Themes: better support billboard on walls

assets/layers/advertising/advertising.json

@@ -291,10 +291,15 @@
             "mappings": [
               {
                 "if": {
-                  "or": [
+                  "and": [
+                    "_referencing_ways~*",
                     "advertising=billboard"
                   ]
                 },
+                "then": "./assets/themes/advertising/billboard_wall.svg"
+              },
+              {
+                "if": "advertising=billboard",
                 "then": "./assets/themes/advertising/billboard.svg"
               },
               {
@@ -454,6 +459,23 @@
         "./assets/themes/advertising/Repsol_Billboard.jpg"
       ]
     },
+    {
+      "tags": [
+        "advertising=billboard"
+      ],
+      "snapToLayer": [
+        "walls_and_buildings"
+      ],
+      "title": {
+        "en": "a billboard mounted to a wall"
+      },
+      "description": {
+        "en": "A large outdoor advertising structure, typically found in high-traffic areas such as alongside busy roads mounted on a wall"
+      },
+      "exampleImages": [
+        "./assets/themes/advertising/billboard_wall.jpg"
+      ]
+    },
     {
       "tags": [
         "advertising=poster_box"

assets/themes/advertising/billboard_wall.jpeg.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: https://www.openstreetmap.org/user/GEO%20ECLA
+SPDX-License-Identifier: CC0-1.0

assets/themes/advertising/billboard_wall.jpg.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: https://www.openstreetmap.org/user/GEO%20ECLA
+SPDX-License-Identifier: CC0-1.0

assets/themes/advertising/billboard_wall.svg.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: Barnes38
+SPDX-License-Identifier: CC-BY-SA-3.0

assets/themes/advertising/license_info.json

@@ -249,6 +249,26 @@
       "https://wiki.openstreetmap.org/wiki/File:Billboard_trunk.svg"
     ]
   },
+  {
+    "path": "billboard_wall.jpg",
+    "license": "CC0-1.0",
+    "authors": [
+      "https://www.openstreetmap.org/user/GEO%20ECLA"
+    ],
+    "sources": [
+      "https://imgur.com/billboard-eHdb1ir"
+    ]
+  },
+  {
+    "path": "billboard_wall.svg",
+    "license": "CC-BY-SA-3.0",
+    "authors": [
+      "Barnes38"
+    ],
+    "sources": [
+      "https://wiki.openstreetmap.org/wiki/File:Billboard_trunk.svg"
+    ]
+  },
   {
     "path": "board.svg",
     "license": "CC-BY-SA-3.0",

src/UI/Popup/AddNewPoint/PresetList.svelte

@@ -55,6 +55,9 @@
 
     for (const preset of layer.presets) {
       const tags = TagUtils.KVtoProperties(preset.tags ?? [])
+      if(preset.preciseInput.snapToLayers){
+        tags["_referencing_ways"] = '["way/-1"]'
+      }
 
       const markers = layer.mapRendering.map((mr, i) =>
         mr