3676 struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
3677 XrmDatabase rdb;
3679 if (dpyinfo
3680 && (rdb = XrmGetDatabase (FRAME_X_DISPLAY (f)),
3681 rdb != NULL))
3683 char line[512];
3684 Lisp_Object lface = lface_from_face_name (f, Qmenu, 1);
3685 struct face *face = FACE_FROM_ID (f, MENU_FACE_ID);
3686 const char *myname = SDATA (Vx_resource_name);
3687 int changed_p = 0;
3688 #ifdef USE_MOTIF
3689 const char *popup_path = "popup_menu";
3690 #else
3691 const char *popup_path = "menu.popup";
3692 #endif
3694 if (STRINGP (LFACE_FOREGROUND (lface)))
3696 sprintf (line, "%s.%s*foreground: %s",
3697 myname, popup_path,
3698 SDATA (LFACE_FOREGROUND (lface)));
3699 XrmPutLineResource (&rdb, line);
3700 sprintf (line, "%s.pane.menubar*foreground: %s",
3701 myname, SDATA (LFACE_FOREGROUND (lface)));
3702 XrmPutLineResource (&rdb, line);
3703 changed_p = 1;
3706 if (STRINGP (LFACE_BACKGROUND (lface)))
3708 sprintf (line, "%s.%s*background: %s",
3709 myname, popup_path,
3710 SDATA (LFACE_BACKGROUND (lface)));
3711 XrmPutLineResource (&rdb, line);
3712 sprintf (line, "%s.pane.menubar*background: %s",
3713 myname, SDATA (LFACE_BACKGROUND (lface)));
3714 XrmPutLineResource (&rdb, line);
3715 changed_p = 1;
3718 if (face->font
3719 /* On Solaris 5.8, it's been reported that the `menu' face
3720 can be unspecified here, during startup. Why this
3721 happens remains unknown. -- cyd */
3722 && FONTP (LFACE_FONT (lface))
3723 && (!UNSPECIFIEDP (LFACE_FAMILY (lface))
3724 || !UNSPECIFIEDP (LFACE_FOUNDRY (lface))
3725 || !UNSPECIFIEDP (LFACE_SWIDTH (lface))
3726 || !UNSPECIFIEDP (LFACE_WEIGHT (lface))
3727 || !UNSPECIFIEDP (LFACE_SLANT (lface))
3728 || !UNSPECIFIEDP (LFACE_HEIGHT (lface))))
3730 Lisp_Object xlfd = Ffont_xlfd_name (LFACE_FONT (lface), Qnil);
3731 #ifdef USE_MOTIF
3732 const char *suffix = "List";
3733 Bool motif = True;
3734 #else
3735 #if defined HAVE_X_I18N
3737 const char *suffix = "Set";
3738 #else
3739 const char *suffix = "";
3740 #endif
3741 Bool motif = False;
3742 #endif
3744 if (! NILP (xlfd))
3746 #if defined HAVE_X_I18N
3747 extern char *xic_create_fontsetname
3748 P_ ((char *base_fontname, Bool motif));
3749 char *fontsetname = xic_create_fontsetname (SDATA (xlfd), motif);
3750 #else
3751 char *fontsetname = (char *) SDATA (xlfd);
3752 #endif
3753 sprintf (line, "%s.pane.menubar*font%s: %s",
3754 myname, suffix, fontsetname);
3755 XrmPutLineResource (&rdb, line);
3756 sprintf (line, "%s.%s*font%s: %s",
3757 myname, popup_path, suffix, fontsetname);
3758 XrmPutLineResource (&rdb, line);
3759 changed_p = 1;
3760 if (fontsetname != (char *) SDATA (xlfd))
3761 xfree (fontsetname);
3765 if (changed_p && f->output_data.x->menubar_widget)
3766 free_frame_menubar (f);
3770 #endif /* HAVE_X_WINDOWS && USE_X_TOOLKIT */
3773 DEFUN ("face-attribute-relative-p", Fface_attribute_relative_p,
3774 Sface_attribute_relative_p,
3775 2, 2, 0,
3776 doc: /* Check whether a face attribute value is relative.
3777 Specifically, this function returns t if the attribute ATTRIBUTE
3778 with the value VALUE is relative.
3780 A relative value is one that doesn't entirely override whatever is
3781 inherited from another face. For most possible attributes,
3782 the only relative value that users see is `unspecified'.
3783 However, for :height, floating point values are also relative. */)
3784 (attribute, value)
3785 Lisp_Object attribute, value;
3787 if (EQ (value, Qunspecified) || (EQ (value, Qignore_defface)))
3788 return Qt;
3789 else if (EQ (attribute, QCheight))
3790 return INTEGERP (value) ? Qnil : Qt;
3791 else
3792 return Qnil;
3795 DEFUN ("merge-face-attribute", Fmerge_face_attribute, Smerge_face_attribute,
3796 3, 3, 0,
3797 doc: /* Return face ATTRIBUTE VALUE1 merged with VALUE2.
3798 If VALUE1 or VALUE2 are absolute (see `face-attribute-relative-p'), then
3799 the result will be absolute, otherwise it will be relative. */)
3800 (attribute, value1, value2)
3801 Lisp_Object attribute, value1, value2;
3803 if (EQ (value1, Qunspecified) || EQ (value1, Qignore_defface))
3804 return value2;
3805 else if (EQ (attribute, QCheight))
3806 return merge_face_heights (value1, value2, value1);
3807 else
3808 return value1;
3812 DEFUN ("internal-get-lisp-face-attribute", Finternal_get_lisp_face_attribute,
3813 Sinternal_get_lisp_face_attribute,
3814 2, 3, 0,
3815 doc: /* Return face attribute KEYWORD of face SYMBOL.
3816 If SYMBOL does not name a valid Lisp face or KEYWORD isn't a valid
3817 face attribute name, signal an error.
3818 If the optional argument FRAME is given, report on face SYMBOL in that
3819 frame. If FRAME is t, report on the defaults for face SYMBOL (for new
3820 frames). If FRAME is omitted or nil, use the selected frame. */)
3821 (symbol, keyword, frame)
3822 Lisp_Object symbol, keyword, frame;
3824 Lisp_Object lface, value = Qnil;
3826 CHECK_SYMBOL (symbol);
3827 CHECK_SYMBOL (keyword);
3829 if (EQ (frame, Qt))
3830 lface = lface_from_face_name (NULL, symbol, 1);
3831 else
3833 if (NILP (frame))
3834 frame = selected_frame;
3835 CHECK_LIVE_FRAME (frame);
3836 lface = lface_from_face_name (XFRAME (frame), symbol, 1);
3839 if (EQ (keyword, QCfamily))
3840 value = LFACE_FAMILY (lface);
3841 else if (EQ (keyword, QCfoundry))
3842 value = LFACE_FOUNDRY (lface);
3843 else if (EQ (keyword, QCheight))
3844 value = LFACE_HEIGHT (lface);
3845 else if (EQ (keyword, QCweight))
3846 value = LFACE_WEIGHT (lface);
3847 else if (EQ (keyword, QCslant))
3848 value = LFACE_SLANT (lface);
3849 else if (EQ (keyword, QCunderline))
3850 value = LFACE_UNDERLINE (lface);
3851 else if (EQ (keyword, QCoverline))
3852 value = LFACE_OVERLINE (lface);
3853 else if (EQ (keyword, QCstrike_through))
3854 value = LFACE_STRIKE_THROUGH (lface);
3855 else if (EQ (keyword, QCbox))
3856 value = LFACE_BOX (lface);
3857 else if (EQ (keyword, QCinverse_video)
3858 || EQ (keyword, QCreverse_video))
3859 value = LFACE_INVERSE (lface);
3860 else if (EQ (keyword, QCforeground))
3861 value = LFACE_FOREGROUND (lface);
3862 else if (EQ (keyword, QCbackground))
3863 value = LFACE_BACKGROUND (lface);
3864 else if (EQ (keyword, QCstipple))
3865 value = LFACE_STIPPLE (lface);
3866 else if (EQ (keyword, QCwidth))
3867 value = LFACE_SWIDTH (lface);
3868 else if (EQ (keyword, QCinherit))
3869 value = LFACE_INHERIT (lface);
3870 else if (EQ (keyword, QCfont))
3871 value = LFACE_FONT (lface);
3872 else if (EQ (keyword, QCfontset))
3873 value = LFACE_FONTSET (lface);
3874 else
3875 signal_error ("Invalid face attribute name", keyword);
3877 if (IGNORE_DEFFACE_P (value))
3878 return Qunspecified;
3880 return value;
3884 DEFUN ("internal-lisp-face-attribute-values",
3885 Finternal_lisp_face_attribute_values,
3886 Sinternal_lisp_face_attribute_values, 1, 1, 0,
3887 doc: /* Return a list of valid discrete values for face attribute ATTR.
3888 Value is nil if ATTR doesn't have a discrete set of valid values. */)
3889 (attr)
3890 Lisp_Object attr;
3892 Lisp_Object result = Qnil;
3894 CHECK_SYMBOL (attr);
3896 if (EQ (attr, QCunderline))
3897 result = Fcons (Qt, Fcons (Qnil, Qnil));
3898 else if (EQ (attr, QCoverline))
3899 result = Fcons (Qt, Fcons (Qnil, Qnil));
3900 else if (EQ (attr, QCstrike_through))
3901 result = Fcons (Qt, Fcons (Qnil, Qnil));
3902 else if (EQ (attr, QCinverse_video) || EQ (attr, QCreverse_video))
3903 result = Fcons (Qt, Fcons (Qnil, Qnil));
3905 return result;
3909 DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face,
3910 Sinternal_merge_in_global_face, 2, 2, 0,
3911 doc: /* Add attributes from frame-default definition of FACE to FACE on FRAME.
3912 Default face attributes override any local face attributes. */)
3913 (face, frame)
3914 Lisp_Object face, frame;
3916 int i;
3917 Lisp_Object global_lface, local_lface, *gvec, *lvec;
3918 struct frame *f = XFRAME (frame);
3920 CHECK_LIVE_FRAME (frame);
3921 global_lface = lface_from_face_name (NULL, face, 1);
3922 local_lface = lface_from_face_name (f, face, 0);
3923 if (NILP (local_lface))
3924 local_lface = Finternal_make_lisp_face (face, frame);
3926 /* Make every specified global attribute override the local one.
3927 BEWARE!! This is only used from `face-set-after-frame-default' where
3928 the local frame is defined from default specs in `face-defface-spec'
3929 and those should be overridden by global settings. Hence the strange
3930 "global before local" priority. */
3931 lvec = XVECTOR (local_lface)->contents;
3932 gvec = XVECTOR (global_lface)->contents;
3933 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
3934 if (IGNORE_DEFFACE_P (gvec[i]))
3935 lvec[i] = Qunspecified;
3936 else if (! UNSPECIFIEDP (gvec[i]))
3937 lvec[i] = gvec[i];
3939 /* If the default face was changed, update the face cache and the
3940 `font' frame parameter. */
3941 if (EQ (face, Qdefault))
3943 struct face_cache *c = FRAME_FACE_CACHE (f);
3944 struct face *newface, *oldface = FACE_FROM_ID (f, DEFAULT_FACE_ID);
3945 Lisp_Object attrs[LFACE_VECTOR_SIZE];
3947 /* This can be NULL (e.g., in batch mode). */
3948 if (oldface)
3950 /* Ensure that the face vector is fully specified by merging
3951 the previously-cached vector. */
3952 bcopy (oldface->lface, attrs, sizeof attrs);
3953 merge_face_vectors (f, lvec, attrs, 0);
3954 bcopy (attrs, lvec, sizeof attrs);
3955 newface = realize_face (c, lvec, DEFAULT_FACE_ID);
3957 if ((! UNSPECIFIEDP (gvec[LFACE_FAMILY_INDEX])
3958 || ! UNSPECIFIEDP (gvec[LFACE_FOUNDRY_INDEX])
3959 || ! UNSPECIFIEDP (gvec[LFACE_HEIGHT_INDEX])
3960 || ! UNSPECIFIEDP (gvec[LFACE_WEIGHT_INDEX])
3961 || ! UNSPECIFIEDP (gvec[LFACE_SLANT_INDEX])
3962 || ! UNSPECIFIEDP (gvec[LFACE_SWIDTH_INDEX])
3963 || ! UNSPECIFIEDP (gvec[LFACE_FONT_INDEX]))
3964 && newface->font)
3966 Lisp_Object name = newface->font->props[FONT_NAME_INDEX];
3967 Fmodify_frame_parameters (frame, Fcons (Fcons (Qfont, name),
3968 Qnil));
3973 return Qnil;
3977 /* The following function is implemented for compatibility with 20.2.
3978 The function is used in x-resolve-fonts when it is asked to
3979 return fonts with the same size as the font of a face. This is
3980 done in fontset.el. */
3982 DEFUN ("face-font", Fface_font, Sface_font, 1, 3, 0,
3983 doc: /* Return the font name of face FACE, or nil if it is unspecified.
3984 The font name is, by default, for ASCII characters.
3985 If the optional argument FRAME is given, report on face FACE in that frame.
3986 If FRAME is t, report on the defaults for face FACE (for new frames).
3987 The font default for a face is either nil, or a list
3988 of the form (bold), (italic) or (bold italic).
