Class EraserTool

A tool that allows a user to erase parts of an image.

Hierarchy (view full)

BaseTool
- EraserTool

Constructors

constructor

new EraserTool(editor, description, options?): EraserTool
Parameters
- editor: Editor
- description: string
- Optionaloptions: InitialEraserOptions
Returns EraserTool
Overrides BaseTool.constructor
- Defined in tools/Eraser.ts:96

Properties

`Readonly`description

description: string

Methods

canReceiveInputInReadOnlyEditor

canReceiveInputInReadOnlyEditor(): boolean
Override this to allow this tool to be enabled in a read-only editor

Returns boolean
Inherited from BaseTool.canReceiveInputInReadOnlyEditor
- Defined in tools/BaseTool.ts:37

enabledValue

enabledValue(): ReactiveValue<boolean>
Returns a ReactiveValue that updates based on whether this tool is enabled.

Returns ReactiveValue<boolean>
Example
```
const tool = new SomeTool();

// Watch for changes in enabled status
tool.enabledValue().onUpdate(enabled => doSomething(enabled));
```
Inherited from BaseTool.enabledValue
- Defined in tools/BaseTool.ts:162

getInputMapper

getInputMapper(): null | InputMapper
Returns null | InputMapper
Inherited from BaseTool.getInputMapper
- Defined in tools/BaseTool.ts:48

getModeValue

getModeValue(): MutableReactiveValue<EraserMode>
Returns MutableReactiveValue<EraserMode>
An object that allows switching between a full stroke and a partial stroke eraser.
- Defined in tools/Eraser.ts:364

getThickness

getThickness(): number
Returns the side-length of the tip of this eraser.

Returns number
- Defined in tools/Eraser.ts:346

getThicknessValue

getThicknessValue(): MutableReactiveValue<number>
Returns a MutableReactiveValue that can be used to watch this tool's thickness.

Returns MutableReactiveValue<number>
- Defined in tools/Eraser.ts:359

getToolGroup

getToolGroup(): null | ToolEnabledGroup
Returns null | ToolEnabledGroup
Inherited from BaseTool.getToolGroup
- Defined in tools/BaseTool.ts:176

isEnabled

isEnabled(): boolean
Returns boolean
Inherited from BaseTool.isEnabled
- Defined in tools/BaseTool.ts:146

makeEraserSwitcherTool

makeEraserSwitcherTool(): BaseTool
Returns BaseTool
a tool that briefly enables the eraser when a physical eraser is used. This tool should be added to the tool list after the primary tools.
- Defined in tools/Eraser.ts:123

onContextMenu

onContextMenu(_event): boolean
Parameters
- _event: ContextMenuEvt
Returns boolean
Inherited from BaseTool.onContextMenu
- Defined in tools/BaseTool.ts:129

onCopy

onCopy(_event): boolean
Parameters
- _event: CopyEvent
Returns boolean
Inherited from BaseTool.onCopy
- Defined in tools/BaseTool.ts:113

onDestroy

onDestroy(): void
Called when the tool is removed/when the editor is destroyed. Subclasses that override this method must call super.onDestroy().

Returns void
Inherited from BaseTool.onDestroy
- Defined in tools/BaseTool.ts:186

onGestureCancel

onGestureCancel(_event): void
Parameters
- _event: GestureCancelEvt
Returns void
Overrides BaseTool.onGestureCancel
- Defined in tools/Eraser.ts:317

onKeyPress

onKeyPress(event): boolean
Parameters
- event: KeyPressEvent
Returns boolean
Overrides BaseTool.onKeyPress
- Defined in tools/Eraser.ts:326

onKeyUp

onKeyUp(_event): boolean
Parameters
- _event: KeyUpEvent
Returns boolean
Inherited from BaseTool.onKeyUp
- Defined in tools/BaseTool.ts:125

onPaste

onPaste(_event): boolean
Parameters
- _event: PasteEvent
Returns boolean
Inherited from BaseTool.onPaste
- Defined in tools/BaseTool.ts:117

onPointerDown

onPointerDown(event): boolean
Returns true iff the tool handled the event and thus should receive additional events.
Parameters
- event: PointerEvt
Returns boolean
Overrides BaseTool.onPointerDown
- Defined in tools/Eraser.ts:251

onPointerMove

onPointerMove(event): void
Parameters
- event: PointerEvt
Returns void
Overrides BaseTool.onPointerMove
- Defined in tools/Eraser.ts:265

onPointerUp

onPointerUp(event): void
Returns true iff there are additional pointers down and the tool should remain active to handle the additional events.

For most purposes, this should return false or nothing.
Parameters
- event: PointerEvt
Returns void
Overrides BaseTool.onPointerUp
- Defined in tools/Eraser.ts:271

onWheel

onWheel(_event): boolean
Parameters
- _event: WheelEvt
Returns boolean
Inherited from BaseTool.onWheel
- Defined in tools/BaseTool.ts:109

setEnabled

setEnabled(enabled): void
Parameters
- enabled: boolean
Returns void
Inherited from BaseTool.setEnabled
- Defined in tools/BaseTool.ts:142

setInputMapper

setInputMapper(mapper): void
Parameters
- mapper: null | InputMapper
Returns void
Inherited from BaseTool.setInputMapper
- Defined in tools/BaseTool.ts:41

setThickness

setThickness(thickness): void
Sets the side-length of this' tip.
Parameters
- thickness: number
Returns void
- Defined in tools/Eraser.ts:351

setToolGroup

setToolGroup(group): void
Connect this tool to a set of other tools, ensuring that at most one of the tools in the group is enabled.
Parameters
- group: ToolEnabledGroup
Returns void
Inherited from BaseTool.setToolGroup
- Defined in tools/BaseTool.ts:168

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