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/*----------------------------------------------------------------------* |
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* File: rxvtfont.C |
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*----------------------------------------------------------------------* |
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* Copyright (c) 2003-2008 Marc Lehmann <schmorp@schmorp.de> |
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* - original version. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*---------------------------------------------------------------------*/ |
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|
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#include "../config.h" |
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#include "rxvt.h" |
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#include "rxvtutil.h" |
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#include "rxvtfont.h" |
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|
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#include <stdlib.h> |
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|
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#include <inttypes.h> |
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|
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#if XFT |
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# include <fontconfig/fontconfig.h> |
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#endif |
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|
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#define MAX_OVERLAP_ROMAN (8 + 2) // max. character width in 8ths of the base width |
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#define MAX_OVERLAP_ITALIC (8 + 3) // max. overlap for italic fonts |
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|
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#define OVERLAP_OK(w,wcw,prop) ((w) <= ( \ |
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(prop)->slant >= rxvt_fontprop::italic \ |
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? ((prop)->width * (wcw) * MAX_OVERLAP_ITALIC + 7) >> 3 \ |
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: ((prop)->width * (wcw) * MAX_OVERLAP_ROMAN + 7) >> 3 \ |
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)) |
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|
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static const struct rxvt_fallback_font { |
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codeset cs; |
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const char *name; |
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} fallback_fonts[] = { |
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{ CS_ISO8859_1, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-1" }, |
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{ CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-15" }, |
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{ CS_ISO8859_15, "-*-*-*-r-*--*-*-*-*-c-*-fcd8859-15" }, |
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|
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#if ENCODING_EU |
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// cyrillic |
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{ CS_KOI8_R, "-*-*-*-r-*--*-*-*-*-c-*-koi8-r" }, |
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{ CS_KOI8_U, "-*-*-*-r-*--*-*-*-*-c-*-koi8-u" }, |
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|
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{ CS_ISO8859_2, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-2" }, |
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{ CS_ISO8859_3, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-3" }, |
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{ CS_ISO8859_4, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-4" }, |
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{ CS_ISO8859_5, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-5" }, |
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{ CS_ISO8859_6, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-6" }, |
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{ CS_ISO8859_7, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-7" }, |
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{ CS_ISO8859_8, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-8" }, |
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{ CS_ISO8859_9, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-9" }, |
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{ CS_ISO8859_10, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-10" }, |
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{ CS_ISO8859_11, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-11" }, |
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{ CS_ISO8859_13, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-13" }, |
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{ CS_ISO8859_14, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-14" }, |
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{ CS_ISO8859_16, "-*-*-*-r-*--*-*-*-*-c-*-iso8859-16" }, |
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|
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# if XFT |
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{ CS_KOI8_U, "xft::lang=ru" }, |
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|
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{ CS_ISO8859_5, "xft::lang=ru" }, |
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{ CS_ISO8859_6, "xft::lang=ar" }, |
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{ CS_ISO8859_7, "xft::lang=el" }, |
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{ CS_ISO8859_8, "xft::lang=he" }, |
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{ CS_ISO8859_9, "xft::lang=tr" }, |
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{ CS_ISO8859_10, "xft::lang=se" }, |
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{ CS_ISO8859_11, "xft::lang=th" }, |
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# endif |
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#endif |
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|
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// japanese |
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#if ENCODING_JP || ENCODING_JP_EXT |
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# if XFT |
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// prefer xft for complex scripts |
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{ CS_JIS0208_1990_0, "xft:Sazanami Mincho:antialias=false" }, |
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{ CS_JIS0208_1990_0, "xft:Kochi Gothic:antialias=false" }, |
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{ CS_JIS0208_1990_0, "xft:Mincho:antialias=false" }, |
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{ CS_JIS0208_1990_0, "xft::lang=ja:antialias=false" }, |
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# endif |
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{ CS_JIS0201_1976_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0201*-0" }, |
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{ CS_JIS0208_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0208*-0" }, |
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{ CS_JIS0212_1990_0, "-*-mincho-*-r-*--*-*-*-*-c-*-jisx0212*-0" }, |
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{ CS_JIS0201_1976_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0201*-0" }, |
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{ CS_JIS0208_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0208*-0" }, |
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{ CS_JIS0212_1990_0, "-*-*-*-r-*--*-*-*-*-c-*-jisx0212*-0" }, |
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#endif |
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|
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#if ENCODING_ZH || ENCODING_ZH_EXT |
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# if XFT |
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{ CS_GBK_0, "xft:AR PL KaitiM GB" }, |
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{ CS_GBK_0, "xft:AR PL SungtiL GB" }, |
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{ CS_GBK_0, "xft::lang=zh" }, |
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{ CS_BIG5_EXT, "xft:AR PL Mingti2L Big5" }, |
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{ CS_BIG5_EXT, "xft:AR PL KaitiM Big5" }, |
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{ CS_GB2312_1980_0, "xft:AR PL KaitiM GB" }, |
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{ CS_GB2312_1980_0, "xft:AR PL SungtiL GB" }, |
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{ CS_GB2312_1980_0, "xft::lang=zh" }, |
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# endif |
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{ CS_GBK_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gbk*-0" }, |
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{ CS_BIG5, "-*-*-*-*-*-*-*-*-*-*-c-*-big5-0" }, |
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{ CS_BIG5_PLUS, "-*-*-*-*-*-*-*-*-*-*-c-*-big5p-0" }, |
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{ CS_BIG5_EXT, "-*-*-*-*-*-*-*-*-*-*-c-*-big5.eten-0" }, |
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{ CS_GB2312_1980_0, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" }, |
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{ CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-gb2312*-0" }, |
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{ CS_CNS11643_1992_1, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-1" }, |
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{ CS_CNS11643_1992_2, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-2" }, |
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{ CS_CNS11643_1992_3, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-3" }, |
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{ CS_CNS11643_1992_4, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-4" }, |
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{ CS_CNS11643_1992_5, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-5" }, |
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{ CS_CNS11643_1992_6, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-6" }, |
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{ CS_CNS11643_1992_7, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-7" }, |
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{ CS_CNS11643_1992_F, "-*-*-*-*-*-*-*-*-*-*-c-*-cns11643*-f" }, |
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#endif |
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|
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#if ENCODING_KR |
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{ CS_KSC5601_1987_0, "-baekmuk-gulim-*-*-*-*-*-*-*-*-c-*-ksc5601*" }, |
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{ CS_KSC5601_1987_0, "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*" }, |
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# if XFT |
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{ CS_KSC5601_1987_0, "xft:Baekmuk Gulim:antialias=false" }, |
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{ CS_KSC5601_1987_0, "xft::lang=ko:antialias=false" }, |
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# endif |
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#endif |
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|
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//{ CS_UNICODE, "-*-unifont-*-*-*-*-*-*-*-*-c-*-iso10646-1" }, // this gem of a font has actual dotted circles within the combining character glyphs. |
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#if XFT |
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{ CS_UNICODE, "xft:DejaVu Sans Mono:antialias=false:autohint=true" }, |
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{ CS_UNICODE, "xft:Courier New:antialias=false:autohint=true" }, |
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{ CS_UNICODE, "xft:Andale Mono:antialias=false:autohint=false" }, |
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{ CS_UNICODE, "xft:Arial Unicode MS:antialias=false:autohint=false" }, |
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|
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// FreeMono is usually uglier than x fonts, so try after the others |
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{ CS_UNICODE, "xft:FreeMono:autohint=true" }, |
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#endif |
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|
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// generic font fallback, put this last, as many iso10646 fonts have extents |
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// specified for all glyphs in the range they cover, but most are simply empty |
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//{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-c-*-iso10646-1" }, |
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//{ CS_UNICODE, "-*-*-*-r-*-*-*-*-*-*-m-*-iso10646-1" }, |
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{ CS_UNKNOWN, 0 } |
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}; |
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|
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// these characters are used to guess the font height and width |
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// pango uses a similar algorithm and doesn't trust the font either. |
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static uint32_t extent_test_chars[] = { |
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'0', '1', '8', 'a', 'd', 'x', 'm', 'y', 'g', 'W', 'X', '\'', '_', |
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0x00cd, 0x00d5, 0x0114, 0x0177, 0x0643, // ÍÕĔŷﻙ |
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0x304c, 0x672c, // が本 |
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0x1f600, // 😀 |
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}; |
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|
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#define dTermDisplay Display *disp = term->dpy |
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#define dTermGC GC gc = term->gc |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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static const char * |
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enc_char (const text_t *text, uint32_t len, codeset cs, bool &zero) |
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{ |
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uint8_t *buf = rxvt_temp_buf<uint8_t> (len); |
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uint8_t *res = buf; |
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|
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while (len--) |
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{ |
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uint32_t c = FROM_UNICODE (cs, *text++); |
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|
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if (c == NOCHAR) |
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{ |
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c = 0; |
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zero = true; |
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} |
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|
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*buf++ = c; |
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} |
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|
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return (const char *)res; |
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} |
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|
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static const XChar2b * |
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enc_xchar2b (const text_t *text, uint32_t len, codeset cs, bool &zero) |
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{ |
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XChar2b *buf = rxvt_temp_buf<XChar2b> (len); |
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XChar2b *res = buf; |
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|
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while (len--) |
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{ |
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uint32_t c = FROM_UNICODE (cs, *text++); |
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|
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if (c == NOCHAR) |
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{ |
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c = 0; |
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zero = true; |
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} |
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|
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buf->byte1 = c >> 8; |
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buf->byte2 = c; |
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buf++; |
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} |
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|
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return res; |
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} |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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rxvt_font::rxvt_font () |
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: name(0), width(rxvt_fontprop::unset), height(rxvt_fontprop::unset) |
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{ |
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} |
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|
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void |
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rxvt_font::set_name (char *name_) |
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{ |
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if (name == name_) |
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return; |
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|
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if (name) free (name); // let the compiler optimize |
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name = name_; |
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} |
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|
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void |
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rxvt_font::clear_rect (rxvt_drawable &d, int x, int y, int w, int h, int color) const |
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{ |
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dTermDisplay; |
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dTermGC; |
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|
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if (color == Color_bg || color == Color_transparent) |
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XClearArea (disp, d, x, y, w, h, false); |
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else if (color >= 0) |
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{ |
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#if XFT |
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Picture dst; |
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|
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# ifdef HAVE_IMG |
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if (term->bg_img |
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&& !term->pix_colors[color].is_opaque () |
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&& ((dst = XftDrawPicture (d)))) |
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{ |
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XClearArea (disp, d, x, y, w, h, false); |
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|
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Picture solid_color_pict = XftDrawSrcPicture (d, &term->pix_colors[color].c); |
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XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, x, y, w, h); |
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} |
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else |
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# endif |
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XftDrawRect (d, &term->pix_colors[color].c, x, y, w, h); |
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|
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#else |
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XSetForeground (disp, gc, term->pix_colors[color]); |
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XFillRectangle (disp, d, gc, x, y, w, h); |
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#endif |
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} |
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} |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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struct rxvt_font_default : rxvt_font |
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{ |
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struct rxvt_fontset *fs; |
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|
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rxvt_font_default (rxvt_fontset *fs) |
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: rxvt_font () |
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{ |
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this->fs = fs; |
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} |
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|
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rxvt_fontprop properties () |
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{ |
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rxvt_fontprop p; |
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|
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p.width = p.height = 1; |
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p.ascent = rxvt_fontprop::unset; |
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p.weight = rxvt_fontprop::medium; |
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p.slant = rxvt_fontprop::roman; |
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|
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return p; |
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} |
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|
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bool load (const rxvt_fontprop &prop, bool force_prop) |
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{ |
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width = 1; height = 1; |
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ascent = 1; descent = 0; |
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|
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set_name (strdup ("built-in support font")); |
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|
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return true; |
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} |
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|
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bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
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{ |
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careful = false; |
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|
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if (unicode <= 0x001f) |
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return true; |
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|
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if (unicode <= 0x007f) |
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return false; |
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|
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if (unicode <= 0x009f) |
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return true; |
| 312 |
|
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#ifdef BUILTIN_GLYPHS |
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if (unicode >= 0x2500 && unicode <= 0x259f && |
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!term->option (Opt_skipBuiltinGlyphs)) |
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return true; |
| 317 |
#endif |
| 318 |
|
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// we do not check for IS_COMPOSE here, as this would |
| 320 |
// rob other fonts from taking over. |
| 321 |
|
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switch (unicode) |
| 323 |
{ |
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case ZERO_WIDTH_CHAR: |
| 325 |
case NOCHAR: |
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return true; |
| 327 |
} |
| 328 |
|
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return false; |
| 330 |
} |
| 331 |
|
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void draw (rxvt_drawable &d, int x, int y, |
| 333 |
const text_t *text, int len, |
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int fg, int bg); |
| 335 |
}; |
| 336 |
|
| 337 |
void |
| 338 |
rxvt_font_default::draw (rxvt_drawable &d, int x, int y, |
| 339 |
const text_t *text, int len, |
| 340 |
int fg, int bg) |
| 341 |
{ |
| 342 |
dTermDisplay; |
| 343 |
dTermGC; |
| 344 |
|
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clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
| 346 |
|
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XSetForeground (disp, gc, term->pix_colors[fg]); |
| 348 |
|
| 349 |
while (len) |
| 350 |
{ |
| 351 |
const text_t *tp = text; |
| 352 |
text_t t = *tp; |
| 353 |
|
| 354 |
while (++text, --len && *text == NOCHAR) |
| 355 |
; |
| 356 |
|
| 357 |
#if ENABLE_COMBINING |
| 358 |
compose_char *cc; |
| 359 |
#endif |
| 360 |
int width = text - tp; |
| 361 |
int fwidth = term->fwidth * width; |
| 362 |
|
| 363 |
#ifdef BUILTIN_GLYPHS |
| 364 |
if (0x2500 <= t && t <= 0x259f) |
| 365 |
{ |
| 366 |
# include "table/linedraw.h" |
| 367 |
uint16_t offs = linedraw_offs[t - 0x2500]; |
| 368 |
uint32_t *a = linedraw_command + (offs >> 4); |
| 369 |
uint32_t *b = a + (offs & 15); |
| 370 |
|
| 371 |
int W = fwidth; |
| 372 |
int H = term->fheight; |
| 373 |
|
| 374 |
int x_[16]; |
| 375 |
int y_[16]; |
| 376 |
|
| 377 |
for (int i = 0; i <= 8; i++) |
| 378 |
{ |
| 379 |
x_[i] = x + ((W-1) * i + (i*7/8)) / 8; |
| 380 |
y_[i] = y + ((H-1) * i + (i*7/8)) / 8; |
| 381 |
} |
| 382 |
|
| 383 |
x_[10] = x + (W - 1) / 2; x_[9] = x_[10] - 1; x_[11] = x_[10] + 1; |
| 384 |
y_[10] = y + (H - 1) / 2; y_[9] = y_[10] - 1; y_[11] = y_[10] + 1; |
| 385 |
|
| 386 |
XGCValues gcv; |
| 387 |
|
| 388 |
gcv.cap_style = CapButt; |
| 389 |
gcv.line_width = 0; |
| 390 |
XChangeGC (disp, gc, GCLineWidth | GCCapStyle, &gcv); |
| 391 |
|
| 392 |
while (a < b) |
| 393 |
{ |
| 394 |
uint32_t command = *a++; |
| 395 |
|
| 396 |
int op = (command >> 24) & 255; |
| 397 |
int a = (command >> 20) & 15; |
| 398 |
int b = (command >> 16) & 15; |
| 399 |
int x1 = x_[(command >> 12) & 15]; |
| 400 |
int y1 = y_[(command >> 8) & 15]; |
