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, 356 insertions, 0 deletions

diff --git a/svgio/source/svgreader/svgimagenode.cxx b/svgio/source/svgreader/svgimagenode.cxx
new file mode 100644
index 000000000..1d6fd654b
--- /dev/null
+++ b/svgio/source/svgreader/svgimagenode.cxx
@@ -0,0 +1,356 @@
+/* -*- 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 <svgimagenode.hxx>
+#include <svgdocument.hxx>
+#include <tools/stream.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/graphicfilter.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <rtl/uri.hxx>
+#include <sal/log.hxx>
+#include <drawinglayer/geometry/viewinformation2d.hxx>
+#include <comphelper/base64.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+
+namespace svgio::svgreader
+{
+        SvgImageNode::SvgImageNode(
+            SvgDocument& rDocument,
+            SvgNode* pParent)
+        :   SvgNode(SVGToken::Rect, rDocument, pParent),
+            maSvgStyleAttributes(*this),
+            maX(0),
+            maY(0),
+            maWidth(0),
+            maHeight(0)
+        {
+        }
+
+        SvgImageNode::~SvgImageNode()
+        {
+        }
+
+        const SvgStyleAttributes* SvgImageNode::getSvgStyleAttributes() const
+        {
+            return checkForCssStyle("image", maSvgStyleAttributes);
+        }
+
+        void SvgImageNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
+        {
+            // call parent
+            SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
+
+            // read style attributes
+            maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent, false);
+
+            // parse own
+            switch(aSVGToken)
+            {
+                case SVGToken::Style:
+                {
+                    readLocalCssStyle(aContent);
+                    break;
+                }
+                case SVGToken::PreserveAspectRatio:
+                {
+                    maSvgAspectRatio = readSvgAspectRatio(aContent);
+                    break;
+                }
+                case SVGToken::Transform:
+                {
+                    const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
+
+                    if(!aMatrix.isIdentity())
+                    {
+                        setTransform(aMatrix);
+                    }
+                    break;
+                }
+                case SVGToken::X:
+                {
+                    SvgNumber aNum;
+
+                    if(readSingleNumber(aContent, aNum))
+                    {
+                        maX = aNum;
+                    }
+                    break;
+                }
+                case SVGToken::Y:
+                {
+                    SvgNumber aNum;
+
+                    if(readSingleNumber(aContent, aNum))
+                    {
+                        maY = aNum;
+                    }
+                    break;
+                }
+                case SVGToken::Width:
+                {
+                    SvgNumber aNum;
+
+                    if(readSingleNumber(aContent, aNum))
+                    {
+                        if(aNum.isPositive())
+                        {
+                            maWidth = aNum;
+                        }
+                    }
+                    break;
+                }
+                case SVGToken::Height:
+                {
+                    SvgNumber aNum;
+
+                    if(readSingleNumber(aContent, aNum))
+                    {
+                        if(aNum.isPositive())
+                        {
+                            maHeight = aNum;
+                        }
+                    }
+                    break;
+                }
+                case SVGToken::Href:
+                case SVGToken::XlinkHref:
+                {
+                    const sal_Int32 nLen(aContent.getLength());
+
+                    if(nLen)
+                    {
+                        readImageLink(aContent, maXLink, maUrl, maMimeType, maData);
+                    }
+                    break;
+                }
+                default:
+                {
+                    break;
+                }
+            }
+        }
+
+        static void extractFromGraphic(
+            const Graphic& rGraphic,
+            drawinglayer::primitive2d::Primitive2DContainer& rEmbedded,
+            basegfx::B2DRange& rViewBox,
+            BitmapEx& rBitmapEx)
+        {
+            if(GraphicType::Bitmap == rGraphic.GetType())
+            {
+                if(rGraphic.getVectorGraphicData())
+                {
+                    // embedded Svg
+                    rEmbedded = rGraphic.getVectorGraphicData()->getPrimitive2DSequence();
+
+                    // fill aViewBox
+                    rViewBox = rGraphic.getVectorGraphicData()->getRange();
+                }
+                else
+                {
+                    // get bitmap
+                    rBitmapEx = rGraphic.GetBitmapEx();
+                }
+            }
+            else
+            {
+                // evtl. convert to bitmap
+                rBitmapEx = rGraphic.GetBitmapEx();
+            }
+        }
+
+        void SvgImageNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool /*bReferenced*/) const
+        {
+            // get size range and create path
+            const SvgStyleAttributes* pStyle = getSvgStyleAttributes();
+
+            if(!(pStyle && getWidth().isSet() && getHeight().isSet()))
+                return;
+
+            const double fWidth(getWidth().solve(*this, NumberType::xcoordinate));
+            const double fHeight(getHeight().solve(*this, NumberType::ycoordinate));
+
+            if(fWidth <= 0.0 || fHeight <= 0.0)
+                return;
+
+            BitmapEx aBitmapEx;
+            drawinglayer::primitive2d::Primitive2DContainer aNewTarget;
+
+            // prepare Target and ViewBox for evtl. AspectRatio mappings
+            const double fX(getX().isSet() ? getX().solve(*this, NumberType::xcoordinate) : 0.0);
+            const double fY(getY().isSet() ? getY().solve(*this, NumberType::ycoordinate) : 0.0);
+            const basegfx::B2DRange aTarget(fX, fY, fX + fWidth, fY + fHeight);
+            basegfx::B2DRange aViewBox(aTarget);
+
+            if(!maMimeType.isEmpty() && !maData.isEmpty())
+            {
+                // use embedded base64 encoded data
+                css::uno::Sequence< sal_Int8 > aPass;
+                ::comphelper::Base64::decode(aPass, maData);
+
+                if(aPass.hasElements())
+                {
+                    SvMemoryStream aStream(aPass.getArray(), aPass.getLength(), StreamMode::READ);
+                    Graphic aGraphic;
+
+                    if(ERRCODE_NONE == GraphicFilter::GetGraphicFilter().ImportGraphic(
+                        aGraphic,
+                        u"",
+                        aStream))
+                    {
+                        extractFromGraphic(aGraphic, aNewTarget, aViewBox, aBitmapEx);
+                    }
+                }
+            }
+            else if(!maUrl.isEmpty())
+            {
+                const OUString& rPath = getDocument().getAbsolutePath();
+                OUString aAbsUrl;
+                try {
+                    aAbsUrl = rtl::Uri::convertRelToAbs(rPath, maUrl);
+                } catch (rtl::MalformedUriException & e) {
+                    SAL_WARN(
+                        "svg",
+                        "caught rtl::MalformedUriException \""
+                            << e.getMessage() << "\"");
+                }
+
+                if (!aAbsUrl.isEmpty() && rPath != aAbsUrl)
+                {
+                    SvFileStream aStream(aAbsUrl, StreamMode::STD_READ);
+                    Graphic aGraphic;
+
+                    if(ERRCODE_NONE == GraphicFilter::GetGraphicFilter().ImportGraphic(
+                           aGraphic,
+                           aAbsUrl,
+                           aStream))
+                    {
+                        extractFromGraphic(aGraphic, aNewTarget, aViewBox, aBitmapEx);
+                    }
+                }
+            }
+            else if(!maXLink.isEmpty())
+            {
+                const SvgNode* pXLink = getDocument().findSvgNodeById(maXLink);
+
+                if(pXLink && Display::None != pXLink->getDisplay())
+                {
+                    pXLink->decomposeSvgNode(aNewTarget, true);
+
+                    if(!aNewTarget.empty())
+                    {
+                        aViewBox = aNewTarget.getB2DRange(drawinglayer::geometry::ViewInformation2D());
+                    }
+                }
+            }
+
+            if(!aBitmapEx.IsEmpty() && 0 != aBitmapEx.GetSizePixel().Width()  && 0 != aBitmapEx.GetSizePixel().Height())
+            {
+                // calculate centered unit size
+                const double fAspectRatio = static_cast<double>(aBitmapEx.GetSizePixel().Width()) / static_cast<double>(aBitmapEx.GetSizePixel().Height());
+
+                if(basegfx::fTools::equal(fAspectRatio, 0.0))
+                {
+                    // use unit range
+                    aViewBox = basegfx::B2DRange(0.0, 0.0, 1.0, 1.0);
+                }
+                else if(basegfx::fTools::more(fAspectRatio, 0.0))
+                {
+                    // width bigger height
+                    const double fHalfHeight((1.0 / fAspectRatio) * 0.5);
+                    aViewBox = basegfx::B2DRange(
+                        0.0,
+                        0.5 - fHalfHeight,
+                        1.0,
+                        0.5 + fHalfHeight);
+                }
+                else
+                {
+                    // height bigger width
+                    const double fHalfWidth(fAspectRatio * 0.5);
+                    aViewBox = basegfx::B2DRange(
+                        0.5 - fHalfWidth,
+                        0.0,
+                        0.5 + fHalfWidth,
+                        1.0);
+                }
+
+                // create content from created bitmap, use calculated unit range size
+                // as transformation to map the picture data correctly
+                aNewTarget.resize(1);
+                aNewTarget[0] = new drawinglayer::primitive2d::BitmapPrimitive2D(
+                    VCLUnoHelper::CreateVCLXBitmap(aBitmapEx),
+                    basegfx::utils::createScaleTranslateB2DHomMatrix(
+                        aViewBox.getRange(),
+                        aViewBox.getMinimum()));
+            }
+
+            if(aNewTarget.empty())
+                return;
+
+            if(aTarget.equal(aViewBox))
+            {
+                // just add to rTarget
+                rTarget.append(aNewTarget);
+            }
+            else
+            {
+                // create mapping
+                const SvgAspectRatio& rRatio = maSvgAspectRatio;
+
+                // even when ratio is not set, use the defaults
+                // let mapping be created from SvgAspectRatio
+                const basegfx::B2DHomMatrix aEmbeddingTransform(rRatio.createMapping(aTarget, aViewBox));
+
+                if(!aEmbeddingTransform.isIdentity())
+                {
+                    const drawinglayer::primitive2d::Primitive2DReference xRef(
+                        new drawinglayer::primitive2d::TransformPrimitive2D(
+                            aEmbeddingTransform,
+                            std::move(aNewTarget)));
+
+                    aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xRef };
+                }
+
+                if(!rRatio.isMeetOrSlice())
+                {
+                    // need to embed in MaskPrimitive2D to ensure clipping
+                    const drawinglayer::primitive2d::Primitive2DReference xMask(
+                        new drawinglayer::primitive2d::MaskPrimitive2D(
+                            basegfx::B2DPolyPolygon(
+                                basegfx::utils::createPolygonFromRect(aTarget)),
+                            std::move(aNewTarget)));
+
+                    aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xMask };
+                }
+
+                // embed and add to rTarget, take local extra-transform into account
+                pStyle->add_postProcess(rTarget, std::move(aNewTarget), getTransform());
+            }
+        }
+
+} // end of namespace svgio::svgreader
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */