微信小程序 蓝牙打印esc编码格式

esc.js

var encode = require("./encoding.js")
var app = getApp();
var jpPrinter = {　　　　
  createNew: function() {　　　　　　
    var jpPrinter = {};
    var data = [];

    var bar = ["UPC-A", "UPC-E", "EAN13", "EAN8", "CODE39", "ITF", "CODABAR", "CODE93", "CODE128"];

    jpPrinter.name = "蓝牙打印机";

    jpPrinter.init = function() { //初始化打印机
      data.push(27)
      data.push(64)
    };

    jpPrinter.setText = function(content) { //设置文本内容
      var code = new encode.TextEncoder(
        'gb18030', {
          NONSTANDARD_allowLegacyEncoding: true
        }).encode(content)
      for (var i = 0; i < code.length; ++i) {
        data.push(code[i])
      }
    }

    jpPrinter.setBarcodeWidth = function(width) { //设置条码宽度
      data.push(29)
      data.push(119)
      if (width > 6) {
        width = 6;
      }
      if (width < 2) {
        width = 1;
      }
      data.push(width)
    }

    jpPrinter.setBarcodeHeight = function(height) { //设置条码高度
      data.push(29)
      data.push(104)
      data.push(height)
    }

    jpPrinter.setBarcodeContent = function(t,content) {
      var code = new encode.TextEncoder(
        'gb18030', {
            NONSTANDARD_allowLegacyEncoding: true
        }).encode(content)
      var ty = 73;
      data.push(29)
      data.push(107)
      switch (t) {
        case bar[0]:
          ty = 65;
          break;
        case bar[1]:
          ty = 66;
          break;
        case bar[2]:
          ty = 67;
          break;
        case bar[3]:
          ty = 68;
          break;
        case bar[4]:
          ty = 69;
          break;
        case bar[5]:
          ty = 70;
          break;
        case bar[6]:
          ty = 71;
          break;
        case bar[7]:
          ty = 72;
          break;
        case bar[8]:
          ty = 73;
          break;
      }
      data.push(ty)
      for (var i = 0; i < code.length; ++i) {
        data.push(code[i])
      }
    }
    jpPrinter.setPrintBarCode = function() { //打印条码
        data.push(29)
        data.push(107)
        data.push(5)
        data.push(11)
        data.push(48)
        // data.push(3)
        // data.push(0)
        // data.push(49)
        // data.push(81)
        // data.push(48)
      }

    jpPrinter.setSelectSizeOfModuleForQRCode = function(n) { //设置二维码大小
      data.push(29)
      data.push(40)
      data.push(107)
      data.push(3)
      data.push(0)
      data.push(49)
      data.push(67)
      if (n > 15) {
        n = 15
      }
      if (n < 1) {
        n = 1
      }
      data.push(n)
    }

    jpPrinter.setSelectErrorCorrectionLevelForQRCode = function(n) { //设置纠错等级
      /*
      n      功能      纠错能力
      48 选择纠错等级 L 7
      49 选择纠错等级 M 15
      50 选择纠错等级 Q 25
      51 选择纠错等级 H 30
      */
      data.push(29)
      data.push(40)
      data.push(107)
      data.push(3)
      data.push(0)
      data.push(49)
      data.push(69)
      data.push(n)
    }

    jpPrinter.setStoreQRCodeData = function(content) { //设置二维码内容
      var code = new encode.TextEncoder(
        'gb18030', {
          NONSTANDARD_allowLegacyEncoding: true
        }).encode(content)
      data.push(29)
      data.push(40)
      data.push(107)
      data.push(parseInt((code.length + 3) % 256))
      data.push(parseInt((code.length + 3) / 256))
      data.push(49)
      data.push(80)
      data.push(48)

      for (var i = 0; i < code.length; ++i) {
        data.push(code[i])
      }
    }

    jpPrinter.setPrintQRCode = function() { //打印二维码
      data.push(29)
      data.push(40)
      data.push(107)
      data.push(3)
      data.push(0)
      data.push(49)
      data.push(81)
      data.push(48)
    }

    jpPrinter.setHorTab = function() { //移动打印位置到下一个水平定位点的位置
      data.push(9)
    }

    jpPrinter.setAbsolutePrintPosition = function(where) { //设置绝对打印位置
      data.push(27)
      data.push(36)
      data.push(parseInt(where % 256))
      data.push(parseInt(where / 256))
    }

    jpPrinter.setRelativePrintPositon = function(where) { //设置相对横向打印位置
      data.push(27)
      data.push(92)
      data.push(parseInt(where % 256))
      data.push(parseInt(where / 256))
    }

    jpPrinter.setSelectJustification = function(which) { //对齐方式
      /*
      0, 48 左对齐
      1, 49 中间对齐
      2, 50 右对齐
      */
      data.push(27)
      data.push(97)
      data.push(which)
    }

    jpPrinter.setLeftMargin = function(n) { //设置左边距
      data.push(29)
      data.push(76)
      data.push(parseInt(n % 256))
      data.push(parseInt(n / 256))
    }

    jpPrinter.setPrintingAreaWidth = function(width) { //设置打印区域宽度
      data.push(29)
      data.push(87)
      data.push(parseInt(width % 256))
      data.push(parseInt(width / 256))
    }

    jpPrinter.setSound = function(n, t) { //设置蜂鸣器
      data.push(27)
      data.push(66)
      if (n < 0) {
        n = 1;
      } else if (n > 9) {
        n = 9;
      }

      if (t < 0) {
        t = 1;
      } else if (t > 9) {
        t = 9;
      }
      data.push(n)
      data.push(t)
    }

    jpPrinter.setBitmap = function(res) { //参数，画布的参数
      console.log(res)
      var width = parseInt((res.width + 7) / 8 * 8 / 8)
      var height = res.height;
      var time = 1;
      var temp = res.data.length - width * 32;
      var point_list = []
      console.log(width + "--" + height)
      data.push(29)
      data.push(118)
      data.push(48)
      data.push(0)
      data.push((parseInt((res.width + 7) / 8) * 8) / 8)
      data.push(0)
      data.push(parseInt(res.height % 256))
      data.push(parseInt(res.height / 256))
      console.log(res.data.length)
      console.log("temp=" + temp)
      for (var i = 0; i < height; ++i) {
        for (var j = 0; j < width; ++j) {
          for (var k = 0; k < 32; k += 4) {
            var po = {}
            if (res.data[temp] == 0 && res.data[temp + 1] == 0 && res.data[temp + 2] == 0 && res.data[temp + 3] == 0) {
              po.point = 0;
            } else {
              po.point = 1;
            }
            point_list.push(po)
            temp += 4
          }
        }
        time++
        temp = res.data.length - width * 32 * time
      }
      for (var i = 0; i < point_list.length; i += 8) {
        var p = point_list[i].point * 128 + point_list[i + 1].point * 64 + point_list[i + 2].point * 32 + point_list[i + 3].point * 16 + point_list[i + 4].point * 8 + point_list[i + 5].point * 4 + point_list[i + 6].point * 2 + point_list[i + 7].point
        data.push(p)
      }
    }

    jpPrinter.setPrint = function() { //打印并换行
      data.push(10)
    }

    jpPrinter.setPrintAndFeed = function(feed) { //打印并走纸feed个单位
      data.push(27)
      data.push(74)
      data.push(feed)
    }

    jpPrinter.setPrintAndFeedRow = function(row) { //打印并走纸row行
      data.push(27)
      data.push(100)
      data.push(row)
    }

    jpPrinter.getData = function() { //获取打印数据
      return data;
    };

    　　
    return jpPrinter;　
  },

  Query: function() {
    var queryStatus = {};
    var buf;
    var dateView;
    queryStatus.getRealtimeStatusTransmission = function(n) { //查询打印机实时状态
      /*
      n = 1：传送打印机状态
      n = 2：传送脱机状态
      n = 3：传送错误状态
      n = 4：传送纸传感器状态
      */
      buf = new ArrayBuffer(3)
      dateView = new DataView(buf)
      dateView.setUint8(0, 16)
      dateView.setUint8(1, 4)
      dateView.setUint8(2, n)
      queryStatus.query(buf)
    }

    queryStatus.query = function(buf) {
      wx.writeBLECharacteristicValue({
        deviceId: app.BLEInformation.deviceId,
        serviceId: app.BLEInformation.writeServiceId,
        characteristicId: app.BLEInformation.writeCharaterId,
        value: buf,
        success: function(res) {

        },
        complete: function(res) {
          console.log(res)
          buf = null
          dateView = null;
        }
      })
    }
    return queryStatus;
  }

};

module.exports.jpPrinter = jpPrinter;

票据打印模板

receiptTest: function() { //票据测试
    var that = this;
    var canvasWidth = that.data.canvasWidth
    var canvasHeight = that.data.canvasHeight
    var command = esc.jpPrinter.createNew()
    command.init()
    command.setText("票据测试!");
    command.setPrint()
    command.setText("This is a receipt test!!!")
    command.setPrint()
    command.setText("二维码测试:")
    command.setPrint()
    command.setSelectSizeOfModuleForQRCode(5)
    command.setSelectErrorCorrectionLevelForQRCode(49)
    command.setStoreQRCodeData("佳博智汇网络")
    command.setPrintQRCode()
    command.setBarcodeWidth(30)
    command.setBarcodeHeight(20)
    command.setBarcodeContent(3,'1234567')
    command.setPrintBarCode()
    command.setBarCode(170, 180, "EAN8", 64, 1, 3, 3, "1234567")
    command.setPrint()
    command.setSelectJustification(0)
    command.setText("向左对齐")
    command.setPrint()
    wx.canvasGetImageData({
      canvasId: 'edit_area_canvas',
      x: 0,
      y: 0,
      width: canvasWidth,
      height: canvasHeight,
      success: function(res) {
        command.setBitmap(res)
      },
      complete: function(res) {
        console.log("finish")
        command.setPrint()
        that.setData({
          isReceiptSend: true
        })
        that.prepareSend(command.getData())
      }
    })

    // this.send(buff)
  }