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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//=============================================================================//
// GraphControl.cpp : implementation file
//
#include "stdafx.h"
#include "vmpi_browser_job_watch.h"
#include "GraphControl.h"
#include "mathlib/mathlib.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CGraphControl
CGraphControl::CGraphControl()
{
}
CGraphControl::~CGraphControl()
{
}
BEGIN_MESSAGE_MAP(CGraphControl, CWnd)
//{{AFX_MSG_MAP(CGraphControl)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CGraphControl::Clear()
{
CRect rcClient;
GetClientRect( rcClient );
CDC *pDC = GetDC();
CBrush brush( RGB( 0, 0, 0 ) );
CBrush *pOldBrush = pDC->SelectObject( &brush );
pDC->Rectangle( 0, 0, rcClient.Width(), rcClient.Height() );
pDC->SelectObject( pOldBrush );
ReleaseDC( pDC );
}
void CGraphControl::Render( CDC *pDC )
{
// Clear the background.
CRect rcClient;
GetClientRect( rcClient );
CBrush brush( RGB( 0, 0, 0 ) );
CBrush *pOldBrush = pDC->SelectObject( &brush );
pDC->Rectangle( 0, 0, rcClient.Width(), rcClient.Height() );
pDC->SelectObject( pOldBrush );
// Work backwards from the right side to the left.
int nIntervals = rcClient.Width();
DWORD intervalMS = 500; // one interval per pixel
DWORD startTime = 0xFFFFFFFF, endTime = 0;
// First, find which order of magnitude to use on the vertical scale by finding the maximum value.
for ( int iEntry=0; iEntry < m_Entries.Count(); iEntry++ )
{
DWORD msTime = m_Entries[iEntry].m_msTime;
startTime = min( startTime, msTime );
endTime = max( endTime, msTime );
}
int curTime = (int)endTime - nIntervals*intervalMS;
CGraphEntry prevEntry, curEntry;
prevEntry.m_msTime = curEntry.m_msTime = -1;
CUtlVector<POINT> sentPoints;
CUtlVector<POINT> receivedPoints;
int iCurEntry = -1;
int nMaxBytesSent = -1, nMaxBytesReceived = -1;
for ( int x=0; x < nIntervals; x++ )
{
if ( curTime >= 0 )
{
// Now find the graph_entry for the time we're at.
while ( prevEntry.m_msTime == -1 || curTime > curEntry.m_msTime )
{
++iCurEntry;
if ( iCurEntry >= m_Entries.Count() )
goto ENDLOOP;
prevEntry = curEntry;
curEntry = m_Entries[iCurEntry];
}
if ( curTime >= prevEntry.m_msTime && curTime <= curEntry.m_msTime )
{
// Interpolate the bytes sent.
int nBytesSent = (int)RemapVal(
curTime,
prevEntry.m_msTime, curEntry.m_msTime,
prevEntry.m_nBytesSent, curEntry.m_nBytesSent );
POINT sentPoint = { x, nBytesSent };
sentPoints.AddToTail( sentPoint );
nMaxBytesSent = max( nMaxBytesSent, nBytesSent );
int nBytesReceived = (int)RemapVal(
curTime,
prevEntry.m_msTime, curEntry.m_msTime,
prevEntry.m_nBytesReceived, curEntry.m_nBytesReceived );
POINT receivedPoint = { x, nBytesReceived };
receivedPoints.AddToTail( receivedPoint );
nMaxBytesReceived = max( nMaxBytesReceived, nBytesReceived );
}
}
curTime += intervalMS;
}
ENDLOOP:;
// Now normalize all the values.
int largest = max( nMaxBytesSent, nMaxBytesReceived );
int topValue = (largest*11) / 10;
/*
DWORD nZeros;
for( nZeros = 1; nZeros < 20; nZeros++ )
{
if ( largest < pow( 10, nZeros ) )
break;
}
// Now find the value at the top of the graph. We choose the smallest enclosing tenth of the
// order of magnitude we're at (so if we were at 1,000,000, and our max value was 350,000, we'd choose 400,000).
int iTenth;
int topValue;
for ( iTenth=1; iTenth <= 10; iTenth++ )
{
topValue = (DWORD)( pow( 10, nZeros-1 ) * iTenth );
if ( topValue >= largest )
break;
}
*/
for ( int iSample=0; iSample < sentPoints.Count(); iSample++ )
{
double flHeight;
flHeight = ((double)sentPoints[iSample].y / topValue) * (rcClient.Height() - 1);
sentPoints[iSample].y = (int)( rcClient.Height() - flHeight );
flHeight = ((double)receivedPoints[iSample].y / topValue) * (rcClient.Height() - 1);
receivedPoints[iSample].y = (int)( rcClient.Height() - flHeight );
}
// Draw some horizontal lines dividing the space.
int nLines = 10;
for ( int iLine=0; iLine <= nLines; iLine++ )
{
CPen penLine;
COLORREF color;
if ( iLine == 0 || iLine == nLines/2 )
color = RGB( 0, 220, 0 );
else
color = RGB( 0, 100, 0 );
penLine.CreatePen( PS_SOLID, 1, color );
CPen *pOldPen = pDC->SelectObject( &penLine );
int y = (iLine * rcClient.Height()) / nLines;
pDC->MoveTo( 0, y );
pDC->LineTo( rcClient.Width(), y );
pDC->SelectObject( pOldPen );
}
// Now draw the lines for the data.
CPen penSent( PS_SOLID, 1, RGB( 0, 255, 0 ) );
CPen *pOldPen = pDC->SelectObject( &penSent );
pDC->Polyline( sentPoints.Base(), sentPoints.Count() );
pDC->SelectObject( pOldPen );
CPen penReceived( PS_SOLID, 1, RGB( 255, 255, 0 ) );
pOldPen = pDC->SelectObject( &penReceived );
pDC->Polyline( receivedPoints.Base(), receivedPoints.Count() );
pDC->SelectObject( pOldPen );
// Draw text labels.
pDC->SetTextColor( RGB( 200, 200, 200 ) );
pDC->SetBkColor( 0 );
CString str;
str.Format( "%dk", (topValue+511) / 1024 );
pDC->ExtTextOut( 0, 1, 0, NULL, str, NULL );
str.Format( "%dk", (topValue+511) / 1024 / 2 );
pDC->ExtTextOut( 0, rcClient.Height()/2 + 1, 0, NULL, str, NULL );
}
void CGraphControl::Fill( CUtlVector<CGraphEntry> &entries )
{
CDC *pDC = GetDC();
if ( !pDC )
return;
m_Entries = entries;
Render( pDC );
ReleaseDC( pDC );
}
/////////////////////////////////////////////////////////////////////////////
// CGraphControl message handlers
void CGraphControl::OnPaint()
{
CPaintDC dc(this); // device context for painting
Render( &dc );
}
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