1 /*----------------------------------------------------------------------*
3 *----------------------------------------------------------------------*
4 * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
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.
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.
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 *---------------------------------------------------------------------*/
22 #include "../config.h"
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
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 \
41 const struct rxvt_fallback_font {
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" },
51 { CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" },
52 { CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" },
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" },
69 { CS_KOI8_U, "xft::lang=ru" },
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" },
82 #if ENCODING_JP || ENCODING_JP_EXT
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" },
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" },
98 #if ENCODING_ZH || ENCODING_ZH_EXT
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" },
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" },
126 { CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
127 { CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
129 { CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" },
130 { CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" },
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.
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" },
142 // FreeMono is usually uglier than x fonts, so try after the others
143 { CS_UNICODE, "xft:FreeMono:autohint=true" },
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" },
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
161 #define NUM_EXTENT_TEST_CHARS (sizeof (extent_test_chars) / sizeof (extent_test_chars[0]))
163 #define dTermDisplay Display *disp = term->dpy
164 #define dTermGC GC gc = term->gc
166 /////////////////////////////////////////////////////////////////////////////
169 enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero)
171 uint8_t *buf = rxvt_temp_buf<uint8_t> (len);
176 uint32_t c = FROM_UNICODE (cs, *text++);
187 return (const char *)res;
190 static const XChar2b *
191 enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero)
193 XChar2b *buf = rxvt_temp_buf<XChar2b> (len);
198 uint32_t c = FROM_UNICODE (cs, *text++);
214 /////////////////////////////////////////////////////////////////////////////
216 rxvt_font::rxvt_font ()
217 : name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset)
222 rxvt_font::set_name (char *name)
224 if (this->name == name)
227 if (this->name) free (this->name); // let the compiler optimize
232 rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const
237 if (color == Color_bg || color == Color_transparent)
238 XClearArea (disp, d, x, y, w, h, false);
243 #ifdef HAVE_BG_PIXMAP
244 if (term->bgPixmap.pixmap && color >= 0 && term->pix_colors[color].c.color.alpha < 0x0ff00)
246 Picture dst = XftDrawPicture (d);
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);
257 XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h);
259 XSetForeground (disp, gc, term->pix_colors[color]);
260 XFillRectangle (disp, d, gc, x, y, w, h);
265 /////////////////////////////////////////////////////////////////////////////
267 struct rxvt_font_default : rxvt_font {
268 struct rxvt_fontset *fs;
270 rxvt_font_default (rxvt_fontset *fs)
276 rxvt_fontprop properties ()
280 p.width = p.height = 1;
281 p.ascent = rxvt_fontprop::unset;
282 p.weight = rxvt_fontprop::medium;
283 p.slant = rxvt_fontprop::roman;
288 bool load (const rxvt_fontprop &prop, bool force_prop)
290 width = 1; height = 1;
291 ascent = 1; descent = 0;
293 set_name (strdup ("built-in support font"));
298 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
302 if (unicode <= 0x001f)
305 if (unicode <= 0x007f)
308 if (unicode <= 0x009f)
311 #ifdef BUILTIN_GLYPHS
312 if (unicode >= 0x2500 && unicode <= 0x259f &&
313 !term->option (Opt_skipBuiltinGlyphs))
317 if (IS_COMPOSE (unicode))
322 case ZERO_WIDTH_CHAR:
330 void draw (rxvt_drawable &d, int x, int y,
331 const text_t *text, int len,
336 rxvt_font_default::draw (rxvt_drawable &d, int x, int y,
337 const text_t *text, int len,
343 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
345 XSetForeground (disp, gc, term->pix_colors[fg]);
352 const text_t *tp = text;
355 while (++text, --len && *text == NOCHAR)
358 int width = text - tp;
359 int fwidth = term->fwidth * width;
361 #ifdef BUILTIN_GLYPHS
362 if (0x2500 <= t && t <= 0x259f)
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);
370 int H = term->fheight;
375 for (int i = 0; i <= 8; i++)
377 x_[i] = x + ((W-1) * i + (i*7/8)) / 8;
378 y_[i] = y + ((H-1) * i + (i*7/8)) / 8;
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;
386 gcv.cap_style = CapButt;
388 XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv);
392 uint32_t command = *a++;
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];
405 XDrawLine (disp, d, gc, x1, y1, x2, y2);
408 case 1: // rectangle, possibly stippled
411 static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 };
413 gcv.fill_style = FillStippled;
414 gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2);
419 GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
423 XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1);
427 XFreePixmap (disp, gcv.stipple);
429 gcv.fill_style = FillSolid;
430 XChangeGC (disp, gc, GCFillStyle, &gcv);
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);
446 else if (IS_COMPOSE (t) && (cc = rxvt_composite[t]))
448 min_it (width, 2); // we only support wcwidth up to 2
454 rxvt_font *f1 = (*fs)[fs->find_font (cc->c1)];
455 f1->draw (d, x, y, chrs, width, fg, bg);
457 if (cc->c2 != NOCHAR)
461 // prefer font of first character, for no good reasons
463 rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful)
465 : (*fs)[fs->find_font (cc->c2)];
467 f2->draw (d, x, y, chrs, width, fg, Color_none);
475 case ZERO_WIDTH_CHAR:
480 XDrawRectangle (disp, d, gc, x + 2, y + 2,
481 fwidth - 4, term->fheight - 4);
488 /////////////////////////////////////////////////////////////////////////////
490 struct rxvt_font_x11 : rxvt_font {
491 rxvt_font_x11 () { f = 0; }
495 rxvt_fontprop properties ();
497 bool load (const rxvt_fontprop &prop, bool force_prop);
499 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
501 void draw (rxvt_drawable &d, int x, int y,
502 const text_t *text, int len,
505 bool slow; // wether this is a proportional font or has other funny characteristics
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);
516 rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const
520 if (XGetFontProperty (f, property, &value))
521 return XGetAtomName (term->dpy, value);
523 return repl ? strdup (repl) : 0;
527 rxvt_font_x11::properties ()
530 set_properties (p, f);
535 rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth)
537 p.width = width != rxvt_fontprop::unset ? width
538 : avgwidth ? (avgwidth + 1) / 10
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;
549 rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f)
551 unsigned long height;
554 if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height))
557 height = f->ascent + f->descent;
560 unsigned long avgwidth;
561 if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth))
564 char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium");
565 char *slant = get_property (f, term->xa [XA_SLANT], "r");
567 set_properties (p, height, weight, slant, avgwidth);
572 p.ascent = f->ascent;
578 rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name)
582 const char *comp[13];
584 for (const char *c = name; *c; c++)
587 comp[slashes++] = c + 1;
592 /* can we short-circuit the costly XLoadQueryFont? */
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]));
598 XFontStruct *f = XLoadQueryFont (disp, name);
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);
613 // fix the size of scalable fonts
615 replace_field (char *buf, const char *name, int index, const char old, const char *replace)
618 const char *field, *end;
620 for (const char *c = name; *c; c++)
623 if (slashes == index)
626 if (slashes == index + 1)
633 if (slashes >= 13 && (!old || *field == old))
635 // TODO: check for overflow in font-name
636 strncpy (buf, name, field - name);
638 strcpy (buf, replace);
652 rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop)
658 char field_str[64]; // enough for 128 bits
660 // first morph the font if required
667 f = XLoadQueryFont (disp, name);
672 char *new_name = get_property (f, XA_FONT, name);
677 rxvt_warn ("font '%s' has no FONT property, continuing without.", name);
683 if (prop.weight != rxvt_fontprop::unset)
685 replace_field (fname, name, 2, 0,
686 prop.weight < rxvt_fontprop::bold
687 ? "medium" : "bold");
688 set_name (strdup (fname));
691 if (prop.slant != rxvt_fontprop::unset)
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));
700 sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset
713 font_weight () { clear (); }
714 ~font_weight () { free (name); }
719 list = XListFonts (disp, name, 4000, &count);
726 font_weight *fonts = new font_weight[count];
728 for (int i = 0; i < count; i++)
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
740 if (!set_properties (p, fname))
743 if (prop.height != rxvt_fontprop::unset
744 && p.height > prop.height) // weed out too large fonts
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);
752 fonts[i].name = strdup (fname);
753 fonts[i].diff = diff;
756 XFreeFontNames (list);
758 // this loop only iterates when the guessed font-size is too small
761 font_weight *best = fonts + count - 1;
763 for (font_weight *w = best; w-- > fonts; )
764 if (w->diff <= best->diff)
768 || !(f = XLoadQueryFont (disp, best->name)))
771 set_name (best->name);
775 descent = f->descent;
776 height = ascent + descent;
778 if (prop.height == rxvt_fontprop::unset
779 || height <= prop.height)
780 break; // font is ready for use
782 // PIXEL_SIZE small enough, but real height too large
791 char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0);
792 char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0);
794 if (registry && encoding)
797 snprintf (charset, 64, "%s-%s", registry, encoding);
799 cs = codeset_from_name (charset);
803 const char *charset = get_property (f, XA_FONT, 0);
810 if (*charset++ == '-' && !--count)
813 cs = codeset_from_name (charset);
819 if (cs == CS_UNICODE)
820 cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font
822 encm = f->min_byte1 != 0 || f->max_byte1 != 0;
823 enc2b = encm || f->max_char_or_byte2 > 255;
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;
834 int N = f->max_char_or_byte2 - f->min_char_or_byte2;
837 N += (f->max_byte1 - f->min_byte1)
838 * (f->max_char_or_byte2 - f->min_char_or_byte2 + 1);
842 if (f->per_char[N].width > width)
843 width = f->per_char[N].width;
852 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
854 if (FROM_UNICODE (cs, *t) == NOCHAR)
857 // ignore characters we wouldn't use anyways
859 if (!has_char (*t, &prop, careful))
862 XChar2b ch = { *t >> 8, *t };
865 int dir_ret, asc_ret, des_ret;
866 XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g);
868 int wcw = WCWIDTH (*t);
869 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
871 if (width < g.width) width = g.width;
874 if (cs == CS_UNKNOWN)
876 fprintf (stderr, "unable to deduce codeset, ignoring font '%s'\n", name);
882 #if 0 // do it per-character
883 if (prop && width > prop->width)
894 rxvt_font_x11::clear ()
898 XFreeFont (term->dpy, f);
904 rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
906 uint32_t ch = FROM_UNICODE (cs, unicode);
911 /* check wether the character exists in _this_ font. horrible. */
916 unsigned char byte1 = ch >> 8;
917 unsigned char byte2 = ch & 255;
919 if (byte1 < f->min_byte1 || byte1 > f->max_byte1
920 || byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2)
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;
928 xcs = f->per_char + N;
931 xcs = &f->max_bounds;
935 if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2)
939 xcs = f->per_char + (ch - f->min_char_or_byte2);
941 xcs = &f->max_bounds;
944 if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0
945 && xcs->ascent == 0 && xcs->descent == 0)
948 if (!prop || prop->width == rxvt_fontprop::unset)
951 // check wether character overlaps previous/next character
952 int w = xcs->rbearing - xcs->lbearing;
953 int wcw = max (WCWIDTH (unicode), 1);
955 careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw;
957 if (careful && !OVERLAP_OK (w, wcw, prop))
964 rxvt_font_x11::draw (rxvt_drawable &d, int x, int y,
965 const text_t *text, int len,
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 /.
976 bool slow = this->slow
977 || width != term->fwidth
978 || height != term->fheight;
980 int base = ascent; // sorry, incorrect: term->fbase;
983 v.foreground = term->pix_colors[fg];
988 const XChar2b *xc = enc_xchar2b (text, len, cs, slow);
990 if (bg == Color_bg && !slow)
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);
998 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1000 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1006 if (xc->byte1 || xc->byte2)
1007 XDrawString16 (disp, d, gc, x, y + base, xc, 1);
1015 XDrawString16 (disp, d, gc, x, y + base, xc, len);
1020 const char *xc = enc_char (text, len, cs, slow);
1022 if (bg == Color_bg && !slow)
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);
1030 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1032 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1039 XDrawString (disp, d, gc, x, y + base, xc, 1);
1047 XDrawString (disp, d, gc, x, y + base, xc, len);
1052 /////////////////////////////////////////////////////////////////////////////
1056 struct rxvt_font_xft : rxvt_font {
1057 rxvt_font_xft () { f = 0; }
1061 rxvt_fontprop properties ();
1063 bool load (const rxvt_fontprop &prop, bool force_prop);
1065 void draw (rxvt_drawable &d, int x, int y,
1066 const text_t *text, int len,
1069 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
1076 rxvt_font_xft::clear ()
1080 XftFontClose (term->dpy, f);
1086 rxvt_font_xft::properties ()
1090 FT_Face face = XftLockFace (f);
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;
1106 rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop)
1112 FcPattern *p = FcNameParse ((FcChar8 *) name);
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);
1124 if (prop.weight != rxvt_fontprop::unset
1125 && (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch))
1126 FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
1128 if (prop.slant != rxvt_fontprop::unset
1129 && (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch))
1130 FcPatternAddInteger (p, FC_SLANT, prop.slant);
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);
1138 if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch)
1139 FcPatternAddBool (p, FC_MINSPACE, 1);
1141 // store generated name so iso14755 view gives better results
1142 set_name ((char *)FcNameUnparse (p));
1145 FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result);
1147 FcPatternDestroy (p);
1153 bool success = true;
1157 f = XftFontOpenPattern (disp, FcPatternDuplicate (match));
1165 FT_Face face = XftLockFace (f);
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);
1172 bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE;
1176 int glheight = height;
1178 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
1182 if (cs != CS_UNICODE
1184 && FROM_UNICODE (cs, ch) == NOCHAR)
1187 // ignore characters we wouldn't use anyways
1189 if (!has_char (*t, &prop, careful))
1193 XftTextExtents16 (disp, f, &ch, 1, &g);
1197 int wcw = WCWIDTH (ch);
1198 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
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;
1207 rxvt_warn ("unable to calculate font width for '%s', ignoring.\n", name);
1209 XftFontClose (disp, f);
1216 if (prop.height == rxvt_fontprop::unset
1217 || (height <= prop.height && glheight <= prop.height)
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++;
1229 ftheight -= height - prop.height;
1232 ftheight = prop.height - 1;
1234 XftFontClose (disp, f);
1235 FcPatternDel (match, FC_PIXEL_SIZE);
1236 FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight);
1239 FcPatternDestroy (match);
1241 #if 0 // do it per-character
1242 if (prop.width != rxvt_fontprop::unset && width > prop.width)
1253 rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
1257 if (!XftCharExists (term->dpy, f, unicode))
1260 if (!prop || prop->width == rxvt_fontprop::unset)
1263 // check character against base font bounding box
1264 FcChar32 ch = unicode;
1266 XftTextExtents32 (term->dpy, f, &ch, 1, &g);
1268 int w = g.width - g.x;
1269 int wcw = max (WCWIDTH (unicode), 1);
1271 careful = g.x > 0 || w > prop->width * wcw;
1273 if (careful && !OVERLAP_OK (w, wcw, prop))
1276 // this weeds out _totally_ broken fonts, or glyphs
1277 if (!OVERLAP_OK (g.xOff, wcw, prop))
1284 rxvt_font_xft::draw (rxvt_drawable &d, int x, int y,
1285 const text_t *text, int len,
1289 XftGlyphSpec *enc = (XftGlyphSpec *)rxvt_temp_buf (len * sizeof (XftGlyphSpec));
1290 XftGlyphSpec *ep = enc;
1295 int w = term->fwidth * len;
1296 int h = term->fheight;
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.
1302 bool buffered = true
1303 #ifdef FORCE_UNBUFFERED_XFT
1307 // cut trailing spaces
1308 while (len && text [len - 1] == ' ')
1311 int x_ = buffered ? 0 : x;
1312 int y_ = buffered ? 0 : y;
1316 int cwidth = term->fwidth;
1317 FcChar32 fc = *text++; len--;
1319 while (len && *text == NOCHAR)
1320 text++, len--, cwidth += term->fwidth;
1322 if (fc != ' ') // skip spaces
1324 FT_UInt glyph = XftCharIndex (disp, f, fc);
1325 XftGlyphExtents (disp, f, &glyph, 1, &extents);
1328 ep->x = x_ + (cwidth - extents.xOff >> 1);
1329 ep->y = y_ + ascent;
1331 if (extents.xOff == 0)
1332 ep->x = x_ + cwidth;
1342 bool back_rendered = false;
1345 rxvt_drawable &d2 = d.screen->scratch_drawable (w, h);
1347 #ifdef HAVE_BG_PIXMAP
1348 if (term->bgPixmap.pixmap)
1352 if (bg >= 0 && term->pix_colors[bg].c.color.alpha < 0x0ff00)
1353 dst = XftDrawPicture (d2);
1355 if (bg < 0 || dst != 0)
1357 int src_x = x, src_y = y ;
1359 if (term->bgPixmap.is_parentOrigin ())
1361 src_x += term->window_vt_x;
1362 src_y += term->window_vt_y;
1365 if (term->bgPixmap.pmap_width >= src_x+w
1366 && term->bgPixmap.pmap_height >= src_y+h)
1368 XCopyArea (disp, term->bgPixmap.pixmap, d2, gc,
1369 src_x, src_y, w, h, 0, 0);
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;
1380 XChangeGC (disp, gc,
1381 GCTile | GCTileStipXOrigin | GCTileStipYOrigin | GCFillStyle,
1384 XFillRectangle (disp, d2, gc, 0, 0, w, h);
1386 gcv.fill_style = FillSolid;
1387 XChangeGC (disp, gc, GCFillStyle, &gcv);
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);
1396 back_rendered = true;
1401 if (bg >= 0 && !back_rendered)
1402 XftDrawRect (d2, &term->pix_colors[bg].c, 0, 0, w, h);
1404 XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc);
1405 XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y);
1408 clear_rect (d, x, y, w, h, bg);
1412 clear_rect (d, x, y, w, h, bg);
1413 XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc);
1419 /////////////////////////////////////////////////////////////////////////////
1421 rxvt_fontset::rxvt_fontset (rxvt_term *term)
1422 : fontdesc (0), term (term)
1427 rxvt_fontset::~rxvt_fontset ()
1433 rxvt_fontset::clear ()
1435 prop.width = prop.height = prop.ascent = prop.weight = prop.slant
1436 = rxvt_fontprop::unset;
1439 for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++)
1442 for (pagemap **p = fmap.begin (); p != fmap.end (); p++)
1445 free (fontdesc); fontdesc = 0;
1449 fallback = fallback_fonts;
1453 rxvt_fontset::new_font (const char *name, codeset cs)
1457 if (!name || !*name)
1460 f = new rxvt_font_default (this);
1463 else if (!strncmp (name, "xft:", 4))
1466 f = new rxvt_font_xft ();
1469 else if (!strncmp (name, "x:", 2))
1472 f = new rxvt_font_x11;
1475 f = new rxvt_font_x11;
1478 f->set_name (strdup (name));
1486 /////////////////////////////////////////////////////////////////////////////
1489 rxvt_fontset::add_fonts (const char *desc)
1498 while (*desc && *desc <= ' ')
1501 codeset cs = CS_UNICODE;
1506 const char *extra = ++desc; // not yet used
1508 desc = strchr (desc, ']');
1512 rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n");
1516 memcpy (spec, extra, min (desc - extra, 255));
1517 spec[min (desc - extra, 255)] = 0;
1519 if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1))
1520 cs = codeset_from_name (spec + sizeof ("codeset=") - 1);
1522 rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec);
1525 while (*desc <= ' ') desc++;
1528 end = strchr (desc, ',');
1530 end = desc + strlen (desc);
1532 if (end - desc < 511)
1534 strncpy (buf, desc, end - desc);
1535 buf[end - desc] = 0;
1537 fonts.push_back (new_font (buf, cs));
1540 rxvt_warn ("fontset element too long (>511 bytes), ignored.");
1549 rxvt_fontset::realize_font (int i)
1551 if (i < 0 || i >= fonts.size ())
1554 if (fonts[i]->loaded)
1557 fonts[i]->loaded = true;
1559 if (!fonts[i]->load (prop, force_prop))
1561 fonts[i]->cs = CS_UNKNOWN;
1569 rxvt_fontset::populate (const char *desc)
1573 fontdesc = strdup (desc);
1575 fonts.push_back (new_font (0, CS_UNICODE));
1584 rxvt_fontset::find_font (const char *name) const
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 ();
1594 rxvt_fontset::find_font (unicode_t unicode)
1596 if (unicode >= 1<<20)
1599 unicode_t hi = unicode >> 8;
1601 if (hi < fmap.size ()
1603 && (*fmap[hi])[unicode & 0xff] != 0xff)
1604 return (*fmap[hi])[unicode & 0xff];
1608 for (i = 0; i < fonts.size (); i++)
1610 rxvt_font *f = fonts[i];
1614 if (FROM_UNICODE (f->cs, unicode) == NOCHAR)
1617 if (!realize_font (i))
1620 if (prop.ascent != rxvt_fontprop::unset)
1621 max_it (f->ascent, prop.ascent);
1624 if (f->cs == CS_UNKNOWN)
1628 if (f->has_char (unicode, &prop, careful))
1637 if (i == fonts.size () - 1)
1641 // search through the fallback list
1642 fonts.push_back (new_font (fallback->name, fallback->cs));
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 ();
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 :/
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);
1670 FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result);
1672 FcPatternDestroy (p);
1676 FcPatternDel (match, FC_CHARSET);
1677 char *font = (char *)FcNameUnparse (match);
1678 FcPatternDestroy (match);
1680 if (find_font (font) < 0)
1682 char fontname[4096];
1683 sprintf (fontname, "xft:%-.4090s", font);
1685 fonts.push_back (new_font (fontname, CS_UNICODE));
1695 /* we must return SOME font */
1699 // found a font, cache it
1702 while (hi >= fmap.size ())
1707 fmap[hi] = (pagemap *)new pagemap;
1708 memset (fmap[hi], 0xff, sizeof (pagemap));
1711 (*fmap[hi])[unicode & 0xff] = i;