kwin/wayland_backend.h

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2013 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_WAYLAND_BACKEND_H
#define KWIN_WAYLAND_BACKEND_H
// Qt
#include <QHash>
#include <QObject>
#include <QPoint>
#include <QSize>
// wayland
#include <wayland-client.h>
class QTemporaryFile;
class QImage;
struct wl_buffer;
struct wl_shm;
namespace KWin
{
namespace Wayland
{
class ShmPool;
class WaylandBackend;
class CursorData
{
public:
CursorData(ShmPool *pool);
~CursorData();
bool isValid() const;
const QPoint &hotSpot() const;
const QSize &size() const;
wl_buffer *cursor() const;
private:
bool init(ShmPool *pool);
wl_buffer *m_cursor;
QPoint m_hotSpot;
QSize m_size;
bool m_valid;
};
class X11CursorTracker : public QObject
{
Q_OBJECT
public:
explicit X11CursorTracker(wl_pointer *pointer, WaylandBackend *backend, QObject* parent = 0);
virtual ~X11CursorTracker();
void setEnteredSerial(uint32_t serial);
void resetCursor();
private Q_SLOTS:
void cursorChanged(uint32_t serial);
private:
void installCursor(const CursorData &cursor);
wl_pointer *m_pointer;
QHash<uint32_t, CursorData> m_cursors;
WaylandBackend *m_backend;
wl_surface *m_cursor;
uint32_t m_enteredSerial;
uint32_t m_installedCursor;
uint32_t m_lastX11Cursor;
};
class ShmPool
{
public:
ShmPool(wl_shm *shm);
~ShmPool();
bool isValid() const;
wl_buffer *createBuffer(const QImage &image);
private:
bool createPool();
wl_shm *m_shm;
wl_shm_pool *m_pool;
void *m_poolData;
size_t m_size;
QScopedPointer<QTemporaryFile> m_tmpFile;
bool m_valid;
int m_offset;
};
class WaylandSeat
{
public:
WaylandSeat(wl_seat *seat, WaylandBackend *backend);
virtual ~WaylandSeat();
void changed(uint32_t capabilities);
wl_seat *seat();
void pointerEntered(uint32_t serial);
void resetCursor();
private:
void destroyPointer();
void destroyKeyboard();
wl_seat *m_seat;
wl_pointer *m_pointer;
wl_keyboard *m_keyboard;
QScopedPointer<X11CursorTracker> m_cursorTracker;
WaylandBackend *m_backend;
};
/**
* @brief Class encapsulating all Wayland data structures needed by the Egl backend.
*
* It creates the connection to the Wayland Compositor, set's up the registry and creates
* the Wayland surface and it's shell mapping.
*/
class WaylandBackend : public QObject
{
Q_OBJECT
public:
WaylandBackend();
virtual ~WaylandBackend();
wl_display *display();
wl_registry *registry();
void setCompositor(wl_compositor *c);
wl_compositor *compositor();
void setShell(wl_shell *s);
wl_shell *shell();
ShmPool *shmPool();
void createSeat(uint32_t name);
void createShm(uint32_t name);
void ping(uint32_t serial);
wl_surface *surface() const;
const QSize &shellSurfaceSize() const;
void setShellSurfaceSize(const QSize &size);
void dispatchEvents();
Q_SIGNALS:
void shellSurfaceSizeChanged(const QSize &size);
private Q_SLOTS:
void readEvents();
private:
void createSurface();
wl_display *m_display;
wl_registry *m_registry;
wl_compositor *m_compositor;
wl_shell *m_shell;
wl_surface *m_surface;
wl_shell_surface *m_shellSurface;
QSize m_shellSurfaceSize;
QScopedPointer<WaylandSeat> m_seat;
QScopedPointer<ShmPool> m_shm;
};
inline
bool CursorData::isValid() const
{
return m_valid;
}
inline
const QPoint& CursorData::hotSpot() const
{
return m_hotSpot;
}
inline
wl_buffer* CursorData::cursor() const
{
return m_cursor;
}
inline
const QSize& CursorData::size() const
{
return m_size;
}
inline
wl_seat *WaylandSeat::seat()
{
return m_seat;
}
inline
bool ShmPool::isValid() const
{
return m_valid;
}
inline
wl_display *WaylandBackend::display()
{
return m_display;
}
inline
wl_registry *WaylandBackend::registry()
{
return m_registry;
}
inline
void WaylandBackend::setCompositor(wl_compositor *c)
{
m_compositor = c;
}
inline
wl_compositor *WaylandBackend::compositor()
{
return m_compositor;
}
inline
wl_shell *WaylandBackend::shell()
{
return m_shell;
}
inline
ShmPool* WaylandBackend::shmPool()
{
return m_shm.data();
}
inline
wl_surface *WaylandBackend::surface() const
{
return m_surface;
}
inline
const QSize &WaylandBackend::shellSurfaceSize() const
{
return m_shellSurfaceSize;
}
} // namespace Wayland
} // namespace KWin
#endif // KWIN_WAYLAND_BACKEND_H