Support masking of QQuickItems

Adding a new property, containsMask, to QQuickItem, that can be set
to any QObject defining a
Q_INVOKABLE bool contains(const QPointF &point).
When this property is set, the mask object contains method is used in
place of the item own contains method.

[ChangeLog][QtQuick][QQuickItem] Added containsMask property.

Task-number: QTBUG-20524
Change-Id: I5b0696e2cddc6ae3e217ce149c5f44980fdb69aa
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/quick/items/qquickmousearea_p_p.h b/src/quick/items/qquickmousearea_p_p.h
index 34cda9e193..0dd2690d43 100644
--- a/src/quick/items/qquickmousearea_p_p.h
+++ b/src/quick/items/qquickmousearea_p_p.h
@@ -61,6 +61,7 @@ QT_BEGIN_NAMESPACE
 
 class QQuickMouseEvent;
 class QQuickMouseArea;
+class QQuickPointerMask;
 class QQuickMouseAreaPrivate : public QQuickItemPrivate
 {
     Q_DECLARE_PUBLIC(QQuickMouseArea)
@@ -99,6 +100,7 @@ public:
 #if QT_CONFIG(draganddrop)
     QQuickDrag *drag;
 #endif
+    QPointer<QQuickPointerMask> mask;
     QPointF startScene;
     QPointF targetStartPos;
     QPointF lastPos;