深入浅出MFC第2版(PDF格式)-第174部分
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#0031 void FinishStroke();
#0032
#0033 public:
#0034 virtual void Serialize(CArchive& ar);
#0035 };
#0036
#0037 /////////////////////////////////////////////////////////////////
#0038
#0039 class CScribbleDoc : public CDocument
#0040 {
#0041 protected: // create from serialization only
#0042 CScribbleDoc();
#0043 DECLARE_DYNCREATE(CScribbleDoc)
#0044
#0045 // Attributes
#0046 protected:
#0047 // The document keeps track of the current pen width on
#0048 // behalf of all views。 We'd like the user interface of
#0049 // Scribble to be such that if the user chooses the Draw
#0050 // Thick Line mand; it will apply to all views; not just
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第五篇 附錄
#0051 // the view that currently has the focus。
#0052
#0053 UINT m_nPenWidth; // current user…selected pen width
#0054 BOOL m_bThickPen; // TRUE if current pen is thick
#0055 UINT m_nThinWidth;
#0056 UINT m_nThickWidth;
#0057 CPen m_penCur; // pen created according to
#0058 // user…selected pen style (width)
#0059 public:
#0060 CTypedPtrList m_strokeList;
#0061 CPen* GetCurrentPen() { return &m_penCur; }
#0062
#0063 protected:
#0064 CSize m_sizeDoc;
#0065 public:
#0066 CSize GetDocSize() { return m_sizeDoc; }
#0067
#0068 // Operations
#0069 public:
#0070 CStroke* NewStroke();
#0071
#0072 // Overrides
#0073 // ClassWizard generated virtual function overrides
#0074 //{{AFX_VIRTUAL(CScribbleDoc)
#0075 public:
#0076 virtual BOOL OnNewDocument();
#0077 virtual void Serialize(CArchive& ar);
#0078 virtual BOOL OnOpenDocument(LPCTSTR lpszPathName);
#0079 virtual void DeleteContents();
#0080 //}}AFX_VIRTUAL
#0081
#0082 // Implementation
#0083 protected:
#0084 void ReplacePen();
#0085
#0086 public:
#0087 virtual ~CScribbleDoc();
#0088 #ifdef _DEBUG
#0089 virtual void AssertValid() const;
#0090 virtual void Dump(CDumpContext& dc) const;
#0091 #endif
#0092
#0093 protected:
#0094 void InitDocument();
#0095
#0096 // Generated message map functions
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附錄B Scribble Step5 完整原始碼
#0097 protected:
#0098 //{{AFX_MSG(CScribbleDoc)
#0099 afx_msg void OnEditClearAll();
#0100 afx_msg void OnPenThickOrThin();
#0101 afx_msg void OnUpdateEditClearAll(CCmdUI* pCmdUI);
#0102 afx_msg void OnUpdatePenThickOrThin(CCmdUI* pCmdUI);
#0103 afx_msg void OnPenWidths();
#0104 //}}AFX_MSG
#0105 DECLARE_MESSAGE_MAP()
#0106 };
SCRIBBLEDOC。CPP
#0001 #include 〃stdafx。h〃
#0002 #include 〃Scribble。h〃
#0003
#0004 #include 〃ScribDoc。h〃
#0005 #include 〃PenDlg。h〃
#0006
#0007 #ifdef _DEBUG
#0008 #define new DEBUG_NEW
#0009 #undef THIS_FILE
#0010 static char THIS_FILE'' = __FILE__;
#0011 #endif
#0012
#0013 /////////////////////////////////////////////////////////////////
#0014 // CScribbleDoc
#0015
#0016 IMPLEMENT_DYNCREATE(CScribbleDoc; CDocument)
#0017
#0018 BEGIN_MESSAGE_MAP(CScribbleDoc; CDocument)
#0019 //{{AFX_MSG_MAP(CScribbleDoc)
#0020 ON_MAND(ID_EDIT_CLEAR_ALL; OnEditClearAll)
#0021 ON_MAND(ID_PEN_THICK_OR_THIN; OnPenThickOrThin)
#0022 ON_UPDATE_MAND_UI(ID_EDIT_CLEAR_ALL; OnUpdateEditClearAll)
#0023 ON_UPDATE_MAND_UI(ID_PEN_THICK_OR_THIN; OnUpdatePenThickOrThin)
#0024 ON_MAND(ID_PEN_WIDTHS; OnPenWidths)
#0025 //}}AFX_MSG_MAP
#0026 END_MESSAGE_MAP()
#0027
#0028 /////////////////////////////////////////////////////////////////
#0029 // CScribbleDoc construction/destruction
#0030
#0031 CScribbleDoc::CScribbleDoc()
#0032 {
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#0033 // TODO: add one…time construction code here
#0034
#0035 }
#0036
#0037 CScribbleDoc::~CScribbleDoc()
#0038 {
#0039 }
#0040
#0041 BOOL CScribbleDoc::OnNewDocument()
#0042 {
#0043 if (!CDocument::OnNewDocument())
#0044 return FALSE;
#0045 InitDocument();
#0046 return TRUE;
#0047 }
#0048
#0049 /////////////////////////////////////////////////////////////////
#0050 // CScribbleDoc serialization
#0051
#0052 void CScribbleDoc::Serialize(CArchive& ar)
#0053 {
#0054 if (ar。IsStoring())
#0055 {
#0056 ar 》 m_sizeDoc;
#0061 }
#0062 m_strokeList。Serialize(ar);
#0063 }
#0064
#0065 ////////////////////////////////////////////////////////////////
#0066 // CScribbleDoc diagnostics
#0067
#0068 #ifdef _DEBUG
#0069 void CScribbleDoc::AssertValid() const
#0070 {
#0071 CDocument::AssertValid();
#0072 }
#0073
#0074 void CScribbleDoc::Dump(CDumpContext& dc) const
#0075 {
#0076 CDocument::Dump(dc);
#0077 }
#0078 #endif //_DEBUG
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附錄B Scribble Step5 完整原始碼
#0079
#0080 /////////////////////////////////////////////////////////////////
#0081 // CScribbleDoc mands
#0082
#0083 BOOL CScribbleDoc::OnOpenDocument(LPCTSTR lpszPathName)
#0084 {
#0085 if (!CDocument::OnOpenDocument(lpszPathName))
#0086 return FALSE;
#0087 InitDocument();
#0088 return TRUE;
#0089 }
#0090
#0091 void CScribbleDoc::DeleteContents()
#0092 {
#0093 while (!m_strokeList。IsEmpty())
#0094 {
#0095 delete m_strokeList。RemoveHead();
#0096 }
#0097 CDocument::DeleteContents();
#0098 }
#0099
#0100 void CScribbleDoc::InitDocument()
#0101 {
#0102 m_bThickPen = FALSE;
#0103 m_nThinWidth = 2; // default thin pen is 2 pixels wide
#0104 m_nThickWidth = 5; // default thick pen is 5 pixels wide
#0105 ReplacePen(); // initialize pen according to current width
#0106
#0107 // default document size is 800 x 900 screen pixels
#0108 m_sizeDoc = CSize(800;900);
#0109 }
#0110
#0111 CStroke* CScribbleDoc::NewStroke()
#0112 {
#0113 CStroke* pStrokeItem = new CStroke(m_nPenWidth);
#0114 m_strokeList。AddTail(pStrokeItem);
#0115 SetModifiedFlag(); // Mark the document as having been modified; for
#0116 // purposes of confirming File Close。
#0117 return pStrokeItem;
#0118 }
#0119
#0120
#0121
#0122
#0123 /////////////////////////////////////////////////////////////////
#0124 // CStroke
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#0125
#0126 IMPLEMENT_SERIAL(CStroke; CObject; 2)
#0127 CStroke::CStroke()
#0128 {
#0129 // This empty constructor should be used by serialization only
#0130 }