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 "rxvtlib.h" |
25 |
#include "rxvtutil.h" |
26 |
#include "rxvtfont.h" |
27 |
|
28 |
#include <cstdlib> |
29 |
|
30 |
#include <inttypes.h> |
31 |
|
32 |
#define MAX_OVERLAP_ROMAN (8 + 2) // max. character width in 8ths of the base width |
33 |
#define MAX_OVERLAP_ITALIC (8 + 3) // max. overlap for italic fonts |
34 |
|
35 |
#define OVERLAP_OK(w,wcw,prop) ((w) <= ( \ |
36 |
(prop)->slant >= rxvt_fontprop::italic \ |
37 |
? ((prop)->width * (wcw) * MAX_OVERLAP_ITALIC + 7) >> 3 \ |
38 |
: ((prop)->width * (wcw) * MAX_OVERLAP_ROMAN + 7) >> 3 \ |
39 |
)) |
40 |
|
41 |
const struct rxvt_fallback_font { |
42 |
codeset cs; |
43 |
const char *name; |
44 |
} fallback_fonts[] = { |
45 |
{ CS_ISO8859_1, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-1" }, |
46 |
{ CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-15" }, |
47 |
{ CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-fcd8859-15" }, |
48 |
|
49 |
#if ENCODING_EU |
50 |
// cyrillic |
51 |
{ CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" }, |
52 |
{ CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" }, |
53 |
|
54 |
{ CS_ISO8859_2, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-2" }, |
55 |
{ CS_ISO8859_3, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-3" }, |
56 |
{ CS_ISO8859_4, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-4" }, |
57 |
{ CS_ISO8859_5, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-5" }, |
58 |
{ CS_ISO8859_6, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-6" }, |
59 |
{ CS_ISO8859_7, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-7" }, |
60 |
{ CS_ISO8859_8, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-8" }, |
61 |
{ CS_ISO8859_9, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-9" }, |
62 |
{ CS_ISO8859_10, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-10" }, |
63 |
{ CS_ISO8859_11, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-11" }, |
64 |
{ CS_ISO8859_13, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-13" }, |
65 |
{ CS_ISO8859_14, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-14" }, |
66 |
{ CS_ISO8859_16, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-16" }, |
67 |
|
68 |
# if XFT |
69 |
{ CS_KOI8_U, "xft::lang=ru" }, |
70 |
|
71 |
{ CS_ISO8859_5, "xft::lang=ru" }, |
72 |
{ CS_ISO8859_6, "xft::lang=ar" }, |
73 |
{ CS_ISO8859_7, "xft::lang=el" }, |
74 |
{ CS_ISO8859_8, "xft::lang=he" }, |
75 |
{ CS_ISO8859_9, "xft::lang=tr" }, |
76 |
{ CS_ISO8859_10, "xft::lang=se" }, |
77 |
{ CS_ISO8859_11, "xft::lang=th" }, |
78 |
# endif |
79 |
#endif |
80 |
|
81 |
// japanese |
82 |
#if ENCODING_JP || ENCODING_JP_EXT |
83 |
# if XFT |
84 |
// prefer xft for complex scripts |
85 |
{ CS_JIS0208_1990_0, "xft:Kochi Gothic:antialias=false" }, |
86 |
{ CS_JIS0208_1990_0, "xft:Sazanami Mincho:antialias=false" }, |
87 |
{ CS_JIS0208_1990_0, "xft:Mincho:antialias=false" }, |
88 |
{ CS_JIS0208_1990_0, "xft::lang=ja:antialias=false" }, |
89 |
# endif |
90 |
{ CS_JIS0201_1976_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0201*-0" }, |
91 |
{ CS_JIS0208_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0208*-0" }, |
92 |
{ CS_JIS0212_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0212*-0" }, |
93 |
{ CS_JIS0201_1976_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0201*-0" }, |
94 |
{ CS_JIS0208_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0208*-0" }, |
95 |
{ CS_JIS0212_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0212*-0" }, |
96 |
#endif |
97 |
|
98 |
#if ENCODING_ZH || ENCODING_ZH_EXT |
99 |
# if XFT |
100 |
{ CS_GBK_0, "xft:AR PL KaitiM GB" }, |
101 |
{ CS_GBK_0, "xft:AR PL SungtiL GB" }, |
102 |
{ CS_GBK_0, "xft::lang=zh" }, |
103 |
{ CS_BIG5_EXT, "xft:AR PL Mingti2L Big5" }, |
104 |
{ CS_BIG5_EXT, "xft:AR PL KaitiM Big5" }, |
105 |
{ CS_GB2312_1980_0, "xft:AR PL KaitiM GB" }, |
106 |
{ CS_GB2312_1980_0, "xft:AR PL SungtiL GB" }, |
107 |
{ CS_GB2312_1980_0, "xft::lang=zh" }, |
108 |
# endif |
109 |
{ CS_GBK_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gbk*-0" }, |
110 |
{ CS_BIG5, "-*-*-*-*-*-*-*-*-*-*-c-*-big5-0" }, |
111 |
{ CS_BIG5_PLUS, "-*-*-*-*-*-*-*-*-*-*-c-*-big5p-0" }, |
112 |
{ CS_BIG5_EXT, "-*-*-*-*-*-*-*-*-*-*-c-*-big5.eten-0" }, |
113 |
{ CS_GB2312_1980_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" }, |
114 |
{ CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" }, |
115 |
{ CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-1" }, |
116 |
{ CS_CNS11643_1992_2, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-2" }, |
117 |
{ CS_CNS11643_1992_3, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-3" }, |
118 |
{ CS_CNS11643_1992_4, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-4" }, |
119 |
{ CS_CNS11643_1992_5, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-5" }, |
120 |
{ CS_CNS11643_1992_6, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-6" }, |
121 |
{ CS_CNS11643_1992_7, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-7" }, |
122 |
{ CS_CNS11643_1992_F, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-f" }, |
123 |
#endif |
124 |
|
125 |
#if ENCODING_KR |
126 |
{ CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" }, |
127 |
{ CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" }, |
128 |
# if XFT |
129 |
{ CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" }, |
130 |
{ CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" }, |
131 |
# endif |
132 |
#endif |
133 |
|
134 |
{ CS_UNICODE, "-*-lucidatypewriter-*-*-*-*-*-*-*-*-m-*-iso10646-1" }, |
135 |
//{ CS_UNICODE, "-*-unifont-*-*-*-*-*-*-*-*-c-*-iso10646-1" }, // this gem of a font has actual dotted circles within the combining character glyphs. |
136 |
#if XFT |
137 |
{ CS_UNICODE, "xft:Bitstream Vera Sans Mono:antialias=false:autohint=true" }, |
138 |
{ CS_UNICODE, "xft:Courier New:antialias=false:autohint=true" }, |
139 |
{ CS_UNICODE, "xft:Andale Mono:antialias=false:autohint=false" }, |
