shift-shell/shell/contents/views/Panel.qml

/*
 *  SPDX-FileCopyrightText: 2012 Marco Martin <mart@kde.org>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */

import QtQuick
import QtQuick.Layouts

import org.kde.plasma.core as PlasmaCore

Rectangle {
    id: root

    visible: false //adjust borders is run during setup. We want to avoid painting till completed
    property Item containment

    color: !containment || containment.plasmoid.backgroundHints == PlasmaCore.Types.NoBackground ? "transparent" : Kirigami.Theme.textColor

    onContainmentChanged: {
        containment.parent = root;
        containment.visible = true;
        containment.anchors.fill = root;
    }

    Binding {
        target: panel
        property: "backgroundHints"
        when: containment
        value: {
            if (!containment) {
                return;
            }

            return containment.plasmoid.backgroundHints;
        }
        restoreMode: Binding.RestoreBinding
    }

    Component.onCompleted: {
        visible = true
    }
}