mirror of
https://github.com/rustdesk/rustdesk.git
synced 2024-12-23 01:47:50 +08:00
790 lines
23 KiB
Dart
790 lines
23 KiB
Dart
import 'dart:async';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/widgets.dart';
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enum CustomTouchGestureState {
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none,
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oneFingerPan,
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twoFingerScale,
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twoFingerVerticalDrag,
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twoFingerHorizontalDrag,
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}
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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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Object? debugOwner,
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Set<PointerDeviceKind>? supportedDevices,
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}) : super(
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debugOwner: debugOwner,
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supportedDevices: supportedDevices,
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) {
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_init();
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}
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// oneFingerPan
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GestureDragStartCallback? onOneFingerPanStart;
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GestureDragUpdateCallback? onOneFingerPanUpdate;
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GestureDragEndCallback? onOneFingerPanEnd;
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// twoFingerScale : scale + pan event
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GestureScaleStartCallback? onTwoFingerScaleStart;
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GestureScaleUpdateCallback? onTwoFingerScaleUpdate;
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GestureScaleEndCallback? onTwoFingerScaleEnd;
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// twoFingerVerticalDrag
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GestureDragStartCallback? onTwoFingerVerticalDragStart;
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GestureDragUpdateCallback? onTwoFingerVerticalDragUpdate;
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GestureDragEndCallback? onTwoFingerVerticalDragEnd;
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// twoFingerHorizontalDrag
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GestureDragStartCallback? onTwoFingerHorizontalDragStart;
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GestureDragUpdateCallback? onTwoFingerHorizontalDragUpdate;
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GestureDragEndCallback? onTwoFingerHorizontalDragEnd;
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void _init() {
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debugPrint("CustomTouchGestureRecognizer init");
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onStart = (d) {
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if (d.pointerCount == 1) {
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_currentState = CustomTouchGestureState.oneFingerPan;
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if (onOneFingerPanStart != null) {
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onOneFingerPanStart!(DragStartDetails(
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localPosition: d.localFocalPoint, globalPosition: d.focalPoint));
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}
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debugPrint("start pan");
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} else if (d.pointerCount == 2) {
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_currentState = CustomTouchGestureState.none;
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startWatchTimer();
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} else {
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_currentState = CustomTouchGestureState.none;
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_reset();
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}
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};
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onUpdate = (d) {
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if (_isWatch) {
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_updateCompute(d);
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return;
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}
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if (_currentState != CustomTouchGestureState.none) {
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switch (_currentState) {
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case CustomTouchGestureState.oneFingerPan:
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if (onOneFingerPanUpdate != null) {
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onOneFingerPanUpdate!(_getDragUpdateDetails(d));
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}
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break;
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case CustomTouchGestureState.twoFingerScale:
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if (onTwoFingerScaleUpdate != null) {
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onTwoFingerScaleUpdate!(d);
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}
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break;
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case CustomTouchGestureState.twoFingerHorizontalDrag:
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if (onTwoFingerHorizontalDragUpdate != null) {
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onTwoFingerHorizontalDragUpdate!(_getDragUpdateDetails(d));
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}
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break;
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case CustomTouchGestureState.twoFingerVerticalDrag:
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if (onTwoFingerVerticalDragUpdate != null) {
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onTwoFingerVerticalDragUpdate!(_getDragUpdateDetails(d));
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}
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break;
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default:
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break;
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}
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return;
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}
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};
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onEnd = (d) {
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debugPrint("ScaleGestureRecognizer onEnd");
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// end
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switch (_currentState) {
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case CustomTouchGestureState.oneFingerPan:
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debugPrint("TwoFingerState.pan onEnd");
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if (onOneFingerPanEnd != null) {
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onOneFingerPanEnd!(_getDragEndDetails(d));
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}
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break;
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case CustomTouchGestureState.twoFingerScale:
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debugPrint("TwoFingerState.scale onEnd");
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if (onTwoFingerScaleEnd != null) {
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onTwoFingerScaleEnd!(d);
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}
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break;
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case CustomTouchGestureState.twoFingerHorizontalDrag:
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debugPrint("TwoFingerState.horizontal onEnd");
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if (onTwoFingerHorizontalDragEnd != null) {
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onTwoFingerHorizontalDragEnd!(_getDragEndDetails(d));
