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Polygon

Root object class from which all 2d shape classes inherit from

Tutorial

http://fabricjs.com/fabric-intro-part-1#objects

Fires

added

Fires

removed

Fires

selected

Fires

deselected

Fires

rotating

Fires

scaling

Fires

moving

Fires

skewing

Fires

modified

Fires

mousedown

Fires

mouseup

Fires

mouseover

Fires

mouseout

Fires

mousewheel

Fires

mousedblclick

Fires

dragover

Fires

dragenter

Fires

dragleave

Fires

drop

Extends

Constructors

new Polygon()

new Polygon(points, options?): Polygon

Constructor

Parameters

points: XY[] = []

Array of points (where each point is an object with x and y)

options?: Partial<FabricObjectProps> = ...

Options object

Returns

Polygon

thisArg

Example

var poly = new Polyline([
{ x: 10, y: 10 },
{ x: 50, y: 30 },
{ x: 40, y: 70 },
{ x: 60, y: 50 },
{ x: 100, y: 150 },
{ x: 40, y: 100 }
], {
stroke: 'red',
left: 100,
top: 100
});

Inherited from

Polyline.constructor

Defined in

src/shapes/Polyline.ts:118

Properties

__corner?

optional __corner: string

keeps the value of the last hovered corner during mouse move. 0 is no corner, or ‘mt’, ‘ml’, ‘mtr’ etc.. It should be private, but there is no harm in using it as a read-only property. this isn’t cleaned automatically. Non selected objects may have wrong values

Inherited from

Polyline.__corner

Defined in

src/shapes/Object/InteractiveObject.ts:105


_controlsVisibility

_controlsVisibility: Record<string, boolean>

a map of control visibility for this object. this was left when controls were introduced to not break the api too much this takes priority over the generic control visibility

Inherited from

Polyline._controlsVisibility

Defined in

src/shapes/Object/InteractiveObject.ts:112


_scaling?

optional _scaling: boolean

A boolean used from the gesture module to keep tracking of a scaling action when there is no scaling transform in place. This is an edge case and is used twice in all codebase. Probably added to keep track of some performance issues

TODO

use git blame to investigate why it was added DON’T USE IT. WE WILL TRY TO REMOVE IT

Inherited from

Polyline._scaling

Defined in

src/shapes/Object/InteractiveObject.ts:134


aCoords

aCoords: TCornerPoint

Describe object’s corner position in scene coordinates. The coordinates are derived from the following: left, top, width, height, scaleX, scaleY, skewX, skewY, angle, strokeWidth. The coordinates do not depend on viewport changes. The coordinates get updated with setCoords. You can calculate them without updating with ()

Inherited from

Polyline.aCoords

Defined in

src/shapes/Object/ObjectGeometry.ts:63


absolutePositioned

absolutePositioned: boolean

Meaningful ONLY when the object is used as clipPath. if true, the clipPath will have its top and left relative to canvas, and will not be influenced by the object transform. This will make the clipPath relative to the canvas, but clipping just a particular object. WARNING this is beta, this feature may change or be renamed. since 2.4.0

Default

false

Inherited from

Polyline.absolutePositioned

Defined in

src/shapes/Object/Object.ts:218


angle

angle: TDegree

Angle of rotation of an object (in degrees)

Default

0

Inherited from

Polyline.angle

Defined in

src/shapes/Object/ObjectGeometry.ts:581


backgroundColor

backgroundColor: string

Background color of an object. takes css colors https://www.w3.org/TR/css-color-3/

Default

Inherited from

Polyline.backgroundColor

Defined in

src/shapes/Object/Object.ts:205


borderColor

borderColor: string

Color of controlling borders of an object (when it’s active)

Default

rgb(178,204,255)

Inherited from

Polyline.borderColor

Defined in

src/shapes/Object/InteractiveObject.ts:74


borderDashArray

borderDashArray: null | number[]

Array specifying dash pattern of an object’s borders (hasBorder must be true)

Since

1.6.2

Inherited from

Polyline.borderDashArray

Defined in

src/shapes/Object/InteractiveObject.ts:75


borderOpacityWhenMoving

borderOpacityWhenMoving: number

Opacity of object’s controlling borders when object is active and moving

Default

0.4

Inherited from

Polyline.borderOpacityWhenMoving

Defined in

src/shapes/Object/InteractiveObject.ts:76


borderScaleFactor

borderScaleFactor: number

Scale factor of object’s controlling borders bigger number will make a thicker border border is 1, so this is basically a border thickness since there is no way to change the border itself.

Default

1

Inherited from

Polyline.borderScaleFactor

Defined in

src/shapes/Object/InteractiveObject.ts:77


centeredRotation

centeredRotation: boolean

When true the object will rotate on its center. When false will rotate around the origin point defined by originX and originY. The value of this property is IGNORED during a transform if the canvas has already centeredRotation set to true The object method rotate will always consider this property and never the canvas’s one.

Since

1.3.4

Default

Inherited from

Polyline.centeredRotation

Defined in

src/shapes/Object/Object.ts:219


centeredScaling

centeredScaling: boolean

When true, this object will use center point as the origin of transformation when being scaled via the controls.

Since

1.3.4

Default

Inherited from

Polyline.centeredScaling

Defined in

src/shapes/Object/Object.ts:220


clipPath?

optional clipPath: BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>

a fabricObject that, without stroke define a clipping area with their shape. filled in black the clipPath object gets used when the object has rendered, and the context is placed in the center of the object cacheCanvas. If you want 0,0 of a clipPath to align with an object center, use clipPath.originX/Y to ‘center’

Inherited from

Polyline.clipPath

Defined in

src/shapes/Object/Object.ts:216


clipPathId?

optional clipPathId: string

When an object is being exported as SVG as a clippath, a reference inside the SVG is needed. This reference is a UID in the fabric namespace and is temporary stored here.

Inherited from

Polyline.clipPathId

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:14


controls

controls: TControlSet

holds the controls for the object. controls are added by default_controls.js

Inherited from

Polyline.controls

Defined in

src/shapes/Object/InteractiveObject.ts:118


cornerColor

cornerColor: string

Color of controlling corners of an object (when it’s active)

Default

rgb(178,204,255)

Inherited from

Polyline.cornerColor

Defined in

src/shapes/Object/InteractiveObject.ts:68


cornerDashArray

cornerDashArray: null | number[]

Array specifying dash pattern of an object’s control (hasBorder must be true)

Since

1.6.2

Default

null

Inherited from

Polyline.cornerDashArray

Defined in

src/shapes/Object/InteractiveObject.ts:71


cornerSize

cornerSize: number

Size of object’s controlling corners (in pixels)

Default

13

Inherited from

Polyline.cornerSize

Defined in

src/shapes/Object/InteractiveObject.ts:65


cornerStrokeColor

cornerStrokeColor: string

Color of controlling corners of an object (when it’s active and transparentCorners false)

Since

1.6.2

Default

''

Inherited from

Polyline.cornerStrokeColor

Defined in

src/shapes/Object/InteractiveObject.ts:69


cornerStyle

cornerStyle: "circle" | "rect"

Specify style of control, ‘rect’ or ‘circle’ This is deprecated. In the future there will be a standard control render And you can swap it with one of the alternative proposed with the control api

Since

1.6.2

Default

'rect'

Inherited from

Polyline.cornerStyle

Defined in

src/shapes/Object/InteractiveObject.ts:70


dirty

dirty: boolean

When set to true, object’s cache will be rerendered next render call. since 1.7.0

Default

true

Inherited from

Polyline.dirty

Defined in

src/shapes/Object/Object.ts:245


evented

evented: boolean

When set to false, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4

Default

Inherited from

Polyline.evented

Defined in

src/shapes/Object/InteractiveObject.ts:82


exactBoundingBox

exactBoundingBox: boolean

WARNING: Feature in progress Calculate the exact bounding box taking in account strokeWidth on acute angles this will be turned to true by default on fabric 6.0 maybe will be left in as an optimization since calculations may be slow

Default

false

Inherited from

Polyline.exactBoundingBox

Defined in

src/shapes/Polyline.ts:61


excludeFromExport

excludeFromExport: boolean

When true, object is not exported in OBJECT/JSON

Since

1.6.3

Default

Inherited from

Polyline.excludeFromExport

Defined in

src/shapes/Object/Object.ts:212


fill

fill: null | string | TFiller

Color of object’s fill takes css colors https://www.w3.org/TR/css-color-3/

Default

rgb(0,0,0)

Inherited from

Polyline.fill

Defined in

src/shapes/Object/Object.ts:195


fillRule

fillRule: CanvasFillRule

Fill rule used to fill an object accepted values are nonzero, evenodd Backwards incompatibility note: This property was used for setting globalCompositeOperation until v1.4.12 (use globalCompositeOperation instead)

Default

nonzero

Inherited from

Polyline.fillRule

Defined in

src/shapes/Object/Object.ts:196


flipX

flipX: boolean

When true, an object is rendered as flipped horizontally

Default

false

Inherited from

Polyline.flipX

Defined in

src/shapes/Object/ObjectGeometry.ts:567


flipY

flipY: boolean

When true, an object is rendered as flipped vertically

Default

false

Inherited from

Polyline.flipY

Defined in

src/shapes/Object/ObjectGeometry.ts:568


globalCompositeOperation

globalCompositeOperation: GlobalCompositeOperation

Composite rule used for canvas globalCompositeOperation

Default

Inherited from

Polyline.globalCompositeOperation

Defined in

src/shapes/Object/Object.ts:204


hasBorders

hasBorders: boolean

When set to false, object’s controlling borders are not rendered

Default

Inherited from

Polyline.hasBorders

Defined in

src/shapes/Object/InteractiveObject.ts:78


hasControls

hasControls: boolean

When set to false, object’s controls are not displayed and can not be used to manipulate object

Default

true

Inherited from

Polyline.hasControls

Defined in

src/shapes/Object/InteractiveObject.ts:72


height

height: number

Object height

Default

Inherited from

Polyline.height

Defined in

src/shapes/Object/ObjectGeometry.ts:566


hoverCursor

hoverCursor: null | string

Default cursor value used when hovering over this object on canvas

Default

null

Inherited from

Polyline.hoverCursor

Defined in

src/shapes/Object/InteractiveObject.ts:86


includeDefaultValues

includeDefaultValues: boolean

When false, default object’s values are not included in its serialization

Default

Inherited from

Polyline.includeDefaultValues

Defined in

src/shapes/Object/Object.ts:211


inverted

inverted: boolean

Meaningful ONLY when the object is used as clipPath. if true, the clipPath will make the object clip to the outside of the clipPath since 2.4.0

Default

false

Inherited from

Polyline.inverted

Defined in

src/shapes/Object/Object.ts:217


isMoving?

optional isMoving: boolean

internal boolean to signal the code that the object is part of the move action.

Inherited from

Polyline.isMoving

Defined in

src/shapes/Object/InteractiveObject.ts:124


left

left: number

Left position of an object. Note that by default it’s relative to object left. You can change this by setting originX

Default

0

Inherited from

Polyline.left

Defined in

src/shapes/Object/ObjectGeometry.ts:564


lockMovementX

lockMovementX: boolean

When true, object horizontal movement is locked

Default

Inherited from

Polyline.lockMovementX

Defined in

src/shapes/Object/InteractiveObject.ts:56


lockMovementY

lockMovementY: boolean

When true, object vertical movement is locked

Default

Inherited from

Polyline.lockMovementY

Defined in

src/shapes/Object/InteractiveObject.ts:57


lockRotation

lockRotation: boolean

When true, object rotation is locked

Default

Inherited from

Polyline.lockRotation

Defined in

src/shapes/Object/InteractiveObject.ts:58


lockScalingFlip

lockScalingFlip: boolean

When true, object cannot be flipped by scaling into negative values

Default

Inherited from

Polyline.lockScalingFlip

Defined in

src/shapes/Object/InteractiveObject.ts:63


lockScalingX

lockScalingX: boolean

When true, object horizontal scaling is locked

Default

Inherited from

Polyline.lockScalingX

Defined in

src/shapes/Object/InteractiveObject.ts:59


lockScalingY

lockScalingY: boolean

When true, object vertical scaling is locked

Default

Inherited from

Polyline.lockScalingY

Defined in

src/shapes/Object/InteractiveObject.ts:60


lockSkewingX

lockSkewingX: boolean

When true, object horizontal skewing is locked

Default

Inherited from

Polyline.lockSkewingX

Defined in

src/shapes/Object/InteractiveObject.ts:61


lockSkewingY

lockSkewingY: boolean

When true, object vertical skewing is locked

Default

Inherited from

Polyline.lockSkewingY

Defined in

src/shapes/Object/InteractiveObject.ts:62


matrixCache?

optional matrixCache: TMatrixCache

storage cache for object full transform matrix

Inherited from

Polyline.matrixCache

Defined in

src/shapes/Object/ObjectGeometry.ts:73


minScaleLimit

minScaleLimit: number

Minimum allowed scale value of an object

Default

0

Inherited from

Polyline.minScaleLimit

Defined in

src/shapes/Object/Object.ts:190


moveCursor

moveCursor: null | string

Default cursor value used when moving this object on canvas

Default

null

Inherited from

Polyline.moveCursor

Defined in

src/shapes/Object/InteractiveObject.ts:87


noScaleCache

noScaleCache: boolean

When true, cache does not get updated during scaling. The picture will get blocky if scaled too much and will be redrawn with correct details at the end of scaling. this setting is performance and application dependant. default to true since 1.7.0

Default

true

Inherited from

Polyline.noScaleCache

Defined in

src/shapes/Object/InteractiveObject.ts:51


oCoords

oCoords: Record<string, TOCoord>

The object’s controls’ position in viewport coordinates Calculated by Control#positionHandler and Control#calcCornerCoords, depending on padding. corner/touchCorner describe the 4 points forming the interactive area of the corner. Used to draw and locate controls.

Inherited from

Polyline.oCoords

Defined in

src/shapes/Object/InteractiveObject.ts:95


objectCaching

objectCaching: boolean

When true, object is cached on an additional canvas. When false, object is not cached unless necessary ( clipPath ) default to true

Since

1.7.0

Default

true

Inherited from

Polyline.objectCaching

Defined in

src/shapes/Object/Object.ts:214


opacity

opacity: number

Opacity of an object

Default

1

Inherited from

Polyline.opacity

Defined in

src/shapes/Object/Object.ts:192


originX

originX: TOriginX

Inherited from

Polyline.originX

Defined in

src/shapes/Object/ObjectGeometry.ts:576


originY

originY: TOriginY

Inherited from

Polyline.originY

Defined in

src/shapes/Object/ObjectGeometry.ts:580


ownMatrixCache?

optional ownMatrixCache: TMatrixCache

storage cache for object transform matrix

Inherited from

Polyline.ownMatrixCache

Defined in

src/shapes/Object/ObjectGeometry.ts:68


padding

padding: number

Padding between object and its controlling borders (in pixels)

Default

0

Inherited from

Polyline.padding

Defined in

src/shapes/Object/ObjectGeometry.ts:53


paintFirst

paintFirst: "fill" | "stroke"

Determines if the fill or the stroke is drawn first (one of “fill” or “stroke”)

Default

Inherited from

Polyline.paintFirst

Defined in

src/shapes/Object/Object.ts:194


parent?

optional parent: Group

A reference to the parent of the object Used to keep the original parent ref when the object has been added to an ActiveSelection, hence loosing the group ref

Inherited from

Polyline.parent

Defined in

src/shapes/Object/Object.ts:1636


pathOffset

pathOffset: Point

Inherited from

Polyline.pathOffset

Defined in

src/shapes/Polyline.ts:91


perPixelTargetFind

perPixelTargetFind: boolean

When set to true, objects are “found” on canvas on per-pixel basis rather than according to bounding box

Default

Inherited from

Polyline.perPixelTargetFind

Defined in

src/shapes/Object/InteractiveObject.ts:83


points

points: XY[]

Points array

Default

Inherited from

Polyline.points

Defined in

src/shapes/Polyline.ts:50


scaleX

scaleX: number

Object scale factor (horizontal)

Default

1

Inherited from

Polyline.scaleX

Defined in

src/shapes/Object/ObjectGeometry.ts:569


scaleY

scaleY: number

Object scale factor (vertical)

Default

1

Inherited from

Polyline.scaleY

Defined in

src/shapes/Object/ObjectGeometry.ts:570


selectable

selectable: boolean

When set to false, an object can not be selected for modification (using either point-click-based or group-based selection). But events still fire on it.

Default

Inherited from

Polyline.selectable

Defined in

src/shapes/Object/InteractiveObject.ts:81


selectionBackgroundColor

selectionBackgroundColor: string

Selection Background color of an object. colored layer behind the object when it is active. does not mix good with globalCompositeOperation methods.

Default

Inherited from

Polyline.selectionBackgroundColor

Defined in

src/shapes/Object/InteractiveObject.ts:79


shadow

shadow: null | Shadow

Shadow object representing shadow of this shape

Default

null

Inherited from

Polyline.shadow

Defined in

src/shapes/Object/Object.ts:207


skewX

skewX: number

Angle of skew on x axes of an object (in degrees)

Default

0

Inherited from

Polyline.skewX

Defined in

src/shapes/Object/ObjectGeometry.ts:571


skewY

skewY: number

Angle of skew on y axes of an object (in degrees)

Default

0

Inherited from

Polyline.skewY

Defined in

src/shapes/Object/ObjectGeometry.ts:572


snapAngle?

optional snapAngle: TDegree

The angle that an object will lock to while rotating.

Inherited from

Polyline.snapAngle

Defined in

src/shapes/Object/InteractiveObject.ts:53


snapThreshold?

optional snapThreshold: TDegree

The angle difference from the current snapped angle in which snapping should occur. When undefined, the snapThreshold will default to the snapAngle.

Inherited from

Polyline.snapThreshold

Defined in

src/shapes/Object/InteractiveObject.ts:54


stroke

stroke: null | string | TFiller

When defined, an object is rendered via stroke and this property specifies its color takes css colors https://www.w3.org/TR/css-color-3/

Default

null

Inherited from

Polyline.stroke

Defined in

src/shapes/Object/Object.ts:197


strokeDashArray

strokeDashArray: null | number[]

Array specifying dash pattern of an object’s stroke (stroke must be defined)

Default

null;

Inherited from

Polyline.strokeDashArray

Defined in

src/shapes/Object/Object.ts:198


strokeDashOffset

strokeDashOffset: number

Line offset of an object’s stroke

Default

0

Inherited from

Polyline.strokeDashOffset

Defined in

src/shapes/Object/Object.ts:199


strokeDiff

strokeDiff: Point

Inherited from

Polyline.strokeDiff

Defined in

src/shapes/Polyline.ts:97


strokeLineCap

strokeLineCap: CanvasLineCap

Line endings style of an object’s stroke (one of “butt”, “round”, “square”)

Default

butt

Inherited from

Polyline.strokeLineCap

Defined in

src/shapes/Object/Object.ts:200


strokeLineJoin

strokeLineJoin: CanvasLineJoin

Corner style of an object’s stroke (one of “bevel”, “round”, “miter”)

Default

Inherited from

Polyline.strokeLineJoin

Defined in

src/shapes/Object/Object.ts:201


strokeMiterLimit

strokeMiterLimit: number

Maximum miter length (used for strokeLineJoin = “miter”) of an object’s stroke

Default

4

Inherited from

Polyline.strokeMiterLimit

Defined in

src/shapes/Object/Object.ts:202


strokeOffset

strokeOffset: Point

Inherited from

Polyline.strokeOffset

Defined in

src/shapes/Polyline.ts:93


strokeUniform

strokeUniform: boolean

When false, the stoke width will scale with the object. When true, the stroke will always match the exact pixel size entered for stroke width. this Property does not work on Text classes or drawing call that uses strokeText,fillText methods default to false

Since

2.6.0

Default

false

Default

false

Inherited from

Polyline.strokeUniform

Defined in

src/shapes/Object/ObjectGeometry.ts:583


strokeWidth

strokeWidth: number

Width of a stroke used to render this object

Default

1

Inherited from

Polyline.strokeWidth

Defined in

src/shapes/Object/ObjectGeometry.ts:582


top

top: number

Top position of an object. Note that by default it’s relative to object top. You can change this by setting originY

Default

0

Inherited from

Polyline.top

Defined in

src/shapes/Object/ObjectGeometry.ts:563


touchCornerSize

touchCornerSize: number

Size of object’s controlling corners when touch interaction is detected

Default

24

Inherited from

Polyline.touchCornerSize

Defined in

src/shapes/Object/InteractiveObject.ts:66


transparentCorners

transparentCorners: boolean

When true, object’s controlling corners are rendered as transparent inside (i.e. stroke instead of fill)

Default

true

Inherited from

Polyline.transparentCorners

Defined in

src/shapes/Object/InteractiveObject.ts:67


visible

visible: boolean

When set to false, an object is not rendered on canvas

Default

Inherited from

Polyline.visible

Defined in

src/shapes/Object/Object.ts:209


width

width: number

Object width

Default

Inherited from

Polyline.width

Defined in

src/shapes/Object/ObjectGeometry.ts:565


ATTRIBUTE_NAMES

static ATTRIBUTE_NAMES: string[]

List of attribute names to account for when parsing SVG element (used by Polyline.fromElement)

Static

Member Of

Polyline @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement

Inherited from

Polyline.ATTRIBUTE_NAMES

Defined in

src/shapes/Polyline.ts:391


cacheProperties

static cacheProperties: string[]

List of properties to consider when checking if cache needs refresh Those properties are checked by calls to Object.set(key, value). If the key is in this list, the object is marked as dirty and refreshed at the next render

Inherited from

Polyline.cacheProperties

Defined in

src/shapes/Polyline.ts:95


colorProperties

static colorProperties: string[]

List of properties to consider for animating colors.

Inherited from

Polyline.colorProperties

Defined in

src/shapes/Object/Object.ts:1543


customProperties

static customProperties: string[] = []

Define a list of custom properties that will be serialized when instance.toObject() gets called

Inherited from

Polyline.customProperties

Defined in

src/shapes/Object/Object.ts:1784


layoutProperties

static layoutProperties: keyof Polyline<Partial<FabricObjectProps>, SerializedPolylineProps, ObjectEvents>[]

A list of properties that if changed trigger a recalculation of dimensions

Todo

check if you really need to recalculate for all cases

Inherited from

Polyline.layoutProperties

Defined in

src/shapes/Polyline.ts:80


ownDefaults

static ownDefaults: Partial<TClassProperties<Polyline<Partial<FabricObjectProps>, SerializedPolylineProps, ObjectEvents>>> = polylineDefaultValues

Overrides

Polyline.ownDefaults

Defined in

src/shapes/Polygon.ts:5


stateProperties

static stateProperties: string[]

This list of properties is used to check if the state of an object is changed. This state change now is only used for children of groups to understand if a group needs its cache regenerated during a .set call

Inherited from

Polyline.stateProperties

Defined in

src/shapes/Object/Object.ts:228


type

static type: string = 'Polygon'

The class type. This is used for serialization and deserialization purposes and internally it can be used to identify classes. When we transform a class in a plain JS object we need a way to recognize which class it was, and the type is the way we do that. It has no other purposes and you should not give one. Hard to reach on instances and please do not use to drive instance’s logic (this.constructor.type). To idenfity a class use instanceof class ( instanceof Rect ). We do not do that in fabricJS code because we want to try to have code splitting possible.

Overrides

Polyline.type

Defined in

src/shapes/Polygon.ts:7

Accessors

type

get type(): string

Legacy identifier of the class. Prefer using utils like isType or instanceOf Will be removed in fabric 7 or 8. The setter exists to avoid type errors in old code and possibly current deserialization code. DO NOT build new code around this type value

TODO

add sustainable warning message

set type(value): void

Parameters

value: string

Returns

string

Inherited from

Polyline.type

Defined in

src/shapes/Object/Object.ts:357

Methods

_drawClipPath()

_drawClipPath(ctx, clipPath, context): void

Prepare clipPath state and cache and draw it on instance’s cache

Parameters

ctx: CanvasRenderingContext2D

clipPath: undefined | BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>

context: DrawContext

Returns

void

Inherited from

Polyline._drawClipPath

Defined in

src/shapes/Object/Object.ts:920


_getNonTransformedDimensions()

_getNonTransformedDimensions(): Point

stroke is taken in account in size

Returns

Point

Inherited from

Polyline._getNonTransformedDimensions

Defined in

src/shapes/Polyline.ts:236


_limitCacheSize()

_limitCacheSize(dims): any

Limit the cache dimensions so that X * Y do not cross config.perfLimitSizeTotal and each side do not cross fabric.cacheSideLimit those numbers are configurable so that you can get as much detail as you want making bargain with performances.

Parameters

dims: any

Returns

any

.width width of canvas

.height height of canvas

.zoomX zoomX zoom value to unscale the canvas before drawing cache

.zoomY zoomY zoom value to unscale the canvas before drawing cache

Inherited from

Polyline._limitCacheSize

Defined in

src/shapes/Object/Object.ts:406


_removeCacheCanvas()

_removeCacheCanvas(): void

Remove cacheCanvas and its dimensions from the objects

Returns

void

Inherited from

Polyline._removeCacheCanvas

Defined in

src/shapes/Object/Object.ts:756


_renderControls()

_renderControls(ctx, styleOverride?): void

Renders controls and borders for the object the context here is not transformed

Parameters

ctx: CanvasRenderingContext2D

Context to render on

styleOverride?: TStyleOverride = {}

properties to override the object style

Returns

void

Todo

move to interactivity

Inherited from

Polyline._renderControls

Defined in

src/shapes/Object/InteractiveObject.ts:435


_setClippingProperties()

_setClippingProperties(ctx): void

Parameters

ctx: CanvasRenderingContext2D

Returns

void

Inherited from

Polyline._setClippingProperties

Defined in

src/shapes/Object/Object.ts:1062


_setFillStyles()

_setFillStyles(ctx, __namedParameters): void

Parameters

ctx: CanvasRenderingContext2D

__namedParameters: Pick<Polygon, "fill">

Returns

void

Inherited from

Polyline._setFillStyles

Defined in

src/shapes/Object/Object.ts:1051


_setStrokeStyles()

_setStrokeStyles(ctx, decl): void

Parameters

ctx: CanvasRenderingContext2D

decl: Pick<Polygon, "stroke" | "strokeDashOffset" | "strokeLineCap" | "strokeLineJoin" | "strokeMiterLimit" | "strokeWidth">

Returns

void

Inherited from

Polyline._setStrokeStyles

Defined in

src/shapes/Object/Object.ts:1009


_setupCompositeOperation()

_setupCompositeOperation(ctx): void

Sets canvas globalCompositeOperation for specific object custom composition operation for the particular object can be specified using globalCompositeOperation property

Parameters

ctx: CanvasRenderingContext2D

Rendering canvas context

Returns

void

Inherited from

Polyline._setupCompositeOperation

Defined in

src/shapes/Object/Object.ts:1518


_toSVG()

_toSVG(): string[]

Returns svg representation of an instance

Returns

string[]

an array of strings with the specific svg representation of the instance

Inherited from

Polyline._toSVG

Defined in

src/shapes/Polyline.ts:326


addPaintOrder()

addPaintOrder(this): string

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

Returns

string

Inherited from

Polyline.addPaintOrder

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:249


animate()

animate<T>(animatable, options?): Record<string, TAnimation<T>>

Animates object’s properties

Type Parameters

T extends number | number[] | TColorArg

Parameters

animatable: Record<string, T>

map of keys and end values

options?: Partial<AnimationOptions<T>>

Returns

Record<string, TAnimation<T>>

map of animation contexts

As object — multiple properties

object.animate({ left: …, top: … }); object.animate({ left: …, top: … }, { duration: … });

Tutorial

http://fabricjs.com/fabric-intro-part-2#animation

Inherited from

Polyline.animate

Defined in

src/shapes/Object/Object.ts:1557


calcACoords()

calcACoords(): TCornerPoint

Calculates the coordinates of the 4 corner of the bbox, in absolute coordinates. those never change with zoom or viewport changes.

Returns

TCornerPoint

Inherited from

Polyline.calcACoords

Defined in

src/shapes/Object/ObjectGeometry.ts:427


calcOCoords()

calcOCoords(): Record<string, TOCoord>

Calculates the coordinates of the center of each control plus the corners of the control itself This basically just delegates to each control positionHandler WARNING: changing what is passed to positionHandler is a breaking change, since position handler is a public api and should be done just if extremely necessary

Returns

Record<string, TOCoord>

Inherited from

Polyline.calcOCoords

Defined in

src/shapes/Object/InteractiveObject.ts:255


calcOwnMatrix()

calcOwnMatrix(): TMat2D

calculate transform matrix that represents the current transformations from the object’s properties, this matrix does not include the group transformation

Returns

TMat2D

transform matrix for the object

Inherited from

Polyline.calcOwnMatrix

Defined in

src/shapes/Object/ObjectGeometry.ts:513


calcTransformMatrix()

calcTransformMatrix(skipGroup?): TMat2D

calculate transform matrix that represents the current transformations from the object’s properties.

Parameters

skipGroup?: boolean = false

return transform matrix for object not counting parent transformations There are some situation in which this is useful to avoid the fake rotation.

Returns

TMat2D

transform matrix for the object

Inherited from

Polyline.calcTransformMatrix

Defined in

src/shapes/Object/ObjectGeometry.ts:485


canDrop()

canDrop(_e): boolean

Override to customize drag and drop behavior

Parameters

_e: DragEvent

Returns

boolean

true if the object currently dragged can be dropped on the target

Inherited from

Polyline.canDrop

Defined in

src/shapes/Object/InteractiveObject.ts:701


clearContextTop()

clearContextTop(restoreManually?): undefined | CanvasRenderingContext2D

Clears the canvas.contextTop in a specific area that corresponds to the object’s bounding box that is in the canvas.contextContainer. This function is used to clear pieces of contextTop where we render ephemeral effects on top of the object. Example: blinking cursor text selection, drag effects.

Parameters

restoreManually?: boolean

When true won’t restore the context after clear, in order to draw something else.

Returns

undefined | CanvasRenderingContext2D

canvas.contextTop that is either still transformed with the object transformMatrix, or restored to neutral transform

Todo

discuss swapping restoreManually with a renderCallback, but think of async issues

Inherited from

Polyline.clearContextTop

Defined in

src/shapes/Object/InteractiveObject.ts:627


clone()

clone(propertiesToInclude?): Promise<Polygon>

Clones an instance.

Parameters

propertiesToInclude?: string[]

Any properties that you might want to additionally include in the output

Returns

Promise<Polygon>

Inherited from

Polyline.clone

Defined in

src/shapes/Object/Object.ts:1292


cloneAsImage()

cloneAsImage(options?): FabricImage<Partial<ImageProps>, SerializedImageProps, ObjectEvents>

Creates an instance of Image out of an object makes use of toCanvasElement. Once this method was based on toDataUrl and loadImage, so it also had a quality and format option. toCanvasElement is faster and produce no loss of quality. If you need to get a real Jpeg or Png from an object, using toDataURL is the right way to do it. toCanvasElement and then toBlob from the obtained canvas is also a good option.

Parameters

options?: ObjectToCanvasElementOptions

for clone as image, passed to toDataURL

Returns

FabricImage<Partial<ImageProps>, SerializedImageProps, ObjectEvents>

Object cloned as image.

Todo

fix the export type, it could not be Image but the type that getClass return for ‘image’.

Inherited from

Polyline.cloneAsImage

Defined in

src/shapes/Object/Object.ts:1318


complexity()

complexity(): number

Returns complexity of an instance

Returns

number

complexity of this instance

Inherited from

Polyline.complexity

Defined in

src/shapes/Polyline.ts:379


containsPoint()

containsPoint(point): boolean

Checks if point is inside the object

Parameters

point: Point

Point to check against

Returns

boolean

true if point is inside the object

Inherited from

Polyline.containsPoint

Defined in

src/shapes/Object/ObjectGeometry.ts:282


dispose()

dispose(): void

cancel instance’s running animations override if necessary to dispose artifacts such as clipPath

Returns

void

Inherited from

Polyline.dispose

Defined in

src/shapes/Object/Object.ts:1528


drawBorders()

drawBorders(ctx, options, styleOverride?): void

Draws borders of an object’s bounding box. Requires public properties: width, height Requires public options: padding, borderColor

Parameters

ctx: CanvasRenderingContext2D

Context to draw on

options: Required<Omit<TComposeMatrixArgs, "flipX" | "flipY">>

object representing current object parameters

styleOverride?: TStyleOverride

object to override the object style

Returns

void

Inherited from

Polyline.drawBorders

Defined in

src/shapes/Object/InteractiveObject.ts:478


drawCacheOnCanvas()

drawCacheOnCanvas(this, ctx): void

Paint the cached copy of the object on the target context.

Parameters

this: TCachedFabricObject<BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>>

ctx: CanvasRenderingContext2D

Context to render on

Returns

void

Inherited from

Polyline.drawCacheOnCanvas

Defined in

src/shapes/Object/Object.ts:942


drawClipPathOnCache()

drawClipPathOnCache(ctx, clipPath, canvasWithClipPath): void

Execute the drawing operation for an object clipPath

Parameters

ctx: CanvasRenderingContext2D

Context to render on

clipPath: BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>

canvasWithClipPath: HTMLCanvasElement

Returns

void

Inherited from

Polyline.drawClipPathOnCache

Defined in

src/shapes/Object/Object.ts:847


drawControls()

drawControls(ctx, styleOverride): void

Draws corners of an object’s bounding box. Requires public properties: width, height Requires public options: cornerSize, padding Be aware that since fabric 6.0 this function does not call setCoords anymore. setCoords needs to be called manually if the object of which we are rendering controls is outside the standard selection and transform process.

