autofig.cpp

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/*
 * AUTOFIG.CPP
 * Cosmo Chapter 14
 *
 * "Figure" object for Cosmo's OLE Automation support, derived
 * from CAutoBase.
 *
 * Copyright (c)1993-1995 Microsoft Corporation, All Right Reserved.
 *
 * Kraig Brockschmidt, Microsoft
 * Internet  :  [e-mail]
 * Compuserve:  INTERNET>[e-mail]
 */


#include "cosmo.h"


/*
 * CAutoFigure::CAutoFigure
 * CAutoFigure::~CAutoFigure
 *
 * Constructor Parameters:
 *  pDoc            PCCosmoDoc to the dpcument object that we
 *                  use to implement much of this interface.
 */

CAutoFigure::CAutoFigure(PCCosmoDoc pDoc)
    : CAutoBase(pDoc, pDoc->m_hInst, IID_ICosmoFigure
    , DIID_DICosmoFigure, ObjectDestroyed)
    {
    return;
    }


/*
 * CAutoFigure::QueryInterface
 * CAutoFigure::AddRef
 * CAutoFigure::Release
 */

STDMETHODIMP CAutoFigure::QueryInterface(REFIID riid, PPVOID ppv)
    {
    *ppv=NULL;

    if (IID_IUnknown==riid || IID_ICosmoFigure==riid)
        *ppv=(IUnknown *)this;

    if (IID_IDispatch==riid || m_diid==riid)
        *ppv=m_pImpIDispatch;

    if (IID_IExternalConnection==riid)
        *ppv=m_pImpIExtConn;

    if (NULL!=*ppv)
        {
        ((LPUNKNOWN)*ppv)->AddRef();
        return NOERROR;
        }

    return ResultFromScode(E_NOINTERFACE);
    }

STDMETHODIMP_(ULONG) CAutoFigure::AddRef(void)
    {
    return ++m_cRef;
    }

STDMETHODIMP_(ULONG) CAutoFigure::Release(void)
    {
    /*
     * Since this object might have come from a class factory,
     * we count it's existence (see NewFigure below) for
     * controlling shutdown of the application when we call
     * ObjectDestroyed.  Otherwise we always close the document.
     */
    if (0L!=--m_cRef)
        return m_cRef;

    put_Visible(FALSE);
    SendMessage(m_pDoc->Window(), WM_CLOSE, 0, 0L);

    if (NULL!=m_pfnDestroy)
        (*m_pfnDestroy)();

    return 0L;
    }


/*
 * CAutoFigure::VTableInterface
 *
 * Purpose:
 *  Returns the right vtable pointer to use when calling
 *  ITypeInfo::Invoke (see CImpIDispatch::Invoke in AUTOBASE.CPP).
 */
void *CAutoFigure::VTableInterface(void)
    {
    return (ICosmoFigure *)this;
    }



//All that follows is the ICosmoFigure implementation

/*
 * CAutoFigure::Application
 * CAutoFigure::Parent
 * Properties, read-only
 *
 * The application object (CAutoApp) in which we're contained,
 * which is stored in the frame object
 */

STDMETHODIMP_(IDispatch *) CAutoFigure::get_Application(void)
    {
    PCCosmoFrame    pFR;

    pFR=(PCCosmoFrame)m_pDoc->m_pFR;
    return pFR->AutoApp()->get_Application();
    }

STDMETHODIMP_(IDispatch *) CAutoFigure::get_Parent(void)
    {
    return get_Application();
    }


/*
 * CAutoFigure::FullName, Name, Path
 * Properties, read-only
 *
 * Retrieve the full pathname of the figure file (FullName),
 * just the file name (Name), or just the path (Path).
 *
 * Note that these functions are very similar to the same
 * ones in CAutoApp, and there is probably some code that could
 * be shared between them, but this sample won't bother with
 * such an optimization.
 */

STDMETHODIMP_(BSTR) CAutoFigure::get_FullName(void)
    {
    if ((TCHAR)0==m_pDoc->m_szFile[0])
        return NULL;

   #ifdef WIN32ANSI
    OLECHAR     szTemp[512];

    MultiByteToWideChar(CP_ACP, 0, m_pDoc->m_szFile, -1, szTemp, 512);
    return SysAllocString(szTemp);
   #else
    return SysAllocString(m_pDoc->m_szFile);
   #endif
    }

STDMETHODIMP_(BSTR) CAutoFigure::get_Name(void)
    {
    BSTR        bstrFull=NULL;
    BSTR        bstrName=NULL;
    const int   cch=256;
    TCHAR       szName[256];

    //Get the full path
    bstrFull=get_FullName();

    if (NULL==bstrFull)
        return NULL;

    //Now retrieve just the filename
   #ifdef WIN32ANSI
    char        szTemp[cch];
    OLECHAR     szTempW[cch];

    WideCharToMultiByte(CP_ACP, 0, bstrFull, -1, szTemp
        , cch, NULL, NULL);
    if (0==GetFileTitle(szTemp, szName, cch))
        {
        MultiByteToWideChar(CP_ACP, 0, szName, -1, szTempW, cch);
        bstrName=SysAllocString(szTempW);
        }
   #else
    if (0==GetFileTitle(bstrFull, szName, cch))
        bstrName=SysAllocString(szName);
   #endif

    SysFreeString(bstrFull);
    return bstrName;
    }

STDMETHODIMP_(BSTR) CAutoFigure::get_Path(void)
    {
    BSTR        bstrFull=NULL;
    BSTR        bstrName=NULL;
    BSTR        bstrPath=NULL;

    bstrFull=get_FullName();

    if (NULL==bstrFull)
        return NULL;

    bstrName=get_Name();

    if (NULL!=bstrName)
        {
        LPOLESTR    psz;

        /*
         * Find the position of bstrName in bstrFull then copy
         * only charaters up to that point into bstrPath.
         */
       #ifdef WIN32ANSI
        psz=wcsstr(bstrFull, bstrName);
       #else
        psz=_tcsstr(bstrFull, bstrName);
       #endif

        //The -1 accounts for the \ before the filename
        bstrPath=SysAllocStringLen(bstrFull
            , ((psz-bstrFull)/sizeof(TCHAR))-1);
        SysFreeString(bstrName);
        }

    SysFreeString(bstrFull);
    return bstrPath;
    }


/*
 * CAutoFigure::Saved
 * Property, read-only
 *
 * TRUE if the document is clean, FALSE otherwise.
 */

STDMETHODIMP_(VARIANT_BOOL) CAutoFigure::get_Saved(void)
    {
    return !m_pDoc->FDirtyGet();
    }


/*
 * CAutoFigure::NumberOfPoints
 * Property, read-only
 *
 * Number of points in the current figure.
 */

STDMETHODIMP_(short)CAutoFigure::get_NumberOfPoints(void)
    {
    POLYLINEDATA    pl;

    m_pDoc->m_pPL->DataGet(&pl, VERSIONCURRENT);
    return pl.cPoints;
    }


/*
 * CAutoFigure::BackColor
 * CAutoFigure::LineColor
 * Properties, read-write
 *
 * Colors used in the figure.
 */

STDMETHODIMP_(long) CAutoFigure::get_BackColor(void)
    {
    return m_pDoc->ColorGet(POLYLINECOLOR_BACKGROUND);
    }

STDMETHODIMP_(void) CAutoFigure::put_BackColor(long clrBack)
    {
    m_pDoc->ColorSet(POLYLINECOLOR_BACKGROUND, clrBack);
    return;
    }

STDMETHODIMP_(long) CAutoFigure::get_LineColor(void)
    {
    return m_pDoc->ColorGet(POLYLINECOLOR_LINE);
    }

STDMETHODIMP_(void) CAutoFigure::put_LineColor(long clrLine)
    {
    m_pDoc->ColorSet(POLYLINECOLOR_LINE, clrLine);
    return;
    }


/*
 * CAutoFigure::LineStyle
 * Property, read-write
 *
 * Line style used to draw the figure
 */

STDMETHODIMP_(short)CAutoFigure::get_LineStyle(void)
    {
    return m_pDoc->LineStyleGet();
    }

STDMETHODIMP_(void) CAutoFigure::put_LineStyle(short iStyle)
    {
    m_pDoc->LineStyleSet(iStyle);
    return;
    }


/*
 * CAutoFigure::Left, Top, Width, Height
 * Properties, read-write
 *
 * Horizontal (Left) and vertical (Top) positions of the frame
 * window from the left and top edges of the application client
 * area; horizontal (Width) and vertical (Height) dimensions of
 * document window.  All of these functions call our private member
 * MoveSize, a helper function.
 */

STDMETHODIMP_(long) CAutoFigure::get_Left(void)
    {
    return MoveSize(MOVESIZEACTION_GETLEFT, 0, 0, 0, 0);
    }

STDMETHODIMP_(void) CAutoFigure::put_Left(long x)
    {
    MoveSize(MOVESIZEACTION_LEFT, x, 0, 0, 0);
    return;
    }

STDMETHODIMP_(long) CAutoFigure::get_Top(void)
    {
    return MoveSize(MOVESIZEACTION_GETTOP, 0, 0, 0, 0);
    }

STDMETHODIMP_(void) CAutoFigure::put_Top(long y)
    {
    MoveSize(MOVESIZEACTION_TOP, 0, y, 0, 0);
    return;
    }

STDMETHODIMP_(long) CAutoFigure::get_Width(void)
    {
    return MoveSize(MOVESIZEACTION_GETWIDTH, 0, 0, 0, 0);
    }

STDMETHODIMP_(void) CAutoFigure::put_Width(long cx)
    {
    MoveSize(MOVESIZEACTION_WIDTH, 0, 0, cx, 0);
    return;
    }

STDMETHODIMP_(long) CAutoFigure::get_Height(void)
    {
    return MoveSize(MOVESIZEACTION_GETHEIGHT, 0, 0, 0, 0);
    }

STDMETHODIMP_(void) CAutoFigure::put_Height(long cy)
    {
    MoveSize(MOVESIZEACTION_HEIGHT, 0, 0, 0, cy);
    return;
    }



/*
 * CAutoFigure::Visible
 * Properties, read-write
 *
 * Controls visibility of the figure window (which is hidden by