C++ Path::GetNumCoords方法代码示例

DocRect ArrowRec::FindBoundsAt(const DocCoord& ArrowCentre, const DocCoord& Direction, 
							   INT32 ParentLineWidth)
{
	DocRect Bounds(0,0,0,0);

	// Find a matrix to transform the ArrowHead to this Position.
	Trans2DMatrix Trans;
	GetArrowMatrix(ArrowCentre, Direction, ParentLineWidth, &Trans);

	// Note:
	// We should really be able to ask Gavin to Calculate the Bounds,
	// and pass him this Transform Matrix, but he can't do this at the
	// moment, so we'll have to actually transform the path into
	// a tempory path, and then ask him to calc the bounds of that.

	// Make a tempory path to transform
	Path* TransPath = new Path();
	if (TransPath == NULL)
		return Bounds;

	// Copy the path data from the ArrorHead into our tempory path.
	BOOL 	ok = TransPath->Initialise(ArrowShape->GetNumCoords());
	if (ok) ok = TransPath->CopyPathDataFrom(ArrowShape);

	if (!ok)
	{
		// Tidy up if we failed
		delete TransPath;
		return Bounds;
	}

	// Go transform the Tempory path
	Trans.Transform(TransPath->GetCoordArray(), 
					TransPath->GetNumCoords() );

	BOOL GDrawResult = FALSE;
	
	// Find out what the paths bounding rect is, taking into account
	// any bezier curve thingies. 

	GDrawContext *GD = GRenderRegion::GetStaticDrawContext();
	
	if (GD != NULL)
		GDrawResult = GD->CalcStrokeBBox((POINT*)TransPath->GetCoordArray(),
											TransPath->GetVerbArray(), TransPath->GetNumCoords(),
											(RECT *)(&Bounds),
											TRUE, 0, CAPS_ROUND, JOIN_ROUND, NULL) == 0;

	// If Gavin failed, then use backup technique of getting coord array bounds
	if (!GDrawResult)
		Bounds = TransPath->GetBoundingRect();

	// Delete the temporary transformed path
	delete TransPath;

	return Bounds;
}

/********************************************************************************************
>	OpState	OpBaseConvertPathSegment::BaseGetState(INT32 PathType)

	Author:		Peter_Arnold (Xara Group Ltd) <[email protected]>
	Created:	16/8/95
	Inputs:		Type of the path that ends a segment
	Returns:	The tick/grey state of OpBaseConvertPathSegment and derived classes
	Purpose:	For finding the state of this op
	SeeAlso:	OpState
********************************************************************************************/
OpState	OpBaseConvertPathSegment::BaseGetState(INT32 PathType)
{
	OpState OpSt;

#ifndef STANDALONE

 	SelRange*	Selected = GetApplication()->FindSelection();

	if ((Document::GetSelected() == NULL) || (Selected == NULL) )
	{	// There is no selected document or selrange is invalid
		OpSt.Greyed = TRUE;
	   	return OpSt;                                 
	}

	Node*	pNode = Selected->FindFirst();
	BOOL	FoundSegment = FALSE;
	BOOL	AllConverted = TRUE;
	BOOL	PrevSelected = FALSE;

	while ((pNode != NULL) && AllConverted)
	{
		if (pNode->IsNodePath() && ((NodePath*)pNode)->IsPathAllowable())
		{
			Path* ThisPath = &(((NodePath*)pNode)->InkPath);
			PathFlags* Flags = ThisPath->GetFlagArray();
			PathVerb* Verbs = ThisPath->GetVerbArray();
			INT32 UsedSlots = ThisPath->GetNumCoords();
			PrevSelected = FALSE;

			for (INT32 i=0; i<UsedSlots; i++)
			{
				if (Flags[i].IsEndPoint)
				{
					if (Flags[i].IsSelected)
					{
						if (PrevSelected && ((Verbs[i] & ~PT_CLOSEFIGURE) != PT_MOVETO) )
						{
							FoundSegment = TRUE;
							if ((Verbs[i] & ~PT_CLOSEFIGURE) != PathType)
								AllConverted = FALSE;
						}
						PrevSelected = TRUE;
					}
					else							
					{
						PrevSelected = FALSE;
					}
				}
			}
		}
		pNode = Selected->FindNext(pNode);
	}

	OpSt.Greyed = !FoundSegment;
	OpSt.Ticked = AllConverted && FoundSegment;

#endif	// #ifdef STANDALONE

	return OpSt;
}

void ImagemapRenderRegion::AddPathToImagemap(Path* ppthToAdd, WebAddressAttribute* pwaaCurrent)
{
	//First get the origin of the export area and the DPI
	DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea);
	double dDPI=m_Options.m_dDPI;

	//Now, how many subpaths are there in this path?
	INT32 lNumSubpaths=ppthToAdd->GetNumSubpaths();

	//For each subpath in the path
	for (INT32 l=0; l<lNumSubpaths; l++)
	{
		//Create a new path
		Path pthSubpath;

		pthSubpath.Initialise(ppthToAdd->GetNumCoords());

		//And copy the next subpath into it
		ppthToAdd->MakePathFromSubPath(l, &pthSubpath);

		//Now, if that subpath is closed
		if (pthSubpath.IsSubPathClosed(0))
		{
			//Then we want to add it to the imagemap

			//So scale it to dDPI and by dcOrigin
			pthSubpath.Scale(dcOrigin, dDPI);
	
			//Now we need to flatten it.
			//This means creating a new path, because otherwise Path::Flatten
			//goes wrong

			Path pthFlattened;

			pthFlattened.Initialise(pthSubpath.GetNumCoords());

			//So, if we should flatten the path
			if (m_Options.m_ffApprox!=FF_NOTATALL)
				//Then do it
				pthSubpath.Flatten(m_Options.m_ffApprox, &pthFlattened);
			else
				//Otherwise, simply copy the path across
				pthFlattened.CopyPathDataFrom(&pthSubpath);

			//Then add the flattened path to the imagemap
			m_Imagemap.AddPolygon(&pthFlattened, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame);
		}
	}
			
	
}

//.........这里部分代码省略.........
            ok = GetTextExtentPoint(ScreenDC, *text, (pCurrentChar-(TCHAR*)(*text)), &StringSize);
            ERROR3IF(!ok, "GetTextExtentPoint32() failed");
            if (!ok) break;

            // Get the characters path
            DWORD PathSize = 0;
            ok = TextManager::GetBezierFromChar(&SysDisplay, wchr, pLogFont, &PathSize, (POINT *)NULL, (BYTE *)NULL);
            if (!ok)
            {
                wchr = FontDefaultCharacter;
                ok = TextManager::GetBezierFromChar(&SysDisplay, wchr, pLogFont, &PathSize, (POINT *)NULL, (BYTE *)NULL);
            }
            ERROR3IF(!ok, "GetBezierFromChar returned false");
            if (!ok) break;

            // Pointer to an array of path coordinates
            if(pPolyCordBuffer == NULL)
            {
                TRY
                {
                    pPolyCordBuffer = new DocCoord[PathSize];
                }
                CATCH (CMemoryException, e)
                {
                    pPolyCordBuffer = NULL;
                    /*ERROR(_R(IDS_OUT_OF_MEMORY), FALSE);*/
                }
                END_CATCH
            }

            // Pointer to an array of path verbs
            if(pPolyVerbBuffer == NULL)
            {
                TRY
                {
                    pPolyVerbBuffer = new PathVerb[PathSize];
                }
                CATCH (CMemoryException, e)
                {
                    pPolyVerbBuffer = NULL;
                    /*ERROR(_R(IDS_OUT_OF_MEMORY), FALSE);*/
                }
                END_CATCH
            }

            if (pPolyCordBuffer == NULL || pPolyVerbBuffer == NULL)
            {
                ok = FALSE;
                break;
            }

            CurrentPathSizeAlloc = PathSize;

            // Fill up the buffers until they're bursting with fontyness
            ok = TextManager::GetBezierFromChar(&SysDisplay, wchr, pLogFont, &PathSize, (POINT *)pPolyCordBuffer,
                                                (BYTE *)pPolyVerbBuffer);
            if(!ok) TRACEUSER( "Richard", _T("GetBezierFromChar returned false in second phase...\n"));
            if(!ok)	break;

            // Spaces set PathSize to zero
            if((PathSize > 0)/* && (pPath != NULL)*/)
            {
                pPath = new Path();
                pPath->Initialise(PathSize, 12);
                pPath->CopyPathDataFrom(pPolyCordBuffer, pPolyVerbBuffer, PathSize, TRUE);

                // Major bodge at present with the x spacing...
                Matrix scale(XScale, 0, 0, YScale, (INT32)((XScale*StringSize.cx*72000)/(double)DPI), (INT32)YShift);

                pTransform = new Trans2DMatrix(scale);
                pPathCoords = pPath->GetCoordArray();
                pTransform->Transform( pPathCoords, pPath->GetNumCoords() );
                delete pTransform;

                pPath->InitialiseFlags();

                ok = ALU->GradFillPath(pPath, ForeColour, ForeColour, 0, 0, 0,/*Xsize/2,*/ Ysize, S2BMP_ANTIALIAS);
                ERROR3IF(!ok, "Gradfillpath returned false");
                if(!ok)	break;

                delete pPath;
            }

            // S2BMP_MAGIC is the worderfully fabby constant that mark's getbezierfromchar returns
            // Theory goes that he's going to sort this out sometime...
            if(CurrentPathSizeAlloc != S2BMP_MAGIC)
            {
                delete []pPolyCordBuffer;
                delete []pPolyVerbBuffer;

                pPolyCordBuffer = NULL;
                pPolyVerbBuffer = NULL;
                CurrentPathSizeAlloc = 0;
            }

            pPath = NULL;
            pTransform = NULL;

            pCurrentChar = camStrinc(pCurrentChar);
        }

//.........这里部分代码省略.........
						delete pChildPath;
						goto FailAndDeleteList;
					}

					/*	Karim 05/12/2000
						No longer required - see code addition at the bottom of this loop.

					if (split==1) 
			    	{
						delete pChildPath;
			    		continue;
					}

					*/

					if (split>1)
					{

						// update the split paths bounding rectangle
						pSplitNode->InvalidateBoundingRect();

						// Create a new nodepath.
						NodePath* pChildNode;
						ALLOC_WITH_FAIL(pChildNode, new NodePath(), this);
						if (!pChildNode)
						{
							delete pChildPath;
							goto DeleteList;
						}

						// make room for the new path in the node path.
						CALL_WITH_FAIL
						(
							pChildNode->SetUpPath(pChildPath->GetNumCoords(),12),
							this,ok
						);
				
						if (!ok)
						{
							delete pChildNode;
							delete pChildPath;
							goto DeleteList;
						}

						// now copy the path data in there.
						pChildNode->InkPath.CopyPathDataFrom(pChildPath);
						delete pChildPath;

						// Clear the selection flag from the first element in both the split
						// and child paths.  All others apart from the last will be	unselected
						// by definition.  Also select the last element in the child
						(pSplitNode->InkPath.GetFlagArray())[0].IsSelected = FALSE;
						(pChildNode->InkPath.GetFlagArray())[0].IsSelected = FALSE;
						(pChildNode->InkPath.GetFlagArray())[(pChildNode->InkPath.GetNumCoords()-1)].IsSelected = TRUE;
						pChildNode->InkPath.IsFilled = FALSE;

						// now, copy all attributes from the parent split to the child split
						Node* pAttr = pSplitNode->FindFirstChild();
						while (pAttr != NULL)
						{
							if (pAttr->IsKindOf(CC_RUNTIME_CLASS(NodeAttribute)))
							{
								Node* pAttrCopy;
								CALL_WITH_FAIL(pAttr->NodeCopy(&pAttrCopy), this,ok);
								if (!ok) 
								{

/********************************************************************************************

>	BOOL BlendHelpers::BlendPaths(BlendNodeParam * pParam, Path * pPath)

	Author:		David_McClarnon (Xara Group Ltd) <[email protected]>
	Created:	21/2/2000
	Inputs:		The blend node parameter
	Outputs:	The blended path is stored in three arrays: the coords, the verbs, and the flags.
				The arrays are:
	
					pTempCoords
					pTempVerbs
					pTempFlags

					ArrayLength = the length of all three arrays

				This allows the caller to decide what to do with the blended path in a very flexible way.

