// Callback function of window size changing
void onWindowReshape(int w, int h)
{
screenWidth = w;
screenHeight = h;
// view port matrix
setViewPortMatrix();
}
void AWidget::updateWindow(int w, int h)
{
screen_offset_x=0;
screen_offset_y=0;
scale_factor=w*1.0/ASystem::GetWidth();
if(ASystem::GetHeight()*scale_factor>h)
{
scale_factor=h*1.0/ASystem::GetHeight();
}
screen_offset_x=(w-ASystem::GetWidth()*scale_factor)/2;
screen_offset_y=(h-ASystem::GetHeight()*scale_factor)/2;
int wi = ASystem::GetWidth()*scale_factor, he = ASystem::GetHeight()*scale_factor;
glViewport(screen_offset_x,screen_offset_y,wi,he);
real_width=w;
real_height=h;
projection.setToIdentity();
projection.frustum (0,ASystem::GetWidth(),0,ASystem::GetHeight(),0.01,50);
ASystem::m_widthOffset = w-wi;
ASystem::m_heightOffset = h-he;
setViewPortMatrix(projection);
}
