hdr/pcol.hh

   1 #ifndef COLS_HH
   2 #define COLS_HH
   3
   4 #include "glob.hh"
   5 #include "boxes.hh"
   6 #include "plist.hh"
   7 #include "item.hh"
   8
   9
  10 /**
  11    stuff grouped vertically.
  12     This is a class to address items vertically. It contains the data for:
  13     \begin{itemize}
  14     \item
  15     unbroken score
  16     \item
  17     broken score
  18     \item
  19     the linespacing problem
  20     \end{itemize}
  21   */
  22
  23 struct PCol {
  24     PointerList<const Item*> its;
  25     PointerList<const Spanner*> stoppers, starters;
  26
  27
  28
  29     /** prebreak is put before end of line.
  30     if broken here, then (*this) column is discarded, and prebreak
  31     is put at end of line, owned by Col
  32     */
  33     PCol *prebreak_p_;
  34
  35     /// postbreak at beginning of the new line
  36     PCol *postbreak_p_;
  37
  38     /** if this column is pre or postbreak, then this field points to
  39      the parent.  */
  40     PCol *daddy_l_;
  41
  42     /// if lines are broken then this column is in #line#
  43     const Line_of_score *line_l_;
  44
  45     /// if lines are broken then this column x-coord #hpos#
  46     Real hpos;
  47
  48     PScore * pscore_l_;
  49
  50     /* *************** */
  51     /// which  one (left =0)
  52     int rank() const;
  53
  54     /// does this column have items
  55     bool used_b() const;
  56
  57     void add(Item *i);
  58
  59     /// Can this be broken? true eg. for bars.
  60     bool breakable_b()const;
  61
  62     Interval width() const;
  63     ~PCol();
  64     PCol(PCol * parent);
  65
  66     /**
  67       which col comes first?.
  68       signed compare on columns.
  69
  70       @return < 0 if c1 < c2.
  71     */static int compare(const PCol &c1, const PCol &c2);
  72
  73
  74     void OK() const;
  75     void set_breakable();
  76     void print()const;
  77 private:
  78     PCol(PCol const&){}
  79 };
  80
  81
  82 #include "compare.hh"
  83 instantiate_compare(PCol &, PCol::compare);
  84
  85
  86 #endif