cxfnbmp.cpp

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// $Id: cxfnbmp.cpp 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
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distribution); if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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

>   cxfnbmp.cpp

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/06/96
    Purpose:    Implementation of an abstract class, holding code for exporting NodeBitmaps.

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

#include "camtypes.h"

#include "nodebmp.h"

//#include "camfiltr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxftags.h"
//#include "cxfdefs.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxfile.h"
//#include "cxfrec.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxfnbmp.h"

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

>   BOOL CXaraFileNodeBitmap::WritePreChildrenWeb(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap);
    BOOL CXaraFileNodeBitmap::WritePreChildrenNative(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap);

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/06/96
    Inputs:     pFilter - filter to save to
                pNodeBitmap - NodeBitmap to save
    Returns:    TRUE if successful, FALSE otherwise
    Purpose:    Saves a NodeBitmap record to the filter

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

BOOL CXaraFileNodeBitmap::WritePreChildrenWeb(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap)
{
    ERROR2IF(pFilter==NULL, FALSE, "parameter pFilter==NULL");
    ERROR2IF(pNodeBitmap==NULL, FALSE, "parameter pNodeBitmap==NULL");

    return WriteNodeBitmap(pFilter, pNodeBitmap);
}

BOOL CXaraFileNodeBitmap::WritePreChildrenNative(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap)
{
    ERROR2IF(pFilter==NULL, FALSE, "parameter pFilter==NULL");
    ERROR2IF(pNodeBitmap==NULL, FALSE, "parameter pNodeBitmap==NULL");

    return WriteNodeBitmap(pFilter, pNodeBitmap);
}

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

>   BOOL CXaraFileNodeBitmap::WriteNodeBitmap(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap)

    Author:     Andy_Hayward (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/06/96
    Inputs:     pFilter - filter to save to
                pNodeBitmap - NodeBitmap to save out
    Returns:    TRUE if successful, FALSE otherwise
    Purpose:    saves a NodeBitmap record to the filter

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

BOOL CXaraFileNodeBitmap::WriteNodeBitmap(BaseCamelotFilter *pFilter, NodeBitmap *pNodeBitmap)
{
    ERROR2IF(pFilter==NULL, FALSE, "parameter pFilter==NULL");
    ERROR2IF(pNodeBitmap==NULL, FALSE, "parameter pNodeBitmap==NULL");

    BOOL ok = TRUE;

    // save out the actual bitmap, and remember its record number
    INT32 BitmapRecordRef = 0;
    INT32 StartColourRecordRef = 0;
    INT32 EndColourRecordRef = 0;

    // Get the bitmap that the node references and hence we need to save.
    // Then get a reference to it. In the process this may save out the
    // bitmap definition, if it has not already been saved
    KernelBitmap *pBmp = pNodeBitmap->GetBitmap();
    // Complain if no bitmap was found  
    ERROR2IF(pBmp == NULL,FALSE,"CXaraFileNodeBitmap::WriteNodeBitmap pBmp is NULL");
    BitmapRecordRef = pFilter->WriteRecord(pBmp);
    ERROR2IF(BitmapRecordRef == 0,FALSE,"CXaraFileNodeBitmap::WriteNodeBitmap BitmapRecordRef is 0");

    // Do the same for the start and end colours (Contoning)
    // Only get a colour reference if they are present
    DocColour *pStartCol = pNodeBitmap->GetStartColour();
    if (pStartCol)
        StartColourRecordRef = pFilter->WriteRecord(pStartCol);
    DocColour *pEndCol = pNodeBitmap->GetEndColour();
    if (pEndCol)
        EndColourRecordRef = pFilter->WriteRecord(pEndCol);

    // BOOL Contoned = pNodeBitmap->GetApplyContoneColour();
    // The above flag may lie. If you have a 24bpp bitmap and have tried to apply a contone colour
    // and cancelled the operation, then this flag is set but there are no colours.
    // Check for the prescence of the colours and that they have been converted to colour references
    // ok. Only then, do we save a contoned bitmap.
    if (pStartCol != NULL && pEndCol != NULL &&
        StartColourRecordRef != 0 && EndColourRecordRef != 0 )
    {
        // Write out a contoned node bitmap record
        CamelotFileRecord Rec(pFilter,TAG_NODE_CONTONEDBITMAP, TAG_NODE_CONTONEDBITMAP_SIZE);
TRACEUSER( "Neville", _T("Write contoned node bitmap, bitmap reference %d, Start colour %d, EndColour %d\n"),BitmapRecordRef,StartColourRecordRef,EndColourRecordRef);
        if (ok) ok = Rec.Init();
        // Write out the encompassing rectangle
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[0]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[1]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[2]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[3]);
        // Write out the bitmap reference
        if (ok) ok = Rec.WriteReference(BitmapRecordRef);
        if (ok) ok = Rec.WriteReference(StartColourRecordRef);
        if (ok) ok = Rec.WriteReference(EndColourRecordRef);
        if (ok) ok = pFilter->Write(&Rec);
    }
    else
    {
        // Write out a normal node bitmap record
        CamelotFileRecord Rec(pFilter,TAG_NODE_BITMAP, TAG_NODE_BITMAP_SIZE);
TRACEUSER( "Neville", _T("Write node bitmap, bitmap reference %d\n"),BitmapRecordRef);
        if (ok) ok = Rec.Init();
        // Write out the encompassing rectangle
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[0]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[1]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[2]);
        if (ok) ok = Rec.WriteCoord(pNodeBitmap->Parallel[3]);
        // Write out the bitmap reference
        if (ok) ok = Rec.WriteReference(BitmapRecordRef);
        if (ok) ok = pFilter->Write(&Rec);
    }

    return ok;
}

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