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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 <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(maSvgStyleAttributes);
+ }
+
+ void SvgImageNode::parseAttribute(SVGToken aSVGToken, const OUString& aContent)
+ {
+ // call parent
+ SvgNode::parseAttribute(aSVGToken, aContent);
+
+ // read style attributes
+ maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent);
+
+ // 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, 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(!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(
+ aBitmapEx,
+ basegfx::utils::createScaleTranslateB2DHomMatrix(
+ aViewBox.getRange(),
+ aViewBox.getMinimum()));
+ }
+
+ if(aNewTarget.empty())
+ return;
+
+ // 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: */
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