324 lines
10 KiB
C++
Executable File
324 lines
10 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2009
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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 "serverlogging.h"
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/* Implementation *************************************************************/
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CHistoryGraph::CHistoryGraph ( const QString& sNewFileName ) :
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sFileName ( sNewFileName ),
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vDateTimeFifo ( NUM_ITEMS_HISTORY ),
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vItemTypeFifo ( NUM_ITEMS_HISTORY ),
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PlotCanvasRect ( 0, 0, 600, 450 ), // defines total size of graph
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iYAxisStart ( 0 ),
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iYAxisEnd ( 24 ),
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iNumTicksY ( 5 ),
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iNumTicksX ( 0 ), // just initialization value, will be overwritten
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iGridFrameOffset ( 10 ),
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iTextOffsetToGrid ( 3 ),
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iYAxisTextHeight ( 20 ),
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AxisFont ( "Arial", 10 ),
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iMarkerSize ( 9 ),
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PlotBackgroundColor ( Qt::white ), // white background
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PlotFrameColor ( Qt::black ), // black frame
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PlotGridColor ( Qt::gray ), // gray grid
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PlotTextColor ( Qt::black ), // black text
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PlotMarkerNewColor ( Qt::blue ), // blue marker for new connection
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PlotMarkerStopColor ( Qt::red ), // red marker server stop
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PlotPixmap ( 1, 1 )
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{
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// generate plot grid frame rectangle
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PlotGridFrame.setCoords ( PlotCanvasRect.x() + iGridFrameOffset,
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PlotCanvasRect.y() + iGridFrameOffset,
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PlotCanvasRect.width() - 2 * iGridFrameOffset,
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PlotCanvasRect.height() - 2 * iGridFrameOffset - iYAxisTextHeight );
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// scale pixmap to correct size
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PlotPixmap = PlotPixmap.scaled (
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PlotCanvasRect.width(), PlotCanvasRect.height() );
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}
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void CHistoryGraph::DrawFrame ( const int iNewNumTicksX )
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{
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int i;
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// store number of x-axis ticks (number of days we want to draw
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// the history for
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iNumTicksX = iNewNumTicksX;
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// clear base pixmap for new plotting
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PlotPixmap.fill ( PlotBackgroundColor ); // fill background
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// create painter
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QPainter PlotPainter ( &PlotPixmap );
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// create actual plot region (grid frame) ----------------------------------
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PlotPainter.setPen ( PlotFrameColor );
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PlotPainter.drawRect ( PlotGridFrame );
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// calculate step for x-axis ticks so that we get the desired number of
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// ticks -> 5 ticks
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// TODO the following equation does not work as expected but results are exeptable
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// we want to have "floor ( iNumTicksX / 5 )" which is the same as
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// "iNumTicksX / 5" since "iNumTicksX" is an integer variable
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const int iXAxisTickStep = iNumTicksX / 5 + 1;
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// grid (ticks) for x-axis
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const int iTextOffsetX = 20;
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iXSpace = PlotGridFrame.width() / ( iNumTicksX + 1 );
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for ( i = 0; i < iNumTicksX; i++ )
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{
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int iBottomExtraTickLen = 0;
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const int iCurX = PlotGridFrame.x() + iXSpace * ( i + 1 );
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// text (print only every "iXAxisTickStep" tick)
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if ( !( i % iXAxisTickStep ) )
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{
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PlotPainter.setPen ( PlotTextColor );
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PlotPainter.setFont ( AxisFont );
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PlotPainter.drawText (
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QPoint ( iCurX - iTextOffsetX,
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PlotGridFrame.bottom() + iYAxisTextHeight + iTextOffsetToGrid ),
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curDate.addDays ( i - iNumTicksX + 1 ).toString ( "dd.MM." ) );
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iBottomExtraTickLen = 5;
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}
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// grid
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PlotPainter.setPen ( PlotGridColor );
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PlotPainter.drawLine ( iCurX, PlotGridFrame.y(),
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iCurX, PlotGridFrame.bottom() + iBottomExtraTickLen );
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}
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// grid (ticks) for y-axis, draw iNumTicksY - 2 grid lines and
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// iNumTicksY - 1 text labels (the lowest grid line is the grid frame)
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iYSpace = PlotGridFrame.height() / ( iNumTicksY - 1 );
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for ( i = 0; i < ( iNumTicksY - 1 ); i++ )
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{
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const int iCurY = PlotGridFrame.y() + iYSpace * ( i + 1 );
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// text
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PlotPainter.setPen ( PlotTextColor );
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PlotPainter.setFont ( AxisFont );
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PlotPainter.drawText ( QPoint (
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PlotGridFrame.x() + iTextOffsetToGrid,
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iCurY - iTextOffsetToGrid ),
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QString ( "%1:00" ).arg (
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( iYAxisEnd - iYAxisStart ) / ( iNumTicksY - 1 ) *
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( ( iNumTicksY - 2 ) - i ) ) );
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// grid (do not overwrite frame)
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if ( i < ( iNumTicksY - 2 ) )
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{
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PlotPainter.setPen ( PlotGridColor );
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PlotPainter.drawLine ( PlotGridFrame.x(), iCurY,
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PlotGridFrame.right(), iCurY );
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}
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}
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}
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void CHistoryGraph::AddMarker ( const QDateTime& curDateTime,
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const bool bIsServerStop )
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{
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// calculate x-axis offset (difference of days compared to
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// current date)
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const int iXAxisOffs = curDate.daysTo ( curDateTime.date() );
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// check range, if out of range, do not plot anything
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if ( -iXAxisOffs > ( iNumTicksX - 1 ) )
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{
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return;
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}
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// calculate y-axis offset (consider hours and minutes)
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const double dYAxisOffs = 24 - curDateTime.time().hour() -
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static_cast<double> ( curDateTime.time().minute() ) / 60;
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// calculate the actual point in the graph (in pixels)
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const QPoint curPoint (
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PlotGridFrame.x() + iXSpace * ( iNumTicksX + iXAxisOffs ),
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PlotGridFrame.y() + static_cast<int> ( static_cast<double> (
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PlotGridFrame.height() ) / ( iYAxisEnd - iYAxisStart ) * dYAxisOffs ) );
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// create painter for plot
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QPainter PlotPainter ( &PlotPixmap );
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// we use different markers for new connection and server stop items
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if ( bIsServerStop )
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{
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// filled circle marker
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PlotPainter.setPen ( QPen ( QBrush ( PlotMarkerStopColor ),
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iMarkerSize, Qt::SolidLine, Qt::RoundCap ) );
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}
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else
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{
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// filled square marker
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PlotPainter.setPen ( QPen ( QBrush ( PlotMarkerNewColor ),
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iMarkerSize ) );
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}
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PlotPainter.drawPoint ( curPoint );
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}
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void CHistoryGraph::Save ( const QString sFileName )
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{
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// save plot as a file
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PlotPixmap.save ( sFileName, "JPG", 90 );
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}
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void CHistoryGraph::Add ( const QDateTime& newDateTime,
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const bool newIsServerStop )
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{
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// add new element in FIFOs
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vDateTimeFifo.Add ( newDateTime );
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vItemTypeFifo.Add ( static_cast<int> ( newIsServerStop ) );
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}
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void CHistoryGraph::Update()
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{
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int i;
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// store current date for reference
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curDate = QDate::currentDate();
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// get oldest date in history
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QDate oldestDate = curDate.addDays ( 1 ); // one day in the future
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const int iNumItemsForHistory = vDateTimeFifo.Size();
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for ( i = 0; i < iNumItemsForHistory; i++ )
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{
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// only use valid dates
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if ( vDateTimeFifo[i].date().isValid() )
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{
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if ( vDateTimeFifo[i].date() < oldestDate )
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{
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oldestDate = vDateTimeFifo[i].date();
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}
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}
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}
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const int iNumDaysInHistory = -curDate.daysTo ( oldestDate ) + 1;
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// draw frame of the graph
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DrawFrame ( iNumDaysInHistory );
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// add markers
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for ( i = 0; i < iNumItemsForHistory; i++ )
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{
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AddMarker ( vDateTimeFifo[i], static_cast<bool> ( vItemTypeFifo[i] ) );
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}
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// save graph as picture in file
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Save ( sFileName );
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}
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CServerLogging::CServerLogging() :
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bDoLogging ( false ),
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File ( DEFAULT_LOG_FILE_NAME ),
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HistoryGraph ( "test.jpg" )
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{
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#if 1
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// TEST add some elements
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HistoryGraph.Add ( QDateTime ( QDate::currentDate().addDays ( -1 ),
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QTime ( 18, 0, 0, 0 ) ), false );
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HistoryGraph.Add ( QDateTime ( QDate::currentDate().addDays ( -0 ),
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QTime ( 17, 50, 0, 0 ) ), true );
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HistoryGraph.Update();
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#endif
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}
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CServerLogging::~CServerLogging()
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{
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// close logging file of open
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if ( File.isOpen() )
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{
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File.close();
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}
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}
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void CServerLogging::Start ( const QString& strLoggingFileName )
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{
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// open file
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File.setFileName ( strLoggingFileName );
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if ( File.open ( QIODevice::Append | QIODevice::Text ) )
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{
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bDoLogging = true;
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}
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}
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void CServerLogging::AddNewConnection ( const QHostAddress& ClientInetAddr )
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{
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// logging of new connected channel
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const QString strLogStr = CurTimeDatetoLogString() + ", " +
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ClientInetAddr.toString() + ", connected";
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#ifndef _WIN32
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QTextStream tsConsoloeStream ( stdout );
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tsConsoloeStream << strLogStr << endl; // on console
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#endif
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*this << strLogStr; // in log file
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}
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void CServerLogging::AddServerStopped()
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{
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const QString strLogStr = CurTimeDatetoLogString() + ",, server stopped "
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"-------------------------------------";
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#ifndef _WIN32
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QTextStream tsConsoloeStream ( stdout );
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tsConsoloeStream << strLogStr << endl; // on console
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#endif
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*this << strLogStr; // in log file
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}
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void CServerLogging::operator<< ( const QString& sNewStr )
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{
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if ( bDoLogging )
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{
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// append new line in logging file
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QTextStream out ( &File );
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out << sNewStr << endl;
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File.flush();
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}
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}
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QString CServerLogging::CurTimeDatetoLogString()
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{
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// time and date to string conversion
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const QDateTime curDateTime = QDateTime::currentDateTime();
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// format date and time output according to "3.9.2006, 11:38:08"
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return QString().setNum ( curDateTime.date().day() ) + "." +
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QString().setNum ( curDateTime.date().month() ) + "." +
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QString().setNum ( curDateTime.date().year() ) + ", " +
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curDateTime.time().toString();
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}
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