Ejemplo n.º 1
0
/********************************************************************************************
>	OpState	OpBaseConvertPathSegment::BaseGetState(INT32 PathType)

	Author:		Peter_Arnold (Xara Group Ltd) <*****@*****.**>
	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;
}
Ejemplo n.º 2
0
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;
}
Ejemplo n.º 3
0
/********************************************************************************************

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

	Author:		David_McClarnon (Xara Group Ltd) <*****@*****.**>
	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
	// have the same number of elements
	BOOL OneToOne = FALSE;
	if (pParam->GetOneToOne())
		OneToOne = (pBlendPathStart->GetNumElements() == pBlendPathEnd->GetNumElements());

	// Now actually blend the two paths

	GBlend GBlendObj;

	// Define the blend
	GBlendObj.Define(	(PPOINT)pPathStart->GetCoordArray(),	// Specify the start path
						pPathStart->GetVerbArray(),
						pPathStart->GetNumCoords(),

						(PPOINT)pPathEnd  ->GetCoordArray(),	// Specify the end path
						pPathEnd  ->GetVerbArray(),
						pPathEnd  ->GetNumCoords(),

						OneToOne,								// The one-to-one flag
						1024,								// Flatness

						pBuff,									// Buffer for GBlend to use
						DestPathSize*sizeof(UINT32));			// The buffer size

	// Blend the paths
	m_ArrayLength = GBlendObj.Blend(pParam->GetBlendRatio(),	// The blend ratio, 0.0 < BlendRatio < 1.0
									(PPOINT)pDestCoords,		// Array to store blended coords
									pDestVerbs,					// Array to store blended verbs
									DestPathSize);				// The num elements in the two arrays


	// If we're blending a line to another line, we need to make sure that the blended line
	// is going in a direction that corresponds to the source lines.  This ensures attributes
	// that depend on this direction (e.g. start and end arrows) look correct.
	//
	// When creating blend paths of lines, we can detect if the blend path has been reversed,
	// in relation to the original path, by the original mapping value.
	// If it's 0 it has NOT been reversed, otherwise it's been reversed.
	//
	// If the blend ratio is <=0.5, the blended path is closest to the start blend path,
	// so we look at the start blend path's original mapping.
	//
	// If blend ration > 0.5, look at the end blend path's original mapping.
	//
	// The (BlendRation <= 0.5) cut-off point is the same as the cut-off point used in the blending
	// of attributes.
	if (pBlendPathStart->IsLine() && pBlendPathEnd->IsLine())
	{
		BlendPath* pBlendPath;
		if (pParam->GetBlendRatio() <= 0.5) 
			pBlendPath = pBlendPathStart;
		else
			pBlendPath = pBlendPathEnd;

		if (pBlendPath->GetOrigMapping() != 0)
			NodeBlender::ReversePath(pDestCoords,pDestVerbs,m_ArrayLength);
	}

	// We need to do some work on the blended path
	if (!NodeBlender::ProcessBlendedPath(pDestCoords,pDestVerbs,pDestFlags,m_ArrayLength,Closed))
		return FALSE;

	Path RetnPath;
	RetnPath.Initialise(m_ArrayLength);

	BOOL Filled  = pPathStart->IsFilled  || pPathEnd->IsFilled;
	BOOL Stroked = pPathStart->IsStroked || pPathEnd->IsStroked;

	RetnPath.MergeTwoPaths(pDestCoords,pDestVerbs,pDestFlags,m_ArrayLength,Filled);

	pPath->ClearPath();
	pPath->CloneFrom(RetnPath);
	pPath->IsFilled = Filled;
	pPath->IsStroked = Stroked;
	
	return TRUE;
}