QmlDesigner: Fix issues with MouseArea3D deactivation detection

Existing mouse grab is now released when MouseArea3D is deactivated
or set to no longer grab the mouse. Various gizmos were also set
to follow MouseArea3D's dragging property instead of keeping track
of drag themselves.

Change-Id: I49f968f20b26eb222fc8635b943e9144073fb164
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

share/qtcreator/qml/qmlpuppet/mockfiles/DirectionalDraggable.qml

@@ -34,7 +34,7 @@ Model {
     property View3D view3D
     property alias color: material.emissiveColor
     property Node targetNode: null
-    property bool dragging: false
+    property bool dragging: mouseAreaYZ.dragging || mouseAreaXZ.dragging
     property bool active: false
 
     readonly property bool hovering: mouseAreaYZ.hovering || mouseAreaXZ.hovering
@@ -61,7 +61,6 @@ Model {
         _pointerPosPressed = mouseArea.mapPositionToScene(maskedPosition);
         var sp = targetNode.scenePosition;
         _targetStartPos = Qt.vector3d(sp.x, sp.y, sp.z);
-        dragging = true;
         pressed(mouseArea);
     }
 
@@ -88,7 +87,6 @@ Model {
             return;
 
         released(mouseArea, calcRelativeDistance(mouseArea, scenePos));
-        dragging = false;
     }
 
     MouseArea3D {

share/qtcreator/qml/qmlpuppet/mockfiles/PlanarDraggable.qml

@@ -34,7 +34,7 @@ Model {
     property alias color: gizmoMaterial.emissiveColor
     property alias priority: mouseArea.priority
     property Node targetNode: null
-    property bool dragging: false
+    property bool dragging: mouseArea.dragging
     property bool active: false
 
     readonly property bool hovering: mouseArea.hovering
@@ -65,7 +65,6 @@ Model {
         _pointerPosPressed = mouseArea.mapPositionToScene(scenePos);
         var sp = targetNode.scenePosition;
         _targetStartPos = Qt.vector3d(sp.x, sp.y, sp.z);
-        dragging = true;
         pressed(mouseArea);
     }
 
@@ -91,7 +90,6 @@ Model {
             return;
 
         released(mouseArea, calcRelativeDistance(mouseArea, scenePos));
-        dragging = false;
     }
 
     MouseArea3D {

share/qtcreator/qml/qmlpuppet/mockfiles/RotateRing.qml

@@ -33,7 +33,7 @@ Model {
     property View3D view3D
     property alias color: material.emissiveColor
     property Node targetNode: null
-    property bool dragging: false
+    property bool dragging: mouseAreaMain.dragging
     property bool active: false
     property alias hovering: mouseAreaMain.hovering
     property alias priority: mouseAreaMain.priority
@@ -80,7 +80,6 @@ Model {
         _targetPosOnScreen = view3D.mapFrom3DScene(targetNode.scenePosition);
         _targetPosOnScreen.z = 0;
         _pointerPosPressed = Qt.vector3d(screenPos.x, screenPos.y, 0);
-        dragging = true;
         _trackBall = angle < 0.1;
 
         // Recreate vector so we don't follow the changes in targetNode.rotation
@@ -108,7 +107,6 @@ Model {
 
         applyLocalRotation(screenPos);
         rotateCommit();
-        dragging = false;
         currentAngle = 0;
         currentMousePos = screenPos;
     }

share/qtcreator/qml/qmlpuppet/qml2puppet/editor3d/mousearea3d.cpp

@@ -123,6 +123,13 @@ void MouseArea3D::setGrabsMouse(bool grabsMouse)
         return;
 
     m_grabsMouse = grabsMouse;
+
+    if (!m_grabsMouse && s_mouseGrab == this) {
+        setDragging(false);
+        setHovering(false);
+        s_mouseGrab = nullptr;
+    }
+
     emit grabsMouseChanged();
 }
 
@@ -132,6 +139,13 @@ void MouseArea3D::setActive(bool active)
         return;
 
     m_active = active;
+
+    if (!m_active && s_mouseGrab == this) {
+        setDragging(false);
+        setHovering(false);
+        s_mouseGrab = nullptr;
+    }
+
     emit activeChanged();
 }