Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 304 insertions, 0 deletions

diff --git a/vcl/source/outdev/line.cxx b/vcl/source/outdev/line.cxx
new file mode 100644
index 000000000..f451b6e1f
--- /dev/null
+++ b/vcl/source/outdev/line.cxx
@@ -0,0 +1,304 @@
+/* -*- 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 <cassert>
+#include <numeric>
+
+#include <vcl/gdimtf.hxx>
+#include <vcl/lineinfo.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/virdev.hxx>
+
+#include <salgdi.hxx>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/polygon/b2dlinegeometry.hxx>
+
+void OutputDevice::DrawLine( const Point& rStartPt, const Point& rEndPt,
+                             const LineInfo& rLineInfo )
+{
+    assert(!is_double_buffered_window());
+
+    if ( rLineInfo.IsDefault() )
+    {
+        DrawLine( rStartPt, rEndPt );
+        return;
+    }
+
+    if ( mpMetaFile )
+        mpMetaFile->AddAction( new MetaLineAction( rStartPt, rEndPt, rLineInfo ) );
+
+    if ( !IsDeviceOutputNecessary() || !mbLineColor || ( LineStyle::NONE == rLineInfo.GetStyle() ) || ImplIsRecordLayout() )
+        return;
+
+    if( !mpGraphics && !AcquireGraphics() )
+        return;
+
+    if ( mbInitClipRegion )
+        InitClipRegion();
+
+    if ( mbOutputClipped )
+        return;
+
+    const Point aStartPt( ImplLogicToDevicePixel( rStartPt ) );
+    const Point aEndPt( ImplLogicToDevicePixel( rEndPt ) );
+    const LineInfo aInfo( ImplLogicToDevicePixel( rLineInfo ) );
+    const bool bDashUsed(LineStyle::Dash == aInfo.GetStyle());
+    const bool bLineWidthUsed(aInfo.GetWidth() > 1);
+
+    if ( mbInitLineColor )
+        InitLineColor();
+
+    if(bDashUsed || bLineWidthUsed)
+    {
+        basegfx::B2DPolygon aLinePolygon;
+        aLinePolygon.append(basegfx::B2DPoint(aStartPt.X(), aStartPt.Y()));
+        aLinePolygon.append(basegfx::B2DPoint(aEndPt.X(), aEndPt.Y()));
+
+        drawLine( basegfx::B2DPolyPolygon(aLinePolygon), aInfo );
+    }
+    else
+    {
+        mpGraphics->DrawLine( aStartPt.X(), aStartPt.Y(), aEndPt.X(), aEndPt.Y(), this );
+    }
+
+    if( mpAlphaVDev )
+        mpAlphaVDev->DrawLine( rStartPt, rEndPt, rLineInfo );
+}
+
+void OutputDevice::DrawLine( const Point& rStartPt, const Point& rEndPt )
+{
+    assert(!is_double_buffered_window());
+
+    if ( mpMetaFile )
+        mpMetaFile->AddAction( new MetaLineAction( rStartPt, rEndPt ) );
+
+    if ( !IsDeviceOutputNecessary() || !mbLineColor || ImplIsRecordLayout() )
+        return;
+
+    if ( !mpGraphics && !AcquireGraphics() )
+        return;
+
+    if ( mbInitClipRegion )
+        InitClipRegion();
+
+    if ( mbOutputClipped )
+        return;
+
+    if ( mbInitLineColor )
+        InitLineColor();
+
+    // #i101598# support AA and snap for lines, too
+    if((mnAntialiasing & AntialiasingFlags::EnableB2dDraw)
+        && mpGraphics->supportsOperation(OutDevSupportType::B2DDraw)
+        && RasterOp::OverPaint == GetRasterOp()
+        && IsLineColor())
+    {
+        // at least transform with double precision to device coordinates; this will
+        // avoid pixel snap of single, appended lines
+        const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+        basegfx::B2DPolygon aB2DPolyLine;
+
+        aB2DPolyLine.append(basegfx::B2DPoint(rStartPt.X(), rStartPt.Y()));
+        aB2DPolyLine.append(basegfx::B2DPoint(rEndPt.X(), rEndPt.Y()));
+        aB2DPolyLine.transform( aTransform );
+
+        const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+        if( mpGraphics->DrawPolyLine(
+            basegfx::B2DHomMatrix(),
+            aB2DPolyLine,
+            0.0,
+            0.0, // tdf#124848 hairline
+            nullptr, // MM01
+            basegfx::B2DLineJoin::NONE,
+            css::drawing::LineCap_BUTT,
+            basegfx::deg2rad(15.0), // not used with B2DLineJoin::NONE, but the correct default
+            bPixelSnapHairline,
+            this))
+        {
+            return;
+        }
+    }
+
+    const Point aStartPt(ImplLogicToDevicePixel(rStartPt));
+    const Point aEndPt(ImplLogicToDevicePixel(rEndPt));
+
+    mpGraphics->DrawLine( aStartPt.X(), aStartPt.Y(), aEndPt.X(), aEndPt.Y(), this );
+
+    if( mpAlphaVDev )
+        mpAlphaVDev->DrawLine( rStartPt, rEndPt );
+}
+
+void OutputDevice::drawLine( basegfx::B2DPolyPolygon aLinePolyPolygon, const LineInfo& rInfo )
+{
+    const bool bTryAA((mnAntialiasing & AntialiasingFlags::EnableB2dDraw)
+        && mpGraphics->supportsOperation(OutDevSupportType::B2DDraw)
+        && RasterOp::OverPaint == GetRasterOp()
+        && IsLineColor());
+    basegfx::B2DPolyPolygon aFillPolyPolygon;
+    const bool bDashUsed(LineStyle::Dash == rInfo.GetStyle());
+    const bool bLineWidthUsed(rInfo.GetWidth() > 1);
+
+    if(bDashUsed && aLinePolyPolygon.count())
+    {
+        ::std::vector< double > fDotDashArray;
+        const double fDashLen(rInfo.GetDashLen());
+        const double fDotLen(rInfo.GetDotLen());
+        const double fDistance(rInfo.GetDistance());
+
+        for(sal_uInt16 a(0); a < rInfo.GetDashCount(); a++)
+        {
+            fDotDashArray.push_back(fDashLen);
+            fDotDashArray.push_back(fDistance);
+        }
+
+        for(sal_uInt16 b(0); b < rInfo.GetDotCount(); b++)
+        {
+            fDotDashArray.push_back(fDotLen);
+            fDotDashArray.push_back(fDistance);
+        }
+
+        const double fAccumulated(::std::accumulate(fDotDashArray.begin(), fDotDashArray.end(), 0.0));
+
+        if(fAccumulated > 0.0)
+        {
+            basegfx::B2DPolyPolygon aResult;
+
+            for(auto const& rPolygon : aLinePolyPolygon)
+            {
+                basegfx::B2DPolyPolygon aLineTarget;
+                basegfx::utils::applyLineDashing(
+                    rPolygon,
+                    fDotDashArray,
+                    &aLineTarget);
+                aResult.append(aLineTarget);
+            }
+
+            aLinePolyPolygon = aResult;
+        }
+    }
+
+    if(bLineWidthUsed && aLinePolyPolygon.count())
+    {
+        const double fHalfLineWidth((rInfo.GetWidth() * 0.5) + 0.5);
+
+        if(aLinePolyPolygon.areControlPointsUsed())
+        {
+            // #i110768# When area geometry has to be created, do not
+            // use the fallback bezier decomposition inside createAreaGeometry,
+            // but one that is at least as good as ImplSubdivideBezier was.
+            // There, Polygon::AdaptiveSubdivide was used with default parameter
+            // 1.0 as quality index.
+            aLinePolyPolygon = basegfx::utils::adaptiveSubdivideByDistance(aLinePolyPolygon, 1.0);
+        }
+
+        for(auto const& rPolygon : aLinePolyPolygon)
+        {
+            aFillPolyPolygon.append(basegfx::utils::createAreaGeometry(
+                rPolygon,
+                fHalfLineWidth,
+                rInfo.GetLineJoin(),
+                rInfo.GetLineCap()));
+        }
+
+        aLinePolyPolygon.clear();
+    }
+
+    GDIMetaFile* pOldMetaFile = mpMetaFile;
+    mpMetaFile = nullptr;
+
+    if(aLinePolyPolygon.count())
+    {
+        for(auto const& rB2DPolygon : aLinePolyPolygon)
+        {
+            const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+            bool bDone(false);
+
+            if(bTryAA)
+            {
+                bDone = mpGraphics->DrawPolyLine(
+                    basegfx::B2DHomMatrix(),
+                    rB2DPolygon,
+                    0.0,
+                    0.0, // tdf#124848 hairline
+                    nullptr, // MM01
+                    basegfx::B2DLineJoin::NONE,
+                    css::drawing::LineCap_BUTT,
+                    basegfx::deg2rad(15.0), // not used with B2DLineJoin::NONE, but the correct default
+                    bPixelSnapHairline,
+                    this);
+            }
+
+            if(!bDone)
+            {
+                tools::Polygon aPolygon(rB2DPolygon);
+                mpGraphics->DrawPolyLine(
+                    aPolygon.GetSize(),
+                    reinterpret_cast<SalPoint*>(aPolygon.GetPointAry()),
+                    this);
+            }
+        }
+    }
+
+    if(aFillPolyPolygon.count())
+    {
+        const Color     aOldLineColor( maLineColor );
+        const Color     aOldFillColor( maFillColor );
+
+        SetLineColor();
+        InitLineColor();
+        SetFillColor( aOldLineColor );
+        InitFillColor();
+
+        bool bDone(false);
+
+        if(bTryAA)
+        {
+            bDone = mpGraphics->DrawPolyPolygon(
+                basegfx::B2DHomMatrix(),
+                aFillPolyPolygon,
+                0.0,
+                this);
+        }
+
+        if(!bDone)
+        {
+            for(auto const& rB2DPolygon : aFillPolyPolygon)
+            {
+                tools::Polygon aPolygon(rB2DPolygon);
+
+                // need to subdivide, mpGraphics->DrawPolygon ignores curves
+                aPolygon.AdaptiveSubdivide(aPolygon);
+                mpGraphics->DrawPolygon(aPolygon.GetSize(), reinterpret_cast<const SalPoint*>(aPolygon.GetConstPointAry()), this);
+            }
+        }
+
+        SetFillColor( aOldFillColor );
+        SetLineColor( aOldLineColor );
+    }
+
+    mpMetaFile = pOldMetaFile;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */