| 1 | /* xfaces.c -- "Face" primitives. |
| 2 | Copyright (C) 1993, 1994, 1998, 1999 Free Software Foundation. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* New face implementation by Gerd Moellmann <gerd@gnu.org>. */ |
| 22 | |
| 23 | /* Faces. |
| 24 | |
| 25 | When using Emacs with X, the display style of characters can be |
| 26 | changed by defining `faces'. Each face can specify the following |
| 27 | display attributes: |
| 28 | |
| 29 | 1. Font family name. |
| 30 | |
| 31 | 2. Relative proportionate width, aka character set width or set |
| 32 | width (swidth), e.g. `semi-compressed'. |
| 33 | |
| 34 | 3. Font height in 1/10pt. |
| 35 | |
| 36 | 4. Font weight, e.g. `bold'. |
| 37 | |
| 38 | 5. Font slant, e.g. `italic'. |
| 39 | |
| 40 | 6. Foreground color. |
| 41 | |
| 42 | 7. Background color. |
| 43 | |
| 44 | 8. Whether or not characters should be underlined, and in what color. |
| 45 | |
| 46 | 9. Whether or not characters should be displayed in inverse video. |
| 47 | |
| 48 | 10. A background stipple, a bitmap. |
| 49 | |
| 50 | 11. Whether or not characters should be overlined, and in what color. |
| 51 | |
| 52 | 12. Whether or not characters should be strike-through, and in what |
| 53 | color. |
| 54 | |
| 55 | 13. Whether or not a box should be drawn around characters, the box |
| 56 | type, and, for simple boxes, in what color. |
| 57 | |
| 58 | 14. Font or fontset pattern, or nil. This is a special attribute. |
| 59 | When this attribyte is specified, the face uses a font opened by |
| 60 | that pattern as is. In addition, all the other font-related |
| 61 | attributes (1st thru 5th) are generated from the opened font name. |
| 62 | On the other hand, if one of the other font-related attributes are |
| 63 | specified, this attribute is set to nil. In that case, the face |
| 64 | doesn't inherit this attribute from the `default' face, and uses a |
| 65 | font determined by the other attributes (those may be inherited |
| 66 | from the `default' face). |
| 67 | |
| 68 | Faces are frame-local by nature because Emacs allows to define the |
| 69 | same named face (face names are symbols) differently for different |
| 70 | frames. Each frame has an alist of face definitions for all named |
| 71 | faces. The value of a named face in such an alist is a Lisp vector |
| 72 | with the symbol `face' in slot 0, and a slot for each of the face |
| 73 | attributes mentioned above. |
| 74 | |
| 75 | There is also a global face alist `Vface_new_frame_defaults'. Face |
| 76 | definitions from this list are used to initialize faces of newly |
| 77 | created frames. |
| 78 | |
| 79 | A face doesn't have to specify all attributes. Those not specified |
| 80 | have a value of `unspecified'. Faces specifying all attributes but |
| 81 | the 14th are called `fully-specified'. |
| 82 | |
| 83 | |
| 84 | Face merging. |
| 85 | |
| 86 | The display style of a given character in the text is determined by |
| 87 | combining several faces. This process is called `face merging'. |
| 88 | Any aspect of the display style that isn't specified by overlays or |
| 89 | text properties is taken from the `default' face. Since it is made |
| 90 | sure that the default face is always fully-specified, face merging |
| 91 | always results in a fully-specified face. |
| 92 | |
| 93 | |
| 94 | Face realization. |
| 95 | |
| 96 | After all face attributes for a character have been determined by |
| 97 | merging faces of that character, that face is `realized'. The |
| 98 | realization process maps face attributes to what is physically |
| 99 | available on the system where Emacs runs. The result is a |
| 100 | `realized face' in form of a struct face which is stored in the |
| 101 | face cache of the frame on which it was realized. |
| 102 | |
| 103 | Face realization is done in the context of the character to display |
| 104 | because different fonts may be used for different characters. In |
| 105 | other words, for characters that have different font |
| 106 | specifications, different realized faces are needed to display |
| 107 | them. |
| 108 | |
| 109 | Font specification is done by fontsets. See the comment in |
| 110 | fontset.c for the details. In the current implementation, all ASCII |
| 111 | characters share the same font in a fontset. |
| 112 | |
| 113 | Faces are at first realized for ASCII characters, and, at that |
| 114 | time, assigned a specific realized fontset. Hereafter, we call |
| 115 | such a face as `ASCII face'. When a face for a multibyte character |
| 116 | is realized, it inherits (thus shares) a fontset of an ASCII face |
| 117 | that has the same attributes other than font-related ones. |
| 118 | |
| 119 | Thus, all realzied face have a realized fontset. |
| 120 | |
| 121 | |
| 122 | Unibyte text. |
| 123 | |
| 124 | Unibyte text (i.e. raw 8-bit characters) is displayed with the same |
| 125 | font as ASCII characters. That is because it is expected that |
| 126 | unibyte text users specify a font that is suitable both for ASCII |
| 127 | and raw 8-bit characters. |
| 128 | |
| 129 | |
| 130 | Font selection. |
| 131 | |
| 132 | Font selection tries to find the best available matching font for a |
| 133 | given (character, face) combination. |
| 134 | |
| 135 | If the face specifies a fontset name, that fontset determines a |
| 136 | pattern for fonts of the given character. If the face specifies a |
| 137 | font name or the other font-related attributes, a fontset is |
| 138 | realized from the default fontset. In that case, that |
| 139 | specification determines a pattern for ASCII characters and the |
| 140 | default fontset determines a pattern for multibyte characters. |
| 141 | |
| 142 | Available fonts on the system on which Emacs runs are then matched |
| 143 | against the font pattern. The result of font selection is the best |
| 144 | match for the given face attributes in this font list. |
| 145 | |
| 146 | Font selection can be influenced by the user. |
| 147 | |
| 148 | 1. The user can specify the relative importance he gives the face |
| 149 | attributes width, height, weight, and slant by setting |
| 150 | face-font-selection-order (faces.el) to a list of face attribute |
| 151 | names. The default is '(:width :height :weight :slant), and means |
| 152 | that font selection first tries to find a good match for the font |
| 153 | width specified by a face, then---within fonts with that |
| 154 | width---tries to find a best match for the specified font height, |
| 155 | etc. |
| 156 | |
| 157 | 2. Setting face-alternative-font-family-alist allows the user to |
| 158 | specify alternative font families to try if a family specified by a |
| 159 | face doesn't exist. |
| 160 | |
| 161 | |
| 162 | Character compositition. |
| 163 | |
| 164 | Usually, the realization process is already finished when Emacs |
| 165 | actually reflects the desired glyph matrix on the screen. However, |
| 166 | on displaying a composition (sequence of characters to be composed |
| 167 | on the screen), a suitable font for the components of the |
| 168 | composition is selected and realized while drawing them on the |
| 169 | screen, i.e. the realization process is delayed but in principle |
| 170 | the same. |
| 171 | |
| 172 | |
| 173 | Initialization of basic faces. |
| 174 | |
| 175 | The faces `default', `modeline' are considered `basic faces'. |
| 176 | When redisplay happens the first time for a newly created frame, |
| 177 | basic faces are realized for CHARSET_ASCII. Frame parameters are |
| 178 | used to fill in unspecified attributes of the default face. */ |
| 179 | |
| 180 | /* Define SCALABLE_FONTS to a non-zero value to enable scalable |
| 181 | font use. Define it to zero to disable scalable font use. |
| 182 | |
| 183 | Use of too many or too large scalable fonts can crash XFree86 |
| 184 | servers. That's why I've put the code dealing with scalable fonts |
| 185 | in #if's. */ |
| 186 | |
| 187 | #define SCALABLE_FONTS 1 |
| 188 | |
| 189 | #include <config.h> |
| 190 | #include <sys/types.h> |
| 191 | #include <sys/stat.h> |
| 192 | #include "lisp.h" |
| 193 | #include "charset.h" |
| 194 | #include "frame.h" |
| 195 | |
| 196 | #ifdef HAVE_X_WINDOWS |
| 197 | #include "xterm.h" |
| 198 | #include "fontset.h" |
| 199 | #ifdef USE_MOTIF |
| 200 | #include <Xm/Xm.h> |
| 201 | #include <Xm/XmStrDefs.h> |
| 202 | #endif /* USE_MOTIF */ |
| 203 | #endif |
| 204 | |
| 205 | #ifdef MSDOS |
| 206 | #include "dosfns.h" |
| 207 | #endif |
| 208 | |
| 209 | #ifdef WINDOWSNT |
| 210 | #include "w32term.h" |
| 211 | #include "fontset.h" |
| 212 | /* Redefine X specifics to W32 equivalents to avoid cluttering the |
| 213 | code with #ifdef blocks. */ |
| 214 | #define FRAME_X_DISPLAY_INFO FRAME_W32_DISPLAY_INFO |
| 215 | #define x_display_info w32_display_info |
| 216 | #define FRAME_X_FONT_TABLE FRAME_W32_FONT_TABLE |
| 217 | #define check_x check_w32 |
| 218 | #define x_list_fonts w32_list_fonts |
| 219 | #define GCGraphicsExposures 0 |
| 220 | /* For historic reasons, FONT_WIDTH refers to average width on W32, |
| 221 | not maximum as on X. Redefine here. */ |
| 222 | #define FONT_WIDTH FONT_MAX_WIDTH |
| 223 | #endif |
| 224 | |
| 225 | #include "buffer.h" |
| 226 | #include "dispextern.h" |
| 227 | #include "blockinput.h" |
| 228 | #include "window.h" |
| 229 | #include "intervals.h" |
| 230 | |
| 231 | #ifdef HAVE_X_WINDOWS |
| 232 | |
| 233 | /* Compensate for a bug in Xos.h on some systems, on which it requires |
| 234 | time.h. On some such systems, Xos.h tries to redefine struct |
| 235 | timeval and struct timezone if USG is #defined while it is |
| 236 | #included. */ |
| 237 | |
| 238 | #ifdef XOS_NEEDS_TIME_H |
| 239 | #include <time.h> |
| 240 | #undef USG |
| 241 | #include <X11/Xos.h> |
| 242 | #define USG |
| 243 | #define __TIMEVAL__ |
| 244 | #else /* not XOS_NEEDS_TIME_H */ |
| 245 | #include <X11/Xos.h> |
| 246 | #endif /* not XOS_NEEDS_TIME_H */ |
| 247 | |
| 248 | #endif /* HAVE_X_WINDOWS */ |
| 249 | |
| 250 | #include <stdio.h> |
| 251 | #include <ctype.h> |
| 252 | #include "keyboard.h" |
| 253 | |
| 254 | #ifndef max |
| 255 | #define max(A, B) ((A) > (B) ? (A) : (B)) |
| 256 | #define min(A, B) ((A) < (B) ? (A) : (B)) |
| 257 | #define abs(X) ((X) < 0 ? -(X) : (X)) |
| 258 | #endif |
| 259 | |
| 260 | /* Non-zero if face attribute ATTR is unspecified. */ |
| 261 | |
| 262 | #define UNSPECIFIEDP(ATTR) EQ ((ATTR), Qunspecified) |
| 263 | |
| 264 | /* Value is the number of elements of VECTOR. */ |
| 265 | |
| 266 | #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR)) |
| 267 | |
| 268 | /* Make a copy of string S on the stack using alloca. Value is a pointer |
| 269 | to the copy. */ |
| 270 | |
| 271 | #define STRDUPA(S) strcpy ((char *) alloca (strlen ((S)) + 1), (S)) |
| 272 | |
| 273 | /* Make a copy of the contents of Lisp string S on the stack using |
| 274 | alloca. Value is a pointer to the copy. */ |
| 275 | |
| 276 | #define LSTRDUPA(S) STRDUPA (XSTRING ((S))->data) |
| 277 | |
| 278 | /* Size of hash table of realized faces in face caches (should be a |
| 279 | prime number). */ |
| 280 | |
| 281 | #define FACE_CACHE_BUCKETS_SIZE 1001 |
| 282 | |
| 283 | /* A definition of XColor for non-X frames. */ |
| 284 | #ifndef HAVE_X_WINDOWS |
| 285 | typedef struct { |
| 286 | unsigned long pixel; |
| 287 | unsigned short red, green, blue; |
| 288 | char flags; |
| 289 | char pad; |
| 290 | } XColor; |
| 291 | #endif |
| 292 | |
| 293 | /* Keyword symbols used for face attribute names. */ |
| 294 | |
| 295 | Lisp_Object QCfamily, QCheight, QCweight, QCslant, QCunderline; |
| 296 | Lisp_Object QCinverse_video, QCforeground, QCbackground, QCstipple; |
| 297 | Lisp_Object QCwidth, QCfont, QCbold, QCitalic; |
| 298 | Lisp_Object QCreverse_video; |
| 299 | Lisp_Object QCoverline, QCstrike_through, QCbox; |
| 300 | |
| 301 | /* Symbols used for attribute values. */ |
| 302 | |
| 303 | Lisp_Object Qnormal, Qbold, Qultra_light, Qextra_light, Qlight; |
| 304 | Lisp_Object Qsemi_light, Qsemi_bold, Qextra_bold, Qultra_bold; |
| 305 | Lisp_Object Qoblique, Qitalic, Qreverse_oblique, Qreverse_italic; |
| 306 | Lisp_Object Qultra_condensed, Qextra_condensed, Qcondensed; |
| 307 | Lisp_Object Qsemi_condensed, Qsemi_expanded, Qexpanded, Qextra_expanded; |
| 308 | Lisp_Object Qultra_expanded; |
| 309 | Lisp_Object Qreleased_button, Qpressed_button; |
| 310 | Lisp_Object QCstyle, QCcolor, QCline_width; |
| 311 | Lisp_Object Qunspecified; |
| 312 | |
| 313 | char unspecified_fg[] = "unspecified-fg", unspecified_bg[] = "unspecified-bg"; |
| 314 | |
| 315 | /* The name of the function to call when the background of the frame |
| 316 | has changed, frame_update_face_colors. */ |
| 317 | |
| 318 | Lisp_Object Qframe_update_face_colors; |
| 319 | |
| 320 | /* Names of basic faces. */ |
| 321 | |
| 322 | Lisp_Object Qdefault, Qtool_bar, Qregion, Qfringe; |
| 323 | Lisp_Object Qheader_line, Qscroll_bar, Qcursor, Qborder, Qmouse, Qmenu; |
| 324 | extern Lisp_Object Qmode_line; |
| 325 | |
| 326 | /* The symbol `face-alias'. A symbols having that property is an |
| 327 | alias for another face. Value of the property is the name of |
| 328 | the aliased face. */ |
| 329 | |
| 330 | Lisp_Object Qface_alias; |
| 331 | |
| 332 | /* Names of frame parameters related to faces. */ |
| 333 | |
| 334 | extern Lisp_Object Qscroll_bar_foreground, Qscroll_bar_background; |
| 335 | extern Lisp_Object Qborder_color, Qcursor_color, Qmouse_color; |
| 336 | |
| 337 | /* Default stipple pattern used on monochrome displays. This stipple |
| 338 | pattern is used on monochrome displays instead of shades of gray |
| 339 | for a face background color. See `set-face-stipple' for possible |
| 340 | values for this variable. */ |
| 341 | |
| 342 | Lisp_Object Vface_default_stipple; |
| 343 | |
| 344 | /* Alist of alternative font families. Each element is of the form |
| 345 | (FAMILY FAMILY1 FAMILY2 ...). If fonts of FAMILY can't be loaded, |
| 346 | try FAMILY1, then FAMILY2, ... */ |
| 347 | |
| 348 | Lisp_Object Vface_alternative_font_family_alist; |
| 349 | |
| 350 | /* Allowed scalable fonts. A value of nil means don't allow any |
| 351 | scalable fonts. A value of t means allow the use of any scalable |
| 352 | font. Otherwise, value must be a list of regular expressions. A |
| 353 | font may be scaled if its name matches a regular expression in the |
| 354 | list. */ |
| 355 | |
| 356 | #if SCALABLE_FONTS |
| 357 | Lisp_Object Vscalable_fonts_allowed; |
| 358 | #endif |
| 359 | |
| 360 | /* Maximum number of fonts to consider in font_list. If not an |
| 361 | integer > 0, DEFAULT_FONT_LIST_LIMIT is used instead. */ |
| 362 | |
| 363 | Lisp_Object Vfont_list_limit; |
| 364 | #define DEFAULT_FONT_LIST_LIMIT 100 |
| 365 | |
| 366 | /* The symbols `foreground-color' and `background-color' which can be |
| 367 | used as part of a `face' property. This is for compatibility with |
| 368 | Emacs 20.2. */ |
| 369 | |
| 370 | Lisp_Object Qforeground_color, Qbackground_color; |
| 371 | |
| 372 | /* The symbols `face' and `mouse-face' used as text properties. */ |
| 373 | |
| 374 | Lisp_Object Qface; |
| 375 | extern Lisp_Object Qmouse_face; |
| 376 | |
| 377 | /* Error symbol for wrong_type_argument in load_pixmap. */ |
| 378 | |
| 379 | Lisp_Object Qbitmap_spec_p; |
| 380 | |
| 381 | /* Alist of global face definitions. Each element is of the form |
| 382 | (FACE . LFACE) where FACE is a symbol naming a face and LFACE |
| 383 | is a Lisp vector of face attributes. These faces are used |
| 384 | to initialize faces for new frames. */ |
| 385 | |
| 386 | Lisp_Object Vface_new_frame_defaults; |
| 387 | |
| 388 | /* The next ID to assign to Lisp faces. */ |
| 389 | |
| 390 | static int next_lface_id; |
| 391 | |
| 392 | /* A vector mapping Lisp face Id's to face names. */ |
| 393 | |
| 394 | static Lisp_Object *lface_id_to_name; |
| 395 | static int lface_id_to_name_size; |
| 396 | |
| 397 | /* tty color-related functions (defined on lisp/term/tty-colors.el). */ |
| 398 | Lisp_Object Qtty_color_desc, Qtty_color_by_index; |
| 399 | |
| 400 | /* Counter for calls to clear_face_cache. If this counter reaches |
| 401 | CLEAR_FONT_TABLE_COUNT, and a frame has more than |
| 402 | CLEAR_FONT_TABLE_NFONTS load, unused fonts are freed. */ |
| 403 | |
| 404 | static int clear_font_table_count; |
| 405 | #define CLEAR_FONT_TABLE_COUNT 100 |
| 406 | #define CLEAR_FONT_TABLE_NFONTS 10 |
| 407 | |
| 408 | /* Non-zero means face attributes have been changed since the last |
| 409 | redisplay. Used in redisplay_internal. */ |
| 410 | |
| 411 | int face_change_count; |
| 412 | |
| 413 | /* Non-zero means don't display bold text if a face's foreground |
| 414 | and background colors are the inverse of the default colors of the |
| 415 | display. This is a kluge to suppress `bold black' foreground text |
| 416 | which is hard to read on an LCD monitor. */ |
| 417 | |
| 418 | int tty_suppress_bold_inverse_default_colors_p; |
| 419 | |
| 420 | /* The total number of colors currently allocated. */ |
| 421 | |
| 422 | #if GLYPH_DEBUG |
| 423 | static int ncolors_allocated; |
| 424 | static int npixmaps_allocated; |
| 425 | static int ngcs; |
| 426 | #endif |
| 427 | |
| 428 | |
| 429 | \f |
| 430 | /* Function prototypes. */ |
| 431 | |
| 432 | struct font_name; |
| 433 | struct table_entry; |
| 434 | |
| 435 | static Lisp_Object resolve_face_name P_ ((Lisp_Object)); |
| 436 | static int may_use_scalable_font_p P_ ((struct font_name *, char *)); |
| 437 | static void set_font_frame_param P_ ((Lisp_Object, Lisp_Object)); |
| 438 | static int better_font_p P_ ((int *, struct font_name *, struct font_name *, |
| 439 | int)); |
| 440 | static int first_font_matching P_ ((struct frame *f, char *, |
| 441 | struct font_name *)); |
| 442 | static int x_face_list_fonts P_ ((struct frame *, char *, |
| 443 | struct font_name *, int, int, int)); |
| 444 | static int font_scalable_p P_ ((struct font_name *)); |
| 445 | static int get_lface_attributes P_ ((struct frame *, Lisp_Object, Lisp_Object *, int)); |
| 446 | static int load_pixmap P_ ((struct frame *, Lisp_Object, unsigned *, unsigned *)); |
| 447 | static unsigned char *xstrlwr P_ ((unsigned char *)); |
| 448 | static void signal_error P_ ((char *, Lisp_Object)); |
| 449 | static struct frame *frame_or_selected_frame P_ ((Lisp_Object, int)); |
| 450 | static void load_face_font P_ ((struct frame *, struct face *, int)); |
| 451 | static void load_face_colors P_ ((struct frame *, struct face *, Lisp_Object *)); |
| 452 | static void free_face_colors P_ ((struct frame *, struct face *)); |
| 453 | static int face_color_gray_p P_ ((struct frame *, char *)); |
| 454 | static char *build_font_name P_ ((struct font_name *)); |
| 455 | static void free_font_names P_ ((struct font_name *, int)); |
| 456 | static int sorted_font_list P_ ((struct frame *, char *, |
| 457 | int (*cmpfn) P_ ((const void *, const void *)), |
| 458 | struct font_name **)); |
| 459 | static int font_list P_ ((struct frame *, Lisp_Object, Lisp_Object, |
| 460 | Lisp_Object, struct font_name **)); |
| 461 | static int try_font_list P_ ((struct frame *, Lisp_Object *, Lisp_Object, |
| 462 | Lisp_Object, Lisp_Object, struct font_name **)); |
| 463 | static int cmp_font_names P_ ((const void *, const void *)); |
| 464 | static struct face *realize_face P_ ((struct face_cache *, Lisp_Object *, int, |
| 465 | struct face *, int)); |
| 466 | static struct face *realize_x_face P_ ((struct face_cache *, |
| 467 | Lisp_Object *, int, struct face *)); |
| 468 | static struct face *realize_tty_face P_ ((struct face_cache *, |
| 469 | Lisp_Object *, int)); |
| 470 | static int realize_basic_faces P_ ((struct frame *)); |
| 471 | static int realize_default_face P_ ((struct frame *)); |
| 472 | static void realize_named_face P_ ((struct frame *, Lisp_Object, int)); |
| 473 | static int lface_fully_specified_p P_ ((Lisp_Object *)); |
| 474 | static int lface_equal_p P_ ((Lisp_Object *, Lisp_Object *)); |
| 475 | static unsigned hash_string_case_insensitive P_ ((Lisp_Object)); |
| 476 | static unsigned lface_hash P_ ((Lisp_Object *)); |
| 477 | static int lface_same_font_attributes_p P_ ((Lisp_Object *, Lisp_Object *)); |
| 478 | static struct face_cache *make_face_cache P_ ((struct frame *)); |
| 479 | static void free_realized_face P_ ((struct frame *, struct face *)); |
| 480 | static void clear_face_gcs P_ ((struct face_cache *)); |
| 481 | static void free_face_cache P_ ((struct face_cache *)); |
| 482 | static int face_numeric_weight P_ ((Lisp_Object)); |
| 483 | static int face_numeric_slant P_ ((Lisp_Object)); |
| 484 | static int face_numeric_swidth P_ ((Lisp_Object)); |
| 485 | static int face_fontset P_ ((Lisp_Object *)); |
| 486 | static char *choose_face_font P_ ((struct frame *, Lisp_Object *, int, int)); |
| 487 | static void merge_face_vectors P_ ((Lisp_Object *from, Lisp_Object *)); |
| 488 | static void merge_face_vector_with_property P_ ((struct frame *, Lisp_Object *, |
| 489 | Lisp_Object)); |
| 490 | static int set_lface_from_font_name P_ ((struct frame *, Lisp_Object, |
| 491 | Lisp_Object, int, int)); |
| 492 | static Lisp_Object lface_from_face_name P_ ((struct frame *, Lisp_Object, int)); |
| 493 | static struct face *make_realized_face P_ ((Lisp_Object *)); |
| 494 | static void free_realized_faces P_ ((struct face_cache *)); |
| 495 | static char *best_matching_font P_ ((struct frame *, Lisp_Object *, |
| 496 | struct font_name *, int)); |
| 497 | static void cache_face P_ ((struct face_cache *, struct face *, unsigned)); |
| 498 | static void uncache_face P_ ((struct face_cache *, struct face *)); |
| 499 | static int xlfd_numeric_slant P_ ((struct font_name *)); |
| 500 | static int xlfd_numeric_weight P_ ((struct font_name *)); |
| 501 | static int xlfd_numeric_swidth P_ ((struct font_name *)); |
| 502 | static Lisp_Object xlfd_symbolic_slant P_ ((struct font_name *)); |
| 503 | static Lisp_Object xlfd_symbolic_weight P_ ((struct font_name *)); |
| 504 | static Lisp_Object xlfd_symbolic_swidth P_ ((struct font_name *)); |
| 505 | static int xlfd_fixed_p P_ ((struct font_name *)); |
| 506 | static int xlfd_numeric_value P_ ((struct table_entry *, int, struct font_name *, |
| 507 | int, int)); |
| 508 | static Lisp_Object xlfd_symbolic_value P_ ((struct table_entry *, int, |
| 509 | struct font_name *, int, |
| 510 | Lisp_Object)); |
| 511 | static struct table_entry *xlfd_lookup_field_contents P_ ((struct table_entry *, int, |
| 512 | struct font_name *, int)); |
| 513 | |
| 514 | #ifdef HAVE_WINDOW_SYSTEM |
| 515 | |
| 516 | static int split_font_name P_ ((struct frame *, struct font_name *, int)); |
| 517 | static int xlfd_point_size P_ ((struct frame *, struct font_name *)); |
| 518 | static void sort_fonts P_ ((struct frame *, struct font_name *, int, |
| 519 | int (*cmpfn) P_ ((const void *, const void *)))); |
| 520 | static GC x_create_gc P_ ((struct frame *, unsigned long, XGCValues *)); |
| 521 | static void x_free_gc P_ ((struct frame *, GC)); |
| 522 | static void clear_font_table P_ ((struct frame *)); |
| 523 | |
| 524 | #ifdef WINDOWSNT |
| 525 | extern Lisp_Object w32_list_fonts P_ ((struct frame *, Lisp_Object, int, int)); |
| 526 | #endif /* WINDOWSNT */ |
| 527 | |
| 528 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 529 | |
| 530 | \f |
| 531 | /*********************************************************************** |
| 532 | Utilities |
| 533 | ***********************************************************************/ |
| 534 | |
| 535 | #ifdef HAVE_X_WINDOWS |
| 536 | |
| 537 | #ifdef DEBUG_X_COLORS |
| 538 | |
| 539 | /* The following is a poor mans infrastructure for debugging X color |
| 540 | allocation problems on displays with PseudoColor-8. Some X servers |
| 541 | like 3.3.5 XF86_SVGA with Matrox cards apparently don't implement |
| 542 | color reference counts completely so that they don't signal an |
| 543 | error when a color is freed whose reference count is already 0. |
| 544 | Other X servers do. To help me debug this, the following code |
| 545 | implements a simple reference counting schema of its own, for a |
| 546 | single display/screen. --gerd. */ |
| 547 | |
| 548 | /* Reference counts for pixel colors. */ |
| 549 | |
| 550 | int color_count[256]; |
| 551 | |
| 552 | /* Register color PIXEL as allocated. */ |
| 553 | |
| 554 | void |
| 555 | register_color (pixel) |
| 556 | unsigned long pixel; |
| 557 | { |
| 558 | xassert (pixel < 256); |
| 559 | ++color_count[pixel]; |
| 560 | } |
| 561 | |
| 562 | |
| 563 | /* Register color PIXEL as deallocated. */ |
| 564 | |
| 565 | void |
| 566 | unregister_color (pixel) |
| 567 | unsigned long pixel; |
| 568 | { |
| 569 | xassert (pixel < 256); |
| 570 | if (color_count[pixel] > 0) |
| 571 | --color_count[pixel]; |
| 572 | else |
| 573 | abort (); |
| 574 | } |
| 575 | |
| 576 | |
| 577 | /* Register N colors from PIXELS as deallocated. */ |
| 578 | |
| 579 | void |
| 580 | unregister_colors (pixels, n) |
| 581 | unsigned long *pixels; |
| 582 | int n; |
| 583 | { |
| 584 | int i; |
| 585 | for (i = 0; i < n; ++i) |
| 586 | unregister_color (pixels[i]); |
| 587 | } |
| 588 | |
| 589 | #endif /* DEBUG_X_COLORS */ |
| 590 | |
| 591 | /* Free colors used on frame F. PIXELS is an array of NPIXELS pixel |
| 592 | color values. Interrupt input must be blocked when this function |
| 593 | is called. */ |
| 594 | |
| 595 | void |
| 596 | x_free_colors (f, pixels, npixels) |
| 597 | struct frame *f; |
| 598 | unsigned long *pixels; |
| 599 | int npixels; |
| 600 | { |
| 601 | int class = FRAME_X_DISPLAY_INFO (f)->visual->class; |
| 602 | |
| 603 | /* If display has an immutable color map, freeing colors is not |
| 604 | necessary and some servers don't allow it. So don't do it. */ |
| 605 | if (class != StaticColor && class != StaticGray && class != TrueColor) |
| 606 | { |
| 607 | Display *dpy = FRAME_X_DISPLAY (f); |
| 608 | Colormap cmap = FRAME_X_COLORMAP (f); |
| 609 | Screen *screen = FRAME_X_SCREEN (f); |
| 610 | int default_cmap_p = cmap == DefaultColormapOfScreen (screen); |
| 611 | |
| 612 | if (default_cmap_p) |
| 613 | { |
| 614 | /* Be paranoid. If using the default color map, don't ever |
| 615 | try to free the default black and white colors. */ |
| 616 | int screen_no = XScreenNumberOfScreen (screen); |
| 617 | unsigned long black = BlackPixel (dpy, screen_no); |
| 618 | unsigned long white = WhitePixel (dpy, screen_no); |
| 619 | unsigned long *px; |
| 620 | int i, j; |
| 621 | |
| 622 | px = (unsigned long *) alloca (npixels * sizeof *px); |
| 623 | for (i = j = 0; i < npixels; ++i) |
| 624 | if (pixels[i] != black && pixels[i] != white) |
| 625 | px[j++] = pixels[i]; |
| 626 | |
| 627 | if (j) |
| 628 | { |
| 629 | XFreeColors (dpy, cmap, px, j, 0); |
| 630 | #ifdef DEBUG_X_COLORS |
| 631 | unregister_colors (px, j); |
| 632 | #endif |
| 633 | } |
| 634 | } |
| 635 | else |
| 636 | { |
| 637 | XFreeColors (dpy, cmap, pixels, npixels, 0); |
| 638 | #ifdef DEBUG_X_COLORS |
| 639 | unregister_colors (pixels, npixels); |
| 640 | #endif |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | /* Create and return a GC for use on frame F. GC values and mask |
| 646 | are given by XGCV and MASK. */ |
| 647 | |
| 648 | static INLINE GC |
| 649 | x_create_gc (f, mask, xgcv) |
| 650 | struct frame *f; |
| 651 | unsigned long mask; |
| 652 | XGCValues *xgcv; |
| 653 | { |
| 654 | GC gc; |
| 655 | BLOCK_INPUT; |
| 656 | gc = XCreateGC (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), mask, xgcv); |
| 657 | UNBLOCK_INPUT; |
| 658 | IF_DEBUG (++ngcs); |
| 659 | return gc; |
| 660 | } |
| 661 | |
| 662 | |
| 663 | /* Free GC which was used on frame F. */ |
| 664 | |
| 665 | static INLINE void |
| 666 | x_free_gc (f, gc) |
| 667 | struct frame *f; |
| 668 | GC gc; |
| 669 | { |
| 670 | BLOCK_INPUT; |
| 671 | xassert (--ngcs >= 0); |
| 672 | XFreeGC (FRAME_X_DISPLAY (f), gc); |
| 673 | UNBLOCK_INPUT; |
| 674 | } |
| 675 | |
| 676 | #endif /* HAVE_X_WINDOWS */ |
| 677 | |
| 678 | #ifdef WINDOWSNT |
| 679 | /* W32 emulation of GCs */ |
| 680 | |
| 681 | static INLINE GC |
| 682 | x_create_gc (f, mask, xgcv) |
| 683 | struct frame *f; |
| 684 | unsigned long mask; |
| 685 | XGCValues *xgcv; |
| 686 | { |
| 687 | GC gc; |
| 688 | BLOCK_INPUT; |
| 689 | gc = XCreateGC (NULL, FRAME_W32_WINDOW (f), mask, xgcv); |
| 690 | UNBLOCK_INPUT; |
| 691 | IF_DEBUG (++ngcs); |
| 692 | return gc; |
| 693 | } |
| 694 | |
| 695 | |
| 696 | /* Free GC which was used on frame F. */ |
| 697 | |
| 698 | static INLINE void |
| 699 | x_free_gc (f, gc) |
| 700 | struct frame *f; |
| 701 | GC gc; |
| 702 | { |
| 703 | BLOCK_INPUT; |
| 704 | xassert (--ngcs >= 0); |
| 705 | xfree (gc); |
| 706 | UNBLOCK_INPUT; |
| 707 | } |
| 708 | |
| 709 | #endif /* WINDOWSNT */ |
| 710 | |
| 711 | /* Like stricmp. Used to compare parts of font names which are in |
| 712 | ISO8859-1. */ |
| 713 | |
| 714 | int |
| 715 | xstricmp (s1, s2) |
| 716 | unsigned char *s1, *s2; |
| 717 | { |
| 718 | while (*s1 && *s2) |
| 719 | { |
| 720 | unsigned char c1 = tolower (*s1); |
| 721 | unsigned char c2 = tolower (*s2); |
| 722 | if (c1 != c2) |
| 723 | return c1 < c2 ? -1 : 1; |
| 724 | ++s1, ++s2; |
| 725 | } |
| 726 | |
| 727 | if (*s1 == 0) |
| 728 | return *s2 == 0 ? 0 : -1; |
| 729 | return 1; |
| 730 | } |
| 731 | |
| 732 | |
| 733 | /* Like strlwr, which might not always be available. */ |
| 734 | |
| 735 | static unsigned char * |
| 736 | xstrlwr (s) |
| 737 | unsigned char *s; |
| 738 | { |
| 739 | unsigned char *p = s; |
| 740 | |
| 741 | for (p = s; *p; ++p) |
| 742 | *p = tolower (*p); |
| 743 | |
| 744 | return s; |
| 745 | } |
| 746 | |
| 747 | |
| 748 | /* Signal `error' with message S, and additional argument ARG. */ |
| 749 | |
| 750 | static void |
| 751 | signal_error (s, arg) |
| 752 | char *s; |
| 753 | Lisp_Object arg; |
| 754 | { |
| 755 | Fsignal (Qerror, Fcons (build_string (s), Fcons (arg, Qnil))); |
| 756 | } |
| 757 | |
| 758 | |
| 759 | /* If FRAME is nil, return a pointer to the selected frame. |
| 760 | Otherwise, check that FRAME is a live frame, and return a pointer |
| 761 | to it. NPARAM is the parameter number of FRAME, for |
| 762 | CHECK_LIVE_FRAME. This is here because it's a frequent pattern in |
| 763 | Lisp function definitions. */ |
| 764 | |
| 765 | static INLINE struct frame * |
| 766 | frame_or_selected_frame (frame, nparam) |
| 767 | Lisp_Object frame; |
| 768 | int nparam; |
| 769 | { |
| 770 | if (NILP (frame)) |
| 771 | frame = selected_frame; |
| 772 | |
| 773 | CHECK_LIVE_FRAME (frame, nparam); |
| 774 | return XFRAME (frame); |
| 775 | } |
| 776 | |
| 777 | \f |
| 778 | /*********************************************************************** |
| 779 | Frames and faces |
| 780 | ***********************************************************************/ |
| 781 | |
| 782 | /* Initialize face cache and basic faces for frame F. */ |
| 783 | |
| 784 | void |
| 785 | init_frame_faces (f) |
| 786 | struct frame *f; |
| 787 | { |
| 788 | /* Make a face cache, if F doesn't have one. */ |
| 789 | if (FRAME_FACE_CACHE (f) == NULL) |
| 790 | FRAME_FACE_CACHE (f) = make_face_cache (f); |
| 791 | |
| 792 | #ifdef HAVE_WINDOW_SYSTEM |
| 793 | /* Make the image cache. */ |
| 794 | if (FRAME_WINDOW_P (f)) |
| 795 | { |
| 796 | if (FRAME_X_IMAGE_CACHE (f) == NULL) |
| 797 | FRAME_X_IMAGE_CACHE (f) = make_image_cache (); |
| 798 | ++FRAME_X_IMAGE_CACHE (f)->refcount; |
| 799 | } |
| 800 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 801 | |
| 802 | /* Realize basic faces. Must have enough information in frame |
| 803 | parameters to realize basic faces at this point. */ |
| 804 | #ifdef HAVE_X_WINDOWS |
| 805 | if (!FRAME_X_P (f) || FRAME_X_WINDOW (f)) |
| 806 | #endif |
| 807 | #ifdef WINDOWSNT |
| 808 | if (!FRAME_WINDOW_P (f) || FRAME_W32_WINDOW (f)) |
| 809 | #endif |
| 810 | if (!realize_basic_faces (f)) |
| 811 | abort (); |
| 812 | } |
| 813 | |
| 814 | |
| 815 | /* Free face cache of frame F. Called from Fdelete_frame. */ |
| 816 | |
| 817 | void |
| 818 | free_frame_faces (f) |
| 819 | struct frame *f; |
| 820 | { |
| 821 | struct face_cache *face_cache = FRAME_FACE_CACHE (f); |
| 822 | |
| 823 | if (face_cache) |
| 824 | { |
| 825 | free_face_cache (face_cache); |
| 826 | FRAME_FACE_CACHE (f) = NULL; |
| 827 | } |
| 828 | |
| 829 | #ifdef HAVE_WINDOW_SYSTEM |
| 830 | if (FRAME_WINDOW_P (f)) |
| 831 | { |
| 832 | struct image_cache *image_cache = FRAME_X_IMAGE_CACHE (f); |
| 833 | if (image_cache) |
| 834 | { |
| 835 | --image_cache->refcount; |
| 836 | if (image_cache->refcount == 0) |
| 837 | free_image_cache (f); |
| 838 | } |
| 839 | } |
| 840 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 841 | } |
| 842 | |
| 843 | |
| 844 | /* Clear face caches, and recompute basic faces for frame F. Call |
| 845 | this after changing frame parameters on which those faces depend, |
| 846 | or when realized faces have been freed due to changing attributes |
| 847 | of named faces. */ |
| 848 | |
| 849 | void |
| 850 | recompute_basic_faces (f) |
| 851 | struct frame *f; |
| 852 | { |
| 853 | if (FRAME_FACE_CACHE (f)) |
| 854 | { |
| 855 | clear_face_cache (0); |
| 856 | if (!realize_basic_faces (f)) |
| 857 | abort (); |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | |
| 862 | /* Clear the face caches of all frames. CLEAR_FONTS_P non-zero means |
| 863 | try to free unused fonts, too. */ |
| 864 | |
| 865 | void |
| 866 | clear_face_cache (clear_fonts_p) |
| 867 | int clear_fonts_p; |
| 868 | { |
| 869 | #ifdef HAVE_WINDOW_SYSTEM |
| 870 | Lisp_Object tail, frame; |
| 871 | struct frame *f; |
| 872 | |
| 873 | if (clear_fonts_p |
| 874 | || ++clear_font_table_count == CLEAR_FONT_TABLE_COUNT) |
| 875 | { |
| 876 | /* From time to time see if we can unload some fonts. This also |
| 877 | frees all realized faces on all frames. Fonts needed by |
| 878 | faces will be loaded again when faces are realized again. */ |
| 879 | clear_font_table_count = 0; |
| 880 | |
| 881 | FOR_EACH_FRAME (tail, frame) |
| 882 | { |
| 883 | f = XFRAME (frame); |
| 884 | if (FRAME_WINDOW_P (f) |
| 885 | && FRAME_X_DISPLAY_INFO (f)->n_fonts > CLEAR_FONT_TABLE_NFONTS) |
| 886 | { |
| 887 | free_all_realized_faces (frame); |
| 888 | clear_font_table (f); |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | else |
| 893 | { |
| 894 | /* Clear GCs of realized faces. */ |
| 895 | FOR_EACH_FRAME (tail, frame) |
| 896 | { |
| 897 | f = XFRAME (frame); |
| 898 | if (FRAME_WINDOW_P (f)) |
| 899 | { |
| 900 | clear_face_gcs (FRAME_FACE_CACHE (f)); |
| 901 | clear_image_cache (f, 0); |
| 902 | } |
| 903 | } |
| 904 | } |
| 905 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 906 | } |
| 907 | |
| 908 | |
| 909 | DEFUN ("clear-face-cache", Fclear_face_cache, Sclear_face_cache, 0, 1, 0, |
| 910 | "Clear face caches on all frames.\n\ |
| 911 | Optional THOROUGHLY non-nil means try to free unused fonts, too.") |
| 912 | (thorougly) |
| 913 | Lisp_Object thorougly; |
| 914 | { |
| 915 | clear_face_cache (!NILP (thorougly)); |
| 916 | return Qnil; |
| 917 | } |
| 918 | |
| 919 | |
| 920 | |
| 921 | #ifdef HAVE_WINDOW_SYSTEM |
| 922 | |
| 923 | |
| 924 | /* Remove those fonts from the font table of frame F exept for the |
| 925 | default ASCII font for the frame. Called from clear_face_cache |
| 926 | from time to time. */ |
| 927 | |
| 928 | static void |
| 929 | clear_font_table (f) |
| 930 | struct frame *f; |
| 931 | { |
| 932 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 933 | Lisp_Object rest, frame; |
| 934 | int i; |
| 935 | |
| 936 | xassert (FRAME_WINDOW_P (f)); |
| 937 | |
| 938 | /* Free those fonts that are not used by the frame F as the default. */ |
| 939 | for (i = 0; i < dpyinfo->n_fonts; ++i) |
| 940 | { |
| 941 | struct font_info *font_info = dpyinfo->font_table + i; |
| 942 | |
| 943 | if (!font_info->name |
| 944 | || font_info->font == FRAME_FONT (f)) |
| 945 | continue; |
| 946 | |
| 947 | /* Free names. */ |
| 948 | if (font_info->full_name != font_info->name) |
| 949 | xfree (font_info->full_name); |
| 950 | xfree (font_info->name); |
| 951 | |
| 952 | /* Free the font. */ |
| 953 | BLOCK_INPUT; |
| 954 | #ifdef HAVE_X_WINDOWS |
| 955 | XFreeFont (dpyinfo->display, font_info->font); |
| 956 | #endif |
| 957 | #ifdef WINDOWSNT |
| 958 | w32_unload_font (dpyinfo, font_info->font); |
| 959 | #endif |
| 960 | UNBLOCK_INPUT; |
| 961 | |
| 962 | /* Mark font table slot free. */ |
| 963 | font_info->font = NULL; |
| 964 | font_info->name = font_info->full_name = NULL; |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 969 | |
| 970 | |
| 971 | \f |
| 972 | /*********************************************************************** |
| 973 | X Pixmaps |
| 974 | ***********************************************************************/ |
| 975 | |
| 976 | #ifdef HAVE_WINDOW_SYSTEM |
| 977 | |
| 978 | DEFUN ("bitmap-spec-p", Fbitmap_spec_p, Sbitmap_spec_p, 1, 1, 0, |
| 979 | "Value is non-nil if OBJECT is a valid bitmap specification.\n\ |
| 980 | A bitmap specification is either a string, a file name, or a list\n\ |
| 981 | (WIDTH HEIGHT DATA) where WIDTH is the pixel width of the bitmap,\n\ |
| 982 | HEIGHT is its height, and DATA is a string containing the bits of\n\ |
| 983 | the pixmap. Bits are stored row by row, each row occupies\n\ |
| 984 | (WIDTH + 7)/8 bytes.") |
| 985 | (object) |
| 986 | Lisp_Object object; |
| 987 | { |
| 988 | int pixmap_p = 0; |
| 989 | |
| 990 | if (STRINGP (object)) |
| 991 | /* If OBJECT is a string, it's a file name. */ |
| 992 | pixmap_p = 1; |
| 993 | else if (CONSP (object)) |
| 994 | { |
| 995 | /* Otherwise OBJECT must be (WIDTH HEIGHT DATA), WIDTH and |
| 996 | HEIGHT must be integers > 0, and DATA must be string large |
| 997 | enough to hold a bitmap of the specified size. */ |
| 998 | Lisp_Object width, height, data; |
| 999 | |
| 1000 | height = width = data = Qnil; |
| 1001 | |
| 1002 | if (CONSP (object)) |
| 1003 | { |
| 1004 | width = XCAR (object); |
| 1005 | object = XCDR (object); |
| 1006 | if (CONSP (object)) |
| 1007 | { |
| 1008 | height = XCAR (object); |
| 1009 | object = XCDR (object); |
| 1010 | if (CONSP (object)) |
| 1011 | data = XCAR (object); |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | if (NATNUMP (width) && NATNUMP (height) && STRINGP (data)) |
| 1016 | { |
| 1017 | int bytes_per_row = ((XFASTINT (width) + BITS_PER_CHAR - 1) |
| 1018 | / BITS_PER_CHAR); |
| 1019 | if (STRING_BYTES (XSTRING (data)) >= bytes_per_row * XINT (height)) |
| 1020 | pixmap_p = 1; |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | return pixmap_p ? Qt : Qnil; |
| 1025 | } |
| 1026 | |
| 1027 | |
| 1028 | /* Load a bitmap according to NAME (which is either a file name or a |
| 1029 | pixmap spec) for use on frame F. Value is the bitmap_id (see |
| 1030 | xfns.c). If NAME is nil, return with a bitmap id of zero. If |
| 1031 | bitmap cannot be loaded, display a message saying so, and return |
| 1032 | zero. Store the bitmap width in *W_PTR and its height in *H_PTR, |
| 1033 | if these pointers are not null. */ |
| 1034 | |
| 1035 | static int |
| 1036 | load_pixmap (f, name, w_ptr, h_ptr) |
| 1037 | FRAME_PTR f; |
| 1038 | Lisp_Object name; |
| 1039 | unsigned int *w_ptr, *h_ptr; |
| 1040 | { |
| 1041 | int bitmap_id; |
| 1042 | Lisp_Object tem; |
| 1043 | |
| 1044 | if (NILP (name)) |
| 1045 | return 0; |
| 1046 | |
| 1047 | tem = Fbitmap_spec_p (name); |
| 1048 | if (NILP (tem)) |
| 1049 | wrong_type_argument (Qbitmap_spec_p, name); |
| 1050 | |
| 1051 | BLOCK_INPUT; |
| 1052 | if (CONSP (name)) |
| 1053 | { |
| 1054 | /* Decode a bitmap spec into a bitmap. */ |
| 1055 | |
| 1056 | int h, w; |
| 1057 | Lisp_Object bits; |
| 1058 | |
| 1059 | w = XINT (Fcar (name)); |
| 1060 | h = XINT (Fcar (Fcdr (name))); |
| 1061 | bits = Fcar (Fcdr (Fcdr (name))); |
| 1062 | |
| 1063 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, |
| 1064 | w, h); |
| 1065 | } |
| 1066 | else |
| 1067 | { |
| 1068 | /* It must be a string -- a file name. */ |
| 1069 | bitmap_id = x_create_bitmap_from_file (f, name); |
| 1070 | } |
| 1071 | UNBLOCK_INPUT; |
| 1072 | |
| 1073 | if (bitmap_id < 0) |
| 1074 | { |
| 1075 | add_to_log ("Invalid or undefined bitmap %s", name, Qnil); |
| 1076 | bitmap_id = 0; |
| 1077 | |
| 1078 | if (w_ptr) |
| 1079 | *w_ptr = 0; |
| 1080 | if (h_ptr) |
| 1081 | *h_ptr = 0; |
| 1082 | } |
| 1083 | else |
| 1084 | { |
| 1085 | #if GLYPH_DEBUG |
| 1086 | ++npixmaps_allocated; |
| 1087 | #endif |
| 1088 | if (w_ptr) |
| 1089 | *w_ptr = x_bitmap_width (f, bitmap_id); |
| 1090 | |
| 1091 | if (h_ptr) |
| 1092 | *h_ptr = x_bitmap_height (f, bitmap_id); |
| 1093 | } |
| 1094 | |
| 1095 | return bitmap_id; |
| 1096 | } |
| 1097 | |
| 1098 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 1099 | |
| 1100 | |
| 1101 | \f |
| 1102 | /*********************************************************************** |
| 1103 | Minimum font bounds |
| 1104 | ***********************************************************************/ |
| 1105 | |
| 1106 | #ifdef HAVE_WINDOW_SYSTEM |
| 1107 | |
| 1108 | /* Update the line_height of frame F. Return non-zero if line height |
| 1109 | changes. */ |
| 1110 | |
| 1111 | int |
| 1112 | frame_update_line_height (f) |
| 1113 | struct frame *f; |
| 1114 | { |
| 1115 | int line_height, changed_p; |
| 1116 | |
| 1117 | line_height = FONT_HEIGHT (FRAME_FONT (f)); |
| 1118 | changed_p = line_height != FRAME_LINE_HEIGHT (f); |
| 1119 | FRAME_LINE_HEIGHT (f) = line_height; |
| 1120 | return changed_p; |
| 1121 | } |
| 1122 | |
| 1123 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 1124 | |
| 1125 | \f |
| 1126 | /*********************************************************************** |
| 1127 | Fonts |
| 1128 | ***********************************************************************/ |
| 1129 | |
| 1130 | #ifdef HAVE_WINDOW_SYSTEM |
| 1131 | |
| 1132 | /* Load font of face FACE which is used on frame F to display |
| 1133 | character C. The name of the font to load is determined by lface |
| 1134 | and fontset of FACE. */ |
| 1135 | |
| 1136 | static void |
| 1137 | load_face_font (f, face, c) |
| 1138 | struct frame *f; |
| 1139 | struct face *face; |
| 1140 | int c; |
| 1141 | { |
| 1142 | struct font_info *font_info = NULL; |
| 1143 | char *font_name; |
| 1144 | |
| 1145 | face->font_info_id = -1; |
| 1146 | face->font = NULL; |
| 1147 | |
| 1148 | font_name = choose_face_font (f, face->lface, face->fontset, c); |
| 1149 | if (!font_name) |
| 1150 | return; |
| 1151 | |
| 1152 | BLOCK_INPUT; |
| 1153 | font_info = FS_LOAD_FACE_FONT (f, c, font_name, face); |
| 1154 | UNBLOCK_INPUT; |
| 1155 | |
| 1156 | if (font_info) |
| 1157 | { |
| 1158 | face->font_info_id = font_info->font_idx; |
| 1159 | face->font = font_info->font; |
| 1160 | face->font_name = font_info->full_name; |
| 1161 | if (face->gc) |
| 1162 | { |
| 1163 | x_free_gc (f, face->gc); |
| 1164 | face->gc = 0; |
| 1165 | } |
| 1166 | } |
| 1167 | else |
| 1168 | add_to_log ("Unable to load font %s", |
| 1169 | build_string (font_name), Qnil); |
| 1170 | xfree (font_name); |
| 1171 | } |
| 1172 | |
| 1173 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 1174 | |
| 1175 | |
| 1176 | \f |
| 1177 | /*********************************************************************** |
| 1178 | X Colors |
| 1179 | ***********************************************************************/ |
| 1180 | |
| 1181 | /* A version of defined_color for non-X frames. */ |
| 1182 | int |
| 1183 | tty_defined_color (f, color_name, color_def, alloc) |
| 1184 | struct frame *f; |
| 1185 | char *color_name; |
| 1186 | XColor *color_def; |
| 1187 | int alloc; |
| 1188 | { |
| 1189 | Lisp_Object color_desc; |
| 1190 | unsigned long color_idx = FACE_TTY_DEFAULT_COLOR, |
| 1191 | red = 0, green = 0, blue = 0; |
| 1192 | int status = 1; |
| 1193 | |
| 1194 | if (*color_name && !NILP (Ffboundp (Qtty_color_desc))) |
| 1195 | { |
| 1196 | Lisp_Object frame; |
| 1197 | |
| 1198 | XSETFRAME (frame, f); |
| 1199 | status = 0; |
| 1200 | color_desc = call2 (Qtty_color_desc, build_string (color_name), frame); |
| 1201 | if (CONSP (color_desc) && CONSP (XCDR (color_desc))) |
| 1202 | { |
| 1203 | color_idx = XINT (XCAR (XCDR (color_desc))); |
| 1204 | if (CONSP (XCDR (XCDR (color_desc)))) |
| 1205 | { |
| 1206 | red = XINT (XCAR (XCDR (XCDR (color_desc)))); |
| 1207 | green = XINT (XCAR (XCDR (XCDR (XCDR (color_desc))))); |
| 1208 | blue = XINT (XCAR (XCDR (XCDR (XCDR (XCDR (color_desc)))))); |
| 1209 | } |
| 1210 | status = 1; |
| 1211 | } |
| 1212 | else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist")))) |
| 1213 | /* We were called early during startup, and the colors are not |
| 1214 | yet set up in tty-defined-color-alist. Don't return a failure |
| 1215 | indication, since this produces the annoying "Unable to |
| 1216 | load color" messages in the *Messages* buffer. */ |
| 1217 | status = 1; |
| 1218 | } |
| 1219 | if (color_idx == FACE_TTY_DEFAULT_COLOR && *color_name) |
| 1220 | { |
| 1221 | if (strcmp (color_name, "unspecified-fg") == 0) |
| 1222 | color_idx = FACE_TTY_DEFAULT_FG_COLOR; |
| 1223 | else if (strcmp (color_name, "unspecified-bg") == 0) |
| 1224 | color_idx = FACE_TTY_DEFAULT_BG_COLOR; |
| 1225 | } |
| 1226 | |
| 1227 | if (color_idx != FACE_TTY_DEFAULT_COLOR) |
| 1228 | status = 1; |
| 1229 | |
| 1230 | color_def->pixel = color_idx; |
| 1231 | color_def->red = red; |
| 1232 | color_def->green = green; |
| 1233 | color_def->blue = blue; |
| 1234 | |
| 1235 | return status; |
| 1236 | } |
| 1237 | |
| 1238 | /* Decide if color named COLOR is valid for the display associated |
| 1239 | with the frame F; if so, return the rgb values in COLOR_DEF. If |
| 1240 | ALLOC is nonzero, allocate a new colormap cell. |
| 1241 | |
| 1242 | This does the right thing for any type of frame. */ |
| 1243 | int |
| 1244 | defined_color (f, color_name, color_def, alloc) |
| 1245 | struct frame *f; |
| 1246 | char *color_name; |
| 1247 | XColor *color_def; |
| 1248 | int alloc; |
| 1249 | { |
| 1250 | if (!FRAME_WINDOW_P (f)) |
| 1251 | return tty_defined_color (f, color_name, color_def, alloc); |
| 1252 | #ifdef HAVE_X_WINDOWS |
| 1253 | else if (FRAME_X_P (f)) |
| 1254 | return x_defined_color (f, color_name, color_def, alloc); |
| 1255 | #endif |
| 1256 | #ifdef WINDOWSNT |
| 1257 | else if (FRAME_W32_P (f)) |
| 1258 | return w32_defined_color (f, color_name, color_def, alloc); |
| 1259 | #endif |
| 1260 | #ifdef macintosh |
| 1261 | else if (FRAME_MAC_P (f)) |
| 1262 | /* FIXME: mac_defined_color doesn't exist! */ |
| 1263 | return mac_defined_color (f, color_name, color_def, alloc); |
| 1264 | #endif |
| 1265 | else |
| 1266 | abort (); |
| 1267 | } |
| 1268 | |
| 1269 | /* Given the index of the tty color, return its name, a Lisp string. */ |
| 1270 | |
| 1271 | Lisp_Object |
| 1272 | tty_color_name (f, idx) |
| 1273 | struct frame *f; |
| 1274 | int idx; |
| 1275 | { |
| 1276 | char *color; |
| 1277 | |
| 1278 | if (idx >= 0 && !NILP (Ffboundp (Qtty_color_by_index))) |
| 1279 | { |
| 1280 | Lisp_Object frame; |
| 1281 | Lisp_Object coldesc; |
| 1282 | |
| 1283 | XSETFRAME (frame, f); |
| 1284 | coldesc = call2 (Qtty_color_by_index, make_number (idx), frame); |
| 1285 | |
| 1286 | if (!NILP (coldesc)) |
| 1287 | return XCAR (coldesc); |
| 1288 | } |
| 1289 | #ifdef MSDOS |
| 1290 | /* We can have an MSDOG frame under -nw for a short window of |
| 1291 | opportunity before internal_terminal_init is called. DTRT. */ |
| 1292 | if (FRAME_MSDOS_P (f) && !inhibit_window_system) |
| 1293 | return msdos_stdcolor_name (idx); |
| 1294 | #endif |
| 1295 | |
| 1296 | if (idx == FACE_TTY_DEFAULT_FG_COLOR) |
| 1297 | return build_string (unspecified_fg); |
| 1298 | if (idx == FACE_TTY_DEFAULT_BG_COLOR) |
| 1299 | return build_string (unspecified_bg); |
| 1300 | |
| 1301 | #ifdef WINDOWSNT |
| 1302 | return vga_stdcolor_name (idx); |
| 1303 | #endif |
| 1304 | |
| 1305 | return Qunspecified; |
| 1306 | } |
| 1307 | |
| 1308 | /* Return non-zero if COLOR_NAME is a shade of gray (or white or |
| 1309 | black) on frame F. The algorithm is taken from 20.2 faces.el. */ |
| 1310 | |
| 1311 | static int |
| 1312 | face_color_gray_p (f, color_name) |
| 1313 | struct frame *f; |
| 1314 | char *color_name; |
| 1315 | { |
| 1316 | XColor color; |
| 1317 | int gray_p; |
| 1318 | |
| 1319 | if (defined_color (f, color_name, &color, 0)) |
| 1320 | gray_p = ((abs (color.red - color.green) |
| 1321 | < max (color.red, color.green) / 20) |
| 1322 | && (abs (color.green - color.blue) |
| 1323 | < max (color.green, color.blue) / 20) |
| 1324 | && (abs (color.blue - color.red) |
| 1325 | < max (color.blue, color.red) / 20)); |
| 1326 | else |
| 1327 | gray_p = 0; |
| 1328 | |
| 1329 | return gray_p; |
| 1330 | } |
| 1331 | |
| 1332 | |
| 1333 | /* Return non-zero if color COLOR_NAME can be displayed on frame F. |
| 1334 | BACKGROUND_P non-zero means the color will be used as background |
| 1335 | color. */ |
| 1336 | |
| 1337 | static int |
| 1338 | face_color_supported_p (f, color_name, background_p) |
| 1339 | struct frame *f; |
| 1340 | char *color_name; |
| 1341 | int background_p; |
| 1342 | { |
| 1343 | Lisp_Object frame; |
| 1344 | XColor not_used; |
| 1345 | |
| 1346 | XSETFRAME (frame, f); |
| 1347 | return (FRAME_WINDOW_P (f) |
| 1348 | ? (!NILP (Fxw_display_color_p (frame)) |
| 1349 | || xstricmp (color_name, "black") == 0 |
| 1350 | || xstricmp (color_name, "white") == 0 |
| 1351 | || (background_p |
| 1352 | && face_color_gray_p (f, color_name)) |
| 1353 | || (!NILP (Fx_display_grayscale_p (frame)) |
| 1354 | && face_color_gray_p (f, color_name))) |
| 1355 | : tty_defined_color (f, color_name, ¬_used, 0)); |
| 1356 | } |
| 1357 | |
| 1358 | |
| 1359 | DEFUN ("color-gray-p", Fcolor_gray_p, Scolor_gray_p, 1, 2, 0, |
| 1360 | "Return non-nil if COLOR is a shade of gray (or white or black).\n\ |
| 1361 | FRAME specifies the frame and thus the display for interpreting COLOR.\n\ |
| 1362 | If FRAME is nil or omitted, use the selected frame.") |
| 1363 | (color, frame) |
| 1364 | Lisp_Object color, frame; |
| 1365 | { |
| 1366 | struct frame *f; |
| 1367 | |
| 1368 | CHECK_FRAME (frame, 0); |
| 1369 | CHECK_STRING (color, 0); |
| 1370 | f = XFRAME (frame); |
| 1371 | return face_color_gray_p (f, XSTRING (color)->data) ? Qt : Qnil; |
| 1372 | } |
| 1373 | |
| 1374 | |
| 1375 | DEFUN ("color-supported-p", Fcolor_supported_p, |
| 1376 | Scolor_supported_p, 2, 3, 0, |
| 1377 | "Return non-nil if COLOR can be displayed on FRAME.\n\ |
| 1378 | BACKGROUND-P non-nil means COLOR is used as a background.\n\ |
| 1379 | If FRAME is nil or omitted, use the selected frame.\n\ |
| 1380 | COLOR must be a valid color name.") |
| 1381 | (color, frame, background_p) |
| 1382 | Lisp_Object frame, color, background_p; |
| 1383 | { |
| 1384 | struct frame *f; |
| 1385 | |
| 1386 | CHECK_FRAME (frame, 0); |
| 1387 | CHECK_STRING (color, 0); |
| 1388 | f = XFRAME (frame); |
| 1389 | if (face_color_supported_p (f, XSTRING (color)->data, !NILP (background_p))) |
| 1390 | return Qt; |
| 1391 | return Qnil; |
| 1392 | } |
| 1393 | |
| 1394 | /* Load color with name NAME for use by face FACE on frame F. |
| 1395 | TARGET_INDEX must be one of LFACE_FOREGROUND_INDEX, |
| 1396 | LFACE_BACKGROUND_INDEX, LFACE_UNDERLINE_INDEX, LFACE_OVERLINE_INDEX, |
| 1397 | LFACE_STRIKE_THROUGH_INDEX, or LFACE_BOX_INDEX. Value is the |
| 1398 | pixel color. If color cannot be loaded, display a message, and |
| 1399 | return the foreground, background or underline color of F, but |
| 1400 | record that fact in flags of the face so that we don't try to free |
| 1401 | these colors. */ |
| 1402 | |
| 1403 | unsigned long |
| 1404 | load_color (f, face, name, target_index) |
| 1405 | struct frame *f; |
| 1406 | struct face *face; |
| 1407 | Lisp_Object name; |
| 1408 | enum lface_attribute_index target_index; |
| 1409 | { |
| 1410 | XColor color; |
| 1411 | |
| 1412 | xassert (STRINGP (name)); |
| 1413 | xassert (target_index == LFACE_FOREGROUND_INDEX |
| 1414 | || target_index == LFACE_BACKGROUND_INDEX |
| 1415 | || target_index == LFACE_UNDERLINE_INDEX |
| 1416 | || target_index == LFACE_OVERLINE_INDEX |
| 1417 | || target_index == LFACE_STRIKE_THROUGH_INDEX |
| 1418 | || target_index == LFACE_BOX_INDEX); |
| 1419 | |
| 1420 | /* if the color map is full, defined_color will return a best match |
| 1421 | to the values in an existing cell. */ |
| 1422 | if (!defined_color (f, XSTRING (name)->data, &color, 1)) |
| 1423 | { |
| 1424 | add_to_log ("Unable to load color \"%s\"", name, Qnil); |
| 1425 | |
| 1426 | switch (target_index) |
| 1427 | { |
| 1428 | case LFACE_FOREGROUND_INDEX: |
| 1429 | face->foreground_defaulted_p = 1; |
| 1430 | color.pixel = FRAME_FOREGROUND_PIXEL (f); |
| 1431 | break; |
| 1432 | |
| 1433 | case LFACE_BACKGROUND_INDEX: |
| 1434 | face->background_defaulted_p = 1; |
| 1435 | color.pixel = FRAME_BACKGROUND_PIXEL (f); |
| 1436 | break; |
| 1437 | |
| 1438 | case LFACE_UNDERLINE_INDEX: |
| 1439 | face->underline_defaulted_p = 1; |
| 1440 | color.pixel = FRAME_FOREGROUND_PIXEL (f); |
| 1441 | break; |
| 1442 | |
| 1443 | case LFACE_OVERLINE_INDEX: |
| 1444 | face->overline_color_defaulted_p = 1; |
| 1445 | color.pixel = FRAME_FOREGROUND_PIXEL (f); |
| 1446 | break; |
| 1447 | |
| 1448 | case LFACE_STRIKE_THROUGH_INDEX: |
| 1449 | face->strike_through_color_defaulted_p = 1; |
| 1450 | color.pixel = FRAME_FOREGROUND_PIXEL (f); |
| 1451 | break; |
| 1452 | |
| 1453 | case LFACE_BOX_INDEX: |
| 1454 | face->box_color_defaulted_p = 1; |
| 1455 | color.pixel = FRAME_FOREGROUND_PIXEL (f); |
| 1456 | break; |
| 1457 | |
| 1458 | default: |
| 1459 | abort (); |
| 1460 | } |
| 1461 | } |
| 1462 | #if GLYPH_DEBUG |
| 1463 | else |
| 1464 | ++ncolors_allocated; |
| 1465 | #endif |
| 1466 | |
| 1467 | return color.pixel; |
| 1468 | } |
| 1469 | |
| 1470 | #ifdef HAVE_WINDOW_SYSTEM |
| 1471 | |
| 1472 | /* Load colors for face FACE which is used on frame F. Colors are |
| 1473 | specified by slots LFACE_BACKGROUND_INDEX and LFACE_FOREGROUND_INDEX |
| 1474 | of ATTRS. If the background color specified is not supported on F, |
| 1475 | try to emulate gray colors with a stipple from Vface_default_stipple. */ |
| 1476 | |
| 1477 | static void |
| 1478 | load_face_colors (f, face, attrs) |
| 1479 | struct frame *f; |
| 1480 | struct face *face; |
| 1481 | Lisp_Object *attrs; |
| 1482 | { |
| 1483 | Lisp_Object fg, bg; |
| 1484 | |
| 1485 | bg = attrs[LFACE_BACKGROUND_INDEX]; |
| 1486 | fg = attrs[LFACE_FOREGROUND_INDEX]; |
| 1487 | |
| 1488 | /* Swap colors if face is inverse-video. */ |
| 1489 | if (EQ (attrs[LFACE_INVERSE_INDEX], Qt)) |
| 1490 | { |
| 1491 | Lisp_Object tmp; |
| 1492 | tmp = fg; |
| 1493 | fg = bg; |
| 1494 | bg = tmp; |
| 1495 | } |
| 1496 | |
| 1497 | /* Check for support for foreground, not for background because |
| 1498 | face_color_supported_p is smart enough to know that grays are |
| 1499 | "supported" as background because we are supposed to use stipple |
| 1500 | for them. */ |
| 1501 | if (!face_color_supported_p (f, XSTRING (bg)->data, 0) |
| 1502 | && !NILP (Fbitmap_spec_p (Vface_default_stipple))) |
| 1503 | { |
| 1504 | x_destroy_bitmap (f, face->stipple); |
| 1505 | face->stipple = load_pixmap (f, Vface_default_stipple, |
| 1506 | &face->pixmap_w, &face->pixmap_h); |
| 1507 | } |
| 1508 | |
| 1509 | face->background = load_color (f, face, bg, LFACE_BACKGROUND_INDEX); |
| 1510 | face->foreground = load_color (f, face, fg, LFACE_FOREGROUND_INDEX); |
| 1511 | } |
| 1512 | |
| 1513 | |
| 1514 | /* Free color PIXEL on frame F. */ |
| 1515 | |
| 1516 | void |
| 1517 | unload_color (f, pixel) |
| 1518 | struct frame *f; |
| 1519 | unsigned long pixel; |
| 1520 | { |
| 1521 | #ifdef HAVE_X_WINDOWS |
| 1522 | BLOCK_INPUT; |
| 1523 | x_free_colors (f, &pixel, 1); |
| 1524 | UNBLOCK_INPUT; |
| 1525 | #endif |
| 1526 | } |
| 1527 | |
| 1528 | |
| 1529 | /* Free colors allocated for FACE. */ |
| 1530 | |
| 1531 | static void |
| 1532 | free_face_colors (f, face) |
| 1533 | struct frame *f; |
| 1534 | struct face *face; |
| 1535 | { |
| 1536 | #ifdef HAVE_X_WINDOWS |
| 1537 | int class = FRAME_X_DISPLAY_INFO (f)->visual->class; |
| 1538 | |
| 1539 | /* If display has an immutable color map, freeing colors is not |
| 1540 | necessary and some servers don't allow it. So don't do it. */ |
| 1541 | if (class != StaticColor |
| 1542 | && class != StaticGray |
| 1543 | && class != TrueColor) |
| 1544 | { |
| 1545 | BLOCK_INPUT; |
| 1546 | |
| 1547 | if (!face->foreground_defaulted_p) |
| 1548 | { |
| 1549 | x_free_colors (f, &face->foreground, 1); |
| 1550 | IF_DEBUG (--ncolors_allocated); |
| 1551 | } |
| 1552 | |
| 1553 | if (!face->background_defaulted_p) |
| 1554 | { |
| 1555 | x_free_colors (f, &face->background, 1); |
| 1556 | IF_DEBUG (--ncolors_allocated); |
| 1557 | } |
| 1558 | |
| 1559 | if (face->underline_p |
| 1560 | && !face->underline_defaulted_p) |
| 1561 | { |
| 1562 | x_free_colors (f, &face->underline_color, 1); |
| 1563 | IF_DEBUG (--ncolors_allocated); |
| 1564 | } |
| 1565 | |
| 1566 | if (face->overline_p |
| 1567 | && !face->overline_color_defaulted_p) |
| 1568 | { |
| 1569 | x_free_colors (f, &face->overline_color, 1); |
| 1570 | IF_DEBUG (--ncolors_allocated); |
| 1571 | } |
| 1572 | |
| 1573 | if (face->strike_through_p |
| 1574 | && !face->strike_through_color_defaulted_p) |
| 1575 | { |
| 1576 | x_free_colors (f, &face->strike_through_color, 1); |
| 1577 | IF_DEBUG (--ncolors_allocated); |
| 1578 | } |
| 1579 | |
| 1580 | if (face->box != FACE_NO_BOX |
| 1581 | && !face->box_color_defaulted_p) |
| 1582 | { |
| 1583 | x_free_colors (f, &face->box_color, 1); |
| 1584 | IF_DEBUG (--ncolors_allocated); |
| 1585 | } |
| 1586 | |
| 1587 | UNBLOCK_INPUT; |
| 1588 | } |
| 1589 | #endif /* HAVE_X_WINDOWS */ |
| 1590 | } |
| 1591 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 1592 | |
| 1593 | |
| 1594 | \f |
| 1595 | /*********************************************************************** |
| 1596 | XLFD Font Names |
| 1597 | ***********************************************************************/ |
| 1598 | |
| 1599 | /* An enumerator for each field of an XLFD font name. */ |
| 1600 | |
| 1601 | enum xlfd_field |
| 1602 | { |
| 1603 | XLFD_FOUNDRY, |
| 1604 | XLFD_FAMILY, |
| 1605 | XLFD_WEIGHT, |
| 1606 | XLFD_SLANT, |
| 1607 | XLFD_SWIDTH, |
| 1608 | XLFD_ADSTYLE, |
| 1609 | XLFD_PIXEL_SIZE, |
| 1610 | XLFD_POINT_SIZE, |
| 1611 | XLFD_RESX, |
| 1612 | XLFD_RESY, |
| 1613 | XLFD_SPACING, |
| 1614 | XLFD_AVGWIDTH, |
| 1615 | XLFD_REGISTRY, |
| 1616 | XLFD_ENCODING, |
| 1617 | XLFD_LAST |
| 1618 | }; |
| 1619 | |
| 1620 | /* An enumerator for each possible slant value of a font. Taken from |
| 1621 | the XLFD specification. */ |
| 1622 | |
| 1623 | enum xlfd_slant |
| 1624 | { |
| 1625 | XLFD_SLANT_UNKNOWN, |
| 1626 | XLFD_SLANT_ROMAN, |
| 1627 | XLFD_SLANT_ITALIC, |
| 1628 | XLFD_SLANT_OBLIQUE, |
| 1629 | XLFD_SLANT_REVERSE_ITALIC, |
| 1630 | XLFD_SLANT_REVERSE_OBLIQUE, |
| 1631 | XLFD_SLANT_OTHER |
| 1632 | }; |
| 1633 | |
| 1634 | /* Relative font weight according to XLFD documentation. */ |
| 1635 | |
| 1636 | enum xlfd_weight |
| 1637 | { |
| 1638 | XLFD_WEIGHT_UNKNOWN, |
| 1639 | XLFD_WEIGHT_ULTRA_LIGHT, /* 10 */ |
| 1640 | XLFD_WEIGHT_EXTRA_LIGHT, /* 20 */ |
| 1641 | XLFD_WEIGHT_LIGHT, /* 30 */ |
| 1642 | XLFD_WEIGHT_SEMI_LIGHT, /* 40: SemiLight, Book, ... */ |
| 1643 | XLFD_WEIGHT_MEDIUM, /* 50: Medium, Normal, Regular, ... */ |
| 1644 | XLFD_WEIGHT_SEMI_BOLD, /* 60: SemiBold, DemiBold, ... */ |
| 1645 | XLFD_WEIGHT_BOLD, /* 70: Bold, ... */ |
| 1646 | XLFD_WEIGHT_EXTRA_BOLD, /* 80: ExtraBold, Heavy, ... */ |
| 1647 | XLFD_WEIGHT_ULTRA_BOLD /* 90: UltraBold, Black, ... */ |
| 1648 | }; |
| 1649 | |
| 1650 | /* Relative proportionate width. */ |
| 1651 | |
| 1652 | enum xlfd_swidth |
| 1653 | { |
| 1654 | XLFD_SWIDTH_UNKNOWN, |
| 1655 | XLFD_SWIDTH_ULTRA_CONDENSED, /* 10 */ |
| 1656 | XLFD_SWIDTH_EXTRA_CONDENSED, /* 20 */ |
| 1657 | XLFD_SWIDTH_CONDENSED, /* 30: Condensed, Narrow, Compressed, ... */ |
| 1658 | XLFD_SWIDTH_SEMI_CONDENSED, /* 40: semicondensed */ |
| 1659 | XLFD_SWIDTH_MEDIUM, /* 50: Medium, Normal, Regular, ... */ |
| 1660 | XLFD_SWIDTH_SEMI_EXPANDED, /* 60: SemiExpanded, DemiExpanded, ... */ |
| 1661 | XLFD_SWIDTH_EXPANDED, /* 70: Expanded... */ |
| 1662 | XLFD_SWIDTH_EXTRA_EXPANDED, /* 80: ExtraExpanded, Wide... */ |
| 1663 | XLFD_SWIDTH_ULTRA_EXPANDED /* 90: UltraExpanded... */ |
| 1664 | }; |
| 1665 | |
| 1666 | /* Structure used for tables mapping XLFD weight, slant, and width |
| 1667 | names to numeric and symbolic values. */ |
| 1668 | |
| 1669 | struct table_entry |
| 1670 | { |
| 1671 | char *name; |
| 1672 | int numeric; |
| 1673 | Lisp_Object *symbol; |
| 1674 | }; |
| 1675 | |
| 1676 | /* Table of XLFD slant names and their numeric and symbolic |
| 1677 | representations. This table must be sorted by slant names in |
| 1678 | ascending order. */ |
| 1679 | |
| 1680 | static struct table_entry slant_table[] = |
| 1681 | { |
| 1682 | {"i", XLFD_SLANT_ITALIC, &Qitalic}, |
| 1683 | {"o", XLFD_SLANT_OBLIQUE, &Qoblique}, |
| 1684 | {"ot", XLFD_SLANT_OTHER, &Qitalic}, |
| 1685 | {"r", XLFD_SLANT_ROMAN, &Qnormal}, |
| 1686 | {"ri", XLFD_SLANT_REVERSE_ITALIC, &Qreverse_italic}, |
| 1687 | {"ro", XLFD_SLANT_REVERSE_OBLIQUE, &Qreverse_oblique} |
| 1688 | }; |
| 1689 | |
| 1690 | /* Table of XLFD weight names. This table must be sorted by weight |
| 1691 | names in ascending order. */ |
| 1692 | |
| 1693 | static struct table_entry weight_table[] = |
| 1694 | { |
| 1695 | {"black", XLFD_WEIGHT_ULTRA_BOLD, &Qultra_bold}, |
| 1696 | {"bold", XLFD_WEIGHT_BOLD, &Qbold}, |
| 1697 | {"book", XLFD_WEIGHT_SEMI_LIGHT, &Qsemi_light}, |
| 1698 | {"demibold", XLFD_WEIGHT_SEMI_BOLD, &Qsemi_bold}, |
| 1699 | {"extralight", XLFD_WEIGHT_EXTRA_LIGHT, &Qextra_light}, |
| 1700 | {"extrabold", XLFD_WEIGHT_EXTRA_BOLD, &Qextra_bold}, |
| 1701 | {"heavy", XLFD_WEIGHT_EXTRA_BOLD, &Qextra_bold}, |
| 1702 | {"light", XLFD_WEIGHT_LIGHT, &Qlight}, |
| 1703 | {"medium", XLFD_WEIGHT_MEDIUM, &Qnormal}, |
| 1704 | {"normal", XLFD_WEIGHT_MEDIUM, &Qnormal}, |
| 1705 | {"regular", XLFD_WEIGHT_MEDIUM, &Qnormal}, |
| 1706 | {"semibold", XLFD_WEIGHT_SEMI_BOLD, &Qsemi_bold}, |
| 1707 | {"semilight", XLFD_WEIGHT_SEMI_LIGHT, &Qsemi_light}, |
| 1708 | {"ultralight", XLFD_WEIGHT_ULTRA_LIGHT, &Qultra_light}, |
| 1709 | {"ultrabold", XLFD_WEIGHT_ULTRA_BOLD, &Qultra_bold} |
| 1710 | }; |
| 1711 | |
| 1712 | /* Table of XLFD width names. This table must be sorted by width |
| 1713 | names in ascending order. */ |
| 1714 | |
| 1715 | static struct table_entry swidth_table[] = |
| 1716 | { |
| 1717 | {"compressed", XLFD_SWIDTH_CONDENSED, &Qcondensed}, |
| 1718 | {"condensed", XLFD_SWIDTH_CONDENSED, &Qcondensed}, |
| 1719 | {"demiexpanded", XLFD_SWIDTH_SEMI_EXPANDED, &Qsemi_expanded}, |
| 1720 | {"expanded", XLFD_SWIDTH_EXPANDED, &Qexpanded}, |
| 1721 | {"extracondensed", XLFD_SWIDTH_EXTRA_CONDENSED, &Qextra_condensed}, |
| 1722 | {"extraexpanded", XLFD_SWIDTH_EXTRA_EXPANDED, &Qextra_expanded}, |
| 1723 | {"medium", XLFD_SWIDTH_MEDIUM, &Qnormal}, |
| 1724 | {"narrow", XLFD_SWIDTH_CONDENSED, &Qcondensed}, |
| 1725 | {"normal", XLFD_SWIDTH_MEDIUM, &Qnormal}, |
| 1726 | {"regular", XLFD_SWIDTH_MEDIUM, &Qnormal}, |
| 1727 | {"semicondensed", XLFD_SWIDTH_SEMI_CONDENSED, &Qsemi_condensed}, |
| 1728 | {"semiexpanded", XLFD_SWIDTH_SEMI_EXPANDED, &Qsemi_expanded}, |
| 1729 | {"ultracondensed", XLFD_SWIDTH_ULTRA_CONDENSED, &Qultra_condensed}, |
| 1730 | {"ultraexpanded", XLFD_SWIDTH_ULTRA_EXPANDED, &Qultra_expanded}, |
| 1731 | {"wide", XLFD_SWIDTH_EXTRA_EXPANDED, &Qextra_expanded} |
| 1732 | }; |
| 1733 | |
| 1734 | /* Structure used to hold the result of splitting font names in XLFD |
| 1735 | format into their fields. */ |
| 1736 | |
| 1737 | struct font_name |
| 1738 | { |
| 1739 | /* The original name which is modified destructively by |
| 1740 | split_font_name. The pointer is kept here to be able to free it |
| 1741 | if it was allocated from the heap. */ |
| 1742 | char *name; |
| 1743 | |
| 1744 | /* Font name fields. Each vector element points into `name' above. |
| 1745 | Fields are NUL-terminated. */ |
| 1746 | char *fields[XLFD_LAST]; |
| 1747 | |
| 1748 | /* Numeric values for those fields that interest us. See |
| 1749 | split_font_name for which these are. */ |
| 1750 | int numeric[XLFD_LAST]; |
| 1751 | }; |
| 1752 | |
| 1753 | /* The frame in effect when sorting font names. Set temporarily in |
| 1754 | sort_fonts so that it is available in font comparison functions. */ |
| 1755 | |
| 1756 | static struct frame *font_frame; |
| 1757 | |
| 1758 | /* Order by which font selection chooses fonts. The default values |
| 1759 | mean `first, find a best match for the font width, then for the |
| 1760 | font height, then for weight, then for slant.' This variable can be |
| 1761 | set via set-face-font-sort-order. */ |
| 1762 | |
| 1763 | static int font_sort_order[4]; |
| 1764 | |
| 1765 | |
| 1766 | /* Look up FONT.fields[FIELD_INDEX] in TABLE which has DIM entries. |
| 1767 | TABLE must be sorted by TABLE[i]->name in ascending order. Value |
| 1768 | is a pointer to the matching table entry or null if no table entry |
| 1769 | matches. */ |
| 1770 | |
| 1771 | static struct table_entry * |
| 1772 | xlfd_lookup_field_contents (table, dim, font, field_index) |
| 1773 | struct table_entry *table; |
| 1774 | int dim; |
| 1775 | struct font_name *font; |
| 1776 | int field_index; |
| 1777 | { |
| 1778 | /* Function split_font_name converts fields to lower-case, so there |
| 1779 | is no need to use xstrlwr or xstricmp here. */ |
| 1780 | char *s = font->fields[field_index]; |
| 1781 | int low, mid, high, cmp; |
| 1782 | |
| 1783 | low = 0; |
| 1784 | high = dim - 1; |
| 1785 | |
| 1786 | while (low <= high) |
| 1787 | { |
| 1788 | mid = (low + high) / 2; |
| 1789 | cmp = strcmp (table[mid].name, s); |
| 1790 | |
| 1791 | if (cmp < 0) |
| 1792 | low = mid + 1; |
| 1793 | else if (cmp > 0) |
| 1794 | high = mid - 1; |
| 1795 | else |
| 1796 | return table + mid; |
| 1797 | } |
| 1798 | |
| 1799 | return NULL; |
| 1800 | } |
| 1801 | |
| 1802 | |
| 1803 | /* Return a numeric representation for font name field |
| 1804 | FONT.fields[FIELD_INDEX]. The field is looked up in TABLE which |
| 1805 | has DIM entries. Value is the numeric value found or DFLT if no |
| 1806 | table entry matches. This function is used to translate weight, |
| 1807 | slant, and swidth names of XLFD font names to numeric values. */ |
| 1808 | |
| 1809 | static INLINE int |
| 1810 | xlfd_numeric_value (table, dim, font, field_index, dflt) |
| 1811 | struct table_entry *table; |
| 1812 | int dim; |
| 1813 | struct font_name *font; |
| 1814 | int field_index; |
| 1815 | int dflt; |
| 1816 | { |
| 1817 | struct table_entry *p; |
| 1818 | p = xlfd_lookup_field_contents (table, dim, font, field_index); |
| 1819 | return p ? p->numeric : dflt; |
| 1820 | } |
| 1821 | |
| 1822 | |
| 1823 | /* Return a symbolic representation for font name field |
| 1824 | FONT.fields[FIELD_INDEX]. The field is looked up in TABLE which |
| 1825 | has DIM entries. Value is the symbolic value found or DFLT if no |
| 1826 | table entry matches. This function is used to translate weight, |
| 1827 | slant, and swidth names of XLFD font names to symbols. */ |
| 1828 | |
| 1829 | static INLINE Lisp_Object |
| 1830 | xlfd_symbolic_value (table, dim, font, field_index, dflt) |
| 1831 | struct table_entry *table; |
| 1832 | int dim; |
| 1833 | struct font_name *font; |
| 1834 | int field_index; |
| 1835 | Lisp_Object dflt; |
| 1836 | { |
| 1837 | struct table_entry *p; |
| 1838 | p = xlfd_lookup_field_contents (table, dim, font, field_index); |
| 1839 | return p ? *p->symbol : dflt; |
| 1840 | } |
| 1841 | |
| 1842 | |
| 1843 | /* Return a numeric value for the slant of the font given by FONT. */ |
| 1844 | |
| 1845 | static INLINE int |
| 1846 | xlfd_numeric_slant (font) |
| 1847 | struct font_name *font; |
| 1848 | { |
| 1849 | return xlfd_numeric_value (slant_table, DIM (slant_table), |
| 1850 | font, XLFD_SLANT, XLFD_SLANT_ROMAN); |
| 1851 | } |
| 1852 | |
| 1853 | |
| 1854 | /* Return a symbol representing the weight of the font given by FONT. */ |
| 1855 | |
| 1856 | static INLINE Lisp_Object |
| 1857 | xlfd_symbolic_slant (font) |
| 1858 | struct font_name *font; |
| 1859 | { |
| 1860 | return xlfd_symbolic_value (slant_table, DIM (slant_table), |
| 1861 | font, XLFD_SLANT, Qnormal); |
| 1862 | } |
| 1863 | |
| 1864 | |
| 1865 | /* Return a numeric value for the weight of the font given by FONT. */ |
| 1866 | |
| 1867 | static INLINE int |
| 1868 | xlfd_numeric_weight (font) |
| 1869 | struct font_name *font; |
| 1870 | { |
| 1871 | return xlfd_numeric_value (weight_table, DIM (weight_table), |
| 1872 | font, XLFD_WEIGHT, XLFD_WEIGHT_MEDIUM); |
| 1873 | } |
| 1874 | |
| 1875 | |
| 1876 | /* Return a symbol representing the slant of the font given by FONT. */ |
| 1877 | |
| 1878 | static INLINE Lisp_Object |
| 1879 | xlfd_symbolic_weight (font) |
| 1880 | struct font_name *font; |
| 1881 | { |
| 1882 | return xlfd_symbolic_value (weight_table, DIM (weight_table), |
| 1883 | font, XLFD_WEIGHT, Qnormal); |
| 1884 | } |
| 1885 | |
| 1886 | |
| 1887 | /* Return a numeric value for the swidth of the font whose XLFD font |
| 1888 | name fields are found in FONT. */ |
| 1889 | |
| 1890 | static INLINE int |
| 1891 | xlfd_numeric_swidth (font) |
| 1892 | struct font_name *font; |
| 1893 | { |
| 1894 | return xlfd_numeric_value (swidth_table, DIM (swidth_table), |
| 1895 | font, XLFD_SWIDTH, XLFD_SWIDTH_MEDIUM); |
| 1896 | } |
| 1897 | |
| 1898 | |
| 1899 | /* Return a symbolic value for the swidth of FONT. */ |
| 1900 | |
| 1901 | static INLINE Lisp_Object |
| 1902 | xlfd_symbolic_swidth (font) |
| 1903 | struct font_name *font; |
| 1904 | { |
| 1905 | return xlfd_symbolic_value (swidth_table, DIM (swidth_table), |
| 1906 | font, XLFD_SWIDTH, Qnormal); |
| 1907 | } |
| 1908 | |
| 1909 | |
| 1910 | /* Look up the entry of SYMBOL in the vector TABLE which has DIM |
| 1911 | entries. Value is a pointer to the matching table entry or null if |
| 1912 | no element of TABLE contains SYMBOL. */ |
| 1913 | |
| 1914 | static struct table_entry * |
| 1915 | face_value (table, dim, symbol) |
| 1916 | struct table_entry *table; |
| 1917 | int dim; |
| 1918 | Lisp_Object symbol; |
| 1919 | { |
| 1920 | int i; |
| 1921 | |
| 1922 | xassert (SYMBOLP (symbol)); |
| 1923 | |
| 1924 | for (i = 0; i < dim; ++i) |
| 1925 | if (EQ (*table[i].symbol, symbol)) |
| 1926 | break; |
| 1927 | |
| 1928 | return i < dim ? table + i : NULL; |
| 1929 | } |
| 1930 | |
| 1931 | |
| 1932 | /* Return a numeric value for SYMBOL in the vector TABLE which has DIM |
| 1933 | entries. Value is -1 if SYMBOL is not found in TABLE. */ |
| 1934 | |
| 1935 | static INLINE int |
| 1936 | face_numeric_value (table, dim, symbol) |
| 1937 | struct table_entry *table; |
| 1938 | int dim; |
| 1939 | Lisp_Object symbol; |
| 1940 | { |
| 1941 | struct table_entry *p = face_value (table, dim, symbol); |
| 1942 | return p ? p->numeric : -1; |
| 1943 | } |
| 1944 | |
| 1945 | |
| 1946 | /* Return a numeric value representing the weight specified by Lisp |
| 1947 | symbol WEIGHT. Value is one of the enumerators of enum |
| 1948 | xlfd_weight. */ |
| 1949 | |
| 1950 | static INLINE int |
| 1951 | face_numeric_weight (weight) |
| 1952 | Lisp_Object weight; |
| 1953 | { |
| 1954 | return face_numeric_value (weight_table, DIM (weight_table), weight); |
| 1955 | } |
| 1956 | |
| 1957 | |
| 1958 | /* Return a numeric value representing the slant specified by Lisp |
| 1959 | symbol SLANT. Value is one of the enumerators of enum xlfd_slant. */ |
| 1960 | |
| 1961 | static INLINE int |
| 1962 | face_numeric_slant (slant) |
| 1963 | Lisp_Object slant; |
| 1964 | { |
| 1965 | return face_numeric_value (slant_table, DIM (slant_table), slant); |
| 1966 | } |
| 1967 | |
| 1968 | |
| 1969 | /* Return a numeric value representing the swidth specified by Lisp |
| 1970 | symbol WIDTH. Value is one of the enumerators of enum xlfd_swidth. */ |
| 1971 | |
| 1972 | static int |
| 1973 | face_numeric_swidth (width) |
| 1974 | Lisp_Object width; |
| 1975 | { |
| 1976 | return face_numeric_value (swidth_table, DIM (swidth_table), width); |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | #ifdef HAVE_WINDOW_SYSTEM |
| 1981 | |
| 1982 | /* Return non-zero if FONT is the name of a fixed-pitch font. */ |
| 1983 | |
| 1984 | static INLINE int |
| 1985 | xlfd_fixed_p (font) |
| 1986 | struct font_name *font; |
| 1987 | { |
| 1988 | /* Function split_font_name converts fields to lower-case, so there |
| 1989 | is no need to use tolower here. */ |
| 1990 | return *font->fields[XLFD_SPACING] != 'p'; |
| 1991 | } |
| 1992 | |
| 1993 | |
| 1994 | /* Return the point size of FONT on frame F, measured in 1/10 pt. |
| 1995 | |
| 1996 | The actual height of the font when displayed on F depends on the |
| 1997 | resolution of both the font and frame. For example, a 10pt font |
| 1998 | designed for a 100dpi display will display larger than 10pt on a |
| 1999 | 75dpi display. (It's not unusual to use fonts not designed for the |
| 2000 | display one is using. For example, some intlfonts are available in |
| 2001 | 72dpi versions, only.) |
| 2002 | |
| 2003 | Value is the real point size of FONT on frame F, or 0 if it cannot |
| 2004 | be determined. */ |
| 2005 | |
| 2006 | static INLINE int |
| 2007 | xlfd_point_size (f, font) |
| 2008 | struct frame *f; |
| 2009 | struct font_name *font; |
| 2010 | { |
| 2011 | double resy = FRAME_X_DISPLAY_INFO (f)->resy; |
| 2012 | double font_resy = atoi (font->fields[XLFD_RESY]); |
| 2013 | double font_pt = atoi (font->fields[XLFD_POINT_SIZE]); |
| 2014 | int real_pt; |
| 2015 | |
| 2016 | if (font_resy == 0 || font_pt == 0) |
| 2017 | real_pt = 0; |
| 2018 | else |
| 2019 | real_pt = (font_resy / resy) * font_pt + 0.5; |
| 2020 | |
| 2021 | return real_pt; |
| 2022 | } |
| 2023 | |
| 2024 | |
| 2025 | /* Return point size of PIXEL dots while considering Y-resultion (DPI) |
| 2026 | of frame F. This function is used to guess a point size of font |
| 2027 | when only the pixel height of the font is available. */ |
| 2028 | |
| 2029 | static INLINE int |
| 2030 | pixel_point_size (f, pixel) |
| 2031 | struct frame *f; |
| 2032 | int pixel; |
| 2033 | { |
| 2034 | double resy = FRAME_X_DISPLAY_INFO (f)->resy; |
| 2035 | double real_pt; |
| 2036 | int int_pt; |
| 2037 | |
| 2038 | /* As one inch is 72 points, 72/RESY gives the point size of one dot. */ |
| 2039 | real_pt = pixel * 72 / resy; |
| 2040 | int_pt = real_pt + 0.5; |
| 2041 | |
| 2042 | return int_pt; |
| 2043 | } |
| 2044 | |
| 2045 | |
| 2046 | /* Split XLFD font name FONT->name destructively into NUL-terminated, |
| 2047 | lower-case fields in FONT->fields. NUMERIC_P non-zero means |
| 2048 | compute numeric values for fields XLFD_POINT_SIZE, XLFD_SWIDTH, |
| 2049 | XLFD_RESY, XLFD_SLANT, and XLFD_WEIGHT in FONT->numeric. Value is |
| 2050 | zero if the font name doesn't have the format we expect. The |
| 2051 | expected format is a font name that starts with a `-' and has |
| 2052 | XLFD_LAST fields separated by `-'. (The XLFD specification allows |
| 2053 | forms of font names where certain field contents are enclosed in |
| 2054 | square brackets. We don't support that, for now. */ |
| 2055 | |
| 2056 | static int |
| 2057 | split_font_name (f, font, numeric_p) |
| 2058 | struct frame *f; |
| 2059 | struct font_name *font; |
| 2060 | int numeric_p; |
| 2061 | { |
| 2062 | int i = 0; |
| 2063 | int success_p; |
| 2064 | |
| 2065 | if (*font->name == '-') |
| 2066 | { |
| 2067 | char *p = xstrlwr (font->name) + 1; |
| 2068 | |
| 2069 | while (i < XLFD_LAST) |
| 2070 | { |
| 2071 | font->fields[i] = p; |
| 2072 | ++i; |
| 2073 | |
| 2074 | while (*p && *p != '-') |
| 2075 | ++p; |
| 2076 | |
| 2077 | if (*p != '-') |
| 2078 | break; |
| 2079 | |
| 2080 | *p++ = 0; |
| 2081 | } |
| 2082 | } |
| 2083 | |
| 2084 | success_p = i == XLFD_LAST; |
| 2085 | |
| 2086 | /* If requested, and font name was in the expected format, |
| 2087 | compute numeric values for some fields. */ |
| 2088 | if (numeric_p && success_p) |
| 2089 | { |
| 2090 | font->numeric[XLFD_POINT_SIZE] = xlfd_point_size (f, font); |
| 2091 | font->numeric[XLFD_RESY] = atoi (font->fields[XLFD_RESY]); |
| 2092 | font->numeric[XLFD_SLANT] = xlfd_numeric_slant (font); |
| 2093 | font->numeric[XLFD_WEIGHT] = xlfd_numeric_weight (font); |
| 2094 | font->numeric[XLFD_SWIDTH] = xlfd_numeric_swidth (font); |
| 2095 | } |
| 2096 | |
| 2097 | return success_p; |
| 2098 | } |
| 2099 | |
| 2100 | |
| 2101 | /* Build an XLFD font name from font name fields in FONT. Value is a |
| 2102 | pointer to the font name, which is allocated via xmalloc. */ |
| 2103 | |
| 2104 | static char * |
| 2105 | build_font_name (font) |
| 2106 | struct font_name *font; |
| 2107 | { |
| 2108 | int i; |
| 2109 | int size = 100; |
| 2110 | char *font_name = (char *) xmalloc (size); |
| 2111 | int total_length = 0; |
| 2112 | |
| 2113 | for (i = 0; i < XLFD_LAST; ++i) |
| 2114 | { |
| 2115 | /* Add 1 because of the leading `-'. */ |
| 2116 | int len = strlen (font->fields[i]) + 1; |
| 2117 | |
| 2118 | /* Reallocate font_name if necessary. Add 1 for the final |
| 2119 | NUL-byte. */ |
| 2120 | if (total_length + len + 1 >= size) |
| 2121 | { |
| 2122 | int new_size = max (2 * size, size + len + 1); |
| 2123 | int sz = new_size * sizeof *font_name; |
| 2124 | font_name = (char *) xrealloc (font_name, sz); |
| 2125 | size = new_size; |
| 2126 | } |
| 2127 | |
| 2128 | font_name[total_length] = '-'; |
| 2129 | bcopy (font->fields[i], font_name + total_length + 1, len - 1); |
| 2130 | total_length += len; |
| 2131 | } |
| 2132 | |
| 2133 | font_name[total_length] = 0; |
| 2134 | return font_name; |
| 2135 | } |
| 2136 | |
| 2137 | |
| 2138 | /* Free an array FONTS of N font_name structures. This frees FONTS |
| 2139 | itself and all `name' fields in its elements. */ |
| 2140 | |
| 2141 | static INLINE void |
| 2142 | free_font_names (fonts, n) |
| 2143 | struct font_name *fonts; |
| 2144 | int n; |
| 2145 | { |
| 2146 | while (n) |
| 2147 | xfree (fonts[--n].name); |
| 2148 | xfree (fonts); |
| 2149 | } |
| 2150 | |
| 2151 | |
| 2152 | /* Sort vector FONTS of font_name structures which contains NFONTS |
| 2153 | elements using qsort and comparison function CMPFN. F is the frame |
| 2154 | on which the fonts will be used. The global variable font_frame |
| 2155 | is temporarily set to F to make it available in CMPFN. */ |
| 2156 | |
| 2157 | static INLINE void |
| 2158 | sort_fonts (f, fonts, nfonts, cmpfn) |
| 2159 | struct frame *f; |
| 2160 | struct font_name *fonts; |
| 2161 | int nfonts; |
| 2162 | int (*cmpfn) P_ ((const void *, const void *)); |
| 2163 | { |
| 2164 | font_frame = f; |
| 2165 | qsort (fonts, nfonts, sizeof *fonts, cmpfn); |
| 2166 | font_frame = NULL; |
| 2167 | } |
| 2168 | |
| 2169 | |
| 2170 | /* Get fonts matching PATTERN on frame F. If F is null, use the first |
| 2171 | display in x_display_list. FONTS is a pointer to a vector of |
| 2172 | NFONTS font_name structures. TRY_ALTERNATIVES_P non-zero means try |
| 2173 | alternative patterns from Valternate_fontname_alist if no fonts are |
| 2174 | found matching PATTERN. SCALABLE_FONTS_P non-zero means include |
| 2175 | scalable fonts. |
| 2176 | |
| 2177 | For all fonts found, set FONTS[i].name to the name of the font, |
| 2178 | allocated via xmalloc, and split font names into fields. Ignore |
| 2179 | fonts that we can't parse. Value is the number of fonts found. |
| 2180 | |
| 2181 | This is similar to x_list_fonts. The differences are: |
| 2182 | |
| 2183 | 1. It avoids consing. |
| 2184 | 2. It never calls XLoadQueryFont. */ |
| 2185 | |
| 2186 | static int |
| 2187 | x_face_list_fonts (f, pattern, fonts, nfonts, try_alternatives_p, |
| 2188 | scalable_fonts_p) |
| 2189 | struct frame *f; |
| 2190 | char *pattern; |
| 2191 | struct font_name *fonts; |
| 2192 | int nfonts, try_alternatives_p; |
| 2193 | int scalable_fonts_p; |
| 2194 | { |
| 2195 | int n, i, j; |
| 2196 | char **names; |
| 2197 | #ifdef HAVE_X_WINDOWS |
| 2198 | Display *dpy = f ? FRAME_X_DISPLAY (f) : x_display_list->display; |
| 2199 | |
| 2200 | /* Get the list of fonts matching PATTERN from the X server. */ |
| 2201 | BLOCK_INPUT; |
| 2202 | names = XListFonts (dpy, pattern, nfonts, &n); |
| 2203 | UNBLOCK_INPUT; |
| 2204 | #endif |
| 2205 | #ifdef WINDOWSNT |
| 2206 | /* NTEMACS_TODO : currently this uses w32_list_fonts, but it may be |
| 2207 | better to do it the other way around. */ |
| 2208 | Lisp_Object lfonts; |
| 2209 | Lisp_Object lpattern, tem; |
| 2210 | |
| 2211 | n = 0; |
| 2212 | names = NULL; |
| 2213 | |
| 2214 | lpattern = build_string (pattern); |
| 2215 | |
| 2216 | /* Get the list of fonts matching PATTERN. */ |
| 2217 | BLOCK_INPUT; |
| 2218 | lfonts = w32_list_fonts (f, lpattern, 0, nfonts); |
| 2219 | UNBLOCK_INPUT; |
| 2220 | |
| 2221 | /* Count fonts returned */ |
| 2222 | for (tem = lfonts; CONSP (tem); tem = XCDR (tem)) |
| 2223 | n++; |
| 2224 | |
| 2225 | /* Allocate array. */ |
| 2226 | if (n) |
| 2227 | names = (char **) xmalloc (n * sizeof (char *)); |
| 2228 | |
| 2229 | /* Extract font names into char * array. */ |
| 2230 | tem = lfonts; |
| 2231 | for (i = 0; i < n; i++) |
| 2232 | { |
| 2233 | names[i] = XSTRING (XCAR (tem))->data; |
| 2234 | tem = XCDR (tem); |
| 2235 | } |
| 2236 | #endif |
| 2237 | |
| 2238 | if (names) |
| 2239 | { |
| 2240 | /* Make a copy of the font names we got from X, and |
| 2241 | split them into fields. */ |
| 2242 | for (i = j = 0; i < n; ++i) |
| 2243 | { |
| 2244 | /* Make a copy of the font name. */ |
| 2245 | fonts[j].name = xstrdup (names[i]); |
| 2246 | |
| 2247 | /* Ignore fonts having a name that we can't parse. */ |
| 2248 | if (!split_font_name (f, fonts + j, 1)) |
| 2249 | xfree (fonts[j].name); |
| 2250 | else if (font_scalable_p (fonts + j)) |
| 2251 | { |
| 2252 | #if SCALABLE_FONTS |
| 2253 | if (!scalable_fonts_p |
| 2254 | || !may_use_scalable_font_p (fonts + j, names[i])) |
| 2255 | xfree (fonts[j].name); |
| 2256 | else |
| 2257 | ++j; |
| 2258 | #else /* !SCALABLE_FONTS */ |
| 2259 | /* Always ignore scalable fonts. */ |
| 2260 | xfree (fonts[j].name); |
| 2261 | #endif /* !SCALABLE_FONTS */ |
| 2262 | } |
| 2263 | else |
| 2264 | ++j; |
| 2265 | } |
| 2266 | |
| 2267 | n = j; |
| 2268 | |
| 2269 | #ifdef HAVE_X_WINDOWS |
| 2270 | /* Free font names. */ |
| 2271 | BLOCK_INPUT; |
| 2272 | XFreeFontNames (names); |
| 2273 | UNBLOCK_INPUT; |
| 2274 | #endif |
| 2275 | } |
| 2276 | |
| 2277 | |
| 2278 | /* If no fonts found, try patterns from Valternate_fontname_alist. */ |
| 2279 | if (n == 0 && try_alternatives_p) |
| 2280 | { |
| 2281 | Lisp_Object list = Valternate_fontname_alist; |
| 2282 | |
| 2283 | while (CONSP (list)) |
| 2284 | { |
| 2285 | Lisp_Object entry = XCAR (list); |
| 2286 | if (CONSP (entry) |
| 2287 | && STRINGP (XCAR (entry)) |
| 2288 | && strcmp (XSTRING (XCAR (entry))->data, pattern) == 0) |
| 2289 | break; |
| 2290 | list = XCDR (list); |
| 2291 | } |
| 2292 | |
| 2293 | if (CONSP (list)) |
| 2294 | { |
| 2295 | Lisp_Object patterns = XCAR (list); |
| 2296 | Lisp_Object name; |
| 2297 | |
| 2298 | while (CONSP (patterns) |
| 2299 | /* If list is screwed up, give up. */ |
| 2300 | && (name = XCAR (patterns), |
| 2301 | STRINGP (name)) |
| 2302 | /* Ignore patterns equal to PATTERN because we tried that |
| 2303 | already with no success. */ |
| 2304 | && (strcmp (XSTRING (name)->data, pattern) == 0 |
| 2305 | || (n = x_face_list_fonts (f, XSTRING (name)->data, |
| 2306 | fonts, nfonts, 0, |
| 2307 | scalable_fonts_p), |
| 2308 | n == 0))) |
| 2309 | patterns = XCDR (patterns); |
| 2310 | } |
| 2311 | } |
| 2312 | |
| 2313 | return n; |
| 2314 | } |
| 2315 | |
| 2316 | |
| 2317 | /* Determine the first font matching PATTERN on frame F. Return in |
| 2318 | *FONT the matching font name, split into fields. Value is non-zero |
| 2319 | if a match was found. */ |
| 2320 | |
| 2321 | static int |
| 2322 | first_font_matching (f, pattern, font) |
| 2323 | struct frame *f; |
| 2324 | char *pattern; |
| 2325 | struct font_name *font; |
| 2326 | { |
| 2327 | int nfonts = 100; |
| 2328 | struct font_name *fonts; |
| 2329 | |
| 2330 | fonts = (struct font_name *) xmalloc (nfonts * sizeof *fonts); |
| 2331 | nfonts = x_face_list_fonts (f, pattern, fonts, nfonts, 1, 0); |
| 2332 | |
| 2333 | if (nfonts > 0) |
| 2334 | { |
| 2335 | bcopy (&fonts[0], font, sizeof *font); |
| 2336 | |
| 2337 | fonts[0].name = NULL; |
| 2338 | free_font_names (fonts, nfonts); |
| 2339 | } |
| 2340 | |
| 2341 | return nfonts > 0; |
| 2342 | } |
| 2343 | |
| 2344 | |
| 2345 | /* Determine fonts matching PATTERN on frame F. Sort resulting fonts |
| 2346 | using comparison function CMPFN. Value is the number of fonts |
| 2347 | found. If value is non-zero, *FONTS is set to a vector of |
| 2348 | font_name structures allocated from the heap containing matching |
| 2349 | fonts. Each element of *FONTS contains a name member that is also |
| 2350 | allocated from the heap. Font names in these structures are split |
| 2351 | into fields. Use free_font_names to free such an array. */ |
| 2352 | |
| 2353 | static int |
| 2354 | sorted_font_list (f, pattern, cmpfn, fonts) |
| 2355 | struct frame *f; |
| 2356 | char *pattern; |
| 2357 | int (*cmpfn) P_ ((const void *, const void *)); |
| 2358 | struct font_name **fonts; |
| 2359 | { |
| 2360 | int nfonts; |
| 2361 | |
| 2362 | /* Get the list of fonts matching pattern. 100 should suffice. */ |
| 2363 | nfonts = DEFAULT_FONT_LIST_LIMIT; |
| 2364 | if (INTEGERP (Vfont_list_limit) && XINT (Vfont_list_limit) > 0) |
| 2365 | nfonts = XFASTINT (Vfont_list_limit); |
| 2366 | |
| 2367 | *fonts = (struct font_name *) xmalloc (nfonts * sizeof **fonts); |
| 2368 | #if SCALABLE_FONTS |
| 2369 | nfonts = x_face_list_fonts (f, pattern, *fonts, nfonts, 1, 1); |
| 2370 | #else |
| 2371 | nfonts = x_face_list_fonts (f, pattern, *fonts, nfonts, 1, 0); |
| 2372 | #endif |
| 2373 | |
| 2374 | /* Sort the resulting array and return it in *FONTS. If no |
| 2375 | fonts were found, make sure to set *FONTS to null. */ |
| 2376 | if (nfonts) |
| 2377 | sort_fonts (f, *fonts, nfonts, cmpfn); |
| 2378 | else |
| 2379 | { |
| 2380 | xfree (*fonts); |
| 2381 | *fonts = NULL; |
| 2382 | } |
| 2383 | |
| 2384 | return nfonts; |
| 2385 | } |
| 2386 | |
| 2387 | |
| 2388 | /* Compare two font_name structures *A and *B. Value is analogous to |
| 2389 | strcmp. Sort order is given by the global variable |
| 2390 | font_sort_order. Font names are sorted so that, everything else |
| 2391 | being equal, fonts with a resolution closer to that of the frame on |
| 2392 | which they are used are listed first. The global variable |
| 2393 | font_frame is the frame on which we operate. */ |
| 2394 | |
| 2395 | static int |
| 2396 | cmp_font_names (a, b) |
| 2397 | const void *a, *b; |
| 2398 | { |
| 2399 | struct font_name *x = (struct font_name *) a; |
| 2400 | struct font_name *y = (struct font_name *) b; |
| 2401 | int cmp; |
| 2402 | |
| 2403 | /* All strings have been converted to lower-case by split_font_name, |
| 2404 | so we can use strcmp here. */ |
| 2405 | cmp = strcmp (x->fields[XLFD_FAMILY], y->fields[XLFD_FAMILY]); |
| 2406 | if (cmp == 0) |
| 2407 | { |
| 2408 | int i; |
| 2409 | |
| 2410 | for (i = 0; i < DIM (font_sort_order) && cmp == 0; ++i) |
| 2411 | { |
| 2412 | int j = font_sort_order[i]; |
| 2413 | cmp = x->numeric[j] - y->numeric[j]; |
| 2414 | } |
| 2415 | |
| 2416 | if (cmp == 0) |
| 2417 | { |
| 2418 | /* Everything else being equal, we prefer fonts with an |
| 2419 | y-resolution closer to that of the frame. */ |
| 2420 | int resy = FRAME_X_DISPLAY_INFO (font_frame)->resy; |
| 2421 | int x_resy = x->numeric[XLFD_RESY]; |
| 2422 | int y_resy = y->numeric[XLFD_RESY]; |
| 2423 | cmp = abs (resy - x_resy) - abs (resy - y_resy); |
| 2424 | } |
| 2425 | } |
| 2426 | |
| 2427 | return cmp; |
| 2428 | } |
| 2429 | |
| 2430 | |
| 2431 | /* Get a sorted list of fonts of family FAMILY on frame F. If PATTERN |
| 2432 | is non-nil list fonts matching that pattern. Otherwise, if |
| 2433 | REGISTRY is non-nil return only fonts with that registry, otherwise |
| 2434 | return fonts of any registry. Set *FONTS to a vector of font_name |
| 2435 | structures allocated from the heap containing the fonts found. |
| 2436 | Value is the number of fonts found. */ |
| 2437 | |
| 2438 | static int |
| 2439 | font_list (f, pattern, family, registry, fonts) |
| 2440 | struct frame *f; |
| 2441 | Lisp_Object pattern, family, registry; |
| 2442 | struct font_name **fonts; |
| 2443 | { |
| 2444 | char *pattern_str, *family_str, *registry_str; |
| 2445 | |
| 2446 | if (NILP (pattern)) |
| 2447 | { |
| 2448 | family_str = (NILP (family) ? "*" : (char *) XSTRING (family)->data); |
| 2449 | registry_str = (NILP (registry) ? "*" : (char *) XSTRING (registry)->data); |
| 2450 | |
| 2451 | pattern_str = (char *) alloca (strlen (family_str) |
| 2452 | + strlen (registry_str) |
| 2453 | + 10); |
| 2454 | if (index (family_str, '-')) |
| 2455 | sprintf (pattern_str, "-%s-*-%s", family_str, registry_str); |
| 2456 | else |
| 2457 | sprintf (pattern_str, "-*-%s-*-%s", family_str, registry_str); |
| 2458 | } |
| 2459 | else |
| 2460 | pattern_str = (char *) XSTRING (pattern)->data; |
| 2461 | |
| 2462 | return sorted_font_list (f, pattern_str, cmp_font_names, fonts); |
| 2463 | } |
| 2464 | |
| 2465 | |
| 2466 | /* Remove elements from LIST whose cars are `equal'. Called from |
| 2467 | x-family-fonts and x-font-family-list to remove duplicate font |
| 2468 | entries. */ |
| 2469 | |
| 2470 | static void |
| 2471 | remove_duplicates (list) |
| 2472 | Lisp_Object list; |
| 2473 | { |
| 2474 | Lisp_Object tail = list; |
| 2475 | |
| 2476 | while (!NILP (tail) && !NILP (XCDR (tail))) |
| 2477 | { |
| 2478 | Lisp_Object next = XCDR (tail); |
| 2479 | if (!NILP (Fequal (XCAR (next), XCAR (tail)))) |
| 2480 | XCDR (tail) = XCDR (next); |
| 2481 | else |
| 2482 | tail = XCDR (tail); |
| 2483 | } |
| 2484 | } |
| 2485 | |
| 2486 | |
| 2487 | DEFUN ("x-family-fonts", Fx_family_fonts, Sx_family_fonts, 0, 2, 0, |
| 2488 | "Return a list of available fonts of family FAMILY on FRAME.\n\ |
| 2489 | If FAMILY is omitted or nil, list all families.\n\ |
| 2490 | Otherwise, FAMILY must be a string, possibly containing wildcards\n\ |
| 2491 | `?' and `*'.\n\ |
| 2492 | If FRAME is omitted or nil, use the selected frame.\n\ |
| 2493 | Each element of the result is a vector [FAMILY WIDTH POINT-SIZE WEIGHT\n\ |
| 2494 | SLANT FIXED-P FULL REGISTRY-AND-ENCODING].\n\ |
| 2495 | FAMILY is the font family name. POINT-SIZE is the size of the\n\ |
| 2496 | font in 1/10 pt. WIDTH, WEIGHT, and SLANT are symbols describing the\n\ |
| 2497 | width, weight and slant of the font. These symbols are the same as for\n\ |
| 2498 | face attributes. FIXED-P is non-nil if the font is fixed-pitch.\n\ |
| 2499 | FULL is the full name of the font, and REGISTRY-AND-ENCODING is a string\n\ |
| 2500 | giving the registry and encoding of the font.\n\ |
| 2501 | The result list is sorted according to the current setting of\n\ |
| 2502 | the face font sort order.") |
| 2503 | (family, frame) |
| 2504 | Lisp_Object family, frame; |
| 2505 | { |
| 2506 | struct frame *f = check_x_frame (frame); |
| 2507 | struct font_name *fonts; |
| 2508 | int i, nfonts; |
| 2509 | Lisp_Object result; |
| 2510 | struct gcpro gcpro1; |
| 2511 | |
| 2512 | if (!NILP (family)) |
| 2513 | CHECK_STRING (family, 1); |
| 2514 | |
| 2515 | result = Qnil; |
| 2516 | GCPRO1 (result); |
| 2517 | nfonts = font_list (f, Qnil, family, Qnil, &fonts); |
| 2518 | for (i = nfonts - 1; i >= 0; --i) |
| 2519 | { |
| 2520 | Lisp_Object v = Fmake_vector (make_number (8), Qnil); |
| 2521 | char *tem; |
| 2522 | |
| 2523 | #define ASET(VECTOR, IDX, VAL) (XVECTOR (VECTOR)->contents[IDX] = (VAL)) |
| 2524 | |
| 2525 | ASET (v, 0, build_string (fonts[i].fields[XLFD_FAMILY])); |
| 2526 | ASET (v, 1, xlfd_symbolic_swidth (fonts + i)); |
| 2527 | ASET (v, 2, make_number (xlfd_point_size (f, fonts + i))); |
| 2528 | ASET (v, 3, xlfd_symbolic_weight (fonts + i)); |
| 2529 | ASET (v, 4, xlfd_symbolic_slant (fonts + i)); |
| 2530 | ASET (v, 5, xlfd_fixed_p (fonts + i) ? Qt : Qnil); |
| 2531 | tem = build_font_name (fonts + i); |
| 2532 | ASET (v, 6, build_string (tem)); |
| 2533 | sprintf (tem, "%s-%s", fonts[i].fields[XLFD_REGISTRY], |
| 2534 | fonts[i].fields[XLFD_ENCODING]); |
| 2535 | ASET (v, 7, build_string (tem)); |
| 2536 | xfree (tem); |
| 2537 | |
| 2538 | result = Fcons (v, result); |
| 2539 | |
| 2540 | #undef ASET |
| 2541 | } |
| 2542 | |
| 2543 | remove_duplicates (result); |
| 2544 | free_font_names (fonts, nfonts); |
| 2545 | UNGCPRO; |
| 2546 | return result; |
| 2547 | } |
| 2548 | |
| 2549 | |
| 2550 | DEFUN ("x-font-family-list", Fx_font_family_list, Sx_font_family_list, |
| 2551 | 0, 1, 0, |
| 2552 | "Return a list of available font families on FRAME.\n\ |
| 2553 | If FRAME is omitted or nil, use the selected frame.\n\ |
| 2554 | Value is a list of conses (FAMILY . FIXED-P) where FAMILY\n\ |
| 2555 | is a font family, and FIXED-P is non-nil if fonts of that family\n\ |
| 2556 | are fixed-pitch.") |
| 2557 | (frame) |
| 2558 | Lisp_Object frame; |
| 2559 | { |
| 2560 | struct frame *f = check_x_frame (frame); |
| 2561 | int nfonts, i; |
| 2562 | struct font_name *fonts; |
| 2563 | Lisp_Object result; |
| 2564 | struct gcpro gcpro1; |
| 2565 | int count = specpdl_ptr - specpdl; |
| 2566 | int limit; |
| 2567 | |
| 2568 | /* Let's consider all fonts. Increase the limit for matching |
| 2569 | fonts until we have them all. */ |
| 2570 | for (limit = 500;;) |
| 2571 | { |
| 2572 | specbind (intern ("font-list-limit"), make_number (limit)); |
| 2573 | nfonts = font_list (f, Qnil, Qnil, Qnil, &fonts); |
| 2574 | |
| 2575 | if (nfonts == limit) |
| 2576 | { |
| 2577 | free_font_names (fonts, nfonts); |
| 2578 | limit *= 2; |
| 2579 | } |
| 2580 | else |
| 2581 | break; |
| 2582 | } |
| 2583 | |
| 2584 | result = Qnil; |
| 2585 | GCPRO1 (result); |
| 2586 | for (i = nfonts - 1; i >= 0; --i) |
| 2587 | result = Fcons (Fcons (build_string (fonts[i].fields[XLFD_FAMILY]), |
| 2588 | xlfd_fixed_p (fonts + i) ? Qt : Qnil), |
| 2589 | result); |
| 2590 | |
| 2591 | remove_duplicates (result); |
| 2592 | free_font_names (fonts, nfonts); |
| 2593 | UNGCPRO; |
| 2594 | return unbind_to (count, result); |
| 2595 | } |
| 2596 | |
| 2597 | |
| 2598 | DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 5, 0, |
| 2599 | "Return a list of the names of available fonts matching PATTERN.\n\ |
| 2600 | If optional arguments FACE and FRAME are specified, return only fonts\n\ |
| 2601 | the same size as FACE on FRAME.\n\ |
| 2602 | PATTERN is a string, perhaps with wildcard characters;\n\ |
| 2603 | the * character matches any substring, and\n\ |
| 2604 | the ? character matches any single character.\n\ |
| 2605 | PATTERN is case-insensitive.\n\ |
| 2606 | FACE is a face name--a symbol.\n\ |
| 2607 | \n\ |
| 2608 | The return value is a list of strings, suitable as arguments to\n\ |
| 2609 | set-face-font.\n\ |
| 2610 | \n\ |
| 2611 | Fonts Emacs can't use may or may not be excluded\n\ |
| 2612 | even if they match PATTERN and FACE.\n\ |
| 2613 | The optional fourth argument MAXIMUM sets a limit on how many\n\ |
| 2614 | fonts to match. The first MAXIMUM fonts are reported.\n\ |
| 2615 | The optional fifth argument WIDTH, if specified, is a number of columns\n\ |
| 2616 | occupied by a character of a font. In that case, return only fonts\n\ |
| 2617 | the WIDTH times as wide as FACE on FRAME.") |
| 2618 | (pattern, face, frame, maximum, width) |
| 2619 | Lisp_Object pattern, face, frame, maximum, width; |
| 2620 | { |
| 2621 | struct frame *f; |
| 2622 | int size; |
| 2623 | int maxnames; |
| 2624 | |
| 2625 | check_x (); |
| 2626 | CHECK_STRING (pattern, 0); |
| 2627 | |
| 2628 | if (NILP (maximum)) |
| 2629 | maxnames = 2000; |
| 2630 | else |
| 2631 | { |
| 2632 | CHECK_NATNUM (maximum, 0); |
| 2633 | maxnames = XINT (maximum); |
| 2634 | } |
| 2635 | |
| 2636 | if (!NILP (width)) |
| 2637 | CHECK_NUMBER (width, 4); |
| 2638 | |
| 2639 | /* We can't simply call check_x_frame because this function may be |
| 2640 | called before any frame is created. */ |
| 2641 | f = frame_or_selected_frame (frame, 2); |
| 2642 | if (!FRAME_WINDOW_P (f)) |
| 2643 | { |
| 2644 | /* Perhaps we have not yet created any frame. */ |
| 2645 | f = NULL; |
| 2646 | face = Qnil; |
| 2647 | } |
| 2648 | |
| 2649 | /* Determine the width standard for comparison with the fonts we find. */ |
| 2650 | |
| 2651 | if (NILP (face)) |
| 2652 | size = 0; |
| 2653 | else |
| 2654 | { |
| 2655 | /* This is of limited utility since it works with character |
| 2656 | widths. Keep it for compatibility. --gerd. */ |
| 2657 | int face_id = lookup_named_face (f, face, 0); |
| 2658 | struct face *face = FACE_FROM_ID (f, face_id); |
| 2659 | |
| 2660 | if (face->font) |
| 2661 | size = FONT_WIDTH (face->font); |
| 2662 | else |
| 2663 | size = FONT_WIDTH (FRAME_FONT (f)); |
| 2664 | |
| 2665 | if (!NILP (width)) |
| 2666 | size *= XINT (width); |
| 2667 | } |
| 2668 | |
| 2669 | { |
| 2670 | Lisp_Object args[2]; |
| 2671 | |
| 2672 | args[0] = x_list_fonts (f, pattern, size, maxnames); |
| 2673 | if (f == NULL) |
| 2674 | /* We don't have to check fontsets. */ |
| 2675 | return args[0]; |
| 2676 | args[1] = list_fontsets (f, pattern, size); |
| 2677 | return Fnconc (2, args); |
| 2678 | } |
| 2679 | } |
| 2680 | |
| 2681 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2682 | |
| 2683 | |
| 2684 | \f |
| 2685 | /*********************************************************************** |
| 2686 | Lisp Faces |
| 2687 | ***********************************************************************/ |
| 2688 | |
| 2689 | /* Access face attributes of face FACE, a Lisp vector. */ |
| 2690 | |
| 2691 | #define LFACE_FAMILY(LFACE) \ |
| 2692 | XVECTOR (LFACE)->contents[LFACE_FAMILY_INDEX] |
| 2693 | #define LFACE_HEIGHT(LFACE) \ |
| 2694 | XVECTOR (LFACE)->contents[LFACE_HEIGHT_INDEX] |
| 2695 | #define LFACE_WEIGHT(LFACE) \ |
| 2696 | XVECTOR (LFACE)->contents[LFACE_WEIGHT_INDEX] |
| 2697 | #define LFACE_SLANT(LFACE) \ |
| 2698 | XVECTOR (LFACE)->contents[LFACE_SLANT_INDEX] |
| 2699 | #define LFACE_UNDERLINE(LFACE) \ |
| 2700 | XVECTOR (LFACE)->contents[LFACE_UNDERLINE_INDEX] |
| 2701 | #define LFACE_INVERSE(LFACE) \ |
| 2702 | XVECTOR (LFACE)->contents[LFACE_INVERSE_INDEX] |
| 2703 | #define LFACE_FOREGROUND(LFACE) \ |
| 2704 | XVECTOR (LFACE)->contents[LFACE_FOREGROUND_INDEX] |
| 2705 | #define LFACE_BACKGROUND(LFACE) \ |
| 2706 | XVECTOR (LFACE)->contents[LFACE_BACKGROUND_INDEX] |
| 2707 | #define LFACE_STIPPLE(LFACE) \ |
| 2708 | XVECTOR (LFACE)->contents[LFACE_STIPPLE_INDEX] |
| 2709 | #define LFACE_SWIDTH(LFACE) \ |
| 2710 | XVECTOR (LFACE)->contents[LFACE_SWIDTH_INDEX] |
| 2711 | #define LFACE_OVERLINE(LFACE) \ |
| 2712 | XVECTOR (LFACE)->contents[LFACE_OVERLINE_INDEX] |
| 2713 | #define LFACE_STRIKE_THROUGH(LFACE) \ |
| 2714 | XVECTOR (LFACE)->contents[LFACE_STRIKE_THROUGH_INDEX] |
| 2715 | #define LFACE_BOX(LFACE) \ |
| 2716 | XVECTOR (LFACE)->contents[LFACE_BOX_INDEX] |
| 2717 | #define LFACE_FONT(LFACE) \ |
| 2718 | XVECTOR (LFACE)->contents[LFACE_FONT_INDEX] |
| 2719 | |
| 2720 | /* Non-zero if LFACE is a Lisp face. A Lisp face is a vector of size |
| 2721 | LFACE_VECTOR_SIZE which has the symbol `face' in slot 0. */ |
| 2722 | |
| 2723 | #define LFACEP(LFACE) \ |
| 2724 | (VECTORP (LFACE) \ |
| 2725 | && XVECTOR (LFACE)->size == LFACE_VECTOR_SIZE \ |
| 2726 | && EQ (XVECTOR (LFACE)->contents[0], Qface)) |
| 2727 | |
| 2728 | |
| 2729 | #if GLYPH_DEBUG |
| 2730 | |
| 2731 | /* Check consistency of Lisp face attribute vector ATTRS. */ |
| 2732 | |
| 2733 | static void |
| 2734 | check_lface_attrs (attrs) |
| 2735 | Lisp_Object *attrs; |
| 2736 | { |
| 2737 | xassert (UNSPECIFIEDP (attrs[LFACE_FAMILY_INDEX]) |
| 2738 | || STRINGP (attrs[LFACE_FAMILY_INDEX])); |
| 2739 | xassert (UNSPECIFIEDP (attrs[LFACE_SWIDTH_INDEX]) |
| 2740 | || SYMBOLP (attrs[LFACE_SWIDTH_INDEX])); |
| 2741 | xassert (UNSPECIFIEDP (attrs[LFACE_HEIGHT_INDEX]) |
| 2742 | || INTEGERP (attrs[LFACE_HEIGHT_INDEX])); |
| 2743 | xassert (UNSPECIFIEDP (attrs[LFACE_WEIGHT_INDEX]) |
| 2744 | || SYMBOLP (attrs[LFACE_WEIGHT_INDEX])); |
| 2745 | xassert (UNSPECIFIEDP (attrs[LFACE_SLANT_INDEX]) |
| 2746 | || SYMBOLP (attrs[LFACE_SLANT_INDEX])); |
| 2747 | xassert (UNSPECIFIEDP (attrs[LFACE_UNDERLINE_INDEX]) |
| 2748 | || SYMBOLP (attrs[LFACE_UNDERLINE_INDEX]) |
| 2749 | || STRINGP (attrs[LFACE_UNDERLINE_INDEX])); |
| 2750 | xassert (UNSPECIFIEDP (attrs[LFACE_OVERLINE_INDEX]) |
| 2751 | || SYMBOLP (attrs[LFACE_OVERLINE_INDEX]) |
| 2752 | || STRINGP (attrs[LFACE_OVERLINE_INDEX])); |
| 2753 | xassert (UNSPECIFIEDP (attrs[LFACE_STRIKE_THROUGH_INDEX]) |
| 2754 | || SYMBOLP (attrs[LFACE_STRIKE_THROUGH_INDEX]) |
| 2755 | || STRINGP (attrs[LFACE_STRIKE_THROUGH_INDEX])); |
| 2756 | xassert (UNSPECIFIEDP (attrs[LFACE_BOX_INDEX]) |
| 2757 | || SYMBOLP (attrs[LFACE_BOX_INDEX]) |
| 2758 | || STRINGP (attrs[LFACE_BOX_INDEX]) |
| 2759 | || INTEGERP (attrs[LFACE_BOX_INDEX]) |
| 2760 | || CONSP (attrs[LFACE_BOX_INDEX])); |
| 2761 | xassert (UNSPECIFIEDP (attrs[LFACE_INVERSE_INDEX]) |
| 2762 | || SYMBOLP (attrs[LFACE_INVERSE_INDEX])); |
| 2763 | xassert (UNSPECIFIEDP (attrs[LFACE_FOREGROUND_INDEX]) |
| 2764 | || STRINGP (attrs[LFACE_FOREGROUND_INDEX])); |
| 2765 | xassert (UNSPECIFIEDP (attrs[LFACE_BACKGROUND_INDEX]) |
| 2766 | || STRINGP (attrs[LFACE_BACKGROUND_INDEX])); |
| 2767 | #ifdef HAVE_WINDOW_SYSTEM |
| 2768 | xassert (UNSPECIFIEDP (attrs[LFACE_STIPPLE_INDEX]) |
| 2769 | || SYMBOLP (attrs[LFACE_STIPPLE_INDEX]) |
| 2770 | || !NILP (Fbitmap_spec_p (attrs[LFACE_STIPPLE_INDEX]))); |
| 2771 | xassert (UNSPECIFIEDP (attrs[LFACE_FONT_INDEX]) |
| 2772 | || NILP (attrs[LFACE_FONT_INDEX]) |
| 2773 | || STRINGP (attrs[LFACE_FONT_INDEX])); |
| 2774 | #endif |
| 2775 | } |
| 2776 | |
| 2777 | |
| 2778 | /* Check consistency of attributes of Lisp face LFACE (a Lisp vector). */ |
| 2779 | |
| 2780 | static void |
| 2781 | check_lface (lface) |
| 2782 | Lisp_Object lface; |
| 2783 | { |
| 2784 | if (!NILP (lface)) |
| 2785 | { |
| 2786 | xassert (LFACEP (lface)); |
| 2787 | check_lface_attrs (XVECTOR (lface)->contents); |
| 2788 | } |
| 2789 | } |
| 2790 | |
| 2791 | #else /* GLYPH_DEBUG == 0 */ |
| 2792 | |
| 2793 | #define check_lface_attrs(attrs) (void) 0 |
| 2794 | #define check_lface(lface) (void) 0 |
| 2795 | |
| 2796 | #endif /* GLYPH_DEBUG == 0 */ |
| 2797 | |
| 2798 | |
| 2799 | /* Resolve face name FACE_NAME. If FACE_NAME is a string, intern it |
| 2800 | to make it a symvol. If FACE_NAME is an alias for another face, |
| 2801 | return that face's name. */ |
| 2802 | |
| 2803 | static Lisp_Object |
| 2804 | resolve_face_name (face_name) |
| 2805 | Lisp_Object face_name; |
| 2806 | { |
| 2807 | Lisp_Object aliased; |
| 2808 | |
| 2809 | if (STRINGP (face_name)) |
| 2810 | face_name = intern (XSTRING (face_name)->data); |
| 2811 | |
| 2812 | for (;;) |
| 2813 | { |
| 2814 | aliased = Fget (face_name, Qface_alias); |
| 2815 | if (NILP (aliased)) |
| 2816 | break; |
| 2817 | else |
| 2818 | face_name = aliased; |
| 2819 | } |
| 2820 | |
| 2821 | return face_name; |
| 2822 | } |
| 2823 | |
| 2824 | |
| 2825 | /* Return the face definition of FACE_NAME on frame F. F null means |
| 2826 | return the global definition. FACE_NAME may be a string or a |
| 2827 | symbol (apparently Emacs 20.2 allows strings as face names in face |
| 2828 | text properties; ediff uses that). If FACE_NAME is an alias for |
| 2829 | another face, return that face's definition. If SIGNAL_P is |
| 2830 | non-zero, signal an error if FACE_NAME is not a valid face name. |
| 2831 | If SIGNAL_P is zero, value is nil if FACE_NAME is not a valid face |
| 2832 | name. */ |
| 2833 | |
| 2834 | static INLINE Lisp_Object |
| 2835 | lface_from_face_name (f, face_name, signal_p) |
| 2836 | struct frame *f; |
| 2837 | Lisp_Object face_name; |
| 2838 | int signal_p; |
| 2839 | { |
| 2840 | Lisp_Object lface; |
| 2841 | |
| 2842 | face_name = resolve_face_name (face_name); |
| 2843 | |
| 2844 | if (f) |
| 2845 | lface = assq_no_quit (face_name, f->face_alist); |
| 2846 | else |
| 2847 | lface = assq_no_quit (face_name, Vface_new_frame_defaults); |
| 2848 | |
| 2849 | if (CONSP (lface)) |
| 2850 | lface = XCDR (lface); |
| 2851 | else if (signal_p) |
| 2852 | signal_error ("Invalid face", face_name); |
| 2853 | |
| 2854 | check_lface (lface); |
| 2855 | return lface; |
| 2856 | } |
| 2857 | |
| 2858 | |
| 2859 | /* Get face attributes of face FACE_NAME from frame-local faces on |
| 2860 | frame F. Store the resulting attributes in ATTRS which must point |
| 2861 | to a vector of Lisp_Objects of size LFACE_VECTOR_SIZE. If SIGNAL_P |
| 2862 | is non-zero, signal an error if FACE_NAME does not name a face. |
| 2863 | Otherwise, value is zero if FACE_NAME is not a face. */ |
| 2864 | |
| 2865 | static INLINE int |
| 2866 | get_lface_attributes (f, face_name, attrs, signal_p) |
| 2867 | struct frame *f; |
| 2868 | Lisp_Object face_name; |
| 2869 | Lisp_Object *attrs; |
| 2870 | int signal_p; |
| 2871 | { |
| 2872 | Lisp_Object lface; |
| 2873 | int success_p; |
| 2874 | |
| 2875 | lface = lface_from_face_name (f, face_name, signal_p); |
| 2876 | if (!NILP (lface)) |
| 2877 | { |
| 2878 | bcopy (XVECTOR (lface)->contents, attrs, |
| 2879 | LFACE_VECTOR_SIZE * sizeof *attrs); |
| 2880 | success_p = 1; |
| 2881 | } |
| 2882 | else |
| 2883 | success_p = 0; |
| 2884 | |
| 2885 | return success_p; |
| 2886 | } |
| 2887 | |
| 2888 | |
| 2889 | /* Non-zero if all attributes in face attribute vector ATTRS are |
| 2890 | specified, i.e. are non-nil. */ |
| 2891 | |
| 2892 | static int |
| 2893 | lface_fully_specified_p (attrs) |
| 2894 | Lisp_Object *attrs; |
| 2895 | { |
| 2896 | int i; |
| 2897 | |
| 2898 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) |
| 2899 | if (UNSPECIFIEDP (attrs[i]) && i != LFACE_FONT_INDEX) |
| 2900 | break; |
| 2901 | |
| 2902 | return i == LFACE_VECTOR_SIZE; |
| 2903 | } |
| 2904 | |
| 2905 | #ifdef HAVE_WINDOW_SYSTEM |
| 2906 | |
| 2907 | /* Set font-related attributes of Lisp face LFACE from the fullname of |
| 2908 | the font opened by FONTNAME. If FORCE_P is zero, set only |
| 2909 | unspecified attributes of LFACE. The exception is `font' |
| 2910 | attribute. It is set to FONTNAME as is regardless of FORCE_P. |
| 2911 | |
| 2912 | If FONTNAME is not available on frame F, |
| 2913 | return 0 if MAY_FAIL_P is non-zero, otherwise abort. |
| 2914 | If the fullname is not in a valid XLFD format, |
| 2915 | return 0 if MAY_FAIL_P is non-zero, otherwise set normal values |
| 2916 | in LFACE and return 1. |
| 2917 | Otherwise, return 1. */ |
| 2918 | |
| 2919 | static int |
| 2920 | set_lface_from_font_name (f, lface, fontname, force_p, may_fail_p) |
| 2921 | struct frame *f; |
| 2922 | Lisp_Object lface; |
| 2923 | Lisp_Object fontname; |
| 2924 | int force_p, may_fail_p; |
| 2925 | { |
| 2926 | struct font_name font; |
| 2927 | char *buffer; |
| 2928 | int pt; |
| 2929 | int have_xlfd_p; |
| 2930 | int fontset; |
| 2931 | char *font_name = XSTRING (fontname)->data; |
| 2932 | struct font_info *font_info; |
| 2933 | |
| 2934 | /* If FONTNAME is actually a fontset name, get ASCII font name of it. */ |
| 2935 | fontset = fs_query_fontset (fontname, 0); |
| 2936 | if (fontset >= 0) |
| 2937 | font_name = XSTRING (fontset_ascii (fontset))->data; |
| 2938 | |
| 2939 | /* Check if FONT_NAME is surely available on the system. Usually |
| 2940 | FONT_NAME is already cached for the frame F and FS_LOAD_FONT |
| 2941 | returns quickly. But, even if FONT_NAME is not yet cached, |
| 2942 | caching it now is not futail because we anyway load the font |
| 2943 | later. */ |
| 2944 | BLOCK_INPUT; |
| 2945 | font_info = FS_LOAD_FONT (f, 0, font_name, -1); |
| 2946 | UNBLOCK_INPUT; |
| 2947 | |
| 2948 | if (!font_info) |
| 2949 | { |
| 2950 | if (may_fail_p) |
| 2951 | return 0; |
| 2952 | abort (); |
| 2953 | } |
| 2954 | |
| 2955 | font.name = STRDUPA (font_info->full_name); |
| 2956 | have_xlfd_p = split_font_name (f, &font, 1); |
| 2957 | |
| 2958 | /* Set attributes only if unspecified, otherwise face defaults for |
| 2959 | new frames would never take effect. If we couldn't get a font |
| 2960 | name conforming to XLFD, set normal values. */ |
| 2961 | |
| 2962 | if (force_p || UNSPECIFIEDP (LFACE_FAMILY (lface))) |
| 2963 | { |
| 2964 | Lisp_Object val; |
| 2965 | if (have_xlfd_p) |
| 2966 | { |
| 2967 | buffer = (char *) alloca (strlen (font.fields[XLFD_FAMILY]) |
| 2968 | + strlen (font.fields[XLFD_FOUNDRY]) |
| 2969 | + 2); |
| 2970 | sprintf (buffer, "%s-%s", font.fields[XLFD_FOUNDRY], |
| 2971 | font.fields[XLFD_FAMILY]); |
| 2972 | val = build_string (buffer); |
| 2973 | } |
| 2974 | else |
| 2975 | val = build_string ("*"); |
| 2976 | LFACE_FAMILY (lface) = val; |
| 2977 | } |
| 2978 | |
| 2979 | if (force_p || UNSPECIFIEDP (LFACE_HEIGHT (lface))) |
| 2980 | { |
| 2981 | if (have_xlfd_p) |
| 2982 | pt = xlfd_point_size (f, &font); |
| 2983 | else |
| 2984 | pt = pixel_point_size (f, font_info->height * 10); |
| 2985 | xassert (pt > 0); |
| 2986 | LFACE_HEIGHT (lface) = make_number (pt); |
| 2987 | } |
| 2988 | |
| 2989 | if (force_p || UNSPECIFIEDP (LFACE_SWIDTH (lface))) |
| 2990 | LFACE_SWIDTH (lface) |
| 2991 | = have_xlfd_p ? xlfd_symbolic_swidth (&font) : Qnormal; |
| 2992 | |
| 2993 | if (force_p || UNSPECIFIEDP (LFACE_WEIGHT (lface))) |
| 2994 | LFACE_WEIGHT (lface) |
| 2995 | = have_xlfd_p ? xlfd_symbolic_weight (&font) : Qnormal; |
| 2996 | |
| 2997 | if (force_p || UNSPECIFIEDP (LFACE_SLANT (lface))) |
| 2998 | LFACE_SLANT (lface) |
| 2999 | = have_xlfd_p ? xlfd_symbolic_slant (&font) : Qnormal; |
| 3000 | |
| 3001 | LFACE_FONT (lface) = fontname; |
| 3002 | |
| 3003 | return 1; |
| 3004 | } |
| 3005 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3006 | |
| 3007 | |
| 3008 | /* Merge two Lisp face attribute vectors FROM and TO and store the |
| 3009 | resulting attributes in TO. Every non-nil attribute of FROM |
| 3010 | overrides the corresponding attribute of TO. */ |
| 3011 | |
| 3012 | static INLINE void |
| 3013 | merge_face_vectors (from, to) |
| 3014 | Lisp_Object *from, *to; |
| 3015 | { |
| 3016 | int i; |
| 3017 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) |
| 3018 | if (!UNSPECIFIEDP (from[i])) |
| 3019 | to[i] = from[i]; |
| 3020 | } |
| 3021 | |
| 3022 | |
| 3023 | /* Given a Lisp face attribute vector TO and a Lisp object PROP that |
| 3024 | is a face property, determine the resulting face attributes on |
| 3025 | frame F, and store them in TO. PROP may be a single face |
| 3026 | specification or a list of such specifications. Each face |
| 3027 | specification can be |
| 3028 | |
| 3029 | 1. A symbol or string naming a Lisp face. |
| 3030 | |
| 3031 | 2. A property list of the form (KEYWORD VALUE ...) where each |
| 3032 | KEYWORD is a face attribute name, and value is an appropriate value |
| 3033 | for that attribute. |
| 3034 | |
| 3035 | 3. Conses or the form (FOREGROUND-COLOR . COLOR) or |
| 3036 | (BACKGROUND-COLOR . COLOR) where COLOR is a color name. This is |
| 3037 | for compatibility with 20.2. |
| 3038 | |
| 3039 | Face specifications earlier in lists take precedence over later |
| 3040 | specifications. */ |
| 3041 | |
| 3042 | static void |
| 3043 | merge_face_vector_with_property (f, to, prop) |
| 3044 | struct frame *f; |
| 3045 | Lisp_Object *to; |
| 3046 | Lisp_Object prop; |
| 3047 | { |
| 3048 | if (CONSP (prop)) |
| 3049 | { |
| 3050 | Lisp_Object first = XCAR (prop); |
| 3051 | |
| 3052 | if (EQ (first, Qforeground_color) |
| 3053 | || EQ (first, Qbackground_color)) |
| 3054 | { |
| 3055 | /* One of (FOREGROUND-COLOR . COLOR) or (BACKGROUND-COLOR |
| 3056 | . COLOR). COLOR must be a string. */ |
| 3057 | Lisp_Object color_name = XCDR (prop); |
| 3058 | Lisp_Object color = first; |
| 3059 | |
| 3060 | if (STRINGP (color_name)) |
| 3061 | { |
| 3062 | if (EQ (color, Qforeground_color)) |
| 3063 | to[LFACE_FOREGROUND_INDEX] = color_name; |
| 3064 | else |
| 3065 | to[LFACE_BACKGROUND_INDEX] = color_name; |
| 3066 | } |
| 3067 | else |
| 3068 | add_to_log ("Invalid face color", color_name, Qnil); |
| 3069 | } |
| 3070 | else if (SYMBOLP (first) |
| 3071 | && *XSYMBOL (first)->name->data == ':') |
| 3072 | { |
| 3073 | /* Assume this is the property list form. */ |
| 3074 | while (CONSP (prop) && CONSP (XCDR (prop))) |
| 3075 | { |
| 3076 | Lisp_Object keyword = XCAR (prop); |
| 3077 | Lisp_Object value = XCAR (XCDR (prop)); |
| 3078 | |
| 3079 | if (EQ (keyword, QCfamily)) |
| 3080 | { |
| 3081 | if (STRINGP (value)) |
| 3082 | to[LFACE_FAMILY_INDEX] = value; |
| 3083 | else |
| 3084 | add_to_log ("Illegal face font family", value, Qnil); |
| 3085 | } |
| 3086 | else if (EQ (keyword, QCheight)) |
| 3087 | { |
| 3088 | if (INTEGERP (value)) |
| 3089 | to[LFACE_HEIGHT_INDEX] = value; |
| 3090 | else |
| 3091 | add_to_log ("Illegal face font height", value, Qnil); |
| 3092 | } |
| 3093 | else if (EQ (keyword, QCweight)) |
| 3094 | { |
| 3095 | if (SYMBOLP (value) |
| 3096 | && face_numeric_weight (value) >= 0) |
| 3097 | to[LFACE_WEIGHT_INDEX] = value; |
| 3098 | else |
| 3099 | add_to_log ("Illegal face weight", value, Qnil); |
| 3100 | } |
| 3101 | else if (EQ (keyword, QCslant)) |
| 3102 | { |
| 3103 | if (SYMBOLP (value) |
| 3104 | && face_numeric_slant (value) >= 0) |
| 3105 | to[LFACE_SLANT_INDEX] = value; |
| 3106 | else |
| 3107 | add_to_log ("Illegal face slant", value, Qnil); |
| 3108 | } |
| 3109 | else if (EQ (keyword, QCunderline)) |
| 3110 | { |
| 3111 | if (EQ (value, Qt) |
| 3112 | || NILP (value) |
| 3113 | || STRINGP (value)) |
| 3114 | to[LFACE_UNDERLINE_INDEX] = value; |
| 3115 | else |
| 3116 | add_to_log ("Illegal face underline", value, Qnil); |
| 3117 | } |
| 3118 | else if (EQ (keyword, QCoverline)) |
| 3119 | { |
| 3120 | if (EQ (value, Qt) |
| 3121 | || NILP (value) |
| 3122 | || STRINGP (value)) |
| 3123 | to[LFACE_OVERLINE_INDEX] = value; |
| 3124 | else |
| 3125 | add_to_log ("Illegal face overline", value, Qnil); |
| 3126 | } |
| 3127 | else if (EQ (keyword, QCstrike_through)) |
| 3128 | { |
| 3129 | if (EQ (value, Qt) |
| 3130 | || NILP (value) |
| 3131 | || STRINGP (value)) |
| 3132 | to[LFACE_STRIKE_THROUGH_INDEX] = value; |
| 3133 | else |
| 3134 | add_to_log ("Illegal face strike-through", value, Qnil); |
| 3135 | } |
| 3136 | else if (EQ (keyword, QCbox)) |
| 3137 | { |
| 3138 | if (EQ (value, Qt)) |
| 3139 | value = make_number (1); |
| 3140 | if (INTEGERP (value) |
| 3141 | || STRINGP (value) |
| 3142 | || CONSP (value) |
| 3143 | || NILP (value)) |
| 3144 | to[LFACE_BOX_INDEX] = value; |
| 3145 | else |
| 3146 | add_to_log ("Illegal face box", value, Qnil); |
| 3147 | } |
| 3148 | else if (EQ (keyword, QCinverse_video) |
| 3149 | || EQ (keyword, QCreverse_video)) |
| 3150 | { |
| 3151 | if (EQ (value, Qt) || NILP (value)) |
| 3152 | to[LFACE_INVERSE_INDEX] = value; |
| 3153 | else |
| 3154 | add_to_log ("Illegal face inverse-video", value, Qnil); |
| 3155 | } |
| 3156 | else if (EQ (keyword, QCforeground)) |
| 3157 | { |
| 3158 | if (STRINGP (value)) |
| 3159 | to[LFACE_FOREGROUND_INDEX] = value; |
| 3160 | else |
| 3161 | add_to_log ("Illegal face foreground", value, Qnil); |
| 3162 | } |
| 3163 | else if (EQ (keyword, QCbackground)) |
| 3164 | { |
| 3165 | if (STRINGP (value)) |
| 3166 | to[LFACE_BACKGROUND_INDEX] = value; |
| 3167 | else |
| 3168 | add_to_log ("Illegal face background", value, Qnil); |
| 3169 | } |
| 3170 | else if (EQ (keyword, QCstipple)) |
| 3171 | { |
| 3172 | #ifdef HAVE_X_WINDOWS |
| 3173 | Lisp_Object pixmap_p = Fbitmap_spec_p (value); |
| 3174 | if (!NILP (pixmap_p)) |
| 3175 | to[LFACE_STIPPLE_INDEX] = value; |
| 3176 | else |
| 3177 | add_to_log ("Illegal face stipple", value, Qnil); |
| 3178 | #endif |
| 3179 | } |
| 3180 | else if (EQ (keyword, QCwidth)) |
| 3181 | { |
| 3182 | if (SYMBOLP (value) |
| 3183 | && face_numeric_swidth (value) >= 0) |
| 3184 | to[LFACE_SWIDTH_INDEX] = value; |
| 3185 | else |
| 3186 | add_to_log ("Illegal face width", value, Qnil); |
| 3187 | } |
| 3188 | else |
| 3189 | add_to_log ("Invalid attribute %s in face property", |
| 3190 | keyword, Qnil); |
| 3191 | |
| 3192 | prop = XCDR (XCDR (prop)); |
| 3193 | } |
| 3194 | } |
| 3195 | else |
| 3196 | { |
| 3197 | /* This is a list of face specs. Specifications at the |
| 3198 | beginning of the list take precedence over later |
| 3199 | specifications, so we have to merge starting with the |
| 3200 | last specification. */ |
| 3201 | Lisp_Object next = XCDR (prop); |
| 3202 | if (!NILP (next)) |
| 3203 | merge_face_vector_with_property (f, to, next); |
| 3204 | merge_face_vector_with_property (f, to, first); |
| 3205 | } |
| 3206 | } |
| 3207 | else |
| 3208 | { |
| 3209 | /* PROP ought to be a face name. */ |
| 3210 | Lisp_Object lface = lface_from_face_name (f, prop, 0); |
| 3211 | if (NILP (lface)) |
| 3212 | add_to_log ("Invalid face text property value: %s", prop, Qnil); |
| 3213 | else |
| 3214 | merge_face_vectors (XVECTOR (lface)->contents, to); |
| 3215 | } |
| 3216 | } |
| 3217 | |
| 3218 | |
| 3219 | DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face, |
| 3220 | Sinternal_make_lisp_face, 1, 2, 0, |
| 3221 | "Make FACE, a symbol, a Lisp face with all attributes nil.\n\ |
| 3222 | If FACE was not known as a face before, create a new one.\n\ |
| 3223 | If optional argument FRAME is specified, make a frame-local face\n\ |
| 3224 | for that frame. Otherwise operate on the global face definition.\n\ |
| 3225 | Value is a vector of face attributes.") |
| 3226 | (face, frame) |
| 3227 | Lisp_Object face, frame; |
| 3228 | { |
| 3229 | Lisp_Object global_lface, lface; |
| 3230 | struct frame *f; |
| 3231 | int i; |
| 3232 | |
| 3233 | CHECK_SYMBOL (face, 0); |
| 3234 | global_lface = lface_from_face_name (NULL, face, 0); |
| 3235 | |
| 3236 | if (!NILP (frame)) |
| 3237 | { |
| 3238 | CHECK_LIVE_FRAME (frame, 1); |
| 3239 | f = XFRAME (frame); |
| 3240 | lface = lface_from_face_name (f, face, 0); |
| 3241 | } |
| 3242 | else |
| 3243 | f = NULL, lface = Qnil; |
| 3244 | |
| 3245 | /* Add a global definition if there is none. */ |
| 3246 | if (NILP (global_lface)) |
| 3247 | { |
| 3248 | global_lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE), |
| 3249 | Qunspecified); |
| 3250 | XVECTOR (global_lface)->contents[0] = Qface; |
| 3251 | Vface_new_frame_defaults = Fcons (Fcons (face, global_lface), |
| 3252 | Vface_new_frame_defaults); |
| 3253 | |
| 3254 | /* Assign the new Lisp face a unique ID. The mapping from Lisp |
| 3255 | face id to Lisp face is given by the vector lface_id_to_name. |
| 3256 | The mapping from Lisp face to Lisp face id is given by the |
| 3257 | property `face' of the Lisp face name. */ |
| 3258 | if (next_lface_id == lface_id_to_name_size) |
| 3259 | { |
| 3260 | int new_size = max (50, 2 * lface_id_to_name_size); |
| 3261 | int sz = new_size * sizeof *lface_id_to_name; |
| 3262 | lface_id_to_name = (Lisp_Object *) xrealloc (lface_id_to_name, sz); |
| 3263 | lface_id_to_name_size = new_size; |
| 3264 | } |
| 3265 | |
| 3266 | lface_id_to_name[next_lface_id] = face; |
| 3267 | Fput (face, Qface, make_number (next_lface_id)); |
| 3268 | ++next_lface_id; |
| 3269 | } |
| 3270 | else if (f == NULL) |
| 3271 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) |
| 3272 | XVECTOR (global_lface)->contents[i] = Qunspecified; |
| 3273 | |
| 3274 | /* Add a frame-local definition. */ |
| 3275 | if (f) |
| 3276 | { |
| 3277 | if (NILP (lface)) |
| 3278 | { |
| 3279 | lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE), |
| 3280 | Qunspecified); |
| 3281 | XVECTOR (lface)->contents[0] = Qface; |
| 3282 | f->face_alist = Fcons (Fcons (face, lface), f->face_alist); |
| 3283 | } |
| 3284 | else |
| 3285 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) |
| 3286 | XVECTOR (lface)->contents[i] = Qunspecified; |
| 3287 | } |
| 3288 | else |
| 3289 | lface = global_lface; |
| 3290 | |
| 3291 | xassert (LFACEP (lface)); |
| 3292 | check_lface (lface); |
| 3293 | return lface; |
| 3294 | } |
| 3295 | |
| 3296 | |
| 3297 | DEFUN ("internal-lisp-face-p", Finternal_lisp_face_p, |
| 3298 | Sinternal_lisp_face_p, 1, 2, 0, |
| 3299 | "Return non-nil if FACE names a face.\n\ |
| 3300 | If optional second parameter FRAME is non-nil, check for the\n\ |
| 3301 | existence of a frame-local face with name FACE on that frame.\n\ |
| 3302 | Otherwise check for the existence of a global face.") |
| 3303 | (face, frame) |
| 3304 | Lisp_Object face, frame; |
| 3305 | { |
| 3306 | Lisp_Object lface; |
| 3307 | |
| 3308 | if (!NILP (frame)) |
| 3309 | { |
| 3310 | CHECK_LIVE_FRAME (frame, 1); |
| 3311 | lface = lface_from_face_name (XFRAME (frame), face, 0); |
| 3312 | } |
| 3313 | else |
| 3314 | lface = lface_from_face_name (NULL, face, 0); |
| 3315 | |
| 3316 | return lface; |
| 3317 | } |
| 3318 | |
| 3319 | |
| 3320 | DEFUN ("internal-copy-lisp-face", Finternal_copy_lisp_face, |
| 3321 | Sinternal_copy_lisp_face, 4, 4, 0, |
| 3322 | "Copy face FROM to TO.\n\ |
| 3323 | If FRAME it t, copy the global face definition of FROM to the\n\ |
| 3324 | global face definition of TO. Otherwise, copy the frame-local\n\ |
| 3325 | definition of FROM on FRAME to the frame-local definition of TO\n\ |
| 3326 | on NEW-FRAME, or FRAME if NEW-FRAME is nil.\n\ |
| 3327 | \n\ |
| 3328 | Value is TO.") |
| 3329 | (from, to, frame, new_frame) |
| 3330 | Lisp_Object from, to, frame, new_frame; |
| 3331 | { |
| 3332 | Lisp_Object lface, copy; |
| 3333 | |
| 3334 | CHECK_SYMBOL (from, 0); |
| 3335 | CHECK_SYMBOL (to, 1); |
| 3336 | if (NILP (new_frame)) |
| 3337 | new_frame = frame; |
| 3338 | |
| 3339 | if (EQ (frame, Qt)) |
| 3340 | { |
| 3341 | /* Copy global definition of FROM. We don't make copies of |
| 3342 | strings etc. because 20.2 didn't do it either. */ |
| 3343 | lface = lface_from_face_name (NULL, from, 1); |
| 3344 | copy = Finternal_make_lisp_face (to, Qnil); |
| 3345 | } |
| 3346 | else |
| 3347 | { |
| 3348 | /* Copy frame-local definition of FROM. */ |
| 3349 | CHECK_LIVE_FRAME (frame, 2); |
| 3350 | CHECK_LIVE_FRAME (new_frame, 3); |
| 3351 | lface = lface_from_face_name (XFRAME (frame), from, 1); |
| 3352 | copy = Finternal_make_lisp_face (to, new_frame); |
| 3353 | } |
| 3354 | |
| 3355 | bcopy (XVECTOR (lface)->contents, XVECTOR (copy)->contents, |
| 3356 | LFACE_VECTOR_SIZE * sizeof (Lisp_Object)); |
| 3357 | |
| 3358 | return to; |
| 3359 | } |
| 3360 | |
| 3361 | |
| 3362 | DEFUN ("internal-set-lisp-face-attribute", Finternal_set_lisp_face_attribute, |
| 3363 | Sinternal_set_lisp_face_attribute, 3, 4, 0, |
| 3364 | "Set attribute ATTR of FACE to VALUE.\n\ |
| 3365 | If optional argument FRAME is given, set the face attribute of face FACE\n\ |
| 3366 | on that frame. If FRAME is t, set the attribute of the default for face\n\ |
| 3367 | FACE (for new frames). If FRAME is omitted or nil, use the selected\n\ |
| 3368 | frame.") |
| 3369 | (face, attr, value, frame) |
| 3370 | Lisp_Object face, attr, value, frame; |
| 3371 | { |
| 3372 | Lisp_Object lface; |
| 3373 | Lisp_Object old_value = Qnil; |
| 3374 | /* Set 1 if ATTR is QCfont. */ |
| 3375 | int font_attr_p = 0; |
| 3376 | /* Set 1 if ATTR is one of font-related attributes other than QCfont. */ |
| 3377 | int font_related_attr_p = 0; |
| 3378 | |
| 3379 | CHECK_SYMBOL (face, 0); |
| 3380 | CHECK_SYMBOL (attr, 1); |
| 3381 | |
| 3382 | face = resolve_face_name (face); |
| 3383 | |
| 3384 | /* Set lface to the Lisp attribute vector of FACE. */ |
| 3385 | if (EQ (frame, Qt)) |
| 3386 | lface = lface_from_face_name (NULL, face, 1); |
| 3387 | else |
| 3388 | { |
| 3389 | if (NILP (frame)) |
| 3390 | frame = selected_frame; |
| 3391 | |
| 3392 | CHECK_LIVE_FRAME (frame, 3); |
| 3393 | lface = lface_from_face_name (XFRAME (frame), face, 0); |
| 3394 | |
| 3395 | /* If a frame-local face doesn't exist yet, create one. */ |
| 3396 | if (NILP (lface)) |
| 3397 | lface = Finternal_make_lisp_face (face, frame); |
| 3398 | } |
| 3399 | |
| 3400 | if (EQ (attr, QCfamily)) |
| 3401 | { |
| 3402 | if (!UNSPECIFIEDP (value)) |
| 3403 | { |
| 3404 | CHECK_STRING (value, 3); |
| 3405 | if (XSTRING (value)->size == 0) |
| 3406 | signal_error ("Invalid face family", value); |
| 3407 | } |
| 3408 | old_value = LFACE_FAMILY (lface); |
| 3409 | LFACE_FAMILY (lface) = value; |
| 3410 | font_related_attr_p = 1; |
| 3411 | } |
| 3412 | else if (EQ (attr, QCheight)) |
| 3413 | { |
| 3414 | if (!UNSPECIFIEDP (value)) |
| 3415 | { |
| 3416 | CHECK_NUMBER (value, 3); |
| 3417 | if (XINT (value) <= 0) |
| 3418 | signal_error ("Invalid face height", value); |
| 3419 | } |
| 3420 | old_value = LFACE_HEIGHT (lface); |
| 3421 | LFACE_HEIGHT (lface) = value; |
| 3422 | font_related_attr_p = 1; |
| 3423 | } |
| 3424 | else if (EQ (attr, QCweight)) |
| 3425 | { |
| 3426 | if (!UNSPECIFIEDP (value)) |
| 3427 | { |
| 3428 | CHECK_SYMBOL (value, 3); |
| 3429 | if (face_numeric_weight (value) < 0) |
| 3430 | signal_error ("Invalid face weight", value); |
| 3431 | } |
| 3432 | old_value = LFACE_WEIGHT (lface); |
| 3433 | LFACE_WEIGHT (lface) = value; |
| 3434 | font_related_attr_p = 1; |
| 3435 | } |
| 3436 | else if (EQ (attr, QCslant)) |
| 3437 | { |
| 3438 | if (!UNSPECIFIEDP (value)) |
| 3439 | { |
| 3440 | CHECK_SYMBOL (value, 3); |
| 3441 | if (face_numeric_slant (value) < 0) |
| 3442 | signal_error ("Invalid face slant", value); |
| 3443 | } |
| 3444 | old_value = LFACE_SLANT (lface); |
| 3445 | LFACE_SLANT (lface) = value; |
| 3446 | font_related_attr_p = 1; |
| 3447 | } |
| 3448 | else if (EQ (attr, QCunderline)) |
| 3449 | { |
| 3450 | if (!UNSPECIFIEDP (value)) |
| 3451 | if ((SYMBOLP (value) |
| 3452 | && !EQ (value, Qt) |
| 3453 | && !EQ (value, Qnil)) |
| 3454 | /* Underline color. */ |
| 3455 | || (STRINGP (value) |
| 3456 | && XSTRING (value)->size == 0)) |
| 3457 | signal_error ("Invalid face underline", value); |
| 3458 | |
| 3459 | old_value = LFACE_UNDERLINE (lface); |
| 3460 | LFACE_UNDERLINE (lface) = value; |
| 3461 | } |
| 3462 | else if (EQ (attr, QCoverline)) |
| 3463 | { |
| 3464 | if (!UNSPECIFIEDP (value)) |
| 3465 | if ((SYMBOLP (value) |
| 3466 | && !EQ (value, Qt) |
| 3467 | && !EQ (value, Qnil)) |
| 3468 | /* Overline color. */ |
| 3469 | || (STRINGP (value) |
| 3470 | && XSTRING (value)->size == 0)) |
| 3471 | signal_error ("Invalid face overline", value); |
| 3472 | |
| 3473 | old_value = LFACE_OVERLINE (lface); |
| 3474 | LFACE_OVERLINE (lface) = value; |
| 3475 | } |
| 3476 | else if (EQ (attr, QCstrike_through)) |
| 3477 | { |
| 3478 | if (!UNSPECIFIEDP (value)) |
| 3479 | if ((SYMBOLP (value) |
| 3480 | && !EQ (value, Qt) |
| 3481 | && !EQ (value, Qnil)) |
| 3482 | /* Strike-through color. */ |
| 3483 | || (STRINGP (value) |
| 3484 | && XSTRING (value)->size == 0)) |
| 3485 | signal_error ("Invalid face strike-through", value); |
| 3486 | |
| 3487 | old_value = LFACE_STRIKE_THROUGH (lface); |
| 3488 | LFACE_STRIKE_THROUGH (lface) = value; |
| 3489 | } |
| 3490 | else if (EQ (attr, QCbox)) |
| 3491 | { |
| 3492 | int valid_p; |
| 3493 | |
| 3494 | /* Allow t meaning a simple box of width 1 in foreground color |
| 3495 | of the face. */ |
| 3496 | if (EQ (value, Qt)) |
| 3497 | value = make_number (1); |
| 3498 | |
| 3499 | if (UNSPECIFIEDP (value)) |
| 3500 | valid_p = 1; |
| 3501 | else if (NILP (value)) |
| 3502 | valid_p = 1; |
| 3503 | else if (INTEGERP (value)) |
| 3504 | valid_p = XINT (value) > 0; |
| 3505 | else if (STRINGP (value)) |
| 3506 | valid_p = XSTRING (value)->size > 0; |
| 3507 | else if (CONSP (value)) |
| 3508 | { |
| 3509 | Lisp_Object tem; |
| 3510 | |
| 3511 | tem = value; |
| 3512 | while (CONSP (tem)) |
| 3513 | { |
| 3514 | Lisp_Object k, v; |
| 3515 | |
| 3516 | k = XCAR (tem); |
| 3517 | tem = XCDR (tem); |
| 3518 | if (!CONSP (tem)) |
| 3519 | break; |
| 3520 | v = XCAR (tem); |
| 3521 | tem = XCDR (tem); |
| 3522 | |
| 3523 | if (EQ (k, QCline_width)) |
| 3524 | { |
| 3525 | if (!INTEGERP (v) || XINT (v) <= 0) |
| 3526 | break; |
| 3527 | } |
| 3528 | else if (EQ (k, QCcolor)) |
| 3529 | { |
| 3530 | if (!STRINGP (v) || XSTRING (v)->size == 0) |
| 3531 | break; |
| 3532 | } |
| 3533 | else if (EQ (k, QCstyle)) |
| 3534 | { |
| 3535 | if (!EQ (v, Qpressed_button) && !EQ (v, Qreleased_button)) |
| 3536 | break; |
| 3537 | } |
| 3538 | else |
| 3539 | break; |
| 3540 | } |
| 3541 | |
| 3542 | valid_p = NILP (tem); |
| 3543 | } |
| 3544 | else |
| 3545 | valid_p = 0; |
| 3546 | |
| 3547 | if (!valid_p) |
| 3548 | signal_error ("Invalid face box", value); |
| 3549 | |
| 3550 | old_value = LFACE_BOX (lface); |
| 3551 | LFACE_BOX (lface) = value; |
| 3552 | } |
| 3553 | else if (EQ (attr, QCinverse_video) |
| 3554 | || EQ (attr, QCreverse_video)) |
| 3555 | { |
| 3556 | if (!UNSPECIFIEDP (value)) |
| 3557 | { |
| 3558 | CHECK_SYMBOL (value, 3); |
| 3559 | if (!EQ (value, Qt) && !NILP (value)) |
| 3560 | signal_error ("Invalid inverse-video face attribute value", value); |
| 3561 | } |
| 3562 | old_value = LFACE_INVERSE (lface); |
| 3563 | LFACE_INVERSE (lface) = value; |
| 3564 | } |
| 3565 | else if (EQ (attr, QCforeground)) |
| 3566 | { |
| 3567 | if (!UNSPECIFIEDP (value)) |
| 3568 | { |
| 3569 | /* Don't check for valid color names here because it depends |
| 3570 | on the frame (display) whether the color will be valid |
| 3571 | when the face is realized. */ |
| 3572 | CHECK_STRING (value, 3); |
| 3573 | if (XSTRING (value)->size == 0) |
| 3574 | signal_error ("Empty foreground color value", value); |
| 3575 | } |
| 3576 | old_value = LFACE_FOREGROUND (lface); |
| 3577 | LFACE_FOREGROUND (lface) = value; |
| 3578 | } |
| 3579 | else if (EQ (attr, QCbackground)) |
| 3580 | { |
| 3581 | if (!UNSPECIFIEDP (value)) |
| 3582 | { |
| 3583 | /* Don't check for valid color names here because it depends |
| 3584 | on the frame (display) whether the color will be valid |
| 3585 | when the face is realized. */ |
| 3586 | CHECK_STRING (value, 3); |
| 3587 | if (XSTRING (value)->size == 0) |
| 3588 | signal_error ("Empty background color value", value); |
| 3589 | } |
| 3590 | old_value = LFACE_BACKGROUND (lface); |
| 3591 | LFACE_BACKGROUND (lface) = value; |
| 3592 | } |
| 3593 | else if (EQ (attr, QCstipple)) |
| 3594 | { |
| 3595 | #ifdef HAVE_X_WINDOWS |
| 3596 | if (!UNSPECIFIEDP (value) |
| 3597 | && !NILP (value) |
| 3598 | && NILP (Fbitmap_spec_p (value))) |
| 3599 | signal_error ("Invalid stipple attribute", value); |
| 3600 | old_value = LFACE_STIPPLE (lface); |
| 3601 | LFACE_STIPPLE (lface) = value; |
| 3602 | #endif /* HAVE_X_WINDOWS */ |
| 3603 | } |
| 3604 | else if (EQ (attr, QCwidth)) |
| 3605 | { |
| 3606 | if (!UNSPECIFIEDP (value)) |
| 3607 | { |
| 3608 | CHECK_SYMBOL (value, 3); |
| 3609 | if (face_numeric_swidth (value) < 0) |
| 3610 | signal_error ("Invalid face width", value); |
| 3611 | } |
| 3612 | old_value = LFACE_SWIDTH (lface); |
| 3613 | LFACE_SWIDTH (lface) = value; |
| 3614 | font_related_attr_p = 1; |
| 3615 | } |
| 3616 | else if (EQ (attr, QCfont)) |
| 3617 | { |
| 3618 | #ifdef HAVE_WINDOW_SYSTEM |
| 3619 | /* Set font-related attributes of the Lisp face from an |
| 3620 | XLFD font name. */ |
| 3621 | struct frame *f; |
| 3622 | Lisp_Object tmp; |
| 3623 | |
| 3624 | CHECK_STRING (value, 3); |
| 3625 | if (EQ (frame, Qt)) |
| 3626 | f = SELECTED_FRAME (); |
| 3627 | else |
| 3628 | f = check_x_frame (frame); |
| 3629 | |
| 3630 | /* VALUE may be a fontset name or an alias of fontset. In such |
| 3631 | a case, use the base fontset name. */ |
| 3632 | tmp = Fquery_fontset (value, Qnil); |
| 3633 | if (!NILP (tmp)) |
| 3634 | value = tmp; |
| 3635 | |
| 3636 | if (!set_lface_from_font_name (f, lface, value, 1, 1)) |
| 3637 | signal_error ("Invalid font or fontset name", value); |
| 3638 | |
| 3639 | font_attr_p = 1; |
| 3640 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3641 | } |
| 3642 | else if (EQ (attr, QCbold)) |
| 3643 | { |
| 3644 | old_value = LFACE_WEIGHT (lface); |
| 3645 | LFACE_WEIGHT (lface) = NILP (value) ? Qnormal : Qbold; |
| 3646 | font_related_attr_p = 1; |
| 3647 | } |
| 3648 | else if (EQ (attr, QCitalic)) |
| 3649 | { |
| 3650 | old_value = LFACE_SLANT (lface); |
| 3651 | LFACE_SLANT (lface) = NILP (value) ? Qnormal : Qitalic; |
| 3652 | font_related_attr_p = 1; |
| 3653 | } |
| 3654 | else |
| 3655 | signal_error ("Invalid face attribute name", attr); |
| 3656 | |
| 3657 | if (font_related_attr_p |
| 3658 | && !UNSPECIFIEDP (value)) |
| 3659 | /* If a font-related attribute other than QCfont is specified, the |
| 3660 | original `font' attribute nor that of default face is useless |
| 3661 | to determine a new font. Thus, we set it to nil so that font |
| 3662 | selection mechanism doesn't use it. */ |
| 3663 | LFACE_FONT (lface) = Qnil; |
| 3664 | |
| 3665 | /* Changing a named face means that all realized faces depending on |
| 3666 | that face are invalid. Since we cannot tell which realized faces |
| 3667 | depend on the face, make sure they are all removed. This is done |
| 3668 | by incrementing face_change_count. The next call to |
| 3669 | init_iterator will then free realized faces. */ |
| 3670 | if (!EQ (frame, Qt) |
| 3671 | && (EQ (attr, QCfont) |
| 3672 | || NILP (Fequal (old_value, value)))) |
| 3673 | { |
| 3674 | ++face_change_count; |
| 3675 | ++windows_or_buffers_changed; |
| 3676 | } |
| 3677 | |
| 3678 | #ifdef HAVE_WINDOW_SYSTEM |
| 3679 | |
| 3680 | if (!EQ (frame, Qt) |
| 3681 | && !UNSPECIFIEDP (value) |
| 3682 | && NILP (Fequal (old_value, value))) |
| 3683 | { |
| 3684 | Lisp_Object param; |
| 3685 | |
| 3686 | param = Qnil; |
| 3687 | |
| 3688 | if (EQ (face, Qdefault)) |
| 3689 | { |
| 3690 | /* Changed font-related attributes of the `default' face are |
| 3691 | reflected in changed `font' frame parameters. */ |
| 3692 | if ((font_related_attr_p || font_attr_p) |
| 3693 | && lface_fully_specified_p (XVECTOR (lface)->contents)) |
| 3694 | set_font_frame_param (frame, lface); |
| 3695 | else if (EQ (attr, QCforeground)) |
| 3696 | param = Qforeground_color; |
| 3697 | else if (EQ (attr, QCbackground)) |
| 3698 | param = Qbackground_color; |
| 3699 | } |
| 3700 | #ifndef WINDOWSNT |
| 3701 | else if (EQ (face, Qscroll_bar)) |
| 3702 | { |
| 3703 | /* Changing the colors of `scroll-bar' sets frame parameters |
| 3704 | `scroll-bar-foreground' and `scroll-bar-background'. */ |
| 3705 | if (EQ (attr, QCforeground)) |
| 3706 | param = Qscroll_bar_foreground; |
| 3707 | else if (EQ (attr, QCbackground)) |
| 3708 | param = Qscroll_bar_background; |
| 3709 | } |
| 3710 | #endif |
| 3711 | else if (EQ (face, Qborder)) |
| 3712 | { |
| 3713 | /* Changing background color of `border' sets frame parameter |
| 3714 | `border-color'. */ |
| 3715 | if (EQ (attr, QCbackground)) |
| 3716 | param = Qborder_color; |
| 3717 | } |
| 3718 | else if (EQ (face, Qcursor)) |
| 3719 | { |
| 3720 | /* Changing background color of `cursor' sets frame parameter |
| 3721 | `cursor-color'. */ |
| 3722 | if (EQ (attr, QCbackground)) |
| 3723 | param = Qcursor_color; |
| 3724 | } |
| 3725 | else if (EQ (face, Qmouse)) |
| 3726 | { |
| 3727 | /* Changing background color of `mouse' sets frame parameter |
| 3728 | `mouse-color'. */ |
| 3729 | if (EQ (attr, QCbackground)) |
| 3730 | param = Qmouse_color; |
| 3731 | } |
| 3732 | |
| 3733 | if (!NILP (param)) |
| 3734 | Fmodify_frame_parameters (frame, Fcons (Fcons (param, value), Qnil)); |
| 3735 | } |
| 3736 | |
| 3737 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3738 | |
| 3739 | return face; |
| 3740 | } |
| 3741 | |
| 3742 | |
| 3743 | #ifdef HAVE_WINDOW_SYSTEM |
| 3744 | |
| 3745 | /* Set the `font' frame parameter of FRAME determined from `default' |
| 3746 | face attributes LFACE. If a face or fontset name is explicitely |
| 3747 | specfied in LFACE, use it as is. Otherwise, determine a font name |
| 3748 | from the other font-related atrributes of LFACE. In that case, if |
| 3749 | there's no matching font, signals an error. */ |
| 3750 | |
| 3751 | static void |
| 3752 | set_font_frame_param (frame, lface) |
| 3753 | Lisp_Object frame, lface; |
| 3754 | { |
| 3755 | struct frame *f = XFRAME (frame); |
| 3756 | Lisp_Object font_name; |
| 3757 | char *font; |
| 3758 | |
| 3759 | if (STRINGP (LFACE_FONT (lface))) |
| 3760 | font_name = LFACE_FONT (lface); |
| 3761 | else |
| 3762 | { |
| 3763 | /* Choose a font name that reflects LFACE's attributes and has |
| 3764 | the registry and encoding pattern specified in the default |
| 3765 | fontset (3rd arg: -1) for ASCII characters (4th arg: 0). */ |
| 3766 | font = choose_face_font (f, XVECTOR (lface)->contents, -1, 0); |
| 3767 | if (!font) |
| 3768 | error ("No font matches the specified attribute"); |
| 3769 | font_name = build_string (font); |
| 3770 | xfree (font); |
| 3771 | } |
| 3772 | store_frame_param (f, Qfont, font_name); |
| 3773 | } |
| 3774 | |
| 3775 | |
| 3776 | /* Update the corresponding face when frame parameter PARAM on frame F |
| 3777 | has been assigned the value NEW_VALUE. */ |
| 3778 | |
| 3779 | void |
| 3780 | update_face_from_frame_parameter (f, param, new_value) |
| 3781 | struct frame *f; |
| 3782 | Lisp_Object param, new_value; |
| 3783 | { |
| 3784 | Lisp_Object lface; |
| 3785 | |
| 3786 | /* If there are no faces yet, give up. This is the case when called |
| 3787 | from Fx_create_frame, and we do the necessary things later in |
| 3788 | face-set-after-frame-defaults. */ |
| 3789 | if (NILP (f->face_alist)) |
| 3790 | return; |
| 3791 | |
| 3792 | if (EQ (param, Qforeground_color)) |
| 3793 | { |
| 3794 | lface = lface_from_face_name (f, Qdefault, 1); |
| 3795 | LFACE_FOREGROUND (lface) = (STRINGP (new_value) |
| 3796 | ? new_value : Qunspecified); |
| 3797 | realize_basic_faces (f); |
| 3798 | } |
| 3799 | else if (EQ (param, Qbackground_color)) |
| 3800 | { |
| 3801 | Lisp_Object frame; |
| 3802 | |
| 3803 | /* Changing the background color might change the background |
| 3804 | mode, so that we have to load new defface specs. Call |
| 3805 | frame-update-face-colors to do that. */ |
| 3806 | XSETFRAME (frame, f); |
| 3807 | call1 (Qframe_update_face_colors, frame); |
| 3808 | |
| 3809 | lface = lface_from_face_name (f, Qdefault, 1); |
| 3810 | LFACE_BACKGROUND (lface) = (STRINGP (new_value) |
| 3811 | ? new_value : Qunspecified); |
| 3812 | realize_basic_faces (f); |
| 3813 | } |
| 3814 | if (EQ (param, Qborder_color)) |
| 3815 | { |
| 3816 | lface = lface_from_face_name (f, Qborder, 1); |
| 3817 | LFACE_BACKGROUND (lface) = (STRINGP (new_value) |
| 3818 | ? new_value : Qunspecified); |
| 3819 | } |
| 3820 | else if (EQ (param, Qcursor_color)) |
| 3821 | { |
| 3822 | lface = lface_from_face_name (f, Qcursor, 1); |
| 3823 | LFACE_BACKGROUND (lface) = (STRINGP (new_value) |
| 3824 | ? new_value : Qunspecified); |
| 3825 | } |
| 3826 | else if (EQ (param, Qmouse_color)) |
| 3827 | { |
| 3828 | lface = lface_from_face_name (f, Qmouse, 1); |
| 3829 | LFACE_BACKGROUND (lface) = (STRINGP (new_value) |
| 3830 | ? new_value : Qunspecified); |
| 3831 | } |
| 3832 | } |
| 3833 | |
| 3834 | |
| 3835 | /* Get the value of X resource RESOURCE, class CLASS for the display |
| 3836 | of frame FRAME. This is here because ordinary `x-get-resource' |
| 3837 | doesn't take a frame argument. */ |
| 3838 | |
| 3839 | DEFUN ("internal-face-x-get-resource", Finternal_face_x_get_resource, |
| 3840 | Sinternal_face_x_get_resource, 3, 3, 0, "") |
| 3841 | (resource, class, frame) |
| 3842 | Lisp_Object resource, class, frame; |
| 3843 | { |
| 3844 | Lisp_Object value = Qnil; |
| 3845 | #ifndef WINDOWSNT |
| 3846 | CHECK_STRING (resource, 0); |
| 3847 | CHECK_STRING (class, 1); |
| 3848 | CHECK_LIVE_FRAME (frame, 2); |
| 3849 | BLOCK_INPUT; |
| 3850 | value = display_x_get_resource (FRAME_X_DISPLAY_INFO (XFRAME (frame)), |
| 3851 | resource, class, Qnil, Qnil); |
| 3852 | UNBLOCK_INPUT; |
| 3853 | #endif |
| 3854 | return value; |
| 3855 | } |
| 3856 | |
| 3857 | |
| 3858 | /* Return resource string VALUE as a boolean value, i.e. nil, or t. |
| 3859 | If VALUE is "on" or "true", return t. If VALUE is "off" or |
| 3860 | "false", return nil. Otherwise, if SIGNAL_P is non-zero, signal an |
| 3861 | error; if SIGNAL_P is zero, return 0. */ |
| 3862 | |
| 3863 | static Lisp_Object |
| 3864 | face_boolean_x_resource_value (value, signal_p) |
| 3865 | Lisp_Object value; |
| 3866 | int signal_p; |
| 3867 | { |
| 3868 | Lisp_Object result = make_number (0); |
| 3869 | |
| 3870 | xassert (STRINGP (value)); |
| 3871 | |
| 3872 | if (xstricmp (XSTRING (value)->data, "on") == 0 |
| 3873 | || xstricmp (XSTRING (value)->data, "true") == 0) |
| 3874 | result = Qt; |
| 3875 | else if (xstricmp (XSTRING (value)->data, "off") == 0 |
| 3876 | || xstricmp (XSTRING (value)->data, "false") == 0) |
| 3877 | result = Qnil; |
| 3878 | else if (xstricmp (XSTRING (value)->data, "unspecified") == 0) |
| 3879 | result = Qunspecified; |
| 3880 | else if (signal_p) |
| 3881 | signal_error ("Invalid face attribute value from X resource", value); |
| 3882 | |
| 3883 | return result; |
| 3884 | } |
| 3885 | |
| 3886 | |
| 3887 | DEFUN ("internal-set-lisp-face-attribute-from-resource", |
| 3888 | Finternal_set_lisp_face_attribute_from_resource, |
| 3889 | Sinternal_set_lisp_face_attribute_from_resource, |
| 3890 | 3, 4, 0, "") |
| 3891 | (face, attr, value, frame) |
| 3892 | Lisp_Object face, attr, value, frame; |
| 3893 | { |
| 3894 | CHECK_SYMBOL (face, 0); |
| 3895 | CHECK_SYMBOL (attr, 1); |
| 3896 | CHECK_STRING (value, 2); |
| 3897 | |
| 3898 | if (xstricmp (XSTRING (value)->data, "unspecified") == 0) |
| 3899 | value = Qunspecified; |
| 3900 | else if (EQ (attr, QCheight)) |
| 3901 | { |
| 3902 | value = Fstring_to_number (value, make_number (10)); |
| 3903 | if (XINT (value) <= 0) |
| 3904 | signal_error ("Invalid face height from X resource", value); |
| 3905 | } |
| 3906 | else if (EQ (attr, QCbold) || EQ (attr, QCitalic)) |
| 3907 | value = face_boolean_x_resource_value (value, 1); |
| 3908 | else if (EQ (attr, QCweight) || EQ (attr, QCslant) || EQ (attr, QCwidth)) |
| 3909 | value = intern (XSTRING (value)->data); |
| 3910 | else if (EQ (attr, QCreverse_video) || EQ (attr, QCinverse_video)) |
| 3911 | value = face_boolean_x_resource_value (value, 1); |
| 3912 | else if (EQ (attr, QCunderline) |
| 3913 | || EQ (attr, QCoverline) |
| 3914 | || EQ (attr, QCstrike_through) |
| 3915 | || EQ (attr, QCbox)) |
| 3916 | { |
| 3917 | Lisp_Object boolean_value; |
| 3918 | |
| 3919 | /* If the result of face_boolean_x_resource_value is t or nil, |
| 3920 | VALUE does NOT specify a color. */ |
| 3921 | boolean_value = face_boolean_x_resource_value (value, 0); |
| 3922 | if (SYMBOLP (boolean_value)) |
| 3923 | value = boolean_value; |
| 3924 | } |
| 3925 | |
| 3926 | return Finternal_set_lisp_face_attribute (face, attr, value, frame); |
| 3927 | } |
| 3928 | |
| 3929 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3930 | |
| 3931 | \f |
| 3932 | #ifdef HAVE_X_WINDOWS |
| 3933 | /*********************************************************************** |
| 3934 | Menu face |
| 3935 | ***********************************************************************/ |
| 3936 | |
| 3937 | #ifdef USE_X_TOOLKIT |
| 3938 | |
| 3939 | /* Structure used to pass X resources to functions called via |
| 3940 | XtApplyToWidgets. */ |
| 3941 | |
| 3942 | struct x_resources |
| 3943 | { |
| 3944 | Arg *av; |
| 3945 | int ac; |
| 3946 | }; |
| 3947 | |
| 3948 | |
| 3949 | #ifdef USE_MOTIF |
| 3950 | |
| 3951 | static void xm_apply_resources P_ ((Widget, XtPointer)); |
| 3952 | static void xm_set_menu_resources_from_menu_face P_ ((struct frame *, Widget)); |
| 3953 | |
| 3954 | |
| 3955 | /* Set widget W's X resources from P which points to an x_resources |
| 3956 | structure. If W is a cascade button, apply resources to W's |
| 3957 | submenu. */ |
| 3958 | |
| 3959 | static void |
| 3960 | xm_apply_resources (w, p) |
| 3961 | Widget w; |
| 3962 | XtPointer p; |
| 3963 | { |
| 3964 | Widget submenu = 0; |
| 3965 | struct x_resources *res = (struct x_resources *) p; |
| 3966 | |
| 3967 | XtSetValues (w, res->av, res->ac); |
| 3968 | XtVaGetValues (w, XmNsubMenuId, &submenu, NULL); |
| 3969 | if (submenu) |
| 3970 | { |
| 3971 | XtSetValues (submenu, res->av, res->ac); |
| 3972 | XtApplyToWidgets (submenu, xm_apply_resources, p); |
| 3973 | } |
| 3974 | } |
| 3975 | |
| 3976 | |
| 3977 | /* Set X resources of menu-widget WIDGET on frame F from face `menu'. |
| 3978 | This is the LessTif/Motif version. As of LessTif 0.88 it has the |
| 3979 | following problems: |
| 3980 | |
| 3981 | 1. Setting the XmNfontList resource leads to an infinite loop |
| 3982 | somewhere in LessTif. */ |
| 3983 | |
| 3984 | static void |
| 3985 | xm_set_menu_resources_from_menu_face (f, widget) |
| 3986 | struct frame *f; |
| 3987 | Widget widget; |
| 3988 | { |
| 3989 | struct face *face; |
| 3990 | Lisp_Object lface; |
| 3991 | Arg av[3]; |
| 3992 | int ac = 0; |
| 3993 | XmFontList fl = 0; |
| 3994 | |
| 3995 | lface = lface_from_face_name (f, Qmenu, 1); |
| 3996 | face = FACE_FROM_ID (f, MENU_FACE_ID); |
| 3997 | |
| 3998 | if (!UNSPECIFIEDP (LFACE_FOREGROUND (lface))) |
| 3999 | { |
| 4000 | XtSetArg (av[ac], XmNforeground, face->foreground); |
| 4001 | ++ac; |
| 4002 | } |
| 4003 | |
| 4004 | if (!UNSPECIFIEDP (LFACE_BACKGROUND (lface))) |
| 4005 | { |
| 4006 | XtSetArg (av[ac], XmNbackground, face->background); |
| 4007 | ++ac; |
| 4008 | } |
| 4009 | |
| 4010 | /* If any font-related attribute of `menu' is set, set the font. */ |
| 4011 | if (face->font |
| 4012 | && (!UNSPECIFIEDP (LFACE_FAMILY (lface)) |
| 4013 | || !UNSPECIFIEDP (LFACE_SWIDTH (lface)) |
| 4014 | || !UNSPECIFIEDP (LFACE_WEIGHT (lface)) |
| 4015 | || !UNSPECIFIEDP (LFACE_SLANT (lface)) |
| 4016 | || !UNSPECIFIEDP (LFACE_HEIGHT (lface)))) |
| 4017 | { |
| 4018 | #if 0 /* Setting the font leads to an infinite loop somewhere |
| 4019 | in LessTif during geometry computation. */ |
| 4020 | XmFontListEntry fe; |
| 4021 | fe = XmFontListEntryCreate ("menu_font", XmFONT_IS_FONT, face->font); |
| 4022 | fl = XmFontListAppendEntry (NULL, fe); |
| 4023 | XtSetArg (av[ac], XmNfontList, fl); |
| 4024 | ++ac; |
| 4025 | #endif |
| 4026 | } |
| 4027 | |
| 4028 | xassert (ac <= sizeof av / sizeof *av); |
| 4029 | |
| 4030 | if (ac) |
| 4031 | { |
| 4032 | struct x_resources res; |
| 4033 | |
| 4034 | XtSetValues (widget, av, ac); |
| 4035 | res.av = av, res.ac = ac; |
| 4036 | XtApplyToWidgets (widget, xm_apply_resources, &res); |
| 4037 | if (fl) |
| 4038 | XmFontListFree (fl); |
| 4039 | } |
| 4040 | } |
| 4041 | |
| 4042 | |
| 4043 | #endif /* USE_MOTIF */ |
| 4044 | |
| 4045 | #ifdef USE_LUCID |
| 4046 | |
| 4047 | static void xl_apply_resources P_ ((Widget, XtPointer)); |
| 4048 | static void xl_set_menu_resources_from_menu_face P_ ((struct frame *, Widget)); |
| 4049 | |
| 4050 | |
| 4051 | /* Set widget W's resources from P which points to an x_resources |
| 4052 | structure. */ |
| 4053 | |
| 4054 | static void |
| 4055 | xl_apply_resources (widget, p) |
| 4056 | Widget widget; |
| 4057 | XtPointer p; |
| 4058 | { |
| 4059 | struct x_resources *res = (struct x_resources *) p; |
| 4060 | XtSetValues (widget, res->av, res->ac); |
| 4061 | } |
| 4062 | |
| 4063 | |
| 4064 | /* On frame F, set X resources of menu-widget WIDGET from face `menu'. |
| 4065 | This is the Lucid version. */ |
| 4066 | |
| 4067 | static void |
| 4068 | xl_set_menu_resources_from_menu_face (f, widget) |
| 4069 | struct frame *f; |
| 4070 | Widget widget; |
| 4071 | { |
| 4072 | struct face *face; |
| 4073 | Lisp_Object lface; |
| 4074 | Arg av[3]; |
| 4075 | int ac = 0; |
| 4076 | |
| 4077 | lface = lface_from_face_name (f, Qmenu, 1); |
| 4078 | face = FACE_FROM_ID (f, MENU_FACE_ID); |
| 4079 | |
| 4080 | if (!UNSPECIFIEDP (LFACE_FOREGROUND (lface))) |
| 4081 | { |
| 4082 | XtSetArg (av[ac], XtNforeground, face->foreground); |
| 4083 | ++ac; |
| 4084 | } |
| 4085 | |
| 4086 | if (!UNSPECIFIEDP (LFACE_BACKGROUND (lface))) |
| 4087 | { |
| 4088 | XtSetArg (av[ac], XtNbackground, face->background); |
| 4089 | ++ac; |
| 4090 | } |
| 4091 | |
| 4092 | if (face->font |
| 4093 | && (!UNSPECIFIEDP (LFACE_FAMILY (lface)) |
| 4094 | || !UNSPECIFIEDP (LFACE_SWIDTH (lface)) |
| 4095 | || !UNSPECIFIEDP (LFACE_WEIGHT (lface)) |
| 4096 | || !UNSPECIFIEDP (LFACE_SLANT (lface)) |
| 4097 | || !UNSPECIFIEDP (LFACE_HEIGHT (lface)))) |
| 4098 | { |
| 4099 | XtSetArg (av[ac], XtNfont, face->font); |
| 4100 | ++ac; |
| 4101 | } |
| 4102 | |
| 4103 | if (ac) |
| 4104 | { |
| 4105 | struct x_resources res; |
| 4106 | |
| 4107 | XtSetValues (widget, av, ac); |
| 4108 | |
| 4109 | /* We must do children here in case we're handling a pop-up menu |
| 4110 | in which case WIDGET is a popup shell. XtApplyToWidgets |
| 4111 | is a function from lwlib. */ |
| 4112 | res.av = av, res.ac = ac; |
| 4113 | XtApplyToWidgets (widget, xl_apply_resources, &res); |
| 4114 | } |
| 4115 | } |
| 4116 | |
| 4117 | #endif /* USE_LUCID */ |
| 4118 | |
| 4119 | |
| 4120 | /* On frame F, set X resources of menu-widget WIDGET from face `menu'. */ |
| 4121 | |
| 4122 | void |
| 4123 | x_set_menu_resources_from_menu_face (f, widget) |
| 4124 | struct frame *f; |
| 4125 | Widget widget; |
| 4126 | { |
| 4127 | /* Realized faces may have been removed on frame F, e.g. because of |
| 4128 | face attribute changes. Recompute them, if necessary, since we |
| 4129 | will need the `menu' face. */ |
| 4130 | if (f->face_cache->used == 0) |
| 4131 | recompute_basic_faces (f); |
| 4132 | |
| 4133 | #ifdef USE_LUCID |
| 4134 | xl_set_menu_resources_from_menu_face (f, widget); |
| 4135 | #endif |
| 4136 | #ifdef USE_MOTIF |
| 4137 | xm_set_menu_resources_from_menu_face (f, widget); |
| 4138 | #endif |
| 4139 | } |
| 4140 | |
| 4141 | #endif /* USE_X_TOOLKIT */ |
| 4142 | |
| 4143 | #endif /* HAVE_X_WINDOWS */ |
| 4144 | |
| 4145 | |
| 4146 | |
| 4147 | DEFUN ("internal-get-lisp-face-attribute", Finternal_get_lisp_face_attribute, |
| 4148 | Sinternal_get_lisp_face_attribute, |
| 4149 | 2, 3, 0, |
| 4150 | "Return face attribute KEYWORD of face SYMBOL.\n\ |
| 4151 | If SYMBOL does not name a valid Lisp face or KEYWORD isn't a valid\n\ |
| 4152 | face attribute name, signal an error.\n\ |
| 4153 | If the optional argument FRAME is given, report on face FACE in that\n\ |
| 4154 | frame. If FRAME is t, report on the defaults for face FACE (for new\n\ |
| 4155 | frames). If FRAME is omitted or nil, use the selected frame.") |
| 4156 | (symbol, keyword, frame) |
| 4157 | Lisp_Object symbol, keyword, frame; |
| 4158 | { |
| 4159 | Lisp_Object lface, value = Qnil; |
| 4160 | |
| 4161 | CHECK_SYMBOL (symbol, 0); |
| 4162 | CHECK_SYMBOL (keyword, 1); |
| 4163 | |
| 4164 | if (EQ (frame, Qt)) |
| 4165 | lface = lface_from_face_name (NULL, symbol, 1); |
| 4166 | else |
| 4167 | { |
| 4168 | if (NILP (frame)) |
| 4169 | frame = selected_frame; |
| 4170 | CHECK_LIVE_FRAME (frame, 2); |
| 4171 | lface = lface_from_face_name (XFRAME (frame), symbol, 1); |
| 4172 | } |
| 4173 | |
| 4174 | if (EQ (keyword, QCfamily)) |
| 4175 | value = LFACE_FAMILY (lface); |
| 4176 | else if (EQ (keyword, QCheight)) |
| 4177 | value = LFACE_HEIGHT (lface); |
| 4178 | else if (EQ (keyword, QCweight)) |
| 4179 | value = LFACE_WEIGHT (lface); |
| 4180 | else if (EQ (keyword, QCslant)) |
| 4181 | value = LFACE_SLANT (lface); |
| 4182 | else if (EQ (keyword, QCunderline)) |
| 4183 | value = LFACE_UNDERLINE (lface); |
| 4184 | else if (EQ (keyword, QCoverline)) |
| 4185 | value = LFACE_OVERLINE (lface); |
| 4186 | else if (EQ (keyword, QCstrike_through)) |
| 4187 | value = LFACE_STRIKE_THROUGH (lface); |
| 4188 | else if (EQ (keyword, QCbox)) |
| 4189 | value = LFACE_BOX (lface); |
| 4190 | else if (EQ (keyword, QCinverse_video) |
| 4191 | || EQ (keyword, QCreverse_video)) |
| 4192 | value = LFACE_INVERSE (lface); |
| 4193 | else if (EQ (keyword, QCforeground)) |
| 4194 | value = LFACE_FOREGROUND (lface); |
| 4195 | else if (EQ (keyword, QCbackground)) |
| 4196 | value = LFACE_BACKGROUND (lface); |
| 4197 | else if (EQ (keyword, QCstipple)) |
| 4198 | value = LFACE_STIPPLE (lface); |
| 4199 | else if (EQ (keyword, QCwidth)) |
| 4200 | value = LFACE_SWIDTH (lface); |
| 4201 | else if (EQ (keyword, QCfont)) |
| 4202 | value = LFACE_FONT (lface); |
| 4203 | else |
| 4204 | signal_error ("Invalid face attribute name", keyword); |
| 4205 | |
| 4206 | return value; |
| 4207 | } |
| 4208 | |
| 4209 | |
| 4210 | DEFUN ("internal-lisp-face-attribute-values", |
| 4211 | Finternal_lisp_face_attribute_values, |
| 4212 | Sinternal_lisp_face_attribute_values, 1, 1, 0, |
| 4213 | "Return a list of valid discrete values for face attribute ATTR.\n\ |
| 4214 | Value is nil if ATTR doesn't have a discrete set of valid values.") |
| 4215 | (attr) |
| 4216 | Lisp_Object attr; |
| 4217 | { |
| 4218 | Lisp_Object result = Qnil; |
| 4219 | |
| 4220 | CHECK_SYMBOL (attr, 0); |
| 4221 | |
| 4222 | if (EQ (attr, QCweight) |
| 4223 | || EQ (attr, QCslant) |
| 4224 | || EQ (attr, QCwidth)) |
| 4225 | { |
| 4226 | /* Extract permissible symbols from tables. */ |
| 4227 | struct table_entry *table; |
| 4228 | int i, dim; |
| 4229 | |
| 4230 | if (EQ (attr, QCweight)) |
| 4231 | table = weight_table, dim = DIM (weight_table); |
| 4232 | else if (EQ (attr, QCslant)) |
| 4233 | table = slant_table, dim = DIM (slant_table); |
| 4234 | else |
| 4235 | table = swidth_table, dim = DIM (swidth_table); |
| 4236 | |
| 4237 | for (i = 0; i < dim; ++i) |
| 4238 | { |
| 4239 | Lisp_Object symbol = *table[i].symbol; |
| 4240 | Lisp_Object tail = result; |
| 4241 | |
| 4242 | while (!NILP (tail) |
| 4243 | && !EQ (XCAR (tail), symbol)) |
| 4244 | tail = XCDR (tail); |
| 4245 | |
| 4246 | if (NILP (tail)) |
| 4247 | result = Fcons (symbol, result); |
| 4248 | } |
| 4249 | } |
| 4250 | else if (EQ (attr, QCunderline)) |
| 4251 | result = Fcons (Qt, Fcons (Qnil, Qnil)); |
| 4252 | else if (EQ (attr, QCoverline)) |
| 4253 | result = Fcons (Qt, Fcons (Qnil, Qnil)); |
| 4254 | else if (EQ (attr, QCstrike_through)) |
| 4255 | result = Fcons (Qt, Fcons (Qnil, Qnil)); |
| 4256 | else if (EQ (attr, QCinverse_video) || EQ (attr, QCreverse_video)) |
| 4257 | result = Fcons (Qt, Fcons (Qnil, Qnil)); |
| 4258 | |
| 4259 | return result; |
| 4260 | } |
| 4261 | |
| 4262 | |
| 4263 | DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face, |
| 4264 | Sinternal_merge_in_global_face, 2, 2, 0, |
| 4265 | "Add attributes from frame-default definition of FACE to FACE on FRAME.") |
| 4266 | (face, frame) |
| 4267 | Lisp_Object face, frame; |
| 4268 | { |
| 4269 | Lisp_Object global_lface, local_lface; |
| 4270 | CHECK_LIVE_FRAME (frame, 1); |
| 4271 | global_lface = lface_from_face_name (NULL, face, 1); |
| 4272 | local_lface = lface_from_face_name (XFRAME (frame), face, 0); |
| 4273 | if (NILP (local_lface)) |
| 4274 | local_lface = Finternal_make_lisp_face (face, frame); |
| 4275 | merge_face_vectors (XVECTOR (global_lface)->contents, |
| 4276 | XVECTOR (local_lface)->contents); |
| 4277 | return face; |
| 4278 | } |
| 4279 | |
| 4280 | |
| 4281 | /* The following function is implemented for compatibility with 20.2. |
| 4282 | The function is used in x-resolve-fonts when it is asked to |
| 4283 | return fonts with the same size as the font of a face. This is |
| 4284 | done in fontset.el. */ |
| 4285 | |
| 4286 | DEFUN ("face-font", Fface_font, Sface_font, 1, 2, 0, |
| 4287 | "Return the font name of face FACE, or nil if it is unspecified.\n\ |
| 4288 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ |
| 4289 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ |
| 4290 | The font default for a face is either nil, or a list\n\ |
| 4291 | of the form (bold), (italic) or (bold italic).\n\ |
| 4292 | If FRAME is omitted or nil, use the selected frame.") |
| 4293 | (face, frame) |
| 4294 | Lisp_Object face, frame; |
| 4295 | { |
| 4296 | if (EQ (frame, Qt)) |
| 4297 | { |
| 4298 | Lisp_Object result = Qnil; |
| 4299 | Lisp_Object lface = lface_from_face_name (NULL, face, 1); |
| 4300 | |
| 4301 | if (!UNSPECIFIEDP (LFACE_WEIGHT (lface)) |
| 4302 | && !EQ (LFACE_WEIGHT (lface), Qnormal)) |
| 4303 | result = Fcons (Qbold, result); |
| 4304 | |
| 4305 | if (!NILP (LFACE_SLANT (lface)) |
| 4306 | && !EQ (LFACE_SLANT (lface), Qnormal)) |
| 4307 | result = Fcons (Qitalic, result); |
| 4308 | |
| 4309 | return result; |
| 4310 | } |
| 4311 | else |
| 4312 | { |
| 4313 | struct frame *f = frame_or_selected_frame (frame, 1); |
| 4314 | int face_id = lookup_named_face (f, face, 0); |
| 4315 | struct face *face = FACE_FROM_ID (f, face_id); |
| 4316 | return build_string (face->font_name); |
| 4317 | } |
| 4318 | } |
| 4319 | |
| 4320 | |
| 4321 | /* Compare face vectors V1 and V2 for equality. Value is non-zero if |
| 4322 | all attributes are `equal'. Tries to be fast because this function |
| 4323 | is called quite often. */ |
| 4324 | |
| 4325 | static INLINE int |
| 4326 | lface_equal_p (v1, v2) |
| 4327 | Lisp_Object *v1, *v2; |
| 4328 | { |
| 4329 | int i, equal_p = 1; |
| 4330 | |
| 4331 | for (i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i) |
| 4332 | { |
| 4333 | Lisp_Object a = v1[i]; |
| 4334 | Lisp_Object b = v2[i]; |
| 4335 | |
| 4336 | /* Type can differ, e.g. when one attribute is unspecified, i.e. nil, |
| 4337 | and the other is specified. */ |
| 4338 | equal_p = XTYPE (a) == XTYPE (b); |
| 4339 | if (!equal_p) |
| 4340 | break; |
| 4341 | |
| 4342 | if (!EQ (a, b)) |
| 4343 | { |
| 4344 | switch (XTYPE (a)) |
| 4345 | { |
| 4346 | case Lisp_String: |
| 4347 | equal_p = (XSTRING (a)->size == XSTRING (b)->size |
| 4348 | && bcmp (XSTRING (a)->data, XSTRING (b)->data, |
| 4349 | XSTRING (a)->size) == 0); |
| 4350 | break; |
| 4351 | |
| 4352 | case Lisp_Int: |
| 4353 | case Lisp_Symbol: |
| 4354 | equal_p = 0; |
| 4355 | break; |
| 4356 | |
| 4357 | default: |
| 4358 | equal_p = !NILP (Fequal (a, b)); |
| 4359 | break; |
| 4360 | } |
| 4361 | } |
| 4362 | } |
| 4363 | |
| 4364 | return equal_p; |
| 4365 | } |
| 4366 | |
| 4367 | |
| 4368 | DEFUN ("internal-lisp-face-equal-p", Finternal_lisp_face_equal_p, |
| 4369 | Sinternal_lisp_face_equal_p, 2, 3, 0, |
| 4370 | "True if FACE1 and FACE2 are equal.\n\ |
| 4371 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ |
| 4372 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ |
| 4373 | If FRAME is omitted or nil, use the selected frame.") |
| 4374 | (face1, face2, frame) |
| 4375 | Lisp_Object face1, face2, frame; |
| 4376 | { |
| 4377 | int equal_p; |
| 4378 | struct frame *f; |
| 4379 | Lisp_Object lface1, lface2; |
| 4380 | |
| 4381 | if (EQ (frame, Qt)) |
| 4382 | f = NULL; |
| 4383 | else |
| 4384 | /* Don't use check_x_frame here because this function is called |
| 4385 | before X frames exist. At that time, if FRAME is nil, |
| 4386 | selected_frame will be used which is the frame dumped with |
| 4387 | Emacs. That frame is not an X frame. */ |
| 4388 | f = frame_or_selected_frame (frame, 2); |
| 4389 | |
| 4390 | lface1 = lface_from_face_name (NULL, face1, 1); |
| 4391 | lface2 = lface_from_face_name (NULL, face2, 1); |
| 4392 | equal_p = lface_equal_p (XVECTOR (lface1)->contents, |
| 4393 | XVECTOR (lface2)->contents); |
| 4394 | return equal_p ? Qt : Qnil; |
| 4395 | } |
| 4396 | |
| 4397 | |
| 4398 | DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p, |
| 4399 | Sinternal_lisp_face_empty_p, 1, 2, 0, |
| 4400 | "True if FACE has no attribute specified.\n\ |
| 4401 | If the optional argument FRAME is given, report on face FACE in that frame.\n\ |
| 4402 | If FRAME is t, report on the defaults for face FACE (for new frames).\n\ |
| 4403 | If FRAME is omitted or nil, use the selected frame.") |
| 4404 | (face, frame) |
| 4405 | Lisp_Object face, frame; |
| 4406 | { |
| 4407 | struct frame *f; |
| 4408 | Lisp_Object lface; |
| 4409 | int i; |
| 4410 | |
| 4411 | if (NILP (frame)) |
| 4412 | frame = selected_frame; |
| 4413 | CHECK_LIVE_FRAME (frame, 0); |
| 4414 | f = XFRAME (frame); |
| 4415 | |
| 4416 | if (EQ (frame, Qt)) |
| 4417 | lface = lface_from_face_name (NULL, face, 1); |
| 4418 | else |
| 4419 | lface = lface_from_face_name (f, face, 1); |
| 4420 | |
| 4421 | for (i = 1; i < LFACE_VECTOR_SIZE; ++i) |
| 4422 | if (!UNSPECIFIEDP (XVECTOR (lface)->contents[i])) |
| 4423 | break; |
| 4424 | |
| 4425 | return i == LFACE_VECTOR_SIZE ? Qt : Qnil; |
| 4426 | } |
| 4427 | |
| 4428 | |
| 4429 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, |
| 4430 | 0, 1, 0, |
| 4431 | "Return an alist of frame-local faces defined on FRAME.\n\ |
| 4432 | For internal use only.") |
| 4433 | (frame) |
| 4434 | Lisp_Object frame; |
| 4435 | { |
| 4436 | struct frame *f = frame_or_selected_frame (frame, 0); |
| 4437 | return f->face_alist; |
| 4438 | } |
| 4439 | |
| 4440 | |
| 4441 | /* Return a hash code for Lisp string STRING with case ignored. Used |
| 4442 | below in computing a hash value for a Lisp face. */ |
| 4443 | |
| 4444 | static INLINE unsigned |
| 4445 | hash_string_case_insensitive (string) |
| 4446 | Lisp_Object string; |
| 4447 | { |
| 4448 | unsigned char *s; |
| 4449 | unsigned hash = 0; |
| 4450 | xassert (STRINGP (string)); |
| 4451 | for (s = XSTRING (string)->data; *s; ++s) |
| 4452 | hash = (hash << 1) ^ tolower (*s); |
| 4453 | return hash; |
| 4454 | } |
| 4455 | |
| 4456 | |
| 4457 | /* Return a hash code for face attribute vector V. */ |
| 4458 | |
| 4459 | static INLINE unsigned |
| 4460 | lface_hash (v) |
| 4461 | Lisp_Object *v; |
| 4462 | { |
| 4463 | return (hash_string_case_insensitive (v[LFACE_FAMILY_INDEX]) |
| 4464 | ^ hash_string_case_insensitive (v[LFACE_FOREGROUND_INDEX]) |
| 4465 | ^ hash_string_case_insensitive (v[LFACE_BACKGROUND_INDEX]) |
| 4466 | ^ XFASTINT (v[LFACE_WEIGHT_INDEX]) |
| 4467 | ^ XFASTINT (v[LFACE_SLANT_INDEX]) |
| 4468 | ^ XFASTINT (v[LFACE_SWIDTH_INDEX]) |
| 4469 | ^ XFASTINT (v[LFACE_HEIGHT_INDEX])); |
| 4470 | } |
| 4471 | |
| 4472 | |
| 4473 | /* Return non-zero if LFACE1 and LFACE2 specify the same font (without |
| 4474 | considering charsets/registries). They do if they specify the same |
| 4475 | family, point size, weight, width, slant, and fontset. Both LFACE1 |
| 4476 | and LFACE2 must be fully-specified. */ |
| 4477 | |
| 4478 | static INLINE int |
| 4479 | lface_same_font_attributes_p (lface1, lface2) |
| 4480 | Lisp_Object *lface1, *lface2; |
| 4481 | { |
| 4482 | xassert (lface_fully_specified_p (lface1) |
| 4483 | && lface_fully_specified_p (lface2)); |
| 4484 | return (xstricmp (XSTRING (lface1[LFACE_FAMILY_INDEX])->data, |
| 4485 | XSTRING (lface2[LFACE_FAMILY_INDEX])->data) == 0 |
| 4486 | && (XFASTINT (lface1[LFACE_HEIGHT_INDEX]) |
| 4487 | == XFASTINT (lface2[LFACE_HEIGHT_INDEX])) |
| 4488 | && EQ (lface1[LFACE_SWIDTH_INDEX], lface2[LFACE_SWIDTH_INDEX]) |
| 4489 | && EQ (lface1[LFACE_WEIGHT_INDEX], lface2[LFACE_WEIGHT_INDEX]) |
| 4490 | && EQ (lface1[LFACE_SLANT_INDEX], lface2[LFACE_SLANT_INDEX]) |
| 4491 | && (EQ (lface1[LFACE_FONT_INDEX], lface2[LFACE_FONT_INDEX]) |
| 4492 | || (STRINGP (lface1[LFACE_FONT_INDEX]) |
| 4493 | && STRINGP (lface2[LFACE_FONT_INDEX]) |
| 4494 | && xstricmp (XSTRING (lface1[LFACE_FONT_INDEX])->data, |
| 4495 | XSTRING (lface2[LFACE_FONT_INDEX])->data)))); |
| 4496 | } |
| 4497 | |
| 4498 | |
| 4499 | \f |
| 4500 | /*********************************************************************** |
| 4501 | Realized Faces |
| 4502 | ***********************************************************************/ |
| 4503 | |
| 4504 | /* Allocate and return a new realized face for Lisp face attribute |
| 4505 | vector ATTR. */ |
| 4506 | |
| 4507 | static struct face * |
| 4508 | make_realized_face (attr) |
| 4509 | Lisp_Object *attr; |
| 4510 | { |
| 4511 | struct face *face = (struct face *) xmalloc (sizeof *face); |
| 4512 | bzero (face, sizeof *face); |
| 4513 | face->ascii_face = face; |
| 4514 | bcopy (attr, face->lface, sizeof face->lface); |
| 4515 | return face; |
| 4516 | } |
| 4517 | |
| 4518 | |
| 4519 | /* Free realized face FACE, including its X resources. FACE may |
| 4520 | be null. */ |
| 4521 | |
| 4522 | static void |
| 4523 | free_realized_face (f, face) |
| 4524 | struct frame *f; |
| 4525 | struct face *face; |
| 4526 | { |
| 4527 | if (face) |
| 4528 | { |
| 4529 | #ifdef HAVE_WINDOW_SYSTEM |
| 4530 | if (FRAME_WINDOW_P (f)) |
| 4531 | { |
| 4532 | /* Free fontset of FACE if it is ASCII face. */ |
| 4533 | if (face->fontset >= 0 && face == face->ascii_face) |
| 4534 | free_face_fontset (f, face); |
| 4535 | if (face->gc) |
| 4536 | { |
| 4537 | x_free_gc (f, face->gc); |
| 4538 | face->gc = 0; |
| 4539 | } |
| 4540 | |
| 4541 | free_face_colors (f, face); |
| 4542 | x_destroy_bitmap (f, face->stipple); |
| 4543 | } |
| 4544 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 4545 | |
| 4546 | xfree (face); |
| 4547 | } |
| 4548 | } |
| 4549 | |
| 4550 | |
| 4551 | /* Prepare face FACE for subsequent display on frame F. This |
| 4552 | allocated GCs if they haven't been allocated yet or have been freed |
| 4553 | by clearing the face cache. */ |
| 4554 | |
| 4555 | void |
| 4556 | prepare_face_for_display (f, face) |
| 4557 | struct frame *f; |
| 4558 | struct face *face; |
| 4559 | { |
| 4560 | #ifdef HAVE_WINDOW_SYSTEM |
| 4561 | xassert (FRAME_WINDOW_P (f)); |
| 4562 | |
| 4563 | if (face->gc == 0) |
| 4564 | { |
| 4565 | XGCValues xgcv; |
| 4566 | unsigned long mask = GCForeground | GCBackground | GCGraphicsExposures; |
| 4567 | |
| 4568 | xgcv.foreground = face->foreground; |
| 4569 | xgcv.background = face->background; |
| 4570 | #ifdef HAVE_X_WINDOWS |
| 4571 | xgcv.graphics_exposures = False; |
| 4572 | #endif |
| 4573 | /* The font of FACE may be null if we couldn't load it. */ |
| 4574 | if (face->font) |
| 4575 | { |
| 4576 | #ifdef HAVE_X_WINDOWS |
| 4577 | xgcv.font = face->font->fid; |
| 4578 | #endif |
| 4579 | #ifdef WINDOWSNT |
| 4580 | xgcv.font = face->font; |
| 4581 | #endif |
| 4582 | mask |= GCFont; |
| 4583 | } |
| 4584 | |
| 4585 | BLOCK_INPUT; |
| 4586 | #ifdef HAVE_X_WINDOWS |
| 4587 | if (face->stipple) |
| 4588 | { |
| 4589 | xgcv.fill_style = FillOpaqueStippled; |
| 4590 | xgcv.stipple = x_bitmap_pixmap (f, face->stipple); |
| 4591 | mask |= GCFillStyle | GCStipple; |
| 4592 | } |
| 4593 | #endif |
| 4594 | face->gc = x_create_gc (f, mask, &xgcv); |
| 4595 | UNBLOCK_INPUT; |
| 4596 | } |
| 4597 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 4598 | } |
| 4599 | |
| 4600 | \f |
| 4601 | /*********************************************************************** |
| 4602 | Face Cache |
| 4603 | ***********************************************************************/ |
| 4604 | |
| 4605 | /* Return a new face cache for frame F. */ |
| 4606 | |
| 4607 | static struct face_cache * |
| 4608 | make_face_cache (f) |
| 4609 | struct frame *f; |
| 4610 | { |
| 4611 | struct face_cache *c; |
| 4612 | int size; |
| 4613 | |
| 4614 | c = (struct face_cache *) xmalloc (sizeof *c); |
| 4615 | bzero (c, sizeof *c); |
| 4616 | size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
| 4617 | c->buckets = (struct face **) xmalloc (size); |
| 4618 | bzero (c->buckets, size); |
| 4619 | c->size = 50; |
| 4620 | c->faces_by_id = (struct face **) xmalloc (c->size * sizeof *c->faces_by_id); |
| 4621 | c->f = f; |
| 4622 | return c; |
| 4623 | } |
| 4624 | |
| 4625 | |
| 4626 | /* Clear out all graphics contexts for all realized faces, except for |
| 4627 | the basic faces. This should be done from time to time just to avoid |
| 4628 | keeping too many graphics contexts that are no longer needed. */ |
| 4629 | |
| 4630 | static void |
| 4631 | clear_face_gcs (c) |
| 4632 | struct face_cache *c; |
| 4633 | { |
| 4634 | if (c && FRAME_WINDOW_P (c->f)) |
| 4635 | { |
| 4636 | #ifdef HAVE_WINDOW_SYSTEM |
| 4637 | int i; |
| 4638 | for (i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i) |
| 4639 | { |
| 4640 | struct face *face = c->faces_by_id[i]; |
| 4641 | if (face && face->gc) |
| 4642 | { |
| 4643 | x_free_gc (c->f, face->gc); |
| 4644 | face->gc = 0; |
| 4645 | } |
| 4646 | } |
| 4647 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 4648 | } |
| 4649 | } |
| 4650 | |
| 4651 | |
| 4652 | /* Free all realized faces in face cache C, including basic faces. C |
| 4653 | may be null. If faces are freed, make sure the frame's current |
| 4654 | matrix is marked invalid, so that a display caused by an expose |
| 4655 | event doesn't try to use faces we destroyed. */ |
| 4656 | |
| 4657 | static void |
| 4658 | free_realized_faces (c) |
| 4659 | struct face_cache *c; |
| 4660 | { |
| 4661 | if (c && c->used) |
| 4662 | { |
| 4663 | int i, size; |
| 4664 | struct frame *f = c->f; |
| 4665 | |
| 4666 | for (i = 0; i < c->used; ++i) |
| 4667 | { |
| 4668 | free_realized_face (f, c->faces_by_id[i]); |
| 4669 | c->faces_by_id[i] = NULL; |
| 4670 | } |
| 4671 | |
| 4672 | c->used = 0; |
| 4673 | size = FACE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
| 4674 | bzero (c->buckets, size); |
| 4675 | |
| 4676 | /* Must do a thorough redisplay the next time. Mark current |
| 4677 | matrices as invalid because they will reference faces freed |
| 4678 | above. This function is also called when a frame is |
| 4679 | destroyed. In this case, the root window of F is nil. */ |
| 4680 | if (WINDOWP (f->root_window)) |
| 4681 | { |
| 4682 | clear_current_matrices (f); |
| 4683 | ++windows_or_buffers_changed; |
| 4684 | } |
| 4685 | } |
| 4686 | } |
| 4687 | |
| 4688 | |
| 4689 | /* Free all faces realized for multibyte characters on frame F that |
| 4690 | has FONTSET. */ |
| 4691 | |
| 4692 | void |
| 4693 | free_realized_multibyte_face (f, fontset) |
| 4694 | struct frame *f; |
| 4695 | int fontset; |
| 4696 | { |
| 4697 | struct face_cache *cache = FRAME_FACE_CACHE (f); |
| 4698 | struct face *face; |
| 4699 | int i; |
| 4700 | |
| 4701 | for (i = 0; i < cache->used; i++) |
| 4702 | { |
| 4703 | face = cache->faces_by_id[i]; |
| 4704 | if (face |
| 4705 | && face != face->ascii_face |
| 4706 | && face->fontset == fontset) |
| 4707 | { |
| 4708 | uncache_face (cache, face); |
| 4709 | free_realized_face (f, face); |
| 4710 | } |
| 4711 | } |
| 4712 | if (WINDOWP (f->root_window)) |
| 4713 | { |
| 4714 | clear_current_matrices (f); |
| 4715 | ++windows_or_buffers_changed; |
| 4716 | } |
| 4717 | } |
| 4718 | |
| 4719 | |
| 4720 | /* Free all realized faces on FRAME or on all frames if FRAME is nil. |
| 4721 | This is done after attributes of a named face have been changed, |
| 4722 | because we can't tell which realized faces depend on that face. */ |
| 4723 | |
| 4724 | void |
| 4725 | free_all_realized_faces (frame) |
| 4726 | Lisp_Object frame; |
| 4727 | { |
| 4728 | if (NILP (frame)) |
| 4729 | { |
| 4730 | Lisp_Object rest; |
| 4731 | FOR_EACH_FRAME (rest, frame) |
| 4732 | free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame))); |
| 4733 | } |
| 4734 | else |
| 4735 | free_realized_faces (FRAME_FACE_CACHE (XFRAME (frame))); |
| 4736 | } |
| 4737 | |
| 4738 | |
| 4739 | /* Free face cache C and faces in it, including their X resources. */ |
| 4740 | |
| 4741 | static void |
| 4742 | free_face_cache (c) |
| 4743 | struct face_cache *c; |
| 4744 | { |
| 4745 | if (c) |
| 4746 | { |
| 4747 | free_realized_faces (c); |
| 4748 | xfree (c->buckets); |
| 4749 | xfree (c->faces_by_id); |
| 4750 | xfree (c); |
| 4751 | } |
| 4752 | } |
| 4753 | |
| 4754 | |
| 4755 | /* Cache realized face FACE in face cache C. HASH is the hash value |
| 4756 | of FACE. If FACE->fontset >= 0, add the new face to the end of the |
| 4757 | collision list of the face hash table of C. This is done because |
| 4758 | otherwise lookup_face would find FACE for every character, even if |
| 4759 | faces with the same attributes but for specific characters exist. */ |
| 4760 | |
| 4761 | static void |
| 4762 | cache_face (c, face, hash) |
| 4763 | struct face_cache *c; |
| 4764 | struct face *face; |
| 4765 | unsigned hash; |
| 4766 | { |
| 4767 | int i = hash % FACE_CACHE_BUCKETS_SIZE; |
| 4768 | |
| 4769 | face->hash = hash; |
| 4770 | |
| 4771 | if (face->fontset >= 0) |
| 4772 | { |
| 4773 | struct face *last = c->buckets[i]; |
| 4774 | if (last) |
| 4775 | { |
| 4776 | while (last->next) |
| 4777 | last = last->next; |
| 4778 | last->next = face; |
| 4779 | face->prev = last; |
| 4780 | face->next = NULL; |
| 4781 | } |
| 4782 | else |
| 4783 | { |
| 4784 | c->buckets[i] = face; |
| 4785 | face->prev = face->next = NULL; |
| 4786 | } |
| 4787 | } |
| 4788 | else |
| 4789 | { |
| 4790 | face->prev = NULL; |
| 4791 | face->next = c->buckets[i]; |
| 4792 | if (face->next) |
| 4793 | face->next->prev = face; |
| 4794 | c->buckets[i] = face; |
| 4795 | } |
| 4796 | |
| 4797 | /* Find a free slot in C->faces_by_id and use the index of the free |
| 4798 | slot as FACE->id. */ |
| 4799 | for (i = 0; i < c->used; ++i) |
| 4800 | if (c->faces_by_id[i] == NULL) |
| 4801 | break; |
| 4802 | face->id = i; |
| 4803 | |
| 4804 | /* Maybe enlarge C->faces_by_id. */ |
| 4805 | if (i == c->used && c->used == c->size) |
| 4806 | { |
| 4807 | int new_size = 2 * c->size; |
| 4808 | int sz = new_size * sizeof *c->faces_by_id; |
| 4809 | c->faces_by_id = (struct face **) xrealloc (c->faces_by_id, sz); |
| 4810 | c->size = new_size; |
| 4811 | } |
| 4812 | |
| 4813 | #if GLYPH_DEBUG |
| 4814 | /* Check that FACE got a unique id. */ |
| 4815 | { |
| 4816 | int j, n; |
| 4817 | struct face *face; |
| 4818 | |
| 4819 | for (j = n = 0; j < FACE_CACHE_BUCKETS_SIZE; ++j) |
| 4820 | for (face = c->buckets[j]; face; face = face->next) |
| 4821 | if (face->id == i) |
| 4822 | ++n; |
| 4823 | |
| 4824 | xassert (n == 1); |
| 4825 | } |
| 4826 | #endif /* GLYPH_DEBUG */ |
| 4827 | |
| 4828 | c->faces_by_id[i] = face; |
| 4829 | if (i == c->used) |
| 4830 | ++c->used; |
| 4831 | } |
| 4832 | |
| 4833 | |
| 4834 | /* Remove face FACE from cache C. */ |
| 4835 | |
| 4836 | static void |
| 4837 | uncache_face (c, face) |
| 4838 | struct face_cache *c; |
| 4839 | struct face *face; |
| 4840 | { |
| 4841 | int i = face->hash % FACE_CACHE_BUCKETS_SIZE; |
| 4842 | |
| 4843 | if (face->prev) |
| 4844 | face->prev->next = face->next; |
| 4845 | else |
| 4846 | c->buckets[i] = face->next; |
| 4847 | |
| 4848 | if (face->next) |
| 4849 | face->next->prev = face->prev; |
| 4850 | |
| 4851 | c->faces_by_id[face->id] = NULL; |
| 4852 | if (face->id == c->used) |
| 4853 | --c->used; |
| 4854 | } |
| 4855 | |
| 4856 | |
| 4857 | /* Look up a realized face with face attributes ATTR in the face cache |
| 4858 | of frame F. The face will be used to display character C. Value |
| 4859 | is the ID of the face found. If no suitable face is found, realize |
| 4860 | a new one. In that case, if C is a multibyte character, BASE_FACE |
| 4861 | is a face for ASCII characters that has the same attributes. */ |
| 4862 | |
| 4863 | INLINE int |
| 4864 | lookup_face (f, attr, c, base_face) |
| 4865 | struct frame *f; |
| 4866 | Lisp_Object *attr; |
| 4867 | int c; |
| 4868 | struct face *base_face; |
| 4869 | { |
| 4870 | struct face_cache *cache = FRAME_FACE_CACHE (f); |
| 4871 | unsigned hash; |
| 4872 | int i; |
| 4873 | struct face *face; |
| 4874 | |
| 4875 | xassert (cache != NULL); |
| 4876 | check_lface_attrs (attr); |
| 4877 | |
| 4878 | /* Look up ATTR in the face cache. */ |
| 4879 | hash = lface_hash (attr); |
| 4880 | i = hash % FACE_CACHE_BUCKETS_SIZE; |
| 4881 | |
| 4882 | for (face = cache->buckets[i]; face; face = face->next) |
| 4883 | if (face->hash == hash |
| 4884 | && (!FRAME_WINDOW_P (f) |
| 4885 | || FACE_SUITABLE_FOR_CHAR_P (face, c)) |
| 4886 | && lface_equal_p (face->lface, attr)) |
| 4887 | break; |
| 4888 | |
| 4889 | /* If not found, realize a new face. */ |
| 4890 | if (face == NULL) |
| 4891 | face = realize_face (cache, attr, c, base_face, -1); |
| 4892 | |
| 4893 | #if GLYPH_DEBUG |
| 4894 | xassert (face == FACE_FROM_ID (f, face->id)); |
| 4895 | |
| 4896 | /* When this function is called from face_for_char (in this case, C is |
| 4897 | a multibyte character), a fontset of a face returned by |
| 4898 | realize_face is not yet set, i.e. FACE_SUITABLE_FOR_CHAR_P (FACE, |
| 4899 | C) is not sutisfied. The fontset is set for this face by |
| 4900 | face_for_char later. */ |
| 4901 | #if 0 |
| 4902 | if (FRAME_WINDOW_P (f)) |
| 4903 | xassert (FACE_SUITABLE_FOR_CHAR_P (face, c)); |
| 4904 | #endif |
| 4905 | #endif /* GLYPH_DEBUG */ |
| 4906 | |
| 4907 | return face->id; |
| 4908 | } |
| 4909 | |
| 4910 | |
| 4911 | /* Return the face id of the realized face for named face SYMBOL on |
| 4912 | frame F suitable for displaying character C. */ |
| 4913 | |
| 4914 | int |
| 4915 | lookup_named_face (f, symbol, c) |
| 4916 | struct frame *f; |
| 4917 | Lisp_Object symbol; |
| 4918 | int c; |
| 4919 | { |
| 4920 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 4921 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; |
| 4922 | struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4923 | |
| 4924 | get_lface_attributes (f, symbol, symbol_attrs, 1); |
| 4925 | bcopy (default_face->lface, attrs, sizeof attrs); |
| 4926 | merge_face_vectors (symbol_attrs, attrs); |
| 4927 | return lookup_face (f, attrs, c, NULL); |
| 4928 | } |
| 4929 | |
| 4930 | |
| 4931 | /* Return the ID of the realized ASCII face of Lisp face with ID |
| 4932 | LFACE_ID on frame F. Value is -1 if LFACE_ID isn't valid. */ |
| 4933 | |
| 4934 | int |
| 4935 | ascii_face_of_lisp_face (f, lface_id) |
| 4936 | struct frame *f; |
| 4937 | int lface_id; |
| 4938 | { |
| 4939 | int face_id; |
| 4940 | |
| 4941 | if (lface_id >= 0 && lface_id < lface_id_to_name_size) |
| 4942 | { |
| 4943 | Lisp_Object face_name = lface_id_to_name[lface_id]; |
| 4944 | face_id = lookup_named_face (f, face_name, 0); |
| 4945 | } |
| 4946 | else |
| 4947 | face_id = -1; |
| 4948 | |
| 4949 | return face_id; |
| 4950 | } |
| 4951 | |
| 4952 | |
| 4953 | /* Return a face for charset ASCII that is like the face with id |
| 4954 | FACE_ID on frame F, but has a font that is STEPS steps smaller. |
| 4955 | STEPS < 0 means larger. Value is the id of the face. */ |
| 4956 | |
| 4957 | int |
| 4958 | smaller_face (f, face_id, steps) |
| 4959 | struct frame *f; |
| 4960 | int face_id, steps; |
| 4961 | { |
| 4962 | #ifdef HAVE_WINDOW_SYSTEM |
| 4963 | struct face *face; |
| 4964 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 4965 | int pt, last_pt, last_height; |
| 4966 | int delta; |
| 4967 | int new_face_id; |
| 4968 | struct face *new_face; |
| 4969 | |
| 4970 | /* If not called for an X frame, just return the original face. */ |
| 4971 | if (FRAME_TERMCAP_P (f)) |
| 4972 | return face_id; |
| 4973 | |
| 4974 | /* Try in increments of 1/2 pt. */ |
| 4975 | delta = steps < 0 ? 5 : -5; |
| 4976 | steps = abs (steps); |
| 4977 | |
| 4978 | face = FACE_FROM_ID (f, face_id); |
| 4979 | bcopy (face->lface, attrs, sizeof attrs); |
| 4980 | pt = last_pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]); |
| 4981 | new_face_id = face_id; |
| 4982 | last_height = FONT_HEIGHT (face->font); |
| 4983 | |
| 4984 | while (steps |
| 4985 | && pt + delta > 0 |
| 4986 | /* Give up if we cannot find a font within 10pt. */ |
| 4987 | && abs (last_pt - pt) < 100) |
| 4988 | { |
| 4989 | /* Look up a face for a slightly smaller/larger font. */ |
| 4990 | pt += delta; |
| 4991 | attrs[LFACE_HEIGHT_INDEX] = make_number (pt); |
| 4992 | new_face_id = lookup_face (f, attrs, 0, NULL); |
| 4993 | new_face = FACE_FROM_ID (f, new_face_id); |
| 4994 | |
| 4995 | /* If height changes, count that as one step. */ |
| 4996 | if (FONT_HEIGHT (new_face->font) != last_height) |
| 4997 | { |
| 4998 | --steps; |
| 4999 | last_height = FONT_HEIGHT (new_face->font); |
| 5000 | last_pt = pt; |
| 5001 | } |
| 5002 | } |
| 5003 | |
| 5004 | return new_face_id; |
| 5005 | |
| 5006 | #else /* not HAVE_WINDOW_SYSTEM */ |
| 5007 | |
| 5008 | return face_id; |
| 5009 | |
| 5010 | #endif /* not HAVE_WINDOW_SYSTEM */ |
| 5011 | } |
| 5012 | |
| 5013 | |
| 5014 | /* Return a face for charset ASCII that is like the face with id |
| 5015 | FACE_ID on frame F, but has height HEIGHT. */ |
| 5016 | |
| 5017 | int |
| 5018 | face_with_height (f, face_id, height) |
| 5019 | struct frame *f; |
| 5020 | int face_id; |
| 5021 | int height; |
| 5022 | { |
| 5023 | #ifdef HAVE_WINDOW_SYSTEM |
| 5024 | struct face *face; |
| 5025 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 5026 | |
| 5027 | if (FRAME_TERMCAP_P (f) |
| 5028 | || height <= 0) |
| 5029 | return face_id; |
| 5030 | |
| 5031 | face = FACE_FROM_ID (f, face_id); |
| 5032 | bcopy (face->lface, attrs, sizeof attrs); |
| 5033 | attrs[LFACE_HEIGHT_INDEX] = make_number (height); |
| 5034 | face_id = lookup_face (f, attrs, 0, NULL); |
| 5035 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5036 | |
| 5037 | return face_id; |
| 5038 | } |
| 5039 | |
| 5040 | /* Return the face id of the realized face for named face SYMBOL on |
| 5041 | frame F suitable for displaying character C, and use attributes of |
| 5042 | the face FACE_ID for attributes that aren't completely specified by |
| 5043 | SYMBOL. This is like lookup_named_face, except that the default |
| 5044 | attributes come from FACE_ID, not from the default face. FACE_ID |
| 5045 | is assumed to be already realized. */ |
| 5046 | |
| 5047 | int |
| 5048 | lookup_derived_face (f, symbol, c, face_id) |
| 5049 | struct frame *f; |
| 5050 | Lisp_Object symbol; |
| 5051 | int c; |
| 5052 | int face_id; |
| 5053 | { |
| 5054 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 5055 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; |
| 5056 | struct face *default_face = FACE_FROM_ID (f, face_id); |
| 5057 | |
| 5058 | if (!default_face) |
| 5059 | abort (); |
| 5060 | |
| 5061 | get_lface_attributes (f, symbol, symbol_attrs, 1); |
| 5062 | bcopy (default_face->lface, attrs, sizeof attrs); |
| 5063 | merge_face_vectors (symbol_attrs, attrs); |
| 5064 | return lookup_face (f, attrs, c, default_face); |
| 5065 | } |
| 5066 | |
| 5067 | |
| 5068 | \f |
| 5069 | /*********************************************************************** |
| 5070 | Font selection |
| 5071 | ***********************************************************************/ |
| 5072 | |
| 5073 | DEFUN ("internal-set-font-selection-order", |
| 5074 | Finternal_set_font_selection_order, |
| 5075 | Sinternal_set_font_selection_order, 1, 1, 0, |
| 5076 | "Set font selection order for face font selection to ORDER.\n\ |
| 5077 | ORDER must be a list of length 4 containing the symbols `:width',\n\ |
| 5078 | `:height', `:weight', and `:slant'. Face attributes appearing\n\ |
| 5079 | first in ORDER are matched first, e.g. if `:height' appears before\n\ |
| 5080 | `:weight' in ORDER, font selection first tries to find a font with\n\ |
| 5081 | a suitable height, and then tries to match the font weight.\n\ |
| 5082 | Value is ORDER.") |
| 5083 | (order) |
| 5084 | Lisp_Object order; |
| 5085 | { |
| 5086 | Lisp_Object list; |
| 5087 | int i; |
| 5088 | int indices[4]; |
| 5089 | |
| 5090 | CHECK_LIST (order, 0); |
| 5091 | bzero (indices, sizeof indices); |
| 5092 | i = 0; |
| 5093 | |
| 5094 | for (list = order; |
| 5095 | CONSP (list) && i < DIM (indices); |
| 5096 | list = XCDR (list), ++i) |
| 5097 | { |
| 5098 | Lisp_Object attr = XCAR (list); |
| 5099 | int xlfd; |
| 5100 | |
| 5101 | if (EQ (attr, QCwidth)) |
| 5102 | xlfd = XLFD_SWIDTH; |
| 5103 | else if (EQ (attr, QCheight)) |
| 5104 | xlfd = XLFD_POINT_SIZE; |
| 5105 | else if (EQ (attr, QCweight)) |
| 5106 | xlfd = XLFD_WEIGHT; |
| 5107 | else if (EQ (attr, QCslant)) |
| 5108 | xlfd = XLFD_SLANT; |
| 5109 | else |
| 5110 | break; |
| 5111 | |
| 5112 | if (indices[i] != 0) |
| 5113 | break; |
| 5114 | indices[i] = xlfd; |
| 5115 | } |
| 5116 | |
| 5117 | if (!NILP (list) |
| 5118 | || i != DIM (indices) |
| 5119 | || indices[0] == 0 |
| 5120 | || indices[1] == 0 |
| 5121 | || indices[2] == 0 |
| 5122 | || indices[3] == 0) |
| 5123 | signal_error ("Invalid font sort order", order); |
| 5124 | |
| 5125 | if (bcmp (indices, font_sort_order, sizeof indices) != 0) |
| 5126 | { |
| 5127 | bcopy (indices, font_sort_order, sizeof font_sort_order); |
| 5128 | free_all_realized_faces (Qnil); |
| 5129 | } |
| 5130 | |
| 5131 | return Qnil; |
| 5132 | } |
| 5133 | |
| 5134 | |
| 5135 | DEFUN ("internal-set-alternative-font-family-alist", |
| 5136 | Finternal_set_alternative_font_family_alist, |
| 5137 | Sinternal_set_alternative_font_family_alist, 1, 1, 0, |
| 5138 | "Define alternative font families to try in face font selection.\n\ |
| 5139 | ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.\n\ |
| 5140 | Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can\n\ |
| 5141 | be found. Value is ALIST.") |
| 5142 | (alist) |
| 5143 | Lisp_Object alist; |
| 5144 | { |
| 5145 | CHECK_LIST (alist, 0); |
| 5146 | Vface_alternative_font_family_alist = alist; |
| 5147 | free_all_realized_faces (Qnil); |
| 5148 | return alist; |
| 5149 | } |
| 5150 | |
| 5151 | |
| 5152 | #ifdef HAVE_WINDOW_SYSTEM |
| 5153 | |
| 5154 | /* Value is non-zero if FONT is the name of a scalable font. The |
| 5155 | X11R6 XLFD spec says that point size, pixel size, and average width |
| 5156 | are zero for scalable fonts. Intlfonts contain at least one |
| 5157 | scalable font ("*-muleindian-1") for which this isn't true, so we |
| 5158 | just test average width. */ |
| 5159 | |
| 5160 | static int |
| 5161 | font_scalable_p (font) |
| 5162 | struct font_name *font; |
| 5163 | { |
| 5164 | char *s = font->fields[XLFD_AVGWIDTH]; |
| 5165 | return (*s == '0' && *(s + 1) == '\0') |
| 5166 | #ifdef WINDOWSNT |
| 5167 | /* Windows implementation of XLFD is slightly broken for backward |
| 5168 | compatibility with previous broken versions, so test for |
| 5169 | wildcards as well as 0. */ |
| 5170 | || *s == '*' |
| 5171 | #endif |
| 5172 | ; |
| 5173 | } |
| 5174 | |
| 5175 | |
| 5176 | /* Value is non-zero if FONT1 is a better match for font attributes |
| 5177 | VALUES than FONT2. VALUES is an array of face attribute values in |
| 5178 | font sort order. COMPARE_PT_P zero means don't compare point |
| 5179 | sizes. */ |
| 5180 | |
| 5181 | static int |
| 5182 | better_font_p (values, font1, font2, compare_pt_p) |
| 5183 | int *values; |
| 5184 | struct font_name *font1, *font2; |
| 5185 | int compare_pt_p; |
| 5186 | { |
| 5187 | int i; |
| 5188 | |
| 5189 | for (i = 0; i < 4; ++i) |
| 5190 | { |
| 5191 | int xlfd_idx = font_sort_order[i]; |
| 5192 | |
| 5193 | if (compare_pt_p || xlfd_idx != XLFD_POINT_SIZE) |
| 5194 | { |
| 5195 | int delta1 = abs (values[i] - font1->numeric[xlfd_idx]); |
| 5196 | int delta2 = abs (values[i] - font2->numeric[xlfd_idx]); |
| 5197 | |
| 5198 | if (delta1 > delta2) |
| 5199 | return 0; |
| 5200 | else if (delta1 < delta2) |
| 5201 | return 1; |
| 5202 | else |
| 5203 | { |
| 5204 | /* The difference may be equal because, e.g., the face |
| 5205 | specifies `italic' but we have only `regular' and |
| 5206 | `oblique'. Prefer `oblique' in this case. */ |
| 5207 | if ((xlfd_idx == XLFD_WEIGHT || xlfd_idx == XLFD_SLANT) |
| 5208 | && font1->numeric[xlfd_idx] > values[i] |
| 5209 | && font2->numeric[xlfd_idx] < values[i]) |
| 5210 | return 1; |
| 5211 | } |
| 5212 | } |
| 5213 | } |
| 5214 | |
| 5215 | return 0; |
| 5216 | } |
| 5217 | |
| 5218 | |
| 5219 | #if SCALABLE_FONTS |
| 5220 | |
| 5221 | /* Value is non-zero if FONT is an exact match for face attributes in |
| 5222 | SPECIFIED. SPECIFIED is an array of face attribute values in font |
| 5223 | sort order. */ |
| 5224 | |
| 5225 | static int |
| 5226 | exact_face_match_p (specified, font) |
| 5227 | int *specified; |
| 5228 | struct font_name *font; |
| 5229 | { |
| 5230 | int i; |
| 5231 | |
| 5232 | for (i = 0; i < 4; ++i) |
| 5233 | if (specified[i] != font->numeric[font_sort_order[i]]) |
| 5234 | break; |
| 5235 | |
| 5236 | return i == 4; |
| 5237 | } |
| 5238 | |
| 5239 | |
| 5240 | /* Value is the name of a scaled font, generated from scalable font |
| 5241 | FONT on frame F. SPECIFIED_PT is the point-size to scale FONT to. |
| 5242 | Value is allocated from heap. */ |
| 5243 | |
| 5244 | static char * |
| 5245 | build_scalable_font_name (f, font, specified_pt) |
| 5246 | struct frame *f; |
| 5247 | struct font_name *font; |
| 5248 | int specified_pt; |
| 5249 | { |
| 5250 | char point_size[20], pixel_size[20]; |
| 5251 | int pixel_value; |
| 5252 | double resy = FRAME_X_DISPLAY_INFO (f)->resy; |
| 5253 | double pt; |
| 5254 | |
| 5255 | /* If scalable font is for a specific resolution, compute |
| 5256 | the point size we must specify from the resolution of |
| 5257 | the display and the specified resolution of the font. */ |
| 5258 | if (font->numeric[XLFD_RESY] != 0) |
| 5259 | { |
| 5260 | pt = resy / font->numeric[XLFD_RESY] * specified_pt + 0.5; |
| 5261 | pixel_value = font->numeric[XLFD_RESY] / 720.0 * pt; |
| 5262 | } |
| 5263 | else |
| 5264 | { |
| 5265 | pt = specified_pt; |
| 5266 | pixel_value = resy / 720.0 * pt; |
| 5267 | } |
| 5268 | |
| 5269 | /* Set point size of the font. */ |
| 5270 | sprintf (point_size, "%d", (int) pt); |
| 5271 | font->fields[XLFD_POINT_SIZE] = point_size; |
| 5272 | font->numeric[XLFD_POINT_SIZE] = pt; |
| 5273 | |
| 5274 | /* Set pixel size. */ |
| 5275 | sprintf (pixel_size, "%d", pixel_value); |
| 5276 | font->fields[XLFD_PIXEL_SIZE] = pixel_size; |
| 5277 | font->numeric[XLFD_PIXEL_SIZE] = pixel_value; |
| 5278 | |
| 5279 | /* If font doesn't specify its resolution, use the |
| 5280 | resolution of the display. */ |
| 5281 | if (font->numeric[XLFD_RESY] == 0) |
| 5282 | { |
| 5283 | char buffer[20]; |
| 5284 | sprintf (buffer, "%d", (int) resy); |
| 5285 | font->fields[XLFD_RESY] = buffer; |
| 5286 | font->numeric[XLFD_RESY] = resy; |
| 5287 | } |
| 5288 | |
| 5289 | if (strcmp (font->fields[XLFD_RESX], "0") == 0) |
| 5290 | { |
| 5291 | char buffer[20]; |
| 5292 | int resx = FRAME_X_DISPLAY_INFO (f)->resx; |
| 5293 | sprintf (buffer, "%d", resx); |
| 5294 | font->fields[XLFD_RESX] = buffer; |
| 5295 | font->numeric[XLFD_RESX] = resx; |
| 5296 | } |
| 5297 | |
| 5298 | return build_font_name (font); |
| 5299 | } |
| 5300 | |
| 5301 | |
| 5302 | /* Value is non-zero if we are allowed to use scalable font FONT. We |
| 5303 | can't run a Lisp function here since this function may be called |
| 5304 | with input blocked. */ |
| 5305 | |
| 5306 | static int |
| 5307 | may_use_scalable_font_p (font, name) |
| 5308 | struct font_name *font; |
| 5309 | char *name; |
| 5310 | { |
| 5311 | if (EQ (Vscalable_fonts_allowed, Qt)) |
| 5312 | return 1; |
| 5313 | else if (CONSP (Vscalable_fonts_allowed)) |
| 5314 | { |
| 5315 | Lisp_Object tail, regexp; |
| 5316 | |
| 5317 | for (tail = Vscalable_fonts_allowed; CONSP (tail); tail = XCDR (tail)) |
| 5318 | { |
| 5319 | regexp = XCAR (tail); |
| 5320 | if (STRINGP (regexp) |
| 5321 | && fast_c_string_match_ignore_case (regexp, name) >= 0) |
| 5322 | return 1; |
| 5323 | } |
| 5324 | } |
| 5325 | |
| 5326 | return 0; |
| 5327 | } |
| 5328 | |
| 5329 | #endif /* SCALABLE_FONTS != 0 */ |
| 5330 | |
| 5331 | |
| 5332 | /* Return the name of the best matching font for face attributes |
| 5333 | ATTRS in the array of font_name structures FONTS which contains |
| 5334 | NFONTS elements. Value is a font name which is allocated from |
| 5335 | the heap. FONTS is freed by this function. */ |
| 5336 | |
| 5337 | static char * |
| 5338 | best_matching_font (f, attrs, fonts, nfonts) |
| 5339 | struct frame *f; |
| 5340 | Lisp_Object *attrs; |
| 5341 | struct font_name *fonts; |
| 5342 | int nfonts; |
| 5343 | { |
| 5344 | char *font_name; |
| 5345 | struct font_name *best; |
| 5346 | int i, pt; |
| 5347 | int specified[4]; |
| 5348 | int exact_p; |
| 5349 | |
| 5350 | if (nfonts == 0) |
| 5351 | return NULL; |
| 5352 | |
| 5353 | /* Make specified font attributes available in `specified', |
| 5354 | indexed by sort order. */ |
| 5355 | for (i = 0; i < DIM (font_sort_order); ++i) |
| 5356 | { |
| 5357 | int xlfd_idx = font_sort_order[i]; |
| 5358 | |
| 5359 | if (xlfd_idx == XLFD_SWIDTH) |
| 5360 | specified[i] = face_numeric_swidth (attrs[LFACE_SWIDTH_INDEX]); |
| 5361 | else if (xlfd_idx == XLFD_POINT_SIZE) |
| 5362 | specified[i] = pt = XFASTINT (attrs[LFACE_HEIGHT_INDEX]); |
| 5363 | else if (xlfd_idx == XLFD_WEIGHT) |
| 5364 | specified[i] = face_numeric_weight (attrs[LFACE_WEIGHT_INDEX]); |
| 5365 | else if (xlfd_idx == XLFD_SLANT) |
| 5366 | specified[i] = face_numeric_slant (attrs[LFACE_SLANT_INDEX]); |
| 5367 | else |
| 5368 | abort (); |
| 5369 | } |
| 5370 | |
| 5371 | #if SCALABLE_FONTS |
| 5372 | |
| 5373 | /* Set to 1 */ |
| 5374 | exact_p = 0; |
| 5375 | |
| 5376 | /* Start with the first non-scalable font in the list. */ |
| 5377 | for (i = 0; i < nfonts; ++i) |
| 5378 | if (!font_scalable_p (fonts + i)) |
| 5379 | break; |
| 5380 | |
| 5381 | /* Find the best match among the non-scalable fonts. */ |
| 5382 | if (i < nfonts) |
| 5383 | { |
| 5384 | best = fonts + i; |
| 5385 | |
| 5386 | for (i = 1; i < nfonts; ++i) |
| 5387 | if (!font_scalable_p (fonts + i) |
| 5388 | && better_font_p (specified, fonts + i, best, 1)) |
| 5389 | { |
| 5390 | best = fonts + i; |
| 5391 | |
| 5392 | exact_p = exact_face_match_p (specified, best); |
| 5393 | if (exact_p) |
| 5394 | break; |
| 5395 | } |
| 5396 | |
| 5397 | } |
| 5398 | else |
| 5399 | best = NULL; |
| 5400 | |
| 5401 | /* Unless we found an exact match among non-scalable fonts, see if |
| 5402 | we can find a better match among scalable fonts. */ |
| 5403 | if (!exact_p) |
| 5404 | { |
| 5405 | /* A scalable font is better if |
| 5406 | |
| 5407 | 1. its weight, slant, swidth attributes are better, or. |
| 5408 | |
| 5409 | 2. the best non-scalable font doesn't have the required |
| 5410 | point size, and the scalable fonts weight, slant, swidth |
| 5411 | isn't worse. */ |
| 5412 | |
| 5413 | int non_scalable_has_exact_height_p; |
| 5414 | |
| 5415 | if (best && best->numeric[XLFD_POINT_SIZE] == pt) |
| 5416 | non_scalable_has_exact_height_p = 1; |
| 5417 | else |
| 5418 | non_scalable_has_exact_height_p = 0; |
| 5419 | |
| 5420 | for (i = 0; i < nfonts; ++i) |
| 5421 | if (font_scalable_p (fonts + i)) |
| 5422 | { |
| 5423 | if (best == NULL |
| 5424 | || better_font_p (specified, fonts + i, best, 0) |
| 5425 | || (!non_scalable_has_exact_height_p |
| 5426 | && !better_font_p (specified, best, fonts + i, 0))) |
| 5427 | best = fonts + i; |
| 5428 | } |
| 5429 | } |
| 5430 | |
| 5431 | if (font_scalable_p (best)) |
| 5432 | font_name = build_scalable_font_name (f, best, pt); |
| 5433 | else |
| 5434 | font_name = build_font_name (best); |
| 5435 | |
| 5436 | #else /* !SCALABLE_FONTS */ |
| 5437 | |
| 5438 | /* Find the best non-scalable font. */ |
| 5439 | best = fonts; |
| 5440 | |
| 5441 | for (i = 1; i < nfonts; ++i) |
| 5442 | { |
| 5443 | xassert (!font_scalable_p (fonts + i)); |
| 5444 | if (better_font_p (specified, fonts + i, best, 1)) |
| 5445 | best = fonts + i; |
| 5446 | } |
| 5447 | |
| 5448 | font_name = build_font_name (best); |
| 5449 | |
| 5450 | #endif /* !SCALABLE_FONTS */ |
| 5451 | |
| 5452 | /* Free font_name structures. */ |
| 5453 | free_font_names (fonts, nfonts); |
| 5454 | |
| 5455 | return font_name; |
| 5456 | } |
| 5457 | |
| 5458 | |
| 5459 | /* Try to get a list of fonts on frame F with font family FAMILY and |
| 5460 | registry/encoding REGISTRY. Return in *FONTS a pointer to a vector |
| 5461 | of font_name structures for the fonts matched. Value is the number |
| 5462 | of fonts found. */ |
| 5463 | |
| 5464 | static int |
| 5465 | try_font_list (f, attrs, pattern, family, registry, fonts) |
| 5466 | struct frame *f; |
| 5467 | Lisp_Object *attrs; |
| 5468 | Lisp_Object pattern, family, registry; |
| 5469 | struct font_name **fonts; |
| 5470 | { |
| 5471 | int nfonts; |
| 5472 | |
| 5473 | if (NILP (family) && STRINGP (attrs[LFACE_FAMILY_INDEX])) |
| 5474 | family = attrs[LFACE_FAMILY_INDEX]; |
| 5475 | |
| 5476 | nfonts = font_list (f, pattern, family, registry, fonts); |
| 5477 | |
| 5478 | if (nfonts == 0 && !NILP (family)) |
| 5479 | { |
| 5480 | Lisp_Object alter; |
| 5481 | |
| 5482 | /* Try alternative font families from |
| 5483 | Vface_alternative_font_family_alist. */ |
| 5484 | alter = Fassoc (family, Vface_alternative_font_family_alist); |
| 5485 | if (CONSP (alter)) |
| 5486 | for (alter = XCDR (alter); |
| 5487 | CONSP (alter) && nfonts == 0; |
| 5488 | alter = XCDR (alter)) |
| 5489 | { |
| 5490 | if (STRINGP (XCAR (alter))) |
| 5491 | nfonts = font_list (f, Qnil, XCAR (alter), registry, fonts); |
| 5492 | } |
| 5493 | |
| 5494 | /* Try font family of the default face or "fixed". */ |
| 5495 | if (nfonts == 0) |
| 5496 | { |
| 5497 | struct face *dflt = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 5498 | if (dflt) |
| 5499 | family = dflt->lface[LFACE_FAMILY_INDEX]; |
| 5500 | else |
| 5501 | family = build_string ("fixed"); |
| 5502 | nfonts = font_list (f, Qnil, family, registry, fonts); |
| 5503 | } |
| 5504 | |
| 5505 | /* Try any family with the given registry. */ |
| 5506 | if (nfonts == 0) |
| 5507 | nfonts = font_list (f, Qnil, Qnil, registry, fonts); |
| 5508 | } |
| 5509 | |
| 5510 | return nfonts; |
| 5511 | } |
| 5512 | |
| 5513 | |
| 5514 | /* Return the fontset id of the base fontset name or alias name given |
| 5515 | by the fontset attribute of ATTRS. Value is -1 if the fontset |
| 5516 | attribute of ATTRS doesn't name a fontset. */ |
| 5517 | |
| 5518 | static int |
| 5519 | face_fontset (attrs) |
| 5520 | Lisp_Object *attrs; |
| 5521 | { |
| 5522 | Lisp_Object name; |
| 5523 | int fontset; |
| 5524 | |
| 5525 | name = attrs[LFACE_FONT_INDEX]; |
| 5526 | if (!STRINGP (name)) |
| 5527 | return -1; |
| 5528 | return fs_query_fontset (name, 0); |
| 5529 | } |
| 5530 | |
| 5531 | |
| 5532 | /* Choose a name of font to use on frame F to display character C with |
| 5533 | Lisp face attributes specified by ATTRS. The font name is |
| 5534 | determined by the font-related attributes in ATTRS and the name |
| 5535 | pattern for C in FONTSET. Value is the font name which is |
| 5536 | allocated from the heap and must be freed by the caller, or NULL if |
| 5537 | we can get no information about the font name of C. It is assured |
| 5538 | that we always get some information for a single byte |
| 5539 | character. */ |
| 5540 | |
| 5541 | static char * |
| 5542 | choose_face_font (f, attrs, fontset, c) |
| 5543 | struct frame *f; |
| 5544 | Lisp_Object *attrs; |
| 5545 | int fontset, c; |
| 5546 | { |
| 5547 | Lisp_Object pattern; |
| 5548 | char *font_name = NULL; |
| 5549 | struct font_name *fonts; |
| 5550 | int nfonts; |
| 5551 | |
| 5552 | /* Get (foundry and) family name and registry (and encoding) name of |
| 5553 | a font for C. */ |
| 5554 | pattern = fontset_font_pattern (f, fontset, c); |
| 5555 | if (NILP (pattern)) |
| 5556 | { |
| 5557 | xassert (!SINGLE_BYTE_CHAR_P (c)); |
| 5558 | return NULL; |
| 5559 | } |
| 5560 | /* If what we got is a name pattern, return it. */ |
| 5561 | if (STRINGP (pattern)) |
| 5562 | return xstrdup (XSTRING (pattern)->data); |
| 5563 | |
| 5564 | /* Family name may be specified both in ATTRS and car part of |
| 5565 | PATTERN. The former has higher priority if C is a single byte |
| 5566 | character. */ |
| 5567 | if (STRINGP (attrs[LFACE_FAMILY_INDEX]) |
| 5568 | && SINGLE_BYTE_CHAR_P (c)) |
| 5569 | XCAR (pattern) = Qnil; |
| 5570 | |
| 5571 | /* Get a list of fonts matching that pattern and choose the |
| 5572 | best match for the specified face attributes from it. */ |
| 5573 | nfonts = try_font_list (f, attrs, Qnil, XCAR (pattern), XCDR (pattern), |
| 5574 | &fonts); |
| 5575 | font_name = best_matching_font (f, attrs, fonts, nfonts); |
| 5576 | return font_name; |
| 5577 | } |
| 5578 | |
| 5579 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5580 | |
| 5581 | |
| 5582 | \f |
| 5583 | /*********************************************************************** |
| 5584 | Face Realization |
| 5585 | ***********************************************************************/ |
| 5586 | |
| 5587 | /* Realize basic faces on frame F. Value is zero if frame parameters |
| 5588 | of F don't contain enough information needed to realize the default |
| 5589 | face. */ |
| 5590 | |
| 5591 | static int |
| 5592 | realize_basic_faces (f) |
| 5593 | struct frame *f; |
| 5594 | { |
| 5595 | int success_p = 0; |
| 5596 | |
| 5597 | /* Block input there so that we won't be surprised by an X expose |
| 5598 | event, for instance without having the faces set up. */ |
| 5599 | BLOCK_INPUT; |
| 5600 | |
| 5601 | if (realize_default_face (f)) |
| 5602 | { |
| 5603 | realize_named_face (f, Qmode_line, MODE_LINE_FACE_ID); |
| 5604 | realize_named_face (f, Qtool_bar, TOOL_BAR_FACE_ID); |
| 5605 | realize_named_face (f, Qfringe, BITMAP_AREA_FACE_ID); |
| 5606 | realize_named_face (f, Qheader_line, HEADER_LINE_FACE_ID); |
| 5607 | realize_named_face (f, Qscroll_bar, SCROLL_BAR_FACE_ID); |
| 5608 | realize_named_face (f, Qborder, BORDER_FACE_ID); |
| 5609 | realize_named_face (f, Qcursor, CURSOR_FACE_ID); |
| 5610 | realize_named_face (f, Qmouse, MOUSE_FACE_ID); |
| 5611 | realize_named_face (f, Qmenu, MENU_FACE_ID); |
| 5612 | success_p = 1; |
| 5613 | } |
| 5614 | |
| 5615 | UNBLOCK_INPUT; |
| 5616 | return success_p; |
| 5617 | } |
| 5618 | |
| 5619 | |
| 5620 | /* Realize the default face on frame F. If the face is not fully |
| 5621 | specified, make it fully-specified. Attributes of the default face |
| 5622 | that are not explicitly specified are taken from frame parameters. */ |
| 5623 | |
| 5624 | static int |
| 5625 | realize_default_face (f) |
| 5626 | struct frame *f; |
| 5627 | { |
| 5628 | struct face_cache *c = FRAME_FACE_CACHE (f); |
| 5629 | Lisp_Object lface; |
| 5630 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 5631 | Lisp_Object frame_font; |
| 5632 | struct face *face; |
| 5633 | int fontset; |
| 5634 | |
| 5635 | /* If the `default' face is not yet known, create it. */ |
| 5636 | lface = lface_from_face_name (f, Qdefault, 0); |
| 5637 | if (NILP (lface)) |
| 5638 | { |
| 5639 | Lisp_Object frame; |
| 5640 | XSETFRAME (frame, f); |
| 5641 | lface = Finternal_make_lisp_face (Qdefault, frame); |
| 5642 | } |
| 5643 | |
| 5644 | #ifdef HAVE_WINDOW_SYSTEM |
| 5645 | if (FRAME_WINDOW_P (f)) |
| 5646 | { |
| 5647 | /* Set frame_font to the value of the `font' frame parameter. */ |
| 5648 | frame_font = Fassq (Qfont, f->param_alist); |
| 5649 | xassert (CONSP (frame_font) && STRINGP (XCDR (frame_font))); |
| 5650 | frame_font = XCDR (frame_font); |
| 5651 | set_lface_from_font_name (f, lface, frame_font, 0, 1); |
| 5652 | } |
| 5653 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5654 | |
| 5655 | if (!FRAME_WINDOW_P (f)) |
| 5656 | { |
| 5657 | LFACE_FAMILY (lface) = build_string ("default"); |
| 5658 | LFACE_SWIDTH (lface) = Qnormal; |
| 5659 | LFACE_HEIGHT (lface) = make_number (1); |
| 5660 | LFACE_WEIGHT (lface) = Qnormal; |
| 5661 | LFACE_SLANT (lface) = Qnormal; |
| 5662 | } |
| 5663 | |
| 5664 | if (UNSPECIFIEDP (LFACE_UNDERLINE (lface))) |
| 5665 | LFACE_UNDERLINE (lface) = Qnil; |
| 5666 | |
| 5667 | if (UNSPECIFIEDP (LFACE_OVERLINE (lface))) |
| 5668 | LFACE_OVERLINE (lface) = Qnil; |
| 5669 | |
| 5670 | if (UNSPECIFIEDP (LFACE_STRIKE_THROUGH (lface))) |
| 5671 | LFACE_STRIKE_THROUGH (lface) = Qnil; |
| 5672 | |
| 5673 | if (UNSPECIFIEDP (LFACE_BOX (lface))) |
| 5674 | LFACE_BOX (lface) = Qnil; |
| 5675 | |
| 5676 | if (UNSPECIFIEDP (LFACE_INVERSE (lface))) |
| 5677 | LFACE_INVERSE (lface) = Qnil; |
| 5678 | |
| 5679 | if (UNSPECIFIEDP (LFACE_FOREGROUND (lface))) |
| 5680 | { |
| 5681 | /* This function is called so early that colors are not yet |
| 5682 | set in the frame parameter list. */ |
| 5683 | Lisp_Object color = Fassq (Qforeground_color, f->param_alist); |
| 5684 | |
| 5685 | if (CONSP (color) && STRINGP (XCDR (color))) |
| 5686 | LFACE_FOREGROUND (lface) = XCDR (color); |
| 5687 | else if (FRAME_WINDOW_P (f)) |
| 5688 | return 0; |
| 5689 | else if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f)) |
| 5690 | LFACE_FOREGROUND (lface) = build_string (unspecified_fg); |
| 5691 | else |
| 5692 | abort (); |
| 5693 | } |
| 5694 | |
| 5695 | if (UNSPECIFIEDP (LFACE_BACKGROUND (lface))) |
| 5696 | { |
| 5697 | /* This function is called so early that colors are not yet |
| 5698 | set in the frame parameter list. */ |
| 5699 | Lisp_Object color = Fassq (Qbackground_color, f->param_alist); |
| 5700 | if (CONSP (color) && STRINGP (XCDR (color))) |
| 5701 | LFACE_BACKGROUND (lface) = XCDR (color); |
| 5702 | else if (FRAME_WINDOW_P (f)) |
| 5703 | return 0; |
| 5704 | else if (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f)) |
| 5705 | LFACE_BACKGROUND (lface) = build_string (unspecified_bg); |
| 5706 | else |
| 5707 | abort (); |
| 5708 | } |
| 5709 | |
| 5710 | if (UNSPECIFIEDP (LFACE_STIPPLE (lface))) |
| 5711 | LFACE_STIPPLE (lface) = Qnil; |
| 5712 | |
| 5713 | /* Realize the face; it must be fully-specified now. */ |
| 5714 | xassert (lface_fully_specified_p (XVECTOR (lface)->contents)); |
| 5715 | check_lface (lface); |
| 5716 | bcopy (XVECTOR (lface)->contents, attrs, sizeof attrs); |
| 5717 | face = realize_face (c, attrs, 0, NULL, DEFAULT_FACE_ID); |
| 5718 | return 1; |
| 5719 | } |
| 5720 | |
| 5721 | |
| 5722 | /* Realize basic faces other than the default face in face cache C. |
| 5723 | SYMBOL is the face name, ID is the face id the realized face must |
| 5724 | have. The default face must have been realized already. */ |
| 5725 | |
| 5726 | static void |
| 5727 | realize_named_face (f, symbol, id) |
| 5728 | struct frame *f; |
| 5729 | Lisp_Object symbol; |
| 5730 | int id; |
| 5731 | { |
| 5732 | struct face_cache *c = FRAME_FACE_CACHE (f); |
| 5733 | Lisp_Object lface = lface_from_face_name (f, symbol, 0); |
| 5734 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 5735 | Lisp_Object symbol_attrs[LFACE_VECTOR_SIZE]; |
| 5736 | struct face *new_face; |
| 5737 | |
| 5738 | /* The default face must exist and be fully specified. */ |
| 5739 | get_lface_attributes (f, Qdefault, attrs, 1); |
| 5740 | check_lface_attrs (attrs); |
| 5741 | xassert (lface_fully_specified_p (attrs)); |
| 5742 | |
| 5743 | /* If SYMBOL isn't know as a face, create it. */ |
| 5744 | if (NILP (lface)) |
| 5745 | { |
| 5746 | Lisp_Object frame; |
| 5747 | XSETFRAME (frame, f); |
| 5748 | lface = Finternal_make_lisp_face (symbol, frame); |
| 5749 | } |
| 5750 | |
| 5751 | /* Merge SYMBOL's face with the default face. */ |
| 5752 | get_lface_attributes (f, symbol, symbol_attrs, 1); |
| 5753 | merge_face_vectors (symbol_attrs, attrs); |
| 5754 | |
| 5755 | /* Realize the face. */ |
| 5756 | new_face = realize_face (c, attrs, 0, NULL, id); |
| 5757 | } |
| 5758 | |
| 5759 | |
| 5760 | /* Realize the fully-specified face with attributes ATTRS in face |
| 5761 | cache CACHE for character C. If C is a multibyte character, |
| 5762 | BASE_FACE is a face for ASCII characters that has the same |
| 5763 | attributes. Otherwise, BASE_FACE is ignored. If FORMER_FACE_ID is |
| 5764 | non-negative, it is an ID of face to remove before caching the new |
| 5765 | face. Value is a pointer to the newly created realized face. */ |
| 5766 | |
| 5767 | static struct face * |
| 5768 | realize_face (cache, attrs, c, base_face, former_face_id) |
| 5769 | struct face_cache *cache; |
| 5770 | Lisp_Object *attrs; |
| 5771 | int c; |
| 5772 | struct face *base_face; |
| 5773 | int former_face_id; |
| 5774 | { |
| 5775 | struct face *face; |
| 5776 | |
| 5777 | /* LFACE must be fully specified. */ |
| 5778 | xassert (cache != NULL); |
| 5779 | check_lface_attrs (attrs); |
| 5780 | |
| 5781 | if (former_face_id >= 0 && cache->used > former_face_id) |
| 5782 | { |
| 5783 | /* Remove the former face. */ |
| 5784 | struct face *former_face = cache->faces_by_id[former_face_id]; |
| 5785 | uncache_face (cache, former_face); |
| 5786 | free_realized_face (cache->f, former_face); |
| 5787 | } |
| 5788 | |
| 5789 | if (FRAME_WINDOW_P (cache->f)) |
| 5790 | face = realize_x_face (cache, attrs, c, base_face); |
| 5791 | else if (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f)) |
| 5792 | face = realize_tty_face (cache, attrs, c); |
| 5793 | else |
| 5794 | abort (); |
| 5795 | |
| 5796 | /* Insert the new face. */ |
| 5797 | cache_face (cache, face, lface_hash (attrs)); |
| 5798 | #ifdef HAVE_WINDOW_SYSTEM |
| 5799 | if (FRAME_X_P (cache->f) && face->font == NULL) |
| 5800 | load_face_font (cache->f, face, c); |
| 5801 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5802 | return face; |
| 5803 | } |
| 5804 | |
| 5805 | |
| 5806 | /* Realize the fully-specified face with attributes ATTRS in face |
| 5807 | cache CACHE for character C. Do it for X frame CACHE->f. If C is |
| 5808 | a multibyte character, BASE_FACE is a face for ASCII characters |
| 5809 | that has the same attributes. Otherwise, BASE_FACE is ignored. If |
| 5810 | the new face doesn't share font with the default face, a fontname |
| 5811 | is allocated from the heap and set in `font_name' of the new face, |
| 5812 | but it is not yet loaded here. Value is a pointer to the newly |
| 5813 | created realized face. */ |
| 5814 | |
| 5815 | static struct face * |
| 5816 | realize_x_face (cache, attrs, c, base_face) |
| 5817 | struct face_cache *cache; |
| 5818 | Lisp_Object *attrs; |
| 5819 | int c; |
| 5820 | struct face *base_face; |
| 5821 | { |
| 5822 | #ifdef HAVE_WINDOW_SYSTEM |
| 5823 | struct face *face, *default_face; |
| 5824 | struct frame *f; |
| 5825 | Lisp_Object stipple, overline, strike_through, box; |
| 5826 | |
| 5827 | xassert (FRAME_WINDOW_P (cache->f)); |
| 5828 | xassert (SINGLE_BYTE_CHAR_P (c) |
| 5829 | || (base_face && base_face->ascii_face == base_face)); |
| 5830 | |
| 5831 | /* Allocate a new realized face. */ |
| 5832 | face = make_realized_face (attrs); |
| 5833 | |
| 5834 | f = cache->f; |
| 5835 | |
| 5836 | /* If C is a multibyte character, we share all face attirbutes with |
| 5837 | BASE_FACE including the realized fontset. But, we must load a |
| 5838 | different font. */ |
| 5839 | if (!SINGLE_BYTE_CHAR_P (c)) |
| 5840 | { |
| 5841 | bcopy (base_face, face, sizeof *face); |
| 5842 | face->gc = 0; |
| 5843 | face->font = NULL; /* to force realize_face to load font */ |
| 5844 | return face; |
| 5845 | } |
| 5846 | |
| 5847 | /* Now we are realizing a face for ASCII (and unibyte) characters. */ |
| 5848 | |
| 5849 | /* Determine the font to use. Most of the time, the font will be |
| 5850 | the same as the font of the default face, so try that first. */ |
| 5851 | default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 5852 | if (default_face |
| 5853 | && FACE_SUITABLE_FOR_CHAR_P (default_face, c) |
| 5854 | && lface_same_font_attributes_p (default_face->lface, attrs)) |
| 5855 | { |
| 5856 | face->font = default_face->font; |
| 5857 | face->fontset = default_face->fontset; |
| 5858 | face->font_info_id = default_face->font_info_id; |
| 5859 | face->font_name = default_face->font_name; |
| 5860 | face->ascii_face = face; |
| 5861 | |
| 5862 | /* But, as we can't share the fontset, make a new realized |
| 5863 | fontset that has the same base fontset as of the default |
| 5864 | face. */ |
| 5865 | face->fontset |
| 5866 | = make_fontset_for_ascii_face (f, default_face->fontset); |
| 5867 | } |
| 5868 | else |
| 5869 | { |
| 5870 | /* If the face attribute ATTRS specifies a fontset, use it as |
| 5871 | the base of a new realized fontset. Otherwise, use the |
| 5872 | default fontset as the base. The base determines registry |
| 5873 | and encoding of a font. It may also determine foundry and |
| 5874 | family. The other fields of font name pattern are |
| 5875 | constructed from ATTRS. */ |
| 5876 | face->fontset |
| 5877 | = make_fontset_for_ascii_face (f, face_fontset (attrs)); |
| 5878 | face->font = NULL; /* to force realize_face to load font */ |
| 5879 | } |
| 5880 | |
| 5881 | /* Load colors, and set remaining attributes. */ |
| 5882 | |
| 5883 | load_face_colors (f, face, attrs); |
| 5884 | |
| 5885 | /* Set up box. */ |
| 5886 | box = attrs[LFACE_BOX_INDEX]; |
| 5887 | if (STRINGP (box)) |
| 5888 | { |
| 5889 | /* A simple box of line width 1 drawn in color given by |
| 5890 | the string. */ |
| 5891 | face->box_color = load_color (f, face, attrs[LFACE_BOX_INDEX], |
| 5892 | LFACE_BOX_INDEX); |
| 5893 | face->box = FACE_SIMPLE_BOX; |
| 5894 | face->box_line_width = 1; |
| 5895 | } |
| 5896 | else if (INTEGERP (box)) |
| 5897 | { |
| 5898 | /* Simple box of specified line width in foreground color of the |
| 5899 | face. */ |
| 5900 | xassert (XINT (box) > 0); |
| 5901 | face->box = FACE_SIMPLE_BOX; |
| 5902 | face->box_line_width = XFASTINT (box); |
| 5903 | face->box_color = face->foreground; |
| 5904 | face->box_color_defaulted_p = 1; |
| 5905 | } |
| 5906 | else if (CONSP (box)) |
| 5907 | { |
| 5908 | /* `(:width WIDTH :color COLOR :shadow SHADOW)'. SHADOW |
| 5909 | being one of `raised' or `sunken'. */ |
| 5910 | face->box = FACE_SIMPLE_BOX; |
| 5911 | face->box_color = face->foreground; |
| 5912 | face->box_color_defaulted_p = 1; |
| 5913 | face->box_line_width = 1; |
| 5914 | |
| 5915 | while (CONSP (box)) |
| 5916 | { |
| 5917 | Lisp_Object keyword, value; |
| 5918 | |
| 5919 | keyword = XCAR (box); |
| 5920 | box = XCDR (box); |
| 5921 | |
| 5922 | if (!CONSP (box)) |
| 5923 | break; |
| 5924 | value = XCAR (box); |
| 5925 | box = XCDR (box); |
| 5926 | |
| 5927 | if (EQ (keyword, QCline_width)) |
| 5928 | { |
| 5929 | if (INTEGERP (value) && XINT (value) > 0) |
| 5930 | face->box_line_width = XFASTINT (value); |
| 5931 | } |
| 5932 | else if (EQ (keyword, QCcolor)) |
| 5933 | { |
| 5934 | if (STRINGP (value)) |
| 5935 | { |
| 5936 | face->box_color = load_color (f, face, value, |
| 5937 | LFACE_BOX_INDEX); |
| 5938 | face->use_box_color_for_shadows_p = 1; |
| 5939 | } |
| 5940 | } |
| 5941 | else if (EQ (keyword, QCstyle)) |
| 5942 | { |
| 5943 | if (EQ (value, Qreleased_button)) |
| 5944 | face->box = FACE_RAISED_BOX; |
| 5945 | else if (EQ (value, Qpressed_button)) |
| 5946 | face->box = FACE_SUNKEN_BOX; |
| 5947 | } |
| 5948 | } |
| 5949 | } |
| 5950 | |
| 5951 | /* Text underline, overline, strike-through. */ |
| 5952 | |
| 5953 | if (EQ (attrs[LFACE_UNDERLINE_INDEX], Qt)) |
| 5954 | { |
| 5955 | /* Use default color (same as foreground color). */ |
| 5956 | face->underline_p = 1; |
| 5957 | face->underline_defaulted_p = 1; |
| 5958 | face->underline_color = 0; |
| 5959 | } |
| 5960 | else if (STRINGP (attrs[LFACE_UNDERLINE_INDEX])) |
| 5961 | { |
| 5962 | /* Use specified color. */ |
| 5963 | face->underline_p = 1; |
| 5964 | face->underline_defaulted_p = 0; |
| 5965 | face->underline_color |
| 5966 | = load_color (f, face, attrs[LFACE_UNDERLINE_INDEX], |
| 5967 | LFACE_UNDERLINE_INDEX); |
| 5968 | } |
| 5969 | else if (NILP (attrs[LFACE_UNDERLINE_INDEX])) |
| 5970 | { |
| 5971 | face->underline_p = 0; |
| 5972 | face->underline_defaulted_p = 0; |
| 5973 | face->underline_color = 0; |
| 5974 | } |
| 5975 | |
| 5976 | overline = attrs[LFACE_OVERLINE_INDEX]; |
| 5977 | if (STRINGP (overline)) |
| 5978 | { |
| 5979 | face->overline_color |
| 5980 | = load_color (f, face, attrs[LFACE_OVERLINE_INDEX], |
| 5981 | LFACE_OVERLINE_INDEX); |
| 5982 | face->overline_p = 1; |
| 5983 | } |
| 5984 | else if (EQ (overline, Qt)) |
| 5985 | { |
| 5986 | face->overline_color = face->foreground; |
| 5987 | face->overline_color_defaulted_p = 1; |
| 5988 | face->overline_p = 1; |
| 5989 | } |
| 5990 | |
| 5991 | strike_through = attrs[LFACE_STRIKE_THROUGH_INDEX]; |
| 5992 | if (STRINGP (strike_through)) |
| 5993 | { |
| 5994 | face->strike_through_color |
| 5995 | = load_color (f, face, attrs[LFACE_STRIKE_THROUGH_INDEX], |
| 5996 | LFACE_STRIKE_THROUGH_INDEX); |
| 5997 | face->strike_through_p = 1; |
| 5998 | } |
| 5999 | else if (EQ (strike_through, Qt)) |
| 6000 | { |
| 6001 | face->strike_through_color = face->foreground; |
| 6002 | face->strike_through_color_defaulted_p = 1; |
| 6003 | face->strike_through_p = 1; |
| 6004 | } |
| 6005 | |
| 6006 | stipple = attrs[LFACE_STIPPLE_INDEX]; |
| 6007 | if (!NILP (stipple)) |
| 6008 | face->stipple = load_pixmap (f, stipple, &face->pixmap_w, &face->pixmap_h); |
| 6009 | |
| 6010 | xassert (FACE_SUITABLE_FOR_CHAR_P (face, c)); |
| 6011 | return face; |
| 6012 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 6013 | } |
| 6014 | |
| 6015 | |
| 6016 | /* Realize the fully-specified face with attributes ATTRS in face |
| 6017 | cache CACHE for character C. Do it for TTY frame CACHE->f. Value is a |
| 6018 | pointer to the newly created realized face. */ |
| 6019 | |
| 6020 | static struct face * |
| 6021 | realize_tty_face (cache, attrs, c) |
| 6022 | struct face_cache *cache; |
| 6023 | Lisp_Object *attrs; |
| 6024 | int c; |
| 6025 | { |
| 6026 | struct face *face; |
| 6027 | int weight, slant; |
| 6028 | Lisp_Object color; |
| 6029 | Lisp_Object tty_defined_color_alist |
| 6030 | = find_symbol_value (intern ("tty-defined-color-alist")); |
| 6031 | Lisp_Object tty_color_alist = intern ("tty-color-alist"); |
| 6032 | Lisp_Object frame; |
| 6033 | int face_colors_defaulted = 0; |
| 6034 | |
| 6035 | /* Frame must be a termcap frame. */ |
| 6036 | xassert (FRAME_TERMCAP_P (cache->f) || FRAME_MSDOS_P (cache->f)); |
| 6037 | |
| 6038 | /* Allocate a new realized face. */ |
| 6039 | face = make_realized_face (attrs); |
| 6040 | face->font_name = FRAME_MSDOS_P (cache->f) ? "ms-dos" : "tty"; |
| 6041 | |
| 6042 | /* Map face attributes to TTY appearances. We map slant to |
| 6043 | dimmed text because we want italic text to appear differently |
| 6044 | and because dimmed text is probably used infrequently. */ |
| 6045 | weight = face_numeric_weight (attrs[LFACE_WEIGHT_INDEX]); |
| 6046 | slant = face_numeric_slant (attrs[LFACE_SLANT_INDEX]); |
| 6047 | |
| 6048 | if (weight > XLFD_WEIGHT_MEDIUM) |
| 6049 | face->tty_bold_p = 1; |
| 6050 | if (weight < XLFD_WEIGHT_MEDIUM || slant != XLFD_SLANT_ROMAN) |
| 6051 | face->tty_dim_p = 1; |
| 6052 | if (!NILP (attrs[LFACE_UNDERLINE_INDEX])) |
| 6053 | face->tty_underline_p = 1; |
| 6054 | if (!NILP (attrs[LFACE_INVERSE_INDEX])) |
| 6055 | face->tty_reverse_p = 1; |
| 6056 | |
| 6057 | /* Map color names to color indices. */ |
| 6058 | face->foreground = FACE_TTY_DEFAULT_FG_COLOR; |
| 6059 | face->background = FACE_TTY_DEFAULT_BG_COLOR; |
| 6060 | |
| 6061 | XSETFRAME (frame, cache->f); |
| 6062 | color = attrs[LFACE_FOREGROUND_INDEX]; |
| 6063 | if (STRINGP (color) |
| 6064 | && XSTRING (color)->size |
| 6065 | && CONSP (tty_defined_color_alist) |
| 6066 | && (color = Fassoc (color, call1 (tty_color_alist, frame)), |
| 6067 | CONSP (color))) |
| 6068 | /* Associations in tty-defined-color-alist are of the form |
| 6069 | (NAME INDEX R G B). We need the INDEX part. */ |
| 6070 | face->foreground = XINT (XCAR (XCDR (color))); |
| 6071 | |
| 6072 | if (face->foreground == FACE_TTY_DEFAULT_FG_COLOR |
| 6073 | && STRINGP (attrs[LFACE_FOREGROUND_INDEX])) |
| 6074 | { |
| 6075 | face->foreground = load_color (cache->f, face, |
| 6076 | attrs[LFACE_FOREGROUND_INDEX], |
| 6077 | LFACE_FOREGROUND_INDEX); |
| 6078 | |
| 6079 | #if defined (MSDOS) || defined (WINDOWSNT) |
| 6080 | /* If the foreground of the default face is the default color, |
| 6081 | use the foreground color defined by the frame. */ |
| 6082 | #ifdef MSDOS |
| 6083 | if (FRAME_MSDOS_P (cache->f)) |
| 6084 | { |
| 6085 | #endif /* MSDOS */ |
| 6086 | |
| 6087 | if (face->foreground == FACE_TTY_DEFAULT_FG_COLOR |
| 6088 | || face->foreground == FACE_TTY_DEFAULT_COLOR) |
| 6089 | { |
| 6090 | face->foreground = FRAME_FOREGROUND_PIXEL (cache->f); |
| 6091 | attrs[LFACE_FOREGROUND_INDEX] = |
| 6092 | tty_color_name (cache->f, face->foreground); |
| 6093 | face_colors_defaulted = 1; |
| 6094 | } |
| 6095 | else if (face->foreground == FACE_TTY_DEFAULT_BG_COLOR) |
| 6096 | { |
| 6097 | face->foreground = FRAME_BACKGROUND_PIXEL (cache->f); |
| 6098 | attrs[LFACE_FOREGROUND_INDEX] = |
| 6099 | tty_color_name (cache->f, face->foreground); |
| 6100 | face_colors_defaulted = 1; |
| 6101 | } |
| 6102 | #ifdef MSDOS |
| 6103 | } |
| 6104 | #endif |
| 6105 | #endif /* MSDOS or WINDOWSNT */ |
| 6106 | } |
| 6107 | |
| 6108 | color = attrs[LFACE_BACKGROUND_INDEX]; |
| 6109 | if (STRINGP (color) |
| 6110 | && XSTRING (color)->size |
| 6111 | && CONSP (tty_defined_color_alist) |
| 6112 | && (color = Fassoc (color, call1 (tty_color_alist, frame)), |
| 6113 | CONSP (color))) |
| 6114 | /* Associations in tty-defined-color-alist are of the form |
| 6115 | (NAME INDEX R G B). We need the INDEX part. */ |
| 6116 | face->background = XINT (XCAR (XCDR (color))); |
| 6117 | |
| 6118 | if (face->background == FACE_TTY_DEFAULT_BG_COLOR |
| 6119 | && STRINGP (attrs[LFACE_BACKGROUND_INDEX])) |
| 6120 | { |
| 6121 | face->background = load_color (cache->f, face, |
| 6122 | attrs[LFACE_BACKGROUND_INDEX], |
| 6123 | LFACE_BACKGROUND_INDEX); |
| 6124 | #if defined (MSDOS) || defined (WINDOWSNT) |
| 6125 | /* If the background of the default face is the default color, |
| 6126 | use the background color defined by the frame. */ |
| 6127 | #ifdef MSDOS |
| 6128 | if (FRAME_MSDOS_P (cache->f)) |
| 6129 | { |
| 6130 | #endif /* MSDOS */ |
| 6131 | |
| 6132 | if (face->background == FACE_TTY_DEFAULT_BG_COLOR |
| 6133 | || face->background == FACE_TTY_DEFAULT_COLOR) |
| 6134 | { |
| 6135 | face->background = FRAME_BACKGROUND_PIXEL (cache->f); |
| 6136 | attrs[LFACE_BACKGROUND_INDEX] = |
| 6137 | tty_color_name (cache->f, face->background); |
| 6138 | face_colors_defaulted = 1; |
| 6139 | } |
| 6140 | else if (face->background == FACE_TTY_DEFAULT_FG_COLOR) |
| 6141 | { |
| 6142 | face->background = FRAME_FOREGROUND_PIXEL (cache->f); |
| 6143 | attrs[LFACE_BACKGROUND_INDEX] = |
| 6144 | tty_color_name (cache->f, face->background); |
| 6145 | face_colors_defaulted = 1; |
| 6146 | } |
| 6147 | #ifdef MSDOS |
| 6148 | } |
| 6149 | #endif |
| 6150 | #endif /* MSDOS or WINDOWSNT */ |
| 6151 | } |
| 6152 | |
| 6153 | /* Swap colors if face is inverse-video. If the colors are taken |
| 6154 | from the frame colors, they are already inverted, since the |
| 6155 | frame-creation function calls x-handle-reverse-video. */ |
| 6156 | if (face->tty_reverse_p && !face_colors_defaulted) |
| 6157 | { |
| 6158 | unsigned long tem = face->foreground; |
| 6159 | |
| 6160 | face->foreground = face->background; |
| 6161 | face->background = tem; |
| 6162 | } |
| 6163 | |
| 6164 | if (tty_suppress_bold_inverse_default_colors_p |
| 6165 | && face->tty_bold_p |
| 6166 | && face->background == FACE_TTY_DEFAULT_FG_COLOR |
| 6167 | && face->foreground == FACE_TTY_DEFAULT_BG_COLOR) |
| 6168 | face->tty_bold_p = 0; |
| 6169 | |
| 6170 | return face; |
| 6171 | } |
| 6172 | |
| 6173 | |
| 6174 | DEFUN ("tty-suppress-bold-inverse-default-colors", |
| 6175 | Ftty_suppress_bold_inverse_default_colors, |
| 6176 | Stty_suppress_bold_inverse_default_colors, 1, 1, 0, |
| 6177 | "Suppress/allow boldness of faces with inverse default colors.\n\ |
| 6178 | SUPPRESS non-nil means suppress it.\n\ |
| 6179 | This affects bold faces whose foreground is the default background color\n\ |
| 6180 | of the display and whose background is the default foreground color.\n\ |
| 6181 | For such faces, no bold text will be displayed.") |
| 6182 | (suppress) |
| 6183 | Lisp_Object suppress; |
| 6184 | { |
| 6185 | tty_suppress_bold_inverse_default_colors_p = !NILP (suppress); |
| 6186 | ++face_change_count; |
| 6187 | return suppress; |
| 6188 | } |
| 6189 | |
| 6190 | |
| 6191 | \f |
| 6192 | /*********************************************************************** |
| 6193 | Computing Faces |
| 6194 | ***********************************************************************/ |
| 6195 | |
| 6196 | /* Return the ID of the face to use to display character CH with face |
| 6197 | property PROP on frame F in current_buffer. */ |
| 6198 | |
| 6199 | int |
| 6200 | compute_char_face (f, ch, prop) |
| 6201 | struct frame *f; |
| 6202 | int ch; |
| 6203 | Lisp_Object prop; |
| 6204 | { |
| 6205 | int face_id; |
| 6206 | |
| 6207 | if (NILP (current_buffer->enable_multibyte_characters)) |
| 6208 | ch = -1; |
| 6209 | |
| 6210 | if (NILP (prop)) |
| 6211 | { |
| 6212 | struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 6213 | face_id = FACE_FOR_CHAR (f, face, ch); |
| 6214 | } |
| 6215 | else |
| 6216 | { |
| 6217 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 6218 | struct face *default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 6219 | bcopy (default_face->lface, attrs, sizeof attrs); |
| 6220 | merge_face_vector_with_property (f, attrs, prop); |
| 6221 | face_id = lookup_face (f, attrs, ch, NULL); |
| 6222 | } |
| 6223 | |
| 6224 | return face_id; |
| 6225 | } |
| 6226 | |
| 6227 | |
| 6228 | /* Return the face ID associated with buffer position POS for |
| 6229 | displaying ASCII characters. Return in *ENDPTR the position at |
| 6230 | which a different face is needed, as far as text properties and |
| 6231 | overlays are concerned. W is a window displaying current_buffer. |
| 6232 | |
| 6233 | REGION_BEG, REGION_END delimit the region, so it can be |
| 6234 | highlighted. |
| 6235 | |
| 6236 | LIMIT is a position not to scan beyond. That is to limit the time |
| 6237 | this function can take. |
| 6238 | |
| 6239 | If MOUSE is non-zero, use the character's mouse-face, not its face. |
| 6240 | |
| 6241 | The face returned is suitable for displaying ASCII characters. */ |
| 6242 | |
| 6243 | int |
| 6244 | face_at_buffer_position (w, pos, region_beg, region_end, |
| 6245 | endptr, limit, mouse) |
| 6246 | struct window *w; |
| 6247 | int pos; |
| 6248 | int region_beg, region_end; |
| 6249 | int *endptr; |
| 6250 | int limit; |
| 6251 | int mouse; |
| 6252 | { |
| 6253 | struct frame *f = XFRAME (w->frame); |
| 6254 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 6255 | Lisp_Object prop, position; |
| 6256 | int i, noverlays; |
| 6257 | Lisp_Object *overlay_vec; |
| 6258 | Lisp_Object frame; |
| 6259 | int endpos; |
| 6260 | Lisp_Object propname = mouse ? Qmouse_face : Qface; |
| 6261 | Lisp_Object limit1, end; |
| 6262 | struct face *default_face; |
| 6263 | int multibyte_p = !NILP (current_buffer->enable_multibyte_characters); |
| 6264 | |
| 6265 | /* W must display the current buffer. We could write this function |
| 6266 | to use the frame and buffer of W, but right now it doesn't. */ |
| 6267 | /* xassert (XBUFFER (w->buffer) == current_buffer); */ |
| 6268 | |
| 6269 | XSETFRAME (frame, f); |
| 6270 | XSETFASTINT (position, pos); |
| 6271 | |
| 6272 | endpos = ZV; |
| 6273 | if (pos < region_beg && region_beg < endpos) |
| 6274 | endpos = region_beg; |
| 6275 | |
| 6276 | /* Get the `face' or `mouse_face' text property at POS, and |
| 6277 | determine the next position at which the property changes. */ |
| 6278 | prop = Fget_text_property (position, propname, w->buffer); |
| 6279 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); |
| 6280 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); |
| 6281 | if (INTEGERP (end)) |
| 6282 | endpos = XINT (end); |
| 6283 | |
| 6284 | /* Look at properties from overlays. */ |
| 6285 | { |
| 6286 | int next_overlay; |
| 6287 | int len; |
| 6288 | |
| 6289 | /* First try with room for 40 overlays. */ |
| 6290 | len = 40; |
| 6291 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); |
| 6292 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
| 6293 | &next_overlay, NULL); |
| 6294 | |
| 6295 | /* If there are more than 40, make enough space for all, and try |
| 6296 | again. */ |
| 6297 | if (noverlays > len) |
| 6298 | { |
| 6299 | len = noverlays; |
| 6300 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); |
| 6301 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, |
| 6302 | &next_overlay, NULL); |
| 6303 | } |
| 6304 | |
| 6305 | if (next_overlay < endpos) |
| 6306 | endpos = next_overlay; |
| 6307 | } |
| 6308 | |
| 6309 | *endptr = endpos; |
| 6310 | |
| 6311 | default_face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 6312 | |
| 6313 | /* Optimize common cases where we can use the default face. */ |
| 6314 | if (noverlays == 0 |
| 6315 | && NILP (prop) |
| 6316 | && !(pos >= region_beg && pos < region_end)) |
| 6317 | return DEFAULT_FACE_ID; |
| 6318 | |
| 6319 | /* Begin with attributes from the default face. */ |
| 6320 | bcopy (default_face->lface, attrs, sizeof attrs); |
| 6321 | |
| 6322 | /* Merge in attributes specified via text properties. */ |
| 6323 | if (!NILP (prop)) |
| 6324 | merge_face_vector_with_property (f, attrs, prop); |
| 6325 | |
| 6326 | /* Now merge the overlay data. */ |
| 6327 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
| 6328 | for (i = 0; i < noverlays; i++) |
| 6329 | { |
| 6330 | Lisp_Object oend; |
| 6331 | int oendpos; |
| 6332 | |
| 6333 | prop = Foverlay_get (overlay_vec[i], propname); |
| 6334 | if (!NILP (prop)) |
| 6335 | merge_face_vector_with_property (f, attrs, prop); |
| 6336 | |
| 6337 | oend = OVERLAY_END (overlay_vec[i]); |
| 6338 | oendpos = OVERLAY_POSITION (oend); |
| 6339 | if (oendpos < endpos) |
| 6340 | endpos = oendpos; |
| 6341 | } |
| 6342 | |
| 6343 | /* If in the region, merge in the region face. */ |
| 6344 | if (pos >= region_beg && pos < region_end) |
| 6345 | { |
| 6346 | Lisp_Object region_face = lface_from_face_name (f, Qregion, 0); |
| 6347 | merge_face_vectors (XVECTOR (region_face)->contents, attrs); |
| 6348 | |
| 6349 | if (region_end < endpos) |
| 6350 | endpos = region_end; |
| 6351 | } |
| 6352 | |
| 6353 | *endptr = endpos; |
| 6354 | |
| 6355 | /* Look up a realized face with the given face attributes, |
| 6356 | or realize a new one for ASCII characters. */ |
| 6357 | return lookup_face (f, attrs, 0, NULL); |
| 6358 | } |
| 6359 | |
| 6360 | |
| 6361 | /* Compute the face at character position POS in Lisp string STRING on |
| 6362 | window W, for ASCII characters. |
| 6363 | |
| 6364 | If STRING is an overlay string, it comes from position BUFPOS in |
| 6365 | current_buffer, otherwise BUFPOS is zero to indicate that STRING is |
| 6366 | not an overlay string. W must display the current buffer. |
| 6367 | REGION_BEG and REGION_END give the start and end positions of the |
| 6368 | region; both are -1 if no region is visible. BASE_FACE_ID is the |
| 6369 | id of the basic face to merge with. It is usually equal to |
| 6370 | DEFAULT_FACE_ID but can be MODE_LINE_FACE_ID or HEADER_LINE_FACE_ID |
| 6371 | for strings displayed in the mode or top line. |
| 6372 | |
| 6373 | Set *ENDPTR to the next position where to check for faces in |
| 6374 | STRING; -1 if the face is constant from POS to the end of the |
| 6375 | string. |
| 6376 | |
| 6377 | Value is the id of the face to use. The face returned is suitable |
| 6378 | for displaying ASCII characters. */ |
| 6379 | |
| 6380 | int |
| 6381 | face_at_string_position (w, string, pos, bufpos, region_beg, |
| 6382 | region_end, endptr, base_face_id) |
| 6383 | struct window *w; |
| 6384 | Lisp_Object string; |
| 6385 | int pos, bufpos; |
| 6386 | int region_beg, region_end; |
| 6387 | int *endptr; |
| 6388 | enum face_id base_face_id; |
| 6389 | { |
| 6390 | Lisp_Object prop, position, end, limit; |
| 6391 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
| 6392 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 6393 | struct face *base_face; |
| 6394 | int multibyte_p = STRING_MULTIBYTE (string); |
| 6395 | |
| 6396 | /* Get the value of the face property at the current position within |
| 6397 | STRING. Value is nil if there is no face property. */ |
| 6398 | XSETFASTINT (position, pos); |
| 6399 | prop = Fget_text_property (position, Qface, string); |
| 6400 | |
| 6401 | /* Get the next position at which to check for faces. Value of end |
| 6402 | is nil if face is constant all the way to the end of the string. |
| 6403 | Otherwise it is a string position where to check faces next. |
| 6404 | Limit is the maximum position up to which to check for property |
| 6405 | changes in Fnext_single_property_change. Strings are usually |
| 6406 | short, so set the limit to the end of the string. */ |
| 6407 | XSETFASTINT (limit, XSTRING (string)->size); |
| 6408 | end = Fnext_single_property_change (position, Qface, string, limit); |
| 6409 | if (INTEGERP (end)) |
| 6410 | *endptr = XFASTINT (end); |
| 6411 | else |
| 6412 | *endptr = -1; |
| 6413 | |
| 6414 | base_face = FACE_FROM_ID (f, base_face_id); |
| 6415 | xassert (base_face); |
| 6416 | |
| 6417 | /* Optimize the default case that there is no face property and we |
| 6418 | are not in the region. */ |
| 6419 | if (NILP (prop) |
| 6420 | && (base_face_id != DEFAULT_FACE_ID |
| 6421 | /* BUFPOS <= 0 means STRING is not an overlay string, so |
| 6422 | that the region doesn't have to be taken into account. */ |
| 6423 | || bufpos <= 0 |
| 6424 | || bufpos < region_beg |
| 6425 | || bufpos >= region_end) |
| 6426 | && (multibyte_p |
| 6427 | /* We can't realize faces for different charsets differently |
| 6428 | if we don't have fonts, so we can stop here if not working |
| 6429 | on a window-system frame. */ |
| 6430 | || !FRAME_WINDOW_P (f) |
| 6431 | || FACE_SUITABLE_FOR_CHAR_P (base_face, 0))) |
| 6432 | return base_face->id; |
| 6433 | |
| 6434 | /* Begin with attributes from the base face. */ |
| 6435 | bcopy (base_face->lface, attrs, sizeof attrs); |
| 6436 | |
| 6437 | /* Merge in attributes specified via text properties. */ |
| 6438 | if (!NILP (prop)) |
| 6439 | merge_face_vector_with_property (f, attrs, prop); |
| 6440 | |
| 6441 | /* If in the region, merge in the region face. */ |
| 6442 | if (bufpos |
| 6443 | && bufpos >= region_beg |
| 6444 | && bufpos < region_end) |
| 6445 | { |
| 6446 | Lisp_Object region_face = lface_from_face_name (f, Qregion, 0); |
| 6447 | merge_face_vectors (XVECTOR (region_face)->contents, attrs); |
| 6448 | } |
| 6449 | |
| 6450 | /* Look up a realized face with the given face attributes, |
| 6451 | or realize a new one for ASCII characters. */ |
| 6452 | return lookup_face (f, attrs, 0, NULL); |
| 6453 | } |
| 6454 | |
| 6455 | |
| 6456 | \f |
| 6457 | /*********************************************************************** |
| 6458 | Tests |
| 6459 | ***********************************************************************/ |
| 6460 | |
| 6461 | #if GLYPH_DEBUG |
| 6462 | |
| 6463 | /* Print the contents of the realized face FACE to stderr. */ |
| 6464 | |
| 6465 | static void |
| 6466 | dump_realized_face (face) |
| 6467 | struct face *face; |
| 6468 | { |
| 6469 | fprintf (stderr, "ID: %d\n", face->id); |
| 6470 | #ifdef HAVE_X_WINDOWS |
| 6471 | fprintf (stderr, "gc: %d\n", (int) face->gc); |
| 6472 | #endif |
| 6473 | fprintf (stderr, "foreground: 0x%lx (%s)\n", |
| 6474 | face->foreground, |
| 6475 | XSTRING (face->lface[LFACE_FOREGROUND_INDEX])->data); |
| 6476 | fprintf (stderr, "background: 0x%lx (%s)\n", |
| 6477 | face->background, |
| 6478 | XSTRING (face->lface[LFACE_BACKGROUND_INDEX])->data); |
| 6479 | fprintf (stderr, "font_name: %s (%s)\n", |
| 6480 | face->font_name, |
| 6481 | XSTRING (face->lface[LFACE_FAMILY_INDEX])->data); |
| 6482 | #ifdef HAVE_X_WINDOWS |
| 6483 | fprintf (stderr, "font = %p\n", face->font); |
| 6484 | #endif |
| 6485 | fprintf (stderr, "font_info_id = %d\n", face->font_info_id); |
| 6486 | fprintf (stderr, "fontset: %d\n", face->fontset); |
| 6487 | fprintf (stderr, "underline: %d (%s)\n", |
| 6488 | face->underline_p, |
| 6489 | XSTRING (Fsymbol_name (face->lface[LFACE_UNDERLINE_INDEX]))->data); |
| 6490 | fprintf (stderr, "hash: %d\n", face->hash); |
| 6491 | fprintf (stderr, "charset: %d\n", face->charset); |
| 6492 | } |
| 6493 | |
| 6494 | |
| 6495 | DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, "") |
| 6496 | (n) |
| 6497 | Lisp_Object n; |
| 6498 | { |
| 6499 | if (NILP (n)) |
| 6500 | { |
| 6501 | int i; |
| 6502 | |
| 6503 | fprintf (stderr, "font selection order: "); |
| 6504 | for (i = 0; i < DIM (font_sort_order); ++i) |
| 6505 | fprintf (stderr, "%d ", font_sort_order[i]); |
| 6506 | fprintf (stderr, "\n"); |
| 6507 | |
| 6508 | fprintf (stderr, "alternative fonts: "); |
| 6509 | debug_print (Vface_alternative_font_family_alist); |
| 6510 | fprintf (stderr, "\n"); |
| 6511 | |
| 6512 | for (i = 0; i < FRAME_FACE_CACHE (SELECTED_FRAME ())->used; ++i) |
| 6513 | Fdump_face (make_number (i)); |
| 6514 | } |
| 6515 | else |
| 6516 | { |
| 6517 | struct face *face; |
| 6518 | CHECK_NUMBER (n, 0); |
| 6519 | face = FACE_FROM_ID (SELECTED_FRAME (), XINT (n)); |
| 6520 | if (face == NULL) |
| 6521 | error ("Not a valid face"); |
| 6522 | dump_realized_face (face); |
| 6523 | } |
| 6524 | |
| 6525 | return Qnil; |
| 6526 | } |
| 6527 | |
| 6528 | |
| 6529 | DEFUN ("show-face-resources", Fshow_face_resources, Sshow_face_resources, |
| 6530 | 0, 0, 0, "") |
| 6531 | () |
| 6532 | { |
| 6533 | fprintf (stderr, "number of colors = %d\n", ncolors_allocated); |
| 6534 | fprintf (stderr, "number of pixmaps = %d\n", npixmaps_allocated); |
| 6535 | fprintf (stderr, "number of GCs = %d\n", ngcs); |
| 6536 | return Qnil; |
| 6537 | } |
| 6538 | |
| 6539 | #endif /* GLYPH_DEBUG != 0 */ |
| 6540 | |
| 6541 | |
| 6542 | \f |
| 6543 | /*********************************************************************** |
| 6544 | Initialization |
| 6545 | ***********************************************************************/ |
| 6546 | |
| 6547 | void |
| 6548 | syms_of_xfaces () |
| 6549 | { |
| 6550 | Qface = intern ("face"); |
| 6551 | staticpro (&Qface); |
| 6552 | Qbitmap_spec_p = intern ("bitmap-spec-p"); |
| 6553 | staticpro (&Qbitmap_spec_p); |
| 6554 | Qframe_update_face_colors = intern ("frame-update-face-colors"); |
| 6555 | staticpro (&Qframe_update_face_colors); |
| 6556 | |
| 6557 | /* Lisp face attribute keywords. */ |
| 6558 | QCfamily = intern (":family"); |
| 6559 | staticpro (&QCfamily); |
| 6560 | QCheight = intern (":height"); |
| 6561 | staticpro (&QCheight); |
| 6562 | QCweight = intern (":weight"); |
| 6563 | staticpro (&QCweight); |
| 6564 | QCslant = intern (":slant"); |
| 6565 | staticpro (&QCslant); |
| 6566 | QCunderline = intern (":underline"); |
| 6567 | staticpro (&QCunderline); |
| 6568 | QCinverse_video = intern (":inverse-video"); |
| 6569 | staticpro (&QCinverse_video); |
| 6570 | QCreverse_video = intern (":reverse-video"); |
| 6571 | staticpro (&QCreverse_video); |
| 6572 | QCforeground = intern (":foreground"); |
| 6573 | staticpro (&QCforeground); |
| 6574 | QCbackground = intern (":background"); |
| 6575 | staticpro (&QCbackground); |
| 6576 | QCstipple = intern (":stipple");; |
| 6577 | staticpro (&QCstipple); |
| 6578 | QCwidth = intern (":width"); |
| 6579 | staticpro (&QCwidth); |
| 6580 | QCfont = intern (":font"); |
| 6581 | staticpro (&QCfont); |
| 6582 | QCbold = intern (":bold"); |
| 6583 | staticpro (&QCbold); |
| 6584 | QCitalic = intern (":italic"); |
| 6585 | staticpro (&QCitalic); |
| 6586 | QCoverline = intern (":overline"); |
| 6587 | staticpro (&QCoverline); |
| 6588 | QCstrike_through = intern (":strike-through"); |
| 6589 | staticpro (&QCstrike_through); |
| 6590 | QCbox = intern (":box"); |
| 6591 | staticpro (&QCbox); |
| 6592 | |
| 6593 | /* Symbols used for Lisp face attribute values. */ |
| 6594 | QCcolor = intern (":color"); |
| 6595 | staticpro (&QCcolor); |
| 6596 | QCline_width = intern (":line-width"); |
| 6597 | staticpro (&QCline_width); |
| 6598 | QCstyle = intern (":style"); |
| 6599 | staticpro (&QCstyle); |
| 6600 | Qreleased_button = intern ("released-button"); |
| 6601 | staticpro (&Qreleased_button); |
| 6602 | Qpressed_button = intern ("pressed-button"); |
| 6603 | staticpro (&Qpressed_button); |
| 6604 | Qnormal = intern ("normal"); |
| 6605 | staticpro (&Qnormal); |
| 6606 | Qultra_light = intern ("ultra-light"); |
| 6607 | staticpro (&Qultra_light); |
| 6608 | Qextra_light = intern ("extra-light"); |
| 6609 | staticpro (&Qextra_light); |
| 6610 | Qlight = intern ("light"); |
| 6611 | staticpro (&Qlight); |
| 6612 | Qsemi_light = intern ("semi-light"); |
| 6613 | staticpro (&Qsemi_light); |
| 6614 | Qsemi_bold = intern ("semi-bold"); |
| 6615 | staticpro (&Qsemi_bold); |
| 6616 | Qbold = intern ("bold"); |
| 6617 | staticpro (&Qbold); |
| 6618 | Qextra_bold = intern ("extra-bold"); |
| 6619 | staticpro (&Qextra_bold); |
| 6620 | Qultra_bold = intern ("ultra-bold"); |
| 6621 | staticpro (&Qultra_bold); |
| 6622 | Qoblique = intern ("oblique"); |
| 6623 | staticpro (&Qoblique); |
| 6624 | Qitalic = intern ("italic"); |
| 6625 | staticpro (&Qitalic); |
| 6626 | Qreverse_oblique = intern ("reverse-oblique"); |
| 6627 | staticpro (&Qreverse_oblique); |
| 6628 | Qreverse_italic = intern ("reverse-italic"); |
| 6629 | staticpro (&Qreverse_italic); |
| 6630 | Qultra_condensed = intern ("ultra-condensed"); |
| 6631 | staticpro (&Qultra_condensed); |
| 6632 | Qextra_condensed = intern ("extra-condensed"); |
| 6633 | staticpro (&Qextra_condensed); |
| 6634 | Qcondensed = intern ("condensed"); |
| 6635 | staticpro (&Qcondensed); |
| 6636 | Qsemi_condensed = intern ("semi-condensed"); |
| 6637 | staticpro (&Qsemi_condensed); |
| 6638 | Qsemi_expanded = intern ("semi-expanded"); |
| 6639 | staticpro (&Qsemi_expanded); |
| 6640 | Qexpanded = intern ("expanded"); |
| 6641 | staticpro (&Qexpanded); |
| 6642 | Qextra_expanded = intern ("extra-expanded"); |
| 6643 | staticpro (&Qextra_expanded); |
| 6644 | Qultra_expanded = intern ("ultra-expanded"); |
| 6645 | staticpro (&Qultra_expanded); |
| 6646 | Qbackground_color = intern ("background-color"); |
| 6647 | staticpro (&Qbackground_color); |
| 6648 | Qforeground_color = intern ("foreground-color"); |
| 6649 | staticpro (&Qforeground_color); |
| 6650 | Qunspecified = intern ("unspecified"); |
| 6651 | staticpro (&Qunspecified); |
| 6652 | |
| 6653 | Qface_alias = intern ("face-alias"); |
| 6654 | staticpro (&Qface_alias); |
| 6655 | Qdefault = intern ("default"); |
| 6656 | staticpro (&Qdefault); |
| 6657 | Qtool_bar = intern ("tool-bar"); |
| 6658 | staticpro (&Qtool_bar); |
| 6659 | Qregion = intern ("region"); |
| 6660 | staticpro (&Qregion); |
| 6661 | Qfringe = intern ("fringe"); |
| 6662 | staticpro (&Qfringe); |
| 6663 | Qheader_line = intern ("header-line"); |
| 6664 | staticpro (&Qheader_line); |
| 6665 | Qscroll_bar = intern ("scroll-bar"); |
| 6666 | staticpro (&Qscroll_bar); |
| 6667 | Qmenu = intern ("menu"); |
| 6668 | staticpro (&Qmenu); |
| 6669 | Qcursor = intern ("cursor"); |
| 6670 | staticpro (&Qcursor); |
| 6671 | Qborder = intern ("border"); |
| 6672 | staticpro (&Qborder); |
| 6673 | Qmouse = intern ("mouse"); |
| 6674 | staticpro (&Qmouse); |
| 6675 | Qtty_color_desc = intern ("tty-color-desc"); |
| 6676 | staticpro (&Qtty_color_desc); |
| 6677 | Qtty_color_by_index = intern ("tty-color-by-index"); |
| 6678 | staticpro (&Qtty_color_by_index); |
| 6679 | |
| 6680 | defsubr (&Sinternal_make_lisp_face); |
| 6681 | defsubr (&Sinternal_lisp_face_p); |
| 6682 | defsubr (&Sinternal_set_lisp_face_attribute); |
| 6683 | #ifdef HAVE_WINDOW_SYSTEM |
| 6684 | defsubr (&Sinternal_set_lisp_face_attribute_from_resource); |
| 6685 | #endif |
| 6686 | defsubr (&Scolor_gray_p); |
| 6687 | defsubr (&Scolor_supported_p); |
| 6688 | defsubr (&Sinternal_get_lisp_face_attribute); |
| 6689 | defsubr (&Sinternal_lisp_face_attribute_values); |
| 6690 | defsubr (&Sinternal_lisp_face_equal_p); |
| 6691 | defsubr (&Sinternal_lisp_face_empty_p); |
| 6692 | defsubr (&Sinternal_copy_lisp_face); |
| 6693 | defsubr (&Sinternal_merge_in_global_face); |
| 6694 | defsubr (&Sface_font); |
| 6695 | defsubr (&Sframe_face_alist); |
| 6696 | defsubr (&Sinternal_set_font_selection_order); |
| 6697 | defsubr (&Sinternal_set_alternative_font_family_alist); |
| 6698 | #if GLYPH_DEBUG |
| 6699 | defsubr (&Sdump_face); |
| 6700 | defsubr (&Sshow_face_resources); |
| 6701 | #endif /* GLYPH_DEBUG */ |
| 6702 | defsubr (&Sclear_face_cache); |
| 6703 | defsubr (&Stty_suppress_bold_inverse_default_colors); |
| 6704 | |
| 6705 | DEFVAR_LISP ("font-list-limit", &Vfont_list_limit, |
| 6706 | "*Limit for font matching.\n\ |
| 6707 | If an integer > 0, font matching functions won't load more than\n\ |
| 6708 | that number of fonts when searching for a matching font."); |
| 6709 | Vfont_list_limit = make_number (DEFAULT_FONT_LIST_LIMIT); |
| 6710 | |
| 6711 | DEFVAR_LISP ("face-new-frame-defaults", &Vface_new_frame_defaults, |
| 6712 | "List of global face definitions (for internal use only.)"); |
| 6713 | Vface_new_frame_defaults = Qnil; |
| 6714 | |
| 6715 | DEFVAR_LISP ("face-default-stipple", &Vface_default_stipple, |
| 6716 | "*Default stipple pattern used on monochrome displays.\n\ |
| 6717 | This stipple pattern is used on monochrome displays\n\ |
| 6718 | instead of shades of gray for a face background color.\n\ |
| 6719 | See `set-face-stipple' for possible values for this variable."); |
| 6720 | Vface_default_stipple = build_string ("gray3"); |
| 6721 | |
| 6722 | DEFVAR_LISP ("face-alternative-font-family-alist", |
| 6723 | &Vface_alternative_font_family_alist, ""); |
| 6724 | Vface_alternative_font_family_alist = Qnil; |
| 6725 | |
| 6726 | #if SCALABLE_FONTS |
| 6727 | |
| 6728 | DEFVAR_LISP ("scalable-fonts-allowed", &Vscalable_fonts_allowed, |
| 6729 | "Allowed scalable fonts.\n\ |
| 6730 | A value of nil means don't allow any scalable fonts.\n\ |
| 6731 | A value of t means allow any scalable font.\n\ |
| 6732 | Otherwise, value must be a list of regular expressions. A font may be\n\ |
| 6733 | scaled if its name matches a regular expression in the list."); |
| 6734 | #ifdef WINDOWSNT |
| 6735 | /* Windows uses mainly truetype fonts, so disallowing scalable fonts |
| 6736 | by default limits the fonts available severely. */ |
| 6737 | Vscalable_fonts_allowed = Qt; |
| 6738 | #else |
| 6739 | Vscalable_fonts_allowed = Qnil; |
| 6740 | #endif |
| 6741 | #endif /* SCALABLE_FONTS */ |
| 6742 | |
| 6743 | #ifdef HAVE_WINDOW_SYSTEM |
| 6744 | defsubr (&Sbitmap_spec_p); |
| 6745 | defsubr (&Sx_list_fonts); |
| 6746 | defsubr (&Sinternal_face_x_get_resource); |
| 6747 | defsubr (&Sx_family_fonts); |
| 6748 | defsubr (&Sx_font_family_list); |
| 6749 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 6750 | } |