Bug 363562

Description bugs 2011-11-11 04:38:48 EST

Build Identifier: org.eclipse.draw2d_3.6.2.v20110128-0100.jar

I have an application which uses the FreeformViewport via ScalableFreeformRootEditPart. If a figure is shown which has mostly negative coordinates an empty space is shown below or beside the figure. Also the scroll bars are incorrect displayed: even if the figure has the same size as the view port the scroll bars shows addition space and therefore allows scrolling.
I investigate the problem and found the possible cause: The new bounds might be calculated wrong in FreeformViewport.readjustScrollBars(). The bounds from the FreeformFigure and the client area are combined by an union operator reference the point 0/0 and the client's width and height, but the client's x/y should be used as reference. I could fix the problem by changing the union with "bounds.union(clientArea);"
I attached a drawing which visualize the problem.

Reproducible: Always

Steps to Reproduce:
1. Create an editor with a SclableFreeformRootEditPart
2. Place a figure with negative coordinates on the layer
3. Zoom to fit the figure on the page
4. check the scroll bars and its extend