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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date : 2004-06-06
+ * Description : Red eyes correction tool for image editor
+ *
+ * Copyright (C) 2004-2005 by Renchi Raju <[email protected]>
+ * Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * ============================================================ */
+
+// TQt includes.
+
+#include <tqcolor.h>
+#include <tqhbox.h>
+#include <tqhgroupbox.h>
+#include <tqvgroupbox.h>
+#include <tqhbuttongroup.h>
+#include <tqvbox.h>
+#include <tqlabel.h>
+#include <tqlayout.h>
+#include <tqframe.h>
+#include <tqlabel.h>
+#include <tqpushbutton.h>
+#include <tqcombobox.h>
+#include <tqwhatsthis.h>
+#include <tqtooltip.h>
+
+// KDE includes.
+
+#include <kcolordialog.h>
+#include <knuminput.h>
+#include <tdelocale.h>
+#include <tdeapplication.h>
+#include <tdeconfig.h>
+#include <kcursor.h>
+#include <kstandarddirs.h>
+#include <kcolordialog.h>
+
+// Digikam includes.
+
+#include "imageiface.h"
+#include "imagewidget.h"
+#include "histogramwidget.h"
+#include "colorgradientwidget.h"
+#include "bcgmodifier.h"
+#include "dimg.h"
+#include "dimgimagefilters.h"
+
+// Local includes.
+
+#include "imageeffect_redeye.h"
+#include "imageeffect_redeye.moc"
+
+namespace DigikamImagesPluginCore
+{
+
+ImageEffect_RedEye::ImageEffect_RedEye(TQWidget* parent)
+ : Digikam::ImageDlgBase(parent, i18n("Red Eye Reduction"), "redeye", false)
+{
+ m_destinationPreviewData = 0;
+ setHelp("redeyecorrectiontool.anchor", "digikam");
+
+ m_previewWidget = new Digikam::ImageWidget("redeye Tool Dialog", plainPage(),
+ i18n("<p>Here you can see the image selection preview with "
+ "red eye reduction applied."),
+ true, Digikam::ImageGuideWidget::PickColorMode, true, true);
+ setPreviewAreaWidget(m_previewWidget);
+
+ // -------------------------------------------------------------
+
+ TQWidget *gboxSettings = new TQWidget(plainPage());
+ TQGridLayout* gridSettings = new TQGridLayout(gboxSettings, 11, 4, spacingHint());
+
+ TQLabel *label1 = new TQLabel(i18n("Channel:"), gboxSettings);
+ label1->setAlignment ( TQt::AlignRight | TQt::AlignVCenter );
+ m_channelCB = new TQComboBox( false, gboxSettings );
+ m_channelCB->insertItem( i18n("Luminosity") );
+ m_channelCB->insertItem( i18n("Red") );
+ m_channelCB->insertItem( i18n("Green") );
+ m_channelCB->insertItem( i18n("Blue") );
+ TQWhatsThis::add( m_channelCB, i18n("<p>Select the histogram channel to display here:<p>"
+ "<b>Luminosity</b>: display the image's luminosity values.<p>"
+ "<b>Red</b>: display the red image channel values.<p>"
+ "<b>Green</b>: display the green image channel values.<p>"
+ "<b>Blue</b>: display the blue image channel values.<p>"));
+
+ m_scaleBG = new TQHButtonGroup(gboxSettings);
+ m_scaleBG->setExclusive(true);
+ m_scaleBG->setFrameShape(TQFrame::NoFrame);
+ m_scaleBG->setInsideMargin(0);
+ TQWhatsThis::add( m_scaleBG, i18n("<p>Select the histogram scale here.<p>"
+ "If the image's maximum counts are small, you can use the linear scale.<p>"
+ "The logarithmic scale can be used when the maximal counts are big "
+ "to show all values (small and large) on the graph."));
+
+ TQPushButton *linHistoButton = new TQPushButton( m_scaleBG );
+ TQToolTip::add( linHistoButton, i18n( "<p>Linear" ) );
+ m_scaleBG->insert(linHistoButton, Digikam::HistogramWidget::LinScaleHistogram);
+ TDEGlobal::dirs()->addResourceType("histogram-lin", TDEGlobal::dirs()->kde_default("data") + "digikam/data");
+ TQString directory = TDEGlobal::dirs()->findResourceDir("histogram-lin", "histogram-lin.png");
+ linHistoButton->setPixmap( TQPixmap( directory + "histogram-lin.png" ) );
+ linHistoButton->setToggleButton(true);
+
+ TQPushButton *logHistoButton = new TQPushButton( m_scaleBG );
+ TQToolTip::add( logHistoButton, i18n( "<p>Logarithmic" ) );
+ m_scaleBG->insert(logHistoButton, Digikam::HistogramWidget::LogScaleHistogram);
+ TDEGlobal::dirs()->addResourceType("histogram-log", TDEGlobal::dirs()->kde_default("data") + "digikam/data");
+ directory = TDEGlobal::dirs()->findResourceDir("histogram-log", "histogram-log.png");
+ logHistoButton->setPixmap( TQPixmap( directory + "histogram-log.png" ) );
+ logHistoButton->setToggleButton(true);
+
+ TQHBoxLayout* l1 = new TQHBoxLayout();
+ l1->addWidget(label1);
+ l1->addWidget(m_channelCB);
+ l1->addStretch(10);
+ l1->addWidget(m_scaleBG);
+
+ // -------------------------------------------------------------
+
+ TQVBox *histoBox = new TQVBox(gboxSettings);
+ m_histogramWidget = new Digikam::HistogramWidget(256, 140, histoBox, false, true, true);
+ TQWhatsThis::add( m_histogramWidget, i18n("<p>Here you can see the target preview image histogram "
+ "of the selected image channel. It is "
+ "updated upon setting changes."));
+ TQLabel *space = new TQLabel(histoBox);
+ space->setFixedHeight(1);
+ m_hGradient = new Digikam::ColorGradientWidget(Digikam::ColorGradientWidget::Horizontal, 10, histoBox);
+ m_hGradient->setColors(TQColor("black"), TQColor("white"));
+
+ // -------------------------------------------------------------
+
+ m_thresholdLabel = new TQLabel(i18n("Sensitivity:"), gboxSettings);
+ m_redThreshold = new KIntNumInput(gboxSettings);
+ m_redThreshold->setRange(10, 90, 1, true);
+ m_redThreshold->setValue(20);
+ TQWhatsThis::add(m_redThreshold, i18n("<p>Sets the red color pixels selection threshold. "
+ "Low values will select more red color pixels (agressive correction), high "
+ "values less (mild correction). Use low value if eye have been selected "
+ "exactly. Use high value if other parts of the face are also selected."));
+
+ m_smoothLabel = new TQLabel(i18n("Smooth:"), gboxSettings);
+ m_smoothLevel = new KIntNumInput(gboxSettings);
+ m_smoothLevel->setRange(0, 5, 1, true);
+ m_smoothLevel->setValue(1);
+ TQWhatsThis::add(m_smoothLevel, i18n("<p>Sets the smoothness value when blurring the border "
+ "of the changed pixels. "
+ "This leads to a more naturally looking pupil."));
+
+ TQLabel *label3 = new TQLabel(i18n("Coloring Tint:"), gboxSettings);
+ m_HSSelector = new KHSSelector(gboxSettings);
+ m_VSelector = new KValueSelector(gboxSettings);
+ m_HSSelector->setMinimumSize(200, 142);
+ m_VSelector->setMinimumSize(26, 142);
+ TQWhatsThis::add(m_HSSelector, i18n("<p>Sets a custom color to re-colorize the eyes."));
+
+ TQLabel *label4 = new TQLabel(i18n("Tint Level:"), gboxSettings);
+ m_tintLevel = new KIntNumInput(gboxSettings);
+ m_tintLevel->setRange(1, 200, 1, true);
+ m_tintLevel->setValue(128);
+ TQWhatsThis::add(m_tintLevel, i18n("<p>Set the tint level to adjust the luminosity of "
+ "the new color of the pupil."));
+
+ gridSettings->addMultiCellLayout(l1, 0, 0, 0, 4);
+ gridSettings->addMultiCellWidget(histoBox, 1, 2, 0, 4);
+ gridSettings->addMultiCellWidget(m_thresholdLabel, 3, 3, 0, 4);
