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diff --git a/svgio/source/svgreader/svgsvgnode.cxx b/svgio/source/svgreader/svgsvgnode.cxx
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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 <svgsvgnode.hxx>
+#include <drawinglayer/geometry/viewinformation2d.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <drawinglayer/primitive2d/PolygonHairlinePrimitive2D.hxx>
+#include <drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx>
+#include <o3tl/unit_conversion.hxx>
+#include <svgdocument.hxx>
+
+namespace svgio::svgreader
+{
+ SvgSvgNode::SvgSvgNode(
+ SvgDocument& rDocument,
+ SvgNode* pParent)
+ : SvgNode(SVGToken::Svg, rDocument, pParent),
+ maSvgStyleAttributes(*this),
+ mbStyleAttributesInitialized(false) // #i125258#
+ {
+ }
+
+ // #i125258#
+ void SvgSvgNode::initializeStyleAttributes()
+ {
+ if(mbStyleAttributesInitialized)
+ return;
+
+ // #i125258# determine if initial values need to be initialized with hard values
+ // for the case that this is the outmost SVG statement and it has no parent
+ // stale (CssStyle for svg may be defined)
+ bool bSetInitialValues(true);
+
+ if(getParent())
+ {
+ // #i125258# no initial values when it's a SVG element embedded in SVG
+ bSetInitialValues = false;
+ }
+
+ if(bSetInitialValues)
+ {
+ const SvgStyleAttributes* pStyles = getSvgStyleAttributes();
+
+ if(pStyles && pStyles->getParentStyle())
+ {
+ // SVG has a parent style (probably CssStyle), check if fill is set there anywhere
+ // already. If yes, do not set the default fill (black)
+ bool bFillSet(false);
+ const SvgStyleAttributes* pParentStyle = pStyles->getParentStyle();
+
+ while(pParentStyle && !bFillSet)
+ {
+ bFillSet = pParentStyle->isFillSet();
+ pParentStyle = pParentStyle->getParentStyle();
+ }
+
+ if(bFillSet)
+ {
+ // #125258# no initial values when SVG has a parent style at which a fill
+ // is already set
+ bSetInitialValues = false;
+ }
+ }
+ }
+
+ if(bSetInitialValues)
+ {
+ // #i125258# only set if not yet initialized (SvgSvgNode::parseAttribute is already done,
+ // just setting may revert an already set valid value)
+ if(!maSvgStyleAttributes.isFillSet())
+ {
+ // #i125258# initial fill is black (see SVG1.1 spec)
+ maSvgStyleAttributes.setFill(SvgPaint(basegfx::BColor(0.0, 0.0, 0.0), true, true));
+ }
+ }
+
+ mbStyleAttributesInitialized = true;
+ }
+
+ SvgSvgNode::~SvgSvgNode()
+ {
+ }
+
+ const SvgStyleAttributes* SvgSvgNode::getSvgStyleAttributes() const
+ {
+ // #i125258# svg node can have CssStyles, too, so check for it here
+ return checkForCssStyle("svg", maSvgStyleAttributes);
+ }
+
+ void SvgSvgNode::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::ViewBox:
+ {
+ const basegfx::B2DRange aRange(readViewBox(aContent, *this));
+
+ if(!aRange.isEmpty())
+ {
+ setViewBox(&aRange);
+ }
+ break;
+ }
+ case SVGToken::PreserveAspectRatio:
+ {
+ maSvgAspectRatio = readSvgAspectRatio(aContent);
+ 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::Version:
+ {
+ SvgNumber aNum;
+
+ if(readSingleNumber(aContent, aNum))
+ {
+ maVersion = aNum;
+ }
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+ }
+
+ void SvgSvgNode::seekReferenceWidth(double& fWidth, bool& bHasFound) const
+ {
+ if (!getParent() || bHasFound)
+ {
+ return;
+ }
+ const SvgSvgNode* pParentSvgSvgNode = nullptr;
+ // enclosing svg might have relative width, need to cumulate them till they are
+ // resolved somewhere up in the node tree
+ double fPercentage(1.0);
+ for(const SvgNode* pParent = getParent(); pParent && !bHasFound; pParent = pParent->getParent())
+ {
+ // dynamic_cast results Null-pointer for not SvgSvgNode and so skips them in if condition
+ pParentSvgSvgNode = dynamic_cast< const SvgSvgNode* >(pParent);
+ if (pParentSvgSvgNode)
+ {
+ if (pParentSvgSvgNode->getViewBox())
+ {
+ // viewbox values are already in 'user unit'.
+ fWidth = pParentSvgSvgNode->getViewBox()->getWidth() * fPercentage;
+ bHasFound = true;
+ }
+ else
+ {
+ // take absolute value or cumulate percentage
+ if (pParentSvgSvgNode->getWidth().isSet())
+ {
+ if (SvgUnit::percent == pParentSvgSvgNode->getWidth().getUnit())
+ {
+ fPercentage *= pParentSvgSvgNode->getWidth().getNumber() * 0.01;
+ }
+ else
+ {
+ fWidth = pParentSvgSvgNode->getWidth().solveNonPercentage(*pParentSvgSvgNode) * fPercentage;
+ bHasFound = true;
+ }
+ } // not set => width=100% => factor 1, no need for else
+ }
+ }
+ }
+ }
+
+ void SvgSvgNode::seekReferenceHeight(double& fHeight, bool& bHasFound) const
+ {
+ if (!getParent() || bHasFound)
+ {
+ return;
+ }
+ const SvgSvgNode* pParentSvgSvgNode = nullptr;
+ // enclosing svg might have relative width and height, need to cumulate them till they are
+ // resolved somewhere up in the node tree
+ double fPercentage(1.0);
+ for(const SvgNode* pParent = getParent(); pParent && !bHasFound; pParent = pParent->getParent())
+ {
+ // dynamic_cast results Null-pointer for not SvgSvgNode and so skips them in if condition
+ pParentSvgSvgNode = dynamic_cast< const SvgSvgNode* >(pParent);
+ if (pParentSvgSvgNode)
+ {
+ if (pParentSvgSvgNode->getViewBox())
+ {
+ // viewbox values are already in 'user unit'.
+ fHeight = pParentSvgSvgNode->getViewBox()->getHeight() * fPercentage;
+ bHasFound = true;
+ }
+ else
+ {
+ // take absolute value or cumulate percentage
+ if (pParentSvgSvgNode->getHeight().isSet())
+ {
+ if (SvgUnit::percent == pParentSvgSvgNode->getHeight().getUnit())
+ {
+ fPercentage *= pParentSvgSvgNode->getHeight().getNumber() * 0.01;
+ }
+ else
+ {
+ fHeight = pParentSvgSvgNode->getHeight().solveNonPercentage(*pParentSvgSvgNode) * fPercentage;
+ bHasFound = true;
+ }
+ } // not set => height=100% => factor 1, no need for else
+ }
+ }
+ }
+ }
+
+// ToDo: Consider attribute overflow in method decomposeSvgNode
+ void SvgSvgNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const
+ {
+ drawinglayer::primitive2d::Primitive2DContainer aSequence;
+
+ // #i125258# check now if we need to init some style settings locally. Do not do this
+ // in the constructor, there is not yet information e.g. about existing CssStyles.
+ // Here all nodes are read and interpreted
+ const_cast< SvgSvgNode* >(this)->initializeStyleAttributes();
+
+ // decompose children
+ SvgNode::decomposeSvgNode(aSequence, bReferenced);
+
+ if(!aSequence.empty())
+ {
+ if(getParent())
+ {
+ // #i122594# if width/height is not given, it's 100% (see 5.1.2 The 'svg' element in SVG1.1 spec).
+ // If it is relative, the question is to what. The previous implementation assumed relative to the
+ // local ViewBox which is implied by (4.2 Basic data types):
+
+ // "Note that the non-property <length> definition also allows a percentage unit identifier.
+ // The meaning of a percentage length value depends on the attribute for which the percentage
+ // length value has been specified. Two common cases are: (a) when a percentage length value
+ // represents a percentage of the viewport width or height (refer to the section that discusses
+ // units in general), and (b) when a percentage length value represents a percentage of the
+ // bounding box width or height on a given object (refer to the section that describes object
+ // bounding box units)."
+
+ // Comparisons with common browsers show that it's mostly interpreted relative to the viewport
+ // of the parent, and so does the new implementation.
