public override void Draw(CGRect rect)
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
if (myLabelRenderer.IsGradient)
{
var gradientView = new UIView(Control.Frame);
Control.BackgroundColor = UIColor.Clear;
Color color = ColorInterpolator.InterpolateBetween(myLabelRenderer.StartColor,
myLabelRenderer.EndColor,
myLabelRenderer.NumToGradient);
var gradientLayer = new CAGradientLayer
{
Frame = gradientView.Layer.Bounds,
Colors = new CGColor[] { myLabelRenderer.StartColor.ToCGColor(), color.ToCGColor() }
};
gradientView.Layer.AddSublayer(gradientLayer);
gradientView.AddSubview(Control);
var gradientLabel = new UILabel(Control.Frame);
gradientLabel.AddSubview(gradientView);
SetNativeControl(gradientLabel);
gradientLayer.StartPoint = new CGPoint(0, 0.5);
gradientLayer.EndPoint = new CGPoint(1.0, 0.5);
}
else
{
Control.BackgroundColor = myLabelRenderer.StaticColor.ToUIColor();
}
base.Draw(rect);
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName.Equals(MyLabelRenderer.StaticColorProperty.PropertyName))
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
SetDrawable(myLabelRenderer);
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Label> e)
{
base.OnElementChanged(e);
if ((Control != null) && (e.OldElement == null))
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
SetDrawable(myLabelRenderer);
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Label> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
TypeBorder = myLabelRenderer.TypeBorder;
}
}
public override void LayoutSubviews()
{
base.LayoutSubviews();
CAShapeLayer cAShapeLayer = null;
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
switch (TypeBorder)
{
case TypeBorder.All:
cAShapeLayer = new CAShapeLayer()
{
Path = UIBezierPath.FromRoundedRect(base.Bounds,
UIRectCorner.BottomLeft | UIRectCorner.TopLeft | UIRectCorner.BottomRight | UIRectCorner.TopRight,
new CGSize(myLabelRenderer.BorderRadius, myLabelRenderer.BorderRadius)).CGPath
};
break;
case TypeBorder.Right:
cAShapeLayer = new CAShapeLayer()
{
Path = UIBezierPath.FromRoundedRect(base.Bounds,
UIRectCorner.BottomRight | UIRectCorner.TopRight,
new CGSize(myLabelRenderer.BorderRadius, myLabelRenderer.BorderRadius)).CGPath
};
break;
case TypeBorder.Up:
cAShapeLayer = new CAShapeLayer()
{
Path = UIBezierPath.FromRoundedRect(base.Bounds,
UIRectCorner.TopLeft | UIRectCorner.TopRight,
new CGSize(myLabelRenderer.BorderRadius, myLabelRenderer.BorderRadius)).CGPath
};
break;
case TypeBorder.Left:
cAShapeLayer = new CAShapeLayer()
{
Path = UIBezierPath.FromRoundedRect(base.Bounds,
UIRectCorner.BottomLeft | UIRectCorner.TopLeft,
new CGSize(myLabelRenderer.BorderRadius, myLabelRenderer.BorderRadius)).CGPath
};
break;
case TypeBorder.Down:
cAShapeLayer = new CAShapeLayer()
{
Path = UIBezierPath.FromRoundedRect(base.Bounds,
UIRectCorner.BottomLeft | UIRectCorner.BottomRight,
new CGSize(myLabelRenderer.BorderRadius, myLabelRenderer.BorderRadius)).CGPath
};
break;
}
base.Layer.Mask = cAShapeLayer;
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName.Equals(MyLabelRenderer.StaticColorProperty.PropertyName))
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
Control.BackgroundColor = myLabelRenderer.StaticColor.ToUIColor();
}
if (e.PropertyName.Equals(MyLabelRenderer.TextColorProperty.PropertyName))
{
MyLabelRenderer myLabelRenderer = (MyLabelRenderer)Element;
Control.TextColor = myLabelRenderer.TextColor.ToUIColor();
}
}
void SetDrawable(MyLabelRenderer myLabelRenderer)
{
GradientDrawable gradientDrawable = new GradientDrawable();
if (myLabelRenderer.IsGradient)
{
Color color = ColorInterpolator.InterpolateBetween(myLabelRenderer.StartColor,
myLabelRenderer.EndColor,
myLabelRenderer.NumToGradient);
gradientDrawable = new GradientDrawable(
GradientDrawable.Orientation.LeftRight,
new int[] { myLabelRenderer.StartColor.ToAndroid(), color.ToAndroid() }
);
}
else
{
gradientDrawable.SetColor(myLabelRenderer.StaticColor.ToAndroid());
}
switch (myLabelRenderer.TypeBorder)
{
case TypeBorder.All:
gradientDrawable.SetCornerRadii(new float[] { 80, 80, 80, 80,
80, 80, 80, 80 });
break;
case TypeBorder.Left:
gradientDrawable.SetCornerRadii(new float[] { 80, 80, 0, 0,
0, 0, 80, 80 });
break;
case TypeBorder.Right:
gradientDrawable.SetCornerRadii(new float[] { 0, 0, 80, 80,
80, 80, 0, 0 });
break;
case TypeBorder.Down:
gradientDrawable.SetCornerRadii(new float[] { 0, 0, 0, 0,
80, 80, 80, 80 });
break;
case TypeBorder.Up:
gradientDrawable.SetCornerRadii(new float[] { 80, 80, 80, 80,
0, 0, 0, 0 });
break;
}
Control.SetBackground(gradientDrawable);
}
