From 6c9e3cbc06ba9f90835f5d00f5f52cee0a071564 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Noee=CC=88l=20Moeskops?= Date: Tue, 25 Oct 2016 16:49:59 +0200 Subject: [PATCH] added test folder for testing and example. --- bower.json | 3 +- test/markerclusterer.js | 1315 +++++++++++++++++++++++++++++++++++++++ test/test.html | 108 ++++ 3 files changed, 1425 insertions(+), 1 deletion(-) create mode 100644 test/markerclusterer.js create mode 100644 test/test.html diff --git a/bower.json b/bower.json index fa76c18..35d5d8c 100644 --- a/bower.json +++ b/bower.json @@ -2,7 +2,7 @@ "name": "GMap", "homepage": "https://github.com/Noedel-Man/GMap", "authors": [ - "Noeël Moeskops" + "Noe√´l Moeskops" ], "description": "google maps api js class, with custom markers and legenda's", "main": "./dist/Gmap.es5.min.js", @@ -15,6 +15,7 @@ "license": "MIT", "private": false, "ignore": [ + "test", "node_modules", "bower_components" ], diff --git a/test/markerclusterer.js b/test/markerclusterer.js new file mode 100644 index 0000000..554fcec --- /dev/null +++ b/test/markerclusterer.js @@ -0,0 +1,1315 @@ +// ==ClosureCompiler== +// @compilation_level ADVANCED_OPTIMIZATIONS +// @externs_url https://raw.githubusercontent.com/google/closure-compiler/master/contrib/externs/maps/google_maps_api_v3.js +// ==/ClosureCompiler== + +/** + * @name MarkerClusterer for Google Maps v3 + * @version version 1.0 + * @author Luke Mahe + * @fileoverview + * The library creates and manages per-zoom-level clusters for large amounts of + * markers. + *
+ * This is a v3 implementation of the + * v2 MarkerClusterer. + */ + +/** + * @license + * Copyright 2010 Google Inc. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +/** + * A Marker Clusterer that clusters markers. + * + * @param {google.maps.Map} map The Google map to attach to. + * @param {Array.=} opt_markers Optional markers to add to + * the cluster. + * @param {Object=} opt_options support the following options: + * 'gridSize': (number) The grid size of a cluster in pixels. + * 'maxZoom': (number) The maximum zoom level that a marker can be part of a + * cluster. + * 'zoomOnClick': (boolean) Whether the default behaviour of clicking on a + * cluster is to zoom into it. + * 'averageCenter': (boolean) Whether the center of each cluster should be + * the average of all markers in the cluster. + * 'minimumClusterSize': (number) The minimum number of markers to be in a + * cluster before the markers are hidden and a count + * is shown. + * 'styles': (object) An object that has style properties: + * 'url': (string) The image url. + * 'height': (number) The image height. + * 'width': (number) The image width. + * 'anchor': (Array) The anchor position of the label text. + * 'textColor': (string) The text color. + * 'textSize': (number) The text size. + * 'backgroundPosition': (string) The position of the backgound x, y. + * 'iconAnchor': (Array) The anchor position of the icon x, y. + * @constructor + * @extends google.maps.OverlayView + */ +function MarkerClusterer(map, opt_markers, opt_options) { + // MarkerClusterer implements google.maps.OverlayView interface. We use the + // extend function to extend MarkerClusterer with google.maps.OverlayView + // because it might not always be available when the code is defined so we + // look for it at the last possible moment. If it doesn't exist now then + // there is no point going ahead :) + this.extend(MarkerClusterer, google.maps.OverlayView); + this.map_ = map; + + /** + * @type {Array.} + * @private + */ + this.markers_ = []; + + /** + * @type {Array.} + */ + this.clusters_ = []; + + this.sizes = [53, 56, 66, 78, 90]; + + /** + * @private + */ + this.styles_ = []; + + /** + * @type {boolean} + * @private + */ + this.ready_ = false; + + var options = opt_options || {}; + + /** + * @type {number} + * @private + */ + this.gridSize_ = options['gridSize'] || 60; + + /** + * @private + */ + this.minClusterSize_ = options['minimumClusterSize'] || 2; + + + /** + * @type {?number} + * @private + */ + this.maxZoom_ = options['maxZoom'] || null; + + this.styles_ = options['styles'] || []; + + /** + * @type {string} + * @private + */ + this.imagePath_ = options['imagePath'] || + this.MARKER_CLUSTER_IMAGE_PATH_; + + /** + * @type {string} + * @private + */ + this.imageExtension_ = options['imageExtension'] || + this.MARKER_CLUSTER_IMAGE_EXTENSION_; + + /** + * @type {boolean} + * @private + */ + this.zoomOnClick_ = true; + + if (options['zoomOnClick'] != undefined) { + this.zoomOnClick_ = options['zoomOnClick']; + } + + /** + * @type {boolean} + * @private + */ + this.averageCenter_ = false; + + if (options['averageCenter'] != undefined) { + this.averageCenter_ = options['averageCenter']; + } + + this.setupStyles_(); + + this.setMap(map); + + /** + * @type {number} + * @private + */ + this.prevZoom_ = this.map_.getZoom(); + + // Add the map event listeners + var that = this; + google.maps.event.addListener(this.map_, 'zoom_changed', function() { + var zoom = that.map_.getZoom(); + + if (that.prevZoom_ != zoom) { + that.prevZoom_ = zoom; + that.resetViewport(); + } + }); + + google.maps.event.addListener(this.map_, 'idle', function() { + that.redraw(); + }); + + // Finally, add the markers + if (opt_markers && opt_markers.length) { + this.addMarkers(opt_markers, false); + } +} + + +/** + * The marker cluster image path. + * + * @type {string} + * @private + */ +MarkerClusterer.prototype.MARKER_CLUSTER_IMAGE_PATH_ = '../images/m'; + + +/** + * The marker cluster image path. + * + * @type {string} + * @private + */ +MarkerClusterer.prototype.MARKER_CLUSTER_IMAGE_EXTENSION_ = 'png'; + + +/** + * Extends a objects prototype by anothers. + * + * @param {Object} obj1 The object to be extended. + * @param {Object} obj2 The object to extend with. + * @return {Object} The new extended object. + * @ignore + */ +MarkerClusterer.prototype.extend = function(obj1, obj2) { + return (function(object) { + for (var property in object.prototype) { + this.prototype[property] = object.prototype[property]; + } + return this; + }).apply(obj1, [obj2]); +}; + + +/** + * Implementaion of the interface method. + * @ignore + */ +MarkerClusterer.prototype.onAdd = function() { + this.setReady_(true); +}; + +/** + * Implementaion of the interface method. + * @ignore + */ +MarkerClusterer.prototype.draw = function() {}; + +/** + * Sets up the styles object. + * + * @private + */ +MarkerClusterer.prototype.setupStyles_ = function() { + if (this.styles_.length) { + return; + } + + for (var i = 0, size; size = this.sizes[i]; i++) { + this.styles_.push({ + url: this.imagePath_ + (i + 1) + '.' + this.imageExtension_, + height: size, + width: size + }); + } +}; + +/** + * Fit the map to the bounds of the markers in the clusterer. + */ +MarkerClusterer.prototype.fitMapToMarkers = function() { + var markers = this.getMarkers(); + var bounds = new google.maps.LatLngBounds(); + for (var i = 0, marker; marker = markers[i]; i++) { + bounds.extend(marker.getPosition()); + } + + this.map_.fitBounds(bounds); +}; + + +/** + * Sets the styles. + * + * @param {Object} styles The style to set. + */ +MarkerClusterer.prototype.setStyles = function(styles) { + this.styles_ = styles; +}; + + +/** + * Gets the styles. + * + * @return {Object} The styles object. + */ +MarkerClusterer.prototype.getStyles = function() { + return this.styles_; +}; + + +/** + * Whether zoom on click is set. + * + * @return {boolean} True if zoomOnClick_ is set. + */ +MarkerClusterer.prototype.isZoomOnClick = function() { + return this.zoomOnClick_; +}; + +/** + * Whether average center is set. + * + * @return {boolean} True if averageCenter_ is set. + */ +MarkerClusterer.prototype.isAverageCenter = function() { + return this.averageCenter_; +}; + + +/** + * Returns the array of markers in the clusterer. + * + * @return {Array.} The markers. + */ +MarkerClusterer.prototype.getMarkers = function() { + return this.markers_; +}; + + +/** + * Returns the number of markers in the clusterer + * + * @return {Number} The number of markers. + */ +MarkerClusterer.prototype.getTotalMarkers = function() { + return this.markers_.length; +}; + + +/** + * Sets the max zoom for the clusterer. + * + * @param {number} maxZoom The max zoom level. + */ +MarkerClusterer.prototype.setMaxZoom = function(maxZoom) { + this.maxZoom_ = maxZoom; +}; + + +/** + * Gets the max zoom for the clusterer. + * + * @return {number} The max zoom level. + */ +MarkerClusterer.prototype.getMaxZoom = function() { + return this.maxZoom_; +}; + + +/** + * The function for calculating the cluster icon image. + * + * @param {Array.} markers The markers in the clusterer. + * @param {number} numStyles The number of styles available. + * @return {Object} A object properties: 'text' (string) and 'index' (number). + * @private + */ +MarkerClusterer.prototype.calculator_ = function(markers, numStyles) { + var index = 0; + var count = markers.length; + var dv = count; + while (dv !== 0) { + dv = parseInt(dv / 10, 10); + index++; + } + + index = Math.min(index, numStyles); + return { + text: count, + index: index + }; +}; + + +/** + * Set the calculator function. + * + * @param {function(Array, number)} calculator The function to set as the + * calculator. The function should return a object properties: + * 'text' (string) and 'index' (number). + * + */ +MarkerClusterer.prototype.setCalculator = function(calculator) { + this.calculator_ = calculator; +}; + + +/** + * Get the calculator function. + * + * @return {function(Array, number)} the calculator function. + */ +MarkerClusterer.prototype.getCalculator = function() { + return this.calculator_; +}; + + +/** + * Add an array of markers to the clusterer. + * + * @param {Array.} markers The markers to add. + * @param {boolean=} opt_nodraw Whether to redraw the clusters. + */ +MarkerClusterer.prototype.addMarkers = function(markers, opt_nodraw) { + for (var i = 0, marker; marker = markers[i]; i++) { + this.pushMarkerTo_(marker); + } + if (!opt_nodraw) { + this.redraw(); + } +}; + + +/** + * Pushes a marker to the clusterer. + * + * @param {google.maps.Marker} marker The marker to add. + * @private + */ +MarkerClusterer.prototype.pushMarkerTo_ = function(marker) { + marker.isAdded = false; + if (marker['draggable']) { + // If the marker is draggable add a listener so we update the clusters on + // the drag end. + var that = this; + google.maps.event.addListener(marker, 'dragend', function() { + marker.isAdded = false; + that.repaint(); + }); + } + this.markers_.push(marker); +}; + + +/** + * Adds a marker to the clusterer and redraws if needed. + * + * @param {google.maps.Marker} marker The marker to add. + * @param {boolean=} opt_nodraw Whether to redraw the clusters. + */ +MarkerClusterer.prototype.addMarker = function(marker, opt_nodraw) { + this.pushMarkerTo_(marker); + if (!opt_nodraw) { + this.redraw(); + } +}; + + +/** + * Removes a marker and returns true if removed, false if not + * + * @param {google.maps.Marker} marker The marker to remove + * @return {boolean} Whether the marker was removed or not + * @private + */ +MarkerClusterer.prototype.removeMarker_ = function(marker) { + var index = -1; + if (this.markers_.indexOf) { + index = this.markers_.indexOf(marker); + } else { + for (var i = 0, m; m = this.markers_[i]; i++) { + if (m == marker) { + index = i; + break; + } + } + } + + if (index == -1) { + // Marker is not in our list of markers. + return false; + } + + marker.setMap(null); + + this.markers_.splice(index, 1); + + return true; +}; + + +/** + * Remove a marker from the cluster. + * + * @param {google.maps.Marker} marker The marker to remove. + * @param {boolean=} opt_nodraw Optional boolean to force no redraw. + * @return {boolean} True if the marker was removed. + */ +MarkerClusterer.prototype.removeMarker = function(marker, opt_nodraw) { + var removed = this.removeMarker_(marker); + + if (!opt_nodraw && removed) { + this.resetViewport(); + this.redraw(); + return true; + } else { + return false; + } +}; + + +/** + * Removes an array of markers from the cluster. + * + * @param {Array.} markers The markers to remove. + * @param {boolean=} opt_nodraw Optional boolean to force no redraw. + */ +MarkerClusterer.prototype.removeMarkers = function(markers, opt_nodraw) { + var removed = false; + + for (var i = 0, marker; marker = markers[i]; i++) { + var r = this.removeMarker_(marker); + removed = removed || r; + } + + if (!opt_nodraw && removed) { + this.resetViewport(); + this.redraw(); + return true; + } +}; + + +/** + * Sets the clusterer's ready state. + * + * @param {boolean} ready The state. + * @private + */ +MarkerClusterer.prototype.setReady_ = function(ready) { + if (!this.ready_) { + this.ready_ = ready; + this.createClusters_(); + } +}; + + +/** + * Returns the number of clusters in the clusterer. + * + * @return {number} The number of clusters. + */ +MarkerClusterer.prototype.getTotalClusters = function() { + return this.clusters_.length; +}; + + +/** + * Returns the google map that the clusterer is associated with. + * + * @return {google.maps.Map} The map. + */ +MarkerClusterer.prototype.getMap = function() { + return this.map_; +}; + + +/** + * Sets the google map that the clusterer is associated with. + * + * @param {google.maps.Map} map The map. + */ +MarkerClusterer.prototype.setMap = function(map) { + this.map_ = map; +}; + + +/** + * Returns the size of the grid. + * + * @return {number} The grid size. + */ +MarkerClusterer.prototype.getGridSize = function() { + return this.gridSize_; +}; + + +/** + * Sets the size of the grid. + * + * @param {number} size The grid size. + */ +MarkerClusterer.prototype.setGridSize = function(size) { + this.gridSize_ = size; +}; + + +/** + * Returns the min cluster size. + * + * @return {number} The grid size. + */ +MarkerClusterer.prototype.getMinClusterSize = function() { + return this.minClusterSize_; +}; + +/** + * Sets the min cluster size. + * + * @param {number} size The grid size. + */ +MarkerClusterer.prototype.setMinClusterSize = function(size) { + this.minClusterSize_ = size; +}; + + +/** + * Extends a bounds object by the grid size. + * + * @param {google.maps.LatLngBounds} bounds The bounds to extend. + * @return {google.maps.LatLngBounds} The extended bounds. + */ +MarkerClusterer.prototype.getExtendedBounds = function(bounds) { + var projection = this.getProjection(); + + // Turn the bounds into latlng. + var tr = new google.maps.LatLng(bounds.getNorthEast().lat(), + bounds.getNorthEast().lng()); + var bl = new google.maps.LatLng(bounds.getSouthWest().lat(), + bounds.getSouthWest().lng()); + + // Convert the points to pixels and the extend out by the grid size. + var trPix = projection.fromLatLngToDivPixel(tr); + trPix.x += this.gridSize_; + trPix.y -= this.gridSize_; + + var blPix = projection.fromLatLngToDivPixel(bl); + blPix.x -= this.gridSize_; + blPix.y += this.gridSize_; + + // Convert the pixel points back to LatLng + var ne = projection.fromDivPixelToLatLng(trPix); + var sw = projection.fromDivPixelToLatLng(blPix); + + // Extend the bounds to contain the new bounds. + bounds.extend(ne); + bounds.extend(sw); + + return bounds; +}; + + +/** + * Determins if a marker is contained in a bounds. + * + * @param {google.maps.Marker} marker The marker to check. + * @param {google.maps.LatLngBounds} bounds The bounds to check against. + * @return {boolean} True if the marker is in the bounds. + * @private + */ +MarkerClusterer.prototype.isMarkerInBounds_ = function(marker, bounds) { + return bounds.contains(marker.getPosition()); +}; + + +/** + * Clears all clusters and markers from the clusterer. + */ +MarkerClusterer.prototype.clearMarkers = function() { + this.resetViewport(true); + + // Set the markers a empty array. + this.markers_ = []; +}; + + +/** + * Clears all existing clusters and recreates them. + * @param {boolean} opt_hide To also hide the marker. + */ +MarkerClusterer.prototype.resetViewport = function(opt_hide) { + // Remove all the clusters + for (var i = 0, cluster; cluster = this.clusters_[i]; i++) { + cluster.remove(); + } + + // Reset the markers to not be added and to be invisible. + for (var i = 0, marker; marker = this.markers_[i]; i++) { + marker.isAdded = false; + if (opt_hide) { + marker.setMap(null); + } + } + + this.clusters_ = []; +}; + +/** + * + */ +MarkerClusterer.prototype.repaint = function() { + var oldClusters = this.clusters_.slice(); + this.clusters_.length = 0; + this.resetViewport(); + this.redraw(); + + // Remove the old clusters. + // Do it in a timeout so the other clusters have been drawn first. + window.setTimeout(function() { + for (var i = 0, cluster; cluster = oldClusters[i]; i++) { + cluster.remove(); + } + }, 0); +}; + + +/** + * Redraws the clusters. + */ +MarkerClusterer.prototype.redraw = function() { + this.createClusters_(); +}; + + +/** + * Calculates the distance between two latlng locations in km. + * @see http://www.movable-type.co.uk/scripts/latlong.html + * + * @param {google.maps.LatLng} p1 The first lat lng point. + * @param {google.maps.LatLng} p2 The second lat lng point. + * @return {number} The distance between the two points in km. + * @private +*/ +MarkerClusterer.prototype.distanceBetweenPoints_ = function(p1, p2) { + if (!p1 || !p2) { + return 0; + } + + var R = 6371; // Radius of the Earth in km + var dLat = (p2.lat() - p1.lat()) * Math.PI / 180; + var dLon = (p2.lng() - p1.lng()) * Math.PI / 180; + var a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + + Math.cos(p1.lat() * Math.PI / 180) * Math.cos(p2.lat() * Math.PI / 180) * + Math.sin(dLon / 2) * Math.sin(dLon / 2); + var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); + var d = R * c; + return d; +}; + + +/** + * Add a marker to a cluster, or creates a new cluster. + * + * @param {google.maps.Marker} marker The marker to add. + * @private + */ +MarkerClusterer.prototype.addToClosestCluster_ = function(marker) { + var distance = 40000; // Some large number + var clusterToAddTo = null; + var pos = marker.getPosition(); + for (var i = 0, cluster; cluster = this.clusters_[i]; i++) { + var center = cluster.getCenter(); + if (center) { + var d = this.distanceBetweenPoints_(center, marker.getPosition()); + if (d < distance) { + distance = d; + clusterToAddTo = cluster; + } + } + } + + if (clusterToAddTo && clusterToAddTo.isMarkerInClusterBounds(marker)) { + clusterToAddTo.addMarker(marker); + } else { + var cluster = new Cluster(this); + cluster.addMarker(marker); + this.clusters_.push(cluster); + } +}; + + +/** + * Creates the clusters. + * + * @private + */ +MarkerClusterer.prototype.createClusters_ = function() { + if (!this.ready_) { + return; + } + + // Get our current map view bounds. + // Create a new bounds object so we don't affect the map. + var mapBounds = new google.maps.LatLngBounds(this.map_.getBounds().getSouthWest(), + this.map_.getBounds().getNorthEast()); + var bounds = this.getExtendedBounds(mapBounds); + + for (var i = 0, marker; marker = this.markers_[i]; i++) { + if (!marker.isAdded && this.isMarkerInBounds_(marker, bounds)) { + this.addToClosestCluster_(marker); + } + } +}; + + +/** + * A cluster that contains markers. + * + * @param {MarkerClusterer} markerClusterer The markerclusterer that this + * cluster is associated with. + * @constructor + * @ignore + */ +function Cluster(markerClusterer) { + this.markerClusterer_ = markerClusterer; + this.map_ = markerClusterer.getMap(); + this.gridSize_ = markerClusterer.getGridSize(); + this.minClusterSize_ = markerClusterer.getMinClusterSize(); + this.averageCenter_ = markerClusterer.isAverageCenter(); + this.center_ = null; + this.markers_ = []; + this.bounds_ = null; + this.clusterIcon_ = new ClusterIcon(this, markerClusterer.getStyles(), + markerClusterer.getGridSize()); +} + +/** + * Determins if a marker is already added to the cluster. + * + * @param {google.maps.Marker} marker The marker to check. + * @return {boolean} True if the marker is already added. + */ +Cluster.prototype.isMarkerAlreadyAdded = function(marker) { + if (this.markers_.indexOf) { + return this.markers_.indexOf(marker) != -1; + } else { + for (var i = 0, m; m = this.markers_[i]; i++) { + if (m == marker) { + return true; + } + } + } + return false; +}; + + +/** + * Add a marker the cluster. + * + * @param {google.maps.Marker} marker The marker to add. + * @return {boolean} True if the marker was added. + */ +Cluster.prototype.addMarker = function(marker) { + if (this.isMarkerAlreadyAdded(marker)) { + return false; + } + + if (!this.center_) { + this.center_ = marker.getPosition(); + this.calculateBounds_(); + } else { + if (this.averageCenter_) { + var l = this.markers_.length + 1; + var lat = (this.center_.lat() * (l-1) + marker.getPosition().lat()) / l; + var lng = (this.center_.lng() * (l-1) + marker.getPosition().lng()) / l; + this.center_ = new google.maps.LatLng(lat, lng); + this.calculateBounds_(); + } + } + + marker.isAdded = true; + this.markers_.push(marker); + + var len = this.markers_.length; + if (len < this.minClusterSize_ && marker.getMap() != this.map_) { + // Min cluster size not reached so show the marker. + marker.setMap(this.map_); + } + + if (len == this.minClusterSize_) { + // Hide the markers that were showing. + for (var i = 0; i < len; i++) { + this.markers_[i].setMap(null); + } + } + + if (len >= this.minClusterSize_) { + marker.setMap(null); + } + + this.updateIcon(); + return true; +}; + + +/** + * Returns the marker clusterer that the cluster is associated with. + * + * @return {MarkerClusterer} The associated marker clusterer. + */ +Cluster.prototype.getMarkerClusterer = function() { + return this.markerClusterer_; +}; + + +/** + * Returns the bounds of the cluster. + * + * @return {google.maps.LatLngBounds} the cluster bounds. + */ +Cluster.prototype.getBounds = function() { + var bounds = new google.maps.LatLngBounds(this.center_, this.center_); + var markers = this.getMarkers(); + for (var i = 0, marker; marker = markers[i]; i++) { + bounds.extend(marker.getPosition()); + } + return bounds; +}; + + +/** + * Removes the cluster + */ +Cluster.prototype.remove = function() { + this.clusterIcon_.remove(); + this.markers_.length = 0; + delete this.markers_; +}; + + +/** + * Returns the center of the cluster. + * + * @return {number} The cluster center. + */ +Cluster.prototype.getSize = function() { + return this.markers_.length; +}; + + +/** + * Returns the center of the cluster. + * + * @return {Array.} The cluster center. + */ +Cluster.prototype.getMarkers = function() { + return this.markers_; +}; + + +/** + * Returns the center of the cluster. + * + * @return {google.maps.LatLng} The cluster center. + */ +Cluster.prototype.getCenter = function() { + return this.center_; +}; + + +/** + * Calculated the extended bounds of the cluster with the grid. + * + * @private + */ +Cluster.prototype.calculateBounds_ = function() { + var bounds = new google.maps.LatLngBounds(this.center_, this.center_); + this.bounds_ = this.markerClusterer_.getExtendedBounds(bounds); +}; + + +/** + * Determines if a marker lies in the clusters bounds. + * + * @param {google.maps.Marker} marker The marker to check. + * @return {boolean} True if the marker lies in the bounds. + */ +Cluster.prototype.isMarkerInClusterBounds = function(marker) { + return this.bounds_.contains(marker.getPosition()); +}; + + +/** + * Returns the map that the cluster is associated with. + * + * @return {google.maps.Map} The map. + */ +Cluster.prototype.getMap = function() { + return this.map_; +}; + + +/** + * Updates the cluster icon + */ +Cluster.prototype.updateIcon = function() { + var zoom = this.map_.getZoom(); + var mz = this.markerClusterer_.getMaxZoom(); + + if (mz && zoom > mz) { + // The zoom is greater than our max zoom so show all the markers in cluster. + for (var i = 0, marker; marker = this.markers_[i]; i++) { + marker.setMap(this.map_); + } + return; + } + + if (this.markers_.length < this.minClusterSize_) { + // Min cluster size not yet reached. + this.clusterIcon_.hide(); + return; + } + + var numStyles = this.markerClusterer_.getStyles().length; + var sums = this.markerClusterer_.getCalculator()(this.markers_, numStyles); + this.clusterIcon_.setCenter(this.center_); + this.clusterIcon_.setSums(sums); + this.clusterIcon_.show(); +}; + + +/** + * A cluster icon + * + * @param {Cluster} cluster The cluster to be associated with. + * @param {Object} styles An object that has style properties: + * 'url': (string) The image url. + * 'height': (number) The image height. + * 'width': (number) The image width. + * 'anchor': (Array) The anchor position of the label text. + * 'textColor': (string) The text color. + * 'textSize': (number) The text size. + * 'backgroundPosition: (string) The background postition x, y. + * @param {number=} opt_padding Optional padding to apply to the cluster icon. + * @constructor + * @extends google.maps.OverlayView + * @ignore + */ +function ClusterIcon(cluster, styles, opt_padding) { + cluster.getMarkerClusterer().extend(ClusterIcon, google.maps.OverlayView); + + this.styles_ = styles; + this.padding_ = opt_padding || 0; + this.cluster_ = cluster; + this.center_ = null; + this.map_ = cluster.getMap(); + this.div_ = null; + this.sums_ = null; + this.visible_ = false; + + this.setMap(this.map_); +} + + +/** + * Triggers the clusterclick event and zoom's if the option is set. + * + * @param {google.maps.MouseEvent} event The event to propagate + */ +ClusterIcon.prototype.triggerClusterClick = function(event) { + var markerClusterer = this.cluster_.getMarkerClusterer(); + + // Trigger the clusterclick event. + google.maps.event.trigger(markerClusterer, 'clusterclick', this.cluster_, event); + + if (markerClusterer.isZoomOnClick()) { + // Zoom into the cluster. + this.map_.fitBounds(this.cluster_.getBounds()); + } +}; + + +/** + * Adding the cluster icon to the dom. + * @ignore + */ +ClusterIcon.prototype.onAdd = function() { + this.div_ = document.createElement('DIV'); + if (this.visible_) { + var pos = this.getPosFromLatLng_(this.center_); + this.div_.style.cssText = this.createCss(pos); + this.div_.innerHTML = this.sums_.text; + } + + var panes = this.getPanes(); + panes.overlayMouseTarget.appendChild(this.div_); + + var that = this; + var isDragging = false; + google.maps.event.addDomListener(this.div_, 'click', function(event) { + // Only perform click when not preceded by a drag + if (!isDragging) { + that.triggerClusterClick(event); + } + }); + google.maps.event.addDomListener(this.div_, 'mousedown', function() { + isDragging = false; + }); + google.maps.event.addDomListener(this.div_, 'mousemove', function() { + isDragging = true; + }); +}; + + +/** + * Returns the position to place the div dending on the latlng. + * + * @param {google.maps.LatLng} latlng The position in latlng. + * @return {google.maps.Point} The position in pixels. + * @private + */ +ClusterIcon.prototype.getPosFromLatLng_ = function(latlng) { + var pos = this.getProjection().fromLatLngToDivPixel(latlng); + + if (typeof this.iconAnchor_ === 'object' && this.iconAnchor_.length === 2) { + pos.x -= this.iconAnchor_[0]; + pos.y -= this.iconAnchor_[1]; + } else { + pos.x -= parseInt(this.width_ / 2, 10); + pos.y -= parseInt(this.height_ / 2, 10); + } + return pos; +}; + + +/** + * Draw the icon. + * @ignore + */ +ClusterIcon.prototype.draw = function() { + if (this.visible_) { + var pos = this.getPosFromLatLng_(this.center_); + this.div_.style.top = pos.y + 'px'; + this.div_.style.left = pos.x + 'px'; + } +}; + + +/** + * Hide the icon. + */ +ClusterIcon.prototype.hide = function() { + if (this.div_) { + this.div_.style.display = 'none'; + } + this.visible_ = false; +}; + + +/** + * Position and show the icon. + */ +ClusterIcon.prototype.show = function() { + if (this.div_) { + var pos = this.getPosFromLatLng_(this.center_); + this.div_.style.cssText = this.createCss(pos); + this.div_.style.display = ''; + } + this.visible_ = true; +}; + + +/** + * Remove the icon from the map + */ +ClusterIcon.prototype.remove = function() { + this.setMap(null); +}; + + +/** + * Implementation of the onRemove interface. + * @ignore + */ +ClusterIcon.prototype.onRemove = function() { + if (this.div_ && this.div_.parentNode) { + this.hide(); + this.div_.parentNode.removeChild(this.div_); + this.div_ = null; + } +}; + + +/** + * Set the sums of the icon. + * + * @param {Object} sums The sums containing: + * 'text': (string) The text to display in the icon. + * 'index': (number) The style index of the icon. + */ +ClusterIcon.prototype.setSums = function(sums) { + this.sums_ = sums; + this.text_ = sums.text; + this.index_ = sums.index; + if (this.div_) { + this.div_.innerHTML = sums.text; + } + + this.useStyle(); +}; + + +/** + * Sets the icon to the the styles. + */ +ClusterIcon.prototype.useStyle = function() { + var index = Math.max(0, this.sums_.index - 1); + index = Math.min(this.styles_.length - 1, index); + var style = this.styles_[index]; + this.url_ = style['url']; + this.height_ = style['height']; + this.width_ = style['width']; + this.textColor_ = style['textColor']; + this.anchor_ = style['anchor']; + this.textSize_ = style['textSize']; + this.backgroundPosition_ = style['backgroundPosition']; + this.iconAnchor_ = style['iconAnchor']; +}; + + +/** + * Sets the center of the icon. + * + * @param {google.maps.LatLng} center The latlng to set as the center. + */ +ClusterIcon.prototype.setCenter = function(center) { + this.center_ = center; +}; + + +/** + * Create the css text based on the position of the icon. + * + * @param {google.maps.Point} pos The position. + * @return {string} The css style text. + */ +ClusterIcon.prototype.createCss = function(pos) { + var style = []; + style.push('background-image:url(' + this.url_ + ');'); + var backgroundPosition = this.backgroundPosition_ ? this.backgroundPosition_ : '0 0'; + style.push('background-position:' + backgroundPosition + ';'); + + if (typeof this.anchor_ === 'object') { + if (typeof this.anchor_[0] === 'number' && this.anchor_[0] > 0 && + this.anchor_[0] < this.height_) { + style.push('height:' + (this.height_ - this.anchor_[0]) + + 'px; padding-top:' + this.anchor_[0] + 'px;'); + } else if (typeof this.anchor_[0] === 'number' && this.anchor_[0] < 0 && + -this.anchor_[0] < this.height_) { + style.push('height:' + this.height_ + 'px; line-height:' + (this.height_ + this.anchor_[0]) + + 'px;'); + } else { + style.push('height:' + this.height_ + 'px; line-height:' + this.height_ + + 'px;'); + } + if (typeof this.anchor_[1] === 'number' && this.anchor_[1] > 0 && + this.anchor_[1] < this.width_) { + style.push('width:' + (this.width_ - this.anchor_[1]) + + 'px; padding-left:' + this.anchor_[1] + 'px;'); + } else { + style.push('width:' + this.width_ + 'px; text-align:center;'); + } + } else { + style.push('height:' + this.height_ + 'px; line-height:' + + this.height_ + 'px; width:' + this.width_ + 'px; text-align:center;'); + } + + var txtColor = this.textColor_ ? this.textColor_ : 'black'; + var txtSize = this.textSize_ ? this.textSize_ : 11; + + style.push('cursor:pointer; top:' + pos.y + 'px; left:' + + pos.x + 'px; color:' + txtColor + '; position:absolute; font-size:' + + txtSize + 'px; font-family:Arial,sans-serif; font-weight:bold'); + return style.join(''); +}; + + +// Export Symbols for Closure +// If you are not going to compile with closure then you can remove the +// code below. +window['MarkerClusterer'] = MarkerClusterer; +MarkerClusterer.prototype['addMarker'] = MarkerClusterer.prototype.addMarker; +MarkerClusterer.prototype['addMarkers'] = MarkerClusterer.prototype.addMarkers; +MarkerClusterer.prototype['clearMarkers'] = + MarkerClusterer.prototype.clearMarkers; +MarkerClusterer.prototype['fitMapToMarkers'] = + MarkerClusterer.prototype.fitMapToMarkers; +MarkerClusterer.prototype['getCalculator'] = + MarkerClusterer.prototype.getCalculator; +MarkerClusterer.prototype['getGridSize'] = + MarkerClusterer.prototype.getGridSize; +MarkerClusterer.prototype['getExtendedBounds'] = + MarkerClusterer.prototype.getExtendedBounds; +MarkerClusterer.prototype['getMap'] = MarkerClusterer.prototype.getMap; +MarkerClusterer.prototype['getMarkers'] = MarkerClusterer.prototype.getMarkers; +MarkerClusterer.prototype['getMaxZoom'] = MarkerClusterer.prototype.getMaxZoom; +MarkerClusterer.prototype['getStyles'] = MarkerClusterer.prototype.getStyles; +MarkerClusterer.prototype['getTotalClusters'] = + MarkerClusterer.prototype.getTotalClusters; +MarkerClusterer.prototype['getTotalMarkers'] = + MarkerClusterer.prototype.getTotalMarkers; +MarkerClusterer.prototype['redraw'] = MarkerClusterer.prototype.redraw; +MarkerClusterer.prototype['removeMarker'] = + MarkerClusterer.prototype.removeMarker; +MarkerClusterer.prototype['removeMarkers'] = + MarkerClusterer.prototype.removeMarkers; +MarkerClusterer.prototype['resetViewport'] = + MarkerClusterer.prototype.resetViewport; +MarkerClusterer.prototype['repaint'] = + MarkerClusterer.prototype.repaint; +MarkerClusterer.prototype['setCalculator'] = + MarkerClusterer.prototype.setCalculator; +MarkerClusterer.prototype['setGridSize'] = + MarkerClusterer.prototype.setGridSize; +MarkerClusterer.prototype['setMaxZoom'] = + MarkerClusterer.prototype.setMaxZoom; +MarkerClusterer.prototype['onAdd'] = MarkerClusterer.prototype.onAdd; +MarkerClusterer.prototype['draw'] = MarkerClusterer.prototype.draw; + +Cluster.prototype['getCenter'] = Cluster.prototype.getCenter; +Cluster.prototype['getSize'] = Cluster.prototype.getSize; +Cluster.prototype['getMarkers'] = Cluster.prototype.getMarkers; + +ClusterIcon.prototype['onAdd'] = ClusterIcon.prototype.onAdd; +ClusterIcon.prototype['draw'] = ClusterIcon.prototype.draw; +ClusterIcon.prototype['onRemove'] = ClusterIcon.prototype.onRemove; diff --git a/test/test.html b/test/test.html new file mode 100644 index 0000000..0ceff7c --- /dev/null +++ b/test/test.html @@ -0,0 +1,108 @@ + + + + + test page + + + + + + +
+ + + +