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, 370 insertions, 0 deletions

diff --git a/drawinglayer/source/primitive2d/patternfillprimitive2d.cxx b/drawinglayer/source/primitive2d/patternfillprimitive2d.cxx
new file mode 100644
index 000000000..b667545b5
--- /dev/null
+++ b/drawinglayer/source/primitive2d/patternfillprimitive2d.cxx
@@ -0,0 +1,370 @@
+/* -*- 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/patternfillprimitive2d.hxx>
+#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <texture/texture.hxx>
+#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
+#include <drawinglayer/geometry/viewinformation2d.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+
+#include <drawinglayer/converters.hxx>
+
+using namespace com::sun::star;
+
+#define MAXIMUM_SQUARE_LENGTH (186.0)
+#define MINIMUM_SQUARE_LENGTH (16.0)
+#define MINIMUM_TILES_LENGTH (3)
+
+namespace drawinglayer::primitive2d
+{
+        void PatternFillPrimitive2D::calculateNeededDiscreteBufferSize(
+            sal_uInt32& rWidth,
+            sal_uInt32& rHeight,
+            const geometry::ViewInformation2D& rViewInformation) const
+        {
+            // reset parameters
+            rWidth = rHeight = 0;
+
+            // check if resolution is in the range which may be buffered
+            const basegfx::B2DPolyPolygon& rMaskPolygon = getMask();
+            const basegfx::B2DRange aMaskRange(rMaskPolygon.getB2DRange());
+
+            // get discrete rounded up square size of a single tile
+            const basegfx::B2DHomMatrix aMaskRangeTransformation(
+                basegfx::utils::createScaleTranslateB2DHomMatrix(
+                    aMaskRange.getRange(),
+                    aMaskRange.getMinimum()));
+            const basegfx::B2DHomMatrix aTransform(
+                rViewInformation.getObjectToViewTransformation() * aMaskRangeTransformation);
+            const basegfx::B2DPoint aTopLeft(aTransform * getReferenceRange().getMinimum());
+            const basegfx::B2DPoint aX(aTransform * basegfx::B2DPoint(getReferenceRange().getMaxX(), getReferenceRange().getMinY()));
+            const basegfx::B2DPoint aY(aTransform * basegfx::B2DPoint(getReferenceRange().getMinX(), getReferenceRange().getMaxY()));
+            const double fW(basegfx::B2DVector(aX - aTopLeft).getLength());
+            const double fH(basegfx::B2DVector(aY - aTopLeft).getLength());
+            const double fSquare(fW * fH);
+
+            if(fSquare <= 0.0)
+                return;
+
+            // check if less than a maximum square pixels is used
+            static const sal_uInt32 fMaximumSquare(MAXIMUM_SQUARE_LENGTH * MAXIMUM_SQUARE_LENGTH);
+
+            if(fSquare >= fMaximumSquare)
+                return;
+
+            // calculate needed number of tiles and check if used more than a minimum count
+            const texture::GeoTexSvxTiled aTiling(getReferenceRange());
+            const sal_uInt32 nTiles(aTiling.getNumberOfTiles());
+            static const sal_uInt32 nMinimumTiles(MINIMUM_TILES_LENGTH * MINIMUM_TILES_LENGTH);
+
+            if(nTiles < nMinimumTiles)
+                return;
+
+            rWidth = basegfx::fround(ceil(fW));
+            rHeight = basegfx::fround(ceil(fH));
+            static const sal_uInt32 fMinimumSquare(MINIMUM_SQUARE_LENGTH * MINIMUM_SQUARE_LENGTH);
+
+            if(fSquare < fMinimumSquare)
+            {
+                const double fRel(fW/fH);
+                rWidth = basegfx::fround(sqrt(fMinimumSquare * fRel));
+                rHeight = basegfx::fround(sqrt(fMinimumSquare / fRel));
+            }
+        }
+
+        void PatternFillPrimitive2D::getTileSize(
+            sal_uInt32& rWidth,
+            sal_uInt32& rHeight,
+            const geometry::ViewInformation2D& rViewInformation) const
+        {
+            const basegfx::B2DRange aMaskRange(getMask().getB2DRange());
+
+            // get discrete rounded up square size of a single tile
+            const basegfx::B2DHomMatrix aMaskRangeTransformation(
+                basegfx::utils::createScaleTranslateB2DHomMatrix(
+                    aMaskRange.getRange(),
+                    aMaskRange.getMinimum()));
+            const basegfx::B2DHomMatrix aTransform(
+                rViewInformation.getObjectToViewTransformation() * aMaskRangeTransformation);
+            const basegfx::B2DPoint aTopLeft(aTransform * getReferenceRange().getMinimum());
+            const basegfx::B2DPoint aX(aTransform * basegfx::B2DPoint(getReferenceRange().getMaxX(), getReferenceRange().getMinY()));
+            const basegfx::B2DPoint aY(aTransform * basegfx::B2DPoint(getReferenceRange().getMinX(), getReferenceRange().getMaxY()));
+            const double fW(basegfx::B2DVector(aX - aTopLeft).getLength());
+            const double fH(basegfx::B2DVector(aY - aTopLeft).getLength());
+
+            rWidth = basegfx::fround(ceil(fW));
+            rHeight = basegfx::fround(ceil(fH));
+        }
+
