react-filerobot-image-editor/lib/custom/filters/BaseFilters.js

React component version of filerobot image editor (FIE).

import _slicedToArray from"@babel/runtime/helpers/slicedToArray";function _createForOfIteratorHelper(a,b){var c="undefined"!=typeof Symbol&&a[Symbol.iterator]||a["@@iterator"];if(!c){if(Array.isArray(a)||(c=_unsupportedIterableToArray(a))||b&&a&&"number"==typeof a.length){c&&(a=c);var d=0,e=function(){};return{s:e,n:function n(){return d>=a.length?{done:!0}:{done:!1,value:a[d++]}},e:function e(a){throw a},f:e}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}var f,g=!0,h=!1;return{s:function s(){c=c.call(a)},n:function n(){var a=c.next();return g=a.done,a},e:function e(a){h=!0,f=a},f:function f(){try{g||null==c["return"]||c["return"]()}finally{if(h)throw f}}}}function _unsupportedIterableToArray(a,b){if(a){if("string"==typeof a)return _arrayLikeToArray(a,b);var c=Object.prototype.toString.call(a).slice(8,-1);return"Object"===c&&a.constructor&&(c=a.constructor.name),"Map"===c||"Set"===c?Array.from(a):"Arguments"===c||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(c)?_arrayLikeToArray(a,b):void 0}}function _arrayLikeToArray(a,b){(null==b||b>a.length)&&(b=a.length);for(var c=0,d=Array(b);c<b;c++)d[c]=a[c];return d}var BaseFilters={apply:function apply(a){for(var b=a.data,c=b.length,d=arguments.length,e=Array(1<d?d-1:0),f=1;f<d;f++)e[f-1]=arguments[f];for(var g=0;g<c;g+=4){var h,j=_createForOfIteratorHelper(e);try{for(j.s();!(h=j.n()).done;){var k=h.value,l=k([b[g],b[g+1],b[g+2]]),m=_slicedToArray(l,3);b[g]=m[0],b[g+1]=m[1],b[g+2]=m[2]}}catch(a){j.e(a)}finally{j.f()}}},brightness:function brightness(a){return function(b){var c=a;return c=1<c?1:c,c=-1>c?-1:c,c=~~(255*c),[b[0]+c,b[1]+c,b[2]+c]}},contrast:function contrast(a){return function(b){var c=a;c*=255;var d=259*(c+255)/(255*(259-c));return[d*(b[0]-128)+128,d*(b[1]-128)+128,d*(b[2]-128)+128]}},saturation:function saturation(a){return function(c){var d=a;d=-1>d?-1:d;var e=c[0],f=c[1],g=c[2],b=.2989*e+.587*f+.114*g;return[-b*d+e*(1+d),-b*d+f*(1+d),-b*d+g*(1+d)]}},grayscale:function grayscale(){return function(a){var c=a[0],d=a[1],e=a[2];return[,,,].fill(.2126*c+.7152*d+.0722*e)}},sepia:function sepia(a){return function(c){var d=c[0],e=c[1],f=c[2];return[d*(1-.607*a)+.769*e*a+.189*f*a,.349*d*a+e*(1-.314*a)+.168*f*a,.272*d*a+.534*e*a+f*(1-.869*a)]}},adjustRGB:function adjustRGB(a){return function(b){return[b[0]*a[0],b[1]*a[1],b[2]*a[2]]}},colorFilter:function colorFilter(a){return function(c){var d=c[0],e=c[1],f=c[2],b=a[3];return[d-(d-a[0])*b,e-(e-a[1])*b,f-(f-a[2])*b]}}};export default BaseFilters;