remember smoothing across restarts

fixes #18

src/AllPlot.cpp

@@ -191,7 +191,7 @@ AllPlot::AllPlot(QWidget *parent, MainWindow *mainWindow):
     settings(NULL),
     unit(0),
     rideItem(NULL),
-    smooth(30), bydist(false),
+    bydist(false),
     shade_zones(true),
     showPowerState(0),
     showHrState(Qt::Checked),
@@ -204,6 +204,10 @@ AllPlot::AllPlot(QWidget *parent, MainWindow *mainWindow):
 
     useMetricUnits = (unit.toString() == "Metric");
 
+    smooth = settings->value(GC_RIDE_PLOT_SMOOTHING).toInt();
+    if (smooth < 2)
+        smooth = 30;
+
     // create a background object for shading
     bg = new AllPlotBackground(this);
     bg->attach(this);
@@ -659,6 +663,8 @@ void
 AllPlot::setSmoothing(int value)
 {
     smooth = value;
+    boost::shared_ptr<QSettings> settings = GetApplicationSettings();
+    settings->setValue(GC_RIDE_PLOT_SMOOTHING, value);
     recalc();
 }
 

src/Settings.h

@@ -30,6 +30,7 @@
 #define GC_SETTINGS_SPLITTER_SIZES  "mainwindow/splitterSizes"
 #define GC_SETTINGS_CALENDAR_SIZES  "mainwindow/calendarSizes"
 #define GC_SETTINGS_INTERVAL_METRICS "rideSummaryWindow/intervalMetrics"
+#define GC_RIDE_PLOT_SMOOTHING       "ridePlot/Smoothing"
 #define GC_SETTINGS_INTERVAL_METRICS_DEFAULT "workout_time,total_distance,total_work,average_power,skiba_xpower,max_power,average_hr,ninety_five_percent_hr,average_cad,average_speed"
 #define GC_DATETIME_FORMAT          "ddd MMM dd, yyyy, hh:mm AP"
 #define GC_UNIT                     "unit"