qt-everywhere-src-5.14.1/qtgraphicaleffects/tests/manual/testbed/Control.qml

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import QtQuick 2.12

Item {
    id: control
    property string caption: ""
    default property alias children: controlsColumn.children
    property bool last: false

    property bool __hide: caption == "advanced"

    anchors {left: parent.left; right: parent.right}
    height: __hide ? 30 : controlsColumn.height + 40

    Behavior on height {
        id: heightBehavior
        enabled: false
        NumberAnimation { duration: 100 }
    }

    Image {
        source: "images/group_top.png"
        anchors {top: parent.top; left: parent.left; right: parent.right}
    }

    Image {
        source: "images/group_bottom.png"
        anchors.bottom: parent.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        smooth: true
        visible: !last || __hide
    }

    Text {
        id: sectionText
        anchors {left: parent.left; top: parent.top; leftMargin: 11; topMargin: 8}
        color: "white"
        font.family: "Arial"
        font.bold: true
        font.pixelSize: 12
        text: caption
    }

    Image {
        anchors {right: parent.right; rightMargin: 5; top: parent.top}
        source: __hide ? "images/expand.png" : "images/collapse.png"
    }

    MouseArea {
        anchors.top: parent.top
        anchors.left: parent.left
        anchors.right: parent.right
        height: 30
        onClicked: {
            heightBehavior.enabled = true
            control.__hide = !control.__hide
        }
    }

    Column {
        id: controlsColumn
        anchors.top: parent.top
        anchors.topMargin: 30
        anchors.left: parent.left
        anchors.right: parent.right
        opacity: !__hide
        Behavior on opacity {
            NumberAnimation { duration: 100 }
        }
    }
}