fraclist.cpp

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// $Id: fraclist.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.
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              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

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

// Kernel level parts of bitmap lists

/*
*/

#include "camtypes.h"
//#include "fraclist.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "list.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "errors.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "fillattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "bitmpinf.h"
#include "fillattr2.h"

CC_IMPLEMENT_MEMDUMP( CachedFractal, ListItem )
CC_IMPLEMENT_MEMDUMP( GlobalFractalList, List )

// Declare smart memory handling in Debug builds
#define new CAM_DEBUG_NEW

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

>   CachedFractal::CachedFractal()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    CachedFractal constructor

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

CachedFractal::CachedFractal()
{
    Fractal     = NULL;
    UsageCount  = 0;
    m_bIsFake   = FALSE;
}

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

>   CachedFractal::~CachedFractal()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    CachedFractal destructor

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

CachedFractal::~CachedFractal()
{
    if (IsFakeFractal())
    {
        if (Fractal->GetBitmap())
        {
            delete Fractal->GetBitmapRef()->GetBitmap();
            Fractal->GetBitmapRef()->SetBitmap(NULL);
        }

        delete Fractal;
        return;
    }
    
    if (UsageCount > 0)
        TRACEUSER( "Mike", _T("Deleting cached fractal while it's still in use\n"));

    if (Fractal)
    {
        GlobalFractalList* pFracList = GetApplication()->GetGlobalFractalList();
        BOOL StillUsed = FALSE;

        if (pFracList)
        {
            CachedFractal* pCachedFractal = (CachedFractal*)pFracList->GetHead();

            while (pCachedFractal != NULL)
            {
                OILBitmap* pBmp = NULL;
                if (pCachedFractal->GetBitmap())
                    pBmp = pCachedFractal->GetBitmap()->ActualBitmap;

                // Are the bitmaps the same ?
                if (Fractal->GetBitmap() && 
                    Fractal->GetBitmap()->ActualBitmap == pBmp )
                {
                    // This fractal bitmap is still being used
                    StillUsed = TRUE;
                    break;
                }

                pCachedFractal = (CachedFractal*)pFracList->GetNext(pCachedFractal);
            }   
        }

        if (Fractal->GetBitmap())
        {
            // Only delete the actual bitmap, if it's not used for any other fractals
            if (!StillUsed) 
            {
                delete Fractal->GetBitmapRef()->GetBitmap()->ActualBitmap;
                Fractal->GetBitmapRef()->GetBitmap()->ActualBitmap = NULL;
            }

            delete Fractal->GetBitmapRef()->GetBitmap();
            Fractal->GetBitmapRef()->SetBitmap(NULL);
        }

        delete Fractal;
    }
}

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

>   INT32 CachedFractal::operator==(const FillGeometryAttribute& Attrib)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    -

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

INT32 CachedFractal::operator==(const FillGeometryAttribute& Attrib)
{
    FillGeometryAttribute* CachedFrac = GetCachedFractal();
    FillGeometryAttribute* OtherFrac = (FillGeometryAttribute*)&Attrib;

    if (OtherFrac->GetRuntimeClass() != CachedFrac->GetRuntimeClass())
        return FALSE;

    return ( OtherFrac->IsSameAsCachedFractal(CachedFrac) );
}

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

>   void CachedFractal::SetCachedFractal(FillGeometryAttribute* NewFrac)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    -

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

void CachedFractal::SetCachedFractal(FillGeometryAttribute* NewFrac)
{
    CCRuntimeClass* ObjectType = NewFrac->GetRuntimeClass();
    FillGeometryAttribute* FracClone = (FillGeometryAttribute*)ObjectType->CreateObject();

    NewFrac->CacheFractalData(FracClone);

    KernelBitmap* Bmp = new KernelBitmap(NewFrac->GetBitmap()->ActualBitmap, TRUE);
    FracClone->GetBitmapRef()->SetBitmap(Bmp);
//  Bmp->IncUsageCount();

    Fractal = FracClone;
}

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

>   FillGeometryAttribute* CachedFractal::GetCachedFractal()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    -

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

FillGeometryAttribute* CachedFractal::GetCachedFractal()
{
    return Fractal;
}

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

>   void CachedFractal::IncUsageCount()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Outputs:    Increaments the usage count of this cached fractal.
    Purpose:    -

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

void CachedFractal::IncUsageCount()
{
    UsageCount++;
    TRACEUSER( "Mike", _T("Inc Cached Fractal @ %x, Usage to %d\n"),this, UsageCount);
}

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

>   void CachedFractal::DecUsageCount()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Outputs:    Decreaments the usage count of this cached fractal.
    Purpose:    -

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

void CachedFractal::DecUsageCount()
{
    UsageCount--;
    TRACEUSER( "Mike", _T("Dec Cached Fractal @ %x, Usage to %d\n"),this, UsageCount);
}

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

>   INT32 CachedFractal::GetSize()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Returns:    The memory used by this fractal.
    Purpose:    -

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

INT32 CachedFractal::GetSize()
{
    ERROR2IF(Fractal->GetBitmap() == NULL ||
             Fractal->GetBitmap()->ActualBitmap == NULL, 0, "GetSize called when bitmap is NULL");

    BitmapInfo Info;
    Info.MemoryUsed = 0;

    if (Fractal->GetBitmap() &&
        Fractal->GetBitmap()->ActualBitmap)
    {
        Fractal->GetBitmap()->ActualBitmap->GetInfo(&Info);
    }

    return Info.MemoryUsed;
}

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

>   KernelBitmap* CachedFractal::GetBitmap()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    26/8/96
    Returns:    The fractal bitmap 
    Purpose:    -

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

KernelBitmap* CachedFractal::GetBitmap()
{
    if (Fractal == NULL)
        return NULL;

    return Fractal->GetBitmap();
}

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

>   GlobalBitmapList::GlobalFractalList()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    GlobalFractalList constructor

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

GlobalFractalList::GlobalFractalList()
{
}

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

>   GlobalFractalList::~GlobalFractalList()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    GlobalFractalList destructor

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

GlobalFractalList::~GlobalFractalList()
{
    if (!IsEmpty())
    {
        TRACEALL( _T("Trying to delete global fractal list when it's not empty !!\n") );
        Destroy();
    }
}

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

>   void GlobalFractalList::Destroy()

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/2/97
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Destroy the contents of the fractal list

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

void GlobalFractalList::Destroy()
{
    ListItem* Fractal;
    while ((Fractal=RemoveHead())!=NULL)
        delete Fractal;
}


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

>   BOOL GlobalFractalList::Init()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/2/95
    Returns:    FALSE if failed.
    Purpose:    Initialise the GlobalFractalList

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

BOOL GlobalFractalList::Init()
{
    return TRUE;
}

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

>   static BOOL GlobalFractalList::DeInit()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/2/95
    Returns:    FALSE if failed.
    Purpose:    DeInitialise the GlobalFractalList. Static function so it finds the global
                fractal list first

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

BOOL GlobalFractalList::DeInit()
{
    GlobalFractalList* FracList = GetApplication()->GetGlobalFractalList();
    if (FracList)
        FracList->Destroy();
    return TRUE;
}

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

>   BOOL GlobalFractalList::AddFractal(FillGeometryAttribute* NewFractal)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Returns:    FALSE if this fractal already exits.
    Purpose:    Adds an item to the tail of the GlobalFractallist if it doesn't already
                exist.

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

BOOL GlobalFractalList::AddFractal(FillGeometryAttribute* NewFractal)
{
    CachedFractal* ExistingFrac = CheckFractalBitmap(NewFractal);

    if (ExistingFrac != NULL)
    {
        ExistingFrac->IncUsageCount();
        return FALSE;
    }

    CachedFractal* Fractal = new CachedFractal();

    if (Fractal == NULL)
        return FALSE;

    TRACEUSER( "Mike", _T("Adding Cached Fractal @ %x\n"),Fractal);

    Fractal->SetCachedFractal(NewFractal);
    Fractal->IncUsageCount();

    AddTail((ListItem*)Fractal);

    if (this != GetApplication()->GetGlobalFractalList())
        Fractal->MakeFakeFractal();

    TRACEUSER( "Mike", _T("Cached Fractal Count = %d\n"),GetFractalCacheCount());
    TRACEUSER( "Mike", _T("Cached Fractal Size  = %d\n"),GetFractalCacheSize());

    return(TRUE);
}

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

>   BOOL GlobalFractalList::RemoveFractal(FillGeometryAttribute* Frac)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Returns:    TRUE if the fractal was really removed (or doesn't exist)
    Purpose:    Called when a fractal is destroyed.

