dataZoomProcessor.js
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/*
* 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 echarts from '../../echarts';
import {createHashMap, each} from 'zrender/src/core/util';
echarts.registerProcessor({
// `dataZoomProcessor` will only be performed in needed series. Consider if
// there is a line series and a pie series, it is better not to update the
// line series if only pie series is needed to be updated.
getTargetSeries: function (ecModel) {
var seriesModelMap = createHashMap();
ecModel.eachComponent('dataZoom', function (dataZoomModel) {
dataZoomModel.eachTargetAxis(function (dimNames, axisIndex, dataZoomModel) {
var axisProxy = dataZoomModel.getAxisProxy(dimNames.name, axisIndex);
each(axisProxy.getTargetSeriesModels(), function (seriesModel) {
seriesModelMap.set(seriesModel.uid, seriesModel);
});
});
});
return seriesModelMap;
},
modifyOutputEnd: true,
// Consider appendData, where filter should be performed. Because data process is
// in block mode currently, it is not need to worry about that the overallProgress
// execute every frame.
overallReset: function (ecModel, api) {
ecModel.eachComponent('dataZoom', function (dataZoomModel) {
// We calculate window and reset axis here but not in model
// init stage and not after action dispatch handler, because
// reset should be called after seriesData.restoreData.
dataZoomModel.eachTargetAxis(function (dimNames, axisIndex, dataZoomModel) {
dataZoomModel.getAxisProxy(dimNames.name, axisIndex).reset(dataZoomModel, api);
});
// Caution: data zoom filtering is order sensitive when using
// percent range and no min/max/scale set on axis.
// For example, we have dataZoom definition:
// [
// {xAxisIndex: 0, start: 30, end: 70},
// {yAxisIndex: 0, start: 20, end: 80}
// ]
// In this case, [20, 80] of y-dataZoom should be based on data
// that have filtered by x-dataZoom using range of [30, 70],
// but should not be based on full raw data. Thus sliding
// x-dataZoom will change both ranges of xAxis and yAxis,
// while sliding y-dataZoom will only change the range of yAxis.
// So we should filter x-axis after reset x-axis immediately,
// and then reset y-axis and filter y-axis.
dataZoomModel.eachTargetAxis(function (dimNames, axisIndex, dataZoomModel) {
dataZoomModel.getAxisProxy(dimNames.name, axisIndex).filterData(dataZoomModel, api);
});
});
ecModel.eachComponent('dataZoom', function (dataZoomModel) {
// Fullfill all of the range props so that user
// is able to get them from chart.getOption().
var axisProxy = dataZoomModel.findRepresentativeAxisProxy();
var percentRange = axisProxy.getDataPercentWindow();
var valueRange = axisProxy.getDataValueWindow();
dataZoomModel.setRawRange({
start: percentRange[0],
end: percentRange[1],
startValue: valueRange[0],
endValue: valueRange[1]
}, true);
});
}
});