void UpdateCanvas()
{
BackgroundCanvas?.Invalidate();
_clipper?.Invalidate();
if (ShadowElement.HasShadow)
{
UpdateShadowGeometry();
}
else
{
_shadowCanvasView?.Invalidate();
}
}
protected override void OnBackgroundLayoutUpdated(object sender, NLayoutEventArgs e)
{
base.OnBackgroundLayoutUpdated(sender, e);
if (_clipper != null)
{
_clipper.Geometry = Control.Geometry;
_clipper.Invalidate();
}
if (_shadowCanvasView != null && ShadowElement.HasShadow)
{
UpdateShadowGeometry();
_shadowCanvasView.Invalidate();
}
}
public override View Run()
{
var scrollView = new Tizen.UIExtensions.NUI.ScrollView
{
BackgroundColor = Color.Blue,
WidthSpecification = LayoutParamPolicies.MatchParent,
HeightSpecification = LayoutParamPolicies.MatchParent
};
scrollView.ContentContainer.Layout = new LinearLayout
{
LinearAlignment = LinearLayout.Alignment.Center,
LinearOrientation = LinearLayout.Orientation.Vertical,
};
scrollView.ContentContainer.WidthSpecification = LayoutParamPolicies.MatchParent;
scrollView.ContentContainer.HeightSpecification = LayoutParamPolicies.WrapContent;
{
var clipper = new SKClipperView
{
WidthSpecification = LayoutParamPolicies.MatchParent,
SizeHeight = 300,
};
clipper.DrawClippingArea += OnDrawCircle;
clipper.Add(new Image
{
WidthSpecification = LayoutParamPolicies.MatchParent,
HeightSpecification = LayoutParamPolicies.MatchParent,
ResourceUrl = Application.Current.DirectoryInfo.Resource + "dotnet_bot.png",
});
scrollView.ContentContainer.Add(clipper);
var btn = new Button
{
Text = "Change"
};
scrollView.ContentContainer.Add(btn);
btn.Clicked += (s, e) =>
{
if (isCircle)
{
clipper.DrawClippingArea -= OnDrawCircle;
clipper.DrawClippingArea += OnDrawRoundRect;
}
else
{
clipper.DrawClippingArea -= OnDrawRoundRect;
clipper.DrawClippingArea += OnDrawCircle;
}
isCircle = !isCircle;
clipper.Invalidate();
};
}
for (int i = 0; i < 10; i++)
{
var clipper = new SKClipperView
{
WidthSpecification = LayoutParamPolicies.MatchParent,
SizeHeight = 300,
};
clipper.DrawClippingArea += (s, e) =>
{
var canvas = e.Surface.Canvas;
var width = e.Info.Width;
var height = e.Info.Height;
using (var paint = new SKPaint
{
IsAntialias = true,
Color = SKColors.White,
Style = SKPaintStyle.Fill,
})
{
canvas.Clear();
canvas.DrawCircle(width / 2.0f, height / 2.0f, Math.Min(width, height) / 2.0f, paint);
}
};
clipper.Add(new Image
{
WidthSpecification = LayoutParamPolicies.MatchParent,
HeightSpecification = LayoutParamPolicies.MatchParent,
ResourceUrl = Application.Current.DirectoryInfo.Resource + "dotnet_bot.png",
});
clipper.Add(new Label
{
WidthSpecification = LayoutParamPolicies.MatchParent,
HeightSpecification = LayoutParamPolicies.MatchParent,
Text = "Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text",
LineBreakMode = LineBreakMode.CharacterWrap,
});
scrollView.ContentContainer.Add(clipper);
}
return(scrollView);
}
