curveframe.cpp

模拟了现实中的示波器

// CurveFrame.cpp : implementation file
//

#include "stdafx.h"
#include "CurveFrame.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCurveFrame

CCurveFrame::CCurveFrame()
{
	m_rectOffset.left = 50;
	m_rectOffset.top = 20;
	m_rectOffset.right = 20;
	m_rectOffset.bottom = 40;

	m_clrBkGround = RGB(0, 0, 0);
	m_clrGridLine = RGB(26, 73, 20);
	m_clrGridBoldLine = RGB(55, 158, 44);
	m_clrGridXCoord = RGB(255, 0, 0);
	m_clrCurve[0] = RGB(255,255,255);
	m_clrCurve[1] = RGB(0,255,0);
	m_clrCurve[2] = RGB(0,255,255);
	
	for (int i=0; i<3; i++)
	{
		m_bChannelFlag[i] = FALSE;
		m_nWidth[i] = 1;
	}

	m_fVerScale = 1.0;
	m_nHorScale = 100;
}

CCurveFrame::~CCurveFrame()
{
}


BEGIN_MESSAGE_MAP(CCurveFrame, CStatic)
	//{{AFX_MSG_MAP(CCurveFrame)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
/*
函数介绍:	根据lpRect设置绘图区的新位置
输入参数:	LPCRECT lpRect
输出参数:	无
返回值  :	无
*/
/////////////////////////////////////////////////////////////////////////////
void CCurveFrame::SetCurvePos(LPCRECT lpRect)
{
	MoveWindow(lpRect);
}

/////////////////////////////////////////////////////////////////////////////
/*
函数介绍:	绘制整个图形显示区的波形，以及坐标轴，坐标文字
输入参数:	无
输出参数:	无
返回值  :	无
*/
/////////////////////////////////////////////////////////////////////////////
void CCurveFrame::DrawCurve(double data0[1024], int num0,
							double data1[1024], int num1,
							double data2[1024], int num2,
							double FreqencySample)
{
	CDC *pDC = GetDC();//设备上下文指针

	m_memDCClient.BitBlt(0,0,m_rectClientArea.Width(), m_rectClientArea.Height(), &m_memDC,m_rectOffset.left,m_rectOffset.top,SRCCOPY);

	if (m_bChannelFlag[0] == TRUE || m_bChannelFlag[1] == TRUE ||
		m_bChannelFlag[2] == TRUE)
	{
		for (int i=0; i<3; i++)
		{
			if(m_bChannelFlag[i])
			{
				if (i == 0)
					DrawCurveDetail(&m_memDCClient,&m_rectClientArea, m_clrCurve[i], m_nWidth[i],	data0, num0, FreqencySample);
				else if(i == 1)
					DrawCurveDetail(&m_memDCClient,&m_rectClientArea, m_clrCurve[i], m_nWidth[i],	data1, num1, FreqencySample);
				else
					DrawCurveDetail(&m_memDCClient,&m_rectClientArea, m_clrCurve[i], m_nWidth[i],	data2, num2, FreqencySample);
			}
		}
	}
	m_memDCCur.BitBlt(m_rectOffset.left,m_rectOffset.top,m_rectClientArea.Width(), m_rectClientArea.Height(), &m_memDCClient,0,0,SRCCOPY);

	pDC->BitBlt(0,0,m_rectBkArea.Width(), m_rectBkArea.Height(), &m_memDCCur,0,0,SRCCOPY);
	ReleaseDC(pDC);
}

/////////////////////////////////////////////////////////////////////////////
/*
函数介绍:	绘制图形显示区的，有立体感的背景，并填充波信显示区的背景
输入参数:	CDC *pDC,		
			LPCRECT lpRect	
输出参数:	无
返回值  :	无
*/
/////////////////////////////////////////////////////////////////////////////
void CCurveFrame::DrawBkGround(CDC *pDC, LPCRECT lpRect)
{
	CPen penTop[2];//顶边线
	CPen penLeft[9];//左边线
	CPen penRight[14];//右边线
	penTop[0].CreatePen(PS_SOLID, 1, RGB(208, 208, 208));
	penTop[1].CreatePen(PS_SOLID, 1, RGB(203, 203, 203));

	penLeft[0].CreatePen(PS_SOLID, 1, RGB(204, 204, 204));	
	penLeft[1].CreatePen(PS_SOLID, 1, RGB(208, 208, 208));	
	penLeft[2].CreatePen(PS_SOLID, 1, RGB(211, 211, 211));
	penLeft[3].CreatePen(PS_SOLID, 1, RGB(211, 211, 211));
	penLeft[4].CreatePen(PS_SOLID, 1, RGB(211, 211, 211));
	penLeft[5].CreatePen(PS_SOLID, 1, RGB(210, 210, 210));
	penLeft[6].CreatePen(PS_SOLID, 1, RGB(207, 207, 207));
	penLeft[7].CreatePen(PS_SOLID, 1, RGB(203, 203, 203));
	penLeft[8].CreatePen(PS_SOLID, 1, RGB(196, 196, 196));

