Changeset 10984 for fact/Evidence

Timestamp:

06/10/11 15:02:24 (14 years ago)

Author:

ogrimm

Message:

Edd allows to set plot update rate

Location:

fact/Evidence

Files:

• GUI.cc (modified) (11 diffs)
• GUI.h (modified) (4 diffs)

fact/Evidence/GUI.cc

@@ -46 +46 @@
   if (Format.size() == 1 && Format[0] != 'C') return new EddPlot(Service, Index);
   else return new EddText(Service);
+  
+  
 }
 
@@ -235 +237 @@
   setAcceptDrops(true);
   setAxisScaleDraw(QwtPlot::xBottom, new EddTimeScale);
-        
+
   // Update time range on plot when axis change (update() results in paintEvent())
   connect(axisWidget(QwtPlot::xBottom), SIGNAL(scaleDivChanged()), SLOT(update()));
@@ -252 +254 @@
   Menu->insertAction(Menu->actions().value(1), Action);
   
-  // Maximum number if points in curve (will be increased in Update())
-  SizeLimit = 0;
+  // Set timer to regularly update plot if new data available
+  SingleShot = new QTimer(this);
+  connect(SingleShot, SIGNAL(timeout()), this, SLOT(UpdatePlot()));
+  SingleShot->setSingleShot(true);
 
   // DIM client
@@ -284 +288 @@
   List.append(N);
 
+  // Request new history buffer
+  const struct EvidenceHistory::Item *R;
+  class EvidenceHistory *Hist;
+
+  if ((Hist = Handler->GetHistory(Name)) != NULL) {
+        double Number=0;
+        while ((R=Hist->Next()) != NULL) {
+          switch (*(Hist->GetFormat())) {
+        case 'I':
+                case 'L':  Number = *((int *) R->Data + N.Index);   break;
+        case 'S':  Number = *((short *) R->Data + N.Index);   break;
+        case 'F':  Number = *((float *) R->Data + N.Index);   break;
+        case 'D':  Number = *((double *) R->Data + N.Index);   break;
+        case 'X':  Number = *((long long *) R->Data + N.Index);   break;
+        default: break;
+          }
+          AddPoint(List.size()-1, R->Time, Number);
+        }
+  }
+  Handler->DropHistory(Name);
   Handler->Subscribe(Name);
+  
+  SingleShot->start(100);
 }
 
@@ -290 +316 @@
 void EddPlot::Update(QString Name, int Time, QByteArray, QString Format, QString Text) {
 
-  bool DoUpdate = false;
-
-  // Determine which plot item this call belongs to
-  int ItemNo;
-  for (ItemNo=0; ItemNo<List.size(); ItemNo++) if (List[ItemNo].Name == Name) {
-
-        DoUpdate = true;
-
-        // If size limit reached, clear buffer
-    if (List[ItemNo].Signal->dataSize() > SizeLimit) List[ItemNo].Signal->setData(QPolygonF());
-
-        // If buffer empty, request new history buffer
-    if (List[ItemNo].Signal->dataSize() == 0) {
-          int Count=0;
-          const struct EvidenceHistory::Item *R;
-          class EvidenceHistory *Hist;
-
-          if ((Hist = Handler->GetHistory(List[ItemNo].Name)) != NULL) {
-                double Number=0;
-                while ((R=Hist->Next()) != NULL) {
-                  switch (*(Hist->GetFormat())) {
-                case 'I':
-                        case 'L':  Number = *((int *) R->Data + List[ItemNo].Index);   break;
-                case 'S':  Number = *((short *) R->Data + List[ItemNo].Index);   break;
-                case 'F':  Number = *((float *) R->Data + List[ItemNo].Index);   break;
-                case 'D':  Number = *((double *) R->Data + List[ItemNo].Index);   break;
-                case 'X':  Number = *((long long *) R->Data + List[ItemNo].Index);   break;
-                default: break;
-                  }
-                  AddPoint(ItemNo, R->Time, Number);
-                  Count++;
-                }
-
-                // Local buffer at least twice as large as longest history
-                if (SizeLimit < 2*Count) SizeLimit = 2*Count;
-          }
-          Handler->DropHistory(List[ItemNo].Name);
-        }
-
-        // Append data only if service available
+  for (int ItemNo=0; ItemNo<List.size(); ItemNo++) if (List[ItemNo].Name == Name) {
+
+        // Append data if service available
         if (SetStatus(this, Name, Time, Format)) {
           QString Txt = Text;
@@ -335 +324 @@
       AddPoint(ItemNo, Time, atof(Txt.toAscii().data()));
         }
-  }
-
-  if (DoUpdate) UpdatePlot();
+
+        NewData = true;
+  }
 }
 
@@ -412 +401 @@
   setCanvasBackground(EddPlotBackgroundColor);
   setMargin(15);
+  NewData = false;
 
   // Plot navigation
@@ -460 +450 @@
   Menu->addAction("Single trace", this, SLOT(MenuSingleTrace()));
   Menu->addSeparator();
+  Menu->addAction("Set update rate", this, SLOT(MenuSetUpdateRate()));  
+  Menu->addSeparator();
   Menu->addAction("Save as ASCII", this, SLOT(MenuSaveASCII()));
   Menu->addAction("Save plot", this, SLOT(MenuSave()));
   Menu->addAction("Print plot", this, SLOT(MenuPrint()));
   Menu->addAction("Plot help", this, SLOT(MenuPlotHelp()));
+  
+  // Set timer to regularly update plot if new data available
+  Timer = new QTimer(this);
+  connect(Timer, SIGNAL(timeout()), this, SLOT(UpdatePlot()));
+  Timer->start(2000);
 }
 
@@ -527 +524 @@
   Symbol.setStyle(QwtSymbol::Ellipse);
   Symbol.setSize(4);
+
+  // Only update if called by timer if new data is available
+  if (sender() == Timer && !NewData) return;
+  NewData = false;
 
   // Select engine for linear or logarithmic scale
@@ -560 +561 @@
       }  
     }
- 
+
     // Plot data
     Items[ItemNo].Signal->setData(Items[ItemNo].x.data(), y, DataPoints);
@@ -716 +717 @@
   }
   UpdatePlot();
+}
+
+// Set maximum update rate of plot
+void EddBasePlot::MenuSetUpdateRate() {
+
+  bool OK;
+  double Rate;
+  
+  Rate = QInputDialog::getDouble(this, "Edd Request",
+    "Minimum period between plot updates (sec)", (double) Timer->interval()/1000, 0, std::numeric_limits<double>::max(), 2, &OK);
+  if (OK) Timer->setInterval(Rate*1000);
 }
 

fact/Evidence/GUI.h

@@ -22 +22 @@
 #include <qwt_color_map.h>
 
-#include <limits.h>
+#include <limits>
 #include <float.h>
+#include <limits>
 
 #include "dic.hxx"
@@ -72 +73 @@
     ~EddBasePlot();
 
+        QTimer *Timer;
+        bool NewData;
         QwtPlotCurve *NewCurve(QwtText);
         void ClearCurve(unsigned int);
@@ -86 +89 @@
         void contextMenuEvent(QContextMenuEvent *);
     void MenuSingleTrace();        
+    void MenuSetUpdateRate();        
     void MenuZoomOut();
     void MenuSaveASCII();
@@ -172 +176 @@
   private:
         QwtLegend *Legend;
-        int SizeLimit;
+        QTimer *SingleShot;
 
     void dragEnterEvent(QDragEnterEvent *);