+
+ // Extract known viewport data
+ // bXXXIsAbsolute tracks whether relative values could be resolved to absolute values
+
+ // If width or height is not provided, the default 100% is used, see SVG 1.1 section 5.1.2
+ // value 0.0 here is only to initialize variable
+ bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
+ double fW( bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : 0.0);
+
+ bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
+ double fH( bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : 0.0);
+
+ // If x or y not provided, then default 0.0 is used, see SVG 1.1 Section 5.1.2
+ bool bXIsAbsolute((getX().isSet() && SvgUnit::percent != getX().getUnit()) || !getX().isSet());
+ double fX( bXIsAbsolute && getX().isSet() ? getX().solveNonPercentage(*this) : 0.0);
+
+ bool bYIsAbsolute((getY().isSet() && SvgUnit::percent != getY().getUnit()) || !getY().isSet());
+ double fY( bYIsAbsolute && getY().isSet() ? getY().solveNonPercentage(*this) : 0.0);
+
+ if ( !bXIsAbsolute || !bWidthIsAbsolute)
+ {
+ // get width of enclosing svg and resolve percentage in x and width;
+ double fWReference(0.0);
+ bool bHasFoundWidth(false);
+ seekReferenceWidth(fWReference, bHasFoundWidth);
+ if (!bHasFoundWidth)
+ {
+ if (getViewBox())
+ {
+ fWReference = getViewBox()->getWidth();
+ }
+ else
+ {
+ // Even outermost svg has not all information to resolve relative values,
+ // I use content itself as fallback to set missing values for viewport
+ // Any better idea for such ill structured svg documents?
+ const basegfx::B2DRange aChildRange(
+ aSequence.getB2DRange(
+ drawinglayer::geometry::ViewInformation2D()));
+ fWReference = aChildRange.getWidth();
+ }
+ }
+ // referenced values are already in 'user unit'
+ if (!bXIsAbsolute)
+ {
+ fX = getX().getNumber() * 0.01 * fWReference;
+ }
+ if (!bWidthIsAbsolute)
+ {
+ fW = (getWidth().isSet() ? getWidth().getNumber() *0.01 : 1.0) * fWReference;
+ }
+ }
+
+ if ( !bYIsAbsolute || !bHeightIsAbsolute)
+ {
+ // get height of enclosing svg and resolve percentage in y and height
+ double fHReference(0.0);
+ bool bHasFoundHeight(false);
+ seekReferenceHeight(fHReference, bHasFoundHeight);
+ if (!bHasFoundHeight)
+ {
+ if (getViewBox())
+ {
+ fHReference = getViewBox()->getHeight();
+ }
+ else
+ {
+ // Even outermost svg has not all information to resolve relative values,
+ // I use content itself as fallback to set missing values for viewport
+ // Any better idea for such ill structured svg documents?
+ const basegfx::B2DRange aChildRange(
+ aSequence.getB2DRange(
+ drawinglayer::geometry::ViewInformation2D()));
+ fHReference = aChildRange.getHeight();
+ }
+ }
+
+ // referenced values are already in 'user unit'
+ if (!bYIsAbsolute)
+ {
+ fY = getY().getNumber() * 0.01 * fHReference;
+ }
+ if (!bHeightIsAbsolute)
+ {
+ fH = (getHeight().isSet() ? getHeight().getNumber() *0.01 : 1.0) * fHReference;
+ }
+ }
+
+ if(getViewBox())
+ {
+ // SVG 1.1 defines in section 7.7 that a negative value for width or height
+ // in viewBox is an error and that 0.0 disables rendering
+ if(basegfx::fTools::more(getViewBox()->getWidth(),0.0) && basegfx::fTools::more(getViewBox()->getHeight(),0.0))
+ {
+ // create target range homing x,y, width and height as calculated above
+ const basegfx::B2DRange aTarget(fX, fY, fX + fW, fY + fH);
+
+ if(aTarget.equal(*getViewBox()))
+ {
+ // no mapping needed, append
+ rTarget.append(aSequence);
+ }
+ else
+ {
+ // create mapping
+ // #i122610 SVG 1.1 defines in section 5.1.2 that if the attribute preserveAspectRatio is not specified,
+ // then the effect is as if a value of 'xMidYMid meet' were specified.
