include/basegfx/vector/b2dsize.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <basegfx/tuple/Size2D.hxx>
  23 #include <basegfx/matrix/b2dhommatrix.hxx>
  24 #include <basegfx/vector/b2isize.hxx>
  25 #include <basegfx/numeric/ftools.hxx>
  26 #include <basegfx/basegfxdllapi.h>
  27
  28 namespace basegfx
  29 {
  30 class B2DSize : public Size2D<double>
  31 {
  32 public:
  33     B2DSize()
  34         : Size2D(0.0, 0.0)
  35     {
  36     }
  37
  38     B2DSize(double fX, double fY)
  39         : Size2D(fX, fY)
  40     {
  41     }
  42
  43     B2DSize(Size2D<double> const& rSize)
  44         : Size2D(rSize)
  45     {
  46     }
  47
  48     explicit B2DSize(B2ISize const& rSize)
  49         : Size2D(rSize.getX(), rSize.getY())
  50     {
  51     }
  52
  53     /** Transform size by given transformation matrix. */
  54     B2DSize& operator*=(const B2DHomMatrix& rMatrix)
  55     {
  56         const double fTempX(rMatrix.get(0, 0) * getWidth() + rMatrix.get(0, 1) * getHeight());
  57         const double fTempY(rMatrix.get(1, 0) * getWidth() + rMatrix.get(1, 1) * getHeight());
  58         setWidth(fTempX);
  59         setHeight(fTempY);
  60         return *this;
  61     }
  62
  63     using Size2D<double>::operator+=;
  64     using Size2D<double>::operator-=;
  65     using Size2D<double>::operator*=;
  66     using Size2D<double>::operator/=;
  67     using Size2D<double>::operator-;
  68
  69     double getLength() const
  70     {
  71         if (fTools::equalZero(getWidth()))
  72         {
  73             return fabs(getHeight());
  74         }
  75         else if (fTools::equalZero(getHeight()))
  76         {
  77             return fabs(getWidth());
  78         }
  79
  80         return hypot(getWidth(), getHeight());
  81     }
  82 };
  83
  84 inline B2DSize operator*(B2DHomMatrix const& rMatrix, B2DSize const& rSize)
  85 {
  86     B2DSize aRes(rSize);
  87     aRes *= rMatrix;
  88     return aRes;
  89 }
  90 }
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */