src/texrow.h

   1 // -*- C++ -*-
   2 /**
   3  * \file texrow.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Matthias Ettrich
   8  * \author Lars Gullik Bjønnes
   9  * \author John Levon
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #ifndef TEXROW_H
  15 #define TEXROW_H
  16
  17 #include <list>
  18
  19
  20 /// Represents the correspondence between paragraphs and the generated LaTeX file
  21 class TexRow {
  22 public:
  23         ///
  24         TexRow() : count(0), lastid(-1), lastpos(-1) {}
  25
  26         TexRow & operator+= (TexRow const &);
  27
  28         /// Clears structure
  29         void reset();
  30
  31         /// Define what paragraph and position the next row will represent
  32         void start(int id, int pos);
  33
  34         /// Insert node when line is completed
  35         void newline();
  36
  37         /**
  38          * getIdFromRow - find pid and position for a given row
  39          * @param row row number to find
  40          * @param id set to id if found
  41          * @param pos set to paragraph position if found
  42          * @return true if found, false otherwise
  43          *
  44          * If the row could not be found, pos is set to zero and
  45          * id is set to -1
  46          */
  47         bool getIdFromRow(int row, int & id, int & pos) const;
  48
  49         /// Returns the number of rows contained
  50         int rows() const { return count; }
  51
  52         /// an individual id/pos <=> row mapping
  53         class RowItem {
  54         public:
  55                 RowItem(int id, int pos, int row)
  56                         : id_(id), pos_(pos), rownumber_(row)
  57                 {}
  58
  59                 /// paragraph id
  60                 int id() const {
  61                         return id_;
  62                 }
  63
  64                 /// set paragraph position
  65                 void pos(int p) {
  66                         pos_ = p;
  67                 }
  68
  69                 /// paragraph position
  70                 int pos() const {
  71                         return pos_;
  72                 }
  73
  74                 /// row number
  75                 int rownumber() const {
  76                         return rownumber_;
  77                 }
  78         private:
  79                 int id_;
  80                 int pos_;
  81                 int rownumber_;
  82         };
  83         ///
  84         typedef std::list<RowItem> RowList;
  85 private:
  86         /// number of lines
  87         unsigned int count;
  88         /// container of id/pos <=> row mapping
  89         RowList rowlist;
  90         /// Last paragraph
  91         int lastid;
  92         /// Last position
  93         int lastpos;
  94 };
  95
  96 #endif // TEXROW_H