scbc_repos/CTSManager/CTSManager/EnBitmap.cpp

//////////////////////////////////////////////////////////////////////

#include "pch.h"
#include "EnBitmap.h"
#include <AFXPRIV.H>
#include "ImageHelper.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#define new DEBUG_NEW
#endif

const int HIMETRIC_INCH = 2540;

enum
{
	FT_BMP,
	FT_ICO,
	FT_JPG,
	FT_GIF,

	FT_UNKNOWN
};

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CEnBitmap::CEnBitmap()
{

}

CEnBitmap::~CEnBitmap()
{

}

BOOL CEnBitmap::LoadImage(UINT uIDRes, LPCTSTR szResourceType, HMODULE hInst, COLORREF crBack)
{
	ASSERT(m_hObject == NULL);      // only attach once, detach on destroy

	if (m_hObject != NULL)
		return FALSE;

	return Attach(LoadImageResource(uIDRes, szResourceType, hInst, crBack));
}

BOOL CEnBitmap::LoadImage(LPCTSTR szImagePath, COLORREF crBack)
{
	//如果原先存在就去除
	if (m_hObject != NULL)
	{
		DeleteObject();
		Detach();
	}

	return Attach(LoadImageFile(szImagePath, crBack));
}

HBITMAP CEnBitmap::LoadImageFile(LPCTSTR szImagePath, COLORREF crBack)
{
	int nType = GetFileType(szImagePath);

	switch (nType)
	{
		// the reason for this is that i suspect it is more efficient to load
		// bmps this way since it avoids creating device contexts etc that the 
		// IPicture methods requires. that method however is still valuable
		// since it handles other image types and transparency
	case FT_BMP:
		return (HBITMAP)::LoadImage(NULL, szImagePath, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

	case FT_UNKNOWN:
		return NULL;

	default: // all the rest
	{
		USES_CONVERSION;
		IPicture* pPicture = NULL;

		HBITMAP hbm = NULL;
		HRESULT hr = OleLoadPicturePath(T2OLE(szImagePath), NULL, 0, crBack, IID_IPicture, (LPVOID*)&pPicture);

		if (pPicture)
		{
			hbm = ExtractBitmap(pPicture, crBack);
			pPicture->Release();
		}

		return hbm;
	}
	}

	return NULL; // can't get here
}

HBITMAP CEnBitmap::LoadImageResource(UINT uIDRes, LPCTSTR szResourceType, HMODULE hInst, COLORREF crBack)
{
	BYTE* pBuff = NULL;
	int nSize = 0;
	HBITMAP hbm = NULL;

	// first call is to get buffer size
	if (GetResource(MAKEINTRESOURCE(uIDRes), szResourceType, hInst, 0, nSize))
	{
		if (nSize > 0)
		{
			pBuff = new BYTE[nSize];

			// this loads it
			if (GetResource(MAKEINTRESOURCE(uIDRes), szResourceType, hInst, pBuff, nSize))
			{
				IPicture* pPicture = LoadFromBuffer(pBuff, nSize);

				if (pPicture)
				{
					hbm = ExtractBitmap(pPicture, crBack);
					pPicture->Release();
				}
			}

			delete[] pBuff;
		}
	}

	return hbm;
}

IPicture* CEnBitmap::LoadFromBuffer(BYTE* pBuff, int nSize)
{
	bool bResult = false;

	HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, nSize);
	void* pData = GlobalLock(hGlobal);
	memcpy(pData, pBuff, nSize);
	GlobalUnlock(hGlobal);

	IStream* pStream = NULL;
	IPicture* pPicture = NULL;

	if (CreateStreamOnHGlobal(hGlobal, TRUE, &pStream) == S_OK)
	{
		HRESULT hr = OleLoadPicture(pStream, nSize, FALSE, IID_IPicture, (LPVOID*)&pPicture);
		pStream->Release();
	}

	return pPicture; // caller releases
}

BOOL CEnBitmap::GetResource(LPCTSTR lpName, LPCTSTR lpType, HMODULE hInst, void* pResource, int& nBufSize)
{
	HRSRC		hResInfo;
	HANDLE		hRes;
	LPSTR		lpRes = NULL;
	int			nLen = 0;
	bool		bResult = FALSE;

	// Find the resource
	hResInfo = FindResource(hInst, lpName, lpType);

	if (hResInfo == NULL)
		return false;

	// Load the resource
	hRes = LoadResource(hInst, hResInfo);

	if (hRes == NULL)
		return false;

	// Lock the resource
	lpRes = (char*)LockResource(hRes);

	if (lpRes != NULL)
	{
		if (pResource == NULL)
		{
			nBufSize = SizeofResource(hInst, hResInfo);
			bResult = true;
		}
		else
		{
			if (nBufSize >= (int)SizeofResource(hInst, hResInfo))
			{
				memcpy(pResource, lpRes, nBufSize);
				bResult = true;
			}
		}

		UnlockResource(hRes);
	}

	// Free the resource
	FreeResource(hRes);

	return bResult;
}

HBITMAP CEnBitmap::ExtractBitmap(IPicture* pPicture, COLORREF crBack)
{
	ASSERT(pPicture);

	if (!pPicture)
		return NULL;

	CBitmap bmMem;
	CDC dcMem;
	CDC* pDC = CWnd::GetDesktopWindow()->GetDC();

	if (dcMem.CreateCompatibleDC(pDC))
	{
		long hmWidth;
		long hmHeight;

		pPicture->get_Width(&hmWidth);
		pPicture->get_Height(&hmHeight);

		int nWidth = MulDiv(hmWidth, pDC->GetDeviceCaps(LOGPIXELSX), HIMETRIC_INCH);
		int nHeight = MulDiv(hmHeight, pDC->GetDeviceCaps(LOGPIXELSY), HIMETRIC_INCH);

		if (bmMem.CreateCompatibleBitmap(pDC, nWidth, nHeight))
		{
			CBitmap* pOldBM = dcMem.SelectObject(&bmMem);

			if (crBack != -1)
				dcMem.FillSolidRect(0, 0, nWidth, nHeight, crBack);

			HRESULT hr = pPicture->Render(dcMem, 0, 0, nWidth, nHeight, 0, hmHeight, hmWidth, -hmHeight, NULL);
			dcMem.SelectObject(pOldBM);
		}
	}

	CWnd::GetDesktopWindow()->ReleaseDC(pDC);

	return (HBITMAP)bmMem.Detach();
}

int CEnBitmap::GetFileType(LPCTSTR szImagePath)
{
	CString sPath(szImagePath);
	sPath.MakeUpper();

	if (sPath.Find(".BMP") > 0)
		return FT_BMP;

	else if (sPath.Find(".ICO") > 0)
		return FT_ICO;

	else if (sPath.Find(".JPG") > 0 || sPath.Find(".JPEG") > 0)
		return FT_JPG;

	else if (sPath.Find(".GIF") > 0)
		return FT_GIF;

	// else
	return FT_UNKNOWN;
}

/////////////////////////////////////////////////////////////////////
// Converts a bitmap to a region
//
//	BitmapToRegion :	Create a region from the "non-transparent" pixels of a bitmap
//	Author :			Jean-Edouard Lachand-Robert (http://www.geocities.com/Paris/LeftBank/1160/resume.htm), June 1998.
//
//	hBmp :				Source bitmap
//	cTransparentColor :	Color base for the "transparent" pixels (default is black)
//	cTolerance :		Color tolerance for the "transparent" pixels.
//
//	A pixel is assumed to be transparent if the value of each of its 3 components (blue, green and red) is 
//	greater or equal to the corresponding value in cTransparentColor and is lower or equal to the 
//	corresponding value in cTransparentColor + cTolerance.
//
HRGN CEnBitmap::BitmapToRegion(COLORREF cTransparentColor, COLORREF cTolerance)
{
	HBITMAP hBmp = (HBITMAP)GetSafeHandle();
	HRGN hRgn = NULL;

	if (hBmp)
	{
		// Create a memory DC inside which we will scan the bitmap content
		HDC hMemDC = CreateCompatibleDC(NULL);
		if (hMemDC)
		{
			// Get bitmap size
			BITMAP bm;
			::GetObject(hBmp, sizeof(bm), &bm);

			// Create a 32 bits depth bitmap and select it into the memory DC 
			BITMAPINFOHEADER RGB32BITSBITMAPINFO = {
					sizeof(BITMAPINFOHEADER),	// biSize 
					bm.bmWidth,					// biWidth; 
					bm.bmHeight,				// biHeight; 
					1,							// biPlanes; 
					32,							// biBitCount 
					BI_RGB,						// biCompression; 
					0,							// biSizeImage; 
					0,							// biXPelsPerMeter; 
					0,							// biYPelsPerMeter; 
					0,							// biClrUsed; 
					0							// biClrImportant; 
			};
			VOID* pbits32;
			HBITMAP hbm32 = CreateDIBSection(hMemDC, (BITMAPINFO*)&RGB32BITSBITMAPINFO, DIB_RGB_COLORS, &pbits32, NULL, 0);
			if (hbm32)
			{
				HBITMAP holdBmp = (HBITMAP)SelectObject(hMemDC, hbm32);

				// Create a DC just to copy the bitmap into the memory DC
				HDC hDC = CreateCompatibleDC(hMemDC);
				if (hDC)
				{
					// Get how many bytes per row we have for the bitmap bits (rounded up to 32 bits)
					BITMAP bm32;
					::GetObject(hbm32, sizeof(bm32), &bm32);
					while (bm32.bmWidthBytes % 4)
						bm32.bmWidthBytes++;

					// Copy the bitmap into the memory DC
					HBITMAP holdBmp = (HBITMAP)SelectObject(hDC, hBmp);
					BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY);

					// For better performances, we will use the ExtCreateRegion() function to create the
					// region. This function take a RGNDATA structure on entry. We will add rectangles by
					// amount of ALLOC_UNIT number in this structure.
#define ALLOC_UNIT	100
					DWORD maxRects = ALLOC_UNIT;
					HANDLE hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects));
					RGNDATA* pData = (RGNDATA*)GlobalLock(hData);
					pData->rdh.dwSize = sizeof(RGNDATAHEADER);
					pData->rdh.iType = RDH_RECTANGLES;
					pData->rdh.nCount = pData->rdh.nRgnSize = 0;
					SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);

					// Keep on hand highest and lowest values for the "transparent" pixels
					BYTE lr = GetRValue(cTransparentColor);
					BYTE lg = GetGValue(cTransparentColor);
					BYTE lb = GetBValue(cTransparentColor);
					BYTE hr = min(0xff, lr + GetRValue(cTolerance));
					BYTE hg = min(0xff, lg + GetGValue(cTolerance));
					BYTE hb = min(0xff, lb + GetBValue(cTolerance));

					// Scan each bitmap row from bottom to top (the bitmap is inverted vertically)
					BYTE* p32 = (BYTE*)bm32.bmBits + (bm32.bmHeight - 1) * bm32.bmWidthBytes;
					for (int y = 0; y < bm.bmHeight; y++)
					{
						// Scan each bitmap pixel from left to right
						for (int x = 0; x < bm.bmWidth; x++)
						{
							// Search for a continuous range of "non transparent pixels"
							int x0 = x;
							LONG* p = (LONG*)p32 + x;
							while (x < bm.bmWidth)
							{
								BYTE b = GetRValue(*p);
								if (b >= lr && b <= hr)
								{
									b = GetGValue(*p);
									if (b >= lg && b <= hg)
									{
										b = GetBValue(*p);
										if (b >= lb && b <= hb)
											// This pixel is "transparent"
											break;
									}
								}
								p++;
								x++;
							}

							if (x > x0)
							{
								// Add the pixels (x0, y) to (x, y+1) as a new rectangle in the region
								if (pData->rdh.nCount >= maxRects)
								{
									GlobalUnlock(hData);
									maxRects += ALLOC_UNIT;
									hData = GlobalReAlloc(hData, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), GMEM_MOVEABLE);
									pData = (RGNDATA*)GlobalLock(hData);
								}
								RECT* pr = (RECT*)&pData->Buffer;
								SetRect(&pr[pData->rdh.nCount], x0, y, x, y + 1);
								if (x0 < pData->rdh.rcBound.left)
									pData->rdh.rcBound.left = x0;
								if (y < pData->rdh.rcBound.top)
									pData->rdh.rcBound.top = y;
								if (x > pData->rdh.rcBound.right)
									pData->rdh.rcBound.right = x;
								if (y + 1 > pData->rdh.rcBound.bottom)
									pData->rdh.rcBound.bottom = y + 1;
								pData->rdh.nCount++;

								// On Windows98, ExtCreateRegion() may fail if the number of rectangles is too
								// large (ie: > 4000). Therefore, we have to create the region by multiple steps.
								if (pData->rdh.nCount == 2000)
								{
									HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
									if (hRgn)
									{
										CombineRgn(hRgn, hRgn, h, RGN_OR);
										::DeleteObject(h);
									}
									else
										hRgn = h;
									pData->rdh.nCount = 0;
									SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
								}
							}
						}

						// Go to next row (remember, the bitmap is inverted vertically)
						p32 -= bm32.bmWidthBytes;
					}

					// Create or extend the region with the remaining rectangles
					HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
					if (hRgn)
					{
						CombineRgn(hRgn, hRgn, h, RGN_OR);
						::DeleteObject(h);
					}
					else
						hRgn = h;

					// Clean up
					GlobalFree(hData);
					SelectObject(hDC, holdBmp);
					DeleteDC(hDC);
				}

				::DeleteObject(SelectObject(hMemDC, holdBmp));
			}

			DeleteDC(hMemDC);
		}
	}

	return hRgn;
}

BOOL CEnBitmap::Draw(CDC* pDC, LPRECT r)
{
	CDC dc;
	dc.CreateCompatibleDC(pDC);
	CBitmap* bmp = dc.SelectObject(this);
	pDC->BitBlt(r->left, r->top, r->right - r->left, r->bottom - r->top, &dc, 0, 0, SRCCOPY);
	dc.SelectObject(bmp);
	return TRUE;
}

// TransparentBlt	- Copies a bitmap transparently onto the destination DC
// hdcDest		- Handle to destination device context 
// nXDest		- x-coordinate of destination rectangle's upper-left corner 
// nYDest		- y-coordinate of destination rectangle's upper-left corner 
// nWidth		- Width of destination rectangle 
// nHeight		- height of destination rectangle 
// hBitmap		- Handle of the source bitmap
// nXSrc		- x-coordinate of source rectangle's upper-left corner 
// nYSrc		- y-coordinate of source rectangle's upper-left corner 
// colorTransparent	- The transparent color
// hPal			- Logical palette to be used with bitmap. Can be NULL

void CEnBitmap::TransparentBlt(CDC& dc, CRect rc, UINT colorTransparent)
{
	CDC pDC;
	pDC.CreateCompatibleDC(&dc);
	HBITMAP hOldBmp = (HBITMAP) ::SelectObject(pDC.m_hDC, m_hObject);

	::TransparentBlt(dc.GetSafeHdc(), rc.left, rc.top, rc.Width(), rc.Height(), pDC.GetSafeHdc(), 0, 0, GetWidth(), GetHeight(), colorTransparent);
	::SelectObject(pDC.m_hDC, hOldBmp);
	pDC.DeleteDC();
}

// DrawGreyScale    - Draws a bitmap in Grey scale
// pDC              - Pointer to target device context
// hDIB             - Handle of device-independent bitmap
//
void CEnBitmap::DrawGreyScale(CDC* pDC)
{
	CPalette pal;
	CPalette* pOldPalette = 0;

	HBITMAP hBmp = (HBITMAP)this->GetSafeHandle();

	// allocate memory for extended image information
	BITMAPINFO& bmInfo = *(LPBITMAPINFO) new BYTE[sizeof(BITMAPINFO) + 8];
	memset(&bmInfo, 0, sizeof(BITMAPINFO) + 8);
	bmInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

	// get extended information about image (length, compression, length of color table if exist, ...)
	DWORD res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, GetHeight(), 0, &bmInfo, DIB_RGB_COLORS);
	// allocate memory for image data (colors)
	LPBYTE pBits = new BYTE[bmInfo.bmiHeader.biSizeImage + 4];

	res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, bmInfo.bmiHeader.biHeight, pBits, &bmInfo, DIB_RGB_COLORS);

	int nColors = bmInfo.bmiHeader.biClrUsed ? bmInfo.bmiHeader.biClrUsed :
		1 << bmInfo.bmiHeader.biBitCount;

	int nWidth = bmInfo.bmiHeader.biWidth;
	int nHeight = bmInfo.bmiHeader.biHeight;

	// Compute the address of the bitmap bits
	LPVOID lpDIBBits;
	if (bmInfo.bmiHeader.biBitCount > 8)
		lpDIBBits = (LPVOID)((LPDWORD)(pBits +
			bmInfo.bmiHeader.biClrUsed) +
			((bmInfo.bmiHeader.biCompression == BI_BITFIELDS) ? 3 : 0));
	else
		lpDIBBits = (LPVOID)(pBits + nColors);

	// Create the palette if needed
	if (pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE && nColors <= 256)
	{
		// The device supports a palette and bitmap has color table

		// Allocate memory for a palette
		UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * nColors);
		LOGPALETTE* pLP = (LOGPALETTE*) new BYTE[nSize];

		pLP->palVersion = 0x300;
		pLP->palNumEntries = nColors;

		for (int i = 0; i < nColors; i++)
		{
			int nGrey = Grey(bmInfo.bmiColors[i].rgbRed, bmInfo.bmiColors[i].rgbGreen,
				bmInfo.bmiColors[i].rgbBlue);
			pLP->palPalEntry[i].peRed = nGrey;
			pLP->palPalEntry[i].peGreen = nGrey;
			pLP->palPalEntry[i].peBlue = nGrey;
			pLP->palPalEntry[i].peFlags = 0;
		}

		pal.CreatePalette(pLP);

		delete[] pLP;

		// Select the palette
		pOldPalette = pDC->SelectPalette(&pal, FALSE);
		pDC->RealizePalette();
	}
	else
	{
		// Modify the bitmaps pixels directly
		// Note : This ends up changing the DIB. If that is not acceptable then
		// copy the DIB and then change the copy rather than the original
		if (bmInfo.bmiHeader.biBitCount == 24 || bmInfo.bmiHeader.biBitCount == 32)
		{
			BYTE* dst = (BYTE*)lpDIBBits;
			int Size = nWidth * nHeight;

			while (Size--)
			{
				int nGrey = Grey(dst[2], dst[1], dst[0]);

				dst[0] = (BYTE)nGrey;
				dst[1] = (BYTE)nGrey;
				dst[2] = (BYTE)nGrey;
				dst += 4;
			}
		}
		else if (bmInfo.bmiHeader.biBitCount == 16)
		{
			WORD* dst = (WORD*)lpDIBBits;
			int Size = nWidth * nHeight;

			while (Size--)
			{
				BYTE b = (BYTE)((*dst) & (0x1F));
				BYTE g = (BYTE)(((*dst) >> 5) & (0x1F));
				BYTE r = (BYTE)(((*dst) >> 10) & (0x1F));

				int nGrey = Grey(r, g, b);

				*dst++ = ((WORD)(((BYTE)(nGrey) | ((WORD)((BYTE)(nGrey)) << 5)) | (((DWORD)(BYTE)(nGrey)) << 10)));
			}
		}
	}

	// Draw the image 
	::SetDIBitsToDevice(pDC->m_hDC,    // hDC
		0,                             // XDest
		0,                             // YDest
		nWidth,                        // nDestWidth
		nHeight,                       // nDestHeight
		0,                             // XSrc
		0,                             // YSrc
		0,                             // nStartScan
		nHeight,                       // nNumScans
		lpDIBBits,                     // lpBits
		&bmInfo,            // lpBitsInfo
		DIB_RGB_COLORS);               // wUsage


	if (pOldPalette)
		pDC->SelectPalette(pOldPalette, FALSE);
}

//
//      DitherBlt :     Draw a bitmap dithered (3D grayed effect like disabled buttons in toolbars) into a destination DC
//      Author :        Jean-Edouard Lachand-Robert (iamwired@geocities.com), June 1997.
//
//      hdcDest :       destination DC
//      nXDest :        x coordinate of the upper left corner of the destination rectangle into the DC
//      nYDest :        y coordinate of the upper left corner of the destination rectangle into the DC
//      nWidth :        width of the destination rectangle into the DC
//      nHeight :       height of the destination rectangle into the DC
//      hbm :           the bitmap to draw (as a part or as a whole)
//      nXSrc :         x coordinates of the upper left corner of the source rectangle into the bitmap
//      nYSrc :         y coordinates of the upper left corner of the source rectangle into the bitmap
//
void CEnBitmap::DitherBlt(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HBITMAP hbm, int nXSrc, int nYSrc)
{
	ASSERT(hdcDest && hbm);
	ASSERT(nWidth > 0 && nHeight > 0);

	// Create a generic DC for all BitBlts
	HDC hDC = CreateCompatibleDC(hdcDest);
	ASSERT(hDC);

	if (hDC)
	{
		// Create a DC for the monochrome DIB section
		HDC bwDC = CreateCompatibleDC(hDC);
		ASSERT(bwDC);

		if (bwDC)
		{
			// Create the monochrome DIB section with a black and white palette
			struct {
				BITMAPINFOHEADER bmiHeader;
				RGBQUAD 		 bmiColors[2];
			} RGBBWBITMAPINFO = {

				{		// a BITMAPINFOHEADER
					sizeof(BITMAPINFOHEADER),	// biSize 
						nWidth, 				// biWidth; 
						nHeight,				// biHeight; 
						1,						// biPlanes; 
						1,						// biBitCount 
						BI_RGB, 				// biCompression; 
						0,						// biSizeImage; 
						0,						// biXPelsPerMeter; 
						0,						// biYPelsPerMeter; 
						0,						// biClrUsed; 
						0						// biClrImportant; 
				},

				{
					{ 0x00, 0x00, 0x00, 0x00 }, { 0xFF, 0xFF, 0xFF, 0x00 }
					}
			};
			VOID* pbitsBW;
			HBITMAP hbmBW = CreateDIBSection(bwDC,
				(LPBITMAPINFO)&RGBBWBITMAPINFO, DIB_RGB_COLORS, &pbitsBW, NULL, 0);
			ASSERT(hbmBW);

			if (hbmBW)
			{
				// Attach the monochrome DIB section and the bitmap to the DCs
				SelectObject(bwDC, hbmBW);
				SelectObject(hDC, hbm);

				// BitBlt the bitmap into the monochrome DIB section
				BitBlt(bwDC, 0, 0, nWidth, nHeight, hDC, nXSrc, nYSrc, SRCCOPY);

				// Paint the destination rectangle in gray
				FillRect(hdcDest, CRect(nXDest, nYDest, nXDest + nWidth, nYDest +
					nHeight), GetSysColorBrush(COLOR_3DFACE));

				// BitBlt the black bits in the monochrome bitmap into COLOR_3DHILIGHT bits in the destination DC
				// The magic ROP comes from the Charles Petzold's book
				HBRUSH hb = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
				HBRUSH oldBrush = (HBRUSH)SelectObject(hdcDest, hb);
				BitBlt(hdcDest, nXDest + 1, nYDest + 1, nWidth, nHeight, bwDC, 0, 0, 0xB8074A);

				// BitBlt the black bits in the monochrome bitmap into COLOR_3DSHADOW bits in the destination DC
				hb = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
				::DeleteObject(SelectObject(hdcDest, hb));
				BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, bwDC, 0, 0, 0xB8074A);
				::DeleteObject(SelectObject(hdcDest, oldBrush));
			}

			VERIFY(DeleteDC(bwDC));
		}

		VERIFY(DeleteDC(hDC));
	}
}

// CreateReservedPalette	- Create a palette using the PC_RESERVED flag
//				  Limit the colors to 236 colors
// Returns			- Handle to a palette object
// hDIB				- Handle to a device-independent bitmap
//
HPALETTE CEnBitmap::CreateReservedPalette(CDC* pDC)
{
	HPALETTE hPal = NULL;    // handle to a palette

	HBITMAP hBmp = (HBITMAP)this->GetSafeHandle();
	// get image properties
	//BITMAP bmp = { 0 };
	//::GetObject( hBmp, sizeof(BITMAP), &bmp );
	// allocate memory for extended image information
	BITMAPINFO& bmInfo = *(LPBITMAPINFO) new BYTE[sizeof(BITMAPINFO) + 8];
	memset(&bmInfo, 0, sizeof(BITMAPINFO) + 8);
	bmInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

	// get extended information about image (length, compression, length of color table if exist, ...)
	DWORD res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, GetHeight(), 0, &bmInfo, DIB_RGB_COLORS);
	// allocate memory for image data (colors)
	LPBYTE pBits = new BYTE[bmInfo.bmiHeader.biSizeImage + 4];

	res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, bmInfo.bmiHeader.biHeight, pBits, &bmInfo, DIB_RGB_COLORS);


	int nWidth = bmInfo.bmiHeader.biWidth;
	int nHeight = bmInfo.bmiHeader.biHeight;

	int nColors = bmInfo.bmiHeader.biClrUsed ? bmInfo.bmiHeader.biClrUsed :
		1 << bmInfo.bmiHeader.biBitCount;

	if (nColors > 256)
		return NULL;		// No Palette   


	//allocate memory block for logical palette
	UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * nColors);
	LOGPALETTE* pLP = (LOGPALETTE*) new BYTE[nSize];

	// Initialize the palette version
	pLP->palVersion = 0x300;

	// If it is a 256 color DIB, then let's find the most used 236 colors 
	// and make a palette out of those colors
	if (nColors > 236)
	{
		typedef struct _tagBESTCOLORS
		{
			DWORD dwColorCnt;	//Count of how many times a color is used
			BOOL  bDontUse;	//Should we use this color?
		} BESTCOLORS;

		BESTCOLORS bc[256];
		BYTE dwLeastUsed[20];		// Least used color indices
		LPSTR lpBits;			// pointer to D.I. bits of a DIB
		int   nWidth, nHeight, nBytesPerLine, cx, cy;

		::ZeroMemory(bc, 256 * sizeof(BESTCOLORS));

		lpBits = (LPSTR)(pBits + nColors);
		nWidth = bmInfo.bmiHeader.biWidth;
		nHeight = bmInfo.bmiHeader.biHeight;
		nBytesPerLine = ((((bmInfo.bmiHeader.biWidth *
			bmInfo.bmiHeader.biBitCount) + 31) & ~31) / 8);

		// Traverse through all of the bits in the bitmap and place the 
		// color count of each color in the BESTCOLORS array
		for (cy = 0; cy < nHeight; cy++)
			for (cx = 0; cx < nWidth; cx++)
				bc[*(LPBYTE)(lpBits + cy * nBytesPerLine + cx)].dwColorCnt++;

		// Let's arbitrarily place the first few colors in the "Least Used" list.
		int nReject = nColors - 236;
		for (cx = 0; cx < nReject; cx++)
		{
			bc[cx].bDontUse = TRUE;
			dwLeastUsed[cx] = cx;
		}

		// Now, let's traverse through all of the colors and 
		// sort out the least used
		for (cx = 0; cx < nColors; cx++)
		{
			cy = 0;
			while ((!(bc[cx].bDontUse)) && cy < nReject)
			{
				if (bc[cx].dwColorCnt < bc[dwLeastUsed[cy]].dwColorCnt)
				{
					bc[dwLeastUsed[cy]].bDontUse = FALSE;
					dwLeastUsed[cy] = cx;
					bc[cx].bDontUse = TRUE;
				}
				cy++;
			}
		}

		// We want only 236 colors, so that the 20 system colors 
		// are left untouched
		pLP->palNumEntries = 236;

		cx = 0;
		for (int i = 0; i < nColors; i++)
		{
			// Should we use this color?
			if (!((bc[i].bDontUse)))
			{
				pLP->palPalEntry[cx].peRed = bmInfo.bmiColors[i].rgbRed;
				pLP->palPalEntry[cx].peGreen =
					bmInfo.bmiColors[i].rgbGreen;
				pLP->palPalEntry[cx].peBlue = bmInfo.bmiColors[i].rgbBlue;
				pLP->palPalEntry[cx].peFlags = PC_RESERVED;
				cx++;
			}
		}

	}
	else if (nColors)
	{
		// We have enough room for all the colors

		pLP->palNumEntries = nColors;

		// Copy the colors
		for (int i = 0; i < nColors; i++)
		{
			pLP->palPalEntry[i].peRed = bmInfo.bmiColors[i].rgbRed;
			pLP->palPalEntry[i].peGreen = bmInfo.bmiColors[i].rgbGreen;
			pLP->palPalEntry[i].peBlue = bmInfo.bmiColors[i].rgbBlue;
			pLP->palPalEntry[i].peFlags = PC_RESERVED;
		}
	}


	hPal = CreatePalette(pLP);
	delete[] pLP;

	// return handle to DIB's palette 
	return hPal;
}

// FadeColorToGrayScale	- Draws a bitmap in color slowly turns it to grayscale
// pDC				- Pointer to target device context
// hDIB				- Handle of device-independent bitmap
// xDest			- x-coordinate of upper-left corner of dest. rect. 
// yDest			- y-coordinate of upper-left corner of dest. rect. 
// nLoops			- How many loops to fade the image into color
// nDelay			- Delay in milli-seconds between each loop
//
void CEnBitmap::FadeColorToGrayScale(CDC* pDC, int xDest, int yDest, int nLoops, int nDelay)
{
	CPalette pal;
	CPalette* pOldPalette;
	PALETTEENTRY peAnimate[256];
	PALETTEENTRY peGray[256];
	PALETTEENTRY peOriginal[256];

	HBITMAP hBmp = (HBITMAP)this->GetSafeHandle();
	// get image properties
	//BITMAP bmp = { 0 };
	//::GetObject( hBmp, sizeof(BITMAP), &bmp );
	// allocate memory for extended image information
	BITMAPINFO& bmInfo = *(LPBITMAPINFO) new BYTE[sizeof(BITMAPINFO) + 8];
	memset(&bmInfo, 0, sizeof(BITMAPINFO) + 8);
	bmInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

	// get extended information about image (length, compression, length of color table if exist, ...)
	DWORD res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, GetHeight(), 0, &bmInfo, DIB_RGB_COLORS);
	// allocate memory for image data (colors)
	LPBYTE pBits = new BYTE[bmInfo.bmiHeader.biSizeImage + 4];

	res = GetDIBits(pDC->GetSafeHdc(), hBmp, 0, bmInfo.bmiHeader.biHeight, pBits, &bmInfo, DIB_RGB_COLORS);

	int nColors = bmInfo.bmiHeader.biClrUsed ? bmInfo.bmiHeader.biClrUsed :
		1 << bmInfo.bmiHeader.biBitCount;

	int nWidth = bmInfo.bmiHeader.biWidth;
	int nHeight = bmInfo.bmiHeader.biHeight;

	// Compute the address of the bitmap bits
	LPVOID lpDIBBits;
	if (bmInfo.bmiHeader.biBitCount > 8)lpDIBBits = (LPVOID)((LPDWORD)(pBits + bmInfo.bmiHeader.biClrUsed) + ((bmInfo.bmiHeader.biCompression == BI_BITFIELDS) ? 3 : 0))
		;
	else
		lpDIBBits = (LPVOID)(pBits + nColors);

	int nReservedColors = nColors > 236 ? 236 : nColors;


	// Create the palette if needed
	if (pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE && nColors <= 256)
	{
		// The device supports a palette and bitmap has color table

		HPALETTE hPal = CreateReservedPalette(pDC);
		pal.Attach(hPal);

		// Now save the original colors and get the grayscale colors
		int i = 0;
		pal.GetPaletteEntries(0, nReservedColors, (LPPALETTEENTRY)&peOriginal);
		for (i = 0; i < nReservedColors; i++)
		{
			int nGray = Grey(peOriginal[i].peRed, peOriginal[i].peGreen, peOriginal[i].peBlue);

			peGray[i].peRed = nGray;
			peGray[i].peGreen = nGray;
			peGray[i].peBlue = nGray;
		}



		// Select the palette
		pOldPalette = pDC->SelectPalette(&pal, FALSE);
		pDC->RealizePalette();

		::SetDIBitsToDevice(pDC->m_hDC, xDest, yDest, nWidth, nHeight, 0, 0, 0, nHeight, lpDIBBits, (LPBITMAPINFO)&bmInfo, DIB_RGB_COLORS);

		// Now animate palette to set the image to grayscale
		for (i = 1; i <= nLoops; i++)
		{
			for (int j = 0; j < nColors; j++)
			{
				peAnimate[j].peRed = peOriginal[j].peRed - ((peOriginal[j].peRed - peGray[j].peRed) * i) / nLoops;
				peAnimate[j].peGreen = peOriginal[j].peGreen - ((peOriginal[j].peGreen - peGray[j].peGreen) * i) / nLoops;
				peAnimate[j].peBlue = peOriginal[j].peBlue - ((peOriginal[j].peBlue - peGray[j].peBlue) * i) / nLoops;

				peAnimate[j].peFlags = peOriginal[j].peFlags;
			}

			pal.AnimatePalette(0, nColors, (LPPALETTEENTRY)&peAnimate);

			// Delay...
			Sleep(nDelay);
		}

		// Select the old palette back
		pDC->SelectPalette(pOldPalette, FALSE);
	}
	else if ((pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE) == 0 && nColors <= 256)
	{
		// Now change the image to grayscale
		for (int i = 1; i <= nLoops; i++)
		{

			BYTE* dst = (BYTE*)lpDIBBits;
			int Size = nWidth * nHeight;

			while (Size--)
			{
				int nGrey = Grey(dst[2], dst[1], dst[0]);

				dst[2] = (BYTE)dst[2] - ((dst[2] - nGrey) * i) / nLoops;
				dst[1] = (BYTE)dst[1] - ((dst[1] - nGrey) * i) / nLoops;
				dst[0] = (BYTE)dst[0] - ((dst[0] - nGrey) * i) / nLoops;
				dst += 4;
			}

			// Draw the image again
			::SetDIBitsToDevice(pDC->m_hDC, xDest, yDest, nWidth, nHeight, 0, 0, 0, nHeight, lpDIBBits, (LPBITMAPINFO)&bmInfo, DIB_RGB_COLORS);

			// Delay...
			Sleep(nDelay);
		}
	}
	else
	{
		::SetDIBitsToDevice(pDC->m_hDC, xDest, yDest, nWidth, nHeight, 0, 0, 0, nHeight, lpDIBBits, (LPBITMAPINFO)&bmInfo, DIB_RGB_COLORS);
	}
}

void CEnBitmap::AlphaDisplay(CDC* pDC, BYTE bAlpha)
{
	CDC dc;
	dc.CreateCompatibleDC(pDC);
	CBitmap* bmp = dc.SelectObject(this);

	BLENDFUNCTION rBlendProps;
	rBlendProps.BlendOp = AC_SRC_OVER;
	rBlendProps.BlendFlags = 0;
	rBlendProps.AlphaFormat = 0;
	rBlendProps.SourceConstantAlpha = bAlpha;
	BITMAP bmInfo;
	::GetObject(m_hObject, sizeof(BITMAP), &bmInfo);
	INT nWidth, nHeigh;
	nWidth = bmInfo.bmWidth;
	nHeigh = bmInfo.bmHeight;

	AlphaBlend(pDC->m_hDC, 0, 0, nWidth, nHeigh, dc.m_hDC, 0, 0,
		nWidth, nHeigh, rBlendProps);
	dc.SelectObject(bmp);
}

/* ExtCreateRegion replacement */
HRGN CEnBitmap::CreateRegionExt(DWORD nCount, CONST RGNDATA* pRgnData)
{
	HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
	const DWORD RDHDR = sizeof(RGNDATAHEADER);
	ASSERT(hRgn != NULL);
	LPRECT pRects = (LPRECT)((LPBYTE)pRgnData + RDHDR);
	for (int i = 0;i < (int)nCount;i++)
	{
		HRGN hr = CreateRectRgn(pRects[i].left, pRects[i].top, pRects[i].right, pRects[i].bottom);
		VERIFY(CombineRgn(hRgn, hRgn, hr, RGN_OR) != ERROR);
		if (hr)
			::DeleteObject(hr);
	}
	ASSERT(hRgn != NULL);
	return hRgn;
}

///////////////////////////////////////////////////////////////////
// InflateRegion - Inflates a region by the x and y values
// specified in nXInflate and nYInflate
// Creates a new region that represents the inflated region
// (retains the contents of the old region)
// Returns NULL if unsuccessfull
HRGN CEnBitmap::InflateRegion(HRGN hRgn, int nXInflate, int nYInflate)
{
	// Local Variables
	LPRGNDATA lpData;	// The RGNDATA structure
	LPRECT lpRect;		// Pointer to the array of RECT structures
	DWORD BufSize;		// The amount of memory required
	DWORD i;			// General index variable
	HRGN hRgnNew;		// The newly created region

	// Get the number of rectangles in the region
	BufSize = GetRegionData(hRgn, 0, NULL);
	if (BufSize == 0)
		return NULL;
	// Allocate memory for the RGNDATA structure
	lpData = (LPRGNDATA)malloc(BufSize);
	// Set the location of the RECT structures
	lpRect = (LPRECT)(lpData->Buffer);
	// Get the region data
	if (!GetRegionData(hRgn, BufSize, lpData))
	{
		free(lpData);
		return NULL;
	}
	// Expand (or contract) all the rectangles in the data
	for (i = 0; i < lpData->rdh.nCount; i++)
		InflateRect(&lpRect[i], nXInflate, nYInflate);
	// Create the new region
	hRgnNew = CreateRegionExt(lpData->rdh.nCount, lpData);
	free((void*)lpData);
	return hRgnNew;
}

BOOL CEnBitmap::StretchDraw(CDC* pDC, LPRECT r, LPRECT sr)
{
	if (!r)
		return FALSE;
	CDC dc;
	dc.CreateCompatibleDC(pDC);
	CBitmap* bmp = dc.SelectObject(this);
	//pDC->SetStretchBltMode(COLORONCOLOR);

	if (!sr)
		pDC->StretchBlt(r->left, r->top, r->right, r->bottom, &dc, 0, 0, GetWidth(), GetHeight(), SRCCOPY);
	else
		pDC->StretchBlt(r->left, r->top, r->right - r->left, r->bottom - r->top, &dc, sr->left, sr->top, sr->right - sr->left, sr->bottom - sr->top, SRCCOPY);

	dc.SelectObject(bmp);

	return TRUE;
}

BOOL CEnBitmap::DrawImage(CEnBitmap& bmp, int nX, int nY, int nCol, int nRow)
{
	nX -= 1;
	nY -= 1;
	//单个图片的长和宽
	int w = GetWidth() / nCol;
	int h = GetHeight() / nRow;

	CBitmap* OldBmp;
	CDC memDC;
	CClientDC dc(0);

	memDC.CreateCompatibleDC(&dc);
	bmp.CreateCompatibleBitmap(&dc, w, h);
	OldBmp = memDC.SelectObject(&bmp);

	StretchDraw(&memDC, CRect(0, 0, w, h), CRect(GetWidth() * nX / nCol, GetHeight() * nY / nRow, GetWidth() * nX / nCol + w, GetHeight() * nY / nRow + h));

	memDC.SelectObject(OldBmp);
	return TRUE;
}

//BOLL GetBmp()

CRect CEnBitmap::GetRect()
{
	return CRect(0, 0, GetWidth(), GetHeight());
}

HBITMAP CEnBitmap::SetBitmap(HBITMAP hBitmap)
{
	CEnBitmap* pBmp = (CEnBitmap*)CEnBitmap::FromHandle(hBitmap);
	HBITMAP hBmp = (HBITMAP)this->Detach();
	this->DeleteObject();
	pBmp->DrawImage(*this, 1, 1, 1, 1);
	return hBmp;
}

BOOL CEnBitmap::ExtendDraw(CDC* pDC, CRect rc, int nX, int nY, BOOL bTran, UINT colorTransparent)
{
	CEnBitmap bmp;
	if (ExtendDrawImage(bmp, rc, nX, nY))
	{
#if 0
		CString strTime;
		strTime.Format(_T("%ld.bmp"), GetTickCount());
		CImageHelper::SaveBitmapToFile(bmp, strTime.GetString());
#endif
		if (bTran)
			bmp.TransparentBlt(*pDC, &rc, colorTransparent);
		else
			bmp.Draw(pDC, &rc);
		// 
		return TRUE;
	}
	return FALSE;
}

/************************************************************************/
/*  函数：ExtendDrawImage[8/23/2016 IT];
/*  描述：;
/*  参数：;
/*  	[OUT] bmp：返回图片对象;
/*  	[IN] rc：画图的目标区域;
/*  	[IN] nX：分割点x坐标;
/*  	[IN] nY：分割点y坐标;
/*  返回：BOOL;
/*  注意：;
/*  示例：;
/*  (0,0)-------|----------|
/*   |	        |	       |
/*   | 左上     | 右上     |
/*   |          |          |
/*   ----------(x,y)-------|----x,y分割点坐标;
/*   |          |          |
/*   | 左下     | 右下     |
/*   |          |          |
/*   -----------|---------(r,b)-
/*
/*  修改：;
/*  日期：;
/*  内容：;
/************************************************************************/
BOOL CEnBitmap::ExtendDrawImage(CEnBitmap& bmp, CRect rc, int nX, int nY)
{
	CBitmap* OldBmp;
	CDC memDC;
	CClientDC cdc(0);

	memDC.CreateCompatibleDC(&cdc);
	bmp.CreateCompatibleBitmap(&cdc, rc.Width(), rc.Height());
	OldBmp = memDC.SelectObject(&bmp);

	if (nX == 0 && nY == 0)
	{
		StretchDraw(&memDC, &rc, GetRect());
		return TRUE;
	}
	CDC dc;
	dc.CreateCompatibleDC(&memDC);
	CBitmap* Bmp = dc.SelectObject(this);
	//dc.SetStretchBltMode(COLORONCOLOR);
	if (nX != 0 && nY == 0)
	{
		//左上角
		memDC.BitBlt(0, 0, nX, rc.Height(), &dc, 0, 0, SRCCOPY);
		memDC.StretchBlt(nX, 0, rc.Width() - GetWidth(), rc.Height(), &dc, nX, 0, 1, GetHeight(), SRCCOPY);
		//右上角
		memDC.BitBlt(rc.right - (GetWidth() - nX), 0, GetWidth() - nX, rc.Height(), &dc, nX, 0, SRCCOPY);
	}
	else if (nX == 0 && nY != 0)
	{
		//上角
		memDC.BitBlt(0, 0, rc.Width(), nY, &dc, 0, 0, SRCCOPY);
		memDC.StretchBlt(0, nY, GetWidth(), rc.Height() - GetHeight(), &dc, 0, nY, GetWidth(), 1, SRCCOPY);
		//右上角
		memDC.BitBlt(0, rc.bottom - (GetHeight() - nY), GetWidth(), GetHeight() - nY, &dc, 0, nY, SRCCOPY);
	}
	else
	{
		//左上角
		memDC.StretchBlt(0, 0, nX, nY, &dc, 0, 0, nX, nY, SRCCOPY);
		//上中
		memDC.StretchBlt(nX, 0, rc.Width() - GetWidth(), nY, &dc, nX, 0, 1, nY, SRCCOPY);
		//右上角
		memDC.StretchBlt(rc.Width() - (GetWidth() - nX), 0, GetWidth() - nX, nY, &dc, nX, 0, GetWidth() - nX, nY, SRCCOPY);
		//左中
		memDC.StretchBlt(0, nY, nX, rc.Height() - GetHeight(), &dc, 0, nY, nX, 1, SRCCOPY);
		//正中
		memDC.StretchBlt(nX, nY, rc.Width() - GetWidth(), rc.Height() - GetHeight(), &dc, nX, nY, 1, 1, SRCCOPY);
		//右中
		memDC.StretchBlt(rc.Width() - (GetWidth() - nX), nY, GetWidth() - nX, rc.Height() - GetHeight(), &dc, nX, nY, GetWidth() - nX, 1, SRCCOPY);

		//左下角
		memDC.StretchBlt(0, rc.Height() - (GetHeight() - nY), nX, GetHeight() - nY, &dc, 0, nY, nX, GetHeight() - nY, SRCCOPY);
		//下中
		memDC.StretchBlt(nX, rc.Height() - (GetHeight() - nY), rc.Width() - GetWidth(), GetHeight() - nY, &dc, nX, nY, 1, GetHeight() - nY, SRCCOPY);
		//右下角
		memDC.StretchBlt(rc.Width() - (GetWidth() - nX), rc.Height() - (GetHeight() - nY), GetWidth() - nX, GetHeight() - nY, &dc, nX, nY, GetWidth() - nX, GetHeight() - nY, SRCCOPY);
	}
	dc.SelectObject(Bmp);
	memDC.SelectObject(OldBmp);

	return TRUE;
}