Parameters

ctx: CanvasRenderingContext2D

Context to draw on

styleOverride: Partial<Pick<InteractiveFabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>, "cornerStyle" | "cornerSize" | "cornerColor" | "cornerStrokeColor" | "cornerDashArray" | "transparentCorners">> = {}

object to override the object style

Returns

void

Inherited from

Polyline.drawControls

Defined in

src/shapes/Object/InteractiveObject.ts:550


drawControlsConnectingLines()

drawControlsConnectingLines(ctx, size): void

Draws lines from a borders of an object’s bounding box to controls that have withConnection property set. Requires public properties: width, height Requires public options: padding, borderColor

Parameters

ctx: CanvasRenderingContext2D

Context to draw on

size: Point

object size x = width, y = height

Returns

void

Inherited from

Polyline.drawControlsConnectingLines

Defined in

src/shapes/Object/InteractiveObject.ts:517


drawObject()

drawObject(ctx, forClipping, context): void

Execute the drawing operation for an object on a specified context

Parameters

ctx: CanvasRenderingContext2D

Context to render on

forClipping: undefined | boolean

apply clipping styles

context: DrawContext

additional context for rendering

Returns

void

Inherited from

Polyline.drawObject

Defined in

src/shapes/Object/Object.ts:872


drawSelectionBackground()

drawSelectionBackground(ctx): void

Draws a colored layer behind the object, inside its selection borders. Requires public options: padding, selectionBackgroundColor this function is called when the context is transformed has checks to be skipped when the object is on a staticCanvas

Parameters

ctx: CanvasRenderingContext2D

Context to draw on

Returns

void

Todo

evaluate if make this disappear in favor of a pre-render hook for objects this was added by Andrea Bogazzi to make possible some feature for work reasons it seemed a good option, now is an edge case

Inherited from

Polyline.drawSelectionBackground

Defined in

src/shapes/Object/InteractiveObject.ts:375


findCommonAncestors()

findCommonAncestors<T>(other): AncestryComparison

Compare ancestors

Type Parameters

T extends Polygon

Parameters

other: T

Returns

AncestryComparison

an object that represent the ancestry situation.

Inherited from

Polyline.findCommonAncestors

Defined in

src/shapes/Object/Object.ts:1675


fire()

fire<K>(eventName, options?): void

Fires event with an optional options object

Type Parameters

K extends keyof ObjectEvents

Parameters

eventName: K

Event name to fire

options?: ObjectEvents[K]

Options object

Returns

void

Inherited from

Polyline.fire

Defined in

src/Observable.ts:167


forEachControl()

forEachControl(fn): void

Calls a function for each control. The function gets called, with the control, the control’s key and the object that is calling the iterator

Parameters

fn

function to iterate over the controls over

Returns

void

Inherited from

Polyline.forEachControl

Defined in

src/shapes/Object/InteractiveObject.ts:353


get()

get(property): any

Basic getter

Parameters

property: string

Property name

Returns

any

value of a property

Inherited from

Polyline.get

Defined in

src/CommonMethods.ts:59


getActiveControl()

getActiveControl(): undefined | object

Returns

undefined | object

Inherited from

Polyline.getActiveControl

Defined in

src/shapes/Object/InteractiveObject.ts:194


getAncestors()

getAncestors(): Ancestors

Returns

Ancestors

ancestors (excluding ActiveSelection) from bottom to top

Inherited from

Polyline.getAncestors

Defined in

src/shapes/Object/Object.ts:1658


getBoundingRect()

getBoundingRect(): TBBox

Returns coordinates of object’s bounding rectangle (left, top, width, height) the box is intended as aligned to axis of canvas.

Returns

TBBox

Object with left, top, width, height properties

Inherited from

Polyline.getBoundingRect

Defined in

src/shapes/Object/ObjectGeometry.ts:343


getCanvasRetinaScaling()

getCanvasRetinaScaling(): number

Returns

number

Inherited from

Polyline.getCanvasRetinaScaling

Defined in

src/shapes/Object/ObjectGeometry.ts:400


getCenterPoint()

getCenterPoint(): Point

Returns the center coordinates of the object relative to canvas

Returns

Point

Inherited from

Polyline.getCenterPoint

Defined in

src/shapes/Object/ObjectGeometry.ts:732


getCoords()

getCoords(): Point[]

Returns

Point[]

[tl, tr, br, bl] in the scene plane

Inherited from

Polyline.getCoords

Defined in

src/shapes/Object/ObjectGeometry.ts:204


getObjectOpacity()

getObjectOpacity(): number

Return the object opacity counting also the group property

Returns

number

Inherited from

Polyline.getObjectOpacity

Defined in

src/shapes/Object/Object.ts:607


getObjectScaling()

getObjectScaling(): Point

Return the object scale factor counting also the group scaling

Returns

Point

Inherited from

Polyline.getObjectScaling

Defined in

src/shapes/Object/Object.ts:576


getPointByOrigin()

getPointByOrigin(originX, originY): Point

Returns the position of the object as if it has a different origin. Take an object that has left, top set to 100, 100 with origin ‘left’, ‘top’. Return the values of left top ( wrapped in a point ) that you would need to keep the same position if origin where different. Alternatively you can use this to also find which point in the parent plane is a specific origin ( where is the bottom right corner of my object? )

Parameters

originX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

Point

Inherited from

Polyline.getPointByOrigin

Defined in

src/shapes/Object/ObjectGeometry.ts:762


getRelativeCenterPoint()

getRelativeCenterPoint(): Point

Returns the center coordinates of the object relative to it’s parent

Returns

Point

Inherited from

Polyline.getRelativeCenterPoint

Defined in

src/shapes/Object/ObjectGeometry.ts:743


getRelativeX()

getRelativeX(): number

Returns

number

x position according to object’s originX property in parent’s coordinate plane
if parent is canvas then this property is identical to getX

Inherited from

Polyline.getRelativeX

Defined in

src/shapes/Object/ObjectGeometry.ts:115


getRelativeXY()

getRelativeXY(): Point

Returns

Point

x,y position according to object’s originX originY properties in parent’s coordinate plane

Inherited from

Polyline.getRelativeXY

Defined in

src/shapes/Object/ObjectGeometry.ts:176


getRelativeY()

getRelativeY(): number

Returns

number

y position according to object’s originY property in parent’s coordinate plane
if parent is canvas then this property is identical to getY

Inherited from

Polyline.getRelativeY

Defined in

src/shapes/Object/ObjectGeometry.ts:131


getScaledHeight()

getScaledHeight(): number

Returns height of an object bounding box counting transformations

Returns

number

height value

Todo

shouldn’t this account for group transform and return the actual size in canvas coordinate plane?

Inherited from

Polyline.getScaledHeight

Defined in

src/shapes/Object/ObjectGeometry.ts:361


getScaledWidth()

getScaledWidth(): number

Returns width of an object’s bounding box counting transformations

Returns

number

width value

Todo

shouldn’t this account for group transform and return the actual size in canvas coordinate plane?

Inherited from

Polyline.getScaledWidth

Defined in

src/shapes/Object/ObjectGeometry.ts:352


getSvgCommons()

getSvgCommons(this): string

Returns id attribute for svg output

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents> & object

Returns

string

Inherited from

Polyline.getSvgCommons

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:84


getSvgFilter()

getSvgFilter(this): string

Returns filter for svg shadow

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

Returns

string

Inherited from

Polyline.getSvgFilter

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:76


getSvgStyles()

getSvgStyles(this, skipShadow?): string

Returns styles-string for svg-export

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

skipShadow?: boolean

a boolean to skip shadow filter output

Returns

string

Inherited from

Polyline.getSvgStyles

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:21


getSvgTransform()

getSvgTransform(this, full?, additionalTransform?): string

Returns transform-string for svg-export

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

full?: boolean

additionalTransform?: string = ''

Returns

string

Inherited from

Polyline.getSvgTransform

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:103


getTotalAngle()

getTotalAngle(): TDegree

Returns the object angle relative to canvas counting also the group property

Returns

TDegree

Inherited from

Polyline.getTotalAngle

Defined in

src/shapes/Object/ObjectGeometry.ts:408


getTotalObjectScaling()

getTotalObjectScaling(): Point

Return the object scale factor counting also the group scaling, zoom and retina

Returns

Point

object with scaleX and scaleY properties

Inherited from

Polyline.getTotalObjectScaling

Defined in

src/shapes/Object/Object.ts:593


getViewportTransform()

getViewportTransform(): TMat2D

Retrieves viewportTransform from Object’s canvas if available

Returns

TMat2D

Inherited from

Polyline.getViewportTransform

Defined in

src/shapes/Object/ObjectGeometry.ts:418


getX()

getX(): number

Returns

number

x position according to object’s originX property in canvas coordinate plane

Inherited from

Polyline.getX

Defined in

src/shapes/Object/ObjectGeometry.ts:86


getXY()

getXY(): Point

Returns

Point

x position according to object’s originX originY properties in canvas coordinate plane

Inherited from

Polyline.getXY

Defined in

src/shapes/Object/ObjectGeometry.ts:146


getY()

getY(): number

Returns

number

y position according to object’s originY property in canvas coordinate plane

Inherited from

Polyline.getY

Defined in

src/shapes/Object/ObjectGeometry.ts:100


hasCommonAncestors()

hasCommonAncestors<T>(other): boolean

Type Parameters

T extends Polygon

Parameters

other: T

Returns

boolean

Inherited from

Polyline.hasCommonAncestors

Defined in

src/shapes/Object/Object.ts:1740


hasFill()

hasFill(): null | boolean | ""

return true if the object will draw a fill Does not consider text styles. This is just a shortcut used at rendering time We want it to be an approximation and be fast. wrote to avoid extra caching, it has to return true when fill happens, can guess when it will not happen at 100% chance, does not matter if it misses some use case where the fill is invisible.

