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fix desktop scroll/pan/zoom

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This commit is contained in:
Nick Fisher
2022-12-09 14:43:15 +08:00
parent 964fdab8bc
commit 361b1aa8f2
1 changed files with 57 additions and 23 deletions
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80
lib/filament_gesture_detector.dart
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@@ -1,3 +1,6 @@
import 'dart:async';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'filament_controller.dart';
import 'filament_widget.dart';
@@ -74,39 +77,70 @@ class _FilamentGestureDetectorState extends State<FilamentGestureDetector> {
super.didUpdateWidget(oldWidget);
}
Timer? _scrollTimer;
@override
Widget build(BuildContext context) {
return Stack(children: [
Positioned.fill(
child: GestureDetector(
behavior: HitTestBehavior.opaque,
onScaleStart: (d) async {
if (d.pointerCount == 2) {
await widget.controller.zoomEnd();
child: Listener(
onPointerSignal: (pointerSignal) async {
if (pointerSignal is PointerScrollEvent) {
_scrollTimer?.cancel();
await widget.controller.zoomBegin();
await widget.controller.zoomUpdate(
pointerSignal.scrollDelta.dy > 0 ? 100 : -100);
_scrollTimer = Timer(Duration(milliseconds: 100), () {
widget.controller.zoomEnd();
_scrollTimer = null;
});
} else {
await _functionStart(d.focalPoint.dx, d.focalPoint.dy);
print(pointerSignal);
}
},
onScaleEnd: (d) async {
if (d.pointerCount == 2) {
_lastScale = 0;
await widget.controller.zoomEnd();
} else {
await _functionEnd();
}
onPointerPanZoomStart: (pzs) {
print(pzs);
},
onScaleUpdate: (d) async {
if (d.pointerCount == 2) {
if (_lastScale != 0) {
await widget.controller
.zoomUpdate(100 * (_lastScale - d.scale));
}
} else {
await _functionUpdate(d.focalPoint.dx, d.focalPoint.dy);
}
_lastScale = d.scale;
onPointerDown: (d) async {
await _functionStart(d.localPosition.dx, d.localPosition.dy);
},
onPointerMove: (d) async {
await _functionUpdate(d.localPosition.dx, d.localPosition.dy);
},
onPointerUp: (d) async {
await _functionEnd();
},
// on
// onScaleStart: (d) async {
// print("SCALE START");
// if (d.pointerCount == 2) {
// await widget.controller.zoomEnd();
// await widget.controller.zoomBegin();
// } else {
// await _functionStart(d.focalPoint.dx, d.focalPoint.dy);
// }
// },
// onScaleEnd: (d) async {
// print("SCALE END");
// if (d.pointerCount == 2) {
// _lastScale = 0;
// await widget.controller.zoomEnd();
// } else {
// await _functionEnd();
// }
// },
// onScaleUpdate: (d) async {
// if (d.pointerCount == 2) {
// if (_lastScale != 0) {
// await widget.controller
// .zoomUpdate(100 * (_lastScale - d.scale));
// }
// } else {
// await _functionUpdate(d.focalPoint.dx, d.focalPoint.dy);
// }
// _lastScale = d.scale;
// },
child: widget.child)),
widget.showControls
? Align(