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c2f5bfd6 | 1 | /* font.h -- Interface definition for font handling. |
ab422c4d | 2 | Copyright (C) 2006-2013 Free Software Foundation, Inc. |
5df4f04c | 3 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 |
c2f5bfd6 KH |
4 | National Institute of Advanced Industrial Science and Technology (AIST) |
5 | Registration Number H13PRO009 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
b9b1cc14 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
c2f5bfd6 | 10 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
c2f5bfd6 KH |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
c2f5bfd6 KH |
21 | |
22 | #ifndef EMACS_FONT_H | |
23 | #define EMACS_FONT_H | |
24 | ||
25 | #include "ccl.h" | |
36a305a7 | 26 | #include "frame.h" |
c2f5bfd6 KH |
27 | |
28 | /* We have three types of Lisp objects related to font. | |
29 | ||
30 | FONT-SPEC | |
31 | ||
875003e5 | 32 | Pseudo vector (length FONT_SPEC_MAX) of font properties. Some |
c2f5bfd6 KH |
33 | properties can be left unspecified (i.e. nil). Emacs asks |
34 | font-drivers to find a font by FONT-SPEC. A fontset entry | |
35 | specifies requisite properties whereas a face specifies just | |
875003e5 | 36 | preferable properties. |
c2f5bfd6 KH |
37 | |
38 | FONT-ENTITY | |
39 | ||
56dd2d86 | 40 | Pseudo vector (length FONT_ENTITY_MAX) of fully instantiated |
875003e5 | 41 | font properties that a font-driver returns upon a request of |
c2f5bfd6 KH |
42 | FONT-SPEC. |
43 | ||
875003e5 | 44 | Note: Only the method `list' and `match' of a font-driver can |
56dd2d86 | 45 | create this object, and it should never be modified by Lisp. |
c2f5bfd6 KH |
46 | |
47 | FONT-OBJECT | |
48 | ||
56dd2d86 | 49 | Pseudo vector (length FONT_OBJECT_MAX) of an opened font. |
c2f5bfd6 | 50 | |
875003e5 KH |
51 | Lisp object encapsulating "struct font". This corresponds to |
52 | an opened font. | |
53 | ||
54 | Note: Only the method `open' of a font-driver can create this | |
56dd2d86 | 55 | object, and it should never be modified by Lisp. */ |
875003e5 KH |
56 | |
57 | extern Lisp_Object Qfont_spec, Qfont_entity, Qfont_object; | |
c2f5bfd6 | 58 | |
c2f5bfd6 KH |
59 | /* An enumerator for each font property. This is used as an index to |
60 | the vector of FONT-SPEC and FONT-ENTITY. | |
61 | ||
62 | Note: The order is important and should not be changed. */ | |
63 | ||
64 | enum font_property_index | |
65 | { | |
66 | /* FONT-TYPE is a symbol indicating a font backend; currently `x', | |
56dd2d86 | 67 | `xft', and `ftx' are available on X, `uniscribe' and `gdi' on |
4a3f9f7f | 68 | Windows, and `ns' under Cocoa / GNUstep. */ |
c2f5bfd6 KH |
69 | FONT_TYPE_INDEX, |
70 | ||
71 | /* FONT-FOUNDRY is a foundry name (symbol). */ | |
72 | FONT_FOUNDRY_INDEX, | |
73 | ||
74 | /* FONT-FAMILY is a family name (symbol). */ | |
75 | FONT_FAMILY_INDEX, | |
76 | ||
77 | /* FONT-ADSTYLE is an additional style name (symbol). */ | |
78 | FONT_ADSTYLE_INDEX, | |
79 | ||
80 | /* FONT-REGISTRY is a combination of a charset-registry and | |
875003e5 | 81 | charset-encoding name (symbol). */ |
c2f5bfd6 KH |
82 | FONT_REGISTRY_INDEX, |
83 | ||
84 | /* FONT-WEIGHT is a numeric value of weight (e.g. medium, bold) of | |
56dd2d86 | 85 | the font. The lowest 8 bits is an index determining the |
875003e5 KH |
86 | symbolic name, and the higher bits is the actual numeric value |
87 | defined in `font-weight-table'. */ | |
c2f5bfd6 KH |
88 | FONT_WEIGHT_INDEX, |
89 | ||
90 | /* FONT-SLANT is a numeric value of slant (e.g. r, i, o) of the | |
56dd2d86 | 91 | font. The lowest 8 bits is an index determining the symbolic |
875003e5 KH |
92 | name, and the higher bits is the actual numeric value defined |
93 | in `font-slant-table'. */ | |
c2f5bfd6 KH |
94 | FONT_SLANT_INDEX, |
95 | ||
875003e5 | 96 | /* FONT-WIDTH is a numeric value of setwidth (e.g. normal) of the |
56dd2d86 | 97 | font. The lowest 8 bits is an index determining the symbolic |
875003e5 KH |
98 | name, and the higher bits is the actual numeric value defined |
99 | `font-width-table'. */ | |
c2f5bfd6 KH |
100 | FONT_WIDTH_INDEX, |
101 | ||
102 | /* FONT-SIZE is a size of the font. If integer, it is a pixel | |
56dd2d86 EZ |
103 | size. For a font-spec, the value can be a float specifying |
104 | the point size. The value zero means that the font is | |
875003e5 | 105 | scalable. */ |
c2f5bfd6 KH |
106 | FONT_SIZE_INDEX, |
107 | ||
875003e5 KH |
108 | /* FONT-DPI is a resolution (dot per inch) for which the font is |
109 | designed. */ | |
110 | FONT_DPI_INDEX, | |
111 | ||
112 | /* FONT-SPACING is a spacing (mono, proportional, charcell) of the | |
113 | font (integer; one of enum font_spacing). */ | |
114 | FONT_SPACING_INDEX, | |
115 | ||
116 | /* FONT-AVGWIDTH is an average width (1/10 pixel unit) of the | |
117 | font. */ | |
118 | FONT_AVGWIDTH_INDEX, | |
119 | ||
120 | #if 0 | |
121 | /* The following two members are to substitute for the above 6 | |
122 | members (FONT_WEIGHT_INDEX to FONT_AVGWIDTH_INDEX excluding | |
123 | FONT_SIZE_INDEX) if it is found that font-entities consumes too | |
124 | much memory. */ | |
125 | ||
126 | /* FONT-STYLE is a 24-bit integer containing indices for | |
127 | style-related properties WEIGHT, SLANT, and WIDTH. The lowest | |
56dd2d86 EZ |
128 | 8 bits is an index to the weight table AREF (font_style_table, |
129 | 0), the next 8 bits is an index to the slant table AREF | |
130 | (font_style_table, 1), the highest 8 bits is an index to the | |
131 | slant table AREF (font_style_table, 2). The index 0 indicates | |
875003e5 KH |
132 | that the corresponding style is not specified. This way, we |
133 | can represent at most 255 different names for each style, which | |
134 | is surely sufficient. */ | |
135 | FONT_STYLE_INDEX, | |
136 | ||
137 | /* FONT-METRICS is a 27-bit integer containing metrics-related | |
56dd2d86 EZ |
138 | properties DPI, AVGWIDTH, SPACING. The lowest 12 bits is for |
139 | DPI, the next 12 bits is for AVGWIDTH, the highest 3 bits is for | |
875003e5 KH |
140 | SPACING. In each bit field, the highest bit indicates that the |
141 | corresponding value is set or not. This way, we can represent | |
142 | DPI by 11-bit (0 to 2047), AVGWIDTH by 11-bit (0 to 2047), | |
143 | SPACING by 3-bit (0 for proportional, 1 for dual, 2 for mono, 3 | |
144 | for charcell), which is surely sufficient. */ | |
145 | FONT_METRICS_INDEX, | |
146 | #endif | |
147 | ||
c2f5bfd6 KH |
148 | /* In a font-spec, the value is an alist of extra information of a |
149 | font such as name, OpenType features, and language coverage. | |
875003e5 | 150 | In addition, in a font-entity, the value may contain a pair |
ebb26565 | 151 | (font-entity . INFO) where INFO is extra information to identify |
f6b4d85c | 152 | a font (font-driver dependent). */ |
c2f5bfd6 KH |
153 | FONT_EXTRA_INDEX, /* alist alist */ |
154 | ||
155 | /* This value is the length of font-spec vector. */ | |
156 | FONT_SPEC_MAX, | |
157 | ||
a7840ffb | 158 | /* The followings are used only for a font-entity and a font-object. */ |
c2f5bfd6 | 159 | |
875003e5 KH |
160 | /* List of font-objects opened from the font-entity. */ |
161 | FONT_OBJLIST_INDEX = FONT_SPEC_MAX, | |
c2f5bfd6 | 162 | |
a7840ffb KH |
163 | /* Font-entity from which the font-object is opened. */ |
164 | FONT_ENTITY_INDEX = FONT_SPEC_MAX, | |
165 | ||
c2f5bfd6 | 166 | /* This value is the length of font-entity vector. */ |
875003e5 KH |
167 | FONT_ENTITY_MAX, |
168 | ||
a7840ffb KH |
169 | /* The followings are used only for a font-object. */ |
170 | ||
875003e5 KH |
171 | /* XLFD name of the font (string). */ |
172 | FONT_NAME_INDEX = FONT_ENTITY_MAX, | |
4a3f9f7f | 173 | |
875003e5 | 174 | /* Full name of the font (string). It is the name extracted from |
56dd2d86 | 175 | the opened font, and may be different from the above. It may be |
875003e5 KH |
176 | nil if the opened font doesn't give a name. */ |
177 | FONT_FULLNAME_INDEX, | |
178 | ||
179 | /* File name of the font or nil if a file associated with the font | |
180 | is not available. */ | |
181 | FONT_FILE_INDEX, | |
182 | ||
25b81df4 | 183 | /* Format of the font (symbol) or nil if unknown. */ |
875003e5 KH |
184 | FONT_FORMAT_INDEX, |
185 | ||
186 | /* This value is the length of font-object vector. */ | |
187 | FONT_OBJECT_MAX | |
c2f5bfd6 KH |
188 | }; |
189 | ||
875003e5 KH |
190 | /* Return the numeric weight value of FONT. */ |
191 | #define FONT_WEIGHT_NUMERIC(font) \ | |
192 | (INTEGERP (AREF ((font), FONT_WEIGHT_INDEX)) \ | |
193 | ? (XINT (AREF ((font), FONT_WEIGHT_INDEX)) >> 8) : -1) | |
194 | /* Return the numeric slant value of FONT. */ | |
195 | #define FONT_SLANT_NUMERIC(font) \ | |
196 | (INTEGERP (AREF ((font), FONT_SLANT_INDEX)) \ | |
197 | ? (XINT (AREF ((font), FONT_SLANT_INDEX)) >> 8) : -1) | |
198 | /* Return the numeric width value of FONT. */ | |
199 | #define FONT_WIDTH_NUMERIC(font) \ | |
200 | (INTEGERP (AREF ((font), FONT_WIDTH_INDEX)) \ | |
201 | ? (XINT (AREF ((font), FONT_WIDTH_INDEX)) >> 8) : -1) | |
202 | /* Return the symbolic weight value of FONT. */ | |
203 | #define FONT_WEIGHT_SYMBOLIC(font) \ | |
204 | font_style_symbolic (font, FONT_WEIGHT_INDEX, 0) | |
205 | /* Return the symbolic slant value of FONT. */ | |
206 | #define FONT_SLANT_SYMBOLIC(font) \ | |
207 | font_style_symbolic (font, FONT_SLANT_INDEX, 0) | |
208 | /* Return the symbolic width value of FONT. */ | |
209 | #define FONT_WIDTH_SYMBOLIC(font) \ | |
210 | font_style_symbolic (font, FONT_WIDTH_INDEX, 0) | |
211 | /* Return the face-weight corresponding to the weight of FONT. */ | |
212 | #define FONT_WEIGHT_FOR_FACE(font) \ | |
213 | font_style_symbolic (font, FONT_WEIGHT_INDEX, 1) | |
214 | /* Return the face-slant corresponding to the slant of FONT. */ | |
215 | #define FONT_SLANT_FOR_FACE(font) \ | |
216 | font_style_symbolic (font, FONT_SLANT_INDEX, 1) | |
217 | /* Return the face-swidth corresponding to the slant of FONT. */ | |
218 | #define FONT_WIDTH_FOR_FACE(font) \ | |
219 | font_style_symbolic (font, FONT_WIDTH_INDEX, 1) | |
220 | ||
221 | /* Return the numeric weight value corresponding ot the symbol NAME. */ | |
222 | #define FONT_WEIGHT_NAME_NUMERIC(name) \ | |
223 | (font_style_to_value (FONT_WEIGHT_INDEX, (name), 0) >> 8) | |
224 | /* Return the numeric slant value corresponding ot the symbol NAME. */ | |
225 | #define FONT_SLANT_NAME_NUMERIC(name) \ | |
226 | (font_style_to_value (FONT_SLANT_INDEX, (name), 0) >> 8) | |
227 | /* Return the numeric width value corresponding ot the symbol NAME. */ | |
228 | #define FONT_WIDTH_NAME_NUMERIC(name) \ | |
229 | (font_style_to_value (FONT_WIDTH_INDEX, (name), 0) >> 8) | |
230 | ||
231 | /* Set the font property PROP of FONT to VAL. PROP is one of | |
232 | style-related font property index (FONT_WEIGHT/SLANT/WIDTH_INDEX). | |
233 | VAL (integer or symbol) is the numeric or symbolic style value. */ | |
234 | #define FONT_SET_STYLE(font, prop, val) \ | |
235 | ASET ((font), prop, make_number (font_style_to_value (prop, val, 1))) | |
236 | ||
237 | extern Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript; | |
955cbe7b | 238 | extern Lisp_Object QCavgwidth, QCantialias, QCfont_entity; |
99f3388e DN |
239 | extern Lisp_Object Qp; |
240 | ||
c2f5bfd6 | 241 | |
3223c449 | 242 | /* Important character set symbols. */ |
366664ad | 243 | extern Lisp_Object Qascii_0; |
32d497b1 | 244 | extern Lisp_Object Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip; |
3223c449 | 245 | |
cf702558 CY |
246 | /* Special ADSTYLE properties to avoid fonts used for Latin characters. */ |
247 | extern Lisp_Object Qja, Qko; | |
248 | ||
875003e5 KH |
249 | /* Structure for a font-spec. */ |
250 | ||
251 | struct font_spec | |
252 | { | |
b102ceb1 | 253 | struct vectorlike_header header; |
875003e5 KH |
254 | Lisp_Object props[FONT_SPEC_MAX]; |
255 | }; | |
256 | ||
257 | /* Structure for a font-entity. */ | |
258 | ||
259 | struct font_entity | |
260 | { | |
b102ceb1 | 261 | struct vectorlike_header header; |
875003e5 KH |
262 | Lisp_Object props[FONT_ENTITY_MAX]; |
263 | }; | |
c2f5bfd6 | 264 | |
875003e5 KH |
265 | /* A value which may appear in the member `encoding' of struct font |
266 | indicating that a font itself doesn't tell which encoding to be | |
267 | used. */ | |
268 | #define FONT_ENCODING_NOT_DECIDED 255 | |
269 | ||
270 | /* Structure for a font-object. */ | |
c2f5bfd6 KH |
271 | |
272 | struct font | |
273 | { | |
b102ceb1 | 274 | struct vectorlike_header header; |
875003e5 KH |
275 | |
276 | /* All Lisp_Object components must come first. | |
277 | That ensures they are all aligned normally. */ | |
c2f5bfd6 | 278 | |
875003e5 KH |
279 | Lisp_Object props[FONT_OBJECT_MAX]; |
280 | ||
281 | /* Beyond here, there should be no more Lisp_Object components. */ | |
282 | ||
032a42c8 CY |
283 | /* Minimum and maximum glyph widths, in pixels. Some font backends, |
284 | such as xft, lack the information to easily compute minimum and | |
285 | maximum widths over all characters; in that case, these values | |
286 | are approximate. */ | |
287 | int min_width; | |
875003e5 | 288 | int max_width; |
c2f5bfd6 KH |
289 | |
290 | /* By which pixel size the font is opened. */ | |
291 | int pixel_size; | |
292 | ||
875003e5 KH |
293 | /* Height of the font. On X window, this is the same as |
294 | (font->ascent + font->descent). */ | |
295 | int height; | |
296 | ||
297 | /* Width of the space glyph of the font. If the font doesn't have a | |
298 | SPACE glyph, the value is 0. */ | |
299 | int space_width; | |
300 | ||
301 | /* Average width of glyphs in the font. If the font itself doesn't | |
56dd2d86 | 302 | have that information but has glyphs of ASCII characters, the |
032a42c8 | 303 | value is the average width of those glyphs. Otherwise, the value |
875003e5 KH |
304 | is 0. */ |
305 | int average_width; | |
306 | ||
875003e5 KH |
307 | /* Ascent and descent of the font (in pixels). */ |
308 | int ascent, descent; | |
c6666169 | 309 | |
875003e5 KH |
310 | /* Vertical pixel width of the underline. If is zero if that |
311 | information is not in the font. */ | |
312 | int underline_thickness; | |
313 | ||
314 | /* Vertical pixel position (relative to the baseline) of the | |
315 | underline. If it is positive, it is below the baseline. It is | |
316 | negative if that information is not in the font. */ | |
317 | int underline_position; | |
318 | ||
a864ef14 | 319 | /* True if `vertical-centering-font-regexp' matches this font name. |
56dd2d86 | 320 | In this case, we render characters at vertical center positions |
875003e5 | 321 | of lines. */ |
a864ef14 | 322 | bool vertical_centering; |
875003e5 KH |
323 | |
324 | /* The baseline position of a font is normally `ascent' value of the | |
56dd2d86 | 325 | font. However, there exist many fonts which don't set `ascent' to |
875003e5 KH |
326 | an appropriate value to be used as baseline position. This is |
327 | typical in such ASCII fonts which are designed to be used with | |
328 | Chinese, Japanese, Korean characters. When we use mixture of | |
329 | such fonts and normal fonts (having correct `ascent' value), a | |
330 | display line gets very ugly. Since we have no way to fix it | |
56dd2d86 | 331 | automatically, it is user's responsibility to supply well designed |
875003e5 KH |
332 | fonts or correct `ascent' value of fonts. But, the latter |
333 | requires heavy work (modifying all bitmap data in BDF files). | |
334 | So, Emacs accepts a private font property | |
335 | `_MULE_BASELINE_OFFSET'. If a font has this property, we | |
336 | calculate the baseline position by subtracting the value from | |
56dd2d86 EZ |
337 | `ascent'. In other words, the value indicates how many pixels |
338 | higher than normal ASCII text we should draw a character of the | |
339 | font for better appearance. | |
875003e5 KH |
340 | |
341 | We also have to consider the fact that the concept of `baseline' | |
342 | differs among scripts to which each character belongs. For | |
56dd2d86 | 343 | instance, baseline should be at the bottom-most position of all |
875003e5 | 344 | glyphs for Chinese, Japanese, and Korean. But, many of existing |
56dd2d86 | 345 | fonts for those characters don't have correct `ascent' values |
875003e5 KH |
346 | because they are designed to be used with ASCII fonts. To |
347 | display characters of different language on the same line, the | |
348 | best way will be to arrange them in the middle of the line. So, | |
349 | in such a case, again, we utilize the font property | |
350 | `_MULE_BASELINE_OFFSET'. If the value is larger than `ascent' we | |
351 | calculate baseline so that a character is arranged in the middle | |
352 | of a line. */ | |
353 | int baseline_offset; | |
354 | ||
56dd2d86 | 355 | /* Non-zero means a character should be composed at a position |
875003e5 KH |
356 | relative to the height (or depth) of previous glyphs in the |
357 | following cases: | |
358 | (1) The bottom of the character is higher than this value. In | |
359 | this case, the character is drawn above the previous glyphs. | |
360 | (2) The top of the character is lower than 0 (i.e. baseline | |
56dd2d86 | 361 | height). In this case, the character is drawn below the |
875003e5 KH |
362 | previous glyphs. |
363 | ||
364 | This value is taken from a private font property | |
365 | `_MULE_RELATIVE_COMPOSE' which is introduced by Emacs. */ | |
366 | int relative_compose; | |
367 | ||
56dd2d86 | 368 | /* Non-zero means an ascent value to be used for a character |
875003e5 KH |
369 | registered in char-table `use-default-ascent'. */ |
370 | int default_ascent; | |
371 | ||
372 | /* CCL program to calculate code points of the font. */ | |
373 | struct ccl_program *font_encoder; | |
374 | ||
375 | /* Font-driver for the font. */ | |
376 | struct font_driver *driver; | |
c2f5bfd6 | 377 | |
64c9fe54 KH |
378 | /* Charset to encode a character code into a glyph code of the font. |
379 | -1 means that the font doesn't require this information to encode | |
380 | a character. */ | |
c2f5bfd6 KH |
381 | int encoding_charset; |
382 | ||
383 | /* Charset to check if a character code is supported by the font. | |
384 | -1 means that the contents of the font must be looked up to | |
64c9fe54 | 385 | determine it. */ |
e2a3f5b2 | 386 | int repertory_charset; |
c2f5bfd6 | 387 | |
56dd2d86 EZ |
388 | /* There are more members in this structure, but they are private |
389 | to the font-driver. */ | |
c2f5bfd6 KH |
390 | }; |
391 | ||
f8657b39 KH |
392 | enum font_spacing |
393 | { | |
394 | FONT_SPACING_PROPORTIONAL = 0, | |
395 | FONT_SPACING_DUAL = 90, | |
396 | FONT_SPACING_MONO = 100, | |
397 | FONT_SPACING_CHARCELL = 110 | |
398 | }; | |
399 | ||
c2f5bfd6 KH |
400 | struct font_metrics |
401 | { | |
402 | short lbearing, rbearing, width, ascent, descent; | |
403 | }; | |
404 | ||
405 | struct font_bitmap | |
406 | { | |
5a74d0e5 | 407 | int bits_per_pixel; |
c2f5bfd6 KH |
408 | int rows; |
409 | int width; | |
410 | int pitch; | |
411 | unsigned char *buffer; | |
412 | int left; | |
413 | int top; | |
414 | int advance; | |
415 | void *extra; | |
416 | }; | |
417 | ||
418 | /* Predicates to check various font-related objects. */ | |
419 | ||
875003e5 KH |
420 | /* 1 iff X is one of font-spec, font-entity, and font-object. */ |
421 | #define FONTP(x) PSEUDOVECTORP (x, PVEC_FONT) | |
422 | /* 1 iff X is font-spec. */ | |
c2f5bfd6 | 423 | #define FONT_SPEC_P(x) \ |
875003e5 KH |
424 | (FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_SPEC_MAX) |
425 | /* 1 iff X is font-entity. */ | |
c2f5bfd6 | 426 | #define FONT_ENTITY_P(x) \ |
875003e5 KH |
427 | (FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_ENTITY_MAX) |
428 | /* 1 iff X is font-object. */ | |
c2f5bfd6 | 429 | #define FONT_OBJECT_P(x) \ |
875003e5 | 430 | (FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_OBJECT_MAX) |
c2f5bfd6 | 431 | |
875003e5 | 432 | /* 1 iff ENTITY can't be loaded. */ |
4b4836de KH |
433 | #define FONT_ENTITY_NOT_LOADABLE(entity) \ |
434 | EQ (AREF (entity, FONT_OBJLIST_INDEX), Qt) | |
435 | ||
875003e5 | 436 | /* Flag ENTITY not loadable. */ |
4b4836de KH |
437 | #define FONT_ENTITY_SET_NOT_LOADABLE(entity) \ |
438 | ASET (entity, FONT_OBJLIST_INDEX, Qt) | |
439 | ||
c2f5bfd6 KH |
440 | |
441 | /* Check macros for various font-related objects. */ | |
442 | ||
443 | #define CHECK_FONT(x) \ | |
02dfeba8 | 444 | do { if (! FONTP (x)) wrong_type_argument (Qfont, x); } while (0) |
c2f5bfd6 | 445 | #define CHECK_FONT_SPEC(x) \ |
875003e5 | 446 | do { if (! FONT_SPEC_P (x)) wrong_type_argument (Qfont_spec, x); } while (0) |
c2f5bfd6 | 447 | #define CHECK_FONT_ENTITY(x) \ |
875003e5 | 448 | do { if (! FONT_ENTITY_P (x)) wrong_type_argument (Qfont_entity, x); } while (0) |
c2f5bfd6 | 449 | #define CHECK_FONT_OBJECT(x) \ |
875003e5 | 450 | do { if (! FONT_OBJECT_P (x)) wrong_type_argument (Qfont_object, x); } while (0) |
c2f5bfd6 | 451 | |
875003e5 KH |
452 | #define CHECK_FONT_GET_OBJECT(x, font) \ |
453 | do { \ | |
454 | CHECK_FONT_OBJECT (x); \ | |
455 | font = XFONT_OBJECT (x); \ | |
c2f5bfd6 KH |
456 | } while (0) |
457 | ||
875003e5 | 458 | #define XFONT_SPEC(p) \ |
b263a6b0 | 459 | (eassert (FONT_SPEC_P (p)), (struct font_spec *) XUNTAG (p, Lisp_Vectorlike)) |
875003e5 | 460 | #define XFONT_ENTITY(p) \ |
b263a6b0 PE |
461 | (eassert (FONT_ENTITY_P (p)), \ |
462 | (struct font_entity *) XUNTAG (p, Lisp_Vectorlike)) | |
875003e5 | 463 | #define XFONT_OBJECT(p) \ |
b263a6b0 | 464 | (eassert (FONT_OBJECT_P (p)), (struct font *) XUNTAG (p, Lisp_Vectorlike)) |
875003e5 KH |
465 | #define XSETFONT(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_FONT)) |
466 | ||
467 | /* Number of pt per inch (from the TeXbook). */ | |
468 | #define PT_PER_INCH 72.27 | |
469 | ||
470 | /* Return a pixel size (integer) corresponding to POINT size (double) | |
471 | on resolution DPI. */ | |
472 | #define POINT_TO_PIXEL(POINT, DPI) ((POINT) * (DPI) / PT_PER_INCH + 0.5) | |
473 | ||
c4e8ee5e | 474 | /* Return a point size corresponding to POINT size (integer) |
56dd2d86 EZ |
475 | on resolution DPI. Note that though point size is a double, we expect |
476 | it to be rounded to an int, so we add 0.5 here. If the desired value | |
c4e8ee5e JR |
477 | is tenths of points (as in xfld specs), then the pixel size should |
478 | be multiplied BEFORE the conversion to avoid magnifying the error. */ | |
875003e5 KH |
479 | #define PIXEL_TO_POINT(PIXEL, DPI) ((PIXEL) * PT_PER_INCH / (DPI) + 0.5) |
480 | ||
f8657b39 KH |
481 | /* Ignore the difference of font pixel sizes less than or equal to |
482 | this value. */ | |
483 | #define FONT_PIXEL_SIZE_QUANTUM 1 | |
484 | ||
c2f5bfd6 KH |
485 | #define FONT_INVALID_CODE 0xFFFFFFFF |
486 | ||
217caa37 KH |
487 | /* Font driver. Members specified as "optional" can be NULL. */ |
488 | ||
c2f5bfd6 KH |
489 | struct font_driver |
490 | { | |
491 | /* Symbol indicating the type of the font-driver. */ | |
492 | Lisp_Object type; | |
493 | ||
a864ef14 | 494 | /* True iff the font's foundry, family, and adstyle names are case |
9858f6c3 | 495 | sensitive. */ |
a864ef14 | 496 | bool case_sensitive; |
875003e5 | 497 | |
69ea039a | 498 | /* Return a cache of font-entities on frame F. The cache must be a |
c2f5bfd6 | 499 | cons whose cdr part is the actual cache area. */ |
a10c8269 | 500 | Lisp_Object (*get_cache) (struct frame *f); |
c2f5bfd6 | 501 | |
dc377380 | 502 | /* List fonts exactly matching with FONT_SPEC on FRAME. The value |
e38b9ee9 | 503 | is a list of font-entities. The font properties to be considered |
81903466 | 504 | are: :foundry, :family, :adstyle, :registry, :script, :lang, and |
e38b9ee9 KH |
505 | :otf. See the function `font-spec' for their meanings. Note |
506 | that the last three properties are stored in FONT_EXTRA_INDEX | |
507 | slot of FONT_SPEC. | |
508 | ||
509 | The returned value is a list of font-entities. Each font-entity | |
510 | has :type property whose value is the same as the above `type'. | |
511 | It also has these properties if they are available from the | |
512 | corresponding font; :foundry, :family, :adstyle, :registry, | |
513 | :weight, :slant, :width, :size, :dpi, :spacing, :avgwidth. If | |
514 | the font is scalable, :size and :avgwidth must be 0. | |
515 | ||
516 | The `open' method of the same font-backend is called with one of | |
517 | the returned font-entities. If the backend needs additional | |
518 | information to be used in `open' method, this method can add any | |
519 | Lispy value by the property :font-entity to the entities. | |
520 | ||
875003e5 KH |
521 | This and the following `match' are the only APIs that allocate |
522 | font-entities. */ | |
fdb396e2 | 523 | Lisp_Object (*list) (struct frame *frame, Lisp_Object font_spec); |
c2f5bfd6 | 524 | |
81903466 | 525 | /* Return a font-entity most closely matching with FONT_SPEC on |
e38b9ee9 | 526 | FRAME. Which font property to consider, and how to calculate the |
81903466 | 527 | closeness is determined by the font backend, thus |
e38b9ee9 KH |
528 | `face-font-selection-order' is ignored here. |
529 | ||
530 | The properties that the font-entity has is the same as `list' | |
531 | method. */ | |
fdb396e2 | 532 | Lisp_Object (*match) (struct frame *f, Lisp_Object spec); |
dc377380 | 533 | |
217caa37 KH |
534 | /* Optional. |
535 | List available families. The value is a list of family names | |
536 | (symbols). */ | |
fdb396e2 | 537 | Lisp_Object (*list_family) (struct frame *f); |
c2f5bfd6 | 538 | |
217caa37 KH |
539 | /* Optional (if FONT_EXTRA_INDEX is not Lisp_Save_Value). |
540 | Free FONT_EXTRA_INDEX field of FONT_ENTITY. */ | |
383e0970 | 541 | void (*free_entity) (Lisp_Object font_entity); |
c2f5bfd6 KH |
542 | |
543 | /* Open a font specified by FONT_ENTITY on frame F. If the font is | |
544 | scalable, open it with PIXEL_SIZE. */ | |
a10c8269 | 545 | Lisp_Object (*open) (struct frame *f, Lisp_Object font_entity, |
383e0970 | 546 | int pixel_size); |
c2f5bfd6 KH |
547 | |
548 | /* Close FONT on frame F. */ | |
a10c8269 | 549 | void (*close) (struct frame *f, struct font *font); |
c2f5bfd6 | 550 | |
217caa37 KH |
551 | /* Optional (if FACE->extra is not used). |
552 | Prepare FACE for displaying characters by FONT on frame F by | |
553 | storing some data in FACE->extra. If successful, return 0. | |
554 | Otherwise, return -1. */ | |
a10c8269 | 555 | int (*prepare_face) (struct frame *f, struct face *face); |
c2f5bfd6 | 556 | |
217caa37 KH |
557 | /* Optional. |
558 | Done FACE for displaying characters by FACE->font on frame F. */ | |
a10c8269 | 559 | void (*done_face) (struct frame *f, struct face *face); |
c2f5bfd6 | 560 | |
217caa37 | 561 | /* Optional. |
50b426eb KH |
562 | If FONT (FONT-ENTITY or FONT-OBJECT) has a glyph for character C |
563 | (Unicode code point), return 1. If not, return 0. If FONT is | |
564 | FONT-ENTITY and it must be opened to check it, return -1. */ | |
383e0970 | 565 | int (*has_char) (Lisp_Object font, int c); |
c2f5bfd6 | 566 | |
51e4f4a8 | 567 | /* Return a glyph code of FONT for character C (Unicode code point). |
217caa37 | 568 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. */ |
383e0970 | 569 | unsigned (*encode_char) (struct font *font, int c); |
c2f5bfd6 | 570 | |
56dd2d86 | 571 | /* Compute the total metrics of the NGLYPHS glyphs specified by |
ef5e1a96 KH |
572 | the font FONT and the sequence of glyph codes CODE, and store the |
573 | result in METRICS. */ | |
383e0970 J |
574 | int (*text_extents) (struct font *font, |
575 | unsigned *code, int nglyphs, | |
576 | struct font_metrics *metrics); | |
c2f5bfd6 | 577 | |
217caa37 KH |
578 | /* Optional. |
579 | Draw glyphs between FROM and TO of S->char2b at (X Y) pixel | |
a864ef14 PE |
580 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND, |
581 | fill the background in advance. It is assured that WITH_BACKGROUND | |
582 | is false when (FROM > 0 || TO < S->nchars). */ | |
383e0970 | 583 | int (*draw) (struct glyph_string *s, int from, int to, |
a864ef14 | 584 | int x, int y, bool with_background); |
c2f5bfd6 | 585 | |
217caa37 KH |
586 | /* Optional. |
587 | Store bitmap data for glyph-code CODE of FONT in BITMAP. It is | |
da6062e6 | 588 | intended that this method is called from the other font-driver |
217caa37 | 589 | for actual drawing. */ |
383e0970 J |
590 | int (*get_bitmap) (struct font *font, unsigned code, |
591 | struct font_bitmap *bitmap, | |
592 | int bits_per_pixel); | |
c2f5bfd6 | 593 | |
217caa37 KH |
594 | /* Optional. |
595 | Free bitmap data in BITMAP. */ | |
383e0970 | 596 | void (*free_bitmap) (struct font *font, struct font_bitmap *bitmap); |
c2f5bfd6 | 597 | |
217caa37 KH |
598 | /* Optional. |
599 | Return an outline data for glyph-code CODE of FONT. The format | |
600 | of the outline data depends on the font-driver. */ | |
383e0970 | 601 | void *(*get_outline) (struct font *font, unsigned code); |
c2f5bfd6 | 602 | |
217caa37 KH |
603 | /* Optional. |
604 | Free OUTLINE (that is obtained by the above method). */ | |
383e0970 | 605 | void (*free_outline) (struct font *font, void *outline); |
c2f5bfd6 | 606 | |
217caa37 KH |
607 | /* Optional. |
608 | Get coordinates of the INDEXth anchor point of the glyph whose | |
c2f5bfd6 | 609 | code is CODE. Store the coordinates in *X and *Y. Return 0 if |
bbd240ce | 610 | the operations was successful. Otherwise return -1. */ |
383e0970 J |
611 | int (*anchor_point) (struct font *font, unsigned code, int index, |
612 | int *x, int *y); | |
c2f5bfd6 | 613 | |
217caa37 KH |
614 | /* Optional. |
615 | Return a list describing which scripts/languages FONT | |
c2f5bfd6 | 616 | supports by which GSUB/GPOS features of OpenType tables. */ |
383e0970 | 617 | Lisp_Object (*otf_capability) (struct font *font); |
c2f5bfd6 | 618 | |
217caa37 | 619 | /* Optional. |
b6c8772a KH |
620 | Apply FONT's OTF-FEATURES to the glyph string. |
621 | ||
622 | FEATURES specifies which OTF features to apply in this format: | |
623 | (SCRIPT LANGSYS GSUB-FEATURE GPOS-FEATURE) | |
56dd2d86 | 624 | See the documentation of `font-drive-otf' for the details. |
c2f5bfd6 KH |
625 | |
626 | This method applies the specified features to the codes in the | |
627 | elements of GSTRING-IN (between FROMth and TOth). The output | |
628 | codes are stored in GSTRING-OUT at the IDXth element and the | |
629 | following elements. | |
630 | ||
631 | Return the number of output codes. If none of the features are | |
632 | applicable to the input data, return 0. If GSTRING-OUT is too | |
633 | short, return -1. */ | |
383e0970 J |
634 | int (*otf_drive) (struct font *font, Lisp_Object features, |
635 | Lisp_Object gstring_in, int from, int to, | |
a864ef14 | 636 | Lisp_Object gstring_out, int idx, bool alternate_subst); |
5a74d0e5 KH |
637 | |
638 | /* Optional. | |
639 | Make the font driver ready for frame F. Usually this function | |
8057d3c0 | 640 | makes some data specific to F and stores it in F by calling |
5a74d0e5 | 641 | font_put_frame_data (). */ |
a10c8269 | 642 | int (*start_for_frame) (struct frame *f); |
4a3f9f7f | 643 | |
5a74d0e5 KH |
644 | /* Optional. |
645 | End using the driver for frame F. Usually this function free | |
646 | some data stored for F. */ | |
a10c8269 | 647 | int (*end_for_frame) (struct frame *f); |
4b4836de KH |
648 | |
649 | /* Optional. | |
778686b1 | 650 | |
8057d3c0 KH |
651 | Shape text in GSTRING. See the docstring of |
652 | `composition-get-gstring' for the format of GSTRING. If the | |
653 | (N+1)th element of GSTRING is nil, input of shaping is from the | |
654 | 1st to (N)th elements. In each input glyph, FROM, TO, CHAR, and | |
655 | CODE are already set. | |
778686b1 KH |
656 | |
657 | This function updates all fields of the input glyphs. If the | |
658 | output glyphs (M) are more than the input glyphs (N), (N+1)th | |
8057d3c0 KH |
659 | through (M)th elements of GSTRING are updated possibly by making |
660 | a new glyph object and storing it in GSTRING. If (M) is greater | |
661 | than the length of GSTRING, nil should be return. In that case, | |
662 | this function is called again with the larger GSTRING. */ | |
383e0970 | 663 | Lisp_Object (*shape) (Lisp_Object lgstring); |
875003e5 KH |
664 | |
665 | /* Optional. | |
666 | ||
667 | If FONT is usable on frame F, return 0. Otherwise return -1. | |
c63715cf KH |
668 | This method is used only for debugging. If this method is NULL, |
669 | Emacs assumes that the font is usable on any frame. */ | |
a10c8269 | 670 | int (*check) (struct frame *f, struct font *font); |
c63715cf KH |
671 | |
672 | /* Optional. | |
673 | ||
674 | Return the number of variation glyphs of character C supported by | |
675 | FONT. VARIATIONS is an array of 256 elements. If the variation | |
676 | selector N (1..256) defines a glyph, that glyph code is stored in | |
677 | the (N-1)th element of VARIATIONS. */ | |
383e0970 J |
678 | int (*get_variation_glyphs) (struct font *font, |
679 | int c, unsigned variations[256]); | |
637fa988 | 680 | |
383e0970 | 681 | void (*filter_properties) (Lisp_Object font, Lisp_Object properties); |
d0cf45b7 JD |
682 | |
683 | /* Optional. | |
684 | ||
685 | Return non-zero if FONT_OBJECT can be used as a (cached) font | |
686 | for ENTITY on frame F. */ | |
a864ef14 PE |
687 | bool (*cached_font_ok) (struct frame *f, |
688 | Lisp_Object font_object, | |
689 | Lisp_Object entity); | |
c2f5bfd6 KH |
690 | }; |
691 | ||
692 | ||
5a74d0e5 | 693 | /* Chain of font drivers. There's one global font driver list |
a10c8269 DA |
694 | (font_driver_list in font.c). In addition, each frame has |
695 | its own font driver list at F->font_driver_list. */ | |
5a74d0e5 | 696 | |
c2f5bfd6 KH |
697 | struct font_driver_list |
698 | { | |
a864ef14 | 699 | /* True iff this driver is currently used. It is ignored in the global |
5a74d0e5 | 700 | font driver list.*/ |
a864ef14 | 701 | bool on; |
5a74d0e5 | 702 | /* Pointer to the font driver. */ |
c2f5bfd6 | 703 | struct font_driver *driver; |
5a74d0e5 | 704 | /* Pointer to the next element of the chain. */ |
c2f5bfd6 KH |
705 | struct font_driver_list *next; |
706 | }; | |
707 | ||
5a74d0e5 | 708 | |
a10c8269 DA |
709 | /* Chain of arbitrary data specific to each font driver. |
710 | Each frame has its own font data list at F->font_data_list. */ | |
5a74d0e5 KH |
711 | |
712 | struct font_data_list | |
713 | { | |
714 | /* Pointer to the font driver. */ | |
715 | struct font_driver *driver; | |
716 | /* Data specific to the font driver. */ | |
717 | void *data; | |
718 | /* Pointer to the next element of the chain. */ | |
719 | struct font_data_list *next; | |
720 | }; | |
721 | ||
92470028 PE |
722 | extern Lisp_Object copy_font_spec (Lisp_Object); |
723 | extern Lisp_Object merge_font_spec (Lisp_Object, Lisp_Object); | |
c2f5bfd6 | 724 | |
383e0970 J |
725 | extern Lisp_Object font_make_entity (void); |
726 | extern Lisp_Object font_make_object (int, Lisp_Object, int); | |
727 | ||
728 | extern Lisp_Object find_font_encoding (Lisp_Object); | |
729 | extern int font_registry_charsets (Lisp_Object, struct charset **, | |
730 | struct charset **); | |
731 | extern int font_style_to_value (enum font_property_index prop, | |
a864ef14 | 732 | Lisp_Object name, bool noerror); |
383e0970 J |
733 | extern Lisp_Object font_style_symbolic (Lisp_Object font, |
734 | enum font_property_index prop, | |
a864ef14 | 735 | bool for_face); |
383e0970 | 736 | |
a864ef14 | 737 | extern bool font_match_p (Lisp_Object spec, Lisp_Object font); |
fdb396e2 | 738 | extern Lisp_Object font_list_entities (struct frame *, Lisp_Object); |
383e0970 J |
739 | |
740 | extern Lisp_Object font_get_name (Lisp_Object font_object); | |
741 | extern Lisp_Object font_spec_from_name (Lisp_Object font_name); | |
742 | extern Lisp_Object font_get_frame (Lisp_Object font_object); | |
a10c8269 | 743 | extern int font_has_char (struct frame *, Lisp_Object, int); |
383e0970 J |
744 | |
745 | extern void font_clear_prop (Lisp_Object *attrs, | |
746 | enum font_property_index prop); | |
a10c8269 | 747 | extern Lisp_Object font_find_for_lface (struct frame *f, Lisp_Object *lface, |
383e0970 | 748 | Lisp_Object spec, int c); |
a10c8269 | 749 | extern Lisp_Object font_open_for_lface (struct frame *f, Lisp_Object entity, |
383e0970 J |
750 | Lisp_Object *lface, |
751 | Lisp_Object spec); | |
a10c8269 | 752 | extern Lisp_Object font_load_for_lface (struct frame *f, Lisp_Object *lface, |
383e0970 | 753 | Lisp_Object spec); |
a10c8269 DA |
754 | extern void font_prepare_for_face (struct frame *f, struct face *face); |
755 | extern void font_done_for_face (struct frame *f, struct face *face); | |
a45543bc | 756 | extern void clear_font_cache (struct frame *); |
383e0970 | 757 | |
a10c8269 DA |
758 | extern Lisp_Object font_open_by_spec (struct frame *f, Lisp_Object spec); |
759 | extern Lisp_Object font_open_by_name (struct frame *f, Lisp_Object name); | |
c2f5bfd6 | 760 | |
ccd6111c | 761 | extern Lisp_Object font_intern_prop (const char *str, ptrdiff_t len, |
a864ef14 | 762 | bool force_symbol); |
383e0970 J |
763 | extern void font_update_sort_order (int *order); |
764 | ||
765 | extern void font_parse_family_registry (Lisp_Object family, | |
766 | Lisp_Object registry, | |
767 | Lisp_Object spec); | |
383e0970 | 768 | |
984e7f30 | 769 | extern int font_parse_xlfd (char *name, ptrdiff_t len, Lisp_Object font); |
d923b542 DA |
770 | extern ptrdiff_t font_unparse_xlfd (Lisp_Object font, int pixel_size, |
771 | char *name, int bytes); | |
383e0970 | 772 | extern int font_unparse_fcname (Lisp_Object font, int pixel_size, |
09d93395 | 773 | char *name, int bytes); |
a10c8269 DA |
774 | extern void register_font_driver (struct font_driver *driver, struct frame *f); |
775 | extern void free_font_driver_list (struct frame *f); | |
776 | extern Lisp_Object font_update_drivers (struct frame *f, Lisp_Object list); | |
5a655b9f | 777 | extern Lisp_Object font_range (ptrdiff_t, ptrdiff_t, ptrdiff_t *, |
c7c7a80c SM |
778 | struct window *, struct face *, |
779 | Lisp_Object); | |
383e0970 | 780 | extern void font_fill_lglyph_metrics (Lisp_Object, Lisp_Object); |
c2f5bfd6 | 781 | |
383e0970 J |
782 | extern Lisp_Object font_put_extra (Lisp_Object font, Lisp_Object prop, |
783 | Lisp_Object val); | |
c2f5bfd6 | 784 | |
a10c8269 | 785 | extern int font_put_frame_data (struct frame *f, |
383e0970 J |
786 | struct font_driver *driver, |
787 | void *data); | |
a10c8269 | 788 | extern void *font_get_frame_data (struct frame *f, |
383e0970 | 789 | struct font_driver *driver); |
5a74d0e5 | 790 | |
9fa82824 DP |
791 | extern void font_filter_properties (Lisp_Object font, |
792 | Lisp_Object alist, | |
3106121c YM |
793 | const char *const boolean_properties[], |
794 | const char *const non_boolean_properties[]); | |
9fa82824 | 795 | |
c2f5bfd6 KH |
796 | #ifdef HAVE_FREETYPE |
797 | extern struct font_driver ftfont_driver; | |
99f3388e | 798 | extern void syms_of_ftfont (void); |
c2f5bfd6 KH |
799 | #endif /* HAVE_FREETYPE */ |
800 | #ifdef HAVE_X_WINDOWS | |
801 | extern struct font_driver xfont_driver; | |
99f3388e DN |
802 | extern void syms_of_xfont (void); |
803 | extern void syms_of_ftxfont (void); | |
c2f5bfd6 | 804 | #ifdef HAVE_XFT |
a411ac43 | 805 | extern Lisp_Object Qxft; |
c2f5bfd6 | 806 | extern struct font_driver xftfont_driver; |
99f3388e | 807 | extern void syms_of_xftfont (void); |
1675728f PE |
808 | #elif defined HAVE_FREETYPE |
809 | extern struct font_driver ftxfont_driver; | |
810 | #endif | |
99f3388e DN |
811 | #ifdef HAVE_BDFFONT |
812 | extern void syms_of_bdffont (void); | |
813 | #endif /* HAVE_BDFFONT */ | |
c2f5bfd6 | 814 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 815 | #ifdef HAVE_NTGUI |
c2f5bfd6 | 816 | extern struct font_driver w32font_driver; |
97724679 | 817 | extern struct font_driver uniscribe_font_driver; |
99f3388e | 818 | extern void syms_of_w32font (void); |
0fda9b75 | 819 | #endif /* HAVE_NTGUI */ |
edfda783 | 820 | #ifdef HAVE_NS |
99f3388e | 821 | extern Lisp_Object Qfontsize; |
edfda783 | 822 | extern struct font_driver nsfont_driver; |
99f3388e | 823 | extern void syms_of_nsfont (void); |
edfda783 | 824 | #endif /* HAVE_NS */ |
c2f5bfd6 | 825 | |
f6a651cb KH |
826 | #ifndef FONT_DEBUG |
827 | #define FONT_DEBUG | |
828 | #endif | |
829 | ||
2f7c71a1 | 830 | extern Lisp_Object QCfoundry; |
99f3388e | 831 | |
675e2c69 DN |
832 | extern void font_add_log (const char *, Lisp_Object, Lisp_Object); |
833 | extern void font_deferred_log (const char *, Lisp_Object, Lisp_Object); | |
f6a651cb | 834 | |
59314caf KH |
835 | #define FONT_ADD_LOG(ACTION, ARG, RESULT) \ |
836 | do { \ | |
837 | if (! EQ (Vfont_log, Qt)) \ | |
838 | font_add_log ((ACTION), (ARG), (RESULT)); \ | |
839 | } while (0) | |
840 | ||
841 | #define FONT_DEFERRED_LOG(ACTION, ARG, RESULT) \ | |
842 | do { \ | |
843 | if (! EQ (Vfont_log, Qt)) \ | |
844 | font_deferred_log ((ACTION), (ARG), (RESULT)); \ | |
845 | } while (0) | |
846 | ||
c2f5bfd6 | 847 | #endif /* not EMACS_FONT_H */ |