Rename 'digikam' folder to 'src'

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit ee0d99607c14cb63d3ebdb3a970b508949fa8219)

1 files changed, 842 insertions, 0 deletions

diff --git a/src/imageplugins/whitebalance/imageeffect_whitebalance.cpp b/src/imageplugins/whitebalance/imageeffect_whitebalance.cpp
new file mode 100644
index 00000000..f72609dd
--- /dev/null
+++ b/src/imageplugins/whitebalance/imageeffect_whitebalance.cpp
@@ -0,0 +1,842 @@
+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2005-03-11
+ * Description : a digiKam image editor plugin to correct 
+ *               image white balance 
+ * 
+ * Copyright (C) 2005-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ * Copyright (C) 2008 by Guillaume Castagnino <casta at xwing dot info>
+ * 
+ * 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 <tqhgroupbox.h>
+#include <tqvgroupbox.h>
+#include <tqlabel.h>
+#include <tqpushbutton.h>
+#include <tqhbuttongroup.h> 
+#include <tqwhatsthis.h>
+#include <tqlayout.h>
+#include <tqframe.h>
+#include <tqcombobox.h>
+#include <tqtimer.h>
+#include <tqtooltip.h>
+#include <tqpixmap.h>
+#include <tqfile.h>
+#include <tqtextstream.h>
+#include <tqvbox.h>
+
+// KDE includes.
+
+#include <kcursor.h>
+#include <tdelocale.h>
+#include <tdeaboutdata.h>
+#include <khelpmenu.h>
+#include <kiconloader.h>
+#include <tdeapplication.h>
+#include <tdepopupmenu.h>
+#include <kstandarddirs.h>
+#include <kprogress.h>
+#include <tdemessagebox.h>
+#include <knuminput.h>
+#include <tdeglobalsettings.h>
+#include <tdefiledialog.h>
+#include <kseparator.h>
+#include <tdeconfig.h>
+#include <kactivelabel.h>
+
+// Local includes.
+
+#include "version.h"
+#include "ddebug.h"
+#include "dimg.h"
+#include "dcolor.h"
+#include "imageiface.h"
+#include "imagewidget.h"
+#include "imagehistogram.h"
+#include "whitebalance.h"
+#include "colorgradientwidget.h"
+#include "histogramwidget.h"
+#include "dimgimagefilters.h"
+#include "imageeffect_whitebalance.h"
+#include "imageeffect_whitebalance.moc"
+
+namespace DigikamWhiteBalanceImagesPlugin
+{
+
+ImageEffect_WhiteBalance::ImageEffect_WhiteBalance(TQWidget* parent)
+                        : Digikam::ImageDlgBase(parent, i18n("White Color Balance Correction"), 
+                                                "whitebalance", true, false)
+{
+    TQString whatsThis;
+
+    Digikam::ImageIface iface(0, 0);
+
+    m_destinationPreviewData = 0L;
+
+    // About data and help button.
+
+    TDEAboutData* about = new TDEAboutData("digikam",
+                                       I18N_NOOP("White Color Balance Correction"), 
+                                       digikam_version,
+                                       I18N_NOOP("A digiKam image plugin to correct white color balance."),
+                                       TDEAboutData::License_GPL,
+                                       "(c) 2005-2008, Gilles Caulier", 
+                                       0,
+                                       "http://wwww.digikam.org");
+
+    about->addAuthor("Gilles Caulier", I18N_NOOP("Author and maintainer"),
+                     "caulier dot gilles at gmail dot com");
+
+    about->addAuthor("Pawel T. Jochym", I18N_NOOP("White color balance correction algorithm"),
+                     "jochym at ifj edu pl");
+
+    setAboutData(about);
+
+    // -------------------------------------------------------------
+
+    m_previewWidget = new Digikam::ImageWidget("whitebalance Tool Dialog", plainPage(),
+                                               i18n("<p>You can see here the image's white-balance "
+                                                    "adjustments preview. You can pick color on image to "
+                                                    "see the color level corresponding on histogram."));
+    setPreviewAreaWidget(m_previewWidget); 
+
+    // -------------------------------------------------------------
+
+    TQWidget *gboxSettings = new TQWidget(plainPage());
+    TQVBoxLayout* layout2  = new TQVBoxLayout( gboxSettings, spacingHint() );
+    TQGridLayout *grid     = new TQGridLayout( layout2, 2, 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);
+
+    grid->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 filter 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" ) );
+
+    grid->addMultiCellWidget(histoBox, 1, 2, 0, 4);
+    
+    // -------------------------------------------------------------
+
+    TQGridLayout *grid2 = new TQGridLayout(layout2, 13, 5, spacingHint());
+
+    m_temperatureLabel    = new KActiveLabel(i18n("<qt><a href='http://en.wikipedia.org/wiki/Color_temperature'>Color Temperature</a> "
+                                                  " (K): </qt>"), gboxSettings);
+    m_adjTemperatureLabel = new TQLabel(i18n("Adjustment:"), gboxSettings);
+    m_temperatureInput    = new KDoubleNumInput(gboxSettings);
+    m_temperatureInput->setPrecision(1);
+    m_temperatureInput->setRange(2000.0, 12000.0, 10.0, true);
+    TQWhatsThis::add( m_temperatureInput, i18n("<p>Set here the white balance color temperature in Kelvin."));
+    
+    m_temperaturePresetLabel = new TQLabel(i18n("Preset:"), gboxSettings);
+    m_temperaturePresetCB = new TQComboBox( false, gboxSettings );
+    m_temperaturePresetCB->insertItem( i18n("Candle") );
+    m_temperaturePresetCB->insertItem( i18n("40W Lamp") );
+    m_temperaturePresetCB->insertItem( i18n("100W Lamp") );
+    m_temperaturePresetCB->insertItem( i18n("200W Lamp") );
+    m_temperaturePresetCB->insertItem( i18n("Sunrise") );
+    m_temperaturePresetCB->insertItem( i18n("Studio Lamp") );
+    m_temperaturePresetCB->insertItem( i18n("Moonlight") );
+    m_temperaturePresetCB->insertItem( i18n("Neutral") );
+    m_temperaturePresetCB->insertItem( i18n("Daylight D50") );
+    m_temperaturePresetCB->insertItem( i18n("Photo Flash") );
+    m_temperaturePresetCB->insertItem( i18n("Sun") );
+    m_temperaturePresetCB->insertItem( i18n("Xenon Lamp") );
+    m_temperaturePresetCB->insertItem( i18n("Daylight D65") );
+    m_temperaturePresetCB->insertItem( i18n("None") );
+    TQWhatsThis::add( m_temperaturePresetCB, i18n("<p>Select the white balance color temperature "
+                                                 "preset to use here:<p>"
+                                                 "<b>Candle</b>: candle light (1850K).<p>"
+                                                 "<b>40W Lamp</b>: 40 Watt incandescent lamp (2680K).<p>"
+                                                 "<b>100W Lamp</b>: 100 Watt incandescent lamp (2800K).<p>"
+                                                 "<b>200W Lamp</b>: 200 Watt incandescent lamp (3000K).<p>"
+                                                 "<b>Sunrise</b>: sunrise or sunset light (3200K).<p>"
+                                                 "<b>Studio Lamp</b>: tungsten lamp used in photo studio "
+                                                 "or light at 1 hour from dusk/dawn (3400K).<p>"
+                                                 "<b>Moonlight</b>: moon light (4100K).<p>"
+                                                 "<b>Neutral</b>: neutral color temperature (4750K).<p>"
+                                                 "<b>Daylight D50</b>: sunny daylight around noon (5000K).<p>"
+                                                 "<b>Photo Flash</b>: electronic photo flash (5500K).<p>"
+                                                 "<b>Sun</b>: effective sun temperature (5770K).<p>"
+                                                 "<b>Xenon Lamp</b>: xenon lamp or light arc (6420K).<p>"
+                                                 "<b>Daylight D65</b>: overcast sky light (6500K).<p>"
+                                                 "<b>None</b>: no preset value."));
+    m_pickTemperature = new TQPushButton(gboxSettings);
+    TDEGlobal::dirs()->addResourceType("color-picker-grey", TDEGlobal::dirs()->kde_default("data") + "digikam/data");
+    directory = TDEGlobal::dirs()->findResourceDir("color-picker-grey", "color-picker-grey.png");
+    m_pickTemperature->setPixmap( TQPixmap( directory + "color-picker-grey.png" ) );
+    m_pickTemperature->setToggleButton(true);
+    TQToolTip::add( m_pickTemperature, i18n( "Temperature tone color picker." ) );
+    TQWhatsThis::add( m_pickTemperature, i18n("<p>With this button, you can pick the color from original "
+                                             "image used to set white color balance temperature and "
+                                             "green component."));
+
+    KSeparator *line = new KSeparator(Horizontal, gboxSettings);
+
+    // -------------------------------------------------------------
+    
+    m_blackLabel = new TQLabel(i18n("Black point:"), gboxSettings);
+    m_blackInput = new KDoubleNumInput(gboxSettings);
+    m_blackInput->setPrecision(2);
+    m_blackInput->setRange(0.0, 0.05, 0.01, true);
+    TQWhatsThis::add( m_blackInput, i18n("<p>Set here the black level value."));
+        
+    m_darkLabel = new TQLabel(i18n("Shadows:"), gboxSettings);
+    m_darkInput = new KDoubleNumInput(gboxSettings);
+    m_darkInput->setPrecision(2);
+    m_darkInput->setRange(0.0, 1.0, 0.01, true);
+    TQWhatsThis::add( m_darkInput, i18n("<p>Set here the shadows noise suppresion level."));
+
+    m_saturationLabel = new TQLabel(i18n("Saturation:"), gboxSettings);
+    m_saturationInput = new KDoubleNumInput(gboxSettings);
+    m_saturationInput->setPrecision(2);
+    m_saturationInput->setRange(0.0, 2.0, 0.01, true);
+    TQWhatsThis::add( m_saturationInput, i18n("<p>Set here the saturation value."));
+        
+    m_gammaLabel = new TQLabel(i18n("Gamma:"), gboxSettings);
+    m_gammaInput = new KDoubleNumInput(gboxSettings);
+    m_gammaInput->setPrecision(2);
+    m_gammaInput->setRange(0.1, 3.0, 0.01, true);
+    TQWhatsThis::add( m_gammaInput, i18n("<p>Set here the gamma correction value."));
+
+    m_greenLabel = new TQLabel(i18n("Green:"), gboxSettings);
+    m_greenInput = new KDoubleNumInput(gboxSettings);
+    m_greenInput->setPrecision(2);
+    m_greenInput->setRange(0.2, 2.5, 0.01, true);
+    TQWhatsThis::add(m_greenInput, i18n("<p>Set here the green component to set magenta color "
+                                       "cast removal level."));
+
+    KSeparator *line2 = new KSeparator(Horizontal, gboxSettings);
+
+    // -------------------------------------------------------------
+
+    m_exposureLabel      = new KActiveLabel(i18n("<qt><a href='http://en.wikipedia.org/wiki/Exposure_value'>Exposure Compensation</a> "
+                                                 " (E.V): </qt>"), gboxSettings);
+    m_mainExposureLabel  = new TQLabel(i18n("Main:"), gboxSettings);
+    m_autoAdjustExposure = new TQPushButton(gboxSettings);
+    m_autoAdjustExposure->setPixmap(kapp->iconLoader()->loadIcon("system-run", (TDEIcon::Group)TDEIcon::Toolbar));
+    TQToolTip::add( m_autoAdjustExposure, i18n( "Auto exposure adjustments" ) );
+    TQWhatsThis::add( m_autoAdjustExposure, i18n("<p>With this button, you can automatically adjust Exposure "
+                                                "and Black Point values."));
+    m_mainExposureInput = new KDoubleNumInput(gboxSettings);
+    m_mainExposureInput->setPrecision(2);
+    m_mainExposureInput->setRange(-6.0, 8.0, 0.1, true);
+    TQWhatsThis::add( m_mainExposureInput, i18n("<p>Set here the main exposure compensation value in E.V."));
+
+    m_fineExposureLabel = new TQLabel(i18n("Fine:"), gboxSettings);
+    m_fineExposureInput = new KDoubleNumInput(gboxSettings);
+    m_fineExposureInput->setPrecision(2);
+    m_fineExposureInput->setRange(-0.5, 0.5, 0.01, true);
+    TQWhatsThis::add( m_fineExposureInput, i18n("<p>This value in E.V will be added to main exposure "
+                                               "compensation value to set fine exposure adjustment."));
+
+    // -------------------------------------------------------------
+
+    grid2->addMultiCellWidget(m_temperatureLabel, 0, 0, 0, 5);
+    grid2->addMultiCellWidget(m_adjTemperatureLabel, 1, 1, 0, 0);
+    grid2->addMultiCellWidget(m_pickTemperature, 1, 1, 1, 1);
+    grid2->addMultiCellWidget(m_temperatureInput, 1, 1, 2, 5);
+    grid2->addMultiCellWidget(m_temperaturePresetLabel, 2, 2, 0, 0);
+    grid2->addMultiCellWidget(m_temperaturePresetCB, 2, 2, 2, 5);
+    
+    grid2->addMultiCellWidget(line, 3, 3, 0, 5);
+    
+    grid2->addMultiCellWidget(m_blackLabel, 4, 4, 0, 0);
+    grid2->addMultiCellWidget(m_blackInput, 4, 4, 1, 5);
+    grid2->addMultiCellWidget(m_darkLabel, 5, 5, 0, 0);
+    grid2->addMultiCellWidget(m_darkInput, 5, 5, 1, 5);
+    grid2->addMultiCellWidget(m_saturationLabel, 6, 6, 0, 0);
+    grid2->addMultiCellWidget(m_saturationInput, 6, 6, 1, 5);
+    grid2->addMultiCellWidget(m_gammaLabel, 7, 7, 0, 0);
+    grid2->addMultiCellWidget(m_gammaInput, 7, 7, 1, 5);
+    grid2->addMultiCellWidget(m_greenLabel, 8, 8, 0, 0);
+    grid2->addMultiCellWidget(m_greenInput, 8, 8, 1, 5);
+
+    grid2->addMultiCellWidget(line2, 9, 9, 0, 5);
+
+    grid2->addMultiCellWidget(m_exposureLabel, 10, 10, 0, 5);
+    grid2->addMultiCellWidget(m_mainExposureLabel, 11, 11, 0, 0);
+    grid2->addMultiCellWidget(m_autoAdjustExposure, 11, 11, 1, 1);
+    grid2->addMultiCellWidget(m_mainExposureInput, 11, 11, 2, 5);
+    grid2->addMultiCellWidget(m_fineExposureLabel, 12, 12, 0, 1);
+    grid2->addMultiCellWidget(m_fineExposureInput, 12, 12, 2, 5);
+    grid2->setRowStretch(13, 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(spotPositionChangedFromOriginal( const Digikam::DColor &, const TQPoint & )),
+            this, TQ_SLOT(slotColorSelectedFromOriginal( const Digikam::DColor & )));
+
+    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()));                                        
+
+    // -------------------------------------------------------------                
+    // Correction Filter Slider controls.
+                        
+    connect(m_temperaturePresetCB, TQ_SIGNAL(activated(int)),
+            this, TQ_SLOT(slotTemperaturePresetChanged(int)));
+    
+    connect(m_temperatureInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTemperatureChanged(double)));                       
+            
+    connect(m_darkInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                       
+    
+    connect(m_blackInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                       
+    
+    connect(m_mainExposureInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                       
+
+    connect(m_fineExposureInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                       
+    
+    connect(m_gammaInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                       
+
+    connect(m_saturationInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                         
+
+    connect(m_greenInput, TQ_SIGNAL(valueChanged (double)),
+            this, TQ_SLOT(slotTimer()));                 
+
+    // -------------------------------------------------------------
+    // Bouttons slots.
+    
+    connect(m_autoAdjustExposure, TQ_SIGNAL(clicked()),
+            this, TQ_SLOT(slotAutoAdjustExposure()));
+
+    connect(m_pickTemperature, TQ_SIGNAL(released()),
+            this, TQ_SLOT(slotPickerColorButtonActived()));            
+}
+
+ImageEffect_WhiteBalance::~ImageEffect_WhiteBalance()
+{
+    m_histogramWidget->stopHistogramComputation();
+
+    if (m_destinationPreviewData) 
+       delete [] m_destinationPreviewData;
+       
+    delete m_histogramWidget;
+}
+
+void ImageEffect_WhiteBalance::slotTemperatureChanged(double temperature)
+{
+   switch((uint)temperature)
+   {
+       case 1850:
+          m_temperaturePresetCB->setCurrentItem(Candle);
+          break;
+
+       case 2680:
+          m_temperaturePresetCB->setCurrentItem(Lamp40W);
+          break;
+
+       case 2800:
+          m_temperaturePresetCB->setCurrentItem(Lamp100W);
+          break;
+       
+       case 3000:
+          m_temperaturePresetCB->setCurrentItem(Lamp200W);
+          break;
+       
+       case 3200:
+          m_temperaturePresetCB->setCurrentItem(Sunrise);
+          break;
+       
+       case 3400:
+          m_temperaturePresetCB->setCurrentItem(StudioLamp);
+          break;
+
+       case 4100:
+          m_temperaturePresetCB->setCurrentItem(MoonLight);
+          break;
+
+       case 4750:
+          m_temperaturePresetCB->setCurrentItem(Neutral);
+          break;
+                 
+       case 5000:
+          m_temperaturePresetCB->setCurrentItem(DaylightD50);
+          break;
+       
+       case 5500:
+          m_temperaturePresetCB->setCurrentItem(Flash);
+          break;
+       
+       case 5770:
+          m_temperaturePresetCB->setCurrentItem(Sun);
+          break;
+       
+       case 6420:
+          m_temperaturePresetCB->setCurrentItem(XeonLamp);
+          break;
+
+       case 6500:
+          m_temperaturePresetCB->setCurrentItem(DaylightD65);
+          break;
+          
+       default:
+          m_temperaturePresetCB->setCurrentItem(None);
+          break;
+    }
+
+    slotTimer();  
+}
+
+void ImageEffect_WhiteBalance::slotTemperaturePresetChanged(int tempPreset)
+{
+   switch(tempPreset)
+   {
+       case Candle:
+          m_temperatureInput->setValue(1850.0);
+          break;
+
+       case Lamp40W:
+          m_temperatureInput->setValue(2680.0);
+          break;
+
+       case Lamp100W:
+          m_temperatureInput->setValue(2800.0);
+          break;
+       
+       case Lamp200W:
+          m_temperatureInput->setValue(3000.0);
+          break;
+       
+       case Sunrise:
+          m_temperatureInput->setValue(3200.0);
+          break;
+       
+       case StudioLamp:
+          m_temperatureInput->setValue(3400.0);
+          break;
+
+       case MoonLight:
+          m_temperatureInput->setValue(4100.0);
+          break;
+
+       case Neutral:
+          m_temperatureInput->setValue(4750.0);
+          break;
+                 
+       case DaylightD50:
+          m_temperatureInput->setValue(5000.0);
+          break;
+       
+       case Flash:
+          m_temperatureInput->setValue(5500.0);
+          break;
+       
+       case Sun:
+          m_temperatureInput->setValue(5770.0);
+          break;
+       
+       case XeonLamp:
+          m_temperatureInput->setValue(6420.0);
+          break;
+
+       case DaylightD65:
+          m_temperatureInput->setValue(6500.0);
+          break;
+       
+       default:    // None.
+          break;
+    }
+
+    slotEffect();  
+}
+
+void ImageEffect_WhiteBalance::slotPickerColorButtonActived()
+{
+    // Save previous rendering mode and toggle to original image.
+    m_currentPreviewMode = m_previewWidget->getRenderingPreviewMode();
+    m_previewWidget->setRenderingPreviewMode(Digikam::ImageGuideWidget::PreviewOriginalImage);
+}
+
+void ImageEffect_WhiteBalance::slotColorSelectedFromOriginal(const Digikam::DColor &color)
+{
+    if ( m_pickTemperature->isOn() )
+    {
+        Digikam::DColor dc = color;
+        TQColor tc = dc.getTQColor();
+        double temperatureLevel, greenLevel;
+    
+        Digikam::WhiteBalance::autoWBAdjustementFromColor(tc, temperatureLevel, greenLevel);
+            
+        m_temperatureInput->setValue(temperatureLevel);
+        m_greenInput->setValue(greenLevel);
+        m_pickTemperature->setOn(false);
+    }
+    else
+        return;
+       
+    // restore previous rendering mode.
+    m_previewWidget->setRenderingPreviewMode(m_currentPreviewMode);
+    
+    slotEffect();  
+}
+
+void ImageEffect_WhiteBalance::slotColorSelectedFromTarget( const Digikam::DColor &color )
+{
+    m_histogramWidget->setHistogramGuideByColor(color);
+}
+
+void ImageEffect_WhiteBalance::slotScaleChanged(int scale)
+{
+    m_histogramWidget->m_scaleType = scale;
+    m_histogramWidget->repaint(false);
+}
+
+void ImageEffect_WhiteBalance::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_WhiteBalance::slotAutoAdjustExposure()
+{
+    parentWidget()->setCursor( KCursor::waitCursor() );
+
+    Digikam::ImageIface* iface = m_previewWidget->imageIface();
+    uchar *data                = iface->getOriginalImage();
+    int width                  = iface->originalWidth();
+    int height                 = iface->originalHeight();
+    bool sb                    = iface->originalSixteenBit();
+    
+    double blackLevel;
+    double exposureLevel;
+
+    Digikam::WhiteBalance::autoExposureAdjustement(data, width, height, sb, blackLevel, exposureLevel);
+    delete [] data;        
+
+    m_blackInput->setValue(blackLevel);
+    m_mainExposureInput->setValue(exposureLevel);
+    m_fineExposureInput->setValue(0.0);
+    
+    parentWidget()->unsetCursor();
+    slotEffect();  
+}
+
+void ImageEffect_WhiteBalance::slotEffect()
+{
+    Digikam::ImageIface* iface = m_previewWidget->imageIface();
+    uchar *data                = 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)];
+
+    double temperature  = m_temperatureInput->value();
+    double dark         = m_darkInput->value();
+    double black        = m_blackInput->value();
+    double mainExposure = m_mainExposureInput->value();
+    double fineExposure = m_fineExposureInput->value();
+    double gamma        = m_gammaInput->value();
+    double saturation   = m_saturationInput->value();
+    double green        = m_greenInput->value();
+            
+    Digikam::WhiteBalance wbFilter(sb);
+    wbFilter.whiteBalance(data, w, h, sb, 
+                          black, mainExposure + fineExposure,
+                          temperature, green, dark, 
+                          gamma, saturation);
+     
+    iface->putPreviewImage(data);
+    m_previewWidget->updatePreview();
+    
+    // Update histogram.
+    memcpy (m_destinationPreviewData, data, w*h*(sb ? 8 : 4));
+    m_histogramWidget->updateData(m_destinationPreviewData, w, h, sb, 0, 0, 0, false);
+    delete [] data;
+}
+
+void ImageEffect_WhiteBalance::finalRendering()
+{
+    kapp->setOverrideCursor( KCursor::waitCursor() );
+    Digikam::ImageIface* iface = m_previewWidget->imageIface();
+    uchar *data                = iface->getOriginalImage();
+    int w                      = iface->originalWidth();
+    int h                      = iface->originalHeight();
+    bool sb                    = iface->originalSixteenBit();
+
+    double temperature  = m_temperatureInput->value();
+    double dark         = m_darkInput->value();
+    double black        = m_blackInput->value();
+    double mainExposure = m_mainExposureInput->value();
+    double fineExposure = m_fineExposureInput->value();
+    double gamma        = m_gammaInput->value();
+    double saturation   = m_saturationInput->value();
+    double green        = m_greenInput->value();
+            
+    Digikam::WhiteBalance wbFilter(sb);
+    wbFilter.whiteBalance(data, w, h, sb, 
+                          black, mainExposure + fineExposure,
+                          temperature, green, dark, 
+                          gamma, saturation);
+
+    iface->putOriginalImage(i18n("White Balance"), data);
+    delete [] data;
+    kapp->restoreOverrideCursor();
+    accept();       
+}
+
+void ImageEffect_WhiteBalance::resetValues()
+{
+    m_darkInput->blockSignals(true);
+    m_blackInput->blockSignals(true);
+    m_mainExposureInput->blockSignals(true);
+    m_fineExposureInput->blockSignals(true);
+    m_gammaInput->blockSignals(true);
+    m_saturationInput->blockSignals(true);  
+    m_greenInput->blockSignals(true);
+    m_temperaturePresetCB->blockSignals(true);
+    
+    // Neutral color temperature settings is D65
+    m_darkInput->setValue(0.5);
+    m_blackInput->setValue(0.0);
+    m_mainExposureInput->setValue(0.0);
+    m_fineExposureInput->setValue(0.0);
+    m_gammaInput->setValue(1.0);  
+    m_saturationInput->setValue(1.0);  
+    m_greenInput->setValue(1.0);
+    m_temperaturePresetCB->setCurrentItem(DaylightD65);
+    slotTemperaturePresetChanged(DaylightD65);
+    
+    m_previewWidget->resetSpotPosition();    
+    m_channelCB->setCurrentItem(LuminosityChannel);
+    slotChannelChanged(LuminosityChannel);
+    
+    m_histogramWidget->reset();
+    
+    m_darkInput->blockSignals(false);
+    m_blackInput->blockSignals(false);
+    m_mainExposureInput->blockSignals(false);
+    m_fineExposureInput->blockSignals(false);
+    m_gammaInput->blockSignals(false);
+    m_saturationInput->blockSignals(false);  
+    m_greenInput->blockSignals(false);
+    m_temperaturePresetCB->blockSignals(false);
+    slotEffect();  
+} 
+
+void ImageEffect_WhiteBalance::readUserSettings()
+{
+    TDEConfig* config = kapp->config();
+    config->setGroup("whitebalance Tool Dialog");
+    m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0));    // Luminosity.
+    m_scaleBG->setButton(config->readNumEntry("Histogram Scale", Digikam::HistogramWidget::LogScaleHistogram));
+
+    m_darkInput->setValue(config->readDoubleNumEntry("Dark", 0.5));
+    m_blackInput->setValue(config->readDoubleNumEntry("Black", 0.0));
+    m_mainExposureInput->setValue(config->readDoubleNumEntry("MainExposure", 0.0));
+    m_fineExposureInput->setValue(config->readDoubleNumEntry("FineExposure", 0.0));
+    m_gammaInput->setValue(config->readDoubleNumEntry("Gamma", 1.0));  
+    m_saturationInput->setValue(config->readDoubleNumEntry("Saturation", 1.0));  
+    m_greenInput->setValue(config->readDoubleNumEntry("Green", 1.0));  
+    m_temperatureInput->setValue(config->readDoubleNumEntry("Temperature", 6500.0));
+    slotTemperatureChanged(m_temperatureInput->value());
+    slotChannelChanged(m_channelCB->currentItem());
+    slotScaleChanged(m_scaleBG->selectedId());
+}
+
+void ImageEffect_WhiteBalance::writeUserSettings()
+{
+    TDEConfig* config = kapp->config();
+    config->setGroup("whitebalance Tool Dialog");
+    config->writeEntry("Histogram Channel", m_channelCB->currentItem());
+    config->writeEntry("Histogram Scale", m_scaleBG->selectedId());
+
+    config->writeEntry("Dark", m_darkInput->value());
+    config->writeEntry("Black", m_blackInput->value());
+    config->writeEntry("MainExposure", m_mainExposureInput->value());
+    config->writeEntry("FineExposure", m_fineExposureInput->value());
+    config->writeEntry("Gamma", m_gammaInput->value());
+    config->writeEntry("Saturation", m_saturationInput->value());
+    config->writeEntry("Green", m_greenInput->value());
+    config->writeEntry("Temperature", m_temperatureInput->value()); 
+    config->sync();
+}
+
+// Load all settings.
+void ImageEffect_WhiteBalance::slotUser3()
+{
+    KURL loadWhiteBalanceFile = KFileDialog::getOpenURL(TDEGlobalSettings::documentPath(),
+                                             TQString( "*" ), this,
+                                             TQString( i18n("White Color Balance Settings File to Load")) );
+    if( loadWhiteBalanceFile.isEmpty() )
+       return;
+
+    TQFile file(loadWhiteBalanceFile.path());
+    
+    if ( file.open(IO_ReadOnly) )   
+    {
+        TQTextStream stream( &file );
+
+        if ( stream.readLine() != "# White Color Balance Configuration File V2" )
+        {
+           KMessageBox::error(this, 
+                        i18n("\"%1\" is not a White Color Balance settings text file.")
+                        .arg(loadWhiteBalanceFile.fileName()));
+           file.close();            
+           return;
+        }
+        
+        blockSignals(true);
+        m_temperatureInput->setValue( stream.readLine().toDouble() );
+        m_darkInput->setValue( stream.readLine().toDouble() );
+        m_blackInput->setValue( stream.readLine().toDouble() );
+        m_mainExposureInput->setValue( stream.readLine().toDouble() );
+        m_fineExposureInput->setValue( stream.readLine().toDouble() );
+        m_gammaInput->setValue( stream.readLine().toDouble() );
+        m_saturationInput->setValue( stream.readLine().toDouble() );
+        m_greenInput->setValue( stream.readLine().toDouble() );
+        m_histogramWidget->reset();
+        blockSignals(false);
+        slotEffect();  
+    }
+    else
+        KMessageBox::error(this, i18n("Cannot load settings from the White Color Balance text file."));
+
+    file.close();            
+}
+
+// Save all settings.
+void ImageEffect_WhiteBalance::slotUser2()
+{
+    KURL saveWhiteBalanceFile = KFileDialog::getSaveURL(TDEGlobalSettings::documentPath(),
+                                             TQString( "*" ), this,
+                                             TQString( i18n("White Color Balance Settings File to Save")) );
+    if( saveWhiteBalanceFile.isEmpty() )
+       return;
+
+    TQFile file(saveWhiteBalanceFile.path());
+    
+    if ( file.open(IO_WriteOnly) )   
+    {
+        TQTextStream stream( &file );        
+        stream << "# White Color Balance Configuration File V2\n";    
+        stream << m_temperatureInput->value() << "\n";    
+        stream << m_darkInput->value() << "\n";    
+        stream << m_blackInput->value() << "\n";    
+        stream << m_mainExposureInput->value() << "\n";    
+        stream << m_fineExposureInput->value() << "\n";    
+        stream << m_gammaInput->value() << "\n";    
+        stream << m_saturationInput->value() << "\n";    
+        stream << m_greenInput->value() << "\n";    
+    }
+    else
+        KMessageBox::error(this, i18n("Cannot save settings to the White Color Balance text file."));
+    
+    file.close();        
+}
+
+}  // NameSpace DigikamWhiteBalanceImagesPlugin
+