Adding a WMTS layer and capabilities parser to work with OGC WMTS service implementations. Thanks August Town for this nice contribution. p=august,me r=me (closes #2637)
git-svn-id: http://svn.openlayers.org/trunk/openlayers@10388 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
@@ -124,6 +124,7 @@
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"OpenLayers/Layer/WMS.js",
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"OpenLayers/Layer/WMS/Untiled.js",
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"OpenLayers/Layer/WMS/Post.js",
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"OpenLayers/Layer/WMTS.js",
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"OpenLayers/Layer/ArcIMS.js",
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"OpenLayers/Layer/GeoRSS.js",
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"OpenLayers/Layer/Boxes.js",
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@@ -289,6 +290,8 @@
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"OpenLayers/Format/SOSGetFeatureOfInterest.js",
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"OpenLayers/Format/OWSContext.js",
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"OpenLayers/Format/OWSContext/v0_3_1.js",
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"OpenLayers/Format/WMTSCapabilities.js",
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"OpenLayers/Format/WMTSCapabilities/v1_0_0.js",
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"OpenLayers/Layer/WFS.js",
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"OpenLayers/Control/GetFeature.js",
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"OpenLayers/Control/MouseToolbar.js",
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@@ -48,6 +48,9 @@ OpenLayers.Format.OWSCommon.v1_1_0 = OpenLayers.Class(OpenLayers.Format.OWSCommo
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},
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"MaximumValue": function(node, range) {
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range.maxValue = this.getChildValue(node);
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},
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"Identifier": function(node, obj) {
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obj.identifier = this.getChildValue(node);
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}
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}, OpenLayers.Format.OWSCommon.v1.prototype.readers["ows"])
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},
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80
lib/OpenLayers/Format/WMTSCapabilities.js
Normal file
80
lib/OpenLayers/Format/WMTSCapabilities.js
Normal file
@@ -0,0 +1,80 @@
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/* Copyright (c) 2006-2009 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/XML.js
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*/
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/**
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* Class: OpenLayers.Format.WMTSCapabilities
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* Read WMTS Capabilities.
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*
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* Inherits from:
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* - <OpenLayers.Format.XML>
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*/
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OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
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/**
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* APIProperty: defaultVersion
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* {String} Version number to assume if none found. Default is "1.0.0".
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*/
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defaultVersion: "1.0.0",
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/**
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* APIProperty: version
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* {String} Specify a version string if one is known.
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*/
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version: null,
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/**
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* Property: parser
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* {<OpenLayers.Format>} A cached versioned format used for reading.
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*/
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parser: null,
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/**
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* Constructor: OpenLayers.Format.WMTSCapabilities
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* Create a new parser for WMTS capabilities.
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*
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* Parameters:
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* options - {Object} An optional object whose properties will be set on
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* this instance.
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*/
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initialize: function(options) {
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OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
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this.options = options;
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},
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/**
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* APIMethod: read
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* Read capabilities data from a string, and return information about
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* the service (offering and observedProperty mostly).
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*
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* Parameters:
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* data - {String} or {DOMElement} data to read/parse.
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*
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* Returns:
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* {Object} Info about the WMTS Capabilities
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*/
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read: function(data) {
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if (typeof data == "string") {
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data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
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}
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var root = data.documentElement;
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var version = this.version || root.getAttribute("version") || this.defaultVersion;
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if (!this.parser || this.parser.version !== version) {
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var constr = OpenLayers.Format.WMTSCapabilities[
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"v" + version.replace(/\./g, "_")
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];
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if (!constr) {
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throw new Error("Can't find a WMTS capabilities parser for version " + version);
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}
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var parser = new constr(this.options);
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}
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return parser.read(data);
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},
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CLASS_NAME: "OpenLayers.Format.WMTSCapabilities"
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});
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186
lib/OpenLayers/Format/WMTSCapabilities/v1_0_0.js
Normal file
186
lib/OpenLayers/Format/WMTSCapabilities/v1_0_0.js
Normal file
@@ -0,0 +1,186 @@
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/* Copyright (c) 2006-2009 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/WMTSCapabilities.js
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* @requires OpenLayers/Format/OWSCommon/v1_1_0.js
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*/
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/**
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* Class: OpenLayers.Format.WMTSCapabilities.v1_0_0
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* Read WMTS Capabilities version 1.0.0.
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*
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* Inherits from:
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* - <OpenLayers.Format.WMTSCapabilities>
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*/
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OpenLayers.Format.WMTSCapabilities.v1_0_0 = OpenLayers.Class(
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OpenLayers.Format.OWSCommon.v1_1_0, {
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/**
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* Property: version
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* {String} The parser version ("1.0.0").
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*/
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version: "1.0.0",
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/**
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* Property: namespaces
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* {Object} Mapping of namespace aliases to namespace URIs.
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*/
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namespaces: {
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ows: "http://www.opengis.net/ows/1.1",
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wmts: "http://www.opengis.net/wmts/1.0",
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xlink: "http://www.w3.org/1999/xlink"
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},
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/**
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* Property: defaultPrefix
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* {String} The default namespace alias for creating element nodes.
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*/
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defaultPrefix: "wmts",
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/**
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* Constructor: OpenLayers.Format.WMTSCapabilities.v1_0_0
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* Create a new parser for WMTS capabilities version 1.0.0.
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*
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* Parameters:
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* options - {Object} An optional object whose properties will be set on
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* this instance.
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*/
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initialize: function(options) {
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OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
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this.options = options;
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},
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/**
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* APIMethod: read
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* Read capabilities data from a string, and return info about the WMTS.
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*
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* Parameters:
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* data - {String} or {DOMElement} data to read/parse.
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*
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* Returns:
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* {Object} Information about the SOS service.
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*/
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read: function(data) {
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if(typeof data == "string") {
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data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
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}
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if(data && data.nodeType == 9) {
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data = data.documentElement;
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}
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var capabilities = {};
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this.readNode(data, capabilities);
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capabilities.version = this.version;
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return capabilities;
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},
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/**
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* Property: readers
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* Contains public functions, grouped by namespace prefix, that will
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* be applied when a namespaced node is found matching the function
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* name. The function will be applied in the scope of this parser
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* with two arguments: the node being read and a context object passed
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* from the parent.
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*/
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readers: {
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"wmts": {
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"Capabilities": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"Contents": function(node, obj) {
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obj.contents = {};
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obj.contents.layers = [];
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obj.contents.tileMatrixSets = {};
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this.readChildNodes(node, obj.contents);
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},
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"Layer": function(node, obj) {
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var layer = {
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styles: [],
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formats: [],
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tileMatrixSetLinks: []
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};
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layer.layers = [];
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this.readChildNodes(node, layer);
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obj.layers.push(layer);
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},
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"Style": function(node, obj) {
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var style = {};
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style.isDefault = node.getAttribute("isDefault");
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this.readChildNodes(node, style);
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obj.styles.push(style);
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},
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"Format": function(node, obj) {
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obj.formats.push(this.getChildValue(node));
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},
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"TileMatrixSetLink": function(node, obj) {
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var tileMatrixSetLink = {};
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this.readChildNodes(node, tileMatrixSetLink);
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obj.tileMatrixSetLinks.push(tileMatrixSetLink);
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},
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"TileMatrixSet": function(node, obj) {
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// node could be child of wmts:Contents or wmts:TileMatrixSetLink
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// duck type wmts:Contents by looking for layers
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if (obj.layers) {
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// TileMatrixSet as object type in schema
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var tileMatrixSet = {};
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tileMatrixSet.matrixIds = [];
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this.readChildNodes(node, tileMatrixSet);
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obj.tileMatrixSets[tileMatrixSet.identifier] = tileMatrixSet;
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} else {
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// TileMatrixSet as string type in schema
