trendgraphview.cpp

此文件为VC++开发环境下的OPC client trend 源代码

/////////////////////////////////////////////////////////////////////////////
//
//  OPC Trend VC++ Client:	TrendGraphView.CPP
//							(Source File)
//
/////////////////////////////////////////////////////////////////////////////
//
//          Author: Raphael Imhof
//    Initial Date: 11/04/98
//       $Workfile: TrendGraphView.cpp $
//       $Revision: 1 $
//           $Date: 7/27/99 5:24p $
//   Target System: Microsoft Windows NT 4.0
//     Environment: Visual C++ 5.0 / OPC DataAccess 1.0 / 2.0
//         Remarks: 
//
/////////////////////////////////////////////////////////////////////////////
//
//     Description: implements the graphical representation of the trend
//					
//
/////////////////////////////////////////////////////////////////////////////
//
//  History of Changes     (Please remove very old comments and blank lines!)
//            $Log: /IDK/OPCServer/clients/VC++/Trend/TrendGraphView.cpp $
// 
// 1     7/27/99 5:24p Imhof
// 
// 1     7/27/99 5:20p Imhof
// 
// 8     2/11/99 1:37p Imhof
// Supplied a license key for the dynamic mschart creation.
// 
// 7     1/15/99 7:04p Imhof
// Updated legal notice.
// 
// 6     1/15/99 2:52p Betrisey
// Stop processing the trend data after the first invalid sample
// 
// 5     12/15/98 10:30a Imhof
// Modifications for OPC 2.0
// 
// 4     11/06/98 5:53p Imhof
// Added header, comment and made some small code changes.
// 
// 
//  $Nokeywords:$ (To avoid useless search while checking in.)
/////////////////////////////////////////////////////////////////////////////
//  Copyright (C) 1998, Siemens Building Technologies, Inc. Landis Division
//
// SIEMENS BUILDING TECHNOLOGIES, INC. IS PROVIDING THE FOLLOWING
// EXAMPLES OF CODE AS SAMPLE ONLY.
//
// SIEMENS BUILDING TECHNOLOGIES, INC.  MAKES NO REPRESENTATIONS
// OR WARRANTIES OF ANY KIND  WITH RESPECT TO THE VALIDTY OF THE 
// CODES   OR   DESIRED   RESULTS   AND   DISCLAIMS   ALL   SUCH 
// REPRESENTATIONS   AND   WARRANTIES,  INCLUDING  FOR  EXAMPLE, 
// WARRANTIES  OF  MERCHANTABILITY  AND FITNESS FOR A PARTICULAR 
// PURPOSE.    SIEMENS  BUILIDNG  TECHNOLOGIES,  INC.  DOES  NOT 
// REPRESENT  OR  WARRANT  THAT  THE  FOLLOWING CODE SAMPLES ARE 
// ACCURATE, VALID, COMPLETE OR CURRENT.
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Trend.h"
#include "TrendDoc.h"
#include "TrendGraphView.h"
#include "vctitle.h" //ms chart title

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

/////////////////////////////////////////////////////////////////////////////
// CTrendGraphView

IMPLEMENT_DYNCREATE(CTrendGraphView, CView)

CTrendGraphView::CTrendGraphView()
{
}

CTrendGraphView::~CTrendGraphView()
{
}


BEGIN_MESSAGE_MAP(CTrendGraphView, CView)
	//{{AFX_MSG_MAP(CTrendGraphView)
	ON_WM_SIZE()
	ON_WM_MOUSEWHEEL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTrendGraphView drawing

void CTrendGraphView::OnDraw(CDC* pDC)
{
	CDocument* pDoc = GetDocument();
	// TODO: add draw code here
}

/////////////////////////////////////////////////////////////////////////////
// CTrendGraphView diagnostics

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

void CTrendGraphView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CTrendGraphView message handlers

void CTrendGraphView::OnInitialUpdate() 
{	
	// TODO: Add your specialized code here and/or call the base class
	CRect ViewClientRect;
	GetClientRect(&ViewClientRect);


