kwin/effects/backgroundcontrast/contrast.h

105 lines
3.3 KiB
C
Raw Normal View History

/*
* Copyright © 2010 Fredrik Höglund <fredrik@kde.org>
* Copyright 2014 Marco Martin <mart@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; see the file COPYING. if not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef CONTRAST_H
#define CONTRAST_H
#include <kwineffects.h>
#include <kwinglplatform.h>
#include <kwinglutils.h>
#include <QVector>
#include <QVector2D>
namespace KWayland
{
namespace Server
{
class ContrastManagerInterface;
}
}
namespace KWin
{
class ContrastShader;
class ContrastEffect : public KWin::Effect
{
Q_OBJECT
public:
ContrastEffect();
~ContrastEffect();
static bool supported();
static bool enabledByDefault();
static QMatrix4x4 colorMatrix(qreal contrast, qreal intensity, qreal saturation);
void reconfigure(ReconfigureFlags flags);
void prePaintScreen(ScreenPrePaintData &data, int time);
void prePaintWindow(EffectWindow* w, WindowPrePaintData& data, int time);
void drawWindow(EffectWindow *w, int mask, QRegion region, WindowPaintData &data);
void paintEffectFrame(EffectFrame *frame, QRegion region, double opacity, double frameOpacity);
virtual bool provides(Feature feature);
int requestedEffectChainPosition() const override {
return 76;
}
public Q_SLOTS:
void slotWindowAdded(KWin::EffectWindow *w);
void slotWindowDeleted(KWin::EffectWindow *w);
void slotPropertyNotify(KWin::EffectWindow *w, long atom);
void slotScreenGeometryChanged();
private:
QRegion contrastRegion(const EffectWindow *w) const;
bool shouldContrast(const EffectWindow *w, int mask, const WindowPaintData &data) const;
void updateContrastRegion(EffectWindow *w);
void doContrast(EffectWindow *w, const QRegion &shape, const QRect &screen, const float opacity, const QMatrix4x4 &screenProjection);
void uploadRegion(QVector2D *&map, const QRegion &region);
void uploadGeometry(GLVertexBuffer *vbo, const QRegion &region);
private:
ContrastShader *shader;
long net_wm_contrast_region;
QRegion m_paintedArea; // actually painted area which is greater than m_damagedArea
QRegion m_currentContrast; // keeps track of the currently contrasted area of non-caching windows(from bottom to top)
QHash< const EffectWindow*, QMatrix4x4> m_colorMatrices;
QHash< const EffectWindow*, QMetaObject::Connection > m_contrastChangedConnections; // used only in Wayland to keep track of effect changed
KWayland::Server::ContrastManagerInterface *m_contrastManager = nullptr;
};
inline
bool ContrastEffect::provides(Effect::Feature feature)
{
if (feature == Contrast) {
return true;
}
return KWin::Effect::provides(feature);
}
} // namespace KWin
#endif