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"
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
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 \
40 const struct rxvt_fallback_font {
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" },
50 { CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" },
51 { CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" },
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" },
68 { CS_KOI8_U, "xft::lang=ru" },
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" },
81 #if ENCODING_JP || ENCODING_JP_EXT
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" },
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" },
97 #if ENCODING_ZH || ENCODING_ZH_EXT
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" },
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" },
125 { CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
126 { CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
128 { CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" },
129 { CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" },
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.
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" },
141 // FreeMono is usually uglier than x fonts, so try after the others
142 { CS_UNICODE, "xft:FreeMono:autohint=true" },
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" },
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
160 #define NUM_EXTENT_TEST_CHARS (sizeof (extent_test_chars) / sizeof (extent_test_chars[0]))
162 #define dTermDisplay Display *disp = term->dpy
163 #define dTermGC GC gc = term->gc
165 /////////////////////////////////////////////////////////////////////////////
168 enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero)
170 uint8_t *buf = rxvt_temp_buf<uint8_t> (len);
175 uint32_t c = FROM_UNICODE (cs, *text++);
186 return (const char *)res;
189 static const XChar2b *
190 enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero)
192 XChar2b *buf = rxvt_temp_buf<XChar2b> (len);
197 uint32_t c = FROM_UNICODE (cs, *text++);
213 /////////////////////////////////////////////////////////////////////////////
215 rxvt_font::rxvt_font ()
216 : name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset)
221 rxvt_font::set_name (char *name)
223 if (this->name == name)
226 if (this->name) free (this->name); // let the compiler optimize
231 rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const
236 if (color == Color_bg || color == Color_transparent)
237 XClearArea (disp, d, x, y, w, h, false);
242 #ifdef HAVE_BG_PIXMAP
243 if (term->bgPixmap.pixmap && color >= 0 && term->pix_colors[color].c.color.alpha < 0x0ff00)
245 Picture dst = XftDrawPicture (d);
248 XClearArea (disp, d, x, y, w, h, false);
249 Picture solid_color_pict = XftDrawSrcPicture (d, &term->pix_colors[color].c);
250 XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, x, y, w, h);
256 XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h);
258 XSetForeground (disp, gc, term->pix_colors[color]);
259 XFillRectangle (disp, d, gc, x, y, w, h);
264 /////////////////////////////////////////////////////////////////////////////
266 struct rxvt_font_default : rxvt_font {
267 struct rxvt_fontset *fs;
269 rxvt_font_default (rxvt_fontset *fs)
275 rxvt_fontprop properties ()
279 p.width = p.height = 1;
280 p.ascent = rxvt_fontprop::unset;
281 p.weight = rxvt_fontprop::medium;
282 p.slant = rxvt_fontprop::roman;
287 bool load (const rxvt_fontprop &prop, bool force_prop)
289 width = 1; height = 1;
290 ascent = 1; descent = 0;
292 set_name (strdup ("built-in support font"));
297 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
301 if (unicode <= 0x001f)
304 if (unicode <= 0x007f)
307 if (unicode <= 0x009f)
310 #ifdef BUILTIN_GLYPHS
311 if (unicode >= 0x2500 && unicode <= 0x259f &&
312 !term->option (Opt_skipBuiltinGlyphs))
316 if (IS_COMPOSE (unicode))
321 case ZERO_WIDTH_CHAR:
329 void draw (rxvt_drawable &d, int x, int y,
330 const text_t *text, int len,
335 rxvt_font_default::draw (rxvt_drawable &d, int x, int y,
336 const text_t *text, int len,
342 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
344 XSetForeground (disp, gc, term->pix_colors[fg]);
351 const text_t *tp = text;
354 while (++text, --len && *text == NOCHAR)
