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/*
* Copyright (C) 2012 Webdoc SA
*
* This file is part of Open-Sankoré.
*
* Open-Sankoré is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation, version 2,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* Open-Sankoré 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with Open-Sankoré; if not, see
* <http://www.gnu.org/licenses/>.
*/
#include <QtGui>
#include <XPDFRenderer.h>
#include "core/UBPlatformUtils.h"
void usage(QString progName)
{
qDebug() << "usage:" << progName << "pdfFile pageNumber width height outputDir [imageFormat=png]";
qDebug() << "pdfFile is the path to the pdf file";
qDebug() << "imageFormat must be one of " << QImageWriter::supportedImageFormats();
}
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QPixmapCache::setCacheLimit(0);
QStringList args = app.arguments();
qreal width, height;
QString pdfFile;
QString imageFormat = "png";
QString outputDir = ".";
int pageNumber = 1;
qDebug() << UBPlatformUtils::applicationResourcesDirectory();
if (args.count() >= 6 && args.count() <= 7) {
pdfFile = args.at(1);
pageNumber = args.at(2).toInt();
width = args.at(3).toDouble();
height = args.at(4).toDouble();
outputDir = args.at(5);
if (args.count() == 7) {
imageFormat = args.at(6);
}
} else {
usage(args.at(0));
return 1;
}
QString fileName = QFileInfo(pdfFile).completeBaseName();
if (!QImageWriter::supportedImageFormats().contains(imageFormat.toAscii())) {
usage(args.at(0));
return 1;
}
XPDFRenderer pdf(pdfFile);
if (!pdf.isValid()) {
qCritical() << fileName << "appears to be an invalid pdf file";
return 1;
}
if (pageNumber < 1 || pageNumber > pdf.pageCount()) {
qCritical() << fileName << "has" << pdf.pageCount() << "pages";
return 1;
}
//qDebug() << "Converting" << pdfFile << "(" << pageNumber << ") into" << imageFormat;
QImage image(width, height, QImage::Format_ARGB32);
QPainter p(&image);
p.setBackground(Qt::transparent);
p.eraseRect(0, 0, width, height);
qreal pdfWidth = pdf.pageSize(pageNumber).width();
qreal pdfHeight = pdf.pageSize(pageNumber).height();
qreal ratio = qMin(width / pdfWidth, height / pdfHeight);
p.scale(ratio, ratio);
if (width > pdfWidth) {
p.translate((pdfWidth - (width / ratio)) / -2, 0);
}
if (height > pdfHeight) {
p.translate(0, (pdfHeight - (height / ratio)) / -2);
}
pdf.render(&p, pageNumber);
QString pageStr = QString("%1").arg(pageNumber, 5, 10, QChar('0'));
QString outputPath = outputDir + "/" + fileName + pageStr + "." + imageFormat;
bool ok = image.save(outputPath, imageFormat.toAscii().constData());
return ok ? 0 : 1;
}