140 |
{ CS_UNICODE, "xft:Arial Unicode MS:antialias=false:autohint=false" }, |
141 |
|
142 |
// FreeMono is usually uglier than x fonts, so try after the others |
143 |
{ CS_UNICODE, "xft:FreeMono:autohint=true" }, |
144 |
#endif |
145 |
|
146 |
// generic font fallback, put this last, as many iso10646 fonts have extents |
147 |
// specified for all glyphs in the range they cover, but most are simply empty |
148 |
//{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-c-*-iso10646-1" }, |
149 |
//{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-m-*-iso10646-1" }, |
150 |
{ CS_UNKNOWN, 0 } |
151 |
}; |
152 |
|
153 |
// these characters are used to guess the font height and width |
154 |
// pango uses a similar algorithm and doesn't trust the font either. |
155 |
static uint16_t extent_test_chars[] = { |
156 |
'0', '1', '8', 'a', 'd', 'x', 'm', 'y', 'g', 'W', 'X', '\'', '_', |
157 |
0x00cd, 0x00d5, 0x0114, 0x0177, 0x0643, // ÍÕĔŷﻙ |
158 |
0x304c, 0x672c, // が本 |
159 |
}; |
160 |
|
161 |
#define NUM_EXTENT_TEST_CHARS (sizeof (extent_test_chars) / sizeof (extent_test_chars[0])) |
162 |
|
163 |
#define dTermDisplay Display *disp = term->dpy |
164 |
#define dTermGC GC gc = term->gc |
165 |
|
166 |
///////////////////////////////////////////////////////////////////////////// |
167 |
|
168 |
static const char * |
169 |
enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero) |
170 |
{ |
171 |
uint8_t *buf = rxvt_temp_buf<uint8_t> (len); |
172 |
uint8_t *res = buf; |
173 |
|
174 |
while (len--) |
175 |
{ |
176 |
uint32_t c = FROM_UNICODE (cs, *text++); |
177 |
|
178 |
if (c == NOCHAR) |
179 |
{ |
180 |
c = 0; |
181 |
zero = true; |
182 |
} |
183 |
|
184 |
*buf++ = c; |
185 |
} |
186 |
|
187 |
return (const char *)res; |
188 |
} |
189 |
|
190 |
static const XChar2b * |
191 |
enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero) |
192 |
{ |
193 |
XChar2b *buf = rxvt_temp_buf<XChar2b> (len); |
194 |
XChar2b *res = buf; |
195 |
|
196 |
while (len--) |
197 |
{ |
198 |
uint32_t c = FROM_UNICODE (cs, *text++); |
199 |
|
200 |
if (c == NOCHAR) |
201 |
{ |
202 |
c = 0; |
203 |
zero = true; |
204 |
} |
205 |
|
206 |
buf->byte1 = c >> 8; |
207 |
buf->byte2 = c; |
208 |
buf++; |
209 |
} |
210 |
|
211 |
return res; |
212 |
} |
213 |
|
214 |
///////////////////////////////////////////////////////////////////////////// |
215 |
|
216 |
rxvt_font::rxvt_font () |
217 |
: name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset) |
218 |
{ |
219 |
} |
220 |
|
221 |
void |
222 |
rxvt_font::set_name (char *name) |
223 |
{ |
224 |
if (this->name == name) |
225 |
return; |
226 |
|
227 |
if (this->name) free (this->name); // let the compiler optimize |
228 |
this->name = name; |
229 |
} |
230 |
|
231 |
void |
232 |
rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const |
233 |
{ |
234 |
dTermDisplay; |
235 |
dTermGC; |
236 |
|
237 |
if (color == Color_bg || color == Color_transparent) |
238 |
XClearArea (disp, d, x, y, w, h, false); |
239 |
else if (color >= 0) |
240 |
{ |
241 |
#if XFT |
242 |
bool done = false; |
243 |
#ifdef HAVE_BG_PIXMAP |
244 |
if (term->bgPixmap.pixmap && color >= 0 && term->pix_colors[color].c.color.alpha < 0x0ff00) |
245 |
{ |
246 |
Picture dst = XftDrawPicture (d); |
247 |
if (dst != 0) |
248 |
{ |
249 |
XClearArea (disp, d, x, y, w, h, false); |
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 |
done = true; |
253 |
} |
254 |
} |
255 |
#endif |
256 |
if (!done) |
257 |
XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h); |
258 |
#else |
259 |
XSetForeground (disp, gc, term->pix_colors[color]); |
260 |
XFillRectangle (disp, d, gc, x, y, w, h); |
261 |
#endif |
262 |
} |
263 |
} |
264 |
|
265 |
///////////////////////////////////////////////////////////////////////////// |
266 |
|
267 |
struct rxvt_font_default : rxvt_font { |
268 |
struct rxvt_fontset *fs; |
269 |
|
270 |
rxvt_font_default (rxvt_fontset *fs) |
271 |
: rxvt_font () |
272 |
{ |
273 |
this->fs = fs; |
274 |
} |
275 |
|
276 |
rxvt_fontprop properties () |
277 |
{ |
278 |
rxvt_fontprop p; |
279 |
|
280 |
p.width = p.height = 1; |
281 |
p.ascent = rxvt_fontprop::unset; |
282 |
p.weight = rxvt_fontprop::medium; |
283 |
p.slant = rxvt_fontprop::roman; |
284 |
|
285 |
return p; |
286 |
} |
287 |
|
288 |
bool load (const rxvt_fontprop &prop, bool force_prop) |
289 |
{ |
290 |
width = 1; height = 1; |
291 |
ascent = 1; descent = 0; |
292 |
|
293 |
set_name (strdup ("built-in support font")); |
294 |
|
295 |
return true; |
296 |
} |
297 |
|
298 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
299 |
{ |
300 |
careful = false; |
301 |
|
302 |
if (unicode <= 0x001f) |
303 |
return true; |
304 |
|
305 |
if (unicode <= 0x007f) |
306 |
return false; |
307 |
|
308 |
if (unicode <= 0x009f) |
309 |
return true; |
310 |
|
311 |
#ifdef BUILTIN_GLYPHS |
312 |
if (unicode >= 0x2500 && unicode <= 0x259f && |
313 |
!term->option (Opt_skipBuiltinGlyphs)) |
314 |
return true; |
315 |
#endif |
316 |
|
317 |
if (IS_COMPOSE (unicode)) |
318 |
return true; |
319 |
|
320 |
switch (unicode) |
321 |
{ |
322 |
case ZERO_WIDTH_CHAR: |
323 |
case NOCHAR: |
324 |
return true; |
325 |
} |
326 |
|
327 |
return false; |
328 |
} |
329 |
|
330 |
void draw (rxvt_drawable &d, int x, int y, |
331 |
const text_t *text, int len, |
332 |
int fg, int bg); |
333 |
}; |
334 |
|
335 |
void |
336 |
rxvt_font_default::draw (rxvt_drawable &d, int x, int y, |
337 |
const text_t *text, int len, |
338 |
int fg, int bg) |
339 |
{ |
340 |
dTermDisplay; |
341 |
dTermGC; |
342 |
|
343 |
clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
344 |
|
345 |
XSetForeground (disp, gc, term->pix_colors[fg]); |
346 |
|
347 |
while (len) |
348 |
{ |
349 |
#if ENABLE_COMBINING |
350 |
compose_char *cc; |
351 |
#endif |
352 |
const text_t *tp = text; |
353 |
text_t t = *tp; |
354 |
|
355 |
while (++text, --len && *text == NOCHAR) |
356 |
; |
357 |
|
358 |
int width = text - tp; |
359 |
int fwidth = term->fwidth * width; |
360 |
|
361 |
#ifdef BUILTIN_GLYPHS |
362 |
if (0x2500 <= t && t <= 0x259f) |
363 |
{ |
364 |
# include "table/linedraw.h" |
365 |
uint16_t offs = linedraw_offs[t - 0x2500]; |
366 |
uint32_t *a = linedraw_command + (offs >> 4); |
367 |
uint32_t *b = a + (offs & 15); |
368 |
|
369 |
int W = fwidth; |
370 |
int H = term->fheight; |
371 |
|
372 |
int x_[16]; |
373 |
int y_[16]; |
374 |
|
375 |
for (int i = 0; i <= 8; i++) |
376 |
{ |
377 |
x_[i] = x + ((W-1) * i + (i*7/8)) / 8; |
378 |
y_[i] = y + ((H-1) * i + (i*7/8)) / 8; |
379 |
} |
380 |
|
381 |
x_[10] = x + (W - 1) / 2; x_[9] = x_[10] - 1; x_[11] = x_[10] + 1; |
382 |
y_[10] = y + (H - 1) / 2; y_[9] = y_[10] - 1; y_[11] = y_[10] + 1; |
383 |
|
384 |
XGCValues gcv; |
385 |
|
386 |
gcv.cap_style = CapButt; |
387 |
gcv.line_width = 0; |
388 |
XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv); |
389 |
|
390 |
while (a < b) |
391 |
{ |
392 |
uint32_t command = *a++; |
393 |
|
394 |
int op = (command >> 24) & 255; |
395 |
int a = (command >> 20) & 15; |
396 |
int b = (command >> 16) & 15; |
397 |
int x1 = x_[(command >> 12) & 15]; |
398 |
int y1 = y_[(command >> 8) & 15]; |
399 |
int x2 = x_[(command >> 4) & 15]; |
400 |
int y2 = y_[(command >> 0) & 15]; |
401 |
|
402 |
switch (op) |
403 |
{ |
404 |
case 0: // line |
405 |
XDrawLine (disp, d, gc, x1, y1, x2, y2); |
406 |
break; |
407 |
|
408 |
case 1: // rectangle, possibly stippled |
409 |
if (a) |
410 |
{ |
411 |
static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 }; |
412 |
|
413 |
gcv.fill_style = FillStippled; |
414 |
gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2); |
415 |
gcv.ts_x_origin = x; |
416 |
gcv.ts_y_origin = y; |
417 |
|
418 |
XChangeGC (disp, gc, |
419 |
GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin, |
420 |
&gcv); |
421 |
} |
422 |
|
423 |
XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1); |
424 |
|
425 |
if (a) |
426 |
{ |
427 |
XFreePixmap (disp, gcv.stipple); |
428 |
gcv.stipple = 0; |
429 |
gcv.fill_style = FillSolid; |
430 |
XChangeGC (disp, gc, GCFillStyle, &gcv); |
431 |
} |
432 |
break; |
433 |
case 2: // arc |
434 |
XDrawArc (disp, d, gc, |
435 |
x1 - W/2, y1 - H/2, W-1, H-1, |
436 |
(a - 1) * 90*64, (b - 1) * 90*64); |
437 |
break; |
438 |
} |
439 |
} |
440 |
} |
441 |
#else |
442 |
if (0) |
443 |
; |
444 |
#endif |
445 |
#if ENABLE_COMBINING |
446 |
else if (IS_COMPOSE (t) && (cc = rxvt_composite[t])) |
447 |
{ |
448 |
min_it (width, 2); // we only support wcwidth up to 2 |
449 |
|
450 |
text_t chrs[2]; |
451 |
chrs [1] = NOCHAR; |
452 |
|
453 |
*chrs = cc->c1; |
454 |
rxvt_font *f1 = (*fs)[fs->find_font (cc->c1)]; |
455 |
f1->draw (d, x, y, chrs, width, fg, bg); |
456 |
|
457 |
if (cc->c2 != NOCHAR) |
458 |
{ |
459 |
bool careful; |
460 |
|
461 |
// prefer font of first character, for no good reasons |
462 |
*chrs = cc->c2; |
463 |
rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful) |
464 |
? f1 |
465 |
: (*fs)[fs->find_font (cc->c2)]; |
466 |
|
467 |
f2->draw (d, x, y, chrs, width, fg, Color_none); |
468 |
} |
469 |
} |
470 |
#endif |
471 |
else |
472 |
switch (t) |
473 |
{ |
474 |
case '\t': |
475 |
case ZERO_WIDTH_CHAR: |
476 |
case NOCHAR: |
477 |
break; |
478 |
|
479 |
default: |
480 |
XDrawRectangle (disp, d, gc, x + 2, y + 2, |
481 |
fwidth - 4, term->fheight - 4); |
482 |
} |
483 |
|
484 |
x += fwidth; |
485 |
} |
486 |
} |
487 |
|
488 |
///////////////////////////////////////////////////////////////////////////// |
489 |
|
490 |
struct rxvt_font_x11 : rxvt_font { |
491 |
rxvt_font_x11 () { f = 0; } |
492 |
|
493 |
void clear (); |
494 |
|
495 |
rxvt_fontprop properties (); |
496 |
|
497 |
bool load (const rxvt_fontprop &prop, bool force_prop); |
498 |
|
499 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const; |
500 |
|
501 |
void draw (rxvt_drawable &d, int x, int y, |
502 |
const text_t *text, int len, |
503 |
int fg, int bg); |
504 |
|
505 |
bool slow; // wether this is a proportional font or has other funny characteristics |
506 |
XFontStruct *f; |
507 |
bool enc2b, encm; |
508 |
|
509 |
char *get_property (XFontStruct *f, Atom property, const char *repl) const; |
510 |
bool set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth); |
511 |
bool set_properties (rxvt_fontprop &p, XFontStruct *f); |
512 |
bool set_properties (rxvt_fontprop &p, const char *name); |
513 |
}; |
514 |
|
515 |
char * |
516 |
rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const |
517 |
{ |
518 |
unsigned long value; |
519 |
|
520 |
if (XGetFontProperty (f, property, &value)) |
521 |
return XGetAtomName (term->dpy, value); |
522 |
else |
523 |
return repl ? strdup (repl) : 0; |
524 |
} |
525 |
|
526 |
rxvt_fontprop |
527 |
rxvt_font_x11::properties () |
528 |
{ |
529 |
rxvt_fontprop p; |
530 |
set_properties (p, f); |
531 |
return p; |
532 |
} |
533 |
|
534 |
bool |
535 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth) |
536 |
{ |
537 |
p.width = width != rxvt_fontprop::unset ? width |
538 |
: avgwidth ? (avgwidth + 1) / 10 |
539 |
: (height + 1) / 2; |
540 |
p.height = height; |
541 |
p.ascent = rxvt_fontprop::unset; |
542 |
p.weight = *weight == 'B' || *weight == 'b' ? rxvt_fontprop::bold : rxvt_fontprop::medium; |
543 |
p.slant = *slant == 'r' || *slant == 'R' ? rxvt_fontprop::roman : rxvt_fontprop::italic; |
544 |
|
545 |
return true; |
546 |
} |
547 |
|
548 |
bool |
549 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f) |
550 |
{ |
551 |
unsigned long height; |
552 |
|
553 |
#if 0 |
554 |
if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height)) |
555 |
return false; |
556 |
#else |
557 |
height = f->ascent + f->descent; |
558 |
#endif |
559 |
|
560 |
unsigned long avgwidth; |
561 |
if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth)) |
562 |
avgwidth = 0; |
563 |
|
564 |
char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium"); |
565 |
char *slant = get_property (f, term->xa [XA_SLANT], "r"); |
566 |
|
567 |
set_properties (p, height, weight, slant, avgwidth); |
568 |
|
569 |
free (weight); |
570 |
free (slant); |
571 |
|
572 |
p.ascent = f->ascent; |
573 |
|
574 |
return true; |
575 |
} |
576 |
|
577 |
bool |
578 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name) |
579 |
{ |
580 |
dTermDisplay; |
581 |
int slashes = 0; |
582 |
const char *comp[13]; |
583 |
|
584 |
for (const char *c = name; *c; c++) |
585 |
if (*c == '-') |
586 |
{ |
587 |
comp[slashes++] = c + 1; |
588 |
if (slashes >= 13) |
589 |
break; |
590 |
} |
591 |
|
592 |
/* can we short-circuit the costly XLoadQueryFont? */ |
593 |
if (slashes >= 13 |
594 |
&& (*comp[ 6] >= '1' && *comp[ 6] <= '9') |
595 |
&& (*comp[11] >= '0' && *comp[11] <= '9')) |
596 |
return set_properties (p, atoi (comp[6]), comp[2], comp[3], atoi (comp[11])); |
597 |
|
598 |
XFontStruct *f = XLoadQueryFont (disp, name); |
599 |
|
600 |
if (f) |
601 |
{ |
602 |
// the font should really exist now. if not, we have a problem |
603 |
// (e.g. if the user did xset fp rehash just when we were searching fonts). |
604 |
// in that case, just return garbage. |
605 |
bool ret = set_properties (p, f); |
606 |
XFreeFont (disp, f); |
607 |
return ret; |
608 |
} |
609 |
else |
610 |
return false; |
611 |
} |
612 |
|
613 |
// fix the size of scalable fonts |
614 |
static bool |
615 |
replace_field (char *buf, const char *name, int index, const char old, const char *replace) |
616 |
{ |
617 |
int slashes = 0; |
618 |
const char *field, *end; |
619 |
|
620 |
for (const char *c = name; *c; c++) |
621 |
if (*c == '-') |
622 |
{ |
623 |
if (slashes == index) |
624 |
field = c + 1; |
625 |
|
626 |
if (slashes == index + 1) |
627 |
end = c; |
628 |
|
629 |
if (++slashes >= 13) |
630 |
break; |
631 |
} |
632 |
|
633 |
if (slashes >= 13 && (!old || *field == old)) |
634 |
{ |
635 |
// TODO: check for overflow in font-name |
636 |
strncpy (buf, name, field - name); |
637 |
buf += field - name; |
638 |
strcpy (buf, replace); |
639 |
strcat (buf, end); |
640 |
|
641 |
return true; |
642 |
} |
643 |
else |
644 |
{ |
645 |
strcpy (buf, name); |
646 |
|
647 |
return false; |
648 |
} |
649 |
} |
650 |
|
651 |
bool |
652 |
rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop) |
653 |
{ |
654 |
dTermDisplay; |
655 |
|
656 |
clear (); |
657 |
|
658 |
char field_str[64]; // enough for 128 bits |
659 |
|
660 |
// first morph the font if required |
661 |
if (force_prop) |
662 |
{ |
663 |
char fname[1024]; |
664 |
|
665 |
if (name[0] != '-') |
666 |
{ |
667 |
f = XLoadQueryFont (disp, name); |
668 |
|
669 |
if (!f) |
670 |
return false; |
671 |
|
672 |
char *new_name = get_property (f, XA_FONT, name); |
673 |
|
674 |
if (new_name) |
675 |
set_name (new_name); |
676 |
else |
677 |
rxvt_warn ("font '%s' has no FONT property, continuing without.", name); |
678 |
|
679 |
XFreeFont (disp, f); |
680 |
f = 0; |
681 |
} |
682 |
|
683 |
if (prop.weight != rxvt_fontprop::unset) |
684 |
{ |
685 |
replace_field (fname, name, 2, 0, |
686 |
prop.weight < rxvt_fontprop::bold |
687 |
? "medium" : "bold"); |
688 |
set_name (strdup (fname)); |
689 |
} |
690 |
|
691 |
if (prop.slant != rxvt_fontprop::unset) |
692 |
{ |
693 |
replace_field (fname, name, 3, 0, |
694 |
prop.slant < rxvt_fontprop::italic |
695 |
? "r" : "i"); // TODO: handle "o"blique, too |
696 |
set_name (strdup (fname)); |
697 |
} |
698 |
} |
699 |
|
700 |
sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset |
701 |
? 0 : prop.height); |
702 |
|
703 |
struct font_weight { |
704 |
char *name; |
705 |
int diff; |
706 |
|
707 |
void clear () |
708 |
{ |
709 |
name = 0; |
710 |
diff = 0x7fffffff; |
711 |
} |
712 |
|
713 |
font_weight () { clear (); } |
714 |
~font_weight () { free (name); } |
715 |
}; |
716 |
|
717 |
char **list; |
718 |
int count; |
719 |
list = XListFonts (disp, name, 4000, &count); |
720 |
|
721 |
set_name (0); |
722 |
|
723 |
if (!list) |
724 |
return false; |
725 |
|
726 |
font_weight *fonts = new font_weight[count]; |
727 |
|
728 |
for (int i = 0; i < count; i++) |
729 |
{ |
730 |
rxvt_fontprop p; |
731 |
char fname[1024]; |
732 |
|
733 |
int diff = 0; |
734 |
|
735 |
if (replace_field (fname, list[i], 6, '0', field_str)) |
736 |
diff += 10; // slightly penalize scalable fonts |
737 |
else if (replace_field (fname, list[i], 11, '0', "0")) |
738 |
diff += 300; // more heavily penalize what looks like scaled bitmap fonts |
739 |
|
740 |
if (!set_properties (p, fname)) |
741 |
continue; |
742 |
|
743 |
if (prop.height != rxvt_fontprop::unset |
744 |
&& p.height > prop.height) // weed out too large fonts |
745 |
continue; |
746 |
|
747 |
if (prop.height != rxvt_fontprop::unset) diff += (prop.height - p.height) * 128; |
748 |
if (prop.weight != rxvt_fontprop::unset) diff += abs (prop.weight - p.weight); |
749 |
if (prop.slant != rxvt_fontprop::unset) diff += abs (prop.slant - p.slant); |
750 |
//if (prop.width != rxvt_fontprop::unset) diff += abs (prop.width - p.width); |
751 |
|
752 |
fonts[i].name = strdup (fname); |
753 |
fonts[i].diff = diff; |
754 |
} |
755 |
|
756 |
XFreeFontNames (list); |
757 |
|
758 |
// this loop only iterates when the guessed font-size is too small |
759 |
for (;;) |
760 |
{ |
761 |
font_weight *best = fonts + count - 1; |
762 |
|
763 |
for (font_weight *w = best; w-- > fonts; ) |
764 |
if (w->diff <= best->diff) |
765 |
best = w; |
766 |
|
767 |
if (!best->name |
768 |
|| !(f = XLoadQueryFont (disp, best->name))) |
769 |
break; |
770 |
|
771 |
set_name (best->name); |
772 |
best->clear (); |
773 |
|
774 |
ascent = f->ascent; |
775 |
descent = f->descent; |
776 |
height = ascent + descent; |
777 |
|
778 |
if (prop.height == rxvt_fontprop::unset |
779 |
|| height <= prop.height) |
780 |
break; // font is ready for use |
781 |
|
782 |
// PIXEL_SIZE small enough, but real height too large |
783 |
clear (); |
784 |
} |
785 |
|
786 |
delete [] fonts; |
787 |
|
788 |
if (!f) |
789 |
return false; |
790 |
|
791 |
char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0); |
792 |
char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0); |
793 |
|
794 |
if (registry && encoding) |
795 |
{ |
796 |
char charset[64]; |
797 |
snprintf (charset, 64, "%s-%s", registry, encoding); |
798 |
|
799 |
cs = codeset_from_name (charset); |
800 |
} |
801 |
else |
802 |
{ |
803 |
const char *charset = get_property (f, XA_FONT, 0); |
804 |
|
805 |
if (!charset) |
806 |
charset = name; |
807 |
|
808 |
int count = 13; |
809 |
while (*charset) |
810 |
if (*charset++ == '-' && !--count) |
811 |
break; |
812 |
|
813 |
cs = codeset_from_name (charset); |
814 |
} |
815 |
|
816 |
free (registry); |
817 |
free (encoding); |
818 |
|
819 |
if (cs == CS_UNICODE) |
820 |
cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font |
821 |
|
822 |
encm = f->min_byte1 != 0 || f->max_byte1 != 0; |
823 |
enc2b = encm || f->max_char_or_byte2 > 255; |
824 |
|
825 |
slow = false; |
826 |
|
827 |
#if 1 // only used for slow detection, TODO optimize |
828 |
if (f->min_bounds.width == f->max_bounds.width || !f->per_char) |
829 |
width = f->max_bounds.width; |
830 |
else |
831 |
{ |
832 |
slow = true; |
833 |
|
834 |
int N = f->max_char_or_byte2 - f->min_char_or_byte2; |
835 |
|
836 |
if (encm) |
837 |
N += (f->max_byte1 - f->min_byte1) |
838 |
* (f->max_char_or_byte2 - f->min_char_or_byte2 + 1); |
839 |
|
840 |
while (N) |
841 |
{ |
842 |
if (f->per_char[N].width > width) |
843 |
width = f->per_char[N].width; |
844 |
|
845 |
--N; |
846 |
} |
847 |
} |
848 |
#endif |
849 |
|
850 |
width = 1; |
851 |
|
852 |
for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; ) |
853 |
{ |
854 |
if (FROM_UNICODE (cs, *t) == NOCHAR) |
855 |
continue; |
856 |
|
857 |
// ignore characters we wouldn't use anyways |
858 |
bool careful; |
859 |
if (!has_char (*t, &prop, careful)) |
860 |
continue; |
861 |
|
862 |
XChar2b ch = { *t >> 8, *t }; |
863 |
|
864 |
XCharStruct g; |
865 |
int dir_ret, asc_ret, des_ret; |
866 |
XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g); |
867 |
|
868 |
int wcw = WCWIDTH (*t); |
869 |
if (wcw > 0) g.width = (g.width + wcw - 1) / wcw; |
870 |
|
871 |
if (width < g.width) width = g.width; |
872 |
} |
873 |
|
874 |
if (cs == CS_UNKNOWN) |
875 |
{ |
876 |
fprintf (stderr, "unable to deduce codeset, ignoring font '%s'\n", name); |
877 |
|
878 |
clear (); |
879 |
return false; |
880 |
} |
881 |
|
882 |
#if 0 // do it per-character |
883 |
if (prop && width > prop->width) |
884 |
{ |
885 |
clear (); |
886 |
return false; |
887 |
} |
888 |
#endif |
889 |
|
890 |
return true; |
891 |
} |
892 |
|
893 |
void |
894 |
rxvt_font_x11::clear () |
895 |
{ |
896 |
if (f) |
897 |
{ |
898 |
XFreeFont (term->dpy, f); |
899 |
f = 0; |
900 |
} |
901 |
} |
902 |
|
903 |
bool |
904 |
rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
905 |
{ |
906 |
uint32_t ch = FROM_UNICODE (cs, unicode); |
907 |
|
908 |
if (ch == NOCHAR) |
909 |
return false; |
910 |
|
911 |
/* check wether the character exists in _this_ font. horrible. */ |
912 |
XCharStruct *xcs; |
913 |
|
914 |
if (encm) |
915 |
{ |
916 |
unsigned char byte1 = ch >> 8; |
917 |
unsigned char byte2 = ch & 255; |
918 |
|
919 |
if (byte1 < f->min_byte1 || byte1 > f->max_byte1 |
920 |
|| byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2) |
921 |
return false; |
922 |
|
923 |
if (f->per_char) |
924 |
{ |
925 |
int D = f->max_char_or_byte2 - f->min_char_or_byte2 + 1; |
926 |
int N = (byte1 - f->min_byte1) * D + byte2 - f->min_char_or_byte2; |
927 |
|
928 |
xcs = f->per_char + N; |
929 |
} |
930 |
else |
931 |
xcs = &f->max_bounds; |
932 |
} |
933 |
else |
934 |
{ |
935 |
if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2) |
936 |
return false; |
937 |
|
938 |
if (f->per_char) |
939 |
xcs = f->per_char + (ch - f->min_char_or_byte2); |
940 |
else |
941 |
xcs = &f->max_bounds; |
942 |
} |
943 |
|
944 |
if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0 |
945 |
&& xcs->ascent == 0 && xcs->descent == 0) |
946 |
return false; |
947 |
|
948 |
if (!prop || prop->width == rxvt_fontprop::unset) |
949 |
return true; |
950 |
|
951 |
// check wether character overlaps previous/next character |
952 |
int w = xcs->rbearing - xcs->lbearing; |
953 |
int wcw = max (WCWIDTH (unicode), 1); |
954 |
|
955 |
careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw; |
956 |
|
957 |
if (careful && !OVERLAP_OK (w, wcw, prop)) |
958 |
return false; |
959 |
|
960 |
return true; |
961 |
} |
962 |
|
963 |
void |
964 |
rxvt_font_x11::draw (rxvt_drawable &d, int x, int y, |
965 |
const text_t *text, int len, |
966 |
int fg, int bg) |
967 |
{ |
968 |
// this looks like a mess /. |
969 |
// and it is a mess /. |
970 |
// yet we are trying to be perfect /. |
971 |
// but the result still isn't perfect /. |
972 |
|
973 |
dTermDisplay; |
974 |
dTermGC; |
975 |
|
976 |
bool slow = this->slow |
977 |
|| width != term->fwidth |
978 |
|| height != term->fheight; |
979 |
|
980 |
int base = ascent; // sorry, incorrect: term->fbase; |
981 |
|
982 |
XGCValues v; |
983 |
v.foreground = term->pix_colors[fg]; |
984 |
v.font = f->fid; |
985 |
|
986 |
if (enc2b) |
987 |
{ |
988 |
const XChar2b *xc = enc_xchar2b (text, len, cs, slow); |
989 |
|
990 |
if (bg == Color_bg && !slow) |
991 |
{ |
992 |
v.background = term->pix_colors[bg]; |
993 |
XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v); |
994 |
XDrawImageString16 (disp, d, gc, x, y + base, xc, len); |
995 |
} |
996 |
else |
997 |
{ |
998 |
clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
999 |
|
1000 |
XChangeGC (disp, gc, GCForeground | GCFont, &v); |
1001 |
|
1002 |
if (slow) |
1003 |
{ |
1004 |
do |
1005 |
{ |
1006 |
if (xc->byte1 || xc->byte2) |
1007 |
XDrawString16 (disp, d, gc, x, y + base, xc, 1); |
1008 |
|
1009 |
x += term->fwidth; |
1010 |
xc++; len--; |
1011 |
} |
1012 |
while (len); |
1013 |
} |
1014 |
else |
1015 |
XDrawString16 (disp, d, gc, x, y + base, xc, len); |
1016 |
} |
1017 |
} |
1018 |
else |
1019 |
{ |
1020 |
const char *xc = enc_char (text, len, cs, slow); |
1021 |
|
1022 |
if (bg == Color_bg && !slow) |
1023 |
{ |
1024 |
v.background = term->pix_colors[bg]; |
1025 |
XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v); |
1026 |
XDrawImageString (disp, d, gc, x, y + base, xc, len); |
1027 |
} |
1028 |
else |
1029 |
{ |
1030 |
clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
1031 |
|
1032 |
XChangeGC (disp, gc, GCForeground | GCFont, &v); |
1033 |
|
1034 |
if (slow) |
1035 |
{ |
1036 |
do |
1037 |
{ |
1038 |
if (*xc) |
1039 |
XDrawString (disp, d, gc, x, y + base, xc, 1); |
1040 |
|
1041 |
x += term->fwidth; |
1042 |
xc++; len--; |
1043 |
} |
1044 |
while (len); |
1045 |
} |
1046 |
else |
1047 |
XDrawString (disp, d, gc, x, y + base, xc, len); |
1048 |
} |
1049 |
} |
1050 |
} |
1051 |
|
1052 |
///////////////////////////////////////////////////////////////////////////// |
1053 |
|
1054 |
#if XFT |
1055 |
|
1056 |
struct rxvt_font_xft : rxvt_font { |
1057 |
rxvt_font_xft () { f = 0; } |
1058 |
|
1059 |
void clear (); |
1060 |
|
1061 |
rxvt_fontprop properties (); |
1062 |
|
1063 |
bool load (const rxvt_fontprop &prop, bool force_prop); |
1064 |
|
1065 |
void draw (rxvt_drawable &d, int x, int y, |
1066 |
const text_t *text, int len, |
1067 |
int fg, int bg); |
1068 |
|
1069 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const; |
1070 |
|
1071 |
protected: |
1072 |
XftFont *f; |
1073 |
}; |
1074 |
|
1075 |
void |
1076 |
rxvt_font_xft::clear () |
1077 |
{ |
1078 |
if (f) |
1079 |
{ |
1080 |
XftFontClose (term->dpy, f); |
1081 |
f = 0; |
1082 |
} |
1083 |
} |
1084 |
|
1085 |
rxvt_fontprop |
1086 |
rxvt_font_xft::properties () |
1087 |
{ |
1088 |
rxvt_fontprop p; |
1089 |
|
1090 |
FT_Face face = XftLockFace (f); |
1091 |
|
1092 |
p.width = width; |
1093 |
p.height = height; |
1094 |
p.ascent = ascent; |
1095 |
p.weight = face->style_flags & FT_STYLE_FLAG_BOLD |
1096 |
? rxvt_fontprop::bold : rxvt_fontprop::medium; |
1097 |
p.slant = face->style_flags & FT_STYLE_FLAG_ITALIC |
1098 |
? rxvt_fontprop::italic : rxvt_fontprop::roman; |
1099 |
|
1100 |
XftUnlockFace (f); |
1101 |
|
1102 |
return p; |
1103 |
} |
1104 |
|
1105 |
bool |
1106 |
rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop) |
1107 |
{ |
1108 |
dTermDisplay; |
1109 |
|
1110 |
clear (); |
1111 |
|
1112 |
FcPattern *p = FcNameParse ((FcChar8 *) name); |
1113 |
|
1114 |
if (!p) |
1115 |
return false; |
1116 |
|
1117 |
FcValue v; |
1118 |
|
1119 |
if (prop.height != rxvt_fontprop::unset |
1120 |
&& (FcPatternGet (p, FC_PIXEL_SIZE, 0, &v) != FcResultMatch |
1121 |
&& FcPatternGet (p, FC_SIZE, 0, &v) != FcResultMatch)) |
1122 |
FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height); |
1123 |
|
1124 |
if (prop.weight != rxvt_fontprop::unset |
1125 |
&& (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch)) |
1126 |
FcPatternAddInteger (p, FC_WEIGHT, prop.weight); |
1127 |
|
1128 |
if (prop.slant != rxvt_fontprop::unset |
1129 |
&& (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch)) |
1130 |
FcPatternAddInteger (p, FC_SLANT, prop.slant); |
1131 |
|
1132 |
#if 0 // clipping unfortunately destroys our precious double-width-characters |
1133 |
// clip width, we can't do better, or can we? |
1134 |
if (FcPatternGet (p, FC_CHAR_WIDTH, 0, &v) != FcResultMatch) |
1135 |
FcPatternAddInteger (p, FC_CHAR_WIDTH, prop->width); |
1136 |
#endif |
1137 |
|
1138 |
if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch) |
1139 |
FcPatternAddBool (p, FC_MINSPACE, 1); |
1140 |
|
1141 |
// store generated name so iso14755 view gives better results |
1142 |
set_name ((char *)FcNameUnparse (p)); |
1143 |
|
1144 |
XftResult result; |
1145 |
FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result); |
1146 |
|
1147 |
FcPatternDestroy (p); |
1148 |
|
1149 |
if (!match) |
1150 |
return false; |
1151 |
|
1152 |
int ftheight = 0; |
1153 |
bool success = true; |
1154 |
|
1155 |
for (;;) |
1156 |
{ |
1157 |
f = XftFontOpenPattern (disp, FcPatternDuplicate (match)); |
1158 |
|
1159 |
if (!f) |
1160 |
{ |
1161 |
success = false; |
1162 |
break; |
1163 |
} |
1164 |
|
1165 |
FT_Face face = XftLockFace (f); |
1166 |
|
1167 |
ascent = (face->size->metrics.ascender + 63) >> 6; |
1168 |
descent = (-face->size->metrics.descender + 63) >> 6; |
1169 |
height = max (ascent + descent, (face->size->metrics.height + 63) >> 6); |
1170 |
width = 0; |
1171 |
|
1172 |
bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE; |
1173 |
|
1174 |
XftUnlockFace (f); |
1175 |
|
1176 |
int glheight = height; |
1177 |
|
1178 |
for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; ) |
1179 |
{ |
1180 |
FcChar16 ch = *t; |
1181 |
|
1182 |
if (cs != CS_UNICODE |
1183 |
&& ch > 0x100 |
1184 |
&& FROM_UNICODE (cs, ch) == NOCHAR) |
1185 |
continue; |
1186 |
|
1187 |
// ignore characters we wouldn't use anyways |
1188 |
bool careful; |
1189 |
if (!has_char (*t, &prop, careful)) |
1190 |
continue; |
1191 |
|
1192 |
XGlyphInfo g; |
1193 |
XftTextExtents16 (disp, f, &ch, 1, &g); |
1194 |
|
1195 |
g.width -= g.x; |
1196 |
|
1197 |
int wcw = WCWIDTH (ch); |
1198 |
if (wcw > 0) g.width = (g.width + wcw - 1) / wcw; |
1199 |
|
1200 |
if (width < g.width ) width = g.width; |
1201 |
if (height < g.height ) height = g.height; |
1202 |
if (glheight < g.height - g.y) glheight = g.height - g.y; |
1203 |
} |
1204 |
|
1205 |
if (!width) |
1206 |
{ |
1207 |
rxvt_warn ("unable to calculate font width for '%s', ignoring.\n", name); |
1208 |
|
1209 |
XftFontClose (disp, f); |
1210 |
f = 0; |
1211 |
|
1212 |
success = false; |
1213 |
break; |
1214 |
} |
1215 |
|
1216 |
if (prop.height == rxvt_fontprop::unset |
1217 |
|| (height <= prop.height && glheight <= prop.height) |
1218 |
|| height <= 2 |
1219 |
|| !scalable) |
1220 |
break; |
1221 |
|
1222 |
if (ftheight) |
1223 |
{ |
1224 |
// take smaller steps near the end |
1225 |
if (height > prop.height + 1) ftheight++; |
1226 |
if (height > prop.height + 2) ftheight++; |
1227 |
if (height > prop.height + 3) ftheight++; |
1228 |
|
1229 |
ftheight -= height - prop.height; |
1230 |
} |
1231 |
else |
1232 |
ftheight = prop.height - 1; |
1233 |
|
1234 |
XftFontClose (disp, f); |
1235 |
FcPatternDel (match, FC_PIXEL_SIZE); |
1236 |
FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight); |
1237 |
} |
1238 |
|
1239 |
FcPatternDestroy (match); |
1240 |
|
1241 |
#if 0 // do it per-character |
1242 |
if (prop.width != rxvt_fontprop::unset && width > prop.width) |
1243 |
{ |
1244 |
clear (); |
1245 |
success = false; |
1246 |
} |
1247 |
#endif |
1248 |
|
1249 |
return success; |
1250 |
} |
1251 |
|
1252 |
bool |
1253 |
rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
1254 |
{ |
1255 |
careful = false; |
1256 |
|
1257 |
if (!XftCharExists (term->dpy, f, unicode)) |
1258 |
return false; |
1259 |
|
1260 |
if (!prop || prop->width == rxvt_fontprop::unset) |
1261 |
return true; |
1262 |
|
1263 |
// check character against base font bounding box |
1264 |
FcChar32 ch = unicode; |
1265 |
XGlyphInfo g; |
1266 |
XftTextExtents32 (term->dpy, f, &ch, 1, &g); |
1267 |
|
1268 |
int w = g.width - g.x; |
1269 |
int wcw = max (WCWIDTH (unicode), 1); |
1270 |
|
1271 |
careful = g.x > 0 || w > prop->width * wcw; |
1272 |
|
1273 |
if (careful && !OVERLAP_OK (w, wcw, prop)) |
1274 |
return false; |
1275 |
|
1276 |
// this weeds out _totally_ broken fonts, or glyphs |
1277 |
if (!OVERLAP_OK (g.xOff, wcw, prop)) |
1278 |
return false; |
1279 |
|
1280 |
return true; |
1281 |
} |
1282 |
|
1283 |
void |
1284 |
rxvt_font_xft::draw (rxvt_drawable &d, int x, int y, |
1285 |
const text_t *text, int len, |
1286 |
int fg, int bg) |
1287 |
{ |
1288 |
XGlyphInfo extents; |
1289 |
XftGlyphSpec *enc = (XftGlyphSpec *)rxvt_temp_buf (len * sizeof (XftGlyphSpec)); |
1290 |
XftGlyphSpec *ep = enc; |
1291 |
|
1292 |
dTermDisplay; |
1293 |
dTermGC; |
1294 |
|
1295 |
int w = term->fwidth * len; |
1296 |
int h = term->fheight; |
1297 |
|
1298 |
/* TODO: this logic needs some more thinking, since we no longer do pseudo-transparency. |
1299 |
* Maybe make buffering into a resource flag? Compile time option doesn't seems like a |
1300 |
* good idea from the perspective of packaging for wide variety of user configs. |
1301 |
*/ |
1302 |
bool buffered = true |
1303 |
#ifdef FORCE_UNBUFFERED_XFT |
1304 |
&& bg >= 0 |
1305 |
#endif |
1306 |
; |
1307 |
// cut trailing spaces |
1308 |
while (len && text [len - 1] == ' ') |
1309 |
len--; |
1310 |
|
1311 |
int x_ = buffered ? 0 : x; |
1312 |
int y_ = buffered ? 0 : y; |
1313 |
|
1314 |
while (len) |
1315 |
{ |
1316 |
int cwidth = term->fwidth; |
1317 |
FcChar32 fc = *text++; len--; |
1318 |
|
1319 |
while (len && *text == NOCHAR) |
1320 |
text++, len--, cwidth += term->fwidth; |
1321 |
|
1322 |
if (fc != ' ') // skip spaces |
1323 |
{ |
1324 |
FT_UInt glyph = XftCharIndex (disp, f, fc); |
1325 |
XftGlyphExtents (disp, f, &glyph, 1, &extents); |
1326 |
|
1327 |
ep->glyph = glyph; |
1328 |
ep->x = x_ + (cwidth - extents.xOff >> 1); |
1329 |
ep->y = y_ + ascent; |
1330 |
|
1331 |
if (extents.xOff == 0) |
1332 |
ep->x = x_ + cwidth; |
1333 |
|
1334 |
ep++; |
1335 |
} |
1336 |
|
1337 |
x_ += cwidth; |
1338 |
} |
1339 |
|
1340 |
if (buffered) |
1341 |
{ |
1342 |
bool back_rendered = false; |
1343 |
if (ep != enc) |
1344 |
{ |
1345 |
rxvt_drawable &d2 = d.screen->scratch_drawable (w, h); |
1346 |
|
1347 |
#ifdef HAVE_BG_PIXMAP |
1348 |
if (term->bgPixmap.pixmap) |
1349 |
{ |
1350 |
Picture dst = 0; |
1351 |
|
1352 |
if (bg >= 0 && term->pix_colors[bg].c.color.alpha < 0x0ff00) |
1353 |
dst = XftDrawPicture (d2); |
1354 |
|
1355 |
if (bg < 0 || dst != 0) |
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) |
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 |
} |
1399 |
#endif |
1400 |
|
1401 |
if (bg >= 0 && !back_rendered) |
1402 |
XftDrawRect (d2, &term->pix_colors[bg].c, 0, 0, w, h); |
1403 |
|
1404 |
XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc); |
1405 |
XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y); |
1406 |
} |
1407 |
else |
1408 |
clear_rect (d, x, y, w, h, bg); |
1409 |
} |
1410 |
else |
1411 |
{ |
1412 |
clear_rect (d, x, y, w, h, bg); |
1413 |
XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc); |
1414 |
} |
1415 |
} |
1416 |
|
1417 |
#endif |
1418 |
|
1419 |
///////////////////////////////////////////////////////////////////////////// |
1420 |
|
1421 |
rxvt_fontset::rxvt_fontset (rxvt_term *term) |
1422 |
: fontdesc (0), term (term) |
1423 |
{ |
1424 |
clear (); |
1425 |
} |
1426 |
|
1427 |
rxvt_fontset::~rxvt_fontset () |
1428 |
{ |
1429 |
clear (); |
1430 |
} |
1431 |
|
1432 |
void |
1433 |
rxvt_fontset::clear () |
1434 |
{ |
1435 |
prop.width = prop.height = prop.ascent = prop.weight = prop.slant |
1436 |
= rxvt_fontprop::unset; |
1437 |
force_prop = false; |
1438 |
|
1439 |
for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++) |
1440 |
FONT_UNREF (*i); |
1441 |
|
1442 |
for (pagemap **p = fmap.begin (); p != fmap.end (); p++) |
1443 |
delete *p; |
1444 |
|
1445 |
free (fontdesc); fontdesc = 0; |
1446 |
|
1447 |
fonts.clear (); |
1448 |
|
1449 |
fallback = fallback_fonts; |
1450 |
} |
1451 |
|
1452 |
rxvt_font * |
1453 |
rxvt_fontset::new_font (const char *name, codeset cs) |
1454 |
{ |
1455 |
rxvt_font *f; |
1456 |
|
1457 |
if (!name || !*name) |
1458 |
{ |
1459 |
name = ""; |
1460 |
f = new rxvt_font_default (this); |
1461 |
} |
1462 |
#if XFT |
1463 |
else if (!strncmp (name, "xft:", 4)) |
1464 |
{ |
1465 |
name += 4; |
1466 |
f = new rxvt_font_xft (); |
1467 |
} |
1468 |
#endif |
1469 |
else if (!strncmp (name, "x:", 2)) |
1470 |
{ |
1471 |
name += 2; |
1472 |
f = new rxvt_font_x11; |
1473 |
} |
1474 |
else |
1475 |
f = new rxvt_font_x11; |
1476 |
|
1477 |
f->set_term (term); |
1478 |
f->set_name (strdup (name)); |
1479 |
|
1480 |
f->cs = cs; |
1481 |
f->loaded = false; |
1482 |
|
1483 |
return f; |
1484 |
} |
1485 |
|
1486 |
///////////////////////////////////////////////////////////////////////////// |
1487 |
|
1488 |
void |
1489 |
rxvt_fontset::add_fonts (const char *desc) |
1490 |
{ |
1491 |
if (desc) |
1492 |
{ |
1493 |
char buf[512]; |
1494 |
const char *end; |
1495 |
|
1496 |
do |
1497 |
{ |
1498 |
while (*desc && *desc <= ' ') |
1499 |
desc++; |
1500 |
|
1501 |
codeset cs = CS_UNICODE; |
1502 |
|
1503 |
if (*desc == '[') |
1504 |
{ |
1505 |
char spec[256]; |
1506 |
const char *extra = ++desc; // not yet used |
1507 |
|
1508 |
desc = strchr (desc, ']'); |
1509 |
|
1510 |
if (!desc) |
1511 |
{ |
1512 |
rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n"); |
1513 |
break; |
1514 |
} |
1515 |
|
1516 |
memcpy (spec, extra, min (desc - extra, 255)); |
1517 |
spec[min (desc - extra, 255)] = 0; |
1518 |
|
1519 |
if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1)) |
1520 |
cs = codeset_from_name (spec + sizeof ("codeset=") - 1); |
1521 |
else |
1522 |
rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec); |
1523 |
|
1524 |
desc++; |
1525 |
while (*desc <= ' ') desc++; |
1526 |
} |
1527 |
|
1528 |
end = strchr (desc, ','); |
1529 |
if (!end) |
1530 |
end = desc + strlen (desc); |
1531 |
|
1532 |
if (end - desc < 511) |
1533 |
{ |
1534 |
strncpy (buf, desc, end - desc); |
1535 |
buf[end - desc] = 0; |
1536 |
|
1537 |
fonts.push_back (new_font (buf, cs)); |
1538 |
} |
1539 |
else |
1540 |
rxvt_warn ("fontset element too long (>511 bytes), ignored."); |
1541 |
|
1542 |
desc = end + 1; |
1543 |
} |
1544 |
while (*end); |
1545 |
} |
1546 |
} |
1547 |
|
1548 |
bool |
1549 |
rxvt_fontset::realize_font (int i) |
1550 |
{ |
1551 |
if (i < 0 || i >= fonts.size ()) |
1552 |
return false; |
1553 |
|
1554 |
if (fonts[i]->loaded) |
1555 |
return true; |
1556 |
|
1557 |
fonts[i]->loaded = true; |
1558 |
|
1559 |
if (!fonts[i]->load (prop, force_prop)) |
1560 |
{ |
1561 |
fonts[i]->cs = CS_UNKNOWN; |
1562 |
return false; |
1563 |
} |
1564 |
|
1565 |
return true; |
1566 |
} |
1567 |
|
1568 |
bool |
1569 |
rxvt_fontset::populate (const char *desc) |
1570 |
{ |
1571 |
clear (); |
1572 |
|
1573 |
fontdesc = strdup (desc); |
1574 |
|
1575 |
fonts.push_back (new_font (0, CS_UNICODE)); |
1576 |
realize_font (0); |
1577 |
|
1578 |
add_fonts (desc); |
1579 |
|
1580 |
return true; |
1581 |
} |
1582 |
|
1583 |
int |
1584 |
rxvt_fontset::find_font (const char *name) const |
1585 |
{ |
1586 |
for (rxvt_font *const *f = fonts.begin (); f < fonts.end (); f++) |
1587 |
if ((*f)->name && !strcmp ((*f)->name, name)) |
1588 |
return f - fonts.begin (); |
1589 |
|
1590 |
return -1; |
1591 |
} |
1592 |
|
1593 |
int |
1594 |
rxvt_fontset::find_font (unicode_t unicode) |
1595 |
{ |
1596 |
if (unicode >= 1<<20) |
1597 |
return 0; |
1598 |
|
1599 |
unicode_t hi = unicode >> 8; |
1600 |
|
1601 |
if (hi < fmap.size () |
1602 |
&& fmap[hi] |
1603 |
&& (*fmap[hi])[unicode & 0xff] != 0xff) |
1604 |
return (*fmap[hi])[unicode & 0xff]; |
1605 |
|
1606 |
unsigned int i; |
1607 |
|
1608 |
for (i = 0; i < fonts.size (); i++) |
1609 |
{ |
1610 |
rxvt_font *f = fonts[i]; |
1611 |
|
1612 |
if (!f->loaded) |
1613 |
{ |
1614 |
if (FROM_UNICODE (f->cs, unicode) == NOCHAR) |
1615 |
goto next_font; |
1616 |
|
1617 |
if (!realize_font (i)) |
1618 |
goto next_font; |
1619 |
|
1620 |
if (prop.ascent != rxvt_fontprop::unset) |
1621 |
max_it (f->ascent, prop.ascent); |
1622 |
} |
1623 |
|
1624 |
if (f->cs == CS_UNKNOWN) |
1625 |
goto next_font; |
1626 |
|
1627 |
bool careful; |
1628 |
if (f->has_char (unicode, &prop, careful)) |
1629 |
{ |
1630 |
if (careful) |
1631 |
i |= 128; |
1632 |
|
1633 |
goto found; |
1634 |
} |
1635 |
|
1636 |
next_font: |
1637 |
if (i == fonts.size () - 1) |
1638 |
{ |
1639 |
if (fallback->name) |
1640 |
{ |
1641 |
// search through the fallback list |
1642 |
fonts.push_back (new_font (fallback->name, fallback->cs)); |
1643 |
fallback++; |
1644 |
} |
1645 |
else |
1646 |
{ |
1647 |
// try to find a new font. |
1648 |
// only xft currently supported, as there is no |
1649 |
// way to configure this and xft is easier to hack in, |
1650 |
// while x11 has more framework in place already. |
1651 |
// TODO: this is a real resource hog, xft takes ages(?) |
1652 |
#if XFT && USE_SLOW_LOOKUP |
1653 |
// grab the first xft font that seems suitable |
1654 |
FcPattern *p = FcPatternCreate (); |
1655 |
|
1656 |
FcCharSet *s = FcCharSetCreate (); |
1657 |
FcCharSetAddChar (s, unicode); |
1658 |
FcPatternAddCharSet (p, FC_CHARSET, s); |
1659 |
// charsets don't help that much, as xft might return |
1660 |
// a non-matching font even if a better font is available :/ |
1661 |
|
1662 |
x x x x TODO prop might have unset contents |
1663 |
FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height); |
1664 |
FcPatternAddInteger (p, FC_WEIGHT, prop.weight); |
1665 |
FcPatternAddInteger (p, FC_SLANT, prop.slant); |
1666 |
FcPatternAddBool (p, FC_MINSPACE, 1); |
1667 |
//FcPatternAddBool (p, FC_ANTIALIAS, 1); |
1668 |
|
1669 |
XftResult result; |
1670 |
FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result); |
1671 |
|
1672 |
FcPatternDestroy (p); |
1673 |
|
1674 |
if (match) |
1675 |
{ |
1676 |
FcPatternDel (match, FC_CHARSET); |
1677 |
char *font = (char *)FcNameUnparse (match); |
1678 |
FcPatternDestroy (match); |
1679 |
|
1680 |
if (find_font (font) < 0) |
1681 |
{ |
1682 |
char fontname[4096]; |
1683 |
sprintf (fontname, "xft:%-.4090s", font); |
1684 |
|
1685 |
fonts.push_back (new_font (fontname, CS_UNICODE)); |
1686 |
} |
1687 |
|
1688 |
free (font); |
1689 |
} |
1690 |
#endif |
1691 |
} |
1692 |
} |
1693 |
} |
1694 |
|
1695 |
/* we must return SOME font */ |
1696 |
i = 0; |
1697 |
|
1698 |
found: |
1699 |
// found a font, cache it |
1700 |
if (i < 255) |
1701 |
{ |
1702 |
while (hi >= fmap.size ()) |
1703 |
fmap.push_back (0); |
1704 |
|
1705 |
if (!fmap[hi]) |
1706 |
{ |
1707 |
fmap[hi] = (pagemap *)new pagemap; |
1708 |
memset (fmap[hi], 0xff, sizeof (pagemap)); |
1709 |
} |
1710 |
|
1711 |
(*fmap[hi])[unicode & 0xff] = i; |
1712 |
} |
1713 |
|
1714 |
return i; |
1715 |
} |
1716 |
|
1717 |
|
1718 |
|