windows font family loader

src/app/core/platform/font_loader.cc

@@ -1,9 +1,13 @@
 #include "app/core/platform/font_loader.h"
 
+#include <imgui/imgui.h>
+
 #include <string>
+#include <unordered_set>
 #include <vector>
 
-#include "imgui/imgui.h"
+#include "absl/strings/str_format.h"
+#include "app/gui/icons.h"
 
 #ifdef _WIN32
 #include <Windows.h>
@@ -52,7 +56,9 @@ void LoadSystemFonts() {
                        valueData, &valueDataSize) == ERROR_SUCCESS) {
         if (valueType == REG_SZ) {
           // Add the font file path to the vector
-          std::string fontPath((char*)valueData);
+          std::string fontPath(reinterpret_cast<char*>(valueData),
+                               valueDataSize);
+
           fontPaths.push_back(fontPath);
         }
       }
@@ -66,8 +72,55 @@ void LoadSystemFonts() {
 
   ImGuiIO& io = ImGui::GetIO();
 
-  for (const auto& fontPath : fontPaths) {
-    io.Fonts->AddFontFromFileTTF(fontPath.c_str(), 16.0f);
+  // List of common font face names
+  static const std::unordered_set<std::string> commonFontFaceNames = {
+      "arial",
+      "times",
+      "cour",
+      "verdana",
+      "tahoma",
+      "comic",
+      "Impact",
+      "ariblk",
+      "Trebuchet MS",
+      "Georgia",
+      "Palatino Linotype",
+      "Lucida Sans Unicode",
+      "Tahoma",
+      "Lucida Console"};
+
+  for (auto& fontPath : fontPaths) {
+    // Check if the font path has a "C:\" prefix
+    if (fontPath.substr(0, 2) != "C:") {
+      // Add "C:\Windows\Fonts\" prefix to the font path
+      fontPath = absl::StrFormat("C:\\Windows\\Fonts\\%s", fontPath.c_str());
+    }
+
+    // Check if the font file has a .ttf or .TTF extension
+    std::string extension = fontPath.substr(fontPath.find_last_of(".") + 1);
+    if (extension == "ttf" || extension == "TTF") {
+      // Get the font face name from the font path
+      std::string fontFaceName =
+          fontPath.substr(fontPath.find_last_of("\\/") + 1);
+      fontFaceName = fontFaceName.substr(0, fontFaceName.find_last_of("."));
+
+      // Check if the font face name is in the common font face names list
+      if (commonFontFaceNames.find(fontFaceName) != commonFontFaceNames.end()) {
+        io.Fonts->AddFontFromFileTTF(fontPath.c_str(), 16.0f);
+
+        // Merge icon set
+        // Icon configuration
+        static const ImWchar icons_ranges[] = {ICON_MIN_MD, 0xf900, 0};
+        ImFontConfig icons_config;
+        static const float ICON_FONT_SIZE = 18.0f;
+        icons_config.MergeMode = true;
+        icons_config.GlyphOffset.y = 5.0f;
+        icons_config.GlyphMinAdvanceX = 13.0f;
+        icons_config.PixelSnapH = true;
+        io.Fonts->AddFontFromFileTTF(FONT_ICON_FILE_NAME_MD, ICON_FONT_SIZE,
+                                     &icons_config, icons_ranges);
+      }
+    }
   }
 }