File indexing completed on 2024-04-14 05:36:49

 /***************************************************************************
  *   Copyright (C) 2005 by John Myers                                      *
  *   electronerd@electronerdia.net                                         *
  *                                                                         *
  *   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.                                   *
  ***************************************************************************/
 
 #include "scopescreenview.h"
 #include "oscilloscope.h"
 #include "oscilloscopedata.h"
 #include "probe.h"
 #include "probepositioner.h"
 #include "simulator.h"
 
 #include <QPainter>
 #include <QTimer>
 
 #include <cmath>
 
 #include <ktechlab_debug.h>
 
 #define FADESPEED 1
 
 ScopeScreenView::ScopeScreenView(QWidget *parent)
     : ScopeViewBase(parent)
     , m_intervalsX(10)
     , m_ticksPerIntervalX(10000)
     , m_offsetX(0)
 {
     m_updateViewTmr = new QTimer(this);
     connect(m_updateViewTmr, SIGNAL(timeout()), this, SLOT(updateViewTimeout()));
     m_updateViewTmr->start(50);
 }
 
 ScopeScreenView::~ScopeScreenView()
 {
 }
 
 #if 0
 void ScopeScreenView::drawContents(QPainter * p)
 {
     QRect cr = contentsRect();
 
     for(int i =1; i < m_intervalsX; i++)
     {
         int x = cr.left() + cr.width()*i/m_intervalsX;
         p->drawLine(x, cr.top(), x, cr.bottom());
     }
     const int ticksPerScreen = m_intervalsX * m_ticksPerIntervalX;
     const double pixelsPerTick = cr.width()/double(ticksPerScreen);
     const double ticksPerPixel = m_intervalsX * m_ticksPerIntervalX / cr.width();   
     //draw the current time
     int curTimeX = ((Simulator::self()->time() + m_offsetX) % (ticksPerScreen)) * pixelsPerTick;
     //qCDebug(KTL_LOG) << curTimeX;
     p->drawLine(curTimeX, cr.top(), curTimeX, cr.bottom());
     
     //the following is liberally borrowed from OscilloscopeView::drawFloatingData
     const FloatingProbeDataMap::iterator end = Oscilloscope::self()->m_floatingProbeDataMap.end();
     for ( FloatingProbeDataMap::iterator it = Oscilloscope::self()->m_floatingProbeDataMap.begin(); it != end; ++it )
     {
         FloatingProbeData * probe = it.value();
         StoredData<float> * data = &(probe->m_data);
         
         if ( data->allocatedUpTo() == 0 )
             continue;
         
         bool logarithmic = probe->scaling() == FloatingProbeData::Logarithmic;
         double lowerAbsValue = probe->lowerAbsValue();
         double sf = ((cr.height()/Oscilloscope::self()->numberOfProbes())/2) / (logarithmic ? log(probe->upperAbsValue()/lowerAbsValue) : probe->upperAbsValue());
         
         const int midHeight = Oscilloscope::self()->probePositioner->probePosition(probe);
         //const int midHeight = cr.top() + cr.height()/2;       
         //const llong timeOffset = Oscilloscope::self()->scrollTime();
         const llong timeOffset = Simulator::self()->time() - (FADESPEED * m_intervalsX * m_ticksPerIntervalX);
         
         // Draw the horizontal line indicating the midpoint of our output
         p->setPen( QColor( 228, 228, 228 ) );
         p->drawLine( 0, midHeight, width(), midHeight );
         
         // Set the pen colour according to the colour the user has selected for the probe
         p->setPen( probe->color() );
         
         llong at = probe->findPos(timeOffset); 
         const llong maxAt = probe->insertPos();
         llong prevTime = probe->toTime(at);
         
         double v = data->dataAt((at>0)?at:0);
         int prevY = int(midHeight - (logarithmic ? ( (v>0) ? log(v/lowerAbsValue) : -log(-v/lowerAbsValue) ) : v) * sf);
         int prevX = (int((prevTime - timeOffset)*pixelsPerTick) + curTimeX) % cr.width();
         
         while ( at < maxAt-1 )
         {
             at++;
             
             ullong nextTime = probe->toTime(at);
             
             double v = data->dataAt((at>0)?at:0);
             int nextY = int(midHeight - (logarithmic ? ( (v>0) ? log(v/lowerAbsValue) : -log(-v/lowerAbsValue) ) : v) * sf);
             int nextX = (int((nextTime - timeOffset)*pixelsPerTick) + curTimeX) % cr.width();
             if(nextX < prevX)
             {
                 prevX = 0;
             }
             //qCDebug(KTL_LOG) <<at<<" "<<nextX<<" "<<nextY<<" "<<nextTime;
             p->drawLine( prevX, prevY, nextX, nextY );
             
             prevTime = nextTime;
             prevX = nextX;
             prevY = nextY;
             
             //if ( nextX > width() )
             //break;
         };
         
         // If we could not draw right to the end; it is because we exceeded
         // maxAt
         //if ( prevX < curTimeX )
         //  p->drawLine( prevX, prevY, curTimeX, prevY );
     }
     
     //and this was liberally borrowed from OscilloscopeView::DrawLogicData
     {
     const LogicProbeDataMap::iterator end = Oscilloscope::self()->m_logicProbeDataMap.end();
     for ( LogicProbeDataMap::iterator it = Oscilloscope::self()->m_logicProbeDataMap.begin(); it != end; ++it )
     {
         // When searching for the next logic value to display, we look along
         // until there is a recorded point which is at least one pixel along
         // If we are zoomed out far, there might be thousands of data points
         // between each pixel. It is time consuming searching for the next point
         // to display one at a time, so we record the average number of data points
         // between pixels ( = deltaAt / totalDeltaAt )
         llong deltaAt = 1;
         int totalDeltaAt = 1;
         
