code_app/app/scanner/device_user.h

#ifndef __DEVICE_USER_H__
#define __DEVICE_USER_H__

#include "base/HGDef.h"
#include <QDialog>

#if defined(HG_CMP_MSC)
#include "twain_user/HGTwain.h"

class DeviceUserMgr : public QObject
{
    Q_OBJECT

public:
    DeviceUserMgr(QWidget *wnd);
    ~DeviceUserMgr();

    // 弹出设备选择对话框，选择twain源
    class DeviceUser* OpenDeviceUser();

private:
    QWidget *m_wnd;
    HGTwainDSM m_twainDSM;
};

class DeviceUser : public QObject
{
    Q_OBJECT

    friend class DeviceUserMgr;
    DeviceUser(QWidget *wnd, HGTwainDS ds);
public:
    ~DeviceUser();

    // 获取设备名字
    QString GetName();
    // 弹出配置对话框
    HGResult ShowSettingDlg();
    // 弹出扫描对话框
    HGResult StartScan();
    HGResult StopScan();
    HGResult GetDeviceCustomInfo(HGTwainDeviceCustomInfo *info);

private:
    static void HGAPI DSCloseReqFunc(HGTwainDS ds, HGPointer param);
    static void HGAPI DSImageFunc(HGTwainDS ds, HGImage image, HGPointer param);

signals:
    void newImage(void *image);
    void finishScan();

private:
    QWidget *m_wnd;
    HGTwainDS m_twainDS;
};

#else
#include "sane_user/HGSane.h"

class DeviceUserMgr : public QObject
{
    Q_OBJECT

public:
    DeviceUserMgr(QWidget *wnd);
    ~DeviceUserMgr();

    // 弹出设备选择对话框，选择设备
    class DeviceUser* OpenDeviceUser();

private:
    QWidget *m_wnd;
    HGSaneManager m_saneMgr;
};

class DeviceUser : public QObject
{
    Q_OBJECT

    friend class DeviceUserMgr;
    DeviceUser(QWidget *wnd, HGSaneSource source, HGSaneDevice dev);
public:
    ~DeviceUser();

    // 获取设备名字
    QString GetName();
    // 弹出配置对话框
    HGResult ShowSettingDlg();
    // 弹出扫描对话框
    HGResult StartScan();
    HGResult StopScan();
    HGResult GetDeviceCustomInfo(HGSaneCustomInfo *info);

private:
    static void HGAPI DeviceImageFunc(HGSaneDevice dev, HGImage image, HGPointer param);

signals:
    void newImage(void *image);
    void finishScan();

private:
    QWidget *m_wnd;
    HGSaneSource m_source;
    HGSaneDevice m_saneDev;
};

#endif

#endif /* __DEVICE_USER_H__ */