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, 428 insertions, 0 deletions

diff --git a/drawinglayer/source/primitive2d/borderlineprimitive2d.cxx b/drawinglayer/source/primitive2d/borderlineprimitive2d.cxx
new file mode 100644
index 000000000..b264e2c02
--- /dev/null
+++ b/drawinglayer/source/primitive2d/borderlineprimitive2d.cxx
@@ -0,0 +1,428 @@
+/* -*- 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 <drawinglayer/geometry/viewinformation2d.hxx>
+#include <drawinglayer/primitive2d/borderlineprimitive2d.hxx>
+#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
+#include <drawinglayer/primitive2d/PolyPolygonColorPrimitive2D.hxx>
+#include <rtl/math.hxx>
+
+#include <algorithm>
+
+
+namespace drawinglayer::primitive2d
+{
+        BorderLine::BorderLine(
+            const drawinglayer::attribute::LineAttribute& rLineAttribute,
+            double fStartLeft,
+            double fStartRight,
+            double fEndLeft,
+            double fEndRight)
+        :   maLineAttribute(rLineAttribute),
+            mfStartLeft(fStartLeft),
+            mfStartRight(fStartRight),
+            mfEndLeft(fEndLeft),
+            mfEndRight(fEndRight),
+            mbIsGap(false)
+        {
+        }
+
+        BorderLine::BorderLine(
+            double fWidth)
+        :   maLineAttribute(basegfx::BColor(), fWidth),
+            mfStartLeft(0.0),
+            mfStartRight(0.0),
+            mfEndLeft(0.0),
+            mfEndRight(0.0),
+            mbIsGap(true)
+        {
+        }
+
+        BorderLine::~BorderLine()
+        {
+        }
+
+        bool BorderLine::operator==(const BorderLine& rBorderLine) const
+        {
+            return getLineAttribute() == rBorderLine.getLineAttribute()
+                && getStartLeft() == rBorderLine.getStartLeft()
+                && getStartRight() == rBorderLine.getStartRight()
+                && getEndLeft() == rBorderLine.getEndLeft()
+                && getEndRight() == rBorderLine.getEndRight()
+                && isGap() == rBorderLine.isGap();
+        }
+
+        // helper to add a centered, maybe stroked line primitive to rContainer
+        static void addPolygonStrokePrimitive2D(
+            Primitive2DContainer& rContainer,
+            const basegfx::B2DPoint& rStart,
+            const basegfx::B2DPoint& rEnd,
+            const attribute::LineAttribute& rLineAttribute,
+            const attribute::StrokeAttribute& rStrokeAttribute)
+        {
+            basegfx::B2DPolygon aPolygon;
+
+            aPolygon.append(rStart);
+            aPolygon.append(rEnd);
+
+            if (rStrokeAttribute.isDefault())
+            {
+                rContainer.push_back(
+                    new PolygonStrokePrimitive2D(
+                        aPolygon,
+                        rLineAttribute));
+            }
+            else
+            {
+                rContainer.push_back(
+                    new PolygonStrokePrimitive2D(
+                        aPolygon,
+                        rLineAttribute,
+                        rStrokeAttribute));
+            }
+        }
+
+        double BorderLinePrimitive2D::getFullWidth() const
+        {
+            double fRetval(0.0);
+
+            for(const auto& candidate : maBorderLines)
+            {
+                fRetval += candidate.getLineAttribute().getWidth();
+            }
+
+            return fRetval;
+        }
+
+        void BorderLinePrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
+        {
+            if (getStart().equal(getEnd()) || getBorderLines().empty())
+                return;
+
+            // get data and vectors
+            basegfx::B2DVector aVector(getEnd() - getStart());
+            aVector.normalize();
+            const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));
+            const double fFullWidth(getFullWidth());
+            double fOffset(fFullWidth * -0.5);
+
+            for(const auto& candidate : maBorderLines)
+            {
+                const double fWidth(candidate.getLineAttribute().getWidth());
+
+                if(!candidate.isGap())
+                {
+                    const basegfx::B2DVector aDeltaY(aPerpendicular * (fOffset + (fWidth * 0.5)));
+                    const basegfx::B2DPoint aStart(getStart() + aDeltaY);
+                    const basegfx::B2DPoint aEnd(getEnd() + aDeltaY);
+                    const bool bStartPerpendicular(rtl::math::approxEqual(candidate.getStartLeft(), candidate.getStartRight()));
+                    const bool bEndPerpendicular(rtl::math::approxEqual(candidate.getEndLeft(), candidate.getEndRight()));
+
+                    if(bStartPerpendicular && bEndPerpendicular)
+                    {
+                        // start and end extends lead to an edge perpendicular to the line, so we can just use
+                        // a PolygonStrokePrimitive2D for representation
+                        addPolygonStrokePrimitive2D(
+                            rContainer,
+                            aStart - (aVector * candidate.getStartLeft()),
+                            aEnd + (aVector * candidate.getEndLeft()),
+                            candidate.getLineAttribute(),
+                            getStrokeAttribute());
+                    }
+                    else
+                    {
+                        // start and/or end extensions lead to a lineStart/End that is *not*
+                        // perpendicular to the line itself
+                        if(getStrokeAttribute().isDefault() || 0.0 == getStrokeAttribute().getFullDotDashLen())
+                        {
+                            // without stroke, we can simply represent that using a filled polygon
+                            const basegfx::B2DVector aHalfLineOffset(aPerpendicular * (candidate.getLineAttribute().getWidth() * 0.5));
+                            basegfx::B2DPolygon aPolygon;
+
+                            aPolygon.append(aStart - aHalfLineOffset - (aVector * candidate.getStartLeft()));
+                            aPolygon.append(aEnd - aHalfLineOffset + (aVector * candidate.getEndLeft()));
+                            aPolygon.append(aEnd + aHalfLineOffset + (aVector * candidate.getEndRight()));
+                            aPolygon.append(aStart + aHalfLineOffset - (aVector * candidate.getStartRight()));
+
+                            rContainer.push_back(
+                                new PolyPolygonColorPrimitive2D(
+                                    basegfx::B2DPolyPolygon(aPolygon),
+                                    candidate.getLineAttribute().getColor()));
+                        }
+                        else
+                        {
+                            // with stroke, we have a problem - a filled polygon would lose the
+                            // stroke. Let's represent the start and/or end as triangles, the main
+                            // line still as PolygonStrokePrimitive2D.
+                            // Fill default line Start/End for stroke, so we need no adaptations in else paths
+                            basegfx::B2DPoint aStrokeStart(aStart - (aVector * candidate.getStartLeft()));
+                            basegfx::B2DPoint aStrokeEnd(aEnd + (aVector * candidate.getEndLeft()));
+                            const basegfx::B2DVector aHalfLineOffset(aPerpendicular * (candidate.getLineAttribute().getWidth() * 0.5));
+
+                            if(!bStartPerpendicular)
+                            {
+                                const double fMin(std::min(candidate.getStartLeft(), candidate.getStartRight()));
+                                const double fMax(std::max(candidate.getStartLeft(), candidate.getStartRight()));
+                                basegfx::B2DPolygon aPolygon;
+
+                                // create a triangle with min/max values for LineStart and add
+                                if(rtl::math::approxEqual(candidate.getStartLeft(), fMax))
+                                {
+                                    aPolygon.append(aStart - aHalfLineOffset - (aVector * candidate.getStartLeft()));
+                                }
+
+                                aPolygon.append(aStart - aHalfLineOffset - (aVector * fMin));
+                                aPolygon.append(aStart + aHalfLineOffset - (aVector * fMin));
+
+                                if(rtl::math::approxEqual(candidate.getStartRight(), fMax))
+                                {
+                                    aPolygon.append(aStart + aHalfLineOffset - (aVector * candidate.getStartRight()));
+                                }
+
+                                rContainer.push_back(
+                                    new PolyPolygonColorPrimitive2D(
+                                        basegfx::B2DPolyPolygon(aPolygon),
+                                        candidate.getLineAttribute().getColor()));
+
