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nsPoint.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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00037 
00038 #ifndef NSPOINT_H
00039 #define NSPOINT_H
00040 
00041 #include "nsCoord.h"
00042 
00043 struct nsPoint {
00044   nscoord x, y;
00045 
00046   // Constructors
00047   nsPoint() {}
00048   nsPoint(const nsPoint& aPoint) { x = aPoint.x; y = aPoint.y;}
00049   nsPoint(nscoord aX, nscoord aY) { VERIFY_COORD(aX); VERIFY_COORD(aY); x = aX; y = aY;}
00050 
00051   void MoveTo(nscoord aX, nscoord aY) {x = aX; y = aY;}
00052   void MoveBy(nscoord aDx, nscoord aDy) {x += aDx; y += aDy;}
00053 
00054   // Overloaded operators. Note that '=' isn't defined so we'll get the
00055   // compiler generated default assignment operator
00056   PRBool   operator==(const nsPoint& aPoint) const {
00057     return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
00058   }
00059   PRBool   operator!=(const nsPoint& aPoint) const {
00060     return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
00061   }
00062   nsPoint operator+(const nsPoint& aPoint) const {
00063     return nsPoint(x + aPoint.x, y + aPoint.y);
00064   }
00065   nsPoint operator-(const nsPoint& aPoint) const {
00066     return nsPoint(x - aPoint.x, y - aPoint.y);
00067   }
00068   nsPoint& operator+=(const nsPoint& aPoint) {
00069     x += aPoint.x;
00070     y += aPoint.y;
00071     return *this;
00072   }
00073   nsPoint& operator-=(const nsPoint& aPoint) {
00074     x -= aPoint.x;
00075     y -= aPoint.y;
00076     return *this;
00077   }
00078 
00079   nsPoint operator-() const {
00080     return nsPoint(-x, -y);
00081   }
00082 };
00083 
00084 #ifdef NS_COORD_IS_FLOAT
00085 struct nsIntPoint {
00086   PRInt32 x, y;
00087 
00088   // Constructors
00089   nsIntPoint() {}
00090   nsIntPoint(const nsIntPoint& aPoint) { x = aPoint.x; y = aPoint.y;}
00091   nsIntPoint(PRInt32 aX, PRInt32 aY) { x = aX; y = aY;}
00092 
00093   void MoveTo(PRInt32 aX, PRInt32 aY) {x = aX; y = aY;}
00094 };
00095 
00096 typedef nsPoint nsFloatPoint;
00097 #else
00098 typedef nsPoint nsIntPoint;
00099 
00100 struct nsFloatPoint {
00101   float x, y;
00102 
00103   // Constructors
00104   nsFloatPoint() {}
00105   nsFloatPoint(const nsFloatPoint& aPoint) {x = aPoint.x; y = aPoint.y;}
00106   nsFloatPoint(float aX, float aY) {x = aX; y = aY;}
00107 
00108   void MoveTo(float aX, float aY) {x = aX; y = aY;}
00109   void MoveTo(nscoord aX, nscoord aY) {x = (float)aX; y = (float)aY;}
00110   void MoveBy(float aDx, float aDy) {x += aDx; y += aDy;}
00111 
00112   // Overloaded operators. Note that '=' isn't defined so we'll get the
00113   // compiler generated default assignment operator
00114   PRBool   operator==(const nsFloatPoint& aPoint) const {
00115     return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
00116   }
00117   PRBool   operator!=(const nsFloatPoint& aPoint) const {
00118     return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
00119   }
00120   nsFloatPoint operator+(const nsFloatPoint& aPoint) const {
00121     return nsFloatPoint(x + aPoint.x, y + aPoint.y);
00122   }
00123   nsFloatPoint operator-(const nsFloatPoint& aPoint) const {
00124     return nsFloatPoint(x - aPoint.x, y - aPoint.y);
00125   }
00126   nsFloatPoint& operator+=(const nsFloatPoint& aPoint) {
00127     x += aPoint.x;
00128     y += aPoint.y;
00129     return *this;
00130   }
00131   nsFloatPoint& operator-=(const nsFloatPoint& aPoint) {
00132     x -= aPoint.x;
00133     y -= aPoint.y;
00134     return *this;
00135   }
00136 };
00137 #endif // !NS_COORD_IS_FLOAT
00138 
00139 #endif /* NSPOINT_H */