Load GUI from XML

FontProvider.cc

@@ -0,0 +1,32 @@
+#include <mutex>
+
+#include "FontProvider.hh"
+
+template<>
+std::unique_ptr<FontProvider> Singleton<FontProvider>::instance{nullptr};
+template<>
+std::once_flag Singleton<FontProvider>::instance_flag{};
+
+FontProvider::FontProvider()
+{
+}
+
+TTF_Font *FontProvider::getFont(std::string const& name, unsigned ptsize)
+{
+  auto key = make_tuple(name, ptsize);
+  auto it = fontCache_.find(key);
+  
+  if (it == fontCache_.end()) {
+    TTFFontUPtr font{TTF_OpenFont(name.c_str(), ptsize)};
+    if (!font)
+      throw TTFException{};
+    std::tie(it, std::ignore) = fontCache_.insert(make_pair(key, std::move(font)));
+  } 
+
+  return it->second.get();
+}
+
+void FontProvider::cleanup()
+{
+  fontCache_.clear();
+}