35606a3daa
We only rely on some of the rendering primitives and implement our Cursive-style compositor on top.
36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
use crate::buffer::Buffer;
|
|
use crate::layout::Rect;
|
|
use crate::widgets::Widget;
|
|
|
|
/// A widget to to clear/reset a certain area to allow overdrawing (e.g. for popups)
|
|
///
|
|
/// # Examples
|
|
///
|
|
/// ```
|
|
/// # use helix_tui::widgets::{Clear, Block, Borders};
|
|
/// # use helix_tui::layout::Rect;
|
|
/// # use helix_tui::Frame;
|
|
/// # use helix_tui::backend::Backend;
|
|
/// fn draw_on_clear<B: Backend>(f: &mut Frame<B>, area: Rect) {
|
|
/// let block = Block::default().title("Block").borders(Borders::ALL);
|
|
/// f.render_widget(Clear, area); // <- this will clear/reset the area first
|
|
/// f.render_widget(block, area); // now render the block widget
|
|
/// }
|
|
/// ```
|
|
///
|
|
/// # Popup Example
|
|
///
|
|
/// For a more complete example how to utilize `Clear` to realize popups see
|
|
/// the example `examples/popup.rs`
|
|
#[derive(Debug, Clone)]
|
|
pub struct Clear;
|
|
|
|
impl Widget for Clear {
|
|
fn render(self, area: Rect, buf: &mut Buffer) {
|
|
for x in area.left()..area.right() {
|
|
for y in area.top()..area.bottom() {
|
|
buf.get_mut(x, y).reset();
|
|
}
|
|
}
|
|
}
|
|
}
|