Area2DOverlay Class Reference

Interaction logic for Area2DOverlay.xaml More...

Inherits NonClippingImageOverlay.

Public Member Functions
	Area2DOverlay ()
	Constructor.
	Area2DOverlay (Point p0, Point p1, Point p2)
	Constructor. More...
Public Member Functions inherited from NonClippingImageOverlay
	NonClippingImageOverlay ()
	default ctor
Public Member Functions inherited from ImageOverlay
	ImageOverlay ()
	Creates an image overlay object.
Public Member Functions inherited from OverlayBase
	OverlayBase ()
	Creates an overlay object.

Static Public Attributes
static readonly DependencyProperty	P0XProperty
	backing store
static readonly DependencyProperty	P0YProperty
	backing store
static readonly DependencyProperty	P1XProperty
	backing store
static readonly DependencyProperty	P1YProperty
	backing store
static readonly DependencyProperty	P2XProperty
	backing store
static readonly DependencyProperty	P2YProperty
	backing store
static readonly DependencyProperty	P3XProperty = P3XPropertyKey.DependencyProperty
	Backing store.
static readonly DependencyProperty	P3YProperty = P3YPropertyKey.DependencyProperty
	Backing store.
static readonly DependencyProperty	ArrowWidthProperty
	backing store
static readonly DependencyProperty	ArrowLengthProperty
	backing store
static readonly DependencyProperty	StrokeProperty
	Backing store.
static readonly DependencyProperty	StrokeThicknessProperty
	backing store
Static Public Attributes inherited from ImageOverlay
static readonly DependencyProperty	AutoScaleContentProperty
	Backing store for the AutoScaleContent property. More...
static readonly DependencyProperty	CoordinatesProperty
	Dependency property object.
static readonly DependencyProperty	NonScaledTransformProperty
	Backing store for the NonScaledTransform property. More...
static readonly DependencyProperty	PixelCoordinateSystemProperty
	Backing store for the PixelCoordinateSystem property. More...
static readonly DependencyProperty	ScaledTransformProperty
	Backing store for the ScaledTransform property. More...
static readonly DependencyProperty	StandardLineWidthProperty
	Backing store.
static readonly DependencyProperty	EffectiveLineWidthProperty = EffectiveLineWidthPropertyKey.DependencyProperty
	Backing store.
Static Public Attributes inherited from OverlayBase
static readonly DependencyProperty	ActualZoomFactorProperty = ActualZoomFactorKey.DependencyProperty
	Backing store for the ActualZoomFactor property.
static readonly DependencyProperty	InverseActualZoomFactorProperty = InverseActualZoomFactorPropertyKey.DependencyProperty
	Backing store.
static readonly DependencyProperty	OverlayHeightProperty
	Backing store for the OverlayHeight property
static readonly DependencyProperty	OverlayWidthProperty
	Backing store for the OverlayWidth property.
static readonly DependencyProperty	OverlayXProperty
	Backing store for the OverlayX property.
static readonly DependencyProperty	OverlayYProperty
	Backing store for the OverlayY property.
static readonly DependencyProperty	ParentDisplayCanvasProperty
	Backing store for the readonly ParentDisplayCanvas property.
static readonly DependencyProperty	BottomProperty
	Backing store for the Bottom property.
static readonly DependencyProperty	LeftProperty
	Backing store for the Left property.
static readonly DependencyProperty	LengthUnitProperty
	Backing store for the LengthUnit property.
static readonly DependencyProperty	RightProperty
	Backing store for the Right property.
static readonly DependencyProperty	TopProperty
	Backing store for the Top property.

Protected Member Functions
override void	OnParentDisplayCanvasChanged (DisplayCanvas oldCanvas, DisplayCanvas newCanvas)
	React to changes in the canvas... More...
Protected Member Functions inherited from NonClippingImageOverlay
override System.Windows.Media.Geometry	GetLayoutClip (Size layoutSlotSize)
	Prevent clipping at the edge of the user control (that way we can implement dragging of the overlay more easily). More...
virtual double	CoerceOverlayWidth (double value)
	Inheritors must override this to specify the effective overlay width (which should be total render extent regardless of clipping considerations). More...
virtual double	CoerceOverlayHeight (double value)
	Inheritors must override this to specify the effective overlay width (which should be total render extent regardless of clipping considerations). More...
virtual void	OnParentDisplayCanvasChanged (DisplayCanvas oldCanvas, DisplayCanvas newCanvas)
	Event raiser. More...

