195 lines
4.7 KiB
JavaScript
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; |