// $Id: strkattr.h 1688 2006-08-10 12:05:20Z gerry $ /* @@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============================ */ // strkattr.h - Path stroking attributes #ifndef INC_STRKATTR #define INC_STRKATTR //#include "attrval.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "cxfrech.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "nodeattr.h" - in camtypes.h [AUTOMATICALLY REMOVED] class PathProcessorStroke; class ValueFunction; class BecomeA; /******************************************************************************************** > enum StrokeTypeID Author: Jason_Williams (Xara Group Ltd) Created: 10/1/97 Purpose: A unique identifier UINT32 for each predefined stroke type. This is used to save predefined strokes in XAR files in a minimal format ********************************************************************************************/ typedef enum { StrokeType_SimpleVarWidth = 0, } StrokeTypeID; /******************************************************************************************** > class StrokeTypeAttrValue : public AttributeValue Author: Jason_Williams (Xara Group Ltd) Created: 7/1/97 Purpose: StrokeType attribute value StrokeType attributes describe the stroking characteristics for a path Notes: This AttrValue just contains a pointer to a path processor which will stroke paths after some given fashion. The pointer may be NULL, in which case new-style stroking is disabled, and old-style "lines" will be rendered. ********************************************************************************************/ class StrokeTypeAttrValue : public AttributeValue { CC_DECLARE_DYNAMIC(StrokeTypeAttrValue) public: // Construction/Initialisation StrokeTypeAttrValue(PathProcessorStroke *pPathProcessor = NULL); ~StrokeTypeAttrValue(); static BOOL Init(void); public: // Overridden access methods virtual void Render(RenderRegion *pRegion, BOOL Temp = FALSE); virtual void Restore(RenderRegion *pRegion, BOOL Temp); virtual void GoingOutOfScope(RenderRegion *pRegion); virtual void SimpleCopy(AttributeValue *pValue); virtual NodeAttribute *MakeNode(); virtual BOOL IsDifferent(AttributeValue *pAttr); virtual StrokeTypeAttrValue &operator=(StrokeTypeAttrValue &Attrib); virtual INT32 operator==(const StrokeTypeAttrValue &Attrib); public: // Specialised interface void SetPathProcessor(PathProcessorStroke *pNewProcessor); PathProcessorStroke *GetPathProcessor(void) const { return(pProcessor); }; // Get the path processor for this stroke type (may be NULL) BOOL DoBecomeA(BecomeA* pBecomeA, Node* pParent); private: PathProcessorStroke *pProcessor; // Pointer to the PPS we use (if any) }; /*********************************************************************************************** > class AttrStrokeType : public NodeAttribute Author: Jason_Williams (Xara Group Ltd) Created: 7/1/97 Purpose: StrokeType attribute StrokeType attributes are very simple, and merely contain a StrokeTypeAttrValue, which is the entity which holds all the info and does all the work. ***********************************************************************************************/ class AttrStrokeType : public NodeAttribute { CC_DECLARE_DYNCREATE(AttrStrokeType) public: // Constructors AttrStrokeType(); AttrStrokeType(Node *ContextNode, AttachNodeDirection Direction, BOOL Locked = FALSE, BOOL Mangled = FALSE, BOOL Marked = FALSE, BOOL Selected = FALSE); public: virtual void Render(RenderRegion *pRender); virtual void CopyNodeContents(AttrStrokeType *NodeCopy); virtual void PolyCopyNodeContents(NodeRenderable* pNodeCopy); virtual INT32 operator==(const NodeAttribute& NodeAttrib); virtual Node *SimpleCopy(); virtual UINT32 GetAttrNameID(void); virtual AttrIndex GetAttributeIndex () { return ATTR_STROKETYPE; } virtual void GetDebugDetails(StringBase *Str); virtual UINT32 GetNodeSize() const; virtual BOOL WritePreChildrenWeb(BaseCamelotFilter *pFilter); virtual BOOL WritePreChildrenNative(BaseCamelotFilter *pFilter); virtual AttributeValue* GetAttributeValue() { return(&Value); }; virtual BOOL NeedsTransparency() const; BOOL DoBecomeA(BecomeA* pBecomeA, Node* pParent); BOOL HasPathProcessor(); PathProcessorStroke* GetPathProcessor(); protected: StrokeTypeAttrValue Value; }; /******************************************************************************************** > enum VariableWidthID Author: Jason_Williams (Xara Group Ltd) Created: 10/1/97 Purpose: A unique identifier UINT32 for each predefined variable width stroke function. This is used to save predefined varwidths