Re: How can I retrieve gtk style context information from textview widget class without a textview widget?

[Colomban Wendling <lists ban herbesfolles org>]

Hi,

Le 12/06/2015 14:04, Friedrich Beckmann wrote:
> I would like to use the style information from the textview widget in
> another context. I want to retrieve the text foreground color and the
> background color as it would be used in a textview widget and use
> this style information for rendering inside a drawing area. […]
>
> […]
>
> Is there a way to retrieve this information of the background-color
> similar to the class mechanism? I would need the same style context
> as if I was in a textview widget.

Don't take my words as gospel, but there's something:

First, realize that you can't reliably achieve the same look as the
theme by simply picking background and foreground colors: the theme
might be using gradients, images and whatnot.
If you want to paint it like a text view, you should probably use the
GTK rendering functions, like gtk_render_background() and
gtk_render_layout().

Then, if you don't have an actual GtkTextView to get the style context
from, you'll need to create it yourself faking the one a true text view
would have.  You can probably do that relatively easily with
gtk_style_context_new() and then setting an appropriate widget path with
gtk_style_context_set_path() -- and possibly appropriate classes, as you
already figured out.

Regards,
Colomban


https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-render-background
https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-render-layout
https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-style-context-new
https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-style-context-set-path