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This commit is contained in:
Nick Fisher
2023-06-22 13:47:24 +08:00
parent ca1ae97340 bbb3cb5727
commit 4adf8bbf80
25 changed files with 941 additions and 681 deletions
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211
lib/filament_gesture_detector.dart
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@@ -36,7 +36,6 @@ class _FilamentGestureDetectorState extends State<FilamentGestureDetector> {
};
bool _rotating = false;
bool _scaling = false;
// to avoid duplicating code for pan/rotate (panStart, panUpdate, panEnd, rotateStart, rotateUpdate etc)
// we have only a single function for start/update/end.
@@ -45,8 +44,6 @@ class _FilamentGestureDetectorState extends State<FilamentGestureDetector> {
late Function(double x, double y) _functionUpdate;
late Function() _functionEnd;
double _lastScale = 0;
@override
void initState() {
_setFunction();
@@ -85,101 +82,135 @@ class _FilamentGestureDetectorState extends State<FilamentGestureDetector> {
Timer? _scrollTimer;
Widget _desktop() {
return Listener(
onPointerSignal: !widget.enableControls
? null
: (pointerSignal) async {
// scroll-wheel zoom on desktop
if (pointerSignal is PointerScrollEvent) {
_scrollTimer?.cancel();
widget.controller.zoomBegin();
widget.controller
.zoomUpdate(pointerSignal.scrollDelta.dy > 0 ? 10 : -10);
_scrollTimer = Timer(Duration(milliseconds: 100), () {
widget.controller.zoomEnd();
_scrollTimer = null;
});
}
},
onPointerPanZoomStart: !widget.enableControls
? null
: (pzs) {
print("PAN ZOOM START");
},
onPointerDown: !widget.enableControls
? null
: (d) async {
print("a");
// if (d.buttons == kTertiaryButton || _rotating) {
// widget.controller
// .rotateStart(d.localPosition.dx, d.localPosition.dy);
// } else {
// widget.controller.panStart(d.focalPoint.dx, d.focalPoint.dy);
// }
},
onPointerMove: !widget.enableControls
? null
: (PointerMoveEvent d) async {
// if (d.buttons == kTertiaryButton || _rotating) {
// widget.controller
// .rotateUpdate(d.localPosition.dx, d.localPosition.dy);
// } else {
// widget.controller.panUpdate(d.focalPoint.dx, d.focalPoint.dy);
// }
},
onPointerUp: !widget.enableControls
? null
: (d) async {
// if (d.buttons == kTertiaryButton || _rotating) {
// widget.controller.rotateEnd();
// } else {
// widget.controller.panEnd(d.focalPoint.dx, d.focalPoint.dy);
// }
},
child: widget.child);
}
bool _scaling = false;
double _lastScale = 0;
DateTime _lastUpdate = DateTime.now();
Widget _mobile() {
return GestureDetector(
behavior: HitTestBehavior.opaque,
onDoubleTap: () {
_rotating = !_rotating;
print("Set rotating to $_rotating");
},
onScaleStart: !widget.enableControls
? null
: (d) async {
if (d.pointerCount == 2) {
_lastScale = 0;
_scaling = true;
widget.controller.zoomBegin();
} else if (!_scaling) {
if (_rotating) {
widget.controller
.rotateStart(d.focalPoint.dx, d.focalPoint.dy);
} else {
widget.controller
.panStart(d.focalPoint.dx, d.focalPoint.dy);
}
}
},
onScaleEnd: !widget.enableControls
? null
: (d) async {
if (d.pointerCount == 2) {
widget.controller.zoomEnd();
_lastScale = 0;
_scaling = false;
} else if (!_scaling) {
if (_rotating) {
widget.controller.rotateEnd();
} else {
widget.controller.panEnd();
}
}
},
onScaleUpdate: !widget.enableControls
? null
: (ScaleUpdateDetails d) async {
if (d.pointerCount == 2) {
// var scale = d.horizontalScale - _lastScale;
// print(scale);
widget.controller
.zoomUpdate(d.horizontalScale > 1 ? 0.1 : -0.1);
_lastScale = d.horizontalScale;
} else if (!_scaling) {
if (_rotating) {
widget.controller
.rotateUpdate(d.focalPoint.dx, d.focalPoint.dy);
} else {
widget.controller
.panUpdate(d.focalPoint.dx, d.focalPoint.dy);
}
}
},
child: widget.child);
}
@override
Widget build(BuildContext context) {
print(widget.enableControls);
return Stack(children: [
Positioned.fill(
// pinch zoom on mobile
// couldn't find any equivalent for pointerCount in Listener so we use two widgets:
// - outer is a GestureDetector only for pinch zoom
// - inner is a Listener for all other gestures (including scroll zoom on desktop)
child: GestureDetector(
onDoubleTap: () {
_rotating = !_rotating;
print("Set rotating to $_rotating");
},
onScaleStart: !widget.enableControls
? null
: (d) async {
_scaling = true;
if (d.pointerCount == 2) {
widget.controller.zoomEnd();
widget.controller.zoomBegin();
}
},
onScaleEnd: !widget.enableControls
? null
: (d) async {
_scaling = false;
if (d.pointerCount == 2) {
_lastScale = 0;
widget.controller.zoomEnd();
}
},
onScaleUpdate: !widget.enableControls
? null
: (d) async {
if (d.pointerCount == 2) {
if (_lastScale != 0) {
widget.controller.zoomUpdate(Platform.isIOS
? 1000 * (_lastScale - d.scale)
: 100 * (_lastScale - d.scale));
}
}
_lastScale = d.scale;
},
child: Listener(
onPointerSignal: !widget.enableControls
? null
: (pointerSignal) async {
// scroll-wheel zoom on desktop
if (pointerSignal is PointerScrollEvent) {
_scrollTimer?.cancel();
widget.controller.zoomBegin();
widget.controller.zoomUpdate(
pointerSignal.scrollDelta.dy > 0 ? 10 : -10);
_scrollTimer =
Timer(Duration(milliseconds: 100), () {
widget.controller.zoomEnd();
_scrollTimer = null;
});
}
},
onPointerPanZoomStart:
!widget.enableControls ? null : (pzs) {},
onPointerDown: !widget.enableControls
? null
: (d) async {
if (d.buttons == kTertiaryButton || _rotating) {
widget.controller.rotateStart(
d.localPosition.dx, d.localPosition.dy);
} else {
_functionStart(
d.localPosition.dx, d.localPosition.dy);
}
},
onPointerMove: !widget.enableControls
? null
: (d) async {
if (d.buttons == kTertiaryButton || _rotating) {
widget.controller.rotateUpdate(
d.localPosition.dx, d.localPosition.dy);
} else {
_functionUpdate(
d.localPosition.dx, d.localPosition.dy);
}
},
onPointerUp: !widget.enableControls
? null
: (d) async {
if (d.buttons == kTertiaryButton || _rotating) {
widget.controller.rotateEnd();
} else {
_functionEnd();
}
},
child: widget.child))),
child:
Platform.isLinux || Platform.isWindows ? _desktop() : _mobile()),
widget.showControlOverlay
? Align(
alignment: Alignment.bottomRight,