bfxdlg.cpp

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// $Id: bfxdlg.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
----------------------------------

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under the terms of the GNU General Public License version 2 as published
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-----------------

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License described above, Xara Group Ltd grants to you certain additional
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The additional rights are to use, modify, and distribute the software
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=================================XARAHEADEREND============================
 */
// Handles the bitmap effects dialog

/*
*/

#include "camtypes.h"
//#include "bfxrc.h"
#include "bfxdlg.h"
//#include "bitmap.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "bmplist.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "oilprog.h"

#include "ccdc.h"       // specific #includes needed for kernel-rendered dialogues
#include "dlgcol.h"
//#include "fillval.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "grnddib.h"

//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "range.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "nodebmp.h"
#include "bitmpinf.h"
//#include "bmplist.h"
#include "bmpcomp.h"
//#include "fillattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "bitmapfx.h"
//#include "undoop.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "progress.h"
//#include "document.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "chapter.h"
#include "page.h"
//#include "spread.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "trans2d.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "rikdlg.h"
//#include "resource.h"
//#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "barsdlgs.h"         // for the bitmap effects bar control
#include "wrkrect.h"
#include "bubbleid.h"

//#include "will2.h"

// This is not compulsory, but you may as well put it in so that the correct version
// of your file can be registered in the .exe
DECLARE_SOURCE("$Revision: 1282 $");

// An implement to match the Declare in the .h file.
// If you have many classes, it is recommended to place them all together, here at the start of the file
CC_IMPLEMENT_DYNAMIC(BfxMsg, Msg)
CC_IMPLEMENT_DYNCREATE(BfxDlg, DialogTabOp)
CC_IMPLEMENT_DYNCREATE(BfxOp, UndoableOperation)   
CC_IMPLEMENT_MEMDUMP(BfxOpParam, OpParam)

// This will get Camelot to display the filename and linenumber of any memory allocations
// that are not released at program exit
#define new CAM_DEBUG_NEW

const CDlgMode BfxDlg::Mode = MODELESS; // Mode of the dialog  
const UINT32 BfxDlg::IDD = _R(IDD_BFXDLG); // Used to uniquely identify the tabbed dialog
                                                 // there is no actual resource associated with this ID.
BOOL BfxDlg::InteractiveBCC = TRUE;

/********************************************************************************************
>   BfxDlg::BfxDlg(): DialogTabOp(BfxDlg::IDD, BfxDlg::Mode) 
                     

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Purpose:    The Constructor of the DialogTabOp derived class simply sets modality of the
                dialog, and it's ID.

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



BfxDlg::BfxDlg(): DialogTabOp(BfxDlg::IDD, BfxDlg::Mode) 
{
    OpenPage = 0;
    pOriginal = NULL;
    pDestination = NULL;
    pPrevOriginal=NULL;
    pOrigInfo = NULL;
    Clean = FALSE;
    pFX = NULL;
    SetParameters();
    for (INT32 i = 0; i<=8; i++) Matrix[i]=(i==4)?1.0:0.0;
}        

/********************************************************************************************
>   BfxDlg::~BfxDlg()
                     

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Purpose:    Destructor

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

BfxDlg::~BfxDlg()
{
    if (pFX) delete pFX;
    if (pDestination) {TRACEUSER( "Alex", _T("Destructor deleting destination\n"));delete pDestination;}
    if (pOrigInfo) delete pOrigInfo;
}        

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

>   BOOL BfxDlg::OriginalChanged()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Invalidates area for original bitmap, marks no destination as yet
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::OriginalChanged()
{
    if (pPrevOriginal==pOriginal) return TRUE;
    pPrevOriginal=pOriginal;

    if (!pOrigInfo)
    {
        pOrigInfo = new BitmapInfo;
        if (!pOrigInfo) return FALSE; // error already set.
    }

    pOrigInfo->PixelWidth = 100;
    pOrigInfo->PixelHeight = 100;
    pOrigInfo->PixelDepth = 24;
    if (pOriginal && pOrigInfo) // Should always be true
    {
        pOriginal->ActualBitmap->GetInfo(pOrigInfo);
    }

    if (SetDirty() && (OpenPage != 0))
    {
        InvalidateGadget(_R(IDC_BFXDLG_ORIGREDRAW));
    }

    BROADCAST_TO_CLASS(DialogMsg(WindowID, DIM_OUT_OF_SPACE, _R(IDC_BFXDLG_ORIGREDRAW),
                       0, OpenPage) ,DialogOp);  // Pretty horrible bodge

    return FixOriginalComboBox();
}

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

>   BOOL BfxDlg::SetEffect(CCRuntimeClass * Effect)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     Effect = runtime class of effect to be used, or none.
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Choses the bitmap effect for processing
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::SetEffect(CCRuntimeClass * Effect)
{
    if (pFX)
    {
        if (pFX->GetRuntimeClass() == Effect) return TRUE;
        delete pFX;
        pFX = NULL;
    }
    if (Effect)
    {
        pFX = (AccusoftBitmapEffect *) (Effect->CreateObject());
        if (!pFX) return FALSE;
        return pFX->SetParameters(Param1, Param2, Param3, Matrix);
    }
    else return TRUE;
}

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

>   BOOL BfxDlg::SetDirty(BOOL Redraw=TRUE)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Clears the clean flag and deletes the effect
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::SetDirty(BOOL Redraw)
{
    if (!ClearDestination(Redraw)) return FALSE;
    Clean = FALSE;
    if (pFX)
    {
        delete pFX;
        pFX = NULL;
    }
    return TRUE;
}

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

>   BOOL BfxDlg::DestinationChanged()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Invalidates area for destination bitmap, marks no destination as yet
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::DestinationChanged()
{
    if (OpenPage)
    {
        InvalidateGadget(_R(IDC_BFXDLG_ORIGREDRAW2));
    }
    return TRUE;
}

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

>   BOOL BfxDlg::ClearDestination(BOOL Redraw=TRUE)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Marks no dest bitmap
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::ClearDestination(BOOL Redraw)
{
    if (pDestination)
    {
        delete pDestination;
        pDestination = NULL; //TRACEUSER( "Alex", _T("ClearDestination deleting dest\n"));
        return ((!Redraw) || (DestinationChanged()));
    }
    return TRUE;
}

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

>   BOOL BfxDlg::FindBitmap()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    pOriginal set
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Set pOriginal to point at a bitmap
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::FindBitmap()
{
//  pOriginal = NULL;

    Range Sel(*(GetApplication()->FindSelection()));

    Node* FirstSelectedNode = Sel.FindFirst(); 
    if (FirstSelectedNode != NULL) // No nodes selected so End
    {
        Node* CurrentNode = FirstSelectedNode;       
        Node* NextCurrent; 
        
        // Do all bitmaps. OK this should pick up the fill as well. Never mind
        while (CurrentNode != NULL)
        {
            NextCurrent = Sel.FindNext(CurrentNode);
            if  ( (CurrentNode->IsSelected()) && (CurrentNode->GetRuntimeClass() == CC_RUNTIME_CLASS(NodeBitmap)) ) 
            {         
                pOriginal = ((NodeBitmap *)(CurrentNode))->GetBitmap();
                return CheckOriginalBitmap();
            }
            CurrentNode = NextCurrent; 
        }

    } 

    // Find the first Fill Attribute in the selection
    AttrFillGeometry* pAttrNode = AttrFillGeometry::FindFirstSelectedAttr();

    while (pAttrNode != NULL)
    {
        if (pAttrNode->IsKindOf(CC_RUNTIME_CLASS(AttrBitmapColourFill)))
        {
            pOriginal = pAttrNode->GetBitmap();
            return CheckOriginalBitmap();
        }

        // Check the next fill
        pAttrNode = AttrFillGeometry::FindNextSelectedAttr();
    }

    return CheckOriginalBitmap();
}

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

>   BOOL BfxDlg::CheckOriginalBitmap()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    pOriginal set
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Ensures pOriginal points to a valid bitmap in this document
    Errors:     None at present
    SeeAlso:    -


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

BOOL BfxDlg::CheckOriginalBitmap()
{
    Document * pDoc = Document::GetSelected();

    // Get the bitmap list
    BitmapList* Bitmaps = NULL;
    if (pDoc) Bitmaps = pDoc->GetBitmapList();

    if (Bitmaps == NULL)
    {
        pOriginal = NULL;
        return OriginalChanged();
    }

    KernelBitmap * pBmp = (KernelBitmap *)(Bitmaps->GetHead());

    while (pBmp != NULL)
    {
        if (pBmp == pOriginal) return OriginalChanged(); // OK we've found it.
        pBmp = (KernelBitmap *) Bitmaps->GetNext(pBmp);
    }

    pOriginal = (KernelBitmap *)(Bitmaps->GetHead()); // possibly NULL but certainly on the list
    return OriginalChanged();
}

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

>   BOOL BfxDlg::FixOriginalComboBox()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Makes the combo box reflect the bitmaps within the document
    Errors:     None at present
    SeeAlso:    -

This routine is heavilly copied from one within the fill tool

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

BOOL BfxDlg::FixOriginalComboBox()
{
    // Find the doccomponent with the list of bitmaps in it
    Document * pDoc = Document::GetSelected();

    // Get the bitmap list
    BitmapList* Bitmaps = NULL;
    if (pDoc) Bitmaps = pDoc->GetBitmapList();

    if (Bitmaps == NULL)
        return TRUE;

    String_256 Str;

    if (OpenPage)
    {
        DeleteAllValues(_R(IDC_BFXDLG_ORIGCOMBO));
    }

    BOOL DoneMain = FALSE;
    INT32 SelIndex = 0;

    if (Bitmaps->GetCount() > 0)
    {
        INT32 Index = 0;

        ListItem* pBmp = Bitmaps->GetHead();

        while (pBmp != NULL)
        {
            Str = ((KernelBitmap*)pBmp)->ActualBitmap->GetName();
            if (OpenPage)
            {
                if (((KernelBitmap*)(pBmp)) == pOriginal)
                {
                    SetStringGadgetValue(_R(IDC_BFXDLG_ORIGCOMBO),&Str, FALSE, -1);
                    DoneMain = TRUE;
                    SelIndex=Index;
                }
                SetStringGadgetValue(_R(IDC_BFXDLG_ORIGCOMBO),&Str,FALSE, Index++);
            }
            pBmp = Bitmaps->GetNext(pBmp);
        }
    }
    else
    {
        Str.Load(_R(IDS_K_BFXDLG_DEFAULT));
        if (OpenPage) SetStringGadgetValue(_R(IDC_BFXDLG_ORIGCOMBO),&Str,TRUE, 0);
    }

    if (OpenPage)
    {
        Str.Load(_R(IDS_K_BFXDLG_DEFAULT));
        SetComboListLength(_R(IDC_BFXDLG_ORIGCOMBO));
        if (!DoneMain)
        {
            SetStringGadgetValue(_R(IDC_BFXDLG_ORIGCOMBO),&Str, FALSE, -1);
            SetSelectedValueIndex(_R(IDC_BFXDLG_ORIGCOMBO), 0);
        }
        else
        {
            SetSelectedValueIndex(_R(IDC_BFXDLG_ORIGCOMBO), SelIndex);
        }
    }
    return TRUE;
}


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

>   BOOL BfxDlg::ReadOriginalComboBox()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/12/94
    Inputs:     None
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Chooses a different bitmap from the combo box
    Errors:     None at present
    SeeAlso:    -

This routine is heavilly copied from one within the fill tool

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

BOOL BfxDlg::ReadOriginalComboBox()
{
    if (!OpenPage) return FALSE;

    Document * pDoc = Document::GetSelected();

    // Get the bitmap list
    BitmapList* Bitmaps = NULL;
    if (pDoc) Bitmaps = pDoc->GetBitmapList();

    if (Bitmaps == NULL)
        return TRUE;

    ListItem* pBmp = Bitmaps->GetHead();

    WORD Index;
    GetValueIndex(_R(IDC_BFXDLG_ORIGCOMBO),&Index); 

    for (INT32 i = 0; i < Index; i++)
    {
        if (pBmp == NULL)
            break;

        pBmp = Bitmaps->GetNext(pBmp);
    }

    pOriginal = (KernelBitmap*)pBmp; // Might be NULL (conceivably)
    return CheckOriginalBitmap();
}

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

>   BOOL BfxDlg::RenderBitmap(ReDrawInfoType* ExtraInfo, KernelBitmap * BitmapToUse)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     ExtraInfo - The structure that has the extra data we need to start rendering
                BitmapToUse - The bitmap to render
    Outputs:    None
    Returns:    TRUE if succeeded, FALSE & error set if not
    Purpose:    Fills a renderable control with a bitmap
    Errors:     None at present
    SeeAlso:    -

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

BOOL BfxDlg::RenderBitmap(ReDrawInfoType* ExtraInfo, KernelBitmap * BitmapToUse)
{
    // Go get a render region
    DocRect VirtualSize(0, 0, ExtraInfo->dx, ExtraInfo->dy);
    RenderRegion* pRender = CreateGRenderRegion(&VirtualSize, ExtraInfo);
    if (pRender!=NULL)
    {
        DialogColourInfo RedrawColours;     // Get a supplier for default dlg colours

        // A Grey colour [...hmmm, it's not a very grey grey any more... oragnge more like]
        DocColour Grey(255,200,0);

        // Render the attributes and the a rectangle
        pRender->SaveContext();
        pRender->SetLineColour(COLOUR_TRANS);

            // Draw a rectangle to fill in the background - Fill with Dialogue Background colour
        pRender->SetFillColour(RedrawColours.DialogBack());
        pRender->DrawRect(&VirtualSize);
    
        if (BitmapToUse)
        {

            NodeBitmap NB;
            NodeBitmap * pNodeBitmap = &NB;
        
            if (!((pNodeBitmap == NULL) || (!pNodeBitmap->SetUpPath(12,12))))
            {
                // Get a new bitmap object for this node.
                pNodeBitmap->GetBitmapRef()->SetBitmap(BitmapToUse);
                        
                ENSURE(pNodeBitmap->GetBitmap()->ActualBitmap != NULL, "No bitmap object found!");
        
                DocRect BitmapSize(VirtualSize);
                BitmapInfo BMInfo;
                BitmapToUse->ActualBitmap->GetInfo(&BMInfo);
                if (BMInfo.PixelWidth==0) BMInfo.PixelWidth=1;
                if (BMInfo.PixelHeight==0) BMInfo.PixelHeight=1;

                double BMAspect = ((double)(BMInfo.PixelWidth))/((double)(BMInfo.PixelHeight));
                double RedrawAspect = ((double)(ExtraInfo->dx))/((double)(ExtraInfo->dy));

                if (BMAspect>RedrawAspect)
                {
                    // grey at top and bottom
                    INT32 NewHeight = (INT32)( 0.5 + ((double)(VirtualSize.Width()))/BMAspect);
                    if (NewHeight<1) NewHeight = 1;
                    BitmapSize.loy = (VirtualSize.Height()-NewHeight)/2;
                    BitmapSize.hiy = BitmapSize.loy + NewHeight;
                }
                else
                {
                    // grey on left and right
                    INT32 NewWidth = (INT32)( 0.5 + ((double)(VirtualSize.Height()))*BMAspect);
                    if (NewWidth<1) NewWidth = 1;
                    BitmapSize.lox = (VirtualSize.Width()-NewWidth)/2;
                    BitmapSize.hix = BitmapSize.lox + NewWidth;
                }

                // And set this in our bitmap node
                pNodeBitmap->CreateShape(BitmapSize);
                    
                pNodeBitmap->Render(pRender);
            }
        }

        pRender->RestoreContext();

        // Get rid of the render region
        DestroyGRenderRegion(pRender);
    }
    return TRUE;
}

/********************************************************************************************
>   MsgResult BfxDlg::Message( Msg* Message)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Message: The message 

    
    Returns:    OK            Message handled ok (return this even if you don't need to 
                              respond to the message). 

                FAIL          Something terrible happened whilst processing the message
                              eg. we ran out of memory. You must set ERROR if you
                              are returning this value. 

                EAT_MSG       The Message was handled ok but don't send it to any
                              more MessageHandlers. 

    Purpose:    This is the message handler for the BfxDlg
     
********************************************************************************************/


MsgResult BfxDlg::Message( Msg* Message)
{
    if (IS_OUR_DIALOG_MSG(Message))
    {
        DialogMsg* Msg = ((DialogMsg*) Message); 
        
        BOOL EndDialog = FALSE;     // TRUE if we should quit the dialog
        BOOL CommitValues = FALSE;  // TRUE if we should commit the dialog values

        CDlgResID ThePage = Msg->PageID;

        if (ThePage == 0) switch (Msg->DlgMsg)
        {
            case DIM_CREATE:
                OpenPage=0;
                pOriginal=NULL;
                TalkToPage(0);
                FindBitmap();
                FixOriginalComboBox();
                SetDirty();
                break;
            
            case DIM_COMMIT:        // Want to commit and quit
                EndDialog = TRUE;
                CommitValues = TRUE; 
                ThePage = OpenPage;
                break;

            case DIM_SOFT_COMMIT:   // Want to commit
                CommitValues = TRUE; 
                ThePage = OpenPage;
                break; 

            case DIM_CANCEL:        // Want to quit
                ThePage = OpenPage;
                EndDialog = TRUE;
                break;

        }

        // These are common to all pages, and get passed on to the pages themselves
        switch (Msg->DlgMsg)
        {
            case DIM_SET_ACTIVE:
                OpenPage = Msg->PageID;
                TalkToPage(Msg->PageID);
                CheckOriginalBitmap();
                FixOriginalComboBox();
                SetDirty();
                break;

            case DIM_REDRAW :
                // This is where all the redrawing is done
                // Which control in the window is sending the redraw message (if there are many
                // grdraw controls you can tell which is which from the Gadget ID
                TalkToPage(Msg->PageID);
                switch (Msg->GadgetID)
                {
                    // Draw the redraw_me control in here
                    case _R(IDC_BFXDLG_ORIGREDRAW) :
                    {
                        RenderBitmap((ReDrawInfoType*) Msg->DlgMsgParam, pOriginal);
                        break;
                    }
                    case _R(IDC_BFXDLG_ORIGREDRAW2) :
                    {
                        RenderBitmap((ReDrawInfoType*) Msg->DlgMsgParam, pDestination);
                        break;
                    }
                }
                break;
            
            case DIM_SELECTION_CHANGED:
                TalkToPage(Msg->PageID);
                switch (Msg->GadgetID)
                {
                    // Draw the redraw_me control in here
                    case _R(IDC_BFXDLG_ORIGCOMBO) :
                    {
                        ReadOriginalComboBox();
                        break;
                    }
                }
                break;                                                 

        }

        // Determine from what page the message originated
        if (ThePage) switch (ThePage)
        {
            case _R(IDD_BFXDLG_PG1):
                HandleFlipAndRotateMsg(Msg, &CommitValues, &EndDialog); 
                break;
            case _R(IDD_BFXDLG_PG2):
                HandleResizeMsg(Msg, &CommitValues, &EndDialog); 
                break;
            case _R(IDD_BFXDLG_PG3):
                HandleBrightnessAndContrastMsg(Msg, &CommitValues, &EndDialog); 
                break;
            case _R(IDD_BFXDLG_PG4):
                HandleDitherMsg(Msg, &CommitValues, &EndDialog); 
                break;
            case _R(IDD_BFXDLG_PG5):
                HandleSpecialEffectsMsg(Msg, &CommitValues, &EndDialog); 
                break;
            case _R(IDD_BFXDLG_PG6):
                HandleAlchemistMsg(Msg, &CommitValues, &EndDialog); 
                break;
            default:
                ERROR3("Message from unknown tab dialog page"); 
        }

        // Commit values here
        if (CommitValues)
        {
            if (pOriginal)
            {
                if (pFX)
                {
                    if (!Clean)
                    {
                        ClearDestination();
                        String_64 ProcessMessage(_R(IDS_BFXDLG_PROCESSING));
                        // Bodge to avoid progress bar on interactive B&C
                        if (Msg->DlgMsg==DIM_COMMIT || Msg->DlgMsg==DIM_SOFT_COMMIT)
                        {
                            BeginSlowJob(100, FALSE, &ProcessMessage);
                            ContinueSlowJob();
                        }
                        pFX->SetParameters(Param1, Param2, Param3, Matrix);
                        pDestination = pFX->GetProcessedBitmap(pOriginal);
                        if (Msg->DlgMsg==DIM_COMMIT || Msg->DlgMsg==DIM_SOFT_COMMIT)
                        {
                            ContinueSlowJob(99);
                            EndSlowJob();
                        }
                        if (!pDestination) InformError(); else
                        {
                            DestinationChanged();
                            Clean=TRUE;
                        }
                    }
                }
                else
                {
                    TRACEUSER( "Alex", _T("Wierd - he didn't actually ask for an effect..."));
                }
            }
        }

        // End dialog here
        if (EndDialog)  // Dialog communication over 
        {   
            if (pOriginal && CommitValues)
            {
                OpenPage = 0;
                TalkToPage(0);

                BfxOpParam param;
                param.ppBitmap = &pDestination;
            
                OpDescriptor* pOpDesc=OpDescriptor::FindOpDescriptor("BfxOp");
                ERROR3IF_PF(pOpDesc==NULL,("Couldn't find OPTOKEN_OPBFXOP op descriptor"));
                pOpDesc->Invoke((OpParam*)&param);
                // NULLs destination on success
            }

            ClearDestination();

            Close();           
//          TRACEUSER( "Alex", _T("Calling End()\n"));
            End();      // End of dialog 
        }
        //return (DLG_EAT_IF_HUNGRY(Msg));   // I return EAT_MSG unless the message needs to be sent to all dialogs 
    } else if (MESSAGE_IS_A(Message, SelChangingMsg))       // Selection changed - use new bitmap
    {
        if (OpenPage) TalkToPage(OpenPage);
        SelChangingMsg *Msg = (SelChangingMsg *) Message;
        switch ( Msg->State )
        {
            case SelChangingMsg::SelectionState::SELECTIONCHANGED:
            case SelChangingMsg::SelectionState::NODECHANGED:
//              pOriginal=NULL;
                FindBitmap();
                break;
        }
    } else if (MESSAGE_IS_A(Message, BitmapListChangedMsg))     // Selection changed - use new bitmap
    {
        if (OpenPage) TalkToPage(OpenPage);
        CheckOriginalBitmap();
        FixOriginalComboBox();
    } else if (MESSAGE_IS_A(Message, BfxMsg))
    {
        if (OpenPage) TalkToPage(OpenPage);
        pOriginal=((BfxMsg*)(Message))->pBitmap;
        CheckOriginalBitmap();
    }

    return DialogTabOp::Message(Message);
} 


// -----------------------------------------------------------------------------------------
// Message handlers for individual pages

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

>   void BfxDlg::HandleFlipAndRotateMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleFlipAndRotateMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    TalkToPage(_R(IDD_BFXDLG_PG1));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:
            SetLongGadgetValue(_R(IDC_BFXDLG_FLIPX), TRUE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_FLIPY), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_ROTATE90), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_ROTATE180), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_ROTATE270), FALSE); 
            break;

        case DIM_LFT_BN_CLICKED:
        case DIM_SELECTION_CHANGED:
            {
                switch (Msg->GadgetID)
                {
                    case _R(IDC_BFXDLG_FLIPX):
                    case _R(IDC_BFXDLG_FLIPY):
                    case _R(IDC_BFXDLG_ROTATE90):
                    case _R(IDC_BFXDLG_ROTATE180):
                    case _R(IDC_BFXDLG_ROTATE270):
                        SetDirty();
                        break;
                    default:
                        break;
                }
            }
            break;

        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_FLIPX))) SetEffect(CC_RUNTIME_CLASS(ABFXFlipX));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_FLIPY))) SetEffect(CC_RUNTIME_CLASS(ABFXFlipY));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_ROTATE90) )) SetEffect(CC_RUNTIME_CLASS(ABFXRotate90 ));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_ROTATE180))) SetEffect(CC_RUNTIME_CLASS(ABFXRotate180));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_ROTATE270))) SetEffect(CC_RUNTIME_CLASS(ABFXRotate270));
            }
            break;

    }
}

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

>   void BfxDlg::HandleResizeMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleResizeMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    static BOOL ReEntered = FALSE;
    BOOL RescanSize = FALSE;
    TalkToPage(_R(IDD_BFXDLG_PG2));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_SET_ACTIVE:
            ReEntered = FALSE; // Just in case we get out of sync
            break;

        case DIM_CREATE:
            FindBitmap();
            SetLongGadgetValue(_R(IDC_BFXDLG_INTERP), TRUE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_ASPECT), TRUE); 
            RescanSize=TRUE;
            break;

        case DIM_OUT_OF_SPACE: // BODGE!!
            if (Msg->GadgetID == _R(IDC_BFXDLG_ORIGREDRAW))
                RescanSize=TRUE;
            break;

        case DIM_SELECTION_CHANGED:
        case DIM_SLIDER_POS_SET:
        //case DIM_SLIDER_POS_CHANGING:
        case DIM_LFT_BN_CLICKED:
        case DIM_TEXT_CHANGED:             // Text changed 
            SetDirty();
            if ((GetLongGadgetValue(_R(IDC_BFXDLG_ASPECT),0,1)!=0) && !ReEntered)
            {
                INT32 NewX = GetLongGadgetValue(_R(IDC_BFXDLG_NEWXSIZE),0,10000000);
                INT32 NewY = GetLongGadgetValue(_R(IDC_BFXDLG_NEWYSIZE),0,10000000);
                switch (Msg->GadgetID)
                {
                    case _R(IDC_BFXDLG_NEWXSIZE):
                        if (pOrigInfo->PixelWidth)
                        {
                            ReEntered = TRUE;
                            SetLongGadgetValue(_R(IDC_BFXDLG_NEWYSIZE), (INT32)(0.5+ (
                                ((double)(pOrigInfo->PixelHeight))/((double)(pOrigInfo->PixelWidth))*((double)(NewX)) )));
                            ReEntered = FALSE;
                        }
                        break;
                
                    case _R(IDC_BFXDLG_NEWYSIZE):
                        if (pOrigInfo->PixelHeight)
                        {
                            ReEntered = TRUE;
                            SetLongGadgetValue(_R(IDC_BFXDLG_NEWXSIZE), (INT32)(0.5+ (
                                ((double)(pOrigInfo->PixelWidth))/((double)(pOrigInfo->PixelHeight))*((double)(NewY)) )));
                            ReEntered = FALSE;
                        }
                        break;

                    default:
                        break;
                }
            }
            break;
        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
                SetEffect(CC_RUNTIME_CLASS(ABFXResize));
                INT32 NewX = GetLongGadgetValue(_R(IDC_BFXDLG_NEWXSIZE),0,10000000);
                INT32 NewY = GetLongGadgetValue(_R(IDC_BFXDLG_NEWYSIZE),0,10000000);
                if (NewX<2) NewX = 2;
                if (NewY<2) NewY = 2;
                SetParameters(NewX, NewY, (INT32)(BOOL)(GetLongGadgetValue(_R(IDC_BFXDLG_INTERP),0,1)!=0));
                }
            break;
    }

    if (RescanSize && pOrigInfo)
    {
        ReEntered = TRUE;
        SetLongGadgetValue(_R(IDC_BFXDLG_ORIGXSIZE), pOrigInfo->PixelWidth);
        SetLongGadgetValue(_R(IDC_BFXDLG_NEWXSIZE),  pOrigInfo->PixelWidth);
        SetLongGadgetValue(_R(IDC_BFXDLG_ORIGYSIZE), pOrigInfo->PixelHeight);
        SetLongGadgetValue(_R(IDC_BFXDLG_NEWYSIZE),  pOrigInfo->PixelHeight);
        ReEntered = FALSE;
    }
}
/********************************************************************************************

>   void BfxDlg::HandleBrightnessAndContrastMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleBrightnessAndContrastMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    TalkToPage(_R(IDD_BFXDLG_PG3));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:
            SetGadgetRange(_R(IDC_BFXDLG_BRIGHTNESS), -127, 127, 1);
            SetGadgetBitmaps(_R(IDC_BFXDLG_BRIGHTNESS), _R(IDB_SLIDERBASE), _R(IDB_SLIDERSLIDER));
            SetGadgetRange(_R(IDC_BFXDLG_CONTRAST), -127, 127, 1);
            SetGadgetBitmaps(_R(IDC_BFXDLG_CONTRAST), _R(IDB_SLIDERBASE), _R(IDB_SLIDERSLIDER));
            SetGadgetRange(_R(IDC_BFXDLG_COLOUR), -127, 127, 1);
            SetGadgetBitmaps(_R(IDC_BFXDLG_COLOUR), _R(IDB_SLIDERBASE), _R(IDB_SLIDERSLIDER));
            SetLongGadgetValue(_R(IDC_BFXDLG_BRIGHTNESS), 0); 
            SetLongGadgetValue(_R(IDC_BFXDLG_CONTRAST), 0); 
            SetLongGadgetValue(_R(IDC_BFXDLG_COLOUR), 0); 
            break;
//      case DIM_SLIDER_POS_SET:
//      case DIM_SLIDER_POS_IDLE:
        case DIM_LFT_BN_CLICKED:
        case DIM_SELECTION_CHANGED:
            {
                switch (Msg->GadgetID)
                {
                    case _R(IDC_BFXDLG_BRIGHTNESS):
                    case _R(IDC_BFXDLG_CONTRAST):
                    case _R(IDC_BFXDLG_COLOUR):
                        SetDirty();
                        break;
                    default:
                        break;
                }
            }
            break;

        case DIM_SLIDER_POS_SET:
        case DIM_SLIDER_POS_IDLE:
        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
                INT32 Brightness = -GetLongGadgetValue(_R(IDC_BFXDLG_BRIGHTNESS),-127,127);
                INT32 Contrast = -GetLongGadgetValue(_R(IDC_BFXDLG_CONTRAST),-127,127);
                INT32 Colour = -GetLongGadgetValue(_R(IDC_BFXDLG_COLOUR),-127,127);
                if (Msg->DlgMsg == DIM_SLIDER_POS_SET || Msg->DlgMsg == DIM_SLIDER_POS_IDLE)
                {
                    if (InteractiveBCC)
                    {                   
                        if ((!pFX) || (!pFX->IsKindOf(CC_RUNTIME_CLASS(ABFXBrightnessContrast))) ||
                            (Brightness!=Param1) || (Contrast!=Param2) || (Colour!=Param3))
                        {
                            *pCommitValues = TRUE;
                            *pEndDialog = FALSE;
                            SetDirty(FALSE); // no redraw right now
                        }
                        else break;
                    }
                    else
                    {
                        SetDirty();
                        break;
                    }
                }
                SetEffect(CC_RUNTIME_CLASS(ABFXBrightnessContrast));
                SetParameters(Brightness, Contrast, Colour);
            }
            break;

    }
}
/********************************************************************************************

>   void BfxDlg::HandleDitherMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleDitherMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    TalkToPage(_R(IDD_BFXDLG_PG4));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:
            SetLongGadgetValue(_R(IDC_BFXDLG_BAYERMONO), TRUE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_HALFTONEMONO), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_DIFFUSIONMONO), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_BAYERCOLOUR), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_DIFFUSIONCOLOUR), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_POPULARITY), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_MAKEGREYSCALE), FALSE); 
            SetLongGadgetValue(_R(IDC_BFXDLG_OCTREECOLOUR), FALSE); 
            
//EnableGadget(_R(IDC_BFXDLG_DIFFUSIONCOLOUR), FALSE); // Accusoft library crashes
//EnableGadget(_R(IDC_BFXDLG_OCTREECOLOUR), FALSE); // Accusoft library crashes
            
            break;

        case DIM_LFT_BN_CLICKED:
        case DIM_SELECTION_CHANGED:
            {
                switch (Msg->GadgetID)
                {
                    case _R(IDC_BFXDLG_BAYERMONO):
                    case _R(IDC_BFXDLG_HALFTONEMONO):
                    case _R(IDC_BFXDLG_DIFFUSIONMONO):
                    case _R(IDC_BFXDLG_BAYERCOLOUR):
                    case _R(IDC_BFXDLG_DIFFUSIONCOLOUR):
                    case _R(IDC_BFXDLG_POPULARITY):
                    case _R(IDC_BFXDLG_MAKEGREYSCALE):
                    case _R(IDC_BFXDLG_OCTREECOLOUR):
                        SetDirty();
                        break;
                    default:
                        break;
                }
            }
            break;

        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_BAYERMONO)      )) SetEffect(CC_RUNTIME_CLASS(ABFXBayerMono));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_HALFTONEMONO)   )) SetEffect(CC_RUNTIME_CLASS(ABFXHalftoneMono));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_DIFFUSIONMONO)  )) SetEffect(CC_RUNTIME_CLASS(ABFXDiffusionMono));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_BAYERCOLOUR)    )) SetEffect(CC_RUNTIME_CLASS(ABFXBayerColour));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_DIFFUSIONCOLOUR))) SetEffect(CC_RUNTIME_CLASS(ABFXDiffusionColour));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_POPULARITY)     )) SetEffect(CC_RUNTIME_CLASS(ABFXPopularityColour));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_MAKEGREYSCALE)  )) SetEffect(CC_RUNTIME_CLASS(ABFXMakeGreyscale));
                if (GetBoolGadgetSelected(_R(IDC_BFXDLG_OCTREECOLOUR)      )) SetEffect(CC_RUNTIME_CLASS(ABFXOctree));
            }
            break;

    }
}

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

>   void BfxDlg::HandleSpecialEffectsMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleSpecialEffectsMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    TalkToPage(_R(IDD_BFXDLG_PG5));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:
            {
                SetLongGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO), 0); 
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM1), (INT32)(Matrix[0]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM2), (INT32)(Matrix[1]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM3), (INT32)(Matrix[2]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM4), (INT32)(Matrix[3]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM5), (INT32)(Matrix[4]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM6), (INT32)(Matrix[5]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM7), (INT32)(Matrix[6]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM8), (INT32)(Matrix[7]+0.5));
                SetLongGadgetValue(_R(IDC_BFXDLG_CUSTOM9), (INT32)(Matrix[8]+0.5));
                SetGadgetRange(_R(IDC_BFXDLG_AMOUNT), 0, 127, 1);
                SetGadgetBitmaps(_R(IDC_BFXDLG_AMOUNT), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT), 64); 

                DeleteAllValues(_R(IDC_BFXDLG_EFFECTCOMBO));

                String_256 Str0(_R(IDS_BFXDLG_EFFECTMENU0));
                String_256 Str1(_R(IDS_BFXDLG_EFFECTMENU1));
                String_256 Str2(_R(IDS_BFXDLG_EFFECTMENU2));
                String_256 Str3(_R(IDS_BFXDLG_EFFECTMENU3));
                String_256 Str4(_R(IDS_BFXDLG_EFFECTMENU4));
                String_256 Str5(_R(IDS_BFXDLG_EFFECTMENU5));
                String_256 Str6(_R(IDS_BFXDLG_EFFECTMENU6));
                String_256 Str7(_R(IDS_BFXDLG_EFFECTMENU7));
                String_256 Str8(_R(IDS_BFXDLG_EFFECTMENU8));
                String_256 Str9(_R(IDS_BFXDLG_EFFECTMENU9));
                String_256 Str10(_R(IDS_BFXDLG_EFFECTMENU10));
                String_256 Str11(_R(IDS_BFXDLG_EFFECTMENU11));
                String_256 Str12(_R(IDS_BFXDLG_EFFECTMENU12));
                String_256 Str13(_R(IDS_BFXDLG_EFFECTMENU13));
                String_256 Str14(_R(IDS_BFXDLG_EFFECTMENU14));
                String_256 Str15(_R(IDS_BFXDLG_EFFECTMENU15));
                String_256 Str16(_R(IDS_BFXDLG_EFFECTMENU16));
                String_256 Str17(_R(IDS_BFXDLG_EFFECTMENU17));
                String_256 Str18(_R(IDS_BFXDLG_EFFECTMENU18));
                String_256 Str19(_R(IDS_BFXDLG_EFFECTMENU19));
            
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str0,FALSE, 0);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str1,FALSE, 1);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str2,FALSE, 2);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str3,FALSE, 3);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str4,FALSE, 4);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str5,FALSE, 5);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str6,FALSE, 6);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str7,FALSE, 7);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str8,FALSE, 8);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str9,FALSE, 9);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str10,FALSE, 10);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str11,FALSE, 11);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str12,FALSE, 12);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str13,FALSE, 13);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str14,FALSE, 14);
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str15,FALSE, 15);
                if (IsUserName("Alex"))
                {
                    SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str16,FALSE, 16);
                    SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str17,FALSE, 17);
                    SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str18,FALSE, 18);
                    SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str19,FALSE, 19);
                }           
                
                
                SetStringGadgetValue(_R(IDC_BFXDLG_EFFECTCOMBO),&Str11, FALSE, -1);
                SetComboListLength(_R(IDC_BFXDLG_EFFECTCOMBO));
                SetSelectedValueIndex(_R(IDC_BFXDLG_EFFECTCOMBO), 11);
            }
            //break; RUN THROUGH

        case DIM_SLIDER_POS_SET:
        //case DIM_SLIDER_POS_CHANGING:
        case DIM_LFT_BN_CLICKED:
        case DIM_SELECTION_CHANGED:
        case DIM_TEXT_CHANGED:             // Text changed 
            {
                SetDirty();
                INT32 Choice = GetSelectedValueIndex(_R(IDC_BFXDLG_EFFECTCOMBO));
                BOOL GreyAmount = (Choice <= 9);
                BOOL GreyCustom = (Choice != 0);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM1), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM2), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM3), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM4), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM5), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM6), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM7), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM8), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_CUSTOM9), !GreyCustom);
                EnableGadget(_R(IDC_BFXDLG_AMOUNT), !GreyAmount);
                EnableGadget(_R(IDC_BFXDLG_AMOUNTTXT), !GreyAmount);
            }
            break;

        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
                INT32 Choice = GetSelectedValueIndex(_R(IDC_BFXDLG_EFFECTCOMBO));
                Matrix[0]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM1),-255.0,255.0);
                Matrix[1]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM2),-255.0,255.0);
                Matrix[2]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM3),-255.0,255.0);
                Matrix[3]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM4),-255.0,255.0);
                Matrix[4]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM5),-255.0,255.0);
                Matrix[5]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM6),-255.0,255.0);
                Matrix[6]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM7),-255.0,255.0);
                Matrix[7]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM8),-255.0,255.0);
                Matrix[8]=GetDoubleGadgetValue(_R(IDC_BFXDLG_CUSTOM9),-255.0,255.0);

                switch (Choice)
                {
                    case 0:
                    case 1:
                    case 2:
                    case 3:
                    case 4:
                    case 5:
                    case 6:
                    case 7:
                    case 8:
                    case 9:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSpecialEffect));
                        SetParameters((INT32) Choice);
                        break;
                    case 10:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) 127-GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127)), 1);
                        break;
                    case 11:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) 127-GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127)), 2);
                        break;
                    case 12:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) 127-GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127)), 3);
                        break;
                    case 13:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127))-127, 1);
                        break;
                    case 14:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127))-127, 2);
                        break;
                    case 15:
                        SetEffect(CC_RUNTIME_CLASS(ABFXSharpenBlur));
                        SetParameters(((INT32) GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127))-127, 3);
                        break;
                    case 16:
                    case 17:
                    case 18:
                    case 19:
                        SetEffect(CC_RUNTIME_CLASS(ABFXRemoveDither));
                        SetParameters((127-((INT32) GetLongGadgetValue(_R(IDC_BFXDLG_AMOUNT),0,127)))<<1, 30, Choice-16);
                        break;
                }                                           
            }

    }
}

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

>   void BfxDlg::HandleSpecialEffectsMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     Msg: The message sent from page 1 of the dialog
    Outputs:    -
    Returns:    -
    Purpose:    All messages generated from the tabbed dialog's page 1 get processed here
    Errors:     -
    Scope:      private
    SeeAlso:    BfxDlg::Message

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


void BfxDlg::HandleAlchemistMsg(DialogMsg* Msg, BOOL *pCommitValues, BOOL *pEndDialog)
{
    TalkToPage(_R(IDD_BFXDLG_PG6));  // The Coords Page identifier
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:
            {
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_HUE_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_SATURATION_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_VALUE_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_RAINBOW_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_VARIATION_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_SHAPES_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_STYLE_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_OPACITY_CHECK), TRUE); 
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_GRAIN_CHECK), TRUE); 

                SetGadgetRange    (_R(IDC_BFXDLG_ALC_HUE_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_HUE_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_HUE_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_SATURATION_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_SATURATION_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_SATURATION_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_VALUE_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_VALUE_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_VALUE_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_RAINBOW_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_RAINBOW_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_RAINBOW_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_VARIATION_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_VARIATION_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_VARIATION_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_SHAPES_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_SHAPES_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_SHAPES_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_STYLE_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_STYLE_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_STYLE_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_OPACITY_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_OPACITY_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_OPACITY_SLIDER), 64); 
                SetGadgetRange    (_R(IDC_BFXDLG_ALC_GRAIN_SLIDER), 0, 127, 1);
                SetGadgetBitmaps  (_R(IDC_BFXDLG_ALC_GRAIN_SLIDER), _R(IDB_QUALITYBASE), _R(IDB_QUALITYSLIDER));
                SetLongGadgetValue(_R(IDC_BFXDLG_ALC_GRAIN_SLIDER), 64); 

            }
            break; //RUN THROUGH

        case DIM_SLIDER_POS_SET:
        //case DIM_SLIDER_POS_CHANGING:
        case DIM_LFT_BN_CLICKED:
        case DIM_SELECTION_CHANGED:
        case DIM_TEXT_CHANGED:             // Text changed 
            {
                SetDirty();
            }
            break;

        case DIM_COMMIT:
        case DIM_SOFT_COMMIT:
            {
            }
            break;

    }
}


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

>   OpState BfxDlg::GetState(String_256*, OpDescriptor*)


    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    The standard GetState fn, does nothing
    Errors:     -
    SeeAlso:    -

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


OpState BfxDlg::GetState(String_256*, OpDescriptor*)
{    
    OpState OpSt;
    return(OpSt);
}
         
/********************************************************************************************

>   BOOL BfxDlg::Init()


    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    The standard Init fn for the op. 
    Errors:     -
    SeeAlso:    -

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


BOOL BfxDlg::Init()
{  
    GetApplication()->DeclareSection( "Bitmap Effects", 1);
    GetApplication()->DeclarePref( "Bitmap Effects", "Interactive Brightness & Contrast", &InteractiveBCC, FALSE, TRUE);
    
    return (RegisterOpDescriptor(
                                0,                         // Tool ID                    
                                _R(IDS_BFXDLGM),               // String resouirce ID        
                                CC_RUNTIME_CLASS(BfxDlg),  // Runtime class              
                                OPTOKEN_BFXDLG,            // Token string               
                                BfxDlg::GetState,          // GetState function          
                                0,  /* help ID */          // Help ID                    
                                _R(IDBBL_BITMAPEFFECTS),//_R(IDBBL_BFXDLG),   // Bubble ID                  
                                _R(IDD_BARCONTROLSTORE),       // Resource ID                
                                _R(IDC_BITMAPEFFECTS),         // Control ID                 
                                SYSTEMBAR_UTILITIES,       // Bar ID                     
                                TRUE,                      // Recieve system messages    
                                FALSE,                     // Smart duplicate operation  
                                TRUE,                      // Clean operation            
                                0,                         // No vertical counterpart
                                _R(IDS_BFXDLG_ONE),            // String for one copy only
                                GREY_WHEN_NO_CURRENT_DOC | DONT_GREY_WHEN_SELECT_INSIDE
                                )
                                
        && BfxOp::Init()); // HORRIBLE! But means I don't have to get a lock on main.cpp
} 

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

>   static void BfxMsg::OpenOrUse(KernelBitmap * pBitmap)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     pBitmap = bitmap to use
    Outputs:    -
    Returns:    -
    Purpose:    Open the bitmap effects dialog if it's not already open, else just uses that bitmap
    Errors:     -
    SeeAlso:    -

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

void BfxMsg::OpenOrUse(KernelBitmap * pBitmap)
{
    // Obtain a pointer to the op descriptor for the create operation 
    OpDescriptor* OpDesc = OpDescriptor::FindOpDescriptor(CC_RUNTIME_CLASS(BfxDlg));
    if (!OpDesc) return;

    // Only one live instance of the operation is allowed. It's probably a dialog 
    if (!MessageHandler::MessageHandlerExists(CC_RUNTIME_CLASS(BfxDlg)))
    {
        OpDesc->Invoke(&OpParam((INT32)pBitmap,(INT32)NULL));        
    }
    else
    {
        BROADCAST_TO_CLASS(BfxMsg(pBitmap),DialogOp);   
    }   
    return;
}

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

>   void BfxDlg::Do(OpDescriptor*)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Like all Do functions invokes the BfxDlg
    Errors:     -
    SeeAlso:    -

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

void BfxDlg::Do(OpDescriptor*)
{
    String_256 Title(_R(IDS_BFXDLG));
    SetName(&Title); 
    BOOL ok = Create(); // Create the TAB dialog please
    if (!ok)
    {
        /*InformError(blobby)*/;    // Display an error if this is a real dialog please
        OpenPage=0;
        End(); 
    }
    TalkToPage(0);
    SetStringGadgetValue(_R(ID_APPLY_NOW), _R(IDS_BFXDLG_TEST));
    SetStringGadgetValue(IDOK, _R(IDS_BFXDLG_INSERT));
    SetStringGadgetValue(IDCANCEL, _R(IDS_BFXDLG_CLOSE));
}

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

>   void BfxDlg::DoWithParam(OpDescriptor* pOp, OpParam* pParam)       

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/2/95
    Inputs:     OpDescriptor (unused)
    Outputs:    -
    Returns:    -
    Purpose:    Performs the BfxOp for the first time
    Errors:     -
    SeeAlso:    -

The first parameter should be a kernel bitmap to use or null to just bring the dialog up

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

void BfxDlg::DoWithParam(OpDescriptor* pOp, OpParam* pParam)
{
    Do(pOp);
    KernelBitmap * pBitmap = NULL;
    if (pParam) pBitmap = (KernelBitmap *)(void *)(pParam->Param1);
    if (pBitmap && pBitmap->IsKindOf(CC_RUNTIME_CLASS(KernelBitmap)))
    {
        pOriginal=pBitmap;
        TalkToPage(OpenPage);
        OriginalChanged();
    }
    return;
}


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

>   virtual BOOL BfxDlg::RegisterYourPagesInOrderPlease()


    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/02/95
    Inputs:     -
    Outputs:    -
    Returns:    return TRUE if all calls to AddAPage returned TRUE
    Purpose:    This virtual function will get called to give you a chance to add pages to your
                DialogTabOp. This function will usually make multiple calls to AddAPage to 
                register the initial set of pages to be contained in the tab dialog. The pages
                should all be the same size and be registered in the left to right order in which
                you wish them to appear. 

                This function get's called directly from the Create method, Don't call it 
                explicitly yourself. If you return FALSE from this method then the Create 
                method will fail. 

    Errors:     -
    SeeAlso:    DialogTabOp::AddPage
    SeeAlso:    DialogOp::Create

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


BOOL BfxDlg::RegisterYourPagesInOrderPlease()
{
    BOOL ok = AddAPage(_R(IDD_BFXDLG_PG1)) &&   
              AddAPage(_R(IDD_BFXDLG_PG2)) &&
              AddAPage(_R(IDD_BFXDLG_PG3)) &&
              AddAPage(_R(IDD_BFXDLG_PG4)) &&
              AddAPage(_R(IDD_BFXDLG_PG5)) &&
#ifdef _DEBUG
              ((!IsUserName("Alex")) || AddAPage(_R(IDD_BFXDLG_PG6))) &&
#endif
              TRUE;
    return (ok); 
}
 
   

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

>   BfxOp::BfxOp() 

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/2/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    BfxOp constructor
    Errors:     -
    SeeAlso:    -

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

BfxOp::BfxOp(): UndoableOperation()  
{                                
}
   
/********************************************************************************************

>   BOOL BfxOp::Init()

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/2/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if the operation could be successfully initialised 
                FALSE if no more memory could be allocated 
                
    Purpose:    BlobyOp initialiser method
    Errors:     ERROR will be called if there was insufficient memory to allocate the 
                operation.
    SeeAlso:    -

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

BOOL BfxOp::Init()
{  
    return (UndoableOperation::RegisterOpDescriptor(
                                            0,
                                            _R(IDS_BFXOP),
                                            CC_RUNTIME_CLASS(BfxOp),
                                            OPTOKEN_BFXOP,
                                            BfxOp::GetState,
                                            0,  /* help ID */
                                            0,  /* bubble help ID */
                                            0   /* bitmap ID */)); 
}

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

>   OpState BfxOp::GetState(String_256*, OpDescriptor*)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/2/95
    Inputs:     -
    Outputs:    -
    Returns:    The state of the BfxOp
    Purpose:    For finding the BfxOp's state. 
    Errors:     -
    SeeAlso:    -

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

OpState BfxOp::GetState(String_256*, OpDescriptor*)
{    
    OpState OpSt;
    return(OpSt);
}
        
/********************************************************************************************

>   void BfxOp::DoWithParam(OpDescriptor* pOp, OpParam* pParam)    

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/2/95
    Inputs:     OpDescriptor (unused)
    Outputs:    -
    Returns:    -
    Purpose:    Performs the BfxOp for the first time
    Errors:     -
    SeeAlso:    -

Blatantly copied from BitFilt::DoImportBitmap

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

void BfxOp::DoWithParam(OpDescriptor* pOp, OpParam* pParam)
{               
    DocCoord DropPos;
    Spread * pSpread;
    BOOL ok=FALSE;
    
    if (!GetWorkingDoc()) return;
    
    if (!FindCentreInsertionPosition(&pSpread, &DropPos))
    {
        InformError();
        FailAndExecute();
        End();
        return;
    }

    // Get a new NodeBitmap object to import into.
    NodeBitmap *pNodeBitmap = new NodeBitmap;
    if ((pNodeBitmap == NULL) || (!pNodeBitmap->SetUpPath(12,12)))
    {
        InformError();      
        FailAndExecute();
        End();
        return;
    }

    KernelBitmap* pKB = *(((BfxOpParam *)(pParam))->ppBitmap);
    if (pKB == NULL)
    {
        // Bitmap is NULL, so the op must have failed
        delete pNodeBitmap;
        FailAndExecute();
        End();
        return;
    }
    
    // Put up a progress display/hourglass (FALSE => no delay, show it NOW!)
    BeginSlowJob(100, FALSE);
    *(((BfxOpParam *)(pParam))->ppBitmap) = NULL; // The bitmap is now the responsibility of this routine

    // The bitmap above is a temp bitmap, so we'll extract the OILBitmap (which will delete the KBmp),
    // and create a 'proper' kbmp to attach to the node
    OILBitmap* pOILBmp = pKB->ExtractOILBitmap();
    pKB = KernelBitmap::MakeKernelBitmap(pOILBmp, GetWorkingDoc());

    pNodeBitmap->GetBitmapRef()->Attach(pKB);

    if (pNodeBitmap->GetBitmap() != pKB)
    {
        // It didn't use the bitmap we gave it, so we can delete it
        delete pKB;
    }

    // First, set the rectangle to the right size for the bitmap...
    BitmapInfo Info;
    pNodeBitmap->GetBitmap()->ActualBitmap->GetInfo(&Info);

    DocRect BoundsRect;
    BoundsRect.lo.x = DropPos.x - (Info.RecommendedWidth/2);
    BoundsRect.lo.y = DropPos.y - (Info.RecommendedHeight/2);
    BoundsRect.hi.x = BoundsRect.lo.x + Info.RecommendedWidth;
    BoundsRect.hi.y = BoundsRect.lo.y + Info.RecommendedHeight;

    // And set this in our bitmap node
    pNodeBitmap->CreateShape(BoundsRect);

    // Apply some default attrs for the bitmap
    // This Must be done before the NodeBitmap is inserted into the tree
    if (!pNodeBitmap->ApplyDefaultBitmapAttrs(this))
    {
        goto EndOp;
    }
        
    // Insert the node
    if (!DoInsertNewNode(pNodeBitmap, pSpread, TRUE))
    {
        // It didn't work - delete the sub-tree we just created.
        delete pNodeBitmap;
        goto EndOp;
    }

    ok = TRUE;

EndOp:
    if (!ok)
    {
        FailAndExecute();
        InformError();
    }

    EndSlowJob();
    End();
}

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

>   BOOL BfxOp::FindCentreInsertionPosition(Spread** Spread, DocCoord* Position)

    Author:     Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/3/95
    Inputs:     -
    Outputs:    Spread:  The spread to place the clipboard objects on
                Position:The centre of the view (Spread coords)
    Returns:    TRUE if succeeded else FALSE
    Purpose:    Finds the centre insertion position for clipboard objects
    Errors:     ERROR2 in various situations
    Scope:      private
    SeeAlso:    -

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

BOOL BfxOp::FindCentreInsertionPosition(Spread** Spread, DocCoord* Position)
{
    // Let's chuck in a smattering of defensive programming
    ERROR3IF(Spread == NULL || Position == NULL, "Illegal NULL params");
    *Spread = NULL;
    *Position = DocCoord(0,0);  // A default value if we fail

    // ---------------------------------------------------------------------------------
    // Find out which spread is in the centre of the view 
    // this is the spread that the pasted objects will be placed on

    ERROR2IF((!Spread)||(!Position),FALSE,"Invalid call to FindCentreInsertionPoint()");
    // Obtain the current DocView
    DocView* CurDocView = GetWorkingDocView();

    ERROR2IF(!CurDocView, FALSE, "The current DocView is NULL"); 

    WorkRect WrkViewRect = CurDocView->GetViewRect();

    ERROR2IF((WrkViewRect.IsEmpty() || (!WrkViewRect.IsValid()) ), FALSE, "Invalid WorkRect");
    
    // Determine the centre of the view
    WorkCoord WrkCentreOfView; 
    WrkCentreOfView.x = WrkViewRect.lox + (WrkViewRect.Width()/2); 
    WrkCentreOfView.y = WrkViewRect.loy + (WrkViewRect.Height()/2);
    
    // FindEnclosing spread requires an OilCoord
    OilCoord OilCentreOfView = WrkCentreOfView.ToOil(CurDocView->GetScrollOffsets()); 

    // Find out which spread to insert the pasteboard objects onto
    (*Spread) = CurDocView->FindEnclosingSpread(OilCentreOfView);
    ERROR2IF(!(*Spread), FALSE, "No spread?!");

    // Phew
    // ---------------------------------------------------------------------------------
    // Now lets find the spread coordinate of the centre of the view
    DocRect DocViewRect = CurDocView->GetDocViewRect(*Spread);

    ERROR2IF( ( (DocViewRect.IsEmpty()) || !(DocViewRect.IsValid())), FALSE, "DocViewRect is invalid" );

    // Find the centre of the DocViewRect
    DocCoord DocCentreOfView; 
    DocCentreOfView.x = DocViewRect.lox + (DocViewRect.Width()/2); 
    DocCentreOfView.y = DocViewRect.loy + (DocViewRect.Height()/2);

    // Now convert from DocCoords to spread coords
    (*Spread)->DocCoordToSpreadCoord(&DocCentreOfView);

    // Finally, fill in the return value
    *Position = DocCentreOfView;
    
    return TRUE;  
}

---