C# Class Smrf.NodeXL.Visualization.Wpf.VertexDrawer

Draws a graph's vertices.

This class is responsible for drawing a graph's vertices. The default vertex appearance is determined by this class's properties. The appearance of an individual vertex can be overridden by adding appropriate metadata to the vertex. The following metadata keys are honored: ReservedMetadataKeys.Visibility ReservedMetadataKeys.IsSelected ReservedMetadataKeys.PerColor ReservedMetadataKeys.PerAlpha ReservedMetadataKeys.PerVertexShape ReservedMetadataKeys.PerVertexRadius ReservedMetadataKeys.PerVertexLabel ReservedMetadataKeys.PerVertexLabelFillColor ReservedMetadataKeys.PerVertexLabelPosition ReservedMetadataKeys.PerVertexImage

If VertexAndEdgeDrawerBase.UseSelection is true, a vertex is drawn using VertexAndEdgeDrawerBase.Color or , depending on whether the vertex has been marked as selected. If is false, is used regardless of whether the vertex has been marked as selected.

If a vertex has the shape VertexShape.Label and has the ReservedMetadataKeys.PerVertexLabel key, the vertex is drawn as a rectangle containing the text specified by the key's value. The default color of the text and the rectangle's outline is , but can be overridden with the ReservedMetadataKeys.PerColor key. The default fill color of the rectangle is LabelFillColor, but can be overridden with the ReservedMetadataKeys.PerVertexLabelFillColor key.

If a vertex has a shape other than VertexShape.Label and has the ReservedMetadataKeys.PerVertexLabel key, the vertex is drawn as the specified shape, and the text specified by the key's value is drawn next to the vertex as an annotation at the position determined by .

If a vertex has the shape VertexShape.Image and has the key, the vertex is drawn as the image specified by the key's value.

The values of the ReservedMetadataKeys.PerColor and keys can be of type System.Windows.Media.Color or System.Drawing.Color.

When drawing the graph, call TryDrawVertex for each of the graph's vertices.

Inheritance: VertexAndEdgeDrawerBase

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Public Properties

Property	Type	Description
MaximumRadius	Double
MaximumRelativeOuterGlowSize	Double
MinimumRadius	Double
MinimumRelativeOuterGlowSize	Double

Protected Properties

Property	Type	Description
m_bLabelWrapText	System.Boolean
m_bLimitVerticesToBounds	System.Boolean
m_btBackgroundAlpha	Byte
m_dLabelWrapMaxTextWidth	Double
m_dRadius	Double
m_dRelativeOuterGlowSize	Double
m_eEffect	VertexEffect
m_eLabelPosition	VertexLabelPosition
m_eShape	VertexShape
m_oLabelFillColor	Color

Public Methods

Method	Description
AssertValid ( ) : void
TryDrawVertex ( IVertex vertex, GraphDrawingContext graphDrawingContext, VertexDrawingHistory &vertexDrawingHistory ) : System.Boolean
VertexDrawer ( ) : System	Initializes a new instance of the VertexDrawer class.

Protected Methods

Method	Description
CheckDrawVertexArguments ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext ) : void
CreateFormattedTextWithWrap ( String sText, Color oColor, Double dFontSize ) : System.Windows.Media.FormattedText
DrawImageShape ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sAnnotation, System.Windows.Media.ImageSource oImageSource, VertexLabelDrawer oVertexLabelDrawer, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
DrawLabelShape ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sLabel, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
DrawSimpleShape ( IVertex oVertex, VertexShape eShape, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sAnnotation, VertexLabelDrawer oVertexLabelDrawer, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
GetDropShadowEffect ( Color oColor, Double dShadowDepth, Double dBlurRadius, Double dOpacity ) : System.Windows.Media.Effects.DropShadowEffect
GetEffectForDropShadow ( GraphDrawingContext oGraphDrawingContext, Double dShadowDepth, Double dOpacity ) : System.Windows.Media.Effects.Effect
GetEffectForOuterGlow ( Color oColor, Double dGlowSize, Double dOpacity ) : System.Windows.Media.Effects.Effect
GetLabelFontSize ( IVertex oVertex ) : Double
GetLabelPadding ( Double dLabelFontSize ) : Double
GetRadius ( IVertex oVertex ) : Double
GetRectangleEffect ( GraphDrawingContext oGraphDrawingContext, Color oColor ) : System.Windows.Media.Effects.Effect
GetShape ( IVertex oVertex ) : VertexShape
GetSimpleShapeEffect ( GraphDrawingContext oGraphDrawingContext, Double dRadius, Color oColor ) : System.Windows.Media.Effects.Effect
GetVertexLocation ( IVertex oVertex ) : Point
GetVertexRectangle ( Point oLocation, Double dWidth, Double dHeight ) : Rect
MoveVertexIfNecessary ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager, Rect &oVertexBounds ) : void

Method Details

AssertValid() public method

public AssertValid ( ) : void
return	void

CheckDrawVertexArguments() protected method

protected CheckDrawVertexArguments ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext ) : void
oVertex	IVertex
oGraphDrawingContext	GraphDrawingContext
return	void

CreateFormattedTextWithWrap() protected method

protected CreateFormattedTextWithWrap ( String sText, Color oColor, Double dFontSize ) : System.Windows.Media.FormattedText
sText	String
oColor	Color
dFontSize	Double
return	System.Windows.Media.FormattedText

DrawImageShape() protected method

protected DrawImageShape ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sAnnotation, System.Windows.Media.ImageSource oImageSource, VertexLabelDrawer oVertexLabelDrawer, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
oVertex	IVertex
oGraphDrawingContext	GraphDrawingContext
oDrawingContext	System.Windows.Media.DrawingContext
oDrawingVisual	Smrf.WpfGraphicsLib.DrawingVisualPlus
eVisibility	VisibilityKeyValue
bDrawAsSelected	System.Boolean
sAnnotation	String
oImageSource	System.Windows.Media.ImageSource
oVertexLabelDrawer	VertexLabelDrawer
oCollapsedGroupDrawingManager	CollapsedGroupDrawingManager
return	VertexDrawingHistory

DrawLabelShape() protected method

protected DrawLabelShape ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sLabel, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
oVertex	IVertex
oGraphDrawingContext	GraphDrawingContext
oDrawingContext	System.Windows.Media.DrawingContext
oDrawingVisual	Smrf.WpfGraphicsLib.DrawingVisualPlus
eVisibility	VisibilityKeyValue
bDrawAsSelected	System.Boolean
sLabel	String
oCollapsedGroupDrawingManager	CollapsedGroupDrawingManager
return	VertexDrawingHistory

DrawSimpleShape() protected method

protected DrawSimpleShape ( IVertex oVertex, VertexShape eShape, GraphDrawingContext oGraphDrawingContext, System.Windows.Media.DrawingContext oDrawingContext, DrawingVisualPlus oDrawingVisual, VisibilityKeyValue eVisibility, System.Boolean bDrawAsSelected, String sAnnotation, VertexLabelDrawer oVertexLabelDrawer, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager ) : VertexDrawingHistory
oVertex	IVertex
eShape	VertexShape
oGraphDrawingContext	GraphDrawingContext
oDrawingContext	System.Windows.Media.DrawingContext
oDrawingVisual	Smrf.WpfGraphicsLib.DrawingVisualPlus
eVisibility	VisibilityKeyValue
bDrawAsSelected	System.Boolean
sAnnotation	String
oVertexLabelDrawer	VertexLabelDrawer
oCollapsedGroupDrawingManager	CollapsedGroupDrawingManager
return	VertexDrawingHistory

GetDropShadowEffect() protected method

protected GetDropShadowEffect ( Color oColor, Double dShadowDepth, Double dBlurRadius, Double dOpacity ) : System.Windows.Media.Effects.DropShadowEffect
oColor	Color
dShadowDepth	Double
dBlurRadius	Double
dOpacity	Double
return	System.Windows.Media.Effects.DropShadowEffect

GetEffectForDropShadow() protected method

protected GetEffectForDropShadow ( GraphDrawingContext oGraphDrawingContext, Double dShadowDepth, Double dOpacity ) : System.Windows.Media.Effects.Effect
oGraphDrawingContext	GraphDrawingContext
dShadowDepth	Double
dOpacity	Double
return	System.Windows.Media.Effects.Effect

GetEffectForOuterGlow() protected method

protected GetEffectForOuterGlow ( Color oColor, Double dGlowSize, Double dOpacity ) : System.Windows.Media.Effects.Effect
oColor	Color
dGlowSize	Double
dOpacity	Double
return	System.Windows.Media.Effects.Effect

GetLabelFontSize() protected method

protected GetLabelFontSize ( IVertex oVertex ) : Double
oVertex	IVertex
return	Double

GetLabelPadding() protected method

protected GetLabelPadding ( Double dLabelFontSize ) : Double
dLabelFontSize	Double
return	Double

GetRadius() protected method

protected GetRadius ( IVertex oVertex ) : Double
oVertex	IVertex
return	Double

GetRectangleEffect() protected method

protected GetRectangleEffect ( GraphDrawingContext oGraphDrawingContext, Color oColor ) : System.Windows.Media.Effects.Effect
oGraphDrawingContext	GraphDrawingContext
oColor	Color
return	System.Windows.Media.Effects.Effect

GetShape() protected method

protected GetShape ( IVertex oVertex ) : VertexShape
oVertex	IVertex
return	VertexShape

GetSimpleShapeEffect() protected method

protected GetSimpleShapeEffect ( GraphDrawingContext oGraphDrawingContext, Double dRadius, Color oColor ) : System.Windows.Media.Effects.Effect
oGraphDrawingContext	GraphDrawingContext
dRadius	Double
oColor	Color
return	System.Windows.Media.Effects.Effect

GetVertexLocation() protected method

protected GetVertexLocation ( IVertex oVertex ) : Point
oVertex	IVertex
return	Point

GetVertexRectangle() protected method

protected GetVertexRectangle ( Point oLocation, Double dWidth, Double dHeight ) : Rect
oLocation	Point
dWidth	Double
dHeight	Double
return	System.Windows.Rect

MoveVertexIfNecessary() protected method

protected MoveVertexIfNecessary ( IVertex oVertex, GraphDrawingContext oGraphDrawingContext, CollapsedGroupDrawingManager oCollapsedGroupDrawingManager, Rect &oVertexBounds ) : void
oVertex	IVertex
oGraphDrawingContext	GraphDrawingContext
oCollapsedGroupDrawingManager	CollapsedGroupDrawingManager
oVertexBounds	System.Windows.Rect
return	void

TryDrawVertex() public method

public TryDrawVertex ( IVertex vertex, GraphDrawingContext graphDrawingContext, VertexDrawingHistory &vertexDrawingHistory ) : System.Boolean
vertex	IVertex
graphDrawingContext	GraphDrawingContext
vertexDrawingHistory	VertexDrawingHistory
return	System.Boolean

VertexDrawer() public method

Initializes a new instance of the VertexDrawer class.

public VertexDrawer ( ) : System
return	System

Property Details

MaximumRadius public_oe static_oe property

Maximum value of the Radius property. The value is 549.0.

public static Double MaximumRadius
return	Double

MaximumRelativeOuterGlowSize public_oe static_oe property

Maximum value of the RelativeOuterGlowSize property. The value is 10.0.

public static Double MaximumRelativeOuterGlowSize
return	Double

MinimumRadius public_oe static_oe property

Minimum value of the Radius property. The value is 0.1.

public static Double MinimumRadius
return	Double

MinimumRelativeOuterGlowSize public_oe static_oe property

Minimum value of the RelativeOuterGlowSize property. The value is 1.0.

public static Double MinimumRelativeOuterGlowSize
return	Double

m_bLabelWrapText protected_oe property

protected Boolean,System m_bLabelWrapText
return	System.Boolean

m_bLimitVerticesToBounds protected_oe property

protected Boolean,System m_bLimitVerticesToBounds
return	System.Boolean

m_btBackgroundAlpha protected_oe property

protected Byte m_btBackgroundAlpha
return	Byte

m_dLabelWrapMaxTextWidth protected_oe property

protected Double m_dLabelWrapMaxTextWidth
return	Double

m_dRadius protected_oe property

protected Double m_dRadius
return	Double

m_dRelativeOuterGlowSize protected_oe property

protected Double m_dRelativeOuterGlowSize
return	Double

m_eEffect protected_oe property

protected VertexEffect m_eEffect
return	VertexEffect

m_eLabelPosition protected_oe property

protected VertexLabelPosition m_eLabelPosition
return	VertexLabelPosition

m_eShape protected_oe property

protected VertexShape m_eShape
return	VertexShape

m_oLabelFillColor protected_oe property

protected Color m_oLabelFillColor
return	Color