vcl/source/gdi/lineinfo.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 <tools/stream.hxx>
  21 #include <tools/vcompat.hxx>
  22 #include <vcl/lineinfo.hxx>
  23 #include <basegfx/polygon/b2dpolypolygon.hxx>
  24 #include <basegfx/polygon/b2dpolygontools.hxx>
  25 #include <basegfx/polygon/b2dlinegeometry.hxx>
  26 #include <numeric>
  27
  28
  29 ImplLineInfo::ImplLineInfo()
  30     : mnWidth(0)
  31     , mnDashLen(0)
  32     , mnDotLen(0)
  33     , mnDistance(0)
  34     , meLineJoin(basegfx::B2DLineJoin::Round)
  35     , meLineCap(css::drawing::LineCap_BUTT)
  36     , meStyle(LineStyle::Solid)
  37     , mnDashCount(0)
  38     , mnDotCount(0)
  39 {
  40 }
  41
  42 inline bool ImplLineInfo::operator==( const ImplLineInfo& rB ) const
  43 {
  44     return(meStyle == rB.meStyle
  45         && mnWidth == rB.mnWidth
  46         && mnDashCount == rB.mnDashCount
  47         && mnDashLen == rB.mnDashLen
  48         && mnDotCount == rB.mnDotCount
  49         && mnDotLen == rB.mnDotLen
  50         && mnDistance == rB.mnDistance
  51         && meLineJoin == rB.meLineJoin
  52         && meLineCap == rB.meLineCap);
  53 }
  54
  55
  56 LineInfo::LineInfo( LineStyle eStyle, sal_Int32 nWidth ) : mpImplLineInfo()
  57 {
  58     mpImplLineInfo->meStyle = eStyle;
  59     mpImplLineInfo->mnWidth = nWidth;
  60 }
  61
  62 LineInfo::LineInfo( const LineInfo& ) = default;
  63
  64 LineInfo::LineInfo( LineInfo&& ) = default;
  65
  66 LineInfo::~LineInfo() = default;
  67
  68 LineInfo& LineInfo::operator=( const LineInfo& ) = default;
  69
  70 LineInfo& LineInfo::operator=( LineInfo&& ) = default;
  71
  72 bool LineInfo::operator==( const LineInfo& rLineInfo ) const
  73 {
  74     return mpImplLineInfo == rLineInfo.mpImplLineInfo;
  75 }
  76
  77 void LineInfo::SetStyle( LineStyle eStyle )
  78 {
  79     mpImplLineInfo->meStyle = eStyle;
  80 }
  81
  82 void LineInfo::SetWidth( sal_Int32 nWidth )
  83 {
  84     mpImplLineInfo->mnWidth = nWidth;
  85 }
  86
  87 void LineInfo::SetDashCount( sal_uInt16 nDashCount )
  88 {
  89     mpImplLineInfo->mnDashCount = nDashCount;
  90 }
  91
  92 void LineInfo::SetDashLen( sal_Int32 nDashLen )
  93 {
  94     mpImplLineInfo->mnDashLen = nDashLen;
  95 }
  96
  97 void LineInfo::SetDotCount( sal_uInt16 nDotCount )
  98 {
  99     mpImplLineInfo->mnDotCount = nDotCount;
 100 }
 101
 102 void LineInfo::SetDotLen( sal_Int32 nDotLen )
 103 {
 104     mpImplLineInfo->mnDotLen = nDotLen;
 105 }
 106
 107 void LineInfo::SetDistance( sal_Int32 nDistance )
 108 {
 109     mpImplLineInfo->mnDistance = nDistance;
 110 }
 111
 112 void LineInfo::SetLineJoin(basegfx::B2DLineJoin eLineJoin)
 113 {
 114
 115     if(eLineJoin != mpImplLineInfo->meLineJoin)
 116     {
 117         mpImplLineInfo->meLineJoin = eLineJoin;
 118     }
 119 }
 120
 121 void LineInfo::SetLineCap(css::drawing::LineCap eLineCap)
 122 {
 123     if(eLineCap != mpImplLineInfo->meLineCap)
 124     {
 125         mpImplLineInfo->meLineCap = eLineCap;
 126     }
 127 }
 128
 129 bool LineInfo::IsDefault() const
 130 {
 131     return( !mpImplLineInfo->mnWidth
 132         && ( LineStyle::Solid == mpImplLineInfo->meStyle )
 133         && ( css::drawing::LineCap_BUTT == mpImplLineInfo->meLineCap));
 134 }
 135
 136 SvStream& ReadLineInfo( SvStream& rIStm, LineInfo& rLineInfo )
 137 {
 138     VersionCompat   aCompat( rIStm, StreamMode::READ );
 139     sal_uInt16          nTmp16(0);
 140     sal_Int32       nTmp32(0);
 141
 142     rIStm.ReadUInt16( nTmp16 ); rLineInfo.mpImplLineInfo->meStyle = static_cast<LineStyle>(nTmp16);
 143     rIStm.ReadInt32( nTmp32 );
 144     rLineInfo.mpImplLineInfo->mnWidth = nTmp32;
 145
 146     if( aCompat.GetVersion() >= 2 )
 147     {
 148         // version 2
 149         rIStm.ReadUInt16( rLineInfo.mpImplLineInfo->mnDashCount ).ReadInt32( nTmp32 );
 150         rLineInfo.mpImplLineInfo->mnDashLen = nTmp32;
 151         rIStm.ReadUInt16( rLineInfo.mpImplLineInfo->mnDotCount ).ReadInt32( nTmp32 );
 152         rLineInfo.mpImplLineInfo->mnDotLen = nTmp32;
 153         rIStm.ReadInt32( nTmp32 );
 154         rLineInfo.mpImplLineInfo->mnDistance = nTmp32;
 155     }
 156
 157     if( aCompat.GetVersion() >= 3 )
 158     {
 159         // version 3
 160         rIStm.ReadUInt16( nTmp16 ); rLineInfo.mpImplLineInfo->meLineJoin = static_cast<basegfx::B2DLineJoin>(nTmp16);
 161     }
 162
 163     if( aCompat.GetVersion() >= 4 )
 164     {
 165         // version 4
 166         rIStm.ReadUInt16( nTmp16 ); rLineInfo.mpImplLineInfo->meLineCap = static_cast<css::drawing::LineCap>(nTmp16);
 167     }
 168
 169     return rIStm;
 170 }
 171
 172 SvStream& WriteLineInfo( SvStream& rOStm, const LineInfo& rLineInfo )
 173 {
 174     VersionCompat aCompat( rOStm, StreamMode::WRITE, 4 );
 175
 176     // version 1
 177     rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meStyle) )
 178          .WriteInt32( rLineInfo.mpImplLineInfo->mnWidth );
 179
 180     // since version2
 181     rOStm.WriteUInt16( rLineInfo.mpImplLineInfo->mnDashCount )
 182          .WriteInt32( rLineInfo.mpImplLineInfo->mnDashLen );
 183     rOStm.WriteUInt16( rLineInfo.mpImplLineInfo->mnDotCount )
 184          .WriteInt32( rLineInfo.mpImplLineInfo->mnDotLen );
 185     rOStm.WriteInt32( rLineInfo.mpImplLineInfo->mnDistance );
 186
 187     // since version3
 188     rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meLineJoin) );
 189
 190     // since version4
 191     rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meLineCap) );
 192
 193     return rOStm;
 194 }
 195
 196 void LineInfo::applyToB2DPolyPolygon(
 197     basegfx::B2DPolyPolygon& io_rLinePolyPolygon,
 198     basegfx::B2DPolyPolygon& o_rFillPolyPolygon) const
 199 {
 200     o_rFillPolyPolygon.clear();
 201
 202     if(io_rLinePolyPolygon.count())
 203     {
 204         if(LineStyle::Dash == GetStyle())
 205         {
 206             ::std::vector< double > fDotDashArray;
 207             const double fDashLen(GetDashLen());
 208             const double fDotLen(GetDotLen());
 209             const double fDistance(GetDistance());
 210
 211             for(sal_uInt16 a(0); a < GetDashCount(); a++)
 212             {
 213                 fDotDashArray.push_back(fDashLen);
 214                 fDotDashArray.push_back(fDistance);
 215             }
 216
 217             for(sal_uInt16 b(0); b < GetDotCount(); b++)
 218             {
 219                 fDotDashArray.push_back(fDotLen);
 220                 fDotDashArray.push_back(fDistance);
 221             }
 222
 223             const double fAccumulated(::std::accumulate(fDotDashArray.begin(), fDotDashArray.end(), 0.0));
 224
 225             if(fAccumulated > 0.0)
 226             {
 227                 basegfx::B2DPolyPolygon aResult;
 228
 229                 for(auto const& rPolygon : io_rLinePolyPolygon)
 230                 {
 231                     basegfx::B2DPolyPolygon aLineTraget;
 232                     basegfx::utils::applyLineDashing(
 233                         rPolygon,
 234                         fDotDashArray,
 235                         &aLineTraget);
 236                     aResult.append(aLineTraget);
 237                 }
 238
 239                 io_rLinePolyPolygon = aResult;
 240             }
 241         }
 242
 243         if(GetWidth() > 1 && io_rLinePolyPolygon.count())
 244         {
 245             const double fHalfLineWidth((GetWidth() * 0.5) + 0.5);
 246
 247             for(auto const& rPolygon : io_rLinePolyPolygon)
 248             {
 249                 o_rFillPolyPolygon.append(basegfx::utils::createAreaGeometry(
 250                     rPolygon,
 251                     fHalfLineWidth,
 252                     GetLineJoin(),
 253                     GetLineCap()));
 254             }
 255
 256             io_rLinePolyPolygon.clear();
 257         }
 258     }
 259 }
 260
 261 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */