mirror of
https://github.com/ratatui-org/ratatui
synced 2024-11-22 04:33:13 +00:00
a23ecd9b45
Code which previously called `buf.get(x, y)` or `buf.get_mut(x, y)`
should now use index operators, or be transitioned to `buff.cell()` or
`buf.cell_mut()` for safe access that avoids panics by returning
`Option<&Cell>` and `Option<&mut Cell>`.
The new methods accept `Into<Position>` instead of `x` and `y`
coordinates, which makes them more ergonomic to use.
```rust
let mut buffer = Buffer::empty(Rect::new(0, 0, 10, 10));
let cell = buf[(0, 0)];
let cell = buf[Position::new(0, 0)];
let symbol = buf.cell((0, 0)).map(|cell| cell.symbol());
let symbol = buf.cell(Position::new(0, 0)).map(|cell| cell.symbol());
buf[(0, 0)].set_symbol("🐀");
buf[Position::new(0, 0)].set_symbol("🐀");
buf.cell_mut((0, 0)).map(|cell| cell.set_symbol("🐀"));
buf.cell_mut(Position::new(0, 0)).map(|cell| cell.set_symbol("🐀"));
```
The existing `get()` and `get_mut()` methods are marked as deprecated.
These are fairly widely used and we will leave these methods around on
the buffer for a longer time than our normal deprecation approach (2
major release)
Addresses part of: https://github.com/ratatui-org/ratatui/issues/1011
---------
Co-authored-by: EdJoPaTo <rfc-conform-git-commit-email@funny-long-domain-label-everyone-hates-as-it-is-too-long.edjopato.de>
42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
use ratatui::{
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backend::TestBackend,
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buffer::Buffer,
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style::{Color, Style},
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text::Span,
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widgets::canvas::Canvas,
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Terminal,
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};
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#[test]
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fn widgets_canvas_draw_labels() {
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let backend = TestBackend::new(5, 5);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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.draw(|f| {
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let label = String::from("test");
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let canvas = Canvas::default()
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.background_color(Color::Yellow)
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.x_bounds([0.0, 5.0])
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.y_bounds([0.0, 5.0])
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.paint(|ctx| {
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ctx.print(
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0.0,
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0.0,
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Span::styled(label.clone(), Style::default().fg(Color::Blue)),
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);
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});
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f.render_widget(canvas, f.area());
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})
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.unwrap();
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let mut expected = Buffer::with_lines(["", "", "", "", "test "]);
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for row in 0..5 {
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for col in 0..5 {
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expected[(col, row)].set_bg(Color::Yellow);
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}
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}
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for col in 0..4 {
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expected[(col, 4)].set_fg(Color::Blue);
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}
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terminal.backend().assert_buffer(&expected);
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}
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