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 <sal/log.hxx>
  22
  23 #include <algorithm>
  24 #include <cassert>
  25 #include <sstream>
  26 #include <o3tl/safeint.hxx>
  27 #include <tools/gen.hxx>
  28 #include <tools/stream.hxx>
  29
  30 OString Pair::toString() const
  31 {
  32     // Note that this is not just used for debugging output but the
  33     // format is parsed by external code (passed in callbacks to
  34     // LibreOfficeKit clients). So don't change.
  35     return OString::number(A()) + ", " + OString::number(B());
  36 }
  37
  38 void tools::Rectangle::SetSize( const Size& rSize )
  39 {
  40     if ( rSize.Width() < 0 )
  41         nRight  = nLeft + rSize.Width() +1;
  42     else if ( rSize.Width() > 0 )
  43         nRight  = nLeft + rSize.Width() -1;
  44     else
  45         SetWidthEmpty();
  46
  47     if ( rSize.Height() < 0 )
  48         nBottom  = nTop + rSize.Height() +1;
  49     else if ( rSize.Height() > 0 )
  50         nBottom  = nTop + rSize.Height() -1;
  51     else
  52         SetHeightEmpty();
  53 }
  54
  55 void tools::Rectangle::SaturatingSetSize(const Size& rSize)
  56 {
  57     if (rSize.Width() < 0)
  58         nRight = o3tl::saturating_add(nLeft, (rSize.Width() + 1));
  59     else if ( rSize.Width() > 0 )
  60         nRight = o3tl::saturating_add(nLeft, (rSize.Width() - 1));
  61     else
  62         SetWidthEmpty();
  63
  64     if ( rSize.Height() < 0 )
  65         nBottom = o3tl::saturating_add(nTop, (rSize.Height() + 1));
  66     else if ( rSize.Height() > 0 )
  67         nBottom = o3tl::saturating_add(nTop, (rSize.Height() - 1));
  68     else
  69         SetHeightEmpty();
  70 }
  71
  72 void tools::Rectangle::SaturatingSetPosX(tools::Long x)
  73 {
  74     if (!IsWidthEmpty())
  75         nRight = o3tl::saturating_add(nRight, x - nLeft);
  76     nLeft = x;
  77 }
  78
  79 void tools::Rectangle::SaturatingSetPosY(tools::Long y)
  80 {
  81     if (!IsHeightEmpty())
  82         nBottom = o3tl::saturating_add(nBottom, y - nTop);
  83     nTop = y;
  84 }
  85
  86 tools::Rectangle& tools::Rectangle::Union( const tools::Rectangle& rRect )
  87 {
  88     if ( rRect.IsEmpty() )
  89         return *this;
  90
  91     if ( IsEmpty() )
  92         *this = rRect;
  93     else
  94     {
  95         std::tie(nLeft, nRight) = std::minmax({ nLeft, rRect.nLeft, nRight, rRect.nRight });
  96         std::tie(nTop, nBottom) = std::minmax({ nTop, rRect.nTop, nBottom, rRect.nBottom });
  97     }
  98
  99     return *this;
 100 }
 101
 102 tools::Rectangle& tools::Rectangle::Intersection( const tools::Rectangle& rRect )
 103 {
 104     if ( IsEmpty() )
 105         return *this;
 106     if ( rRect.IsEmpty() )
 107     {
 108         *this = tools::Rectangle();
 109         return *this;
 110     }
 111
 112     // Justify rectangle
 113     tools::Rectangle aTmpRect( rRect );
 114     Justify();
 115     aTmpRect.Justify();
 116
 117     // Perform intersection
 118     nLeft  = std::max( nLeft, aTmpRect.nLeft );
 119     nRight = std::min( nRight, aTmpRect.nRight );
 120     nTop   = std::max( nTop, aTmpRect.nTop );
 121     nBottom= std::min( nBottom, aTmpRect.nBottom );
 122
 123     // Determine if intersection is empty
 124     if ( nRight < nLeft || nBottom < nTop )
 125         *this = tools::Rectangle();
 126
 127     return *this;
 128 }
 129
 130 void tools::Rectangle::Justify()
 131 {
 132     if ((nRight < nLeft) && (!IsWidthEmpty()))
 133     {
 134         std::swap(nLeft, nRight);
 135     }
 136
 137     if ((nBottom < nTop) && (!IsHeightEmpty()))
 138     {
 139         std::swap(nBottom, nTop);
 140     }
 141 }
 142
 143 bool tools::Rectangle::Contains( const Point& rPoint ) const
 144 {
 145     if ( IsEmpty() )
 146         return false;
 147
 148     if ( nLeft <= nRight )
 149     {
 150         if ( (rPoint.X() < nLeft) || (rPoint.X() > nRight) )
 151             return false;
 152     }
 153     else
 154     {
 155         if ( (rPoint.X() > nLeft) || (rPoint.X() < nRight) )
 156             return false;
 157     }
 158     if ( nTop <= nBottom )
 159     {
 160         if ( (rPoint.Y() < nTop) || (rPoint.Y() > nBottom) )
 161             return false;
 162     }
 163     else
 164     {
 165         if ( (rPoint.Y() > nTop) || (rPoint.Y() < nBottom) )
 166             return false;
 167     }
 168     return true;
 169 }
 170
 171 bool tools::Rectangle::Contains( const tools::Rectangle& rRect ) const
 172 {
 173     return Contains( rRect.TopLeft() ) && Contains( rRect.BottomRight() );
 174 }
 175
 176 bool tools::Rectangle::Overlaps( const tools::Rectangle& rRect ) const
 177 {
 178     // If there's no intersection, they don't overlap
 179     return !GetIntersection( rRect ).IsEmpty();
 180 }
 181
 182 OString tools::Rectangle::toString() const
 183 {
 184     // Note that this is not just used for debugging output but the
 185     // format is parsed by external code (passed in callbacks to
 186     // LibreOfficeKit clients). So don't change.
 187     return OString::number(Left()) + ", " + OString::number(Top()) + ", " + OString::number(getWidth()) + ", " + OString::number(getHeight());
 188 }
 189
 190 void tools::Rectangle::expand(tools::Long nExpandBy)
 191 {
 192     AdjustLeft(-nExpandBy);
 193     AdjustTop(-nExpandBy);
 194     AdjustRight(nExpandBy);
 195     AdjustBottom(nExpandBy);
 196 }
 197
 198 void tools::Rectangle::shrink(tools::Long nShrinkBy)
 199 {
 200     nLeft   += nShrinkBy;
 201     nTop    += nShrinkBy;
 202     if (!IsWidthEmpty())
 203         nRight -= nShrinkBy;
 204     if (!IsHeightEmpty())
 205         nBottom -= nShrinkBy;
 206 }
 207
 208 tools::Long tools::Rectangle::AdjustRight(tools::Long nHorzMoveDelta)
 209 {
 210     if (IsWidthEmpty())
 211         nRight = nLeft + nHorzMoveDelta - 1;
 212     else
 213         nRight += nHorzMoveDelta;
 214     return nRight;
 215 }
 216
 217 tools::Long tools::Rectangle::AdjustBottom( tools::Long nVertMoveDelta )
 218 {
 219     if (IsHeightEmpty())
 220         nBottom = nTop + nVertMoveDelta - 1;
 221     else
 222         nBottom += nVertMoveDelta;
 223     return nBottom;
 224 }
 225
 226 static_assert( std::is_trivially_copyable< Pair >::value );
 227 static_assert( std::is_trivially_copyable< Point >::value );
 228 static_assert( std::is_trivially_copyable< Size >::value );
 229 static_assert( std::is_trivially_copyable< Range >::value );
 230 static_assert( std::is_trivially_copyable< Selection >::value );
 231 static_assert( std::is_trivially_copyable< tools::Rectangle >::value );
 232
 233 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */