/* ============================================================ * * 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 * Copyright (C) 2005-2007 by Gilles Caulier * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include // KDE includes. #include #include #include #include #include #include // 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("

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("

Select the histogram channel to display here:

" "Luminosity: display the image's luminosity values.

" "Red: display the red image-channel values.

" "Green: display the green image-channel values.

" "Blue: display the blue image-channel values.

")); m_scaleBG = new TQHButtonGroup(gboxSettings); m_scaleBG->setExclusive(true); m_scaleBG->setFrameShape(TQFrame::NoFrame); m_scaleBG->setInsideMargin( 0 ); TQWhatsThis::add( m_scaleBG, i18n("

Select the histogram scale here.

" "If the image's maximal counts are small, you can use the linear scale.

" "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( "

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( "

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("

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("

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("

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("

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