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441 lines
17 KiB
441 lines
17 KiB
/* ============================================================
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*
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* This file is a part of digiKam project
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* http://www.digikam.org
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*
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* Date : 2004-07-11
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* Description : digiKam image editor Color Balance tool.
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*
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* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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// TQt includes.
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#include <tqcheckbox.h>
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#include <tqcolor.h>
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#include <tqcombobox.h>
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#include <tqframe.h>
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#include <tqgroupbox.h>
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#include <tqhbuttongroup.h>
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#include <tqhgroupbox.h>
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#include <tqlabel.h>
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#include <tqlayout.h>
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#include <tqpushbutton.h>
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#include <tqslider.h>
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#include <tqtooltip.h>
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#include <tqvbox.h>
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#include <tqvgroupbox.h>
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#include <tqwhatsthis.h>
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// KDE includes.
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#include <kapplication.h>
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#include <kconfig.h>
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#include <kcursor.h>
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#include <kiconloader.h>
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#include <klocale.h>
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#include <kstandarddirs.h>
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// LibKDcraw includes.
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#include <libkdcraw/rnuminput.h>
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// Digikam includes.
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#include "colorgradientwidget.h"
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#include "colormodifier.h"
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#include "dimg.h"
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#include "editortoolsettings.h"
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#include "histogramwidget.h"
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#include "imageiface.h"
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#include "imagewidget.h"
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// Local includes.
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#include "rgbtool.h"
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#include "rgbtool.moc"
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using namespace KDcrawIface;
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using namespace Digikam;
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namespace DigikamImagesPluginCore
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{
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RGBTool::RGBTool(TQObject* parent)
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: EditorTool(parent)
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{
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setName("colorbalance");
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setToolName(i18n("Color Balance"));
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setToolIcon(SmallIcon("adjustrgb"));
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m_destinationPreviewData = 0;
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m_previewWidget = new ImageWidget("colorbalance Tool", 0,
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i18n("<p>Here you can see the image "
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"color-balance adjustments preview. "
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"You can pick color on image "
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"to see the color level corresponding on histogram."));
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setToolView(m_previewWidget);
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// -------------------------------------------------------------
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m_gboxSettings = new EditorToolSettings(EditorToolSettings::Default|
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EditorToolSettings::Ok|
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EditorToolSettings::Cancel);
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TQGridLayout* gridSettings = new TQGridLayout(m_gboxSettings->plainPage(), 7, 4);
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TQLabel *label1 = new TQLabel(i18n("Channel:"), m_gboxSettings->plainPage());
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label1->tqsetAlignment(TQt::AlignRight | TQt::AlignVCenter);
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m_channelCB = new TQComboBox(false, m_gboxSettings->plainPage());
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m_channelCB->insertItem(i18n("Luminosity"));
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m_channelCB->insertItem(i18n("Red"));
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m_channelCB->insertItem(i18n("Green"));
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m_channelCB->insertItem(i18n("Blue"));
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TQWhatsThis::add( m_channelCB, i18n("<p>Select the histogram channel to display here:<p>"
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"<b>Luminosity</b>: display the image's luminosity values.<p>"
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"<b>Red</b>: display the red image-channel values.<p>"
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"<b>Green</b>: display the green image-channel values.<p>"
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"<b>Blue</b>: display the blue image-channel values.<p>"));
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m_scaleBG = new TQHButtonGroup(m_gboxSettings->plainPage());
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m_scaleBG->setExclusive(true);
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m_scaleBG->setFrameShape(TQFrame::NoFrame);
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m_scaleBG->setInsideMargin(0);
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TQWhatsThis::add( m_scaleBG, i18n("<p>Select the histogram scale here.<p>"
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"If the image's maximal counts are small, you can use the linear scale.<p>"
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"Logarithmic scale can be used when the maximal counts are big; "
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"if it is used, all values (small and large) will be visible on the graph."));
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TQPushButton *linHistoButton = new TQPushButton(m_scaleBG);
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TQToolTip::add(linHistoButton, i18n("<p>Linear"));
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m_scaleBG->insert(linHistoButton, HistogramWidget::LinScaleHistogram);
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KGlobal::dirs()->addResourceType("histogram-lin", KGlobal::dirs()->kde_default("data") + "digikam/data");
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TQString directory = KGlobal::dirs()->findResourceDir("histogram-lin", "histogram-lin.png");
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linHistoButton->setPixmap(TQPixmap(directory + "histogram-lin.png"));
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linHistoButton->setToggleButton(true);
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TQPushButton *logHistoButton = new TQPushButton(m_scaleBG);
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TQToolTip::add(logHistoButton, i18n("<p>Logarithmic"));
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m_scaleBG->insert(logHistoButton, HistogramWidget::LogScaleHistogram);
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KGlobal::dirs()->addResourceType("histogram-log", KGlobal::dirs()->kde_default("data") + "digikam/data");
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directory = KGlobal::dirs()->findResourceDir("histogram-log", "histogram-log.png");
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logHistoButton->setPixmap(TQPixmap(directory + "histogram-log.png"));
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logHistoButton->setToggleButton(true);
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TQHBoxLayout* l1 = new TQHBoxLayout();
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l1->addWidget(label1);
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l1->addWidget(m_channelCB);
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l1->addStretch(10);
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l1->addWidget(m_scaleBG);
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gridSettings->addMultiCellLayout(l1, 0, 0, 0, 4);
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// -------------------------------------------------------------
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TQVBox *histoBox = new TQVBox(m_gboxSettings->plainPage());
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m_histogramWidget = new HistogramWidget(256, 140, histoBox, false, true, true);
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TQWhatsThis::add( m_histogramWidget, i18n("<p>Here you can see the target preview image histogram drawing "
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"of the selected image channel. This one is re-computed at any "
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"settings changes."));
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TQLabel *space = new TQLabel(histoBox);
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space->setFixedHeight(1);
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m_hGradient = new ColorGradientWidget(ColorGradientWidget::Horizontal, 10, histoBox);
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m_hGradient->setColors(TQColor("black"), TQColor("white"));
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gridSettings->addMultiCellWidget(histoBox, 1, 2, 0, 4);
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// -------------------------------------------------------------
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TQLabel *labelLeft = new TQLabel(i18n("Cyan"), m_gboxSettings->plainPage());
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labelLeft->tqsetAlignment ( TQt::AlignRight | TQt::AlignVCenter );
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m_rSlider = new TQSlider(-100, 100, 1, 0, Qt::Horizontal, m_gboxSettings->plainPage(), "m_rSlider");
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m_rSlider->setTickmarks(TQSlider::Below);
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m_rSlider->setTickInterval(20);
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TQWhatsThis::add( m_rSlider, i18n("<p>Set here the cyan/red color adjustment of the image."));
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TQLabel *labelRight = new TQLabel(i18n("Red"), m_gboxSettings->plainPage());
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labelRight->tqsetAlignment ( TQt::AlignLeft | TQt::AlignVCenter );
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m_rInput = new RIntNumInput(m_gboxSettings->plainPage());
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m_rInput->setDefaultValue(0);
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m_rInput->input()->setRange(-100, 100, 1, false);
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gridSettings->addMultiCellWidget(labelLeft, 3, 3, 0, 0);
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gridSettings->addMultiCellWidget(m_rSlider, 3, 3, 1, 1);
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gridSettings->addMultiCellWidget(labelRight, 3, 3, 2, 2);
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gridSettings->addMultiCellWidget(m_rInput, 3, 3, 3, 3);
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// -------------------------------------------------------------
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labelLeft = new TQLabel(i18n("Magenta"), m_gboxSettings->plainPage());
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labelLeft->tqsetAlignment(TQt::AlignRight | TQt::AlignVCenter);
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m_gSlider = new TQSlider(-100, 100, 1, 0, Qt::Horizontal, m_gboxSettings->plainPage(), "m_gSlider");
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m_gSlider->setTickmarks(TQSlider::Below);
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m_gSlider->setTickInterval(20);
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TQWhatsThis::add( m_gSlider, i18n("<p>Set here the magenta/green color adjustment of the image."));
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labelRight = new TQLabel(i18n("Green"), m_gboxSettings->plainPage());
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labelRight->tqsetAlignment(TQt::AlignLeft | TQt::AlignVCenter);
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m_gInput = new RIntNumInput(m_gboxSettings->plainPage());
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m_gInput->setDefaultValue(0);
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m_gInput->input()->setRange(-100, 100, 1, false);
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gridSettings->addMultiCellWidget(labelLeft, 4, 4, 0, 0);
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gridSettings->addMultiCellWidget(m_gSlider, 4, 4, 1, 1);
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gridSettings->addMultiCellWidget(labelRight, 4, 4, 2, 2);
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gridSettings->addMultiCellWidget(m_gInput, 4, 4, 3, 3);
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// -------------------------------------------------------------
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labelLeft = new TQLabel(i18n("Yellow"), m_gboxSettings->plainPage());
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labelLeft->tqsetAlignment ( TQt::AlignRight | TQt::AlignVCenter );
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m_bSlider = new TQSlider(-100, 100, 1, 0, Qt::Horizontal, m_gboxSettings->plainPage(), "m_bSlider");
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m_bSlider->setTickmarks(TQSlider::Below);
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m_bSlider->setTickInterval(20);
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TQWhatsThis::add( m_bSlider, i18n("<p>Set here the yellow/blue color adjustment of the image."));
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labelRight = new TQLabel(i18n("Blue"), m_gboxSettings->plainPage());
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labelRight->tqsetAlignment(TQt::AlignLeft | TQt::AlignVCenter);
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m_bInput = new RIntNumInput(m_gboxSettings->plainPage());
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m_bInput->setDefaultValue(0);
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m_bInput->input()->setRange(-100, 100, 1, false);
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gridSettings->addMultiCellWidget(labelLeft, 5, 5, 0, 0);
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gridSettings->addMultiCellWidget(m_bSlider, 5, 5, 1, 1);
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gridSettings->addMultiCellWidget(labelRight, 5, 5, 2, 2);
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gridSettings->addMultiCellWidget(m_bInput, 5, 5, 3, 3);
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m_rInput->setValue(0);
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m_gInput->setValue(0);
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m_bInput->setValue(0);
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gridSettings->setRowStretch(6, 10);
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setToolSettings(m_gboxSettings);
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init();
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// -------------------------------------------------------------
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connect(m_channelCB, TQT_SIGNAL(activated(int)),
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this, TQT_SLOT(slotChannelChanged(int)));
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connect(m_scaleBG, TQT_SIGNAL(released(int)),
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this, TQT_SLOT(slotScaleChanged(int)));
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connect(m_previewWidget, TQT_SIGNAL(spotPositionChangedFromTarget( const Digikam::DColor &, const TQPoint & )),
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this, TQT_SLOT(slotColorSelectedFromTarget( const Digikam::DColor & )));
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connect(m_rSlider, TQT_SIGNAL(valueChanged(int)),
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m_rInput, TQT_SLOT(setValue(int)));
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connect(m_rInput, TQT_SIGNAL(valueChanged (int)),
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m_rSlider, TQT_SLOT(setValue(int)));
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connect(m_rInput, TQT_SIGNAL(valueChanged (int)),
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this, TQT_SLOT(slotTimer()));
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connect(m_gSlider, TQT_SIGNAL(valueChanged(int)),
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m_gInput, TQT_SLOT(setValue(int)));
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connect(m_gInput, TQT_SIGNAL(valueChanged (int)),
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m_gSlider, TQT_SLOT(setValue(int)));
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connect(m_gInput, TQT_SIGNAL(valueChanged (int)),
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this, TQT_SLOT(slotTimer()));
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connect(m_bSlider, TQT_SIGNAL(valueChanged(int)),
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m_bInput, TQT_SLOT(setValue(int)));
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connect(m_bInput, TQT_SIGNAL(valueChanged (int)),
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m_bSlider, TQT_SLOT(setValue(int)));
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connect(m_bInput, TQT_SIGNAL(valueChanged (int)),
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this, TQT_SLOT(slotTimer()));
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connect(m_previewWidget, TQT_SIGNAL(signalResized()),
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this, TQT_SLOT(slotEffect()));
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// -------------------------------------------------------------
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m_gboxSettings->enableButton(EditorToolSettings::Ok, false);
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}
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RGBTool::~RGBTool()
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{
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if (m_destinationPreviewData)
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delete [] m_destinationPreviewData;
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}
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void RGBTool::slotChannelChanged(int channel)
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{
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switch (channel)
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{
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case LuminosityChannel:
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m_histogramWidget->m_channelType = HistogramWidget::ValueHistogram;
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m_hGradient->setColors(TQColor("black"), TQColor("white"));
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break;
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case RedChannel:
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m_histogramWidget->m_channelType = HistogramWidget::RedChannelHistogram;
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m_hGradient->setColors(TQColor("black"), TQColor("red"));
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break;
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case GreenChannel:
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m_histogramWidget->m_channelType = HistogramWidget::GreenChannelHistogram;
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m_hGradient->setColors(TQColor("black"), TQColor("green"));
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break;
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case BlueChannel:
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m_histogramWidget->m_channelType = HistogramWidget::BlueChannelHistogram;
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m_hGradient->setColors(TQColor("black"), TQColor("blue"));
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break;
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}
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m_histogramWidget->tqrepaint(false);
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}
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void RGBTool::slotScaleChanged(int scale)
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{
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m_histogramWidget->m_scaleType = scale;
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m_histogramWidget->tqrepaint(false);
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}
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void RGBTool::slotColorSelectedFromTarget(const DColor &color)
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{
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m_histogramWidget->setHistogramGuideByColor(color);
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}
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void RGBTool::readSettings()
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{
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KConfig* config = kapp->config();
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config->setGroup("colorbalance Tool");
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m_channelCB->setCurrentItem(config->readNumEntry("Histogram Channel", 0)); // Luminosity.
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m_scaleBG->setButton(config->readNumEntry("Histogram Scale", HistogramWidget::LogScaleHistogram));
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int r = config->readNumEntry("RedAjustment", m_rInput->defaultValue());
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int g = config->readNumEntry("GreenAjustment", m_gInput->defaultValue());
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int b = config->readNumEntry("BlueAjustment", m_bInput->defaultValue());
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adjustSliders(r, g, b);
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m_histogramWidget->reset();
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slotChannelChanged(m_channelCB->currentItem());
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slotScaleChanged(m_scaleBG->selectedId());
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}
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void RGBTool::writeSettings()
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{
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KConfig* config = kapp->config();
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config->setGroup("colorbalance Tool");
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config->writeEntry("Histogram Channel", m_channelCB->currentItem());
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config->writeEntry("Histogram Scale", m_scaleBG->selectedId());
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config->writeEntry("RedAjustment", m_rSlider->value());
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config->writeEntry("GreenAjustment", m_gInput->value());
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config->writeEntry("BlueAjustment", m_bInput->value());
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m_previewWidget->writeSettings();
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config->sync();
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}
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void RGBTool::slotResetSettings()
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{
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int r = m_rInput->defaultValue();
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int g = m_gInput->defaultValue();
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int b = m_bInput->defaultValue();
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adjustSliders(r, g, b);
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}
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void RGBTool::adjustSliders(int r, int g, int b)
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{
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m_rSlider->blockSignals(true);
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m_gSlider->blockSignals(true);
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m_bSlider->blockSignals(true);
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m_rInput->blockSignals(true);
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m_gInput->blockSignals(true);
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m_bInput->blockSignals(true);
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m_rSlider->setValue(r);
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m_gSlider->setValue(g);
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m_bSlider->setValue(b);
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m_rInput->setValue(r);
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m_gInput->setValue(g);
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m_bInput->setValue(b);
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m_rSlider->blockSignals(false);
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m_gSlider->blockSignals(false);
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m_bSlider->blockSignals(false);
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m_rInput->blockSignals(false);
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m_gInput->blockSignals(false);
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m_bInput->blockSignals(false);
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slotEffect();
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}
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void RGBTool::slotEffect()
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{
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kapp->setOverrideCursor( KCursor::waitCursor() );
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m_gboxSettings->enableButton(EditorToolSettings::Ok,
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(m_rInput->value() != 0 ||
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m_gInput->value() != 0 ||
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m_bInput->value() != 0));
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m_histogramWidget->stopHistogramComputation();
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if (m_destinationPreviewData)
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delete [] m_destinationPreviewData;
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ImageIface* iface = m_previewWidget->imageIface();
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m_destinationPreviewData = iface->getPreviewImage();
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int w = iface->previewWidth();
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int h = iface->previewHeight();
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bool alpha = iface->previewHasAlpha();
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bool sixteenBit = iface->previewSixteenBit();
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double r = ((double) m_rInput->value() + 100.0) / 100.0;
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double g = ((double) m_gInput->value() + 100.0) / 100.0;
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double b = ((double) m_bInput->value() + 100.0) / 100.0;
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double a = 1.0;
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DImg preview(w, h, sixteenBit, alpha, m_destinationPreviewData);
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ColorModifier cmod;
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cmod.applyColorModifier(preview, r, g, b, a);
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iface->putPreviewImage(preview.bits());
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m_previewWidget->updatePreview();
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// Update histogram.
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memcpy(m_destinationPreviewData, preview.bits(), preview.numBytes());
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m_histogramWidget->updateData(m_destinationPreviewData, w, h, sixteenBit, 0, 0, 0, false);
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kapp->restoreOverrideCursor();
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}
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void RGBTool::finalRendering()
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{
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kapp->setOverrideCursor( KCursor::waitCursor() );
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double r = ((double) m_rInput->value() + 100.0) / 100.0;
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double g = ((double) m_gInput->value() + 100.0) / 100.0;
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double b = ((double) m_bInput->value() + 100.0) / 100.0;
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double a = 1.0;
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ImageIface* iface = m_previewWidget->imageIface();
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uchar *data = iface->getOriginalImage();
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int w = iface->originalWidth();
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int h = iface->originalHeight();
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bool alpha = iface->originalHasAlpha();
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bool sixteenBit = iface->originalSixteenBit();
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DImg original(w, h, sixteenBit, alpha, data);
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delete [] data;
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ColorModifier cmod;
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cmod.applyColorModifier(original, r, g, b, a);
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iface->putOriginalImage(i18n("Color Balance"), original.bits());
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kapp->restoreOverrideCursor();
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}
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} // NameSpace DigikamImagesPluginCore
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