diff options
Diffstat (limited to 'chalk/plugins/filters/colorsfilters/kis_brightness_contrast_filter.cpp')
| -rw-r--r-- | chalk/plugins/filters/colorsfilters/kis_brightness_contrast_filter.cpp | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/chalk/plugins/filters/colorsfilters/kis_brightness_contrast_filter.cpp b/chalk/plugins/filters/colorsfilters/kis_brightness_contrast_filter.cpp new file mode 100644 index 000000000..cbca7a08c --- /dev/null +++ b/chalk/plugins/filters/colorsfilters/kis_brightness_contrast_filter.cpp @@ -0,0 +1,347 @@ +/* + * This file is part of Chalk + * + * Copyright (c) 2004 Cyrille Berger <cberger@cberger.net> + * Copyright (c) 2005 Casper Boemann <cbr@boemann.dk> +* + * 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 <math.h> + +#include <tdelocale.h> + +#include <tqlayout.h> +#include <tqpixmap.h> +#include <tqpainter.h> +#include <tqlabel.h> +#include <tqdom.h> +#include <tqstring.h> +#include <tqstringlist.h> +#include <tqpushbutton.h> + +#include "kis_filter_config_widget.h" +#include "kis_brightness_contrast_filter.h" +#include "wdg_brightness_contrast.h" +#include "kis_colorspace.h" +#include "kis_paint_device.h" +#include "kis_iterators_pixel.h" +#include "kis_iterator.h" +#include "kcurve.h" +#include "kis_histogram.h" +#include "kis_basic_histogram_producers.h" +#include "kis_painter.h" + +KisBrightnessContrastFilterConfiguration::KisBrightnessContrastFilterConfiguration() + : KisFilterConfiguration( "brightnesscontrast", 1 ) +{ + for (TQ_UINT32 i = 0; i < 256; ++i) { + transfer[i] = i * 257; + } + curve.setAutoDelete(true); + m_adjustment = 0; +} + +KisBrightnessContrastFilterConfiguration::~KisBrightnessContrastFilterConfiguration() +{ + delete m_adjustment; +} + +void KisBrightnessContrastFilterConfiguration::fromXML( const TQString& s ) +{ + TQDomDocument doc; + doc.setContent( s ); + TQDomElement e = doc.documentElement(); + TQDomNode n = e.firstChild(); + + while (!n.isNull()) { + e = n.toElement(); + if (!e.isNull()) { + if (e.tagName() == "transfer") { + TQStringList data = TQStringList::split( ",", e.text() ); + TQStringList::Iterator start = data.begin(); + TQStringList::Iterator end = data.end(); + int i = 0; + for ( TQStringList::Iterator it = start; it != end && i < 256; ++it ) { + TQString s = *it; + transfer[i] = s.toUShort(); + i++; + } + } + else if (e.tagName() == "curve") { + TQStringList data = TQStringList::split( ";", e.text() ); + TQStringList::Iterator pairStart = data.begin(); + TQStringList::Iterator pairEnd = data.end(); + curve.clear(); // XXX TQPtrList, sure I won't leak stuff here? + for (TQStringList::Iterator it = pairStart; it != pairEnd; ++it) { + TQString pair = * it; + if (pair.find(",") > -1) { + TQPair<double,double> *p = new TQPair<double,double>; + p->first = pair.section(",", 0, 0).toDouble(); + p->second = pair.section(",", 1, 1).toDouble(); + curve.append(p); + } + } + } + } + n = n.nextSibling(); + } + // If the adjustment was cached, it now has changed - invalidate it + delete m_adjustment; + m_adjustment = 0; +} + +TQString KisBrightnessContrastFilterConfiguration::toString() +{ + TQDomDocument doc = TQDomDocument("filterconfig"); + TQDomElement root = doc.createElement( "filterconfig" ); + root.setAttribute( "name", name() ); + root.setAttribute( "version", version() ); + + doc.appendChild( root ); + + TQDomElement e = doc.createElement( "transfer" ); + TQString sTransfer; + for ( uint i = 0; i < 255 ; ++i ) { + sTransfer += TQString::number( transfer[i] ); + sTransfer += ","; + } + TQDomText text = doc.createCDATASection(sTransfer); + e.appendChild(text); + root.appendChild(e); + + e = doc.createElement("curve"); + TQString sCurve; + TQPair<double,double> * pair; + for ( pair = curve.first(); pair; pair = curve.next() ) { + sCurve += TQString::number(pair->first); + sCurve += ","; + sCurve += TQString::number(pair->second); + sCurve += ";"; + } + text = doc.createCDATASection(sCurve); + e.appendChild(text); + root.appendChild(e); + + return doc.toString(); +} + +KisBrightnessContrastFilter::KisBrightnessContrastFilter() + : KisFilter( id(), "adjust", i18n("&Brightness/Contrast...")) +{ + +} + +KisFilterConfigWidget * KisBrightnessContrastFilter::createConfigurationWidget(TQWidget *parent, KisPaintDeviceSP dev) +{ + return new KisBrightnessContrastConfigWidget(parent, dev); +} + +KisFilterConfiguration* KisBrightnessContrastFilter::configuration(TQWidget *nwidget) +{ + KisBrightnessContrastConfigWidget* widget = (KisBrightnessContrastConfigWidget*)nwidget; + + if ( widget == 0 ) + { + return new KisBrightnessContrastFilterConfiguration(); + } else { + return widget->config(); + } +} + +std::list<KisFilterConfiguration*> KisBrightnessContrastFilter::listOfExamplesConfiguration(KisPaintDeviceSP /*dev*/) +{ + //XXX should really come up with a list of configurations + std::list<KisFilterConfiguration*> list; + list.insert(list.begin(), new KisBrightnessContrastFilterConfiguration( )); + return list; +} + +bool KisBrightnessContrastFilter::workWith(KisColorSpace* cs) +{ + return (cs->getProfile() != 0); +} + + +void KisBrightnessContrastFilter::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rect) +{ + + if (!config) { + kdWarning() << "No configuration object for brightness/contrast filter\n"; + return; + } + + KisBrightnessContrastFilterConfiguration* configBC = (KisBrightnessContrastFilterConfiguration*) config; + Q_ASSERT(config); + + if (src!=dst) { + KisPainter gc(dst); + gc.bitBlt(rect.x(), rect.y(), COMPOSITE_COPY, src, rect.x(), rect.y(), rect.width(), rect.height()); + gc.end(); + } + + if (configBC->m_adjustment == 0) { + configBC->m_adjustment = src->colorSpace()->createBrightnessContrastAdjustment(configBC->transfer); + } + + KisRectIteratorPixel iter = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true ); + + setProgressTotalSteps(rect.width() * rect.height()); + TQ_INT32 pixelsProcessed = 0; + + while( ! iter.isDone() && !cancelRequested()) + { + TQ_UINT32 npix=0, maxpix = iter.nConseqPixels(); + TQ_UINT8 selectedness = iter.selectedness(); + // The idea here is to handle stretches of completely selected and completely unselected pixels. + // Partially selected pixels are handled one pixel at a time. + switch(selectedness) + { + case MIN_SELECTED: + while(iter.selectedness()==MIN_SELECTED && maxpix) + { + --maxpix; + ++iter; + ++npix; + } + pixelsProcessed += npix; + break; + + case MAX_SELECTED: + { + TQ_UINT8 *firstPixel = iter.rawData(); + while(iter.selectedness()==MAX_SELECTED && maxpix) + { + --maxpix; + if (maxpix != 0) + ++iter; + ++npix; + } + // adjust + src->colorSpace()->applyAdjustment(firstPixel, firstPixel, configBC->m_adjustment, npix); + pixelsProcessed += npix; + ++iter; + break; + } + + default: + // adjust, but since it's partially selected we also only partially adjust + src->colorSpace()->applyAdjustment(iter.oldRawData(), iter.rawData(), configBC->m_adjustment, 1); + const TQ_UINT8 *pixels[2] = {iter.oldRawData(), iter.rawData()}; + TQ_UINT8 weights[2] = {MAX_SELECTED - selectedness, selectedness}; + src->colorSpace()->mixColors(pixels, weights, 2, iter.rawData()); + ++iter; + pixelsProcessed++; + break; + } + setProgress(pixelsProcessed); + } + + setProgressDone(); +} + +KisBrightnessContrastConfigWidget::KisBrightnessContrastConfigWidget(TQWidget * parent, KisPaintDeviceSP dev, const char * name, WFlags f) + : KisFilterConfigWidget(parent, name, f) +{ + int i; + int height; + m_page = new WdgBrightnessContrast(this); + TQHBoxLayout * l = new TQHBoxLayout(this); + TQ_CHECK_PTR(l); + + //Hide these buttons and labels as they are not implemented in 1.5 + m_page->pb_more_contrast->hide(); + m_page->pb_less_contrast->hide(); + m_page->pb_more_brightness->hide(); + m_page->pb_less_brightness->hide(); + m_page->textLabelBrightness->hide(); + m_page->textLabelContrast->hide(); + + l->addWidget(m_page, 0, TQt::AlignTop); + height = 256; + connect( m_page->kCurve, TQT_SIGNAL(modified()), TQT_SIGNAL(sigPleaseUpdatePreview())); + + // Create the horizontal gradient label + TQPixmap hgradientpix(256, 1); + TQPainter hgp(&hgradientpix); + hgp.setPen(TQPen(TQColor(0,0,0),1, TQt::SolidLine)); + for( i=0; i<256; ++i ) + { + hgp.setPen(TQColor(i,i,i)); + hgp.drawPoint(i, 0); + } + m_page->hgradient->setPixmap(hgradientpix); + + // Create the vertical gradient label + TQPixmap vgradientpix(1, 256); + TQPainter vgp(&vgradientpix); + vgp.setPen(TQPen(TQColor(0,0,0),1, TQt::SolidLine)); + for( i=0; i<256; ++i ) + { + vgp.setPen(TQColor(i,i,i)); + vgp.drawPoint(0, 255-i); + } + m_page->vgradient->setPixmap(vgradientpix); + + KisHistogramProducerSP producer = new KisGenericLabHistogramProducer(); + KisHistogram histogram(dev, producer, LINEAR); + TQPixmap pix(256, height); + pix.fill(); + TQPainter p(&pix); + p.setPen(TQPen(TQt::gray,1, TQt::SolidLine)); + + double highest = (double)histogram.calculations().getHighest(); + TQ_INT32 bins = histogram.producer()->numberOfBins(); + + if (histogram.getHistogramType() == LINEAR) { + double factor = (double)height / highest; + for( i=0; i<bins; ++i ) { + p.drawLine(i, height, i, height - int(histogram.getValue(i) * factor)); + } + } else { + double factor = (double)height / (double)log(highest); + for( i = 0; i < bins; ++i ) { + p.drawLine(i, height, i, height - int(log((double)histogram.getValue(i)) * factor)); + } + } + + m_page->kCurve->setPixmap(pix); + +} + +KisBrightnessContrastFilterConfiguration * KisBrightnessContrastConfigWidget::config() +{ + KisBrightnessContrastFilterConfiguration * cfg = new KisBrightnessContrastFilterConfiguration(); + + for(int i=0; i <256; i++) + { + TQ_INT32 val; + val = int(0xFFFF * m_page->kCurve->getCurveValue( i / 255.0)); + if(val >0xFFFF) + val=0xFFFF; + if(val <0) + val = 0; + + cfg->transfer[i] = val; + } + cfg->curve = m_page->kCurve->getCurve(); + return cfg; +} + +void KisBrightnessContrastConfigWidget::setConfiguration( KisFilterConfiguration * config ) +{ + KisBrightnessContrastFilterConfiguration * cfg = dynamic_cast<KisBrightnessContrastFilterConfiguration *>(config); + m_page->kCurve->setCurve(cfg->curve); +} |