src/Dimension.h

   1 // -*- C++ -*-
   2 /**
   3  * \file Dimension.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author André Pönitz
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #ifndef DIMENSION_H
  13 #define DIMENSION_H
  14
  15 namespace lyx {
  16
  17 /// Simple wrapper around three ints
  18 class Dimension {
  19 public:
  20         /// constructor
  21         Dimension() : wid(0), asc(0), des(0) {}
  22         /// initialize data
  23         Dimension(int w, int a, int d) : wid(w), asc(a), des(d) {}
  24
  25         Dimension & operator=(Dimension const & dim) {
  26                 wid = dim.wid;
  27                 asc = dim.asc;
  28                 des = dim.des;
  29                 return *this;
  30         }
  31         /// glue horizontally
  32         void operator+=(Dimension const & dim);
  33         /// set to empty box
  34         void clear() { wid = asc = des = 0; }
  35         /// get height
  36         int height() const { return asc + des; }
  37         /// get ascent
  38         int ascent() const { return asc; }
  39         /// get descent
  40         int descent() const { return des; }
  41         /// get width
  42         int width() const { return wid; }
  43
  44         /// add space for a frame
  45         //void addFrame(int frame) const;
  46         /// add space for bottom part of a frame
  47         //void addFrameBottom(int frame) const;
  48
  49 public:
  50         /// these are intentionally public as things like
  51         ///
  52         ///   dim.asc += 20;
  53         ///
  54         /// are used all over the place and "hiding" those behind
  55         ///
  56         ///   dim.ascent(dim.ascent() + 20);
  57         ///
  58         /// makes the code neither faster nor clearer
  59         /// width
  60         int wid;
  61         /// ascent
  62         int asc;
  63         /// descent
  64         int des;
  65 };
  66
  67 inline
  68 bool operator==(Dimension const & a, Dimension const & b)
  69 {
  70         return a.wid == b.wid && a.asc == b.asc && a.des == b.des ;
  71 }
  72
  73
  74 inline
  75 bool operator!=(Dimension const & a, Dimension const & b)
  76 {
  77         return a.wid != b.wid || a.asc != b.asc || a.des != b.des ;
  78 }
  79
  80 class Point {
  81 public:
  82         Point()
  83                 : x_(0), y_(0)
  84         {}
  85
  86         Point(int x, int y);
  87
  88         int x_, y_;
  89 };
  90
  91 } // namespace lyx
  92
  93 #endif