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}
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break;
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case CustomTouchGestureState.twoFingerVerticalDrag:
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debugPrint("TwoFingerState.vertical onEnd");
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if (onTwoFingerVerticalDragEnd != null) {
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onTwoFingerVerticalDragEnd!(_getDragEndDetails(d));
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}
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break;
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default:
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break;
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}
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_currentState = CustomTouchGestureState.none;
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_reset();
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};
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}
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var _currentState = CustomTouchGestureState.none;
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var _isWatch = false;
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Timer? _timer;
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double _sumScale = 0;
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double _sumVertical = 0;
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double _sumHorizontal = 0;
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void _clearSum() {
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_sumScale = 0;
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_sumVertical = 0;
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_sumHorizontal = 0;
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}
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void _reset() {
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_isWatch = false;
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_clearSum();
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if (_timer != null) _timer!.cancel();
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}
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void _updateCompute(ScaleUpdateDetails d) {
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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 , 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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if (onTwoFingerVerticalDragStart != null) {
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onTwoFingerVerticalDragStart!(_getDragStartDetails(d));
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}
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_currentState = CustomTouchGestureState.twoFingerVerticalDrag;
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_reset();
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}
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}
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void startWatchTimer() {
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debugPrint("startWatchTimer");
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_isWatch = true;
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_clearSum();
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if (_timer != null) _timer!.cancel();
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_timer = Timer(const Duration(milliseconds: 200), _reset);
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}
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DragStartDetails _getDragStartDetails(ScaleUpdateDetails d) =>
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DragStartDetails(
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globalPosition: d.focalPoint,
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localPosition: d.localFocalPoint,
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);
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DragUpdateDetails _getDragUpdateDetails(ScaleUpdateDetails d) =>
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DragUpdateDetails(
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globalPosition: d.focalPoint,
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localPosition: d.localFocalPoint,
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delta: d.focalPointDelta);
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DragEndDetails _getDragEndDetails(ScaleEndDetails d) =>
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DragEndDetails(velocity: d.velocity);
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}
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class HoldTapMoveGestureRecognizer extends GestureRecognizer {
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HoldTapMoveGestureRecognizer({
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Object? debugOwner,
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Set<PointerDeviceKind>? supportedDevices,
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}) : super(
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debugOwner: debugOwner,
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supportedDevices: supportedDevices,
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);
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GestureDragStartCallback? onHoldDragStart;
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GestureDragUpdateCallback? onHoldDragUpdate;
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GestureDragDownCallback? onHoldDragDown;
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GestureDragCancelCallback? onHoldDragCancel;
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GestureDragEndCallback? onHoldDragEnd;
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bool _isStart = false;
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Timer? _firstTapUpTimer;
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Timer? _secondTapDownTimer;
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_TapTracker? _firstTap;
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_TapTracker? _secondTap;
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final Map<int, _TapTracker> _trackers = <int, _TapTracker>{};
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@override
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bool isPointerAllowed(PointerDownEvent event) {
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if (_firstTap == null) {
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switch (event.buttons) {
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case kPrimaryButton:
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if (onHoldDragStart == null &&
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onHoldDragUpdate == null &&
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onHoldDragCancel == null &&
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onHoldDragEnd == null) {
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return false;
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}
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break;
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default:
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return false;
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}
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}
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return super.isPointerAllowed(event);
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}
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@override
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void addAllowedPointer(PointerDownEvent event) {
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if (_firstTap != null) {
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if (!_firstTap!.isWithinGlobalTolerance(event, kDoubleTapSlop)) {
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// Ignore out-of-bounds second taps.
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return;
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} else if (!_firstTap!.hasElapsedMinTime() ||
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!_firstTap!.hasSameButton(event)) {
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// Restart when the second tap is too close to the first (touch screens
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// often detect touches intermittently), or when buttons mismatch.
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_reset();
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return _trackTap(event);
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} else if (onHoldDragDown != null) {
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invokeCallback<void>(
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'onHoldDragDown',
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() => onHoldDragDown!(DragDownDetails(
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globalPosition: event.position,
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localPosition: event.localPosition)));
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}
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}
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_trackTap(event);
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}
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void _trackTap(PointerDownEvent event) {
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_stopFirstTapUpTimer();
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_stopSecondTapDownTimer();
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final _TapTracker tracker = _TapTracker(
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event: event,
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entry: GestureBinding.instance!.gestureArena.add(event.pointer, this),
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doubleTapMinTime: kDoubleTapMinTime,
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gestureSettings: gestureSettings,
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);
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_trackers[event.pointer] = tracker;
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tracker.startTrackingPointer(_handleEvent, event.transform);
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}
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void _handleEvent(PointerEvent event) {
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final _TapTracker tracker = _trackers[event.pointer]!;
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if (event is PointerUpEvent) {
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if (_firstTap == null && _secondTap == null) {
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_registerFirstTap(tracker);
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} else if (_secondTap != null) {
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if (event.pointer == _secondTap!.pointer) {
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if (onHoldDragEnd != null) onHoldDragEnd!(DragEndDetails());
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}
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} else {
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_reject(tracker);
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}
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} else if (event is PointerDownEvent) {
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if (_firstTap != null && _secondTap == null) {
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_registerSecondTap(tracker);
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}
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} else if (event is PointerMoveEvent) {
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if (!tracker.isWithinGlobalTolerance(event, kDoubleTapTouchSlop)) {
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if (_firstTap != null && _firstTap!.pointer == event.pointer) {
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// first tap move
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_reject(tracker);
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} else if (_secondTap != null && _secondTap!.pointer == event.pointer) {
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// debugPrint("_secondTap move");
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// second tap move
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if (!_isStart) {
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_resolve();
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}
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if (onHoldDragUpdate != null)
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onHoldDragUpdate!(DragUpdateDetails(
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globalPosition: event.position,
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localPosition: event.localPosition,
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delta: event.delta));
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}
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}
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} else if (event is PointerCancelEvent) {
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_reject(tracker);
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}
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}
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@override
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void acceptGesture(int pointer) {}
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@override
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void rejectGesture(int pointer) {
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_TapTracker? tracker = _trackers[pointer];
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// If tracker isn't in the list, check if this is the first tap tracker
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if (tracker == null && _firstTap != null && _firstTap!.pointer == pointer) {
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tracker = _firstTap;
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}
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// If tracker is still null, we rejected ourselves already
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if (tracker != null) {
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_reject(tracker);
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}
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}
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void _resolve() {
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_stopSecondTapDownTimer();
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_firstTap?.entry.resolve(GestureDisposition.accepted);
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_secondTap?.entry.resolve(GestureDisposition.accepted);
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_isStart = true;
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// TODO start details
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if (onHoldDragStart != null) onHoldDragStart!(DragStartDetails());
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}
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void _reject(_TapTracker tracker) {
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_checkCancel();
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_isStart = false;
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_trackers.remove(tracker.pointer);
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tracker.entry.resolve(GestureDisposition.rejected);
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_freezeTracker(tracker);
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_reset();
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}
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@override
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void dispose() {
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_reset();
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super.dispose();
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}
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void _reset() {
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_isStart = false;
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// debugPrint("reset");
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_stopFirstTapUpTimer();
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_stopSecondTapDownTimer();
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if (_firstTap != null) {
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if (_trackers.isNotEmpty) {
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_checkCancel();
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}
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// Note, order is important below in order for the resolve -> reject logic
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// to work properly.
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final _TapTracker tracker = _firstTap!;
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_firstTap = null;
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_reject(tracker);
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GestureBinding.instance!.gestureArena.release(tracker.pointer);
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if (_secondTap != null) {
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final _TapTracker tracker = _secondTap!;
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_secondTap = null;
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_reject(tracker);
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GestureBinding.instance!.gestureArena.release(tracker.pointer);
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}
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}
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_firstTap = null;
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_secondTap = null;
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_clearTrackers();
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}
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void _registerFirstTap(_TapTracker tracker) {
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_startFirstTapUpTimer();
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GestureBinding.instance!.gestureArena.hold(tracker.pointer);
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// Note, order is important below in order for the clear -> reject logic to
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// work properly.
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_freezeTracker(tracker);
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_trackers.remove(tracker.pointer);
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_firstTap = tracker;
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}
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void _registerSecondTap(_TapTracker tracker) {
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if (_firstTap != null) {
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_stopFirstTapUpTimer();
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_freezeTracker(_firstTap!);
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_firstTap = null;
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}
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_startSecondTapDownTimer();
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GestureBinding.instance!.gestureArena.hold(tracker.pointer);
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_secondTap = tracker;
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// TODO
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}
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void _clearTrackers() {
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_trackers.values.toList().forEach(_reject);
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assert(_trackers.isEmpty);
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}
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void _freezeTracker(_TapTracker tracker) {
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tracker.stopTrackingPointer(_handleEvent);
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}
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void _startFirstTapUpTimer() {
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_firstTapUpTimer ??= Timer(kDoubleTapTimeout, _reset);
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}
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void _startSecondTapDownTimer() {
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_secondTapDownTimer ??= Timer(kDoubleTapTimeout, _resolve);
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}
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void _stopFirstTapUpTimer() {
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if (_firstTapUpTimer != null) {
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_firstTapUpTimer!.cancel();
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_firstTapUpTimer = null;
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}
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}
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void _stopSecondTapDownTimer() {
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if (_secondTapDownTimer != null) {
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_secondTapDownTimer!.cancel();
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_secondTapDownTimer = null;
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}
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}
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void _checkCancel() {
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if (onHoldDragCancel != null) {
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invokeCallback<void>('onHoldDragCancel', onHoldDragCancel!);
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}
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}
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@override
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String get debugDescription => 'double tap';
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}
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class DoubleFinerTapGestureRecognizer extends GestureRecognizer {
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DoubleFinerTapGestureRecognizer({
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Object? debugOwner,
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Set<PointerDeviceKind>? supportedDevices,
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}) : super(
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debugOwner: debugOwner,
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supportedDevices: supportedDevices,
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);
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GestureTapDownCallback? onDoubleFinerTapDown;
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GestureTapDownCallback? onDoubleFinerTap;
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GestureTapCancelCallback? onDoubleFinerTapCancel;
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Timer? _firstTapTimer;
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_TapTracker? _firstTap;
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var _isStart = false;
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final Set<int> _upTap = {};
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final Map<int, _TapTracker> _trackers = <int, _TapTracker>{};
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@override
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bool isPointerAllowed(PointerDownEvent event) {
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if (_firstTap == null) {
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switch (event.buttons) {
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case kPrimaryButton:
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if (onDoubleFinerTapDown == null &&
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onDoubleFinerTap == null &&
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onDoubleFinerTapCancel == null) {
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return false;
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}
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break;
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default:
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return false;
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}
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}
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return super.isPointerAllowed(event);
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}
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@override
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void addAllowedPointer(PointerDownEvent event) {
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debugPrint("addAllowedPointer");
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if (_isStart) {
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// second
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if (onDoubleFinerTapDown != null) {
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final TapDownDetails details = TapDownDetails(
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globalPosition: event.position,
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localPosition: event.localPosition,
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kind: getKindForPointer(event.pointer),
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);
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invokeCallback<void>(
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'onDoubleFinerTapDown', () => onDoubleFinerTapDown!(details));
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}
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} else {
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// first tap
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_isStart = true;
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_startFirstTapDownTimer();
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}
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_trackTap(event);
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}
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void _trackTap(PointerDownEvent event) {
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final _TapTracker tracker = _TapTracker(
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event: event,
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entry: GestureBinding.instance!.gestureArena.add(event.pointer, this),
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doubleTapMinTime: kDoubleTapMinTime,
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gestureSettings: gestureSettings,
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);
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_trackers[event.pointer] = tracker;
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// debugPrint("_trackers:$_trackers");
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tracker.startTrackingPointer(_handleEvent, event.transform);
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_registerTap(tracker);
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}
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void _handleEvent(PointerEvent event) {
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final _TapTracker tracker = _trackers[event.pointer]!;
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if (event is PointerUpEvent) {
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debugPrint("PointerUpEvent");
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_upTap.add(tracker.pointer);
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} else if (event is PointerMoveEvent) {
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if (!tracker.isWithinGlobalTolerance(event, kDoubleTapTouchSlop))
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_reject(tracker);
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} else if (event is PointerCancelEvent) {
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_reject(tracker);
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}
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}
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@override
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void acceptGesture(int pointer) {}
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@override
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void rejectGesture(int pointer) {
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_TapTracker? tracker = _trackers[pointer];
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// If tracker isn't in the list, check if this is the first tap tracker
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if (tracker == null && _firstTap != null && _firstTap!.pointer == pointer) {
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tracker = _firstTap;
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}
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// If tracker is still null, we rejected ourselves already
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if (tracker != null) {
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_reject(tracker);
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}
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}
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void _reject(_TapTracker tracker) {
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_trackers.remove(tracker.pointer);
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tracker.entry.resolve(GestureDisposition.rejected);
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_freezeTracker(tracker);
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if (_firstTap != null) {
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if (tracker == _firstTap) {
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_reset();
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} else {
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_checkCancel();
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if (_trackers.isEmpty) {
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_reset();
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}
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}
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}
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}
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@override
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void dispose() {
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_reset();
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super.dispose();
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}
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void _reset() {
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_stopFirstTapUpTimer();
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_firstTap = null;
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_clearTrackers();
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}
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void _registerTap(_TapTracker tracker) {
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GestureBinding.instance!.gestureArena.hold(tracker.pointer);
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// Note, order is important below in order for the clear -> reject logic to
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// work properly.
