This commit refactors the colors_rgb example to implement the Widget
trait on mutable references to the app and its sub-widgets. This allows
the app to update its state while it is being rendered.
Additionally the main and run functions are refactored to be similar to
the other recent examples. This uses a pattern where the App struct has
a `run` method that takes a terminal as an argument, and the main
function is in control of initializing and restoring the terminal and
installing the error hooks.
This PR adds `Color::from_hsl` that returns a valid `Color::Rgb`.
```rust
let color: Color = Color::from_hsl(360.0, 100.0, 100.0);
assert_eq!(color, Color::Rgb(255, 255, 255));
let color: Color = Color::from_hsl(0.0, 0.0, 0.0);
assert_eq!(color, Color::Rgb(0, 0, 0));
```
HSL stands for Hue (0-360 deg), Saturation (0-100%), and Lightness
(0-100%) and working with HSL the values can be more intuitive. For
example, if you want to make a red color more orange, you can change the
Hue closer toward yellow on the color wheel (i.e. increase the Hue).
Related #763
Added convenience functions left_aligned(), centered() and
right_aligned() plus unit tests. Updated example code.
Signed-off-by: Eelco Empting <me@eelco.de>
This PR adds:
- subjectively better-looking list example
- change list example to a todo list example
- status of a TODO can be changed, further info can be seen under the list.
This adds for table:
- Added new flex method with flex field
- Deprecated segment_size method and removed segment_size field
- Updated documentation
- Updated tests
This is a somewhat arbitrary size for the layout cache based on adding
the columns and rows on my laptop's terminal (171+51 = 222) and doubling
it for good measure and then adding a bit more to make it a round
number. This gives enough entries to store a layout for every row and
every column, twice over, which should be enough for most apps. For
those that need more, the cache size can be set with
`Layout::init_cache()`.
Fixes: https://github.com/ratatui-org/ratatui/issues/820
In table.rs
- added scrollbar to the table
- colors changed to use style::palette::tailwind
- now colors can be changed with keys (l or →) for the next color, (h or
←) for the previous color
- added a footer for key info
For table.tape
- typing speed changed to 0.75s from 0.5s
- screen size changed to fit
- pushed keys changed to show the current example better
Fixes: https://github.com/ratatui-org/ratatui/issues/800
The current `List` example will unselect and reset the position of a
list.
This PR will save the last selected item, and updates `List` to honor
its offset, preventing the list from resetting when the user
`unselect()`s a `StatefulList`.
Fixes#758, fixes#801
This PR adds:
- `style` and `alignment` to `Text`
- impl `Widget` for `Text`
- replace `Text` manual draw to call for Widget impl
All places that use `Text` have been updated and support its new
features expect paragraph which still has a custom implementation.
Adds `proportional`, `symmetric`, `left`, `right`, `top`, and `bottom`
constructors for Padding struct.
Proportional is
```
/// **NOTE**: Terminal cells are often taller than they are wide, so to make horizontal and vertical
/// padding seem equal, doubling the horizontal padding is usually pretty good.
```
Fixes: https://github.com/ratatui-org/ratatui/issues/798
This uses the new `spacing` feature of the `Layout` struct to allocate
columns spacing in the `Table` widget.
This changes the behavior of the table column layout in the following
ways:
1. Selection width is always allocated.
- if a user does not want a selection width ever they should use
`HighlightSpacing::Never`
2. Column spacing is prioritized over other constraints
- if a user does not want column spacing, they should use
`Table::new(...).column_spacing(0)`
---------
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
This PR adds the
[`McGugan`](https://www.willmcgugan.com/blog/tech/post/ceo-just-wants-to-draw-boxes/)
border set, which allows for tighter borders.
For example, with the `flex` example you can get this effect (top is
mcgugan wide, bottom is mcgugan tall):
<img width="759" alt="image"
src="https://github.com/ratatui-org/ratatui/assets/1813121/756bb50e-f8c3-4eec-abe8-ce358058a526">
<img width="759" alt="image"
src="https://github.com/ratatui-org/ratatui/assets/1813121/583485ef-9eb2-4b45-ab88-90bd7cb14c54">
As of this PR, `MCGUGAN_WIDE` has to be styled manually, like so:
```rust
let main_color = color_for_constraint(*constraint);
let cell = buf.get_mut(block.x, block.y + 1);
cell.set_style(Style::reset().fg(main_color).reversed());
let cell = buf.get_mut(block.x, block.y + 2);
cell.set_style(Style::reset().fg(main_color).reversed());
let cell = buf.get_mut(block.x + block.width.saturating_sub(1), block.y + 1);
cell.set_style(Style::reset().fg(main_color).reversed());
let cell = buf.get_mut(block.x + block.width.saturating_sub(1), block.y + 2);
cell.set_style(Style::reset().fg(main_color).reversed());
```
`MCGUGAN_TALL` has to be styled manually, like so:
```rust
let main_color = color_for_constraint(*constraint);
for x in block.x + 1..(block.x + block.width).saturating_sub(1) {
let cell = buf.get_mut(x, block.y);
cell.set_style(Style::reset().fg(main_color).reversed());
let cell = buf.get_mut(x, block.y + block.height - 1);
cell.set_style(Style::reset().fg(main_color).reversed());
}
```
Issue: https://github.com/ratatui-org/ratatui/issues/816
This PR adds:
`std::fmt::Display` for `Text`, `Line`, and `Span` structs.
Display implementation displays actual content while ignoring style.
This commit adds `scroll` to the flex example. It also adds more examples to showcase how constraints interact. It improves the UI to make it easier to understand and short terminal friendly.
<img width="380" alt="image" src="https://github.com/ratatui-org/ratatui/assets/1813121/30541efc-ecbe-4e28-b4ef-4d5f1dc63fec"/>
---------
Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>
```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.
This PR adds a new way to space elements in a `Layout`.
Loosely based on
[flexbox](https://css-tricks.com/snippets/css/a-guide-to-flexbox/), this
PR adds a `Flex` enum with the following variants:
- Start
- Center
- End
- SpaceAround
- SpaceBetween
<img width="380" alt="image" src="https://github.com/ratatui-org/ratatui/assets/1813121/b744518c-eae7-4e35-bbc4-fe3c95193cde">
It also adds two more variants, to make this backward compatible and to
make it replace `SegmentSize`:
- StretchLast (default in the `Flex` enum, also behavior matches old
default `SegmentSize::LastTakesRemainder`)
- Stretch (behavior matches `SegmentSize::EvenDistribution`)
The `Start` variant from above matches `SegmentSize::None`.
This allows `Flex` to be a complete replacement for `SegmentSize`, hence
this PR also deprecates the `segment_size` constructor on `Layout`.
`SegmentSize` is still used in `Table` but under the hood `segment_size`
maps to `Flex` with all tests passing unchanged.
I also put together a simple example for `Flex` layouts so that I could
test it visually, shared below:
https://github.com/ratatui-org/ratatui/assets/1813121/c8716c59-493f-4631-add5-feecf4bd4e06
TableState, ListState, and ScrollbarState can now be serialized and deserialized
using serde.
```rust
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
struct AppState {
list_state: ListState,
table_state: TableState,
scrollbar_state: ScrollbarState,
}
let app_state = AppState::default();
let serialized = serde_json::to_string(app_state);
let app_state = serde_json::from_str(serialized);
```
