2b185fa7e0
Getting the cursor image from the cursor theme is unfortunately not straight forward. We have three different libraries and all have drawbacks: * XCursor - we just kicked it out * xcb-util/cursor - only provides xcb_cursor_t, so a dependency on X * wayland-cursor - only a client side API The picked solution is using wayland-cursor. It provides the cursor in a wl_buffer. Unfortunately the client side API does not easily allow to a) read it back b) init without a wl_shm_pool Thus we need to work this around: * create an internal connection * get a ShmPool on it * init WaylandCursorTheme with this ShmPool * get the cursor wl_buffer from the theme * trigger a roundtrip * get the corresponding BufferInterface for the buffer * set the content as the software cursor
81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2015 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_ABSTRACT_BACKEND_H
|
|
#define KWIN_ABSTRACT_BACKEND_H
|
|
#include <kwin_export.h>
|
|
#include <QImage>
|
|
#include <QObject>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class OpenGLBackend;
|
|
class QPainterBackend;
|
|
class Screens;
|
|
|
|
namespace Wayland
|
|
{
|
|
class WaylandCursorTheme;
|
|
}
|
|
|
|
class KWIN_EXPORT AbstractBackend : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
virtual ~AbstractBackend();
|
|
|
|
virtual void installCursorFromServer();
|
|
virtual void installCursorImage(Qt::CursorShape shape);
|
|
virtual Screens *createScreens(QObject *parent = nullptr);
|
|
virtual OpenGLBackend *createOpenGLBackend();
|
|
virtual QPainterBackend *createQPainterBackend();
|
|
|
|
bool usesSoftwareCursor() const {
|
|
return m_softWareCursor;
|
|
}
|
|
QImage softwareCursor() const {
|
|
return m_cursor.image;
|
|
}
|
|
QPoint softwareCursorHotspot() const {
|
|
return m_cursor.hotspot;
|
|
}
|
|
void markCursorAsRendered();
|
|
|
|
protected:
|
|
explicit AbstractBackend(QObject *parent = nullptr);
|
|
void setSoftWareCursor(bool set);
|
|
|
|
private Q_SLOTS:
|
|
void installThemeCursor(quint32 id, const QPoint &hotspot);
|
|
|
|
private:
|
|
void triggerCursorRepaint();
|
|
bool m_softWareCursor = false;
|
|
struct {
|
|
QPoint hotspot;
|
|
QImage image;
|
|
QPoint lastRenderedPosition;
|
|
} m_cursor;
|
|
Wayland::WaylandCursorTheme *m_cursorTheme = nullptr;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|