ZoomDecorator Class

public class ZoomDecorator : Decorator

public ZoomDecorator()

public Point AnchorPoint { get; }

Property Value

Point:

The current anchor point of the view. The default value is 0,0.

public Point? CenterPoint { get; set; }

Property Value

Point?:

The current center point of the view. The default value is null.

public override UIElement Child { get; set; }

Property Value

UIElement

public Size ChildSize { get; }

Property Value

Size:

The size of the child element. The default value is 0,0.

public Point? DefaultCenterPoint { get; set; }

Property Value

Point?:

The default center point of the view. The default value is null.

public double DefaultZoomLevel { get; set; }

Property Value

double:

The default zoom level. The default value is 1.0.

public double HorizontalOffset { get; set; }

Property Value

double:

The current horizontal offset of the content. The default value is 0.0.

public Unit HorizontalScrollLineStep { get; set; }

Property Value

Unit:

The value used when incrementing and decrementing the horizontal offset by a line. The default value is 1 pixel.

public Unit HorizontalScrollPageStep { get; set; }

Property Value

Unit:

The value used when incrementing and decrementing the horizontal offset by a page. The default value is 100 percent of the viewport.

public bool IsVirtualSpaceEnabled { get; set; }

Property Value

bool:

true if virtual space is enabled, which allows all parts of the content to be centered in the view; otherwise false. The default value is false.

public double MaxZoomLevel { get; set; }

Property Value

double:

A percentage value indicating the maximum zoom level of the content. The default value is 10.0.

public double MinZoomLevel { get; set; }

Property Value

double:

A percentage value indicating the minimum zoom level of the content. The default value is 0.1.

public Duration PanAnimationDuration { get; set; }

Property Value

Duration:

The Duration to animate the panning from one location to the next. The default value is 150ms.

Remarks

Set to 0ms or Duration.Automatic to disable pan animation.

See Also

• ZoomLevel

public double VerticalOffset { get; set; }

Property Value

double:

The current vertical offset of the content. The default value is 0.0.

public Unit VerticalScrollLineStep { get; set; }

Property Value

Unit:

The value used when incrementing and decrementing the vertical offset by a line. The default value is 1 pixel.

public Unit VerticalScrollPageStep { get; set; }

Property Value

Unit:

The value used when incrementing and decrementing the vertical offset by a page. The default value is 100 percent of the viewport.

public Size ViewportSize { get; }

Property Value

Size:

The size of the viewport. The default value is 0,0.

public Duration ZoomAnimationDuration { get; set; }

Property Value

Duration:

The Duration to animate the scale from one zoom level to the next. The default value is 300ms.

Remarks

Set to 0ms or Duration.Automatic to disable zoom animation.

See Also

• ZoomLevel

public double ZoomLevel { get; set; }

Property Value

double:

A percentage value indicating the current zoom level of the content. The default value is double.NaN, which indicates that DefaultZoomLevel will be used.

public double ZoomLevelAnimated { get; }

Property Value

double:

A percentage value indicating the current animated zoom level of the content.

public DoubleCollection ZoomLevelStops { get; set; }

Property Value

DoubleCollection:

The possible zoom level stops when zooming in or out incrementally. The default value is null, which indicates that ZoomStep should be used.

public double ZoomStep { get; set; }

Property Value

double:

The value used when incrementing and decrementing the zoom level. The default value is 0.1.

protected override Size ArrangeOverride(Size finalSize)

Parameter	Type	Description
finalSize	Size	The final area within the parent that this element should use to arrange itself and its children.

Returns

Size:

The actual size used.

public void BeginUpdate()

public void CenterAndZoomInToPoint(Point? point)

Parameter	Type	Description
point	Point?	The point to center; otherwise null to use the current mouse position.

public void CenterAndZoomOutFromPoint(Point? point)

Parameter	Type	Description
point	Point?	The point to center; otherwise null to use the current mouse position.

public void CenterToPoint(Point? point)

Parameter	Type	Description
point	Point?	The point to center; otherwise null to use the current mouse position.

public void CenterView()

public void CenterView(Orientation orientation)

Parameter	Type	Description
orientation	Orientation	The orientation that should be centered.

public void EndUpdate()

public void EndUpdate(bool animate)

Parameter	Type	Description
animate	bool	if set to true then any changes can be animated.

public void LineDown()

public void LineDown(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the line step by.

public void LineLeft()

public void LineLeft(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the line step by.

public void LineRight()

public void LineRight(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the line step by.

public void LineUp()

public void LineUp(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the line step by.

public Rect MakeVisible(Visual visual, Rect rectangle)

Parameter	Type	Description
visual	Visual	A Visual that becomes visible.
rectangle	Rect	A bounding rectangle that identifies the coordinate space to make visible.

Returns

Rect:

A System.Windows.Rect that is visible.

protected override Size MeasureOverride(Size availableSize)

Parameter	Type	Description
availableSize	Size	The available size that this element can give to child elements. Infinity can be specified as a value to indicate that the element will size to whatever content is available.

Returns

Size:

The size that this element determines it needs during layout, based on its calculations of child element sizes.

public void PageDown()

public void PageDown(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the page step by.

public void PageLeft()

public void PageLeft(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the page step by.

public void PageRight()

public void PageRight(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the page step by.

public void PageUp()

public void PageUp(double factor)

Parameter	Type	Description
factor	double	The factor to multiply the page step by.

public void Pan(double xOffset, double yOffset)

Parameter	Type	Description
xOffset	double	The offset to pan along the X-axis.
yOffset	double	The offset to pan along the Y-axis.

public void ResetView()

public void ZoomIn()

public void ZoomInToPoint(Point? point)

Parameter	Type	Description
point	Point?	The point to anchor; otherwise null to use the current mouse position.

public void ZoomOut()

public void ZoomOutFromPoint(Point? point)

Parameter	Type	Description
point	Point?	The point to anchor; otherwise null to use the current mouse position.

public void ZoomToFit()

public void ZoomToFit(bool centerView)

Parameter	Type	Description
centerView	bool	if set to true the view will be centered.

public void ZoomToFit(Orientation orientation)

Parameter	Type	Description
orientation	Orientation	The orientation that should be fitted.

public void ZoomToFit(Orientation orientation, bool centerView)

Parameter	Type	Description
orientation	Orientation	The orientation that should be fitted.
centerView	bool	if set to true the view will be centered.

public static readonly DependencyProperty AnchorPointProperty

public static readonly DependencyProperty CenterPointProperty

public static readonly DependencyProperty ChildSizeProperty

public static readonly DependencyProperty DefaultCenterPointProperty

public static readonly DependencyProperty DefaultZoomLevelProperty

public static readonly DependencyProperty HorizontalScrollLineStepProperty

public static readonly DependencyProperty HorizontalScrollPageStepProperty

public static readonly DependencyProperty IsVirtualSpaceEnabledProperty

public static readonly DependencyProperty MaxZoomLevelProperty

public static readonly DependencyProperty MinZoomLevelProperty

public static readonly DependencyProperty PanAnimationDurationProperty

public static readonly DependencyProperty VerticalScrollLineStepProperty

public static readonly DependencyProperty VerticalScrollPageStepProperty

public static readonly DependencyProperty ViewportSizeProperty

public static readonly DependencyProperty ZoomAnimationDurationProperty

public static readonly DependencyProperty ZoomLevelAnimatedProperty

public static readonly DependencyProperty ZoomLevelProperty

public static readonly DependencyProperty ZoomLevelStopsProperty

public static readonly DependencyProperty ZoomStepProperty