604 lines
16 KiB
C++
604 lines
16 KiB
C++
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// DataCallback.cpp: implementation of the CDataCallback class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "WIATest.h"
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#include "DataCallback.h"
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#define IT_MSG_DATA_HEADER 0x0001
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#define IT_MSG_DATA 0x0002
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#define IT_MSG_STATUS 0x0003
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#define IT_MSG_TERMINATION 0x0004
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// #define _DEBUGCALLBACK
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[]=__FILE__;
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#define new DEBUG_NEW
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#endif
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/**************************************************************************\
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* CWiaDataCallback::QueryInterface()
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*
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* QI for IWiadataCallback Interface
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*
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*
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* Arguments:
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*
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* iid - Interface ID
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* ppv - Callback Interface pointer
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*
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* Return Value:
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*
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* none
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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HRESULT _stdcall CWiaDataCallback::QueryInterface(const IID& iid, void** ppv)
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{
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*ppv = NULL;
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if (iid == IID_IUnknown || iid == IID_IWiaDataCallback)
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*ppv = (IWiaDataCallback*) this;
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else
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return E_NOINTERFACE;
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AddRef();
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return S_OK;
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}
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/**************************************************************************\
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* CWiaDataCallback::AddRef()
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*
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* Increment the Ref count
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*
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*
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* Arguments:
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*
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* none
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*
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* Return Value:
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*
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* ULONG - current ref count
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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ULONG _stdcall CWiaDataCallback::AddRef()
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{
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InterlockedIncrement((long*) &m_cRef);
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return m_cRef;
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}
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/**************************************************************************\
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* CWiaDataCallback::Release()
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*
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* Release the callback Interface
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*
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*
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* Arguments:
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*
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* none
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*
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* Return Value:
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*
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* ULONG - Current Ref count
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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ULONG _stdcall CWiaDataCallback::Release()
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{
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ULONG ulRefCount = m_cRef - 1;
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if (InterlockedDecrement((long*) &m_cRef) == 0)
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{
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delete this;
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return 0;
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}
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return ulRefCount;
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}
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/**************************************************************************\
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* CWiaDataCallback::CWiaDataCallback()
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*
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* Constructor for callback class
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*
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*
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* Arguments:
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*
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* none
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*
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* Return Value:
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*
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* none
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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CWiaDataCallback::CWiaDataCallback()
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{
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m_cRef = 0;
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m_pBuffer = NULL;
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m_BytesTransfered = 0;
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m_hPreviewWnd = NULL;
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}
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/**************************************************************************\
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* CWiaDataCallback::~CWiaDataCallback()
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*
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* Destructor for Callback class
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*
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*
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* Arguments:
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*
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* none
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*
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* Return Value:
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*
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* none
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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CWiaDataCallback::~CWiaDataCallback()
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{
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if (m_pBuffer != NULL)
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{
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LocalFree(m_pBuffer);
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m_pBuffer = NULL;
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}
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// destroy progress dlg
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m_pMainFrm->SetProgressText(TEXT("Ready"));
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m_pMainFrm->UpdateProgress(50);
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m_pMainFrm->DestroyProgressCtrl();
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}
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/**************************************************************************\
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* CWiaDataCallback::Initialize()
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*
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* Initializes Progress control.
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*
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*
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* Arguments:
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*
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* none
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*
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* Return Value:
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*
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* none
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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HRESULT _stdcall CWiaDataCallback::Initialize(HWND hPreviewWnd)
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{
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CWIATestApp* pApp = (CWIATestApp*)AfxGetApp();
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m_pMainFrm = (CMainFrame*)pApp->GetMainWnd();
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if (m_pMainFrm != NULL)
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{
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m_pMainFrm->InitializeProgressCtrl("Starting Transfer");
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}
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m_hPreviewWnd = hPreviewWnd;
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m_lPageCount = 0;
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return S_OK;
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}
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/**************************************************************************\
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* CWiaDataCallback::BandedDataCallback()
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*
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* Callback member which handles Banded Data transfers
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*
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*
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* Arguments:
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*
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* lMessage - callback message
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* lStatus - additional message information
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* lPercentComplete - current percent complete status
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* lOffset - amount of data offset (bytes)
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* lLength - amount of data read (bytes)
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* lReserved - not used
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* lResLength - not used
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* pbBuffer - Data header information
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*
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* Return Value:
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*
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* status
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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HRESULT _stdcall CWiaDataCallback::BandedDataCallback(
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LONG lMessage,
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LONG lStatus,
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LONG lPercentComplete,
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LONG lOffset,
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LONG lLength,
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LONG lReserved,
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LONG lResLength,
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BYTE* pbBuffer)
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{
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char szDBG[MAX_PATH];
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static BOOL bMorePages = FALSE;
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switch (lMessage)
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{
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case IT_MSG_DATA_HEADER:
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{
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PWIA_DATA_CALLBACK_HEADER pHeader = (PWIA_DATA_CALLBACK_HEADER)pbBuffer;
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m_MemBlockSize = pHeader->lBufferSize;
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//
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// If the Buffer is 0, then alloc a 64k chunk (default)
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//
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if(m_MemBlockSize <= 0)
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m_MemBlockSize = 65535;
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m_pBuffer = (PBYTE)LocalAlloc(LPTR,m_MemBlockSize);
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m_BytesTransfered = 0;
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m_cFormat = pHeader->guidFormatID;
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#ifdef _DEBUGCALLBACK
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sprintf(szDBG,"Reading Header information\n");
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OutputDebugString(szDBG);
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sprintf(szDBG,"Header info:\n");
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OutputDebugString(szDBG);
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sprintf(szDBG," lBufferSize = %li\n",pHeader->lBufferSize);
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OutputDebugString(szDBG);
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sprintf(szDBG," lFormat = %li\n",pHeader->lFormat);
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OutputDebugString(szDBG);
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sprintf(szDBG," BytesTransferred = %li\n",m_BytesTransfered);
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OutputDebugString(szDBG);
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#endif
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}
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break;
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case IT_MSG_DATA:
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{
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if (m_pBuffer != NULL)
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{
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if(bMorePages/*m_cFormat == CF_MULTI_TIFF*/){
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//
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// Display current page count + 1, because Page count is zero based.
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//
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sprintf(szDBG,"Page(%d) %d%% Complete..",(m_lPageCount + 1), lPercentComplete);
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}
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else
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sprintf(szDBG,"%d%% Complete..",lPercentComplete);
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m_pMainFrm->SetProgressText(szDBG);
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m_pMainFrm->UpdateProgress(lPercentComplete);
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m_BytesTransfered += lLength;
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if(m_BytesTransfered >= m_MemBlockSize){
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//
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// Alloc more memory for transfer buffer
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//
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m_MemBlockSize += (lLength * 2);
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m_pBuffer = (PBYTE)LocalReAlloc(m_pBuffer,m_MemBlockSize,LMEM_MOVEABLE);
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}
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#ifdef _DEBUGCALLBACK
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sprintf(szDBG," Memory BLOCK size = %li\n",m_MemBlockSize);
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OutputDebugString(szDBG);
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sprintf(szDBG," writing %li\n",lLength);
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OutputDebugString(szDBG);
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sprintf(szDBG," lOffset = %li, lLength = %li, BytesTransferred = %li\n",lOffset,lLength,m_BytesTransfered);
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OutputDebugString(szDBG);
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#endif
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memcpy(m_pBuffer + lOffset, pbBuffer, lLength);
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//
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// Paint preview window during callback
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//
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// WiaImgFmt_UNDEFINED
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// ???? m_cFormat == WiaImgFmt_BMP)
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if(m_cFormat == WiaImgFmt_MEMORYBMP)
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PaintPreviewWindow(lOffset);
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else if (m_cFormat == WiaImgFmt_TIFF) {
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if (lPercentComplete == 100) {
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OutputDebugString("----------------------------------> Paint a Page\n");
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}
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}
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}
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}
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break;
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case IT_MSG_STATUS:
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{
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if (lStatus & IT_STATUS_TRANSFER_FROM_DEVICE)
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{
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m_pMainFrm->SetProgressText(TEXT("Transfer from device"));
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m_pMainFrm->UpdateProgress(lPercentComplete);
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}
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else if (lStatus & IT_STATUS_PROCESSING_DATA)
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{
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m_pMainFrm->SetProgressText(TEXT("Processing Data"));
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m_pMainFrm->UpdateProgress(lPercentComplete);
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}
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else if (lStatus & IT_STATUS_TRANSFER_TO_CLIENT)
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{
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m_pMainFrm->SetProgressText(TEXT("Transfer to Client"));
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m_pMainFrm->UpdateProgress(lPercentComplete);
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}
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}
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break;
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case IT_MSG_NEW_PAGE:
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bMorePages = TRUE;
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PWIA_DATA_CALLBACK_HEADER pHeader = (PWIA_DATA_CALLBACK_HEADER)pbBuffer;
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m_lPageCount = pHeader->lPageCount;
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sprintf(szDBG,"IT_MSG_NEW_PAGE, page count: %d\n", pHeader->lPageCount);
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OutputDebugString(szDBG);
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break;
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}
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return S_OK;
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}
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/**************************************************************************\
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* CWiaDataCallback::PaintPreviewWindow()
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*
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* Paint buffer to preview window
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*
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*
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* Arguments:
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*
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* lOffset - Data offset
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*
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* Return Value:
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*
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* void
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*
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* History:
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*
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* 2/14/1999 Original Version
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*
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\**************************************************************************/
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void CWiaDataCallback::PaintPreviewWindow(long lOffset)
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{
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if (m_hPreviewWnd != NULL) {
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HDC hdc = NULL;
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HDC hdcm = NULL;
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LPBITMAPINFO pbmi = NULL;
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LPBITMAPINFO pbmih = NULL;
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PBYTE pDib = NULL;
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HBITMAP hBitmap = NULL;
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BITMAP bm;
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hdc = GetDC(m_hPreviewWnd);
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if(hdc != NULL){
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hdcm = CreateCompatibleDC(hdc);
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if(hdcm != NULL){
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pbmi = (LPBITMAPINFO)m_pBuffer;
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if (pbmi != NULL) {
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hBitmap = CreateDIBSection(hdc,pbmi,DIB_RGB_COLORS,(void **)&pDib,NULL,0);
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if (hBitmap != NULL) {
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memset(pDib,255,pbmi->bmiHeader.biSizeImage); // white preview backgound..
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memcpy(pDib,m_pBuffer + sizeof(BITMAPINFOHEADER) + (sizeof(RGBQUAD) * pbmi->bmiHeader.biClrUsed),lOffset);
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GetObject(hBitmap,sizeof(BITMAP),(LPSTR)&bm);
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SelectObject(hdcm,hBitmap);
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RECT ImageRect;
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RECT WindowRect;
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ImageRect.top = 0;
|
||
|
|
ImageRect.left = 0;
|
||
|
|
ImageRect.right = bm.bmWidth;
|
||
|
|
ImageRect.bottom = bm.bmHeight;
|
||
|
|
|
||
|
|
GetWindowRect(m_hPreviewWnd,&WindowRect);
|
||
|
|
ScreenRectToClientRect(m_hPreviewWnd,&WindowRect);
|
||
|
|
ScaleBitmapToDC(hdc,hdcm,&WindowRect,&ImageRect);
|
||
|
|
|
||
|
|
DeleteObject(hBitmap);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
DeleteDC(hdcm);
|
||
|
|
}
|
||
|
|
DeleteDC(hdc);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**************************************************************************\
