behavior-example.qml Example File

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 import Qt 4.7

 Rectangle {
     width: 600; height: 400
     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 }
                     }
                 }
             }
         }
     }
 }