JAL-2739 Change to updateLayout width calculation

diff --git a/src/jalview/gui/AlignmentPanel.java b/src/jalview/gui/AlignmentPanel.java
index ba9fc11..baac692 100644 (file)
--- a/src/jalview/gui/AlignmentPanel.java
+++ b/src/jalview/gui/AlignmentPanel.java
@@ -640,9 +640,9 @@ public class AlignmentPanel extends GAlignmentPanel implements
       }
       else
       {
-        int widthInRes = (canvasWidth / av.getCharWidth()) - 1;
+        int widthInRes = (canvasWidth / av.getCharWidth());
         int heightInSeq = (getSeqPanel().seqCanvas.getHeight()
-                / av.getCharHeight()) - 1;
+                / av.getCharHeight());
 
         vpRanges.setViewportWidth(widthInRes);
         vpRanges.setViewportHeight(heightInSeq);

diff --git a/test/jalview/gui/AlignmentPanelTest.java b/test/jalview/gui/AlignmentPanelTest.java
index b228ba1..2819dbf 100644 (file)
--- a/test/jalview/gui/AlignmentPanelTest.java
+++ b/test/jalview/gui/AlignmentPanelTest.java
@@ -21,6 +21,7 @@
 package jalview.gui;
 
 import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertNotEquals;
 
 import jalview.bin.Cache;
 import jalview.bin.Jalview;
@@ -218,4 +219,31 @@ public class AlignmentPanelTest
             .getAlignment().getWidth() - 1 - 21); // 21 is the number of hidden
                                                   // columns
   }
+
+  /**
+   * Test that update layout reverts to original (unwrapped) values for endRes
+   * and endSeq when switching from wrapped to unwrapped mode (JAL-2739)
+   */
+  @Test(groups = "Functional")
+  public void TestUpdateLayout_endRes()
+  {
+    // get details of original alignment dimensions
+    ViewportRanges ranges = af.getViewport().getRanges();
+    int endres = ranges.getEndRes();
+
+    // wrap
+    af.alignPanel.getAlignViewport().setWrapAlignment(true);
+    af.alignPanel.updateLayout();
+
+    // endRes changes
+    assertNotEquals(ranges.getEndRes(), endres);
+
+    // unwrap
+    af.alignPanel.getAlignViewport().setWrapAlignment(false);
+    af.alignPanel.updateLayout();
+
+    // endRes and endSeq back to original values
+    assertEquals(ranges.getEndRes(), endres);
+
+  }
 }