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