Merge remote-tracking branch 'origin/master' into fix_triangulation

Conflicts:
	src/ol/TileCache.js

config/jsdoc/api/index.md

@@ -34,7 +34,7 @@ Interactions for <a href="module-ol_Feature-Feature.html">vector features</a>
 <tr><th>Projections</th><th>Observable objects</th><th>Other components</th></tr>
 <tr><td><p>All coordinates and extents need to be provided in view projection (default: EPSG:3857). To transform, use <a href="module-ol_proj.html#.transform">ol/proj#transform()</a> and <a href="module-ol_proj.html#.transformExtent">ol/proj#transformExtent()</a>.</p>
 <a href="module-ol_proj.html">ol/proj</a></td>
-<td><p>Changes to all <a href="module-ol_Object-BaseObject.html">ol/Object</a>s can be observed by calling the <a href="module-ol_Object-BaseObject.html#on">object.on('propertychange')</a> method.  Listeners receive an <a href="module-ol_Object-ObjectEvent.html">ol/Object.ObjectEvent</a> with information on the changed property and old value.</p>
+<td><p>Changes to all <a href="module-ol_Object-BaseObject.html">ol/Object</a>s can be observed by calling the <a href="module-ol_Object-BaseObject.html#on">object.on('propertychange')</a> method.  Listeners receive an <a href="module-ol_Object.ObjectEvent.html">ol/Object.ObjectEvent</a> with information on the changed property and old value.</p>
 <td>
 <a href="module-ol_Geolocation.html">ol/Geolocation</a><br>
 <a href="module-ol_Overlay-Overlay.html">ol/Overlay</a><br></td>

config/jsdoc/api/template/tmpl/observables.tmpl

@@ -8,7 +8,7 @@
     <th>Name</th>
     <th>Type</th>
     <th>Settable</th>
-    <th><a href="module-ol_Object-ObjectEvent.html">ol/Object.ObjectEvent</a> type</th>
+    <th><a href="module-ol_Object.ObjectEvent.html">ol/Object.ObjectEvent</a> type</th>
     <th class="last">Description</th>
   </tr>
   </thead>

doc/errors/index.md

@@ -111,7 +111,7 @@ Features for `updates` must have an id set by the feature reader or `ol.Feature#
 
 ### 28
 
-`renderMode` must be `'image'` or `'hybrid'`.
+`renderMode` must be `'image'`, `'hybrid'` or `'vector'`.
 
 ### 29
 

examples/feature-move-animation.html

@@ -6,10 +6,10 @@ docs: >
   This example shows how to use <b>postrender</b> events and a <b>vector context</b> to
   animate a marker feature along a line. In this example an encoded polyline
   is being used.
-tags: "animation, feature, postrender, polyline"
+tags: "animation, feature, postrender, polyline, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>
 <label for="speed">

examples/feature-move-animation.js

@@ -4,7 +4,7 @@ import View from '../src/ol/View.js';
 import Polyline from '../src/ol/format/Polyline.js';
 import Point from '../src/ol/geom/Point.js';
 import {Tile as TileLayer, Vector as VectorLayer} from '../src/ol/layer.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import VectorSource from '../src/ol/source/Vector.js';
 import {Circle as CircleStyle, Fill, Icon, Stroke, Style} from '../src/ol/style.js';
 import {getVectorContext} from '../src/ol/render.js';
@@ -121,6 +121,10 @@ const vectorLayer = new VectorLayer({
   }
 });
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const center = [-5639523.95, -3501274.52];
 const map = new Map({
   target: document.getElementById('map'),
@@ -132,9 +136,10 @@ const map = new Map({
   }),
   layers: [
     new TileLayer({
-      source: new BingMaps({
-        imagerySet: 'AerialWithLabelsOnDemand',
-        key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5'
+      source: new XYZ({
+        attributions: attributions,
+        url: 'https://api.maptiler.com/maps/hybrid/{z}/{x}/{y}.jpg?key=' + key,
+        tileSize: 512
       })
     }),
     vectorLayer

examples/full-screen-drag-rotate-and-zoom.html

@@ -5,9 +5,9 @@ shortdesc: Example of drag rotate and zoom control with full screen effect.
 docs: >
   <p>Hold down <code>Shift+Drag</code> to rotate and zoom.  Click the button in the top right corner to go full screen.  Then do the <code>Shift+Drag</code> thing again.</p>
   <p>If there is no button on the map, your browser does not support the <a href="http://caniuse.com/#feat=fullscreen">Full Screen API</a>.</p>
-tags: "full-screen, drag, rotate, zoom, bing, bing-maps"
+tags: "full-screen, drag, rotate, zoom, xyz, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/full-screen-drag-rotate-and-zoom.js

@@ -3,9 +3,13 @@ import View from '../src/ol/View.js';
 import {defaults as defaultControls, FullScreen} from '../src/ol/control.js';
 import {defaults as defaultInteractions, DragRotateAndZoom} from '../src/ol/interaction.js';
 import TileLayer from '../src/ol/layer/Tile.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const map = new Map({
   controls: defaultControls().extend([
     new FullScreen()
@@ -15,13 +19,13 @@ const map = new Map({
   ]),
   layers: [
     new TileLayer({
-      source: new BingMaps({
-        key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-        imagerySet: 'Aerial'
+      source: new XYZ({
+        attributions: attributions,
+        url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+        maxZoom: 20
       })
     })
   ],
-  // Use the canvas renderer because it's currently the fastest
   target: 'map',
   view: new View({
     center: [-33519607, 5616436],

examples/full-screen.html

@@ -5,9 +5,9 @@ shortdesc: Example of a full screen control.
 docs: >
   <p>Click the control in the top right corner to go full screen.  Click it again to exit full screen.</p>
   <p>If there is no button on the map, your browser does not support the <a href="http://caniuse.com/#feat=fullscreen">Full Screen API</a>.</p>
-tags: "full-screen, bing, bing-maps"
+tags: "full-screen, xyz, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/full-screen.js

@@ -2,7 +2,7 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import {defaults as defaultControls, FullScreen} from '../src/ol/control.js';
 import TileLayer from '../src/ol/layer/Tile.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 
 
 const view = new View({
@@ -10,15 +10,20 @@ const view = new View({
   zoom: 14
 });
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const map = new Map({
   controls: defaultControls().extend([
     new FullScreen()
   ]),
   layers: [
     new TileLayer({
-      source: new BingMaps({
-        key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-        imagerySet: 'Aerial'
+      source: new XYZ({
+        attributions: attributions,
+        url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+        maxZoom: 20
       })
     })
   ],

examples/gpx.html

@@ -4,10 +4,10 @@ title: GPX Data
 shortdesc: Example of using the GPX source.
 docs: >
   Example of using the GPX source.
-tags: "GPX"
+tags: "GPX, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>
 <div id="info">&nbsp;</div>

examples/gpx.js

@@ -2,14 +2,19 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import GPX from '../src/ol/format/GPX.js';
 import {Tile as TileLayer, Vector as VectorLayer} from '../src/ol/layer.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import VectorSource from '../src/ol/source/Vector.js';
 import {Circle as CircleStyle, Fill, Stroke, Style} from '../src/ol/style.js';
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const raster = new TileLayer({
-  source: new BingMaps({
-    imagerySet: 'Aerial',
-    key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5'
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20
   })
 });
 

examples/image-filter.html

@@ -6,10 +6,10 @@ docs: >
   <p>Layer rendering can be manipulated in <code>prerender</code> and <code>postrender</code> event listeners.
   These listeners get an event with a reference to the Canvas rendering context.
   In this example, the <code>postrender</code> listener applies a filter to the image data.</p>
-tags: "filter, image manipulation"
+tags: "filter, image manipulation, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>
 <select id="kernel" name="kernel">

examples/image-filter.js

@@ -2,12 +2,19 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
 import {fromLonLat} from '../src/ol/proj.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 
-const key = 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5';
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const imagery = new TileLayer({
-  source: new BingMaps({key: key, imagerySet: 'Aerial'})
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20,
+    crossOrigin: ''
+  })
 });
 
 const map = new Map({

examples/interaction-options.html

@@ -1,14 +0,0 @@
----
-layout: example.html
-title: Interaction Options
-shortdesc: Shows interaction options for custom scroll and zoom behavior.
-docs: >
-  This example uses a custom `ol/interaction/defaults` configuration:
-  by default, wheel/trackpad zoom and drag panning is always active, which
-  can be unexpected on pages with a lot of scrollable content and an embedded
-  map. To perform wheel/trackpad zoom and drag-pan actions only when the map
-  has the focus, set `onFocusOnly: true` as option. This requires a map div
-  with a `tabindex` attribute set.
-tags: "trackpad, mousewheel, zoom, scroll, interaction, fractional"
----
-<div tabindex="1" id="map" class="map"></div>

examples/layer-clipping.js

@@ -18,11 +18,17 @@ const map = new Map({
 
 osm.on('prerender', function(event) {
   const ctx = event.context;
+
+  // calculate the pixel ratio and rotation of the canvas
+  const matrix = event.inversePixelTransform;
+  const canvasPixelRatio = Math.sqrt(matrix[0] * matrix[0] + matrix[1] * matrix[1]);
+  const canvasRotation = -Math.atan2(matrix[1], matrix[0]);
   ctx.save();
-  const pixelRatio = event.frameState.pixelRatio;
-  const size = map.getSize();
-  ctx.translate(size[0] / 2 * pixelRatio, size[1] / 2 * pixelRatio);
-  ctx.scale(3 * pixelRatio, 3 * pixelRatio);
+  // center the canvas and remove rotation to position clipping
+  ctx.translate(ctx.canvas.width / 2, ctx.canvas.height / 2);
+  ctx.rotate(-canvasRotation);
+
+  ctx.scale(3 * canvasPixelRatio, 3 * canvasPixelRatio);
   ctx.translate(-75, -80);
   ctx.beginPath();
   ctx.moveTo(75, 40);
@@ -34,8 +40,11 @@ osm.on('prerender', function(event) {
   ctx.bezierCurveTo(85, 25, 75, 37, 75, 40);
   ctx.clip();
   ctx.translate(75, 80);
-  ctx.scale(1 / 3 / pixelRatio, 1 / 3 / pixelRatio);
-  ctx.translate(-size[0] / 2 * pixelRatio, -size[1] / 2 * pixelRatio);
+  ctx.scale(1 / 3 / canvasPixelRatio, 1 / 3 / canvasPixelRatio);
+
+  // reapply canvas rotation and position
+  ctx.rotate(canvasRotation);
+  ctx.translate(-ctx.canvas.width / 2, -ctx.canvas.height / 2);
 });
 
 osm.on('postrender', function(event) {

examples/layer-spy.html

@@ -8,9 +8,9 @@ docs: >
   In this example, the <code>prerender</code> listener sets a clipping mask around the most
   recent mouse position, giving you a spyglass effect for viewing one layer over another.</p>
   <p>Move around the map to see the effect.  Use the ↑ up and ↓ down arrow keys to adjust the spyglass size.</p>
-tags: "spy, image manipulation"
+tags: "spy, image manipulation, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/layer-spy.js

@@ -2,16 +2,28 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
 import {fromLonLat} from '../src/ol/proj.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
+import {getRenderPixel} from '../src/ol/render.js';
 
-const key = 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5';
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const roads = new TileLayer({
-  source: new BingMaps({key: key, imagerySet: 'RoadOnDemand'})
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/maps/streets/{z}/{x}/{y}.png?key=' + key,
+    tileSize: 512,
+    maxZoom: 22
+  })
 });
 
 const imagery = new TileLayer({
-  source: new BingMaps({key: key, imagerySet: 'Aerial'})
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20
+  })
 });
 
 const container = document.getElementById('map');
@@ -54,14 +66,15 @@ container.addEventListener('mouseout', function() {
 // before rendering the layer, do some clipping
 imagery.on('prerender', function(event) {
   const ctx = event.context;
-  const pixelRatio = event.frameState.pixelRatio;
   ctx.save();
   ctx.beginPath();
   if (mousePosition) {
     // only show a circle around the mouse
-    ctx.arc(mousePosition[0] * pixelRatio, mousePosition[1] * pixelRatio,
-      radius * pixelRatio, 0, 2 * Math.PI);
-    ctx.lineWidth = 5 * pixelRatio;
+    const pixel = getRenderPixel(event, mousePosition);
+    const offset = getRenderPixel(event, [mousePosition[0] + radius, mousePosition[1]]);
+    const canvasRadius = Math.sqrt(Math.pow(offset[0] - pixel[0], 2) + Math.pow(offset[1] - pixel[1], 2));
+    ctx.arc(pixel[0], pixel[1], canvasRadius, 0, 2 * Math.PI);
+    ctx.lineWidth = 5 * canvasRadius / radius;
     ctx.strokeStyle = 'rgba(0,0,0,0.5)';
     ctx.stroke();
   }

examples/layer-swipe.html

@@ -4,10 +4,10 @@ title: Layer Swipe
 shortdesc: Example of a Layer swipe map.
 docs: >
   Example of a Layer swipe map.
-tags: "swipe, openstreetmap"
+tags: "swipe, openstreetmap, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>
 <input id="swipe" type="range" style="width: 100%">

examples/layer-swipe.js

@@ -1,21 +1,28 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
 import OSM from '../src/ol/source/OSM.js';
+import XYZ from '../src/ol/source/XYZ.js';
+import {getRenderPixel} from '../src/ol/render.js';
 
 const osm = new TileLayer({
   source: new OSM()
 });
-const bing = new TileLayer({
-  source: new BingMaps({
-    key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-    imagerySet: 'Aerial'
+
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
+const aerial = new TileLayer({
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20
   })
 });
 
 const map = new Map({
-  layers: [osm, bing],
+  layers: [osm, aerial],
   target: 'map',
   view: new View({
     center: [0, 0],
@@ -25,17 +32,26 @@ const map = new Map({
 
 const swipe = document.getElementById('swipe');
 
-bing.on('prerender', function(event) {
+aerial.on('prerender', function(event) {
   const ctx = event.context;
-  const width = ctx.canvas.width * (swipe.value / 100);
+  const mapSize = map.getSize();
+  const width = mapSize[0] * (swipe.value / 100);
+  const tl = getRenderPixel(event, [width, 0]);
+  const tr = getRenderPixel(event, [mapSize[0], 0]);
+  const bl = getRenderPixel(event, [width, mapSize[1]]);
+  const br = getRenderPixel(event, mapSize);
 
   ctx.save();
   ctx.beginPath();
-  ctx.rect(width, 0, ctx.canvas.width - width, ctx.canvas.height);
+  ctx.moveTo(tl[0], tl[1]);
+  ctx.lineTo(bl[0], bl[1]);
+  ctx.lineTo(br[0], br[1]);
+  ctx.lineTo(tr[0], tr[1]);
+  ctx.closePath();
   ctx.clip();
 });
 
-bing.on('postrender', function(event) {
+aerial.on('postrender', function(event) {
   const ctx = event.context;
   ctx.restore();
 });

examples/magnify.html

@@ -6,9 +6,9 @@ docs: >
   <p>This example makes use of the <code>postrender</code> event listener to
   oversample imagery in a circle around the pointer location.  Listeners for this event have access to the Canvas context and can manipulate image data.</p>
   <p>Move around the map to see the effect.  Use the ↑ up and ↓ down arrow keys to adjust the magnified circle size.</p>
-tags: "magnify, image manipulation"
+tags: "magnify, image manipulation, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/magnify.js

@@ -2,13 +2,20 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
 import {fromLonLat} from '../src/ol/proj.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import {getRenderPixel} from '../src/ol/render.js';
 
-const key = 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5';
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const imagery = new TileLayer({
-  source: new BingMaps({key: key, imagerySet: 'Aerial'})
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20,
+    crossOrigin: ''
+  })
 });
 
 const container = document.getElementById('map');

examples/page-scroll.html

@@ -0,0 +1,10 @@
+---
+layout: example.html
+title: Page Scrolling
+shortdesc: Shows a map that does not interrupt page scrolling.
+docs: >
+  To perform wheel/trackpad zoom and drag-pan actions only when the map
+  has the focus, configure your map div with a `tabindex` attribute.
+tags: "trackpad, mousewheel, zoom, scroll, page"
+---
+<div tabindex="1" id="map" class="map"></div>

examples/page-scroll.js

@@ -1,14 +1,10 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
-import {defaults as defaultInteractions} from '../src/ol/interaction.js';
 import TileLayer from '../src/ol/layer/Tile.js';
 import OSM from '../src/ol/source/OSM.js';
 
 
 const map = new Map({
-  interactions: defaultInteractions({
-    onFocusOnly: true
-  }),
   layers: [
     new TileLayer({
       source: new OSM()

examples/popup.css

@@ -1,8 +1,7 @@
 .ol-popup {
   position: absolute;
   background-color: white;
-  -webkit-filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
-  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
+  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
   padding: 15px;
   border-radius: 10px;
   border: 1px solid #cccccc;

examples/raster.html

@@ -18,12 +18,12 @@ docs: >
     those pixels based on a threshold value (values above the
     threshold are green and those below are transparent).
   </p>
-tags: "raster, pixel"
+tags: "raster, pixel, maptiler"
 resources:
   - https://unpkg.com/d3@4.12.0/build/d3.js
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div class="rel">
   <div id="map" class="map"></div>

examples/raster.js

@@ -1,7 +1,7 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import {Image as ImageLayer, Tile as TileLayer} from '../src/ol/layer.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import RasterSource from '../src/ol/source/Raster.js';
 
 const minVgi = 0;
@@ -46,9 +46,16 @@ function summarize(value, counts) {
 /**
  * Use aerial imagery as the input data for the raster source.
  */
-const bing = new BingMaps({
-  key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-  imagerySet: 'Aerial'
+
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
+const aerial = new XYZ({
+  attributions: attributions,
+  url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+  maxZoom: 20,
+  crossOrigin: ''
 });
 
 
@@ -57,7 +64,7 @@ const bing = new BingMaps({
  * be colored green.
  */
 const raster = new RasterSource({
-  sources: [bing],
+  sources: [aerial],
   /**
    * Run calculations on pixel data.
    * @param {Array} pixels List of pixels (one per source).
@@ -110,7 +117,7 @@ raster.on('afteroperations', function(event) {
 const map = new Map({
   layers: [
     new TileLayer({
-      source: bing
+      source: aerial
     }),
     new ImageLayer({
       source: raster

examples/region-growing.html

@@ -23,10 +23,10 @@ docs: >
     This example also shows how an additional function can be made available
     to the operation.
   </p>
-tags: "raster, region growing"
+tags: "raster, region growing, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map" style="cursor: pointer"></div>
 <table class="controls">

examples/region-growing.js

@@ -2,7 +2,7 @@ import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import {Image as ImageLayer, Tile as TileLayer} from '../src/ol/layer.js';
 import {fromLonLat} from '../src/ol/proj.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import RasterSource from '../src/ol/source/Raster.js';
 
 function growRegion(inputs, data) {
@@ -72,10 +72,17 @@ function next4Edges(edge) {
   ];
 }
 
-const key = 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5';
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const imagery = new TileLayer({
-  source: new BingMaps({key: key, imagerySet: 'Aerial'})
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20,
+    crossOrigin: ''
+  })
 });
 
 const raster = new RasterSource({

examples/reprojection.js

@@ -55,15 +55,6 @@ proj54009.setExtent([-18e6, -9e6, 18e6, 9e6]);
 
 const layers = {};
 
-layers['bng'] = new TileLayer({
-  source: new XYZ({
-    projection: 'EPSG:27700',
-    url: 'https://tileserver.maptiler.com/miniscale/{z}/{x}/{y}.png',
-    crossOrigin: '',
-    maxZoom: 6
-  })
-});
-
 layers['osm'] = new TileLayer({
   source: new OSM()
 });
@@ -95,9 +86,11 @@ layers['wms21781'] = new TileLayer({
 });
 
 const parser = new WMTSCapabilities();
-const url = 'https://map1.vis.earthdata.nasa.gov/wmts-arctic/' +
+
+layers['wmts3413'] = new TileLayer();
+const urlA = 'https://map1.vis.earthdata.nasa.gov/wmts-arctic/' +
     'wmts.cgi?SERVICE=WMTS&request=GetCapabilities';
-fetch(url).then(function(response) {
+fetch(urlA).then(function(response) {
   return response.text();
 }).then(function(text) {
   const result = parser.read(text);
@@ -108,9 +101,23 @@ fetch(url).then(function(response) {
   options.crossOrigin = '';
   options.projection = 'EPSG:3413';
   options.wrapX = false;
-  layers['wmts3413'] = new TileLayer({
-    source: new WMTS(options)
+  layers['wmts3413'].setSource(new WMTS(options));
+});
+
+layers['bng'] = new TileLayer();
+const urlB = 'https://tiles.arcgis.com/tiles/qHLhLQrcvEnxjtPr/arcgis/rest/services/OS_Open_Raster/MapServer/WMTS';
+fetch(urlB).then(function(response) {
+  return response.text();
+}).then(function(text) {
+  const result = parser.read(text);
+  const options = optionsFromCapabilities(result, {
+    layer: 'OS_Open_Raster'
   });
+  options.attributions = 'Contains OS data © Crown Copyright and database right 2019';
+  options.crossOrigin = '';
+  options.projection = 'EPSG:27700';
+  options.wrapX = false;
+  layers['bng'].setSource(new WMTS(options));
 });
 
 layers['grandcanyon'] = new TileLayer({

examples/sea-level.html

@@ -8,6 +8,11 @@ docs: >
     <a href="https://www.mapbox.com/blog/terrain-rgb/">Mapbox Terrain-RGB tiles</a>
     to "flood" areas below the elevation shown on the sea level slider.
   </p>
+  <p>
+    <code>ol/source/Raster</code> can take either a tile source or layer.
+    In this case a layer is used to allow disabling at the <code>prerender</code> event
+    of image smoothing which would change the precise elevation values set in the pixels.
+  </p>
 tags: "raster, pixel operation, flood"
 cloak:
   - key: pk.eyJ1IjoidHNjaGF1YiIsImEiOiJjaW5zYW5lNHkxMTNmdWttM3JyOHZtMmNtIn0.CDIBD8H-G2Gf-cPkIuWtRg

examples/sea-level.js

@@ -22,9 +22,15 @@ function flood(pixels, data) {
 }
 
 const key = 'pk.eyJ1IjoidHNjaGF1YiIsImEiOiJjaW5zYW5lNHkxMTNmdWttM3JyOHZtMmNtIn0.CDIBD8H-G2Gf-cPkIuWtRg';
-const elevation = new XYZ({
-  url: 'https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.pngraw?access_token=' + key,
-  crossOrigin: 'anonymous'
+const elevation = new TileLayer({
+  source: new XYZ({
+    url: 'https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.pngraw?access_token=' + key,
+    crossOrigin: 'anonymous'
+  })
+});
+elevation.on('prerender', function(evt) {
+  evt.context.imageSmoothingEnabled = false;
+  evt.context.msImageSmoothingEnabled = false;
 });
 
 const raster = new RasterSource({

examples/side-by-side.html

@@ -4,10 +4,10 @@ title: Shared Views
 shortdesc: Two maps share view properties
 docs: >
   Two maps (one Road, one Aerial) share the same center, resolution and rotation.
-tags: "side-by-side, bing, bing-maps"
+tags: "side-by-side, xyz, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div class="wrapper">
   <div class="half">

examples/side-by-side.js

@@ -1,21 +1,26 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
+
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const roadLayer = new TileLayer({
-  source: new BingMaps({
-    key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-    imagerySet: 'RoadOnDemand',
-    maxZoom: 19
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/maps/streets/{z}/{x}/{y}.png?key=' + key,
+    tileSize: 512,
+    maxZoom: 22
   })
 });
 
 const aerialLayer = new TileLayer({
-  source: new BingMaps({
-    key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-    imagerySet: 'Aerial',
-    maxZoom: 19
+  source: new XYZ({
+    attributions: attributions,
+    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+    maxZoom: 20
   })
 });
 

examples/street-labels.html

@@ -4,9 +4,9 @@ title: Street Labels
 shortdesc: Render street names.
 docs: >
   Example showing the use of a text style with `placement: 'line'` to render text along a path.
-tags: "vector, label, streets"
+tags: "vector, label, streets, maptiler"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/street-labels.js

@@ -3,7 +3,7 @@ import View from '../src/ol/View.js';
 import {getCenter} from '../src/ol/extent.js';
 import GeoJSON from '../src/ol/format/GeoJSON.js';
 import {Tile as TileLayer, Vector as VectorLayer} from '../src/ol/layer.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 import VectorSource from '../src/ol/source/Vector.js';
 import {Fill, Style, Text} from '../src/ol/style.js';
 
@@ -17,12 +17,17 @@ const style = new Style({
   })
 });
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const viewExtent = [1817379, 6139595, 1827851, 6143616];
 const map = new Map({
   layers: [new TileLayer({
-    source: new BingMaps({
-      key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-      imagerySet: 'Aerial'
+    source: new XYZ({
+      attributions: attributions,
+      url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+      maxZoom: 20
     })
   }), new VectorLayer({
     declutter: true,

examples/svg-layer.css

@@ -0,0 +1,7 @@
+#map {
+  background: black;
+}
+
+.svg-layer path:hover {
+  opacity: 0.4;
+}

examples/svg-layer.html

@@ -0,0 +1,9 @@
+---
+layout: example.html
+title: SVG Layer
+shortdesc: Example of a map with an interactive svg layer.
+docs: >
+  With a plain `ol/Layer` and a `render` function, we can use an interactive svg as layer. Hover over countries to see the interactivity that is defined purely with a css `:hover` pseudo-class.
+tags: "svg, layer, render, transform"
+---
+<div id="map" class="map"></div>

examples/svg-layer.js

@@ -0,0 +1,48 @@
+import Map from '../src/ol/Map.js';
+import View from '../src/ol/View.js';
+import Layer from '../src/ol/layer/Layer.js';
+import {composeCssTransform} from '../src/ol/transform.js';
+
+const map = new Map({
+  target: 'map',
+  view: new View({
+    center: [0, 0],
+    extent: [-180, -90, 180, 90],
+    projection: 'EPSG:4326',
+    zoom: 2
+  })
+});
+
+const svgContainer = document.createElement('div');
+const xhr = new XMLHttpRequest();
+xhr.open('GET', 'data/world.svg');
+xhr.addEventListener('load', function() {
+  const svg = xhr.responseXML.documentElement;
+  svgContainer.ownerDocument.importNode(svg);
+  svgContainer.appendChild(svg);
+});
+xhr.send();
+
+const width = 2560;
+const height = 1280;
+const svgResolution = 360 / width;
+svgContainer.style.width = width + 'px';
+svgContainer.style.height = height + 'px';
+svgContainer.style.transformOrigin = 'top left';
+svgContainer.className = 'svg-layer';
+
+map.addLayer(new Layer({
+  render: function(frameState) {
+    const scale = svgResolution / frameState.viewState.resolution;
+    const center = frameState.viewState.center;
+    const size = frameState.size;
+    const cssTransform = composeCssTransform(
+      size[0] / 2, size[1] / 2,
+      scale, scale,
+      frameState.viewState.rotation,
+      -center[0] / svgResolution - width / 2, center[1] / svgResolution - height / 2);
+    svgContainer.style.transform = cssTransform;
+    svgContainer.style.opacity = this.getOpacity();
+    return svgContainer;
+  }
+}));

examples/templates/example.html

@@ -108,7 +108,14 @@
       <div class="row-fluid">
         <a class="codepen-button pull-right"><i class="fa fa-codepen"></i> Edit</a>
         <div class="span12">
-          <h4 id="title">{{ title }}</h4>
+          <h4 id="title">
+            {{ title }}
+          </h4>
+          <p class="tags">
+            {{#each tags}}
+              <a href="./index.html?q={{.}}" class="label label-primary">{{.}}</a>
+            {{/each}}
+          </p>
           {{{ contents }}}
         </div>
         <form method="POST" id="codepen-form" target="_blank" action="https://codesandbox.io/api/v1/sandboxes/define">

examples/two-finger-pan-scroll.html

@@ -0,0 +1,12 @@
+---
+layout: example.html
+title: Panning and page scrolling
+shortdesc: Shows a map that allows page scrolling unless two fingers or Cmd/Ctrl are used to pan the map.
+docs: >
+  This example shows a common behavior for page scrolling: on touch devices, when one finger
+  is placed on the map, it can be used to scroll the page. Only two fingers will perform drag pan.
+  For mouse or trackpad devices, the platform modifier key (Cmd or Ctrl) will enable drag pan on
+  the map, otherwise the page will scroll.
+tags: "trackpad, mousewheel, zoom, scroll, page"
+---
+<div id="map" class="map"></div>

examples/two-finger-pan-scroll.js

@@ -0,0 +1,29 @@
+import Map from '../src/ol/Map.js';
+import View from '../src/ol/View.js';
+import TileLayer from '../src/ol/layer/Tile.js';
+import OSM from '../src/ol/source/OSM.js';
+import {defaults, DragPan, MouseWheelZoom} from '../src/ol/interaction.js';
+import {platformModifierKeyOnly} from '../src/ol/events/condition.js';
+
+const map = new Map({
+  interactions: defaults({dragPan: false, mouseWheelZoom: false}).extend([
+    new DragPan({
+      condition: function(event) {
+        return this.getPointerCount() === 2 || platformModifierKeyOnly(event);
+      }
+    }),
+    new MouseWheelZoom({
+      condition: platformModifierKeyOnly
+    })
+  ]),
+  layers: [
+    new TileLayer({
+      source: new OSM()
+    })
+  ],
+  target: 'map',
+  view: new View({
+    center: [0, 0],
+    zoom: 2
+  })
+});

examples/vector-tile-selection.html

@@ -5,7 +5,11 @@ shortdesc: Select features from vector tiles.
 docs: >
   <p>
     Click a rendered vector-tile feature to highlight it on the map. Click on an empty spot (ocean) to reset the selection.
-    By changing the action type to "Multi Select" you can select multiple features at a time.
+    By changing the action type to "Multi Select" you can select multiple features at a time. With "Single Select on hover",
+    features will be higlighted when the pointer is above them.
+  </p><p>
+    The selection layer is configured with `renderMode: 'vector'` for better performance on frequent redraws,
+    i.e. when 'Single select on hover' is selected.
   </p>
 tags: "vector tiles, selection"
 ---
@@ -15,5 +19,6 @@ tags: "vector tiles, selection"
   <select id="type" class="form-control">
     <option value="singleselect" selected>Single Select</option>
     <option value="multiselect">Multi Select</option>
+    <option value="singleselect-hover">Single Select on hover</option>
   </select>
 </form>

examples/vector-tile-selection.js

@@ -8,6 +8,25 @@ import {Fill, Stroke, Style} from '../src/ol/style.js';
 // lookup for selection objects
 let selection = {};
 
+const country = new Style({
+  stroke: new Stroke({
+    color: 'gray',
+    width: 1
+  }),
+  fill: new Fill({
+    color: 'rgba(20,20,20,0.9)'
+  })
+});
+const selectedCountry = new Style({
+  stroke: new Stroke({
+    color: 'rgba(200,20,20,0.8)',
+    width: 2
+  }),
+  fill: new Fill({
+    color: 'rgba(200,20,20,0.4)'
+  })
+});
+
 const vtLayer = new VectorTileLayer({
   declutter: true,
   source: new VectorTileSource({
@@ -18,18 +37,7 @@ const vtLayer = new VectorTileLayer({
     url: 'https://ahocevar.com/geoserver/gwc/service/tms/1.0.0/' +
       'ne:ne_10m_admin_0_countries@EPSG%3A900913@pbf/{z}/{x}/{-y}.pbf'
   }),
-  style: function(feature) {
-    const selected = !!selection[feature.getId()];
-    return new Style({
-      stroke: new Stroke({
-        color: selected ? 'rgba(200,20,20,0.8)' : 'gray',
-        width: selected ? 2 : 1
-      }),
-      fill: new Fill({
-        color: selected ? 'rgba(200,20,20,0.2)' : 'rgba(20,20,20,0.9)'
-      })
-    });
-  }
+  style: country
 });
 
 const map = new Map({
@@ -39,18 +47,34 @@ const map = new Map({
   target: 'map',
   view: new View({
     center: [0, 0],
-    zoom: 2
+    zoom: 2,
+    multiWorld: true
   })
 });
 
+// Selection
+const selectionLayer = new VectorTileLayer({
+  map: map,
+  renderMode: 'vector',
+  source: vtLayer.getSource(),
+  style: function(feature) {
+    if (feature.getId() in selection) {
+      return selectedCountry;
+    }
+  }
+});
+
 const selectElement = document.getElementById('type');
 
-map.on('click', function(event) {
+map.on(['click', 'pointermove'], function(event) {
+  if (selectElement.value === 'singleselect-hover' && event.type !== 'pointermove' ||
+      selectElement.value !== 'singleselect-hover' && event.type === 'pointermove') {
+    return;
+  }
   vtLayer.getFeatures(event.pixel).then(function(features) {
     if (!features.length) {
       selection = {};
-      // force redraw of layer style
-      vtLayer.setStyle(vtLayer.getStyle());
+      selectionLayer.changed();
       return;
     }
     const feature = features[0];
@@ -59,14 +83,12 @@ map.on('click', function(event) {
     }
     const fid = feature.getId();
 
-    if (selectElement.value === 'singleselect') {
+    if (selectElement.value.startsWith('singleselect')) {
       selection = {};
     }
     // add selected feature to lookup
     selection[fid] = feature;
 
-    // force redraw of layer style
-    vtLayer.setStyle(vtLayer.getStyle());
+    selectionLayer.changed();
   });
-
 });

examples/webgl-points-layer.html

@@ -3,19 +3,67 @@ layout: example.html
 title: WebGL points layer
 shortdesc: Using a WebGL-optimized layer to render a large quantities of points
 docs: >
-  <p>This example shows how to use a <code>WebGLPointsLayer</code> to show a large amount of points on the map.</p>
-  <p>The layer is given a style in JSON format which allows a certain level of customization of the final reprensentation.</p>
-  <p>
-    The following operators can be used for numerical values:
-    <ul>
-      <li><code>["get", "attributeName"]</code> fetches a numeric attribute value for each feature</li>
-      <li><code>["+", value, value]</code> adds two values (which an either be numeric, or the result of another operator)</li>
-      <li><code>["*", value, value]</code> multiplies two values</li>
-      <li><code>["clamp", value, min, max]</code> outputs a value between <code>min</code> and <code>max</code></li>
-      <li><code>["stretch", value, low1, high1, low2, high2]</code> outputs a value which has been mapped from the
-        <code>low1..high1</code> range to the <code>low2..high2</code> range</li>
-    </ul>
-  </p>
+  This example shows how to use a `WebGLPointsLayer` to show a large amount of points on the map.
+  The layer is given a style in JSON format which allows a certain level of customization of the final reprensentation.
+
+  The following operators can be used:
+
+   * Reading operators:
+     * `['get', 'attributeName']` fetches a feature attribute (it will be prefixed by `a_` in the shader)
+       Note: those will be taken from the attributes provided to the renderer
+     * `['var', 'varName']` fetches a value from the style variables, or 0 if undefined
+     * `['time']` returns the time in seconds since the creation of the layer
+     * `['zoom']` returns the current zoom level
+     * `['resolution']` returns the current resolution
+
+   * Math operators:
+     * `['*', value1, value2]` multiplies `value1` by `value2`
+     * `['/', value1, value2]` divides `value1` by `value2`
+     * `['+', value1, value2]` adds `value1` and `value2`
+     * `['-', value1, value2]` subtracts `value2` from `value1`
+     * `['clamp', value, low, high]` clamps `value` between `low` and `high`
+     * `['%', value1, value2]` returns the result of `value1 % value2` (modulo)
+     * `['^', value1, value2]` returns the value of `value1` raised to the `value2` power
+
+   * Transform operators:
+     * `['case', condition1, output1, ...conditionN, outputN, fallback]` selects the first output whose corresponding
+       condition evaluates to `true`. If no match is found, returns the `fallback` value.
+       All conditions should be `boolean`, output and fallback can be any kind.
+     * `['match', input, match1, output1, ...matchN, outputN, fallback]` compares the `input` value against all
+       provided `matchX` values, returning the output associated with the first valid match. If no match is found,
+       returns the `fallback` value.
+       `input` and `matchX` values must all be of the same type, and can be `number` or `string`. `outputX` and
+       `fallback` values must be of the same type, and can be of any kind.
+     * `['interpolate', interpolation, input, stop1, output1, ...stopN, outputN]` returns a value by interpolating between
+       pairs of inputs and outputs; `interpolation` can either be `['linear']` or `['exponential', base]` where `base` is
+       the rate of increase from stop A to stop B (i.e. power to which the interpolation ratio is raised); a value
+       of 1 is equivalent to `['linear']`.
+       `input` and `stopX` values must all be of type `number`. `outputX` values can be `number` or `color` values.
+       Note: `input` will be clamped between `stop1` and `stopN`, meaning that all output values will be comprised
+       between `output1` and `outputN`.
+
+   * Logical operators:
+     * `['<', value1, value2]` returns `true` if `value1` is strictly lower than `value2`, or `false` otherwise.
+     * `['<=', value1, value2]` returns `true` if `value1` is lower than or equals `value2`, or `false` otherwise.
+     * `['>', value1, value2]` returns `true` if `value1` is strictly greater than `value2`, or `false` otherwise.
+     * `['>=', value1, value2]` returns `true` if `value1` is greater than or equals `value2`, or `false` otherwise.
+     * `['==', value1, value2]` returns `true` if `value1` equals `value2`, or `false` otherwise.
+     * `['!=', value1, value2]` returns `true` if `value1` does not equal `value2`, or `false` otherwise.
+     * `['!', value1]` returns `false` if `value1` is `true` or greater than `0`, or `true` otherwise.
+     * `['between', value1, value2, value3]` returns `true` if `value1` is contained between `value2` and `value3`
+       (inclusively), or `false` otherwise.
+
+   * Conversion operators:
+     * `['array', value1, ...valueN]` creates a numerical array from `number` values; please note that the amount of
+       values can currently only be 2, 3 or 4.
+     * `['color', red, green, blue, alpha]` creates a `color` value from `number` values; the `alpha` parameter is
+       optional; if not specified, it will be set to 1.
+       Note: `red`, `green` and `blue` components must be values between 0 and 255; `alpha` between 0 and 1.
+   Values can either be literals or another operator, as they will be evaluated recursively.
+   Literal values can be of the following types:
+    * `boolean`
+    * `number`
+    * `string`
 
 tags: "webgl, point, layer, feature"
 experimental: true
@@ -29,6 +77,7 @@ experimental: true
   <option value="triangles-latitude">Triangles, color related to latitude</option>
   <option value="circles">Circles, size related to population</option>
   <option value="circles-zoom">Circles, size related to zoom</option>
+  <option value="rotating-bars">Rotating bars</option>
 </select>
 <textarea style="width: 100%; height: 20rem; font-family: monospace; font-size: small;" id="style-editor"></textarea>
 <small>

examples/webgl-points-layer.js

@@ -95,6 +95,35 @@ const predefinedStyles = {
       offset: [0, 0],
       opacity: 0.95
     }
+  },
+  'rotating-bars': {
+    symbol: {
+      symbolType: 'square',
+      rotation: ['*', [
+        'time'
+      ], 0.1],
+      size: ['array', 4, [
+        'interpolate',
+        ['linear'],
+        ['get', 'population'],
+        20000, 4,
+        300000, 28]
+      ],
+      color: [
+        'interpolate',
+        ['linear'],
+        ['get', 'population'],
+        20000, '#ffdc00',
+        300000, '#ff5b19'
+      ],
+      offset: ['array', 0, [
+        'interpolate',
+        ['linear'],
+        ['get', 'population'],
+        20000, 2,
+        300000, 14]
+      ]
+    }
   }
 };
 
@@ -167,3 +196,10 @@ function onSelectChange() {
 }
 onSelectChange();
 select.addEventListener('change', onSelectChange);
+
+// animate the map
+function animate() {
+  map.render();
+  window.requestAnimationFrame(animate);
+}
+animate();

examples/webpack/example-builder.js

@@ -138,9 +138,13 @@ ExampleBuilder.prototype.apply = function(compiler) {
       .filter(chunk => chunk.names[0] !== this.common);
 
     const exampleData = [];
+    const uniqueTags = new Set();
     const promises = chunks.map(async chunk => {
       const [assets, data] = await this.render(compiler.context, chunk);
 
+      // collect tags for main page... TODO: implement index tag links
+      data.tags.forEach(tag => uniqueTags.add(tag));
+
       exampleData.push({
         link: data.filename,
         example: data.filename,
@@ -158,7 +162,8 @@ ExampleBuilder.prototype.apply = function(compiler) {
 
     const info = {
       examples: exampleData,
-      index: createWordIndex(exampleData)
+      index: createWordIndex(exampleData),
+      tags: Array.from(uniqueTags)
     };
 
     const indexSource = `var info = ${JSON.stringify(info)}`;
@@ -182,6 +187,13 @@ ExampleBuilder.prototype.render = async function(dir, chunk) {
   data.olVersion = pkg.version;
   data.filename = htmlName;
 
+  // process tags
+  if (data.tags) {
+    data.tags = data.tags.replace(/[\s"]+/g, '').split(',');
+  } else {
+    data.tags = [];
+  }
+
   // add in script tag
   const jsName = `${name}.js`;
   let jsSource = getJsSource(chunk, path.join('.', jsName));

examples/wms-getlegendgraphic.html

@@ -12,4 +12,4 @@ tags: "GetLegendGraphic, getLegendUrl, WMS"
 ---
 <div id="map" class="map"></div>
 Legend:
-<div><img id="legend" src=""/></div>
+<div><img id="legend"/></div>

examples/zoom-constrained.html

@@ -4,9 +4,9 @@ title: Constrained Zoom
 shortdesc: Example of a zoom constrained view.
 docs: >
   This map has a view that is constrained between zoom levels 9 and 13.  This is done using the `minZoom` and `maxZoom` view options.
-tags: "bing, zoom, minZoom, maxZoom"
+tags: "maptiler, zoom, minZoom, maxZoom"
 cloak:
-  - key: As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5
-    value: Your Bing Maps Key from http://www.bingmapsportal.com/ here
+  - key: get_your_own_D6rA4zTHduk6KOKTXzGB
+    value: Get your own API key at https://www.maptiler.com/cloud/
 ---
 <div id="map" class="map"></div>

examples/zoom-constrained.js

@@ -1,16 +1,20 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
 import TileLayer from '../src/ol/layer/Tile.js';
-import BingMaps from '../src/ol/source/BingMaps.js';
+import XYZ from '../src/ol/source/XYZ.js';
 
 
+const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
+const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
+
 const map = new Map({
   target: 'map',
   layers: [
     new TileLayer({
-      source: new BingMaps({
-        key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
-        imagerySet: 'Aerial'
+      source: new XYZ({
+        attributions: attributions,
+        url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key
       })
     })
   ],

package.json

@@ -36,7 +36,7 @@
     "url": "https://github.com/openlayers/openlayers/issues"
   },
   "dependencies": {
-    "@openlayers/pepjs": "^0.5.3",
+    "elm-pep": "^1.0.2",
     "pbf": "3.2.1",
     "pixelworks": "1.1.0",
     "rbush": "^3.0.1"
@@ -55,7 +55,7 @@
     "chaikin-smooth": "^1.0.4",
     "clean-css-cli": "4.3.0",
     "copy-webpack-plugin": "^5.0.4",
-    "coveralls": "3.0.7",
+    "coveralls": "3.0.9",
     "eslint": "^6.0.0",
     "eslint-config-openlayers": "^13.0.0",
     "expect.js": "0.3.1",
@@ -63,7 +63,7 @@
     "fs-extra": "^8.0.0",
     "glob": "^7.1.5",
     "globby": "^10.0.0",
-    "handlebars": "4.4.5",
+    "handlebars": "4.5.3",
     "html-to-image": "^0.1.0",
     "istanbul": "0.4.5",
     "istanbul-instrumenter-loader": "^3.0.1",
@@ -79,13 +79,13 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^4.0.0-rc.2",
     "loglevelnext": "^3.0.1",
-    "marked": "0.7.0",
-    "mocha": "6.2.2",
+    "marked": "0.8.0",
+    "mocha": "7.0.0",
     "ol-mapbox-style": "^5.0.2",
     "pixelmatch": "^5.1.0",
     "pngjs": "^3.4.0",
-    "proj4": "2.5.0",
-    "puppeteer": "~1.20.0",
+    "proj4": "2.6.0",
+    "puppeteer": "~2.0.0",
     "rollup": "^1.25.1",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-commonjs": "^10.0.0",
@@ -93,16 +93,16 @@
     "rollup-plugin-terser": "^5.0.0",
     "serve-static": "^1.14.0",
     "shx": "^0.3.2",
-    "sinon": "^7.3.2",
+    "sinon": "^8.0.0",
     "terser-webpack-plugin": "^2.0.1",
     "typescript": "3.5.3",
     "url-polyfill": "^1.1.5",
     "walk": "^2.3.9",
-    "webpack": "4.41.2",
+    "webpack": "4.41.5",
     "webpack-cli": "^3.3.2",
     "webpack-dev-middleware": "^3.6.2",
     "webpack-dev-server": "^3.3.1",
-    "yargs": "^14.2.0"
+    "yargs": "^15.0.2"
   },
   "eslintConfig": {
     "extends": "openlayers",

rendering/cases/layer-vectortile-rendermode-vector/main.js

@@ -0,0 +1,31 @@
+import Map from '../../../src/ol/Map.js';
+import View from '../../../src/ol/View.js';
+import VectorTileSource from '../../../src/ol/source/VectorTile.js';
+import MVT from '../../../src/ol/format/MVT.js';
+import {createXYZ} from '../../../src/ol/tilegrid.js';
+import VectorTileLayer from '../../../src/ol/layer/VectorTile.js';
+import VectorTileRenderType from '../../../src/ol/layer/VectorTileRenderType.js';
+
+new Map({
+  layers: [
+    new VectorTileLayer({
+      renderMode: VectorTileRenderType.VECTOR,
+      source: new VectorTileSource({
+        format: new MVT(),
+        tileGrid: createXYZ(),
+        url: '/data/tiles/mapbox-streets-v6/{z}/{x}/{y}.vector.pbf',
+        transition: 0
+      })
+    })
+  ],
+  target: 'map',
+  view: new View({
+    center: [1825927.7316762917, 6143091.089223046],
+    zoom: 14
+  })
+});
+
+render({
+  message: 'Vector tile layer renders with vector render mode',
+  tolerance: 0.01
+});

src/ol/ImageTile.js

@@ -58,20 +58,6 @@ class ImageTile extends Tile {
 
   }
 
-  /**
-   * @inheritDoc
-   */
-  disposeInternal() {
-    if (this.state == TileState.LOADING) {
-      this.unlistenImage_();
-      this.image_ = getBlankImage();
-    }
-    if (this.interimTile) {
-      this.interimTile.dispose();
-    }
-    super.disposeInternal();
-  }
-
   /**
    * Get the HTML image element for this tile (may be a Canvas, Image, or Video).
    * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.

src/ol/MapBrowserEventHandler.js

@@ -2,13 +2,14 @@
  * @module ol/MapBrowserEventHandler
  */
 
-import '@openlayers/pepjs';
-import {DEVICE_PIXEL_RATIO} from './has.js';
+import 'elm-pep';
+import {DEVICE_PIXEL_RATIO, PASSIVE_EVENT_LISTENERS} from './has.js';
 import MapBrowserEventType from './MapBrowserEventType.js';
 import MapBrowserPointerEvent from './MapBrowserPointerEvent.js';
 import {listen, unlistenByKey} from './events.js';
 import EventTarget from './events/Target.js';
 import PointerEventType from './pointer/EventType.js';
+import EventType from './events/EventType.js';
 
 class MapBrowserEventHandler extends EventTarget {
 
@@ -84,6 +85,12 @@ class MapBrowserEventHandler extends EventTarget {
       PointerEventType.POINTERDOWN,
       this.handlePointerDown_, this);
 
+    /**
+     * @type {PointerEvent}
+     * @private
+     */
+    this.originalPointerMoveEvent_;
+
     /**
      * @type {?import("./events.js").EventsKey}
      * @private
@@ -92,6 +99,13 @@ class MapBrowserEventHandler extends EventTarget {
       PointerEventType.POINTERMOVE,
       this.relayEvent_, this);
 
+    /**
+     * @private
+     */
+    this.boundHandleTouchMove_ = this.handleTouchMove_.bind(this);
+
+    this.element_.addEventListener(EventType.TOUCHMOVE, this.boundHandleTouchMove_,
+      PASSIVE_EVENT_LISTENERS ? {passive: false} : false);
   }
 
   /**
@@ -246,11 +260,26 @@ class MapBrowserEventHandler extends EventTarget {
    * @private
    */
   relayEvent_(pointerEvent) {
+    this.originalPointerMoveEvent_ = pointerEvent;
     const dragging = !!(this.down_ && this.isMoving_(pointerEvent));
     this.dispatchEvent(new MapBrowserPointerEvent(
       pointerEvent.type, this.map_, pointerEvent, dragging));
   }
 
+  /**
+   * Flexible handling of a `touch-action: none` css equivalent: because calling
+   * `preventDefault()` on a `pointermove` event does not stop native page scrolling
+   * and zooming, we also listen for `touchmove` and call `preventDefault()` on it
+   * when an interaction (currently `DragPan` handles the event.
+   * @param {TouchEvent} event Event.
+   * @private
+   */
+  handleTouchMove_(event) {
+    if (this.originalPointerMoveEvent_.defaultPrevented) {
+      event.preventDefault();
+    }
+  }
+
   /**
    * @param {PointerEvent} pointerEvent Pointer
    * event.
@@ -271,6 +300,8 @@ class MapBrowserEventHandler extends EventTarget {
       unlistenByKey(this.relayedListenerKey_);
       this.relayedListenerKey_ = null;
     }
+    this.element_.removeEventListener(EventType.TOUCHMOVE, this.boundHandleTouchMove_);
+
     if (this.pointerdownListenerKey_) {
       unlistenByKey(this.pointerdownListenerKey_);
       this.pointerdownListenerKey_ = null;

src/ol/PluggableMap.js

@@ -1,7 +1,6 @@
 /**
  * @module ol/PluggableMap
  */
-import {getUid} from './util.js';
 import Collection from './Collection.js';
 import CollectionEventType from './CollectionEventType.js';
 import MapBrowserEvent from './MapBrowserEvent.js';
@@ -22,7 +21,7 @@ import {listen, unlistenByKey} from './events.js';
 import EventType from './events/EventType.js';
 import {clone, createOrUpdateEmpty, equals, getForViewAndSize, isEmpty} from './extent.js';
 import {TRUE} from './functions.js';
-import {DEVICE_PIXEL_RATIO, IMAGE_DECODE} from './has.js';
+import {DEVICE_PIXEL_RATIO, IMAGE_DECODE, PASSIVE_EVENT_LISTENERS} from './has.js';
 import LayerGroup from './layer/Group.js';
 import {hasArea} from './size.js';
 import {DROP} from './structs/PriorityQueue.js';
@@ -131,17 +130,6 @@ import {toUserCoordinate, fromUserCoordinate} from './proj.js';
  */
 
 
-/**
- * @param {HTMLElement} element Element.
- * @param {string} touchAction Value for `touch-action'.
- */
-function setTouchAction(element, touchAction) {
-  element.style.msTouchAction = touchAction;
-  element.style.touchAction = touchAction;
-  element.setAttribute('touch-action', touchAction);
-}
-
-
 /**
  * @fires import("./MapBrowserEvent.js").MapBrowserEvent
  * @fires import("./MapEvent.js").MapEvent
@@ -305,15 +293,10 @@ class PluggableMap extends BaseObject {
      */
     this.keyHandlerKeys_ = null;
 
-    /**
-     * @private
-     * @type {?Array<import("./events.js").EventsKey>}
-     */
-    this.focusHandlerKeys_ = null;
-
     const handleBrowserEvent = this.handleBrowserEvent.bind(this);
     this.viewport_.addEventListener(EventType.CONTEXTMENU, handleBrowserEvent, false);
-    this.viewport_.addEventListener(EventType.WHEEL, handleBrowserEvent, false);
+    this.viewport_.addEventListener(EventType.WHEEL, handleBrowserEvent,
+      PASSIVE_EVENT_LISTENERS ? {passive: false} : false);
 
     /**
      * @type {Collection<import("./control/Control.js").default>}
@@ -949,12 +932,14 @@ class PluggableMap extends BaseObject {
       // coordinates so interactions cannot be used.
       return;
     }
-    let target = mapBrowserEvent.originalEvent.target;
-    while (target instanceof HTMLElement) {
-      if (target.parentElement === this.overlayContainerStopEvent_) {
-        return;
+    let target = /** @type {Node} */ (mapBrowserEvent.originalEvent.target);
+    if (!mapBrowserEvent.dragging) {
+      while (target && target !== this.viewport_) {
+        if (target.parentElement === this.overlayContainerStopEvent_) {
+          return;
+        }
+        target = target.parentElement;
       }
-      target = target.parentElement;
     }
     mapBrowserEvent.frameState = this.frameState_;
     const interactionsArray = this.getInteractions().getArray();
@@ -1043,12 +1028,6 @@ class PluggableMap extends BaseObject {
       targetElement = this.getTargetElement();
     }
 
-    if (this.focusHandlerKeys_) {
-      for (let i = 0, ii = this.focusHandlerKeys_.length; i < ii; ++i) {
-        unlistenByKey(this.focusHandlerKeys_[i]);
-      }
-      this.focusHandlerKeys_ = null;
-    }
     if (this.keyHandlerKeys_) {
       for (let i = 0, ii = this.keyHandlerKeys_.length; i < ii; ++i) {
         unlistenByKey(this.keyHandlerKeys_[i]);
@@ -1077,15 +1056,6 @@ class PluggableMap extends BaseObject {
       if (!this.renderer_) {
         this.renderer_ = this.createRenderer();
       }
-      let hasFocus = true;
-      if (targetElement.hasAttribute('tabindex')) {
-        hasFocus = document.activeElement === targetElement;
-        this.focusHandlerKeys_ = [
-          listen(targetElement, EventType.FOCUS, setTouchAction.bind(this, this.viewport_, 'none')),
-          listen(targetElement, EventType.BLUR, setTouchAction.bind(this, this.viewport_, 'auto'))
-        ];
-      }
-      setTouchAction(this.viewport_, hasFocus ? 'none' : 'auto');
 
       const keyboardEventTarget = !this.keyboardEventTarget_ ?
         targetElement : this.keyboardEventTarget_;
@@ -1133,7 +1103,8 @@ class PluggableMap extends BaseObject {
     }
     const view = this.getView();
     if (view) {
-      this.viewport_.setAttribute('data-view', getUid(view));
+      this.updateViewportSize_();
+
       this.viewPropertyListenerKey_ = listen(
         view, ObjectEventType.PROPERTYCHANGE,
         this.handleViewPropertyChanged_, this);
@@ -1391,6 +1362,27 @@ class PluggableMap extends BaseObject {
             parseFloat(computedStyle['borderBottomWidth'])
       ]);
     }
+
+    this.updateViewportSize_();
+  }
+
+  /**
+   * Recomputes the viewport size and save it on the view object (if any)
+   * @private
+   */
+  updateViewportSize_() {
+    const view = this.getView();
+    if (view) {
+      let size = undefined;
+      const computedStyle = getComputedStyle(this.viewport_);
+      if (computedStyle.width && computedStyle.height) {
+        size = [
+          parseInt(computedStyle.width, 10),
+          parseInt(computedStyle.height, 10)
+        ];
+      }
+      view.setViewportSize(size);
+    }
   }
 }
 

src/ol/Tile.js

@@ -145,10 +145,9 @@ class Tile extends EventTarget {
   }
 
   /**
-   * @inheritDoc
+   * Called by the tile cache when the tile is removed from the cache due to expiry
    */
-  disposeInternal() {
-    this.setState(TileState.ABORT);
+  release() {
   }
 
   /**

src/ol/TileCache.js

@@ -6,15 +6,6 @@ import {fromKey, getKey} from './tilecoord.js';
 
 class TileCache extends LRUCache {
 
-  /**
-   * @param {number=} opt_highWaterMark High water mark.
-   */
-  constructor(opt_highWaterMark) {
-
-    super(opt_highWaterMark);
-
-  }
-
   /**
    * @param {!Object<string, import("./TileRange.js").default>} usedTiles Used tiles.
    */
@@ -24,8 +15,7 @@ class TileCache extends LRUCache {
       if (tile.getKey() in usedTiles) {
         break;
       } else {
-        // This lets the GC clean up the object
-        this.pop();
+        this.pop().release();
       }
     }
   }
@@ -43,7 +33,7 @@ class TileCache extends LRUCache {
     this.forEach(function(tile) {
       if (tile.tileCoord[0] !== z) {
         this.remove(getKey(tile.tileCoord));
-        tile.dispose();
+        tile.release();
       }
     }.bind(this));
   }

src/ol/TileQueue.js

@@ -84,8 +84,7 @@ class TileQueue extends PriorityQueue {
   handleTileChange(event) {
     const tile = /** @type {import("./Tile.js").default} */ (event.target);
     const state = tile.getState();
-    if (tile.hifi && state === TileState.LOADED || state === TileState.ERROR ||
-        state === TileState.EMPTY || state === TileState.ABORT) {
+    if (tile.hifi && state === TileState.LOADED || state === TileState.ERROR || state === TileState.EMPTY) {
       tile.removeEventListener(EventType.CHANGE, this.boundHandleTileChange_);
       const tileKey = tile.getKey();
       if (tileKey in this.tilesLoadingKeys_) {
@@ -102,27 +101,19 @@ class TileQueue extends PriorityQueue {
    */
   loadMoreTiles(maxTotalLoading, maxNewLoads) {
     let newLoads = 0;
-    let abortedTiles = false;
     let state, tile, tileKey;
     while (this.tilesLoading_ < maxTotalLoading && newLoads < maxNewLoads &&
            this.getCount() > 0) {
       tile = /** @type {import("./Tile.js").default} */ (this.dequeue()[0]);
       tileKey = tile.getKey();
       state = tile.getState();
-      if (state === TileState.ABORT) {
-        abortedTiles = true;
-      } else if (state === TileState.IDLE && !(tileKey in this.tilesLoadingKeys_)) {
+      if (state === TileState.IDLE && !(tileKey in this.tilesLoadingKeys_)) {
         this.tilesLoadingKeys_[tileKey] = true;
         ++this.tilesLoading_;
         ++newLoads;
         tile.load();
       }
     }
-    if (newLoads === 0 && abortedTiles) {
-      // Do not stop the render loop when all wanted tiles were aborted due to
-      // a small, saturated tile cache.
-      this.tileChangeCallback_();
-    }
   }
 }
 

src/ol/TileState.js

@@ -14,6 +14,5 @@ export default {
    * @type {number}
    */
   ERROR: 3,
-  EMPTY: 4,
-  ABORT: 5
+  EMPTY: 4
 };

src/ol/VectorRenderTile.js

@@ -4,7 +4,6 @@
 import {getUid} from './util.js';
 import Tile from './Tile.js';
 import {createCanvasContext2D} from './dom.js';
-import {unlistenByKey} from './events.js';
 
 
 /**
@@ -19,6 +18,10 @@ import {unlistenByKey} from './events.js';
  * @property {number} renderedTileZ
  */
 
+/**
+ * @type {Array<HTMLCanvasElement>}
+ */
+const canvasPool = [];
 
 class VectorRenderTile extends Tile {
 
@@ -26,13 +29,10 @@ class VectorRenderTile extends Tile {
    * @param {import("./tilecoord.js").TileCoord} tileCoord Tile coordinate.
    * @param {import("./TileState.js").default} state State.
    * @param {import("./tilecoord.js").TileCoord} urlTileCoord Wrapped tile coordinate for source urls.
-   * @param {import("./tilegrid/TileGrid.js").default} sourceTileGrid Tile grid of the source.
    * @param {function(VectorRenderTile):Array<import("./VectorTile").default>} getSourceTiles Function
-   * to get an source tiles for this tile.
-   * @param {function(VectorRenderTile):void} removeSourceTiles Function to remove this tile from its
-   * source tiles's consumer count.
+   * to get source tiles for this tile.
    */
-  constructor(tileCoord, state, urlTileCoord, sourceTileGrid, getSourceTiles, removeSourceTiles) {
+  constructor(tileCoord, state, urlTileCoord, getSourceTiles) {
 
     super(tileCoord, state, {transition: 0});
 
@@ -61,9 +61,9 @@ class VectorRenderTile extends Tile {
     this.errorSourceTileKeys = {};
 
     /**
-     * @type {ImageData}
+     * @type {Object<number, ImageData>}
      */
-    this.hitDetectionImageData = null;
+    this.hitDetectionImageData = {};
 
     /**
      * @private
@@ -71,6 +71,11 @@ class VectorRenderTile extends Tile {
      */
     this.replayState_ = {};
 
+    /**
+     * @type {Array<import("./VectorTile.js").default>}
+     */
+    this.sourceTiles = null;
+
     /**
      * @type {number}
      */
@@ -79,23 +84,7 @@ class VectorRenderTile extends Tile {
     /**
      * @type {!function():Array<import("./VectorTile.js").default>}
      */
-    this.getSourceTiles = getSourceTiles.bind(this, this);
-
-    /**
-     * @type {!function(import("./VectorRenderTile.js").default):void}
-     */
-    this.removeSourceTiles_ = removeSourceTiles;
-
-    /**
-     * @private
-     * @type {import("./tilegrid/TileGrid.js").default}
-     */
-    this.sourceTileGrid_ = sourceTileGrid;
-
-    /**
-     * @type {Array<import("./events.js").EventsKey>}
-     */
-    this.sourceTileListenerKeys = [];
+    this.getSourceTiles = getSourceTiles.bind(undefined, this);
 
     /**
      * z of the source tiles of the last getSourceTiles call.
@@ -115,27 +104,6 @@ class VectorRenderTile extends Tile {
     this.wrappedTileCoord = urlTileCoord;
   }
 
-  /**
-   * @inheritDoc
-   */
-  disposeInternal() {
-    this.sourceTileListenerKeys.forEach(unlistenByKey);
-    this.sourceTileListenerKeys.length = 0;
-    this.removeSourceTiles_(this);
-    for (const key in this.context_) {
-      const canvas = this.context_[key].canvas;
-      canvas.width = 0;
-      canvas.height = 0;
-    }
-    for (const key in this.executorGroups) {
-      const executorGroups = this.executorGroups[key];
-      for (let i = 0, ii = executorGroups.length; i < ii; ++i) {
-        executorGroups[i].disposeInternal();
-      }
-    }
-    super.disposeInternal();
-  }
-
   /**
    * @param {import("./layer/Layer.js").default} layer Layer.
    * @return {CanvasRenderingContext2D} The rendering context.
@@ -143,7 +111,7 @@ class VectorRenderTile extends Tile {
   getContext(layer) {
     const key = getUid(layer);
     if (!(key in this.context_)) {
-      this.context_[key] = createCanvasContext2D();
+      this.context_[key] = createCanvasContext2D(1, 1, canvasPool);
     }
     return this.context_[key];
   }
@@ -192,6 +160,16 @@ class VectorRenderTile extends Tile {
   load() {
     this.getSourceTiles();
   }
+
+  /**
+   * @inheritDoc
+   */
+  release() {
+    for (const key in this.context_) {
+      canvasPool.push(this.context_[key].canvas);
+    }
+    super.release();
+  }
 }
 
 

src/ol/VectorTile.js

@@ -18,11 +18,6 @@ class VectorTile extends Tile {
 
     super(tileCoord, state, opt_options);
 
-    /**
-     * @type {number}
-     */
-    this.consumers = 0;
-
     /**
      * Extent of this tile; set by the source.
      * @type {import("./extent.js").Extent}
@@ -105,7 +100,9 @@ class VectorTile extends Tile {
     if (this.state == TileState.IDLE) {
       this.setState(TileState.LOADING);
       this.tileLoadFunction_(this, this.url_);
-      this.loader_(this.extent, this.resolution, this.projection);
+      if (this.loader_) {
+        this.loader_(this.extent, this.resolution, this.projection);
+      }
     }
   }
 

src/ol/View.js

@@ -2,7 +2,6 @@
  * @module ol/View
  */
 import {DEFAULT_TILE_SIZE} from './tilegrid/common.js';
-import {getUid} from './util.js';
 import {VOID} from './functions.js';
 import {createExtent, none as centerNone} from './centerconstraint.js';
 import BaseObject from './Object.js';
@@ -294,6 +293,12 @@ class View extends BaseObject {
      */
     this.projection_ = createProjection(options.projection, 'EPSG:3857');
 
+    /**
+     * @private
+     * @type {import("./size.js").Size}
+     */
+    this.viewportSize_ = [100, 100];
+
     /**
      * @private
      * @type {import("./coordinate.js").Coordinate|undefined}
@@ -312,6 +317,12 @@ class View extends BaseObject {
      */
     this.targetRotation_;
 
+    /**
+     * @private
+     * @type {import("./coordinate.js").Coordinate|undefined}
+     */
+    this.cancelAnchor_ = undefined;
+
     if (options.center) {
       options.center = fromUserCoordinate(options.center, this.projection_);
     }
@@ -584,13 +595,19 @@ class View extends BaseObject {
    */
   cancelAnimations() {
     this.setHint(ViewHint.ANIMATING, -this.hints_[ViewHint.ANIMATING]);
+    let anchor;
     for (let i = 0, ii = this.animations_.length; i < ii; ++i) {
       const series = this.animations_[i];
       if (series[0].callback) {
         animationCallback(series[0].callback, false);
       }
+      anchor = anchor ||
+        series.filter(function(animation) {
+          return !animation.complete;
+        })[0].anchor;
     }
     this.animations_.length = 0;
+    this.cancelAnchor_ = anchor;
   }
 
   /**
@@ -637,7 +654,7 @@ class View extends BaseObject {
             animation.targetResolution :
             animation.sourceResolution + progress * (animation.targetResolution - animation.sourceResolution);
           if (animation.anchor) {
-            const size = this.getSizeFromViewport_(this.getRotation());
+            const size = this.getViewportSize_(this.getRotation());
             const constrainedResolution = this.constraints_.resolution(resolution, 0, size, true);
             this.targetCenter_ = this.calculateCenterZoom(constrainedResolution, animation.anchor);
           }
@@ -710,26 +727,33 @@ class View extends BaseObject {
   }
 
   /**
+   * Returns the current viewport size.
    * @private
    * @param {number=} opt_rotation Take into account the rotation of the viewport when giving the size
    * @return {import("./size.js").Size} Viewport size or `[100, 100]` when no viewport is found.
    */
-  getSizeFromViewport_(opt_rotation) {
-    const size = [100, 100];
-    const selector = '.ol-viewport[data-view="' + getUid(this) + '"]';
-    const element = document.querySelector(selector);
-    if (element) {
-      const metrics = getComputedStyle(element);
-      size[0] = parseInt(metrics.width, 10);
-      size[1] = parseInt(metrics.height, 10);
-    }
+  getViewportSize_(opt_rotation) {
+    const size = this.viewportSize_;
     if (opt_rotation) {
       const w = size[0];
       const h = size[1];
-      size[0] = Math.abs(w * Math.cos(opt_rotation)) + Math.abs(h * Math.sin(opt_rotation));
-      size[1] = Math.abs(w * Math.sin(opt_rotation)) + Math.abs(h * Math.cos(opt_rotation));
+      return [
+        Math.abs(w * Math.cos(opt_rotation)) + Math.abs(h * Math.sin(opt_rotation)),
+        Math.abs(w * Math.sin(opt_rotation)) + Math.abs(h * Math.cos(opt_rotation))
+      ];
+    } else {
+      return size;
     }
-    return size;
+  }
+
+  /**
+   * Stores the viewport size on the view. The viewport size is not read every time from the DOM
+   * to avoid performance hit and layout reflow.
+   * This should be done on map size change.
+   * @param {import("./size.js").Size=} opt_size Viewport size; if undefined, [100, 100] is assumed
+   */
+  setViewportSize(opt_size) {
+    this.viewportSize_ = Array.isArray(opt_size) ? opt_size.slice() : [100, 100];
   }
 
   /**
@@ -780,8 +804,8 @@ class View extends BaseObject {
    * The size is the pixel dimensions of the box into which the calculated extent
    * should fit. In most cases you want to get the extent of the entire map,
    * that is `map.getSize()`.
-   * @param {import("./size.js").Size=} opt_size Box pixel size. If not provided, the size of the
-   * first map that uses this view will be used.
+   * @param {import("./size.js").Size=} opt_size Box pixel size. If not provided, the size
+   * of the map that uses this view will be used.
    * @return {import("./extent.js").Extent} Extent.
    * @api
    */
@@ -796,7 +820,7 @@ class View extends BaseObject {
    * @return {import("./extent.js").Extent} Extent.
    */
   calculateExtentInternal(opt_size) {
-    const size = opt_size || this.getSizeFromViewport_();
+    const size = opt_size || this.getViewportSize_();
     const center = /** @type {!import("./coordinate.js").Coordinate} */ (this.getCenterInternal());
     assert(center, 1); // The view center is not defined
     const resolution = /** @type {!number} */ (this.getResolution());
@@ -919,7 +943,7 @@ class View extends BaseObject {
    *     the given size.
    */
   getResolutionForExtentInternal(extent, opt_size) {
-    const size = opt_size || this.getSizeFromViewport_();
+    const size = opt_size || this.getViewportSize_();
     const xResolution = getWidth(extent) / size[0];
     const yResolution = getHeight(extent) / size[1];
     return Math.max(xResolution, yResolution);
@@ -933,7 +957,7 @@ class View extends BaseObject {
    */
   getResolutionForValueFunction(opt_power) {
     const power = opt_power || 2;
-    const maxResolution = this.maxResolution_;
+    const maxResolution = this.getConstrainedResolution(this.maxResolution_);
     const minResolution = this.minResolution_;
     const max = Math.log(maxResolution / minResolution) / Math.log(power);
     return (
@@ -964,17 +988,17 @@ class View extends BaseObject {
    * @return {function(number): number} Value for resolution function.
    */
   getValueForResolutionFunction(opt_power) {
-    const power = opt_power || 2;
-    const maxResolution = this.maxResolution_;
+    const logPower = Math.log(opt_power || 2);
+    const maxResolution = this.getConstrainedResolution(this.maxResolution_);
     const minResolution = this.minResolution_;
-    const max = Math.log(maxResolution / minResolution) / Math.log(power);
+    const max = Math.log(maxResolution / minResolution) / logPower;
     return (
       /**
        * @param {number} resolution Resolution.
        * @return {number} Value.
        */
       function(resolution) {
-        const value = (Math.log(maxResolution / resolution) / Math.log(power)) / max;
+        const value = (Math.log(maxResolution / resolution) / logPower) / max;
         return value;
       });
   }
@@ -1067,7 +1091,7 @@ class View extends BaseObject {
    * @api
    */
   fit(geometryOrExtent, opt_options) {
-    const options = assign({size: this.getSizeFromViewport_()}, opt_options || {});
+    const options = assign({size: this.getViewportSize_()}, opt_options || {});
 
     /** @type {import("./geom/SimpleGeometry.js").default} */
     let geometry;
@@ -1085,7 +1109,7 @@ class View extends BaseObject {
     } else {
       const userProjection = getUserProjection();
       if (userProjection) {
-        geometry = /** @type {import("./geom/SimpleGeometry.js").default} */ (geometry.clone().transform(userProjection, this.getProjection()));
+        geometry = /** @type {import("./geom/SimpleGeometry.js").default} */ (geometryOrExtent.clone().transform(userProjection, this.getProjection()));
       } else {
         geometry = geometryOrExtent;
       }
@@ -1102,7 +1126,7 @@ class View extends BaseObject {
     const options = opt_options || {};
     let size = options.size;
     if (!size) {
-      size = this.getSizeFromViewport_();
+      size = this.getViewportSize_();
     }
     const padding = options.padding !== undefined ? options.padding : [0, 0, 0, 0];
     const nearest = options.nearest !== undefined ? options.nearest : false;
@@ -1249,10 +1273,10 @@ class View extends BaseObject {
    */
   adjustResolutionInternal(ratio, opt_anchor) {
     const isMoving = this.getAnimating() || this.getInteracting();
-    const size = this.getSizeFromViewport_(this.getRotation());
+    const size = this.getViewportSize_(this.getRotation());
     const newResolution = this.constraints_.resolution(this.targetResolution_ * ratio, 0, size, isMoving);
 
-    if (opt_anchor !== undefined) {
+    if (opt_anchor) {
       this.targetCenter_ = this.calculateCenterZoom(newResolution, opt_anchor);
     }
 
@@ -1292,7 +1316,7 @@ class View extends BaseObject {
   adjustRotationInternal(delta, opt_anchor) {
     const isMoving = this.getAnimating() || this.getInteracting();
     const newRotation = this.constraints_.rotation(this.targetRotation_ + delta, isMoving);
-    if (opt_anchor !== undefined) {
+    if (opt_anchor) {
       this.targetCenter_ = this.calculateCenterRotate(newRotation, opt_anchor);
     }
     this.targetRotation_ += delta;
@@ -1373,7 +1397,7 @@ class View extends BaseObject {
 
     // compute rotation
     const newRotation = this.constraints_.rotation(this.targetRotation_, isMoving);
-    const size = this.getSizeFromViewport_(newRotation);
+    const size = this.getViewportSize_(newRotation);
     const newResolution = this.constraints_.resolution(this.targetResolution_, 0, size, isMoving);
     const newCenter = this.constraints_.center(this.targetCenter_, newResolution, size, isMoving);
 
@@ -1390,6 +1414,7 @@ class View extends BaseObject {
     if (this.getAnimating() && !opt_doNotCancelAnims) {
       this.cancelAnimations();
     }
+    this.cancelAnchor_ = undefined;
   }
 
   /**
@@ -1406,11 +1431,11 @@ class View extends BaseObject {
     const direction = opt_resolutionDirection || 0;
 
     const newRotation = this.constraints_.rotation(this.targetRotation_);
-    const size = this.getSizeFromViewport_(newRotation);
+    const size = this.getViewportSize_(newRotation);
     const newResolution = this.constraints_.resolution(this.targetResolution_, direction, size);
     const newCenter = this.constraints_.center(this.targetCenter_, newResolution, size);
 
-    if (duration === 0) {
+    if (duration === 0 && !this.cancelAnchor_) {
       this.targetResolution_ = newResolution;
       this.targetRotation_ = newRotation;
       this.targetCenter_ = newCenter;
@@ -1418,6 +1443,9 @@ class View extends BaseObject {
       return;
     }
 
+    const anchor = opt_anchor || (duration === 0 ? this.cancelAnchor_ : undefined);
+    this.cancelAnchor_ = undefined;
+
     if (this.getResolution() !== newResolution ||
       this.getRotation() !== newRotation ||
       !this.getCenterInternal() ||
@@ -1433,7 +1461,7 @@ class View extends BaseObject {
         resolution: newResolution,
         duration: duration,
         easing: easeOut,
-        anchor: opt_anchor
+        anchor: anchor
       });
     }
   }
@@ -1484,7 +1512,7 @@ class View extends BaseObject {
    * @return {import("./coordinate.js").Coordinate|undefined} Valid center position.
    */
   getConstrainedCenter(targetCenter, opt_targetResolution) {
-    const size = this.getSizeFromViewport_(this.getRotation());
+    const size = this.getViewportSize_(this.getRotation());
     return this.constraints_.center(targetCenter, opt_targetResolution || this.getResolution(), size);
   }
 
@@ -1513,7 +1541,7 @@ class View extends BaseObject {
    */
   getConstrainedResolution(targetResolution, opt_direction) {
     const direction = opt_direction || 0;
-    const size = this.getSizeFromViewport_(this.getRotation());
+    const size = this.getViewportSize_(this.getRotation());
 
     return this.constraints_.resolution(targetResolution, direction, size);
   }

src/ol/control/MousePosition.js

@@ -1,12 +1,13 @@
 /**
  * @module ol/control/MousePosition
  */
+
+import 'elm-pep';
 import {listen} from '../events.js';
 import EventType from '../pointer/EventType.js';
 import {getChangeEventType} from '../Object.js';
 import Control from './Control.js';
 import {getTransformFromProjections, identityTransform, get as getProjection, getUserProjection} from '../proj.js';
-import '@openlayers/pepjs';
 
 
 /**

src/ol/control/OverviewMap.js

@@ -304,6 +304,8 @@ class OverviewMap extends Control {
    */
   bindView_(view) {
     view.addEventListener(getChangeEventType(ViewProperty.ROTATION), this.boundHandleRotationChanged_);
+    // Sync once with the new view
+    this.handleRotationChanged_();
   }
 
   /**

src/ol/control/ZoomSlider.js

@@ -1,6 +1,8 @@
 /**
  * @module ol/control/ZoomSlider
  */
+
+import 'elm-pep';
 import Control from './Control.js';
 import {CLASS_CONTROL, CLASS_UNSELECTABLE} from '../css.js';
 import {easeOut} from '../easing.js';
@@ -9,7 +11,6 @@ import {stopPropagation} from '../events/Event.js';
 import EventType from '../events/EventType.js';
 import {clamp} from '../math.js';
 import PointerEventType from '../pointer/EventType.js';
-import '@openlayers/pepjs';
 
 
 /**
@@ -135,7 +136,6 @@ class ZoomSlider extends Control {
     thumbElement.setAttribute('type', 'button');
     thumbElement.className = className + '-thumb ' + CLASS_UNSELECTABLE;
     const containerElement = this.element;
-    containerElement.setAttribute('touch-action', 'none');
     containerElement.className = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;
     containerElement.appendChild(thumbElement);
 

src/ol/dom.js

@@ -7,10 +7,12 @@
  * Create an html canvas element and returns its 2d context.
  * @param {number=} opt_width Canvas width.
  * @param {number=} opt_height Canvas height.
+ * @param {Array<HTMLCanvasElement>=} opt_canvasPool Canvas pool to take existing canvas from.
  * @return {CanvasRenderingContext2D} The context.
  */
-export function createCanvasContext2D(opt_width, opt_height) {
-  const canvas = document.createElement('canvas');
+export function createCanvasContext2D(opt_width, opt_height, opt_canvasPool) {
+  const canvas = opt_canvasPool && opt_canvasPool.length ?
+    opt_canvasPool.shift() : document.createElement('canvas');
   if (opt_width) {
     canvas.width = opt_width;
   }

src/ol/events/EventType.js

@@ -34,5 +34,6 @@ export default {
   KEYPRESS: 'keypress',
   LOAD: 'load',
   RESIZE: 'resize',
+  TOUCHMOVE: 'touchmove',
   WHEEL: 'wheel'
 };

src/ol/events/condition.js

@@ -207,12 +207,9 @@ export const shiftKeyOnly = function(mapBrowserEvent) {
  * @api
  */
 export const targetNotEditable = function(mapBrowserEvent) {
-  const target = mapBrowserEvent.target;
-  const tagName = /** @type {Element} */ (target).tagName;
-  return (
-    tagName !== 'INPUT' &&
-      tagName !== 'SELECT' &&
-      tagName !== 'TEXTAREA');
+  const originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);
+  const tagName = /** @type {Element} */ (originalEvent.target).tagName;
+  return tagName !== 'INPUT' && tagName !== 'SELECT' && tagName !== 'TEXTAREA';
 };
 
 

src/ol/format/KML.js

@@ -386,6 +386,8 @@ function createStyleDefaults() {
  * @property {Array<Style>} [defaultStyle] Default style. The
  * default default style is the same as Google Earth.
  * @property {boolean} [writeStyles=true] Write styles into KML.
+ * @property {null|string} [crossOrigin='anonymous'] The `crossOrigin` attribute for loaded images. Note that you must provide a
+ * `crossOrigin` value if you want to access pixel data with the Canvas renderer.
  */
 
 
@@ -458,6 +460,13 @@ class KML extends XMLFeature {
     this.showPointNames_ = options.showPointNames !== undefined ?
       options.showPointNames : true;
 
+    /**
+     * @private
+     * @type {null|string}
+     */
+    this.crossOrigin_ = options.crossOrigin !== undefined ?
+      options.crossOrigin : 'anonymous';
+
   }
 
   /**
@@ -494,7 +503,7 @@ class KML extends XMLFeature {
    */
   readPlacemark_(node, objectStack) {
     const object = pushParseAndPop({'geometry': null},
-      PLACEMARK_PARSERS, node, objectStack);
+      PLACEMARK_PARSERS, node, objectStack, this);
     if (!object) {
       return undefined;
     }
@@ -537,7 +546,7 @@ class KML extends XMLFeature {
   readSharedStyle_(node, objectStack) {
     const id = node.getAttribute('id');
     if (id !== null) {
-      const style = readStyle(node, objectStack);
+      const style = readStyle.call(this, node, objectStack);
       if (style) {
         let styleUri;
         let baseURI = node.baseURI;
@@ -565,7 +574,7 @@ class KML extends XMLFeature {
     if (id === null) {
       return;
     }
-    const styleMapValue = readStyleMapValue(node, objectStack);
+    const styleMapValue = readStyleMapValue.call(this, node, objectStack);
     if (!styleMapValue) {
       return;
     }
@@ -1112,13 +1121,14 @@ const STYLE_MAP_PARSERS = makeStructureNS(
 
 
 /**
+ * @this {KML}
  * @param {Element} node Node.
  * @param {Array<*>} objectStack Object stack.
  * @return {Array<Style>|string|undefined} StyleMap.
  */
 function readStyleMapValue(node, objectStack) {
   return pushParseAndPop(undefined,
-    STYLE_MAP_PARSERS, node, objectStack);
+    STYLE_MAP_PARSERS, node, objectStack, this);
 }
 
 
@@ -1137,6 +1147,7 @@ const ICON_STYLE_PARSERS = makeStructureNS(
 
 
 /**
+ * @this {KML}
  * @param {Element} node Node.
  * @param {Array<*>} objectStack Object stack.
  */
@@ -1223,7 +1234,7 @@ function iconStyleParser(node, objectStack) {
       anchorOrigin: anchorOrigin,
       anchorXUnits: anchorXUnits,
       anchorYUnits: anchorYUnits,
-      crossOrigin: 'anonymous', // FIXME should this be configurable?
+      crossOrigin: this.crossOrigin_,
       offset: offset,
       offsetOrigin: IconOrigin.BOTTOM_LEFT,
       rotation: rotation,
@@ -1719,13 +1730,14 @@ const STYLE_PARSERS = makeStructureNS(
 
 
 /**
+ * @this {KML}
  * @param {Element} node Node.
  * @param {Array<*>} objectStack Object stack.
  * @return {Array<Style>} Style.
  */
 function readStyle(node, objectStack) {
   const styleObject = pushParseAndPop(
-    {}, STYLE_PARSERS, node, objectStack);
+    {}, STYLE_PARSERS, node, objectStack, this);
   if (!styleObject) {
     return null;
   }
@@ -1885,7 +1897,7 @@ const PAIR_PARSERS = makeStructureNS(
  */
 function pairDataParser(node, objectStack) {
   const pairObject = pushParseAndPop(
-    {}, PAIR_PARSERS, node, objectStack);
+    {}, PAIR_PARSERS, node, objectStack, this);
   if (!pairObject) {
     return;
   }
@@ -1907,11 +1919,12 @@ function pairDataParser(node, objectStack) {
 
 
 /**
+ * @this {KML}
  * @param {Element} node Node.
  * @param {Array<*>} objectStack Object stack.
  */
 function placemarkStyleMapParser(node, objectStack) {
-  const styleMapValue = readStyleMapValue(node, objectStack);
+  const styleMapValue = readStyleMapValue.call(this, node, objectStack);
   if (!styleMapValue) {
     return;
   }

src/ol/format/XMLFeature.js

@@ -5,7 +5,7 @@ import {abstract} from '../util.js';
 import {extend} from '../array.js';
 import FeatureFormat from '../format/Feature.js';
 import FormatType from '../format/FormatType.js';
-import {isDocument, parse} from '../xml.js';
+import {isDocument, parse, getXMLSerializer} from '../xml.js';
 
 /**
  * @classdesc
@@ -23,7 +23,7 @@ class XMLFeature extends FeatureFormat {
      * @type {XMLSerializer}
      * @private
      */
-    this.xmlSerializer_ = new XMLSerializer();
+    this.xmlSerializer_ = getXMLSerializer();
   }
 
   /**

src/ol/format/xsd.js

@@ -1,7 +1,7 @@
 /**
  * @module ol/format/xsd
  */
-import {getAllTextContent, DOCUMENT} from '../xml.js';
+import {getAllTextContent, getDocument} from '../xml.js';
 import {padNumber} from '../string.js';
 
 
@@ -112,7 +112,7 @@ export function writeBooleanTextNode(node, bool) {
  * @param {string} string String.
  */
 export function writeCDATASection(node, string) {
-  node.appendChild(DOCUMENT.createCDATASection(string));
+  node.appendChild(getDocument().createCDATASection(string));
 }
 
 
@@ -128,7 +128,7 @@ export function writeDateTimeTextNode(node, dateTime) {
       padNumber(date.getUTCHours(), 2) + ':' +
       padNumber(date.getUTCMinutes(), 2) + ':' +
       padNumber(date.getUTCSeconds(), 2) + 'Z';
-  node.appendChild(DOCUMENT.createTextNode(string));
+  node.appendChild(getDocument().createTextNode(string));
 }
 
 
@@ -138,7 +138,7 @@ export function writeDateTimeTextNode(node, dateTime) {
  */
 export function writeDecimalTextNode(node, decimal) {
   const string = decimal.toPrecision();
-  node.appendChild(DOCUMENT.createTextNode(string));
+  node.appendChild(getDocument().createTextNode(string));
 }
 
 
@@ -148,7 +148,7 @@ export function writeDecimalTextNode(node, decimal) {
  */
 export function writeNonNegativeIntegerTextNode(node, nonNegativeInteger) {
   const string = nonNegativeInteger.toString();
-  node.appendChild(DOCUMENT.createTextNode(string));
+  node.appendChild(getDocument().createTextNode(string));
 }
 
 
@@ -157,5 +157,5 @@ export function writeNonNegativeIntegerTextNode(node, nonNegativeInteger) {
  * @param {string} string String.
  */
 export function writeStringTextNode(node, string) {
-  node.appendChild(DOCUMENT.createTextNode(string));
+  node.appendChild(getDocument().createTextNode(string));
 }

src/ol/has.js

@@ -44,3 +44,23 @@ export const DEVICE_PIXEL_RATIO = window.devicePixelRatio || 1;
  * @type {boolean}
  */
 export const IMAGE_DECODE = typeof Image !== 'undefined' && Image.prototype.decode;
+
+/**
+ * @type {boolean}
+ */
+export const PASSIVE_EVENT_LISTENERS = (function() {
+  let passive = false;
+  try {
+    const options = Object.defineProperty({}, 'passive', {
+      get: function() {
+        passive = true;
+      }
+    });
+
+    window.addEventListener('_', null, options);
+    window.removeEventListener('_', null, options);
+  } catch (error) {
+    // passive not supported
+  }
+  return passive;
+})();

src/ol/interaction/DragBox.js

@@ -3,7 +3,7 @@
  */
 // FIXME draw drag box
 import Event from '../events/Event.js';
-import {always, mouseOnly, mouseActionButton} from '../events/condition.js';
+import {mouseActionButton} from '../events/condition.js';
 import {VOID} from '../functions.js';
 import PointerInteraction from './Pointer.js';
 import RenderBox from '../render/Box.js';
@@ -22,7 +22,7 @@ import RenderBox from '../render/Box.js';
  * @property {string} [className='ol-dragbox'] CSS class name for styling the box.
  * @property {import("../events/condition.js").Condition} [condition] A function that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean
  * to indicate whether that event should be handled.
- * Default is {@link ol/events/condition~always}.
+ * Default is {@link ol/events/condition~mouseActionButton}.
  * @property {number} [minArea=64] The minimum area of the box in pixel, this value is used by the default
  * `boxEndCondition` function.
  * @property {EndCondition} [boxEndCondition] A function that takes a {@link module:ol/MapBrowserEvent~MapBrowserEvent} and two
@@ -104,8 +104,6 @@ class DragBoxEvent extends Event {
  * (see {@link module:ol/interaction/DragZoom~DragZoom} and
  * {@link module:ol/interaction/DragRotateAndZoom}).
  *
- * This interaction is only supported for mouse devices.
- *
  * @fires DragBoxEvent
  * @api
  */
@@ -148,7 +146,7 @@ class DragBox extends PointerInteraction {
      * @private
      * @type {import("../events/condition.js").Condition}
      */
-    this.condition_ = options.condition ? options.condition : always;
+    this.condition_ = options.condition ? options.condition : mouseActionButton;
 
     /**
      * @private
@@ -186,10 +184,6 @@ class DragBox extends PointerInteraction {
    * @inheritDoc
    */
   handleDragEvent(mapBrowserEvent) {
-    if (!mouseOnly(mapBrowserEvent)) {
-      return;
-    }
-
     this.box_.setPixels(this.startPixel_, mapBrowserEvent.pixel);
 
     this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXDRAG,
@@ -200,10 +194,6 @@ class DragBox extends PointerInteraction {
    * @inheritDoc
    */
   handleUpEvent(mapBrowserEvent) {
-    if (!mouseOnly(mapBrowserEvent)) {
-      return true;
-    }
-
     this.box_.setMap(null);
 
     if (this.boxEndCondition_(mapBrowserEvent, this.startPixel_, mapBrowserEvent.pixel)) {
@@ -218,12 +208,7 @@ class DragBox extends PointerInteraction {
    * @inheritDoc
    */
   handleDownEvent(mapBrowserEvent) {
-    if (!mouseOnly(mapBrowserEvent)) {
-      return false;
-    }
-
-    if (mouseActionButton(mapBrowserEvent) &&
-        this.condition_(mapBrowserEvent)) {
+    if (this.condition_(mapBrowserEvent)) {
       this.startPixel_ = mapBrowserEvent.pixel;
       this.box_.setMap(mapBrowserEvent.map);
       this.box_.setPixels(this.startPixel_, this.startPixel_);

src/ol/interaction/DragPan.js

@@ -3,7 +3,7 @@
  */
 import {scale as scaleCoordinate, rotate as rotateCoordinate} from '../coordinate.js';
 import {easeOut} from '../easing.js';
-import {noModifierKeys, primaryAction} from '../events/condition.js';
+import {noModifierKeys, primaryAction, focus} from '../events/condition.js';
 import {FALSE} from '../functions.js';
 import PointerInteraction, {centroid as centroidFromPointers} from './Pointer.js';
 
@@ -69,6 +69,20 @@ class DragPan extends PointerInteraction {
 
   }
 
+  /**
+   * @private
+   * @param {import("../MapBrowserEvent").default} mapBrowserEvent Event.
+   * @return {boolean} Condition passes.
+   */
+  conditionInternal_(mapBrowserEvent) {
+    let pass = true;
+    if (mapBrowserEvent.map.getTargetElement().hasAttribute('tabindex')) {
+      pass = focus(mapBrowserEvent);
+    }
+    return pass && this.condition_(mapBrowserEvent);
+  }
+
+
   /**
    * @inheritDoc
    */
@@ -101,6 +115,7 @@ class DragPan extends PointerInteraction {
     }
     this.lastCentroid = centroid;
     this.lastPointersCount_ = targetPointers.length;
+    mapBrowserEvent.originalEvent.preventDefault();
   }
 
   /**
@@ -145,7 +160,7 @@ class DragPan extends PointerInteraction {
    * @inheritDoc
    */
   handleDownEvent(mapBrowserEvent) {
-    if (this.targetPointers.length > 0 && this.condition_(mapBrowserEvent)) {
+    if (this.targetPointers.length > 0 && this.conditionInternal_(mapBrowserEvent)) {
       const map = mapBrowserEvent.map;
       const view = map.getView();
       this.lastCentroid = null;

src/ol/interaction/Draw.js

@@ -24,6 +24,7 @@ import InteractionProperty from './Property.js';
 import VectorLayer from '../layer/Vector.js';
 import VectorSource from '../source/Vector.js';
 import {createEditingStyle} from '../style/Style.js';
+import {fromUserCoordinate, getUserProjection} from '../proj.js';
 
 
 /**
@@ -104,11 +105,12 @@ import {createEditingStyle} from '../style/Style.js';
 
 
 /**
- * Function that takes an array of coordinates and an optional existing geometry as
- * arguments, and returns a geometry. The optional existing geometry is the
- * geometry that is returned when the function is called without a second
- * argument.
- * @typedef {function(!SketchCoordType, import("../geom/SimpleGeometry.js").default=):
+ * Function that takes an array of coordinates and an optional existing geometry
+ * and a projection as arguments, and returns a geometry. The optional existing
+ * geometry is the geometry that is returned when the function is called without
+ * a second argument.
+ * @typedef {function(!SketchCoordType, import("../geom/SimpleGeometry.js").default=,
+ *     import("../proj/Projection.js").default):
  *     import("../geom/SimpleGeometry.js").default} GeometryFunction
  */
 
@@ -296,14 +298,20 @@ class Draw extends PointerInteraction {
         /**
          * @param {!LineCoordType} coordinates The coordinates.
          * @param {import("../geom/SimpleGeometry.js").default=} opt_geometry Optional geometry.
+         * @param {import("../proj/Projection.js").default} projection The view projection.
          * @return {import("../geom/SimpleGeometry.js").default} A geometry.
          */
-        geometryFunction = function(coordinates, opt_geometry) {
+        geometryFunction = function(coordinates, opt_geometry, projection) {
           const circle = opt_geometry ? /** @type {Circle} */ (opt_geometry) :
             new Circle([NaN, NaN]);
+          const center = fromUserCoordinate(coordinates[0], projection);
           const squaredLength = squaredCoordinateDistance(
-            coordinates[0], coordinates[1]);
-          circle.setCenterAndRadius(coordinates[0], Math.sqrt(squaredLength));
+            center, fromUserCoordinate(coordinates[1], projection));
+          circle.setCenterAndRadius(center, Math.sqrt(squaredLength));
+          const userProjection = getUserProjection();
+          if (userProjection) {
+            circle.transform(projection, userProjection);
+          }
           return circle;
         };
       } else {
@@ -319,9 +327,10 @@ class Draw extends PointerInteraction {
         /**
          * @param {!LineCoordType} coordinates The coordinates.
          * @param {import("../geom/SimpleGeometry.js").default=} opt_geometry Optional geometry.
+         * @param {import("../proj/Projection.js").default} projection The view projection.
          * @return {import("../geom/SimpleGeometry.js").default} A geometry.
          */
-        geometryFunction = function(coordinates, opt_geometry) {
+        geometryFunction = function(coordinates, opt_geometry, projection) {
           let geometry = opt_geometry;
           if (geometry) {
             if (mode === Mode.POLYGON) {
@@ -675,6 +684,7 @@ class Draw extends PointerInteraction {
    */
   startDrawing_(event) {
     const start = event.coordinate;
+    const projection = event.map.getView().getProjection();
     this.finishCoordinate_ = start;
     if (this.mode_ === Mode.POINT) {
       this.sketchCoords_ = start.slice();
@@ -688,7 +698,7 @@ class Draw extends PointerInteraction {
       this.sketchLine_ = new Feature(
         new LineString(this.sketchLineCoords_));
     }
-    const geometry = this.geometryFunction_(this.sketchCoords_);
+    const geometry = this.geometryFunction_(this.sketchCoords_, undefined, projection);
     this.sketchFeature_ = new Feature();
     if (this.geometryName_) {
       this.sketchFeature_.setGeometryName(this.geometryName_);
@@ -706,6 +716,7 @@ class Draw extends PointerInteraction {
   modifyDrawing_(event) {
     let coordinate = event.coordinate;
     const geometry = this.sketchFeature_.getGeometry();
+    const projection = event.map.getView().getProjection();
     let coordinates, last;
     if (this.mode_ === Mode.POINT) {
       last = this.sketchCoords_;
@@ -722,7 +733,7 @@ class Draw extends PointerInteraction {
     }
     last[0] = coordinate[0];
     last[1] = coordinate[1];
-    this.geometryFunction_(/** @type {!LineCoordType} */ (this.sketchCoords_), geometry);
+    this.geometryFunction_(/** @type {!LineCoordType} */ (this.sketchCoords_), geometry, projection);
     if (this.sketchPoint_) {
       const sketchPointGeom = this.sketchPoint_.getGeometry();
       sketchPointGeom.setCoordinates(coordinate);
@@ -759,6 +770,7 @@ class Draw extends PointerInteraction {
   addToDrawing_(event) {
     const coordinate = event.coordinate;
     const geometry = this.sketchFeature_.getGeometry();
+    const projection = event.map.getView().getProjection();
     let done;
     let coordinates;
     if (this.mode_ === Mode.LINE_STRING) {
@@ -772,7 +784,7 @@ class Draw extends PointerInteraction {
         }
       }
       coordinates.push(coordinate.slice());
-      this.geometryFunction_(coordinates, geometry);
+      this.geometryFunction_(coordinates, geometry, projection);
     } else if (this.mode_ === Mode.POLYGON) {
       coordinates = /** @type {PolyCoordType} */ (this.sketchCoords_)[0];
       if (coordinates.length >= this.maxPoints_) {
@@ -786,7 +798,7 @@ class Draw extends PointerInteraction {
       if (done) {
         this.finishCoordinate_ = coordinates[0];
       }
-      this.geometryFunction_(this.sketchCoords_, geometry);
+      this.geometryFunction_(this.sketchCoords_, geometry, projection);
     }
     this.updateSketchFeatures_();
     if (done) {
@@ -803,13 +815,14 @@ class Draw extends PointerInteraction {
       return;
     }
     const geometry = this.sketchFeature_.getGeometry();
+    const projection = this.getMap().getView().getProjection();
     let coordinates;
     /** @type {LineString} */
     let sketchLineGeom;
     if (this.mode_ === Mode.LINE_STRING) {
       coordinates = /** @type {LineCoordType} */ (this.sketchCoords_);
       coordinates.splice(-2, 1);
-      this.geometryFunction_(coordinates, geometry);
+      this.geometryFunction_(coordinates, geometry, projection);
       if (coordinates.length >= 2) {
         this.finishCoordinate_ = coordinates[coordinates.length - 2].slice();
       }
@@ -818,7 +831,7 @@ class Draw extends PointerInteraction {
       coordinates.splice(-2, 1);
       sketchLineGeom = this.sketchLine_.getGeometry();
       sketchLineGeom.setCoordinates(coordinates);
-      this.geometryFunction_(this.sketchCoords_, geometry);
+      this.geometryFunction_(this.sketchCoords_, geometry, projection);
     }
 
     if (coordinates.length === 0) {
@@ -841,14 +854,15 @@ class Draw extends PointerInteraction {
     }
     let coordinates = this.sketchCoords_;
     const geometry = sketchFeature.getGeometry();
+    const projection = this.getMap().getView().getProjection();
     if (this.mode_ === Mode.LINE_STRING) {
       // remove the redundant last point
       coordinates.pop();
-      this.geometryFunction_(coordinates, geometry);
+      this.geometryFunction_(coordinates, geometry, projection);
     } else if (this.mode_ === Mode.POLYGON) {
       // remove the redundant last point in ring
       /** @type {PolyCoordType} */ (coordinates)[0].pop();
-      this.geometryFunction_(coordinates, geometry);
+      this.geometryFunction_(coordinates, geometry, projection);
       coordinates = geometry.getCoordinates();
     }
 
@@ -881,12 +895,10 @@ class Draw extends PointerInteraction {
   abortDrawing_() {
     this.finishCoordinate_ = null;
     const sketchFeature = this.sketchFeature_;
-    if (sketchFeature) {
-      this.sketchFeature_ = null;
-      this.sketchPoint_ = null;
-      this.sketchLine_ = null;
-      this.overlay_.getSource().clear(true);
-    }
+    this.sketchFeature_ = null;
+    this.sketchPoint_ = null;
+    this.sketchLine_ = null;
+    this.overlay_.getSource().clear(true);
     return sketchFeature;
   }
 
@@ -968,9 +980,9 @@ function getDefaultStyleFunction() {
  * @api
  */
 export function createRegularPolygon(opt_sides, opt_angle) {
-  return function(coordinates, opt_geometry) {
-    const center = /** @type {LineCoordType} */ (coordinates)[0];
-    const end = /** @type {LineCoordType} */ (coordinates)[1];
+  return function(coordinates, opt_geometry, projection) {
+    const center = fromUserCoordinate(/** @type {LineCoordType} */ (coordinates)[0], projection);
+    const end = fromUserCoordinate(/** @type {LineCoordType} */ (coordinates)[1], projection);
     const radius = Math.sqrt(
       squaredCoordinateDistance(center, end));
     const geometry = opt_geometry ? /** @type {Polygon} */ (opt_geometry) :
@@ -982,6 +994,10 @@ export function createRegularPolygon(opt_sides, opt_angle) {
       angle = Math.atan(y / x) - (x < 0 ? Math.PI : 0);
     }
     makeRegular(geometry, center, radius, angle);
+    const userProjection = getUserProjection();
+    if (userProjection) {
+      geometry.transform(projection, userProjection);
+    }
     return geometry;
   };
 }
@@ -996,8 +1012,10 @@ export function createRegularPolygon(opt_sides, opt_angle) {
  */
 export function createBox() {
   return (
-    function(coordinates, opt_geometry) {
-      const extent = boundingExtent(/** @type {LineCoordType} */ (coordinates));
+    function(coordinates, opt_geometry, projection) {
+      const extent = boundingExtent(/** @type {LineCoordType} */ (coordinates).map(function(coordinate) {
+        return fromUserCoordinate(coordinate, projection);
+      }));
       const boxCoordinates = [[
         getBottomLeft(extent),
         getBottomRight(extent),
@@ -1011,6 +1029,10 @@ export function createBox() {
       } else {
         geometry = new Polygon(boxCoordinates);
       }
+      const userProjection = getUserProjection();
+      if (userProjection) {
+        geometry.transform(projection, userProjection);
+      }
       return geometry;
     }
   );

src/ol/interaction/Modify.js

@@ -807,8 +807,8 @@ class Modify extends PointerInteraction {
     if (!this.condition_(evt)) {
       return false;
     }
-    this.handlePointerAtPixel_(evt.pixel, evt.map);
     const pixelCoordinate = evt.coordinate;
+    this.handlePointerAtPixel_(evt.pixel, evt.map, pixelCoordinate);
     this.dragSegments_.length = 0;
     this.modified_ = false;
     const vertexFeature = this.vertexFeature_;
@@ -916,16 +916,17 @@ class Modify extends PointerInteraction {
    */
   handlePointerMove_(evt) {
     this.lastPixel_ = evt.pixel;
-    this.handlePointerAtPixel_(evt.pixel, evt.map);
+    this.handlePointerAtPixel_(evt.pixel, evt.map, evt.coordinate);
   }
 
   /**
    * @param {import("../pixel.js").Pixel} pixel Pixel
    * @param {import("../PluggableMap.js").default} map Map.
+   * @param {import("../coordinate.js").Coordinate=} opt_coordinate The pixel Coordinate.
    * @private
    */
-  handlePointerAtPixel_(pixel, map) {
-    const pixelCoordinate = map.getCoordinateFromPixel(pixel);
+  handlePointerAtPixel_(pixel, map, opt_coordinate) {
+    const pixelCoordinate = opt_coordinate || map.getCoordinateFromPixel(pixel);
     const projection = map.getView().getProjection();
     const sortByDistance = function(a, b) {
       return projectedDistanceToSegmentDataSquared(pixelCoordinate, a, projection) -

src/ol/interaction/MouseWheelZoom.js

@@ -1,7 +1,7 @@
 /**
  * @module ol/interaction/MouseWheelZoom
  */
-import {always} from '../events/condition.js';
+import {always, focus} from '../events/condition.js';
 import EventType from '../events/EventType.js';
 import {DEVICE_PIXEL_RATIO, FIREFOX} from '../has.js';
 import Interaction, {zoomByDelta} from './Interaction.js';
@@ -134,13 +134,27 @@ class MouseWheelZoom extends Interaction {
 
   }
 
+  /**
+   * @private
+   * @param {import("../MapBrowserEvent").default} mapBrowserEvent Event.
+   * @return {boolean} Condition passes.
+   */
+  conditionInternal_(mapBrowserEvent) {
+    let pass = true;
+    if (mapBrowserEvent.map.getTargetElement().hasAttribute('tabindex')) {
+      pass = focus(mapBrowserEvent);
+    }
+    return pass && this.condition_(mapBrowserEvent);
+  }
+
+
   /**
    * @private
    */
   endInteraction_() {
     this.trackpadTimeoutId_ = undefined;
     const view = this.getMap().getView();
-    view.endInteraction(undefined, Math.sign(this.lastDelta_), this.lastAnchor_);
+    view.endInteraction(undefined, this.lastDelta_ ? (this.lastDelta_ > 0 ? 1 : -1) : 0, this.lastAnchor_);
   }
 
   /**
@@ -149,7 +163,7 @@ class MouseWheelZoom extends Interaction {
    * @override
    */
   handleEvent(mapBrowserEvent) {
-    if (!this.condition_(mapBrowserEvent)) {
+    if (!this.conditionInternal_(mapBrowserEvent)) {
       return true;
     }
     const type = mapBrowserEvent.type;

src/ol/interaction/Pointer.js

@@ -95,6 +95,16 @@ class PointerInteraction extends Interaction {
 
   }
 
+  /**
+   * Returns the current number of pointers involved in the interaction,
+   * e.g. `2` when two fingers are used.
+   * @return {number} The number of pointers.
+   * @api
+   */
+  getPointerCount() {
+    return this.targetPointers.length;
+  }
+
   /**
    * Handle pointer down events.
    * @param {import("../MapBrowserPointerEvent.js").default} mapBrowserEvent Event.
@@ -136,9 +146,6 @@ class PointerInteraction extends Interaction {
     } else {
       if (mapBrowserEvent.type == MapBrowserEventType.POINTERDOWN) {
         const handled = this.handleDownEvent(mapBrowserEvent);
-        if (handled) {
-          mapBrowserEvent.preventDefault();
-        }
         this.handlingDownUpSequence = handled;
         stopEvent = this.stopDown(handled);
       } else if (mapBrowserEvent.type == MapBrowserEventType.POINTERMOVE) {

src/ol/layer/Heatmap.js

@@ -294,7 +294,9 @@ class Heatmap extends VectorLayer {
               gl_FragColor.rgb *= gl_FragColor.a;
             }`,
           uniforms: {
-            u_gradientTexture: this.gradient_
+            u_gradientTexture: function() {
+              return this.gradient_;
+            }.bind(this)
           }
         }
       ]

src/ol/layer/VectorTile.js

@@ -40,7 +40,9 @@ import {assign} from '../obj.js';
  *  * `'hybrid'`: Polygon and line elements are rendered as images, so pixels are scaled during zoom
  *    animations. Point symbols and texts are accurately rendered as vectors and can stay upright on
  *    rotated views.
- *
+ *  * `'vector'`: Everything is rendered as vectors. Use this mode for improved performance on vector
+ *    tile layers with only a few rendered features (e.g. for highlighting a subset of features of
+ *    another layer with the same source).
  * @property {import("../source/VectorTile.js").default} [source] Source.
  * @property {import("../PluggableMap.js").default} [map] Sets the layer as overlay on a map. The map will not manage
  * this layer in its layers collection, and the layer will be rendered on top. This is useful for
@@ -92,8 +94,9 @@ class VectorTileLayer extends BaseVectorLayer {
     const renderMode = options.renderMode || VectorTileRenderType.HYBRID;
     assert(renderMode == undefined ||
         renderMode == VectorTileRenderType.IMAGE ||
-        renderMode == VectorTileRenderType.HYBRID,
-    28); // `renderMode` must be `'image'` or `'hybrid'`
+        renderMode == VectorTileRenderType.HYBRID ||
+        renderMode == VectorTileRenderType.VECTOR,
+    28); // `renderMode` must be `'image'`, `'hybrid'` or `'vector'`.
 
     /**
      * @private

src/ol/layer/VectorTileRenderType.js

@@ -11,9 +11,14 @@
  *  * `'hybrid'`: Polygon and line elements are rendered as images, so pixels
  *    are scaled during zoom animations. Point symbols and texts are accurately
  *    rendered as vectors and can stay upright on rotated views.
+ *  * `'vector'`: Everything is rendered as vectors. Use this mode for improved
+ *    performance on vector tile layers with only a few rendered features (e.g.
+ *    for highlighting a subset of features of another layer with the same
+ *    source).
  * @api
  */
 export default {
   IMAGE: 'image',
-  HYBRID: 'hybrid'
+  HYBRID: 'hybrid',
+  VECTOR: 'vector'
 };

src/ol/layer/WebGLPoints.js

@@ -24,7 +24,7 @@ import Layer from './Layer.js';
  * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will
  * be visible.
  * @property {import("../source/Vector.js").default} [source] Source.
- * @property {boolean} [disableHitDetection] Setting this to true will provide a slight performance boost, but will
+ * @property {boolean} [disableHitDetection=false] Setting this to true will provide a slight performance boost, but will
  * prevent all hit detection on the layer.
  */
 

src/ol/ol.css

@@ -74,6 +74,12 @@
   user-select: none;
   -webkit-tap-highlight-color: rgba(0,0,0,0);
 }
+.ol-overlaycontainer, .ol-overlaycontainer-stopevent {
+  pointer-events: none;
+}
+.ol-overlaycontainer > *, .ol-overlaycontainer-stopevent > * {
+  pointer-events: auto;
+}
 .ol-selectable {
   -webkit-touch-callout: default;
   -webkit-user-select: text;
@@ -144,6 +150,9 @@
   border: none;
   padding: 0;
 }
+.ol-control button span {
+  pointer-events: none;
+}
 .ol-zoom-extent button {
   line-height: 1.4em;
 }

src/ol/render/canvas.js

@@ -216,15 +216,12 @@ export const checkFont = (function() {
    * @return {boolean} Font with style and weight is available
    */
   function isAvailable(fontStyle, fontWeight, fontFamily) {
-    const context = getMeasureContext();
     let available = true;
     for (let i = 0; i < len; ++i) {
       const referenceFont = referenceFonts[i];
-      context.font = fontStyle + ' ' + fontWeight + ' ' + size + referenceFont;
-      referenceWidth = context.measureText(text).width;
+      referenceWidth = measureTextWidth(fontStyle + ' ' + fontWeight + ' ' + size + referenceFont, text);
       if (fontFamily != referenceFont) {
-        context.font = fontStyle + ' ' + fontWeight + ' ' + size + fontFamily + ',' + referenceFont;
-        const width = context.measureText(text).width;
+        const width = measureTextWidth(fontStyle + ' ' + fontWeight + ' ' + size + fontFamily + ',' + referenceFont, text);
         // If width and referenceWidth are the same, then the fallback was used
         // instead of the font we wanted, so the font is not available.
         available = available && width != referenceWidth;
@@ -284,17 +281,6 @@ export const checkFont = (function() {
 })();
 
 
-/**
- * @return {CanvasRenderingContext2D} Measure context.
- */
-function getMeasureContext() {
-  if (!measureContext) {
-    measureContext = createCanvasContext2D(1, 1);
-  }
-  return measureContext;
-}
-
-
 /**
  * @param {string} font Font to use for measuring.
  * @return {import("../size.js").Size} Measurement.
@@ -333,7 +319,9 @@ export const measureTextHeight = (function() {
  * @return {number} Width.
  */
 export function measureTextWidth(font, text) {
-  const measureContext = getMeasureContext();
+  if (!measureContext) {
+    measureContext = createCanvasContext2D(1, 1);
+  }
   if (font != measureFont) {
     measureContext.font = font;
     measureFont = measureContext.font;

src/ol/render/canvas/Executor.js

@@ -18,8 +18,7 @@ import {
 } from '../../transform.js';
 import {createCanvasContext2D} from '../../dom.js';
 import {labelCache, defaultTextAlign, measureTextHeight, measureAndCacheTextWidth, measureTextWidths} from '../canvas.js';
-import Disposable from '../../Disposable.js';
-import RBush from 'rbush';
+import RBush from 'rbush/rbush.js';
 
 
 /**
@@ -52,7 +51,7 @@ const p3 = [];
 const p4 = [];
 
 
-class Executor extends Disposable {
+class Executor {
   /**
    * @param {number} resolution Resolution.
    * @param {number} pixelRatio Pixel ratio.
@@ -60,7 +59,6 @@ class Executor extends Disposable {
    * @param {SerializableInstructions} instructions The serializable instructions
    */
   constructor(resolution, pixelRatio, overlaps, instructions) {
-    super();
 
     /**
      * @protected
@@ -156,15 +154,6 @@ class Executor extends Disposable {
     this.widths_ = {};
   }
 
-  /**
-   * @inheritDoc
-   */
-  disposeInternal() {
-    labelCache.release(this);
-    super.disposeInternal();
-  }
-
-
   /**
    * @param {string} text Text.
    * @param {string} textKey Text style key.

src/ol/render/canvas/ExecutorGroup.js

@@ -10,7 +10,6 @@ import {isEmpty} from '../../obj.js';
 import BuilderType from './BuilderType.js';
 import {create as createTransform, compose as composeTransform} from '../../transform.js';
 import Executor from './Executor.js';
-import Disposable from '../../Disposable.js';
 
 /**
  * @const
@@ -26,7 +25,7 @@ const ORDER = [
 ];
 
 
-class ExecutorGroup extends Disposable {
+class ExecutorGroup {
   /**
    * @param {import("../../extent.js").Extent} maxExtent Max extent for clipping. When a
    * `maxExtent` was set on the Buillder for this executor group, the same `maxExtent`
@@ -40,7 +39,6 @@ class ExecutorGroup extends Disposable {
    * @param {number=} opt_renderBuffer Optional rendering buffer.
    */
   constructor(maxExtent, resolution, pixelRatio, overlaps, allInstructions, opt_renderBuffer) {
-    super();
 
     /**
      * @private
@@ -128,24 +126,6 @@ class ExecutorGroup extends Disposable {
     }
   }
 
-  /**
-   * @inheritDoc
-   */
-  disposeInternal() {
-    for (const z in this.executorsByZIndex_) {
-      const executors = this.executorsByZIndex_[z];
-      for (const key in executors) {
-        executors[key].disposeInternal();
-      }
-    }
-    if (this.hitDetectionContext_) {
-      const canvas = this.hitDetectionContext_.canvas;
-      canvas.width = 0;
-      canvas.height = 0;
-    }
-
-    super.disposeInternal();
-  }
 
   /**
    * @param {Array<BuilderType>} executors Executors.

src/ol/render/canvas/LabelCache.js

@@ -1,4 +1,3 @@
-import {getUid} from '../../util.js';
 import LRUCache from '../../structs/LRUCache.js';
 
 /**
@@ -11,59 +10,11 @@ import LRUCache from '../../structs/LRUCache.js';
  */
 class LabelCache extends LRUCache {
 
-  /**
-   * @inheritDoc
-   */
-  constructor(opt_highWaterMark) {
-    super(opt_highWaterMark);
-    this.consumers = {};
-  }
-
-  clear() {
-    this.consumers = {};
-    super.clear();
-  }
-
-  /**
-   * @override
-   * @param {string} key Label key.
-   * @param {import("./Executor.js").default} consumer Label consumer.
-   * @return {HTMLCanvasElement} Label.
-   */
-  get(key, consumer) {
-    const canvas = super.get(key);
-    const consumerId = getUid(consumer);
-    if (!(consumerId in this.consumers)) {
-      this.consumers[consumerId] = {};
-    }
-    this.consumers[consumerId][key] = true;
-    return canvas;
-  }
-
-  prune() {
-    outer:
+  expireCache() {
     while (this.canExpireCache()) {
-      const key = this.peekLastKey();
-      for (const consumerId in this.consumers) {
-        if (key in this.consumers[consumerId]) {
-          break outer;
-        }
-      }
-      const canvas = this.pop();
-      canvas.width = 0;
-      canvas.height = 0;
-      for (const consumerId in this.consumers) {
-        delete this.consumers[consumerId][key];
-      }
+      this.pop();
     }
   }
-
-  /**
-   * @param {import("./Executor.js").default} consumer Label consumer.
-   */
-  release(consumer) {
-    delete this.consumers[getUid(consumer)];
-  }
 }
 
 export default LabelCache;

src/ol/render/canvas/TextBuilder.js

@@ -131,8 +131,6 @@ class CanvasTextBuilder extends CanvasBuilder {
      * @type {string}
      */
     this.strokeKey_ = '';
-
-    labelCache.prune();
   }
 
   /**
@@ -140,6 +138,7 @@ class CanvasTextBuilder extends CanvasBuilder {
    */
   finish() {
     const instructions = super.finish();
+    labelCache.expireCache();
     instructions.textStates = this.textStates;
     instructions.fillStates = this.fillStates;
     instructions.strokeStates = this.strokeStates;
@@ -461,7 +460,7 @@ class CanvasTextBuilder extends CanvasBuilder {
         strokeState.lineCap + strokeState.lineDashOffset + '|' + strokeState.lineWidth +
         strokeState.lineJoin + strokeState.miterLimit + '[' + strokeState.lineDash.join() + ']' :
         '';
-      this.textKey_ = textState.font + textState.scale + (textState.textAlign || '?');
+      this.textKey_ = textState.font + textState.scale + (textState.textAlign || '?') + (textState.textBaseline || '?');
       this.fillKey_ = fillState ?
         (typeof fillState.fillStyle == 'string' ? fillState.fillStyle : ('|' + getUid(fillState.fillStyle))) :
         '';

src/ol/render/canvas/hitdetect.js

@@ -33,15 +33,18 @@ export function createHitDetectionImageData(size, transforms, features, styleFun
   const renderer = new CanvasImmediateRenderer(context, 0.5, extent, null, rotation);
   const featureCount = features.length;
   // Stretch hit detection index to use the whole available color range
-  const indexFactor = Math.ceil((256 * 256 * 256) / featureCount);
+  const indexFactor = Math.ceil((256 * 256 * 256 - 1) / featureCount);
   const featuresByZIndex = {};
-  for (let i = 0; i < featureCount; ++i) {
-    const feature = features[i];
+  for (let i = 1; i <= featureCount; ++i) {
+    const feature = features[i - 1];
     const featureStyleFunction = feature.getStyleFunction() || styleFunction;
     if (!styleFunction) {
       continue;
     }
     let styles = featureStyleFunction(feature, resolution);
+    if (!styles) {
+      continue;
+    }
     if (!Array.isArray(styles)) {
       styles = [styles];
     }
@@ -138,9 +141,9 @@ export function hitDetect(pixel, features, imageData) {
     const g = imageData.data[index + 1];
     const b = imageData.data[index + 2];
     const i = b + (256 * (g + (256 * r)));
-    const indexFactor = Math.ceil((256 * 256 * 256) / features.length);
-    if (i % indexFactor === 0) {
-      resultFeatures.push(features[i / indexFactor]);
+    const indexFactor = Math.ceil((256 * 256 * 256 - 1) / features.length);
+    if (i && i % indexFactor === 0) {
+      resultFeatures.push(features[i / indexFactor - 1]);
     }
   }
   return resultFeatures;

src/ol/renderer/Composite.js

@@ -74,6 +74,7 @@ class CompositeMapRenderer extends MapRenderer {
 
   disposeInternal() {
     unlistenByKey(this.labelCacheKey_);
+    this.element_.parentNode.removeChild(this.element_);
     super.disposeInternal();
   }