Method unloadAll

lib/EpdFont/SdCardFontManager.cpp:80–89

}

void SdCardFontManager::unloadAll(GfxRenderer& renderer) {
  renderer.clearSdCardFonts();
  for (auto& lf : loaded_) {
    renderer.removeFont(lf.fontId);
    delete lf.font;
  }
  loaded_.clear();
  loadedFamilyName_.clear();
  loadedPointSize_ = 0;
}

int SdCardFontManager::getFontId(const std::string& familyName) const {
  if (familyName != loadedFamilyName_ || loaded_.empty()) return 0;