Navibutton.qml Example File

  /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtCanvas3D module 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 2.0
  import QtQuick.Layouts 1.1

  Text {
      id: menubarItem
      text: ""
      font.family: "Helvetica"
      font.pointSize: 20
      font.weight: Font.Light
      color: "#404244"
      Layout.alignment: Qt.AlignHCenter
      state: "default"
      verticalAlignment: Text.AlignVCenter
      property bool selected: false
      property string stateSelect: ""
      property Item stateTarget

      states: [
          State {
              name: "default"
              when: !menubarItem.selected
              PropertyChanges { target: menubarItem; color: "#404244"; }
              PropertyChanges { target: selectedHighlight; height: 0; }
          },
          State {
              name: "mouseover"
              PropertyChanges { target: menubarItem; color: "#5caa15"; }
              PropertyChanges { target: selectedHighlight; height: 4; }
          },
          State {
              name: "selected"
              when: menubarItem.selected
              PropertyChanges { target: menubarItem; color: "#5caa15"; }
              PropertyChanges { target: selectedHighlight; height: 4; }
          }
      ]

      onStateChanged: {
          if (state == "selected") {
              menubarItem.stateTarget.state = menubarItem.stateSelect;
          }
      }

      transitions: [
          Transition {
              from: "*"
              to: "*"
              ColorAnimation {
                  properties: "color"
                  easing.type: Easing.InOutCubic
                  duration: 250
              }
          }
      ]

      Rectangle {
          id: selectedHighlight
          color: "#7cc54d"
          width: parent.width
          anchors.bottom: parent.bottom
          height: 0

          Behavior on height {

                      NumberAnimation {
                          easing.type: Easing.InOutCubic
                          duration: 250
                      }
                  }
      }

      MouseArea {
          id: mouseArea
          anchors.fill: parent
          hoverEnabled: true

          onPressed: {
              menubarItem.state = "mouseover";
          }

          onReleased: {
              if (menubarItem.state == "mouseover") {
                  menubarItem.selected = true;
              }
          }

          onEntered: {
              menubarItem.state = "mouseover";
          }

          onExited: {
              if (menubarItem.selected) {
                  menubarItem.state = "selected";
              } else {
                  menubarItem.state = "default";
              }
          }
      }
  }