rectitem.cpp
资源名称:COM 原理与应用.rar [点击查看]
上传用户:biuytresa
上传日期:2007-12-07
资源大小:721k
文件大小:7k
源码类别:
DNA
开发平台:
Visual C++
- // rectitem.cpp : implementation of the CRectItem class
- //
- // This is a part of the Microsoft Foundation Classes C++ library.
- // Copyright (C) 1992-1998 Microsoft Corporation
- // All rights reserved.
- //
- // This source code is only intended as a supplement to the
- // Microsoft Foundation Classes Reference and related
- // electronic documentation provided with the library.
- // See these sources for detailed information regarding the
- // Microsoft Foundation Classes product.
- #include "stdafx.h"
- #include <afxpriv.h>
- #include "oclient.h"
- #include "maindoc.h"
- #include "mainview.h"
- #include "rectitem.h"
- #ifdef _DEBUG
- #undef THIS_FILE
- static char BASED_CODE THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- IMPLEMENT_SERIAL(CRectItem, COleClientItem, 0)
- CRectItem::CRectItem(COleDocument* pContainer) : COleClientItem(pContainer) ,
- m_ptPos(10, -10), m_sizeContent(0,0), m_sizeIcon(0,0),
- m_sizeContentExtent(0, 0), m_sizeIconExtent(0, 0)
- {
- }
- CRectItem::CRectItem() : m_ptPos(10, -10), m_sizeContent(0,0), m_sizeIcon(0,0),
- m_sizeContentExtent(0, 0), m_sizeIconExtent(0, 0)
- {
- }
- CRectItem::~CRectItem()
- {
- }
- void CRectItem::Invalidate(CView* pNotThisView)
- {
- GetDocument()->UpdateAllViews(pNotThisView, 0, this);
- }
- /////////////////////////////////////////////////////////////////////////////
- CSize CRectItem::GetSize()
- {
- DVASPECT dv = GetDrawAspect();
- if (dv == DVASPECT_ICON)
- return m_sizeIcon;
- else
- return m_sizeContent;
- }
- CSize CRectItem::GetBaseSize()
- {
- DVASPECT dv = GetDrawAspect();
- if (dv == DVASPECT_ICON)
- return m_sizeIconExtent;
- else
- return m_sizeContentExtent;
- }
- void CRectItem::SetSize(CSize size)
- {
- DVASPECT dv = GetDrawAspect();
- if (dv == DVASPECT_ICON)
- m_sizeIcon = size;
- else
- m_sizeContent = size;
- }
- void CRectItem::SetBaseSize(CSize size)
- {
- DVASPECT dv = GetDrawAspect();
- if (dv == DVASPECT_ICON)
- m_sizeIconExtent = size;
- else
- m_sizeContentExtent = size;
- }
- void CRectItem::SetRect(CRect& rect)
- {
- m_ptPos = rect.TopLeft();
- SetSize(rect.Size());
- }
- BOOL CRectItem::UpdateExtent()
- {
- // get size in pixels
- CSize size;
- if (!GetCachedExtent(&size))
- return FALSE; // blank
- Invalidate(); // invalidate the old size/position
- CSize sizeBase = GetBaseSize();
- if (size == sizeBase) // no change
- return FALSE;
- // if new object (i.e. m_extent is empty) setup position
- if (sizeBase == CSize(0,0))
- {
- // convert to document coords
- CSize sizeNew(MulDiv(size.cx, 10, 254), - MulDiv(size.cy, 10, 254));
- SetSize(sizeNew);
- }
- else
- {
- if (!IsInPlaceActive() && size != sizeBase)
- {
- // data changed and not inplace, so scale up rect as well
- CSize sizeCur = GetSize();
- sizeCur.cx = MulDiv(sizeCur.cx, size.cx, sizeBase.cx);
- sizeCur.cy = - MulDiv(-sizeCur.cy, size.cy, sizeBase.cy);
- SetSize(sizeCur);
- }
- }
- SetBaseSize(size);
- Invalidate(); // as well as the new size/position
- return TRUE;
- }
- BOOL CRectItem::OnChangeItemPosition(const CRect& rectPos)
- {
- CMainView* pView = GetActiveView();
- if (pView == NULL)
- return FALSE;
- ASSERT_VALID(pView);
- CRect rc = rectPos;
- pView->ClientToDoc(rc);
- if (rc != GetRect())
- {
- // invalidate old item
- Invalidate();
- // update to new rectangle
- SetRect(rc);
- GetDocument()->SetModifiedFlag();
- CSize sizeExtent;
- GetCachedExtent(&sizeExtent);
- SetBaseSize(sizeExtent);
- // and invalidate new
- Invalidate();
- }
- return COleClientItem::OnChangeItemPosition(rectPos);
- }
- void CRectItem::OnActivate()
- {
- // allow only one inplace active item per frame
- CMainView* pView = GetActiveView();
- ASSERT_VALID(pView);
- COleClientItem* pItem = GetDocument()->GetInPlaceActiveItem(pView);
- if (pItem != NULL && pItem != this)
- pItem->Close();
- COleClientItem::OnActivate();
- // set selection to an item when it becomes active
- pView->SetSelection(this);
- }
- void CRectItem::OnDeactivateUI(BOOL bUndoable)
- {
- COleClientItem::OnDeactivateUI(bUndoable);
- // hide the object if it is not an outside-in object
- DWORD dwMisc = 0;
- m_lpObject->GetMiscStatus(GetDrawAspect(), &dwMisc);
- if (dwMisc & OLEMISC_INSIDEOUT)
- DoVerb(OLEIVERB_HIDE, NULL);
- }
- void CRectItem::OnChange(OLE_NOTIFICATION nCode, DWORD dwParam)
- {
- COleClientItem::OnChange(nCode, dwParam);
- switch(nCode)
- {
- case OLE_CHANGED:
- UpdateExtent();
- Invalidate();
- break;
- case OLE_CHANGED_ASPECT:
- case OLE_CHANGED_STATE:
- Invalidate();
- break;
- }
- }
- void CRectItem::OnGetItemPosition(CRect& rPosition)
- {
- ASSERT_VALID(this);
- if (GetSize() == CSize(0,0))
- UpdateExtent();
- // copy m_rect, which is in document coordinates
- rPosition = GetRect();
- CMainView* pView = GetActiveView();
- ASSERT_VALID(pView);
- pView->DocToClient(rPosition);
- }
- void CRectItem::Move(CRect &rc)
- {
- // invalidate old rect
- Invalidate();
- // invalidate new
- SetRect(rc);
- Invalidate();
- // update item rect when in-place active
- if (IsInPlaceActive())
- SetItemRects();
- }
- void CRectItem::Serialize(CArchive& ar)
- {
- CRect rect;
- // IMPORTANT: when using "easy" serialize -- call base class FIRST!
- // (not strictly necessary, but a good idea)
- COleClientItem::Serialize(ar);
- // now store/retrieve data specific to CRectItem
- if (ar.IsStoring())
- {
- WORD w = 0x5500; // magic value
- ar << w << m_ptPos << m_sizeIcon << m_sizeIconExtent <<
- m_sizeContent << m_sizeContentExtent;
- }
- else
- {
- WORD w;
- ar >> w >> m_ptPos >> m_sizeIcon >> m_sizeIconExtent >>
- m_sizeContent >> m_sizeContentExtent;
- if (w != 0x5500)
- {
- TRACE0("Bad magic number in front of an item wndn");
- AfxThrowArchiveException(CArchiveException::generic);
- }
- }
- }
- void CRectItem::ResetSize()
- {
- ASSERT_VALID(this);
- Invalidate();
- SetBaseSize(CSize(0, 0));
- UpdateExtent();
- }
- // OnGetClipboardData is used by CopyToClipboard and DoDragDrop
- COleDataSource* CRectItem::OnGetClipboardData(
- BOOL bIncludeLink, LPPOINT lpOffset, LPSIZE lpSize)
- {
- ASSERT_VALID(this);
- COleDataSource* pDataSource = new COleDataSource;
- TRY
- {
- GetNativeClipboardData(pDataSource);
- GetClipboardData(pDataSource, bIncludeLink, lpOffset, lpSize);
- }
- CATCH_ALL(e)
- {
- delete pDataSource;
- THROW_LAST();
- }
- END_CATCH_ALL
- ASSERT_VALID(pDataSource);
- return pDataSource;
- }
- void CRectItem::GetNativeClipboardData(COleDataSource* pDataSource)
- {
- ASSERT_VALID(this);
- ASSERT_VALID(GetDocument());
- // Create a shared file and associate a CArchive with it
- CSharedFile file;
- CArchive ar(&file, CArchive::store);
- // Serialize selected objects to the archive
- Serialize(ar);
- ar.Close();
- pDataSource->CacheGlobalData(CMainDoc::m_cfPrivate, file.Detach());
- }
- /////////////////////////////////////////////////////////////////////////////