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import ol from 'openlayers/dist/ol-debug';
import {FetchRequest} from '../../common/util/FetchRequest';
import SuperMap from '../../common/SuperMap';
import StyleUtils from '../core/StyleUtils';
import Logo from '../control/Logo';
ol.supermap = ol.supermap || {};
/**
* @class ol.supermap.WebMap
* @classdesc 对接iPortal/Online地图类。
* @param id - {string} iPortal|Online 地图ID
* @param options - {Object} 参数。如：<br>
* target - {string} 目标类型。<br>
* map - {ol.map} 地图对象。<br>
* server - {string} 服务地址。<br>
* credentialKey - {string} 凭证密钥。<br>
* credentialValue - {string} 凭证值。
* @extends ol.Observable{@linkdoc-openlayers/ol.Observable}
*/
export default class WebMap extends ol.Observable {
EventType = {
WEBMAPLOADEND: 'webmaploadend',
}
constructor(id, options) {
super();
this.id = id;
options = options || {};
this.target = options.target || 'map';
this.map = options.map;
this.server = options.server || 'http://www.supermapol.com';
this.credentialValue = options.credentialValue;
this.credentialKey = options.credentialKey || 'key';
this.load();
}
/**
* @function ol.supermap.WebMap.prototype.load
* @description 登陆窗口后添加地图图层
*/
load() {
if (this.server.indexOf('http://') < 0 && this.server.indexOf('https://') < 0) {
this.server = "http://" + this.server;
}
var mapUrl = this.server + '/web/maps/' + this.id + '.json';
if (this.credentialValue) {
mapUrl += ('?' + this.credentialKey + '=' + this.credentialValue);
}
var me = this;
FetchRequest.get(mapUrl).then(function (response) {
return response.json()
}).then(function (jsonObj) {
if (!jsonObj) {
return;
}
var layers = jsonObj.layers;
me.mapInfo = jsonObj;
me.createLayersByJson(layers);
})
}
/**
* @function ol.supermap.WebMap.prototype.createLayersByJson
* @description 通过json创建图层
* @param layersJson - {JSON} 图层的json信息
*/
createLayersByJson(layersJson) {
if (!ol.supermap.Util.isArray(layersJson)) {
return;
}
if (layersJson.length === 0) {
return;
}
var layerQueue = [];
var baseLayerJson;
for (var i = 0; i < layersJson.length; i++) {
var layerJson = layersJson[i];
layerJson["_originIndex"] = i;
var layerJsonType = layerJson.layerType = layerJson.layerType || "BASE_LAYER";
if (layerJsonType !== "BASE_LAYER") {
//如果图层不是底图，则先加到图层队列里面等待底图完成后再处理
layerQueue.unshift(layerJson);
continue;
} else {
baseLayerJson=layerJson;
}
}
var viewOptions=this._getViewOptions(baseLayerJson);
if (!this.map) {
var view = new ol.View(viewOptions);
var controls = ol.control.defaults({attributionOptions: {collapsed: false}})
.extend([new Logo()]);
this.map = new ol.Map({
target: this.target,
view: view,
controls: controls
});
var me =this;
this.map.once('postrender',function () {
me.createLayer(baseLayerJson.type, baseLayerJson);
//底图加载完成后开始处理图层队列里的图层
while (layerQueue.length > 0) {
var layerInfo = layerQueue.pop();
var type = layerInfo.type;
var layerType = layerInfo.layerType = layerInfo.layerType || "BASE_LAYER";
if (layerType !== "OVERLAY_LAYER") {
type = layerType;
}
me.createLayer(type, layerInfo);
}
me.dispatchEvent({type: ol.supermap.WebMap.EventType.WEBMAPLOADEND, value: this});
})
view.fit(viewOptions.extent);
}
};
/**
* @function ol.supermap.WebMap.prototype.addLayer
* @description 添加图层
* @param layer -{ol.layer.Vector} ol图层
* @param options -{Object} 创建图层所需参数
*/
addLayer(layer, options) {
return this.map.addLayer(layer);
}
toProjection(epsgCode, type, extent) {
if (epsgCode == -1000) {
return new ol.proj.Projection({
extent: extent,
units: 'm'
});
}
if (epsgCode === 910112 || epsgCode === 910102) {
return 'EPSG:3857';
}
if (epsgCode === 910111) {
return 'EPSG:3857'
//todo 火星mercator
}
if (epsgCode === 910101) {
return 'EPSG:4326'
//todo 火星
}
return 'EPSG:' + epsgCode;
}
/**
* @function ol.supermap.WebMap.prototype.getResolutionsFromScales
* @description 通过比例尺获取分辨率
* @param scales - {Array<number>} 排序比例尺数组
* @param dpi - {number}屏幕分辨率
* @param units - {string} 地图的单位
* @param datum - {SuperMap.Datum} 大地参照系类
*/
getResolutionsFromScales(scales, dpi, units, datum) {
var resolutions = [];
if (!scales || scales.length == 0) {
return resolutions;
}
for (var i = 0; i < scales.length; i++) {
resolutions.push(SuperMap.Util.GetResolutionFromScaleDpi(scales[i], dpi, units, datum))
}
return resolutions;
}
_getViewOptions(layerInfo) {
var prjCoordSys = layerInfo.prjCoordSys,
epsgCode = prjCoordSys && prjCoordSys.epsgCode || this.mapInfo.epsgCode,
center = this.mapInfo.center || layerInfo.center,
level = this.mapInfo.level || layerInfo.level,
bounds = layerInfo.bounds || this.mapInfo.extent,
extent = [bounds.leftBottom.x, bounds.leftBottom.y, bounds.rightTop.x, bounds.rightTop.y];
var projection = this.toProjection(epsgCode, prjCoordSys ? prjCoordSys.type : '', extent);
//var crs = this.createCRS(epsgCode, origin, resolution, boundsL);
return {
center: [center.x, center.y],
zoom: level,
projection: projection,
extent: extent
};
}
/**
* @function ol.supermap.WebMap.prototype.createLayer
* @description 创建图层
* @param type - {string} 图层类型
* @param layerInfo - {Object} 图层信息
*/
createLayer(type, layerInfo) {
var prjCoordSys = layerInfo.prjCoordSys,
epsgCode = prjCoordSys && prjCoordSys.epsgCode || this.mapInfo.epsgCode,
center = this.mapInfo.center || layerInfo.center,
level = this.mapInfo.level || layerInfo.level,
bounds = layerInfo.bounds || this.mapInfo.extent,
scales = layerInfo.scales,
opacity = layerInfo.opacity,
origin = [bounds.leftBottom.x, bounds.rightTop.y],
extent = [bounds.leftBottom.x, bounds.leftBottom.y, bounds.rightTop.x, bounds.rightTop.y];
var projection = this.toProjection(epsgCode, prjCoordSys ? prjCoordSys.type : '', extent);
//var crs = this.createCRS(epsgCode, origin, resolution, boundsL);
var viewOptions = {
center: [center.x, center.y],
zoom: level,
projection: projection,
extent: extent
};
var layer;
switch (type) {
case "SUPERMAP_REST" :
layer = new ol.layer.Tile({
source: new ol.source.TileSuperMapRest({
url: layerInfo.url,
transparent: true,
tileGrid: scales ? new ol.tilegrid.TileGrid({
extent: extent,
resolutions: this.getResolutionsFromScales(scales, 96)
}) : ol.source.TileSuperMapRest.createTileGrid(extent)
}),
projection: projection
});
break;
case "SUPERMAP_REST_VECTOR":
//ToDO
break;
case "TIANDITU_VEC":
case "TIANDITU_IMG":
case "TIANDITU_TER":
viewOptions.minZoom = 1;
viewOptions.zoom = 1 + viewOptions.zoom;
layer = this.createTiandituLayer(layerInfo, epsgCode);
break;
case "BAIDU":
viewOptions.resolutions = [131072 * 2, 131072, 65536, 32768, 16284, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1, 0.5];
viewOptions.zoom = 3 + viewOptions.zoom;
viewOptions.minZoom = 3;
layer = new ol.layer.Tile({
source: new ol.source.BaiduMap()
});
break;
case 'BING':
layer = new ol.layer.Tile({
source: new ol.source.BingMaps()
});
break;
case "WMS":
layer = this.createWmsLayer(layerInfo);
break;
case "WMTS":
var identifier = layerInfo.identifier;
var wellKnownScaleSet = identifier.split("_")[0];
var layerName = identifier.substring(identifier.indexOf("_") + 1);
var info = this.getWmtsResolutionsAndMatrixIds(wellKnownScaleSet, layerInfo.units, scales, origin, extent);
viewOptions.resolutions = info.resolutions;
layer = new ol.layer.Tile({
opacity: opacity,
source: new ol.source.WMTS({
url: layerInfo.url,
layer: layerName,
matrixSet: identifier,
format: 'image/png',
tileGrid: new ol.tilegrid.WMTS(info),
style: 'default'
})
})
break;
case "CLOUD":
viewOptions.zoom = 3 + viewOptions.zoom;
viewOptions.minZoom = 3;
layer = new ol.layer.Tile({
source: new ol.source.SuperMapCloud()
});
break;
case "MARKER_LAYER":
layer = this.createMarkersLayer(layerInfo);
break;
case "FEATURE_LAYER":
if (layerInfo.identifier == "ANIMATORVECTOR") {
//todo
} else if (layerInfo.identifier == "THEME") {
//todo
} else {
layer = this.createVectorLayer(layerInfo);
}
break;
default:
throw new Error('unSupported Layer Type');
break;
}
if (layer) {
this.addLayer(layer, viewOptions);
}
}
/**
* @function ol.supermap.WebMap.prototype.getWmtsResolutionsAndMatrixIds
* @description 获取WMTS图层的分辨率数组和标识矩阵
* @param wellKnownScaleSet - {Object} 图层的分辨率数据集
* @param units - {Object} 地图的单位元
* @param scales - {Array<number>} 排序比例尺数组
* @param mapOrigin - {Object} 原始地图
* @param mapExtent - {Object} 地图的程度
*/
getWmtsResolutionsAndMatrixIds(wellKnownScaleSet, units, scales, mapOrigin, mapExtent) {
var resolutions = ol.wellKnownScale.getResolutions(wellKnownScaleSet);
if (!resolutions && scales) {
for (var i = 0; i < scales.length; i++) {
resolutions.push(SuperMap.Util.getResolutionFromScaleDpi(scales[i], 90.71446714322, units));
}
}
var origin = ol.wellKnownScale.getOrigin(wellKnownScaleSet);
if (!origin) {
origin = mapOrigin;
}
var extent = ol.wellKnownScale.getExtent(wellKnownScaleSet);
if (!extent) {
extent = mapExtent;
}
var matrixIds = ol.wellKnownScale.generateMatrixIds(resolutions.length);
return {
resolutions: resolutions,
origin: origin,
matrixIds: matrixIds,
extent: extent
};
}
/**
* @function ol.supermap.WebMap.prototype.createTiandituLayer
* @description 创建天地图图层
* @param layerInfo - {Object} 图层信息
* @param epsgCode - {number} epsg编码
* @return {ol.layer.Tile} 获取天地图的图层
*/
createTiandituLayer(layerInfo, epsgCode) {
var proj = epsgCode === 4326 ? "c" : "w";
var tdtURL =
"http://t{0-7}.tianditu.com/{type}_{proj}/wmts?";
var type = layerInfo.type.split('_')[1].toLowerCase();
if (layerInfo.layerType === 'OVERLAY_LAYER') {
if (type == "vec") type = "cva"
if (type == "img") type = "cia"
if (type == "ter") type = "cta"
}
tdtURL = tdtURL.replace("{type}", type).replace("{proj}", proj);
var layer = new ol.layer.Tile({
source: new ol.source.Tianditu({
url: tdtURL,
matrixSet: proj,
layer: type,
projection: "EPSG:" + epsgCode
})
})
return layer;
}
/**
* @function ol.supermap.WebMap.prototype.createMarkersLayer
* @description 创建图标图层
* @param layerInfo - {Object} 图层信息
* @return {ol.layer.Vector}
*/
createMarkersLayer(layerInfo) {
var markers = layerInfo.markers || [];
//todo offset
var layer = new ol.layer.Vector({
style: function (feature) {
return StyleUtils.getStyleFromiPortalMarker(feature.getProperties().icon);
},
source: new ol.source.Vector({
features: (new ol.format.GeoJSON()).readFeatures(ol.supermap.Util.toGeoJSON(markers)),
wrapX: false
})
});
return layer;
}
/**
* @function ol.supermap.WebMap.prototype.createVectorLayer
* @description 创建矢量要素图层
* @param layerInfo - {Object} 图层信息
* @return {ol.layer.Vector}
*/
createVectorLayer(layerInfo) {
var style = layerInfo.style;
//opacity = layerInfo.opacity,
//isVisible = layerInfo.isVisible;
//todo readonly = layerInfo.readonly;
if (!layerInfo.url) {
var layer = new ol.layer.Vector({
style: function (feature) {
return StyleUtils.getStyleFromiPortalStyle(style, feature.getGeometry().getType(), feature.getProperties().style);
},
source: new ol.source.Vector({
features: (new ol.format.GeoJSON()).readFeatures(ol.supermap.Util.toGeoJSON(layerInfo.features)),
wrapX: false
})
});
return layer;
} else {
var url = layerInfo.url,
datasourceName = layerInfo.name,
datasets = layerInfo.features;
style = layerInfo.style;
var me = this;
var fun = function (serviceResult) {
var layer = new ol.layer.Vector({
style: function (feature) {
return StyleUtils.getStyleFromiPortalStyle(style, feature.getGeometry().getType(), feature.getProperties().style);
},
source: new ol.source.Vector({
features: (new ol.format.GeoJSON()).readFeatures(serviceResult.element.result),
wrapX: false
})
});
me.map.addLayer(layer);
};
for (var setNameIndex = 0; setNameIndex < datasets.length; setNameIndex++) {
var dataset = datasets[setNameIndex];
if (dataset.visible) {
var sqlParam = new SuperMap.GetFeaturesBySQLParameters({
queryParameter: {
name: dataset.name + "@" + datasourceName,
attributeFilter: "SMID >0"
},
datasetNames: [datasourceName + ":" + dataset.name]
});
new ol.supermap.GetFeaturesService(url).getFeaturesBySQL(sqlParam).on("complete", fun);
}
}
}
}
/**
* @function ol.supermap.WebMap.prototype.createWmsLayer
* @description 创建Wms图层
* @param layerInfo - {Object} 图层信息
* @return {ol.layer.Tile}
*/
createWmsLayer(layerInfo) {
var url = layerInfo.url,
opacity = layerInfo.opacity,
subLayers = layerInfo.subLayers;
if (!subLayers || subLayers === "undefined" || subLayers === "null") {
subLayers = "0";
}
return new ol.layer.Tile({
opacity: opacity,
source: new ol.source.TileWMS({
url: url,
params: {
'LAYERS': subLayers,
'FORMAT': 'image/png'
}
})
})
}
}
ol.supermap.WebMap = WebMap;
ol.supermap.WebMap.EventType = {
WEBMAPLOADEND: 'webmaploadend',
};