prpsgds.cpp

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// $Id: prpsgds.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
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

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with Xara LX (see the file GPL in the root directory of the
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Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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

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"
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----------------

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-----

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

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

// Implementation of the Guides properties tab of the layer properties dialog box

/*

*/

#include "camtypes.h"

// WEBSTER - markn 15/1/97
// Don't need this tab in Webster
#ifndef WEBSTER

#include "layer.h"
#include "layerprp.h"
//#include "lyrprop.h"  // dialog/gadget ids
//#include "nev.h"      // error messages
#include "prpsgds.h"
#include "guides.h"
#include "coldrop.h"
//#include "fixmem.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "document.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "markn.h"
#include "sglayer.h"
#include "colourix.h"
//#include "jason.h"
#include "layermsg.h"

CC_IMPLEMENT_DYNAMIC(GuidesPropertiesTab,       LayerPropertyTabs)   
CC_IMPLEMENT_DYNCREATE(LayerColourAction,       Action)
CC_IMPLEMENT_MEMDUMP(OpChangeLayerColourParam,  OpParam)
CC_IMPLEMENT_DYNCREATE(OpChangeLayerColour,     UndoableOperation)

// 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 $");

#define new CAM_DEBUG_NEW

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

>   GuidesPropertiesTab::GuidesPropertiesTab() 


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -   
    Outputs:    -
    Returns:    -
    Purpose:    GuidesPropertiesTab constructor. Creates a non-undoable operation
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

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

GuidesPropertiesTab::GuidesPropertiesTab()
{   
    GuideType       = GUIDELINE_HORZ;
    pColourDropDown = NULL;
}            

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

>   GuidesPropertiesTab::~GuidesPropertiesTab()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    GuidesPropertiesTab destructor
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

********************************************************************************************/
                                                                                
GuidesPropertiesTab::~GuidesPropertiesTab()
{
    if (pColourDropDown != NULL)
        delete pColourDropDown;

    GuidelineList.DeleteAll();
}        

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

>   BOOL GuidesPropertiesTab::Init()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    True if initialised ok, False if failed.
    Purpose:    GuidesPropertiesTab initialisation routine
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg::Init; LayerPropertyTabs::Init;

********************************************************************************************/
                                                                                
BOOL GuidesPropertiesTab::Init()
{   
    return TRUE;
}        

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

>   CDlgResID GuidesPropertiesTab::GetPageID()()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    The dialog ID of this tab section.    
    Purpose:    Allows the options dialog code to determine the dialog ID of this section.
    Errors:     -
    SeeAlso:    -

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

CDlgResID GuidesPropertiesTab::GetPageID()
{
    return _R(IDD_TAB_GUIDELINE_PROPERTIES);
}

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

>   BOOL GuidesPropertiesTab::IsPropertyRequired()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Returns:    Returns True if this tab is a program option.     
    Purpose:    Allows the layer propertiesto determine if this tab is required.

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

BOOL GuidesPropertiesTab::IsPropertyRequired()
{
    return TRUE;
}


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

>   BOOL GuidesPropertiesTab::CommitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    True if values in dialog box ok, False otherwise.     
    Purpose:    Takes the values in this tab of the layer properties dialog box.
                Called when ok or apply now is pressed on the main dialog box.
    Errors:     -
    SeeAlso:    GuidesPropertiesTab::InitSection()

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

BOOL GuidesPropertiesTab::CommitSection()
{
TRACEUSER( "Neville", _T("GuidesPropertiesTab::CommitSection\n"));
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::CommitSection called with no dialog pointer");

    BOOL ok = pPropertiesDlg->TalkToPage(GetPageID());
    if (!ok)
        return TRUE;            // Talk to page failed to return now


    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::GreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has closed all documents 
    Errors:     -
    SeeAlso:    GuidesPropertiesTab::UngreySection;

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

BOOL GuidesPropertiesTab::GreySection()
{
TRACEUSER( "Neville", _T("GreySection in GuidesPropertiesTab section\n"));
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::GreySection called with no dialog pointer");

    BOOL ok = pPropertiesDlg->TalkToPage(GetPageID());
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Only update if we are not already grey 
    if (GreyStatus == TRUE)
        return TRUE;

    // Call our central greying/ungreying function
    ok = ChangeControlStatus(FALSE);
    
    GreyStatus = TRUE;

    return ok;
} 

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

>   BOOL GuidesPropertiesTab::UngreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has selected a new document 
    Errors:     -
    SeeAlso:    GuidesPropertiesTab::UngreySection;

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

BOOL GuidesPropertiesTab::UngreySection()
{
TRACEUSER( "Neville", _T("UngreySection in GuidesPropertiesTab section\n"));
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::UngreySection called with no dialog pointer");

    BOOL ok = pPropertiesDlg->TalkToPage(GetPageID());  // The GuidesPropertiesTab identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Only update if we are not already ungrey 
    if (GreyStatus == FALSE)
        return TRUE;

    // Call our central greying/ungreying function
    ok = ChangeControlStatus(TRUE);
    
    GreyStatus = FALSE;

    return ok;
}

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

>   BOOL GuidesPropertiesTab::ChangeControlStatus(const BOOL Status)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called to grey/ungrey all controls on this tab. 
    Errors:     -
    SeeAlso:    GuidesPropertiesTab::GreySection;   GuidesPropertiesTab::UngreySection;

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

BOOL GuidesPropertiesTab::ChangeControlStatus(const BOOL Status)
{
    BOOL Enable;

    Layer* pLayer = GetGuideLayer();
    Enable = (pLayer != NULL) && Status;

    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_GUIDELINELIST),Enable);
    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_HORZ),         Enable);
    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_VERT),         Enable);
    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_COLOURLIST),   Enable);
    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_COLOURTEXT),   Enable);

    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_NEW),          Status);    // Always available

    INT32 SelCount = pPropertiesDlg->GetSelectedCount(_R(IDC_GUIDETAB_GUIDELINELIST));

    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_DELETE),       Enable && (SelCount >= 1));
    pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_PROPERTIES),   Enable && (SelCount == 1));

    if (!Enable)
        pPropertiesDlg->DeleteAllValues(_R(IDC_GUIDETAB_GUIDELINELIST));

    return TRUE;
}           

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

>   BOOL GuidesPropertiesTab::UpdateSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Returns:    -
    Purpose:    Called when we have switched to a new document and need to update all the 
                controls on this tab. Should only init the tab if the page is present.  
                The document name allows the info field on the tab to be filled in correctly.
    Errors:     -
    SeeAlso:    GuidesPropertiesTab::GreySection; GuidesPropertiesTab::UngreySection; GuidesPropertiesTab::InitSection;

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

BOOL GuidesPropertiesTab::UpdateSection()
{
TRACEUSER( "Neville", _T("GuidesPropertiesTab::UpdateSection\n"));
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::UpdateSection called with no dialog pointer");

    BOOL ok = pPropertiesDlg->TalkToPage(GetPageID());
    if (!ok)
        return TRUE;        // page not present


    // Update our controls here

    // We are happy with what happened
    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::BuildGuidelineList(Layer* pLayer)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    5/10/95
    Inputs:     pLayer = ptr layer that contains guidelines
    Outputs:    -
    Returns:    -
    Purpose:    Builds a list of the guidelines in the given layer
                Uses member var GuidelineList
    Errors:     -
    SeeAlso:    

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

BOOL GuidesPropertiesTab::BuildGuidelineList(Layer* pLayer)
{
    GuidelineList.DeleteAll();
    pPropertiesDlg->DeleteAllValues(_R(IDC_GUIDETAB_GUIDELINELIST));

    ERROR2IF(pLayer == NULL, FALSE,"pLayer is NULL");

    Node* pNode = pLayer->FindFirstChild(CC_RUNTIME_CLASS(NodeGuideline));
    while (pNode != NULL)
    {
        NodeGuideline* pGuideline = (NodeGuideline*) pNode;
        if (pGuideline->GetType() == GuideType)
        {
            GuidelineListItem* pItem = (GuidelineListItem*)GuidelineList.GetHead();
            while (pItem != NULL && (pItem->pGuideline->GetOrdinate() < pGuideline->GetOrdinate()))
                pItem = (GuidelineListItem*)GuidelineList.GetNext(pItem);

            GuidelineListItem* pNewItem = new GuidelineListItem(pGuideline);

            if (pNewItem != NULL)
            {
                if (pItem == NULL)
                    GuidelineList.AddTail(pNewItem);
                else
                    GuidelineList.InsertBefore(pItem,pNewItem);
            }
        }

        pNode = pNode->FindNext(CC_RUNTIME_CLASS(NodeGuideline));
    }

    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::ShowGuidelines(Layer* pLayer)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/10/95
    Inputs:     pLayer = ptr layer that contains guidelines
    Outputs:    -
    Returns:    -
    Purpose:    Shows the guidelines in the guideline list
    Errors:     -
    SeeAlso:    

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

BOOL GuidesPropertiesTab::ShowGuidelines(Layer* pLayer)
{
    ERROR2IF(pLayer == NULL, FALSE,"pLayer is NULL");

    BuildGuidelineList(pLayer);

    GuidelineListItem* pItem = (GuidelineListItem*)GuidelineList.GetHead();
    while (pItem != NULL)
    {   
        NodeGuideline* pGuideline = pItem->pGuideline;

        MILLIPOINT Ordinate = NodeGuideline::ToUserOrdinate(pGuideline->FindParentSpread(),pGuideline->GetOrdinate(),GuideType);
        pPropertiesDlg->SetDimensionGadgetValue(_R(IDC_GUIDETAB_GUIDELINELIST),Ordinate,pGuideline);

        pItem = (GuidelineListItem*)GuidelineList.GetNext(pItem);
    }

    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::ShowColours()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/10/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Shows the colours of the doc in the colour list
    Errors:     -
    SeeAlso:    GuidesPropertiesTab

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

BOOL GuidesPropertiesTab::ShowColours()
{
    if (pColourDropDown != NULL)
    {
        IndexedColour* pIndexedColour = NULL;
        Layer* pLayer = GetGuideLayer();
        if (pLayer != NULL)
        {
            DocColour* pDocColour = pLayer->GetGuideColour();
            if (pDocColour != NULL)
            {
                pIndexedColour = pDocColour->FindParentIndexedColour();
                if (pIndexedColour->IsDeleted())
                {
                    pLayer->SetGuideColour(NULL);
                    pIndexedColour = NULL;
                }
            }
        }

        pColourDropDown->ClearAllSpecialEntries();

        if (pIndexedColour != NULL)
        {
            if (!pIndexedColour->IsNamed())
            {
                String_256 LocalColourText(_R(IDS_LOCALCOLOUR));
                DocColour LocalColour;
                LocalColour.MakeRefToIndexedColour(pIndexedColour);

                pColourDropDown->AddSpecialEntry(&LocalColourText,&LocalColour);
            }

            pColourDropDown->FillInColourList(pIndexedColour);
        }
        else
            pColourDropDown->FillInColourList(NULL,0);
    }
    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::ShowDetails()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/10/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Shows the details of the associated layer in this tab
    Errors:     -
    SeeAlso:    GuidesPropertiesTab

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

BOOL GuidesPropertiesTab::ShowDetails()
{
    Layer* pLayer = GetGuideLayer();
    if (pLayer != NULL)
    {
        ShowGuidelines(pLayer);
        ShowColours();

        pPropertiesDlg->SetBoolGadgetSelected(_R(IDC_GUIDETAB_HORZ),GuideType == GUIDELINE_HORZ);
        pPropertiesDlg->SetBoolGadgetSelected(_R(IDC_GUIDETAB_VERT),GuideType == GUIDELINE_VERT);
    }

    ChangeControlStatus(!GreyStatus);

    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::UpdateLayerSection()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/10/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if ok, FALSE otherwise
    Purpose:    Called when the layer-related section of the tab should be updated.
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

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

BOOL GuidesPropertiesTab::UpdateLayerSection()
{
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::UpdateLayerSection() called with no dialog pointer");
    return (pPropertiesDlg->TalkToPage(GetPageID()) && ShowDetails());
}

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

>   BOOL GuidesPropertiesTab::UpdateGuidelineSection()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/10/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if ok, FALSE otherwise
    Purpose:    Called when the guideline-related section of the tab should be updated.
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

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

BOOL GuidesPropertiesTab::UpdateGuidelineSection()
{
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::UpdateGuidelineSection() called with no dialog pointer");
    return (pPropertiesDlg->TalkToPage(GetPageID()) && ShowDetails());
}

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

>   virtual BOOL GuidesPropertiesTab::ColourListChanged(Document* pDoc)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    9/10/95
    inputs:     pDoc = ptr to document that contains the changed list, or NULL if there's no longer a list
    Returns:    TRUE if successful, else FALSE
    Purpose:    Called when the colour list changes in some way.
                pDoc points to the doc that contains the list that's changed.
                If pDoc is NULL, then there is no longer a colour list (e.g. all docs closed)
    Errors:     -
    SeeAlso:    -

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

BOOL GuidesPropertiesTab::ColourListChanged(Document* pDoc)
{
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::UpdateGuidelineSection() called with no dialog pointer");
    ERROR2IF(pColourDropDown == NULL,FALSE,"ptr to 'colour drop down' is NULL");

    if (pPropertiesDlg->TalkToPage(GetPageID()))
    {
        BOOL Enable = (pDoc != NULL);

        pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_COLOURLIST),Enable);
        pPropertiesDlg->EnableGadget(_R(IDC_GUIDETAB_COLOURTEXT),Enable);

        if (Enable)
            ShowColours();
        else
            pColourDropDown->ClearList();           
    }
    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::HandleMsg(DialogMsg* Msg)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Handles all the messages for this layer property tab
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

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

BOOL GuidesPropertiesTab::HandleMsg(DialogMsg* Msg)
{
TRACEUSER( "Neville", _T("GuidesPropertiesTab::HandleMsg\n"));
    ERROR2IF(Msg == NULL,FALSE,"GuidesPropertiesTab::Message null message received");
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::HandleMsg called with no dialog pointer");

    BOOL ok = pPropertiesDlg->TalkToPage(GetPageID());
    if (!ok)
        return TRUE;        // no page present = handled message
    
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:    // Initialise controls
            GreyStatus = FALSE; // we are ungreyed by default
            ok = InitSection();
            if (!ok)
                InformError();
            break;
        case DIM_LFT_BN_CLICKED:
            //LayerPropertyTabs::SetApplyNowState(TRUE);
            if (FALSE) {}
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_HORZ))
            {
                if (GuideType != GUIDELINE_HORZ)
                {
                    GuideType = GUIDELINE_HORZ;
                    ShowDetails();
                }
            }
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_VERT))
            {
                if (GuideType != GUIDELINE_VERT)
                {
                    GuideType = GUIDELINE_VERT;
                    ShowDetails();
                }
            }
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_PROPERTIES))
            {
                PropertiesClicked();
                ShowDetails();
            }
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_NEW))
            {
                NewClicked();
                ShowDetails();
            }
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_DELETE))
            {   
                DeleteClicked();
                ShowDetails();
            }
            break;

        case DIM_SELECTION_CHANGED:
        case DIM_TEXT_CHANGED:
            //LayerPropertyTabs::SetApplyNowState(TRUE);
            if (FALSE) {}
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_GUIDELINELIST))
            {
                ChangeControlStatus(!GreyStatus);
            }
            else if (Msg->GadgetID == _R(IDC_GUIDETAB_COLOURLIST))
            {
                ColourChanged(pPropertiesDlg->GetSelectedValueIndex(Msg->GadgetID));
                ShowDetails();
            }
            break;
        default:
            break;
    }
    return TRUE;
}  

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

>   BOOL GuidesPropertiesTab::ColourChanged(INT32 Index)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/10/95
    Inputs:     Index = index of selected item (Values < 0 will return FALSE);
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Handles a change in the colour list selection
    Errors:     -
    SeeAlso:    -

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

BOOL GuidesPropertiesTab::ColourChanged(INT32 Index)
{
    if (pColourDropDown == NULL || Index < 0)
        return FALSE;
 
    IndexedColour* pNewColour = pColourDropDown->DecodeSelection(Index);

    Layer* pLayer = GetGuideLayer();
    if (pLayer != NULL)
    {
        OpDescriptor* pOpDesc = OpDescriptor::FindOpDescriptor(OPTOKEN_CHANGELAYERCOLOUR);
        ERROR3IF(pOpDesc == NULL,"FindOpDescriptor(OPTOKEN_CHANGELAYERCOLOUR) failed");

        if (pOpDesc != NULL)
        {
            OpChangeLayerColourParam ChangeColourParam(pDocument,pLayer,pNewColour);
            pOpDesc->Invoke(&ChangeColourParam);
        }
//      pLayer->SetGuideColour(pNewColour);
//      LayerSGallery::ForceRedrawLayer(pDocument,pLayer);
    }
    return TRUE;
}

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

>   BOOL GuidesPropertiesTab::DeleteClicked()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/10/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Allows you to delete the selected Guidelines
    Errors:     -
    SeeAlso:    -

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

BOOL GuidesPropertiesTab::DeleteClicked()
{
    INT32* pIndexList = pPropertiesDlg->GetSelectedItems(_R(IDC_GUIDETAB_GUIDELINELIST));
    INT32 Count = GuidelineList.GetCount();

    INT32 i;

    BOOL ok = (pIndexList != NULL && Count > 0);
    NodeGuideline** pGuidelineList = NULL;

    if (ok)
    {
        pGuidelineList = (NodeGuideline**)CCMalloc(sizeof(NodeGuideline*)*(Count+1));

        ok = (pGuidelineList != NULL);

        if (ok)
        {
            for (i=0; (pIndexList[i] >= 0) && (i < Count);i++)
            {
                GuidelineListItem* pItem = (GuidelineListItem*)GuidelineList.FindItem(pIndexList[i]);
                if (pItem != NULL)
                    pGuidelineList[i] = pItem->pGuideline;
                else
                {
                    pGuidelineList[i] = NULL;
                    ERROR3_PF(("List item at index [%d] is NULL",i));
                }
            }

            pGuidelineList[i] = NULL;
        }
    }
    else
        ok = FALSE;

    if (ok)
    {
        OpDescriptor* pOpDesc = OpDescriptor::FindOpDescriptor(OPTOKEN_GUIDELINE);
        ERROR3IF(pOpDesc == NULL,"FindOpDescriptor(OPTOKEN_GUIDELINE) failed");

        if (pOpDesc != NULL)
        {
            OpGuidelineParam GuidelineParam;

            GuidelineParam.Method           = GUIDELINEOPMETHOD_DELETE;
            GuidelineParam.pGuidelineList   = pGuidelineList;

            pOpDesc->Invoke(&GuidelineParam);
        }
    }

    if (pGuidelineList != NULL)
        CCFree(pGuidelineList);

    if (pIndexList != NULL)
        delete [] pIndexList;

    return ok;
}

/******************************************************************************************
>   BOOL GuidesPropertiesTab::NewClicked()

    Author:     Ed_Cornes (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/10/95
    Returns:    FALSE if fails
    Purpose:    Allows you to create a new Guideline
******************************************************************************************/

BOOL GuidesPropertiesTab::NewClicked()
{
    // set guideline to be at user ordinate 0
    Spread*    pSpread  = Document::GetSelectedSpread();
    MILLIPOINT Ordinate = NodeGuideline::ToSpreadOrdinate(pSpread,0,GuideType);
    GuidelinePropDlg::SetNewGuidelineParams(GuideType,Ordinate);

    OpDescriptor* pOpDesc = OpDescriptor::FindOpDescriptor(OPTOKEN_NEWGUIDELINEPROPDLG);
    if (pOpDesc!=NULL)
        pOpDesc->Invoke();
    else
        ERROR3("GuidesPropertiesTab::NewClicked() - OpDescriptor::FindOpDescriptor(OPTOKEN_NEWGUIDELINEPROPDLG) - failed");

    return TRUE;
}

/******************************************************************************************
>   BOOL GuidesPropertiesTab::PropertiesClicked()

    Author:     Ed_Cornes (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/10/95
    Returns:    FALSE if fails
    Purpose:    Opens up the guideline properties dlg for the first selected item in the guideline list box
******************************************************************************************/

BOOL GuidesPropertiesTab::PropertiesClicked()
{
    INT32 Index = pPropertiesDlg->GetFirstSelectedItem(_R(IDC_GUIDETAB_GUIDELINELIST));
    Layer* pLayer = GetGuideLayer();
    if (Index < 0 || pLayer == NULL) return FALSE;

