Commit | Line | Data |
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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 | ||
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 | |
77ad4cfe | 11 | the Free Software Foundation; either version 3, or (at your option) |
c2f5bfd6 KH |
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 | #ifdef HAVE_LIBOTF |
54 | int maybe_otf; /* Flag to tell if this may be OTF or not. */ | |
55 | OTF *otf; | |
794eba0f | 56 | #endif /* HAVE_LIBOTF */ |
c2f5bfd6 KH |
57 | }; |
58 | ||
59 | /* Structure pointed by (struct face *)->extra */ | |
10aca0f7 | 60 | |
c2f5bfd6 KH |
61 | struct xftface_info |
62 | { | |
10aca0f7 KH |
63 | XftColor xft_fg; /* color for face->foreground */ |
64 | XftColor xft_bg; /* color for face->background */ | |
c2f5bfd6 KH |
65 | }; |
66 | ||
67 | static void xftfont_get_colors P_ ((FRAME_PTR, struct face *, GC gc, | |
68 | struct xftface_info *, | |
69 | XftColor *fg, XftColor *bg)); | |
c2f5bfd6 KH |
70 | |
71 | ||
10aca0f7 KH |
72 | /* Setup foreground and background colors of GC into FG and BG. If |
73 | XFTFACE_INFO is not NULL, reuse the colors in it if possible. BG | |
74 | may be NULL. */ | |
75 | ||
c2f5bfd6 KH |
76 | static void |
77 | xftfont_get_colors (f, face, gc, xftface_info, fg, bg) | |
78 | FRAME_PTR f; | |
79 | struct face *face; | |
80 | GC gc; | |
81 | struct xftface_info *xftface_info; | |
82 | XftColor *fg, *bg; | |
83 | { | |
84 | if (xftface_info && face->gc == gc) | |
85 | { | |
86 | *fg = xftface_info->xft_fg; | |
87 | if (bg) | |
88 | *bg = xftface_info->xft_bg; | |
89 | } | |
90 | else | |
91 | { | |
92 | XGCValues xgcv; | |
93 | int fg_done = 0, bg_done = 0; | |
94 | ||
95 | BLOCK_INPUT; | |
96 | XGetGCValues (FRAME_X_DISPLAY (f), gc, | |
97 | GCForeground | GCBackground, &xgcv); | |
98 | if (xftface_info) | |
99 | { | |
100 | if (xgcv.foreground == face->foreground) | |
101 | *fg = xftface_info->xft_fg, fg_done = 1; | |
102 | else if (xgcv.foreground == face->background) | |
103 | *fg = xftface_info->xft_bg, fg_done = 1; | |
104 | if (! bg) | |
105 | bg_done = 1; | |
106 | else if (xgcv.background == face->background) | |
107 | *bg = xftface_info->xft_bg, bg_done = 1; | |
108 | else if (xgcv.background == face->foreground) | |
109 | *bg = xftface_info->xft_fg, bg_done = 1; | |
110 | } | |
111 | ||
112 | if (fg_done + bg_done < 2) | |
113 | { | |
114 | XColor colors[2]; | |
115 | ||
116 | colors[0].pixel = fg->pixel = xgcv.foreground; | |
117 | if (bg) | |
118 | colors[1].pixel = bg->pixel = xgcv.background; | |
119 | XQueryColors (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), colors, | |
120 | bg ? 2 : 1); | |
121 | fg->color.alpha = 0xFFFF; | |
122 | fg->color.red = colors[0].red; | |
123 | fg->color.green = colors[0].green; | |
124 | fg->color.blue = colors[0].blue; | |
125 | if (bg) | |
126 | { | |
127 | bg->color.alpha = 0xFFFF; | |
128 | bg->color.red = colors[1].red; | |
129 | bg->color.green = colors[1].green; | |
130 | bg->color.blue = colors[1].blue; | |
131 | } | |
132 | } | |
133 | UNBLOCK_INPUT; | |
134 | } | |
135 | } | |
136 | ||
c2f5bfd6 KH |
137 | |
138 | static Lisp_Object xftfont_list P_ ((Lisp_Object, Lisp_Object)); | |
10aca0f7 | 139 | static Lisp_Object xftfont_match P_ ((Lisp_Object, Lisp_Object)); |
3528e709 | 140 | static Lisp_Object xftfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
141 | static void xftfont_close P_ ((FRAME_PTR, struct font *)); |
142 | static int xftfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
143 | static void xftfont_done_face P_ ((FRAME_PTR, struct face *)); | |
144 | static unsigned xftfont_encode_char P_ ((struct font *, int)); | |
145 | static int xftfont_text_extents P_ ((struct font *, unsigned *, int, | |
146 | struct font_metrics *)); | |
147 | static int xftfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
148 | ||
149 | static int xftfont_anchor_point P_ ((struct font *, unsigned, int, | |
150 | int *, int *)); | |
a92ee6bf | 151 | static int xftfont_end_for_frame P_ ((FRAME_PTR f)); |
c2f5bfd6 KH |
152 | |
153 | struct font_driver xftfont_driver; | |
154 | ||
155 | static Lisp_Object | |
156 | xftfont_list (frame, spec) | |
157 | Lisp_Object frame; | |
158 | Lisp_Object spec; | |
159 | { | |
3528e709 | 160 | Lisp_Object list = ftfont_driver.list (frame, spec), tail; |
10aca0f7 | 161 | int i; |
c2f5bfd6 | 162 | |
3528e709 KH |
163 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
164 | ASET (XCAR (tail), FONT_TYPE_INDEX, Qxft); | |
165 | return list; | |
c2f5bfd6 KH |
166 | } |
167 | ||
10aca0f7 KH |
168 | static Lisp_Object |
169 | xftfont_match (frame, spec) | |
170 | Lisp_Object frame; | |
171 | Lisp_Object spec; | |
172 | { | |
173 | Lisp_Object entity = ftfont_driver.match (frame, spec); | |
174 | ||
3528e709 | 175 | if (! NILP (entity)) |
10aca0f7 KH |
176 | ASET (entity, FONT_TYPE_INDEX, Qxft); |
177 | return entity; | |
178 | } | |
179 | ||
98d12656 KH |
180 | extern Lisp_Object ftfont_font_format P_ ((FcPattern *)); |
181 | ||
c2f5bfd6 KH |
182 | static FcChar8 ascii_printable[95]; |
183 | ||
3528e709 | 184 | static Lisp_Object |
c2f5bfd6 KH |
185 | xftfont_open (f, entity, pixel_size) |
186 | FRAME_PTR f; | |
187 | Lisp_Object entity; | |
188 | int pixel_size; | |
189 | { | |
190 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
191 | Display *display = FRAME_X_DISPLAY (f); | |
3528e709 | 192 | Lisp_Object val, font_object; |
2d93c6bd KH |
193 | FcPattern *pattern, *pat = NULL; |
194 | FcChar8 *file; | |
195 | struct xftfont_info *xftfont_info = NULL; | |
196 | XFontStruct *xfont = NULL; | |
c2f5bfd6 KH |
197 | struct font *font; |
198 | double size = 0; | |
2d93c6bd | 199 | XftFont *xftfont = NULL; |
c2f5bfd6 | 200 | int spacing; |
3528e709 KH |
201 | char name[256]; |
202 | int len, i; | |
91c5bb27 | 203 | XGlyphInfo extents; |
365131ac | 204 | FT_Face ft_face; |
c2f5bfd6 | 205 | |
3528e709 KH |
206 | val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); |
207 | if (! CONSP (val) | |
208 | || XTYPE (XCDR (val)) != Lisp_Misc | |
209 | || XMISCTYPE (XCDR (val)) != Lisp_Misc_Save_Value) | |
210 | return Qnil; | |
211 | pattern = XSAVE_VALUE (XCDR (val))->pointer; | |
c2f5bfd6 | 212 | if (FcPatternGetString (pattern, FC_FILE, 0, &file) != FcResultMatch) |
3528e709 | 213 | return Qnil; |
c2f5bfd6 KH |
214 | |
215 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
216 | if (size == 0) | |
217 | size = pixel_size; | |
dcce3c58 | 218 | |
c2f5bfd6 KH |
219 | pat = FcPatternCreate (); |
220 | FcPatternAddString (pat, FC_FILE, file); | |
221 | FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); | |
fa762662 | 222 | /*FcPatternAddBool (pat, FC_ANTIALIAS, FcTrue);*/ |
3cc2aca0 KH |
223 | val = AREF (entity, FONT_FAMILY_INDEX); |
224 | if (! NILP (val)) | |
225 | FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); | |
226 | FcConfigSubstitute (NULL, pat, FcMatchPattern); | |
dcce3c58 KH |
227 | |
228 | BLOCK_INPUT; | |
4f4426f9 | 229 | XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); |
c2f5bfd6 | 230 | xftfont = XftFontOpenPattern (display, pat); |
3528e709 KH |
231 | UNBLOCK_INPUT; |
232 | if (! xftfont) | |
233 | return Qnil; | |
c2f5bfd6 KH |
234 | /* We should not destroy PAT here because it is kept in XFTFONT and |
235 | destroyed automatically when XFTFONT is closed. */ | |
3528e709 KH |
236 | font_object = font_make_object (VECSIZE (struct xftfont_info)); |
237 | ASET (font_object, FONT_TYPE_INDEX, Qxft); | |
238 | for (i = 1; i < FONT_ENTITY_MAX; i++) | |
239 | ASET (font_object, i, AREF (entity, i)); | |
240 | ASET (font_object, FONT_SIZE_INDEX, make_number (size)); | |
241 | len = font_unparse_xlfd (entity, size, name, 256); | |
242 | if (len > 0) | |
243 | ASET (font_object, FONT_NAME_INDEX, make_unibyte_string (name, len)); | |
244 | len = font_unparse_fcname (entity, size, name, 256); | |
245 | if (len > 0) | |
246 | ASET (font_object, FONT_FULLNAME_INDEX, make_unibyte_string (name, len)); | |
247 | else | |
248 | ASET (font_object, FONT_FULLNAME_INDEX, | |
249 | AREF (font_object, FONT_NAME_INDEX)); | |
250 | ASET (font_object, FONT_FILE_INDEX, | |
251 | make_unibyte_string ((char *) file, strlen ((char *) file))); | |
252 | ASET (font_object, FONT_FORMAT_INDEX, ftfont_font_format (pattern)); | |
253 | font = XFONT_OBJECT (font_object); | |
254 | font->pixel_size = pixel_size; | |
255 | font->driver = &xftfont_driver; | |
256 | font->encoding_charset = font->repertory_charset = -1; | |
257 | ||
258 | xftfont_info = (struct xftfont_info *) font; | |
c2f5bfd6 KH |
259 | xftfont_info->display = display; |
260 | xftfont_info->screen = FRAME_X_SCREEN_NUMBER (f); | |
261 | xftfont_info->xftfont = xftfont; | |
c2f5bfd6 KH |
262 | font->pixel_size = size; |
263 | font->driver = &xftfont_driver; | |
c2f5bfd6 KH |
264 | if (FcPatternGetInteger (xftfont->pattern, FC_SPACING, 0, &spacing) |
265 | != FcResultMatch) | |
266 | spacing = FC_PROPORTIONAL; | |
91c5bb27 KH |
267 | if (! ascii_printable[0]) |
268 | { | |
269 | int i; | |
270 | for (i = 0; i < 95; i++) | |
271 | ascii_printable[i] = ' ' + i; | |
272 | } | |
3528e709 | 273 | BLOCK_INPUT; |
c2f5bfd6 | 274 | if (spacing != FC_PROPORTIONAL) |
91c5bb27 | 275 | { |
3528e709 | 276 | font->min_width = font->average_width = font->space_width |
91c5bb27 KH |
277 | = xftfont->max_advance_width; |
278 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); | |
279 | } | |
c2f5bfd6 KH |
280 | else |
281 | { | |
c2f5bfd6 | 282 | XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); |
3528e709 KH |
283 | font->space_width = extents.xOff; |
284 | if (font->space_width <= 0) | |
c2f5bfd6 | 285 | /* dirty workaround */ |
3528e709 | 286 | font->space_width = pixel_size; |
c2f5bfd6 | 287 | XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); |
3528e709 | 288 | font->average_width = (font->space_width + extents.xOff) / 95; |
c2f5bfd6 | 289 | } |
dcce3c58 | 290 | UNBLOCK_INPUT; |
c2f5bfd6 | 291 | |
91c5bb27 KH |
292 | font->ascent = xftfont->ascent; |
293 | if (font->ascent < extents.y) | |
294 | font->ascent = extents.y; | |
295 | font->descent = xftfont->descent; | |
296 | if (font->descent < extents.height - extents.y) | |
297 | font->descent = extents.height - extents.y; | |
3528e709 | 298 | font->height = font->ascent + font->descent; |
91c5bb27 | 299 | |
3528e709 KH |
300 | ft_face = XftLockFace (xftfont); |
301 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) | |
c2f5bfd6 | 302 | { |
3528e709 KH |
303 | int upEM = ft_face->units_per_EM; |
304 | ||
305 | font->underline_position = -ft_face->underline_position * size / upEM; | |
306 | font->underline_thickness = -ft_face->underline_thickness * size / upEM; | |
c2f5bfd6 KH |
307 | } |
308 | else | |
309 | { | |
3528e709 KH |
310 | font->underline_position = -1; |
311 | font->underline_thickness = 0; | |
c2f5bfd6 | 312 | } |
3528e709 KH |
313 | #ifdef HAVE_LIBOTF |
314 | xftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT; | |
315 | xftfont_info->otf = NULL; | |
316 | #endif /* HAVE_LIBOTF */ | |
317 | XftUnlockFace (xftfont); | |
c2f5bfd6 | 318 | |
3528e709 KH |
319 | /* Unfortunately Xft doesn't provide a way to get minimum char |
320 | width. So, we use space_width instead. */ | |
321 | font->min_width = font->space_width; | |
2d93c6bd | 322 | |
3528e709 KH |
323 | font->baseline_offset = 0; |
324 | font->relative_compose = 0; | |
325 | font->default_ascent = 0; | |
326 | font->vertical_centering = 0; | |
327 | ||
328 | return font_object; | |
c2f5bfd6 KH |
329 | } |
330 | ||
331 | static void | |
332 | xftfont_close (f, font) | |
333 | FRAME_PTR f; | |
334 | struct font *font; | |
335 | { | |
336 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
337 | ||
4613015e KH |
338 | #ifdef HAVE_LIBOTF |
339 | if (xftfont_info->otf) | |
340 | OTF_close (xftfont_info->otf); | |
341 | #endif | |
3528e709 | 342 | BLOCK_INPUT; |
c2f5bfd6 | 343 | XftFontClose (xftfont_info->display, xftfont_info->xftfont); |
3528e709 | 344 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
345 | } |
346 | ||
c2f5bfd6 KH |
347 | static int |
348 | xftfont_prepare_face (f, face) | |
349 | FRAME_PTR f; | |
350 | struct face *face; | |
351 | { | |
e2d0c925 | 352 | struct xftface_info *xftface_info; |
c2f5bfd6 | 353 | |
a703d27d KH |
354 | #if 0 |
355 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
356 | if (face != face->ascii_face) |
357 | { | |
358 | face->extra = face->ascii_face->extra; | |
359 | return 0; | |
360 | } | |
a703d27d | 361 | #endif |
e2d0c925 KH |
362 | |
363 | xftface_info = malloc (sizeof (struct xftface_info)); | |
c2f5bfd6 KH |
364 | if (! xftface_info) |
365 | return -1; | |
c2f5bfd6 KH |
366 | xftfont_get_colors (f, face, face->gc, NULL, |
367 | &xftface_info->xft_fg, &xftface_info->xft_bg); | |
c2f5bfd6 KH |
368 | face->extra = xftface_info; |
369 | return 0; | |
370 | } | |
371 | ||
372 | static void | |
373 | xftfont_done_face (f, face) | |
374 | FRAME_PTR f; | |
375 | struct face *face; | |
376 | { | |
e2d0c925 KH |
377 | struct xftface_info *xftface_info; |
378 | ||
a703d27d KH |
379 | #if 0 |
380 | /* This doesn't work if face->ascii_face doesn't use an Xft font. */ | |
e2d0c925 KH |
381 | if (face != face->ascii_face |
382 | || ! face->extra) | |
383 | return; | |
a703d27d | 384 | #endif |
c2f5bfd6 | 385 | |
e2d0c925 | 386 | xftface_info = (struct xftface_info *) face->extra; |
773039e8 JD |
387 | if (xftface_info) |
388 | { | |
773039e8 | 389 | free (xftface_info); |
a92ee6bf | 390 | face->extra = NULL; |
773039e8 | 391 | } |
c2f5bfd6 KH |
392 | } |
393 | ||
394 | static unsigned | |
395 | xftfont_encode_char (font, c) | |
396 | struct font *font; | |
397 | int c; | |
398 | { | |
399 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
400 | unsigned code = XftCharIndex (xftfont_info->display, xftfont_info->xftfont, | |
401 | (FcChar32) c); | |
402 | ||
b5b2545a | 403 | return (code ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
404 | } |
405 | ||
406 | static int | |
407 | xftfont_text_extents (font, code, nglyphs, metrics) | |
408 | struct font *font; | |
409 | unsigned *code; | |
410 | int nglyphs; | |
411 | struct font_metrics *metrics; | |
412 | { | |
413 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
414 | XGlyphInfo extents; | |
415 | ||
416 | BLOCK_INPUT; | |
417 | XftGlyphExtents (xftfont_info->display, xftfont_info->xftfont, code, nglyphs, | |
418 | &extents); | |
419 | UNBLOCK_INPUT; | |
420 | if (metrics) | |
421 | { | |
422 | metrics->lbearing = - extents.x; | |
423 | metrics->rbearing = - extents.x + extents.width; | |
424 | metrics->width = extents.xOff; | |
425 | metrics->ascent = extents.y; | |
4b848612 | 426 | metrics->descent = extents.height - extents.y; |
c2f5bfd6 KH |
427 | } |
428 | return extents.xOff; | |
429 | } | |
430 | ||
a92ee6bf KH |
431 | static XftDraw * |
432 | xftfont_get_xft_draw (f) | |
433 | FRAME_PTR f; | |
434 | { | |
435 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver);; | |
436 | ||
437 | if (! xft_draw) | |
438 | { | |
439 | BLOCK_INPUT; | |
440 | xft_draw= XftDrawCreate (FRAME_X_DISPLAY (f), | |
441 | FRAME_X_WINDOW (f), | |
442 | FRAME_X_VISUAL (f), | |
443 | FRAME_X_COLORMAP (f)); | |
444 | UNBLOCK_INPUT; | |
445 | if (! xft_draw) | |
446 | abort (); | |
447 | font_put_frame_data (f, &xftfont_driver, xft_draw); | |
448 | } | |
449 | return xft_draw; | |
450 | } | |
451 | ||
c2f5bfd6 KH |
452 | static int |
453 | xftfont_draw (s, from, to, x, y, with_background) | |
454 | struct glyph_string *s; | |
455 | int from, to, x, y, with_background; | |
456 | { | |
457 | FRAME_PTR f = s->f; | |
458 | struct face *face = s->face; | |
3528e709 | 459 | struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font; |
c78c1659 | 460 | struct xftface_info *xftface_info = NULL; |
a92ee6bf | 461 | XftDraw *xft_draw = xftfont_get_xft_draw (f); |
c2f5bfd6 KH |
462 | FT_UInt *code; |
463 | XftColor fg, bg; | |
464 | XRectangle r; | |
465 | int len = to - from; | |
466 | int i; | |
467 | ||
3528e709 | 468 | if (s->font == face->font) |
a92ee6bf | 469 | xftface_info = (struct xftface_info *) face->extra; |
c2f5bfd6 | 470 | xftfont_get_colors (f, face, s->gc, xftface_info, |
322f8671 | 471 | &fg, with_background ? &bg : NULL); |
c2f5bfd6 | 472 | BLOCK_INPUT; |
03d198e8 KH |
473 | if (s->num_clips > 0) |
474 | XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips); | |
475 | else | |
476 | XftDrawSetClip (xft_draw, NULL); | |
477 | ||
c2f5bfd6 | 478 | if (with_background) |
3528e709 KH |
479 | XftDrawRect (xft_draw, &bg, |
480 | x, y - face->font->ascent, s->width, face->font->height); | |
c2f5bfd6 KH |
481 | code = alloca (sizeof (FT_UInt) * len); |
482 | for (i = 0; i < len; i++) | |
483 | code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8) | |
484 | | XCHAR2B_BYTE2 (s->char2b + from + i)); | |
485 | ||
785543da KH |
486 | if (s->padding_p) |
487 | for (i = 0; i < len; i++) | |
488 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
489 | x + i, y, code + i, 1); | |
490 | else | |
491 | XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont, | |
492 | x, y, code, len); | |
c2f5bfd6 KH |
493 | UNBLOCK_INPUT; |
494 | ||
495 | return len; | |
496 | } | |
497 | ||
498 | static int | |
499 | xftfont_anchor_point (font, code, index, x, y) | |
500 | struct font *font; | |
501 | unsigned code; | |
502 | int index; | |
503 | int *x, *y; | |
504 | { | |
505 | struct xftfont_info *xftfont_info = (struct xftfont_info *) font; | |
365131ac KH |
506 | FT_Face ft_face = XftLockFace (xftfont_info->xftfont); |
507 | int result; | |
c2f5bfd6 KH |
508 | |
509 | if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0) | |
365131ac KH |
510 | result = -1; |
511 | else if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) | |
512 | result = -1; | |
513 | else if (index >= ft_face->glyph->outline.n_points) | |
514 | result = -1; | |
515 | else | |
516 | { | |
517 | *x = ft_face->glyph->outline.points[index].x; | |
518 | *y = ft_face->glyph->outline.points[index].y; | |
519 | } | |
520 | XftUnlockFace (xftfont_info->xftfont); | |
521 | return result; | |
c2f5bfd6 KH |
522 | } |
523 | ||
a92ee6bf KH |
524 | static int |
525 | xftfont_end_for_frame (f) | |
526 | FRAME_PTR f; | |
527 | { | |
528 | XftDraw *xft_draw = font_get_frame_data (f, &xftfont_driver); | |
529 | ||
530 | if (xft_draw) | |
531 | { | |
532 | BLOCK_INPUT; | |
533 | XftDrawDestroy (xft_draw); | |
534 | UNBLOCK_INPUT; | |
535 | font_put_frame_data (f, &xftfont_driver, NULL); | |
536 | } | |
537 | return 0; | |
538 | } | |
c2f5bfd6 | 539 | |
4613015e KH |
540 | #ifdef HAVE_LIBOTF |
541 | #ifdef HAVE_M17N_FLT | |
542 | static Lisp_Object | |
543 | xftfont_shape (lgstring) | |
544 | Lisp_Object lgstring; | |
545 | { | |
546 | struct font *font; | |
547 | struct xftfont_info *xftfont_info; | |
3528e709 | 548 | Lisp_Object result; |
365131ac | 549 | FT_Face ft_face; |
4613015e KH |
550 | |
551 | CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font); | |
552 | xftfont_info = (struct xftfont_info *) font; | |
553 | if (! xftfont_info->maybe_otf) | |
554 | return Qnil; | |
365131ac | 555 | ft_face = XftLockFace (xftfont_info->xftfont); |
4613015e KH |
556 | if (! xftfont_info->otf) |
557 | { | |
365131ac | 558 | OTF *otf = OTF_open_ft_face (ft_face); |
4613015e KH |
559 | |
560 | if (! otf || OTF_get_table (otf, "head") < 0) | |
561 | { | |
562 | if (otf) | |
563 | OTF_close (otf); | |
564 | xftfont_info->maybe_otf = 0; | |
365131ac | 565 | XftUnlockFace (xftfont_info->xftfont); |
3528e709 | 566 | return Qnil; |
4613015e KH |
567 | } |
568 | xftfont_info->otf = otf; | |
569 | } | |
570 | ||
365131ac KH |
571 | result = ftfont_shape_by_flt (lgstring, font, ft_face, xftfont_info->otf); |
572 | XftUnlockFace (xftfont_info->xftfont); | |
573 | return result; | |
4613015e KH |
574 | } |
575 | #endif /* HAVE_M17N_FLT */ | |
576 | #endif /* HAVE_LIBOTF */ | |
577 | ||
c2f5bfd6 KH |
578 | void |
579 | syms_of_xftfont () | |
580 | { | |
581 | DEFSYM (Qxft, "xft"); | |
582 | ||
583 | xftfont_driver = ftfont_driver; | |
584 | xftfont_driver.type = Qxft; | |
585 | xftfont_driver.get_cache = xfont_driver.get_cache; | |
586 | xftfont_driver.list = xftfont_list; | |
10aca0f7 | 587 | xftfont_driver.match = xftfont_match; |
c2f5bfd6 KH |
588 | xftfont_driver.open = xftfont_open; |
589 | xftfont_driver.close = xftfont_close; | |
590 | xftfont_driver.prepare_face = xftfont_prepare_face; | |
591 | xftfont_driver.done_face = xftfont_done_face; | |
592 | xftfont_driver.encode_char = xftfont_encode_char; | |
593 | xftfont_driver.text_extents = xftfont_text_extents; | |
594 | xftfont_driver.draw = xftfont_draw; | |
595 | xftfont_driver.anchor_point = xftfont_anchor_point; | |
a92ee6bf | 596 | xftfont_driver.end_for_frame = xftfont_end_for_frame; |
4613015e KH |
597 | #ifdef HAVE_LIBOTF |
598 | #ifdef HAVE_M17N_FLT | |
599 | xftfont_driver.shape = xftfont_shape; | |
600 | #endif /* HAVE_M17N_FLT */ | |
601 | #endif /* HAVE_LIBOTF */ | |
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) */ |