kwin/effects/invert/invert.h
Vlad Zagorodniy 8af2fa73dc Run clang-tidy with modernize-use-override check
Summary:
Currently code base of kwin can be viewed as two pieces. One is very
ancient, and the other one is more modern, which uses new C++ features.

The main problem with the ancient code is that it was written before
C++11 era. So, no override or final keywords, lambdas, etc.

Quite recently, KDE compiler settings were changed to show a warning if
a virtual method has missing override keyword. As you might have already
guessed, this fired back at us because of that ancient code. We had
about 500 new compiler warnings.

A "solution" was proposed to that problem - disable -Wno-suggest-override
and the other similar warning for clang. It's hard to call a solution
because those warnings are disabled not only for the old code, but also
for new. This is not what we want!

The main argument for not actually fixing the problem was that git
history will be screwed as well because of human factor. While good git
history is a very important thing, we should not go crazy about it and
block every change that somehow alters git history. git blame allows to
specify starting revision for a reason.

The other argument (human factor) can be easily solved by using tools
such as clang-tidy. clang-tidy is a clang-based linter for C++. It can
be used for various things, e.g. fixing coding style(e.g. add missing
braces to if statements, readability-braces-around-statements check),
or in our case add missing override keywords.

Test Plan: Compiles.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, apol, romangg, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22371
2019-07-22 20:03:22 +03:00

75 lines
1.9 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
Copyright (C) 2008 Lucas Murray <lmurray@undefinedfire.com>
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/>.
*********************************************************************/
#ifndef KWIN_INVERT_H
#define KWIN_INVERT_H
#include <kwineffects.h>
namespace KWin
{
class GLShader;
/**
* Inverts desktop's colors
**/
class InvertEffect
: public Effect
{
Q_OBJECT
public:
InvertEffect();
~InvertEffect() override;
void drawWindow(EffectWindow* w, int mask, QRegion region, WindowPaintData& data) override;
void paintEffectFrame(KWin::EffectFrame* frame, QRegion region, double opacity, double frameOpacity) override;
bool isActive() const override;
bool provides(Feature) override;
int requestedEffectChainPosition() const override;
static bool supported();
public Q_SLOTS:
void toggleScreenInversion();
void toggleWindow();
void slotWindowClosed(KWin::EffectWindow *w);
protected:
bool loadData();
private:
bool m_inited;
bool m_valid;
GLShader* m_shader;
bool m_allWindows;
QList<EffectWindow*> m_windows;
};
inline int InvertEffect::requestedEffectChainPosition() const
{
return 99;
}
} // namespace
#endif