Returns

null | boolean | ""

Boolean

Since

3.0.0

Inherited from

Polyline.hasFill

Defined in

src/shapes/Object/Object.ts:787


hasStroke()

hasStroke(): null | boolean | ""

return true if the object will draw a stroke Does not consider text styles. This is just a shortcut used at rendering time We want it to be an approximation and be fast. wrote to avoid extra caching, it has to return true when stroke happens, can guess when it will not happen at 100% chance, does not matter if it misses some use case where the stroke is invisible.

Returns

null | boolean | ""

Boolean

Since

3.0.0

Inherited from

Polyline.hasStroke

Defined in

src/shapes/Object/Object.ts:771


intersectsWithObject()

intersectsWithObject(other): boolean

Checks if object intersects with another object

Parameters

other: ObjectGeometry<ObjectEvents>

Object to test

Returns

boolean

true if object intersects with another object

Inherited from

Polyline.intersectsWithObject

Defined in

src/shapes/Object/ObjectGeometry.ts:232


intersectsWithRect()

intersectsWithRect(tl, br): boolean

Checks if object intersects with the scene rect formed by tl and br

Parameters

tl: Point

br: Point

Returns

boolean

Inherited from

Polyline.intersectsWithRect

Defined in

src/shapes/Object/ObjectGeometry.ts:218


isCacheDirty()

isCacheDirty(skipCanvas): boolean

Check if cache is dirty

Parameters

skipCanvas: boolean = false

skip canvas checks because this object is painted on parent canvas.

Returns

boolean

Inherited from

Polyline.isCacheDirty

Defined in

src/shapes/Object/Object.ts:956


isContainedWithinObject()

isContainedWithinObject(other): boolean

Checks if object is fully contained within area of another object

Parameters

other: ObjectGeometry<ObjectEvents>

Object to test

Returns

boolean

true if object is fully contained within area of another object

Inherited from

Polyline.isContainedWithinObject

Defined in

src/shapes/Object/ObjectGeometry.ts:251


isContainedWithinRect()

isContainedWithinRect(tl, br): boolean

Checks if object is fully contained within the scene rect formed by tl and br

Parameters

tl: Point

br: Point

Returns

boolean

Inherited from

Polyline.isContainedWithinRect

Defined in

src/shapes/Object/ObjectGeometry.ts:259


isControlVisible()

isControlVisible(controlKey): boolean

Returns true if the specified control is visible, false otherwise.

Parameters

controlKey: string

The key of the control. Possible values are usually ‘tl’, ‘tr’, ‘br’, ‘bl’, ‘ml’, ‘mt’, ‘mr’, ‘mb’, ‘mtr’, but since the control api allow for any control name, can be any string.

Returns

boolean

true if the specified control is visible, false otherwise

Inherited from

Polyline.isControlVisible

Defined in

src/shapes/Object/InteractiveObject.ts:584


isDescendantOf()

isDescendantOf(target): boolean

Checks if object is descendant of target Should be used instead of Group.contains or StaticCanvas.contains for performance reasons

Parameters

target: TAncestor

Returns

boolean

Inherited from

Polyline.isDescendantOf

Defined in

src/shapes/Object/Object.ts:1644


isInFrontOf()

isInFrontOf<T>(other): undefined | boolean

Type Parameters

T extends Polygon

Parameters

other: T

object to compare against

Returns

undefined | boolean

if objects do not share a common ancestor or they are strictly equal it is impossible to determine which is in front of the other; in such cases the function returns undefined

Inherited from

Polyline.isInFrontOf

Defined in

src/shapes/Object/Object.ts:1750


isNotVisible()

isNotVisible(): boolean

Returns

boolean

Inherited from

Polyline.isNotVisible

Defined in

src/shapes/Object/Object.ts:686


isOnScreen()

isOnScreen(): boolean

Checks if object is contained within the canvas with current viewportTransform the check is done stopping at first point that appears on screen

Returns

boolean

true if object is fully or partially contained within canvas

Inherited from

Polyline.isOnScreen

Defined in

src/shapes/Object/ObjectGeometry.ts:291


isOverlapping()

isOverlapping<T>(other): boolean

Type Parameters

T extends ObjectGeometry<ObjectEvents>

Parameters

other: T

Returns

boolean

Inherited from

Polyline.isOverlapping

Defined in

src/shapes/Object/ObjectGeometry.ts:269


isPartiallyOnScreen()

isPartiallyOnScreen(): boolean

Checks if object is partially contained within the canvas with current viewportTransform

Returns

boolean

true if object is partially contained within canvas

Inherited from

Polyline.isPartiallyOnScreen

Defined in

src/shapes/Object/ObjectGeometry.ts:321


isType()

isType(…types): boolean

Returns true if any of the specified types is identical to the type of an instance

Parameters

• …types: string[]

Returns

boolean

Inherited from

Polyline.isType

Defined in

src/shapes/Object/Object.ts:1449


needsItsOwnCache()

needsItsOwnCache(): boolean

When set to true, force the object to have its own cache, even if it is inside a group it may be needed when your object behave in a particular way on the cache and always needs its own isolated canvas to render correctly. Created to be overridden since 1.7.12

Returns

boolean

Boolean

Inherited from

Polyline.needsItsOwnCache

Defined in

src/shapes/Object/Object.ts:799


off()

off(eventName)

off<K>(eventName): void

Unsubscribe all event listeners for eventname. Do not use this pattern. You could kill internal fabricJS events. We know we should have protected events for internal flows, but we don’t have yet

Type Parameters

K extends keyof ObjectEvents

Parameters

eventName: K

event name (eg. ‘after:render’)

Returns

void

Inherited from

Polyline.off

Defined in

src/Observable.ts:122

off(eventName, handler)

off<K>(eventName, handler): void

unsubscribe an event listener

Type Parameters

K extends keyof ObjectEvents

Parameters

eventName: K

event name (eg. ‘after:render’)

handler: TEventCallback<any>

event listener to unsubscribe

Returns

void

Inherited from

Polyline.off

Defined in

src/Observable.ts:128

off(handlers)

off(handlers): void

unsubscribe event listeners

Parameters

handlers: EventRegistryObject<ObjectEvents>

handlers key/value pairs (eg. {‘after:render’: handler, ‘selection:cleared’: handler})

Returns

void

Inherited from

Polyline.off

Defined in

src/Observable.ts:133

off()

off(): void

unsubscribe all event listeners

Returns

void

Inherited from

Polyline.off

Defined in

src/Observable.ts:137


on()

on(eventName, handler)

on<K, E>(eventName, handler): VoidFunction

Observes specified event

Type Parameters

K extends keyof ObjectEvents

E extends TPointerEventInfo<TPointerEvent> | TPointerEventInfo<TPointerEvent> & object | TPointerEventInfo<WheelEvent> | TPointerEventInfo<TPointerEvent> & InEvent | TPointerEventInfo<TPointerEvent> & OutEvent | Partial<TEvent<TPointerEvent>> & object | Partial<TEvent<TPointerEvent>> & object | object | object | object | TEventWithTarget<DragEvent> | DragEventData | DragEventData & InEvent | DragEventData & OutEvent | DropEventData | SimpleEventHandler<Event> | BasicTransformEvent<TPointerEvent> | BasicTransformEvent<TPointerEvent> & ModifyPathEvent | ModifiedEvent<TPointerEvent>

Parameters

eventName: K

Event name (eg. ‘after:render’)

handler: TEventCallback<E>

Function that receives a notification when an event of the specified type occurs

Returns

VoidFunction

disposer

Alias

on

Inherited from

Polyline.on

Defined in

src/Observable.ts:23

on(handlers)

on(handlers): VoidFunction

Parameters

handlers: EventRegistryObject<ObjectEvents>

Returns

VoidFunction

Inherited from

Polyline.on

Defined in

src/Observable.ts:27


onDeselect()

onDeselect(_options?): boolean

This callback function is called every time _discardActiveObject or _setActiveObject try to to deselect this object. If the function returns true, the process is cancelled

Parameters

_options?