| 401 |
int x2 = x_[(command >> 4) & 15]; |
| 402 |
int y2 = y_[(command >> 0) & 15]; |
| 403 |
|
| 404 |
switch (op) |
| 405 |
{ |
| 406 |
case 0: // line |
| 407 |
XDrawLine (disp, d, gc, x1, y1, x2, y2); |
| 408 |
break; |
| 409 |
|
| 410 |
case 1: // rectangle, possibly stippled |
| 411 |
if (a) |
| 412 |
{ |
| 413 |
static char bm[] = { 0,0 , 3,1 , 1,2 , 1,0 }; |
| 414 |
|
| 415 |
gcv.fill_style = FillStippled; |
| 416 |
gcv.stipple = XCreateBitmapFromData (disp, d, bm + a * 2, 2, 2); |
| 417 |
gcv.ts_x_origin = x; |
| 418 |
gcv.ts_y_origin = y; |
| 419 |
|
| 420 |
XChangeGC (disp, gc, |
| 421 |
GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin, |
| 422 |
&gcv); |
| 423 |
} |
| 424 |
|
| 425 |
XFillRectangle (disp, d, gc, x1, y1, x2 - x1 + 1, y2 - y1 + 1); |
| 426 |
|
| 427 |
if (a) |
| 428 |
{ |
| 429 |
XFreePixmap (disp, gcv.stipple); |
| 430 |
gcv.stipple = 0; |
| 431 |
gcv.fill_style = FillSolid; |
| 432 |
XChangeGC (disp, gc, GCFillStyle, &gcv); |
| 433 |
} |
| 434 |
break; |
| 435 |
|
| 436 |
case 2: // arc |
| 437 |
XDrawArc (disp, d, gc, |
| 438 |
x1 - W/2, y1 - H/2, W-1, H-1, |
| 439 |
(a - 1) * 90*64, (b - 1) * 90*64); |
| 440 |
break; |
| 441 |
} |
| 442 |
} |
| 443 |
} |
| 444 |
#else |
| 445 |
if (0) |
| 446 |
; |
| 447 |
#endif |
| 448 |
#if ENABLE_COMBINING |
| 449 |
else if (IS_COMPOSE (t) && (cc = rxvt_composite[t])) |
| 450 |
{ |
| 451 |
min_it (width, 2); // we only support wcwidth up to 2 |
| 452 |
text_t chrs[2]; |
| 453 |
chrs [1] = NOCHAR; |
| 454 |
|
| 455 |
*chrs = cc->c1; |
| 456 |
rxvt_font *f1 = (*fs)[fs->find_font_idx (cc->c1)]; |
| 457 |
f1->draw (d, x, y, chrs, width, fg, bg); |
| 458 |
|
| 459 |
if (cc->c2 != NOCHAR) |
| 460 |
{ |
| 461 |
bool careful; |
| 462 |
|
| 463 |
// prefer font of first character, for no good reasons |
| 464 |
*chrs = cc->c2; |
| 465 |
rxvt_font *f2 = (f1->has_char (cc->c2, 0, careful) && !careful) |
| 466 |
? f1 |
| 467 |
: (*fs)[fs->find_font_idx (cc->c2)]; |
| 468 |
|
| 469 |
f2->draw (d, x, y, chrs, width, fg, Color_none); |
| 470 |
} |
| 471 |
} |
| 472 |
#endif |
| 473 |
else |
| 474 |
switch (t) |
| 475 |
{ |
| 476 |
case ' ': |
| 477 |
case '\t': |
| 478 |
case ZERO_WIDTH_CHAR: |
| 479 |
case NOCHAR: |
| 480 |
break; |
| 481 |
|
| 482 |
/* |
| 483 |
* If the base font does not support variation selectors, treat them as ZWC. |
| 484 |
* a point could be made to do this for all wcwidth == 0 characters, but I |
| 485 |
* decided against that until more data is available. |
| 486 |
*/ |
| 487 |
case 0xfe00: case 0xfe01: case 0xfe02: case 0xfe03: case 0xfe04: case 0xfe05: case 0xfe06: case 0xfe07: |
| 488 |
case 0xfe08: case 0xfe09: case 0xfe0a: case 0xfe0b: case 0xfe0c: case 0xfe0d: case 0xfe0e: case 0xfe0f: |
| 489 |
break; |
| 490 |
|
| 491 |
default: |
| 492 |
XDrawRectangle (disp, d, gc, x + 2, y + 2, |
| 493 |
fwidth - 4, term->fheight - 4); |
| 494 |
} |
| 495 |
|
| 496 |
x += fwidth; |
| 497 |
} |
| 498 |
} |
| 499 |
|
| 500 |
struct rxvt_font_overflow : rxvt_font |
| 501 |
{ |
| 502 |
struct rxvt_fontset *fs; |
| 503 |
|
| 504 |
rxvt_font_overflow (rxvt_fontset *fs) |
| 505 |
: rxvt_font () |
| 506 |
{ |
| 507 |
this->fs = fs; |
| 508 |
} |
| 509 |
|
| 510 |
rxvt_fontprop properties () |
| 511 |
{ |
| 512 |
rxvt_fontprop p; |
| 513 |
|
| 514 |
p.width = p.height = 1; |
| 515 |
p.ascent = rxvt_fontprop::unset; |
| 516 |
p.weight = rxvt_fontprop::medium; |
| 517 |
p.slant = rxvt_fontprop::roman; |
| 518 |
|
| 519 |
return p; |
| 520 |
} |
| 521 |
|
| 522 |
bool load (const rxvt_fontprop &prop, bool force_prop) |
| 523 |
{ |
| 524 |
width = 1; height = 1; |
| 525 |
ascent = 1; |
| 526 |
descent = (*fs)[2]->descent; |
| 527 |
|
| 528 |
set_name (strdup ("built-in rendition overflow font")); |
| 529 |
|
| 530 |
return true; |
| 531 |
} |
| 532 |
|
| 533 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
| 534 |
{ |
| 535 |
return false; |
| 536 |
} |
| 537 |
|
| 538 |
void draw (rxvt_drawable &d, int x, int y, |
| 539 |
const text_t *text, int len, |
| 540 |
int fg, int bg) |
| 541 |
{ |
| 542 |
while (len) |
| 543 |
{ |
| 544 |
int fid = fs->find_font_idx (*text); |
| 545 |
int w = 1; |
| 546 |
while (w < len && text[w] == NOCHAR) |
| 547 |
w++; |
| 548 |
(*fs)[fid]->draw (d, x, y, text, w, fg, bg); |
| 549 |
text += w; |
| 550 |
len -= w; |
| 551 |
x += term->fwidth * w; |
| 552 |
} |
| 553 |
} |
| 554 |
}; |
| 555 |
|
| 556 |
///////////////////////////////////////////////////////////////////////////// |
| 557 |
|
| 558 |
struct rxvt_font_x11 : rxvt_font |
| 559 |
{ |
| 560 |
rxvt_font_x11 () { f = 0; } |
| 561 |
|
| 562 |
void clear (); |
| 563 |
|
| 564 |
rxvt_fontprop properties (); |
| 565 |
|
| 566 |
bool load (const rxvt_fontprop &prop, bool force_prop); |
| 567 |
|
| 568 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const; |
| 569 |
|
| 570 |
void draw (rxvt_drawable &d, int x, int y, |
| 571 |
const text_t *text, int len, |
| 572 |
int fg, int bg); |
| 573 |
|
| 574 |
bool slow; // whether this is a proportional font or has other funny characteristics |
| 575 |
XFontStruct *f; |
| 576 |
bool enc2b, encm; |
| 577 |
|
| 578 |
char *get_property (XFontStruct *f, Atom property, const char *repl) const; |
| 579 |
bool set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth); |
| 580 |
bool set_properties (rxvt_fontprop &p, XFontStruct *f); |
| 581 |
bool set_properties (rxvt_fontprop &p, const char *name); |
| 582 |
}; |
| 583 |
|
| 584 |
char * |
| 585 |
rxvt_font_x11::get_property (XFontStruct *f, Atom property, const char *repl) const |
| 586 |
{ |
| 587 |
unsigned long value; |
| 588 |
|
| 589 |
if (XGetFontProperty (f, property, &value)) |
| 590 |
return XGetAtomName (term->dpy, value); |
| 591 |
else |
| 592 |
return repl ? strdup (repl) : 0; |
| 593 |
} |
| 594 |
|
| 595 |
rxvt_fontprop |
| 596 |
rxvt_font_x11::properties () |
| 597 |
{ |
| 598 |
rxvt_fontprop p; |
| 599 |
set_properties (p, f); |
| 600 |
return p; |
| 601 |
} |
| 602 |
|
| 603 |
bool |
| 604 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, int height, const char *weight, const char *slant, int avgwidth) |
| 605 |
{ |
| 606 |
p.width = width != rxvt_fontprop::unset ? width |
| 607 |
: avgwidth ? (avgwidth + 1) / 10 |
| 608 |
: (height + 1) / 2; |
| 609 |
p.height = height; |
| 610 |
p.ascent = rxvt_fontprop::unset; |
| 611 |
p.weight = *weight == 'B' || *weight == 'b' ? rxvt_fontprop::bold : rxvt_fontprop::medium; |
| 612 |
p.slant = *slant == 'r' || *slant == 'R' ? rxvt_fontprop::roman : rxvt_fontprop::italic; |
| 613 |
|
| 614 |
return true; |
| 615 |
} |
| 616 |
|
| 617 |
bool |
| 618 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, XFontStruct *f) |
| 619 |
{ |
| 620 |
unsigned long height; |
| 621 |
|
| 622 |
#if 0 |
| 623 |
if (!XGetFontProperty (f, XInternAtom (term->dpy, "PIXEL_SIZE", 0), &height)) |
| 624 |
return false; |
| 625 |
#else |
| 626 |
height = f->ascent + f->descent; |
| 627 |
#endif |
| 628 |
|
| 629 |
unsigned long avgwidth; |
| 630 |
if (!XGetFontProperty (f, term->xa [XA_AVERAGE_WIDTH], &avgwidth)) |
| 631 |
avgwidth = 0; |
| 632 |
|
| 633 |
char *weight = get_property (f, term->xa [XA_WEIGHT_NAME], "medium"); |
| 634 |
char *slant = get_property (f, term->xa [XA_SLANT], "r"); |
| 635 |
|
| 636 |
set_properties (p, height, weight, slant, avgwidth); |
| 637 |
|
| 638 |
free (weight); |
| 639 |
free (slant); |
| 640 |
|
| 641 |
p.ascent = f->ascent; |
| 642 |
|
| 643 |
return true; |
| 644 |
} |
| 645 |
|
| 646 |
bool |
| 647 |
rxvt_font_x11::set_properties (rxvt_fontprop &p, const char *name) |
| 648 |
{ |
| 649 |
dTermDisplay; |
| 650 |
int slashes = 0; |
| 651 |
const char *comp[13]; |
| 652 |
|
| 653 |
for (const char *c = name; *c; c++) |
| 654 |
if (*c == '-') |
| 655 |
{ |
| 656 |
comp[slashes++] = c + 1; |
| 657 |
if (slashes >= 13) |
| 658 |
break; |
| 659 |
} |
| 660 |
|
| 661 |
/* can we short-circuit the costly XLoadQueryFont? */ |
| 662 |
if (slashes >= 13 |
| 663 |
&& (*comp[ 6] >= '1' && *comp[ 6] <= '9') |
| 664 |
&& (*comp[11] >= '0' && *comp[11] <= '9')) |
| 665 |
return set_properties (p, atoi (comp[6]), comp[2], comp[3], atoi (comp[11])); |
| 666 |
|
| 667 |
XFontStruct *f = XLoadQueryFont (disp, name); |
| 668 |
|
| 669 |
if (f) |
| 670 |
{ |
| 671 |
// the font should really exist now. if not, we have a problem |
| 672 |
// (e.g. if the user did xset fp rehash just when we were searching fonts). |
| 673 |
// in that case, just return garbage. |
| 674 |
bool ret = set_properties (p, f); |
| 675 |
XFreeFont (disp, f); |
| 676 |
return ret; |
| 677 |
} |
| 678 |
else |
| 679 |
return false; |
| 680 |
} |
| 681 |
|
| 682 |
// fix the size of scalable fonts |
| 683 |
static bool |
| 684 |
replace_field (char **ptr, const char *name, int index, const char old, const char *replace) |
| 685 |
{ |
| 686 |
int slashes = 0; |
| 687 |
const char *field, *end; |
| 688 |
|
| 689 |
for (const char *c = name; *c; c++) |
| 690 |
if (*c == '-') |
| 691 |
{ |
| 692 |
if (slashes == index) |
| 693 |
field = c + 1; |
| 694 |
|
| 695 |
if (slashes == index + 1) |
| 696 |
end = c; |
| 697 |
|
| 698 |
if (++slashes >= 13) |
| 699 |
break; |
| 700 |
} |
| 701 |
|
| 702 |
if (slashes >= 13 && (!old || *field == old)) |
| 703 |
{ |
| 704 |
size_t len = field - name; |
| 705 |
*ptr = (char *)malloc (len + strlen (replace) + strlen (end) + 1); |
| 706 |
memcpy (*ptr, name, len); |
| 707 |
strcpy (*ptr + len, replace); |
| 708 |
strcat (*ptr, end); |
| 709 |
|
| 710 |
return true; |
| 711 |
} |
| 712 |
else |
| 713 |
{ |
| 714 |
*ptr = strdup (name); |
| 715 |
|
| 716 |
return false; |
| 717 |
} |
| 718 |
} |
| 719 |
|
| 720 |
bool |
| 721 |
rxvt_font_x11::load (const rxvt_fontprop &prop, bool force_prop) |
| 722 |
{ |
| 723 |
dTermDisplay; |
| 724 |
|
| 725 |
clear (); |
| 726 |
|
| 727 |
char field_str[64]; // enough for 128 bits |
| 728 |
|
| 729 |
// first morph the font if required |
| 730 |
if (force_prop) |
| 731 |
{ |
| 732 |
char *fname; |
| 733 |
|
| 734 |
if (name[0] != '-') |
| 735 |
{ |
| 736 |
f = XLoadQueryFont (disp, name); |
| 737 |
|
| 738 |
if (!f) |
| 739 |
return false; |
| 740 |
|
| 741 |
char *new_name = get_property (f, XA_FONT, 0); |
| 742 |
|
| 743 |
if (new_name) |
| 744 |
set_name (new_name); |
| 745 |
else |
| 746 |
rxvt_warn ("font '%s' has no FONT property, continuing without.\n", name); |
| 747 |
|
| 748 |
XFreeFont (disp, f); |
| 749 |
f = 0; |
| 750 |
} |
| 751 |
|
| 752 |
if (prop.weight != rxvt_fontprop::unset) |
| 753 |
{ |
| 754 |
replace_field (&fname, name, 2, 0, |
| 755 |
prop.weight < rxvt_fontprop::bold |
| 756 |
? "medium" : "bold"); |
| 757 |
set_name (fname); |
| 758 |
} |
| 759 |
|
| 760 |
if (prop.slant != rxvt_fontprop::unset) |
| 761 |
{ |
| 762 |
replace_field (&fname, name, 3, 0, |
| 763 |
prop.slant < rxvt_fontprop::italic |
| 764 |
? "r" : "i"); // TODO: handle "o"blique, too |
| 765 |
set_name (fname); |
| 766 |
} |
| 767 |
} |
| 768 |
|
| 769 |
sprintf (field_str, "%d", prop.height == rxvt_fontprop::unset |
| 770 |
? 0 : prop.height); |
| 771 |
|
| 772 |
struct font_weight { |
| 773 |
char *name; |
| 774 |
int diff; |
| 775 |
|
| 776 |
void clear () |
| 777 |
{ |
| 778 |
name = 0; |
| 779 |
diff = 0x7fffffff; |
| 780 |
} |
| 781 |
|
| 782 |
font_weight () { clear (); } |
| 783 |
~font_weight () { free (name); } |
| 784 |
}; |
| 785 |
|
| 786 |
char **list; |
| 787 |
int count; |
| 788 |
list = XListFonts (disp, name, 4000, &count); |
| 789 |
|
| 790 |
set_name (0); |
| 791 |
|
| 792 |
if (!list) |
| 793 |
return false; |
| 794 |
|
| 795 |
font_weight *fonts = new font_weight[count]; |
| 796 |
|
| 797 |
for (int i = 0; i < count; i++) |
| 798 |
{ |
| 799 |
rxvt_fontprop p; |
| 800 |
char *fname; |
| 801 |
|
| 802 |
int diff = 0; |
| 803 |
|
| 804 |
if (replace_field (&fname, list[i], 6, '0', field_str)) |
| 805 |
diff += 10; // slightly penalize scalable fonts |
| 806 |
else |
| 807 |
{ |
| 808 |
free (fname); |
| 809 |
if (replace_field (&fname, list[i], 11, '0', "0")) |
| 810 |
diff += 300; // more heavily penalize what looks like scaled bitmap fonts |
| 811 |
} |
| 812 |
|
| 813 |
if (!set_properties (p, fname) |
| 814 |
// also weed out too large fonts |
| 815 |
|| (prop.height != rxvt_fontprop::unset |
| 816 |
&& p.height > prop.height)) |
| 817 |
{ |
| 818 |
free (fname); |
| 819 |
continue; |
| 820 |
} |
| 821 |
|
| 822 |
if (prop.height != rxvt_fontprop::unset) diff += (prop.height - p.height) * 128; |
| 823 |
if (prop.weight != rxvt_fontprop::unset) diff += abs (prop.weight - p.weight); |
| 824 |
if (prop.slant != rxvt_fontprop::unset) diff += abs (prop.slant - p.slant); |
| 825 |
//if (prop.width != rxvt_fontprop::unset) diff += abs (prop.width - p.width); |
| 826 |
|
| 827 |
fonts[i].name = fname; |
| 828 |
fonts[i].diff = diff; |
| 829 |
} |
| 830 |
|
| 831 |
XFreeFontNames (list); |
| 832 |
|
| 833 |
// this loop only iterates when the guessed font-size is too small |
| 834 |
for (;;) |
| 835 |
{ |
| 836 |
font_weight *best = fonts; |
| 837 |
|
| 838 |
for (font_weight *w = fonts + 1; w < fonts + count; w++) |
| 839 |
if (w->diff < best->diff) |
| 840 |
best = w; |
| 841 |
|
| 842 |
if (!best->name |
| 843 |
|| !(f = XLoadQueryFont (disp, best->name))) |
| 844 |
break; |
| 845 |
|
| 846 |
set_name (best->name); |
| 847 |
best->clear (); |
| 848 |
|
| 849 |
ascent = f->ascent; |
| 850 |
descent = f->descent; |
| 851 |
height = ascent + descent; |
| 852 |
|
| 853 |
if (prop.height == rxvt_fontprop::unset |
| 854 |
|| height <= prop.height) |
| 855 |
break; // font is ready for use |
| 856 |
|
| 857 |
// PIXEL_SIZE small enough, but real height too large |
| 858 |
clear (); |
| 859 |
} |
| 860 |
|
| 861 |
delete [] fonts; |
| 862 |
|
| 863 |
if (!f) |
| 864 |
return false; |
| 865 |
|
| 866 |
char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0); |
| 867 |
char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0); |
| 868 |
|
| 869 |
cs = CS_UNKNOWN; |
| 870 |
|
| 871 |
if (registry && encoding) |
| 872 |
{ |
| 873 |
char charset[64]; |
| 874 |
snprintf (charset, 64, "%s-%s", registry, encoding); |
| 875 |
|
| 876 |
cs = codeset_from_name (charset); |
| 877 |
|
| 878 |
if (cs == CS_UNKNOWN) |
| 879 |
rxvt_warn ("%s: cannot deduce encoding from registry/encoding properties \"%s\", ignoring font.\n", name, charset); |
| 880 |
} |
| 881 |
|
| 882 |
free (registry); |
| 883 |
free (encoding); |
| 884 |
|
| 885 |
if (cs == CS_UNKNOWN) |
| 886 |
{ |
| 887 |
char *value = get_property (f, XA_FONT, 0); |
| 888 |
const char *charset = value; |
| 889 |
|
| 890 |
if (!charset) |
| 891 |
charset = name; |
| 892 |
|
| 893 |
int count = 13; |
| 894 |
while (*charset) |
| 895 |
if (*charset++ == '-' && !--count) |
| 896 |
break; |
| 897 |
|
| 898 |
cs = codeset_from_name (charset); |
| 899 |
if (cs == CS_UNKNOWN) |
| 900 |
rxvt_warn ("%s: cannot deduce encoding from font name property \"%s\", ignoring font.\n", name, charset); |
| 901 |
|
| 902 |
free (value); |
| 903 |
} |
| 904 |
|
| 905 |
if (cs == CS_UNKNOWN) |
| 906 |
{ |
| 907 |
clear (); |
| 908 |
return false; |
| 909 |
} |
| 910 |
|
| 911 |
if (cs == CS_UNICODE) |
| 912 |
cs = CS_UNICODE_16; // X11 can have a max. of 65536 chars per font |
| 913 |
|
| 914 |
encm = f->min_byte1 != 0 || f->max_byte1 != 0; |
| 915 |
enc2b = encm || f->max_char_or_byte2 > 255; |
| 916 |
|
| 917 |
slow = false; |
| 918 |
|
| 919 |
#if 1 // only used for slow detection, TODO optimize |
| 920 |
if (f->min_bounds.width == f->max_bounds.width || !f->per_char) |
| 921 |
width = f->max_bounds.width; |
| 922 |
else |
| 923 |
{ |
| 924 |
slow = true; |
| 925 |
|
| 926 |
int N = f->max_char_or_byte2 - f->min_char_or_byte2; |
| 927 |
|
| 928 |
if (encm) |
| 929 |
N += (f->max_byte1 - f->min_byte1) |
| 930 |
* (f->max_char_or_byte2 - f->min_char_or_byte2 + 1); |
| 931 |
|
| 932 |
while (N) |
| 933 |
{ |
| 934 |
if (f->per_char[N].width > width) |
| 935 |
width = f->per_char[N].width; |
| 936 |
|
| 937 |
--N; |
| 938 |
} |
| 939 |
} |
| 940 |
#endif |
| 941 |
|
| 942 |
width = 1; |
| 943 |
|
| 944 |
for (uint32_t *t = extent_test_chars; t < extent_test_chars + ecb_array_length (extent_test_chars); t++) |
| 945 |
{ |
| 946 |
if (FROM_UNICODE (cs, *t) == NOCHAR) |
| 947 |
continue; |
| 948 |
|
| 949 |
// ignore characters we wouldn't use anyways |
| 950 |
bool careful; |
| 951 |
if (!has_char (*t, &prop, careful)) |
| 952 |
continue; |
| 953 |
|
| 954 |
// the casts are needed in C++11 (see 8.5.1) |
| 955 |
XChar2b ch = { (unsigned char)(*t >> 8), (unsigned char)*t }; |
| 956 |
|
| 957 |
XCharStruct g; |
| 958 |
int dir_ret, asc_ret, des_ret; |
| 959 |
XTextExtents16 (f, &ch, 1, &dir_ret, &asc_ret, &des_ret, &g); |
| 960 |
|
| 961 |
int wcw = WCWIDTH (*t); |
| 962 |
if (wcw > 0) g.width = (g.width + wcw - 1) / wcw; |
| 963 |
|
| 964 |
if (width < g.width) width = g.width; |
| 965 |
} |
| 966 |
|
| 967 |
#if 0 // do it per-character |
| 968 |
if (prop && width > prop->width) |
| 969 |
{ |
| 970 |
clear (); |
| 971 |
return false; |
| 972 |
} |
| 973 |
#endif |
| 974 |
|
| 975 |
return true; |
| 976 |
} |
| 977 |
|
| 978 |
void |
| 979 |
rxvt_font_x11::clear () |
| 980 |
{ |
| 981 |
if (f) |
| 982 |
{ |
| 983 |
XFreeFont (term->dpy, f); |
| 984 |
f = 0; |
| 985 |
} |
| 986 |
} |
| 987 |
|
| 988 |
bool |
| 989 |
rxvt_font_x11::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
| 990 |
{ |
| 991 |
careful = false; |
| 992 |
|
| 993 |
uint32_t ch = FROM_UNICODE (cs, unicode); |
| 994 |
|
| 995 |
if (ch == NOCHAR) |
| 996 |
return false; |
| 997 |
|
| 998 |
/* check whether the character exists in _this_ font. horrible. */ |
| 999 |
XCharStruct *xcs; |
| 1000 |
|
| 1001 |
if (encm) |
| 1002 |
{ |
| 1003 |
unsigned char byte1 = ch >> 8; |
| 1004 |
unsigned char byte2 = ch & 255; |
| 1005 |
|
| 1006 |
if (byte1 < f->min_byte1 || byte1 > f->max_byte1 |
| 1007 |
|| byte2 < f->min_char_or_byte2 || byte2 > f->max_char_or_byte2) |
| 1008 |
return false; |
| 1009 |
|
| 1010 |
if (f->per_char) |
| 1011 |
{ |
| 1012 |
int D = f->max_char_or_byte2 - f->min_char_or_byte2 + 1; |
| 1013 |
int N = (byte1 - f->min_byte1) * D + byte2 - f->min_char_or_byte2; |
| 1014 |
|
| 1015 |
xcs = f->per_char + N; |
| 1016 |
} |
| 1017 |
else |
| 1018 |
xcs = &f->max_bounds; |
| 1019 |
} |
| 1020 |
else |
| 1021 |
{ |
| 1022 |
if (ch < f->min_char_or_byte2 || ch > f->max_char_or_byte2) |
| 1023 |
return false; |
| 1024 |
|
| 1025 |
if (f->per_char) |
| 1026 |
xcs = f->per_char + (ch - f->min_char_or_byte2); |
| 1027 |
else |
| 1028 |
xcs = &f->max_bounds; |
| 1029 |
} |
| 1030 |
|
| 1031 |
if (xcs->lbearing == 0 && xcs->rbearing == 0 && xcs->width == 0 |
| 1032 |
&& xcs->ascent == 0 && xcs->descent == 0) |
| 1033 |
return false; |
| 1034 |
|
| 1035 |
if (!prop || prop->width == rxvt_fontprop::unset) |
| 1036 |
return true; |
| 1037 |
|
| 1038 |
// check whether character overlaps previous/next character |
| 1039 |
int w = xcs->rbearing - xcs->lbearing; |
| 1040 |
int wcw = max (WCWIDTH (unicode), 1); |
| 1041 |
|
| 1042 |
careful = xcs->lbearing < 0 || xcs->rbearing > prop->width * wcw; |
| 1043 |
|
| 1044 |
if (careful && !OVERLAP_OK (w, wcw, prop)) |
| 1045 |
return false; |
| 1046 |
|
| 1047 |
return true; |
| 1048 |
} |
| 1049 |
|
| 1050 |
void |
| 1051 |
rxvt_font_x11::draw (rxvt_drawable &d, int x, int y, |
| 1052 |
const text_t *text, int len, |
| 1053 |
int fg, int bg) |
| 1054 |
{ |
| 1055 |
// this looks like a mess /. |
| 1056 |
// and it is a mess /. |
| 1057 |
// yet we are trying to be perfect /. |
| 1058 |
// but the result still isn't perfect /. |
| 1059 |
|
| 1060 |
dTermDisplay; |
| 1061 |
dTermGC; |
| 1062 |
|
| 1063 |
bool slow = this->slow |
| 1064 |
|| width != term->fwidth |
| 1065 |
|| height != term->fheight |
| 1066 |
|| ascent != f->ascent; |
| 1067 |
|
| 1068 |
int base = ascent; // sorry, incorrect: term->fbase; |
| 1069 |
|
| 1070 |
XGCValues v; |
| 1071 |
v.foreground = term->pix_colors[fg]; |
| 1072 |
v.font = f->fid; |
| 1073 |
|
| 1074 |
if (enc2b) |
| 1075 |
{ |
| 1076 |
const XChar2b *xc = enc_xchar2b (text, len, cs, slow); |
| 1077 |
|
| 1078 |
if (bg == Color_bg && !slow) |
| 1079 |
{ |
| 1080 |
v.background = term->pix_colors[bg]; |
| 1081 |
XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v); |
| 1082 |
XDrawImageString16 (disp, d, gc, x, y + base, xc, len); |
| 1083 |
} |
| 1084 |
else |
| 1085 |
{ |
| 1086 |
clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
| 1087 |
|
| 1088 |
XChangeGC (disp, gc, GCForeground | GCFont, &v); |
| 1089 |
|
| 1090 |
if (slow) |
| 1091 |
{ |
| 1092 |
do |
| 1093 |
{ |
| 1094 |
if (xc->byte1 || xc->byte2) |
| 1095 |
XDrawString16 (disp, d, gc, x, y + base, xc, 1); |
| 1096 |
|
| 1097 |
x += term->fwidth; |
| 1098 |
xc++; len--; |
| 1099 |
} |
| 1100 |
while (len); |
| 1101 |
} |
| 1102 |
else |
| 1103 |
XDrawString16 (disp, d, gc, x, y + base, xc, len); |
| 1104 |
} |
| 1105 |
} |
| 1106 |
else |
| 1107 |
{ |
| 1108 |
const char *xc = enc_char (text, len, cs, slow); |
| 1109 |
|
| 1110 |
if (bg == Color_bg && !slow) |
| 1111 |
{ |
| 1112 |
v.background = term->pix_colors[bg]; |
| 1113 |
XChangeGC (disp, gc, GCForeground | GCBackground | GCFont, &v); |
| 1114 |
XDrawImageString (disp, d, gc, x, y + base, xc, len); |
| 1115 |
} |
| 1116 |
else |
| 1117 |
{ |
| 1118 |
clear_rect (d, x, y, term->fwidth * len, term->fheight, bg); |
| 1119 |
|
| 1120 |
XChangeGC (disp, gc, GCForeground | GCFont, &v); |
| 1121 |
|
| 1122 |
if (slow) |
| 1123 |
{ |
| 1124 |
do |
| 1125 |
{ |
| 1126 |
if (*xc) |
| 1127 |
XDrawString (disp, d, gc, x, y + base, xc, 1); |
| 1128 |
|
| 1129 |
x += term->fwidth; |
| 1130 |
xc++; len--; |
| 1131 |
} |
| 1132 |
while (len); |
| 1133 |
} |
| 1134 |
else |
| 1135 |
XDrawString (disp, d, gc, x, y + base, xc, len); |
| 1136 |
} |
| 1137 |
} |
| 1138 |
} |
| 1139 |
|
| 1140 |
///////////////////////////////////////////////////////////////////////////// |
| 1141 |
|
| 1142 |
#if XFT |
| 1143 |
|
| 1144 |
struct rxvt_font_xft : rxvt_font |
| 1145 |
{ |
| 1146 |
#if XFT_CHAR_CACHE |
| 1147 |
// we cache the qascii range xoffsets in the name of speed, |
| 1148 |
// expecting terminals to deal mostly with these characters |
| 1149 |
// we also assume the xoff always fits into uint8_t, |
| 1150 |
// which is questionable, but let's see... |
| 1151 |
// also, it is uncomfortably big, due to the uints. |
| 1152 |
enum { char_cache_min = 0x20, char_cache_max = 0x7e }; |
| 1153 |
uint8_t xoff_cache [char_cache_max - char_cache_min + 1]; |
| 1154 |
FT_UInt glyph_cache [char_cache_max - char_cache_min + 1]; |
| 1155 |
#endif |
| 1156 |
|
| 1157 |
rxvt_font_xft () |
| 1158 |
{ |
| 1159 |
f = 0; |
| 1160 |
} |
| 1161 |
|
| 1162 |
void clear (); |
| 1163 |
|
| 1164 |
rxvt_fontprop properties (); |
| 1165 |
|
| 1166 |
bool load (const rxvt_fontprop &prop, bool force_prop); |
| 1167 |
|
| 1168 |
void draw (rxvt_drawable &d, int x, int y, |
| 1169 |
const text_t *text, int len, |
| 1170 |
int fg, int bg); |
| 1171 |
|
| 1172 |
bool has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const; |
| 1173 |
|
| 1174 |
protected: |
| 1175 |
XftFont *f; |
| 1176 |
}; |
| 1177 |
|
| 1178 |
void |
| 1179 |
rxvt_font_xft::clear () |
| 1180 |
{ |
| 1181 |
if (f) |
| 1182 |
{ |
| 1183 |
XftFontClose (term->dpy, f); |
| 1184 |
f = 0; |
| 1185 |
} |
| 1186 |
} |
| 1187 |
|
| 1188 |
rxvt_fontprop |
| 1189 |
rxvt_font_xft::properties () |
| 1190 |
{ |
| 1191 |
rxvt_fontprop p; |
| 1192 |
|
| 1193 |
FT_Face face = XftLockFace (f); |
| 1194 |
|
| 1195 |
p.width = width; |
| 1196 |
p.height = height; |
| 1197 |
p.ascent = ascent; |
| 1198 |
p.weight = face->style_flags & FT_STYLE_FLAG_BOLD |
| 1199 |
? rxvt_fontprop::bold : rxvt_fontprop::medium; |
| 1200 |
p.slant = face->style_flags & FT_STYLE_FLAG_ITALIC |
| 1201 |
? rxvt_fontprop::italic : rxvt_fontprop::roman; |
| 1202 |
|
| 1203 |
XftUnlockFace (f); |
| 1204 |
|
| 1205 |
return p; |
| 1206 |
} |
| 1207 |
|
| 1208 |
bool |
| 1209 |
rxvt_font_xft::load (const rxvt_fontprop &prop, bool force_prop) |
| 1210 |
{ |
| 1211 |
dTermDisplay; |
| 1212 |
|
| 1213 |
clear (); |
| 1214 |
|
| 1215 |
FcPattern *p = FcNameParse ((FcChar8 *) name); |
| 1216 |
|
| 1217 |
if (!p) |
| 1218 |
return false; |
| 1219 |
|
| 1220 |
FcValue v; |
| 1221 |
|
| 1222 |
if (prop.height != rxvt_fontprop::unset |
| 1223 |
&& (FcPatternGet (p, FC_PIXEL_SIZE, 0, &v) != FcResultMatch |
| 1224 |
&& FcPatternGet (p, FC_SIZE, 0, &v) != FcResultMatch)) |
| 1225 |
FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height); |
| 1226 |
|
| 1227 |
if (prop.weight != rxvt_fontprop::unset |
| 1228 |
&& (force_prop || FcPatternGet (p, FC_WEIGHT, 0, &v) != FcResultMatch)) |
| 1229 |
FcPatternAddInteger (p, FC_WEIGHT, prop.weight); |
| 1230 |
|
| 1231 |
if (prop.slant != rxvt_fontprop::unset |
| 1232 |
&& (force_prop || FcPatternGet (p, FC_SLANT, 0, &v) != FcResultMatch)) |
| 1233 |
FcPatternAddInteger (p, FC_SLANT, prop.slant); |
| 1234 |
|
| 1235 |
#if 0 // clipping unfortunately destroys our precious double-width-characters |
| 1236 |
// clip width, we can't do better, or can we? |
| 1237 |
if (FcPatternGet (p, FC_CHAR_WIDTH, 0, &v) != FcResultMatch) |
| 1238 |
FcPatternAddInteger (p, FC_CHAR_WIDTH, prop.width); |
| 1239 |
#endif |
| 1240 |
|
| 1241 |
if (FcPatternGet (p, FC_MINSPACE, 0, &v) != FcResultMatch) |
| 1242 |
FcPatternAddBool (p, FC_MINSPACE, 1); |
| 1243 |
|
| 1244 |
// store generated name so iso14755 view gives better results |
| 1245 |
set_name ((char *)FcNameUnparse (p)); |
| 1246 |
|
| 1247 |
XftResult result; |
| 1248 |
FcPattern *match = XftFontMatch (disp, term->display->screen, p, &result); |
| 1249 |
|
| 1250 |
FcPatternDestroy (p); |
| 1251 |
|
| 1252 |
if (!match) |
| 1253 |
return false; |
| 1254 |
|
| 1255 |
int ftheight = 0; |
| 1256 |
bool success = true; |
| 1257 |
|
| 1258 |
for (;;) |
| 1259 |
{ |
| 1260 |
p = FcPatternDuplicate (match); |
| 1261 |
f = XftFontOpenPattern (disp, p); |
| 1262 |
|
| 1263 |
if (!f) |
| 1264 |
{ |
| 1265 |
FcPatternDestroy (p); |
| 1266 |
success = false; |
| 1267 |
break; |
| 1268 |
} |
| 1269 |
|
| 1270 |
FT_Face face = XftLockFace (f); |
| 1271 |
|
| 1272 |
// fuck me plenty: XftLockFace can actually return 0. try not to crash. |
| 1273 |
// we also assume blindly that if the first lock succeeds, then subsequent |
| 1274 |
// locks will also succeed. |
| 1275 |
if (!face) |
| 1276 |
{ |
| 1277 |
XftFontClose (disp, f); |
| 1278 |
success = false; |
| 1279 |
break; |
| 1280 |
} |
| 1281 |
|
| 1282 |
ascent = (face->size->metrics.ascender + 63) >> 6; |
| 1283 |
descent = (-face->size->metrics.descender + 63) >> 6; |
| 1284 |
height = max (ascent + descent, (face->size->metrics.height + 63) >> 6); |
| 1285 |
width = 0; |
| 1286 |
|
| 1287 |
bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE; |
| 1288 |
|
| 1289 |
XftUnlockFace (f); |
| 1290 |
|
| 1291 |
int glheight = height; |
| 1292 |
|
| 1293 |
for (uint32_t *t = extent_test_chars; t < extent_test_chars + ecb_array_length (extent_test_chars); t++) |
| 1294 |
{ |
| 1295 |
FcChar32 ch = *t; |
| 1296 |
|
| 1297 |
if (cs != CS_UNICODE |
| 1298 |
&& ch > 0x100 |
| 1299 |
&& FROM_UNICODE (cs, ch) == NOCHAR) |
| 1300 |
continue; |
| 1301 |
|
| 1302 |
// ignore characters we wouldn't use anyways |
| 1303 |
bool careful; |
| 1304 |
if (!has_char (*t, &prop, careful)) |
| 1305 |
continue; |
| 1306 |
|
| 1307 |
XGlyphInfo g; |
| 1308 |
XftTextExtents32 (disp, f, &ch, 1, &g); |
| 1309 |
|
| 1310 |
g.width -= g.x; |
| 1311 |
|
| 1312 |
int wcw = WCWIDTH (ch); |
| 1313 |
if (wcw > 0) g.width = (g.width + wcw - 1) / wcw; |
| 1314 |
|
| 1315 |
if (width < g.width ) width = g.width; |
| 1316 |
if (height < g.height ) height = g.height; |
| 1317 |
if (glheight < g.height - g.y) glheight = g.height - g.y; |
| 1318 |
} |
| 1319 |
|
| 1320 |
if (!width) |
| 1321 |
{ |
| 1322 |
rxvt_warn ("unable to calculate font width for '%s', using max_advance_width.\n", name); |
| 1323 |
width = f->max_advance_width; |
| 1324 |
break; |
| 1325 |
} |
| 1326 |
|
| 1327 |
if (prop.height == rxvt_fontprop::unset |
| 1328 |
|| (height <= prop.height && glheight <= prop.height) |
| 1329 |
|| height <= 2 |
| 1330 |
|| !scalable) |
| 1331 |
break; |
| 1332 |
|
| 1333 |
if (ftheight) |
| 1334 |
{ |
| 1335 |
// take smaller steps near the end |
| 1336 |
if (height > prop.height + 1) ftheight++; |
| 1337 |
if (height > prop.height + 2) ftheight++; |
| 1338 |
if (height > prop.height + 3) ftheight++; |
| 1339 |
|
| 1340 |
ftheight -= height - prop.height; |
| 1341 |
} |
| 1342 |
else |
| 1343 |
ftheight = prop.height - 1; |
| 1344 |
|
| 1345 |
XftFontClose (disp, f); |
| 1346 |
FcPatternDel (match, FC_PIXEL_SIZE); |
| 1347 |
FcPatternAddInteger (match, FC_PIXEL_SIZE, ftheight); |
| 1348 |
} |
| 1349 |
|
| 1350 |
FcPatternDestroy (match); |
| 1351 |
|
| 1352 |
#if 0 // do it per-character |
| 1353 |
if (prop.width != rxvt_fontprop::unset && width > prop.width) |
| 1354 |
{ |
| 1355 |
clear (); |
| 1356 |
success = false; |
| 1357 |
} |
| 1358 |
#endif |
| 1359 |
|
| 1360 |
#if XFT_CHAR_CACHE |
| 1361 |
// populate char cache |
| 1362 |
for (FcChar16 ch = char_cache_min; ch <= char_cache_max; ++ch) |
| 1363 |
{ |
| 1364 |
FT_UInt glyph = XftCharIndex (disp, f, ch); |
| 1365 |
glyph_cache [ch - char_cache_min] = glyph; |
| 1366 |
|
| 1367 |
XGlyphInfo g; |
| 1368 |
XftGlyphExtents (disp, f, &glyph, 1, &g); |
| 1369 |
xoff_cache [ch - char_cache_min] = g.xOff; |
| 1370 |
} |
| 1371 |
#endif |
| 1372 |
|
| 1373 |
return success; |
| 1374 |
} |
| 1375 |
|
| 1376 |
bool |
| 1377 |
rxvt_font_xft::has_char (unicode_t unicode, const rxvt_fontprop *prop, bool &careful) const |
| 1378 |
{ |
| 1379 |
careful = false; |
| 1380 |
|
| 1381 |
// handle non-bmp chars when text_t is 16 bit |
| 1382 |
#if ENABLE_COMBINING && !UNICODE_3 |
| 1383 |
if (ecb_expect_false (IS_COMPOSE (unicode))) |
| 1384 |
if (compose_char *cc = rxvt_composite [unicode]) |
| 1385 |
if (cc->c2 == NOCHAR) |
| 1386 |
unicode = cc->c1; |
| 1387 |
else |
| 1388 |
return false; |
| 1389 |
else |
| 1390 |
return false; |
| 1391 |
#endif |
| 1392 |
|
| 1393 |
FcChar32 chr = unicode; |
| 1394 |
|
| 1395 |
if (!XftCharExists (term->dpy, f, chr)) |
| 1396 |
return false; |
| 1397 |
|
| 1398 |
if (!prop || prop->width == rxvt_fontprop::unset) |
| 1399 |
return true; |
| 1400 |
|
| 1401 |
int wcw = max (WCWIDTH (chr), 1); |
| 1402 |
|
| 1403 |
XGlyphInfo g; |
| 1404 |
XftTextExtents32 (term->dpy, f, &chr, 1, &g); |
| 1405 |
|
| 1406 |
int cwidth = prop->width * wcw; |
| 1407 |
|
| 1408 |
// use same adjustments as in ->draw, see there |
| 1409 |
g.x += g.xOff ? cwidth - g.xOff >> 1 : 0; |
| 1410 |
g.x += g.xOff ? 0 : cwidth; |
| 1411 |
|
| 1412 |
int w = g.width - g.x; |
| 1413 |
|
| 1414 |
careful = g.x > 0 || w > cwidth; |
| 1415 |
|
| 1416 |
if (careful && !OVERLAP_OK (w, wcw, prop)) |
| 1417 |
return false; |
| 1418 |
|
| 1419 |
// this weeds out _totally_ broken fonts, or glyphs |
| 1420 |
if (!OVERLAP_OK (g.xOff, wcw, prop)) |
| 1421 |
return false; |
| 1422 |
|
| 1423 |
return true; |
| 1424 |
} |
| 1425 |
|
| 1426 |
void |
| 1427 |
rxvt_font_xft::draw (rxvt_drawable &d, int x, int y, |
| 1428 |
const text_t *text, int len, |
| 1429 |
int fg, int bg) |
| 1430 |
{ |
| 1431 |
XftGlyphSpec *enc = rxvt_temp_buf<XftGlyphSpec> (len); |
| 1432 |
XftGlyphSpec *ep = enc; |
| 1433 |
|
| 1434 |
dTermDisplay; |
| 1435 |
dTermGC; |
| 1436 |
|
| 1437 |
int w = term->fwidth * len; |
| 1438 |
int h = term->fheight; |
| 1439 |
|
| 1440 |
bool buffered = bg >= Color_transparent |
| 1441 |
&& term->option (Opt_buffered); |
| 1442 |
|
| 1443 |
// cut trailing spaces |
| 1444 |
while (len && text [len - 1] == ' ') |
| 1445 |
len--; |
| 1446 |
|
| 1447 |
int x_ = buffered ? 0 : x; |
| 1448 |
int y_ = buffered ? 0 : y; |
| 1449 |
|
| 1450 |
while (len) |
| 1451 |
{ |
| 1452 |
int cwidth = term->fwidth; |
| 1453 |
FcChar32 chr = *text++; len--; |
| 1454 |
|
| 1455 |
while (len && *text == NOCHAR) |
| 1456 |
text++, len--, cwidth += term->fwidth; |
| 1457 |
|
| 1458 |
if (chr != ' ') // skip spaces |
| 1459 |
{ |
| 1460 |
// handle non-bmp chars when text_t is 16 bit |
| 1461 |
#if ENABLE_COMBINING && !UNICODE_3 |
| 1462 |
if (ecb_expect_false (IS_COMPOSE (chr))) |
| 1463 |
if (compose_char *cc = rxvt_composite [chr]) |
| 1464 |
if (cc->c2 == NOCHAR) |
| 1465 |
chr = cc->c1; |
| 1466 |
#endif |
| 1467 |
|
| 1468 |
#if 0 |
| 1469 |
FT_UInt glyphs [decltype (exp)::max_size]; |
| 1470 |
|
| 1471 |
for (int i = 0; i < nchrs; ++i) |
| 1472 |
glyphs [i] = XftCharIndex (disp, f, chrs [i]); |
| 1473 |
|
| 1474 |
for (int i = 0; i < nchrs; ++i) |
| 1475 |
{ |
| 1476 |
XGlyphInfo ep; |
| 1477 |
XftGlyphExtents (disp, f, glyphs+i, 1, &ep); |
| 1478 |
printf ("gs %4x g %4x + %3d,%3d o %3d,%3d wh %3d,%3d\n", chrs[i],glyphs[i],ep.x,ep.y,ep.xOff,ep.yOff,ep.width,ep.height); |
| 1479 |
} |
| 1480 |
#endif |
| 1481 |
|
| 1482 |
FT_UInt glyph; |
| 1483 |
int xOff; |
| 1484 |
|
| 1485 |
#if XFT_CHAR_CACHE |
| 1486 |
if (ecb_expect_true (IN_RANGE_INC (chr, char_cache_min, char_cache_max))) |
| 1487 |
{ |
| 1488 |
glyph = glyph_cache [chr - char_cache_min]; |
| 1489 |
xOff = xoff_cache [chr - char_cache_min]; |
| 1490 |
} |
| 1491 |
else |
| 1492 |
#endif |
| 1493 |
{ |
| 1494 |
glyph = XftCharIndex (disp, f, chr); |
| 1495 |
XGlyphInfo extents; |
| 1496 |
XftGlyphExtents (disp, f, &glyph, 1, &extents); |
| 1497 |
xOff = extents.xOff; |
| 1498 |
} |
| 1499 |
|
| 1500 |
ep->glyph = glyph; |
| 1501 |
ep->x = x_; |
| 1502 |
ep->y = y_ + ascent; |
| 1503 |
|
| 1504 |
// the xft font cell might differ from the terminal font cell, |
| 1505 |
// in which case we use the average between the two. |
| 1506 |
ep->x += xOff ? cwidth - xOff >> 1 : 0; |
| 1507 |
|
| 1508 |
// xft/freetype represent combining characters as characters with zero |
| 1509 |
// width rendered over the previous character with some fonts, while |
| 1510 |
// in other fonts, they are considered normal characters, while yet |
| 1511 |
// in other fonts, they are shifted all over the place. |
| 1512 |
// we handle the first two cases by keying off on xOff being 0 |
| 1513 |
// for zero-width chars. normally, we would add extents.xOff |
| 1514 |
// of the base character here, but we don't have that, so we use cwidth. |
| 1515 |
ep->x += xOff ? 0 : cwidth; |
| 1516 |
|
| 1517 |
++ep; |
| 1518 |
} |
| 1519 |
|
| 1520 |
x_ += cwidth; |
| 1521 |
} |
| 1522 |
|
| 1523 |
if (buffered) |
| 1524 |
{ |
| 1525 |
if (ep != enc) |
| 1526 |
{ |
| 1527 |
rxvt_drawable &d2 = d.screen->scratch_drawable (w, h); |
| 1528 |
|
| 1529 |
#ifdef HAVE_IMG |
| 1530 |
Picture dst = 0; // the only assignment is done conditionally in the following if condition |
| 1531 |
|
| 1532 |
if (term->bg_img |
| 1533 |
&& (bg == Color_transparent || bg == Color_bg |
| 1534 |
|| (bg >= 0 && !term->pix_colors[bg].is_opaque () && ((dst = XftDrawPicture (d2)))))) |
| 1535 |
{ |
| 1536 |
int src_x = x, src_y = y; |
| 1537 |
|
| 1538 |
if (term->bg_flags & rxvt_term::BG_IS_TRANSPARENT) |
| 1539 |
{ |
| 1540 |
src_x += term->window_vt_x; |
| 1541 |
src_y += term->window_vt_y; |
| 1542 |
} |
| 1543 |
|
| 1544 |
if (term->bg_img->w >= src_x + w |
| 1545 |
&& term->bg_img->h >= src_y + h) |
| 1546 |
{ |
| 1547 |
XCopyArea (disp, term->bg_img->pm, d2, gc, |
| 1548 |
src_x, src_y, w, h, 0, 0); |
| 1549 |
} |
| 1550 |
else |
| 1551 |
{ |
| 1552 |
XGCValues gcv; |
| 1553 |
|
| 1554 |
gcv.fill_style = FillTiled; |
| 1555 |
gcv.tile = term->bg_img->pm; |
| 1556 |
gcv.ts_x_origin = -src_x; |
| 1557 |
gcv.ts_y_origin = -src_y; |
| 1558 |
|
| 1559 |
XChangeGC (disp, gc, |
| 1560 |
GCTile | GCTileStipXOrigin | GCTileStipYOrigin | GCFillStyle, |
| 1561 |
&gcv); |
| 1562 |
|
| 1563 |
XFillRectangle (disp, d2, gc, 0, 0, w, h); |
| 1564 |
|
| 1565 |
gcv.fill_style = FillSolid; |
| 1566 |
XChangeGC (disp, gc, GCFillStyle, &gcv); |
| 1567 |
} |
| 1568 |
|
| 1569 |
if (dst) |
| 1570 |
{ |
| 1571 |
Picture solid_color_pict = XftDrawSrcPicture (d2, &term->pix_colors[bg].c); |
| 1572 |
|
| 1573 |
// dst can only be set when bg >= 0 |
| 1574 |
XRenderComposite (disp, PictOpOver, solid_color_pict, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 1575 |
} |
| 1576 |
} |
| 1577 |
else |
| 1578 |
#endif |
| 1579 |
XftDrawRect (d2, &term->pix_colors[bg >= 0 ? bg : Color_bg].c, 0, 0, w, h); |
| 1580 |
|
| 1581 |
XftDrawGlyphSpec (d2, &term->pix_colors[fg].c, f, enc, ep - enc); |
| 1582 |
XCopyArea (disp, d2, d, gc, 0, 0, w, h, x, y); |
| 1583 |
} |
| 1584 |
else |
| 1585 |
clear_rect (d, x, y, w, h, bg); |
| 1586 |
} |
| 1587 |
else |
| 1588 |
{ |
| 1589 |
clear_rect (d, x, y, w, h, bg); |
| 1590 |
XftDrawGlyphSpec (d, &term->pix_colors[fg].c, f, enc, ep - enc); |
| 1591 |
} |
| 1592 |
} |
| 1593 |
|
| 1594 |
#endif |
| 1595 |
|
| 1596 |
///////////////////////////////////////////////////////////////////////////// |
| 1597 |
|
| 1598 |
rxvt_fontset::rxvt_fontset (rxvt_term *term) |
| 1599 |
: fontdesc (0), term (term) |
| 1600 |
{ |
| 1601 |
clear (); |
| 1602 |
} |
| 1603 |
|
| 1604 |
rxvt_fontset::~rxvt_fontset () |
| 1605 |
{ |
| 1606 |
clear (); |
| 1607 |
} |
| 1608 |
|
| 1609 |
void |
| 1610 |
rxvt_fontset::clear () |
| 1611 |
{ |
| 1612 |
prop.width = prop.height = prop.ascent = prop.weight = prop.slant |
| 1613 |
= rxvt_fontprop::unset; |
| 1614 |
force_prop = false; |
| 1615 |
|
| 1616 |
for (rxvt_font **i = fonts.begin (); i != fonts.end (); i++) |
| 1617 |
(*i)->unref (); |
| 1618 |
|
| 1619 |
for (pagemap **p = fmap.begin (); p != fmap.end (); p++) |
| 1620 |
delete *p; |
| 1621 |
|
| 1622 |
free (fontdesc); fontdesc = 0; |
| 1623 |
|
| 1624 |
fonts.clear (); |
| 1625 |
|
| 1626 |
fallback = fallback_fonts; |
| 1627 |
} |
| 1628 |
|
| 1629 |
void |
| 1630 |
rxvt_fontset::prepare_font (rxvt_font *font, codeset cs) |
| 1631 |
{ |
| 1632 |
font->set_term (term); |
| 1633 |
|
| 1634 |
font->cs = cs; |
| 1635 |
font->loaded = false; |
| 1636 |
} |
| 1637 |
|
| 1638 |
rxvt_font * |
| 1639 |
rxvt_fontset::new_font (const char *name, codeset cs) |
| 1640 |
{ |
| 1641 |
rxvt_font *f; |
| 1642 |
|
| 1643 |
if (!name || !*name) |
| 1644 |
{ |
| 1645 |
name = ""; |
| 1646 |
f = new rxvt_font_default (this); |
| 1647 |
} |
| 1648 |
#if XFT |
| 1649 |
else if (!strncmp (name, "xft:", 4)) |
| 1650 |
{ |
| 1651 |
name += 4; |
| 1652 |
f = new rxvt_font_xft (); |
| 1653 |
} |
| 1654 |
#endif |
| 1655 |
else if (!strncmp (name, "x:", 2)) |
| 1656 |
{ |
| 1657 |
name += 2; |
| 1658 |
f = new rxvt_font_x11; |
| 1659 |
} |
| 1660 |
else |
| 1661 |
f = new rxvt_font_x11; |
| 1662 |
|
| 1663 |
f->set_name (strdup (name)); |
| 1664 |
prepare_font (f, cs); |
| 1665 |
|
| 1666 |
return f; |
| 1667 |
} |
| 1668 |
|
| 1669 |
///////////////////////////////////////////////////////////////////////////// |
| 1670 |
|
| 1671 |
void |
| 1672 |
rxvt_fontset::push_font (rxvt_font *font) |
| 1673 |
{ |
| 1674 |
// the fontCount index is reserved for the overflow font, it is only |
| 1675 |
// necessary when we get fontCount or more fonts, as they cannot be |
| 1676 |
// represented in the rendition. |
| 1677 |
if (fonts.size () == fontCount) |
| 1678 |
{ |
| 1679 |
rxvt_font *f = new rxvt_font_overflow (this); |
| 1680 |
|
| 1681 |
prepare_font (f, CS_UNICODE); |
| 1682 |
fonts.push_back (f); |
| 1683 |
} |
| 1684 |
|
| 1685 |
fonts.push_back (font); |
| 1686 |
} |
| 1687 |
|
| 1688 |
void |
| 1689 |
rxvt_fontset::add_fonts (const char *desc) |
| 1690 |
{ |
| 1691 |
if (desc) |
| 1692 |
{ |
| 1693 |
char buf[512]; |
| 1694 |
const char *end; |
| 1695 |
|
| 1696 |
do |
| 1697 |
{ |
| 1698 |
while (*desc && *desc <= ' ') |
| 1699 |
desc++; |
| 1700 |
|
| 1701 |
codeset cs = CS_UNICODE; |
| 1702 |
|
| 1703 |
if (*desc == '[') |
| 1704 |
{ |
| 1705 |
char spec[256]; |
| 1706 |
const char *extra = ++desc; // not yet used |
| 1707 |
|
| 1708 |
desc = strchr (desc, ']'); |
| 1709 |
|
| 1710 |
if (!desc) |
| 1711 |
{ |
| 1712 |
rxvt_warn ("ERROR: opening '[' without closing ']' in font specification, trying to continue.\n"); |
| 1713 |
break; |
| 1714 |
} |
| 1715 |
|
| 1716 |
memcpy (spec, extra, min (desc - extra, 255)); |
| 1717 |
spec[min (desc - extra, 255)] = 0; |
| 1718 |
|
| 1719 |
if (!strncmp (extra, "codeset=", sizeof ("codeset=") - 1)) |
| 1720 |
cs = codeset_from_name (spec + sizeof ("codeset=") - 1); |
| 1721 |
else |
| 1722 |
rxvt_warn ("unknown parameter '%s' in font specification, skipping.\n", spec); |
| 1723 |
|
| 1724 |
desc++; |
| 1725 |
while (*desc <= ' ' && *desc) desc++; |
| 1726 |
} |
| 1727 |
|
| 1728 |
end = strchr (desc, ','); |
| 1729 |
if (!end) |
| 1730 |
end = desc + strlen (desc); |
| 1731 |
|
| 1732 |
if (end - desc < 511) |
| 1733 |
{ |
| 1734 |
memcpy (buf, desc, end - desc); |
| 1735 |
buf[end - desc] = 0; |
| 1736 |
|
| 1737 |
push_font (new_font (buf, cs)); |
| 1738 |
} |
| 1739 |
else |
| 1740 |
rxvt_warn ("fontset element too long (>511 bytes), ignored.\n"); |
| 1741 |
|
| 1742 |
desc = end + 1; |
| 1743 |
} |
| 1744 |
while (*end); |
| 1745 |
} |
| 1746 |
} |
| 1747 |
|
| 1748 |
bool |
| 1749 |
rxvt_fontset::realize_font (int i) |
| 1750 |
{ |
| 1751 |
if (i < 0 || i >= fonts.size ()) |
| 1752 |
return false; |
| 1753 |
|
| 1754 |
if (fonts[i]->loaded) |
| 1755 |
return true; |
| 1756 |
|
| 1757 |
fonts[i]->loaded = true; |
| 1758 |
|
| 1759 |
if (!fonts[i]->load (prop, force_prop)) |
| 1760 |
{ |
| 1761 |
fonts[i]->cs = CS_UNKNOWN; |
| 1762 |
return false; |
| 1763 |
} |
| 1764 |
|
| 1765 |
return true; |
| 1766 |
} |
| 1767 |
|
| 1768 |
bool |
| 1769 |
rxvt_fontset::populate (const char *desc) |
| 1770 |
{ |
| 1771 |
clear (); |
| 1772 |
|
| 1773 |
fontdesc = strdup (desc); |
| 1774 |
|
| 1775 |
push_font (new_font (0, CS_UNICODE)); |
| 1776 |
realize_font (0); |
| 1777 |
|
| 1778 |
add_fonts (desc); |
| 1779 |
|
| 1780 |
return true; |
| 1781 |
} |
| 1782 |
|
| 1783 |
int |
| 1784 |
rxvt_fontset::find_font (const char *name) const |
| 1785 |
{ |
| 1786 |
for (rxvt_font *const *f = fonts.begin (); f < fonts.end (); f++) |
| 1787 |
if ((*f)->name && !strcmp ((*f)->name, name)) |
| 1788 |
return f - fonts.begin (); |
| 1789 |
|
| 1790 |
return -1; |
| 1791 |
} |
| 1792 |
|
| 1793 |
int |
| 1794 |
rxvt_fontset::find_font_idx (unicode_t unicode) |
| 1795 |
{ |
| 1796 |
// this limits fmap size. it has to accommodate COMPOSE_HI when UNICODE_3 |
| 1797 |
if (unicode > 0x1fffff) |
| 1798 |
return 0; |
| 1799 |
|
| 1800 |
unicode_t hi = unicode >> 8; |
| 1801 |
|
| 1802 |
if (hi < fmap.size ()) |
| 1803 |
if (pagemap *pm = fmap[hi]) |
| 1804 |
if ((*pm)[unicode & 0xff] != 0xff) |
| 1805 |
return (*pm)[unicode & 0xff]; |
| 1806 |
|
| 1807 |
unsigned int i; |
| 1808 |
|
| 1809 |
for (i = 0; i < fonts.size (); i++) |
| 1810 |
{ |
| 1811 |
rxvt_font *f = fonts[i]; |
| 1812 |
|
| 1813 |
if (!f->loaded) |
| 1814 |
{ |
| 1815 |
if (FROM_UNICODE (f->cs, unicode) == NOCHAR) |
| 1816 |
goto next_font; |
| 1817 |
|
| 1818 |
if (!realize_font (i)) |
| 1819 |
goto next_font; |
| 1820 |
|
| 1821 |
if (prop.ascent != rxvt_fontprop::unset) |
| 1822 |
max_it (f->ascent, prop.ascent); |
| 1823 |
} |
| 1824 |
|
| 1825 |
if (f->cs == CS_UNKNOWN) |
| 1826 |
goto next_font; |
| 1827 |
|
| 1828 |
bool careful; |
| 1829 |
if (f->has_char (unicode, &prop, careful)) |
| 1830 |
{ |
| 1831 |
i = (i << 1) | careful; |
| 1832 |
|
| 1833 |
goto found; |
| 1834 |
} |
| 1835 |
|
| 1836 |
next_font: |
| 1837 |
if (i == fonts.size () - 1) |
| 1838 |
{ |
| 1839 |
// compose characters are handled by the default font, unless another font takes over |
| 1840 |
// we do not go via the fallback list for speed reasons. |
| 1841 |
if (IS_COMPOSE (unicode)) |
| 1842 |
return 0; |
| 1843 |
|
| 1844 |
if (fallback->name) |
| 1845 |
{ |
| 1846 |
// search through the fallback list |
| 1847 |
push_font (new_font (fallback->name, fallback->cs)); |
| 1848 |
fallback++; |
| 1849 |
} |
| 1850 |
else |
| 1851 |
{ |
| 1852 |
// try to find a new font. |
| 1853 |
// only xft currently supported, as there is no |
| 1854 |
// way to configure this and xft is easier to hack in, |
| 1855 |
// while x11 has more framework in place already. |
| 1856 |
// TODO: this is a real resource hog, xft takes ages(?) |
| 1857 |
#if XFT && USE_SLOW_LOOKUP |
| 1858 |
// grab the first xft font that seems suitable |
| 1859 |
// TOOD: should go first for cellchar (spacing 110) then mono, then else |
| 1860 |
FcPattern *p = FcPatternCreate (); |
| 1861 |
|
| 1862 |
FcCharSet *s = FcCharSetCreate (); |
| 1863 |
FcCharSetAddChar (s, unicode); |
| 1864 |
FcPatternAddCharSet (p, FC_CHARSET, s); |
| 1865 |
// charsets don't help that much, as xft might return |
| 1866 |
// a non-matching font even if a better font is available :/ |
| 1867 |
|
| 1868 |
x x x x TODO prop might have unset contents |
| 1869 |
FcPatternAddInteger (p, FC_PIXEL_SIZE, prop.height); |
| 1870 |
FcPatternAddInteger (p, FC_WEIGHT, prop.weight); |
| 1871 |
FcPatternAddInteger (p, FC_SLANT, prop.slant); |
| 1872 |
FcPatternAddBool (p, FC_MINSPACE, 1); |
| 1873 |
//FcPatternAddBool (p, FC_ANTIALIAS, 1); |
| 1874 |
|
| 1875 |
XftResult result; |
| 1876 |
FcPattern *match = XftFontMatch (term->dpy, term->display->screen, p, &result); |
| 1877 |
|
| 1878 |
FcPatternDestroy (p); |
| 1879 |
|
| 1880 |
if (match) |
| 1881 |
{ |
| 1882 |
FcPatternDel (match, FC_CHARSET); |
| 1883 |
char *font = (char *)FcNameUnparse (match); |
| 1884 |
FcPatternDestroy (match); |
| 1885 |
|
| 1886 |
if (find_font (font) < 0) |
| 1887 |
{ |
| 1888 |
char fontname[4096]; |
| 1889 |
snprintf (fontname, sizeof (fontname), "xft:%s", font); |
| 1890 |
|
| 1891 |
push_font (new_font (fontname, CS_UNICODE)); |
| 1892 |
} |
| 1893 |
|
| 1894 |
free (font); |
| 1895 |
} |
| 1896 |
#endif |
| 1897 |
} |
| 1898 |
} |
| 1899 |
} |
| 1900 |
|
| 1901 |
/* we must return SOME font */ |
| 1902 |
i = 0; |
| 1903 |
|
| 1904 |
found: |
| 1905 |
// found a font, cache it |
| 1906 |
if (i < 255) |
| 1907 |
{ |
| 1908 |
while (hi >= fmap.size ()) |
| 1909 |
fmap.push_back (0); |
| 1910 |
|
| 1911 |
if (!fmap[hi]) |
| 1912 |
{ |
| 1913 |
fmap[hi] = new pagemap; |
| 1914 |
memset (fmap[hi], 0xff, sizeof (pagemap)); |
| 1915 |
} |
| 1916 |
|
| 1917 |
(*fmap[hi])[unicode & 0xff] = i; |
| 1918 |
} |
| 1919 |
|
| 1920 |
return i; |
| 1921 |
} |
| 1922 |
|
