Graphing window now retains your current view when graphs are added and subtracted unless you get down to no graphs.

This makes it easier to load lots of graphs and do work without having the graph constantly resize.

graphingwindow.cpp

@@ -58,6 +58,8 @@ GraphingWindow::GraphingWindow(QVector<CANFrame> *frames, QWidget *parent) :
 
     selectedPen.setWidth(1);
     selectedPen.setColor(Qt::blue);
+
+    needScaleSetup = true;
 }
 
 GraphingWindow::~GraphingWindow()
@@ -82,6 +84,7 @@ void GraphingWindow::updatedFrames(int numFrames)
         //there shouldn't be any need to actually remove the graphs.
         //regenerate them instead
         ui->graphingView->clearGraphs(); //temporarily remove the graphs from the graph view
+        needScaleSetup = true;
         for (int i = 0; i < graphParams.count(); i++)
         {
             createGraph(graphParams[i], false); //regenerate each one
@@ -225,6 +228,9 @@ void GraphingWindow::removeSelectedGraph()
     graphParams.removeAt(idx);
 
     ui->graphingView->removeGraph(ui->graphingView->selectedGraphs().first());
+
+    if (graphParams.count() == 0) needScaleSetup = true;
+
     ui->graphingView->replot();
   }
 }
@@ -255,6 +261,7 @@ void GraphingWindow::removeAllGraphs()
 {
   ui->graphingView->clearGraphs();
   graphParams.clear();
+  needScaleSetup = true;
   ui->graphingView->replot();
 }
 
@@ -425,9 +432,13 @@ void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam)
     graphPen.setWidth(1);
     ui->graphingView->graph()->setPen(graphPen);
 
-    ui->graphingView->xAxis->setRange(xminval, xmaxval);
-    ui->graphingView->yAxis->setRange(yminval, ymaxval);
-    ui->graphingView->axisRect()->setupFullAxesBox();
+    if (needScaleSetup)
+    {
+        needScaleSetup = false;
+        ui->graphingView->xAxis->setRange(xminval, xmaxval);
+        ui->graphingView->yAxis->setRange(yminval, ymaxval);
+        ui->graphingView->axisRect()->setupFullAxesBox();
+    }
 
     ui->graphingView->replot();
 }

graphingwindow.h

@@ -55,6 +55,7 @@ private:
     QVector<CANFrame> *modelFrames;
     QList<GraphParams> graphParams;
     QPen selectedPen;
+    bool needScaleSetup; //do we need to set x,y graphing extents?s
 
     void showParamsDialog(int idx);
 };