InitScreen.cpp

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