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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   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 another Rect
  39   /*!
  40     @param rect The rectangle from which to construct this new one
  41   */
  42   inline Rect(const Rect &rect)
  43     : _x1(rect._x1), _y1(rect._y1), _x2(rect._x2), _y2(rect._y2) { }
  44   //! Constructs a Rect from an XRectangle
  45   inline explicit Rect(const XRectangle& xrect)
  46     : _x1(xrect.x), _y1(xrect.y), _x2(xrect.width + xrect.x - 1),
  47       _y2(xrect.height + xrect.y - 1) { }
  48
  49   //! Returns the left coordinate of the Rect. Identical to Rect::x.
  50   inline int left(void) const { return _x1; }
  51   //! Returns the top coordinate of the Rect. Identical to Rect::y.
  52   inline int top(void) const { return _y1; }
  53   //! Returns the right coordinate of the Rect
  54   inline int right(void) const { return _x2; }
  55   //! Returns the bottom coordinate of the Rect
  56   inline int bottom(void) const { return _y2; }
  57
  58   //! The x component of the point defining the top left corner of the Rect
  59   inline int x(void) const { return _x1; }
  60   //! The y component of the point defining the top left corner of the Rect
  61   inline int y(void) const { return _y1; }
  62   //! Returns the Point that defines the top left corner of the rectangle
  63   inline Point location() const { return Point(_x1, _y1); }
  64
  65   //! Sets the x coordinate of the Rect.
  66   /*!
  67     @param x The new x component of the point defining the top left corner of
  68              the rectangle
  69   */
  70   void setX(int x);
  71   //! Sets the y coordinate of the Rect.
  72   /*!
  73     @param y The new y component of the point defining the top left corner of
  74              the rectangle
  75   */
  76   void setY(int y);
  77   //! Sets the x and y coordinates of the Rect.
  78   /*!
  79     @param x The new x component of the point defining the top left corner of
  80              the rectangle
  81     @param y The new y component of the point defining the top left corner of
  82              the rectangle
  83   */
  84   void setPos(int x, int y);
  85   //! Sets the x and y coordinates of the Rect.
  86   /*!
  87     @param location The point defining the top left corner of the rectangle.
  88   */
  89   void setPos(const Point &location);
  90
  91   //! The width of the Rect
  92   inline int width(void) const { return _x2 - _x1 + 1; }
  93   //! The height of the Rect
  94   inline int height(void) const { return _y2 - _y1 + 1; }
  95   //! Returns the size of the Rect
  96   inline Point size() const { return Point(_x2 - _x1 + 1, _y2 - _y1 + 1); }
  97
  98   //! Sets the width of the Rect
  99   /*!
 100     @param w The new width of the rectangle
 101   */
 102   void setWidth(int w);
 103   //! Sets the height of the Rect
 104   /*!
 105     @param h The new height of the rectangle
 106   */
 107   void setHeight(int h);
 108   //! Sets the size of the Rect.
 109   /*!
 110     @param w The new width of the rectangle
 111     @param h The new height of the rectangle
 112   */
 113   void setSize(int w, int h);
 114   //! Sets the size of the Rect.
 115   /*!
 116     @param size The new size of the rectangle
 117   */
 118   void setSize(const Point &size);
 119
 120   //! Sets the position and size of the Rect
 121   /*!
 122     @param x The new x component of the point defining the top left corner of
 123              the rectangle
 124     @param y The new y component of the point defining the top left corner of
 125              the rectangle
 126     @param w The new width of the rectangle
 127     @param h The new height of the rectangle
 128    */
 129   void setRect(int x, int y, int w, int h);
 130   //! Sets the position and size of the Rect
 131   /*!
 132     @param location The new point defining the top left corner of the rectangle
 133     @param size The new size of the rectangle
 134    */
 135   void setRect(const Point &location, const Point &size);
 136
 137   //! Sets the position of all 4 sides of the Rect
 138   /*!
 139     @param l The new left coordinate of the rectangle
 140     @param t The new top coordinate of the rectangle
 141     @param r The new right coordinate of the rectangle
 142     @param b The new bottom coordinate of the rectangle
 143    */
 144   void setCoords(int l, int t, int r, int b);
 145   //! Sets the position of all 4 sides of the Rect
 146   /*!
 147     @param tl The new point at the top left of the rectangle
 148     @param br The new point at the bottom right of the rectangle
 149    */
 150   void setCoords(const Point &tl, const Point &br);
 151
 152   //! Determines if two Rect objects are equal
 153   /*!
 154     The rectangles are considered equal if they are in the same position and
 155     are the same size.
 156   */
 157   inline bool operator==(const Rect &a)
 158   { return _x1 == a._x1 && _y1 == a._y1 && _x2 == a._x2 && _y2 == a._y2; }
 159   //! Determines if two Rect objects are inequal
 160   /*!
 161     @see operator==
 162   */
 163   inline bool operator!=(const Rect &a) { return ! operator==(a); }
 164
 165   //! Returns the union of two Rect objects
 166   /*!
 167     The union of the rectangles will consist of the maximimum area that the two
 168     rectangles can make up.
 169     @param a A second Rect object to form a union with.
 170    */
 171   Rect operator|(const Rect &a) const;
 172   //! Returns the intersection of two Rect objects
 173   /*!
 174     The intersection of the rectangles will consist of just the area where the
 175     two rectangles overlap.
 176     @param a A second Rect object to form an intersection with.
 177     @return The intersection between this Rect and the one passed to the
 178             function
 179   */
 180   Rect operator&(const Rect &a) const;
 181   //! Sets the Rect to the union of itself with another Rect object
 182   /*!
 183     The union of the rectangles will consist of the maximimum area that the two
 184     rectangles can make up.
 185     @param a A second Rect object to form a union with.
 186     @return The union between this Rect and the one passed to the function
 187    */
 188   inline Rect &operator|=(const Rect &a) { *this = *this | a; return *this; }
 189   //! Sets the Rect to the intersection of itself with another Rect object
 190   /*!
 191     The intersection of the rectangles will consist of just the area where the
 192     two rectangles overlap.
 193     @param a A second Rect object to form an intersection with.
 194   */
 195   inline Rect &operator&=(const Rect &a) { *this = *this & a; return *this; }
 196
 197   //! Returns if the Rect is valid
 198   /*!
 199     A rectangle is valid only if its right and bottom coordinates are larger
 200     than its left and top coordinates (i.e. it does not have a negative width
 201     or height).
 202     @return true if the Rect is valid; otherwise, false
 203   */
 204   inline bool valid(void) const { return _x2 > _x1 && _y2 > _y1; }
 205
 206   //! Determines if this Rect intersects another Rect
 207   /*!
 208     The rectangles intersect if any part of them overlaps.
 209     @param a Another Rect object to compare this Rect with
 210     @return true if the Rect objects overlap; otherwise, false
 211   */
 212   bool intersects(const Rect &a) const;
 213   //! Determines if this Rect contains a point
 214   /*!
 215     The rectangle contains the point if it falls within the rectangle's
 216     boundaries.
 217     @param x The x coordinate of the point to operate on
 218     @param y The y coordinate of the point to operate on
 219     @return true if the point is contained within this Rect; otherwise, false
 220   */
 221   bool contains(int x, int y) const;
 222   //! Determines if this Rect contains a point
 223   /*!
 224     The rectangle contains the point if it falls within the rectangle's
 225     boundaries.
 226     @param p The point to operate on
 227     @return true if the point is contained within this Rect; otherwise, false
 228   */
 229   bool contains(const Point &p) const;
 230   //! Determines if this Rect contains another Rect entirely
 231   /*!
 232     This rectangle contains the second rectangle if it is entirely within this
 233     rectangle's boundaries.
 234     @param a The Rect to test for containment inside of this Rect
 235     @return true if the second Rect is contained within this Rect; otherwise,
 236             false
 237   */
 238   bool contains(const Rect &a) const;
 239
 240 private:
 241   //! The left coordinate of the Rect
 242   int _x1;
 243   //! The top coordinate of the Rect
 244   int _y1;
 245   //! The right coordinate of the Rect
 246   int _x2;
 247   //! The bottom coordinate of the Rect
 248   int _y2;
 249 };
 250
 251 //! A list for Rect objects
 252 typedef std::vector<Rect> RectList;
 253
 254 }
 255
 256 #endif // __rect_hh