FullscreenUI: Draw quick menu at screen bounds, not scaled bounds

src/duckstation-nogui/nogui_host_interface.cpp

@@ -86,13 +86,6 @@ bool NoGUIHostInterface::CreateDisplay()
     return false;
   }
 
-  // imgui init from window
-  ImGui::GetIO().DisplayFramebufferScale.x = wi->surface_scale;
-  ImGui::GetIO().DisplayFramebufferScale.y = wi->surface_scale;
-  ImGui::GetStyle() = ImGuiStyle();
-  ImGui::GetStyle().ScaleAllSizes(wi->surface_scale);
-  ImGui::StyleColorsDarker();
-
   Assert(!m_display);
   switch (g_settings.gpu_renderer)
   {

src/frontend-common/fullscreen_ui.cpp

@@ -1992,7 +1992,8 @@ void DrawSettingsWindow()
 void DrawQuickMenu(MainWindowType type)
 {
   ImDrawList* dl = ImGui::GetBackgroundDrawList();
-  dl->AddRectFilled(ImVec2(0.0f, 0.0f), ImGui::GetIO().DisplaySize, IM_COL32(0x21, 0x21, 0x21, 200));
+  const ImVec2 display_size(ImGui::GetIO().DisplaySize);
+  dl->AddRectFilled(ImVec2(0.0f, 0.0f), display_size, IM_COL32(0x21, 0x21, 0x21, 200));
 
   // title info
   {
@@ -2009,21 +2010,23 @@ void DrawQuickMenu(MainWindowType type)
     const ImVec2 subtitle_size(
       g_medium_font->CalcTextSizeA(g_medium_font->FontSize, std::numeric_limits<float>::max(), -1.0f, subtitle));
 
-    const ImVec2 title_pos(LayoutScale(LAYOUT_SCREEN_WIDTH - 20.0f - 50.0f - 20.0f) - title_size.x,
-                           LayoutScale(LAYOUT_SCREEN_HEIGHT - 20.0f - 50.0f));
-    const ImVec2 subtitle_pos(LayoutScale(LAYOUT_SCREEN_WIDTH - 20.0f - 50.0f - 20.0f) - subtitle_size.x,
+    const ImVec2 title_pos(display_size.x - LayoutScale(20.0f + 50.0f + 20.0f) - title_size.x,
+                           display_size.y - LayoutScale(20.0f + 50.0f));
+    const ImVec2 subtitle_pos(display_size.x - LayoutScale(20.0f + 50.0f + 20.0f) - subtitle_size.x,
                               title_pos.y + g_large_font->FontSize + LayoutScale(4.0f));
 
     dl->AddText(g_large_font, g_large_font->FontSize, title_pos, IM_COL32(255, 255, 255, 255), title.c_str());
     dl->AddText(g_medium_font, g_medium_font->FontSize, subtitle_pos, IM_COL32(255, 255, 255, 255), subtitle);
 
-    const ImVec2 image_min(LayoutScale(LAYOUT_SCREEN_WIDTH - 20.0f - 50.0f, LAYOUT_SCREEN_HEIGHT - 20.0f - 50.0f));
+    const ImVec2 image_min(display_size - LayoutScale(20.0f + 50.0f, 20.0f + 50.0f));
     const ImVec2 image_max(image_min + LayoutScale(50.0f, 50.0f));
     dl->AddImage(GetCoverForCurrentGame()->GetHandle(), image_min, image_max);
   }
 
-  if (BeginFullscreenWindow(0.0f, 0.0f, 500.0f, LAYOUT_SCREEN_HEIGHT, "pause_menu", ImVec4(0.0f, 0.0f, 0.0f, 0.0f),
-                            0.0f, 10.0f, ImGuiWindowFlags_NoBackground))
+  const ImVec2 window_size(LayoutScale(500.0f, LAYOUT_SCREEN_HEIGHT));
+  const ImVec2 window_pos(0.0f, display_size.y - window_size.y);
+  if (BeginFullscreenWindow(window_pos, window_size, "pause_menu", ImVec4(0.0f, 0.0f, 0.0f, 0.0f), 0.0f, 10.0f,
+                            ImGuiWindowFlags_NoBackground))
   {
     BeginMenuButtons(11, 1.0f, ImGuiFullscreen::LAYOUT_MENU_BUTTON_X_PADDING,
                      ImGuiFullscreen::LAYOUT_MENU_BUTTON_Y_PADDING,

