restructure more

ThirdParty/entt/testbed/application/context.cpp

@@ -0,0 +1,55 @@
+#include <SDL3/SDL_render.h>
+#include <application/context.h>
+#include <backends/imgui_impl_sdl3.h>
+#include <backends/imgui_impl_sdlrenderer3.h>
+#include <imgui.h>
+
+namespace testbed {
+
+context::context()
+    : sdl_window{SDL_CreateWindow("testbed", 1280, 720, SDL_WINDOW_HIGH_PIXEL_DENSITY)},
+      sdl_renderer{SDL_CreateRenderer(sdl_window, nullptr)} {
+    SDL_SetRenderVSync(sdl_renderer, SDL_RENDERER_VSYNC_ADAPTIVE);
+
+    SDL_SetWindowResizable(sdl_window, true);
+    SDL_SetWindowPosition(sdl_window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
+
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+
+    ImGuiIO &io = ImGui::GetIO();
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
+
+    ImGui::StyleColorsDark();
+
+    ImGui_ImplSDL3_InitForSDLRenderer(sdl_window, sdl_renderer);
+    ImGui_ImplSDLRenderer3_Init(sdl_renderer);
+}
+
+context ::~context() {
+    ImGui_ImplSDLRenderer3_Shutdown();
+    ImGui_ImplSDL3_Shutdown();
+    ImGui::DestroyContext();
+
+    SDL_DestroyRenderer(sdl_renderer);
+    SDL_DestroyWindow(sdl_window);
+}
+
+SDL_Window *context::window() const noexcept {
+    return *this;
+}
+
+SDL_Renderer *context::renderer() const noexcept {
+    return *this;
+}
+
+context::operator SDL_Window *() const noexcept {
+    return sdl_window;
+}
+
+context::operator SDL_Renderer *() const noexcept {
+    return sdl_renderer;
+}
+
+} // namespace testbed