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Added callback method 'onMatrixUpdateEnd:' #20

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Added callback method 'onMatrixUpdateEnd:' #20

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13 changes: 12 additions & 1 deletion lib/matrix_gesture_detector.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,10 @@ class MatrixGestureDetector extends StatefulWidget {
/// [Matrix4] change notification callback
///
final MatrixGestureDetectorCallback onMatrixUpdate;
///
/// Callback to notify the update ended.
///
final Function onMatrixUpdateEnd;

/// The [child] contained by this detector.
///
Expand Down Expand Up @@ -65,6 +69,7 @@ class MatrixGestureDetector extends StatefulWidget {
this.shouldRotate = true,
this.clipChild = true,
this.focalPointAlignment,
this.onMatrixUpdateEnd
}) : assert(onMatrixUpdate != null),
assert(child != null),
super(key: key);
Expand Down Expand Up @@ -111,10 +116,11 @@ class _MatrixGestureDetectorState extends State<MatrixGestureDetector> {
@override
Widget build(BuildContext context) {
Widget child =
widget.clipChild ? ClipRect(child: widget.child) : widget.child;
widget.clipChild ? ClipRect(child: widget.child) : widget.child;
return GestureDetector(
onScaleStart: onScaleStart,
onScaleUpdate: onScaleUpdate,
onScaleEnd: onScaleEnd,
child: child,
);
}
Expand All @@ -135,6 +141,11 @@ class _MatrixGestureDetectorState extends State<MatrixGestureDetector> {
scaleUpdater.value = 1.0;
}

void onScaleEnd(ScaleEndDetails details){
if(widget.onMatrixUpdateEnd!= null)
widget.onMatrixUpdateEnd(details);
}

void onScaleUpdate(ScaleUpdateDetails details) {
translationDeltaMatrix = Matrix4.identity();
scaleDeltaMatrix = Matrix4.identity();
Expand Down