rui/views/
geom.rs

1use crate::*;
2use std::any::Any;
3
4/// Struct for the `geom` modifier.
5pub struct Geom<V, F> {
6    child: V,
7    func: F,
8}
9
10impl<V, F> View for Geom<V, F>
11where
12    V: View,
13    F: Fn(&mut Context, LocalSize, LocalToWorld) + 'static,
14{
15    fn process(
16        &self,
17        event: &Event,
18        id: ViewId,
19        cx: &mut Context,
20        actions: &mut Vec<Box<dyn Any>>,
21    ) {
22        self.child.process(event, id.child(&0), cx, actions);
23    }
24
25    fn draw(&self, id: ViewId, args: &mut DrawArgs) {
26        let rect = args.cx.layout[&id].rect;
27        (self.func)(args.cx, rect.size, args.vger.current_transform());
28        self.child.draw(id.child(&0), args);
29    }
30
31    fn layout(&self, id: ViewId, args: &mut LayoutArgs) -> LocalSize {
32        let sz = self.child.layout(id.child(&0), args);
33
34        args.cx.layout.insert(
35            id,
36            LayoutBox {
37                rect: LocalRect::new(LocalPoint::zero(), sz),
38                offset: LocalOffset::zero(),
39            },
40        );
41
42        sz
43    }
44
45    fn dirty(&self, id: ViewId, xform: LocalToWorld, cx: &mut Context) {
46        self.child.dirty(id.child(&0), xform, cx);
47    }
48
49    fn hittest(&self, id: ViewId, pt: LocalPoint, cx: &mut Context) -> Option<ViewId> {
50        self.child.hittest(id.child(&0), pt, cx)
51    }
52
53    fn commands(&self, id: ViewId, cx: &mut Context, cmds: &mut Vec<CommandInfo>) {
54        self.child.commands(id.child(&0), cx, cmds)
55    }
56
57    fn gc(&self, id: ViewId, cx: &mut Context, map: &mut Vec<ViewId>) {
58        map.push(id);
59        self.child.gc(id.child(&0), cx, map)
60    }
61
62    fn access(
63        &self,
64        id: ViewId,
65        cx: &mut Context,
66        nodes: &mut Vec<(accesskit::NodeId, accesskit::Node)>,
67    ) -> Option<accesskit::NodeId> {
68        self.child.access(id.child(&0), cx, nodes)
69    }
70}
71
72impl<V, F> private::Sealed for Geom<V, F> {}
73
74impl<V, F> Geom<V, F>
75where
76    V: View,
77    F: Fn(&mut Context, LocalSize, LocalToWorld) + 'static,
78{
79    pub fn new(child: V, f: F) -> Self {
80        Self { child, func: f }
81    }
82}
rui/views/geom.rs

rui/views/
geom.rs
