// $Id: doccolor.h 1605 2006-07-29 19:26:03Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are 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. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // doccolor.h - definitions for Camelot DocColour class #ifndef INC_DOCCOLOR #define INC_DOCCOLOR #include "colmodel.h" #include "stockcol.h" // This is defined in colcontx.h, but we define it here to eliminate dependencies #ifndef INC_COLCONTX class ColourContext; typedef UINT32 ColourContextHandle; #endif // these constants are used to set the Reserved flag in the Info struct when // colours are converted for use in Brush Attributes. - DY 12/4/2000 const UINT32 COL_NAMED = 1; const UINT32 COL_BLACK = 2; const UINT32 COL_WHITE = 3; const UINT32 COL_OVERRIDABLE = 4; ///////////////////////////////////////////////////////////////////////////////// // DocColour Information struct // Each DocColour contains this information on its contents // Note: The order of fields was chosen to encourage byte/word16 alignment // See Also: IndexedColourInfo (in colourix.h) typedef struct { UINT32 OCContextHandle : 16; // Handle of context of the cached colour UINT32 SourceColourModel : 4; // The ColourModel of the source colour data UINT32 CacheColourModel : 4; // The ColourModel of the cached colour data UINT32 IsSeparable : 1; // TRUE if this colour should be separated UINT32 ForceRounding : 1; // TRUE if this colour should always be shown rounded to half-percents // (A bodge for PANTONE colours!) UINT32 Reserved : 5; UINT32 NoColour : 1; // 'None' Flag: Colour is 100% transparent } ColourInfo; /******************************************************************************************** > class DocColour : public CC_CLASS_MEMDUMP Author: Jason_Williams (Xara Group Ltd) Created: 30/03/94 Purpose: This class defines a colour. A DocColour stores an original definition of a colour, a cache containing the definition of the colour in the last colour context in which it was used, and sundry information. DocColours have been designed to be small things to put in attributes. DocColours cannot be used on their own, however. They have meaning only within the scope of a given colour context. DocColours can be defined in any of the available colour models. DocColours are stored to "low" (32-bit) precision, except when they are references to IndexedColours (which are 128-bit precision). However, colour calculations, and access to values stored in colours are generally only available through the 128bit interface. Notes: NOTE that any use of a DocColour may result in updating its cache, so you must NOT treat DocColours as const anywhere. Also, work on original DocColours rather than copies if you want the cache to be kept fresh on the original. SeeAlso: IndexedColour; ColourModel; ColourContext Documentation: HowToUse\colours.doc ********************************************************************************************/ class CCAPI DocColour : public CC_CLASS_MEMDUMP { friend class ColourContext; CC_DECLARE_MEMDUMP(DocColour) public: // Construction/Destruction DocColour(); ~DocColour(); DocColour(StockColour Col); // Initialise with a non-separating stock colour. See kernel\stockcol.h DocColour(ColourModel ColModel, ColourGeneric *Col); // Initialise with a given colour definition DocColour(ColourValue Red, ColourValue Green, ColourValue Blue); // Initialise with RGB values (in the range 0.0-1.0) DocColour(const DocColour &other); DocColour& operator=(const DocColour&); // Copy constructor, assignment operator public: // Linking to IndexedColours void MakeRefToIndexedColour(IndexedColour *Other); // Link this DocColour to a given IndexedColour parent inline IndexedColour *FindParentIndexedColour(void); // Get a pointer (or NULL if none) to this colour's IndexedColour parent #ifdef _DEBUG // Special function to provide extra tracing for Jason to detect where // "IndexedColour in use" problems originate. Only used in debug builds #define MakeRefToIndexedColour(Bob) MakeRefToIndexedColourDBG(Bob, THIS_FILE, __LINE__) #endif void MakeRefToIndexedColourDBG(IndexedColour *Other, LPCSTR TheFile = NULL, INT32 TheLine = 0); // Special debug version of MakeRefToIndexedColour IndexedColour *GetSpotParent(void); // Get the ultimate spot colour parent of this DocColour, if any public: // Comparison operators BOOL operator==(const DocColour) const; BOOL operator!=(const DocColour) const; public: // Interface ColourModel GetColourModel(void) const; // Get the colour model in which this colour is defined void GetSourceColour(ColourGeneric *Result); // Read the original colour definition in the GetColourModel() colour model inline BOOL IsTransparent(void) const; // Returns TRUE if this is "no colour" inline BOOL IsSeparable(void) const; void SetSeparable(BOOL IsSeparable = TRUE); // Determine/set flag to enable/disable separation and colour correction void Mix(DocColour *BlendStart, DocColour *BlendEnd, double BlendFraction, ColourContext *BlendContext, BOOL BlendTheLongWay = FALSE, ColourContext *OutputContext = NULL); // Redefine this colour as a blend/mix of two other colours void ForceRounding(BOOL RoundingOn) { Info.ForceRounding = RoundingOn; }; BOOL IsForcedToRound(void) { return(Info.ForceRounding); }; // Bodge for PANTONE colours - When Rounding is in effect, GetSourceColour will round all // returned components to the nearest half percent, which corrects the errors introduced // by using 0..255 values to represent the 200 possible half-percent values PANTONE use. // DO NOT USE THESE FUNCTIONS unless you know what you're doing // new functions to access the reserved flag void SetReservedFlag(UINT32 Value); UINT32 GetReservedFlag(); BOOL IsNamed(); void HackColReplacerPreDestruct(); protected: // Internal helper functions for RGB and HSV mixing void MixRGB(DocColour *BlendStart, DocColour *BlendEnd, double BlendFraction, ColourContext *BlendContext); // Redefine this colour as a blend/mix of two other colours void MixCMYK(DocColour *BlendStart, DocColour *BlendEnd, double BlendFraction, ColourContext *BlendContext); // Redefine this colour as a blend/mix of two other colours void MixHSV(DocColour *BlendStart, DocColour *BlendEnd, double BlendFraction, ColourContext *BlendContext, BOOL BlendTheLongWay = FALSE); // Redefine this colour as a blend/mix of two other colours void MixTint(IndexedColour *SpotParent, IndexedColour *StartTint, IndexedColour *EndTint, double BlendFraction); // Does a linear interpolation for tints, generating new local IndexedColours // to represent the resulting tint/shade values. Must only be used sparingly, // to avoid making millions of new local colours public: // Debug helpers void GetDebugDetails(StringBase* Str); // Appends details of self to Str // e.g. Str = "GradFill" // GetDebugDetails(&Str); // gives: "GradFill colour = (...)" public: // Old interface - do not use these calls any more! void SetRGBValue(INT32 Red, INT32 Green, INT32 Blue); void GetRGBValue(INT32* Red, INT32* Green, INT32* Blue); void SetCMYKValue(PColourCMYK *New); void GetCMYKValue(PColourCMYK *Result); void GetCMYKValue(ColourContext* pContext, PColourCMYK *Result); void SetHSVValue(INT32 h, INT32 s, INT32 v); void GetHSVValue(INT32* h, INT32* s, INT32* v); DocColour(INT32 Red, INT32 Green, INT32 Blue); protected: ColourInfo Info; ColourPacked SourceColour; ColourPacked CachedColour; protected: void InitialiseInfoField(ColourModel ColModel); // We need this because the ColourPacked entries are different sizes, and therefore incompletely // initialized when set up with a colour model smaller than the default. This causes issues on // retail builds because we later memcmp the entire structure to tell if colours are the same. void ZapSourceColour() {memset(&SourceColour, 0, sizeof(SourceColour)); memset(&CachedColour, 0, sizeof(CachedColour)); } }; /******************************************************************************************** < DOCCOLOUR_RGBT(col) < DOCCOLOUR_HSVT(col) < DOCCOLOUR_CMYK(col) < DOCCOLOUR_CIET(col) Comment: These macros simplify construction of DocColour objects in given colour models. Use something like this: { ColourRGBT TheDefinition; DocColour TheColour = DOCCOLOURRGBT(&TheDefinition); } Notes: Note that these macros explicitly cast 'col' to a (ColourGeneric *), so if it is not a pointer to a 128-bit colour structure (ColourGeneric, ColourRGBT, ColourCIET etc) then nasty things may occur. SeeAlso: DocColour::DocColour ********************************************************************************************/ #define DOCCOLOUR_RGBT(col) DocColour(COLOURMODEL_RGBT, (ColourGeneric *) col) #define DOCCOLOUR_HSVT(col) DocColour(COLOURMODEL_HSVT, (ColourGeneric *) col) #define DOCCOLOUR_CMYK(col) DocColour(COLOURMODEL_CMYK, (ColourGeneric *) col) #define DOCCOLOUR_CIET(col) DocColour(COLOURMODEL_CIET, (ColourGeneric *) col) /******************************************************************************************** > inline BOOL DocColour::IsTransparent() const Author: Jason_Williams (Xara Group Ltd) Created: 14/04/94 Inputs: - Outputs: - Returns: TRUE if the colour is "no colour" ("transparent"). Purpose: Determines if a colour's "no colour" flag is set SeeAlso: - ********************************************************************************************/ inline BOOL DocColour::IsTransparent(void) const { return(Info.NoColour); } /******************************************************************************************** > inline BOOL DocColour::IsSeparable() const Author: Jason_Williams (Xara Group Ltd) Created: 17/5/96 Returns: TRUE if the colour is allowed to be colour separated and/or corrected during colour conversions. Purpose: Determines if a colour's "IsSeparable" flag is set SeeAlso: DocColour::SetSeparable ********************************************************************************************/ inline BOOL DocColour::IsSeparable(void) const { return(Info.IsSeparable); } /******************************************************************************************** > inline IndexedColour *DocColour::FindParentIndexedColour(void); Author: Jason_Williams (Xara Group Ltd) Created: 7/6/94 Inputs: - Outputs: - Returns: NULL if this is an immediate colour else a pointer to the IndexedColour which this DocColour references Purpose: Determines if a colour references an IndexedColour, and if so, gives access to the parent colour. SeeAlso: DocColour::MakeRefToIndexedColour ********************************************************************************************/ inline IndexedColour *DocColour::FindParentIndexedColour(void) { if (Info.SourceColourModel != COLOURMODEL_INDEXED) return(NULL); return(SourceColour.Indexed.Colour); } #endif // INC_DOCCOLOR