pugl-sys – a rust wrapper for pugl
pugl is a minimal portable API for embeddable GUIs https://gitlab.com/lv2/pugl/
This crate aims to provide crate bindings for Rust.
Basis for small light weight self contained GUI toolkits, especially to implement UIs of LV2 plugins. GUIs for LV2 plugins need to be self contained, i.e. they should be statically linked and must not dynamically link any other GUI toolkit. Otherwise symbols of the same GUI toolkit in different versions used by different plugins running in the same host would clash.
Beta testing stage. Not all features of pugl are available yet (see below). Currently only tested on Linux/X11. Rust hackers interested in programming small embeddable GUIs are encouraged to try it out.
Before reaching the 1.0.0 release, incompatible API changes can happen. There
is no large base of applications using
pugl-sys as of yet. So experience with
the API is limited. The 1.0.0 release will not happen before several developers
pugl-sys for real life applications and given feedback.
If it turns out that there is a better way to design the API it will be done.
After 1.0.0 incompatible API changes will be rare. They will happen if
changes the API in an incompatible way which would not be sensible to hide
behind some abstraction layer.
How to use
It's available at crates.io so just add it
as dependency in your
This crate has only one minimal example in the docs. There is the pugl-ui crate that is a stub of a GUI toolkit implementing widget layout and event propagation. Maybe you want to check this out.
Not all features of pugl are implemented.
World as separately accessible entity
So far the World is only accessible via the View and only by unsafe FFI functions. The only World function that is safely wrapped is
To implement that it takes a mechanism to share references to the same World across multiple views, that makes sure that the World is destroyed after the last View is destroyed but not while at least one View still exists.
Support for manually sending events
This is basically wrapping the function
puglSendEvent(). To implement it it takes a conversion from
Support for Clipboard
Probably easy for plain text. For other MIME data some other dependency would be required.
Support for other backends than Cairo
As of now, a view simply sets the Cairo backend and converts the handle to a
cairo::Contextwhen an exposure event happens.
Some minor functions are not wrapped
Test (and make it work) on platforms other than Linux