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}
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void _clearTrackers() {
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_trackers.values.toList().forEach(_reject);
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assert(_trackers.isEmpty);
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}
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void _freezeTracker(_TapTracker tracker) {
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tracker.stopTrackingPointer(_handleEvent);
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}
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void _startFirstTapDownTimer() {
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_firstTapTimer ??= Timer(kDoubleTapTimeout, _timeoutCheck);
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}
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void _stopFirstTapUpTimer() {
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if (_firstTapTimer != null) {
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_firstTapTimer!.cancel();
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_firstTapTimer = null;
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}
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}
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void _timeoutCheck() {
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_isStart = false;
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if (_upTap.length == 2) {
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_resolve();
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} else {
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_reset();
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}
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_upTap.clear();
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}
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void _resolve() {
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// TODO tap down details
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if (onDoubleFinerTap != null) onDoubleFinerTap!(TapDownDetails());
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_trackers.forEach((key, value) {
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value.entry.resolve(GestureDisposition.accepted);
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});
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_reset();
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}
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void _checkCancel() {
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if (onDoubleFinerTapCancel != null) {
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invokeCallback<void>('onHoldDragCancel', onDoubleFinerTapCancel!);
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}
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}
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@override
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String get debugDescription => 'double tap';
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}
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/// TapTracker helps track individual tap sequences as part of a
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/// larger gesture.
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class _TapTracker {
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_TapTracker({
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required PointerDownEvent event,
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required this.entry,
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required Duration doubleTapMinTime,
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required this.gestureSettings,
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}) : assert(doubleTapMinTime != null),
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assert(event != null),
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assert(event.buttons != null),
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pointer = event.pointer,
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_initialGlobalPosition = event.position,
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initialButtons = event.buttons,
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_doubleTapMinTimeCountdown =
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_CountdownZoned(duration: doubleTapMinTime);
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final DeviceGestureSettings? gestureSettings;
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final int pointer;
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final GestureArenaEntry entry;
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final Offset _initialGlobalPosition;
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final int initialButtons;
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final _CountdownZoned _doubleTapMinTimeCountdown;
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bool _isTrackingPointer = false;
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void startTrackingPointer(PointerRoute route, Matrix4? transform) {
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if (!_isTrackingPointer) {
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_isTrackingPointer = true;
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GestureBinding.instance!.pointerRouter
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.addRoute(pointer, route, transform);
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}
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}
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void stopTrackingPointer(PointerRoute route) {
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if (_isTrackingPointer) {
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_isTrackingPointer = false;
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GestureBinding.instance!.pointerRouter.removeRoute(pointer, route);
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}
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}
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bool isWithinGlobalTolerance(PointerEvent event, double tolerance) {
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final Offset offset = event.position - _initialGlobalPosition;
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return offset.distance <= tolerance;
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}
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bool hasElapsedMinTime() {
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return _doubleTapMinTimeCountdown.timeout;
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}
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bool hasSameButton(PointerDownEvent event) {
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return event.buttons == initialButtons;
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}
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}
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/// CountdownZoned tracks whether the specified duration has elapsed since
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/// creation, honoring [Zone].
