// $Id: rechcomp.cpp 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============================ */ // Implementation of the colour record handler class of the v2 file format #include "camtypes.h" #include "rechcomp.h" // CompressionRecordHandler for handling compression for v2 native/web files #if !defined(EXCLUDE_FROM_XARLIB) #include "colcomp.h" // Document colour component, handles import of colours //#include "camfiltr.h" // BaseCamelotFilter - version 2 native filter - in camtypes.h [AUTOMATICALLY REMOVED] #endif #include "cxftags.h" // TAG_DEFINERGBCOLOUR TAG_DEFINECOMPLEXCOLOUR //#include "cxfrec.h" // TAG_STARTCOMPRESSION TAG_STOPCOMPRESSION - in camtypes.h [AUTOMATICALLY REMOVED] DECLARE_SOURCE("$Revision: 1688 $"); // Declare smart memory handling in Debug builds #define new CAM_DEBUG_NEW // An implement to match the Declare in the .h file. CC_IMPLEMENT_DYNAMIC(CompressionRecordHandler,CamelotRecordHandler); //#if NEW_NATIVE_FILTER // New native filters, only available to those who need them at present /******************************************************************************************** > virtual UINT32* CompressionRecordHandler::GetTagList() Author: Neville_Humphrys (Xara Group Ltd) Created: 6/6/96 Inputs: - Returns: Ptr to a list of tag values, terminated by CXFRH_TAG_LIST_END Purpose: Provides the record handler system with a list of records handled by this handler SeeAlso: - ********************************************************************************************/ UINT32* CompressionRecordHandler::GetTagList() { static UINT32 TagList[] = {TAG_STARTCOMPRESSION, TAG_ENDCOMPRESSION, CXFRH_TAG_LIST_END}; return (UINT32*)&TagList; } /******************************************************************************************** > virtual BOOL CompressionRecordHandler::HandleRecord(CXaraFileRecord* pCXaraFileRecord) Author: Neville_Humphrys (Xara Group Ltd) Created: 6/6/96 Inputs: pCXaraFileRecord = ptr to record to handle Returns: TRUE if handled successfuly FALSE otherwise Purpose: Handles the given record. SeeAlso: - ********************************************************************************************/ BOOL CompressionRecordHandler::HandleRecord(CXaraFileRecord* pCXaraFileRecord) { ERROR2IF(pCXaraFileRecord == NULL,FALSE,"CompressionRecordHandler::HandleRecord pCXaraFileRecord is NULL"); // This should be unused and we should error if this is called ERROR2(FALSE,"CompressionRecordHandler::HandleRecord called! Use Streamed form instead"); BOOL ok = TRUE; switch (pCXaraFileRecord->GetTag()) { case TAG_STARTCOMPRESSION: // Ask the compression system to be turned on TRACEUSER( "Neville", _T("Turn compression on\n")); ok = SetCompression(TRUE); break; case TAG_ENDCOMPRESSION: // Ask the compression system to be turned off TRACEUSER( "Neville", _T("Turn compression on\n")); ok = SetCompression(FALSE); break; default: ok = FALSE; ERROR3_PF(("CompressionRecordHandler::HandleRecord I don't handle records with the tag (%d)\n",pCXaraFileRecord->GetTag())); break; } return ok; } /******************************************************************************************** > virtual BOOL CompressionRecordHandler::HandleStreamedRecord(CXaraFile * pCXFile, UINT32 Tag,UINT32 Size,UINT32 RecordNumber) Author: Neville_Humphrys (Xara Group Ltd) Created: 7/6/96 Inputs: pCXFile = access to the CXaraFile class Tag = the tag value Size = size of record RecordNumber = the record number in the file Returns: TRUE if handled ok FALSE otherwise Purpose: This is the streamed record handler. It is used when Errors: - SeeAlso: - ********************************************************************************************/ BOOL CompressionRecordHandler::HandleStreamedRecord(CXaraFile * pCXFile, UINT32 Tag,UINT32 Size,UINT32 RecordNumber) { ERROR2IF(Tag <= 0,FALSE,"CompressionRecordHandler::HandleStreamedRecord Tag is negative!"); BOOL ok = TRUE; switch (Tag) { case TAG_STARTCOMPRESSION: // Ask the compression system to be turned on TRACEUSER( "Neville", _T("Turn compression on\n")); ok = SetCompression(TRUE); break; case TAG_ENDCOMPRESSION: // Ask the compression system to be turned off TRACEUSER( "Neville", _T("Turn compression off\n")); ok = SetCompression(FALSE); break; default: ok = FALSE; ERROR3_PF(("CompressionRecordHandler::HandleStreamedRecord I don't handle records with the tag (%d)\n",Tag)); break; } return ok; } /******************************************************************************************** > virtual BOOL CompressionRecordHandler::IsStreamed(UINT32 Tag) Author: Neville_Humphrys (Xara Group Ltd) Created: 7/6/96 Inputs: The tag of the record Returns: TRUE if this is a streamed record FALSE otherwise Purpose: Function to find out if the record is streamed or not. Errors: - SeeAlso: - ********************************************************************************************/ BOOL CompressionRecordHandler::IsStreamed(UINT32 Tag) { // We don't want these records read in or handled by any outsiders as the ZLib code // reads things like the CRC and uncompressed size itself when compression is stopped return TRUE; } /******************************************************************************************** > virtual void CompressionRecordHandler::GetRecordDescriptionText(CXaraFileRecord* pRecord,StringBase* pStr) Author: Neville_Humphrys (Xara Group Ltd) Created: 12/6/96 Inputs: pRecord = ptr to a record pStr = ptr to string to update Returns: - Purpose: This provides descriptions for the compression on and off records. Errors: - SeeAlso: - ********************************************************************************************/ #ifdef XAR_TREE_DIALOG void CompressionRecordHandler::GetRecordDescriptionText(CXaraFileRecord* pRecord,StringBase* pStr) { if (pStr == NULL || pRecord == NULL) return; // Call base class first // This outputs the tag and size CamelotRecordHandler::GetRecordDescriptionText(pRecord,pStr); UINT32 Tag = pRecord->GetTag(); TCHAR s[256]; switch (Tag) { case TAG_STARTCOMPRESSION: { // Show what a compression on record looks like // Read the version number UINT32 Version = 0L; pRecord->ReadUINT32(&Version); UINT32 Type = 0L; UINT32 MajorVersion = Version / 100; UINT32 MinorVersion = Version - MajorVersion * 100; camSprintf(s,_T("Compression type\t= %d\r\n"),Type); (*pStr) += s; camSprintf(s,_T("Compression version\t= %d.%d\r\n"),MajorVersion,MinorVersion); (*pStr) += s; break; } case TAG_ENDCOMPRESSION: { // Show what a compression off record looks like // Read the number of bytes read UINT32 Checksum = 0L; pRecord->ReadUINT32(&Checksum); camSprintf(s,_T("Compression checksum\t= %d\r\n"),Checksum); (*pStr) += s; UINT32 BytesRead = 0L; pRecord->ReadUINT32(&BytesRead); camSprintf(s,_T("Compression bytes read\t= %d\r\n"),BytesRead); (*pStr) += s; break; } } return; } #endif //#endif // NEW_NATIVE_FILTER