File indexing completed on 2024-05-12 04:34:49

 /* ============================================================
 * Date        : 2010-07-02
 * Description : Image saver class for libksane image data.
 *
 * SPDX-FileCopyrightText: 2010-2012 Kåre Särs <kare.sars@iki .fi>
 *
 * SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 *
 * ============================================================ */
 
 #include "SkanliteImageSaver.h"
 
 #include <QMutex>
 #include <QUrl>
 #include <QImage>
 #include <QPdfWriter>
 #include <QPainter>
 
 struct SkanliteImageSaver::Private {
     bool   m_savedOk;
     QMutex m_runMutex;
 
     QUrl       m_url;
     QString    m_name;
     QImage     m_image;
     QString    m_fileFormat;
     int        m_quality;
 
     SkanliteImageSaver *q;
 
     bool saveQImage();
     bool savePDF();
 };
 
 // ------------------------------------------------------------------------
 SkanliteImageSaver::SkanliteImageSaver(QObject *parent) : QThread(parent), d(new Private)
 {
     d->q = this;
 }
 
 // ------------------------------------------------------------------------
 SkanliteImageSaver::~SkanliteImageSaver()
 {
     delete d;
 }
 
 bool SkanliteImageSaver::saveQImage(const QUrl &url, const QString &name, const QImage &image, const QString& fileFormat, int quality)
 {
     if (!d->m_runMutex.tryLock()) {
         return false;
     }
 
     d->m_url    = url;
     d->m_name   = name;
     d->m_image  = image;
     d->m_fileFormat = fileFormat;
     d->m_quality = quality;
 
     start();
     return true;
 }
 
 void SkanliteImageSaver::run()
 {
     if (d->m_fileFormat == QLatin1String("pdf")) {
         d->m_savedOk = d->savePDF();
     } else {
         d->m_savedOk = d->saveQImage();
     }
 
     Q_EMIT imageSaved(d->m_url, d->m_name, d->m_savedOk);
 
     d->m_runMutex.unlock();
 }
 
 bool SkanliteImageSaver::Private::saveQImage()
 {
     return m_image.save(m_name, qPrintable(m_fileFormat), m_quality);
 }
 
 bool SkanliteImageSaver::Private::savePDF()
 {
     const QPageSize pageSize = QPageSize(QSizeF(m_image.width() * 1000.0 / m_image.dotsPerMeterX() , m_image.height() * 1000.0 / m_image.dotsPerMeterY()), QPageSize::Millimeter);
     const int dpi = qRound(m_image.dotsPerMeterX() / 1000.0 * 25.4);
 
     QPainter painter;
     QPdfWriter writer(m_name);
     writer.setPageOrientation(QPageLayout::Portrait);
     writer.setResolution(dpi);
     writer.setPageSize(pageSize);
     writer.setPageMargins(QMarginsF(0, 0, 0, 0));
     writer.setCreator(QStringLiteral("Skanlite"));
     writer.setTitle(m_name);
 
     QRect paintArea(0, 0, writer.width(), writer.height());
     if (!painter.begin(&writer)) {
         return false;
     }
 
     painter.drawImage(paintArea, m_image);
 
     return painter.end();
 }
 
 #include "moc_SkanliteImageSaver.cpp"