[UI] Redesigned "Install Content" window

- Added ID for each ImGui window
- Added filesystem::CreateFolder function

src/xenia/ui/imgui_dialog.cc

@@ -16,9 +16,12 @@
 namespace xe {
 namespace ui {
 
+uint64_t ImGuiDialog::next_window_id_ = 0;
+
 ImGuiDialog::ImGuiDialog(ImGuiDrawer* imgui_drawer)
     : imgui_drawer_(imgui_drawer) {
   imgui_drawer_->AddDialog(this);
+  next_window_id_++;
 }
 
 ImGuiDialog::~ImGuiDialog() {

src/xenia/ui/imgui_dialog.h

@@ -40,6 +40,7 @@ class ImGuiDialog {
   ImGuiDrawer* imgui_drawer() const { return imgui_drawer_; }
   ImGuiIO& GetIO();
 
+  uint64_t GetWindowId() const { return next_window_id_; }
   // Closes the dialog and returns to any waiters.
   void Close();
 
@@ -48,6 +49,8 @@ class ImGuiDialog {
   virtual void OnDraw(ImGuiIO& io) {}
 
  private:
+  static uint64_t next_window_id_;
+
   ImGuiDrawer* imgui_drawer_ = nullptr;
   bool has_close_pending_ = false;
   std::vector<xe::threading::Fence*> waiting_fences_;

src/xenia/ui/imgui_drawer.cc

@@ -234,6 +234,25 @@ std::optional<ImGuiKey> ImGuiDrawer::VirtualKeyToImGuiKey(VirtualKey vkey) {
   }
 }
 
+std::unique_ptr<ImmediateTexture> ImGuiDrawer::LoadImGuiIcon(
+    std::span<const uint8_t> data) {
+  if (!immediate_drawer_) {
+    return {};
+  }
+
+  int width, height, channels;
+  unsigned char* image_data =
+      stbi_load_from_memory(data.data(), static_cast<int>(data.size()), &width,
+                            &height, &channels, STBI_rgb_alpha);
+  if (!image_data) {
+    return {};
+  }
+
+  return immediate_drawer_->CreateTexture(
+      width, height, ImmediateTextureFilter::kLinear, true,
+      reinterpret_cast<uint8_t*>(image_data));
+}
+
 std::map<uint32_t, std::unique_ptr<ImmediateTexture>> ImGuiDrawer::LoadIcons(
     IconsData data) {
   std::map<uint32_t, std::unique_ptr<ImmediateTexture>> icons_;
@@ -242,21 +261,9 @@ std::map<uint32_t, std::unique_ptr<ImmediateTexture>> ImGuiDrawer::LoadIcons(
     return icons_;
   }
 
-  int width, height, channels;
-
   for (const auto& icon : data) {
-    unsigned char* image_data = stbi_load_from_memory(
-        icon.second.data(), static_cast<int>(icon.second.size()), &width,
-        &height, &channels, STBI_rgb_alpha);
-
-    if (!image_data) {
-      continue;
-    }
-    icons_[icon.first] = (immediate_drawer_->CreateTexture(
-        width, height, ImmediateTextureFilter::kLinear, true,
-        reinterpret_cast<uint8_t*>(image_data)));
+    icons_[icon.first] = LoadImGuiIcon(icon.second);
   }
-
   return icons_;
 }
 

src/xenia/ui/imgui_drawer.h

@@ -37,6 +37,8 @@ class Window;
 
 using IconsData = std::map<uint32_t, std::span<const uint8_t>>;
 
+constexpr ImVec2 default_image_icon_size = ImVec2(75.f, 75.f);
+
 class ImGuiDrawer : public WindowInputListener, public UIDrawer {
  public:
   ImGuiDrawer(Window* window, size_t z_order);
@@ -64,6 +66,8 @@ class ImGuiDrawer : public WindowInputListener, public UIDrawer {
   void ClearDialogs();
   void EnableNotifications(bool enable) { are_notifications_enabled_ = enable; }
 
+  std::unique_ptr<ImmediateTexture> LoadImGuiIcon(
+      std::span<const uint8_t> data);
   std::map<uint32_t, std::unique_ptr<ImmediateTexture>> LoadIcons(
       IconsData data);