- Qt 5.3
- Qt Quick
- Qt Quick Examples - Animation
- wigglytext.qml Example File
- Qt 5.3.2 Reference Documentation

# wigglytext.qml Example File

animation/behaviors/wigglytext.qml

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** 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
    **     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 Digia Plc and its Subsidiary(-ies) 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
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    import QtQuick 2.0

    Rectangle {
        id: container

        property string text: "Drag me!"
        property bool animated: true

        width: 320; height: 480; color: "#474747"; focus: true

        Keys.onPressed: {
            if (event.key == Qt.Key_Delete || event.key == Qt.Key_Backspace)
                container.remove()
            else if (event.text != "") {
                container.append(event.text)
            }
        }

        function append(text) {
            container.animated = false
            var lastLetter = container.children[container.children.length - 1]
            var newLetter = letterComponent.createObject(container)
            newLetter.text = text
            newLetter.follow = lastLetter
            container.animated = true
        }

        function remove() {
            if (container.children.length)
                container.children[container.children.length - 1].destroy()
        }

        function doLayout() {
            var follow = null
            for (var i = 0; i < container.text.length; ++i) {
                var newLetter = letterComponent.createObject(container)
                newLetter.text = container.text[i]
                newLetter.follow = follow
                follow = newLetter
            }
        }

        Component {
            id: letterComponent
            Text {
                id: letter
                property variant follow

                x: follow ? follow.x + follow.width : container.width / 6
                y: follow ? follow.y : container.height / 2

                font.pixelSize: 40; font.bold: true
                color: "#999999"; styleColor: "#222222"; style: Text.Raised

                MouseArea {
                    anchors.fill: parent
                    drag.target: letter; drag.axis: Drag.XAndYAxis
                    onPressed: letter.color = "#dddddd"
                    onReleased: letter.color = "#999999"
                }

                Behavior on x { enabled: container.animated; SpringAnimation { spring: 3; damping: 0.3; mass: 1.0 } }
                Behavior on y { enabled: container.animated; SpringAnimation { spring: 3; damping: 0.3; mass: 1.0 } }
            }
        }

        Component.onCompleted: doLayout()
    }