LCOV - app.info - gfx/2d/BaseSize.h

LCOV - code coverage report
| Current view: | directory - gfx/2d - BaseSize.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 2 | 0 | 0.0 %
| Date: | 2012-06-02 | Functions: | 2 | 0 | 0.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
           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/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is Mozilla Corporation code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is Mozilla Foundation.
          18                 :  * Portions created by the Initial Developer are Copyright (C) 2011
          19                 :  * the Initial Developer. All Rights Reserved.
          20                 :  *
          21                 :  * Contributor(s):
          22                 :  *   Robert O'Callahan <robert@ocallahan.org>
          23                 :  *
          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
          26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          28                 :  * of those above. If you wish to allow use of your version of this file only
          29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          30                 :  * use your version of this file under the terms of the MPL, indicate your
          31                 :  * decision by deleting the provisions above and replace them with the notice
          32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          33                 :  * the provisions above, a recipient may use your version of this file under
          34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          35                 :  *
          36                 :  * ***** END LICENSE BLOCK ***** */
          37                 :
          38                 : #ifndef MOZILLA_GFX_BASESIZE_H_
          39                 : #define MOZILLA_GFX_BASESIZE_H_
          40                 :
          41                 : namespace mozilla {
          42                 : namespace gfx {
          43                 :
          44                 : /**
          45                 :  * Do not use this class directly. Subclass it, pass that subclass as the
          46                 :  * Sub parameter, and only use that subclass. This allows methods to safely
          47                 :  * cast 'this' to 'Sub*'.
          48                 :  */
          49                 : template <class T, class Sub>
          50                 : struct BaseSize {
          51                 :   T width, height;
          52                 :
          53                 :   // Constructors
          54               0 :   BaseSize() : width(0), height(0) {}
          55               0 :   BaseSize(T aWidth, T aHeight) : width(aWidth), height(aHeight) {}
          56                 :
          57                 :   void SizeTo(T aWidth, T aHeight) { width = aWidth; height = aHeight; }
          58                 :
          59                 :   // Note that '=' isn't defined so we'll get the
          60                 :   // compiler generated default assignment operator
          61                 :
          62                 :   bool operator==(const Sub& aSize) const {
          63                 :     return width == aSize.width && height == aSize.height;
          64                 :   }
          65                 :   bool operator!=(const Sub& aSize) const {
          66                 :     return width != aSize.width || height != aSize.height;
          67                 :   }
          68                 :   bool operator<=(const Sub& aSize) const {
          69                 :     return width <= aSize.width && height <= aSize.height;
          70                 :   }
          71                 :   bool operator<(const Sub& aSize) const {
          72                 :     return *this <= aSize && *this != aSize;
          73                 :   }
          74                 :
          75                 :   Sub operator+(const Sub& aSize) const {
          76                 :     return Sub(width + aSize.width, height + aSize.height);
          77                 :   }
          78                 :   Sub operator-(const Sub& aSize) const {
          79                 :     return Sub(width - aSize.width, height - aSize.height);
          80                 :   }
          81                 :   Sub& operator+=(const Sub& aSize) {
          82                 :     width += aSize.width;
          83                 :     height += aSize.height;
          84                 :     return *static_cast<Sub*>(this);
          85                 :   }
          86                 :   Sub& operator-=(const Sub& aSize) {
          87                 :     width -= aSize.width;
          88                 :     height -= aSize.height;
          89                 :     return *static_cast<Sub*>(this);
          90                 :   }
          91                 :
          92                 :   Sub operator*(T aScale) const {
          93                 :     return Sub(width * aScale, height * aScale);
          94                 :   }
          95                 :   Sub operator/(T aScale) const {
          96                 :     return Sub(width / aScale, height / aScale);
          97                 :   }
          98                 : };
          99                 :
         100                 : }
         101                 : }
         102                 :
         103                 : #endif /* MOZILLA_GFX_BASESIZE_H_ */

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