|
||
|
|
* CWiaDataCallback::ScreenRectToClientRect()
|
||
|
|
*
|
||
|
|
* Converts a RECT into Client coordinates
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Arguments:
|
||
|
|
*
|
||
|
|
* hWnd - Client Window handle
|
||
|
|
* pRect - converted LPRECT
|
||
|
|
*
|
||
|
|
* Return Value:
|
||
|
|
*
|
||
|
|
* void
|
||
|
|
*
|
||
|
|
* History:
|
||
|
|
*
|
||
|
|
* 2/14/1999 Original Version
|
||
|
|
*
|
||
|
|
\**************************************************************************/
|
||
|
|
void CWiaDataCallback::ScreenRectToClientRect(HWND hWnd,LPRECT pRect)
|
||
|
|
{
|
||
|
|
POINT PtConvert;
|
||
|
|
|
||
|
|
PtConvert.x = pRect->left;
|
||
|
|
PtConvert.y = pRect->top;
|
||
|
|
|
||
|
|
//
|
||
|
|
// convert upper left point
|
||
|
|
//
|
||
|
|
|
||
|
|
ScreenToClient(hWnd,&PtConvert);
|
||
|
|
|
||
|
|
pRect->left = PtConvert.x;
|
||
|
|
pRect->top = PtConvert.y;
|
||
|
|
|
||
|
|
PtConvert.x = pRect->right;
|
||
|
|
PtConvert.y = pRect->bottom;
|
||
|
|
|
||
|
|
//
|
||
|
|
// convert lower right point
|
||
|
|
//
|
||
|
|
|
||
|
|
ScreenToClient(hWnd,&PtConvert);
|
||
|
|
|
||
|
|
pRect->right = PtConvert.x;
|
||
|
|
pRect->bottom = PtConvert.y;
|
||
|
|
|
||
|
|
pRect->bottom-=1;
|
||
|
|
pRect->left+=1;
|
||
|
|
pRect->right-=1;
|
||
|
|
pRect->top+=1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**************************************************************************\
|
||
|
|
* CWiaDataCallback::ScaleBitmapToDC()
|
||
|
|
*
|
||
|
|
* Draws a BITMAP to the target DC
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Arguments:
|
||
|
|
*
|
||
|
|
* hDC - Target DC
|
||
|
|
* hDCM - Source DC
|
||
|
|
* lpDCRect - DC window rect
|
||
|
|
* lpDIBRect - DIB's rect
|
||
|
|
*
|
||
|
|
* Return Value:
|
||
|
|
*
|
||
|
|
* void
|
||
|
|
*
|
||
|
|
* History:
|
||
|
|
*
|
||
|
|
* 2/14/1999 Original Version
|
||
|
|
*
|
||
|
|
\**************************************************************************/
|
||
|
|
void CWiaDataCallback::ScaleBitmapToDC(HDC hDC, HDC hDCM, LPRECT lpDCRect, LPRECT lpDIBRect)
|
||
|
|
{
|
||
|
|
// BitBlt(hDC,0,0,lpDIBRect->right,lpDIBRect->bottom,hDCM,0,0,SRCCOPY);
|
||
|
|
|
||
|
|
float lWidthVal = 1;
|
||
|
|
float lHeightVal = 1;
|
||
|
|
|
||
|
|
// Make sure to use the stretching mode best for color pictures
|
||
|
|
::SetStretchBltMode(hDC, COLORONCOLOR);
|
||
|
|
|
||
|
|
// Determine whether to call StretchDIBits() or SetDIBitsToDevice()
|
||
|
|
BOOL bSuccess;
|
||
|
|
if ((RECTWIDTH(lpDCRect) == RECTWIDTH(lpDIBRect)) &&
|
||
|
|
(RECTHEIGHT(lpDCRect) == RECTHEIGHT(lpDIBRect)))
|
||
|
|
bSuccess = ::BitBlt (hDC, // hDC
|
||
|
|
lpDCRect->left, // DestX
|
||
|
|
lpDCRect->top, // DestY
|
||
|
|
RECTWIDTH(lpDCRect), // nDestWidth
|
||
|
|
RECTHEIGHT(lpDCRect), // nDestHeight
|
||
|
|
hDCM,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
SRCCOPY);
|
||
|
|
else {
|
||
|
|
//Window width becomes smaller than original image width
|
||
|
|
if (RECTWIDTH(lpDIBRect) > lpDCRect->right - lpDCRect->left) {
|
||
|
|
lWidthVal = (float)(lpDCRect->right - lpDCRect->left)/RECTWIDTH(lpDIBRect);
|
||
|
|
}
|
||
|
|
//Window height becomes smaller than original image height
|
||
|
|
if (RECTHEIGHT(lpDIBRect) > lpDCRect->bottom - lpDCRect->top) {
|
||
|
|
lHeightVal = (float)(lpDCRect->bottom - lpDCRect->top)/RECTHEIGHT(lpDIBRect);
|
||
|
|
}
|
||
|
|
long ScaledWidth = (int)(RECTWIDTH(lpDIBRect) * min(lWidthVal,lHeightVal));
|
||
|
|
long ScaledHeight = (int)(RECTHEIGHT(lpDIBRect) * min(lWidthVal,lHeightVal));
|
||
|
|
bSuccess = ::StretchBlt(hDC, // hDC
|
||
|
|
lpDCRect->left, // DestX
|
||
|
|
lpDCRect->top, // DestY
|
||
|
|
ScaledWidth, // nDestWidth
|
||
|
|
ScaledHeight, // nDestHeight
|
||
|
|
hDCM,
|
||
|
|
/*lpDIBRect->left*/0, // SrcX
|
||
|
|
/*lpDIBRect->top*/0, // SrcY
|
||
|
|
RECTWIDTH(lpDIBRect), // wSrcWidth
|
||
|
|
RECTHEIGHT(lpDIBRect), // wSrcHeight
|
||
|
|
SRCCOPY); // dwROP
|
||
|
|
|
||
|
|
// update outline areas
|
||
|
|
// Invalidated right side rect
|
||
|
|
RECT WindowRect;
|
||
|
|
WindowRect.top = lpDCRect->top;
|
||
|
|
WindowRect.left = lpDCRect->left + ScaledWidth;
|
||
|
|
WindowRect.right = lpDCRect->right;
|
||
|
|
WindowRect.bottom = lpDCRect->bottom;
|
||
|
|
|
||
|
|
HBRUSH hBrush = CreateSolidBrush(GetBkColor(hDC));
|
||
|
|
FillRect(hDC,&WindowRect,hBrush);
|
||
|
|
|
||
|
|
// Invalidated bottom rect
|
||
|
|
WindowRect.top = lpDCRect->top + ScaledHeight;
|
||
|
|
WindowRect.left = lpDCRect->left;
|
||
|
|
WindowRect.right = lpDCRect->left + ScaledWidth;
|
||
|
|
WindowRect.bottom = lpDCRect->bottom;
|
||
|
|
|
||
|
|
FillRect(hDC,&WindowRect,hBrush);
|
||
|
|
DeleteObject(hBrush);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**************************************************************************\
|
||
|
|
* CWiaDataCallback::GetDataPtr()
|
||
|
|
*
|
||
|
|
* Returns the memory acquired during a transfer
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Arguments:
|
||
|
|
*
|
||
|
|
* none
|
||
|
|
*
|
||
|
|
* Return Value:
|
||
|
|
*
|
||
|
|
* BYTE* pBuffer - memory block
|
||
|
|
*
|
||
|
|
* History:
|
||
|
|
*
|
||
|
|
* 2/14/1999 Original Version
|
||
|
|
*
|
||
|
|
\**************************************************************************/
|
||
|
|
// GetDataPtr
|
||
|
|
BYTE* _stdcall CWiaDataCallback::GetDataPtr()
|
||
|
|
{
|
||
|
|
return m_pBuffer;
|
||
|
|
}
|