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/*
* Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.org>
*
* 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 <tqcolor.h>
#include <kdebug.h>
#include "kis_abstract_colorspace.h"
#include "kis_u8_base_colorspace.h"
#include "kis_integer_maths.h"
TQ_UINT8 KisU8BaseColorSpace::getAlpha(const TQ_UINT8 * pixel) const
{
return pixel[m_alphaPos];
}
void KisU8BaseColorSpace::setAlpha(TQ_UINT8 * pixels, TQ_UINT8 alpha, TQ_INT32 nPixels) const
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
pixels += m_alphaPos;
while (nPixels > 0) {
*pixels = alpha;
--nPixels;
pixels += psize;
}
}
void KisU8BaseColorSpace::multiplyAlpha(TQ_UINT8 * pixels, TQ_UINT8 alpha, TQ_INT32 nPixels)
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
while (nPixels > 0) {
pixels[m_alphaPos] = UINT8_MULT(pixels[m_alphaPos], alpha);
--nPixels;
pixels += psize;
}
}
void KisU8BaseColorSpace::applyAlphaU8Mask(TQ_UINT8 * pixels, TQ_UINT8 * alpha, TQ_INT32 nPixels)
{
TQ_INT32 psize = pixelSize();
while (nPixels--) {
pixels[m_alphaPos] = UINT8_MULT(*(pixels + m_alphaPos) , *alpha);
alpha++;
pixels += psize;
}
}
void KisU8BaseColorSpace::applyInverseAlphaU8Mask(TQ_UINT8 * pixels, TQ_UINT8 * alpha, TQ_INT32 nPixels)
{
TQ_INT32 psize = pixelSize();
while(nPixels--) {
TQ_UINT16 p_alpha, s_alpha;
p_alpha = getAlpha(pixels);
s_alpha = MAX_SELECTED - *alpha;
setAlpha(pixels, UINT8_MULT(p_alpha, s_alpha), 1);
pixels += psize;
++alpha;
}
}
TQString KisU8BaseColorSpace::channelValueText(const TQ_UINT8 *pixel, TQ_UINT32 channelIndex) const
{
Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
TQ_UINT32 channelPosition = m_channels[channelIndex]->pos();
return TQString().setNum(pixel[channelPosition]);
}
TQString KisU8BaseColorSpace::normalisedChannelValueText(const TQ_UINT8 *pixel, TQ_UINT32 channelIndex) const
{
Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
TQ_UINT32 channelPosition = m_channels[channelIndex]->pos();
return TQString().setNum(100.0 * static_cast<float>(pixel[channelPosition]) / UINT8_MAX);
}
TQ_UINT8 KisU8BaseColorSpace::scaleToU8(const TQ_UINT8 * pixel, TQ_INT32 channelPos)
{
return pixel[channelPos];
}
TQ_UINT16 KisU8BaseColorSpace::scaleToU16(const TQ_UINT8 * pixel, TQ_INT32 channelPos)
{
return UINT8_TO_UINT16(pixel[channelPos]);
}
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