Exemplo n.º 1
0
bool CxImageIG::EncodeLayer (const wchar_t *pcwFilePath, int nLayerIdx, int nLayerPos, RECT *p_rcSubLayer, int nSubLayerOwnerId)
{
	CxIOFile file;
	if (!file.Open (pcwFilePath, L"r+b"))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "file.Open failed");
	// read current header
	IGHEADER igHeader;	
	if (!decodeHeader (&file, &igHeader))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "decodeHeader failed");

	IGSECTIONHEADER_LAYER *pLayerSections = new IGSECTIONHEADER_LAYER[CXIMAGEIG_MAX_NBLAYERS];
	IGSECTIONHEADER_SELECTION *pSelectionSections = new IGSECTIONHEADER_SELECTION[CXIMAGEIG_MAX_NBSELECTIONS];
	if (!decodeSections (&file, &igHeader, &pLayerSections[0], &pSelectionSections[0]))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "decodeSections failed");

	IGLibrary::IGLayer *pLayer = GetLayer (nLayerPos);
	if (!pLayer)
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "GetLayer failed");
	_ASSERTE ((int)pLayer->GetId() == nLayerIdx && "CxImageIG::EncodeLayer FAILED");
	bool bIsSubLayerOwner = false;
	int nLayerSectionIndex = findLayerSectionIndex (&igHeader, pLayerSections, nLayerIdx, bIsSubLayerOwner);
	if (nLayerSectionIndex < 0)
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "findLayerSectionIndex failed");
	if ((nLayerSectionIndex > igHeader.nNbLayers) || (nLayerSectionIndex >= CXIMAGEIG_MAX_NBLAYERS))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "findLayerSectionIndex failed");
	CxImage cxSubLayer;
	CxImage *pEncodingLayer = pLayer;
	int nSubLayerWidth = 0;
	int nSubLayerHeight = 0;
	if (p_rcSubLayer)
	{
		// Encode sub-layer
		nSubLayerWidth = p_rcSubLayer->right - p_rcSubLayer->left + 1;
		nSubLayerHeight = p_rcSubLayer->bottom - p_rcSubLayer->top + 1;
		cxSubLayer.Create (nSubLayerWidth, nSubLayerHeight, 24);
		cxSubLayer.AlphaCreate (255);
		BYTE *pLayerBits = NULL;
		BYTE *pSubLayerBits = NULL;
		for (int i = 0; i < nSubLayerHeight; i++)
		{
			pSubLayerBits = cxSubLayer.GetBits (i);
			pLayerBits = pLayer->GetBits (p_rcSubLayer->top + i) + 3 * p_rcSubLayer->left;
			::memcpy (pSubLayerBits, pLayerBits, nSubLayerWidth * 3);
		}
		BYTE *pLayerAlpha = NULL;
		BYTE *pSubLayerAlpha = NULL;
		for (int i = 0; i < nSubLayerHeight; i++)
		{
			pLayerAlpha = pLayer->AlphaGetPointer (p_rcSubLayer->left, p_rcSubLayer->top + i);
			pSubLayerAlpha = cxSubLayer.AlphaGetPointer (0, i);		
			::memcpy (pSubLayerAlpha, pLayerAlpha, nSubLayerWidth);
		}
		pEncodingLayer = &cxSubLayer;
		int nSubLayerSectionIndex = findLayerSectionIndex (&igHeader, pLayerSections, nSubLayerOwnerId, bIsSubLayerOwner);
		if (nSubLayerSectionIndex < 0)
			throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "findLayerSectionIndex failed");
		pLayerSections [nSubLayerSectionIndex].pnSubLayers [pLayerSections [nSubLayerSectionIndex].nSubLayers++] = nLayerSectionIndex;
	}
	ProgressSetRange (pLayer->GetHeight(), 0);
	ProgressSetMessage (L"Encoding layer...");	
	// fill layer offset and size
	pLayerSections [nLayerSectionIndex].nSubLayers = 0;
	pLayerSections [nLayerSectionIndex].ptOffset.x = p_rcSubLayer ? p_rcSubLayer->left : pLayer->info.xOffset;
	pLayerSections [nLayerSectionIndex].ptOffset.y = p_rcSubLayer ? p_rcSubLayer->top : pLayer->info.yOffset;
	pLayerSections [nLayerSectionIndex].ptSize.x = p_rcSubLayer ? p_rcSubLayer->right - p_rcSubLayer->left + 1 : pLayer->GetWidth();
	pLayerSections [nLayerSectionIndex].ptSize.y = p_rcSubLayer ? p_rcSubLayer->bottom - p_rcSubLayer->top + 1 : pLayer->GetHeight();
	if (nLayerSectionIndex == igHeader.nNbLayers)
		pLayerSections [nLayerSectionIndex].commonHeader.nSectionId = (BYTE)igHeader.nNbSections;
	pLayerSections [nLayerSectionIndex].commonHeader.nId = nLayerIdx;
	pLayerSections [nLayerSectionIndex].commonHeader.eSectionType = IGSECTION_LAYER;
	// set byte offset
	if (igHeader.nNbSections == 0)
		pLayerSections [nLayerSectionIndex].commonHeader.nFirstByteOffset = sizeof (IGHEADER) + sizeof (IGSECTIONHEADER_LAYER) * CXIMAGEIG_MAX_NBLAYERS + sizeof (IGSECTIONHEADER_SELECTION) * CXIMAGEIG_MAX_NBSELECTIONS;
	else
		pLayerSections [nLayerSectionIndex].commonHeader.nFirstByteOffset = findSectionFirstByteOffset (&igHeader, pLayerSections, pSelectionSections, pLayerSections [nLayerSectionIndex].commonHeader.nSectionId);

	igHeader.nNbLayers = nLayerSectionIndex + 1;
	if (igHeader.nNbSelections == 0)
	{
		igHeader.nNbSections = pLayerSections [nLayerSectionIndex].commonHeader.nSectionId + 1;
		igHeader.nNbSelections = igHeader.nNbSections - igHeader.nNbLayers;
	}
	else
	{
		if (pSelectionSections [igHeader.nNbSelections - 1].commonHeader.nSectionId == pLayerSections [nLayerSectionIndex].commonHeader.nSectionId + 1)
			igHeader.nNbSections = igHeader.nNbSelections + igHeader.nNbLayers;
		else
		{
			igHeader.nNbSections = pLayerSections [nLayerSectionIndex].commonHeader.nSectionId + 1;
			igHeader.nNbSelections = igHeader.nNbSections - igHeader.nNbLayers;
		}
	}

	// write layer pixels
	if (!file.Seek (pLayerSections [nLayerSectionIndex].commonHeader.nFirstByteOffset, SEEK_SET))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "file.Seek failed");

	// set max JPEG quality
	float fCurQuality = pEncodingLayer->GetJpegQualityF();
	pEncodingLayer->SetJpegQualityF (100.0f);
	// JPEG encoding
	BYTE *pBuf = new BYTE [CXIMAGEIG_INIT_LAYERSIZE];
	CxMemFile memFile (pBuf, CXIMAGEIG_INIT_LAYERSIZE);
	if (!pEncodingLayer->Encode (&memFile, CXIMAGEIG_LAYERFORMAT))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "pEncodingLayer->Encode failed");
	BYTE *pBufImg = memFile.GetBuffer();
	long nSizeBufImg = memFile.Tell();
	// reset JPEG quality
	pEncodingLayer->SetJpegQualityF (fCurQuality);
	file.Write (pBufImg, nSizeBufImg, 1);
	delete [] pBufImg;
	pLayerSections [nLayerSectionIndex].commonHeader.nSizeBuf = nSizeBufImg;
	// write layer alpha
	if (!pEncodingLayer->pAlpha)
		pEncodingLayer->AlphaCreate(255);
	int nNbPixels = pEncodingLayer->GetWidth() * pEncodingLayer->GetHeight();
	file.Write (pEncodingLayer->pAlpha, nNbPixels, 1);
	pLayerSections [nLayerSectionIndex].commonHeader.nEndByteOffset = pLayerSections [nLayerSectionIndex].commonHeader.nFirstByteOffset + nSizeBufImg + nNbPixels;

	// write new headers
	if (!encodeHeader (&file, &igHeader))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "encodeHeader failed");
	if (!encodeSections (&file, &igHeader, pLayerSections, pSelectionSections))
		throw IGEXCEPTION (CxImageIGException, "EncodeLayer", "encodeSections failed");
	delete [] pLayerSections;
	delete [] pSelectionSections;
	return true;
}
Exemplo n.º 2
0
//////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers
void CMainFrame::OnEditPaste() 
{
	CDemoDoc *NewDoc=(CDemoDoc*)((CDemoApp*)AfxGetApp())->demoTemplate->OpenDocumentFile(NULL); 

	if (NewDoc)
	{
		if (OpenClipboard())
		{
			HANDLE hData=NULL;
			
			if (hData = GetClipboardData(((CDemoApp*)AfxGetApp())->GetCF())){ //custom CxImage object
				CxImage *newima = new CxImage();
				DWORD dwSize = GlobalSize(hData);
				if (dwSize) {
					BYTE *lpVoid = (BYTE *)GlobalLock(hData);
					newima->UnDump(lpVoid);
					GlobalUnlock(lpVoid);
				}
				NewDoc->image = newima;
			} else if (hData = GetClipboardData(CF_DIB)){ // check if bitmap
				CxImage *newima = new CxImage();
				newima->CreateFromHANDLE(hData);
				NewDoc->image = newima;
			} else  {		
#if CXIMAGE_SUPPORT_WMF
				if (hData = GetClipboardData(CF_ENHMETAFILE)) //check if metafile
				{
					HENHMETAFILE hMeta = (HENHMETAFILE)hData;
					ENHMETAHEADER emh;
					GetEnhMetaFileHeader(hMeta, sizeof(emh), &emh); 

					int	cx,cy;
					cx = (int)((emh.rclBounds.right - emh.rclBounds.left)/2.54);
					cy = (int)((emh.rclBounds.bottom - emh.rclBounds.top)/2.54);

					HDC hDC0 = ::GetDC(0); // screen dc
					HBITMAP hBitmap = CreateCompatibleBitmap(hDC0, cx, cy);
					HDC	hDC = CreateCompatibleDC(hDC0);	// memory dc compatible with screen
					::ReleaseDC(0, hDC0);	// don't need anymore. get rid of it.

					if (hDC && hBitmap){

						RECT rc = {0,0,cx,cy};
						int bpp = ::GetDeviceCaps(hDC, BITSPIXEL);

						HBITMAP hBitmapOld = (HBITMAP)SelectObject(hDC, hBitmap);

						// paint the background
						DWORD	dwBack = RGB(255, 255, 255); //GetSysColor(COLOR_WINDOW);
						DWORD OldColor = SetBkColor(hDC, dwBack);
						ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &rc, NULL, 0, NULL);
						SetBkColor(hDC, OldColor);

						// Play the Metafile into Memory DC
						BOOL bRet = PlayEnhMetaFile(hDC, hMeta,	&rc);

						SelectObject(hDC, hBitmapOld);

						CxImage *newima = new CxImage();
						if(bRet && newima->Create(cx, cy, bpp, CXIMAGE_FORMAT_WMF)){
							
							bRet = GetDIBits(hDC, hBitmap, 0,	(UINT)cy, newima->GetBits(),
								             (LPBITMAPINFO)newima->GetDIB(), DIB_RGB_COLORS);

							NewDoc->image = newima;
						}
						else
						{
							delete newima;
						}
					}
					if (hBitmap) DeleteObject(hBitmap);
					if (hDC) DeleteDC(hDC);
				}
#endif
			}
		}

		CloseClipboard();

		CString s;
		s.Format(_T("Clipboard Image %d"),((CDemoApp*)AfxGetApp())->m_nDocCount++);
		NewDoc->SetTitle(s);
		NewDoc->UpdateAllViews(0,WM_USER_NEWIMAGE);
		NewDoc->UpdateStatusBar();
	}
}