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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/file.h"
#include "common/config-manager.h"
#include "common/compression/unzip.h"
#include "backends/imgui/imgui_fonts.h"
namespace {
class FontReader;
class FontArchive {
friend class FontReader;
public:
void openArchive(const char *archiveName) {
if (_archive)
delete _archive;
Common::SeekableReadStream *archiveStream = nullptr;
if (ConfMan.hasKey("extrapath")) {
Common::FSDirectory extrapath(ConfMan.getPath("extrapath"));
archiveStream = extrapath.createReadStreamForMember(archiveName);
}
if (!archiveStream) {
archiveStream = SearchMan.createReadStreamForMember(archiveName);
}
_archive = Common::makeZipArchive(archiveStream);
}
~FontArchive() {
if (_archive)
delete _archive;
}
private:
Common::Archive *_archive = nullptr;
};
class FontReader {
public:
FontReader(FontArchive &archive) : _archive(archive) {}
bool openFile(Common::File &file, const char *fileName) {
if (!_archive._archive)
return false;
return file.open(Common::Path(fileName, Common::Path::kNoSeparator), *_archive._archive);
}
private:
FontArchive &_archive;
};
} // namespace
namespace ImGui {
ImFont *addTTFFontFromArchive(const char *filename, float size_pixels, const ImFontConfig *font_cfg_template, const ImWchar *glyph_ranges) {
Common::File f;
FontArchive archive;
FontReader reader(archive);
archive.openArchive("fonts.dat");
if (!reader.openFile(f, filename)) {
archive.openArchive("fonts-cjk.dat");
if (!reader.openFile(f, filename)) {
return nullptr;
}
}
uint size = f.size();
uint8 *ttfFile = (uint8 *)ImGui::MemAlloc(size);
f.read(ttfFile, size);
ImGuiIO &io = ImGui::GetIO();
return io.Fonts->AddFontFromMemoryTTF(ttfFile, size, size_pixels, font_cfg_template, glyph_ranges);
}
} // namespace ImGui
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