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use crate::{types::Vector2, Layout, Rect, Ui};
use std::borrow::Cow;
pub struct Button<'a> {
position: Option<Vector2>,
size: Option<Vector2>,
label: Cow<'a, str>,
}
impl<'a> Button<'a> {
pub fn new<S>(label: S) -> Button<'a>
where
S: Into<Cow<'a, str>>,
{
Button {
position: None,
size: None,
label: label.into(),
}
}
pub fn position<P: Into<Option<Vector2>>>(self, position: P) -> Self {
let position = position.into();
Button { position, ..self }
}
pub fn size(self, size: Vector2) -> Self {
Button {
size: Some(size),
..self
}
}
pub fn ui(self, ui: &mut Ui) -> bool {
let context = ui.get_active_window_context();
let size = self
.size
.unwrap_or(Vector2::new(self.label.len() as f32 * 10. + 5., 14.));
let pos = context
.window
.cursor
.fit(size, self.position.map_or(Layout::Vertical, Layout::Free));
let rect = Rect::new(pos.x, pos.y, size.x as f32, size.y as f32);
let hovered = rect.contains(context.input.mouse_position);
context.window.draw_list.draw_rect(
rect,
None,
context.global_style.button_background(
context.focused,
hovered,
hovered && context.input.is_mouse_down,
),
);
context.window.draw_list.draw_label(
&self.label,
pos + Vector2::new(
context.global_style.margin_button,
context.global_style.margin_button,
),
Some(context.global_style.text(context.focused)),
);
context.focused && hovered && context.input.click_up
}
}
impl Ui {
pub fn button<P: Into<Option<Vector2>>>(&mut self, position: P, label: &str) -> bool {
Button::new(label).position(position).ui(self)
}
}