703 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			703 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| 
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| /*
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| * Licensed to the Apache Software Foundation (ASF) under one
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| * or more contributor license agreements.  See the NOTICE file
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| * distributed with this work for additional information
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| * regarding copyright ownership.  The ASF licenses this file
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| * to you under the Apache License, Version 2.0 (the
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| * "License"); you may not use this file except in compliance
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| * with the License.  You may obtain a copy of the License at
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| *
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| *   http://www.apache.org/licenses/LICENSE-2.0
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| *
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| * Unless required by applicable law or agreed to in writing,
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| * software distributed under the License is distributed on an
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| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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| * KIND, either express or implied.  See the License for the
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| * specific language governing permissions and limitations
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| * under the License.
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| */
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| 
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| var _config = require("../config");
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| 
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| var __DEV__ = _config.__DEV__;
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| 
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| var zrUtil = require("zrender/lib/core/util");
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| 
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| var graphicUtil = require("../util/graphic");
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| 
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| var _labelHelper = require("./helper/labelHelper");
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| 
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| var getDefaultLabel = _labelHelper.getDefaultLabel;
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| 
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| var createListFromArray = require("./helper/createListFromArray");
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| 
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| var _barGrid = require("../layout/barGrid");
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| 
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| var getLayoutOnAxis = _barGrid.getLayoutOnAxis;
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| 
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| var DataDiffer = require("../data/DataDiffer");
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| 
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| var SeriesModel = require("../model/Series");
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| 
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| var Model = require("../model/Model");
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| 
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| var ChartView = require("../view/Chart");
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| 
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| var _createClipPathFromCoordSys = require("./helper/createClipPathFromCoordSys");
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| 
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| var createClipPath = _createClipPathFromCoordSys.createClipPath;
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| 
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| var prepareCartesian2d = require("../coord/cartesian/prepareCustom");
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| 
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| var prepareGeo = require("../coord/geo/prepareCustom");
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| 
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| var prepareSingleAxis = require("../coord/single/prepareCustom");
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| 
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| var preparePolar = require("../coord/polar/prepareCustom");
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| 
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| var prepareCalendar = require("../coord/calendar/prepareCustom");
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| 
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| /*
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| * Licensed to the Apache Software Foundation (ASF) under one
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| * or more contributor license agreements.  See the NOTICE file
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| * distributed with this work for additional information
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| * regarding copyright ownership.  The ASF licenses this file
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| * to you under the Apache License, Version 2.0 (the
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| * "License"); you may not use this file except in compliance
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| * with the License.  You may obtain a copy of the License at
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| *
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| *   http://www.apache.org/licenses/LICENSE-2.0
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| *
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| * Unless required by applicable law or agreed to in writing,
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| * software distributed under the License is distributed on an
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| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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| * KIND, either express or implied.  See the License for the
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| * specific language governing permissions and limitations
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| * under the License.
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| */
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| var CACHED_LABEL_STYLE_PROPERTIES = graphicUtil.CACHED_LABEL_STYLE_PROPERTIES;
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| var ITEM_STYLE_NORMAL_PATH = ['itemStyle'];
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| var ITEM_STYLE_EMPHASIS_PATH = ['emphasis', 'itemStyle'];
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| var LABEL_NORMAL = ['label'];
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| var LABEL_EMPHASIS = ['emphasis', 'label']; // Use prefix to avoid index to be the same as el.name,
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| // which will cause weird udpate animation.
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| 
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| var GROUP_DIFF_PREFIX = 'e\0\0';
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| /**
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|  * To reduce total package size of each coordinate systems, the modules `prepareCustom`
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|  * of each coordinate systems are not required by each coordinate systems directly, but
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|  * required by the module `custom`.
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|  *
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|  * prepareInfoForCustomSeries {Function}: optional
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|  *     @return {Object} {coordSys: {...}, api: {
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|  *         coord: function (data, clamp) {}, // return point in global.
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|  *         size: function (dataSize, dataItem) {} // return size of each axis in coordSys.
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|  *     }}
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|  */
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| 
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| var prepareCustoms = {
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|   cartesian2d: prepareCartesian2d,
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|   geo: prepareGeo,
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|   singleAxis: prepareSingleAxis,
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|   polar: preparePolar,
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|   calendar: prepareCalendar
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| }; // ------
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| // Model
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| // ------
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| 
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| SeriesModel.extend({
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|   type: 'series.custom',
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|   dependencies: ['grid', 'polar', 'geo', 'singleAxis', 'calendar'],
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|   defaultOption: {
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|     coordinateSystem: 'cartesian2d',
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|     // Can be set as 'none'
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|     zlevel: 0,
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|     z: 2,
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|     legendHoverLink: true,
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|     useTransform: true,
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|     // Custom series will not clip by default.
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|     // Some case will use custom series to draw label
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|     // For example https://echarts.apache.org/examples/en/editor.html?c=custom-gantt-flight
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|     // Only works on polar and cartesian2d coordinate system.
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|     clip: false // Cartesian coordinate system
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|     // xAxisIndex: 0,
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|     // yAxisIndex: 0,
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|     // Polar coordinate system
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|     // polarIndex: 0,
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|     // Geo coordinate system
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|     // geoIndex: 0,
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|     // label: {}
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|     // itemStyle: {}
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| 
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|   },
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| 
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|   /**
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|    * @override
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|    */
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|   getInitialData: function (option, ecModel) {
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|     return createListFromArray(this.getSource(), this);
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|   },
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| 
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|   /**
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|    * @override
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|    */
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|   getDataParams: function (dataIndex, dataType, el) {
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|     var params = SeriesModel.prototype.getDataParams.apply(this, arguments);
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|     el && (params.info = el.info);
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|     return params;
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|   }
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| }); // -----
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| // View
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| // -----
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| 
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| ChartView.extend({
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|   type: 'custom',
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| 
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|   /**
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|    * @private
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|    * @type {module:echarts/data/List}
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|    */
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|   _data: null,
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| 
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|   /**
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|    * @override
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|    */
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|   render: function (customSeries, ecModel, api, payload) {
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|     var oldData = this._data;
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|     var data = customSeries.getData();
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|     var group = this.group;
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|     var renderItem = makeRenderItem(customSeries, data, ecModel, api); // By default, merge mode is applied. In most cases, custom series is
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|     // used in the scenario that data amount is not large but graphic elements
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|     // is complicated, where merge mode is probably necessary for optimization.
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|     // For example, reuse graphic elements and only update the transform when
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|     // roam or data zoom according to `actionType`.
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| 
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|     data.diff(oldData).add(function (newIdx) {
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|       createOrUpdate(null, newIdx, renderItem(newIdx, payload), customSeries, group, data);
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|     }).update(function (newIdx, oldIdx) {
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|       var el = oldData.getItemGraphicEl(oldIdx);
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|       createOrUpdate(el, newIdx, renderItem(newIdx, payload), customSeries, group, data);
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|     }).remove(function (oldIdx) {
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|       var el = oldData.getItemGraphicEl(oldIdx);
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|       el && group.remove(el);
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|     }).execute(); // Do clipping
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| 
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|     var clipPath = customSeries.get('clip', true) ? createClipPath(customSeries.coordinateSystem, false, customSeries) : null;
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| 
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|     if (clipPath) {
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|       group.setClipPath(clipPath);
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|     } else {
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|       group.removeClipPath();
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|     }
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| 
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|     this._data = data;
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|   },
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|   incrementalPrepareRender: function (customSeries, ecModel, api) {
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|     this.group.removeAll();
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|     this._data = null;
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|   },
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|   incrementalRender: function (params, customSeries, ecModel, api, payload) {
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|     var data = customSeries.getData();
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|     var renderItem = makeRenderItem(customSeries, data, ecModel, api);
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| 
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|     function setIncrementalAndHoverLayer(el) {
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|       if (!el.isGroup) {
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|         el.incremental = true;
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|         el.useHoverLayer = true;
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|       }
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|     }
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| 
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|     for (var idx = params.start; idx < params.end; idx++) {
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|       var el = createOrUpdate(null, idx, renderItem(idx, payload), customSeries, this.group, data);
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|       el.traverse(setIncrementalAndHoverLayer);
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|     }
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|   },
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| 
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|   /**
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|    * @override
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|    */
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|   dispose: zrUtil.noop,
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| 
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|   /**
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|    * @override
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|    */
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|   filterForExposedEvent: function (eventType, query, targetEl, packedEvent) {
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|     var elementName = query.element;
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| 
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|     if (elementName == null || targetEl.name === elementName) {
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|       return true;
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|     } // Enable to give a name on a group made by `renderItem`, and listen
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|     // events that triggerd by its descendents.
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| 
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| 
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|     while ((targetEl = targetEl.parent) && targetEl !== this.group) {
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|       if (targetEl.name === elementName) {
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|         return true;
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|       }
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|     }
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| 
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|     return false;
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|   }
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| });
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| 
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| function createEl(elOption) {
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|   var graphicType = elOption.type;
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|   var el; // Those graphic elements are not shapes. They should not be
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|   // overwritten by users, so do them first.
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| 
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|   if (graphicType === 'path') {
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|     var shape = elOption.shape; // Using pathRect brings convenience to users sacle svg path.
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| 
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|     var pathRect = shape.width != null && shape.height != null ? {
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|       x: shape.x || 0,
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|       y: shape.y || 0,
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|       width: shape.width,
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|       height: shape.height
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|     } : null;
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|     var pathData = getPathData(shape); // Path is also used for icon, so layout 'center' by default.
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| 
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|     el = graphicUtil.makePath(pathData, null, pathRect, shape.layout || 'center');
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|     el.__customPathData = pathData;
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|   } else if (graphicType === 'image') {
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|     el = new graphicUtil.Image({});
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|     el.__customImagePath = elOption.style.image;
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|   } else if (graphicType === 'text') {
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|     el = new graphicUtil.Text({});
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|     el.__customText = elOption.style.text;
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|   } else if (graphicType === 'group') {
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|     el = new graphicUtil.Group();
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|   } else if (graphicType === 'compoundPath') {
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|     throw new Error('"compoundPath" is not supported yet.');
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|   } else {
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|     var Clz = graphicUtil.getShapeClass(graphicType);
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|     el = new Clz();
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|   }
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| 
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|   el.__customGraphicType = graphicType;
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|   el.name = elOption.name;
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|   return el;
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| }
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| 
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| function updateEl(el, dataIndex, elOption, animatableModel, data, isInit, isRoot) {
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|   var transitionProps = {};
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|   var elOptionStyle = elOption.style || {};
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|   elOption.shape && (transitionProps.shape = zrUtil.clone(elOption.shape));
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|   elOption.position && (transitionProps.position = elOption.position.slice());
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|   elOption.scale && (transitionProps.scale = elOption.scale.slice());
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|   elOption.origin && (transitionProps.origin = elOption.origin.slice());
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|   elOption.rotation && (transitionProps.rotation = elOption.rotation);
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| 
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|   if (el.type === 'image' && elOption.style) {
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|     var targetStyle = transitionProps.style = {};
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|     zrUtil.each(['x', 'y', 'width', 'height'], function (prop) {
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|       prepareStyleTransition(prop, targetStyle, elOptionStyle, el.style, isInit);
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|     });
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|   }
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| 
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|   if (el.type === 'text' && elOption.style) {
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|     var targetStyle = transitionProps.style = {};
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|     zrUtil.each(['x', 'y'], function (prop) {
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|       prepareStyleTransition(prop, targetStyle, elOptionStyle, el.style, isInit);
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|     }); // Compatible with previous: both support
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|     // textFill and fill, textStroke and stroke in 'text' element.
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| 
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|     !elOptionStyle.hasOwnProperty('textFill') && elOptionStyle.fill && (elOptionStyle.textFill = elOptionStyle.fill);
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|     !elOptionStyle.hasOwnProperty('textStroke') && elOptionStyle.stroke && (elOptionStyle.textStroke = elOptionStyle.stroke);
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|   }
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| 
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|   if (el.type !== 'group') {
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|     el.useStyle(elOptionStyle); // Init animation.
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| 
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|     if (isInit) {
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|       el.style.opacity = 0;
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|       var targetOpacity = elOptionStyle.opacity;
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|       targetOpacity == null && (targetOpacity = 1);
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|       graphicUtil.initProps(el, {
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|         style: {
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|           opacity: targetOpacity
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|         }
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|       }, animatableModel, dataIndex);
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|     }
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|   }
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| 
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|   if (isInit) {
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|     el.attr(transitionProps);
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|   } else {
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|     graphicUtil.updateProps(el, transitionProps, animatableModel, dataIndex);
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|   } // Merge by default.
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|   // z2 must not be null/undefined, otherwise sort error may occur.
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| 
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| 
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|   elOption.hasOwnProperty('z2') && el.attr('z2', elOption.z2 || 0);
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|   elOption.hasOwnProperty('silent') && el.attr('silent', elOption.silent);
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|   elOption.hasOwnProperty('invisible') && el.attr('invisible', elOption.invisible);
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|   elOption.hasOwnProperty('ignore') && el.attr('ignore', elOption.ignore); // `elOption.info` enables user to mount some info on
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|   // elements and use them in event handlers.
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|   // Update them only when user specified, otherwise, remain.
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| 
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|   elOption.hasOwnProperty('info') && el.attr('info', elOption.info); // If `elOption.styleEmphasis` is `false`, remove hover style. The
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|   // logic is ensured by `graphicUtil.setElementHoverStyle`.
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| 
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|   var styleEmphasis = elOption.styleEmphasis; // hoverStyle should always be set here, because if the hover style
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|   // may already be changed, where the inner cache should be reset.
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| 
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|   graphicUtil.setElementHoverStyle(el, styleEmphasis);
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| 
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|   if (isRoot) {
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|     graphicUtil.setAsHighDownDispatcher(el, styleEmphasis !== false);
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|   }
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| }
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| 
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| function prepareStyleTransition(prop, targetStyle, elOptionStyle, oldElStyle, isInit) {
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|   if (elOptionStyle[prop] != null && !isInit) {
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|     targetStyle[prop] = elOptionStyle[prop];
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|     elOptionStyle[prop] = oldElStyle[prop];
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|   }
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| }
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| 
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| function makeRenderItem(customSeries, data, ecModel, api) {
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|   var renderItem = customSeries.get('renderItem');
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|   var coordSys = customSeries.coordinateSystem;
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|   var prepareResult = {};
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| 
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|   if (coordSys) {
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|     prepareResult = coordSys.prepareCustoms ? coordSys.prepareCustoms() : prepareCustoms[coordSys.type](coordSys);
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|   }
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| 
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|   var userAPI = zrUtil.defaults({
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|     getWidth: api.getWidth,
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|     getHeight: api.getHeight,
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|     getZr: api.getZr,
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|     getDevicePixelRatio: api.getDevicePixelRatio,
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|     value: value,
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|     style: style,
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|     styleEmphasis: styleEmphasis,
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|     visual: visual,
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|     barLayout: barLayout,
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|     currentSeriesIndices: currentSeriesIndices,
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|     font: font
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|   }, prepareResult.api || {});
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|   var userParams = {
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|     // The life cycle of context: current round of rendering.
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|     // The global life cycle is probably not necessary, because
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|     // user can store global status by themselves.
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|     context: {},
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|     seriesId: customSeries.id,
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|     seriesName: customSeries.name,
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|     seriesIndex: customSeries.seriesIndex,
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|     coordSys: prepareResult.coordSys,
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|     dataInsideLength: data.count(),
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|     encode: wrapEncodeDef(customSeries.getData())
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|   }; // Do not support call `api` asynchronously without dataIndexInside input.
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| 
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|   var currDataIndexInside;
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|   var currDirty = true;
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|   var currItemModel;
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|   var currLabelNormalModel;
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|   var currLabelEmphasisModel;
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|   var currVisualColor;
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|   return function (dataIndexInside, payload) {
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|     currDataIndexInside = dataIndexInside;
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|     currDirty = true;
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|     return renderItem && renderItem(zrUtil.defaults({
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|       dataIndexInside: dataIndexInside,
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|       dataIndex: data.getRawIndex(dataIndexInside),
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|       // Can be used for optimization when zoom or roam.
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|       actionType: payload ? payload.type : null
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|     }, userParams), userAPI);
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|   }; // Do not update cache until api called.
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| 
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|   function updateCache(dataIndexInside) {
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|     dataIndexInside == null && (dataIndexInside = currDataIndexInside);
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| 
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|     if (currDirty) {
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|       currItemModel = data.getItemModel(dataIndexInside);
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|       currLabelNormalModel = currItemModel.getModel(LABEL_NORMAL);
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|       currLabelEmphasisModel = currItemModel.getModel(LABEL_EMPHASIS);
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|       currVisualColor = data.getItemVisual(dataIndexInside, 'color');
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|       currDirty = false;
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|     }
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|   }
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|   /**
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|    * @public
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|    * @param {number|string} dim
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|    * @param {number} [dataIndexInside=currDataIndexInside]
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|    * @return {number|string} value
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|    */
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| 
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| 
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|   function value(dim, dataIndexInside) {
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|     dataIndexInside == null && (dataIndexInside = currDataIndexInside);
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|     return data.get(data.getDimension(dim || 0), dataIndexInside);
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|   }
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|   /**
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|    * By default, `visual` is applied to style (to support visualMap).
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|    * `visual.color` is applied at `fill`. If user want apply visual.color on `stroke`,
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|    * it can be implemented as:
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|    * `api.style({stroke: api.visual('color'), fill: null})`;
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|    * @public
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|    * @param {Object} [extra]
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|    * @param {number} [dataIndexInside=currDataIndexInside]
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|    */
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| 
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| 
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|   function style(extra, dataIndexInside) {
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|     dataIndexInside == null && (dataIndexInside = currDataIndexInside);
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|     updateCache(dataIndexInside);
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|     var itemStyle = currItemModel.getModel(ITEM_STYLE_NORMAL_PATH).getItemStyle();
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|     currVisualColor != null && (itemStyle.fill = currVisualColor);
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|     var opacity = data.getItemVisual(dataIndexInside, 'opacity');
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|     opacity != null && (itemStyle.opacity = opacity);
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|     var labelModel = extra ? applyExtraBefore(extra, currLabelNormalModel) : currLabelNormalModel;
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|     graphicUtil.setTextStyle(itemStyle, labelModel, null, {
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|       autoColor: currVisualColor,
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|       isRectText: true
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|     });
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|     itemStyle.text = labelModel.getShallow('show') ? zrUtil.retrieve2(customSeries.getFormattedLabel(dataIndexInside, 'normal'), getDefaultLabel(data, dataIndexInside)) : null;
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|     extra && applyExtraAfter(itemStyle, extra);
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|     return itemStyle;
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|   }
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|   /**
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|    * @public
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|    * @param {Object} [extra]
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|    * @param {number} [dataIndexInside=currDataIndexInside]
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|    */
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| 
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| 
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|   function styleEmphasis(extra, dataIndexInside) {
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|     dataIndexInside == null && (dataIndexInside = currDataIndexInside);
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|     updateCache(dataIndexInside);
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|     var itemStyle = currItemModel.getModel(ITEM_STYLE_EMPHASIS_PATH).getItemStyle();
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|     var labelModel = extra ? applyExtraBefore(extra, currLabelEmphasisModel) : currLabelEmphasisModel;
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|     graphicUtil.setTextStyle(itemStyle, labelModel, null, {
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|       isRectText: true
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|     }, true);
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|     itemStyle.text = labelModel.getShallow('show') ? zrUtil.retrieve3(customSeries.getFormattedLabel(dataIndexInside, 'emphasis'), customSeries.getFormattedLabel(dataIndexInside, 'normal'), getDefaultLabel(data, dataIndexInside)) : null;
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|     extra && applyExtraAfter(itemStyle, extra);
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|     return itemStyle;
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|   }
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|   /**
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|    * @public
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|    * @param {string} visualType
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|    * @param {number} [dataIndexInside=currDataIndexInside]
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|    */
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| 
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| 
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|   function visual(visualType, dataIndexInside) {
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|     dataIndexInside == null && (dataIndexInside = currDataIndexInside);
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|     return data.getItemVisual(dataIndexInside, visualType);
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|   }
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|   /**
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|    * @public
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|    * @param {number} opt.count Positive interger.
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|    * @param {number} [opt.barWidth]
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|    * @param {number} [opt.barMaxWidth]
 | |
|    * @param {number} [opt.barMinWidth]
 | |
|    * @param {number} [opt.barGap]
 | |
|    * @param {number} [opt.barCategoryGap]
 | |
|    * @return {Object} {width, offset, offsetCenter} is not support, return undefined.
 | |
|    */
 | |
| 
 | |
| 
 | |
|   function barLayout(opt) {
 | |
|     if (coordSys.getBaseAxis) {
 | |
|       var baseAxis = coordSys.getBaseAxis();
 | |
|       return getLayoutOnAxis(zrUtil.defaults({
 | |
|         axis: baseAxis
 | |
|       }, opt), api);
 | |
|     }
 | |
|   }
 | |
|   /**
 | |
|    * @public
 | |
|    * @return {Array.<number>}
 | |
|    */
 | |
| 
 | |
| 
 | |
|   function currentSeriesIndices() {
 | |
|     return ecModel.getCurrentSeriesIndices();
 | |
|   }
 | |
|   /**
 | |
|    * @public
 | |
|    * @param {Object} opt
 | |
|    * @param {string} [opt.fontStyle]
 | |
|    * @param {number} [opt.fontWeight]
 | |
|    * @param {number} [opt.fontSize]
 | |
|    * @param {string} [opt.fontFamily]
 | |
|    * @return {string} font string
 | |
|    */
 | |
| 
 | |
| 
 | |
|   function font(opt) {
 | |
|     return graphicUtil.getFont(opt, ecModel);
 | |
|   }
 | |
| }
 | |
| 
 | |
| function wrapEncodeDef(data) {
 | |
|   var encodeDef = {};
 | |
|   zrUtil.each(data.dimensions, function (dimName, dataDimIndex) {
 | |
|     var dimInfo = data.getDimensionInfo(dimName);
 | |
| 
 | |
|     if (!dimInfo.isExtraCoord) {
 | |
|       var coordDim = dimInfo.coordDim;
 | |
|       var dataDims = encodeDef[coordDim] = encodeDef[coordDim] || [];
 | |
|       dataDims[dimInfo.coordDimIndex] = dataDimIndex;
 | |
|     }
 | |
|   });
 | |
|   return encodeDef;
 | |
| }
 | |
| 
 | |
| function createOrUpdate(el, dataIndex, elOption, animatableModel, group, data) {
 | |
|   el = doCreateOrUpdate(el, dataIndex, elOption, animatableModel, group, data, true);
 | |
|   el && data.setItemGraphicEl(dataIndex, el);
 | |
|   return el;
 | |
| }
 | |
| 
 | |
| function doCreateOrUpdate(el, dataIndex, elOption, animatableModel, group, data, isRoot) {
 | |
|   // [Rule]
 | |
|   // By default, follow merge mode.
 | |
|   //     (It probably brings benifit for performance in some cases of large data, where
 | |
|   //     user program can be optimized to that only updated props needed to be re-calculated,
 | |
|   //     or according to `actionType` some calculation can be skipped.)
 | |
|   // If `renderItem` returns `null`/`undefined`/`false`, remove the previous el if existing.
 | |
|   //     (It seems that violate the "merge" principle, but most of users probably intuitively
 | |
|   //     regard "return;" as "show nothing element whatever", so make a exception to meet the
 | |
|   //     most cases.)
 | |
|   var simplyRemove = !elOption; // `null`/`undefined`/`false`
 | |
| 
 | |
|   elOption = elOption || {};
 | |
|   var elOptionType = elOption.type;
 | |
|   var elOptionShape = elOption.shape;
 | |
|   var elOptionStyle = elOption.style;
 | |
| 
 | |
|   if (el && (simplyRemove // || elOption.$merge === false
 | |
|   // If `elOptionType` is `null`, follow the merge principle.
 | |
|   || elOptionType != null && elOptionType !== el.__customGraphicType || elOptionType === 'path' && hasOwnPathData(elOptionShape) && getPathData(elOptionShape) !== el.__customPathData || elOptionType === 'image' && hasOwn(elOptionStyle, 'image') && elOptionStyle.image !== el.__customImagePath // FIXME test and remove this restriction?
 | |
|   || elOptionType === 'text' && hasOwn(elOptionShape, 'text') && elOptionStyle.text !== el.__customText)) {
 | |
|     group.remove(el);
 | |
|     el = null;
 | |
|   } // `elOption.type` is undefined when `renderItem` returns nothing.
 | |
| 
 | |
| 
 | |
|   if (simplyRemove) {
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   var isInit = !el;
 | |
|   !el && (el = createEl(elOption));
 | |
|   updateEl(el, dataIndex, elOption, animatableModel, data, isInit, isRoot);
 | |
| 
 | |
|   if (elOptionType === 'group') {
 | |
|     mergeChildren(el, dataIndex, elOption, animatableModel, data);
 | |
|   } // Always add whatever already added to ensure sequence.
 | |
| 
 | |
| 
 | |
|   group.add(el);
 | |
|   return el;
 | |
| } // Usage:
 | |
| // (1) By default, `elOption.$mergeChildren` is `'byIndex'`, which indicates that
 | |
| //     the existing children will not be removed, and enables the feature that
 | |
| //     update some of the props of some of the children simply by construct
 | |
| //     the returned children of `renderItem` like:
 | |
| //     `var children = group.children = []; children[3] = {opacity: 0.5};`
 | |
| // (2) If `elOption.$mergeChildren` is `'byName'`, add/update/remove children
 | |
| //     by child.name. But that might be lower performance.
 | |
| // (3) If `elOption.$mergeChildren` is `false`, the existing children will be
 | |
| //     replaced totally.
 | |
| // (4) If `!elOption.children`, following the "merge" principle, nothing will happen.
 | |
| //
 | |
| // For implementation simpleness, do not provide a direct way to remove sinlge
 | |
| // child (otherwise the total indicies of the children array have to be modified).
 | |
| // User can remove a single child by set its `ignore` as `true` or replace
 | |
| // it by another element, where its `$merge` can be set as `true` if necessary.
 | |
| 
 | |
| 
 | |
| function mergeChildren(el, dataIndex, elOption, animatableModel, data) {
 | |
|   var newChildren = elOption.children;
 | |
|   var newLen = newChildren ? newChildren.length : 0;
 | |
|   var mergeChildren = elOption.$mergeChildren; // `diffChildrenByName` has been deprecated.
 | |
| 
 | |
|   var byName = mergeChildren === 'byName' || elOption.diffChildrenByName;
 | |
|   var notMerge = mergeChildren === false; // For better performance on roam update, only enter if necessary.
 | |
| 
 | |
|   if (!newLen && !byName && !notMerge) {
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   if (byName) {
 | |
|     diffGroupChildren({
 | |
|       oldChildren: el.children() || [],
 | |
|       newChildren: newChildren || [],
 | |
|       dataIndex: dataIndex,
 | |
|       animatableModel: animatableModel,
 | |
|       group: el,
 | |
|       data: data
 | |
|     });
 | |
|     return;
 | |
|   }
 | |
| 
 | |
|   notMerge && el.removeAll(); // Mapping children of a group simply by index, which
 | |
|   // might be better performance.
 | |
| 
 | |
|   var index = 0;
 | |
| 
 | |
|   for (; index < newLen; index++) {
 | |
|     newChildren[index] && doCreateOrUpdate(el.childAt(index), dataIndex, newChildren[index], animatableModel, el, data);
 | |
|   }
 | |
| }
 | |
| 
 | |
| function diffGroupChildren(context) {
 | |
|   new DataDiffer(context.oldChildren, context.newChildren, getKey, getKey, context).add(processAddUpdate).update(processAddUpdate).remove(processRemove).execute();
 | |
| }
 | |
| 
 | |
| function getKey(item, idx) {
 | |
|   var name = item && item.name;
 | |
|   return name != null ? name : GROUP_DIFF_PREFIX + idx;
 | |
| }
 | |
| 
 | |
| function processAddUpdate(newIndex, oldIndex) {
 | |
|   var context = this.context;
 | |
|   var childOption = newIndex != null ? context.newChildren[newIndex] : null;
 | |
|   var child = oldIndex != null ? context.oldChildren[oldIndex] : null;
 | |
|   doCreateOrUpdate(child, context.dataIndex, childOption, context.animatableModel, context.group, context.data);
 | |
| } // `graphic#applyDefaultTextStyle` will cache
 | |
| // textFill, textStroke, textStrokeWidth.
 | |
| // We have to do this trick.
 | |
| 
 | |
| 
 | |
| function applyExtraBefore(extra, model) {
 | |
|   var dummyModel = new Model({}, model);
 | |
|   zrUtil.each(CACHED_LABEL_STYLE_PROPERTIES, function (stylePropName, modelPropName) {
 | |
|     if (extra.hasOwnProperty(stylePropName)) {
 | |
|       dummyModel.option[modelPropName] = extra[stylePropName];
 | |
|     }
 | |
|   });
 | |
|   return dummyModel;
 | |
| }
 | |
| 
 | |
| function applyExtraAfter(itemStyle, extra) {
 | |
|   for (var key in extra) {
 | |
|     if (extra.hasOwnProperty(key) || !CACHED_LABEL_STYLE_PROPERTIES.hasOwnProperty(key)) {
 | |
|       itemStyle[key] = extra[key];
 | |
|     }
 | |
|   }
 | |
| }
 | |
| 
 | |
| function processRemove(oldIndex) {
 | |
|   var context = this.context;
 | |
|   var child = context.oldChildren[oldIndex];
 | |
|   child && context.group.remove(child);
 | |
| }
 | |
| 
 | |
| function getPathData(shape) {
 | |
|   // "d" follows the SVG convention.
 | |
|   return shape && (shape.pathData || shape.d);
 | |
| }
 | |
| 
 | |
| function hasOwnPathData(shape) {
 | |
|   return shape && (shape.hasOwnProperty('pathData') || shape.hasOwnProperty('d'));
 | |
| }
 | |
| 
 | |
| function hasOwn(host, prop) {
 | |
|   return host && host.hasOwnProperty(prop);
 | |
| } | 