    BOOL Valid;
    /*MILLIPOINT Ordinate =*/ pPropertiesDlg->GetDimensionGadgetValue(_R(IDC_GUIDETAB_GUIDELINELIST),pLayer,&Valid,Index);

    if (Valid)
    {
        GuidelineListItem* pItem = (GuidelineListItem*)GuidelineList.FindItem(Index);
        if (pItem!=NULL && pItem->pGuideline!=NULL)
        {
            GuidelinePropDlg::SetEditGuidelineParams(pItem->pGuideline);
            OpDescriptor* pOpDesc = OpDescriptor::FindOpDescriptor(OPTOKEN_EDITGUIDELINEPROPDLG);
            if (pOpDesc != NULL)
                pOpDesc->Invoke();
            else
                ERROR3("GuidesPropertiesTab::PropertiesClicked() - OpDescriptor::FindOpDescriptor(OPTOKEN_EDITGUIDELINEPROPDLG) failed");
        }
        else
            ERROR3_PF(("Unable to find guideline item at index (%d)",Index));
    }

    return TRUE;    
}


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

>   NodeGuideline* GuidesPropertiesTab::FindClosestGuideline(MILLIPOINT UserOrdinate)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/10/95
    Inputs:     UserOrdinate = Ordinate of guideline in UserCoord space
    Outputs:    -
    Returns:    Ptr to nearest guideline to the given ordinate, or NULL if not found
    Purpose:    This hunts the current layer for guidelines of type GuideType, and returns the nearest
                one to the given ordinate of that type
    Errors:     -
    SeeAlso:    -

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

/*
NodeGuideline* GuidesPropertiesTab::FindClosestGuideline(MILLIPOINT UserOrdinate)
{
    NodeGuideline* pNearestGuideline = NULL;
    MILLIPOINT SmallestDelta;

    Layer* pLayer = GetGuideLayer();
    if (pLayer != NULL)
    {
        Node* pNode = pLayer->FindFirstChild(CC_RUNTIME_CLASS(NodeGuideline));
        while (pNode != NULL)
        {
            NodeGuideline* pGuideline = (NodeGuideline*)pNode;

            if (pGuideline->GetType() == GuideType)
            {
                MILLIPOINT Ordinate = NodeGuideline::ToSpreadOrdinate(pGuideline->FindParentSpread(),UserOrdinate,GuideType);
                MILLIPOINT Delta = abs(pGuideline->GetOrdinate() - Ordinate);

                if ((pNearestGuideline == NULL) || (Delta < SmallestDelta))
                {
                    pNearestGuideline = pGuideline;
                    SmallestDelta = Delta;
                }                   
            }

            pNode = pNode->FindNext(CC_RUNTIME_CLASS(NodeGuideline));
        }
    }

    return pNearestGuideline;
}
*/

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

>   BOOL GuidesPropertiesTab::InitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Sets initial values for this tab on the layer properties dialog box.
    Errors:     -
    SeeAlso:    LayerPropertyTabsDlg; LayerPropertyTabs;

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

BOOL GuidesPropertiesTab::InitSection()
{
TRACEUSER( "Neville", _T("GuidesPropertiesTab::InitSection\n"));
    ERROR2IF(pPropertiesDlg == NULL,FALSE,"GuidesPropertiesTab::InitSection called with no dialog pointer");

    pColourDropDown = new ColourDropDown;
    if (pColourDropDown != NULL)
        pColourDropDown->Init(pPropertiesDlg->GetReadWriteWindowID(),_R(IDC_GUIDETAB_COLOURLIST));

    ShowDetails();

    return TRUE;
}


//--------------------------------------------------------
//--------------------------------------------------------

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

>   LayerColourAction::LayerColourAction()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Constructor for the action
    Errors:     -
    SeeAlso:    -

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

LayerColourAction::LayerColourAction()
{
}


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

>   ActionCode LayerColourAction::Init(UndoableOperation* pOp,
                                        ActionList* pActionList,
                                        OpChangeLayerColourParam EntryParam)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     pOp         = ptr to the operation to which this action belongs
                pActionList = ptr to action list to which this action should be added
                Param       = Contains all the info needed to change the layer's colour
    Outputs:    -
    Returns:    ActionCode, one of AC_OK, AC_NO_RECORD or AC_FAIL
    Purpose:    The action that does the layer colour change biz
    Errors:     -
    SeeAlso:    Action::Init()

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



ActionCode LayerColourAction::Init( UndoableOperation* pOp,
                                    ActionList* pActionList,
                                    OpChangeLayerColourParam EntryParam)
{
    UINT32 ActSize = sizeof(LayerColourAction);

    LayerColourAction* pNewAction;
    ActionCode Ac = Action::Init(pOp,pActionList,ActSize,CC_RUNTIME_CLASS(LayerColourAction),(Action**)&pNewAction);

    if (Ac != AC_FAIL && pNewAction != NULL)
    {
        OpChangeLayerColourParam& Param = ((LayerColourAction*)pNewAction)->Param;

        Document* pDoc   = EntryParam.pDoc;
        Layer*    pLayer = EntryParam.pLayer;

        Param.pDoc   = pDoc;
        Param.pLayer = pLayer;

        if (pDoc != NULL && pLayer != NULL)
        {
            DocColour* pDocColour = pLayer->GetGuideColour();
            Param.pColour = pDocColour->FindParentIndexedColour();

            pLayer->SetGuideColour(EntryParam.pColour);
            LayerSGallery::ForceRedrawLayer(pDoc,pLayer);
            BROADCAST_TO_ALL(LayerMsg(pLayer,LayerMsg::GUIDELINES_CHANGED));
        }

        ERROR3IF(pDoc == NULL,  "pDoc is NULL");            
        ERROR3IF(pLayer == NULL,"pLayer is NULL");          
    }

    return Ac;
}

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

>   ActionCode LayerColourAction::Execute();

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     -
    Outputs:    -
    Returns:    ActionCode, one of AC_OK, AC_NO_RECORD or AC_FAIL
    Purpose:    Executes the action.  
                Puts the action's layer's visible state to the opposite setting.
    Errors:     -
    SeeAlso:    Action::Init()

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

ActionCode LayerColourAction::Execute()
{
    ActionCode Ac = AC_FAIL;

    if (pOperation->IS_KIND_OF(UndoableOperation))
    {
        Ac = LayerColourAction::Init((UndoableOperation*)pOperation,pOppositeActLst,Param);

    }
    else
    {
        ERROR3("LayerColourAction::Execute() called with op that's not an undoable op");
    }

    return Ac;
}

LayerColourAction::~LayerColourAction()
{
}

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------


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

>   OpChangeLayerColour::OpChangeLayerColour()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Purpose:    Default constructor

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

OpChangeLayerColour::OpChangeLayerColour()
{
    UndoIDS = _R(IDS_OPCHANGEGUIDELAYERCOLOUR);
}

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

>   OpChangeLayerColour::~OpChangeLayerColour()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Purpose:    Default destructor

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

OpChangeLayerColour::~OpChangeLayerColour()
{
}

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

>   void OpChangeLayerColour::DoWithParam(OpDescriptor* pOpDesc,OpParam* pOpParam)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     pOpDesc  = ptr to op descriptor
                pOpParam = ptr to the params (should be a OpChangeLayerColourParam)
    Outputs:    -
    Return:     -
    Purpose:    Does the changing of the layer's colour
                pOpParam should point to a OpChangeLayerColourParam

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

void OpChangeLayerColour::DoWithParam(OpDescriptor* pOpDesc,OpParam* pOpParam)
{
    OpChangeLayerColourParam* pParam = (OpChangeLayerColourParam*)pOpParam;

    ActionCode Ac = LayerColourAction::Init(this,&UndoActions,*pParam);

    if (Ac == AC_FAIL)
        FailAndExecute();

    End();
}

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

>   static BOOL OpChangeLayerColour::Init()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     -
    Outputs:    -
    Return:     TRUE if initialised properly, FALSE otherwise
    Purpose:    Initialises the operation by registering an op descriptor for it

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

BOOL OpChangeLayerColour::Init()
{
    return (RegisterOpDescriptor(
                                0, 
                                0,
                                CC_RUNTIME_CLASS(OpChangeLayerColour), 
                                OPTOKEN_CHANGELAYERCOLOUR,
                                OpChangeLayerColour::GetState,
                                0,  /* help ID */
                                0,  /* bubble ID */
                                0   /* bitmap ID */
                                )
            );

}

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

>   static OpState OpChangeLayerColour::GetState(String_256* Description, OpDescriptor*)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     Description = place to put reason why you are greyed out
    Outputs:    -
    Return:     The state of this op
    Purpose:    Func for finding out whether this op is useable or not

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

OpState OpChangeLayerColour::GetState(String_256* Description, OpDescriptor*)
{
    OpState State;
    return State;
}

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

>   void OpChangeLayerColour::GetOpName(String_256* OpName)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/95
    Inputs:     OpName = place to put name of op in
    Outputs:    -
    Return:     -
    Purpose:    Gets the name of the op for the undo/redo menu item

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

void OpChangeLayerColour::GetOpName(String_256* OpName)
{
    *OpName = String_256(UndoIDS);
}

#endif // WEBSTER

---