kwin/x11eventfilter.h
Martin Gräßlin 9f976a4b8d Support multiple event types in X11EventFilter
Summary:
So far the X11EventFilter only supported one event type. But most
usecases for an X11EventFilter require to support multiple event types.
E.g. a filter listens for both key press and key release.

This change extends the internal X11EventFilter to support multiple
types and Workspace::workspaceEvent makes use of that.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D3361
2016-11-16 07:48:19 +01:00

87 lines
2.4 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2014 Fredrik Höglund <fredrik@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 X11EVENTFILTER_H
#define X11EVENTFILTER_H
#include <xcb/xcb.h>
#include <QVector>
#include <kwin_export.h>
namespace KWin
{
class KWIN_EXPORT X11EventFilter
{
public:
/**
* Creates an event filter for the given event type.
*/
X11EventFilter(int eventType, int opcode = 0, int genericEventType = 0);
X11EventFilter(int eventType, int opcode, const QVector<int> &genericEventTypes);
X11EventFilter(const QVector<int> &eventTypes);
/**
* Destroys the event filter.
*/
virtual ~X11EventFilter();
/**
* Returns the type of events to filter.
*/
QVector<int> eventTypes() const { return m_eventTypes; }
/**
* Returns the major opcode of the extension.
*
* Only used when the event type is XCB_GE_GENERIC.
*/
int extension() const { return m_extension; }
/**
* Returns the types of generic events to filter.
*
* Only used when the event type is XCB_GE_GENERIC.
*/
QVector<int> genericEventTypes() const { return m_genericEventTypes; }
/**
* This method is called for every event of the filtered type.
*
* Return true to accept the event and stop further processing, and false otherwise.
*/
virtual bool event(xcb_generic_event_t *event) = 0;
/**
* Whether the event filter is for XCB_GE_GENERIC events.
**/
bool isGenericEvent() const;
private:
QVector<int> m_eventTypes;
int m_extension;
QVector<int> m_genericEventTypes;
};
} // namespace KWin
#endif