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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef MOZ_X11
#include "mozilla/X11Util.h"
#endif
#include "nsIdleServiceQt.h"
#include "nsIServiceManager.h"
#include "nsDebug.h"
#include "prlink.h"
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
int* error_base);
typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
XScreenSaverInfo *info);
static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr;
static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr;
static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr;
#endif
static bool sInitialized = false;
NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceQt, nsIdleService)
nsIdleServiceQt::nsIdleServiceQt()
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
: mXssInfo(nullptr)
#endif
{
}
static void Initialize()
{
sInitialized = true;
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
// This will leak - See comments in ~nsIdleServiceQt().
PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
if (!xsslib) {
return;
}
_XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
_XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
_XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
#endif
}
nsIdleServiceQt::~nsIdleServiceQt()
{
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
if (mXssInfo)
XFree(mXssInfo);
// It is not safe to unload libXScrnSaver until each display is closed because
// the library registers callbacks through XESetCloseDisplay (Bug 397607).
// (Also the library and its functions are scoped for the file not the object.)
#if 0
if (xsslib) {
PR_UnloadLibrary(xsslib);
xsslib = nullptr;
}
#endif
#endif
}
bool
nsIdleServiceQt::PollIdleTime(uint32_t *aIdleTime)
{
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
// Ask xscreensaver about idle time:
*aIdleTime = 0;
// We might not have a display (cf. in xpcshell)
Display *dplay = mozilla::DefaultXDisplay();
if (!dplay) {
return false;
}
if (!sInitialized) {
Initialize();
}
if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
return false;
}
int event_base, error_base;
if (_XSSQueryExtension(dplay, &event_base, &error_base)) {
if (!mXssInfo)
mXssInfo = _XSSAllocInfo();
if (!mXssInfo)
return false;
_XSSQueryInfo(dplay, RootWindowOfScreen(DefaultScreenOfDisplay(mozilla::DefaultXDisplay())), mXssInfo);
*aIdleTime = mXssInfo->idle;
return true;
}
#endif
return false;
}
bool
nsIdleServiceQt::UsePollMode()
{
#if !defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11)
return false;
#endif
return true;
}
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