// $Id: nodeset.cpp 751 2006-03-31 15:43:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // Implementation of Node sets, i.e. arbitrary collections of nodes. /* */ #include "camtypes.h" #include "nodeset.h" DECLARE_SOURCE("$Revision: 751 $"); // Declare smart memory handling in Debug builds #define new CAM_DEBUG_NEW CC_IMPLEMENT_MEMDUMP(NodeSet, CCObject) /******************************************************************************************** > NodeSet::NodeSet(BOOL Strict) Author: Tim_Browse (Xara Group Ltd) Created: 28/10/94 Inputs: Strict - TRUE => Strict set - a node may only be in the set 0 or 1 times. FALSE => Not strict - a node may be in the set more than once. Purpose: Create a NodeSet. It may or may not be a strict set - it depends on the "Strict" parameter. If it is strict, then when nodes are added, the class checks that they don't already exist in the set - if they do, it just does nothing and returns success. SeeAlso: NodeSet ********************************************************************************************/ NodeSet::NodeSet(BOOL Strict) : m_NodeSet( 50 ) { // Remember what kind of set this is. m_fStrictSet = Strict; } /******************************************************************************************** > BOOL NodeSet::AddNode(Node *pNode) Author: Tim_Browse (Xara Group Ltd) Created: 28/10/94 Inputs: pNode - pointer to the Node to add to this NodeSet. Returns: TRUE if the set now contains the specified Node; FALSE if out of memory => ERROR1 Purpose: Adds the specified node to this node set. If this is a strict set (see the NodeSet constructor), then the set is first scanned to see if it already contains this node. If it does, then the set is unchanged and success is returned. Errors: Out of memory => ERROR1 SeeAlso: NodeSet::NodeSet ********************************************************************************************/ BOOL NodeSet::AddNode(Node *pNode) { ERROR2IF(pNode == NULL, FALSE, "NULL node pointer in NodeSet::AddNode()"); if( m_fStrictSet ) { // Check to see if we haven't already got this node in the set size_t cNode = m_NodeSet.size(); for( size_t i = 0; i < cNode; i++ ) { if( m_NodeSet[i] == pNode ) // Already have this node - return success return TRUE; } } // See if we can add another node to this set. m_NodeSet.push_back( pNode ); // Return success to caller return TRUE; } /******************************************************************************************** > void NodeSet::MakeEmpty() Author: Tim_Browse (Xara Group Ltd) Created: 28/10/94 Purpose: Remove all nodes from this NodeSet. SeeAlso: DynamicArray::EmptyArray ********************************************************************************************/ void NodeSet::MakeEmpty() { // Delete all the array elements, and create a new set that are all NULL. m_NodeSet.clear(); } /******************************************************************************************** > void NodeSet::MarkNodes() Author: Tim_Browse (Xara Group Ltd) Created: 28/10/94 Purpose: Set the MARKED flag on all Nodes in this NodeSet. This is usually done before doing a selective rendering pass on the document tree. SeeAlso: NodeSet::UnmarkNodes ********************************************************************************************/ void NodeSet::MarkNodes() { } /******************************************************************************************** > void NodeSet::UnmarkNodes() Author: Tim_Browse (Xara Group Ltd) Created: 28/10/94 Purpose: Clear the MARKED flag on all Nodes in this NodeSet. This is usually done after doing a selective rendering pass on the document tree. SeeAlso: NodeSet::MarkNodes ********************************************************************************************/ void NodeSet::UnmarkNodes() { }