fttyplis.h

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// $Id: fttyplis.h 1282 2006-06-09 09:46:49Z alex $
// Header for the controlling class of the v2 file format
/* @@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
----------------------------------

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-----------------

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=================================XARAHEADEREND============================
 */

// This class has been implemented completely inline for speed reasons
// It is called from every WriteXXXX function in the CXaraFileRecord class...

#ifndef INC_FTTYPLIS
#define INC_FTTYPLIS

//#include "fixmem.h" - in camtypes.h [AUTOMATICALLY REMOVED]

typedef enum
{
    FTT_BYTE = 1,
    FTT_UINT32,         // 2
    FTT_INT32,          // 3
    FTT_UINT16,         // 4
    FTT_INT16,          // 5
    FTT_FLOAT,          // 6
    FTT_DOUBLE,         // 7
    FTT_BINHEX,         // 8
    FTT_WCHAR,          // 9
    FTT_ASCII,          // A
    FTT_UNICODE,        // B
    FTT_COORD,          // C
    FTT_INTCOORD,       // D
    FTT_REFERENCE,      // E
    FTT_MAXTYPE         // F
} FTType;

// Now a couple of macros to make life easier in the write functions

#define ENTERWRITEFUNCTION(type)                            \
    BOOL bFTTLUnlock = FALSE;                               \
    if (m_pTypeList)                                        \
        bFTTLUnlock = m_pTypeList->AddToListAndLock(type);

#define LEAVEWRITEFUNCTION      \
    if (bFTTLUnlock)            \
        m_pTypeList->Unlock();

#define STORELENGTH(len)                \
    ((bFTTLUnlock) ? (m_pTypeList->StoreLength(len)) : (ok))

/********************************************************************************************

>   class FTTypeList : public CCObject

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/07/97
    Purpose:    Object used by CXaraFileRecord for recording type information while writing

********************************************************************************************/

class FTTypeList : public CCObject
{
    // Give my name in memory dumps
    // The matching implement macro is in cxfrec.cpp
    CC_DECLARE_DYNAMIC(FTTypeList);

public:
    FTTypeList()
    {
        m_pArray = NULL;
        m_Used = 0;
        m_bLock = FALSE;
        m_Length = 0;
    };

    virtual ~FTTypeList()
    {
        if (m_pArray)
            CCFree(m_pArray);
    };

    DWORD GetCount(void) { return(m_Used); };

    BOOL StoreLength(DWORD len)
    {
        // Ensure 4 bytes of space (chances are this is the last thing to be written)
        if (!Enlarge(4))
            return(FALSE);

        DWORD* pLen = (DWORD*)(m_pArray + m_Used);
        *pLen = len;
        m_Used += 4;
        return(TRUE);
    };
    
    BOOL AddToListAndLock(FTType Type)
    {
        if (m_bLock)
            return(FALSE);

        // Add the type to the list

        if (m_Used == m_Length)
        {
            if (!Enlarge())
                return(FALSE);
        }

        // This must exist now
        m_pArray[m_Used] = Type;
        m_Used++;

        m_bLock = TRUE;
        return(TRUE);
    };

    void Unlock(void) { m_bLock = FALSE; };

    BYTE* GetBuffer(void) { return(m_pArray); };

protected:
    // Ensures at least Size entries available
    // FALSE if failed
    BOOL Enlarge(DWORD Size = 16)
    {
        if ((m_pArray == NULL) ||
            ((m_Length - m_Used) < Size))
        {
            DWORD NewLength = m_Length + Size;
            BYTE* pNew = (BYTE*)CCRealloc(m_pArray, NewLength);

            if (pNew == NULL)
                return(FALSE);

            m_pArray = pNew;
            m_Length = NewLength;
        }
        return(TRUE);
    };

protected:
    DWORD m_Length;
    DWORD m_Used;
    BOOL m_bLock;
    BYTE* m_pArray;
};

#endif  // INC_FTTYPLIS

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