lyfz_repos/经典版源码/旧的后台处理/LYFZIPManage/JPEG.cpp

#include "stdafx.h"
#include "LYFZIPManage.h"
#include "JPEG.h"
CPicture::CPicture()
{
}
CPicture::~CPicture()
{
}
//-----------------------------------------------------------------------------
// Does:   Free The Allocated Memory That Holdes The IPicture Interface Data
// ~~~~    And Clear Picture Information
//
// Note:   This Might Also Be Useful If U Only Need To Show The Picture Once
// ~~~~~   Or If U Copy The Picture To The Device Context, So It Can Still
//         Remain On Screen - But IPicture Data Is Not Needed No More
//
//-----------------------------------------------------------------------------
void CPicture::UnloadPicture()
//=============================================================================
{
 if(m_pPict != NULL){
  m_pPict->Release();
  m_pPict = NULL;
 }
}
//-----------------------------------------------------------------------------
// Does:   Open a Resource And Load It Into IPicture (Interface)
// ~~~~    (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)
//
// Note:   When Adding a Bitmap Resource It Would Automatically Show On "Bitmap"
// ~~~~    This NOT Good Coz We Need To Load It From a Custom Resource "BMP"
//         To Add a Custom Rresource: Import Resource -> Open As -> Custom
//         (Both .BMP And .DIB Should Be Found Under "BMP")
//
// InPut:  ResourceName - As a UINT Defined (Example: IDR_PICTURE_RESOURCE)
// ~~~~~   ResourceType - Type Name (Example: "JPG")
//
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
BOOL CPicture::Load(HINSTANCE hInstance,LPCTSTR lpszResourceName, LPCSTR ResourceType)
//=============================================================================
{
  HGLOBAL  hGlobal = NULL;
  HRSRC  hSource = NULL;
  LPVOID  lpVoid  = NULL;
  int   nSize   = 0;
  BOOL  bResult=FALSE;
  if(m_pPict != NULL) UnloadPicture(); // Important - Avoid Leaks...
  hSource = FindResource(hInstance, lpszResourceName, ResourceType);
  if(hSource == NULL)
  {
 // HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
//  MessageBoxEx(NULL, "´íÎó´úºÅ:1\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
  return(FALSE);
  }
  hGlobal = LoadResource(hInstance, hSource);
  if(hGlobal == NULL)
  {
 // HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
 // MessageBoxEx(NULL, "´íÎó´úºÅ:2\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
  return(FALSE);
  }
  lpVoid = LockResource(hGlobal);
  if(lpVoid == NULL)
  {
  //HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
//  MessageBoxEx(NULL, "´íÎó´úºÅ:3\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
  return(FALSE);
  }



 nSize = (UINT)SizeofResource(hInstance, hSource);
 if(LoadPictureData((BYTE*)hGlobal, nSize)) bResult = TRUE;
 UnlockResource(hGlobal); // 16Bit Windows Needs This
 FreeResource(hGlobal); // 16Bit Windows Needs This (32Bit - Automatic Release)
 return(bResult);
}



//-----------------------------------------------------------------------------
// Does:   Open a File And Load It Into IPicture (Interface)
// ~~~~    (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)
//
// InPut:  sFilePathName - Path And FileName Target To Save
// ~~~~~   
//
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
BOOL CPicture::Load(CString sFilePathName)
//=============================================================================
{
 //if(!PathFileExists(sFilePathName))return FALSE;
 BOOL bResult = FALSE;
 CFile PictureFile;
 CFileException e;
 int nSize = 0;
 if(m_pPict != NULL) UnloadPicture(); // Important - Avoid Leaks...



 if(PictureFile.Open(sFilePathName, CFile::modeRead | CFile::typeBinary, &e))
  {
  nSize = PictureFile.GetLength();
  BYTE* pBuffer = new BYTE[nSize];
 
  if(PictureFile.Read(pBuffer, nSize) > 0)
   {
   if(LoadPictureData(pBuffer, nSize)) bResult = TRUE;
   }



  PictureFile.Close();
  delete [] pBuffer;
  }
 else // Open Failed...
  {
  TCHAR szCause[255];
  e.GetErrorMessage(szCause, 255, NULL);
  //HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
 // MessageBoxEx(NULL, "´íÎó´úºÅ:4", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
  bResult = FALSE;
  }
 return(bResult);
}

//-----------------------------------------------------------------------------
// Does:   Read The Picture Data From a Source (File / Resource)
// ~~~~    And Load It Into The Current IPicture Object In Use
//
// InPut:  Buffer Of Data Source (File / Resource) And Its Size
// ~~~~~   
//
// OutPut: Feed The IPicture Object With The Picture Data
// ~~~~~~  (Use Draw Functions To Show It On a Device Context)
//         TRUE If Succeeded...
//-----------------------------------------------------------------------------
BOOL CPicture::LoadPictureData(BYTE *pBuffer, int nSize)
//=============================================================================
{
 BOOL bResult = FALSE;
 HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, nSize);



 if(hGlobal == NULL)
  {
 // HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
//  MessageBoxEx(NULL,"´íÎó´úºÅ:5\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
  return(FALSE);
  }
 void* pData = GlobalLock(hGlobal);
 memcpy(pData, pBuffer, nSize);
 GlobalUnlock(hGlobal);
 IStream* pStream = NULL;
 if(CreateStreamOnHGlobal(hGlobal, TRUE, &pStream) == S_OK)
  {
  HRESULT hr;
  if((hr = OleLoadPicture(pStream, nSize, FALSE, IID_IPicture, (LPVOID *)&m_pPict)) == E_NOINTERFACE)
   {
   //HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
  // MessageBoxEx(NULL, "´íÎó´úºÅ:6\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
   return(FALSE);
   }
  else // S_OK
   {
   pStream->Release();
   pStream = NULL;
   bResult = TRUE;
  
      }
    }
  


 GlobalFree(hGlobal); // 16Bit Windows Needs This (32Bit - Automatic Release)



 return(bResult);
}



//-----------------------------------------------------------------------------
// Does:   Draw The Loaded Picture Direct To The Client DC
// ~~~~
//
// Note:   Bigger OR Smaller Dimentions Than The Original Picture Size
// ~~~~    Will Draw The Picture Streached To Its New Given NEW Dimentions...
//
// InPut:  pDC - Given DC To Draw On
// ~~~~~   pSrcRect- Dimentions Of The Picture To Draw From(As a Rectangle)
//   DrawRect - Dimentions Of The Picture To Draw To(As a Rectangle)
// OutPut: TRUE If Succeeded...
// ~~~~~~
//-----------------------------------------------------------------------------
//=============================================================================



void CPicture::Render(CDC* pDC, LPRECT pDrawRect, LPRECT pSrcRect/*=NULL*/,LPCRECT prcWBounds/*=NULL*/)
{
    
	if(pDC == NULL || m_pPict == NULL) return ;
    CRect recrDest(pDrawRect);
    long Width  = 0;
    long Height = 0;
    m_pPict->get_Width(&Width);
    m_pPict->get_Height(&Height);
    CRect SrcRect(0,0,Width,Height);
    if(pSrcRect){
    SrcRect=*pSrcRect;
	}
    CRect DrawRect(pDrawRect);
    HRESULT hrP = NULL;
    hrP = m_pPict->Render(pDC->m_hDC,
                      DrawRect.left,                  // Left
                      DrawRect.top,                   // Top
                      DrawRect.Width(), // Right
                      DrawRect.Height(), // Bottom
                      SrcRect.left,
                      SrcRect.top,
                      SrcRect.Width(),
                      SrcRect.Height(),
                      prcWBounds);
    if (SUCCEEDED(hrP)) return;
   AfxThrowMemoryException();
    return;
}//-----------------------------------------------------------------------------


LONG      CPicture::get_Height()
{
 LONG   nHeight = 0;
 if (m_pPict != NULL)
 {
  m_pPict->get_Height(&nHeight);
 }
 return nHeight;
}

LONG  CPicture::get_Width()
{
 LONG  nWidth = 0;
 if (m_pPict != NULL)
 {
  m_pPict->get_Width(&nWidth);
 }
 return nWidth;
}

void CPicture::RenderBmp(CDC *pDC, LPRECT pDrawRect, LPRECT pSrcRect, LPCRECT prcWBounds)
{
  
	if(pDC == NULL || m_pPict == NULL) return ;
    CRect recrDest(pDrawRect);
    long Width  = 0;
    long Height = 0;
    m_pPict->get_Width(&Width);
    m_pPict->get_Height(&Height);
    CRect SrcRect(0,0,Width,Height);
    if(pSrcRect){
    SrcRect=*pSrcRect;
	}
    CRect DrawRect(pDrawRect);
    HRESULT hrP = NULL;
    hrP = m_pPict->Render(pDC->m_hDC,
                      DrawRect.left,                  // Left
                      DrawRect.bottom-1,                   // Top
                      DrawRect.Width(), // Right
                      -DrawRect.Height()+1, // Bottom
                      SrcRect.left,
                      SrcRect.top,
                      SrcRect.Width(),
                      SrcRect.Height()-1,
                      prcWBounds);
    if (SUCCEEDED(hrP)) return;
   AfxThrowMemoryException();
    return;
}