LinesView.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 {__DEV__} from '../../config';
import * as echarts from '../../echarts';
import LineDraw from '../helper/LineDraw';
import EffectLine from '../helper/EffectLine';
import Line from '../helper/Line';
import Polyline from '../helper/Polyline';
import EffectPolyline from '../helper/EffectPolyline';
import LargeLineDraw from '../helper/LargeLineDraw';
import linesLayout from './linesLayout';
export default echarts.extendChartView({
type: 'lines',
init: function () {},
render: function (seriesModel, ecModel, api) {
var data = seriesModel.getData();
var lineDraw = this._updateLineDraw(data, seriesModel);
var zlevel = seriesModel.get('zlevel');
var trailLength = seriesModel.get('effect.trailLength');
var zr = api.getZr();
// Avoid the drag cause ghost shadow
// FIXME Better way ?
// SVG doesn't support
var isSvg = zr.painter.getType() === 'svg';
if (!isSvg) {
zr.painter.getLayer(zlevel).clear(true);
}
// Config layer with motion blur
if (this._lastZlevel != null && !isSvg) {
zr.configLayer(this._lastZlevel, {
motionBlur: false
});
}
if (this._showEffect(seriesModel) && trailLength) {
if (__DEV__) {
var notInIndividual = false;
ecModel.eachSeries(function (otherSeriesModel) {
if (otherSeriesModel !== seriesModel && otherSeriesModel.get('zlevel') === zlevel) {
notInIndividual = true;
}
});
notInIndividual && console.warn('Lines with trail effect should have an individual zlevel');
}
if (!isSvg) {
zr.configLayer(zlevel, {
motionBlur: true,
lastFrameAlpha: Math.max(Math.min(trailLength / 10 + 0.9, 1), 0)
});
}
}
lineDraw.updateData(data);
this._lastZlevel = zlevel;
this._finished = true;
},
incrementalPrepareRender: function (seriesModel, ecModel, api) {
var data = seriesModel.getData();
var lineDraw = this._updateLineDraw(data, seriesModel);
lineDraw.incrementalPrepareUpdate(data);
this._clearLayer(api);
this._finished = false;
},
incrementalRender: function (taskParams, seriesModel, ecModel) {
this._lineDraw.incrementalUpdate(taskParams, seriesModel.getData());
this._finished = taskParams.end === seriesModel.getData().count();
},
updateTransform: function (seriesModel, ecModel, api) {
var data = seriesModel.getData();
var pipelineContext = seriesModel.pipelineContext;
if (!this._finished || pipelineContext.large || pipelineContext.progressiveRender) {
// TODO Don't have to do update in large mode. Only do it when there are millions of data.
return {
update: true
};
}
else {
// TODO Use same logic with ScatterView.
// Manually update layout
var res = linesLayout.reset(seriesModel);
if (res.progress) {
res.progress({ start: 0, end: data.count() }, data);
}
this._lineDraw.updateLayout();
this._clearLayer(api);
}
},
_updateLineDraw: function (data, seriesModel) {
var lineDraw = this._lineDraw;
var hasEffect = this._showEffect(seriesModel);
var isPolyline = !!seriesModel.get('polyline');
var pipelineContext = seriesModel.pipelineContext;
var isLargeDraw = pipelineContext.large;
if (__DEV__) {
if (hasEffect && isLargeDraw) {
console.warn('Large lines not support effect');
}
}
if (!lineDraw
|| hasEffect !== this._hasEffet
|| isPolyline !== this._isPolyline
|| isLargeDraw !== this._isLargeDraw
) {
if (lineDraw) {
lineDraw.remove();
}
lineDraw = this._lineDraw = isLargeDraw
? new LargeLineDraw()
: new LineDraw(
isPolyline
? (hasEffect ? EffectPolyline : Polyline)
: (hasEffect ? EffectLine : Line)
);
this._hasEffet = hasEffect;
this._isPolyline = isPolyline;
this._isLargeDraw = isLargeDraw;
this.group.removeAll();
}
this.group.add(lineDraw.group);
return lineDraw;
},
_showEffect: function (seriesModel) {
return !!seriesModel.get('effect.show');
},
_clearLayer: function (api) {
// Not use motion when dragging or zooming
var zr = api.getZr();
var isSvg = zr.painter.getType() === 'svg';
if (!isSvg && this._lastZlevel != null) {
zr.painter.getLayer(this._lastZlevel).clear(true);
}
},
remove: function (ecModel, api) {
this._lineDraw && this._lineDraw.remove();
this._lineDraw = null;
// Clear motion when lineDraw is removed
this._clearLayer(api);
},
dispose: function () {}
});