crossdisplay.cpp

这是用Visual C++编写的步进电机驱动控制程序

// Copyright (C) 1991 - 1999 Rational Software Corporation

#include "stdafx.h"
#include "CrossDisplay.h"


/////////////////////////////////////////////////////////////////////

void CCrossDisplay::DrawX_Axl(CDC *pDC)
{
	// TODO: Add your specialized code here.
 

 RECT rc;
 GetClientRect(&rc);

 int ShortUnitLen = (m_ShortUnitScale * y_length)/rc.bottom;
 int LongUnitLen = (m_LongUnitScale * y_length)/rc.bottom;
 TRACE("short unit lengh is %d,long unit length is %d\n",ShortUnitLen,LongUnitLen);

 SetOrgAndExt(pDC);
 CPen   pen (PS_SOLID, 0, RGB(0, 0, 0)); // red pen
 CPen*   pOldPen = pDC->SelectObject(&pen);

 pDC->MoveTo(x_AxlBegin, 0);
 pDC->LineTo(x_AxlEnd,0);

	
 int xNumRectLogLen = NumRectLenWidth * x_length/ rc.right;
 int yNumRectLogLen = NumRectLenLength * y_length/ rc.bottom;

 for(int i = x_AxlBegin; i <= x_AxlEnd; i = i  + x_unit)
 {
    pDC->MoveTo(i,0);
	if( i%(x_unit*10) == 0)
	{
		 pDC->LineTo(i,LongUnitLen);
		 CRect NumRect;
		 if(i == 0)
		   NumRect.SetRect(i - 2 * xNumRectLogLen, 0, i + xNumRectLogLen, -yNumRectLogLen);
		 else
		   NumRect.SetRect(i - 2 * xNumRectLogLen, 0, i + 2 * xNumRectLogLen, -yNumRectLogLen);
		 CString numtxt;
		 numtxt.Format("%d",i/x_scale);
		 TRACE("the number along x axl is %s\n",numtxt);
		 pDC->DrawText(numtxt, &NumRect, DT_CENTER | DT_WORDBREAK);
	}
	else
	   pDC->LineTo(i,ShortUnitLen);
 }

 pDC->SelectObject(pOldPen);
}

////////////////////////////////////////////////////////////////// ///
void CCrossDisplay::DrawY_Axl(CDC *pDC)
{
	// TODO: Add your specialized code here.

 
 
 SetOrgAndExt(pDC);
 CPen   pen (PS_SOLID, 0, RGB(0, 0, 0)); // red pen
 CPen*   pOldPen = pDC->SelectObject(&pen);

	 
 pDC->MoveTo(0, y_AxlBegin);
 pDC->LineTo(0,y_AxlEnd);

 RECT rc;
 GetClientRect(&rc);

 int ShortUnitLen = (m_ShortUnitScale * x_length)/rc.right;
 int LongUnitLen = (m_LongUnitScale * x_length)/rc.right;
 TRACE("short unit lengh is %d,long unit length is %d\n",ShortUnitLen,LongUnitLen);

 int xNumRectLogLen = NumRectLenWidth * x_length/ rc.right;
 int yNumRectLogLen = NumRectLenLength * y_length/ rc.bottom;


 for(int i = y_AxlBegin; i <= y_AxlEnd; i = i  + y_unit)
 {
    pDC->MoveTo(0,i);
	if(i%(y_unit * 10) == 0)
	{
		pDC->LineTo(LongUnitLen,i);
		if(i != 0)
		{
			CRect NumRect(- 3 * xNumRectLogLen, i + yNumRectLogLen/2, xNumRectLogLen, i - 4 * yNumRectLogLen);
			CString numtxt;
			numtxt.Format("%d",i/y_scale);
			pDC->DrawText(numtxt, &NumRect, DT_CENTER | DT_WORDBREAK);
        }
	}
	else
		pDC->LineTo(ShortUnitLen,i);

 }
}


BEGIN_MESSAGE_MAP(CCrossDisplay, CDisplay)
	//{{AFX_MSG_MAP(CCrossDisplay)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()



