mirror of
https://git.sr.ht/~eliasnaur/gio
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Elias Naur
142 lines
5.1 KiB
Markdown
142 lines
5.1 KiB
Markdown
# Gio
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Gio implements portable immediate mode GUI programs in Go. Gio programs run on all the major platforms:
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iOS/tvOS, Android, Linux (Wayland), macOS, Windows and browsers (Webassembly/WebGL).
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Gio includes an efficient vector renderer based on the Pathfinder project (https://github.com/pcwalton/pathfinder).
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Text and other shapes are rendered using only their outlines without baking them into texture images,
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to support efficient animations, transformed drawing and pixel resolution independence.
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[](https://godoc.org/gioui.org/ui)
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## Installation
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Gio is designed to work with very few dependencies. It depends only on the platform libraries for
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window management, input and GPU drawing.
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- [Linux](https://man.sr.ht/~eliasnaur/gio/install.md#linux)
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- [macOS, iOS, tvOS](https://man.sr.ht/~eliasnaur/gio/install.md#macos-ios-tvos)
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- [Windows](https://man.sr.ht/~eliasnaur/gio/install.md#windows)
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- [Android](https://man.sr.ht/~eliasnaur/gio/install.md#android)
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- [WebAssembly](https://man.sr.ht/~eliasnaur/gio/install.md#webassemblywebgl)
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## Running Gio programs
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With [Go 1.13](https://golang.org/dl/) or newer,
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$ export GO111MODULE=on
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$ go run gioui.org/apps/hello
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should display a simple message in a window.
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The command
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$ go run gioui.org/apps/gophers
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runs a simple (nonsense) demo that displays Go contributors fetched from GitHub.
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If you run into quota issues, supply a
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[Github token](https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line)
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with the `-token` flag:
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$ go run gioui.org/apps/gophers -token <github token>
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## Running on mobiles
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For Android, iOS, tvOS the `gogio` tool can build and package a Gio program for you.
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To build an Android .apk file from the `gophers` example:
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$ go run gioui.org/cmd/gogio -target android gioui.org/apps/gophers
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The apk can be installed to a running emulator or attached device with adb:
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$ adb install gophers.apk
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The `gogio` tool passes command line arguments to os.Args at runtime:
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$ go run gioui.org/cmd/gogio -target android gioui.org/apps/gophers -token <github token>
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The `-appid` flag specifies the iOS bundle id or Android package id. The flag is required
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for creating signed .ipa files for iOS and tvOS devices, because the bundle id must match an id
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previously provisioned in Xcode. For example,
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$ go run gioui.org/cmd/gogio -target ios -appid <bundle-id> gioui.org/apps/gophers
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Use the `Window->Devices and Simulators` option in Xcode to install the ipa file to the device.
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If you have [ideviceinstaller](https://github.com/libimobiledevice/ideviceinstaller) installed,
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you can install the app from the command line:
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$ ideviceinstaller -i gophers.ipa
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If you just want to run a program on the iOS simulator, use the `-o` flag to specify a .app
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directory:
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$ go run gioui.org/cmd/gogio -o gophers.app -target ios gioui.org/apps/gophers
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Install the app to a running simulator with simctl:
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$ xcrun simctl install booted gophers.app
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## Webassembly/WebGL
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To run a Gio program in a compatible browser, the `gogio` tool can output a directory ready to
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serve. With the `goxec` tool you don't even need a web server:
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$ go run gioui.org/cmd/gogio -target js gioui.org/apps/gophers
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$ go get github.com/shurcooL/goexec
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$ goexec 'http.ListenAndServe(":8080", http.FileServer(http.Dir("gophers")))'
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Open http://localhost:8080 in a browser to run the program.
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## Integration with existing projects
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See the [integration guide](https://man.sr.ht/~eliasnaur/gio/integrate.md) for details on using
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Gio with existing projects.
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## Programs using Gio
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- [Scatter](https://scatter.im), an implementation of the Signal protocol over email.
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## Resources
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- [FAQ](https://man.sr.ht/~eliasnaur/gio/faq.md).
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- [Gophercon 2019 talk](https://www.youtube.com/watch?v=9D6eWP4peYM) about Gio and [Scatter](https://scatter.im).
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[Slides](https://go-talks.appspot.com/github.com/eliasnaur/gophercon-2019-talk/gophercon-2019.slide),
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[Demos](https://github.com/eliasnaur/gophercon-2019-talk).
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- [Gophercon UK 2019 talk](https://www.youtube.com/watch?v=PxnL3-Sex3o) demonstrating a Gio program built from scratch.
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[Slides](https://go-talks.appspot.com/github.com/eliasnaur/gophercon-uk-2019-talk/gophercon-uk-2019-live.slide),
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[Demos](https://github.com/eliasnaur/gophercon-uk-2019-talk).
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## Issues
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File bugs and TODOs through the [issue tracker](https://todo.sr.ht/~eliasnaur/gio) or send an email
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to [~eliasnaur/gio@todo.sr.ht](mailto:~eliasnaur/gio@todo.sr.ht). For general discussion, use the
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mailing list: [~eliasnaur/gio@lists.sr.ht](mailto:~eliasnaur/gio@lists.sr.ht).
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## Contributing
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Post discussion and patches to the [mailing list](https://lists.sr.ht/~eliasnaur/gio). No Sourcehut
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account is required and you can post without being subscribed.
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See the [contribution guide](https://man.sr.ht/~eliasnaur/gio/contribute.md) for more details.
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## License
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Dual-licensed under [UNLICENSE](http://unlicense.org) or the MIT.
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## Donations
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Bitcoin donations are gladly accepted to [bc1q8xw95urett00f4xs3v66p2l6xp2mfk5erpe5ug](bitcoin:bc1q8xw95urett00f4xs3v66p2l6xp2mfk5erpe5ug).
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Donations will go toward hosting expenses and for supporting the author's full time work on Gio.
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