示例#1
0
int main(int, char**)
{
    // Setup Allegro 
    al_init();
    al_install_keyboard();
    al_install_mouse();
    al_init_primitives_addon();
    al_set_new_display_flags(ALLEGRO_RESIZABLE);
    ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
    al_set_window_title(display, "ImGui Allegro 5 example");
    ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
    al_register_event_source(queue, al_get_display_event_source(display));
    al_register_event_source(queue, al_get_keyboard_event_source());
    al_register_event_source(queue, al_get_mouse_event_source());

    // Setup ImGui binding
    ImGui_ImplA5_Init(display);

    // Load Fonts
    // (see extra_fonts/README.txt for more details)
    //ImGuiIO& io = ImGui::GetIO();
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());

    // Merge glyphs from multiple fonts into one (e.g. combine default font with another with Chinese glyphs, or add icons)
    //ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 };
    //ImFontConfig icons_config; icons_config.MergeMode = true; icons_config.PixelSnapH = true;
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 18.0f);
    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/fontawesome-webfont.ttf", 18.0f, &icons_config, icons_ranges);

    bool show_test_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImColor(114, 144, 154);

    // Main loop
    bool running = true;
    while (running) 
    {
        ALLEGRO_EVENT ev;
        while (al_get_next_event(queue, &ev))
        {
            ImGui_ImplA5_ProcessEvent(&ev);
            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) running = false;
            if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
            {
                ImGui_ImplA5_InvalidateDeviceObjects();
                al_acknowledge_resize(display);
                Imgui_ImplA5_CreateDeviceObjects();
            }
        }
        ImGui_ImplA5_NewFrame();

        // 1. Show a simple window
        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
        {
            static float f;
            ImGui::Text("Hello, world!");
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
            ImGui::ColorEdit3("clear color", (float*)&clear_color);
            if (ImGui::Button("Test Window")) show_test_window ^= 1;
            if (ImGui::Button("Another Window")) show_another_window ^= 1;
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f/ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
        }

        // 2. Show another simple window, this time using an explicit Begin/End pair
        if (show_another_window) 
        {
            ImGui::SetNextWindowSize(ImVec2(200, 100), ImGuiSetCond_FirstUseEver);
            ImGui::Begin("Another Window", &show_another_window);
            ImGui::Text("Hello");
            ImGui::End();
        }

        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
        if (show_test_window) 
        {
            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
            ImGui::ShowTestWindow(&show_test_window);
        }

        // Rendering
        al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
        ImGui::Render();
        al_flip_display();
    }

    // Cleanup
    ImGui_ImplA5_Shutdown();
    al_destroy_event_queue(queue);
    al_destroy_display(display);

    return 0;
}
void ImGui_ImplA5_NewFrame()
{
    if (!g_Texture) 
        Imgui_ImplA5_CreateDeviceObjects();

    ImGuiIO &io = ImGui::GetIO();

    // Setup display size (every frame to accommodate for window resizing)
    int w, h;
    w = al_get_display_width(g_Display);
    h = al_get_display_height(g_Display);
    io.DisplaySize = ImVec2((float)w, (float)h);

    // Setup time step
    double current_time = al_get_time();
    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
    g_Time = current_time;

    // Setup inputs
    ALLEGRO_KEYBOARD_STATE keys;
    al_get_keyboard_state(&keys);
    io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL);
    io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT);
    io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR);

    ALLEGRO_MOUSE_STATE mouse;
    if (keys.display == g_Display) 
    {
        al_get_mouse_state(&mouse);
        io.MousePos = ImVec2((float)mouse.x, (float)mouse.y);
    }
    else 
    {
        io.MousePos = ImVec2(-1, -1);
    }

    al_get_mouse_state(&mouse);
    io.MouseDown[0] = mouse.buttons & (1 << 0);
    io.MouseDown[1] = mouse.buttons & (1 << 1);
    io.MouseDown[2] = mouse.buttons & (1 << 2);

    // Hide OS mouse cursor if ImGui is drawing it
    if (io.MouseDrawCursor)
    {
        al_set_mouse_cursor(g_Display, g_MouseCursorInvisible);
    }
    else
    {
        ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT;
        switch (ImGui::GetMouseCursor())
        {
        case ImGuiMouseCursor_TextInput:    cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break;
        case ImGuiMouseCursor_Move:         cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break;
        case ImGuiMouseCursor_ResizeNS:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break;
        case ImGuiMouseCursor_ResizeEW:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break;
        case ImGuiMouseCursor_ResizeNESW:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break;
        case ImGuiMouseCursor_ResizeNWSE:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break;
        }
        al_set_system_mouse_cursor(g_Display, cursor_id);
    }

    // Start the frame
    ImGui::NewFrame();
}
示例#3
0
int main(int, char**)
{
    // Setup Allegro
    al_init();
    al_install_keyboard();
    al_install_mouse();
    al_init_primitives_addon();
    al_set_new_display_flags(ALLEGRO_RESIZABLE);
    ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
    al_set_window_title(display, "ImGui Allegro 5 example");
    ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
    al_register_event_source(queue, al_get_display_event_source(display));
    al_register_event_source(queue, al_get_keyboard_event_source());
    al_register_event_source(queue, al_get_mouse_event_source());

    // Setup ImGui binding
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
    ImGui_ImplA5_Init(display);

    // Setup style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();

    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'misc/fonts/README.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);

    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);

    // Main loop
    bool running = true;
    while (running)
    {
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        ALLEGRO_EVENT ev;
        while (al_get_next_event(queue, &ev))
        {
            ImGui_ImplA5_ProcessEvent(&ev);
            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) 
                running = false;
            if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
            {
                ImGui_ImplA5_InvalidateDeviceObjects();
                al_acknowledge_resize(display);
                Imgui_ImplA5_CreateDeviceObjects();
            }
        }
        ImGui_ImplA5_NewFrame();

        // 1. Show a simple window.
        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color

            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
            ImGui::Checkbox("Another Window", &show_another_window);

            if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);

            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
        }

        // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }

        // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
        if (show_demo_window)
        {
            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
            ImGui::ShowDemoWindow(&show_demo_window);
        }

        // Rendering
        al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
        ImGui::Render();
        ImGui_ImplA5_RenderDrawData(ImGui::GetDrawData());
        al_flip_display();
    }

    // Cleanup
    ImGui_ImplA5_Shutdown();
    ImGui::DestroyContext();
    al_destroy_event_queue(queue);
    al_destroy_display(display);

    return 0;
}