/// <summary>
/// Computes size of the auto-sized image
/// </summary>
/// <param name="imageSize"></param>
/// <param name="imageRect"></param>
/// <param name="windowRect"></param>
/// <param name="srcRect"></param>
/// <returns></returns>
public static Rectangle ComputeImageSize(AutoImageSize imgSize, Rectangle imgRect, Rectangle wndRect)
{
float imgAspect = ((float)imgRect.Height) / (float)imgRect.Width;
float wndAspect = ((float)wndRect.Height) / (float)wndRect.Width;
if ((imgSize == AutoImageSize.Stretch) && (imgAspect > wndAspect))
{
int h = wndRect.Height;
int y = wndRect.Y;
int w = (int)(wndRect.Height / imgAspect);
int x = wndRect.X + (wndRect.Width - w) / 2;
return(new Rectangle(x, y, w + x, y + h));
}
if ((imgSize == AutoImageSize.FitWidth) || ((imgSize == AutoImageSize.Stretch) && (imgAspect <= wndAspect)))
{
int x = wndRect.X;
int w = wndRect.Width;
int h = (int)(imgAspect * wndRect.Width);
int y = wndRect.Y + (wndRect.Height - h) / 2;
return(new Rectangle(x, y, w + x, y + h));
}
return(wndRect);
}
/// <summary>
/// Computes size of the auto-sized image
/// </summary>
/// <param name="imageSize"></param>
/// <param name="imageRect"></param>
/// <param name="windowRect"></param>
/// <param name="srcRect"></param>
/// <returns></returns>
public static Rectangle ComputeImageSize ( AutoImageSize imgSize, Rectangle imgRect, Rectangle wndRect )
{
float imgAspect = ((float)imgRect.Height) / (float)imgRect.Width;
float wndAspect = ((float)wndRect.Height) / (float)wndRect.Width;
if( ( imgSize == AutoImageSize.Stretch ) && ( imgAspect > wndAspect ) ) {
int h = wndRect.Height;
int y = wndRect.Y;
int w = (int)( wndRect.Height / imgAspect );
int x = wndRect.X + ( wndRect.Width - w ) / 2;
return new Rectangle( x, y, w + x, y + h );
}
if( ( imgSize == AutoImageSize.FitWidth ) || ( ( imgSize == AutoImageSize.Stretch ) && ( imgAspect <= wndAspect ) ) ) {
int x = wndRect.X;
int w = wndRect.Width;
int h = (int)( imgAspect * wndRect.Width );
int y = wndRect.Y + ( wndRect.Height - h ) / 2;
return new Rectangle( x, y, w + x, y + h );
}
return wndRect;
}