colors.h

//
//  
//    The Laxkit, a windowing toolkit
//    Please consult http://laxkit.sourceforge.net about where to send any
//    correspondence about this software.
//
//    This library is free software; you can redistribute it and/or
//    modify it under the terms of the GNU Library General Public
//    License as published by the Free Software Foundation; either
//    version 2 of the License, or (at your option) any later version.
//
//    This library 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
//    Library General Public License for more details.
//
//    You should have received a copy of the GNU Library General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    Copyright (C) 2009-2010,2012 by Tom Lechner
//
#ifndef _LAX_COLORS_H
#define _LAX_COLORS_H


#include <lax/refptrstack.h>
#include <lax/anobject.h>
#include <lax/dump.h>
#include <lax/screencolor.h>
#include <lax/events.h>

//#include <lcms.h>


namespace Laxkit {

#define LAX_COLOR_RGB   1
#define LAX_COLOR_CMYK  2
#define LAX_COLOR_GRAY  3

enum SimpleColorId {
    COLOR_Foreground,
    COLOR_Background,
    COLOR_Stroke,
    COLOR_Fill,
    COLOR_Controls,
    COLOR_MAX
};

//------------------------------- SimpleColorEventData ------------------------------
class SimpleColorEventData : public EventData
{
 public:
    int numchannels;
    int *channels;
    int max;
    int colortype; //LAX_COLOR_RGB, LAX_COLOR_CMYK, or LAX_COLOR_GRAY
    int id;
    SimpleColorEventData();
    SimpleColorEventData(int nmax, int gray,int a, int nid);
    SimpleColorEventData(int nmax, int r,   int g, int b, int a, int nid);
    SimpleColorEventData(int nmax, int c,   int m, int y, int k, int a,  int nid);
    virtual ~SimpleColorEventData();
};



//------------------------------- ColorPrimary -------------------------------
class ColorPrimary
{
 public:
    char *name;
    double maxvalue;
    double minvalue;
    ScreenColor screencolor;
    
    LaxFiles::Attribute atts; //*** this could be a ColorAttribute class, to allow ridiculously adaptable color systems
                    //    like being able to define a sparkle or metal speck fill pattern 
                   // for each i'th attribute
    ColorPrimary();
    virtual ~ColorPrimary();
};

//------------------------------- ColorSystem -------------------------------

#define COLOR_ADDITIVE    (1<<0)
#define COLOR_SUBTRACTIVE (1<<1)
#define COLOR_SPOT        (1<<2)
#define COLOR_ALPHAOK     (1<<3)
#define COLOR_SPECIAL_INK (1<<4)

class Color;

class ColorSystem: public Laxkit::anObject, public LaxFiles::DumpUtility 
{
 public:
    char *name;
    unsigned int systemid;
    unsigned long style;
    
    //cmsHPROFILE iccprofile;
    PtrStack<ColorPrimary> primaries;

    ColorSystem();
    virtual ~ColorSystem();

    virtual Color *newColor(int n,...);
    virtual int AlphaChannel() = 0;

     //return an image tile representing the color, speckled inks, for instance
    //virtual LaxImage *PaintPattern(Color *color); 
};



//------------------------------- Color -------------------------------
class Color : public Laxkit::anObject, public LaxFiles::DumpUtility
{
 public:
    int id;
    char *name;  //optional color instance name
    double alpha; //additional to any alpha defined in ColorSystem itself

    ColorSystem *system;
    int colorsystemid; //usually same as system->systemid;
    int n; // num values, put here so you don't have to always look them up in system definition
    double *values; // the values for each primary

    Color();
    virtual ~Color();
    Color(const Color &l);
    Color &operator=(Color &l);
    virtual int ColorSystedId() { return system ? system->systemid : colorsystemid; }
    virtual double ChannelValue(int channel);
    virtual int ChannelValueInt(int channel, int *error_ret=NULL);
    virtual double Alpha();
};



//------------------------------ ColorSet ----------------------------------
class ColorSet : public Laxkit::anObject, public LaxFiles::DumpUtility
{
 public:
    unsigned int setstyle;
    char *name;
    RefPtrStack<Color> colors;
    ColorSet();
    virtual ~ColorSet();
};

//
//    todo!


} //namespace Laxkit


#endif