Don't render random tag values with `--labels main`

[BudgieInWA]

I want to be able to render a map with only labels for feature names (or equivalent). When I use --labels main, I also get unwanted random tag values (from the is_writable list): usually survey:date dates all over the place.

I was able to fix it with these lines at https://github.com/enzet/map-machine/blob/1f4fb66c85720476b7a30138b0da51a10d6a48e8/map_machine/scheme.py#L609

  def construct_text(
          self, tags: Tags, processed: set[str], label_mode: LabelMode
      ) -> list[Label]:
          """Construct labels for not processed tags."""
          texts: list[Label] = self.text_constructor.construct_text(
              tags, processed, label_mode
          )

+         if label_mode == LabelMode.MAIN:
+             return texts

          for tag in tags:
              if self.is_writable(tag, tags[tag]) and tag not in processed:
                  texts.append(
                      Label(
                          tags[tag],
                          self.get_color("text_color"),
                          self.get_color("text_outline_color"),
                      )
                  )
          return texts

[enzet]

Yes, you're right.

Patch looks good for me. Do you want to create pull request or should I fix it myself?

[BudgieInWA]

You can do it yourself however is easiest. :)

[enzet]

Hello, @BudgieInWA. I think I've fixed this issue, but will continue with the #67.

Can I close this?