Re: Decorating scales
- From: Yu Feng <rainwoodman gmail com>
- To: Matthias Clasen <matthias clasen gmail com>
- Cc: gtk-devel-list <gtk-devel-list gnome org>
- Subject: Re: Decorating scales
- Date: Tue, 06 Jan 2009 00:41:34 -0500
Hi,
If GtkRange were a gtk container perhaps using gtk_container_xxx with
child_properties will be an alternative. GtkContainer also has bettern
granularity - the programmers can modify/remove each marker
individually.
Unfortunately it isn't a Container.
Regards,
Yu
On Tue, 2009-01-06 at 00:31 -0500, Matthias Clasen wrote:
> Over the Christmas vacation, I spent a day adding marks to scales. The
> motivation for this came from the new sound preferences capplet, which
> uses a GtkHScale for balance control. Jon did a nice job of adding
> Left/Right labels (see the screenshot), but what is really missing
> here is an easy to hit midpoint.
>
> So I wrote a patch for GtkRange and GtkScale that allows to add
> 'marks' to certain values. When dragging the scale over one of these
> marked values, there is a little resistance that makes it easy to
> select the exact value. The api also allows to
> show a label or icon next to the mark.
> http://bugzilla.gnome.org/attachment.cgi?id=125318&action=view shows
> the
> various possibilities.
>
> I'd like to get this functionality into 2.16, if nobody objects, but
> I'm not entirely sure that I have managed to come up with the best
> possible api for this yet:
>
>
> +void gtk_scale_add_mark (GtkScale *scale,
> + gdouble value,
> + GtkPositionType position);
> +void gtk_scale_add_mark_text (GtkScale *scale,
> + gdouble value,
> + GtkPositionType position,
> + const gchar *markup);
> +void gtk_scale_add_mark_icon (GtkScale *scale,
> + gdouble value,
> + GtkPositionType position,
> + GIcon *icon);
> +void gtk_scale_clear_marks (GtkScale *scale);
>
>
> Feedback appreciated, Matthias
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