nodeset.h

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// $Id: nodeset.h 751 2006-03-31 15:43:49Z alex $
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 */

// Implementation of Node sets, i.e. arbitrary collections of nodes.

#ifndef INC_NODESET
#define INC_NODESET

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

>   class NodeSet

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Purpose:    Provide a mechanism for marking a set of nodes for redrawing.  This 
                mechanism is independent of the number of render regions associated with a 
                particular tree, as it stores a list of pointers to nodes, rather than 
                marking the nodes themselves.
                The NodeSet can be instructed to mark or unmark all nodes in the set.  This
                allows us to selectively render these nodes without interfering with other
                render regions, because when we start rendering, we mark the nodes, render 
                the marked nodes, unmark the nodes, and then we have stopped rendering.
                This means we only ever mark nodes while the render region is actively
                rendering, and as there can only ever be one render region actively
                rendering at one time (including the possibility of background rendering)
                then we don't get any interaction between render regions.
    SeeAlso:    DynamicArray; DocView::ForceRedraw

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

class NodeSet : public CCObject
{
CC_DECLARE_MEMDUMP(NodeSet)

public:
    NodeSet(BOOL Strict = FALSE);
    BOOL AddNode(Node*);
    void MakeEmpty();
    void MarkNodes();
    void UnmarkNodes();

protected:
    BOOL                m_fStrictSet;
    std::vector<Node*>  m_NodeSet;  
};

#endif  // INC_NODESET

---