         LogicProbeData * probe = it.value();
         StoredData<LogicDataPoint> * data = &(probe->m_data);
         
         if ( data->allocatedUpTo() == 0 )
             continue;
         
         const int midHeight = Oscilloscope::self()->probePositioner->probePosition(probe);
         const llong timeOffset = Simulator::self()->time() - (FADESPEED * m_intervalsX * m_ticksPerIntervalX);//Oscilloscope::self()->scrollTime();
         
         const int halfOutputHeight = ((cr.height()/Oscilloscope::self()->numberOfProbes())/2);
         
         // Draw the horizontal line indicating the midpoint of our output
         p->setPen( QColor( 228, 228, 228 ) );
         p->drawLine( 0, midHeight, width(), midHeight );
         
         // Set the pen colour according to the colour the user has selected for the probe
         p->setPen( probe->color() );
         
         // The smallest time step that will display in our oscilloscope
         const int minTimeStep = ticksPerPixel;//int(LOGIC_UPDATE_RATE/pixelsPerSecond);
         
         llong at = probe->findPos(timeOffset);
         const llong maxAt = probe->insertPos();
         llong prevTime = data->dataAt(at).time;
         int prevX = (int((prevTime - timeOffset)*pixelsPerTick) + curTimeX) % cr.width();
         bool prevHigh = data->dataAt(at).value;
         int prevY = midHeight + int(prevHigh ? -halfOutputHeight : +halfOutputHeight);
         while ( at < maxAt )
         {
             // Search for the next pos which will show up at our zoom level
             llong previousAt = at;
             llong dAt = deltaAt / totalDeltaAt;
             
             while ( (dAt > 1) && (at < maxAt) && ( (llong(data->dataAt(at).time) - prevTime) != minTimeStep ) )
             {
                 // Search forwards until we overshoot
                 while ( at < maxAt && ( llong(data->dataAt(at).time) - prevTime ) < minTimeStep )
                     at += dAt;
                 dAt /= 2;
                 
                 // Search backwards until we undershoot
                 while ( (at < maxAt) && ( llong(data->dataAt(at).time) - prevTime ) > minTimeStep )
                 {
                     at -= dAt;
                     if ( at < 0 )
                         at = 0;
                 }
                 dAt /= 2;
             }
             
             // Possibly increment the value of at found by one (or more if this is the first go)
             while ( (previousAt == at) || ((at < maxAt) && ( llong(data->dataAt(at).time) - prevTime ) < minTimeStep) )
                 at++;
             
             if ( at >= maxAt )
                 break;
             
             // Update the average values
             deltaAt += at - previousAt;
             totalDeltaAt++;
             
             bool nextHigh = data->dataAt(at).value;
             if ( nextHigh == prevHigh )
                 continue;
             llong nextTime = data->dataAt(at).time;
             int nextX = (int((nextTime - timeOffset)*pixelsPerTick) + curTimeX) % cr.width();
             int nextY = midHeight + int(nextHigh ? -halfOutputHeight : +halfOutputHeight);
             
             p->drawLine( prevX, prevY, nextX, prevY );
             p->drawLine( nextX, prevY, nextX, nextY );
             
             prevHigh = nextHigh;
             prevTime = nextTime;
             prevX = nextX;
             prevY = nextY;
             
             if ( nextX > width() )
                 break;
         };
         
         // If we could not draw right to the end; it is because we exceeded
         // maxAt
         //if ( prevX < width() )
         //  p->drawLine( prevX, prevY, width(), prevY );
     }
     }
 }
 #endif
 void ScopeScreenView::setIntervalsX(int value)
 {
     m_intervalsX = value;
 }
 
 void ScopeScreenView::setTicksPerIntervalX(int value)
 {
     m_ticksPerIntervalX = value;
 }
 
 void ScopeScreenView::setOffsetX(int value)
 {
     m_offsetX = value;
 }
 
 void ScopeScreenView::updateViewTimeout()
 {
     repaint();
 }
 
 void ScopeScreenView::drawBackground(QPainter &p)
 {
     QRect cr = contentsRect();
 
     for (int i = 1; i < m_intervalsX; i++) {
         int x = cr.left() + cr.width() * i / m_intervalsX;
         p.drawLine(x, cr.top(), x, cr.bottom());
     }
 
     ///\todo REMOVE THIS NOTICE
 
     p.drawText(cr.left(), cr.top(), "NOT YET IMPLEMENTED");
 }
 
 void ScopeScreenView::drawMidLine(QPainter &p, ProbeData *probe)
 {
     const int midHeight = Oscilloscope::self()->probePositioner->probePosition(probe);
 
     // Draw the horizontal line indicating the midpoint of our output
     p.setPen(QColor(228, 228, 228));
     p.drawLine(0, midHeight, width(), midHeight);
 }
 
 void ScopeScreenView::drawProbe(QPainter & /*p*/, LogicProbeData */*probe*/)
 {
 }
 
 void ScopeScreenView::drawProbe(QPainter &/*p*/, FloatingProbeData */*probe*/)
 {
 }
 
 #include "moc_scopescreenview.cpp"