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koffice/chalk/plugins/viewplugins/histogram_docker/kis_cachedhistogram.cpp

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/*
* This file is part of Chalk
*
* Copyright (c) 2005 Bart Coppens <kde@bartcoppens.be>
*
* 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_paint_device.h>
#include <kis_iterators_pixel.h>
#include "kis_cachedhistogram.h"
void KisCachedHistogramObserver::regionUpdated(KisPaintDeviceSP dev) {
m_producer->clear();
KisRectIteratorPixel srcIt = dev->createRectIterator(m_x, m_y, m_w, m_h, false);
int i;
while ( !srcIt.isDone() ) {
i = srcIt.nConseqPixels();
m_producer->addRegionToBin(srcIt.rawData(), srcIt.selectionMask(), i, dev->colorSpace());
srcIt += i;
if (i == 0)
++srcIt;
}
}