/*
 * Copyright (c) 2007      Gustavo Pichorim Boiko <gustavo.boiko@kdemail.net>
 * Copyright (c) 2002,2003 Hamish Rodda <rodda@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, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifndef __RANDRDISPLAY_H__
#define __RANDRDISPLAY_H__

#include <QWidget>
#include <KConfig>
#include "randr.h"

#include <X11/Xlib.h>

class RandRDisplay
{
public:
	RandRDisplay();
	~RandRDisplay();

	bool isValid() const;
	const QString& errorCode() const;
	const QString& version() const;

	int eventBase() const;
	int errorBase() const;

	int screenIndexOfWidget(QWidget* widget);

	int numScreens() const;
	LegacyRandRScreen* legacyScreen(int index);
	LegacyRandRScreen* currentLegacyScreen();
#ifdef HAS_RANDR_1_2
	RandRScreen* screen(int index);
	RandRScreen* currentScreen();
#endif
	void setCurrentScreen(int index);
	int	currentScreenIndex() const;

	bool needsRefresh() const;
	void refresh();

	/**
	 * Loads saved settings.
	 *
	 * @param config the KConfig object to load from
	 * @param loadScreens whether to call LegacyRandRScreen::load() for each screen
	 * @retuns true if the settings should be applied on KDE startup.
	 */
	bool loadDisplay(KConfig& config, bool loadScreens = true);
	void saveDisplay(KConfig& config, bool applyOnStartup, bool syncTrayApp);

	static bool applyOnStartup(KConfig& config);
	static bool syncTrayApp(KConfig& config);

	void applyProposed(bool confirm = true);

	bool canHandle(const XEvent *e) const;
	void handleEvent(XEvent *e);

private:
	Display *m_dpy;
	int	m_numScreens;
	int	m_currentScreenIndex;
	LegacyScreenList m_legacyScreens;
#ifdef HAS_RANDR_1_2
	ScreenList m_screens;
#endif

	bool m_valid;
	QString	m_errorCode;
	QString	m_version;

	int	m_eventBase;
	int m_errorBase;
};

#endif
