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Diffstat (limited to 'src/imageplugins/coreplugin/imageeffect_bcg.cpp')
| -rw-r--r-- | src/imageplugins/coreplugin/imageeffect_bcg.cpp | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/src/imageplugins/coreplugin/imageeffect_bcg.cpp b/src/imageplugins/coreplugin/imageeffect_bcg.cpp new file mode 100644 index 00000000..9d21115d --- /dev/null +++ b/src/imageplugins/coreplugin/imageeffect_bcg.cpp @@ -0,0 +1,350 @@ +/* ============================================================ + * + * This file is a part of digiKam project + * http://www.digikam.org + * + * Date : 2004-06-05 + * Description : digiKam image editor to adjust Brightness, + Contrast, and Gamma of picture. + * + * Copyright (C) 2004 by Renchi Raju <renchi@pooh.tam.uiuc.edu> + * Copyright (C) 2005-2007 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. + * + * ============================================================ */ + +// TQt includes. + +#include <tqcolor.h> +#include <tqgroupbox.h> +#include <tqhgroupbox.h> +#include <tqvgroupbox.h> +#include <tqhbuttongroup.h> +#include <tqlabel.h> +#include <tqvbox.h> +#include <tqlayout.h> +#include <tqframe.h> +#include <tqlabel.h> +#include <tqpushbutton.h> +#include <tqcheckbox.h> +#include <tqcombobox.h> +#include <tqwhatsthis.h> +#include <tqtooltip.h> + +// KDE includes. + +#include <knuminput.h> +#include <tdelocale.h> +#include <tdeapplication.h> +#include <tdeconfig.h> +#include <kcursor.h> +#include <kstandarddirs.h> + +// Digikam includes. + +#include "imageiface.h" +#include "imagewidget.h" +#include "histogramwidget.h" +#include "colorgradientwidget.h" +#include "bcgmodifier.h" +#include "dimg.h" + +// Local includes. + +#include "imageeffect_bcg.h" +#include "imageeffect_bcg.moc" + +namespace DigikamImagesPluginCore +{ + +ImageEffect_BCG::ImageEffect_BCG(TQWidget* parent) + : Digikam::ImageDlgBase(parent, i18n("Brightness Contrast Gamma Adjustments"), + "bcgadjust", false) +{ + m_destinationPreviewData = 0L; + setHelp("bcgadjusttool.anchor", "digikam"); + + m_previewWidget = new Digikam::ImageWidget("bcgadjust Tool Dialog", plainPage(), + i18n("<p>Here you can see the image " + "brightness-contrast-gamma adjustments preview. " + "You can pick color on image " + "to see the color level corresponding on histogram.")); + setPreviewAreaWidget(m_previewWidget); + + // ------------------------------------------------------------- + + TQWidget *gboxSettings = new TQWidget(plainPage()); + TQGridLayout* gridSettings = new TQGridLayout( gboxSettings, 9, 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 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.")); + + 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); + + gridSettings->addMultiCellLayout(l1, 0, 0, 0, 4); + + // ------------------------------------------------------------- + + 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 drawing " + "of the selected image channel. This one is re-computed at any " + "settings 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" ) ); + + gridSettings->addMultiCellWidget(histoBox, 1, 2, 0, 4); + + // ------------------------------------------------------------- + + TQLabel *label2 = new TQLabel(i18n("Brightness:"), gboxSettings); + m_bInput = new KIntNumInput(gboxSettings); + m_bInput->setRange(-100, 100, 1, true); + m_bInput->setValue(0); + TQWhatsThis::add( m_bInput, i18n("<p>Set here the brightness adjustment of the image.")); + gridSettings->addMultiCellWidget(label2, 3, 3, 0, 4); + gridSettings->addMultiCellWidget(m_bInput, 4, 4, 0, 4); + + TQLabel *label3 = new TQLabel(i18n("Contrast:"), gboxSettings); + m_cInput = new KIntNumInput(gboxSettings); + m_cInput->setRange(-100, 100, 1, true); + m_cInput->setValue(0); + TQWhatsThis::add( m_cInput, i18n("<p>Set here the contrast adjustment of the image.")); + gridSettings->addMultiCellWidget(label3, 5, 5, 0, 4); + gridSettings->addMultiCellWidget(m_cInput, 6, 6, 0, 4); + + TQLabel *label4 = new TQLabel(i18n("Gamma:"), gboxSettings); + m_gInput = new KDoubleNumInput(gboxSettings); + m_gInput->setPrecision(2); + m_gInput->setRange(0.1, 3.0, 0.01, true); + m_gInput->setValue(1.0); + TQWhatsThis::add( m_gInput, i18n("<p>Set here the gamma adjustment of the image.")); + gridSettings->addMultiCellWidget(label4, 7, 7, 0, 4); + gridSettings->addMultiCellWidget(m_gInput, 8, 8, 0, 4); + + gridSettings->setRowStretch(9, 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_bInput, TQ_SIGNAL(valueChanged(int)), + this, TQ_SLOT(slotTimer())); + + connect(m_cInput, TQ_SIGNAL(valueChanged(int)), + this, TQ_SLOT(slotTimer())); + + connect(m_gInput, TQ_SIGNAL(valueChanged(double)), + this, TQ_SLOT(slotTimer())); + + connect(m_previewWidget, TQ_SIGNAL(signalResized()), + this, TQ_SLOT(slotEffect())); + + // ------------------------------------------------------------- + + enableButtonOK( false ); +} + +ImageEffect_BCG::~ImageEffect_BCG() +{ + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + delete m_histogramWidget; + delete m_previewWidget; +} + +void ImageEffect_BCG::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_BCG::slotScaleChanged(int scale) +{ + m_histogramWidget->m_scaleType = scale; + m_histogramWidget->repaint(false); +} + +void ImageEffect_BCG::slotColorSelectedFromTarget( const Digikam::DColor &color ) +{ + m_histogramWidget->setHistogramGuideByColor(color); +} + +void ImageEffect_BCG::readUserSettings() +{ + TDEConfig* config = kapp->config(); + config->setGroup("bcgadjust Tool Dialog"); + m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity. + m_scaleBG->setButton(config->readNumEntry("Histogram Scale", Digikam::HistogramWidget::LogScaleHistogram)); + m_bInput->setValue(config->readNumEntry("BrightnessAjustment", 0)); + m_cInput->setValue(config->readNumEntry("ContrastAjustment", 0)); + m_gInput->setValue(config->readDoubleNumEntry("GammaAjustment", 1.0)); + slotChannelChanged(m_channelCB->currentItem()); + slotScaleChanged(m_scaleBG->selectedId()); +} + +void ImageEffect_BCG::writeUserSettings() +{ + TDEConfig* config = kapp->config(); + config->setGroup("bcgadjust Tool Dialog"); + config->writeEntry("Histogram Channel", m_channelCB->currentItem()); + config->writeEntry("Histogram Scale", m_scaleBG->selectedId()); + config->writeEntry("BrightnessAjustment", m_bInput->value()); + config->writeEntry("ContrastAjustment", m_cInput->value()); + config->writeEntry("GammaAjustment", m_gInput->value()); + config->sync(); +} + +void ImageEffect_BCG::resetValues() +{ + m_bInput->blockSignals(true); + m_cInput->blockSignals(true); + m_gInput->blockSignals(true); + m_bInput->setValue(0); + m_cInput->setValue(0); + m_gInput->setValue(1.0); + m_bInput->blockSignals(false); + m_cInput->blockSignals(false); + m_gInput->blockSignals(false); +} + +void ImageEffect_BCG::slotEffect() +{ + kapp->setOverrideCursor( KCursor::waitCursor() ); + + double b = (double)m_bInput->value()/250.0; + double c = (double)(m_cInput->value()/100.0) + 1.00; + double g = m_gInput->value(); + + enableButtonOK( b != 0.0 || c != 1.0 || g != 1.0 ); + + 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 a = iface->previewHasAlpha(); + bool sb = iface->previewSixteenBit(); + + Digikam::DImg preview(w, h, sb, a, m_destinationPreviewData); + Digikam::BCGModifier cmod; + cmod.setGamma(g); + cmod.setBrightness(b); + cmod.setContrast(c); + cmod.applyBCG(preview); + iface->putPreviewImage(preview.bits()); + + m_previewWidget->updatePreview(); + + // Update histogram. + + memcpy(m_destinationPreviewData, preview.bits(), preview.numBytes()); + m_histogramWidget->updateData(m_destinationPreviewData, w, h, sb, 0, 0, 0, false); + + kapp->restoreOverrideCursor(); +} + +void ImageEffect_BCG::finalRendering() +{ + kapp->setOverrideCursor( KCursor::waitCursor() ); + Digikam::ImageIface* iface = m_previewWidget->imageIface(); + + double b = (double)m_bInput->value()/250.0; + double c = (double)(m_cInput->value()/100.0) + 1.00; + double g = m_gInput->value(); + + iface->setOriginalBCG(b, c, g); + kapp->restoreOverrideCursor(); + accept(); +} + +} // NameSpace DigikamImagesPluginCore + |