3989 If FRAME is omitted or nil, use the selected frame. And, in this case,
3990 if the optional third argument CHARACTER is given,
3991 return the font name used for CHARACTER. */)
3992 (face, frame, character)
3993 Lisp_Object face, frame, character;
3995 if (EQ (frame, Qt))
3997 Lisp_Object result = Qnil;
3998 Lisp_Object lface = lface_from_face_name (NULL, face, 1);
4000 if (!UNSPECIFIEDP (LFACE_WEIGHT (lface))
4001 && !EQ (LFACE_WEIGHT (lface), Qnormal))
4002 result = Fcons (Qbold, result);
4004 if (!UNSPECIFIEDP (LFACE_SLANT (lface))
4005 && !EQ (LFACE_SLANT (lface), Qnormal))
4006 result = Fcons (Qitalic, result);
4008 return result;
4010 else
4012 struct frame *f = frame_or_selected_frame (frame, 1);
4013 int face_id = lookup_named_face (f, face, 1);
4014 struct face *face = FACE_FROM_ID (f, face_id);
4016 if (! face)
4017 return Qnil;
4018 #ifdef HAVE_WINDOW_SYSTEM
4019 if (FRAME_WINDOW_P (f) && !NILP (character))
4021 CHECK_CHARACTER (character);
4022 face_id = FACE_FOR_CHAR (f, face, XINT (character), -1, Qnil);
4023 face = FACE_FROM_ID (f, face_id);
4025 return (face->font
4026 ? face->font->props[FONT_NAME_INDEX]
4027 : Qnil);
4028 #else /* !HAVE_WINDOW_SYSTEM */
4029 return build_string (FRAME_MSDOS_P (f)
4030 ? "ms-dos"
4031 : FRAME_W32_P (f) ? "w32term"
4032 :"tty");
4033 #endif
4038 /* Compare face-attribute values v1 and v2 for equality. Value is non-zero if
4039 all attributes are `equal'. Tries to be fast because this function
4040 is called quite often. */
4042 static INLINE int
4043 face_attr_equal_p (v1, v2)
4044 Lisp_Object v1, v2;
4046 /* Type can differ, e.g. when one attribute is unspecified, i.e. nil,
4047 and the other is specified. */
4048 if (XTYPE (v1) != XTYPE (v2))
4049 return 0;
4051 if (EQ (v1, v2))
4052 return 1;
4054 switch (XTYPE (v1))
4056 case Lisp_String:
4057 if (SBYTES (v1) != SBYTES (v2))
4058 return 0;
4060 return bcmp (SDATA (v1), SDATA (v2), SBYTES (v1)) == 0;
4062 case Lisp_Int:
4063 case Lisp_Symbol:
4064 return 0;
4066 default:
4067 return !NILP (Fequal (v1, v2));
4072 /* Compare face vectors V1 and V2 for equality. Value is non-zero if
4073 all attributes are `equal'. Tries to be fast because this function
4074 is called quite often. */
4076 static INLINE int
4077 lface_equal_p (v1, v2)
4078 Lisp_Object *v1, *v2;
4080 int i, equal_p = 1;
4082 for (i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i)
4083 equal_p = face_attr_equal_p (v1[i], v2[i]);
4085 return equal_p;
4089 DEFUN ("internal-lisp-face-equal-p", Finternal_lisp_face_equal_p,
4090 Sinternal_lisp_face_equal_p, 2, 3, 0,
4091 doc: /* True if FACE1 and FACE2 are equal.
4092 If the optional argument FRAME is given, report on FACE1 and FACE2 in that frame.
4093 If FRAME is t, report on the defaults for FACE1 and FACE2 (for new frames).
4094 If FRAME is omitted or nil, use the selected frame. */)
4095 (face1, face2, frame)
4096 Lisp_Object face1, face2, frame;
4098 int equal_p;
4099 struct frame *f;
4100 Lisp_Object lface1, lface2;
4102 if (EQ (frame, Qt))
4103 f = NULL;
4104 else
4105 /* Don't use check_x_frame here because this function is called
4106 before X frames exist. At that time, if FRAME is nil,
4107 selected_frame will be used which is the frame dumped with
4108 Emacs. That frame is not an X frame. */
4109 f = frame_or_selected_frame (frame, 2);
4111 lface1 = lface_from_face_name (f, face1, 1);
4112 lface2 = lface_from_face_name (f, face2, 1);
4113 equal_p = lface_equal_p (XVECTOR (lface1)->contents,
4114 XVECTOR (lface2)->contents);
4115 return equal_p ? Qt : Qnil;
4119 DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p,
4120 Sinternal_lisp_face_empty_p, 1, 2, 0,
4121 doc: /* True if FACE has no attribute specified.
4122 If the optional argument FRAME is given, report on face FACE in that frame.
4123 If FRAME is t, report on the defaults for face FACE (for new frames).
4124 If FRAME is omitted or nil, use the selected frame. */)
4125 (face, frame)
4126 Lisp_Object face, frame;
4128 struct frame *f;
4129 Lisp_Object lface;
4130 int i;
4132 if (NILP (frame))
4133 frame = selected_frame;
4134 CHECK_LIVE_FRAME (frame);
4135 f = XFRAME (frame);
4137 if (EQ (frame, Qt))
4138 lface = lface_from_face_name (NULL, face, 1);
4139 else
4140 lface = lface_from_face_name (f, face, 1);
4142 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
4143 if (!UNSPECIFIEDP (AREF (lface, i)))
4144 break;
4146 return i == LFACE_VECTOR_SIZE ? Qt : Qnil;
4150 DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist,
4151 0, 1, 0,
4152 doc: /* Return an alist of frame-local faces defined on FRAME.
4153 For internal use only. */)
4154 (frame)
4155 Lisp_Object frame;
4157 struct frame *f = frame_or_selected_frame (frame, 0);
4158 return f->face_alist;
4162 /* Return a hash code for Lisp string STRING with case ignored. Used
4163 below in computing a hash value for a Lisp face. */
4165 static INLINE unsigned
4166 hash_string_case_insensitive (string)
4167 Lisp_Object string;
4169 const unsigned char *s;
4170 unsigned hash = 0;
4171 xassert (STRINGP (string));
4172 for (s = SDATA (string); *s; ++s)
4173 hash = (hash << 1) ^ tolower (*s);
4174 return hash;
4178 /* Return a hash code for face attribute vector V. */
4180 static INLINE unsigned
4181 lface_hash (v)
4182 Lisp_Object *v;
4184 return (hash_string_case_insensitive (v[LFACE_FAMILY_INDEX])
4185 ^ hash_string_case_insensitive (v[LFACE_FOUNDRY_INDEX])
4186 ^ hash_string_case_insensitive (v[LFACE_FOREGROUND_INDEX])
4187 ^ hash_string_case_insensitive (v[LFACE_BACKGROUND_INDEX])
4188 ^ XHASH (v[LFACE_WEIGHT_INDEX])
4189 ^ XHASH (v[LFACE_SLANT_INDEX])
4190 ^ XHASH (v[LFACE_SWIDTH_INDEX])
4191 ^ XHASH (v[LFACE_HEIGHT_INDEX]));
4195 /* Return non-zero if LFACE1 and LFACE2 specify the same font (without
4196 considering charsets/registries). They do if they specify the same
4197 family, point size, weight, width, slant, and font. Both
4198 LFACE1 and LFACE2 must be fully-specified. */
4200 static INLINE int
4201 lface_same_font_attributes_p (lface1, lface2)
4202 Lisp_Object *lface1, *lface2;
4204 xassert (lface_fully_specified_p (lface1)
4205 && lface_fully_specified_p (lface2));
4206 return (xstrcasecmp (SDATA (lface1[LFACE_FAMILY_INDEX]),
4207 SDATA (lface2[LFACE_FAMILY_INDEX])) == 0
4208 && xstrcasecmp (SDATA (lface1[LFACE_FOUNDRY_INDEX]),
4209 SDATA (lface2[LFACE_FOUNDRY_INDEX])) == 0
4210 && EQ (lface1[LFACE_HEIGHT_INDEX], lface2[LFACE_HEIGHT_INDEX])
4211 && EQ (lface1[LFACE_SWIDTH_INDEX], lface2[LFACE_SWIDTH_INDEX])
4212 && EQ (lface1[LFACE_WEIGHT_INDEX], lface2[LFACE_WEIGHT_INDEX])
4213 && EQ (lface1[LFACE_SLANT_INDEX], lface2[LFACE_SLANT_INDEX])
4214 && EQ (lface1[LFACE_FONT_INDEX], lface2[LFACE_FONT_INDEX])
4215 && (EQ (lface1[LFACE_FONTSET_INDEX], lface2[LFACE_FONTSET_INDEX])
4216 || (STRINGP (lface1[LFACE_FONTSET_INDEX])
4217 && STRINGP (lface2[LFACE_FONTSET_INDEX])
4218 && ! xstrcasecmp (SDATA (lface1[LFACE_FONTSET_INDEX]),
4219 SDATA (lface2[LFACE_FONTSET_INDEX]))))
4225 /***********************************************************************
4226 Realized Faces
4227 ***********************************************************************/
4229 /* Allocate and return a new realized face for Lisp face attribute
4230 vector ATTR. */
4232 static struct face *
4233 make_realized_face (attr)
4234 Lisp_Object *attr;
4236 struct face *face = (struct face *) xmalloc (sizeof *face);
4237 bzero (face, sizeof *face);
4238 face->ascii_face = face;
4239 bcopy (attr, face->lface, sizeof face->lface);
4240 return face;
4244 /* Free realized face FACE, including its X resources. FACE may
4245 be null. */
4247 void
4248 free_realized_face (f, face)
4249 struct frame *f;
4250 struct face *face;
4252 if (face)
4254 #ifdef HAVE_WINDOW_SYSTEM
4255 if (FRAME_WINDOW_P (f))
4257 /* Free fontset of FACE if it is ASCII face. */
4258 if (face->fontset >= 0 && face == face->ascii_face)
4259 free_face_fontset (f, face);
4260 if (face->gc)
4262 BLOCK_INPUT;
4263 if (face->font)
4264 font_done_for_face (f, face);
4265 x_free_gc (f, face->gc);
4266 face->gc = 0;
4267 UNBLOCK_INPUT;
4270 free_face_colors (f, face);
4271 x_destroy_bitmap (f, face->stipple);
4273 #endif /* HAVE_WINDOW_SYSTEM */
4275 xfree (face);
4280 /* Prepare face FACE for subsequent display on frame F. This
4281 allocated GCs if they haven't been allocated yet or have been freed
4282 by clearing the face cache. */
4284 void
4285 prepare_face_for_display (f, face)
4286 struct frame *f;
4287 struct face *face;
4289 #ifdef HAVE_WINDOW_SYSTEM
4290 xassert (FRAME_WINDOW_P (f));
4292 if (face->gc == 0)
4294 XGCValues xgcv;
4295 unsigned long mask = GCForeground | GCBackground | GCGraphicsExposures;
4297 xgcv.foreground = face->foreground;
4298 xgcv.background = face->background;
4299 #ifdef HAVE_X_WINDOWS
4300 xgcv.graphics_exposures = False;
4301 #endif
4303 BLOCK_INPUT;
4304 #ifdef HAVE_X_WINDOWS
4305 if (face->stipple)
4307 xgcv.fill_style = FillOpaqueStippled;
4308 xgcv.stipple = x_bitmap_pixmap (f, face->stipple);
4309 mask |= GCFillStyle | GCStipple;
4311 #endif
4312 face->gc = x_create_gc (f, mask, &xgcv);
4313 if (face->font)
4314 font_prepare_for_face (f, face);
4315 UNBLOCK_INPUT;
4317 #endif /* HAVE_WINDOW_SYSTEM */
4321 /* Returns the `distance' between the colors X and Y. */
4323 static int
4324 color_distance (x, y)
4325 XColor *x, *y;
4327 /* This formula is from a paper title `Colour metric' by Thiadmer Riemersma.
4328 Quoting from that paper:
4330 This formula has results that are very close to L*u*v* (with the
4331 modified lightness curve) and, more importantly, it is a more even
4332 algorithm: it does not have a range of colours where it suddenly
4333 gives far from optimal results.
4335 See <http://www.compuphase.com/cmetric.htm> for more info. */
4337 long r = (x->red - y->red) >> 8;
4338 long g = (x->green - y->green) >> 8;
4339 long b = (x->blue - y->blue) >> 8;
4340 long r_mean = (x->red + y->red) >> 9;
4342 return
4343 (((512 + r_mean) * r * r) >> 8)
4344 + 4 * g * g
4345 + (((767 - r_mean) * b * b) >> 8);
4349 DEFUN ("color-distance", Fcolor_distance, Scolor_distance, 2, 3, 0,
4350 doc: /* Return an integer distance between COLOR1 and COLOR2 on FRAME.
4351 COLOR1 and COLOR2 may be either strings containing the color name,
4352 or lists of the form (RED GREEN BLUE).
4353 If FRAME is unspecified or nil, the current frame is used. */)
4354 (color1, color2, frame)
4355 Lisp_Object color1, color2, frame;
4357 struct frame *f;
4358 XColor cdef1, cdef2;
4360 if (NILP (frame))
4361 frame = selected_frame;
4362 CHECK_LIVE_FRAME (frame);
4363 f = XFRAME (frame);
4365 if (!(CONSP (color1) && parse_rgb_list (color1, &cdef1))
4366 && !(STRINGP (color1) && defined_color (f, SDATA (color1), &cdef1, 0)))
4367 signal_error ("Invalid color", color1);
4368 if (!(CONSP (color2) && parse_rgb_list (color2, &cdef2))
4369 && !(STRINGP (color2) && defined_color (f, SDATA (color2), &cdef2, 0)))
4370 signal_error ("Invalid color", color2);
4372 return make_number (color_distance (&cdef1, &cdef2));
4376 /***********************************************************************
4377 Face Cache
4378 ***********************************************************************/
4380 /* Return a new face cache for frame F. */
4382 static struct face_cache *
4383 make_face_cache (f)
4384 struct frame *f;
4386 struct face_cache *c;
4387 int size;
4389 c = (struct face_cache *) xmalloc (sizeof *c);
4390 bzero (c, sizeof *c);
4391 size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
4392 c->buckets = (struct face **) xmalloc (size);
4393 bzero (c->buckets, size);
4394 c->size = 50;
4395 c->faces_by_id = (struct face **) xmalloc (c->size * sizeof *c->faces_by_id);
4396 c->f = f;
4397 c->menu_face_changed_p = menu_face_changed_default;
4398 return c;
4402 /* Clear out all graphics contexts for all realized faces, except for
4403 the basic faces. This should be done from time to time just to avoid
4404 keeping too many graphics contexts that are no longer needed. */
4406 static void
4407 clear_face_gcs (c)
4408 struct face_cache *c;
4410 if (c && FRAME_WINDOW_P (c->f))
4412 #ifdef HAVE_WINDOW_SYSTEM
4413 int i;
4414 for (i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i)
4416 struct face *face = c->faces_by_id[i];
4417 if (face && face->gc)
4419 BLOCK_INPUT;
4420 if (face->font)
4421 font_done_for_face (c->f, face);
4422 x_free_gc (c->f, face->gc);
4423 face->gc = 0;
4424 UNBLOCK_INPUT;
4427 #endif /* HAVE_WINDOW_SYSTEM */
4432 /* Free all realized faces in face cache C, including basic faces.
4433 C may be null. If faces are freed, make sure the frame's current
4434 matrix is marked invalid, so that a display caused by an expose
4435 event doesn't try to use faces we destroyed. */
4437 static void
4438 free_realized_faces (c)
4439 struct face_cache *c;
4441 if (c && c->used)
4443 int i, size;
4444 struct frame *f = c->f;
4446 /* We must block input here because we can't process X events
4447 safely while only some faces are freed, or when the frame's
4448 current matrix still references freed faces. */
4449 BLOCK_INPUT;
4451 for (i = 0; i < c->used; ++i)
4453 free_realized_face (f, c->faces_by_id[i]);
4454 c->faces_by_id[i] = NULL;
4457 c->used = 0;
4458 size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
4459 bzero (c->buckets, size);
4461 /* Must do a thorough redisplay the next time. Mark current
4462 matrices as invalid because they will reference faces freed
4463 above. This function is also called when a frame is
4464 destroyed. In this case, the root window of F is nil. */
4465 if (WINDOWP (f->root_window))
4467 clear_current_matrices (f);
4468 ++windows_or_buffers_changed;
4471 UNBLOCK_INPUT;
4476 /* Free all realized faces that are using FONTSET on frame F. */
4478 void
4479 free_realized_faces_for_fontset (f, fontset)
4480 struct frame *f;
4481 int fontset;
4483 struct face_cache *cache = FRAME_FACE_CACHE (f);
4484 struct face *face;
4485 int i;
4487 /* We must block input here because we can't process X events safely
4488 while only some faces are freed, or when the frame's current
4489 matrix still references freed faces. */
4490 BLOCK_INPUT;
4492 for (i = 0; i < cache->used; i++)
4494 face = cache->faces_by_id[i];
4495 if (face
4496 && face->fontset == fontset)
4498 uncache_face (cache, face);
4499 free_realized_face (f, face);
4503 /* Must do a thorough redisplay the next time. Mark current
4504 matrices as invalid because they will reference faces freed
4505 above. This function is also called when a frame is destroyed.
