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/*This source code copyrighted by Lazy Foo' Productions (2004-2013)
and may not be redistributed without written permission.*/
//The headers
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#include <string>
//Screen attributes
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const int SCREEN_BPP = 32;
//The surfaces
SDL_Surface *image = NULL;
SDL_Surface *screen = NULL;
SDL_Surface *load_image( std::string filename )
{
//The image that's loaded
SDL_Surface* loadedImage = NULL;
//The optimized image that will be used
SDL_Surface* optimizedImage = NULL;
//Load the image using SDL_image
loadedImage = IMG_Load( filename.c_str() );
//If the image loaded
if( loadedImage != NULL )
{
//Create an optimized image
optimizedImage = SDL_DisplayFormat( loadedImage );
//Free the old image
SDL_FreeSurface( loadedImage );
}
//Return the optimized image
return optimizedImage;
}
void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination )
{
//Rectangle to hold the offsets
SDL_Rect offset;
//Get offsets
offset.x = x;
offset.y = y;
//Blit the surface
SDL_BlitSurface( source, NULL, destination, &offset );
}
bool init()
{
//Initialize all SDL subsystems
if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
{
return false;
}
//Set up the screen
screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );
//If there was an error in setting up the screen
if( screen == NULL )
{
return false;
}
//Set the window caption
SDL_WM_SetCaption( "PNG test", NULL );
//If everything initialized fine
return true;
}
void clean_up()
{
//Free the surface
SDL_FreeSurface( image );
//Quit SDL
SDL_Quit();
}
int main( int argc, char* args[] )
{
//Initialize
if( init() == false )
{
return 1;
}
//Load the image
image = load_image( "look.png" );
//If there was a problem in loading the image
if( image == NULL )
{
return 1;
}
//Apply the surface to the screen
apply_surface( 0, 0, image, screen );
//Update the screen
if( SDL_Flip( screen ) == -1 )
{
return 1;
}
//Wait 2 seconds
SDL_Delay( 2000 );
//Free the surface and quit SDL
clean_up();
return 0;
}
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