CODEWITHSUNDEEP
swiftpencilkit
Munkhsoyol Ganbat
Munkhsoyol Ganbat

Reputation: 109

How to disable pencil drawing in PKCanvasView of PencilKit, just for viewing purpose

I successfully created PKCanvasView in my view and make it work to draw in there. But how to disable drawing in PKCanvasView for some purposes like viewing mode only.

Is it possible to disable drawing with both pencil and finger in PKCanvasView?

I can disable finger drawing with just setting the variable allowsFingerDrawing false, but I want to disable pencil too.

Upvotes: 4

Views: 2768

Answers (3)

Log.O
Log.O

Reputation: 131

The solution - canvasView.isUserInteractionEnabled = false - will also disable the scrolling features of the canvaseView.

A better solution could simply disable the drawing gesture

self.canvasView.drawingGestureRecognizer.isEnabled = false

This will turn off both pen and finger drawing but keep the scroll view features available.

Upvotes: 6

Marcy
Marcy

Reputation: 6059

Applies to iOS 13 and iOS 14

To answer your question, iOS 14's drawingPolicy did not provide a 'noInput' option. But an easy alternative would be to set isUserInteractionEnabled.

For example, a PKCanvasView that is declared as canvasView could be set with isUserInteractionEnabled to restrict all input:

canvasView.isUserInteractionEnabled = false

When the user is in pencil-only mode, this will also restrict the finger's long-press from inserting white space, cutting, copying, deleting, and duplicating.

Setting isUserInteractionEnabled will also restrict the two-finger scrolling on the canvas.

Upvotes: 3

Adam Meyer
Adam Meyer

Reputation: 1525

If you access the PKDrawing on the PKCanvasView you can call "imageFromRect" - This will return a UIImage that you can place on the screen for viewing without it being editable.

Upvotes: 0

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