gophercon-uk-2019-live.slide

Gio: Cross Platform GUI Programming
Gophercon UK 2019

Elias Naur
mail@eliasnaur.com
@eliasnaur
https://gioui.org
https://scatter.im

* Background

* Background

- [[https://groups.google.com/forum/#!topic/golang-nuts/OSD91zz2TgQ]["[ANN] Write Android apps in Go"]] - June, 2013
- [[https://github.com/golang/mobile/commit/d3521b7338121e39da67b21ea7d8942d3b47942e][First gomobile commit]] - July, 2014
- [[https://www.youtube.com/watch?v=QfFwceFo97E][dotGo talk introducing reverse bindings]] - October, 2016
- First (private) Gio commit - October, 2017
- [[https://groups.google.com/forum/#!topic/golang-nuts/H4us4194WQ4][Public release of Gio]] - March, 2019

: * Background

: .image tribaltrouble.jpg 470 _

: * Introduction

: Gio - [[https://gioui.org][https://gioui.org]]

: Gio is a simple Go module for writing portable and fast graphical interfaces.



* Gio

[[https://gioui.org][https://gioui.org]]

Features

- Immediate mode design.
- Only depends on lowest-level platform libraries.
- GPU accelerated vector and text rendering.
- No garbage generated in drawing or layout code.
- Cross platform (macOS, Linux, Windows, Android, iOS, tvOS, Webassembly).
- Core is 100% Go. OS-specific native interfaces are optional.


* Scatter


* Scatter

- [[https://scatter.im][https://scatter.im]]

In app stores

- [[https://play.google.com/apps/testing/im.scatter.app][Android Play Store Beta]]
- [[https://testflight.apple.com/join/jsGgyJvC][iOS TestFlight]]


* Demo

* The gogio tool

* Why Gio?



* Why Gio?

Gio is

- Simple. Immediate mode design, no hidden state.
- Portable. Runs on the desktop, mobile and browser.
- Fast. GPU accelerated, very little per-frame garbage.
- Public domain source (UNLICENCE). Dual licenced MIT if you prefer that.