PlasmaSliderHeight.qml

import QtQuick 2.5
import QtQuick.Layouts 1.3
import QtQuick.Layouts 1.0
import QtQuick.Window 2.1
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.0
import QtMultimedia 5.6
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.components 2.0 as PlasmaComponents
import org.kde.plasma.extras 2.0 as PlasmaExtras
import QtWebKit 3.0
import org.kde.draganddrop 2.0 as DragAndDrop

Window {
	id: window
	x: 0
	y: 0
	width: 300
	height: 300

	MouseArea {
		anchors.fill: parent
		acceptedButtons: Qt.LeftButton
		onClicked: Qt.quit(0)
	}

	Rectangle {
		anchors.fill: parent
		color: "#386" //theme.backgroundColor
	}

	// Connections {
	// 	target: slider
	// 	onHeightChanged: console.log(theme.themeName + ':', height + 'px')
	// }

	RowLayout {
		anchors.left: parent.left
		anchors.right: parent.right
		anchors.verticalCenter: parent.verticalCenter
		Layout.preferredHeight: slider.height
		
		onHeightChanged: logTimer.restart()

		PlasmaComponents.Slider {
			id: slider
			Layout.fillWidth: true
		}
	}

	Connections {
		target: theme
		onThemeNameChanged: logTimer.restart()
	}

	Timer {
		id: logTimer
		interval: 200
		onTriggered: console.log(theme.themeName + ':', slider.height + 'px')
	}
}