107 lines
3.2 KiB
C++
107 lines
3.2 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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Copyright (C) 2012 Casian Andrei <skeletk13@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_COLOR_CORRECTION_H
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#define KWIN_COLOR_CORRECTION_H
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#include "kwinglobals.h"
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#include <QObject>
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namespace KWin {
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class ColorCorrectionPrivate;
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/**
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* Implements a color correction mechanism. The settings are obtained
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* asynchronously via D-Bus from kolor-server, which is part of kolor-manager.
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*
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* If it fails to get the settings, nothing should happen (no correction), even
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* if it is set to enabled.
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*
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* Supports per-output and per-region correction (window region).
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*
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* \warning This class is not designed to be used by effects, however
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* it may happen to be useful their case somehow.
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*/
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class KWIN_EXPORT ColorCorrection : public QObject
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{
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Q_OBJECT
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public:
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explicit ColorCorrection(QObject *parent = 0);
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virtual ~ColorCorrection();
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/**
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* Prepares color correction for the output number \param screen.
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* Sets up the appropriate color lookup texture for the output.
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*/
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void setupForOutput(int screen);
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/**
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* Unsets color correction by using a dummy color lookup texture. This
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* does not disable anything, the CC mechanisms remain in place. Instead, it
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* indicates to draw normally.
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*/
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void reset();
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/**
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* Modifies \param sourceCode, making it suitable for performing
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* color correction. This is done by inserting a 3d texture lookup operation
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* just before the output fragment color is returned.
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*/
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static QByteArray prepareFragmentShader(const QByteArray &sourceCode);
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/**
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* @return whether color correction is enabled
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*/
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bool isEnabled() const;
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public Q_SLOTS:
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/**
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* Enables or disables color correction. Compositing should be restarted
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* for changes to take effect.
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*
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* @return true when successful
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*/
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bool setEnabled(bool enabled);
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Q_SIGNALS:
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/**
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* Emitted when some changes happened to the color correction settings, and
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* a full repaint of the scene should be done to make the new settings visible.
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*/
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void changed();
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/**
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* Emitted when something failed because of an error (probably a GL error)
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* The description of the error should be found in the logs.
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*/
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void errorOccured();
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private:
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ColorCorrectionPrivate * const d_ptr;
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Q_DECLARE_PRIVATE(ColorCorrection)
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};
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} // KWin namespace
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#endif // KWIN_COLOR_CORRECTION_H
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