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React Native Canvas View

An iOS-only* React Native component implementing a drawable canvas. Allows for explicit controlled behavior (using paths and active={false}) or allow the view to take care of user input itself.

Props

  • active:boolean - Enable/disable the view's drawing capabilities (disable for controlled use)
  • strokeColor:number - Sets the canvas stroke to the given react-native compatible color
  • strokeWidth:number - Sets the width
  • paths:[Path] - Explicitly set the paths drawn on the canvas (allows for a controlled canvas)

ViewSnapshot Module

The actual react component (see the components directory) takes care of any extra effort in taking a photo of the canvas.

ViewSnapshot.getSnapshot(:reactNativeViewId) => Promise.resolve(dataURL)

Given the React Native view ID, this method returns a promise which resolves with the view's snapshot (as a data URL).

Path

Paths can be used if you'd like to manage the user input yourself

{
  color: strokeColor:number,
  width: strokeWidth:number,
  points:[{ x:number, y:number }]
}

screencap

note

I made this for a personal unpublished application, but figured someone else may find it useful, as the React Native module AND component process is a pain (and slightly moreso if Swift is involved).