7fffe99328
Due to being a compositor, kwin has to conform to some certain interfaces. It means a lot of virtual functions and function tables to integrate with C APIs. Naturally, we not always want to use every argument in such functions. Since we get -Wunused-parameter from -Wall, we have to plumb those unused arguments in order to suppress compiler warnings at the moment. However, I don't think that extra work is worth it. We cannot change or alter prototypes in any way to fix the warning the desired way. Q_UNUSED and similar macros are not good indicators of whether an argument is used too, we tend to overlook putting or removing those macros. I've also noticed that Q_UNUSED are not used to guide us with the removal no longer needed parameters. Therefore, I think it's worth adding -Wno-unused-parameter compiler option to stop the compiler producing warnings about unused parameters. It changes nothing except that we don't need to put Q_UNUSED anymore, which can be really cumbersome sometimes. Note that it doesn't affect unused variables, you'll still get a -Wunused-variable compiler warning if a variable is unused.
146 lines
2.9 KiB
C++
146 lines
2.9 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2017 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_KEYBOARD_LAYOUT_SWITCHING_H
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#define KWIN_KEYBOARD_LAYOUT_SWITCHING_H
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#include <KConfigGroup>
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#include <QHash>
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#include <QObject>
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#include <memory>
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namespace KWin
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{
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class Window;
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class KeyboardLayout;
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class Xkb;
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class VirtualDesktop;
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namespace KeyboardLayoutSwitching
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{
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class Policy : public QObject
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{
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Q_OBJECT
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public:
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~Policy() override;
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virtual QString name() const = 0;
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static std::unique_ptr<Policy> create(Xkb *xkb, KeyboardLayout *layout, const KConfigGroup &config, const QString &policy);
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protected:
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explicit Policy(Xkb *xkb, KeyboardLayout *layout, const KConfigGroup &config = KConfigGroup());
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virtual void clearCache() = 0;
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virtual void layoutChanged(uint index) = 0;
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void setLayout(uint index);
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KConfigGroup m_config;
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virtual const QString defaultLayoutEntryKey() const;
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void clearLayouts();
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static const char defaultLayoutEntryKeyPrefix[];
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Xkb *m_xkb;
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private:
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KeyboardLayout *m_layout;
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};
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class GlobalPolicy : public Policy
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{
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Q_OBJECT
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public:
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explicit GlobalPolicy(Xkb *xkb, KeyboardLayout *layout, const KConfigGroup &config);
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~GlobalPolicy() override;
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QString name() const override
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{
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return QStringLiteral("Global");
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}
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protected:
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void clearCache() override
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{
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}
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void layoutChanged(uint index) override
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{
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}
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private:
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const QString defaultLayoutEntryKey() const override;
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};
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class VirtualDesktopPolicy : public Policy
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{
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Q_OBJECT
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public:
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explicit VirtualDesktopPolicy(Xkb *xkb, KeyboardLayout *layout, const KConfigGroup &config);
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~VirtualDesktopPolicy() override;
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QString name() const override
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{
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return QStringLiteral("Desktop");
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}
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protected:
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void clearCache() override;
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void layoutChanged(uint index) override;
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private:
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void desktopChanged();
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QHash<VirtualDesktop *, quint32> m_layouts;
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};
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class WindowPolicy : public Policy
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{
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Q_OBJECT
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public:
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explicit WindowPolicy(Xkb *xkb, KeyboardLayout *layout);
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~WindowPolicy() override;
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QString name() const override
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{
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return QStringLiteral("Window");
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}
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protected:
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void clearCache() override;
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void layoutChanged(uint index) override;
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private:
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QHash<Window *, quint32> m_layouts;
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};
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class ApplicationPolicy : public Policy
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{
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Q_OBJECT
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public:
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explicit ApplicationPolicy(Xkb *xkb, KeyboardLayout *layout, const KConfigGroup &config);
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~ApplicationPolicy() override;
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QString name() const override
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{
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return QStringLiteral("WinClass");
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}
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protected:
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void clearCache() override;
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void layoutChanged(uint index) override;
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private:
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void windowActivated(Window *window);
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QHash<Window *, quint32> m_layouts;
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QHash<QString, quint32> m_layoutsRestored;
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};
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}
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}
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#endif
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