optsscal.cpp

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// $Id: optsscal.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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-----------------

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=================================XARAHEADEREND============================
 */
//
// Implementation of the Scale/Dimension tab of the options dialog box

/*

*/

#include "camtypes.h"
//WEBSTER-ranbirr-13/11/96
#ifndef WEBSTER
#include "appprefs.h"
//#include "prefsdlg.h" // dialog/gadget ids
//#include "optsres.h"  // error strings
#include "optsscal.h"
#include "optsmsgs.h"
//#include "app.h"      // Camelot object
//#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "spread.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "nev.h"
//#include "document.h" // document object - in camtypes.h [AUTOMATICALLY REMOVED]

CC_IMPLEMENT_DYNAMIC(ScaleTab, OptionsTabs)   
              
// 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 $");

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

>   ScaleTab::ScaleTab() 


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    ScaleTab constructor. Creates a non-Scaleable operation
    Errors:     -
    SeeAlso:    -

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

ScaleTab::ScaleTab()
{   
    pDimScale = NULL;
}        

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

>   ScaleTab::~ScaleTab()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    ScaleTab destructor
    Errors:     -
    SeeAlso:    -

********************************************************************************************/
                                                                                
ScaleTab::~ScaleTab()
{   
}        

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

>   BOOL ScaleTab::Init()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    True if initialised ok, False if failed.
    Purpose:    ScaleTab initialisation routine
    Errors:     -
    SeeAlso:    -

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


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

>   CDlgResID ScaleTab::GetPageID()()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    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 ScaleTab::GetPageID()
{
    return _R(IDD_OPTSTAB_SCALE);
}

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

>   BOOL ScaleTab::IsDocumentOption()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    Returns True if this tab is a document option.    
    Purpose:    Allows the document options dialog code to determine if this tab belongs
                to the group of document options.
    Errors:     -
    SeeAlso:    IsProgramOption();

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

BOOL ScaleTab::IsDocumentOption()
{
    return TRUE;    // This tab is not a document option 
}

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

>   BOOL ScaleTab::IsProgramOption()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    Returns True if this tab is a program option.     
    Purpose:    Allows the program options dialog code to determine if this tab belongs
                to the group of program options.
    Errors:     -
    SeeAlso:    IsProgramOption();

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

BOOL ScaleTab::IsProgramOption()
{
    return TRUE;    // This tab is a program option 
}


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

>   BOOL ScaleTab::CommitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    True if values in dialog box ok, False otherwise.     
    Purpose:    Takes the values in the Scale section tab of the options dialog box and
                sets the associated preference values accordingly
                Called when ok is pressed on the dialog box.
    Errors:     -
    SeeAlso:    -

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

BOOL ScaleTab::CommitSection()
{
TRACEUSER( "Neville", _T("commit Scale section\n"));
    ERROR3IF(pPrefsDlg == NULL, "ScaleTab::CommitSection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_SCALE)); // The Scale tab identifier
    if (!ok)
        return TRUE;    // Talk to View failed to return now

    // Ok has been pressed so take the values from this section of the dialog box
    // Takes the values in the dialog and sets the DimScale object accordingly.
    BOOL Valid=TRUE;        // Flag for validity of value
//  BOOL State=FALSE;       // Flag for state of button/switch
    BOOL SetOk=TRUE;        // Preference value set ok

    // Section = Scale settings

    // Now check that we have the selected view still, just in case it has switched
    // without us being told about it or even we have no current document/view.
    // This may be a valid state now, so do not complain about it. 
    DocView* pCurrentView = DocView::GetSelected();
    if (pCurrentView != NULL)
    {
        // Only if there is a current view do we read the values.
        String_256 DrawingStr;
        String_256 RealStr;
        //TCHAR* pDrawingStr = DrawingStr;
        //TCHAR* pRealStr = RealStr;
        BOOL Active;

        // Get the values from the dialog box
        Active      = pPrefsDlg->GetLongGadgetValue(_R(IDC_OPTS_USESCALEFACTOR),0,1,0, &Valid);
        DrawingStr  = pPrefsDlg->GetStringGadgetValue(_R(IDC_OPTS_DRAWINGSCALE), &Valid);
        RealStr     = pPrefsDlg->GetStringGadgetValue(_R(IDC_OPTS_REALSCALE), &Valid);

        Spread* pSpread = pCurrentView->GetFirstSelectedSpread();
        // If no selected spread then use the visible spread
        if (pSpread == NULL)
            pSpread = pCurrentView->GetVisibleSpread();

        // Only do the chnage if we have a valid spread pointer and we have changed something.
        if ( (pSpread != NULL) &&
             (
                (OldActiveState != Active) ||
                (OldDrawingStr != DrawingStr) ||
                (OldRealStr != RealStr)
             )
           )
        {
            pDimScale = pSpread->GetPtrDimScale();
            if (pDimScale != NULL)
            {
                // Only if active is set do we need to try and set new strings
                // and hence a new drawing scale
                if (Active)
                {
                    // Dim Scales can only be 32 characters long
                    String_32 DrawingStr32 = _T("");
                    String_32 RealStr32 = _T("");
                    // Check if read in strings are longer than this
                    if (DrawingStr.Length() > DrawingStr32.MaxLength())
                    {
                        InformError(_R(IDE_OPTS_INVALIDDRAWSCALE));
                        return FALSE;
                    }
                    if (RealStr.Length() > RealStr32.MaxLength())
                    {
                        InformError(_R(IDE_OPTS_INVALIDREALSCALE));
                        return FALSE;
                    }

                    RealStr32 = RealStr;
                    DrawingStr32 = DrawingStr;

                    // Try and set these strings as new drawing and real scales strings
                    SetOk = pDimScale->SetDrawingScaleStr(DrawingStr32);
                    if (!SetOk)
                    {
                        InformError(_R(IDE_OPTS_INVALIDDRAWSCALE));
                        return FALSE;
                    }

                    SetOk = SetOk && pDimScale->SetRealScaleStr(RealStr32);
                    if (!SetOk)
                    {
                        InformError(_R(IDE_OPTS_INVALIDREALSCALE));
                        return FALSE;
                    }
                
                    // Now try to convert these into a new scaling factor
                    if (SetOk)
                        SetOk = SetOk && pDimScale->SetScaleFactor();
                
                    // If we failed in any of the conversions then warn the user and fail
                    if (!SetOk)
                    {
                        InformError(_R(IDE_OPTS_INVALIDSCALING));
                        return FALSE;
                    }
                }
                
                // Set up a possibly new active state
                pDimScale->SetActiveState(Active);

            }

            // Now tell other users of units/scaling factors that there they are likely
            // to need to update any currently displayed units. 
            Document *pCurrentDoc = (Document *)pSpread->FindOwnerDoc();
            BROADCAST_TO_ALL(OptionsChangingMsg(pCurrentDoc, OptionsChangingMsg::NEWUNITS));
// unfortunately pScopeDoc is NULL!, and since pCurrentDoc is calulated I thought it ought to use! - Ed 17/10/95
//          BROADCAST_TO_ALL(OptionsChangingMsg(pScopeDocument, OptionsChangingMsg::OptionsState::NEWUNITS));

            // Make sure the document is marked as modified.
            pCurrentDoc->SetModified(TRUE);
            
            // And note the new states
            OldActiveState = Active;
            OldDrawingStr = DrawingStr;
            OldRealStr = RealStr;
        }
    }
//  else
//      ERROR2(FALSE,_R(IDE_OPTS_READPREF_SCALE));
    
    return TRUE;
}

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

>   BOOL ScaleTab::GreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/2/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has closed all documents 
    Errors:     -
    SeeAlso:    ScaleTab::UngreySection;

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

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

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_SCALE)); // The ScaleTab identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Make sure the information field displaying the name of the current document
    // is correct.
    String_256  DocumentName(_R(IDT_OPTS_SCALING_INFO)); 
    DocumentName += *GetDocumentName();
    pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_INFO), DocumentName);

    // 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 ScaleTab::UngreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/2/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has selected a new document 
    Errors:     -
    SeeAlso:    ScaleTab::UngreySection;

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

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

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_SCALE)); // The ScaleTab identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Make sure the information field displaying the name of the current document
    // is correct.
    String_256  DocumentName(_R(IDT_OPTS_SCALING_INFO)); 
    DocumentName += *GetDocumentName();
    pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_INFO), DocumentName);

    // 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 ScaleTab::ChangeControlStatus(const BOOL Status)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/2/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called to grey/ungrey all controls on this tab. 
    Errors:     -
    SeeAlso:    ScaleTab::GreySection;  ScaleTab::UngreySection;

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

BOOL ScaleTab::ChangeControlStatus(const BOOL Status)
{
    // Grey/ungrey the information fields
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_INFO), Status);

    // Grey/ungrey the controlling Switch
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_USESCALEFACTOR), Status);

    // Grey/ungrey the display fields 
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWINGSCALE), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALSCALE), Status);

    // Grey/ungrey the static text fields accordingly 
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEGROUP), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEEG), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALWORLD), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWING), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO2), Status);

    return TRUE;
}           

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

>   BOOL ScaleTab::UpdateSection(String_256 *DocumentName)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    4/2/95
    Inputs:     Name of document
    Outputs:    -
    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:    ScaleTab::GreySection; ScaleTab::UngreySection; ScaleTab::InitSection;

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

BOOL ScaleTab::UpdateSection(String_256 *DocumentName)
{
TRACEUSER( "Neville", _T("ScaleTab::UpdateSection\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"ScaleTab::UpdateSection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_SCALE)); // The ScaleTab identifier
    if (!ok)
        return TRUE;        // page not present

    // Remove any lists that we have created.
    //pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_SIZELIST));

    // Call the normal init section code
    return InitSection();
}

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

>   BOOL ScaleTab::HandleMsg(DialogMsg* Msg)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Handles all the Scale options tabs messages 
    Errors:     -
    SeeAlso:    -

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

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

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_SCALE)); // The Scale tab identifier
    if (!ok)
        return TRUE;        // page not present

    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:
            OptionsTabs::SetApplyNowState(TRUE);
            if (Msg->GadgetID == _R(IDC_OPTS_USESCALEFACTOR))
            {
                BOOL Valid;
                BOOL Active = pPrefsDlg->GetLongGadgetValue(_R(IDC_OPTS_USESCALEFACTOR),0,1,0,&Valid);
                // Grey/ungrey the editable fields accordingly 
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWINGSCALE), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALSCALE), Active);
                // Grey/ungrey the static text fields accordingly 
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEEG), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALWORLD), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWING), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO2), Active);
                pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEGROUP), Active);
            }
            break; 
        case DIM_SELECTION_CHANGED:
        case DIM_TEXT_CHANGED:
            OptionsTabs::SetApplyNowState(TRUE);
            break;
        default:
            break;
    }

    return TRUE;
}  


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

>   BOOL ScaleTab::InitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/1/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Sets initial values for the Scale section of the options dialog box.
                This section includes the:-
    Errors:     -
    SeeAlso:    AppPrefsDlg; OptionsTabs;

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

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

//  BOOL ReadOk = FALSE;    // Flag to say whether the preference value was read ok 

    // Make sure the information field displaying the name of the current document
    // is correct.
    String_256  DocumentName(_R(IDT_OPTS_SCALING_INFO)); 
    DocumentName += *GetDocumentName();
    pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_INFO), DocumentName);

    // Section = Scale settings

    DocView* pSelectedView = DocView::GetSelected();
    // This may now be a valid state so must not error
    //ERROR3IF(pSelectedView == NULL,"ScaleTab::InitSection Where's the current view eh?");
    if (pSelectedView != NULL)
    {
        Spread* pSpread = pSelectedView->GetFirstSelectedSpread();

        // If no selected spread then use the visible spread
        if (pSpread == NULL)
            pSpread = pSelectedView->GetVisibleSpread();

        // If no selected spread then use the first spread
        // Of course, this should not be here but above routines seem to return
        // null a bit too often for my liking
        if (pSpread == NULL)
        {
TRACEUSER( "Neville", _T("ScaleTab::InitSection BODGE! using 1st spread\n"));
            Document* pSelectedDoc = Document::GetSelected();
            if (pSelectedDoc !=NULL )
                pSpread = pSelectedDoc->FindFirstSpread();
        }

        // Go and get a pointer to the scaling values
        if (pSpread != NULL)
        {
            pDimScale = pSpread->GetPtrDimScale();
            if (pDimScale != NULL)
            {
                // And now show the initial state of the controls given this
                // scaling 
                ShowScaleDetails();
            }
        }
    }
    else
    {
        // If no current view then ensure section is greyed
        GreySection();
    }

    return TRUE;
}

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

>   void ScaleTab::ShowScaleDetails()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/6/94
    Inputs:     - 
    Outputs:    -
    Returns:    -
    Purpose:    Shows scale factor details in the dialog
    Errors:     -
    SeeAlso:    -

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

BOOL ScaleTab::ShowScaleDetails()
{
TRACEUSER( "Neville", _T("ScaleTab::ShowScaleDetails\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"ScaleTab::ShowScaleDetails called with no dialog pointer");
    ERROR2IF(pDimScale == NULL,FALSE,"ScaleTab::ShowScaleDetails pDimScale is NULL");
    
    String_32 Str;

    // Get current state of dimension scaling to see whether it is active or
    // noton this view. 
    BOOL Active = pDimScale->IsActive();
    pPrefsDlg->SetLongGadgetValue(_R(IDC_OPTS_USESCALEFACTOR), (INT32)Active);
    // remember entry states in our class variables
    OldActiveState = Active;

    Str = pDimScale->GetDrawingScaleStr();
    pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_DRAWINGSCALE), Str);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWINGSCALE), Active);
    // remember entry states in our class variables
    OldDrawingStr = Str;

    Str = pDimScale->GetRealScaleStr();
    pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_REALSCALE), Str);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALSCALE), Active);
    // remember entry states in our class variables
    OldRealStr = Str;

    // Grey/ungrey the static text fields accordingly 
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEEG), Active);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_REALWORLD), Active);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_DRAWING), Active);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO), Active);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALETO2), Active);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_SCALEGROUP), Active);
    
    return TRUE;
}

#endif //webster

---