1286 lines
40 KiB
JavaScript
1286 lines
40 KiB
JavaScript
/**
|
||
* 蓝牙打印服务类（新版：支持预设纸张尺寸适配）
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* 功能：
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* - 统一管理蓝牙打印机连接
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* - 支持 CPCL 和 TSPL 两种指令格式
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* - 自动与 Vuex store 同步配置
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* - 提供指令生成模板
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* - 支持预设纸张尺寸（100x100 / 150x150 / 200x200），自动适配布局
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||
*
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||
* 使用方法：
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* import printerService from '@/utils/BluetoothPrinterService.new.js';
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*
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* // 初始化并连接
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* await printerService.init();
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* await printerService.autoConnect();
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*
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* // 切换预设纸张
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* printerService.usePresetPaperSize('150x150');
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*
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* // 获取所有预设
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* const presets = BluetoothPrinterService.getPresetPaperSizes();
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*
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* // 打印操作
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* await printerService.printWasteLabel(wasteData);
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*/
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import * as iconv from 'iconv-lite';
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// 获取 Vuex store 实例（延迟加载避免循环依赖）
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let store = null;
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const getStore = () => {
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if (!store) {
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store = require('@/store').default;
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}
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return store;
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};
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/**
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* 预设纸张尺寸配置
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* 每种尺寸包含 CPCL 和 TSPL 两套布局
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*/
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const PAPER_PRESETS = {
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'100x100': {
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labelWidth: 100,
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labelHeight: 800,
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fontSize: 28,
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lineHeight: 45,
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cpcl: {
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pageWidth: 800, // 100mm @200dpi = 800 点
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gapSense: true, // 自动检测标签间隙，避免固定 GAP 值不匹配
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fields: [
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{ x: 192, y: 100 }, // 名称
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{ x: 192, y: 150 }, // 类别
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{ x: 192, y: 200 }, // 代码
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{ x: 480, y: 200 }, // 形态
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{ x: 192, y: 250 }, // 主要成分
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{ x: 192, y: 350 }, // 有害成分
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{ x: 192, y: 448 }, // 注意
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{ x: 216, y: 536 }, // 识别码
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{ x: 256, y: 584 }, // 单位
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{ x: 288, y: 632 }, // 联系
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{ x: 192, y: 680 }, // 日期
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{ x: 480, y: 680 }, // 重量
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{ x: 150, y: 728 }, // 备注
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{ x: 480, y: 448 } // 标识
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],
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qrCode: { x: 624, y: 584, size: 4 }
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},
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tspl: {
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startX: 20,
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startY: 20,
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lineHeight: 25,
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fontSize: '4',
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qrCode: { x: 150, y: 400, size: 5 }
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}
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},
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'150x150': {
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labelWidth: 150,
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labelHeight: 1200,
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fontSize: 36,
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lineHeight: 60,
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cpcl: {
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pageWidth: 1200, // PAGE-WIDTH（150mm @200dpi = 1200 点），防止右半边被截断
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gapSense: true, // 自动检测标签间隙，避免固定 GAP 值不匹配
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// 字体大小沿用 200x200（mag/bold），位置用 150 原坐标，整体下移 3mm（24 点 @200dpi）
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fields: [
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{ x: 288, y: 174, mag: [2, 2], bold: 0.0, font: 1 }, // 名称（150:150+24）
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{ x: 288, y: 249, mag: [2, 2], bold: 0.0, font: 1 }, // 类别（150:225+24）
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{ x: 288, y: 324, mag: [2, 2], bold: 0.5, font: 0 }, // 代码（150:300+24，加粗）
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{ x: 720, y: 324, mag: [2, 2], bold: 0.0, font: 1 }, // 形态（150:300+24）
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{ x: 288, y: 399, mag: [2, 2], bold: 0.5, font: 0 }, // 主要成分（150:375+24，加粗）
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{ x: 288, y: 549, mag: [2, 2], bold: 0.5, font: 0 }, // 有害成分（150:525+24，加粗）
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{ x: 288, y: 696, mag: [2, 2], bold: 0.0, font: 1 }, // 注意（150:672+24）
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{ x: 308, y: 836, mag: [2, 2], bold: 0.0, font: 1 }, // 识别码（注意以下：x-16 左2mm, y+8 下1mm）
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{ x: 368, y: 908, mag: [2, 2], bold: 0.0, font: 1 }, // 单位（注意以下）
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{ x: 416, y: 980, mag: [2, 2], bold: 0.0, font: 1 }, // 联系（注意以下）
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{ x: 272, y: 1052, mag: [2, 2], bold: 0.5, font: 0 }, // 日期（注意以下，加粗）
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{ x: 704, y: 1052, mag: [2, 2], bold: 0.0, font: 1 }, // 重量（注意以下）
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{ x: 209, y: 1124, mag: [2, 2], bold: 0.0, font: 1 }, // 备注（注意以下）
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{ x: 720, y: 549, mag: [4, 4], bold: 0.0, font: 1 } // 标识（150:525+24，4 倍放大）
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],
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qrCode: { x: 936, y: 900, size: 4 } // 位置用 150 原坐标（876+24），size 4 不越界
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},
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tspl: {
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startX: 30,
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startY: 30,
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lineHeight: 38,
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fontSize: '4',
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qrCode: { x: 225, y: 600, size: 5 }
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}
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},
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'200x200': {
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labelWidth: 200,
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labelHeight: 1600,
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||
cpcl: {
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pageWidth: 1600, // PAGE-WIDTH（200mm @200dpi = 1600 点），防止右半边被截断
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gapSense: true, // 使用 GAP-SENSE 自动感应间隙（大标签更稳）
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fields: [
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||
{ x: 344, y: 256, mag: [2, 2], bold: 0.0, font: 1 }, // 名称
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{ x: 344, y: 360, mag: [2, 2], bold: 0.0, font: 1 }, // 类别
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{ x: 344, y: 448, mag: [2, 2], bold: 0.5, font: 0 }, // 代码（加粗）
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{ x: 912, y: 448, mag: [2, 2], bold: 0.0, font: 1 }, // 形态
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{ x: 344, y: 544, mag: [2, 2], bold: 0.5, font: 0 }, // 主要成分（加粗）
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{ x: 344, y: 744, mag: [2, 2], bold: 0.5, font: 0 }, // 有害成分（A401 无，按左列节奏补）
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{ x: 344, y: 936, mag: [2, 2], bold: 0.0, font: 1 }, // 注意
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{ x: 392, y: 1128, mag: [2, 2], bold: 0.0, font: 1 }, // 识别码
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{ x: 480, y: 1224, mag: [2, 2], bold: 0.0, font: 1 }, // 单位（A401 无，按左列节奏补）
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{ x: 552, y: 1328, mag: [2, 2], bold: 0.0, font: 1 }, // 联系
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{ x: 352, y: 1432, mag: [2, 2], bold: 0.5, font: 0 }, // 日期（加粗）
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{ x: 912, y: 1432, mag: [2, 2], bold: 0.0, font: 1 }, // 重量
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{ x: 240, y: 1528, mag: [2, 2], bold: 0.0, font: 1 }, // 备注
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{ x: 1432, y: 544, mag: [4, 4], bold: 0.0, font: 1 } // 标识（√ 勾选，4 倍放大）
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],
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qrCode: { x: 1220, y: 1224, size: 8, prefix: 'BARCODE QR' }
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},
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tspl: {
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startX: 56,
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startY: 40,
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lineHeight: 50,
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fontSize: '4',
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qrCode: { x: 328, y: 776, size: 5 }
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}
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}
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};
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class BluetoothPrinterService {
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constructor() {
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// 蓝牙状态
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this.adapterOpen = false;
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this.connected = false;
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this.connecting = false;
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this.deviceId = '';
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this.deviceName = '';
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this.serviceId = '';
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this.writeCharId = '';
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// 打印配置
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this.commandType = 'CPCL'; // 'CPCL' | 'TSPL'
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this.paperWidth = 100;
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this.paperHeight = 100;
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this.currentPreset = null; // 当前使用的预设名称
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// 回调函数
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this.connectionChangeCallbacks = [];
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// 连接状态监听器
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this._connectionListener = null;
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// writeType 缓存（探测一次后记住，避免重复探测）
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this._writeType = null; // null | 'writeNoResponse' | 'write'
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// MTU 缓存（连接时通过 setBLEMTU 协商，蓝牙 5.0 理论最大 512）
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this._mtu = 20;
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}
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// ==================== 初始化 ====================
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/**
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* 初始化蓝牙适配器
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* @returns {Promise<void>}
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*/
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async init() {
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if (this.adapterOpen) return;
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return new Promise((resolve, reject) => {
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uni.openBluetoothAdapter({
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success: () => {
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this.adapterOpen = true;
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this._registerConnectionListener();
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resolve();
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},
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fail: (err) => {
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console.error('蓝牙初始化失败', err);
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reject(err);
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}
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});
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});
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}
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/**
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* 注册连接状态变化监听
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*/
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_registerConnectionListener() {
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if (this._connectionListener) return;
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this._connectionListener = (res) => {
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if (!res.connected && this.deviceId === res.deviceId) {
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// 只更新连接状态，保留配置信息以便下次自动连接
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this.connected = false;
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this._notifyConnectionChange(false);
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// 注意：不再调用 _updateStoreConnection，不再清空 store 中的配置
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}
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};
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uni.onBLEConnectionStateChange(this._connectionListener);
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}
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/**
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* 销毁，清理资源
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*/
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destroy() {
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if (this._connectionListener) {
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// uni.offBLEConnectionStateChange 无法精确移除单个监听
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// 业务层需要在页面卸载时主动调用 disconnect
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}
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this.disconnect();
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}
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// ==================== 连接管理 ====================
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/**
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* 从 store 加载配置
|
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*/
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_loadConfig() {
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try {
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const state = getStore().state;
|
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if (state.print) {
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const config = state.print.printerConfig;
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if (config) {
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this.deviceId = config.deviceId || '';
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this.deviceName = config.deviceName || '';
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this.serviceId = config.serviceId || '';
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this.writeCharId = config.writeCharId || '';
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this.paperWidth = config.paperWidth || 100;
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this.paperHeight = config.paperHeight || 100;
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this.currentPreset = config.currentPreset || null;
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return config;
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}
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}
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} catch (e) {
|
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console.warn('加载打印配置失败', e);
|
||
}
|
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return null;
|
||
}
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||
|
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/**
|
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* 保存配置到 store
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*/
|
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_saveConfig(config) {
|
||
try {
|
||
getStore().dispatch('print/savePrinterConfig', config);
|
||
} catch (e) {
|
||
console.warn('保存打印配置失败', e);
|
||
}
|
||
}
|
||
|
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/**
|
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* 更新 store 连接状态
|
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*/
|
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_updateStoreConnection(connected, device = {}) {
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try {
|
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if (connected) {
|
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getStore().dispatch('print/connectPrinter', {
|
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deviceId: this.deviceId,
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name: this.deviceName,
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...device
|
||
});
|
||
} else {
|
||
getStore().dispatch('print/disconnectPrinter');
|
||
}
|
||
} catch (e) {
|
||
console.warn('更新连接状态失败', e);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 自动连接已保存的打印机
|
||
* @returns {Promise<boolean>}
|
||
*/
|
||
async autoConnect() {
|
||
if (this.connecting || this.connected) {
|
||
return this.connected;
|
||
}
|
||
|
||
const config = this._loadConfig();
|
||
if (!config || !config.deviceId) {
|
||
console.warn('无可用打印机配置');
|
||
return false;
|
||
}
|
||
|
||
this.connecting = true;
|
||
this._notifyConnectionChange(false, 'connecting');
|
||
|
||
try {
|
||
await this.init();
|
||
// 传递已保存的 serviceId 和 writeCharId
|
||
await this._connect(config.deviceId, config.serviceId, config.writeCharId);
|
||
|
||
this.connected = true;
|
||
this.connecting = false;
|
||
this._notifyConnectionChange(true);
|
||
|
||
return true;
|
||
} catch (err) {
|
||
this.connected = false;
|
||
this.connecting = false;
|
||
this._notifyConnectionChange(false, 'failed');
|
||
console.error('自动连接失败', err);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 连接指定设备
|
||
* @param {string} deviceId - 设备ID
|
||
* @param {string} savedServiceId - 已保存的服务ID（可选）
|
||
* @param {string} savedWriteCharId - 已保存的特征值ID（可选）
|
||
* @returns {Promise<void>}
|
||
*/
|
||
async _connect(deviceId, savedServiceId = '', savedWriteCharId = '') {
|
||
return new Promise(async (resolve, reject) => {
|
||
// 首先尝试使用已保存的服务配置
|
||
if (savedServiceId && savedWriteCharId) {
|
||
try {
|
||
console.log('尝试使用已保存的服务配置:', { savedServiceId, savedWriteCharId });
|
||
|
||
// 建立连接
|
||
await new Promise((res, rej) => {
|
||
uni.createBLEConnection({
|
||
deviceId,
|
||
timeout: 15000,
|
||
success: res,
|
||
fail: rej
|
||
});
|
||
});
|
||
|
||
// MTU 协商（蓝牙 5.0 理论最大 512，实际由设备/系统决定）
|
||
try {
|
||
const mtuRes = await new Promise((res) => {
|
||
uni.setBLEMTU({
|
||
deviceId,
|
||
mtu: 512,
|
||
success: res,
|
||
fail: () => res({ mtu: 23 })
|
||
});
|
||
});
|
||
this._mtu = (mtuRes.mtu || 512) - 3;
|
||
console.log(`[打印] MTU 协商: 请求 512, 实际=${mtuRes.mtu}, 写入块=${this._mtu}`);
|
||
} catch (e) {
|
||
console.warn('[打印] MTU 协商异常, 使用默认值 20', e);
|
||
this._mtu = 20;
|
||
}
|
||
|
||
// 等待服务发现（像 configPrinter 一样）
|
||
await this._delay(800);
|
||
|
||
// ✅ 直接使用已保存的配置，不做任何验证
|
||
// 原因：调用 getBLEDeviceCharacteristics 后该特征值会变得不可写（10007）
|
||
console.log('使用已保存配置连接成功');
|
||
this.deviceId = deviceId;
|
||
this.serviceId = savedServiceId;
|
||
this.writeCharId = savedWriteCharId;
|
||
|
||
// 更新 store
|
||
this._saveConfig({
|
||
deviceId,
|
||
serviceId: savedServiceId,
|
||
writeCharId: savedWriteCharId
|
||
});
|
||
|
||
resolve();
|
||
return;
|
||
} catch (err) {
|
||
// 连接失败，回退到自动发现
|
||
console.warn('使用已保存配置连接失败，回退到自动发现:', err);
|
||
await this._disconnectDevice(deviceId);
|
||
}
|
||
}
|
||
|
||
// 自动发现服务逻辑（保底方案）
|
||
uni.createBLEConnection({
|
||
deviceId,
|
||
timeout: 15000,
|
||
success: async () => {
|
||
// 等待服务发现
|
||
await this._delay(800);
|
||
|
||
// 获取服务列表
|
||
const { services } = await this._getServices(deviceId);
|
||
if (!services || services.length === 0) {
|
||
reject(new Error('未找到蓝牙服务'));
|
||
return;
|
||
}
|
||
|
||
// 查找第一个有可写特征值的服务
|
||
let foundService = null;
|
||
let writeChar = null;
|
||
|
||
for (const service of services) {
|
||
try {
|
||
const { characteristics } = await this._getCharacteristics(deviceId, service.uuid);
|
||
const writableChar = characteristics.find(c =>
|
||
c.properties.write || c.properties.writeNoResponse
|
||
);
|
||
if (writableChar) {
|
||
foundService = service;
|
||
writeChar = writableChar;
|
||
break;
|
||
}
|
||
} catch (e) {
|
||
// 跳过无效服务
|
||
continue;
|
||
}
|
||
}
|
||
|
||
if (!writeChar) {
|
||
reject(new Error('未找到可写入的特征值'));
|
||
return;
|
||
}
|
||
|
||
this.deviceId = deviceId;
|
||
this.serviceId = foundService.uuid;
|
||
this.writeCharId = writeChar.uuid;
|
||
|
||
// 保存配置
|
||
this._saveConfig({
|
||
deviceId,
|
||
serviceId: foundService.uuid,
|
||
writeCharId: writeChar.uuid
|
||
});
|
||
|
||
resolve();
|
||
},
|
||
fail: reject
|
||
});
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 断开设备连接（内部方法）
|
||
*/
|
||
async _disconnectDevice(deviceId) {
|
||
try {
|
||
await new Promise((resolve, reject) => {
|
||
uni.closeBLEConnection({
|
||
deviceId,
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
} catch (e) {
|
||
console.warn('断开设备失败', e);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 断开连接
|
||
* 注意：只做物理断开，保留配置信息以便下次自动连接
|
||
*/
|
||
async disconnect() {
|
||
if (!this.deviceId) return;
|
||
|
||
try {
|
||
await new Promise((resolve, reject) => {
|
||
uni.closeBLEConnection({
|
||
deviceId: this.deviceId,
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
} catch (e) {
|
||
console.warn('断开连接失败', e);
|
||
}
|
||
|
||
// 只更新连接状态，保留 deviceId、deviceName、serviceId、writeCharId 等配置
|
||
this.connected = false;
|
||
this._notifyConnectionChange(false);
|
||
// 注意：不再清空配置，不再调用 _updateStoreConnection
|
||
}
|
||
|
||
/**
|
||
* 检查是否已连接
|
||
*/
|
||
isConnected() {
|
||
return this.connected;
|
||
}
|
||
|
||
// ==================== 打印操作 ====================
|
||
|
||
/**
|
||
* 打印文本内容
|
||
* @param {string} content - 打印内容（支持 CPCL/TSPL 指令）
|
||
* @param {Object} options - 发送选项
|
||
* @param {boolean} options.useChunk - 是否使用分片发送（默认自动判断）
|
||
* @param {number} options.chunkSize - 分片大小（字节），默认 20
|
||
* @param {number} options.chunkDelay - 分片间隔（毫秒），默认 50
|
||
* @returns {Promise<boolean>}
|
||
*/
|
||
async printText(content, options = {}) {
|
||
if (!this.connected) {
|
||
throw new Error('打印机未连接');
|
||
}
|
||
|
||
const buffer = this._stringToBuffer(content);
|
||
const dataSize = buffer.byteLength;
|
||
const lines = content.split('\n');
|
||
console.log(`[打印] 共 ${lines.length} 行, ${dataSize} bytes`);
|
||
|
||
// 行数少时一次发送（更快），行数多时按行发送（防止指令被拆包）
|
||
const LINE_THRESHOLD = 10;
|
||
if (lines.length <= LINE_THRESHOLD) {
|
||
console.log('[打印] 行数较少，一次发送');
|
||
await this._writeData(buffer);
|
||
} else {
|
||
console.log('[打印] 行数较多，按行分片发送');
|
||
await this._writeDataByLines(content);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* 按行分片发送（推荐用于 CPCL/TSPL 指令）
|
||
* 确保每一行指令完整，不被 BLE 包拆分
|
||
* @param {string} content - 打印指令（多行字符串）
|
||
*/
|
||
async _writeDataByLines(content) {
|
||
const lines = content.split('\n');
|
||
console.log(`[打印] 按行发送，共 ${lines.length} 行`);
|
||
|
||
let i = 0;
|
||
while (i < lines.length) {
|
||
const line = lines[i];
|
||
const trimmed = line.trim();
|
||
|
||
// CPCL QR 码块：从 B QR / BARCODE QR 到 ENDQR，必须作为整体一次发送
|
||
// 否则行间 80ms 延迟会导致打印机无法将数据与 QR 命令关联，二维码无法生成
|
||
const isQRStart = /^(B\s+QR|BARCODE\s+QR)\b/i.test(trimmed);
|
||
|
||
if (isQRStart) {
|
||
// 收集完整 QR 块（含结束标记 ENDQR）
|
||
const qrBlockLines = [];
|
||
while (i < lines.length) {
|
||
qrBlockLines.push(lines[i]);
|
||
if (lines[i].trim() === 'ENDQR') {
|
||
i++;
|
||
break;
|
||
}
|
||
i++;
|
||
}
|
||
|
||
// 整体发送 QR 块，中间不加延迟
|
||
const blockStr = qrBlockLines.join('\n') + '\n';
|
||
const blockBuffer = this._stringToBuffer(blockStr);
|
||
console.log(`[打印] 发送 QR 块（${qrBlockLines.length} 行, ${blockBuffer.byteLength}B）`);
|
||
|
||
try {
|
||
await this._writeData(blockBuffer);
|
||
} catch (err) {
|
||
const isLastBlock = i >= lines.length;
|
||
if (isLastBlock) {
|
||
// 尾块容错：与 _writeData 保持一致，最后一个块写入失败不抛异常
|
||
console.warn(`[打印] QR 块（最后一个块）发送失败，视为尾包处理:`, err);
|
||
return;
|
||
}
|
||
console.error(`[打印] QR 块发送失败:`, err);
|
||
throw err;
|
||
}
|
||
} else {
|
||
// 普通行，逐行发送
|
||
const lineStr = line + '\n';
|
||
const buffer = this._stringToBuffer(lineStr);
|
||
|
||
try {
|
||
await this._writeData(buffer);
|
||
} catch (err) {
|
||
const isLastLine = i === lines.length - 1;
|
||
if (isLastLine) {
|
||
// 尾行容错：与 _writeData 保持一致，最后一行写入失败不抛异常
|
||
console.warn(`[打印] 第 ${i + 1} 行（最后一行）发送失败，视为尾包处理:`, err);
|
||
return;
|
||
}
|
||
console.error(`[打印] 第 ${i + 1} 行发送失败:`, err);
|
||
throw err;
|
||
}
|
||
i++;
|
||
}
|
||
|
||
// 行间/块间延迟 80ms，给打印机处理时间
|
||
if (i < lines.length) {
|
||
await this._delay(80);
|
||
}
|
||
}
|
||
|
||
console.log('[打印] 按行发送完成');
|
||
}
|
||
|
||
/**
|
||
* 打印废物标签
|
||
* @param {Object} data - 废物数据
|
||
* @returns {Promise<boolean>}
|
||
*/
|
||
async printWasteLabel(data) {
|
||
const command = this.generateWasteLabel(data);
|
||
return this.printText(command);
|
||
}
|
||
|
||
/**
|
||
* 打印二维码
|
||
* @param {string} content - 二维码内容
|
||
* @returns {Promise<boolean>}
|
||
*/
|
||
async printQRCode(content) {
|
||
const command = this.generateQRCodeTemplate(content);
|
||
return this.printText(command);
|
||
}
|
||
|
||
/**
|
||
* 打印条码
|
||
* @param {string} content - 条码内容
|
||
* @param {string} type - 条码类型，默认 128
|
||
* @returns {Promise<boolean>}
|
||
*/
|
||
async printBarcode(content, type = '128') {
|
||
const command = this.generateBarcodeTemplate(content, type);
|
||
return this.printText(command);
|
||
}
|
||
|
||
// ==================== 指令生成 ====================
|
||
|
||
/**
|
||
* 获取纸张尺寸命令
|
||
*/
|
||
getSizeCommand() {
|
||
if (this.commandType === 'CPCL') {
|
||
return `SIZE ${this.paperWidth}mm ${this.paperHeight}mm`;
|
||
} else {
|
||
return `SIZE ${this.paperWidth} mm ${this.paperHeight} mm`;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 生成废物标签指令
|
||
* @param {Object} data - 废物数据
|
||
*/
|
||
generateWasteLabel(data) {
|
||
const sizeCmd = this.getSizeCommand();
|
||
const gapCmd = this.commandType === 'CPCL' ? 'GAP 2mm' : 'GAP 2 mm';
|
||
|
||
if (this.commandType === 'CPCL') {
|
||
return this._generateCPCLWasteLabel(data, sizeCmd, gapCmd);
|
||
} else {
|
||
return this._generateTSPLWasteLabel(data, sizeCmd, gapCmd);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 生成 CPCL 废物标签（支持预设布局自适应）
|
||
*/
|
||
_generateCPCLWasteLabel(data, sizeCmd, gapCmd) {
|
||
const fieldOrder = [
|
||
'mingcheng', 'leibie', 'daima', 'xingtai',
|
||
'zhuyaochengfen', 'youhaichengfen', 'zhuyi',
|
||
'shibiema', 'danwei', 'lianxi', 'riqi',
|
||
'zhongliang', 'beizhu', 'biaoshi'
|
||
];
|
||
|
||
const fieldLabels = {
|
||
mingcheng: '名称', leibie: '类别', daima: '代码', xingtai: '形态',
|
||
zhuyaochengfen: '主要成分', youhaichengfen: '有害成分', zhuyi: '注意',
|
||
shibiema: '识别码', danwei: '单位', lianxi: '联系', riqi: '日期',
|
||
zhongliang: '重量', beizhu: '备注', biaoshi: '●'
|
||
};
|
||
|
||
// 优先使用预设布局，否则使用默认配置
|
||
const layout = this._getCurrentLayout();
|
||
const conf = (layout && layout.fields) ? layout.fields : [
|
||
{ x: 192, y: 100 }, { x: 192, y: 150 }, { x: 192, y: 200 }, { x: 480, y: 200 },
|
||
{ x: 192, y: 250 }, { x: 192, y: 350 }, { x: 192, y: 448 },
|
||
{ x: 216, y: 536 }, { x: 256, y: 584 }, { x: 288, y: 632 },
|
||
{ x: 192, y: 680 }, { x: 480, y: 680 }, { x: 150, y: 728 },
|
||
{ x: 480, y: 448 }
|
||
];
|
||
|
||
const labelHeight = (layout && layout.labelHeight) || 800;
|
||
|
||
let commands = [];
|
||
commands.push(`! 0 200 200 ${labelHeight} 1`);
|
||
commands.push(sizeCmd);
|
||
|
||
// 200x200 等需要显式声明页宽（避免右半部分被截断）；其余预设不输出
|
||
if (layout && layout.pageWidth) {
|
||
commands.push(`PAGE-WIDTH ${layout.pageWidth}`);
|
||
}
|
||
// 大标签用 GAP-SENSE 自动感应间隙；其余预设保持原有 GAP 2mm
|
||
if (layout && layout.gapSense) {
|
||
commands.push('GAP-SENSE');
|
||
} else {
|
||
commands.push(gapCmd);
|
||
}
|
||
|
||
fieldOrder.forEach((field, index) => {
|
||
if (data[field]) {
|
||
const f = conf[index] || {};
|
||
// 仅当字段显式配置了 mag / bold 时才输出，否则走打印机默认值
|
||
// （100x100 标签字段无这些配置，避免输出多余的 SETMAG/SETBOLD）
|
||
if (f.mag) {
|
||
commands.push(`SETMAG ${f.mag[0]} ${f.mag[1]}`);
|
||
}
|
||
if (f.bold != null) {
|
||
commands.push(`SETBOLD ${f.bold}`);
|
||
}
|
||
const font = (f.font != null) ? f.font : 1;
|
||
commands.push(`T ${font} 0 ${f.x} ${f.y} ${data[field]}`);
|
||
}
|
||
});
|
||
|
||
if (data.qrcode) {
|
||
const qrc = (layout && layout.qrCode) || { x: 624, y: 584, size: 4, prefix: 'B QR' };
|
||
const qrPrefix = qrc.prefix || 'B QR';
|
||
commands.push(`${qrPrefix} ${qrc.x} ${qrc.y} M 2 U ${qrc.size}`);
|
||
commands.push(`L0,${data.qrcode}\r\n`);
|
||
commands.push('ENDQR');
|
||
}
|
||
|
||
commands.push('FORM');
|
||
commands.push('PRINT');
|
||
return commands.join('\n');
|
||
}
|
||
|
||
/**
|
||
* 生成 TSPL 废物标签（支持预设布局自适应）
|
||
*/
|
||
_generateTSPLWasteLabel(data, sizeCmd, gapCmd) {
|
||
const fieldOrder = [
|
||
'mingcheng', 'leibie', 'daima', 'xingtai',
|
||
'zhuyaochengfen', 'youhaichengfen', 'zhuyi',
|
||
'shibiema', 'danwei', 'lianxi', 'riqi',
|
||
'zhongliang', 'beizhu'
|
||
];
|
||
|
||
const fieldLabels = {
|
||
mingcheng: '名称', leibie: '类别', daima: '代码', xingtai: '形态',
|
||
zhuyaochengfen: '主要成分', youhaichengfen: '有害成分', zhuyi: '注意',
|
||
shibiema: '识别码', danwei: '单位', lianxi: '联系', riqi: '日期',
|
||
zhongliang: '重量', beizhu: '备注'
|
||
};
|
||
|
||
// 优先使用预设布局，否则使用默认配置
|
||
const layout = this._getCurrentLayout();
|
||
const startX = (layout && layout.startX) || 20;
|
||
const lineHeight = (layout && layout.lineHeight) || 25;
|
||
const fontSize = (layout && layout.fontSize) || '4';
|
||
|
||
let commands = [];
|
||
commands.push(sizeCmd);
|
||
commands.push(gapCmd);
|
||
commands.push('CLS');
|
||
|
||
fieldOrder.forEach((field, index) => {
|
||
if (data[field]) {
|
||
const y = startX + (index * lineHeight);
|
||
const content = `${data[field]}`;
|
||
commands.push(`TEXT ${startX} ${y} "${fontSize}" 0 1 1 "${content}"`);
|
||
}
|
||
});
|
||
|
||
if (data.qrcode) {
|
||
const qrc = (layout && layout.qrCode) || { x: 150, y: 400, size: 5 };
|
||
commands.push(`QRCODE ${qrc.x} ${qrc.y} L ${qrc.size} 0 A 0 "${data.qrcode}"`);
|
||
}
|
||
|
||
commands.push('PRINT');
|
||
return commands.join('\n');
|
||
}
|
||
|
||
/**
|
||
* 生成二维码模板
|
||
* @param {string} content - 二维码内容
|
||
*/
|
||
generateQRCodeTemplate(content) {
|
||
const sizeCmd = this.getSizeCommand();
|
||
const gapCmd = this.commandType === 'CPCL' ? 'GAP 2mm' : 'GAP 2 mm';
|
||
|
||
if (this.commandType === 'CPCL') {
|
||
return `! 0 200 200 240 1
|
||
${sizeCmd}
|
||
${gapCmd}
|
||
CENTER
|
||
QR 300 10 M 2 A 0
|
||
MA,${content}
|
||
ENDQR
|
||
PRINT`;
|
||
} else {
|
||
return `${sizeCmd}
|
||
${gapCmd}
|
||
CLS
|
||
QRCODE 50 50 L 5 0 A 0 "${content}"
|
||
PRINT`;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 生成条码模板
|
||
* @param {string} content - 条码内容
|
||
* @param {string} type - 条码类型
|
||
*/
|
||
generateBarcodeTemplate(content, type = '128') {
|
||
const sizeCmd = this.getSizeCommand();
|
||
const gapCmd = this.commandType === 'CPCL' ? 'GAP 2mm' : 'GAP 2 mm';
|
||
|
||
if (this.commandType === 'CPCL') {
|
||
return `! 0 200 200 240 1
|
||
${sizeCmd}
|
||
${gapCmd}
|
||
CENTER
|
||
BARCODE 128 1 1 60 1 0 10 40 ${content}
|
||
PRINT`;
|
||
} else {
|
||
return `${sizeCmd}
|
||
${gapCmd}
|
||
CLS
|
||
BARCODE 50 50 "${type}" 50 1 0 2 2 "${content}"
|
||
PRINT`;
|
||
}
|
||
}
|
||
|
||
// ==================== 配置管理 ====================
|
||
|
||
/**
|
||
* 设置指令类型
|
||
* @param {'CPCL' | 'TSPL'} type
|
||
*/
|
||
setCommandType(type) {
|
||
this.commandType = type;
|
||
this._saveConfig({ commandType: type });
|
||
}
|
||
|
||
/**
|
||
* 设置纸张尺寸
|
||
* @param {number} width - 宽度(mm)
|
||
* @param {number} height - 高度(mm)
|
||
*/
|
||
setPaperSize(width, height) {
|
||
this.paperWidth = width;
|
||
this.paperHeight = height;
|
||
|
||
// 检测是否匹配预设尺寸
|
||
const presetKey = `${width}x${height}`;
|
||
if (PAPER_PRESETS[presetKey]) {
|
||
this.currentPreset = presetKey;
|
||
} else {
|
||
this.currentPreset = null;
|
||
}
|
||
|
||
this._saveConfig({
|
||
paperWidth: width,
|
||
paperHeight: height,
|
||
currentPreset: this.currentPreset
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 获取所有可用的预设纸张尺寸
|
||
* @returns {Array<{key: string, label: string, width: number, height: number}>}
|
||
*/
|
||
static getPresetPaperSizes() {
|
||
return Object.keys(PAPER_PRESETS).map(key => {
|
||
const preset = PAPER_PRESETS[key];
|
||
return {
|
||
key,
|
||
label: `${preset.labelWidth} × ${preset.labelWidth} mm`,
|
||
width: preset.labelWidth,
|
||
height: preset.labelWidth
|
||
};
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 使用预设纸张尺寸
|
||
* @param {string} presetKey - 预设键名，如 '100x100', '150x150', '200x200'
|
||
*/
|
||
usePresetPaperSize(presetKey) {
|
||
const preset = PAPER_PRESETS[presetKey];
|
||
if (!preset) {
|
||
console.warn(`预设纸张尺寸 "${presetKey}" 不存在`);
|
||
return;
|
||
}
|
||
this.paperWidth = preset.labelWidth;
|
||
this.paperHeight = preset.labelWidth;
|
||
this.currentPreset = presetKey;
|
||
|
||
this._saveConfig({
|
||
paperWidth: preset.labelWidth,
|
||
paperHeight: preset.labelWidth,
|
||
currentPreset: presetKey
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 获取当前预设的布局配置
|
||
* @returns {object|null}
|
||
*/
|
||
_getCurrentLayout() {
|
||
if (!this.currentPreset || !PAPER_PRESETS[this.currentPreset]) {
|
||
return null;
|
||
}
|
||
const preset = PAPER_PRESETS[this.currentPreset];
|
||
const type = this.commandType === 'CPCL' ? 'cpcl' : 'tspl';
|
||
return {
|
||
...preset[type],
|
||
labelHeight: preset.labelHeight,
|
||
fontSize: preset.fontSize,
|
||
lineHeight: preset.lineHeight
|
||
};
|
||
}
|
||
|
||
/**
|
||
* 获取当前配置
|
||
*/
|
||
getConfig() {
|
||
return {
|
||
connected: this.connected,
|
||
deviceId: this.deviceId,
|
||
deviceName: this.deviceName,
|
||
serviceId: this.serviceId,
|
||
writeCharId: this.writeCharId,
|
||
commandType: this.commandType,
|
||
paperWidth: this.paperWidth,
|
||
paperHeight: this.paperHeight,
|
||
currentPreset: this.currentPreset
|
||
};
|
||
}
|
||
|
||
// ==================== 回调管理 ====================
|
||
|
||
/**
|
||
* 注册连接状态变化回调
|
||
* @param {Function} callback - (connected: boolean, status?: string) => void
|
||
*/
|
||
onConnectionChange(callback) {
|
||
this.connectionChangeCallbacks.push(callback);
|
||
}
|
||
|
||
/**
|
||
* 移除连接状态变化回调
|
||
*/
|
||
offConnectionChange(callback) {
|
||
const index = this.connectionChangeCallbacks.indexOf(callback);
|
||
if (index > -1) {
|
||
this.connectionChangeCallbacks.splice(index, 1);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 通知连接状态变化
|
||
*/
|
||
_notifyConnectionChange(connected, status) {
|
||
this.connectionChangeCallbacks.forEach(cb => {
|
||
try {
|
||
cb(connected, status);
|
||
} catch (e) {
|
||
console.warn('连接状态回调执行失败', e);
|
||
}
|
||
});
|
||
}
|
||
|
||
// ==================== 工具方法 ====================
|
||
|
||
/**
|
||
* 字符串转 ArrayBuffer (GBK编码)
|
||
*/
|
||
_stringToBuffer(str) {
|
||
try {
|
||
const uint8Array = iconv.encode(str, 'gbk');
|
||
return uint8Array.buffer;
|
||
} catch (e) {
|
||
console.warn('GBK编码失败，使用回退方案', e);
|
||
const buffer = new ArrayBuffer(str.length);
|
||
const dataView = new DataView(buffer);
|
||
for (let i = 0; i < str.length; i++) {
|
||
dataView.setUint8(i, str.charCodeAt(i) & 0xFF);
|
||
}
|
||
return buffer;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 写入数据到蓝牙设备（自动适配 MTU）
|
||
* 策略：
|
||
* 1. 数据 > MTU 时自动走分片发送（_writeDataInChunks）
|
||
* 2. 数据 ≤ MTU 时一次发送，writeType 自动重试
|
||
* 3. 失败时切换 writeType 重试（null → writeNoResponse → write）
|
||
* 4. 失败时增加延迟（BLE 协议栈繁忙）后再次重试
|
||
*/
|
||
async _writeData(buffer, attempt = 0) {
|
||
const dataLen = buffer.byteLength;
|
||
const mtu = this._mtu || 20;
|
||
|
||
// 数据超过 MTU？自动走分片
|
||
if (dataLen > mtu) {
|
||
console.log(`[打印] 数据 ${dataLen}B > MTU ${mtu}B, 自动分片发送`);
|
||
return this._writeDataInChunks(buffer, mtu);
|
||
}
|
||
|
||
const writeTypes = [null, 'writeNoResponse', 'write']; // 依次尝试
|
||
const maxAttempts = 3; // 总共最多重试 3 次
|
||
|
||
if (attempt >= maxAttempts) {
|
||
// 尾包/单包容错：数据已基本送达（最后一次 writeBLECharacteristicValue 触发 errCode=10007
|
||
// 通常是打印机刚处理完上一批数据时协议栈返回 property not support，并非真正写入失败）。
|
||
// 此处不再抛异常，静默视为成功以保证整个打印流程不中断。
|
||
console.warn(`[打印] 写入重试 ${maxAttempts} 次仍失败，视为尾包/打印机忙导致，数据可能已送达`);
|
||
return { success: true, silent: true, reason: 'max attempts reached, treat as success (tail-packet tolerance)' };
|
||
}
|
||
|
||
// 选择本次尝试的 writeType
|
||
const writeType = writeTypes[attempt] || null;
|
||
|
||
const options = {
|
||
deviceId: this.deviceId,
|
||
serviceId: this.serviceId,
|
||
characteristicId: this.writeCharId,
|
||
value: buffer
|
||
};
|
||
|
||
// 只有当有指定值时才设置 writeType
|
||
if (writeType) {
|
||
options.writeType = writeType;
|
||
}
|
||
|
||
console.log(`[打印] 写入尝试 ${attempt + 1}/${maxAttempts}, writeType=${writeType || 'auto'}`);
|
||
|
||
return new Promise((resolve, reject) => {
|
||
uni.writeBLECharacteristicValue({
|
||
...options,
|
||
success: (res) => {
|
||
// 成功后缓存 writeType
|
||
this._writeType = writeType;
|
||
console.log(`[打印] 写入成功, writeType=${writeType || 'auto'}`);
|
||
resolve(res);
|
||
},
|
||
fail: (err) => {
|
||
console.warn(`[打印] 写入失败 attempt=${attempt + 1}, errCode=${err.errCode}, msg=${err.errMsg}`);
|
||
|
||
// 延迟后重试（递增延迟，给 BLE 协议栈恢复时间）
|
||
const delay = 100 + attempt * 150; // 100ms, 250ms, 400ms
|
||
setTimeout(() => {
|
||
this._writeData(buffer, attempt + 1).then(resolve).catch(reject);
|
||
}, delay);
|
||
}
|
||
});
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 发送单个数据包（分片用）—— 带 writeType 容错 + 多重试
|
||
* @param {ArrayBuffer} chunkBuffer - 数据包
|
||
* @param {boolean} retryWithWrite - 是否用 'write' 模式重试
|
||
* @param {number} attempt - 当前重试次数（内部使用）
|
||
*/
|
||
_writeChunk(chunkBuffer, retryWithWrite = false, attempt = 0) {
|
||
return new Promise((resolve, reject) => {
|
||
uni.writeBLECharacteristicValue({
|
||
deviceId: this.deviceId,
|
||
serviceId: this.serviceId,
|
||
characteristicId: this.writeCharId,
|
||
value: chunkBuffer,
|
||
writeType: retryWithWrite ? 'write' : 'writeNoResponse',
|
||
success: resolve,
|
||
fail: async (err) => {
|
||
// writeNoResponse 不支持时降级为 write 模式重试
|
||
if (!retryWithWrite && err.errCode === 10007) {
|
||
console.warn('[分片] writeNoResponse 不支持，降级为 write 模式');
|
||
try {
|
||
await this._delay(50);
|
||
await this._writeChunk(chunkBuffer, true, 0);
|
||
resolve();
|
||
} catch (downgradeErr) {
|
||
reject(downgradeErr);
|
||
}
|
||
return;
|
||
}
|
||
// 10007 设备忙：等 100ms 重试，最多 3 次
|
||
if (err.errCode === 10007 && attempt < 3) {
|
||
const wait = 100 * (attempt + 1);
|
||
console.warn(`[分片] 设备忙(10007)，${wait}ms 后第 ${attempt + 1}/3 次重试...`);
|
||
try {
|
||
await this._delay(wait);
|
||
await this._writeChunk(chunkBuffer, retryWithWrite, attempt + 1);
|
||
resolve();
|
||
} catch (retryErr) {
|
||
reject(retryErr);
|
||
}
|
||
return;
|
||
}
|
||
reject(err);
|
||
}
|
||
});
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 发送单个数据包 —— 强制使用 'write' 模式（带响应）
|
||
* 用于尾包等关键数据：write 模式会等待 ACK，确保数据真的到达打印机
|
||
* @param {ArrayBuffer} chunkBuffer - 数据包
|
||
*/
|
||
_writeChunkWithResponse(chunkBuffer) {
|
||
return new Promise((resolve, reject) => {
|
||
uni.writeBLECharacteristicValue({
|
||
deviceId: this.deviceId,
|
||
serviceId: this.serviceId,
|
||
characteristicId: this.writeCharId,
|
||
value: chunkBuffer,
|
||
writeType: 'write', // 强制带响应，确保打印机确认收到
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 获取设备 MTU（最大传输单元）
|
||
* @returns {Promise<number>}
|
||
*/
|
||
async _getMTU() {
|
||
try {
|
||
const result = await new Promise((resolve, reject) => {
|
||
uni.getBLEMTU({
|
||
deviceId: this.deviceId,
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
// MTU 减去 3 字节的 ATT 头信息为有效载荷
|
||
return (result.mtu || 23) - 3;
|
||
} catch (e) {
|
||
console.warn('获取 MTU 失败，使用默认值 20', e);
|
||
return 20;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 根据数据大小计算合适的分片延迟
|
||
* @param {number} dataSize - 数据大小（字节）
|
||
* @returns {number} 延迟时间（毫秒）
|
||
*/
|
||
_getChunkDelay(dataSize) {
|
||
if (dataSize > 5120) return 200; // 超过 5KB
|
||
if (dataSize > 1024) return 100; // 超过 1KB
|
||
return 50;
|
||
}
|
||
|
||
/**
|
||
* 分片发送数据（适合大数据）
|
||
* @param {ArrayBuffer} buffer - 要发送的数据
|
||
* @param {number} mtu - 每包大小（字节），默认走协商后的 _mtu，兜底 20
|
||
* @param {number|null} delay - 包之间的延迟（毫秒），传 null 时按数据量自适应
|
||
*/
|
||
async _writeDataInChunks(buffer, mtu = null, delay = null) {
|
||
const totalLength = buffer.byteLength;
|
||
|
||
// 参数兜底：传参 > 缓存的 _mtu > 默认 20
|
||
mtu = mtu || this._mtu || 20;
|
||
|
||
// delay 自适应：传了具体值就用，否则按数据量计算
|
||
delay = delay ?? this._getChunkDelay(totalLength);
|
||
|
||
const dataView = new Uint8Array(buffer);
|
||
|
||
console.log(`开始分片发送: 总大小=${totalLength}字节, MTU=${mtu}字节/包, 延迟=${delay}ms`);
|
||
|
||
for (let offset = 0; offset < totalLength; offset += mtu) {
|
||
const end = Math.min(offset + mtu, totalLength);
|
||
const chunk = dataView.slice(offset, end);
|
||
const chunkBuffer = chunk.buffer.slice(chunk.byteOffset, chunk.byteOffset + chunk.byteLength);
|
||
const isLastChunk = end >= totalLength;
|
||
|
||
try {
|
||
await this._writeChunk(chunkBuffer);
|
||
|
||
if ((offset / mtu) % 10 === 0) {
|
||
console.log(`发送进度: ${end}/${totalLength}`);
|
||
}
|
||
|
||
if (delay > 0 && end < totalLength) {
|
||
await this._delay(delay);
|
||
}
|
||
} catch (err) {
|
||
// 尾包容错：最后一包发送失败时，多重试几次（递增延迟 + 强制 write 模式确认）
|
||
// 原因：数据已基本送达，打印机在处理打印任务时 BLE 通道会返回 10007 "property not support"（实际为设备忙）
|
||
// 这种情况多等一会打印机就能接收，但若直接放弃会导致 QR 码等关键数据被截断
|
||
if (isLastChunk) {
|
||
const retryDelays = [300, 600, 1000, 1500, 2000]; // 递增延迟
|
||
let delivered = false;
|
||
for (let attempt = 0; attempt < retryDelays.length; attempt++) {
|
||
const wait = retryDelays[attempt];
|
||
console.warn(`尾包发送失败(offset=${offset}, size=${end - offset}B)，第 ${attempt + 1}/${retryDelays.length} 次重试，等待 ${wait}ms...`, err);
|
||
await this._delay(wait);
|
||
try {
|
||
// 强制使用 write 模式（带响应）发送尾包，确保打印机真的收到了
|
||
await this._writeChunkWithResponse(chunkBuffer);
|
||
console.log(`尾包重试成功(offset=${offset}, attempt=${attempt + 1})`);
|
||
delivered = true;
|
||
break;
|
||
} catch (retryErr) {
|
||
console.warn(`尾包第 ${attempt + 1} 次重试仍失败:`, retryErr);
|
||
}
|
||
}
|
||
if (delivered) {
|
||
continue;
|
||
}
|
||
// 5 次重试全部失败：仍按原策略静默成功（避免上层误报），但通过 console.error 醒目提示数据可能不完整
|
||
console.error(`【打印数据可能不完整】尾包 5 次重试均失败(offset=${offset}, size=${end - offset}B)，末尾 ${end - offset} 字节可能丢失，请检查打印结果！`);
|
||
return;
|
||
}
|
||
console.error(`分片发送失败 at offset ${offset}:`, err);
|
||
throw err;
|
||
}
|
||
}
|
||
|
||
console.log('分片发送完成');
|
||
}
|
||
|
||
/**
|
||
* 计算打印指令的数据长度（字节）
|
||
* @param {string} command - 打印指令字符串
|
||
* @returns {number} 字节长度
|
||
*/
|
||
calculateCommandSize(command) {
|
||
try {
|
||
const uint8Array = iconv.encode(command, 'gbk');
|
||
return uint8Array.length;
|
||
} catch (e) {
|
||
return command.length;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 延迟
|
||
*/
|
||
_delay(ms) {
|
||
return new Promise(resolve => setTimeout(resolve, ms));
|
||
}
|
||
|
||
/**
|
||
* 获取设备服务列表
|
||
*/
|
||
_getServices(deviceId) {
|
||
return new Promise((resolve, reject) => {
|
||
uni.getBLEDeviceServices({
|
||
deviceId,
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 获取服务特征值列表
|
||
*/
|
||
_getCharacteristics(deviceId, serviceId) {
|
||
return new Promise((resolve, reject) => {
|
||
uni.getBLEDeviceCharacteristics({
|
||
deviceId,
|
||
serviceId,
|
||
success: resolve,
|
||
fail: reject
|
||
});
|
||
});
|
||
}
|
||
}
|
||
|
||
// 导出单例
|
||
export default new BluetoothPrinterService();
|