Commit | Line | Data |
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c2f5bfd6 KH |
1 | /* xftfont.c -- XFT font driver. |
2 | Copyright (C) 2006 Free Software Foundation, Inc. | |
3 | Copyright (C) 2006 | |
4 | National Institute of Advanced Industrial Science and Technology (AIST) | |
5 | Registration Number H13PRO009 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
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 | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
22 | Boston, MA 02110-1301, USA. */ | |
23 | ||
24 | #include <config.h> | |
25 | #include <stdio.h> | |
26 | #include <X11/Xlib.h> | |
27 | #include <X11/Xft/Xft.h> | |
28 | ||
29 | #include "lisp.h" | |
30 | #include "dispextern.h" | |
31 | #include "xterm.h" | |
32 | #include "frame.h" | |
33 | #include "blockinput.h" | |
34 | #include "character.h" | |
35 | #include "charset.h" | |
36 | #include "fontset.h" | |
37 | #include "font.h" | |
38 | ||
39 | /* Xft font driver. */ | |
40 | ||
41 | static Lisp_Object Qxft; | |
42 | ||
43 | /* The actual structure for Xft font that can be casted to struct | |
44 | font. */ | |
45 | ||
46 | struct xftfont_info | |
47 | { | |
48 | struct font font; | |
49 | Display *display; | |
50 | int screen; | |
51 | XftFont *xftfont; | |
10aca0f7 | 52 | FT_Face ft_face; /* set to XftLockFace (xftfont) */ |
c2f5bfd6 KH |
53 | }; |
54 | ||
55 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 56 | |
c2f5bfd6 KH |
57 | struct xftface_info |
58 | { | |
10aca0f7 KH |
59 | XftColor xft_fg; /* color for face->foreground */ |
60 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
61 | }; |
62 | ||
63 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
64 | struct xftface_info *, | |
65 | XftColor *fg, XftColor *bg)); | |
66 | static Font xftfont_default_fid P_ ((FRAME_PTR)); | |
67 | ||
68 | ||
10aca0f7 KH |
69 | /* Setup foreground and background colors of GC into FG and BG. If |
70 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
71 | may be NULL. */ | |
72 | ||
c2f5bfd6 KH |
73 | static void |
74 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
75 | FRAME_PTR f; | |
76 | struct face *face; | |
77 | GC gc; | |
78 | struct xftface_info *xftface_info; | |
79 | XftColor *fg, *bg; | |
80 | { | |
81 | if (xftface_info && face->gc == gc) | |
82 | { | |
83 | *fg = xftface_info->xft_fg; | |
84 | if (bg) | |
85 | *bg = xftface_info->xft_bg; | |
86 | } | |
87 | else | |
88 | { | |
89 | XGCValues xgcv; | |
90 | int fg_done = 0, bg_done = 0; | |
91 | ||
92 | BLOCK_INPUT; | |
93 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
94 | GCForeground | GCBackground, &xgcv); | |
95 | if (xftface_info) | |
96 | { | |
97 | if (xgcv.foreground == face->foreground) | |
98 | *fg = xftface_info->xft_fg, fg_done = 1; | |
99 | else if (xgcv.foreground == face->background) | |
100 | *fg = xftface_info->xft_bg, fg_done = 1; | |
101 | if (! bg) | |
102 | bg_done = 1; | |
103 | else if (xgcv.background == face->background) | |
104 | *bg = xftface_info->xft_bg, bg_done = 1; | |
105 | else if (xgcv.background == face->foreground) | |
106 | *bg = xftface_info->xft_fg, bg_done = 1; | |
107 | } | |
108 | ||
109 | if (fg_done + bg_done < 2) | |
110 | { | |
111 | XColor colors[2]; | |
112 | ||
113 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
114 | if (bg) | |
115 | colors[1].pixel = bg->pixel = xgcv.background; | |
116 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
117 | bg ? 2 : 1); | |
118 | fg->color.alpha = 0xFFFF; | |
119 | fg->color.red = colors[0].red; | |
120 | fg->color.green = colors[0].green; | |
121 | fg->color.blue = colors[0].blue; | |
122 | if (bg) | |
123 | { | |
124 | bg->color.alpha = 0xFFFF; | |
125 | bg->color.red = colors[1].red; | |
126 | bg->color.green = colors[1].green; | |
127 | bg->color.blue = colors[1].blue; | |
128 | } | |
129 | } | |
130 | UNBLOCK_INPUT; | |
131 | } | |
132 | } | |
133 | ||
10aca0f7 KH |
134 | /* Return the default Font ID on frame F. The Returned Font ID is |
135 | stored in the GC of the frame F, but the font is never used. So, | |
136 | any ID is ok as long as it is valid. */ | |
c2f5bfd6 KH |
137 | |
138 | static Font | |
139 | xftfont_default_fid (f) | |
140 | FRAME_PTR f; | |
141 | { | |
142 | static int fid_known; | |
143 | static Font fid; | |
144 | ||
145 | if (! fid_known) | |
146 | { | |
147 | fid = XLoadFont (FRAME_X_DISPLAY (f), "fixed"); | |
148 | if (! fid) | |
149 | { | |
150 | fid = XLoadFont (FRAME_X_DISPLAY (f), "*"); | |
151 | if (! fid) | |
152 | abort (); | |
153 | } | |
322f8671 | 154 | fid_known = 1; |
c2f5bfd6 KH |
155 | } |
156 | return fid; | |
157 | } | |
158 | ||
159 | ||
160 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 161 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
c2f5bfd6 KH |
162 | static struct font *xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
163 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); | |
164 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
165 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
166 | static unsigned xftfont_encode_char P_ ((struct font *, int)); | |
167 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
168 | struct font_metrics *)); | |
169 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
170 | ||
171 | static int xftfont_anchor_point P_ ((struct font *, unsigned, int, | |
172 | int *, int *)); | |
a92ee6bf KH |
173 | static int xftfont_start_for_frame P_ ((FRAME_PTR f)); |
174 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); | |
c2f5bfd6 KH |
175 | |
176 | struct font_driver xftfont_driver; | |
177 | ||
178 | static Lisp_Object | |
179 | xftfont_list (frame, spec) | |
180 | Lisp_Object frame; | |
181 | Lisp_Object spec; | |
182 | { | |
183 | Lisp_Object val = ftfont_driver.list (frame, spec); | |
10aca0f7 | 184 | int i; |
c2f5bfd6 KH |
185 | |
186 | if (! NILP (val)) | |
10aca0f7 KH |
187 | for (i = 0; i < ASIZE (val); i++) |
188 | ASET (AREF (val, i), FONT_TYPE_INDEX, Qxft); | |
c2f5bfd6 KH |
189 | return val; |
190 | } | |
191 | ||
10aca0f7 KH |
192 | static Lisp_Object |
193 | xftfont_match (frame, spec) | |
194 | Lisp_Object frame; | |
195 | Lisp_Object spec; | |
196 | { | |
197 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
198 | ||
199 | if (VECTORP (entity)) | |
200 | ASET (entity, FONT_TYPE_INDEX, Qxft); | |
201 | return entity; | |
202 | } | |
203 | ||
98d12656 KH |
204 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *)); |
205 | ||
c2f5bfd6 KH |
206 | static FcChar8 ascii_printable[95]; |
207 | ||
208 | static struct font * | |
209 | xftfont_open (f, entity, pixel_size) | |
210 | FRAME_PTR f; | |
211 | Lisp_Object entity; | |
212 | int pixel_size; | |
213 | { | |
214 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
215 | Display *display = FRAME_X_DISPLAY (f); | |
216 | Lisp_Object val; | |
2d93c6bd KH |
217 | FcPattern *pattern, *pat = NULL; |
218 | FcChar8 *file; | |
219 | struct xftfont_info *xftfont_info = NULL; | |
220 | XFontStruct *xfont = NULL; | |
c2f5bfd6 KH |
221 | struct font *font; |
222 | double size = 0; | |
2d93c6bd | 223 | XftFont *xftfont = NULL; |
c2f5bfd6 | 224 | int spacing; |
2d93c6bd | 225 | char *name; |
dcce3c58 | 226 | int len; |
91c5bb27 | 227 | XGlyphInfo extents; |
c2f5bfd6 KH |
228 | |
229 | val = AREF (entity, FONT_EXTRA_INDEX); | |
230 | if (XTYPE (val) != Lisp_Misc | |
231 | || XMISCTYPE (val) != Lisp_Misc_Save_Value) | |
232 | return NULL; | |
233 | pattern = XSAVE_VALUE (val)->pointer; | |
234 | if (FcPatternGetString (pattern, FC_FILE, 0, &file) != FcResultMatch) | |
235 | return NULL; | |
236 | ||
237 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
238 | if (size == 0) | |
239 | size = pixel_size; | |
dcce3c58 | 240 | |
c2f5bfd6 KH |
241 | pat = FcPatternCreate (); |
242 | FcPatternAddString (pat, FC_FILE, file); | |
243 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); | |
fa762662 | 244 | /*FcPatternAddBool (pat, FC_ANTIALIAS, FcTrue);*/ |
3cc2aca0 KH |
245 | val = AREF (entity, FONT_FAMILY_INDEX); |
246 | if (! NILP (val)) | |
247 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
248 | FcConfigSubstitute (NULL, pat, FcMatchPattern); | |
dcce3c58 KH |
249 | |
250 | BLOCK_INPUT; | |
4f4426f9 | 251 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); |
c2f5bfd6 KH |
252 | xftfont = XftFontOpenPattern (display, pat); |
253 | /* We should not destroy PAT here because it is kept in XFTFONT and | |
254 | destroyed automatically when XFTFONT is closed. */ | |
255 | if (! xftfont) | |
2d93c6bd | 256 | goto err; |
c2f5bfd6 KH |
257 | |
258 | xftfont_info = malloc (sizeof (struct xftfont_info)); | |
259 | if (! xftfont_info) | |
2d93c6bd | 260 | goto err; |
c2f5bfd6 | 261 | xfont = malloc (sizeof (XFontStruct)); |
2d93c6bd KH |
262 | if (! xfont) |
263 | goto err; | |
c2f5bfd6 KH |
264 | xftfont_info->display = display; |
265 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
266 | xftfont_info->xftfont = xftfont; | |
267 | xftfont_info->ft_face = XftLockFace (xftfont); | |
268 | ||
269 | font = (struct font *) xftfont_info; | |
b2e0f618 | 270 | font->format = ftfont_font_format (xftfont->pattern); |
c2f5bfd6 KH |
271 | font->entity = entity; |
272 | font->pixel_size = size; | |
273 | font->driver = &xftfont_driver; | |
560fd3fa | 274 | len = 96; |
2d93c6bd KH |
275 | name = malloc (len); |
276 | while (name && font_unparse_fcname (entity, pixel_size, name, len) < 0) | |
277 | { | |
278 | char *new = realloc (name, len += 32); | |
279 | ||
280 | if (! new) | |
281 | free (name); | |
282 | name = new; | |
283 | } | |
284 | if (! name) | |
285 | goto err; | |
286 | font->font.full_name = font->font.name = name; | |
c2f5bfd6 KH |
287 | font->file_name = (char *) file; |
288 | font->font.size = xftfont->max_advance_width; | |
8bf90572 | 289 | font->font.charset = font->encoding_charset = font->repertory_charset = -1; |
c2f5bfd6 KH |
290 | |
291 | if (FcPatternGetInteger (xftfont->pattern, FC_SPACING, 0, &spacing) | |
292 | != FcResultMatch) | |
293 | spacing = FC_PROPORTIONAL; | |
91c5bb27 KH |
294 | if (! ascii_printable[0]) |
295 | { | |
296 | int i; | |
297 | for (i = 0; i < 95; i++) | |
298 | ascii_printable[i] = ' ' + i; | |
299 | } | |
c2f5bfd6 | 300 | if (spacing != FC_PROPORTIONAL) |
91c5bb27 KH |
301 | { |
302 | font->font.average_width = font->font.space_width | |
303 | = xftfont->max_advance_width; | |
304 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
305 | } | |
c2f5bfd6 KH |
306 | else |
307 | { | |
c2f5bfd6 KH |
308 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
309 | font->font.space_width = extents.xOff; | |
310 | if (font->font.space_width <= 0) | |
311 | /* dirty workaround */ | |
312 | font->font.space_width = pixel_size; | |
313 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
314 | font->font.average_width = (font->font.space_width + extents.xOff) / 95; | |
315 | } | |
dcce3c58 | 316 | UNBLOCK_INPUT; |
c2f5bfd6 | 317 | |
91c5bb27 KH |
318 | font->ascent = xftfont->ascent; |
319 | if (font->ascent < extents.y) | |
320 | font->ascent = extents.y; | |
321 | font->descent = xftfont->descent; | |
322 | if (font->descent < extents.height - extents.y) | |
323 | font->descent = extents.height - extents.y; | |
324 | font->font.height = font->ascent + font->descent; | |
325 | ||
c2f5bfd6 KH |
326 | /* Unfortunately Xft doesn't provide a way to get minimum char |
327 | width. So, we use space_width instead. */ | |
328 | font->min_width = font->font.space_width; | |
329 | ||
330 | font->font.baseline_offset = 0; | |
331 | font->font.relative_compose = 0; | |
332 | font->font.default_ascent = 0; | |
333 | font->font.vertical_centering = 0; | |
334 | ||
335 | /* Setup pseudo XFontStruct */ | |
336 | xfont->fid = xftfont_default_fid (f); | |
91c5bb27 KH |
337 | xfont->ascent = font->ascent; |
338 | xfont->descent = font->descent; | |
339 | xfont->max_bounds.descent = font->descent; | |
c2f5bfd6 KH |
340 | xfont->max_bounds.width = xftfont->max_advance_width; |
341 | xfont->min_bounds.width = font->font.space_width; | |
342 | font->font.font = xfont; | |
343 | ||
344 | dpyinfo->n_fonts++; | |
345 | ||
346 | /* Set global flag fonts_changed_p to non-zero if the font loaded | |
347 | has a character with a smaller width than any other character | |
348 | before, or if the font loaded has a smaller height than any other | |
349 | font loaded before. If this happens, it will make a glyph matrix | |
350 | reallocation necessary. */ | |
351 | if (dpyinfo->n_fonts == 1) | |
352 | { | |
353 | dpyinfo->smallest_font_height = font->font.height; | |
354 | dpyinfo->smallest_char_width = font->min_width; | |
355 | fonts_changed_p = 1; | |
356 | } | |
357 | else | |
358 | { | |
359 | if (dpyinfo->smallest_font_height > font->font.height) | |
360 | dpyinfo->smallest_font_height = font->font.height, | |
361 | fonts_changed_p |= 1; | |
362 | if (dpyinfo->smallest_char_width > font->min_width) | |
363 | dpyinfo->smallest_char_width = font->min_width, | |
364 | fonts_changed_p |= 1; | |
365 | } | |
366 | ||
367 | return font; | |
2d93c6bd KH |
368 | |
369 | err: | |
370 | if (xftfont) XftFontClose (display, xftfont); | |
371 | UNBLOCK_INPUT; | |
372 | if (xftfont_info) free (xftfont_info); | |
373 | if (xfont) free (xfont); | |
374 | return NULL; | |
c2f5bfd6 KH |
375 | } |
376 | ||
377 | static void | |
378 | xftfont_close (f, font) | |
379 | FRAME_PTR f; | |
380 | struct font *font; | |
381 | { | |
382 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
383 | ||
384 | XftUnlockFace (xftfont_info->xftfont); | |
385 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); | |
dcce3c58 KH |
386 | if (font->font.name) |
387 | free (font->font.name); | |
c2f5bfd6 KH |
388 | free (font); |
389 | FRAME_X_DISPLAY_INFO (f)->n_fonts--; | |
390 | } | |
391 | ||
c2f5bfd6 KH |
392 | static int |
393 | xftfont_prepare_face (f, face) | |
394 | FRAME_PTR f; | |
395 | struct face *face; | |
396 | { | |
e2d0c925 | 397 | struct xftface_info *xftface_info; |
c2f5bfd6 | 398 | |
a703d27d KH |
399 | #if 0 |
400 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
401 | if (face != face->ascii_face) |
402 | { | |
403 | face->extra = face->ascii_face->extra; | |
404 | return 0; | |
405 | } | |
a703d27d | 406 | #endif |
e2d0c925 KH |
407 | |
408 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
409 | if (! xftface_info) |
410 | return -1; | |
411 | ||
412 | BLOCK_INPUT; | |
c2f5bfd6 KH |
413 | xftfont_get_colors (f, face, face->gc, NULL, |
414 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
415 | UNBLOCK_INPUT; | |
416 | ||
417 | face->extra = xftface_info; | |
418 | return 0; | |
419 | } | |
420 | ||
421 | static void | |
422 | xftfont_done_face (f, face) | |
423 | FRAME_PTR f; | |
424 | struct face *face; | |
425 | { | |
e2d0c925 KH |
426 | struct xftface_info *xftface_info; |
427 | ||
a703d27d KH |
428 | #if 0 |
429 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
430 | if (face != face->ascii_face |
431 | || ! face->extra) | |
432 | return; | |
a703d27d | 433 | #endif |
c2f5bfd6 | 434 | |
e2d0c925 | 435 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
436 | if (xftface_info) |
437 | { | |
773039e8 | 438 | free (xftface_info); |
a92ee6bf | 439 | face->extra = NULL; |
773039e8 | 440 | } |
c2f5bfd6 KH |
441 | } |
442 | ||
443 | static unsigned | |
444 | xftfont_encode_char (font, c) | |
445 | struct font *font; | |
446 | int c; | |
447 | { | |
448 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
449 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
450 | (FcChar32) c); | |
451 | ||
452 | return (code ? code : 0xFFFFFFFF); | |
453 | } | |
454 | ||
455 | static int | |
456 | xftfont_text_extents (font, code, nglyphs, metrics) | |
457 | struct font *font; | |
458 | unsigned *code; | |
459 | int nglyphs; | |
460 | struct font_metrics *metrics; | |
461 | { | |
462 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
463 | XGlyphInfo extents; | |
464 | ||
465 | BLOCK_INPUT; | |
466 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
467 | &extents); | |
468 | UNBLOCK_INPUT; | |
469 | if (metrics) | |
470 | { | |
471 | metrics->lbearing = - extents.x; | |
472 | metrics->rbearing = - extents.x + extents.width; | |
473 | metrics->width = extents.xOff; | |
474 | metrics->ascent = extents.y; | |
4b848612 | 475 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
476 | } |
477 | return extents.xOff; | |
478 | } | |
479 | ||
a92ee6bf KH |
480 | static XftDraw * |
481 | xftfont_get_xft_draw (f) | |
482 | FRAME_PTR f; | |
483 | { | |
484 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver);; | |
485 | ||
486 | if (! xft_draw) | |
487 | { | |
488 | BLOCK_INPUT; | |
489 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
490 | FRAME_X_WINDOW (f), | |
491 | FRAME_X_VISUAL (f), | |
492 | FRAME_X_COLORMAP (f)); | |
493 | UNBLOCK_INPUT; | |
494 | if (! xft_draw) | |
495 | abort (); | |
496 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
497 | } | |
498 | return xft_draw; | |
499 | } | |
500 | ||
c2f5bfd6 KH |
501 | static int |
502 | xftfont_draw (s, from, to, x, y, with_background) | |
503 | struct glyph_string *s; | |
504 | int from, to, x, y, with_background; | |
505 | { | |
506 | FRAME_PTR f = s->f; | |
507 | struct face *face = s->face; | |
c78c1659 KH |
508 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font_info; |
509 | struct xftface_info *xftface_info = NULL; | |
a92ee6bf | 510 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
511 | FT_UInt *code; |
512 | XftColor fg, bg; | |
513 | XRectangle r; | |
514 | int len = to - from; | |
515 | int i; | |
516 | ||
c78c1659 | 517 | if (s->font_info == face->font_info) |
a92ee6bf | 518 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 519 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 520 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 521 | BLOCK_INPUT; |
03d198e8 KH |
522 | if (s->num_clips > 0) |
523 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
524 | else | |
525 | XftDrawSetClip (xft_draw, NULL); | |
526 | ||
c2f5bfd6 KH |
527 | if (with_background) |
528 | { | |
529 | struct font *font = (struct font *) face->font_info; | |
530 | ||
c78c1659 | 531 | XftDrawRect (xft_draw, &bg, |
c2f5bfd6 KH |
532 | x, y - face->font->ascent, s->width, font->font.height); |
533 | } | |
534 | code = alloca (sizeof (FT_UInt) * len); | |
535 | for (i = 0; i < len; i++) | |
536 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
537 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
538 | ||
c78c1659 | 539 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, |
c2f5bfd6 | 540 | x, y, code, len); |
c2f5bfd6 KH |
541 | UNBLOCK_INPUT; |
542 | ||
543 | return len; | |
544 | } | |
545 | ||
546 | static int | |
547 | xftfont_anchor_point (font, code, index, x, y) | |
548 | struct font *font; | |
549 | unsigned code; | |
550 | int index; | |
551 | int *x, *y; | |
552 | { | |
553 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
554 | FT_Face ft_face = xftfont_info->ft_face; | |
555 | ||
556 | if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0) | |
557 | return -1; | |
558 | if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) | |
559 | return -1; | |
560 | if (index >= ft_face->glyph->outline.n_points) | |
561 | return -1; | |
562 | *x = ft_face->glyph->outline.points[index].x; | |
563 | *y = ft_face->glyph->outline.points[index].y; | |
564 | return 0; | |
565 | } | |
566 | ||
a92ee6bf KH |
567 | static int |
568 | xftfont_end_for_frame (f) | |
569 | FRAME_PTR f; | |
570 | { | |
571 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); | |
572 | ||
573 | if (xft_draw) | |
574 | { | |
575 | BLOCK_INPUT; | |
576 | XftDrawDestroy (xft_draw); | |
577 | UNBLOCK_INPUT; | |
578 | font_put_frame_data (f, &xftfont_driver, NULL); | |
579 | } | |
580 | return 0; | |
581 | } | |
c2f5bfd6 KH |
582 | |
583 | void | |
584 | syms_of_xftfont () | |
585 | { | |
586 | DEFSYM (Qxft, "xft"); | |
587 | ||
588 | xftfont_driver = ftfont_driver; | |
589 | xftfont_driver.type = Qxft; | |
590 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
591 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 592 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
593 | xftfont_driver.open = xftfont_open; |
594 | xftfont_driver.close = xftfont_close; | |
595 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
596 | xftfont_driver.done_face = xftfont_done_face; | |
597 | xftfont_driver.encode_char = xftfont_encode_char; | |
598 | xftfont_driver.text_extents = xftfont_text_extents; | |
599 | xftfont_driver.draw = xftfont_draw; | |
600 | xftfont_driver.anchor_point = xftfont_anchor_point; | |
a92ee6bf | 601 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
c2f5bfd6 KH |
602 | |
603 | register_font_driver (&xftfont_driver, NULL); | |
604 | } | |
885b7d09 MB |
605 | |
606 | /* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605 | |
607 | (do not change this comment) */ |