File indexing completed on 2025-01-05 03:51:42

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2009-08-09
  * Description : a tool to enhance image with local contrasts (as human eye does).
  *
  * SPDX-FileCopyrightText: 2009      by Julien Pontabry <julien dot pontabry at gmail dot com>
  * SPDX-FileCopyrightText: 2009-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "localcontrasttool.h"
 
 // Qt includes
 
 #include <QCheckBox>
 #include <QFile>
 #include <QGridLayout>
 #include <QImage>
 #include <QLabel>
 #include <QString>
 #include <QTextStream>
 #include <QIcon>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 #include <ksharedconfig.h>
 #include <kconfiggroup.h>
 
 // Local includes
 
 #include "dimg.h"
 #include "editortoolsettings.h"
 #include "imageiface.h"
 #include "histogramwidget.h"
 #include "imageregionwidget.h"
 #include "localcontrastfilter.h"
 #include "localcontrastsettings.h"
 #include "localcontrastcontainer.h"
 
 namespace DigikamEditorLocalContrastToolPlugin
 {
 
 class Q_DECL_HIDDEN LocalContrastTool::Private
 {
 public:
 
     explicit Private()
       : settingsView (nullptr),
         previewWidget(nullptr),
         gboxSettings (nullptr)
     {
     }
 
     static const QString   configGroupName;
     static const QString   configHistogramChannelEntry;
     static const QString   configHistogramScaleEntry;
 
     LocalContrastSettings* settingsView;
     ImageRegionWidget*     previewWidget;
     EditorToolSettings*    gboxSettings;
 };
 
 const QString LocalContrastTool::Private::configGroupName(QLatin1String("localcontrast Tool"));
 const QString LocalContrastTool::Private::configHistogramChannelEntry(QLatin1String("Histogram Channel"));
 const QString LocalContrastTool::Private::configHistogramScaleEntry(QLatin1String("Histogram Scale"));
 
 // --------------------------------------------------------
 
 LocalContrastTool::LocalContrastTool(QObject* const parent)
     : EditorToolThreaded(parent),
       d                 (new Private)
 {
     setObjectName(QLatin1String("localcontrast"));
 
     d->previewWidget = new ImageRegionWidget;
     setToolView(d->previewWidget);
     setPreviewModeMask(PreviewToolBar::AllPreviewModes);
 
     // -------------------------------------------------------------
 
     d->gboxSettings = new EditorToolSettings(nullptr);
     d->gboxSettings->setTools(EditorToolSettings::Histogram);
     d->gboxSettings->setHistogramType(LRGBC);
     d->gboxSettings->setButtons(EditorToolSettings::Default|
                                 EditorToolSettings::Ok|
                                 EditorToolSettings::Cancel|
                                 EditorToolSettings::Load|
                                 EditorToolSettings::SaveAs|
                                 EditorToolSettings::Try);
 
     // -------------------------------------------------------------
 
     d->settingsView = new LocalContrastSettings(d->gboxSettings->plainPage());
     setToolSettings(d->gboxSettings);
 }
 
 LocalContrastTool::~LocalContrastTool()
 {
     delete d;
 }
 
 void LocalContrastTool::readSettings()
 {
     KSharedConfig::Ptr config = KSharedConfig::openConfig();
     KConfigGroup group        = config->group(d->configGroupName);
 
     d->gboxSettings->histogramBox()->setChannel((ChannelType)group.readEntry(d->configHistogramChannelEntry, (int)LuminosityChannel));
     d->gboxSettings->histogramBox()->setScale((HistogramScale)group.readEntry(d->configHistogramScaleEntry,  (int)LogScaleHistogram));
     d->settingsView->readSettings(group);
 }
 
 void LocalContrastTool::writeSettings()
 {
     KSharedConfig::Ptr config = KSharedConfig::openConfig();
     KConfigGroup group        = config->group(d->configGroupName);
 
     group.writeEntry(d->configHistogramChannelEntry, (int)d->gboxSettings->histogramBox()->channel());
     group.writeEntry(d->configHistogramScaleEntry,   (int)d->gboxSettings->histogramBox()->scale());
     d->settingsView->writeSettings(group);
     group.sync();
 }
 
 void LocalContrastTool::slotResetSettings()
 {
     d->settingsView->resetToDefault();
 }
 
 void LocalContrastTool::preparePreview()
 {
     // See bug #235601 : we cannot use downscaled image to render preview. It will differs than final rendering.
     DImg image = d->previewWidget->getOriginalRegionImage(false);
     setFilter(new LocalContrastFilter(&image, this, d->settingsView->settings()));
 }
 
 void LocalContrastTool::prepareFinal()
 {
     ImageIface iface;
     setFilter(new LocalContrastFilter(iface.original(), this, d->settingsView->settings()));
 }
 
 void LocalContrastTool::setPreviewImage()
 {
     DImg preview = filter()->getTargetImage();
     d->previewWidget->setPreviewImage(preview);
 
     // Update histogram.
 
     d->gboxSettings->histogramBox()->histogram()->updateData(preview.copy(), DImg(), false);
 }
 
 void LocalContrastTool::setFinalImage()
 {
     ImageIface iface;
     iface.setOriginal(i18n("Local Contrast"), filter()->filterAction(), filter()->getTargetImage());
 }
 
 void LocalContrastTool::slotLoadSettings()
 {
     d->settingsView->loadSettings();
     d->gboxSettings->histogramBox()->histogram()->reset();
     slotPreview();
 }
 
 void LocalContrastTool::slotSaveAsSettings()
 {
     d->settingsView->saveAsSettings();
 }
 
 } // namespace DigikamEditorLocalContrastToolPlugin
 
 #include "moc_localcontrasttool.cpp"