- Qt 5.5
- Qt Quick
- Qt Quick Examples - Animation
- behavior-example.qml Example File
- Qt 5.5.1 Reference Documentation

# behavior-example.qml Example File

animation/behaviors/behavior-example.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.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** 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
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    **     notice, this list of conditions and the following disclaimer in
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    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    import QtQuick 2.0

    Rectangle {
        width: 320; height: 480
        color: "#343434"

        Rectangle {
            anchors.centerIn: parent
            width: 200; height: 200
            radius: 30
            color: "transparent"
            border.width: 4; border.color: "white"

            SideRect {
                id: leftRect
                anchors { verticalCenter: parent.verticalCenter; horizontalCenter: parent.left }
                text: "Left"
            }

            SideRect {
                id: rightRect
                anchors { verticalCenter: parent.verticalCenter; horizontalCenter: parent.right }
                text: "Right"
            }

            SideRect {
                id: topRect
                anchors { verticalCenter: parent.top; horizontalCenter: parent.horizontalCenter }
                text: "Top"
            }

            SideRect {
                id: bottomRect
                anchors { verticalCenter: parent.bottom; horizontalCenter: parent.horizontalCenter }
                text: "Bottom"
            }

            Rectangle {
                id: focusRect

                property string text

                x: 62; y: 75; width: 75; height: 50
                radius: 6
                border.width: 4; border.color: "white"
                color: "firebrick"

                // Set an 'elastic' behavior on the focusRect's x property.
                Behavior on x {
                    NumberAnimation { easing.type: Easing.OutElastic; easing.amplitude: 3.0; easing.period: 2.0; duration: 300 }
                }

                // Set an 'elastic' behavior on the focusRect's y property.
                Behavior on y {
                    NumberAnimation { easing.type: Easing.OutElastic; easing.amplitude: 3.0; easing.period: 2.0; duration: 300 }
                }

                Text {
                    id: focusText
                    text: focusRect.text
                    anchors.centerIn: parent
                    color: "white"
                    font.pixelSize: 16; font.bold: true

                    // Set a behavior on the focusText's x property:
                    // Set the opacity to 0, set the new text value, then set the opacity back to 1.
                    Behavior on text {
                        SequentialAnimation {
                            NumberAnimation { target: focusText; property: "opacity"; to: 0; duration: 150 }
                            NumberAnimation { target: focusText; property: "opacity"; to: 1; duration: 150 }
                        }
                    }
                }
            }
        }
    }