options sent from the upper functions

_options.e?: TPointerEvent

_options.object?: InteractiveFabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

Returns

boolean

Inherited from

Polyline.onDeselect

Defined in

src/shapes/Object/InteractiveObject.ts:658


onDragStart()

onDragStart(_e): boolean

Override to customize Drag behavior
Fired once a drag session has started

Parameters

_e: DragEvent

Returns

boolean

true to handle the drag event

Inherited from

Polyline.onDragStart

Defined in

src/shapes/Object/InteractiveObject.ts:691


onSelect()

onSelect(_options?): boolean

This callback function is called every time _discardActiveObject or _setActiveObject try to to select this object. If the function returns true, the process is cancelled

Parameters

_options?

options sent from the upper functions

_options.e?: TPointerEvent

event if the process is generated by an event

Returns

boolean

Inherited from

Polyline.onSelect

Defined in

src/shapes/Object/InteractiveObject.ts:672


once()

once(eventName, handler)

once<K, E>(eventName, handler): VoidFunction

Observes specified event once

Type Parameters

K extends keyof ObjectEvents

E extends TPointerEventInfo<TPointerEvent> | TPointerEventInfo<TPointerEvent> & object | TPointerEventInfo<WheelEvent> | TPointerEventInfo<TPointerEvent> & InEvent | TPointerEventInfo<TPointerEvent> & OutEvent | Partial<TEvent<TPointerEvent>> & object | Partial<TEvent<TPointerEvent>> & object | object | object | object | TEventWithTarget<DragEvent> | DragEventData | DragEventData & InEvent | DragEventData & OutEvent | DropEventData | SimpleEventHandler<Event> | BasicTransformEvent<TPointerEvent> | BasicTransformEvent<TPointerEvent> & ModifyPathEvent | ModifiedEvent<TPointerEvent>

Parameters

eventName: K

Event name (eg. ‘after:render’)

handler: TEventCallback<E>

Function that receives a notification when an event of the specified type occurs

Returns

VoidFunction

disposer

Alias

once

Inherited from

Polyline.once

Defined in

src/Observable.ts:62

once(handlers)

once(handlers): VoidFunction

Parameters

handlers: EventRegistryObject<ObjectEvents>

Returns

VoidFunction

Inherited from

Polyline.once

Defined in

src/Observable.ts:66


render()

render(ctx): void

Renders an object on a specified context

Parameters

ctx: CanvasRenderingContext2D

Context to render on

Returns

void

Inherited from

Polyline.render

Defined in

src/shapes/Object/Object.ts:698


renderCache()

renderCache(this, options?): void

Parameters

this: TCachedFabricObject<BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>>

options?: any

Returns

void

Inherited from

Polyline.renderCache

Defined in

src/shapes/Object/Object.ts:732


renderDragSourceEffect()

renderDragSourceEffect(_e): void

Override to customize drag and drop behavior render a specific effect when an object is the source of a drag event example: render the selection status for the part of text that is being dragged from a text object

Parameters

_e: DragEvent

Returns

void

Inherited from

Polyline.renderDragSourceEffect

Defined in

src/shapes/Object/InteractiveObject.ts:712


renderDropTargetEffect()

renderDropTargetEffect(_e): void

Override to customize drag and drop behavior render a specific effect when an object is the target of a drag event used to show that the underly object can receive a drop, or to show how the object will change when dropping. example: show the cursor where the text is about to be dropped

Parameters

_e: DragEvent

Returns

void

Inherited from

Polyline.renderDropTargetEffect

Defined in

src/shapes/Object/InteractiveObject.ts:724


rotate()

rotate(angle): void

Sets “angle” of an instance with centered rotation

Parameters

angle: TDegree

Angle value (in degrees)

Returns

void

Inherited from

Polyline.rotate

Defined in

src/shapes/Object/Object.ts:1477


scale()

scale(value): void

Scales an object (equally by x and y)

Parameters

value: number

Scale factor

Returns

void

Inherited from

Polyline.scale

Defined in

src/shapes/Object/ObjectGeometry.ts:370


scaleToHeight()

scaleToHeight(value): void

Scales an object to a given height, with respect to bounding box (scaling by x/y equally)

Parameters

value: number

New height value

Returns

void

Inherited from

Polyline.scaleToHeight

Defined in

src/shapes/Object/ObjectGeometry.ts:393


scaleToWidth()

scaleToWidth(value): void

Scales an object to a given width, with respect to bounding box (scaling by x/y equally)

Parameters

value: number

New width value

Returns

void

Inherited from

Polyline.scaleToWidth

Defined in

src/shapes/Object/ObjectGeometry.ts:381


set()

set(key, value?): Polygon

Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) set does not update position of object’s borders/controls. If you need to update those, call setCoords().

Parameters

key: string | Record<string, any>

Property name or object (if object, iterate over the object properties)

value?: any

Property value (if function, the value is passed into it and its return value is used as a new one)

Returns

Polygon

Inherited from

Polyline.set

Defined in

src/CommonMethods.ts:29


setBoundingBox()

setBoundingBox(adjustPosition?): void

Parameters

adjustPosition?: boolean

Returns

void

Inherited from

Polyline.setBoundingBox

Defined in

src/shapes/Polyline.ts:214


setControlVisible()

setControlVisible(controlKey, visible): void

Sets the visibility of the specified control. please do not use.

Parameters

controlKey: string

The key of the control. Possible values are ‘tl’, ‘tr’, ‘br’, ‘bl’, ‘ml’, ‘mt’, ‘mr’, ‘mb’, ‘mtr’. but since the control api allow for any control name, can be any string.

visible: boolean

true to set the specified control visible, false otherwise

Returns

void

Todo

discuss this overlap of priority here with the team. Andrea Bogazzi for details

Inherited from

Polyline.setControlVisible

Defined in

src/shapes/Object/InteractiveObject.ts:599


setControlsVisibility()

setControlsVisibility(options?): void

Sets the visibility state of object controls, this is just a bulk option for setControlVisible;

Parameters

options?: Record<string, boolean> = {}

with an optional key per control example: {Boolean} [options.bl] true to enable the bottom-left control, false to disable it

Returns

void

Inherited from

Polyline.setControlsVisibility

Defined in

src/shapes/Object/InteractiveObject.ts:611


setCoords()

setCoords(): void

set controls’ coordinates as well See https://github.com/fabricjs/fabric.js/wiki/When-to-call-setCoords and http://fabricjs.com/fabric-gotchas

Returns

void

Inherited from

Polyline.setCoords

Defined in

src/shapes/Object/InteractiveObject.ts:343


setDimensions()

setDimensions(): void

Returns

void

Inherited from

Polyline.setDimensions

Defined in

src/shapes/Polyline.ts:210


setOnGroup()

setOnGroup(): void

This callback function is called by the parent group of an object every time a non-delegated property changes on the group. It is passed the key and value as parameters. Not adding in this function’s signature to avoid Travis build error about unused variables.

Returns

void

Inherited from

Polyline.setOnGroup

Defined in

src/shapes/Object/Object.ts:1509


setPositionByOrigin()

setPositionByOrigin(pos, originX, originY): void

Sets the position of the object taking into consideration the object’s origin

Parameters

pos: Point

The new position of the object

originX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

void

Inherited from

Polyline.setPositionByOrigin

Defined in

src/shapes/Object/ObjectGeometry.ts:777


setRelativeX()

setRelativeX(value): void

Parameters

value: number

x position according to object’s originX property in parent’s coordinate plane
if parent is canvas then this method is identical to setX

Returns

void

Inherited from

Polyline.setRelativeX

Defined in

src/shapes/Object/ObjectGeometry.ts:123


setRelativeXY()

setRelativeXY(point, originX?, originY?): void

As setXY, but in current parent’s coordinate plane (the current group if any or the canvas)

Parameters

point: Point

position according to object’s originX originY properties in parent’s coordinate plane

originX?: TOriginX = ...

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY?: TOriginY = ...

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

void

Inherited from

Polyline.setRelativeXY

Defined in

src/shapes/Object/ObjectGeometry.ts:186


setRelativeY()

setRelativeY(value): void

Parameters

value: number

y position according to object’s originY property in parent’s coordinate plane
if parent is canvas then this property is identical to setY

Returns

void

Inherited from

Polyline.setRelativeY

Defined in

src/shapes/Object/ObjectGeometry.ts:139


setX()

setX(value): void

Parameters

value: number

x position according to object’s originX property in canvas coordinate plane

Returns

void

Inherited from

Polyline.setX

Defined in

src/shapes/Object/ObjectGeometry.ts:93


setXY()

setXY(point, originX?, originY?): void

Set an object position to a particular point, the point is intended in absolute ( canvas ) coordinate. You can specify originX and originY values, that otherwise are the object’s current values.

