public override UIImage ToNativeImage(CGSize targetSize, UIColor color = default(UIColor), Thickness margin = default(Thickness))
{
if (bezierPath == null)
{
return(null);
}
CGSize imageSize = bezierPath.Bounds.Size;
if ((int)imageSize.Width <= 0 && (int)imageSize.Height <= 0)
{
return(null);
}
if (nfloat.IsNaN(targetSize.Width) && nfloat.IsNaN(targetSize.Height))
{
targetSize = new CGSize(0.85f * imageSize.Width, 0.85f * imageSize.Height);
}
else if (nfloat.IsNaN(targetSize.Width))
{
targetSize.Width = (imageSize.Width / imageSize.Height) * targetSize.Height;
}
else if (nfloat.IsNaN(targetSize.Height))
{
targetSize.Height = (imageSize.Height / imageSize.Width) * targetSize.Width;
}
if ((int)targetSize.Width <= 0 && (int)targetSize.Height <= 0)
{
return(null);
}
nfloat scale = 1f;
var translate = CGPoint.Empty;
if (!imageSize.Equals(targetSize))
{
var scaleX = targetSize.Width / imageSize.Width;
var scaleY = targetSize.Height / imageSize.Height;
scale = (nfloat)Math.Min(targetSize.Width / imageSize.Width, targetSize.Height / imageSize.Height);
if (scaleX > scaleY)
{
translate.X = (targetSize.Width - (imageSize.Width * scale)) * 0.5f;
}
else if (scaleX < scaleY)
{
translate.Y = (targetSize.Height - (imageSize.Height * scale)) * 0.5f;
}
}
UIImage image;
#if __IOS__
UIGraphics.BeginImageContextWithOptions(targetSize, false, 0);
using (var context = UIGraphics.GetCurrentContext()) {
context.TranslateCTM(translate.X, translate.Y);
context.ScaleCTM(scale, scale);
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetFillColor((color ?? UIColor.Black).CGColor);
bezierPath.UsesEvenOddFillRule = (FillRule == FillRule.EvenOdd);
bezierPath.Fill();
image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
}
#elif __MACOS__
// macOS TODO
image = null;
#endif
return(image);
}
