src/sdl/InitScreen.cpp

   1 /*
   2  * InitScreen.cpp
   3  *
   4  *  Created on: Apr 22, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "InitScreen.h"
   9
  10 #include <stdexcept>
  11
  12 using std::runtime_error;
  13
  14
  15 namespace sdl {
  16
  17 InitScreen::InitScreen(int width, int height, int bpp, Sint32 flags)
  18 : screen(SDL_SetVideoMode(width, height, bpp, flags))
  19 , bpp(bpp)
  20 , flags(flags) {
  21         if (!screen) {
  22                 throw runtime_error("failed to open screen");
  23         }
  24 }
  25
  26 InitScreen::~InitScreen(void) {
  27
  28 }
  29
  30
  31 SDL_Surface *InitScreen::Resize(int width, int height) {
  32         SDL_Surface *newScreen(SDL_SetVideoMode(width, height, bpp, flags));
  33         if (!newScreen) {
  34                 throw runtime_error("failed to resize screen");
  35         }
  36         return screen = newScreen;
  37 }
  38
  39 void InitScreen::Flip(void) {
  40         SDL_Flip(screen);
  41         if (!(screen->flags & SDL_HWSURFACE)) {
  42                 // probably got no vsync, so suspend execution for a while
  43                 SDL_Delay(1);
  44         }
  45 }
  46
  47 }