Mapsui VS sciter-js-sdk

But I think some of this stuff is already handled in Avalonia ecosystem like https://github.com/Mapsui/Mapsui, https://github.com/beto-rodriguez/LiveCharts2 and few others...

Release 4.0.0 · Mapsui/Mapsui (github.com)

You are probably using Xamarin.Maps that use native maps, Google Maps on Android and Apple Maps on iOS, I assume. In Windows there's no native map, so you would need some third party library. I would recommend Mapsui

... private static void MapOnInfo(object? sender, MapInfoEventArgs e) { var calloutStyle = e.MapInfo?.Feature?.Styles.Where(s => s is CalloutStyle).Cast().FirstOrDefault(); if (calloutStyle != null) { calloutlist.Add(calloutStyle); foreach (var callout in calloutlist) { callout.Enabled = false; } calloutStyle.Enabled = !calloutStyle.Enabled; e.MapInfo?.Layer?.DataHasChanged(); // To trigger a refresh of graphics. } if (calloutlist.Count > 1) calloutlist.RemoveRange(0, calloutlist.Count - 1); } private MemoryLayer CreatePointLayer() { return new MemoryLayer { Name = "Points", IsMapInfoLayer = true, Features = new Mapsui.Providers.MemoryProvider(GetPlacesFromList()).Features, Style = SymbolStyles.CreatePinStyle() //<- Reference for custom marker: https://github.com/Mapsui/Mapsui/blob/master/Samples/Mapsui.Samples.Common/Maps/Callouts/CustomCalloutSample.cs#L64 }; } ... private static CalloutStyle CreateCalloutStyle(string? name) { return new CalloutStyle { Title = name, TitleFont = { FontFamily = null, Size = 12, Italic = false, Bold = true }, TitleFontColor = Color.Violet, MaxWidth = 120, RectRadius = 10, ShadowWidth = 4, Enabled = false, SymbolOffset = new Offset(0, SymbolStyle.DefaultHeight * 0.3f) }; }

Looking through their getting started page and their examples on Github (specifically: SingleCalloutSample) I was able to get my list of places to show up on the map and when clicked display certain features.This has led to me only being able to toggle whether the callout is displayed or not. What I am hoping to figure out is how to disable all other callouts once another location is selected, so that only a single callout is displayed at a time.

Json.net, MahApps.Metro, and MapsUI

So I did a quick DDG search and found these two results. Link 1. Link 2. Good luck.

- https://gitlab.com/sciter-engine/sciter-js-sdk/-/tree/main/b... - Skia backend.

You can load in usciter this document:

https://gitlab.com/sciter-engine/sciter-js-sdk/-/blob/main/s...

It shows pretty large colorized texts so you can estimate how Direct2D and Skia handle GPU accelerated text rendering. For these two binaries the difference is only in graphics used - Direct2D and Skia.

Agree about virtualization in principle. Not that nightmarish though.

My Sciter supports built-in virtualization out of the box. But I shall admit that this is second approach to the problem.

Currently Sciter's behavior:virtual-list supports as fixed-height items (that's easy) as variable-height items like messages [1] in chats.

API is relatively simple [2]: single event "contentrequired" that virtual-list sends to JS. In response JS shall either append or prepend requested number of DOM elements to the container (a.k.a. sliding window scroller). Example, grid showing 20000 records: https://gitlab.com/sciter-engine/sciter-js-sdk/-/blob/main/s...

[1] https://sciter.com/behaviorvirtual-list-for-sciter-and-scite...

Thank you for your explanation. As for Electron alternatives, Sciter is much more lightweight, supports Vue and includes a native webview. Anyway, good luck with your project!

> we have a number of other libs to integrate, some of which add their own rendering (which requires access to e.g. a Vulkan context, not merely HTML/CSS or other high-level UI elements)…

I have a customer that is doing something close: it is a 3D CAD alike app where they have Vulkan rendering 3D scene with Sciter UI on top of that - rendering chrome UI around that 3D and on the same Vulkan surface.

Sciter API supports rendering in windowless mode (https://gitlab.com/sciter-engine/sciter-js-sdk/-/tree/main/d...) where app supplies OpenGL, Vulkan or DirectX context to render on.

> Sorry, but I'll have to pass.

Understood. Sometimes people need not just to get job done but also "OS" label on it.

Attempt to combine all these definition in single language is doomed to fail. If in doubts then look at WPF.

3. Notes on language-behind-UI...

If to consider #2 then such simple thing as JavaScript language and VM are quite adequate to the task. Language-behind-UI do not need to be that performant, but it must be flexible. I may express un-popular opinion but language-behind-UI should be typeless.

Simply put: don't do ray tracing in language-behind-UI. But! Such a language shall have simple mechanism of adding high performant functions. There are good languages that are specifically designed for performance: C, C++, D, Rust, Zig, WebAssembly, etc. You just need convenient mechanism to expose those functions to runtime of language-behind-UI. Like here: https://gitlab.com/sciter-engine/sciter-js-sdk/-/blob/main/d...

You need JITs, compilation, fat VMs and runtimes, strong types only if your language is the only mean to define algorithms in whole application. But expect that your code will always be sub-optimal - neither enough performant nor super flexible.

4. Conclusion

Flutter should be something Sciter-alike :) - use [X]HTML/JSX, CSS and some already well known language-behind-UI. JavaScript is the natural choice. If needed you should be able to use native UI components - like in Sciter you can use existing HWND based and windowless native components inside your UI. It may not follow Web UI model on 100% (that's impossible) but to be conceptually close so developers can reuse their skills. Web UI model is conceptually close to Mobile one - all application UI is constrained inside single window.

I'm surprised no one has mentioned it but I've been using SciterJS (website) for my most recent project. I wouldn't ever claim it's the best UI framework out there, but it's lightweight and I've never felt so productive - I've rapidly developed my UI and integrated it with my native C++ far faster than I thought possible. I will note that it is far, far cheaper and has so many more features than Ultralight does.

Only when code tries to access props/methods of the loaded object it gets fetched from disk, its __proto__ is set to particular class, etc.

More on this architecture: https://gitlab.com/sciter-engine/sciter-js-sdk/-/blob/main/d...

Patched QuickJS with storage support is here: https://gitlab.com/c-smile/quickjspp - it uses DyBase of Konstantin Knizhnik as a storage.

More on i18n support in Sciter.

Sciter got native (built-in) Signal implementation made after PReact's Signals;