make zoom drag an area to zoom #8
Description
Build into the zoom control, a way to drag out an area to zoom, which then becomes full screen.
Zoom is already a draw command, so just measuring the difference between starting and ending the draw, is all that is needed. The draw area however should be larger than a minimum size, say 5x5 pixels.
This could use the existing selection tool, to avoid adding yet another selection view management object on top of that and marquee.