# Changelog
## To be released
## v0.6.2 - 2019-07-16
### Added
* `Text` implements PartialEq
### Fixed
* Avoid overflow errors in canvas
## v0.6.1 - 2019-06-16
### Fixed
* Avoid a division by zero when all values in a barchart are equal to 0.
* Fix the inverted cursor position in the curses backend.
* Ensure that the correct terminal size is returned when using the crossterm
backend.
* Avoid highlighting the separator after the selected item in the Tabs widget.
## v0.6.0 - 2019-05-18
### Changed
* Update crossterm backend
## v0.5.1 - 2019-04-14
### Fixed
* Fix a panic in the Sparkline widget
## v0.5.0 - 2019-03-10
### Added
* Add a new curses backend (with Windows support thanks to `pancurses`).
* Add `Backend::get_cursor` and `Backend::set_cursor` methods to query and
set the position of the cursor.
* Add more constructors to the `Crossterm` backend.
* Add a demo for all backends using a shared UI and application state.
* Add `Ratio` as a new variant of layout `Constraint`. It can be used to define
exact ratios constraints.
### Changed
* Add support for multiple modifiers on the same `Style` by changing `Modifier`
from an enum to a bitflags struct.
So instead of writing:
```rust
let style = Style::default().modifier(Modifier::Italic);
```
one should use:
```rust
let style = Style::default().modifier(Modifier::ITALIC);
// or
### Fixed
* Ensure correct behavoir of the alternate screens with the `Crossterm` backend.
* Fix out of bounds panic when two `Buffer` are merged.
## v0.4.0 - 2019-02-03
### Added
* Add a new canvas shape: `Rectangle`.
* Official support of `Crossterm` backend.
* Make it possible to choose the divider between `Tabs`.
* Add word wrapping on Paragraph.
* The gauge widget accepts a ratio (f64 between 0 and 1) in addition of a
percentage.
### Changed
* Upgrade to Rust 2018 edition.
### Fixed
* Fix rendering of double-width characters.
* Fix race condition on the size of the terminal and expose a size that is
safe to use when drawing through `Frame::size`.
* Prevent unsigned int overflow on large screens.
## v0.3.0 - 2018-11-04
### Added
* Add experimental test backend
## v0.3.0-beta.3 - 2018-09-24
### Changed
* `show_cursor` is called when `Terminal` is dropped if the cursor is hidden.
## v0.3.0-beta.2 - 2018-09-23
### Changed
* Remove custom `termion` backends. This is motivated by the fact that
`termion` structs are meant to be combined/wrapped to provide additional
functionalities to the terminal (e.g AlternateScreen, Mouse support, ...).
Thus providing exclusive types do not make a lot of sense and give a false
hint that additional features cannot be used together. The recommended
approach is now to create your own version of `stdout`:
```rust
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
```
and then to create the corresponding `termion` backend:
```rust
let backend = TermionBackend::new(stdout);
```
The resulting code is more verbose but it works with all combinations of
additional `termion` features.
## v0.3.0-beta.1 - 2018-09-08
### Changed
* Replace `Item` by a generic and flexible `Text` that can be used in both
`Paragraph` and `List` widgets.
* Remove unecessary borrows on `Style`.
## v0.3.0-beta.0 - 2018-09-04
### Added
* Add a basic `Crossterm` backend
### Changed
* Remove `Group` and introduce `Layout` in its place
- `Terminal` is no longer required to compute a layout
- `Size` has been renamed `Constraint`
* Widgets are rendered on a `Frame` instead of a `Terminal` in order to
avoid mixing `draw` and `render` calls
* `draw` on `Terminal` expects a closure where the UI is built by rendering
widgets on the given `Frame`
* Update `Widget` trait
- `draw` takes area by value
- `render` takes a `Frame` instead of a `Terminal`
* All widgets use the consumable builder pattern
* `SelectableList` can have no selected item and the highlight symbol is hidden
in this case
* Remove markup langage inside `Paragraph`. `Paragraph` now expects an iterator
of `Text` items
## v0.2.3 - 2018-06-09
### Added
* Add `start_corner` option for `List`
* Add more text aligment options for `Paragraph`
## v0.2.2 - 2018-05-06
### Added
* `Terminal` implements `Debug`
### Changed
* Use `FnOnce` instead of `FnMut` in Group::render
## v0.2.1 - 2018-04-01
### Added
* Add `AlternateScreenBackend` in `termion` backend
* Add `TermionBackend::with_stdout` in order to let an user of the library
provides its own termion struct
* Add tests and documentation for `Buffer::pos_of`
* Remove leading whitespaces when wrapping text
### Fixed
* Fix `debug_assert` in `Buffer::pos_of`
* Pass the style of `SelectableList` to the underlying `List`
* Fix missing character when wrapping text
* Fix panic when specifying layout constraints
## v0.2.0 - 2017-12-26
### Added
* Add `MouseBackend` in `termion` backend to handle scroll and mouse events
* Add generic `Item` for items in a `List`
### Changed
* Rename `TermionBackend` to `RawBackend` (to distinguish it from the `MouseBackend`)
* Generic parameters for `List` to allow passing iterators as items
* Generic parameters for `Table` to allow using iterators as rows and header
* Generic parameters for `Tabs`
* Rename `border` bitflags to `Borders`
* Run latest `rustfmt` on all sources
### Removed
* Drop `log4rs` as a dev-dependencies in favor of `stderrlog`