Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "autosaver.h"
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#include <QtCore/QDir>
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#include <QtCore/QCoreApplication>
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#include <QtCore/QMetaObject>
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#include <QtDebug>
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#define AUTOSAVE_IN 1000 * 3 // seconds
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#define MAXWAIT 1000 * 15 // seconds
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AutoSaver::AutoSaver(QObject *parent) : QObject(parent)
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{
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Q_ASSERT(parent);
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}
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AutoSaver::~AutoSaver()
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{
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if (m_timer.isActive())
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qWarning() << "AutoSaver: still active when destroyed, changes not saved.";
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}
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void AutoSaver::changeOccurred()
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{
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if (m_firstChange.isNull())
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m_firstChange.start();
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if (m_firstChange.elapsed() > MAXWAIT) {
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saveIfNeccessary();
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} else {
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m_timer.start(AUTOSAVE_IN, this);
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}
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}
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void AutoSaver::timerEvent(QTimerEvent *event)
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{
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if (event->timerId() == m_timer.timerId()) {
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saveIfNeccessary();
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} else {
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QObject::timerEvent(event);
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}
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}
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void AutoSaver::saveIfNeccessary()
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{
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if (!m_timer.isActive())
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return;
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m_timer.stop();
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m_firstChange = QTime();
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if (!QMetaObject::invokeMethod(parent(), "save", Qt::DirectConnection)) {
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qWarning() << "AutoSaver: error invoking slot save() on parent";
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}
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}
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