Function handleLayerDefaults

src/plots/map/layout_defaults.js:49–114

(layerIn, layerOut)

}

function handleLayerDefaults(layerIn, layerOut) {
    function coerce(attr, dflt) {
        return Lib.coerce(layerIn, layerOut, layoutAttributes.layers, attr, dflt);
    }

    var visible = coerce('visible');
    if(visible) {
        var sourceType = coerce('sourcetype');
        var mustBeRasterLayer = sourceType === 'raster' || sourceType === 'image';

        coerce('source');
        coerce('sourceattribution');

        if(sourceType === 'vector') {
            coerce('sourcelayer');
        }

        if(sourceType === 'image') {
            coerce('coordinates');
        }

        var typeDflt;
        if(mustBeRasterLayer) typeDflt = 'raster';

        var type = coerce('type', typeDflt);

        if(mustBeRasterLayer && type !== 'raster') {
            type = layerOut.type = 'raster';
            Lib.log('Source types *raster* and *image* must drawn *raster* layer type.');
        }

        coerce('below');
        coerce('color');
        coerce('opacity');
        coerce('minzoom');
        coerce('maxzoom');

        if(type === 'circle') {
            coerce('circle.radius');
        }

        if(type === 'line') {
            coerce('line.width');
            coerce('line.dash');
        }

        if(type === 'fill') {
            coerce('fill.outlinecolor');
        }

        if(type === 'symbol') {
            coerce('symbol.icon');
            coerce('symbol.iconsize');

            coerce('symbol.text');
            Lib.coerceFont(coerce, 'symbol.textfont', undefined, {
                noFontVariant: true,
                noFontShadow: true,