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PdfColor.h

/***************************************************************************
 *   Copyright (C) 2007 by Dominik Seichter                                *
 *   domseichter@web.de                                                    *
 *                                                                         *
 *   This program 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 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 Library General Public     *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef _PDF_COLOR_H_
#define _PDF_COLOR_H_

#include "PdfDefines.h"

#include "PdfName.h"

namespace PoDoFo {

class PdfArray;
class PdfObject;
class PdfVecObjects;
    
/** A color object can represent either a grayscale
 *  value, a RGB color, a CMYK color, a separation color or
 *  a CieLab color.
 *
 *  All drawing functions in PoDoFo accept a PdfColor object
 *  to specify a drawing color in one of these colorspaces.
 *
 *  Derived classes PdfColorGray, PdfColorRGB, PdfColorCMYK, PdfColorSeparation
 *  and PdfColorCieLab are available for easy construction
 */
00044 class PODOFO_API PdfColor {
 public:
    /** Create a PdfColor object that is RGB black.
     */
    PdfColor();
    
    /** Create a new PdfColor object with
     *  a grayscale value.
     *
     *  \param dGray a grayscalue value between 0.0 and 1.0
     */
    explicit PdfColor( double dGray );

    /** Create a new PdfColor object with
     *  a RGB color
     *
     *  \param dRed the value of the red component, must be between 0.0 and 1.0
     *  \param dGreen the value of the green component, must be between 0.0 and 1.0
     *  \param dBlue the value of the blue component, must be between 0.0 and 1.0
     */
    PdfColor( double dRed, double dGreen, double dBlue );

    /** Create a new PdfColor object with
     *  a CMYK color
     *
     *  \param dCyan the value of the cyan component, must be between 0.0 and 1.0
     *  \param dMagenta the value of the magenta component, must be between 0.0 and 1.0
     *  \param dYellow the value of the yellow component, must be between 0.0 and 1.0
     *  \param dBlack the value of the black component, must be between 0.0 and 1.0
     */
    PdfColor( double dCyan, double dMagenta, double dYellow, double dBlack );

    /** Copy constructor
     *
     *  \param rhs copy rhs into this object
     */
    PdfColor( const PdfColor & rhs );

    /** Destructor
     */
    virtual ~PdfColor();

    /** Assignment operator
     *
     *  \param rhs copy rhs into this object
     *
     *  \returns a reference to this color object
     */    
    const PdfColor & operator=( const PdfColor & rhs );

    /** Test for equality of colors.
     * 
     *  \param rhs color to compare ro
     *
     *  \returns true if object color is equal to rhs
     */
    inline bool operator==( const PdfColor & rhs ) const;

    /** Test for inequality of colors.
     * 
     *  \param rhs color to compare ro
     *
     *  \returns true if object color is not equal to rhs
     */
    inline bool operator!=( const PdfColor & rhs ) const;

    /** Test if this is a grayscale color.
     * 
     *  \returns true if this is a grayscale PdfColor object
     */
    inline bool IsGrayScale() const;

    /** Test if this is a RGB color.
     * 
     *  \returns true if this is a RGB PdfColor object
     */
    inline bool IsRGB() const;

    /** Test if this is a CMYK color.
     * 
     *  \returns true if this is a CMYK PdfColor object
     */
    inline bool IsCMYK() const;

    /** Test if this is a separation color.
     * 
     *  \returns true if this is a separation PdfColor object
     */
    inline bool IsSeparation() const;

    /** Test if this is a CIE-Lab color.
     * 
     *  \returns true if this is a lab Color object
     */
    inline bool IsCieLab() const;

    /** Get the colorspace of this PdfColor object
     *
     *  \returns the colorspace of this PdfColor object
     */
    inline EPdfColorSpace GetColorSpace() const;

    /** Get the alternate colorspace of this PdfColor object
     *
     *  \returns the colorspace of this PdfColor object (must be separation)
     */
    inline EPdfColorSpace GetAlternateColorSpace() const;

    /** Get the grayscale color value 
     *  of this object.
     *
     *  Throws an exception if this is no grayscale color object.
     *
     *  \returns the grayscale color value of this object (between 0.0 and 1.0)
     *
     *  \see IsGrayScale
     */
    inline double GetGrayScale() const;

    /** Get the red color value 
     *  of this object.
     *
     *  Throws an exception if this is no RGB color object.
     *
     *  \returns the red color value of this object (between 0.0 and 1.0)
     *
     *  \see IsRGB
     */
    inline double GetRed() const;

    /** Get the green color value 
     *  of this object.
     *
     *  Throws an exception if this is no RGB color object.
     *
     *  \returns the green color value of this object (between 0.0 and 1.0)
     *
     *  \see IsRGB
     */
    inline double GetGreen() const;

    /** Get the blue color value 
     *  of this object.
     *
     *  Throws an exception if this is no RGB color object.
     *
     *  \returns the blue color value of this object (between 0.0 and 1.0)
     *
     *  \see IsRGB
     */
    inline double GetBlue() const;

    /** Get the cyan color value 
     *  of this object.
     *
     *  Throws an exception if this is no CMYK or separation color object.
     *
     *  \returns the cyan color value of this object (between 0.0 and 1.0)
     *
     *  \see IsCMYK
     */
    inline double GetCyan() const;

    /** Get the magenta color value 
     *  of this object.
     *
     *  Throws an exception if this is no CMYK or separation color object.
     *
     *  \returns the magenta color value of this object (between 0.0 and 1.0)
     *
     *  \see IsCMYK
     */
    inline double GetMagenta() const;

    /** Get the yellow color value 
     *  of this object.
     *
     *  Throws an exception if this is no CMYK or separation color object.
     *
     *  \returns the yellow color value of this object (between 0.0 and 1.0)
     *
     *  \see IsCMYK
     */
    inline double GetYellow() const;

    /** Get the black color value 
     *  of this object.
     *
     *  Throws an exception if this is no CMYK or separation color object.
     *
     *  \returns the black color value of this object (between 0.0 and 1.0)
     *
     *  \see IsCMYK
     */
    inline double GetBlack() const;

    /** Get the separation name of this object.
     *
     *  Throws an exception if this is no separation color object.
     *
     *  \returns the name of this object
     *
     *  \see IsSeparation
     */
    inline const std::string GetName() const;

    /** Get the density color value 
     *  of this object.
     *
     *  Throws an exception if this is no separation color object.
     *
     *  \returns the density value of this object (between 0.0 and 1.0)
     *
     *  \see IsSeparation
     */
    inline double GetDensity() const;

    /** Get the L color value 
     *  of this object.
     *
     *  Throws an exception if this is no CIE-Lab color object.
     *
     *  \returns the L color value of this object (between 0.0 and 100.0)
     *
     *  \see IsCieLab
     */
    inline double GetCieL() const;

    /** Get the A color value 
     *  of this object.
     *
     *  Throws an exception if this is no CIE-Lab color object.
     *
     *  \returns the A color value of this object (between -128.0 and 127.0)
     *
     *  \see IsCieLab
     */
    inline double GetCieA() const;

    /** Get the B color value 
     *  of this object.
     *
     *  Throws an exception if this is no CIE-Lab color object.
     *
     *  \returns the B color value of this object (between -128.0 and 127.0)
     *
     *  \see IsCieLab
     */
    inline double GetCieB() const;

    /** Converts the color object into a grayscale
     *  color object.
     *
     *  This is only a convinience function. It might be useful
     *  for on screen display but is in NO WAY suitable to
     *  professional printing!
     *
     *  \returns a grayscale color object
     *  \see IsGrayScale()
     */
    PdfColor ConvertToGrayScale() const;

    /** Converts the color object into a RGB
     *  color object.
     *
     *  This is only a convinience function. It might be useful
     *  for on screen display but is in NO WAY suitable to
     *  professional printing!
     *
     *  \returns a RGB color object
     *  \see IsRGB()
     */
    PdfColor ConvertToRGB() const;

    /** Converts the color object into a CMYK
     *  color object.
     *
     *  This is only a convinience function. It might be useful
     *  for on screen display but is in NO WAY suitable to
     *  professional printing!
     *
     *  \returns a CMYK color object
     *  \see IsCMYK()
     */
    PdfColor ConvertToCMYK() const;

    /** Creates a PdfArray which represents a color from a color.
     *  \returns a PdfArray object
     */
    PdfArray ToArray() const;

    /** Creates a color object from a string.
     *
     *  \param pszName a string describing a color.
     *
     *  Supported values are:
     *  - single gray values as string (e.g. '0.5')
     *  - a named color (e.g. 'auquamarine' or 'magenta')
     *  - hex values (e.g. #FF002A (RGB) or #FF12AB3D (CMYK))
     *  - PdfArray's
     *
     *  \returns a PdfColor object
     */
    static PdfColor FromString( const char* pszName );

    /** Creates a color object from a PdfArray which represents a color.
     *
     *  Raises an exception if this is no PdfColor!
     *
     *  \param rArray an array that must be a color PdfArray
     *  \returns a PdfColor object
     */
    static PdfColor FromArray( const PdfArray & rArray );

    /**
     * Convert a name into a colorspace enum.
     * @param rName name representing a colorspace such as DeviceGray
     * @returns colorspace enum or ePdfColorSpace_Unknown if name is unknown
     * @see GetNameForColorSpace
     */
    static EPdfColorSpace GetColorSpaceForName( const PdfName & rName );

    /**
     * Convert a colorspace enum value into a name such as DeviceRGB
     * @param eColorSpace a colorspace
     * @returns a name
     * @see GetColorSpaceForName
     */
    static PdfName GetNameForColorSpace( EPdfColorSpace eColorSpace );

    /** Creates a colorspace object from a color to insert into resources.
     *
     *  \param pOwner a pointer to the owner of the generated object
     *  \returns a PdfObject pointer, which can be insert into resources, NULL if not needed
     */
    PdfObject* BuildColorSpace( PdfVecObjects* pOwner ) const;

 protected:
    union {
        double cmyk[4];
        double rgb[3];
        double lab[3];
        double gray;
    }  m_uColor; 
    std::string m_separationName;
    double m_separationDensity;
    EPdfColorSpace m_eColorSpace;
    EPdfColorSpace m_eAlternateColorSpace;

 private:
00394     static const unsigned int* const m_hexDigitMap; ///< Mapping of hex sequences to int value
};

00397 class PODOFO_API PdfColorGray : public PdfColor {
 public:
    
    /** Create a new PdfColor object with
     *  a grayscale value.
     *
     *  \param dGray a grayscalue value between 0.0 and 1.0
     */
    explicit PdfColorGray( double dGray );

    /** Class destructor.
     */
    virtual ~PdfColorGray();

 private:
    /** Default constructor, not implemented
     */
    PdfColorGray();

    /** Copy constructor, not implemented
     */
    PdfColorGray(const PdfColorGray& );

    /** Copy assignment operator, not implemented
     */
    PdfColorGray& operator=(const PdfColorGray&);
};

00425 class PODOFO_API PdfColorRGB : public PdfColor {
 public:
    /** Create a new PdfColor object with
     *  a RGB color
     *
     *  \param dRed the value of the red component, must be between 0.0 and 1.0
     *  \param dGreen the value of the green component, must be between 0.0 and 1.0
     *  \param dBlue the value of the blue component, must be between 0.0 and 1.0
     */
    PdfColorRGB( double dRed, double dGreen, double dBlue );

    /** Class destructor.
     */
    virtual ~PdfColorRGB();

 private:
    /** Default constructor, not implemented
     */
    PdfColorRGB();

    /** Copy constructor, not implemented
     */
    PdfColorRGB(const PdfColorRGB& );

    /** Copy assignment operator, not implemented
     */
    PdfColorRGB& operator=(const PdfColorRGB&);
};

00454 class PODOFO_API PdfColorCMYK : public PdfColor {
 public:

    /** Create a new PdfColor object with
     *  a CMYK color
     *
     *  \param dCyan the value of the cyan component, must be between 0.0 and 1.0
     *  \param dMagenta the value of the magenta component, must be between 0.0 and 1.0
     *  \param dYellow the value of the yellow component, must be between 0.0 and 1.0
     *  \param dBlack the value of the black component, must be between 0.0 and 1.0
     */
    PdfColorCMYK( double dCyan, double dMagenta, double dYellow, double dBlack );

    /** Class destructor.
     */
    virtual ~PdfColorCMYK();

 private:
    /** Default constructor, not implemented
     */
    PdfColorCMYK();

    /** Copy constructor, not implemented
     */
    PdfColorCMYK(const PdfColorCMYK& );

    /** Copy assignment operator, not implemented
     */
    PdfColorCMYK& operator=(const PdfColorCMYK&);
};

00485 class PODOFO_API PdfColorSeparationAll : public PdfColor {
 public:

     /** Create a new PdfColor object with
     *  Separation color All.
     *
     */
    PdfColorSeparationAll();

    /** Class destructor.
     */
    virtual ~PdfColorSeparationAll();

 private:
    /** Copy constructor, not implemented
     */
    PdfColorSeparationAll(const PdfColorSeparationAll& );

    /** Copy assignment operator, not implemented
     */
    PdfColorSeparationAll& operator=(const PdfColorSeparationAll&);
};

00508 class PODOFO_API PdfColorSeparationNone : public PdfColor {
 public:

     /** Create a new PdfColor object with
     *  Separation color None.
     *
     */
    PdfColorSeparationNone();

    /** Class destructor.
     */
    virtual ~PdfColorSeparationNone();

 private:
    /** Copy constructor, not implemented
     */
    PdfColorSeparationNone(const PdfColorSeparationNone& );

    /** Copy assignment operator, not implemented
     */
    PdfColorSeparationNone& operator=(const PdfColorSeparationNone&);
};

00531 class PODOFO_API PdfColorSeparation : public PdfColor {
 public:

    /** Create a new PdfColor object with
     *  a separation-name and an equivalent color
     *
     *  \param sName Name of the separation color
     *  \param sDensity the density value of the separation color
     *  \param alternateColor the alternate color, must be of typ gray, rgb, cmyk or cie
     */
    PdfColorSeparation( const std::string & sName, double dDensity, const PdfColor & alternateColor );

    /** Class destructor.
     */
    virtual ~PdfColorSeparation();

 private:
    /** Default constructor, not implemented
     */
    PdfColorSeparation();

    /** Copy constructor, not implemented
     */
    PdfColorSeparation(const PdfColorSeparation& );

    /** Copy assignment operator, not implemented
     */
    PdfColorSeparation& operator=(const PdfColorSeparation&);
};

00561 class PODOFO_API PdfColorCieLab : public PdfColor {
 public:

    /** Create a new PdfColor object with
     *  a CIE-LAB-values
     *
     *  \param dCieL the value of the L component, must be between 0.0 and 100.0
     *  \param dCieA the value of the A component, must be between -128.0 and 127.0
     *  \param dCieB the value of the B component, must be between -128.0 and 127.0
     */
    PdfColorCieLab( double dCieL, double dCieA, double dCieB );

    /** Class destructor.
     */
    virtual ~PdfColorCieLab();

 private:
    /** Default constructor, not implemented
     */
    PdfColorCieLab();

    /** Copy constructor, not implemented
     */
    PdfColorCieLab(const PdfColorCieLab& );

    /** Copy assignment operator, not implemented
     */
    PdfColorCieLab& operator=(const PdfColorCieLab&);
};

// -----------------------------------------------------
// 
// -----------------------------------------------------
00594 inline bool PdfColor::operator==( const PdfColor & rhs ) const
{
    if ( m_eColorSpace == rhs.m_eColorSpace )
    {
        if ( 
            (m_eColorSpace == ePdfColorSpace_DeviceGray)        &&
            (m_uColor.gray == rhs.m_uColor.gray)
           )
           return true;

        if ( 
            (m_eColorSpace == ePdfColorSpace_DeviceRGB)         &&
            (m_uColor.rgb[0] == rhs.m_uColor.rgb[0])            &&
            (m_uColor.rgb[1] == rhs.m_uColor.rgb[1])            &&
            (m_uColor.rgb[2] == rhs.m_uColor.rgb[2])
           )
           return true;

        if ( 
            (m_eColorSpace == ePdfColorSpace_DeviceCMYK)        &&
            (m_uColor.cmyk[0] == rhs.m_uColor.cmyk[0])          &&
            (m_uColor.cmyk[1] == rhs.m_uColor.cmyk[1])          &&
            (m_uColor.cmyk[2] == rhs.m_uColor.cmyk[2])          &&
            (m_uColor.cmyk[3] == rhs.m_uColor.cmyk[3])
           )
           return true;

        if ( 
            (m_eColorSpace == ePdfColorSpace_CieLab)            &&
            (m_uColor.lab[0] == rhs.m_uColor.lab[0])            &&
            (m_uColor.lab[1] == rhs.m_uColor.lab[1])            &&
            (m_uColor.lab[2] == rhs.m_uColor.lab[2])
           )
           return true;

        if ( 
            (m_eColorSpace == ePdfColorSpace_Separation)               &&
            (m_separationDensity == rhs.m_separationDensity)           &&
            (m_separationName == rhs.m_separationName)                 &&
            (m_eAlternateColorSpace == rhs.m_eAlternateColorSpace)     &&
            (
             (
              (m_eAlternateColorSpace == ePdfColorSpace_DeviceGray)    &&
              (m_uColor.gray == rhs.m_uColor.gray)
             )                                                         ||
             (
              (m_eAlternateColorSpace == ePdfColorSpace_DeviceRGB)     &&
              (m_uColor.rgb[0] == rhs.m_uColor.rgb[0])                 &&
              (m_uColor.rgb[1] == rhs.m_uColor.rgb[1])                 &&
              (m_uColor.rgb[2] == rhs.m_uColor.rgb[2])
             )                                                         ||
             (
              (m_eAlternateColorSpace == ePdfColorSpace_DeviceCMYK)    &&
              (m_uColor.cmyk[0] == rhs.m_uColor.cmyk[0])               &&
              (m_uColor.cmyk[1] == rhs.m_uColor.cmyk[1])               &&
              (m_uColor.cmyk[2] == rhs.m_uColor.cmyk[2])               &&
              (m_uColor.cmyk[3] == rhs.m_uColor.cmyk[3])
             )                                                         ||
             (
              (m_eAlternateColorSpace == ePdfColorSpace_CieLab)        &&
              (m_uColor.lab[0] == rhs.m_uColor.lab[0])                 &&
              (m_uColor.lab[1] == rhs.m_uColor.lab[1])                 &&
              (m_uColor.lab[2] == rhs.m_uColor.lab[2])
             )
            )
           )
           return true;

        if (m_eColorSpace == ePdfColorSpace_Unknown)
            return true;
    }
    return false;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00671 inline bool PdfColor::operator!=( const PdfColor & rhs ) const
{
    return ! (*this == rhs);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00679 bool PdfColor::IsGrayScale() const
{
    return (m_eColorSpace == ePdfColorSpace_DeviceGray);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00687 bool PdfColor::IsRGB() const
{
    return (m_eColorSpace == ePdfColorSpace_DeviceRGB);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00695 bool PdfColor::IsCMYK() const
{
    return (m_eColorSpace == ePdfColorSpace_DeviceCMYK);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00703 bool PdfColor::IsSeparation() const
{
    return (m_eColorSpace == ePdfColorSpace_Separation);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00711 bool PdfColor::IsCieLab() const
{
    return (m_eColorSpace == ePdfColorSpace_CieLab);
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00719 EPdfColorSpace PdfColor::GetColorSpace() const
{
    return m_eColorSpace;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00727 EPdfColorSpace PdfColor::GetAlternateColorSpace() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsSeparation(), "PdfColor::GetAlternateColorSpace cannot be called on non separation color objects!");
    return m_eAlternateColorSpace;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00736 double PdfColor::GetGrayScale() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsGrayScale() &&  
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceGray)), 
                           "PdfColor::GetGrayScale cannot be called on non grayscale color objects!");

    return m_uColor.gray;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00748 double PdfColor::GetRed() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsRGB() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceRGB)), 
                           "PdfColor::GetRed cannot be called on non RGB color objects!");

    return m_uColor.rgb[0];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00760 double PdfColor::GetGreen() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsRGB() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceRGB)), 
                           "PdfColor::GetGreen cannot be called on non RGB color objects!");

    return m_uColor.rgb[1];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00772 double PdfColor::GetBlue() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsRGB() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceRGB)), 
                           "PdfColor::GetBlue cannot be called on non RGB color objects!");

    return m_uColor.rgb[2];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00784 double PdfColor::GetCyan() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCMYK() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceCMYK)), 
                           "PdfColor::GetCyan cannot be called on non CMYK color objects!");

    return m_uColor.cmyk[0];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00796 double PdfColor::GetMagenta() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCMYK() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceCMYK)),
                           "PdfColor::GetMagenta cannot be called on non CMYK color objects!");

    return m_uColor.cmyk[1];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00808 double PdfColor::GetYellow() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCMYK() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceCMYK)),
                           "PdfColor::GetYellow cannot be called on non CMYK color objects!");

    return m_uColor.cmyk[2];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00820 double PdfColor::GetBlack() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCMYK() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_DeviceCMYK)), 
                           "PdfColor::GetBlack cannot be called on non CMYK color objects!");

    return m_uColor.cmyk[3];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00832 const std::string PdfColor::GetName() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsSeparation(), "PdfColor::GetName cannot be called on non separation color objects!");

    return m_separationName;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00842 double PdfColor::GetDensity() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsSeparation(), "PdfColor::GetDensity cannot be called on non separation color objects!");

    return m_separationDensity;
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00852 double PdfColor::GetCieL() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCieLab() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_CieLab)),
                           "PdfColor::GetCieL cannot be called on non CIE-Lab color objects!");

    return m_uColor.lab[0];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00864 double PdfColor::GetCieA() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCieLab() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_CieLab)),
                           "PdfColor::GetCieA cannot be called on non CIE-Lab color objects!");

    return m_uColor.lab[1];
}

// -----------------------------------------------------
// 
// -----------------------------------------------------
00876 double PdfColor::GetCieB() const
{
    PODOFO_RAISE_LOGIC_IF( !this->IsCieLab() &&
                           !(this->IsSeparation() && (this->m_eAlternateColorSpace == ePdfColorSpace_CieLab)),
                           "PdfColor::GetCieB cannot be called on non CIE-Lab color objects!");

    return m_uColor.lab[2];
}

};

#endif // _PDF_COLOR_H_

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