Static Protected Member Functions
static new void	OnActualZoomFactorChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
	React to changes in the zoom factor on the displaying canvas. More...
static void	OnP0XChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
	react to changes... More...
static void	OnP0YChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
	react to changes... More...
static void	OnP1Changed (DependencyObject d, DependencyPropertyChangedEventArgs e)
	react to changes More...
static void	OnP2Changed (DependencyObject d, DependencyPropertyChangedEventArgs e)
	react to changes More...
Static Protected Member Functions inherited from ImageOverlay
static new void	OnActualZoomFactorChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
	React to changes in the zoom factor. More...
static object	CoerceCoordinate (DependencyObject d, object baseValue)
	Ensures correct location handling for (sub)pixel coordinate mode. More...
Static Protected Member Functions inherited from OverlayBase
static void	OnActualZoomFactorChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
	React to property changes. More...

Static Protected Attributes
static readonly DependencyPropertyKey	P3XPropertyKey
	Backing store key.
static readonly DependencyPropertyKey	P3YPropertyKey
	Backing store key.
static readonly DependencyProperty	EffectiveArrowWidthProperty = EffectiveArrowWidthPropertyKey.DependencyProperty
	Backing store.
static readonly DependencyProperty	EffectiveArrowLengthProperty = EffectiveArrowLengthPropertyKey.DependencyProperty
	Backing store.
Static Protected Attributes inherited from ImageOverlay
const CoordinateMode	CoordinatesDefault = CoordinateMode.Pixel
	Default for the property.
static readonly DependencyPropertyKey	EffectiveLineWidthPropertyKey
	Backing store key.
Static Protected Attributes inherited from OverlayBase
static readonly DependencyPropertyKey	ActualZoomFactorKey
	The Key for readonly ActualZoomFactor property.
static readonly DependencyPropertyKey	InverseActualZoomFactorPropertyKey
	Backing store key.

Properties
Area2D	Selection [get]
	Current selection.
double	P0X [get, set]
	Point P0, X coordinate
double	P0Y [get, set]
	Point P0, Y coordinate.
double	P1X [get, set]
	Point P1, X coordinate.
double	P1Y [get, set]
	Point P1, Y coordinate.
double	P2X [get, set]
	Point P2, X coordinate.
double	P2Y [get, set]
	Point P2, Y coordinate.
double	P3X [get, protected set]
	P3, x coordinate (read only...)
double	P3Y [get, protected set]
	P3, y coordinate (read only...)
double	ArrowWidth [get, set]
	Width of the arrows (and the diameter of the ellipse...)
double	ArrowLength [get, set]
	Length of the Arrow heads
double	EffectiveArrowWidth [get]
	The width of the arrow in image pixels (subject to change depending on the actual zoom factor) for painting purposes.
double	EffectiveArrowLength [get]
	The length of the arrow in image pixels (subject to change depending on the actual zoom factor) for painting purposes.
Brush	Stroke [get, set]
	Stroke being used for painting.
double	StrokeThickness [get, set]
	Thickness at which to paint the strokes.
Properties inherited from ImageOverlay
AutoScaleContent	AutoScaleContent [get, set]
	Defines whether or not the overlays in the canvas are automatically scaled according to the zoom factor.
CoordinateMode	Coordinates [get, set]
	Coordinate system usage (pixel or sub pixel).
Transform	NonScaledTransform [get]
	Gets the the transform that is used to undo automatic scaling of content according to the OverlayBase.ActualZoomFactor. More...
PixelCoordinateSystem	PixelCoordinateSystem [get, set]
	Defines the location of a point in a pixel. More...
Transform	ScaledTransform [get]
	Gets the the transform that is used to scale content according to the OverlayBase.ActualZoomFactor. More...
double	StandardLineWidth [get, set]
	The standard line width is the width at which "normal" lines should be painted in the overlay. It is mostly a vehicle for calculating the effective line width and for binding purposes.
double	EffectiveLineWidth [get, protected set]
	The effective line width is the line width at which to paint in order to make lines with the width defined in the property StandardLineWidth appear as if they were not zoomed.
Properties inherited from OverlayBase
double	ActualZoomFactor [get]
	Gets the actual zoom factor of the display canvas this overlay is on.
double	InverseActualZoomFactor [get, protected set]
	Gets the inverse value of the actual Zoom factor (useful for painting items that are the same size regardless of zoom factor).
double	OverlayHeight [get, set]
	Gets/sets the height of the overlay in the current length unit.
double	OverlayWidth [get, set]
	Gets/sets the width of the overlay in the current length unit.
double	OverlayX [get, set]
	Gets/sets the overlay x coordinate in the current length unit.
double	OverlayY [get, set]
	Gets/set the overlay Y in the current length unit.
DisplayCanvas	ParentDisplayCanvas [get, set]
	The DisplayCanvas this overlay is child of. More...
double	Bottom [get, set]
	Layouts a child from the bottom. More...
double	Left [get, set]
	Layouts a child from the left. More...
LengthUnit	LengthUnit [get]
	Defines whether the layout properties are measured in image pixels or in device independent pixels as displayed by the canvas.
double	Right [get, set]
	Layouts a child from the right. More...
double	Top [get, set]
	Layouts a child from the top. More...