/////////////////////////////////////////////////////////////////////
void CCrossDisplay::SetXUnit(int NPixes)
{
	x_unit = NPixes;
	// TODO: Add your specialized code here.
}

/////////////////////////////////////////////////////////////////////
void CCrossDisplay::SetYUnit(int NPixes)
{
	// TODO: Add your specialized code here.
	y_unit = NPixes;
}



/////////////////////////////////////////////////////////////////////

CCrossDisplay::CCrossDisplay() : x_unit(5), y_unit(5), x_length(500), y_length(100)
{
	m_xAxl_Txt = "位移mm";
	m_yAxl_Txt = "时间(s)";

	cen_pos = LEFT_BOTTOM;

	x_scale = 100;   //等于x_length/表达的长度
	y_scale = 100;

	m_ShortUnitScale = 7;
    m_LongUnitScale = 15;

    NumRectLenWidth = 15;    //坐标数值的设备单位大小
	NumRectLenLength = 25;
/////////2003.12.01
	x_AxlBegin = 0;
	x_AxlEnd = x_length;
	y_AxlBegin = 0;
	y_AxlEnd = y_length;
////
	// ToDo: Add your specialized code here and/or call the base class
}

/////////////////////////////////////////////////////////////////////
CCrossDisplay::~CCrossDisplay()
{
	// ToDo: Add your specialized code here and/or call the base class
}



/////////////////////////////////////////////////////////////////////
void CCrossDisplay::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	CDisplay::OnPaint();
	DrawAxlText(&dc);
	DrawX_Axl(&dc);
	DrawY_Axl(&dc);
	DrawData(&dc);
	
	
	// TODO: Add your message handler code here
	
	// Do not call CDisplay::OnPaint() for painting messages
}

/////////////////////////////////////////////////////////////////////
void CCrossDisplay::SetOrgAndExt(CDC* pDC)
{
	// ToDo: Add your specialized code here or after the call to base class
    RECT rc;
    GetClientRect(&rc);

	TRACE("display hight is %d,width is %d\n",rc.bottom,rc.right);

	pDC->SetMapMode(MM_ANISOTROPIC);
	if(cen_pos == LEFT_BOTTOM)
	{
		pDC->SetWindowOrg(0, 0);
		pDC->SetViewportOrg(28, rc.bottom-20);//22,20//20031201,15,15

 		pDC->SetWindowExt(x_length, y_length);
		pDC->SetViewportExt(rc.right-42, -(rc.bottom-42));//35,35 //20031201,25,25

		x_AxlBegin = 0;
		x_AxlEnd = x_length;

        y_AxlBegin =0;
		y_AxlEnd = y_length;
	}
	else if(cen_pos == CENTER)
	{
       pDC->SetWindowOrg(0, 0);
	   pDC->SetViewportOrg(rc.right/2,rc.bottom/2);

	   pDC->SetWindowExt(x_length, y_length);
	   pDC->SetViewportExt((rc.bottom-20)/2, -(rc.bottom-20)/2);

	   	x_AxlBegin = -x_length;
		x_AxlEnd = x_length;

        y_AxlBegin = -y_length;
		y_AxlEnd = y_length;
	}

    pDC->SetBkMode(TRANSPARENT);
	
	CDisplay::SetOrgAndExt(pDC);
}



/////////////////////////////////////////////////////////////////////
void CCrossDisplay::DrawAxlText(CDC *pDC)
{
  	pDC->SetMapMode(MM_TEXT);
	CRect rc;
	GetClientRect(rc);
	pDC->SetBkMode(TRANSPARENT);
	
	CRect TxtRect;
	if(cen_pos == CENTER)
	  TxtRect.SetRect(rc.Width()/2,20,rc.Width()/2 + 70,40);////20031201
	else if(cen_pos == LEFT_BOTTOM)
      TxtRect.SetRect(35,10,100,50);

	pDC->DrawText(m_xAxl_Txt, &TxtRect, DT_CENTER | DT_WORDBREAK);
    
	if(cen_pos == CENTER)
		TxtRect.SetRect(rc.Width() - 100, rc.Height()/2 - 20,
		               rc.Width() - 5 , rc.Height()/2);
	else if(cen_pos == LEFT_BOTTOM)
	      TxtRect.SetRect(rc.Width() - 50, rc.Height() - 50,////20031201
		               rc.Width() - 5 , rc.Height() - 30);
	
	pDC->DrawText(m_yAxl_Txt, &TxtRect, DT_CENTER | DT_WORDBREAK);

    
	DRAWITEMLIST::iterator it_list;
	int txt_hor = 10;
    for (it_list = m_Itemlist.begin(); it_list != m_Itemlist.end(); ++it_list)
	{
	  if(it_list->bRedraw == FALSE || it_list->DataName == "")
		  continue;
      CPen   pen (PS_SOLID, 3, it_list->DrawClr); // red pen
      CPen*   pOldPen = pDC->SelectObject(&pen);
	  pDC->MoveTo(rc.Width()/2 + 80,txt_hor);
      pDC->LineTo(rc.Width()/2 + 120,txt_hor);
	  
	  TxtRect.SetRect(rc.Width()/2 + 125,txt_hor - 10,rc.Width(),txt_hor + 20);
      pDC->DrawText(it_list->DataName, &TxtRect, DT_LEFT | DT_WORDBREAK);
      txt_hor = txt_hor + 20;
	  pDC->SelectObject(pOldPen);
	}
}

/////////////////////////////////////////////////////////////////////
void CCrossDisplay::AddDrawItem(DRAWITEM &item)
{
	item.bRedraw = TRUE;
	m_Itemlist.push_back(item);
	Invalidate();
}

/////////////////////////////////////////////////////////////////////
void CCrossDisplay::DrawData(CDC* pDC)
{
	// ToDo: Add your specialized code here or after the call to base class
	
	SetOrgAndExt(pDC);

	DRAWITEMLIST::iterator it_list;

    for (it_list = m_Itemlist.begin(); it_list != m_Itemlist.end(); ++it_list)
	{
	  if(it_list->bRedraw == FALSE)
		  continue;
      CPen   pen (PS_SOLID, 0, it_list->DrawClr); // red pen //it_list->nPen
      CPen*   pOldPen = pDC->SelectObject(&pen);
	  if(it_list->dtype == YDATA)
	  {
		  for(int j = 0, data_index = 0; data_index < it_list->nData;
		  j = j + x_length/it_list->nData,data_index++)
		  {
			  if(j == 0)
				  pDC->MoveTo(j,(int)(it_list->pData[data_index].y));
			  else
				  pDC->LineTo(j,(int)(it_list->pData[data_index].y));
		  }
	  }
	  else
	  {
		  for(int data_index = 0; data_index < it_list->nData;data_index++)
		  {
			  if(data_index == 0)
				  pDC->MoveTo(it_list->pData[data_index].x, it_list->pData[data_index].y);
			  else
				  pDC->LineTo(it_list->pData[data_index].x, it_list->pData[data_index].y);
		  }
	  }
	  pDC->SelectObject(pOldPen);
	}


	CDisplay::DrawData(pDC);
}



/////////////////////////////////////////////////////////////////////
void CCrossDisplay::setx_Axl_Txt(CString& value)
{
	m_xAxl_Txt = value;
	return;
}

/////////////////////////////////////////////////////////////////////
void CCrossDisplay::sety_Axl_Txt(CString& value)
{
	m_yAxl_Txt = value;
	return;
}



/////////////////////////////////////////////////////////////////////
void CCrossDisplay::RemoveAllItem()
{
	//DRAWITEMLIST::iterator it;
	//while((it = m_Itemlist.front()) ! = m_Itemlist.end())
	 m_Itemlist.erase(m_Itemlist.begin(),m_Itemlist.end());
	// TODO: Add your specialized code here.
}