public void Scale(int?width, int?height, WicBitmapInterpolationMode mode)
{
if (!width.HasValue && !height.HasValue)
{
throw new ArgumentException();
}
int neww;
int newh;
if (width.HasValue && height.HasValue)
{
neww = width.Value;
newh = height.Value;
}
else
{
int w = Width;
int h = Height;
if (w == 0 || h == 0)
{
return;
}
if (width.HasValue)
{
neww = width.Value;
newh = (width.Value * h) / w;
}
else
{
newh = height.Value;
neww = (height.Value * w) / h;
}
}
if (neww <= 0 || newh <= 0)
{
throw new ArgumentException();
}
CheckDisposed();
_source = Scale(_source, neww, newh, mode);
Stats();
}
private static IWICBitmapScaler Scale(IWICBitmapSource source, int width, int height, WicBitmapInterpolationMode mode)
{
var wfac = (IWICImagingFactory) new WICImagingFactory();
IWICBitmapScaler scaler = null;
try
{
scaler = wfac.CreateBitmapScaler();
scaler.Initialize(source, width, height, mode);
Marshal.ReleaseComObject(source);
return(scaler);
}
finally
{
Release(wfac);
}
}
