16 class FontManager final {

17 friend class ResourceManager;

18 public:

19 FontManager(const FontManager&) = delete;

20 FontManager& operator=(const FontManager&) = delete;

21 FontManager(FontManager&&) = default;

22 FontManager& operator=(FontManager&&) = default;

23 ~FontManager() { clearFont(); }

24

25 private:

26 FontManager() = default;

27

28 struct TTF_FontDeleter {

29 void operator()(TTF_Font* font) const {

30 if (font) TTF_CloseFont(font);

31 }

32 };

33

34 struct FontKey {

35 std::string path;

36 float size;

37 bool operator==(const FontKey& o) const { return path == o.path && size == o.size; }

38 };

39 struct FontKeyHash {

40 std::size_t operator()(const FontKey& k) const {

41 return std::hash<std::string>{}(k.path) ^ std::hash<float>{}(k.size);

42 }

43 };

44

45 TTF_Font* loadFont(const std::string& filePath, float fontSize);

46 TTF_Font* getFont(const std::string& filePath, float fontSize);

47 void unloadFont(const std::string& filePath, float fontSize);

48 void clearFont();

49

50 std::unordered_map<FontKey, std::unique_ptr<TTF_Font, TTF_FontDeleter>, FontKeyHash> m_fonts;

51 };