Consensus is that explicit imports make it easier to understand the
example code. This commit removes the prelude import from all examples
and replaces it with the necessary imports, and expands other glob
imports (widget::*, Constraint::*, KeyCode::*, etc.) everywhere else.
Prelude glob imports not in examples are not covered by this PR.
See https://github.com/ratatui-org/ratatui/issues/1150 for more details.
`crossterm`, `termion`, and `termwiz` can now be accessed as
`ratatui::{crossterm, termion, termwiz}` respectively. This makes it
possible to just add the Ratatui crate as a dependency and use the
backend of choice without having to add the backend crates as
dependencies.
To update existing code, replace all instances of `crossterm::` with
`ratatui::crossterm::`, `termion::` with `ratatui::termion::`, and
`termwiz::` with `ratatui::termwiz::`.
Using reset is clearer to me what actually happens. On the other case a
struct is created to override the old one completely which basically
does the same in a less clear way.
- Simplify `assert_buffer_eq!` logic.
- Deprecate `assert_buffer_eq!`.
- Introduce `TestBackend::assert_buffer_lines`.
Also simplify many tests involving buffer comparisons.
For the deprecation, just use `assert_eq` instead of `assert_buffer_eq`:
```diff
-assert_buffer_eq!(actual, expected);
+assert_eq!(actual, expected);
```
---
I noticed `assert_buffer_eq!` creating no test coverage reports and
looked into this macro. First I simplified it. Then I noticed a bunch of
`assert_eq!(buffer, …)` and other indirect usages of this macro (like
`TestBackend::assert_buffer`).
The good thing here is that it's mainly used in tests so not many
changes to the library code.
`Block::bordered()` is shorter than
`Block::new().borders(Borders::ALL)`, requires one less import
(`Borders`) and in case `Block::default()` was used before can even be
`const`.
Fixes many not yet enabled lints (mostly pedantic) on everything that is
not the lib (examples, benchs, tests). Therefore, this is not containing
anything that can be a breaking change.
Lints are not enabled as that should be the job of #974. I created this
as a separate PR as its mostly independent and would only clutter up the
diff of #974 even more.
Also see
https://github.com/ratatui-org/ratatui/pull/974#discussion_r1506458743
---------
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
In a recent commit we added Rec::split, but this feels more ergonomic as
Layout::areas. This also adds Layout::spacers to get the spacers between
the areas.
Simplified a bunch of the logic in the demo2 example
- Moved destroy mode to its own file.
- Moved error handling to its own file.
- Removed AppContext
- Implemented Widget for &App. The app state is small enough that it
doesn't matter here and we could just copy or clone the app state on
every frame, but for larger apps this can be a significant performance
improvement.
- Made the tabs stateful
- Made the term module just a collection of functions rather than a
struct.
- Changed to use color_eyre for error handling.
- Changed keyboard shortcuts and rearranged the bottom bar.
- Use strum for the tabs enum.
Many widgets can be rendered without changing their state.
This commit implements The `Widget` trait for references to
widgets and changes their implementations to be immutable.
This allows us to render widgets without consuming them by passing a ref
to the widget when calling `Frame::render_widget()`.
```rust
// this might be stored in a struct
let paragraph = Paragraph::new("Hello world!");
let [left, right] = area.split(&Layout::horizontal([20, 20]));
frame.render_widget(¶graph, left);
frame.render_widget(¶graph, right); // we can reuse the widget
```
Implemented for all widgets except BarChart (which has an implementation
that modifies the internal state and requires a rewrite to fix.
Other widgets will be implemented in follow up commits.
Fixes: https://github.com/ratatui-org/ratatui/discussions/164
Replaces PRs: https://github.com/ratatui-org/ratatui/pull/122 and
https://github.com/ratatui-org/ratatui/pull/16
Enables: https://github.com/ratatui-org/ratatui/issues/132
Validated as a viable working solution by:
https://github.com/ratatui-org/ratatui/pull/836
Added convenience functions left_aligned(), centered() and
right_aligned() plus unit tests. Updated example code.
Signed-off-by: Eelco Empting <me@eelco.de>
```shell
cargo run --example demo2 --features="crossterm widget-calendar"
```
Press `d` to activate destroy mode and Enjoy!
Vendors a copy of tui-big-text to allow us to use it in the demo.
Any iterator whose item is convertible into `Row` can now be
collected into a `Table`.
Where previously, `Table::new` accepted `IntoIterator<Item = Row>`, it
now accepts `IntoIterator<Item: Into<Row>>`.
BREAKING CHANGE:
The compiler can no longer infer the element type of the container
passed to `Table::new()`. For example, `Table::new(vec![], widths)`
will no longer compile, as the type of `vec![]` can no longer be
inferred.
This prevents creating a table that doesn't actually render anything.
Fixes: https://github.com/ratatui-org/ratatui/issues/537
BREAKING CHANGE: Table::new() now takes an additional widths parameter.
This allows passing an array, slice or Vec of constraints, which is more
ergonomic than requiring this to always be a slice.
The following calls now all succeed:
```rust
Table::new(rows).widths([Constraint::Length(5), Constraint::Length(5)]);
Table::new(rows).widths(&[Constraint::Length(5), Constraint::Length(5)]);
// widths could also be computed at runtime
let widths = vec![Constraint::Length(5), Constraint::Length(5)];
Table::new(rows).widths(widths.clone());
Table::new(rows).widths(&widths);
```
* feat(canvas): implement half block marker
A useful technique for the terminal is to use half blocks to draw a grid
of "pixels" on the screen. Because we can set two colors per cell, and
because terminal cells are about twice as tall as they are wide, we can
draw a grid of half blocks that looks like a grid of square pixels.
This commit adds a new `HalfBlock` marker that can be used in the Canvas
widget and the associated HalfBlockGrid.
Also updated demo2 to use the new marker as it looks much nicer.
Adds docs for many of the methods and structs on canvas.
Changes the grid resolution method to return the pixel count
rather than the index of the last pixel.
This is an internal detail with no user impact.
