Some more openlayers improvments as well as initial work for projection support

package.json

@@ -39,6 +39,7 @@
     "maputnik-design": "github:maputnik/design",
     "ol": "^6.0.0-beta.8",
     "ol-mapbox-style": "^5.0.0-beta.2",
+    "proj4": "^2.5.0",
     "prop-types": "^15.6.2",
     "react": "^16.5.2",
     "react-aria-menubutton": "^6.0.1",

src/components/App.jsx

@@ -218,6 +218,11 @@ export default class App extends React.Component {
         showCollisionBoxes: false,
         showOverdrawInspector: false,
       },
+      openlayersDebugOptions: {
+        // TODO: For future projection work
+        // enableProjections: true,
+        debugToolbox: true,
+      },
     }
 
     this.layerWatcher = new LayerWatcher({
@@ -478,10 +483,16 @@ export default class App extends React.Component {
     return metadata['maputnik:renderer'] || 'mbgljs';
   }
 
+  getProjectionCode () {
+    const metadata = this.state.mapStyle.metadata || {};
+    return this.state.openlayersDebugOptions.enableProjections ? metadata['maputnik:projection'] : "EPSG:3857";
+  }
+
   mapRenderer() {
+    const metadata = this.state.mapStyle.metadata || {};
+
     const mapProps = {
       mapStyle: style.replaceAccessTokens(this.state.mapStyle, {allowFallback: true}),
-      options: this.state.mapboxGlDebugOptions,
       onDataChange: (e) => {
         this.layerWatcher.analyzeMap(e.map)
         this.fetchSources();
@@ -496,9 +507,13 @@ export default class App extends React.Component {
     if(renderer === 'ol') {
       mapElement = <OpenLayersMap
         {...mapProps}
+        projectionCode={this.getProjectionCode()}
+        debugToolbox={this.state.openlayersDebugOptions.debugToolbox}
+        onLayerSelect={this.onLayerSelect}
       />
     } else {
       mapElement = <MapboxGlMap {...mapProps}
+        options={this.state.mapboxGlDebugOptions}
         inspectModeEnabled={this.state.mapState === "inspect"}
         highlightedLayer={this.state.mapStyle.layers[this.state.selectedLayerIndex]}
         onLayerSelect={this.onLayerSelect} />
@@ -540,6 +555,15 @@ export default class App extends React.Component {
     this.setModal(modalName, !this.state.isOpen[modalName]);
   }
 
+  onChangeOpenlayersDebug = (key, value) => {
+    this.setState({
+      openlayersDebugOptions: {
+        ...this.state.openlayersDebugOptions,
+        [key]: value,
+      }
+    });
+  }
+
   onChangeMaboxGlDebug = (key, value) => {
     this.setState({
       mapboxGlDebugOptions: {
@@ -555,6 +579,7 @@ export default class App extends React.Component {
     const metadata = this.state.mapStyle.metadata || {}
 
     const toolbar = <Toolbar
+      renderer={this._getRenderer()}
       mapState={this.state.mapState}
       mapStyle={this.state.mapStyle}
       inspectModeEnabled={this.state.mapState === "inspect"}
@@ -603,7 +628,9 @@ export default class App extends React.Component {
       <DebugModal
         renderer={this._getRenderer()}
         mapboxGlDebugOptions={this.state.mapboxGlDebugOptions}
+        openlayersDebugOptions={this.state.openlayersDebugOptions}
         onChangeMaboxGlDebug={this.onChangeMaboxGlDebug}
+        onChangeOpenlayersDebug={this.onChangeOpenlayersDebug}
         isOpen={this.state.isOpen.debug}
         onOpenToggle={this.toggleModal.bind(this, 'debug')}
       />
@@ -617,6 +644,7 @@ export default class App extends React.Component {
         onStyleChanged={this.onStyleChanged}
         isOpen={this.state.isOpen.settings}
         onOpenToggle={this.toggleModal.bind(this, 'settings')}
+        openlayersDebugOptions={this.state.openlayersDebugOptions}
       />
       <ExportModal
         mapStyle={this.state.mapStyle}

src/components/Toolbar.jsx

@@ -139,6 +139,7 @@ export default class Toolbar extends React.Component {
       {
         id: "inspect",
         title: "Inspect",
+        disabled: this.props.renderer !== 'mbgljs',
       },
       {
         id: "filter-deuteranopia",

src/components/map/FeatureLayerPopup.jsx

@@ -34,6 +34,11 @@ class FeatureLayerPopup extends React.Component {
   }
 
   _getFeatureColor(feature, zoom) {
+    // Guard because openlayers won't have this
+    if (!feature.layer.paint) {
+      return;
+    }
+
     try {
       const paintProps = feature.layer.paint;
       let propName;
@@ -105,11 +110,13 @@ class FeatureLayerPopup extends React.Component {
               this.props.onLayerSelect(feature.layer.id)
             }}
           >
-            <LayerIcon type={feature.layer.type} style={{
-              width: 14,
-              height: 14,
-              paddingRight: 3
-            }}/>
+            {feature.layer.type && 
+              <LayerIcon type={feature.layer.type} style={{
+                width: 14,
+                height: 14,
+                paddingRight: 3
+              }}/>
+            }
             {feature.layer.id}
             {feature.counter && <span> × {feature.counter}</span>}
           </label>

src/components/map/OpenLayersMap.jsx

@@ -3,10 +3,32 @@ import {throttle} from 'lodash';
 import PropTypes from 'prop-types'
 import { loadJSON } from '../../libs/urlopen'
 
+import FeatureLayerPopup from './FeatureLayerPopup';
+
 import 'ol/ol.css'
 import {apply} from 'ol-mapbox-style';
-import {Map, View} from 'ol';
+import {Map, View, Proj, Overlay} from 'ol';
 
+import proj4 from 'proj4';
+import {register} from 'ol/proj/proj4';
+import {get as getProjection, toLonLat} from 'ol/proj';
+import {toStringHDMS} from 'ol/coordinate';
+
+// Register some projections...
+proj4.defs('EPSG:3031', '+proj=stere +lat_0=-90 +lat_ts=-71 +lon_0=0 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs ');
+register(proj4);
+
+
+function renderCoords (coords) {
+  if (!coords || coords.length < 2) {
+    return null;
+  }
+  else {
+    return <span className="maputnik-coords">
+      {coords.map((coord) => String(coord).padStart(7, "\u00A0")).join(', ')}
+    </span>
+  }
+}
 
 export default class OpenLayersMap extends React.Component {
   static propTypes = {
@@ -14,15 +36,23 @@ export default class OpenLayersMap extends React.Component {
     mapStyle: PropTypes.object.isRequired,
     accessToken: PropTypes.string,
     style: PropTypes.object,
+    onLayerSelect: PropTypes.func.isRequired,
   }
 
   static defaultProps = {
     onMapLoaded: () => {},
     onDataChange: () => {},
+    onLayerSelect: () => {},
   }
 
   constructor(props) {
     super(props);
+    this.state = {
+      zoom: 0,
+      rotation: 0,
+      cursor: [],
+      center: [],
+    };
     this.updateStyle = throttle(this._updateStyle.bind(this), 200);
   }
 
@@ -34,33 +64,125 @@ export default class OpenLayersMap extends React.Component {
     apply(this.map, newMapStyle);
   }
 
-  componentDidUpdate() {
-    this.updateStyle(this.props.mapStyle);
+  updateProjection () {
+    this.projection = getProjection(this.props.projectionCode || "EPSG:3857");
+  }
+
+  componentDidUpdate(prevProps) {
+    if (this.props.projectionCode !== prevProps.projectionCode) {
+      this.updateProjection();
+      this.map.setView(
+        new View({
+          projection: this.projection,
+          zoom: 1,
+          center: [180, -90]
+        })
+      );
+    }
+    if (this.props.mapStyle !== prevProps.mapStyle) {
+      this.updateStyle(this.props.mapStyle);
+    }
   }
 
   componentDidMount() {
-    this.updateStyle(this.props.mapStyle);
+    this.overlay = new Overlay({
+      element: this.popupContainer,
+      autoPan: true,
+      autoPanAnimation: {
+        duration: 250
+      }
+    });
+
+    this.updateProjection();
 
     const map = new Map({
       target: this.container,
-      layers: [],
+      overlays: [this.overlay],
       view: new View({
-        zoom: 2,
-        center: [52.5, -78.4]
+        projection: this.projection,
+        zoom: 1,
+        center: [180, -90],
+      })
+    });
+
+    map.on('pointermove', (evt) => {
+      var coords = toLonLat(evt.coordinate, this.projection);
+      this.setState({
+        cursor: [
+          coords[0].toFixed(2),
+          coords[1].toFixed(2)
+        ]
       })
     })
+
+    map.on('postrender', (evt) => {
+      const center = toLonLat(map.getView().getCenter(), this.projection);
+      this.setState({
+        center: [
+          center[0].toFixed(2),
+          center[1].toFixed(2),
+        ],
+        rotation: map.getView().getRotation().toFixed(2),
+        zoom: map.getView().getZoom().toFixed(2)
+      });
+    });
+
+
+
     this.map = map;
+    this.updateStyle(this.props.mapStyle);
+  }
+
+  closeOverlay = (e) => {
+    e.target.blur();
+    this.overlay.setPosition(undefined);
   }
 
   render() {
-    return <div
-      ref={x => this.container = x}
-      style={{
-        width: "100%",
-        height: "100%",
-        backgroundColor: '#fff',
-        ...this.props.style,
-      }}>
+    return <div className="maputnik-ol-container">
+      <div
+        ref={x => this.popupContainer = x}
+        style={{background: "black"}}
+        className="maputnik-popup"
+      >
+        <button
+          class="mapboxgl-popup-close-button"
+          onClick={this.closeOverlay}
+          aria-label="Close popup"
+        >
+          ×
+        </button>
+        <FeatureLayerPopup
+          features={this.state.selectedFeatures || []}
+          onLayerSelect={this.props.onLayerSelect}
+        />
+      </div>
+      <div className="maputnik-ol-zoom">
+        Zoom level: {this.state.zoom}
+      </div>
+      {this.props.debugToolbox &&
+        <div className="maputnik-ol-debug">
+          <div>
+            <label>cursor: </label>
+            <span>{renderCoords(this.state.cursor)}</span>
+          </div>
+          <div>
+            <label>center: </label>
+            <span>{renderCoords(this.state.center)}</span>
+          </div>
+          <div>
+            <label>rotation: </label>
+            <span>{this.state.rotation}</span>
+          </div>
+        </div>
+      }
+      <div
+        className="maputnik-ol"
+        ref={x => this.container = x}
+        style={{
+          ...this.props.style,
+        }}>
+      </div>
     </div>
   }
 }

src/components/modals/DebugModal.js

@@ -11,6 +11,7 @@ class DebugModal extends React.Component {
     onChangeMaboxGlDebug: PropTypes.func.isRequired,
     onOpenToggle: PropTypes.func.isRequired,
     mapboxGlDebugOptions: PropTypes.object,
+    openlayersDebugOptions: PropTypes.object,
   }
 
   render() {
@@ -33,9 +34,15 @@ class DebugModal extends React.Component {
           </ul>
         }
         {this.props.renderer === 'ol' &&
-          <div>
-            No debug options available for the OpenLayers renderer
-          </div>
+          <ul>
+            {Object.entries(this.props.openlayersDebugOptions).map(([key, val]) => {
+              return <li key={key}>
+                <label>
+                  <input type="checkbox" checked={val} onClick={(e) => this.props.onChangeOpenlayersDebug(key, e.target.checked)} /> {key}
+                </label>
+              </li>
+            })}
+          </ul>
         }
       </div>
     </Modal>

src/components/modals/SettingsModal.jsx

@@ -109,6 +109,21 @@ class SettingsModal extends React.Component {
           onChange={this.changeMetadataProperty.bind(this, 'maputnik:renderer')}
         />
       </InputBlock>
+
+      {this.props.openlayersDebugOptions.enableProjections &&
+        <InputBlock label={"Projection (experimental)"} doc={"Projection of the data"}>
+          <SelectInput {...inputProps}
+            data-wd-key="modal-settings.maputnik:projection" 
+            options={[
+              ['EPSG:3857', '[EPSG:3857] Web Mercator'],
+              ['EPSG:3031', '[EPSG:3031] Antarctic Polar Stereographic (experimental)'],
+            ]}
+            value={metadata['maputnik:projection'] || 'EPSG:3857'}
+            onChange={this.changeMetadataProperty.bind(this, 'maputnik:projection')}
+          />
+        </InputBlock>
+      }
+
       </div>
     </Modal>
   }

src/styles/_map.scss

@@ -1,7 +1,13 @@
 //OPENLAYERS
 .maputnik-layout {
   .ol-zoom {
-    top: 10px;
+    top: 40px;
+    right: 10px;
+    left: auto;
+  }
+
+  .ol-rotate {
+    top: 94px;
     right: 10px;
     left: auto;
   }
@@ -20,3 +26,57 @@
     }
   }
 }
+
+
+.maputnik-ol {
+  width: 100%;
+  height: 100%;
+}
+
+.maputnik-ol-popup {
+  background: $color-black;
+
+}
+
+.maputnik-coords {
+  font-family: monospace;
+  &:before {
+    content: '[';
+    color: #888;
+  }
+  &:after {
+    content: ']';
+    color: #888;
+  }
+}
+
+.maputnik-ol-debug {
+  font-family: monospace;
+  font-size: smaller;
+  position: absolute;
+  bottom: 10px;
+  left: 10px;
+  background: rgb(28, 31, 36);
+  padding: 6px 8px;
+  border-radius: 2px;
+  z-indeX: 9999;
+}
+
+.maputnik-ol-zoom {
+  position: absolute;
+  right: 10px;
+  top: 10px;
+  background: #1c1f24;
+  border-radius: 2px;
+  padding: 6px 8px;
+  color: $color-lowgray;
+  z-indeX: 9999;
+  font-size: 12px;
+  font-weight: bold;
+}
+
+.maputnik-ol-container {
+  display: flex;
+  flex: 1;
+  position: relative;
+}

src/styles/_popup.scss

@@ -22,7 +22,7 @@
 
 .maputnik-popup-layer-id {
   padding-left: $margin-2;
-  padding-right: $margin-2;
+  padding-right: 1.6em;
   background-color: $color-midgray;
   color: $color-white;
 }