+ SvgAspectRatio aRatioDefault(SvgAlign::xMidYMid,true);
+ const SvgAspectRatio& rRatio = getSvgAspectRatio().isSet()? getSvgAspectRatio() : aRatioDefault;
+
+ // let mapping be created from SvgAspectRatio
+ const basegfx::B2DHomMatrix aEmbeddingTransform(
+ rRatio.createMapping(aTarget, *getViewBox()));
+
+ // prepare embedding in transformation
+ const drawinglayer::primitive2d::Primitive2DReference xRef(
+ new drawinglayer::primitive2d::TransformPrimitive2D(
+ aEmbeddingTransform,
+ drawinglayer::primitive2d::Primitive2DContainer(aSequence)));
+
+ if(rRatio.isMeetOrSlice())
+ {
+ // embed in transformation
+ rTarget.push_back(xRef);
+ }
+ else
+ {
+ // need to embed in MaskPrimitive2D, too
+ const drawinglayer::primitive2d::Primitive2DReference xMask(
+ new drawinglayer::primitive2d::MaskPrimitive2D(
+ basegfx::B2DPolyPolygon(basegfx::utils::createPolygonFromRect(aTarget)),
+ drawinglayer::primitive2d::Primitive2DContainer { xRef }));
+
+ rTarget.push_back(xMask);
+ }
+ }
+ }
+ }
+ else // no viewBox attribute
+ {
+ // Svg defines that a negative value is an error and that 0.0 disables rendering
+ if(basegfx::fTools::more(fW, 0.0) && basegfx::fTools::more(fH, 0.0))
+ {
+ if(!basegfx::fTools::equalZero(fX) || !basegfx::fTools::equalZero(fY))
+ {
+ // embed in transform
+ const drawinglayer::primitive2d::Primitive2DReference xRef(
+ new drawinglayer::primitive2d::TransformPrimitive2D(
+ basegfx::utils::createTranslateB2DHomMatrix(fX, fY),
+ std::move(aSequence)));
+
+ aSequence = drawinglayer::primitive2d::Primitive2DContainer { xRef, };
+ }
+
+ // embed in MaskPrimitive2D to clip
+ const drawinglayer::primitive2d::Primitive2DReference xMask(
+ new drawinglayer::primitive2d::MaskPrimitive2D(
+ basegfx::B2DPolyPolygon(
+ basegfx::utils::createPolygonFromRect(
+ basegfx::B2DRange(fX, fY, fX + fW, fY + fH))),
+ drawinglayer::primitive2d::Primitive2DContainer(aSequence)));
+
+ // append
+ rTarget.push_back(xMask);
+ }
+ }
+ }
+ else // Outermost SVG element
+ {
+ // Svg defines that a negative value is an error and that 0.0 disables rendering
+ // isPositive() not usable because it allows 0.0 in contrast to mathematical definition of 'positive'
+ const bool bWidthInvalid(getWidth().isSet() && basegfx::fTools::lessOrEqual(getWidth().getNumber(), 0.0));
+ const bool bHeightInvalid(getHeight().isSet() && basegfx::fTools::lessOrEqual(getHeight().getNumber(), 0.0));
+ if(!bWidthInvalid && !bHeightInvalid)
+ {
+ basegfx::B2DRange aSvgCanvasRange; // viewport
+ double fW = 0.0; // dummy values
+ double fH = 0.0;
+ if (const basegfx::B2DRange* pBox = getViewBox())
+ {
+ // SVG 1.1 defines in section 7.7 that a negative value for width or height
+ // in viewBox is an error and that 0.0 disables rendering
+ const double fViewBoxWidth = pBox->getWidth();
+ const double fViewBoxHeight = pBox->getHeight();
+ if(basegfx::fTools::more(fViewBoxWidth,0.0) && basegfx::fTools::more(fViewBoxHeight,0.0))
+ {
+ // The intrinsic aspect ratio of the svg element is given by absolute values of svg width and svg height
+ // or by the width and height of the viewBox, if svg width or svg height is relative.
+ // see SVG 1.1 section 7.12
+ bool bNeedsMapping(true);
+ const bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
+ const bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
+ const double fViewBoxRatio(fViewBoxWidth/fViewBoxHeight);
+ if(bWidthIsAbsolute && bHeightIsAbsolute)
+ {
+ fW = getWidth().solveNonPercentage(*this);
+ fH = getHeight().solveNonPercentage(*this);
+ aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
+ }
+ else if (bWidthIsAbsolute)
+ {
+ fW = getWidth().solveNonPercentage(*this);
+ fH = fW / fViewBoxRatio ;
+ aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
+ }
+ else if (bHeightIsAbsolute)
+ {
+ fH = getHeight().solveNonPercentage(*this);
+ fW = fH * fViewBoxRatio ;
+ aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
+ }
+ else
+ {
+ // There exists no parent to resolve relative width or height.
+ // Use child size as fallback and expand to aspect ratio given
+ // by the viewBox. No mapping.
+ // We get viewport >= content, therefore no clipping.
+ bNeedsMapping = false;
+
+ const double fChildWidth(pBox->getWidth());
+ const double fChildHeight(pBox->getHeight());
+ const double fLeft(pBox->getMinX());
+ const double fTop(pBox->getMinY());
+ if ( fChildWidth / fViewBoxWidth > fChildHeight / fViewBoxHeight )
+ { // expand y
+ fW = fChildWidth;
+ fH = fChildWidth / fViewBoxRatio;
+ }
+ else
+ { // expand x
+ fH = fChildHeight;
+ fW = fChildHeight * fViewBoxRatio;
+ }
+ aSvgCanvasRange = basegfx::B2DRange(fLeft, fTop, fLeft + fW, fTop + fH);
+ }
+
+ if (bNeedsMapping)
+ {
+ // create mapping
+ // SVG 1.1 defines in section 5.1.2 that if the attribute preserveAspectRatio is not specified,
+ // then the effect is as if a value of 'xMidYMid meet' were specified.
+ SvgAspectRatio aRatioDefault(SvgAlign::xMidYMid, true);
+ const SvgAspectRatio& rRatio = getSvgAspectRatio().isSet()? getSvgAspectRatio() : aRatioDefault;
+
+ basegfx::B2DHomMatrix aViewBoxMapping = rRatio.createMapping(aSvgCanvasRange, *pBox);
+ // no need to check ratio here for slice, the outermost Svg will
+ // be clipped anyways (see below)
+
+ // scale content to viewBox definitions
+ const drawinglayer::primitive2d::Primitive2DReference xTransform(
+ new drawinglayer::primitive2d::TransformPrimitive2D(
+ aViewBoxMapping,
+ std::move(aSequence)));
+
+ aSequence = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
+ }
+ }
+ }
+ else // no viewbox => no mapping
+ {
+ const bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
+ const bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
+ if (bWidthIsAbsolute && bHeightIsAbsolute)
+ {
+ fW =getWidth().solveNonPercentage(*this);
+ fH =getHeight().solveNonPercentage(*this);
+ aSvgCanvasRange = basegfx::B2DRange(0.0, 0.0, fW, fH);
+ }
+ else
+ {
+ // There exists no parent to resolve relative width or height.
+ // Use child size as fallback. We get viewport >= content, therefore no clipping.
+ const basegfx::B2DRange aChildRange(
+ aSequence.getB2DRange(
+ drawinglayer::geometry::ViewInformation2D()));
+ const double fChildWidth(aChildRange.getWidth());
+ const double fChildHeight(aChildRange.getHeight());
+ const double fChildLeft(aChildRange.getMinX());
+ const double fChildTop(aChildRange.getMinY());
+ fW = bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : fChildWidth;
+ fH = bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : fChildHeight;
+ const double fLeft(bWidthIsAbsolute ? 0.0 : fChildLeft);
+ const double fTop(bHeightIsAbsolute ? 0.0 : fChildTop);
+ aSvgCanvasRange = basegfx::B2DRange(fLeft, fTop, fLeft+fW, fTop+fH);
+ }
+
+ }
+
+ // to be completely correct in Svg sense it is necessary to clip
+ // the whole content to the given canvas. I choose here to do this
+ // initially despite I found various examples of Svg files out there
+ // which have no correct values for this clipping. It's correct
+ // due to the Svg spec.
+
+ // different from Svg we have the possibility with primitives to get
+ // a correct bounding box for the geometry. Get it for evtl. taking action
+ const basegfx::B2DRange aContentRange(
+ aSequence.getB2DRange(
+ drawinglayer::geometry::ViewInformation2D()));
+
+ if(aSvgCanvasRange.isInside(aContentRange))
+ {
+ // no clip needed, but an invisible HiddenGeometryPrimitive2D
+ // to allow getting the full Svg range using the primitive mechanisms.
