barrier/lib/platform/CXWindowsScreenSaver.h
crs a1c807ba67 Added support for DPMS in X11 screen saver. DPMS is the extension
that allows you to power down the display.  Previously, synergy
would not power on the display if DPMS was enabled and activated
and xscreensaver was not running.  It also wouldn't disable DPMS
so the display would power down normally on a synergy client if
there was no input activity.
2004-03-10 22:03:01 +00:00

160 lines
4.1 KiB
C++

/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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.
*/
#ifndef CXWINDOWSSCREENSAVER_H
#define CXWINDOWSSCREENSAVER_H
#include "IScreenSaver.h"
#include "stdmap.h"
#if defined(X_DISPLAY_MISSING)
# error X11 is required to build synergy
#else
# include <X11/Xlib.h>
#endif
class CEvent;
class CEventQueueTimer;
//! X11 screen saver implementation
class CXWindowsScreenSaver : public IScreenSaver {
public:
CXWindowsScreenSaver(Display*, Window, void* eventTarget);
virtual ~CXWindowsScreenSaver();
//! @name manipulators
//@{
//! Event filtering
/*!
Should be called for each system event before event translation and
dispatch. Returns true to skip translation and dispatch.
*/
bool handleXEvent(const XEvent*);
//! Destroy without the display
/*!
Tells this object to delete itself without using the X11 display.
It may leak some resources as a result.
*/
void destroy();
//@}
// IScreenSaver overrides
virtual void enable();
virtual void disable();
virtual void activate();
virtual void deactivate();
virtual bool isActive() const;
private:
// find and set the running xscreensaver's window. returns true iff
// found.
bool findXScreenSaver();
// set the xscreensaver's window, updating the activation state flag
void setXScreenSaver(Window);
// returns true if the window appears to be the xscreensaver window
bool isXScreenSaver(Window) const;
// set xscreensaver's activation state flag. sends notification
// if the state has changed.
void setXScreenSaverActive(bool activated);
// send a command to xscreensaver
void sendXScreenSaverCommand(Atom, long = 0, long = 0);
// watch all windows that could potentially be the xscreensaver for
// the events that will confirm it.
void watchForXScreenSaver();
// stop watching all watched windows
void clearWatchForXScreenSaver();
// add window to the watch list
void addWatchXScreenSaver(Window window);
// install/uninstall the job used to suppress the screensaver
void updateDisableTimer();
// called periodically to prevent the screen saver from starting
void handleDisableTimer(const CEvent&, void*);
// force DPMS to activate or deactivate
void activateDPMS(bool activate);
// enable/disable DPMS screen saver
void enableDPMS(bool);
// check if DPMS is enabled
bool isDPMSEnabled() const;
// check if DPMS is activate
bool isDPMSActivated() const;
private:
typedef std::map<Window, long> CWatchList;
// the X display
Display* m_display;
// window to receive xscreensaver repsonses
Window m_xscreensaverSink;
// the target for the events we generate
void* m_eventTarget;
// xscreensaver's window
Window m_xscreensaver;
// xscreensaver activation state
bool m_xscreensaverActive;
// old event mask on root window
long m_rootEventMask;
// potential xscreensaver windows being watched
CWatchList m_watchWindows;
// atoms used to communicate with xscreensaver's window
Atom m_atomScreenSaver;
Atom m_atomScreenSaverVersion;
Atom m_atomScreenSaverActivate;
Atom m_atomScreenSaverDeactivate;
// built-in screen saver settings
int m_timeout;
int m_interval;
int m_preferBlanking;
int m_allowExposures;
// DPMS screen saver settings
bool m_dpms;
bool m_dpmsEnabled;
// true iff the client wants the screen saver suppressed
bool m_disabled;
// true iff we're ignoring m_disabled. this is true, for example,
// when the client has called activate() and so presumably wants
// to activate the screen saver even if disabled.
bool m_suppressDisable;
// the disable timer (NULL if not installed)
CEventQueueTimer* m_disableTimer;
};
#endif