pogmommy/eww
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Implement multiple classes on a single element, and fix changing class names (fixes #70)

Browse source
This commit is contained in:
elkowar 2020-12-09 19:19:19 +01:00
parent f83fc4d969
commit 9d817268d7
1 changed files with 34 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
src/widgets/widget_definitions.rs
View file

@ -53,7 +53,18 @@ pub(super) fn resolve_widget_attrs(bargs: &mut BuilderArgs, gtk_widget: &gtk::Wi
resolve_block!(bargs, gtk_widget, {
// @prop class - css class name
prop(class: as_string) { gtk_widget.get_style_context().add_class(&class) },
prop(class: as_string) {
let old_classes = gtk_widget.get_style_context().list_classes();
let old_classes = old_classes.iter().map(|x| x.as_str()).collect::<Vec<&str>>();
let new_classes = class.split(' ').collect::<Vec<_>>();
let (missing, new) = list_difference(&old_classes, &new_classes);
for class in missing {
gtk_widget.get_style_context().remove_class(class);
}
for class in new {
gtk_widget.get_style_context().add_class(class);
}
},
// @prop valign - how to align this vertically. possible values: $alignment
prop(valign: as_string) { gtk_widget.set_valign(parse_align(&valign)?) },
// @prop halign - how to align this horizontally. possible values: $alignment
@ -445,3 +456,25 @@ fn connect_first_map<W: IsA<gtk::Widget>, F: Fn(&W) + 'static>(widget: &W, func:
}
});
}
/// Compute the difference of two lists, returning a tuple of
/// (
/// elements that where in a but not in b,
/// elements that where in b but not in a
/// ).
fn list_difference<'a, 'b, T: PartialEq>(a: &'a [T], b: &'b [T]) -> (Vec<&'a T>, Vec<&'b T>) {
let mut missing = Vec::new();
for elem in a {
if !b.contains(elem) {
missing.push(elem);
}
}
let mut new = Vec::new();
for elem in b {
if !a.contains(elem) {
new.push(elem);
}
}
(missing, new)
}