drawdoc.cpp

一个VC++绘图源程序

// drawdoc.cpp : implementation of the CDrawDoc 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 "drawcli.h"

#include "drawdoc.h"
#include "drawvw.h"
#include "drawobj.h"
#include "cntritem.h"
#include "summpage.h"
#include "statpage.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CDrawDoc

IMPLEMENT_DYNCREATE(CDrawDoc, COleDocument)

BEGIN_MESSAGE_MAP(CDrawDoc, COleDocument)
	//{{AFX_MSG_MAP(CDrawDoc)
	ON_COMMAND(ID_VIEW_PAPERCOLOR, OnViewPaperColor)
	ON_COMMAND(ID_FILE_SUMMARYINFO, OnFileSummaryInfo)
	//}}AFX_MSG_MAP
	// Enable default OLE container implementation
	ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, COleDocument::OnUpdatePasteMenu)
	ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE_LINK, COleDocument::OnUpdatePasteLinkMenu)
	ON_UPDATE_COMMAND_UI(ID_OLE_EDIT_LINKS, COleDocument::OnUpdateEditLinksMenu)
	ON_COMMAND(ID_OLE_EDIT_LINKS, COleDocument::OnEditLinks)
	ON_UPDATE_COMMAND_UI(ID_OLE_VERB_FIRST, COleDocument::OnUpdateObjectVerbMenu)
		// MAPI support
	ON_COMMAND(ID_FILE_SEND_MAIL, OnFileSendMail)
	ON_UPDATE_COMMAND_UI(ID_FILE_SEND_MAIL, OnUpdateFileSendMail)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDrawDoc construction/destruction

CDrawDoc::CDrawDoc()
{
	EnableCompoundFile();

	m_nMapMode = MM_ANISOTROPIC;
	m_paperColor = RGB(255, 255, 255);
	m_pSummInfo = NULL;
	ComputePageSize();
}

CDrawDoc::~CDrawDoc()
{
	POSITION pos = m_objects.GetHeadPosition();
	while (pos != NULL)
		delete m_objects.GetNext(pos);
	delete m_pSummInfo;
}

BOOL CDrawDoc::OnNewDocument()
{
	if (!COleDocument::OnNewDocument())
		return FALSE;

	// reinitialization code
	// (SDI documents will reuse this document)
	if(m_pSummInfo != NULL)
		delete m_pSummInfo;
	m_pSummInfo = new CSummInfo;
	// Title, Subject, Author, Keywords default to empty string
	// Comments, Template, SavedBy default to empty string
	// LastSave, LastPrint, EditTime, RevNum default to 0
	m_pSummInfo->StartEditTimeCount();
	m_pSummInfo->RecordCreateDate();
	m_pSummInfo->SetNumPages(1);
	// NumWords, NumChars default to 0
	m_pSummInfo->SetAppname( _T("DrawCli") );
	// Security defaults to 0
	return TRUE;
}

BOOL CDrawDoc::OnOpenDocument(LPCTSTR lpszPathName)
{
	if( m_pSummInfo != NULL)
		delete m_pSummInfo;
	m_pSummInfo = new CSummInfo;
	m_pSummInfo->StartEditTimeCount();
	return COleDocument::OnOpenDocument(lpszPathName);
}

BOOL CDrawDoc::OnSaveDocument(LPCTSTR lpszPathName)
{
	m_pSummInfo->RecordSaveDate();
	m_pSummInfo->IncrRevNum();
	m_pSummInfo->SetLastAuthor(m_pSummInfo->GetAuthor());
	m_pSummInfo->AddCountToEditTime();
	m_pSummInfo->StartEditTimeCount();
	return COleDocument::OnSaveDocument(lpszPathName);
}

/////////////////////////////////////////////////////////////////////////////
// CDrawDoc serialization

void CDrawDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		ar << m_paperColor;
		m_objects.Serialize(ar);
		m_pSummInfo->WriteToStorage(m_lpRootStg);
	}
	else
	{
		ar >> m_paperColor;
		m_objects.Serialize(ar);
		m_pSummInfo->ReadFromStorage(m_lpRootStg);
	}

	// By calling the base class COleDocument, we enable serialization
	//  of the container document's COleClientItem objects automatically.
	COleDocument::Serialize(ar);
}


/////////////////////////////////////////////////////////////////////////////
// CDrawDoc implementation

void CDrawDoc::Draw(CDC* pDC, CDrawView* pView)
{
	POSITION pos = m_objects.GetHeadPosition();
	while (pos != NULL)
	{
		CDrawObj* pObj = m_objects.GetNext(pos);
		pObj->Draw(pDC);
		if (pView->m_bActive && !pDC->IsPrinting() && pView->IsSelected(pObj))
			pObj->DrawTracker(pDC, CDrawObj::selected);
	}
}

void CDrawDoc::Add(CDrawObj* pObj)
{
	m_objects.AddTail(pObj);
	pObj->m_pDocument = this;
	SetModifiedFlag();
}

void CDrawDoc::Remove(CDrawObj* pObj)
{
	// Find and remove from document
	POSITION pos = m_objects.Find(pObj);
	if (pos != NULL)
		m_objects.RemoveAt(pos);
	// set document modified flag
	SetModifiedFlag();

	// call remove for each view so that the view can remove from m_selection
	pos = GetFirstViewPosition();
	while (pos != NULL)
		((CDrawView*)GetNextView(pos))->Remove(pObj);
}

// point is in logical coordinates
CDrawObj* CDrawDoc::ObjectAt(const CPoint& point)
{
	CRect rect(point, CSize(1, 1));
	POSITION pos = m_objects.GetTailPosition();
	while (pos != NULL)
	{
		CDrawObj* pObj = m_objects.GetPrev(pos);
		if (pObj->Intersects(rect))
			return pObj;
	}

	return NULL;
}

void CDrawDoc::ComputePageSize()
{
	CSize new_size(850, 1100);  // 8.5" x 11" default

	CPrintDialog dlg(FALSE);
	if (AfxGetApp()->GetPrinterDeviceDefaults(&dlg.m_pd))
	{
		// GetPrinterDC returns a HDC so attach it
		CDC dc;
		HDC hDC= dlg.CreatePrinterDC();
		ASSERT(hDC != NULL);
		dc.Attach(hDC);

		// Get the size of the page in loenglish
		new_size.cx = MulDiv(dc.GetDeviceCaps(HORZSIZE), 1000, 254);
		new_size.cy = MulDiv(dc.GetDeviceCaps(VERTSIZE), 1000, 254);
	}

	// if size changed then iterate over views and reset
	if (new_size != m_size)
	{
		m_size = new_size;
		POSITION pos = GetFirstViewPosition();
		while (pos != NULL)
			((CDrawView*)GetNextView(pos))->SetPageSize(m_size);
	}
}

void CDrawDoc::OnViewPaperColor()
{
	CColorDialog dlg;
	if (dlg.DoModal() != IDOK)
		return;

	m_paperColor = dlg.GetColor();
	SetModifiedFlag();
	UpdateAllViews(NULL);
}

/////////////////////////////////////////////////////////////////////////////
// CDrawDoc diagnostics

#ifdef _DEBUG
void CDrawDoc::AssertValid() const
{
	COleDocument::AssertValid();
}

void CDrawDoc::Dump(CDumpContext& dc) const
{
	COleDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CDrawDoc commands

void CDrawDoc::OnFileSummaryInfo()
{
	ASSERT_VALID(this);

	CPropertySheet sheet( _T("Document Properties") );
	CSummPage summ;
	CStatPage stat;
	sheet.AddPage( &summ );
	sheet.AddPage( &stat );

	summ.m_strAppname = m_pSummInfo->GetAppname();
	summ.m_strTitle   = m_pSummInfo->GetTitle();
	summ.m_strSubj    = m_pSummInfo->GetSubject();
	summ.m_strAuthor  = m_pSummInfo->GetAuthor();
	summ.m_strKeywd   = m_pSummInfo->GetKeywords();
	summ.m_strCmt     = m_pSummInfo->GetComments();
	summ.m_strTempl   = m_pSummInfo->GetTemplate();

	stat.m_strSavedBy    = m_pSummInfo->GetLastAuthor();
	stat.m_strRevNum     = m_pSummInfo->GetRevNum();
	stat.m_strEditTime   = m_pSummInfo->GetEditTime();
	stat.m_strLastPrint  = m_pSummInfo->GetLastPrintDate();
	stat.m_strCreateDate = m_pSummInfo->GetCreateDate();
	stat.m_strLastSave   = m_pSummInfo->GetLastSaveDate();
	stat.m_strNumPages   = m_pSummInfo->GetNumPages();
	stat.m_strNumWords   = m_pSummInfo->GetNumWords();
	stat.m_strNumChars   = m_pSummInfo->GetNumChars();
	stat.m_strSecurity   = m_pSummInfo->GetSecurity();

	if (sheet.DoModal() != IDOK)
		return;

	m_pSummInfo->SetAuthor(summ.m_strAuthor);
	m_pSummInfo->SetKeywords(summ.m_strKeywd);
	m_pSummInfo->SetSubject(summ.m_strSubj);
	m_pSummInfo->SetComments(summ.m_strCmt);
	m_pSummInfo->SetTemplate(summ.m_strTempl);
	m_pSummInfo->SetTitle(summ.m_strTitle);

	SetModifiedFlag();
}