- Qt 5.5
- Qt Quick
- Qt Quick Examples - Touch Interaction
- flickresize.qml Example File
- Qt 5.5.1 Reference Documentation

# flickresize.qml Example File

touchinteraction/pincharea/flickresize.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
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    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
                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()
                }

                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
                            }
                        }
                    }
                }
            }
        }
    }