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#include <fontconfig/fontconfig.h>
#include <functional>
#include <memory>
#include <stdexcept>
#include <string>
#include "FontFacade.h"
using namespace std;
using namespace crepe;
FontFacade::FontFacade() {
if (!FcInit()) {
throw runtime_error("Failed to initialize Fontconfig.");
}
}
FontFacade::~FontFacade() { FcFini(); }
Asset FontFacade::get_font_asset(const string & font_family) {
FcPattern * raw_pattern
= FcNameParse(reinterpret_cast<const FcChar8 *>(font_family.c_str()));
if (!raw_pattern) {
throw runtime_error("Failed to create font pattern.");
}
std::unique_ptr<FcPattern, std::function<void(FcPattern *)>> pattern(
raw_pattern, [](FcPattern * p) { FcPatternDestroy(p); });
FcConfig * config = FcConfigGetCurrent();
if (!config) {
throw runtime_error("Failed to get current Fontconfig configuration.");
}
FcResult result;
FcPattern * raw_matched_pattern = FcFontMatch(config, pattern.get(), &result);
if (!raw_matched_pattern) {
throw runtime_error("No matching font found.");
}
std::unique_ptr<FcPattern, std::function<void(FcPattern *)>> matched_pattern(
raw_matched_pattern, [](FcPattern * p) { FcPatternDestroy(p); });
FcChar8 * file_path = nullptr;
if (FcPatternGetString(matched_pattern.get(), FC_FILE, 0, &file_path) != FcResultMatch
|| !file_path) {
throw runtime_error("Failed to get font file path.");
}
string font_file_path = reinterpret_cast<const char *>(file_path);
return Asset(font_file_path);
}
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