diff options
Diffstat (limited to 'digikam/imageplugins/coreplugin/bcgtool.cpp')
| -rw-r--r-- | digikam/imageplugins/coreplugin/bcgtool.cpp | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/digikam/imageplugins/coreplugin/bcgtool.cpp b/digikam/imageplugins/coreplugin/bcgtool.cpp new file mode 100644 index 00000000..a6fba7bd --- /dev/null +++ b/digikam/imageplugins/coreplugin/bcgtool.cpp @@ -0,0 +1,366 @@ +/* ============================================================ + * + * 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) 2005-2008 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. + * + * ============================================================ */ + +// Qt includes. + +#include <qcheckbox.h> +#include <qcolor.h> +#include <qcombobox.h> +#include <qframe.h> +#include <qgroupbox.h> +#include <qhbuttongroup.h> +#include <qhgroupbox.h> +#include <qlabel.h> +#include <qlayout.h> +#include <qpushbutton.h> +#include <qtooltip.h> +#include <qvbox.h> +#include <qvgroupbox.h> +#include <qwhatsthis.h> + +// KDE includes. + +#include <kapplication.h> +#include <kconfig.h> +#include <kcursor.h> +#include <kiconloader.h> +#include <klocale.h> +#include <kstandarddirs.h> + +// LibKDcraw includes. + +#include <libkdcraw/rnuminput.h> + +// Digikam includes. + +#include "bcgmodifier.h" +#include "colorgradientwidget.h" +#include "dimg.h" +#include "editortoolsettings.h" +#include "histogramwidget.h" +#include "imageiface.h" +#include "imagewidget.h" + +// Local includes. + +#include "bcgtool.h" +#include "bcgtool.moc" + +using namespace KDcrawIface; +using namespace Digikam; + +namespace DigikamImagesPluginCore +{ + +BCGTool::BCGTool(QObject* parent) + : EditorTool(parent) +{ + setName("bcgadjust"); + setToolName(i18n("Brightness / Contrast / Gamma")); + setToolIcon(SmallIcon("contrast")); + setToolHelp("bcgadjusttool.anchor"); + + m_destinationPreviewData = 0; + + m_previewWidget = new ImageWidget("bcgadjust Tool", 0, + 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.")); + setToolView(m_previewWidget); + + // ------------------------------------------------------------- + + m_gboxSettings = new EditorToolSettings(EditorToolSettings::Default| + EditorToolSettings::Ok| + EditorToolSettings::Cancel); + + QGridLayout* gridSettings = new QGridLayout(m_gboxSettings->plainPage(), 9, 4); + + QLabel *label1 = new QLabel(i18n("Channel:"), m_gboxSettings->plainPage()); + label1->setAlignment(Qt::AlignRight | Qt::AlignVCenter); + m_channelCB = new QComboBox(false, m_gboxSettings->plainPage()); + 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(m_gboxSettings->plainPage()); + 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, 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, 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); + + // ------------------------------------------------------------- + + QVBox *histoBox = new QVBox(m_gboxSettings->plainPage()); + m_histogramWidget = new 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 ColorGradientWidget(ColorGradientWidget::Horizontal, 10, histoBox); + m_hGradient->setColors(QColor("black"), QColor("white")); + + // ------------------------------------------------------------- + + QLabel *label2 = new QLabel(i18n("Brightness:"), m_gboxSettings->plainPage()); + m_bInput = new RIntNumInput(m_gboxSettings->plainPage()); + m_bInput->setRange(-100, 100, 1); + m_bInput->setDefaultValue(0); + QWhatsThis::add( m_bInput, i18n("<p>Set here the brightness adjustment of the image.")); + + QLabel *label3 = new QLabel(i18n("Contrast:"), m_gboxSettings->plainPage()); + m_cInput = new RIntNumInput(m_gboxSettings->plainPage()); + m_cInput->setRange(-100, 100, 1); + m_cInput->setDefaultValue(0); + QWhatsThis::add( m_cInput, i18n("<p>Set here the contrast adjustment of the image.")); + + QLabel *label4 = new QLabel(i18n("Gamma:"), m_gboxSettings->plainPage()); + m_gInput = new RDoubleNumInput(m_gboxSettings->plainPage()); + m_gInput->setPrecision(2); + m_gInput->setRange(0.1, 3.0, 0.01); + m_gInput->setDefaultValue(1.0); + QWhatsThis::add( m_gInput, i18n("<p>Set here the gamma adjustment of the image.")); + + // ------------------------------------------------------------- + + gridSettings->addMultiCellLayout(l1, 0, 0, 0, 4); + gridSettings->addMultiCellWidget(histoBox, 1, 2, 0, 4); + gridSettings->addMultiCellWidget(label2, 3, 3, 0, 4); + gridSettings->addMultiCellWidget(m_bInput, 4, 4, 0, 4); + gridSettings->addMultiCellWidget(label3, 5, 5, 0, 4); + gridSettings->addMultiCellWidget(m_cInput, 6, 6, 0, 4); + gridSettings->addMultiCellWidget(label4, 7, 7, 0, 4); + gridSettings->addMultiCellWidget(m_gInput, 8, 8, 0, 4); + gridSettings->setRowStretch(9, 10); + + setToolSettings(m_gboxSettings); + init(); + + // ------------------------------------------------------------- + + 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_bInput, SIGNAL(valueChanged(int)), + this, SLOT(slotTimer())); + + connect(m_cInput, SIGNAL(valueChanged(int)), + this, SLOT(slotTimer())); + + connect(m_gInput, SIGNAL(valueChanged(double)), + this, SLOT(slotTimer())); + + connect(m_previewWidget, SIGNAL(signalResized()), + this, SLOT(slotEffect())); + + // ------------------------------------------------------------- + + m_gboxSettings->enableButton(EditorToolSettings::Ok, false); +} + +BCGTool::~BCGTool() +{ + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; +} + +void BCGTool::slotChannelChanged(int channel) +{ + switch (channel) + { + case LuminosityChannel: + m_histogramWidget->m_channelType = HistogramWidget::ValueHistogram; + m_hGradient->setColors(QColor("black"), QColor("white")); + break; + + case RedChannel: + m_histogramWidget->m_channelType = HistogramWidget::RedChannelHistogram; + m_hGradient->setColors(QColor("black"), QColor("red")); + break; + + case GreenChannel: + m_histogramWidget->m_channelType = HistogramWidget::GreenChannelHistogram; + m_hGradient->setColors(QColor("black"), QColor("green")); + break; + + case BlueChannel: + m_histogramWidget->m_channelType = HistogramWidget::BlueChannelHistogram; + m_hGradient->setColors(QColor("black"), QColor("blue")); + break; + } + + m_histogramWidget->repaint(false); +} + +void BCGTool::slotScaleChanged(int scale) +{ + m_histogramWidget->m_scaleType = scale; + m_histogramWidget->repaint(false); +} + +void BCGTool::slotColorSelectedFromTarget(const DColor &color) +{ + m_histogramWidget->setHistogramGuideByColor(color); +} + +void BCGTool::readSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("bcgadjust Tool"); + m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity. + m_scaleBG->setButton(config->readNumEntry("Histogram Scale", HistogramWidget::LogScaleHistogram)); + m_bInput->setValue(config->readNumEntry("BrightnessAjustment", m_bInput->defaultValue())); + m_cInput->setValue(config->readNumEntry("ContrastAjustment", m_cInput->defaultValue())); + m_gInput->setValue(config->readDoubleNumEntry("GammaAjustment", m_gInput->defaultValue())); + m_histogramWidget->reset(); + slotChannelChanged(m_channelCB->currentItem()); + slotScaleChanged(m_scaleBG->selectedId()); +} + +void BCGTool::writeSettings() +{ + KConfig* config = kapp->config(); + config->setGroup("bcgadjust Tool"); + 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()); + m_previewWidget->writeSettings(); + config->sync(); +} + +void BCGTool::slotResetSettings() +{ + m_bInput->blockSignals(true); + m_cInput->blockSignals(true); + m_gInput->blockSignals(true); + + m_bInput->slotReset(); + m_cInput->slotReset(); + m_gInput->slotReset(); + + m_bInput->blockSignals(false); + m_cInput->blockSignals(false); + m_gInput->blockSignals(false); + + slotEffect(); +} + +void BCGTool::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(); + + m_gboxSettings->enableButton(EditorToolSettings::Ok, + ( b != 0.0 || c != 1.0 || g != 1.0 )); + + m_histogramWidget->stopHistogramComputation(); + + if (m_destinationPreviewData) + delete [] m_destinationPreviewData; + + 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(); + + DImg preview(w, h, sb, a, m_destinationPreviewData); + 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 BCGTool::finalRendering() +{ + kapp->setOverrideCursor(KCursor::waitCursor()); + 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(); +} + +} // NameSpace DigikamImagesPluginCore + |