MeasureTool, partialmeasure on mousestop, use 'immediate'

[adube]

Current behavior

Currently, the MeasureTool widget do partial measures on single click.

Issue

If you want to measure a specific size, you can't unless you take a guess.

Solution

It would be nice to have an option to enable partial measures on mouse stop.

[adube]

Well, the OpenLayers.Control.Measure already have an "immediate" property exactly for that.

[adube]

Fixed in r1231, featuring :

• new 'immediate' option used to set the according OpenLayers.Control.Measure property
• defaults to 'true', which change the default widget behavior, but since it's commonly wished to do so it's okay to do that.

Done.

[adube]

When using 'immediate' option, when closing the tooltip, it reappears immediatly. It sometimes become in the way.

[adube]

r1233, featuring : bigger offset for partial measure tooltip. It's less in the way like that.