myview.cpp

VC面向对象的学习教程

// MyView.cpp : implementation of the CMyView class
//

#include "stdafx.h"
#include "My.h"

#include "MyDoc.h"
#include "MyView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyView

IMPLEMENT_DYNCREATE(CMyView, CView)

BEGIN_MESSAGE_MAP(CMyView, CView)
	//{{AFX_MSG_MAP(CMyView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMyView construction/destruction

CMyView::CMyView()
{
	// TODO: add construction code here

}

CMyView::~CMyView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMyView drawing

void CMyView::OnDraw(CDC* pDC)
{
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here

	const int xOrg = 100;
	const int yOrg = 350;
	const int xMax = 700;
	const int yMin = 20;
	const int xMin = xOrg;
	const int yMax = yOrg;

	//找出最大和最小
	double dbXMin = pDoc->m_dbXdata[0];
	double dbXMax = pDoc->m_dbXdata[0];
	double dbYMin1 = pDoc->m_dbYdata1[0];
	double dbYMax1 = pDoc->m_dbYdata1[0];
	double dbYMin2 = pDoc->m_dbYdata2[0];
	double dbYMax2 = pDoc->m_dbYdata2[0];

	for(int i=1; i<pDoc->iPt; i++)
	{
		pDoc->m_dbXdata[i]<dbXMin?dbXMin=pDoc->m_dbXdata[i]:
				pDoc->m_dbXdata[i]>dbXMax?dbXMax=pDoc->m_dbXdata[i]:dbXMax;
		pDoc->m_dbYdata1[i]<dbYMin1?dbYMin1=pDoc->m_dbYdata1[i]:
				pDoc->m_dbYdata1[i]>dbYMax1?dbYMax1=pDoc->m_dbYdata1[i]:dbYMax1;
		pDoc->m_dbYdata2[i]<dbYMin2?dbYMin2=pDoc->m_dbYdata2[i]:
				pDoc->m_dbYdata2[i]>dbYMax2?dbYMax2=pDoc->m_dbYdata2[i]:dbYMax2;

	}

	double dbYMax = dbYMax1 > dbYMax2 ? dbYMax1 : dbYMax2;
	double dbYMin = dbYMin1 < dbYMin2 ? dbYMin1 : dbYMin2;

	//调整最大最小值
	dbXMax = dbXMax + (dbXMax-dbXMin)/pDoc->iPt;
	dbXMin = dbXMin - (dbXMax-dbXMin)/pDoc->iPt;
	dbYMax = dbYMax + (dbYMax-dbYMin)/pDoc->iPt;
	dbYMin = dbYMin - (dbYMax-dbYMin)/pDoc->iPt;

	//换算比率
	double dbXRatio = (xMax-xOrg)/(dbXMax-dbXMin);
	double dbYRatio = (yOrg-yMin)/(dbYMax-dbYMin);

	//画第一条折线
	CPen penNewPen(PS_SOLID, 1, RGB(0, 0, 255));
	CPen* ppenOldPen=pDC->SelectObject(&penNewPen);

	CBrush brushNewBrush(RGB(0,0,255));
	CBrush* pbrushOldBrush=pDC->SelectObject(&brushNewBrush);

	int x=(int) (dbXRatio * (pDoc->m_dbXdata[0]-dbXMin) + xOrg);
	int y=(int) (yOrg - dbYRatio * (pDoc->m_dbYdata1[0]-dbYMin));
	pDC->MoveTo(x,y);
	
	CRect rectSymbol(x-3, y-3, x+3, y+3);
	pDC->Ellipse(rectSymbol);

	for(i=1; i<pDoc->iPt; i++)
	{
		x = (int) (dbXRatio * (pDoc->m_dbXdata[i]-dbXMin) + xOrg);
		y = (int) (yOrg - dbYRatio * (pDoc->m_dbYdata1[i]-dbYMin));
		rectSymbol.left = x - 3;
		rectSymbol.top = y - 3;
		rectSymbol.right = x + 3;
		rectSymbol.bottom = y + 3;
		pDC->Ellipse(rectSymbol);
		pDC->LineTo(x,y);
	}

	//画第二条折线
	penNewPen.DeleteObject( );
	penNewPen.CreatePen(PS_SOLID, 1, RGB(255, 0, 0));
	pDC->SelectObject(&penNewPen);

	brushNewBrush.DeleteObject();
	brushNewBrush.CreateSolidBrush(RGB(255,0,0));
	//pDC->SelectObject(&brushNewBrush);

	x=(int) (dbXRatio * (pDoc->m_dbXdata[0]-dbXMin) + xOrg);
	y=(int) (yOrg - dbYRatio * (pDoc->m_dbYdata2[0]-dbYMin));
	pDC->MoveTo(x,y);
	
	rectSymbol.left = x - 3;
	rectSymbol.top = y - 3;
	rectSymbol.right = x + 3;
	rectSymbol.bottom = y + 3;
	pDC->FillRect(rectSymbol, &brushNewBrush);

	for(i=1; i<pDoc->iPt; i++)
	{
		x = (int) (dbXRatio * (pDoc->m_dbXdata[i]-dbXMin) + xOrg);
		y = (int) (yOrg - dbYRatio * (pDoc->m_dbYdata2[i]-dbYMin));
		rectSymbol.left = x - 3;
		rectSymbol.top = y - 3;
		rectSymbol.right = x + 3;
		rectSymbol.bottom = y + 3;
		pDC->FillRect(rectSymbol, &brushNewBrush);

		pDC->LineTo(x,y);
	}

	//画轴
	pDC->SelectObject(ppenOldPen);  //恢复
	pDC->SelectObject(pbrushOldBrush);

	pDC->MoveTo(xOrg,yOrg);
	pDC->LineTo(xMax,yOrg);
	pDC->MoveTo(xOrg,yOrg);
	pDC->LineTo(xOrg,yMin);

	//画刻度
	const iNumScal = 8;
	double dbXInc = (dbXMax - dbXMin)/iNumScal;
	
	y = yOrg;
	for(i = 0; i<=iNumScal; ++i)
	{
		x = (int) (dbXRatio * i * dbXInc + xOrg);
		pDC->MoveTo(x, y);
		pDC->LineTo(x, y+8);
		CString strBufOut;
		strBufOut.Format("%6.2f", (dbXMin + i * dbXInc));
		pDC->TextOut(x - 20 , y + 15, strBufOut);
	}
	
	double dbYInc = (dbYMax - dbYMin)/iNumScal;
	x = xOrg;
	for(i = 0; i<=iNumScal; ++i)
	{
		y = (int) (yOrg - dbYRatio * dbYInc * i);
		pDC->MoveTo(x, y);
		pDC->LineTo(x - 8, y);
		CString strBufOut;
		strBufOut.Format("%6.2f", (dbYMin + i * dbYInc));
		pDC->TextOut(x - 55 , y - 8, strBufOut);
	}

	//写轴标题
	CFont fontNewFont;
	fontNewFont.CreateFont(15,0,0,0,0,FALSE,FALSE,0,
							ANSI_CHARSET,OUT_DEFAULT_PRECIS,
							CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,
							DEFAULT_PITCH|FF_MODERN,
							"Arial Bold");

	CFont* pfontOldFont = pDC->SelectObject(&fontNewFont);

	x = (xMax-xOrg)/3 * 2;
	y = yOrg + 40;
	pDC->TextOut(x, y, "Force");

	fontNewFont.DeleteObject();
	fontNewFont.CreateFont(15,0,900,900,0,FALSE,FALSE,0,
							ANSI_CHARSET,OUT_DEFAULT_PRECIS,
							CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,
							DEFAULT_PITCH|FF_MODERN,
							"Arial Bold");
	pDC->SelectObject(&fontNewFont);
	x = xOrg - 80;
	y = (yOrg - yMin)/2;
	pDC->TextOut(x, y, "Displacement");

	pDC->SelectObject(pfontOldFont);
}

/////////////////////////////////////////////////////////////////////////////
// CMyView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyView diagnostics

#ifdef _DEBUG
void CMyView::AssertValid() const
{
	CView::AssertValid();
}

void CMyView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CMyView message handlers