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public class ShadowBorderDecorator : Decorator
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private static SolidColorBrush backgroundBrush;
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private static LinearGradientBrush leftBrush;
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private static LinearGradientBrush topBrush;
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private static LinearGradientBrush rightBrush;
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private static LinearGradientBrush bottomBrush;
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private static RadialGradientBrush topLeftBrush;
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private static RadialGradientBrush topRightBrush;
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private static RadialGradientBrush bottomLeftBrush;
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private static RadialGradientBrush bottomRightBrush;
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private SolidColorBrush backgroundBrush;
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private LinearGradientBrush leftBrush;
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private LinearGradientBrush topBrush;
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private LinearGradientBrush rightBrush;
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private LinearGradientBrush bottomBrush;
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private RadialGradientBrush topLeftBrush;
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private RadialGradientBrush topRightBrush;
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private RadialGradientBrush bottomLeftBrush;
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private RadialGradientBrush bottomRightBrush;
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static ShadowBorderDecorator()
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MarginProperty.OverrideMetadata(typeof(ShadowBorderDecorator), new FrameworkPropertyMetadata(new Thickness(6)));
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public ShadowBorderDecorator()
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private static void CreateBrushes()
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public byte StartAlpha
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private void CreateBrushes()
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// Create gradient stops for given shadow color.
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var shadowColor = Color.FromArgb(128, 0, 0, 0);
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var transparentColor = Color.FromArgb(0, 0, 0, 0);
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var shadowColor = Color.FromArgb(this.StartAlpha, 0, 0, 0);
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var transparentColor = Color.FromArgb(this.EndAlpha, 0, 0, 0);
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var gradientStops = new GradientStopCollection(2)
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new GradientStop(shadowColor, 0),
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Ircsil/Controls/ShadowBorderDecorator.cs
