animateline1view.cpp

电脑编程技巧与维护200109期杂志源代码

// AnimateLine1View.cpp : implementation of the CAnimateLine1View class
//

#include "stdafx.h"
#include "AnimateLine1.h"

#include "AnimateLine1Doc.h"
#include "AnimateLine1View.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAnimateLine1View

IMPLEMENT_DYNCREATE(CAnimateLine1View, CFormView)

BEGIN_MESSAGE_MAP(CAnimateLine1View, CFormView)
	//{{AFX_MSG_MAP(CAnimateLine1View)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAnimateLine1View construction/destruction

CAnimateLine1View::CAnimateLine1View()
	: CFormView(CAnimateLine1View::IDD)
{
	//{{AFX_DATA_INIT(CAnimateLine1View)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CAnimateLine1View::~CAnimateLine1View()
{
}

void CAnimateLine1View::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAnimateLine1View)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BOOL CAnimateLine1View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFormView::PreCreateWindow(cs);
}

void CAnimateLine1View::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();
	GetParentFrame()->RecalcLayout();
	ResizeParentToFit();

/////////////////////我的代码///////////////////
	//以下代码意味着：曲线每隔200毫秒前进5单元水平距离
    offsetx=5;
    SetTimer(1,200,NULL);
/////////////////////我的代码///////////////////

}

/////////////////////////////////////////////////////////////////////////////
// CAnimateLine1View printing

BOOL CAnimateLine1View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CAnimateLine1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CAnimateLine1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

void CAnimateLine1View::OnPrint(CDC* pDC, CPrintInfo* /*pInfo*/)
{
	// TODO: add customized printing code here
}

/////////////////////////////////////////////////////////////////////////////
// CAnimateLine1View diagnostics

#ifdef _DEBUG
void CAnimateLine1View::AssertValid() const
{
	CFormView::AssertValid();
}

void CAnimateLine1View::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

CAnimateLine1Doc* CAnimateLine1View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CAnimateLine1Doc)));
	return (CAnimateLine1Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CAnimateLine1View message handlers

void CAnimateLine1View::OnDraw(CDC* pDC) 
{
/////////////////////我的代码///////////////////
    //在客户屏幕上建立一个曲线绘制区域，区域大小为200×100，背景为方格黑背景
	CRect rect(200,100,401,200);
	CBrush bkbrush(HS_CROSS,RGB(0,128,0));
	pDC->SetBkColor(RGB(0,0,0));
    pDC->FillRect(rect,&bkbrush);
    //创建一个与设备描述表pDC兼容的位图，尺寸为195×100大小，用来保存需要移动的曲线图
	if(m_dc.GetSafeHdc()==NULL)
	{
	CRect rect1(0,0,195,100);
    m_dc.CreateCompatibleDC(pDC);
	m_bmp.CreateCompatibleBitmap(pDC,195,100);
	m_dc.SelectObject(m_bmp);
	m_dc.SetBkColor(RGB(0,0,0));
	m_dc.FillRect(rect1,&bkbrush);
	} 
/////////////////////我的代码///////////////////
}

void CAnimateLine1View::OnTimer(UINT nIDEvent) 
{
/////////////////////我的代码///////////////////   
	CClientDC dc(this);
    static	int x=200;
    static int y=200;
	CPen pen1(PS_SOLID,0,RGB(255,0,8));
	CPen *oldpen1=NULL;
    oldpen1=dc.SelectObject(&pen1);
	//以下代码用来实现动态曲线
	x=x+offsetx;
    //如果曲线没有超出屏幕图片框右边界线，直接在屏幕图片框区域内绘制曲线，不用平移
    if(x<=400)
	{
	dc.MoveTo(x-offsetx,y);
    y=200-rand()%90;//模拟数据采样值
	dc.LineTo(x,y);
	}
    //如果曲线超出屏幕图片框右边界线，则需要平移曲线图
    else
	{
	CRect rect(200,100,401,200);
	CBrush bkbrush(HS_CROSS,RGB(0,128,0));
    m_dc.BitBlt(0,0,195,100,&dc,205,100,SRCCOPY);//保存需要移动的曲线图象
    //用背景图重绘屏幕图片框，消隐其中的所有曲线
	dc.SetBkColor(RGB(0,0,0));
    dc.FillRect(rect,&bkbrush);
	//将保存的曲线图向左平移5单位
    dc.BitBlt(200,100,195,100,&m_dc,0,0,SRCCOPY);
    //用新数据继续绘制曲线曲线
	dc.MoveTo(395,y);
    y=200-rand()%90;//模拟数据采样值
	dc.LineTo(400,y);
}
	dc.SelectObject(oldpen1);
/////////////////////我的代码///////////////////
	CFormView::OnTimer(nIDEvent);
}