protected override void OnElementChanged(ElementChangedEventArgs <ContentView> e)
{
base.OnElementChanged(e);
if (element != null)
{
return;
}
element = (RoundedContentView)e.NewElement;
this.SetupCorners();
}
public override void Draw(CoreGraphics.CGRect rect)
{
base.Draw(rect);
this.LayoutIfNeeded();
RoundedContentView rcv = (RoundedContentView)Element;
if (rcv == null)
{
return;
}
this.ClipsToBounds = true;
this.Layer.BackgroundColor = rcv.FillColor.ToCGColor();
this.Layer.MasksToBounds = true;
this.Layer.CornerRadius = (nfloat)rcv.CornerRadius;
if (rcv.HasShadow)
{
this.Layer.ShadowRadius = 3.0f;
this.Layer.ShadowColor = UIColor.Gray.CGColor;
this.Layer.ShadowOffset = new CGSize(1, 1);
this.Layer.ShadowOpacity = 0.60f;
//this.Layer.ShadowPath = UIBezierPath.FromRect(Layer.ContentsRect).CGPath;
this.Layer.MasksToBounds = false;
}
if (rcv.Circle)
{
this.Layer.CornerRadius = (int)(Math.Min(Element.Width, Element.Height) / 2);
}
this.Layer.BorderWidth = 0;
if (rcv.BorderWidth > 0 && rcv.BorderColor.A > 0.0)
{
this.Layer.BorderWidth = rcv.BorderWidth;
this.Layer.BorderColor =
new UIKit.UIColor(
(nfloat)rcv.BorderColor.R,
(nfloat)rcv.BorderColor.G,
(nfloat)rcv.BorderColor.B,
(nfloat)rcv.BorderColor.A).CGColor;
}
}
public RoundedDrawable(RoundedContentView element, Func <double, float> convertToPixels)
{
_element = element;
_convertToPixels = convertToPixels;
_element.PropertyChanged += Drawable_PropertyChanged;
}
protected override bool DrawChild(Canvas canvas, global::Android.Views.View child, long drawingTime)
{
if (Element == null)
{
return(false);
}
RoundedContentView rcv = (RoundedContentView)Element;
this.SetClipChildren(true);
rcv.Padding = new Thickness(0, 0, 0, 0);
int radius = (int)(rcv.CornerRadius);
if (rcv.Circle)
{
radius = Math.Min(Width, Height) / 2;
}
radius *= 2;
try
{
var path = new Path();
path.AddRoundRect(new RectF(0, 0, Width, Height),
new float[] { radius, radius, radius, radius, radius, radius, radius, radius },
Path.Direction.Ccw);
if (rcv.HasShadow)
{
var shadowPath = new Path();
shadowPath.AddRoundRect(new RectF(5, 5, Width, Height),
new float[] { radius, radius, radius, radius, radius, radius, radius, radius },
Path.Direction.Ccw);
var paint = new Paint();
paint.AntiAlias = true;
paint.StrokeWidth = 5;
paint.SetStyle(Paint.Style.Stroke);
paint.Color = Xamarin.Forms.Color.FromRgba(0, 0, 0, 0.3).ToAndroid();
canvas.DrawPath(shadowPath, paint);
}
canvas.Save();
canvas.ClipPath(path);
canvas.DrawColor(rcv.FillColor.ToAndroid());
var result = base.DrawChild(canvas, child, drawingTime);
canvas.Restore();
if (rcv.BorderWidth > 0)
{
var paint = new Paint();
paint.AntiAlias = true;
paint.StrokeWidth = rcv.BorderWidth;
paint.SetStyle(Paint.Style.Stroke);
paint.Color = rcv.BorderColor.ToAndroid();
canvas.DrawPath(path, paint);
}
path.Dispose();
return(result);
}
catch (Exception ex)
{
System.Console.Write(ex.Message);
}
return(base.DrawChild(canvas, child, drawingTime));
}
