krita

kis_u16_base_colorspace.h

00001 /*
00002  *  Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.org>
00003  *
00004  *  This program is free software; you can redistribute it and/or modify
00005  *  it under the terms of the GNU General Public License as published by
00006  *  the Free Software Foundation; either version 2 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  This program is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU General Public License
00015  *  along with this program; if not, write to the Free Software
00016  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00017  */
00018 #ifndef KIS_U16_BASE_COLORSPACE_H_
00019 #define KIS_U16_BASE_COLORSPACE_H_
00020 
00021 #include "kis_global.h"
00022 #include "kis_abstract_colorspace.h"
00023 #include "kis_integer_maths.h"
00024 
00030 class KisU16BaseColorSpace : public KisAbstractColorSpace {
00031 
00032 public:
00033 
00034     static const Q_UINT16 U16_OPACITY_OPAQUE = UINT16_MAX;
00035     static const Q_UINT16 U16_OPACITY_TRANSPARENT = UINT16_MIN;
00036 
00037 public:
00038 
00039     KisU16BaseColorSpace(const KisID & id, DWORD cmType, icColorSpaceSignature colorSpaceSignature,
00040                          KisColorSpaceFactoryRegistry * parent,
00041                          KisProfile *p)
00042     : KisAbstractColorSpace(id, cmType, colorSpaceSignature,
00043                                 parent,
00044                                 p)
00045     {
00046         m_alphaSize = sizeof(Q_UINT16);
00047     };
00048 
00049     virtual Q_UINT8 getAlpha(const Q_UINT8 * pixel) const;
00050     virtual void setAlpha(Q_UINT8 * pixels, Q_UINT8 alpha, Q_INT32 nPixels) const;
00051     virtual void multiplyAlpha(Q_UINT8 * pixels, Q_UINT8 alpha, Q_INT32 nPixels);
00052 
00053     virtual void applyAlphaU8Mask(Q_UINT8 * pixels, Q_UINT8 * alpha, Q_INT32 nPixels);
00054     virtual void applyInverseAlphaU8Mask(Q_UINT8 * pixels, Q_UINT8 * alpha, Q_INT32 nPixels);
00055 
00056     virtual QString channelValueText(const Q_UINT8 *pixel, Q_UINT32 channelIndex) const;
00057     virtual QString normalisedChannelValueText(const Q_UINT8 *pixel, Q_UINT32 channelIndex) const;
00058 
00059     virtual Q_UINT8 scaleToU8(const Q_UINT8 * srcPixel, Q_INT32 channelPos);
00060     virtual Q_UINT16 scaleToU16(const Q_UINT8 * srcPixel, Q_INT32 channelPos);
00061 
00062 protected:
00063     // For Alpha Composite
00064     struct U16Mult {
00065         inline Q_UINT16 operator()(const Q_UINT16& a, const Q_UINT16& b) const {
00066             return UINT16_MULT(a, b);
00067         }
00068     };
00069     struct Uint8ToU16 {
00070         inline Q_UINT16 operator()(const Q_UINT8 src) const {
00071             return UINT8_TO_UINT16(src);
00072         }
00073     };
00074     struct U16OpacityTest {
00075         inline bool operator()(const Q_UINT16& opacity) const {
00076             return opacity != U16_OPACITY_TRANSPARENT;
00077         }
00078     };
00079 };
00080 #endif // KIS_U16_BASE_COLORSPACE_H_
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