echarts linesVisual 源码
echarts linesVisual 代码
文件路径：/src/chart/lines/linesVisual.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 { StageHandler } from '../../util/types';
import SeriesData from '../../data/SeriesData';
import LinesSeriesModel, { LinesDataItemOption } from './LinesSeries';
import Model from '../../model/Model';
import { LineDataVisual } from '../../visual/commonVisualTypes';
function normalize(a: string | string[]): string[];
function normalize(a: number | number[]): number[];
function normalize(a: string | number | (string | number)[]): (string | number)[] {
if (!(a instanceof Array)) {
a = [a, a];
}
return a;
}
const linesVisual: StageHandler = {
seriesType: 'lines',
reset(seriesModel: LinesSeriesModel) {
const symbolType = normalize(seriesModel.get('symbol'));
const symbolSize = normalize(seriesModel.get('symbolSize'));
const data = seriesModel.getData() as SeriesData<LinesSeriesModel, LineDataVisual>;
data.setVisual('fromSymbol', symbolType && symbolType[0]);
data.setVisual('toSymbol', symbolType && symbolType[1]);
data.setVisual('fromSymbolSize', symbolSize && symbolSize[0]);
data.setVisual('toSymbolSize', symbolSize && symbolSize[1]);
function dataEach(
data: SeriesData<LinesSeriesModel, LineDataVisual>,
idx: number
): void {
const itemModel = data.getItemModel(idx) as Model<LinesDataItemOption>;
const symbolType = normalize(itemModel.getShallow('symbol', true));
const symbolSize = normalize(itemModel.getShallow('symbolSize', true));
symbolType[0] && data.setItemVisual(idx, 'fromSymbol', symbolType[0]);
symbolType[1] && data.setItemVisual(idx, 'toSymbol', symbolType[1]);
symbolSize[0] && data.setItemVisual(idx, 'fromSymbolSize', symbolSize[0]);
symbolSize[1] && data.setItemVisual(idx, 'toSymbolSize', symbolSize[1]);
}
return {
dataEach: data.hasItemOption ? dataEach : null
};
}
};
export default linesVisual;
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