Re: Replacement for gtk_widget_override_background_color() with GtkTextView

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On Fri, 2015-02-13 at 14:50 +0000, Emmanuele Bassi wrote:
> hi;
> 
> On 11 February 2015 at 13:08, Murray Cumming <murrayc@xxxxxxxxxxx> wrote:
> > The gtk_widget_override_*() functions were recently deprecated:
> > https://git.gnome.org/browse/gtk+/commit/?id=63efdca2
> > (These had themselves replaced gtk_widget_modify_*():
> > https://git.gnome.org/browse/gtk+/commit/?id=f383e6b0 )
> >
> > I'd like to improve the deprecation documentation to give more exact
> > clues about what people should do.
> 
> there are two ways to replace gtk_widget_modify_background_color() —
> though, obviously, the actual reply would be "don't":

I too would discourage it in almost all cases but there are legitimate
uses in specialist applications.

>  • you can either provide a fragment of CSS to style the widget yourself
>  • you can override the GtkWidget::draw signal, and paint the color
> yourself using Cairo
> 
> > But I don't know what CSS would replace
> > gtk_widget_override_background_color() for a GtkTextView. If I use
> > "background-color: #whatever" then only the background of the content's
> > text is colored, not the background of the whole area.
> 
> what does "the whole area" mean, in this context? the text view may
> have some margin, which does not get painted with the background
> color, as per CSS spec.
> 
> if you want to paint the area beneath the margin, you'll have to draw
> on the parent widget, not on the GtkTextView.

These screenshots show the difference. Additionally, on the
obviously-wrong one, the text wrapping also changes during every mouse
over.

However, while getting these screenshots I noticed that the change is
caused by different GTK+ versions, regardless of what API I use. I'll
try to narrow down what caused the change and file a bug.

Thanks.

-- 
Murray Cumming
murrayc@xxxxxxxxxxx
www.murrayc.com

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