pass through scaleStart/Update/End to mobile gesture detector

lib/filament_controller_ffi.dart

@@ -146,12 +146,13 @@ class FilamentControllerFFI extends FilamentController {
 
   @override
   Future setDimensions(Rect rect, double pixelRatio) async {
+    _pixelRatio = pixelRatio;
     this._rect.value = Rect.fromLTWH(
         (rect.left * _pixelRatio).floor().toDouble(),
         rect.top * _pixelRatio.floor().toDouble(),
         (rect.width * _pixelRatio).ceil().toDouble(),
         (rect.height * _pixelRatio).ceil().toDouble());
-    _pixelRatio = pixelRatio;
+    print("Using dimensions ${_rect.value} (pixel ratio : $_pixelRatio)");
     if (!_rectCompleter.isCompleted) {
       _rectCompleter.complete(this._rect.value);
     }
@@ -1404,7 +1405,7 @@ class FilamentControllerFFI extends FilamentController {
         textureDetails.value!.height - (y * _pixelRatio).toInt(), outPtr);
     int wait = 0;
     while (outPtr.value == 0) {
-      await Future.delayed(const Duration(milliseconds: 32));
+      await Future.delayed(const Duration(milliseconds: 16));
       wait++;
       if (wait > 10) {
         allocator.free(outPtr);

lib/widgets/filament_gesture_detector.dart

@@ -41,13 +41,20 @@ class FilamentGestureDetector extends StatelessWidget {
   ///
   final bool enablePicking;
 
+  final void Function(ScaleStartDetails)? onScaleStart;
+  final void Function(ScaleUpdateDetails)? onScaleUpdate;
+  final void Function(ScaleEndDetails)? onScaleEnd;
+
   const FilamentGestureDetector(
       {Key? key,
       required this.controller,
       this.child,
       this.showControlOverlay = false,
       this.enableCamera = true,
-      this.enablePicking = true})
+      this.enablePicking = true,
+      this.onScaleStart,
+      this.onScaleUpdate,
+      this.onScaleEnd})
       : super(key: key);
 
   @override
@@ -64,12 +71,14 @@ class FilamentGestureDetector extends StatelessWidget {
       );
     } else {
       return FilamentGestureDetectorMobile(
-        controller: controller,
-        child: child,
-        showControlOverlay: showControlOverlay,
-        enableCamera: enableCamera,
-        enablePicking: enablePicking,
-      );
+          controller: controller,
+          child: child,
+          showControlOverlay: showControlOverlay,
+          enableCamera: enableCamera,
+          enablePicking: enablePicking,
+          onScaleStart: onScaleStart,
+          onScaleUpdate: onScaleUpdate,
+          onScaleEnd: onScaleEnd);
     }
   }
 }

lib/widgets/filament_gesture_detector_mobile.dart

@@ -39,6 +39,10 @@ class FilamentGestureDetectorMobile extends StatefulWidget {
 
   final double zoomDelta;
 
+  final void Function(ScaleStartDetails)? onScaleStart;
+  final void Function(ScaleUpdateDetails)? onScaleUpdate;
+  final void Function(ScaleEndDetails)? onScaleEnd;
+
   const FilamentGestureDetectorMobile(
       {Key? key,
       required this.controller,
@@ -46,6 +50,9 @@ class FilamentGestureDetectorMobile extends StatefulWidget {
       this.showControlOverlay = false,
       this.enableCamera = true,
       this.enablePicking = true,
+      this.onScaleStart,
+      this.onScaleUpdate,
+      this.onScaleEnd,
       this.zoomDelta = 1})
       : super(key: key);
 
@@ -132,11 +139,12 @@ class _FilamentGestureDetectorMobileState
           child: GestureDetector(
               behavior: HitTestBehavior.translucent,
               onTapDown: (d) {
-                if (widget.enablePicking) {
-                  print("PICK");
-                  widget.controller.pick(
-                      d.globalPosition.dx.toInt(), d.globalPosition.dy.toInt());
+                if (!widget.enablePicking) {
+                  return;
                 }
+
+                widget.controller.pick(
+                    d.globalPosition.dx.toInt(), d.globalPosition.dy.toInt());
               },
               onDoubleTap: () {
                 setState(() {
@@ -144,6 +152,10 @@ class _FilamentGestureDetectorMobileState
                 });
               },
               onScaleStart: (d) async {
+                if (widget.onScaleStart != null) {
+                  widget.onScaleStart!.call(d);
+                  return;
+                }
                 if (d.pointerCount == 2 && widget.enableCamera) {
                   _scaling = true;
                   await widget.controller.zoomBegin();
@@ -158,6 +170,10 @@ class _FilamentGestureDetectorMobileState
                 }
               },
               onScaleUpdate: (ScaleUpdateDetails d) async {
+                if (widget.onScaleUpdate != null) {
+                  widget.onScaleUpdate!.call(d);
+                  return;
+                }
                 if (d.pointerCount == 2 && widget.enableCamera) {
                   if (d.horizontalScale != _lastScale) {
                     widget.controller.zoomUpdate(
@@ -177,6 +193,11 @@ class _FilamentGestureDetectorMobileState
                 }
               },
               onScaleEnd: (d) async {
+                if (widget.onScaleEnd != null) {
+                  widget.onScaleEnd!.call(d);
+                  return;
+                }
+
                 if (d.pointerCount == 2 && widget.enableCamera) {
                   widget.controller.zoomEnd();
                 } else if (!_scaling && widget.enableCamera) {