[chronojump/FS-TFT-Menu] CairoBarsArrow class to manage free arrow on bars

[Xavier Padullés <xpadulles src gnome org>]

commit ed8597db91354db77bef374cbefeb18ce3fbf8ae
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Mar 25 14:09:40 2022 +0100

    CairoBarsArrow class to manage free arrow on bars

 src/gui/cairo/bars.cs | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
---
diff --git a/src/gui/cairo/bars.cs b/src/gui/cairo/bars.cs
index 92ed581e4..c4dbff51a 100644
--- a/src/gui/cairo/bars.cs
+++ b/src/gui/cairo/bars.cs
@@ -1484,3 +1484,32 @@ public class CairoBarsGuideManage
                get { return l; }
        }
 }
+
+// ----
+//note x0pos, x1pos are the pos (meaning the bar)
+public class CairoBarsArrow
+{
+       public int x0pos;
+       public double y0;
+       public int x1pos;
+       public double y1;
+
+       public CairoBarsArrow (int x0pos, double y0, int x1pos, double y1)
+       {
+               this.x0pos = x0pos;
+               this.y0 = y0;
+               this.x1pos = x1pos;
+               this.y1 = y1;
+               //LogB.Information(string.Format("x0pos: {0}, x1pos: {1}", x0pos, x1pos));
+       }
+
+       public double GetX0Graph (List<double> barsXCenter_l)
+       {
+               return barsXCenter_l[barsXCenter_l.Count -1 -x0pos];
+       }
+
+       public double GetX1Graph (List<double> barsXCenter_l)
+       {
+               return barsXCenter_l[barsXCenter_l.Count -1 -x1pos];
+       }
+}