+ // This is needed since e.g. an SdrObject using this as graphic will
+ // create a mapping transformation to exactly map the content to its
+ // real life size
+ const drawinglayer::primitive2d::Primitive2DReference xLine(
+ new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(
+ basegfx::utils::createPolygonFromRect(
+ aSvgCanvasRange),
+ basegfx::BColor(0.0, 0.0, 0.0)));
+ const drawinglayer::primitive2d::Primitive2DReference xHidden(
+ new drawinglayer::primitive2d::HiddenGeometryPrimitive2D(
+ drawinglayer::primitive2d::Primitive2DContainer { xLine }));
+
+ aSequence.push_back(xHidden);
+ }
+ else if(aSvgCanvasRange.overlaps(aContentRange))
+ {
+ // Clip is necessary. This will make Svg images evtl. smaller
+ // than wanted from Svg (the free space which may be around it is
+ // conform to the Svg spec), but avoids an expensive and unnecessary
+ // clip. Keep the full Svg range here to get the correct mappings
+ // to objects using this. Optimizations can be done in the processors
+ const drawinglayer::primitive2d::Primitive2DReference xMask(
+ new drawinglayer::primitive2d::MaskPrimitive2D(
+ basegfx::B2DPolyPolygon(
+ basegfx::utils::createPolygonFromRect(
+ aSvgCanvasRange)),
+ std::move(aSequence)));
+
+ aSequence = drawinglayer::primitive2d::Primitive2DContainer { xMask };
+ }
+ else
+ {
+ // not inside, no overlap. Empty Svg
+ aSequence.clear();
+ }
+
+ if(!aSequence.empty())
+ {
+ // Another correction:
+ // If no Width/Height is set (usually done in
+ // <svg ... width="215.9mm" height="279.4mm" >) which
+ // is the case for own-Impress-exports, assume that
+ // the Units are already 100ThMM.
+ // Maybe only for own-Impress-exports, thus may need to be
+ // &&ed with getDocument().findSvgNodeById("ooo:meta_slides"),
+ // but does not need to be.
+ bool bEmbedInFinalTransformPxTo100ThMM(true);
+
+ if(getDocument().findSvgNodeById("ooo:meta_slides")
+ && !getWidth().isSet()
+ && !getHeight().isSet())
+ {
+ bEmbedInFinalTransformPxTo100ThMM = false;
+ }
+
+ if(bEmbedInFinalTransformPxTo100ThMM)
+ {
+ // embed in transform primitive to scale to 1/100th mm
+ // to get from Svg coordinates (px) to drawinglayer coordinates
+ constexpr double fScaleTo100thmm(o3tl::convert(1.0, o3tl::Length::px, o3tl::Length::mm100));
+ const basegfx::B2DHomMatrix aTransform(
+ basegfx::utils::createScaleB2DHomMatrix(
+ fScaleTo100thmm,
+ fScaleTo100thmm));
+
+ const drawinglayer::primitive2d::Primitive2DReference xTransform(
+ new drawinglayer::primitive2d::TransformPrimitive2D(
+ aTransform,
+ std::move(aSequence)));
+
+ aSequence = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
+ }
+
+ // append to result
+ rTarget.append(aSequence);
+ }
+ }
+ }
+ }
+
+ if(!(aSequence.empty() && !getParent() && getViewBox()))
+ return;
+
+ // tdf#118232 No geometry, Outermost SVG element and we have a ViewBox.
