[GRASS-dev] [GRASS GIS] #3044: d.northarrow: transparent color does not work

[GRASS GIS]

#3044: d.northarrow: transparent color does not work
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  Reporter:  annakrat    |      Owner:  grass-dev@…
      Type:  defect      |     Status:  new
  Priority:  normal      |  Milestone:  7.0.5
 Component:  Default     |    Version:  unspecified
Resolution:              |   Keywords:  d.northarrow, cartography, gsoc2016
       CPU:              |   Platform:  All
  Unspecified            |
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Comment (by lazaa):

 Replying to [comment:1 wenzeslaus]:
 > When the fill color is set to transparent (`fill_color=none`) in the
 G7:d.northarrow, it is rendered as `black`.
 >
 > {{{
 > d.northarrow style=arrow1 at=85.0,25.0 color=30:144:255 fill_color=none
 > }}}
 >
 > Support for transparency, would increase the number of style options. I
 can see how even transparent line color would potentially create some
 interesting options as well.
 >
 > Other modules support that but if it is too difficult to implement, the
 transparent option should be removed.

 It looks that D_parse_color() returns same value both for input string
 "black" and "none". Could you provide me an example of module where
 transparency is already implemented?

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3044#comment:2>
GRASS GIS <https://grass.osgeo.org>