BrushView.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 * as zrUtil from 'zrender/src/core/util';
import BrushController from '../helper/BrushController';
export default echarts.extendComponentView({
type: 'brush',
init: function (ecModel, api) {
/**
* @readOnly
* @type {module:echarts/model/Global}
*/
this.ecModel = ecModel;
/**
* @readOnly
* @type {module:echarts/ExtensionAPI}
*/
this.api = api;
/**
* @readOnly
* @type {module:echarts/component/brush/BrushModel}
*/
this.model;
/**
* @private
* @type {module:echarts/component/helper/BrushController}
*/
(this._brushController = new BrushController(api.getZr()))
.on('brush', zrUtil.bind(this._onBrush, this))
.mount();
},
/**
* @override
*/
render: function (brushModel) {
this.model = brushModel;
return updateController.apply(this, arguments);
},
/**
* @override
*/
updateTransform: updateController,
/**
* @override
*/
updateView: updateController,
// /**
// * @override
// */
// updateLayout: updateController,
// /**
// * @override
// */
// updateVisual: updateController,
/**
* @override
*/
dispose: function () {
this._brushController.dispose();
},
/**
* @private
*/
_onBrush: function (areas, opt) {
var modelId = this.model.id;
this.model.brushTargetManager.setOutputRanges(areas, this.ecModel);
// Action is not dispatched on drag end, because the drag end
// emits the same params with the last drag move event, and
// may have some delay when using touch pad, which makes
// animation not smooth (when using debounce).
(!opt.isEnd || opt.removeOnClick) && this.api.dispatchAction({
type: 'brush',
brushId: modelId,
areas: zrUtil.clone(areas),
$from: modelId
});
}
});
function updateController(brushModel, ecModel, api, payload) {
// Do not update controller when drawing.
(!payload || payload.$from !== brushModel.id) && this._brushController
.setPanels(brushModel.brushTargetManager.makePanelOpts(api))
.enableBrush(brushModel.brushOption)
.updateCovers(brushModel.areas.slice());
}