From 20947b2cc413aba4422bf03466c5f4a60c23bd9b Mon Sep 17 00:00:00 2001
From: jprocter <jprocter@compbio.dundee.ac.uk>
Date: Wed, 29 Aug 2012 16:27:08 +0100
Subject: [PATCH] JAL-1153 JAL-1155 improved layout and allowed labels to
 rescale for grouped linegraphs

---
 src/jalview/gui/AnnotationLabels.java |   60 ++++++++++++++++++++++++---------
 1 file changed, 45 insertions(+), 15 deletions(-)

diff --git a/src/jalview/gui/AnnotationLabels.java b/src/jalview/gui/AnnotationLabels.java
index 6d32c04..665537c 100755
--- a/src/jalview/gui/AnnotationLabels.java
+++ b/src/jalview/gui/AnnotationLabels.java
@@ -23,6 +23,7 @@ import java.util.regex.Pattern;
 import java.awt.*;
 import java.awt.datatransfer.*;
 import java.awt.event.*;
+import java.awt.geom.AffineTransform;
 import java.awt.image.*;
 import javax.swing.*;
 
@@ -832,12 +833,16 @@ public class AnnotationLabels extends JPanel implements MouseListener,
     int x = 0;
     int graphExtras = 0;
     int offset = 0;
-
+    Font baseFont = g.getFont();
+    FontMetrics baseMetrics = fm;
+    int ofontH = fontHeight;
+    boolean visible = true;
     if (aa != null)
     {
       hasHiddenRows = false;
       for (int i = 0; i < aa.length; i++)
       {
+        visible = true;
         g.setColor(Color.black);
 
         if (!aa[i].visible)
@@ -870,30 +875,55 @@ public class AnnotationLabels extends JPanel implements MouseListener,
               groupSize++;
             }
           }
-
           if (groupSize * (fontHeight + 8) < aa[i].height)
           {
             graphExtras = (aa[i].height - (groupSize * (fontHeight + 8))) / 2;
           }
-
-          for (int gg = 0; gg < aa.length; gg++)
+          else
           {
-            if (aa[gg].graphGroup == aa[i].graphGroup)
+            // scale font to fit
+            float h = aa[i].height / (float) groupSize, s;
+            if (h < 9)
             {
-              x = width - fm.stringWidth(aa[gg].label) - 3;
-              g.drawString(aa[gg].label, x, y - graphExtras);
-              if (aa[gg].annotations[0] != null)
+              visible = false;
+            }
+            else
+            {
+              fontHeight = -8 + (int) h;
+              s = ((float) fontHeight) / (float) ofontH;
+              Font f = baseFont.deriveFont(AffineTransform
+                      .getScaleInstance(s, s));
+              g.setFont(f);
+              fm = g.getFontMetrics();
+              graphExtras = (aa[i].height - (groupSize * (fontHeight + 8))) / 2;
+            }
+          }
+          if (visible)
+          {
+            for (int gg = 0; gg < aa.length; gg++)
+            {
+              if (aa[gg].graphGroup == aa[i].graphGroup)
               {
-                g.setColor(aa[gg].annotations[0].colour);
+                x = width - fm.stringWidth(aa[gg].label) - 3;
+                g.drawString(aa[gg].label, x, y - graphExtras);
+                
+                if (aa[gg]._linecolour != null)
+                {
+
+                  g.setColor(aa[gg]._linecolour);
+                  g.drawLine(x, y - graphExtras + 3,
+                          x + fm.stringWidth(aa[gg].label), y - graphExtras
+                                  + 3);
+                }
+
+                g.setColor(Color.black);
+                graphExtras += fontHeight + 8;
               }
-
-              g.drawLine(x, y - graphExtras - 3,
-                      x + fm.stringWidth(aa[gg].label), y - graphExtras - 3);
-
-              g.setColor(Color.black);
-              graphExtras += fontHeight + 8;
             }
           }
+          g.setFont(baseFont);
+          fm = baseMetrics;
+          fontHeight = ofontH;
         }
         else
         {
-- 
1.7.10.2