Commit | Line | Data |
---|---|---|
c2f5bfd6 | 1 | /* xftfont.c -- XFT font driver. |
77ad4cfe GM |
2 | Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008 | |
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> | |
24 | #include <X11/Xlib.h> | |
25 | #include <X11/Xft/Xft.h> | |
26 | ||
27 | #include "lisp.h" | |
28 | #include "dispextern.h" | |
29 | #include "xterm.h" | |
30 | #include "frame.h" | |
31 | #include "blockinput.h" | |
32 | #include "character.h" | |
33 | #include "charset.h" | |
34 | #include "fontset.h" | |
35 | #include "font.h" | |
4613015e | 36 | #include "ftfont.h" |
c2f5bfd6 KH |
37 | |
38 | /* Xft font driver. */ | |
39 | ||
40 | static Lisp_Object Qxft; | |
41 | ||
42 | /* The actual structure for Xft font that can be casted to struct | |
43 | font. */ | |
44 | ||
45 | struct xftfont_info | |
46 | { | |
47 | struct font font; | |
48 | Display *display; | |
49 | int screen; | |
50 | XftFont *xftfont; | |
4613015e KH |
51 | #ifdef HAVE_LIBOTF |
52 | int maybe_otf; /* Flag to tell if this may be OTF or not. */ | |
53 | OTF *otf; | |
794eba0f | 54 | #endif /* HAVE_LIBOTF */ |
c2f5bfd6 KH |
55 | }; |
56 | ||
57 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 58 | |
c2f5bfd6 KH |
59 | struct xftface_info |
60 | { | |
10aca0f7 KH |
61 | XftColor xft_fg; /* color for face->foreground */ |
62 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
63 | }; |
64 | ||
65 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
66 | struct xftface_info *, | |
67 | XftColor *fg, XftColor *bg)); | |
c2f5bfd6 KH |
68 | |
69 | ||
10aca0f7 KH |
70 | /* Setup foreground and background colors of GC into FG and BG. If |
71 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
72 | may be NULL. */ | |
73 | ||
c2f5bfd6 KH |
74 | static void |
75 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
76 | FRAME_PTR f; | |
77 | struct face *face; | |
78 | GC gc; | |
79 | struct xftface_info *xftface_info; | |
80 | XftColor *fg, *bg; | |
81 | { | |
82 | if (xftface_info && face->gc == gc) | |
83 | { | |
84 | *fg = xftface_info->xft_fg; | |
85 | if (bg) | |
86 | *bg = xftface_info->xft_bg; | |
87 | } | |
88 | else | |
89 | { | |
90 | XGCValues xgcv; | |
91 | int fg_done = 0, bg_done = 0; | |
92 | ||
93 | BLOCK_INPUT; | |
94 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
95 | GCForeground | GCBackground, &xgcv); | |
96 | if (xftface_info) | |
97 | { | |
98 | if (xgcv.foreground == face->foreground) | |
99 | *fg = xftface_info->xft_fg, fg_done = 1; | |
100 | else if (xgcv.foreground == face->background) | |
101 | *fg = xftface_info->xft_bg, fg_done = 1; | |
102 | if (! bg) | |
103 | bg_done = 1; | |
104 | else if (xgcv.background == face->background) | |
105 | *bg = xftface_info->xft_bg, bg_done = 1; | |
106 | else if (xgcv.background == face->foreground) | |
107 | *bg = xftface_info->xft_fg, bg_done = 1; | |
108 | } | |
109 | ||
110 | if (fg_done + bg_done < 2) | |
111 | { | |
112 | XColor colors[2]; | |
113 | ||
114 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
115 | if (bg) | |
116 | colors[1].pixel = bg->pixel = xgcv.background; | |
117 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
118 | bg ? 2 : 1); | |
119 | fg->color.alpha = 0xFFFF; | |
120 | fg->color.red = colors[0].red; | |
121 | fg->color.green = colors[0].green; | |
122 | fg->color.blue = colors[0].blue; | |
123 | if (bg) | |
124 | { | |
125 | bg->color.alpha = 0xFFFF; | |
126 | bg->color.red = colors[1].red; | |
127 | bg->color.green = colors[1].green; | |
128 | bg->color.blue = colors[1].blue; | |
129 | } | |
130 | } | |
131 | UNBLOCK_INPUT; | |
132 | } | |
133 | } | |
134 | ||
c2f5bfd6 KH |
135 | |
136 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 137 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
3528e709 | 138 | static Lisp_Object xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
139 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); |
140 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
141 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
142 | static unsigned xftfont_encode_char P_ ((struct font *, int)); | |
143 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
144 | struct font_metrics *)); | |
145 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
146 | ||
147 | static int xftfont_anchor_point P_ ((struct font *, unsigned, int, | |
148 | int *, int *)); | |
a92ee6bf | 149 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); |
c2f5bfd6 KH |
150 | |
151 | struct font_driver xftfont_driver; | |
152 | ||
153 | static Lisp_Object | |
154 | xftfont_list (frame, spec) | |
155 | Lisp_Object frame; | |
156 | Lisp_Object spec; | |
157 | { | |
3528e709 | 158 | Lisp_Object list = ftfont_driver.list (frame, spec), tail; |
c2f5bfd6 | 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 KH |
165 | static Lisp_Object |
166 | xftfont_match (frame, spec) | |
167 | Lisp_Object frame; | |
168 | Lisp_Object spec; | |
169 | { | |
170 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
171 | ||
3528e709 | 172 | if (! NILP (entity)) |
10aca0f7 KH |
173 | ASET (entity, FONT_TYPE_INDEX, Qxft); |
174 | return entity; | |
175 | } | |
176 | ||
98d12656 KH |
177 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *)); |
178 | ||
c2f5bfd6 KH |
179 | static FcChar8 ascii_printable[95]; |
180 | ||
3528e709 | 181 | static Lisp_Object |
c2f5bfd6 KH |
182 | xftfont_open (f, entity, pixel_size) |
183 | FRAME_PTR f; | |
184 | Lisp_Object entity; | |
185 | int pixel_size; | |
186 | { | |
c2f5bfd6 | 187 | Display *display = FRAME_X_DISPLAY (f); |
951b8112 | 188 | Lisp_Object val, filename, font_object; |
686ee703 | 189 | FcPattern *pat = NULL; |
2d93c6bd | 190 | struct xftfont_info *xftfont_info = NULL; |
c2f5bfd6 KH |
191 | struct font *font; |
192 | double size = 0; | |
2d93c6bd | 193 | XftFont *xftfont = NULL; |
c2f5bfd6 | 194 | int spacing; |
3528e709 KH |
195 | char name[256]; |
196 | int len, i; | |
91c5bb27 | 197 | XGlyphInfo extents; |
365131ac | 198 | FT_Face ft_face; |
c2f5bfd6 | 199 | |
3528e709 | 200 | val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); |
686ee703 | 201 | if (! CONSP (val)) |
3528e709 | 202 | return Qnil; |
686ee703 KH |
203 | val = XCDR (val); |
204 | filename = XCAR (val); | |
c2f5bfd6 KH |
205 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
206 | if (size == 0) | |
207 | size = pixel_size; | |
208 | pat = FcPatternCreate (); | |
686ee703 | 209 | FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename)); |
c2f5bfd6 | 210 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); |
fa762662 | 211 | /*FcPatternAddBool (pat, FC_ANTIALIAS, FcTrue);*/ |
3cc2aca0 KH |
212 | val = AREF (entity, FONT_FAMILY_INDEX); |
213 | if (! NILP (val)) | |
214 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
215 | FcConfigSubstitute (NULL, pat, FcMatchPattern); | |
dcce3c58 KH |
216 | |
217 | BLOCK_INPUT; | |
4f4426f9 | 218 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); |
c2f5bfd6 | 219 | xftfont = XftFontOpenPattern (display, pat); |
3528e709 KH |
220 | UNBLOCK_INPUT; |
221 | if (! xftfont) | |
222 | return Qnil; | |
c2f5bfd6 KH |
223 | /* We should not destroy PAT here because it is kept in XFTFONT and |
224 | destroyed automatically when XFTFONT is closed. */ | |
3528e709 KH |
225 | font_object = font_make_object (VECSIZE (struct xftfont_info)); |
226 | ASET (font_object, FONT_TYPE_INDEX, Qxft); | |
227 | for (i = 1; i < FONT_ENTITY_MAX; i++) | |
228 | ASET (font_object, i, AREF (entity, i)); | |
229 | ASET (font_object, FONT_SIZE_INDEX, make_number (size)); | |
230 | len = font_unparse_xlfd (entity, size, name, 256); | |
231 | if (len > 0) | |
232 | ASET (font_object, FONT_NAME_INDEX, make_unibyte_string (name, len)); | |
233 | len = font_unparse_fcname (entity, size, name, 256); | |
234 | if (len > 0) | |
235 | ASET (font_object, FONT_FULLNAME_INDEX, make_unibyte_string (name, len)); | |
236 | else | |
237 | ASET (font_object, FONT_FULLNAME_INDEX, | |
238 | AREF (font_object, FONT_NAME_INDEX)); | |
686ee703 KH |
239 | ASET (font_object, FONT_FILE_INDEX, filename); |
240 | ASET (font_object, FONT_FORMAT_INDEX, | |
241 | ftfont_font_format (xftfont->pattern)); | |
3528e709 KH |
242 | font = XFONT_OBJECT (font_object); |
243 | font->pixel_size = pixel_size; | |
244 | font->driver = &xftfont_driver; | |
245 | font->encoding_charset = font->repertory_charset = -1; | |
246 | ||
247 | xftfont_info = (struct xftfont_info *) font; | |
c2f5bfd6 KH |
248 | xftfont_info->display = display; |
249 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
250 | xftfont_info->xftfont = xftfont; | |
c2f5bfd6 KH |
251 | font->pixel_size = size; |
252 | font->driver = &xftfont_driver; | |
686ee703 KH |
253 | if (INTEGERP (AREF (entity, FONT_SPACING_INDEX))) |
254 | spacing = XINT (AREF (entity, FONT_SPACING_INDEX)); | |
255 | else | |
c2f5bfd6 | 256 | spacing = FC_PROPORTIONAL; |
91c5bb27 KH |
257 | if (! ascii_printable[0]) |
258 | { | |
259 | int i; | |
260 | for (i = 0; i < 95; i++) | |
261 | ascii_printable[i] = ' ' + i; | |
262 | } | |
3528e709 | 263 | BLOCK_INPUT; |
c2f5bfd6 | 264 | if (spacing != FC_PROPORTIONAL) |
91c5bb27 | 265 | { |
3528e709 | 266 | font->min_width = font->average_width = font->space_width |
91c5bb27 KH |
267 | = xftfont->max_advance_width; |
268 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
269 | } | |
c2f5bfd6 KH |
270 | else |
271 | { | |
c2f5bfd6 | 272 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
3528e709 KH |
273 | font->space_width = extents.xOff; |
274 | if (font->space_width <= 0) | |
c2f5bfd6 | 275 | /* dirty workaround */ |
3528e709 | 276 | font->space_width = pixel_size; |
c2f5bfd6 | 277 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
3528e709 | 278 | font->average_width = (font->space_width + extents.xOff) / 95; |
c2f5bfd6 | 279 | } |
dcce3c58 | 280 | UNBLOCK_INPUT; |
c2f5bfd6 | 281 | |
91c5bb27 KH |
282 | font->ascent = xftfont->ascent; |
283 | if (font->ascent < extents.y) | |
284 | font->ascent = extents.y; | |
285 | font->descent = xftfont->descent; | |
286 | if (font->descent < extents.height - extents.y) | |
287 | font->descent = extents.height - extents.y; | |
3528e709 | 288 | font->height = font->ascent + font->descent; |
91c5bb27 | 289 | |
3528e709 KH |
290 | ft_face = XftLockFace (xftfont); |
291 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) | |
c2f5bfd6 | 292 | { |
3528e709 KH |
293 | int upEM = ft_face->units_per_EM; |
294 | ||
295 | font->underline_position = -ft_face->underline_position * size / upEM; | |
