Commit | Line | Data |
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c2f5bfd6 | 1 | /* xftfont.c -- XFT font driver. |
76b6f707 GM |
2 | Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008, 2009 | |
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; | |
81094fab | 42 | static Lisp_Object QChinting , QCautohint, QChintstyle, QCrgba, QCembolden; |
c2f5bfd6 KH |
43 | |
44 | /* The actual structure for Xft font that can be casted to struct | |
45 | font. */ | |
46 | ||
47 | struct xftfont_info | |
48 | { | |
49 | struct font font; | |
b0c25608 | 50 | /* The following four members must be here in this order to be |
0fce2b40 | 51 | compatible with struct ftfont_info (in ftfont.c). */ |
4613015e KH |
52 | #ifdef HAVE_LIBOTF |
53 | int maybe_otf; /* Flag to tell if this may be OTF or not. */ | |
54 | OTF *otf; | |
794eba0f | 55 | #endif /* HAVE_LIBOTF */ |
0fce2b40 | 56 | FT_Size ft_size; |
b0c25608 | 57 | int index; |
0fce2b40 KH |
58 | Display *display; |
59 | int screen; | |
60 | XftFont *xftfont; | |
c2f5bfd6 KH |
61 | }; |
62 | ||
63 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 64 | |
c2f5bfd6 KH |
65 | struct xftface_info |
66 | { | |
10aca0f7 KH |
67 | XftColor xft_fg; /* color for face->foreground */ |
68 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
69 | }; |
70 | ||
71 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
72 | struct xftface_info *, | |
73 | XftColor *fg, XftColor *bg)); | |
c2f5bfd6 KH |
74 | |
75 | ||
10aca0f7 KH |
76 | /* Setup foreground and background colors of GC into FG and BG. If |
77 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
78 | may be NULL. */ | |
79 | ||
c2f5bfd6 KH |
80 | static void |
81 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
82 | FRAME_PTR f; | |
83 | struct face *face; | |
84 | GC gc; | |
85 | struct xftface_info *xftface_info; | |
86 | XftColor *fg, *bg; | |
87 | { | |
88 | if (xftface_info && face->gc == gc) | |
89 | { | |
90 | *fg = xftface_info->xft_fg; | |
91 | if (bg) | |
92 | *bg = xftface_info->xft_bg; | |
93 | } | |
94 | else | |
95 | { | |
96 | XGCValues xgcv; | |
97 | int fg_done = 0, bg_done = 0; | |
98 | ||
99 | BLOCK_INPUT; | |
100 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
101 | GCForeground | GCBackground, &xgcv); | |
102 | if (xftface_info) | |
103 | { | |
104 | if (xgcv.foreground == face->foreground) | |
105 | *fg = xftface_info->xft_fg, fg_done = 1; | |
106 | else if (xgcv.foreground == face->background) | |
107 | *fg = xftface_info->xft_bg, fg_done = 1; | |
108 | if (! bg) | |
109 | bg_done = 1; | |
110 | else if (xgcv.background == face->background) | |
111 | *bg = xftface_info->xft_bg, bg_done = 1; | |
112 | else if (xgcv.background == face->foreground) | |
113 | *bg = xftface_info->xft_fg, bg_done = 1; | |
114 | } | |
115 | ||
116 | if (fg_done + bg_done < 2) | |
117 | { | |
118 | XColor colors[2]; | |
119 | ||
120 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
121 | if (bg) | |
122 | colors[1].pixel = bg->pixel = xgcv.background; | |
123 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
124 | bg ? 2 : 1); | |
125 | fg->color.alpha = 0xFFFF; | |
126 | fg->color.red = colors[0].red; | |
127 | fg->color.green = colors[0].green; | |
128 | fg->color.blue = colors[0].blue; | |
129 | if (bg) | |
130 | { | |
131 | bg->color.alpha = 0xFFFF; | |
132 | bg->color.red = colors[1].red; | |
133 | bg->color.green = colors[1].green; | |
134 | bg->color.blue = colors[1].blue; | |
135 | } | |
136 | } | |
137 | UNBLOCK_INPUT; | |
138 | } | |
139 | } | |
140 | ||
c2f5bfd6 KH |
141 | |
142 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 143 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
3528e709 | 144 | static Lisp_Object xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
145 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); |
146 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
147 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
6570a1c4 | 148 | static int xftfont_has_char P_ ((Lisp_Object, int)); |
c2f5bfd6 KH |
149 | static unsigned xftfont_encode_char P_ ((struct font *, int)); |
150 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
151 | struct font_metrics *)); | |
152 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
a92ee6bf | 153 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); |
c2f5bfd6 KH |
154 | |
155 | struct font_driver xftfont_driver; | |
156 | ||
157 | static Lisp_Object | |
158 | xftfont_list (frame, spec) | |
159 | Lisp_Object frame; | |
160 | Lisp_Object spec; | |
161 | { | |
3528e709 | 162 | Lisp_Object list = ftfont_driver.list (frame, spec), tail; |
8510724d | 163 | |
3528e709 KH |
164 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
165 | ASET (XCAR (tail), FONT_TYPE_INDEX, Qxft); | |
166 | return list; | |
c2f5bfd6 KH |
167 | } |
168 | ||
10aca0f7 KH |
169 | static Lisp_Object |
170 | xftfont_match (frame, spec) | |
171 | Lisp_Object frame; | |
172 | Lisp_Object spec; | |
173 | { | |
174 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
175 | ||
3528e709 | 176 | if (! NILP (entity)) |
10aca0f7 KH |
177 | ASET (entity, FONT_TYPE_INDEX, Qxft); |
178 | return entity; | |
179 | } | |
180 | ||
1cf6763f | 181 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *, Lisp_Object)); |
0fce2b40 | 182 | extern FcCharSet *ftfont_get_fc_charset P_ ((Lisp_Object)); |
81094fab | 183 | extern Lisp_Object QCantialias; |
98d12656 | 184 | |
c2f5bfd6 KH |
185 | static FcChar8 ascii_printable[95]; |
186 | ||
637fa988 JD |
187 | static void |
188 | xftfont_fix_match (pat, match) | |
189 | FcPattern *pat, *match; | |
190 | { | |
191 | /* These values are not used for matching (except antialias), but for | |
192 | rendering, so make sure they are carried over to the match. | |
193 | We also put antialias here because most fonts are antialiased, so | |
194 | the match will have antialias true. */ | |
195 | ||
196 | FcBool b = FcTrue; | |
197 | int i; | |
198 | double dpi; | |
199 | ||
200 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &b); | |
201 | if (! b) | |
202 | { | |
203 | FcPatternDel (match, FC_ANTIALIAS); | |
204 | FcPatternAddBool (match, FC_ANTIALIAS, FcFalse); | |
205 | } | |
206 | FcPatternGetBool (pat, FC_HINTING, 0, &b); | |
207 | if (! b) | |
208 | { | |
209 | FcPatternDel (match, FC_HINTING); | |
210 | FcPatternAddBool (match, FC_HINTING, FcFalse); | |
211 | } | |
212 | if (FcResultMatch == FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &i)) | |
213 | { | |
214 | FcPatternDel (match, FC_HINT_STYLE); | |
215 | FcPatternAddInteger (match, FC_HINT_STYLE, i); | |
216 | } | |
217 | if (FcResultMatch == FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &i)) | |
218 | { | |
219 | FcPatternDel (match, FC_LCD_FILTER); | |
220 | FcPatternAddInteger (match, FC_LCD_FILTER, i); | |
221 | } | |
222 | if (FcResultMatch == FcPatternGetInteger (pat, FC_RGBA, 0, &i)) | |
223 | { | |
224 | FcPatternDel (match, FC_RGBA); | |
225 | FcPatternAddInteger (match, FC_RGBA, i); | |
226 | } | |
227 | if (FcResultMatch == FcPatternGetDouble (pat, FC_DPI, 0, &dpi)) | |
228 | { | |
229 | FcPatternDel (match, FC_DPI); | |
230 | FcPatternAddDouble (match, FC_DPI, dpi); | |
231 | } | |
232 | } | |
233 | ||
3528e709 | 234 | static Lisp_Object |
c2f5bfd6 KH |
235 | xftfont_open (f, entity, pixel_size) |
236 | FRAME_PTR f; | |
237 | Lisp_Object entity; | |
238 | int pixel_size; | |
239 | { | |
81094fab | 240 | FcResult result; |
c2f5bfd6 | 241 | Display *display = FRAME_X_DISPLAY (f); |
0fce2b40 | 242 | Lisp_Object val, filename, index, tail, font_object; |
81094fab | 243 | FcPattern *pat = NULL, *match; |
2d93c6bd | 244 | struct xftfont_info *xftfont_info = NULL; |
c2f5bfd6 KH |
245 | struct font *font; |
246 | double size = 0; | |
2d93c6bd | 247 | XftFont *xftfont = NULL; |
c2f5bfd6 | 248 | int spacing; |
3528e709 KH |
249 | char name[256]; |
250 | int len, i; | |
91c5bb27 | 251 | XGlyphInfo extents; |
365131ac | 252 | FT_Face ft_face; |
c2f5bfd6 | 253 | |
3528e709 | 254 | val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); |
686ee703 | 255 | if (! CONSP (val)) |
3528e709 | 256 | return Qnil; |
686ee703 KH |
257 | val = XCDR (val); |
258 | filename = XCAR (val); | |
0fce2b40 | 259 | index = XCDR (val); |
c2f5bfd6 KH |
260 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
261 | if (size == 0) | |
262 | size = pixel_size; | |
263 | pat = FcPatternCreate (); | |
81094fab KH |
264 | FcPatternAddInteger (pat, FC_WEIGHT, FONT_WEIGHT_NUMERIC (entity)); |
265 | i = FONT_SLANT_NUMERIC (entity) - 100; | |
266 | if (i < 0) i = 0; | |
267 | FcPatternAddInteger (pat, FC_SLANT, i); | |
268 | FcPatternAddInteger (pat, FC_WIDTH, FONT_WIDTH_NUMERIC (entity)); | |
c2f5bfd6 | 269 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); |
3cc2aca0 KH |
270 | val = AREF (entity, FONT_FAMILY_INDEX); |
271 | if (! NILP (val)) | |
272 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
dc2226d0 KH |
273 | val = AREF (entity, FONT_FOUNDRY_INDEX); |
274 | if (! NILP (val)) | |
275 | FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
276 | val = AREF (entity, FONT_SPACING_INDEX); | |
277 | if (! NILP (val)) | |
278 | FcPatternAddInteger (pat, FC_SPACING, XINT (val)); | |
279 | val = AREF (entity, FONT_DPI_INDEX); | |
280 | if (! NILP (val)) | |
281 | { | |
282 | double dbl = XINT (val); | |
283 | ||
284 | FcPatternAddDouble (pat, FC_DPI, dbl); | |
285 | } | |
286 | val = AREF (entity, FONT_AVGWIDTH_INDEX); | |
287 | if (INTEGERP (val) && XINT (val) == 0) | |
288 | FcPatternAddBool (pat, FC_SCALABLE, FcTrue); | |
0fce2b40 KH |
289 | /* This is necessary to identify the exact font (e.g. 10x20.pcf.gz |
290 | over 10x20-ISO8859-1.pcf.gz). */ | |
291 | FcPatternAddCharSet (pat, FC_CHARSET, ftfont_get_fc_charset (entity)); | |
dc2226d0 | 292 | |
81094fab KH |
293 | for (tail = AREF (entity, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
294 | { | |
295 | Lisp_Object key, val; | |
296 | ||
297 | key = XCAR (XCAR (tail)), val = XCDR (XCAR (tail)); | |
298 | if (EQ (key, QCantialias)) | |
637fa988 | 299 | FcPatternAddBool (pat, FC_ANTIALIAS, NILP (val) ? FcFalse : FcTrue); |
81094fab KH |
300 | else if (EQ (key, QChinting)) |
301 | FcPatternAddBool (pat, FC_HINTING, NILP (val) ? FcFalse : FcTrue); | |
302 | else if (EQ (key, QCautohint)) | |
303 | FcPatternAddBool (pat, FC_AUTOHINT, NILP (val) ? FcFalse : FcTrue); | |
304 | else if (EQ (key, QChintstyle)) | |
305 | { | |
306 | if (INTEGERP (val)) | |
ea12eb81 | 307 | FcPatternAddInteger (pat, FC_HINT_STYLE, XINT (val)); |
81094fab KH |
308 | } |
309 | else if (EQ (key, QCrgba)) | |
310 | { | |
311 | if (INTEGERP (val)) | |
312 | FcPatternAddInteger (pat, FC_RGBA, XINT (val)); | |
313 | } | |
808dd567 | 314 | #ifdef FC_EMBOLDEN |
81094fab KH |
315 | else if (EQ (key, QCembolden)) |
316 | FcPatternAddBool (pat, FC_EMBOLDEN, NILP (val) ? FcFalse : FcTrue); | |
808dd567 | 317 | #endif |
81094fab | 318 | } |
dcce3c58 | 319 | |
0fce2b40 KH |
320 | FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename)); |
321 | FcPatternAddInteger (pat, FC_INDEX, XINT (index)); | |
8510724d | 322 | |
0fce2b40 | 323 | |
dcce3c58 | 324 | BLOCK_INPUT; |
9cb363db YM |
325 | /* Make sure that the Xrender extension is added before the Xft one. |
326 | Otherwise, the close-display hook set by Xft is called after the | |
327 | one for Xrender, and the former tries to re-add the latter. This | |
328 | results in inconsistency of internal states and leads to X | |
329 | protocol error when one reconnects to the same X server. | |
330 | (Bug#1696) */ | |
331 | { | |
332 | int event_base, error_base; | |
333 | XRenderQueryExtension (display, &event_base, &error_base); | |
334 | } | |
637fa988 JD |
335 | |
336 | /* Substitute in values from X resources and XftDefaultSet. */ | |
337 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); | |
81094fab | 338 | match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result); |
637fa988 JD |
339 | xftfont_fix_match (pat, match); |
340 | ||
81094fab KH |
341 | FcPatternDestroy (pat); |
342 | xftfont = XftFontOpenPattern (display, match); | |
99061dfc | 343 | if (!xftfont) |
5c629bf6 | 344 | { |
99061dfc | 345 | UNBLOCK_INPUT; |
5c629bf6 CY |
346 | XftPatternDestroy (match); |
347 | return Qnil; | |
348 | } | |
99061dfc CY |
349 | ft_face = XftLockFace (xftfont); |
350 | UNBLOCK_INPUT; | |
351 | ||
c2f5bfd6 KH |
352 | /* We should not destroy PAT here because it is kept in XFTFONT and |
353 | destroyed automatically when XFTFONT is closed. */ | |
0fce2b40 | 354 | font_object = font_make_object (VECSIZE (struct xftfont_info), entity, size); |
3528e709 | 355 | ASET (font_object, FONT_TYPE_INDEX, Qxft); |
3528e709 KH |
356 | len = font_unparse_xlfd (entity, size, name, 256); |
357 | if (len > 0) | |
2781b4e0 | 358 | ASET (font_object, FONT_NAME_INDEX, make_string (name, len)); |
3528e709 KH |
359 | len = font_unparse_fcname (entity, size, name, 256); |
360 | if (len > 0) | |
2781b4e0 | 361 | ASET (font_object, FONT_FULLNAME_INDEX, make_string (name, len)); |
3528e709 KH |
362 | else |
363 | ASET (font_object, FONT_FULLNAME_INDEX, | |
364 | AREF (font_object, FONT_NAME_INDEX)); | |
686ee703 KH |
365 | ASET (font_object, FONT_FILE_INDEX, filename); |
366 | ASET (font_object, FONT_FORMAT_INDEX, | |
1cf6763f | 367 | ftfont_font_format (xftfont->pattern, filename)); |
3528e709 KH |
368 | font = XFONT_OBJECT (font_object); |
369 | font->pixel_size = pixel_size; | |
370 | font->driver = &xftfont_driver; | |
371 | font->encoding_charset = font->repertory_charset = -1; | |
372 | ||
373 | xftfont_info = (struct xftfont_info *) font; | |
c2f5bfd6 KH |
374 | xftfont_info->display = display; |
375 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
376 | xftfont_info->xftfont = xftfont; | |
c2f5bfd6 KH |
377 | font->pixel_size = size; |
378 | font->driver = &xftfont_driver; | |
686ee703 KH |
379 | if (INTEGERP (AREF (entity, FONT_SPACING_INDEX))) |
380 | spacing = XINT (AREF (entity, FONT_SPACING_INDEX)); | |
381 | else | |
c2f5bfd6 | 382 | spacing = FC_PROPORTIONAL; |
91c5bb27 KH |
383 | if (! ascii_printable[0]) |
384 | { | |
385 | int i; | |
386 | for (i = 0; i < 95; i++) | |
387 | ascii_printable[i] = ' ' + i; | |
388 | } | |
3528e709 | 389 | BLOCK_INPUT; |
c2f5bfd6 | 390 | if (spacing != FC_PROPORTIONAL) |
91c5bb27 | 391 | { |
3528e709 | 392 | font->min_width = font->average_width = font->space_width |
91c5bb27 KH |
393 | = xftfont->max_advance_width; |
394 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
395 | } | |
c2f5bfd6 KH |
396 | else |
397 | { | |
c2f5bfd6 | 398 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
3528e709 KH |
399 | font->space_width = extents.xOff; |
400 | if (font->space_width <= 0) | |
c2f5bfd6 | 401 | /* dirty workaround */ |
8510724d | 402 | font->space_width = pixel_size; |
c2f5bfd6 | 403 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
3528e709 | 404 | font->average_width = (font->space_width + extents.xOff) / 95; |
c2f5bfd6 | 405 | } |
dcce3c58 | 406 | UNBLOCK_INPUT; |
c2f5bfd6 | 407 | |
91c5bb27 | 408 | font->ascent = xftfont->ascent; |
91c5bb27 | 409 | font->descent = xftfont->descent; |
81094fab KH |
410 | if (pixel_size >= 5) |
411 | { | |
412 | /* The above condition is a dirty workaround because | |
413 | XftTextExtents8 behaves strangely for some fonts | |
414 | (e.g. "Dejavu Sans Mono") when pixel_size is less than 5. */ | |
415 | if (font->ascent < extents.y) | |
416 | font->ascent = extents.y; | |
417 | if (font->descent < extents.height - extents.y) | |
418 | font->descent = extents.height - extents.y; | |
419 | } | |
3528e709 | 420 | font->height = font->ascent + font->descent; |
91c5bb27 | 421 | |
3528e709 | 422 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) |
c2f5bfd6 | 423 | { |
3528e709 KH |
424 | int upEM = ft_face->units_per_EM; |
425 | ||
426 | font->underline_position = -ft_face->underline_position * size / upEM; | |
bc981e4e | 427 | font->underline_thickness = ft_face->underline_thickness * size / upEM; |
951b8112 KH |
428 | if (font->underline_thickness > 2) |
429 | font->underline_position -= font->underline_thickness / 2; | |
c2f5bfd6 KH |
430 | } |
431 | else | |
432 | { | |
3528e709 KH |
433 | font->underline_position = -1; |
434 | font->underline_thickness = 0; | |
c2f5bfd6 | 435 | } |
3528e709 KH |
436 | #ifdef HAVE_LIBOTF |
437 | xftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
438 | xftfont_info->otf = NULL; | |
439 | #endif /* HAVE_LIBOTF */ | |
0fce2b40 | 440 | xftfont_info->ft_size = ft_face->size; |
c2f5bfd6 | 441 | |
3528e709 KH |
442 | /* Unfortunately Xft doesn't provide a way to get minimum char |
443 | width. So, we use space_width instead. */ | |
444 | font->min_width = font->space_width; | |
2d93c6bd | 445 | |
3528e709 KH |
446 | font->baseline_offset = 0; |
447 | font->relative_compose = 0; | |
448 | font->default_ascent = 0; | |
449 | font->vertical_centering = 0; | |
0fce2b40 KH |
450 | #ifdef FT_BDF_H |
451 | if (! (ft_face->face_flags & FT_FACE_FLAG_SFNT)) | |
452 | { | |
453 | BDF_PropertyRec rec; | |
454 | ||
455 | if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &rec) == 0 | |
456 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
457 | font->baseline_offset = rec.u.integer; | |
458 | if (FT_Get_BDF_Property (ft_face, "_MULE_RELATIVE_COMPOSE", &rec) == 0 | |
459 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
460 | font->relative_compose = rec.u.integer; | |
461 | if (FT_Get_BDF_Property (ft_face, "_MULE_DEFAULT_ASCENT", &rec) == 0 | |
462 | && rec.type == BDF_PROPERTY_TYPE_INTEGER) | |
463 | font->default_ascent = rec.u.integer; | |
464 | } | |
465 | #endif | |
3528e709 KH |
466 | |
467 | return font_object; | |
c2f5bfd6 KH |
468 | } |
469 | ||
470 | static void | |
471 | xftfont_close (f, font) | |
472 | FRAME_PTR f; | |
473 | struct font *font; | |
474 | { | |
475 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
476 | ||
4613015e KH |
477 | #ifdef HAVE_LIBOTF |
478 | if (xftfont_info->otf) | |
479 | OTF_close (xftfont_info->otf); | |
480 | #endif | |
3528e709 | 481 | BLOCK_INPUT; |
0fce2b40 | 482 | XftUnlockFace (xftfont_info->xftfont); |
c2f5bfd6 | 483 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); |
3528e709 | 484 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
485 | } |
486 | ||
c2f5bfd6 KH |
487 | static int |
488 | xftfont_prepare_face (f, face) | |
489 | FRAME_PTR f; | |
490 | struct face *face; | |
491 | { | |
e2d0c925 | 492 | struct xftface_info *xftface_info; |
c2f5bfd6 | 493 | |
a703d27d KH |
494 | #if 0 |
495 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
496 | if (face != face->ascii_face) |
497 | { | |
498 | face->extra = face->ascii_face->extra; | |
499 | return 0; | |
500 | } | |
a703d27d | 501 | #endif |
e2d0c925 KH |
502 | |
503 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
504 | if (! xftface_info) |
505 | return -1; | |
c2f5bfd6 KH |
506 | xftfont_get_colors (f, face, face->gc, NULL, |
507 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
c2f5bfd6 KH |
508 | face->extra = xftface_info; |
509 | return 0; | |
510 | } | |
511 | ||
512 | static void | |
513 | xftfont_done_face (f, face) | |
514 | FRAME_PTR f; | |
515 | struct face *face; | |
516 | { | |
e2d0c925 | 517 | struct xftface_info *xftface_info; |
8510724d | 518 | |
a703d27d KH |
519 | #if 0 |
520 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
521 | if (face != face->ascii_face |
522 | || ! face->extra) | |
523 | return; | |
a703d27d | 524 | #endif |
c2f5bfd6 | 525 | |
e2d0c925 | 526 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
527 | if (xftface_info) |
528 | { | |
773039e8 | 529 | free (xftface_info); |
a92ee6bf | 530 | face->extra = NULL; |
773039e8 | 531 | } |
c2f5bfd6 KH |
532 | } |
533 | ||
b840b299 KH |
534 | extern Lisp_Object Qja, Qko; |
535 | ||
6570a1c4 KH |
536 | static int |
537 | xftfont_has_char (font, c) | |
538 | Lisp_Object font; | |
539 | int c; | |
540 | { | |
541 | struct xftfont_info *xftfont_info; | |
b840b299 | 542 | struct charset *cs = NULL; |
6570a1c4 | 543 | |
b840b299 KH |
544 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) |
545 | && charset_jisx0208 >= 0) | |
546 | cs = CHARSET_FROM_ID (charset_jisx0208); | |
547 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) | |
548 | && charset_ksc5601 >= 0) | |
549 | cs = CHARSET_FROM_ID (charset_ksc5601); | |
550 | if (cs) | |
551 | return (ENCODE_CHAR (cs, c) != CHARSET_INVALID_CODE (cs)); | |
552 | ||
ea12eb81 KH |
553 | if (FONT_ENTITY_P (font)) |
554 | return ftfont_driver.has_char (font, c); | |
6570a1c4 KH |
555 | xftfont_info = (struct xftfont_info *) XFONT_OBJECT (font); |
556 | return (XftCharExists (xftfont_info->display, xftfont_info->xftfont, | |
557 | (FcChar32) c) == FcTrue); | |
558 | } | |
559 | ||
c2f5bfd6 KH |
560 | static unsigned |
561 | xftfont_encode_char (font, c) | |
562 | struct font *font; | |
563 | int c; | |
564 | { | |
565 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
566 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
567 | (FcChar32) c); | |
8510724d | 568 | |
b5b2545a | 569 | return (code ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
570 | } |
571 | ||
572 | static int | |
573 | xftfont_text_extents (font, code, nglyphs, metrics) | |
574 | struct font *font; | |
575 | unsigned *code; | |
576 | int nglyphs; | |
577 | struct font_metrics *metrics; | |
578 | { | |
579 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
580 | XGlyphInfo extents; | |
581 | ||
582 | BLOCK_INPUT; | |
583 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
584 | &extents); | |
585 | UNBLOCK_INPUT; | |
586 | if (metrics) | |
587 | { | |
588 | metrics->lbearing = - extents.x; | |
589 | metrics->rbearing = - extents.x + extents.width; | |
590 | metrics->width = extents.xOff; | |
591 | metrics->ascent = extents.y; | |
4b848612 | 592 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
593 | } |
594 | return extents.xOff; | |
595 | } | |
596 | ||
a92ee6bf KH |
597 | static XftDraw * |
598 | xftfont_get_xft_draw (f) | |
599 | FRAME_PTR f; | |
600 | { | |
8510724d | 601 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); |
a92ee6bf KH |
602 | |
603 | if (! xft_draw) | |
604 | { | |
605 | BLOCK_INPUT; | |
606 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
607 | FRAME_X_WINDOW (f), | |
608 | FRAME_X_VISUAL (f), | |
609 | FRAME_X_COLORMAP (f)); | |
610 | UNBLOCK_INPUT; | |
611 | if (! xft_draw) | |
612 | abort (); | |
613 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
614 | } | |
615 | return xft_draw; | |
616 | } | |
617 | ||
c2f5bfd6 KH |
618 | static int |
619 | xftfont_draw (s, from, to, x, y, with_background) | |
620 | struct glyph_string *s; | |
621 | int from, to, x, y, with_background; | |
622 | { | |
623 | FRAME_PTR f = s->f; | |
624 | struct face *face = s->face; | |
3528e709 | 625 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font; |
c78c1659 | 626 | struct xftface_info *xftface_info = NULL; |
a92ee6bf | 627 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
628 | FT_UInt *code; |
629 | XftColor fg, bg; | |
c2f5bfd6 KH |
630 | int len = to - from; |
631 | int i; | |
632 | ||
3528e709 | 633 | if (s->font == face->font) |
a92ee6bf | 634 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 635 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 636 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 637 | BLOCK_INPUT; |
03d198e8 KH |
638 | if (s->num_clips > 0) |
639 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
640 | else | |
641 | XftDrawSetClip (xft_draw, NULL); | |
642 | ||
c2f5bfd6 | 643 | if (with_background) |
3528e709 KH |
644 | XftDrawRect (xft_draw, &bg, |
645 | x, y - face->font->ascent, s->width, face->font->height); | |
c2f5bfd6 KH |
646 | code = alloca (sizeof (FT_UInt) * len); |
647 | for (i = 0; i < len; i++) | |
648 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
649 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
650 | ||
785543da KH |
651 | if (s->padding_p) |
652 | for (i = 0; i < len; i++) | |
653 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
654 | x + i, y, code + i, 1); | |
655 | else | |
656 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
657 | x, y, code, len); | |
c2f5bfd6 KH |
658 | UNBLOCK_INPUT; |
659 | ||
660 | return len; | |
661 | } | |
662 | ||
a92ee6bf KH |
663 | static int |
664 | xftfont_end_for_frame (f) | |
665 | FRAME_PTR f; | |
666 | { | |
667 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); | |
668 | ||
669 | if (xft_draw) | |
670 | { | |
671 | BLOCK_INPUT; | |
672 | XftDrawDestroy (xft_draw); | |
673 | UNBLOCK_INPUT; | |
674 | font_put_frame_data (f, &xftfont_driver, NULL); | |
675 | } | |
676 | return 0; | |
677 | } | |
c2f5bfd6 KH |
678 | |
679 | void | |
680 | syms_of_xftfont () | |
681 | { | |
682 | DEFSYM (Qxft, "xft"); | |
81094fab | 683 | DEFSYM (QChinting, ":hinting"); |
9743ac48 | 684 | DEFSYM (QCautohint, ":autohint"); |
81094fab KH |
685 | DEFSYM (QChintstyle, ":hintstyle"); |
686 | DEFSYM (QCrgba, ":rgba"); | |
687 | DEFSYM (QCembolden, ":embolden"); | |
c2f5bfd6 KH |
688 | |
689 | xftfont_driver = ftfont_driver; | |
690 | xftfont_driver.type = Qxft; | |
691 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
692 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 693 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
694 | xftfont_driver.open = xftfont_open; |
695 | xftfont_driver.close = xftfont_close; | |
696 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
697 | xftfont_driver.done_face = xftfont_done_face; | |
6570a1c4 | 698 | xftfont_driver.has_char = xftfont_has_char; |
c2f5bfd6 KH |
699 | xftfont_driver.encode_char = xftfont_encode_char; |
700 | xftfont_driver.text_extents = xftfont_text_extents; | |
701 | xftfont_driver.draw = xftfont_draw; | |
a92ee6bf | 702 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
c2f5bfd6 KH |
703 | |
704 | register_font_driver (&xftfont_driver, NULL); | |
705 | } | |
885b7d09 MB |
706 | |
707 | /* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605 | |
708 | (do not change this comment) */ |