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/*
* Copyright (C) 2008-2009, Pino Toscano <[email protected]>
* Copyright (C) 2013, Fabio D'Urso <[email protected]>
* Copyright (C) 2017, Albert Astals Cid <[email protected]>
*
* 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, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "pageview.h"
#include <poppler-qt5.h>
#include <QtWidgets/QApplication>
#include <QtWidgets/QDesktopWidget>
#include <QtGui/QImage>
#include <QtWidgets/QLabel>
#include <QtGui/QPixmap>
#include <QDebug>
PageView::PageView(QWidget *parent) : QScrollArea(parent), m_zoom(1.0), m_rotation(0), m_dpiX(QApplication::desktop()->physicalDpiX()), m_dpiY(QApplication::desktop()->physicalDpiY())
{
m_imageLabel = new QLabel(this);
m_imageLabel->resize(0, 0);
setWidget(m_imageLabel);
}
PageView::~PageView() { }
void PageView::documentLoaded() { }
void PageView::documentClosed()
{
m_imageLabel->clear();
m_imageLabel->resize(0, 0);
}
void PageView::pageChanged(int page)
{
Poppler::Page *popplerPage = document()->page(page);
if (!popplerPage) {
qDebug() << "Page" << page << "is malformed";
return;
}
const double resX = m_dpiX * m_zoom;
const double resY = m_dpiY * m_zoom;
Poppler::Page::Rotation rot;
if (m_rotation == 0) {
rot = Poppler::Page::Rotate0;
} else if (m_rotation == 90) {
rot = Poppler::Page::Rotate90;
} else if (m_rotation == 180) {
rot = Poppler::Page::Rotate180;
} else { // m_rotation == 270
rot = Poppler::Page::Rotate270;
}
QImage image = popplerPage->renderToImage(resX, resY, -1, -1, -1, -1, rot);
if (!image.isNull()) {
m_imageLabel->resize(image.size());
m_imageLabel->setPixmap(QPixmap::fromImage(image));
} else {
m_imageLabel->resize(0, 0);
m_imageLabel->setPixmap(QPixmap());
}
delete popplerPage;
}
void PageView::slotZoomChanged(qreal value)
{
m_zoom = value;
if (!document()) {
return;
}
reloadPage();
}
void PageView::slotRotationChanged(int value)
{
m_rotation = value;
if (!document()) {
return;
}
reloadPage();
}
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