LineShapeUtil • tldraw Docs

Table of contents

migrations
props
type
editor
options
Properties
Methods

Extends ShapeUtil<TLLineShape>.

class LineShapeUtil extends ShapeUtil<TLLineShape> {}

Constructor

from ShapeUtil

Constructs a new instance of the ShapeUtil class

Parameters

Name	Description
`editor`	`Editor`

Properties

migrations

static

static migrations: import('@tldraw/editor').TLPropsMigrations

props

static

static props: import('@tldraw/editor').RecordProps<TLLineShape>

type

static

static type: 'line'

editor

from ShapeUtil

editor: Editor

options

from ShapeUtil

Options for this shape util. If you're implementing a custom shape util, you can override this to provide customization options for your shape. If using an existing shape util, you can customizing this by calling ShapeUtil.configure.

options: {}

Methods

configure()

static

from ShapeUtil

Configure this shape utils options.

static configure<T extends TLShapeUtilConstructor<any, any>>(
  this: T,
  options: T extends new (...args: any[]) => {
    options: infer Options
  }
    ? Partial<Options>
    : never
): T

Parameters

Name	Description
`this`	`T`
`options`	`T extends new (...args: any[]) => { options: infer Options } ? Partial<Options> : never`

Returns

canBeLaidOut()

from ShapeUtil

Whether the shape can participate in layout functions such as alignment or distribution.

canBeLaidOut(_shape: Shape, _info: TLShapeUtilCanBeLaidOutOpts): boolean

Parameters

Name	Description
`_shape`	`Shape`
`_info`	`TLShapeUtilCanBeLaidOutOpts`

Returns

boolean

canBind()

from ShapeUtil

Whether the shape can be bound to. See TLShapeUtilCanBindOpts for details.

canBind(_opts: TLShapeUtilCanBindOpts): boolean

Parameters

Name	Description
`_opts`	`TLShapeUtilCanBindOpts`

Returns

boolean

canCrop()

from ShapeUtil

Whether the shape can be cropped.

canCrop(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canEdit()

from ShapeUtil

Whether the shape can be double clicked to edit.

canEdit(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canEditInReadonly()

from ShapeUtil

Whether the shape can be edited in read-only mode.

canEditInReadonly(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canReceiveNewChildrenOfType()

from ShapeUtil

Get whether the shape can receive children of a given type.

canReceiveNewChildrenOfType(_shape: Shape, _type: TLShape['type']): boolean

Parameters

Name	Description
`_shape`	`Shape`
`_type`	`TLShape['type']`

Returns

boolean

canResize()

from ShapeUtil

Whether the shape can be resized.

canResize(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canResizeChildren()

from ShapeUtil

When the shape is resized, whether the shape's children should also be resized.

canResizeChildren(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canScroll()

from ShapeUtil

Whether the shape can be scrolled while editing.

canScroll(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canSnap()

from ShapeUtil

Whether the shape can be snapped to by another shape.

canSnap(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

canTabTo()

canTabTo(): boolean

component()

component(shape: TLLineShape): import('react/jsx-runtime').JSX.Element

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

import('react/jsx-runtime').JSX.Element

getAriaDescriptor()

from ShapeUtil

getAriaDescriptor(_shape: Shape): string | undefined

Parameters

Name	Description
`_shape`	`Shape`

Returns

string | undefined

getBoundsSnapGeometry()

from ShapeUtil

Get the geometry to use when snapping to this this shape in translate/resize operations. See BoundsSnapGeometry for details.

getBoundsSnapGeometry(_shape: Shape): BoundsSnapGeometry

Parameters

Name	Description
`_shape`	`Shape`

Returns

BoundsSnapGeometry

getCanvasSvgDefs()

from ShapeUtil

Return elements to be added to the <defs> section of the canvases SVG context. This can be used to define SVG content (e.g. patterns & masks) that can be referred to by ID from svg elements returned by component.

Each def should have a unique key. If multiple defs from different shapes all have the same key, only one will be used.

getCanvasSvgDefs(): TLShapeUtilCanvasSvgDef[]

getDefaultProps()

getDefaultProps(): TLLineShape['props']

getFontFaces()

from ShapeUtil

Get the font faces that should be rendered in the document in order for this shape to render correctly.

getFontFaces(shape: Shape): TLFontFace[]

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLFontFace[]

getGeometry()

getGeometry(shape: TLLineShape): PathBuilderGeometry2d

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

PathBuilderGeometry2d

getHandles()

getHandles(shape: TLLineShape): TLHandle[]

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

TLHandle[]

getHandleSnapGeometry()

getHandleSnapGeometry(shape: TLLineShape): HandleSnapGeometry

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

HandleSnapGeometry

getInterpolatedProps()

getInterpolatedProps(
  startShape: TLLineShape,
  endShape: TLLineShape,
  t: number
): TLLineShape['props']

Parameters

Name	Description
`startShape`	`TLLineShape`
`endShape`	`TLLineShape`
`t`	`number`

Returns

TLLineShape['props']

getText()

from ShapeUtil

getText(_shape: Shape): string | undefined

Parameters

Name	Description
`_shape`	`Shape`

Returns

string | undefined

hideResizeHandles()

hideResizeHandles(): boolean

hideRotateHandle()

hideRotateHandle(): boolean

hideSelectionBoundsBg()

hideSelectionBoundsBg(): boolean

hideSelectionBoundsFg()

hideSelectionBoundsFg(): boolean

indicator()

indicator(shape: TLLineShape): import('react/jsx-runtime').JSX.Element

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

import('react/jsx-runtime').JSX.Element

isAspectRatioLocked()

from ShapeUtil

Whether the shape's aspect ratio is locked.

isAspectRatioLocked(_shape: Shape): boolean

Parameters

Name	Description
`_shape`	`Shape`

Returns

boolean

onBeforeCreate()

onBeforeCreate(next: TLLineShape): TLLineShape | void

Parameters

Name	Description
`next`	`TLLineShape`

Returns

TLLineShape | void

onBeforeUpdate()

optional

from ShapeUtil

A callback called just before a shape is updated. This method provides a last chance to modify the updated shape.

onBeforeUpdate?(prev: Shape, next: Shape): Shape | void

Example

onBeforeUpdate = (prev, next) => {
  if (prev.x === next.x) {
    return { ...next, x: next.x + 1 }
  }
}

Parameters

Name	Description
`prev`	`Shape` The previous shape.
`next`	`Shape` The next shape.

Returns

Shape | void

The next shape or void.

onChildrenChange()

optional

from ShapeUtil

A callback called when a shape's children change.

onChildrenChange?(shape: Shape): TLShapePartial[] | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial[] | void

An array of shape updates, or void.

onClick()

optional

from ShapeUtil

A callback called when a shape is clicked.

onClick?(shape: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onCrop()

optional

from ShapeUtil

A callback called when a shape changes from a crop.

onCrop?(
  shape: Shape,
  info: TLCropInfo<Shape>
): Omit<TLShapePartial<Shape>, 'id' | 'type'> | undefined | void

Parameters

Name	Description
`shape`	`Shape` The shape at the start of the crop.
`info`	`TLCropInfo<Shape>` Info about the crop.

Returns

Omit<TLShapePartial<Shape>, 'id' | 'type'> | undefined | void

A change to apply to the shape, or void.

onDoubleClick()

optional

from ShapeUtil

A callback called when a shape is double clicked.

onDoubleClick?(shape: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onDoubleClickCorner()

optional

from ShapeUtil

A callback called when a shape's corner is double clicked.

onDoubleClickCorner?(
  shape: Shape,
  info: TLClickEventInfo
): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.
`info`	`TLClickEventInfo` Info about the corner.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onDoubleClickEdge()

optional

from ShapeUtil

A callback called when a shape's edge is double clicked.

onDoubleClickEdge?(
  shape: Shape,
  info: TLClickEventInfo
): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.
`info`	`TLClickEventInfo` Info about the edge.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onDoubleClickHandle()

optional

from ShapeUtil

A callback called when a shape's handle is double clicked.

onDoubleClickHandle?(
  shape: Shape,
  handle: TLHandle
): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.
`handle`	`TLHandle` The handle that is double-clicked.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onDragShapesIn()

optional

from ShapeUtil

A callback called when some other shapes are dragged into this one. This fires when the shapes are dragged over the shape for the first time.

onDragShapesIn?(
  shape: Shape,
  shapes: TLShape[],
  info: TLDragShapesInInfo
): void

Parameters

Name	Description
`shape`	`Shape` The shape.
`shapes`	`TLShape[]` The shapes that are being dragged in.
`info`	`TLDragShapesInInfo`

Returns

void

onDragShapesOut()

optional

from ShapeUtil

A callback called when some other shapes are dragged out of this one.

onDragShapesOut?(
  shape: Shape,
  shapes: TLShape[],
  info: TLDragShapesOutInfo
): void

Parameters

Name	Description
`shape`	`Shape` The shape.
`shapes`	`TLShape[]` The shapes that are being dragged out.
`info`	`TLDragShapesOutInfo`

Returns

void

onDragShapesOver()

optional

from ShapeUtil

A callback called when some other shapes are dragged over this one. This fires when the shapes are dragged over the shape for the first time (after the onDragShapesIn callback), and again on every update while the shapes are being dragged.

onDragShapesOver?(
  shape: Shape,
  shapes: TLShape[],
  info: TLDragShapesOverInfo
): void

Example

onDragShapesOver = (shape, shapes) => {
  this.editor.reparentShapes(shapes, shape.id)
}

Parameters

Name	Description
`shape`	`Shape` The shape.
`shapes`	`TLShape[]` The shapes that are being dragged over this one.
`info`	`TLDragShapesOverInfo`

Returns

void

onDropShapesOver()

optional

from ShapeUtil

A callback called when some other shapes are dropped over this one.

onDropShapesOver?(
  shape: Shape,
  shapes: TLShape[],
  info: TLDropShapesOverInfo
): void

Parameters

Name	Description
`shape`	`Shape` The shape.
`shapes`	`TLShape[]` The shapes that are being dropped over this one.
`info`	`TLDropShapesOverInfo`

Returns

void

onEditEnd()

optional

from ShapeUtil

A callback called when a shape finishes being edited.

onEditEnd?(shape: Shape): void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

void

onEditStart()

optional

from ShapeUtil

A callback called when a shape starts being edited.

onEditStart?(shape: Shape): void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

void

onHandleDrag()

onHandleDrag(
  shape: TLLineShape,
  { handle }: TLHandleDragInfo<TLLineShape>
):
  | {
      id: import('@tldraw/editor').TLShapeId
      index: import('@tldraw/editor').IndexKey
      isLocked: boolean
      meta: import('@tldraw/editor').JsonObject
      opacity: import('@tldraw/editor').TLOpacityType
      parentId: import('@tldraw/editor').TLParentId
      props: {
        color: import('@tldraw/editor').TLDefaultColorStyle
        dash: import('@tldraw/editor').TLDefaultDashStyle
        points: {
          [x: string]:
            | {
                id: string
                index: import('@tldraw/editor').IndexKey
                x: number
                y: number
              }
            | TLLineShapePoint
        }
        scale: number
        size: import('@tldraw/editor').TLDefaultSizeStyle
        spline: import('@tldraw/editor').TLLineShapeSplineStyle
      }
      rotation: number
      type: 'line'
      typeName: 'shape'
      x: number
      y: number
    }
  | undefined

Parameters

Name	Description
`shape`	`TLLineShape`
`{ handle }`	`TLHandleDragInfo<TLLineShape>`

