1 files changed, 83 insertions, 0 deletions
diff --git a/main/menu.cpp b/main/menu.cpp
new file mode 100644
index 00000000..92f1b980
--- /dev/null
+++ b/main/menu.cpp
@@ -0,0 +1,83 @@
+#include "app.hpp"
+#include <Magnum/GL/Renderer.h>
+#include <Magnum/ImGuiIntegration/Integration.h>
+
+namespace floormat {
+
+template<typename F>
+struct raii_wrapper final
+{
+    raii_wrapper(F&& fn) : dtor{fn} {}
+    [[no_unique_address]] F dtor;
+    inline ~raii_wrapper() { dtor(); }
+    raii_wrapper(const raii_wrapper<F>&) = delete;
+    raii_wrapper<F>& operator=(const raii_wrapper<F>&) = delete;
+};
+
+constexpr inline const auto* imgui_name = "floormat editor";
+
+[[nodiscard]] static auto gui_begin() {
+    ImGui::Begin(imgui_name, nullptr, ImGuiWindowFlags_::ImGuiWindowFlags_NoMove);
+    return raii_wrapper{[]{ ImGui::End(); }};
+}
+[[nodiscard]] static auto begin_main_menu() {
+    ImGui::BeginMainMenuBar();
+    return raii_wrapper{[] { ImGui::EndMainMenuBar(); }};
+}
+[[nodiscard]] static auto begin_menu(const char* name, bool enabled = true) {
+    ImGui::BeginMenu(name, enabled);
+    return raii_wrapper{[] { ImGui::EndMenu(); }};
+}
+
+void app::setup_menu()
+{
+    GL::Renderer::setBlendEquation(GL::Renderer::BlendEquation::Add, GL::Renderer::BlendEquation::Add);
+    GL::Renderer::setBlendFunction(GL::Renderer::BlendFunction::SourceAlpha, GL::Renderer::BlendFunction::OneMinusSourceAlpha);
+}
+
+void app::display_menu()
+{
+    GL::Renderer::enable(GL::Renderer::Feature::Blending);
+    GL::Renderer::enable(GL::Renderer::Feature::ScissorTest);
+    GL::Renderer::disable(GL::Renderer::Feature::FaceCulling);
+    GL::Renderer::disable(GL::Renderer::Feature::DepthTest);
+    _imgui.drawFrame();
+    GL::Renderer::enable(GL::Renderer::Feature::ScissorTest);
+}
+
+void app::draw_menu()
+{
+    _imgui.newFrame();
+
+    if (ImGui::GetIO().WantTextInput && !isTextInputActive())
+        startTextInput();
+    else if (!ImGui::GetIO().WantTextInput && isTextInputActive())
+        stopTextInput();
+
+    auto b = gui_begin();
+    draw_menu_bar();
+}
+
+void app::draw_menu_bar()
+{
+    auto bm = begin_main_menu();
+    {
+        auto m = begin_menu("File");
+        ImGui::MenuItem("Open");
+        ImGui::MenuItem("Recent");
+        ImGui::Separator();
+        ImGui::MenuItem("Save");
+        ImGui::MenuItem("Save as...");
+        ImGui::Separator();
+        ImGui::MenuItem("Close");
+    }
+    {
+        auto m = begin_menu("Mode");
+        ImGui::MenuItem("Select", "F1");
+        ImGui::MenuItem("Floors", "F2");
+        ImGui::MenuItem("Walls", "F3");
+        ImGui::MenuItem("Floors", "F4");
+    }
+}
+
+} // namespace floormat