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/***************************************************************************
* *
* DrawPad - a drawing program for Opie Environment *
* *
* (C) 2002 by S. Prud'homme <prudhomme@laposte.net> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "page.h"
const int PAGE_BACKUPS = 9;
Page::Page()
{
m_title = "";
m_lastModified = QDateTime::currentDateTime();
m_pPixmap = new QPixmap();
m_backHistory.setAutoDelete(true);
m_forwardHistory.setAutoDelete(true);
}
Page::Page(QString title, int w, int h)
{
m_title = title;
m_lastModified = QDateTime::currentDateTime();
m_pPixmap = new QPixmap(w, h);
m_backHistory.setAutoDelete(true);
m_forwardHistory.setAutoDelete(true);
}
Page::Page(QString title, const QSize& size)
{
m_title = title;
m_lastModified = QDateTime::currentDateTime();
m_pPixmap = new QPixmap(size);
m_backHistory.setAutoDelete(true);
m_forwardHistory.setAutoDelete(true);
}
Page::~Page()
{
delete m_pPixmap;
}
QString Page::title() const
{
return m_title;
}
QDateTime Page::lastModified() const
{
return m_lastModified;
}
QPixmap* Page::pixmap() const
{
return m_pPixmap;
}
void Page::setTitle(QString title)
{
m_title = title;
}
void Page::setLastModified(QDateTime lastModified)
{
m_lastModified = lastModified;
}
bool Page::undoEnabled()
{
return (!m_backHistory.isEmpty());
}
bool Page::redoEnabled()
{
return (!m_forwardHistory.isEmpty());
}
void Page::backup()
{
setLastModified(QDateTime::currentDateTime());
while (m_backHistory.count() >= (PAGE_BACKUPS + 1)) {
m_backHistory.removeFirst();
}
m_backHistory.append(new QPixmap(*m_pPixmap));
m_forwardHistory.clear();
}
void Page::undo()
{
m_forwardHistory.append(new QPixmap(*m_pPixmap));
m_pPixmap = new QPixmap(*(m_backHistory.last()));
m_backHistory.removeLast();
}
void Page::redo()
{
m_backHistory.append(new QPixmap(*m_pPixmap));
m_pPixmap = new QPixmap(*(m_forwardHistory.last()));
m_forwardHistory.removeLast();
}
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