use super::*;
pub struct Button<'a> {
sense: &'a mut Sense,
clicked: bool,
inner: Box<dyn Widget + 'a>,
f: Option<Box<dyn FnMut() + 'a>>,
}
impl<'a> Button<'a> {
pub fn new(cx: &'a Controller, text: &str) -> Self {
let sense: &'a mut Sense = cx.get_state();
let text = Text::new(
text.to_owned(),
cx.theme().font.clone(),
cx.theme().text_size,
if sense.is_hovered() {
cx.theme().hover_color
} else {
cx.theme().usable_color
},
)
.shrink(if sense.is_captured() {
cx.theme().press_ratio as f64
} else {
0.0
});
let mut ui = stack![text];
if sense.is_hovered() {
ui.push(Box::new(
ColorBox::new(cx.theme().hover_color)
.constraints_override(Constraints {
min_size: vec2(0.0, 1.0),
flex: vec2(1.0, 0.0),
})
.flex_align(vec2(Some(0.0), Some(0.0)), vec2(0.5, 0.0)),
));
}
Self {
clicked: sense.take_clicked(),
sense,
inner: Box::new(ui),
f: None,
}
}
pub fn was_clicked(&self) -> bool {
self.clicked
}
}
impl Widget for Button<'_> {
fn sense(&mut self) -> Option<&mut Sense> {
Some(self.sense)
}
fn calc_constraints(&mut self, cx: &ConstraintsContext) -> Constraints {
cx.get_constraints(&self.inner)
}
fn walk_children_mut(&mut self, f: &mut dyn FnMut(&mut dyn Widget)) {
f(&mut self.inner);
}
fn layout_children(&mut self, cx: &mut LayoutContext) {
cx.set_position(&self.inner, cx.position);
}
fn handle_event(&mut self, event: &Event) {
#![allow(unused_variables)]
if let Some(f) = &mut self.f {
if self.sense.take_clicked() {
f();
}
}
}
}