205 lines
7.6 KiB
JavaScript
205 lines
7.6 KiB
JavaScript
// 本文件由FirstUI授权予新疆天衡创新研究院有限公司（手机号： 18 6140 72 5 4 9，身份证尾号：5A07X5）专用，请尊重知识产权，勿私下传播，违者追究法律责任。
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/*
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* Copyright (c) 2014 Johannes Mittendorfer (http://johannes-mittendorfer.com)
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* Licensed under the MIT License (LICENSE.txt).
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*
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* Version 2.1.1
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* Build 2014-10-07
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*/
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var EAN13, pluginName;
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pluginName = null;
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"use strict";
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EAN13 = (function() {
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EAN13.prototype.settings = {};
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EAN13.prototype.init = function() {
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var checkDigit, code;
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if (this.number.length === 12) {
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checkDigit = this.generateCheckDigit(this.number);
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this.number += checkDigit;
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}
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if (this.number.length === 13) {
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if (this.validate()) {
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this.settings.onValid.call();
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} else {
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this.settings.onInvalid.call();
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}
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code = this.getCode();
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return this.draw(code);
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} else {
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return this.settings.onError.call();
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}
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};
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EAN13.prototype.getCode = function() {
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var c_encoding, code, countries, i, parts, raw_number, x, y, z;
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x = ["0001101", "0011001", "0010011", "0111101", "0100011", "0110001", "0101111", "0111011", "0110111", "0001011"];
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y = ["0100111", "0110011", "0011011", "0100001", "0011101", "0111001", "0000101", "0010001", "0001001", "0010111"];
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z = ["1110010", "1100110", "1101100", "1000010", "1011100", "1001110", "1010000", "1000100", "1001000", "1110100"];
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countries = ["xxxxxx", "xxyxyy", "xxyyxy", "xxyyyx", "xyxxyy", "xyyxxy", "xyyyxx", "xyxyxy", "xyxyyx", "xyyxyx"];
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code = "";
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c_encoding = countries[parseInt(this.number.substr(0, 1), 10)].split("");
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raw_number = this.number.substr(1);
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parts = raw_number.split("");
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i = 0;
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while (i < 6) {
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if (c_encoding[i] === "x") {
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code += x[parts[i]];
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} else {
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code += y[parts[i]];
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}
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i++;
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}
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i = 6;
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while (i < 12) {
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code += z[parts[i]];
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i++;
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}
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return code;
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};
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EAN13.prototype.clear = function(context) {
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return context.clearRect(0, 0, this.settings.width, this.settings.height);
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};
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EAN13.prototype.draw = function(code) {
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var border_height, chars, context, height, i, item_width, layout, left, lines, offset, prefix, width, x, _i, _ref;
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layout = {
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prefix_offset: 0.06,
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font_stretch: 0.073,
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border_line_height_number: 0.9,
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border_line_height: 1,
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line_height: 0.9,
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font_size: 0.15,
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font_y: 1.03,
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text_offset: 4.5
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};
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width = (this.settings.prefix ? this.settings.width - (this.settings.width * layout.prefix_offset) : this.settings.width);
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if (this.settings.number) {
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border_height = layout.border_line_height_number * this.settings.height;
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height = layout.line_height * border_height;
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} else {
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border_height = layout.border_line_height * this.settings.height;
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height = border_height;
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}
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item_width = width / 95;
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if (this.ctx) {
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context = this.ctx;
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this.clear(context);
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context.setFillStyle(this.settings.color);
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left = this.settings.number && this.settings.prefix ? this.settings.width * layout.prefix_offset : 0;
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lines = code.split("");
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context.fillRect(left, 0, item_width, border_height);
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left = left + item_width * 2;
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context.fillRect(left, 0, item_width, border_height);
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left = left + item_width;
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i = 0;
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while (i < 42) {
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if (lines[i] === "1") {
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context.fillRect(left, 0, Math.floor(item_width) + 1, height);
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}
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left = left + item_width;
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i++;
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}
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left = left + item_width;
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context.fillRect(left, 0, item_width, border_height);
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left = left + item_width * 2;
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context.fillRect(left, 0, item_width, border_height);
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left = left + item_width * 2;
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i = 42;
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while (i < 84) {
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if (lines[i] === "1") {
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context.fillRect(left, 0, Math.floor(item_width) + 1, height);
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}
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left = left + item_width;
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i++;
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}
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context.fillRect(left, 0, item_width, border_height);
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left = left + item_width * 2;
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context.fillRect(left, 0, item_width, border_height);
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if (this.settings.number) {
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context.setFontSize(layout.font_size * height + "px monospace");
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prefix = this.number.substr(0, 1);
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if (this.settings.prefix) {
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context.fillText(prefix, 0, border_height * layout.font_y);
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}
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offset = item_width * layout.text_offset + (this.settings.prefix ? layout.prefix_offset * this.settings.width : 0);
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chars = this.number.substr(1, 6).split("");
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chars.forEach(function(value, key) {
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context.fillText(value, offset, border_height * layout.font_y);
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return offset += layout.font_stretch * width;
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});
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offset = 49 * item_width + (this.settings.prefix ? layout.prefix_offset * this.settings.width : 0) + layout.text_offset;
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chars = this.number.substr(7).split("")
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chars.forEach(function(value, key) {
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context.fillText(value, offset, border_height * layout.font_y);
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return offset += layout.font_stretch * width;
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});
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}
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if (this.settings.debug) {
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for (x = _i = 0, _ref = item_width * 2; _ref > 0 ? _i <= width : _i >= width; x = _i += _ref) {
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context.beginPath();
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context.rect(x, height * 0.4, item_width, height * 0.1);
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context.setFillStyle('red');
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context.fill();
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}
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}
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context.draw()
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return this.settings.onSuccess.call();
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} else {
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return this.settings.onError.call();
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}
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};
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EAN13.prototype.generateCheckDigit = function(number) {
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var chars, counter;
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counter = 0;
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chars = number.split("");
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chars.forEach(function(value, key) {
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if (key % 2 === 0) {
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return counter += parseInt(value, 10);
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} else {
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return counter += 3 * parseInt(value, 10);
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}
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});
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return 10 - (counter % 10) % 10;
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};
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EAN13.prototype.validate = function() {
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return parseInt(this.number.slice(-1), 10) === this.generateCheckDigit(this.number.slice(0, -1));
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};
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function EAN13(number, options, ctx) {
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var option;
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this.number = number;
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this.ctx = ctx
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this.settings = {
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width: 200,
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height: 100,
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number: true,
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prefix: true,
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color: "black",
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debug: false,
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onValid: function() {},
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onInvalid: function() {},
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onSuccess: function() {},
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onError: function() {}
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};
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if (options) {
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for (option in options) {
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this.settings[option] = options[option];
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}
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}
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this._name = pluginName;
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this.init();
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}
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return EAN13;
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})();
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export default EAN13; |