We can delete sequence 0

[jalview.git] / src / jalview / appletgui / AlignmentPanel.java

diff --git a/src/jalview/appletgui/AlignmentPanel.java b/src/jalview/appletgui/AlignmentPanel.java
index 13eb06f..da55119 100755 (executable)
--- a/src/jalview/appletgui/AlignmentPanel.java
+++ b/src/jalview/appletgui/AlignmentPanel.java
@@ -1,6 +1,6 @@
 /*\r
  * Jalview - A Sequence Alignment Editor and Viewer\r
- * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
+ * Copyright (C) 2006 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
  *\r
  * This program is free software; you can redistribute it and/or\r
  * modify it under the terms of the GNU General Public License\r
@@ -40,7 +40,7 @@ public class AlignmentPanel extends Panel implements AdjustmentListener
   // this value is set false when selection area being dragged\r
   boolean fastPaint = true;\r
 \r
-  boolean MAC = false;\r
+\r
 \r
   public AlignmentPanel(AlignFrame af, final AlignViewport av)\r
   {\r
@@ -53,8 +53,6 @@ public class AlignmentPanel extends Panel implements AdjustmentListener
       e.printStackTrace();\r
     }\r
 \r
-    if(System.getProperty("os.name").startsWith("Mac"))\r
-      MAC = true;\r
 \r
     alignFrame = af;\r
     this.av = av;\r
@@ -347,6 +345,9 @@ public class AlignmentPanel extends Panel implements AdjustmentListener
     if(av.hasHiddenColumns)\r
      width = av.getColumnSelection().findColumnPosition(width);\r
 \r
+    av.setStartRes(x);\r
+    av.setStartSeq(y);\r
+\r
     av.setEndRes( (x + (seqPanel.seqCanvas.getSize().width / av.charWidth)) -1);\r
 \r
     hextent = seqPanel.seqCanvas.getSize().width / av.charWidth;\r
@@ -438,7 +439,7 @@ public class AlignmentPanel extends Panel implements AdjustmentListener
     int scrollX = av.startRes - oldX;\r
     int scrollY = av.startSeq - oldY;\r
 \r
-    if (av.getWrapAlignment() || !fastPaint || MAC)\r
+    if (av.getWrapAlignment() || !fastPaint || av.MAC)\r
     {\r
       repaint();\r
     }\r
@@ -488,13 +489,16 @@ public class AlignmentPanel extends Panel implements AdjustmentListener
       if (av.hasHiddenColumns)\r
         maxwidth = av.getColumnSelection().findColumnPosition(maxwidth) - 1;\r
 \r
-      int max = maxwidth /\r
-          seqPanel.seqCanvas.getWrappedCanvasWidth(seqPanel.seqCanvas.getSize().width) +\r
-          1;\r
+      int canvasWidth = seqPanel.seqCanvas.getWrappedCanvasWidth\r
+          (seqPanel.seqCanvas.getSize().width);\r
 \r
-      vscroll.setMaximum(max);\r
-      vscroll.setUnitIncrement(1);\r
-      vscroll.setVisibleAmount(1);\r
+      if(canvasWidth>0)\r
+      {\r
+        int max = maxwidth / canvasWidth;\r
+        vscroll.setMaximum(max);\r
+        vscroll.setUnitIncrement(1);\r
+        vscroll.setVisibleAmount(1);\r
+      }\r
     }\r
     else\r
     {\r