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obj.tileMatrixSet = this.getChildValue(node);
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}
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},
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"TileMatrix": function(node, obj) {
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var tileMatrix = {};
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this.readChildNodes(node, tileMatrix);
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obj.matrixIds.push(tileMatrix);
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},
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"ScaleDenominator": function(node, obj) {
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obj.scaleDenominator = parseFloat(this.getChildValue(node));
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},
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"TopLeftCorner": function(node, obj) {
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var topLeftCorner = this.getChildValue(node);
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var coords = topLeftCorner.split(" ");
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obj.topLeftCorner = new OpenLayers.LonLat(parseFloat(coords[1]), parseFloat(coords[0]));
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},
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"TileWidth": function(node, obj) {
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obj.tileWidth = parseInt(this.getChildValue(node));
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},
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"TileHeight": function(node, obj) {
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obj.tileHeight = parseInt(this.getChildValue(node));
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},
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"MatrixWidth": function(node, obj) {
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obj.matrixWidth = parseInt(this.getChildValue(node));
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},
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"MatrixHeight": function(node, obj) {
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obj.matrixHeight = parseInt(this.getChildValue(node));
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},
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// not used for now, can be added in the future though
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/*"Themes": function(node, obj) {
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obj.themes = [];
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this.readChildNodes(node, obj.themes);
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},
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"Theme": function(node, obj) {
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var theme = {};
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this.readChildNodes(node, theme);
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obj.push(theme);
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},*/
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"WSDL": function(node, obj) {
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obj.wsdl = {};
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obj.wsdl.href = node.getAttribute("xlink:href");
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// TODO: other attributes of <WSDL> element
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},
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"ServiceMetadataURL": function(node, obj) {
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obj.serviceMetadataUrl = {};
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obj.serviceMetadataUrl.href = node.getAttribute("xlink:href");
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// TODO: other attributes of <ServiceMetadataURL> element
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}
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},
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"ows": OpenLayers.Format.OWSCommon.v1_1_0.prototype.readers["ows"]
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},
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CLASS_NAME: "OpenLayers.Format.WMTSCapabilities.v1_0_0"
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});
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394
lib/OpenLayers/Layer/WMTS.js
Normal file
394
lib/OpenLayers/Layer/WMTS.js
Normal file
@@ -0,0 +1,394 @@
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/* Copyright (c) 2006-2009 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Layer/Grid.js
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* @requires OpenLayers/Tile/Image.js
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*/
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/**
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* Class: OpenLayers.Layer.WMTS
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* Instances of the WMTS class allow viewing of tiles from a service that
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* implements the OGC WMTS specification version 1.0.0.
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*
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* Inherits from:
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* - <OpenLayers.Layer.Grid>
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*/
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OpenLayers.Layer.WMTS = OpenLayers.Class(OpenLayers.Layer.Grid, {
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/**
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* APIProperty: isBaseLayer
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* {Boolean}
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*/
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isBaseLayer: true,
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/**
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* Property: version
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* {String} WMTS version. Default is "1.0.0".
|
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*/
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version: "1.0.0",
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/**
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* APIProperty: requestEncoding
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* {String} Request encoding. Can be "REST" or "KVP". Default is "KVP".
|
||||
*/
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requestEncoding: "KVP",
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/**
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* APIProperty: url
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* {String} The base URL for the WMTS service.
|
||||
*/
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||||
url: null,
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||||
|
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/**
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* APIProperty: layer
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* {String} The layer identifier advertised by the WMTS service.
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||||
*/
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||||
layer: null,
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||||
|
||||
/**
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||||
* APIProperty: matrixSet
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* {String} One of the advertised matrix set identifiers. Must be provided.
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||||
*/
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||||
matrixSet: null,
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||||
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||||
/**
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||||
* APIProperty: style
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||||
* {String} One of the advertised layer styles. Must be provided.
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||||
*/
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||||
style: null,
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||||
|
||||
/**
|
||||
* APIProperty: format
|
||||
* {String} The image MIME type. Default is "image/jpeg".
|
||||
*/
|
||||
format: "image/jpeg",
|
||||
|
||||
/**
|
||||
* APIProperty: tileOrigin
|
||||
* {<OpenLayers.LonLat>} The top-left corner of the tile matrix in map
|
||||
* units.
|
||||
*/
|
||||
tileOrigin: null,
|
||||
|
||||
/**
|
||||
* APIProperty: tileFullExtent
|
||||
* {<OpenLayers.Bounds>} The full extent of the tile set. If not supplied,
|
||||
* the layer's <maxExtent> property will be used.
|
||||
*/
|
||||
tileFullExtent: null,
|
||||
|
||||
/**
|
||||
* APIProperty: formatSuffix
|
||||
* {String} For REST request encoding, an image format suffix must be
|
||||
* included in the request. If not provided, the suffix will be derived
|
||||
* from the <format> property.
|
||||
*/
|
||||
formatSuffix: null,
|
||||
|
||||
/**
|
||||
* APIProperty: matrixIds
|
||||
* {Array} A list of tile matrix identifiers. If not provided, the matrix
|
||||
* identifiers will be assumed to be integers corresponding to the
|
||||
* map zoom level. If a list of strings is provided, each item should
|
||||
* be the matrix identifier that corresponds to the map zoom level.
|
||||
* Additionally, a list of objects can be provided. Each object should
|
||||
* describe the matrix as presented in the WMTS capabilities. These
|
||||
* objects should have the propertes shown below.
|
||||
*
|
||||
* Matrix properties:
|
||||
* identifier - {String} The matrix identifier (required).
|
||||
* topLeftCorner - {<OpenLayers.LonLat>} The top left corner of the
|
||||
* matrix. Must be provided if different than the layer <tileOrigin>.
|
||||
* tileWidth - {Number} The tile width for the matrix. Must be provided
|
||||
* if different than the width given in the layer <tileSize>.
|
||||
* tileHeight - {Number} The tile height for the matrix. Must be provided
|
||||
* if different than the height given in the layer <tileSize>.
|
||||
*/
|
||||
matrixIds: null,
|
||||
|
||||
/**
|
||||
* APIProperty: dimensions
|
||||
* {Array} For RESTful request encoding, extra dimensions may be specified.
|
||||
* Items in this list should be property names in the <params> object.
|
||||
* Values of extra dimensions will be determined from the corresponding
|
||||
* values in the <params> object.
|
||||
*/
|
||||
dimensions: null,
|
||||
|
||||
/**
|
||||
* APIProperty: params
|
||||
* {Object} Extra parameters to include in tile requests. For KVP
|
||||
* <requestEncoding>, these properties will be encoded in the request
|
||||
* query string. For REST <requestEncoding>, these properties will
|
||||
* become part of the request path, with order determined by the
|
||||
* <dimensions> list.
|
||||
*/
|
||||
params: null,
|
||||
|
||||
/**
|
||||
* Property: formatSuffixMap
|
||||
* {Object} a map between WMTS 'format' request parameter and tile image file suffix
|
||||
*/
|
||||
formatSuffixMap: {
|
||||
"image/png": "png",
|
||||
"image/png8": "png",
|
||||
"image/png24": "png",
|
||||
"image/png32": "png",
|
||||
"png": "png",
|
||||
"image/jpeg": "jpg",
|
||||
"image/jpg": "jpg",
|
||||
"jpeg": "jpg",
|
||||
"jpg": "jpg"
|
||||
},
|
||||
|
||||
/**
|
||||
* Constructor: OpenLayers.Layer.WMTS
|
||||
* Create a new WMTS layer.
|
||||
*
|
||||
* Parameters:
|
||||
* config - {Object} Configuration properties for the layer.
|
||||
*
|
||||
* Required configuration properties:
|
||||
* url - {String} The base url for the service. See the <url> property.
|
||||
* layer - {String} The layer identifier. See the <layer> property.
|
||||
* matrixSet - {String} The tile matrix set identifier. See the <matrixSet>
|
||||
* property.
|
||||
*
|
||||
* Any other documented layer properties can be provided in the config object.
|
||||
*/
|
||||
initialize: function(config) {
|
||||
config.params = OpenLayers.Util.upperCaseObject(config.params);
|
||||
var args = [config.name, config.url, config.params, config];
|
||||
OpenLayers.Layer.Grid.prototype.initialize.apply(this, args);
|
||||
|
||||
// confirm required properties are supplied
|
||||
var required = {
|
||||
url: true,
|
||||
layer: true,
|
||||
style: true,
|
||||
matrixSet: true
|
||||
};
|
||||
for (var prop in required) {
|
||||
if (!(prop in this)) {
|
||||
throw new Error("Missing property '" + prop + "' in layer configuration.");
|
||||
}
|
||||
}
|
||||
|
||||
// determine format suffix (for REST)
|
||||
if (!this.formatSuffix) {
|
||||
this.formatSuffix = this.formatSuffixMap[this.format] || this.format.split("/").pop();
|
||||
}
|
||||
|
||||
// expand matrixIds (may be array of string or array of object)
|
||||
if (this.matrixIds) {
|
||||
var len = this.matrixIds.length;
|
||||
if (len && typeof this.matrixIds[0] === "string") {
|
||||
var ids = this.matrixIds;
|
||||
this.matrixIds = new Array(len)
|
||||
for (var i=0; i<len; ++i) {
|
||||
this.matrixIds[i] = {identifier: ids[i]};
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: updateMatrixProperties
|
||||
* Set as a listener for zoom end to update tile matrix related properties.
|
||||
*/
|
||||
updateMatrixProperties: function() {
|
||||
if (this.matrixIds && this.matrixIds.length) {
|
||||
var zoom = this.map.getZoom();
|
||||
var matrix = this.matrixIds[zoom];
|
||||
if (matrix) {
|
||||
if (matrix.topLeftCorner) {
|
||||
this.tileOrigin = matrix.topLeftCorner;
|
||||
}
|
||||
if (matrix.tileWidth && matrix.tileHeight) {
|
||||
this.tileSize = new OpenLayers.Size(
|
||||
matrix.tileWidth, matrix.tileHeight
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: setMap
|
||||
* Overwrite default <setMap> from Layer
|
||||
*
|
||||
* Parameters:
|
||||
* map - {<OpenLayers.Map>}
|
||||
*/
|
||||
setMap: function(map) {
|
||||
OpenLayers.Layer.Grid.prototype.setMap.apply(this, arguments);
|
||||
this.map.events.on({
|
||||
zoomend: this.updateMatrixProperties,
|
||||
scope: this
|
||||
});
|
||||
this.updateMatrixProperties();
|
||||
if (!this.tileOrigin) {
|
||||
this.tileOrigin = new OpenLayers.LonLat(this.maxExtent.left, this.maxExtent.top);
|
||||
}
|
||||
if (!this.tileFullExtent) {
|
||||
this.tileFullExtent = this.maxExtent;
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: removeMap
|
||||
*/
|
||||
removeMap: function() {
|
||||
if (this.map) {
|
||||
this.map.events.un({
|
||||
zoomend: this.updateMatrixProperties,
|
||||
scope: this
|
||||
});
|
||||
}
|
||||
OpenLayers.Layer.Grid.prototype.removeMap.apply(this, arguments);
|
||||
},
|
||||
|
||||
/**
|
||||
* APIMethod: clone
|
||||
*
|
||||
* Parameters:
|
||||
* obj - {Object}
|
||||
*
|
||||
* Returns:
|
||||
* {<OpenLayers.Layer.WMTS>} An exact clone of this <OpenLayers.Layer.WMTS>
|
||||
*/
|
||||
clone: function(obj) {
|
||||
if (obj == null) {
|
||||
obj = new OpenLayers.Layer.WMTS(this.options);
|
||||
}
|
||||
//get all additions from superclasses
|
||||
obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]);
|
||||
// copy/set any non-init, non-simple values here
|
||||
return obj;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: getMatrixId
|
||||
* Determine the appropriate matrix id for the given map resolution.
|
||||
*/
|
||||
getMatrixId: function() {
|
||||
var id;
|
||||
var zoom = this.map.getZoom();
|
||||
if (!this.matrixIds || this.matrixIds.length === 0) {
|
||||
id = zoom;
|
||||
} else {
|
||||
// TODO: get appropriate matrix id given the map resolution
|
||||
id = this.matrixIds[zoom].identifier;
|
||||
}
|
||||
return id;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: getURL
|
||||
*
|
||||
* Parameters:
|
||||
* bounds - {<OpenLayers.Bounds>}
|
||||
*
|
||||
* Returns:
|
||||
* {String} A URL for the tile corresponding to the given bounds.
|
||||
*/
|
||||
getURL: function(bounds) {
|
||||
bounds = this.adjustBounds(bounds);
|
||||
var url = "";
|
||||
if (!this.tileFullExtent || this.tileFullExtent.intersectsBounds(bounds)) {
|
||||
|
||||
var res = this.map.getResolution();
|
||||
var zoom = this.map.getZoom();
|
||||
var center = bounds.getCenterLonLat();
|
||||
|
||||
var col = Math.floor((center.lon - this.tileOrigin.lon) / (res * this.tileSize.w));
|
||||
var row = Math.floor((this.tileOrigin.lat - center.lat) / (res * this.tileSize.h));
|
||||
|
||||
var matrixId = this.getMatrixId();
|
||||
|
||||
if (this.requestEncoding.toUpperCase() === "REST") {
|
||||
|
||||
// include 'version', 'layer' and 'style' in tile resource url
|
||||
var path = this.version + "/" + this.layer + "/" + this.style + "/";
|
||||
|
||||
// append optional dimension path elements
|
||||
if (this.dimensions) {
|
||||
for (var i=0; i<this.dimensions.length; i++) {
|
||||
if (this.params[this.dimensions[i]]) {
|
||||
path = path + this.params[this.dimensions[i]] + "/";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// append other required path elements
|
||||
path = path + this.matrixSet + "/" + matrixId + "/" + row + "/" + col + "." + this.formatSuffix;
|
||||
|
||||
if (this.url instanceof Array) {
|
||||
url = this.selectUrl(path, url)
|
||||
} else {
|
||||
url = this.url;
|
||||
}
|
||||
if (!url.match(/\/$/)) {
|
||||
url = url + "/";
|
||||
}
|
||||
url = url + path;
|
||||
|
||||
} else if (this.requestEncoding.toUpperCase() === "KVP") {
|
||||
|
||||
// assemble all required parameters
|
||||
var params = {
|
||||
SERVICE: "WMTS",
|
||||
REQUEST: "GetTile",
|
||||
VERSION: this.version,
|
||||
LAYER: this.layer,
|
||||
STYLE: this.style,
|
||||
TILEMATRIXSET: this.matrixSet,
|
||||
TILEMATRIX: matrixId,
|
||||
TILEROW: row,
|
||||
TILECOL: col,
|
||||
FORMAT: this.format
|
||||
};
|
||||
url = OpenLayers.Layer.Grid.prototype.getFullRequestString.apply(this, [params]);
|
||||
|
||||
}
|
||||
}
|
||||
return url;
|
||||
},
|
||||
|
||||
/**
|
||||
* APIMethod: mergeNewParams
|
||||
* Extend the existing layer <params> with new properties. Tiles will be
|
||||
* reloaded with updated params in the request.
|
||||
*
|
||||
* Parameters:
|
||||
* newParams - {Object} Properties to extend to existing <params>.
|
||||
*/
|
||||
mergeNewParams: function(newParams) {
|
||||
if (this.requestEncoding.toUpperCase() === "KVP") {
|
||||
return OpenLayers.Layer.Grid.prototype.mergeNewParams.apply(
|
||||
this, [OpenLayers.Util.upperCaseObject(newParams)]
|
||||
);
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: addTile
|
||||
* Create a tile, initialize it, and add it to the layer div.
|
||||
*
|
||||
* Parameters:
|
||||
* bounds - {<OpenLayers.Bounds>}
|
||||
* position - {<OpenLayers.Pixel>}
|
||||
*
|
||||
* Returns:
|
||||
* {<OpenLayers.Tile.Image>} The added OpenLayers.Tile.Image
|
||||
*/
|
||||
addTile: function(bounds,position) {
|
||||
return new OpenLayers.Tile.Image(this, position, bounds,
|
||||
null, this.tileSize);
|
||||
},
|
||||
|
||||
CLASS_NAME: "OpenLayers.Layer.WMTS"
|
||||
});
|
||||
Reference in New Issue
Block a user