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169 lines
4.0 KiB
169 lines
4.0 KiB
// cntritem.h : interface of the CDrawItem class
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//
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// This is a part of the Microsoft Foundation Classes C++ library.
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// Copyright (C) 1992-1993 Microsoft Corporation
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// All rights reserved.
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//
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// This source code is only intended as a supplement to the
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// Microsoft Foundation Classes Reference and Microsoft
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// QuickHelp and/or WinHelp documentation provided with the library.
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// See these sources for detailed information regarding the
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// Microsoft Foundation Classes product.
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#include "stdafx.h"
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#include "SepEdt.h"
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#include "drawdoc.h"
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#include "drawobj.h"
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#include "drawvw.h"
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#include "cntritem.h"
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#ifdef _DEBUG
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#undef THIS_FILE
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static char BASED_CODE THIS_FILE[] = __FILE__;
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#endif
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/////////////////////////////////////////////////////////////////////////////
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// CDrawItem implementation
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IMPLEMENT_SERIAL(CDrawItem, COleClientItem, 0)
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CDrawItem::CDrawItem(CDrawDoc* pContainer, CDrawOleObj* pDrawObj)
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: COleClientItem(pContainer)
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{
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m_pDrawObj = pDrawObj;
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}
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CDrawItem::~CDrawItem()
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{
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if (m_pDrawObj != NULL)
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m_pDrawObj->m_pClientItem = NULL;
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}
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void CDrawItem::OnChange(OLE_NOTIFICATION nCode, DWORD dwParam)
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{
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ASSERT_VALID(this);
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COleClientItem::OnChange(nCode, dwParam);
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switch(nCode)
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{
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case OLE_CHANGED_STATE:
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case OLE_CHANGED_ASPECT:
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m_pDrawObj->Invalidate();
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break;
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case OLE_CHANGED:
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UpdateExtent(); // extent may have changed
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m_pDrawObj->Invalidate();
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break;
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}
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}
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BOOL CDrawItem::OnChangeItemPosition(const CRect& rectPos)
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{
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ASSERT_VALID(this);
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CDrawView* pView = GetActiveView();
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ASSERT_VALID(pView);
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CRect rect = rectPos;
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pView->ClientToDoc(rect);
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if (rect != m_pDrawObj->m_position)
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{
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// invalidate old rectangle
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m_pDrawObj->Invalidate();
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// update to new rectangle
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m_pDrawObj->m_position = rect;
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GetExtent(&m_pDrawObj->m_extent);
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// and invalidate new rectangle
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m_pDrawObj->Invalidate();
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// mark document as dirty
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GetDocument()->SetModifiedFlag();
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}
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return COleClientItem::OnChangeItemPosition(rectPos);
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}
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void CDrawItem::OnGetItemPosition(CRect& rPosition)
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{
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ASSERT_VALID(this);
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// update to extent of item if m_position is not initialized
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if (m_pDrawObj->m_position.IsRectEmpty())
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UpdateExtent();
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// copy m_position, which is in document coordinates
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CDrawView* pView = GetActiveView();
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ASSERT_VALID(pView);
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rPosition = m_pDrawObj->m_position;
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pView->DocToClient(rPosition);
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}
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void CDrawItem::Serialize(CArchive& ar)
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{
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ASSERT_VALID(this);
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// Call base class first to read in COleClientItem data.
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// Note: this sets up the m_pDocument pointer returned from
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// CDrawItem::GetDocument, therefore it is a good idea
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// to call the base class Serialize first.
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COleClientItem::Serialize(ar);
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// now store/retrieve data specific to CDrawItem
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if (ar.IsStoring())
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{
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// TODO: add storing code here
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}
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else
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{
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// TODO: add loading code here
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}
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}
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BOOL CDrawItem::UpdateExtent()
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{
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CSize size;
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if (!GetExtent(&size) || size == m_pDrawObj->m_extent)
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return FALSE; // blank
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// if new object (i.e. m_extent is empty) setup position
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if (m_pDrawObj->m_extent == CSize(0, 0))
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{
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m_pDrawObj->m_position.right =
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m_pDrawObj->m_position.left + MulDiv(size.cx, 10, 254);
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m_pDrawObj->m_position.bottom =
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m_pDrawObj->m_position.top - MulDiv(size.cy, 10, 254);
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}
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// else data changed so scale up rect as well
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else if (!IsInPlaceActive() && size != m_pDrawObj->m_extent)
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{
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m_pDrawObj->m_position.right = m_pDrawObj->m_position.left +
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MulDiv(m_pDrawObj->m_position.Width(), size.cx, m_pDrawObj->m_extent.cx);
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m_pDrawObj->m_position.bottom = m_pDrawObj->m_position.top +
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MulDiv(m_pDrawObj->m_position.Height(), size.cy, m_pDrawObj->m_extent.cy);
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}
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m_pDrawObj->m_extent = size;
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m_pDrawObj->Invalidate(); // redraw to the new size/position
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return TRUE;
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}
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/////////////////////////////////////////////////////////////////////////////
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// CDrawItem diagnostics
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#ifdef _DEBUG
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void CDrawItem::AssertValid() const
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{
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COleClientItem::AssertValid();
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}
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void CDrawItem::Dump(CDumpContext& dc) const
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{
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COleClientItem::Dump(dc);
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}
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#endif
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/////////////////////////////////////////////////////////////////////////////
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