gecko-dev/gfx/thebes/public/gfxPoint.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Oracle Corporation code.
*
* The Initial Developer of the Original Code is Oracle Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either 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"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_POINT_H
#define GFX_POINT_H
#include "nsMathUtils.h"
#include "gfxTypes.h"
/*
* gfxSize and gfxIntSize -- please keep their member functions in sync.
* also note: gfxIntSize may be replaced by nsIntSize at some point...
*/
struct THEBES_API gfxIntSize {
PRInt32 width, height;
gfxIntSize() {}
gfxIntSize(PRInt32 _width, PRInt32 _height) : width(_width), height(_height) {}
void SizeTo(PRInt32 _width, PRInt32 _height) {width = _width; height = _height;}
int operator==(const gfxIntSize& s) const {
return ((width == s.width) && (height == s.height));
}
int operator!=(const gfxIntSize& s) const {
return ((width != s.width) || (height != s.height));
}
gfxIntSize operator+(const gfxIntSize& s) const {
return gfxIntSize(width + s.width, height + s.height);
}
gfxIntSize operator-() const {
return gfxIntSize(- width, - height);
}
gfxIntSize operator-(const gfxIntSize& s) const {
return gfxIntSize(width - s.width, height - s.height);
}
gfxIntSize operator*(const PRInt32 v) const {
return gfxIntSize(width * v, height * v);
}
gfxIntSize operator/(const PRInt32 v) const {
return gfxIntSize(width / v, height / v);
}
};
struct THEBES_API gfxSize {
gfxFloat width, height;
gfxSize() {}
gfxSize(gfxFloat _width, gfxFloat _height) : width(_width), height(_height) {}
gfxSize(const gfxIntSize& size) : width(size.width), height(size.height) {}
void SizeTo(gfxFloat _width, gfxFloat _height) {width = _width; height = _height;}
int operator==(const gfxSize& s) const {
return ((width == s.width) && (height == s.height));
}
int operator!=(const gfxSize& s) const {
return ((width != s.width) || (height != s.height));
}
gfxSize operator+(const gfxSize& s) const {
return gfxSize(width + s.width, height + s.height);
}
gfxSize operator-() const {
return gfxSize(- width, - height);
}
gfxSize operator-(const gfxSize& s) const {
return gfxSize(width - s.width, height - s.height);
}
gfxSize operator*(const gfxFloat v) const {
return gfxSize(width * v, height * v);
}
gfxSize operator/(const gfxFloat v) const {
return gfxSize(width / v, height / v);
}
};
struct THEBES_API gfxPoint {
gfxFloat x, y;
gfxPoint() { }
gfxPoint(const gfxPoint& p) : x(p.x), y(p.y) {}
gfxPoint(gfxFloat _x, gfxFloat _y) : x(_x), y(_y) {}
void MoveTo(gfxFloat aX, gfxFloat aY) { x = aX; y = aY; }
int operator==(const gfxPoint& p) const {
return ((x == p.x) && (y == p.y));
}
int operator!=(const gfxPoint& p) const {
return ((x != p.x) || (y != p.y));
}
const gfxPoint& operator+=(const gfxPoint& p) {
x += p.x;
y += p.y;
return *this;
}
gfxPoint operator+(const gfxPoint& p) const {
return gfxPoint(x + p.x, y + p.y);
}
gfxPoint operator+(const gfxSize& s) const {
return gfxPoint(x + s.width, y + s.height);
}
gfxPoint operator-(const gfxPoint& p) const {
return gfxPoint(x - p.x, y - p.y);
}
gfxPoint operator-(const gfxSize& s) const {
return gfxPoint(x - s.width, y - s.height);
}
gfxPoint operator-() const {
return gfxPoint(- x, - y);
}
gfxPoint operator*(const gfxFloat v) const {
return gfxPoint(x * v, y * v);
}
gfxPoint operator/(const gfxFloat v) const {
return gfxPoint(x / v, y / v);
}
// Round() is *not* rounding to nearest integer if the values are negative.
// They are always rounding as floor(n + 0.5).
// See https://bugzilla.mozilla.org/show_bug.cgi?id=410748#c14
// And if you need similar method which is using NS_round(), you should
// create new |RoundAwayFromZero()| method.
gfxPoint& Round() {
x = NS_floor(x + 0.5);
y = NS_floor(y + 0.5);
return *this;
}
};
#endif /* GFX_POINT_H */