code_app/modules/saneui/dialog_device_scan.h

#ifndef DIALOG_DEVICE_SCAN_H
#define DIALOG_DEVICE_SCAN_H

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

namespace Ui {
class Dialog_Device_Scan;
}

class Dialog_Device_Scan : public QDialog
{
    Q_OBJECT

public:
    Dialog_Device_Scan(const SANEAPI* saneApi, SANE_Handle dev, const char *devName,
                       show_scan_ui_event_callback eventCallback, void *eventParam,
                       show_scan_ui_image_callback imageCallback, void *imageParam, QWidget *parent = nullptr);
    ~Dialog_Device_Scan();

protected:
    void keyPressEvent(QKeyEvent *e) override;

signals:
    void eventFunc(int flag, QString errInfo);
    void imageCount(int count);

private slots:
    void on_eventFunc(int flag, QString errInfo);
    void on_pushButton_Cancel_clicked();
    void on_pushButton_Complete_clicked();
    void on_imageCount(int count);

private:
    void startScan();

protected:
    virtual void closeEvent(QCloseEvent *e) override;

private:
    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);

private:
    Ui::Dialog_Device_Scan *ui;
    SANEAPI m_saneAPI;
    SANE_Handle m_saneDev;
    show_scan_ui_event_callback m_eventCallback;
    void *m_eventParam;
    show_scan_ui_image_callback m_imageCallback;
    void *m_imageParam;
    HGByte* m_buffer;
    HGInt m_bufferSize;
    volatile HGBool m_stopThread;
    HGThread m_thread;

    QTimer *m_timer;
};

#endif // DIALOG_DEVICE_SCAN_H