flake parts

src/modules/ImguiModule/ImguiModule.cpp

@@ -0,0 +1,116 @@
+#include "ImguiModule.h"
+
+#include "pch.hpp"
+
+ImguiModule::ImguiModule(Archimedes::App* a, void* h = nullptr) : Archimedes::Module(a, h) {
+
+    name = "ImguiModule";
+
+    WindowModule* wm = new WindowModule(a, h);
+    deps[*wm] = wm;
+}
+
+ImguiModule::~ImguiModule() {
+
+    if(app) {
+        WindowModule* wm; { wm = (WindowModule*) moduleInstances[WindowModule()]; }
+
+#ifdef WINDOW_SDL3
+        wm->removeEventFn(ecmd_it);
+#endif
+
+        rendererShutdown();
+        windowShutdown();
+        ImGui::DestroyContext();
+        
+        wm->releaseWindow(window);
+    }
+}
+
+void ImguiModule::onLoad() {
+
+    WindowModule* wm; { wm = (WindowModule*) moduleInstances[WindowModule()]; }
+    
+    if(!wm) {
+        std::cout << "No WindowModule for ImguiModule!\n";
+        std::abort();
+    }
+
+    window = (Archimedes::WindowGLFW*) wm->aquireWindow();
+
+#ifdef RENDERER_SDL3
+    renderer = window->getRenderer()->getRendererImpl()->renderer;
+#endif
+    
+    IMGUI_CHECKVERSION();
+    context = ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;         // Enable Docking
+    io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;       // Enable Multi-Viewport / Platform Windows
+    
+#ifdef CUSTOMFONT
+    io.Fonts->AddFontFromFileTTF(STRINGIZE_VALUE_OF(CUSTOMFONT), 13.0f);
+#endif
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    io.ConfigDpiScaleFonts = true;          // [Experimental] Automatically overwrite style.FontScaleDpi in Begin() when Monitor DPI changes. This will scale fonts but _NOT_ scale sizes/padding for now.
+    io.ConfigDpiScaleViewports = true;      // [Experimental] Scale Dear ImGui and Platform Windows when Monitor DPI changes.
+
+    // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
+    if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+    {
+        style.WindowRounding = 0.0f;
+        style.Colors[ImGuiCol_WindowBg].w = 1.0f;
+    }
+
+    // Setup Platform/Renderer backends
+    if(!windowInit())
+        std::cout << "windowInit failed\n";
+    
+    if(!rendererInit()) {
+        std::cout << "rendererInit failed!\n" << std::endl;
+    }
+
+#ifdef WINDOW_SDL3
+    ecmd_it = wm->addEventFn([](Archimedes::Event* e){
+        if(e->userData.type() == typeid(SDL_Event*)) {
+            ImGui_ImplSDL3_ProcessEvent(std::any_cast<SDL_Event*>(e->userData));
+        }
+    });
+#endif
+
+    //Compute first frame ahead of first WindowModule->run()
+    rendererNewFrame();
+    windowNewFrame();
+    ImGui::NewFrame();
+}
+
+void ImguiModule::run() {
+
+    ImGui::Render();
+
+    rendererRenderDrawData();
+
+    if(ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+        ImGui::UpdatePlatformWindows();
+        ImGui::RenderPlatformWindowsDefault();
+
+        window->getWindowImpl()->restoreContext();
+    }
+
+    rendererNewFrame();
+    windowNewFrame();
+    ImGui::NewFrame();
+};
+
+bool ImguiModule::onEvent(const Archimedes::Event &e) {
+
+    return false;
+}

src/modules/ImguiModule/ImguiModule.h

@@ -0,0 +1,120 @@
+
+#include "Archimedes.h"
+
+#include "imgui.h"
+#include "misc/cpp/imgui_stdlib.h"
+
+#include "modules/WindowModule/WindowModule.h"
+
+#ifdef RENDERER_OPENGL
+
+#include "backends/imgui_impl_opengl3.h"
+
+#endif
+#ifdef RENDERER_SDL3
+
+#include "backends/imgui_impl_sdlrenderer3.h"
+
+#endif
+
+#ifdef WINDOW_GLFW
+
+#include "backends/imgui_impl_glfw.h"
+#include <GLFW/glfw3.h>
+
+#endif
+#ifdef WINDOW_SDL3
+
+#include "backends/imgui_impl_sdl3.h"
+#include <SDL3/SDL.h>
+
+#endif
+
+class ImguiModule : public Archimedes::Module {
+
+    public:
+        ImguiModule(Archimedes::App*, void*);
+
+        ImguiModule() { name = "ImguiModule"; }
+
+        ~ImguiModule();
+
+        void onLoad() override;
+        
+        void run() override;
+
+        bool onEvent(const Archimedes::Event&) override;
+
+        ImGuiContext* aquireContext() {
+            contextRefs++;
+            return context; 
+        }
+
+        void releaseContext(ImGuiContext* ctxt) {
+            if(ctxt == context && context != nullptr) {
+                if(--contextRefs == 0) {
+                    app->emitEvent(new Archimedes::DoUnloadModuleEvent(name));
+                }
+            }
+        }
+
+    private:
+
+        int contextRefs = 0;
+        
+        ImGuiContext* context;
+
+        Archimedes::WindowGLFW* window;
+
+        std::list<std::function<void()>>::iterator rcmd_it;
+        
+        std::list<std::function<void(Archimedes::Event*)>>::iterator ecmd_it;
+
+#ifdef RENDERER_OPENGL
+        auto rendererInit() { return ImGui_ImplOpenGL3_Init("#version 330"); }
+        void rendererShutdown() { ImGui_ImplOpenGL3_Shutdown(); }
+
+        void rendererNewFrame() { ImGui_ImplOpenGL3_NewFrame(); }
+        void rendererRenderDrawData() { ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData()); }
+#endif
+#ifdef RENDERER_SDL3
+        SDL_Renderer* renderer;
+        auto rendererInit() { return ImGui_ImplSDLRenderer3_Init(renderer); }
+        void rendererShutdown() { ImGui_ImplSDLRenderer3_Shutdown(); }
+
+        void rendererNewFrame() { ImGui_ImplSDLRenderer3_NewFrame(); }
+        void rendererRenderDrawData() { ImGui_ImplSDLRenderer3_RenderDrawData(ImGui::GetDrawData(), renderer); }
+#endif
+
+#ifdef WINDOW_GLFW
+#ifdef RENDERER_OPENGL
+        auto windowInit() { return ImGui_ImplGlfw_InitForOpenGL(window->getWindowImpl()->getWindow(), true); }
+#endif
+
+        void windowShutdown() { ImGui_ImplGlfw_Shutdown(); }
+
+        void windowNewFrame() { ImGui_ImplGlfw_NewFrame(); }
+
+#endif
+
+#ifdef WINDOW_SDL3
+#ifdef RENDERER_OPENGL
+        auto windowInit() { return ImGui_ImplSDL3_InitForOpenGL(window->getWindowImpl()->getWindow(), window->getWindowImpl()->getContext()); }
+#endif
+#ifdef RENDERER_SDL3
+        auto windowInit() { return ImGui_ImplSDL3_InitForSDLRenderer(window->getWindowImpl()->getWindow(), renderer); }
+#endif
+
+        void windowShutdown() { ImGui_ImplSDL3_Shutdown(); }
+
+        void windowNewFrame() { ImGui_ImplSDL3_NewFrame(); }
+
+#endif
+};
+
+#ifdef IMGUIMODULE_DYNAMIC
+typedef ImguiModule mtype;
+#include "endModule.h"
+#endif
+
+