examples/declarative/animation/states/transitions.qml
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtDeclarative module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:BSD$
       
    10 ** You may use this file under the terms of the BSD license as follows:
       
    11 **
       
    12 ** "Redistribution and use in source and binary forms, with or without
       
    13 ** modification, are permitted provided that the following conditions are
       
    14 ** met:
       
    15 **   * Redistributions of source code must retain the above copyright
       
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    21 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
       
    22 **     the names of its contributors may be used to endorse or promote
       
    23 **     products derived from this software without specific prior written
       
    24 **     permission.
       
    25 **
       
    26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
       
    27 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
       
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    30 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       
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    36 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
       
    37 ** $QT_END_LICENSE$
       
    38 **
       
    39 ****************************************************************************/
       
    40 
       
    41 import Qt 4.7
       
    42 
       
    43 /*
       
    44     This is exactly the same as states.qml, except that we have appended
       
    45     a set of transitions to apply animations when the item changes 
       
    46     between each state.
       
    47 */
       
    48 
       
    49 Rectangle {
       
    50     id: page
       
    51     width: 640; height: 480
       
    52     color: "#343434"
       
    53 
       
    54     Image { 
       
    55         id: userIcon
       
    56         x: topLeftRect.x; y: topLeftRect.y
       
    57         source: "user.png"
       
    58     }
       
    59 
       
    60     Rectangle {
       
    61         id: topLeftRect
       
    62 
       
    63         anchors { left: parent.left; top: parent.top; leftMargin: 10; topMargin: 20 }
       
    64         width: 64; height: 64
       
    65         color: "Transparent"; border.color: "Gray"; radius: 6
       
    66 
       
    67         // Clicking in here sets the state to the default state, returning the image to
       
    68         // its initial position
       
    69         MouseArea { anchors.fill: parent; onClicked: page.state = '' }
       
    70     }
       
    71 
       
    72     Rectangle {
       
    73         id: middleRightRect
       
    74 
       
    75         anchors { right: parent.right; verticalCenter: parent.verticalCenter; rightMargin: 20 }
       
    76         width: 64; height: 64
       
    77         color: "Transparent"; border.color: "Gray"; radius: 6
       
    78 
       
    79         // Clicking in here sets the state to 'middleRight'
       
    80         MouseArea { anchors.fill: parent; onClicked: page.state = 'middleRight' }
       
    81     }
       
    82 
       
    83     Rectangle {
       
    84         id: bottomLeftRect
       
    85 
       
    86         anchors { left: parent.left; bottom: parent.bottom; leftMargin: 10; bottomMargin: 20 }
       
    87         width: 64; height: 64
       
    88         color: "Transparent"; border.color: "Gray"; radius: 6
       
    89 
       
    90         // Clicking in here sets the state to 'bottomLeft'
       
    91         MouseArea { anchors.fill: parent; onClicked: page.state = 'bottomLeft' }
       
    92     }
       
    93 
       
    94     states: [
       
    95         // In state 'middleRight', move the image to middleRightRect
       
    96         State {
       
    97             name: "middleRight"
       
    98             PropertyChanges { target: userIcon; x: middleRightRect.x; y: middleRightRect.y }
       
    99         },
       
   100 
       
   101         // In state 'bottomLeft', move the image to bottomLeftRect
       
   102         State {
       
   103             name: "bottomLeft"
       
   104             PropertyChanges { target: userIcon; x: bottomLeftRect.x; y: bottomLeftRect.y  }
       
   105         }
       
   106     ]
       
   107 
       
   108     // Transitions define how the properties change when the item moves between each state
       
   109     transitions: [
       
   110 
       
   111         // When transitioning to 'middleRight' move x,y over a duration of 1 second,
       
   112         // with OutBounce easing function.
       
   113         Transition {
       
   114             from: "*"; to: "middleRight"
       
   115             NumberAnimation { properties: "x,y"; easing.type: Easing.OutBounce; duration: 1000 }
       
   116         },
       
   117 
       
   118         // When transitioning to 'bottomLeft' move x,y over a duration of 2 seconds,
       
   119         // with InOutQuad easing function.
       
   120         Transition {
       
   121             from: "*"; to: "bottomLeft"
       
   122             NumberAnimation { properties: "x,y"; easing.type: Easing.InOutQuad; duration: 2000 }
       
   123         },
       
   124 
       
   125         // For any other state changes move x,y linearly over duration of 200ms.
       
   126         Transition {
       
   127             NumberAnimation { properties: "x,y"; duration: 200 }
       
   128         }
       
   129     ]
       
   130 }