slice.cpp

Go to the documentation of this file.

// $Id: slice.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
by the Free Software Foundation.

Xara LX and its component source files are distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with Xara LX (see the file GPL in the root directory of the
distribution); if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


ADDITIONAL RIGHTS
-----------------

Conditional upon your continuing compliance with the GNU General Public
License described above, Xara Group Ltd grants to you certain additional
rights. 

The additional rights are to use, modify, and distribute the software
together with the wxWidgets library, the wxXtra library, and the "CDraw"
library and any other such library that any version of Xara LX relased
by Xara Group Ltd requires in order to compile and execute, including
the static linking of that library to XaraLX. In the case of the
"CDraw" library, you may satisfy obligation under the GNU General Public
License to provide source code by providing a binary copy of the library
concerned and a copy of the license accompanying it.

Nothing in this section restricts any of the rights you have under
the GNU General Public License.


SCOPE OF LICENSE
----------------

This license applies to this program (XaraLX) and its constituent source
files only, and does not necessarily apply to other Xara products which may
in part share the same code base, and are subject to their own licensing
terms.

This license does not apply to files in the wxXtra directory, which
are built into a separate library, and are subject to the wxWindows
license contained within that directory in the file "WXXTRA-LICENSE".

This license does not apply to the binary libraries (if any) within
the "libs" directory, which are subject to a separate license contained
within that directory in the file "LIBS-LICENSE".


ARRANGEMENTS FOR CONTRIBUTION OF MODIFICATIONS
----------------------------------------------

Subject to the terms of the GNU Public License (see above), you are
free to do whatever you like with your modifications. However, you may
(at your option) wish contribute them to Xara's source tree. You can
find details of how to do this at:
  http://www.xaraxtreme.org/developers/

Prior to contributing your modifications, you will need to complete our
contributor agreement. This can be found at:
  http://www.xaraxtreme.org/developers/contribute/

Please note that Xara will not accept modifications which modify any of
the text between the start and end of this header (marked
XARAHEADERSTART and XARAHEADEREND).


MARKS
-----

Xara, Xara LX, Xara X, Xara X/Xtreme, Xara Xtreme, the Xtreme and Xara
designs are registered or unregistered trademarks, design-marks, and/or
service marks of Xara Group Ltd. All rights in these marks are reserved.


      Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK.
                        http://www.xara.com/

=================================XARAHEADEREND============================
 */
// code to perform image slicing when selected from the menu

#include "camtypes.h"

//#include "barsdlgs.h"     //For _R(IDD_BARCONTROLSTORE)
//#include "resimmap.h"     //For _R(IDS_HTMLIMPORT_FILEDOWNLOAD)
#include "slice.h"

#include "ngcore.h"
#include "ngitem.h"

#include "xshelpid.h"       //For the help ID
//#include "helppath.h"
//#include "spread.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "simon.h"            // the string r%dc%d is in here
#include "progress.h"
#include "osrndrgn.h"

#include "giffiltr.h"       // for TI_GIFFilter
#include "bmpfiltr.h"
#include "pngfiltr.h"
#include "extfilts.h"

#include "exjpeg.h"         // jpeg export options

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

#include "mrhbits.h"        // for the bitmap render in to test if a slice is empty
#include "selall.h"         // for the select all op in the test if a slice is empty

#include "slicehelper.h"
//#include "sliceres.h"

#include "bmapprev.h"       // for setting the export type in the preview

#include "ngprop.h"
#include "ngsentry.h"

#include "webattr.h"        // for the URL attrib

// for the use of wix temple attribs
//#include "cxfrech.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "userattr.h"
#include "tmpltatr.h"

#include "desnotes.h"
#include <io.h>             // for _taccess()
#include "helpuser.h"       // for the SetNextMsgHelpContext function
//#include "andy.h"         //For _R(IDM_OVERWRITE)
//#include "resource.h"     //For _R(IDS_CANCEL)

#include "nodetxts.h"
#include "nodetxtl.h"
#include "nodetext.h"

//#include "mario.h"            // For _R(IDE_NOMORE_MEMORY) - Matt 12/11/2000


#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

DECLARE_SOURCE("$Revision: 1282 $");

CC_IMPLEMENT_DYNCREATE(OpSlice, OpMenuImport);

#define new CAM_DEBUG_NEW


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

>   CSlice::CSlice()

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/99
    Returns:    
    Purpose:    Creates a slice object either empty or pre-filled
    Errors:     -

********************************************************************************************/
CSlice::CSlice()
{
    top = bottom = left = right = 0;
    row = colm = -1;
    rowspan = colmspan = 1;
    rowheight = colmwidth = 0;
    name.Empty();
    FileTypeExtStr = "gif";
    deleteme = FALSE;
    IsNamedSlice = FALSE;
    ButtonNumber = 0;
    IsEmpty = FALSE;
    HasURL = FALSE;
    pFrameText = NULL;
    ExistsOnLayerState[0] = 0;
    ExistsOnLayerState[1] = 0;
    ExistsOnLayerState[2] = 0;
    ExistsOnLayerState[3] = 0;
}

CSlice::CSlice(INT32 Ax, INT32 Ay, INT32 Cx, INT32 Cy, String_256 ThisName, String_16 FileExt, BOOL Named)
{
    top = min(Ay, Cy);
    left = min(Ax, Cx);
    right = max(Ax, Cx);
    bottom = max(Ay, Cy);
    name = ThisName;
    row = colm = -1;
    rowspan = colmspan = 1;
    rowheight = colmwidth = 0;
    FileTypeExtStr = FileExt;
    deleteme = FALSE;
    IsNamedSlice = Named;
    ButtonNumber = 0;
    IsEmpty = FALSE;
    HasURL = FALSE;
    pFrameText = NULL;
    ExistsOnLayerState[0] = 0;
    ExistsOnLayerState[1] = 0;
    ExistsOnLayerState[2] = 0;
    ExistsOnLayerState[3] = 0;
}

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

>   void CSlice::SwapSpreadAndSliceCoords()

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    27/7/99
    Returns:    
    Purpose:    Reverses the y-axis to convert between spread co-ords and slice co-ords
                Call it again to swap back between co-ord systems.
    Errors:     -

********************************************************************************************/
void CSlice::SwapSpreadAndSliceCoords()
{
    INT32 temp = top;
    top = -bottom;
    bottom = -temp;
}

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

>   BOOL OpSlice::Init()

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/99
    Returns:    TRUE if worked, FALSE if failed (out of memory)
    Purpose:    Declares the OpDescriptor
    Errors:     -

********************************************************************************************/
BOOL OpSlice::Init()
{
    return RegisterOpDescriptor(
            0,                          // Tool ID
            _R(IDS_IMAGESLICE),                 // String resource ID
            CC_RUNTIME_CLASS(OpSlice),  // Runtime class
            OPTOKEN_IMAGESLICE,         // Token string
            GetState,                   // GetState function
            _R(IDH_Command_Import_from_Web),// help ID GTODO: Is this needed?
            _R(IDBBL_IMAGESLICE),           // bubble help
            _R(IDD_BARCONTROLSTORE),        // resource ID
            _R(IDC_IMAGESLICE),             // control ID
            SYSTEMBAR_FILE,             // Bar ID
            TRUE,                       // Receive system messages
            FALSE,                      // Smart duplicate operation
            TRUE,                       // Clean operation
            0,      // String for one copy only error
            (DONT_GREY_WHEN_SELECT_INSIDE | GREY_WHEN_NO_CURRENT_DOC) // Auto state flags
        );
    
}

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

>   void OpSlice::Do(OpDescriptor*)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/99
    Purpose:    Exports the current document as slices defined by named selections
    Errors:     -

********************************************************************************************/
void OpSlice::Do(OpDescriptor*)
{
    // there needs to be a spread
    Spread* pSelSpread = Document::GetSelectedSpread();
    if (pSelSpread == NULL)
        return;

    //  Let's set a variable in BmapPrevDlg which will be used to determine
    //  which of the tab controls should be enabled or disabled.
    BmapPrevDlg::m_bSlicingImage = TRUE;

    m_ErrorStr = "none";
    m_HTMLext = "htm";

    m_NumberOfButtons = 0;

    // init the export path - which probably isn't needed
    // but better safe than sorry etc...
    // set to .non so that any slices that are defined from this can be
    // found and redefined later. see UpdateSliceFileExts() - sjk
    m_PathName.SetPathName("c:\\untitled.non");

    m_InjectHTML = FALSE; // don't inject without thinking about it - you know it makes sense!

    m_ExportedHTMLOK = TRUE; // asumes the best :-)

    // start a slow job
    Progress LongJob;
    LongJob.Start();

    // test if we use design notes
    m_UsesDesignNotes = UsesDesignNotes();

    // calculate the background colour
    DocColour dcol = Page::GetPageColour();
    m_lRed = m_lGreen = m_lBlue = 255;

    BOOL HasBitmapBackground = FALSE;

    Layer * pLayer = pSelSpread->FindFirstPageBackgroundLayer();
    if (pLayer)
    {
        Node * pNode = SliceHelper::FindNextOfClass(pLayer, pLayer, CC_RUNTIME_CLASS(AttrFlatColourFill));
        if (pNode)
            dcol = *(((AttrFlatFill *)pNode)->GetStartColour());
        else
        {
            if (SliceHelper::FindNextOfClass(pLayer, pLayer, CC_RUNTIME_CLASS(AttrBitmapColourFill)))
                HasBitmapBackground = TRUE;
        }
    }

    dcol.GetRGBValue(&m_lRed, &m_lGreen, &m_lBlue);

    
    // calculate the bounds of the entire image
    // init the mosaic list which stores all the parts of the image

    CList <CSlice *, CSlice *> MosaicList;
    MosaicList.RemoveAll();

    // the bounds of the drawing
    DocRect SpreadBounds = BaseBitmapFilter::GetSizeOfDrawing(pSelSpread); // returns in spread co-ords ignoring silly layers
    
    // get the selection
    Range Sel(*(GetApplication()->FindSelection()));

    // set the range flags so it includes shadow and bevel manager nodes
    RangeControl rg = Sel.GetRangeControlFlags();
    rg.PromoteToParent = TRUE;
    Sel.Range::SetRangeControl(rg);
    BOOL UseWholeDrawing = TRUE;
    
    // get the size of the selection
    // if there is a selection use this as the area to export rather than the drawing area
    // which we will use if there is no selection made
    if (!Sel.IsEmpty())
    {
        SpreadBounds = Sel.GetBoundingRect();
        UseWholeDrawing = FALSE;
    }

    PixelAlignedInflate(&SpreadBounds); // pixel align the starting rect

    // find the defined slices
    NameGallery* pNameGallery = NameGallery::Instance();
    SGUsedNames* pNames = pNameGallery?NameGallery->GetUsedNames():NULL;

    if (!pNames)
    {
        InformWarning( _R(IDS_NOSLICES) );
        //  Reset:
        BmapPrevDlg::m_bSlicingImage = FALSE;
        return;
    }

    // make sure we are dealing with the most uptodate information
    pNameGallery->FastUpdateNamedSetSizes();

    // for each defined slice in the name gallery
    BOOL NoProblems = TRUE;
    BOOL AddedASlice = FALSE;
    BOOL OutsideSpread = FALSE;

    INT32 Attempts = 0; // first try with the large rects then if that fails try the smaller ones
    String_256 strName(TEXT("Empty"));
    String_256 Slice1ErrorStr = "";
    String_256 Slice2ErrorStr = "";
    INT32 SlicesDefinedInDrawing = 0;

    do
    {
        NoProblems = TRUE;
        AddedASlice = FALSE;
        OutsideSpread = FALSE;
        SlicesDefinedInDrawing = 0;

        // the original mosaic piece is the whole bounded image
        // which will be broken up
        TidyMosaicList(&MosaicList);
        MosaicList.AddHead(new CSlice(SpreadBounds.lox, SpreadBounds.loy, SpreadBounds.hix, SpreadBounds.hiy));

        SGNameItem* pItem = (SGNameItem*) pNames->GetChild();

        while (pItem != 0 && NoProblems)
        {
            // is the tick set in the name gallery to use this slice?
            BOOL UseThisSlice = TRUE;
            NamedTickboxProp * pSliceTick = (NamedTickboxProp *) pItem->GetProperty(1); // 1 is slices
            if (pSliceTick)
            {
                UseThisSlice = pSliceTick->GetState();
                if (UseThisSlice)
                    SlicesDefinedInDrawing++;
            }

            // dont use an unselected slice if it is not the whole drawing being exported
            if (!UseWholeDrawing && pItem->IsNoneSelected())
                UseThisSlice = FALSE;

            if (UseThisSlice)
            {
                DocRect r;
                r = pItem->GetSetBounds();          // (returned in spread co-ords)

                pItem->GetNameText(&strName);

                // expand for actual text story visible size
                ScanTextStorySliceBounds(strName, r);

                if (Attempts == 0)
                {
                    DocRect rLarge = ScanLargeSliceBounds(strName);
                    r = r.Union(rLarge); // use the large rects
                }

                // r must be in the spread bounds
                // if it is outside the bounds it should be ignored
                PixelAlignedInflate(&r);        // pixel align the slice

                // trim anything that just strays over the bounds
                r = r.Intersection(SpreadBounds);

                // cut the existing mosaic pieces by the edges of this new piece
                // which of course creates even more pieces
                if (r.IsValid() && r.Height() > 0 && r.Width() > 0)
                {
                    NoProblems = NoProblems && AddSlice(r.lox, r.loy, r.hix, r.hiy, &MosaicList, strName);
                    AddedASlice = TRUE;
                }
                else
                {
                    TRACEUSER( "SimonK", _T("Slice outside bounds of the drawing!!!\n"));
                }
            }

            if (NoProblems) pItem = (SGNameItem*) pItem->GetNext();
        }

        Attempts++;
        if (!NoProblems)
        {
            Slice1ErrorStr = m_ErrorStr;
            Slice2ErrorStr = strName;
        }

    } while (!NoProblems && Attempts < 2); // try twice , first with the max size slices, then with the smaller slices

/* Dont ask the question Asumme that the user will choose to have the shadows cut if they do overlap (sjk 20/12/00)
    if (Attempts == 2 && NoProblems && AddedASlice)
    {   // worked with the smaller rects but not with the larger ones

        // I need to force this message to reappear again if they click 'Help' - Matt 10/11/2000
        INT32 result = 3;
        while (result == 3)
        {
            result = AskQuestion(_R(IDS_SLICES_MAY_OVERLAP), _R(IDS_YES), _R(IDS_NO), _R(IDS_HELP));
            if (result == 2)
            {
                NoProblems = FALSE; // it is a problem if you say it is
                m_ErrorStr = Slice1ErrorStr; // restore the shapes that were causing problems for the first case
                strName = Slice2ErrorStr;
            }
            if (result == 3)
            {
                HelpUserTopic(_R(IDH_Alert_Exclude_peripheral_elements));
            }
        }
    }
*/
    POSITION Test = NULL;

    if (NoProblems && AddedASlice) 
    {
        // sort the mosaic using SortSlices()
        // it also merges small bits back together if it can
        SortSlices(&MosaicList, SpreadBounds);

        // mark which states exist
        m_FoundRolloverStates = ScanForRolloverStates(&MosaicList);

        BOOL ReplaceFiles = TRUE;
        BOOL FilesOverwriten = FALSE;
        do // loop to ask where to save to which may be asked more than once if they dont want
            // to overwrite files
        {

            // ask where to save the files
            // and find out which slice export type to use
            if (!SaveFileDlg())
            {
                // tidy up and leave if cancelled
                TidyMosaicList(&MosaicList);
                Error::ClearError();
                //  Reset:
                BmapPrevDlg::m_bSlicingImage = FALSE;
                return;
            }


            // cope with things being .html, which the BmapPrevDlg doesn't set correctly as its not 8.3
            String_256 temp = m_PathName.GetFileName(FALSE);
            INT32 dot = temp.FindNextChar(TCHAR ('.'));
            if (dot > 0)
            {
                String_256 end = "";
                temp.Split(&temp, &end, dot, FALSE);
                if (end.CompareTo(".html", FALSE) == 0)
                {
                    m_HTMLext = "html";
                    m_PathName.SetFileName(temp);
                }
            }

            CString ClickedFile(temp);
            ClickedFile += "." + m_HTMLext;

            ReplaceFiles = FileExists(ClickedFile);
            FilesOverwriten = FALSE;

            if (!ReplaceFiles)
            {
                // test if these names we are creating are already in existance
                Test = MosaicList.GetHeadPosition();
                while (Test && !FilesOverwriten)
                {
                    CSlice* pTestSlice = MosaicList.GetNext(Test);
                    CString TestName (pTestSlice->name);

                    // we dont know exactly what file type for each element will be
                    // but it is best to warn the user that they may be overwriting their files
                    FilesOverwriten = FileExists(TestName + ".gif");
                    if (!FilesOverwriten) FilesOverwriten = FileExists(TestName + ".jpg");
                    if (!FilesOverwriten) FilesOverwriten = FileExists(TestName + ".jpeg");
                    if (!FilesOverwriten) FilesOverwriten = FileExists(TestName + ".png");
                    if (!FilesOverwriten) FilesOverwriten = FileExists(TestName + ".bmp");
                }
            }

            if (FilesOverwriten && !ReplaceFiles)
            {
                // ask the user "This folder contains a graphic file with a conflicting name.
                // Do you want to overwrite any conflicting files in this folder?"
                if (InformWarning(_R(IDS_CONFLICTING_SLICE_FILENAMES), _R(IDS_OVERWRITE_GRAPHIC), _R(IDS_SAVE_ELSEWHERE)) == 1)
                    ReplaceFiles = TRUE;
            }

        } while (FilesOverwriten && !ReplaceFiles); // end of overwrite loop


        // The preview dlg wants to know the path of the image being
        // exported so give it the m_PathName
        BmapPrevDlg::m_pthExport = m_PathName;

        // set up the export options
        BitmapExportOptions * pExportOptions = NULL;
        BOOL ok = TRUE;

        ShowRolloverLayer(ALL_LAYERS);

        // WARNING SetUpExportOptions() actually 'new's the ExportOptions
        // so you will have to delete them or pass them to a function
        // that deletes them for you
        String_256 strExt = m_PathName.GetType();
        strExt.toLower();
        if (strExt.CompareTo("jpg") == 0)
        {
            JPEGExportFilter f;
            ok = f.SetUpExportOptions(&pExportOptions);
        }
        else
        if (strExt.CompareTo("bmp") == 0)
        {
            BMPFilter f;
            ok = f.SetUpExportOptions(&pExportOptions);
        }
        else
        if (strExt.CompareTo("png") == 0)
        {
            PNGFilter f;
            ok = f.SetUpExportOptions(&pExportOptions);
        }
        else
        //if (strExt == "gif")
        {
            TI_GIFFilter f;
            ok = f.SetUpExportOptions(&pExportOptions);
        }

        // the export options may have changed types
        // so ask the export dlg for the actual export options
        pExportOptions = BmapPrevDlg::m_pExportOptions;
        // take responsibility for the export options away from the bmp preview dlg
        BmapPrevDlg::m_pExportOptions = 0;

        // Cancelled from the export options dlg
        if (!ok)
        {
            if (pExportOptions)
            {
                delete pExportOptions;
            }
            // tidy up and leave
            TidyMosaicList(&MosaicList);
            Error::ClearError();
            //  Reset:
            BmapPrevDlg::m_bSlicingImage = FALSE;
            return;
        }

        // read the m_PathName back since
        // setting up the export options could
        // have changed this value
        m_PathName = BmapPrevDlg::m_pthExport;


        // clear the screen by calling an idle
        (DocView::GetSelected())->ForceRedraw();
        GetApplication()->OnIdle(TRUE);             // Phil 2/7/2004 YUK! What's wrong with ServiceRendering?

        // change the non-user defined slices to use the graphic type
        // just picked by the user in the SaveFileDlg
        UpdateSliceFileExts(&MosaicList);

        // mark any "empty" slices in the list
        // but not if we have a background bitmap
        if (!HasBitmapBackground)
            MarkEmptySlices(&MosaicList, SpreadBounds, pExportOptions);

        // export each section of the mosaic as a seperate graphic
        Test = MosaicList.GetHeadPosition();
        while (Test)
        {
            CSlice* pTestSlice = MosaicList.GetNext(Test);

            if (m_FoundRolloverStates && pTestSlice->IsNamedSlice)
                // export this slice as a rollover
                ExportRollOverSlice(pTestSlice, pExportOptions);
            else
                // do a normal slice
            {
                // only export the graphic for a none-empty slice
                if (!pTestSlice->IsEmpty)
                    ExportSliceGraphic(pTestSlice, pExportOptions, pTestSlice->name);
            }

            // This function calls DoExportWithParams() which used to
            // delete the export options (and not zero the pointer - tusk!)
            // Behaviour now changed by using DontLetFilterDeleteMyPointer()
            // so we can keep using the same export options, but of course we
            // must then delete them ourselves.
        }

        // tidy up our generated export options
        if (pExportOptions != 0)
        {
            delete pExportOptions;
            pExportOptions = 0;
        }

        // And clean up the image export options in the bitmap dialogue.
//      BmapPrevDlg::CancelTransparency ();

        // export the HTML to display the mosaic put back together
        // the name is that typed in but with the htm extension

        // build up the list of link names with each button
        // rather than just going on adding a number to the file
        // users want to not have to edit HTML, do it all for them!
        m_UsedShimGraphic = FALSE;
        PathName HTMLPath = m_PathName;
        HTMLPath.SetType(m_HTMLext);
        m_pLinkName = NULL;
        INT32 i = 0;
        String_256 LaunchString = HTMLPath.GetFileName();

        INT32 LinkEntries = max (m_NumberOfButtons, 1);
        m_pLinkName = new String_256[LinkEntries];

        if (m_pLinkName)
        {
            m_pLinkName[0] = HTMLPath.GetPath();

            INT32 FileNumber = 0;
            // fill the link names with default names if there are no URLs found
            for (i = 0; i < m_NumberOfButtons; i++)
            {
                m_pLinkName[i] = m_PathName.GetFileName(FALSE);

                CSlice * pTestSlice = GetButtonNumber (&MosaicList, i+1);
                if (pTestSlice && pTestSlice->ExistsOnLayerState[SELECTED])
                {
                    FileNumber++;

                    if (m_FoundRolloverStates && m_RolloverState[SELECTED].Exists && FileNumber > 1)
                    {
                        String_256 NewName;
                        NewName.MakeMsg(_R(IDS_HTML_NAME_SPEC), (LPCSTR) m_PathName.GetFileName(FALSE), FileNumber);
                        m_pLinkName[i] = NewName;
                    }
                }

                m_pLinkName[i] += ".";
                m_pLinkName[i] += m_HTMLext;
            }

            // scan the tree for any URLs used associated with the buttons in the Mosaic list
            // this will overwrite the defaults already set in m_pLinkName
            URLScan(m_pLinkName, &MosaicList);

            FileNumber = 0;

            // export each HTML file required
            if (m_RolloverState[SELECTED].Exists)
                for (i = 0; i < LinkEntries; i++)
                {
                    String_256 NewName = m_pLinkName[i];
                    String_256 Temp = "";

                    // dont try to create a file http://www.stuff...
                    NewName.Left(&Temp,5);
                    BOOL isURL = (Temp.CompareTo("http:", FALSE) == 0);
                    if (!isURL)
                    {
                        NewName.Right(&Temp,1);
                        isURL = (Temp.CompareTo("/") == 0);
                    }

                    CSlice * pTestSlice = GetButtonNumber (&MosaicList, i+1);
                    if (pTestSlice && pTestSlice->ExistsOnLayerState[SELECTED])
                    {
                        FileNumber++;

                        if (isURL)
                        {
                            NewName.MakeMsg(_R(IDS_HTML_NAME_SPEC), (LPCSTR) m_PathName.GetFileName(FALSE), FileNumber);
                            NewName += ".";
                            NewName += m_HTMLext;
                        }

                        HTMLPath.SetPathName(NewName);

                        if (!ExportImageSliceHTML(&MosaicList, HTMLPath.GetPath(), i+1))
                            FailledToExportHTML (HTMLPath.GetPath());

                        // set file to launch if changed by the URL
                        if (FileNumber == 1)
                        {
                            LaunchString = HTMLPath.GetFileName();
                        }
                    }

                }
            else
                if (!ExportImageSliceHTML(&MosaicList, HTMLPath.GetPath()))
                    FailledToExportHTML (HTMLPath.GetPath());

            delete [] m_pLinkName;
            m_pLinkName = NULL;
        }

        // Export out the required shim
        if (m_UsedShimGraphic)
        {
            // also needs shim.gif exported
            // set up the path of where to save it
            PathName ShimPath = m_PathName;

            ShimPath.SetFileName("shim");
            ShimPath.SetType("gif");

            CCDiskFile File;
            if(File.open(ShimPath.GetPath(), (ios::in | ios::out | ios::binary)))
            {
                BYTE buf[] =   {0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00,
                                0x01, 0x00, 0x80, 0x00, 0x00, 0xFF, 0xFF, 0xFF,
                                0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x14,
                                0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00,
                                0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x44,
                                0x01, 0x00, 0x3B, 0x00  };

                // make the shim of the correct colour
                buf[13] = (BYTE) m_lRed;
                buf[14] = (BYTE) m_lGreen;
                buf[15] = (BYTE) m_lBlue;

                // write the file
                File.write((BYTE *)buf, 44);
                File.close();
            }
        }
        
        // display the export HTML now?
        if (m_ExportedHTMLOK && AskQuestion(_R(IDS_SHOW_HTML_NOW), _R(IDS_YES), _R(IDS_NO)) == 1)
        {
            // shell execute the browser
            HINSTANCE hChild = ShellExecute(HWND_DESKTOP, "open", LaunchString, NULL, NULL ,SW_SHOW);

            // If the function (ShellExecute()) fails, then an error value that is less than or equal to 32 is returned. 
            INT32 Result = (INT32)hChild;
            // problems?
            if (Result <= 32)
            {
                InformWarning(_R(IDS_NO_BROWSER));
            }
        }
    
    }
    else if (!AddedASlice) // user forgot to define any slices
    {
        if (SlicesDefinedInDrawing == 0)
            InformWarning( _R(IDS_NOSLICES) );
        else
            InformWarning( _R(IDS_NOSLICES_SELECTED) );
    }
    else // some error occured such as intersecting named slices
    {
        if (OutsideSpread)
        {
            // An invisible slice is outside the bounds of the rendered spread
            InformWarning(_R(IDS_SLICE_OUT_OF_BOUNDS));
        }
        else
        {
            // should mention that it is pTestSlice->name that is overlapping       
            String_256 temp(TEXT(""));
            temp.MakeMsg(_R(IDS_SLICES_OVERLAP), (LPCTSTR) m_ErrorStr, (LPCTSTR) strName);

            ErrorInfo Info;
            Info.ErrorMsg = 0;
            Info.Button[0] = _R(IDS_OK);
            Info.Button[1] = _R(IDS_HELP);
            Info.OK = 1;
            Info.Help = 2;
            Info.Title = _R(IDBBL_IMAGESLICE);

            BOOL Again;
            do
            {
                // Set the error message
                Error::SetError( 0, temp, 0 );

                Again = FALSE;
                switch (AskQuestion(&Info))
                {
                    case _R(IDS_HELP):
                        HelpUserTopic(_R(IDS_HELPPATH_Alert_Named_Objects_Overlap));
                        Again = TRUE;
                        break;
                }
            } while (Again);
        }
    }

    // tidey up before leaving
    TidyMosaicList(&MosaicList);

    // end a slow job
    // done through the progress class being destroyed

    //  Reset:
    BmapPrevDlg::m_bSlicingImage = FALSE;
}

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

>   INT32 OpSlice::TidyMosaicList(CList <CSlice *, CSlice *> * pMosaicList)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/8/99
    Purpose:    Deletes all the slices in the list now that we are done with them.
                So there will be no memory leeks.

********************************************************************************************/
INT32 OpSlice::TidyMosaicList(CList <CSlice *, CSlice *> * pMosaicList)
{
    // tidy the mosaic list by deleting all its entries
    INT32 Pieces = 0;
    POSITION Test = pMosaicList->GetHeadPosition();
    while (Test)
        {
            CSlice * pTestSlice = pMosaicList->GetNext(Test);
            pMosaicList->RemoveHead();
            delete pTestSlice;
            Pieces++;
        }

    return Pieces;
}

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

>   void OpSlice::UpdateSliceFileExts(CList <CSlice *, CSlice *> * pMosaicList)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/8/99
    Purpose:    Changes all non set file types to be the type the user picks from the file dlg.

********************************************************************************************/
void OpSlice::UpdateSliceFileExts(CList <CSlice *, CSlice *> * pMosaicList)
{
    POSITION Test = pMosaicList->GetHeadPosition();
    while (Test)
        {
            CSlice * pTestSlice = pMosaicList->GetNext(Test);
            if (pTestSlice->FileTypeExtStr.CompareTo("non") == 0) // using non as a standard we haven't set this yet
                pTestSlice->FileTypeExtStr = m_PathName.GetType();
        }

}

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

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

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/99
    Purpose:    This item is always available, so long as a document is visible.
                Not really sure if I even need this!!!

********************************************************************************************/
OpState OpSlice::GetState(String_256*, OpDescriptor*)
{
    OpState OpSt;

    // if we don't allow it
    OpSt.Greyed = TRUE;
    Spread* pSpread = Document::GetSelectedSpread();
    if (pSpread && !pSpread->FindActiveLayer()->IsFrame())
        OpSt.Greyed = FALSE;

    return OpSt;
}

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

>BOOL OpSlice::AddSlice (INT32 Ax, INT32 Ay, INT32 Cx, INT32 Cy, CList <CSlice *, CSlice *> * pMosaicList, String_256 SliceName)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/7/99
    Purpose:    
                 slice rect ABCD
                   A---B
                   |   |
                   D---C
                 pMosaicList should start with one entry which is the whole drawing extent
                 that is to be split up into sections.
                 The passed in slice (AC) is added to the list of pieces which is a named user
                 defined slice. Existing pieces that are occupy the same area are cut into
                 smaller parts or absorbed.

    Params:     Axy, Cxy defines the new slice
                pMosaic is this list of the slices
                SliceName is the name of the new slice

    Returns:    TRUE if it worked - FALSE if something failled

********************************************************************************************/   
BOOL OpSlice::AddSlice (INT32 Ax, INT32 Ay, INT32 Cx, INT32 Cy, CList <CSlice *, CSlice *> * pMosaicList, String_256 SliceName)
{
    // ignore empty slices as we could hardly export them
    // but since slices containing nothing could exist we should cater
    // for the possibility
    if (Ax == Cx || Ay == Cy) return TRUE;

    // if the inflate to pixel aligned rect has swapped over two named slices
    // set them to being on the same boundry
    NudgeSliceIfClose(Ax, Ay, Cx, Cy, pMosaicList);

    BOOL ok = TRUE;
    POSITION pos = pMosaicList->GetHeadPosition();

    while (pos)
    {
        POSITION thispos = pos;
        CSlice * pRect = pMosaicList->GetNext(pos);
        BOOL RemoveMe = TRUE;
        
        if (Ax == pRect->left && Cx == pRect->right && Ay == pRect->top && Cy == pRect->bottom)
        {
            // remove existing identical slices
            // keep the name if it has one and the replacement doesn't.
            if (!pRect->name.IsEmpty())
            {
                TRACE( _T("Identically named slices\n"));
                if (SliceName.IsEmpty())
                    SliceName = pRect->name;
            }
        }
        else
        if (InRect(pRect, Ax, Ay)) // A in rect
            ok = Slice (pRect, Ax, Ay, Cx, Ay, pMosaicList); // slice AB
        else
        if (InRect(pRect, Cx, Ay)) // B in rect
            ok = Slice (pRect, Ax, Ay, Cx, Ay, pMosaicList); // slice AB
        else
        if (CutsRect(pRect, Ax, Ay, Cx, Ay)) // cuts AB
            ok = Slice (pRect, Ax, Ay, Cx, Ay, pMosaicList); // slice AB
        else
        if (InRect(pRect, Cx, Cy)) // C in rect
            ok = Slice (pRect, Cx, Ay, Cx, Cy, pMosaicList); // slice BC
        else
        if (CutsRect(pRect, Cx, Ay, Cx, Cy)) // cuts BC
            ok = Slice (pRect, Cx, Ay, Cx, Cy, pMosaicList); // slice BC
        else
        if (InRect(pRect, Ax, Cy)) // D in rect
            ok = Slice (pRect, Ax, Ay, Ax, Cy, pMosaicList); // slice AD
        else
        if (CutsRect(pRect, Ax, Ay, Ax, Cy)) // cuts AD
            ok = Slice (pRect, Ax, Ay, Ax, Cy, pMosaicList); // slice AD
        else
        if (CutsRect(pRect, Ax, Cy, Cx, Cy)) // cuts DC
            ok = Slice (pRect, Ax, Cy, Cx, Cy, pMosaicList); // slice DC
        else
        if (pRect->left >= Ax && pRect->right <= Cx && pRect->top >= Ay && pRect->bottom <= Cy) // rect in ABCD
            //remove rect from list
        {
            TRACE( _T("remove sub rect\n"));
            // NB doing nothing will result in it being removed
        }
        else // this piece doesn't interact with the slice at all
            RemoveMe = FALSE; // so don't let it be taken from us

        if (!ok)
            return FALSE; // an error occurred
        
        pos = thispos;
        // reget the next item to check that we haven't extended the list
        pRect = pMosaicList->GetNext(pos);

        if (RemoveMe)
        {
            pMosaicList->RemoveAt(thispos);
            delete pRect;
        }
    }

    // add the slice passed in
    // remember to give it the users individually selected graphic type
    // which isn't yet implimented
    RemoveIlligalFileAndJavaChars(SliceName);
    pMosaicList->AddHead(new CSlice(Ax, Ay, Cx, Cy, SliceName, m_PathName.GetType(), TRUE));

    return ok;
}

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

>   BOOL OpSlice::InRect(CSlice * pRect, INT32 x, INT32 y)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/7/99
    Purpose:    Tests if the point X,Y is in the rectangle defined by the slice
    Returns:    TRUE if x,y is in the rect

********************************************************************************************/
BOOL OpSlice::InRect(CSlice * pRect, INT32 x, INT32 y)
{
    if (x > pRect->left && x < pRect->right
        && y > pRect->top && y < pRect->bottom)
        return TRUE;
        
    return FALSE;
}

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

>   BOOL OpSlice::Slice (CSlice * pRect, INT32 Ax, INT32 Ay, INT32 Bx, INT32 By, CList <CSlice *, CSlice *> * pMosaicList, POSITION pos)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/7/99
    Purpose:    Split the Slice pRect into smaller rectangles along the line AB
    Returns:    TRUE if it performed a slice
    Errors:     On overlapped named slices

********************************************************************************************/
BOOL OpSlice::Slice (CSlice * pRect, INT32 Ax, INT32 Ay, INT32 Bx, INT32 By, CList <CSlice *, CSlice *> * pMosaicList)
{
    if (!pRect->name.IsEmpty()) // Overlapping named slices
    {
        m_ErrorStr = pRect->name; // set the error string to be the name 
                                  // of the offending overlapping one
        return FALSE;
    }

    BOOL ok = FALSE;
    
    if (Ax == Bx) // Vert slice
    {
        pMosaicList->AddTail(new CSlice(pRect->left, pRect->top, Ax, pRect->bottom, "", m_PathName.GetType()));
        pMosaicList->AddTail(new CSlice(Ax, pRect->top, pRect->right, pRect->bottom, "", m_PathName.GetType()));
        ok = TRUE;
    }
    else
    if (Ay == By) // Horiz slice
    {
        pMosaicList->AddTail(new CSlice(pRect->left, pRect->top, pRect->right, Ay, "", m_PathName.GetType()));
        pMosaicList->AddTail(new CSlice(pRect->left, Ay, pRect->right, pRect->bottom, "", m_PathName.GetType()));
        ok = TRUE;
    }
    
    return ok;
}

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

>   BOOL OpSlice::CutsRect(CSlice * pRect, INT32 Ax, INT32 Ay, INT32 Bx, INT32 By)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    23/7/99
    Purpose:    Tests to see if the line AB cuts the rectangle pRect
    Returns:    TRUE if it does cut

********************************************************************************************/
BOOL OpSlice::CutsRect(CSlice * pRect, INT32 Ax, INT32 Ay, INT32 Bx, INT32 By)
{
    if (Ax == Bx) // Vert cut
    {
        // top & bottom outside rect
        // while the vertical line cuts through the rect
        if (Ay <= pRect->top && By >= pRect->bottom
            && Ax < pRect->right && Ax > pRect->left)
            return TRUE;
    }
    else
    if (Ay == By) // Horiz cut
    {
        // left & right outside rect
        // while the horizontal line cuts through the rect
        if (Ax <= pRect->left && Bx >= pRect->right
            && Ay < pRect->bottom && Ay > pRect->top)
            return TRUE;
    }
    
    return FALSE;
}

// moves all edges slightly from one location to another keeping them all in line
void ReAlignEdge ( INT32 OldEdge, INT32 NewEdge, BOOL Horiz, CList <CSlice *, CSlice *> * pMosaicList)
{
    POSITION pos = pMosaicList->GetHeadPosition();

    while (pos)
    {
        CSlice * pRect = pMosaicList->GetNext(pos);

        if (Horiz)
        {
            if (pRect->left == OldEdge)
                pRect->left = NewEdge;
            else
            if (pRect->right == OldEdge)
                pRect->right = NewEdge;
        }
        else
        {
            if (pRect->bottom == OldEdge)
                pRect->bottom = NewEdge;
            else
            if (pRect->top == OldEdge)
                pRect->top = NewEdge;
        }
    }
}

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

>   void OpSlice::NudgeSliceIfClose(INT32 &Ax, INT32 &Ay, INT32 &Cx, INT32 &Cy, CList <CSlice *, CSlice *> * pMosaicList)

    Author:     Simon_Knight (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/8/99
    Purpose:    Moves the new slice over a bit if it just overlaps with an
                existing slice due to the pixel infation.
                It does this by adjusting the AC rectangle passed in
    Returns:    nothing

********************************************************************************************/
void OpSlice::NudgeSliceIfClose(INT32 &Ax, INT32 &Ay, INT32 &Cx, INT32 &Cy, CList <CSlice *, CSlice *> * pMosaicList)
{
    INT32 OldAx = Ax;
    INT32 OldAy = Ay;
    INT32 OldCx = Cx;
    INT32 OldCy = Cy;

    BOOL done = FALSE;

    // allow how many pixels to be fudged?
    for (INT32 size = 750 ; size <= 1500 && !done ; size += 750)
    {
        POSITION pos = pMosaicList->GetHeadPosition();

        whil