React Native Pencil Kit is a full API support iOS PencilKit framework porting.

Getting Started

yarn add react-native-pencil-kit

Link PencilKit.framework in the Xcode application project settings

With Fabric, we should access c++ functions and we should use objective-c++. This prevents us from Apple SDK framework module importing and we cannot link PencilKit automatically at now.

Usage

import PencilKitView, { type PencilKitRef, type PencilKitTool } from 'react-native-pencil-kit';

<PencilKitView style={{ flex: 1 }} />

[!NOTE] You can explorer full example! Full Example

Props

| Props | Description | Default | |-----------------------------------|--------------------------------------------------------------------------------------------------------------------------------|---------| | alwaysBounceVertical | A Boolean value that determines whether bouncing always occurs when vertical scrolling reaches the end of the content. | true | | alwaysBounceHorizontal | A Boolean value that determines whether bouncing always occurs when horizontal scrolling reaches the end of the content view. | true | | isRulerActive | A Boolean value that indicates whether a ruler view is visible on the canvas. | true | | drawingPolicy | The policy that controls the types of touches allowed when drawing on the canvas. This properties can be applied from iOS 14.0 | default | | backgroundColor | The canvas background color | none | | isOpaque | Whether the canvas is opaque | true | | toolPickerVisibilityDidChange | Tells the delegate that the tool picker UI changed visibility. | | | toolPickerIsRulerActiveDidChange | Tells the delegate that the ruler active state was changed by the user. | | | toolPickerFramesObscuredDidChange | Tells the delegate that the frames the tool picker obscures changed. | | | toolPickerSelectedToolDidChange | Tells the delegate that the selected tool was changed by the user. | | | canvasViewDidBeginUsingTool | Called when the user starts using a tool, eg. selecting, drawing, or erasing. | | | canvasViewDidEndUsingTool | Called when the user stops using a tool, eg. selecting, drawing, or erasing. | | | canvasViewDrawingDidChange | Called after the drawing on the canvas did change. | | | canvasViewDidFinishRendering | Called after setting drawing when the entire drawing is rendered and visible. | |

Commands

| Method | Description | Etc | |------------------------------------------------------------------------------------------|--------------------------------------------------------|------------------------------------------------------------------------------------| | clear(): void | Clear canvas | | | showToolPicker(): void | Show Palette | | | hideToolPicker(): void | Hide Palette | | | redo(): void | Redo last drawing action | | | undo(): void | Undo last drawing action | | | saveDrawing(path: string): Promise<string> | Save drawing data into file system, return base64 data | | | getBase64Data(): Promise<string> | Get current drawing data as base64 string form | | | getBase64PngData(options: { scale?: number }): Promise<string> | Get current drawing data as base64 png form | scale = 0 means use default UIScreen.main.scale | | getBase64JpegData(options: { scale?: number; compression?: number }): Promise<string> | Get current drawing data as base64 jpeg form | scale = 0 means use default UIScreen.main.scale. default compression is 0.93 | | loadDrawing(path: string): Promise<void> | Load drawing data from file system | | | loadBase64Data(base64: string): Promise<void> | Load base64 drawing data into canvas | Use base64 get from getBase64Data() | | setTool(params: { toolType: PencilKitTool; width?: number; color?: ColorValue }): void | Set PencilKitTool type with width and color | |

Tools

- pen
- pencil
- marker
- monoline // ios 17
- fountainPen // ios 17
- watercolor // ios 17
- crayon // ios 17
- eraserVector // width is supported from 16.4
- eraserBitmap // width is supported from 16.4
- eraserFixedWidthBitmap // ios 16.4

Utils

Use PencilKitUtil for using utilty functions.

• getAvailableTools(): string[]
• isPencilKitAvailable(): boolean

Troubleshooting

• Pencilkit is not rendered
  • This package supports only equal or greater than 14.0 version.
  • This package supports only Fabric.

Contributing

• Contributing
• Issues
• PRs
• Code of Conduct

License

• See LICENSE