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  *
  21  *  This library is distributed in the hope that it will be useful,
  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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  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
  30  *
  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  * Change History
  58  *  Mar 2005            Revised for lwpfilter
  59  ****************************************************************************/
  60 /**
  61  * @file
  62  * For LWP filter architecture prototype
  63  * Implementation file of SdwRectangle.
  64  */
  65 #include "lwpsdwrect.hxx"
  66
  67 /**************************************************************************
  68  * @date:   11/19/2004
  69  * @short:  Default constructor
  70 **************************************************************************/
  71 SdwRectangle::SdwRectangle() : m_bRotated(sal_False)
  72 {
  73     for (sal_uInt16 i = 0; i < 4; i++)
  74     {
  75         m_nRectCorner[0] = Point(0, 0);
  76     }
  77 }
  78 /**************************************************************************
  79  * @date:   11/19/2004
  80  * @short:  Constructor
  81  * @param:  aPt0~aPt3 four corner points of a rectangle.
  82 **************************************************************************/
  83 SdwRectangle::SdwRectangle(const Point& rPt0, const Point& rPt1,
  84         const Point& rPt2, const Point& rPt3) : m_bRotated(sal_True)
  85 {
  86     m_nRectCorner[0] = rPt0;
  87     m_nRectCorner[1] = rPt1;
  88     m_nRectCorner[2] = rPt2;
  89     m_nRectCorner[3] = rPt3;
  90
  91     if (rPt0.Y() == rPt1.Y() && rPt0.Y() < rPt3.Y())
  92     {
  93         m_bRotated = sal_False;
  94     }
  95 }
  96
  97 /**************************************************************************
  98  * @date:   12/15/2004
  99  * @short:  Copy constructor
 100 **************************************************************************/
 101 SdwRectangle::SdwRectangle(const SdwRectangle& rOther)
 102 {
 103     m_nRectCorner[0] = rOther.m_nRectCorner[0];
 104     m_nRectCorner[1] = rOther.m_nRectCorner[1];
 105     m_nRectCorner[2] = rOther.m_nRectCorner[2];
 106     m_nRectCorner[3] = rOther.m_nRectCorner[3];
 107
 108     m_bRotated  = rOther.IsRectRotated();
 109 }
 110 /**************************************************************************
 111  * @date:   11/19/2004
 112  * @short:  Destructor
 113 **************************************************************************/
 114 SdwRectangle::~SdwRectangle()
 115 {
 116 }
 117 /**************************************************************************
 118  * @date:   11/19/2004
 119  * @short:  Get the flag whether if the rectangle has been rotated.
 120  * @return: m_bRotated rotation flag.
 121 **************************************************************************/
 122 sal_Bool SdwRectangle::IsRectRotated() const
 123 {
 124     return m_bRotated;
 125 }
 126 /**************************************************************************
 127  * @date:   11/19/2004
 128  * @short:  Calculate and return center point of the rectangle.
 129  * @return: center point
 130 **************************************************************************/
 131 Point SdwRectangle::GetRectCenter() const
 132 {
 133     long nX = (long)((double)(m_nRectCorner[0].X() + m_nRectCorner[2].X())/2 + 0.5);
 134     long nY = (long)((double)(m_nRectCorner[0].Y() + m_nRectCorner[2].Y())/2 + 0.5);
 135
 136     return Point(nX, nY);
 137 }
 138 /**************************************************************************
 139  * @date:   11/19/2004
 140  * @short:  Calculate width of the rectangle.
 141  * @return: rectangle width.
 142 **************************************************************************/
 143 long SdwRectangle::GetWidth() const
 144 {
 145     long nX0 = m_nRectCorner[0].X();
 146     long nY0 = m_nRectCorner[0].Y();
 147     long nX1 = m_nRectCorner[1].X();
 148     long nY1 = m_nRectCorner[1].Y();
 149
 150     return (long)CalcDistBetween2Points(nX0, nY0, nX1, nY1);
 151 }
 152 /**************************************************************************
 153  * @date:   11/19/2004
 154  * @short:  Calculate height of the rectangle.
 155  * @return: rectangle height.
 156 **************************************************************************/
 157 long SdwRectangle::GetHeight() const
 158 {
 159     long nX1 = m_nRectCorner[1].X();
 160     long nY1 = m_nRectCorner[1].Y();
 161     long nX2 = m_nRectCorner[2].X();
 162     long nY2 = m_nRectCorner[2].Y();
 163
 164     return (long)CalcDistBetween2Points(nX1, nY1, nX2, nY2);
 165 }
 166 /**************************************************************************
 167  * @date:   11/19/2004
 168  * @short:  Calculate coordinate of the original rectangle.
 169  * @return: a prz rectangle
 170 **************************************************************************/
 171 Rectangle SdwRectangle::GetOriginalRect() const
 172 {
 173     if (m_bRotated)
 174     {
 175         long nHeight = GetHeight();
 176         long nWidth = GetWidth();
 177         Point aCenter = GetRectCenter();
 178
 179         Point aLT(aCenter.X()-(long)((double)nWidth/2+0.5),
 180             aCenter.Y()-(long)((double)nHeight/2+0.5));
 181         Point aRB(aLT.X()+nWidth, aLT.Y()+nHeight);
 182
 183         return Rectangle(aLT, aRB);
 184     }
 185     else
 186     {
 187         return Rectangle(m_nRectCorner[3], m_nRectCorner[1]);
 188     }
 189 }
 190 /**************************************************************************
 191  * @date:   11/19/2004
 192  * @short:  Calculate rotation angle of the rectangle.
 193  * @return: rotation angle.
 194 **************************************************************************/
 195 double SdwRectangle::GetRotationAngle() const
 196 {
 197     if (!m_bRotated)
 198     {
 199         return 0.00;
 200     }
 201
 202     double fX1 = (double)(m_nRectCorner[1].X());
 203     double fY1 = (double)(m_nRectCorner[1].Y());
 204     double fX2 = (double)(m_nRectCorner[2].X());
 205     double fY2 = (double)(m_nRectCorner[2].Y());
 206     double fMidX = (fX1 + fX2) / 2;
 207     double fMidY = (fY1 + fY2) / 2;
 208
 209     Point aCenter = GetRectCenter();
 210     double fCenterX = (double)aCenter.X();
 211     double fCenterY = (double)aCenter.Y();
 212
 213     double fAngle = atan2((fMidY - fCenterY), (fMidX - fCenterX));
 214
 215     return -fAngle;
 216 }
 217
 218 double SdwRectangle::CalcDistBetween2Points(long nX1, long nY1, long nX2, long nY2)
 219 {
 220     return sqrt((double)((nX1-nX2)*(nX1-nX2) + (nY1-nY2)*(nY1-nY2)));
 221 }
 222
 223 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */