1 files changed, 293 insertions, 0 deletions
diff --git a/vcl/source/gdi/lineinfo.cxx b/vcl/source/gdi/lineinfo.cxx
new file mode 100644
index 0000000000..490b1d920d
--- /dev/null
+++ b/vcl/source/gdi/lineinfo.cxx
@@ -0,0 +1,293 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/log.hxx>
+#include <tools/stream.hxx>
+#include <tools/vcompat.hxx>
+#include <vcl/lineinfo.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dlinegeometry.hxx>
+#include <numeric>
+
+
+ImplLineInfo::ImplLineInfo()
+    : mnWidth(0)
+    , mnDashLen(0)
+    , mnDotLen(0)
+    , mnDistance(0)
+    , meLineJoin(basegfx::B2DLineJoin::Round)
+    , meLineCap(css::drawing::LineCap_BUTT)
+    , meStyle(LineStyle::Solid)
+    , mnDashCount(0)
+    , mnDotCount(0)
+{
+}
+
+inline bool ImplLineInfo::operator==( const ImplLineInfo& rB ) const
+{
+    return(meStyle == rB.meStyle
+        && mnWidth == rB.mnWidth
+        && mnDashCount == rB.mnDashCount
+        && mnDashLen == rB.mnDashLen
+        && mnDotCount == rB.mnDotCount
+        && mnDotLen == rB.mnDotLen
+        && mnDistance == rB.mnDistance
+        && meLineJoin == rB.meLineJoin
+        && meLineCap == rB.meLineCap);
+}
+
+
+LineInfo::LineInfo( LineStyle eStyle, double nWidth )
+{
+    mpImplLineInfo->meStyle = eStyle;
+    mpImplLineInfo->mnWidth = nWidth;
+}
+
+LineInfo::LineInfo( const LineInfo& ) = default;
+
+LineInfo::LineInfo( LineInfo&& ) = default;
+
+LineInfo::~LineInfo() = default;
+
+LineInfo& LineInfo::operator=( const LineInfo& ) = default;
+
+LineInfo& LineInfo::operator=( LineInfo&& ) = default;
+
+bool LineInfo::operator==( const LineInfo& rLineInfo ) const
+{
+    return mpImplLineInfo == rLineInfo.mpImplLineInfo;
+}
+
+void LineInfo::SetStyle( LineStyle eStyle )
+{
+    mpImplLineInfo->meStyle = eStyle;
+}
+
+void LineInfo::SetWidth( double nWidth )
+{
+    mpImplLineInfo->mnWidth = nWidth;
+}
+
+void LineInfo::SetDashCount( sal_uInt16 nDashCount )
+{
+    mpImplLineInfo->mnDashCount = nDashCount;
+}
+
+void LineInfo::SetDashLen( double nDashLen )
+{
+    mpImplLineInfo->mnDashLen = nDashLen;
+}
+
+void LineInfo::SetDotCount( sal_uInt16 nDotCount )
+{
+    mpImplLineInfo->mnDotCount = nDotCount;
+}
+
+void LineInfo::SetDotLen( double nDotLen )
+{
+    mpImplLineInfo->mnDotLen = nDotLen;
+}
+
+void LineInfo::SetDistance( double nDistance )
+{
+    mpImplLineInfo->mnDistance = nDistance;
+}
+
+void LineInfo::SetLineJoin(basegfx::B2DLineJoin eLineJoin)
+{
+    mpImplLineInfo->meLineJoin = eLineJoin;
+}
+
+void LineInfo::SetLineCap(css::drawing::LineCap eLineCap)
+{
+    mpImplLineInfo->meLineCap = eLineCap;
+}
+
+bool LineInfo::IsDefault() const
+{
+    return( !mpImplLineInfo->mnWidth
+        && ( LineStyle::Solid == mpImplLineInfo->meStyle )
+        && ( css::drawing::LineCap_BUTT == mpImplLineInfo->meLineCap));
+}
+
+static void ReadLimitedDouble(SvStream& rIStm, double &fDest)
+{
+    double fTmp(0.0);
+    rIStm.ReadDouble(fTmp);
+    if (!std::isfinite(fTmp) || fTmp < std::numeric_limits<sal_Int32>::min() || fTmp > std::numeric_limits<sal_Int32>::max())
+    {
+        SAL_WARN("vcl", "Parsing error: out of range double: " << fTmp);
+        return;
+    }
+    fDest = fTmp;
+}
+
+SvStream& ReadLineInfo( SvStream& rIStm, LineInfo& rLineInfo )
+{
+    VersionCompatRead aCompat( rIStm );
+    sal_uInt16          nTmp16(0);
+    sal_Int32       nTmp32(0);
+
+    rIStm.ReadUInt16( nTmp16 );
+    rLineInfo.mpImplLineInfo->meStyle = static_cast<LineStyle>(nTmp16);
+    rIStm.ReadInt32( nTmp32 );
+    rLineInfo.mpImplLineInfo->mnWidth = nTmp32;
+
+    if( aCompat.GetVersion() >= 2 )
+    {
+        // version 2
+        rIStm.ReadUInt16( rLineInfo.mpImplLineInfo->mnDashCount ).ReadInt32( nTmp32 );
+        rLineInfo.mpImplLineInfo->mnDashLen = nTmp32;
+        rIStm.ReadUInt16( rLineInfo.mpImplLineInfo->mnDotCount ).ReadInt32( nTmp32 );
+        rLineInfo.mpImplLineInfo->mnDotLen = nTmp32;
+        rIStm.ReadInt32( nTmp32 );
+        rLineInfo.mpImplLineInfo->mnDistance = nTmp32;
+    }
+
+    if( aCompat.GetVersion() >= 3 )
+    {
+        // version 3
+        rIStm.ReadUInt16( nTmp16 );
+        rLineInfo.mpImplLineInfo->meLineJoin = static_cast<basegfx::B2DLineJoin>(nTmp16);
+    }
+
+    if( aCompat.GetVersion() >= 4 )
+    {
+        // version 4
+        rIStm.ReadUInt16( nTmp16 );
+        rLineInfo.mpImplLineInfo->meLineCap = static_cast<css::drawing::LineCap>(nTmp16);
+    }
+
+    if( aCompat.GetVersion() >= 5 )
+    {
+        // version 5
+        ReadLimitedDouble(rIStm, rLineInfo.mpImplLineInfo->mnWidth);
+        ReadLimitedDouble(rIStm, rLineInfo.mpImplLineInfo->mnDashLen);
+        ReadLimitedDouble(rIStm, rLineInfo.mpImplLineInfo->mnDotLen);
+        ReadLimitedDouble(rIStm, rLineInfo.mpImplLineInfo->mnDistance);
+    }
+
+    return rIStm;
+}
+
+SvStream& WriteLineInfo( SvStream& rOStm, const LineInfo& rLineInfo )
+{
+    VersionCompatWrite aCompat( rOStm, 5 );
+
+    // version 1
+    rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meStyle) )
+         .WriteInt32( basegfx::fround( rLineInfo.mpImplLineInfo->mnWidth ));
+
+    // since version2
+    rOStm.WriteUInt16( rLineInfo.mpImplLineInfo->mnDashCount )
+         .WriteInt32( basegfx::fround( rLineInfo.mpImplLineInfo->mnDashLen ));
+    rOStm.WriteUInt16( rLineInfo.mpImplLineInfo->mnDotCount )
+         .WriteInt32( basegfx::fround( rLineInfo.mpImplLineInfo->mnDotLen ));
+    rOStm.WriteInt32( basegfx::fround( rLineInfo.mpImplLineInfo->mnDistance ));
+
+    // since version3
+    rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meLineJoin) );
+
+    // since version4
+    rOStm.WriteUInt16( static_cast<sal_uInt16>(rLineInfo.mpImplLineInfo->meLineCap) );
+
+    // since version5
+    rOStm.WriteDouble( rLineInfo.mpImplLineInfo->mnWidth );
+    rOStm.WriteDouble( rLineInfo.mpImplLineInfo->mnDashLen );
+    rOStm.WriteDouble( rLineInfo.mpImplLineInfo->mnDotLen );
+    rOStm.WriteDouble( rLineInfo.mpImplLineInfo->mnDistance );
+
+    return rOStm;
+}
+
+std::vector< double > LineInfo::GetDotDashArray() const
+{
+    ::std::vector< double > fDotDashArray;
+    if ( GetStyle() != LineStyle::Dash )
+        return fDotDashArray;
+
+    const double fDashLen(GetDashLen());
+    const double fDotLen(GetDotLen());
+    const double fDistance(GetDistance());
+
+    for(sal_uInt16 a(0); a < GetDashCount(); a++)
+    {
+        fDotDashArray.push_back(fDashLen);
+        fDotDashArray.push_back(fDistance);
+    }
+
+    for(sal_uInt16 b(0); b < GetDotCount(); b++)
+    {
+        fDotDashArray.push_back(fDotLen);
+        fDotDashArray.push_back(fDistance);
+    }
+    return fDotDashArray;
+}
+
+void LineInfo::applyToB2DPolyPolygon(
+    basegfx::B2DPolyPolygon& io_rLinePolyPolygon,
+    basegfx::B2DPolyPolygon& o_rFillPolyPolygon) const
+{
+    o_rFillPolyPolygon.clear();
+
+    if(!io_rLinePolyPolygon.count())
+        return;
+
+    if(LineStyle::Dash == GetStyle())
+    {
+        ::std::vector< double > fDotDashArray = GetDotDashArray();
+        const double fAccumulated(::std::accumulate(fDotDashArray.begin(), fDotDashArray.end(), 0.0));
+
+        if(fAccumulated > 0.0)
+        {
+            basegfx::B2DPolyPolygon aResult;
+
+            for(auto const& rPolygon : std::as_const(io_rLinePolyPolygon))
+            {
+                basegfx::B2DPolyPolygon aLineTarget;
+                basegfx::utils::applyLineDashing(
+                    rPolygon,
+                    fDotDashArray,
+                    &aLineTarget);
+                aResult.append(aLineTarget);
+            }
+
+            io_rLinePolyPolygon = aResult;
+        }
+    }
+
+    if(!(GetWidth() > 1 && io_rLinePolyPolygon.count()))
+        return;
+
+    const double fHalfLineWidth((GetWidth() * 0.5) + 0.5);
+
+    for(auto const& rPolygon : std::as_const(io_rLinePolyPolygon))
+    {
+        o_rFillPolyPolygon.append(basegfx::utils::createAreaGeometry(
+            rPolygon,
+            fHalfLineWidth,
+            GetLineJoin(),
+            GetLineCap()));
+    }
+
+    io_rLinePolyPolygon.clear();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */