FSBII（二）class CPicture : public CPictureHolder

「爱情、让人受尽委屈。」 2022-06-13 06:43 162阅读 0赞

// Picture.h: interface for the CPicture class.
    //
    //
    
    #if !defined(AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_)
    #define AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_
    
    #if _MSC_VER > 1000
    #pragma once
    #endif // _MSC_VER > 1000
    
    #include <afxctl.h>
    
    class CPicture : public CPictureHolder
    {
    public:
    	CPicture();
    	virtual ~CPicture();
    	BOOL Load(CString sFilePathName);				//从文件读取图像
    	BOOL Load(HINSTANCE hInstance,LPCTSTR lpszResourceName, LPCSTR ResourceType);//从资源读取图像
    	BOOL LoadPictureData(BYTE* pBuffer, int nSize);	//从内存读取图像
    	BOOL SaveAsBitmap(CString sFilePathName);		//写入到BMP文件
    	// 在给定的DC上画图，
    	void Render(CDC* pDC,
    		LPRECT pDrawRect,			//目标矩形，单位是逻辑坐标单位
    		LPRECT pSrcRect = NULL,		//来源矩形，单位是0.01毫米,如果为空，则拉伸整个图像到目标矩形
    		LPCRECT prcWBounds = NULL);	//图元文件专用，绑定矩形
    	void  UnloadPicture();//释放图像，作用同CPictureHolder::~CPictureHolder()
    public:
    	LONG      get_Height(); // 以0.01毫米为单位的图像高度
    	LONG      get_Width();  // 以0.01毫米为单位的图像宽度
    	
    };
    
    #endif // !defined(AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_)

// Picture.cpp: implementation of the CPicture class.
    //
    //
    
    #include "stdafx.h"
    #include "autoupdate.h"
    #include "Picture.h"
    
    #ifdef _DEBUG
    #undef THIS_FILE
    static char THIS_FILE[]=__FILE__;
    #define new DEBUG_NEW
    #endif
    
    //
    // Construction/Destruction
    //
    
    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(hWnd, "FindResource() Failed\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(hWnd, "LoadResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
    		return(FALSE);
    	}
    	lpVoid = LockResource(hGlobal);
    	if(lpVoid == NULL)
    	{
    		HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
    		//MessageBoxEx(hWnd, "LockResource() Failed\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(hWnd, szCause, 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(hWnd, "Can not allocate enough memory\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(hWnd, "IPicture interface is not supported\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
    			return(FALSE);
    		}
    		else // S_OK
    		{
    			pStream->Release();
    			pStream = NULL;
    			bResult = TRUE;
    			
    		}
    	}
    	FreeResource(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.Height(),
    		SrcRect.Width(),
    		-SrcRect.Height(),
    		prcWBounds);
    	
        if (SUCCEEDED(hrP)) return;
    	AfxThrowMemoryException();
        return;
    }//-----------------------------------------------------------------------------
    // Does:   Saves The Picture That Is Stored In The IPicture Object As a Bitmap
    // ~~~~    (Converts From Any Known Picture Type To a Bitmap / Icon File)
    //
    // InPut:  sFilePathName - Path And FileName Target To Save
    // ~~~~~
    //
    // OutPut: TRUE If Succeeded...
    // ~~~~~~
    //-----------------------------------------------------------------------------
    BOOL CPicture::SaveAsBitmap(CString sFilePathName)
    //=============================================================================
    {
    	BOOL bResult = FALSE;
    	ILockBytes *Buffer = 0;
    	IStorage   *pStorage = 0;
    	IStream    *FileStream = 0;
    	BYTE    *BufferBytes;
    	STATSTG  BytesStatistics;
    	DWORD  OutData;
    	long  OutStream;
    	CFile  BitmapFile; CFileException e;
    	double  SkipFloat = 0;
    	DWORD  ByteSkip = 0;
    	_ULARGE_INTEGER RealData;
    	
    	CreateILockBytesOnHGlobal(NULL, TRUE, &Buffer); // Create ILockBytes Buffer
    	HRESULT hr = ::StgCreateDocfileOnILockBytes(Buffer,
    		STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE, 0, &pStorage);
    	hr = pStorage->CreateStream(L"PICTURE",
    		STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE, 0, 0, &FileStream);
    	
    	m_pPict->SaveAsFile(FileStream, TRUE, &OutStream); // Copy Data Stream
    	FileStream->Release();
    	pStorage->Release();
    	Buffer->Flush(); 
    
    	// Get Statistics For Final Size Of Byte Array
    	Buffer->Stat(&BytesStatistics, STATFLAG_NONAME);
    	// Cut UnNeeded Data Coming From SaveAsFile() (Leave Only "Pure" Picture Data)
    	SkipFloat = (double(OutStream) / 512); // Must Be In a 512 Blocks...
    	if(SkipFloat > DWORD(SkipFloat)) ByteSkip = (DWORD)SkipFloat + 1;
    	else ByteSkip = (DWORD)SkipFloat;
    	ByteSkip = ByteSkip * 512; // Must Be In a 512 Blocks...
    	
    	// Find Difference Between The Two Values
    	ByteSkip = (DWORD)(BytesStatistics.cbSize.QuadPart - ByteSkip);
    	// Allocate Only The "Pure" Picture Data
    	RealData.LowPart = 0;
    	RealData.HighPart = 0;
    	RealData.QuadPart = ByteSkip;
    	BufferBytes = (BYTE*)malloc(OutStream);
    	if(BufferBytes == NULL)
    	{
    		Buffer->Release();
    		HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
    		//MessageBoxEx(hWnd, "Can not allocate enough memory\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
    	}
    	Buffer->ReadAt(RealData, BufferBytes, OutStream, &OutData);
    	if(BitmapFile.Open(sFilePathName, CFile::typeBinary | CFile::modeCreate | CFile::modeWrite, &e))
    	{
    		BitmapFile.Write(BufferBytes, OutData);
    		BitmapFile.Close();
    		bResult = TRUE;
    	}
    	else // Write File Failed...
    	{
    		TCHAR szCause[255];
    		e.GetErrorMessage(szCause, 255, NULL);
    		HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;
    		//MessageBoxEx(hWnd, szCause, ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);
    		bResult = FALSE;
    	}
    	Buffer->Release();
    	free(BufferBytes);
    	return(bResult);
    }
    
    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;
    }