Add displayMarginBeginning/End to ListView and GridView.

This allows displaying content outside the visible area of
the view.

[ChangeLog][QtQuick] Add displayMarginBeginning/End to
ListView and GridView.

Change-Id: Idf9b5a0cd34a781c9603a9ad98ea189754972ba1
Reviewed-by: Alan Alpert (Personal) <416365416c@gmail.com>

3 files changed, 95 insertions, 0 deletions

diff --git a/examples/quick/views/listview/displaymargin.qml b/examples/quick/views/listview/displaymargin.qml
new file mode 100644
index 0000000000..c3402f6baa
--- /dev/null
+++ b/examples/quick/views/listview/displaymargin.qml
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples 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 Digia Plc and its Subsidiary(-ies) 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 2.3
+
+Item {
+    width: 480; height: 320
+
+    ListView {
+        id: view
+        anchors.top: header.bottom
+        anchors.bottom: footer.top
+        width: parent.width
+
+        cacheBuffer: 0
+        displayMarginBeginning: 40
+        displayMarginEnd: 40
+
+        model: 100
+        delegate: Rectangle {
+            objectName: "delegate"
+            width: parent.width
+            height: 25
+            color: index % 2 ? "steelblue" : "lightsteelblue"
+            Text {
+                anchors.centerIn: parent
+                color: "white"
+                text: "Item " + (index + 1)
+            }
+        }
+    }
+
+    Rectangle {
+        id: header
+        width: parent.width; height: 40
+        color: "#AAFF0000"
+
+        Text {
+            anchors.centerIn: parent
+            font.pixelSize: 24
+            text: "Header"
+        }
+    }
+
+    Rectangle {
+        id: footer
+        anchors.bottom: parent.bottom
+        width: parent.width; height: 40
+        color: "#AAFF0000"
+
+        Text {
+            anchors.centerIn: parent
+            font.pixelSize: 24
+            text: "Footer"
+        }
+    }
+}
diff --git a/examples/quick/views/views.qml b/examples/quick/views/views.qml
index 1bc6f6a3d8..2fbf9c5470 100644
--- a/examples/quick/views/views.qml
+++ b/examples/quick/views/views.qml
@@ -58,6 +58,7 @@ Item {
             addExample("Packages", "Transitions between a ListView and GridView", Qt.resolvedUrl("package/view.qml"))
             addExample("PathView", "A simple PathView", Qt.resolvedUrl("pathview/pathview-example.qml"))
             addExample("ObjectModel", "Using a ObjectModel", Qt.resolvedUrl("objectmodel/objectmodel.qml"))
+            addExample("Display Margins", "A ListView with display margins", Qt.resolvedUrl("listview/displaymargin.qml"))
         }
     }
 }
diff --git a/examples/quick/views/views.qrc b/examples/quick/views/views.qrc
index 434fa788bf..52abb68659 100644
--- a/examples/quick/views/views.qrc
+++ b/examples/quick/views/views.qrc
@@ -65,5 +65,6 @@
         <file>visualdatamodel/dragselection.qml</file>
         <file>objectmodel/objectmodel.qml</file>
         <file>views.qml</file>
+        <file>listview/displaymargin.qml</file>
     </qresource>
 </RCC>