File indexing completed on 2024-04-28 04:32:19

 /*
  * SPDX-FileCopyrightText: 2002-2003 Stephan Stapel <stephan dot stapel at web dot de>
  * SPDX-FileCopyrightText: 2008-2009 Gilles Caulier <caulier dot gilles at gmail dot com>
  * SPDX-FileCopyrightText: 2009, 2017 Kare Sars <kare dot sars at iki dot fi>
  *
  * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
  */
 
 #ifndef TWAINIFACE_H
 #define TWAINIFACE_H
 
 #include "twain.h"
 
 // Windows includes
 #include <windows.h>
 
 #include <QWidget>
 
 namespace KSaneIface
 {
 /**
  * Twain interface
  */
 class KSaneWidgetPrivate : public QWidget
 {
     Q_OBJECT
 
 public:
 
     KSaneWidgetPrivate();
     ~KSaneWidgetPrivate();
 
     /**
      * Hook-in. See class documentation for details!
      * @result    One should return false to get the message being
      *            processed by the application (should return false by default!)
      */
     bool nativeEvent(const QByteArray &eventType, void *message, long *result) override;
 
     void CloseDSM();
     QString SelectSource();
     bool OpenSource(const QString &device);
 
 public Q_SLOTS:
     bool OpenDialog();
     bool ReOpenDialog();
 
 Q_SIGNALS:
     void ImageReady(QByteArray &data, int width, int height, int bytes_per_line, int format);
     void qImageReady(const QImage &image);
 
 private:
 
     bool InitTwain();
     void ReleaseTwain();
 
     bool ProcessMessage(MSG msg);
 
     bool SetImageCount(TW_INT16 nCount = 1);
     bool DSIsOpen() const;
 
     bool CallTwainProc(pTW_IDENTITY pOrigin, pTW_IDENTITY pDest,
                        TW_UINT32 DG, TW_UINT16 DAT, TW_UINT16 MSG,
                        TW_MEMREF pData);
 
     bool EnableSource(bool showUI);
     void CloseDS();
 
     bool GetCapability(TW_CAPABILITY &twCap, TW_UINT16 cap, TW_UINT16 conType = TWON_DONTCARE16);
     bool GetCapability(TW_UINT16 cap, TW_UINT32 &value);
     bool SetCapability(TW_UINT16 cap, TW_UINT16 value, bool sign = false);
     bool SetCapability(TW_CAPABILITY &twCap);
 
     bool GetImageInfo(TW_IMAGEINFO &info);
 
     void TranslateMessage(TW_EVENT &twEvent);
     void TransferImage();
     bool EndTransfer();
     void CancelTransfer();
     bool GetImage(TW_IMAGEINFO &info);
 
     void ImageData(TW_MEMREF pdata, TW_IMAGEINFO &info);
 
 protected:
 
     bool         m_bDSMOpen;
     bool         m_bDSOpen;
     bool         m_bSourceEnabled;
     bool         m_bModalUI;
 
     int          m_nImageCount;
 
     HINSTANCE    m_hTwainDLL;
     DSMENTRYPROC m_pDSMProc;
 
     TW_IDENTITY  m_AppId;
     TW_IDENTITY  m_Source;
     TW_STATUS    m_Status;
     TW_INT16     m_returnCode;
     HWND         m_hMessageWnd;
 };
 
 }
 
 #endif /* TWAINIFACE_H */