- Qt 5.5
- Qt Quick
- Qt Quick Demo - Tweet Search
- ListHeader.qml Example File
- Qt 5.5.1 Reference Documentation

# ListHeader.qml Example File

demos/tweetsearch/content/ListHeader.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** 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 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 2.0

    Item {
        height: 60
        width: parent.width

        property bool refresh: state == "pulled" ? true : false

        Row {
            spacing: 6
            height: childrenRect.height
            anchors.centerIn: parent

            Image {
                id: arrow
                source: "resources/icon-refresh.png"
                transformOrigin: Item.Center
                Behavior on rotation { NumberAnimation { duration: 200 } }
            }

            Text {
                id: label
                anchors.verticalCenter: arrow.verticalCenter
                text: "Pull to refresh...    "
                font.pixelSize: 18
                color: "#999999"
            }
        }

        states: [
            State {
                name: "base"; when: mainListView.contentY >= -120
                PropertyChanges { target: arrow; rotation: 180 }
            },
            State {
                name: "pulled"; when: mainListView.contentY < -120
                PropertyChanges { target: label; text: "Release to refresh..." }
                PropertyChanges { target: arrow; rotation: 0 }
            }
        ]
    }