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Screen.H

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#ifndef _SCREEN_H_
#define _SCREEN_H_

#include <GL/gl.h>
#include <Rect.H>
#include <xstl.H>

namespace xchen
{
  class Screen 
  {
  public:
      static void Init(const string fname) { imageName = fname; glPixelStorei(GL_PACK_ALIGNMENT, 1); }

      static void SetSize(int w, int h);
      static int GetWidth()                  { return width; }
      static int GetHeight()                 { return height; }

      static void SaveImage(const GLViewPort& vp, const char* fname=0);       
      static void SaveImage(const char* fname=0, int sx=0, int sy=0, int w=0, int h=0);

  public:
      static void glut_reshape_cb(int w, int h)  { SetSize(w,h); }  

  private:
      static string imageName;
      static int width, height;
  };

  inline void Screen :: SaveImage(const GLViewPort& vp, const char* fname)
  {
    SaveImage(fname, vp.StartX(), vp.StartY(), vp.Width(), vp.Height()); 
  }
}
#endif

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