Assembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
'Declaration Public Property ScaleY As Double 'Usage Dim instance As ScaleTransform Dim value As Double value = instance.ScaleY instance.ScaleY = value
/** @property */ public double get_ScaleY () /** @property */ public void set_ScaleY (double value)
Property ValueThe scale factor along the y-axis. The default value is 1.
Metadata properties set to true
Values between 0 and 1 decrease the height of the scaled object; values greater than 1 increase the height of the scaled object. A value of 1 indicates that the object is not scaled in the y-direction.
Negative values flip the scaled object vertically. Values between 0 and -1 flip the scale object and decrease its height. Values less than -1 flip the object and increase its height. A value of -1 flips the scaled object but does not change its vertical size.
For more information and for examples, see How to: Scale an Element and How to: Flip a UIElement Horizontally or Vertically).
This example shows how to use a ScaleTransform to scale an element.
Use the ScaleX and ScaleY properties to resize the element by the factor you specify. For example, a ScaleX value of 1.5 stretches the element to 150 percent of its original width. A ScaleY value of 0.5 shrinks the height of an element by 50 percent.
Use the CenterX and CenterY properties to specify the point that is the center of the scale operation. By default, a ScaleTransform is centered at the point (0,0). This has the effect of moving the element and also of making it appear larger, because when you apply a Transform, you change the coordinate space in which the object resides.
<!-- Scales a rectangle by 200% from a center of (0,0).--> <Rectangle Height="50" Width="50" Fill="#CCCCCCFF" Stroke="Blue" StrokeThickness="2" Canvas.Left="100" Canvas.Top="100"> <Rectangle.RenderTransform> <ScaleTransform CenterX="0" CenterY="0" ScaleX="2" ScaleY="2" /> </Rectangle.RenderTransform> </Rectangle>
<!-- Scales a rectangle by 200% from a center of (25,25).--> <Rectangle Height="50" Width="50" Fill="#CCCCCCFF" Canvas.Left="100" Canvas.Top="100" Stroke="Blue" StrokeThickness="2"> <Rectangle.RenderTransform> <ScaleTransform CenterX="25" CenterY="25" ScaleX="2" ScaleY="2" /> </Rectangle.RenderTransform> </Rectangle>
The following illustration shows the difference between the two ScaleTransform operations. The dotted line shows the size and position of the rectangle before scaling.
Two ScaleTransform operations with identical ScaleX and ScaleY values but different centers
For the complete sample, see 2-D Transforms Sample.
|How to: Flip a UIElement Horizontally or Vertically|| |
This example shows how to use a ScaleTransform to flip a UIElement horizontally or vertically. In this example, a Button control (a type of UIElement) is flipped by applying a ScaleTransform to its RenderTransform property.
|How to: Animate the Size of a FrameworkElement|
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.