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96 lines
3.2 KiB
96 lines
3.2 KiB
/*
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* This file is part of Chalk
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*
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* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
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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 "kis_color_to_alpha.h"
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#include <tqcheckbox.h>
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#include <tqspinbox.h>
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#include <kcolorbutton.h>
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#include <kis_iterators_pixel.h>
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#include "wdgcolortoalphabase.h"
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#include "kis_wdg_color_to_alpha.h"
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KisFilterColorToAlpha::KisFilterColorToAlpha() : KisFilter(id(), "colors", i18n("&Color to Alpha..."))
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{
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}
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KisFilterConfigWidget * KisFilterColorToAlpha::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP )
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{
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return new KisWdgColorToAlpha(this, parent, "configuration of color to alpha");
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}
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KisFilterConfiguration* KisFilterColorToAlpha::configuration(TQWidget* w)
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{
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KisWdgColorToAlpha * wCTA = dynamic_cast<KisWdgColorToAlpha*>(w);
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KisFilterConfiguration* config = new KisFilterConfiguration("colortoalpha", 1);
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if(wCTA)
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{
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config->setProperty("targetcolor", wCTA->widget()->colorTarget->color() );
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config->setProperty("threshold", wCTA->widget()->intThreshold->value());
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}
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return config;
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}
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void KisFilterColorToAlpha::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* config, const TQRect& rect)
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{
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Q_ASSERT(src != 0);
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Q_ASSERT(dst != 0);
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if(config == 0) config = new KisFilterConfiguration("colortoalpha", 1);
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TQVariant value;
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TQColor cTA = (config->getProperty("targetcolor", value)) ? value.toColor() : TQColor(255,255,255);
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int threshold = (config->getProperty("threshold", value)) ? value.toInt() : 0;
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KisRectIteratorPixel dstIt = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true );
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KisRectIteratorPixel srcIt = src->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), false);
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int pixelsProcessed = 0;
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setProgressTotalSteps(rect.width() * rect.height());
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KisColorSpace * cs = src->colorSpace();
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TQ_INT32 pixelsize = cs->pixelSize();
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TQ_UINT8* color = new TQ_UINT8[pixelsize];
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cs->fromTQColor(cTA, color);
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while( ! srcIt.isDone() )
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{
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if(srcIt.isSelected())
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{
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TQ_UINT8 d = cs->difference(color, srcIt.oldRawData());
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if( d >= threshold )
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{
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cs->setAlpha(dstIt.rawData(), 255, 1);
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} else {
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cs->setAlpha(dstIt.rawData(), (255 * d ) / threshold, 1 );
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}
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}
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setProgress(++pixelsProcessed);
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++srcIt;
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++dstIt;
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}
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delete[] color;
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setProgressDone(); // Must be called even if you don't really support progression
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}
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