Returns

  | {
      id: import('@tldraw/editor').TLShapeId
      index: import('@tldraw/editor').IndexKey
      isLocked: boolean
      meta: import('@tldraw/editor').JsonObject
      opacity: import('@tldraw/editor').TLOpacityType
      parentId: import('@tldraw/editor').TLParentId
      props: {
        color: import('@tldraw/editor').TLDefaultColorStyle
        dash: import('@tldraw/editor').TLDefaultDashStyle
        points: {
          [x: string]:
            | {
                id: string
                index: import('@tldraw/editor').IndexKey
                x: number
                y: number
              }
            | TLLineShapePoint
        }
        scale: number
        size: import('@tldraw/editor').TLDefaultSizeStyle
        spline: import('@tldraw/editor').TLLineShapeSplineStyle
      }
      rotation: number
      type: 'line'
      typeName: 'shape'
      x: number
      y: number
    }
  | undefined

onResize()

onResize(
  shape: TLLineShape,
  info: TLResizeInfo<TLLineShape>
): {
  props: {
    points: {
      [x: string]: {
        id: string
        index: import('@tldraw/editor').IndexKey
        x: number
        y: number
      }
    }
  }
}

Parameters

Name	Description
`shape`	`TLLineShape`
`info`	`TLResizeInfo<TLLineShape>`

Returns

{
  props: {
    points: {
      [x: string]: {
        id: string
        index: import('@tldraw/editor').IndexKey
        x: number
        y: number
      }
    }
  }
}

onResizeEnd()

optional

from ShapeUtil

A callback called when a shape finishes resizing.

onResizeEnd?(initial: Shape, current: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`initial`	`Shape` The shape at the start of the resize.
`current`	`Shape` The current shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onResizeStart()

optional

from ShapeUtil

A callback called when a shape starts being resized.

onResizeStart?(shape: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onRotate()

optional

from ShapeUtil

A callback called when a shape changes from a rotation.

onRotate?(initial: Shape, current: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`initial`	`Shape` The shape at the start of the rotation.
`current`	`Shape` The current shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onRotateEnd()

optional

from ShapeUtil

A callback called when a shape finishes rotating.

onRotateEnd?(initial: Shape, current: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`initial`	`Shape` The shape at the start of the rotation.
`current`	`Shape` The current shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onRotateStart()

optional

from ShapeUtil

A callback called when a shape starts being rotated.

onRotateStart?(shape: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onTranslate()

optional

from ShapeUtil

A callback called when a shape changes from a translation.

onTranslate?(initial: Shape, current: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`initial`	`Shape` The shape at the start of the translation.
`current`	`Shape` The current shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onTranslateEnd()

optional

from ShapeUtil

A callback called when a shape finishes translating.

onTranslateEnd?(initial: Shape, current: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`initial`	`Shape` The shape at the start of the translation.
`current`	`Shape` The current shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

onTranslateStart()

optional

from ShapeUtil

A callback called when a shape starts being translated.

onTranslateStart?(shape: Shape): TLShapePartial<Shape> | void

Parameters

Name	Description
`shape`	`Shape` The shape.

Returns

TLShapePartial<Shape> | void

A change to apply to the shape, or void.

toBackgroundSvg()

optional

from ShapeUtil

Get the shape's background layer as an SVG object.

toBackgroundSvg?(
  shape: Shape,
  ctx: SvgExportContext
): null | Promise<null | ReactElement> | ReactElement

Parameters

Name	Description
`shape`	`Shape` The shape.
`ctx`	`SvgExportContext` ctx - The export context for the SVG - used for adding e.g. <def>s

Returns

null | Promise<null | ReactElement> | ReactElement

An SVG element.

toSvg()

toSvg(shape: TLLineShape): import('react/jsx-runtime').JSX.Element

Parameters

Name	Description
`shape`	`TLLineShape`

Returns

import('react/jsx-runtime').JSX.Element