Commit | Line | Data |
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c2f5bfd6 | 1 | /* xftfont.c -- XFT font driver. |
acaf905b | 2 | Copyright (C) 2006-2012 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 | ||
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" | |
31daa5e1 | 35 | #include "composite.h" |
c2f5bfd6 KH |
36 | #include "fontset.h" |
37 | #include "font.h" | |
4613015e | 38 | #include "ftfont.h" |
c2f5bfd6 KH |
39 | |
40 | /* Xft font driver. */ | |
41 | ||
42 | static Lisp_Object Qxft; | |
223e5fc6 JD |
43 | static Lisp_Object QChinting, QCautohint, QChintstyle, QCrgba, QCembolden, |
44 | QClcdfilter; | |
c2f5bfd6 KH |
45 | |
46 | /* The actual structure for Xft font that can be casted to struct | |
47 | font. */ | |
48 | ||
49 | struct xftfont_info | |
50 | { | |
51 | struct font font; | |
91ce2415 | 52 | /* The following five members must be here in this order to be |
0fce2b40 | 53 | compatible with struct ftfont_info (in ftfont.c). */ |
4613015e KH |
54 | #ifdef HAVE_LIBOTF |
55 | int maybe_otf; /* Flag to tell if this may be OTF or not. */ | |
56 | OTF *otf; | |
794eba0f | 57 | #endif /* HAVE_LIBOTF */ |
0fce2b40 | 58 | FT_Size ft_size; |
b0c25608 | 59 | int index; |
91ce2415 | 60 | FT_Matrix matrix; |
0fce2b40 KH |
61 | Display *display; |
62 | int screen; | |
63 | XftFont *xftfont; | |
c2f5bfd6 KH |
64 | }; |
65 | ||
66 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 67 | |
c2f5bfd6 KH |
68 | struct xftface_info |
69 | { | |
10aca0f7 KH |
70 | XftColor xft_fg; /* color for face->foreground */ |
71 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
72 | }; |
73 | ||
f57e2426 J |
74 | static void xftfont_get_colors (FRAME_PTR, struct face *, GC gc, |
75 | struct xftface_info *, | |
76 | XftColor *fg, XftColor *bg); | |
c2f5bfd6 KH |
77 | |
78 | ||
10aca0f7 KH |
79 | /* Setup foreground and background colors of GC into FG and BG. If |
80 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
81 | may be NULL. */ | |
82 | ||
c2f5bfd6 | 83 | static void |
971de7fb | 84 | xftfont_get_colors (FRAME_PTR f, struct face *face, GC gc, struct xftface_info *xftface_info, XftColor *fg, XftColor *bg) |
c2f5bfd6 KH |
85 | { |
86 | if (xftface_info && face->gc == gc) | |
87 | { | |
88 | *fg = xftface_info->xft_fg; | |
89 | if (bg) | |
90 | *bg = xftface_info->xft_bg; | |
91 | } | |
92 | else | |
93 | { | |
94 | XGCValues xgcv; | |
95 | int fg_done = 0, bg_done = 0; | |
96 | ||
97 | BLOCK_INPUT; | |
98 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
99 | GCForeground | GCBackground, &xgcv); | |
100 | if (xftface_info) | |
101 | { | |
102 | if (xgcv.foreground == face->foreground) | |
103 | *fg = xftface_info->xft_fg, fg_done = 1; | |
104 | else if (xgcv.foreground == face->background) | |
105 | *fg = xftface_info->xft_bg, fg_done = 1; | |
106 | if (! bg) | |
107 | bg_done = 1; | |
108 | else if (xgcv.background == face->background) | |
109 | *bg = xftface_info->xft_bg, bg_done = 1; | |
110 | else if (xgcv.background == face->foreground) | |
111 | *bg = xftface_info->xft_fg, bg_done = 1; | |
112 | } | |
113 | ||
114 | if (fg_done + bg_done < 2) | |
115 | { | |
116 | XColor colors[2]; | |
117 | ||
118 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
119 | if (bg) | |
120 | colors[1].pixel = bg->pixel = xgcv.background; | |
121 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
122 | bg ? 2 : 1); | |
123 | fg->color.alpha = 0xFFFF; | |
124 | fg->color.red = colors[0].red; | |
125 | fg->color.green = colors[0].green; | |
126 | fg->color.blue = colors[0].blue; | |
127 | if (bg) | |
128 | { | |
129 | bg->color.alpha = 0xFFFF; | |
130 | bg->color.red = colors[1].red; | |
131 | bg->color.green = colors[1].green; | |
132 | bg->color.blue = colors[1].blue; | |
133 | } | |
134 | } | |
135 | UNBLOCK_INPUT; | |
136 | } | |
137 | } | |
138 | ||
c2f5bfd6 | 139 | |
f57e2426 J |
140 | static Lisp_Object xftfont_list (Lisp_Object, Lisp_Object); |
141 | static Lisp_Object xftfont_match (Lisp_Object, Lisp_Object); | |
142 | static Lisp_Object xftfont_open (FRAME_PTR, Lisp_Object, int); | |
143 | static void xftfont_close (FRAME_PTR, struct font *); | |
144 | static int xftfont_prepare_face (FRAME_PTR, struct face *); | |
145 | static void xftfont_done_face (FRAME_PTR, struct face *); | |
146 | static int xftfont_has_char (Lisp_Object, int); | |
147 | static unsigned xftfont_encode_char (struct font *, int); | |
148 | static int xftfont_text_extents (struct font *, unsigned *, int, | |
149 | struct font_metrics *); | |
150 | static int xftfont_draw (struct glyph_string *, int, int, int, int, int); | |
151 | static int xftfont_end_for_frame (FRAME_PTR f); | |
c2f5bfd6 KH |
152 | |
153 | struct font_driver xftfont_driver; | |
154 | ||
155 | static Lisp_Object | |
971de7fb | 156 | xftfont_list (Lisp_Object frame, Lisp_Object spec) |
c2f5bfd6 | 157 | { |
3528e709 | 158 | Lisp_Object list = ftfont_driver.list (frame, spec), tail; |
8510724d | 159 | |
3528e709 KH |
160 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
161 | ASET (XCAR (tail), FONT_TYPE_INDEX, Qxft); | |
162 | return list; | |
c2f5bfd6 KH |
163 | } |
164 | ||
10aca0f7 | 165 | static Lisp_Object |
971de7fb | 166 | xftfont_match (Lisp_Object frame, Lisp_Object spec) |
10aca0f7 KH |
167 | { |
168 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
169 | ||
3528e709 | 170 | if (! NILP (entity)) |
10aca0f7 KH |
171 | ASET (entity, FONT_TYPE_INDEX, Qxft); |
172 | return entity; | |
173 | } | |
174 | ||
c2f5bfd6 KH |
175 | static FcChar8 ascii_printable[95]; |
176 | ||
637fa988 | 177 | static void |
971de7fb | 178 | xftfont_fix_match (FcPattern *pat, FcPattern *match) |
637fa988 JD |
179 | { |
180 | /* These values are not used for matching (except antialias), but for | |
181 | rendering, so make sure they are carried over to the match. | |
182 | We also put antialias here because most fonts are antialiased, so | |
183 | the match will have antialias true. */ | |
184 | ||
185 | FcBool b = FcTrue; | |
186 | int i; | |
187 | double dpi; | |
188 | ||
189 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &b); | |
af59aa6e | 190 | if (! b) |
637fa988 JD |
191 | { |
192 | FcPatternDel (match, FC_ANTIALIAS); | |
193 | FcPatternAddBool (match, FC_ANTIALIAS, FcFalse); | |
194 | } | |
195 | FcPatternGetBool (pat, FC_HINTING, 0, &b); | |
af59aa6e | 196 | if (! b) |
637fa988 JD |
197 | { |
198 | FcPatternDel (match, FC_HINTING); | |
199 | FcPatternAddBool (match, FC_HINTING, FcFalse); | |
200 | } | |
af59aa6e PE |
201 | #ifndef FC_HINT_STYLE |
202 | # define FC_HINT_STYLE "hintstyle" | |
203 | #endif | |
637fa988 JD |
204 | if (FcResultMatch == FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &i)) |
205 | { | |
206 | FcPatternDel (match, FC_HINT_STYLE); | |
207 | FcPatternAddInteger (match, FC_HINT_STYLE, i); | |
208 | } | |
21050de1 | 209 | #ifndef FC_LCD_FILTER |
a6eb20d8 | 210 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
21050de1 JD |
211 | #define FC_LCD_FILTER "lcdfilter" |
212 | #endif | |
637fa988 JD |
213 | if (FcResultMatch == FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &i)) |
214 | { | |
215 | FcPatternDel (match, FC_LCD_FILTER); | |
216 | FcPatternAddInteger (match, FC_LCD_FILTER, i); | |
217 | } | |
218 | if (FcResultMatch == FcPatternGetInteger (pat, FC_RGBA, 0, &i)) | |
219 | { | |
220 | FcPatternDel (match, FC_RGBA); | |
221 | FcPatternAddInteger (match, FC_RGBA, i); | |
222 | } | |
223 | if (FcResultMatch == FcPatternGetDouble (pat, FC_DPI, 0, &dpi)) | |
224 | { | |
225 | FcPatternDel (match, FC_DPI); | |
226 | FcPatternAddDouble (match, FC_DPI, dpi); | |
227 | } | |
228 | } | |
229 | ||
d0cf45b7 | 230 | static void |
971de7fb | 231 | xftfont_add_rendering_parameters (FcPattern *pat, Lisp_Object entity) |
d0cf45b7 JD |
232 | { |
233 | Lisp_Object tail; | |
234 | int ival; | |
235 | ||
236 | for (tail = AREF (entity, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) | |
237 | { | |
238 | Lisp_Object key = XCAR (XCAR (tail)); | |
239 | Lisp_Object val = XCDR (XCAR (tail)); | |
240 | ||
241 | if (EQ (key, QCantialias)) | |
242 | FcPatternAddBool (pat, FC_ANTIALIAS, NILP (val) ? FcFalse : FcTrue); | |
243 | else if (EQ (key, QChinting)) | |
244 | FcPatternAddBool (pat, FC_HINTING, NILP (val) ? FcFalse : FcTrue); | |
245 | else if (EQ (key, QCautohint)) | |
246 | FcPatternAddBool (pat, FC_AUTOHINT, NILP (val) ? FcFalse : FcTrue); | |
247 | else if (EQ (key, QChintstyle)) | |
248 | { | |
249 | if (INTEGERP (val)) | |
250 | FcPatternAddInteger (pat, FC_HINT_STYLE, XINT (val)); | |
251 | else if (SYMBOLP (val) | |
252 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
253 | FcPatternAddInteger (pat, FC_HINT_STYLE, ival); | |
254 | } | |
255 | else if (EQ (key, QCrgba)) | |
256 | { | |
257 | if (INTEGERP (val)) | |
258 | FcPatternAddInteger (pat, FC_RGBA, XINT (val)); | |
259 | else if (SYMBOLP (val) | |
260 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
261 | FcPatternAddInteger (pat, FC_RGBA, ival); | |
262 | } | |
263 | else if (EQ (key, QClcdfilter)) | |
264 | { | |
265 | if (INTEGERP (val)) | |
266 | FcPatternAddInteger (pat, FC_LCD_FILTER, ival = XINT (val)); | |
267 | else if (SYMBOLP (val) | |
268 | && FcNameConstant (SDATA (SYMBOL_NAME (val)), &ival)) | |
269 | FcPatternAddInteger (pat, FC_LCD_FILTER, ival); | |
270 | } | |
271 | #ifdef FC_EMBOLDEN | |
272 | else if (EQ (key, QCembolden)) | |
273 | FcPatternAddBool (pat, FC_EMBOLDEN, NILP (val) ? FcFalse : FcTrue); | |
274 | #endif | |
275 | } | |
276 | } | |
277 | ||
3528e709 | 278 | static Lisp_Object |
971de7fb | 279 | xftfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 | 280 | { |
81094fab | 281 | FcResult result; |
c2f5bfd6 | 282 | Display *display = FRAME_X_DISPLAY (f); |
001a7ab4 | 283 | Lisp_Object val, filename, idx, font_object; |
81094fab | 284 | FcPattern *pat = NULL, *match; |
2d93c6bd | 285 | struct xftfont_info *xftfont_info = NULL; |
c2f5bfd6 KH |
286 | struct font *font; |
287 | double size = 0; | |
2d93c6bd | 288 | XftFont *xftfont = NULL; |
c2f5bfd6 | 289 | int spacing; |
3528e709 | 290 | char name[256]; |
d0cf45b7 | 291 | int len, i; |
91c5bb27 | 292 | XGlyphInfo extents; |
365131ac | 293 | FT_Face ft_face; |
91ce2415 | 294 | FcMatrix *matrix; |
c2f5bfd6 | 295 | |
3528e709 | 296 | val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); |
686ee703 | 297 | if (! CONSP (val)) |
3528e709 | 298 | return Qnil; |
686ee703 KH |
299 | val = XCDR (val); |
300 | filename = XCAR (val); | |
001a7ab4 | 301 | idx = XCDR (val); |
c2f5bfd6 KH |
302 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
303 | if (size == 0) | |
304 | size = pixel_size; | |
305 | pat = FcPatternCreate (); | |
81094fab KH |
306 | FcPatternAddInteger (pat, FC_WEIGHT, FONT_WEIGHT_NUMERIC (entity)); |
307 | i = FONT_SLANT_NUMERIC (entity) - 100; | |
308 | if (i < 0) i = 0; | |
309 | FcPatternAddInteger (pat, FC_SLANT, i); | |
310 | FcPatternAddInteger (pat, FC_WIDTH, FONT_WIDTH_NUMERIC (entity)); | |
c2f5bfd6 | 311 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); |
3cc2aca0 KH |
312 | val = AREF (entity, FONT_FAMILY_INDEX); |
313 | if (! NILP (val)) | |
314 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
dc2226d0 KH |
315 | val = AREF (entity, FONT_FOUNDRY_INDEX); |
316 | if (! NILP (val)) | |
317 | FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
318 | val = AREF (entity, FONT_SPACING_INDEX); | |
319 | if (! NILP (val)) | |
320 | FcPatternAddInteger (pat, FC_SPACING, XINT (val)); | |
321 | val = AREF (entity, FONT_DPI_INDEX); | |
322 | if (! NILP (val)) | |
323 | { | |
324 | double dbl = XINT (val); | |
325 | ||
326 | FcPatternAddDouble (pat, FC_DPI, dbl); | |
327 | } | |
328 | val = AREF (entity, FONT_AVGWIDTH_INDEX); | |
329 | if (INTEGERP (val) && XINT (val) == 0) | |
330 | FcPatternAddBool (pat, FC_SCALABLE, FcTrue); | |
0fce2b40 KH |
331 | /* This is necessary to identify the exact font (e.g. 10x20.pcf.gz |
332 | over 10x20-ISO8859-1.pcf.gz). */ | |
333 | FcPatternAddCharSet (pat, FC_CHARSET, ftfont_get_fc_charset (entity)); | |
dc2226d0 | 334 | |
d0cf45b7 | 335 | xftfont_add_rendering_parameters (pat, entity); |
dcce3c58 | 336 | |
0fce2b40 | 337 | FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename)); |
001a7ab4 | 338 | FcPatternAddInteger (pat, FC_INDEX, XINT (idx)); |
8510724d | 339 | |
0fce2b40 | 340 | |
dcce3c58 | 341 | BLOCK_INPUT; |
9cb363db YM |
342 | /* Make sure that the Xrender extension is added before the Xft one. |
343 | Otherwise, the close-display hook set by Xft is called after the | |
344 | one for Xrender, and the former tries to re-add the latter. This | |
345 | results in inconsistency of internal states and leads to X | |
346 | protocol error when one reconnects to the same X server. | |
347 | (Bug#1696) */ | |
348 | { | |
349 | int event_base, error_base; | |
350 | XRenderQueryExtension (display, &event_base, &error_base); | |
351 | } | |
637fa988 JD |
352 | |
353 | /* Substitute in values from X resources and XftDefaultSet. */ | |
354 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); | |
81094fab | 355 | match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result); |
637fa988 | 356 | xftfont_fix_match (pat, match); |
223e5fc6 | 357 | |
81094fab KH |
358 | FcPatternDestroy (pat); |
359 | xftfont = XftFontOpenPattern (display, match); | |
99061dfc | 360 | if (!xftfont) |
5c629bf6 | 361 | { |
99061dfc | 362 | UNBLOCK_INPUT; |
5c629bf6 CY |
363 | XftPatternDestroy (match); |
364 | return Qnil; | |
365 | } | |
99061dfc CY |
366 | ft_face = XftLockFace (xftfont); |
367 | UNBLOCK_INPUT; | |
368 | ||
c2f5bfd6 KH |
369 | /* We should not destroy PAT here because it is kept in XFTFONT and |
370 | destroyed automatically when XFTFONT is closed. */ | |
0fce2b40 | 371 | font_object = font_make_object (VECSIZE (struct xftfont_info), entity, size); |
3528e709 | 372 | ASET (font_object, FONT_TYPE_INDEX, Qxft); |
3528e709 KH |
373 | len = font_unparse_xlfd (entity, size, name, 256); |
374 | if (len > 0) | |
2781b4e0 | 375 | ASET (font_object, FONT_NAME_INDEX, make_string (name, len)); |
3528e709 KH |
376 | len = font_unparse_fcname (entity, size, name, 256); |
377 | if (len > 0) | |
2781b4e0 | 378 | ASET (font_object, FONT_FULLNAME_INDEX, make_string (name, len)); |
3528e709 KH |
379 | else |
380 | ASET (font_object, FONT_FULLNAME_INDEX, | |
381 | AREF (font_object, FONT_NAME_INDEX)); | |
686ee703 KH |
382 | ASET (font_object, FONT_FILE_INDEX, filename); |
383 | ASET (font_object, FONT_FORMAT_INDEX, | |
1cf6763f | 384 | ftfont_font_format (xftfont->pattern, filename)); |
3528e709 KH |
385 | font = XFONT_OBJECT (font_object); |
386 | font->pixel_size = pixel_size; | |
387 | font->driver = &xftfont_driver; | |
388 | font->encoding_charset = font->repertory_charset = -1; | |
389 | ||
390 | xftfont_info = (struct xftfont_info *) font; | |
c2f5bfd6 KH |
391 | xftfont_info->display = display; |
392 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
393 | xftfont_info->xftfont = xftfont; | |
91ce2415 KH |
394 | /* This means that there's no need of transformation. */ |
395 | xftfont_info->matrix.xx = 0; | |
396 | if (FcPatternGetMatrix (xftfont->pattern, FC_MATRIX, 0, &matrix) | |
397 | == FcResultMatch) | |
398 | { | |
399 | xftfont_info->matrix.xx = 0x10000L * matrix->xx; | |
400 | xftfont_info->matrix.yy = 0x10000L * matrix->yy; | |
401 | xftfont_info->matrix.xy = 0x10000L * matrix->xy; | |
402 | xftfont_info->matrix.yx = 0x10000L * matrix->yx; | |
403 | } | |
c2f5bfd6 KH |
404 | font->pixel_size = size; |
405 | font->driver = &xftfont_driver; | |
686ee703 KH |
406 | if (INTEGERP (AREF (entity, FONT_SPACING_INDEX))) |
407 | spacing = XINT (AREF (entity, FONT_SPACING_INDEX)); | |
408 | else | |
c2f5bfd6 | 409 | spacing = FC_PROPORTIONAL; |
91c5bb27 KH |
410 | if (! ascii_printable[0]) |
411 | { | |
001a7ab4 PE |
412 | int ch; |
413 | for (ch = 0; ch < 95; ch++) | |
414 | ascii_printable[ch] = ' ' + ch; | |
91c5bb27 | 415 | } |
3528e709 | 416 | BLOCK_INPUT; |
032a42c8 CY |
417 | |
418 | /* Unfortunately Xft doesn't provide a way to get minimum char | |
419 | width. So, we set min_width to space_width. */ | |
420 | ||
ea2460a0 KH |
421 | if (spacing != FC_PROPORTIONAL |
422 | #ifdef FC_DUAL | |
423 | && spacing != FC_DUAL | |
424 | #endif /* FC_DUAL */ | |
425 | ) | |
91c5bb27 | 426 | { |
032a42c8 CY |
427 | font->min_width = font->max_width = font->average_width |
428 | = font->space_width = xftfont->max_advance_width; | |
91c5bb27 KH |
429 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
430 | } | |
c2f5bfd6 KH |
431 | else |
432 | { | |
c2f5bfd6 | 433 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
032a42c8 CY |
434 | font->min_width = font->max_width = font->space_width |
435 | = extents.xOff; | |
3528e709 | 436 | if (font->space_width <= 0) |
c2f5bfd6 | 437 | /* dirty workaround */ |
8510724d | 438 | font->space_width = pixel_size; |
c2f5bfd6 | 439 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
3528e709 | 440 | font->average_width = (font->space_width + extents.xOff) / 95; |
c2f5bfd6 | 441 | } |
dcce3c58 | 442 | UNBLOCK_INPUT; |
c2f5bfd6 | 443 | |
91c5bb27 | 444 | font->ascent = xftfont->ascent; |
91c5bb27 | 445 | font->descent = xftfont->descent; |
81094fab KH |
446 | if (pixel_size >= 5) |
447 | { | |
448 | /* The above condition is a dirty workaround because | |
449 | XftTextExtents8 behaves strangely for some fonts | |
450 | (e.g. "Dejavu Sans Mono") when pixel_size is less than 5. */ | |
451 | if (font->ascent < extents.y) | |
452 | font->ascent = extents.y; | |
453 | if (font->descent < extents.height - extents.y) | |
454 | font->descent = extents.height - extents.y; | |
455 | } | |
3528e709 | 456 | font->height = font->ascent + font->descent; |
91c5bb27 | 457 | |
3528e709 | 458 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) |
c2f5bfd6 | 459 | { |
3528e709 KH |
460 | int upEM = ft_face->units_per_EM; |
461 | ||
462 | font->underline_position = -ft_face->underline_position * size / upEM; | |
bc981e4e | 463 | font->underline_thickness = ft_face->underline_thickness * size / upEM; |
951b8112 KH |
464 | if (font->underline_thickness > 2) |
465 | font->underline_position -= font->underline_thickness / 2; | |
c2f5bfd6 KH |
466 | } |
467 | else | |
468 | { | |
3528e709 KH |
469 | font->underline_position = -1; |
470 | font->underline_thickness = 0; | |
c2f5bfd6 | 471 | } |
3528e709 KH |
472 | #ifdef HAVE_LIBOTF |
473 | xftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
474 | xftfont_info->otf = NULL; | |
475 | #endif /* HAVE_LIBOTF */ | |
0fce2b40 | 476 | xftfont_info->ft_size = ft_face->size; |
c2f5bfd6 | 477 | |
3528e709 KH |
478 | font->baseline_offset = 0; |
479 | font->relative_compose = 0; | |
480 | font->default_ascent = 0; | |
481 | font->vertical_centering = 0; | |
0fce2b40 KH |
482 | #ifdef FT_BDF_H |
483 | if (! (ft_face->face_flags & FT_FACE_FLAG_SFNT)) | |
484 | { | |
485 | BDF_PropertyRec rec; | |
486 | ||
487 | if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &rec) == 0 | |
488 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
489 | font->baseline_offset = rec.u.integer; | |
490 | if (FT_Get_BDF_Property (ft_face, "_MULE_RELATIVE_COMPOSE", &rec) == 0 | |
491 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
492 | font->relative_compose = rec.u.integer; | |
493 | if (FT_Get_BDF_Property (ft_face, "_MULE_DEFAULT_ASCENT", &rec) == 0 | |
494 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
495 | font->default_ascent = rec.u.integer; | |
496 | } | |
497 | #endif | |
3528e709 KH |
498 | |
499 | return font_object; | |
c2f5bfd6 KH |
500 | } |
501 | ||
502 | static void | |
971de7fb | 503 | xftfont_close (FRAME_PTR f, struct font *font) |
c2f5bfd6 KH |
504 | { |
505 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
506 | ||
4613015e KH |
507 | #ifdef HAVE_LIBOTF |
508 | if (xftfont_info->otf) | |
509 | OTF_close (xftfont_info->otf); | |
510 | #endif | |
3528e709 | 511 | BLOCK_INPUT; |
0fce2b40 | 512 | XftUnlockFace (xftfont_info->xftfont); |
c2f5bfd6 | 513 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); |
3528e709 | 514 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
515 | } |
516 | ||
c2f5bfd6 | 517 | static int |
971de7fb | 518 | xftfont_prepare_face (FRAME_PTR f, struct face *face) |
c2f5bfd6 | 519 | { |
e2d0c925 | 520 | struct xftface_info *xftface_info; |
c2f5bfd6 | 521 | |
a703d27d KH |
522 | #if 0 |
523 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
524 | if (face != face->ascii_face) |
525 | { | |
526 | face->extra = face->ascii_face->extra; | |
527 | return 0; | |
528 | } | |
a703d27d | 529 | #endif |
e2d0c925 | 530 | |
38182d90 | 531 | xftface_info = malloc (sizeof *xftface_info); |
c2f5bfd6 KH |
532 | if (! xftface_info) |
533 | return -1; | |
c2f5bfd6 KH |
534 | xftfont_get_colors (f, face, face->gc, NULL, |
535 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
c2f5bfd6 KH |
536 | face->extra = xftface_info; |
537 | return 0; | |
538 | } | |
539 | ||
540 | static void | |
971de7fb | 541 | xftfont_done_face (FRAME_PTR f, struct face *face) |
c2f5bfd6 | 542 | { |
e2d0c925 | 543 | struct xftface_info *xftface_info; |
8510724d | 544 | |
a703d27d KH |
545 | #if 0 |
546 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
547 | if (face != face->ascii_face |
548 | || ! face->extra) | |
549 | return; | |
a703d27d | 550 | #endif |
c2f5bfd6 | 551 | |
e2d0c925 | 552 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
553 | if (xftface_info) |
554 | { | |
773039e8 | 555 | free (xftface_info); |
a92ee6bf | 556 | face->extra = NULL; |
773039e8 | 557 | } |
c2f5bfd6 KH |
558 | } |
559 | ||
6570a1c4 | 560 | static int |
971de7fb | 561 | xftfont_has_char (Lisp_Object font, int c) |
6570a1c4 KH |
562 | { |
563 | struct xftfont_info *xftfont_info; | |
b840b299 | 564 | struct charset *cs = NULL; |
6570a1c4 | 565 | |
b840b299 KH |
566 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) |
567 | && charset_jisx0208 >= 0) | |
568 | cs = CHARSET_FROM_ID (charset_jisx0208); | |
569 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) | |
570 | && charset_ksc5601 >= 0) | |
571 | cs = CHARSET_FROM_ID (charset_ksc5601); | |
572 | if (cs) | |
573 | return (ENCODE_CHAR (cs, c) != CHARSET_INVALID_CODE (cs)); | |
574 | ||
ea12eb81 KH |
575 | if (FONT_ENTITY_P (font)) |
576 | return ftfont_driver.has_char (font, c); | |
6570a1c4 KH |
577 | xftfont_info = (struct xftfont_info *) XFONT_OBJECT (font); |
578 | return (XftCharExists (xftfont_info->display, xftfont_info->xftfont, | |
579 | (FcChar32) c) == FcTrue); | |
580 | } | |
581 | ||
c2f5bfd6 | 582 | static unsigned |
971de7fb | 583 | xftfont_encode_char (struct font *font, int c) |
c2f5bfd6 KH |
584 | { |
585 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
586 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
587 | (FcChar32) c); | |
8510724d | 588 | |
b5b2545a | 589 | return (code ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
590 | } |
591 | ||
592 | static int | |
971de7fb | 593 | xftfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 KH |
594 | { |
595 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
596 | XGlyphInfo extents; | |
597 | ||
598 | BLOCK_INPUT; | |
599 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
600 | &extents); | |
601 | UNBLOCK_INPUT; | |
602 | if (metrics) | |
603 | { | |
604 | metrics->lbearing = - extents.x; | |
605 | metrics->rbearing = - extents.x + extents.width; | |
606 | metrics->width = extents.xOff; | |
607 | metrics->ascent = extents.y; | |
4b848612 | 608 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
609 | } |
610 | return extents.xOff; | |
611 | } | |
612 | ||
a92ee6bf | 613 | static XftDraw * |
971de7fb | 614 | xftfont_get_xft_draw (FRAME_PTR f) |
a92ee6bf | 615 | { |
8510724d | 616 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); |
a92ee6bf KH |
617 | |
618 | if (! xft_draw) | |
619 | { | |
620 | BLOCK_INPUT; | |
621 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
622 | FRAME_X_WINDOW (f), | |
623 | FRAME_X_VISUAL (f), | |
624 | FRAME_X_COLORMAP (f)); | |
625 | UNBLOCK_INPUT; | |
4e6a86c6 | 626 | eassert (xft_draw != NULL); |
a92ee6bf KH |
627 | font_put_frame_data (f, &xftfont_driver, xft_draw); |
628 | } | |
629 | return xft_draw; | |
630 | } | |
631 | ||
c2f5bfd6 | 632 | static int |
971de7fb | 633 | xftfont_draw (struct glyph_string *s, int from, int to, int x, int y, int with_background) |
c2f5bfd6 KH |
634 | { |
635 | FRAME_PTR f = s->f; | |
636 | struct face *face = s->face; | |
3528e709 | 637 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font; |
c78c1659 | 638 | struct xftface_info *xftface_info = NULL; |
a92ee6bf | 639 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
640 | FT_UInt *code; |
641 | XftColor fg, bg; | |
c2f5bfd6 KH |
642 | int len = to - from; |
643 | int i; | |
644 | ||
3528e709 | 645 | if (s->font == face->font) |
a92ee6bf | 646 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 647 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 648 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 649 | BLOCK_INPUT; |
03d198e8 KH |
650 | if (s->num_clips > 0) |
651 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
652 | else | |
653 | XftDrawSetClip (xft_draw, NULL); | |
654 | ||
c2f5bfd6 | 655 | if (with_background) |
3528e709 | 656 | XftDrawRect (xft_draw, &bg, |
100d5755 | 657 | x, y - s->font->ascent, s->width, s->font->height); |
c2f5bfd6 KH |
658 | code = alloca (sizeof (FT_UInt) * len); |
659 | for (i = 0; i < len; i++) | |
660 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
661 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
662 | ||
785543da KH |
663 | if (s->padding_p) |
664 | for (i = 0; i < len; i++) | |
665 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
666 | x + i, y, code + i, 1); | |
667 | else | |
668 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
669 | x, y, code, len); | |
c2f5bfd6 KH |
670 | UNBLOCK_INPUT; |
671 | ||
672 | return len; | |
673 | } | |
674 | ||
0248044d PE |
675 | #if defined HAVE_M17N_FLT && defined HAVE_LIBOTF |
676 | static Lisp_Object | |
31daa5e1 KH |
677 | xftfont_shape (Lisp_Object lgstring) |
678 | { | |
679 | struct font *font; | |
680 | struct xftfont_info *xftfont_info; | |
681 | FT_Face ft_face; | |
682 | Lisp_Object val; | |
683 | ||
684 | CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font); | |
685 | xftfont_info = (struct xftfont_info *) font; | |
686 | ft_face = XftLockFace (xftfont_info->xftfont); | |
687 | xftfont_info->ft_size = ft_face->size; | |
688 | val = ftfont_driver.shape (lgstring); | |
689 | XftUnlockFace (xftfont_info->xftfont); | |
690 | return val; | |
691 | } | |
0248044d | 692 | #endif |
31daa5e1 | 693 | |
a92ee6bf | 694 | static int |
971de7fb | 695 | xftfont_end_for_frame (FRAME_PTR f) |
a92ee6bf | 696 | { |
ece2d4ed JD |
697 | XftDraw *xft_draw; |
698 | ||
699 | /* Don't do anything if display is dead */ | |
700 | if (FRAME_X_DISPLAY (f) == NULL) return 0; | |
701 | ||
702 | xft_draw = font_get_frame_data (f, &xftfont_driver); | |
a92ee6bf KH |
703 | |
704 | if (xft_draw) | |
705 | { | |
706 | BLOCK_INPUT; | |
707 | XftDrawDestroy (xft_draw); | |
708 | UNBLOCK_INPUT; | |
709 | font_put_frame_data (f, &xftfont_driver, NULL); | |
710 | } | |
711 | return 0; | |
712 | } | |
c2f5bfd6 | 713 | |
d0cf45b7 | 714 | static int |
971de7fb | 715 | xftfont_cached_font_ok (struct frame *f, Lisp_Object font_object, Lisp_Object entity) |
d0cf45b7 JD |
716 | { |
717 | struct xftfont_info *info = (struct xftfont_info *) XFONT_OBJECT (font_object); | |
718 | FcPattern *oldpat = info->xftfont->pattern; | |
719 | Display *display = FRAME_X_DISPLAY (f); | |
720 | FcPattern *pat = FcPatternCreate (); | |
721 | FcBool b1, b2; | |
722 | int ok = 0, i1, i2, r1, r2; | |
723 | ||
724 | xftfont_add_rendering_parameters (pat, entity); | |
725 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); | |
726 | ||
727 | r1 = FcPatternGetBool (pat, FC_ANTIALIAS, 0, &b1); | |
728 | r2 = FcPatternGetBool (oldpat, FC_ANTIALIAS, 0, &b2); | |
729 | if (r1 != r2 || b1 != b2) goto out; | |
730 | r1 = FcPatternGetBool (pat, FC_HINTING, 0, &b1); | |
731 | r2 = FcPatternGetBool (oldpat, FC_HINTING, 0, &b2); | |
732 | if (r1 != r2 || b1 != b2) goto out; | |
733 | r1 = FcPatternGetBool (pat, FC_AUTOHINT, 0, &b1); | |
734 | r2 = FcPatternGetBool (oldpat, FC_AUTOHINT, 0, &b2); | |
735 | if (r1 != r2 || b1 != b2) goto out; | |
736 | #ifdef FC_EMBOLDEN | |
737 | r1 = FcPatternGetBool (pat, FC_EMBOLDEN, 0, &b1); | |
738 | r2 = FcPatternGetBool (oldpat, FC_EMBOLDEN, 0, &b2); | |
739 | if (r1 != r2 || b1 != b2) goto out; | |
740 | #endif | |
741 | r1 = FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &i1); | |
742 | r2 = FcPatternGetInteger (oldpat, FC_HINT_STYLE, 0, &i2); | |
743 | if (r1 != r2 || i1 != i2) goto out; | |
744 | r1 = FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &i1); | |
745 | r2 = FcPatternGetInteger (oldpat, FC_LCD_FILTER, 0, &i2); | |
746 | if (r1 != r2 || i1 != i2) goto out; | |
747 | r1 = FcPatternGetInteger (pat, FC_RGBA, 0, &i1); | |
748 | r2 = FcPatternGetInteger (oldpat, FC_RGBA, 0, &i2); | |
749 | if (r1 != r2 || i1 != i2) goto out; | |
750 | ||
751 | ok = 1; | |
752 | out: | |
753 | FcPatternDestroy (pat); | |
754 | return ok; | |
755 | } | |
756 | ||
c2f5bfd6 | 757 | void |
971de7fb | 758 | syms_of_xftfont (void) |
c2f5bfd6 KH |
759 | { |
760 | DEFSYM (Qxft, "xft"); | |
81094fab | 761 | DEFSYM (QChinting, ":hinting"); |
9743ac48 | 762 | DEFSYM (QCautohint, ":autohint"); |
81094fab KH |
763 | DEFSYM (QChintstyle, ":hintstyle"); |
764 | DEFSYM (QCrgba, ":rgba"); | |
765 | DEFSYM (QCembolden, ":embolden"); | |
223e5fc6 | 766 | DEFSYM (QClcdfilter, ":lcdfilter"); |
c2f5bfd6 | 767 | |
032a42c8 CY |
768 | ascii_printable[0] = 0; |
769 | ||
c2f5bfd6 KH |
770 | xftfont_driver = ftfont_driver; |
771 | xftfont_driver.type = Qxft; | |
772 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
773 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 774 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
775 | xftfont_driver.open = xftfont_open; |
776 | xftfont_driver.close = xftfont_close; | |
777 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
778 | xftfont_driver.done_face = xftfont_done_face; | |
6570a1c4 | 779 | xftfont_driver.has_char = xftfont_has_char; |
c2f5bfd6 KH |
780 | xftfont_driver.encode_char = xftfont_encode_char; |
781 | xftfont_driver.text_extents = xftfont_text_extents; | |
782 | xftfont_driver.draw = xftfont_draw; | |
a92ee6bf | 783 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
d0cf45b7 | 784 | xftfont_driver.cached_font_ok = xftfont_cached_font_ok; |
31daa5e1 KH |
785 | #if defined (HAVE_M17N_FLT) && defined (HAVE_LIBOTF) |
786 | xftfont_driver.shape = xftfont_shape; | |
787 | #endif | |
c2f5bfd6 KH |
788 | |
789 | register_font_driver (&xftfont_driver, NULL); | |
790 | } |