+        Primitive2DContainer PatternFillPrimitive2D::createContent(const geometry::ViewInformation2D& rViewInformation) const
+        {
+            Primitive2DContainer aContent;
+
+            // see if buffering is wanted. If so, create buffered content in given resolution
+            if(0 != mnDiscreteWidth && 0 != mnDiscreteHeight)
+            {
+                const geometry::ViewInformation2D aViewInformation2D;
+                primitive2d::Primitive2DReference xEmbedRef(
+                    new primitive2d::TransformPrimitive2D(
+                        basegfx::utils::createScaleB2DHomMatrix(mnDiscreteWidth, mnDiscreteHeight),
+                        Primitive2DContainer(getChildren())));
+                primitive2d::Primitive2DContainer xEmbedSeq { xEmbedRef };
+
+                const BitmapEx aBitmapEx(
+                    convertToBitmapEx(
+                        std::move(xEmbedSeq),
+                        aViewInformation2D,
+                        mnDiscreteWidth,
+                        mnDiscreteHeight,
+                        mnDiscreteWidth * mnDiscreteHeight));
+
+                if(!aBitmapEx.IsEmpty())
+                {
+                    const Size& rBmpPix = aBitmapEx.GetSizePixel();
+
+                    if(rBmpPix.Width() > 0 && rBmpPix.Height() > 0)
+                    {
+                        const primitive2d::Primitive2DReference xEmbedRefBitmap(
+                            new primitive2d::BitmapPrimitive2D(
+                                VCLUnoHelper::CreateVCLXBitmap(aBitmapEx),
+                                basegfx::B2DHomMatrix()));
+                        aContent = primitive2d::Primitive2DContainer { xEmbedRefBitmap };
+                    }
+                }
+            }
+
+            if(aContent.empty())
+            {
+                // buffering was not tried or did fail - reset remembered buffered size
+                // in any case
+                PatternFillPrimitive2D* pThat = const_cast< PatternFillPrimitive2D* >(this);
+                pThat->mnDiscreteWidth = pThat->mnDiscreteHeight = 0;
+
+                // use children as default context
+                aContent = getChildren();
+
+                // check if content needs to be clipped
+                const basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
+                const basegfx::B2DRange aContentRange(aContent.getB2DRange(rViewInformation));
+
+                if(!aUnitRange.isInside(aContentRange))
+                {
+                    const Primitive2DReference xRef(
+                        new MaskPrimitive2D(
+                            basegfx::B2DPolyPolygon(basegfx::utils::createPolygonFromRect(aUnitRange)),
+                            std::move(aContent)));
+
+                    aContent = Primitive2DContainer { xRef };
+                }
+            }
+
+            return aContent;
+        }
+
+        //  create buffered content in given resolution
+        BitmapEx PatternFillPrimitive2D::createTileImage(sal_uInt32 nWidth, sal_uInt32 nHeight) const
+        {
+            const geometry::ViewInformation2D aViewInformation2D;
+            Primitive2DContainer aContent(createContent(aViewInformation2D));
+            const primitive2d::Primitive2DReference xEmbedRef(
+                    new primitive2d::TransformPrimitive2D(
+                        basegfx::utils::createScaleB2DHomMatrix(nWidth, nHeight),
+                        std::move(aContent)));
+            primitive2d::Primitive2DContainer xEmbedSeq { xEmbedRef };
+
+            return convertToBitmapEx(
+                        std::move(xEmbedSeq),
+                        aViewInformation2D,
+                        nWidth,
+                        nHeight,
+                        nWidth * nHeight);
+        }
+
+        void PatternFillPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const
+        {
+            Primitive2DContainer aRetval;
+
+            if(getChildren().empty())
+                return;
+
+            if(!(!getReferenceRange().isEmpty() && getReferenceRange().getWidth() > 0.0 && getReferenceRange().getHeight() > 0.0))
+                return;
+
+            const basegfx::B2DRange aMaskRange(getMask().getB2DRange());
+
+            if(!(!aMaskRange.isEmpty() && aMaskRange.getWidth() > 0.0 && aMaskRange.getHeight() > 0.0))
+                return;
+
+            // create tiling matrices
+            std::vector< basegfx::B2DHomMatrix > aMatrices;
+            texture::GeoTexSvxTiled aTiling(getReferenceRange());
+
+            aTiling.appendTransformations(aMatrices);
+
+            // create content
+            Primitive2DContainer aContent(createContent(rViewInformation));
+
+            // resize result
+            aRetval.resize(aMatrices.size());
+
+            // create one primitive for each matrix
+            for(size_t a(0); a < aMatrices.size(); a++)
+            {
+                aRetval[a] = new TransformPrimitive2D(
+                    aMatrices[a],
+                    Primitive2DContainer(aContent));
