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/*
* Idle_win.cpp - detect desktop idle time
* Copyright (C) 2003 Justin Karneges
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#if defined(COMPILE_ON_WINDOWS) || defined(COMPILE_ON_MINGW)
#include "Idle.h"
#include <QLibrary>
struct LASTINPUTINFO
{
UINT cbSize;
DWORD dwTime;
};
using PLASTINPUTINFO = LASTINPUTINFO *;
class IdlePlatform::Private
{
public:
Private()
{
GetLastInputInfo = 0;
IdleUIGetLastInputTime = 0;
lib = 0;
}
BOOL(__stdcall * GetLastInputInfo)
(PLASTINPUTINFO);
DWORD(__stdcall * IdleUIGetLastInputTime)
(void);
QLibrary * lib;
};
IdlePlatform::IdlePlatform()
{
d = new Private;
}
IdlePlatform::~IdlePlatform()
{
delete d->lib;
delete d;
}
bool IdlePlatform::init()
{
if(d->lib)
return true;
void * p;
// try to find the built-in Windows 2000 function
d->lib = new QLibrary("user32");
if(d->lib->load() && (p = d->lib->resolve("GetLastInputInfo")))
{
d->GetLastInputInfo = (BOOL(__stdcall *)(PLASTINPUTINFO))p;
return true;
}
else
{
delete d->lib;
d->lib = 0;
}
// fall back on idleui
d->lib = new QLibrary("idleui");
if(d->lib->load() && (p = d->lib->resolve("IdleUIGetLastInputTime")))
{
d->IdleUIGetLastInputTime = (DWORD(__stdcall *)(void))p;
return true;
}
else
{
delete d->lib;
d->lib = 0;
}
return false;
}
int IdlePlatform::secondsIdle()
{
int i;
if(d->GetLastInputInfo)
{
LASTINPUTINFO li;
li.cbSize = sizeof(LASTINPUTINFO);
bool ok = d->GetLastInputInfo(&li);
if(!ok)
return 0;
i = li.dwTime;
}
else if(d->IdleUIGetLastInputTime)
{
i = d->IdleUIGetLastInputTime();
}
else
return 0;
return (GetTickCount() - i) / 1000;
}
#endif
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