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#include <SDL/SDL.h>
#include <SDL/SDL_ttf.h>
SDL_Surface *getPercentage(int pourc, TTF_Font* font)
{
SDL_Color white = {255, 255, 255, 0};
char aff_pourc[10];
sprintf(aff_pourc, "%d %%", pourc);
SDL_Surface *tmp = TTF_RenderText_Blended(font, aff_pourc, white);
return tmp;
}
int main ( int argc, char** argv )
{
TTF_Font *font;
SDL_Surface* screen, *tmp=NULL;
SDL_Event event;
char *ttffile = "verdana.ttf";
int percentage = 0;
unsigned int next = 0, speed = 1000;
SDL_Rect dstrect;
// initialize SDL video
if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError() );
return EXIT_FAILURE;
}
if ( TTF_Init() < 0) {
fprintf(stderr, "Unable to init SDL_TTF: %s\n", TTF_GetError() );
return EXIT_FAILURE;
}
font = TTF_OpenFont(ttffile, 26);
if(font == NULL) {
fprintf(stderr, "Unable to open ttf file %s -> %s\n", ttffile, TTF_GetError() );
return EXIT_FAILURE;
}
// create a new window
screen = SDL_SetVideoMode(640, 480, 16, SDL_HWSURFACE|SDL_DOUBLEBUF);
if ( !screen )
{
fprintf(stderr, "Unable to set 640x480 video: %s\n", SDL_GetError());
return EXIT_FAILURE;
}
// program main loop
int done = 0;
while (!done)
{
// message processing loop
while (SDL_PollEvent(&event))
{
// check for messages
switch (event.type)
{
// exit if the window is closed
case SDL_QUIT:
done = 1;
break;
// check for keypresses
case SDL_KEYDOWN:
{
// exit if ESCAPE is pressed
if (event.key.keysym.sym == SDLK_ESCAPE)
done = 1;
break;
}
} // end switch
} // end of message processing
if(SDL_GetTicks() > next) {
next = SDL_GetTicks() + speed;
percentage += 5;
//Are we above the maximum ?
if(percentage > 100) {
percentage = 100;
}
else { //Otherwise, we need a new surface
//Free memory
SDL_FreeSurface(tmp);
//Get new surface
tmp = getPercentage(percentage, font);
}
}
//clears screen
SDL_FillRect(screen, NULL, 0);
// centers the bitmap on screen
dstrect.x = (screen->w-tmp->w)/2;
dstrect.y = (screen->h-tmp->h)/2;
SDL_BlitSurface(tmp, NULL, screen, &dstrect);
//display
SDL_Flip(screen);
} // end main loop
TTF_Quit();
SDL_Quit();
// all is well ;)
printf("Exited cleanly\n");
(void) argc;
(void) argv;
return 0;
} |
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