Muokkaa

Jaa

UIElement.Clip Property

  • Reference

Definition

Namespace:
System.Windows
Assembly:
PresentationCore.dll

Gets or sets the geometry used to define the outline of the contents of an element. This is a dependency property.

public:
 property System::Windows::Media::Geometry ^ Clip { System::Windows::Media::Geometry ^ get(); void set(System::Windows::Media::Geometry ^ value); };
public System.Windows.Media.Geometry Clip { get; set; }
member this.Clip : System.Windows.Media.Geometry with get, set
Public Property Clip As Geometry

Property Value

Geometry

The geometry to be used for clipping area sizing. The default is a null Geometry.

Examples

This example shows how to define a framework element's Clip region. To define a clip, use a Geometry (for example, an EllipseGeometry to set the element's Clip property. Only the area that is within the region of the geometry will be visible.

The following example shows an Image element without a defined clip region. Because no clip region is defined, the entire image is displayed.

<Image Source="sampleImages\Waterlilies.jpg" 
  Width="200" Height="150" HorizontalAlignment="Left" />

An object before applying a clip region
Image with No Clip Region

In the next example, an identical Image is created, except that it has a defined clip region. Only the part of the image that is within the area the EllipseGeometry will be displayed.

<Image 
  Source="sampleImages\Waterlilies.jpg" 
  Width="200" Height="150" HorizontalAlignment="Left">
  <Image.Clip>
    <EllipseGeometry
      RadiusX="100"
      RadiusY="75"
      Center="100,75"/>
  </Image.Clip>
</Image>

A clipped object
Image with an Elliptical Clip Region

The following example shows how animate a framework element's Clip region. In this example, an EllipseGeometry is used to define an elliptical clip region for an Image element. A PointAnimation animates the ellipse geometry's Center property from (0, 0) to (200, 150). The animation starts playing after the image is loaded and repeats indefinitely.

<Image
  Source="sampleImages\Waterlilies.jpg" 
  Width="200" Height="150" HorizontalAlignment="Left">
  <Image.Clip>
    <EllipseGeometry x:Name="MyEllipseGeometry1"
      RadiusX="100"
      RadiusY="75"
      Center="100,75"/>
  </Image.Clip>
  <Image.Triggers>
    <EventTrigger RoutedEvent="Image.Loaded">
      <BeginStoryboard>
        <Storyboard>
          <PointAnimation 
            Storyboard.TargetName="MyEllipseGeometry1" 
            Storyboard.TargetProperty="(EllipseGeometry.Center)"
            From="0,0" To="200,150" Duration="0:0:3" RepeatBehavior="Forever" 
            AutoReverse="True" />
          </Storyboard>
      </BeginStoryboard>
    </EventTrigger>
  </Image.Triggers>
</Image>

For the full sample, see the Clip Region Sample.

Remarks

Elements outside the geometry will be visually clipped in the rendered layout. The geometry does not have to be rectangular.

Dependency Property Information
Identifier field ClipProperty
Metadata properties set to true None

Applies to

See also