Qt 4.7: mousearea-example.qml Example File (declarative/touchinteraction/mousearea/mousearea-example.qml)

Qt Reference Documentation

# mousearea-example.qml Example File

declarative/touchinteraction/mousearea/mousearea-example.qml

     /****************************************************************************
     **
     ** Copyright (C) 2011 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

     Rectangle {
         id: box
         width: 350; height: 250

         Rectangle {
             id: redSquare
             width: 80; height: 80
             anchors.top: parent.top; anchors.left: parent.left; anchors.margins: 10
             color: "red"

             Text { text: "Click"; font.pixelSize: 16; anchors.centerIn: parent }

             MouseArea {
                 anchors.fill: parent
                 hoverEnabled: true
                 acceptedButtons: Qt.LeftButton | Qt.RightButton

                 onEntered: info.text = 'Entered'
                 onExited: info.text = 'Exited (pressed=' + pressed + ')'

                 onPressed: {
                     info.text = 'Pressed (button=' + (mouse.button == Qt.RightButton ? 'right' : 'left')
                         + ' shift=' + (mouse.modifiers & Qt.ShiftModifier ? 'true' : 'false') + ')'
                     var posInBox = redSquare.mapToItem(box, mouse.x, mouse.y)
                     posInfo.text = + mouse.x + ',' + mouse.y + ' in square'
                             + ' (' + posInBox.x + ',' + posInBox.y + ' in window)'
                 }

                 onReleased: {
                     info.text = 'Released (isClick=' + mouse.isClick + ' wasHeld=' + mouse.wasHeld + ')'
                     posInfo.text = ''
                 }

                 onPressAndHold: info.text = 'Press and hold'
                 onClicked: info.text = 'Clicked (wasHeld=' + mouse.wasHeld + ')'
                 onDoubleClicked: info.text = 'Double clicked'
             }
         }

         Rectangle {
             id: blueSquare
             width: 80; height: 80
             x: box.width - width - 10; y: 10    // making this item draggable, so don't use anchors
             color: "blue"

             Text { text: "Drag"; font.pixelSize: 16; color: "white"; anchors.centerIn: parent }

             MouseArea {
                 anchors.fill: parent
                 drag.target: blueSquare
                 drag.axis: Drag.XandYAxis
                 drag.minimumX: 0
                 drag.maximumX: box.width - parent.width
                 drag.minimumY: 0
                 drag.maximumY: box.height - parent.width
             }
         }

         Text {
             id: info
             anchors.bottom: posInfo.top; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 30

             onTextChanged: console.log(text)
         }

         Text {
             id: posInfo
             anchors.bottom: parent.bottom; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 30
         }
     }