Updates the requirements on [termwiz](https://github.com/wez/wezterm) to
permit the latest version.
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This PR makes a number of simplifications to the layout and constraint
features that were added after v0.25.0.
For users upgrading from v0.25.0, the net effect of this PR (along with
the other PRs) is the following:
- New `Flex` modes have been added.
- `Flex::Start` (new default)
- `Flex::Center`
- `Flex::End`
- `Flex::SpaceAround`
- `Flex::SpaceBetween`
- `Flex::Legacy` (old default)
- `Min(v)` grows to allocate excess space in all `Flex` modes instead of
shrinking (except in `Flex::Legacy` where it retains old behavior).
- `Fill(1)` grows to allocate excess space, growing equally with
`Min(v)`.
---
The following contains a summary of the changes in this PR and the
motivation behind them.
**`Flex`**
- Removes `Flex::Stretch`
- Renames `Flex::StretchLast` to `Flex::Legacy`
**`Constraint`**
- Removes `Fixed`
- Makes `Min(v)` grow as much as possible everywhere (except
`Flex::Legacy` where it retains the old behavior)
- Makes `Min(v)` grow equally as `Fill(1)` while respecting `Min` lower
bounds. When `Fill` and `Min` are used together, they both fill excess
space equally.
Allowing `Min(v)` to grow still allows users to build the same layouts
as before with `Flex::Start` with no breaking changes to the behavior.
This PR also removes the unstable feature `SegmentSize`.
This is a breaking change to the behavior of constraints. If users want
old behavior, they can use `Flex::Legacy`.
```rust
Layout::vertical([Length(25), Length(25)]).flex(Flex::Legacy)
```
Users that have constraint that exceed the available space will probably
not see any difference or see an improvement in their layouts. Any
layout with `Min` will be identical in `Flex::Start` and `Flex::Legacy`
so any layout with `Min` will not be breaking.
Previously, `Table` used `EvenDistribution` internally by default, but
with that gone the default is now `Flex::Start`. This changes the
behavior of `Table` (for the better in most cases). The only way for
users to get exactly the same as the old behavior is to change their
constraints. I imagine most users will be happier out of the box with
the new Table default.
Resolves https://github.com/ratatui-org/ratatui/issues/843
Thanks to @joshka for the direction
Follow up to https://github.com/ratatui-org/ratatui/pull/783
This PR introduces different priorities for each kind of constraint.
This PR also adds tests that specifies this behavior. This PR resolves a
number of broken tests.
Fixes https://github.com/ratatui-org/ratatui/issues/827
With this PR, the layout algorithm will do the following in order:
1. Ensure that all the segments are within the user provided area and
ensure that all segments and spacers are aligned next to each other
2. if a user provides a `layout.spacing`, it will enforce it.
3. ensure proportional elements are all proportional to each other
4. if a user provides a `Fixed(v)` constraint, it will enforce it.
5. `Min` / `Max` binding inequality constraints
6. `Length`
7. `Percentage`
8. `Ratio`
9. collapse `Min` or collapse `Max`
10. grow `Proportional` as much as possible
11. grow spacers as much as possible
This PR also returns the spacer areas as `Rects` to the user. Users can
then draw into the spacers as they see fit (thanks @joshka for the
idea). Here's a screenshot with the modified flex example:
<img width="569" alt="image"
src="https://github.com/ratatui-org/ratatui/assets/1813121/46c8901d-882c-43b0-ba87-b1d455099d8f">
This PR introduces a `strengths` module that has "default" weights that
give stable solutions as well as predictable behavior.
Implemented functions that convert Span into a
left-/center-/right-aligned Line. Implemented unit tests.
Closes#853
---------
Signed-off-by: Eelco Empting <me@eelco.de>
- Used a few new techniques from the 0.26 features (ref widgets, text rendering,
dividers / padding etc.)
- Updated the app to a simpler application approach
- Use color_eyre
- Make it look pretty (colors, new proportional borders)
---------
Fixes https://github.com/ratatui-org/ratatui/issues/819
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
- colored gauges
- removed box borders
- show the difference between ratio / percentage and unicode / no unicode better
- better application approach (consistent with newer examples)
- various changes for 0.26 featuers
- impl `Widget` for `&App`
- use color_eyre
for gauge.tape
- change to get better output from the new code
---------
Fixes: https://github.com/ratatui-org/ratatui/issues/846
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
Removes the part about squashing commits from the CONTRIBUTING file.
We no longer require that because github squashes commits when merging.
This will cleanup the CONTRIBUTING file a bit which is already quite
dense.
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
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.
