// maybe finish bytes later on
/// <summary>
///
/// </summary>
/// <param name="peripheral"></param>
/// <param name="serviceUuid"></param>
/// <param name="rxCharacteristicUuid"></param>
/// <param name="txCharacteristicUuid"></param>
/// <param name="txNextBytes"></param>
/// <returns></returns>
//public static IObservable<Unit> RxFlow(this IPeripheral peripheral,
// Guid serviceUuid,
// Guid rxCharacteristicUuid,
// Guid txCharacteristicUuid,
// byte[] txNextBytes,
// Stream writeStream) => Observable.Create<Unit>(ob =>
//{
// var disp = new CompositeDisposable();
// IDisposable flowLoop = null;
// IGattCharacteristic tx = null;
// IGattCharacteristic rx = null;
// disp.Add(peripheral
// .WhenDisconnected()
// .Subscribe(x =>
// {
// tx = null;
// rx = null;
// flowLoop?.Dispose();
// })
// );
// disp.Add(peripheral
// .WhenKnownCharacteristicsDiscovered(serviceUuid, txCharacteristicUuid, rxCharacteristicUuid)
// .Subscribe(x =>
// {
// if (x.Uuid.Equals(txCharacteristicUuid))
// tx = x;
// else if (x.Uuid.Equals(rxCharacteristicUuid))
// rx = x;
// // while connected & not stopped
// if (tx != null && rx != null)
// {
// if (rx.CanNotifyOrIndicate())
// {
// flowLoop = rx
// .WhenNotificationReceived()
// .Subscribe(
// y =>
// {
// writeStream.Write(y.Data, 0, y.Data.Length);
// // don't need to await this will progress stream
// tx.Write(txNextBytes).Subscribe();
// //ob.OnNext(Unit.Default);
// },
// ob.OnError
// );
// }
// else
// {
// // TODO: need state hooks so this keeps going like notification pattern
// flowLoop = Observable
// .While(
// () => peripheral.IsConnected() && !disp.IsDisposed,
// Observable.FromAsync(async ct =>
// {
// await tx.Write(txNextBytes).ToTask(ct);
// var result = await rx.Read().ToTask(ct);
// writeStream.Write(result.Data, 0, result.Data.Length);
// })
// )
// .Subscribe(_ => { }, ob.OnError);
// }
// }
// })
// );
// return () =>
// {
// disp.Dispose();
// flowLoop?.Dispose();
// };
//});
//public static IObservable<Unit> TxFlow()
/// <summary>
/// Used for writing blobs
/// </summary>
/// <param name="ch">The characteristic to write on</param>
/// <param name="value">The bytes to send</param>
/// <param name="reliableWrite">Use reliable write atomic writing if available (windows and android)</param>
public static IObservable <BleWriteSegment> BlobWrite(this IGattCharacteristic ch, byte[] value, bool reliableWrite)
// don't need to dispose of memorystream
=> ch.BlobWrite(new MemoryStream(value), reliableWrite);
void PrintText()
{
//设置标签纸尺寸，间隙尺寸，并且清空打印缓冲区
string printstr = String.Format("SIZE {0} mm, {1} mm \r\n", 74, 56);
printstr += String.Format("GAP {0} mm \r\n", 2);
printstr += String.Format("CLS \r\n");
//第一行数据 名称及单据编号
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 24, "TSS32.BF2", 0, 1, 1, "胜京物流收货凭证");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 324, 24, "4", 0, 1, 1, "8542214");
//画一条细线
printstr += String.Format("BAR {0},{1},{2},{3} \r\n", 2, 66, 580, 1);
//代收款及应收款
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 76, "TSS24.BF2", 0, 1, 1, "代收款：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 92, 76, "3", 0, 1, 1, "11.00");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 76, "TSS24.BF2", 0, 1, 1, "应收款：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 284, 76, "3", 0, 1, 1, "11.00");
//日期及货品
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 106, "TSS24.BF2", 0, 1, 1, "日期：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 76, 110, "2", 0, 1, 1, "2020-11-12 12:00");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 380, 106, "TSS24.BF2", 0, 1, 1, "货品：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 448, 106, "TSS24.BF2", 0, 1, 1, "服装");
//发站、到站、件数
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 136, "TSS24.BF2", 0, 1, 1, "发站：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 76, 136, "TSS24.BF2", 0, 1, 1, "保定");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 136, "TSS24.BF2", 0, 1, 1, "到站：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 248, 136, "TSS24.BF2", 0, 1, 1, "北京");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 380, 136, "TSS24.BF2", 0, 1, 1, "件数：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 448, 136, "3", 0, 1, 1, "1");
//收货人、收货电话
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 166, "TSS24.BF2", 0, 1, 1, "收货人：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 94, 166, "TSS24.BF2", 0, 1, 1, "测试");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 166, "TSS24.BF2", 0, 1, 1, "收货电话：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 288, 166, "3", 0, 1, 1, "15010201672");
//托运人、托运电话
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 196, "TSS24.BF2", 0, 1, 1, "托运人：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 94, 196, "TSS24.BF2", 0, 1, 1, "测试");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 196, "TSS24.BF2", 0, 1, 1, "托运电话：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 288, 196, "3", 0, 1, 1, "15010201672");
//付款方式、总运费、备注
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 226, "TSS24.BF2", 0, 1, 1, "付款方式：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 110, 226, "TSS24.BF2", 0, 1, 1, "提付");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 226, "TSS24.BF2", 0, 1, 1, "总运费：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 268, 226, "3", 0, 1, 1, "11.00");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 380, 226, "TSS24.BF2", 0, 1, 1, "备注：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 446, 226, "3", 0, 1, 1, "15010201672");
//分割线
printstr += String.Format("BAR {0},{1},{2},{3} \r\n", 0, 260, 580, 1);
//经办人、发货人签字
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 270, "TSS24.BF2", 0, 1, 1, "经办人：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 94, 270, "TSS24.BF2", 0, 1, 1, "测试");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 270, "TSS24.BF2", 0, 1, 1, "发货人签字：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 312, 270, "TSS24.BF2", 0, 1, 1, "测试");
//发站电话
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 300, "TSS24.BF2", 0, 1, 1, "发站电话：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 110, 300, "3", 0, 1, 1, "15010201672");
//发站电话
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 330, "TSS24.BF2", 0, 1, 1, "到站电话：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 110, 330, "3", 0, 1, 1, "15010201672");
//发货存根
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 360, "TSS24.BF2", 0, 1, 1, "发货存根：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 110, 360, "TSS24.BF2", 0, 1, 1, "保丢不保损！");
//持卡人、卡号
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 390, "TSS24.BF2", 0, 1, 1, "持卡人：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 92, 390, "TSS24.BF2", 0, 1, 1, "测试");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 180, 390, "TSS24.BF2", 0, 1, 1, "卡号：");
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 252, 393, "3", 0, 1, 1, "1234567890");
//提示信息
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 6, 420, "TSS24.BF2", 0, 1, 1, "货物查询时间为3日内，过期概不负责！");
//LOGO字符打印
printstr += String.Format("TEXT {0},{1},\"{2}\",{3},{4},{5},\"{6}\" \r\n", 300, 300, "TSS24.BF2", 0, 3, 3, "胜");
//打印二维码
//printstr += String.Format("QRCODE {0},{1},\"{2}\",{3},\"{4}\",{5},\"{6}\" \r\n",400,390,"H",10,"A",0,"www.azure.cn");
printstr += String.Format("QRCODE {0},{1},{2},{3},{4},{5},\"{6}\" \r\n", 440, 280, "H", 4, "A", 0, "https://www.azure.cn");
//打印标签
printstr += String.Format("PRINT {0} \r\n", 1);
//打印机指令包含中卫应为GB2312，装换之
byte[] printbytes = Encoding.GetEncoding("UTF-8").GetBytes(printstr);
printbytes = Encoding.Convert(Encoding.GetEncoding("UTF-8"), Encoding.GetEncoding("GB2312"), printbytes);
MemoryStream stream = new MemoryStream(printbytes);
//打印后续操作
//Write(bs) 小文本打印方式
_savedCharacteristic?.BlobWrite(stream).Subscribe(
result => {
Debug.WriteLine(result.Position);
},
exception => {
ShowMessage("错误", "无法完成打印");
}
);
ShowMessage("信息", "打印完毕");
}