+ // Create a HiddenGeometry Primitive containing an expanded
+ // hairline geometry to have the size contained
+ const drawinglayer::primitive2d::Primitive2DReference xLine(
+ new drawinglayer::primitive2d::PolygonHairlinePrimitive2D(
+ basegfx::utils::createPolygonFromRect(
+ *getViewBox()),
+ basegfx::BColor(0.0, 0.0, 0.0)));
+ const drawinglayer::primitive2d::Primitive2DReference xHidden(
+ new drawinglayer::primitive2d::HiddenGeometryPrimitive2D(
+ drawinglayer::primitive2d::Primitive2DContainer { xLine }));
+
+ rTarget.push_back(xHidden);
+ }
+
+ basegfx::B2DRange SvgSvgNode::getCurrentViewPort() const
+ {
+ if(getViewBox())
+ {
+ return *(getViewBox());
+ }
+ else // viewport should be given by x, y, width, and height
+ {
+ // Extract known viewport data
+ // bXXXIsAbsolute tracks whether relative values could be resolved to absolute values
+ if (getParent())
+ {
+ // If width or height is not provided, the default 100% is used, see SVG 1.1 section 5.1.2
+ // value 0.0 here is only to initialize variable
+ bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
+ double fW( bWidthIsAbsolute ? getWidth().solveNonPercentage(*this) : 0.0);
+ bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
+ double fH( bHeightIsAbsolute ? getHeight().solveNonPercentage(*this) : 0.0);
+
+ // If x or y not provided, then default 0.0 is used, see SVG 1.1 Section 5.1.2
+ bool bXIsAbsolute((getX().isSet() && SvgUnit::percent != getX().getUnit()) || !getX().isSet());
+ double fX( bXIsAbsolute && getX().isSet() ? getX().solveNonPercentage(*this) : 0.0);
+
+ bool bYIsAbsolute((getY().isSet() && SvgUnit::percent != getY().getUnit()) || !getY().isSet());
+ double fY( bYIsAbsolute && getY().isSet() ? getY().solveNonPercentage(*this) : 0.0);
+
+ if (bXIsAbsolute && bYIsAbsolute && bWidthIsAbsolute && bHeightIsAbsolute)
+ {
+ return basegfx::B2DRange(fX, fY, fX+fW, fY+fH);
+ }
+ else // try to resolve relative values
+ {
+ if (!bXIsAbsolute || !bWidthIsAbsolute)
+ {
+ // get width of enclosing svg and resolve percentage in x and width
+ double fWReference(0.0);
+ bool bHasFoundWidth(false);
+ seekReferenceWidth(fWReference, bHasFoundWidth);
+ // referenced values are already in 'user unit'
+ if (!bXIsAbsolute && bHasFoundWidth)
+ {
+ fX = getX().getNumber() * 0.01 * fWReference;
+ bXIsAbsolute = true;
+ }
+ if (!bWidthIsAbsolute && bHasFoundWidth)
+ {
+ fW = (getWidth().isSet() ? getWidth().getNumber() *0.01 : 1.0) * fWReference;
+ bWidthIsAbsolute = true;
+ }
+ }
+ if (!bYIsAbsolute || !bHeightIsAbsolute)
+ {
+ // get height of enclosing svg and resolve percentage in y and height
+ double fHReference(0.0);
+ bool bHasFoundHeight(false);
+ seekReferenceHeight(fHReference, bHasFoundHeight);
+ // referenced values are already in 'user unit'
+ if (!bYIsAbsolute && bHasFoundHeight)
+ {
+ fY = getY().getNumber() * 0.01 * fHReference;
+ bYIsAbsolute = true;
+ }
+ if (!bHeightIsAbsolute && bHasFoundHeight)
+ {
+ fH = (getHeight().isSet() ? getHeight().getNumber() *0.01 : 1.0) * fHReference;
+ bHeightIsAbsolute = true;
+ }
+ }
+
+ if (bXIsAbsolute && bYIsAbsolute && bWidthIsAbsolute && bHeightIsAbsolute)
+ {
+ return basegfx::B2DRange(fX, fY, fX+fW, fY+fH);
+ }
+ else // relative values could not be resolved, there exists no fallback
+ {
+ return SvgNode::getCurrentViewPort();
+ }
+ }
+ }
+ else //outermost svg
+ {
+ // If width or height is not provided, the default would be 100%, see SVG 1.1 section 5.1.2
+ // But here it cannot be resolved and no fallback exists.
+ // SVG 1.1 defines in section 5.1.2 that x,y has no meaning for the outermost SVG element.
+ bool bWidthIsAbsolute(getWidth().isSet() && SvgUnit::percent != getWidth().getUnit());
+ bool bHeightIsAbsolute(getHeight().isSet() && SvgUnit::percent != getHeight().getUnit());
+ if (bWidthIsAbsolute && bHeightIsAbsolute)
+ {
+ double fW( getWidth().solveNonPercentage(*this) );
+ double fH( getHeight().solveNonPercentage(*this) );
+ return basegfx::B2DRange(0.0, 0.0, fW, fH);
+ }
+ else // no fallback exists
+ {
+ return SvgNode::getCurrentViewPort();
+ }
+ }
+// TODO: Is it possible to decompose and use the bounding box of the children, if even the
+// outermost svg has no information to resolve percentage? Is it worth, how expensive is it?
+
+ }
+ }
+
+} // end of namespace svgio
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */