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Diffstat (limited to 'digikam/imageplugins/adjustlevels/adjustlevels.cpp')
| -rw-r--r-- | digikam/imageplugins/adjustlevels/adjustlevels.cpp | 913 |
1 files changed, 913 insertions, 0 deletions
diff --git a/digikam/imageplugins/adjustlevels/adjustlevels.cpp b/digikam/imageplugins/adjustlevels/adjustlevels.cpp new file mode 100644 index 00000000..bc9a000d --- /dev/null +++ b/digikam/imageplugins/adjustlevels/adjustlevels.cpp @@ -0,0 +1,913 @@ +/* ============================================================ + * + * This file is a part of digiKam project + * http://www.digikam.org + * + * Date : 2004-07-20 + * Description : image histogram adjust levels. + * + * 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. + * + * ============================================================ */ + +// C++ includes. + +#include <cmath> + +// Qt includes. + +#include <qlayout.h> +#include <qcolor.h> +#include <qgroupbox.h> +#include <qhgroupbox.h> +#include <qvgroupbox.h> +#include <qlabel.h> +#include <qpainter.h> +#include <qcombobox.h> +#include <qspinbox.h> +#include <qwhatsthis.h> +#include <qtooltip.h> +#include <qpushbutton.h> +#include <qlayout.h> +#include <qframe.h> +#include <qtimer.h> +#include <qhbuttongroup.h> +#include <qpixmap.h> + +// KDE includes. + +#include <kconfig.h> +#include <kcursor.h> +#include <klocale.h> +#include <knuminput.h> +#include <kmessagebox.h> +#include <kselect.h> +#include <kfiledialog.h> +#include <kglobalsettings.h> +#include <kaboutdata.h> +#include <khelpmenu.h> +#include <kiconloader.h> +#include <kapplication.h> +#include <kpopupmenu.h> +#include <kstandarddirs.h> + +// Local includes. + +#include "version.h" +#include "ddebug.h" +#include "imageiface.h" +#include "imagewidget.h" +#include "imagehistogram.h" +#include "imagelevels.h" +#include "histogramwidget.h" +#include "dimgimagefilters.h" +#include "adjustlevels.h" +#include "adjustlevels.moc" + +namespace DigikamAdjustLevelsImagesPlugin +{ + +AdjustLevelDialog::AdjustLevelDialog(QWidget* parent) + : Digikam::ImageDlgBase(parent, i18n("Adjust Color Levels"), + "adjustlevels", true, false) +{ + m_destinationPreviewData = 0L; + + Digikam::ImageIface iface(0, 0); + uchar *data = iface.getOriginalImage(); + int w = iface.originalWidth(); + int h = iface.originalHeight(); + bool sixteenBit = iface.originalSixteenBit(); + bool hasAlpha = iface.originalHasAlpha(); + m_originalImage = Digikam::DImg(w, h, sixteenBit, hasAlpha ,data); + delete [] data; + + m_histoSegments = m_originalImage.sixteenBit() ? 65535 : 255; + m_levels = new Digikam::ImageLevels(m_originalImage.sixteenBit()); + + // About data and help button. + + KAboutData* about = new KAboutData("digikam", + I18N_NOOP("Adjust Color Levels"), + digikam_version, + I18N_NOOP("An image-histogram-levels adjustment plugin for digiKam."), + KAboutData::License_GPL, + "(c) 2004-2008, Gilles Caulier", + 0, + "http://www.digikam.org"); + + about->addAuthor("Gilles Caulier", I18N_NOOP("Author and maintainer"), + "caulier dot gilles at gmail dot com"); + + setAboutData(about); + + // ------------------------------------------------------------- + + m_previewWidget = new Digikam::ImageWidget("adjustlevels Tool Dialog", plainPage(), + i18n("<p>Here you can see the image's " + "level-adjustments preview. You can pick a spot on the image " + "to see the corresponding level in the histogram.")); + setPreviewAreaWidget(m_previewWidget); + + // ------------------------------------------------------------- + + QWidget *gboxSettings = new QWidget(plainPage()); + QGridLayout* grid = new QGridLayout(gboxSettings, 16, 8, spacingHint(), 0); + + QLabel *label1 = new QLabel(i18n("Channel:"), gboxSettings); + label1->setAlignment ( Qt::AlignRight | Qt::AlignVCenter ); + m_channelCB = new QComboBox( false, gboxSettings ); + m_channelCB->insertItem( i18n("Luminosity") ); + m_channelCB->insertItem( i18n("Red") ); + m_channelCB->insertItem( i18n("Green") ); + m_channelCB->insertItem( i18n("Blue") ); + m_channelCB->insertItem( i18n("Alpha") ); + m_channelCB->setCurrentText( i18n("Luminosity") ); + QWhatsThis::add( m_channelCB, i18n("<p>Here select the histogram channel to display:<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>" + "<b>Alpha</b>: display the alpha image-channel values. " + "This channel corresponds to the transparency value and " + "is supported by some image formats, such as PNG or TIF.")); + + m_scaleBG = new QHButtonGroup(gboxSettings); + m_scaleBG->setExclusive(true); + m_scaleBG->setFrameShape(QFrame::NoFrame); + m_scaleBG->setInsideMargin( 0 ); + QWhatsThis::add( m_scaleBG, i18n("<p>Here select the histogram scale.<p>" + "If the image's maximal counts are small, you can use the linear scale.<p>" + "The Logarithmic scale can be used when the maximal counts are big; " + "if it is used, all values (small and large) will be visible on the graph.")); + + QPushButton *linHistoButton = new QPushButton( m_scaleBG ); + QToolTip::add( linHistoButton, i18n( "<p>Linear" ) ); + m_scaleBG->insert(linHistoButton, Digikam::HistogramWidget::LinScaleHistogram); + KGlobal::dirs()->addResourceType("histogram-lin", KGlobal::dirs()->kde_default("data") + "digikam/data"); + QString directory = KGlobal::dirs()->findResourceDir("histogram-lin", "histogram-lin.png"); + linHistoButton->setPixmap( QPixmap( directory + "histogram-lin.png" ) ); + linHistoButton->setToggleButton(true); + + QPushButton *logHistoButton = new QPushButton( m_scaleBG ); + QToolTip::add( logHistoButton, i18n( "<p>Logarithmic" ) ); + m_scaleBG->insert(logHistoButton, Digikam::HistogramWidget::LogScaleHistogram); + KGlobal::dirs()->addResourceType("histogram-log", KGlobal::dirs()->kde_default("data") + "digikam/data"); + directory = KGlobal::dirs()->findResourceDir("histogram-log", "histogram-log.png"); + logHistoButton->setPixmap( QPixmap( directory + "histogram-log.png" ) ); + logHistoButton->setToggleButton(true); + + QHBoxLayout* l1 = new QHBoxLayout(); + l1->addWidget(label1); + l1->addWidget(m_channelCB); + l1->addStretch(10); + l1->addWidget(m_scaleBG); + + // ------------------------------------------------------------- + + m_histogramWidget = new Digikam::HistogramWidget(256, 140, gboxSettings, false, true, true); + QWhatsThis::add( m_histogramWidget, i18n("<p>Here you can see the target preview image histogram drawing of the " + "selected image channel. This one is re-computed at any levels " + "settings changes.")); + + m_levelsHistogramWidget = new Digikam::HistogramWidget(256, 140, m_originalImage.bits(), m_originalImage.width(), + m_originalImage.height(), m_originalImage.sixteenBit(), gboxSettings, false); + QWhatsThis::add( m_levelsHistogramWidget, i18n("<p>This is the histogram drawing of the selected channel " + "from original image")); + + // ------------------------------------------------------------- + + m_hGradientMinInput = new KGradientSelector( KSelector::Horizontal, gboxSettings ); + m_hGradientMinInput->setFixedHeight( 20 ); + m_hGradientMinInput->setMinValue(0); + m_hGradientMinInput->setMaxValue(m_histoSegments); + QWhatsThis::add( m_hGradientMinInput, i18n("<p>Select the minimal intensity input value of the histogram.")); + QToolTip::add( m_hGradientMinInput, i18n( "Minimal intensity input." ) ); + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMinInput->installEventFilter(this); + + m_hGradientMaxInput = new KGradientSelector( KSelector::Horizontal, gboxSettings ); + m_hGradientMaxInput->setFixedHeight( 20 ); + m_hGradientMaxInput->setMinValue(0); + m_hGradientMaxInput->setMaxValue(m_histoSegments); + QWhatsThis::add( m_hGradientMaxInput, i18n("<p>Select the maximal intensity input value of the histogram.")); + QToolTip::add( m_hGradientMaxInput, i18n( "Maximal intensity input." ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMaxInput->installEventFilter(this); + + m_minInput = new QSpinBox(0, m_histoSegments, 1, gboxSettings); + m_minInput->setValue(0); + QWhatsThis::add( m_minInput, i18n("<p>Select the minimal intensity input value of the histogram.")); + QToolTip::add( m_minInput, i18n( "Minimal intensity input." ) ); + + m_gammaInput = new KDoubleNumInput(gboxSettings); + m_gammaInput->setPrecision(2); + m_gammaInput->setRange(0.1, 3.0, 0.01); + m_gammaInput->setValue(1.0); + QToolTip::add( m_gammaInput, i18n( "Gamma input value." ) ); + QWhatsThis::add( m_gammaInput, i18n("<p>Select the gamma input value.")); + + m_maxInput = new QSpinBox(0, m_histoSegments, 1, gboxSettings); + m_maxInput->setValue(m_histoSegments); + QToolTip::add( m_maxInput, i18n( "Maximal intensity input." ) ); + QWhatsThis::add( m_maxInput, i18n("<p>Select the maximal intensity input value of the histogram.")); + + m_hGradientMinOutput = new KGradientSelector( KSelector::Horizontal, gboxSettings ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "white" ) ); + QWhatsThis::add( m_hGradientMinOutput, i18n("<p>Select the minimal intensity output value of the histogram.")); + QToolTip::add( m_hGradientMinOutput, i18n( "Minimal intensity output." ) ); + m_hGradientMinOutput->setFixedHeight( 20 ); + m_hGradientMinOutput->setMinValue(0); + m_hGradientMinOutput->setMaxValue(m_histoSegments); + m_hGradientMinOutput->installEventFilter(this); + + m_hGradientMaxOutput = new KGradientSelector( KSelector::Horizontal, gboxSettings ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "white" ) ); + QWhatsThis::add( m_hGradientMaxOutput, i18n("<p>Select the maximal intensity output value of the histogram.")); + QToolTip::add( m_hGradientMaxOutput, i18n( "Maximal intensity output." ) ); + m_hGradientMaxOutput->setFixedHeight( 20 ); + m_hGradientMaxOutput->setMinValue(0); + m_hGradientMaxOutput->setMaxValue(m_histoSegments); + m_hGradientMaxOutput->installEventFilter(this); + + m_minOutput = new QSpinBox(0, m_histoSegments, 1, gboxSettings); + m_minOutput->setValue(0); + QToolTip::add( m_minOutput, i18n( "Minimal intensity output." ) ); + QWhatsThis::add( m_minOutput, i18n("<p>Select the minimal intensity output value of the histogram.")); + + m_maxOutput = new QSpinBox(0, m_histoSegments, 1, gboxSettings); + m_maxOutput->setValue(m_histoSegments); + QToolTip::add( m_maxOutput, i18n( "Maximal intensity output." ) ); + QWhatsThis::add( m_maxOutput, i18n("<p>Select the maximal intensity output value of the histogram.")); + + // ------------------------------------------------------------- + + m_pickerColorButtonGroup = new QHButtonGroup(gboxSettings); + m_pickBlack = new QPushButton(m_pickerColorButtonGroup); + m_pickerColorButtonGroup->insert(m_pickBlack, BlackTonal); + KGlobal::dirs()->addResourceType("color-picker-black", KGlobal::dirs()->kde_default("data") + + "digikam/data"); + directory = KGlobal::dirs()->findResourceDir("color-picker-black", "color-picker-black.png"); + m_pickBlack->setPixmap( QPixmap( directory + "color-picker-black.png" ) ); + m_pickBlack->setToggleButton(true); + QToolTip::add( m_pickBlack, i18n( "All channels shadow tone color picker" ) ); + QWhatsThis::add( m_pickBlack, i18n("<p>With this button, you can pick the color from original image used to set <b>Shadow Tone</b> " + "levels input on Red, Green, Blue, and Luminosity channels.")); + m_pickGray = new QPushButton(m_pickerColorButtonGroup); + m_pickerColorButtonGroup->insert(m_pickGray, GrayTonal); + KGlobal::dirs()->addResourceType("color-picker-gray", KGlobal::dirs()->kde_default("data") + + "digikam/data"); + directory = KGlobal::dirs()->findResourceDir("color-picker-gray", "color-picker-gray.png"); + m_pickGray->setPixmap( QPixmap( directory + "color-picker-gray.png" ) ); + m_pickGray->setToggleButton(true); + QToolTip::add( m_pickGray, i18n( "All channels middle tone color picker" ) ); + QWhatsThis::add( m_pickGray, i18n("<p>With this button, you can pick the color from original image used to set <b>Middle Tone</b> " + "levels input on Red, Green, Blue, and Luminosity channels.")); + m_pickWhite = new QPushButton(m_pickerColorButtonGroup); + m_pickerColorButtonGroup->insert(m_pickWhite, WhiteTonal); + KGlobal::dirs()->addResourceType("color-picker-white", KGlobal::dirs()->kde_default("data") + + "digikam/data"); + directory = KGlobal::dirs()->findResourceDir("color-picker-white", "color-picker-white.png"); + m_pickWhite->setPixmap( QPixmap( directory + "color-picker-white.png" ) ); + m_pickWhite->setToggleButton(true); + QToolTip::add( m_pickWhite, i18n( "All channels highlight tone color picker" ) ); + QWhatsThis::add( m_pickWhite, i18n("<p>With this button, you can pick the color from original image used to set <b>Highlight Tone</b> " + "levels input on Red, Green, Blue, and Luminosity channels.")); + m_pickerColorButtonGroup->setExclusive(true); + m_pickerColorButtonGroup->setFrameShape(QFrame::NoFrame); + + m_autoButton = new QPushButton(gboxSettings); + m_autoButton->setPixmap(kapp->iconLoader()->loadIcon("run", (KIcon::Group)KIcon::Toolbar)); QToolTip::add( m_autoButton, i18n( "Adjust all levels automatically." ) ); + QWhatsThis::add( m_autoButton, i18n("<p>If you press this button, all channel levels will be adjusted " + "automatically.")); + + m_resetButton = new QPushButton(i18n("&Reset"), gboxSettings); + m_resetButton->setPixmap(kapp->iconLoader()->loadIcon("reload_page", (KIcon::Group)KIcon::Toolbar)); + QToolTip::add( m_resetButton, i18n( "Reset current channel levels' values." ) ); + QWhatsThis::add( m_resetButton, i18n("<p>If you press this button, all levels' values " + "from the current selected channel " + "will be reset to the default values.")); + + QLabel *space = new QLabel(gboxSettings); + space->setFixedWidth(spacingHint()); + + QHBoxLayout* l3 = new QHBoxLayout(); + l3->addWidget(m_pickerColorButtonGroup); + l3->addWidget(m_autoButton); + l3->addWidget(space); + l3->addWidget(m_resetButton); + l3->addStretch(10); + + // ------------------------------------------------------------- + + grid->addMultiCellLayout(l1, 0, 0, 0, 6); + grid->setRowSpacing(1, spacingHint()); + grid->addMultiCellWidget(m_histogramWidget, 2, 2, 1, 5); + grid->setRowSpacing(3, spacingHint()); + grid->addMultiCellWidget(m_levelsHistogramWidget, 4, 4, 1, 5); + grid->addMultiCellWidget(m_hGradientMinInput, 5, 5, 0, 6); + grid->addMultiCellWidget(m_minInput, 5, 5, 8, 8); + grid->setRowSpacing(6, spacingHint()); + grid->addMultiCellWidget(m_hGradientMaxInput, 7, 7, 0, 6); + grid->addMultiCellWidget(m_maxInput, 7, 7, 8, 8); + grid->setRowSpacing(8, spacingHint()); + grid->addMultiCellWidget(m_gammaInput, 9, 9, 0, 8); + grid->setRowSpacing(10, spacingHint()); + grid->addMultiCellWidget(m_hGradientMinOutput, 11, 11, 0, 6); + grid->addMultiCellWidget(m_minOutput, 11, 11, 8, 8); + grid->setRowSpacing(12, spacingHint()); + grid->addMultiCellWidget(m_hGradientMaxOutput, 13, 13, 0, 6); + grid->addMultiCellWidget(m_maxOutput, 13, 13, 8, 8); + grid->setRowSpacing(14, spacingHint()); + grid->addMultiCellLayout(l3, 15, 15, 0, 8); + grid->setRowStretch(16, 10); + grid->setColStretch(2, 10); + grid->setColSpacing(0, 5); + grid->setColSpacing(6, 5); + grid->setColSpacing(7, spacingHint()); + + setUserAreaWidget(gboxSettings); + + // ------------------------------------------------------------- + // Channels and scale selection slots. + + connect(m_channelCB, SIGNAL(activated(int)), + this, SLOT(slotChannelChanged(int))); + + connect(m_scaleBG, SIGNAL(released(int)), + this, SLOT(slotScaleChanged(int))); + + connect(m_previewWidget, SIGNAL(spotPositionChangedFromOriginal( const Digikam::DColor &, const QPoint & )), + this, SLOT(slotSpotColorChanged( const Digikam::DColor & ))); + + connect(m_previewWidget, SIGNAL(spotPositionChangedFromTarget( const Digikam::DColor &, const QPoint & )), + this, SLOT(slotColorSelectedFromTarget( const Digikam::DColor & ))); + + connect(m_previewWidget, SIGNAL(signalResized()), + this, SLOT(slotEffect())); + + // ------------------------------------------------------------- + // Color sliders and spinbox slots. + + connect(m_hGradientMinInput, SIGNAL(valueChanged(int)), + this, SLOT(slotAdjustMinInputSpinBox(int))); + + connect(m_minInput, SIGNAL(valueChanged (int)), + this, SLOT(slotAdjustSliders())); + + connect(m_gammaInput, SIGNAL(valueChanged (double)), + this, SLOT(slotGammaInputchanged(double))); + + connect(m_hGradientMaxInput, SIGNAL(valueChanged(int)), + this, SLOT(slotAdjustMaxInputSpinBox(int))); + + connect(m_maxInput, SIGNAL(valueChanged (int)), + this, SLOT(slotAdjustSliders())); + + connect(m_hGradientMinOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotAdjustMinOutputSpinBox(int))); + + connect(m_minOutput, SIGNAL(valueChanged (int)), + this, SLOT(slotAdjustSliders())); + + connect(m_hGradientMaxOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotAdjustMaxOutputSpinBox(int))); + + connect(m_maxOutput, SIGNAL(valueChanged (int)), + this, SLOT(slotAdjustSliders())); + + // ------------------------------------------------------------- + // Bouttons slots. + + connect(m_autoButton, SIGNAL(clicked()), + this, SLOT(slotAutoLevels())); + + connect(m_resetButton, SIGNAL(clicked()), + this, SLOT(slotResetCurrentChannel())); + + connect(m_pickerColorButtonGroup, SIGNAL(released(int)), + this, SLOT(slotPickerColorButtonActived())); + +} + +AdjustLevelDialog::~AdjustLevelDialog() +{ + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + delete m_histogramWidget; + delete m_levelsHistogramWidget; + delete m_levels; +} + +void AdjustLevelDialog::slotPickerColorButtonActived() +{ + // Save previous rendering mode and toggle to original image. + m_currentPreviewMode = m_previewWidget->getRenderingPreviewMode(); + m_previewWidget->setRenderingPreviewMode(Digikam::ImageGuideWidget::PreviewOriginalImage); +} + +void AdjustLevelDialog::slotSpotColorChanged(const Digikam::DColor &color) +{ + if ( m_pickBlack->isOn() ) + { + // Black tonal levels point. + m_levels->levelsBlackToneAdjustByColors(m_channelCB->currentItem(), color); + m_pickBlack->setOn(false); + } + else if ( m_pickGray->isOn() ) + { + // Gray tonal levels point. + m_levels->levelsGrayToneAdjustByColors(m_channelCB->currentItem(), color); + m_pickGray->setOn(false); + } + else if ( m_pickWhite->isOn() ) + { + // White tonal levels point. + m_levels->levelsWhiteToneAdjustByColors(m_channelCB->currentItem(), color); + m_pickWhite->setOn(false); + } + else + { + m_levelsHistogramWidget->setHistogramGuideByColor(color); + return; + } + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); + + // restore previous rendering mode. + m_previewWidget->setRenderingPreviewMode(m_currentPreviewMode); + + slotEffect(); +} + +void AdjustLevelDialog::slotColorSelectedFromTarget( const Digikam::DColor &color ) +{ + m_histogramWidget->setHistogramGuideByColor(color); +} + +void AdjustLevelDialog::slotGammaInputchanged(double val) +{ + blockSignals(true); + m_levels->setLevelGammaValue(m_channelCB->currentItem(), val); + blockSignals(false); + slotTimer(); +} + +void AdjustLevelDialog::slotAdjustMinInputSpinBox(int val) +{ + blockSignals(true); + + if ( val < m_hGradientMaxInput->value() ) + val = m_hGradientMaxInput->value(); + + m_minInput->setValue(m_histoSegments - val); + m_hGradientMinInput->setValue( val ); + m_levels->setLevelLowInputValue(m_channelCB->currentItem(), m_histoSegments - val); + blockSignals(false); + slotTimer(); +} + +void AdjustLevelDialog::slotAdjustMaxInputSpinBox(int val) +{ + blockSignals(true); + + if ( val > m_hGradientMinInput->value() ) + val = m_hGradientMinInput->value(); + + m_maxInput->setValue(m_histoSegments - val); + m_hGradientMaxInput->setValue( val ); + m_levels->setLevelHighInputValue(m_channelCB->currentItem(), m_histoSegments - val); + blockSignals(false); + slotTimer(); +} + +void AdjustLevelDialog::slotAdjustMinOutputSpinBox(int val) +{ + blockSignals(true); + + if ( val < m_hGradientMaxOutput->value() ) + val = m_hGradientMaxOutput->value(); + + m_minOutput->setValue(m_histoSegments - val); + m_hGradientMinOutput->setValue( val ); + m_levels->setLevelLowOutputValue(m_channelCB->currentItem(), m_histoSegments - val); + blockSignals(false); + slotTimer(); +} + +void AdjustLevelDialog::slotAdjustMaxOutputSpinBox(int val) +{ + blockSignals(true); + + if ( val > m_hGradientMinOutput->value() ) + val = m_hGradientMinOutput->value(); + + m_maxOutput->setValue(m_histoSegments - val); + m_hGradientMaxOutput->setValue( val ); + m_levels->setLevelHighOutputValue(m_channelCB->currentItem(), m_histoSegments - val); + blockSignals(false); + slotTimer(); +} + +void AdjustLevelDialog::slotAdjustSliders() +{ + adjustSliders(m_minInput->value(), m_gammaInput->value(), + m_maxInput->value(), m_minOutput->value(), + m_maxOutput->value()); +} + +void AdjustLevelDialog::adjustSliders(int minIn, double gamIn, int maxIn, int minOut, int maxOut) +{ + m_hGradientMinInput->setValue(m_histoSegments - minIn); + m_hGradientMaxInput->setValue(m_histoSegments - maxIn); + m_gammaInput->setValue(gamIn); + m_hGradientMinOutput->setValue(m_histoSegments - minOut); + m_hGradientMaxOutput->setValue(m_histoSegments - maxOut); +} + +void AdjustLevelDialog::slotResetCurrentChannel() +{ + m_levels->levelsChannelReset(m_channelCB->currentItem()); + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); + m_levelsHistogramWidget->reset(); + + slotEffect(); + m_histogramWidget->reset(); +} + +void AdjustLevelDialog::slotAutoLevels() +{ + // Calculate Auto levels. + m_levels->levelsAuto(m_levelsHistogramWidget->m_imageHistogram); + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); + + slotEffect(); +} + +void AdjustLevelDialog::slotEffect() +{ + Digikam::ImageIface* iface = m_previewWidget->imageIface(); + uchar *orgData = iface->getPreviewImage(); + int w = iface->previewWidth(); + int h = iface->previewHeight(); + bool sb = iface->previewSixteenBit(); + + // Create the new empty destination image data space. + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + m_destinationPreviewData = new uchar[w*h*(sb ? 8 : 4)]; + + // Calculate the LUT to apply on the image. + m_levels->levelsLutSetup(Digikam::ImageHistogram::AlphaChannel); + + // Apply the lut to the image. + m_levels->levelsLutProcess(orgData, m_destinationPreviewData, w, h); + + iface->putPreviewImage(m_destinationPreviewData); + m_previewWidget->updatePreview(); + + // Update histogram. + m_histogramWidget->updateData(m_destinationPreviewData, w, h, sb, 0, 0, 0, false); + + delete [] orgData; +} + +void AdjustLevelDialog::finalRendering() +{ + kapp->setOverrideCursor( KCursor::waitCursor() ); + Digikam::ImageIface* iface = m_previewWidget->imageIface(); + uchar *orgData = iface->getOriginalImage(); + int w = iface->originalWidth(); + int h = iface->originalHeight(); + bool sb = iface->originalSixteenBit(); + + // Create the new empty destination image data space. + uchar* desData = new uchar[w*h*(sb ? 8 : 4)]; + + // Calculate the LUT to apply on the image. + m_levels->levelsLutSetup(Digikam::ImageHistogram::AlphaChannel); + + // Apply the lut to the image. + m_levels->levelsLutProcess(orgData, desData, w, h); + + iface->putOriginalImage(i18n("Adjust Level"), desData); + kapp->restoreOverrideCursor(); + + delete [] orgData; + delete [] desData; + accept(); +} + +void AdjustLevelDialog::slotChannelChanged(int channel) +{ + switch(channel) + { + case LuminosityChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::ValueHistogram; + m_levelsHistogramWidget->m_channelType = Digikam::HistogramWidget::ValueHistogram; + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "white" ) ); + break; + + case RedChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::RedChannelHistogram; + m_levelsHistogramWidget->m_channelType = Digikam::HistogramWidget::RedChannelHistogram; + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "red" ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "red" ) ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "red" ) ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "red" ) ); + break; + + case GreenChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::GreenChannelHistogram; + m_levelsHistogramWidget->m_channelType = Digikam::HistogramWidget::GreenChannelHistogram; + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "green" ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "green" ) ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "green" ) ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "green" ) ); + break; + + case BlueChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::BlueChannelHistogram; + m_levelsHistogramWidget->m_channelType = Digikam::HistogramWidget::BlueChannelHistogram; + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "blue" ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "blue" ) ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "blue" ) ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "blue" ) ); + break; + + case AlphaChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::AlphaChannelHistogram; + m_levelsHistogramWidget->m_channelType = Digikam::HistogramWidget::AlphaChannelHistogram; + m_hGradientMinInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMaxInput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMinOutput->setColors( QColor( "black" ), QColor( "white" ) ); + m_hGradientMaxOutput->setColors( QColor( "black" ), QColor( "white" ) ); + break; + } + + adjustSliders(m_levels->getLevelLowInputValue(channel), + m_levels->getLevelGammaValue(channel), + m_levels->getLevelHighInputValue(channel), + m_levels->getLevelLowOutputValue(channel), + m_levels->getLevelHighOutputValue(channel)); + + m_levelsHistogramWidget->repaint(false); + m_histogramWidget->repaint(false); +} + +void AdjustLevelDialog::slotScaleChanged(int scale) +{ + m_levelsHistogramWidget->m_scaleType = scale; + m_histogramWidget->m_scaleType = scale; + m_histogramWidget->repaint(false); + m_levelsHistogramWidget->repaint(false); +} + +void AdjustLevelDialog::readUserSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("adjustlevels Tool Dialog"); + + m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity. + m_scaleBG->setButton(config->readNumEntry("Histogram Scale", Digikam::HistogramWidget::LogScaleHistogram)); + + for (int i = 0 ; i < 5 ; i++) + { + bool sb = m_originalImage.sixteenBit(); + int max = sb ? 65535 : 255; + double gamma = config->readDoubleNumEntry(QString("GammaChannel%1").arg(i), 1.0); + int lowInput = config->readNumEntry(QString("LowInputChannel%1").arg(i), 0); + int lowOutput = config->readNumEntry(QString("LowOutputChannel%1").arg(i), 0); + int highInput = config->readNumEntry(QString("HighInputChannel%1").arg(i), max); + int highOutput = config->readNumEntry(QString("HighOutputChannel%1").arg(i), max); + + m_levels->setLevelGammaValue(i, gamma); + m_levels->setLevelLowInputValue(i, sb ? lowInput*255 : lowInput); + m_levels->setLevelHighInputValue(i, sb ? highInput*255 : highInput); + m_levels->setLevelLowOutputValue(i, sb ? lowOutput*255 : lowOutput); + m_levels->setLevelHighOutputValue(i, sb ? highOutput*255 : highOutput); + } + + m_levelsHistogramWidget->reset(); + m_histogramWidget->reset(); + slotChannelChanged(m_channelCB->currentItem()); + slotScaleChanged(m_scaleBG->selectedId()); + + // This is mandatory here to set spinbox values because slot connections + // can be not set completely at plugin startup. + m_minInput->setValue(m_levels->getLevelLowInputValue(m_channelCB->currentItem())); + m_minOutput->setValue(m_levels->getLevelLowOutputValue(m_channelCB->currentItem())); + m_maxInput->setValue(m_levels->getLevelHighInputValue(m_channelCB->currentItem())); + m_maxOutput->setValue(m_levels->getLevelHighOutputValue(m_channelCB->currentItem())); +} + +void AdjustLevelDialog::writeUserSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("adjustlevels Tool Dialog"); + config->writeEntry("Histogram Channel", m_channelCB->currentItem()); + config->writeEntry("Histogram Scale", m_scaleBG->selectedId()); + + for (int i = 0 ; i < 5 ; i++) + { + bool sb = m_originalImage.sixteenBit(); + double gamma = m_levels->getLevelGammaValue(i); + int lowInput = m_levels->getLevelLowInputValue(i); + int lowOutput = m_levels->getLevelLowOutputValue(i); + int highInput = m_levels->getLevelHighInputValue(i); + int highOutput = m_levels->getLevelHighOutputValue(i); + + config->writeEntry(QString("GammaChannel%1").arg(i), gamma); + config->writeEntry(QString("LowInputChannel%1").arg(i), sb ? lowInput/255 : lowInput); + config->writeEntry(QString("LowOutputChannel%1").arg(i), sb ? lowOutput/255 : lowOutput); + config->writeEntry(QString("HighInputChannel%1").arg(i), sb ? highInput/255 : highInput); + config->writeEntry(QString("HighOutputChannel%1").arg(i), sb ? highOutput/255 : highOutput); + } + + config->sync(); +} + +void AdjustLevelDialog::resetValues() +{ + for (int channel = 0 ; channel < 5 ; ++channel) + m_levels->levelsChannelReset(channel); + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); + m_levelsHistogramWidget->reset(); + m_histogramWidget->reset(); +} + +// Load all settings. +void AdjustLevelDialog::slotUser3() +{ + KURL loadLevelsFile; + + loadLevelsFile = KFileDialog::getOpenURL(KGlobalSettings::documentPath(), + QString( "*" ), this, + QString( i18n("Select Gimp Levels File to Load")) ); + if( loadLevelsFile.isEmpty() ) + return; + + if ( m_levels->loadLevelsFromGimpLevelsFile( loadLevelsFile ) == false ) + { + KMessageBox::error(this, i18n("Cannot load from the Gimp levels text file.")); + return; + } + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); +} + +// Save all settings. +void AdjustLevelDialog::slotUser2() +{ + KURL saveLevelsFile; + + saveLevelsFile = KFileDialog::getSaveURL(KGlobalSettings::documentPath(), + QString( "*" ), this, + QString( i18n("Gimp Levels File to Save")) ); + if( saveLevelsFile.isEmpty() ) + return; + + if ( m_levels->saveLevelsToGimpLevelsFile( saveLevelsFile ) == false ) + { + KMessageBox::error(this, i18n("Cannot save to the Gimp levels text file.")); + return; + } + + // Refresh the current levels config. + slotChannelChanged(m_channelCB->currentItem()); +} + +// See B.K.O #146636: use event filter with all level slider to display a +// guide over level histogram. +bool AdjustLevelDialog::eventFilter(QObject *obj, QEvent *ev) +{ + if ( obj == m_hGradientMinInput ) + { + if ( ev->type() == QEvent::MouseButtonPress) + { + connect(m_minInput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + return false; + } + if ( ev->type() == QEvent::MouseButtonRelease) + { + disconnect(m_minInput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + m_levelsHistogramWidget->reset(); + return false; + } + else + { + return false; + } + } + if ( obj == m_hGradientMaxInput ) + { + if ( ev->type() == QEvent::MouseButtonPress) + { + connect(m_maxInput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + return false; + } + if ( ev->type() == QEvent::MouseButtonRelease) + { + disconnect(m_maxInput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + m_levelsHistogramWidget->reset(); + return false; + } + else + { + return false; + } + } + if ( obj == m_hGradientMinOutput ) + { + if ( ev->type() == QEvent::MouseButtonPress) + { + connect(m_minOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + return false; + } + if ( ev->type() == QEvent::MouseButtonRelease) + { + disconnect(m_minOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + m_levelsHistogramWidget->reset(); + return false; + } + else + { + return false; + } + } + if ( obj == m_hGradientMaxOutput ) + { + if ( ev->type() == QEvent::MouseButtonPress) + { + connect(m_maxOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + return false; + } + if ( ev->type() == QEvent::MouseButtonRelease) + { + disconnect(m_maxOutput, SIGNAL(valueChanged(int)), + this, SLOT(slotShowHistogramGuide(int))); + + m_levelsHistogramWidget->reset(); + return false; + } + else + { + return false; + } + } + else + { + // pass the event on to the parent class + return KDialogBase::eventFilter(obj, ev); + } +} + +void AdjustLevelDialog::slotShowHistogramGuide(int v) +{ + Digikam::DColor color(v, v, v, v, m_originalImage.sixteenBit()); + m_levelsHistogramWidget->setHistogramGuideByColor(color); +} + +} // NameSpace DigikamAdjustLevelsImagesPlugin |