Additional Inherited Members
Events inherited from ImageOverlay
EventHandler< ImageSourceChangedEventArgs >	ImageSourceChanged
	Event that is fired when the parent DisplayCanvas' actual zoom factor is changed.
Events inherited from OverlayBase
EventHandler< PropertyValueChangedEventArgs< DisplayCanvas > >	ParentDisplayCanvasChanged
	Event that is fired when the parent DisplayCanvas is changed.
EventHandler< DisplayZoomEventArgs >	ActualZoomFactorChanged
	Event that is fired when the parent DisplayCanvas' actual zoom factor is changed.

Detailed Description

Interaction logic for Area2DOverlay.xaml

Constructor & Destructor Documentation

Area2DOverlay()

Area2DOverlay	(	Point	p0,
		Point	p1,
		Point	p2
	)

Constructor.

Parameters

p0	Point P0.
p1	Point P1.
p2	Point P2.

Member Function Documentation

OnActualZoomFactorChanged()

static new void OnActualZoomFactorChanged ( DependencyObject  d, DependencyPropertyChangedEventArgs  e  )

staticprotected

React to changes in the zoom factor on the displaying canvas.

Parameters

d	Dependency object on which the change occurred.
e	Event arguments.

OnP0XChanged()

static void OnP0XChanged ( DependencyObject  d, DependencyPropertyChangedEventArgs  e  )

staticprotected

react to changes...

Parameters

d	Dependency object on which the change occurred.
e	Event arguments.

OnP0YChanged()

static void OnP0YChanged ( DependencyObject  d, DependencyPropertyChangedEventArgs  e  )

staticprotected

react to changes...

Parameters

d	Dependency object on which the change occurred.
e	Event arguments.

OnP1Changed()

static void OnP1Changed ( DependencyObject  d, DependencyPropertyChangedEventArgs  e  )

staticprotected

react to changes

Parameters

d	Dependency object on which the change occurred.
e	Event arguments.

OnP2Changed()

static void OnP2Changed ( DependencyObject  d, DependencyPropertyChangedEventArgs  e  )

staticprotected

react to changes

Parameters

d	Dependency object on which the change occurred.
e	Event arguments.

OnParentDisplayCanvasChanged()

override void OnParentDisplayCanvasChanged ( DisplayCanvas  oldCanvas, DisplayCanvas  newCanvas  )

protectedvirtual

React to changes in the canvas...

Parameters

oldCanvas	Canvas on which the overlay was hitherto located.
newCanvas	Canvas on which the overlay will now "live".

Reimplemented from OverlayBase.