File indexing completed on 2025-01-19 03:51:02

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2007-08-02
  * Description : PNG image export settings widget.
  *
  * SPDX-FileCopyrightText: 2007-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "dimgpngexportsettings.h"
 
 // Qt includes
 
 #include <QApplication>
 #include <QStyle>
 #include <QString>
 #include <QLabel>
 #include <QLayout>
 #include <QGridLayout>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 
 // Local includes
 
 #include "dnuminput.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN DImgPNGExportSettings::Private
 {
 
 public:
 
     explicit Private()
       : PNGGrid            (nullptr),
         labelPNGcompression(nullptr),
         PNGcompression     (nullptr)
     {
     }
 
     QGridLayout*  PNGGrid;
 
     QLabel*       labelPNGcompression;
 
     DIntNumInput* PNGcompression;
 };
 
 DImgPNGExportSettings::DImgPNGExportSettings(QWidget* parent)
     : DImgLoaderSettings(parent),
       d                 (new Private)
 {
     const int spacing = qMin(QApplication::style()->pixelMetric(QStyle::PM_LayoutHorizontalSpacing),
                              QApplication::style()->pixelMetric(QStyle::PM_LayoutVerticalSpacing));
 
     d->PNGGrid        = new QGridLayout(this);
     d->PNGcompression = new DIntNumInput(this);
     d->PNGcompression->setDefaultValue(6);
     d->PNGcompression->setRange(1, 9, 1);
     d->labelPNGcompression = new QLabel(i18n("PNG compression:"), this);
 
     d->PNGcompression->setWhatsThis(i18n("<p>The compression value for PNG images:</p>"
                                          "<p><b>1</b>: low compression (large file size but "
                                          "short compression duration - default)<br/>"
                                          "<b>5</b>: medium compression<br/>"
                                          "<b>9</b>: high compression (small file size but "
                                          "long compression duration)</p>"
                                          "<p><b>Note: PNG is always a lossless image "
                                          "compression format.</b></p>"));
 
     d->PNGGrid->addWidget(d->labelPNGcompression, 0, 0, 1, 2);
     d->PNGGrid->addWidget(d->PNGcompression,      1, 1, 1, 2);
     d->PNGGrid->setColumnStretch(1, 10);
     d->PNGGrid->setRowStretch(2, 10);
     d->PNGGrid->setContentsMargins(spacing, spacing, spacing, spacing);
     d->PNGGrid->setSpacing(spacing);
 
     connect(d->PNGcompression, SIGNAL(valueChanged(int)),
             this, SIGNAL(signalSettingsChanged()));
 }
 
 DImgPNGExportSettings::~DImgPNGExportSettings()
 {
     delete d;
 }
 
 void DImgPNGExportSettings::setSettings(const DImgLoaderPrms& set)
 {
     for (DImgLoaderPrms::const_iterator it = set.constBegin() ; it != set.constEnd() ; ++it)
     {
         if (it.key() == QLatin1String("quality"))
         {
             d->PNGcompression->setValue(it.value().toInt());
         }
     }
 }
 
 DImgLoaderPrms DImgPNGExportSettings::settings() const
 {
     DImgLoaderPrms set;
     set.insert(QLatin1String("quality"),  d->PNGcompression->value());
 
     return set;
 }
 
 } // namespace Digikam
 
 #include "moc_dimgpngexportsettings.cpp"