Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

1 files changed, 518 insertions, 0 deletions

diff --git a/vcl/source/outdev/polygon.cxx b/vcl/source/outdev/polygon.cxx
new file mode 100644
index 000000000..772c2dbde
--- /dev/null
+++ b/vcl/source/outdev/polygon.cxx
@@ -0,0 +1,518 @@
+/* -*- 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 <sal/types.h>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <memory>
+#include <tools/poly.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/virdev.hxx>
+
+#include <salgdi.hxx>
+
+#define OUTDEV_POLYPOLY_STACKBUF        32
+
+void OutputDevice::DrawPolyPolygon( const tools::PolyPolygon& rPolyPoly )
+{
+    assert(!is_double_buffered_window());
+
+    if( mpMetaFile )
+        mpMetaFile->AddAction( new MetaPolyPolygonAction( rPolyPoly ) );
+
+    sal_uInt16 nPoly = rPolyPoly.Count();
+
+    if ( !IsDeviceOutputNecessary() || (!mbLineColor && !mbFillColor) || !nPoly || ImplIsRecordLayout() )
+        return;
+
+    // we need a graphics
+    if ( !mpGraphics && !AcquireGraphics() )
+        return;
+    assert(mpGraphics);
+
+    if ( mbInitClipRegion )
+        InitClipRegion();
+
+    if ( mbOutputClipped )
+        return;
+
+    if ( mbInitLineColor )
+        InitLineColor();
+
+    if ( mbInitFillColor )
+        InitFillColor();
+
+    // use b2dpolygon drawing if possible
+    if(mpGraphics->supportsOperation(OutDevSupportType::B2DDraw) &&
+       RasterOp::OverPaint == GetRasterOp() &&
+       (IsLineColor() || IsFillColor()))
+    {
+        const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+        basegfx::B2DPolyPolygon aB2DPolyPolygon(rPolyPoly.getB2DPolyPolygon());
+        bool bSuccess(true);
+
+        // ensure closed - may be asserted, will prevent buffering
+        if(!aB2DPolyPolygon.isClosed())
+        {
+            aB2DPolyPolygon.setClosed(true);
+        }
+
+        if(IsFillColor())
+        {
+            bSuccess = mpGraphics->DrawPolyPolygon(
+                aTransform,
+                aB2DPolyPolygon,
+                0.0,
+                *this);
+        }
+
+        if(bSuccess && IsLineColor())
+        {
+            const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+            for(auto const& rPolygon : std::as_const(aB2DPolyPolygon))
+            {
+                bSuccess = mpGraphics->DrawPolyLine(
+                    aTransform,
+                    rPolygon,
+                    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 (!bSuccess)
+                    break;
+            }
+        }
+
+        if(bSuccess)
+        {
+            if( mpAlphaVDev )
+                mpAlphaVDev->DrawPolyPolygon( rPolyPoly );
+            return;
+        }
+    }
+
+    if ( nPoly == 1 )
+    {
+        // #100127# Map to DrawPolygon
+        const tools::Polygon& aPoly = rPolyPoly.GetObject( 0 );
+        if( aPoly.GetSize() >= 2 )
+        {
+            GDIMetaFile* pOldMF = mpMetaFile;
+            mpMetaFile = nullptr;
+
+            DrawPolygon( aPoly );
+
+            mpMetaFile = pOldMF;
+        }
+    }
+    else
+    {
+        // #100127# moved real tools::PolyPolygon draw to separate method,
+        // have to call recursively, avoiding duplicate
+        // ImplLogicToDevicePixel calls
+        ImplDrawPolyPolygon( nPoly, ImplLogicToDevicePixel( rPolyPoly ) );
+    }
+    if( mpAlphaVDev )
+        mpAlphaVDev->DrawPolyPolygon( rPolyPoly );
+}
+
+void OutputDevice::DrawPolygon( const basegfx::B2DPolygon& rB2DPolygon)
+{
+    assert(!is_double_buffered_window());
+
+    // AW: Do NOT paint empty polygons
+    if(rB2DPolygon.count())
+    {
+        basegfx::B2DPolyPolygon aPP( rB2DPolygon );
+        DrawPolyPolygon( aPP );
+    }
+}
+
+void OutputDevice::DrawPolygon( const tools::Polygon& rPoly )
+{
+    assert(!is_double_buffered_window());
+
+    if( mpMetaFile )
+        mpMetaFile->AddAction( new MetaPolygonAction( rPoly ) );
+
+    sal_uInt16 nPoints = rPoly.GetSize();
+
+    if ( !IsDeviceOutputNecessary() || (!mbLineColor && !mbFillColor) || (nPoints < 2) || ImplIsRecordLayout() )
+        return;
+
+    // we need a graphics
+    if ( !mpGraphics && !AcquireGraphics() )
+        return;
+    assert(mpGraphics);
+
+    if ( mbInitClipRegion )
+        InitClipRegion();
+
+    if ( mbOutputClipped )
+        return;
+
+    if ( mbInitLineColor )
+        InitLineColor();
+
+    if ( mbInitFillColor )
+        InitFillColor();
+
+    // use b2dpolygon drawing if possible
+    if(mpGraphics->supportsOperation(OutDevSupportType::B2DDraw) &&
+       RasterOp::OverPaint == GetRasterOp() &&
+       (IsLineColor() || IsFillColor()))
+    {
+        const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+        basegfx::B2DPolygon aB2DPolygon(rPoly.getB2DPolygon());
+        bool bSuccess(true);
+
+        // ensure closed - maybe assert, hinders buffering
+        if(!aB2DPolygon.isClosed())
+        {
+            aB2DPolygon.setClosed(true);
+        }
+
+        if(IsFillColor())
+        {
+            bSuccess = mpGraphics->DrawPolyPolygon(
+                aTransform,
+                basegfx::B2DPolyPolygon(aB2DPolygon),
+                0.0,
+                *this);
+        }
+
+        if(bSuccess && IsLineColor())
+        {
+            const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+            bSuccess = mpGraphics->DrawPolyLine(
+                aTransform,
+                aB2DPolygon,
+                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(bSuccess)
+        {
+            if( mpAlphaVDev )
+                mpAlphaVDev->DrawPolygon( rPoly );
+            return;
+        }
+    }
+
+    tools::Polygon aPoly = ImplLogicToDevicePixel( rPoly );
+    const Point* pPtAry = aPoly.GetConstPointAry();
+
+    // #100127# Forward beziers to sal, if any
+    if( aPoly.HasFlags() )
+    {
+        const PolyFlags* pFlgAry = aPoly.GetConstFlagAry();
+        if( !mpGraphics->DrawPolygonBezier( nPoints, pPtAry, pFlgAry, *this ) )
+        {
+            aPoly = tools::Polygon::SubdivideBezier(aPoly);
+            pPtAry = aPoly.GetConstPointAry();
+            mpGraphics->DrawPolygon( aPoly.GetSize(), pPtAry, *this );
+        }
+    }
+    else
+    {
+        mpGraphics->DrawPolygon( nPoints, pPtAry, *this );
+    }
+    if( mpAlphaVDev )
+        mpAlphaVDev->DrawPolygon( rPoly );
+}
+
+// Caution: This method is nearly the same as
+// OutputDevice::DrawTransparent( const basegfx::B2DPolyPolygon& rB2DPolyPoly, double fTransparency),
+// so when changes are made here do not forget to make changes there, too
+
+void OutputDevice::DrawPolyPolygon( const basegfx::B2DPolyPolygon& rB2DPolyPoly )
+{
+    assert(!is_double_buffered_window());
+
+    if( mpMetaFile )
+        mpMetaFile->AddAction( new MetaPolyPolygonAction( tools::PolyPolygon( rB2DPolyPoly ) ) );
+
+    // call helper
+    ImplDrawPolyPolygonWithB2DPolyPolygon(rB2DPolyPoly);
+}
+
+void OutputDevice::ImplDrawPolyPolygonWithB2DPolyPolygon(const basegfx::B2DPolyPolygon& rB2DPolyPoly)
+{
+    // Do not paint empty PolyPolygons
+    if(!rB2DPolyPoly.count() || !IsDeviceOutputNecessary())
+        return;
+
+    // we need a graphics
+    if( !mpGraphics && !AcquireGraphics() )
+        return;
+    assert(mpGraphics);
+
+    if( mbInitClipRegion )
+        InitClipRegion();
+
+    if( mbOutputClipped )
+        return;
+
+    if( mbInitLineColor )
+        InitLineColor();
+
+    if( mbInitFillColor )
+        InitFillColor();
+
+    bool bSuccess(false);
+
+    if(mpGraphics->supportsOperation(OutDevSupportType::B2DDraw) &&
+       RasterOp::OverPaint == GetRasterOp() &&
+       (IsLineColor() || IsFillColor()))
+    {
+        const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+        basegfx::B2DPolyPolygon aB2DPolyPolygon(rB2DPolyPoly);
+        bSuccess = true;
+
+        // ensure closed - maybe assert, hinders buffering
+        if(!aB2DPolyPolygon.isClosed())
+        {
+            aB2DPolyPolygon.setClosed(true);
+        }
+
+        if(IsFillColor())
+        {
+            bSuccess = mpGraphics->DrawPolyPolygon(
+                aTransform,
+                aB2DPolyPolygon,
+                0.0,
+                *this);
+        }
+
+        if(bSuccess && IsLineColor())
+        {
+            const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+            for(auto const& rPolygon : std::as_const(aB2DPolyPolygon))
+            {
+                bSuccess = mpGraphics->DrawPolyLine(
+                    aTransform,
+                    rPolygon,
+                    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 (!bSuccess)
+                    break;
+            }
+        }
+    }
+
+    if (!bSuccess)
+    {
+        // fallback to old polygon drawing if needed
+        const tools::PolyPolygon aToolsPolyPolygon(rB2DPolyPoly);
+        const tools::PolyPolygon aPixelPolyPolygon = ImplLogicToDevicePixel(aToolsPolyPolygon);
+        ImplDrawPolyPolygon(aPixelPolyPolygon.Count(), aPixelPolyPolygon);
+    }
+
+    if (mpAlphaVDev)
+        mpAlphaVDev->ImplDrawPolyPolygonWithB2DPolyPolygon(rB2DPolyPoly);
+}
+
+// #100127# Extracted from OutputDevice::DrawPolyPolygon()
+void OutputDevice::ImplDrawPolyPolygon( sal_uInt16 nPoly, const tools::PolyPolygon& rPolyPoly )
+{
+    // AW: This crashes on empty PolyPolygons, avoid that
+    if(!nPoly)
+        return;
+
+    sal_uInt32 aStackAry1[OUTDEV_POLYPOLY_STACKBUF];
+    const Point* aStackAry2[OUTDEV_POLYPOLY_STACKBUF];
+    PolyFlags* aStackAry3[OUTDEV_POLYPOLY_STACKBUF];
+    sal_uInt32* pPointAry;
+    const Point**    pPointAryAry;
+    const PolyFlags**  pFlagAryAry;
+    sal_uInt16 i = 0;
+    sal_uInt16 j = 0;
+    sal_uInt16 last = 0;
+    bool bHaveBezier = false;
+    if ( nPoly > OUTDEV_POLYPOLY_STACKBUF )
+    {
+        pPointAry       = new sal_uInt32[nPoly];
+        pPointAryAry    = new const Point*[nPoly];
+        pFlagAryAry     = new const PolyFlags*[nPoly];
+    }
+    else
+    {
+        pPointAry       = aStackAry1;
+        pPointAryAry    = aStackAry2;
+        pFlagAryAry     = const_cast<const PolyFlags**>(aStackAry3);
+    }
+
+    do
+    {
+        const tools::Polygon& rPoly = rPolyPoly.GetObject( i );
+        sal_uInt16 nSize = rPoly.GetSize();
+        if ( nSize )
+        {
+            pPointAry[j] = nSize;
+            pPointAryAry[j] = rPoly.GetConstPointAry();
+            pFlagAryAry[j] = rPoly.GetConstFlagAry();
+            last = i;
+
+            if( pFlagAryAry[j] )
+                bHaveBezier = true;
+
+            ++j;
+        }
+        ++i;
+    }
+    while ( i < nPoly );
+
+    if ( j == 1 )
+    {
+        // #100127# Forward beziers to sal, if any
+        if( bHaveBezier )
+        {
+            if( !mpGraphics->DrawPolygonBezier( *pPointAry, *pPointAryAry, *pFlagAryAry, *this ) )
+            {
+                tools::Polygon aPoly = tools::Polygon::SubdivideBezier( rPolyPoly.GetObject( last ) );
+                mpGraphics->DrawPolygon( aPoly.GetSize(), aPoly.GetConstPointAry(), *this );
+            }
+        }
+        else
+        {
+            mpGraphics->DrawPolygon( *pPointAry, *pPointAryAry, *this );
+        }
+    }
+    else
+    {
+        // #100127# Forward beziers to sal, if any
+        if( bHaveBezier )
+        {
+            if (!mpGraphics->DrawPolyPolygonBezier(j, pPointAry, pPointAryAry, pFlagAryAry, *this))
+            {
+                tools::PolyPolygon aPolyPoly = tools::PolyPolygon::SubdivideBezier( rPolyPoly );
+                ImplDrawPolyPolygon( aPolyPoly.Count(), aPolyPoly );
+            }
+        }
+        else
+        {
+            mpGraphics->DrawPolyPolygon( j, pPointAry, pPointAryAry, *this );
+        }
+    }
+
+    if ( pPointAry != aStackAry1 )
+    {
+        delete[] pPointAry;
+        delete[] pPointAryAry;
+        delete[] pFlagAryAry;
+    }
+}
+
+void OutputDevice::ImplDrawPolygon( const tools::Polygon& rPoly, const tools::PolyPolygon* pClipPolyPoly )
+{
+    if( pClipPolyPoly )
+    {
+        ImplDrawPolyPolygon( rPoly, pClipPolyPoly );
+    }
+    else
+    {
+        sal_uInt16 nPoints = rPoly.GetSize();
+
+        if ( nPoints < 2 )
+            return;
+
+        const Point* pPtAry = rPoly.GetConstPointAry();
+        mpGraphics->DrawPolygon( nPoints, pPtAry, *this );
+    }
+}
+
+void OutputDevice::ImplDrawPolyPolygon( const tools::PolyPolygon& rPolyPoly, const tools::PolyPolygon* pClipPolyPoly )
+{
+    tools::PolyPolygon* pPolyPoly;
+
+    if( pClipPolyPoly )
+    {
+        pPolyPoly = new tools::PolyPolygon;
+        rPolyPoly.GetIntersection( *pClipPolyPoly, *pPolyPoly );
+    }
+    else
+    {
+        pPolyPoly = const_cast<tools::PolyPolygon*>(&rPolyPoly);
+    }
+    if( pPolyPoly->Count() == 1 )
+    {
+        const tools::Polygon& rPoly = pPolyPoly->GetObject( 0 );
+        sal_uInt16 nSize = rPoly.GetSize();
+
+        if( nSize >= 2 )
+        {
+            const Point* pPtAry = rPoly.GetConstPointAry();
+            mpGraphics->DrawPolygon( nSize, pPtAry, *this );
+        }
+    }
+    else if( pPolyPoly->Count() )
+    {
+        sal_uInt16 nCount = pPolyPoly->Count();
+        std::unique_ptr<sal_uInt32[]> pPointAry(new sal_uInt32[nCount]);
+        std::unique_ptr<const Point*[]> pPointAryAry(new const Point*[nCount]);
+        sal_uInt16 i = 0;
+        do
+        {
+            const tools::Polygon& rPoly = pPolyPoly->GetObject( i );
+            sal_uInt16 nSize = rPoly.GetSize();
+            if ( nSize )
+            {
+                pPointAry[i] = nSize;
+                pPointAryAry[i] = rPoly.GetConstPointAry();
+                i++;
+            }
+            else
+                nCount--;
+        }
+        while( i < nCount );
+
+        if( nCount == 1 )
+            mpGraphics->DrawPolygon( pPointAry[0], pPointAryAry[0], *this );
+        else
+            mpGraphics->DrawPolyPolygon( nCount, pPointAry.get(), pPointAryAry.get(), *this );
+    }
+
+    if( pClipPolyPoly )
+        delete pPolyPoly;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */