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Add ol.source.TileWMS#getGetFeatureInfoUrl

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This commit is contained in:
Éric Lemoine
2014-01-17 16:22:36 +01:00
parent f1fa0fcfc6
commit 3327f9223b
2 changed files with 170 additions and 68 deletions
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237
src/ol/source/tilewmssource.js
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@@ -67,6 +67,12 @@ ol.source.TileWMS = function(opt_options) {
*/
this.params_ = params;
/**
* @private
* @type {number}
*/
this.pixelRatio_ = NaN;
/**
* @private
* @type {boolean}
@@ -104,6 +110,79 @@ ol.source.TileWMS = function(opt_options) {
goog.inherits(ol.source.TileWMS, ol.source.TileImage);
/**
* Return the GetFeatureInfo URL for the passed coordinate, resolution, and
* projection. Return `undefined` if the GetFeatureInfo URL cannot be
* constructed.
* @param {ol.Coordinate} coordinate Coordinate.
* @param {number} resolution Resolution.
* @param {ol.proj.Projection} projection Projection.
* @param {!Object} params GetFeatureInfo params. `INFO_FORMAT` at least should
* be provided. If `QUERY_LAYERS` is not provided then the layers specified
* in the `LAYERS` parameter will be used. `VERSION` should not be
* specified here.
* @return {string|undefined} GetFeatureInfo URL.
*/
ol.source.TileWMS.prototype.getGetFeatureInfoUrl =
function(coordinate, resolution, projection, params) {
goog.asserts.assert(!('VERSION' in params));
var pixelRatio = this.pixelRatio_;
if (isNaN(this.pixelRatio_)) {
return undefined;
}
var tileGrid = this.getTileGrid();
if (goog.isNull(tileGrid)) {
tileGrid = this.getTileGridForProjection(projection);
}
var tileCoord = tileGrid.getTileCoordForCoordAndResolution(
coordinate, resolution);
if (tileGrid.getResolutions().length <= tileCoord.z) {
return undefined;
}
var tileResolution = tileGrid.getResolution(tileCoord.z);
var tileExtent = tileGrid.getTileCoordExtent(
tileCoord, this.tmpExtent_);
var tileSize = tileGrid.getTileSize(tileCoord.z);
var gutter = this.gutter_;
if (gutter !== 0) {
tileSize += 2 * gutter;
tileExtent = ol.extent.buffer(tileExtent,
tileResolution * gutter, tileExtent);
}
if (pixelRatio != 1) {
tileSize = (tileSize * pixelRatio + 0.5) | 0;
}
var baseParams = {
'SERVICE': 'WMS',
'VERSION': ol.source.wms.DEFAULT_VERSION,
'REQUEST': 'GetFeatureInfo',
'FORMAT': 'image/png',
'TRANSPARENT': true,
'QUERY_LAYERS': goog.object.get(this.params_, 'LAYERS')
};
goog.object.extend(baseParams, this.params_, params);
var x = Math.floor((coordinate[0] - tileExtent[0]) /
(tileResolution / pixelRatio));
var y = Math.floor((tileExtent[3] - coordinate[1]) /
(tileResolution / pixelRatio));
goog.object.set(baseParams, this.v13_ ? 'I' : 'X', x);
goog.object.set(baseParams, this.v13_ ? 'J' : 'Y', y);
return this.getRequestUrl_(tileCoord, tileSize, tileExtent,
pixelRatio, projection, baseParams);
};
/**
* @inheritDoc
*/
@@ -131,6 +210,76 @@ ol.source.TileWMS.prototype.getParams = function() {
};
/**
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {number} tileSize Tile size.
* @param {ol.Extent} tileExtent Tile extent.
* @param {number} pixelRatio Pixel ratio.
* @param {ol.proj.Projection} projection Projection.
* @param {Object} params Params.
* @return {string|undefined} Request URL.
* @private
*/
ol.source.TileWMS.prototype.getRequestUrl_ =
function(tileCoord, tileSize, tileExtent,
pixelRatio, projection, params) {
var urls = this.urls_;
if (!goog.isDef(urls) || goog.array.isEmpty(urls)) {
return undefined;
}
goog.object.set(params, 'WIDTH', tileSize);
goog.object.set(params, 'HEIGHT', tileSize);
params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
if (!('STYLES' in this.params_)) {
goog.object.set(params, 'STYLES', new String(''));
}
if (pixelRatio != 1) {
switch (this.serverType_) {
case ol.source.wms.ServerType.GEOSERVER:
var dpi = (90 * pixelRatio + 0.5) | 0;
goog.object.set(params, 'FORMAT_OPTIONS', 'dpi:' + dpi);
break;
case ol.source.wms.ServerType.MAPSERVER:
goog.object.set(params, 'MAP_RESOLUTION', 90 * pixelRatio);
break;
case ol.source.wms.ServerType.QGIS:
goog.object.set(params, 'DPI', 90 * pixelRatio);
break;
default:
goog.asserts.fail();
break;
}
}
var axisOrientation = projection.getAxisOrientation();
var bbox = tileExtent;
if (this.v13_ && axisOrientation.substr(0, 2) == 'ne') {
var tmp;
tmp = tileExtent[0];
bbox[0] = tileExtent[1];
bbox[1] = tmp;
tmp = tileExtent[2];
bbox[2] = tileExtent[3];
bbox[3] = tmp;
}
goog.object.set(params, 'BBOX', bbox.join(','));
var url;
if (urls.length == 1) {
url = urls[0];
} else {
var index = goog.math.modulo(tileCoord.hash(), this.urls_.length);
url = urls[index];
}
return goog.uri.utils.appendParamsFromMap(url, params);
};
/**
* @param {number} z Z.
* @param {number} pixelRatio Pixel ratio.
@@ -165,17 +314,12 @@ ol.source.TileWMS.prototype.resetCoordKeyPrefix_ = function() {
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {number} pixelRatio Pixel ratio.
* @param {ol.proj.Projection} projection Projection.
* @private
* @return {string|undefined} Tile URL.
* @private
*/
ol.source.TileWMS.prototype.tileUrlFunction_ =
function(tileCoord, pixelRatio, projection) {
var urls = this.urls_;
if (!goog.isDef(urls) || goog.array.isEmpty(urls)) {
return undefined;
}
var tileGrid = this.getTileGrid();
if (goog.isNull(tileGrid)) {
tileGrid = this.getTileGridForProjection(projection);
@@ -185,80 +329,37 @@ ol.source.TileWMS.prototype.tileUrlFunction_ =
return undefined;
}
var tileExtent = tileGrid.getTileCoordExtent(tileCoord);
var tileResolution = tileGrid.getResolution(tileCoord.z);
var tileExtent = tileGrid.getTileCoordExtent(
tileCoord, this.tmpExtent_);
var tileSize = tileGrid.getTileSize(tileCoord.z);
var params = {
var gutter = this.gutter_;
if (gutter !== 0) {
tileSize += 2 * gutter;
tileExtent = ol.extent.buffer(tileExtent,
tileResolution * gutter, tileExtent);
}
if (pixelRatio != 1) {
tileSize = (tileSize * pixelRatio + 0.5) | 0;
}
var baseParams = {
'SERVICE': 'WMS',
'VERSION': ol.source.wms.DEFAULT_VERSION,
'REQUEST': 'GetMap',
'FORMAT': 'image/png',
'TRANSPARENT': true
};
goog.object.extend(params, this.params_);
goog.object.extend(baseParams, this.params_);
var tileResolution = tileGrid.getResolution(tileCoord.z);
if (pixelRatio != 1 && (!this.hidpi_ || !goog.isDef(this.serverType_))) {
pixelRatio = 1;
}
var tileSize = tileGrid.getTileSize(tileCoord.z);
var gutter = this.gutter_;
if (gutter !== 0) {
tileSize += 2 * gutter;
tileExtent =
ol.extent.buffer(tileExtent, tileResolution * gutter, this.tmpExtent_);
}
if (pixelRatio != 1) {
tileSize = (tileSize * pixelRatio + 0.5) | 0;
}
goog.object.set(params, 'WIDTH', tileSize);
goog.object.set(params, 'HEIGHT', tileSize);
params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
if (!('STYLES' in this.params_)) {
goog.object.set(params, 'STYLES', new String(''));
}
if (pixelRatio != 1) {
switch (this.serverType_) {
case ol.source.wms.ServerType.GEOSERVER:
var dpi = (90 * pixelRatio + 0.5) | 0;
goog.object.set(params, 'FORMAT_OPTIONS', 'dpi:' + dpi);
break;
case ol.source.wms.ServerType.MAPSERVER:
goog.object.set(params, 'MAP_RESOLUTION', 90 * pixelRatio);
break;
case ol.source.wms.ServerType.QGIS:
goog.object.set(params, 'DPI', 90 * pixelRatio);
break;
default:
goog.asserts.fail();
break;
}
}
var axisOrientation = projection.getAxisOrientation();
var bbox;
if (this.v13_ && axisOrientation.substr(0, 2) == 'ne') {
bbox = this.tmpExtent_;
bbox[0] = tileExtent[1];
bbox[1] = tileExtent[0];
bbox[2] = tileExtent[3];
bbox[3] = tileExtent[2];
} else {
bbox = tileExtent;
}
goog.object.set(params, 'BBOX', bbox.join(','));
var url;
if (urls.length == 1) {
url = urls[0];
} else {
var index = goog.math.modulo(tileCoord.hash(), this.urls_.length);
url = urls[index];
}
return goog.uri.utils.appendParamsFromMap(url, params);
this.pixelRatio_ = pixelRatio;
return this.getRequestUrl_(tileCoord, tileSize, tileExtent,
pixelRatio, projection, baseParams);
};