[[Image(...)]] Layer checker

Description

This style displays the value of ​Key:layer as a coloured underlay. This helps to check, if the correct layer value is tagged without the need to select every single way and look at the layer value. The following values are allowed: -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. All other values are reported as wrong value. There is a style setting to disallow also layer=0.

Example images

Example of Layer checker:

^{(data used for image ​©OpenStreetMap contributors ODbL)}

Legend:

Changelog

^{(Latest change first)}

Version 0.9.x to 1.0.x

• change default colours
• add icon
• add style setting to disallow layer=0

Version 0.9.x

• inital version

Code

meta {
    title: "Layer checker";
    version: "1.0.20_2024-10-12";
    description: "Display of layer values in JOSM map display.";
    icon: "layerchecker.svg";
    author: "Klumbumbus";
    link: "http://josm.openstreetmap.de/wiki/Styles/LayerChecker";
    watch-modified: true;
    /* min-josm-version: "?";  */ /* not sure */
}

meta[lang=de] {
    title: "Ebenenprüfer";
    description: "Anzeige der layer-Werte in der JOSM-Kartenanzeige.";
    link: "http://josm.openstreetmap.de/wiki/De:Styles/LayerChecker";
}

/* create settings */
setting::allow_layer_0 {
    type: boolean;
    label: tr("allow layer=0");
    default: true;
}

/* Changes to the JOSM internal mappaint style elemstyles.mapcss to fit better together with Layer checker */
    /* disable tiger layer */
way["tiger:reviewed"=no]::core_tiger {
    opacity: 0;
}
    /* disable street names */
way[highway] {
    text: none;
}
    /* make bridge and tunnel layer wider */
way[bridge]::core_bridge,
way[tunnel=yes]::core_tunnel {
    width: +6;
}

/* display layer=* */
    /* ways */
way["layer"=~/^(-9|-8|-7|-6|-5|-4|-3)$/]::layer {
    set layer;
    z-index: -3;
    color: layer_minus5#ff0000;
}
way["layer"="-2"]::layer {
    set layer;
    z-index: -2;
    color: layer_minus2#ff7519;
}
way["layer"="-1"]::layer {
    set layer;
    z-index: -1;
    color: layer_minus1#ffff00;
}
way["layer"="0"][setting("allow_layer_0")]::layer {
    set layer;
    z-index: 0;
    color: layer_0#b8b8b8;
}
way["layer"="1"]::layer {
    set layer;
    z-index: 1;
    color: layer_1#00ff00;
}
way["layer"="2"]::layer {
    set layer;
    z-index: 2;
    color: layer_2#00ffff;
}
way["layer"=~/^(9|8|7|6|5|4|3)$/]::layer {
    set layer;
    z-index: 3;
    color: layer_5#9933ff;
}

way.layer::layer {
    opacity: 0.9;
    width: 20;
    major-z-index: 1.9; /* below bridge layer of default style, to see the bridge */
}

    /* nodes */
node["layer"=~/^(-9|-8|-7|-6|-5|-4|-3)$/]::layer {
    set layer;
    z-index: -3;
    symbol-fill-color: layer_minus5#ff0000;
}
node["layer"="-2"]::layer {
    set layer;
    z-index: -2;
    symbol-fill-color: layer_minus2#ff7519;
}
node["layer"="-1"]::layer {
    set layer;
    z-index: -1;
    symbol-fill-color: layer_minus1#ffff00;
}
node["layer"="0"][setting("allow_layer_0")]::layer {
    set layer;
    z-index: 0;
    symbol-fill-color: layer_0#b8b8b8;
}
node["layer"="1"]::layer {
    set layer;
    z-index: 1;
    symbol-fill-color: layer_1#00ff00;
}
node["layer"="2"]::layer {
    set layer;
    z-index: 2;
    symbol-fill-color: layer_2#00ffff;
}
node["layer"=~/^(9|8|7|6|5|4|3)$/]::layer {
    set layer;
    z-index: 3;
    symbol-fill-color: layer_5#9933ff;
}

node.layer::layer {
    symbol-size: 26;
    symbol-shape: circle;
    z-index: -1;
    symbol-fill-opacity: 0.9;
}

/* report wrong value of layer */
way!.layer[layer]::layer {
    color: yellow;
    dashes-background-color: red;
    dashes: 4,24;
    opacity: 1;
    width: 5;
    text: tr("no correct value for layer!");
    text-color: black;
    font-size: 11;
    text-halo-color: red;
    text-halo-radius: 2;
    casing-width: 1;
    casing-color: yellow;
}
node!.layer[layer]::layer {
    symbol-shape: triangle;
    symbol-fill-color: red;
    symbol-size: 30;
    symbol-stroke-color: yellow;
    text: tr("no correct value for layer!");
}

Styles_LayerChecker-style.mapcss, Styles_LayerChecker.zip