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JAL-147 corrected calculation of vertical scroll position and max
[jalview.git]
/
src
/
jalview
/
gui
/
AlignmentPanel.java
diff --git
a/src/jalview/gui/AlignmentPanel.java
b/src/jalview/gui/AlignmentPanel.java
index
9d21a6c
..
a732527
100644
(file)
--- a/
src/jalview/gui/AlignmentPanel.java
+++ b/
src/jalview/gui/AlignmentPanel.java
@@
-902,11
+902,14
@@
public class AlignmentPanel extends GAlignmentPanel implements
private void setScrollingForWrappedPanel(int topLeftColumn)
{
int scrollPosition = vpRanges.getWrappedScrollPosition(topLeftColumn);
private void setScrollingForWrappedPanel(int topLeftColumn)
{
int scrollPosition = vpRanges.getWrappedScrollPosition(topLeftColumn);
- int maxScroll = vpRanges.getWrappedScrollPosition(vpRanges
- .getVisibleAlignmentWidth() - 1);
+ int maxScroll = vpRanges.getWrappedMaxScroll(topLeftColumn);
+ /*
+ * a scrollbar's value can be set to at most (maximum-extent)
+ * so we add extent (1) to the maxScroll value
+ */
vscroll.setUnitIncrement(1);
vscroll.setUnitIncrement(1);
- vscroll.setValues(scrollPosition, 1, 0, maxScroll);
+ vscroll.setValues(scrollPosition, 1, 0, maxScroll + 1);
}
/**
}
/**