+                                // Adapt StrokeStart accordingly
+                                aStrokeStart = aStart - (aVector * fMin);
+                            }
+
+                            if(!bEndPerpendicular)
+                            {
+                                const double fMin(std::min(candidate.getEndLeft(), candidate.getEndRight()));
+                                const double fMax(std::max(candidate.getEndLeft(), candidate.getEndRight()));
+                                basegfx::B2DPolygon aPolygon;
+
+                                // create a triangle with min/max values for LineEnd and add
+                                if(rtl::math::approxEqual(candidate.getEndLeft(), fMax))
+                                {
+                                    aPolygon.append(aEnd - aHalfLineOffset + (aVector * candidate.getEndLeft()));
+                                }
+
+                                if(rtl::math::approxEqual(candidate.getEndRight(), fMax))
+                                {
+                                    aPolygon.append(aEnd + aHalfLineOffset + (aVector * candidate.getEndRight()));
+                                }
+
+                                aPolygon.append(aEnd + aHalfLineOffset + (aVector * fMin));
+                                aPolygon.append(aEnd - aHalfLineOffset + (aVector * fMin));
+
+                                rContainer.push_back(
+                                    new PolyPolygonColorPrimitive2D(
+                                        basegfx::B2DPolyPolygon(aPolygon),
+                                        candidate.getLineAttribute().getColor()));
+
+                                // Adapt StrokeEnd accordingly
+                                aStrokeEnd = aEnd + (aVector * fMin);
+                            }
+
+                            addPolygonStrokePrimitive2D(
+                                rContainer,
+                                aStrokeStart,
+                                aStrokeEnd,
+                                candidate.getLineAttribute(),
+                                getStrokeAttribute());
+                        }
+                    }
+                }
+
+                fOffset += fWidth;
+            }
+        }
+
+        bool BorderLinePrimitive2D::isHorizontalOrVertical(const geometry::ViewInformation2D& rViewInformation) const
+        {
+            if (!getStart().equal(getEnd()))
+            {
+                const basegfx::B2DHomMatrix& rOTVT = rViewInformation.getObjectToViewTransformation();
+                const basegfx::B2DVector aVector(rOTVT * getEnd() - rOTVT * getStart());
+
+                return basegfx::fTools::equalZero(aVector.getX()) || basegfx::fTools::equalZero(aVector.getY());
+            }
+
+            return false;
+        }
+
+        BorderLinePrimitive2D::BorderLinePrimitive2D(
+            const basegfx::B2DPoint& rStart,
+            const basegfx::B2DPoint& rEnd,
+            const std::vector< BorderLine >& rBorderLines,
+            const drawinglayer::attribute::StrokeAttribute& rStrokeAttribute)
+        :   BufferedDecompositionPrimitive2D(),
+            maStart(rStart),
+            maEnd(rEnd),
+            maBorderLines(rBorderLines),
+            maStrokeAttribute(rStrokeAttribute)
+        {
+        }
+
+        bool BorderLinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
+        {
+            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
+            {
+                const BorderLinePrimitive2D& rCompare = static_cast<const BorderLinePrimitive2D&>(rPrimitive);
+
+                if (getStart() == rCompare.getStart()
+                    && getEnd() == rCompare.getEnd()
+                    && getStrokeAttribute() == rCompare.getStrokeAttribute())
+                {
+                    if (getBorderLines().size() == rCompare.getBorderLines().size())
+                    {
+                        for (size_t a(0); a < getBorderLines().size(); a++)
+                        {
+                            if (!(getBorderLines()[a] == rCompare.getBorderLines()[a]))
+                            {
+                                return false;
+                            }
+                        }
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        // provide unique ID
+        ImplPrimitive2DIDBlock(BorderLinePrimitive2D, PRIMITIVE2D_ID_BORDERLINEPRIMITIVE2D)
+
+        Primitive2DReference tryMergeBorderLinePrimitive2D(
+            const BorderLinePrimitive2D* pCandidateA,
+            const BorderLinePrimitive2D* pCandidateB)
+        {
+            assert(pCandidateA);
+            assert(pCandidateB);
+
+            // start of candidate has to match end of this
+            if(!pCandidateA->getEnd().equal(pCandidateB->getStart()))
+            {
+                return Primitive2DReference();
+            }
+
+            // candidate A needs a length
+            if(pCandidateA->getStart().equal(pCandidateA->getEnd()))
+            {
+                return Primitive2DReference();
+            }
+
+            // candidate B needs a length
+            if(pCandidateB->getStart().equal(pCandidateB->getEnd()))
+            {
+                return Primitive2DReference();
+            }
+
+            // StrokeAttribute has to be equal
+            if(!(pCandidateA->getStrokeAttribute() == pCandidateB->getStrokeAttribute()))
+            {
+                return Primitive2DReference();
+            }
+
+            // direction has to be equal -> cross product == 0.0
+            const basegfx::B2DVector aVT(pCandidateA->getEnd() - pCandidateA->getStart());
+            const basegfx::B2DVector aVC(pCandidateB->getEnd() - pCandidateB->getStart());
+            if(!rtl::math::approxEqual(0.0, aVC.cross(aVT)))
+            {
+                return Primitive2DReference();
+            }
+
+            // number BorderLines has to be equal
+            const size_t count(pCandidateA->getBorderLines().size());
+            if(count != pCandidateB->getBorderLines().size())
+            {
+                return Primitive2DReference();
+            }
+
+            for(size_t a(0); a < count; a++)
+            {
+                const BorderLine& rBT(pCandidateA->getBorderLines()[a]);
+                const BorderLine& rBC(pCandidateB->getBorderLines()[a]);
+
+                // LineAttribute has to be the same
+                if(!(rBC.getLineAttribute() == rBT.getLineAttribute()))
+                {
+                    return Primitive2DReference();
+                }
+
+                // isGap has to be the same
+                if(rBC.isGap() != rBT.isGap())
+                {
+                    return Primitive2DReference();
+                }
+
+                if(rBT.isGap())
+                {
+                    // when gap, width has to be equal
+                    if(!rtl::math::approxEqual(rBT.getLineAttribute().getWidth(), rBC.getLineAttribute().getWidth()))
+                    {
+                        return Primitive2DReference();
+                    }
+                }
+                else
+                {
+                    // when not gap, the line extends have at least reach to the center ( > 0.0),
+                    // else there is an extend usage. When > 0.0 they just overlap, no problem
+                    if(rBT.getEndLeft() >= 0.0
+                        && rBT.getEndRight() >= 0.0
+                        && rBC.getStartLeft() >= 0.0
+                        && rBC.getStartRight() >= 0.0)
+                    {
+                        // okay
+                    }
+                    else
+                    {
+                        return Primitive2DReference();
+                    }
+                }
+            }
+
+            // all conditions met, create merged primitive
+            std::vector< BorderLine > aMergedBorderLines;
+
+            for(size_t a(0); a < count; a++)
+            {
+                const BorderLine& rBT(pCandidateA->getBorderLines()[a]);
+                const BorderLine& rBC(pCandidateB->getBorderLines()[a]);
+
+                if(rBT.isGap())
+                {
+                    aMergedBorderLines.push_back(rBT);
+                }
+                else
+                {
+                    aMergedBorderLines.push_back(
+                        BorderLine(
+                            rBT.getLineAttribute(),
+                            rBT.getStartLeft(), rBT.getStartRight(),
+                            rBC.getEndLeft(), rBC.getEndRight()));
+                }
+            }
+
+            return Primitive2DReference(
+                new BorderLinePrimitive2D(
+                    pCandidateA->getStart(),
+                    pCandidateB->getEnd(),
+                    aMergedBorderLines,
+                    pCandidateA->getStrokeAttribute()));
+        }
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */