tools/source/generic/gen.cxx

   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 #include <sal/config.h>
  21 #include <rtl/string.hxx>
  22
  23 #include <algorithm>
  24 #include <tuple>
  25 #include <o3tl/hash_combine.hxx>
  26 #include <o3tl/safeint.hxx>
  27 #include <tools/gen.hxx>
  28
  29 OString Pair::toString() const
  30 {
  31     // Note that this is not just used for debugging output but the
  32     // format is parsed by external code (passed in callbacks to
  33     // LibreOfficeKit clients). So don't change.
  34     return OString::number(A()) + ", " + OString::number(B());
  35 }
  36
  37 size_t Pair::GetHashValue() const
  38 {
  39     size_t hash = 0;
  40     o3tl::hash_combine( hash, mnA );
  41     o3tl::hash_combine( hash, mnB );
  42     return hash;
  43 }
  44
  45 void RectangleTemplateBase::SaturatingSetSize(const SizeTemplateBase& rSize)
  46 {
  47     if (rSize.Width() < 0)
  48         mnRight = o3tl::saturating_add(mnLeft, (rSize.Width() + 1));
  49     else if ( rSize.Width() > 0 )
  50         mnRight = o3tl::saturating_add(mnLeft, (rSize.Width() - 1));
  51     else
  52         SetWidthEmpty();
  53
  54     if ( rSize.Height() < 0 )
  55         mnBottom = o3tl::saturating_add(mnTop, (rSize.Height() + 1));
  56     else if ( rSize.Height() > 0 )
  57         mnBottom = o3tl::saturating_add(mnTop, (rSize.Height() - 1));
  58     else
  59         SetHeightEmpty();
  60 }
  61
  62 void RectangleTemplateBase::SaturatingSetPosX(tools::Long x)
  63 {
  64     if (!IsWidthEmpty())
  65         mnRight = o3tl::saturating_add(mnRight, x - mnLeft);
  66     mnLeft = x;
  67 }
  68
  69 void RectangleTemplateBase::SaturatingSetPosY(tools::Long y)
  70 {
  71     if (!IsHeightEmpty())
  72         mnBottom = o3tl::saturating_add(mnBottom, y - mnTop);
  73     mnTop = y;
  74 }
  75
  76 void RectangleTemplateBase::Union( const RectangleTemplateBase& rRect )
  77 {
  78     if ( rRect.IsEmpty() )
  79         return;
  80
  81     if ( IsEmpty() )
  82         *this = rRect;
  83     else
  84     {
  85         std::tie(mnLeft, mnRight) = std::minmax({ mnLeft, rRect.mnLeft, mnRight, rRect.mnRight });
  86         std::tie(mnTop, mnBottom) = std::minmax({ mnTop, rRect.mnTop, mnBottom, rRect.mnBottom });
  87     }
  88 }
  89
  90 void RectangleTemplateBase::Intersection( const RectangleTemplateBase& rRect )
  91 {
  92     if ( IsEmpty() )
  93         return;
  94     if ( rRect.IsEmpty() )
  95     {
  96         *this = tools::Rectangle();
  97         return;
  98     }
  99
 100     // Normalize rectangle
 101     RectangleTemplateBase aTmpRect( rRect );
 102     Normalize();
 103     aTmpRect.Normalize();
 104
 105     // Perform intersection
 106     mnLeft  = std::max( mnLeft, aTmpRect.mnLeft );
 107     mnRight = std::min( mnRight, aTmpRect.mnRight );
 108     mnTop   = std::max( mnTop, aTmpRect.mnTop );
 109     mnBottom= std::min( mnBottom, aTmpRect.mnBottom );
 110
 111     // Determine if intersection is empty
 112     if ( mnRight < mnLeft || mnBottom < mnTop )
 113         *this = tools::Rectangle();
 114 }
 115
 116 void RectangleTemplateBase::Normalize()
 117 {
 118     if ((mnRight < mnLeft) && (!IsWidthEmpty()))
 119     {
 120         std::swap(mnLeft, mnRight);
 121     }
 122
 123     if ((mnBottom < mnTop) && (!IsHeightEmpty()))
 124     {
 125         std::swap(mnBottom, mnTop);
 126     }
 127 }
 128
 129 bool RectangleTemplateBase::Contains( const PointTemplateBase& rPoint ) const
 130 {
 131     if ( IsEmpty() )
 132         return false;
 133
 134     if ( mnLeft <= mnRight )
 135     {
 136         if ( (rPoint.X() < mnLeft) || (rPoint.X() > mnRight) )
 137             return false;
 138     }
 139     else
 140     {
 141         if ( (rPoint.X() > mnLeft) || (rPoint.X() < mnRight) )
 142             return false;
 143     }
 144     if ( mnTop <= mnBottom )
 145     {
 146         if ( (rPoint.Y() < mnTop) || (rPoint.Y() > mnBottom) )
 147             return false;
 148     }
 149     else
 150     {
 151         if ( (rPoint.Y() > mnTop) || (rPoint.Y() < mnBottom) )
 152             return false;
 153     }
 154     return true;
 155 }
 156
 157 bool RectangleTemplateBase::Contains( const RectangleTemplateBase& rRect ) const
 158 {
 159     return Contains( PointTemplateBase{ rRect.Left(), rRect.Top() } )
 160         && Contains( PointTemplateBase{ rRect.Right(), rRect.Bottom() } );
 161 }
 162
 163 bool RectangleTemplateBase::Overlaps( const RectangleTemplateBase& rRect ) const
 164 {
 165     // If there's no intersection, they don't overlap
 166     RectangleTemplateBase aTmp(*this);
 167     aTmp.Intersection(rRect);
 168     return !aTmp.IsEmpty();
 169 }
 170
 171 OString RectangleTemplateBase::toString() const
 172 {
 173     // Note that this is not just used for debugging output but the
 174     // format is parsed by external code (passed in callbacks to
 175     // LibreOfficeKit clients). So don't change.
 176     return OString::number(Left()) + ", "
 177             + OString::number(Top()) + ", "
 178             + OString::number(getOpenWidth()) + ", "
 179             + OString::number(getOpenHeight());
 180 }
 181
 182 void RectangleTemplateBase::expand(tools::Long nExpandBy)
 183 {
 184     AdjustLeft(-nExpandBy);
 185     AdjustTop(-nExpandBy);
 186     AdjustRight(nExpandBy);
 187     AdjustBottom(nExpandBy);
 188 }
 189
 190 void RectangleTemplateBase::shrink(tools::Long nShrinkBy)
 191 {
 192     mnLeft   += nShrinkBy;
 193     mnTop    += nShrinkBy;
 194     if (!IsWidthEmpty())
 195         mnRight -= nShrinkBy;
 196     if (!IsHeightEmpty())
 197         mnBottom -= nShrinkBy;
 198 }
 199
 200 tools::Long RectangleTemplateBase::AdjustRight(tools::Long nHorzMoveDelta)
 201 {
 202     if (IsWidthEmpty())
 203         mnRight = mnLeft + nHorzMoveDelta - 1;
 204     else
 205         mnRight += nHorzMoveDelta;
 206     return mnRight;
 207 }
 208
 209 tools::Long RectangleTemplateBase::AdjustBottom( tools::Long nVertMoveDelta )
 210 {
 211     if (IsHeightEmpty())
 212         mnBottom = mnTop + nVertMoveDelta - 1;
 213     else
 214         mnBottom += nVertMoveDelta;
 215     return mnBottom;
 216 }
 217
 218 static_assert( std::is_trivially_copyable< Pair >::value );
 219 static_assert( std::is_trivially_copyable< Point >::value );
 220 static_assert( std::is_trivially_copyable< Size >::value );
 221 static_assert( std::is_trivially_copyable< Range >::value );
 222 static_assert( std::is_trivially_copyable< Selection >::value );
 223 static_assert( std::is_trivially_copyable< tools::Rectangle >::value );
 224
 225 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */