dtable-utils/lib/color/gradient-color.js

dtable common utils

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var _defineProperty = require('@babel/runtime/helpers/defineProperty');
var _classCallCheck = require('@babel/runtime/helpers/classCallCheck');
var _createClass = require('@babel/runtime/helpers/createClass');
var color = require('../constants/color.js');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var _defineProperty__default = /*#__PURE__*/_interopDefaultLegacy(_defineProperty);
var _classCallCheck__default = /*#__PURE__*/_interopDefaultLegacy(_classCallCheck);
var _createClass__default = /*#__PURE__*/_interopDefaultLegacy(_createClass);

var GradientColorUtils = /*#__PURE__*/function () {
  function GradientColorUtils(_ref) {
    var colorType = _ref.colorType,
      max = _ref.max,
      min = _ref.min;
    _classCallCheck__default["default"](this, GradientColorUtils);
    var newColorType = colorType || 'color_gradation_1';
    var colors = color.COLOR_GRADATION_OPTIONS[newColorType];
    this.startColor = this.hexToRgb(colors[0]);
    this.endColor = this.hexToRgb(colors[4]);
    this.min = min;
    this.max = max;
    this.computeMap = {};
  }
  return _createClass__default["default"](GradientColorUtils, [{
    key: "hexToRgb",
    value: function hexToRgb(hexCode) {
      var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
      var nextHexCode = hexCode.toLowerCase();
      if (nextHexCode && reg.test(nextHexCode)) {
        if (nextHexCode.length === 4) {
          var newHexCode = '#';
          for (var i = 1; i < 4; i += 1) {
            newHexCode += nextHexCode.slice(i, i + 1).concat(nextHexCode.slice(i, i + 1));
          }
          nextHexCode = newHexCode;
        }
        var hexCodeChange = [];
        for (var _i = 1; _i < 7; _i += 2) {
          hexCodeChange.push(parseInt("0x".concat(nextHexCode.slice(_i, _i + 2))));
        }
        return "RGB(".concat(hexCodeChange.join(','), ")");
      }
      return nextHexCode;
    }
  }, {
    key: "getColorGradation",
    value: function getColorGradation(color1, color2, value1, value2, value) {
      var rgb1 = color1.split(',');
      var r1 = parseInt(rgb1[0].split('(')[1]);
      var g1 = parseInt(rgb1[1]);
      var b1 = parseInt(rgb1[2].split(')')[0]);
      var rgb2 = color2.split(',');
      var r2 = parseInt(rgb2[0].split('(')[1]);
      var g2 = parseInt(rgb2[1]);
      var b2 = parseInt(rgb2[2].split(')')[0]);
      var r = Math.round(r1 - (r1 - r2) / (value1 - value2) * (value1 - value));
      var g = Math.round(g1 - (g1 - g2) / (value1 - value2) * (value1 - value));
      var b = Math.round(b1 - (b1 - b2) / (value1 - value2) * (value1 - value));
      return "rgb(".concat(r, ", ").concat(g, ", ").concat(b, ")");
    }
  }, {
    key: "getCellColor",
    value: function getCellColor(value) {
      if (this.computeMap[value]) {
        return this.computeMap[value];
      }

      // eslint-disable-next-line
      if (value == this.min) {
        if (this.computeMap[value]) {
          this.computeMap[value] = this.startColor;
        } else {
          this.computeMap = _defineProperty__default["default"]({}, value, this.startColor);
        }
        return this.computeMap[value];
      }

      // eslint-disable-next-line
      if (value == this.max) {
        if (this.computeMap[value]) {
          this.computeMap[value] = this.endColor;
        } else {
          this.computeMap = _defineProperty__default["default"]({}, value, this.endColor);
        }
        return this.computeMap[value];
      }
      if (value > this.min && value < this.max) {
        var color1 = this.startColor,
          color2 = this.endColor,
          value1 = this.min,
          value2 = this.max;
        var color = this.getColorGradation(color1, color2, value1, value2, value);
        this.computeMap[value] = color;
        return this.computeMap[value];
      }

      // value < min || value > max
      return null;
    }
  }]);
}();

exports["default"] = GradientColorUtils;