lotuswordpro/source/filter/lwpsdwrect.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*************************************************************************
   3  *
   4  *  The Contents of this file are made available subject to the terms of
   5  *  either of the following licenses
   6  *
   7  *         - GNU Lesser General Public License Version 2.1
   8  *         - Sun Industry Standards Source License Version 1.1
   9  *
  10  *  Sun Microsystems Inc., October, 2000
  11  *
  12  *  GNU Lesser General Public License Version 2.1
  13  *  =============================================
  14  *  Copyright 2000 by Sun Microsystems, Inc.
  15  *  901 San Antonio Road, Palo Alto, CA 94303, USA
  16  *
  17  *  This library is free software; you can redistribute it and/or
  18  *  modify it under the terms of the GNU Lesser General Public
  19  *  License version 2.1, as published by the Free Software Foundation.
  20  *
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  22  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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  24  *  Lesser General Public License for more details.
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  26  *  You should have received a copy of the GNU Lesser General Public
  27  *  License along with this library; if not, write to the Free Software
  28  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29  *  MA  02111-1307  USA
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  31  *
  32  *  Sun Industry Standards Source License Version 1.1
  33  *  =================================================
  34  *  The contents of this file are subject to the Sun Industry Standards
  35  *  Source License Version 1.1 (the "License"); You may not use this file
  36  *  except in compliance with the License. You may obtain a copy of the
  37  *  License at http://www.openoffice.org/license.html.
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  39  *  Software provided under this License is provided on an "AS IS" basis,
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  43  *  See the License for the specific provisions governing your rights and
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  45  *
  46  *  The Initial Developer of the Original Code is: IBM Corporation
  47  *
  48  *  Copyright: 2008 by IBM Corporation
  49  *
  50  *  All Rights Reserved.
  51  *
  52  *  Contributor(s): _______________________________________
  53  *
  54  *
  55  ************************************************************************/
  56 /**
  57  * @file
  58  * For LWP filter architecture prototype
  59  * Implementation file of SdwRectangle.
  60  */
  61
  62 #include "lwpsdwrect.hxx"
  63 #include <cmath>
  64
  65 /**************************************************************************
  66  * @short:  Default constructor
  67 **************************************************************************/
  68 SdwRectangle::SdwRectangle()
  69     : m_bRotated(false)
  70     // m_nRectCorner array fields are default initialized with Point()
  71 {
  72 }
  73 /**************************************************************************
  74  * @short:  Constructor
  75  * @param:  aPt0~aPt3 four corner points of a rectangle.
  76 **************************************************************************/
  77 SdwRectangle::SdwRectangle(const Point& rPt0, const Point& rPt1,
  78         const Point& rPt2, const Point& rPt3)
  79     : m_bRotated(rPt0.Y() != rPt1.Y() || rPt0.Y() >= rPt3.Y())
  80     , m_nRectCorner({{rPt0, rPt1, rPt2, rPt3}})
  81 {
  82 }
  83
  84 /**************************************************************************
  85  * @short:  Calculate and return center point of the rectangle.
  86  * @return: center point
  87 **************************************************************************/
  88 Point SdwRectangle::GetRectCenter() const
  89 {
  90     tools::Long nX = static_cast<tools::Long>(static_cast<double>(m_nRectCorner[0].X() + m_nRectCorner[2].X())/2 + 0.5);
  91     tools::Long nY = static_cast<tools::Long>(static_cast<double>(m_nRectCorner[0].Y() + m_nRectCorner[2].Y())/2 + 0.5);
  92
  93     return Point(nX, nY);
  94 }
  95 /**************************************************************************
  96  * @short:  Calculate width of the rectangle.
  97  * @return: rectangle width.
  98 **************************************************************************/
  99 tools::Long SdwRectangle::GetWidth() const
 100 {
 101     tools::Long nX0 = m_nRectCorner[0].X();
 102     tools::Long nY0 = m_nRectCorner[0].Y();
 103     tools::Long nX1 = m_nRectCorner[1].X();
 104     tools::Long nY1 = m_nRectCorner[1].Y();
 105
 106     return static_cast<tools::Long>(CalcDistBetween2Points(nX0, nY0, nX1, nY1));
 107 }
 108 /**************************************************************************
 109  * @short:  Calculate height of the rectangle.
 110  * @return: rectangle height.
 111 **************************************************************************/
 112 tools::Long SdwRectangle::GetHeight() const
 113 {
 114     tools::Long nX1 = m_nRectCorner[1].X();
 115     tools::Long nY1 = m_nRectCorner[1].Y();
 116     tools::Long nX2 = m_nRectCorner[2].X();
 117     tools::Long nY2 = m_nRectCorner[2].Y();
 118
 119     return static_cast<tools::Long>(CalcDistBetween2Points(nX1, nY1, nX2, nY2));
 120 }
 121 /**************************************************************************
 122  * @short:  Calculate coordinate of the original rectangle.
 123  * @return: a prz rectangle
 124 **************************************************************************/
 125 tools::Rectangle SdwRectangle::GetOriginalRect() const
 126 {
 127     if (m_bRotated)
 128     {
 129         tools::Long nHeight = GetHeight();
 130         tools::Long nWidth = GetWidth();
 131         Point aCenter = GetRectCenter();
 132
 133         Point aLT(aCenter.X()-static_cast<tools::Long>(static_cast<double>(nWidth)/2+0.5),
 134             aCenter.Y()-static_cast<tools::Long>(static_cast<double>(nHeight)/2+0.5));
 135         Point aRB(aLT.X()+nWidth, aLT.Y()+nHeight);
 136
 137         return tools::Rectangle(aLT, aRB);
 138     }
 139     else
 140     {
 141         return tools::Rectangle(m_nRectCorner[3], m_nRectCorner[1]);
 142     }
 143 }
 144 /**************************************************************************
 145  * @short:  Calculate rotation angle of the rectangle.
 146  * @return: rotation angle.
 147 **************************************************************************/
 148 double SdwRectangle::GetRotationAngle() const
 149 {
 150     if (!m_bRotated)
 151     {
 152         return 0.00;
 153     }
 154
 155     double fX1 = static_cast<double>(m_nRectCorner[1].X());
 156     double fY1 = static_cast<double>(m_nRectCorner[1].Y());
 157     double fX2 = static_cast<double>(m_nRectCorner[2].X());
 158     double fY2 = static_cast<double>(m_nRectCorner[2].Y());
 159     double fMidX = (fX1 + fX2) / 2;
 160     double fMidY = (fY1 + fY2) / 2;
 161
 162     Point aCenter = GetRectCenter();
 163     double fCenterX = static_cast<double>(aCenter.X());
 164     double fCenterY = static_cast<double>(aCenter.Y());
 165
 166     double fAngle = atan2((fMidY - fCenterY), (fMidX - fCenterX));
 167
 168     return -fAngle;
 169 }
 170
 171 double SdwRectangle::CalcDistBetween2Points(tools::Long nX1, tools::Long nY1, tools::Long nX2, tools::Long nY2)
 172 {
 173     return std::hypot(nX1 - nX2, nY1 - nY2);
 174 }
 175
 176 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */