scribdoc.cpp
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上传用户:biuytresa
上传日期:2007-12-07
资源大小:721k
文件大小:8k
源码类别:
DNA
开发平台:
Visual C++
- // ScribDoc.cpp : implementation of the CScribbleDoc 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 "Scribble.h"
- #include "ScribDoc.h"
- #include "ScribItm.h"
- #include "PenDlg.h"
- #include "ScribVw.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleDoc
- IMPLEMENT_DYNCREATE(CScribbleDoc, COleServerDoc)
- BEGIN_MESSAGE_MAP(CScribbleDoc, COleServerDoc)
- //{{AFX_MSG_MAP(CScribbleDoc)
- ON_COMMAND(ID_EDIT_CLEAR_ALL, OnEditClearAll)
- ON_COMMAND(ID_PEN_THICK_OR_THIN, OnPenThickOrThin)
- ON_UPDATE_COMMAND_UI(ID_EDIT_CLEAR_ALL, OnUpdateEditClearAll)
- ON_UPDATE_COMMAND_UI(ID_PEN_THICK_OR_THIN, OnUpdatePenThickOrThin)
- ON_COMMAND(ID_PEN_WIDTHS, OnPenWidths)
- ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleDoc construction/destruction
- CScribbleDoc::CScribbleDoc()
- {
- // Use OLE compound files
- EnableCompoundFile();
- m_sizeDoc = CSize(200, 200);
- }
- CScribbleDoc::~CScribbleDoc()
- {
- }
- BOOL CScribbleDoc::OnNewDocument()
- {
- if (!COleServerDoc::OnNewDocument())
- return FALSE;
- InitDocument();
- return TRUE;
- }
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleDoc serialization
- void CScribbleDoc::Serialize(CArchive& ar)
- {
- if (ar.IsStoring())
- {
- ar << m_sizeDoc;
- }
- else
- {
- ar >> m_sizeDoc;
- }
- m_strokeList.Serialize(ar);
- }
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleDoc diagnostics
- #ifdef _DEBUG
- void CScribbleDoc::AssertValid() const
- {
- COleServerDoc::AssertValid();
- }
- void CScribbleDoc::Dump(CDumpContext& dc) const
- {
- COleServerDoc::Dump(dc);
- }
- #endif //_DEBUG
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleDoc commands
- BOOL CScribbleDoc::OnOpenDocument(LPCTSTR lpszPathName)
- {
- if (!COleServerDoc::OnOpenDocument(lpszPathName))
- return FALSE;
- InitDocument();
- return TRUE;
- }
- void CScribbleDoc::DeleteContents()
- {
- while (!m_strokeList.IsEmpty())
- {
- delete m_strokeList.RemoveHead();
- }
- COleServerDoc::DeleteContents();
- }
- void CScribbleDoc::InitDocument()
- {
- m_bThickPen = FALSE;
- m_nThinWidth = 2; // default thin pen is 2 pixels wide
- m_nThickWidth = 5; // default thick pen is 5 pixels wide
- ReplacePen(); // initialize pen according to current width
- // default document size is 2 x 2 inches
- m_sizeDoc = CSize(200,200);
- }
- CStroke* CScribbleDoc::NewStroke()
- {
- CStroke* pStrokeItem = new CStroke(m_nPenWidth);
- m_strokeList.AddTail(pStrokeItem);
- SetModifiedFlag(); // Mark the document as having been modified, for
- // purposes of confirming File Close.
- return pStrokeItem;
- }
- /////////////////////////////////////////////////////////////////////////////
- // CStroke
- IMPLEMENT_SERIAL(CStroke, CObject, 2)
- CStroke::CStroke()
- {
- // This empty constructor should be used by serialization only
- }
- CStroke::CStroke(UINT nPenWidth)
- {
- m_nPenWidth = nPenWidth;
- m_rectBounding.SetRectEmpty();
- }
- void CStroke::Serialize(CArchive& ar)
- {
- if (ar.IsStoring())
- {
- ar << m_rectBounding;
- ar << (WORD)m_nPenWidth;
- m_pointArray.Serialize(ar);
- }
- else
- {
- ar >> m_rectBounding;
- WORD w;
- ar >> w;
- m_nPenWidth = w;
- m_pointArray.Serialize(ar);
- }
- }
- BOOL CStroke::DrawStroke(CDC* pDC)
- {
- CPen penStroke;
- if (!penStroke.CreatePen(PS_SOLID, m_nPenWidth, RGB(0,0,0)))
- return FALSE;
- CPen* pOldPen = pDC->SelectObject(&penStroke);
- pDC->MoveTo(m_pointArray[0]);
- for (int i=1; i < m_pointArray.GetSize(); i++)
- {
- pDC->LineTo(m_pointArray[i]);
- }
- pDC->SelectObject(pOldPen);
- return TRUE;
- }
- void CScribbleDoc::OnEditClearAll()
- {
- DeleteContents();
- SetModifiedFlag(); // Mark the document as having been modified, for
- // purposes of confirming File Close.
