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using System.ComponentModel;
using System.Drawing;
#if __UNIFIED__
using UIKit;
using CoreGraphics;
#else
using MonoTouch.UIKit;
using MonoTouch.CoreGraphics;
#endif
#if __UNIFIED__
using RectangleF = CoreGraphics.CGRect;
using SizeF = CoreGraphics.CGSize;
using PointF = CoreGraphics.CGPoint;
#else
using nfloat=System.Single;
using nint=System.Int32;
using nuint=System.UInt32;
#endif
namespace Xamarin.Forms.Platform.iOS
{
public class BoxRenderer : VisualElementRenderer<BoxView>
{
UIColor _colorToRenderer;
SizeF _previousSize;
public override void Draw(RectangleF rect)
{
using(var context = UIGraphics.GetCurrentContext())
{
_colorToRenderer.SetFill();
context.FillRect(rect);
}
base.Draw(rect);
_previousSize = Bounds.Size;
}
public override void LayoutSubviews()
{
if (_previousSize != Bounds.Size)
SetNeedsDisplay();
}
protected override void OnElementChanged(ElementChangedEventArgs<BoxView> e)
{
base.OnElementChanged(e);
if (Element != null)
SetBackgroundColor(Element.BackgroundColor);
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == BoxView.ColorProperty.PropertyName)
SetBackgroundColor(Element.BackgroundColor);
else if (e.PropertyName == VisualElement.IsVisibleProperty.PropertyName && Element.IsVisible)
SetNeedsDisplay();
}
protected override void SetBackgroundColor(Color color)
{
if (Element == null)
return;
var elementColor = Element.Color;
if (!elementColor.IsDefault)
_colorToRenderer = elementColor.ToUIColor();
else
_colorToRenderer = color.ToUIColor();
SetNeedsDisplay();
}
}
}
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