objectmodel.qml Example File | Qt Quick 5.12.5

Qt 5.12 | Qt Quick | Qt Quick Examples - Views | objectmodel.qml Example File

Qt 5.12.5 Reference Documentation

# objectmodel.qml Example File

views/objectmodel/objectmodel.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."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      // This example demonstrates placing items in a view using
      // an ObjectModel

      import QtQuick 2.0
      import QtQml.Models 2.1

      Rectangle {
          id: root
          color: "lightgray"
          width: 320
          height: 480
          property bool printDestruction: false

          ObjectModel {
              id: itemModel

              Rectangle {
                  width: view.width; height: view.height
                  color: "#FFFEF0"
                  Text { text: "Page 1"; font.bold: true; anchors.centerIn: parent }

                  Component.onDestruction: if (printDestruction) print("destroyed 1")
              }
              Rectangle {
                  width: view.width; height: view.height
                  color: "#F0FFF7"
                  Text { text: "Page 2"; font.bold: true; anchors.centerIn: parent }

                  Component.onDestruction: if (printDestruction) print("destroyed 2")
              }
              Rectangle {
                  width: view.width; height: view.height
                  color: "#F4F0FF"
                  Text { text: "Page 3"; font.bold: true; anchors.centerIn: parent }

                  Component.onDestruction: if (printDestruction) print("destroyed 3")
              }
          }

          ListView {
              id: view
              anchors { fill: parent; bottomMargin: 30 }
              model: itemModel
              preferredHighlightBegin: 0; preferredHighlightEnd: 0
              highlightRangeMode: ListView.StrictlyEnforceRange
              orientation: ListView.Horizontal
              snapMode: ListView.SnapOneItem; flickDeceleration: 2000
              cacheBuffer: 200
          }
          Rectangle {
              width: root.width; height: 30
              anchors { top: view.bottom; bottom: parent.bottom }
              color: "gray"

              Row {
                  anchors.centerIn: parent
                  spacing: 20

                  Repeater {
                      model: itemModel.count

                      Rectangle {
                          width: 5; height: 5
                          radius: 3
                          color: view.currentIndex == index ? "blue" : "white"

                          MouseArea {
                              width: 20; height: 20
                              anchors.centerIn: parent
                              onClicked: view.currentIndex = index
                          }
                      }
                  }
              }
          }
      }