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, 334 insertions, 0 deletions

diff --git a/drawinglayer/source/primitive2d/fillgradientprimitive2d.cxx b/drawinglayer/source/primitive2d/fillgradientprimitive2d.cxx
new file mode 100644
index 000000000..7baf93bf5
--- /dev/null
+++ b/drawinglayer/source/primitive2d/fillgradientprimitive2d.cxx
@@ -0,0 +1,334 @@
+/* -*- 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/primitive2d/fillgradientprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <texture/texture.hxx>
+#include <drawinglayer/primitive2d/PolyPolygonColorPrimitive2D.hxx>
+#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
+
+
+using namespace com::sun::star;
+
+
+namespace drawinglayer::primitive2d
+{
+        void FillGradientPrimitive2D::generateMatricesAndColors(
+            std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries,
+            basegfx::BColor& rOuterColor) const
+        {
+            rEntries.clear();
+
+            // make sure steps is not too high/low
+            const basegfx::BColor aStart(getFillGradient().getStartColor());
+            const basegfx::BColor aEnd(getFillGradient().getEndColor());
+            const sal_uInt32 nMaxSteps(sal_uInt32((aStart.getMaximumDistance(aEnd) * 127.5) + 0.5));
+            sal_uInt32 nSteps(getFillGradient().getSteps());
+
+            if(nSteps == 0)
+            {
+                nSteps = nMaxSteps;
+            }
+
+            if(nSteps < 2)
+            {
+                nSteps = 2;
+            }
+
+            if(nSteps > nMaxSteps)
+            {
+                nSteps = nMaxSteps;
+            }
+
+            nSteps = std::max(sal_uInt32(1), nSteps);
+
+            switch(getFillGradient().getStyle())
+            {
+                case attribute::GradientStyle::Linear:
+                {
+                    texture::GeoTexSvxGradientLinear aGradient(
+                        getDefinitionRange(),
+                        getOutputRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getAngle());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+                case attribute::GradientStyle::Axial:
+                {
+                    texture::GeoTexSvxGradientAxial aGradient(
+                        getDefinitionRange(),
+                        getOutputRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getAngle());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+                case attribute::GradientStyle::Radial:
+                {
+                    texture::GeoTexSvxGradientRadial aGradient(
+                        getDefinitionRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getOffsetX(),
+                        getFillGradient().getOffsetY());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+                case attribute::GradientStyle::Elliptical:
+                {
+                    texture::GeoTexSvxGradientElliptical aGradient(
+                        getDefinitionRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getOffsetX(),
+                        getFillGradient().getOffsetY(),
+                        getFillGradient().getAngle());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+                case attribute::GradientStyle::Square:
+                {
+                    texture::GeoTexSvxGradientSquare aGradient(
+                        getDefinitionRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getOffsetX(),
+                        getFillGradient().getOffsetY(),
+                        getFillGradient().getAngle());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+                case attribute::GradientStyle::Rect:
+                {
+                    texture::GeoTexSvxGradientRect aGradient(
+                        getDefinitionRange(),
+                        aStart,
+                        aEnd,
+                        nSteps,
+                        getFillGradient().getBorder(),
+                        getFillGradient().getOffsetX(),
+                        getFillGradient().getOffsetY(),
+                        getFillGradient().getAngle());
+                    aGradient.appendTransformationsAndColors(rEntries, rOuterColor);
+                    break;
+                }
+            }
+        }
+
+        void FillGradientPrimitive2D::createOverlappingFill(
+            Primitive2DContainer& rContainer,
+            const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries,
+            const basegfx::BColor& rOuterColor,
+            const basegfx::B2DPolygon& rUnitPolygon) const
+        {
+            // create solid fill with outmost color
+            rContainer.push_back(
+                new PolyPolygonColorPrimitive2D(
+                    basegfx::B2DPolyPolygon(
+                        basegfx::utils::createPolygonFromRect(getOutputRange())),
+                    rOuterColor));
+
+            // create solid fill steps
+            for(const auto &a : rEntries)
+            {
+                // create part polygon
+                basegfx::B2DPolygon aNewPoly(rUnitPolygon);
+
+                aNewPoly.transform(a.maB2DHomMatrix);
+
+                // create solid fill
+                rContainer.push_back(
+                    new PolyPolygonColorPrimitive2D(
+                        basegfx::B2DPolyPolygon(aNewPoly),
+                        a.maBColor));
+            }
+        }
+
+        void FillGradientPrimitive2D::createNonOverlappingFill(
+            Primitive2DContainer& rContainer,
+            const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries,
+            const basegfx::BColor& rOuterColor,
+            const basegfx::B2DPolygon& rUnitPolygon) const
+        {
+            // get outmost visible range from object
+            basegfx::B2DRange aOutmostRange(getOutputRange());
+            basegfx::B2DPolyPolygon aCombinedPolyPoly;
+
+            if(!rEntries.empty())
+            {
+                // extend aOutmostRange with first polygon
+                basegfx::B2DPolygon aFirstPoly(rUnitPolygon);
+
+                aFirstPoly.transform(rEntries[0].maB2DHomMatrix);
+                aCombinedPolyPoly.append(aFirstPoly);
+                aOutmostRange.expand(aFirstPoly.getB2DRange());
+            }
+
+            // add outmost range to combined polypolygon (in 1st place), create first primitive
+            aCombinedPolyPoly.insert(0, basegfx::utils::createPolygonFromRect(aOutmostRange));
+            rContainer.push_back(
+                new PolyPolygonColorPrimitive2D(
+                    aCombinedPolyPoly,
+                    rOuterColor));
+
+            if(rEntries.empty())
+                return;
+
+            // reuse first polygon, it's the second one
+            aCombinedPolyPoly.remove(0);
+
+            for(size_t a(0); a < rEntries.size() - 1; a++)
+            {
+                // create next inner polygon, combined with last one
+                basegfx::B2DPolygon aNextPoly(rUnitPolygon);
+
+                aNextPoly.transform(rEntries[a + 1].maB2DHomMatrix);
+                aCombinedPolyPoly.append(aNextPoly);
+
+                // create primitive with correct color
+                rContainer.push_back(
+                    new PolyPolygonColorPrimitive2D(
+                        aCombinedPolyPoly,
+                        rEntries[a].maBColor));
+
+                // reuse inner polygon, it's the 2nd one
+                aCombinedPolyPoly.remove(0);
+            }
+
+            // add last inner polygon with last color
+            rContainer.push_back(
+                new PolyPolygonColorPrimitive2D(
+                    aCombinedPolyPoly,
+                    rEntries[rEntries.size() - 1].maBColor));
+        }
+
+        void FillGradientPrimitive2D::createFill(Primitive2DContainer& rContainer, bool bOverlapping) const
+        {
+            // prepare shape of the Unit Polygon
+            basegfx::B2DPolygon aUnitPolygon;
+
+            switch(getFillGradient().getStyle())
+            {
+                case attribute::GradientStyle::Radial:
+                case attribute::GradientStyle::Elliptical:
+                {
+                    aUnitPolygon = basegfx::utils::createPolygonFromCircle(basegfx::B2DPoint(0.0, 0.0), 1.0);
+                    break;
+                }
+                default: // GradientStyle::Linear, attribute::GradientStyle::Axial, attribute::GradientStyle::Square, attribute::GradientStyle::Rect
+                {
+                    aUnitPolygon = basegfx::utils::createPolygonFromRect(basegfx::B2DRange(-1.0, -1.0, 1.0, 1.0));
+                    break;
+                }
+            }
+
+            // get the transform matrices and colors (where colors
+            // will have one more entry that matrices)
+            std::vector< drawinglayer::texture::B2DHomMatrixAndBColor > aEntries;
+            basegfx::BColor aOuterColor;
+
+            generateMatricesAndColors(aEntries, aOuterColor);
+
+            if(bOverlapping)
+            {
+                createOverlappingFill(rContainer, aEntries, aOuterColor, aUnitPolygon);
+            }
+            else
+            {
+                createNonOverlappingFill(rContainer, aEntries, aOuterColor, aUnitPolygon);
+            }
+        }
+
+        void FillGradientPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const
+        {
+            // default creates overlapping fill which works with AntiAliasing and without.
+            // The non-overlapping version does not create single filled polygons, but
+            // PolyPolygons where each one describes a 'ring' for the gradient such
+            // that the rings will not overlap. This is useful for the old XOR-paint
+            // 'trick' of VCL which is recorded in Metafiles; so this version may be
+            // used from the MetafilePrimitive2D in its decomposition.
+
+            if(!getFillGradient().isDefault())
+            {
+                createFill(rContainer, /*bOverlapping*/true);
+            }
+        }
+
+        FillGradientPrimitive2D::FillGradientPrimitive2D(
+            const basegfx::B2DRange& rOutputRange,
+            const attribute::FillGradientAttribute& rFillGradient)
+        :   maOutputRange(rOutputRange),
+            maDefinitionRange(rOutputRange),
+            maFillGradient(rFillGradient)
+        {
+        }
+
+        FillGradientPrimitive2D::FillGradientPrimitive2D(
+            const basegfx::B2DRange& rOutputRange,
+            const basegfx::B2DRange& rDefinitionRange,
+            const attribute::FillGradientAttribute& rFillGradient)
+        :   maOutputRange(rOutputRange),
+            maDefinitionRange(rDefinitionRange),
+            maFillGradient(rFillGradient)
+        {
+        }
+
+        bool FillGradientPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
+        {
+            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
+            {
+                const FillGradientPrimitive2D& rCompare = static_cast<const FillGradientPrimitive2D&>(rPrimitive);
+
+                return (getOutputRange() == rCompare.getOutputRange()
+                    && getDefinitionRange() == rCompare.getDefinitionRange()
+                    && getFillGradient() == rCompare.getFillGradient());
+            }
+
+            return false;
+        }
+
+        basegfx::B2DRange FillGradientPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
+        {
+            // return the geometrically visible area
+            return getOutputRange();
+        }
+
+        // provide unique ID
+        sal_uInt32 FillGradientPrimitive2D::getPrimitive2DID() const
+        {
+            return PRIMITIVE2D_ID_FILLGRADIENTPRIMITIVE2D;
+        }
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */