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113 lines
5.9 KiB
Markdown
113 lines
5.9 KiB
Markdown
# Cursive
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[](https://crates.io/crates/cursive)
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[](https://travis-ci.org/gyscos/Cursive)
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[](./LICENSE)
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[](https://gitter.im/cursive-rs/cursive)
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Cursive is a TUI (Text User Interface) library for rust. It is currently based on jeaye's [ncurses-rs](https://github.com/jeaye/ncurses-rs), but [other backends are available](https://github.com/gyscos/Cursive/wiki/Backends).
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It allows you to build rich user interfaces for terminal applications.
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# [Documentation](http://docs.rs/cursive)
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It is designed to be safe and easy to use:
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```toml
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[dependencies]
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cursive = "0.7"
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```
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Or to use the latest git version:
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```toml
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[dependencies]
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cursive = { git = "https://github.com/gyscos/Cursive" }
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```
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(You will also need ncurses installed - if it isn't already, check in your package manager. Make sure you install the `ncursesw` version if available, for UTF-8 support.)
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```rust,no_run
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extern crate cursive;
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use cursive::Cursive;
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use cursive::views::{Dialog, TextView};
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fn main() {
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// Creates the cursive root - required for every application.
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let mut siv = Cursive::new();
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// Creates a dialog with a single "Quit" button
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siv.add_layer(Dialog::around(TextView::new("Hello Dialog!"))
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.title("Cursive")
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.button("Quit", |s| s.quit()));
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// Starts the event loop.
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siv.run();
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}
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```
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[](examples/dialog.rs)
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Check out the other [examples](https://github.com/gyscos/Cursive/tree/master/examples) to get these results, and more:
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<div>
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<a href="examples/edit.rs"><img src="doc/examples/edit.png" alt="edit.rs example", width="48%" /></a>
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<a href="examples/lorem.rs"><img src="doc/examples/lorem.png" alt="lorem.rs example", width="48%" /></a>
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<a href="examples/menubar.rs"><img src="doc/examples/menubar.png" alt="menubar.rs example", width="48%" /></a>
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<a href="examples/select.rs"><img src="doc/examples/select.png" alt="select.rs example", width="48%" /></a>
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<a href="examples/mines/"><img src="doc/examples/mines.png" alt="mines example", width="48%" /></a>
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<a href="examples/theme.rs"><img src="doc/examples/theme.png" alt="theme.rs example", width="48%" /></a>
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</div>
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_(Colors may depend on your terminal configuration.)_
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## Tutorials
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These tutorials may help you get started with cursive:
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* [Starting with cursive: (1/3)](https://github.com/gyscos/Cursive/tree/master/doc/tutorial_1.md)
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* [Starting with cursive: (2/3)](https://github.com/gyscos/Cursive/tree/master/doc/tutorial_2.md)
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* [Starting with cursive: (3/3)](https://github.com/gyscos/Cursive/tree/master/doc/tutorial_3.md)
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## Third-party views
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Here are a few crates implementing new views for you to use:
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* [cursive_table_view](https://github.com/BonsaiDen/cursive_table_view)
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* [cursive_calendar_view](https://github.com/BonsaiDen/cursive_calendar_view)
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* [cursive_tree_view](https://github.com/BonsaiDen/cursive_tree_view)
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## Goals
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* **Ease of use.** Simple apps should be simple. Complex apps should be manageable.
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* **Linux TTY Compatibility.** Colors may suffer, and UTF-8 may be too much, but most features *must* work properly on a Linux TTY.
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* **Flexibility.** This library should be able to handle simple UI scripts, complex real-time applications, or even games.
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* In particular, it tries to have enough features to recreate these kind of tools:
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* [menuconfig](http://en.wikipedia.org/wiki/Menuconfig#/media/File:Linux_x86_3.10.0-rc2_Kernel_Configuration.png)
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* [nmtui](https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Configure_a_Network_Team_Using_the_Text_User_Interface_nmtui.html)
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## _Non_-goals
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* **Extreme performance.** This is a simple layout library, guys, not [compiz](https://www.google.com/search?q=compiz&tbm=isch) piped into [libcaca](https://www.google.com/search?q=libcaca&tbm=isch). Unless you are running it on your microwave's microcontroller, it's not going to be slow. *That being said*, it should be expected to run at decent speed on raspberry pi-level hardware.
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* **Multi-threaded UI.** Callback methods are blocking - careful what you're doing in there! Feel free to use threads on your side, though.
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* **Complete ncurses equivalent.** You _can_ access the underlying ncurses window when creating your own custom views, so you can do what you want with that, but the main library will probably only use a subset of the ncurses features. Also, using ncurses at all is not guaranteed, [as other backends are considered](https://github.com/gyscos/Cursive/issues/34).
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## Compatibility
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First off, terminals are messy. A small set of features is standard, but beyond that, almost every terminal has its own implementation.
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### Output
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* **Colors**: the basic 8-colors palette should be broadly supported. User-defined colors is not supported in the raw linux TTY, but should work in most terminals, although it's still kinda experimental.
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* **UTF-8**: Currently Cursive really expects a UTF-8 locale. It may eventually get patched to support window borders on other locales, but it's not a priority.
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There is initial support for [wide characters](https://en.wikipedia.org/wiki/CJK_characters). [RTL](https://en.wikipedia.org/wiki/Right-to-left) support [is planned](https://github.com/gyscos/Cursive/issues/31), but still very early.
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### Input
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* The `key_codes` example can be a useful tool to see how the library reacts to various key presses.
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* Keep in mind that if the terminal has shortcuts registered, they probably won't be transmitted to the app.
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* UTF-8 input should work fine in a unicode-enabled terminal emulator, but raw linux TTY may be more capricious.
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## [Contributing](CONTRIBUTING.md)
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