GWT charts without JSNI, plugins, or server round-trips

The main idea behind GChart is simple: You can make very nice charts efficiently out of a reasonably small number of 1-cell Grids (for the aligned labels) and (empty) Images (for everything else), styled and positioned appropriately on an AbsolutePanel. Not surprisingly, bar charts don't suffer at all under the limitations imposed by this strategy--but (as long as you don't mind using dotted connecting lines or banded-filled pie slices) line and pie charts also do remarkably well