Polygon with no fill legend

[zanollim]

I have a simple polygon layer with no fill color/pattern, defined as follows:

[...]
TYPE POLYGON
STYLE
  WIDTH 5
  OUTLINECOLOR 0 0 0
END
[...]

If I request the legend through cgi mode=legendicon, the returned image is a line legend icon (see line_legend.png). Why not a polygon legend icon (see polygon_legend.png)? I think that if the layer is TYPE POLYGON, the associated legend has to be a polygon legend.

[tbonfort]

This behavior was added in r2172. Steve, do you remember what the use-case was for this, do we want to keep it ?

[sdlime]

Man, that was a long time ago. My use case was probably public land survey data (townships and sections) which are always polygon data but always rendered as line work. In that context the line legend icon makes more sense. It's still a relevant use case since you want polygon labeling but line rendering so you have to use TYPE POLYGON. I'd argue that the line legend representation is more appropriate in many cases.

Still I can see why we'd want to support both. I've thought it might be nice to support a legendshape in addition to the legendicon. The shape could be given in pecentages 0,0 is UL and 100,100 is LR. That way a user could override the default legend icon shape. Just an idea.

Steve