// $Id: drawfltr.h 1282 2006-06-09 09:46:49Z 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. You should have received a copy of the GNU General Public License along with Xara LX (see the file GPL in the root directory of the distribution); if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ADDITIONAL RIGHTS ----------------- Conditional upon your continuing compliance with the GNU General Public License described above, Xara Group Ltd grants to you certain additional rights. The additional rights are to use, modify, and distribute the software together with the wxWidgets library, the wxXtra library, and the "CDraw" library and any other such library that any version of Xara LX relased by Xara Group Ltd requires in order to compile and execute, including the static linking of that library to XaraLX. In the case of the "CDraw" library, you may satisfy obligation under the GNU General Public License to provide source code by providing a binary copy of the library concerned and a copy of the license accompanying it. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // An input filter for importing RISC OS Draw format files. #ifndef INC_DRAWFLTR #define INC_DRAWFLTR //#include "ccfile.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "filters.h" - in camtypes.h [AUTOMATICALLY REMOVED] class Node; /******************************************************************************************** > class DrawFileHeader Author: Tim_Browse (Xara Group Ltd) Created: 18/11/93 Purpose: Holds the information contained in the header of an Acorn Draw file. SeeAlso: DrawObjectHeader; AcornDrawFilter ********************************************************************************************/ class DrawFileHeader { public: // Should be the string "Draw" char Ident[4]; // version number and name of program that created the Draw file UINT32 MajorVersion; UINT32 MinorVersion; char Creator[12]; // Bounding box of the whole draw file DocCoord BBoxLo; DocCoord BBoxHi; }; /******************************************************************************************** typedef DrawObjectType This is a simple type to decode the object types in an Acorn Draw file. ********************************************************************************************/ typedef INT32 DrawObjectType; /******************************************************************************************** > class DrawObjectHeader Author: Tim_Browse (Xara Group Ltd) Created: 18/11/93 Purpose: Contains the information contained in an object header of an Acorn Draw file. SeeAlso: DrawFileHeader; AcornDrawFilter ********************************************************************************************/ class DrawObjectHeader { public: // Type and size of object DrawObjectType Type; UINT32 Size; // Bounding box of this object DocCoord BBoxLo; DocCoord BBoxHi; }; // Various forward declarations for the AcornDrawFilter class class PathName; class Document; class NodePath; class Layer; class AttrLineWidth; class AttrStrokeColour; class AttrFillColour; class OpImportAcornDraw; class Page; class DrawPathHeader; /******************************************************************************************** > class AcornDrawFilter : public VectorFilter Author: Tim_Browse (Xara Group Ltd) Created: 13/10/93 Purpose: Encapsulates an RISC OS Draw input filter system. ********************************************************************************************/ class AcornDrawFilter : public VectorFilter { CC_DECLARE_DYNAMIC(AcornDrawFilter); public: AcornDrawFilter(); ~AcornDrawFilter(); BOOL Init(); // Works out if opening a file of this type requires a default document to be loaded // or does the file format supply the document. virtual BOOL IsDefaultDocRequired(const TCHAR* pcszPathName); INT32 HowCompatible(PathName& Filename, ADDR HeaderStart, UINT32 HeaderSize, UINT32 FileSize); BOOL DoImport(SelOperation *Op, CCLexFile*, Document *DestDoc, BOOL AutoChosen, ImportPosition *Pos = NULL, KernelBitmap** ppImportedBitmap = NULL, DocCoord* pPosTranslate = NULL, String_256* = NULL); BOOL DoExport(Operation*, CCLexFile*, PathName*, Document*, BOOL); private: BOOL PrepareToImport(); void CleanUpAfterImport(); // The file we are reading CCLexFile *DrawFile; // TRUE if the EOF has been reached BOOL eof; // The layer that objects are placed on Layer *pLayer; // The page that objects appear on Page *pPage; // The Node to which new objects are attached (may be a Layer or a Group node) Node *pNode; // TRUE if a complex path is being constructed BOOL ComplexPath; // TRUE if the path being constructed has not had any attributes added yet BOOL NoAttributes; // Co-ordinate transformations DocCoord Origin; // TransformCoord() - converts a DocCoord from Draw units (1/640 of a point) to // Camelot units (millipoints). (the factor 1000/640 is reduced to 25/16) void TransformCoord(DocCoord& C) { C.x *= 25; C.x /= 16; C.x += Origin.x; C.y *= 25; C.y /= 16; C.y += Origin.y; }; // Buffers to hold data read from the Draw file. DrawFileHeader FileHeader; DrawObjectHeader ObjectHeader; ADDR DataBuf; // Dynamically allocated when the file is read. UINT32 DataBufSize; UINT32 HeaderSize; // Not necessarily sizeof(DrawObjectHeader)! (Thanks, Acorn...) UINT32 DataSize; // Functions to read in and process the Draw objects BOOL ReadFileHeader(); BOOL ReadObjectHeader(); BOOL ReadObjectData(); BOOL ProcessObject(); BOOL ProcessPath(); BOOL ProcessGroup(); BOOL ProcessTaggedObject(); BOOL SkipObject(); BOOL AddAttributes(NodePath *pPath, DrawPathHeader *pHeader); // Used to update progress bar etc INT32 BytesRead; INT32 LastProgressUpdate; }; #endif