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class _CountdownZoned {
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_CountdownZoned({required Duration duration}) : assert(duration != null) {
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Timer(duration, _onTimeout);
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}
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bool _timeout = false;
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bool get timeout => _timeout;
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void _onTimeout() {
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_timeout = true;
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}
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}
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RawGestureDetector getMixinGestureDetector({
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Widget? child,
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GestureTapUpCallback? onTapUp,
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GestureTapDownCallback? onDoubleTapDown,
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GestureDoubleTapCallback? onDoubleTap,
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GestureLongPressDownCallback? onLongPressDown,
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GestureLongPressCallback? onLongPress,
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GestureDragStartCallback? onHoldDragStart,
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GestureDragUpdateCallback? onHoldDragUpdate,
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GestureDragCancelCallback? onHoldDragCancel,
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GestureDragEndCallback? onHoldDragEnd,
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GestureTapDownCallback? onDoubleFinerTap,
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GestureDragStartCallback? onOneFingerPanStart,
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GestureDragUpdateCallback? onOneFingerPanUpdate,
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GestureDragEndCallback? onOneFingerPanEnd,
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GestureScaleUpdateCallback? onTwoFingerScaleUpdate,
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GestureScaleEndCallback? onTwoFingerScaleEnd,
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GestureDragUpdateCallback? onTwoFingerHorizontalDragUpdate,
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GestureDragUpdateCallback? onTwoFingerVerticalDragUpdate,
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GestureDragStartCallback? onTwoFingerPanStart,
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GestureDragUpdateCallback? onTwoFingerPanUpdate,
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}) {
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return RawGestureDetector(
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child: child,
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gestures: <Type, GestureRecognizerFactory>{
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// Official
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TapGestureRecognizer:
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GestureRecognizerFactoryWithHandlers<TapGestureRecognizer>(
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() => TapGestureRecognizer(), (instance) {
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instance.onTapUp = onTapUp;
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}),
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DoubleTapGestureRecognizer:
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GestureRecognizerFactoryWithHandlers<DoubleTapGestureRecognizer>(
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() => DoubleTapGestureRecognizer(), (instance) {
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instance
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..onDoubleTapDown = onDoubleTapDown
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..onDoubleTap = onDoubleTap;
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}),
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LongPressGestureRecognizer:
|
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GestureRecognizerFactoryWithHandlers<LongPressGestureRecognizer>(
|
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() => LongPressGestureRecognizer(), (instance) {
|
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instance
|
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..onLongPressDown = onLongPressDown
|
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..onLongPress = onLongPress;
|
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}),
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// Customized
|
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HoldTapMoveGestureRecognizer:
|
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GestureRecognizerFactoryWithHandlers<HoldTapMoveGestureRecognizer>(
|
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() => HoldTapMoveGestureRecognizer(),
|
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(instance) => {
|
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instance
|
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..onHoldDragStart = onHoldDragStart
|
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..onHoldDragUpdate = onHoldDragUpdate
|
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..onHoldDragCancel = onHoldDragCancel
|
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..onHoldDragEnd = onHoldDragEnd
|
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}),
|
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DoubleFinerTapGestureRecognizer: GestureRecognizerFactoryWithHandlers<
|
|
DoubleFinerTapGestureRecognizer>(
|
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() => DoubleFinerTapGestureRecognizer(), (instance) {
|
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instance.onDoubleFinerTap = onDoubleFinerTap;
|
|
}),
|
|
CustomTouchGestureRecognizer:
|
|
GestureRecognizerFactoryWithHandlers<CustomTouchGestureRecognizer>(
|
|
() => CustomTouchGestureRecognizer(), (instance) {
|
|
instance
|
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..onOneFingerPanStart = onOneFingerPanStart
|
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..onOneFingerPanUpdate = onOneFingerPanUpdate
|
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..onOneFingerPanEnd = onOneFingerPanEnd
|
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..onTwoFingerScaleUpdate = onTwoFingerScaleUpdate
|
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..onTwoFingerScaleEnd = onTwoFingerScaleEnd
|
|
..onTwoFingerHorizontalDragUpdate = onTwoFingerHorizontalDragUpdate
|
|
..onTwoFingerVerticalDragUpdate = onTwoFingerVerticalDragUpdate;
|
|
})
|
|
});
|
|
}
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