RE: Silverlight Bug: Transforms and OpacityMask

( Soprano) — Tue, 23 Feb 2010 21:36:38 +0300

I cannot make OpacityMask using code in Silverlight 3. I tried the following simple example and it does not show any error nor displays the mask at all. It is like being ignored.

The following code ignores the: rect1.OpacityMask = irgb; to apply the opacity mask at runtime.

public MainPage()

{

InitializeComponent();

Rectangle rect1 = new Rectangle();

rect1.Width = 300;

rect1.Height = 300;

rect1.Fill = new SolidColorBrush(Colors.Red);

RadialGradientBrush irgb = new RadialGradientBrush();

irgb.GradientOrigin = new Point(0.5, 0.5);

irgb.Center = new Point(0.5, 0.5);

irgb.RadiusX = 0.5;

irgb.RadiusY = 0.5;

GradientStop gs1 = new GradientStop();

GradientStop gs2 = new GradientStop();

GradientStop gs3 = new GradientStop();

GradientStop gs4 = new GradientStop();

// Set the color for each stop object

gs1.Color = Color.FromArgb(255, 255, 255, 255);

gs2.Color = Color.FromArgb(255, 255, 255, 255);

gs3.Color = Color.FromArgb(255, 150, 150, 150);

gs4.Color = Color.FromArgb(255, 0, 0, 0);

// Set the offset for each stop object

gs1.Offset = 0.0;

gs2.Offset = 0.25;

gs3.Offset = 0.75;

gs4.Offset = 1.0;

// Add the Gradient stops to the Linear Gradient Brush

irgb.GradientStops.Add(gs1);

irgb.GradientStops.Add(gs2);

irgb.GradientStops.Add(gs3);

irgb.GradientStops.Add(gs4);

rect1.OpacityMask = irgb;

LayoutRoot.Children.Add(rect1);

}

RE: Silverlight Bug: Transforms and OpacityMask

( Luke Puplett) — Wed, 11 Nov 2009 21:05:50 +0300

Hi I've just been trying to make a ticker whereby the edges of the content (usually text) fade into the surroundings. When translating the text (label, Canvas, etc.) the OpacityMask either moves or shrinks although the ScrollViewer generally is less buggy.

I've added some commentry at the end of the OpactiyMask MSDN documentation.

Glad I'm not alone ;)

Luke

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RE: Silverlight Bug: Transforms and OpacityMask

RE: Silverlight Bug: Transforms and OpacityMask