ControlView.qml Example File

 /****************************************************************************
 **
 ** Copyright (C) 2016 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 2.2
 import QtQuick.Controls 1.1

 Rectangle {
     id: view
     color: darkBackground ? "transparent" : lightBackgroundColor

     Keys.onReleased: {
         if (event.key === Qt.Key_Back) {
             stackView.pop();
             event.accepted = true;
         }
     }

     property bool darkBackground: true

     property Component control
     property Component customizer

     property alias controlItem: controlLoader.item
     property alias customizerItem: customizerLoader.item

     property bool isCustomizerVisible: false

     property real margin: root.toPixels(0.05)

     property rect controlBounds: Qt.rect(largestControlItem.x + controlBoundsItem.x,
         largestControlItem.y + controlBoundsItem.y, controlBoundsItem.width, controlBoundsItem.height)

     Item {
         id: largestControlItem
         x: margin
         y: margin
         width: isCustomizerVisible ? widthWhenCustomizing : widthWhenNotCustomizing
         height: isCustomizerVisible ? heightWhenCustomizing : heightWhenNotCustomizing

         readonly property real widthWhenCustomizing: (!isScreenPortrait ? parent.width / 2 : parent.width) - margin * 2
         readonly property real heightWhenCustomizing: (isScreenPortrait ? parent.height / 2 : parent.height - toolbar.height) - margin * 2
         readonly property real widthWhenNotCustomizing: parent.width - margin * 2
         readonly property real heightWhenNotCustomizing: parent.height - toolbar.height - margin * 2

         Item {
             id: controlBoundsItem
             x: parent.width / 2 - controlBoundsItem.width / 2
             y: customizer && customizerItem.visible ? 0 : (isScreenPortrait ? (parent.height / 2) - (controlBoundsItem.height / 2) : 0)
             width: Math.min(parent.widthWhenCustomizing, parent.widthWhenNotCustomizing)
             height: Math.min(parent.heightWhenCustomizing, parent.heightWhenNotCustomizing)

             Behavior on x {
                 id: controlXBehavior
                 enabled: false
                 NumberAnimation {}
             }

             Behavior on y {
                 id: controlYBehavior
                 enabled: false
                 NumberAnimation {}
             }

             Loader {
                 id: controlLoader
                 sourceComponent: control
                 anchors.centerIn: parent

                 property alias view: view
             }
         }
     }

     Flickable {
         id: flickable
         // Hide the customizer on the right of the screen if it's not visible.
         x: (isScreenPortrait ? 0 : (isCustomizerVisible ? largestControlItem.x + largestControlItem.width + margin : view.width)) + margin
         y: (isScreenPortrait ? largestControlItem.y + largestControlItem.height : 0) + margin
         width: largestControlItem.width
         height: parent.height - y - toolbar.height - margin
         anchors.leftMargin: margin
         anchors.rightMargin: margin
         visible: customizerLoader.opacity > 0

         flickableDirection: Flickable.VerticalFlick

         clip: true
         contentWidth: width
         contentHeight: customizerLoader.height

         Behavior on x {
             id: flickableXBehavior
             enabled: false
             NumberAnimation {}
         }

         Behavior on y {
             id: flickableYBehavior
             enabled: false
             NumberAnimation {}
         }

         Loader {
             id: customizerLoader
             sourceComponent: customizer
             opacity: 0
             width: flickable.width

             property alias view: view

             Behavior on opacity {
                 NumberAnimation {
                     duration: 300
                 }
             }
         }
     }

     ControlViewToolbar {
         id: toolbar

         onCustomizeClicked: {
             controlXBehavior.enabled = !isScreenPortrait;
             controlYBehavior.enabled = isScreenPortrait;

             isCustomizerVisible = !isCustomizerVisible;

             if (isScreenPortrait) {
                 flickableXBehavior.enabled = false;
                 flickableYBehavior.enabled = true;
             } else {
                 flickableXBehavior.enabled = true;
                 flickableYBehavior.enabled = false;
             }

             customizerLoader.opacity = isCustomizerVisible ? 1 : 0;
         }
     }

     FlickableMoreIndicator {
         flickable: flickable
         atTop: true
         gradientColor: view.darkBackground ? darkBackgroundColor : lightBackgroundColor
     }

     FlickableMoreIndicator {
         flickable: flickable
         atTop: false
         gradientColor: view.darkBackground ? darkBackgroundColor : lightBackgroundColor
     }
 }