Importing icons from icondata

[TheToddmeister]

Hey
The library icondata has become a fairly standard component for Icons in several frameworks.
Its therefore often an autoinclude in many projects.
Would it be possible to create a feature flag that makes it possible to use the icons defined there?

I tried to look at it myself, but i can't read macros that well yet.
I would also be haopy if you just pointed me to a way of doing it that already exists

[flosse]

@TheToddmeister I'm not quite sure what you mean exactly. Can you give me an example in JS?

[TheToddmeister]

I'm not that knowledgeable on JS, but ill explain a bit more.
According to this documentation:
lealet docsf
An icon looks like this in JS:

var greenIcon = L.icon({
    iconUrl: 'leaf-green.png',
    shadowUrl: 'leaf-shadow.png',
    iconSize:     [38, 95], // size of the icon
    shadowSize:   [50, 64], // size of the shadow
    iconAnchor:   [22, 94], // point of the icon which will correspond to marker's location
    shadowAnchor: [4, 62],  // the same for the shadow
    popupAnchor:  [-3, -76] // point from which the popup should open relative to the iconAnchor
});

Icondata
Icondata is a popular library for Icons on crates.io. It offers SVG icons using this format:
It provides icons using this format:

#[allow(non_upper_case_globals)]
#[doc(hidden)]
pub static AiAccountBookFilled: &icondata_core::IconData = &icondata_core::IconData {
    style: None,
    x: None,
    y: None,
    width: None,
    height: None,
    view_box: Some("0 0 1024 1024"),
    stroke_linecap: None,
    stroke_linejoin: None,
    stroke_width: None,
    stroke: None,
    fill: None,
    data: r###"<path d="M880 184H712v........................................};

Without any personal knowledge on how or if this could be done: I'm wondering if an icondata::Icon could be provided as an argument to output a custom icon in leaflet?
Alternativly a macro could transform it at complie time with something like this:

const MOUNTAIN_ICON: &'static LeafletIconUrl = leaflet_icon!(icondata::BsMountainIcon);
struct LeafletIcon{
    icon: LeafletIconUrl,
    iconSize:     [38, 95], // size of the icon
    shadowSize:   [50, 64], // size of the shadow
    iconAnchor:   [22, 94], // point of the icon which will correspond to marker's location
    shadowAnchor: [4, 62],  // the same for the shadow
    popupAnchor:  [-3, -76] 
}

This is a little above my knowledge about rust, but this is my step by step thinking while shooting from the hip;

1. At compile time leaflet compiles the svg and and converts it to png
2. That compiled png is made available at "mountain_icon.png"
3. At runtime MOUNTAIN_ICON is a const url to that png icon
4. You can now build a LeafletIcon with args equivalent to those shown above from leaflet documentation