DiagramLinkLayer

DiagramLinkLayer

public DiagramLinkLayer()

diagramLinkLayer = DiagramLinkLayer()

Initializes a new instance of the DiagramLinkLayer class.

Adapter

public IDiagramModelAdapter Adapter { get; set; }

value = diagramLinkLayer.Adapter
diagramLinkLayer.Adapter = value

Gets or sets the routed model adapter.

DrawnLinks

public IReadOnlyDictionary<ICompositionModelLink, IReadOnlyList<DiagramRoutePoint>> DrawnLinks { get; }

value = diagramLinkLayer.DrawnLinks

Gets the links this layer last drew, each with the polyline it drew for it.

Highlight

internal Control Highlight { get; }

value = diagramLinkLayer.Highlight

Gets the layer that draws, over the nodes, the links the pointer has brought out.

HoveredLink

public ICompositionModelLink HoveredLink { get; set; }

value = diagramLinkLayer.HoveredLink
diagramLinkLayer.HoveredLink = value

Gets or sets the currently hovered link.

PanOffset

public Point PanOffset { get; set; }

value = diagramLinkLayer.PanOffset
diagramLinkLayer.PanOffset = value

Gets or sets the current viewport translation.

Presenters

public IReadOnlyDictionary<string, DiagramNodePresenter> Presenters { get; set; }

value = diagramLinkLayer.Presenters
diagramLinkLayer.Presenters = value

Gets or sets node presenters used to locate sockets and obstacles.

Scale

public double Scale { get; set; }

value = diagramLinkLayer.Scale
diagramLinkLayer.Scale = value

Gets or sets the current viewport scale.

SelectedLinks

internal IReadOnlyCollection<ICompositionModelLink> SelectedLinks { get; set; }

value = diagramLinkLayer.SelectedLinks
diagramLinkLayer.SelectedLinks = value

Gets the links the surface holds selected.

GetLinksInside

internal IReadOnlyList<ICompositionModelLink> GetLinksInside(Rect area)

result = diagramLinkLayer.GetLinksInside(area)

Finds the links whose whole route lies inside a screen-space rectangle.

area

Screen-space rectangle.

返回值: The links inside.

HitTestLink

public ICompositionModelLink HitTestLink(Point point, double hitRadius)

result = diagramLinkLayer.HitTestLink(point, hitRadius)

Finds a link near a screen-space pointer position.

point

Pointer position.

hitRadius

Hit radius in logical pixels.

返回值: The nearest link, or .

InvalidateRoutes

public void InvalidateRoutes()

diagramLinkLayer.InvalidateRoutes()

Marks cached routes stale after diagram-space geometry changes.

Redraw

public void Redraw()

diagramLinkLayer.Redraw()

Draws the links again: those at rest and those the pointer has brought out.

Render

public override void Render(DrawingContext context)

diagramLinkLayer.Render(context)

RenderLinks

internal void RenderLinks(DrawingContext context, bool isBroughtOut)

diagramLinkLayer.RenderLinks(context, isBroughtOut)

Draws the links that are at rest, or those the pointer has brought out.

context

Where to draw.

isBroughtOut

Which of the two to draw.

RenderSelection

internal void RenderSelection(DrawingContext context)

diagramLinkLayer.RenderSelection(context)

Draws the mark of the selection along each selected link, as the WPF head adorns one.

context

Where to draw.

TryHitTestEndpoint

public bool TryHitTestEndpoint(Point point, ICompositionModelLink link, bool isFrom, double hitRadius)

result = diagramLinkLayer.TryHitTestEndpoint(point, link, isFrom, hitRadius)

Finds a routed link endpoint near a screen-space pointer position.

point

Pointer position.

link

Matched link.

isFrom

Whether the output endpoint was matched.

hitRadius

Scale-independent hit radius.

返回值: when an endpoint was matched.