RangeList Class Reference

Holds a list of ranges. This is used to keep track when importing a file and preserving the layer information, and the import was initiated via drag and drop. When the import has finished, the bounding box of all the nodes on all the ranges is found, and then the all the nodes in all the ranges are centred on the drop point. More...

#include <epsfiltr.h>

Inheritance diagram for RangeList:

List of all members.

Public Member Functions
BOOL	AddRange (Node *pFirst, Node *pLast)
	Adds another range to the range list. All nodes from pFirst to pLast are inclusively added to the range.
DocRect	GetBoundingRect ()
	Goes through all nodes in all the ranges in this RangeList, and unions all the bounding boxes together. It uses the simple algorithm, which does not take account of the attributes applied to the nodes - i.e. it only gives an approximation (hence this function can result in bounding boxes being in the tree which are not entirely accurate).
void	Transform (TransformBase &)
	Transforms all the nodes in all the ranges of this range list using the transform object given.
Private Member Functions
	CC_DECLARE_MEMDUMP (RangeList)

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Detailed Description

Holds a list of ranges. This is used to keep track when importing a file and preserving the layer information, and the import was initiated via drag and drop. When the import has finished, the bounding box of all the nodes on all the ranges is found, and then the all the nodes in all the ranges are centred on the drop point.

Author:

Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>

Date:

28/09/94

See also:

OpDroppedFiles

Definition at line 302 of file epsfiltr.h.

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Member Function Documentation

BOOL RangeList::AddRange (  Node *  pFirst, Node *  pLast )

Adds another range to the range list. All nodes from pFirst to pLast are inclusively added to the range. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 28/09/94 Parameters: pFirst,pLast  - the first and last nodes in the range. [INPUTS] Returns: TRUE if the range was added ok; FALSE if not. See also: Range Definition at line 249 of file epsfiltr.cpp. { // Get a new range RangeListItem *pItem = new RangeListItem(pFirst, pLast); if (pItem == NULL) // Out of memory return FALSE; // Add it to the list and return success AddTail(pItem); return TRUE; }

RangeList::CC_DECLARE_MEMDUMP (  RangeList   )  [private]

DocRect RangeList::GetBoundingRect (   )

Goes through all nodes in all the ranges in this RangeList, and unions all the bounding boxes together. It uses the simple algorithm, which does not take account of the attributes applied to the nodes - i.e. it only gives an approximation (hence this function can result in bounding boxes being in the tree which are not entirely accurate). Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 29/09/94 Returns: The union of the bounding boxes of all nodes in this range list. See also: RangeList Definition at line 278 of file epsfiltr.cpp. { // Start off with empty rectangle DocRect RangeBBox; // Do each range in turn RangeListItem *pItem = (RangeListItem *) GetHead(); while (pItem != NULL) { // Do each node in turn if(pItem->IsLayer) { // layer based calcuations // see long note below RangeBBox = RangeBBox.Union(pItem->TheLayer->GetBoundingRect(TRUE)); } else { // range based calculations Node *pNode = pItem->TheRange.FindFirst(); while (pNode != NULL) { // Does this node have a bounding rectangle? if (pNode->IsBounded()) { // Yes - add it to our union NodeRenderableBounded *pNodeBounded = (NodeRenderableBounded *) pNode; // Pass in TRUE so that we don't do a 'proper' attribute scan for the // bounding box - we only need an approximate bounding rectangle // for centering it anyway. // NB. this results in inaccurate bounding boxes in the tree, but when // we call this we're about to transform them anyway, so they'll // be updated correctly afterwards. RangeBBox = RangeBBox.Union(pNodeBounded->GetBoundingRect(TRUE)); } else { ENSURE(FALSE, "Found a non-renderable node in the import range"); } // Try the next node. pNode = pItem->TheRange.FindNext(pNode); } } // Try the next range pItem = (RangeListItem *) GetNext(pItem); } // Return the accumulated bounds return RangeBBox; }

void RangeList::Transform (  TransformBase &  Trans  )

Transforms all the nodes in all the ranges of this range list using the transform object given. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 29/09/94 Parameters: Trans  - the transform object to transform all the nodes by. [INPUTS] See also: Range::Transform; TransformBase Definition at line 348 of file epsfiltr.cpp. { // Do each range in turn RangeListItem *pItem = (RangeListItem *) GetHead(); while (pItem != NULL) { if(pItem->IsLayer) { pItem->TheLayer->Transform(Trans); } else { // Transform all nodes in this range Node *pNode = pItem->TheRange.FindFirst(); while (pNode != NULL) { // Is this node renderable? if (pNode->IS_KIND_OF(NodeRenderable)) { // Yes - transform it. NodeRenderable *pNodeRenderable = (NodeRenderable *) pNode; pNodeRenderable->Transform(Trans); } else { ENSURE(FALSE, "Found a non-renderable node in the import range"); } // Try the next node. pNode = pItem->TheRange.FindNext(pNode); } } // Try the next range pItem = (RangeListItem *) GetNext(pItem); } }

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The documentation for this class was generated from the following files:

• Kernel/epsfiltr.h (r1785/r1302)
• Kernel/epsfiltr.cpp (r1785/r1668)

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