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/*
* This file is part of the KDE project
*
* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
*
* Inspired by a similar plugin for the digikam project from:
* Copyright (c) 2005 Gilles Caulier <caulier dot gilles at kdemail dot net>
*
* 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 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "lenscorrectionfilter.h"
#include <stdlib.h>
#include <vector>
#include <tqpoint.h>
#include <kdebug.h>
#include <kgenericfactory.h>
#include <kiconloader.h>
#include <kinstance.h>
#include <tdelocale.h>
#include <tdemessagebox.h>
#include <knuminput.h>
#include <kstandarddirs.h>
#include <tdetempfile.h>
#include <kis_image.h>
#include <kis_iterators_pixel.h>
#include <kis_filter_registry.h>
#include <kis_global.h>
#include <kis_layer.h>
#include <kis_random_sub_accessor.h>
#include <kis_types.h>
#include "kis_wdg_lens_correction.h"
#include "wdglenscorrectionoptions.h"
typedef KGenericFactory<ChalkLensCorrectionFilter> ChalkLensCorrectionFilterFactory;
K_EXPORT_COMPONENT_FACTORY( chalklenscorrectionfilter, ChalkLensCorrectionFilterFactory( "chalk" ) )
ChalkLensCorrectionFilter::ChalkLensCorrectionFilter(TQObject *parent, const char *name, const TQStringList &)
: KParts::Plugin(parent, name)
{
setInstance(ChalkLensCorrectionFilterFactory::instance());
if (parent->inherits("KisFilterRegistry")) {
KisFilterRegistry * manager = dynamic_cast<KisFilterRegistry *>(parent);
manager->add(new KisFilterLensCorrection());
}
}
ChalkLensCorrectionFilter::~ChalkLensCorrectionFilter()
{
}
KisFilterLensCorrection::KisFilterLensCorrection() : KisFilter(id(), "other", i18n("&Lens Correction..."))
{
}
KisFilterConfiguration* KisFilterLensCorrection::configuration(TQWidget* w)
{
TQVariant value;
KisWdgLensCorrection* wN = dynamic_cast<KisWdgLensCorrection*>(w);
KisFilterConfiguration* config = new KisFilterConfiguration(id().id(), 1);
if(wN)
{
config->setProperty("xcenter", wN->widget()->intXCenter->value() );
config->setProperty("ycenter", wN->widget()->intYCenter->value() );
config->setProperty("correctionnearcenter", wN->widget()->dblCorrectionNearCenter->value() );
config->setProperty("correctionnearedges", wN->widget()->dblCorrectionNearEdges->value() );
config->setProperty("brightness", wN->widget()->dblBrightness->value() );
}
return config;
}
KisFilterConfigWidget * KisFilterLensCorrection::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP /*dev*/)
{
return new KisWdgLensCorrection((KisFilter*)this, (TQWidget*)parent, i18n("Configuration of lens correction filter").ascii());
}
void KisFilterLensCorrection::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rawrect)
{
Q_ASSERT(src != 0);
Q_ASSERT(dst != 0);
TQRect layerrect = src->exactBounds();
TQRect workingrect = layerrect.intersect( rawrect );
setProgressTotalSteps(workingrect.width() * workingrect.height());
KisColorSpace* cs = dst->colorSpace();
TQVariant value;
double xcenter = (config && config->getProperty("xcenter", value)) ? value.toInt() : 50;
double ycenter = (config && config->getProperty("ycenter", value)) ? value.toInt() : 50;
double correctionnearcenter = (config && config->getProperty("correctionnearcenter", value)) ? value.toDouble() : 0.;
double correctionnearedges = (config && config->getProperty("correctionnearedges", value)) ? value.toDouble() : 0.;
double brightness = ( (config && config->getProperty("brightness", value)) ? value.toDouble() : 0. );
KisRectIteratorPixel dstIt = dst->createRectIterator(workingrect.x(), workingrect.y(), workingrect.width(), workingrect.height(), true );
KisRandomSubAccessorPixel srcRSA = src->createRandomSubAccessor();
double normallise_radius_sq = 4.0 / (layerrect.width() * layerrect.width() + layerrect.height() * layerrect.height());
xcenter = layerrect.x() + layerrect.width() * xcenter / 100.0;
ycenter = layerrect.y() + layerrect.height() * ycenter / 100.0;
double mult_sq = correctionnearcenter / 200.0;
double mult_qd = correctionnearedges / 200.0;
TQ_UINT16 lab[4];
while(!dstIt.isDone())
{
double off_x = dstIt.x() - xcenter;
double off_y = dstIt.y() - ycenter;
double radius_sq = ( (off_x * off_x) + (off_y * off_y) ) * normallise_radius_sq;
double radius_mult = radius_sq * mult_sq + radius_sq * radius_sq * mult_qd;
double mag = radius_mult;
radius_mult += 1.0;
double srcX = xcenter + radius_mult * off_x;
double srcY = ycenter + radius_mult * off_y;
double brighten = 1.0 + mag * brightness;
srcRSA.moveTo( KisPoint( srcX, srcY ) );
srcRSA.sampledOldRawData( dstIt.rawData() );
cs->toLabA16( dstIt.rawData(), (TQ_UINT8*)lab, 1);
lab[0] = CLAMP( lab[0] * static_cast<TQ_UINT16>( brighten ), 0, 65535);
cs->fromLabA16( (TQ_UINT8*)lab, dstIt.rawData(), 1);
++dstIt;
incProgress();
}
setProgressDone(); // Must be called even if you don't really support progression
}
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