+ adjustScrollingWrapped(evt);
+ return;
+ }
+
+ ViewportRanges ranges = av.getRanges();
+
+ if (evt.getSource() == hscroll)
+ {
+ int oldX = ranges.getStartRes();
+ int oldwidth = ranges.getViewportWidth();
+ int x = hscroll.getValue();
+ int width = getSeqPanel().seqCanvas.getWidth() / av.getCharWidth();
+
+ // if we're scrolling to the position we're already at, stop
+ // this prevents infinite recursion of events when the scroll/viewport
+ // ranges values are the same
+ if ((x == oldX) && (width == oldwidth))
+ {
+ return;
+ }
+ ranges.setViewportStartAndWidth(x, width);
+ }
+ else if (evt.getSource() == vscroll)
+ {
+ int oldY = ranges.getStartSeq();
+ int oldheight = ranges.getViewportHeight();
+ int y = vscroll.getValue();
+ int height = getSeqPanel().seqCanvas.getHeight() / av.getCharHeight();
+
+ // if we're scrolling to the position we're already at, stop
+ // this prevents infinite recursion of events when the scroll/viewport
+ // ranges values are the same
+ if ((y == oldY) && (height == oldheight))