Is it possible to create custom widgets like highcharts for 2D/3D data visualization?

[cokkiy]

Is it possible to create custom widgets like highcharts for 2D/3D data visualization? I tried to find a widget for data visualization but had no results and no document mentions how to create customer widgets, Can the developer create a customer widget anyway? Or does any roadmap allow the dev to extend the slint?

[ogoffart]

Something like this ? https://slint.dev/demos/plotter/

To create such a widget you would typically do something like this:

export global MyWidgetLogic {
   pure callback render(width: length, height: length, some_value: string, some_other_value: int) -> image;
}

export component MyWidget {
   in property <string> some_value;
   private property <int> some_other_value;
   Image {
      source: MyWidgetLogic.render(root.width, root.height, some_value, some_other_value);
   }
   TouchArea {
       pointer-event => { /* .. do something, maybr change some_other_value .. */ }
   }
}

I hope this helps.

If render can be slow, you can, in your logic, cache the value. And if it is not in cache, return a placeholder image. And depend on another property such that you can render in a thread and set that property when it is ready.