1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
use helix_core::Position;
use helix_view::{
graphics::{CursorKind, Rect},
Editor,
};
use tui::buffer::Buffer;
use crate::compositor::{Component, Context, Event, EventResult};
/// Contains a component placed in the center of the parent component
pub struct Overlay<T> {
/// Child component
pub content: T,
/// Function to compute the size and position of the child component
pub calc_child_size: Box<dyn Fn(Rect) -> Rect>,
}
/// Surrounds the component with a margin of 5% on each side, and an additional 2 rows at the bottom
pub fn overlaid<T>(content: T) -> Overlay<T> {
Overlay {
content,
calc_child_size: Box::new(|rect: Rect| rect.overlaid()),
}
}
impl<T: Component + 'static> Component for Overlay<T> {
fn render(&mut self, area: Rect, frame: &mut Buffer, ctx: &mut Context) {
let dimensions = (self.calc_child_size)(area);
self.content.render(dimensions, frame, ctx)
}
fn required_size(&mut self, (width, height): (u16, u16)) -> Option<(u16, u16)> {
let area = Rect {
x: 0,
y: 0,
width,
height,
};
let dimensions = (self.calc_child_size)(area);
let viewport = (dimensions.width, dimensions.height);
let _ = self.content.required_size(viewport)?;
Some((width, height))
}
fn handle_event(&mut self, event: &Event, ctx: &mut Context) -> EventResult {
self.content.handle_event(event, ctx)
}
fn cursor(&self, area: Rect, ctx: &Editor) -> (Option<Position>, CursorKind) {
let dimensions = (self.calc_child_size)(area);
self.content.cursor(dimensions, ctx)
}
fn id(&self) -> Option<&'static str> {
self.content.id()
}
}
|
