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, 63 insertions, 0 deletions

diff --git a/tests/auto/quick/qquickmousearea/data/mask.qml b/tests/auto/quick/qquickmousearea/data/mask.qml
new file mode 100644
index 0000000000..23e93f0310
--- /dev/null
+++ b/tests/auto/quick/qquickmousearea/data/mask.qml
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Ford Motor Company
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.11
+import Test 1.0
+
+Item {
+    id: root
+    property int clicked: 0
+    property int pressed: 0
+    property int released: 0
+
+    width: 200; height: 200
+
+    MouseArea {
+        id: mouseArea
+        width: 200; height: 200
+        onPressed: { root.pressed++ }
+        onClicked: { root.clicked++ }
+        onReleased: { root.released++ }
+
+        containsMask: CircleMask {
+            radius: mouseArea.width/2
+        }
+    }
+}
+