Re: Custom GtkHeaderBar

[Takao Fujiwara <tfujiwar redhat com>]

On 04/18/17 02:52, cecashon aol com-san wrote:
> If I use
>
> gtk_style_context_add_class(context, "header");

As I replied, I fixed that problem to call this.get_style_context().remove_class("csd") after 
set_titlebar(header) is called.

Fujiwara

> The background drawn to the event box window is transparent on my computer. I just used "menu" to test a 
> different color from the theme but there are
> many that you can test. The style classes are at the bottom of the documentation page.
>
> https://developer.gnome.org/gtk3/stable/GtkStyleContext.html
>
> I painted the main window green so that I could see if the event box window gets drawn to and also to 
> distinguish widgets that don't have windows like
> the GtkLabel, GtkBox and GtkGrid.
>
> Another option is to have a CSS file for the header widget and use that although then you get away from using 
> the users theme. I have tried using the
> deprecated function
>
> gtk_style_context_get_background_color()
>
> to peak at if there is a constant background color set and what it might be but that function isn't going to 
> work for a gradient or image so it is
> only a partial solution for checking the style class background.
>
> Still trying to figure out these things myself.
>
> Eric