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325 lines
11 KiB
325 lines
11 KiB
/*
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* This file is part of Chalk
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*
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* Copyright (c) 2006 Frederic Coiffier <fcoiffie@gmail.com>
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*
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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 <math.h>
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#include <klocale.h>
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#include <tqlayout.h>
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#include <tqpixmap.h>
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#include <tqpainter.h>
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#include <tqlabel.h>
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#include <tqspinbox.h>
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#include "kis_filter_config_widget.h"
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#include "kis_level_filter.h"
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#include "wdg_level.h"
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#include "kis_colorspace.h"
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#include "kis_paint_device.h"
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#include "kis_iterators_pixel.h"
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#include "kis_iterator.h"
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#include "kis_histogram.h"
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#include "kis_basic_histogram_producers.h"
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#include "kis_painter.h"
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#include "kgradientslider.h"
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KisLevelFilterConfiguration::KisLevelFilterConfiguration()
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: KisFilterConfiguration( "levels", 1 )
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{
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whitevalue = 255;
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blackvalue = 0;
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gammavalue = 1.0;
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outwhitevalue = 0xFFFF;
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outblackvalue = 0;
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m_adjustment = 0;
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}
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KisLevelFilterConfiguration::~KisLevelFilterConfiguration()
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{
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delete m_adjustment;
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}
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void KisLevelFilterConfiguration::fromXML( const TQString& s )
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{
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KisFilterConfiguration::fromXML(s);
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blackvalue = getInt( "blackvalue" );
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whitevalue = getInt( "whitevalue" );
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gammavalue = getDouble( "gammavalue" );
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outblackvalue = getInt( "outblackvalue" );
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outwhitevalue = getInt( "outwhitevalue" );
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}
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TQString KisLevelFilterConfiguration::toString()
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{
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m_properties.clear();
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setProperty("blackvalue", blackvalue);
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setProperty("whitevalue", whitevalue);
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setProperty("gammavalue", gammavalue);
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setProperty("outblackvalue", outblackvalue);
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setProperty("outwhitevalue", outwhitevalue);
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return KisFilterConfiguration::toString();
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}
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KisLevelFilter::KisLevelFilter()
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: KisFilter( id(), "adjust", i18n("&Levels"))
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{
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}
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KisFilterConfigWidget * KisLevelFilter::createConfigurationWidget(TQWidget *parent, KisPaintDeviceSP dev)
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{
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return new KisLevelConfigWidget(parent, dev);
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}
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KisFilterConfiguration* KisLevelFilter::configuration(TQWidget *nwidget)
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{
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KisLevelConfigWidget* widget = (KisLevelConfigWidget*)nwidget;
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if ( widget == 0 )
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{
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return new KisLevelFilterConfiguration();
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} else {
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return widget->config();
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}
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}
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std::list<KisFilterConfiguration*> KisLevelFilter::listOfExamplesConfiguration(KisPaintDeviceSP /*dev*/)
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{
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//XXX should really come up with a list of configurations
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std::list<KisFilterConfiguration*> list;
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list.insert(list.begin(), new KisLevelFilterConfiguration( ));
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return list;
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}
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bool KisLevelFilter::workWith(KisColorSpace* cs)
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{
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return (cs->getProfile() != 0);
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}
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void KisLevelFilter::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rect)
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{
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if (!config) {
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kdWarning() << "No configuration object for level filter\n";
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return;
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}
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KisLevelFilterConfiguration* configBC = (KisLevelFilterConfiguration*) config;
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Q_ASSERT(config);
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if (src!=dst) {
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KisPainter gc(dst);
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gc.bitBlt(rect.x(), rect.y(), COMPOSITE_COPY, src, rect.x(), rect.y(), rect.width(), rect.height());
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gc.end();
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}
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if (configBC->m_adjustment == 0) {
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TQ_UINT16 transfer[256];
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for (int i = 0; i < 256; i++) {
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if (i <= configBC->blackvalue)
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transfer[i] = configBC->outblackvalue;
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else if (i < configBC->whitevalue)
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{
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double a = (double)(i - configBC->blackvalue) / (double)(configBC->whitevalue - configBC->blackvalue);
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a = (double)(configBC->outwhitevalue - configBC->outblackvalue) * pow (a, (1.0 / configBC->gammavalue));
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transfer[i] = int(configBC->outblackvalue + a);
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}
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else
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transfer[i] = configBC->outwhitevalue;
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}
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configBC->m_adjustment = src->colorSpace()->createBrightnessContrastAdjustment(transfer);
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}
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KisRectIteratorPixel iter = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true );
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setProgressTotalSteps(rect.width() * rect.height());
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TQ_INT32 pixelsProcessed = 0;
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while( ! iter.isDone() && !cancelRequested())
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{
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TQ_UINT32 npix=0, maxpix = iter.nConseqPixels();
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TQ_UINT8 selectedness = iter.selectedness();
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// The idea here is to handle stretches of completely selected and completely unselected pixels.
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// Partially selected pixels are handled one pixel at a time.
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switch(selectedness)
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{
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case MIN_SELECTED:
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while(iter.selectedness()==MIN_SELECTED && maxpix)
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{
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--maxpix;
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++iter;
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++npix;
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}
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pixelsProcessed += npix;
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break;
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case MAX_SELECTED:
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{
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TQ_UINT8 *firstPixel = iter.rawData();
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while(iter.selectedness()==MAX_SELECTED && maxpix)
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{
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--maxpix;
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if (maxpix != 0)
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++iter;
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++npix;
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}
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// adjust
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src->colorSpace()->applyAdjustment(firstPixel, firstPixel, configBC->m_adjustment, npix);
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pixelsProcessed += npix;
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++iter;
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break;
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}
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default:
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// adjust, but since it's partially selected we also only partially adjust
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src->colorSpace()->applyAdjustment(iter.oldRawData(), iter.rawData(), configBC->m_adjustment, 1);
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const TQ_UINT8 *pixels[2] = {iter.oldRawData(), iter.rawData()};
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TQ_UINT8 weights[2] = {MAX_SELECTED - selectedness, selectedness};
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src->colorSpace()->mixColors(pixels, weights, 2, iter.rawData());
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++iter;
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pixelsProcessed++;
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break;
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}
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setProgress(pixelsProcessed);
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}
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setProgressDone();
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}
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KisLevelConfigWidget::KisLevelConfigWidget(TQWidget * parent, KisPaintDeviceSP dev, const char * name, WFlags f)
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: KisFilterConfigWidget(parent, name, f)
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{
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m_page = new WdgLevel(this);
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histogram = NULL;
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m_page->ingradient->enableGamma(true);
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m_page->blackspin->setValue(0);
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m_page->whitespin->setValue(255);
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m_page->gammaspin->setNum(1.0);
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m_page->ingradient->modifyGamma(1.0);
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m_page->outblackspin->setValue(0);
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m_page->outwhitespin->setValue(255);
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TQHBoxLayout * l = new TQHBoxLayout(this);
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Q_CHECK_PTR(l);
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l->addWidget(m_page, 0, TQt::AlignTop);
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connect( m_page->blackspin, TQT_SIGNAL(valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
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connect( m_page->whitespin, TQT_SIGNAL(valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
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connect( m_page->ingradient, TQT_SIGNAL(modifiedGamma(double)), TQT_SIGNAL(sigPleaseUpdatePreview()));
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connect( m_page->blackspin, TQT_SIGNAL(valueChanged(int)), m_page->ingradient, TQT_SLOT(modifyBlack(int)));
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connect( m_page->whitespin, TQT_SIGNAL(valueChanged(int)), m_page->ingradient, TQT_SLOT(modifyWhite(int)));
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//connect( m_page->whitespin, TQT_SIGNAL(valueChanged(int)), m_page->ingradient, TQT_SLOT(modifyGamma()));
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connect( m_page->ingradient, TQT_SIGNAL(modifiedBlack(int)), m_page->blackspin, TQT_SLOT(setValue(int)));
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connect( m_page->ingradient, TQT_SIGNAL(modifiedWhite(int)), m_page->whitespin, TQT_SLOT(setValue(int)));
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connect( m_page->ingradient, TQT_SIGNAL(modifiedGamma(double)), m_page->gammaspin, TQT_SLOT(setNum(double)));
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connect( m_page->outblackspin, TQT_SIGNAL(valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
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connect( m_page->outwhitespin, TQT_SIGNAL(valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
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connect( m_page->outblackspin, TQT_SIGNAL(valueChanged(int)), m_page->outgradient, TQT_SLOT(modifyBlack(int)));
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connect( m_page->outwhitespin, TQT_SIGNAL(valueChanged(int)), m_page->outgradient, TQT_SLOT(modifyWhite(int)));
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connect( m_page->outgradient, TQT_SIGNAL(modifiedBlack(int)), m_page->outblackspin, TQT_SLOT(setValue(int)));
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connect( m_page->outgradient, TQT_SIGNAL(modifiedWhite(int)), m_page->outwhitespin, TQT_SLOT(setValue(int)));
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connect( (TQObject*)(m_page->chkLogarithmic), TQT_SIGNAL(toggled(bool)), this, TQT_SLOT(drawHistogram(bool)));
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KisHistogramProducerSP producer = new KisGenericLabHistogramProducer();
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histogram = new KisHistogram(dev, producer, LINEAR);
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m_histlog = false;
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drawHistogram();
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}
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KisLevelConfigWidget::~KisLevelConfigWidget()
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{
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delete histogram;
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}
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void KisLevelConfigWidget::drawHistogram(bool logarithmic)
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{
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int height = 256;
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if (m_histlog != logarithmic) {
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// Update the histogram
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if (logarithmic)
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histogram->setHistogramType(LOGARITHMIC);
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else
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histogram->setHistogramType(LINEAR);
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m_histlog = logarithmic;
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}
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TQPixmap pix(256, height);
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pix.fill();
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TQPainter p(&pix);
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p.setPen(TQPen(TQt::gray,1, TQt::SolidLine));
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double highest = (double)histogram->calculations().getHighest();
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TQ_INT32 bins = histogram->producer()->numberOfBins();
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if (histogram->getHistogramType() == LINEAR) {
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double factor = (double)height / highest;
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for( int i=0; i<bins; ++i ) {
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p.drawLine(i, height, i, height - int(histogram->getValue(i) * factor));
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}
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} else {
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double factor = (double)height / (double)log(highest);
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for( int i = 0; i < bins; ++i ) {
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p.drawLine(i, height, i, height - int(log((double)histogram->getValue(i)) * factor));
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}
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}
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m_page->histview->setPixmap(pix);
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}
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KisLevelFilterConfiguration * KisLevelConfigWidget::config()
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{
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KisLevelFilterConfiguration * cfg = new KisLevelFilterConfiguration();
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cfg->blackvalue = m_page->blackspin->value();
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cfg->whitevalue = m_page->whitespin->value();
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cfg->gammavalue = m_page->ingradient->getGamma();
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cfg->outblackvalue = m_page->outblackspin->value() * 255;
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cfg->outwhitevalue = m_page->outwhitespin->value() * 255;
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return cfg;
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}
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void KisLevelConfigWidget::setConfiguration( KisFilterConfiguration * config )
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{
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KisLevelFilterConfiguration * cfg = dynamic_cast<KisLevelFilterConfiguration *>(config);
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m_page->blackspin->setValue(cfg->blackvalue);
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m_page->whitespin->setValue(cfg->whitevalue);
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m_page->ingradient->modifyGamma(cfg->gammavalue);
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m_page->outblackspin->setValue(cfg->outblackvalue / 255);
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m_page->outwhitespin->setValue(cfg->outwhitevalue / 255);
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}
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