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digikam/digikam/libs/imageproperties/imagepropertiescolorstab.cpp

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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-11-17
* Description : a tab to display colors information of images
*
* 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 <qspinbox.h>
#include <qcombobox.h>
#include <qlabel.h>
#include <qwhatsthis.h>
#include <qgroupbox.h>
#include <qhbuttongroup.h>
#include <qpushbutton.h>
#include <qtooltip.h>
#include <qvbox.h>
#include <qscrollview.h>
// KDE includes.
#include <klocale.h>
#include <ksqueezedtextlabel.h>
#include <kapplication.h>
#include <kconfig.h>
#include <kdialogbase.h>
#include <kstandarddirs.h>
#include <ktabwidget.h>
// Local includes.
#include "ddebug.h"
#include "dimg.h"
#include "imagehistogram.h"
#include "histogramwidget.h"
#include "colorgradientwidget.h"
#include "navigatebarwidget.h"
#include "sharedloadsavethread.h"
#include "iccprofilewidget.h"
#include "cietonguewidget.h"
#include "imagepropertiescolorstab.h"
#include "imagepropertiescolorstab.moc"
namespace Digikam
{
class ImagePropertiesColorsTabPriv
{
public:
enum MetadataTab
{
HISTOGRAM=0,
ICCPROFILE
};
ImagePropertiesColorsTabPriv()
{
imageLoaderThread = 0;
tab = 0;
channelCB = 0;
colorsCB = 0;
renderingCB = 0;
scaleBG = 0;
regionBG = 0;
minInterv = 0;
maxInterv = 0;
labelMeanValue = 0;
labelPixelsValue = 0;
labelStdDevValue = 0;
labelCountValue = 0;
labelMedianValue = 0;
labelPercentileValue = 0;
labelColorDepth = 0;
labelAlphaChannel = 0;
iccProfileWidget = 0;
hGradient = 0;
histogramWidget = 0;
imageLoaderThread = 0;
inLoadingProcess = false;
}
bool inLoadingProcess;
QComboBox *channelCB;
QComboBox *colorsCB;
QComboBox *renderingCB;
QHButtonGroup *scaleBG;
QHButtonGroup *regionBG;
QSpinBox *minInterv;
QSpinBox *maxInterv;
QLabel *labelMeanValue;
QLabel *labelPixelsValue;
QLabel *labelStdDevValue;
QLabel *labelCountValue;
QLabel *labelMedianValue;
QLabel *labelPercentileValue;
QLabel *labelColorDepth;
QLabel *labelAlphaChannel;
QString currentFilePath;
LoadingDescription currentLoadingDescription;
QRect selectionArea;
QByteArray embedded_profile;
KTabWidget *tab;
DImg image;
DImg imageSelection;
ICCProfileWidget *iccProfileWidget;
ColorGradientWidget *hGradient;
HistogramWidget *histogramWidget;
SharedLoadSaveThread *imageLoaderThread;
};
ImagePropertiesColorsTab::ImagePropertiesColorsTab(QWidget* parent, bool navBar)
: NavigateBarTab(parent)
{
d = new ImagePropertiesColorsTabPriv;
setupNavigateBar(navBar);
d->tab = new KTabWidget(this);
m_navigateBarLayout->addWidget(d->tab);
// Histogram tab area -----------------------------------------------------
QScrollView *sv = new QScrollView(d->tab);
sv->viewport()->setBackgroundMode(Qt::PaletteBackground);
sv->setResizePolicy(QScrollView::AutoOneFit);
sv->setFrameStyle(QFrame::NoFrame);
QWidget* histogramPage = new QWidget(sv->viewport());
QGridLayout *topLayout = new QGridLayout(histogramPage, 8, 3,
KDialog::spacingHint(), KDialog::spacingHint());
sv->addChild(histogramPage);
QLabel *label1 = new QLabel(i18n("Channel:"), histogramPage);
label1->setAlignment ( Qt::AlignRight | Qt::AlignVCenter );
d->channelCB = new QComboBox( false, histogramPage );
d->channelCB->insertItem( i18n("Luminosity") );
d->channelCB->insertItem( i18n("Red") );
d->channelCB->insertItem( i18n("Green") );
d->channelCB->insertItem( i18n("Blue") );
d->channelCB->insertItem( i18n("Alpha") );
d->channelCB->insertItem( i18n("Colors") );
QWhatsThis::add( d->channelCB, i18n("<p>Select the histogram channel to display here:<p>"
"<b>Luminosity</b>: Display luminosity (perceived brightness) values.<p>"
"<b>Red</b>: Display the red image channel.<p>"
"<b>Green</b>: Display the green image channel.<p>"
"<b>Blue</b>: Display the blue image channel.<p>"
"<b>Alpha</b>: Display the alpha image channel. "
"This channel corresponds to the transparency value and "
"is supported by some image formats such as PNG or TIFF.<p>"
"<b>Colors</b>: Display all color channel values at the same time."));
d->scaleBG = new QHButtonGroup(histogramPage);
d->scaleBG->setExclusive(true);
d->scaleBG->setFrameShape(QFrame::NoFrame);
d->scaleBG->setInsideMargin( 0 );
QWhatsThis::add( d->scaleBG, i18n("<p>Select the histogram scale here.<p>"
"If the image's maximal values are small, you can use the linear scale.<p>"
"Logarithmic scale can be used when the maximal values are big; "
"if it is used, all values (small and large) will be visible on the "
"graph."));
QPushButton *linHistoButton = new QPushButton( d->scaleBG );
QToolTip::add( linHistoButton, i18n( "<p>Linear" ) );
d->scaleBG->insert(linHistoButton, 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( d->scaleBG );
QToolTip::add( logHistoButton, i18n( "<p>Logarithmic" ) );
d->scaleBG->insert(logHistoButton, 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);
QLabel *label10 = new QLabel(i18n("Colors:"), histogramPage);
label10->setAlignment ( Qt::AlignRight | Qt::AlignVCenter );
d->colorsCB = new QComboBox( false, histogramPage );
d->colorsCB->insertItem( i18n("Red") );
d->colorsCB->insertItem( i18n("Green") );
d->colorsCB->insertItem( i18n("Blue") );
d->colorsCB->setEnabled( false );
QWhatsThis::add( d->colorsCB, i18n("<p>Select the main color displayed with Colors Channel mode here:<p>"
"<b>Red</b>: Draw the red image channel in the foreground.<p>"
"<b>Green</b>: Draw the green image channel in the foreground.<p>"
"<b>Blue</b>: Draw the blue image channel in the foreground.<p>"));
d->regionBG = new QHButtonGroup(histogramPage);
d->regionBG->setExclusive(true);
d->regionBG->setFrameShape(QFrame::NoFrame);
d->regionBG->setInsideMargin( 0 );
d->regionBG->hide();
QWhatsThis::add( d->regionBG, i18n("<p>Select from which region the histogram will be computed here:<p>"
"<b>Full Image</b>: Compute histogram using the full image.<p>"
"<b>Selection</b>: Compute histogram using the current image "
"selection."));
QPushButton *fullImageButton = new QPushButton( d->regionBG );
QToolTip::add( fullImageButton, i18n( "<p>Full Image" ) );
d->regionBG->insert(fullImageButton, HistogramWidget::FullImageHistogram);
KGlobal::dirs()->addResourceType("image-full", KGlobal::dirs()->kde_default("data") + "digikam/data");
directory = KGlobal::dirs()->findResourceDir("image-full", "image-full.png");
fullImageButton->setPixmap( QPixmap( directory + "image-full.png" ) );
fullImageButton->setToggleButton(true);
QPushButton *SelectionImageButton = new QPushButton( d->regionBG );
QToolTip::add( SelectionImageButton, i18n( "<p>Selection" ) );
d->regionBG->insert(SelectionImageButton, HistogramWidget::ImageSelectionHistogram);
KGlobal::dirs()->addResourceType("image-selection", KGlobal::dirs()->kde_default("data") + "digikam/data");
directory = KGlobal::dirs()->findResourceDir("image-selection", "image-selection.png");
SelectionImageButton->setPixmap( QPixmap( directory + "image-selection.png" ) );
SelectionImageButton->setToggleButton(true);
// -------------------------------------------------------------
QVBox *histoBox = new QVBox(histogramPage);
d->histogramWidget = new HistogramWidget(256, 140, histoBox);
QWhatsThis::add( d->histogramWidget, i18n("<p>This is the histogram drawing of the "
"selected image channel"));
QLabel *space = new QLabel(histoBox);
space->setFixedHeight(1);
d->hGradient = new ColorGradientWidget(ColorGradientWidget::Horizontal, 10, histoBox);
d->hGradient->setColors(QColor("black"), QColor("white"));
// -------------------------------------------------------------
QHBoxLayout *hlay2 = new QHBoxLayout(KDialog::spacingHint());
QLabel *label3 = new QLabel(i18n("Range:"), histogramPage);
label3->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->minInterv = new QSpinBox(0, 255, 1, histogramPage);
d->minInterv->setValue(0);
QWhatsThis::add(d->minInterv, i18n("<p>Select the minimal intensity "
"value of the histogram selection here."));
d->maxInterv = new QSpinBox(0, 255, 1, histogramPage);
d->maxInterv->setValue(255);
QWhatsThis::add(d->minInterv, i18n("<p>Select the maximal intensity value "
"of the histogram selection here."));
hlay2->addWidget(label3);
hlay2->addWidget(d->minInterv);
hlay2->addWidget(d->maxInterv);
// -------------------------------------------------------------
QGroupBox *gbox = new QGroupBox(2, Qt::Horizontal, i18n("Statistics"), histogramPage);
QWhatsThis::add( gbox, i18n("<p>Here you can see the statistical results calculated from the "
"selected histogram part. These values are available for all "
"channels."));
QLabel *label5 = new QLabel(i18n("Pixels:"), gbox);
label5->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelPixelsValue = new QLabel(gbox);
d->labelPixelsValue->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label7 = new QLabel(i18n("Count:"), gbox);
label7->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelCountValue = new QLabel(gbox);
d->labelCountValue->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label4 = new QLabel(i18n("Mean:"), gbox);
label4->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelMeanValue = new QLabel(gbox);
d->labelMeanValue->setAlignment (Qt::AlignRight | Qt::AlignVCenter);
QLabel *label6 = new QLabel(i18n("Std. deviation:"), gbox);
label6->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelStdDevValue = new QLabel(gbox);
d->labelStdDevValue->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label8 = new QLabel(i18n("Median:"), gbox);
label8->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelMedianValue = new QLabel(gbox);
d->labelMedianValue->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label9 = new QLabel(i18n("Percentile:"), gbox);
label9->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelPercentileValue = new QLabel(gbox);
d->labelPercentileValue->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label11 = new QLabel(i18n("Color depth:"), gbox);
label11->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelColorDepth = new QLabel(gbox);
d->labelColorDepth->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
QLabel *label12 = new QLabel(i18n("Alpha Channel:"), gbox);
label12->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
d->labelAlphaChannel = new QLabel(gbox);
d->labelAlphaChannel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
topLayout->addMultiCellWidget(label1, 1, 1, 0, 0);
topLayout->addMultiCellWidget(d->channelCB, 1, 1, 1, 1);
topLayout->addMultiCellWidget(d->scaleBG, 1, 1, 3, 3);
topLayout->addMultiCellWidget(label10, 2, 2, 0, 0);
topLayout->addMultiCellWidget(d->colorsCB, 2, 2, 1, 1);
topLayout->addMultiCellWidget(d->regionBG, 2, 2, 3, 3);
topLayout->addMultiCellWidget(histoBox, 3, 4, 0, 3);
topLayout->addMultiCellLayout(hlay2, 5, 5, 0, 3);
topLayout->addMultiCellWidget(gbox, 6, 6, 0, 3);
topLayout->setColStretch(2, 10);
topLayout->setRowStretch(7, 10);
d->tab->insertTab(sv, i18n("Histogram"), ImagePropertiesColorsTabPriv::HISTOGRAM );
// ICC Profiles tab area ---------------------------------------
QScrollView *sv2 = new QScrollView(d->tab);
sv2->viewport()->setBackgroundMode(Qt::PaletteBackground);
sv2->setResizePolicy(QScrollView::AutoOneFit);
sv2->setFrameStyle(QFrame::NoFrame);
d->iccProfileWidget = new ICCProfileWidget(sv2->viewport());
sv2->addChild(d->iccProfileWidget);
d->tab->insertTab(sv2, i18n("ICC profile"), ImagePropertiesColorsTabPriv::ICCPROFILE);
// -------------------------------------------------------------
connect(d->channelCB, SIGNAL(activated(int)),
this, SLOT(slotChannelChanged(int)));
connect(d->scaleBG, SIGNAL(released(int)),
this, SLOT(slotScaleChanged(int)));
connect(d->colorsCB, SIGNAL(activated(int)),
this, SLOT(slotColorsChanged(int)));
connect(d->regionBG, SIGNAL(released(int)),
this, SLOT(slotRenderingChanged(int)));
connect(d->histogramWidget, SIGNAL(signalIntervalChanged( int, int )),
this, SLOT(slotUpdateInterval(int, int)));
connect(d->histogramWidget, SIGNAL(signalMaximumValueChanged( int )),
this, SLOT(slotUpdateIntervRange(int)));
connect(d->histogramWidget, SIGNAL(signalHistogramComputationDone(bool)),
this, SLOT(slotRefreshOptions(bool)));
connect(d->histogramWidget, SIGNAL(signalHistogramComputationFailed(void)),
this, SLOT(slotHistogramComputationFailed(void)));
connect(d->minInterv, SIGNAL(valueChanged (int)),
this, SLOT(slotMinValueChanged(int)));
connect(d->maxInterv, SIGNAL(valueChanged (int)),
this, SLOT(slotMaxValueChanged(int)));
// -- read config ---------------------------------------------------------
KConfig* config = kapp->config();
config->setGroup("Image Properties SideBar");
d->tab->setCurrentPage(config->readNumEntry("ImagePropertiesColors Tab",
ImagePropertiesColorsTabPriv::HISTOGRAM));
d->iccProfileWidget->setMode(config->readNumEntry("ICC Level", ICCProfileWidget::SIMPLE));
d->iccProfileWidget->setCurrentItemByKey(config->readEntry("Current ICC Item", QString()));
d->channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity.
d->scaleBG->setButton(config->readNumEntry("Histogram Scale", HistogramWidget::LogScaleHistogram));
d->colorsCB->setCurrentItem(config->readNumEntry("Histogram Color", 0)); // Red.
d->regionBG->setButton(config->readNumEntry("Histogram Rendering", HistogramWidget::FullImageHistogram));
}
ImagePropertiesColorsTab::~ImagePropertiesColorsTab()
{
// If there is a currently histogram computation when dialog is closed,
// stop it before the d->image data are deleted automatically!
d->histogramWidget->stopHistogramComputation();
KConfig* config = kapp->config();
config->setGroup("Image Properties SideBar");
config->writeEntry("ImagePropertiesColors Tab", d->tab->currentPageIndex());
config->writeEntry("Histogram Channel", d->channelCB->currentItem());
config->writeEntry("Histogram Scale", d->scaleBG->selectedId());
config->writeEntry("Histogram Color", d->colorsCB->currentItem());
config->writeEntry("Histogram Rendering", d->regionBG->selectedId());
config->writeEntry("ICC Level", d->iccProfileWidget->getMode());
config->writeEntry("Current ICC Item", d->iccProfileWidget->getCurrentItemKey());
config->sync();
if (d->imageLoaderThread)
delete d->imageLoaderThread;
if (d->histogramWidget)
delete d->histogramWidget;
if (d->hGradient)
delete d->hGradient;
delete d;
}
void ImagePropertiesColorsTab::setData(const KURL& url, const QRect &selectionArea,
DImg *img)
{
// We might be getting duplicate events from AlbumIconView,
// which will cause all sorts of duplicate work.
// More importantly, while the loading thread can handle this pretty well,
// this will completely mess up the timing of progress info in the histogram widget.
// So filter here, before the stopHistogramComputation!
if (!img && url.path() == d->currentFilePath && d->inLoadingProcess)
return;
// This is necessary to stop computation because d->image.bits() is currently used by
// threaded histogram algorithm.
d->histogramWidget->stopHistogramComputation();
d->currentFilePath = QString();
d->currentLoadingDescription = LoadingDescription();
d->iccProfileWidget->loadFromURL(KURL());
// Clear information.
d->labelMeanValue->clear();
d->labelPixelsValue->clear();
d->labelStdDevValue->clear();
d->labelCountValue->clear();
d->labelMedianValue->clear();
d->labelPercentileValue->clear();
d->labelColorDepth->clear();
d->labelAlphaChannel->clear();
if (url.isEmpty())
{
setEnabled(false);
return;
}
d->selectionArea = selectionArea;
d->image.reset();
setEnabled(true);
if (!img)
{
loadImageFromUrl(url);
}
else
{
d->image = img->copy();
if ( !d->image.isNull() )
{
getICCData();
// If a selection area is done in Image Editor and if the current image is the same
// in Image Editor, then compute too the histogram for this selection.
if (d->selectionArea.isValid())
{
d->imageSelection = d->image.copy(d->selectionArea);
d->histogramWidget->updateData(d->image.bits(), d->image.width(), d->image.height(),
d->image.sixteenBit(), d->imageSelection.bits(),
d->imageSelection.width(), d->imageSelection.height());
d->regionBG->show();
updateInformations();
}
else
{
d->histogramWidget->updateData(d->image.bits(), d->image.width(),
d->image.height(), d->image.sixteenBit());
d->regionBG->hide();
updateInformations();
}
}
else
{
d->histogramWidget->setLoadingFailed();
d->iccProfileWidget->setLoadingFailed();
slotHistogramComputationFailed();
}
}
}
void ImagePropertiesColorsTab::loadImageFromUrl(const KURL& url)
{
// create thread on demand
if (!d->imageLoaderThread)
{
d->imageLoaderThread = new SharedLoadSaveThread();
connect(d->imageLoaderThread, SIGNAL(signalImageLoaded(const LoadingDescription &, const DImg&)),
this, SLOT(slotLoadImageFromUrlComplete(const LoadingDescription &, const DImg&)));
connect(d->imageLoaderThread, SIGNAL(signalMoreCompleteLoadingAvailable(const LoadingDescription &, const LoadingDescription &)),
this, SLOT(slotMoreCompleteLoadingAvailable(const LoadingDescription &, const LoadingDescription &)));
}
LoadingDescription desc = LoadingDescription(url.path());
if (DImg::fileFormat(desc.filePath) == DImg::RAW)
{
// use raw settings optimized for speed
DRawDecoding rawDecodingSettings = DRawDecoding();
rawDecodingSettings.optimizeTimeLoading();
desc = LoadingDescription(desc.filePath, rawDecodingSettings);
}
if (d->currentLoadingDescription.equalsOrBetterThan(desc))
return;
d->currentFilePath = desc.filePath;
d->currentLoadingDescription = desc;
d->inLoadingProcess = true;
d->imageLoaderThread->load(d->currentLoadingDescription,
SharedLoadSaveThread::AccessModeRead,
SharedLoadSaveThread::LoadingPolicyFirstRemovePrevious);
d->histogramWidget->setDataLoading();
d->iccProfileWidget->setDataLoading();
}
void ImagePropertiesColorsTab::slotLoadImageFromUrlComplete(const LoadingDescription &loadingDescription, const DImg& img)
{
// Discard any leftover messages from previous, possibly aborted loads
if ( !loadingDescription.equalsOrBetterThan(d->currentLoadingDescription) )
return;
if ( !img.isNull() )
{
d->histogramWidget->updateData(img.bits(), img.width(), img.height(), img.sixteenBit());
// As a safety precaution, this must be changed only after updateData is called,
// which stops computation because d->image.bits() is currently used by threaded histogram algorithm.
d->image = img;
d->regionBG->hide();
updateInformations();
getICCData();
}
else
{
d->histogramWidget->setLoadingFailed();
d->iccProfileWidget->setLoadingFailed();
slotHistogramComputationFailed();
}
d->inLoadingProcess = false;
}
void ImagePropertiesColorsTab::slotMoreCompleteLoadingAvailable(const LoadingDescription &oldLoadingDescription,
const LoadingDescription &newLoadingDescription)
{
if (oldLoadingDescription == d->currentLoadingDescription &&
newLoadingDescription.equalsOrBetterThan(d->currentLoadingDescription))
{
// Yes, we do want to stop our old time-optimized loading and chain to the current, more complete loading.
// Even the time-optimized raw loading takes significant time, and we must avoid two dcraw instances running
// at a time.
d->currentLoadingDescription = newLoadingDescription;
d->inLoadingProcess = true;
d->imageLoaderThread->load(newLoadingDescription,
SharedLoadSaveThread::AccessModeRead,
SharedLoadSaveThread::LoadingPolicyFirstRemovePrevious);
}
}
void ImagePropertiesColorsTab::setSelection(const QRect &selectionArea)
{
// This is necessary to stop computation because d->image.bits() is currently used by
// threaded histogram algorithm.
d->histogramWidget->stopHistogramComputation();
d->selectionArea = selectionArea;
if (d->selectionArea.isValid())
{
d->imageSelection = d->image.copy(d->selectionArea);
d->histogramWidget->updateSelectionData(d->imageSelection.bits(), d->imageSelection.width(),
d->imageSelection.height(), d->imageSelection.sixteenBit());
d->regionBG->show();
}
else
{
d->regionBG->hide();
slotRenderingChanged(HistogramWidget::FullImageHistogram);
}
}
void ImagePropertiesColorsTab::slotRefreshOptions(bool /*sixteenBit*/)
{
slotChannelChanged(d->channelCB->currentItem());
slotScaleChanged(d->scaleBG->selectedId());
slotColorsChanged(d->colorsCB->currentItem());
if (d->selectionArea.isValid())
slotRenderingChanged(d->regionBG->selectedId());
}
void ImagePropertiesColorsTab::slotHistogramComputationFailed()
{
d->imageSelection.reset();
d->image.reset();
}
void ImagePropertiesColorsTab::slotChannelChanged(int channel)
{
switch(channel)
{
case RedChannel:
d->histogramWidget->m_channelType = HistogramWidget::RedChannelHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "red" ) );
d->colorsCB->setEnabled(false);
break;
case GreenChannel:
d->histogramWidget->m_channelType = HistogramWidget::GreenChannelHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "green" ) );
d->colorsCB->setEnabled(false);
break;
case BlueChannel:
d->histogramWidget->m_channelType = HistogramWidget::BlueChannelHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "blue" ) );
d->colorsCB->setEnabled(false);
break;
case AlphaChannel:
d->histogramWidget->m_channelType = HistogramWidget::AlphaChannelHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "white" ) );
d->colorsCB->setEnabled(false);
break;
case ColorChannels:
d->histogramWidget->m_channelType = HistogramWidget::ColorChannelsHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "white" ) );
d->colorsCB->setEnabled(true);
break;
default: // Luminosity.
d->histogramWidget->m_channelType = HistogramWidget::ValueHistogram;
d->hGradient->setColors( QColor( "black" ), QColor( "white" ) );
d->colorsCB->setEnabled(false);
break;
}
d->histogramWidget->repaint(false);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotScaleChanged(int scale)
{
d->histogramWidget->m_scaleType = scale;
d->histogramWidget->repaint(false);
}
void ImagePropertiesColorsTab::slotColorsChanged(int color)
{
switch(color)
{
case AllColorsGreen:
d->histogramWidget->m_colorType = HistogramWidget::GreenColor;
break;
case AllColorsBlue:
d->histogramWidget->m_colorType = HistogramWidget::BlueColor;
break;
default: // Red.
d->histogramWidget->m_colorType = HistogramWidget::RedColor;
break;
}
d->histogramWidget->repaint(false);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotRenderingChanged(int rendering)
{
d->histogramWidget->m_renderingType = rendering;
d->histogramWidget->repaint(false);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotMinValueChanged(int min)
{
// Called when user changes values of spin box.
// Communicate the change to histogram widget.
// make the one control "push" the other
if (min == d->maxInterv->value()+1)
d->maxInterv->setValue(min);
d->maxInterv->setMinValue(min-1);
d->histogramWidget->slotMinValueChanged(min);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotMaxValueChanged(int max)
{
if (max == d->minInterv->value()-1)
d->minInterv->setValue(max);
d->minInterv->setMaxValue(max+1);
d->histogramWidget->slotMaxValueChanged(max);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotUpdateInterval(int min, int max)
{
// Called when value is set from within histogram widget.
// Block signals to prevent slotMinValueChanged and
// slotMaxValueChanged being called.
d->minInterv->blockSignals(true);
d->minInterv->setMaxValue(max+1);
d->minInterv->setValue(min);
d->minInterv->blockSignals(false);
d->maxInterv->blockSignals(true);
d->maxInterv->setMinValue(min-1);
d->maxInterv->setValue(max);
d->maxInterv->blockSignals(false);
updateStatistiques();
}
void ImagePropertiesColorsTab::slotUpdateIntervRange(int range)
{
d->maxInterv->setMaxValue( range );
}
void ImagePropertiesColorsTab::updateInformations()
{
d->labelColorDepth->setText(d->image.sixteenBit() ? i18n("16 bits") : i18n("8 bits"));
d->labelAlphaChannel->setText(d->image.hasAlpha() ? i18n("Yes") : i18n("No"));
}
void ImagePropertiesColorsTab::updateStatistiques()
{
QString value;
int min = d->minInterv->value();
int max = d->maxInterv->value();
int channel = d->channelCB->currentItem();
if ( channel == HistogramWidget::ColorChannelsHistogram )
channel = d->colorsCB->currentItem()+1;
double mean = d->histogramWidget->m_imageHistogram->getMean(channel, min, max);
d->labelMeanValue->setText(value.setNum(mean, 'f', 1));
double pixels = d->histogramWidget->m_imageHistogram->getPixels();
d->labelPixelsValue->setText(value.setNum((float)pixels, 'f', 0));
double stddev = d->histogramWidget->m_imageHistogram->getStdDev(channel, min, max);
d->labelStdDevValue->setText(value.setNum(stddev, 'f', 1));
double counts = d->histogramWidget->m_imageHistogram->getCount(channel, min, max);
d->labelCountValue->setText(value.setNum((float)counts, 'f', 0));
double median = d->histogramWidget->m_imageHistogram->getMedian(channel, min, max);
d->labelMedianValue->setText(value.setNum(median, 'f', 1));
double percentile = (pixels > 0 ? (100.0 * counts / pixels) : 0.0);
d->labelPercentileValue->setText(value.setNum(percentile, 'f', 1));
}
void ImagePropertiesColorsTab::getICCData()
{
if (d->image.getICCProfil().isNull())
{
d->iccProfileWidget->setLoadingFailed();
}
else
{
d->embedded_profile = d->image.getICCProfil();
d->iccProfileWidget->loadFromData(d->currentFilePath, d->embedded_profile);
}
}
} // NameSpace Digikam