transitions.qml Example File

 /****************************************************************************
 **
 ** 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
 **     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 1.0

 /*
     This is exactly the same as states.qml, except that we have appended
     a set of transitions to apply animations when the item changes
     between each state.
 */

 Rectangle {
     id: page
     width: 640; height: 480
     color: "#343434"

     Image {
         id: userIcon
         x: topLeftRect.x; y: topLeftRect.y
         source: "qt-logo.png"
     }

     Rectangle {
         id: topLeftRect

         anchors { left: parent.left; top: parent.top; leftMargin: 10; topMargin: 20 }
         width: 46; height: 54
         color: "Transparent"; border.color: "Gray"; radius: 6

         // Clicking in here sets the state to the default state, returning the image to
         // its initial position
         MouseArea { anchors.fill: parent; onClicked: page.state = '' }
     }

     Rectangle {
         id: middleRightRect

         anchors { right: parent.right; verticalCenter: parent.verticalCenter; rightMargin: 20 }
         width: 46; height: 54
         color: "Transparent"; border.color: "Gray"; radius: 6

         // Clicking in here sets the state to 'middleRight'
         MouseArea { anchors.fill: parent; onClicked: page.state = 'middleRight' }
     }

     Rectangle {
         id: bottomLeftRect

         anchors { left: parent.left; bottom: parent.bottom; leftMargin: 10; bottomMargin: 20 }
         width: 46; height: 54
         color: "Transparent"; border.color: "Gray"; radius: 6

         // Clicking in here sets the state to 'bottomLeft'
         MouseArea { anchors.fill: parent; onClicked: page.state = 'bottomLeft' }
     }

     states: [
         // In state 'middleRight', move the image to middleRightRect
         State {
             name: "middleRight"
             PropertyChanges { target: userIcon; x: middleRightRect.x; y: middleRightRect.y }
         },

         // In state 'bottomLeft', move the image to bottomLeftRect
         State {
             name: "bottomLeft"
             PropertyChanges { target: userIcon; x: bottomLeftRect.x; y: bottomLeftRect.y  }
         }
     ]

     // Transitions define how the properties change when the item moves between each state
     transitions: [

         // When transitioning to 'middleRight' move x,y over a duration of 1 second,
         // with OutBounce easing function.
         Transition {
             from: "*"; to: "middleRight"
             NumberAnimation { properties: "x,y"; easing.type: Easing.OutBounce; duration: 1000 }
         },

         // When transitioning to 'bottomLeft' move x,y over a duration of 2 seconds,
         // with InOutQuad easing function.
         Transition {
             from: "*"; to: "bottomLeft"
             NumberAnimation { properties: "x,y"; easing.type: Easing.InOutQuad; duration: 2000 }
         },

         // For any other state changes move x,y linearly over duration of 200ms.
         Transition {
             NumberAnimation { properties: "x,y"; duration: 200 }
         }
     ]
 }