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C++ Sample Window App that Flickers on Dock Restore

main.cpp (text/x-c++src), 3.29 KB, created by Dan Unzen on 2013-08-12 23:58:19 UTC

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Description:

Filename:

MIME Type:

Creator: Dan Unzen

Created: 2013-08-12 23:58:19 UTC

Size: 3.29 KB

patch

obsolete

>// ============================================================================
>// [Include Section]
>// ============================================================================
>#include <SDL2/SDL.h>
>
>// ============================================================================
>// [SdlGame]
>// ============================================================================
>
>// SdlGame is nothing more than thin wrapper to SDL library. You just need
>// to instantiate it and call run() to enter the SDL event loop.
>class SdlGame {
>public:
>	SdlGame();
>	virtual ~SdlGame();
>	
>	// Application state (just convenience instead of 0, 1, ...).
>	enum APP_STATE {
>		APP_OK = 0,
>		APP_FAILED = 1
>	};
>   
>   const char* const APPTITLE = "SDL Game";
>
>	// Run the application
>	int run( int width, int height );
>	
>	// Called to render content into buffer.
>	void Render();
>	
>protected:
>private:
>	// Initialize application
>	int init( int width, int height );
>   
>   // Destroy application, called by destructor
>   void destroy();
>   
>   // Called to process SDL event.
>	void onEvent( SDL_Event* event );
>   
>	// Whether the application is in event loop.
>	bool running_;
>	SDL_Window* window_;
>	SDL_Renderer* renderer_;
>};
>
>SdlGame::SdlGame() : running_( false ) {
>}
>
>SdlGame::~SdlGame() {
>	destroy();
>}
>
>int SdlGame::init( int width, int height ) {
>	// Initialize the SDL library.
>	if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER ) < 0 ) {
>		fprintf( stderr, "SDL_Init() failed: %s\n", SDL_GetError() );
>		return APP_FAILED;
>	}
>	
>	window_ = SDL_CreateWindow( APPTITLE, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_SHOWN );
>	renderer_ = SDL_CreateRenderer( window_, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC );
>	
>	// Success.
>	return APP_OK;
>}
>
>void SdlGame::destroy() {
>	if ( window_ ) {
>		SDL_DestroyWindow( window_ );
>		SDL_DestroyRenderer( renderer_ );
>		SDL_Quit();
>	}
>}
>
>int SdlGame::run( int width, int height ) {
>	// Initialize application.
>	int state = init( width, height );
>   
>	if ( state != APP_OK)
>      return state;
>   else {
>      // Enter to the SDL event loop.
>      SDL_Event event;
>      running_ = true;
>      
>      while ( SDL_WaitEvent( &event ) ) {
>         onEvent( &event );
>         Render();
>         
>         if ( running_ == false ) {
>            break;
>         }
>      }
>   }
>	
>	return APP_OK;
>}
>
>void SdlGame::onEvent( SDL_Event* event ) {
>	switch ( event->type ) {
>      case SDL_QUIT:
>			running_ = false;
>			break;
>			
>		case SDL_KEYDOWN:
>         if ( event->key.keysym.sym == SDLK_ESCAPE ) {
>				running_ = false;
>			}
>         break;
>         
>      default:
>         break;
>	}
>}
>
>void SdlGame::Render() {
>	SDL_Rect rect;
>	int width, height;
>	SDL_GetWindowSize( window_, &width, &height );
>	
>	rect.w = 200;
>	rect.h = 200;
>	rect.x = ( width / 2 ) - ( rect.w / 2 );
>	rect.y = ( height / 2 ) - ( rect.h / 2 );
>	
>	SDL_SetRenderDrawColor( renderer_, 0x00, 0x00, 0, 0xff );
>	SDL_RenderClear( renderer_ );
>	
>	SDL_SetRenderDrawColor( renderer_, 0xff, 0xff, 0, 0xff );
>	SDL_RenderFillRect( renderer_, &rect );
>	SDL_RenderPresent( renderer_ );
>}
>
>// ============================================================================
>// [Main Entry-Point]
>// ============================================================================
>int main( int argc, char* argv[] ) {
>	SdlGame game;
>	return game.run( 800, 600 );
>}

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We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.