swipetoremove.qml Example File | Qt Quick Controls 2 5.9

Qt 5.9 | Qt Quick Controls 2 | Qt Quick Controls 2 - Swipe to Remove | swipetoremove.qml Example File

Qt 5.9.3 Reference Documentation

# swipetoremove.qml Example File

swipetoremove/swipetoremove.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 2.8
      import QtQuick.Controls 2.2
      import QtQuick.Controls.Material 2.2

      ApplicationWindow {
          id: window
          width: 300
          height: 400
          visible: true
          title: qsTr("Swipe to Remove")

          ListView {
              id: listView
              anchors.fill: parent

              delegate: SwipeDelegate {
                  id: delegate

                  text: modelData
                  width: parent.width

                  swipe.right: Rectangle {
                      width: parent.width
                      height: parent.height

                      clip: true
                      color: SwipeDelegate.pressed ? "#555" : "#666"

                      Label {
                          font.family: "Fontello"
                          text: delegate.swipe.complete ? "\ue805" // icon-cw-circled
                                                        : "\ue801" // icon-cancel-circled-1

                          padding: 20
                          anchors.fill: parent
                          horizontalAlignment: Qt.AlignRight
                          verticalAlignment: Qt.AlignVCenter

                          opacity: 2 * -delegate.swipe.position

                          color: Material.color(delegate.swipe.complete ? Material.Green : Material.Red, Material.Shade200)
                          Behavior on color { ColorAnimation { } }
                      }

                      Label {
                          text: qsTr("Removed")
                          color: "white"

                          padding: 20
                          anchors.fill: parent
                          horizontalAlignment: Qt.AlignLeft
                          verticalAlignment: Qt.AlignVCenter

                          opacity: delegate.swipe.complete ? 1 : 0
                          Behavior on opacity { NumberAnimation { } }
                      }

                      SwipeDelegate.onClicked: delegate.swipe.close()
                      SwipeDelegate.onPressedChanged: undoTimer.stop()
                  }

                  Timer {
                      id: undoTimer
                      interval: 3600
                      onTriggered: listModel.remove(index)
                  }

                  swipe.onCompleted: undoTimer.start()
              }

              model: ListModel {
                  id: listModel
                  ListElement { text: "Lorem ipsum dolor sit amet" }
                  ListElement { text: "Curabitur sit amet risus" }
                  ListElement { text: "Suspendisse vehicula nisi" }
                  ListElement { text: "Mauris imperdiet libero" }
                  ListElement { text: "Sed vitae dui aliquet augue" }
                  ListElement { text: "Praesent in elit eu nulla" }
                  ListElement { text: "Etiam vitae magna" }
                  ListElement { text: "Pellentesque eget elit euismod" }
                  ListElement { text: "Nulla at enim porta" }
                  ListElement { text: "Fusce tincidunt odio" }
                  ListElement { text: "Ut non ex a ligula molestie" }
                  ListElement { text: "Nam vitae justo scelerisque" }
                  ListElement { text: "Vestibulum pulvinar tellus" }
                  ListElement { text: "Quisque dignissim leo sed gravida" }
              }

              remove: Transition {
                  SequentialAnimation {
                      PauseAnimation { duration: 125 }
                      NumberAnimation { property: "height"; to: 0; easing.type: Easing.InOutQuad }
                  }
              }

              displaced: Transition {
                  SequentialAnimation {
                      PauseAnimation { duration: 125 }
                      NumberAnimation { property: "y"; easing.type: Easing.InOutQuad }
                  }
              }

              ScrollIndicator.vertical: ScrollIndicator { }
          }

          Label {
              id: placeholder
              text: qsTr("Swipe no more")

              anchors.margins: 60
              anchors.fill: parent

              opacity: 0.5
              visible: listView.count === 0

              horizontalAlignment: Qt.AlignHCenter
              verticalAlignment: Qt.AlignVCenter
              wrapMode: Label.WordWrap
              font.pixelSize: 18
          }
      }