Commit | Line | Data |
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c2f5bfd6 KH |
1 | /* xftfont.c -- XFT font driver. |
2 | Copyright (C) 2006 Free Software Foundation, Inc. | |
4613015e | 3 | Copyright (C) 2006, 2007 |
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 | ||
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" | |
4613015e | 38 | #include "ftfont.h" |
c2f5bfd6 KH |
39 | |
40 | /* Xft font driver. */ | |
41 | ||
42 | static Lisp_Object Qxft; | |
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; | |
50 | Display *display; | |
51 | int screen; | |
52 | XftFont *xftfont; | |
4613015e KH |
53 | FT_Face ft_face; /* Set to the value of XftLockFace (xftfont). */ |
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 */ |
c2f5bfd6 KH |
58 | }; |
59 | ||
60 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 61 | |
c2f5bfd6 KH |
62 | struct xftface_info |
63 | { | |
10aca0f7 KH |
64 | XftColor xft_fg; /* color for face->foreground */ |
65 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
66 | }; |
67 | ||
68 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
69 | struct xftface_info *, | |
70 | XftColor *fg, XftColor *bg)); | |
71 | static Font xftfont_default_fid P_ ((FRAME_PTR)); | |
72 | ||
73 | ||
10aca0f7 KH |
74 | /* Setup foreground and background colors of GC into FG and BG. If |
75 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
76 | may be NULL. */ | |
77 | ||
c2f5bfd6 KH |
78 | static void |
79 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
80 | FRAME_PTR f; | |
81 | struct face *face; | |
82 | GC gc; | |
83 | struct xftface_info *xftface_info; | |
84 | XftColor *fg, *bg; | |
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 | ||
10aca0f7 KH |
139 | /* Return the default Font ID on frame F. The Returned Font ID is |
140 | stored in the GC of the frame F, but the font is never used. So, | |
141 | any ID is ok as long as it is valid. */ | |
c2f5bfd6 KH |
142 | |
143 | static Font | |
144 | xftfont_default_fid (f) | |
145 | FRAME_PTR f; | |
146 | { | |
147 | static int fid_known; | |
148 | static Font fid; | |
149 | ||
150 | if (! fid_known) | |
151 | { | |
152 | fid = XLoadFont (FRAME_X_DISPLAY (f), "fixed"); | |
153 | if (! fid) | |
154 | { | |
155 | fid = XLoadFont (FRAME_X_DISPLAY (f), "*"); | |
156 | if (! fid) | |
157 | abort (); | |
158 | } | |
322f8671 | 159 | fid_known = 1; |
c2f5bfd6 KH |
160 | } |
161 | return fid; | |
162 | } | |
163 | ||
164 | ||
165 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 166 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
c2f5bfd6 KH |
167 | static struct font *xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
168 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); | |
169 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
170 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
171 | static unsigned xftfont_encode_char P_ ((struct font *, int)); | |
172 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
173 | struct font_metrics *)); | |
174 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
175 | ||
176 | static int xftfont_anchor_point P_ ((struct font *, unsigned, int, | |
177 | int *, int *)); | |
a92ee6bf KH |
178 | static int xftfont_start_for_frame P_ ((FRAME_PTR f)); |
179 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); | |
c2f5bfd6 KH |
180 | |
181 | struct font_driver xftfont_driver; | |
182 | ||
183 | static Lisp_Object | |
184 | xftfont_list (frame, spec) | |
185 | Lisp_Object frame; | |
186 | Lisp_Object spec; | |
187 | { | |
188 | Lisp_Object val = ftfont_driver.list (frame, spec); | |
10aca0f7 | 189 | int i; |
c2f5bfd6 KH |
190 | |
191 | if (! NILP (val)) | |
10aca0f7 KH |
192 | for (i = 0; i < ASIZE (val); i++) |
193 | ASET (AREF (val, i), FONT_TYPE_INDEX, Qxft); | |
c2f5bfd6 KH |
194 | return val; |
195 | } | |
196 | ||
10aca0f7 KH |
197 | static Lisp_Object |
198 | xftfont_match (frame, spec) | |
199 | Lisp_Object frame; | |
200 | Lisp_Object spec; | |
201 | { | |
202 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
203 | ||
204 | if (VECTORP (entity)) | |
205 | ASET (entity, FONT_TYPE_INDEX, Qxft); | |
206 | return entity; | |
207 | } | |
208 | ||
98d12656 KH |
209 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *)); |
210 | ||
c2f5bfd6 KH |
211 | static FcChar8 ascii_printable[95]; |
212 | ||
213 | static struct font * | |
214 | xftfont_open (f, entity, pixel_size) | |
215 | FRAME_PTR f; | |
216 | Lisp_Object entity; | |
217 | int pixel_size; | |
218 | { | |
219 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
220 | Display *display = FRAME_X_DISPLAY (f); | |
221 | Lisp_Object val; | |
2d93c6bd KH |
222 | FcPattern *pattern, *pat = NULL; |
223 | FcChar8 *file; | |
224 | struct xftfont_info *xftfont_info = NULL; | |
225 | XFontStruct *xfont = NULL; | |
c2f5bfd6 KH |
226 | struct font *font; |
227 | double size = 0; | |
2d93c6bd | 228 | XftFont *xftfont = NULL; |
c2f5bfd6 | 229 | int spacing; |
2d93c6bd | 230 | char *name; |
dcce3c58 | 231 | int len; |
91c5bb27 | 232 | XGlyphInfo extents; |
c2f5bfd6 KH |
233 | |
234 | val = AREF (entity, FONT_EXTRA_INDEX); | |
235 | if (XTYPE (val) != Lisp_Misc | |
236 | || XMISCTYPE (val) != Lisp_Misc_Save_Value) | |
237 | return NULL; | |
238 | pattern = XSAVE_VALUE (val)->pointer; | |
239 | if (FcPatternGetString (pattern, FC_FILE, 0, &file) != FcResultMatch) | |
240 | return NULL; | |
241 | ||
242 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
243 | if (size == 0) | |
244 | size = pixel_size; | |
dcce3c58 | 245 | |
c2f5bfd6 KH |
246 | pat = FcPatternCreate (); |
247 | FcPatternAddString (pat, FC_FILE, file); | |
248 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); | |
fa762662 | 249 | /*FcPatternAddBool (pat, FC_ANTIALIAS, FcTrue);*/ |
3cc2aca0 KH |
250 | val = AREF (entity, FONT_FAMILY_INDEX); |
251 | if (! NILP (val)) | |
252 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
253 | FcConfigSubstitute (NULL, pat, FcMatchPattern); | |
dcce3c58 KH |
254 | |
255 | BLOCK_INPUT; | |
4f4426f9 | 256 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); |
c2f5bfd6 KH |
257 | xftfont = XftFontOpenPattern (display, pat); |
258 | /* We should not destroy PAT here because it is kept in XFTFONT and | |
259 | destroyed automatically when XFTFONT is closed. */ | |
260 | if (! xftfont) | |
2d93c6bd | 261 | goto err; |
c2f5bfd6 KH |
262 | |
263 | xftfont_info = malloc (sizeof (struct xftfont_info)); | |
264 | if (! xftfont_info) | |
2d93c6bd | 265 | goto err; |
c2f5bfd6 | 266 | xfont = malloc (sizeof (XFontStruct)); |
2d93c6bd KH |
267 | if (! xfont) |
268 | goto err; | |
c2f5bfd6 KH |
269 | xftfont_info->display = display; |
270 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
271 | xftfont_info->xftfont = xftfont; | |
272 | xftfont_info->ft_face = XftLockFace (xftfont); | |
4613015e KH |
273 | #ifdef HAVE_LIBOTF |
274 | xftfont_info->maybe_otf = xftfont_info->ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
275 | xftfont_info->otf = NULL; | |
794eba0f | 276 | #endif /* HAVE_LIBOTF */ |
c2f5bfd6 KH |
277 | |
278 | font = (struct font *) xftfont_info; | |
b2e0f618 | 279 | font->format = ftfont_font_format (xftfont->pattern); |
c2f5bfd6 KH |
280 | font->entity = entity; |
281 | font->pixel_size = size; | |
282 | font->driver = &xftfont_driver; | |
560fd3fa | 283 | len = 96; |
2d93c6bd KH |
284 | name = malloc (len); |
285 | while (name && font_unparse_fcname (entity, pixel_size, name, len) < 0) | |
286 | { | |
287 | char *new = realloc (name, len += 32); | |
288 | ||
289 | if (! new) | |
290 | free (name); | |
291 | name = new; | |
292 | } | |
293 | if (! name) | |
294 | goto err; | |
295 | font->font.full_name = font->font.name = name; | |
c2f5bfd6 KH |
296 | font->file_name = (char *) file; |
297 | font->font.size = xftfont->max_advance_width; | |
8bf90572 | 298 | font->font.charset = font->encoding_charset = font->repertory_charset = -1; |
c2f5bfd6 KH |
299 | |
300 | if (FcPatternGetInteger (xftfont->pattern, FC_SPACING, 0, &spacing) | |
301 | != FcResultMatch) | |
302 | spacing = FC_PROPORTIONAL; | |
91c5bb27 KH |
303 | if (! ascii_printable[0]) |
304 | { | |
305 | int i; | |
306 | for (i = 0; i < 95; i++) | |
307 | ascii_printable[i] = ' ' + i; | |
308 | } | |
c2f5bfd6 | 309 | if (spacing != FC_PROPORTIONAL) |
91c5bb27 KH |
310 | { |
311 | font->font.average_width = font->font.space_width | |
312 | = xftfont->max_advance_width; | |
313 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
314 | } | |
c2f5bfd6 KH |
315 | else |
316 | { | |
c2f5bfd6 KH |
317 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
318 | font->font.space_width = extents.xOff; | |
319 | if (font->font.space_width <= 0) | |
320 | /* dirty workaround */ | |
321 | font->font.space_width = pixel_size; | |
322 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
323 | font->font.average_width = (font->font.space_width + extents.xOff) / 95; | |
324 | } | |
dcce3c58 | 325 | UNBLOCK_INPUT; |
c2f5bfd6 | 326 | |
91c5bb27 KH |
327 | font->ascent = xftfont->ascent; |
328 | if (font->ascent < extents.y) | |
329 | font->ascent = extents.y; | |
330 | font->descent = xftfont->descent; | |
331 | if (font->descent < extents.height - extents.y) | |
332 | font->descent = extents.height - extents.y; | |
333 | font->font.height = font->ascent + font->descent; | |
334 | ||
c2f5bfd6 KH |
335 | /* Unfortunately Xft doesn't provide a way to get minimum char |
336 | width. So, we use space_width instead. */ | |
337 | font->min_width = font->font.space_width; | |
338 | ||
339 | font->font.baseline_offset = 0; | |
340 | font->font.relative_compose = 0; | |
341 | font->font.default_ascent = 0; | |
342 | font->font.vertical_centering = 0; | |
343 | ||
344 | /* Setup pseudo XFontStruct */ | |
345 | xfont->fid = xftfont_default_fid (f); | |
91c5bb27 KH |
346 | xfont->ascent = font->ascent; |
347 | xfont->descent = font->descent; | |
348 | xfont->max_bounds.descent = font->descent; | |
c2f5bfd6 KH |
349 | xfont->max_bounds.width = xftfont->max_advance_width; |
350 | xfont->min_bounds.width = font->font.space_width; | |
351 | font->font.font = xfont; | |
352 | ||
353 | dpyinfo->n_fonts++; | |
354 | ||
355 | /* Set global flag fonts_changed_p to non-zero if the font loaded | |
356 | has a character with a smaller width than any other character | |
357 | before, or if the font loaded has a smaller height than any other | |
358 | font loaded before. If this happens, it will make a glyph matrix | |
359 | reallocation necessary. */ | |
360 | if (dpyinfo->n_fonts == 1) | |
361 | { | |
362 | dpyinfo->smallest_font_height = font->font.height; | |
363 | dpyinfo->smallest_char_width = font->min_width; | |
364 | fonts_changed_p = 1; | |
365 | } | |
366 | else | |
367 | { | |
368 | if (dpyinfo->smallest_font_height > font->font.height) | |
369 | dpyinfo->smallest_font_height = font->font.height, | |
370 | fonts_changed_p |= 1; | |
371 | if (dpyinfo->smallest_char_width > font->min_width) | |
372 | dpyinfo->smallest_char_width = font->min_width, | |
373 | fonts_changed_p |= 1; | |
374 | } | |
375 | ||
376 | return font; | |
2d93c6bd KH |
377 | |
378 | err: | |
379 | if (xftfont) XftFontClose (display, xftfont); | |
380 | UNBLOCK_INPUT; | |
381 | if (xftfont_info) free (xftfont_info); | |
382 | if (xfont) free (xfont); | |
383 | return NULL; | |
c2f5bfd6 KH |
384 | } |
385 | ||
386 | static void | |
387 | xftfont_close (f, font) | |
388 | FRAME_PTR f; | |
389 | struct font *font; | |
390 | { | |
391 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
392 | ||
4613015e KH |
393 | #ifdef HAVE_LIBOTF |
394 | if (xftfont_info->otf) | |
395 | OTF_close (xftfont_info->otf); | |
396 | #endif | |
c2f5bfd6 KH |
397 | XftUnlockFace (xftfont_info->xftfont); |
398 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); | |
dcce3c58 KH |
399 | if (font->font.name) |
400 | free (font->font.name); | |
c2f5bfd6 KH |
401 | free (font); |
402 | FRAME_X_DISPLAY_INFO (f)->n_fonts--; | |
403 | } | |
404 | ||
c2f5bfd6 KH |
405 | static int |
406 | xftfont_prepare_face (f, face) | |
407 | FRAME_PTR f; | |
408 | struct face *face; | |
409 | { | |
e2d0c925 | 410 | struct xftface_info *xftface_info; |
c2f5bfd6 | 411 | |
a703d27d KH |
412 | #if 0 |
413 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
414 | if (face != face->ascii_face) |
415 | { | |
416 | face->extra = face->ascii_face->extra; | |
417 | return 0; | |
418 | } | |
a703d27d | 419 | #endif |
e2d0c925 KH |
420 | |
421 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
422 | if (! xftface_info) |
423 | return -1; | |
424 | ||
425 | BLOCK_INPUT; | |
c2f5bfd6 KH |
426 | xftfont_get_colors (f, face, face->gc, NULL, |
427 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
428 | UNBLOCK_INPUT; | |
429 | ||
430 | face->extra = xftface_info; | |
431 | return 0; | |
432 | } | |
433 | ||
434 | static void | |
435 | xftfont_done_face (f, face) | |
436 | FRAME_PTR f; | |
437 | struct face *face; | |
438 | { | |
e2d0c925 KH |
439 | struct xftface_info *xftface_info; |
440 | ||
a703d27d KH |
441 | #if 0 |
442 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
443 | if (face != face->ascii_face |
444 | || ! face->extra) | |
445 | return; | |
a703d27d | 446 | #endif |
c2f5bfd6 | 447 | |
e2d0c925 | 448 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
449 | if (xftface_info) |
450 | { | |
773039e8 | 451 | free (xftface_info); |
a92ee6bf | 452 | face->extra = NULL; |
773039e8 | 453 | } |
c2f5bfd6 KH |
454 | } |
455 | ||
456 | static unsigned | |
457 | xftfont_encode_char (font, c) | |
458 | struct font *font; | |
459 | int c; | |
460 | { | |
461 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
462 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
463 | (FcChar32) c); | |
464 | ||
465 | return (code ? code : 0xFFFFFFFF); | |
466 | } | |
467 | ||
468 | static int | |
469 | xftfont_text_extents (font, code, nglyphs, metrics) | |
470 | struct font *font; | |
471 | unsigned *code; | |
472 | int nglyphs; | |
473 | struct font_metrics *metrics; | |
474 | { | |
475 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
476 | XGlyphInfo extents; | |
477 | ||
478 | BLOCK_INPUT; | |
479 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
480 | &extents); | |
481 | UNBLOCK_INPUT; | |
482 | if (metrics) | |
483 | { | |
484 | metrics->lbearing = - extents.x; | |
485 | metrics->rbearing = - extents.x + extents.width; | |
486 | metrics->width = extents.xOff; | |
487 | metrics->ascent = extents.y; | |
4b848612 | 488 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
489 | } |
490 | return extents.xOff; | |
491 | } | |
492 | ||
a92ee6bf KH |
493 | static XftDraw * |
494 | xftfont_get_xft_draw (f) | |
495 | FRAME_PTR f; | |
496 | { | |
497 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver);; | |
498 | ||
499 | if (! xft_draw) | |
500 | { | |
501 | BLOCK_INPUT; | |
502 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
503 | FRAME_X_WINDOW (f), | |
504 | FRAME_X_VISUAL (f), | |
505 | FRAME_X_COLORMAP (f)); | |
506 | UNBLOCK_INPUT; | |
507 | if (! xft_draw) | |
508 | abort (); | |
509 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
510 | } | |
511 | return xft_draw; | |
512 | } | |
513 | ||
c2f5bfd6 KH |
514 | static int |
515 | xftfont_draw (s, from, to, x, y, with_background) | |
516 | struct glyph_string *s; | |
517 | int from, to, x, y, with_background; | |
518 | { | |
519 | FRAME_PTR f = s->f; | |
520 | struct face *face = s->face; | |
c78c1659 KH |
521 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font_info; |
522 | struct xftface_info *xftface_info = NULL; | |
a92ee6bf | 523 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
524 | FT_UInt *code; |
525 | XftColor fg, bg; | |
526 | XRectangle r; | |
527 | int len = to - from; | |
528 | int i; | |
529 | ||
c78c1659 | 530 | if (s->font_info == face->font_info) |
a92ee6bf | 531 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 532 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 533 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 534 | BLOCK_INPUT; |
03d198e8 KH |
535 | if (s->num_clips > 0) |
536 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
537 | else | |
538 | XftDrawSetClip (xft_draw, NULL); | |
539 | ||
c2f5bfd6 KH |
540 | if (with_background) |
541 | { | |
542 | struct font *font = (struct font *) face->font_info; | |
543 | ||
c78c1659 | 544 | XftDrawRect (xft_draw, &bg, |
c2f5bfd6 KH |
545 | x, y - face->font->ascent, s->width, font->font.height); |
546 | } | |
547 | code = alloca (sizeof (FT_UInt) * len); | |
548 | for (i = 0; i < len; i++) | |
549 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
550 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
551 | ||
c78c1659 | 552 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, |
c2f5bfd6 | 553 | x, y, code, len); |
c2f5bfd6 KH |
554 | UNBLOCK_INPUT; |
555 | ||
556 | return len; | |
557 | } | |
558 | ||
559 | static int | |
560 | xftfont_anchor_point (font, code, index, x, y) | |
561 | struct font *font; | |
562 | unsigned code; | |
563 | int index; | |
564 | int *x, *y; | |
565 | { | |
566 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
567 | FT_Face ft_face = xftfont_info->ft_face; | |
568 | ||
569 | if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0) | |
570 | return -1; | |
571 | if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) | |
572 | return -1; | |
573 | if (index >= ft_face->glyph->outline.n_points) | |
574 | return -1; | |
575 | *x = ft_face->glyph->outline.points[index].x; | |
576 | *y = ft_face->glyph->outline.points[index].y; | |
577 | return 0; | |
578 | } | |
579 | ||
a92ee6bf KH |
580 | static int |
581 | xftfont_end_for_frame (f) | |
582 | FRAME_PTR f; | |
583 | { | |
584 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); | |
585 | ||
586 | if (xft_draw) | |
587 | { | |
588 | BLOCK_INPUT; | |
589 | XftDrawDestroy (xft_draw); | |
590 | UNBLOCK_INPUT; | |
591 | font_put_frame_data (f, &xftfont_driver, NULL); | |
592 | } | |
593 | return 0; | |
594 | } | |
c2f5bfd6 | 595 | |
4613015e KH |
596 | #ifdef HAVE_LIBOTF |
597 | #ifdef HAVE_M17N_FLT | |
598 | static Lisp_Object | |
599 | xftfont_shape (lgstring) | |
600 | Lisp_Object lgstring; | |
601 | { | |
602 | struct font *font; | |
603 | struct xftfont_info *xftfont_info; | |
604 | ||
605 | CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font); | |
606 | xftfont_info = (struct xftfont_info *) font; | |
607 | if (! xftfont_info->maybe_otf) | |
608 | return Qnil; | |
609 | if (! xftfont_info->otf) | |
610 | { | |
611 | OTF *otf = OTF_open_ft_face (xftfont_info->ft_face); | |
612 | ||
613 | if (! otf || OTF_get_table (otf, "head") < 0) | |
614 | { | |
615 | if (otf) | |
616 | OTF_close (otf); | |
617 | xftfont_info->maybe_otf = 0; | |
618 | return 0; | |
619 | } | |
620 | xftfont_info->otf = otf; | |
621 | } | |
622 | ||
623 | return ftfont_shape_by_flt (lgstring, font, xftfont_info->ft_face, | |
624 | xftfont_info->otf); | |
625 | } | |
626 | #endif /* HAVE_M17N_FLT */ | |
627 | #endif /* HAVE_LIBOTF */ | |
628 | ||
c2f5bfd6 KH |
629 | void |
630 | syms_of_xftfont () | |
631 | { | |
632 | DEFSYM (Qxft, "xft"); | |
633 | ||
634 | xftfont_driver = ftfont_driver; | |
635 | xftfont_driver.type = Qxft; | |
636 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
637 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 638 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
639 | xftfont_driver.open = xftfont_open; |
640 | xftfont_driver.close = xftfont_close; | |
641 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
642 | xftfont_driver.done_face = xftfont_done_face; | |
643 | xftfont_driver.encode_char = xftfont_encode_char; | |
644 | xftfont_driver.text_extents = xftfont_text_extents; | |
645 | xftfont_driver.draw = xftfont_draw; | |
646 | xftfont_driver.anchor_point = xftfont_anchor_point; | |
a92ee6bf | 647 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
4613015e KH |
648 | #ifdef HAVE_LIBOTF |
649 | #ifdef HAVE_M17N_FLT | |
650 | xftfont_driver.shape = xftfont_shape; | |
651 | #endif /* HAVE_M17N_FLT */ | |
652 | #endif /* HAVE_LIBOTF */ | |
c2f5bfd6 KH |
653 | |
654 | register_font_driver (&xftfont_driver, NULL); | |
655 | } | |
885b7d09 MB |
656 | |
657 | /* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605 | |
658 | (do not change this comment) */ |