[Interest] OpacityAnimator does not work as expect?

[Yuchen Deng]

CODE:

> import QtQuick 2.2
> import QtQuick.Controls 1.2
> Rectangle {
>     id: plugin
>     width: 800; height: 600
>     OpacityAnimator on opacity {
>         from: 0; to: 1; duration: 1000
>         running: true
>     }
>     Column {
>         id: option
>         anchors.right: parent.right
>         anchors.top: parent.top
>         anchors.margins: 10
>         spacing: 10
>         Grid {
>             columns: 2
>             spacing: 5
>             Label { text: "ax:" }
>             TextField {
>                 id: ax
>                 width: 99
>             }
>             Label { text: "ay:" }
>             TextField {
>                 id: ay
>                 width: 99
>             }
>         }
>     }
>     Row {
>         id: control
>         anchors.bottom: parent.bottom
>         anchors.right: parent.right
>         anchors.margins: 10
>         spacing: 5
>         height: 30
>         Button {
>             id: start
>             text: "start"
>             focus: true
>             onClicked: {
>                 start.enabled = false
>             }
>         }
>         Button {
>             id: pause
>             enabled: !start.enabled
>             text: "pause"
>             focus: true
>         }
>         Button {
>             id: restore
>             text: "restore"
>             focus: true
>             enabled: !start.enabled
>             onClicked: {
>                 start.enabled = true
>             }
>         }
>         Button {
>             id: quit
>             text: "quit"
>             onClicked: Qt.quit();
>         }
>     }
>     states: [
>         State {
>             name: "hide"
>             when: !start.enabled
>             PropertyChanges { target: option; visible: false }
>         }
>     ]
>     transitions: [
>         Transition {
>             from: "*"; to: "hide"; reversible: true
>             OpacityAnimator { duration: 500 }
>         }
>     ]
> }


Could some one help does am I missing something?
Thanks!

-- 
Best Regards
Yuchen
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