- UpdateAllViews(NULL);
- }
- void CScribbleDoc::OnPenThickOrThin()
- {
- // Toggle the state of the pen between thin or thick.
- m_bThickPen = !m_bThickPen;
- // Change the current pen to reflect the new user-specified width.
- ReplacePen();
- }
- void CScribbleDoc::ReplacePen()
- {
- m_nPenWidth = m_bThickPen? m_nThickWidth : m_nThinWidth;
- // Change the current pen to reflect the new user-specified width.
- m_penCur.DeleteObject();
- m_penCur.CreatePen(PS_SOLID, m_nPenWidth, RGB(0,0,0)); // solid black
- }
- void CScribbleDoc::OnUpdateEditClearAll(CCmdUI* pCmdUI)
- {
- // Enable the command user interface object (menu item or tool bar
- // button) if the document is non-empty, i.e., has at least one stroke.
- pCmdUI->Enable(!m_strokeList.IsEmpty());
- }
- void CScribbleDoc::OnUpdatePenThickOrThin(CCmdUI* pCmdUI)
- {
- // Add check mark to Draw Thick Line menu item, if the current
- // pen width is "thick".
- pCmdUI->SetCheck(m_bThickPen);
- }
- void CScribbleDoc::OnPenWidths()
- {
- CPenWidthsDlg dlg;
- // Initialize dialog data
- dlg.m_nThinWidth = m_nThinWidth;
- dlg.m_nThickWidth = m_nThickWidth;
- // Invoke the dialog box
- if (dlg.DoModal() == IDOK)
- {
- // retrieve the dialog data
- m_nThinWidth = dlg.m_nThinWidth;
- m_nThickWidth = dlg.m_nThickWidth;
- // Update the pen that is used by views when drawing new strokes,
- // to reflect the new pen width definitions for "thick" and "thin".
- ReplacePen();
- }
- }
- void CStroke::FinishStroke()
- {
- // Calculate the bounding rectangle. It's needed for smart
- // repainting.
- if (m_pointArray.GetSize()==0)
- {
- m_rectBounding.SetRectEmpty();
- return;
- }
- CPoint pt = m_pointArray[0];
- m_rectBounding = CRect(pt.x, pt.y, pt.x, pt.y);
- for (int i=1; i < m_pointArray.GetSize(); i++)
- {
- // If the point lies outside of the accumulated bounding
- // rectangle, then inflate the bounding rect to include it.
- pt = m_pointArray[i];
- m_rectBounding.left = min(m_rectBounding.left, pt.x);
- m_rectBounding.right = max(m_rectBounding.right, pt.x);
- m_rectBounding.top = max(m_rectBounding.top, pt.y);
- m_rectBounding.bottom = min(m_rectBounding.bottom, pt.y);
- }
- // Add the pen width to the bounding rectangle. This is necessary
- // to account for the width of the stroke when invalidating
- // the screen.
- m_rectBounding.InflateRect(CSize(m_nPenWidth, -(int)m_nPenWidth));
- return;
- }
- COleServerItem* CScribbleDoc::OnGetEmbeddedItem()
- {
- // OnGetEmbeddedItem is called by the framework to get the COleServerItem
- // that is associated with the document. It is only called when necessary.
- CScribbleItem* pItem = new CScribbleItem(this);
- ASSERT_VALID(pItem);
- return pItem;
- }
- void CScribbleDoc::OnSetItemRects(LPCRECT lpPosRect, LPCRECT lpClipRect)
- {
- // call base class to change the size of the window
- COleServerDoc::OnSetItemRects(lpPosRect, lpClipRect);
- // notify first view that scroll info should change
- POSITION pos = GetFirstViewPosition();
- CScribbleView* pView = (CScribbleView*)GetNextView(pos);
- pView->ResyncScrollSizes();
- }
- void CScribbleDoc::OnEditCopy()
- {
- CScribbleItem* pItem = GetEmbeddedItem();
- pItem->CopyToClipboard(TRUE);
- }