Slint 1.14 Released

We're proud to announce the release of Slint 1.14. Supporting powerful graphics transformations and improving the Python integration.

Universal Graphical Transforms

Scale and rotate are now a key part of the language and apply to all elements. Previously it was possible to rotate Images and Text, but now any visual item can be transformed. This also makes the language significantly easier to use as you no longer need to think about how you parent items.

Checkout this demo which highlights these new features.

Python Integration

We've added asyncio support to Slint for Python, which allows you to write asynchronous code. Slint's own event loop now acts as a running asyncio.EventLoop and provides the necessary primitives so that frameworks like aiohttp work out of the box. To make the API even more pythonic, you can use async even for Slint callbacks. Here's a brief example of Python code that fetches different poem each time:

import slint
import aiohttp

class AppWindow(slint.loader.app_window.AppWindow):
    # Callback automatically connected to `refresh-peom` callback in .Slint. When invoked, it's run as
    # a new asyncio Task
    @slint.callback
    async def refresh_poem(self):
        async with aiohttp.ClientSession() as session:
            async with session.get("https://poetrydb.org/random") as response:
                json = await response.json()
                lines = json[0]["lines"]
                text = "\n".join(lines)
                # Update peom text property from Slint that updates TextEdit
                self.poem = text

async def main():
    app = AppWindow()
    app.show()
    app.refresh_poem()

slint.run_event_loop(main())

The Python integration also now works with Slint's localization files.

Unified Text Layout

Slint comes with four built-in renderers: FemtoVG, Skia, Qt, and our own Software renderer. When it comes to text, each of these come with their own mechanism of loading fonts and laying out text.

In this release, we've unified everything behind the Fontique and Parley crates from the Linebender organization. This provides a consistent behavior for all users across platforms, improves font selection on Linux, and paves the way for Rich text support.

🛠️ Other Changes

For a complete list of all changes, check out the full ChangeLog.

🚀 Getting Started with Slint 1.14

• New to Slint? Start here: Get Started
• Upgrading? Follow the steps on our GitHub release page
• Browse the latest docs at https://docs.slint.dev

Don’t forget to star us on GitHub, join our Mattermost chat, and share your projects.

🌟 Thanks

Big thanks to everyone who contributed code, fixes, or feedback. You help us make Slint better with every release.

@0x6e @6he @arkus7 @bennysj @bryce-happel-walton @DataTriny @dfaure @gustavo-hms @LeonMatthes @LouisBouch @michalfita @Montel @MuhAssar @npwoods @redstrate @task-jp @woile