bitreevis

type BiNode interface {
	FieldHolder
	GetLeftChild() BiNode
	GetRightChild() BiNode
}

type FieldHolder interface {
	GetField() string
}

type PaintableBiNode interface {
	BiNode

	// GetColor returns a color string for this node.
	GetColor() string
}

type PlaceableNode struct {
	Parent *PlaceableNode
	Left   *PlaceableNode
	Right  *PlaceableNode
	X      float32
	Y      float32
	Offset float32
	Thread bool
	Field  string
	Color  string
}

type RenderOption struct {
	// BackgroundColor specifies the global background color of the whole graphic.
	BackgroundColor string
	// BackgroundColor specifies the horizontal padding of the graphic on one size.
	HorizontalPadding int
	// BackgroundColor specifies the vertical padding of the graphic on one size.
	VerticalPadding int

	// SiblingSeparation specifies the minimum gap between two sibling nodes.
	SiblingSeparation int
	// LevelSeparation specifies the gap between two different levels.
	LevelSeparation int

	// NodeRadius specifies the radius of node.
	NodeRadius int
	// NodeColor specifies the color of nodes.
	NodeColor string
	// NodeColor specifies the color of leaf nodes, if not specified, NodeColor is used.
	NodeLeafColor string
	// NodeStrokeColor specifies the stroke color of nodes.
	NodeStrokeColor string
	// NodeStrokeWidth specifies the stroke-width of nodes.
	NodeStrokeWidth int
	// NodeFieldTextSize specifies the font size inside of node.
	NodeFieldTextSize int
	// NodeFieldTextColor specifies the color of font inside of node.
	NodeFieldTextColor string

	// EdgeLineWidth specifies the width of edges which connects nodes.
	EdgeLineWidth int
	// EdgeLineWidth specifies the color of edges which connects nodes.
	EdgeLineColor string
	// EdgeWithArrow specifies whether to use arrow at the end of edge
	EdgeWithArrow bool
	// EdgeArrowSize specifies the arrow size of edge
	EdgeArrowSize int
}

type RenderResult interface {
	// GetContent return an io.Reader which can be used to access the rendered data.
	GetContent() io.Reader

	// Save helps save the rendered data into a given file.
	Save(string) error

	// Error returns the error occurred during rendering. If no error occurs, it returns nil.
	Error() error
}

type Renderer interface {
	Render(*PlaceableNode, RenderOption) RenderResult
}

type SizeLimitStat struct {
	MinX float32
	MaxX float32
	MinY float32
	MaxY float32
}

type SvgRenderResult struct {
	// contains filtered or unexported fields
}

type SvgRenderer struct {
	Canvas svg.SVG
	// contains filtered or unexported fields
}