lepu-test-platform-web/node_modules/echarts/lib/scale/Scale.js

195 lines
4.7 KiB
JavaScript

/*
* 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.
*/
var clazzUtil = require("../util/clazz");
/*
* 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.
*/
/**
* // Scale class management
* @module echarts/scale/Scale
*/
/**
* @param {Object} [setting]
*/
function Scale(setting) {
this._setting = setting || {};
/**
* Extent
* @type {Array.<number>}
* @protected
*/
this._extent = [Infinity, -Infinity];
/**
* Step is calculated in adjustExtent
* @type {Array.<number>}
* @protected
*/
this._interval = 0;
this.init && this.init.apply(this, arguments);
}
/**
* Parse input val to valid inner number.
* @param {*} val
* @return {number}
*/
Scale.prototype.parse = function (val) {
// Notice: This would be a trap here, If the implementation
// of this method depends on extent, and this method is used
// before extent set (like in dataZoom), it would be wrong.
// Nevertheless, parse does not depend on extent generally.
return val;
};
Scale.prototype.getSetting = function (name) {
return this._setting[name];
};
Scale.prototype.contain = function (val) {
var extent = this._extent;
return val >= extent[0] && val <= extent[1];
};
/**
* Normalize value to linear [0, 1], return 0.5 if extent span is 0
* @param {number} val
* @return {number}
*/
Scale.prototype.normalize = function (val) {
var extent = this._extent;
if (extent[1] === extent[0]) {
return 0.5;
}
return (val - extent[0]) / (extent[1] - extent[0]);
};
/**
* Scale normalized value
* @param {number} val
* @return {number}
*/
Scale.prototype.scale = function (val) {
var extent = this._extent;
return val * (extent[1] - extent[0]) + extent[0];
};
/**
* Set extent from data
* @param {Array.<number>} other
*/
Scale.prototype.unionExtent = function (other) {
var extent = this._extent;
other[0] < extent[0] && (extent[0] = other[0]);
other[1] > extent[1] && (extent[1] = other[1]); // not setExtent because in log axis it may transformed to power
// this.setExtent(extent[0], extent[1]);
};
/**
* Set extent from data
* @param {module:echarts/data/List} data
* @param {string} dim
*/
Scale.prototype.unionExtentFromData = function (data, dim) {
this.unionExtent(data.getApproximateExtent(dim));
};
/**
* Get extent
* @return {Array.<number>}
*/
Scale.prototype.getExtent = function () {
return this._extent.slice();
};
/**
* Set extent
* @param {number} start
* @param {number} end
*/
Scale.prototype.setExtent = function (start, end) {
var thisExtent = this._extent;
if (!isNaN(start)) {
thisExtent[0] = start;
}
if (!isNaN(end)) {
thisExtent[1] = end;
}
};
/**
* When axis extent depends on data and no data exists,
* axis ticks should not be drawn, which is named 'blank'.
*/
Scale.prototype.isBlank = function () {
return this._isBlank;
},
/**
* When axis extent depends on data and no data exists,
* axis ticks should not be drawn, which is named 'blank'.
*/
Scale.prototype.setBlank = function (isBlank) {
this._isBlank = isBlank;
};
/**
* @abstract
* @param {*} tick
* @return {string} label of the tick.
*/
Scale.prototype.getLabel = null;
clazzUtil.enableClassExtend(Scale);
clazzUtil.enableClassManagement(Scale, {
registerWhenExtend: true
});
var _default = Scale;
module.exports = _default;