code_app/app/scanner2/device_user.cpp

#include "device_user.h"
#include <QMessageBox>
#include <QFileDialog>
#include "HGUIGlobal.h"
#include <thread>

#if defined(HG_CMP_MSC)

DeviceUserMgr::DeviceUserMgr(const QString &password, QWidget *wnd)
{
    m_password = password;
    m_wnd = wnd;
    m_twainDSM = nullptr;
    HGTwain_CreateDSM((HWND)m_wnd->winId(), &m_twainDSM);
}

DeviceUserMgr::~DeviceUserMgr()
{
    HGTwain_DestroyDSM(m_twainDSM);
    m_twainDSM = nullptr;
}

class DeviceUser* DeviceUserMgr::OpenDeviceUser()
{
    HGTwainDS ds = nullptr;
    HGResult ret = HGTwain_CreateSelectedDSEx(m_twainDSM, &ds);
    if (nullptr == ds)
    {
        if (HGTWAIN_ERR_CANCELUI != ret)
        {
            QMessageBox::information(m_wnd, tr("Prompt"), tr("Device source not found!"));
        }

        return nullptr;
    }

    return new DeviceUser(m_wnd, ds, m_password);
}

DeviceUser *DeviceUserMgr::OpenDefaultDeviceUser()
{
    HGTwainDS ds = nullptr;
    HGTwain_CreateDefaultDS(m_twainDSM, &ds);
    if (nullptr == ds)
    {
        QMessageBox::information(m_wnd, tr("Prompt"), tr("Device source not found!"));
        return nullptr;
    }
        
    return new DeviceUser(m_wnd, ds, m_password);
}

DeviceUser::DeviceUser(QWidget *wnd, HGTwainDS ds, const QString &password)
{
    m_wnd = wnd;
    m_twainDS = ds;
    m_password = password;
}

DeviceUser::~DeviceUser()
{
    HGTwain_CloseDS(m_twainDS);
    HGTwain_DestroyDS(m_twainDS);
    m_twainDS = nullptr;
}

HGResult DeviceUser::Open()
{
    return HGTwain_OpenDS(m_twainDS);
}

HGResult DeviceUser::OpenDefault()
{
    return HGTwain_OpenDS(m_twainDS);
}

HGResult DeviceUser::Close()
{
    return HGTwain_CloseDS(m_twainDS);
}

QString DeviceUser::GetName()
{
    HGChar devName[256] = {0};
    HGTwain_GetDSDeviceName(m_twainDS, devName, 256);
    return QString(devName);
}

HGResult DeviceUser::ShowSettingDlg()
{
    return HGTwain_EnableDSUIOnly(m_twainDS, (HWND)m_wnd->winId(), DSEventFunc, this);
}

HGResult DeviceUser::StartScan()
{
    return HGTwain_EnableDS(m_twainDS, HGFALSE, (HWND)m_wnd->winId(), DSEventFunc, this, DSImageFunc, this);
}

HGResult DeviceUser::StartSingleScan()
{
    return HGTwain_EnableDSWithSingleScan(m_twainDS, (HWND)m_wnd->winId(), DSEventFunc, this, DSImageFunc, this);
}

HGResult DeviceUser::GetDeviceCustomInfo(HGTwainDeviceCustomInfo *info)
{
    return HGTwain_GetDSDeviceCustomInfo(m_twainDS, info);
}

HGResult DeviceUser::Login()
{
    return HGTwain_LoginDS(m_twainDS, "user", getStdString(m_password).c_str());
}

HGResult DeviceUser::Logout()
{
    return HGTwain_LogoutDS(m_twainDS);
}

HGResult DeviceUser::ClearRollerCount()
{
    return HGTwain_ClearDSRollerCount(m_twainDS);
}

QString DeviceUser::GetDriverLog()
{
    QString fileName = QFileDialog::getSaveFileName(m_wnd, tr("Select log file path"), ".", tr("text(*.txt)"));
    std::string f = getStdFileName(fileName).toLocal8Bit().data();
    HGResult ret = HGTwain_GetDSDriverLog(m_twainDS, f.c_str());
    if (ret == HGBASE_ERR_OK)
        return fileName;

    return "Fail";
}

HGResult DeviceUser::ClearDriverLog()
{
    return HGTwain_ClearDSDriverLog(m_twainDS);
}

QString DeviceUser::GetDeviceLog()
{
    QString fileName = QFileDialog::getSaveFileName(m_wnd, tr("Select log file path"), ".", tr("text(*.txt)"));
    std::string f = getStdFileName(fileName).toLocal8Bit().data();
    HGResult ret = HGTwain_GetDSDeviceLog(m_twainDS, f.c_str());
    if (ret == HGBASE_ERR_OK)
        return fileName;

    return "Fail";
}

HGResult DeviceUser::ClearDeviceLog()
{
    return HGTwain_ClearDSDeviceLog(m_twainDS);
}

void HGAPI DeviceUser::DSEventFunc(HGTwainDS ds, HGUInt event, HGPointer param)
{
    DeviceUser* p = (DeviceUser*)param;
    if (HGTWAIN_EVENT_TYPE_SCANFINISHED == event)
    {
        HGTwain_DisableDS(p->m_twainDS);
        emit p->scanFinishEvent();
    }
    else if (HGTWAIN_EVENT_TYPE_WORKING == event)
    {
        emit p->scanWorkingEvent();
    }
}

HGUInt HGAPI DeviceUser::DSImageFunc(HGTwainDS ds, HGImage image, HGUInt type, HGPointer param)
{
    DeviceUser* p = (DeviceUser*)param;
    emit p->newImage(image);
    return HGBASE_ERR_OK;
}

#else

DeviceUserMgr::DeviceUserMgr(const QString &password, QWidget *wnd)
{
    m_wnd = wnd;
    m_password = password;
    m_saneMgr = nullptr;
    HGSane_CreateManager(&m_saneMgr);
}

DeviceUserMgr::~DeviceUserMgr()
{
    HGSane_DestroyManager(m_saneMgr);
    m_saneMgr = nullptr;
}

class DeviceUser* DeviceUserMgr::OpenDeviceUser()
{
    HGSaneSource source = nullptr;
    HGSane_OpenSource(m_saneMgr, 0, &source);
    if (nullptr == source)
        return nullptr;

    return new DeviceUser(m_wnd, source, m_password);
}

DeviceUser *DeviceUserMgr::OpenDefaultDeviceUser()
{
    HGSaneSource source = nullptr;
    HGSane_OpenDefaultSource(m_saneMgr, &source);
    if (nullptr == source)
        return nullptr;

    return new DeviceUser(m_wnd, source, m_password);
}

DeviceUser::DeviceUser(QWidget *wnd, HGSaneSource source, const QString &password)
{
    m_wnd = wnd;
    m_source = source;
    m_saneDev = nullptr;
    m_password = password;
}

DeviceUser::~DeviceUser()
{
    HGSane_CloseDevice(m_saneDev);
    m_saneDev = nullptr;
    HGSane_CloseSource(m_source);
    m_source = nullptr;
}

HGResult DeviceUser::Open()
{
    if (nullptr != m_saneDev)
    {
        return HGSANE_ERR_FAIL;
    }

    HGUInt count = 0;
    HGSane_GetDeviceCount(m_source, &count);
    if (0 == count)
    {
        QMessageBox::information(m_wnd, tr("Prompt"), tr("Scanner not found!"));
        return HGSANE_ERR_FAIL;
    }
    else
    {
        return HGSane_OpenSelectedDevice(m_source, m_wnd, &m_saneDev);
    }    
}

HGResult DeviceUser::OpenDefault()
{
    if (nullptr != m_saneDev)
    {
        return HGSANE_ERR_FAIL;
    }

    HGUInt count = 0;
    HGSane_GetDeviceCount(m_source, &count);
    if (0 == count)
    {
        QMessageBox::information(m_wnd, tr("Prompt"), tr("Scanner not found!"));
        return HGSANE_ERR_FAIL;
    }
    else
    {
        HGChar errInfo[256];
        return HGSane_OpenDevice(m_source, 0, &m_saneDev, errInfo, 256);
    }
}

HGResult DeviceUser::Close()
{
    if (nullptr == m_saneDev)
    {
        return HGSANE_ERR_FAIL;
    }

    HGSane_CloseDevice(m_saneDev);
    m_saneDev = nullptr;
    return HGBASE_ERR_OK;
}

QString DeviceUser::GetName()
{
    HGChar devName[256];
    HGSane_GetDeviceName(m_saneDev, devName, 256);
    return QString(devName);
}

HGResult DeviceUser::ShowSettingDlg()
{
    return HGSane_ShowDeviceSettingDlg(m_saneDev, m_wnd);
}

HGResult DeviceUser::StartScan()
{
    return HGSane_StartDevice(m_saneDev, m_wnd, DeviceEventFunc, this, DeviceImageFunc, this);
}

HGResult DeviceUser::StartSingleScan()
{
    return HGSane_StartDeviceWithSingleScan(m_saneDev, m_wnd, DeviceEventFunc, this, DeviceImageFunc, this);
}

HGResult DeviceUser::GetDeviceCustomInfo(HGSaneDeviceCustomInfo *info)
{
    return HGSane_GetDeviceCustomInfo(m_saneDev, info);
}

HGResult DeviceUser::Login()
{
    return HGSane_Login(m_saneDev, "user", getStdString(m_password).c_str());
}

HGResult DeviceUser::Logout()
{
    return HGSane_Logout(m_saneDev);
}

HGResult DeviceUser::ClearRollerCount()
{
    return HGSane_ClearRollerCount(m_saneDev);
}

int DeviceUser::GetDeviceRollerLife()
{
    int rollerLife = 0;
    HGSane_GetDeviceRollerLife(m_saneDev, &rollerLife);
    return rollerLife;
}

QString DeviceUser::GetDriverLog()
{
    QString fileName = QFileDialog::getSaveFileName(m_wnd, tr("Select log file path"), ".", tr("text(*.txt)"));
    std::string f = getStdFileName(fileName).toLocal8Bit().data();
    HGResult ret = HGSane_GetDriverLog(m_saneDev, f.c_str());
    if (ret == HGBASE_ERR_OK)
        return fileName;

    return "Fail";
}

HGResult DeviceUser::ClearDriverLog()
{
    return HGSane_ClearDriverLog(m_saneDev);
}

QString DeviceUser::GetDeviceLog()
{
    QString fileName = QFileDialog::getSaveFileName(m_wnd, tr("Select log file path"), ".", tr("text(*.txt)"));
    std::string f = getStdFileName(fileName).toLocal8Bit().data();
    HGResult ret = HGSane_GetDeviceLog(m_saneDev, f.c_str());
    if (ret == HGBASE_ERR_OK)
        return fileName;

    return "Fail";
}

HGResult DeviceUser::ClearDeviceLog()
{
    return HGSane_ClearDeviceLog(m_saneDev);
}

void HGAPI DeviceUser::DeviceEventFunc(HGSaneDevice dev, HGUInt event, HGPointer param)
{
    DeviceUser* p = (DeviceUser*)param;
    if (HGSANE_EVENT_TYPE_SCANFINISHED == event)
    {
        emit p->scanFinishEvent();
    }
    else if (HGSANE_EVENT_TYPE_WORKING == event)
    {
        emit p->scanWorkingEvent();
    }
}

HGUInt HGAPI DeviceUser::DeviceImageFunc(HGSaneDevice dev, HGImage image, HGUInt type, HGPointer param)
{
    DeviceUser* p = (DeviceUser*)param;
    if (type != HGSANE_IMAGE_TYPE_DOUBLE)
    {
        emit p->newImage(image);
        return HGBASE_ERR_OK;
    }

    HGUInt imgRet = HGBASE_ERR_OK;
    emit p->abnormalImage(image, &imgRet);
    if (HGSANE_ERR_IMAGE_RESERVE == imgRet)
    {
        emit p->newImage(image);
    }

    return imgRet;
}

#endif