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

BOOL GlobalFractalList::RemoveFractal(FillGeometryAttribute* Frac)
{
    CachedFractal* ExistingFrac = CheckFractalBitmap(Frac);

    if (ExistingFrac == NULL)
        return TRUE;        // This will be the case when we delete the cached fractal

    ExistingFrac->DecUsageCount();

    if (ExistingFrac->GetUsageCount() <= 0)
    {
        TRACEUSER( "Mike", _T("Removing Cached Fractal @ %x\n"),ExistingFrac);
        RemoveItem((ListItem*)ExistingFrac);
        delete ExistingFrac;

        return TRUE;
    }

    TRACEUSER( "Mike", _T("Cached Fractal Count = %d\n"),GetFractalCacheCount());
    TRACEUSER( "Mike", _T("Cached Fractal Size  = %d\n"),GetFractalCacheSize());

    return FALSE;   // The fractal is still there
}

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

>   CachedFractal* GlobalFractalList::CheckFractalBitmap(FillGeometryAttribute*)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Returns:    The existing Fractal if one exists.
    Purpose:    Checks to see if this fractal fill is already in the list.

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

CachedFractal* GlobalFractalList::CheckFractalBitmap(FillGeometryAttribute* FractalFill)
{
    ListItem* Fractal = GetHead();
    while (Fractal!=NULL)
    {
        // Are the fractals the same ?
        if ( *((CachedFractal*)Fractal) == *FractalFill )
            return ((CachedFractal*)Fractal);
        
        Fractal = GetNext(Fractal);
    }   
    return NULL;
}

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

>   INT32 GlobalFractalList::GetFractalCacheCount()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    30/3/94
    Returns:    The total number of cached fractals.
    Purpose:    Calculates the total number of cached fractals.

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

INT32 GlobalFractalList::GetFractalCacheCount()
{
    return GetCount();
}

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

>   INT32 GlobalFractalList::GetFractalCacheSize()

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    30/3/94
    Returns:    The total memory used by the cached fractals.
    Purpose:    Calculates the total memory used by the cached fractals.

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

INT32 GlobalFractalList::GetFractalCacheSize()
{
    INT32 FracSize = 0;
    ListItem* Fractal = GetHead();
    while (Fractal != NULL)
    {
        FracSize += ((CachedFractal*)Fractal)->GetSize();
        Fractal = GetNext(Fractal);
    }   
    return FracSize;
}


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

>   void GlobalFractalList::GetDocumentFractalData(Document* pDoc, EnumFractalData *pData)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    30/3/94
    Inputs:     pDoc  = a pointer to a document
                pData = a pointer to a structure to fill
    Outputs:    pData is updated with information about the fractals used in this document
    Returns:    -
    Purpose:    Updates the fields in the EnumFractalData with information about fractals
                in the specified document

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

void GlobalFractalList::GetDocumentFractalData(Document* pDoc, EnumFractalData *pData)
{
    BitmapInfo Info;
    GlobalFractalList FoundList;

    if (pDoc != NULL)
    {
        // Now Scan this document's tree for any references to a bitmap
        Node* pNode = Node::DocFindFirstDepthFirst(pDoc);
        while (pNode != NULL)
        {
            // First of all is this a NodeHidden ?
            // If so we want to look at the actual hidden node it's pointing at,
            // and scan the subtree, for Hidden bitmap references.
            if (!pNode->IsNodeHidden())
            {
                if (pNode->IsAnAttribute())     // Is this an Attribute ?
                {
                    // Is it a Fractal Fill ?
                    if (((NodeAttribute*)pNode)->IsAFractalFill())
                    {
                        AttrFractalFill* pFrac = (AttrFractalFill*)pNode;
                        FillGeometryAttribute* pVal = (FillGeometryAttribute*)pFrac->GetAttributeValue();
                        BOOL NewFractal = FoundList.AddFractal(pVal);

                        if (NewFractal)
                        {
                            pData->Count++;

                            if (pVal->GetBitmap() &&
                                pVal->GetBitmap()->ActualBitmap)
                            {
                                pVal->GetBitmap()->ActualBitmap->GetInfo(&Info);
                                pData->Size += Info.MemoryUsed;
                            }
                        }
                    }
                }
            }

            // Move onto the next node in the tree
            pNode = pNode->DocFindNextDepthFirst(); 
        }
    }

    FoundList.Destroy();
}

---