echarts Polyline 源码

echarts Polyline 代码

文件路径：/src/chart/helper/Polyline.ts

/*
* 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.
*/

import * as graphic from '../../util/graphic';
import { toggleHoverEmphasis } from '../../util/states';
import type { LineDrawSeriesScope, LineDrawModelOption } from './LineDraw';
import type SeriesData from '../../data/SeriesData';
import { BlurScope, DefaultEmphasisFocus } from '../../util/types';

class Polyline extends graphic.Group {
    constructor(lineData: SeriesData, idx: number, seriesScope: LineDrawSeriesScope) {
        super();
        this._createPolyline(lineData, idx, seriesScope);
    }

    private _createPolyline(lineData: SeriesData, idx: number, seriesScope: LineDrawSeriesScope) {
        // let seriesModel = lineData.hostModel;
        const points = lineData.getItemLayout(idx);

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

        this.add(line);

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

    updateData(lineData: SeriesData, idx: number, seriesScope: LineDrawSeriesScope) {
        const seriesModel = lineData.hostModel;

        const line = this.childAt(0) as graphic.Polyline;
        const target = {
            shape: {
                points: lineData.getItemLayout(idx) as number[][]
            }
        };
        graphic.updateProps(line, target, seriesModel, idx);

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

    _updateCommonStl(lineData: SeriesData, idx: number, seriesScope: LineDrawSeriesScope) {
        const line = this.childAt(0) as graphic.Polyline;
        const itemModel = lineData.getItemModel<LineDrawModelOption>(idx);


        let emphasisLineStyle = seriesScope && seriesScope.emphasisLineStyle;
        let focus = (seriesScope && seriesScope.focus) as DefaultEmphasisFocus;
        let blurScope = (seriesScope && seriesScope.blurScope) as BlurScope;
        let emphasisDisabled = seriesScope && seriesScope.emphasisDisabled;


        if (!seriesScope || lineData.hasItemOption) {
            const emphasisModel = itemModel.getModel('emphasis');
            emphasisLineStyle = emphasisModel.getModel('lineStyle').getLineStyle();
            emphasisDisabled = emphasisModel.get('disabled');
            focus = emphasisModel.get('focus');
            blurScope = emphasisModel.get('blurScope');
        }
        line.useStyle(lineData.getItemVisual(idx, 'style'));
        line.style.fill = null;
        line.style.strokeNoScale = true;

        const lineEmphasisState = line.ensureState('emphasis');
        lineEmphasisState.style = emphasisLineStyle;

        toggleHoverEmphasis(this, focus, blurScope, emphasisDisabled);
    };

    updateLayout(lineData: SeriesData, idx: number) {
        const polyline = this.childAt(0) as graphic.Polyline;
        polyline.setShape('points', lineData.getItemLayout(idx));
    };

}

export default Polyline;

相关信息

echarts 源码目录

相关文章

echarts EffectLine 源码

echarts EffectPolyline 源码

echarts EffectSymbol 源码

echarts LargeLineDraw 源码

echarts LargeSymbolDraw 源码

echarts Line 源码

echarts LineDraw 源码

echarts LinePath 源码

echarts Symbol 源码

echarts SymbolDraw 源码