Commit | Line | Data |
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c2f5bfd6 | 1 | /* xftfont.c -- XFT font driver. |
114f9c96 GM |
2 | Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008, 2009, 2010 | |
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 | ||
9ec0b715 | 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 |
9ec0b715 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 | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
c2f5bfd6 KH |
21 | |
22 | #include <config.h> | |
23 | #include <stdio.h> | |
d7306fe6 | 24 | #include <setjmp.h> |
c2f5bfd6 KH |
25 | #include <X11/Xlib.h> |
26 | #include <X11/Xft/Xft.h> | |
27 | ||
28 | #include "lisp.h" | |
29 | #include "dispextern.h" | |
30 | #include "xterm.h" | |
31 | #include "frame.h" | |
32 | #include "blockinput.h" | |
33 | #include "character.h" | |
34 | #include "charset.h" | |
35 | #include "fontset.h" | |
36 | #include "font.h" | |
4613015e | 37 | #include "ftfont.h" |
c2f5bfd6 KH |
38 | |
39 | /* Xft font driver. */ | |
40 | ||
41 | static Lisp_Object Qxft; | |
223e5fc6 JD |
42 | static Lisp_Object QChinting, QCautohint, QChintstyle, QCrgba, QCembolden, |
43 | QClcdfilter; | |
c2f5bfd6 KH |
44 | |
45 | /* The actual structure for Xft font that can be casted to struct | |
46 | font. */ | |
47 | ||
48 | struct xftfont_info | |
49 | { | |
50 | struct font font; | |
91ce2415 | 51 | /* The following five members must be here in this order to be |
0fce2b40 | 52 | compatible with struct ftfont_info (in ftfont.c). */ |
4613015e KH |
53 | #ifdef HAVE_LIBOTF |
54 | int maybe_otf; /* Flag to tell if this may be OTF or not. */ | |
55 | OTF *otf; | |
794eba0f | 56 | #endif /* HAVE_LIBOTF */ |
0fce2b40 | 57 | FT_Size ft_size; |
b0c25608 | 58 | int index; |
91ce2415 | 59 | FT_Matrix matrix; |
0fce2b40 KH |
60 | Display *display; |
61 | int screen; | |
62 | XftFont *xftfont; | |
c2f5bfd6 KH |
63 | }; |
64 | ||
65 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 66 | |
c2f5bfd6 KH |
67 | struct xftface_info |
68 | { | |
10aca0f7 KH |
69 | XftColor xft_fg; /* color for face->foreground */ |
70 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
71 | }; |
72 | ||
73 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
74 | struct xftface_info *, | |
75 | XftColor *fg, XftColor *bg)); | |
c2f5bfd6 KH |
76 | |
77 | ||
10aca0f7 KH |
78 | /* Setup foreground and background colors of GC into FG and BG. If |
79 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
80 | may be NULL. */ | |
81 | ||
c2f5bfd6 KH |
82 | static void |
83 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
84 | FRAME_PTR f; | |
85 | struct face *face; | |
86 | GC gc; | |
87 | struct xftface_info *xftface_info; | |
88 | XftColor *fg, *bg; | |
89 | { | |
90 | if (xftface_info && face->gc == gc) | |
91 | { | |
92 | *fg = xftface_info->xft_fg; | |
93 | if (bg) | |
94 | *bg = xftface_info->xft_bg; | |
95 | } | |
96 | else | |
97 | { | |
98 | XGCValues xgcv; | |
99 | int fg_done = 0, bg_done = 0; | |
100 | ||
101 | BLOCK_INPUT; | |
102 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
103 | GCForeground | GCBackground, &xgcv); | |
104 | if (xftface_info) | |
105 | { | |
106 | if (xgcv.foreground == face->foreground) | |
107 | *fg = xftface_info->xft_fg, fg_done = 1; | |
108 | else if (xgcv.foreground == face->background) | |
109 | *fg = xftface_info->xft_bg, fg_done = 1; | |
110 | if (! bg) | |
111 | bg_done = 1; | |
112 | else if (xgcv.background == face->background) | |
113 | *bg = xftface_info->xft_bg, bg_done = 1; | |
114 | else if (xgcv.background == face->foreground) | |
115 | *bg = xftface_info->xft_fg, bg_done = 1; | |
116 | } | |
117 | ||
118 | if (fg_done + bg_done < 2) | |
119 | { | |
120 | XColor colors[2]; | |
121 | ||
122 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
123 | if (bg) | |
124 | colors[1].pixel = bg->pixel = xgcv.background; | |
125 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
126 | bg ? 2 : 1); | |
127 | fg->color.alpha = 0xFFFF; | |
128 | fg->color.red = colors[0].red; | |
129 | fg->color.green = colors[0].green; | |
130 | fg->color.blue = colors[0].blue; | |
131 | if (bg) | |
132 | { | |
133 | bg->color.alpha = 0xFFFF; | |
134 | bg->color.red = colors[1].red; | |
135 | bg->color.green = colors[1].green; | |
136 | bg->color.blue = colors[1].blue; | |
137 | } | |
138 | } | |
139 | UNBLOCK_INPUT; | |
140 | } | |
141 | } | |
142 | ||
c2f5bfd6 KH |
143 | |
144 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 145 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
3528e709 | 146 | static Lisp_Object xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
147 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); |
148 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
149 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
6570a1c4 | 150 | static int xftfont_has_char P_ ((Lisp_Object, int)); |
c2f5bfd6 KH |
151 | static unsigned xftfont_encode_char P_ ((struct font *, int)); |
152 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
153 | struct font_metrics *)); | |
154 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
a92ee6bf | 155 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); |
c2f5bfd6 KH |
156 | |
157 | struct font_driver xftfont_driver; | |
158 | ||
159 | static Lisp_Object | |
160 | xftfont_list (frame, spec) | |
161 | Lisp_Object frame; | |
162 | Lisp_Object spec; | |
163 | { | |
3528e709 | 164 | Lisp_Object list = ftfont_driver.list (frame, spec), tail; |
8510724d | 165 | |
3528e709 KH |
166 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
167 | ASET (XCAR (tail), FONT_TYPE_INDEX, Qxft); | |
168 | return list; | |
c2f5bfd6 KH |
169 | } |
170 | ||
10aca0f7 KH |
171 | static Lisp_Object |
172 | xftfont_match (frame, spec) | |
173 | Lisp_Object frame; | |
174 | Lisp_Object spec; | |
175 | { | |
176 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
177 | ||
3528e709 | 178 | if (! NILP (entity)) |
10aca0f7 KH |
179 | ASET (entity, FONT_TYPE_INDEX, Qxft); |
180 | return entity; | |
181 | } | |
182 | ||
1cf6763f | 183 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *, Lisp_Object)); |
0fce2b40 | 184 | extern FcCharSet *ftfont_get_fc_charset P_ ((Lisp_Object)); |
81094fab | 185 | extern Lisp_Object QCantialias; |
98d12656 | 186 | |
c2f5bfd6 KH |
187 | static FcChar8 ascii_printable[95]; |
188 | ||
637fa988 JD |
189 | static void |
190 | xftfont_fix_match (pat, match) | |
191 | FcPattern *pat, *match; | |
192 | { | |
193 | /* These values are not used for matching (except antialias), but for | |
194 | rendering, so make sure they are carried over to the match. | |
195 | We also put antialias here because most fonts are antialiased, so | |
196 | the match will have antialias true. */ | |
197 | ||
198 | FcBool b = FcTrue; | |
199 | int i; | |
200 | double dpi; | |
201 | ||
202 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &b); | |
203 | if (! b) | |
204 | { | |
205 | FcPatternDel (match, FC_ANTIALIAS); | |
206 | FcPatternAddBool (match, FC_ANTIALIAS, FcFalse); | |
207 | } | |
208 | FcPatternGetBool (pat, FC_HINTING, 0, &b); | |
209 | if (! b) | |
210 | { | |
211 | FcPatternDel (match, FC_HINTING); | |
212 | FcPatternAddBool (match, FC_HINTING, FcFalse); | |
213 | } | |
214 | if (FcResultMatch == FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &i)) | |
215 | { | |
216 | FcPatternDel (match, FC_HINT_STYLE); | |
217 | FcPatternAddInteger (match, FC_HINT_STYLE, i); | |
218 | } | |
21050de1 | 219 | #ifndef FC_LCD_FILTER |
a6eb20d8 | 220 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
21050de1 JD |
221 | #define FC_LCD_FILTER "lcdfilter" |
222 | #endif | |
637fa988 JD |
223 | if (FcResultMatch == FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &i)) |
224 | { | |
225 | FcPatternDel (match, FC_LCD_FILTER); | |
226 | FcPatternAddInteger (match, FC_LCD_FILTER, i); | |
227 | } | |
228 | if (FcResultMatch == FcPatternGetInteger (pat, FC_RGBA, 0, &i)) | |
229 | { | |
230 | FcPatternDel (match, FC_RGBA); | |
231 | FcPatternAddInteger (match, FC_RGBA, i); | |
232 | } | |
233 | if (FcResultMatch == FcPatternGetDouble (pat, FC_DPI, 0, &dpi)) | |
234 | { | |
235 | FcPatternDel (match, FC_DPI); | |
236 | FcPatternAddDouble (match, FC_DPI, dpi); | |
237 | } | |
238 | } | |
239 | ||
d0cf45b7 JD |
240 | static void |
241 | xftfont_add_rendering_parameters (pat, entity) | |
242 | FcPattern *pat; | |
243 | Lisp_Object entity; | |
244 | { | |
245 | Lisp_Object tail; | |
246 | int ival; | |
247 | ||
248 | for (tail = AREF (entity, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) | |
249 | { | |
250 | Lisp_Object key = XCAR (XCAR (tail)); | |
251 | Lisp_Object val = XCDR (XCAR (tail)); | |
252 | ||
253 | if (EQ (key, QCantialias)) | |
254 | FcPatternAddBool (pat, FC_ANTIALIAS, NILP (val) ? FcFalse : FcTrue); | |
255 | else if (EQ (key, QChinting)) | |
256 | FcPatternAddBool (pat, FC_HINTING, NILP (val) ? FcFalse : FcTrue); | |
257 | else if (EQ (key, QCautohint)) | |
258 | FcPatternAddBool (pat, FC_AUTOHINT, NILP (val) ? FcFalse : FcTrue); | |
259 | else if (EQ (key, QChintstyle)) | |
260 | { | |
261 | if (INTEGERP (val)) | |
262 | FcPatternAddInteger (pat, FC_HINT_STYLE, XINT (val)); | |
263 | else if (SYMBOLP (val) | |
264 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
265 | FcPatternAddInteger (pat, FC_HINT_STYLE, ival); | |
266 | } | |
267 | else if (EQ (key, QCrgba)) | |
268 | { | |
269 | if (INTEGERP (val)) | |
270 | FcPatternAddInteger (pat, FC_RGBA, XINT (val)); | |
271 | else if (SYMBOLP (val) | |
272 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
273 | FcPatternAddInteger (pat, FC_RGBA, ival); | |
274 | } | |
275 | else if (EQ (key, QClcdfilter)) | |
276 | { | |
277 | if (INTEGERP (val)) | |
278 | FcPatternAddInteger (pat, FC_LCD_FILTER, ival = XINT (val)); | |
279 | else if (SYMBOLP (val) | |
280 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
281 | FcPatternAddInteger (pat, FC_LCD_FILTER, ival); | |
282 | } | |
283 | #ifdef FC_EMBOLDEN | |
284 | else if (EQ (key, QCembolden)) | |
285 | FcPatternAddBool (pat, FC_EMBOLDEN, NILP (val) ? FcFalse : FcTrue); | |
286 | #endif | |
287 | } | |
288 | } | |
289 | ||
3528e709 | 290 | static Lisp_Object |
c2f5bfd6 KH |
291 | xftfont_open (f, entity, pixel_size) |
292 | FRAME_PTR f; | |
293 | Lisp_Object entity; | |
294 | int pixel_size; | |
295 | { | |
81094fab | 296 | FcResult result; |
c2f5bfd6 | 297 | Display *display = FRAME_X_DISPLAY (f); |
d0cf45b7 | 298 | Lisp_Object val, filename, index, font_object; |
81094fab | 299 | FcPattern *pat = NULL, *match; |
2d93c6bd | 300 | struct xftfont_info *xftfont_info = NULL; |
c2f5bfd6 KH |
301 | struct font *font; |
302 | double size = 0; | |
2d93c6bd | 303 | XftFont *xftfont = NULL; |
c2f5bfd6 | 304 | int spacing; |
3528e709 | 305 | char name[256]; |
d0cf45b7 | 306 | int len, i; |
91c5bb27 | 307 | XGlyphInfo extents; |
365131ac | 308 | FT_Face ft_face; |
91ce2415 | 309 | FcMatrix *matrix; |
c2f5bfd6 | 310 | |
3528e709 | 311 | val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); |
686ee703 | 312 | if (! CONSP (val)) |
3528e709 | 313 | return Qnil; |
686ee703 KH |
314 | val = XCDR (val); |
315 | filename = XCAR (val); | |
0fce2b40 | 316 | index = XCDR (val); |
c2f5bfd6 KH |
317 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
318 | if (size == 0) | |
319 | size = pixel_size; | |
320 | pat = FcPatternCreate (); | |
81094fab KH |
321 | FcPatternAddInteger (pat, FC_WEIGHT, FONT_WEIGHT_NUMERIC (entity)); |
322 | i = FONT_SLANT_NUMERIC (entity) - 100; | |
323 | if (i < 0) i = 0; | |
324 | FcPatternAddInteger (pat, FC_SLANT, i); | |
325 | FcPatternAddInteger (pat, FC_WIDTH, FONT_WIDTH_NUMERIC (entity)); | |
c2f5bfd6 | 326 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); |
3cc2aca0 KH |
327 | val = AREF (entity, FONT_FAMILY_INDEX); |
328 | if (! NILP (val)) | |
329 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
dc2226d0 KH |
330 | val = AREF (entity, FONT_FOUNDRY_INDEX); |
331 | if (! NILP (val)) | |
332 | FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
333 | val = AREF (entity, FONT_SPACING_INDEX); | |
334 | if (! NILP (val)) | |
335 | FcPatternAddInteger (pat, FC_SPACING, XINT (val)); | |
336 | val = AREF (entity, FONT_DPI_INDEX); | |
337 | if (! NILP (val)) | |
338 | { | |
339 | double dbl = XINT (val); | |
340 | ||
341 | FcPatternAddDouble (pat, FC_DPI, dbl); | |
342 | } | |
343 | val = AREF (entity, FONT_AVGWIDTH_INDEX); | |
344 | if (INTEGERP (val) && XINT (val) == 0) | |
345 | FcPatternAddBool (pat, FC_SCALABLE, FcTrue); | |
0fce2b40 KH |
346 | /* This is necessary to identify the exact font (e.g. 10x20.pcf.gz |
347 | over 10x20-ISO8859-1.pcf.gz). */ | |
348 | FcPatternAddCharSet (pat, FC_CHARSET, ftfont_get_fc_charset (entity)); | |
dc2226d0 | 349 | |
d0cf45b7 | 350 | xftfont_add_rendering_parameters (pat, entity); |
dcce3c58 | 351 | |
0fce2b40 KH |
352 | FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename)); |
353 | FcPatternAddInteger (pat, FC_INDEX, XINT (index)); | |
8510724d | 354 | |
0fce2b40 | 355 | |
dcce3c58 | 356 | BLOCK_INPUT; |
9cb363db YM |
357 | /* Make sure that the Xrender extension is added before the Xft one. |
358 | Otherwise, the close-display hook set by Xft is called after the | |
359 | one for Xrender, and the former tries to re-add the latter. This | |
360 | results in inconsistency of internal states and leads to X | |
361 | protocol error when one reconnects to the same X server. | |
362 | (Bug#1696) */ | |
363 | { | |
364 | int event_base, error_base; | |
365 | XRenderQueryExtension (display, &event_base, &error_base); | |
366 | } | |
637fa988 JD |
367 | |
368 | /* Substitute in values from X resources and XftDefaultSet. */ | |
369 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); | |
81094fab | 370 | match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result); |
637fa988 | 371 | xftfont_fix_match (pat, match); |
223e5fc6 | 372 | |
81094fab KH |
373 | FcPatternDestroy (pat); |
374 | xftfont = XftFontOpenPattern (display, match); | |
99061dfc | 375 | if (!xftfont) |
5c629bf6 | 376 | { |
99061dfc | 377 | UNBLOCK_INPUT; |
5c629bf6 CY |
378 | XftPatternDestroy (match); |
379 | return Qnil; | |
380 | } | |
99061dfc CY |
381 | ft_face = XftLockFace (xftfont); |
382 | UNBLOCK_INPUT; | |
383 | ||
c2f5bfd6 KH |
384 | /* We should not destroy PAT here because it is kept in XFTFONT and |
385 | destroyed automatically when XFTFONT is closed. */ | |
0fce2b40 | 386 | font_object = font_make_object (VECSIZE (struct xftfont_info), entity, size); |
3528e709 | 387 | ASET (font_object, FONT_TYPE_INDEX, Qxft); |
3528e709 KH |
388 | len = font_unparse_xlfd (entity, size, name, 256); |
389 | if (len > 0) | |
2781b4e0 | 390 | ASET (font_object, FONT_NAME_INDEX, make_string (name, len)); |
3528e709 KH |
391 | len = font_unparse_fcname (entity, size, name, 256); |
392 | if (len > 0) | |
2781b4e0 | 393 | ASET (font_object, FONT_FULLNAME_INDEX, make_string (name, len)); |
3528e709 KH |
394 | else |
395 | ASET (font_object, FONT_FULLNAME_INDEX, | |
396 | AREF (font_object, FONT_NAME_INDEX)); | |
686ee703 KH |
397 | ASET (font_object, FONT_FILE_INDEX, filename); |
398 | ASET (font_object, FONT_FORMAT_INDEX, | |
1cf6763f | 399 | ftfont_font_format (xftfont->pattern, filename)); |
3528e709 KH |
400 | font = XFONT_OBJECT (font_object); |
401 | font->pixel_size = pixel_size; | |
402 | font->driver = &xftfont_driver; | |
403 | font->encoding_charset = font->repertory_charset = -1; | |
404 | ||
405 | xftfont_info = (struct xftfont_info *) font; | |
c2f5bfd6 KH |
406 | xftfont_info->display = display; |
407 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
408 | xftfont_info->xftfont = xftfont; | |
91ce2415 KH |
409 | /* This means that there's no need of transformation. */ |
410 | xftfont_info->matrix.xx = 0; | |
411 | if (FcPatternGetMatrix (xftfont->pattern, FC_MATRIX, 0, &matrix) | |
412 | == FcResultMatch) | |
413 | { | |
414 | xftfont_info->matrix.xx = 0x10000L * matrix->xx; | |
415 | xftfont_info->matrix.yy = 0x10000L * matrix->yy; | |
416 | xftfont_info->matrix.xy = 0x10000L * matrix->xy; | |
417 | xftfont_info->matrix.yx = 0x10000L * matrix->yx; | |
418 | } | |
c2f5bfd6 KH |
419 | font->pixel_size = size; |
420 | font->driver = &xftfont_driver; | |
686ee703 KH |
421 | if (INTEGERP (AREF (entity, FONT_SPACING_INDEX))) |
422 | spacing = XINT (AREF (entity, FONT_SPACING_INDEX)); | |
423 | else | |
c2f5bfd6 | 424 | spacing = FC_PROPORTIONAL; |
91c5bb27 KH |
425 | if (! ascii_printable[0]) |
426 | { | |
427 | int i; | |
428 | for (i = 0; i < 95; i++) | |
429 | ascii_printable[i] = ' ' + i; | |
430 | } | |
3528e709 | 431 | BLOCK_INPUT; |
3d8416fc | 432 | if (spacing != FC_PROPORTIONAL && spacing != FC_DUAL) |
91c5bb27 | 433 | { |
3528e709 | 434 | font->min_width = font->average_width = font->space_width |
91c5bb27 KH |
435 | = xftfont->max_advance_width; |
436 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
437 | } | |
c2f5bfd6 KH |
438 | else |
439 | { | |
c2f5bfd6 | 440 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
3528e709 KH |
441 | font->space_width = extents.xOff; |
442 | if (font->space_width <= 0) | |
c2f5bfd6 | 443 | /* dirty workaround */ |
8510724d | 444 | font->space_width = pixel_size; |
c2f5bfd6 | 445 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
3528e709 | 446 | font->average_width = (font->space_width + extents.xOff) / 95; |
c2f5bfd6 | 447 | } |
dcce3c58 | 448 | UNBLOCK_INPUT; |
c2f5bfd6 | 449 | |
91c5bb27 | 450 | font->ascent = xftfont->ascent; |
91c5bb27 | 451 | font->descent = xftfont->descent; |
81094fab KH |
452 | if (pixel_size >= 5) |
453 | { | |
454 | /* The above condition is a dirty workaround because | |
455 | XftTextExtents8 behaves strangely for some fonts | |
456 | (e.g. "Dejavu Sans Mono") when pixel_size is less than 5. */ | |
457 | if (font->ascent < extents.y) | |
458 | font->ascent = extents.y; | |
459 | if (font->descent < extents.height - extents.y) | |
460 | font->descent = extents.height - extents.y; | |
461 | } | |
3528e709 | 462 | font->height = font->ascent + font->descent; |
91c5bb27 | 463 | |
3528e709 | 464 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) |
c2f5bfd6 | 465 | { |
3528e709 KH |
466 | int upEM = ft_face->units_per_EM; |
467 | ||
468 | font->underline_position = -ft_face->underline_position * size / upEM; | |
bc981e4e | 469 | font->underline_thickness = ft_face->underline_thickness * size / upEM; |
951b8112 KH |
470 | if (font->underline_thickness > 2) |
471 | font->underline_position -= font->underline_thickness / 2; | |
c2f5bfd6 KH |
472 | } |
473 | else | |
474 | { | |
3528e709 KH |
475 | font->underline_position = -1; |
476 | font->underline_thickness = 0; | |
c2f5bfd6 | 477 | } |
3528e709 KH |
478 | #ifdef HAVE_LIBOTF |
479 | xftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
480 | xftfont_info->otf = NULL; | |
481 | #endif /* HAVE_LIBOTF */ | |
0fce2b40 | 482 | xftfont_info->ft_size = ft_face->size; |
c2f5bfd6 | 483 | |
3528e709 KH |
484 | /* Unfortunately Xft doesn't provide a way to get minimum char |
485 | width. So, we use space_width instead. */ | |
486 | font->min_width = font->space_width; | |
2d93c6bd | 487 | |
3528e709 KH |
488 | font->baseline_offset = 0; |
489 | font->relative_compose = 0; | |
490 | font->default_ascent = 0; | |
491 | font->vertical_centering = 0; | |
0fce2b40 KH |
492 | #ifdef FT_BDF_H |
493 | if (! (ft_face->face_flags & FT_FACE_FLAG_SFNT)) | |
494 | { | |
495 | BDF_PropertyRec rec; | |
496 | ||
497 | if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &rec) == 0 | |
498 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
499 | font->baseline_offset = rec.u.integer; | |
500 | if (FT_Get_BDF_Property (ft_face, "_MULE_RELATIVE_COMPOSE", &rec) == 0 | |
501 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
502 | font->relative_compose = rec.u.integer; | |
503 | if (FT_Get_BDF_Property (ft_face, "_MULE_DEFAULT_ASCENT", &rec) == 0 | |
504 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
505 | font->default_ascent = rec.u.integer; | |
506 | } | |
507 | #endif | |
3528e709 KH |
508 | |
509 | return font_object; | |
c2f5bfd6 KH |
510 | } |
511 | ||
512 | static void | |
513 | xftfont_close (f, font) | |
514 | FRAME_PTR f; | |
515 | struct font *font; | |
516 | { | |
517 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
518 | ||
4613015e KH |
519 | #ifdef HAVE_LIBOTF |
520 | if (xftfont_info->otf) | |
521 | OTF_close (xftfont_info->otf); | |
522 | #endif | |
3528e709 | 523 | BLOCK_INPUT; |
0fce2b40 | 524 | XftUnlockFace (xftfont_info->xftfont); |
c2f5bfd6 | 525 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); |
3528e709 | 526 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
527 | } |
528 | ||
c2f5bfd6 KH |
529 | static int |
530 | xftfont_prepare_face (f, face) | |
531 | FRAME_PTR f; | |
532 | struct face *face; | |
533 | { | |
e2d0c925 | 534 | struct xftface_info *xftface_info; |
c2f5bfd6 | 535 | |
a703d27d KH |
536 | #if 0 |
537 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
538 | if (face != face->ascii_face) |
539 | { | |
540 | face->extra = face->ascii_face->extra; | |
541 | return 0; | |
542 | } | |
a703d27d | 543 | #endif |
e2d0c925 KH |
544 | |
545 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
546 | if (! xftface_info) |
547 | return -1; | |
c2f5bfd6 KH |
548 | xftfont_get_colors (f, face, face->gc, NULL, |
549 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
c2f5bfd6 KH |
550 | face->extra = xftface_info; |
551 | return 0; | |
552 | } | |
553 | ||
554 | static void | |
555 | xftfont_done_face (f, face) | |
556 | FRAME_PTR f; | |
557 | struct face *face; | |
558 | { | |
e2d0c925 | 559 | struct xftface_info *xftface_info; |
8510724d | 560 | |
a703d27d KH |
561 | #if 0 |
562 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
563 | if (face != face->ascii_face |
564 | || ! face->extra) | |
565 | return; | |
a703d27d | 566 | #endif |
c2f5bfd6 | 567 | |
e2d0c925 | 568 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
569 | if (xftface_info) |
570 | { | |
773039e8 | 571 | free (xftface_info); |
a92ee6bf | 572 | face->extra = NULL; |
773039e8 | 573 | } |
c2f5bfd6 KH |
574 | } |
575 | ||
b840b299 KH |
576 | extern Lisp_Object Qja, Qko; |
577 | ||
6570a1c4 KH |
578 | static int |
579 | xftfont_has_char (font, c) | |
580 | Lisp_Object font; | |
581 | int c; | |
582 | { | |
583 | struct xftfont_info *xftfont_info; | |
b840b299 | 584 | struct charset *cs = NULL; |
6570a1c4 | 585 | |
b840b299 KH |
586 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) |
587 | && charset_jisx0208 >= 0) | |
588 | cs = CHARSET_FROM_ID (charset_jisx0208); | |
589 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) | |
590 | && charset_ksc5601 >= 0) | |
591 | cs = CHARSET_FROM_ID (charset_ksc5601); | |
592 | if (cs) | |
593 | return (ENCODE_CHAR (cs, c) != CHARSET_INVALID_CODE (cs)); | |
594 | ||
ea12eb81 KH |
595 | if (FONT_ENTITY_P (font)) |
596 | return ftfont_driver.has_char (font, c); | |
6570a1c4 KH |
597 | xftfont_info = (struct xftfont_info *) XFONT_OBJECT (font); |
598 | return (XftCharExists (xftfont_info->display, xftfont_info->xftfont, | |
599 | (FcChar32) c) == FcTrue); | |
600 | } | |
601 | ||
c2f5bfd6 KH |
602 | static unsigned |
603 | xftfont_encode_char (font, c) | |
604 | struct font *font; | |
605 | int c; | |
606 | { | |
607 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
608 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
609 | (FcChar32) c); | |
8510724d | 610 | |
b5b2545a | 611 | return (code ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
612 | } |
613 | ||
614 | static int | |
615 | xftfont_text_extents (font, code, nglyphs, metrics) | |
616 | struct font *font; | |
617 | unsigned *code; | |
618 | int nglyphs; | |
619 | struct font_metrics *metrics; | |
620 | { | |
621 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
622 | XGlyphInfo extents; | |
623 | ||
624 | BLOCK_INPUT; | |
625 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
626 | &extents); | |
627 | UNBLOCK_INPUT; | |
628 | if (metrics) | |
629 | { | |
630 | metrics->lbearing = - extents.x; | |
631 | metrics->rbearing = - extents.x + extents.width; | |
632 | metrics->width = extents.xOff; | |
633 | metrics->ascent = extents.y; | |
4b848612 | 634 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
635 | } |
636 | return extents.xOff; | |
637 | } | |
638 | ||
a92ee6bf KH |
639 | static XftDraw * |
640 | xftfont_get_xft_draw (f) | |
641 | FRAME_PTR f; | |
642 | { | |
8510724d | 643 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); |
a92ee6bf KH |
644 | |
645 | if (! xft_draw) | |
646 | { | |
647 | BLOCK_INPUT; | |
648 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
649 | FRAME_X_WINDOW (f), | |
650 | FRAME_X_VISUAL (f), | |
651 | FRAME_X_COLORMAP (f)); | |
652 | UNBLOCK_INPUT; | |
653 | if (! xft_draw) | |
654 | abort (); | |
655 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
656 | } | |
657 | return xft_draw; | |
658 | } | |
659 | ||
c2f5bfd6 KH |
660 | static int |
661 | xftfont_draw (s, from, to, x, y, with_background) | |
662 | struct glyph_string *s; | |
663 | int from, to, x, y, with_background; | |
664 | { | |
665 | FRAME_PTR f = s->f; | |
666 | struct face *face = s->face; | |
3528e709 | 667 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font; |
c78c1659 | 668 | struct xftface_info *xftface_info = NULL; |
a92ee6bf | 669 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
670 | FT_UInt *code; |
671 | XftColor fg, bg; | |
c2f5bfd6 KH |
672 | int len = to - from; |
673 | int i; | |
674 | ||
3528e709 | 675 | if (s->font == face->font) |
a92ee6bf | 676 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 677 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 678 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 679 | BLOCK_INPUT; |
03d198e8 KH |
680 | if (s->num_clips > 0) |
681 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
682 | else | |
683 | XftDrawSetClip (xft_draw, NULL); | |
684 | ||
c2f5bfd6 | 685 | if (with_background) |
3528e709 KH |
686 | XftDrawRect (xft_draw, &bg, |
687 | x, y - face->font->ascent, s->width, face->font->height); | |
c2f5bfd6 KH |
688 | code = alloca (sizeof (FT_UInt) * len); |
689 | for (i = 0; i < len; i++) | |
690 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
691 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
692 | ||
785543da KH |
693 | if (s->padding_p) |
694 | for (i = 0; i < len; i++) | |
695 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
696 | x + i, y, code + i, 1); | |
697 | else | |
698 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
699 | x, y, code, len); | |
c2f5bfd6 KH |
700 | UNBLOCK_INPUT; |
701 | ||
702 | return len; | |
703 | } | |
704 | ||
a92ee6bf KH |
705 | static int |
706 | xftfont_end_for_frame (f) | |
707 | FRAME_PTR f; | |
708 | { | |
ece2d4ed JD |
709 | XftDraw *xft_draw; |
710 | ||
711 | /* Don't do anything if display is dead */ | |
712 | if (FRAME_X_DISPLAY (f) == NULL) return 0; | |
713 | ||
714 | xft_draw = font_get_frame_data (f, &xftfont_driver); | |
a92ee6bf KH |
715 | |
716 | if (xft_draw) | |
717 | { | |
718 | BLOCK_INPUT; | |
719 | XftDrawDestroy (xft_draw); | |
720 | UNBLOCK_INPUT; | |
721 | font_put_frame_data (f, &xftfont_driver, NULL); | |
722 | } | |
723 | return 0; | |
724 | } | |
c2f5bfd6 | 725 | |
d0cf45b7 JD |
726 | static int |
727 | xftfont_cached_font_ok (f, font_object, entity) | |
728 | struct frame *f; | |
729 | Lisp_Object font_object; | |
730 | Lisp_Object entity; | |
731 | ||
732 | { | |
733 | struct xftfont_info *info = (struct xftfont_info *) XFONT_OBJECT (font_object); | |
734 | FcPattern *oldpat = info->xftfont->pattern; | |
735 | Display *display = FRAME_X_DISPLAY (f); | |
736 | FcPattern *pat = FcPatternCreate (); | |
737 | FcBool b1, b2; | |
738 | int ok = 0, i1, i2, r1, r2; | |
739 | ||
740 | xftfont_add_rendering_parameters (pat, entity); | |
741 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); | |
742 | ||
743 | r1 = FcPatternGetBool (pat, FC_ANTIALIAS, 0, &b1); | |
744 | r2 = FcPatternGetBool (oldpat, FC_ANTIALIAS, 0, &b2); | |
745 | if (r1 != r2 || b1 != b2) goto out; | |
746 | r1 = FcPatternGetBool (pat, FC_HINTING, 0, &b1); | |
747 | r2 = FcPatternGetBool (oldpat, FC_HINTING, 0, &b2); | |
748 | if (r1 != r2 || b1 != b2) goto out; | |
749 | r1 = FcPatternGetBool (pat, FC_AUTOHINT, 0, &b1); | |
750 | r2 = FcPatternGetBool (oldpat, FC_AUTOHINT, 0, &b2); | |
751 | if (r1 != r2 || b1 != b2) goto out; | |
752 | #ifdef FC_EMBOLDEN | |
753 | r1 = FcPatternGetBool (pat, FC_EMBOLDEN, 0, &b1); | |
754 | r2 = FcPatternGetBool (oldpat, FC_EMBOLDEN, 0, &b2); | |
755 | if (r1 != r2 || b1 != b2) goto out; | |
756 | #endif | |
757 | r1 = FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &i1); | |
758 | r2 = FcPatternGetInteger (oldpat, FC_HINT_STYLE, 0, &i2); | |
759 | if (r1 != r2 || i1 != i2) goto out; | |
760 | r1 = FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &i1); | |
761 | r2 = FcPatternGetInteger (oldpat, FC_LCD_FILTER, 0, &i2); | |
762 | if (r1 != r2 || i1 != i2) goto out; | |
763 | r1 = FcPatternGetInteger (pat, FC_RGBA, 0, &i1); | |
764 | r2 = FcPatternGetInteger (oldpat, FC_RGBA, 0, &i2); | |
765 | if (r1 != r2 || i1 != i2) goto out; | |
766 | ||
767 | ok = 1; | |
768 | out: | |
769 | FcPatternDestroy (pat); | |
770 | return ok; | |
771 | } | |
772 | ||
c2f5bfd6 KH |
773 | void |
774 | syms_of_xftfont () | |
775 | { | |
776 | DEFSYM (Qxft, "xft"); | |
81094fab | 777 | DEFSYM (QChinting, ":hinting"); |
9743ac48 | 778 | DEFSYM (QCautohint, ":autohint"); |
81094fab KH |
779 | DEFSYM (QChintstyle, ":hintstyle"); |
780 | DEFSYM (QCrgba, ":rgba"); | |
781 | DEFSYM (QCembolden, ":embolden"); | |
223e5fc6 | 782 | DEFSYM (QClcdfilter, ":lcdfilter"); |
c2f5bfd6 KH |
783 | |
784 | xftfont_driver = ftfont_driver; | |
785 | xftfont_driver.type = Qxft; | |
786 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
787 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 788 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
789 | xftfont_driver.open = xftfont_open; |
790 | xftfont_driver.close = xftfont_close; | |
791 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
792 | xftfont_driver.done_face = xftfont_done_face; | |
6570a1c4 | 793 | xftfont_driver.has_char = xftfont_has_char; |
c2f5bfd6 KH |
794 | xftfont_driver.encode_char = xftfont_encode_char; |
795 | xftfont_driver.text_extents = xftfont_text_extents; | |
796 | xftfont_driver.draw = xftfont_draw; | |
a92ee6bf | 797 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
d0cf45b7 | 798 | xftfont_driver.cached_font_ok = xftfont_cached_font_ok; |
c2f5bfd6 KH |
799 | |
800 | register_font_driver (&xftfont_driver, NULL); | |
801 | } | |
885b7d09 MB |
802 | |
803 | /* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605 | |
804 | (do not change this comment) */ |