Possibility to modify styling of MapContext instances

[elvin.d...@gmail.com]

Currently we seem to have little control of styling geographic objects that are also MapContext instances. For example using tbgeo:text to display a label of the item on the map. Can we control things like CSS styling? Color, font. alignment etc?

The documentation doesn’t mention it so I guess not, but on darker map areas the default black rendering is very hard to read so I’d like to have some more fine grained control over styling these things.

[Holger Knublauch]

Hi Elvin,

I am not aware that this is even possible in the Google Maps API. FWIW our code does this

markerItems.map((item) => {

let marker = this.markers[item.uri];

if(!marker) {

marker = new google.maps.Marker({

map: this.map,

})

marker.addListener('click', () => this.onClick(item))

this.markers[item.uri] = marker;

}

marker.setIcon(this.getMarkerIcon(item));

marker.setLabel(this.getMarkerLabel(item));

marker.setPosition({ lat: item.lat, lng: item.long});

marker.setTitle(sanitizeHTMLOnlyBTags(item.label));

usedMarkers[item.uri] = true;

})

for(let itemURI in this.markers) {

if(!usedMarkers[itemURI]) {

let marker = this.markers[itemURI];

marker.setMap(null);

delete this.markers[itemURI];

}

}

I guess the intention is that the marker labels are just short texts that appear on top of the icon, and thus have predictable background.

Given that you don't really know what the background would be I don't know how you would choose a suitable color. For example if you make it white, how would it know that the background isn't white at this place on the map.

Holger

On 4 Dec 2023, at 12:22 pm, elvin.d...@gmail.com <elvin.d...@gmail.com> wrote:

Currently we seem to have little control of styling geographic objects that are also MapContext instances. For example using tbgeo:text to display a label of the item on the map. Can we control things like CSS styling? Color, font. alignment etc?

The documentation doesn’t mention it so I guess not, but on darker map areas the default black rendering is very hard to read so I’d like to have some more fine grained control over styling these things.

<Scherm­afbeelding 2023-12-04 om 12.16.26.png><Scherm­afbeelding 2023-12-04 om 12.20.31.png>

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