+/*
+ Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
+
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic 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.
+
+ DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include "dcpomatic_assert.h"
+#include "font_config.h"
+#include <fontconfig/fontconfig.h>
+#include <boost/optional.hpp>
+
+
+using std::string;
+using boost::optional;
+
+
+FontConfig* FontConfig::_instance;
+
+
+FontConfig::FontConfig()
+{
+ _config = FcInitLoadConfigAndFonts();
+ FcConfigSetCurrent(_config);
+}
+
+
+string
+FontConfig::make_font_available(boost::filesystem::path font_file)
+{
+ auto existing = _available_fonts.find(font_file);
+ if (existing != _available_fonts.end()) {
+ return existing->second;
+ }
+
+ /* Make this font available to DCP-o-matic */
+ optional<string> font_name;
+ FcConfigAppFontAddFile (_config, reinterpret_cast<FcChar8 const *>(font_file.string().c_str()));
+ auto pattern = FcPatternBuild (
+ 0, FC_FILE, FcTypeString, font_file.string().c_str(), static_cast<char *>(0)
+ );
+ auto object_set = FcObjectSetBuild (FC_FAMILY, FC_STYLE, FC_LANG, FC_FILE, static_cast<char *> (0));
+ auto font_set = FcFontList (_config, pattern, object_set);
+ if (font_set) {
+ for (int i = 0; i < font_set->nfont; ++i) {
+ FcPattern* font = font_set->fonts[i];
+ FcChar8* file;
+ FcChar8* family;
+ FcChar8* style;
+ if (
+ FcPatternGetString (font, FC_FILE, 0, &file) == FcResultMatch &&
+ FcPatternGetString (font, FC_FAMILY, 0, &family) == FcResultMatch &&
+ FcPatternGetString (font, FC_STYLE, 0, &style) == FcResultMatch
+ ) {
+ font_name = reinterpret_cast<char const *> (family);
+ }
+ }
+
+ FcFontSetDestroy (font_set);
+ }
+
+ FcObjectSetDestroy (object_set);
+ FcPatternDestroy (pattern);
+
+ DCPOMATIC_ASSERT(font_name);
+
+ _available_fonts[font_file] = *font_name;
+
+ FcConfigBuildFonts(_config);
+ return *font_name;
+}
+
+
+FontConfig *
+FontConfig::instance()
+{
+ if (!_instance) {
+ _instance = new FontConfig();
+ }
+
+ return _instance;
+}
+