/rxvt-unicode-9.15/rxvt-unicode-9.15-256color-ml/src/rxvtfont.C
C++ | 1799 lines | 1338 code | 382 blank | 79 comment | 339 complexity | bcd9680e693655aa6b47619cd8ece770 MD5 | raw file
Possible License(s): GPL-2.0
- /*----------------------------------------------------------------------*
- * File: rxvtfont.C
- *----------------------------------------------------------------------*
- * Copyright (c) 2003-2008 Marc Lehmann <schmorp@schmorp.de>
- * - original version.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *---------------------------------------------------------------------*/
- #include "../config.h"
- #include "rxvt.h"
- #include "rxvtutil.h"
- #include "rxvtfont.h"
- #include <stdlib.h>
- #include <inttypes.h>
- #if XFT
- # include <fontconfig/fontconfig.h>
- #endif
- #define MAX_OVERLAP_ROMAN (8 + 2) // max. character width in 8ths of the base width
- #define MAX_OVERLAP_ITALIC (8 + 3) // max. overlap for italic fonts
- #define OVERLAP_OK(w,wcw,prop) ((w) <= ( \
- (prop)->slant >= rxvt_fontprop::italic \
- ? ((prop)->width * (wcw) * MAX_OVERLAP_ITALIC + 7) >> 3 \
- : ((prop)->width * (wcw) * MAX_OVERLAP_ROMAN + 7) >> 3 \
- ))
- static const struct rxvt_fallback_font {
- codeset cs;
- const char *name;
- } fallback_fonts[] = {
- { CS_ISO8859_1, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-1" },
- { CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-15" },
- { CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-fcd8859-15" },
- #if ENCODING_EU
- // cyrillic
- { CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" },
- { CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" },
- { CS_ISO8859_2, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-2" },
- { CS_ISO8859_3, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-3" },
- { CS_ISO8859_4, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-4" },
- { CS_ISO8859_5, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-5" },
- { CS_ISO8859_6, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-6" },
- { CS_ISO8859_7, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-7" },
- { CS_ISO8859_8, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-8" },
- { CS_ISO8859_9, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-9" },
- { CS_ISO8859_10, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-10" },
- { CS_ISO8859_11, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-11" },
- { CS_ISO8859_13, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-13" },
- { CS_ISO8859_14, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-14" },
- { CS_ISO8859_16, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-16" },
- # if XFT
- { CS_KOI8_U, "xft::lang=ru" },
- { CS_ISO8859_5, "xft::lang=ru" },
- { CS_ISO8859_6, "xft::lang=ar" },
- { CS_ISO8859_7, "xft::lang=el" },
- { CS_ISO8859_8, "xft::lang=he" },
- { CS_ISO8859_9, "xft::lang=tr" },
- { CS_ISO8859_10, "xft::lang=se" },
- { CS_ISO8859_11, "xft::lang=th" },
- # endif
- #endif
- // japanese
- #if ENCODING_JP || ENCODING_JP_EXT
- # if XFT
- // prefer xft for complex scripts
- { CS_JIS0208_1990_0, "xft:Sazanami Mincho:antialias=false" },
- { CS_JIS0208_1990_0, "xft:Kochi Gothic:antialias=false" },
- { CS_JIS0208_1990_0, "xft:Mincho:antialias=false" },
- { CS_JIS0208_1990_0, "xft::lang=ja:antialias=false" },
- # endif
- { CS_JIS0201_1976_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0201*-0" },
- { CS_JIS0208_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0208*-0" },
- { CS_JIS0212_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0212*-0" },
- { CS_JIS0201_1976_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0201*-0" },
- { CS_JIS0208_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0208*-0" },
- { CS_JIS0212_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0212*-0" },
- #endif
- #if ENCODING_ZH || ENCODING_ZH_EXT
- # if XFT
- { CS_GBK_0, "xft:AR PL KaitiM GB" },
- { CS_GBK_0, "xft:AR PL SungtiL GB" },
- { CS_GBK_0, "xft::lang=zh" },
- { CS_BIG5_EXT, "xft:AR PL Mingti2L Big5" },
- { CS_BIG5_EXT, "xft:AR PL KaitiM Big5" },
- { CS_GB2312_1980_0, "xft:AR PL KaitiM GB" },
- { CS_GB2312_1980_0, "xft:AR PL SungtiL GB" },
- { CS_GB2312_1980_0, "xft::lang=zh" },
- # endif
- { CS_GBK_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gbk*-0" },
- { CS_BIG5, "-*-*-*-*-*-*-*-*-*-*-c-*-big5-0" },
- { CS_BIG5_PLUS, "-*-*-*-*-*-*-*-*-*-*-c-*-big5p-0" },
- { CS_BIG5_EXT, "-*-*-*-*-*-*-*-*-*-*-c-*-big5.eten-0" },
- { CS_GB2312_1980_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" },
- { CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" },
- { CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-1" },
- { CS_CNS11643_1992_2, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-2" },
- { CS_CNS11643_1992_3, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-3" },
- { CS_CNS11643_1992_4, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-4" },
- { CS_CNS11643_1992_5, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-5" },
- { CS_CNS11643_1992_6, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-6" },
- { CS_CNS11643_1992_7, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-7" },
- { CS_CNS11643_1992_F, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-f" },
- #endif
- #if ENCODING_KR
- { CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
- { CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" },
- # if XFT
- { CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" },
- { CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" },
- # endif
- #endif
- //{ CS_UNICODE, "-*-unifont-*-*-*-*-*-*-*-*-c-*-iso10646-1" }, // this gem of a font has actual dotted circles within the combining character glyphs.
- #if XFT
- { CS_UNICODE, "xft:Bitstream Vera Sans Mono:antialias=false:autohint=true" },
- { CS_UNICODE, "xft:Courier New:antialias=false:autohint=true" },
- { CS_UNICODE, "xft:Andale Mono:antialias=false:autohint=false" },
- { CS_UNICODE, "xft:Arial Unicode MS:antialias=false:autohint=false" },
- // FreeMono is usually uglier than x fonts, so try after the others
- { CS_UNICODE, "xft:FreeMono:autohint=true" },
- #endif
- // generic font fallback, put this last, as many iso10646 fonts have extents
- // specified for all glyphs in the range they cover, but most are simply empty
- //{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-c-*-iso10646-1" },
- //{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-m-*-iso10646-1" },
- { CS_UNKNOWN, 0 }
- };
- // these characters are used to guess the font height and width
- // pango uses a similar algorithm and doesn't trust the font either.
- static uint16_t extent_test_chars[] = {
- '0', '1', '8', 'a', 'd', 'x', 'm', 'y', 'g', 'W', 'X', '\'', '_',
- 0x00cd, 0x00d5, 0x0114, 0x0177, 0x0643, // 葉???
- 0x304c, 0x672c, // ??
- };
- #define dTermDisplay Display *disp = term->dpy
- #define dTermGC GC gc = term->gc
- /////////////////////////////////////////////////////////////////////////////
- static const char *
- enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero)
- {
- uint8_t *buf = rxvt_temp_buf<uint8_t> (len);
- uint8_t *res = buf;
- while (len--)
- {
- uint32_t c = FROM_UNICODE (cs, *text++);
- if (c == NOCHAR)
- {
- c = 0;
- zero = true;
- }
- *buf++ = c;
- }
- return (const char *)res;
- }
- static const XChar2b *
- enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero)
- {
- XChar2b *buf = rxvt_temp_buf<XChar2b> (len);
- XChar2b *res = buf;
- while (len--)
- {
- uint32_t c = FROM_UNICODE (cs, *text++);
- if (c == NOCHAR)
- {
- c = 0;
- zero = true;
- }
- buf->byte1 = c >> 8;
- buf->byte2 = c;
- buf++;
- }
- return res;
- }
- /////////////////////////////////////////////////////////////////////////////
- rxvt_font::rxvt_font ()
- : name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset)
- {
- }
- void
- rxvt_font::set_name (char *name_)
- {
- if (name == name_)
- return;
- if (name) free (name); // let the compiler optimize
- name = name_;
- }
- void
- rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const
- {
- dTermDisplay;
- dTermGC;
- if (color == Color_bg || color == Color_transparent)
- XClearArea (disp, d, x, y, w, h, false);
- else if (color >= 0)
- {
- #if XFT
- Picture dst;
- # ifdef HAVE_BG_PIXMAP
- if (term->bg_pixmap
- && !term->pix_colors[color].is_opaque ()
- && ((dst = XftDrawPicture (d))))
- {
- XClearArea (disp, d, x, y, w, h, false);
- Picture solid_color_pict = XftDrawSrcPicture (d, &term->pix_colors[color].c);
- XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, x, y, w, h);
- }
- else
- # endif
- XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h);
- #else
- XSetForeground (disp, gc, term->pix_colors[color]);
- XFillRectangle (disp, d, gc, x, y, w, h);
- #endif
- }
- }
- /////////////////////////////////////////////////////////////////////////////
- struct rxvt_font_default : rxvt_font {
- struct rxvt_fontset *fs;
- rxvt_font_default (rxvt_fontset *fs)
- : rxvt_font ()
- {
- this->fs = fs;
- }
- rxvt_fontprop properties ()
- {
- rxvt_fontprop p;
- p.width = p.height = 1;
- p.ascent = rxvt_fontprop::unset;
- p.weight = rxvt_fontprop::medium;
- p.slant = rxvt_fontprop::roman;
- return p;
- }
- bool load (const rxvt_fontprop &prop, bool force_prop)
- {
- width = 1; height = 1;
- ascent = 1; descent = 0;
- set_name (strdup ("built-in support font"));
- return true;
- }
- bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
- {
- careful = false;
- if (unicode <= 0x001f)
- return true;
- if (unicode <= 0x007f)
- return false;
- if (unicode <= 0x009f)
- return true;
- #ifdef BUILTIN_GLYPHS
- if (unicode >= 0x2500 && unicode <= 0x259f &&
- !term->option (Opt_skipBuiltinGlyphs))
- return true;
- #endif
- if (IS_COMPOSE (unicode))
- return true;
- switch (unicode)
- {
- case ZERO_WIDTH_CHAR:
- case NOCHAR:
- return true;
- }
- return false;
- }
- void draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg);
- };
- void
- rxvt_font_default::draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg)
- {
- dTermDisplay;
- dTermGC;
- clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
- XSetForeground (disp, gc, term->pix_colors[fg]);
- while (len)
- {
- #if ENABLE_COMBINING
- compose_char *cc;
- #endif
- const text_t *tp = text;
- text_t t = *tp;
- while (++text, --len && *text == NOCHAR)
- ;
- int width = text - tp;
- int fwidth = term->fwidth * width;
- #ifdef BUILTIN_GLYPHS
- if (0x2500 <= t && t <= 0x259f)
- {
- # include "table/linedraw.h"
- uint16_t offs = linedraw_offs[t - 0x2500];
- uint32_t *a = linedraw_command + (offs >> 4);
- uint32_t *b = a + (offs & 15);
- int W = fwidth;
- int H = term->fheight;
- int x_[16];
- int y_[16];
- for (int i = 0; i <= 8; i++)
- {
- x_[i] = x + ((W-1) * i + (i*7/8)) / 8;
- y_[i] = y + ((H-1) * i + (i*7/8)) / 8;
- }
- x_[10] = x + (W - 1) / 2; x_[9] = x_[10] - 1; x_[11] = x_[10] + 1;
- y_[10] = y + (H - 1) / 2; y_[9] = y_[10] - 1; y_[11] = y_[10] + 1;
- XGCValues gcv;
- gcv.cap_style = CapButt;
- gcv.line_width = 0;
- XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv);
- while (a < b)
- {
- uint32_t command = *a++;
- int op = (command >> 24) & 255;
- int a = (command >> 20) & 15;
- int b = (command >> 16) & 15;
- int x1 = x_[(command >> 12) & 15];
- int y1 = y_[(command >> 8) & 15];
- int x2 = x_[(command >> 4) & 15];
- int y2 = y_[(command >> 0) & 15];
- switch (op)
- {
- case 0: // line
- XDrawLine (disp, d, gc, x1, y1, x2, y2);
- break;
- case 1: // rectangle, possibly stippled
- if (a)
- {
- static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 };
- gcv.fill_style = FillStippled;
- gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2);
- gcv.ts_x_origin = x;
- gcv.ts_y_origin = y;
- XChangeGC (disp, gc,
- GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
- &gcv);
- }
- XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1);
- if (a)
- {
- XFreePixmap (disp, gcv.stipple);
- gcv.stipple = 0;
- gcv.fill_style = FillSolid;
- XChangeGC (disp, gc, GCFillStyle, &gcv);
- }
- break;
- case 2: // arc
- XDrawArc (disp, d, gc,
- x1 - W/2, y1 - H/2, W-1, H-1,
- (a - 1) * 90*64, (b - 1) * 90*64);
- break;
- }
- }
- }
- #else
- if (0)
- ;
- #endif
- #if ENABLE_COMBINING
- else if (IS_COMPOSE (t) && (cc = rxvt_composite[t]))
- {
- min_it (width, 2); // we only support wcwidth up to 2
- text_t chrs[2];
- chrs [1] = NOCHAR;
- *chrs = cc->c1;
- rxvt_font *f1 = (*fs)[fs->find_font_idx (cc->c1)];
- f1->draw (d, x, y, chrs, width, fg, bg);
- if (cc->c2 != NOCHAR)
- {
- bool careful;
- // prefer font of first character, for no good reasons
- *chrs = cc->c2;
- rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful)
- ? f1
- : (*fs)[fs->find_font_idx (cc->c2)];
- f2->draw (d, x, y, chrs, width, fg, Color_none);
- }
- }
- #endif
- else
- switch (t)
- {
- case '\t':
- case ZERO_WIDTH_CHAR:
- case NOCHAR:
- break;
- default:
- XDrawRectangle (disp, d, gc, x + 2, y + 2,
- fwidth - 4, term->fheight - 4);
- }
- x += fwidth;
- }
- }
- struct rxvt_font_overflow : rxvt_font {
- struct rxvt_fontset *fs;
- rxvt_font_overflow (rxvt_fontset *fs)
- : rxvt_font ()
- {
- this->fs = fs;
- }
- rxvt_fontprop properties ()
- {
- rxvt_fontprop p;
- p.width = p.height = 1;
- p.ascent = rxvt_fontprop::unset;
- p.weight = rxvt_fontprop::medium;
- p.slant = rxvt_fontprop::roman;
- return p;
- }
- bool load (const rxvt_fontprop &prop, bool force_prop)
- {
- width = 1; height = 1;
- ascent = 1; descent = 0;
- set_name (strdup ("built-in rendition overflow font"));
- return true;
- }
- bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
- {
- return false;
- }
- void draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg)
- {
- while (len)
- {
- int fid = fs->find_font_idx (*text);
- int w = 1;
- while (w < len && text[w] == NOCHAR)
- w++;
- (*fs)[fid]->draw (d, x, y, text, w, fg, bg);
- text += w;
- len -= w;
- x += term->fwidth * w;
- }
- }
- };
- /////////////////////////////////////////////////////////////////////////////
- struct rxvt_font_x11 : rxvt_font {
- rxvt_font_x11 () { f = 0; }
- void clear ();
- rxvt_fontprop properties ();
- bool load (const rxvt_fontprop &prop, bool force_prop);
- bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
- void draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg);
- bool slow; // whether this is a proportional font or has other funny characteristics
- XFontStruct *f;
- bool enc2b, encm;
- char *get_property (XFontStruct *f, Atom property, const char *repl) const;
- bool set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth);
- bool set_properties (rxvt_fontprop &p, XFontStruct *f);
- bool set_properties (rxvt_fontprop &p, const char *name);
- };
- char *
- rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const
- {
- unsigned long value;
- if (XGetFontProperty (f, property, &value))
- return XGetAtomName (term->dpy, value);
- else
- return repl ? strdup (repl) : 0;
- }
- rxvt_fontprop
- rxvt_font_x11::properties ()
- {
- rxvt_fontprop p;
- set_properties (p, f);
- return p;
- }
- bool
- rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth)
- {
- p.width = width != rxvt_fontprop::unset ? width
- : avgwidth ? (avgwidth + 1) / 10
- : (height + 1) / 2;
- p.height = height;
- p.ascent = rxvt_fontprop::unset;
- p.weight = *weight == 'B' || *weight == 'b' ? rxvt_fontprop::bold : rxvt_fontprop::medium;
- p.slant = *slant == 'r' || *slant == 'R' ? rxvt_fontprop::roman : rxvt_fontprop::italic;
- return true;
- }
- bool
- rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f)
- {
- unsigned long height;
- #if 0
- if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height))
- return false;
- #else
- height = f->ascent + f->descent;
- #endif
- unsigned long avgwidth;
- if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth))
- avgwidth = 0;
- char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium");
- char *slant = get_property (f, term->xa [XA_SLANT], "r");
- set_properties (p, height, weight, slant, avgwidth);
- free (weight);
- free (slant);
- p.ascent = f->ascent;
- return true;
- }
- bool
- rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name)
- {
- dTermDisplay;
- int slashes = 0;
- const char *comp[13];
- for (const char *c = name; *c; c++)
- if (*c == '-')
- {
- comp[slashes++] = c + 1;
- if (slashes >= 13)
- break;
- }
- /* can we short-circuit the costly XLoadQueryFont? */
- if (slashes >= 13
- && (*comp[ 6] >= '1' && *comp[ 6] <= '9')
- && (*comp[11] >= '0' && *comp[11] <= '9'))
- return set_properties (p, atoi (comp[6]), comp[2], comp[3], atoi (comp[11]));
- XFontStruct *f = XLoadQueryFont (disp, name);
- if (f)
- {
- // the font should really exist now. if not, we have a problem
- // (e.g. if the user did xset fp rehash just when we were searching fonts).
- // in that case, just return garbage.
- bool ret = set_properties (p, f);
- XFreeFont (disp, f);
- return ret;
- }
- else
- return false;
- }
- // fix the size of scalable fonts
- static bool
- replace_field (char **ptr, const char *name, int index, const char old, const char *replace)
- {
- int slashes = 0;
- const char *field, *end;
- for (const char *c = name; *c; c++)
- if (*c == '-')
- {
- if (slashes == index)
- field = c + 1;
- if (slashes == index + 1)
- end = c;
- if (++slashes >= 13)
- break;
- }
- if (slashes >= 13 && (!old || *field == old))
- {
- size_t len = field - name;
- *ptr = (char *)malloc (len + strlen (replace) + strlen (end) + 1);
- memcpy (*ptr, name, len);
- strcpy (*ptr + len, replace);
- strcat (*ptr, end);
- return true;
- }
- else
- {
- *ptr = strdup (name);
- return false;
- }
- }
- bool
- rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop)
- {
- dTermDisplay;
- clear ();
- char field_str[64]; // enough for 128 bits
- // first morph the font if required
- if (force_prop)
- {
- char *fname;
- if (name[0] != '-')
- {
- f = XLoadQueryFont (disp, name);
- if (!f)
- return false;
- char *new_name = get_property (f, XA_FONT, 0);
- if (new_name)
- set_name (new_name);
- else
- rxvt_warn ("font '%s' has no FONT property, continuing without.\n", name);
- XFreeFont (disp, f);
- f = 0;
- }
- if (prop.weight != rxvt_fontprop::unset)
- {
- replace_field (&fname, name, 2, 0,
- prop.weight < rxvt_fontprop::bold
- ? "medium" : "bold");
- set_name (fname);
- }
- if (prop.slant != rxvt_fontprop::unset)
- {
- replace_field (&fname, name, 3, 0,
- prop.slant < rxvt_fontprop::italic
- ? "r" : "i"); // TODO: handle "o"blique, too
- set_name (fname);
- }
- }
- sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset
- ? 0 : prop.height);
- struct font_weight {
- char *name;
- int diff;
- void clear ()
- {
- name = 0;
- diff = 0x7fffffff;
- }
- font_weight () { clear (); }
- ~font_weight () { free (name); }
- };
- char **list;
- int count;
- list = XListFonts (disp, name, 4000, &count);
- set_name (0);
- if (!list)
- return false;
- font_weight *fonts = new font_weight[count];
- for (int i = 0; i < count; i++)
- {
- rxvt_fontprop p;
- char *fname;
- int diff = 0;
- if (replace_field (&fname, list[i], 6, '0', field_str))
- diff += 10; // slightly penalize scalable fonts
- else
- {
- free (fname);
- if (replace_field (&fname, list[i], 11, '0', "0"))
- diff += 300; // more heavily penalize what looks like scaled bitmap fonts
- }
- if (!set_properties (p, fname)
- // also weed out too large fonts
- || (prop.height != rxvt_fontprop::unset
- && p.height > prop.height))
- {
- free (fname);
- continue;
- }
- if (prop.height != rxvt_fontprop::unset) diff += (prop.height - p.height) * 128;
- if (prop.weight != rxvt_fontprop::unset) diff += abs (prop.weight - p.weight);
- if (prop.slant != rxvt_fontprop::unset) diff += abs (prop.slant - p.slant);
- //if (prop.width != rxvt_fontprop::unset) diff += abs (prop.width - p.width);
- fonts[i].name = fname;
- fonts[i].diff = diff;
- }
- XFreeFontNames (list);
- // this loop only iterates when the guessed font-size is too small
- for (;;)
- {
- font_weight *best = fonts;
- for (font_weight *w = fonts + 1; w < fonts + count; w++)
- if (w->diff < best->diff)
- best = w;
- if (!best->name
- || !(f = XLoadQueryFont (disp, best->name)))
- break;
- set_name (best->name);
- best->clear ();
- ascent = f->ascent;
- descent = f->descent;
- height = ascent + descent;
- if (prop.height == rxvt_fontprop::unset
- || height <= prop.height)
- break; // font is ready for use
- // PIXEL_SIZE small enough, but real height too large
- clear ();
- }
- delete [] fonts;
- if (!f)
- return false;
- char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0);
- char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0);
- cs = CS_UNKNOWN;
- if (registry && encoding)
- {
- char charset[64];
- snprintf (charset, 64, "%s-%s", registry, encoding);
- cs = codeset_from_name (charset);
- if (cs == CS_UNKNOWN)
- rxvt_warn ("%s: cannot deduce encoding from registry/encoding properties \"%s\", ignoring font.\n", name, charset);
- }
- free (registry);
- free (encoding);
- if (cs == CS_UNKNOWN)
- {
- char *value = get_property (f, XA_FONT, 0);
- const char *charset = value;
- if (!charset)
- charset = name;
- int count = 13;
- while (*charset)
- if (*charset++ == '-' && !--count)
- break;
- cs = codeset_from_name (charset);
- if (cs == CS_UNKNOWN)
- rxvt_warn ("%s: cannot deduce encoding from font name property \"%s\", ignoring font.\n", name, charset);
- free (value);
- }
- if (cs == CS_UNKNOWN)
- {
- clear ();
- return false;
- }
- if (cs == CS_UNICODE)
- cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font
- encm = f->min_byte1 != 0 || f->max_byte1 != 0;
- enc2b = encm || f->max_char_or_byte2 > 255;
- slow = false;
- #if 1 // only used for slow detection, TODO optimize
- if (f->min_bounds.width == f->max_bounds.width || !f->per_char)
- width = f->max_bounds.width;
- else
- {
- slow = true;
- int N = f->max_char_or_byte2 - f->min_char_or_byte2;
- if (encm)
- N += (f->max_byte1 - f->min_byte1)
- * (f->max_char_or_byte2 - f->min_char_or_byte2 + 1);
- while (N)
- {
- if (f->per_char[N].width > width)
- width = f->per_char[N].width;
- --N;
- }
- }
- #endif
- width = 1;
- for (uint16_t *t = extent_test_chars; t < extent_test_chars + ecb_array_length (extent_test_chars); t++)
- {
- if (FROM_UNICODE (cs, *t) == NOCHAR)
- continue;
- // ignore characters we wouldn't use anyways
- bool careful;
- if (!has_char (*t, &prop, careful))
- continue;
- XChar2b ch = { *t >> 8, *t };
- XCharStruct g;
- int dir_ret, asc_ret, des_ret;
- XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g);
- int wcw = WCWIDTH (*t);
- if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
- if (width < g.width) width = g.width;
- }
- #if 0 // do it per-character
- if (prop && width > prop->width)
- {
- clear ();
- return false;
- }
- #endif
- return true;
- }
- void
- rxvt_font_x11::clear ()
- {
- if (f)
- {
- XFreeFont (term->dpy, f);
- f = 0;
- }
- }
- bool
- rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
- {
- careful = false;
- uint32_t ch = FROM_UNICODE (cs, unicode);
- if (ch == NOCHAR)
- return false;
- /* check whether the character exists in _this_ font. horrible. */
- XCharStruct *xcs;
- if (encm)
- {
- unsigned char byte1 = ch >> 8;
- unsigned char byte2 = ch & 255;
- if (byte1 < f->min_byte1 || byte1 > f->max_byte1
- || byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2)
- return false;
- if (f->per_char)
- {
- int D = f->max_char_or_byte2 - f->min_char_or_byte2 + 1;
- int N = (byte1 - f->min_byte1) * D + byte2 - f->min_char_or_byte2;
- xcs = f->per_char + N;
- }
- else
- xcs = &f->max_bounds;
- }
- else
- {
- if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2)
- return false;
- if (f->per_char)
- xcs = f->per_char + (ch - f->min_char_or_byte2);
- else
- xcs = &f->max_bounds;
- }
- if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0
- && xcs->ascent == 0 && xcs->descent == 0)
- return false;
- if (!prop || prop->width == rxvt_fontprop::unset)
- return true;
- // check whether character overlaps previous/next character
- int w = xcs->rbearing - xcs->lbearing;
- int wcw = max (WCWIDTH (unicode), 1);
- careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw;
- if (careful && !OVERLAP_OK (w, wcw, prop))
- return false;
- return true;
- }
- void
- rxvt_font_x11::draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg)
- {
- // this looks like a mess /.
- // and it is a mess /.
- // yet we are trying to be perfect /.
- // but the result still isn't perfect /.
- dTermDisplay;
- dTermGC;
- bool slow = this->slow
- || width != term->fwidth
- || height != term->fheight;
- int base = ascent; // sorry, incorrect: term->fbase;
- XGCValues v;
- v.foreground = term->pix_colors[fg];
- v.font = f->fid;
- if (enc2b)
- {
- const XChar2b *xc = enc_xchar2b (text, len, cs, slow);
- if (bg == Color_bg && !slow)
- {
- v.background = term->pix_colors[bg];
- XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v);
- XDrawImageString16 (disp, d, gc, x, y + base, xc, len);
- }
- else
- {
- clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
- XChangeGC (disp, gc, GCForeground | GCFont, &v);
- if (slow)
- {
- do
- {
- if (xc->byte1 || xc->byte2)
- XDrawString16 (disp, d, gc, x, y + base, xc, 1);
- x += term->fwidth;
- xc++; len--;
- }
- while (len);
- }
- else
- XDrawString16 (disp, d, gc, x, y + base, xc, len);
- }
- }
- else
- {
- const char *xc = enc_char (text, len, cs, slow);
- if (bg == Color_bg && !slow)
- {
- v.background = term->pix_colors[bg];
- XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v);
- XDrawImageString (disp, d, gc, x, y + base, xc, len);
- }
- else
- {
- clear_rect (d, x, y, term->fwidth * len, term->fheight, bg);
- XChangeGC (disp, gc, GCForeground | GCFont, &v);
- if (slow)
- {
- do
- {
- if (*xc)
- XDrawString (disp, d, gc, x, y + base, xc, 1);
- x += term->fwidth;
- xc++; len--;
- }
- while (len);
- }
- else
- XDrawString (disp, d, gc, x, y + base, xc, len);
- }
- }
- }
- /////////////////////////////////////////////////////////////////////////////
- #if XFT
- struct rxvt_font_xft : rxvt_font {
- rxvt_font_xft () { f = 0; }
- void clear ();
- rxvt_fontprop properties ();
- bool load (const rxvt_fontprop &prop, bool force_prop);
- void draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg);
- bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const;
- protected:
- XftFont *f;
- };
- void
- rxvt_font_xft::clear ()
- {
- if (f)
- {
- XftFontClose (term->dpy, f);
- f = 0;
- }
- }
- rxvt_fontprop
- rxvt_font_xft::properties ()
- {
- rxvt_fontprop p;
- FT_Face face = XftLockFace (f);
- p.width = width;
- p.height = height;
- p.ascent = ascent;
- p.weight = face->style_flags & FT_STYLE_FLAG_BOLD
- ? rxvt_fontprop::bold : rxvt_fontprop::medium;
- p.slant = face->style_flags & FT_STYLE_FLAG_ITALIC
- ? rxvt_fontprop::italic : rxvt_fontprop::roman;
- XftUnlockFace (f);
- return p;
- }
- bool
- rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop)
- {
- dTermDisplay;
- clear ();
- FcPattern *p = FcNameParse ((FcChar8 *) name);
- if (!p)
- return false;
- FcValue v;
- if (prop.height != rxvt_fontprop::unset
- && (FcPatternGet (p, FC_PIXEL_SIZE, 0, &v) != FcResultMatch
- && FcPatternGet (p, FC_SIZE, 0, &v) != FcResultMatch))
- FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height);
- if (prop.weight != rxvt_fontprop::unset
- && (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch))
- FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
- if (prop.slant != rxvt_fontprop::unset
- && (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch))
- FcPatternAddInteger (p, FC_SLANT, prop.slant);
- #if 0 // clipping unfortunately destroys our precious double-width-characters
- // clip width, we can't do better, or can we?
- if (FcPatternGet (p, FC_CHAR_WIDTH, 0, &v) != FcResultMatch)
- FcPatternAddInteger (p, FC_CHAR_WIDTH, prop.width);
- #endif
- if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch)
- FcPatternAddBool (p, FC_MINSPACE, 1);
- // store generated name so iso14755 view gives better results
- set_name ((char *)FcNameUnparse (p));
- XftResult result;
- FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result);
- FcPatternDestroy (p);
- if (!match)
- return false;
- int ftheight = 0;
- bool success = true;
- for (;;)
- {
- p = FcPatternDuplicate (match);
- f = XftFontOpenPattern (disp, p);
- if (!f)
- {
- FcPatternDestroy (p);
- success = false;
- break;
- }
- FT_Face face = XftLockFace (f);
- ascent = (face->size->metrics.ascender + 63) >> 6;
- descent = (-face->size->metrics.descender + 63) >> 6;
- height = max (ascent + descent, (face->size->metrics.height + 63) >> 6);
- width = 0;
- bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE;
- XftUnlockFace (f);
- int glheight = height;
- for (uint16_t *t = extent_test_chars; t < extent_test_chars + ecb_array_length (extent_test_chars); t++)
- {
- FcChar16 ch = *t;
- if (cs != CS_UNICODE
- && ch > 0x100
- && FROM_UNICODE (cs, ch) == NOCHAR)
- continue;
- // ignore characters we wouldn't use anyways
- bool careful;
- if (!has_char (*t, &prop, careful))
- continue;
- XGlyphInfo g;
- XftTextExtents16 (disp, f, &ch, 1, &g);
- g.width -= g.x;
- int wcw = WCWIDTH (ch);
- if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
- if (width < g.width ) width = g.width;
- if (height < g.height ) height = g.height;
- if (glheight < g.height - g.y) glheight = g.height - g.y;
- }
- if (!width)
- {
- rxvt_warn ("unable to calculate font width for '%s', ignoring.\n", name);
- XftFontClose (disp, f);
- f = 0;
- success = false;
- break;
- }
- if (prop.height == rxvt_fontprop::unset
- || (height <= prop.height && glheight <= prop.height)
- || height <= 2
- || !scalable)
- break;
- if (ftheight)
- {
- // take smaller steps near the end
- if (height > prop.height + 1) ftheight++;
- if (height > prop.height + 2) ftheight++;
- if (height > prop.height + 3) ftheight++;
- ftheight -= height - prop.height;
- }
- else
- ftheight = prop.height - 1;
- XftFontClose (disp, f);
- FcPatternDel (match, FC_PIXEL_SIZE);
- FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight);
- }
- FcPatternDestroy (match);
- #if 0 // do it per-character
- if (prop.width != rxvt_fontprop::unset && width > prop.width)
- {
- clear ();
- success = false;
- }
- #endif
- return success;
- }
- bool
- rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const
- {
- careful = false;
- if (!XftCharExists (term->dpy, f, unicode))
- return false;
- if (!prop || prop->width == rxvt_fontprop::unset)
- return true;
- // check character against base font bounding box
- FcChar32 ch = unicode;
- XGlyphInfo g;
- XftTextExtents32 (term->dpy, f, &ch, 1, &g);
- int w = g.width - g.x;
- int wcw = max (WCWIDTH (unicode), 1);
- careful = g.x > 0 || w > prop->width * wcw;
- if (careful && !OVERLAP_OK (w, wcw, prop))
- return false;
- // this weeds out _totally_ broken fonts, or glyphs
- if (!OVERLAP_OK (g.xOff, wcw, prop))
- return false;
- return true;
- }
- void
- rxvt_font_xft::draw (rxvt_drawable &d, int x, int y,
- const text_t *text, int len,
- int fg, int bg)
- {
- XGlyphInfo extents;
- XftGlyphSpec *enc = rxvt_temp_buf<XftGlyphSpec> (len);
- XftGlyphSpec *ep = enc;
- dTermDisplay;
- dTermGC;
- int w = term->fwidth * len;
- int h = term->fheight;
- bool buffered = bg >= Color_transparent
- && term->option (Opt_buffered);
- // cut trailing spaces
- while (len && text [len - 1] == ' ')
- len--;
- int x_ = buffered ? 0 : x;
- int y_ = buffered ? 0 : y;
- while (len)
- {
- int cwidth = term->fwidth;
- FcChar32 fc = *text++; len--;
- while (len && *text == NOCHAR)
- text++, len--, cwidth += term->fwidth;
- if (fc != ' ') // skip spaces
- {
- FT_UInt glyph = XftCharIndex (disp, f, fc);
- XftGlyphExtents (disp, f, &glyph, 1, &extents);
- ep->glyph = glyph;
- ep->x = x_ + (cwidth - extents.xOff >> 1);
- ep->y = y_ + ascent;
- if (extents.xOff == 0)
- ep->x = x_ + cwidth;
- ep++;
- }
- x_ += cwidth;
- }
- if (buffered)
- {
- if (ep != enc)
- {
- rxvt_drawable &d2 = d.screen->scratch_drawable (w, h);
- #ifdef HAVE_BG_PIXMAP
- Picture dst = 0; // the only assignment is done conditionally in the following if condition
- if (term->bg_pixmap
- && (bg == Color_transparent || bg == Color_bg
- || (bg >= 0 && !term->pix_colors[bg].is_opaque () && ((dst = XftDrawPicture (d2))))))
- {
- int src_x = x, src_y = y;
- if (term->bg_flags & rxvt_term::BG_IS_TRANSPARENT)
- {
- src_x += term->window_vt_x;
- src_y += term->window_vt_y;
- }
- if (term->bg_pmap_width >= src_x + w
- && term->bg_pmap_height >= src_y + h)
- {
- XCopyArea (disp, term->bg_pixmap, d2, gc,
- src_x, src_y, w, h, 0, 0);
- }
- else
- {
- XGCValues gcv;
- gcv.fill_style = FillTiled;
- gcv.tile = term->bg_pixmap;
- gcv.ts_x_origin = -src_x;
- gcv.ts_y_origin = -src_y;
- XChangeGC (disp, gc,
- GCTile | GCTileStipXOrigin | GCTileStipYOrigin | GCFillStyle,
- &gcv);
- XFillRectangle (disp, d2, gc, 0, 0, w, h);
- gcv.fill_style = FillSolid;
- XChangeGC (disp, gc, GCFillStyle, &gcv);
- }
- if (dst)
- {
- Picture solid_color_pict = XftDrawSrcPicture (d2, &term->pix_colors[bg].c);
- // dst can only be set when bg >= 0
- XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, 0, 0, w, h);
- }
- }
- else
- #endif
- XftDrawRect (d2, &term->pix_colors[bg >= 0 ? bg : Color_bg].c, 0, 0, w, h);
- XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc);
- XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y);
- }
- else
- clear_rect (d, x, y, w, h, bg);
- }
- else
- {
- clear_rect (d, x, y, w, h, bg);
- XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc);
- }
- }
- #endif
- /////////////////////////////////////////////////////////////////////////////
- rxvt_fontset::rxvt_fontset (rxvt_term *term)
- : fontdesc (0), term (term)
- {
- clear ();
- }
- rxvt_fontset::~rxvt_fontset ()
- {
- clear ();
- }
- void
- rxvt_fontset::clear ()
- {
- prop.width = prop.height = prop.ascent = prop.weight = prop.slant
- = rxvt_fontprop::unset;
- force_prop = false;
- for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++)
- (*i)->unref ();
- for (pagemap **p = fmap.begin (); p != fmap.end (); p++)
- delete *p;
- free (fontdesc); fontdesc = 0;
- fonts.clear ();
- fallback = fallback_fonts;
- }
- void
- rxvt_fontset::prepare_font (rxvt_font *font, codeset cs)
- {
- font->set_term (term);
- font->cs = cs;
- font->loaded = false;
- }
- rxvt_font *
- rxvt_fontset::new_font (const char *name, codeset cs)
- {
- rxvt_font *f;
- if (!name || !*name)
- {
- name = "";
- f = new rxvt_font_default (this);
- }
- #if XFT
- else if (!strncmp (name, "xft:", 4))
- {
- name += 4;
- f = new rxvt_font_xft ();
- }
- #endif
- else if (!strncmp (name, "x:", 2))
- {
- name += 2;
- f = new rxvt_font_x11;
- }
- else
- f = new rxvt_font_x11;
- f->set_name (strdup (name));
- prepare_font (f, cs);
- return f;
- }
- /////////////////////////////////////////////////////////////////////////////
- void
- rxvt_fontset::push_font (rxvt_font *font)
- {
- // the fontCount index is reserved for the overflow font, it is only
- // necessary when we get fontCount or more fonts, as they cannot be
- // represented in the rendition.
- if (fonts.size () == fontCount)
- {
- rxvt_font *f = new rxvt_font_overflow (this);
- prepare_font (f, CS_UNICODE);
- fonts.push_back (f);
- }
- fonts.push_back (font);
- }
- void
- rxvt_fontset::add_fonts (const char *desc)
- {
- if (desc)
- {
- char buf[512];
- const char *end;
- do
- {
- while (*desc && *desc <= ' ')
- desc++;
- codeset cs = CS_UNICODE;
- if (*desc == '[')
- {
- char spec[256];
- const char *extra = ++desc; // not yet used
- desc = strchr (desc, ']');
- if (!desc)
- {
- rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n");
- break;
- }
- memcpy (spec, extra, min (desc - extra, 255));
- spec[min (desc - extra, 255)] = 0;
- if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1))
- cs = codeset_from_name (spec + sizeof ("codeset=") - 1);
- else
- rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec);
- desc++;
- while (*desc <= ' ') desc++;
- }
- end = strchr (desc, ',');
- if (!end)
- end = desc + strlen (desc);
- if (end - desc < 511)
- {
- memcpy (buf, desc, end - desc);
- buf[end - desc] = 0;
- push_font (new_font (buf, cs));
- }
- else
- rxvt_warn ("fontset element too long (>511 bytes), ignored.\n");
- desc = end + 1;
- }
- while (*end);
- }
- }
- bool
- rxvt_fontset::realize_font (int i)
- {
- if (i < 0 || i >= fonts.size ())
- return false;
- if (fonts[i]->loaded)
- return true;
- fonts[i]->loaded = true;
- if (!fonts[i]->load (prop, force_prop))
- {
- fonts[i]->cs = CS_UNKNOWN;
- return false;
- }
- return true;
- }
- bool
- rxvt_fontset::populate (const char *desc)
- {
- clear ();
- fontdesc = strdup (desc);
- push_font (new_font (0, CS_UNICODE));
- realize_font (0);
- add_fonts (desc);
- return true;
- }
- int
- rxvt_fontset::find_font (const char *name) const
- {
- for (rxvt_font *const *f = fonts.begin (); f < fonts.end (); f++)
- if ((*f)->name && !strcmp ((*f)->name, name))
- return f - fonts.begin ();
- return -1;
- }
- int
- rxvt_fontset::find_font_idx (unicode_t unicode)
- {
- if (unicode >= 1<<20)
- return 0;
- unicode_t hi = unicode >> 8;
- if (hi < fmap.size ()
- && fmap[hi]
- && (*fmap[hi])[unicode & 0xff] != 0xff)
- return (*fmap[hi])[unicode & 0xff];
- unsigned int i;
- for (i = 0; i < fonts.size (); i++)
- {
- rxvt_font *f = fonts[i];
- if (!f->loaded)
- {
- if (FROM_UNICODE (f->cs, unicode) == NOCHAR)
- goto next_font;
- if (!realize_font (i))
- goto next_font;
- if (prop.ascent != rxvt_fontprop::unset)
- max_it (f->ascent, prop.ascent);
- }
- if (f->cs == CS_UNKNOWN)
- goto next_font;
- bool careful;
- if (f->has_char (unicode, &prop, careful))
- {
- i = (i << 1) | careful;
- goto found;
- }
- next_font:
- if (i == fonts.size () - 1)
- {
- if (fallback->name)
- {
- // search through the fallback list
- push_font (new_font (fallback->name, fallback->cs));
- fallback++;
- }
- else
- {
- // try to find a new font.
- // only xft currently supported, as there is no
- // way to configure this and xft is easier to hack in,
- // while x11 has more framework in place already.
- // TODO: this is a real resource hog, xft takes ages(?)
- #if XFT && USE_SLOW_LOOKUP
- // grab the first xft font that seems suitable
- FcPattern *p = FcPatternCreate ();
- FcCharSet *s = FcCharSetCreate ();
- FcCharSetAddChar (s, unicode);
- FcPatternAddCharSet (p, FC_CHARSET, s);
- // charsets don't help that much, as xft might return
- // a non-matching font even if a better font is available :/
- x x x x TODO prop might have unset contents
- FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height);
- FcPatternAddInteger (p, FC_WEIGHT, prop.weight);
- FcPatternAddInteger (p, FC_SLANT, prop.slant);
- FcPatternAddBool (p, FC_MINSPACE, 1);
- //FcPatternAddBool (p, FC_ANTIALIAS, 1);
- XftResult result;
- FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result);
- FcPatternDestroy (p);
- if (match)
- {
- FcPatternDel (match, FC_CHARSET);
- char *font = (char *)FcNameUnparse (match);
- FcPatternDestroy (match);
- if (find_font (font) < 0)
- {
- char fontname[4096];
- snprintf (fontname, sizeof (fontname), "xft:%s", font);
- push_font (new_font (fontname, CS_UNICODE));
- }
- free (font);
- }
- #endif
- }
- }
- }
- /* we must return SOME font */
- i = 0;
- found:
- // found a font, cache it
- if (i < 255)
- {
- while (hi >= fmap.size ())
- fmap.push_back (0);
- if (!fmap[hi])
- {
- fmap[hi] = (pagemap *)new pagemap;
- memset (fmap[hi], 0xff, sizeof (pagemap));
- }
- (*fmap[hi])[unicode & 0xff] = i;
- }
- return i;
- }