components/workspace/KeyboardLayoutSwitcher.qml

0001 /*
0002     SPDX-FileCopyrightText: 2014 Daniel Vrátil <dvratil@redhat.com>
0003     SPDX-FileCopyrightText: 2020 Andrey Butirsky <butirsky@gmail.com>
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006
0007 import QtQuick 2.12
0008 import org.kde.plasma.workspace.keyboardlayout 1.0
0009
0010 MouseArea {
0011     property alias keyboardLayout: keyboardLayout
0012     readonly property bool hasMultipleKeyboardLayouts: keyboardLayout.layoutsList.length > 1
0013     readonly property var layoutNames: keyboardLayout.layoutsList.length ? keyboardLayout.layoutsList[keyboardLayout.layout]
0014                                                                          : { shortName: "", displayName: "", longName: "" }
0015
0016     onClicked: keyboardLayout.switchToNextLayout()
0017
0018     property int wheelDelta: 0
0019
0020     onWheel: {
0021         // Magic number 120 for common "one click"
0022         // See: https://qt-project.org/doc/qt-5/qml-qtquick-wheelevent.html#angleDelta-prop
0023         var delta = wheel.angleDelta.y || wheel.angleDelta.x;
0024         wheelDelta += delta;
0025         while (wheelDelta >= 120) {
0026             wheelDelta -= 120;
0027             keyboardLayout.switchToPreviousLayout();
0028         }
0029         while (wheelDelta <= -120) {
0030             wheelDelta += 120;
0031             keyboardLayout.switchToNextLayout();
0032         }
0033     }
0034
0035     KeyboardLayout {
0036         id: keyboardLayout
0037     }
0038 }