zhipuzi_pos_windows/lewaimai_dispatch/tool/CPosPrinter.cpp

#include "../pch/pch.h"
#include "CPosPrinter.h"

#include <winioctl.h>
#include <setupapi.h>

CPosPrinter::CPosPrinter()
{
    Init();
}


CPosPrinter::~CPosPrinter()
{
}

bool CPosPrinter::Init()
{
    //遍历USB设备，找到POS打印机路径
    //设备路径
    TCHAR * szDevicePath[MAX_DEVICE];
    //设置中文字符
    setlocale(LC_CTYPE, "chs");
    TCHAR* Port = NULL;

    //分配需要的空间
    for(int i = 0; i < MAX_DEVICE; i++)
    {
        szDevicePath[i] = new TCHAR[256];
    }

    //取设备路径
    int nDevice = GetDevicePath((LPGUID)&USB_GUID, szDevicePath);
    int i = 0;

    while(i < nDevice)
    {
        Port = szDevicePath[i++];
        LOG_INFO("device.Port = " << Port);
    }

    m_hPort = CreateFile(Port, GENERIC_READ | GENERIC_WRITE,
                         0, NULL,
                         OPEN_EXISTING,
                         FILE_ATTRIBUTE_NORMAL, NULL);

    if(m_hPort == INVALID_HANDLE_VALUE)
    {
        // 打开端口失败
        return false;
    }

    return true;
}

void CPosPrinter::PrintWaimaiOrder(CWaimaiOrder& order)
{
    POS_Reset();
    POS_SetMotionUnit(180, 180);

	string shop_name = "#" + order.m_restaurant_number + "   " + CLewaimaiString::UTF8ToANSI(order.m_shop_name);
    POS_S_TextOut(shop_name);
    POS_FeedLine();

	POS_FeedLine();
	POS_FeedLine();
   
    POS_CutPaper();
}

////////////////////////////////////////////////////////////////////////////////////////////////////////
//获取CreateFile的USB端口号
////////////////////////////////////////////////////////////////////////////////////////////////////////

// 根据GUID获得设备路径
// lpGuid: GUID指针
// pszDevicePath: 设备路径指针的指针，用于返回找到的路径
// 返回: 成功得到的设备路径个数，可能不止1个
int CPosPrinter::GetDevicePath(LPGUID lpGuid, LPTSTR* pszDevicePath)
{
    HDEVINFO hDevInfoSet;
    SP_DEVINFO_DATA spDevInfoData;
    SP_DEVICE_INTERFACE_DATA ifData;
    PSP_DEVICE_INTERFACE_DETAIL_DATA pDetail;
    int nCount;
    int nTotle;
    BOOL bResult;
    wstring strUSBPrint = TEXT("USB 打印支持");
    // 取得一个该GUID相关的设备信息集句柄
    hDevInfoSet = ::SetupDiGetClassDevs(lpGuid,     // class GUID
                                        NULL,                    // 无关键字
                                        NULL,                    // 不指定父窗口句柄
                                        DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);    // 目前存在的设备

    // 失败...
    if(hDevInfoSet == INVALID_HANDLE_VALUE)
    {
        printf("failed \r\n");
        return 0;
    }

    // 申请设备接口数据空间
    pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)::GlobalAlloc(LMEM_ZEROINIT, INTERFACE_DETAIL_SIZE);
    pDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
    nTotle = -1;
    nCount = 0;
    bResult = TRUE;

    // 设备序号=0,1,2... 逐一测试设备接口，到失败为止
    while(bResult)
    {
        nTotle++;
        spDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
        // 枚举符合该GUID的设备接口
        bResult = ::SetupDiEnumDeviceInfo(
                      hDevInfoSet,     // 设备信息集句柄
                      (ULONG)nTotle,   // 设备信息集里的设备序号
                      &spDevInfoData);        // 设备接口信息

        if(bResult)
        {
            DWORD DataT;
            TCHAR buf[MAX_PATH];
            DWORD nSize = 0;

            // get Friendly Name or Device Description
            if(SetupDiGetDeviceRegistryProperty(hDevInfoSet, &spDevInfoData,
                                                SPDRP_FRIENDLYNAME, &DataT, (PBYTE)buf, sizeof(buf), &nSize))
            {
            }
            else if(SetupDiGetDeviceRegistryProperty(hDevInfoSet, &spDevInfoData,
                    SPDRP_DEVICEDESC, &DataT, (PBYTE)buf, sizeof(buf), &nSize))
            {
            }
            else
            {
                lstrcpy(buf, _T("Unknown"));
            }

            _tprintf(_T("buf = %s \r\n"), buf);

            //是否是要找的设备类型
            if(_tcscmp(buf, strUSBPrint.c_str()) != 0)
            {
                continue;
            }

            _tprintf(_T("OK\r\n"));
            ifData.cbSize = sizeof(ifData);
            // 枚舉符合該GUID的設備接口
            bResult = ::SetupDiEnumDeviceInterfaces(
                          hDevInfoSet,     // 設備信息集句柄
                          NULL,            // 不需額外的設備描述
                          lpGuid,          // GUID
                          (ULONG)nTotle,   // 設備信息集里的設備序號
                          &ifData);        // 設備接口信息

            if(bResult)
            {
                // 取得该设备接口的细节(设备路径)
                bResult = SetupDiGetInterfaceDeviceDetail(
                              hDevInfoSet,    // 设备信息集句柄
                              &ifData,        // 设备接口信息
                              pDetail,        // 设备接口细节(设备路径)
                              INTERFACE_DETAIL_SIZE,    // 输出缓冲区大小
                              NULL,           // 不需计算输出缓冲区大小(直接用设定值)
                              NULL);          // 不需额外的设备描述

                if(bResult)
                {
                    // 复制设备路径到输出缓冲区
                    ::_tcscpy_s(pszDevicePath[nCount], 256, pDetail->DevicePath);
                    // 调整计数值
                    nCount++;
                    _tprintf(_T("Cnt = %d,pDetail->DevicePath =%s\r\n"), nCount, pDetail->DevicePath);
                }
            }
        }
    }

    // 释放设备接口数据空间
    ::GlobalFree(pDetail);
    // 关闭设备信息集句柄
    ::SetupDiDestroyDeviceInfoList(hDevInfoSet);
    return nCount;
}

int CPosPrinter::WriteData(string meg)
{
    DWORD dwWrite;
    return WriteFile(m_hPort, meg.c_str(), (DWORD)meg.length(), &dwWrite, NULL);
}

int CPosPrinter::WriteBuf(char *buf, int len)
{
    DWORD dwWrite;
    return WriteFile(m_hPort, buf, len, &dwWrite, NULL);
}

int CPosPrinter::POS_Reset(void)
{
    string s;
    s = "\x1B\x40";
    WriteData(s);
    return 0;
}

int CPosPrinter::POS_FeedLine(void)
{
    string s;
    s = "\x0A";
    WriteData(s);
    return 0;
}

int CPosPrinter::POS_SetMotionUnit(int x, int y)
{
    string s;
    s = "\x1D\x50\xB4\xB4";
    WriteData(s);
    s = "\x1B\x53";
    WriteData(s);
    return 0;
}

int CPosPrinter::POS_S_TextOut(string &abc)
{
    string s;
    char SetAbsPos[4] = { 0x1B, 0x24, 0x46, 0x00 };
    WriteBuf(SetAbsPos, 4);
    char SelctFontType[3] = { 0x1B, 0x4D, 0x03 };
    WriteBuf(SelctFontType, 3);
    char SelctOutMode[3] = { 0x1D, 0x21, 0x00 };
    WriteBuf(SelctOutMode, 3);
    WriteData(abc);
    return 0;
}

int CPosPrinter::POS_CutPaper()
{
    char CutPaperMode[4] = { 0x1D, 0x56, 0x41, 0x00 };
    WriteBuf(CutPaperMode, 4);
    return 0;
}

int CPosPrinter::POS_OutQRCode()
{
    char  QRCode1[8] = { 0x1d, 0x28, 0x6b, 0x03, 0x00, 0x31, 0x43, 0x05 };
    char  QRCode2[16] = { 0x1d, 0x28, 0x6b, 0x0b, 0x00, 0x31, 0x50, 0x30, 0x47, 0x70, 0x72, 0x69,
                          0x6e, 0x74, 0x65, 0x72
                        };
    char  QRCode3[8] = { 0x1d, 0x28, 0x6b, 0x03, 0x00, 0x31, 0x51, 0x30 };
    WriteBuf(QRCode1, 8);
    WriteBuf(QRCode2, 16);
    WriteBuf(QRCode3, 8);
    return 0;
}