Qt 4.8: PressAndHoldButton.qml Example File (declarative/modelviews/listview/sections/qml/sections/content/PressAndHoldButton.qml)

Qt Reference Documentation

# PressAndHoldButton.qml Example File

declarative/modelviews/listview/sections/qml/sections/content/PressAndHoldButton.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."
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     import QtQuick 1.0

     Image {
         id: container

         property int repeatDelay: 300
         property int repeatDuration: 75
         property bool pressed: false

         signal clicked

         scale: pressed ? 0.9 : 1

         function release() {
             autoRepeatClicks.stop()
             container.pressed = false
         }

         SequentialAnimation on pressed {
             id: autoRepeatClicks
             running: false

             PropertyAction { target: container; property: "pressed"; value: true }
             ScriptAction { script: container.clicked() }
             PauseAnimation { duration: repeatDelay }

             SequentialAnimation {
                 loops: Animation.Infinite
                 ScriptAction { script: container.clicked() }
                 PauseAnimation { duration: repeatDuration }
             }
         }

         MouseArea {
             anchors.fill: parent

             onPressed: autoRepeatClicks.start()
             onReleased: container.release()
             onCanceled: container.release()
         }
     }