protected override void OnElementChanged(ElementChangedEventArgs <StackLayout> e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
try
{
stack = e.NewElement as CustomGradientRoundEdgeView;
this.StartColor = stack.StartColor;
this.EndColor = stack.EndColor;
this.gradientStyle = stack.gradientMode;
_cornerRadius = (float)stack.cornerRadius;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(@"ERROR:", ex.Message);
}
}
//public override void Draw(CGRect rect)
//{
// base.Draw(rect);
//}
public override void Draw(CoreGraphics.CGRect rect)
{
base.Draw(rect);
CustomGradientRoundEdgeView stack = (CustomGradientRoundEdgeView)this.Element;
CGColor startColor = stack.StartColor.ToCGColor();
CGColor endColor = stack.EndColor.ToCGColor();
string gradientStyle = stack.gradientMode;
/*
#region for Vertical Gradient
*
* var gradientLayer = new CAGradientLayer();
*
#endregion
*
#region for Horizontal Gradient
*
* //var gradientLayer = new CAGradientLayer()
* //{
* // StartPoint = new CGPoint(0, 0.5),
* // EndPoint = new CGPoint(1, 0.5)
* //};
*
#endregion
*/
try
{
if (stack.HasBorderColor == true && stack.BorderColor != null)
{
//double min = Math.Min(Element.Width, Element.Height);
//Control.Layer.CornerRadius = (float)(min / 2.0);
//Control.Layer.MasksToBounds = false;
//Control.Layer.BorderColor = Color.White.ToCGColor();
//Control.Layer.BorderWidth = 1;
//Control.ClipsToBounds = true;
double min = Math.Min(Element.Width, Element.Height);
//this.Layer.CornerRadius = (float)(min / 2.0);
this.Layer.MasksToBounds = false;
this.Layer.BorderColor = stack.BorderColor.ToCGColor();
this.Layer.BorderWidth = 1;
this.ClipsToBounds = true;
}
else
{
}
}
catch (Exception ex)
{
var msg = ex.Message;
//Debug.WriteLine("Unable to create circle image: " + ex);
}
var gradientLayer = new CAGradientLayer();
if (gradientStyle == "Vertical")
{
}
else
{
gradientLayer.StartPoint = new CGPoint(0, 0.5);
gradientLayer.EndPoint = new CGPoint(1, 0.5);
}
gradientLayer.Frame = rect;
gradientLayer.Colors = new CGColor[] { startColor, endColor };
gradientLayer.ModelLayer.CornerRadius = (float)(stack.cornerRadius);
NativeView.Layer.InsertSublayer(gradientLayer, 0);
}
