int main(int argc, char *argv[]) {
app = new App();
app->video.width = 1024;
app->video.height = 640;
app->video.pixel_scale = 1.0f;
// set preferences_filepath and read preferences
char *pref_path = SDL_GetPrefPath(COMPANY_NAME, APPLICATION_NAME);
size_t preferences_ini_str_len = strlen(pref_path)+strlen("preferences.ini")+1;
app->preferences_filepath = new char[preferences_ini_str_len];
strcpy(app->preferences_filepath, pref_path);
strcat(app->preferences_filepath, "preferences.ini");
size_t session_ini_str_len = strlen(pref_path)+strlen("session.ini")+1;
app->session_filepath = new char[session_ini_str_len];
strcpy(app->session_filepath, pref_path);
strcat(app->session_filepath, "session.ini");
size_t imgui_ini_str_len = strlen(pref_path)+strlen("imgui.ini")+1;
ImGuiIO& io = ImGui::GetIO();
char *imgui_ini_filepath = new char[imgui_ini_str_len];
strcpy(imgui_ini_filepath, pref_path);
strcat(imgui_ini_filepath, "imgui.ini");
io.IniFilename = imgui_ini_filepath;
SDL_free(pref_path);
app->readPreferences();
app->readSession();
initSDL(&app->video);
ImGui_ImplSdlGL2_Init(sdl_window);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
app->init();
// init this last for sake of last_ticks
frametime.init();
do {
Uint32 beginTicks = SDL_GetTicks();
mainLoop();
// hack for when vsync isn't working
Uint32 elapsedTicks = SDL_GetTicks() - beginTicks;
if (elapsedTicks < 16) {
SDL_Delay(16 - elapsedTicks);
}
} while(!app->quit);
app->beforeQuit();
ImGui_ImplSdlGL2_Shutdown();
quitSDL();
return 0;
}
int main(int, char**)
{
// Setup SDL
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0)
{
printf("Error: %s\n", SDL_GetError());
return -1;
}
// Setup window
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
SDL_DisplayMode current;
SDL_GetCurrentDisplayMode(0, ¤t);
SDL_Window *window = SDL_CreateWindow("ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
SDL_GLContext glcontext = SDL_GL_CreateContext(window);
SDL_GL_SetSwapInterval(1); // Enable vsync
// Setup ImGui binding
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
ImGui_ImplSdlGL2_Init(window);
//io.NavFlags |= ImGuiNavFlags_EnableKeyboard; // Enable Keyboard Controls
// 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 done = false;
while (!done)
{
// 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.
SDL_Event event;
while (SDL_PollEvent(&event))
{
ImGui_ImplSdlGL2_ProcessEvent(&event);
if (event.type == SDL_QUIT)
done = true;
}
ImGui_ImplSdlGL2_NewFrame(window);
// 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
glViewport(0, 0, (int)ImGui::GetIO().DisplaySize.x, (int)ImGui::GetIO().DisplaySize.y);
glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
//glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
ImGui::Render();
ImGui_ImplSdlGL2_RenderDrawData(ImGui::GetDrawData());
SDL_GL_SwapWindow(window);
}
// Cleanup
ImGui_ImplSdlGL2_Shutdown();
ImGui::DestroyContext();
SDL_GL_DeleteContext(glcontext);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
