testbed: context class

testbed/CMakeLists.txt

@@ -31,24 +31,23 @@ endif()
 
 # Testbed executable
 
-set(ENTT_TESTBED_EXECUTABLE testbed)
+add_executable(testbed)
 
-add_executable(${ENTT_TESTBED_EXECUTABLE})
-
-set_target_properties(${ENTT_TESTBED_EXECUTABLE} PROPERTIES CXX_EXTENSIONS OFF)
-target_compile_features(${ENTT_TESTBED_EXECUTABLE} PUBLIC ${ENTT_CXX_STD})
+set_target_properties(testbed PROPERTIES CXX_EXTENSIONS OFF)
+target_compile_features(testbed PUBLIC ${ENTT_CXX_STD})
 
 target_compile_definitions(
-    ${ENTT_TESTBED_EXECUTABLE}
+    testbed
     PRIVATE
         ENTT_ID_TYPE=${ENTT_ID_TYPE}
         NOMINMAX
 )
 
 target_sources(
-	${ENTT_TESTBED_EXECUTABLE}
+	testbed
 	PRIVATE
 		testbed.cpp
+        app/context.cpp
         ${imgui_SOURCE_DIR}/imgui.cpp
         ${imgui_SOURCE_DIR}/imgui_demo.cpp
         ${imgui_SOURCE_DIR}/imgui_draw.cpp
@@ -59,15 +58,15 @@ target_sources(
 )
 
 target_link_libraries(
-    ${ENTT_TESTBED_EXECUTABLE}
+    testbed
     PRIVATE
         EnTT::EnTT
         SDL3::SDL3
 )
 
 target_include_directories(
-    ${ENTT_TESTBED_EXECUTABLE}
+    testbed
     PRIVATE
-        ${testbed_SOURCE_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}
         ${imgui_SOURCE_DIR}
 )

testbed/app/context.cpp

@@ -0,0 +1,63 @@
+#include <SDL3/SDL_render.h>
+#include <app/context.h>
+#include <backends/imgui_impl_sdl3.h>
+#include <backends/imgui_impl_sdlrenderer3.h>
+#include <imgui.h>
+
+namespace testbed {
+
+namespace internal {
+
+static constexpr const char *window_default_title = "testbed";
+static constexpr int window_default_width = 1280;
+static constexpr int window_default_height = 720;
+
+} // namespace internal
+
+context::context()
+    : sdl_window{SDL_CreateWindow(internal::window_default_title, internal::window_default_width, internal::window_default_height, 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

testbed/app/context.h

@@ -0,0 +1,29 @@
+#pragma once
+
+struct SDL_Renderer;
+struct SDL_Window;
+
+namespace testbed {
+
+struct context {
+    context();
+    ~context();
+
+    context(const context &) = delete;
+    context(context &&) = delete;
+
+    context &operator=(const context &) = delete;
+    context &operator=(context &&) = delete;
+
+    SDL_Window *window() const noexcept;
+    SDL_Renderer *renderer() const noexcept;
+
+    operator SDL_Window *() const noexcept;
+    operator SDL_Renderer *() const noexcept;
+
+private:
+    SDL_Window *sdl_window;
+    SDL_Renderer *sdl_renderer;
+};
+
+} // namespace testbed

testbed/testbed.cpp

@@ -1,6 +1,6 @@
-#include <entt/entt.hpp>
+#include <app/context.h>
 
 int main() {
-    [[maybe_unused]] entt::registry registry;
+    testbed::context ctx{};
     return 0;
 }