mousearea.qml Example File | Qt Quick 5.9

Qt 5.9 | Qt Quick | Qt Quick Examples - MouseArea | mousearea.qml Example File

Qt 5.9.4 Reference Documentation

# mousearea.qml Example File

mousearea/mousearea.qml

      /****************************************************************************
      **
      ** Copyright (C) 2017 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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 https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, 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 2.4

      Rectangle {
          id: box
          width: 320; height: 480

          Rectangle {
              id: redSquare
              width: 120; height: 120
              anchors.top: parent.top; anchors.left: parent.left; anchors.margins: 10
              color: "red"
              opacity: redSquareMouseArea.containsPress ? 0.6 : 1.0

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

              MouseArea {
                  id: redSquareMouseArea
                  anchors.fill: parent
                  hoverEnabled: true
                  property string buttonID

                  acceptedButtons: Qt.AllButtons
                  // Value 'All.Buttons' is eqivalent to:
                  // 'Qt::LeftButton | Qt::RightButton | Qt::MiddleButton  .... | Qt::ExtraButton24'

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

                  onPressed: {
                      if (mouse.button == Qt.LeftButton)
                          buttonID = 'LeftButton'
                      else if (mouse.button == Qt.RightButton)
                          buttonID = 'RightButton'
                      else if (mouse.button == Qt.MidButton)
                          buttonID = 'MiddleButton'
                      else if (mouse.button == Qt.BackButton)
                          buttonID = 'BackButton'
                      else if (mouse.button == Qt.ForwardButton)
                          buttonID = 'ForwardButton'
                      else if (mouse.button == Qt.TaskButton)
                          buttonID = 'TaskButton'
                      else if (mouse.button == Qt.ExtraButton4)
                          buttonID = 'ExtraButton4'
                      else if (mouse.button == Qt.ExtraButton5)
                          buttonID = 'ExtraButton5'
                      else if (mouse.button == Qt.ExtraButton6)
                          buttonID = 'ExtraButton6'
                      else if (mouse.button == Qt.ExtraButton7)
                          buttonID = 'ExtraButton7'
                      else if (mouse.button == Qt.ExtraButton8)
                          buttonID = 'ExtraButton8'
                      else if (mouse.button == Qt.ExtraButton9)
                          buttonID = 'ExtraButton9'
                      else if (mouse.button == Qt.ExtraButton10)
                          buttonID = 'ExtraButton10'
                      else if (mouse.button == Qt.ExtraButton11)
                          buttonID = 'ExtraButton11'
                      else if (mouse.button == Qt.ExtraButton12)
                          buttonID = 'ExtraButton12'
                      else if (mouse.button == Qt.ExtraButton13)
                          buttonID = 'ExtraButton13'
                      else if (mouse.button == Qt.ExtraButton14)
                          buttonID = 'ExtraButton14'
                      else if (mouse.button == Qt.ExtraButton15)
                          buttonID = 'ExtraButton15'
                      else if (mouse.button == Qt.ExtraButton16)
                          buttonID = 'ExtraButton16'
                      else if (mouse.button == Qt.ExtraButton17)
                          buttonID = 'ExtraButton17'
                      else if (mouse.button == Qt.ExtraButton18)
                          buttonID = 'ExtraButton18'
                      else if (mouse.button == Qt.ExtraButton19)
                          buttonID = 'ExtraButton19'
                      else if (mouse.button == Qt.ExtraButton20)
                          buttonID = 'ExtraButton20'
                      else if (mouse.button == Qt.ExtraButton21)
                          buttonID = 'ExtraButton21'
                      else if (mouse.button == Qt.ExtraButton22)
                          buttonID = 'ExtraButton22'
                      else if (mouse.button == Qt.ExtraButton23)
                          buttonID = 'ExtraButton23'
                      else if (mouse.button == Qt.ExtraButton24)
                          buttonID = 'ExtraButton24'

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

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

          Rectangle {
              id: blueSquare
              width: 120; height: 120
              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: btn.top; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20

              onTextChanged: console.log(text)
          }

          Text {
              id: btn
              anchors.bottom: posInfo.top; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20
          }

          Text {
              id: posInfo
              anchors.bottom: parent.bottom; anchors.horizontalCenter: parent.horizontalCenter; anchors.margins: 20
          }
      }