graph

type GraphEdge struct {
	widget.BaseWidget

	Graph *GraphWidget

	EdgeColor color.Color

	Width float32

	Origin *GraphNode
	Target *GraphNode

	Directed bool
}

type GraphNode struct {
	widget.BaseWidget

	Graph *GraphWidget

	// InnerSize stores size that the inner object should have, may not
	// be respected if not large enough for the object.
	InnerSize fyne.Size

	// InnerObject is the canvas object that should be drawn inside of
	// the graph node.
	InnerObject fyne.CanvasObject

	// Padding is the distance between the inner object's drawing area
	// and the box.
	Padding int

	// BoxStrokeWidth is the stroke width of the box which delineates the
	// node. Defaults to 1.
	BoxStrokeWidth float32

	// BoxFill is the fill color of the node, the inner object will be
	// drawn on top of this. Defaults to the theme.BackgroundColor().
	BoxFillColor color.Color

	// BoxStrokeColor is the stroke color of the node rectangle. Defaults
	// to theme.TextColor().
	BoxStrokeColor color.Color

	// HandleColor is the color of node handle.
	HandleColor color.Color

	// HandleStrokeWidth is the stroke width of the node handle, defaults
	// to 3.
	HandleStroke float32
}

type GraphWidget struct {
	widget.BaseWidget

	Offset fyne.Position

	// DesiredSize specifies the size which the graph widget should take
	// up, defaults to 800 x 600
	DesiredSize fyne.Size

	Nodes map[string]*GraphNode
	Edges map[string]*GraphEdge
}