[chronojump] horizontal lines on force sensor load

[Xavier de Blas <xaviblas src gnome org>]

commit d4d71c66157193041a5ca331ddcba99cae02895c
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Oct 25 00:32:10 2017 +0200

    horizontal lines on force sensor load

 src/forceSensor.cs     |    5 +++++
 src/gui/forceSensor.cs |   42 +++++++++++++++++++++++++++++++++++++-----
 2 files changed, 42 insertions(+), 5 deletions(-)
---
diff --git a/src/forceSensor.cs b/src/forceSensor.cs
index 855b807..7714903 100644
--- a/src/forceSensor.cs
+++ b/src/forceSensor.cs
@@ -68,6 +68,11 @@ public class ForceSensorCapturePoints
                                        ));
        }
 
+       public int GetForceInPx(double force)
+       {
+               return Convert.ToInt32( (heightG/2) - ( force * heightG / RealHeightG) );
+       }
+
        private Gdk.Point getLastPoint()
        {
                return Points[Points.Count -1];
diff --git a/src/gui/forceSensor.cs b/src/gui/forceSensor.cs
index 340e2f8..2cc7624 100644
--- a/src/gui/forceSensor.cs
+++ b/src/gui/forceSensor.cs
@@ -74,13 +74,22 @@ public partial class ChronoJumpWindow
        bool portFSOpened;
 
        Gdk.GC pen_black_force_capture;
+       Gdk.GC pen_gray_force_capture;
+       Pango.Layout layout_force_text;
 
 
-       private void pen_black_force_init()
+       private void force_graphs_init()
        {
                pen_black_force_capture = new Gdk.GC(force_capture_drawingarea.GdkWindow);
                pen_black_force_capture.Foreground = UtilGtk.BLACK;
-               //pen_black_force_capture.SetLineAttributes (2, Gdk.LineStyle.Solid, Gdk.CapStyle.NotLast, 
Gdk.JoinStyle.Miter);
+               pen_black_force_capture.SetLineAttributes (2, Gdk.LineStyle.Solid, Gdk.CapStyle.NotLast, 
Gdk.JoinStyle.Miter);
+
+               pen_gray_force_capture = new Gdk.GC(force_capture_drawingarea.GdkWindow);
+               pen_gray_force_capture.Foreground = UtilGtk.GRAY;
+               pen_gray_force_capture.SetLineAttributes (1, Gdk.LineStyle.OnOffDash, Gdk.CapStyle.NotLast, 
Gdk.JoinStyle.Miter);
+
+               layout_force_text = new Pango.Layout (force_capture_drawingarea.PangoContext);
+               layout_force_text.FontDescription = Pango.FontDescription.FromString ("Courier 10");
        }
 
 
@@ -169,7 +178,7 @@ public partial class ChronoJumpWindow
                forceSensorOtherMessageShowSeconds = true;
 
                if(pen_black_force_capture == null)
-                       pen_black_force_init();
+                       force_graphs_init();
 
                if(o == (object) button_force_sensor_tare)
                {
@@ -726,12 +735,13 @@ public partial class ChronoJumpWindow
                UtilGtk.ErasePaint(force_capture_drawingarea, force_capture_pixmap);
 
                if(pen_black_force_capture == null)
-                       pen_black_force_init();
+                       force_graphs_init();
 
                List<string> contents = Util.ReadFileAsStringList(UtilEncoder.GetmifCSVFileName());
                bool headersRow = true;
                double maxForce = 0;
                double minForce = 0;
+               double lastForce = 0;
                foreach(string str in contents)
                {
                        if(headersRow)
@@ -744,6 +754,8 @@ public partial class ChronoJumpWindow
                                {
                                        double force = Convert.ToDouble(strFull[1]);
                                        fscPoints.Add(Convert.ToInt32(strFull[0]), force);
+
+                                       lastForce = force;
                                        if(force > maxForce)
                                                maxForce = force;
                                        if(force < minForce)
@@ -752,6 +764,13 @@ public partial class ChronoJumpWindow
                        }
                }
 
+               forcePaintHLine(0);
+               for(int i = 1; i <= 5 ; i ++)
+               {
+                       forcePaintHLine(100 * i);
+                       forcePaintHLine(-100 * i);
+               }
+
                Gdk.Point [] paintPoints = new Gdk.Point[fscPoints.Points.Count];
                for(int i = 0; i < fscPoints.Points.Count; i ++)
                        paintPoints[i] = fscPoints.Points[i];
@@ -759,11 +778,24 @@ public partial class ChronoJumpWindow
                force_capture_pixmap.DrawLines(pen_black_force_capture, paintPoints);
                force_capture_drawingarea.QueueDraw(); // -- refresh
 
-               label_force_sensor_value.Text = paintPoints[paintPoints.Length -1].Y.ToString();
+               label_force_sensor_value.Text = lastForce.ToString();
                label_force_sensor_value_max.Text = maxForce.ToString();
                label_force_sensor_value_min.Text = minForce.ToString();
        }
 
+       private void forcePaintHLine(int yForce)
+       {
+               int yPx = fscPoints.GetForceInPx(yForce);
+               force_capture_pixmap.DrawLine(pen_gray_force_capture,
+                               0, yPx, force_capture_drawingarea.Allocation.Width, yPx);
+
+               layout_force_text.SetMarkup(yForce.ToString());
+               int textWidth = 1;
+               int textHeight = 1;
+               layout_force_text.GetPixelSize(out textWidth, out textHeight);
+               force_capture_pixmap.DrawLayout (pen_gray_force_capture, 0, yPx, layout_force_text);
+       }
+
        private void on_button_force_sensor_image_save_clicked (object o, EventArgs args)
        {
                checkFile(Constants.CheckFileOp.FORCESENSOR_SAVE_IMAGE);