Freshly brewed user interfaces.
Owlkettle is a declarative user interface framework based on GTK. It is written in Nim.
Here is an example for a simple counter app. When you click on the "+" Button, the counter increments.
import owlkettle
viewable App:
counter: int
method view(app: AppState): Widget =
result = gui:
Window:
title = "Counter"
defaultSize = (200, 60)
Box(orient = OrientX, margin = 12, spacing = 6):
Label(text = $app.counter)
Button {.expand: false.}:
text = "+"
style = {ButtonSuggested}
proc clicked() =
app.counter += 1
brew(gui(App()))The code above will result in the following application:
Owlkettle also supports building libadwaita apps.
To enable libadwaita, import owlkettle/adw and change the last line to adw.brew(gui(App())).
Owlkettle requires GTK 4 to be installed on your system.
You can install it by running dnf install gtk4-devel libadwaita-devel on Fedora or apt install libgtk-4-dev libadwaita-1-dev on Ubuntu.
$ nimble install owlkettleYou can find a reference of all widgets in docs/widgets.md.
A tutorial for building a simple Todo application can be found here.
Additional examples can be found in the examples folder.
If you want to cross compile checkout docs/cross_compiling.md.
A guide for migrating from owlkettle 1.x.x to 2.0.0 is available here.
Owlkettle is licensed under the MIT license.
See LICENSE.txt for more information.