[chronojump] CairoBars alternative line is now linepoint

[Xavier de Blas <xaviblas src gnome org>]

commit 5ec0a7141f64b97fb19f081b4e629e551e8d9eb0
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Mar 23 16:42:58 2022 +0100

    CairoBars alternative line is now linepoint

 src/gui/cairo/bars.cs | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)
---
diff --git a/src/gui/cairo/bars.cs b/src/gui/cairo/bars.cs
index f4a8f8720..683dfc195 100644
--- a/src/gui/cairo/bars.cs
+++ b/src/gui/cairo/bars.cs
@@ -485,7 +485,6 @@ public abstract class CairoBars : CairoGeneric
        protected abstract void plotBars ();
 
        /*TODO: note line should not hide the numbers in bars */
-       /*TODO: falta el punt (no només línia)*/
        protected void plotAlternativeLine (List<double> dataSecondary_l)
        {
                //be safe
@@ -493,7 +492,8 @@ public abstract class CairoBars : CairoGeneric
                        return;
 
                g.SetSourceColor(yellow); //to have contrast with the bar
-               g.LineWidth = 2;
+
+               // 1) lines
                bool firstDone = false;
                for (int i = 0 ; i < barsXCenter_l.Count; i ++)
                {
@@ -509,8 +509,21 @@ public abstract class CairoBars : CairoGeneric
                                g.LineTo(barsXCenter_l[i], y);
                }
                g.Stroke();
+
+               // 2) points
+               int pointsRadius = 4;
+               for (int i = 0 ; i < barsXCenter_l.Count; i ++)
+               {
+                       double y = calculatePaintY (dataSecondary_l[dataSecondary_l.Count -1 -i],
+                                       MathUtil.GetMax (dataSecondary_l),
+                                       0);//MathUtil.GetMin (dataSecondary_l));
+
+                       g.Arc(barsXCenter_l[i], y, pointsRadius, 0.0, 2.0 * Math.PI); //full circle
+                       g.FillPreserve();
+                       g.Stroke();
+               }
+
                g.SetSourceColor(black);
-               g.LineWidth = 1;
        }
 
        //adapted from http://www.mono-project.com/docs/tools+libraries/libraries/Mono.Cairo/cookbook/