/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kwin/decoration/MenuButton.qml is in kwin-common 4:5.12.4-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
import QtQuick 2.0
import org.kde.kquickcontrolsaddons 2.0 as KQuickControlsAddons
import org.kde.kwin.decoration 0.1
DecorationButton {
property bool closeOnDoubleClick: decorationSettings.closeOnDoubleClickOnMenu
id: menuButton
buttonType: DecorationOptions.DecorationButtonMenu
KQuickControlsAddons.QIconItem {
icon: decoration.client.icon
anchors.fill: parent
}
DecorationOptions {
id: options
deco: decoration
}
Timer {
id: timer
interval: options.mousePressAndHoldInterval
repeat: false
onTriggered: decoration.requestShowWindowMenu()
}
MouseArea {
anchors.fill: parent
acceptedButtons: Qt.LeftButton | Qt.RightButton
onPressed: {
parent.pressed = true;
// we need a timer to figure out whether there is a double click in progress or not
// if we have a "normal" click we want to open the context menu. This would eat our
// second click of the double click. To properly get the double click we have to wait
// the double click delay to ensure that it was only a single click.
if (timer.running) {
timer.stop();
} else if (menuButton.closeOnDoubleClick) {
timer.start();
}
}
onReleased: {
parent.pressed = false;
timer.stop();
}
onExited: {
if (!parent.pressed) {
return;
}
if (timer.running) {
timer.stop();
}
parent.pressed = false;
}
onClicked: {
// for right clicks we show the menu instantly
// and if the option is disabled we always show menu directly
if (!menuButton.closeOnDoubleClick || mouse.button == Qt.RightButton) {
decoration.requestShowWindowMenu();
timer.stop();
}
}
onDoubleClicked: {
if (menuButton.closeOnDoubleClick) {
decoration.requestClose();
}
}
}
}
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