[Freeciv-Dev] (PR#4561) track the overview location statically

["Jason Short" <jshort@xxxxxxxxxxxxxx>]

The attached patch changes the time when the overview window location is 
calculated.  Instead of recalculating it each time, we only change it when 
center_tile_mapcanvas is called.

Mostly this is a cleanup.  It does reduce the number of times this code is 
executed, but this is insignificant.  It cuts out a little bit of wrapper 
code.  Finally, it potentially allows the overview to be recentered a 
little more intelligently - for instance we could try recentering only when 
necessary.

As before, gui-mui and gui-sdl do not use the mapview_common overview 
functions.  All other GUIs are supported.

jason

map_overview_x0.diff
Description: map_overview_x0.diff