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Diffstat (limited to 'digikam/imageplugins/coreplugin/imageeffect_rgb.cpp')
| -rw-r--r-- | digikam/imageplugins/coreplugin/imageeffect_rgb.cpp | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/digikam/imageplugins/coreplugin/imageeffect_rgb.cpp b/digikam/imageplugins/coreplugin/imageeffect_rgb.cpp new file mode 100644 index 0000000..6101134 --- /dev/null +++ b/digikam/imageplugins/coreplugin/imageeffect_rgb.cpp @@ -0,0 +1,419 @@ +/* ============================================================ + * + * This file is a part of digiKam project + * http://www.digikam.org + * + * Date : 2004-07-11 + * Description : digiKam image editor Color Balance tool. + * + * Copyright (C) 2004-2007 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. + * + * ============================================================ */ + +// Qt includes. + +#include <qspinbox.h> +#include <qslider.h> +#include <qcolor.h> +#include <qgroupbox.h> +#include <qhgroupbox.h> +#include <qvgroupbox.h> +#include <qhbuttongroup.h> +#include <qlabel.h> +#include <qlayout.h> +#include <qframe.h> +#include <qvbox.h> +#include <qlabel.h> +#include <qpushbutton.h> +#include <qcheckbox.h> +#include <qcombobox.h> +#include <qwhatsthis.h> +#include <qtooltip.h> + +// KDE includes. + +#include <kconfig.h> +#include <klocale.h> +#include <kapplication.h> +#include <kcursor.h> +#include <kstandarddirs.h> + +// Digikam includes. + +#include "imageiface.h" +#include "imagewidget.h" +#include "histogramwidget.h" +#include "colorgradientwidget.h" +#include "colormodifier.h" +#include "dimg.h" + +// Local includes. + +#include "imageeffect_rgb.h" +#include "imageeffect_rgb.moc" + +namespace DigikamImagesPluginCore +{ + +ImageEffect_RGB::ImageEffect_RGB(QWidget* parent) + : Digikam::ImageDlgBase(parent, i18n("Color Balance"), "colorbalance", false) +{ + m_destinationPreviewData = 0L; + setHelp("colorbalancetool.anchor", "digikam"); + + m_previewWidget = new Digikam::ImageWidget("colorbalance Tool Dialog", plainPage(), + i18n("<p>Here you can see the image " + "color-balance adjustments preview. " + "You can pick color on image " + "to see the color level corresponding on histogram.")); + setPreviewAreaWidget(m_previewWidget); + + // ------------------------------------------------------------- + + QWidget *gboxSettings = new QWidget(plainPage()); + QGridLayout* gridSettings = new QGridLayout( gboxSettings, 7, 4, spacingHint()); + + 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") ); + QWhatsThis::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 QHButtonGroup(gboxSettings); + m_scaleBG->setExclusive(true); + m_scaleBG->setFrameShape(QFrame::NoFrame); + m_scaleBG->setInsideMargin( 0 ); + QWhatsThis::add( m_scaleBG, i18n("<p>Select the histogram scale here.<p>" + "If the image's maximal counts are small, you can use the linear scale.<p>" + "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); + + gridSettings->addMultiCellLayout(l1, 0, 0, 0, 4); + + // ------------------------------------------------------------- + + QVBox *histoBox = new QVBox(gboxSettings); + m_histogramWidget = new Digikam::HistogramWidget(256, 140, histoBox, 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 " + "settings changes.")); + QLabel *space = new QLabel(histoBox); + space->setFixedHeight(1); + m_hGradient = new Digikam::ColorGradientWidget( Digikam::ColorGradientWidget::Horizontal, 10, histoBox ); + m_hGradient->setColors( QColor( "black" ), QColor( "white" ) ); + + gridSettings->addMultiCellWidget(histoBox, 1, 2, 0, 4); + + // ------------------------------------------------------------- + + QLabel *labelLeft = new QLabel(i18n("Cyan"), gboxSettings); + labelLeft->setAlignment ( Qt::AlignRight | Qt::AlignVCenter ); + m_rSlider = new QSlider(-100, 100, 1, 0, Qt::Horizontal, gboxSettings, "m_rSlider"); + m_rSlider->setTickmarks(QSlider::Below); + m_rSlider->setTickInterval(20); + QWhatsThis::add( m_rSlider, i18n("<p>Set here the cyan/red color adjustment of the image.")); + QLabel *labelRight = new QLabel(i18n("Red"), gboxSettings); + labelRight->setAlignment ( Qt::AlignLeft | Qt::AlignVCenter ); + m_rInput = new QSpinBox(-100, 100, 1, gboxSettings, "m_rInput"); + + gridSettings->addMultiCellWidget(labelLeft, 3, 3, 0, 0); + gridSettings->addMultiCellWidget(m_rSlider, 3, 3, 1, 1); + gridSettings->addMultiCellWidget(labelRight, 3, 3, 2, 2); + gridSettings->addMultiCellWidget(m_rInput, 3, 3, 3, 3); + + // ------------------------------------------------------------- + + labelLeft = new QLabel(i18n("Magenta"), gboxSettings); + labelLeft->setAlignment ( Qt::AlignRight | Qt::AlignVCenter ); + m_gSlider = new QSlider(-100, 100, 1, 0, Qt::Horizontal, gboxSettings, "m_gSlider"); + m_gSlider->setTickmarks(QSlider::Below); + m_gSlider->setTickInterval(20); + QWhatsThis::add( m_gSlider, i18n("<p>Set here the magenta/green color adjustment of the image.")); + labelRight = new QLabel(i18n("Green"), gboxSettings); + labelRight->setAlignment ( Qt::AlignLeft | Qt::AlignVCenter ); + m_gInput = new QSpinBox(-100, 100, 1, gboxSettings, "m_gInput"); + + gridSettings->addMultiCellWidget(labelLeft, 4, 4, 0, 0); + gridSettings->addMultiCellWidget(m_gSlider, 4, 4, 1, 1); + gridSettings->addMultiCellWidget(labelRight, 4, 4, 2, 2); + gridSettings->addMultiCellWidget(m_gInput, 4, 4, 3, 3); + + // ------------------------------------------------------------- + + labelLeft = new QLabel(i18n("Yellow"), gboxSettings); + labelLeft->setAlignment ( Qt::AlignRight | Qt::AlignVCenter ); + m_bSlider = new QSlider(-100, 100, 1, 0, Qt::Horizontal, gboxSettings, "m_bSlider"); + m_bSlider->setTickmarks(QSlider::Below); + m_bSlider->setTickInterval(20); + QWhatsThis::add( m_bSlider, i18n("<p>Set here the yellow/blue color adjustment of the image.")); + labelRight = new QLabel(i18n("Blue"), gboxSettings); + labelRight->setAlignment ( Qt::AlignLeft | Qt::AlignVCenter ); + m_bInput = new QSpinBox(-100, 100, 1, gboxSettings, "m_bInput"); + + gridSettings->addMultiCellWidget(labelLeft, 5, 5, 0, 0); + gridSettings->addMultiCellWidget(m_bSlider, 5, 5, 1, 1); + gridSettings->addMultiCellWidget(labelRight, 5, 5, 2, 2); + gridSettings->addMultiCellWidget(m_bInput, 5, 5, 3, 3); + + m_rInput->setValue(0); + m_gInput->setValue(0); + m_bInput->setValue(0); + + gridSettings->setRowStretch(6, 10); + setUserAreaWidget(gboxSettings); + + // ------------------------------------------------------------- + + connect(m_channelCB, SIGNAL(activated(int)), + this, SLOT(slotChannelChanged(int))); + + connect(m_scaleBG, SIGNAL(released(int)), + this, SLOT(slotScaleChanged(int))); + + connect(m_previewWidget, SIGNAL(spotPositionChangedFromTarget( const Digikam::DColor &, const QPoint & )), + this, SLOT(slotColorSelectedFromTarget( const Digikam::DColor & ))); + + connect(m_rSlider, SIGNAL(valueChanged(int)), + m_rInput, SLOT(setValue(int))); + connect(m_rInput, SIGNAL(valueChanged (int)), + m_rSlider, SLOT(setValue(int))); + connect(m_rInput, SIGNAL(valueChanged (int)), + this, SLOT(slotTimer())); + + connect(m_gSlider, SIGNAL(valueChanged(int)), + m_gInput, SLOT(setValue(int))); + connect(m_gInput, SIGNAL(valueChanged (int)), + m_gSlider, SLOT(setValue(int))); + connect(m_gInput, SIGNAL(valueChanged (int)), + this, SLOT(slotTimer())); + + connect(m_bSlider, SIGNAL(valueChanged(int)), + m_bInput, SLOT(setValue(int))); + connect(m_bInput, SIGNAL(valueChanged (int)), + m_bSlider, SLOT(setValue(int))); + connect(m_bInput, SIGNAL(valueChanged (int)), + this, SLOT(slotTimer())); + + connect(m_previewWidget, SIGNAL(signalResized()), + this, SLOT(slotEffect())); + + // ------------------------------------------------------------- + + enableButtonOK( false ); +} + +ImageEffect_RGB::~ImageEffect_RGB() +{ + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + delete m_histogramWidget; + delete m_previewWidget; +} + +void ImageEffect_RGB::slotChannelChanged(int channel) +{ + switch(channel) + { + case LuminosityChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::ValueHistogram; + m_hGradient->setColors( QColor( "black" ), QColor( "white" ) ); + break; + + case RedChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::RedChannelHistogram; + m_hGradient->setColors( QColor( "black" ), QColor( "red" ) ); + break; + + case GreenChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::GreenChannelHistogram; + m_hGradient->setColors( QColor( "black" ), QColor( "green" ) ); + break; + + case BlueChannel: + m_histogramWidget->m_channelType = Digikam::HistogramWidget::BlueChannelHistogram; + m_hGradient->setColors( QColor( "black" ), QColor( "blue" ) ); + break; + } + + m_histogramWidget->repaint(false); +} + +void ImageEffect_RGB::slotScaleChanged(int scale) +{ + m_histogramWidget->m_scaleType = scale; + m_histogramWidget->repaint(false); +} + +void ImageEffect_RGB::slotColorSelectedFromTarget( const Digikam::DColor &color ) +{ + m_histogramWidget->setHistogramGuideByColor(color); +} + +void ImageEffect_RGB::readUserSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("colorbalance Tool Dialog"); + m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity. + m_scaleBG->setButton(config->readNumEntry("Histogram Scale", Digikam::HistogramWidget::LogScaleHistogram)); + int r = config->readNumEntry("RedAjustment", 0); + int g = config->readNumEntry("GreenAjustment", 0); + int b = config->readNumEntry("BlueAjustment", 0); + adjustSliders(r, g, b); + slotChannelChanged(m_channelCB->currentItem()); + slotScaleChanged(m_scaleBG->selectedId()); +} + +void ImageEffect_RGB::writeUserSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("colorbalance Tool Dialog"); + config->writeEntry("Histogram Channel", m_channelCB->currentItem()); + config->writeEntry("Histogram Scale", m_scaleBG->selectedId()); + config->writeEntry("RedAjustment", m_rSlider->value()); + config->writeEntry("GreenAjustment", m_gInput->value()); + config->writeEntry("BlueAjustment", m_bInput->value()); + config->sync(); +} + +void ImageEffect_RGB::resetValues() +{ + adjustSliders(0, 0, 0); +} + +void ImageEffect_RGB::adjustSliders(int r, int g, int b) +{ + m_rSlider->blockSignals(true); + m_gSlider->blockSignals(true); + m_bSlider->blockSignals(true); + m_rInput->blockSignals(true); + m_gInput->blockSignals(true); + m_bInput->blockSignals(true); + + m_rSlider->setValue(r); + m_gSlider->setValue(g); + m_bSlider->setValue(b); + m_rInput->setValue(r); + m_gInput->setValue(g); + m_bInput->setValue(b); + + m_rSlider->blockSignals(false); + m_gSlider->blockSignals(false); + m_bSlider->blockSignals(false); + m_rInput->blockSignals(false); + m_gInput->blockSignals(false); + m_bInput->blockSignals(false); + + slotEffect(); +} + +void ImageEffect_RGB::slotEffect() +{ + kapp->setOverrideCursor( KCursor::waitCursor() ); + + enableButtonOK(m_rInput->value() != 0 || + m_gInput->value() != 0 || + m_bInput->value() != 0); + + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + Digikam::ImageIface* iface = m_previewWidget->imageIface(); + m_destinationPreviewData = iface->getPreviewImage(); + int w = iface->previewWidth(); + int h = iface->previewHeight(); + bool alpha = iface->previewHasAlpha(); + bool sixteenBit = iface->previewSixteenBit(); + + double r = ((double)m_rInput->value() + 100.0)/100.0; + double g = ((double)m_gInput->value() + 100.0)/100.0; + double b = ((double)m_bInput->value() + 100.0)/100.0; + double a = 1.0; + + Digikam::DImg preview(w, h, sixteenBit, alpha, m_destinationPreviewData); + Digikam::ColorModifier cmod; + cmod.applyColorModifier(preview, r, g, b, a); + iface->putPreviewImage(preview.bits()); + + m_previewWidget->updatePreview(); + + // Update histogram. + + memcpy(m_destinationPreviewData, preview.bits(), preview.numBytes()); + m_histogramWidget->updateData(m_destinationPreviewData, w, h, sixteenBit, 0, 0, 0, false); + + kapp->restoreOverrideCursor(); +} + +void ImageEffect_RGB::finalRendering() +{ + kapp->setOverrideCursor( KCursor::waitCursor() ); + + double r = ((double)m_rInput->value() + 100.0)/100.0; + double g = ((double)m_gInput->value() + 100.0)/100.0; + double b = ((double)m_bInput->value() + 100.0)/100.0; + double a = 1.0; + + Digikam::ImageIface* iface = m_previewWidget->imageIface(); + uchar *data = iface->getOriginalImage(); + int w = iface->originalWidth(); + int h = iface->originalHeight(); + bool alpha = iface->originalHasAlpha(); + bool sixteenBit = iface->originalSixteenBit(); + Digikam::DImg original(w, h, sixteenBit, alpha, data); + delete [] data; + + Digikam::ColorModifier cmod; + cmod.applyColorModifier(original, r, g, b, a); + + iface->putOriginalImage(i18n("Color Balance"), original.bits()); + kapp->restoreOverrideCursor(); + accept(); +} + +} // NameSpace DigikamImagesPluginCore + |