Doc: add snippets and screenshots for the Universal attached properties

Ideas and descriptions shamelessly stolen from f26f855, which did the
same for the Material style.

Change-Id: Ibab47d1370c56de4104dc2bf549870335c639257
Task-number: QTBUG-55904
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/imports/controls/doc/snippets/qtquickcontrols2-universal-background.qml b/src/imports/controls/doc/snippets/qtquickcontrols2-universal-background.qml
new file mode 100644
index 00000000..32a1b43b
--- /dev/null
+++ b/src/imports/controls/doc/snippets/qtquickcontrols2-universal-background.qml
@@ -0,0 +1,44 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Controls 2.0
+import QtQuick.Controls.Universal 2.0
+
+Pane {
+    padding: 10
+
+//! [1]
+Pane {
+    Universal.background: Universal.Steel
+
+    Button {
+        text: qsTr("Button")
+    }
+}
+//! [1]
+}