replace-color-ts/lib/cjs/replace-color.js

Replace color with another one pixel by pixel.

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const Jimp = __importStar(require("jimp"));
const convert_color_1 = __importDefault(require("./utils/convert-color"));
const get_delta_1 = __importDefault(require("./utils/get-delta"));
const is_number_1 = __importDefault(require("./utils/is-number"));
const replace_color_error_1 = __importDefault(require("./utils/replace-color-error"));
const validate_colors_1 = __importDefault(require("./utils/validate-colors"));
const replaceColor = ({ image, colors, formula = "E00", deltaE = 2.3 }, callback) => {
    if (callback) {
        if (typeof callback !== "function") {
            throw new replace_color_error_1.default("PARAMETER_INVALID", "callback");
        }
    }
    return new Promise((resolve, reject) => {
        callback =
            callback ||
                ((err, jimpObject) => {
                    if (err)
                        return reject(err);
                    return resolve(jimpObject);
                });
        if (!image) {
            return callback(new replace_color_error_1.default("PARAMETER_REQUIRED", "options.image"));
        }
        const colorsValidationError = (0, validate_colors_1.default)(colors);
        if (colorsValidationError) {
            return callback(new replace_color_error_1.default(colorsValidationError.code, colorsValidationError.field));
        }
        if (!(typeof formula === "string" && ["E76", "E94", "E00"].includes(formula))) {
            return callback(new replace_color_error_1.default("PARAMETER_INVALID", "options.formula"));
        }
        if (!((0, is_number_1.default)(deltaE) && deltaE >= 0 && deltaE <= 100)) {
            return callback(new replace_color_error_1.default("PARAMETER_INVALID", "options.deltaE"));
        }
        Jimp.read(image)
            .then((jimpObject) => {
            const targetLABColor = (0, convert_color_1.default)(colors.type, "lab", colors.targetColor);
            const replaceRGBColor = (0, convert_color_1.default)(colors.type, "rgb", colors.replaceColor);
            jimpObject.scan(0, 0, jimpObject.bitmap.width, jimpObject.bitmap.height, (x, y, idx) => {
                const currentLABColor = (0, convert_color_1.default)("rgb", "lab", [
                    jimpObject.bitmap.data[idx],
                    jimpObject.bitmap.data[idx + 1],
                    jimpObject.bitmap.data[idx + 2],
                ]);
                if ((0, get_delta_1.default)(currentLABColor, targetLABColor, formula) <= deltaE) {
                    jimpObject.bitmap.data[idx] = replaceRGBColor[0];
                    jimpObject.bitmap.data[idx + 1] = replaceRGBColor[1];
                    jimpObject.bitmap.data[idx + 2] = replaceRGBColor[2];
                    if (replaceRGBColor[3] !== null)
                        jimpObject.bitmap.data[idx + 3] = replaceRGBColor[3];
                }
            });
            if (callback)
                callback(null, jimpObject);
        })
            .catch(callback);
    });
};
exports.default = replaceColor;