Dogcows Code - chaz/openbox/blob - otk/rect.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 #ifndef   __rect_hh
   3 #define   __rect_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 }
   8
   9 #include "point.hh"
  10 #include <vector>
  11
  12 namespace otk {
  13
  14 //! The Rect class defines a rectangle in the plane.
  15 class Rect {
  16 public:
  17   //! Constructs an invalid Rect
  18   inline Rect(void) : _x1(0), _y1(0), _x2(0), _y2(0) { }
  19   //! Constructs a Rect
  20   /*!
  21     @param x The x component of the point defining the top left corner of the
  22              rectangle
  23     @param y The y component of the point defining the top left corner of the
  24              rectangle
  25     @param w The width of the rectangle
  26     @param h The height of the rectangle
  27   */
  28   inline Rect(int x, int y, int w, int h)
  29     : _x1(x), _y1(y), _x2(w + x - 1), _y2(h + y - 1) { }
  30   //! Constructs a Rect from 2 Point objects
  31   /*!
  32     @param location The point defining the top left corner of the rectangle
  33     @param size The width and height of the rectangle
  34   */
  35   inline Rect(const Point &location, const Point &size)
  36     : _x1(location.x()), _y1(location.y()),
  37       _x2(size.x() + location.x() - 1), _y2(size.y() + location.y() - 1) { }
  38   //! Constructs a Rect from an XRectangle
  39   inline explicit Rect(const XRectangle& xrect)
  40     : _x1(xrect.x), _y1(xrect.y), _x2(xrect.width + xrect.x - 1),
  41       _y2(xrect.height + xrect.y - 1) { }
  42
  43   //! Returns the left coordinate of the Rect. Identical to Rect::x.
  44   inline int left(void) const { return _x1; }
  45   //! Returns the top coordinate of the Rect. Identical to Rect::y.
  46   inline int top(void) const { return _y1; }
  47   //! Returns the right coordinate of the Rect
  48   inline int right(void) const { return _x2; }
  49   //! Returns the bottom coordinate of the Rect
  50   inline int bottom(void) const { return _y2; }
  51
  52   //! The x component of the point defining the top left corner of the Rect
  53   inline int x(void) const { return _x1; }
  54   //! The y component of the point defining the top left corner of the Rect
  55   inline int y(void) const { return _y1; }
  56   //! Returns the Point that defines the top left corner of the rectangle
  57   inline Point location() const { return Point(_x1, _y1); }
  58
  59   //! Sets the x coordinate of the Rect.
  60   /*!
  61     @param x The new x component of the point defining the top left corner of
  62              the rectangle
  63   */
  64   void setX(int x);
  65   //! Sets the y coordinate of the Rect.
  66   /*!
  67     @param y The new y component of the point defining the top left corner of
  68              the rectangle
  69   */
  70   void setY(int y);
  71   //! Sets the x and y coordinates of the Rect.
  72   /*!
  73     @param x The new x component of the point defining the top left corner of
  74              the rectangle
  75     @param y The new y component of the point defining the top left corner of
  76              the rectangle
  77   */
  78   void setPos(int x, int y);
  79   //! Sets the x and y coordinates of the Rect.
  80   /*!
  81     @param location The point defining the top left corner of the rectangle.
  82   */
  83   void setPos(const Point &location);
  84
  85   //! The width of the Rect
  86   inline int width(void) const { return _x2 - _x1 + 1; }
  87   //! The height of the Rect
  88   inline int height(void) const { return _y2 - _y1 + 1; }
  89   //! Returns the size of the Rect
  90   inline Point size() const { return Point(_x2 - _x1 + 1, _y2 - _y1 + 1); }
  91
  92   //! Sets the width of the Rect
  93   /*!
  94     @param w The new width of the rectangle
  95   */
  96   void setWidth(int w);
  97   //! Sets the height of the Rect
  98   /*!
  99     @param h The new height of the rectangle
 100   */
 101   void setHeight(int h);
 102   //! Sets the size of the Rect.
 103   /*!
 104     @param w The new width of the rectangle
 105     @param h The new height of the rectangle
 106   */
 107   void setSize(int w, int h);
 108   //! Sets the size of the Rect.
 109   /*!
 110     @param size The new size of the rectangle
 111   */
 112   void setSize(const Point &size);
 113
 114   //! Sets the position and size of the Rect
 115   /*!
 116     @param x The new x component of the point defining the top left corner of
 117              the rectangle
 118     @param y The new y component of the point defining the top left corner of
 119              the rectangle
 120     @param w The new width of the rectangle
 121     @param h The new height of the rectangle
 122    */
 123   void setRect(int x, int y, int w, int h);
 124   //! Sets the position and size of the Rect
 125   /*!
 126     @param location The new point defining the top left corner of the rectangle
 127     @param size The new size of the rectangle
 128    */
 129   void setRect(const Point &location, const Point &size);
 130
 131   //! Sets the position of all 4 sides of the Rect
 132   /*!
 133     @param l The new left coordinate of the rectangle
 134     @param t The new top coordinate of the rectangle
 135     @param r The new right coordinate of the rectangle
 136     @param b The new bottom coordinate of the rectangle
 137    */
 138   void setCoords(int l, int t, int r, int b);
 139   //! Sets the position of all 4 sides of the Rect
 140   /*!
 141     @param tl The new point at the top left of the rectangle
 142     @param br The new point at the bottom right of the rectangle
 143    */
 144   void setCoords(const Point &tl, const Point &br);
 145
 146   //! Determines if two Rect objects are equal
 147   /*!
 148     The rectangles are considered equal if they are in the same position and
 149     are the same size.
 150   */
 151   inline bool operator==(const Rect &a)
 152   { return _x1 == a._x1 && _y1 == a._y1 && _x2 == a._x2 && _y2 == a._y2; }
 153   //! Determines if two Rect objects are inequal
 154   /*!
 155     @see operator==
 156   */
 157   inline bool operator!=(const Rect &a) { return ! operator==(a); }
 158
 159   //! Returns the union of two Rect objects
 160   /*!
 161     The union of the rectangles will consist of the maximimum area that the two
 162     rectangles can make up.
 163     @param a A second Rect object to form a union with.
 164    */
 165   Rect operator|(const Rect &a) const;
 166   //! Returns the intersection of two Rect objects
 167   /*!
 168     The intersection of the rectangles will consist of just the area where the
 169     two rectangles overlap.
 170     @param a A second Rect object to form an intersection with.
 171     @return The intersection between this Rect and the one passed to the
 172             function
 173   */
 174   Rect operator&(const Rect &a) const;
 175   //! Sets the Rect to the union of itself with another Rect object
 176   /*!
 177     The union of the rectangles will consist of the maximimum area that the two
 178     rectangles can make up.
 179     @param a A second Rect object to form a union with.
 180     @return The union between this Rect and the one passed to the function
 181    */
 182   inline Rect &operator|=(const Rect &a) { *this = *this | a; return *this; }
 183   //! Sets the Rect to the intersection of itself with another Rect object
 184   /*!
 185     The intersection of the rectangles will consist of just the area where the
 186     two rectangles overlap.
 187     @param a A second Rect object to form an intersection with.
 188   */
 189   inline Rect &operator&=(const Rect &a) { *this = *this & a; return *this; }
 190
 191   //! Returns if the Rect is valid
 192   /*!
 193     A rectangle is valid only if its right and bottom coordinates are larger
 194     than its left and top coordinates (i.e. it does not have a negative width
 195     or height).
 196     @return true if the Rect is valid; otherwise, false
 197   */
 198   inline bool valid(void) const { return _x2 > _x1 && _y2 > _y1; }
 199
 200   //! Determines if this Rect intersects another Rect
 201   /*!
 202     The rectangles intersect if any part of them overlaps.
 203     @param a Another Rect object to compare this Rect with
 204     @return true if the Rect objects overlap; otherwise, false
 205   */
 206   bool intersects(const Rect &a) const;
 207   //! Determines if this Rect contains a point
 208   /*!
 209     The rectangle contains the point if it falls within the rectangle's
 210     boundaries.
 211     @param x The x coordinate of the point to operate on
 212     @param y The y coordinate of the point to operate on
 213     @return true if the point is contained within this Rect; otherwise, false
 214   */
 215   bool contains(int x, int y) const;
 216   //! Determines if this Rect contains another Rect entirely
 217   /*!
 218     This rectangle contains the second rectangle if it is entirely within this
 219     rectangle's boundaries.
 220     @param a The Rect to test for containment inside of this Rect
 221     @return true if the second Rect is contained within this Rect; otherwise,
 222             false
 223   */
 224   bool contains(const Rect &a) const;
 225
 226 private:
 227   //! The left coordinate of the Rect
 228   int _x1;
 229   //! The top coordinate of the Rect
 230   int _y1;
 231   //! The right coordinate of the Rect
 232   int _x2;
 233   //! The bottom coordinate of the Rect
 234   int _y2;
 235 };
 236
 237 //! A list for Rect objects
 238 typedef std::vector<Rect> RectList;
 239
 240 }
 241
 242 #endif // __rect_hh