Qt 5.11 | Qt Quick Controls 2 | Qt Quick Controls 2 - Gallery | StackViewPage.qml Example File

Qt 5.11.3 Reference Documentation

# StackViewPage.qml Example File

gallery/pages/StackViewPage.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 2.6
      import QtQuick.Controls 2.1

      StackView {
          id: stackView
          initialItem: page

          Component {
              id: page

              Pane {
                  id: pane
                  width: parent ? parent.width : 0 // TODO: fix null parent on destruction

                  Column {
                      spacing: 40
                      width: parent.width

                      Label {
                          width: parent.width
                          wrapMode: Label.Wrap
                          horizontalAlignment: Qt.AlignHCenter
                          text: "StackView provides a stack-based navigation model which can be used with a set of interlinked pages. "
                          + "Items are pushed onto the stack as the user navigates deeper into the material, and popped off again "
                          + "when he chooses to go back."
                      }

                      Button {
                          id: button
                          text: "Push"
                          anchors.horizontalCenter: parent.horizontalCenter
                          width: Math.max(button.implicitWidth, Math.min(button.implicitWidth * 2, pane.availableWidth / 3))
                          onClicked: stackView.push(page)
                      }

                      Button {
                          text: "Pop"
                          enabled: stackView.depth > 1
                          width: Math.max(button.implicitWidth, Math.min(button.implicitWidth * 2, pane.availableWidth / 3))
                          anchors.horizontalCenter: parent.horizontalCenter
                          onClicked: stackView.pop()
                      }
                  }
              }
          }
      }