	penRight[0].CreatePen(PS_SOLID, 1, RGB(64, 64, 64));
	penRight[1].CreatePen(PS_SOLID, 1, RGB(112, 112, 112));
	penRight[2].CreatePen(PS_SOLID, 1, RGB(130, 130, 130));
	penRight[3].CreatePen(PS_SOLID, 1, RGB(139, 139, 139));
	penRight[4].CreatePen(PS_SOLID, 1, RGB(147, 147, 147));
	penRight[5].CreatePen(PS_SOLID, 1, RGB(153, 153, 153));
	penRight[6].CreatePen(PS_SOLID, 1, RGB(157, 157, 157));
	penRight[7].CreatePen(PS_SOLID, 1, RGB(162, 162, 162));
	penRight[8].CreatePen(PS_SOLID, 1, RGB(166, 166, 166));
	penRight[9].CreatePen(PS_SOLID, 1, RGB(170, 170, 170));
	penRight[10].CreatePen(PS_SOLID, 1, RGB(174, 174, 174));
	penRight[11].CreatePen(PS_SOLID, 1, RGB(179, 179, 179));
	penRight[12].CreatePen(PS_SOLID, 1, RGB(184, 184, 184));
	penRight[13].CreatePen(PS_SOLID, 1, RGB(189, 189, 189));

	//绘制上面的两根线
	CPen *pOldPen = pDC->SelectObject(&penTop[0]);
	pDC->MoveTo(lpRect->left, lpRect->top);
	pDC->LineTo(lpRect->right-3,lpRect->top);
	pDC->SelectObject(&penTop[1]);
	pDC->MoveTo(lpRect->left+1, lpRect->top+1);
	pDC->LineTo(lpRect->right-8,lpRect->top+1);
	//绘制左边的9根线
	for (int i=0; i<9; i++)
	{
		pDC->SelectObject(&penLeft[i]);
		if (i==0)
		{
			pDC->MoveTo(lpRect->left+i, lpRect->top+1);
			pDC->LineTo(lpRect->left+i, lpRect->bottom);
		}
		else
		{
			pDC->MoveTo(lpRect->left+i, lpRect->top+2);
			pDC->LineTo(lpRect->left+i, lpRect->bottom);
		}
	}
	//绘制右边的14根线
	for (i=0; i<14; i++)
	{
		pDC->SelectObject(&penRight[i]);
		if(i < 3)
		{
			pDC->MoveTo(lpRect->right-i-1, lpRect->top);
			pDC->LineTo(lpRect->right-i-1, lpRect->bottom);
		}
		else if(i < 8)
		{
			pDC->MoveTo(lpRect->right-i-1, lpRect->top-1);
			pDC->LineTo(lpRect->right-i-1, lpRect->bottom);
		}
		else
		{
			pDC->MoveTo(lpRect->right-i-1, lpRect->top-2);
			pDC->LineTo(lpRect->right-i-1, lpRect->bottom);
		}
	}
	
	CPen penInbound;
	CBrush brushInbound;
	penInbound.CreateStockObject(NULL_PEN);
	brushInbound.CreateSolidBrush(RGB(191,191,191));
	//填充背景
	CBrush *pOldBrush = pDC->SelectObject(&brushInbound);
	pDC->SelectObject(&penInbound);
	pDC->Rectangle(lpRect->left+9, lpRect->top+2,
		lpRect->right-13, lpRect->bottom+1);

	pDC->SelectObject(pOldPen);
	pDC->SelectObject(pOldBrush);
}

/////////////////////////////////////////////////////////////////////////////
/*
函数介绍:	绘制曲线背景客户区,也就是绘制网格
输入参数:	CDC *pDC,		
			LPCRECT lpRect	
输出参数:	无
返回值  :	无
*/
/////////////////////////////////////////////////////////////////////////////
void CCurveFrame::DrawBkGrid(CDC *pDC, LPCRECT lpRect, 
							   COLORREF clrBkGround, COLORREF clrGridXCoord,
							   COLORREF clrGridLine, COLORREF clrGridBoldLine)
{
	//绘图区的尺寸临时变量
	CRect rectCur;
	rectCur = lpRect;

	CPen penBk;//绘图区背景画笔
	CBrush brushBk;//绘图区背景画刷
	CPen penXCorrd;//绘图区X轴线
	CPen penGridLine;//绘图区网格细线
	CPen penGridBoldLine;//绘图区网格粗线

	CPen penScale;//绘制坐标文字旁的坐标刻度线

	penBk.CreatePen(PS_SOLID, 1, m_clrBkGround);
	brushBk.CreateSolidBrush(clrBkGround);//画背景的颜色
	penXCorrd.CreatePen(PS_SOLID, 1, m_clrGridXCoord);
	penGridLine.CreatePen(PS_SOLID, 1, m_clrGridLine);
	penGridBoldLine.CreatePen(PS_SOLID, 1, m_clrGridBoldLine);
	penScale.CreateStockObject(BLACK_PEN);

	//用背景画刷填充背景
	CPen *pOldPen = pDC->SelectObject(&penBk);
	CBrush *pOldBrush = pDC->SelectObject(&brushBk);
	pDC->Rectangle(rectCur);
	
	//绘制网格线之前要设置映射模式,转换坐标,移动原点
	int oldMapMode = pDC->SetMapMode(MM_HIMETRIC);
	CPoint oldPtViewOrg = pDC->SetViewportOrg(rectCur.left, (rectCur.bottom+rectCur.top)/2);
	pDC->DPtoLP(&rectCur);
	
	//绘制刻度线
	CPoint ptFrom(0, 0);
	CPoint ptTo(rectCur.right, 0);

	pDC->SelectObject(&penXCorrd);
	pDC->MoveTo(ptFrom);
	pDC->LineTo(ptTo);//绘制X轴
	
	//绘制垂直坐标刻度，0刻度线
	pDC->SelectObject(&penScale);
	pDC->MoveTo(ptFrom.x - 50, ptFrom.y);
	pDC->LineTo(ptFrom.x - 200, ptFrom.y);
	
	int nIntervalHor = (rectCur.top)/25;
	for (int i=0; i<25; i++)
	{//绘制上半部分水平网格,横行为10大格,50小格
		if ((i+1)%5 == 0)
			pDC->SelectObject(&penGridBoldLine);
		else
			pDC->SelectObject(&penGridLine);
		ptFrom.Offset(0, nIntervalHor);
		ptTo.Offset(0, nIntervalHor);
		pDC->MoveTo(ptFrom); 
		pDC->LineTo(ptTo);

		//绘制垂直坐标刻度线
		if((i+1)%5 == 0)
		{
			pDC->SelectObject(&penScale);
			pDC->MoveTo(ptFrom.x - 50, ptFrom.y);
			pDC->LineTo(ptFrom.x - 200, ptFrom.y);
		}

	}
	ptFrom.x = 0;
	ptFrom.y = 0;
	ptTo.x = rectCur.right;
	ptTo.y = 0;
	for (i=0; i<25; i++)
	{//绘制下半部分水平网格
		if ((i+1)%5 == 0)
			pDC->SelectObject(&penGridBoldLine);
		else
			pDC->SelectObject(&penGridLine);
		ptFrom.Offset(0, -nIntervalHor);
		ptTo.Offset(0, -nIntervalHor);
		pDC->MoveTo(ptFrom); 
		pDC->LineTo(ptTo);

		//绘制垂直坐标刻度线
		if((i+1)%5 == 0)
		{
			if (i != 24)
			{
				pDC->SelectObject(&penScale);
				pDC->MoveTo(ptFrom.x - 50, ptFrom.y);
				pDC->LineTo(ptFrom.x - 200, ptFrom.y);
			}
			else
			{
				pDC->SelectObject(&penScale);
				pDC->MoveTo(ptFrom.x - 50, ptFrom.y);
				pDC->LineTo(ptFrom.x - 200, ptFrom.y);
				//绘制x轴的最左边一条坐标线
				pDC->MoveTo(ptFrom.x, ptFrom.y - 50);
				pDC->LineTo(ptFrom.x, ptFrom.y - 200);
			}
		}
	}

	ptFrom = rectCur.TopLeft();
	ptTo.x = rectCur.left;
	ptTo.y = rectCur.bottom;
	int nIntervalVer = (rectCur.right)/50;
	pDC->SelectObject(&penGridBoldLine);
	pDC->MoveTo(ptFrom.x+1, ptFrom.y); 
	pDC->LineTo(ptTo.x+1, ptTo.y);
	for (i=0; i<50; i++)
	{//绘制垂直部分网格,纵行为50小格,10大格
		if ((i+1)%5 == 0)
			pDC->SelectObject(&penGridBoldLine);
		else
			pDC->SelectObject(&penGridLine);
		ptFrom.Offset(nIntervalVer, 0);
		ptTo.Offset(nIntervalVer, 0);
		pDC->MoveTo(ptFrom);