Begin Repo

layers/overlay.cpp

@@ -0,0 +1,271 @@
+#include "overlay.h"
+#include "application.h"
+
+static void check_vk_result(VkResult err)
+{
+    if (err == 0)
+        return;
+    fprintf(stderr, "[vulkan] Error: VkResult = %d\n", err);
+    if (err < 0)
+        abort();
+}
+
+Overlay::Overlay() {
+
+}
+
+Overlay::~Overlay() {
+    
+
+}
+
+void Overlay::onAttach() {
+
+    init();
+}
+
+void Overlay::onDetach() {
+
+
+}
+
+void Overlay::onUpdate() {
+
+    newFrame();
+
+    define(nullptr, [](Overlay& overlay, void** data) {
+
+        if(App::Get().show)
+            ImGui::ShowDemoWindow();
+
+        {
+            static char filename[24] = "test.py";
+            static std::vector<char> text(2048);
+            static std::fstream file;
+
+            
+
+            ImGui::Begin("Main Editor");
+
+            ImGui::InputText("File Name", filename, 24);
+
+            ImGui::SameLine();
+
+            if(ImGui::Button("load", ImVec2(48, 16))) {
+                file.open(filename, std::ios::in);
+                if(file.is_open()) {
+                    for(int i = 0; i < text.size(); i++) {
+                        if(!file.eof())
+                            text.at(i) = file.get();    
+                        else
+                            text.at(i) = '\r';
+                    }
+                    file.close();
+                } else {
+                    std::cout << "file does not exist!\n";
+                }
+            }
+
+            ImGui::InputTextMultiline("Editor", text.data(), text.size(), 
+                                        ImVec2(-FLT_MIN, ImGui::GetTextLineHeight() * 16), 
+                                        ImGuiInputTextFlags_AllowTabInput);
+
+            if(ImGui::Button("save", ImVec2(48, 16))) {
+                file.open(filename, std::ios::out | std::ios::trunc);
+                if(file.is_open()){
+                    for(char c : text)
+                        file.put(c == '\0' ? ' ' : c);
+                    file.close();
+                } else {
+                    std::cout << "file could not be opened!\n";
+                }
+            }
+
+            ImGui::SameLine();
+
+            if(ImGui::Button("run", ImVec2(48, 16))) {
+                if (system(("python " + std::string(filename)).c_str()))
+                    std::cout << "command failed!\n";
+            }
+            ImGui::End();
+        }
+
+        return 0;
+    });
+
+    render();
+}
+
+bool Overlay::onEvent(const Event* event) {
+
+    EventHandler eh;
+    return eh.handleEvent(event, this);
+}
+
+bool Overlay::onMouseButtonPressed(const MouseButtonEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureMouse)
+        io.AddMouseButtonEvent(event->getButton(), event->getPressed());
+    return io.WantCaptureMouse;
+}
+
+bool Overlay::onMouseButtonReleased(const MouseButtonEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureMouse)
+        io.AddMouseButtonEvent(event->getButton(), event->getPressed());
+    return io.WantCaptureMouse;
+}
+
+bool Overlay::onMouseMoved(const MouseMovedEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureMouse)
+        io.AddMousePosEvent(event->getX(), event->getY());
+    return io.WantCaptureMouse;
+}
+
+bool Overlay::onMouseScrolled(const MouseScrolledEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureMouse)
+        io.AddMouseWheelEvent(event->getX(), event->getY());
+    return io.WantCaptureMouse;
+}
+
+bool Overlay::onKeyPressed(const KeyEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureKeyboard) {
+        ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->getMod());
+        io.AddKeyEvent(ImGui_ImplSDL2_KeyEventToImGuiKey(event->getKey(), (SDL_Scancode)event->getScancode()), 
+                        event->getPressed());
+    }
+    return io.WantCaptureKeyboard;
+}
+
+bool Overlay::onKeyReleased(const KeyEvent* event) {
+
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureKeyboard) {
+        ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->getMod());
+        io.AddKeyEvent(ImGui_ImplSDL2_KeyEventToImGuiKey(event->getKey(), (SDL_Scancode)event->getScancode()), 
+                        event->getPressed());
+    }
+    return io.WantCaptureKeyboard;
+}
+
+bool Overlay::onKeyTyped(const KeyTypedEvent *e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if(io.WantCaptureKeyboard)
+        io.AddInputCharactersUTF8(e->getText());
+    return io.WantCaptureKeyboard;
+}
+
+bool Overlay::onWindowClose(const WindowEvent *e)
+{
+    return false;
+}
+
+bool Overlay::onWindowFocus(const WindowEvent *e)
+{
+    return false;
+}
+
+bool Overlay::onWindowFocusLost(const WindowEvent *e)
+{
+    return false;
+}
+
+bool Overlay::onWindowMoved(const WindowEvent *e)
+{
+    return false;
+}
+
+bool Overlay::onWindowResize(const WindowEvent *e)
+{
+    Window& window = App::Get().getWindow();
+    window.getSize();
+    ImGui::GetIO().DisplaySize = ImVec2(window.x, window.y);
+    return false;
+}
+
+void Overlay::init() {
+
+    App& app = App::Get();
+    Renderer& renderer = app.getRenderer();
+
+    IMGUI_CHECKVERSION();
+    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
+
+    ImGui::StyleColorsDark();
+
+    ImGuiStyle& style = ImGui::GetStyle();
+
+    if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+    {
+        style.WindowRounding = 0.0f;
+        style.Colors[ImGuiCol_WindowBg].w = 1.0f;
+    }
+
+    ImGui_ImplSDL2_InitForVulkan(app.getWindow());
+    
+    ImGui_ImplVulkan_InitInfo init_info = {};
+    init_info.Instance = renderer.getInstance();
+    init_info.Queue = renderer.getPresentQueue();
+    init_info.DescriptorPool = renderer.getDescriptorPool();
+    init_info.RenderPass = renderer.getRenderPass();
+    init_info.Device = renderer.getDevice();
+    init_info.PhysicalDevice = renderer.getPhysicalDevice();
+    // init_info.MSAASamples = renderer.getMSAASamples();
+    init_info.MinImageCount = renderer.getNumImages();
+    init_info.ImageCount = renderer.getNumImages();
+    ImGui_ImplVulkan_Init(&init_info);
+
+    ImGui_ImplVulkan_CreateFontsTexture();
+}
+
+void Overlay::shutdown() {
+    ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+}
+
+void Overlay::newFrame() {
+
+    ImGui_ImplVulkan_NewFrame();
+    ImGui_ImplSDL2_NewFrame();
+    ImGui::NewFrame();
+}
+
+void Overlay::renderPlatformWindows() {
+
+    if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+        ImGui::UpdatePlatformWindows();
+        ImGui::RenderPlatformWindowsDefault();
+    }
+}
+
+
+
+void Overlay::render() {
+
+    Renderer& renderer = App::Get().getRenderer();
+
+    ImGui::Render();
+    main_draw_data = ImGui::GetDrawData();
+    mainMinimized = (main_draw_data->DisplaySize.x <= 0.0f || main_draw_data->DisplaySize.y <= 0.0f);
+    ImGui_ImplVulkan_RenderDrawData(main_draw_data, renderer.getCommandBuffer(renderer.getFrame()));
+    renderPlatformWindows();
+}
+
+bool Overlay::isMinimized() {
+    return mainMinimized;
+}