SCRIBVW.CPP
资源名称:MSDN_VC98.zip [点击查看]
上传用户:bangxh
上传日期:2007-01-31
资源大小:42235k
文件大小:5k
源码类别:
Windows编程
开发平台:
Visual C++
- // ScribVw.cpp : implementation of the CScribbleView 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 "ScribVw.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView
- IMPLEMENT_DYNCREATE(CScribbleView, CView)
- BEGIN_MESSAGE_MAP(CScribbleView, CView)
- //{{AFX_MSG_MAP(CScribbleView)
- ON_WM_LBUTTONDOWN()
- ON_WM_LBUTTONUP()
- ON_WM_MOUSEMOVE()
- //}}AFX_MSG_MAP
- // Standard printing commands
- ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
- ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
- ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView construction/destruction
- CScribbleView::CScribbleView()
- {
- // TODO: add construction code here
- }
- CScribbleView::~CScribbleView()
- {
- }
- BOOL CScribbleView::PreCreateWindow(CREATESTRUCT& cs)
- {
- // TODO: Modify the Window class or styles here by modifying
- // the CREATESTRUCT cs
- return CView::PreCreateWindow(cs);
- }
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView drawing
- void CScribbleView::OnDraw(CDC* pDC)
- {
- CScribbleDoc* pDoc = GetDocument();
- ASSERT_VALID(pDoc);
- // The view delegates the drawing of individual strokes to
- // CStroke::DrawStroke().
- CTypedPtrList<CObList,CStroke*>& strokeList = pDoc->m_strokeList;
- POSITION pos = strokeList.GetHeadPosition();
- while (pos != NULL)
- {
- CStroke* pStroke = strokeList.GetNext(pos);
- pStroke->DrawStroke(pDC);
- }
- }
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView printing
- BOOL CScribbleView::OnPreparePrinting(CPrintInfo* pInfo)
- {
- // default preparation
- return DoPreparePrinting(pInfo);
- }
- void CScribbleView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
- {
- // TODO: add extra initialization before printing
- }
- void CScribbleView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
- {
- // TODO: add cleanup after printing
- }
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView diagnostics
- #ifdef _DEBUG
- void CScribbleView::AssertValid() const
- {
- CView::AssertValid();
- }
- void CScribbleView::Dump(CDumpContext& dc) const
- {
- CView::Dump(dc);
- }
- CScribbleDoc* CScribbleView::GetDocument() // non-debug version is inline
- {
- ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CScribbleDoc)));
- return (CScribbleDoc*)m_pDocument;
- }
- #endif //_DEBUG
- /////////////////////////////////////////////////////////////////////////////
- // CScribbleView message handlers
- void CScribbleView::OnLButtonDown(UINT, CPoint point)
- {
- // Pressing the mouse button in the view window starts a new stroke
- m_pStrokeCur = GetDocument()->NewStroke();
- // Add first point to the new stroke
- m_pStrokeCur->m_pointArray.Add(point);
- SetCapture(); // Capture the mouse until button up.
- m_ptPrev = point; // Serves as the MoveTo() anchor point for the
- // LineTo() the next point, as the user drags the
- // mouse.
- return;
- }
- void CScribbleView::OnLButtonUp(UINT, CPoint point)
- {
- // Mouse button up is interesting in the Scribble application
- // only if the user is currently drawing a new stroke by dragging
- // the captured mouse.
- if (GetCapture() != this)
- return; // If this window (view) didn't capture the mouse,
- // then the user isn't drawing in this window.
- CScribbleDoc* pDoc = GetDocument();
- CClientDC dc(this);
- CPen* pOldPen = dc.SelectObject(pDoc->GetCurrentPen());
- dc.MoveTo(m_ptPrev);
- dc.LineTo(point);
- dc.SelectObject(pOldPen);
- m_pStrokeCur->m_pointArray.Add(point);
- ReleaseCapture(); // Release the mouse capture established at
- // the beginning of the mouse drag.
- return;
- }
- void CScribbleView::OnMouseMove(UINT, CPoint point)
- {
- // Mouse movement is interesting in the Scribble application
- // only if the user is currently drawing a new stroke by dragging
- // the captured mouse.
- if (GetCapture() != this)
- return; // If this window (view) didn't capture the mouse,
- // then the user isn't drawing in this window.
- CClientDC dc(this);
- m_pStrokeCur->m_pointArray.Add(point);
- // Draw a line from the previous detected point in the mouse
- // drag to the current point.
- CPen* pOldPen = dc.SelectObject(GetDocument()->GetCurrentPen());
- dc.MoveTo(m_ptPrev);
- dc.LineTo(point);
- dc.SelectObject(pOldPen);
- m_ptPrev = point;
- return;
- }