ListView: allow flicking to both directions

Previously flicking was restricted to the orientation of the ListView.

[ChangeLog][QtQuick][ListView] Made it possible to enable horizontal
flicking in a vertical ListView, and vice versa. The only thing apps
must do is to specify the desired flick direction and the content
width (vertical ListView) or content height (horizontal ListView),
which is not calculated by ListView.

Change-Id: Ic370e57f5d18679940d48e7a2c20c200b2ef36d1
Task-number: QTBUG-52553
Task-number: QTBUG-56501
Reviewed-by: Robin Burchell <robin.burchell@crimson.no>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 70 insertions, 0 deletions

diff --git a/tests/auto/quick/qquicklistview/data/flickBothDirections.qml b/tests/auto/quick/qquicklistview/data/flickBothDirections.qml
new file mode 100644
index 0000000000..5d80ce4110
--- /dev/null
+++ b/tests/auto/quick/qquicklistview/data/flickBothDirections.qml
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+import QtQuick 2.9
+
+Rectangle {
+    width: 200
+    height: 200
+    ListView {
+        id: list
+        objectName: "list"
+        width: 100
+        height: 100
+        model: 20
+        anchors.centerIn: parent
+        orientation: initialOrientation
+        contentWidth: initialContentWidth
+        contentHeight: initialContentHeight
+        flickableDirection: initialFlickableDirection
+        delegate: Rectangle {
+            width: list.orientation == ListView.Vertical ? 120 : 10
+            height: list.orientation == ListView.Vertical ? 20 : 110
+            color: Qt.rgba(0, 0, index / 19, 1)
+            opacity: 0.8
+        }
+        Rectangle {
+            z: -1
+            width: 100
+            height: 100
+            border.width: 1
+            border.color: "red"
+        }
+    }
+}