gecko-dev/gfx/public/nsPoint.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* 1.1 (the "License"); you may not use this file except in compliance with
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*
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* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef NSPOINT_H
#define NSPOINT_H
#include "nsCoord.h"
struct nsIntPoint;
struct nsPoint {
nscoord x, y;
// Constructors
nsPoint() {}
nsPoint(const nsPoint& aPoint) { x = aPoint.x; y = aPoint.y;}
nsPoint(nscoord aX, nscoord aY) { VERIFY_COORD(aX); VERIFY_COORD(aY); x = aX; y = aY;}
void MoveTo(nscoord aX, nscoord aY) {x = aX; y = aY;}
void MoveBy(nscoord aDx, nscoord aDy) {x += aDx; y += aDy;}
// Overloaded operators. Note that '=' isn't defined so we'll get the
// compiler generated default assignment operator
PRBool operator==(const nsPoint& aPoint) const {
return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
}
PRBool operator!=(const nsPoint& aPoint) const {
return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
}
nsPoint operator+(const nsPoint& aPoint) const {
return nsPoint(x + aPoint.x, y + aPoint.y);
}
nsPoint operator-(const nsPoint& aPoint) const {
return nsPoint(x - aPoint.x, y - aPoint.y);
}
nsPoint& operator+=(const nsPoint& aPoint) {
x += aPoint.x;
y += aPoint.y;
return *this;
}
nsPoint& operator-=(const nsPoint& aPoint) {
x -= aPoint.x;
y -= aPoint.y;
return *this;
}
nsPoint operator-() const {
return nsPoint(-x, -y);
}
inline nsIntPoint ToNearestPixels(nscoord aAppUnitsPerPixel) const;
};
struct nsIntPoint {
PRInt32 x, y;
// Constructors
nsIntPoint() {}
nsIntPoint(const nsIntPoint& aPoint) { x = aPoint.x; y = aPoint.y;}
nsIntPoint(PRInt32 aX, PRInt32 aY) { x = aX; y = aY;}
PRBool operator==(const nsIntPoint& aPoint) const {
return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
}
PRBool operator!=(const nsIntPoint& aPoint) const {
return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
}
nsIntPoint operator+(const nsIntPoint& aPoint) const {
return nsIntPoint(x + aPoint.x, y + aPoint.y);
}
nsIntPoint operator-(const nsIntPoint& aPoint) const {
return nsIntPoint(x - aPoint.x, y - aPoint.y);
}
nsIntPoint& operator+=(const nsIntPoint& aPoint) {
x += aPoint.x;
y += aPoint.y;
return *this;
}
nsIntPoint& operator-=(const nsIntPoint& aPoint) {
x -= aPoint.x;
y -= aPoint.y;
return *this;
}
nsIntPoint operator-() const {
return nsIntPoint(-x, -y);
}
void MoveTo(PRInt32 aX, PRInt32 aY) {x = aX; y = aY;}
};
inline nsIntPoint
nsPoint::ToNearestPixels(nscoord aAppUnitsPerPixel) const {
return nsIntPoint(
NSToIntRound(NSAppUnitsToFloatPixels(x, float(aAppUnitsPerPixel))),
NSToIntRound(NSAppUnitsToFloatPixels(y, float(aAppUnitsPerPixel))));
}
#endif /* NSPOINT_H */