Merge pull request #1151 from polarbearing/patch-1

[rails.git] / app / assets / javascripts / index / history.js

diff --git a/app/assets/javascripts/index/history.js b/app/assets/javascripts/index/history.js
index 71a94aef0d1ca014d446fa59c8a4ebeaa74c4038..38d0b249ac23cecfd89363207785035f7dd30043 100644 (file)
--- a/app/assets/javascripts/index/history.js
+++ b/app/assets/javascripts/index/history.js
@@ -38,12 +38,12 @@ OSM.History = function(map) {
   };
 
   function highlightChangeset(id) {
-    group.getLayer(id).setStyle({fillOpacity: 0.3});
+    group.getLayer(id).setStyle({fillOpacity: 0.3, color: "#FF6600", weight: 3});
     $("#changeset_" + id).addClass("selected");
   }
 
   function unHighlightChangeset(id) {
-    group.getLayer(id).setStyle({fillOpacity: 0});
+    group.getLayer(id).setStyle({fillOpacity: 0, color: "#FF9500", weight: 2});
     $("#changeset_" + id).removeClass("selected");
   }
 
@@ -89,27 +89,30 @@ OSM.History = function(map) {
     });
   }
 
-  function updateMap() {
-    group.clearLayers();
+  var changesets = [];
 
-    var changesets = [];
+  function updateBounds() {
+    group.clearLayers();
 
-    $("[data-changeset]").each(function () {
-      var changeset = $(this).data('changeset');
-      if (changeset.bbox) {
-        var latModifier = 0;
-        var lonModifier = 0;
+    changesets.forEach(function(changeset) {
+      var bottomLeft = map.project(L.latLng(changeset.bbox.minlat, changeset.bbox.minlon)),
+          topRight = map.project(L.latLng(changeset.bbox.maxlat, changeset.bbox.maxlon)),
+          width = topRight.x - bottomLeft.x,
+          height = bottomLeft.y - topRight.y,
+          minSize = 20;  // Min width/height of changeset in pixels
 
-        if (changeset.bbox.minlat === changeset.bbox.maxlat || changeset.bbox.minlon === changeset.bbox.maxlon) {
-          latModifier = 0.0001;
-          lonModifier = 0.0002;
-        }
+      if (width < minSize) {
+        bottomLeft.x -= ((minSize - width) / 2);
+        topRight.x += ((minSize - width) / 2);
+      }
 
-        changeset.bounds = L.latLngBounds(
-          [changeset.bbox.minlat - latModifier, changeset.bbox.minlon - lonModifier],
-          [changeset.bbox.maxlat + latModifier, changeset.bbox.maxlon + lonModifier]);
-        changesets.push(changeset);
+      if (height < minSize) {
+        bottomLeft.y += ((minSize - height) / 2);
+        topRight.y -= ((minSize - height) / 2);
       }
+
+      changeset.bounds = L.latLngBounds(map.unproject(bottomLeft),
+                                        map.unproject(topRight));
     });
 
     changesets.sort(function (a, b) {
@@ -119,10 +122,20 @@ OSM.History = function(map) {
     for (var i = 0; i < changesets.length; ++i) {
       var changeset = changesets[i],
         rect = L.rectangle(changeset.bounds,
-          {weight: 2, color: "#FF9500", opacity: 1, fillColor: "#FFFFBF", fillOpacity: 0});
+          {weight: 2, color: "#FF9500", opacity: 1, fillColor: "#FFFFAF", fillOpacity: 0});
       rect.id = changeset.id;
       rect.addTo(group);
     }
+  }
+
+  function updateMap() {
+    changesets = $("[data-changeset]").map(function (index,element) {
+      return $(element).data('changeset');
+    }).get().filter(function (changeset) {
+      return changeset.bbox;
+    });
+
+    updateBounds();
 
     if (window.location.pathname !== '/history') {
       var bounds = group.getBounds();
@@ -142,6 +155,8 @@ OSM.History = function(map) {
       map.on("moveend", update);
     }
 
+    map.on("zoomend", updateBounds);
+
     update();
   };