font fallback?

src/resource/font.cpp

@@ -11,6 +11,14 @@ namespace anm2ed::resource
     pointer = ImGui::GetIO().Fonts->AddFontFromMemoryTTF(data, length, size, &config);
   }
 
+  Font::Font(const char* path, int size, int number)
+  {
+    ImFontConfig config;
+    config.FontDataOwnedByAtlas = false;
+    config.FontNo = number;
+    pointer = ImGui::GetIO().Fonts->AddFontFromFileTTF(path, size);
+  }
+
   void Font::append(void* data, size_t length, int size)
   {
     ImFontConfig config;
@@ -19,6 +27,15 @@ namespace anm2ed::resource
     ImGui::GetIO().Fonts->AddFontFromMemoryTTF(data, length, size, &config);
   }
 
+  bool Font::append(const char* path, int size, int number)
+  {
+    ImFontConfig config;
+    config.MergeMode = true;
+    config.FontDataOwnedByAtlas = false;
+    config.FontNo = number;
+    return ImGui::GetIO().Fonts->AddFontFromFileTTF(path, size, &config);
+  }
+
   Font::~Font()
   {
     if (get()) ImGui::GetIO().Fonts->RemoveFont(pointer);

src/resource/font.h

@@ -47321,7 +47321,9 @@ namespace anm2ed::resource
   public:
     Font();
     Font(void*, size_t, int);
+    Font(const char* path, int size, int number = 0);
     void append(void*, size_t, int);
+    bool append(const char* path, int size, int number = 0);
     ~Font();
     ImFont* get();
     Font& operator=(Font&&) noexcept;