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/*
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* This file is part of the KDE project
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*
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* Copyright (c) 2005-2006 Cyrille Berger <cberger@cberger.net>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "kis_halftone.h"
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#include <cmath>
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#include <kgenericfactory.h>
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#include <kis_autobrush_resource.h>
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#include <kis_convolution_painter.h>
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#include <kis_iterators_pixel.h>
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#include <kis_layer.h>
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#include <kis_math_toolbox.h>
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#include <kis_meta_registry.h>
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#include <kis_multi_integer_filter_widget.h>
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#include <kis_paint_device.h>
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#include <kis_transaction.h>
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typedef KGenericFactory<ChalkHalftone> ChalkHalftoneFactory;
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K_EXPORT_COMPONENT_FACTORY( chalkhalftone, ChalkHalftoneFactory( "chalk" ) )
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ChalkHalftone::ChalkHalftone(TQObject *parent, const char *name, const TQStringList &)
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: KParts::Plugin(parent, name)
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{
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setInstance(ChalkHalftoneFactory::instance());
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kdDebug(41006) << "Halftone filter plugin. Class: "
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<< className()
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<< ", Parent: "
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<< parent->className()
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<< "\n";
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if ( parent->inherits("KisFilterRegistry") )
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{
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KisFilterRegistry * r = dynamic_cast<KisFilterRegistry*>(parent);
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r->add(new KisHalftoneReduction());
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}
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}
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ChalkHalftone::~ChalkHalftone()
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{
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}
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KisHalftoneReduction::KisHalftoneReduction()
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: KisFilter(id(), "enhance", i18n("Halftone Reduction..."))
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{
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}
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KisHalftoneReduction::~KisHalftoneReduction()
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{
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}
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KisFilterConfigWidget * KisHalftoneReduction::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP )
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{
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vKisIntegerWidgetParam param;
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param.push_back( KisIntegerWidgetParam( 0, 100, BEST_WAVELET_FREQUENCY_VALUE, i18n("Frequency"), "frequency" ) );
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param.push_back( KisIntegerWidgetParam( 0, 100, 2, i18n("Half-size"), "halfsize" ) );
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return new KisMultiIntegerFilterWidget(parent, id().id().ascii(), id().id().ascii(), param );
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}
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KisFilterConfiguration* KisHalftoneReduction::configuration(TQWidget* nwidget )
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{
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KisMultiIntegerFilterWidget* widget = (KisMultiIntegerFilterWidget*) nwidget;
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if( widget == 0 )
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{
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return new KisHalftoneReductionConfiguration( BEST_WAVELET_FREQUENCY_VALUE, 2 );
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} else {
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return new KisHalftoneReductionConfiguration( widget->valueAt( 0 ), widget->valueAt( 1 ) );
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}
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}
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void KisHalftoneReduction::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rect)
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{
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float frequency = 1.0;
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int halfSize = 2;
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if(config !=0)
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{
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KisHalftoneReductionConfiguration* configWNRC = (KisHalftoneReductionConfiguration*)config;
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frequency = configWNRC->getDouble("frequency");
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halfSize = configWNRC->getInt("halfsize");
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kdDebug(41005) << "frequency: " << frequency << endl;
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}
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TQ_INT32 depth = src->colorSpace()->nColorChannels();
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int size;
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int maxrectsize = (rect.height() < rect.width()) ? rect.width() : rect.height();
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for(size = 2; size < maxrectsize; size *= 2) ;
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KisMathToolbox* mathToolbox = KisMetaRegistry::instance()->mtRegistry()->get( src->colorSpace()->mathToolboxID() );
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setProgressTotalSteps(mathToolbox->fastWaveletTotalSteps(rect) * 2 + size*size*depth );
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connect(mathToolbox, TQT_SIGNAL(nextStep()), this, TQT_SLOT(incProgress()));
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kdDebug(41005) << size << " " << maxrectsize << " " << rect.x() << " " << rect.y() << endl;
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kdDebug(41005) << halfSize << endl;
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KisAutobrushShape* kas = new KisAutobrushCircleShape(2*halfSize+1, 2*halfSize+1 , halfSize, halfSize);
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TQImage mask;
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kas->createBrush(&mask);
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KisKernelSP kernel = KisKernel::fromTQImage(mask); // TODO: for 1.6 reuse the chalk's core function for creating kernel : KisKernel::fromTQImage
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mask.save("testmask.png", "PNG");
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KisPaintDeviceSP interm = new KisPaintDevice(*src);
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KisColorSpace * cs = src->colorSpace();
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KisConvolutionPainter painter( interm );
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painter.beginTransaction("bouuh");
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painter.applyMatrix(kernel, rect.x(), rect.y(), rect.width(), rect.height(), BORDER_REPEAT);
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// KisPaintDeviceSP interm2 = new KisPaintDevice(*interm);
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kdDebug(41005) << "Transforming..." << endl;
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setProgressStage( i18n("Fast wavelet transformation") ,progress());
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KisMathToolbox::KisWavelet* buff = 0;
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KisMathToolbox::KisWavelet* wav = 0;
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KisMathToolbox::KisWavelet* blurwav = 0;
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try {
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buff = mathToolbox->initWavelet(src, rect);
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} catch(std::bad_alloc)
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{
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if(buff) delete buff;
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return;
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}
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try {
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wav = mathToolbox->fastWaveletTransformation(src, rect, buff);
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blurwav = mathToolbox->fastWaveletTransformation(interm, rect, buff);
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} catch(std::bad_alloc)
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{
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if(wav) delete wav;
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return;
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}
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kdDebug(41005) << "frequencying..." << endl;
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// float* fin = wav->coeffs + wav->depth*wav->size*wav->size;
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// setProgressStage( i18n("frequencying") ,progress());
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// float* it2 = wav->coeffs + wav->depth;
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int sizecopy = (int)pow(2, frequency);
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if(sizecopy > wav->size) sizecopy = wav->size;
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for(int i = 0; i < sizecopy; i++)
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{
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float *itNotblured = wav->coeffs + wav->depth * wav->size * i;
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float *itBlured = blurwav->coeffs + blurwav->depth * blurwav->size * i;
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for(int j = 0; j< sizecopy; j++)
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{
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memcpy(itBlured, itNotblured, sizeof(float) * blurwav->depth);
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itBlured += blurwav->depth;
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itNotblured += wav->depth;
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}
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}
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kdDebug(41005) << "Untransforming..." << endl;
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setProgressStage( i18n("Fast wavelet untransformation") ,progress());
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mathToolbox->fastWaveletUntransformation( dst, rect, blurwav, buff);
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delete wav;
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delete blurwav;
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delete buff;
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disconnect(mathToolbox, TQT_SIGNAL(nextStep()), this, TQT_SLOT(incProgress()));
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setProgressDone(); // Must be called even if you don't really support progression
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}
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