plasma-framework/declarativeimports/plasmacomponents/qml/TabBar.qml

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** Copyright 2011 Marco Martin <mart@kde.org>
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/**Documented API
Inherits:
        DualStateButton

Imports:
        QtQuick 1.1
        org.kde.plasma.core

Description:
        TabBar is a plasma themed component that you can
        use as a container for the tab buttons.

Properties:
        Item currentTab:
        Returns the current tabbar button.

        default alias content:
        This property represends the the content of
        the TabBarLayout.

        Item tabBarLayout:
        This is an alias for the layout of the tabbar.
**/

import QtQuick 1.1
import org.kde.plasma.core 0.1 as PlasmaCore
import "private" as Private

FocusScope {
    id: root
    default property alias content: tabBarLayout.data
    property alias layout: tabBarLayout

    //Plasma extension
    property Item currentTab

    implicitWidth: tabBarLayout.implicitWidth + backgroundFrame.margins.left + backgroundFrame.margins.right + (buttonFrame.margins.left + buttonFrame.margins.right)*tabBarLayout.children.length
    implicitHeight: tabBarLayout.implicitHeight + backgroundFrame.margins.top + backgroundFrame.margins.bottom + buttonFrame.margins.top + buttonFrame.margins.bottom

    PlasmaCore.FrameSvgItem {
        id: backgroundFrame

        anchors.fill: parent
        imagePath: "widgets/frame"
        prefix: "sunken"
    }

    PlasmaCore.FrameSvgItem {
        id: buttonFrame

        x: currentTab.x + backgroundFrame.margins.left
        y: backgroundFrame.margins.top
        width: currentTab.width + buttonFrame.margins.left + buttonFrame.margins.right
        height: currentTab.height + buttonFrame.margins.top + buttonFrame.margins.bottom
        imagePath: "widgets/button"
        prefix: "normal"
        Behavior on x {
            PropertyAnimation {
                easing.type: Easing.InQuad
                duration: 250
            }
        }
    }

    Private.TabBarLayout {
        id: tabBarLayout
        anchors {
            fill: parent
            leftMargin: backgroundFrame.margins.left + buttonFrame.margins.left
            topMargin: backgroundFrame.margins.top + buttonFrame.margins.top
            rightMargin: backgroundFrame.margins.right + buttonFrame.margins.right
            bottomMargin: backgroundFrame.margins.bottom + buttonFrame.margins.bottom
        }
        Component.onCompleted: {
            if (!root.currentTab) {
                root.currentTab = tabBarLayout.children[0]
            }
        }
    }
}