forked from shadowfacts/Tusker
Construct PKToolPicker ourselves
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2fe19a5abe
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@ -23,6 +23,8 @@ class ComposeDrawingViewController: UIViewController {
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private(set) var undoBarButtonItem: UIBarButtonItem!
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private(set) var redoBarButtonItem: UIBarButtonItem!
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private var toolPicker: PKToolPicker!
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private var initialDrawing: PKDrawing?
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init() {
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@ -70,25 +72,19 @@ class ComposeDrawingViewController: UIViewController {
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canvasView.topAnchor.constraint(equalTo: view.topAnchor),
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canvasView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
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])
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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// todo: should the PKToolPicker be owned by this VC or something else?
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if let window = parent?.view.window, let toolPicker = PKToolPicker.shared(for: window) {
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toolPicker.setVisible(true, forFirstResponder: canvasView)
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toolPicker.addObserver(canvasView)
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toolPicker.addObserver(self)
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updateLayout(for: toolPicker)
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canvasView.becomeFirstResponder()
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// wait until the next run loop iteration so that the canvas view has become first responder and it's undo manager exists
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DispatchQueue.main.async {
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NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidUndoChange, object: self.undoManager!)
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NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidRedoChange, object: self.undoManager!)
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}
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toolPicker = PKToolPicker()
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toolPicker.setVisible(true, forFirstResponder: canvasView)
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toolPicker.addObserver(canvasView)
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toolPicker.addObserver(self)
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updateLayout(for: toolPicker)
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canvasView.becomeFirstResponder()
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// wait until the next run loop iteration so that the canvas view has become first responder and it's undo manager exists
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DispatchQueue.main.async {
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NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidUndoChange, object: self.undoManager!)
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NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidRedoChange, object: self.undoManager!)
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}
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}
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