src/texrow.h

   1 // -*- C++ -*-
   2 /**
   3  * \file texrow.h
   4  * Copyright 1995-2002 the LyX Team
   5  * Read the file COPYING
   6  *
   7  * \author Matthias Ettrich
   8  */
   9
  10
  11 #ifndef TEXROW_H
  12 #define TEXROW_H
  13
  14 #include <list>
  15
  16
  17 /// Represents the correspondence between paragraphs and the generated LaTeX file
  18 class TexRow {
  19 public:
  20         ///
  21         TexRow() : count(0), lastid(-1), lastpos(-1) {}
  22
  23         TexRow & operator+= (TexRow const &);
  24
  25         /// Clears structure
  26         void reset();
  27
  28         /// Define what paragraph and position the next row will represent
  29         void start(int id, int pos);
  30
  31         /// Insert node when line is completed
  32         void newline();
  33
  34         /**
  35          * getIdFromRow - find pid and position for a given row
  36          * @param row row number to find
  37          * @param id set to id if found
  38          * @param pos set to paragraph position if found
  39          * @return true if found, false otherwise
  40          *
  41          * If the row could not be found, pos is set to zero and
  42          * id is set to -1
  43          */
  44         bool getIdFromRow(int row, int & id, int & pos) const;
  45
  46         /// Returns the number of rows contained
  47         int rows() const { return count; }
  48
  49         /// an individual id/pos <=> row mapping
  50         class RowItem {
  51         public:
  52                 RowItem(int id, int pos, int row)
  53                         : id_(id), pos_(pos), rownumber_(row)
  54                 {}
  55
  56                 /// paragraph id
  57                 int id() const {
  58                         return id_;
  59                 }
  60
  61                 /// set paragraph position
  62                 void pos(int p) {
  63                         pos_ = p;
  64                 }
  65
  66                 /// paragraph position
  67                 int pos() const {
  68                         return pos_;
  69                 }
  70
  71                 /// row number
  72                 int rownumber() const {
  73                         return rownumber_;
  74                 }
  75         private:
  76                 int id_;
  77                 int pos_;
  78                 int rownumber_;
  79         };
  80         ///
  81         typedef std::list<RowItem> RowList;
  82 private:
  83         /// number of lines
  84         unsigned int count;
  85         /// container of id/pos <=> row mapping
  86         RowList rowlist;
  87         /// Last paragraph
  88         int lastid;
  89         /// Last position
  90         int lastpos;
  91 };
  92
  93 #endif // TEXROW_H