Description Alex Boyko 2008-01-03 10:52:25 EST

To reproduce
1. Create a Logic diagram
2. Put two rectangles on the diagram such that their y coordinates are approximately equal
3. Select both rectangles and drag them up off the diagram viewport and drop them there.
4. Try to select both rectangles with the selection tool's marquee rectangle.

Expected: should be able to select both rectangles by dragging the mouse bottom-up

Actual: selection tool fails to scroll the diagram up instead it scrolls it down to 0 y-coordinate when the marquee rectangle is about to go off the viewport.

Problem: there is a typo in SelectInDiagramHelper#exposeLocation(). If viewer needs to be scrolled to negative x or y location this negative x or y is assigned to 0 for some reason.