StylusPlugIn.ElementBounds Property

Reference

Definition

Namespace:: System.Windows.Input.StylusPlugIns

Assembly:: PresentationCore.dll

Important

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Gets the cached bounds of the element.

public:
 property System::Windows::Rect ElementBounds { System::Windows::Rect get(); };

public System.Windows.Rect ElementBounds { get; }

member this.ElementBounds : System.Windows.Rect

Public ReadOnly Property ElementBounds As Rect

Property Value

Rect

The cached bounds of the element.

Examples

The following example demonstrates how a DynamicRenderer, which inherits from StylusPlugIn, uses an ImageBrush to render a stroke. This brush partially draws the image file specified by imageFile.

if (imageBrush == null)
{
    // Create an ImageBrush.  imageFile is a string that's a path to an image file.
    image1 = new BitmapImage(new Uri(imageFile));
    imageBrush = new ImageBrush(image1);

    // Don't tile, don't stretch; align to top/left.
    imageBrush.TileMode = TileMode.None;
    imageBrush.Stretch = Stretch.None;
    imageBrush.AlignmentX = AlignmentX.Left;
    imageBrush.AlignmentY = AlignmentY.Top;

    // Map the brush to the entire bounds of the element.
    imageBrush.ViewportUnits = BrushMappingMode.Absolute;
    imageBrush.Viewport = this.ElementBounds;
    imageBrush.Freeze();
}

If imageBrush Is Nothing Then
    ' Create an ImageBrush.  imageFile is a string that's a path to an image file.
    image1 = New BitmapImage(New Uri(imageFile))
    imageBrush = New ImageBrush(image1)
    
    ' Don't tile, don't stretch; align to top/left.
    imageBrush.TileMode = TileMode.None
    imageBrush.Stretch = Stretch.None
    imageBrush.AlignmentX = AlignmentX.Left
    imageBrush.AlignmentY = AlignmentY.Top
    
    ' Map the brush to the entire bounds of the element.
    imageBrush.ViewportUnits = BrushMappingMode.Absolute
    imageBrush.Viewport = ElementBounds
    imageBrush.Freeze()
End If

Remarks

The StylusPlugIn caches the bounds of its element to perform hit testing.

Applies to

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