[Freeciv-Dev] get_canvas_xy unification (PR#1054)

[Andreas Kemnade <akemnade@xxxxxxxxxxx>]

jdorje@xxxxxxxxxxxxxxxxxxxxx writes:
 > The attached patch makes a new common function, base_get_canvas_xy,
 > which is called by get_canvas_xy for each GUI platform.
 > 
 > There are several advantages to this: it reduces overall code,
 > consolidates places where changes will have to be made in the GUI, and
 > provides isometric-view capabilities to this function for all GUI's.
 > 
 > get_canvas_xy is kept around because the variables needed by
 > base_get_canvas_xy are not common.  But they should be.  I would propose
 > a naming system that is a cross between the win32 and gtk current
 > systems: map_view_x0/map_view_y0 for the top-left window corner,
 > map_win_width/map_win_height for the canvas width and height.  Currently
 > map_canvas_store_twidth/map_canvas_store_theight are used for the canvas
 > width in tiles; these are misnamed but I'm not sure what would be better
 > (map_win_twidth/map_win_theight, perhaps?).  This patch is a big step
 > toward an eventual total unification.
 > 
 > Platforms tested: gtk
 > Untested: xaw (I'll test shortly), win32, mui
Works on win32.

Greetings
Andreas Kemnade