Since the later gtk_style_context_add_class doesn't care about the order
of the style classes, we can as well just prepend style classes to the
list and avoid the squared behavior when appending to a linked list.
Explain where the adjustment comes from, clarify some of the wording
about how its fields influence the scrollbar, and also note that the
steppers may not be present, since they aren’t in our default themes.
If the child added is not a Scrollable, it gets wrapped in a ViewPort –
which is. So it is impossible to end up with a non-Scrollable child.
Just check we have /any/ child where needed, which is semantically nicer
https://bugzilla.gnome.org/show_bug.cgi?id=778853
• intro: Clarify that external policy and/or adjustments can be used.
• add(): Don’t waffle on about having to add a ViewPort since we handle
that transparently for the user, so they can add() any widget.
• Adjustment stuff: most of this was repeating the docs for Scrollbar,
so just refer the user to that. Also, mention how
policies NEVER and EXTERNAL interact with all this.
https://bugzilla.gnome.org/show_bug.cgi?id=778853
has_tooltip_widget was assigned twice in immediate succession.
return_value is not used anywhere else in this function since commit
14a864c8b5 and does not need a default
value anymore, so move it to the inner scope and don't init to NULL.
hide_tooltip gets overriden in any case 2 lines down, and return_value
isn't used later in that function. The second assignment was introduced
in ef1da5f6c2, directly below the first
assignment.
shade/alpha/mix() take colour(s) and a number that is the ratio by which
to transform them. It was written here that these shall be passed in the
order (number, colour). That was wrong: they must be passed in the order
(colour[s], number) to work, and for the Inspector not to flag an error.
gtk_shader_builder_add_define should check both define_name and
define_value for not-NULL and not-empty, but the second precondition
check checks define_name again for not-empty-ness.
If you set GTK_INSPECTOR_RENDERER to the same type of
values that GSK_RENDERER takes this can change the renderer
used for the inspector. This is useful if you're debugging
one renderer and don't want to affect the inspector.
