/********************************************************************
 KWin - the KDE window manager
 This file is part of the KDE project.

Copyright (C) 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>

Since the functionality provided in this class has been moved from
class Workspace, it is not clear who exactly has written the code.
The list below contains the copyright holders of the class Workspace.

Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.com>

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_SCREENEDGE_H
#define KWIN_SCREENEDGE_H
#include <QtCore/QObject>
#include <QtCore/QVector>
#include "kwinglobals.h"


namespace KWin {

//-----------------------------------------------------------------------------
// Electric Borders
//-----------------------------------------------------------------------------
// Electric Border Window management. Electric borders allow a user to change
// the virtual desktop or activate another features by moving the mouse pointer
// to the borders or corners. Technically this is done with input only windows.
//-----------------------------------------------------------------------------
class ScreenEdge : QObject {
    Q_OBJECT
public:
    ScreenEdge();
    ~ScreenEdge();
    void checkElectricBorder(const QPoint& pos, Time now);
    void restoreElectricBorderSize(ElectricBorder border);
    void reserveElectricBorder(ElectricBorder border);
    void unreserveElectricBorder(ElectricBorder border);
    void reserveElectricBorderActions(bool reserve);
    void reserveElectricBorderSwitching(bool reserve);
    void raiseElectricBorderWindows();
    void destroyElectricBorders();
    bool electricBorderEvent(XEvent * e);
    QVector< Window* >* screenEdgeWindows();
public Q_SLOTS:
    void updateElectricBorders();
private:
    void electricBorderSwitchDesktop(ElectricBorder border, const QPoint& pos);

    ElectricBorder electric_current_border;
    Window electric_windows[ELECTRIC_COUNT];
    int electricLeft;
    int electricRight;
    int electricTop;
    int electricBottom;
    Time electric_time_first;
    Time electric_time_last;
    Time electric_time_last_trigger;
    QPoint electric_push_point;
    int electric_reserved[ELECTRIC_COUNT]; // Corners/edges used by something
};
}
#endif // KWIN_SCREENEDGE_H