	Returns:	TRUE if successful, FALSE otherwise
	Purpose:	Blends two BlendPath objects by the amount specified in BlendRatio
	SeeAlso:	-
********************************************************************************************/
BOOL BlendHelpers::BlendPaths(BlendNodeParam * pParam, Path * pPath)
{
	// Check entry params
	BlendPath * pBlendPathStart = pParam->GetStartBlendPath();
	BlendPath * pBlendPathEnd   = pParam->GetEndBlendPath();

	ERROR2IF(!pBlendPathStart->GetBlendNode()->IsNodePath(), FALSE,
		"Start blend path's node isn't a node path");

	ERROR2IF(!pBlendPathEnd->GetBlendNode()->IsNodePath(), FALSE,
		"End blend path's node isn't a node path");

	BOOL    ok = (pBlendPathStart != NULL && pBlendPathEnd != NULL);
 	if (ok) ok = (pBlendPathStart->GetBlendNode() != NULL && pBlendPathEnd->GetBlendNode() != NULL);
	ERROR3IF(!ok,"One or more NULL entry params");
	if (!ok) return FALSE;

	// Get the types of the two paths
	PathTypeEnum PathTypeStart = pBlendPathStart->GetPathType();
	PathTypeEnum PathTypeEnd   = pBlendPathEnd  ->GetPathType();
	
	// The blended path will be closed if either of the paths is a shape
	BOOL Closed = (PathTypeStart == PATHTYPE_SHAPE) || (PathTypeEnd == PATHTYPE_SHAPE);

	Path * pPathStart = NULL;

	// Find the paths associated with the start and end blend paths
	if (pBlendPathStart->GetBlendNode()->IsNodePath())
	{
		pPathStart = &(((NodePath *)pBlendPathStart->GetBlendNode())->InkPath);
	}

	Path * pPathEnd = NULL;

	if (pBlendPathEnd->GetBlendNode()->IsNodePath())
	{
		pPathEnd   = &(((NodePath *)pBlendPathEnd->GetBlendNode())->InkPath);
	}

	// Calculate how large the arrays have to be to store the blended path definition
	INT32 DestPathSize = ((pPathStart->GetNumCoords()+pPathEnd->GetNumCoords())*3)+500;

	// Get some arrays used to hold the blended path data, and error if any are NULL
	DocCoord*  	pDestCoords = GetCoordArray(DestPathSize);
	PathVerb*  	pDestVerbs  = GetVerbArray(DestPathSize);
	PathFlags* 	pDestFlags  = GetFlagArray(DestPathSize);
	UINT32* 		pBuff 		= GetGBlendBuff(DestPathSize);
	if (pDestCoords == NULL || pDestVerbs == NULL || pDestFlags == NULL || pBuff == NULL)
		return FALSE;

	// This section copes with the case when blending a line with a shape.
	// In this case we need to get a temp path the is actually a shape version of the line.
	// The line is simply reversed back onto itself to form a shape that would look identical to the 
	// line if rendered.  This allows the line to appear to open up to the shape when blended.
	Path Shape;
	if (PathTypeStart != PathTypeEnd)
	{
		BOOL ok = FALSE;
		if (!Shape.Initialise()) return FALSE;

		// if going from a line to a shape, convert the start path to a shape
		if (PathTypeStart == PATHTYPE_LINE && PathTypeEnd == PATHTYPE_SHAPE)
		{
			ok = NodeBlender::ConvertLineToShape(pPathStart,&Shape);
			pPathStart = &Shape;
		}

		// if going from a shape to a line, convert the end path to a shape
		if (PathTypeStart == PATHTYPE_SHAPE && PathTypeEnd == PATHTYPE_LINE)
		{
			ok = NodeBlender::ConvertLineToShape(pPathEnd,&Shape);
			pPathEnd = &Shape;
		}

		if (!ok) return FALSE;
	}

	// The blend should do a one-to-one mapping when the OneToOne flag is set AND both paths
//.........这里部分代码省略.........