Table of Contents

Class MouseDragElementBehavior

Namespace
HeBianGu.Base.WpfBase
Assembly
HeBianGu.Base.WpfBase.dll

Repositions the attached element in response to mouse drag gestures on the element.

public class MouseDragElementBehavior : Behavior<FrameworkElement>, IAnimatable, IAttachedObject
Inheritance
MouseDragElementBehavior
Implements
Derived
Inherited Members
Extension Methods

Fields

ConstrainToParentBoundsProperty

Dependency property for the ConstrainToParentBounds property. If true, the dragged element will be constrained to stay within the bounds of its parent container.

public static readonly DependencyProperty ConstrainToParentBoundsProperty

Field Value

DependencyProperty

ParentElementProperty 

public static readonly DependencyProperty ParentElementProperty

Field Value

DependencyProperty

XProperty

Dependency property for the X position of the dragged element, relative to the left of the root element.

public static readonly DependencyProperty XProperty

Field Value

DependencyProperty

YProperty

Dependency property for the Y position of the dragged element, relative to the top of the root element.

public static readonly DependencyProperty YProperty

Field Value

DependencyProperty

Properties

ConstrainToParentBounds

Gets or sets a value indicating whether the dragged element is constrained to stay within the bounds of its parent container. This is a dependency property.

public bool ConstrainToParentBounds { get; set; }

Property Value

bool

True if the dragged element should be constrained to its parents bounds; otherwise, False.

ParentElement

Gets the parent element of the associated object.

public FrameworkElement ParentElement { get; set; }

Property Value

FrameworkElement

The parent element of the associated object.

X

Gets or sets the X position of the dragged element, relative to the left of the root element. This is a dependency property.

public double X { get; set; }

Property Value

double

Y

Gets or sets the Y position of the dragged element, relative to the top of the root element. This is a dependency property.

public double Y { get; set; }

Property Value

double

Methods

AfterDragging() 

protected virtual void AfterDragging()

ApplyTranslationTransform(double, double)

Applies the given translation to the RenderTransform of the associated element.

protected virtual void ApplyTranslationTransform(double x, double y)

Parameters

x double

The X component of the translation in parent coordinates.

y double

The Y component of the translation in parent coordinates.

BeforeDragging() 

protected virtual void BeforeDragging()

OnAttached()

Called after the behavior is attached to an AssociatedObject.

protected override void OnAttached()

Remarks

Override this to hook up functionality to the AssociatedObject.

OnDetaching()

Called when the behavior is getting detached from its AssociatedObject, but before it has actually occurred.

protected override void OnDetaching()

Remarks

Override this to unhook functionality from the AssociatedObject.

OnMouseLeftButtonDown(object, MouseButtonEventArgs) 

protected void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)

Parameters

sender object
e MouseButtonEventArgs

Events

DragBegun

Occurs when a drag gesture is initiated.

public event MouseEventHandler DragBegun

Event Type

MouseEventHandler

DragFinished

Occurs when a drag gesture is finished.

public event MouseEventHandler DragFinished

Event Type

MouseEventHandler

Dragging

Occurs when a drag gesture update is processed.

public event MouseEventHandler Dragging

Event Type

MouseEventHandler
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