/******************************************************************************\ * Copyright (c) 2004-2019 * * Author(s): * Volker Fischer * Peter L Jones * ****************************************************************************** * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation; either version 2 of the License, or (at your option) any later * version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * \******************************************************************************/ #include "historygraph.h" /* Abstract class *************************************************************/ AHistoryGraph::AHistoryGraph() : sFileName ( "" ), bDoHistory ( false ), vHistoryDataFifo ( NUM_ITEMS_HISTORY ), iNumTicksX ( 0 ), // number of days in history BackgroundColor ( "white" ), // background FrameColor ( "black" ), // frame GridColor ( "gray" ), // grid TextColor ( "black" ), // text MarkerNewColor ( "darkCyan" ), // marker for new connection MarkerNewLocalColor ( "blue" ), // marker for new local connection MarkerStopColor ( "red" ), // marker for server stop canvasRectX ( 0 ), canvasRectY ( 0 ), canvasRectWidth ( 640 ), canvasRectHeight ( 450 ), iGridFrameOffset ( 10 ), iGridWidthWeekend ( 3 ), // should be an odd value iXAxisTextHeight ( 22 ), gridFrameX ( canvasRectX + iGridFrameOffset ), gridFrameY ( canvasRectY + iGridFrameOffset ), gridFrameWidth ( canvasRectWidth - 2 * iGridFrameOffset ), gridFrameHeight ( canvasRectHeight - 2 * iGridFrameOffset - iXAxisTextHeight ), gridFrameRight ( gridFrameX + gridFrameWidth - 1 ), gridFrameBottom ( gridFrameY + gridFrameHeight - 1 ), axisFontFamily ( "Arial" ), axisFontWeight ( "100" ), axisFontSize ( 12 ), iYAxisStart ( 0 ), iYAxisEnd ( 24 ), iNumTicksY ( 5 ), iTextOffsetToGrid ( 3 ), iTextOffsetX ( 18 ), iMarkerSizeNewCon ( 11 ), iMarkerSizeServSt ( 8 ) { } void AHistoryGraph::Start ( const QString& sNewFileName ) { QTextStream& tsConsoleStream = *( ( new ConsoleWriterFactory() )->get() ); tsConsoleStream << QString ( "AHistoryGraph::Start ( %1 )" ).arg ( sNewFileName ) << endl; // on console if ( !sNewFileName.isEmpty() ) { // save file name sFileName = sNewFileName; // set enable flag bDoHistory = true; // enable timer (update once a day) TimerDailyUpdate.start ( 3600000 * 24 ); // initial update (empty graph) Update(); } } void AHistoryGraph::Add ( const QDateTime& newDateTime, const EHistoryItemType curType ) { if ( bDoHistory ) { // create and add new element in FIFO SHistoryData curHistoryData; curHistoryData.DateTime = newDateTime; curHistoryData.Type = curType; vHistoryDataFifo.Add ( curHistoryData ); } } void AHistoryGraph::Add ( const QDateTime& newDateTime, const QHostAddress ClientInetAddr ) { if ( bDoHistory ) { // add element to history, distinguish between a local connection // and a remote connection if ( ( ClientInetAddr == QHostAddress ( "127.0.0.1" ) ) || ( ClientInetAddr.toString().left ( 7 ).compare ( "192.168" ) == 0 ) ) { // local connection Add ( newDateTime, HIT_LOCAL_CONNECTION ); } else { // remote connection Add ( newDateTime, HIT_REMOTE_CONNECTION ); } } } void AHistoryGraph::Update ( ) { if ( bDoHistory ) { int i; // store current date for reference curDate = QDate::currentDate(); // get oldest date in history QDate oldestDate = curDate.addDays ( 1 ); // one day in the future const int iNumItemsForHistory = vHistoryDataFifo.Size(); for ( i = 0; i < iNumItemsForHistory; i++ ) { // only use valid dates if ( vHistoryDataFifo[i].DateTime.date().isValid() ) { if ( vHistoryDataFifo[i].DateTime.date() < oldestDate ) { oldestDate = vHistoryDataFifo[i].DateTime.date(); } } } const int iNumDaysInHistory = -curDate.daysTo ( oldestDate ) + 1; // draw frame of the graph DrawFrame ( iNumDaysInHistory ); // add markers for ( i = 0; i < iNumItemsForHistory; i++ ) { // only use valid dates if ( vHistoryDataFifo[i].DateTime.date().isValid() ) { AddMarker ( vHistoryDataFifo[i] ); } } // save graph as picture in file Save ( sFileName ); } } void AHistoryGraph::DrawFrame ( const int iNewNumTicksX ) { int i; // store number of x-axis ticks (number of days we want to draw // the history for iNumTicksX = iNewNumTicksX; // Create actual plot region (grid frame) ---------------------------------- rect( gridFrameX, gridFrameY, gridFrameWidth, gridFrameHeight ); // calculate step for x-axis ticks so that we get the desired number of // ticks -> 5 ticks // TODO the following equation does not work as expected but results are acceptable // we want to have "floor ( iNumTicksX / 5 )" which is the same as // "iNumTicksX / 5" since "iNumTicksX" is an integer variable const int iXAxisTickStep = iNumTicksX / 5 + 1; // grid (ticks) for x-axis dayXSpace = static_cast ( gridFrameWidth ) / ( iNumTicksX + 1 ); for ( i = 0; i < static_cast ( iNumTicksX ); i++ ) { int iBottomExtraTickLen = 0; const int iCurX = gridFrameX + static_cast ( dayXSpace * ( i + 1 ) ); const QDate curXAxisDate = curDate.addDays ( 0 - static_cast ( iNumTicksX ) + i + 1 ); // text (print only every "iXAxisTickStep" tick) if ( !( i % iXAxisTickStep ) ) { text ( iCurX - iTextOffsetX, gridFrameBottom + iXAxisTextHeight + iTextOffsetToGrid, curXAxisDate.toString ( "dd.MM." ) ); iBottomExtraTickLen = 5; } // regular grid line ( iCurX, 1 + gridFrameY, iCurX, gridFrameBottom + iBottomExtraTickLen ); // different grid width for weekends (overwrite regular grid) if ( ( curXAxisDate.dayOfWeek() == 6 ) || // check for Saturday ( curXAxisDate.dayOfWeek() == 7 ) ) // check for Sunday { const int iGridWidthWeekendHalf = iGridWidthWeekend / 2; line ( iCurX, 1 + gridFrameY + iGridWidthWeekendHalf, iCurX, gridFrameBottom - iGridWidthWeekendHalf, iGridWidthWeekend ); } } // grid (ticks) for y-axis, draw iNumTicksY - 2 grid lines and // iNumTicksY - 1 text labels (the lowest grid line is the grid frame) iYSpace = gridFrameHeight / ( iNumTicksY - 1 ); for ( i = 0; i < ( static_cast ( iNumTicksY ) - 1 ); i++ ) { const int iCurY = gridFrameY + iYSpace * ( i + 1 ); // text text ( gridFrameX + iTextOffsetToGrid, iCurY - iTextOffsetToGrid, QString ( "%1:00" ).arg ( ( iYAxisEnd - iYAxisStart ) / ( iNumTicksY - 1 ) * ( ( iNumTicksY - 2 ) - i ) ) ); // grid (do not overwrite frame) if ( i < ( static_cast ( iNumTicksY ) - 2 ) ) { line ( gridFrameX, iCurY, gridFrameRight, iCurY ); } } } void AHistoryGraph::AddMarker ( const SHistoryData& curHistoryData ) { // calculate x-axis offset (difference of days compared to // current date) const int iXAxisOffs = curDate.daysTo ( curHistoryData.DateTime.date() ); // check range, if out of range, do not plot anything if ( -iXAxisOffs > ( static_cast ( iNumTicksX ) - 1 ) ) { return; } // calculate y-axis offset (consider hours and minutes) const double dYAxisOffs = 24 - curHistoryData.DateTime.time().hour() - static_cast ( curHistoryData.DateTime.time().minute() ) / 60; // calculate the actual point in the graph (in pixels) int curPointX = gridFrameX + static_cast ( dayXSpace * ( static_cast ( iNumTicksX ) + iXAxisOffs ) ); int curPointY = gridFrameY + static_cast ( static_cast ( gridFrameHeight ) / ( iYAxisEnd - iYAxisStart ) * dYAxisOffs ); QString curPointColour = MarkerNewColor; int curPointSize = iMarkerSizeNewCon; // we use different markers for new connection and server stop items switch ( curHistoryData.Type ) { case HIT_SERVER_STOP: curPointColour = MarkerStopColor; curPointSize = iMarkerSizeServSt; break; case HIT_LOCAL_CONNECTION: curPointColour = MarkerNewLocalColor; break; case HIT_REMOTE_CONNECTION: curPointColour = MarkerNewColor; break; } point ( curPointX - curPointSize / 2, curPointY - curPointSize / 2, curPointSize, curPointColour ); } /* JPEG History Graph implementation ******************************************/ CJpegHistoryGraph::CJpegHistoryGraph() : AHistoryGraph(), PlotPixmap ( 1, 1, QImage::Format_RGB32 ), iAxisFontWeight ( -1 ) { // scale pixmap to correct size PlotPixmap = PlotPixmap.scaled ( canvasRectWidth, canvasRectHeight ); // axisFontWeight is a string matching the CSS2 font-weight definition // Thin = 0, // 100 // ExtraLight = 12, // 200 // Light = 25, // 300 // Normal = 50, // 400 // Medium = 57, // 500 // DemiBold = 63, // 600 // Bold = 75, // 700 // ExtraBold = 81, // 800 // Black = 87 // 900 bool ok; int weight = axisFontWeight.toInt( &ok ); if ( !ok ) { if ( !QString ( "normal" ).compare ( axisFontWeight, Qt::CaseSensitivity::CaseInsensitive ) ) { iAxisFontWeight = 50; } else if ( !QString ( "bold" ).compare ( axisFontWeight, Qt::CaseSensitivity::CaseInsensitive ) ) { weight = 75; } } else { if ( weight <= 100 ) { iAxisFontWeight = 0; } else if ( weight <= 200 ) { iAxisFontWeight = 12; } else if ( weight <= 300 ) { iAxisFontWeight = 25; } else if ( weight <= 400 ) { iAxisFontWeight = 50; } else if ( weight <= 500 ) { iAxisFontWeight = 57; } else if ( weight <= 600 ) { iAxisFontWeight = 63; } else if ( weight <= 700 ) { iAxisFontWeight = 75; } else if ( weight <= 800 ) { iAxisFontWeight = 81; } else if ( weight <= 900 ) { iAxisFontWeight = 87; } } // if all else fails, it's left at -1 // QTextStream& tsConsoleStream = *( ( new ConsoleWriterFactory() )->get() ); // tsConsoleStream << "CJpegHistoryGraph" << endl; // on console // Connections ------------------------------------------------------------- QObject::connect ( &TimerDailyUpdate, SIGNAL ( timeout() ), this, SLOT ( OnTimerDailyUpdate() ) ); } // Override Update to blank out the plot area each time void CJpegHistoryGraph::Update() { if ( bDoHistory ) { // create JPEG image PlotPixmap.fill ( BackgroundColor ); // fill background AHistoryGraph::Update(); } } void CJpegHistoryGraph::Save ( const QString sFileName ) { // save plot as a file PlotPixmap.save ( sFileName, "JPG", 90 ); } void CJpegHistoryGraph::rect ( const unsigned int x, const unsigned int y, const unsigned int width, const unsigned int height ) { QPainter PlotPainter ( &PlotPixmap ); PlotPainter.setPen ( FrameColor ); PlotPainter.drawRect ( x, y, width, height ); } void CJpegHistoryGraph::text ( const unsigned int x, const unsigned int y, const QString& value ) { QPainter PlotPainter ( &PlotPixmap ); PlotPainter.setPen ( TextColor ); // QFont(const QString &family, int pointSize = -1, int weight = -1, bool italic = false); PlotPainter.setFont ( QFont( axisFontFamily, static_cast ( axisFontSize ), iAxisFontWeight ) ); PlotPainter.drawText ( QPoint ( x, y ), value ); } void CJpegHistoryGraph::line ( const unsigned int x1, const unsigned int y1, const unsigned int x2, const unsigned int y2, const unsigned int strokeWidth ) { QPainter PlotPainter ( &PlotPixmap ); PlotPainter.setPen ( QPen ( QBrush ( QColor ( GridColor ) ), strokeWidth ) ); PlotPainter.drawLine ( x1, y1, x2, y2 ); } void CJpegHistoryGraph::point ( const unsigned int x, const unsigned int y, const unsigned int size, const QString& colour ) { QPainter PlotPainter ( &PlotPixmap ); PlotPainter.setPen ( QPen ( QBrush( QColor ( colour ) ), size ) ); PlotPainter.drawPoint ( x, y ); } /* SVG History Graph implementation *******************************************/ CSvgHistoryGraph::CSvgHistoryGraph() : AHistoryGraph(), svgImage ( "" ), svgStreamWriter ( &svgImage ) { // set SVG veiwBox to correct size to ensure correct scaling svgRootAttributes.append ( "viewBox", QString ( "%1, %2, %3, %4" ) .arg ( canvasRectX ) .arg ( canvasRectY ) .arg ( canvasRectWidth ) .arg ( canvasRectHeight ) ); svgRootAttributes.append ( "xmlns", "http://www.w3.org/2000/svg" ); svgRootAttributes.append ( "xmlns:xlink", "http://www.w3.org/1999/xlink" ); // QTextStream& tsConsoleStream = *( ( new ConsoleWriterFactory() )->get() ); // tsConsoleStream << "CSvgHistoryGraph" << endl; // on console // Connections ------------------------------------------------------------- QObject::connect ( &TimerDailyUpdate, SIGNAL ( timeout() ), this, SLOT ( OnTimerDailyUpdate() ) ); } // Override Update to create the fresh SVG stream each time void CSvgHistoryGraph::Update() { if ( bDoHistory ) { // create SVG document svgImage = ""; svgStreamWriter.setAutoFormatting ( true ); svgStreamWriter.writeStartDocument(); svgStreamWriter.writeStartElement ( "svg" ); svgStreamWriter.writeAttributes ( svgRootAttributes ); AHistoryGraph::Update(); } } void CSvgHistoryGraph::Save ( const QString sFileName ) { svgStreamWriter.writeEndDocument(); QFile outf ( sFileName ); if ( !outf.open ( QFile::WriteOnly ) ) { throw std::runtime_error ( ( sFileName + " could not be written. Aborting." ).toStdString() ); } QTextStream out ( &outf ); out << svgImage << endl; } void CSvgHistoryGraph::rect ( const unsigned int x, const unsigned int y, const unsigned int width, const unsigned int height ) { svgStreamWriter.writeEmptyElement ( "rect" ); svgStreamWriter.writeAttribute ( "x", QString ( "%1" ).arg ( x ) ); svgStreamWriter.writeAttribute ( "y", QString ( "%1" ).arg ( y ) ); svgStreamWriter.writeAttribute ( "width", QString ( "%1" ).arg ( width ) ); svgStreamWriter.writeAttribute ( "height", QString ( "%1" ).arg ( height ) ); svgStreamWriter.writeAttribute ( "stroke", FrameColor ); svgStreamWriter.writeAttribute ( "stroke-width", QString ( "1" ) ); svgStreamWriter.writeAttribute ( "style", QString ( "fill: none;" ) ); } void CSvgHistoryGraph::text ( const unsigned int x, const unsigned int y, const QString& value ) { svgStreamWriter.writeStartElement ( "text" ); svgStreamWriter.writeAttribute ( "x", QString ( "%1" ).arg ( x ) ); svgStreamWriter.writeAttribute ( "y", QString ( "%1" ).arg ( y ) ); svgStreamWriter.writeAttribute ( "stroke", TextColor ); svgStreamWriter.writeAttribute ( "font-family", axisFontFamily ); svgStreamWriter.writeAttribute ( "font-weight", axisFontWeight ); svgStreamWriter.writeAttribute ( "font-size", QString ( "%1" ).arg ( axisFontSize ) ); svgStreamWriter.writeCharacters( value ); svgStreamWriter.writeEndElement(); } void CSvgHistoryGraph::line ( const unsigned int x1, const unsigned int y1, const unsigned int x2, const unsigned int y2, const unsigned int strokeWidth ) { svgStreamWriter.writeEmptyElement ( "line" ); svgStreamWriter.writeAttribute ( "x1", QString ( "%1" ).arg ( x1 ) ); svgStreamWriter.writeAttribute ( "y1", QString ( "%1" ).arg ( y1 ) ); svgStreamWriter.writeAttribute ( "x2", QString ( "%1" ).arg ( x2 ) ); svgStreamWriter.writeAttribute ( "y2", QString ( "%1" ).arg ( y2 ) ); svgStreamWriter.writeAttribute ( "stroke", GridColor ); svgStreamWriter.writeAttribute ( "stroke-width", QString ( "%1" ).arg ( strokeWidth ) ); } void CSvgHistoryGraph::point ( const unsigned int x, const unsigned int y, const unsigned int size, const QString& colour ) { svgStreamWriter.writeEmptyElement ( "rect" ); svgStreamWriter.writeAttribute ( "x", QString ( "%1" ).arg ( x ) ); svgStreamWriter.writeAttribute ( "y", QString ( "%1" ).arg ( y ) ); svgStreamWriter.writeAttribute ( "width", QString ( "%1" ).arg ( size ) ); svgStreamWriter.writeAttribute ( "height", QString ( "%1" ).arg ( size ) ); svgStreamWriter.writeAttribute ( "stroke-opacity", "0" ); svgStreamWriter.writeAttribute ( "fill", colour ); }