adjust kScaleSlop
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7fe8b2cee7
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811265554a
@ -10,7 +10,8 @@ enum CustomTouchGestureState {
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twoFingerHorizontalDrag,
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}
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const kScaleSlop = kPrecisePointerPanSlop / 15;
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// Adjust Carefully! balance vertical and pan
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const kScaleSlop = kPrecisePointerPanSlop / 28;
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class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
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CustomTouchGestureRecognizer({
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@ -154,8 +155,16 @@ class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
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_sumScale += d.scale - 1;
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_sumHorizontal += d.focalPointDelta.dx;
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_sumVertical += d.focalPointDelta.dy;
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// start
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if (onTwoFingerVerticalDragUpdate != null &&
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// start , order is important
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if (onTwoFingerScaleUpdate != null && _sumScale.abs() > kScaleSlop) {
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debugPrint("start Scale");
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_currentState = CustomTouchGestureState.twoFingerScale;
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if (onTwoFingerScaleStart != null) {
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onTwoFingerScaleStart!(ScaleStartDetails(
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localFocalPoint: d.localFocalPoint, focalPoint: d.focalPoint));
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}
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_reset();
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} else if (onTwoFingerVerticalDragUpdate != null &&
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_sumVertical.abs() > kPrecisePointerPanSlop &&
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_sumHorizontal.abs() < kPrecisePointerPanSlop) {
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debugPrint("start Vertical");
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@ -164,14 +173,6 @@ class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
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}
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_currentState = CustomTouchGestureState.twoFingerVerticalDrag;
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_reset();
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} else if (onTwoFingerScaleUpdate != null && _sumScale.abs() > kScaleSlop) {
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debugPrint("start Scale");
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_currentState = CustomTouchGestureState.twoFingerScale;
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if (onTwoFingerScaleStart != null) {
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onTwoFingerScaleStart!(ScaleStartDetails(
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localFocalPoint: d.localFocalPoint, focalPoint: d.focalPoint));
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}
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_reset();
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}
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}
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