255 lines
7.3 KiB
JavaScript
255 lines
7.3 KiB
JavaScript
|
|
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you 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.
|
|
*/
|
|
|
|
var _echarts = require("echarts");
|
|
|
|
var zrUtil = _echarts.util;
|
|
var graphic = _echarts.graphic;
|
|
var matrix = _echarts.matrix;
|
|
|
|
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you 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.
|
|
*/
|
|
|
|
/* global BMap */
|
|
function BMapCoordSys(bmap, api) {
|
|
this._bmap = bmap;
|
|
this.dimensions = ['lng', 'lat'];
|
|
this._mapOffset = [0, 0];
|
|
this._api = api;
|
|
this._projection = new BMap.MercatorProjection();
|
|
}
|
|
|
|
BMapCoordSys.prototype.dimensions = ['lng', 'lat'];
|
|
|
|
BMapCoordSys.prototype.setZoom = function (zoom) {
|
|
this._zoom = zoom;
|
|
};
|
|
|
|
BMapCoordSys.prototype.setCenter = function (center) {
|
|
this._center = this._projection.lngLatToPoint(new BMap.Point(center[0], center[1]));
|
|
};
|
|
|
|
BMapCoordSys.prototype.setMapOffset = function (mapOffset) {
|
|
this._mapOffset = mapOffset;
|
|
};
|
|
|
|
BMapCoordSys.prototype.getBMap = function () {
|
|
return this._bmap;
|
|
};
|
|
|
|
BMapCoordSys.prototype.dataToPoint = function (data) {
|
|
var point = new BMap.Point(data[0], data[1]); // TODO mercator projection is toooooooo slow
|
|
// var mercatorPoint = this._projection.lngLatToPoint(point);
|
|
// var width = this._api.getZr().getWidth();
|
|
// var height = this._api.getZr().getHeight();
|
|
// var divider = Math.pow(2, 18 - 10);
|
|
// return [
|
|
// Math.round((mercatorPoint.x - this._center.x) / divider + width / 2),
|
|
// Math.round((this._center.y - mercatorPoint.y) / divider + height / 2)
|
|
// ];
|
|
|
|
var px = this._bmap.pointToOverlayPixel(point);
|
|
|
|
var mapOffset = this._mapOffset;
|
|
return [px.x - mapOffset[0], px.y - mapOffset[1]];
|
|
};
|
|
|
|
BMapCoordSys.prototype.pointToData = function (pt) {
|
|
var mapOffset = this._mapOffset;
|
|
|
|
var pt = this._bmap.overlayPixelToPoint({
|
|
x: pt[0] + mapOffset[0],
|
|
y: pt[1] + mapOffset[1]
|
|
});
|
|
|
|
return [pt.lng, pt.lat];
|
|
};
|
|
|
|
BMapCoordSys.prototype.getViewRect = function () {
|
|
var api = this._api;
|
|
return new graphic.BoundingRect(0, 0, api.getWidth(), api.getHeight());
|
|
};
|
|
|
|
BMapCoordSys.prototype.getRoamTransform = function () {
|
|
return matrix.create();
|
|
};
|
|
|
|
BMapCoordSys.prototype.prepareCustoms = function (data) {
|
|
var rect = this.getViewRect();
|
|
return {
|
|
coordSys: {
|
|
// The name exposed to user is always 'cartesian2d' but not 'grid'.
|
|
type: 'bmap',
|
|
x: rect.x,
|
|
y: rect.y,
|
|
width: rect.width,
|
|
height: rect.height
|
|
},
|
|
api: {
|
|
coord: zrUtil.bind(this.dataToPoint, this),
|
|
size: zrUtil.bind(dataToCoordSize, this)
|
|
}
|
|
};
|
|
};
|
|
|
|
function dataToCoordSize(dataSize, dataItem) {
|
|
dataItem = dataItem || [0, 0];
|
|
return zrUtil.map([0, 1], function (dimIdx) {
|
|
var val = dataItem[dimIdx];
|
|
var halfSize = dataSize[dimIdx] / 2;
|
|
var p1 = [];
|
|
var p2 = [];
|
|
p1[dimIdx] = val - halfSize;
|
|
p2[dimIdx] = val + halfSize;
|
|
p1[1 - dimIdx] = p2[1 - dimIdx] = dataItem[1 - dimIdx];
|
|
return Math.abs(this.dataToPoint(p1)[dimIdx] - this.dataToPoint(p2)[dimIdx]);
|
|
}, this);
|
|
}
|
|
|
|
var Overlay; // For deciding which dimensions to use when creating list data
|
|
|
|
BMapCoordSys.dimensions = BMapCoordSys.prototype.dimensions;
|
|
|
|
function createOverlayCtor() {
|
|
function Overlay(root) {
|
|
this._root = root;
|
|
}
|
|
|
|
Overlay.prototype = new BMap.Overlay();
|
|
/**
|
|
* 初始化
|
|
*
|
|
* @param {BMap.Map} map
|
|
* @override
|
|
*/
|
|
|
|
Overlay.prototype.initialize = function (map) {
|
|
map.getPanes().labelPane.appendChild(this._root);
|
|
return this._root;
|
|
};
|
|
/**
|
|
* @override
|
|
*/
|
|
|
|
|
|
Overlay.prototype.draw = function () {};
|
|
|
|
return Overlay;
|
|
}
|
|
|
|
BMapCoordSys.create = function (ecModel, api) {
|
|
var bmapCoordSys;
|
|
var root = api.getDom(); // TODO Dispose
|
|
|
|
ecModel.eachComponent('bmap', function (bmapModel) {
|
|
var painter = api.getZr().painter;
|
|
var viewportRoot = painter.getViewportRoot();
|
|
|
|
if (typeof BMap === 'undefined') {
|
|
throw new Error('BMap api is not loaded');
|
|
}
|
|
|
|
Overlay = Overlay || createOverlayCtor();
|
|
|
|
if (bmapCoordSys) {
|
|
throw new Error('Only one bmap component can exist');
|
|
}
|
|
|
|
if (!bmapModel.__bmap) {
|
|
// Not support IE8
|
|
var bmapRoot = root.querySelector('.ec-extension-bmap');
|
|
|
|
if (bmapRoot) {
|
|
// Reset viewport left and top, which will be changed
|
|
// in moving handler in BMapView
|
|
viewportRoot.style.left = '0px';
|
|
viewportRoot.style.top = '0px';
|
|
root.removeChild(bmapRoot);
|
|
}
|
|
|
|
bmapRoot = document.createElement('div');
|
|
bmapRoot.style.cssText = 'width:100%;height:100%'; // Not support IE8
|
|
|
|
bmapRoot.classList.add('ec-extension-bmap');
|
|
root.appendChild(bmapRoot); // initialize bmap
|
|
|
|
var mapOptions = bmapModel.get('mapOptions') || {}; // Not support `mapType`, use `bmap.setMapType(MapType)` instead.
|
|
|
|
delete mapOptions.mapType;
|
|
var bmap = bmapModel.__bmap = new BMap.Map(bmapRoot, mapOptions);
|
|
var overlay = new Overlay(viewportRoot);
|
|
bmap.addOverlay(overlay); // Override
|
|
|
|
painter.getViewportRootOffset = function () {
|
|
return {
|
|
offsetLeft: 0,
|
|
offsetTop: 0
|
|
};
|
|
};
|
|
}
|
|
|
|
var bmap = bmapModel.__bmap; // Set bmap options
|
|
// centerAndZoom before layout and render
|
|
|
|
var center = bmapModel.get('center');
|
|
var zoom = bmapModel.get('zoom');
|
|
|
|
if (center && zoom) {
|
|
var bmapCenter = bmap.getCenter();
|
|
var bmapZoom = bmap.getZoom();
|
|
var centerOrZoomChanged = bmapModel.centerOrZoomChanged([bmapCenter.lng, bmapCenter.lat], bmapZoom);
|
|
|
|
if (centerOrZoomChanged) {
|
|
var pt = new BMap.Point(center[0], center[1]);
|
|
bmap.centerAndZoom(pt, zoom);
|
|
}
|
|
}
|
|
|
|
bmapCoordSys = new BMapCoordSys(bmap, api);
|
|
bmapCoordSys.setMapOffset(bmapModel.__mapOffset || [0, 0]);
|
|
bmapCoordSys.setZoom(zoom);
|
|
bmapCoordSys.setCenter(center);
|
|
bmapModel.coordinateSystem = bmapCoordSys;
|
|
});
|
|
ecModel.eachSeries(function (seriesModel) {
|
|
if (seriesModel.get('coordinateSystem') === 'bmap') {
|
|
seriesModel.coordinateSystem = bmapCoordSys;
|
|
}
|
|
});
|
|
};
|
|
|
|
var _default = BMapCoordSys;
|
|
module.exports = _default; |