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86 lines
2.5 KiB
86 lines
2.5 KiB
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#include <QtGui>
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#include <XPDFRenderer.h>
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#include "core/UBPlatformUtils.h"
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void usage(QString progName)
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{
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qDebug() << "usage:" << progName << "pdfFile pageNumber width height outputDir [imageFormat=png]";
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qDebug() << "pdfFile is the path to the pdf file";
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qDebug() << "imageFormat must be one of " << QImageWriter::supportedImageFormats();
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}
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int main(int argc, char *argv[])
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{
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QCoreApplication app(argc, argv);
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QPixmapCache::setCacheLimit(0);
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QStringList args = app.arguments();
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qreal width, height;
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QString pdfFile;
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QString imageFormat = "png";
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QString outputDir = ".";
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int pageNumber = 1;
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qDebug() << UBPlatformUtils::applicationResourcesDirectory();
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if (args.count() >= 6 && args.count() <= 7) {
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pdfFile = args.at(1);
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pageNumber = args.at(2).toInt();
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width = args.at(3).toDouble();
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height = args.at(4).toDouble();
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outputDir = args.at(5);
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if (args.count() == 7) {
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imageFormat = args.at(6);
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}
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} else {
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usage(args.at(0));
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return 1;
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}
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QString fileName = QFileInfo(pdfFile).completeBaseName();
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if (!QImageWriter::supportedImageFormats().contains(imageFormat.toAscii())) {
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usage(args.at(0));
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return 1;
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}
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XPDFRenderer pdf(pdfFile);
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if (!pdf.isValid()) {
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qCritical() << fileName << "appears to be an invalid pdf file";
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return 1;
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}
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if (pageNumber < 1 || pageNumber > pdf.pageCount()) {
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qCritical() << fileName << "has" << pdf.pageCount() << "pages";
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return 1;
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}
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//qDebug() << "Converting" << pdfFile << "(" << pageNumber << ") into" << imageFormat;
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QImage image(width, height, QImage::Format_ARGB32);
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QPainter p(&image);
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p.setBackground(Qt::transparent);
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p.eraseRect(0, 0, width, height);
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qreal pdfWidth = pdf.pageSize(pageNumber).width();
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qreal pdfHeight = pdf.pageSize(pageNumber).height();
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qreal ratio = qMin(width / pdfWidth, height / pdfHeight);
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p.scale(ratio, ratio);
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if (width > pdfWidth) {
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p.translate((pdfWidth - (width / ratio)) / -2, 0);
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}
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if (height > pdfHeight) {
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p.translate(0, (pdfHeight - (height / ratio)) / -2);
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}
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pdf.render(&p, pageNumber);
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QString pageStr = QString("%1").arg(pageNumber, 5, 10, QChar('0'));
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QString outputPath = outputDir + "/" + fileName + pageStr + "." + imageFormat;
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bool ok = image.save(outputPath, imageFormat.toAscii().constData());
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return ok ? 0 : 1;
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}
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