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+/* -*- 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 <basegfx/polygon/b2dlinegeometry.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/virdev.hxx>
+
+#include <salgdi.hxx>
+
+void OutputDevice::DrawPolyLine( const tools::Polygon& rPoly )
+{
+ assert(!is_double_buffered_window());
+
+ if( mpMetaFile )
+ mpMetaFile->AddAction( new MetaPolyLineAction( rPoly ) );
+
+ sal_uInt16 nPoints = rPoly.GetSize();
+
+ if ( !IsDeviceOutputNecessary() || !mbLineColor || (nPoints < 2) || ImplIsRecordLayout() )
+ return;
+
+ // we need a graphics
+ if ( !mpGraphics && !AcquireGraphics() )
+ return;
+ assert(mpGraphics);
+
+ if ( mbInitClipRegion )
+ InitClipRegion();
+
+ if ( mbOutputClipped )
+ return;
+
+ if ( mbInitLineColor )
+ InitLineColor();
+
+ // use b2dpolygon drawing if possible
+ if(DrawPolyLineDirectInternal(
+ basegfx::B2DHomMatrix(),
+ rPoly.getB2DPolygon()))
+ {
+ return;
+ }
+
+ const basegfx::B2DPolygon aB2DPolyLine(rPoly.getB2DPolygon());
+ const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+ const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+ bool bDrawn = mpGraphics->DrawPolyLine(
+ aTransform,
+ aB2DPolyLine,
+ 0.0,
+ 0.0, // tdf#124848 hairline
+ nullptr, // MM01
+ basegfx::B2DLineJoin::NONE,
+ css::drawing::LineCap_BUTT,
+ basegfx::deg2rad(15.0) /*default fMiterMinimumAngle, not used*/,
+ bPixelSnapHairline,
+ *this);
+
+ if(!bDrawn)
+ {
+ tools::Polygon aPoly = ImplLogicToDevicePixel( rPoly );
+ Point* pPtAry = aPoly.GetPointAry();
+
+ // #100127# Forward beziers to sal, if any
+ if( aPoly.HasFlags() )
+ {
+ const PolyFlags* pFlgAry = aPoly.GetConstFlagAry();
+ if( !mpGraphics->DrawPolyLineBezier( nPoints, pPtAry, pFlgAry, *this ) )
+ {
+ aPoly = tools::Polygon::SubdivideBezier(aPoly);
+ pPtAry = aPoly.GetPointAry();
+ mpGraphics->DrawPolyLine( aPoly.GetSize(), pPtAry, *this );
+ }
+ }
+ else
+ {
+ mpGraphics->DrawPolyLine( nPoints, pPtAry, *this );
+ }
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->DrawPolyLine( rPoly );
+}
+
+void OutputDevice::DrawPolyLine( const tools::Polygon& rPoly, const LineInfo& rLineInfo )
+{
+ assert(!is_double_buffered_window());
+
+ if ( rLineInfo.IsDefault() )
+ {
+ DrawPolyLine( rPoly );
+ return;
+ }
+
+ if (IsDeviceOutputNecessary())
+ {
+ auto eLineStyle = rLineInfo.GetStyle();
+ switch (eLineStyle)
+ {
+ case LineStyle::NONE:
+ case LineStyle::Dash:
+ // use drawPolyLine for these
+ break;
+ case LineStyle::Solid:
+ // #i101491# Try direct Fallback to B2D-Version of DrawPolyLine
+ DrawPolyLine(
+ rPoly.getB2DPolygon(),
+ rLineInfo.GetWidth(),
+ rLineInfo.GetLineJoin(),
+ rLineInfo.GetLineCap(),
+ basegfx::deg2rad(15.0) /* default fMiterMinimumAngle, value not available in LineInfo */);
+ return;
+ default:
+ SAL_WARN("vcl.gdi", "Unknown LineStyle: " << static_cast<int>(eLineStyle));
+ return;
+ }
+ }
+
+ if ( mpMetaFile )
+ mpMetaFile->AddAction( new MetaPolyLineAction( rPoly, rLineInfo ) );
+
+ drawPolyLine(rPoly, rLineInfo);
+}
+
+void OutputDevice::DrawPolyLine( const basegfx::B2DPolygon& rB2DPolygon,
+ double fLineWidth,
+ basegfx::B2DLineJoin eLineJoin,
+ css::drawing::LineCap eLineCap,
+ double fMiterMinimumAngle)
+{
+ assert(!is_double_buffered_window());
+
+ if( mpMetaFile )
+ {
+ LineInfo aLineInfo;
+ if( fLineWidth != 0.0 )
+ aLineInfo.SetWidth( fLineWidth );
+
+ aLineInfo.SetLineJoin(eLineJoin);
+ aLineInfo.SetLineCap(eLineCap);
+
+ const tools::Polygon aToolsPolygon( rB2DPolygon );
+ mpMetaFile->AddAction( new MetaPolyLineAction( aToolsPolygon, aLineInfo ) );
+ }
+
+ // Do not paint empty PolyPolygons
+ if(!rB2DPolygon.count() || !IsDeviceOutputNecessary())
+ return;
+
+ // we need a graphics
+ if( !mpGraphics && !AcquireGraphics() )
+ return;
+ assert(mpGraphics);
+
+ if( mbInitClipRegion )
+ InitClipRegion();
+
+ if( mbOutputClipped )
+ return;
+
+ if( mbInitLineColor )
+ InitLineColor();
+
+ // use b2dpolygon drawing if possible
+ if(DrawPolyLineDirectInternal(
+ basegfx::B2DHomMatrix(),
+ rB2DPolygon,
+ fLineWidth,
+ 0.0,
+ nullptr, // MM01
+ eLineJoin,
+ eLineCap,
+ fMiterMinimumAngle))
+ {
+ return;
+ }
+
+ // #i101491#
+ // no output yet; fallback to geometry decomposition and use filled polygon paint
+ // when line is fat and not too complex. ImplDrawPolyPolygonWithB2DPolyPolygon
+ // will do internal needed AA checks etc.
+ if(fLineWidth >= 2.5 &&
+ rB2DPolygon.count() &&
+ rB2DPolygon.count() <= 1000)
+ {
+ const double fHalfLineWidth((fLineWidth * 0.5) + 0.5);
+ const basegfx::B2DPolyPolygon aAreaPolyPolygon(
+ basegfx::utils::createAreaGeometry( rB2DPolygon,
+ fHalfLineWidth,
+ eLineJoin,
+ eLineCap,
+ fMiterMinimumAngle));
+ const Color aOldLineColor(maLineColor);
+ const Color aOldFillColor(maFillColor);
+
+ SetLineColor();
+ InitLineColor();
+ SetFillColor(aOldLineColor);
+ InitFillColor();
+
+ // draw using a loop; else the topology will paint a PolyPolygon
+ for(auto const& rPolygon : aAreaPolyPolygon)
+ {
+ ImplDrawPolyPolygonWithB2DPolyPolygon(
+ basegfx::B2DPolyPolygon(rPolygon));
+ }
+
+ SetLineColor(aOldLineColor);
+ InitLineColor();
+ SetFillColor(aOldFillColor);
+ InitFillColor();
+
+ // when AA it is necessary to also paint the filled polygon's outline
+ // to avoid optical gaps
+ for(auto const& rPolygon : aAreaPolyPolygon)
+ {
+ (void)DrawPolyLineDirectInternal(
+ basegfx::B2DHomMatrix(),
+ rPolygon);
+ }
+ }
+ else
+ {
+ // fallback to old polygon drawing if needed
+ const tools::Polygon aToolsPolygon( rB2DPolygon );
+ LineInfo aLineInfo;
+ if( fLineWidth != 0.0 )
+ aLineInfo.SetWidth( fLineWidth );
+
+ drawPolyLine( aToolsPolygon, aLineInfo );
+ }
+}
+
+void OutputDevice::drawPolyLine(const tools::Polygon& rPoly, const LineInfo& rLineInfo)
+{
+ sal_uInt16 nPoints(rPoly.GetSize());
+
+ if ( !IsDeviceOutputNecessary() || !mbLineColor || ( nPoints < 2 ) || ( LineStyle::NONE == rLineInfo.GetStyle() ) || ImplIsRecordLayout() )
+ return;
+
+ // we need a graphics
+ if ( !mpGraphics && !AcquireGraphics() )
+ return;
+ assert(mpGraphics);
+
+ if ( mbInitClipRegion )
+ InitClipRegion();
+
+ if ( mbOutputClipped )
+ return;
+
+ if ( mbInitLineColor )
+ InitLineColor();
+
+ const LineInfo aInfo( ImplLogicToDevicePixel( rLineInfo ) );
+ const bool bDashUsed(LineStyle::Dash == aInfo.GetStyle());
+ const bool bLineWidthUsed(aInfo.GetWidth() > 1);
+
+ if (bDashUsed || bLineWidthUsed)
+ {
+ basegfx::B2DPolygon aPoly = ImplLogicToDevicePixel(rPoly.getB2DPolygon());
+ drawLine(basegfx::B2DPolyPolygon(aPoly), aInfo);
+ }
+ else
+ {
+ tools::Polygon aPoly = ImplLogicToDevicePixel(rPoly);
+
+ // #100127# the subdivision HAS to be done here since only a pointer
+ // to an array of points is given to the DrawPolyLine method, there is
+ // NO way to find out there that it's a curve.
+ if( aPoly.HasFlags() )
+ {
+ aPoly = tools::Polygon::SubdivideBezier( aPoly );
+ nPoints = aPoly.GetSize();
+ }
+
+ mpGraphics->DrawPolyLine(nPoints, aPoly.GetPointAry(), *this);
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->DrawPolyLine( rPoly, rLineInfo );
+}
+
+bool OutputDevice::DrawPolyLineDirect(
+ const basegfx::B2DHomMatrix& rObjectTransform,
+ const basegfx::B2DPolygon& rB2DPolygon,
+ double fLineWidth,
+ double fTransparency,
+ const std::vector< double >* pStroke, // MM01
+ basegfx::B2DLineJoin eLineJoin,
+ css::drawing::LineCap eLineCap,
+ double fMiterMinimumAngle)
+{
+ if(DrawPolyLineDirectInternal(rObjectTransform, rB2DPolygon, fLineWidth, fTransparency,
+ pStroke, eLineJoin, eLineCap, fMiterMinimumAngle))
+ {
+ // Worked, add metafile action (if recorded). This is done only here,
+ // because this function is public, other OutDev functions already add metafile
+ // actions, so they call the internal function directly.
+ if( mpMetaFile )
+ {
+ LineInfo aLineInfo;
+ if( fLineWidth != 0.0 )
+ aLineInfo.SetWidth( fLineWidth );
+ // Transport known information, might be needed
+ aLineInfo.SetLineJoin(eLineJoin);
+ aLineInfo.SetLineCap(eLineCap);
+ // MiterMinimumAngle does not exist yet in LineInfo
+ const tools::Polygon aToolsPolygon( rB2DPolygon );
+ mpMetaFile->AddAction( new MetaPolyLineAction( aToolsPolygon, aLineInfo ) );
+ }
+ return true;
+ }
+ return false;
+}
+
+bool OutputDevice::DrawPolyLineDirectInternal(
+ const basegfx::B2DHomMatrix& rObjectTransform,
+ const basegfx::B2DPolygon& rB2DPolygon,
+ double fLineWidth,
+ double fTransparency,
+ const std::vector< double >* pStroke, // MM01
+ basegfx::B2DLineJoin eLineJoin,
+ css::drawing::LineCap eLineCap,
+ double fMiterMinimumAngle)
+{
+ assert(!is_double_buffered_window());
+
+ // AW: Do NOT paint empty PolyPolygons
+ if(!rB2DPolygon.count())
+ return true;
+
+ // we need a graphics
+ if( !mpGraphics && !AcquireGraphics() )
+ return false;
+ assert(mpGraphics);
+
+ if( mbInitClipRegion )
+ InitClipRegion();
+
+ if( mbOutputClipped )
+ return true;
+
+ if( mbInitLineColor )
+ InitLineColor();
+
+ const bool bTryB2d(mpGraphics->supportsOperation(OutDevSupportType::B2DDraw) &&
+ RasterOp::OverPaint == GetRasterOp() &&
+ IsLineColor());
+
+ if(bTryB2d)
+ {
+ // combine rObjectTransform with WorldToDevice
+ const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation() * rObjectTransform);
+ const bool bPixelSnapHairline((mnAntialiasing & AntialiasingFlags::PixelSnapHairline) && rB2DPolygon.count() < 1000);
+
+ const double fAdjustedTransparency = mpAlphaVDev ? 0 : fTransparency;
+ // draw the polyline
+ bool bDrawSuccess = mpGraphics->DrawPolyLine(
+ aTransform,
+ rB2DPolygon,
+ fAdjustedTransparency,
+ fLineWidth, // tdf#124848 use LineWidth direct, do not try to solve for zero-case (aka hairline)
+ pStroke, // MM01
+ eLineJoin,
+ eLineCap,
+ fMiterMinimumAngle,
+ bPixelSnapHairline,
+ *this);
+
+ if( bDrawSuccess )
+ {
+ if (mpAlphaVDev)
+ mpAlphaVDev->DrawPolyLineDirect(rObjectTransform, rB2DPolygon, fLineWidth,
+ fTransparency, pStroke, eLineJoin, eLineCap,
+ fMiterMinimumAngle);
+
+ return true;
+ }
+ }
+ return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */