pharmacy.admin/public/lib/esc.js

var gpESC = {
  createNew: function () {
    var jpPrinter = {};
    var data = [];

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

    jpPrinter.name = "账单模式";

    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
        let printData = encodeToGb2312(content)
        let code = gpTool.hexStringToByteArray(printData)
        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) {
		let printData = encodeToGb2312(content)
        let code = gpTool.hexStringToByteArray(printData)
        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)
        data.push(parseInt(code.length))
        for (var i = 0; i < code.length; ++i) {
            data.push(code[i])
        }
    }

    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
        let printData = encodeToGb2312(content)
        let code = gpTool.hexStringToByteArray(printData)
        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;
  }

};