4506 In this case, the root window of F is nil. */
4507 if (WINDOWP (f->root_window))
4509 clear_current_matrices (f);
4510 ++windows_or_buffers_changed;
4513 UNBLOCK_INPUT;
4517 /* Free all realized faces on FRAME or on all frames if FRAME is nil.
4518 This is done after attributes of a named face have been changed,
4519 because we can't tell which realized faces depend on that face. */
4521 void
4522 free_all_realized_faces (frame)
4523 Lisp_Object frame;
4525 if (NILP (frame))
4527 Lisp_Object rest;
4528 FOR_EACH_FRAME (rest, frame)
4529 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame)));
4531 else
4532 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame)));
4536 /* Free face cache C and faces in it, including their X resources. */
4538 static void
4539 free_face_cache (c)
4540 struct face_cache *c;
4542 if (c)
4544 free_realized_faces (c);
4545 xfree (c->buckets);
4546 xfree (c->faces_by_id);
4547 xfree (c);
4552 /* Cache realized face FACE in face cache C. HASH is the hash value
4553 of FACE. If FACE is for ASCII characters (i.e. FACE->ascii_face ==
4554 FACE), insert the new face to the beginning of the collision list
4555 of the face hash table of C. Otherwise, add the new face to the
4556 end of the collision list. This way, lookup_face can quickly find
4557 that a requested face is not cached. */
4559 static void
4560 cache_face (c, face, hash)
4561 struct face_cache *c;
4562 struct face *face;
4563 unsigned hash;
4565 int i = hash % FACE_CACHE_BUCKETS_SIZE;
4567 face->hash = hash;
4569 if (face->ascii_face != face)
4571 struct face *last = c->buckets[i];
4572 if (last)
4574 while (last->next)
4575 last = last->next;
4576 last->next = face;
4577 face->prev = last;
4578 face->next = NULL;
4580 else
4582 c->buckets[i] = face;
4583 face->prev = face->next = NULL;
4586 else
4588 face->prev = NULL;
4589 face->next = c->buckets[i];
4590 if (face->next)
4591 face->next->prev = face;
4592 c->buckets[i] = face;
4595 /* Find a free slot in C->faces_by_id and use the index of the free
4596 slot as FACE->id. */
4597 for (i = 0; i < c->used; ++i)
4598 if (c->faces_by_id[i] == NULL)
4599 break;
4600 face->id = i;
4602 /* Maybe enlarge C->faces_by_id. */
4603 if (i == c->used)
4605 if (c->used == c->size)
4607 int new_size, sz;
4608 new_size = min (2 * c->size, MAX_FACE_ID);
4609 if (new_size == c->size)
4610 abort (); /* Alternatives? ++kfs */
4611 sz = new_size * sizeof *c->faces_by_id;
4612 c->faces_by_id = (struct face **) xrealloc (c->faces_by_id, sz);
4613 c->size = new_size;
4615 c->used++;
4618 #if GLYPH_DEBUG
4619 /* Check that FACE got a unique id. */
4621 int j, n;
4622 struct face *face;
4624 for (j = n = 0; j < FACE_CACHE_BUCKETS_SIZE; ++j)
4625 for (face = c->buckets[j]; face; face = face->next)
4626 if (face->id == i)
4627 ++n;
4629 xassert (n == 1);
4631 #endif /* GLYPH_DEBUG */
4633 c->faces_by_id[i] = face;
4637 /* Remove face FACE from cache C. */
4639 static void
4640 uncache_face (c, face)
4641 struct face_cache *c;
4642 struct face *face;
4644 int i = face->hash % FACE_CACHE_BUCKETS_SIZE;
4646 if (face->prev)
4647 face->prev->next = face->next;
4648 else
4649 c->buckets[i] = face->next;
4651 if (face->next)
4652 face->next->prev = face->prev;
4654 c->faces_by_id[face->id] = NULL;
4655 if (face->id == c->used)
4656 --c->used;
4660 /* Look up a realized face with face attributes ATTR in the face cache
4661 of frame F. The face will be used to display ASCII characters.
4662 Value is the ID of the face found. If no suitable face is found,
4663 realize a new one. */
4665 INLINE int
4666 lookup_face (f, attr)
4667 struct frame *f;
4668 Lisp_Object *attr;
4670 struct face_cache *cache = FRAME_FACE_CACHE (f);
4671 unsigned hash;
4672 int i;
4673 struct face *face;
4675 xassert (cache != NULL);
4676 check_lface_attrs (attr);
4678 /* Look up ATTR in the face cache. */
4679 hash = lface_hash (attr);
4680 i = hash % FACE_CACHE_BUCKETS_SIZE;
4682 for (face = cache->buckets[i]; face; face = face->next)
4684 if (face->ascii_face != face)
4686 /* There's no more ASCII face. */
4687 face = NULL;
4688 break;
4690 if (face->hash == hash
4691 && lface_equal_p (face->lface, attr))
4692 break;
4695 /* If not found, realize a new face. */
4696 if (face == NULL)
4697 face = realize_face (cache, attr, -1);
4699 #if GLYPH_DEBUG
4700 xassert (face == FACE_FROM_ID (f, face->id));
4701 #endif /* GLYPH_DEBUG */
4703 return face->id;
4706 #ifdef HAVE_WINDOW_SYSTEM
4707 /* Look up a realized face that has the same attributes as BASE_FACE
4708 except for the font in the face cache of frame F. If FONT-OBJECT
4709 is not nil, it is an already opened font. If FONT-OBJECT is nil,
4710 the face has no font. Value is the ID of the face found. If no
4711 suitable face is found, realize a new one. */
4714 face_for_font (f, font_object, base_face)
4715 struct frame *f;
4716 Lisp_Object font_object;
4717 struct face *base_face;
4719 struct face_cache *cache = FRAME_FACE_CACHE (f);
4720 unsigned hash;
4721 int i;
4722 struct face *face;
4724 xassert (cache != NULL);
4725 base_face = base_face->ascii_face;
4726 hash = lface_hash (base_face->lface);
4727 i = hash % FACE_CACHE_BUCKETS_SIZE;
4729 for (face = cache->buckets[i]; face; face = face->next)
4731 if (face->ascii_face == face)
4732 continue;
4733 if (face->ascii_face == base_face
4734 && face->font == (NILP (font_object) ? NULL
4735 : XFONT_OBJECT (font_object))
4736 && lface_equal_p (face->lface, base_face->lface))
4737 return face->id;
4740 /* If not found, realize a new face. */
4741 face = realize_non_ascii_face (f, font_object, base_face);
4742 return face->id;
4744 #endif /* HAVE_WINDOW_SYSTEM */
4746 /* Return the face id of the realized face for named face SYMBOL on
4747 frame F suitable for displaying ASCII characters. Value is -1 if
4748 the face couldn't be determined, which might happen if the default
4749 face isn't realized and cannot be realized. */
4752 lookup_named_face (f, symbol, signal_p)
4753 struct frame *f;
4754 Lisp_Object symbol;
4755 int signal_p;
4757 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4758 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
4759 struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
4761 if (default_face == NULL)
4763 if (!realize_basic_faces (f))
4764 return -1;
4765 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
4766 if (default_face == NULL)
4767 abort (); /* realize_basic_faces must have set it up */
4770 if (! get_lface_attributes (f, symbol, symbol_attrs, signal_p, 0))
4771 return -1;
4773 bcopy (default_face->lface, attrs, sizeof attrs);
4774 merge_face_vectors (f, symbol_attrs, attrs, 0);
4776 return lookup_face (f, attrs);
4780 /* Return the display face-id of the basic face who's canonical face-id
4781 is FACE_ID. The return value will usually simply be FACE_ID, unless that
4782 basic face has bee remapped via Vface_remapping_alist. This function is
4783 conservative: if something goes wrong, it will simply return FACE_ID
4784 rather than signal an error. */
4787 lookup_basic_face (f, face_id)
4788 struct frame *f;
4789 int face_id;
4791 Lisp_Object name, mapping;
4792 int remapped_face_id;
4794 if (NILP (Vface_remapping_alist))
4795 return face_id; /* Nothing to do. */
4797 switch (face_id)
4799 case DEFAULT_FACE_ID: name = Qdefault; break;
4800 case MODE_LINE_FACE_ID: name = Qmode_line; break;
4801 case MODE_LINE_INACTIVE_FACE_ID: name = Qmode_line_inactive; break;
4802 case HEADER_LINE_FACE_ID: name = Qheader_line; break;
4803 case TOOL_BAR_FACE_ID: name = Qtool_bar; break;
4804 case FRINGE_FACE_ID: name = Qfringe; break;
4805 case SCROLL_BAR_FACE_ID: name = Qscroll_bar; break;
4806 case BORDER_FACE_ID: name = Qborder; break;
4807 case CURSOR_FACE_ID: name = Qcursor; break;
4808 case MOUSE_FACE_ID: name = Qmouse; break;
4809 case MENU_FACE_ID: name = Qmenu; break;
4811 default:
4812 abort (); /* the caller is supposed to pass us a basic face id */
4815 /* Do a quick scan through Vface_remapping_alist, and return immediately
4816 if there is no remapping for face NAME. This is just an optimization
4817 for the very common no-remapping case. */
4818 mapping = assq_no_quit (name, Vface_remapping_alist);
4819 if (NILP (mapping))
4820 return face_id; /* Give up. */
4822 /* If there is a remapping entry, lookup the face using NAME, which will
4823 handle the remapping too. */
4824 remapped_face_id = lookup_named_face (f, name, 0);
4825 if (remapped_face_id < 0)
4826 return face_id; /* Give up. */
4828 return remapped_face_id;
4832 /* Return the ID of the realized ASCII face of Lisp face with ID
4833 LFACE_ID on frame F. Value is -1 if LFACE_ID isn't valid. */
4836 ascii_face_of_lisp_face (f, lface_id)
4837 struct frame *f;
4838 int lface_id;
4840 int face_id;
4842 if (lface_id >= 0 && lface_id < lface_id_to_name_size)
4844 Lisp_Object face_name = lface_id_to_name[lface_id];
4845 face_id = lookup_named_face (f, face_name, 1);
4847 else
4848 face_id = -1;
4850 return face_id;
4854 /* Return a face for charset ASCII that is like the face with id
4855 FACE_ID on frame F, but has a font that is STEPS steps smaller.
4856 STEPS < 0 means larger. Value is the id of the face. */
4859 smaller_face (f, face_id, steps)
4860 struct frame *f;
4861 int face_id, steps;
4863 #ifdef HAVE_WINDOW_SYSTEM
4864 struct face *face;
4865 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4866 int pt, last_pt, last_height;
4867 int delta;
4868 int new_face_id;
4869 struct face *new_face;
4871 /* If not called for an X frame, just return the original face. */
4872 if (FRAME_TERMCAP_P (f))
4873 return face_id;
4875 /* Try in increments of 1/2 pt. */
4876 delta = steps < 0 ? 5 : -5;
4877 steps = eabs (steps);
4879 face = FACE_FROM_ID (f, face_id);
4880 bcopy (face->lface, attrs, sizeof attrs);
4881 pt = last_pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]);
4882 new_face_id = face_id;
4883 last_height = FONT_HEIGHT (face->font);
4885 while (steps
4886 && pt + delta > 0
4887 /* Give up if we cannot find a font within 10pt. */
4888 && eabs (last_pt - pt) < 100)
4890 /* Look up a face for a slightly smaller/larger font. */
4891 pt += delta;
4892 attrs[LFACE_HEIGHT_INDEX] = make_number (pt);
4893 new_face_id = lookup_face (f, attrs);
4894 new_face = FACE_FROM_ID (f, new_face_id);
4896 /* If height changes, count that as one step. */
4897 if ((delta < 0 && FONT_HEIGHT (new_face->font) < last_height)
4898 || (delta > 0 && FONT_HEIGHT (new_face->font) > last_height))
4900 --steps;
4901 last_height = FONT_HEIGHT (new_face->font);
4902 last_pt = pt;
4906 return new_face_id;
4908 #else /* not HAVE_WINDOW_SYSTEM */
4910 return face_id;
4912 #endif /* not HAVE_WINDOW_SYSTEM */
4916 /* Return a face for charset ASCII that is like the face with id
4917 FACE_ID on frame F, but has height HEIGHT. */
4920 face_with_height (f, face_id, height)
4921 struct frame *f;
4922 int face_id;
4923 int height;
4925 #ifdef HAVE_WINDOW_SYSTEM
4926 struct face *face;
4927 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4929 if (FRAME_TERMCAP_P (f)
4930 || height <= 0)
4931 return face_id;
4933 face = FACE_FROM_ID (f, face_id);
4934 bcopy (face->lface, attrs, sizeof attrs);
4935 attrs[LFACE_HEIGHT_INDEX] = make_number (height);
4936 face_id = lookup_face (f, attrs);
4937 #endif /* HAVE_WINDOW_SYSTEM */
4939 return face_id;
4943 /* Return the face id of the realized face for named face SYMBOL on
4944 frame F suitable for displaying ASCII characters, and use
4945 attributes of the face FACE_ID for attributes that aren't
4946 completely specified by SYMBOL. This is like lookup_named_face,
4947 except that the default attributes come from FACE_ID, not from the
4948 default face. FACE_ID is assumed to be already realized. */
4951 lookup_derived_face (f, symbol, face_id, signal_p)
4952 struct frame *f;
4953 Lisp_Object symbol;
4954 int face_id;
4955 int signal_p;
4957 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4958 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
4959 struct face *default_face = FACE_FROM_ID (f, face_id);
4961 if (!default_face)
4962 abort ();
4964 if (!get_lface_attributes (f, symbol, symbol_attrs, signal_p, 0))
4965 return -1;
4967 bcopy (default_face->lface, attrs, sizeof attrs);
4968 merge_face_vectors (f, symbol_attrs, attrs, 0);
4969 return lookup_face (f, attrs);
4972 DEFUN ("face-attributes-as-vector", Fface_attributes_as_vector,
4973 Sface_attributes_as_vector, 1, 1, 0,
4974 doc: /* Return a vector of face attributes corresponding to PLIST. */)
4975 (plist)
4976 Lisp_Object plist;
4978 Lisp_Object lface;
4979 lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
4980 Qunspecified);
4981 merge_face_ref (XFRAME (selected_frame), plist, XVECTOR (lface)->contents,
4982 1, 0);
4983 return lface;
4988 /***********************************************************************
4989 Face capability testing
4990 ***********************************************************************/
4993 /* If the distance (as returned by color_distance) between two colors is
4994 less than this, then they are considered the same, for determining
4995 whether a color is supported or not. The range of values is 0-65535. */
4997 #define TTY_SAME_COLOR_THRESHOLD 10000
4999 #ifdef HAVE_WINDOW_SYSTEM
5001 /* Return non-zero if all the face attributes in ATTRS are supported
5002 on the window-system frame F.
5004 The definition of `supported' is somewhat heuristic, but basically means
5005 that a face containing all the attributes in ATTRS, when merged with the
5006 default face for display, can be represented in a way that's
5008 \(1) different in appearance than the default face, and
5009 \(2) `close in spirit' to what the attributes specify, if not exact. */
5011 static int
5012 x_supports_face_attributes_p (f, attrs, def_face)
5013 struct frame *f;
5014 Lisp_Object *attrs;
5015 struct face *def_face;
5017 Lisp_Object *def_attrs = def_face->lface;
5019 /* Check that other specified attributes are different that the default
5020 face. */
5021 if ((!UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX])
5022 && face_attr_equal_p (attrs[LFACE_UNDERLINE_INDEX],
5023 def_attrs[LFACE_UNDERLINE_INDEX]))
5024 || (!UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX])
5025 && face_attr_equal_p (attrs[LFACE_INVERSE_INDEX],
5026 def_attrs[LFACE_INVERSE_INDEX]))
5027 || (!UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX])
5028 && face_attr_equal_p (attrs[LFACE_FOREGROUND_INDEX],
5029 def_attrs[LFACE_FOREGROUND_INDEX]))
5030 || (!UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX])
5031 && face_attr_equal_p (attrs[LFACE_BACKGROUND_INDEX],
5032 def_attrs[LFACE_BACKGROUND_INDEX]))
5033 || (!UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
5034 && face_attr_equal_p (attrs[LFACE_STIPPLE_INDEX],
5035 def_attrs[LFACE_STIPPLE_INDEX]))
5036 || (!UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
5037 && face_attr_equal_p (attrs[LFACE_OVERLINE_INDEX],
5038 def_attrs[LFACE_OVERLINE_INDEX]))
5039 || (!UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
5040 && face_attr_equal_p (attrs[LFACE_STRIKE_THROUGH_INDEX],
5041 def_attrs[LFACE_STRIKE_THROUGH_INDEX]))
5042 || (!UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
5043 && face_attr_equal_p (attrs[LFACE_BOX_INDEX],
5044 def_attrs[LFACE_BOX_INDEX])))
5045 return 0;
5047 /* Check font-related attributes, as those are the most commonly
5048 "unsupported" on a window-system (because of missing fonts). */
5049 if (!UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
5050 || !UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
5051 || !UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
5052 || !UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX])
5053 || !UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX])
5054 || !UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX]))
5056 int face_id;
5057 struct face *face;
5058 Lisp_Object merged_attrs[LFACE_VECTOR_SIZE];
5059 int i;
5061 bcopy (def_attrs, merged_attrs, sizeof merged_attrs);
5063 merge_face_vectors (f, attrs, merged_attrs, 0);
5065 face_id = lookup_face (f, merged_attrs);
5066 face = FACE_FROM_ID (f, face_id);
5068 if (! face)
5069 error ("Cannot make face");
5071 /* If the font is the same, or no font is found, then not
5072 supported. */
5073 if (face->font == def_face->font
5074 || ! face->font)
5075 return 0;
5076 for (i = FONT_TYPE_INDEX; i <= FONT_SIZE_INDEX; i++)
5077 if (! EQ (face->font->props[i], def_face->font->props[i]))
5079 Lisp_Object s1, s2;
5081 if (i < FONT_FOUNDRY_INDEX || i > FONT_REGISTRY_INDEX
5082 || face->font->driver->case_sensitive)
5083 return 1;
5084 s1 = SYMBOL_NAME (face->font->props[i]);
5085 s2 = SYMBOL_NAME (def_face->font->props[i]);
5086 if (! EQ (Fcompare_strings (s1, make_number (0), Qnil,
5087 s2, make_number (0), Qnil, Qt), Qt))
5088 return 1;
5090 return 0;
5093 /* Everything checks out, this face is supported. */
5094 return 1;
5097 #endif /* HAVE_WINDOW_SYSTEM */
5099 /* Return non-zero if all the face attributes in ATTRS are supported
5100 on the tty frame F.
5102 The definition of `supported' is somewhat heuristic, but basically means
5103 that a face containing all the attributes in ATTRS, when merged
5104 with the default face for display, can be represented in a way that's
5106 \(1) different in appearance than the default face, and
5107 \(2) `close in spirit' to what the attributes specify, if not exact.
5109 Point (2) implies that a `:weight black' attribute will be satisfied
5110 by any terminal that can display bold, and a `:foreground "yellow"' as
5111 long as the terminal can display a yellowish color, but `:slant italic'
5112 will _not_ be satisfied by the tty display code's automatic
5113 substitution of a `dim' face for italic. */
5115 static int
5116 tty_supports_face_attributes_p (f, attrs, def_face)
5117 struct frame *f;
5118 Lisp_Object *attrs;
5119 struct face *def_face;
5121 int weight;
5122 Lisp_Object val, fg, bg;
5123 XColor fg_tty_color, fg_std_color;
5124 XColor bg_tty_color, bg_std_color;
5125 unsigned test_caps = 0;
5126 Lisp_Object *def_attrs = def_face->lface;
5129 /* First check some easy-to-check stuff; ttys support none of the
5130 following attributes, so we can just return false if any are requested
5131 (even if `nominal' values are specified, we should still return false,
5132 as that will be the same value that the default face uses). We
5133 consider :slant unsupportable on ttys, even though the face code
5134 actually `fakes' them using a dim attribute if possible. This is
5135 because the faked result is too different from what the face
5136 specifies. */
5137 if (!UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
5138 || !UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
5139 || !UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
5140 || !UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
5141 || !UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX])
5142 || !UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
5143 || !UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
5144 || !UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
5145 || !UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX]))
5146 return 0;
5149 /* Test for terminal `capabilities' (non-color character attributes). */
5151 /* font weight (bold/dim) */
5152 weight = FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]);
5153 if (weight >= 0)
5155 int def_weight = FONT_WEIGHT_NAME_NUMERIC (def_attrs[LFACE_WEIGHT_INDEX]);
5157 if (weight > 100)
5159 if (def_weight > 100)
5160 return 0; /* same as default */
5161 test_caps = TTY_CAP_BOLD;
5163 else if (weight < 100)
5165 if (def_weight < 100)
5166 return 0; /* same as default */
5167 test_caps = TTY_CAP_DIM;
5169 else if (def_weight == 100)
5170 return 0; /* same as default */
5173 /* underlining */
5174 val = attrs[LFACE_UNDERLINE_INDEX];
5175 if (!UNSPECIFIEDP (val))
5177 if (STRINGP (val))
5178 return 0; /* ttys can't use colored underlines */
5179 else if (face_attr_equal_p (val, def_attrs[LFACE_UNDERLINE_INDEX]))
5180 return 0; /* same as default */
5181 else
5182 test_caps |= TTY_CAP_UNDERLINE;
5185 /* inverse video */
5186 val = attrs[LFACE_INVERSE_INDEX];
5187 if (!UNSPECIFIEDP (val))
5189 if (face_attr_equal_p (val, def_attrs[LFACE_INVERSE_INDEX]))
5190 return 0; /* same as default */
5191 else
5192 test_caps |= TTY_CAP_INVERSE;
5196 /* Color testing. */
5198 /* Default the color indices in FG_TTY_COLOR and BG_TTY_COLOR, since
5199 we use them when calling `tty_capable_p' below, even if the face
5200 specifies no colors. */
5201 fg_tty_color.pixel = FACE_TTY_DEFAULT_FG_COLOR;
5202 bg_tty_color.pixel = FACE_TTY_DEFAULT_BG_COLOR;
5204 /* Check if foreground color is close enough. */
5205 fg = attrs[LFACE_FOREGROUND_INDEX];
5206 if (STRINGP (fg))
5208 Lisp_Object def_fg = def_attrs[LFACE_FOREGROUND_INDEX];
5210 if (face_attr_equal_p (fg, def_fg))
5211 return 0; /* same as default */
5212 else if (! tty_lookup_color (f, fg, &fg_tty_color, &fg_std_color))
5213 return 0; /* not a valid color */
5214 else if (color_distance (&fg_tty_color, &fg_std_color)
5215 > TTY_SAME_COLOR_THRESHOLD)
5216 return 0; /* displayed color is too different */
5217 else
5218 /* Make sure the color is really different than the default. */
5220 XColor def_fg_color;
5221 if (tty_lookup_color (f, def_fg, &def_fg_color, 0)
5222 && (color_distance (&fg_tty_color, &def_fg_color)
5223 <= TTY_SAME_COLOR_THRESHOLD))
5224 return 0;
5228 /* Check if background color is close enough. */
5229 bg = attrs[LFACE_BACKGROUND_INDEX];
5230 if (STRINGP (bg))
5232 Lisp_Object def_bg = def_attrs[LFACE_BACKGROUND_INDEX];
5234 if (face_attr_equal_p (bg, def_bg))
5235 return 0; /* same as default */
5236 else if (! tty_lookup_color (f, bg, &bg_tty_color, &bg_std_color))
5237 return 0; /* not a valid color */
5238 else if (color_distance (&bg_tty_color, &bg_std_color)
5239 > TTY_SAME_COLOR_THRESHOLD)
5240 return 0; /* displayed color is too different */
5241 else
5242 /* Make sure the color is really different than the default. */
5244 XColor def_bg_color;
5245 if (tty_lookup_color (f, def_bg, &def_bg_color, 0)
5246 && (color_distance (&bg_tty_color, &def_bg_color)
5247 <= TTY_SAME_COLOR_THRESHOLD))
5248 return 0;
5252 /* If both foreground and background are requested, see if the
5253 distance between them is OK. We just check to see if the distance
5254 between the tty's foreground and background is close enough to the
5255 distance between the standard foreground and background. */
5256 if (STRINGP (fg) && STRINGP (bg))
5258 int delta_delta
5259 = (color_distance (&fg_std_color, &bg_std_color)
5260 - color_distance (&fg_tty_color, &bg_tty_color));
5261 if (delta_delta > TTY_SAME_COLOR_THRESHOLD
5262 || delta_delta < -TTY_SAME_COLOR_THRESHOLD)
5263 return 0;
5267 /* See if the capabilities we selected above are supported, with the
5268 given colors. */
5269 if (test_caps != 0 &&
5270 ! tty_capable_p (FRAME_TTY (f), test_caps, fg_tty_color.pixel, bg_tty_color.pixel))
5271 return 0;
5274 /* Hmmm, everything checks out, this terminal must support this face. */
5275 return 1;
5279 DEFUN ("display-supports-face-attributes-p",
5280 Fdisplay_supports_face_attributes_p, Sdisplay_supports_face_attributes_p,
5281 1, 2, 0,
5282 doc: /* Return non-nil if all the face attributes in ATTRIBUTES are supported.
5283 The optional argument DISPLAY can be a display name, a frame, or
5284 nil (meaning the selected frame's display).
5286 The definition of `supported' is somewhat heuristic, but basically means
5287 that a face containing all the attributes in ATTRIBUTES, when merged
5288 with the default face for display, can be represented in a way that's
5290 \(1) different in appearance than the default face, and
5291 \(2) `close in spirit' to what the attributes specify, if not exact.
5293 Point (2) implies that a `:weight black' attribute will be satisfied by
5294 any display that can display bold, and a `:foreground \"yellow\"' as long
5295 as it can display a yellowish color, but `:slant italic' will _not_ be
5296 satisfied by the tty display code's automatic substitution of a `dim'
5297 face for italic. */)
5298 (attributes, display)
5299 Lisp_Object attributes, display;
5301 int supports = 0, i;
5302 Lisp_Object frame;
5303 struct frame *f;
5304 struct face *def_face;
5305 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5307 if (noninteractive || !initialized)
5308 /* We may not be able to access low-level face information in batch
5309 mode, or before being dumped, and this function is not going to
5310 be very useful in those cases anyway, so just give up. */
5311 return Qnil;
5313 if (NILP (display))
5314 frame = selected_frame;
5315 else if (FRAMEP (display))
5316 frame = display;
5317 else
5319 /* Find any frame on DISPLAY. */
5320 Lisp_Object fl_tail;
5322 frame = Qnil;
5323 for (fl_tail = Vframe_list; CONSP (fl_tail); fl_tail = XCDR (fl_tail))
5325 frame = XCAR (fl_tail);
5326 if (!NILP (Fequal (Fcdr (Fassq (Qdisplay,
5327 XFRAME (frame)->param_alist)),
5328 display)))
5329 break;
5333 CHECK_LIVE_FRAME (frame);
5334 f = XFRAME (frame);
5336 for (i = 0; i < LFACE_VECTOR_SIZE; i++)
5337 attrs[i] = Qunspecified;
5338 merge_face_ref (f, attributes, attrs, 1, 0);
5340 def_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5341 if (def_face == NULL)
5343 if (! realize_basic_faces (f))
5344 error ("Cannot realize default face");
5345 def_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5346 if (def_face == NULL)
5347 abort (); /* realize_basic_faces must have set it up */
5350 /* Dispatch to the appropriate handler. */
5351 if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5352 supports = tty_supports_face_attributes_p (f, attrs, def_face);
5353 #ifdef HAVE_WINDOW_SYSTEM
5354 else
5355 supports = x_supports_face_attributes_p (f, attrs, def_face);
5356 #endif
5358 return supports ? Qt : Qnil;
5362 /***********************************************************************
5363 Font selection
5364 ***********************************************************************/
5366 DEFUN ("internal-set-font-selection-order",
5367 Finternal_set_font_selection_order,
5368 Sinternal_set_font_selection_order, 1, 1, 0,
5369 doc: /* Set font selection order for face font selection to ORDER.
5370 ORDER must be a list of length 4 containing the symbols `:width',
5371 `:height', `:weight', and `:slant'. Face attributes appearing
5372 first in ORDER are matched first, e.g. if `:height' appears before
5373 `:weight' in ORDER, font selection first tries to find a font with
5374 a suitable height, and then tries to match the font weight.
5375 Value is ORDER. */)
5376 (order)
5377 Lisp_Object order;
5379 Lisp_Object list;
5380 int i;
5381 int indices[DIM (font_sort_order)];
5383 CHECK_LIST (order);
5384 bzero (indices, sizeof indices);
5385 i = 0;
5387 for (list = order;
5388 CONSP (list) && i < DIM (indices);
5389 list = XCDR (list), ++i)
5391 Lisp_Object attr = XCAR (list);
5392 int xlfd;
5394 if (EQ (attr, QCwidth))
5395 xlfd = XLFD_SWIDTH;
5396 else if (EQ (attr, QCheight))
5397 xlfd = XLFD_POINT_SIZE;
5398 else if (EQ (attr, QCweight))
5399 xlfd = XLFD_WEIGHT;
5400 else if (EQ (attr, QCslant))
5401 xlfd = XLFD_SLANT;
5402 else
5403 break;
5405 if (indices[i] != 0)
5406 break;
5407 indices[i] = xlfd;
5410 if (!NILP (list) || i != DIM (indices))
5411 signal_error ("Invalid font sort order", order);
5412 for (i = 0; i < DIM (font_sort_order); ++i)
5413 if (indices[i] == 0)
5414 signal_error ("Invalid font sort order", order);
5416 if (bcmp (indices, font_sort_order, sizeof indices) != 0)
5418 bcopy (indices, font_sort_order, sizeof font_sort_order);
5419 free_all_realized_faces (Qnil);
5422 font_update_sort_order (font_sort_order);
5424 return Qnil;
5428 DEFUN ("internal-set-alternative-font-family-alist",
5429 Finternal_set_alternative_font_family_alist,
5430 Sinternal_set_alternative_font_family_alist, 1, 1, 0,
5431 doc: /* Define alternative font families to try in face font selection.
5432 ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5433 Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can
5434 be found. Value is ALIST. */)
5435 (alist)
5436 Lisp_Object alist;
5438 Lisp_Object entry, tail, tail2;
5440 CHECK_LIST (alist);
5441 alist = Fcopy_sequence (alist);
5442 for (tail = alist; CONSP (tail); tail = XCDR (tail))
5444 entry = XCAR (tail);
5445 CHECK_LIST (entry);
5446 entry = Fcopy_sequence (entry);
5447 XSETCAR (tail, entry);
5448 for (tail2 = entry; CONSP (tail2); tail2 = XCDR (tail2))
5449 XSETCAR (tail2, Fintern (XCAR (tail2), Qnil));
5452 Vface_alternative_font_family_alist = alist;
5453 free_all_realized_faces (Qnil);
5454 return alist;
5458 DEFUN ("internal-set-alternative-font-registry-alist",
5459 Finternal_set_alternative_font_registry_alist,
5460 Sinternal_set_alternative_font_registry_alist, 1, 1, 0,
5461 doc: /* Define alternative font registries to try in face font selection.
5462 ALIST is an alist of (REGISTRY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5463 Each ALTERNATIVE is tried in order if no fonts of font registry REGISTRY can
5464 be found. Value is ALIST. */)
5465 (alist)
5466 Lisp_Object alist;
5468 Lisp_Object entry, tail, tail2;
5470 CHECK_LIST (alist);
5471 alist = Fcopy_sequence (alist);
5472 for (tail = alist; CONSP (tail); tail = XCDR (tail))
5474 entry = XCAR (tail);
5475 CHECK_LIST (entry);
5476 entry = Fcopy_sequence (entry);
5477 XSETCAR (tail, entry);
5478 for (tail2 = entry; CONSP (tail2); tail2 = XCDR (tail2))
5479 XSETCAR (tail2, Fdowncase (XCAR (tail2)));
5481 Vface_alternative_font_registry_alist = alist;
5482 free_all_realized_faces (Qnil);
5483 return alist;
5487 #ifdef HAVE_WINDOW_SYSTEM
5489 /* Ignore the difference of font point size less than this value. */
5491 #define FONT_POINT_SIZE_QUANTUM 5
5493 /* Return the fontset id of the base fontset name or alias name given
5494 by the fontset attribute of ATTRS. Value is -1 if the fontset
5495 attribute of ATTRS doesn't name a fontset. */
5497 static int
5498 face_fontset (attrs)
5499 Lisp_Object *attrs;
5501 Lisp_Object name;
5503 name = attrs[LFACE_FONTSET_INDEX];
5504 if (!STRINGP (name))
5505 return -1;
5506 return fs_query_fontset (name, 0);
5509 #endif /* HAVE_WINDOW_SYSTEM */
5513 /***********************************************************************
5514 Face Realization
5515 ***********************************************************************/
5517 /* Realize basic faces on frame F. Value is zero if frame parameters
5518 of F don't contain enough information needed to realize the default
5519 face. */
5521 static int
5522 realize_basic_faces (f)
5523 struct frame *f;
5525 int success_p = 0;
5526 int count = SPECPDL_INDEX ();
5528 /* Block input here so that we won't be surprised by an X expose
5529 event, for instance, without having the faces set up. */
5530 BLOCK_INPUT;
5531 specbind (Qscalable_fonts_allowed, Qt);
5533 if (realize_default_face (f))
5535 realize_named_face (f, Qmode_line, MODE_LINE_FACE_ID);
5536 realize_named_face (f, Qmode_line_inactive, MODE_LINE_INACTIVE_FACE_ID);
5537 realize_named_face (f, Qtool_bar, TOOL_BAR_FACE_ID);
5538 realize_named_face (f, Qfringe, FRINGE_FACE_ID);
5539 realize_named_face (f, Qheader_line, HEADER_LINE_FACE_ID);
5540 realize_named_face (f, Qscroll_bar, SCROLL_BAR_FACE_ID);
5541 realize_named_face (f, Qborder, BORDER_FACE_ID);
5542 realize_named_face (f, Qcursor, CURSOR_FACE_ID);
5543 realize_named_face (f, Qmouse, MOUSE_FACE_ID);
5544 realize_named_face (f, Qmenu, MENU_FACE_ID);
5545 realize_named_face (f, Qvertical_border, VERTICAL_BORDER_FACE_ID);
5547 /* Reflect changes in the `menu' face in menu bars. */
5548 if (FRAME_FACE_CACHE (f)->menu_face_changed_p)
5550 FRAME_FACE_CACHE (f)->menu_face_changed_p = 0;
5551 #ifdef USE_X_TOOLKIT
5552 if (FRAME_WINDOW_P (f))
5553 x_update_menu_appearance (f);
5554 #endif
5557 success_p = 1;
5560 unbind_to (count, Qnil);
5561 UNBLOCK_INPUT;
5562 return success_p;
5566 /* Realize the default face on frame F. If the face is not fully
5567 specified, make it fully-specified. Attributes of the default face
5568 that are not explicitly specified are taken from frame parameters. */
5570 static int
5571 realize_default_face (f)
5572 struct frame *f;
5574 struct face_cache *c = FRAME_FACE_CACHE (f);
5575 Lisp_Object lface;
5576 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5577 struct face *face;
5579 /* If the `default' face is not yet known, create it. */
5580 lface = lface_from_face_name (f, Qdefault, 0);
5581 if (NILP (lface))
5583 Lisp_Object frame;
5584 XSETFRAME (frame, f);
5585 lface = Finternal_make_lisp_face (Qdefault, frame);
5588 #ifdef HAVE_WINDOW_SYSTEM
5589 if (FRAME_WINDOW_P (f))
5591 Lisp_Object font_object;
5593 XSETFONT (font_object, FRAME_FONT (f));
5594 set_lface_from_font (f, lface, font_object, f->default_face_done_p);
5595 LFACE_FONTSET (lface) = fontset_name (FRAME_FONTSET (f));
5596 f->default_face_done_p = 1;
5598 #endif /* HAVE_WINDOW_SYSTEM */
5600 if (!FRAME_WINDOW_P (f))
5602 LFACE_FAMILY (lface) = build_string ("default");
5603 LFACE_FOUNDRY (lface) = LFACE_FAMILY (lface);
5604 LFACE_SWIDTH (lface) = Qnormal;
5605 LFACE_HEIGHT (lface) = make_number (1);
5606 if (UNSPECIFIEDP (LFACE_WEIGHT (lface)))
5607 LFACE_WEIGHT (lface) = Qnormal;
5608 if (UNSPECIFIEDP (LFACE_SLANT (lface)))
5609 LFACE_SLANT (lface) = Qnormal;
5610 if (UNSPECIFIEDP (LFACE_FONTSET (lface)))
5611 LFACE_FONTSET (lface) = Qnil;
5614 if (UNSPECIFIEDP (LFACE_UNDERLINE (lface)))
5615 LFACE_UNDERLINE (lface) = Qnil;
5617 if (UNSPECIFIEDP (LFACE_OVERLINE (lface)))
5618 LFACE_OVERLINE (lface) = Qnil;
5620 if (UNSPECIFIEDP (LFACE_STRIKE_THROUGH (lface)))
5621 LFACE_STRIKE_THROUGH (lface) = Qnil;
5623 if (UNSPECIFIEDP (LFACE_BOX (lface)))
5624 LFACE_BOX (lface) = Qnil;
5626 if (UNSPECIFIEDP (LFACE_INVERSE (lface)))
5627 LFACE_INVERSE (lface) = Qnil;
5629 if (UNSPECIFIEDP (LFACE_FOREGROUND (lface)))
5631 /* This function is called so early that colors are not yet
5632 set in the frame parameter list. */
5633 Lisp_Object color = Fassq (Qforeground_color, f->param_alist);
5635 if (CONSP (color) && STRINGP (XCDR (color)))
5636 LFACE_FOREGROUND (lface) = XCDR (color);
5637 else if (FRAME_WINDOW_P (f))
5638 return 0;
5639 else if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5640 LFACE_FOREGROUND (lface) = build_string (unspecified_fg);
5641 else
5642 abort ();
5645 if (UNSPECIFIEDP (LFACE_BACKGROUND (lface)))
5647 /* This function is called so early that colors are not yet
5648 set in the frame parameter list. */
5649 Lisp_Object color = Fassq (Qbackground_color, f->param_alist);
5650 if (CONSP (color) && STRINGP (XCDR (color)))
5651 LFACE_BACKGROUND (lface) = XCDR (color);
5652 else if (FRAME_WINDOW_P (f))
5653 return 0;
5654 else if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5655 LFACE_BACKGROUND (lface) = build_string (unspecified_bg);
5656 else
5657 abort ();
5660 if (UNSPECIFIEDP (LFACE_STIPPLE (lface)))
5661 LFACE_STIPPLE (lface) = Qnil;
5663 /* Realize the face; it must be fully-specified now. */
5664 xassert (lface_fully_specified_p (XVECTOR (lface)->contents));
5665 check_lface (lface);
5666 bcopy (XVECTOR (lface)->contents, attrs, sizeof attrs);
5667 face = realize_face (c, attrs, DEFAULT_FACE_ID);
5669 #ifdef HAVE_WINDOW_SYSTEM
5670 #ifdef HAVE_X_WINDOWS
5671 if (FRAME_X_P (f) && face->font != FRAME_FONT (f))
5673 /* This can happen when making a frame on a display that does
5674 not support the default font. */
5675 if (!face->font)
5676 return 0;
5678 /* Otherwise, the font specified for the frame was not
5679 acceptable as a font for the default face (perhaps because
5680 auto-scaled fonts are rejected), so we must adjust the frame
5681 font. */
5682 x_set_font (f, LFACE_FONT (lface), Qnil);
5684 #endif /* HAVE_X_WINDOWS */
5685 #endif /* HAVE_WINDOW_SYSTEM */
5686 return 1;
5690 /* Realize basic faces other than the default face in face cache C.
5691 SYMBOL is the face name, ID is the face id the realized face must
5692 have. The default face must have been realized already. */
5694 static void
5695 realize_named_face (f, symbol, id)
5696 struct frame *f;
5697 Lisp_Object symbol;
5698 int id;
5700 struct face_cache *c = FRAME_FACE_CACHE (f);
5701 Lisp_Object lface = lface_from_face_name (f, symbol, 0);
5702 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5703 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
5704 struct face *new_face;
5706 /* The default face must exist and be fully specified. */
5707 get_lface_attributes_no_remap (f, Qdefault, attrs, 1);
5708 check_lface_attrs (attrs);
5709 xassert (lface_fully_specified_p (attrs));
5711 /* If SYMBOL isn't know as a face, create it. */
5712 if (NILP (lface))
5714 Lisp_Object frame;
5715 XSETFRAME (frame, f);
5716 lface = Finternal_make_lisp_face (symbol, frame);
5719 /* Merge SYMBOL's face with the default face. */
5720 get_lface_attributes_no_remap (f, symbol, symbol_attrs, 1);
5721 merge_face_vectors (f, symbol_attrs, attrs, 0);
5723 /* Realize the face. */
5724 new_face = realize_face (c, attrs, id);
5728 /* Realize the fully-specified face with attributes ATTRS in face
5729 cache CACHE for ASCII characters. If FORMER_FACE_ID is
5730 non-negative, it is an ID of face to remove before caching the new
5731 face. Value is a pointer to the newly created realized face. */
5733 static struct face *
5734 realize_face (cache, attrs, former_face_id)
5735 struct face_cache *cache;
5736 Lisp_Object *attrs;
5737 int former_face_id;
5739 struct face *face;
5741 /* LFACE must be fully specified. */
5742 xassert (cache != NULL);
5743 check_lface_attrs (attrs);
5745 if (former_face_id >= 0 && cache->used > former_face_id)
5747 /* Remove the former face. */
5748 struct face *former_face = cache->faces_by_id[former_face_id];
5749 uncache_face (cache, former_face);
5750 free_realized_face (cache->f, former_face);
5753 if (FRAME_WINDOW_P (cache->f))
5754 face = realize_x_face (cache, attrs);
5755 else if (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f))
5756 face = realize_tty_face (cache, attrs);
5757 else if (FRAME_INITIAL_P (cache->f))
5759 /* Create a dummy face. */
5760 face = make_realized_face (attrs);
5762 else
5763 abort ();
5765 /* Insert the new face. */
5766 cache_face (cache, face, lface_hash (attrs));
5767 return face;
5771 #ifdef HAVE_WINDOW_SYSTEM
5772 /* Realize the fully-specified face that uses FONT-OBJECT and has the
5773 same attributes as BASE_FACE except for the font on frame F.
5774 FONT-OBJECT may be nil, in which case, realized a face of
5775 no-font. */
5777 static struct face *
5778 realize_non_ascii_face (f, font_object, base_face)
5779 struct frame *f;
5780 Lisp_Object font_object;
5781 struct face *base_face;
5783 struct face_cache *cache = FRAME_FACE_CACHE (f);
5784 struct face *face;
5786 face = (struct face *) xmalloc (sizeof *face);
5787 *face = *base_face;
5788 face->gc = 0;
5789 face->extra = NULL;
5790 face->overstrike
5791 = (! NILP (font_object)
5792 && FONT_WEIGHT_NAME_NUMERIC (face->lface[LFACE_WEIGHT_INDEX]) > 100
5793 && FONT_WEIGHT_NUMERIC (font_object) <= 100);
5795 /* Don't try to free the colors copied bitwise from BASE_FACE. */
5796 face->colors_copied_bitwise_p = 1;
5797 face->font = NILP (font_object) ? NULL : XFONT_OBJECT (font_object);
5798 face->gc = 0;
5800 cache_face (cache, face, face->hash);
5802 return face;
5804 #endif /* HAVE_WINDOW_SYSTEM */
5807 /* Realize the fully-specified face with attributes ATTRS in face
5808 cache CACHE for ASCII characters. Do it for X frame CACHE->f. If
5809 the new face doesn't share font with the default face, a fontname
5810 is allocated from the heap and set in `font_name' of the new face,
5811 but it is not yet loaded here. Value is a pointer to the newly
5812 created realized face. */
5814 static struct face *
5815 realize_x_face (cache, attrs)
5816 struct face_cache *cache;
5817 Lisp_Object *attrs;
5819 struct face *face = NULL;
5820 #ifdef HAVE_WINDOW_SYSTEM
5821 struct face *default_face;
5822 struct frame *f;
5823 Lisp_Object stipple, overline, strike_through, box;
5825 xassert (FRAME_WINDOW_P (cache->f));
5827 /* Allocate a new realized face. */
5828 face = make_realized_face (attrs);
5829 face->ascii_face = face;
5831 f = cache->f;
5833 /* Determine the font to use. Most of the time, the font will be
5834 the same as the font of the default face, so try that first. */
5835 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5836 if (default_face
5837 && lface_same_font_attributes_p (default_face->lface, attrs))
5839 face->font = default_face->font;
5840 face->fontset
5841 = make_fontset_for_ascii_face (f, default_face->fontset, face);
5843 else
5845 /* If the face attribute ATTRS specifies a fontset, use it as
5846 the base of a new realized fontset. Otherwise, use the same
5847 base fontset as of the default face. The base determines
5848 registry and encoding of a font. It may also determine
5849 foundry and family. The other fields of font name pattern
5850 are constructed from ATTRS. */
5851 int fontset = face_fontset (attrs);
5853 /* If we are realizing the default face, ATTRS should specify a
5854 fontset. In other words, if FONTSET is -1, we are not
5855 realizing the default face, thus the default face should have
5856 already been realized. */
5857 if (fontset == -1)
5859 if (default_face)
5860 fontset = default_face->fontset;
5861 if (fontset == -1)
5862 abort ();
5864 if (! FONT_OBJECT_P (attrs[LFACE_FONT_INDEX]))
5865 attrs[LFACE_FONT_INDEX]
5866 = font_load_for_lface (f, attrs, attrs[LFACE_FONT_INDEX]);
5867 if (FONT_OBJECT_P (attrs[LFACE_FONT_INDEX]))
5869 face->font = XFONT_OBJECT (attrs[LFACE_FONT_INDEX]);
5870 face->fontset = make_fontset_for_ascii_face (f, fontset, face);
5872 else
5874 face->font = NULL;
5875 face->fontset = -1;
5879 if (face->font
5880 && FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]) > 100
5881 && FONT_WEIGHT_NUMERIC (attrs[LFACE_FONT_INDEX]) <= 100)
5882 face->overstrike = 1;
5884 /* Load colors, and set remaining attributes. */
5886 load_face_colors (f, face, attrs);
5888 /* Set up box. */
5889 box = attrs[LFACE_BOX_INDEX];
5890 if (STRINGP (box))
5892 /* A simple box of line width 1 drawn in color given by
5893 the string. */
5894 face->box_color = load_color (f, face, attrs[LFACE_BOX_INDEX],
5895 LFACE_BOX_INDEX);
5896 face->box = FACE_SIMPLE_BOX;
5897 face->box_line_width = 1;
5899 else if (INTEGERP (box))
5901 /* Simple box of specified line width in foreground color of the
5902 face. */
5903 xassert (XINT (box) != 0);
5904 face->box = FACE_SIMPLE_BOX;
5905 face->box_line_width = XINT (box);
5906 face->box_color = face->foreground;
5907 face->box_color_defaulted_p = 1;
5909 else if (CONSP (box))
5911 /* `(:width WIDTH :color COLOR :shadow SHADOW)'. SHADOW
5912 being one of `raised' or `sunken'. */
5913 face->box = FACE_SIMPLE_BOX;
5914 face->box_color = face->foreground;
5915 face->box_color_defaulted_p = 1;
5916 face->box_line_width = 1;
5918 while (CONSP (box))
5920 Lisp_Object keyword, value;
5922 keyword = XCAR (box);
5923 box = XCDR (box);
5925 if (!CONSP (box))
5926 break;
5927 value = XCAR (box);
5928 box = XCDR (box);
5930 if (EQ (keyword, QCline_width))
5932 if (INTEGERP (value) && XINT (value) != 0)
5933 face->box_line_width = XINT (value);
5935 else if (EQ (keyword, QCcolor))
5937 if (STRINGP (value))
5939 face->box_color = load_color (f, face, value,
5940 LFACE_BOX_INDEX);
5941 face->use_box_color_for_shadows_p = 1;
5944 else if (EQ (keyword, QCstyle))
5946 if (EQ (value, Qreleased_button))
5947 face->box = FACE_RAISED_BOX;
5948 else if (EQ (value, Qpressed_button))
5949 face->box = FACE_SUNKEN_BOX;
5954 /* Text underline, overline, strike-through. */
5956 if (EQ (attrs[LFACE_UNDERLINE_INDEX], Qt))
5958 /* Use default color (same as foreground color). */
5959 face->underline_p = 1;
5960 face->underline_defaulted_p = 1;
5961 face->underline_color = 0;
5963 else if (STRINGP (attrs[LFACE_UNDERLINE_INDEX]))
5965 /* Use specified color. */
5966 face->underline_p = 1;
5967 face->underline_defaulted_p = 0;
5968 face->underline_color
5969 = load_color (f, face, attrs[LFACE_UNDERLINE_INDEX],
5970 LFACE_UNDERLINE_INDEX);
5972 else if (NILP (attrs[LFACE_UNDERLINE_INDEX]))
5974 face->underline_p = 0;
5975 face->underline_defaulted_p = 0;
5976 face->underline_color = 0;
5979 overline = attrs[LFACE_OVERLINE_INDEX];
5980 if (STRINGP (overline))
5982 face->overline_color
5983 = load_color (f, face, attrs[LFACE_OVERLINE_INDEX],
5984 LFACE_OVERLINE_INDEX);
5985 face->overline_p = 1;
5987 else if (EQ (overline, Qt))
5989 face->overline_color = face->foreground;
5990 face->overline_color_defaulted_p = 1;
5991 face->overline_p = 1;
5994 strike_through = attrs[LFACE_STRIKE_THROUGH_INDEX];
5995 if (STRINGP (strike_through))
5997 face->strike_through_color
5998 = load_color (f, face, attrs[LFACE_STRIKE_THROUGH_INDEX],
5999 LFACE_STRIKE_THROUGH_INDEX);
6000 face->strike_through_p = 1;
6002 else if (EQ (strike_through, Qt))
6004 face->strike_through_color = face->foreground;
6005 face->strike_through_color_defaulted_p = 1;
6006 face->strike_through_p = 1;
6009 stipple = attrs[LFACE_STIPPLE_INDEX];
6010 if (!NILP (stipple))
6011 face->stipple = load_pixmap (f, stipple, &face->pixmap_w, &face->pixmap_h);
6012 #endif /* HAVE_WINDOW_SYSTEM */
6014 return face;
6018 /* Map a specified color of face FACE on frame F to a tty color index.
6019 IDX is either LFACE_FOREGROUND_INDEX or LFACE_BACKGROUND_INDEX, and
6020 specifies which color to map. Set *DEFAULTED to 1 if mapping to the
6021 default foreground/background colors. */
6023 static void
6024 map_tty_color (f, face, idx, defaulted)
6025 struct frame *f;
6026 struct face *face;
6027 enum lface_attribute_index idx;
6028 int *defaulted;
6030 Lisp_Object frame, color, def;
6031 int foreground_p = idx == LFACE_FOREGROUND_INDEX;
6032 unsigned long default_pixel, default_other_pixel, pixel;
6034 xassert (idx == LFACE_FOREGROUND_INDEX || idx == LFACE_BACKGROUND_INDEX);
6036 if (foreground_p)
6038 pixel = default_pixel = FACE_TTY_DEFAULT_FG_COLOR;
6039 default_other_pixel = FACE_TTY_DEFAULT_BG_COLOR;
6041 else
6043 pixel = default_pixel = FACE_TTY_DEFAULT_BG_COLOR;
6044 default_other_pixel = FACE_TTY_DEFAULT_FG_COLOR;
6047 XSETFRAME (frame, f);
6048 color = face->lface[idx];
6050 if (STRINGP (color)
6051 && SCHARS (color)
6052 && CONSP (Vtty_defined_color_alist)
6053 && (def = assq_no_quit (color, call1 (Qtty_color_alist, frame)),
6054 CONSP (def)))
6056 /* Associations in tty-defined-color-alist are of the form
6057 (NAME INDEX R G B). We need the INDEX part. */
6058 pixel = XINT (XCAR (XCDR (def)));
6061 if (pixel == default_pixel && STRINGP (color))
6063 pixel = load_color (f, face, color, idx);
6065 #ifdef MSDOS
6066 /* If the foreground of the default face is the default color,
6067 use the foreground color defined by the frame. */
6068 if (FRAME_MSDOS_P (f))
6070 if (pixel == default_pixel
6071 || pixel == FACE_TTY_DEFAULT_COLOR)
6073 if (foreground_p)
6074 pixel = FRAME_FOREGROUND_PIXEL (f);
6075 else
6076 pixel = FRAME_BACKGROUND_PIXEL (f);
6077 face->lface[idx] = tty_color_name (f, pixel);
6078 *defaulted = 1;
6080 else if (pixel == default_other_pixel)
6082 if (foreground_p)
6083 pixel = FRAME_BACKGROUND_PIXEL (f);
6084 else
6085 pixel = FRAME_FOREGROUND_PIXEL (f);
6086 face->lface[idx] = tty_color_name (f, pixel);
6087 *defaulted = 1;
6090 #endif /* MSDOS */
6093 if (foreground_p)
6094 face->foreground = pixel;
6095 else
6096 face->background = pixel;
6100 /* Realize the fully-specified face with attributes ATTRS in face
6101 cache CACHE for ASCII characters. Do it for TTY frame CACHE->f.
6102 Value is a pointer to the newly created realized face. */
6104 static struct face *
6105 realize_tty_face (cache, attrs)
6106 struct face_cache *cache;
6107 Lisp_Object *attrs;
6109 struct face *face;
6110 int weight, slant;
6111 int face_colors_defaulted = 0;
6112 struct frame *f = cache->f;
6114 /* Frame must be a termcap frame. */
6115 xassert (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f));
6117 /* Allocate a new realized face. */
6118 face = make_realized_face (attrs);
6119 #if 0
6120 face->font_name = FRAME_MSDOS_P (cache->f) ? "ms-dos" : "tty";
6121 #endif
6123 /* Map face attributes to TTY appearances. We map slant to
6124 dimmed text because we want italic text to appear differently
6125 and because dimmed text is probably used infrequently. */
6126 weight = FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]);
6127 slant = FONT_SLANT_NAME_NUMERIC (attrs[LFACE_SLANT_INDEX]);
6128 if (weight > 100)
6129 face->tty_bold_p = 1;
6130 if (weight < 100 || slant != 100)
6131 face->tty_dim_p = 1;
6132 if (!NILP (attrs[LFACE_UNDERLINE_INDEX]))
6133 face->tty_underline_p = 1;
6134 if (!NILP (attrs[LFACE_INVERSE_INDEX]))
6135 face->tty_reverse_p = 1;
6137 /* Map color names to color indices. */
6138 map_tty_color (f, face, LFACE_FOREGROUND_INDEX, &face_colors_defaulted);
6139 map_tty_color (f, face, LFACE_BACKGROUND_INDEX, &face_colors_defaulted);
6141 /* Swap colors if face is inverse-video. If the colors are taken
6142 from the frame colors, they are already inverted, since the
6143 frame-creation function calls x-handle-reverse-video. */
6144 if (face->tty_reverse_p && !face_colors_defaulted)
6146 unsigned long tem = face->foreground;
6147 face->foreground = face->background;
6148 face->background = tem;
6151 if (tty_suppress_bold_inverse_default_colors_p
6152 && face->tty_bold_p
6153 && face->background == FACE_TTY_DEFAULT_FG_COLOR
6154 && face->foreground == FACE_TTY_DEFAULT_BG_COLOR)
6155 face->tty_bold_p = 0;
6157 return face;
6161 DEFUN ("tty-suppress-bold-inverse-default-colors",
6162 Ftty_suppress_bold_inverse_default_colors,
6163 Stty_suppress_bold_inverse_default_colors, 1, 1, 0,
6164 doc: /* Suppress/allow boldness of faces with inverse default colors.
6165 SUPPRESS non-nil means suppress it.
6166 This affects bold faces on TTYs whose foreground is the default background
6167 color of the display and whose background is the default foreground color.
6168 For such faces, the bold face attribute is ignored if this variable
6169 is non-nil. */)
6170 (suppress)
6171 Lisp_Object suppress;
6173 tty_suppress_bold_inverse_default_colors_p = !NILP (suppress);
6174 ++face_change_count;
6175 return suppress;
6180 /***********************************************************************
6181 Computing Faces
6182 ***********************************************************************/
6184 /* Return the ID of the face to use to display character CH with face
6185 property PROP on frame F in current_buffer. */
6188 compute_char_face (f, ch, prop)
6189 struct frame *f;
6190 int ch;
6191 Lisp_Object prop;
6193 int face_id;
6195 if (NILP (current_buffer->enable_multibyte_characters))
6196 ch = 0;
6198 if (NILP (prop))
6200 struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6201 face_id = FACE_FOR_CHAR (f, face, ch, -1, Qnil);
6203 else
6205 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6206 struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6207 bcopy (default_face->lface, attrs, sizeof attrs);
6208 merge_face_ref (f, prop, attrs, 1, 0);
6209 face_id = lookup_face (f, attrs);
6212 return face_id;
6215 /* Return the face ID associated with buffer position POS for
6216 displaying ASCII characters. Return in *ENDPTR the position at
6217 which a different face is needed, as far as text properties and
6218 overlays are concerned. W is a window displaying current_buffer.
6220 REGION_BEG, REGION_END delimit the region, so it can be
6221 highlighted.
6223 LIMIT is a position not to scan beyond. That is to limit the time
6224 this function can take.
6226 If MOUSE is non-zero, use the character's mouse-face, not its face.
6228 The face returned is suitable for displaying ASCII characters. */
6231 face_at_buffer_position (w, pos, region_beg, region_end,
6232 endptr, limit, mouse)
6233 struct window *w;
6234 EMACS_INT pos;
6235 EMACS_INT region_beg, region_end;
6236 EMACS_INT *endptr;
6237 EMACS_INT limit;
6238 int mouse;
6240 struct frame *f = XFRAME (w->frame);
6241 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6242 Lisp_Object prop, position;
6243 int i, noverlays;
6244 Lisp_Object *overlay_vec;
6245 Lisp_Object frame;
6246 EMACS_INT endpos;
6247 Lisp_Object propname = mouse ? Qmouse_face : Qface;
6248 Lisp_Object limit1, end;
6249 struct face *default_face;
6251 /* W must display the current buffer. We could write this function
6252 to use the frame and buffer of W, but right now it doesn't. */
6253 /* xassert (XBUFFER (w->buffer) == current_buffer); */
6255 XSETFRAME (frame, f);
6256 XSETFASTINT (position, pos);
6258 endpos = ZV;
6259 if (pos < region_beg && region_beg < endpos)
6260 endpos = region_beg;
6262 /* Get the `face' or `mouse_face' text property at POS, and
6263 determine the next position at which the property changes. */
6264 prop = Fget_text_property (position, propname, w->buffer);
6265 XSETFASTINT (limit1, (limit < endpos ? limit : endpos));
6266 end = Fnext_single_property_change (position, propname, w->buffer, limit1);
6267 if (INTEGERP (end))
6268 endpos = XINT (end);
6270 /* Look at properties from overlays. */
6272 EMACS_INT next_overlay;
6274 GET_OVERLAYS_AT (pos, overlay_vec, noverlays, &next_overlay, 0);
6275 if (next_overlay < endpos)
6276 endpos = next_overlay;
6279 *endptr = endpos;
6282 /* Perhaps remap BASE_FACE_ID to a user-specified alternative. */
6283 if (NILP (Vface_remapping_alist))
6284 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6285 else
6286 default_face = FACE_FROM_ID (f, lookup_basic_face (f, DEFAULT_FACE_ID));
6288 /* Optimize common cases where we can use the default face. */
6289 if (noverlays == 0
6290 && NILP (prop)
6291 && !(pos >= region_beg && pos < region_end))
6292 return default_face->id;
6294 /* Begin with attributes from the default face. */
6295 bcopy (default_face->lface, attrs, sizeof attrs);
6297 /* Merge in attributes specified via text properties. */
6298 if (!NILP (prop))
6299 merge_face_ref (f, prop, attrs, 1, 0);
6301 /* Now merge the overlay data. */
6302 noverlays = sort_overlays (overlay_vec, noverlays, w);
6303 for (i = 0; i < noverlays; i++)
6305 Lisp_Object oend;
6306 int oendpos;
6308 prop = Foverlay_get (overlay_vec[i], propname);
6309 if (!NILP (prop))
6310 merge_face_ref (f, prop, attrs, 1, 0);
6312 oend = OVERLAY_END (overlay_vec[i]);
6313 oendpos = OVERLAY_POSITION (oend);
6314 if (oendpos < endpos)
6315 endpos = oendpos;
6318 /* If in the region, merge in the region face. */
6319 if (pos >= region_beg && pos < region_end)
6321 merge_named_face (f, Qregion, attrs, 0);
6323 if (region_end < endpos)
6324 endpos = region_end;
6327 *endptr = endpos;
6329 /* Look up a realized face with the given face attributes,
6330 or realize a new one for ASCII characters. */
6331 return lookup_face (f, attrs);
6334 /* Return the face ID at buffer position POS for displaying ASCII
6335 characters associated with overlay strings for overlay OVERLAY.
6337 Like face_at_buffer_position except for OVERLAY. Currently it
6338 simply disregards the `face' properties of all overlays. */
6341 face_for_overlay_string (w, pos, region_beg, region_end,
6342 endptr, limit, mouse, overlay)
6343 struct window *w;
6344 EMACS_INT pos;
6345 EMACS_INT region_beg, region_end;
6346 EMACS_INT *endptr;
6347 EMACS_INT limit;
6348 int mouse;
6349 Lisp_Object overlay;
6351 struct frame *f = XFRAME (w->frame);
6352 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6353 Lisp_Object prop, position;
6354 Lisp_Object frame;
6355 int endpos;
6356 Lisp_Object propname = mouse ? Qmouse_face : Qface;
6357 Lisp_Object limit1, end;
6358 struct face *default_face;
6360 /* W must display the current buffer. We could write this function
6361 to use the frame and buffer of W, but right now it doesn't. */
6362 /* xassert (XBUFFER (w->buffer) == current_buffer); */
6364 XSETFRAME (frame, f);
6365 XSETFASTINT (position, pos);
6367 endpos = ZV;
6368 if (pos < region_beg && region_beg < endpos)
6369 endpos = region_beg;
6371 /* Get the `face' or `mouse_face' text property at POS, and
6372 determine the next position at which the property changes. */
6373 prop = Fget_text_property (position, propname, w->buffer);
6374 XSETFASTINT (limit1, (limit < endpos ? limit : endpos));
6375 end = Fnext_single_property_change (position, propname, w->buffer, limit1);
6376 if (INTEGERP (end))
6377 endpos = XINT (end);
6379 *endptr = endpos;
6381 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6383 /* Optimize common cases where we can use the default face. */
6384 if (NILP (prop)
6385 && !(pos >= region_beg && pos < region_end))
6386 return DEFAULT_FACE_ID;
6388 /* Begin with attributes from the default face. */
6389 bcopy (default_face->lface, attrs, sizeof attrs);
6391 /* Merge in attributes specified via text properties. */
6392 if (!NILP (prop))
6393 merge_face_ref (f, prop, attrs, 1, 0);
6395 /* If in the region, merge in the region face. */
6396 if (pos >= region_beg && pos < region_end)
6398 merge_named_face (f, Qregion, attrs, 0);
6400 if (region_end < endpos)
6401 endpos = region_end;
6404 *endptr = endpos;
6406 /* Look up a realized face with the given face attributes,
6407 or realize a new one for ASCII characters. */
6408 return lookup_face (f, attrs);
6412 /* Compute the face at character position POS in Lisp string STRING on
6413 window W, for ASCII characters.
6415 If STRING is an overlay string, it comes from position BUFPOS in
6416 current_buffer, otherwise BUFPOS is zero to indicate that STRING is
6417 not an overlay string. W must display the current buffer.
6418 REGION_BEG and REGION_END give the start and end positions of the
6419 region; both are -1 if no region is visible.
6421 BASE_FACE_ID is the id of a face to merge with. For strings coming
6422 from overlays or the `display' property it is the face at BUFPOS.
6424 If MOUSE_P is non-zero, use the character's mouse-face, not its face.
6426 Set *ENDPTR to the next position where to check for faces in
6427 STRING; -1 if the face is constant from POS to the end of the
6428 string.
6430 Value is the id of the face to use. The face returned is suitable
6431 for displaying ASCII characters. */
6434 face_at_string_position (w, string, pos, bufpos, region_beg,
6435 region_end, endptr, base_face_id, mouse_p)
6436 struct window *w;
6437 Lisp_Object string;
6438 EMACS_INT pos, bufpos;
6439 EMACS_INT region_beg, region_end;
6440 EMACS_INT *endptr;
6441 enum face_id base_face_id;
6442 int mouse_p;
6444 Lisp_Object prop, position, end, limit;
6445 struct frame *f = XFRAME (WINDOW_FRAME (w));
6446 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6447 struct face *base_face;
6448 int multibyte_p = STRING_MULTIBYTE (string);
6449 Lisp_Object prop_name = mouse_p ? Qmouse_face : Qface;
6451 /* Get the value of the face property at the current position within
6452 STRING. Value is nil if there is no face property. */
6453 XSETFASTINT (position, pos);
6454 prop = Fget_text_property (position, prop_name, string);
6456 /* Get the next position at which to check for faces. Value of end
6457 is nil if face is constant all the way to the end of the string.
6458 Otherwise it is a string position where to check faces next.
6459 Limit is the maximum position up to which to check for property
6460 changes in Fnext_single_property_change. Strings are usually
6461 short, so set the limit to the end of the string. */
6462 XSETFASTINT (limit, SCHARS (string));
6463 end = Fnext_single_property_change (position, prop_name, string, limit);
6464 if (INTEGERP (end))
6465 *endptr = XFASTINT (end);
6466 else
6467 *endptr = -1;
6469 base_face = FACE_FROM_ID (f, base_face_id);
6470 xassert (base_face);
6472 /* Optimize the default case that there is no face property and we
6473 are not in the region. */
6474 if (NILP (prop)
6475 && (base_face_id != DEFAULT_FACE_ID
6476 /* BUFPOS <= 0 means STRING is not an overlay string, so
6477 that the region doesn't have to be taken into account. */
6478 || bufpos <= 0
6479 || bufpos < region_beg
6480 || bufpos >= region_end)
6481 && (multibyte_p
6482 /* We can't realize faces for different charsets differently
6483 if we don't have fonts, so we can stop here if not working
6484 on a window-system frame. */
6485 || !FRAME_WINDOW_P (f)
6486 || FACE_SUITABLE_FOR_CHAR_P (base_face, 0)))
6487 return base_face->id;
6489 /* Begin with attributes from the base face. */
6490 bcopy (base_face->lface, attrs, sizeof attrs);
6492 /* Merge in attributes specified via text properties. */
6493 if (!NILP (prop))
6494 merge_face_ref (f, prop, attrs, 1, 0);
6496 /* If in the region, merge in the region face. */
6497 if (bufpos
6498 && bufpos >= region_beg
6499 && bufpos < region_end)
6500 merge_named_face (f, Qregion, attrs, 0);
6502 /* Look up a realized face with the given face attributes,
6503 or realize a new one for ASCII characters. */
6504 return lookup_face (f, attrs);
6508 /* Merge a face into a realized face.
6510 F is frame where faces are (to be) realized.
6512 FACE_NAME is named face to merge.
6514 If FACE_NAME is nil, FACE_ID is face_id of realized face to merge.
6516 If FACE_NAME is t, FACE_ID is lface_id of face to merge.
6518 BASE_FACE_ID is realized face to merge into.
6520 Return new face id.
6524 merge_faces (f, face_name, face_id, base_face_id)
6525 struct frame *f;
6526 Lisp_Object face_name;
6527 int face_id, base_face_id;
6529 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6530 struct face *base_face;
6532 base_face = FACE_FROM_ID (f, base_face_id);
6533 if (!base_face)
6534 return base_face_id;
6536 if (EQ (face_name, Qt))
6538 if (face_id < 0 || face_id >= lface_id_to_name_size)
6539 return base_face_id;
6540 face_name = lface_id_to_name[face_id];
6541 /* When called during make-frame, lookup_derived_face may fail
6542 if the faces are uninitialized. Don't signal an error. */
6543 face_id = lookup_derived_face (f, face_name, base_face_id, 0);
6544 return (face_id >= 0 ? face_id : base_face_id);
6547 /* Begin with attributes from the base face. */
6548 bcopy (base_face->lface, attrs, sizeof attrs);
6550 if (!NILP (face_name))
6552 if (!merge_named_face (f, face_name, attrs, 0))
6553 return base_face_id;
6555 else
6557 struct face *face;
6558 if (face_id < 0)
6559 return base_face_id;
6560 face = FACE_FROM_ID (f, face_id);
6561 if (!face)
6562 return base_face_id;
6563 merge_face_vectors (f, face->lface, attrs, 0);
6566 /* Look up a realized face with the given face attributes,
6567 or realize a new one for ASCII characters. */
6568 return lookup_face (f, attrs);
6573 #ifndef HAVE_X_WINDOWS
6574 DEFUN ("x-load-color-file", Fx_load_color_file,
6575 Sx_load_color_file, 1, 1, 0,
6576 doc: /* Create an alist of color entries from an external file.