296 | font->underline_thickness = -ft_face->underline_thickness * size / upEM; | |
951b8112 KH |
297 | if (font->underline_thickness > 2) |
298 | font->underline_position -= font->underline_thickness / 2; | |
c2f5bfd6 KH |
299 | } |
300 | else | |
301 | { | |
3528e709 KH |
302 | font->underline_position = -1; |
303 | font->underline_thickness = 0; | |
c2f5bfd6 | 304 | } |
3528e709 KH |
305 | #ifdef HAVE_LIBOTF |
306 | xftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
307 | xftfont_info->otf = NULL; | |
308 | #endif /* HAVE_LIBOTF */ | |
309 | XftUnlockFace (xftfont); | |
c2f5bfd6 | 310 | |
3528e709 KH |
311 | /* Unfortunately Xft doesn't provide a way to get minimum char |
312 | width. So, we use space_width instead. */ | |
313 | font->min_width = font->space_width; | |
2d93c6bd | 314 | |
3528e709 KH |
315 | font->baseline_offset = 0; |
316 | font->relative_compose = 0; | |
317 | font->default_ascent = 0; | |
318 | font->vertical_centering = 0; | |
319 | ||
320 | return font_object; | |
c2f5bfd6 KH |
321 | } |
322 | ||
323 | static void | |
324 | xftfont_close (f, font) | |
325 | FRAME_PTR f; | |
326 | struct font *font; | |
327 | { | |
328 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
329 | ||
4613015e KH |
330 | #ifdef HAVE_LIBOTF |
331 | if (xftfont_info->otf) | |
332 | OTF_close (xftfont_info->otf); | |
333 | #endif | |
3528e709 | 334 | BLOCK_INPUT; |
c2f5bfd6 | 335 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); |
3528e709 | 336 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
337 | } |
338 | ||
c2f5bfd6 KH |
339 | static int |
340 | xftfont_prepare_face (f, face) | |
341 | FRAME_PTR f; | |
342 | struct face *face; | |
343 | { | |
e2d0c925 | 344 | struct xftface_info *xftface_info; |
c2f5bfd6 | 345 | |
a703d27d KH |
346 | #if 0 |
347 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
348 | if (face != face->ascii_face) |
349 | { | |
350 | face->extra = face->ascii_face->extra; | |
351 | return 0; | |
352 | } | |
a703d27d | 353 | #endif |
e2d0c925 KH |
354 | |
355 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
356 | if (! xftface_info) |
357 | return -1; | |
c2f5bfd6 KH |
358 | xftfont_get_colors (f, face, face->gc, NULL, |
359 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
c2f5bfd6 KH |
360 | face->extra = xftface_info; |
361 | return 0; | |
362 | } | |
363 | ||
364 | static void | |
365 | xftfont_done_face (f, face) | |
366 | FRAME_PTR f; | |
367 | struct face *face; | |
368 | { | |
e2d0c925 KH |
369 | struct xftface_info *xftface_info; |
370 | ||
a703d27d KH |
371 | #if 0 |
372 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
373 | if (face != face->ascii_face |
374 | || ! face->extra) | |
375 | return; | |
a703d27d | 376 | #endif |
c2f5bfd6 | 377 | |
e2d0c925 | 378 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
379 | if (xftface_info) |
380 | { | |
773039e8 | 381 | free (xftface_info); |
a92ee6bf | 382 | face->extra = NULL; |
773039e8 | 383 | } |
c2f5bfd6 KH |
384 | } |
385 | ||
386 | static unsigned | |
387 | xftfont_encode_char (font, c) | |
388 | struct font *font; | |
389 | int c; | |
390 | { | |
391 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
392 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
393 | (FcChar32) c); | |
394 | ||
b5b2545a | 395 | return (code ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
396 | } |
397 | ||
398 | static int | |
399 | xftfont_text_extents (font, code, nglyphs, metrics) | |
400 | struct font *font; | |
401 | unsigned *code; | |
402 | int nglyphs; | |
403 | struct font_metrics *metrics; | |
404 | { | |
405 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
406 | XGlyphInfo extents; | |
407 | ||
408 | BLOCK_INPUT; | |
409 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
410 | &extents); | |
411 | UNBLOCK_INPUT; | |
412 | if (metrics) | |
413 | { | |
414 | metrics->lbearing = - extents.x; | |
415 | metrics->rbearing = - extents.x + extents.width; | |
416 | metrics->width = extents.xOff; | |
417 | metrics->ascent = extents.y; | |
4b848612 | 418 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
419 | } |
420 | return extents.xOff; | |
421 | } | |
422 | ||
a92ee6bf KH |
423 | static XftDraw * |
424 | xftfont_get_xft_draw (f) | |
425 | FRAME_PTR f; | |
426 | { | |
427 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver);; | |
428 | ||
429 | if (! xft_draw) | |
430 | { | |
431 | BLOCK_INPUT; | |
432 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
433 | FRAME_X_WINDOW (f), | |
434 | FRAME_X_VISUAL (f), | |
435 | FRAME_X_COLORMAP (f)); | |
436 | UNBLOCK_INPUT; | |
437 | if (! xft_draw) | |
438 | abort (); | |
439 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
440 | } | |
441 | return xft_draw; | |
442 | } | |
443 | ||
c2f5bfd6 KH |
444 | static int |
445 | xftfont_draw (s, from, to, x, y, with_background) | |
446 | struct glyph_string *s; | |
447 | int from, to, x, y, with_background; | |
448 | { | |
449 | FRAME_PTR f = s->f; | |
450 | struct face *face = s->face; | |
3528e709 | 451 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font; |
c78c1659 | 452 | struct xftface_info *xftface_info = NULL; |
a92ee6bf | 453 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
454 | FT_UInt *code; |
455 | XftColor fg, bg; | |
c2f5bfd6 KH |
456 | int len = to - from; |
457 | int i; | |
458 | ||
3528e709 | 459 | if (s->font == face->font) |
a92ee6bf | 460 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 461 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 462 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 463 | BLOCK_INPUT; |
03d198e8 KH |
464 | if (s->num_clips > 0) |
465 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
466 | else | |
467 | XftDrawSetClip (xft_draw, NULL); | |
468 | ||
c2f5bfd6 | 469 | if (with_background) |
3528e709 KH |
470 | XftDrawRect (xft_draw, &bg, |
471 | x, y - face->font->ascent, s->width, face->font->height); | |
c2f5bfd6 KH |
472 | code = alloca (sizeof (FT_UInt) * len); |
473 | for (i = 0; i < len; i++) | |
474 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
475 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
476 | ||
785543da KH |
477 | if (s->padding_p) |
478 | for (i = 0; i < len; i++) | |
479 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
480 | x + i, y, code + i, 1); | |
481 | else | |
482 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
483 | x, y, code, len); | |
c2f5bfd6 KH |
484 | UNBLOCK_INPUT; |
485 | ||
486 | return len; | |
487 | } | |
488 | ||
489 | static int | |
490 | xftfont_anchor_point (font, code, index, x, y) | |
491 | struct font *font; | |
492 | unsigned code; | |
493 | int index; | |
494 | int *x, *y; | |
495 | { | |
496 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
365131ac KH |
497 | FT_Face ft_face = XftLockFace (xftfont_info->xftfont); |
498 | int result; | |
c2f5bfd6 KH |
499 | |
500 | if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0) | |
365131ac KH |
501 | result = -1; |
502 | else if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) | |
503 | result = -1; | |
504 | else if (index >= ft_face->glyph->outline.n_points) | |
505 | result = -1; | |
506 | else | |
507 | { | |
508 | *x = ft_face->glyph->outline.points[index].x; | |
509 | *y = ft_face->glyph->outline.points[index].y; | |
510 | } | |
511 | XftUnlockFace (xftfont_info->xftfont); | |
512 | return result; | |
c2f5bfd6 KH |
513 | } |
514 | ||
a92ee6bf KH |
515 | static int |
516 | xftfont_end_for_frame (f) | |
517 | FRAME_PTR f; | |
518 | { | |
519 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); | |
520 | ||
521 | if (xft_draw) | |
522 | { | |
523 | BLOCK_INPUT; | |
524 | XftDrawDestroy (xft_draw); | |
525 | UNBLOCK_INPUT; | |
526 | font_put_frame_data (f, &xftfont_driver, NULL); | |
527 | } | |
528 | return 0; | |
529 | } | |
c2f5bfd6 | 530 | |
4613015e KH |
531 | #ifdef HAVE_LIBOTF |
532 | #ifdef HAVE_M17N_FLT | |
533 | static Lisp_Object | |
534 | xftfont_shape (lgstring) | |
535 | Lisp_Object lgstring; | |
536 | { | |
537 | struct font *font; | |
538 | struct xftfont_info *xftfont_info; | |
3528e709 | 539 | Lisp_Object result; |
365131ac | 540 | FT_Face ft_face; |
4613015e KH |
541 | |
542 | CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font); | |
543 | xftfont_info = (struct xftfont_info *) font; | |
544 | if (! xftfont_info->maybe_otf) | |
545 | return Qnil; | |
365131ac | 546 | ft_face = XftLockFace (xftfont_info->xftfont); |
4613015e KH |
547 | if (! xftfont_info->otf) |
548 | { | |
365131ac | 549 | OTF *otf = OTF_open_ft_face (ft_face); |
4613015e KH |
550 | |
551 | if (! otf || OTF_get_table (otf, "head") < 0) | |
552 | { | |
553 | if (otf) | |
554 | OTF_close (otf); | |
555 | xftfont_info->maybe_otf = 0; | |
365131ac | 556 | XftUnlockFace (xftfont_info->xftfont); |
3528e709 | 557 | return Qnil; |
4613015e KH |
558 | } |
559 | xftfont_info->otf = otf; | |
560 | } | |
561 | ||
365131ac KH |
562 | result = ftfont_shape_by_flt (lgstring, font, ft_face, xftfont_info->otf); |
563 | XftUnlockFace (xftfont_info->xftfont); | |
564 | return result; | |
4613015e KH |
565 | } |
566 | #endif /* HAVE_M17N_FLT */ | |
567 | #endif /* HAVE_LIBOTF */ | |
568 | ||
c2f5bfd6 KH |
569 | void |
570 | syms_of_xftfont () | |
571 | { | |
572 | DEFSYM (Qxft, "xft"); | |
573 | ||
574 | xftfont_driver = ftfont_driver; | |
575 | xftfont_driver.type = Qxft; | |
576 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
577 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 578 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
579 | xftfont_driver.open = xftfont_open; |
580 | xftfont_driver.close = xftfont_close; | |
581 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
582 | xftfont_driver.done_face = xftfont_done_face; | |
583 | xftfont_driver.encode_char = xftfont_encode_char; | |
584 | xftfont_driver.text_extents = xftfont_text_extents; | |
585 | xftfont_driver.draw = xftfont_draw; | |
586 | xftfont_driver.anchor_point = xftfont_anchor_point; | |
a92ee6bf | 587 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
4613015e KH |
588 | #ifdef HAVE_LIBOTF |
589 | #ifdef HAVE_M17N_FLT | |
590 | xftfont_driver.shape = xftfont_shape; | |
591 | #endif /* HAVE_M17N_FLT */ | |
592 | #endif /* HAVE_LIBOTF */ | |
c2f5bfd6 KH |
593 | |
594 | register_font_driver (&xftfont_driver, NULL); | |
595 | } | |
885b7d09 MB |
596 | |
597 | /* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605 | |
598 | (do not change this comment) */ |