gfx/thebes/public/gfxPoint.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  14  *
  15  * The Original Code is Oracle Corporation code.
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  17  * The Initial Developer of the Original Code is Oracle Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 2005
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Stuart Parmenter <pavlov@pavlov.net>
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  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef GFX_POINT_H
  39 #define GFX_POINT_H
  40
  41 #include "nsMathUtils.h"
  42
  43 #include "gfxTypes.h"
  44
  45 /*
  46  * gfxSize and gfxIntSize -- please keep their member functions in sync.
  47  * also note: gfxIntSize may be replaced by nsIntSize at some point...
  48  */
  49 struct THEBES_API gfxIntSize {
  50     PRInt32 width, height;
  51
  52     gfxIntSize() {}
  53     gfxIntSize(PRInt32 _width, PRInt32 _height) : width(_width), height(_height) {}
  54
  55     void SizeTo(PRInt32 _width, PRInt32 _height) {width = _width; height = _height;}
  56
  57     int operator==(const gfxIntSize& s) const {
  58         return ((width == s.width) && (height == s.height));
  59     }
  60     int operator!=(const gfxIntSize& s) const {
  61         return ((width != s.width) || (height != s.height));
  62     }
  63     gfxIntSize operator+(const gfxIntSize& s) const {
  64         return gfxIntSize(width + s.width, height + s.height);
  65     }
  66     gfxIntSize operator-() const {
  67         return gfxIntSize(- width, - height);
  68     }
  69     gfxIntSize operator-(const gfxIntSize& s) const {
  70         return gfxIntSize(width - s.width, height - s.height);
  71     }
  72     gfxIntSize operator*(const PRInt32 v) const {
  73         return gfxIntSize(width * v, height * v);
  74     }
  75     gfxIntSize operator/(const PRInt32 v) const {
  76         return gfxIntSize(width / v, height / v);
  77     }
  78 };
  79
  80 struct THEBES_API gfxSize {
  81     gfxFloat width, height;
  82
  83     gfxSize() {}
  84     gfxSize(gfxFloat _width, gfxFloat _height) : width(_width), height(_height) {}
  85     gfxSize(const gfxIntSize& size) : width(size.width), height(size.height) {}
  86
  87     void SizeTo(gfxFloat _width, gfxFloat _height) {width = _width; height = _height;}
  88
  89     int operator==(const gfxSize& s) const {
  90         return ((width == s.width) && (height == s.height));
  91     }
  92     int operator!=(const gfxSize& s) const {
  93         return ((width != s.width) || (height != s.height));
  94     }
  95     gfxSize operator+(const gfxSize& s) const {
  96         return gfxSize(width + s.width, height + s.height);
  97     }
  98     gfxSize operator-() const {
  99         return gfxSize(- width, - height);
 100     }
 101     gfxSize operator-(const gfxSize& s) const {
 102         return gfxSize(width - s.width, height - s.height);
 103     }
 104     gfxSize operator*(const gfxFloat v) const {
 105         return gfxSize(width * v, height * v);
 106     }
 107     gfxSize operator/(const gfxFloat v) const {
 108         return gfxSize(width / v, height / v);
 109     }
 110 };
 111
 112
 113
 114 struct THEBES_API gfxPoint {
 115     gfxFloat x, y;
 116
 117     gfxPoint() { }
 118     gfxPoint(const gfxPoint& p) : x(p.x), y(p.y) {}
 119     gfxPoint(gfxFloat _x, gfxFloat _y) : x(_x), y(_y) {}
 120
 121     void MoveTo(gfxFloat aX, gfxFloat aY) { x = aX; y = aY; }
 122
 123     int operator==(const gfxPoint& p) const {
 124         return ((x == p.x) && (y == p.y));
 125     }
 126     int operator!=(const gfxPoint& p) const {
 127         return ((x != p.x) || (y != p.y));
 128     }
 129     const gfxPoint& operator+=(const gfxPoint& p) {
 130         x += p.x;
 131         y += p.y;
 132         return *this;
 133     }
 134     gfxPoint operator+(const gfxPoint& p) const {
 135         return gfxPoint(x + p.x, y + p.y);
 136     }
 137     gfxPoint operator+(const gfxSize& s) const {
 138         return gfxPoint(x + s.width, y + s.height);
 139     }
 140     gfxPoint operator-(const gfxPoint& p) const {
 141         return gfxPoint(x - p.x, y - p.y);
 142     }
 143     gfxPoint operator-(const gfxSize& s) const {
 144         return gfxPoint(x - s.width, y - s.height);
 145     }
 146     gfxPoint operator-() const {
 147         return gfxPoint(- x, - y);
 148     }
 149     gfxPoint operator*(const gfxFloat v) const {
 150         return gfxPoint(x * v, y * v);
 151     }
 152     gfxPoint operator/(const gfxFloat v) const {
 153         return gfxPoint(x / v, y / v);
 154     }
 155     // Round() is *not* rounding to nearest integer if the values are negative.
 156     // They are always rounding as floor(n + 0.5).
 157     // See https://bugzilla.mozilla.org/show_bug.cgi?id=410748#c14
 158     // And if you need similar method which is using NS_round(), you should
 159     // create new |RoundAwayFromZero()| method.
 160     gfxPoint& Round() {
 161         x = NS_floor(x + 0.5);
 162         y = NS_floor(y + 0.5);
 163         return *this;
 164     }
 165 };
 166
 167 #endif /* GFX_POINT_H */