* emacs-lisp/re-builder.el (reb-mode-map): Fix typo in menu tooltip.
[emacs.git] / src / xfaces.c
blob873a785516886181aac2b3cc6d0cd370f8b35ac8
1 /* xfaces.c -- "Face" primitives.
2 Copyright (C) 1993, 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008 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 if (FRAME_IMAGE_CACHE (f) == NULL)
853 /* Is that ever possible?? --Stef */
854 FRAME_IMAGE_CACHE (f) = make_image_cache ();
855 ++FRAME_IMAGE_CACHE (f)->refcount;
857 #endif /* HAVE_WINDOW_SYSTEM */
859 /* Realize basic faces. Must have enough information in frame
860 parameters to realize basic faces at this point. */
861 #ifdef HAVE_X_WINDOWS
862 if (!FRAME_X_P (f) || FRAME_X_WINDOW (f))
863 #endif
864 #ifdef WINDOWSNT
865 if (!FRAME_WINDOW_P (f) || FRAME_W32_WINDOW (f))
866 #endif
867 #ifdef HAVE_NS
868 if (!FRAME_NS_P (f) || FRAME_NS_WINDOW (f))
869 #endif
870 if (!realize_basic_faces (f))
871 abort ();
875 /* Free face cache of frame F. Called from Fdelete_frame. */
877 void
878 free_frame_faces (f)
879 struct frame *f;
881 struct face_cache *face_cache = FRAME_FACE_CACHE (f);
883 if (face_cache)
885 free_face_cache (face_cache);
886 FRAME_FACE_CACHE (f) = NULL;
889 #ifdef HAVE_WINDOW_SYSTEM
890 if (FRAME_WINDOW_P (f))
892 struct image_cache *image_cache = FRAME_IMAGE_CACHE (f);
893 if (image_cache)
895 --image_cache->refcount;
896 if (image_cache->refcount == 0)
897 free_image_cache (f);
900 #endif /* HAVE_WINDOW_SYSTEM */
904 /* Clear face caches, and recompute basic faces for frame F. Call
905 this after changing frame parameters on which those faces depend,
906 or when realized faces have been freed due to changing attributes
907 of named faces. */
909 void
910 recompute_basic_faces (f)
911 struct frame *f;
913 if (FRAME_FACE_CACHE (f))
915 clear_face_cache (0);
916 if (!realize_basic_faces (f))
917 abort ();
922 /* Clear the face caches of all frames. CLEAR_FONTS_P non-zero means
923 try to free unused fonts, too. */
925 void
926 clear_face_cache (clear_fonts_p)
927 int clear_fonts_p;
929 #ifdef HAVE_WINDOW_SYSTEM
930 Lisp_Object tail, frame;
931 struct frame *f;
933 if (clear_fonts_p
934 || ++clear_font_table_count == CLEAR_FONT_TABLE_COUNT)
936 #if 0
937 /* Not yet implemented. */
938 clear_font_cache (frame);
939 #endif
941 /* From time to time see if we can unload some fonts. This also
942 frees all realized faces on all frames. Fonts needed by
943 faces will be loaded again when faces are realized again. */
944 clear_font_table_count = 0;
946 FOR_EACH_FRAME (tail, frame)
948 struct frame *f = XFRAME (frame);
949 if (FRAME_WINDOW_P (f)
950 && FRAME_X_DISPLAY_INFO (f)->n_fonts > CLEAR_FONT_TABLE_NFONTS)
951 free_all_realized_faces (frame);
954 else
956 /* Clear GCs of realized faces. */
957 FOR_EACH_FRAME (tail, frame)
959 f = XFRAME (frame);
960 if (FRAME_WINDOW_P (f))
961 clear_face_gcs (FRAME_FACE_CACHE (f));
963 clear_image_caches (Qnil);
965 #endif /* HAVE_WINDOW_SYSTEM */
969 DEFUN ("clear-face-cache", Fclear_face_cache, Sclear_face_cache, 0, 1, 0,
970 doc: /* Clear face caches on all frames.
971 Optional THOROUGHLY non-nil means try to free unused fonts, too. */)
972 (thoroughly)
973 Lisp_Object thoroughly;
975 clear_face_cache (!NILP (thoroughly));
976 ++face_change_count;
977 ++windows_or_buffers_changed;
978 return Qnil;
982 /***********************************************************************
983 X Pixmaps
984 ***********************************************************************/
986 #ifdef HAVE_WINDOW_SYSTEM
988 DEFUN ("bitmap-spec-p", Fbitmap_spec_p, Sbitmap_spec_p, 1, 1, 0,
989 doc: /* Value is non-nil if OBJECT is a valid bitmap specification.
990 A bitmap specification is either a string, a file name, or a list
991 \(WIDTH HEIGHT DATA) where WIDTH is the pixel width of the bitmap,
992 HEIGHT is its height, and DATA is a string containing the bits of
993 the pixmap. Bits are stored row by row, each row occupies
994 \(WIDTH + 7)/8 bytes. */)
995 (object)
996 Lisp_Object object;
998 int pixmap_p = 0;
1000 if (STRINGP (object))
1001 /* If OBJECT is a string, it's a file name. */
1002 pixmap_p = 1;
1003 else if (CONSP (object))
1005 /* Otherwise OBJECT must be (WIDTH HEIGHT DATA), WIDTH and
1006 HEIGHT must be integers > 0, and DATA must be string large
1007 enough to hold a bitmap of the specified size. */
1008 Lisp_Object width, height, data;
1010 height = width = data = Qnil;
1012 if (CONSP (object))
1014 width = XCAR (object);
1015 object = XCDR (object);
1016 if (CONSP (object))
1018 height = XCAR (object);
1019 object = XCDR (object);
1020 if (CONSP (object))
1021 data = XCAR (object);
1025 if (NATNUMP (width) && NATNUMP (height) && STRINGP (data))
1027 int bytes_per_row = ((XFASTINT (width) + BITS_PER_CHAR - 1)
1028 / BITS_PER_CHAR);
1029 if (SBYTES (data) >= bytes_per_row * XINT (height))
1030 pixmap_p = 1;
1034 return pixmap_p ? Qt : Qnil;
1038 /* Load a bitmap according to NAME (which is either a file name or a
1039 pixmap spec) for use on frame F. Value is the bitmap_id (see
1040 xfns.c). If NAME is nil, return with a bitmap id of zero. If
1041 bitmap cannot be loaded, display a message saying so, and return
1042 zero. Store the bitmap width in *W_PTR and its height in *H_PTR,
1043 if these pointers are not null. */
1045 static int
1046 load_pixmap (f, name, w_ptr, h_ptr)
1047 FRAME_PTR f;
1048 Lisp_Object name;
1049 unsigned int *w_ptr, *h_ptr;
1051 int bitmap_id;
1053 if (NILP (name))
1054 return 0;
1056 CHECK_TYPE (!NILP (Fbitmap_spec_p (name)), Qbitmap_spec_p, name);
1058 BLOCK_INPUT;
1059 if (CONSP (name))
1061 /* Decode a bitmap spec into a bitmap. */
1063 int h, w;
1064 Lisp_Object bits;
1066 w = XINT (Fcar (name));
1067 h = XINT (Fcar (Fcdr (name)));
1068 bits = Fcar (Fcdr (Fcdr (name)));
1070 bitmap_id = x_create_bitmap_from_data (f, SDATA (bits),
1071 w, h);
1073 else
1075 /* It must be a string -- a file name. */
1076 bitmap_id = x_create_bitmap_from_file (f, name);
1078 UNBLOCK_INPUT;
1080 if (bitmap_id < 0)
1082 add_to_log ("Invalid or undefined bitmap `%s'", name, Qnil);
1083 bitmap_id = 0;
1085 if (w_ptr)
1086 *w_ptr = 0;
1087 if (h_ptr)
1088 *h_ptr = 0;
1090 else
1092 #if GLYPH_DEBUG
1093 ++npixmaps_allocated;
1094 #endif
1095 if (w_ptr)
1096 *w_ptr = x_bitmap_width (f, bitmap_id);
1098 if (h_ptr)
1099 *h_ptr = x_bitmap_height (f, bitmap_id);
1102 return bitmap_id;
1105 #endif /* HAVE_WINDOW_SYSTEM */
1109 /***********************************************************************
1110 X Colors
1111 ***********************************************************************/
1113 /* Parse RGB_LIST, and fill in the RGB fields of COLOR.
1114 RGB_LIST should contain (at least) 3 lisp integers.
1115 Return 0 if there's a problem with RGB_LIST, otherwise return 1. */
1117 static int
1118 parse_rgb_list (rgb_list, color)
1119 Lisp_Object rgb_list;
1120 XColor *color;
1122 #define PARSE_RGB_LIST_FIELD(field) \
1123 if (CONSP (rgb_list) && INTEGERP (XCAR (rgb_list))) \
1125 color->field = XINT (XCAR (rgb_list)); \
1126 rgb_list = XCDR (rgb_list); \
1128 else \
1129 return 0;
1131 PARSE_RGB_LIST_FIELD (red);
1132 PARSE_RGB_LIST_FIELD (green);
1133 PARSE_RGB_LIST_FIELD (blue);
1135 return 1;
1139 /* Lookup on frame F the color described by the lisp string COLOR.
1140 The resulting tty color is returned in TTY_COLOR; if STD_COLOR is
1141 non-zero, then the `standard' definition of the same color is
1142 returned in it. */
1144 static int
1145 tty_lookup_color (f, color, tty_color, std_color)
1146 struct frame *f;
1147 Lisp_Object color;
1148 XColor *tty_color, *std_color;
1150 Lisp_Object frame, color_desc;
1152 if (!STRINGP (color) || NILP (Ffboundp (Qtty_color_desc)))
1153 return 0;
1155 XSETFRAME (frame, f);
1157 color_desc = call2 (Qtty_color_desc, color, frame);
1158 if (CONSP (color_desc) && CONSP (XCDR (color_desc)))
1160 Lisp_Object rgb;
1162 if (! INTEGERP (XCAR (XCDR (color_desc))))
1163 return 0;
1165 tty_color->pixel = XINT (XCAR (XCDR (color_desc)));
1167 rgb = XCDR (XCDR (color_desc));
1168 if (! parse_rgb_list (rgb, tty_color))
1169 return 0;
1171 /* Should we fill in STD_COLOR too? */
1172 if (std_color)
1174 /* Default STD_COLOR to the same as TTY_COLOR. */
1175 *std_color = *tty_color;
1177 /* Do a quick check to see if the returned descriptor is
1178 actually _exactly_ equal to COLOR, otherwise we have to
1179 lookup STD_COLOR separately. If it's impossible to lookup
1180 a standard color, we just give up and use TTY_COLOR. */
1181 if ((!STRINGP (XCAR (color_desc))
1182 || NILP (Fstring_equal (color, XCAR (color_desc))))
1183 && !NILP (Ffboundp (Qtty_color_standard_values)))
1185 /* Look up STD_COLOR separately. */
1186 rgb = call1 (Qtty_color_standard_values, color);
1187 if (! parse_rgb_list (rgb, std_color))
1188 return 0;
1192 return 1;
1194 else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist"))))
1195 /* We were called early during startup, and the colors are not
1196 yet set up in tty-defined-color-alist. Don't return a failure
1197 indication, since this produces the annoying "Unable to
1198 load color" messages in the *Messages* buffer. */
1199 return 1;
1200 else
1201 /* tty-color-desc seems to have returned a bad value. */
1202 return 0;
1205 /* A version of defined_color for non-X frames. */
1208 tty_defined_color (f, color_name, color_def, alloc)
1209 struct frame *f;
1210 char *color_name;
1211 XColor *color_def;
1212 int alloc;
1214 int status = 1;
1216 /* Defaults. */
1217 color_def->pixel = FACE_TTY_DEFAULT_COLOR;
1218 color_def->red = 0;
1219 color_def->blue = 0;
1220 color_def->green = 0;
1222 if (*color_name)
1223 status = tty_lookup_color (f, build_string (color_name), color_def, NULL);
1225 if (color_def->pixel == FACE_TTY_DEFAULT_COLOR && *color_name)
1227 if (strcmp (color_name, "unspecified-fg") == 0)
1228 color_def->pixel = FACE_TTY_DEFAULT_FG_COLOR;
1229 else if (strcmp (color_name, "unspecified-bg") == 0)
1230 color_def->pixel = FACE_TTY_DEFAULT_BG_COLOR;
1233 if (color_def->pixel != FACE_TTY_DEFAULT_COLOR)
1234 status = 1;
1236 return status;
1240 /* Decide if color named COLOR_NAME is valid for the display
1241 associated with the frame F; if so, return the rgb values in
1242 COLOR_DEF. If ALLOC is nonzero, allocate a new colormap cell.
1244 This does the right thing for any type of frame. */
1247 defined_color (f, color_name, color_def, alloc)
1248 struct frame *f;
1249 char *color_name;
1250 XColor *color_def;
1251 int alloc;
1253 if (!FRAME_WINDOW_P (f))
1254 return tty_defined_color (f, color_name, color_def, alloc);
1255 #ifdef HAVE_X_WINDOWS
1256 else if (FRAME_X_P (f))
1257 return x_defined_color (f, color_name, color_def, alloc);
1258 #endif
1259 #ifdef WINDOWSNT
1260 else if (FRAME_W32_P (f))
1261 return w32_defined_color (f, color_name, color_def, alloc);
1262 #endif
1263 #ifdef HAVE_NS
1264 else if (FRAME_NS_P (f))
1265 return ns_defined_color (f, color_name, color_def, alloc, 1);
1266 #endif
1267 else
1268 abort ();
1272 /* Given the index IDX of a tty color on frame F, return its name, a
1273 Lisp string. */
1275 Lisp_Object
1276 tty_color_name (f, idx)
1277 struct frame *f;
1278 int idx;
1280 if (idx >= 0 && !NILP (Ffboundp (Qtty_color_by_index)))
1282 Lisp_Object frame;
1283 Lisp_Object coldesc;
1285 XSETFRAME (frame, f);
1286 coldesc = call2 (Qtty_color_by_index, make_number (idx), frame);
1288 if (!NILP (coldesc))
1289 return XCAR (coldesc);
1291 #ifdef MSDOS
1292 /* We can have an MSDOG frame under -nw for a short window of
1293 opportunity before internal_terminal_init is called. DTRT. */
1294 if (FRAME_MSDOS_P (f) && !inhibit_window_system)
1295 return msdos_stdcolor_name (idx);
1296 #endif
1298 if (idx == FACE_TTY_DEFAULT_FG_COLOR)
1299 return build_string (unspecified_fg);
1300 if (idx == FACE_TTY_DEFAULT_BG_COLOR)
1301 return build_string (unspecified_bg);
1303 return Qunspecified;
1307 /* Return non-zero if COLOR_NAME is a shade of gray (or white or
1308 black) on frame F.
1310 The criterion implemented here is not a terribly sophisticated one. */
1312 static int
1313 face_color_gray_p (f, color_name)
1314 struct frame *f;
1315 char *color_name;
1317 XColor color;
1318 int gray_p;
1320 if (defined_color (f, color_name, &color, 0))
1321 gray_p = (/* Any color sufficiently close to black counts as grey. */
1322 (color.red < 5000 && color.green < 5000 && color.blue < 5000)
1324 ((eabs (color.red - color.green)
1325 < max (color.red, color.green) / 20)
1326 && (eabs (color.green - color.blue)
1327 < max (color.green, color.blue) / 20)
1328 && (eabs (color.blue - color.red)
1329 < max (color.blue, color.red) / 20)));
1330 else
1331 gray_p = 0;
1333 return gray_p;
1337 /* Return non-zero if color COLOR_NAME can be displayed on frame F.
1338 BACKGROUND_P non-zero means the color will be used as background
1339 color. */
1341 static int
1342 face_color_supported_p (f, color_name, background_p)
1343 struct frame *f;
1344 char *color_name;
1345 int background_p;
1347 Lisp_Object frame;
1348 XColor not_used;
1350 XSETFRAME (frame, f);
1351 return
1352 #ifdef HAVE_WINDOW_SYSTEM
1353 FRAME_WINDOW_P (f)
1354 ? (!NILP (Fxw_display_color_p (frame))
1355 || xstrcasecmp (color_name, "black") == 0
1356 || xstrcasecmp (color_name, "white") == 0
1357 || (background_p
1358 && face_color_gray_p (f, color_name))
1359 || (!NILP (Fx_display_grayscale_p (frame))
1360 && face_color_gray_p (f, color_name)))
1362 #endif
1363 tty_defined_color (f, color_name, &not_used, 0);
1367 DEFUN ("color-gray-p", Fcolor_gray_p, Scolor_gray_p, 1, 2, 0,
1368 doc: /* Return non-nil if COLOR is a shade of gray (or white or black).
1369 FRAME specifies the frame and thus the display for interpreting COLOR.
1370 If FRAME is nil or omitted, use the selected frame. */)
1371 (color, frame)
1372 Lisp_Object color, frame;
1374 struct frame *f;
1376 CHECK_STRING (color);
1377 if (NILP (frame))
1378 frame = selected_frame;
1379 else
1380 CHECK_FRAME (frame);
1381 f = XFRAME (frame);
1382 return face_color_gray_p (f, SDATA (color)) ? Qt : Qnil;
1386 DEFUN ("color-supported-p", Fcolor_supported_p,
1387 Scolor_supported_p, 1, 3, 0,
1388 doc: /* Return non-nil if COLOR can be displayed on FRAME.
1389 BACKGROUND-P non-nil means COLOR is used as a background.
1390 Otherwise, this function tells whether it can be used as a foreground.
1391 If FRAME is nil or omitted, use the selected frame.
1392 COLOR must be a valid color name. */)
1393 (color, frame, background_p)
1394 Lisp_Object frame, color, background_p;
1396 struct frame *f;
1398 CHECK_STRING (color);
1399 if (NILP (frame))
1400 frame = selected_frame;
1401 else
1402 CHECK_FRAME (frame);
1403 f = XFRAME (frame);
1404 if (face_color_supported_p (f, SDATA (color), !NILP (background_p)))
1405 return Qt;
1406 return Qnil;
1410 /* Load color with name NAME for use by face FACE on frame F.
1411 TARGET_INDEX must be one of LFACE_FOREGROUND_INDEX,
1412 LFACE_BACKGROUND_INDEX, LFACE_UNDERLINE_INDEX, LFACE_OVERLINE_INDEX,
1413 LFACE_STRIKE_THROUGH_INDEX, or LFACE_BOX_INDEX. Value is the
1414 pixel color. If color cannot be loaded, display a message, and
1415 return the foreground, background or underline color of F, but
1416 record that fact in flags of the face so that we don't try to free
1417 these colors. */
1419 unsigned long
1420 load_color (f, face, name, target_index)
1421 struct frame *f;
1422 struct face *face;
1423 Lisp_Object name;
1424 enum lface_attribute_index target_index;
1426 XColor color;
1428 xassert (STRINGP (name));
1429 xassert (target_index == LFACE_FOREGROUND_INDEX
1430 || target_index == LFACE_BACKGROUND_INDEX
1431 || target_index == LFACE_UNDERLINE_INDEX
1432 || target_index == LFACE_OVERLINE_INDEX
1433 || target_index == LFACE_STRIKE_THROUGH_INDEX
1434 || target_index == LFACE_BOX_INDEX);
1436 /* if the color map is full, defined_color will return a best match
1437 to the values in an existing cell. */
1438 if (!defined_color (f, SDATA (name), &color, 1))
1440 add_to_log ("Unable to load color \"%s\"", name, Qnil);
1442 switch (target_index)
1444 case LFACE_FOREGROUND_INDEX:
1445 face->foreground_defaulted_p = 1;
1446 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1447 break;
1449 case LFACE_BACKGROUND_INDEX:
1450 face->background_defaulted_p = 1;
1451 color.pixel = FRAME_BACKGROUND_PIXEL (f);
1452 break;
1454 case LFACE_UNDERLINE_INDEX:
1455 face->underline_defaulted_p = 1;
1456 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1457 break;
1459 case LFACE_OVERLINE_INDEX:
1460 face->overline_color_defaulted_p = 1;
1461 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1462 break;
1464 case LFACE_STRIKE_THROUGH_INDEX:
1465 face->strike_through_color_defaulted_p = 1;
1466 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1467 break;
1469 case LFACE_BOX_INDEX:
1470 face->box_color_defaulted_p = 1;
1471 color.pixel = FRAME_FOREGROUND_PIXEL (f);
1472 break;
1474 default:
1475 abort ();
1478 #if GLYPH_DEBUG
1479 else
1480 ++ncolors_allocated;
1481 #endif
1483 return color.pixel;
1487 #ifdef HAVE_WINDOW_SYSTEM
1489 /* Load colors for face FACE which is used on frame F. Colors are
1490 specified by slots LFACE_BACKGROUND_INDEX and LFACE_FOREGROUND_INDEX
1491 of ATTRS. If the background color specified is not supported on F,
1492 try to emulate gray colors with a stipple from Vface_default_stipple. */
1494 static void
1495 load_face_colors (f, face, attrs)
1496 struct frame *f;
1497 struct face *face;
1498 Lisp_Object *attrs;
1500 Lisp_Object fg, bg;
1502 bg = attrs[LFACE_BACKGROUND_INDEX];
1503 fg = attrs[LFACE_FOREGROUND_INDEX];
1505 /* Swap colors if face is inverse-video. */
1506 if (EQ (attrs[LFACE_INVERSE_INDEX], Qt))
1508 Lisp_Object tmp;
1509 tmp = fg;
1510 fg = bg;
1511 bg = tmp;
1514 /* Check for support for foreground, not for background because
1515 face_color_supported_p is smart enough to know that grays are
1516 "supported" as background because we are supposed to use stipple
1517 for them. */
1518 if (!face_color_supported_p (f, SDATA (bg), 0)
1519 && !NILP (Fbitmap_spec_p (Vface_default_stipple)))
1521 x_destroy_bitmap (f, face->stipple);
1522 face->stipple = load_pixmap (f, Vface_default_stipple,
1523 &face->pixmap_w, &face->pixmap_h);
1526 face->background = load_color (f, face, bg, LFACE_BACKGROUND_INDEX);
1527 face->foreground = load_color (f, face, fg, LFACE_FOREGROUND_INDEX);
1531 /* Free color PIXEL on frame F. */
1533 void
1534 unload_color (f, pixel)
1535 struct frame *f;
1536 unsigned long pixel;
1538 #ifdef HAVE_X_WINDOWS
1539 if (pixel != -1)
1541 BLOCK_INPUT;
1542 x_free_colors (f, &pixel, 1);
1543 UNBLOCK_INPUT;
1545 #endif
1549 /* Free colors allocated for FACE. */
1551 static void
1552 free_face_colors (f, face)
1553 struct frame *f;
1554 struct face *face;
1556 /* PENDING(NS): need to do something here? */
1557 #ifdef HAVE_X_WINDOWS
1558 if (face->colors_copied_bitwise_p)
1559 return;
1561 BLOCK_INPUT;
1563 if (!face->foreground_defaulted_p)
1565 x_free_colors (f, &face->foreground, 1);
1566 IF_DEBUG (--ncolors_allocated);
1569 if (!face->background_defaulted_p)
1571 x_free_colors (f, &face->background, 1);
1572 IF_DEBUG (--ncolors_allocated);
1575 if (face->underline_p
1576 && !face->underline_defaulted_p)
1578 x_free_colors (f, &face->underline_color, 1);
1579 IF_DEBUG (--ncolors_allocated);
1582 if (face->overline_p
1583 && !face->overline_color_defaulted_p)
1585 x_free_colors (f, &face->overline_color, 1);
1586 IF_DEBUG (--ncolors_allocated);
1589 if (face->strike_through_p
1590 && !face->strike_through_color_defaulted_p)
1592 x_free_colors (f, &face->strike_through_color, 1);
1593 IF_DEBUG (--ncolors_allocated);
1596 if (face->box != FACE_NO_BOX
1597 && !face->box_color_defaulted_p)
1599 x_free_colors (f, &face->box_color, 1);
1600 IF_DEBUG (--ncolors_allocated);
1603 UNBLOCK_INPUT;
1604 #endif /* HAVE_X_WINDOWS */
1607 #endif /* HAVE_WINDOW_SYSTEM */
1611 /***********************************************************************
1612 XLFD Font Names
1613 ***********************************************************************/
1615 /* An enumerator for each field of an XLFD font name. */
1617 enum xlfd_field
1619 XLFD_FOUNDRY,
1620 XLFD_FAMILY,
1621 XLFD_WEIGHT,
1622 XLFD_SLANT,
1623 XLFD_SWIDTH,
1624 XLFD_ADSTYLE,
1625 XLFD_PIXEL_SIZE,
1626 XLFD_POINT_SIZE,
1627 XLFD_RESX,
1628 XLFD_RESY,
1629 XLFD_SPACING,
1630 XLFD_AVGWIDTH,
1631 XLFD_REGISTRY,
1632 XLFD_ENCODING,
1633 XLFD_LAST
1636 /* An enumerator for each possible slant value of a font. Taken from
1637 the XLFD specification. */
1639 enum xlfd_slant
1641 XLFD_SLANT_UNKNOWN,
1642 XLFD_SLANT_ROMAN,
1643 XLFD_SLANT_ITALIC,
1644 XLFD_SLANT_OBLIQUE,
1645 XLFD_SLANT_REVERSE_ITALIC,
1646 XLFD_SLANT_REVERSE_OBLIQUE,
1647 XLFD_SLANT_OTHER
1650 /* Relative font weight according to XLFD documentation. */
1652 enum xlfd_weight
1654 XLFD_WEIGHT_UNKNOWN,
1655 XLFD_WEIGHT_ULTRA_LIGHT, /* 10 */
1656 XLFD_WEIGHT_EXTRA_LIGHT, /* 20 */
1657 XLFD_WEIGHT_LIGHT, /* 30 */
1658 XLFD_WEIGHT_SEMI_LIGHT, /* 40: SemiLight, Book, ... */
1659 XLFD_WEIGHT_MEDIUM, /* 50: Medium, Normal, Regular, ... */
1660 XLFD_WEIGHT_SEMI_BOLD, /* 60: SemiBold, DemiBold, ... */
1661 XLFD_WEIGHT_BOLD, /* 70: Bold, ... */
1662 XLFD_WEIGHT_EXTRA_BOLD, /* 80: ExtraBold, Heavy, ... */
1663 XLFD_WEIGHT_ULTRA_BOLD /* 90: UltraBold, Black, ... */
1666 /* Relative proportionate width. */
1668 enum xlfd_swidth
1670 XLFD_SWIDTH_UNKNOWN,
1671 XLFD_SWIDTH_ULTRA_CONDENSED, /* 10 */
1672 XLFD_SWIDTH_EXTRA_CONDENSED, /* 20 */
1673 XLFD_SWIDTH_CONDENSED, /* 30: Condensed, Narrow, Compressed, ... */
1674 XLFD_SWIDTH_SEMI_CONDENSED, /* 40: semicondensed */
1675 XLFD_SWIDTH_MEDIUM, /* 50: Medium, Normal, Regular, ... */
1676 XLFD_SWIDTH_SEMI_EXPANDED, /* 60: SemiExpanded, DemiExpanded, ... */
1677 XLFD_SWIDTH_EXPANDED, /* 70: Expanded... */
1678 XLFD_SWIDTH_EXTRA_EXPANDED, /* 80: ExtraExpanded, Wide... */
1679 XLFD_SWIDTH_ULTRA_EXPANDED /* 90: UltraExpanded... */
1682 /* Order by which font selection chooses fonts. The default values
1683 mean `first, find a best match for the font width, then for the
1684 font height, then for weight, then for slant.' This variable can be
1685 set via set-face-font-sort-order. */
1687 static int font_sort_order[4];
1689 #ifdef HAVE_WINDOW_SYSTEM
1691 /* Return a rescaling ratio of a font of NAME. */
1693 static double
1694 font_rescale_ratio (name)
1695 char *name;
1697 Lisp_Object tail, elt;
1699 for (tail = Vface_font_rescale_alist; CONSP (tail); tail = XCDR (tail))
1701 elt = XCAR (tail);
1702 if (STRINGP (XCAR (elt)) && FLOATP (XCDR (elt))
1703 && fast_c_string_match_ignore_case (XCAR (elt), name) >= 0)
1704 return XFLOAT_DATA (XCDR (elt));
1706 return 1.0;
1709 static enum font_property_index font_props_for_sorting[FONT_SIZE_INDEX];
1711 static int
1712 compare_fonts_by_sort_order (v1, v2)
1713 const void *v1, *v2;
1715 Lisp_Object font1 = *(Lisp_Object *) v1;
1716 Lisp_Object font2 = *(Lisp_Object *) v2;
1717 int i;
1719 for (i = 0; i < FONT_SIZE_INDEX; i++)
1721 enum font_property_index idx = font_props_for_sorting[i];
1722 Lisp_Object val1 = AREF (font1, idx), val2 = AREF (font2, idx);
1723 int result;
1725 if (idx <= FONT_REGISTRY_INDEX)
1727 if (STRINGP (val1))
1728 result = STRINGP (val2) ? strcmp (SDATA (val1), SDATA (val2)) : -1;
1729 else
1730 result = STRINGP (val2) ? 1 : 0;
1732 else
1734 if (INTEGERP (val1))
1735 result = INTEGERP (val2) ? XINT (val1) - XINT (val2) : -1;
1736 else
1737 result = INTEGERP (val2) ? 1 : 0;
1739 if (result)
1740 return result;
1742 return 0;
1745 DEFUN ("x-family-fonts", Fx_family_fonts, Sx_family_fonts, 0, 2, 0,
1746 doc: /* Return a list of available fonts of family FAMILY on FRAME.
1747 If FAMILY is omitted or nil, list all families.
1748 Otherwise, FAMILY must be a string, possibly containing wildcards
1749 `?' and `*'.
1750 If FRAME is omitted or nil, use the selected frame.
1751 Each element of the result is a vector [FAMILY WIDTH POINT-SIZE WEIGHT
1752 SLANT FIXED-P FULL REGISTRY-AND-ENCODING].
1753 FAMILY is the font family name. POINT-SIZE is the size of the
1754 font in 1/10 pt. WIDTH, WEIGHT, and SLANT are symbols describing the
1755 width, weight and slant of the font. These symbols are the same as for
1756 face attributes. FIXED-P is non-nil if the font is fixed-pitch.
1757 FULL is the full name of the font, and REGISTRY-AND-ENCODING is a string
1758 giving the registry and encoding of the font.
1759 The result list is sorted according to the current setting of
1760 the face font sort order. */)
1761 (family, frame)
1762 Lisp_Object family, frame;
1764 Lisp_Object font_spec, vec;
1765 int i, nfonts;
1766 Lisp_Object result;
1768 if (NILP (frame))
1769 frame = selected_frame;
1770 CHECK_LIVE_FRAME (frame);
1772 font_spec = Ffont_spec (0, NULL);
1773 if (!NILP (family))
1775 CHECK_STRING (family);
1776 font_parse_family_registry (family, Qnil, font_spec);
1778 vec = font_list_entities (frame, font_spec);
1779 nfonts = ASIZE (vec);
1780 if (nfonts == 0)
1781 return Qnil;
1782 if (nfonts > 1)
1784 for (i = 0; i < 4; i++)
1785 switch (font_sort_order[i])
1787 case XLFD_SWIDTH:
1788 font_props_for_sorting[i] = FONT_WIDTH_INDEX; break;
1789 case XLFD_POINT_SIZE:
1790 font_props_for_sorting[i] = FONT_SIZE_INDEX; break;
1791 case XLFD_WEIGHT:
1792 font_props_for_sorting[i] = FONT_WEIGHT_INDEX; break;
1793 default:
1794 font_props_for_sorting[i] = FONT_SLANT_INDEX; break;
1796 font_props_for_sorting[i++] = FONT_FAMILY_INDEX;
1797 font_props_for_sorting[i++] = FONT_FOUNDRY_INDEX;
1798 font_props_for_sorting[i++] = FONT_ADSTYLE_INDEX;
1799 font_props_for_sorting[i++] = FONT_REGISTRY_INDEX;
1801 qsort (XVECTOR (vec)->contents, nfonts, sizeof (Lisp_Object),
1802 compare_fonts_by_sort_order);
1805 result = Qnil;
1806 for (i = nfonts - 1; i >= 0; --i)
1808 Lisp_Object font = AREF (vec, i);
1809 Lisp_Object v = Fmake_vector (make_number (8), Qnil);
1810 int point;
1811 Lisp_Object spacing;
1813 ASET (v, 0, AREF (font, FONT_FAMILY_INDEX));
1814 ASET (v, 1, FONT_WIDTH_SYMBOLIC (font));
1815 point = PIXEL_TO_POINT (XINT (AREF (font, FONT_SIZE_INDEX)) * 10,
1816 XFRAME (frame)->resy);
1817 ASET (v, 2, make_number (point));
1818 ASET (v, 3, FONT_WEIGHT_SYMBOLIC (font));
1819 ASET (v, 4, FONT_SLANT_SYMBOLIC (font));
1820 spacing = Ffont_get (font, QCspacing);
1821 ASET (v, 5, (NILP (spacing) || EQ (spacing, Qp)) ? Qnil : Qt);
1822 ASET (v, 6, Ffont_xlfd_name (font, Qnil));
1823 ASET (v, 7, AREF (font, FONT_REGISTRY_INDEX));
1825 result = Fcons (v, result);
1828 return result;
1831 DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 5, 0,
1832 doc: /* Return a list of the names of available fonts matching PATTERN.
1833 If optional arguments FACE and FRAME are specified, return only fonts
1834 the same size as FACE on FRAME.
1835 PATTERN is a string, perhaps with wildcard characters;
1836 the * character matches any substring, and
1837 the ? character matches any single character.
1838 PATTERN is case-insensitive.
1839 FACE is a face name--a symbol.
1841 The return value is a list of strings, suitable as arguments to
1842 `set-face-font'.
1844 Fonts Emacs can't use may or may not be excluded
1845 even if they match PATTERN and FACE.
1846 The optional fourth argument MAXIMUM sets a limit on how many
1847 fonts to match. The first MAXIMUM fonts are reported.
1848 The optional fifth argument WIDTH, if specified, is a number of columns
1849 occupied by a character of a font. In that case, return only fonts
1850 the WIDTH times as wide as FACE on FRAME. */)
1851 (pattern, face, frame, maximum, width)
1852 Lisp_Object pattern, face, frame, maximum, width;
1854 struct frame *f;
1855 int size, avgwidth;
1857 check_x ();
1858 CHECK_STRING (pattern);
1860 if (! NILP (maximum))
1861 CHECK_NATNUM (maximum);
1863 if (!NILP (width))
1864 CHECK_NUMBER (width);
1866 /* We can't simply call check_x_frame because this function may be
1867 called before any frame is created. */
1868 if (NILP (frame))
1869 frame = selected_frame;
1870 f = frame_or_selected_frame (frame, 2);
1871 if (! FRAME_WINDOW_P (f))
1873 /* Perhaps we have not yet created any frame. */
1874 f = NULL;
1875 frame = Qnil;
1876 face = Qnil;
1879 /* Determine the width standard for comparison with the fonts we find. */
1881 if (NILP (face))
1882 size = 0;
1883 else
1885 /* This is of limited utility since it works with character
1886 widths. Keep it for compatibility. --gerd. */
1887 int face_id = lookup_named_face (f, face, 0);
1888 struct face *face = (face_id < 0
1889 ? NULL
1890 : FACE_FROM_ID (f, face_id));
1892 if (face && face->font)
1894 size = face->font->pixel_size;
1895 avgwidth = face->font->average_width;
1897 else
1899 size = FRAME_FONT (f)->pixel_size;
1900 avgwidth = FRAME_FONT (f)->average_width;
1902 if (!NILP (width))
1903 avgwidth *= XINT (width);
1907 Lisp_Object font_spec;
1908 Lisp_Object args[2], tail;
1910 font_spec = font_spec_from_name (pattern);
1911 if (size)
1913 Ffont_put (font_spec, QCsize, make_number (size));
1914 Ffont_put (font_spec, QCavgwidth, make_number (avgwidth));
1916 args[0] = Flist_fonts (font_spec, frame, maximum, font_spec);
1917 for (tail = args[0]; CONSP (tail); tail = XCDR (tail))
1918 XSETCAR (tail, Ffont_xlfd_name (XCAR (tail), Qnil));
1919 if (NILP (frame))
1920 /* We don't have to check fontsets. */
1921 return args[0];
1922 args[1] = list_fontsets (f, pattern, size);
1923 return Fnconc (2, args);
1927 #endif /* HAVE_WINDOW_SYSTEM */
1929 #if defined(HAVE_WINDOW_SYSTEM) || defined(__MSDOS__)
1931 DEFUN ("x-font-family-list", Fx_font_family_list, Sx_font_family_list,
1932 0, 1, 0,
1933 doc: /* Return a list of available font families on FRAME.
1934 If FRAME is omitted or nil, use the selected frame.
1935 Value is a list of conses (FAMILY . FIXED-P) where FAMILY
1936 is a font family, and FIXED-P is non-nil if fonts of that family
1937 are fixed-pitch. */)
1938 (frame)
1939 Lisp_Object frame;
1941 #ifdef __MSDOS__
1942 return Fcons (Fcons (build_string ("default"), Qt), Qnil);
1943 #else
1944 return Ffont_family_list (frame);
1945 #endif
1948 #endif /* HAVE_WINDOW_SYSTEM || __MSDOS__ */
1951 /***********************************************************************
1952 Lisp Faces
1953 ***********************************************************************/
1955 /* Access face attributes of face LFACE, a Lisp vector. */
1957 #define LFACE_FAMILY(LFACE) AREF ((LFACE), LFACE_FAMILY_INDEX)
1958 #define LFACE_FOUNDRY(LFACE) AREF ((LFACE), LFACE_FOUNDRY_INDEX)
1959 #define LFACE_HEIGHT(LFACE) AREF ((LFACE), LFACE_HEIGHT_INDEX)
1960 #define LFACE_WEIGHT(LFACE) AREF ((LFACE), LFACE_WEIGHT_INDEX)
1961 #define LFACE_SLANT(LFACE) AREF ((LFACE), LFACE_SLANT_INDEX)
1962 #define LFACE_UNDERLINE(LFACE) AREF ((LFACE), LFACE_UNDERLINE_INDEX)
1963 #define LFACE_INVERSE(LFACE) AREF ((LFACE), LFACE_INVERSE_INDEX)
1964 #define LFACE_FOREGROUND(LFACE) AREF ((LFACE), LFACE_FOREGROUND_INDEX)
1965 #define LFACE_BACKGROUND(LFACE) AREF ((LFACE), LFACE_BACKGROUND_INDEX)
1966 #define LFACE_STIPPLE(LFACE) AREF ((LFACE), LFACE_STIPPLE_INDEX)
1967 #define LFACE_SWIDTH(LFACE) AREF ((LFACE), LFACE_SWIDTH_INDEX)
1968 #define LFACE_OVERLINE(LFACE) AREF ((LFACE), LFACE_OVERLINE_INDEX)
1969 #define LFACE_STRIKE_THROUGH(LFACE) AREF ((LFACE), LFACE_STRIKE_THROUGH_INDEX)
1970 #define LFACE_BOX(LFACE) AREF ((LFACE), LFACE_BOX_INDEX)
1971 #define LFACE_FONT(LFACE) AREF ((LFACE), LFACE_FONT_INDEX)
1972 #define LFACE_INHERIT(LFACE) AREF ((LFACE), LFACE_INHERIT_INDEX)
1973 #define LFACE_FONTSET(LFACE) AREF ((LFACE), LFACE_FONTSET_INDEX)
1975 /* Non-zero if LFACE is a Lisp face. A Lisp face is a vector of size
1976 LFACE_VECTOR_SIZE which has the symbol `face' in slot 0. */
1978 #define LFACEP(LFACE) \
1979 (VECTORP (LFACE) \
1980 && XVECTOR (LFACE)->size == LFACE_VECTOR_SIZE \
1981 && EQ (AREF (LFACE, 0), Qface))
1984 #if GLYPH_DEBUG
1986 /* Check consistency of Lisp face attribute vector ATTRS. */
1988 static void
1989 check_lface_attrs (attrs)
1990 Lisp_Object *attrs;
1992 xassert (UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
1993 || IGNORE_DEFFACE_P (attrs[LFACE_FAMILY_INDEX])
1994 || STRINGP (attrs[LFACE_FAMILY_INDEX]));
1995 xassert (UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
1996 || IGNORE_DEFFACE_P (attrs[LFACE_FOUNDRY_INDEX])
1997 || STRINGP (attrs[LFACE_FOUNDRY_INDEX]));
1998 xassert (UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX])
1999 || IGNORE_DEFFACE_P (attrs[LFACE_SWIDTH_INDEX])
2000 || SYMBOLP (attrs[LFACE_SWIDTH_INDEX]));
2001 xassert (UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
2002 || IGNORE_DEFFACE_P (attrs[LFACE_HEIGHT_INDEX])
2003 || INTEGERP (attrs[LFACE_HEIGHT_INDEX])
2004 || FLOATP (attrs[LFACE_HEIGHT_INDEX])
2005 || FUNCTIONP (attrs[LFACE_HEIGHT_INDEX]));
2006 xassert (UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX])
2007 || IGNORE_DEFFACE_P (attrs[LFACE_WEIGHT_INDEX])
2008 || SYMBOLP (attrs[LFACE_WEIGHT_INDEX]));
2009 xassert (UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX])
2010 || IGNORE_DEFFACE_P (attrs[LFACE_SLANT_INDEX])
2011 || SYMBOLP (attrs[LFACE_SLANT_INDEX]));
2012 xassert (UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX])
2013 || IGNORE_DEFFACE_P (attrs[LFACE_UNDERLINE_INDEX])
2014 || SYMBOLP (attrs[LFACE_UNDERLINE_INDEX])
2015 || STRINGP (attrs[LFACE_UNDERLINE_INDEX]));
2016 xassert (UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
2017 || IGNORE_DEFFACE_P (attrs[LFACE_OVERLINE_INDEX])
2018 || SYMBOLP (attrs[LFACE_OVERLINE_INDEX])
2019 || STRINGP (attrs[LFACE_OVERLINE_INDEX]));
2020 xassert (UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
2021 || IGNORE_DEFFACE_P (attrs[LFACE_STRIKE_THROUGH_INDEX])
2022 || SYMBOLP (attrs[LFACE_STRIKE_THROUGH_INDEX])
2023 || STRINGP (attrs[LFACE_STRIKE_THROUGH_INDEX]));
2024 xassert (UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
2025 || IGNORE_DEFFACE_P (attrs[LFACE_BOX_INDEX])
2026 || SYMBOLP (attrs[LFACE_BOX_INDEX])
2027 || STRINGP (attrs[LFACE_BOX_INDEX])
2028 || INTEGERP (attrs[LFACE_BOX_INDEX])
2029 || CONSP (attrs[LFACE_BOX_INDEX]));
2030 xassert (UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX])
2031 || IGNORE_DEFFACE_P (attrs[LFACE_INVERSE_INDEX])
2032 || SYMBOLP (attrs[LFACE_INVERSE_INDEX]));
2033 xassert (UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX])
2034 || IGNORE_DEFFACE_P (attrs[LFACE_FOREGROUND_INDEX])
2035 || STRINGP (attrs[LFACE_FOREGROUND_INDEX]));
2036 xassert (UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX])
2037 || IGNORE_DEFFACE_P (attrs[LFACE_BACKGROUND_INDEX])
2038 || STRINGP (attrs[LFACE_BACKGROUND_INDEX]));
2039 xassert (UNSPECIFIEDP (attrs[LFACE_INHERIT_INDEX])
2040 || IGNORE_DEFFACE_P (attrs[LFACE_INHERIT_INDEX])
2041 || NILP (attrs[LFACE_INHERIT_INDEX])
2042 || SYMBOLP (attrs[LFACE_INHERIT_INDEX])
2043 || CONSP (attrs[LFACE_INHERIT_INDEX]));
2044 #ifdef HAVE_WINDOW_SYSTEM
2045 xassert (UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
2046 || IGNORE_DEFFACE_P (attrs[LFACE_STIPPLE_INDEX])
2047 || SYMBOLP (attrs[LFACE_STIPPLE_INDEX])
2048 || !NILP (Fbitmap_spec_p (attrs[LFACE_STIPPLE_INDEX])));
2049 xassert (UNSPECIFIEDP (attrs[LFACE_FONT_INDEX])
2050 || IGNORE_DEFFACE_P (attrs[LFACE_FONT_INDEX])
2051 || FONTP (attrs[LFACE_FONT_INDEX]));
2052 xassert (UNSPECIFIEDP (attrs[LFACE_FONTSET_INDEX])
2053 || STRINGP (attrs[LFACE_FONTSET_INDEX]));
2054 #endif
2058 /* Check consistency of attributes of Lisp face LFACE (a Lisp vector). */
2060 static void
2061 check_lface (lface)
2062 Lisp_Object lface;
2064 if (!NILP (lface))
2066 xassert (LFACEP (lface));
2067 check_lface_attrs (XVECTOR (lface)->contents);
2071 #else /* GLYPH_DEBUG == 0 */
2073 #define check_lface_attrs(attrs) (void) 0
2074 #define check_lface(lface) (void) 0
2076 #endif /* GLYPH_DEBUG == 0 */
2080 /* Face-merge cycle checking. */
2082 enum named_merge_point_kind
2084 NAMED_MERGE_POINT_NORMAL,
2085 NAMED_MERGE_POINT_REMAP
2088 /* A `named merge point' is simply a point during face-merging where we
2089 look up a face by name. We keep a stack of which named lookups we're
2090 currently processing so that we can easily detect cycles, using a
2091 linked- list of struct named_merge_point structures, typically
2092 allocated on the stack frame of the named lookup functions which are
2093 active (so no consing is required). */
2094 struct named_merge_point
2096 Lisp_Object face_name;
2097 enum named_merge_point_kind named_merge_point_kind;
2098 struct named_merge_point *prev;
2102 /* If a face merging cycle is detected for FACE_NAME, return 0,
2103 otherwise add NEW_NAMED_MERGE_POINT, which is initialized using
2104 FACE_NAME and NAMED_MERGE_POINT_KIND, as the head of the linked list
2105 pointed to by NAMED_MERGE_POINTS, and return 1. */
2107 static INLINE int
2108 push_named_merge_point (struct named_merge_point *new_named_merge_point,
2109 Lisp_Object face_name,
2110 enum named_merge_point_kind named_merge_point_kind,
2111 struct named_merge_point **named_merge_points)
2113 struct named_merge_point *prev;
2115 for (prev = *named_merge_points; prev; prev = prev->prev)
2116 if (EQ (face_name, prev->face_name))
2118 if (prev->named_merge_point_kind == named_merge_point_kind)
2119 /* A cycle, so fail. */
2120 return 0;
2121 else if (prev->named_merge_point_kind == NAMED_MERGE_POINT_REMAP)
2122 /* A remap `hides ' any previous normal merge points
2123 (because the remap means that it's actually different face),
2124 so as we know the current merge point must be normal, we
2125 can just assume it's OK. */
2126 break;
2129 new_named_merge_point->face_name = face_name;
2130 new_named_merge_point->named_merge_point_kind = named_merge_point_kind;
2131 new_named_merge_point->prev = *named_merge_points;
2133 *named_merge_points = new_named_merge_point;
2135 return 1;
2140 #if 0 /* Seems to be unused. */
2141 static Lisp_Object
2142 internal_resolve_face_name (nargs, args)
2143 int nargs;
2144 Lisp_Object *args;
2146 return Fget (args[0], args[1]);
2149 static Lisp_Object
2150 resolve_face_name_error (ignore)
2151 Lisp_Object ignore;
2153 return Qnil;
2155 #endif
2157 /* Resolve face name FACE_NAME. If FACE_NAME is a string, intern it
2158 to make it a symbol. If FACE_NAME is an alias for another face,
2159 return that face's name.
2161 Return default face in case of errors. */
2163 static Lisp_Object
2164 resolve_face_name (face_name, signal_p)
2165 Lisp_Object face_name;
2166 int signal_p;
2168 Lisp_Object orig_face;
2169 Lisp_Object tortoise, hare;
2171 if (STRINGP (face_name))
2172 face_name = intern (SDATA (face_name));
2174 if (NILP (face_name) || !SYMBOLP (face_name))
2175 return face_name;
2177 orig_face = face_name;
2178 tortoise = hare = face_name;
2180 while (1)
2182 face_name = hare;
2183 hare = Fget (hare, Qface_alias);
2184 if (NILP (hare) || !SYMBOLP (hare))
2185 break;
2187 face_name = hare;
2188 hare = Fget (hare, Qface_alias);
2189 if (NILP (hare) || !SYMBOLP (hare))
2190 break;
2192 tortoise = Fget (tortoise, Qface_alias);
2193 if (EQ (hare, tortoise))
2195 if (signal_p)
2196 xsignal1 (Qcircular_list, orig_face);
2197 return Qdefault;
2201 return face_name;
2205 /* Return the face definition of FACE_NAME on frame F. F null means
2206 return the definition for new frames. FACE_NAME may be a string or
2207 a symbol (apparently Emacs 20.2 allowed strings as face names in
2208 face text properties; Ediff uses that). If SIGNAL_P is non-zero,
2209 signal an error if FACE_NAME is not a valid face name. If SIGNAL_P
2210 is zero, value is nil if FACE_NAME is not a valid face name. */
2211 static INLINE Lisp_Object
2212 lface_from_face_name_no_resolve (f, face_name, signal_p)
2213 struct frame *f;
2214 Lisp_Object face_name;
2215 int signal_p;
2217 Lisp_Object lface;
2219 if (f)
2220 lface = assq_no_quit (face_name, f->face_alist);
2221 else
2222 lface = assq_no_quit (face_name, Vface_new_frame_defaults);
2224 if (CONSP (lface))
2225 lface = XCDR (lface);
2226 else if (signal_p)
2227 signal_error ("Invalid face", face_name);
2229 check_lface (lface);
2231 return lface;
2234 /* Return the face definition of FACE_NAME on frame F. F null means
2235 return the definition for new frames. FACE_NAME may be a string or
2236 a symbol (apparently Emacs 20.2 allowed strings as face names in
2237 face text properties; Ediff uses that). If FACE_NAME is an alias
2238 for another face, return that face's definition. If SIGNAL_P is
2239 non-zero, signal an error if FACE_NAME is not a valid face name.
2240 If SIGNAL_P is zero, value is nil if FACE_NAME is not a valid face
2241 name. */
2242 static INLINE Lisp_Object
2243 lface_from_face_name (f, face_name, signal_p)
2244 struct frame *f;
2245 Lisp_Object face_name;
2246 int signal_p;
2248 face_name = resolve_face_name (face_name, signal_p);
2249 return lface_from_face_name_no_resolve (f, face_name, signal_p);
2253 /* Get face attributes of face FACE_NAME from frame-local faces on
2254 frame F. Store the resulting attributes in ATTRS which must point
2255 to a vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If SIGNAL_P
2256 is non-zero, signal an error if FACE_NAME does not name a face.
2257 Otherwise, value is zero if FACE_NAME is not a face. */
2259 static INLINE int
2260 get_lface_attributes_no_remap (f, face_name, attrs, signal_p)
2261 struct frame *f;
2262 Lisp_Object face_name;
2263 Lisp_Object *attrs;
2264 int signal_p;
2266 Lisp_Object lface;
2268 lface = lface_from_face_name_no_resolve (f, face_name, signal_p);
2270 if (! NILP (lface))
2271 bcopy (XVECTOR (lface)->contents, attrs,
2272 LFACE_VECTOR_SIZE * sizeof *attrs);
2274 return !NILP (lface);
2277 /* Get face attributes of face FACE_NAME from frame-local faces on frame
2278 F. Store the resulting attributes in ATTRS which must point to a
2279 vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If FACE_NAME is an
2280 alias for another face, use that face's definition. If SIGNAL_P is
2281 non-zero, signal an error if FACE_NAME does not name a face.
2282 Otherwise, value is zero if FACE_NAME is not a face. */
2284 static INLINE int
2285 get_lface_attributes (f, face_name, attrs, signal_p, named_merge_points)
2286 struct frame *f;
2287 Lisp_Object face_name;
2288 Lisp_Object *attrs;
2289 int signal_p;
2290 struct named_merge_point *named_merge_points;
2292 Lisp_Object face_remapping;
2294 face_name = resolve_face_name (face_name, signal_p);
2296 /* See if SYMBOL has been remapped to some other face (usually this
2297 is done buffer-locally). */
2298 face_remapping = assq_no_quit (face_name, Vface_remapping_alist);
2299 if (CONSP (face_remapping))
2301 struct named_merge_point named_merge_point;
2303 if (push_named_merge_point (&named_merge_point,
2304 face_name, NAMED_MERGE_POINT_REMAP,
2305 &named_merge_points))
2307 int i;
2309 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2310 attrs[i] = Qunspecified;
2312 return merge_face_ref (f, XCDR (face_remapping), attrs,
2313 signal_p, named_merge_points);
2317 /* Default case, no remapping. */
2318 return get_lface_attributes_no_remap (f, face_name, attrs, signal_p);
2322 /* Non-zero if all attributes in face attribute vector ATTRS are
2323 specified, i.e. are non-nil. */
2325 static int
2326 lface_fully_specified_p (attrs)
2327 Lisp_Object *attrs;
2329 int i;
2331 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2332 if (i != LFACE_FONT_INDEX && i != LFACE_INHERIT_INDEX)
2333 if ((UNSPECIFIEDP (attrs[i]) || IGNORE_DEFFACE_P (attrs[i])))
2334 break;
2336 return i == LFACE_VECTOR_SIZE;
2339 #ifdef HAVE_WINDOW_SYSTEM
2341 /* Set font-related attributes of Lisp face LFACE from FONT-OBJECT.
2342 If FORCE_P is zero, set only unspecified attributes of LFACE. The
2343 exception is `font' attribute. It is set to FONT_OBJECT regardless
2344 of FORCE_P. */
2346 static int
2347 set_lface_from_font (f, lface, font_object, force_p)
2348 struct frame *f;
2349 Lisp_Object lface, font_object;
2350 int force_p;
2352 Lisp_Object val;
2353 struct font *font = XFONT_OBJECT (font_object);
2355 /* Set attributes only if unspecified, otherwise face defaults for
2356 new frames would never take effect. If the font doesn't have a
2357 specific property, set a normal value for that. */
2359 if (force_p || UNSPECIFIEDP (LFACE_FAMILY (lface)))
2361 Lisp_Object family = AREF (font_object, FONT_FAMILY_INDEX);
2363 LFACE_FAMILY (lface) = SYMBOL_NAME (family);
2366 if (force_p || UNSPECIFIEDP (LFACE_FOUNDRY (lface)))
2368 Lisp_Object foundry = AREF (font_object, FONT_FOUNDRY_INDEX);
2370 LFACE_FOUNDRY (lface) = SYMBOL_NAME (foundry);
2373 if (force_p || UNSPECIFIEDP (LFACE_HEIGHT (lface)))
2375 int pt = PIXEL_TO_POINT (font->pixel_size * 10, f->resy);
2377 xassert (pt > 0);
2378 LFACE_HEIGHT (lface) = make_number (pt);
2381 if (force_p || UNSPECIFIEDP (LFACE_WEIGHT (lface)))
2383 val = FONT_WEIGHT_FOR_FACE (font_object);
2384 LFACE_WEIGHT (lface) = ! NILP (val) ? val :Qnormal;
2386 if (force_p || UNSPECIFIEDP (LFACE_SLANT (lface)))
2388 val = FONT_SLANT_FOR_FACE (font_object);
2389 LFACE_SLANT (lface) = ! NILP (val) ? val : Qnormal;
2391 if (force_p || UNSPECIFIEDP (LFACE_SWIDTH (lface)))
2393 val = FONT_WIDTH_FOR_FACE (font_object);
2394 LFACE_SWIDTH (lface) = ! NILP (val) ? val : Qnormal;
2397 LFACE_FONT (lface) = font_object;
2398 return 1;
2401 #endif /* HAVE_WINDOW_SYSTEM */
2404 /* Merges the face height FROM with the face height TO, and returns the
2405 merged height. If FROM is an invalid height, then INVALID is
2406 returned instead. FROM and TO may be either absolute face heights or
2407 `relative' heights; the returned value is always an absolute height
2408 unless both FROM and TO are relative. GCPRO is a lisp value that
2409 will be protected from garbage-collection if this function makes a
2410 call into lisp. */
2412 Lisp_Object
2413 merge_face_heights (from, to, invalid)
2414 Lisp_Object from, to, invalid;
2416 Lisp_Object result = invalid;
2418 if (INTEGERP (from))
2419 /* FROM is absolute, just use it as is. */
2420 result = from;
2421 else if (FLOATP (from))
2422 /* FROM is a scale, use it to adjust TO. */
2424 if (INTEGERP (to))
2425 /* relative X absolute => absolute */
2426 result = make_number ((EMACS_INT)(XFLOAT_DATA (from) * XINT (to)));
2427 else if (FLOATP (to))
2428 /* relative X relative => relative */
2429 result = make_float (XFLOAT_DATA (from) * XFLOAT_DATA (to));
2430 else if (UNSPECIFIEDP (to))
2431 result = from;
2433 else if (FUNCTIONP (from))
2434 /* FROM is a function, which use to adjust TO. */
2436 /* Call function with current height as argument.
2437 From is the new height. */
2438 Lisp_Object args[2];
2440 args[0] = from;
2441 args[1] = to;
2442 result = safe_call (2, args);
2444 /* Ensure that if TO was absolute, so is the result. */
2445 if (INTEGERP (to) && !INTEGERP (result))
2446 result = invalid;
2449 return result;
2453 /* Merge two Lisp face attribute vectors on frame F, FROM and TO, and
2454 store the resulting attributes in TO, which must be already be
2455 completely specified and contain only absolute attributes. Every
2456 specified attribute of FROM overrides the corresponding attribute of
2457 TO; relative attributes in FROM are merged with the absolute value in
2458 TO and replace it. NAMED_MERGE_POINTS is used internally to detect
2459 loops in face inheritance/remapping; it should be 0 when called from
2460 other places. */
2462 static INLINE void
2463 merge_face_vectors (f, from, to, named_merge_points)
2464 struct frame *f;
2465 Lisp_Object *from, *to;
2466 struct named_merge_point *named_merge_points;
2468 int i;
2470 /* If FROM inherits from some other faces, merge their attributes into
2471 TO before merging FROM's direct attributes. Note that an :inherit
2472 attribute of `unspecified' is the same as one of nil; we never
2473 merge :inherit attributes, so nil is more correct, but lots of
2474 other code uses `unspecified' as a generic value for face attributes. */
2475 if (!UNSPECIFIEDP (from[LFACE_INHERIT_INDEX])
2476 && !NILP (from[LFACE_INHERIT_INDEX]))
2477 merge_face_ref (f, from[LFACE_INHERIT_INDEX], to, 0, named_merge_points);
2479 i = LFACE_FONT_INDEX;
2480 if (!UNSPECIFIEDP (from[i]))
2482 if (!UNSPECIFIEDP (to[i]))
2483 to[i] = Fmerge_font_spec (from[i], to[i]);
2484 else
2485 to[i] = Fcopy_font_spec (from[i]);
2486 ASET (to[i], FONT_SIZE_INDEX, Qnil);
2489 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2490 if (!UNSPECIFIEDP (from[i]))
2492 if (i == LFACE_HEIGHT_INDEX && !INTEGERP (from[i]))
2494 to[i] = merge_face_heights (from[i], to[i], to[i]);
2495 font_clear_prop (to, FONT_SIZE_INDEX);
2497 else if (i != LFACE_FONT_INDEX)
2499 to[i] = from[i];
2500 if (i >= LFACE_FAMILY_INDEX && i <=LFACE_SLANT_INDEX)
2501 font_clear_prop (to,
2502 (i == LFACE_FAMILY_INDEX ? FONT_FAMILY_INDEX
2503 : i == LFACE_FOUNDRY_INDEX ? FONT_FOUNDRY_INDEX
2504 : i == LFACE_SWIDTH_INDEX ? FONT_WIDTH_INDEX
2505 : i == LFACE_HEIGHT_INDEX ? FONT_SIZE_INDEX
2506 : i == LFACE_WEIGHT_INDEX ? FONT_WEIGHT_INDEX
2507 : FONT_SLANT_INDEX));
2511 /* If `font' attribute is specified, reflect the font properties in
2512 it to the other attributes. */
2513 if (0 && !UNSPECIFIEDP (to[LFACE_FONT_INDEX]))
2514 font_update_lface (f, to);
2516 /* TO is always an absolute face, which should inherit from nothing.
2517 We blindly copy the :inherit attribute above and fix it up here. */
2518 to[LFACE_INHERIT_INDEX] = Qnil;
2521 /* Merge the named face FACE_NAME on frame F, into the vector of face
2522 attributes TO. NAMED_MERGE_POINTS is used to detect loops in face
2523 inheritance. Returns true if FACE_NAME is a valid face name and
2524 merging succeeded. */
2526 static int
2527 merge_named_face (f, face_name, to, named_merge_points)
2528 struct frame *f;
2529 Lisp_Object face_name;
2530 Lisp_Object *to;
2531 struct named_merge_point *named_merge_points;
2533 struct named_merge_point named_merge_point;
2535 if (push_named_merge_point (&named_merge_point,
2536 face_name, NAMED_MERGE_POINT_NORMAL,
2537 &named_merge_points))
2539 struct gcpro gcpro1;
2540 Lisp_Object from[LFACE_VECTOR_SIZE];
2541 int ok = get_lface_attributes (f, face_name, from, 0, named_merge_points);
2543 if (ok)
2545 GCPRO1 (named_merge_point.face_name);
2546 merge_face_vectors (f, from, to, named_merge_points);
2547 UNGCPRO;
2550 return ok;
2552 else
2553 return 0;
2557 /* Merge face attributes from the lisp `face reference' FACE_REF on
2558 frame F into the face attribute vector TO. If ERR_MSGS is non-zero,
2559 problems with FACE_REF cause an error message to be shown. Return
2560 non-zero if no errors occurred (regardless of the value of ERR_MSGS).
2561 NAMED_MERGE_POINTS is used to detect loops in face inheritance or
2562 list structure; it may be 0 for most callers.
2564 FACE_REF may be a single face specification or a list of such
2565 specifications. Each face specification can be:
2567 1. A symbol or string naming a Lisp face.
2569 2. A property list of the form (KEYWORD VALUE ...) where each
2570 KEYWORD is a face attribute name, and value is an appropriate value
2571 for that attribute.
2573 3. Conses or the form (FOREGROUND-COLOR . COLOR) or
2574 (BACKGROUND-COLOR . COLOR) where COLOR is a color name. This is
2575 for compatibility with 20.2.
2577 Face specifications earlier in lists take precedence over later
2578 specifications. */
2580 static int
2581 merge_face_ref (f, face_ref, to, err_msgs, named_merge_points)
2582 struct frame *f;
2583 Lisp_Object face_ref;
2584 Lisp_Object *to;
2585 int err_msgs;
2586 struct named_merge_point *named_merge_points;
2588 int ok = 1; /* Succeed without an error? */
2590 if (CONSP (face_ref))
2592 Lisp_Object first = XCAR (face_ref);
2594 if (EQ (first, Qforeground_color)
2595 || EQ (first, Qbackground_color))
2597 /* One of (FOREGROUND-COLOR . COLOR) or (BACKGROUND-COLOR
2598 . COLOR). COLOR must be a string. */
2599 Lisp_Object color_name = XCDR (face_ref);
2600 Lisp_Object color = first;
2602 if (STRINGP (color_name))
2604 if (EQ (color, Qforeground_color))
2605 to[LFACE_FOREGROUND_INDEX] = color_name;
2606 else
2607 to[LFACE_BACKGROUND_INDEX] = color_name;
2609 else
2611 if (err_msgs)
2612 add_to_log ("Invalid face color", color_name, Qnil);
2613 ok = 0;
2616 else if (SYMBOLP (first)
2617 && *SDATA (SYMBOL_NAME (first)) == ':')
2619 /* Assume this is the property list form. */
2620 while (CONSP (face_ref) && CONSP (XCDR (face_ref)))
2622 Lisp_Object keyword = XCAR (face_ref);
2623 Lisp_Object value = XCAR (XCDR (face_ref));
2624 int err = 0;
2626 /* Specifying `unspecified' is a no-op. */
2627 if (EQ (value, Qunspecified))
2629 else if (EQ (keyword, QCfamily))
2631 if (STRINGP (value))
2633 to[LFACE_FAMILY_INDEX] = value;
2634 font_clear_prop (to, FONT_FAMILY_INDEX);
2636 else
2637 err = 1;
2639 else if (EQ (keyword, QCfoundry))
2641 if (STRINGP (value))
2643 to[LFACE_FOUNDRY_INDEX] = value;
2644 font_clear_prop (to, FONT_FOUNDRY_INDEX);
2646 else
2647 err = 1;
2649 else if (EQ (keyword, QCheight))
2651 Lisp_Object new_height =
2652 merge_face_heights (value, to[LFACE_HEIGHT_INDEX], Qnil);
2654 if (! NILP (new_height))
2656 to[LFACE_HEIGHT_INDEX] = new_height;
2657 font_clear_prop (to, FONT_SIZE_INDEX);
2659 else
2660 err = 1;
2662 else if (EQ (keyword, QCweight))
2664 if (SYMBOLP (value) && FONT_WEIGHT_NAME_NUMERIC (value) >= 0)
2666 to[LFACE_WEIGHT_INDEX] = value;
2667 font_clear_prop (to, FONT_WEIGHT_INDEX);
2669 else
2670 err = 1;
2672 else if (EQ (keyword, QCslant))
2674 if (SYMBOLP (value) && FONT_SLANT_NAME_NUMERIC (value) >= 0)
2676 to[LFACE_SLANT_INDEX] = value;
2677 font_clear_prop (to, FONT_SLANT_INDEX);
2679 else
2680 err = 1;
2682 else if (EQ (keyword, QCunderline))
2684 if (EQ (value, Qt)
2685 || NILP (value)
2686 || STRINGP (value))
2687 to[LFACE_UNDERLINE_INDEX] = value;
2688 else
2689 err = 1;
2691 else if (EQ (keyword, QCoverline))
2693 if (EQ (value, Qt)
2694 || NILP (value)
2695 || STRINGP (value))
2696 to[LFACE_OVERLINE_INDEX] = value;
2697 else
2698 err = 1;
2700 else if (EQ (keyword, QCstrike_through))
2702 if (EQ (value, Qt)
2703 || NILP (value)
2704 || STRINGP (value))
2705 to[LFACE_STRIKE_THROUGH_INDEX] = value;
2706 else
2707 err = 1;
2709 else if (EQ (keyword, QCbox))
2711 if (EQ (value, Qt))
2712 value = make_number (1);
2713 if (INTEGERP (value)
2714 || STRINGP (value)
2715 || CONSP (value)
2716 || NILP (value))
2717 to[LFACE_BOX_INDEX] = value;
2718 else
2719 err = 1;
2721 else if (EQ (keyword, QCinverse_video)
2722 || EQ (keyword, QCreverse_video))
2724 if (EQ (value, Qt) || NILP (value))
2725 to[LFACE_INVERSE_INDEX] = value;
2726 else
2727 err = 1;
2729 else if (EQ (keyword, QCforeground))
2731 if (STRINGP (value))
2732 to[LFACE_FOREGROUND_INDEX] = value;
2733 else
2734 err = 1;
2736 else if (EQ (keyword, QCbackground))
2738 if (STRINGP (value))
2739 to[LFACE_BACKGROUND_INDEX] = value;
2740 else
2741 err = 1;
2743 else if (EQ (keyword, QCstipple))
2745 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
2746 Lisp_Object pixmap_p = Fbitmap_spec_p (value);
2747 if (!NILP (pixmap_p))
2748 to[LFACE_STIPPLE_INDEX] = value;
2749 else
2750 err = 1;
2751 #endif
2753 else if (EQ (keyword, QCwidth))
2755 if (SYMBOLP (value) && FONT_WIDTH_NAME_NUMERIC (value) >= 0)
2757 to[LFACE_SWIDTH_INDEX] = value;
2758 font_clear_prop (to, FONT_WIDTH_INDEX);
2760 else
2761 err = 1;
2763 else if (EQ (keyword, QCinherit))
2765 /* This is not really very useful; it's just like a
2766 normal face reference. */
2767 if (! merge_face_ref (f, value, to,
2768 err_msgs, named_merge_points))
2769 err = 1;
2771 else
2772 err = 1;
2774 if (err)
2776 add_to_log ("Invalid face attribute %S %S", keyword, value);
2777 ok = 0;
2780 face_ref = XCDR (XCDR (face_ref));
2783 else
2785 /* This is a list of face refs. Those at the beginning of the
2786 list take precedence over what follows, so we have to merge
2787 from the end backwards. */
2788 Lisp_Object next = XCDR (face_ref);
2790 if (! NILP (next))
2791 ok = merge_face_ref (f, next, to, err_msgs, named_merge_points);
2793 if (! merge_face_ref (f, first, to, err_msgs, named_merge_points))
2794 ok = 0;
2797 else
2799 /* FACE_REF ought to be a face name. */
2800 ok = merge_named_face (f, face_ref, to, named_merge_points);
2801 if (!ok && err_msgs)
2802 add_to_log ("Invalid face reference: %s", face_ref, Qnil);
2805 return ok;
2809 DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face,
2810 Sinternal_make_lisp_face, 1, 2, 0,
2811 doc: /* Make FACE, a symbol, a Lisp face with all attributes nil.
2812 If FACE was not known as a face before, create a new one.
2813 If optional argument FRAME is specified, make a frame-local face
2814 for that frame. Otherwise operate on the global face definition.
2815 Value is a vector of face attributes. */)
2816 (face, frame)
2817 Lisp_Object face, frame;
2819 Lisp_Object global_lface, lface;
2820 struct frame *f;
2821 int i;
2823 CHECK_SYMBOL (face);
2824 global_lface = lface_from_face_name (NULL, face, 0);
2826 if (!NILP (frame))
2828 CHECK_LIVE_FRAME (frame);
2829 f = XFRAME (frame);
2830 lface = lface_from_face_name (f, face, 0);
2832 else
2833 f = NULL, lface = Qnil;
2835 /* Add a global definition if there is none. */
2836 if (NILP (global_lface))
2838 global_lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
2839 Qunspecified);
2840 ASET (global_lface, 0, Qface);
2841 Vface_new_frame_defaults = Fcons (Fcons (face, global_lface),
2842 Vface_new_frame_defaults);
2844 /* Assign the new Lisp face a unique ID. The mapping from Lisp
2845 face id to Lisp face is given by the vector lface_id_to_name.
2846 The mapping from Lisp face to Lisp face id is given by the
2847 property `face' of the Lisp face name. */
2848 if (next_lface_id == lface_id_to_name_size)
2850 int new_size = max (50, 2 * lface_id_to_name_size);
2851 int sz = new_size * sizeof *lface_id_to_name;
2852 lface_id_to_name = (Lisp_Object *) xrealloc (lface_id_to_name, sz);
2853 lface_id_to_name_size = new_size;
2856 lface_id_to_name[next_lface_id] = face;
2857 Fput (face, Qface, make_number (next_lface_id));
2858 ++next_lface_id;
2860 else if (f == NULL)
2861 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2862 ASET (global_lface, i, Qunspecified);
2864 /* Add a frame-local definition. */
2865 if (f)
2867 if (NILP (lface))
2869 lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
2870 Qunspecified);
2871 ASET (lface, 0, Qface);
2872 f->face_alist = Fcons (Fcons (face, lface), f->face_alist);
2874 else
2875 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
2876 ASET (lface, i, Qunspecified);
2878 else
2879 lface = global_lface;
2881 /* Changing a named face means that all realized faces depending on
2882 that face are invalid. Since we cannot tell which realized faces
2883 depend on the face, make sure they are all removed. This is done
2884 by incrementing face_change_count. The next call to
2885 init_iterator will then free realized faces. */
2886 if (NILP (Fget (face, Qface_no_inherit)))
2888 ++face_change_count;
2889 ++windows_or_buffers_changed;
2892 xassert (LFACEP (lface));
2893 check_lface (lface);
2894 return lface;
2898 DEFUN ("internal-lisp-face-p", Finternal_lisp_face_p,
2899 Sinternal_lisp_face_p, 1, 2, 0,
2900 doc: /* Return non-nil if FACE names a face.
2901 If optional second argument FRAME is non-nil, check for the
2902 existence of a frame-local face with name FACE on that frame.
2903 Otherwise check for the existence of a global face. */)
2904 (face, frame)
2905 Lisp_Object face, frame;
2907 Lisp_Object lface;
2909 face = resolve_face_name (face, 1);
2911 if (!NILP (frame))
2913 CHECK_LIVE_FRAME (frame);
2914 lface = lface_from_face_name (XFRAME (frame), face, 0);
2916 else
2917 lface = lface_from_face_name (NULL, face, 0);
2919 return lface;
2923 DEFUN ("internal-copy-lisp-face", Finternal_copy_lisp_face,
2924 Sinternal_copy_lisp_face, 4, 4, 0,
2925 doc: /* Copy face FROM to TO.
2926 If FRAME is t, copy the global face definition of FROM.
2927 Otherwise, copy the frame-local definition of FROM on FRAME.
2928 If NEW-FRAME is a frame, copy that data into the frame-local
2929 definition of TO on NEW-FRAME. If NEW-FRAME is nil,
2930 FRAME controls where the data is copied to.
2932 The value is TO. */)
2933 (from, to, frame, new_frame)
2934 Lisp_Object from, to, frame, new_frame;
2936 Lisp_Object lface, copy;
2938 CHECK_SYMBOL (from);
2939 CHECK_SYMBOL (to);
2941 if (EQ (frame, Qt))
2943 /* Copy global definition of FROM. We don't make copies of
2944 strings etc. because 20.2 didn't do it either. */
2945 lface = lface_from_face_name (NULL, from, 1);
2946 copy = Finternal_make_lisp_face (to, Qnil);
2948 else
2950 /* Copy frame-local definition of FROM. */
2951 if (NILP (new_frame))
2952 new_frame = frame;
2953 CHECK_LIVE_FRAME (frame);
2954 CHECK_LIVE_FRAME (new_frame);
2955 lface = lface_from_face_name (XFRAME (frame), from, 1);
2956 copy = Finternal_make_lisp_face (to, new_frame);
2959 bcopy (XVECTOR (lface)->contents, XVECTOR (copy)->contents,
2960 LFACE_VECTOR_SIZE * sizeof (Lisp_Object));
2962 /* Changing a named face means that all realized faces depending on
2963 that face are invalid. Since we cannot tell which realized faces
2964 depend on the face, make sure they are all removed. This is done
2965 by incrementing face_change_count. The next call to
2966 init_iterator will then free realized faces. */
2967 if (NILP (Fget (to, Qface_no_inherit)))
2969 ++face_change_count;
2970 ++windows_or_buffers_changed;
2973 return to;
2977 DEFUN ("internal-set-lisp-face-attribute", Finternal_set_lisp_face_attribute,
2978 Sinternal_set_lisp_face_attribute, 3, 4, 0,
2979 doc: /* Set attribute ATTR of FACE to VALUE.
2980 FRAME being a frame means change the face on that frame.
2981 FRAME nil means change the face of the selected frame.
2982 FRAME t means change the default for new frames.
2983 FRAME 0 means change the face on all frames, and change the default
2984 for new frames. */)
2985 (face, attr, value, frame)
2986 Lisp_Object face, attr, value, frame;
2988 Lisp_Object lface;
2989 Lisp_Object old_value = Qnil;
2990 /* Set one of enum font_property_index (> 0) if ATTR is one of
2991 font-related attributes other than QCfont and QCfontset. */
2992 enum font_property_index prop_index = 0;
2994 CHECK_SYMBOL (face);
2995 CHECK_SYMBOL (attr);
2997 face = resolve_face_name (face, 1);
2999 /* If FRAME is 0, change face on all frames, and change the
3000 default for new frames. */
3001 if (INTEGERP (frame) && XINT (frame) == 0)
3003 Lisp_Object tail;
3004 Finternal_set_lisp_face_attribute (face, attr, value, Qt);
3005 FOR_EACH_FRAME (tail, frame)
3006 Finternal_set_lisp_face_attribute (face, attr, value, frame);
3007 return face;
3010 /* Set lface to the Lisp attribute vector of FACE. */
3011 if (EQ (frame, Qt))
3013 lface = lface_from_face_name (NULL, face, 1);
3015 /* When updating face-new-frame-defaults, we put :ignore-defface
3016 where the caller wants `unspecified'. This forces the frame
3017 defaults to ignore the defface value. Otherwise, the defface
3018 will take effect, which is generally not what is intended.
3019 The value of that attribute will be inherited from some other
3020 face during face merging. See internal_merge_in_global_face. */
3021 if (UNSPECIFIEDP (value))
3022 value = Qignore_defface;
3024 else
3026 if (NILP (frame))
3027 frame = selected_frame;
3029 CHECK_LIVE_FRAME (frame);
3030 lface = lface_from_face_name (XFRAME (frame), face, 0);
3032 /* If a frame-local face doesn't exist yet, create one. */
3033 if (NILP (lface))
3034 lface = Finternal_make_lisp_face (face, frame);
3037 if (EQ (attr, QCfamily))
3039 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3041 CHECK_STRING (value);
3042 if (SCHARS (value) == 0)
3043 signal_error ("Invalid face family", value);
3045 old_value = LFACE_FAMILY (lface);
3046 LFACE_FAMILY (lface) = value;
3047 prop_index = FONT_FAMILY_INDEX;
3049 else if (EQ (attr, QCfoundry))
3051 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3053 CHECK_STRING (value);
3054 if (SCHARS (value) == 0)
3055 signal_error ("Invalid face foundry", value);
3057 old_value = LFACE_FOUNDRY (lface);
3058 LFACE_FOUNDRY (lface) = value;
3059 prop_index = FONT_FOUNDRY_INDEX;
3061 else if (EQ (attr, QCheight))
3063 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3065 Lisp_Object test;
3067 test = (EQ (face, Qdefault)
3068 ? value
3069 /* The default face must have an absolute size,
3070 otherwise, we do a test merge with a random
3071 height to see if VALUE's ok. */
3072 : merge_face_heights (value, make_number (10), Qnil));
3074 if (!INTEGERP (test) || XINT (test) <= 0)
3075 signal_error ("Invalid face height", value);
3078 old_value = LFACE_HEIGHT (lface);
3079 LFACE_HEIGHT (lface) = value;
3080 prop_index = FONT_SIZE_INDEX;
3082 else if (EQ (attr, QCweight))
3084 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3086 CHECK_SYMBOL (value);
3087 if (FONT_WEIGHT_NAME_NUMERIC (value) < 0)
3088 signal_error ("Invalid face weight", value);
3090 old_value = LFACE_WEIGHT (lface);
3091 LFACE_WEIGHT (lface) = value;
3092 prop_index = FONT_WEIGHT_INDEX;
3094 else if (EQ (attr, QCslant))
3096 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3098 CHECK_SYMBOL (value);
3099 if (FONT_SLANT_NAME_NUMERIC (value) < 0)
3100 signal_error ("Invalid face slant", value);
3102 old_value = LFACE_SLANT (lface);
3103 LFACE_SLANT (lface) = value;
3104 prop_index = FONT_SLANT_INDEX;
3106 else if (EQ (attr, QCunderline))
3108 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3109 if ((SYMBOLP (value)
3110 && !EQ (value, Qt)
3111 && !EQ (value, Qnil))
3112 /* Underline color. */
3113 || (STRINGP (value)
3114 && SCHARS (value) == 0))
3115 signal_error ("Invalid face underline", value);
3117 old_value = LFACE_UNDERLINE (lface);
3118 LFACE_UNDERLINE (lface) = value;
3120 else if (EQ (attr, QCoverline))
3122 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3123 if ((SYMBOLP (value)
3124 && !EQ (value, Qt)
3125 && !EQ (value, Qnil))
3126 /* Overline color. */
3127 || (STRINGP (value)
3128 && SCHARS (value) == 0))
3129 signal_error ("Invalid face overline", value);
3131 old_value = LFACE_OVERLINE (lface);
3132 LFACE_OVERLINE (lface) = value;
3134 else if (EQ (attr, QCstrike_through))
3136 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3137 if ((SYMBOLP (value)
3138 && !EQ (value, Qt)
3139 && !EQ (value, Qnil))
3140 /* Strike-through color. */
3141 || (STRINGP (value)
3142 && SCHARS (value) == 0))
3143 signal_error ("Invalid face strike-through", value);
3145 old_value = LFACE_STRIKE_THROUGH (lface);
3146 LFACE_STRIKE_THROUGH (lface) = value;
3148 else if (EQ (attr, QCbox))
3150 int valid_p;
3152 /* Allow t meaning a simple box of width 1 in foreground color
3153 of the face. */
3154 if (EQ (value, Qt))
3155 value = make_number (1);
3157 if (UNSPECIFIEDP (value) || IGNORE_DEFFACE_P (value))
3158 valid_p = 1;
3159 else if (NILP (value))
3160 valid_p = 1;
3161 else if (INTEGERP (value))
3162 valid_p = XINT (value) != 0;
3163 else if (STRINGP (value))
3164 valid_p = SCHARS (value) > 0;
3165 else if (CONSP (value))
3167 Lisp_Object tem;
3169 tem = value;
3170 while (CONSP (tem))
3172 Lisp_Object k, v;
3174 k = XCAR (tem);
3175 tem = XCDR (tem);
3176 if (!CONSP (tem))
3177 break;
3178 v = XCAR (tem);
3179 tem = XCDR (tem);
3181 if (EQ (k, QCline_width))
3183 if (!INTEGERP (v) || XINT (v) == 0)
3184 break;
3186 else if (EQ (k, QCcolor))
3188 if (!NILP (v) && (!STRINGP (v) || SCHARS (v) == 0))
3189 break;
3191 else if (EQ (k, QCstyle))
3193 if (!EQ (v, Qpressed_button) && !EQ (v, Qreleased_button))
3194 break;
3196 else
3197 break;
3200 valid_p = NILP (tem);
3202 else
3203 valid_p = 0;
3205 if (!valid_p)
3206 signal_error ("Invalid face box", value);
3208 old_value = LFACE_BOX (lface);
3209 LFACE_BOX (lface) = value;
3211 else if (EQ (attr, QCinverse_video)
3212 || EQ (attr, QCreverse_video))
3214 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3216 CHECK_SYMBOL (value);
3217 if (!EQ (value, Qt) && !NILP (value))
3218 signal_error ("Invalid inverse-video face attribute value", value);
3220 old_value = LFACE_INVERSE (lface);
3221 LFACE_INVERSE (lface) = value;
3223 else if (EQ (attr, QCforeground))
3225 /* Compatibility with 20.x. */
3226 if (NILP (value))
3227 value = Qunspecified;
3228 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3230 /* Don't check for valid color names here because it depends
3231 on the frame (display) whether the color will be valid
3232 when the face is realized. */
3233 CHECK_STRING (value);
3234 if (SCHARS (value) == 0)
3235 signal_error ("Empty foreground color value", value);
3237 old_value = LFACE_FOREGROUND (lface);
3238 LFACE_FOREGROUND (lface) = value;
3240 else if (EQ (attr, QCbackground))
3242 /* Compatibility with 20.x. */
3243 if (NILP (value))
3244 value = Qunspecified;
3245 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3247 /* Don't check for valid color names here because it depends
3248 on the frame (display) whether the color will be valid
3249 when the face is realized. */
3250 CHECK_STRING (value);
3251 if (SCHARS (value) == 0)
3252 signal_error ("Empty background color value", value);
3254 old_value = LFACE_BACKGROUND (lface);
3255 LFACE_BACKGROUND (lface) = value;
3257 else if (EQ (attr, QCstipple))
3259 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
3260 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value)
3261 && !NILP (value)
3262 && NILP (Fbitmap_spec_p (value)))
3263 signal_error ("Invalid stipple attribute", value);
3264 old_value = LFACE_STIPPLE (lface);
3265 LFACE_STIPPLE (lface) = value;
3266 #endif /* HAVE_X_WINDOWS || HAVE_NS */
3268 else if (EQ (attr, QCwidth))
3270 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3272 CHECK_SYMBOL (value);
3273 if (FONT_WIDTH_NAME_NUMERIC (value) < 0)
3274 signal_error ("Invalid face width", value);
3276 old_value = LFACE_SWIDTH (lface);
3277 LFACE_SWIDTH (lface) = value;
3278 prop_index = FONT_WIDTH_INDEX;
3280 else if (EQ (attr, QCfont))
3282 #ifdef HAVE_WINDOW_SYSTEM
3283 if (EQ (frame, Qt) || FRAME_WINDOW_P (XFRAME (frame)))
3285 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value))
3287 FRAME_PTR f;
3289 old_value = LFACE_FONT (lface);
3290 if (! FONTP (value))
3292 if (STRINGP (value))
3294 int fontset = fs_query_fontset (value, 0);
3296 if (fontset >= 0)
3297 value = fontset_ascii (fontset);
3298 value = font_spec_from_name (value);
3300 else
3301 signal_error ("Invalid font or font-spec", value);
3303 if (EQ (frame, Qt))
3304 f = XFRAME (selected_frame);
3305 else
3306 f = XFRAME (frame);
3307 if (! FONT_OBJECT_P (value))
3309 Lisp_Object *attrs = XVECTOR (lface)->contents;
3310 Lisp_Object font_object;
3312 font_object = font_load_for_lface (f, attrs, value);
3313 if (NILP (font_object))
3314 signal_error ("Font not available", value);
3315 value = font_object;
3317 set_lface_from_font (f, lface, value, 1);
3319 else
3320 LFACE_FONT (lface) = value;
3322 #endif /* HAVE_WINDOW_SYSTEM */
3324 else if (EQ (attr, QCfontset))
3326 #ifdef HAVE_WINDOW_SYSTEM
3327 if (EQ (frame, Qt) || FRAME_WINDOW_P (XFRAME (frame)))
3329 Lisp_Object tmp;
3331 old_value = LFACE_FONTSET (lface);
3332 tmp = Fquery_fontset (value, Qnil);
3333 if (NILP (tmp))
3334 signal_error ("Invalid fontset name", value);
3335 LFACE_FONTSET (lface) = value = tmp;
3337 #endif /* HAVE_WINDOW_SYSTEM */
3339 else if (EQ (attr, QCinherit))
3341 Lisp_Object tail;
3342 if (SYMBOLP (value))
3343 tail = Qnil;
3344 else
3345 for (tail = value; CONSP (tail); tail = XCDR (tail))
3346 if (!SYMBOLP (XCAR (tail)))
3347 break;
3348 if (NILP (tail))
3349 LFACE_INHERIT (lface) = value;
3350 else
3351 signal_error ("Invalid face inheritance", value);
3353 else if (EQ (attr, QCbold))
3355 old_value = LFACE_WEIGHT (lface);
3356 LFACE_WEIGHT (lface) = NILP (value) ? Qnormal : Qbold;
3357 prop_index = FONT_WEIGHT_INDEX;
3359 else if (EQ (attr, QCitalic))
3361 attr = QCslant;
3362 old_value = LFACE_SLANT (lface);
3363 LFACE_SLANT (lface) = NILP (value) ? Qnormal : Qitalic;
3364 prop_index = FONT_SLANT_INDEX;
3366 else
3367 signal_error ("Invalid face attribute name", attr);
3369 if (prop_index)
3371 /* If a font-related attribute other than QCfont and QCfontset
3372 is specified, and if the original QCfont attribute has a font
3373 (font-spec or font-object), set the corresponding property in
3374 the font to nil so that the font selector doesn't think that
3375 the attribute is mandatory. Also, clear the average
3376 width. */
3377 font_clear_prop (XVECTOR (lface)->contents, prop_index);
3380 /* Changing a named face means that all realized faces depending on
3381 that face are invalid. Since we cannot tell which realized faces
3382 depend on the face, make sure they are all removed. This is done
3383 by incrementing face_change_count. The next call to
3384 init_iterator will then free realized faces. */
3385 if (!EQ (frame, Qt)
3386 && NILP (Fget (face, Qface_no_inherit))
3387 && NILP (Fequal (old_value, value)))
3389 ++face_change_count;
3390 ++windows_or_buffers_changed;
3393 if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value)
3394 && NILP (Fequal (old_value, value)))
3396 Lisp_Object param;
3398 param = Qnil;
3400 if (EQ (face, Qdefault))
3402 #ifdef HAVE_WINDOW_SYSTEM
3403 /* Changed font-related attributes of the `default' face are
3404 reflected in changed `font' frame parameters. */
3405 if (FRAMEP (frame)
3406 && (prop_index || EQ (attr, QCfont))
3407 && lface_fully_specified_p (XVECTOR (lface)->contents))
3408 set_font_frame_param (frame, lface);
3409 else
3410 #endif /* HAVE_WINDOW_SYSTEM */
3412 if (EQ (attr, QCforeground))
3413 param = Qforeground_color;
3414 else if (EQ (attr, QCbackground))
3415 param = Qbackground_color;
3417 #ifdef HAVE_WINDOW_SYSTEM
3418 #ifndef WINDOWSNT
3419 else if (EQ (face, Qscroll_bar))
3421 /* Changing the colors of `scroll-bar' sets frame parameters
3422 `scroll-bar-foreground' and `scroll-bar-background'. */
3423 if (EQ (attr, QCforeground))
3424 param = Qscroll_bar_foreground;
3425 else if (EQ (attr, QCbackground))
3426 param = Qscroll_bar_background;
3428 #endif /* not WINDOWSNT */
3429 else if (EQ (face, Qborder))
3431 /* Changing background color of `border' sets frame parameter
3432 `border-color'. */
3433 if (EQ (attr, QCbackground))
3434 param = Qborder_color;
3436 else if (EQ (face, Qcursor))
3438 /* Changing background color of `cursor' sets frame parameter
3439 `cursor-color'. */
3440 if (EQ (attr, QCbackground))
3441 param = Qcursor_color;
3443 else if (EQ (face, Qmouse))
3445 /* Changing background color of `mouse' sets frame parameter
3446 `mouse-color'. */
3447 if (EQ (attr, QCbackground))
3448 param = Qmouse_color;
3450 #endif /* HAVE_WINDOW_SYSTEM */
3451 else if (EQ (face, Qmenu))
3453 /* Indicate that we have to update the menu bar when
3454 realizing faces on FRAME. FRAME t change the
3455 default for new frames. We do this by setting
3456 setting the flag in new face caches */
3457 if (FRAMEP (frame))
3459 struct frame *f = XFRAME (frame);
3460 if (FRAME_FACE_CACHE (f) == NULL)
3461 FRAME_FACE_CACHE (f) = make_face_cache (f);
3462 FRAME_FACE_CACHE (f)->menu_face_changed_p = 1;
3464 else
3465 menu_face_changed_default = 1;
3468 if (!NILP (param))
3470 if (EQ (frame, Qt))
3471 /* Update `default-frame-alist', which is used for new frames. */
3473 store_in_alist (&Vdefault_frame_alist, param, value);
3475 else
3476 /* Update the current frame's parameters. */
3478 Lisp_Object cons;
3479 cons = XCAR (Vparam_value_alist);
3480 XSETCAR (cons, param);
3481 XSETCDR (cons, value);
3482 Fmodify_frame_parameters (frame, Vparam_value_alist);
3487 return face;
3491 #ifdef HAVE_WINDOW_SYSTEM
3493 /* Set the `font' frame parameter of FRAME determined from the
3494 font-object set in `default' face attributes LFACE. */
3496 static void
3497 set_font_frame_param (frame, lface)
3498 Lisp_Object frame, lface;
3500 struct frame *f = XFRAME (frame);
3501 Lisp_Object font;
3503 if (FRAME_WINDOW_P (f)
3504 /* Don't do anything if the font is `unspecified'. This can
3505 happen during frame creation. */
3506 && (font = LFACE_FONT (lface),
3507 ! UNSPECIFIEDP (font)))
3509 if (FONT_SPEC_P (font))
3511 font = font_load_for_lface (f, XVECTOR (lface)->contents, font);
3512 if (NILP (font))
3513 return;
3514 LFACE_FONT (lface) = font;
3516 f->default_face_done_p = 0;
3517 Fmodify_frame_parameters (frame, Fcons (Fcons (Qfont, font), Qnil));
3522 /* Update the corresponding face when frame parameter PARAM on frame F
3523 has been assigned the value NEW_VALUE. */
3525 void
3526 update_face_from_frame_parameter (f, param, new_value)
3527 struct frame *f;
3528 Lisp_Object param, new_value;
3530 Lisp_Object face = Qnil;
3531 Lisp_Object lface;
3533 /* If there are no faces yet, give up. This is the case when called
3534 from Fx_create_frame, and we do the necessary things later in
3535 face-set-after-frame-defaults. */
3536 if (NILP (f->face_alist))
3537 return;
3539 if (EQ (param, Qforeground_color))
3541 face = Qdefault;
3542 lface = lface_from_face_name (f, face, 1);
3543 LFACE_FOREGROUND (lface) = (STRINGP (new_value)
3544 ? new_value : Qunspecified);
3545 realize_basic_faces (f);
3547 else if (EQ (param, Qbackground_color))
3549 Lisp_Object frame;
3551 /* Changing the background color might change the background
3552 mode, so that we have to load new defface specs.
3553 Call frame-update-face-colors to do that. */
3554 XSETFRAME (frame, f);
3555 call1 (Qframe_set_background_mode, frame);
3557 face = Qdefault;
3558 lface = lface_from_face_name (f, face, 1);
3559 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3560 ? new_value : Qunspecified);
3561 realize_basic_faces (f);
3563 else if (EQ (param, Qborder_color))
3565 face = Qborder;
3566 lface = lface_from_face_name (f, face, 1);
3567 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3568 ? new_value : Qunspecified);
3570 else if (EQ (param, Qcursor_color))
3572 face = Qcursor;
3573 lface = lface_from_face_name (f, face, 1);
3574 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3575 ? new_value : Qunspecified);
3577 else if (EQ (param, Qmouse_color))
3579 face = Qmouse;
3580 lface = lface_from_face_name (f, face, 1);
3581 LFACE_BACKGROUND (lface) = (STRINGP (new_value)
3582 ? new_value : Qunspecified);
3585 /* Changing a named face means that all realized faces depending on
3586 that face are invalid. Since we cannot tell which realized faces
3587 depend on the face, make sure they are all removed. This is done
3588 by incrementing face_change_count. The next call to
3589 init_iterator will then free realized faces. */
3590 if (!NILP (face)
3591 && NILP (Fget (face, Qface_no_inherit)))
3593 ++face_change_count;
3594 ++windows_or_buffers_changed;
3599 /* Get the value of X resource RESOURCE, class CLASS for the display
3600 of frame FRAME. This is here because ordinary `x-get-resource'
3601 doesn't take a frame argument. */
3603 DEFUN ("internal-face-x-get-resource", Finternal_face_x_get_resource,
3604 Sinternal_face_x_get_resource, 3, 3, 0, doc: /* */)
3605 (resource, class, frame)
3606 Lisp_Object resource, class, frame;
3608 Lisp_Object value = Qnil;
3609 CHECK_STRING (resource);
3610 CHECK_STRING (class);
3611 CHECK_LIVE_FRAME (frame);
3612 BLOCK_INPUT;
3613 value = display_x_get_resource (FRAME_X_DISPLAY_INFO (XFRAME (frame)),
3614 resource, class, Qnil, Qnil);
3615 UNBLOCK_INPUT;
3616 return value;
3620 /* Return resource string VALUE as a boolean value, i.e. nil, or t.
3621 If VALUE is "on" or "true", return t. If VALUE is "off" or
3622 "false", return nil. Otherwise, if SIGNAL_P is non-zero, signal an
3623 error; if SIGNAL_P is zero, return 0. */
3625 static Lisp_Object
3626 face_boolean_x_resource_value (value, signal_p)
3627 Lisp_Object value;
3628 int signal_p;
3630 Lisp_Object result = make_number (0);
3632 xassert (STRINGP (value));
3634 if (xstrcasecmp (SDATA (value), "on") == 0
3635 || xstrcasecmp (SDATA (value), "true") == 0)
3636 result = Qt;
3637 else if (xstrcasecmp (SDATA (value), "off") == 0
3638 || xstrcasecmp (SDATA (value), "false") == 0)
3639 result = Qnil;
3640 else if (xstrcasecmp (SDATA (value), "unspecified") == 0)
3641 result = Qunspecified;
3642 else if (signal_p)
3643 signal_error ("Invalid face attribute value from X resource", value);
3645 return result;
3649 DEFUN ("internal-set-lisp-face-attribute-from-resource",
3650 Finternal_set_lisp_face_attribute_from_resource,
3651 Sinternal_set_lisp_face_attribute_from_resource,
3652 3, 4, 0, doc: /* */)
3653 (face, attr, value, frame)
3654 Lisp_Object face, attr, value, frame;
3656 CHECK_SYMBOL (face);
3657 CHECK_SYMBOL (attr);
3658 CHECK_STRING (value);
3660 if (xstrcasecmp (SDATA (value), "unspecified") == 0)
3661 value = Qunspecified;
3662 else if (EQ (attr, QCheight))
3664 value = Fstring_to_number (value, make_number (10));
3665 if (XINT (value) <= 0)
3666 signal_error ("Invalid face height from X resource", value);
3668 else if (EQ (attr, QCbold) || EQ (attr, QCitalic))
3669 value = face_boolean_x_resource_value (value, 1);
3670 else if (EQ (attr, QCweight) || EQ (attr, QCslant) || EQ (attr, QCwidth))
3671 value = intern (SDATA (value));
3672 else if (EQ (attr, QCreverse_video) || EQ (attr, QCinverse_video))
3673 value = face_boolean_x_resource_value (value, 1);
3674 else if (EQ (attr, QCunderline)
3675 || EQ (attr, QCoverline)
3676 || EQ (attr, QCstrike_through))
3678 Lisp_Object boolean_value;
3680 /* If the result of face_boolean_x_resource_value is t or nil,
3681 VALUE does NOT specify a color. */
3682 boolean_value = face_boolean_x_resource_value (value, 0);
3683 if (SYMBOLP (boolean_value))
3684 value = boolean_value;
3686 else if (EQ (attr, QCbox) || EQ (attr, QCinherit))
3687 value = Fcar (Fread_from_string (value, Qnil, Qnil));
3689 return Finternal_set_lisp_face_attribute (face, attr, value, frame);
3692 #endif /* HAVE_WINDOW_SYSTEM */
3695 /***********************************************************************
3696 Menu face
3697 ***********************************************************************/
3699 #if defined HAVE_X_WINDOWS && defined USE_X_TOOLKIT
3701 /* Make menus on frame F appear as specified by the `menu' face. */
3703 static void
3704 x_update_menu_appearance (f)
3705 struct frame *f;
3707 struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
3708 XrmDatabase rdb;
3710 if (dpyinfo
3711 && (rdb = XrmGetDatabase (FRAME_X_DISPLAY (f)),
3712 rdb != NULL))
3714 char line[512];
3715 Lisp_Object lface = lface_from_face_name (f, Qmenu, 1);
3716 struct face *face = FACE_FROM_ID (f, MENU_FACE_ID);
3717 const char *myname = SDATA (Vx_resource_name);
3718 int changed_p = 0;
3719 #ifdef USE_MOTIF
3720 const char *popup_path = "popup_menu";
3721 #else
3722 const char *popup_path = "menu.popup";
3723 #endif
3725 if (STRINGP (LFACE_FOREGROUND (lface)))
3727 sprintf (line, "%s.%s*foreground: %s",
3728 myname, popup_path,
3729 SDATA (LFACE_FOREGROUND (lface)));
3730 XrmPutLineResource (&rdb, line);
3731 sprintf (line, "%s.pane.menubar*foreground: %s",
3732 myname, SDATA (LFACE_FOREGROUND (lface)));
3733 XrmPutLineResource (&rdb, line);
3734 changed_p = 1;
3737 if (STRINGP (LFACE_BACKGROUND (lface)))
3739 sprintf (line, "%s.%s*background: %s",
3740 myname, popup_path,
3741 SDATA (LFACE_BACKGROUND (lface)));
3742 XrmPutLineResource (&rdb, line);
3743 sprintf (line, "%s.pane.menubar*background: %s",
3744 myname, SDATA (LFACE_BACKGROUND (lface)));
3745 XrmPutLineResource (&rdb, line);
3746 changed_p = 1;
3749 if (face->font
3750 /* On Solaris 5.8, it's been reported that the `menu' face
3751 can be unspecified here, during startup. Why this
3752 happens remains unknown. -- cyd */
3753 && FONTP (LFACE_FONT (lface))
3754 && (!UNSPECIFIEDP (LFACE_FAMILY (lface))
3755 || !UNSPECIFIEDP (LFACE_FOUNDRY (lface))
3756 || !UNSPECIFIEDP (LFACE_SWIDTH (lface))
3757 || !UNSPECIFIEDP (LFACE_WEIGHT (lface))
3758 || !UNSPECIFIEDP (LFACE_SLANT (lface))
3759 || !UNSPECIFIEDP (LFACE_HEIGHT (lface))))
3761 Lisp_Object xlfd = Ffont_xlfd_name (LFACE_FONT (lface), Qnil);
3762 #ifdef USE_MOTIF
3763 const char *suffix = "List";
3764 Bool motif = True;
3765 #else
3766 #if defined HAVE_X_I18N
3768 const char *suffix = "Set";
3769 #else
3770 const char *suffix = "";
3771 #endif
3772 Bool motif = False;
3773 #endif
3775 if (! NILP (xlfd))
3777 #if defined HAVE_X_I18N
3778 extern char *xic_create_fontsetname
3779 P_ ((char *base_fontname, Bool motif));
3780 char *fontsetname = xic_create_fontsetname (SDATA (xlfd), motif);
3781 #else
3782 char *fontsetname = (char *) SDATA (xlfd);
3783 #endif
3784 sprintf (line, "%s.pane.menubar*font%s: %s",
3785 myname, suffix, fontsetname);
3786 XrmPutLineResource (&rdb, line);
3787 sprintf (line, "%s.%s*font%s: %s",
3788 myname, popup_path, suffix, fontsetname);
3789 XrmPutLineResource (&rdb, line);
3790 changed_p = 1;
3791 if (fontsetname != (char *) SDATA (xlfd))
3792 xfree (fontsetname);
3796 if (changed_p && f->output_data.x->menubar_widget)
3797 free_frame_menubar (f);
3801 #endif /* HAVE_X_WINDOWS && USE_X_TOOLKIT */
3804 DEFUN ("face-attribute-relative-p", Fface_attribute_relative_p,
3805 Sface_attribute_relative_p,
3806 2, 2, 0,
3807 doc: /* Check whether a face attribute value is relative.
3808 Specifically, this function returns t if the attribute ATTRIBUTE
3809 with the value VALUE is relative.
3811 A relative value is one that doesn't entirely override whatever is
3812 inherited from another face. For most possible attributes,
3813 the only relative value that users see is `unspecified'.
3814 However, for :height, floating point values are also relative. */)
3815 (attribute, value)
3816 Lisp_Object attribute, value;
3818 if (EQ (value, Qunspecified) || (EQ (value, Qignore_defface)))
3819 return Qt;
3820 else if (EQ (attribute, QCheight))
3821 return INTEGERP (value) ? Qnil : Qt;
3822 else
3823 return Qnil;
3826 DEFUN ("merge-face-attribute", Fmerge_face_attribute, Smerge_face_attribute,
3827 3, 3, 0,
3828 doc: /* Return face ATTRIBUTE VALUE1 merged with VALUE2.
3829 If VALUE1 or VALUE2 are absolute (see `face-attribute-relative-p'), then
3830 the result will be absolute, otherwise it will be relative. */)
3831 (attribute, value1, value2)
3832 Lisp_Object attribute, value1, value2;
3834 if (EQ (value1, Qunspecified) || EQ (value1, Qignore_defface))
3835 return value2;
3836 else if (EQ (attribute, QCheight))
3837 return merge_face_heights (value1, value2, value1);
3838 else
3839 return value1;
3843 DEFUN ("internal-get-lisp-face-attribute", Finternal_get_lisp_face_attribute,
3844 Sinternal_get_lisp_face_attribute,
3845 2, 3, 0,
3846 doc: /* Return face attribute KEYWORD of face SYMBOL.
3847 If SYMBOL does not name a valid Lisp face or KEYWORD isn't a valid
3848 face attribute name, signal an error.
3849 If the optional argument FRAME is given, report on face SYMBOL in that
3850 frame. If FRAME is t, report on the defaults for face SYMBOL (for new
3851 frames). If FRAME is omitted or nil, use the selected frame. */)
3852 (symbol, keyword, frame)
3853 Lisp_Object symbol, keyword, frame;
3855 Lisp_Object lface, value = Qnil;
3857 CHECK_SYMBOL (symbol);
3858 CHECK_SYMBOL (keyword);
3860 if (EQ (frame, Qt))
3861 lface = lface_from_face_name (NULL, symbol, 1);
3862 else
3864 if (NILP (frame))
3865 frame = selected_frame;
3866 CHECK_LIVE_FRAME (frame);
3867 lface = lface_from_face_name (XFRAME (frame), symbol, 1);
3870 if (EQ (keyword, QCfamily))
3871 value = LFACE_FAMILY (lface);
3872 else if (EQ (keyword, QCfoundry))
3873 value = LFACE_FOUNDRY (lface);
3874 else if (EQ (keyword, QCheight))
3875 value = LFACE_HEIGHT (lface);
3876 else if (EQ (keyword, QCweight))
3877 value = LFACE_WEIGHT (lface);
3878 else if (EQ (keyword, QCslant))
3879 value = LFACE_SLANT (lface);
3880 else if (EQ (keyword, QCunderline))
3881 value = LFACE_UNDERLINE (lface);
3882 else if (EQ (keyword, QCoverline))
3883 value = LFACE_OVERLINE (lface);
3884 else if (EQ (keyword, QCstrike_through))
3885 value = LFACE_STRIKE_THROUGH (lface);
3886 else if (EQ (keyword, QCbox))
3887 value = LFACE_BOX (lface);
3888 else if (EQ (keyword, QCinverse_video)
3889 || EQ (keyword, QCreverse_video))
3890 value = LFACE_INVERSE (lface);
3891 else if (EQ (keyword, QCforeground))
3892 value = LFACE_FOREGROUND (lface);
3893 else if (EQ (keyword, QCbackground))
3894 value = LFACE_BACKGROUND (lface);
3895 else if (EQ (keyword, QCstipple))
3896 value = LFACE_STIPPLE (lface);
3897 else if (EQ (keyword, QCwidth))
3898 value = LFACE_SWIDTH (lface);
3899 else if (EQ (keyword, QCinherit))
3900 value = LFACE_INHERIT (lface);
3901 else if (EQ (keyword, QCfont))
3902 value = LFACE_FONT (lface);
3903 else if (EQ (keyword, QCfontset))
3904 value = LFACE_FONTSET (lface);
3905 else
3906 signal_error ("Invalid face attribute name", keyword);
3908 if (IGNORE_DEFFACE_P (value))
3909 return Qunspecified;
3911 return value;
3915 DEFUN ("internal-lisp-face-attribute-values",
3916 Finternal_lisp_face_attribute_values,
3917 Sinternal_lisp_face_attribute_values, 1, 1, 0,
3918 doc: /* Return a list of valid discrete values for face attribute ATTR.
3919 Value is nil if ATTR doesn't have a discrete set of valid values. */)
3920 (attr)
3921 Lisp_Object attr;
3923 Lisp_Object result = Qnil;
3925 CHECK_SYMBOL (attr);
3927 if (EQ (attr, QCunderline))
3928 result = Fcons (Qt, Fcons (Qnil, Qnil));
3929 else if (EQ (attr, QCoverline))
3930 result = Fcons (Qt, Fcons (Qnil, Qnil));
3931 else if (EQ (attr, QCstrike_through))
3932 result = Fcons (Qt, Fcons (Qnil, Qnil));
3933 else if (EQ (attr, QCinverse_video) || EQ (attr, QCreverse_video))
3934 result = Fcons (Qt, Fcons (Qnil, Qnil));
3936 return result;
3940 DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face,
3941 Sinternal_merge_in_global_face, 2, 2, 0,
3942 doc: /* Add attributes from frame-default definition of FACE to FACE on FRAME.
3943 Default face attributes override any local face attributes. */)
3944 (face, frame)
3945 Lisp_Object face, frame;
3947 int i;
3948 Lisp_Object global_lface, local_lface, *gvec, *lvec;
3949 struct frame *f = XFRAME (frame);
3951 CHECK_LIVE_FRAME (frame);
3952 global_lface = lface_from_face_name (NULL, face, 1);
3953 local_lface = lface_from_face_name (f, face, 0);
3954 if (NILP (local_lface))
3955 local_lface = Finternal_make_lisp_face (face, frame);
3957 /* Make every specified global attribute override the local one.
3958 BEWARE!! This is only used from `face-set-after-frame-default' where
3959 the local frame is defined from default specs in `face-defface-spec'
3960 and those should be overridden by global settings. Hence the strange
3961 "global before local" priority. */
3962 lvec = XVECTOR (local_lface)->contents;
3963 gvec = XVECTOR (global_lface)->contents;
3964 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
3965 if (IGNORE_DEFFACE_P (gvec[i]))
3966 lvec[i] = Qunspecified;
3967 else if (! UNSPECIFIEDP (gvec[i]))
3968 lvec[i] = gvec[i];
3970 /* If the default face was changed, update the face cache and the
3971 `font' frame parameter. */
3972 if (EQ (face, Qdefault))
3974 struct face_cache *c = FRAME_FACE_CACHE (f);
3975 struct face *newface, *oldface = FACE_FROM_ID (f, DEFAULT_FACE_ID);
3976 Lisp_Object attrs[LFACE_VECTOR_SIZE];
3978 /* This can be NULL (e.g., in batch mode). */
3979 if (oldface)
3981 /* Ensure that the face vector is fully specified by merging
3982 the previously-cached vector. */
3983 bcopy (oldface->lface, attrs, sizeof attrs);
3984 merge_face_vectors (f, lvec, attrs, 0);
3985 bcopy (attrs, lvec, sizeof attrs);
3986 newface = realize_face (c, lvec, DEFAULT_FACE_ID);
3988 if ((! UNSPECIFIEDP (gvec[LFACE_FAMILY_INDEX])
3989 || ! UNSPECIFIEDP (gvec[LFACE_FOUNDRY_INDEX])
3990 || ! UNSPECIFIEDP (gvec[LFACE_HEIGHT_INDEX])
3991 || ! UNSPECIFIEDP (gvec[LFACE_WEIGHT_INDEX])
3992 || ! UNSPECIFIEDP (gvec[LFACE_SLANT_INDEX])
3993 || ! UNSPECIFIEDP (gvec[LFACE_SWIDTH_INDEX])
3994 || ! UNSPECIFIEDP (gvec[LFACE_FONT_INDEX]))
3995 && newface->font)
3997 Lisp_Object name = newface->font->props[FONT_NAME_INDEX];
3998 Fmodify_frame_parameters (frame, Fcons (Fcons (Qfont, name),
3999 Qnil));
4004 return Qnil;
4008 /* The following function is implemented for compatibility with 20.2.
4009 The function is used in x-resolve-fonts when it is asked to
4010 return fonts with the same size as the font of a face. This is
4011 done in fontset.el. */
4013 DEFUN ("face-font", Fface_font, Sface_font, 1, 3, 0,
4014 doc: /* Return the font name of face FACE, or nil if it is unspecified.
4015 The font name is, by default, for ASCII characters.
4016 If the optional argument FRAME is given, report on face FACE in that frame.
4017 If FRAME is t, report on the defaults for face FACE (for new frames).
4018 The font default for a face is either nil, or a list
4019 of the form (bold), (italic) or (bold italic).
4020 If FRAME is omitted or nil, use the selected frame. And, in this case,
4021 if the optional third argument CHARACTER is given,
4022 return the font name used for CHARACTER. */)
4023 (face, frame, character)
4024 Lisp_Object face, frame, character;
4026 if (EQ (frame, Qt))
4028 Lisp_Object result = Qnil;
4029 Lisp_Object lface = lface_from_face_name (NULL, face, 1);
4031 if (!UNSPECIFIEDP (LFACE_WEIGHT (lface))
4032 && !EQ (LFACE_WEIGHT (lface), Qnormal))
4033 result = Fcons (Qbold, result);
4035 if (!UNSPECIFIEDP (LFACE_SLANT (lface))
4036 && !EQ (LFACE_SLANT (lface), Qnormal))
4037 result = Fcons (Qitalic, result);
4039 return result;
4041 else
4043 struct frame *f = frame_or_selected_frame (frame, 1);
4044 int face_id = lookup_named_face (f, face, 1);
4045 struct face *face = FACE_FROM_ID (f, face_id);
4047 if (! face)
4048 return Qnil;
4049 #ifdef HAVE_WINDOW_SYSTEM
4050 if (FRAME_WINDOW_P (f) && !NILP (character))
4052 CHECK_CHARACTER (character);
4053 face_id = FACE_FOR_CHAR (f, face, XINT (character), -1, Qnil);
4054 face = FACE_FROM_ID (f, face_id);
4056 return (face->font
4057 ? face->font->props[FONT_NAME_INDEX]
4058 : Qnil);
4059 #else /* !HAVE_WINDOW_SYSTEM */
4060 return build_string (FRAME_MSDOS_P (f)
4061 ? "ms-dos"
4062 : FRAME_W32_P (f) ? "w32term"
4063 :"tty");
4064 #endif
4069 /* Compare face-attribute values v1 and v2 for equality. Value is non-zero if
4070 all attributes are `equal'. Tries to be fast because this function
4071 is called quite often. */
4073 static INLINE int
4074 face_attr_equal_p (v1, v2)
4075 Lisp_Object v1, v2;
4077 /* Type can differ, e.g. when one attribute is unspecified, i.e. nil,
4078 and the other is specified. */
4079 if (XTYPE (v1) != XTYPE (v2))
4080 return 0;
4082 if (EQ (v1, v2))
4083 return 1;
4085 switch (XTYPE (v1))
4087 case Lisp_String:
4088 if (SBYTES (v1) != SBYTES (v2))
4089 return 0;
4091 return bcmp (SDATA (v1), SDATA (v2), SBYTES (v1)) == 0;
4093 case Lisp_Int:
4094 case Lisp_Symbol:
4095 return 0;
4097 default:
4098 return !NILP (Fequal (v1, v2));
4103 /* Compare face vectors V1 and V2 for equality. Value is non-zero if
4104 all attributes are `equal'. Tries to be fast because this function
4105 is called quite often. */
4107 static INLINE int
4108 lface_equal_p (v1, v2)
4109 Lisp_Object *v1, *v2;
4111 int i, equal_p = 1;
4113 for (i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i)
4114 equal_p = face_attr_equal_p (v1[i], v2[i]);
4116 return equal_p;
4120 DEFUN ("internal-lisp-face-equal-p", Finternal_lisp_face_equal_p,
4121 Sinternal_lisp_face_equal_p, 2, 3, 0,
4122 doc: /* True if FACE1 and FACE2 are equal.
4123 If the optional argument FRAME is given, report on FACE1 and FACE2 in that frame.
4124 If FRAME is t, report on the defaults for FACE1 and FACE2 (for new frames).
4125 If FRAME is omitted or nil, use the selected frame. */)
4126 (face1, face2, frame)
4127 Lisp_Object face1, face2, frame;
4129 int equal_p;
4130 struct frame *f;
4131 Lisp_Object lface1, lface2;
4133 if (EQ (frame, Qt))
4134 f = NULL;
4135 else
4136 /* Don't use check_x_frame here because this function is called
4137 before X frames exist. At that time, if FRAME is nil,
4138 selected_frame will be used which is the frame dumped with
4139 Emacs. That frame is not an X frame. */
4140 f = frame_or_selected_frame (frame, 2);
4142 lface1 = lface_from_face_name (f, face1, 1);
4143 lface2 = lface_from_face_name (f, face2, 1);
4144 equal_p = lface_equal_p (XVECTOR (lface1)->contents,
4145 XVECTOR (lface2)->contents);
4146 return equal_p ? Qt : Qnil;
4150 DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p,
4151 Sinternal_lisp_face_empty_p, 1, 2, 0,
4152 doc: /* True if FACE has no attribute specified.
4153 If the optional argument FRAME is given, report on face FACE in that frame.
4154 If FRAME is t, report on the defaults for face FACE (for new frames).
4155 If FRAME is omitted or nil, use the selected frame. */)
4156 (face, frame)
4157 Lisp_Object face, frame;
4159 struct frame *f;
4160 Lisp_Object lface;
4161 int i;
4163 if (NILP (frame))
4164 frame = selected_frame;
4165 CHECK_LIVE_FRAME (frame);
4166 f = XFRAME (frame);
4168 if (EQ (frame, Qt))
4169 lface = lface_from_face_name (NULL, face, 1);
4170 else
4171 lface = lface_from_face_name (f, face, 1);
4173 for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
4174 if (!UNSPECIFIEDP (AREF (lface, i)))
4175 break;
4177 return i == LFACE_VECTOR_SIZE ? Qt : Qnil;
4181 DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist,
4182 0, 1, 0,
4183 doc: /* Return an alist of frame-local faces defined on FRAME.
4184 For internal use only. */)
4185 (frame)
4186 Lisp_Object frame;
4188 struct frame *f = frame_or_selected_frame (frame, 0);
4189 return f->face_alist;
4193 /* Return a hash code for Lisp string STRING with case ignored. Used
4194 below in computing a hash value for a Lisp face. */
4196 static INLINE unsigned
4197 hash_string_case_insensitive (string)
4198 Lisp_Object string;
4200 const unsigned char *s;
4201 unsigned hash = 0;
4202 xassert (STRINGP (string));
4203 for (s = SDATA (string); *s; ++s)
4204 hash = (hash << 1) ^ tolower (*s);
4205 return hash;
4209 /* Return a hash code for face attribute vector V. */
4211 static INLINE unsigned
4212 lface_hash (v)
4213 Lisp_Object *v;
4215 return (hash_string_case_insensitive (v[LFACE_FAMILY_INDEX])
4216 ^ hash_string_case_insensitive (v[LFACE_FOUNDRY_INDEX])
4217 ^ hash_string_case_insensitive (v[LFACE_FOREGROUND_INDEX])
4218 ^ hash_string_case_insensitive (v[LFACE_BACKGROUND_INDEX])
4219 ^ XHASH (v[LFACE_WEIGHT_INDEX])
4220 ^ XHASH (v[LFACE_SLANT_INDEX])
4221 ^ XHASH (v[LFACE_SWIDTH_INDEX])
4222 ^ XHASH (v[LFACE_HEIGHT_INDEX]));
4226 /* Return non-zero if LFACE1 and LFACE2 specify the same font (without
4227 considering charsets/registries). They do if they specify the same
4228 family, point size, weight, width, slant, and font. Both
4229 LFACE1 and LFACE2 must be fully-specified. */
4231 static INLINE int
4232 lface_same_font_attributes_p (lface1, lface2)
4233 Lisp_Object *lface1, *lface2;
4235 xassert (lface_fully_specified_p (lface1)
4236 && lface_fully_specified_p (lface2));
4237 return (xstrcasecmp (SDATA (lface1[LFACE_FAMILY_INDEX]),
4238 SDATA (lface2[LFACE_FAMILY_INDEX])) == 0
4239 && xstrcasecmp (SDATA (lface1[LFACE_FOUNDRY_INDEX]),
4240 SDATA (lface2[LFACE_FOUNDRY_INDEX])) == 0
4241 && EQ (lface1[LFACE_HEIGHT_INDEX], lface2[LFACE_HEIGHT_INDEX])
4242 && EQ (lface1[LFACE_SWIDTH_INDEX], lface2[LFACE_SWIDTH_INDEX])
4243 && EQ (lface1[LFACE_WEIGHT_INDEX], lface2[LFACE_WEIGHT_INDEX])
4244 && EQ (lface1[LFACE_SLANT_INDEX], lface2[LFACE_SLANT_INDEX])
4245 && EQ (lface1[LFACE_FONT_INDEX], lface2[LFACE_FONT_INDEX])
4246 && (EQ (lface1[LFACE_FONTSET_INDEX], lface2[LFACE_FONTSET_INDEX])
4247 || (STRINGP (lface1[LFACE_FONTSET_INDEX])
4248 && STRINGP (lface2[LFACE_FONTSET_INDEX])
4249 && ! xstrcasecmp (SDATA (lface1[LFACE_FONTSET_INDEX]),
4250 SDATA (lface2[LFACE_FONTSET_INDEX]))))
4256 /***********************************************************************
4257 Realized Faces
4258 ***********************************************************************/
4260 /* Allocate and return a new realized face for Lisp face attribute
4261 vector ATTR. */
4263 static struct face *
4264 make_realized_face (attr)
4265 Lisp_Object *attr;
4267 struct face *face = (struct face *) xmalloc (sizeof *face);
4268 bzero (face, sizeof *face);
4269 face->ascii_face = face;
4270 bcopy (attr, face->lface, sizeof face->lface);
4271 return face;
4275 /* Free realized face FACE, including its X resources. FACE may
4276 be null. */
4278 void
4279 free_realized_face (f, face)
4280 struct frame *f;
4281 struct face *face;
4283 if (face)
4285 #ifdef HAVE_WINDOW_SYSTEM
4286 if (FRAME_WINDOW_P (f))
4288 /* Free fontset of FACE if it is ASCII face. */
4289 if (face->fontset >= 0 && face == face->ascii_face)
4290 free_face_fontset (f, face);
4291 if (face->gc)
4293 BLOCK_INPUT;
4294 if (face->font)
4295 font_done_for_face (f, face);
4296 x_free_gc (f, face->gc);
4297 face->gc = 0;
4298 UNBLOCK_INPUT;
4301 free_face_colors (f, face);
4302 x_destroy_bitmap (f, face->stipple);
4304 #endif /* HAVE_WINDOW_SYSTEM */
4306 xfree (face);
4311 /* Prepare face FACE for subsequent display on frame F. This
4312 allocated GCs if they haven't been allocated yet or have been freed
4313 by clearing the face cache. */
4315 void
4316 prepare_face_for_display (f, face)
4317 struct frame *f;
4318 struct face *face;
4320 #ifdef HAVE_WINDOW_SYSTEM
4321 xassert (FRAME_WINDOW_P (f));
4323 if (face->gc == 0)
4325 XGCValues xgcv;
4326 unsigned long mask = GCForeground | GCBackground | GCGraphicsExposures;
4328 xgcv.foreground = face->foreground;
4329 xgcv.background = face->background;
4330 #ifdef HAVE_X_WINDOWS
4331 xgcv.graphics_exposures = False;
4332 #endif
4334 BLOCK_INPUT;
4335 #ifdef HAVE_X_WINDOWS
4336 if (face->stipple)
4338 xgcv.fill_style = FillOpaqueStippled;
4339 xgcv.stipple = x_bitmap_pixmap (f, face->stipple);
4340 mask |= GCFillStyle | GCStipple;
4342 #endif
4343 face->gc = x_create_gc (f, mask, &xgcv);
4344 if (face->font)
4345 font_prepare_for_face (f, face);
4346 UNBLOCK_INPUT;
4348 #endif /* HAVE_WINDOW_SYSTEM */
4352 /* Returns the `distance' between the colors X and Y. */
4354 static int
4355 color_distance (x, y)
4356 XColor *x, *y;
4358 /* This formula is from a paper title `Colour metric' by Thiadmer Riemersma.
4359 Quoting from that paper:
4361 This formula has results that are very close to L*u*v* (with the
4362 modified lightness curve) and, more importantly, it is a more even
4363 algorithm: it does not have a range of colours where it suddenly
4364 gives far from optimal results.
4366 See <http://www.compuphase.com/cmetric.htm> for more info. */
4368 long r = (x->red - y->red) >> 8;
4369 long g = (x->green - y->green) >> 8;
4370 long b = (x->blue - y->blue) >> 8;
4371 long r_mean = (x->red + y->red) >> 9;
4373 return
4374 (((512 + r_mean) * r * r) >> 8)
4375 + 4 * g * g
4376 + (((767 - r_mean) * b * b) >> 8);
4380 DEFUN ("color-distance", Fcolor_distance, Scolor_distance, 2, 3, 0,
4381 doc: /* Return an integer distance between COLOR1 and COLOR2 on FRAME.
4382 COLOR1 and COLOR2 may be either strings containing the color name,
4383 or lists of the form (RED GREEN BLUE).
4384 If FRAME is unspecified or nil, the current frame is used. */)
4385 (color1, color2, frame)
4386 Lisp_Object color1, color2, frame;
4388 struct frame *f;
4389 XColor cdef1, cdef2;
4391 if (NILP (frame))
4392 frame = selected_frame;
4393 CHECK_LIVE_FRAME (frame);
4394 f = XFRAME (frame);
4396 if (!(CONSP (color1) && parse_rgb_list (color1, &cdef1))
4397 && !(STRINGP (color1) && defined_color (f, SDATA (color1), &cdef1, 0)))
4398 signal_error ("Invalid color", color1);
4399 if (!(CONSP (color2) && parse_rgb_list (color2, &cdef2))
4400 && !(STRINGP (color2) && defined_color (f, SDATA (color2), &cdef2, 0)))
4401 signal_error ("Invalid color", color2);
4403 return make_number (color_distance (&cdef1, &cdef2));
4407 /***********************************************************************
4408 Face Cache
4409 ***********************************************************************/
4411 /* Return a new face cache for frame F. */
4413 static struct face_cache *
4414 make_face_cache (f)
4415 struct frame *f;
4417 struct face_cache *c;
4418 int size;
4420 c = (struct face_cache *) xmalloc (sizeof *c);
4421 bzero (c, sizeof *c);
4422 size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
4423 c->buckets = (struct face **) xmalloc (size);
4424 bzero (c->buckets, size);
4425 c->size = 50;
4426 c->faces_by_id = (struct face **) xmalloc (c->size * sizeof *c->faces_by_id);
4427 c->f = f;
4428 c->menu_face_changed_p = menu_face_changed_default;
4429 return c;
4433 /* Clear out all graphics contexts for all realized faces, except for
4434 the basic faces. This should be done from time to time just to avoid
4435 keeping too many graphics contexts that are no longer needed. */
4437 static void
4438 clear_face_gcs (c)
4439 struct face_cache *c;
4441 if (c && FRAME_WINDOW_P (c->f))
4443 #ifdef HAVE_WINDOW_SYSTEM
4444 int i;
4445 for (i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i)
4447 struct face *face = c->faces_by_id[i];
4448 if (face && face->gc)
4450 BLOCK_INPUT;
4451 if (face->font)
4452 font_done_for_face (c->f, face);
4453 x_free_gc (c->f, face->gc);
4454 face->gc = 0;
4455 UNBLOCK_INPUT;
4458 #endif /* HAVE_WINDOW_SYSTEM */
4463 /* Free all realized faces in face cache C, including basic faces.
4464 C may be null. If faces are freed, make sure the frame's current
4465 matrix is marked invalid, so that a display caused by an expose
4466 event doesn't try to use faces we destroyed. */
4468 static void
4469 free_realized_faces (c)
4470 struct face_cache *c;
4472 if (c && c->used)
4474 int i, size;
4475 struct frame *f = c->f;
4477 /* We must block input here because we can't process X events
4478 safely while only some faces are freed, or when the frame's
4479 current matrix still references freed faces. */
4480 BLOCK_INPUT;
4482 for (i = 0; i < c->used; ++i)
4484 free_realized_face (f, c->faces_by_id[i]);
4485 c->faces_by_id[i] = NULL;
4488 c->used = 0;
4489 size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
4490 bzero (c->buckets, size);
4492 /* Must do a thorough redisplay the next time. Mark current
4493 matrices as invalid because they will reference faces freed
4494 above. This function is also called when a frame is
4495 destroyed. In this case, the root window of F is nil. */
4496 if (WINDOWP (f->root_window))
4498 clear_current_matrices (f);
4499 ++windows_or_buffers_changed;
4502 UNBLOCK_INPUT;
4507 /* Free all realized faces that are using FONTSET on frame F. */
4509 void
4510 free_realized_faces_for_fontset (f, fontset)
4511 struct frame *f;
4512 int fontset;
4514 struct face_cache *cache = FRAME_FACE_CACHE (f);
4515 struct face *face;
4516 int i;
4518 /* We must block input here because we can't process X events safely
4519 while only some faces are freed, or when the frame's current
4520 matrix still references freed faces. */
4521 BLOCK_INPUT;
4523 for (i = 0; i < cache->used; i++)
4525 face = cache->faces_by_id[i];
4526 if (face
4527 && face->fontset == fontset)
4529 uncache_face (cache, face);
4530 free_realized_face (f, face);
4534 /* Must do a thorough redisplay the next time. Mark current
4535 matrices as invalid because they will reference faces freed
4536 above. This function is also called when a frame is destroyed.
4537 In this case, the root window of F is nil. */
4538 if (WINDOWP (f->root_window))
4540 clear_current_matrices (f);
4541 ++windows_or_buffers_changed;
4544 UNBLOCK_INPUT;
4548 /* Free all realized faces on FRAME or on all frames if FRAME is nil.
4549 This is done after attributes of a named face have been changed,
4550 because we can't tell which realized faces depend on that face. */
4552 void
4553 free_all_realized_faces (frame)
4554 Lisp_Object frame;
4556 if (NILP (frame))
4558 Lisp_Object rest;
4559 FOR_EACH_FRAME (rest, frame)
4560 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame)));
4562 else
4563 free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame)));
4567 /* Free face cache C and faces in it, including their X resources. */
4569 static void
4570 free_face_cache (c)
4571 struct face_cache *c;
4573 if (c)
4575 free_realized_faces (c);
4576 xfree (c->buckets);
4577 xfree (c->faces_by_id);
4578 xfree (c);
4583 /* Cache realized face FACE in face cache C. HASH is the hash value
4584 of FACE. If FACE is for ASCII characters (i.e. FACE->ascii_face ==
4585 FACE), insert the new face to the beginning of the collision list
4586 of the face hash table of C. Otherwise, add the new face to the
4587 end of the collision list. This way, lookup_face can quickly find
4588 that a requested face is not cached. */
4590 static void
4591 cache_face (c, face, hash)
4592 struct face_cache *c;
4593 struct face *face;
4594 unsigned hash;
4596 int i = hash % FACE_CACHE_BUCKETS_SIZE;
4598 face->hash = hash;
4600 if (face->ascii_face != face)
4602 struct face *last = c->buckets[i];
4603 if (last)
4605 while (last->next)
4606 last = last->next;
4607 last->next = face;
4608 face->prev = last;
4609 face->next = NULL;
4611 else
4613 c->buckets[i] = face;
4614 face->prev = face->next = NULL;
4617 else
4619 face->prev = NULL;
4620 face->next = c->buckets[i];
4621 if (face->next)
4622 face->next->prev = face;
4623 c->buckets[i] = face;
4626 /* Find a free slot in C->faces_by_id and use the index of the free
4627 slot as FACE->id. */
4628 for (i = 0; i < c->used; ++i)
4629 if (c->faces_by_id[i] == NULL)
4630 break;
4631 face->id = i;
4633 /* Maybe enlarge C->faces_by_id. */
4634 if (i == c->used)
4636 if (c->used == c->size)
4638 int new_size, sz;
4639 new_size = min (2 * c->size, MAX_FACE_ID);
4640 if (new_size == c->size)
4641 abort (); /* Alternatives? ++kfs */
4642 sz = new_size * sizeof *c->faces_by_id;
4643 c->faces_by_id = (struct face **) xrealloc (c->faces_by_id, sz);
4644 c->size = new_size;
4646 c->used++;
4649 #if GLYPH_DEBUG
4650 /* Check that FACE got a unique id. */
4652 int j, n;
4653 struct face *face;
4655 for (j = n = 0; j < FACE_CACHE_BUCKETS_SIZE; ++j)
4656 for (face = c->buckets[j]; face; face = face->next)
4657 if (face->id == i)
4658 ++n;
4660 xassert (n == 1);
4662 #endif /* GLYPH_DEBUG */
4664 c->faces_by_id[i] = face;
4668 /* Remove face FACE from cache C. */
4670 static void
4671 uncache_face (c, face)
4672 struct face_cache *c;
4673 struct face *face;
4675 int i = face->hash % FACE_CACHE_BUCKETS_SIZE;
4677 if (face->prev)
4678 face->prev->next = face->next;
4679 else
4680 c->buckets[i] = face->next;
4682 if (face->next)
4683 face->next->prev = face->prev;
4685 c->faces_by_id[face->id] = NULL;
4686 if (face->id == c->used)
4687 --c->used;
4691 /* Look up a realized face with face attributes ATTR in the face cache
4692 of frame F. The face will be used to display ASCII characters.
4693 Value is the ID of the face found. If no suitable face is found,
4694 realize a new one. */
4696 INLINE int
4697 lookup_face (f, attr)
4698 struct frame *f;
4699 Lisp_Object *attr;
4701 struct face_cache *cache = FRAME_FACE_CACHE (f);
4702 unsigned hash;
4703 int i;
4704 struct face *face;
4706 xassert (cache != NULL);
4707 check_lface_attrs (attr);
4709 /* Look up ATTR in the face cache. */
4710 hash = lface_hash (attr);
4711 i = hash % FACE_CACHE_BUCKETS_SIZE;
4713 for (face = cache->buckets[i]; face; face = face->next)
4715 if (face->ascii_face != face)
4717 /* There's no more ASCII face. */
4718 face = NULL;
4719 break;
4721 if (face->hash == hash
4722 && lface_equal_p (face->lface, attr))
4723 break;
4726 /* If not found, realize a new face. */
4727 if (face == NULL)
4728 face = realize_face (cache, attr, -1);
4730 #if GLYPH_DEBUG
4731 xassert (face == FACE_FROM_ID (f, face->id));
4732 #endif /* GLYPH_DEBUG */
4734 return face->id;
4737 #ifdef HAVE_WINDOW_SYSTEM
4738 /* Look up a realized face that has the same attributes as BASE_FACE
4739 except for the font in the face cache of frame F. If FONT-OBJECT
4740 is not nil, it is an already opened font. If FONT-OBJECT is nil,
4741 the face has no font. Value is the ID of the face found. If no
4742 suitable face is found, realize a new one. */
4745 face_for_font (f, font_object, base_face)
4746 struct frame *f;
4747 Lisp_Object font_object;
4748 struct face *base_face;
4750 struct face_cache *cache = FRAME_FACE_CACHE (f);
4751 unsigned hash;
4752 int i;
4753 struct face *face;
4755 xassert (cache != NULL);
4756 base_face = base_face->ascii_face;
4757 hash = lface_hash (base_face->lface);
4758 i = hash % FACE_CACHE_BUCKETS_SIZE;
4760 for (face = cache->buckets[i]; face; face = face->next)
4762 if (face->ascii_face == face)
4763 continue;
4764 if (face->ascii_face == base_face
4765 && face->font == (NILP (font_object) ? NULL
4766 : XFONT_OBJECT (font_object))
4767 && lface_equal_p (face->lface, base_face->lface))
4768 return face->id;
4771 /* If not found, realize a new face. */
4772 face = realize_non_ascii_face (f, font_object, base_face);
4773 return face->id;
4775 #endif /* HAVE_WINDOW_SYSTEM */
4777 /* Return the face id of the realized face for named face SYMBOL on
4778 frame F suitable for displaying ASCII characters. Value is -1 if
4779 the face couldn't be determined, which might happen if the default
4780 face isn't realized and cannot be realized. */
4783 lookup_named_face (f, symbol, signal_p)
4784 struct frame *f;
4785 Lisp_Object symbol;
4786 int signal_p;
4788 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4789 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
4790 struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
4792 if (default_face == NULL)
4794 if (!realize_basic_faces (f))
4795 return -1;
4796 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
4797 if (default_face == NULL)
4798 abort (); /* realize_basic_faces must have set it up */
4801 if (! get_lface_attributes (f, symbol, symbol_attrs, signal_p, 0))
4802 return -1;
4804 bcopy (default_face->lface, attrs, sizeof attrs);
4805 merge_face_vectors (f, symbol_attrs, attrs, 0);
4807 return lookup_face (f, attrs);
4811 /* Return the display face-id of the basic face who's canonical face-id
4812 is FACE_ID. The return value will usually simply be FACE_ID, unless that
4813 basic face has bee remapped via Vface_remapping_alist. This function is
4814 conservative: if something goes wrong, it will simply return FACE_ID
4815 rather than signal an error. */
4818 lookup_basic_face (f, face_id)
4819 struct frame *f;
4820 int face_id;
4822 Lisp_Object name, mapping;
4823 int remapped_face_id;
4825 if (NILP (Vface_remapping_alist))
4826 return face_id; /* Nothing to do. */
4828 switch (face_id)
4830 case DEFAULT_FACE_ID: name = Qdefault; break;
4831 case MODE_LINE_FACE_ID: name = Qmode_line; break;
4832 case MODE_LINE_INACTIVE_FACE_ID: name = Qmode_line_inactive; break;
4833 case HEADER_LINE_FACE_ID: name = Qheader_line; break;
4834 case TOOL_BAR_FACE_ID: name = Qtool_bar; break;
4835 case FRINGE_FACE_ID: name = Qfringe; break;
4836 case SCROLL_BAR_FACE_ID: name = Qscroll_bar; break;
4837 case BORDER_FACE_ID: name = Qborder; break;
4838 case CURSOR_FACE_ID: name = Qcursor; break;
4839 case MOUSE_FACE_ID: name = Qmouse; break;
4840 case MENU_FACE_ID: name = Qmenu; break;
4842 default:
4843 abort (); /* the caller is supposed to pass us a basic face id */
4846 /* Do a quick scan through Vface_remapping_alist, and return immediately
4847 if there is no remapping for face NAME. This is just an optimization
4848 for the very common no-remapping case. */
4849 mapping = assq_no_quit (name, Vface_remapping_alist);
4850 if (NILP (mapping))
4851 return face_id; /* Give up. */
4853 /* If there is a remapping entry, lookup the face using NAME, which will
4854 handle the remapping too. */
4855 remapped_face_id = lookup_named_face (f, name, 0);
4856 if (remapped_face_id < 0)
4857 return face_id; /* Give up. */
4859 return remapped_face_id;
4863 /* Return the ID of the realized ASCII face of Lisp face with ID
4864 LFACE_ID on frame F. Value is -1 if LFACE_ID isn't valid. */
4867 ascii_face_of_lisp_face (f, lface_id)
4868 struct frame *f;
4869 int lface_id;
4871 int face_id;
4873 if (lface_id >= 0 && lface_id < lface_id_to_name_size)
4875 Lisp_Object face_name = lface_id_to_name[lface_id];
4876 face_id = lookup_named_face (f, face_name, 1);
4878 else
4879 face_id = -1;
4881 return face_id;
4885 /* Return a face for charset ASCII that is like the face with id
4886 FACE_ID on frame F, but has a font that is STEPS steps smaller.
4887 STEPS < 0 means larger. Value is the id of the face. */
4890 smaller_face (f, face_id, steps)
4891 struct frame *f;
4892 int face_id, steps;
4894 #ifdef HAVE_WINDOW_SYSTEM
4895 struct face *face;
4896 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4897 int pt, last_pt, last_height;
4898 int delta;
4899 int new_face_id;
4900 struct face *new_face;
4902 /* If not called for an X frame, just return the original face. */
4903 if (FRAME_TERMCAP_P (f))
4904 return face_id;
4906 /* Try in increments of 1/2 pt. */
4907 delta = steps < 0 ? 5 : -5;
4908 steps = eabs (steps);
4910 face = FACE_FROM_ID (f, face_id);
4911 bcopy (face->lface, attrs, sizeof attrs);
4912 pt = last_pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]);
4913 new_face_id = face_id;
4914 last_height = FONT_HEIGHT (face->font);
4916 while (steps
4917 && pt + delta > 0
4918 /* Give up if we cannot find a font within 10pt. */
4919 && eabs (last_pt - pt) < 100)
4921 /* Look up a face for a slightly smaller/larger font. */
4922 pt += delta;
4923 attrs[LFACE_HEIGHT_INDEX] = make_number (pt);
4924 new_face_id = lookup_face (f, attrs);
4925 new_face = FACE_FROM_ID (f, new_face_id);
4927 /* If height changes, count that as one step. */
4928 if ((delta < 0 && FONT_HEIGHT (new_face->font) < last_height)
4929 || (delta > 0 && FONT_HEIGHT (new_face->font) > last_height))
4931 --steps;
4932 last_height = FONT_HEIGHT (new_face->font);
4933 last_pt = pt;
4937 return new_face_id;
4939 #else /* not HAVE_WINDOW_SYSTEM */
4941 return face_id;
4943 #endif /* not HAVE_WINDOW_SYSTEM */
4947 /* Return a face for charset ASCII that is like the face with id
4948 FACE_ID on frame F, but has height HEIGHT. */
4951 face_with_height (f, face_id, height)
4952 struct frame *f;
4953 int face_id;
4954 int height;
4956 #ifdef HAVE_WINDOW_SYSTEM
4957 struct face *face;
4958 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4960 if (FRAME_TERMCAP_P (f)
4961 || height <= 0)
4962 return face_id;
4964 face = FACE_FROM_ID (f, face_id);
4965 bcopy (face->lface, attrs, sizeof attrs);
4966 attrs[LFACE_HEIGHT_INDEX] = make_number (height);
4967 face_id = lookup_face (f, attrs);
4968 #endif /* HAVE_WINDOW_SYSTEM */
4970 return face_id;
4974 /* Return the face id of the realized face for named face SYMBOL on
4975 frame F suitable for displaying ASCII characters, and use
4976 attributes of the face FACE_ID for attributes that aren't
4977 completely specified by SYMBOL. This is like lookup_named_face,
4978 except that the default attributes come from FACE_ID, not from the
4979 default face. FACE_ID is assumed to be already realized. */
4982 lookup_derived_face (f, symbol, face_id, signal_p)
4983 struct frame *f;
4984 Lisp_Object symbol;
4985 int face_id;
4986 int signal_p;
4988 Lisp_Object attrs[LFACE_VECTOR_SIZE];
4989 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
4990 struct face *default_face = FACE_FROM_ID (f, face_id);
4992 if (!default_face)
4993 abort ();
4995 if (!get_lface_attributes (f, symbol, symbol_attrs, signal_p, 0))
4996 return -1;
4998 bcopy (default_face->lface, attrs, sizeof attrs);
4999 merge_face_vectors (f, symbol_attrs, attrs, 0);
5000 return lookup_face (f, attrs);
5003 DEFUN ("face-attributes-as-vector", Fface_attributes_as_vector,
5004 Sface_attributes_as_vector, 1, 1, 0,
5005 doc: /* Return a vector of face attributes corresponding to PLIST. */)
5006 (plist)
5007 Lisp_Object plist;
5009 Lisp_Object lface;
5010 lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
5011 Qunspecified);
5012 merge_face_ref (XFRAME (selected_frame), plist, XVECTOR (lface)->contents,
5013 1, 0);
5014 return lface;
5019 /***********************************************************************
5020 Face capability testing
5021 ***********************************************************************/
5024 /* If the distance (as returned by color_distance) between two colors is
5025 less than this, then they are considered the same, for determining
5026 whether a color is supported or not. The range of values is 0-65535. */
5028 #define TTY_SAME_COLOR_THRESHOLD 10000
5030 #ifdef HAVE_WINDOW_SYSTEM
5032 /* Return non-zero if all the face attributes in ATTRS are supported
5033 on the window-system frame F.
5035 The definition of `supported' is somewhat heuristic, but basically means
5036 that a face containing all the attributes in ATTRS, when merged with the
5037 default face for display, can be represented in a way that's
5039 \(1) different in appearance than the default face, and
5040 \(2) `close in spirit' to what the attributes specify, if not exact. */
5042 static int
5043 x_supports_face_attributes_p (f, attrs, def_face)
5044 struct frame *f;
5045 Lisp_Object *attrs;
5046 struct face *def_face;
5048 Lisp_Object *def_attrs = def_face->lface;
5050 /* Check that other specified attributes are different that the default
5051 face. */
5052 if ((!UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX])
5053 && face_attr_equal_p (attrs[LFACE_UNDERLINE_INDEX],
5054 def_attrs[LFACE_UNDERLINE_INDEX]))
5055 || (!UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX])
5056 && face_attr_equal_p (attrs[LFACE_INVERSE_INDEX],
5057 def_attrs[LFACE_INVERSE_INDEX]))
5058 || (!UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX])
5059 && face_attr_equal_p (attrs[LFACE_FOREGROUND_INDEX],
5060 def_attrs[LFACE_FOREGROUND_INDEX]))
5061 || (!UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX])
5062 && face_attr_equal_p (attrs[LFACE_BACKGROUND_INDEX],
5063 def_attrs[LFACE_BACKGROUND_INDEX]))
5064 || (!UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
5065 && face_attr_equal_p (attrs[LFACE_STIPPLE_INDEX],
5066 def_attrs[LFACE_STIPPLE_INDEX]))
5067 || (!UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
5068 && face_attr_equal_p (attrs[LFACE_OVERLINE_INDEX],
5069 def_attrs[LFACE_OVERLINE_INDEX]))
5070 || (!UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
5071 && face_attr_equal_p (attrs[LFACE_STRIKE_THROUGH_INDEX],
5072 def_attrs[LFACE_STRIKE_THROUGH_INDEX]))
5073 || (!UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
5074 && face_attr_equal_p (attrs[LFACE_BOX_INDEX],
5075 def_attrs[LFACE_BOX_INDEX])))
5076 return 0;
5078 /* Check font-related attributes, as those are the most commonly
5079 "unsupported" on a window-system (because of missing fonts). */
5080 if (!UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
5081 || !UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
5082 || !UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
5083 || !UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX])
5084 || !UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX])
5085 || !UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX]))
5087 int face_id;
5088 struct face *face;
5089 Lisp_Object merged_attrs[LFACE_VECTOR_SIZE];
5090 int i;
5092 bcopy (def_attrs, merged_attrs, sizeof merged_attrs);
5094 merge_face_vectors (f, attrs, merged_attrs, 0);
5096 face_id = lookup_face (f, merged_attrs);
5097 face = FACE_FROM_ID (f, face_id);
5099 if (! face)
5100 error ("Cannot make face");
5102 /* If the font is the same, or no font is found, then not
5103 supported. */
5104 if (face->font == def_face->font
5105 || ! face->font)
5106 return 0;
5107 for (i = FONT_TYPE_INDEX; i <= FONT_SIZE_INDEX; i++)
5108 if (! EQ (face->font->props[i], def_face->font->props[i]))
5110 Lisp_Object s1, s2;
5112 if (i < FONT_FOUNDRY_INDEX || i > FONT_REGISTRY_INDEX
5113 || face->font->driver->case_sensitive)
5114 return 1;
5115 s1 = SYMBOL_NAME (face->font->props[i]);
5116 s2 = SYMBOL_NAME (def_face->font->props[i]);
5117 if (! EQ (Fcompare_strings (s1, make_number (0), Qnil,
5118 s2, make_number (0), Qnil, Qt), Qt))
5119 return 1;
5121 return 0;
5124 /* Everything checks out, this face is supported. */
5125 return 1;
5128 #endif /* HAVE_WINDOW_SYSTEM */
5130 /* Return non-zero if all the face attributes in ATTRS are supported
5131 on the tty frame F.
5133 The definition of `supported' is somewhat heuristic, but basically means
5134 that a face containing all the attributes in ATTRS, when merged
5135 with the default face for display, can be represented in a way that's
5137 \(1) different in appearance than the default face, and
5138 \(2) `close in spirit' to what the attributes specify, if not exact.
5140 Point (2) implies that a `:weight black' attribute will be satisfied
5141 by any terminal that can display bold, and a `:foreground "yellow"' as
5142 long as the terminal can display a yellowish color, but `:slant italic'
5143 will _not_ be satisfied by the tty display code's automatic
5144 substitution of a `dim' face for italic. */
5146 static int
5147 tty_supports_face_attributes_p (f, attrs, def_face)
5148 struct frame *f;
5149 Lisp_Object *attrs;
5150 struct face *def_face;
5152 int weight;
5153 Lisp_Object val, fg, bg;
5154 XColor fg_tty_color, fg_std_color;
5155 XColor bg_tty_color, bg_std_color;
5156 unsigned test_caps = 0;
5157 Lisp_Object *def_attrs = def_face->lface;
5160 /* First check some easy-to-check stuff; ttys support none of the
5161 following attributes, so we can just return false if any are requested
5162 (even if `nominal' values are specified, we should still return false,
5163 as that will be the same value that the default face uses). We
5164 consider :slant unsupportable on ttys, even though the face code
5165 actually `fakes' them using a dim attribute if possible. This is
5166 because the faked result is too different from what the face
5167 specifies. */
5168 if (!UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX])
5169 || !UNSPECIFIEDP (attrs[LFACE_FOUNDRY_INDEX])
5170 || !UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX])
5171 || !UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX])
5172 || !UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX])
5173 || !UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX])
5174 || !UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX])
5175 || !UNSPECIFIEDP (attrs[LFACE_BOX_INDEX])
5176 || !UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX]))
5177 return 0;
5180 /* Test for terminal `capabilities' (non-color character attributes). */
5182 /* font weight (bold/dim) */
5183 weight = FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]);
5184 if (weight >= 0)
5186 int def_weight = FONT_WEIGHT_NAME_NUMERIC (def_attrs[LFACE_WEIGHT_INDEX]);
5188 if (weight > 100)
5190 if (def_weight > 100)
5191 return 0; /* same as default */
5192 test_caps = TTY_CAP_BOLD;
5194 else if (weight < 100)
5196 if (def_weight < 100)
5197 return 0; /* same as default */
5198 test_caps = TTY_CAP_DIM;
5200 else if (def_weight == 100)
5201 return 0; /* same as default */
5204 /* underlining */
5205 val = attrs[LFACE_UNDERLINE_INDEX];
5206 if (!UNSPECIFIEDP (val))
5208 if (STRINGP (val))
5209 return 0; /* ttys can't use colored underlines */
5210 else if (face_attr_equal_p (val, def_attrs[LFACE_UNDERLINE_INDEX]))
5211 return 0; /* same as default */
5212 else
5213 test_caps |= TTY_CAP_UNDERLINE;
5216 /* inverse video */
5217 val = attrs[LFACE_INVERSE_INDEX];
5218 if (!UNSPECIFIEDP (val))
5220 if (face_attr_equal_p (val, def_attrs[LFACE_INVERSE_INDEX]))
5221 return 0; /* same as default */
5222 else
5223 test_caps |= TTY_CAP_INVERSE;
5227 /* Color testing. */
5229 /* Default the color indices in FG_TTY_COLOR and BG_TTY_COLOR, since
5230 we use them when calling `tty_capable_p' below, even if the face
5231 specifies no colors. */
5232 fg_tty_color.pixel = FACE_TTY_DEFAULT_FG_COLOR;
5233 bg_tty_color.pixel = FACE_TTY_DEFAULT_BG_COLOR;
5235 /* Check if foreground color is close enough. */
5236 fg = attrs[LFACE_FOREGROUND_INDEX];
5237 if (STRINGP (fg))
5239 Lisp_Object def_fg = def_attrs[LFACE_FOREGROUND_INDEX];
5241 if (face_attr_equal_p (fg, def_fg))
5242 return 0; /* same as default */
5243 else if (! tty_lookup_color (f, fg, &fg_tty_color, &fg_std_color))
5244 return 0; /* not a valid color */
5245 else if (color_distance (&fg_tty_color, &fg_std_color)
5246 > TTY_SAME_COLOR_THRESHOLD)
5247 return 0; /* displayed color is too different */
5248 else
5249 /* Make sure the color is really different than the default. */
5251 XColor def_fg_color;
5252 if (tty_lookup_color (f, def_fg, &def_fg_color, 0)
5253 && (color_distance (&fg_tty_color, &def_fg_color)
5254 <= TTY_SAME_COLOR_THRESHOLD))
5255 return 0;
5259 /* Check if background color is close enough. */
5260 bg = attrs[LFACE_BACKGROUND_INDEX];
5261 if (STRINGP (bg))
5263 Lisp_Object def_bg = def_attrs[LFACE_BACKGROUND_INDEX];
5265 if (face_attr_equal_p (bg, def_bg))
5266 return 0; /* same as default */
5267 else if (! tty_lookup_color (f, bg, &bg_tty_color, &bg_std_color))
5268 return 0; /* not a valid color */
5269 else if (color_distance (&bg_tty_color, &bg_std_color)
5270 > TTY_SAME_COLOR_THRESHOLD)
5271 return 0; /* displayed color is too different */
5272 else
5273 /* Make sure the color is really different than the default. */
5275 XColor def_bg_color;
5276 if (tty_lookup_color (f, def_bg, &def_bg_color, 0)
5277 && (color_distance (&bg_tty_color, &def_bg_color)
5278 <= TTY_SAME_COLOR_THRESHOLD))
5279 return 0;
5283 /* If both foreground and background are requested, see if the
5284 distance between them is OK. We just check to see if the distance
5285 between the tty's foreground and background is close enough to the
5286 distance between the standard foreground and background. */
5287 if (STRINGP (fg) && STRINGP (bg))
5289 int delta_delta
5290 = (color_distance (&fg_std_color, &bg_std_color)
5291 - color_distance (&fg_tty_color, &bg_tty_color));
5292 if (delta_delta > TTY_SAME_COLOR_THRESHOLD
5293 || delta_delta < -TTY_SAME_COLOR_THRESHOLD)
5294 return 0;
5298 /* See if the capabilities we selected above are supported, with the
5299 given colors. */
5300 if (test_caps != 0 &&
5301 ! tty_capable_p (FRAME_TTY (f), test_caps, fg_tty_color.pixel, bg_tty_color.pixel))
5302 return 0;
5305 /* Hmmm, everything checks out, this terminal must support this face. */
5306 return 1;
5310 DEFUN ("display-supports-face-attributes-p",
5311 Fdisplay_supports_face_attributes_p, Sdisplay_supports_face_attributes_p,
5312 1, 2, 0,
5313 doc: /* Return non-nil if all the face attributes in ATTRIBUTES are supported.
5314 The optional argument DISPLAY can be a display name, a frame, or
5315 nil (meaning the selected frame's display).
5317 The definition of `supported' is somewhat heuristic, but basically means
5318 that a face containing all the attributes in ATTRIBUTES, when merged
5319 with the default face for display, can be represented in a way that's
5321 \(1) different in appearance than the default face, and
5322 \(2) `close in spirit' to what the attributes specify, if not exact.
5324 Point (2) implies that a `:weight black' attribute will be satisfied by
5325 any display that can display bold, and a `:foreground \"yellow\"' as long
5326 as it can display a yellowish color, but `:slant italic' will _not_ be
5327 satisfied by the tty display code's automatic substitution of a `dim'
5328 face for italic. */)
5329 (attributes, display)
5330 Lisp_Object attributes, display;
5332 int supports = 0, i;
5333 Lisp_Object frame;
5334 struct frame *f;
5335 struct face *def_face;
5336 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5338 if (noninteractive || !initialized)
5339 /* We may not be able to access low-level face information in batch
5340 mode, or before being dumped, and this function is not going to
5341 be very useful in those cases anyway, so just give up. */
5342 return Qnil;
5344 if (NILP (display))
5345 frame = selected_frame;
5346 else if (FRAMEP (display))
5347 frame = display;
5348 else
5350 /* Find any frame on DISPLAY. */
5351 Lisp_Object fl_tail;
5353 frame = Qnil;
5354 for (fl_tail = Vframe_list; CONSP (fl_tail); fl_tail = XCDR (fl_tail))
5356 frame = XCAR (fl_tail);
5357 if (!NILP (Fequal (Fcdr (Fassq (Qdisplay,
5358 XFRAME (frame)->param_alist)),
5359 display)))
5360 break;
5364 CHECK_LIVE_FRAME (frame);
5365 f = XFRAME (frame);
5367 for (i = 0; i < LFACE_VECTOR_SIZE; i++)
5368 attrs[i] = Qunspecified;
5369 merge_face_ref (f, attributes, attrs, 1, 0);
5371 def_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5372 if (def_face == NULL)
5374 if (! realize_basic_faces (f))
5375 error ("Cannot realize default face");
5376 def_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5377 if (def_face == NULL)
5378 abort (); /* realize_basic_faces must have set it up */
5381 /* Dispatch to the appropriate handler. */
5382 if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5383 supports = tty_supports_face_attributes_p (f, attrs, def_face);
5384 #ifdef HAVE_WINDOW_SYSTEM
5385 else
5386 supports = x_supports_face_attributes_p (f, attrs, def_face);
5387 #endif
5389 return supports ? Qt : Qnil;
5393 /***********************************************************************
5394 Font selection
5395 ***********************************************************************/
5397 DEFUN ("internal-set-font-selection-order",
5398 Finternal_set_font_selection_order,
5399 Sinternal_set_font_selection_order, 1, 1, 0,
5400 doc: /* Set font selection order for face font selection to ORDER.
5401 ORDER must be a list of length 4 containing the symbols `:width',
5402 `:height', `:weight', and `:slant'. Face attributes appearing
5403 first in ORDER are matched first, e.g. if `:height' appears before
5404 `:weight' in ORDER, font selection first tries to find a font with
5405 a suitable height, and then tries to match the font weight.
5406 Value is ORDER. */)
5407 (order)
5408 Lisp_Object order;
5410 Lisp_Object list;
5411 int i;
5412 int indices[DIM (font_sort_order)];
5414 CHECK_LIST (order);
5415 bzero (indices, sizeof indices);
5416 i = 0;
5418 for (list = order;
5419 CONSP (list) && i < DIM (indices);
5420 list = XCDR (list), ++i)
5422 Lisp_Object attr = XCAR (list);
5423 int xlfd;
5425 if (EQ (attr, QCwidth))
5426 xlfd = XLFD_SWIDTH;
5427 else if (EQ (attr, QCheight))
5428 xlfd = XLFD_POINT_SIZE;
5429 else if (EQ (attr, QCweight))
5430 xlfd = XLFD_WEIGHT;
5431 else if (EQ (attr, QCslant))
5432 xlfd = XLFD_SLANT;
5433 else
5434 break;
5436 if (indices[i] != 0)
5437 break;
5438 indices[i] = xlfd;
5441 if (!NILP (list) || i != DIM (indices))
5442 signal_error ("Invalid font sort order", order);
5443 for (i = 0; i < DIM (font_sort_order); ++i)
5444 if (indices[i] == 0)
5445 signal_error ("Invalid font sort order", order);
5447 if (bcmp (indices, font_sort_order, sizeof indices) != 0)
5449 bcopy (indices, font_sort_order, sizeof font_sort_order);
5450 free_all_realized_faces (Qnil);
5453 font_update_sort_order (font_sort_order);
5455 return Qnil;
5459 DEFUN ("internal-set-alternative-font-family-alist",
5460 Finternal_set_alternative_font_family_alist,
5461 Sinternal_set_alternative_font_family_alist, 1, 1, 0,
5462 doc: /* Define alternative font families to try in face font selection.
5463 ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5464 Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can
5465 be found. Value is ALIST. */)
5466 (alist)
5467 Lisp_Object alist;
5469 Lisp_Object entry, tail, tail2;
5471 CHECK_LIST (alist);
5472 alist = Fcopy_sequence (alist);
5473 for (tail = alist; CONSP (tail); tail = XCDR (tail))
5475 entry = XCAR (tail);
5476 CHECK_LIST (entry);
5477 entry = Fcopy_sequence (entry);
5478 XSETCAR (tail, entry);
5479 for (tail2 = entry; CONSP (tail2); tail2 = XCDR (tail2))
5480 XSETCAR (tail2, Fintern (XCAR (tail2), Qnil));
5483 Vface_alternative_font_family_alist = alist;
5484 free_all_realized_faces (Qnil);
5485 return alist;
5489 DEFUN ("internal-set-alternative-font-registry-alist",
5490 Finternal_set_alternative_font_registry_alist,
5491 Sinternal_set_alternative_font_registry_alist, 1, 1, 0,
5492 doc: /* Define alternative font registries to try in face font selection.
5493 ALIST is an alist of (REGISTRY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
5494 Each ALTERNATIVE is tried in order if no fonts of font registry REGISTRY can
5495 be found. Value is ALIST. */)
5496 (alist)
5497 Lisp_Object alist;
5499 Lisp_Object entry, tail, tail2;
5501 CHECK_LIST (alist);
5502 alist = Fcopy_sequence (alist);
5503 for (tail = alist; CONSP (tail); tail = XCDR (tail))
5505 entry = XCAR (tail);
5506 CHECK_LIST (entry);
5507 entry = Fcopy_sequence (entry);
5508 XSETCAR (tail, entry);
5509 for (tail2 = entry; CONSP (tail2); tail2 = XCDR (tail2))
5510 XSETCAR (tail2, Fdowncase (XCAR (tail2)));
5512 Vface_alternative_font_registry_alist = alist;
5513 free_all_realized_faces (Qnil);
5514 return alist;
5518 #ifdef HAVE_WINDOW_SYSTEM
5520 /* Ignore the difference of font point size less than this value. */
5522 #define FONT_POINT_SIZE_QUANTUM 5
5524 /* Return the fontset id of the base fontset name or alias name given
5525 by the fontset attribute of ATTRS. Value is -1 if the fontset
5526 attribute of ATTRS doesn't name a fontset. */
5528 static int
5529 face_fontset (attrs)
5530 Lisp_Object *attrs;
5532 Lisp_Object name;
5534 name = attrs[LFACE_FONTSET_INDEX];
5535 if (!STRINGP (name))
5536 return -1;
5537 return fs_query_fontset (name, 0);
5540 #endif /* HAVE_WINDOW_SYSTEM */
5544 /***********************************************************************
5545 Face Realization
5546 ***********************************************************************/
5548 /* Realize basic faces on frame F. Value is zero if frame parameters
5549 of F don't contain enough information needed to realize the default
5550 face. */
5552 static int
5553 realize_basic_faces (f)
5554 struct frame *f;
5556 int success_p = 0;
5557 int count = SPECPDL_INDEX ();
5559 /* Block input here so that we won't be surprised by an X expose
5560 event, for instance, without having the faces set up. */
5561 BLOCK_INPUT;
5562 specbind (Qscalable_fonts_allowed, Qt);
5564 if (realize_default_face (f))
5566 realize_named_face (f, Qmode_line, MODE_LINE_FACE_ID);
5567 realize_named_face (f, Qmode_line_inactive, MODE_LINE_INACTIVE_FACE_ID);
5568 realize_named_face (f, Qtool_bar, TOOL_BAR_FACE_ID);
5569 realize_named_face (f, Qfringe, FRINGE_FACE_ID);
5570 realize_named_face (f, Qheader_line, HEADER_LINE_FACE_ID);
5571 realize_named_face (f, Qscroll_bar, SCROLL_BAR_FACE_ID);
5572 realize_named_face (f, Qborder, BORDER_FACE_ID);
5573 realize_named_face (f, Qcursor, CURSOR_FACE_ID);
5574 realize_named_face (f, Qmouse, MOUSE_FACE_ID);
5575 realize_named_face (f, Qmenu, MENU_FACE_ID);
5576 realize_named_face (f, Qvertical_border, VERTICAL_BORDER_FACE_ID);
5578 /* Reflect changes in the `menu' face in menu bars. */
5579 if (FRAME_FACE_CACHE (f)->menu_face_changed_p)
5581 FRAME_FACE_CACHE (f)->menu_face_changed_p = 0;
5582 #ifdef USE_X_TOOLKIT
5583 if (FRAME_WINDOW_P (f))
5584 x_update_menu_appearance (f);
5585 #endif
5588 success_p = 1;
5591 unbind_to (count, Qnil);
5592 UNBLOCK_INPUT;
5593 return success_p;
5597 /* Realize the default face on frame F. If the face is not fully
5598 specified, make it fully-specified. Attributes of the default face
5599 that are not explicitly specified are taken from frame parameters. */
5601 static int
5602 realize_default_face (f)
5603 struct frame *f;
5605 struct face_cache *c = FRAME_FACE_CACHE (f);
5606 Lisp_Object lface;
5607 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5608 struct face *face;
5610 /* If the `default' face is not yet known, create it. */
5611 lface = lface_from_face_name (f, Qdefault, 0);
5612 if (NILP (lface))
5614 Lisp_Object frame;
5615 XSETFRAME (frame, f);
5616 lface = Finternal_make_lisp_face (Qdefault, frame);
5619 #ifdef HAVE_WINDOW_SYSTEM
5620 if (FRAME_WINDOW_P (f))
5622 Lisp_Object font_object;
5624 XSETFONT (font_object, FRAME_FONT (f));
5625 set_lface_from_font (f, lface, font_object, f->default_face_done_p);
5626 LFACE_FONTSET (lface) = fontset_name (FRAME_FONTSET (f));
5627 f->default_face_done_p = 1;
5629 #endif /* HAVE_WINDOW_SYSTEM */
5631 if (!FRAME_WINDOW_P (f))
5633 LFACE_FAMILY (lface) = build_string ("default");
5634 LFACE_FOUNDRY (lface) = LFACE_FAMILY (lface);
5635 LFACE_SWIDTH (lface) = Qnormal;
5636 LFACE_HEIGHT (lface) = make_number (1);
5637 if (UNSPECIFIEDP (LFACE_WEIGHT (lface)))
5638 LFACE_WEIGHT (lface) = Qnormal;
5639 if (UNSPECIFIEDP (LFACE_SLANT (lface)))
5640 LFACE_SLANT (lface) = Qnormal;
5641 if (UNSPECIFIEDP (LFACE_FONTSET (lface)))
5642 LFACE_FONTSET (lface) = Qnil;
5645 if (UNSPECIFIEDP (LFACE_UNDERLINE (lface)))
5646 LFACE_UNDERLINE (lface) = Qnil;
5648 if (UNSPECIFIEDP (LFACE_OVERLINE (lface)))
5649 LFACE_OVERLINE (lface) = Qnil;
5651 if (UNSPECIFIEDP (LFACE_STRIKE_THROUGH (lface)))
5652 LFACE_STRIKE_THROUGH (lface) = Qnil;
5654 if (UNSPECIFIEDP (LFACE_BOX (lface)))
5655 LFACE_BOX (lface) = Qnil;
5657 if (UNSPECIFIEDP (LFACE_INVERSE (lface)))
5658 LFACE_INVERSE (lface) = Qnil;
5660 if (UNSPECIFIEDP (LFACE_FOREGROUND (lface)))
5662 /* This function is called so early that colors are not yet
5663 set in the frame parameter list. */
5664 Lisp_Object color = Fassq (Qforeground_color, f->param_alist);
5666 if (CONSP (color) && STRINGP (XCDR (color)))
5667 LFACE_FOREGROUND (lface) = XCDR (color);
5668 else if (FRAME_WINDOW_P (f))
5669 return 0;
5670 else if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5671 LFACE_FOREGROUND (lface) = build_string (unspecified_fg);
5672 else
5673 abort ();
5676 if (UNSPECIFIEDP (LFACE_BACKGROUND (lface)))
5678 /* This function is called so early that colors are not yet
5679 set in the frame parameter list. */
5680 Lisp_Object color = Fassq (Qbackground_color, f->param_alist);
5681 if (CONSP (color) && STRINGP (XCDR (color)))
5682 LFACE_BACKGROUND (lface) = XCDR (color);
5683 else if (FRAME_WINDOW_P (f))
5684 return 0;
5685 else if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
5686 LFACE_BACKGROUND (lface) = build_string (unspecified_bg);
5687 else
5688 abort ();
5691 if (UNSPECIFIEDP (LFACE_STIPPLE (lface)))
5692 LFACE_STIPPLE (lface) = Qnil;
5694 /* Realize the face; it must be fully-specified now. */
5695 xassert (lface_fully_specified_p (XVECTOR (lface)->contents));
5696 check_lface (lface);
5697 bcopy (XVECTOR (lface)->contents, attrs, sizeof attrs);
5698 face = realize_face (c, attrs, DEFAULT_FACE_ID);
5700 #ifdef HAVE_WINDOW_SYSTEM
5701 #ifdef HAVE_X_WINDOWS
5702 if (FRAME_X_P (f) && face->font != FRAME_FONT (f))
5704 /* This can happen when making a frame on a display that does
5705 not support the default font. */
5706 if (!face->font)
5707 return 0;
5709 /* Otherwise, the font specified for the frame was not
5710 acceptable as a font for the default face (perhaps because
5711 auto-scaled fonts are rejected), so we must adjust the frame
5712 font. */
5713 x_set_font (f, LFACE_FONT (lface), Qnil);
5715 #endif /* HAVE_X_WINDOWS */
5716 #endif /* HAVE_WINDOW_SYSTEM */
5717 return 1;
5721 /* Realize basic faces other than the default face in face cache C.
5722 SYMBOL is the face name, ID is the face id the realized face must
5723 have. The default face must have been realized already. */
5725 static void
5726 realize_named_face (f, symbol, id)
5727 struct frame *f;
5728 Lisp_Object symbol;
5729 int id;
5731 struct face_cache *c = FRAME_FACE_CACHE (f);
5732 Lisp_Object lface = lface_from_face_name (f, symbol, 0);
5733 Lisp_Object attrs[LFACE_VECTOR_SIZE];
5734 Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE];
5735 struct face *new_face;
5737 /* The default face must exist and be fully specified. */
5738 get_lface_attributes_no_remap (f, Qdefault, attrs, 1);
5739 check_lface_attrs (attrs);
5740 xassert (lface_fully_specified_p (attrs));
5742 /* If SYMBOL isn't know as a face, create it. */
5743 if (NILP (lface))
5745 Lisp_Object frame;
5746 XSETFRAME (frame, f);
5747 lface = Finternal_make_lisp_face (symbol, frame);
5750 /* Merge SYMBOL's face with the default face. */
5751 get_lface_attributes_no_remap (f, symbol, symbol_attrs, 1);
5752 merge_face_vectors (f, symbol_attrs, attrs, 0);
5754 /* Realize the face. */
5755 new_face = realize_face (c, attrs, id);
5759 /* Realize the fully-specified face with attributes ATTRS in face
5760 cache CACHE for ASCII characters. If FORMER_FACE_ID is
5761 non-negative, it is an ID of face to remove before caching the new
5762 face. Value is a pointer to the newly created realized face. */
5764 static struct face *
5765 realize_face (cache, attrs, former_face_id)
5766 struct face_cache *cache;
5767 Lisp_Object *attrs;
5768 int former_face_id;
5770 struct face *face;
5772 /* LFACE must be fully specified. */
5773 xassert (cache != NULL);
5774 check_lface_attrs (attrs);
5776 if (former_face_id >= 0 && cache->used > former_face_id)
5778 /* Remove the former face. */
5779 struct face *former_face = cache->faces_by_id[former_face_id];
5780 uncache_face (cache, former_face);
5781 free_realized_face (cache->f, former_face);
5784 if (FRAME_WINDOW_P (cache->f))
5785 face = realize_x_face (cache, attrs);
5786 else if (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f))
5787 face = realize_tty_face (cache, attrs);
5788 else if (FRAME_INITIAL_P (cache->f))
5790 /* Create a dummy face. */
5791 face = make_realized_face (attrs);
5793 else
5794 abort ();
5796 /* Insert the new face. */
5797 cache_face (cache, face, lface_hash (attrs));
5798 return face;
5802 #ifdef HAVE_WINDOW_SYSTEM
5803 /* Realize the fully-specified face that uses FONT-OBJECT and has the
5804 same attributes as BASE_FACE except for the font on frame F.
5805 FONT-OBJECT may be nil, in which case, realized a face of
5806 no-font. */
5808 static struct face *
5809 realize_non_ascii_face (f, font_object, base_face)
5810 struct frame *f;
5811 Lisp_Object font_object;
5812 struct face *base_face;
5814 struct face_cache *cache = FRAME_FACE_CACHE (f);
5815 struct face *face;
5817 face = (struct face *) xmalloc (sizeof *face);
5818 *face = *base_face;
5819 face->gc = 0;
5820 face->extra = NULL;
5821 face->overstrike
5822 = (! NILP (font_object)
5823 && FONT_WEIGHT_NAME_NUMERIC (face->lface[LFACE_WEIGHT_INDEX]) > 100
5824 && FONT_WEIGHT_NUMERIC (font_object) <= 100);
5826 /* Don't try to free the colors copied bitwise from BASE_FACE. */
5827 face->colors_copied_bitwise_p = 1;
5828 face->font = NILP (font_object) ? NULL : XFONT_OBJECT (font_object);
5829 face->gc = 0;
5831 cache_face (cache, face, face->hash);
5833 return face;
5835 #endif /* HAVE_WINDOW_SYSTEM */
5838 /* Realize the fully-specified face with attributes ATTRS in face
5839 cache CACHE for ASCII characters. Do it for X frame CACHE->f. If
5840 the new face doesn't share font with the default face, a fontname
5841 is allocated from the heap and set in `font_name' of the new face,
5842 but it is not yet loaded here. Value is a pointer to the newly
5843 created realized face. */
5845 static struct face *
5846 realize_x_face (cache, attrs)
5847 struct face_cache *cache;
5848 Lisp_Object *attrs;
5850 struct face *face = NULL;
5851 #ifdef HAVE_WINDOW_SYSTEM
5852 struct face *default_face;
5853 struct frame *f;
5854 Lisp_Object stipple, overline, strike_through, box;
5856 xassert (FRAME_WINDOW_P (cache->f));
5858 /* Allocate a new realized face. */
5859 face = make_realized_face (attrs);
5860 face->ascii_face = face;
5862 f = cache->f;
5864 /* Determine the font to use. Most of the time, the font will be
5865 the same as the font of the default face, so try that first. */
5866 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
5867 if (default_face
5868 && lface_same_font_attributes_p (default_face->lface, attrs))
5870 face->font = default_face->font;
5871 face->fontset
5872 = make_fontset_for_ascii_face (f, default_face->fontset, face);
5874 else
5876 /* If the face attribute ATTRS specifies a fontset, use it as
5877 the base of a new realized fontset. Otherwise, use the same
5878 base fontset as of the default face. The base determines
5879 registry and encoding of a font. It may also determine
5880 foundry and family. The other fields of font name pattern
5881 are constructed from ATTRS. */
5882 int fontset = face_fontset (attrs);
5884 /* If we are realizing the default face, ATTRS should specify a
5885 fontset. In other words, if FONTSET is -1, we are not
5886 realizing the default face, thus the default face should have
5887 already been realized. */
5888 if (fontset == -1)
5889 fontset = default_face->fontset;
5890 if (fontset == -1)
5891 abort ();
5892 if (! FONT_OBJECT_P (attrs[LFACE_FONT_INDEX]))
5893 attrs[LFACE_FONT_INDEX]
5894 = font_load_for_lface (f, attrs, attrs[LFACE_FONT_INDEX]);
5895 if (FONT_OBJECT_P (attrs[LFACE_FONT_INDEX]))
5897 face->font = XFONT_OBJECT (attrs[LFACE_FONT_INDEX]);
5898 face->fontset = make_fontset_for_ascii_face (f, fontset, face);
5900 else
5902 face->font = NULL;
5903 face->fontset = -1;
5907 if (face->font
5908 && FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]) > 100
5909 && FONT_WEIGHT_NUMERIC (attrs[LFACE_FONT_INDEX]) <= 100)
5910 face->overstrike = 1;
5912 /* Load colors, and set remaining attributes. */
5914 load_face_colors (f, face, attrs);
5916 /* Set up box. */
5917 box = attrs[LFACE_BOX_INDEX];
5918 if (STRINGP (box))
5920 /* A simple box of line width 1 drawn in color given by
5921 the string. */
5922 face->box_color = load_color (f, face, attrs[LFACE_BOX_INDEX],
5923 LFACE_BOX_INDEX);
5924 face->box = FACE_SIMPLE_BOX;
5925 face->box_line_width = 1;
5927 else if (INTEGERP (box))
5929 /* Simple box of specified line width in foreground color of the
5930 face. */
5931 xassert (XINT (box) != 0);
5932 face->box = FACE_SIMPLE_BOX;
5933 face->box_line_width = XINT (box);
5934 face->box_color = face->foreground;
5935 face->box_color_defaulted_p = 1;
5937 else if (CONSP (box))
5939 /* `(:width WIDTH :color COLOR :shadow SHADOW)'. SHADOW
5940 being one of `raised' or `sunken'. */
5941 face->box = FACE_SIMPLE_BOX;
5942 face->box_color = face->foreground;
5943 face->box_color_defaulted_p = 1;
5944 face->box_line_width = 1;
5946 while (CONSP (box))
5948 Lisp_Object keyword, value;
5950 keyword = XCAR (box);
5951 box = XCDR (box);
5953 if (!CONSP (box))
5954 break;
5955 value = XCAR (box);
5956 box = XCDR (box);
5958 if (EQ (keyword, QCline_width))
5960 if (INTEGERP (value) && XINT (value) != 0)
5961 face->box_line_width = XINT (value);
5963 else if (EQ (keyword, QCcolor))
5965 if (STRINGP (value))
5967 face->box_color = load_color (f, face, value,
5968 LFACE_BOX_INDEX);
5969 face->use_box_color_for_shadows_p = 1;
5972 else if (EQ (keyword, QCstyle))
5974 if (EQ (value, Qreleased_button))
5975 face->box = FACE_RAISED_BOX;
5976 else if (EQ (value, Qpressed_button))
5977 face->box = FACE_SUNKEN_BOX;
5982 /* Text underline, overline, strike-through. */
5984 if (EQ (attrs[LFACE_UNDERLINE_INDEX], Qt))
5986 /* Use default color (same as foreground color). */
5987 face->underline_p = 1;
5988 face->underline_defaulted_p = 1;
5989 face->underline_color = 0;
5991 else if (STRINGP (attrs[LFACE_UNDERLINE_INDEX]))
5993 /* Use specified color. */
5994 face->underline_p = 1;
5995 face->underline_defaulted_p = 0;
5996 face->underline_color
5997 = load_color (f, face, attrs[LFACE_UNDERLINE_INDEX],
5998 LFACE_UNDERLINE_INDEX);
6000 else if (NILP (attrs[LFACE_UNDERLINE_INDEX]))
6002 face->underline_p = 0;
6003 face->underline_defaulted_p = 0;
6004 face->underline_color = 0;
6007 overline = attrs[LFACE_OVERLINE_INDEX];
6008 if (STRINGP (overline))
6010 face->overline_color
6011 = load_color (f, face, attrs[LFACE_OVERLINE_INDEX],
6012 LFACE_OVERLINE_INDEX);
6013 face->overline_p = 1;
6015 else if (EQ (overline, Qt))
6017 face->overline_color = face->foreground;
6018 face->overline_color_defaulted_p = 1;
6019 face->overline_p = 1;
6022 strike_through = attrs[LFACE_STRIKE_THROUGH_INDEX];
6023 if (STRINGP (strike_through))
6025 face->strike_through_color
6026 = load_color (f, face, attrs[LFACE_STRIKE_THROUGH_INDEX],
6027 LFACE_STRIKE_THROUGH_INDEX);
6028 face->strike_through_p = 1;
6030 else if (EQ (strike_through, Qt))
6032 face->strike_through_color = face->foreground;
6033 face->strike_through_color_defaulted_p = 1;
6034 face->strike_through_p = 1;
6037 stipple = attrs[LFACE_STIPPLE_INDEX];
6038 if (!NILP (stipple))
6039 face->stipple = load_pixmap (f, stipple, &face->pixmap_w, &face->pixmap_h);
6040 #endif /* HAVE_WINDOW_SYSTEM */
6042 return face;
6046 /* Map a specified color of face FACE on frame F to a tty color index.
6047 IDX is either LFACE_FOREGROUND_INDEX or LFACE_BACKGROUND_INDEX, and
6048 specifies which color to map. Set *DEFAULTED to 1 if mapping to the
6049 default foreground/background colors. */
6051 static void
6052 map_tty_color (f, face, idx, defaulted)
6053 struct frame *f;
6054 struct face *face;
6055 enum lface_attribute_index idx;
6056 int *defaulted;
6058 Lisp_Object frame, color, def;
6059 int foreground_p = idx == LFACE_FOREGROUND_INDEX;
6060 unsigned long default_pixel, default_other_pixel, pixel;
6062 xassert (idx == LFACE_FOREGROUND_INDEX || idx == LFACE_BACKGROUND_INDEX);
6064 if (foreground_p)
6066 pixel = default_pixel = FACE_TTY_DEFAULT_FG_COLOR;
6067 default_other_pixel = FACE_TTY_DEFAULT_BG_COLOR;
6069 else
6071 pixel = default_pixel = FACE_TTY_DEFAULT_BG_COLOR;
6072 default_other_pixel = FACE_TTY_DEFAULT_FG_COLOR;
6075 XSETFRAME (frame, f);
6076 color = face->lface[idx];
6078 if (STRINGP (color)
6079 && SCHARS (color)
6080 && CONSP (Vtty_defined_color_alist)
6081 && (def = assq_no_quit (color, call1 (Qtty_color_alist, frame)),
6082 CONSP (def)))
6084 /* Associations in tty-defined-color-alist are of the form
6085 (NAME INDEX R G B). We need the INDEX part. */
6086 pixel = XINT (XCAR (XCDR (def)));
6089 if (pixel == default_pixel && STRINGP (color))
6091 pixel = load_color (f, face, color, idx);
6093 #ifdef MSDOS
6094 /* If the foreground of the default face is the default color,
6095 use the foreground color defined by the frame. */
6096 if (FRAME_MSDOS_P (f))
6098 if (pixel == default_pixel
6099 || pixel == FACE_TTY_DEFAULT_COLOR)
6101 if (foreground_p)
6102 pixel = FRAME_FOREGROUND_PIXEL (f);
6103 else
6104 pixel = FRAME_BACKGROUND_PIXEL (f);
6105 face->lface[idx] = tty_color_name (f, pixel);
6106 *defaulted = 1;
6108 else if (pixel == default_other_pixel)
6110 if (foreground_p)
6111 pixel = FRAME_BACKGROUND_PIXEL (f);
6112 else
6113 pixel = FRAME_FOREGROUND_PIXEL (f);
6114 face->lface[idx] = tty_color_name (f, pixel);
6115 *defaulted = 1;
6118 #endif /* MSDOS */
6121 if (foreground_p)
6122 face->foreground = pixel;
6123 else
6124 face->background = pixel;
6128 /* Realize the fully-specified face with attributes ATTRS in face
6129 cache CACHE for ASCII characters. Do it for TTY frame CACHE->f.
6130 Value is a pointer to the newly created realized face. */
6132 static struct face *
6133 realize_tty_face (cache, attrs)
6134 struct face_cache *cache;
6135 Lisp_Object *attrs;
6137 struct face *face;
6138 int weight, slant;
6139 int face_colors_defaulted = 0;
6140 struct frame *f = cache->f;
6142 /* Frame must be a termcap frame. */
6143 xassert (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f));
6145 /* Allocate a new realized face. */
6146 face = make_realized_face (attrs);
6147 #if 0
6148 face->font_name = FRAME_MSDOS_P (cache->f) ? "ms-dos" : "tty";
6149 #endif
6151 /* Map face attributes to TTY appearances. We map slant to
6152 dimmed text because we want italic text to appear differently
6153 and because dimmed text is probably used infrequently. */
6154 weight = FONT_WEIGHT_NAME_NUMERIC (attrs[LFACE_WEIGHT_INDEX]);
6155 slant = FONT_SLANT_NAME_NUMERIC (attrs[LFACE_SLANT_INDEX]);
6156 if (weight > 100)
6157 face->tty_bold_p = 1;
6158 if (weight < 100 || slant != 100)
6159 face->tty_dim_p = 1;
6160 if (!NILP (attrs[LFACE_UNDERLINE_INDEX]))
6161 face->tty_underline_p = 1;
6162 if (!NILP (attrs[LFACE_INVERSE_INDEX]))
6163 face->tty_reverse_p = 1;
6165 /* Map color names to color indices. */
6166 map_tty_color (f, face, LFACE_FOREGROUND_INDEX, &face_colors_defaulted);
6167 map_tty_color (f, face, LFACE_BACKGROUND_INDEX, &face_colors_defaulted);
6169 /* Swap colors if face is inverse-video. If the colors are taken
6170 from the frame colors, they are already inverted, since the
6171 frame-creation function calls x-handle-reverse-video. */
6172 if (face->tty_reverse_p && !face_colors_defaulted)
6174 unsigned long tem = face->foreground;
6175 face->foreground = face->background;
6176 face->background = tem;
6179 if (tty_suppress_bold_inverse_default_colors_p
6180 && face->tty_bold_p
6181 && face->background == FACE_TTY_DEFAULT_FG_COLOR
6182 && face->foreground == FACE_TTY_DEFAULT_BG_COLOR)
6183 face->tty_bold_p = 0;
6185 return face;
6189 DEFUN ("tty-suppress-bold-inverse-default-colors",
6190 Ftty_suppress_bold_inverse_default_colors,
6191 Stty_suppress_bold_inverse_default_colors, 1, 1, 0,
6192 doc: /* Suppress/allow boldness of faces with inverse default colors.
6193 SUPPRESS non-nil means suppress it.
6194 This affects bold faces on TTYs whose foreground is the default background
6195 color of the display and whose background is the default foreground color.
6196 For such faces, the bold face attribute is ignored if this variable
6197 is non-nil. */)
6198 (suppress)
6199 Lisp_Object suppress;
6201 tty_suppress_bold_inverse_default_colors_p = !NILP (suppress);
6202 ++face_change_count;
6203 return suppress;
6208 /***********************************************************************
6209 Computing Faces
6210 ***********************************************************************/
6212 /* Return the ID of the face to use to display character CH with face
6213 property PROP on frame F in current_buffer. */
6216 compute_char_face (f, ch, prop)
6217 struct frame *f;
6218 int ch;
6219 Lisp_Object prop;
6221 int face_id;
6223 if (NILP (current_buffer->enable_multibyte_characters))
6224 ch = 0;
6226 if (NILP (prop))
6228 struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6229 face_id = FACE_FOR_CHAR (f, face, ch, -1, Qnil);
6231 else
6233 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6234 struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6235 bcopy (default_face->lface, attrs, sizeof attrs);
6236 merge_face_ref (f, prop, attrs, 1, 0);
6237 face_id = lookup_face (f, attrs);
6240 return face_id;
6243 /* Return the face ID associated with buffer position POS for
6244 displaying ASCII characters. Return in *ENDPTR the position at
6245 which a different face is needed, as far as text properties and
6246 overlays are concerned. W is a window displaying current_buffer.
6248 REGION_BEG, REGION_END delimit the region, so it can be
6249 highlighted.
6251 LIMIT is a position not to scan beyond. That is to limit the time
6252 this function can take.
6254 If MOUSE is non-zero, use the character's mouse-face, not its face.
6256 The face returned is suitable for displaying ASCII characters. */
6259 face_at_buffer_position (w, pos, region_beg, region_end,
6260 endptr, limit, mouse)
6261 struct window *w;
6262 EMACS_INT pos;
6263 EMACS_INT region_beg, region_end;
6264 EMACS_INT *endptr;
6265 EMACS_INT limit;
6266 int mouse;
6268 struct frame *f = XFRAME (w->frame);
6269 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6270 Lisp_Object prop, position;
6271 int i, noverlays;
6272 Lisp_Object *overlay_vec;
6273 Lisp_Object frame;
6274 EMACS_INT endpos;
6275 Lisp_Object propname = mouse ? Qmouse_face : Qface;
6276 Lisp_Object limit1, end;
6277 struct face *default_face;
6279 /* W must display the current buffer. We could write this function
6280 to use the frame and buffer of W, but right now it doesn't. */
6281 /* xassert (XBUFFER (w->buffer) == current_buffer); */
6283 XSETFRAME (frame, f);
6284 XSETFASTINT (position, pos);
6286 endpos = ZV;
6287 if (pos < region_beg && region_beg < endpos)
6288 endpos = region_beg;
6290 /* Get the `face' or `mouse_face' text property at POS, and
6291 determine the next position at which the property changes. */
6292 prop = Fget_text_property (position, propname, w->buffer);
6293 XSETFASTINT (limit1, (limit < endpos ? limit : endpos));
6294 end = Fnext_single_property_change (position, propname, w->buffer, limit1);
6295 if (INTEGERP (end))
6296 endpos = XINT (end);
6298 /* Look at properties from overlays. */
6300 EMACS_INT next_overlay;
6302 GET_OVERLAYS_AT (pos, overlay_vec, noverlays, &next_overlay, 0);
6303 if (next_overlay < endpos)
6304 endpos = next_overlay;
6307 *endptr = endpos;
6310 /* Perhaps remap BASE_FACE_ID to a user-specified alternative. */
6311 if (NILP (Vface_remapping_alist))
6312 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6313 else
6314 default_face = FACE_FROM_ID (f, lookup_basic_face (f, DEFAULT_FACE_ID));
6316 /* Optimize common cases where we can use the default face. */
6317 if (noverlays == 0
6318 && NILP (prop)
6319 && !(pos >= region_beg && pos < region_end))
6320 return default_face->id;
6322 /* Begin with attributes from the default face. */
6323 bcopy (default_face->lface, attrs, sizeof attrs);
6325 /* Merge in attributes specified via text properties. */
6326 if (!NILP (prop))
6327 merge_face_ref (f, prop, attrs, 1, 0);
6329 /* Now merge the overlay data. */
6330 noverlays = sort_overlays (overlay_vec, noverlays, w);
6331 for (i = 0; i < noverlays; i++)
6333 Lisp_Object oend;
6334 int oendpos;
6336 prop = Foverlay_get (overlay_vec[i], propname);
6337 if (!NILP (prop))
6338 merge_face_ref (f, prop, attrs, 1, 0);
6340 oend = OVERLAY_END (overlay_vec[i]);
6341 oendpos = OVERLAY_POSITION (oend);
6342 if (oendpos < endpos)
6343 endpos = oendpos;
6346 /* If in the region, merge in the region face. */
6347 if (pos >= region_beg && pos < region_end)
6349 merge_named_face (f, Qregion, attrs, 0);
6351 if (region_end < endpos)
6352 endpos = region_end;
6355 *endptr = endpos;
6357 /* Look up a realized face with the given face attributes,
6358 or realize a new one for ASCII characters. */
6359 return lookup_face (f, attrs);
6362 /* Return the face ID at buffer position POS for displaying ASCII
6363 characters associated with overlay strings for overlay OVERLAY.
6365 Like face_at_buffer_position except for OVERLAY. Currently it
6366 simply disregards the `face' properties of all overlays. */
6369 face_for_overlay_string (w, pos, region_beg, region_end,
6370 endptr, limit, mouse, overlay)
6371 struct window *w;
6372 EMACS_INT pos;
6373 EMACS_INT region_beg, region_end;
6374 EMACS_INT *endptr;
6375 EMACS_INT limit;
6376 int mouse;
6377 Lisp_Object overlay;
6379 struct frame *f = XFRAME (w->frame);
6380 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6381 Lisp_Object prop, position;
6382 Lisp_Object frame;
6383 int endpos;
6384 Lisp_Object propname = mouse ? Qmouse_face : Qface;
6385 Lisp_Object limit1, end;
6386 struct face *default_face;
6388 /* W must display the current buffer. We could write this function
6389 to use the frame and buffer of W, but right now it doesn't. */
6390 /* xassert (XBUFFER (w->buffer) == current_buffer); */
6392 XSETFRAME (frame, f);
6393 XSETFASTINT (position, pos);
6395 endpos = ZV;
6396 if (pos < region_beg && region_beg < endpos)
6397 endpos = region_beg;
6399 /* Get the `face' or `mouse_face' text property at POS, and
6400 determine the next position at which the property changes. */
6401 prop = Fget_text_property (position, propname, w->buffer);
6402 XSETFASTINT (limit1, (limit < endpos ? limit : endpos));
6403 end = Fnext_single_property_change (position, propname, w->buffer, limit1);
6404 if (INTEGERP (end))
6405 endpos = XINT (end);
6407 *endptr = endpos;
6409 default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
6411 /* Optimize common cases where we can use the default face. */
6412 if (NILP (prop)
6413 && !(pos >= region_beg && pos < region_end))
6414 return DEFAULT_FACE_ID;
6416 /* Begin with attributes from the default face. */
6417 bcopy (default_face->lface, attrs, sizeof attrs);
6419 /* Merge in attributes specified via text properties. */
6420 if (!NILP (prop))
6421 merge_face_ref (f, prop, attrs, 1, 0);
6423 /* If in the region, merge in the region face. */
6424 if (pos >= region_beg && pos < region_end)
6426 merge_named_face (f, Qregion, attrs, 0);
6428 if (region_end < endpos)
6429 endpos = region_end;
6432 *endptr = endpos;
6434 /* Look up a realized face with the given face attributes,
6435 or realize a new one for ASCII characters. */
6436 return lookup_face (f, attrs);
6440 /* Compute the face at character position POS in Lisp string STRING on
6441 window W, for ASCII characters.
6443 If STRING is an overlay string, it comes from position BUFPOS in
6444 current_buffer, otherwise BUFPOS is zero to indicate that STRING is
6445 not an overlay string. W must display the current buffer.
6446 REGION_BEG and REGION_END give the start and end positions of the
6447 region; both are -1 if no region is visible.
6449 BASE_FACE_ID is the id of a face to merge with. For strings coming
6450 from overlays or the `display' property it is the face at BUFPOS.
6452 If MOUSE_P is non-zero, use the character's mouse-face, not its face.
6454 Set *ENDPTR to the next position where to check for faces in
6455 STRING; -1 if the face is constant from POS to the end of the
6456 string.
6458 Value is the id of the face to use. The face returned is suitable
6459 for displaying ASCII characters. */
6462 face_at_string_position (w, string, pos, bufpos, region_beg,
6463 region_end, endptr, base_face_id, mouse_p)
6464 struct window *w;
6465 Lisp_Object string;
6466 EMACS_INT pos, bufpos;
6467 EMACS_INT region_beg, region_end;
6468 EMACS_INT *endptr;
6469 enum face_id base_face_id;
6470 int mouse_p;
6472 Lisp_Object prop, position, end, limit;
6473 struct frame *f = XFRAME (WINDOW_FRAME (w));
6474 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6475 struct face *base_face;
6476 int multibyte_p = STRING_MULTIBYTE (string);
6477 Lisp_Object prop_name = mouse_p ? Qmouse_face : Qface;
6479 /* Get the value of the face property at the current position within
6480 STRING. Value is nil if there is no face property. */
6481 XSETFASTINT (position, pos);
6482 prop = Fget_text_property (position, prop_name, string);
6484 /* Get the next position at which to check for faces. Value of end
6485 is nil if face is constant all the way to the end of the string.
6486 Otherwise it is a string position where to check faces next.
6487 Limit is the maximum position up to which to check for property
6488 changes in Fnext_single_property_change. Strings are usually
6489 short, so set the limit to the end of the string. */
6490 XSETFASTINT (limit, SCHARS (string));
6491 end = Fnext_single_property_change (position, prop_name, string, limit);
6492 if (INTEGERP (end))
6493 *endptr = XFASTINT (end);
6494 else
6495 *endptr = -1;
6497 base_face = FACE_FROM_ID (f, base_face_id);
6498 xassert (base_face);
6500 /* Optimize the default case that there is no face property and we
6501 are not in the region. */
6502 if (NILP (prop)
6503 && (base_face_id != DEFAULT_FACE_ID
6504 /* BUFPOS <= 0 means STRING is not an overlay string, so
6505 that the region doesn't have to be taken into account. */
6506 || bufpos <= 0
6507 || bufpos < region_beg
6508 || bufpos >= region_end)
6509 && (multibyte_p
6510 /* We can't realize faces for different charsets differently
6511 if we don't have fonts, so we can stop here if not working
6512 on a window-system frame. */
6513 || !FRAME_WINDOW_P (f)
6514 || FACE_SUITABLE_FOR_CHAR_P (base_face, 0)))
6515 return base_face->id;
6517 /* Begin with attributes from the base face. */
6518 bcopy (base_face->lface, attrs, sizeof attrs);
6520 /* Merge in attributes specified via text properties. */
6521 if (!NILP (prop))
6522 merge_face_ref (f, prop, attrs, 1, 0);
6524 /* If in the region, merge in the region face. */
6525 if (bufpos
6526 && bufpos >= region_beg
6527 && bufpos < region_end)
6528 merge_named_face (f, Qregion, attrs, 0);
6530 /* Look up a realized face with the given face attributes,
6531 or realize a new one for ASCII characters. */
6532 return lookup_face (f, attrs);
6536 /* Merge a face into a realized face.
6538 F is frame where faces are (to be) realized.
6540 FACE_NAME is named face to merge.
6542 If FACE_NAME is nil, FACE_ID is face_id of realized face to merge.
6544 If FACE_NAME is t, FACE_ID is lface_id of face to merge.
6546 BASE_FACE_ID is realized face to merge into.
6548 Return new face id.
6552 merge_faces (f, face_name, face_id, base_face_id)
6553 struct frame *f;
6554 Lisp_Object face_name;
6555 int face_id, base_face_id;
6557 Lisp_Object attrs[LFACE_VECTOR_SIZE];
6558 struct face *base_face;
6560 base_face = FACE_FROM_ID (f, base_face_id);
6561 if (!base_face)
6562 return base_face_id;
6564 if (EQ (face_name, Qt))
6566 if (face_id < 0 || face_id >= lface_id_to_name_size)
6567 return base_face_id;
6568 face_name = lface_id_to_name[face_id];
6569 /* When called during make-frame, lookup_derived_face may fail
6570 if the faces are uninitialized. Don't signal an error. */
6571 face_id = lookup_derived_face (f, face_name, base_face_id, 0);
6572 return (face_id >= 0 ? face_id : base_face_id);
6575 /* Begin with attributes from the base face. */
6576 bcopy (base_face->lface, attrs, sizeof attrs);
6578 if (!NILP (face_name))
6580 if (!merge_named_face (f, face_name, attrs, 0))
6581 return base_face_id;
6583 else
6585 struct face *face;
6586 if (face_id < 0)
6587 return base_face_id;
6588 face = FACE_FROM_ID (f, face_id);
6589 if (!face)
6590 return base_face_id;
6591 merge_face_vectors (f, face->lface, attrs, 0);
6594 /* Look up a realized face with the given face attributes,
6595 or realize a new one for ASCII characters. */
6596 return lookup_face (f, attrs);
6601 #ifndef HAVE_X_WINDOWS
6602 DEFUN ("x-load-color-file", Fx_load_color_file,
6603 Sx_load_color_file, 1, 1, 0,
6604 doc: /* Create an alist of color entries from an external file.
6606 The file should define one named RGB color per line like so:
6607 R G B name
6608 where R,G,B are numbers between 0 and 255 and name is an arbitrary string. */)
6609 (filename)
6610 Lisp_Object filename;
6612 FILE *fp;
6613 Lisp_Object cmap = Qnil;
6614 Lisp_Object abspath;
6616 CHECK_STRING (filename);
6617 abspath = Fexpand_file_name (filename, Qnil);
6619 fp = fopen (SDATA (filename), "rt");
6620 if (fp)
6622 char buf[512];
6623 int red, green, blue;
6624 int num;
6626 BLOCK_INPUT;
6628 while (fgets (buf, sizeof (buf), fp) != NULL) {
6629 if (sscanf (buf, "%u %u %u %n", &red, &green, &blue, &num) == 3)
6631 char *name = buf + num;
6632 num = strlen (name) - 1;
6633 if (name[num] == '\n')
6634 name[num] = 0;
6635 cmap = Fcons (Fcons (build_string (name),
6636 #ifdef WINDOWSNT
6637 make_number (RGB (red, green, blue))),
6638 #else
6639 make_number ((red << 16) | (green << 8) | blue)),
6640 #endif
6641 cmap);
6644 fclose (fp);
6646 UNBLOCK_INPUT;
6649 return cmap;
6651 #endif
6654 /***********************************************************************
6655 Tests
6656 ***********************************************************************/
6658 #if GLYPH_DEBUG
6660 /* Print the contents of the realized face FACE to stderr. */
6662 static void
6663 dump_realized_face (face)
6664 struct face *face;
6666 fprintf (stderr, "ID: %d\n", face->id);
6667 #ifdef HAVE_X_WINDOWS
6668 fprintf (stderr, "gc: %ld\n", (long) face->gc);
6669 #endif
6670 fprintf (stderr, "foreground: 0x%lx (%s)\n",
6671 face->foreground,
6672 SDATA (face->lface[LFACE_FOREGROUND_INDEX]));
6673 fprintf (stderr, "background: 0x%lx (%s)\n",
6674 face->background,
6675 SDATA (face->lface[LFACE_BACKGROUND_INDEX]));
6676 if (face->font)
6677 fprintf (stderr, "font_name: %s (%s)\n",
6678 SDATA (face->font->props[FONT_NAME_INDEX]),
6679 SDATA (face->lface[LFACE_FAMILY_INDEX]));
6680 #ifdef HAVE_X_WINDOWS
6681 fprintf (stderr, "font = %p\n", face->font);
6682 #endif
6683 fprintf (stderr, "fontset: %d\n", face->fontset);
6684 fprintf (stderr, "underline: %d (%s)\n",
6685 face->underline_p,
6686 SDATA (Fsymbol_name (face->lface[LFACE_UNDERLINE_INDEX])));
6687 fprintf (stderr, "hash: %d\n", face->hash);
6691 DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, doc: /* */)
6693 Lisp_Object n;
6695 if (NILP (n))
6697 int i;
6699 fprintf (stderr, "font selection order: ");
6700 for (i = 0; i < DIM (font_sort_order); ++i)
6701 fprintf (stderr, "%d ", font_sort_order[i]);
6702 fprintf (stderr, "\n");
6704 fprintf (stderr, "alternative fonts: ");
6705 debug_print (Vface_alternative_font_family_alist);
6706 fprintf (stderr, "\n");
6708 for (i = 0; i < FRAME_FACE_CACHE (SELECTED_FRAME ())->used; ++i)
6709 Fdump_face (make_number (i));
6711 else
6713 struct face *face;
6714 CHECK_NUMBER (n);
6715 face = FACE_FROM_ID (SELECTED_FRAME (), XINT (n));
6716 if (face == NULL)
6717 error ("Not a valid face");
6718 dump_realized_face (face);
6721 return Qnil;
6725 DEFUN ("show-face-resources", Fshow_face_resources, Sshow_face_resources,
6726 0, 0, 0, doc: /* */)
6729 fprintf (stderr, "number of colors = %d\n", ncolors_allocated);
6730 fprintf (stderr, "number of pixmaps = %d\n", npixmaps_allocated);
6731 fprintf (stderr, "number of GCs = %d\n", ngcs);
6732 return Qnil;
6735 #endif /* GLYPH_DEBUG != 0 */
6739 /***********************************************************************
6740 Initialization
6741 ***********************************************************************/
6743 void
6744 syms_of_xfaces ()
6746 Qface = intern ("face");
6747 staticpro (&Qface);
6748 Qface_no_inherit = intern ("face-no-inherit");
6749 staticpro (&Qface_no_inherit);
6750 Qbitmap_spec_p = intern ("bitmap-spec-p");
6751 staticpro (&Qbitmap_spec_p);
6752 Qframe_set_background_mode = intern ("frame-set-background-mode");
6753 staticpro (&Qframe_set_background_mode);
6755 /* Lisp face attribute keywords. */
6756 QCfamily = intern (":family");
6757 staticpro (&QCfamily);
6758 QCheight = intern (":height");
6759 staticpro (&QCheight);
6760 QCweight = intern (":weight");
6761 staticpro (&QCweight);
6762 QCslant = intern (":slant");
6763 staticpro (&QCslant);
6764 QCunderline = intern (":underline");
6765 staticpro (&QCunderline);
6766 QCinverse_video = intern (":inverse-video");
6767 staticpro (&QCinverse_video);
6768 QCreverse_video = intern (":reverse-video");
6769 staticpro (&QCreverse_video);
6770 QCforeground = intern (":foreground");
6771 staticpro (&QCforeground);
6772 QCbackground = intern (":background");
6773 staticpro (&QCbackground);
6774 QCstipple = intern (":stipple");
6775 staticpro (&QCstipple);
6776 QCwidth = intern (":width");
6777 staticpro (&QCwidth);
6778 QCfont = intern (":font");
6779 staticpro (&QCfont);
6780 QCfontset = intern (":fontset");
6781 staticpro (&QCfontset);
6782 QCbold = intern (":bold");
6783 staticpro (&QCbold);
6784 QCitalic = intern (":italic");
6785 staticpro (&QCitalic);
6786 QCoverline = intern (":overline");
6787 staticpro (&QCoverline);
6788 QCstrike_through = intern (":strike-through");
6789 staticpro (&QCstrike_through);
6790 QCbox = intern (":box");
6791 staticpro (&QCbox);
6792 QCinherit = intern (":inherit");
6793 staticpro (&QCinherit);
6795 /* Symbols used for Lisp face attribute values. */
6796 QCcolor = intern (":color");
6797 staticpro (&QCcolor);
6798 QCline_width = intern (":line-width");
6799 staticpro (&QCline_width);
6800 QCstyle = intern (":style");
6801 staticpro (&QCstyle);
6802 Qreleased_button = intern ("released-button");
6803 staticpro (&Qreleased_button);
6804 Qpressed_button = intern ("pressed-button");
6805 staticpro (&Qpressed_button);
6806 Qnormal = intern ("normal");
6807 staticpro (&Qnormal);
6808 Qultra_light = intern ("ultra-light");
6809 staticpro (&Qultra_light);
6810 Qextra_light = intern ("extra-light");
6811 staticpro (&Qextra_light);
6812 Qlight = intern ("light");
6813 staticpro (&Qlight);
6814 Qsemi_light = intern ("semi-light");
6815 staticpro (&Qsemi_light);
6816 Qsemi_bold = intern ("semi-bold");
6817 staticpro (&Qsemi_bold);
6818 Qbold = intern ("bold");
6819 staticpro (&Qbold);
6820 Qextra_bold = intern ("extra-bold");
6821 staticpro (&Qextra_bold);
6822 Qultra_bold = intern ("ultra-bold");
6823 staticpro (&Qultra_bold);
6824 Qoblique = intern ("oblique");
6825 staticpro (&Qoblique);
6826 Qitalic = intern ("italic");
6827 staticpro (&Qitalic);
6828 Qreverse_oblique = intern ("reverse-oblique");
6829 staticpro (&Qreverse_oblique);
6830 Qreverse_italic = intern ("reverse-italic");
6831 staticpro (&Qreverse_italic);
6832 Qultra_condensed = intern ("ultra-condensed");
6833 staticpro (&Qultra_condensed);
6834 Qextra_condensed = intern ("extra-condensed");
6835 staticpro (&Qextra_condensed);
6836 Qcondensed = intern ("condensed");
6837 staticpro (&Qcondensed);
6838 Qsemi_condensed = intern ("semi-condensed");
6839 staticpro (&Qsemi_condensed);
6840 Qsemi_expanded = intern ("semi-expanded");
6841 staticpro (&Qsemi_expanded);
6842 Qexpanded = intern ("expanded");
6843 staticpro (&Qexpanded);
6844 Qextra_expanded = intern ("extra-expanded");
6845 staticpro (&Qextra_expanded);
6846 Qultra_expanded = intern ("ultra-expanded");
6847 staticpro (&Qultra_expanded);
6848 Qbackground_color = intern ("background-color");
6849 staticpro (&Qbackground_color);
6850 Qforeground_color = intern ("foreground-color");
6851 staticpro (&Qforeground_color);
6852 Qunspecified = intern ("unspecified");
6853 staticpro (&Qunspecified);
6854 Qignore_defface = intern (":ignore-defface");
6855 staticpro (&Qignore_defface);
6857 Qface_alias = intern ("face-alias");
6858 staticpro (&Qface_alias);
6859 Qdefault = intern ("default");
6860 staticpro (&Qdefault);
6861 Qtool_bar = intern ("tool-bar");
6862 staticpro (&Qtool_bar);
6863 Qregion = intern ("region");
6864 staticpro (&Qregion);
6865 Qfringe = intern ("fringe");
6866 staticpro (&Qfringe);
6867 Qheader_line = intern ("header-line");
6868 staticpro (&Qheader_line);
6869 Qscroll_bar = intern ("scroll-bar");
6870 staticpro (&Qscroll_bar);
6871 Qmenu = intern ("menu");
6872 staticpro (&Qmenu);
6873 Qcursor = intern ("cursor");
6874 staticpro (&Qcursor);
6875 Qborder = intern ("border");
6876 staticpro (&Qborder);
6877 Qmouse = intern ("mouse");
6878 staticpro (&Qmouse);
6879 Qmode_line_inactive = intern ("mode-line-inactive");
6880 staticpro (&Qmode_line_inactive);
6881 Qvertical_border = intern ("vertical-border");
6882 staticpro (&Qvertical_border);
6883 Qtty_color_desc = intern ("tty-color-desc");
6884 staticpro (&Qtty_color_desc);
6885 Qtty_color_standard_values = intern ("tty-color-standard-values");
6886 staticpro (&Qtty_color_standard_values);
6887 Qtty_color_by_index = intern ("tty-color-by-index");
6888 staticpro (&Qtty_color_by_index);
6889 Qtty_color_alist = intern ("tty-color-alist");
6890 staticpro (&Qtty_color_alist);
6891 Qscalable_fonts_allowed = intern ("scalable-fonts-allowed");
6892 staticpro (&Qscalable_fonts_allowed);
6894 Vparam_value_alist = Fcons (Fcons (Qnil, Qnil), Qnil);
6895 staticpro (&Vparam_value_alist);
6896 Vface_alternative_font_family_alist = Qnil;
6897 staticpro (&Vface_alternative_font_family_alist);
6898 Vface_alternative_font_registry_alist = Qnil;
6899 staticpro (&Vface_alternative_font_registry_alist);
6901 defsubr (&Sinternal_make_lisp_face);
6902 defsubr (&Sinternal_lisp_face_p);
6903 defsubr (&Sinternal_set_lisp_face_attribute);
6904 #ifdef HAVE_WINDOW_SYSTEM
6905 defsubr (&Sinternal_set_lisp_face_attribute_from_resource);
6906 #endif
6907 defsubr (&Scolor_gray_p);
6908 defsubr (&Scolor_supported_p);
6909 #ifndef HAVE_X_WINDOWS
6910 defsubr (&Sx_load_color_file);
6911 #endif
6912 defsubr (&Sface_attribute_relative_p);
6913 defsubr (&Smerge_face_attribute);
6914 defsubr (&Sinternal_get_lisp_face_attribute);
6915 defsubr (&Sinternal_lisp_face_attribute_values);
6916 defsubr (&Sinternal_lisp_face_equal_p);
6917 defsubr (&Sinternal_lisp_face_empty_p);
6918 defsubr (&Sinternal_copy_lisp_face);
6919 defsubr (&Sinternal_merge_in_global_face);
6920 defsubr (&Sface_font);
6921 defsubr (&Sframe_face_alist);
6922 defsubr (&Sdisplay_supports_face_attributes_p);
6923 defsubr (&Scolor_distance);
6924 defsubr (&Sinternal_set_font_selection_order);
6925 defsubr (&Sinternal_set_alternative_font_family_alist);
6926 defsubr (&Sinternal_set_alternative_font_registry_alist);
6927 defsubr (&Sface_attributes_as_vector);
6928 #if GLYPH_DEBUG
6929 defsubr (&Sdump_face);
6930 defsubr (&Sshow_face_resources);
6931 #endif /* GLYPH_DEBUG */
6932 defsubr (&Sclear_face_cache);
6933 defsubr (&Stty_suppress_bold_inverse_default_colors);
6935 #if defined DEBUG_X_COLORS && defined HAVE_X_WINDOWS
6936 defsubr (&Sdump_colors);
6937 #endif
6939 DEFVAR_LISP ("font-list-limit", &Vfont_list_limit,
6940 doc: /* *Limit for font matching.
6941 If an integer > 0, font matching functions won't load more than
6942 that number of fonts when searching for a matching font. */);
6943 Vfont_list_limit = make_number (DEFAULT_FONT_LIST_LIMIT);
6945 DEFVAR_LISP ("face-new-frame-defaults", &Vface_new_frame_defaults,
6946 doc: /* List of global face definitions (for internal use only.) */);
6947 Vface_new_frame_defaults = Qnil;
6949 DEFVAR_LISP ("face-default-stipple", &Vface_default_stipple,
6950 doc: /* *Default stipple pattern used on monochrome displays.
6951 This stipple pattern is used on monochrome displays
6952 instead of shades of gray for a face background color.
6953 See `set-face-stipple' for possible values for this variable. */);
6954 Vface_default_stipple = build_string ("gray3");
6956 DEFVAR_LISP ("tty-defined-color-alist", &Vtty_defined_color_alist,
6957 doc: /* An alist of defined terminal colors and their RGB values. */);
6958 Vtty_defined_color_alist = Qnil;
6960 DEFVAR_LISP ("scalable-fonts-allowed", &Vscalable_fonts_allowed,
6961 doc: /* Allowed scalable fonts.
6962 A value of nil means don't allow any scalable fonts.
6963 A value of t means allow any scalable font.
6964 Otherwise, value must be a list of regular expressions. A font may be
6965 scaled if its name matches a regular expression in the list.
6966 Note that if value is nil, a scalable font might still be used, if no
6967 other font of the appropriate family and registry is available. */);
6968 Vscalable_fonts_allowed = Qnil;
6970 DEFVAR_LISP ("face-ignored-fonts", &Vface_ignored_fonts,
6971 doc: /* List of ignored fonts.
6972 Each element is a regular expression that matches names of fonts to
6973 ignore. */);
6974 Vface_ignored_fonts = Qnil;
6976 DEFVAR_LISP ("face-remapping-alist", &Vface_remapping_alist,
6977 doc: /* Alist of face remappings.
6978 Each element is of the form:
6980 (FACE REPLACEMENT...),
6982 which causes display of the face FACE to use REPLACEMENT... instead.
6983 REPLACEMENT... is interpreted the same way the value of a `face' text
6984 property is: it may be (1) A face name, (2) A list of face names, (3) A
6985 property-list of face attribute/value pairs, or (4) A list of face names
6986 intermixed with lists containing face attribute/value pairs.
6988 Multiple entries in REPLACEMENT... are merged together to form the final
6989 result, with faces or attributes earlier in the list taking precedence
6990 over those that are later.
6992 Face-name remapping cycles are suppressed; recursive references use the
6993 underlying face instead of the remapped face. So a remapping of the form:
6995 (FACE EXTRA-FACE... FACE)
6999 (FACE (FACE-ATTR VAL ...) FACE)
7001 will cause EXTRA-FACE... or (FACE-ATTR VAL ...) to be _merged_ with the
7002 existing definition of FACE. Note that for the default face, this isn't
7003 necessary, as every face inherits from the default face.
7005 Making this variable buffer-local is a good way to allow buffer-specific
7006 face definitions. For instance, the mode my-mode could define a face
7007 `my-mode-default', and then in the mode setup function, do:
7009 (set (make-local-variable 'face-remapping-alist)
7010 '((default my-mode-default)))). */);
7011 Vface_remapping_alist = Qnil;
7013 DEFVAR_LISP ("face-font-rescale-alist", &Vface_font_rescale_alist,
7014 doc: /* Alist of fonts vs the rescaling factors.
7015 Each element is a cons (FONT-NAME-PATTERN . RESCALE-RATIO), where
7016 FONT-NAME-PATTERN is a regular expression matching a font name, and
7017 RESCALE-RATIO is a floating point number to specify how much larger
7018 \(or smaller) font we should use. For instance, if a face requests
7019 a font of 10 point, we actually use a font of 10 * RESCALE-RATIO point. */);
7020 Vface_font_rescale_alist = Qnil;
7022 #ifdef HAVE_WINDOW_SYSTEM
7023 defsubr (&Sbitmap_spec_p);
7024 defsubr (&Sx_list_fonts);
7025 defsubr (&Sinternal_face_x_get_resource);
7026 defsubr (&Sx_family_fonts);
7027 #endif
7028 #if defined(HAVE_WINDOW_SYSTEM) || defined(__MSDOS__)
7029 defsubr (&Sx_font_family_list);
7030 #endif /* HAVE_WINDOW_SYSTEM || __MSDOS__ */
7033 /* arch-tag: 8a0f7598-5517-408d-9ab3-1da6fcd4c749
7034 (do not change this comment) */