Parameters

point: Point

position in scene coordinate plane

originX?: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY?: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

void

Example

object.setXY(new Point(5, 5), 'left', 'bottom').

Inherited from

Polyline.setXY

Defined in

src/shapes/Object/ObjectGeometry.ts:163


setY()

setY(value): void

Parameters

value: number

y position according to object’s originY property in canvas coordinate plane

Returns

void

Inherited from

Polyline.setY

Defined in

src/shapes/Object/ObjectGeometry.ts:107


shouldCache()

shouldCache(): boolean

Decide if the object should cache or not. Create its own cache level objectCaching is a global flag, wins over everything needsItsOwnCache should be used when the object drawing method requires a cache step. None of the fabric classes requires it. Generally you do not cache objects in groups because the group outside is cached. Read as: cache if is needed, or if the feature is enabled but we are not already caching.

Returns

boolean

Inherited from

Polyline.shouldCache

Defined in

src/shapes/Object/Object.ts:823


shouldStartDragging()

shouldStartDragging(_e): boolean

Override to customize Drag behavior Fired from Canvas#_onMouseMove

Parameters

_e: TPointerEvent

Returns

boolean

true in order for the window to start a drag session

Inherited from

Polyline.shouldStartDragging

Defined in

src/shapes/Object/InteractiveObject.ts:682


strokeBorders()

strokeBorders(ctx, size): void

override this function in order to customize the drawing of the control box, e.g. rounded corners, different border style.

Parameters

ctx: CanvasRenderingContext2D

ctx is rotated and translated so that (0,0) is at object’s center

size: Point

the control box size used

Returns

void

Inherited from

Polyline.strokeBorders

Defined in

src/shapes/Object/InteractiveObject.ts:399


toCanvasElement()

toCanvasElement(options): HTMLCanvasElement

Converts an object into a HTMLCanvas element

Parameters

options: ObjectToCanvasElementOptions = {}

Options object

Returns

HTMLCanvasElement

Returns DOM element with the FabricObject

Inherited from

Polyline.toCanvasElement

Defined in

src/shapes/Object/Object.ts:1340


toClipPathSVG()

toClipPathSVG(this, reviver?): string

Returns svg clipPath representation of an instance

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

reviver?: TSVGReviver

Method for further parsing of svg representation.

Returns

string

svg representation of an instance

Inherited from

Polyline.toClipPathSVG

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:143


toDataURL()

toDataURL(options): string

Converts an object into a data-url-like string

Parameters

options: toDataURLOptions = {}

Options object

Returns

string

Returns a data: URL containing a representation of the object in the format specified by options.format

Inherited from

Polyline.toDataURL

Defined in

src/shapes/Object/Object.ts:1436


toDatalessObject()

toDatalessObject(propertiesToInclude?): any

Returns (dataless) object representation of an instance

Parameters

propertiesToInclude?: any[]

Any properties that you might want to additionally include in the output

Returns

any

Object representation of an instance

Inherited from

Polyline.toDatalessObject

Defined in

src/shapes/Object/Object.ts:1884


toJSON()

toJSON(): any

Returns a JSON representation of an instance

Returns

any

JSON

Inherited from

Polyline.toJSON

Defined in

src/shapes/Object/Object.ts:1468


toObject()

toObject<T, K>(propertiesToInclude?): Pick<T, K> & SerializedPolylineProps

Returns object representation of an instance

Type Parameters

T extends Omit<Partial<FabricObjectProps> & TClassProperties<Polygon>, keyof SerializedPolylineProps>

K extends string | number | symbol = never

Parameters

propertiesToInclude?: K[] = []

Any properties that you might want to additionally include in the output

Returns

Pick<T, K> & SerializedPolylineProps

Object representation of an instance

Inherited from

Polyline.toObject

Defined in

src/shapes/Polyline.ts:311


toSVG()

toSVG(this, reviver?): string

Returns svg representation of an instance

Parameters

this: FabricObjectSVGExportMixin & FabricObject<Partial<FabricObjectProps>, SerializedObjectProps, ObjectEvents>

reviver?: TSVGReviver

Method for further parsing of svg representation.

Returns

string

svg representation of an instance

Inherited from

Polyline.toSVG

Defined in

src/shapes/Object/FabricObjectSVGExportMixin.ts:129


toString()

toString(): string

Returns a string representation of an instance

Returns

string

Inherited from

Polyline.toString

Defined in

src/shapes/Object/Object.ts:1924


toggle()

toggle(property): Polygon

Toggles specified property from true to false or from false to true

Parameters

property: string

Property to toggle

Returns

Polygon

Inherited from

Polyline.toggle

Defined in

src/CommonMethods.ts:46


transform()

transform(ctx): void

Transforms context when rendering an object

Parameters

ctx: CanvasRenderingContext2D

Context

Returns

void

Inherited from

Polyline.transform

Defined in

src/shapes/Object/Object.ts:564


transformMatrixKey()

transformMatrixKey(skipGroup): number[]

Parameters

skipGroup: boolean = false

Returns

number[]

Inherited from

Polyline.transformMatrixKey

Defined in

src/shapes/Object/ObjectGeometry.ts:453


translateToCenterPoint()

translateToCenterPoint(point, originX, originY): Point

Translates the coordinates from origin to center coordinates (based on the object’s dimensions)

Parameters

point: Point

The point which corresponds to the originX and originY params

originX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

Point

Inherited from

Polyline.translateToCenterPoint

Defined in

src/shapes/Object/ObjectGeometry.ts:682


translateToGivenOrigin()

translateToGivenOrigin(point, fromOriginX, fromOriginY, toOriginX, toOriginY): Point

Translates the coordinates from a set of origin to another (based on the object’s dimensions)

Parameters

point: Point

The point which corresponds to the originX and originY params

fromOriginX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

fromOriginY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

toOriginX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

toOriginY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

Point

Inherited from

Polyline.translateToGivenOrigin

Defined in

src/shapes/Object/ObjectGeometry.ts:654


translateToOriginPoint()

translateToOriginPoint(center, originX, originY): Point

Translates the coordinates from center to origin coordinates (based on the object’s dimensions)

Parameters

center: Point

The point which corresponds to center of the object

originX: TOriginX

Horizontal origin: ‘left’, ‘center’ or ‘right’

originY: TOriginY

Vertical origin: ‘top’, ‘center’ or ‘bottom’

Returns

Point

Inherited from

Polyline.translateToOriginPoint

Defined in

src/shapes/Object/ObjectGeometry.ts:710


willDrawShadow()

willDrawShadow(): boolean

Check if this object will cast a shadow with an offset. used by Group.shouldCache to know if child has a shadow recursively

Returns

boolean

Inherited from

Polyline.willDrawShadow

Defined in

src/shapes/Object/Object.ts:836


_fromObject()

static _fromObject<S>(__namedParameters, __namedParameters): Promise<S>

Type Parameters

S extends BaseFabricObject<Partial<ObjectProps>, SerializedObjectProps, ObjectEvents>

Parameters

__namedParameters: Record<string, unknown>

__namedParameters: Abortable & object = {}

Returns

Promise<S>

Inherited from

Polyline._fromObject

Defined in

src/shapes/Object/Object.ts:1937


createControls()

static createControls(): object

Creates the default control object. If you prefer to have on instance of controls shared among all objects make this function return an empty object and add controls to the ownDefaults

Returns

object

controls

controls: Record<string, Control>

Inherited from

Polyline.createControls

Defined in

src/shapes/Object/InteractiveObject.ts:167


fromElement()

static fromElement(element, options?, cssRules?): Promise<Polyline<object, SerializedPolylineProps, ObjectEvents>>

Returns Polyline instance from an SVG element

Parameters

element: HTMLElement

Element to parser

options?: Abortable

Options object

cssRules?: CSSRules

Returns

Promise<Polyline<object, SerializedPolylineProps, ObjectEvents>>

Static

Member Of

Polyline

Inherited from

Polyline.fromElement

Defined in

src/shapes/Polyline.ts:400


fromObject()

static fromObject<T>(object): Promise<Polyline<Partial<FabricObjectProps>, SerializedPolylineProps, ObjectEvents>>

Returns Polyline instance from an object representation

Type Parameters

T extends TOptions<SerializedPolylineProps>

Parameters

object: T

Object to create an instance from

Returns

Promise<Polyline<Partial<FabricObjectProps>, SerializedPolylineProps, ObjectEvents>>

Static

Member Of

Polyline

Inherited from

Polyline.fromObject

Defined in

src/shapes/Polyline.ts:428


getDefaults()

static getDefaults(): Record<string, any>

Returns

Record<string, any>

Inherited from

Polyline.getDefaults

Defined in

src/shapes/Polyline.ts:69