Allow fonts to work correctly on macOS

Author: ktf

DebugGUI/src/DebugGUIMacos.mm

@@ -27,15 +27,14 @@ static void default_error_callback(int error, const char *description) {
   GLFWwindow *window;
   id<MTLDevice> device;
   id<MTLCommandQueue> commandQueue;
-  MTLRenderPassDescriptor* renderPassDescriptor;
+  MTLRenderPassDescriptor *renderPassDescriptor;
 };
 
 CAMetalLayer *layer;
 GLFWwindow *window;
 
 // @return an object of kind GLFWwindow* as void* to avoid having a direct dependency
-void *initGUI(const char *name,
-              void (*error_callback)(int, char const *description)) {
+void *initGUI(const char *name, void (*error_callback)(int, char const *description)) {
   DebugGUIContext *context = nullptr;
 
   if (name) {
@@ -53,14 +52,12 @@ static void default_error_callback(int error, const char *description) {
     if (error_callback == nullptr) {
       glfwSetErrorCallback(default_error_callback);
     }
-    if (!glfwInit())
-      return nullptr;
+    if (!glfwInit()) return nullptr;
     glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
     context = (DebugGUIContext *)(malloc(sizeof(DebugGUIContext)));
     window = glfwCreateWindow(1280, 720, name, nullptr, nullptr);
 
-    if (window == NULL)
-      return 0;
+    if (window == NULL) return 0;
 
     context->window = window;
     context->device = MTLCreateSystemDefaultDevice();
@@ -69,6 +66,21 @@ static void default_error_callback(int error, const char *description) {
 
     // Setup Platform/Renderer backends
     ImGui_ImplGlfw_InitForOpenGL(context->window, true);
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see
+    // extra_fonts/README.txt for more details)
+    io.Fonts->AddFontDefault();
+    static const ImWchar icons_ranges[] = {ICON_MIN_FA, ICON_MAX_FA, 0};
+    ImFontConfig icons_config;
+    icons_config.MergeMode = true;
+    icons_config.PixelSnapH = true;
+    icons_config.FontDataOwnedByAtlas = false;
+    io.Fonts->AddFontFromMemoryTTF((void *)s_iconsFontAwesomeTtf, sizeof(s_iconsFontAwesomeTtf),
+                                   12.0f, &icons_config, icons_ranges);
+
+    if (io.Fonts->ConfigData.empty()) io.Fonts->AddFontDefault();
+    //  io.Fonts->Build();
+    io.DisplaySize = ImVec2(1280, 720);
     ImGui_ImplMetal_Init(context->device);
 
     NSWindow *nswin = glfwGetCocoaWindow(context->window);
@@ -79,7 +91,6 @@ static void default_error_callback(int error, const char *description) {
     nswin.contentView.wantsLayer = YES;
 
     context->renderPassDescriptor = [MTLRenderPassDescriptor new];
-    ImGui_ImplMetal_CreateDeviceObjects(layer.device);
   } else {
     ImGui::CreateContext();
     ImGuiIO &io = ImGui::GetIO();
@@ -103,22 +114,23 @@ static void default_error_callback(int error, const char *description) {
     io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
     io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
     io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see
+    // extra_fonts/README.txt for more details)
+    io.Fonts->AddFontDefault();
+    static const ImWchar icons_ranges[] = {ICON_MIN_FA, ICON_MAX_FA, 0};
+    ImFontConfig icons_config;
+    icons_config.MergeMode = true;
+    icons_config.PixelSnapH = true;
+    icons_config.FontDataOwnedByAtlas = false;
+    io.Fonts->AddFontFromMemoryTTF((void *)s_iconsFontAwesomeTtf, sizeof(s_iconsFontAwesomeTtf),
+                                   12.0f, &icons_config, icons_ranges);
+
+    if (io.Fonts->ConfigData.empty()) io.Fonts->AddFontDefault();
+    //  io.Fonts->Build();
+    io.DisplaySize = ImVec2(1280, 720);
   }
 
-  // Load Fonts
-  // (there is a default font, this is only if you want to change it. see
-  // extra_fonts/README.txt for more details)
-  ImGuiIO &io = ImGui::GetIO();
-  io.Fonts->AddFontDefault();
-  static const ImWchar icons_ranges[] = {ICON_MIN_FA, ICON_MAX_FA, 0};
-  ImFontConfig icons_config;
-  icons_config.MergeMode = true;
-  icons_config.PixelSnapH = true;
-  icons_config.FontDataOwnedByAtlas = false;
-  io.Fonts->AddFontFromMemoryTTF((void *)s_iconsFontAwesomeTtf,
-                                 sizeof(s_iconsFontAwesomeTtf), 12.0f,
-                                 &icons_config, icons_ranges);
-
   ImPlot::CreateContext();
   return context;
 }
@@ -134,8 +146,8 @@ bool pollGUIPreRender(void *context, float delta) {
     return true;
   }
 
-  DebugGUIContext* ctx = reinterpret_cast<DebugGUIContext*>(context);
-  NSWindow* nswin = glfwGetCocoaWindow(ctx->window);
+  DebugGUIContext *ctx = reinterpret_cast<DebugGUIContext *>(context);
+  NSWindow *nswin = glfwGetCocoaWindow(ctx->window);
   if (glfwWindowShouldClose(ctx->window)) {
     return false;
   }
@@ -148,8 +160,7 @@ bool pollGUIPreRender(void *context, float delta) {
     auto drawable = [layer nextDrawable];
 
     ctx->renderPassDescriptor.colorAttachments[0].clearColor =
-        MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2],
-                          clear_color[3]);
+        MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
     ctx->renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
     ctx->renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
     ctx->renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
@@ -172,12 +183,11 @@ void pollGUIPostRender(void *context, void *drawData) {
     auto drawable = [layer nextDrawable];
 
     id<MTLCommandBuffer> commandBuffer = [ctx->commandQueue commandBuffer];
-    id<MTLRenderCommandEncoder> renderEncoder = [commandBuffer
-        renderCommandEncoderWithDescriptor:ctx->renderPassDescriptor];
+    id<MTLRenderCommandEncoder> renderEncoder =
+        [commandBuffer renderCommandEncoderWithDescriptor:ctx->renderPassDescriptor];
     [renderEncoder pushDebugGroup:@"ImGui demo"];
 
-    ImGui_ImplMetal_RenderDrawData((ImDrawData *)drawData, commandBuffer,
-                                   renderEncoder);
+    ImGui_ImplMetal_RenderDrawData((ImDrawData *)drawData, commandBuffer, renderEncoder);
 
     [renderEncoder popDebugGroup];
     [renderEncoder endEncoding];
@@ -218,4 +228,4 @@ void disposeGUI() {
   glfwTerminate();
 }
 
-} // namespace o2::framework
+}  // namespace o2::framework