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220 lines
7.7 KiB
220 lines
7.7 KiB
/*
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* Copyright (c) 2004 Cyrille Berger <cberger@cberger.net>
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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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#ifndef KIS_STRATEGY_COLORSPACE_WET_H_
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#define KIS_STRATEGY_COLORSPACE_WET_H_
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#include <qcolor.h>
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#include <qstringlist.h>
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#include <qvaluelist.h>
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#include <qmap.h>
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#include "kis_global.h"
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#include "kis_abstract_colorspace.h"
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class KisFilter;
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/**
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* The wet colourspace is one of the more complicated colour spaces. Every
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* pixel actually consists of two pixels: the paint pixel and the adsorbtion
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* pixel. This corresponds to the two layers of the wetpack structure in the
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* original wetdreams code by Raph Levien.
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*/
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// XXX: This should really be in a namespace.
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typedef struct _WetPix WetPix;
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typedef struct _WetPixDbl WetPixDbl;
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typedef struct _WetPack WetPack;
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/*
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* White is made up of myth-red, myth-green, and myth-blue. Myth-red
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* looks red when viewed reflectively, but cyan when viewed
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* transmissively (thus, it vaguely resembles a dichroic
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* filter). Myth-red over black is red, and myth-red over white is
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* white.
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*
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* Total red channel concentration is myth-red concentration plus
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* cyan concentration.
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*/
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struct _WetPix {
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Q_UINT16 rd; /* Total red channel concentration */
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Q_UINT16 rw; /* Myth-red concentration */
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Q_UINT16 gd; /* Total green channel concentration */
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Q_UINT16 gw; /* Myth-green concentration */
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Q_UINT16 bd; /* Total blue channel concentration */
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Q_UINT16 bw; /* Myth-blue concentration */
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Q_UINT16 w; /* Water volume */
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Q_UINT16 h; /* Height of paper surface XXX: This might just as well be a single
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channel in our colour model that has two of
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these wetpix structs for every paint device pixels*/
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};
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struct _WetPack {
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WetPix paint; /* Paint layer */
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WetPix adsorb; /* Adsorbtion layer */
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};
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struct _WetPixDbl {
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double rd; /* Total red channel concentration */
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double rw; /* Myth-red concentration */
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double gd; /* Total green channel concentration */
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double gw; /* Myth-green concentration */
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double bd; /* Total blue channel concentration */
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double bw; /* Myth-blue concentration */
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double w; /* Water volume */
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double h; /* Height of paper surface */
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};
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void wetPixToDouble(WetPixDbl * dst, WetPix *src);
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void wetPixFromDouble(WetPix * dst, WetPixDbl *src);
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class KisWetColorSpace : public KisAbstractColorSpace {
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public:
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KisWetColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p);
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virtual ~KisWetColorSpace();
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virtual bool willDegrade(ColorSpaceIndependence independence)
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{
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if (independence == TO_RGBA8 || independence == TO_LAB16)
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return true;
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else
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return false;
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};
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public:
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// Semi-clever: we have only fifteen wet paint colors that are mapped to the
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// qcolors that are put in the painter by the special wet paint palette. Other
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// QColors are mapped to plain water...
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virtual void fromQColor(const QColor& c, Q_UINT8 *dst, KisProfile * profile = 0);
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virtual void fromQColor(const QColor& c, Q_UINT8 opacity, Q_UINT8 *dst, KisProfile * profile = 0);
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virtual void toQColor(const Q_UINT8 *src, QColor *c, KisProfile * profile = 0);
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virtual void toQColor(const Q_UINT8 *src, QColor *c, Q_UINT8 *opacity, KisProfile * profile = 0);
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virtual Q_UINT8 getAlpha(const Q_UINT8 * pixel) const;
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virtual void setAlpha( Q_UINT8 * pixels, Q_UINT8 alpha, Q_INT32 nPixels) const;
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virtual void multiplyAlpha( Q_UINT8 * pixels, Q_UINT8 alpha, Q_INT32 nPixels);
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virtual void applyAlphaU8Mask( Q_UINT8 * pixels, Q_UINT8 * alpha, Q_INT32 nPixels);
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virtual void applyInverseAlphaU8Mask( Q_UINT8 * pixels, Q_UINT8 * alpha, Q_INT32 nPixels);
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virtual Q_UINT8 scaleToU8(const Q_UINT8 * srcPixel, Q_INT32 channelPos);
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virtual Q_UINT16 scaleToU16(const Q_UINT8 * srcPixel, Q_INT32 channelPos);
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virtual void mixColors(const Q_UINT8 **colors, const Q_UINT8 *weights, Q_UINT32 nColors, Q_UINT8 *dst) const;
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virtual QValueVector<KisChannelInfo *> channels() const;
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virtual Q_UINT32 nChannels() const;
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virtual Q_UINT32 nColorChannels() const;
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virtual Q_UINT32 nSubstanceChannels() const;
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virtual Q_UINT32 pixelSize() const;
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virtual QString channelValueText(const Q_UINT8 *pixel, Q_UINT32 channelIndex) const;
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virtual QString normalisedChannelValueText(const Q_UINT8 *pixel, Q_UINT32 channelIndex) const;
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virtual QImage convertToQImage(const Q_UINT8 *data, Q_INT32 width, Q_INT32 height,
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KisProfile * dstProfile,
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Q_INT32 renderingIntent = INTENT_PERCEPTUAL,
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float exposure = 0.0f);
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virtual QValueList<KisFilter*> createBackgroundFilters();
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virtual KisCompositeOpList userVisiblecompositeOps() const;
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void setPaintWetness(bool b) { m_paintwetness = b; } // XXX this needs better design!
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bool paintWetness() { return m_paintwetness; }
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void resetPhase() { phase = phasebig++; phasebig &= 3; }
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void combinePixels(WetPix* dst, WetPix const* src1, WetPix const* src2) const {
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dst->rd = src1->rd + src2->rd;
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dst->rw = src1->rw + src2->rw;
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dst->gd = src1->gd + src2->gd;
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dst->gw = src1->gw + src2->gw;
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dst->bd = src1->bd + src2->bd;
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dst->bw = src1->bw + src2->bw;
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dst->w = src1->w + src2->w;
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}
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protected:
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virtual void bitBlt( Q_UINT8 *dst,
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Q_INT32 dstRowSize,
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const Q_UINT8 *src,
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Q_INT32 srcRowStride,
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const Q_UINT8 *srcAlphaMask,
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Q_INT32 maskRowStride,
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Q_UINT8 opacity,
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Q_INT32 rows,
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Q_INT32 cols,
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const KisCompositeOp& op);
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private:
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// This was static, but since we have only one instance of the color strategy,
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// it can be just as well a private member variable.
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void wet_init_render_tab();
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/// Convert a single pixel from its wet representation to rgb: internal rgb: rgb[0] = R, etc
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typedef enum { RGB, BGR } RGBMode;
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void wet_composite(RGBMode m, Q_UINT8 *rgb, WetPix * wet);
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void wet_render_wetness( Q_UINT8 * rgb, WetPack * pack);
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private:
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Q_UINT32 * wet_render_tab;
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QStringList m_paintNames;
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QMap<int, WetPix> m_conversionMap;
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bool m_paintwetness;
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int phase, phasebig;
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};
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class KisWetColorSpaceFactory : public KisColorSpaceFactory
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{
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public:
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/**
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* Krita definition for use in .kra files and internally: unchanging name +
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* i18n'able description.
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*/
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virtual KisID id() const { return KisID("WET", i18n("Watercolors")); };
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/**
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* lcms colorspace type definition.
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*/
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virtual Q_UINT32 colorSpaceType() { return 0; };
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virtual icColorSpaceSignature colorSpaceSignature() { return icMaxEnumData; };
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virtual KisColorSpace *createColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p) { return new KisWetColorSpace(parent, p); };
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virtual QString defaultProfile() { return ""; };
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};
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#endif // KIS_STRATEGY_COLORSPACE_WET_H_
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