Differential D5301 Diff 13245 keyboard_layout_switching.cpp

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keyboard_layout_switching.cpp

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		1		/********************************************************************
		2		KWin - the KDE window manager
		3		This file is part of the KDE project.
		4
		5		Copyright (C) 2017 Martin Gräßlin <mgraesslin@kde.org>
		6
		7		This program is free software; you can redistribute it and/or modify
		8		it under the terms of the GNU General Public License as published by
		9		the Free Software Foundation; either version 2 of the License, or
		10		(at your option) any later version.
		11
		12		This program is distributed in the hope that it will be useful,
		13		but WITHOUT ANY WARRANTY; without even the implied warranty of
		14		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		15		GNU General Public License for more details.
		16
		17		You should have received a copy of the GNU General Public License
		18		along with this program. If not, see <http://www.gnu.org/licenses/>.
		19		*********************************************************************/
		20		#include "keyboard_layout_switching.h"
		21		#include "keyboard_layout.h"
		22		#include "virtualdesktops.h"
		23		#include "xkb.h"
		24
		25		namespace KWin
		26		{
		27
		28		namespace KeyboardLayoutSwitching
		29		{
		30
		31		Policy::Policy(Xkb xkb, KeyboardLayout layout)
		32		: QObject(layout)
		33		, m_xkb(xkb)
		34		, m_layout(layout)
		35		{
		36		connect(m_layout, &KeyboardLayout::layoutsReconfigured, this, &Policy::clearCache);
		37		connect(m_layout, &KeyboardLayout::layoutChanged, this, &Policy::layoutChanged);
		38		}
		39
		40		Policy::~Policy() = default;
		41
		42		void Policy::setLayout(quint32 layout)
		43		{
		44		m_xkb->switchToLayout(layout);
		45		}
		46
		47		quint32 Policy::layout() const
		48		{
		49		return m_xkb->currentLayout();
		50		}
		51
		52		Policy Policy::create(Xkb xkb, KeyboardLayout *layout, const QString &policy)
		53		{
		54		if (policy.toLower() == QStringLiteral("desktop")) {
		55		return new VirtualDesktopPolicy(xkb, layout);
		56		}
		57		return new GlobalPolicy(xkb, layout);
		58		}
		59
		60		GlobalPolicy::GlobalPolicy(Xkb xkb, KeyboardLayout layout)
		61		: Policy(xkb, layout)
		62		{
		63		}
		64
		65		GlobalPolicy::~GlobalPolicy() = default;
		66
		67		VirtualDesktopPolicy::VirtualDesktopPolicy(Xkb xkb, KeyboardLayout layout)
		68		: Policy(xkb, layout)
		69		{
		70		connect(VirtualDesktopManager::self(), &VirtualDesktopManager::currentChanged, this, &VirtualDesktopPolicy::desktopChanged);
		71		}
		72
		73		VirtualDesktopPolicy::~VirtualDesktopPolicy() = default;
		74
		75		void VirtualDesktopPolicy::clearCache()
		76		{
		77		m_layouts.clear();
		78		}
		79
		80		void VirtualDesktopPolicy::desktopChanged()
		81		{
		82		auto d = VirtualDesktopManager::self()->currentDesktop();
		83		if (!d) {
		84		return;
		85		}
		86		auto it = m_layouts.constFind(d);
		87		if (it == m_layouts.constEnd()) {
		88		// new desktop - go to default;
		89		setLayout(0);
		90		} else {
		91		setLayout(it.value());
		92		}
		93		}
		94
		95		void VirtualDesktopPolicy::layoutChanged()
		96		{
		97		auto d = VirtualDesktopManager::self()->currentDesktop();
		98		if (!d) {
		99		return;
		100		}
		101		auto it = m_layouts.find(d);
		102		const auto l = layout();
		103		if (it == m_layouts.constEnd()) {
		104		m_layouts.insert(d, l);
		105		connect(d, &VirtualDesktop::aboutToBeDestroyed, this,
		106		[this, d] {
		107		m_layouts.remove(d);
		108		}
		109		);
		110		} else {
		111		if (it.value() == l) {
		112		return;
		113		}
		114		it.value() = l;
		115		}
		116		}
		117
		118		}
		119		}