Qt Reference Documentation

highlight.qml Example File

declarative/modelviews/listview/expandingdelegates/qml/expandingdelegates/highlight.qml
 /****************************************************************************
 **
 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** 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 Nokia Corporation 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."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 // This example shows how to create your own highlight delegate for a ListView
 // that uses a SpringAnimation to provide custom movement when the
 // highlight bar is moved between items.

 import QtQuick 1.0
 import "content"

 Rectangle {
     width: 200; height: 300

     // Define a delegate component.  A component will be
     // instantiated for each visible item in the list.
     Component {
         id: petDelegate
         Item {
             id: wrapper
             width: 200; height: 55
             Column {
                 Text { text: 'Name: ' + name }
                 Text { text: 'Type: ' + type }
                 Text { text: 'Age: ' + age }
             }
             // indent the item if it is the current item
             states: State {
                 name: "Current"
                 when: wrapper.ListView.isCurrentItem
                 PropertyChanges { target: wrapper; x: 20 }
             }
             transitions: Transition {
                 NumberAnimation { properties: "x"; duration: 200 }
             }
         }
     }

     // Define a highlight with customised movement between items.
     Component {
         id: highlightBar
         Rectangle {
             width: 200; height: 50
             color: "#FFFF88"
             y: listView.currentItem.y;
             Behavior on y { SpringAnimation { spring: 2; damping: 0.1 } }
         }
     }

     ListView {
         id: listView
         width: 200; height: parent.height

         model: PetsModel {}
         delegate: petDelegate
         focus: true

         // Set the highlight delegate. Note we must also set highlightFollowsCurrentItem
         // to false so the highlight delegate can control how the highlight is moved.
         highlight: highlightBar
         highlightFollowsCurrentItem: false
     }
 }