This Month in Linebender, September 2024 #70
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| title = "This Month in Linebender, September 2024" | ||||||
| authors = ["Daniel McNab", "Olivier Faure"] | ||||||
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| Linebender is an informal open-source organization working on various projects to advance the state of the art in GUI for [the Rust programming language](https://rust-lang.org). | ||||||
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| <img style="height: auto; margin: 0 auto" src="../../linebender.svg" alt="Linebender logo; smoothly stroked overlapping lowercase letters, an l and a b." height="200" width = "200"> | ||||||
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| ## Xilem | ||||||
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| Xilem is our flagship GUI project, inspired by SwiftUI. | ||||||
| It lets you build user interfaces declaratively by composing lightweight views together, and will diff them to provide minimal updates to a retained layer. | ||||||
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| - HTTP cats example ([xilem#571][]). | ||||||
| - `lens`, a shorthand for a common component pattern ([xilem#587][]). | ||||||
| - We added Views for some existing and new widgets: | ||||||
| - Grid layout ([xilem#570][]). | ||||||
| - Images ([xilem#571][]). | ||||||
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| <!-- TODO: Xilem Web seems to not have any especially relevant updates? --> | ||||||
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| <figure> | ||||||
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| <img style="height: auto" src="http-cats.png" alt="A list of HTTP status codes, with 'Select' buttons. HTTP code 418 'I'm a teapot' is selected, with a picture of a kitten hiding in a teapot. height="962" width = "600"> | ||||||
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| The HTTP cats example. | ||||||
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| </figcaption> | ||||||
| </figure> | ||||||
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| ## Masonry | ||||||
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| Masonry is the widget system used by Xilem. | ||||||
| It provides a non-opinionated retained widget tree on top of Winit, designed as a base layer for high-level GUI frameworks. | ||||||
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| Our ongoing pass specification project has been largely implemented. | ||||||
| That work is now in a wrapping-up stage, which has allowed Olivier to work on improving the codebase's quality in general. | ||||||
| Some highlights of work from September: | ||||||
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| - [xilem#515][]: Removes unimplemented functionality from our text handling code. | ||||||
| - [xilem#570][]: An implementation of a grid layout, by Jared O'Connell. | ||||||
| - [xilem#550][]: Restores scroll requests, as used by text inputs. | ||||||
| - [xilem#565][]: Allows widgets to implement more efficient pointer position dispatching, by new Linebender member Tom Churchman. | ||||||
| - [xilem#580][]: Adds screen reader support for the textbox widget. | ||||||
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| <!-- No grid example, it's not really visual. --> | ||||||
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| Some ongoing work includes: | ||||||
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| - [xilem#615][]: Detailed accessibility information for text input and prose widgets. | ||||||
| - [xilem#606][]: Custom client side decorations for Wayland, by Marco Melorio. | ||||||
| - [xilem#605][]: Greater flexibility in the layout of the `Image` widget, by failingprovince. | ||||||
| - [xilem#591][]: An SVG-like widget for absolute positioning, by Muhammad Ragib Hasin. | ||||||
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| ## Vello | ||||||
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| Vello is our GPU vector renderer. | ||||||
| It can draw large 2D scenes with high performance, using GPU compute shadersfor most of the work. | ||||||
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| Progress towards the upcoming 0.3.0 release can be tracked in [the milestone](https://github.com/linebender/vello/milestone/2). | ||||||
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Since we have now released version 0.3.0, it's probably more likely to confuse if we include this. |
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| - We no longer consider Vello to be experimental ([vello#691][]). Please note that Vello is still an alpha, and has several known issues. | ||||||
| - An implementation of the single pass scan described last month is being created by Thomas Smith in [vello#685][]. | ||||||
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| ## Parley | ||||||
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| Parley is a text layout library. | ||||||
| It handles text layout, mostly at the level of line breaking and resolving glyph positions. | ||||||
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| - Nico Burns contributed a new way to assign layout properties in [parley#76][]. | ||||||
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| ## Others | ||||||
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| - Daniel and Olivier's "office hours" appointments can still be booked by anyone for open-ended discussion of the ecosystem. | ||||||
| - [See Daniel's schedule here](https://calendar.google.com/calendar/u/0/appointments/schedules/AcZssZ32eQYJ9DtZ_wJaYNtT36YioETiloZDIdImFpBFRo5-XsqGzpikgkg47LPsiHhpiwiQ1orOwwW2). | ||||||
| - [See Olivier's schedule here](https://calendar.google.com/calendar/u/0/appointments/schedules/AcZssZ2t767ZRETD_TkRI_VxK2ZTG0VrO9OZ4l7HvTxefhtJcg85iK0ZN7zWNnAEZtH0Dn7C1GKxrmYM). | ||||||
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| [xilem#515]: https://github.com/linebender/xilem/pull/515 | ||||||
| [xilem#550]: https://github.com/linebender/xilem/pull/550 | ||||||
| [xilem#565]: https://github.com/linebender/xilem/pull/565 | ||||||
| [xilem#570]: https://github.com/linebender/xilem/pull/570 | ||||||
| [xilem#571]: https://github.com/linebender/xilem/pull/571 | ||||||
| [xilem#580]: https://github.com/linebender/xilem/pull/580 | ||||||
| [xilem#587]: https://github.com/linebender/xilem/pull/587 | ||||||
| [xilem#591]: https://github.com/linebender/xilem/pull/591 | ||||||
| [xilem#605]: https://github.com/linebender/xilem/pull/605 | ||||||
| [xilem#606]: https://github.com/linebender/xilem/pull/606 | ||||||
| [xilem#615]: https://github.com/linebender/xilem/pull/615 | ||||||
| [vello#685]: https://github.com/linebender/vello/pull/685 | ||||||
| [vello#691]: https://github.com/linebender/vello/pull/691 | ||||||
| [parley#76]: https://github.com/linebender/parley/pull/76 | ||||||
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I've not included the shadows in my previous screenshots.
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Not sure what you mean by shadows?