use crate::*;
use std::any::Any;
pub struct Hover<V, F> {
child: V,
func: F,
}
impl<V, F, A> Hover<V, F>
where
V: View,
F: Fn(&mut Context, bool) -> A + 'static,
{
pub fn new(v: V, f: F) -> Self {
Self { child: v, func: f }
}
}
impl<V, F, A> View for Hover<V, F>
where
V: View,
F: Fn(&mut Context, bool) -> A + 'static,
A: 'static,
{
fn process(
&self,
event: &Event,
vid: ViewId,
cx: &mut Context,
actions: &mut Vec<Box<dyn Any>>,
) {
if let Event::TouchMove { position, .. } = &event {
if cx.mouse_button.is_none() {
let inside = self.hittest(vid, *position, cx).is_some();
actions.push(Box::new((self.func)(cx, inside)));
}
}
self.child.process(event, vid.child(&0), cx, actions)
}
fn draw(&self, id: ViewId, args: &mut DrawArgs) {
self.child.draw(id.child(&0), args)
}
fn layout(&self, id: ViewId, args: &mut LayoutArgs) -> LocalSize {
self.child.layout(id.child(&0), args)
}
fn dirty(&self, id: ViewId, xform: LocalToWorld, cx: &mut Context) {
self.child.dirty(id.child(&0), xform, cx);
}
fn hittest(&self, id: ViewId, pt: LocalPoint, cx: &mut Context) -> Option<ViewId> {
self.child.hittest(id.child(&0), pt, cx)
}
fn commands(&self, id: ViewId, cx: &mut Context, cmds: &mut Vec<CommandInfo>) {
self.child.commands(id.child(&0), cx, cmds)
}
fn gc(&self, id: ViewId, cx: &mut Context, map: &mut Vec<ViewId>) {
self.child.gc(id.child(&0), cx, map)
}
fn access(
&self,
id: ViewId,
cx: &mut Context,
nodes: &mut Vec<(accesskit::NodeId, accesskit::Node)>,
) -> Option<accesskit::NodeId> {
self.child.access(id.child(&0), cx, nodes)
}
}
impl<V, F> private::Sealed for Hover<V, F> {}