in XAR files in a minimal format. ********************************************************************************************/ typedef enum { VarWidth_NotPredefined = 0, // For fns which aren't "simple" predefined ones VarWidth_Constant = -1, // All values are negative (positive values are used VarWidth_LinRamp = -2, // as references to complex function records) VarWidth_SRamp = -3, } VariableWidthID; /******************************************************************************************** > class VariableWidthAttrValue : public AttributeValue Author: Jason_Williams (Xara Group Ltd) Created: 7/1/97 Purpose: VariableWidth attribute value VariableWidth attributes describe the width characteristics for a path ********************************************************************************************/ class VariableWidthAttrValue : public AttributeValue { CC_DECLARE_DYNAMIC(VariableWidthAttrValue) public: // Construction/Initialisation VariableWidthAttrValue(ValueFunction *pValueFunction = NULL); ~VariableWidthAttrValue(); static BOOL Init(void); public: // Overridden access methods virtual void Render(RenderRegion *pRegion, BOOL Temp = FALSE); virtual void Restore(RenderRegion *pRegion, BOOL Temp); virtual void SimpleCopy(AttributeValue *pValue); virtual NodeAttribute *MakeNode(); virtual BOOL IsDifferent(AttributeValue *pAttr); virtual VariableWidthAttrValue &operator=(VariableWidthAttrValue &Attrib); virtual INT32 operator==(const VariableWidthAttrValue &Attrib); public: // Specialised methods void SetWidthFunction(VariableWidthID PredefinedFuncID); void SetWidthFunction(ValueFunction *pNewFunction); ValueFunction *GetWidthFunction(void) { return(WidthFunction); }; VariableWidthID GetWidthFunctionID(void) { return(PredefinedFunctionID); }; private: VariableWidthID PredefinedFunctionID; ValueFunction *WidthFunction; }; /*********************************************************************************************** > class AttrVariableWidth : public NodeAttribute Author: Jason_Williams (Xara Group Ltd) Created: 7/1/97 Purpose: VariableWidth attribute VariableWidth attributes are very simple, and merely contain a VariableWidthAttrValue, which is the entity which holds all the info and does all the work. ***********************************************************************************************/ class AttrVariableWidth : public NodeAttribute { CC_DECLARE_DYNCREATE(AttrVariableWidth) // the stroke path-processor needs access to our value. friend class PathProcessorStroke; public: // Constructors AttrVariableWidth(); AttrVariableWidth(Node *ContextNode, AttachNodeDirection Direction, BOOL Locked = FALSE, BOOL Mangled = FALSE, BOOL Marked = FALSE, BOOL Selected = FALSE); public: virtual void Render(RenderRegion *pRender); virtual void CopyNodeContents(AttrVariableWidth *NodeCopy); virtual void PolyCopyNodeContents(NodeRenderable* pNodeCopy); virtual INT32 operator==(const NodeAttribute& NodeAttrib); virtual Node *SimpleCopy(); virtual UINT32 GetAttrNameID(void); virtual AttrIndex GetAttributeIndex () { return ATTR_VARWIDTH; } virtual void GetDebugDetails(StringBase *Str); virtual UINT32 GetNodeSize() const; virtual BOOL WritePreChildrenWeb(BaseCamelotFilter *pFilter); virtual BOOL WritePreChildrenNative(BaseCamelotFilter *pFilter); virtual AttributeValue* GetAttributeValue() { return(&Value); }; BOOL DoBecomeA(BecomeA* pBecomeA, Node* pParent); BOOL HasActiveValueFunction(); protected: VariableWidthAttrValue Value; }; /*********************************************************************************************** > class StrokeAttrRecordHandler : public CamelotRecordHandler Author: Jason_Williams (Xara Group Ltd) Created: 7/1/97 Purpose: Handles the reading of all Stroke attribute records in the v2 file format This includes StrokeType Attributes and VariableWidth attributes ***********************************************************************************************/ class CXaraFileRecord; class StrokeAttrRecordHandler : public CamelotRecordHandler { CC_DECLARE_DYNAMIC(StrokeAttrRecordHandler); public: StrokeAttrRecordHandler() : CamelotRecordHandler() {} ~StrokeAttrRecordHandler() {} // functions that must be implemented. virtual UINT32 *GetTagList(); virtual BOOL HandleRecord(CXaraFileRecord *pCXaraFileRecord); // handling of atomic TAG_STROKEDEFINITION tags virtual BOOL BeginSubtree(UINT32 Tag); virtual BOOL EndSubtree(UINT32 Tag); #ifdef XAR_TREE_DIALOG virtual void GetRecordDescriptionText(CXaraFileRecord* pRecord, StringBase* pStr); #endif }; #endif