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//! A Rust wrapper for pugl
//!
//! This crate is wrapper for [pugl](https://gitlab.com/lv2/pugl/), a
//! minimal portable API for embeddable GUIs.
//!
//! Since this crate depends on `-sys` crates that use `bindgen` to
//! create the C API bindings, you need to have clang installed on
//! your machine.
//!
//! `pugl` in principle supports several graphical backends. This
//! crate so far supports only the Cairo backend. So all the drawing
//! is done using the [cairo-rs](https://crates.io/crates/cairo-rs)
//! crate.
//!
//! # Usage
//!
//! `pugl-sys` provides (maybe unlike classical `*-sys` crates) not
//! only access to the functionality of `pugl` via FFI but also a thin
//! layer to use `pugl` in a safe Rust-like way.
//!
//! In the center there is the
//! [`PuglViewTrait`](trait.PuglViewTrait.html). In order to use
//! `pugl-sys` for your application (or more precisely an UI for an
//! application, set up a struct that implements `PuglViewTrait` an
//! application.
//!
//! # GUI-Toolkit stub `pugl-ui`
//!
//! The crate [`pugl-ui`](https://crates.io/crates/pugl-ui) provides a
//! stub of a GUI toolkit. It features simple box layouting and event
//! propagation as well as a trait to implement widgets.
//!
//! # Example
//!
//! ``` ignore
//! use pugl_sys::*;
//! use std::f64::consts::PI;
//!
//! // Make an struct which has all the application logic
//! struct UI {
//! view: PuglViewFFI,
//! red: f64,
//! green: f64,
//! width: f64,
//! height: f64,
//! close_requested: bool
//! }
//!
//! // Make the UI struct implement the PuglViewTrait
//! impl PuglViewTrait for UI {
//! // exposure events
//! fn exposed(&mut self, _expose: &ExposeArea, cr: &cairo::Context) {
//! let radius = self.width.min(self.height) / 3.0;
//!
//! cr.set_source_rgb(0., 0., 1.);
//! cr.rectangle(0., 0., self.width, self.height);
//! cr.fill();
//!
//! cr.set_source_rgb(self.red, self.green, 0.0);
//! cr.arc(self.width/2.0, self.height/2.0, radius, 0.0, 2.0 * PI);
//! cr.fill();
//! }
//!
//! // input events
//! fn event(&mut self, ev: Event) -> Status {
//! match ev.data {
//! EventType::MouseMove(_) => {
//! let pos = ev.pos();
//! self.red = pos.x / self.width;
//! self.green = pos.y / self.height;
//! self.post_redisplay();
//! }
//! _ => {}
//! }
//! Status::Success
//! }
//!
//! // a window resize event
//! fn resize(&mut self, size: Size) {
//! self.width = size.w;
//! self.height = size.h;
//! self.post_redisplay();
//! }
//!
//! // a window close event
//! fn close_request(&mut self) {
//! self.close_requested = true;
//! }
//!
//! fn view(&self) -> PuglViewFFI {
//! self.view
//! }
//! }
//!
//! impl UI {
//! fn new(view: PuglViewFFI) -> Self {
//! Self {
//! view,
//! red: 1.0,
//! green: 0.0,
//! width: 800.0,
//! height: 600.0,
//! close_requested: false
//! }
//! }
//! }
//!
//! fn example() {
//! // Request a PuglView passing a closure that returns an initialized `UI`.
//! let mut view = PuglView::<UI>::new(std::ptr::null_mut(), |pv| UI::new(pv));
//! // borrow the UI handle from the view and do some window initialization
//! let ui = view.handle();
//! ui.set_window_title("Test Pugl");
//! ui.make_resizable();
//! ui.set_default_size(ui.width.round() as i32, ui.height.round() as i32);
//! ui.show_window();
//!
//! // event loop until a close even occurs
//! while !ui.close_requested {
//! ui.update(-1.0);
//! }
//! }
//!
//! example();
//! ```
extern crate cairo;
extern crate cairo_sys;
extern crate bitflags;
extern crate serial_test;
pub
pub use *;
pub use *;
pub use *;