More config options, menu bar and global getter for QuickApp.

private/raid/application.cpp

@@ -20,6 +20,7 @@ namespace
 {
 constexpr int GL_COLOR_BUFFER_BIT = 0x00004000;
 const char* IMGUI_GLSL_VERSION = "#version 130";
+QuickApp* gAppInstance = nullptr;
 }
 
 int Application::run(int argc, char** argv)
@@ -93,7 +94,7 @@ int Application::run(int argc, char** argv)
         ImGui::SetNextWindowPos({0, 0});
         ImGui::SetNextWindowSize(imguiIO.DisplaySize);
 
-        ImGui::Begin("##main", nullptr, ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoDecoration);
+        ImGui::Begin("##main", nullptr, mMainWindowFlags);
         render();
         ImGui::End();
 
@@ -304,22 +305,31 @@ void Application::saveImGuiConfig()
 void QuickApp::init(QuickAppOptions options)
 {
     MIJIN_ASSERT_FATAL(options.callbacks.render, "Missing render callback.");
-    mOptions = std::move(options);
+    mRenderCallback = std::move(options.callbacks.render);
+    mFolderName = std::move(options.folderName);
+    setMainWindowFlags(options.mainWindowFlags);
+}
+
+QuickApp& QuickApp::get()
+{
+    MIJIN_ASSERT_FATAL(gAppInstance != nullptr, "No QuickApp is running.");
+    return *gAppInstance;
 }
 
 void QuickApp::render()
 {
-    mOptions.callbacks.render();
+    mRenderCallback();
 }
 
 std::string QuickApp::getFolderName()
 {
-    return mOptions.folderName;
+    return mFolderName;
 }
 
 int runQuick(int argc, char* argv[], QuickAppOptions options)
 {
     QuickApp app;
+    gAppInstance = &app;
     app.init(std::move(options));
     return app.run(argc, argv);
 }