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Revision: 1.137
Committed: Wed Jan 23 10:57:19 2008 UTC (16 years, 4 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.136: +1 -1 lines
Log Message:
it is

File Contents

# Content
1 /*----------------------------------------------------------------------*
2 * File: rxvtfont.C
3 *----------------------------------------------------------------------*
4 * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
5 * - original version.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 *---------------------------------------------------------------------*/
21
22 #include "../config.h"
23 #include "rxvt.h"
24 #include "rxvtutil.h"
25 #include "rxvtfont.h"
26
27 #include <cstdlib>
28
29 #include <inttypes.h>
30
31 #define MAX_OVERLAP_ROMAN (8 + 2) // max. character width in 8ths of the base width
32 #define MAX_OVERLAP_ITALIC (8 + 3) // max. overlap for italic fonts
33
34 #define OVERLAP_OK(w,wcw,prop) ((w) <= ( \
35 (prop)->slant >= rxvt_fontprop::italic \
36 ? ((prop)->width * (wcw) * MAX_OVERLAP_ITALIC + 7) >> 3 \
37 : ((prop)->width * (wcw) * MAX_OVERLAP_ROMAN + 7) >> 3 \
38 ))
39
40 const struct rxvt_fallback_font {
41 codeset cs;
42 const char *name;
43 } fallback_fonts[] = {
44 { CS_ISO8859_1, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-1" },
45 { CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-15" },
46 { CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-fcd8859-15" },
47
48 #if ENCODING_EU
49 // cyrillic
50 { CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" },
51 { CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" },
52
53 { CS_ISO8859_2, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-2" },
54 { CS_ISO8859_3, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-3" },
55 { CS_ISO8859_4, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-4" },
56 { CS_ISO8859_5, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-5" },
57 { CS_ISO8859_6, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-6" },
58 { CS_ISO8859_7, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-7" },
59 { CS_ISO8859_8, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-8" },
60 { CS_ISO8859_9, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-9" },
61 { CS_ISO8859_10, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-10" },
62 { CS_ISO8859_11, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-11" },
63 { CS_ISO8859_13, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-13" },
64 { CS_ISO8859_14, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-14" },
65 { CS_ISO8859_16, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-16" },
66
67 # if XFT
68 { CS_KOI8_U, "xft::lang=ru" },
69
70 { CS_ISO8859_5, "xft::lang=ru" },
71 { CS_ISO8859_6, "xft::lang=ar" },
72 { CS_ISO8859_7, "xft::lang=el" },
73 { CS_ISO8859_8, "xft::lang=he" },
74 { CS_ISO8859_9, "xft::lang=tr" },
75 { CS_ISO8859_10, "xft::lang=se" },
76 { CS_ISO8859_11, "xft::lang=th" },
77 # endif
78 #endif
79
80 // japanese
81 #if ENCODING_JP || ENCODING_JP_EXT
82 # if XFT
83 // prefer xft for complex scripts
84 { CS_JIS0208_1990_0, "xft:Kochi Gothic:antialias=false" },
85 { CS_JIS0208_1990_0, "xft:Sazanami Mincho:antialias=false" },
86 { CS_JIS0208_1990_0, "xft:Mincho:antialias=false" },
87 { CS_JIS0208_1990_0, "xft::lang=ja:antialias=false" },
88 # endif
89 { CS_JIS0201_1976_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0201*-0" },
90 { CS_JIS0208_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0208*-0" },
91 { CS_JIS0212_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0212*-0" },
92 { CS_JIS0201_1976_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0201*-0" },
93 { CS_JIS0208_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0208*-0" },
94 { CS_JIS0212_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0212*-0" },
95 #endif
96
97 #if ENCODING_ZH || ENCODING_ZH_EXT
98 # if XFT
99 { CS_GBK_0, "xft:AR PL KaitiM GB" },
100 { CS_GBK_0, "xft:AR PL SungtiL GB" },
101 { CS_GBK_0, "xft::lang=zh" },
102 { CS_BIG5_EXT, "xft:AR PL Mingti2L Big5" },
103 { CS_BIG5_EXT, "xft:AR PL KaitiM Big5" },
104 { CS_GB2312_1980_0, "xft:AR PL KaitiM GB" },
105 { CS_GB2312_1980_0, "xft:AR PL SungtiL GB" },
106 { CS_GB2312_1980_0, "xft::lang=zh" },
107 # endif
108 { CS_GBK_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gbk*-0" },
109 { CS_BIG5, "-*-*-*-*-*-*-*-*-*-*-c-*-big5-0" },
110 { CS_BIG5_PLUS, "-*-*-*-*-*-*-*-*-*-*-c-*-big5p-0" },
111 { CS_BIG5_EXT, "-*-*-*-*-*-*-*-*-*-*-c-*-big5.eten-0" },
112 { CS_GB2312_1980_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" },
113 { CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" },
114 { CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-1" },
115 { CS_CNS11643_1992_2, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-2" },
116 { CS_CNS11643_1992_3, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-3" },
117 { CS_CNS11643_1992_4, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-4" },
118 { CS_CNS11643_1992_5, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-5" },
119 { CS_CNS11643_1992_6, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-6" },
120 { CS_CNS11643_1992_7, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-7" },
121 { CS_CNS11643_1992_F, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-f" },
122 #endif
123
124 #if ENCODING_KR
125 { CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
126 { CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
127 # if XFT
128 { CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" },
129 { CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" },
130 # endif
131 #endif
132
133 { CS_UNICODE, "-*-lucidatypewriter-*-*-*-*-*-*-*-*-m-*-iso10646-1" },
134 //{ CS_UNICODE, "-*-unifont-*-*-*-*-*-*-*-*-c-*-iso10646-1" }, // this gem of a font has actual dotted circles within the combining character glyphs.
135 #if XFT
136 { CS_UNICODE, "xft:Bitstream Vera Sans Mono:antialias=false:autohint=true" },
137 { CS_UNICODE, "xft:Courier New:antialias=false:autohint=true" },
138 { CS_UNICODE, "xft:Andale Mono:antialias=false:autohint=false" },
139 { CS_UNICODE, "xft:Arial Unicode MS:antialias=false:autohint=false" },
140
141 // FreeMono is usually uglier than x fonts, so try after the others
142 { CS_UNICODE, "xft:FreeMono:autohint=true" },
143 #endif
144
145 // generic font fallback, put this last, as many iso10646 fonts have extents
146 // specified for all glyphs in the range they cover, but most are simply empty
147 //{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-c-*-iso10646-1" },
148 //{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-m-*-iso10646-1" },
149 { CS_UNKNOWN, 0 }
150 };
151
152 // these characters are used to guess the font height and width
153 // pango uses a similar algorithm and doesn't trust the font either.
154 static uint16_t extent_test_chars[] = {
155 '0', '1', '8', 'a', 'd', 'x', 'm', 'y', 'g', 'W', 'X', '\'', '_',
156 0x00cd, 0x00d5, 0x0114, 0x0177, 0x0643, // ÍÕĔŷﻙ
157 0x304c, 0x672c, // が本
158 };
159
160 #define NUM_EXTENT_TEST_CHARS (sizeof (extent_test_chars) / sizeof (extent_test_chars[0]))
161
162 #define dTermDisplay Display *disp = term->dpy
163 #define dTermGC GC gc = term->gc
164
165 /////////////////////////////////////////////////////////////////////////////
166
167 static const char *
168 enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero)
169 {
170 uint8_t *buf = rxvt_temp_buf<uint8_t> (len);
171 uint8_t *res = buf;
172
173 while (len--)
174 {
175 uint32_t c = FROM_UNICODE (cs, *text++);
176
177 if (c == NOCHAR)
178 {
179 c = 0;
180 zero = true;
181 }
182
183 *buf++ = c;
184 }
185
186 return (const char *)res;
187 }
188
189 static const XChar2b *
190 enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero)
191 {
192 XChar2b *buf = rxvt_temp_buf<XChar2b> (len);
193 XChar2b *res = buf;
194
195 while (len--)
196 {
197 uint32_t c = FROM_UNICODE (cs, *text++);
198
199 if (c == NOCHAR)
200 {
201 c = 0;
202 zero = true;
203 }
204
205 buf->byte1 = c >> 8;
206 buf->byte2 = c;
207 buf++;
208 }
209
210 return res;
211 }
212
213 /////////////////////////////////////////////////////////////////////////////
214
215 rxvt_font::rxvt_font ()
216 : name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset)
217 {
218 }
219
220 void
221 rxvt_font::set_name (char *name)
222 {
223 if (this->name == name)
224 return;
225
226 if (this->name) free (this->name); // let the compiler optimize
227 this->name = name;
228 }
229
230 void
231 rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const
232 {
233 dTermDisplay;
234 dTermGC;
235
236 if (color == Color_bg || color == Color_transparent)
237 XClearArea (disp, d, x, y, w, h, false);
238 else if (color >= 0)
239 {
240 #if XFT
241 Picture dst;
242
243 # ifdef HAVE_BG_PIXMAP
244 if (term->bgPixmap.pixmap
245 && !term->pix_colors[color].is_opaque ()
246 && ((dst = XftDrawPicture (d))))
247 {
248 XClearArea (disp, d, x, y, w, h, false);
249
250 Picture solid_color_pict = XftDrawSrcPicture (d, &term->pix_colors[color].c);
251 XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, x, y, w, h);
252 }
253 else
254 # endif
255 XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h);
256
257 #else
258 XSetForeground (disp, gc, term->pix_colors[color]);
259 XFillRectangle (disp, d, gc, x, y, w, h);
260 #endif
261 }
262 }
263
264 /////////////////////////////////////////////////////////////////////////////
265
266 struct rxvt_font_default : rxvt_font {
267 struct rxvt_fontset *fs;
268
269 rxvt_font_default (rxvt_fontset *fs)
270 : rxvt_font ()
271 {
272 this->fs = fs;
273 }
274
275 rxvt_fontprop properties ()
276 {
277 rxvt_fontprop p;
278
279 p.width = p.height = 1;
280 p.ascent = rxvt_fontprop::unset;
281 p.weight = rxvt_fontprop::medium;
282 p.slant = rxvt_fontprop::roman;
283
284 return p;
285 }
286
287 bool load (const rxvt_fontprop &prop, bool force_prop)
288 {
289 width = 1; height = 1;
290 ascent = 1; descent = 0;
291
292 set_name (strdup ("built-in support font"));
293
294 return true;
295 }
296
297 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
298 {
299 careful = false;
300
301 if (unicode <= 0x001f)
302 return true;
303
304 if (unicode <= 0x007f)
305 return false;
306
307 if (unicode <= 0x009f)
308 return true;
309
310 #ifdef BUILTIN_GLYPHS
311 if (unicode >= 0x2500 && unicode <= 0x259f &&
312 !term->option (Opt_skipBuiltinGlyphs))
313 return true;
314 #endif
315
316 if (IS_COMPOSE (unicode))
317 return true;
318
319 switch (unicode)
320 {
321 case ZERO_WIDTH_CHAR:
322 case NOCHAR:
323 return true;
324 }
325
326 return false;
327 }
328
329 void draw (rxvt_drawable &d, int x, int y,
330 const text_t *text, int len,
331 int fg, int bg);
332 };
333
334 void
335 rxvt_font_default::draw (rxvt_drawable &d, int x, int y,
336 const text_t *text, int len,
337 int fg, int bg)
338 {
339 dTermDisplay;
340 dTermGC;
341
342 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
343
344 XSetForeground (disp, gc, term->pix_colors[fg]);
345
346 while (len)
347 {
348 #if ENABLE_COMBINING
349 compose_char *cc;
350 #endif
351 const text_t *tp = text;
352 text_t t = *tp;
353
354 while (++text, --len && *text == NOCHAR)
355 ;
356
357 int width = text - tp;
358 int fwidth = term->fwidth * width;
359
360 #ifdef BUILTIN_GLYPHS
361 if (0x2500 <= t && t <= 0x259f)
362 {
363 # include "table/linedraw.h"
364 uint16_t offs = linedraw_offs[t - 0x2500];
365 uint32_t *a = linedraw_command + (offs >> 4);
366 uint32_t *b = a + (offs & 15);
367
368 int W = fwidth;
369 int H = term->fheight;
370
371 int x_[16];
372 int y_[16];
373
374 for (int i = 0; i <= 8; i++)
375 {
376 x_[i] = x + ((W-1) * i + (i*7/8)) / 8;
377 y_[i] = y + ((H-1) * i + (i*7/8)) / 8;
378 }
379
380 x_[10] = x + (W - 1) / 2; x_[9] = x_[10] - 1; x_[11] = x_[10] + 1;
381 y_[10] = y + (H - 1) / 2; y_[9] = y_[10] - 1; y_[11] = y_[10] + 1;
382
383 XGCValues gcv;
384
385 gcv.cap_style = CapButt;
386 gcv.line_width = 0;
387 XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv);
388
389 while (a < b)
390 {
391 uint32_t command = *a++;
392
393 int op = (command >> 24) & 255;
394 int a = (command >> 20) & 15;
395 int b = (command >> 16) & 15;
396 int x1 = x_[(command >> 12) & 15];
397 int y1 = y_[(command >> 8) & 15];
398 int x2 = x_[(command >> 4) & 15];
399 int y2 = y_[(command >> 0) & 15];
400
401 switch (op)
402 {
403 case 0: // line
404 XDrawLine (disp, d, gc, x1, y1, x2, y2);
405 break;
406
407 case 1: // rectangle, possibly stippled
408 if (a)
409 {
410 static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 };
411
412 gcv.fill_style = FillStippled;
413 gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2);
414 gcv.ts_x_origin = x;
415 gcv.ts_y_origin = y;
416
417 XChangeGC (disp, gc,
418 GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
419 &gcv);
420 }
421
422 XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1);
423
424 if (a)
425 {
426 XFreePixmap (disp, gcv.stipple);
427 gcv.stipple = 0;
428 gcv.fill_style = FillSolid;
429 XChangeGC (disp, gc, GCFillStyle, &gcv);
430 }
431 break;
432 case 2: // arc
433 XDrawArc (disp, d, gc,
434 x1 - W/2, y1 - H/2, W-1, H-1,
435 (a - 1) * 90*64, (b - 1) * 90*64);
436 break;
437 }
438 }
439 }
440 #else
441 if (0)
442 ;
443 #endif
444 #if ENABLE_COMBINING
445 else if (IS_COMPOSE (t) && (cc = rxvt_composite[t]))
446 {
447 min_it (width, 2); // we only support wcwidth up to 2
448
449 text_t chrs[2];
450 chrs [1] = NOCHAR;
451
452 *chrs = cc->c1;
453 rxvt_font *f1 = (*fs)[fs->find_font (cc->c1)];
454 f1->draw (d, x, y, chrs, width, fg, bg);
455
456 if (cc->c2 != NOCHAR)
457 {
458 bool careful;
459
460 // prefer font of first character, for no good reasons
461 *chrs = cc->c2;
462 rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful)
463 ? f1
464 : (*fs)[fs->find_font (cc->c2)];
465
466 f2->draw (d, x, y, chrs, width, fg, Color_none);
467 }
468 }
469 #endif
470 else
471 switch (t)
472 {
473 case '\t':
474 case ZERO_WIDTH_CHAR:
475 case NOCHAR:
476 break;
477
478 default:
479 XDrawRectangle (disp, d, gc, x + 2, y + 2,
480 fwidth - 4, term->fheight - 4);
481 }
482
483 x += fwidth;
484 }
485 }
486
487 /////////////////////////////////////////////////////////////////////////////
488
489 struct rxvt_font_x11 : rxvt_font {
490 rxvt_font_x11 () { f = 0; }
491
492 void clear ();
493
494 rxvt_fontprop properties ();
495
496 bool load (const rxvt_fontprop &prop, bool force_prop);
497
498 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
499
500 void draw (rxvt_drawable &d, int x, int y,
501 const text_t *text, int len,
502 int fg, int bg);
503
504 bool slow; // wether this is a proportional font or has other funny characteristics
505 XFontStruct *f;
506 bool enc2b, encm;
507
508 char *get_property (XFontStruct *f, Atom property, const char *repl) const;
509 bool set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth);
510 bool set_properties (rxvt_fontprop &p, XFontStruct *f);
511 bool set_properties (rxvt_fontprop &p, const char *name);
512 };
513
514 char *
515 rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const
516 {
517 unsigned long value;
518
519 if (XGetFontProperty (f, property, &value))
520 return XGetAtomName (term->dpy, value);
521 else
522 return repl ? strdup (repl) : 0;
523 }
524
525 rxvt_fontprop
526 rxvt_font_x11::properties ()
527 {
528 rxvt_fontprop p;
529 set_properties (p, f);
530 return p;
531 }
532
533 bool
534 rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth)
535 {
536 p.width = width != rxvt_fontprop::unset ? width
537 : avgwidth ? (avgwidth + 1) / 10
538 : (height + 1) / 2;
539 p.height = height;
540 p.ascent = rxvt_fontprop::unset;
541 p.weight = *weight == 'B' || *weight == 'b' ? rxvt_fontprop::bold : rxvt_fontprop::medium;
542 p.slant = *slant == 'r' || *slant == 'R' ? rxvt_fontprop::roman : rxvt_fontprop::italic;
543
544 return true;
545 }
546
547 bool
548 rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f)
549 {
550 unsigned long height;
551
552 #if 0
553 if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height))
554 return false;
555 #else
556 height = f->ascent + f->descent;
557 #endif
558
559 unsigned long avgwidth;
560 if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth))
561 avgwidth = 0;
562
563 char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium");
564 char *slant = get_property (f, term->xa [XA_SLANT], "r");
565
566 set_properties (p, height, weight, slant, avgwidth);
567
568 free (weight);
569 free (slant);
570
571 p.ascent = f->ascent;
572
573 return true;
574 }
575
576 bool
577 rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name)
578 {
579 dTermDisplay;
580 int slashes = 0;
581 const char *comp[13];
582
583 for (const char *c = name; *c; c++)
584 if (*c == '-')
585 {
586 comp[slashes++] = c + 1;
587 if (slashes >= 13)
588 break;
589 }
590
591 /* can we short-circuit the costly XLoadQueryFont? */
592 if (slashes >= 13
593 && (*comp[ 6] >= '1' && *comp[ 6] <= '9')
594 && (*comp[11] >= '0' && *comp[11] <= '9'))
595 return set_properties (p, atoi (comp[6]), comp[2], comp[3], atoi (comp[11]));
596
597 XFontStruct *f = XLoadQueryFont (disp, name);
598
599 if (f)
600 {
601 // the font should really exist now. if not, we have a problem
602 // (e.g. if the user did xset fp rehash just when we were searching fonts).
603 // in that case, just return garbage.
604 bool ret = set_properties (p, f);
605 XFreeFont (disp, f);
606 return ret;
607 }
608 else
609 return false;
610 }
611
612 // fix the size of scalable fonts
613 static bool
614 replace_field (char **ptr, const char *name, int index, const char old, const char *replace)
615 {
616 int slashes = 0;
617 const char *field, *end;
618
619 for (const char *c = name; *c; c++)
620 if (*c == '-')
621 {
622 if (slashes == index)
623 field = c + 1;
624
625 if (slashes == index + 1)
626 end = c;
627
628 if (++slashes >= 13)
629 break;
630 }
631
632 if (slashes >= 13 && (!old || *field == old))
633 {
634 size_t len = field - name;
635 *ptr = (char *)malloc (len + strlen (replace) + strlen (end) + 1);
636 memcpy (*ptr, name, len);
637 strcpy (*ptr + len, replace);
638 strcat (*ptr, end);
639
640 return true;
641 }
642 else
643 {
644 *ptr = strdup (name);
645
646 return false;
647 }
648 }
649
650 bool
651 rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop)
652 {
653 dTermDisplay;
654
655 clear ();
656
657 char field_str[64]; // enough for 128 bits
658
659 // first morph the font if required
660 if (force_prop)
661 {
662 char *fname;
663
664 if (name[0] != '-')
665 {
666 f = XLoadQueryFont (disp, name);
667
668 if (!f)
669 return false;
670
671 char *new_name = get_property (f, XA_FONT, name);
672
673 if (new_name)
674 set_name (new_name);
675 else
676 rxvt_warn ("font '%s' has no FONT property, continuing without.", name);
677
678 XFreeFont (disp, f);
679 f = 0;
680 }
681
682 if (prop.weight != rxvt_fontprop::unset)
683 {
684 replace_field (&fname, name, 2, 0,
685 prop.weight < rxvt_fontprop::bold
686 ? "medium" : "bold");
687 set_name (fname);
688 }
689
690 if (prop.slant != rxvt_fontprop::unset)
691 {
692 replace_field (&fname, name, 3, 0,
693 prop.slant < rxvt_fontprop::italic
694 ? "r" : "i"); // TODO: handle "o"blique, too
695 set_name (fname);
696 }
697 }
698
699 sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset
700 ? 0 : prop.height);
701
702 struct font_weight {
703 char *name;
704 int diff;
705
706 void clear ()
707 {
708 name = 0;
709 diff = 0x7fffffff;
710 }
711
712 font_weight () { clear (); }
713 ~font_weight () { free (name); }
714 };
715
716 char **list;
717 int count;
718 list = XListFonts (disp, name, 4000, &count);
719
720 set_name (0);
721
722 if (!list)
723 return false;
724
725 font_weight *fonts = new font_weight[count];
726
727 for (int i = 0; i < count; i++)
728 {
729 rxvt_fontprop p;
730 char *fname;
731
732 int diff = 0;
733
734 if (replace_field (&fname, list[i], 6, '0', field_str))
735 diff += 10; // slightly penalize scalable fonts
736 else
737 {
738 free (fname);
739 if (replace_field (&fname, list[i], 11, '0', "0"))
740 diff += 300; // more heavily penalize what looks like scaled bitmap fonts
741 }
742
743 if (!set_properties (p, fname))
744 continue;
745
746 if (prop.height != rxvt_fontprop::unset
747 && p.height > prop.height) // weed out too large fonts
748 continue;
749
750 if (prop.height != rxvt_fontprop::unset) diff += (prop.height - p.height) * 128;
751 if (prop.weight != rxvt_fontprop::unset) diff += abs (prop.weight - p.weight);
752 if (prop.slant != rxvt_fontprop::unset) diff += abs (prop.slant - p.slant);
753 //if (prop.width != rxvt_fontprop::unset) diff += abs (prop.width - p.width);
754
755 fonts[i].name = fname;
756 fonts[i].diff = diff;
757 }
758
759 XFreeFontNames (list);
760
761 // this loop only iterates when the guessed font-size is too small
762 for (;;)
763 {
764 font_weight *best = fonts + count - 1;
765
766 for (font_weight *w = best; w-- > fonts; )
767 if (w->diff <= best->diff)
768 best = w;
769
770 if (!best->name
771 || !(f = XLoadQueryFont (disp, best->name)))
772 break;
773
774 set_name (best->name);
775 best->clear ();
776
777 ascent = f->ascent;
778 descent = f->descent;
779 height = ascent + descent;
780
781 if (prop.height == rxvt_fontprop::unset
782 || height <= prop.height)
783 break; // font is ready for use
784
785 // PIXEL_SIZE small enough, but real height too large
786 clear ();
787 }
788
789 delete [] fonts;
790
791 if (!f)
792 return false;
793
794 char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0);
795 char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0);
796
797 if (registry && encoding)
798 {
799 char charset[64];
800 snprintf (charset, 64, "%s-%s", registry, encoding);
801
802 cs = codeset_from_name (charset);
803 }
804 else
805 {
806 const char *charset = get_property (f, XA_FONT, 0);
807
808 if (!charset)
809 charset = name;
810
811 int count = 13;
812 while (*charset)
813 if (*charset++ == '-' && !--count)
814 break;
815
816 cs = codeset_from_name (charset);
817 }
818
819 free (registry);
820 free (encoding);
821
822 if (cs == CS_UNICODE)
823 cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font
824
825 encm = f->min_byte1 != 0 || f->max_byte1 != 0;
826 enc2b = encm || f->max_char_or_byte2 > 255;
827
828 slow = false;
829
830 #if 1 // only used for slow detection, TODO optimize
831 if (f->min_bounds.width == f->max_bounds.width || !f->per_char)
832 width = f->max_bounds.width;
833 else
834 {
835 slow = true;
836
837 int N = f->max_char_or_byte2 - f->min_char_or_byte2;
838
839 if (encm)
840 N += (f->max_byte1 - f->min_byte1)
841 * (f->max_char_or_byte2 - f->min_char_or_byte2 + 1);
842
843 while (N)
844 {
845 if (f->per_char[N].width > width)
846 width = f->per_char[N].width;
847
848 --N;
849 }
850 }
851 #endif
852
853 width = 1;
854
855 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
856 {
857 if (FROM_UNICODE (cs, *t) == NOCHAR)
858 continue;
859
860 // ignore characters we wouldn't use anyways
861 bool careful;
862 if (!has_char (*t, &prop, careful))
863 continue;
864
865 XChar2b ch = { *t >> 8, *t };
866
867 XCharStruct g;
868 int dir_ret, asc_ret, des_ret;
869 XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g);
870
871 int wcw = WCWIDTH (*t);
872 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
873
874 if (width < g.width) width = g.width;
875 }
876
877 if (cs == CS_UNKNOWN)
878 {
879 fprintf (stderr, "unable to deduce codeset, ignoring font '%s'\n", name);
880
881 clear ();
882 return false;
883 }
884
885 #if 0 // do it per-character
886 if (prop && width > prop->width)
887 {
888 clear ();
889 return false;
890 }
891 #endif
892
893 return true;
894 }
895
896 void
897 rxvt_font_x11::clear ()
898 {
899 if (f)
900 {
901 XFreeFont (term->dpy, f);
902 f = 0;
903 }
904 }
905
906 bool
907 rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
908 {
909 uint32_t ch = FROM_UNICODE (cs, unicode);
910
911 if (ch == NOCHAR)
912 return false;
913
914 /* check wether the character exists in _this_ font. horrible. */
915 XCharStruct *xcs;
916
917 if (encm)
918 {
919 unsigned char byte1 = ch >> 8;
920 unsigned char byte2 = ch & 255;
921
922 if (byte1 < f->min_byte1 || byte1 > f->max_byte1
923 || byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2)
924 return false;
925
926 if (f->per_char)
927 {
928 int D = f->max_char_or_byte2 - f->min_char_or_byte2 + 1;
929 int N = (byte1 - f->min_byte1) * D + byte2 - f->min_char_or_byte2;
930
931 xcs = f->per_char + N;
932 }
933 else
934 xcs = &f->max_bounds;
935 }
936 else
937 {
938 if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2)
939 return false;
940
941 if (f->per_char)
942 xcs = f->per_char + (ch - f->min_char_or_byte2);
943 else
944 xcs = &f->max_bounds;
945 }
946
947 if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0
948 && xcs->ascent == 0 && xcs->descent == 0)
949 return false;
950
951 if (!prop || prop->width == rxvt_fontprop::unset)
952 return true;
953
954 // check wether character overlaps previous/next character
955 int w = xcs->rbearing - xcs->lbearing;
956 int wcw = max (WCWIDTH (unicode), 1);
957
958 careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw;
959
960 if (careful && !OVERLAP_OK (w, wcw, prop))
961 return false;
962
963 return true;
964 }
965
966 void
967 rxvt_font_x11::draw (rxvt_drawable &d, int x, int y,
968 const text_t *text, int len,
969 int fg, int bg)
970 {
971 // this looks like a mess /.
972 // and it is a mess /.
973 // yet we are trying to be perfect /.
974 // but the result still isn't perfect /.
975
976 dTermDisplay;
977 dTermGC;
978
979 bool slow = this->slow
980 || width != term->fwidth
981 || height != term->fheight;
982
983 int base = ascent; // sorry, incorrect: term->fbase;
984
985 XGCValues v;
986 v.foreground = term->pix_colors[fg];
987 v.font = f->fid;
988
989 if (enc2b)
990 {
991 const XChar2b *xc = enc_xchar2b (text, len, cs, slow);
992
993 if (bg == Color_bg && !slow)
994 {
995 v.background = term->pix_colors[bg];
996 XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v);
997 XDrawImageString16 (disp, d, gc, x, y + base, xc, len);
998 }
999 else
1000 {
1001 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1002
1003 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1004
1005 if (slow)
1006 {
1007 do
1008 {
1009 if (xc->byte1 || xc->byte2)
1010 XDrawString16 (disp, d, gc, x, y + base, xc, 1);
1011
1012 x += term->fwidth;
1013 xc++; len--;
1014 }
1015 while (len);
1016 }
1017 else
1018 XDrawString16 (disp, d, gc, x, y + base, xc, len);
1019 }
1020 }
1021 else
1022 {
1023 const char *xc = enc_char (text, len, cs, slow);
1024
1025 if (bg == Color_bg && !slow)
1026 {
1027 v.background = term->pix_colors[bg];
1028 XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v);
1029 XDrawImageString (disp, d, gc, x, y + base, xc, len);
1030 }
1031 else
1032 {
1033 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1034
1035 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1036
1037 if (slow)
1038 {
1039 do
1040 {
1041 if (*xc)
1042 XDrawString (disp, d, gc, x, y + base, xc, 1);
1043
1044 x += term->fwidth;
1045 xc++; len--;
1046 }
1047 while (len);
1048 }
1049 else
1050 XDrawString (disp, d, gc, x, y + base, xc, len);
1051 }
1052 }
1053 }
1054
1055 /////////////////////////////////////////////////////////////////////////////
1056
1057 #if XFT
1058
1059 struct rxvt_font_xft : rxvt_font {
1060 rxvt_font_xft () { f = 0; }
1061
1062 void clear ();
1063
1064 rxvt_fontprop properties ();
1065
1066 bool load (const rxvt_fontprop &prop, bool force_prop);
1067
1068 void draw (rxvt_drawable &d, int x, int y,
1069 const text_t *text, int len,
1070 int fg, int bg);
1071
1072 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
1073
1074 protected:
1075 XftFont *f;
1076 };
1077
1078 void
1079 rxvt_font_xft::clear ()
1080 {
1081 if (f)
1082 {
1083 XftFontClose (term->dpy, f);
1084 f = 0;
1085 }
1086 }
1087
1088 rxvt_fontprop
1089 rxvt_font_xft::properties ()
1090 {
1091 rxvt_fontprop p;
1092
1093 FT_Face face = XftLockFace (f);
1094
1095 p.width = width;
1096 p.height = height;
1097 p.ascent = ascent;
1098 p.weight = face->style_flags & FT_STYLE_FLAG_BOLD
1099 ? rxvt_fontprop::bold : rxvt_fontprop::medium;
1100 p.slant = face->style_flags & FT_STYLE_FLAG_ITALIC
1101 ? rxvt_fontprop::italic : rxvt_fontprop::roman;
1102
1103 XftUnlockFace (f);
1104
1105 return p;
1106 }
1107
1108 bool
1109 rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop)
1110 {
1111 dTermDisplay;
1112
1113 clear ();
1114
1115 FcPattern *p = FcNameParse ((FcChar8 *) name);
1116
1117 if (!p)
1118 return false;
1119
1120 FcValue v;
1121
1122 if (prop.height != rxvt_fontprop::unset
1123 && (FcPatternGet (p, FC_PIXEL_SIZE, 0, &v) != FcResultMatch
1124 && FcPatternGet (p, FC_SIZE, 0, &v) != FcResultMatch))
1125 FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height);
1126
1127 if (prop.weight != rxvt_fontprop::unset
1128 && (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch))
1129 FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
1130
1131 if (prop.slant != rxvt_fontprop::unset
1132 && (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch))
1133 FcPatternAddInteger (p, FC_SLANT, prop.slant);
1134
1135 #if 0 // clipping unfortunately destroys our precious double-width-characters
1136 // clip width, we can't do better, or can we?
1137 if (FcPatternGet (p, FC_CHAR_WIDTH, 0, &v) != FcResultMatch)
1138 FcPatternAddInteger (p, FC_CHAR_WIDTH, prop->width);
1139 #endif
1140
1141 if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch)
1142 FcPatternAddBool (p, FC_MINSPACE, 1);
1143
1144 // store generated name so iso14755 view gives better results
1145 set_name ((char *)FcNameUnparse (p));
1146
1147 XftResult result;
1148 FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result);
1149
1150 FcPatternDestroy (p);
1151
1152 if (!match)
1153 return false;
1154
1155 int ftheight = 0;
1156 bool success = true;
1157
1158 for (;;)
1159 {
1160 f = XftFontOpenPattern (disp, FcPatternDuplicate (match));
1161
1162 if (!f)
1163 {
1164 success = false;
1165 break;
1166 }
1167
1168 FT_Face face = XftLockFace (f);
1169
1170 ascent = (face->size->metrics.ascender + 63) >> 6;
1171 descent = (-face->size->metrics.descender + 63) >> 6;
1172 height = max (ascent + descent, (face->size->metrics.height + 63) >> 6);
1173 width = 0;
1174
1175 bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE;
1176
1177 XftUnlockFace (f);
1178
1179 int glheight = height;
1180
1181 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
1182 {
1183 FcChar16 ch = *t;
1184
1185 if (cs != CS_UNICODE
1186 && ch > 0x100
1187 && FROM_UNICODE (cs, ch) == NOCHAR)
1188 continue;
1189
1190 // ignore characters we wouldn't use anyways
1191 bool careful;
1192 if (!has_char (*t, &prop, careful))
1193 continue;
1194
1195 XGlyphInfo g;
1196 XftTextExtents16 (disp, f, &ch, 1, &g);
1197
1198 g.width -= g.x;
1199
1200 int wcw = WCWIDTH (ch);
1201 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
1202
1203 if (width < g.width ) width = g.width;
1204 if (height < g.height ) height = g.height;
1205 if (glheight < g.height - g.y) glheight = g.height - g.y;
1206 }
1207
1208 if (!width)
1209 {
1210 rxvt_warn ("unable to calculate font width for '%s', ignoring.\n", name);
1211
1212 XftFontClose (disp, f);
1213 f = 0;
1214
1215 success = false;
1216 break;
1217 }
1218
1219 if (prop.height == rxvt_fontprop::unset
1220 || (height <= prop.height && glheight <= prop.height)
1221 || height <= 2
1222 || !scalable)
1223 break;
1224
1225 if (ftheight)
1226 {
1227 // take smaller steps near the end
1228 if (height > prop.height + 1) ftheight++;
1229 if (height > prop.height + 2) ftheight++;
1230 if (height > prop.height + 3) ftheight++;
1231
1232 ftheight -= height - prop.height;
1233 }
1234 else
1235 ftheight = prop.height - 1;
1236
1237 XftFontClose (disp, f);
1238 FcPatternDel (match, FC_PIXEL_SIZE);
1239 FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight);
1240 }
1241
1242 FcPatternDestroy (match);
1243
1244 #if 0 // do it per-character
1245 if (prop.width != rxvt_fontprop::unset && width > prop.width)
1246 {
1247 clear ();
1248 success = false;
1249 }
1250 #endif
1251
1252 return success;
1253 }
1254
1255 bool
1256 rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
1257 {
1258 careful = false;
1259
1260 if (!XftCharExists (term->dpy, f, unicode))
1261 return false;
1262
1263 if (!prop || prop->width == rxvt_fontprop::unset)
1264 return true;
1265
1266 // check character against base font bounding box
1267 FcChar32 ch = unicode;
1268 XGlyphInfo g;
1269 XftTextExtents32 (term->dpy, f, &ch, 1, &g);
1270
1271 int w = g.width - g.x;
1272 int wcw = max (WCWIDTH (unicode), 1);
1273
1274 careful = g.x > 0 || w > prop->width * wcw;
1275
1276 if (careful && !OVERLAP_OK (w, wcw, prop))
1277 return false;
1278
1279 // this weeds out _totally_ broken fonts, or glyphs
1280 if (!OVERLAP_OK (g.xOff, wcw, prop))
1281 return false;
1282
1283 return true;
1284 }
1285
1286 void
1287 rxvt_font_xft::draw (rxvt_drawable &d, int x, int y,
1288 const text_t *text, int len,
1289 int fg, int bg)
1290 {
1291 XGlyphInfo extents;
1292 XftGlyphSpec *enc = (XftGlyphSpec *)rxvt_temp_buf (len * sizeof (XftGlyphSpec));
1293 XftGlyphSpec *ep = enc;
1294
1295 dTermDisplay;
1296 dTermGC;
1297
1298 int w = term->fwidth * len;
1299 int h = term->fheight;
1300
1301 /*
1302 * Maybe make buffering into a resource flag? Compile time option doesn't seems like a
1303 * good idea from the perspective of packaging for wide variety of user configs.
1304 */
1305 bool buffered = bg >= Color_transparent;
1306 #ifdef FORCE_UNBUFFERED_XFT
1307 buffered = false;
1308 #endif
1309
1310 // cut trailing spaces
1311 while (len && text [len - 1] == ' ')
1312 len--;
1313
1314 int x_ = buffered ? 0 : x;
1315 int y_ = buffered ? 0 : y;
1316
1317 while (len)
1318 {
1319 int cwidth = term->fwidth;
1320 FcChar32 fc = *text++; len--;
1321
1322 while (len && *text == NOCHAR)
1323 text++, len--, cwidth += term->fwidth;
1324
1325 if (fc != ' ') // skip spaces
1326 {
1327 FT_UInt glyph = XftCharIndex (disp, f, fc);
1328 XftGlyphExtents (disp, f, &glyph, 1, &extents);
1329
1330 ep->glyph = glyph;
1331 ep->x = x_ + (cwidth - extents.xOff >> 1);
1332 ep->y = y_ + ascent;
1333
1334 if (extents.xOff == 0)
1335 ep->x = x_ + cwidth;
1336
1337 ep++;
1338 }
1339
1340 x_ += cwidth;
1341 }
1342
1343 if (buffered)
1344 {
1345 if (ep != enc)
1346 {
1347 bool back_rendered = false;
1348 rxvt_drawable &d2 = d.screen->scratch_drawable (w, h);
1349
1350 #ifdef HAVE_BG_PIXMAP
1351
1352 if (term->bgPixmap.pixmap
1353 && !(bg >= 0 && term->pix_colors[bg].is_opaque ()))
1354 {
1355 Picture dst = XftDrawPicture (d2);
1356
1357 int src_x = x, src_y = y;
1358
1359 if (term->bgPixmap.is_parentOrigin ())
1360 {
1361 src_x += term->window_vt_x;
1362 src_y += term->window_vt_y;
1363 }
1364
1365 if (term->bgPixmap.pmap_width >= src_x+w
1366 && term->bgPixmap.pmap_height >= src_y+h)
1367 {
1368 XCopyArea (disp, term->bgPixmap.pixmap, d2, gc,
1369 src_x, src_y, w, h, 0, 0);
1370 }
1371 else
1372 {
1373 XGCValues gcv;
1374
1375 gcv.fill_style = FillTiled;
1376 gcv.tile = term->bgPixmap.pixmap;
1377 gcv.ts_x_origin = -src_x;
1378 gcv.ts_y_origin = -src_y;
1379
1380 XChangeGC (disp, gc,
1381 GCTile | GCTileStipXOrigin | GCTileStipYOrigin | GCFillStyle,
1382 &gcv);
1383
1384 XFillRectangle (disp, d2, gc, 0, 0, w, h);
1385
1386 gcv.fill_style = FillSolid;
1387 XChangeGC (disp, gc, GCFillStyle, &gcv);
1388 }
1389
1390 if (bg >= 0 && dst) // colour must be (and is) non-opaque here
1391 {
1392 Picture solid_color_pict = XftDrawSrcPicture (d2, &term->pix_colors[bg].c);
1393 XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, 0, 0, w, h);
1394 }
1395
1396 back_rendered = true;
1397 }
1398 #endif
1399
1400 if (!back_rendered)
1401 XftDrawRect (d2, &term->pix_colors[bg < 0 ? Color_bg : bg].c, 0, 0, w, h);
1402
1403 XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc);
1404 XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y);
1405 }
1406 else
1407 clear_rect (d, x, y, w, h, bg);
1408 }
1409 else
1410 {
1411 clear_rect (d, x, y, w, h, bg);
1412 XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc);
1413 }
1414 }
1415
1416 #endif
1417
1418 /////////////////////////////////////////////////////////////////////////////
1419
1420 rxvt_fontset::rxvt_fontset (rxvt_term *term)
1421 : fontdesc (0), term (term)
1422 {
1423 clear ();
1424 }
1425
1426 rxvt_fontset::~rxvt_fontset ()
1427 {
1428 clear ();
1429 }
1430
1431 void
1432 rxvt_fontset::clear ()
1433 {
1434 prop.width = prop.height = prop.ascent = prop.weight = prop.slant
1435 = rxvt_fontprop::unset;
1436 force_prop = false;
1437
1438 for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++)
1439 FONT_UNREF (*i);
1440
1441 for (pagemap **p = fmap.begin (); p != fmap.end (); p++)
1442 delete *p;
1443
1444 free (fontdesc); fontdesc = 0;
1445
1446 fonts.clear ();
1447
1448 fallback = fallback_fonts;
1449 }
1450
1451 rxvt_font *
1452 rxvt_fontset::new_font (const char *name, codeset cs)
1453 {
1454 rxvt_font *f;
1455
1456 if (!name || !*name)
1457 {
1458 name = "";
1459 f = new rxvt_font_default (this);
1460 }
1461 #if XFT
1462 else if (!strncmp (name, "xft:", 4))
1463 {
1464 name += 4;
1465 f = new rxvt_font_xft ();
1466 }
1467 #endif
1468 else if (!strncmp (name, "x:", 2))
1469 {
1470 name += 2;
1471 f = new rxvt_font_x11;
1472 }
1473 else
1474 f = new rxvt_font_x11;
1475
1476 f->set_term (term);
1477 f->set_name (strdup (name));
1478
1479 f->cs = cs;
1480 f->loaded = false;
1481
1482 return f;
1483 }
1484
1485 /////////////////////////////////////////////////////////////////////////////
1486
1487 void
1488 rxvt_fontset::add_fonts (const char *desc)
1489 {
1490 if (desc)
1491 {
1492 char buf[512];
1493 const char *end;
1494
1495 do
1496 {
1497 while (*desc && *desc <= ' ')
1498 desc++;
1499
1500 codeset cs = CS_UNICODE;
1501
1502 if (*desc == '[')
1503 {
1504 char spec[256];
1505 const char *extra = ++desc; // not yet used
1506
1507 desc = strchr (desc, ']');
1508
1509 if (!desc)
1510 {
1511 rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n");
1512 break;
1513 }
1514
1515 memcpy (spec, extra, min (desc - extra, 255));
1516 spec[min (desc - extra, 255)] = 0;
1517
1518 if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1))
1519 cs = codeset_from_name (spec + sizeof ("codeset=") - 1);
1520 else
1521 rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec);
1522
1523 desc++;
1524 while (*desc <= ' ') desc++;
1525 }
1526
1527 end = strchr (desc, ',');
1528 if (!end)
1529 end = desc + strlen (desc);
1530
1531 if (end - desc < 511)
1532 {
1533 memcpy (buf, desc, end - desc);
1534 buf[end - desc] = 0;
1535
1536 fonts.push_back (new_font (buf, cs));
1537 }
1538 else
1539 rxvt_warn ("fontset element too long (>511 bytes), ignored.");
1540
1541 desc = end + 1;
1542 }
1543 while (*end);
1544 }
1545 }
1546
1547 bool
1548 rxvt_fontset::realize_font (int i)
1549 {
1550 if (i < 0 || i >= fonts.size ())
1551 return false;
1552
1553 if (fonts[i]->loaded)
1554 return true;
1555
1556 fonts[i]->loaded = true;
1557
1558 if (!fonts[i]->load (prop, force_prop))
1559 {
1560 fonts[i]->cs = CS_UNKNOWN;
1561 return false;
1562 }
1563
1564 return true;
1565 }
1566
1567 bool
1568 rxvt_fontset::populate (const char *desc)
1569 {
1570 clear ();
1571
1572 fontdesc = strdup (desc);
1573
1574 fonts.push_back (new_font (0, CS_UNICODE));
1575 realize_font (0);
1576
1577 add_fonts (desc);
1578
1579 return true;
1580 }
1581
1582 int
1583 rxvt_fontset::find_font (const char *name) const
1584 {
1585 for (rxvt_font *const *f = fonts.begin (); f < fonts.end (); f++)
1586 if ((*f)->name && !strcmp ((*f)->name, name))
1587 return f - fonts.begin ();
1588
1589 return -1;
1590 }
1591
1592 int
1593 rxvt_fontset::find_font (unicode_t unicode)
1594 {
1595 if (unicode >= 1<<20)
1596 return 0;
1597
1598 unicode_t hi = unicode >> 8;
1599
1600 if (hi < fmap.size ()
1601 && fmap[hi]
1602 && (*fmap[hi])[unicode & 0xff] != 0xff)
1603 return (*fmap[hi])[unicode & 0xff];
1604
1605 unsigned int i;
1606
1607 for (i = 0; i < fonts.size (); i++)
1608 {
1609 rxvt_font *f = fonts[i];
1610
1611 if (!f->loaded)
1612 {
1613 if (FROM_UNICODE (f->cs, unicode) == NOCHAR)
1614 goto next_font;
1615
1616 if (!realize_font (i))
1617 goto next_font;
1618
1619 if (prop.ascent != rxvt_fontprop::unset)
1620 max_it (f->ascent, prop.ascent);
1621 }
1622
1623 if (f->cs == CS_UNKNOWN)
1624 goto next_font;
1625
1626 bool careful;
1627 if (f->has_char (unicode, &prop, careful))
1628 {
1629 if (careful)
1630 i |= 128;
1631
1632 goto found;
1633 }
1634
1635 next_font:
1636 if (i == fonts.size () - 1)
1637 {
1638 if (fallback->name)
1639 {
1640 // search through the fallback list
1641 fonts.push_back (new_font (fallback->name, fallback->cs));
1642 fallback++;
1643 }
1644 else
1645 {
1646 // try to find a new font.
1647 // only xft currently supported, as there is no
1648 // way to configure this and xft is easier to hack in,
1649 // while x11 has more framework in place already.
1650 // TODO: this is a real resource hog, xft takes ages(?)
1651 #if XFT && USE_SLOW_LOOKUP
1652 // grab the first xft font that seems suitable
1653 FcPattern *p = FcPatternCreate ();
1654
1655 FcCharSet *s = FcCharSetCreate ();
1656 FcCharSetAddChar (s, unicode);
1657 FcPatternAddCharSet (p, FC_CHARSET, s);
1658 // charsets don't help that much, as xft might return
1659 // a non-matching font even if a better font is available :/
1660
1661 x x x x TODO prop might have unset contents
1662 FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height);
1663 FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
1664 FcPatternAddInteger (p, FC_SLANT, prop.slant);
1665 FcPatternAddBool (p, FC_MINSPACE, 1);
1666 //FcPatternAddBool (p, FC_ANTIALIAS, 1);
1667
1668 XftResult result;
1669 FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result);
1670
1671 FcPatternDestroy (p);
1672
1673 if (match)
1674 {
1675 FcPatternDel (match, FC_CHARSET);
1676 char *font = (char *)FcNameUnparse (match);
1677 FcPatternDestroy (match);
1678
1679 if (find_font (font) < 0)
1680 {
1681 char fontname[4096];
1682 sprintf (fontname, "xft:%-.4090s", font);
1683
1684 fonts.push_back (new_font (fontname, CS_UNICODE));
1685 }
1686
1687 free (font);
1688 }
1689 #endif
1690 }
1691 }
1692 }
1693
1694 /* we must return SOME font */
1695 i = 0;
1696
1697 found:
1698 // found a font, cache it
1699 if (i < 255)
1700 {
1701 while (hi >= fmap.size ())
1702 fmap.push_back (0);
1703
1704 if (!fmap[hi])
1705 {
1706 fmap[hi] = (pagemap *)new pagemap;
1707 memset (fmap[hi], 0xff, sizeof (pagemap));
1708 }
1709
1710 (*fmap[hi])[unicode & 0xff] = i;
1711 }
1712
1713 return i;
1714 }
1715
1716
1717