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