	/*
		license key for mschart.ocx
		7C35CA30-D112-11cf-8E72-00A0C90F26F8

		Note: if a Microsoft distributed ocx is dynamically
		created it needs a license key (except if the program
		runs on a computer with the corresponding dev studio.
		If such a ocx is used in a dialog the resource editor 
		writes the key into the *.rc file for you.
	*/
	WCHAR pwchLicenseKey[] =
	{
		0x0037,	0x0043,	0x0033,	0x0035,	0x0043,	0x0041,	
		0x0033,	0x0030,	0x002D,	0x0044,	0x0031,	0x0031,	
		0x0032,	0x002D,	0x0031,	0x0031,	0x0063,	0x0066,	
		0x002D,	0x0038,	0x0045,	0x0037,	0x0032,	0x002D,	
		0x0030,	0x0030,	0x0041,	0x0030,	0x0043,	0x0039,	
		0x0030,	0x0046,	0x0032,	0x0036,	0x0046,	0x0038
	};

	BSTR bstrLicense = ::SysAllocStringLen(pwchLicenseKey,
       sizeof(pwchLicenseKey)/sizeof(WCHAR));

	if(m_Chart.Create(_T("graph"), WS_VISIBLE, ViewClientRect, 
		this, ID_GRAPH, NULL, FALSE, bstrLicense))
	{
		//1.) size missed => we do it here
		m_Chart.MoveWindow(ViewClientRect,TRUE);
		m_Chart.SetFocus();	
	}
	else
	{
		TRACE("CMSChart::Create() failed\n");
	}

	::SysFreeString(bstrLicense);

	CView::OnInitialUpdate();
}

void CTrendGraphView::OnSize(UINT nType, int cx, int cy) 
{
	CView::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	// fit the chart to CTrendGraphView size
	if (m_Chart.m_hWnd != NULL) //is created ?
	{
		CRect ViewClientRect;
		GetClientRect(&ViewClientRect);
		m_Chart.MoveWindow(ViewClientRect,TRUE);
		m_Chart.SetFocus();		
	}
	
}

void CTrendGraphView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	// TODO: Add your specialized code here and/or call the base class
	USES_CONVERSION;

	m_Chart.SetChartType(3); //VtChChartType2dLine
	
	m_Chart.SetColumnCount(1);

	m_Chart.EnableWindow(FALSE);  //not allowing to select

	CArray<OPCITEMSTATE, OPCITEMSTATE>* pTrenData;
	unsigned int nTrendDataValues = 0;

	CItem* pItem = ((CTrendDoc*)GetDocument())->GetItem();
	nTrendDataValues = pItem->GetTrendData(&pTrenData);

//	m_Chart.SetRowCount(nTrendDataValues);
	m_Chart.SetRowCount(1);

	m_Chart.SetColumn(1);

	int nValidValues = 0;

	for (unsigned int i = 0; i < nTrendDataValues; i++)
	{
//		m_Chart.SetRow(i+1);

		/* defined in trend.cpp	of BCSAcs
		#define SAMPLE_NOT_VALID			0x8000
		#define SAMPLE_NOT_AVAILABLE		0x4000
		#define SAMPLE_IN_ALARM				0x2000
		*/
		WORD	wQuality = (*pTrenData)[i].wQuality;
		BOOL bDataLoss;
		BOOL bAlarm;
		BOOL bNotValid;

		if(wQuality & 0x4000)
			bDataLoss = TRUE; 
		else
			bDataLoss = FALSE; 

		if(wQuality & 0x2000)
			bAlarm = TRUE; 
		else
			bAlarm = FALSE; 

		if(wQuality & 0x8000)
		{
			bNotValid = TRUE; 
		}
		else
			bNotValid = FALSE; 

		if(!bNotValid)
		{
			m_Chart.SetRowCount(i+1);
			m_Chart.SetRow(i+1);

			CTime time = (*pTrenData)[i].ftTimeStamp;
			CString sTime = time.Format("%c");

			nValidValues +=1;
			m_Chart.SetRow(nValidValues);

			COleVariant Values = COleVariant((*pTrenData)[i].vDataValue);
			Values.ChangeType(VT_BSTR);
			CString sValue = OLE2A(Values.bstrVal);

			m_Chart.SetData(sValue);
			m_Chart.SetRowLabel(sTime);
		}
		else
			break;
	}
//	m_Chart.SetRowCount(nValidValues);

	CString sFootNote;

	sFootNote.Format(_T("Found samples: %d of %d"), nValidValues, pItem->GetRequestedSamples());
	m_Chart.SetFootnoteText(sFootNote);

	/*
	CVcTitle title = m_Chart.GetTitle();
	title.SetText("Chart XY");
	*/

}

BOOL CTrendGraphView::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt) 
{
	// TODO: Add your message handler code here and/or call default
	
	//normal handler causes an ASSERT
	//return CView::OnMouseWheel(nFlags, zDelta, pt);

	return TRUE;
}