+ gridSettings->addMultiCellWidget(m_redThreshold, 4, 4, 0, 4);
+ gridSettings->addMultiCellWidget(m_smoothLabel, 5, 5, 0, 4);
+ gridSettings->addMultiCellWidget(m_smoothLevel, 6, 6, 0, 4);
+ gridSettings->addMultiCellWidget(label3, 7, 7, 0, 4);
+ gridSettings->addMultiCellWidget(m_HSSelector, 8, 8, 0, 3);
+ gridSettings->addMultiCellWidget(m_VSelector, 8, 8, 4, 4);
+ gridSettings->addMultiCellWidget(label4, 9, 9, 0, 4);
+ gridSettings->addMultiCellWidget(m_tintLevel, 10, 10, 0, 4);
+ gridSettings->setRowStretch(11, 10);
+ gridSettings->setColStretch(3, 10);
+ setUserAreaWidget(gboxSettings);
+
+ // -------------------------------------------------------------
+
+ connect(m_channelCB, TQ_SIGNAL(activated(int)),
+ this, TQ_SLOT(slotChannelChanged(int)));
+
+ connect(m_scaleBG, TQ_SIGNAL(released(int)),
+ this, TQ_SLOT(slotScaleChanged(int)));
+
+ connect(m_previewWidget, TQ_SIGNAL(spotPositionChangedFromTarget(const Digikam::DColor&, const TQPoint&)),
+ this, TQ_SLOT(slotColorSelectedFromTarget(const Digikam::DColor&)));
+
+ connect(m_previewWidget, TQ_SIGNAL(signalResized()),
+ this, TQ_SLOT(slotEffect()));
+
+ connect(m_redThreshold, TQ_SIGNAL(valueChanged(int)),
+ this, TQ_SLOT(slotTimer()));
+
+ connect(m_smoothLevel, TQ_SIGNAL(valueChanged(int)),
+ this, TQ_SLOT(slotTimer()));
+
+ connect(m_HSSelector, TQ_SIGNAL(valueChanged(int, int)),
+ this, TQ_SLOT(slotHSChanged(int, int)));
+
+ connect(m_VSelector, TQ_SIGNAL(valueChanged(int)),
+ this, TQ_SLOT(slotTimer()));
+
+ connect(m_tintLevel, TQ_SIGNAL(valueChanged(int)),
+ this, TQ_SLOT(slotTimer()));
+}
+
+ImageEffect_RedEye::~ImageEffect_RedEye()
+{
+ m_histogramWidget->stopHistogramComputation();
+
+ if (m_destinationPreviewData)
+ delete [] m_destinationPreviewData;
+
+ delete m_histogramWidget;
+ delete m_previewWidget;
+}
+
+void ImageEffect_RedEye::slotHSChanged(int h, int s)
+{
+ m_VSelector->blockSignals(true);
+ m_VSelector->setHue(h);
+ m_VSelector->setSaturation(s);
+ m_VSelector->updateContents();
+ m_VSelector->repaint(false);
+ m_VSelector->blockSignals(false);
+ slotTimer();
+}
+
+void ImageEffect_RedEye::slotChannelChanged(int channel)
+{
+ switch(channel)
+ {
+ case LuminosityChannel:
+ m_histogramWidget->m_channelType = Digikam::HistogramWidget::ValueHistogram;
+ m_hGradient->setColors( TQColor( "black" ), TQColor( "white" ) );
+ break;
+
+ case RedChannel:
+ m_histogramWidget->m_channelType = Digikam::HistogramWidget::RedChannelHistogram;
+ m_hGradient->setColors( TQColor( "black" ), TQColor( "red" ) );
+ break;
+
+ case GreenChannel:
+ m_histogramWidget->m_channelType = Digikam::HistogramWidget::GreenChannelHistogram;
+ m_hGradient->setColors( TQColor( "black" ), TQColor( "green" ) );
+ break;
+
+ case BlueChannel:
+ m_histogramWidget->m_channelType = Digikam::HistogramWidget::BlueChannelHistogram;
+ m_hGradient->setColors( TQColor( "black" ), TQColor( "blue" ) );
+ break;
+ }
+
+ m_histogramWidget->repaint(false);
+}
+
+void ImageEffect_RedEye::slotScaleChanged(int scale)
+{
+ m_histogramWidget->m_scaleType = scale;
+ m_histogramWidget->repaint(false);
+}
+
+void ImageEffect_RedEye::slotColorSelectedFromTarget(const Digikam::DColor& color)
+{
+ m_histogramWidget->setHistogramGuideByColor(color);
+}
+
+void ImageEffect_RedEye::readUserSettings()
+{
+ TDEConfig* config = kapp->config();
+ config->setGroup("redeye Tool Dialog");
+ m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity.
+ m_scaleBG->setButton(config->readNumEntry("Histogram Scale", Digikam::HistogramWidget::LogScaleHistogram));
+ m_redThreshold->setValue(config->readNumEntry("RedThreshold", 20));
+ m_smoothLevel->setValue(config->readNumEntry("SmoothLevel", 1));
+ m_HSSelector->setXValue(config->readNumEntry("HueColoringTint", 0));
+ m_HSSelector->setYValue(config->readNumEntry("SatColoringTint", 0));
+ m_VSelector->setValue(config->readNumEntry("ValColoringTint", 0));
+ m_tintLevel->setValue(config->readNumEntry("TintLevel", 128));
+
+ slotHSChanged(m_HSSelector->xValue(), m_HSSelector->yValue());
+ slotChannelChanged(m_channelCB->currentItem());
+ slotScaleChanged(m_scaleBG->selectedId());
+}
+
+void ImageEffect_RedEye::writeUserSettings()
+{
+ TDEConfig* config = kapp->config();
+ config->setGroup("redeye Tool Dialog");
+ config->writeEntry("Histogram Channel", m_channelCB->currentItem());
+ config->writeEntry("Histogram Scale", m_scaleBG->selectedId());
+ config->writeEntry("RedThreshold", m_redThreshold->value());
+ config->writeEntry("SmoothLevel", m_smoothLevel->value());
+ config->writeEntry("HueColoringTint", m_HSSelector->xValue());
+ config->writeEntry("SatColoringTint", m_HSSelector->yValue());
+ config->writeEntry("ValColoringTint", m_VSelector->value());
+ config->writeEntry("TintLevel", m_tintLevel->value());
+ config->sync();
+}
+
+void ImageEffect_RedEye::resetValues()
+{
+ m_redThreshold->blockSignals(true);
+ m_HSSelector->blockSignals(true);
+ m_VSelector->blockSignals(true);
+ m_tintLevel->blockSignals(true);
+
+ m_redThreshold->setValue(20);
+ m_smoothLevel->setValue(1);
+
+ // Black color by default
+ m_HSSelector->setXValue(0);
+ m_HSSelector->setYValue(0);
+ m_VSelector->setValue(0);
+
+ m_tintLevel->setValue(128);
+
+ m_redThreshold->blockSignals(false);
+ m_HSSelector->blockSignals(false);
+ m_VSelector->blockSignals(false);
+ m_tintLevel->blockSignals(false);
+}
+
+void ImageEffect_RedEye::slotEffect()
+{
+ kapp->setOverrideCursor(KCursor::waitCursor());
+
+ m_histogramWidget->stopHistogramComputation();
+
+ if (m_destinationPreviewData)
+ delete [] m_destinationPreviewData;
+
+ // Here, we need to use the real selection image data because we will apply
+ // a Gaussian blur filter on pixels and we cannot use directly the preview scaled image
+ // else the blur radius will not give the same result between preview and final rendering.
+ Digikam::ImageIface* iface = m_previewWidget->imageIface();
+ m_destinationPreviewData = iface->getImageSelection();
+ int w = iface->selectedWidth();
+ int h = iface->selectedHeight();
+ bool sb = iface->originalSixteenBit();
+ bool a = iface->originalHasAlpha();
+ Digikam::DImg selection(w, h, sb, a, m_destinationPreviewData);
+
+ redEyeFilter(selection);
+
+ Digikam::DImg preview = selection.smoothScale(iface->previewWidth(), iface->previewHeight());
+
+ iface->putPreviewImage(preview.bits());
+ m_previewWidget->updatePreview();
+
+ // Update histogram.
+
+ memcpy(m_destinationPreviewData, selection.bits(), selection.numBytes());
+ m_histogramWidget->updateData(m_destinationPreviewData, w, h, sb, 0, 0, 0, false);
+
+ kapp->restoreOverrideCursor();
+}
+
+void ImageEffect_RedEye::finalRendering()
+{
+ kapp->setOverrideCursor( KCursor::waitCursor() );
+
+ Digikam::ImageIface* iface = m_previewWidget->imageIface();
+ uchar *data = iface->getImageSelection();
+ int w = iface->selectedWidth();
+ int h = iface->selectedHeight();
+ bool sixteenBit = iface->originalSixteenBit();
+ bool hasAlpha = iface->originalHasAlpha();
+ Digikam::DImg selection(w, h, sixteenBit, hasAlpha, data);
+ delete [] data;
+
+ redEyeFilter(selection);
+
+ iface->putImageSelection(i18n("Red Eyes Correction"), selection.bits());
+
+ kapp->restoreOverrideCursor();
+ accept();
+}
+
+void ImageEffect_RedEye::redEyeFilter(Digikam::DImg& selection)
+{
+ Digikam::DImg mask(selection.width(), selection.height(), selection.sixteenBit(), true,
+ selection.bits(), true);
+
+ selection = mask.copy();
+ float redThreshold = m_redThreshold->value()/10.0;
+ int hue = m_HSSelector->xValue();
+ int sat = m_HSSelector->yValue();
+ int val = m_VSelector->value();
+ KColor coloring;
+ coloring.setHsv(hue, sat, val);
+
+ struct channel
+ {
+ float red_gain;
+ float green_gain;
+ float blue_gain;
+ };
+
+ channel red_chan, green_chan, blue_chan;
+
+ red_chan.red_gain = 0.1;
+ red_chan.green_gain = 0.6;
+ red_chan.blue_gain = 0.3;
+
+ green_chan.red_gain = 0.0;
+ green_chan.green_gain = 1.0;
+ green_chan.blue_gain = 0.0;
+
+ blue_chan.red_gain = 0.0;
+ blue_chan.green_gain = 0.0;
+ blue_chan.blue_gain = 1.0;
+
+ float red_norm, green_norm, blue_norm;
+ int level = 201 - m_tintLevel->value();
+
+ red_norm = 1.0 / (red_chan.red_gain + red_chan.green_gain + red_chan.blue_gain);
+ green_norm = 1.0 / (green_chan.red_gain + green_chan.green_gain + green_chan.blue_gain);
+ blue_norm = 1.0 / (blue_chan.red_gain + blue_chan.green_gain + blue_chan.blue_gain);
+
+ red_norm *= coloring.red() / level;
+ green_norm *= coloring.green() / level;
+ blue_norm *= coloring.blue() / level;
+
+ // Perform a red color pixels detection in selection image and create a correction mask using an alpha channel.
+
+ if (!selection.sixteenBit()) // 8 bits image.
+ {
+ uchar* ptr = selection.bits();
+ uchar* mptr = mask.bits();
+ uchar r, g, b, r1, g1, b1;
+
+ for (uint i = 0 ; i < selection.width() * selection.height() ; i++)
+ {
+ b = ptr[0];
+ g = ptr[1];
+ r = ptr[2];
+ mptr[3] = 255;
+
+ if (r >= ( redThreshold * g))
+ {
+ r1 = TQMIN(255, (int)(red_norm * (red_chan.red_gain * r +
+ red_chan.green_gain * g +
+ red_chan.blue_gain * b)));
+
+ g1 = TQMIN(255, (int)(green_norm * (green_chan.red_gain * r +
+ green_chan.green_gain * g +
+ green_chan.blue_gain * b)));
+
+ b1 = TQMIN(255, (int)(blue_norm * (blue_chan.red_gain * r +
+ blue_chan.green_gain * g +
+ blue_chan.blue_gain * b)));
+
+ mptr[0] = b1;
+ mptr[1] = g1;
+ mptr[2] = r1;
+ mptr[3] = TQMIN( (int)((r-g) / 150.0 * 255.0), 255);
+ }
+
+ ptr += 4;
+ mptr+= 4;
+ }
+ }
+ else // 16 bits image.
+ {
+ unsigned short* ptr = (unsigned short*)selection.bits();
+ unsigned short* mptr = (unsigned short*)mask.bits();
+ unsigned short r, g, b, r1, g1, b1;
+
+ for (uint i = 0 ; i < selection.width() * selection.height() ; i++)
+ {
+ b = ptr[0];
+ g = ptr[1];
+ r = ptr[2];
+ mptr[3] = 65535;
+
+ if (r >= ( redThreshold * g))
+ {
+ r1 = TQMIN(65535, (int)(red_norm * (red_chan.red_gain * r +
+ red_chan.green_gain * g +
+ red_chan.blue_gain * b)));
+
+ g1 = TQMIN(65535, (int)(green_norm * (green_chan.red_gain * r +
+ green_chan.green_gain * g +
+ green_chan.blue_gain * b)));
+
+ b1 = TQMIN(65535, (int)(blue_norm * (blue_chan.red_gain * r +
+ blue_chan.green_gain * g +
+ blue_chan.blue_gain * b)));
+
+ mptr[0] = b1;
+ mptr[1] = g1;
+ mptr[2] = r1;
+ mptr[3] = TQMIN( (int)((r-g) / 38400.0 * 65535.0), 65535);;
+ }
+
+ ptr += 4;
+ mptr+= 4;
+ }
+ }
+
+ // Now, we will blur only the transparency pixels from the mask.
+
+ Digikam::DImg mask2 = mask.copy();
+ Digikam::DImgImageFilters filter;
+ filter.gaussianBlurImage(mask2.bits(), mask2.width(), mask2.height(),
+ mask2.sixteenBit(), m_smoothLevel->value());
+
+ if (!selection.sixteenBit()) // 8 bits image.
+ {
+ uchar* mptr = mask.bits();
+ uchar* mptr2 = mask2.bits();
+
+ for (uint i = 0 ; i < mask2.width() * mask2.height() ; i++)
+ {
+ if (mptr2[3] < 255)
+ {
+ mptr[0] = mptr2[0];
+ mptr[1] = mptr2[1];
+ mptr[2] = mptr2[2];
+ mptr[3] = mptr2[3];
+ }
+
+ mptr += 4;
+ mptr2+= 4;
+ }
+ }
+ else // 16 bits image.
+ {
+ unsigned short* mptr = (unsigned short*)mask.bits();
+ unsigned short* mptr2 = (unsigned short*)mask2.bits();
+
+ for (uint i = 0 ; i < mask2.width() * mask2.height() ; i++)
+ {
+ if (mptr2[3] < 65535)
+ {
+ mptr[0] = mptr2[0];
+ mptr[1] = mptr2[1];
+ mptr[2] = mptr2[2];
+ mptr[3] = mptr2[3];
+ }
+
+ mptr += 4;
+ mptr2+= 4;
+ }
+ }
+
+ // - Perform pixels blending using alpha channel between the mask and the selection.
+
+ Digikam::DColorComposer *composer = Digikam::DColorComposer::getComposer(Digikam::DColorComposer::PorterDuffSrcOver);
+
+ // NOTE: 'mask' is the Source image, 'selection' is the Destination image.
+
+ selection.bitBlendImage(composer, &mask,
+ 0, 0, mask.width(), mask.height(),
+ 0, 0);
+}
+
+} // NameSpace DigikamImagesPluginCore
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-11 08:48:46 +0000