src/screen.cpp

   1 #include "common.h"
   2 #include "screen.h"
   3
   4 #include "SDL_opengl.h"
   5
   6 using namespace IPDF;
   7 using namespace std;
   8
   9 Screen::Screen()
  10 {
  11         SDL_Init(SDL_INIT_VIDEO);
  12         m_window = SDL_CreateWindow("IPDF", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
  13                         800, 600, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
  14
  15         if (!m_window)
  16         {
  17                 Fatal("Couldn't create window!");
  18         }
  19
  20         m_gl_context = SDL_GL_CreateContext(m_window);
  21
  22 }
  23
  24 Screen::~Screen()
  25 {
  26         SDL_GL_DeleteContext(m_gl_context);
  27         SDL_DestroyWindow(m_window);
  28         SDL_Quit();
  29 }
  30
  31 void Screen::ResizeViewport(int width, int height)
  32 {
  33         glViewport(0, 0, width, height);
  34         m_viewport_width = width;
  35         m_viewport_height = height;
  36 }
  37
  38 bool Screen::PumpEvents()
  39 {
  40         SDL_Event evt;
  41         bool no_quit_requested = true;
  42         while (SDL_PollEvent(&evt))
  43         {
  44                 switch (evt.type)
  45                 {
  46                 case SDL_QUIT:
  47                         no_quit_requested = false;
  48                         break;
  49                 case SDL_WINDOWEVENT:
  50                         switch (evt.window.event)
  51                         {
  52                         case SDL_WINDOWEVENT_RESIZED:
  53                         case SDL_WINDOWEVENT_SIZE_CHANGED:
  54                                 ResizeViewport(evt.window.data1, evt.window.data2);
  55                                 break;
  56                         }
  57                         break;
  58                 default:
  59                         break;
  60                 }
  61         }
  62         return no_quit_requested;
  63 }
  64
  65 void Screen::Present()
  66 {
  67         SDL_GL_SwapWindow(m_window);
  68 }
  69