protected override UIImage GenerateFullProgressImage()
{
UIImage resultImage;
UIGraphics.BeginImageContextWithOptions(Bounds.Size, false, UIScreen.MainScreen.Scale);
using (var context = UIGraphics.GetCurrentContext())
using (var path = BezierPathGenerator.Bagel(CenterPoint, startRadius, endRadius, 0f, FullCircleAngle))
{
context.SaveState();
context.SetFillColor(Colors.CGColor);
context.AddPath(path.CGPath);
context.FillPath();
context.RestoreState();
context.SaveState();
context.AddPath(path.CGPath);
context.Clip();
context.RestoreState();
resultImage = UIGraphics.GetImageFromCurrentImageContext();
}
return(resultImage);
}
public override void DrawInContext(CGContext context)
{
var progressAngle = CalculateProgressAngle(Percentage);
using (var path = BezierPathGenerator.Bagel(CenterPoint, startRadius, endRadius, 0f, progressAngle))
{
context.AddPath(path.CGPath);
context.Clip();
context.DrawImage(Bounds, fullProgressImage.CGImage);
}
}
public override UIImage GenerateBackgroundImage()
{
UIImage resultImage;
UIGraphics.BeginImageContextWithOptions(BackBounds.Size, false, UIScreen.MainScreen.Scale);
var center = new CGPoint(BackBounds.GetMidX(), BackBounds.GetMidY());
using (var context = UIGraphics.GetCurrentContext())
using (var innerBorderBagelPath = BezierPathGenerator.Bagel(center, startRadius, endRadius, 0f, FullCircleAngle))
{
context.SaveState();
context.SetFillColor(BGColors.CGColor);
innerBorderBagelPath.Fill();
context.RestoreState();
resultImage = UIGraphics.GetImageFromCurrentImageContext();
}
return(resultImage);
}