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