parallel.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 * as throttleUtil from '../util/throttle';
import parallelPreprocessor from '../coord/parallel/parallelPreprocessor';
import '../coord/parallel/parallelCreator';
import '../coord/parallel/ParallelModel';
import './parallelAxis';
var CLICK_THRESHOLD = 5; // > 4
// Parallel view
echarts.extendComponentView({
type: 'parallel',
render: function (parallelModel, ecModel, api) {
this._model = parallelModel;
this._api = api;
if (!this._handlers) {
this._handlers = {};
zrUtil.each(handlers, function (handler, eventName) {
api.getZr().on(eventName, this._handlers[eventName] = zrUtil.bind(handler, this));
}, this);
}
throttleUtil.createOrUpdate(
this,
'_throttledDispatchExpand',
parallelModel.get('axisExpandRate'),
'fixRate'
);
},
dispose: function (ecModel, api) {
zrUtil.each(this._handlers, function (handler, eventName) {
api.getZr().off(eventName, handler);
});
this._handlers = null;
},
/**
* @param {Object} [opt] If null, cancle the last action triggering for debounce.
*/
_throttledDispatchExpand: function (opt) {
this._dispatchExpand(opt);
},
_dispatchExpand: function (opt) {
opt && this._api.dispatchAction(
zrUtil.extend({type: 'parallelAxisExpand'}, opt)
);
}
});
var handlers = {
mousedown: function (e) {
if (checkTrigger(this, 'click')) {
this._mouseDownPoint = [e.offsetX, e.offsetY];
}
},
mouseup: function (e) {
var mouseDownPoint = this._mouseDownPoint;
if (checkTrigger(this, 'click') && mouseDownPoint) {
var point = [e.offsetX, e.offsetY];
var dist = Math.pow(mouseDownPoint[0] - point[0], 2)
+ Math.pow(mouseDownPoint[1] - point[1], 2);
if (dist > CLICK_THRESHOLD) {
return;
}
var result = this._model.coordinateSystem.getSlidedAxisExpandWindow(
[e.offsetX, e.offsetY]
);
result.behavior !== 'none' && this._dispatchExpand({
axisExpandWindow: result.axisExpandWindow
});
}
this._mouseDownPoint = null;
},
mousemove: function (e) {
// Should do nothing when brushing.
if (this._mouseDownPoint || !checkTrigger(this, 'mousemove')) {
return;
}
var model = this._model;
var result = model.coordinateSystem.getSlidedAxisExpandWindow(
[e.offsetX, e.offsetY]
);
var behavior = result.behavior;
behavior === 'jump' && this._throttledDispatchExpand.debounceNextCall(model.get('axisExpandDebounce'));
this._throttledDispatchExpand(
behavior === 'none'
? null // Cancle the last trigger, in case that mouse slide out of the area quickly.
: {
axisExpandWindow: result.axisExpandWindow,
// Jumping uses animation, and sliding suppresses animation.
animation: behavior === 'jump' ? null : false
}
);
}
};
function checkTrigger(view, triggerOn) {
var model = view._model;
return model.get('axisExpandable') && model.get('axisExpandTriggerOn') === triggerOn;
}
echarts.registerPreprocessor(parallelPreprocessor);