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/*
* idle.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
*
*/
#include"idle.h"
#include<qcursor.h>
#include<qdatetime.h>
#include<qtimer.h>
static IdlePlatform *platform = 0;
static int platform_ref = 0;
Idle::Idle()
{
d = new Private;
d->active = false;
d->idleTime = 0;
// try to use platform idle
if(!platform) {
IdlePlatform *p = new IdlePlatform;
if(p->init())
platform = p;
else
delete p;
}
if(platform)
++platform_ref;
connect(&d->checkTimer, SIGNAL(timeout()), SLOT(doCheck()));
}
Idle::~Idle()
{
if(platform) {
--platform_ref;
if(platform_ref == 0) {
delete platform;
platform = 0;
}
}
delete d;
}
bool Idle::isActive() const
{
return d->active;
}
bool Idle::usingPlatform() const
{
return (platform ? true: false);
}
void Idle::start()
{
d->startTime = QDateTime::currentDateTime();
if(!platform) {
// generic idle
d->lastMousePos = QCursor::pos();
d->idleSince = QDateTime::currentDateTime();
}
// poll every second (use a lower value if you need more accuracy)
d->checkTimer.start(1000);
}
void Idle::stop()
{
d->checkTimer.stop();
}
int Idle::secondsIdle()
{
int i;
if(platform)
i = platform->secondsIdle();
else {
QPoint curMousePos = QCursor::pos();
QDateTime curDateTime = QDateTime::currentDateTime();
if(d->lastMousePos != curMousePos) {
d->lastMousePos = curMousePos;
d->idleSince = curDateTime;
}
i = d->idleSince.secsTo(curDateTime);
}
// set 'beginIdle' to the beginning of the idle time (by backtracking 'i' seconds from now)
QDateTime beginIdle = QDateTime::currentDateTime().addSecs(-i);
// set 't' to hold the number of seconds between 'beginIdle' and 'startTime'
int t = beginIdle.secsTo(d->startTime);
// beginIdle later than (or equal to) startTime?
if(t <= 0) {
// scoot ourselves up to the new idle start
d->startTime = beginIdle;
}
// beginIdle earlier than startTime?
else if(t > 0) {
// do nothing
}
// how long have we been idle?
int idleTime = d->startTime.secsTo(QDateTime::currentDateTime());
return idleTime;
}
void Idle::doCheck()
{
secondsIdle(secondsIdle());
}
#include "idle.moc"
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