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- /*
- * FIGURE.CPP
- * Schmoo Figure Handler Chapter 11
- *
- * Implementation of the CFigure class that we expose as a SchmooFigure
- * Object in this handler.
- *
- * Copyright (c)1993 Microsoft Corporation, All Rights Reserved
- *
- * Kraig Brockschmidt, Software Design Engineer
- * Microsoft Systems Developer Relations
- *
- * Internet : kraigb@microsoft.com
- * Compuserve: >INTERNET:kraigb@microsoft.com
- */
-
-
- #include "hschmoo.h"
-
-
- /*
- * CFigure:CFigure
- * CFigure::~CFigure
- *
- * Constructor Parameters:
- * punkOuter LPUNKNOWN of the controlling unknown.
- * pfnDestroy LPFNDESTROYED to call when an object is destroyed.
- * hInst HINSTANCE of the application we're in.
- */
-
- CFigure::CFigure(LPUNKNOWN punkOuter, LPFNDESTROYED pfnDestroy
- , HINSTANCE hInst)
- {
- m_cRef=0;
- m_punkOuter=punkOuter;
- m_pfnDestroy=pfnDestroy;
- m_clsID=CLSID_Schmoo2Figure;
-
- m_cf=RegisterClipboardFormat(SZPOLYLINECLIPFORMAT);
-
- //NULL any contained interfaces initially.
- m_pIOleObject =NULL;
- m_pIViewObject =NULL;
- m_pIPersistStorage =NULL;
- m_pIAdviseSink =NULL;
-
- m_pDefIUnknown =NULL;
- m_pDefIOleObject =NULL;
- m_pDefIViewObject =NULL;
- m_pDefIPersistStorage=NULL;
- m_pDefIDataObject =NULL;
-
- m_pIAdvSinkView =NULL;
- m_dwAdviseFlags =0;
- m_dwAdviseAspects =0;
- m_dwFrozenAspects =0;
-
- return;
- }
-
-
- CFigure::~CFigure(void)
- {
- if (NULL!=m_pIAdvSinkView)
- m_pIAdvSinkView->Release();
-
- if (NULL!=m_pDefIDataObject)
- m_pDefIDataObject->Release();
-
- if (NULL!=m_pDefIPersistStorage)
- m_pDefIPersistStorage->Release();
-
- if (NULL!=m_pDefIViewObject)
- m_pDefIViewObject->Release();
-
- if (NULL!=m_pDefIOleObject)
- m_pDefIOleObject->Release();
-
- if (NULL!=m_pDefIUnknown)
- m_pDefIUnknown->Release();
-
- if (NULL!=m_pIAdviseSink)
- delete m_pIAdviseSink;
-
- if (NULL!=m_pIPersistStorage)
- delete m_pIPersistStorage;
-
- if (NULL!=m_pIViewObject)
- delete m_pIViewObject;
-
- if (NULL!=m_pIOleObject)
- delete m_pIOleObject;
-
- return;
- }
-
-
-
-
- /*
- * CFigure::FInit
- *
- * Purpose:
- * Performs any intiailization of a CFigure that's prone to failure
- * that we also use internally before exposing the object outside
- * this DLL.
- *
- * Parameters:
- * None
- *
- * Return Value:
- * BOOL TRUE if the function is successful, FALSE otherwise.
- */
-
- BOOL CFigure::FInit(void)
- {
- LPUNKNOWN pIUnknown=(LPUNKNOWN)this;
- HRESULT hr;
- DWORD dwConn;
- FORMATETC fe;
-
- if (NULL!=m_punkOuter)
- pIUnknown=m_punkOuter;
-
- //First create our interfaces.
- m_pIOleObject=new CImpIOleObject(this, pIUnknown);
-
- if (NULL==m_pIOleObject)
- return FALSE;
-
- m_pIViewObject=new CImpIViewObject(this, pIUnknown);
-
- if (NULL==m_pIViewObject)
- return FALSE;
-
- m_pIPersistStorage=new CImpIPersistStorage(this, pIUnknown);
-
- if (NULL==m_pIPersistStorage)
- return FALSE;
-
- m_pIAdviseSink=new CImpIAdviseSink(this, pIUnknown);
-
- if (NULL==m_pIAdviseSink)
- return FALSE;
-
- /*
- * Get an IUnknown on the default handler, passing pIUnknown
- * as the controlling unknown.
- */
- hr=OleCreateDefaultHandler(CLSID_Schmoo2Figure, pIUnknown, IID_IUnknown
- , (LPLPVOID)&m_pDefIUnknown);
-
- if (FAILED(hr))
- return FALSE;
-
- //Now try to get other interfaces to which we delegate
- hr=m_pDefIUnknown->QueryInterface(IID_IOleObject
- , (LPLPVOID)&m_pDefIOleObject);
-
- if (FAILED(hr))
- return FALSE;
-
- hr=m_pDefIUnknown->QueryInterface(IID_IViewObject
- , (LPLPVOID)&m_pDefIViewObject);
-
- if (FAILED(hr))
- return FALSE;
-
- hr=m_pDefIUnknown->QueryInterface(IID_IDataObject
- , (LPLPVOID)&m_pDefIDataObject);
-
- if (FAILED(hr))
- return FALSE;
-
- hr=m_pDefIUnknown->QueryInterface(IID_IPersistStorage
- , (LPLPVOID)&m_pDefIPersistStorage);
-
- if (FAILED(hr))
- return FALSE;
-
- //Set up an advise on native data so we can keep in sync
- SETDefFormatEtc(fe, m_cf, TYMED_HGLOBAL);
- m_pDefIDataObject->DAdvise(&fe, 0, m_pIAdviseSink, &dwConn);
-
- return TRUE;
- }
-
-
-
-
-
- /*
- * CFigure::QueryInterface
- * CFigure::AddRef
- * CFigure::Release
- *
- * Purpose:
- * IUnknown members for CFigure object.
- */
-
- STDMETHODIMP CFigure::QueryInterface(REFIID riid, LPVOID FAR *ppv)
- {
- *ppv=NULL;
-
- /*
- * The only calls we get here for IUnknown are either in a non-aggregated
- * case or when we're created in an aggregation, so in either we always
- * return our IUnknown for IID_IUnknown.
- */
- if (IsEqualIID(riid, IID_IUnknown))
- *ppv=(LPVOID)this;
-
- if (IsEqualIID(riid, IID_IPersist) || IsEqualIID(riid, IID_IPersistStorage))
- *ppv=(LPVOID)m_pIPersistStorage;
-
- if (IsEqualIID(riid, IID_IOleObject))
- *ppv=(LPVOID)m_pIOleObject;
-
- if (IsEqualIID(riid, IID_IViewObject))
- *ppv=(LPVOID)m_pIViewObject;
-
- //AddRef any interface we'll return.
- if (NULL!=*ppv)
- {
- ((LPUNKNOWN)*ppv)->AddRef();
- return NOERROR;
- }
-
- //Otherwise see if the default handler knows it.
- return m_pDefIUnknown->QueryInterface(riid, ppv);
- }
-
-
- STDMETHODIMP_(ULONG) CFigure::AddRef(void)
- {
- return ++m_cRef;
- }
-
-
- STDMETHODIMP_(ULONG) CFigure::Release(void)
- {
- ULONG cRefT;
-
- cRefT=--m_cRef;
-
- if (0==m_cRef)
- delete this;
-
- return cRefT;
- }
-
-
-
-
-
- /*
- * CFigure::Draw
- *
- * Purpose:
- * Paints the current window to an hDC which might be a printer.
- *
- * Parameters:
- * hDC HDC to draw on, could be a metafile or printer DC.
- * pRect LPRECT defining the bounds on hDC in which to draw.
- * dwAspect DWORD aspect to draw.
- * ptd DVTARGETDEVICE FAR * containing device information.
- * hICDev HDC containing the IC for the device.
- * ppl LPPOLYLINEDATA from which to draw.
- *
- * Return Value:
- * None
- */
-
- void CFigure::Draw(HDC hDC, LPRECT pRect, DWORD dwAspect
- , DVTARGETDEVICE FAR * ptd, HDC hICDev, LPPOLYLINEDATA ppl)
- {
- HBRUSH hBrush;
- HPEN hPen;
- HGDIOBJ hObj1, hObj2;
- UINT i, j;
- POINT pt[2];
- int nDC;
-
- nDC=SaveDC(hDC);
-
- hPen=CreatePen(ppl->iLineStyle, 1, ppl->rgbLine);
- hObj1=SelectObject(hDC, hPen);
-
- hBrush=CreateSolidBrush(ppl->rgbBackground);
- hObj2=SelectObject(hDC, hBrush);
- SetBkColor(hDC, ppl->rgbBackground);
-
- //If we only had one point, draw a dot to indicate it's position.
- if (1==ppl->cPoints)
- {
- pt[0]=ppl->rgpt[0];
- PointScale(pRect, &pt[0], TRUE);
- SetPixel(hDC, pt[0].x, pt[0].y, ppl->rgbLine);
- }
- else
- {
- //Erase the background for bitmaps and metafiles.
- SelectObject(hDC, GetStockObject(NULL_PEN));
- Rectangle(hDC, pRect->left, pRect->top, pRect->right+1, pRect->bottom+1);
- SelectObject(hDC, hPen);
-
- for (i=0; i < ppl->cPoints; i++)
- {
- for (j=i; j < ppl->cPoints; j++)
- {
- pt[0]=ppl->rgpt[i];
- pt[1]=ppl->rgpt[j];
- PointScale(pRect, &pt[0], TRUE);
- PointScale(pRect, &pt[1], TRUE);
- MoveTo(hDC, pt[0].x, pt[0].y);
- LineTo(hDC, pt[1].x, pt[1].y);
- }
- }
- }
-
- SelectObject(hDC, hObj1);
- SelectObject(hDC, hObj2);
- DeleteObject(hBrush);
- DeleteObject(hPen);
-
- RestoreDC(hDC, nDC);
- return;
- }
-
-
-
-
-
-
-
- /*
- * CFIgure::PointScale
- *
- * Purpose:
- * Scales a point from a 0-32767 coordinate to a rectangle relative
- * coordinate.
- *
- * Parameters:
- * pRect LPRECT in which to scale.
- * ppt LPPOINT to convert
- * fUnused BOOL of no use.
- *
- * Return Value:
- * None
- */
-
- void CFigure::PointScale(LPRECT pRect, LPPOINT ppt, BOOL fUnused)
- {
- DWORD cx, cy;
-
- cx=(DWORD)(pRect->right-pRect->left);
- cy=(DWORD)(pRect->bottom-pRect->top);
-
- //Must use DWORD to insure proper scaling.
- ppt->x=pRect->left+(UINT)(((DWORD)ppt->x*cx) >> 15);
- ppt->y=pRect->top+(UINT)(((DWORD)ppt->y*cy) >> 15);
-
- return;
- }
-