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

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2022-04-04
  * Description : WEBP image export settings widget.
  *
  * SPDX-FileCopyrightText: 2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "dimgwebpexportsettings.h"
 
 // Qt includes
 
 #include <QString>
 #include <QLabel>
 #include <QCheckBox>
 #include <QLayout>
 #include <QGridLayout>
 #include <QApplication>
 #include <QStyle>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 
 // Local includes
 
 #include "dnuminput.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN DImgWEBPExportSettings::Private
 {
 
 public:
 
     explicit Private()
       : WEBPGrid            (nullptr),
         labelWEBPcompression(nullptr),
         WEBPLossLess        (nullptr),
         WEBPcompression     (nullptr)
     {
     }
 
     QGridLayout*  WEBPGrid;
 
     QLabel*       labelWEBPcompression;
 
     QCheckBox*    WEBPLossLess;
 
     DIntNumInput* WEBPcompression;
 };
 
 DImgWEBPExportSettings::DImgWEBPExportSettings(QWidget* const parent)
     : DImgLoaderSettings(parent),
       d                 (new Private)
 {
     const int spacing = qMin(QApplication::style()->pixelMetric(QStyle::PM_LayoutHorizontalSpacing),
                              QApplication::style()->pixelMetric(QStyle::PM_LayoutVerticalSpacing));
 
     d->WEBPGrid     = new QGridLayout(this);
     d->WEBPLossLess = new QCheckBox(i18n("Lossless WEBP files"), this);
 
     d->WEBPLossLess->setWhatsThis(i18n("<p>Toggle lossless compression for WEBP images.</p>"
                                        "<p>If this option is enabled, a lossless method will be used "
                                        "to compress WEBP pictures.</p>"));
 
     d->WEBPcompression = new DIntNumInput(this);
     d->WEBPcompression->setDefaultValue(75);
     d->WEBPcompression->setRange(1, 99, 1);
     d->labelWEBPcompression = new QLabel(i18n("WEBP quality:"), this);
 
     d->WEBPcompression->setWhatsThis(i18n("<p>The quality value for WEB images:</p>"
                                           "<p><b>1</b>: low quality (high compression and small "
                                           "file size)<br/>"
                                           "<b>50</b>: medium quality<br/>"
                                           "<b>75</b>: good quality (default)<br/>"
                                           "<b>99</b>: high quality (no compression and "
                                           "large file size)</p>"
                                           "<p><b>Note: WEBP is not a lossless image "
                                           "compression format when you use this setting.</b></p>"));
 
     d->WEBPGrid->addWidget(d->WEBPLossLess,         0, 0, 1, 2);
     d->WEBPGrid->addWidget(d->labelWEBPcompression, 1, 0, 1, 2);
     d->WEBPGrid->addWidget(d->WEBPcompression,      2, 0, 1, 2);
     d->WEBPGrid->setColumnStretch(1, 10);
     d->WEBPGrid->setRowStretch(3, 10);
     d->WEBPGrid->setContentsMargins(spacing, spacing, spacing, spacing);
     d->WEBPGrid->setSpacing(spacing);
 
     connect(d->WEBPLossLess, SIGNAL(toggled(bool)),
             this, SLOT(slotToggleWEBPLossLess(bool)));
 
     connect(d->WEBPLossLess, SIGNAL(toggled(bool)),
             this, SIGNAL(signalSettingsChanged()));
 
     connect(d->WEBPcompression, SIGNAL(valueChanged(int)),
             this, SIGNAL(signalSettingsChanged()));
 }
 
 DImgWEBPExportSettings::~DImgWEBPExportSettings()
 {
     delete d;
 }
 
 void DImgWEBPExportSettings::setSettings(const DImgLoaderPrms& set)
 {
     for (DImgLoaderPrms::const_iterator it = set.constBegin() ; it != set.constEnd() ; ++it)
     {
         if      (it.key() == QLatin1String("quality"))
         {
             d->WEBPcompression->setValue(it.value().toInt());
         }
         else if (it.key() == QLatin1String("lossless"))
         {
             d->WEBPLossLess->setChecked(it.value().toBool());
         }
     }
 
     slotToggleWEBPLossLess(d->WEBPLossLess->isChecked());
 }
 
 DImgLoaderPrms DImgWEBPExportSettings::settings() const
 {
     DImgLoaderPrms set;
 
     // NOTE: if quality = 100 --> lossless compression.
 
     set.insert(QLatin1String("quality"),  d->WEBPLossLess->isChecked() ? 100 : d->WEBPcompression->value());
     set.insert(QLatin1String("lossless"), d->WEBPLossLess->isChecked());
 
     return set;
 }
 
 void DImgWEBPExportSettings::slotToggleWEBPLossLess(bool b)
 {
     d->WEBPcompression->setEnabled(!b);
     d->labelWEBPcompression->setEnabled(!b);
 }
 
 } // namespace Digikam
 
 #include "moc_dimgwebpexportsettings.cpp"