forked from mia/Aegisub
123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
// Copyright (c) 2012, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include "font_file_lister.h"
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#include <libaegisub/charset_conv_win.h>
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#include <libaegisub/log.h>
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#include <boost/algorithm/string/case_conv.hpp>
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#include <boost/filesystem/path.hpp>
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#include <fontconfig/fontconfig.h>
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#include <wx/intl.h>
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namespace {
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bool pattern_matches(FcPattern *pat, const char *field, std::string const& name) {
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FcChar8 *str;
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for (int i = 0; FcPatternGetString(pat, field, i, &str) == FcResultMatch; ++i) {
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std::string sstr((char *)str);
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boost::to_lower(sstr);
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if (sstr == name)
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return true;
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}
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return false;
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}
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void find_font(FcFontSet *src, FcFontSet *dst, std::string const& family) {
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if (!src) return;
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for (FcPattern *pat : boost::make_iterator_range(&src->fonts[0], &src->fonts[src->nfont])) {
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int val;
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if (FcPatternGetBool(pat, FC_OUTLINE, 0, &val) != FcResultMatch || val != FcTrue) continue;
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if (pattern_matches(pat, FC_FULLNAME, family) || pattern_matches(pat, FC_FAMILY, family))
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FcFontSetAdd(dst, FcPatternDuplicate(pat));
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}
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}
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}
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FontConfigFontFileLister::FontConfigFontFileLister(FontCollectorStatusCallback &cb)
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: config(FcInitLoadConfig(), FcConfigDestroy)
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{
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cb(_("Updating font cache\n"), 0);
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FcConfigBuildFonts(config);
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}
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CollectionResult FontConfigFontFileLister::GetFontPaths(std::string const& facename, int bold, bool italic, std::vector<int> const& characters) {
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CollectionResult ret;
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std::string family = facename[0] == '@' ? facename.substr(1) : facename;
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boost::to_lower(family);
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int weight = bold == 0 ? 400 :
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bold == 1 ? 700 :
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bold;
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int slant = italic ? 110 : 0;
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// Create a fontconfig pattern to match the desired weight/slant
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agi::scoped_holder<FcPattern*> pat(FcPatternCreate(), FcPatternDestroy);
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if (!pat) return ret;
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FcPatternAddBool(pat, FC_OUTLINE, true);
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FcPatternAddInteger(pat, FC_SLANT, slant);
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FcPatternAddInteger(pat, FC_WEIGHT, FcWeightFromOpenType(weight));
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FcDefaultSubstitute(pat);
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if (!FcConfigSubstitute(config, pat, FcMatchPattern)) return ret;
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// Create a font set with only correctly named fonts
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// This is needed because the patterns returned by font matching only
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// include the first family and fullname, so we can't always verify that
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// we got the actual font we were asking for after the fact
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agi::scoped_holder<FcFontSet*> fset(FcFontSetCreate(), FcFontSetDestroy);
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find_font(FcConfigGetFonts(config, FcSetApplication), fset, family);
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find_font(FcConfigGetFonts(config, FcSetSystem), fset, family);
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// Get the best match from fontconfig
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FcResult result;
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FcFontSet *sets[] = { (FcFontSet*)fset };
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agi::scoped_holder<FcFontSet*> matches(FcFontSetSort(config, sets, 1, pat, false, nullptr, &result), FcFontSetDestroy);
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if (matches->nfont == 0)
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return ret;
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auto match = matches->fonts[0];
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FcChar8 *file;
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if(FcPatternGetString(match, FC_FILE, 0, &file) != FcResultMatch)
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return ret;
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FcCharSet *charset;
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if (FcPatternGetCharSet(match, FC_CHARSET, 0, &charset) == FcResultMatch) {
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for (int chr : characters) {
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if (!FcCharSetHasChar(charset, chr))
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ret.missing += chr;
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}
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}
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int actual_weight = 0;
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if (FcPatternGetInteger(match, FC_WEIGHT, 0, &actual_weight) == FcResultMatch)
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ret.fake_bold = weight > FcWeightToOpenType(actual_weight) + 150;
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int actual_slant = slant;
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if (FcPatternGetInteger(match, FC_SLANT, 0, &actual_slant) == FcResultMatch)
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ret.fake_italic = italic && !actual_slant;
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ret.paths.emplace_back((const char *)file);
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return ret;
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}
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