JAL-2609 enabled (still broken/incomplete) fast paint

diff --git a/src/jalview/gui/SeqCanvas.java b/src/jalview/gui/SeqCanvas.java
index 3b0d717..373389d 100755 (executable)
--- a/src/jalview/gui/SeqCanvas.java
+++ b/src/jalview/gui/SeqCanvas.java
@@ -215,12 +215,16 @@ public class SeqCanvas extends JComponent implements ViewportListenerI
          * draw scale value, justified, with half a character width
          * separation from the sequence data
          */
-        int justify = fm.stringWidth(String.valueOf(value)) + charWidth;
+        String valueAsString = String.valueOf(value);
+        int justify = fm.stringWidth(valueAsString) + charWidth;
         int xpos = left ? labelWidthWest - justify + charWidth / 2
                 : getWidth() - justify - charWidth / 2;
 
-        g.drawString(String.valueOf(value), xpos, (ypos + (i * charHeight))
-                - (charHeight / 5));
+        g.setColor(Color.white);
+        int y = (ypos + (i * charHeight)) - (charHeight / 5);
+        g.fillRect(xpos, y, justify, charHeight);
+        g.setColor(Color.black);
+        g.drawString(valueAsString, xpos, y);
       }
     }
   }
@@ -1186,7 +1190,7 @@ public class SeqCanvas extends JComponent implements ViewportListenerI
    */
   protected void fastPaintWrapped(int scrollX)
   {
-    if (Math.abs(scrollX) > 0 /*av.getRanges().getViewportWidth()*/)
+    if (Math.abs(scrollX) > av.getRanges().getViewportWidth())
     {
       /*
        * shift of more than one view width is too much
@@ -1299,11 +1303,11 @@ public class SeqCanvas extends JComponent implements ViewportListenerI
 
         if (av.getScaleLeftWrapped())
         {
-          // drawVerticalScale(gg, xpos, xpos + viewportWidth, y, true);
+          drawVerticalScale(gg, xpos, xpos + viewportWidth, y, true);
         }
         if (av.getScaleRightWrapped())
         {
-          // drawVerticalScale(gg, xpos, xpos + viewportWidth, y, false);
+          drawVerticalScale(gg, xpos, xpos + viewportWidth, y, false);
         }
 
         y += repeatHeight;