+            }
+
+            // transform result which is in unit coordinates to mask's object coordinates
+            {
+                const basegfx::B2DHomMatrix aMaskTransform(
+                    basegfx::utils::createScaleTranslateB2DHomMatrix(
+                        aMaskRange.getRange(),
+                        aMaskRange.getMinimum()));
+
+                Primitive2DReference xRef(
+                    new TransformPrimitive2D(
+                        aMaskTransform,
+                        std::move(aRetval)));
+
+                aRetval = Primitive2DContainer { xRef };
+            }
+
+            // embed result in mask
+            {
+                rContainer.push_back(
+                    new MaskPrimitive2D(
+                        getMask(),
+                        std::move(aRetval)));
+            }
+        }
+
+        PatternFillPrimitive2D::PatternFillPrimitive2D(
+            const basegfx::B2DPolyPolygon& rMask,
+            Primitive2DContainer&& rChildren,
+            const basegfx::B2DRange& rReferenceRange)
+        :   maMask(rMask),
+            maChildren(std::move(rChildren)),
+            maReferenceRange(rReferenceRange),
+            mnDiscreteWidth(0),
+            mnDiscreteHeight(0)
+        {
+        }
+
+        bool PatternFillPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
+        {
+            if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
+            {
+                const PatternFillPrimitive2D& rCompare = static_cast< const PatternFillPrimitive2D& >(rPrimitive);
+
+                return (getMask() == rCompare.getMask()
+                    && getChildren() == rCompare.getChildren()
+                    && getReferenceRange() == rCompare.getReferenceRange());
+            }
+
+            return false;
+        }
+
+        basegfx::B2DRange PatternFillPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /* rViewInformation */ ) const
+        {
+            return getMask().getB2DRange();
+        }
+
+        void PatternFillPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
+        {
+            // The existing buffered decomposition uses a buffer in the remembered
+            // size or none if sizes are zero. Get new needed sizes which depend on
+            // the given ViewInformation
+            bool bResetBuffering = false;
+            sal_uInt32 nW(0);
+            sal_uInt32 nH(0);
+            calculateNeededDiscreteBufferSize(nW, nH, rViewInformation);
+            const bool bBufferingCurrentlyUsed(0 != mnDiscreteWidth && 0 != mnDiscreteHeight);
+            const bool bBufferingNextUsed(0 != nW && 0 != nH);
+
+            if(bBufferingNextUsed)
+            {
+                // buffering is now possible
+                if(bBufferingCurrentlyUsed)
+                {
+                    if(nW > mnDiscreteWidth || nH > mnDiscreteHeight)
+                    {
+                        // Higher resolution is needed than used in the existing buffered
+                        // decomposition - create new one
+                        bResetBuffering = true;
+                    }
+                    else if(double(nW * nH) / double(mnDiscreteWidth * mnDiscreteHeight) <= 0.5)
+                    {
+                        // Size has shrunk for 50% or more - it's worth to refresh the buffering
+                        // to spare some resources
+                        bResetBuffering = true;
+                    }
+                }
+                else
+                {
+                    // currently no buffering used - reset evtl. unbuffered
+                    // decomposition to start buffering
+                    bResetBuffering = true;
+                }
+            }
+            else
+            {
+                // buffering is no longer possible
+                if(bBufferingCurrentlyUsed)
+                {
+                    // reset decomposition to allow creation of unbuffered one
+                    bResetBuffering = true;
+                }
+            }
+
+            if(bResetBuffering)
+            {
+                PatternFillPrimitive2D* pThat = const_cast< PatternFillPrimitive2D* >(this);
+                pThat->mnDiscreteWidth = nW;
+                pThat->mnDiscreteHeight = nH;
+                pThat->setBuffered2DDecomposition(Primitive2DContainer());
+            }
+
+            // call parent
+            BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
+        }
+
+        sal_Int64 PatternFillPrimitive2D::estimateUsage()
+        {
+            size_t nRet(0);
+            for (auto& it : getChildren())
+                if (it)
+                    nRet += it->estimateUsage();
+            return nRet;
+        }
+
+        // provide unique ID
+        sal_uInt32 PatternFillPrimitive2D::getPrimitive2DID() const
+        {
+            return PRIMITIVE2D_ID_PATTERNFILLPRIMITIVE2D;
+        }
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */