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/*
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* This file is part of Chalk
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*
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* Copyright (c) 2005 Casper Boemann <cbr@boemann.dk>
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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 <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 <tqcombobox.h>
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#include <tqdom.h>
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#include "kis_filter_configuration.h"
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#include "kis_filter_config_widget.h"
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#include "kis_perchannel_filter.h"
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#include "wdg_perchannel.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 "kcurve.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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KisPerChannelFilterConfiguration::KisPerChannelFilterConfiguration(int n)
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: KisFilterConfiguration( "perchannel", 1 )
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{
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curves = new TQSortedList<TQPair<double,double> >[n];
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for(int i=0;i<n;i++) {
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transfers[i] = new TQ_UINT16[256];
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for (TQ_UINT32 j = 0; j < 256; ++j) {
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transfers[i][j] = j * 257;
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}
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}
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nTransfers = n;
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dirty = true;
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oldCs = 0;
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adjustment = 0;
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}
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KisPerChannelFilterConfiguration::~KisPerChannelFilterConfiguration()
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{
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delete [] curves;
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for(int i=0;i<nTransfers;i++)
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delete [] transfers[i];
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delete adjustment;
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}
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void KisPerChannelFilterConfiguration::fromXML( const TQString& s )
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{
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TQDomDocument doc;
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doc.setContent( s );
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TQDomElement e = doc.documentElement();
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TQDomNode n = e.firstChild();
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while (!n.isNull()) {
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e = n.toElement();
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if (!e.isNull()) {
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if (e.attribute("name") == "curves") {
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TQDomNode curvesNode = e.firstChild();
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int count = 0;
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nTransfers = e.attribute("number").toUShort();
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curves = new TQSortedList<TQPair<double,double> >[nTransfers];
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while (!curvesNode.isNull()) {
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TQDomElement curvesElement = curvesNode.toElement();
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if (!curvesElement.isNull() &&
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!curvesElement.text().isEmpty()) {
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TQStringList data = TQStringList::split( ";",
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curvesElement.text() );
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TQStringList::Iterator pairStart = data.begin();
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TQStringList::Iterator pairEnd = data.end();
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for (TQStringList::Iterator it = pairStart; it != pairEnd; ++it) {
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TQString pair = * it;
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if (pair.find(",") > -1) {
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TQPair<double,double> *p = new TQPair<double,double>;
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p->first = pair.section(",", 0, 0).toDouble();
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p->second = pair.section(",", 1, 1).toDouble();
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curves[count].append(p);
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}
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}
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}
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count++;
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curvesNode = curvesNode.nextSibling();
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}
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}
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}
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n = n.nextSibling();
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}
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for(int ch = 0; ch < nTransfers; ++ch)
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{
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transfers[ch] = new TQ_UINT16[256];
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for(int i = 0; i < 256; ++i)
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{
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TQ_INT32 val;
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val = int(0xFFFF * KCurve::getCurveValue(curves[ch], i /
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255.0));
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if(val > 0xFFFF)
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val = 0xFFFF;
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if(val < 0)
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val = 0;
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transfers[ch][i] = val;
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}
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}
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dirty = true;
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}
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TQString KisPerChannelFilterConfiguration::toString()
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{
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TQDomDocument doc = TQDomDocument("filterconfig");
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TQDomElement root = doc.createElement( "filterconfig" );
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root.setAttribute( "name", name() );
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root.setAttribute( "version", version() );
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TQDomElement c = doc.createElement("curves");
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c.setAttribute("number", nTransfers);
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c.setAttribute("name", "curves");
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for (int i = 0; i < nTransfers; ++i) {
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TQDomElement t = doc.createElement("curve");
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TQPtrList<TQPair<double,double> > curve = curves[i];
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TQString sCurve;
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TQPair<double,double> * pair;
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for ( pair = curve.first(); pair; pair = curve.next() ) {
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sCurve += TQString::number(pair->first);
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sCurve += ",";
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sCurve += TQString::number(pair->second);
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sCurve += ";";
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}
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TQDomText text = doc.createCDATASection(sCurve);
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t.appendChild(text);
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c.appendChild(t);
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}
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root.appendChild(c);
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doc.appendChild( root );
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return doc.toString();
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}
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KisFilterConfigWidget * KisPerChannelFilter::createConfigurationWidget(TQWidget *parent, KisPaintDeviceSP dev)
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{
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return new KisPerChannelConfigWidget(parent, dev);
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}
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KisFilterConfiguration* KisPerChannelFilter::configuration(TQWidget *nwidget)
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{
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KisPerChannelConfigWidget* widget = (KisPerChannelConfigWidget*)nwidget;
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if ( widget == 0 )
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{
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return 0;
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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*> KisPerChannelFilter::listOfExamplesConfiguration(KisPaintDeviceSP dev)
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{
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std::list<KisFilterConfiguration*> list;
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list.insert(list.begin(), new KisPerChannelFilterConfiguration(dev->colorSpace()->nColorChannels()));
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return list;
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}
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void KisPerChannelFilter::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 per-channel filter\n";
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return;
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}
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KisPerChannelFilterConfiguration* configBC =
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dynamic_cast<KisPerChannelFilterConfiguration*>(config);
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if (configBC->nTransfers != src->colorSpace()->nColorChannels()) {
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// We got an illegal number of colorchannels.KisFilter
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return;
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}
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if (configBC->dirty || (src->colorSpace() != configBC->oldCs)) {
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delete configBC->adjustment;
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configBC->adjustment =
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src->colorSpace()->createPerChannelAdjustment(configBC->transfers);
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kdDebug() << configBC->adjustment << endl;
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configBC->oldCs = src->colorSpace();
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configBC->dirty = false;
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}
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KisColorAdjustment *adj = configBC->adjustment;
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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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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, adj, 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(), adj, 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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void KisPerChannelConfigWidget::setActiveChannel(int ch)
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{
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int i;
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int height = 256;
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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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m_histogram->setChannel(ch);
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double highest = (double)m_histogram->calculations().getHighest();
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TQ_INT32 bins = m_histogram->producer()->numberOfBins();
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if (m_histogram->getHistogramType() == LINEAR) {
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double factor = (double)height / highest;
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for( i=0; i<bins; ++i ) {
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p.drawLine(i, height, i, height - int(m_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( i = 0; i < bins; ++i ) {
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p.drawLine(i, height, i, height - int(log((double)m_histogram->getValue(i)) * factor));
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}
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}
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m_curves[m_activeCh].setAutoDelete(true);
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m_curves[m_activeCh] = m_page->kCurve->getCurve();
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m_activeCh = ch;
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m_page->kCurve->setCurve(m_curves[m_activeCh]);
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m_page->kCurve->setPixmap(pix);
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}
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KisPerChannelConfigWidget::KisPerChannelConfigWidget(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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int i;
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int height;
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m_page = new WdgPerChannel(this);
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TQHBoxLayout * l = new TQHBoxLayout(this);
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TQ_CHECK_PTR(l);
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m_dev = dev;
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m_curves = new TQSortedList<TQPair<double,double> >[m_dev->colorSpace()->nColorChannels()];
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m_activeCh = 0;
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for(unsigned int ch=0; ch <m_dev->colorSpace()->nColorChannels(); ch++)
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{
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m_curves[ch].append(new TQPair<double,double>(0, 0));
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m_curves[ch].append(new TQPair<double,double>(1, 1));
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}
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l->add(m_page);
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height = 256;
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connect( m_page->kCurve, TQT_SIGNAL(modified()), TQT_SIGNAL(sigPleaseUpdatePreview()));
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// Fill in the channel chooser
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TQValueVector<KisChannelInfo *> channels = dev->colorSpace()->channels();
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for(unsigned int val=0; val < dev->colorSpace()->nColorChannels(); val++)
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m_page->cmbChannel->insertItem(channels.at(val)->name());
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connect( m_page->cmbChannel, TQT_SIGNAL(activated(int)), this, TQT_SLOT(setActiveChannel(int)));
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// Create the horizontal gradient label
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TQPixmap hgradientpix(256, 1);
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TQPainter hgp(&hgradientpix);
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hgp.setPen(TQPen(TQColor(0,0,0),1, TQt::SolidLine));
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for( i=0; i<256; ++i )
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{
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hgp.setPen(TQColor(i,i,i));
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hgp.drawPoint(i, 0);
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}
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m_page->hgradient->setPixmap(hgradientpix);
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// Create the vertical gradient label
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TQPixmap vgradientpix(1, 256);
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TQPainter vgp(&vgradientpix);
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vgp.setPen(TQPen(TQColor(0,0,0),1, TQt::SolidLine));
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for( i=0; i<256; ++i )
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{
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vgp.setPen(TQColor(i,i,i));
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vgp.drawPoint(0, 255-i);
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}
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m_page->vgradient->setPixmap(vgradientpix);
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KisIDList keys =
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KisHistogramProducerFactoryRegistry::instance()->listKeysCompatibleWith(m_dev->colorSpace());
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KisHistogramProducerFactory *hpf;
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hpf = KisHistogramProducerFactoryRegistry::instance()->get(*(keys.at(0)));
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m_histogram = new KisHistogram(m_dev, hpf->generate(), LINEAR);
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setActiveChannel(0);
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}
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KisPerChannelFilterConfiguration * KisPerChannelConfigWidget::config()
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{
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int nCh = m_dev->colorSpace()->nColorChannels();
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KisPerChannelFilterConfiguration * cfg = new KisPerChannelFilterConfiguration(nCh);
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m_curves[m_activeCh].setAutoDelete(true);
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m_curves[m_activeCh] = m_page->kCurve->getCurve();
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for(int ch = 0; ch < nCh; ch++)
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{
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cfg->curves[ch].setAutoDelete(true);
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cfg->curves[ch].clear();
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TQPair<double, double> *p, *inpoint;
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inpoint = m_curves[ch].first();
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while(inpoint)
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{
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p = new TQPair<double, double>(inpoint->first, inpoint->second);
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cfg->curves[ch].append(p);
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inpoint = m_curves[ch].next();
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}
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for(int i=0; i <256; i++)
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{
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TQ_INT32 val;
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val = int(0xFFFF * m_page->kCurve->getCurveValue(m_curves[ch], i / 255.0));
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if ( val > 0xFFFF )
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val = 0xFFFF;
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if ( val < 0 )
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val = 0;
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cfg->transfers[ch][i] = val;
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}
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}
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cfg->dirty = true;
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return cfg;
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}
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void KisPerChannelConfigWidget::setConfiguration(KisFilterConfiguration * config)
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{
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KisPerChannelFilterConfiguration * cfg = dynamic_cast<KisPerChannelFilterConfiguration *>(config);
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for(unsigned int ch = 0; ch < cfg->nTransfers; ch++)
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{
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m_curves[ch].setAutoDelete(true);
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m_curves[ch].clear();
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TQPair<double, double> *p, *inpoint;
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inpoint = cfg->curves[ch].first();
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while(inpoint)
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{
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p = new TQPair<double, double>(inpoint->first, inpoint->second);
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m_curves[ch].append(p);
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inpoint = cfg->curves[ch].next();
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}
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}
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m_page->kCurve->setCurve(m_curves[m_activeCh]);
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setActiveChannel( 0 );
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}
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#include "kis_perchannel_filter.moc"
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