From ed873f8df834cd9805b2552d77177ff2b83150e3 Mon Sep 17 00:00:00 2001 From: Michael Leibowitz Date: Wed, 12 Sep 2012 16:53:39 -0700 Subject: [PATCH 1/1] Initial import Signed-off-by: Michael Leibowitz --- .gitignore | 1 + LICENSE | 202 ++++ README.org | 20 + css/moute.css | 118 +++ index.html | 43 + js/jquery-1.8.0.min.js | 2 + js/moute.js | 110 +++ js/polymaps.js | 2402 ++++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 2898 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.org create mode 100644 css/moute.css create mode 100644 index.html create mode 100644 js/jquery-1.8.0.min.js create mode 100644 js/moute.js create mode 100644 js/polymaps.js diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b25c15b --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +*~ diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..c720c61 --- /dev/null +++ b/LICENSE @@ -0,0 +1,202 @@ +Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + 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. + diff --git a/README.org b/README.org new file mode 100644 index 0000000..d9c6423 --- /dev/null +++ b/README.org @@ -0,0 +1,20 @@ +Moute is a demontration of a mapping/navigitation front-end in HTML. +Author: Michael Leibowitz + +* License/Legal + This application is written using HTML5/css3/jquery javascript library and is + distributed under Apache2.0 license. + + Moute uses data from OpenStreetmap, which is licensed under the CC + BY-SA License. + +** Subcomponents +*** jQuery 1.8.0 + - Copyright 2012 jQuery Foundation and other contributors + - Released under the MIT license + - http://jquery.org/license +*** Polymaps + - Copyright (c) 2010, SimpleGeo and Stamen Design + - Released under 3-Clause BSD type License + - http://polymaps.org + diff --git a/css/moute.css b/css/moute.css new file mode 100644 index 0000000..95fb22e --- /dev/null +++ b/css/moute.css @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2012, Intel Corporation. + * + * This program is licensed under the terms and conditions of the + * Apache License, version 2.0. The full text of the Apache License is at + * http://www.apache.org/licenses/LICENSE-2.0 + * + */ + +html, body { + height: 100%; +} + +.hidden { + visibility: hidden; +} + +#map { + height: 95%; +} + +#state_lable { + color: #FFFFFF; + text-align: center +} + +header { + background: #000000; + height: 5%; +} + +#searchbar { + width: 100%; +} + +input[type=text] { + width: 70%; +} + +input[type=button] { + width: 15%; +} + + +footer { + background: #802828; + display:-webkit-box; + height: 10%; + -webkit-box-orient:horizontal; + -webkit-box-pack:center; + -webkit-box-align:center; +} + +body { + margin: 0; + background: #E5E0D9; +} + +svg { + display: block; + overflow: hidden; + width: 100%; + height: 100%; +} + +#copy { + position: absolute; + left: 0; + bottom: 4px; + padding-left: 5px; + font: 9px sans-serif; + color: #fff; + cursor: default; +} + +#copy a { + color: #fff; +} + +.compass .back { + fill: #eee; + fill-opacity: .8; +} + +.compass .fore { + stroke: #999; + stroke-width: 1.5px; +} + +.compass rect.back.fore { + fill: #999; + fill-opacity: .3; + stroke: #eee; + stroke-width: 1px; + shape-rendering: crispEdges; +} + +.compass .direction { + fill: none; +} + +.compass .chevron { + fill: none; + stroke: #999; + stroke-width: 5px; +} + +.compass .zoom .chevron { + stroke-width: 4px; +} + +.compass .active .chevron, .compass .chevron.active { + stroke: #fff; +} + +.compass.active .active .direction { + fill: #999; +} diff --git a/index.html b/index.html new file mode 100644 index 0000000..f5926ab --- /dev/null +++ b/index.html @@ -0,0 +1,43 @@ + + + + + Moute + + + + + + +
+
+ +
+
+
+

Not Navigating

+ +
+ time:CURRENT TIME +
+ +
+

Arrival

+

ARRIVAL TIME

+
+ +
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The full text of the Apache License is at + * http://www.apache.org/licenses/LICENSE-2.0 + * + */ + +stateEnum = { + NOT_NAVIGATING : 0, + NAVIGATING : 1, + ARRIVED: 2 +}; + +state = stateEnum.NOT_NAVIGATING; + + +function Searcher() +{ + this.extents_to_viewbox = function() { + var extents = map.extent(); + return extents[0].lon //left + + "," + extents[1].lat //top + + "," + extents[1].lon //right + + "," + extents[0].lat //bottom + ; + }; + + this.search = function(searchphrase) { + $.ajax({ + url: 'http://nominatim.openstreetmap.org/search', + type: 'GET', + dataType: 'jsonp', + jsonp: false, + jsonpCallback: 'json_callback' + escape(searchphrase), + data: { + format: 'json', + bounded: 1, + viewbox: this.extents_to_viewbox(), + json_callback: 'json_callback' + searchphrase, + q: searchphrase + }, + success: function(data, textStatus, xhr) { + geojson = data.map(function(o) { + return { + type : "Feature", + geometry: { + type : "Point", + coordinates : [ + Number(o.lon), + Number(o.lat) + ]}, + properties: { + icon : o.icon + } + }; + }); + geojson_layer.features(geojson); + } + }); + }; +} + +jQuery(document).ready(function() { + //set up the footer + //FIXME: do this on resize and do something smarter + var height = $("body").height(); + var width = $("body").width(); + + console.log("display ratio: " + width / height); + + var footer_height = height * 0.10; + // $("footer").height(footer_height); + // $("#map").height(height - footer_height); + + console.log("screen height: " + height); + console.log("footer height: " + footer_height); + + // set up the map + var po = org.polymaps; + geojson = []; + map = po.map() + .container(document.getElementById("map").appendChild(po.svg("svg"))) + .add(po.interact()); + + map.add(po.image() + .url(po.url("http://{S}tile.openstreetmap.org/{Z}/{X}/{Y}.png") + .hosts(["a.", "b.", "c.", ""]))); + map.add(po.compass() + .pan("none")); + geojson_layer = po.geoJson(); + geojson_layer.features(geojson); + geojson_layer.on("show", po.stylist()); + map.add(geojson_layer); + + // set up the labels + $("#state_lable").hide(); + time = $("#time").hide().detach(); + arrival_time = $("#arrival_time").hide().detach(); + + s = new Searcher(); + $(":button").on("click", function(e) { + var searchtext = $("input[type='text']").val(); + if (searchtext) { + s.search(searchtext); + } + } ); + +}); diff --git a/js/polymaps.js b/js/polymaps.js new file mode 100644 index 0000000..9dc2c70 --- /dev/null +++ b/js/polymaps.js @@ -0,0 +1,2402 @@ +if (!org) var org = {}; +if (!org.polymaps) org.polymaps = {}; +(function(po){ + + po.version = "2.5.0"; // semver.org + + var zero = {x: 0, y: 0}; +po.ns = { + svg: "http://www.w3.org/2000/svg", + xlink: "http://www.w3.org/1999/xlink" +}; + +function ns(name) { + var i = name.indexOf(":"); + return i < 0 ? name : { + space: po.ns[name.substring(0, i)], + local: name.substring(i + 1) + }; +} +po.id = (function() { + var id = 0; + return function() { + return ++id; + }; +})(); +po.svg = function(type) { + return document.createElementNS(po.ns.svg, type); +}; +po.transform = function(a, b, c, d, e, f) { + var transform = {}, + zoomDelta, + zoomFraction, + k; + + if (!arguments.length) { + a = 1; c = 0; e = 0; + b = 0; d = 1; f = 0; + } + + transform.zoomFraction = function(x) { + if (!arguments.length) return zoomFraction; + zoomFraction = x; + zoomDelta = Math.floor(zoomFraction + Math.log(Math.sqrt(a * a + b * b + c * c + d * d)) / Math.LN2); + k = Math.pow(2, -zoomDelta); + return transform; + }; + + transform.apply = function(x) { + var k0 = Math.pow(2, -x.zoom), + k1 = Math.pow(2, x.zoom - zoomDelta); + return { + column: (a * x.column * k0 + c * x.row * k0 + e) * k1, + row: (b * x.column * k0 + d * x.row * k0 + f) * k1, + zoom: x.zoom - zoomDelta + }; + }; + + transform.unapply = function(x) { + var k0 = Math.pow(2, -x.zoom), + k1 = Math.pow(2, x.zoom + zoomDelta); + return { + column: (x.column * k0 * d - x.row * k0 * c - e * d + f * c) / (a * d - b * c) * k1, + row: (x.column * k0 * b - x.row * k0 * a - e * b + f * a) / (c * b - d * a) * k1, + zoom: x.zoom + zoomDelta + }; + }; + + transform.toString = function() { + return "matrix(" + [a * k, b * k, c * k, d * k].join(" ") + " 0 0)"; + }; + + return transform.zoomFraction(0); +}; +po.cache = function(load, unload) { + var cache = {}, + locks = {}, + map = {}, + head = null, + tail = null, + size = 64, + n = 0; + + function remove(tile) { + n--; + if (unload) unload(tile); + delete map[tile.key]; + if (tile.next) tile.next.prev = tile.prev; + else if (tail = tile.prev) tail.next = null; + if (tile.prev) tile.prev.next = tile.next; + else if (head = tile.next) head.prev = null; + } + + function flush() { + for (var tile = tail; n > size; tile = tile.prev) { + if (!tile) break; + if (tile.lock) continue; + remove(tile); + } + } + + cache.peek = function(c) { + return map[[c.zoom, c.column, c.row].join("/")]; + }; + + cache.load = function(c, projection) { + var key = [c.zoom, c.column, c.row].join("/"), + tile = map[key]; + if (tile) { + if (tile.prev) { + tile.prev.next = tile.next; + if (tile.next) tile.next.prev = tile.prev; + else tail = tile.prev; + tile.prev = null; + tile.next = head; + head.prev = tile; + head = tile; + } + tile.lock = 1; + locks[key] = tile; + return tile; + } + tile = { + key: key, + column: c.column, + row: c.row, + zoom: c.zoom, + next: head, + prev: null, + lock: 1 + }; + load.call(null, tile, projection); + locks[key] = map[key] = tile; + if (head) head.prev = tile; + else tail = tile; + head = tile; + n++; + return tile; + }; + + cache.unload = function(key) { + if (!(key in locks)) return false; + var tile = locks[key]; + tile.lock = 0; + delete locks[key]; + if (tile.request && tile.request.abort(false)) remove(tile); + return tile; + }; + + cache.locks = function() { + return locks; + }; + + cache.size = function(x) { + if (!arguments.length) return size; + size = x; + flush(); + return cache; + }; + + cache.flush = function() { + flush(); + return cache; + }; + + cache.clear = function() { + for (var key in map) { + var tile = map[key]; + if (tile.request) tile.request.abort(false); + if (unload) unload(map[key]); + if (tile.lock) { + tile.lock = 0; + tile.element.parentNode.removeChild(tile.element); + } + } + locks = {}; + map = {}; + head = tail = null; + n = 0; + return cache; + }; + + return cache; +}; +po.url = function(template) { + var hosts = [], + repeat = true; + + function format(c) { + var max = c.zoom < 0 ? 1 : 1 << c.zoom, + column = c.column; + if (repeat) { + column = c.column % max; + if (column < 0) column += max; + } else if ((column < 0) || (column >= max)) { + return null; + } + return template.replace(/{(.)}/g, function(s, v) { + switch (v) { + case "S": return hosts[(Math.abs(c.zoom) + c.row + column) % hosts.length]; + case "Z": return c.zoom; + case "X": return column; + case "Y": return c.row; + case "B": { + var nw = po.map.coordinateLocation({row: c.row, column: column, zoom: c.zoom}), + se = po.map.coordinateLocation({row: c.row + 1, column: column + 1, zoom: c.zoom}), + pn = Math.ceil(Math.log(c.zoom) / Math.LN2); + return se.lat.toFixed(pn) + + "," + nw.lon.toFixed(pn) + + "," + nw.lat.toFixed(pn) + + "," + se.lon.toFixed(pn); + } + } + return v; + }); + } + + format.template = function(x) { + if (!arguments.length) return template; + template = x; + return format; + }; + + format.hosts = function(x) { + if (!arguments.length) return hosts; + hosts = x; + return format; + }; + + format.repeat = function(x) { + if (!arguments.length) return repeat; + repeat = x; + return format; + }; + + return format; +}; +po.dispatch = function(that) { + var types = {}; + + that.on = function(type, handler) { + var listeners = types[type] || (types[type] = []); + for (var i = 0; i < listeners.length; i++) { + if (listeners[i].handler == handler) return that; // already registered + } + listeners.push({handler: handler, on: true}); + return that; + }; + + that.off = function(type, handler) { + var listeners = types[type]; + if (listeners) for (var i = 0; i < listeners.length; i++) { + var l = listeners[i]; + if (l.handler == handler) { + l.on = false; + listeners.splice(i, 1); + break; + } + } + return that; + }; + + return function(event) { + var listeners = types[event.type]; + if (!listeners) return; + listeners = listeners.slice(); // defensive copy + for (var i = 0; i < listeners.length; i++) { + var l = listeners[i]; + if (l.on) l.handler.call(that, event); + } + }; +}; +po.queue = (function() { + var queued = [], active = 0, size = 6; + + function process() { + if ((active >= size) || !queued.length) return; + active++; + queued.pop()(); + } + + function dequeue(send) { + for (var i = 0; i < queued.length; i++) { + if (queued[i] == send) { + queued.splice(i, 1); + return true; + } + } + return false; + } + + function request(url, callback, mimeType) { + var req; + + function send() { + req = new XMLHttpRequest(); + if (mimeType) { + req.overrideMimeType(mimeType); + } + req.open("GET", url, true); + req.onreadystatechange = function(e) { + if (req.readyState == 4) { + active--; + if (req.status < 300) callback(req); + process(); + } + }; + req.send(null); + } + + function abort(hard) { + if (dequeue(send)) return true; + if (hard && req) { req.abort(); return true; } + return false; + } + + queued.push(send); + process(); + return {abort: abort}; + } + + function text(url, callback, mimeType) { + return request(url, function(req) { + if (req.responseText) callback(req.responseText); + }, mimeType); + } + + /* + * We the override MIME type here so that you can load local files; some + * browsers don't assign a proper MIME type for local files. + */ + + function json(url, callback) { + return request(url, function(req) { + if (req.responseText) callback(JSON.parse(req.responseText)); + }, "application/json"); + } + + function xml(url, callback) { + return request(url, function(req) { + if (req.responseXML) callback(req.responseXML); + }, "application/xml"); + } + + function image(image, src, callback) { + var img; + + function send() { + img = document.createElement("img"); + img.onerror = function() { + active--; + process(); + }; + img.onload = function() { + active--; + callback(img); + process(); + }; + img.src = src; + image.setAttributeNS(po.ns.xlink, "href", src); + } + + function abort(hard) { + if (dequeue(send)) return true; + if (hard && img) { img.src = "about:"; return true; } // cancels request + return false; + } + + queued.push(send); + process(); + return {abort: abort}; + } + + return {text: text, xml: xml, json: json, image: image}; +})(); +po.map = function() { + var map = {}, + container, + size, + sizeActual = zero, + sizeRadius = zero, // sizeActual / 2 + tileSize = {x: 256, y: 256}, + center = {lat: 37.76487, lon: -122.41948}, + zoom = 12, + zoomFraction = 0, + zoomFactor = 1, // Math.pow(2, zoomFraction) + zoomRange = [1, 18], + angle = 0, + angleCos = 1, // Math.cos(angle) + angleSin = 0, // Math.sin(angle) + angleCosi = 1, // Math.cos(-angle) + angleSini = 0, // Math.sin(-angle) + ymin = -180, // lat2y(centerRange[0].lat) + ymax = 180; // lat2y(centerRange[1].lat) + + var centerRange = [ + {lat: y2lat(ymin), lon: -Infinity}, + {lat: y2lat(ymax), lon: Infinity} + ]; + + map.locationCoordinate = function(l) { + var c = po.map.locationCoordinate(l), + k = Math.pow(2, zoom); + c.column *= k; + c.row *= k; + c.zoom += zoom; + return c; + }; + + map.coordinateLocation = po.map.coordinateLocation; + + map.coordinatePoint = function(tileCenter, c) { + var kc = Math.pow(2, zoom - c.zoom), + kt = Math.pow(2, zoom - tileCenter.zoom), + dx = (c.column * kc - tileCenter.column * kt) * tileSize.x * zoomFactor, + dy = (c.row * kc - tileCenter.row * kt) * tileSize.y * zoomFactor; + return { + x: sizeRadius.x + angleCos * dx - angleSin * dy, + y: sizeRadius.y + angleSin * dx + angleCos * dy + }; + }; + + map.pointCoordinate = function(tileCenter, p) { + var kt = Math.pow(2, zoom - tileCenter.zoom), + dx = (p.x - sizeRadius.x) / zoomFactor, + dy = (p.y - sizeRadius.y) / zoomFactor; + return { + column: tileCenter.column * kt + (angleCosi * dx - angleSini * dy) / tileSize.x, + row: tileCenter.row * kt + (angleSini * dx + angleCosi * dy) / tileSize.y, + zoom: zoom + }; + }; + + map.locationPoint = function(l) { + var k = Math.pow(2, zoom + zoomFraction - 3) / 45, + dx = (l.lon - center.lon) * k * tileSize.x, + dy = (lat2y(center.lat) - lat2y(l.lat)) * k * tileSize.y; + return { + x: sizeRadius.x + angleCos * dx - angleSin * dy, + y: sizeRadius.y + angleSin * dx + angleCos * dy + }; + }; + + map.pointLocation = function(p) { + var k = 45 / Math.pow(2, zoom + zoomFraction - 3), + dx = (p.x - sizeRadius.x) * k, + dy = (p.y - sizeRadius.y) * k; + return { + lon: center.lon + (angleCosi * dx - angleSini * dy) / tileSize.x, + lat: y2lat(lat2y(center.lat) - (angleSini * dx + angleCosi * dy) / tileSize.y) + }; + }; + + function rezoom() { + if (zoomRange) { + if (zoom < zoomRange[0]) zoom = zoomRange[0]; + else if (zoom > zoomRange[1]) zoom = zoomRange[1]; + } + zoomFraction = zoom - (zoom = Math.round(zoom)); + zoomFactor = Math.pow(2, zoomFraction); + } + + function recenter() { + if (!centerRange) return; + var k = 45 / Math.pow(2, zoom + zoomFraction - 3); + + // constrain latitude + var y = Math.max(Math.abs(angleSin * sizeRadius.x + angleCos * sizeRadius.y), + Math.abs(angleSini * sizeRadius.x + angleCosi * sizeRadius.y)), + lat0 = y2lat(ymin - y * k / tileSize.y), + lat1 = y2lat(ymax + y * k / tileSize.y); + center.lat = Math.max(lat0, Math.min(lat1, center.lat)); + + // constrain longitude + var x = Math.max(Math.abs(angleSin * sizeRadius.y + angleCos * sizeRadius.x), + Math.abs(angleSini * sizeRadius.y + angleCosi * sizeRadius.x)), + lon0 = centerRange[0].lon - x * k / tileSize.x, + lon1 = centerRange[1].lon + x * k / tileSize.x; + center.lon = Math.max(lon0, Math.min(lon1, center.lon)); + } + + // a place to capture mouse events if no tiles exist + var rect = po.svg("rect"); + rect.setAttribute("visibility", "hidden"); + rect.setAttribute("pointer-events", "all"); + + map.container = function(x) { + if (!arguments.length) return container; + container = x; + container.setAttribute("class", "map"); + container.appendChild(rect); + return map.resize(); // infer size + }; + + map.focusableParent = function() { + for (var p = container; p; p = p.parentNode) { + if (p.tabIndex >= 0) return p; + } + return window; + }; + + map.mouse = function(e) { + var point = (container.ownerSVGElement || container).createSVGPoint(); + if ((bug44083 < 0) && (window.scrollX || window.scrollY)) { + var svg = document.body.appendChild(po.svg("svg")); + svg.style.position = "absolute"; + svg.style.top = svg.style.left = "0px"; + var ctm = svg.getScreenCTM(); + bug44083 = !(ctm.f || ctm.e); + document.body.removeChild(svg); + } + if (bug44083) { + point.x = e.pageX; + point.y = e.pageY; + } else { + point.x = e.clientX; + point.y = e.clientY; + } + return point.matrixTransform(container.getScreenCTM().inverse()); + }; + + map.size = function(x) { + if (!arguments.length) return sizeActual; + size = x; + return map.resize(); // size tiles + }; + + map.resize = function() { + if (!size) { + rect.setAttribute("width", "100%"); + rect.setAttribute("height", "100%"); + b = rect.getBBox(); + sizeActual = {x: b.width, y: b.height}; + resizer.add(map); + } else { + sizeActual = size; + resizer.remove(map); + } + rect.setAttribute("width", sizeActual.x); + rect.setAttribute("height", sizeActual.y); + sizeRadius = {x: sizeActual.x / 2, y: sizeActual.y / 2}; + recenter(); + map.dispatch({type: "resize"}); + return map; + }; + + map.tileSize = function(x) { + if (!arguments.length) return tileSize; + tileSize = x; + map.dispatch({type: "move"}); + return map; + }; + + map.center = function(x) { + if (!arguments.length) return center; + center = x; + recenter(); + map.dispatch({type: "move"}); + return map; + }; + + map.panBy = function(x) { + var k = 45 / Math.pow(2, zoom + zoomFraction - 3), + dx = x.x * k, + dy = x.y * k; + return map.center({ + lon: center.lon + (angleSini * dy - angleCosi * dx) / tileSize.x, + lat: y2lat(lat2y(center.lat) + (angleSini * dx + angleCosi * dy) / tileSize.y) + }); + }; + + map.centerRange = function(x) { + if (!arguments.length) return centerRange; + centerRange = x; + if (centerRange) { + ymin = centerRange[0].lat > -90 ? lat2y(centerRange[0].lat) : -Infinity; + ymax = centerRange[0].lat < 90 ? lat2y(centerRange[1].lat) : Infinity; + } else { + ymin = -Infinity; + ymax = Infinity; + } + recenter(); + map.dispatch({type: "move"}); + return map; + }; + + map.zoom = function(x) { + if (!arguments.length) return zoom + zoomFraction; + zoom = x; + rezoom(); + return map.center(center); + }; + + map.zoomBy = function(z, x0, l) { + if (arguments.length < 2) return map.zoom(zoom + zoomFraction + z); + + // compute the location of x0 + if (arguments.length < 3) l = map.pointLocation(x0); + + // update the zoom level + zoom = zoom + zoomFraction + z; + rezoom(); + + // compute the new point of the location + var x1 = map.locationPoint(l); + + return map.panBy({x: x0.x - x1.x, y: x0.y - x1.y}); + }; + + map.zoomRange = function(x) { + if (!arguments.length) return zoomRange; + zoomRange = x; + return map.zoom(zoom + zoomFraction); + }; + + map.extent = function(x) { + if (!arguments.length) return [ + map.pointLocation({x: 0, y: sizeActual.y}), + map.pointLocation({x: sizeActual.x, y: 0}) + ]; + + // compute the extent in points, scale factor, and center + var bl = map.locationPoint(x[0]), + tr = map.locationPoint(x[1]), + k = Math.max((tr.x - bl.x) / sizeActual.x, (bl.y - tr.y) / sizeActual.y), + l = map.pointLocation({x: (bl.x + tr.x) / 2, y: (bl.y + tr.y) / 2}); + + // update the zoom level + zoom = zoom + zoomFraction - Math.log(k) / Math.LN2; + rezoom(); + + // set the new center + return map.center(l); + }; + + map.angle = function(x) { + if (!arguments.length) return angle; + angle = x; + angleCos = Math.cos(angle); + angleSin = Math.sin(angle); + angleCosi = Math.cos(-angle); + angleSini = Math.sin(-angle); + recenter(); + map.dispatch({type: "move"}); + return map; + }; + + map.add = function(x) { + x.map(map); + return map; + }; + + map.remove = function(x) { + x.map(null); + return map; + }; + + map.dispatch = po.dispatch(map); + + return map; +}; + +function resizer(e) { + for (var i = 0; i < resizer.maps.length; i++) { + resizer.maps[i].resize(); + } +} + +resizer.maps = []; + +resizer.add = function(map) { + for (var i = 0; i < resizer.maps.length; i++) { + if (resizer.maps[i] == map) return; + } + resizer.maps.push(map); +}; + +resizer.remove = function(map) { + for (var i = 0; i < resizer.maps.length; i++) { + if (resizer.maps[i] == map) { + resizer.maps.splice(i, 1); + return; + } + } +}; + +// Note: assumes single window (no frames, iframes, etc.)! +window.addEventListener("resize", resizer, false); +window.addEventListener("load", resizer, false); + +// See http://wiki.openstreetmap.org/wiki/Mercator + +function y2lat(y) { + return 360 / Math.PI * Math.atan(Math.exp(y * Math.PI / 180)) - 90; +} + +function lat2y(lat) { + return 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360)); +} + +po.map.locationCoordinate = function(l) { + var k = 1 / 360; + return { + column: (l.lon + 180) * k, + row: (180 - lat2y(l.lat)) * k, + zoom: 0 + }; +}; + +po.map.coordinateLocation = function(c) { + var k = 45 / Math.pow(2, c.zoom - 3); + return { + lon: k * c.column - 180, + lat: y2lat(180 - k * c.row) + }; +}; + +// https://bugs.webkit.org/show_bug.cgi?id=44083 +var bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0; +po.layer = function(load, unload) { + var layer = {}, + cache = layer.cache = po.cache(load, unload).size(512), + tile = true, + visible = true, + zoom, + id, + map, + container = po.svg("g"), + transform, + levelZoom, + levels = {}; + + container.setAttribute("class", "layer"); + for (var i = -4; i <= -1; i++) levels[i] = container.appendChild(po.svg("g")); + for (var i = 2; i >= 1; i--) levels[i] = container.appendChild(po.svg("g")); + levels[0] = container.appendChild(po.svg("g")); + + function zoomIn(z) { + var end = levels[0].nextSibling; + for (; levelZoom < z; levelZoom++) { + // -4, -3, -2, -1, +2, +1, =0 // current order + // -3, -2, -1, +2, +1, =0, -4 // insertBefore(-4, end) + // -3, -2, -1, +1, =0, -4, +2 // insertBefore(+2, end) + // -3, -2, -1, =0, -4, +2, +1 // insertBefore(+1, end) + // -4, -3, -2, -1, +2, +1, =0 // relabel + container.insertBefore(levels[-4], end); + container.insertBefore(levels[2], end); + container.insertBefore(levels[1], end); + var t = levels[-4]; + for (var dz = -4; dz < 2;) levels[dz] = levels[++dz]; + levels[dz] = t; + } + } + + function zoomOut(z) { + var end = levels[0].nextSibling; + for (; levelZoom > z; levelZoom--) { + // -4, -3, -2, -1, +2, +1, =0 // current order + // -4, -3, -2, +2, +1, =0, -1 // insertBefore(-1, end) + // +2, -4, -3, -2, +1, =0, -1 // insertBefore(+2, -4) + // -4, -3, -2, -1, +2, +1, =0 // relabel + container.insertBefore(levels[-1], end); + container.insertBefore(levels[2], levels[-4]); + var t = levels[2]; + for (var dz = 2; dz > -4;) levels[dz] = levels[--dz]; + levels[dz] = t; + } + } + + function move() { + var map = layer.map(), // in case the layer is removed + mapZoom = map.zoom(), + mapZoomFraction = mapZoom - (mapZoom = Math.round(mapZoom)), + mapSize = map.size(), + mapAngle = map.angle(), + tileSize = map.tileSize(), + tileCenter = map.locationCoordinate(map.center()); + + // set the layer zoom levels + if (levelZoom != mapZoom) { + if (levelZoom < mapZoom) zoomIn(mapZoom); + else if (levelZoom > mapZoom) zoomOut(mapZoom); + else levelZoom = mapZoom; + for (var z = -4; z <= 2; z++) { + var l = levels[z]; + l.setAttribute("class", "zoom" + (z < 0 ? "" : "+") + z + " zoom" + (mapZoom + z)); + l.setAttribute("transform", "scale(" + Math.pow(2, -z) + ")"); + } + } + + // set the layer transform + container.setAttribute("transform", + "translate(" + (mapSize.x / 2) + "," + (mapSize.y / 2) + ")" + + (mapAngle ? "rotate(" + mapAngle / Math.PI * 180 + ")" : "") + + (mapZoomFraction ? "scale(" + Math.pow(2, mapZoomFraction) + ")" : "") + + (transform ? transform.zoomFraction(mapZoomFraction) : "")); + + // get the coordinates of the four corners + var c0 = map.pointCoordinate(tileCenter, zero), + c1 = map.pointCoordinate(tileCenter, {x: mapSize.x, y: 0}), + c2 = map.pointCoordinate(tileCenter, mapSize), + c3 = map.pointCoordinate(tileCenter, {x: 0, y: mapSize.y}); + + // round to pixel boundary to avoid anti-aliasing artifacts + if (!mapZoomFraction && !mapAngle && !transform) { + tileCenter.column = (Math.round(tileSize.x * tileCenter.column) + (mapSize.x & 1) / 2) / tileSize.x; + tileCenter.row = (Math.round(tileSize.y * tileCenter.row) + (mapSize.y & 1) / 2) / tileSize.y; + } + + // layer-specific coordinate transform + if (transform) { + c0 = transform.unapply(c0); + c1 = transform.unapply(c1); + c2 = transform.unapply(c2); + c3 = transform.unapply(c3); + tileCenter = transform.unapply(tileCenter); + } + + // layer-specific zoom transform + var tileLevel = zoom ? zoom(c0.zoom) - c0.zoom : 0; + if (tileLevel) { + var k = Math.pow(2, tileLevel); + c0.column *= k; c0.row *= k; + c1.column *= k; c1.row *= k; + c2.column *= k; c2.row *= k; + c3.column *= k; c3.row *= k; + c0.zoom = c1.zoom = c2.zoom = c3.zoom += tileLevel; + } + + // tile-specific projection + function projection(c) { + var zoom = c.zoom, + max = zoom < 0 ? 1 : 1 << zoom, + column = c.column % max, + row = c.row; + if (column < 0) column += max; + return { + locationPoint: function(l) { + var c = po.map.locationCoordinate(l), + k = Math.pow(2, zoom - c.zoom); + return { + x: tileSize.x * (k * c.column - column), + y: tileSize.y * (k * c.row - row) + }; + } + }; + } + + // record which tiles are visible + var oldLocks = cache.locks(), newLocks = {}; + + // reset the proxy counts + for (var key in oldLocks) { + oldLocks[key].proxyCount = 0; + } + + // load the tiles! + if (visible && tileLevel > -5 && tileLevel < 3) { + var ymax = c0.zoom < 0 ? 1 : 1 << c0.zoom; + if (tile) { + scanTriangle(c0, c1, c2, 0, ymax, scanLine); + scanTriangle(c2, c3, c0, 0, ymax, scanLine); + } else { + var x = Math.floor((c0.column + c2.column) / 2), + y = Math.max(0, Math.min(ymax - 1, Math.floor((c1.row + c3.row) / 2))), + z = Math.min(4, c0.zoom); + x = x >> z << z; + y = y >> z << z; + scanLine(x, x + 1, y); + } + } + + // scan-line conversion + function scanLine(x0, x1, y) { + var z = c0.zoom, + z0 = 2 - tileLevel, + z1 = 4 + tileLevel; + + for (var x = x0; x < x1; x++) { + var t = cache.load({column: x, row: y, zoom: z}, projection); + if (!t.ready && !(t.key in newLocks)) { + t.proxyRefs = {}; + var c, full, proxy; + + // downsample high-resolution tiles + for (var dz = 1; dz <= z0; dz++) { + full = true; + for (var dy = 0, k = 1 << dz; dy <= k; dy++) { + for (var dx = 0; dx <= k; dx++) { + proxy = cache.peek(c = { + column: (x << dz) + dx, + row: (y << dz) + dy, + zoom: z + dz + }); + if (proxy && proxy.ready) { + newLocks[proxy.key] = cache.load(c); + proxy.proxyCount++; + t.proxyRefs[proxy.key] = proxy; + } else { + full = false; + } + } + } + if (full) break; + } + + // upsample low-resolution tiles + if (!full) { + for (var dz = 1; dz <= z1; dz++) { + proxy = cache.peek(c = { + column: x >> dz, + row: y >> dz, + zoom: z - dz + }); + if (proxy && proxy.ready) { + newLocks[proxy.key] = cache.load(c); + proxy.proxyCount++; + t.proxyRefs[proxy.key] = proxy; + break; + } + } + } + } + newLocks[t.key] = t; + } + } + + // position tiles + for (var key in newLocks) { + var t = newLocks[key], + k = Math.pow(2, t.level = t.zoom - tileCenter.zoom); + t.element.setAttribute("transform", "translate(" + + (t.x = tileSize.x * (t.column - tileCenter.column * k)) + "," + + (t.y = tileSize.y * (t.row - tileCenter.row * k)) + ")"); + } + + // remove tiles that are no longer visible + for (var key in oldLocks) { + if (!(key in newLocks)) { + var t = cache.unload(key); + t.element.parentNode.removeChild(t.element); + delete t.proxyRefs; + } + } + + // append tiles that are now visible + for (var key in newLocks) { + var t = newLocks[key]; + if (t.element.parentNode != levels[t.level]) { + levels[t.level].appendChild(t.element); + if (layer.show) layer.show(t); + } + } + + // flush the cache, clearing no-longer-needed tiles + cache.flush(); + + // dispatch the move event + layer.dispatch({type: "move"}); + } + + // remove proxy tiles when tiles load + function cleanup(e) { + if (e.tile.proxyRefs) { + for (var proxyKey in e.tile.proxyRefs) { + var proxyTile = e.tile.proxyRefs[proxyKey]; + if ((--proxyTile.proxyCount <= 0) && cache.unload(proxyKey)) { + proxyTile.element.parentNode.removeChild(proxyTile.element); + } + } + delete e.tile.proxyRefs; + } + } + + layer.map = function(x) { + if (!arguments.length) return map; + if (map) { + if (map == x) { + container.parentNode.appendChild(container); // move to end + return layer; + } + map.off("move", move).off("resize", move); + container.parentNode.removeChild(container); + } + map = x; + if (map) { + map.container().appendChild(container); + if (layer.init) layer.init(container); + map.on("move", move).on("resize", move); + move(); + } + return layer; + }; + + layer.container = function() { + return container; + }; + + layer.levels = function() { + return levels; + }; + + layer.id = function(x) { + if (!arguments.length) return id; + id = x; + container.setAttribute("id", x); + return layer; + }; + + layer.visible = function(x) { + if (!arguments.length) return visible; + if (visible = x) container.removeAttribute("visibility") + else container.setAttribute("visibility", "hidden"); + if (map) move(); + return layer; + }; + + layer.transform = function(x) { + if (!arguments.length) return transform; + transform = x; + if (map) move(); + return layer; + }; + + layer.zoom = function(x) { + if (!arguments.length) return zoom; + zoom = typeof x == "function" || x == null ? x : function() { return x; }; + if (map) move(); + return layer; + }; + + layer.tile = function(x) { + if (!arguments.length) return tile; + tile = x; + if (map) move(); + return layer; + }; + + layer.reload = function() { + cache.clear(); + if (map) move(); + return layer; + }; + + layer.dispatch = po.dispatch(layer); + layer.on("load", cleanup); + + return layer; +}; + +// scan-line conversion +function edge(a, b) { + if (a.row > b.row) { var t = a; a = b; b = t; } + return { + x0: a.column, + y0: a.row, + x1: b.column, + y1: b.row, + dx: b.column - a.column, + dy: b.row - a.row + }; +} + +// scan-line conversion +function scanSpans(e0, e1, ymin, ymax, scanLine) { + var y0 = Math.max(ymin, Math.floor(e1.y0)), + y1 = Math.min(ymax, Math.ceil(e1.y1)); + + // sort edges by x-coordinate + if ((e0.x0 == e1.x0 && e0.y0 == e1.y0) + ? (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) + : (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) { + var t = e0; e0 = e1; e1 = t; + } + + // scan lines! + var m0 = e0.dx / e0.dy, + m1 = e1.dx / e1.dy, + d0 = e0.dx > 0, // use y + 1 to compute x0 + d1 = e1.dx < 0; // use y + 1 to compute x1 + for (var y = y0; y < y1; y++) { + var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0, + x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0; + scanLine(Math.floor(x1), Math.ceil(x0), y); + } +} + +// scan-line conversion +function scanTriangle(a, b, c, ymin, ymax, scanLine) { + var ab = edge(a, b), + bc = edge(b, c), + ca = edge(c, a); + + // sort edges by y-length + if (ab.dy > bc.dy) { var t = ab; ab = bc; bc = t; } + if (ab.dy > ca.dy) { var t = ab; ab = ca; ca = t; } + if (bc.dy > ca.dy) { var t = bc; bc = ca; ca = t; } + + // scan span! scan span! + if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine); + if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine); +} +po.image = function() { + var image = po.layer(load, unload), + url; + + function load(tile) { + var element = tile.element = po.svg("image"), size = image.map().tileSize(); + element.setAttribute("preserveAspectRatio", "none"); + element.setAttribute("width", size.x); + element.setAttribute("height", size.y); + + if (typeof url == "function") { + element.setAttribute("opacity", 0); + var tileUrl = url(tile); + if (tileUrl != null) { + tile.request = po.queue.image(element, tileUrl, function(img) { + delete tile.request; + tile.ready = true; + tile.img = img; + element.removeAttribute("opacity"); + image.dispatch({type: "load", tile: tile}); + }); + } else { + tile.ready = true; + image.dispatch({type: "load", tile: tile}); + } + } else { + tile.ready = true; + if (url != null) element.setAttributeNS(po.ns.xlink, "href", url); + image.dispatch({type: "load", tile: tile}); + } + } + + function unload(tile) { + if (tile.request) tile.request.abort(true); + } + + image.url = function(x) { + if (!arguments.length) return url; + url = typeof x == "string" && /{.}/.test(x) ? po.url(x) : x; + return image.reload(); + }; + + return image; +}; +po.geoJson = function(fetch) { + var geoJson = po.layer(load, unload), + container = geoJson.container(), + url, + clip = true, + clipId = "org.polymaps." + po.id(), + clipHref = "url(#" + clipId + ")", + clipPath = container.insertBefore(po.svg("clipPath"), container.firstChild), + clipRect = clipPath.appendChild(po.svg("rect")), + scale = "auto", + zoom = null, + features; + + container.setAttribute("fill-rule", "evenodd"); + clipPath.setAttribute("id", clipId); + + if (!arguments.length) fetch = po.queue.json; + + function projection(proj) { + var l = {lat: 0, lon: 0}; + return function(coordinates) { + l.lat = coordinates[1]; + l.lon = coordinates[0]; + var p = proj(l); + coordinates.x = p.x; + coordinates.y = p.y; + return p; + }; + } + + function geometry(o, proj) { + return o && o.type in types && types[o.type](o, proj); + } + + var types = { + + Point: function(o, proj) { + var p = proj(o.coordinates), + c = po.svg("circle"); + c.setAttribute("r", 4.5); + c.setAttribute("transform", "translate(" + p.x + "," + p.y + ")"); + return c; + }, + + MultiPoint: function(o, proj) { + var g = po.svg("g"), + c = o.coordinates, + p, // proj(c[i]) + x, // svg:circle + i = -1, + n = c.length; + while (++i < n) { + x = g.appendChild(po.svg("circle")); + x.setAttribute("r", 4.5); + x.setAttribute("transform", "translate(" + (p = proj(c[i])).x + "," + p.y + ")"); + } + return g; + }, + + LineString: function(o, proj) { + var x = po.svg("path"), + d = ["M"], + c = o.coordinates, + p, // proj(c[i]) + i = -1, + n = c.length; + while (++i < n) d.push((p = proj(c[i])).x, ",", p.y, "L"); + d.pop(); + if (!d.length) return; + x.setAttribute("d", d.join("")); + return x; + }, + + MultiLineString: function(o, proj) { + var x = po.svg("path"), + d = [], + ci = o.coordinates, + cj, // ci[i] + i = -1, + j, + n = ci.length, + m; + while (++i < n) { + cj = ci[i]; + j = -1; + m = cj.length; + d.push("M"); + while (++j < m) d.push((p = proj(cj[j])).x, ",", p.y, "L"); + d.pop(); + } + if (!d.length) return; + x.setAttribute("d", d.join("")); + return x; + }, + + Polygon: function(o, proj) { + var x = po.svg("path"), + d = [], + ci = o.coordinates, + cj, // ci[i] + i = -1, + j, + n = ci.length, + m; + while (++i < n) { + cj = ci[i]; + j = -1; + m = cj.length - 1; + d.push("M"); + while (++j < m) d.push((p = proj(cj[j])).x, ",", p.y, "L"); + d[d.length - 1] = "Z"; + } + if (!d.length) return; + x.setAttribute("d", d.join("")); + return x; + }, + + MultiPolygon: function(o, proj) { + var x = po.svg("path"), + d = [], + ci = o.coordinates, + cj, // ci[i] + ck, // cj[j] + i = -1, + j, + k, + n = ci.length, + m, + l; + while (++i < n) { + cj = ci[i]; + j = -1; + m = cj.length; + while (++j < m) { + ck = cj[j]; + k = -1; + l = ck.length - 1; + d.push("M"); + while (++k < l) d.push((p = proj(ck[k])).x, ",", p.y, "L"); + d[d.length - 1] = "Z"; + } + } + if (!d.length) return; + x.setAttribute("d", d.join("")); + return x; + }, + + GeometryCollection: function(o, proj) { + var g = po.svg("g"), + i = -1, + c = o.geometries, + n = c.length, + x; + while (++i < n) { + x = geometry(c[i], proj); + if (x) g.appendChild(x); + } + return g; + } + + }; + + function rescale(o, e, k) { + return o.type in rescales && rescales[o.type](o, e, k); + } + + var rescales = { + + Point: function (o, e, k) { + var p = o.coordinates; + e.setAttribute("transform", "translate(" + p.x + "," + p.y + ")" + k); + }, + + MultiPoint: function (o, e, k) { + var c = o.coordinates, + i = -1, + n = p.length, + x = e.firstChild, + p; + while (++i < n) { + p = c[i]; + x.setAttribute("transform", "translate(" + p.x + "," + p.y + ")" + k); + x = x.nextSibling; + } + } + + }; + + function load(tile, proj) { + var g = tile.element = po.svg("g"); + tile.features = []; + + proj = projection(proj(tile).locationPoint); + + function update(data) { + var updated = []; + + /* Fetch the next batch of features, if so directed. */ + if (data.next) tile.request = fetch(data.next.href, update); + + /* Convert the GeoJSON to SVG. */ + switch (data.type) { + case "FeatureCollection": { + for (var i = 0; i < data.features.length; i++) { + var feature = data.features[i], + element = geometry(feature.geometry, proj); + if (element) updated.push({element: g.appendChild(element), data: feature}); + } + break; + } + case "Feature": { + var element = geometry(data.geometry, proj); + if (element) updated.push({element: g.appendChild(element), data: data}); + break; + } + default: { + var element = geometry(data, proj); + if (element) updated.push({element: g.appendChild(element), data: {type: "Feature", geometry: data}}); + break; + } + } + + tile.ready = true; + updated.push.apply(tile.features, updated); + geoJson.dispatch({type: "load", tile: tile, features: updated}); + } + + if (url != null) { + tile.request = fetch(typeof url == "function" ? url(tile) : url, update); + } else { + update({type: "FeatureCollection", features: features || []}); + } + } + + function unload(tile) { + if (tile.request) tile.request.abort(true); + } + + function move() { + var zoom = geoJson.map().zoom(), + tiles = geoJson.cache.locks(), // visible tiles + key, // key in locks + tile, // locks[key] + features, // tile.features + i, // current feature index + n, // current feature count, features.length + feature, // features[i] + k; // scale transform + if (scale == "fixed") { + for (key in tiles) { + if ((tile = tiles[key]).scale != zoom) { + k = "scale(" + Math.pow(2, tile.zoom - zoom) + ")"; + i = -1; + n = (features = tile.features).length; + while (++i < n) rescale((feature = features[i]).data.geometry, feature.element, k); + tile.scale = zoom; + } + } + } else { + for (key in tiles) { + i = -1; + n = (features = (tile = tiles[key]).features).length; + while (++i < n) rescale((feature = features[i]).data.geometry, feature.element, ""); + delete tile.scale; + } + } + } + + geoJson.url = function(x) { + if (!arguments.length) return url; + url = typeof x == "string" && /{.}/.test(x) ? po.url(x) : x; + if (url != null) features = null; + if (typeof url == "string") geoJson.tile(false); + return geoJson.reload(); + }; + + geoJson.features = function(x) { + if (!arguments.length) return features; + if (features = x) { + url = null; + geoJson.tile(false); + } + return geoJson.reload(); + }; + + geoJson.clip = function(x) { + if (!arguments.length) return clip; + if (clip) container.removeChild(clipPath); + if (clip = x) container.insertBefore(clipPath, container.firstChild); + var locks = geoJson.cache.locks(); + for (var key in locks) { + if (clip) locks[key].element.setAttribute("clip-path", clipHref); + else locks[key].element.removeAttribute("clip-path"); + } + return geoJson; + }; + + var __tile__ = geoJson.tile; + geoJson.tile = function(x) { + if (arguments.length && !x) geoJson.clip(x); + return __tile__.apply(geoJson, arguments); + }; + + var __map__ = geoJson.map; + geoJson.map = function(x) { + if (x && clipRect) { + var size = x.tileSize(); + clipRect.setAttribute("width", size.x); + clipRect.setAttribute("height", size.y); + } + return __map__.apply(geoJson, arguments); + }; + + geoJson.scale = function(x) { + if (!arguments.length) return scale; + if (scale = x) geoJson.on("move", move); + else geoJson.off("move", move); + if (geoJson.map()) move(); + return geoJson; + }; + + geoJson.show = function(tile) { + if (clip) tile.element.setAttribute("clip-path", clipHref); + else tile.element.removeAttribute("clip-path"); + geoJson.dispatch({type: "show", tile: tile, features: tile.features}); + return geoJson; + }; + + geoJson.reshow = function() { + var locks = geoJson.cache.locks(); + for (var key in locks) geoJson.show(locks[key]); + return geoJson; + }; + + return geoJson; +}; +po.dblclick = function() { + var dblclick = {}, + zoom = "mouse", + map, + container; + + function handle(e) { + var z = map.zoom(); + if (e.shiftKey) z = Math.ceil(z) - z - 1; + else z = 1 - z + Math.floor(z); + zoom === "mouse" ? map.zoomBy(z, map.mouse(e)) : map.zoomBy(z); + } + + dblclick.zoom = function(x) { + if (!arguments.length) return zoom; + zoom = x; + return dblclick; + }; + + dblclick.map = function(x) { + if (!arguments.length) return map; + if (map) { + container.removeEventListener("dblclick", handle, false); + container = null; + } + if (map = x) { + container = map.container(); + container.addEventListener("dblclick", handle, false); + } + return dblclick; + }; + + return dblclick; +}; +po.drag = function() { + var drag = {}, + map, + container, + dragging; + + function mousedown(e) { + if (e.shiftKey) return; + dragging = { + x: e.clientX, + y: e.clientY + }; + map.focusableParent().focus(); + e.preventDefault(); + document.body.style.setProperty("cursor", "move", null); + } + + function mousemove(e) { + if (!dragging) return; + map.panBy({x: e.clientX - dragging.x, y: e.clientY - dragging.y}); + dragging.x = e.clientX; + dragging.y = e.clientY; + } + + function mouseup(e) { + if (!dragging) return; + mousemove(e); + dragging = null; + document.body.style.removeProperty("cursor"); + } + + drag.map = function(x) { + if (!arguments.length) return map; + if (map) { + container.removeEventListener("mousedown", mousedown, false); + container = null; + } + if (map = x) { + container = map.container(); + container.addEventListener("mousedown", mousedown, false); + } + return drag; + }; + + window.addEventListener("mousemove", mousemove, false); + window.addEventListener("mouseup", mouseup, false); + + return drag; +}; +po.wheel = function() { + var wheel = {}, + timePrev = 0, + last = 0, + smooth = true, + zoom = "mouse", + location, + map, + container; + + function move(e) { + location = null; + } + + // mousewheel events are totally broken! + // https://bugs.webkit.org/show_bug.cgi?id=40441 + // not only that, but Chrome and Safari differ in re. to acceleration! + var inner = document.createElement("div"), + outer = document.createElement("div"); + outer.style.visibility = "hidden"; + outer.style.top = "0px"; + outer.style.height = "0px"; + outer.style.width = "0px"; + outer.style.overflowY = "scroll"; + inner.style.height = "2000px"; + outer.appendChild(inner); + document.body.appendChild(outer); + + function mousewheel(e) { + var delta = e.wheelDelta || -e.detail, + point; + + /* Detect the pixels that would be scrolled by this wheel event. */ + if (delta) { + if (smooth) { + try { + outer.scrollTop = 1000; + outer.dispatchEvent(e); + delta = 1000 - outer.scrollTop; + } catch (error) { + // Derp! Hope for the best? + } + delta *= .005; + } + + /* If smooth zooming is disabled, batch events into unit steps. */ + else { + var timeNow = Date.now(); + if (timeNow - timePrev > 200) { + delta = delta > 0 ? +1 : -1; + timePrev = timeNow; + } else { + delta = 0; + } + } + } + + if (delta) { + switch (zoom) { + case "mouse": { + point = map.mouse(e); + if (!location) location = map.pointLocation(point); + map.off("move", move).zoomBy(delta, point, location).on("move", move); + break; + } + case "location": { + map.zoomBy(delta, map.locationPoint(location), location); + break; + } + default: { // center + map.zoomBy(delta); + break; + } + } + } + + e.preventDefault(); + return false; // for Firefox + } + + wheel.smooth = function(x) { + if (!arguments.length) return smooth; + smooth = x; + return wheel; + }; + + wheel.zoom = function(x, l) { + if (!arguments.length) return zoom; + zoom = x; + location = l; + if (map) { + if (zoom == "mouse") map.on("move", move); + else map.off("move", move); + } + return wheel; + }; + + wheel.map = function(x) { + if (!arguments.length) return map; + if (map) { + container.removeEventListener("mousemove", move, false); + container.removeEventListener("mousewheel", mousewheel, false); + container.removeEventListener("MozMousePixelScroll", mousewheel, false); + container = null; + map.off("move", move); + } + if (map = x) { + if (zoom == "mouse") map.on("move", move); + container = map.container(); + container.addEventListener("mousemove", move, false); + container.addEventListener("mousewheel", mousewheel, false); + container.addEventListener("MozMousePixelScroll", mousewheel, false); + } + return wheel; + }; + + return wheel; +}; +po.arrow = function() { + var arrow = {}, + key = {left: 0, right: 0, up: 0, down: 0}, + last = 0, + repeatTimer, + repeatDelay = 250, + repeatInterval = 50, + speed = 16, + map, + parent; + + function keydown(e) { + if (e.ctrlKey || e.altKey || e.metaKey) return; + var now = Date.now(), dx = 0, dy = 0; + switch (e.keyCode) { + case 37: { + if (!key.left) { + last = now; + key.left = 1; + if (!key.right) dx = speed; + } + break; + } + case 39: { + if (!key.right) { + last = now; + key.right = 1; + if (!key.left) dx = -speed; + } + break; + } + case 38: { + if (!key.up) { + last = now; + key.up = 1; + if (!key.down) dy = speed; + } + break; + } + case 40: { + if (!key.down) { + last = now; + key.down = 1; + if (!key.up) dy = -speed; + } + break; + } + default: return; + } + if (dx || dy) map.panBy({x: dx, y: dy}); + if (!repeatTimer && (key.left | key.right | key.up | key.down)) { + repeatTimer = setInterval(repeat, repeatInterval); + } + e.preventDefault(); + } + + function keyup(e) { + last = Date.now(); + switch (e.keyCode) { + case 37: key.left = 0; break; + case 39: key.right = 0; break; + case 38: key.up = 0; break; + case 40: key.down = 0; break; + default: return; + } + if (repeatTimer && !(key.left | key.right | key.up | key.down)) { + repeatTimer = clearInterval(repeatTimer); + } + e.preventDefault(); + } + + function keypress(e) { + switch (e.charCode) { + case 45: case 95: map.zoom(Math.ceil(map.zoom()) - 1); break; // - _ + case 43: case 61: map.zoom(Math.floor(map.zoom()) + 1); break; // = + + default: return; + } + e.preventDefault(); + } + + function repeat() { + if (!map) return; + if (Date.now() < last + repeatDelay) return; + var dx = (key.left - key.right) * speed, + dy = (key.up - key.down) * speed; + if (dx || dy) map.panBy({x: dx, y: dy}); + } + + arrow.map = function(x) { + if (!arguments.length) return map; + if (map) { + parent.removeEventListener("keypress", keypress, false); + parent.removeEventListener("keydown", keydown, false); + parent.removeEventListener("keyup", keyup, false); + parent = null; + } + if (map = x) { + parent = map.focusableParent(); + parent.addEventListener("keypress", keypress, false); + parent.addEventListener("keydown", keydown, false); + parent.addEventListener("keyup", keyup, false); + } + return arrow; + }; + + arrow.speed = function(x) { + if (!arguments.length) return speed; + speed = x; + return arrow; + }; + + return arrow; +}; +po.hash = function() { + var hash = {}, + s0, // cached location.hash + lat = 90 - 1e-8, // allowable latitude range + map; + + var parser = function(map, s) { + var args = s.split("/").map(Number); + if (args.length < 3 || args.some(isNaN)) return true; // replace bogus hash + else { + var size = map.size(); + map.zoomBy(args[0] - map.zoom(), + {x: size.x / 2, y: size.y / 2}, + {lat: Math.min(lat, Math.max(-lat, args[1])), lon: args[2]}); + } + }; + + var formatter = function(map) { + var center = map.center(), + zoom = map.zoom(), + precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)); + return "#" + zoom.toFixed(2) + + "/" + center.lat.toFixed(precision) + + "/" + center.lon.toFixed(precision); + }; + + function move() { + var s1 = formatter(map); + if (s0 !== s1) location.replace(s0 = s1); // don't recenter the map! + } + + function hashchange() { + if (location.hash === s0) return; // ignore spurious hashchange events + if (parser(map, (s0 = location.hash).substring(1))) + move(); // replace bogus hash + } + + hash.map = function(x) { + if (!arguments.length) return map; + if (map) { + map.off("move", move); + window.removeEventListener("hashchange", hashchange, false); + } + if (map = x) { + map.on("move", move); + window.addEventListener("hashchange", hashchange, false); + location.hash ? hashchange() : move(); + } + return hash; + }; + + hash.parser = function(x) { + if (!arguments.length) return parser; + parser = x; + return hash; + }; + + hash.formatter = function(x) { + if (!arguments.length) return formatter; + formatter = x; + return hash; + }; + + return hash; +}; +po.touch = function() { + var touch = {}, + map, + container, + rotate = false, + last = 0, + zoom, + angle, + locations = {}; // touch identifier -> location + + window.addEventListener("touchmove", touchmove, false); + + function touchstart(e) { + var i = -1, + n = e.touches.length, + t = Date.now(); + + // doubletap detection + if ((n == 1) && (t - last < 300)) { + var z = map.zoom(); + map.zoomBy(1 - z + Math.floor(z), map.mouse(e.touches[0])); + e.preventDefault(); + } + last = t; + + // store original zoom & touch locations + zoom = map.zoom(); + angle = map.angle(); + while (++i < n) { + t = e.touches[i]; + locations[t.identifier] = map.pointLocation(map.mouse(t)); + } + } + + function touchmove(e) { + switch (e.touches.length) { + case 1: { // single-touch pan + var t0 = e.touches[0]; + map.zoomBy(0, map.mouse(t0), locations[t0.identifier]); + e.preventDefault(); + break; + } + case 2: { // double-touch pan + zoom + rotate + var t0 = e.touches[0], + t1 = e.touches[1], + p0 = map.mouse(t0), + p1 = map.mouse(t1), + p2 = {x: (p0.x + p1.x) / 2, y: (p0.y + p1.y) / 2}, // center point + c0 = po.map.locationCoordinate(locations[t0.identifier]), + c1 = po.map.locationCoordinate(locations[t1.identifier]), + c2 = {row: (c0.row + c1.row) / 2, column: (c0.column + c1.column) / 2, zoom: 0}, + l2 = po.map.coordinateLocation(c2); // center location + map.zoomBy(Math.log(e.scale) / Math.LN2 + zoom - map.zoom(), p2, l2); + if (rotate) map.angle(e.rotation / 180 * Math.PI + angle); + e.preventDefault(); + break; + } + } + } + + touch.rotate = function(x) { + if (!arguments.length) return rotate; + rotate = x; + return touch; + }; + + touch.map = function(x) { + if (!arguments.length) return map; + if (map) { + container.removeEventListener("touchstart", touchstart, false); + container = null; + } + if (map = x) { + container = map.container(); + container.addEventListener("touchstart", touchstart, false); + } + return touch; + }; + + return touch; +}; +// Default map controls. +po.interact = function() { + var interact = {}, + drag = po.drag(), + wheel = po.wheel(), + dblclick = po.dblclick(), + touch = po.touch(), + arrow = po.arrow(); + + interact.map = function(x) { + drag.map(x); + wheel.map(x); + dblclick.map(x); + touch.map(x); + arrow.map(x); + return interact; + }; + + return interact; +}; +po.compass = function() { + var compass = {}, + g = po.svg("g"), + ticks = {}, + r = 30, + speed = 16, + last = 0, + repeatDelay = 250, + repeatInterval = 50, + position = "top-left", // top-left, top-right, bottom-left, bottom-right + zoomStyle = "small", // none, small, big + zoomContainer, + panStyle = "small", // none, small + panTimer, + panDirection, + panContainer, + drag, + dragRect = po.svg("rect"), + map, + container, + window; + + g.setAttribute("class", "compass"); + dragRect.setAttribute("class", "back fore"); + dragRect.setAttribute("pointer-events", "none"); + dragRect.setAttribute("display", "none"); + + function panStart(e) { + g.setAttribute("class", "compass active"); + if (!panTimer) panTimer = setInterval(panRepeat, repeatInterval); + if (panDirection) map.panBy(panDirection); + last = Date.now(); + return cancel(e); + } + + function panRepeat() { + if (panDirection && (Date.now() > last + repeatDelay)) { + map.panBy(panDirection); + } + } + + function mousedown(e) { + if (e.shiftKey) { + drag = {x0: map.mouse(e)}; + map.focusableParent().focus(); + return cancel(e); + } + } + + function mousemove(e) { + if (!drag) return; + drag.x1 = map.mouse(e); + dragRect.setAttribute("x", Math.min(drag.x0.x, drag.x1.x)); + dragRect.setAttribute("y", Math.min(drag.x0.y, drag.x1.y)); + dragRect.setAttribute("width", Math.abs(drag.x0.x - drag.x1.x)); + dragRect.setAttribute("height", Math.abs(drag.x0.y - drag.x1.y)); + dragRect.removeAttribute("display"); + } + + function mouseup(e) { + g.setAttribute("class", "compass"); + if (drag) { + if (drag.x1) { + map.extent([ + map.pointLocation({ + x: Math.min(drag.x0.x, drag.x1.x), + y: Math.max(drag.x0.y, drag.x1.y) + }), + map.pointLocation({ + x: Math.max(drag.x0.x, drag.x1.x), + y: Math.min(drag.x0.y, drag.x1.y) + }) + ]); + dragRect.setAttribute("display", "none"); + } + drag = null; + } + if (panTimer) { + clearInterval(panTimer); + panTimer = 0; + } + } + + function panBy(x) { + return function() { + x ? this.setAttribute("class", "active") : this.removeAttribute("class"); + panDirection = x; + }; + } + + function zoomBy(x) { + return function(e) { + g.setAttribute("class", "compass active"); + var z = map.zoom(); + map.zoom(x < 0 ? Math.ceil(z) - 1 : Math.floor(z) + 1); + return cancel(e); + }; + } + + function zoomTo(x) { + return function(e) { + map.zoom(x); + return cancel(e); + }; + } + + function zoomOver() { + this.setAttribute("class", "active"); + } + + function zoomOut() { + this.removeAttribute("class"); + } + + function cancel(e) { + e.stopPropagation(); + e.preventDefault(); + return false; + } + + function pan(by) { + var x = Math.SQRT1_2 * r, + y = r * .7, + z = r * .2, + g = po.svg("g"), + dir = g.appendChild(po.svg("path")), + chv = g.appendChild(po.svg("path")); + dir.setAttribute("class", "direction"); + dir.setAttribute("pointer-events", "all"); + dir.setAttribute("d", "M0,0L" + x + "," + x + "A" + r + "," + r + " 0 0,1 " + -x + "," + x + "Z"); + chv.setAttribute("class", "chevron"); + chv.setAttribute("d", "M" + z + "," + (y - z) + "L0," + y + " " + -z + "," + (y - z)); + chv.setAttribute("pointer-events", "none"); + g.addEventListener("mousedown", panStart, false); + g.addEventListener("mouseover", panBy(by), false); + g.addEventListener("mouseout", panBy(null), false); + g.addEventListener("dblclick", cancel, false); + return g; + } + + function zoom(by) { + var x = r * .4, + y = x / 2, + g = po.svg("g"), + back = g.appendChild(po.svg("path")), + dire = g.appendChild(po.svg("path")), + chev = g.appendChild(po.svg("path")), + fore = g.appendChild(po.svg("path")); + back.setAttribute("class", "back"); + back.setAttribute("d", "M" + -x + ",0V" + -x + "A" + x + "," + x + " 0 1,1 " + x + "," + -x + "V0Z"); + dire.setAttribute("class", "direction"); + dire.setAttribute("d", back.getAttribute("d")); + chev.setAttribute("class", "chevron"); + chev.setAttribute("d", "M" + -y + "," + -x + "H" + y + (by > 0 ? "M0," + (-x - y) + "V" + -y : "")); + fore.setAttribute("class", "fore"); + fore.setAttribute("fill", "none"); + fore.setAttribute("d", back.getAttribute("d")); + g.addEventListener("mousedown", zoomBy(by), false); + g.addEventListener("mouseover", zoomOver, false); + g.addEventListener("mouseout", zoomOut, false); + g.addEventListener("dblclick", cancel, false); + return g; + } + + function tick(i) { + var x = r * .2, + y = r * .4, + g = po.svg("g"), + back = g.appendChild(po.svg("rect")), + chev = g.appendChild(po.svg("path")); + back.setAttribute("pointer-events", "all"); + back.setAttribute("fill", "none"); + back.setAttribute("x", -y); + back.setAttribute("y", -.75 * y); + back.setAttribute("width", 2 * y); + back.setAttribute("height", 1.5 * y); + chev.setAttribute("class", "chevron"); + chev.setAttribute("d", "M" + -x + ",0H" + x); + g.addEventListener("mousedown", zoomTo(i), false); + g.addEventListener("dblclick", cancel, false); + return g; + } + + function move() { + var x = r + 6, y = x, size = map.size(); + switch (position) { + case "top-left": break; + case "top-right": x = size.x - x; break; + case "bottom-left": y = size.y - y; break; + case "bottom-right": x = size.x - x; y = size.y - y; break; + } + g.setAttribute("transform", "translate(" + x + "," + y + ")"); + dragRect.setAttribute("transform", "translate(" + -x + "," + -y + ")"); + for (var i in ticks) { + i == map.zoom() + ? ticks[i].setAttribute("class", "active") + : ticks[i].removeAttribute("class"); + } + } + + function draw() { + while (g.lastChild) g.removeChild(g.lastChild); + + g.appendChild(dragRect); + + if (panStyle != "none") { + panContainer = g.appendChild(po.svg("g")); + panContainer.setAttribute("class", "pan"); + + var back = panContainer.appendChild(po.svg("circle")); + back.setAttribute("class", "back"); + back.setAttribute("r", r); + + var s = panContainer.appendChild(pan({x: 0, y: -speed})); + s.setAttribute("transform", "rotate(0)"); + + var w = panContainer.appendChild(pan({x: speed, y: 0})); + w.setAttribute("transform", "rotate(90)"); + + var n = panContainer.appendChild(pan({x: 0, y: speed})); + n.setAttribute("transform", "rotate(180)"); + + var e = panContainer.appendChild(pan({x: -speed, y: 0})); + e.setAttribute("transform", "rotate(270)"); + + var fore = panContainer.appendChild(po.svg("circle")); + fore.setAttribute("fill", "none"); + fore.setAttribute("class", "fore"); + fore.setAttribute("r", r); + } else { + panContainer = null; + } + + if (zoomStyle != "none") { + zoomContainer = g.appendChild(po.svg("g")); + zoomContainer.setAttribute("class", "zoom"); + + var j = -.5; + if (zoomStyle == "big") { + ticks = {}; + for (var i = map.zoomRange()[0], j = 0; i <= map.zoomRange()[1]; i++, j++) { + (ticks[i] = zoomContainer.appendChild(tick(i))) + .setAttribute("transform", "translate(0," + (-(j + .75) * r * .4) + ")"); + } + } + + var p = panStyle == "none" ? .4 : 2; + zoomContainer.setAttribute("transform", "translate(0," + r * (/^top-/.test(position) ? (p + (j + .5) * .4) : -p) + ")"); + zoomContainer.appendChild(zoom(+1)).setAttribute("transform", "translate(0," + (-(j + .5) * r * .4) + ")"); + zoomContainer.appendChild(zoom(-1)).setAttribute("transform", "scale(-1)"); + } else { + zoomContainer = null; + } + + move(); + } + + compass.radius = function(x) { + if (!arguments.length) return r; + r = x; + if (map) draw(); + return compass; + }; + + compass.speed = function(x) { + if (!arguments.length) return r; + speed = x; + return compass; + }; + + compass.position = function(x) { + if (!arguments.length) return position; + position = x; + if (map) draw(); + return compass; + }; + + compass.pan = function(x) { + if (!arguments.length) return panStyle; + panStyle = x; + if (map) draw(); + return compass; + }; + + compass.zoom = function(x) { + if (!arguments.length) return zoomStyle; + zoomStyle = x; + if (map) draw(); + return compass; + }; + + compass.map = function(x) { + if (!arguments.length) return map; + if (map) { + container.removeEventListener("mousedown", mousedown, false); + container.removeChild(g); + container = null; + window.removeEventListener("mousemove", mousemove, false); + window.removeEventListener("mouseup", mouseup, false); + window = null; + map.off("move", move).off("resize", move); + } + if (map = x) { + container = map.container(); + container.appendChild(g); + container.addEventListener("mousedown", mousedown, false); + window = container.ownerDocument.defaultView; + window.addEventListener("mousemove", mousemove, false); + window.addEventListener("mouseup", mouseup, false); + map.on("move", move).on("resize", move); + draw(); + } + return compass; + }; + + return compass; +}; +po.grid = function() { + var grid = {}, + map, + g = po.svg("g"); + + g.setAttribute("class", "grid"); + + function move(e) { + var p, + line = g.firstChild, + size = map.size(), + nw = map.pointLocation(zero), + se = map.pointLocation(size), + step = Math.pow(2, 4 - Math.round(map.zoom())); + + // Round to step. + nw.lat = Math.floor(nw.lat / step) * step; + nw.lon = Math.ceil(nw.lon / step) * step; + + // Longitude ticks. + for (var x; (x = map.locationPoint(nw).x) <= size.x; nw.lon += step) { + if (!line) line = g.appendChild(po.svg("line")); + line.setAttribute("x1", x); + line.setAttribute("x2", x); + line.setAttribute("y1", 0); + line.setAttribute("y2", size.y); + line = line.nextSibling; + } + + // Latitude ticks. + for (var y; (y = map.locationPoint(nw).y) <= size.y; nw.lat -= step) { + if (!line) line = g.appendChild(po.svg("line")); + line.setAttribute("y1", y); + line.setAttribute("y2", y); + line.setAttribute("x1", 0); + line.setAttribute("x2", size.x); + line = line.nextSibling; + } + + // Remove extra ticks. + while (line) { + var next = line.nextSibling; + g.removeChild(line); + line = next; + } + } + + grid.map = function(x) { + if (!arguments.length) return map; + if (map) { + g.parentNode.removeChild(g); + map.off("move", move).off("resize", move); + } + if (map = x) { + map.on("move", move).on("resize", move); + map.container().appendChild(g); + map.dispatch({type: "move"}); + } + return grid; + }; + + return grid; +}; +po.stylist = function() { + var attrs = [], + styles = [], + title; + + function stylist(e) { + var ne = e.features.length, + na = attrs.length, + ns = styles.length, + f, // feature + d, // data + o, // element + x, // attr or style or title descriptor + v, // attr or style or title value + i, + j; + for (i = 0; i < ne; ++i) { + if (!(o = (f = e.features[i]).element)) continue; + d = f.data; + for (j = 0; j < na; ++j) { + v = (x = attrs[j]).value; + if (typeof v === "function") v = v.call(null, d); + v == null ? (x.name.local + ? o.removeAttributeNS(x.name.space, x.name.local) + : o.removeAttribute(x.name)) : (x.name.local + ? o.setAttributeNS(x.name.space, x.name.local, v) + : o.setAttribute(x.name, v)); + } + for (j = 0; j < ns; ++j) { + v = (x = styles[j]).value; + if (typeof v === "function") v = v.call(null, d); + v == null + ? o.style.removeProperty(x.name) + : o.style.setProperty(x.name, v, x.priority); + } + if (v = title) { + if (typeof v === "function") v = v.call(null, d); + while (o.lastChild) o.removeChild(o.lastChild); + if (v != null) o.appendChild(po.svg("title")).appendChild(document.createTextNode(v)); + } + } + } + + stylist.attr = function(n, v) { + attrs.push({name: ns(n), value: v}); + return stylist; + }; + + stylist.style = function(n, v, p) { + styles.push({name: n, value: v, priority: arguments.length < 3 ? null : p}); + return stylist; + }; + + stylist.title = function(v) { + title = v; + return stylist; + }; + + return stylist; +}; +})(org.polymaps); -- 2.7.4