From d623b70d7273ad212074fa1e008c4e3ceb480fdf Mon Sep 17 00:00:00 2001
From: Matthew Somerville <matthew-github@dracos.co.uk>
Date: Tue, 26 Apr 2016 14:59:01 +0100
Subject: Fix displaying of map tiles.

This updates the map tile code to match the website, allowing easier
non-UK usage of Bing Maps by not including the map-fms.js file.
---
 www/js/map-fms.js | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 www/js/map-fms.js

(limited to 'www/js/map-fms.js')

diff --git a/www/js/map-fms.js b/www/js/map-fms.js
new file mode 100644
index 0000000..598665b
--- /dev/null
+++ b/www/js/map-fms.js
@@ -0,0 +1,72 @@
+var fms_tile_base = [ [ '', 'a-', 'b-', 'c-' ], 'https://{S}tilma.mysociety.org/sv' ];
+
+function set_map_config(perm) {
+    _set_map_config();
+    fixmystreet.map_type = OpenLayers.Layer.BingUK;
+}
+
+OpenLayers.Layer.BingUK = OpenLayers.Class(OpenLayers.Layer.Bing, {
+    uk_bounds: [
+        new OpenLayers.Bounds(-6.6, 49.8, 1.102680, 51),
+        new OpenLayers.Bounds(-5.4, 51, 2.28, 54.94),
+        new OpenLayers.Bounds(-5.85, 54.94, -1.15, 55.33),
+        new OpenLayers.Bounds(-9.35, 55.33, -0.7, 60.98)
+    ],
+
+    in_uk: function(c) {
+        c = c.clone();
+        c.transform(
+            fixmystreet.map.getProjectionObject(),
+            new OpenLayers.Projection("EPSG:4326")
+        );
+        if ( this.uk_bounds[0].contains(c.lon, c.lat) || this.uk_bounds[1].contains(c.lon, c.lat) || this.uk_bounds[2].contains(c.lon, c.lat) || this.uk_bounds[3].contains(c.lon, c.lat) ) {
+            return true;
+        }
+        return false;
+    },
+
+    setMap: function() {
+        OpenLayers.Layer.Bing.prototype.setMap.apply(this, arguments);
+        this.map.events.register("moveend", this, this.updateAttribution);
+    },
+
+    updateAttribution: function() {
+        var z = this.map.getZoom() + this.zoomOffset;
+        var copyrights;
+        var logo = '';
+        var c = this.map.getCenter();
+        var in_uk = c ? this.in_uk(c) : true;
+        if (z >= 16 && in_uk) {
+            copyrights = 'Contains Ordnance Survey data &copy; Crown copyright and database right 2014';
+        } else {
+            logo = '<a href="https://www.bing.com/maps/"><img border=0 src="https://dev.virtualearth.net/Branding/logo_powered_by.png"></a>';
+            copyrights = '&copy; 2011 <a href="https://www.bing.com/maps/">Microsoft</a>. &copy; AND, Navteq, Ordnance Survey';
+        }
+        this._updateAttribution(copyrights, logo);
+    },
+
+    get_urls: function(bounds, z) {
+        var urls;
+        var in_uk = this.in_uk(bounds.getCenterLonLat());
+        if (z >= 16 && in_uk) {
+            urls = [];
+            for (var i=0; i< fms_tile_base[0].length; i++) {
+                urls.push( fms_tile_base[1].replace('{S}', fms_tile_base[0][i]) + "/${z}/${x}/${y}.png" );
+            }
+        } else {
+            var type = '';
+            if (z > 10 && in_uk) {
+                type = '&productSet=mmOS&key=' + CONFIG.BING_MAPS_API_KEY;
+            }
+            urls = [
+                "https://ecn.t0.tiles.virtualearth.net/tiles/r${id}.png?g=3467" + type,
+                "https://ecn.t1.tiles.virtualearth.net/tiles/r${id}.png?g=3467" + type,
+                "https://ecn.t2.tiles.virtualearth.net/tiles/r${id}.png?g=3467" + type,
+                "https://ecn.t3.tiles.virtualearth.net/tiles/r${id}.png?g=3467" + type
+            ];
+        }
+        return urls;
+    },
+
+    CLASS_NAME: "OpenLayers.Layer.BingUK"
+});
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