protected virtual void OnClipperPaint(object sender, SKPaintSurfaceEventArgs e)
{
var canvas = e.Surface.Canvas;
canvas.Clear();
ClippingGeometry = Element.Clip;
if (ClippingGeometry == null)
{
return;
}
using (var paint = new SKPaint
{
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = SKColors.White
})
{
canvas.DrawPath(ClippingGeometry.ToSKPath(), paint);
RealControl?.SetClipperCanvas(ClipperCanvas);
if (_backgroundCanvas.IsValueCreated)
{
BackgroundCanvas.SetClipperCanvas(ClipperCanvas);
}
}
}
async void UpdateSource(bool initialize)
{
if (initialize && Element.Source == default(ImageSource))
{
return;
}
ImageSource source = Element.Source;
((IImageController)Element).SetIsLoading(true);
if (RealControl != null)
{
bool success = await RealControl.LoadFromImageSourceAsync(source);
if (!IsDisposed && success)
{
((IVisualElementController)Element).PlatformSizeChanged();
UpdateAfterLoading(initialize);
}
}
if (!IsDisposed)
{
((IImageController)Element).SetIsLoading(false);
}
}
void UpdateAspect(bool initialize)
{
if (initialize && Element.Aspect == Aspect.AspectFit)
{
return;
}
RealControl.ApplyAspect(Element.Aspect);
}
void UpdateRadius(bool init)
{
CornerRadius = Element.CornerRadius;
int topLeft = Forms.ConvertToScaledPixel(Element.CornerRadius.TopLeft);
int topRight = Forms.ConvertToScaledPixel(Element.CornerRadius.TopRight);
int bottomLeft = Forms.ConvertToScaledPixel(Element.CornerRadius.BottomLeft);
int bottomRight = Forms.ConvertToScaledPixel(Element.CornerRadius.BottomRight);
if (!init)
{
RealControl.Draw();
}
}
void UpdateFile(bool initialize)
{
if (initialize && Specific.GetFile(Element) == default || Element.Source != default(ImageSource))
{
return;
}
if (RealControl != null)
{
bool success = RealControl.LoadFromFile(Specific.GetFile(Element));
if (!IsDisposed && success)
{
((IVisualElementController)Element).PlatformSizeChanged();
UpdateAfterLoading(initialize);
}
}
}
protected override void UpdateLayout()
{
base.UpdateLayout();
RealControl.Draw(Control.Geometry);
}
protected override ESize Measure(int availableWidth, int availableHeight)
{
return(RealControl != null?RealControl.Measure(availableWidth, availableHeight) : base.Measure(availableHeight, availableHeight));
}
