[chronojump] trying jumpsDjOptimalFall ButtonPressEvent AddEvents only on creation

[Xavier de Blas <xaviblas src gnome org>]

commit 67bde5f26e4ab6f070ef59f4744593076a34320d
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Sep 3 15:21:31 2020 +0200

    trying jumpsDjOptimalFall ButtonPressEvent AddEvents only on creation

 src/gui/app1/jumpsDjOptimalFall.cs  | 4 ++++
 src/gui/cairo/jumpsDjOptimalFall.cs | 3 +++
 src/gui/cairo/xy.cs                 | 5 +++++
 3 files changed, 12 insertions(+)
---
diff --git a/src/gui/app1/jumpsDjOptimalFall.cs b/src/gui/app1/jumpsDjOptimalFall.cs
index 75d538dd..f1aa3765 100644
--- a/src/gui/app1/jumpsDjOptimalFall.cs
+++ b/src/gui/app1/jumpsDjOptimalFall.cs
@@ -105,8 +105,12 @@ public partial class ChronoJumpWindow
        }
        private void on_drawingarea_jumps_dj_optimal_fall_expose_event (object o, ExposeEventArgs args) 
        {
+               /*
+                  moved to creation:
+
                //needed to have mouse clicks at: on_drawingarea_jumps_weight_fv_profile_button_press_event ()
                drawingarea_jumps_dj_optimal_fall.AddEvents((int) (Gdk.EventMask.ButtonPressMask | 
Gdk.EventMask.ButtonReleaseMask));
+               */
 
                jumpsDjOptimalFallDo(false); //do not calculate data
                //data is calculated on switch page (at notebook_capture_analyze) or on change person
diff --git a/src/gui/cairo/jumpsDjOptimalFall.cs b/src/gui/cairo/jumpsDjOptimalFall.cs
index 6e54c1d4..ae2f6c00 100644
--- a/src/gui/cairo/jumpsDjOptimalFall.cs
+++ b/src/gui/cairo/jumpsDjOptimalFall.cs
@@ -66,6 +66,9 @@ public class JumpsDjOptimalFallGraph : CairoXY
                yVariable = heightStr;
                xUnits = "cm";
                yUnits = "cm";
+
+               //needed to have mouse clicks at: on_drawingarea_jumps_weight_fv_profile_button_press_event ()
+               area.AddEvents((int) (Gdk.EventMask.ButtonPressMask | Gdk.EventMask.ButtonReleaseMask));
        }
 
        public override void Do()
diff --git a/src/gui/cairo/xy.cs b/src/gui/cairo/xy.cs
index 0ec558b7..bc30e1b8 100644
--- a/src/gui/cairo/xy.cs
+++ b/src/gui/cairo/xy.cs
@@ -514,18 +514,23 @@ public abstract class CairoXY
                writeTextAtRight(line +1, "Y: " + Util.TrimDecimals(realY, 2), false);
                */
 
+               LogB.Information("calling findClosestGraphPoint ...");
                // 3) find closest point (including predicted point if any)
                PointF pClosest = findClosestGraphPoint(graphX, graphY);
 
+               LogB.Information("writeSelectedValues ...");
                // 4) write text at right
                writeSelectedValues(line, pClosest);
 
+               LogB.Information("painting rectangle ...");
+               // 4) write text at right
                // 5) paint rectangle around that point
                g.Color = bluePlots;
                g.Rectangle(calculatePaintX(pClosest.X) - 2*pointsRadius, calculatePaintY(pClosest.Y) 
-2*pointsRadius,
                                4*pointsRadius, 4*pointsRadius);
                g.Stroke();
                g.Color = black;
+               LogB.Information("writeCoordinatesOfMouseClick done!");
        }
 
        /*