[chronojump] RaceAnalyzer capture cairo graphs, better display of top meters data

[Xavier de Blas <xaviblas src gnome org>]

commit ca698d8e7053c74e4b4cb3d6d7c7d4f797c6b020
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Feb 10 12:21:45 2022 +0100

    RaceAnalyzer capture cairo graphs, better display of top meters data

 src/gui/cairo/generic.cs      |  3 +++
 src/gui/cairo/raceAnalyzer.cs | 17 +++++++++++++----
 2 files changed, 16 insertions(+), 4 deletions(-)
---
diff --git a/src/gui/cairo/generic.cs b/src/gui/cairo/generic.cs
index 59ec99c34..5ddf3b2c9 100644
--- a/src/gui/cairo/generic.cs
+++ b/src/gui/cairo/generic.cs
@@ -162,6 +162,9 @@ public abstract class CairoGeneric
        //this combined with printXAxisText is different on RaceAnalyzer
        protected virtual void paintVerticalGridLine(Cairo.Context g, int xtemp, string text, int fontH)
        {
+               if(fontH < 1)
+                       fontH = 1;
+
                g.MoveTo(xtemp, topMargin);
                g.LineTo(xtemp, graphHeight - bottomMargin);
 
diff --git a/src/gui/cairo/raceAnalyzer.cs b/src/gui/cairo/raceAnalyzer.cs
index 586492388..5d00f08f1 100644
--- a/src/gui/cairo/raceAnalyzer.cs
+++ b/src/gui/cairo/raceAnalyzer.cs
@@ -119,7 +119,7 @@ public class CairoGraphRaceAnalyzer : CairoXY
                                else {
                                        for(int i = 0 ; i < verticalLinesUs_2l.Count() ; i ++)
                                        {
-                                               string xTextTop = 
verticalLinesUs_2l.GetFromFirst(i).ToString() + "m";
+                                               string xTextTop = 
verticalLinesUs_2l.GetFromFirst(i).ToString();
 
                                                //seconds
                                                string xTextBottom = 
Util.TrimDecimals(verticalLinesUs_2l.GetFromSecond(i)/1000000.0, 1).ToString();
@@ -128,13 +128,14 @@ public class CairoGraphRaceAnalyzer : CairoXY
                                                g.Save();
                                                g.SetDash(new double[]{1, 2}, 0);
                                                if(verticalGridSep > 0)
-                                                       paintVerticalGridLine(g, Convert.ToInt32(xGraph), 
xTextBottom, textHeight);
+                                                       paintVerticalGridLine(g, Convert.ToInt32(xGraph), 
xTextBottom, textHeight-3);
                                                else
-                                                       paintVerticalGridLineTopBottom (g, 
Convert.ToInt32(xGraph), xTextTop, xTextBottom, textHeight);
+                                                       paintVerticalGridLineTopBottom (g, 
Convert.ToInt32(xGraph), xTextTop, xTextBottom, textHeight-3);
                                                g.Stroke ();
                                                g.Restore();
                                        }
                                }
+                               printXAxisTopText();
                        }
 
                        paintAxis();
@@ -166,7 +167,12 @@ public class CairoGraphRaceAnalyzer : CairoXY
        protected override void printXAxisText()
        {
                printText(graphWidth - outerMargin, graphHeight -Convert.ToInt32(.25 * outerMargin),
-                               0, textHeight, getXAxisLabel(), g, alignTypes.CENTER);
+                               0, textHeight, getXAxisLabel(), g, alignTypes.RIGHT);
+       }
+       private void printXAxisTopText()
+       {
+               printText(graphWidth - outerMargin, Convert.ToInt32(.5 * outerMargin),
+                               0, textHeight, getAxisLabel(distanceStr, "m"), g, alignTypes.RIGHT);
        }
 
        /*
@@ -180,6 +186,9 @@ public class CairoGraphRaceAnalyzer : CairoXY
 
        private void paintVerticalGridLineTopBottom (Cairo.Context g, int xtemp, string textTop, string 
textBottom, int fontH)
        {
+               if(fontH < 1)
+                       fontH = 1;
+
                g.MoveTo(xtemp, topMargin);
                g.LineTo(xtemp, graphHeight - bottomMargin);