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Viewing file:     Polyline.js (2.89 KB)      -rw-r--r--

/*
* 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.
*/

/**
 * @module echarts/chart/helper/Line
 */

import * as graphic from '../../util/graphic';
import * as zrUtil from 'zrender/src/core/util';

/**
 * @constructor
 * @extends {module:zrender/graphic/Group}
 * @alias {module:echarts/chart/helper/Polyline}
 */
function Polyline(lineData, idx, seriesScope) {
    graphic.Group.call(this);

    this._createPolyline(lineData, idx, seriesScope);
}

var polylineProto = Polyline.prototype;

polylineProto._createPolyline = function (lineData, idx, seriesScope) {
    // var seriesModel = lineData.hostModel;
    var points = lineData.getItemLayout(idx);

    var line = new graphic.Polyline({
        shape: {
            points: points
        }
    });

    this.add(line);

    this._updateCommonStl(lineData, idx, seriesScope);
};

polylineProto.updateData = function (lineData, idx, seriesScope) {
    var seriesModel = lineData.hostModel;

    var line = this.childAt(0);
    var target = {
        shape: {
            points: lineData.getItemLayout(idx)
        }
    };
    graphic.updateProps(line, target, seriesModel, idx);

    this._updateCommonStl(lineData, idx, seriesScope);
};

polylineProto._updateCommonStl = function (lineData, idx, seriesScope) {
    var line = this.childAt(0);
    var itemModel = lineData.getItemModel(idx);

    var visualColor = lineData.getItemVisual(idx, 'color');

    var lineStyle = seriesScope && seriesScope.lineStyle;
    var hoverLineStyle = seriesScope && seriesScope.hoverLineStyle;

    if (!seriesScope || lineData.hasItemOption) {
        lineStyle = itemModel.getModel('lineStyle').getLineStyle();
        hoverLineStyle = itemModel.getModel('emphasis.lineStyle').getLineStyle();
    }
    line.useStyle(zrUtil.defaults(
        {
            strokeNoScale: true,
            fill: 'none',
            stroke: visualColor
        },
        lineStyle
    ));
    line.hoverStyle = hoverLineStyle;

    graphic.setHoverStyle(this);
};

polylineProto.updateLayout = function (lineData, idx) {
    var polyline = this.childAt(0);
    polyline.setShape('points', lineData.getItemLayout(idx));
};

zrUtil.inherits(Polyline, graphic.Group);

export default Polyline;