/****************************************************************************
**
** 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 2.0

Rectangle {
    width: 640
    height: 360
    color: "gray"

    Flickable {
        id: flick
        anchors.fill: parent
        contentWidth: 500
        contentHeight: 500

        PinchArea {
            width: Math.max(flick.contentWidth, flick.width)
            height: Math.max(flick.contentHeight, flick.height)

            property real initialWidth
            property real initialHeight
            //![0]
            onPinchStarted: {
                initialWidth = flick.contentWidth
                initialHeight = flick.contentHeight
            }

            onPinchUpdated: {
                // adjust content pos due to drag
                flick.contentX += pinch.previousCenter.x - pinch.center.x
                flick.contentY += pinch.previousCenter.y - pinch.center.y

                // resize content
                flick.resizeContent(initialWidth * pinch.scale, initialHeight * pinch.scale, pinch.center)
            }

            onPinchFinished: {
                // Move its content within bounds.
                flick.returnToBounds()
            }
            //![0]

            Rectangle {
                width: flick.contentWidth
                height: flick.contentHeight
                color: "white"
                Image {
                    anchors.fill: parent
                    source: "qt-logo.jpg"
                    MouseArea {
                        anchors.fill: parent
                        onDoubleClicked: {
                            flick.contentWidth = 500
                            flick.contentHeight = 500
                        }
                    }
                }
            }
        }
    }
}
