textcaretcache.h

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#pragma once

#include <QHash>


namespace edbee {


class TextDocument;
class TextRenderer;
class TextRangeSet;

class TextCaretCache
{
public:
    TextCaretCache( TextDocument* doc, TextRenderer* renderer );

    void clear();
    void fill( TextRangeSet& selection );
    void replaceAll( TextCaretCache& cache );

    int xpos( int offset );
    void add( int offset, int xpos );
    void add( int offset );

    void caretMovedFromOldOffsetToNewOffset( int oldOffset, int newOffset );

    bool isFilled();


    void dump();

private:

    TextDocument* textDocumentRef_; 
    TextRenderer* textRendererRef_; 
//    QVector<int> xPosCache_;        ///< The xpos cache for the carets
    QHash<int,int> xPosCache_;      
};

} // edbee