/*
** Ortho test
*/

#include <stdio.h>

#include <GLES/gl.h>
#include "SDL.h"
#include "PDL.h"

SDL_Surface *surface = NULL;               // Screen surface to retrieve width/height information

GLfloat square[] = {
    0.25, 0.25, 0.0,
    0.75, 0.25, 0.0,
    0.25, 0.75, 0.0,
    0.75, 0.75, 0.0
    };

int init( void )
{
  glClearColor (0.0f, 0.0f, 0.7f, 1.0f);

  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glOrthof(0.0f, 1.0f, 0.0f, 1.0f, -1.0f, 1.0f);
  glMatrixMode(GL_MODELVIEW);

  return 1;
}

void shut( void )
{
}

void display()
{
  glLoadIdentity();
  glClear (GL_COLOR_BUFFER_BIT);

  glEnableClientState(GL_VERTEX_ARRAY);
  glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
  glVertexPointer(3, GL_FLOAT, 0, square);
  glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
  glDisableClientState(GL_VERTEX_ARRAY);

  SDL_GL_SwapBuffers();
}

int main( int argc, char** argv )
{
  // Initialize the SDL library with the Video subsystem
  SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE);
  atexit(SDL_Quit);

  // start the PDL library
  PDL_Init(0);
  atexit(PDL_Quit);

  PDL_SetOrientation(PDL_ORIENTATION_90);

  // Set the video mode to full screen with OpenGL-ES support
  // use zero for width/height to use maximum resolution
  surface = SDL_SetVideoMode(0, 0, 0, SDL_OPENGL);

  init();


  // Event descriptor
  SDL_Event Event;
  SDL_bool paused = SDL_FALSE;
  SDL_bool done = SDL_FALSE;

  while( !done )
  {
    // Render our scene
    display();

    SDL_bool gotEvent;
    if (paused)
    {
      SDL_WaitEvent(&Event);
      gotEvent = SDL_TRUE;
    }
    else
    {
      gotEvent = SDL_PollEvent(&Event);
    }

    while( gotEvent )
    {
      switch (Event.type)
      {
        // List of keys that have been pressed
        case SDL_KEYDOWN:
          switch (Event.key.keysym.sym)
          {
            case PDLK_GESTURE_BACK: /* also maps to ESC */
              if( PDL_GetPDKVersion() >= 200 )
              {
                // standard behavior is to minimize to a card when you perform a back
                // gesture at the top level of the app
                PDL_Minimize();
              }
              break;

            default:
              break;
          }
          break;

        case SDL_ACTIVEEVENT:
          if( Event.active.state == SDL_APPACTIVE )
          {
            paused = !Event.active.gain;
          }
          break;

        case SDL_QUIT:
          // We exit anytime we get a request to quit the app
          // all shutdown code is registered via atexit() so this is clean.
          done = SDL_TRUE;
          break;

        default:
          break;
      }
      gotEvent = SDL_PollEvent(&Event);
    }
  }

  shut();

  return 0;
}