src/frontend-common/imgui_fullscreen.cpp

@@ -291,8 +291,17 @@ bool BeginFullscreenWindow(float left, float top, float width, float height, con
   if (top < 0.0f)
     top = (LAYOUT_SCREEN_HEIGHT - height) * -top;
 
-  ImGui::SetNextWindowSize(LayoutScale(ImVec2(width, height)));
-  ImGui::SetNextWindowPos(ImVec2(LayoutScale(left) + g_layout_padding_left, LayoutScale(top) + g_layout_padding_top));
+  const ImVec2 pos(ImVec2(LayoutScale(left) + g_layout_padding_left, LayoutScale(top) + g_layout_padding_top));
+  const ImVec2 size(LayoutScale(ImVec2(width, height)));
+  return BeginFullscreenWindow(pos, size, name, background, rounding, padding, flags);
+}
+
+bool BeginFullscreenWindow(const ImVec2& position, const ImVec2& size, const char* name,
+                           const ImVec4& background /* = HEX_TO_IMVEC4(0x212121, 0xFF) */, float rounding /*= 0.0f*/,
+                           float padding /*= 0.0f*/, ImGuiWindowFlags flags /*= 0*/)
+{
+  ImGui::SetNextWindowPos(position);
+  ImGui::SetNextWindowSize(size);
 
   ImGui::PushStyleColor(ImGuiCol_WindowBg, background);
   ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, LayoutScale(padding, padding));

src/frontend-common/imgui_fullscreen.h

@@ -10,7 +10,7 @@ namespace ImGuiFullscreen {
   ImVec4(static_cast<float>((hex >> 16) & 0xFFu) / 255.0f, static_cast<float>((hex >> 8) & 0xFFu) / 255.0f,            \
          static_cast<float>(hex & 0xFFu) / 255.0f, static_cast<float>(alpha) / 255.0f)
 
-using ResolveTextureHandleCallback = ImTextureID(*)(const std::string& path);
+using ResolveTextureHandleCallback = ImTextureID (*)(const std::string& path);
 
 static constexpr float LAYOUT_SCREEN_WIDTH = 1280.0f;
 static constexpr float LAYOUT_SCREEN_HEIGHT = 720.0f;
@@ -71,6 +71,11 @@ static ALWAYS_INLINE ImVec2 LayoutScale(float x, float y)
   return ImVec2(x * g_layout_scale, y * g_layout_scale);
 }
 
+static ALWAYS_INLINE ImVec2 LayoutScaleAndOffset(float x, float y)
+{
+  return ImVec2(g_layout_padding_left + x * g_layout_scale, g_layout_padding_top + y * g_layout_scale);
+}
+
 static ALWAYS_INLINE ImVec4 UIPrimaryColor()
 {
   return HEX_TO_IMVEC4(0x212121, 0xff);
@@ -161,6 +166,9 @@ void EndFullscreenColumnWindow();
 bool BeginFullscreenWindow(float left, float top, float width, float height, const char* name,
                            const ImVec4& background = HEX_TO_IMVEC4(0x212121, 0xFF), float rounding = 0.0f,
                            float padding = 0.0f, ImGuiWindowFlags flags = 0);
+bool BeginFullscreenWindow(const ImVec2& position, const ImVec2& size, const char* name,
+                           const ImVec4& background = HEX_TO_IMVEC4(0x212121, 0xFF), float rounding = 0.0f,
+                           float padding = 0.0f, ImGuiWindowFlags flags = 0);
 void EndFullscreenWindow();
 
 void BeginMenuButtons(u32 num_items = 0, float y_align = 0.0f, float x_padding = LAYOUT_MENU_BUTTON_X_PADDING,