kwin/decorations/decorationrenderer.h

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2014 Martin Gräßlin <mgraesslin@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. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#ifndef KWIN_DECORATION_RENDERER_H
#define KWIN_DECORATION_RENDERER_H
#include <QObject>
#include <QRegion>
#include <xcb/xcb.h>
class QTimer;
namespace KWin
{
class Deleted;
namespace Decoration
{
class DecoratedClientImpl;
class Renderer : public QObject
{
Q_OBJECT
public:
virtual ~Renderer();
void schedule(const QRect &rect);
/**
* Reparents this Renderer to the @p deleted.
* After this call the Renderer is no longer able to render
* anything, client() returns a nullptr.
**/
virtual void reparent(Deleted *deleted);
Q_SIGNALS:
void renderScheduled(const QRect &geo);
protected:
explicit Renderer(DecoratedClientImpl *client);
/**
* @returns the scheduled paint region and resets
**/
QRegion getScheduled();
virtual void render() = 0;
DecoratedClientImpl *client() {
return m_client;
}
bool areImageSizesDirty() const {
return m_imageSizesDirty;
}
void resetImageSizesDirty() {
m_imageSizesDirty = false;
}
QImage renderToImage(const QRect &geo);
private:
DecoratedClientImpl *m_client;
QRegion m_scheduled;
bool m_imageSizesDirty;
};
class X11Renderer : public Renderer
{
Q_OBJECT
public:
explicit X11Renderer(DecoratedClientImpl *client);
virtual ~X11Renderer();
void reparent(Deleted *deleted) override;
protected:
void render() override;
private:
QTimer *m_scheduleTimer;
xcb_gcontext_t m_gc;
};
}
}
#endif