6578 The file should define one named RGB color per line like so:
6579 R G B name
6580 where R,G,B are numbers between 0 and 255 and name is an arbitrary string. */)
6581 (filename)
6582 Lisp_Object filename;
6584 FILE *fp;
6585 Lisp_Object cmap = Qnil;
6586 Lisp_Object abspath;
6588 CHECK_STRING (filename);
6589 abspath = Fexpand_file_name (filename, Qnil);
6591 fp = fopen (SDATA (filename), "rt");
6592 if (fp)
6594 char buf[512];
6595 int red, green, blue;
6596 int num;
6598 BLOCK_INPUT;
6600 while (fgets (buf, sizeof (buf), fp) != NULL) {
6601 if (sscanf (buf, "%u %u %u %n", &red, &green, &blue, &num) == 3)
6603 char *name = buf + num;
6604 num = strlen (name) - 1;
6605 if (name[num] == '\n')
6606 name[num] = 0;
6607 cmap = Fcons (Fcons (build_string (name),
6608 #ifdef WINDOWSNT
6609 make_number (RGB (red, green, blue))),
6610 #else
6611 make_number ((red << 16) | (green << 8) | blue)),
6612 #endif
6613 cmap);
6616 fclose (fp);
6618 UNBLOCK_INPUT;
6621 return cmap;
6623 #endif
6626 /***********************************************************************
6627 Tests
6628 ***********************************************************************/
6630 #if GLYPH_DEBUG
6632 /* Print the contents of the realized face FACE to stderr. */
6634 static void
6635 dump_realized_face (face)
6636 struct face *face;
6638 fprintf (stderr, "ID: %d\n", face->id);
6639 #ifdef HAVE_X_WINDOWS
6640 fprintf (stderr, "gc: %ld\n", (long) face->gc);
6641 #endif
6642 fprintf (stderr, "foreground: 0x%lx (%s)\n",
6643 face->foreground,
6644 SDATA (face->lface[LFACE_FOREGROUND_INDEX]));
6645 fprintf (stderr, "background: 0x%lx (%s)\n",
6646 face->background,
6647 SDATA (face->lface[LFACE_BACKGROUND_INDEX]));
6648 if (face->font)
6649 fprintf (stderr, "font_name: %s (%s)\n",
6650 SDATA (face->font->props[FONT_NAME_INDEX]),
6651 SDATA (face->lface[LFACE_FAMILY_INDEX]));
6652 #ifdef HAVE_X_WINDOWS
6653 fprintf (stderr, "font = %p\n", face->font);
6654 #endif
6655 fprintf (stderr, "fontset: %d\n", face->fontset);
6656 fprintf (stderr, "underline: %d (%s)\n",
6657 face->underline_p,
6658 SDATA (Fsymbol_name (face->lface[LFACE_UNDERLINE_INDEX])));
6659 fprintf (stderr, "hash: %d\n", face->hash);
6663 DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, doc: /* */)
6665 Lisp_Object n;
6667 if (NILP (n))
6669 int i;
6671 fprintf (stderr, "font selection order: ");
6672 for (i = 0; i < DIM (font_sort_order); ++i)
6673 fprintf (stderr, "%d ", font_sort_order[i]);
6674 fprintf (stderr, "\n");
6676 fprintf (stderr, "alternative fonts: ");
6677 debug_print (Vface_alternative_font_family_alist);
6678 fprintf (stderr, "\n");
6680 for (i = 0; i < FRAME_FACE_CACHE (SELECTED_FRAME ())->used; ++i)
6681 Fdump_face (make_number (i));
6683 else
6685 struct face *face;
6686 CHECK_NUMBER (n);
6687 face = FACE_FROM_ID (SELECTED_FRAME (), XINT (n));
6688 if (face == NULL)
6689 error ("Not a valid face");
6690 dump_realized_face (face);
6693 return Qnil;
6697 DEFUN ("show-face-resources", Fshow_face_resources, Sshow_face_resources,
6698 0, 0, 0, doc: /* */)
6701 fprintf (stderr, "number of colors = %d\n", ncolors_allocated);
6702 fprintf (stderr, "number of pixmaps = %d\n", npixmaps_allocated);
6703 fprintf (stderr, "number of GCs = %d\n", ngcs);
6704 return Qnil;
6707 #endif /* GLYPH_DEBUG != 0 */
6711 /***********************************************************************
6712 Initialization
6713 ***********************************************************************/
6715 void
6716 syms_of_xfaces ()
6718 Qface = intern ("face");
6719 staticpro (&Qface);
6720 Qface_no_inherit = intern ("face-no-inherit");
6721 staticpro (&Qface_no_inherit);
6722 Qbitmap_spec_p = intern ("bitmap-spec-p");
6723 staticpro (&Qbitmap_spec_p);
6724 Qframe_set_background_mode = intern ("frame-set-background-mode");
6725 staticpro (&Qframe_set_background_mode);
6727 /* Lisp face attribute keywords. */
6728 QCfamily = intern (":family");
6729 staticpro (&QCfamily);
6730 QCheight = intern (":height");
6731 staticpro (&QCheight);
6732 QCweight = intern (":weight");
6733 staticpro (&QCweight);
6734 QCslant = intern (":slant");
6735 staticpro (&QCslant);
6736 QCunderline = intern (":underline");
6737 staticpro (&QCunderline);
6738 QCinverse_video = intern (":inverse-video");
6739 staticpro (&QCinverse_video);
6740 QCreverse_video = intern (":reverse-video");
6741 staticpro (&QCreverse_video);
6742 QCforeground = intern (":foreground");
6743 staticpro (&QCforeground);
6744 QCbackground = intern (":background");
6745 staticpro (&QCbackground);
6746 QCstipple = intern (":stipple");
6747 staticpro (&QCstipple);
6748 QCwidth = intern (":width");
6749 staticpro (&QCwidth);
6750 QCfont = intern (":font");
6751 staticpro (&QCfont);
6752 QCfontset = intern (":fontset");
6753 staticpro (&QCfontset);
6754 QCbold = intern (":bold");
6755 staticpro (&QCbold);
6756 QCitalic = intern (":italic");
6757 staticpro (&QCitalic);
6758 QCoverline = intern (":overline");
6759 staticpro (&QCoverline);
6760 QCstrike_through = intern (":strike-through");
6761 staticpro (&QCstrike_through);
6762 QCbox = intern (":box");
6763 staticpro (&QCbox);
6764 QCinherit = intern (":inherit");
6765 staticpro (&QCinherit);
6767 /* Symbols used for Lisp face attribute values. */
6768 QCcolor = intern (":color");
6769 staticpro (&QCcolor);
6770 QCline_width = intern (":line-width");
6771 staticpro (&QCline_width);
6772 QCstyle = intern (":style");
6773 staticpro (&QCstyle);
6774 Qreleased_button = intern ("released-button");
6775 staticpro (&Qreleased_button);
6776 Qpressed_button = intern ("pressed-button");
6777 staticpro (&Qpressed_button);
6778 Qnormal = intern ("normal");
6779 staticpro (&Qnormal);
6780 Qultra_light = intern ("ultra-light");
6781 staticpro (&Qultra_light);
6782 Qextra_light = intern ("extra-light");
6783 staticpro (&Qextra_light);
6784 Qlight = intern ("light");
6785 staticpro (&Qlight);
6786 Qsemi_light = intern ("semi-light");
6787 staticpro (&Qsemi_light);
6788 Qsemi_bold = intern ("semi-bold");
6789 staticpro (&Qsemi_bold);
6790 Qbold = intern ("bold");
6791 staticpro (&Qbold);
6792 Qextra_bold = intern ("extra-bold");
6793 staticpro (&Qextra_bold);
6794 Qultra_bold = intern ("ultra-bold");
6795 staticpro (&Qultra_bold);
6796 Qoblique = intern ("oblique");
6797 staticpro (&Qoblique);
6798 Qitalic = intern ("italic");
6799 staticpro (&Qitalic);
6800 Qreverse_oblique = intern ("reverse-oblique");
6801 staticpro (&Qreverse_oblique);
6802 Qreverse_italic = intern ("reverse-italic");
6803 staticpro (&Qreverse_italic);
6804 Qultra_condensed = intern ("ultra-condensed");
6805 staticpro (&Qultra_condensed);
6806 Qextra_condensed = intern ("extra-condensed");
6807 staticpro (&Qextra_condensed);
6808 Qcondensed = intern ("condensed");
6809 staticpro (&Qcondensed);
6810 Qsemi_condensed = intern ("semi-condensed");
6811 staticpro (&Qsemi_condensed);
6812 Qsemi_expanded = intern ("semi-expanded");
6813 staticpro (&Qsemi_expanded);
6814 Qexpanded = intern ("expanded");
6815 staticpro (&Qexpanded);
6816 Qextra_expanded = intern ("extra-expanded");
6817 staticpro (&Qextra_expanded);
6818 Qultra_expanded = intern ("ultra-expanded");
6819 staticpro (&Qultra_expanded);
6820 Qbackground_color = intern ("background-color");
6821 staticpro (&Qbackground_color);
6822 Qforeground_color = intern ("foreground-color");
6823 staticpro (&Qforeground_color);
6824 Qunspecified = intern ("unspecified");
6825 staticpro (&Qunspecified);
6826 Qignore_defface = intern (":ignore-defface");
6827 staticpro (&Qignore_defface);
6829 Qface_alias = intern ("face-alias");
6830 staticpro (&Qface_alias);
6831 Qdefault = intern ("default");
6832 staticpro (&Qdefault);
6833 Qtool_bar = intern ("tool-bar");
6834 staticpro (&Qtool_bar);
6835 Qregion = intern ("region");
6836 staticpro (&Qregion);
6837 Qfringe = intern ("fringe");
6838 staticpro (&Qfringe);
6839 Qheader_line = intern ("header-line");
6840 staticpro (&Qheader_line);
6841 Qscroll_bar = intern ("scroll-bar");
6842 staticpro (&Qscroll_bar);
6843 Qmenu = intern ("menu");
6844 staticpro (&Qmenu);
6845 Qcursor = intern ("cursor");
6846 staticpro (&Qcursor);
6847 Qborder = intern ("border");
6848 staticpro (&Qborder);
6849 Qmouse = intern ("mouse");
6850 staticpro (&Qmouse);
6851 Qmode_line_inactive = intern ("mode-line-inactive");
6852 staticpro (&Qmode_line_inactive);
6853 Qvertical_border = intern ("vertical-border");
6854 staticpro (&Qvertical_border);
6855 Qtty_color_desc = intern ("tty-color-desc");
6856 staticpro (&Qtty_color_desc);
6857 Qtty_color_standard_values = intern ("tty-color-standard-values");
6858 staticpro (&Qtty_color_standard_values);
6859 Qtty_color_by_index = intern ("tty-color-by-index");
6860 staticpro (&Qtty_color_by_index);
6861 Qtty_color_alist = intern ("tty-color-alist");
6862 staticpro (&Qtty_color_alist);
6863 Qscalable_fonts_allowed = intern ("scalable-fonts-allowed");
6864 staticpro (&Qscalable_fonts_allowed);
6866 Vparam_value_alist = Fcons (Fcons (Qnil, Qnil), Qnil);
6867 staticpro (&Vparam_value_alist);
6868 Vface_alternative_font_family_alist = Qnil;
6869 staticpro (&Vface_alternative_font_family_alist);
6870 Vface_alternative_font_registry_alist = Qnil;
6871 staticpro (&Vface_alternative_font_registry_alist);
6873 defsubr (&Sinternal_make_lisp_face);
6874 defsubr (&Sinternal_lisp_face_p);
6875 defsubr (&Sinternal_set_lisp_face_attribute);
6876 #ifdef HAVE_WINDOW_SYSTEM
6877 defsubr (&Sinternal_set_lisp_face_attribute_from_resource);
6878 #endif
6879 defsubr (&Scolor_gray_p);
6880 defsubr (&Scolor_supported_p);
6881 #ifndef HAVE_X_WINDOWS
6882 defsubr (&Sx_load_color_file);
6883 #endif
6884 defsubr (&Sface_attribute_relative_p);
6885 defsubr (&Smerge_face_attribute);
6886 defsubr (&Sinternal_get_lisp_face_attribute);
6887 defsubr (&Sinternal_lisp_face_attribute_values);
6888 defsubr (&Sinternal_lisp_face_equal_p);
6889 defsubr (&Sinternal_lisp_face_empty_p);
6890 defsubr (&Sinternal_copy_lisp_face);
6891 defsubr (&Sinternal_merge_in_global_face);
6892 defsubr (&Sface_font);
6893 defsubr (&Sframe_face_alist);
6894 defsubr (&Sdisplay_supports_face_attributes_p);
6895 defsubr (&Scolor_distance);
6896 defsubr (&Sinternal_set_font_selection_order);
6897 defsubr (&Sinternal_set_alternative_font_family_alist);
6898 defsubr (&Sinternal_set_alternative_font_registry_alist);
6899 defsubr (&Sface_attributes_as_vector);
6900 #if GLYPH_DEBUG
6901 defsubr (&Sdump_face);
6902 defsubr (&Sshow_face_resources);
6903 #endif /* GLYPH_DEBUG */
6904 defsubr (&Sclear_face_cache);
6905 defsubr (&Stty_suppress_bold_inverse_default_colors);
6907 #if defined DEBUG_X_COLORS && defined HAVE_X_WINDOWS
6908 defsubr (&Sdump_colors);
6909 #endif
6911 DEFVAR_LISP ("font-list-limit", &Vfont_list_limit,
6912 doc: /* *Limit for font matching.
6913 If an integer > 0, font matching functions won't load more than
6914 that number of fonts when searching for a matching font. */);
6915 Vfont_list_limit = make_number (DEFAULT_FONT_LIST_LIMIT);
6917 DEFVAR_LISP ("face-new-frame-defaults", &Vface_new_frame_defaults,
6918 doc: /* List of global face definitions (for internal use only.) */);
6919 Vface_new_frame_defaults = Qnil;
6921 DEFVAR_LISP ("face-default-stipple", &Vface_default_stipple,
6922 doc: /* *Default stipple pattern used on monochrome displays.
6923 This stipple pattern is used on monochrome displays
6924 instead of shades of gray for a face background color.
6925 See `set-face-stipple' for possible values for this variable. */);
6926 Vface_default_stipple = build_string ("gray3");
6928 DEFVAR_LISP ("tty-defined-color-alist", &Vtty_defined_color_alist,
6929 doc: /* An alist of defined terminal colors and their RGB values. */);
6930 Vtty_defined_color_alist = Qnil;
6932 DEFVAR_LISP ("scalable-fonts-allowed", &Vscalable_fonts_allowed,
6933 doc: /* Allowed scalable fonts.
6934 A value of nil means don't allow any scalable fonts.
6935 A value of t means allow any scalable font.
6936 Otherwise, value must be a list of regular expressions. A font may be
6937 scaled if its name matches a regular expression in the list.
6938 Note that if value is nil, a scalable font might still be used, if no
6939 other font of the appropriate family and registry is available. */);
6940 Vscalable_fonts_allowed = Qnil;
6942 DEFVAR_LISP ("face-ignored-fonts", &Vface_ignored_fonts,
6943 doc: /* List of ignored fonts.
6944 Each element is a regular expression that matches names of fonts to
6945 ignore. */);
6946 Vface_ignored_fonts = Qnil;
6948 DEFVAR_LISP ("face-remapping-alist", &Vface_remapping_alist,
6949 doc: /* Alist of face remappings.
6950 Each element is of the form:
6952 (FACE REPLACEMENT...),
6954 which causes display of the face FACE to use REPLACEMENT... instead.
6955 REPLACEMENT... is interpreted the same way the value of a `face' text
6956 property is: it may be (1) A face name, (2) A list of face names, (3) A
6957 property-list of face attribute/value pairs, or (4) A list of face names
6958 intermixed with lists containing face attribute/value pairs.
6960 Multiple entries in REPLACEMENT... are merged together to form the final
6961 result, with faces or attributes earlier in the list taking precedence
6962 over those that are later.
6964 Face-name remapping cycles are suppressed; recursive references use the
6965 underlying face instead of the remapped face. So a remapping of the form:
6967 (FACE EXTRA-FACE... FACE)
6971 (FACE (FACE-ATTR VAL ...) FACE)
6973 will cause EXTRA-FACE... or (FACE-ATTR VAL ...) to be _merged_ with the
6974 existing definition of FACE. Note that for the default face, this isn't
6975 necessary, as every face inherits from the default face.
6977 Making this variable buffer-local is a good way to allow buffer-specific
6978 face definitions. For instance, the mode my-mode could define a face
6979 `my-mode-default', and then in the mode setup function, do:
6981 (set (make-local-variable 'face-remapping-alist)
6982 '((default my-mode-default)))). */);
6983 Vface_remapping_alist = Qnil;
6985 DEFVAR_LISP ("face-font-rescale-alist", &Vface_font_rescale_alist,
6986 doc: /* Alist of fonts vs the rescaling factors.
6987 Each element is a cons (FONT-PATTERN . RESCALE-RATIO), where
6988 FONT-PATTERN is a font-spec or a regular expression matching a font name, and
6989 RESCALE-RATIO is a floating point number to specify how much larger
6990 \(or smaller) font we should use. For instance, if a face requests
6991 a font of 10 point, we actually use a font of 10 * RESCALE-RATIO point. */);
6992 Vface_font_rescale_alist = Qnil;
6994 #ifdef HAVE_WINDOW_SYSTEM
6995 defsubr (&Sbitmap_spec_p);
6996 defsubr (&Sx_list_fonts);
6997 defsubr (&Sinternal_face_x_get_resource);
6998 defsubr (&Sx_family_fonts);
6999 #endif
7002 /* arch-tag: 8a0f7598-5517-408d-9ab3-1da6fcd4c749
7003 (do not change this comment) */