209 lines
7.4 KiB
C++
209 lines
7.4 KiB
C++
/******************************************************************************\
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* Copyright (c) 2004-2013
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "analyzerconsole.h"
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// Analyzer console implementation *********************************************
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CAnalyzerConsole::CAnalyzerConsole ( CClient* pNCliP,
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QWidget* parent,
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Qt::WindowFlags ) :
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QDialog ( parent ),
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pClient ( pNCliP ),
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GraphErrRateCanvasRect ( 0, 0, 600, 450 ), // defines total size of graph
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iGridFrameOffset ( 10 ),
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iLineWidth ( 2 ),
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iMarkerSize ( 10 ),
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iXAxisTextHeight ( 22 ),
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GraphBackgroundColor ( Qt::white ), // background
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GraphFrameColor ( Qt::black ), // frame
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GraphGridColor ( Qt::gray ), // grid
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LineColor ( Qt::blue ),
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LineLimitColor ( Qt::red ),
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GraphImage ( 1, 1, QImage::Format_RGB32 )
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{
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// set the window icon and title text
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const QIcon icon = QIcon ( QString::fromUtf8 ( ":/png/main/res/mainicon.png" ) );
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setWindowIcon ( icon );
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setWindowTitle ( tr ( "Analyzer Console" ) );
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// create main layout
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QVBoxLayout* pMainLayout = new QVBoxLayout;
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// create and add main tab widget
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pMainTabWidget = new QTabWidget ( this );
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pMainLayout->addWidget ( pMainTabWidget );
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setLayout ( pMainLayout );
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// error rate gaph tab
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pTabWidgetBufErrRate = new QWidget();
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QVBoxLayout* pTabErrRateLayout = new QVBoxLayout ( pTabWidgetBufErrRate );
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pGraphErrRate = new QLabel ( this );
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pTabErrRateLayout->addWidget ( pGraphErrRate );
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pMainTabWidget->addTab ( pTabWidgetBufErrRate,
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tr ( "Error Rate of Each Buffer Size" ) );
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// Connections -------------------------------------------------------------
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// timers
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QObject::connect ( &TimerErrRateUpdate, SIGNAL ( timeout() ),
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this, SLOT ( OnTimerErrRateUpdate() ) );
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}
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void CAnalyzerConsole::showEvent ( QShowEvent* )
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{
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// start timer for error rate graph
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TimerErrRateUpdate.start ( ERR_RATE_GRAPH_UPDATE_TIME_MS );
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}
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void CAnalyzerConsole::hideEvent ( QHideEvent* )
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{
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// if window is closed, stop timer
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TimerErrRateUpdate.stop();
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}
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void CAnalyzerConsole::OnTimerErrRateUpdate()
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{
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// generate current graph image
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DrawFrame();
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DrawErrorRateTrace();
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// set new image to the label
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pGraphErrRate->setPixmap ( QPixmap().fromImage ( GraphImage ) );
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}
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void CAnalyzerConsole::DrawFrame()
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{
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// scale image to correct size
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GraphImage = GraphImage.scaled (
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GraphErrRateCanvasRect.width(), GraphErrRateCanvasRect.height() );
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// generate plot grid frame rectangle
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GraphGridFrame.setRect ( GraphErrRateCanvasRect.x() + iGridFrameOffset,
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GraphErrRateCanvasRect.y() + iGridFrameOffset,
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GraphErrRateCanvasRect.width() - 2 * iGridFrameOffset,
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GraphErrRateCanvasRect.height() - 2 * iGridFrameOffset - iXAxisTextHeight );
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GraphImage.fill ( GraphBackgroundColor.rgb() ); // fill background
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// create painter
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QPainter GraphPainter ( &GraphImage );
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// create actual plot region (grid frame)
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GraphPainter.setPen ( GraphFrameColor );
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GraphPainter.drawRect ( GraphGridFrame );
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}
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void CAnalyzerConsole::DrawErrorRateTrace()
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{
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// create painter
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QPainter GraphPainter ( &GraphImage );
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// get the network buffer error rates to be displayed
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CVector<double> vecButErrorRates;
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double dLimit;
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pClient->GetBufErrorRates ( vecButErrorRates, dLimit );
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// get the number of data elements
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const int iNumBuffers = vecButErrorRates.Size();
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// convert the limit in the log domain
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const double dLogLimit = log10 ( dLimit );
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// use fixed y-axis scale where the limit line is in the middle of the graph
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const double dMax = 0;
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const double dMin = dLogLimit * 2;
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// calculate space between points on the x-axis
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const double dXSpace =
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static_cast<double> ( GraphGridFrame.width() ) / ( iNumBuffers - 1 );
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// plot the limit line as dashed line
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const double dYValLimitInGraph = CalcYPosInGraph ( dMin, dMax, dLogLimit );
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GraphPainter.setPen ( QPen ( QBrush ( LineLimitColor ),
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iLineWidth,
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Qt::DashLine ) );
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GraphPainter.drawLine ( QPoint ( GraphGridFrame.x(), dYValLimitInGraph ),
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QPoint ( GraphGridFrame.x() +
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GraphGridFrame.width(), dYValLimitInGraph ) );
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// plot the data
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for ( int i = 0; i < iNumBuffers; i++ )
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{
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// data convert in log domain
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// check for special case if error rate is 0 (which would lead to -Inf
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// after the log operation)
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if ( vecButErrorRates[i] > 0 )
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{
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vecButErrorRates[i] = log10 ( vecButErrorRates[i] );
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}
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else
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{
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// definition: set it to lowest possible axis value
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vecButErrorRates[i] = dMin;
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}
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// calculate the actual point in the graph (in pixels)
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const QPoint curPoint (
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GraphGridFrame.x() + static_cast<int> ( dXSpace * i ),
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CalcYPosInGraph ( dMin, dMax, vecButErrorRates[i] ) );
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// draw a marker and a solid line which goes from the bottom to the
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// marker (similar to Matlab stem() function)
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GraphPainter.setPen ( QPen ( QBrush ( LineColor ),
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iMarkerSize,
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Qt::SolidLine,
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Qt::RoundCap ) );
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GraphPainter.drawPoint ( curPoint );
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GraphPainter.setPen ( QPen ( QBrush ( LineColor ), iLineWidth ) );
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GraphPainter.drawLine ( QPoint ( curPoint.x(),
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GraphGridFrame.y() +
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GraphGridFrame.height() ),
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curPoint );
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}
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}
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int CAnalyzerConsole::CalcYPosInGraph ( const double dAxisMin,
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const double dAxisMax,
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const double dValue ) const
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{
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// calculate value range
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const double dValRange = dAxisMax - dAxisMin;
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// calculate current normalized y-axis value
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const double dYValNorm = ( dValue - dAxisMin ) / dValRange;
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// consider the graph grid size to calculate the final y-axis value
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return GraphGridFrame.y() + static_cast<int> (
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static_cast<double> ( GraphGridFrame.height() ) * ( 1 - dYValNorm ) );
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}
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