357 int width = text - tp;
358 int fwidth = term->fwidth * width;
360 #ifdef BUILTIN_GLYPHS
361 if (0x2500 <= t && t <= 0x259f)
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);
369 int H = term->fheight;
374 for (int i = 0; i <= 8; i++)
376 x_[i] = x + ((W-1) * i + (i*7/8)) / 8;
377 y_[i] = y + ((H-1) * i + (i*7/8)) / 8;
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;
385 gcv.cap_style = CapButt;
387 XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv);
391 uint32_t command = *a++;
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];
404 XDrawLine (disp, d, gc, x1, y1, x2, y2);
407 case 1: // rectangle, possibly stippled
410 static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 };
412 gcv.fill_style = FillStippled;
413 gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2);
418 GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
422 XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1);
426 XFreePixmap (disp, gcv.stipple);
428 gcv.fill_style = FillSolid;
429 XChangeGC (disp, gc, GCFillStyle, &gcv);
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);
445 else if (IS_COMPOSE (t) && (cc = rxvt_composite[t]))
447 min_it (width, 2); // we only support wcwidth up to 2
453 rxvt_font *f1 = (*fs)[fs->find_font (cc->c1)];
454 f1->draw (d, x, y, chrs, width, fg, bg);
456 if (cc->c2 != NOCHAR)
460 // prefer font of first character, for no good reasons
462 rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful)
464 : (*fs)[fs->find_font (cc->c2)];
466 f2->draw (d, x, y, chrs, width, fg, Color_none);
474 case ZERO_WIDTH_CHAR:
479 XDrawRectangle (disp, d, gc, x + 2, y + 2,
480 fwidth - 4, term->fheight - 4);
487 /////////////////////////////////////////////////////////////////////////////
489 struct rxvt_font_x11 : rxvt_font {
490 rxvt_font_x11 () { f = 0; }
494 rxvt_fontprop properties ();
496 bool load (const rxvt_fontprop &prop, bool force_prop);
498 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
500 void draw (rxvt_drawable &d, int x, int y,
501 const text_t *text, int len,
504 bool slow; // wether this is a proportional font or has other funny characteristics
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);
515 rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const
519 if (XGetFontProperty (f, property, &value))
520 return XGetAtomName (term->dpy, value);
522 return repl ? strdup (repl) : 0;
526 rxvt_font_x11::properties ()
529 set_properties (p, f);
534 rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth)
536 p.width = width != rxvt_fontprop::unset ? width
537 : avgwidth ? (avgwidth + 1) / 10
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;
548 rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f)
550 unsigned long height;
553 if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height))
556 height = f->ascent + f->descent;
559 unsigned long avgwidth;
560 if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth))
563 char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium");
564 char *slant = get_property (f, term->xa [XA_SLANT], "r");
566 set_properties (p, height, weight, slant, avgwidth);
571 p.ascent = f->ascent;
577 rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name)
581 const char *comp[13];
583 for (const char *c = name; *c; c++)
586 comp[slashes++] = c + 1;
591 /* can we short-circuit the costly XLoadQueryFont? */
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]));
597 XFontStruct *f = XLoadQueryFont (disp, name);
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);
612 // fix the size of scalable fonts
614 replace_field (char **ptr, const char *name, int index, const char old, const char *replace)
617 const char *field, *end;
619 for (const char *c = name; *c; c++)
622 if (slashes == index)
625 if (slashes == index + 1)
632 if (slashes >= 13 && (!old || *field == old))
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);
644 *ptr = strdup (name);
651 rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop)
657 char field_str[64]; // enough for 128 bits
659 // first morph the font if required
666 f = XLoadQueryFont (disp, name);
671 char *new_name = get_property (f, XA_FONT, name);
676 rxvt_warn ("font '%s' has no FONT property, continuing without.", name);
682 if (prop.weight != rxvt_fontprop::unset)
684 replace_field (&fname, name, 2, 0,
685 prop.weight < rxvt_fontprop::bold
686 ? "medium" : "bold");
690 if (prop.slant != rxvt_fontprop::unset)
692 replace_field (&fname, name, 3, 0,
693 prop.slant < rxvt_fontprop::italic
694 ? "r" : "i"); // TODO: handle "o"blique, too
699 sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset
712 font_weight () { clear (); }
713 ~font_weight () { free (name); }
718 list = XListFonts (disp, name, 4000, &count);
725 font_weight *fonts = new font_weight[count];
727 for (int i = 0; i < count; i++)
734 if (replace_field (&fname, list[i], 6, '0', field_str))
735 diff += 10; // slightly penalize scalable fonts
739 if (replace_field (&fname, list[i], 11, '0', "0"))
740 diff += 300; // more heavily penalize what looks like scaled bitmap fonts
743 if (!set_properties (p, fname))
746 if (prop.height != rxvt_fontprop::unset
747 && p.height > prop.height) // weed out too large fonts
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);
755 fonts[i].name = fname;
756 fonts[i].diff = diff;
759 XFreeFontNames (list);
761 // this loop only iterates when the guessed font-size is too small
764 font_weight *best = fonts + count - 1;
766 for (font_weight *w = best; w-- > fonts; )
767 if (w->diff <= best->diff)
771 || !(f = XLoadQueryFont (disp, best->name)))
774 set_name (best->name);
778 descent = f->descent;
779 height = ascent + descent;
781 if (prop.height == rxvt_fontprop::unset
782 || height <= prop.height)
783 break; // font is ready for use
785 // PIXEL_SIZE small enough, but real height too large
794 char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0);
795 char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0);
797 if (registry && encoding)
800 snprintf (charset, 64, "%s-%s", registry, encoding);
802 cs = codeset_from_name (charset);
806 const char *charset = get_property (f, XA_FONT, 0);
813 if (*charset++ == '-' && !--count)
816 cs = codeset_from_name (charset);
822 if (cs == CS_UNICODE)
823 cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font
825 encm = f->min_byte1 != 0 || f->max_byte1 != 0;
826 enc2b = encm || f->max_char_or_byte2 > 255;
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;
837 int N = f->max_char_or_byte2 - f->min_char_or_byte2;
840 N += (f->max_byte1 - f->min_byte1)
841 * (f->max_char_or_byte2 - f->min_char_or_byte2 + 1);
845 if (f->per_char[N].width > width)
846 width = f->per_char[N].width;
855 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
857 if (FROM_UNICODE (cs, *t) == NOCHAR)
860 // ignore characters we wouldn't use anyways
862 if (!has_char (*t, &prop, careful))
865 XChar2b ch = { *t >> 8, *t };
868 int dir_ret, asc_ret, des_ret;
869 XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g);
871 int wcw = WCWIDTH (*t);
872 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
874 if (width < g.width) width = g.width;
877 if (cs == CS_UNKNOWN)
879 fprintf (stderr, "unable to deduce codeset, ignoring font '%s'\n", name);
885 #if 0 // do it per-character
886 if (prop && width > prop->width)
897 rxvt_font_x11::clear ()
901 XFreeFont (term->dpy, f);
907 rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
909 uint32_t ch = FROM_UNICODE (cs, unicode);
914 /* check wether the character exists in _this_ font. horrible. */
919 unsigned char byte1 = ch >> 8;
920 unsigned char byte2 = ch & 255;
922 if (byte1 < f->min_byte1 || byte1 > f->max_byte1
923 || byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2)
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;
931 xcs = f->per_char + N;
934 xcs = &f->max_bounds;
938 if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2)
942 xcs = f->per_char + (ch - f->min_char_or_byte2);
944 xcs = &f->max_bounds;
947 if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0
948 && xcs->ascent == 0 && xcs->descent == 0)
951 if (!prop || prop->width == rxvt_fontprop::unset)
954 // check wether character overlaps previous/next character
955 int w = xcs->rbearing - xcs->lbearing;
956 int wcw = max (WCWIDTH (unicode), 1);
958 careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw;
960 if (careful && !OVERLAP_OK (w, wcw, prop))
967 rxvt_font_x11::draw (rxvt_drawable &d, int x, int y,
968 const text_t *text, int len,
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 /.
979 bool slow = this->slow
980 || width != term->fwidth
981 || height != term->fheight;
983 int base = ascent; // sorry, incorrect: term->fbase;
986 v.foreground = term->pix_colors[fg];
991 const XChar2b *xc = enc_xchar2b (text, len, cs, slow);
993 if (bg == Color_bg && !slow)
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);
1001 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1003 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1009 if (xc->byte1 || xc->byte2)
1010 XDrawString16 (disp, d, gc, x, y + base, xc, 1);
1018 XDrawString16 (disp, d, gc, x, y + base, xc, len);
1023 const char *xc = enc_char (text, len, cs, slow);
1025 if (bg == Color_bg && !slow)
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);
1033 clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
1035 XChangeGC (disp, gc, GCForeground | GCFont, &v);
1042 XDrawString (disp, d, gc, x, y + base, xc, 1);
1050 XDrawString (disp, d, gc, x, y + base, xc, len);
1055 /////////////////////////////////////////////////////////////////////////////
1059 struct rxvt_font_xft : rxvt_font {
1060 rxvt_font_xft () { f = 0; }
1064 rxvt_fontprop properties ();
1066 bool load (const rxvt_fontprop &prop, bool force_prop);
1068 void draw (rxvt_drawable &d, int x, int y,
1069 const text_t *text, int len,
1072 bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
1079 rxvt_font_xft::clear ()
1083 XftFontClose (term->dpy, f);
1089 rxvt_font_xft::properties ()
1093 FT_Face face = XftLockFace (f);
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;
1109 rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop)
1115 FcPattern *p = FcNameParse ((FcChar8 *) name);
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);
1127 if (prop.weight != rxvt_fontprop::unset
1128 && (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch))
1129 FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
1131 if (prop.slant != rxvt_fontprop::unset
1132 && (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch))
1133 FcPatternAddInteger (p, FC_SLANT, prop.slant);
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);
1141 if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch)
1142 FcPatternAddBool (p, FC_MINSPACE, 1);
1144 // store generated name so iso14755 view gives better results
1145 set_name ((char *)FcNameUnparse (p));
1148 FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result);
1150 FcPatternDestroy (p);
1156 bool success = true;
1160 f = XftFontOpenPattern (disp, FcPatternDuplicate (match));
1168 FT_Face face = XftLockFace (f);
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);
1175 bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE;
1179 int glheight = height;
1181 for (uint16_t *t = extent_test_chars + NUM_EXTENT_TEST_CHARS; t-- > extent_test_chars; )
1185 if (cs != CS_UNICODE
1187 && FROM_UNICODE (cs, ch) == NOCHAR)
1190 // ignore characters we wouldn't use anyways
1192 if (!has_char (*t, &prop, careful))
1196 XftTextExtents16 (disp, f, &ch, 1, &g);
1200 int wcw = WCWIDTH (ch);
1201 if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
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;
1210 rxvt_warn ("unable to calculate font width for '%s', ignoring.\n", name);
1212 XftFontClose (disp, f);
1219 if (prop.height == rxvt_fontprop::unset
1220 || (height <= prop.height && glheight <= prop.height)
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++;
1232 ftheight -= height - prop.height;
1235 ftheight = prop.height - 1;
1237 XftFontClose (disp, f);
1238 FcPatternDel (match, FC_PIXEL_SIZE);
1239 FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight);
1242 FcPatternDestroy (match);
1244 #if 0 // do it per-character
1245 if (prop.width != rxvt_fontprop::unset && width > prop.width)
1256 rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
1260 if (!XftCharExists (term->dpy, f, unicode))
1263 if (!prop || prop->width == rxvt_fontprop::unset)
1266 // check character against base font bounding box
1267 FcChar32 ch = unicode;
1269 XftTextExtents32 (term->dpy, f, &ch, 1, &g);
1271 int w = g.width - g.x;
1272 int wcw = max (WCWIDTH (unicode), 1);
1274 careful = g.x > 0 || w > prop->width * wcw;
1276 if (careful && !OVERLAP_OK (w, wcw, prop))
1279 // this weeds out _totally_ broken fonts, or glyphs
1280 if (!OVERLAP_OK (g.xOff, wcw, prop))
1287 rxvt_font_xft::draw (rxvt_drawable &d, int x, int y,
1288 const text_t *text, int len,
1292 XftGlyphSpec *enc = (XftGlyphSpec *)rxvt_temp_buf (len * sizeof (XftGlyphSpec));
1293 XftGlyphSpec *ep = enc;
1298 int w = term->fwidth * len;
1299 int h = term->fheight;
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.
1305 bool buffered = bg >= Color_transparent;
1306 #ifdef FORCE_UNBUFFERED_XFT
1310 // cut trailing spaces
1311 while (len && text [len - 1] == ' ')
1314 int x_ = buffered ? 0 : x;
1315 int y_ = buffered ? 0 : y;
1319 int cwidth = term->fwidth;
1320 FcChar32 fc = *text++; len--;
1322 while (len && *text == NOCHAR)
1323 text++, len--, cwidth += term->fwidth;
1325 if (fc != ' ') // skip spaces
1327 FT_UInt glyph = XftCharIndex (disp, f, fc);
1328 XftGlyphExtents (disp, f, &glyph, 1, &extents);
1331 ep->x = x_ + (cwidth - extents.xOff >> 1);
1332 ep->y = y_ + ascent;
1334 if (extents.xOff == 0)
1335 ep->x = x_ + cwidth;
1347 bool back_rendered = false;
1348 rxvt_drawable &d2 = d.screen->scratch_drawable (w, h);
1350 #ifdef HAVE_BG_PIXMAP
1351 if (term->bgPixmap.pixmap)
1355 if (bg >= 0 && term->pix_colors[bg].is_opaque ())
1356 XftDrawRect (d2, &term->pix_colors[bg].c, 0, 0, w, h);
1358 dst = XftDrawPicture (d2);
1362 int src_x = x, src_y = y;
1364 if (term->bgPixmap.is_parentOrigin ())
1366 src_x += term->window_vt_x;
1367 src_y += term->window_vt_y;
1370 if (term->bgPixmap.pmap_width >= src_x+w
1371 && term->bgPixmap.pmap_height >= src_y+h)
1373 XCopyArea (disp, term->bgPixmap.pixmap, d2, gc,
1374 src_x, src_y, w, h, 0, 0);
1380 gcv.fill_style = FillTiled;
1381 gcv.tile = term->bgPixmap.pixmap;
1382 gcv.ts_x_origin = -src_x;
1383 gcv.ts_y_origin = -src_y;
1385 XChangeGC (disp, gc,
1386 GCTile | GCTileStipXOrigin | GCTileStipYOrigin | GCFillStyle,
1389 XFillRectangle (disp, d2, gc, 0, 0, w, h);
1391 gcv.fill_style = FillSolid;
1392 XChangeGC (disp, gc, GCFillStyle, &gcv);
1397 Picture solid_color_pict = XftDrawSrcPicture (d2, &term->pix_colors[bg].c);
1398 XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, 0, 0, w, h);
1401 back_rendered = true;
1407 XftDrawRect (d2, &term->pix_colors[bg < 0 ? Color_bg : bg].c, 0, 0, w, h);
1409 XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc);
1410 XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y);
1413 clear_rect (d, x, y, w, h, bg);
1417 clear_rect (d, x, y, w, h, bg);
1418 XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc);
1424 /////////////////////////////////////////////////////////////////////////////
1426 rxvt_fontset::rxvt_fontset (rxvt_term *term)
1427 : fontdesc (0), term (term)
1432 rxvt_fontset::~rxvt_fontset ()
1438 rxvt_fontset::clear ()
1440 prop.width = prop.height = prop.ascent = prop.weight = prop.slant
1441 = rxvt_fontprop::unset;
1444 for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++)
1447 for (pagemap **p = fmap.begin (); p != fmap.end (); p++)
1450 free (fontdesc); fontdesc = 0;
1454 fallback = fallback_fonts;
1458 rxvt_fontset::new_font (const char *name, codeset cs)
1462 if (!name || !*name)
1465 f = new rxvt_font_default (this);
1468 else if (!strncmp (name, "xft:", 4))
1471 f = new rxvt_font_xft ();
1474 else if (!strncmp (name, "x:", 2))
1477 f = new rxvt_font_x11;
1480 f = new rxvt_font_x11;
1483 f->set_name (strdup (name));
1491 /////////////////////////////////////////////////////////////////////////////
1494 rxvt_fontset::add_fonts (const char *desc)
1503 while (*desc && *desc <= ' ')
1506 codeset cs = CS_UNICODE;
1511 const char *extra = ++desc; // not yet used
1513 desc = strchr (desc, ']');
1517 rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n");
1521 memcpy (spec, extra, min (desc - extra, 255));
1522 spec[min (desc - extra, 255)] = 0;
1524 if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1))
1525 cs = codeset_from_name (spec + sizeof ("codeset=") - 1);
1527 rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec);
1530 while (*desc <= ' ') desc++;
1533 end = strchr (desc, ',');
1535 end = desc + strlen (desc);
1537 if (end - desc < 511)
1539 memcpy (buf, desc, end - desc);
1540 buf[end - desc] = 0;
1542 fonts.push_back (new_font (buf, cs));
1545 rxvt_warn ("fontset element too long (>511 bytes), ignored.");
1554 rxvt_fontset::realize_font (int i)
1556 if (i < 0 || i >= fonts.size ())
1559 if (fonts[i]->loaded)
1562 fonts[i]->loaded = true;
1564 if (!fonts[i]->load (prop, force_prop))
1566 fonts[i]->cs = CS_UNKNOWN;
1574 rxvt_fontset::populate (const char *desc)
1578 fontdesc = strdup (desc);
1580 fonts.push_back (new_font (0, CS_UNICODE));
1589 rxvt_fontset::find_font (const char *name) const
1591 for (rxvt_font *const *f = fonts.begin (); f < fonts.end (); f++)
1592 if ((*f)->name && !strcmp ((*f)->name, name))
1593 return f - fonts.begin ();
1599 rxvt_fontset::find_font (unicode_t unicode)
1601 if (unicode >= 1<<20)
1604 unicode_t hi = unicode >> 8;
1606 if (hi < fmap.size ()
1608 && (*fmap[hi])[unicode & 0xff] != 0xff)
1609 return (*fmap[hi])[unicode & 0xff];
1613 for (i = 0; i < fonts.size (); i++)
1615 rxvt_font *f = fonts[i];
1619 if (FROM_UNICODE (f->cs, unicode) == NOCHAR)
1622 if (!realize_font (i))
1625 if (prop.ascent != rxvt_fontprop::unset)
1626 max_it (f->ascent, prop.ascent);
1629 if (f->cs == CS_UNKNOWN)
1633 if (f->has_char (unicode, &prop, careful))
1642 if (i == fonts.size () - 1)
1646 // search through the fallback list
1647 fonts.push_back (new_font (fallback->name, fallback->cs));
1652 // try to find a new font.
1653 // only xft currently supported, as there is no
1654 // way to configure this and xft is easier to hack in,
1655 // while x11 has more framework in place already.
1656 // TODO: this is a real resource hog, xft takes ages(?)
1657 #if XFT && USE_SLOW_LOOKUP
1658 // grab the first xft font that seems suitable
1659 FcPattern *p = FcPatternCreate ();
1661 FcCharSet *s = FcCharSetCreate ();
1662 FcCharSetAddChar (s, unicode);
1663 FcPatternAddCharSet (p, FC_CHARSET, s);
1664 // charsets don't help that much, as xft might return
1665 // a non-matching font even if a better font is available :/
1667 x x x x TODO prop might have unset contents
1668 FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height);
1669 FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
1670 FcPatternAddInteger (p, FC_SLANT, prop.slant);
1671 FcPatternAddBool (p, FC_MINSPACE, 1);
1672 //FcPatternAddBool (p, FC_ANTIALIAS, 1);
1675 FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result);
1677 FcPatternDestroy (p);
1681 FcPatternDel (match, FC_CHARSET);
1682 char *font = (char *)FcNameUnparse (match);
1683 FcPatternDestroy (match);
1685 if (find_font (font) < 0)
1687 char fontname[4096];
1688 sprintf (fontname, "xft:%-.4090s", font);
1690 fonts.push_back (new_font (fontname, CS_UNICODE));
1700 /* we must return SOME font */
1704 // found a font, cache it
1707 while (hi >= fmap.size ())
1712 fmap[hi] = (pagemap *)new pagemap;
1713 memset (fmap[hi], 0xff, sizeof (pagemap));
1716 (*fmap[hi])[unicode & 0xff] = i;