/************************************************************** * * 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 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ // MARKER(update_precomp.py): autogen include statement, do not remove #include "precompiled_svgio.hxx" #include #include #include #include #include #include #include #include #include ////////////////////////////////////////////////////////////////////////////// namespace svgio { namespace svgreader { SvgSvgNode::SvgSvgNode( SvgDocument& rDocument, SvgNode* pParent) : SvgNode(SVGTokenSvg, rDocument, pParent), maSvgStyleAttributes(*this), mpViewBox(0), maSvgAspectRatio(), maX(), maY(), maWidth(), maHeight(), maVersion() { if(!getParent()) { // initial fill is black maSvgStyleAttributes.setFill(SvgPaint(basegfx::BColor(0.0, 0.0, 0.0), true, true)); } } SvgSvgNode::~SvgSvgNode() { if(mpViewBox) delete mpViewBox; } const SvgStyleAttributes* SvgSvgNode::getSvgStyleAttributes() const { return &maSvgStyleAttributes; } void SvgSvgNode::parseAttribute(const rtl::OUString& rTokenName, SVGToken aSVGToken, const rtl::OUString& aContent) { // call parent SvgNode::parseAttribute(rTokenName, aSVGToken, aContent); // read style attributes maSvgStyleAttributes.parseStyleAttribute(rTokenName, aSVGToken, aContent); // parse own switch(aSVGToken) { case SVGTokenStyle: { maSvgStyleAttributes.readStyle(aContent); break; } case SVGTokenViewBox: { const basegfx::B2DRange aRange(readViewBox(aContent, *this)); if(!aRange.isEmpty()) { setViewBox(&aRange); } break; } case SVGTokenPreserveAspectRatio: { setSvgAspectRatio(readSvgAspectRatio(aContent)); break; } case SVGTokenX: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { setX(aNum); } break; } case SVGTokenY: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { setY(aNum); } break; } case SVGTokenWidth: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { if(aNum.isPositive()) { setWidth(aNum); } } break; } case SVGTokenHeight: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { if(aNum.isPositive()) { setHeight(aNum); } } break; } case SVGTokenVersion: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { setVersion(aNum); } break; } default: { break; } } } void SvgSvgNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool bReferenced) const { drawinglayer::primitive2d::Primitive2DSequence aSequence; // decompose childs SvgNode::decomposeSvgNode(aSequence, bReferenced); if(aSequence.hasElements()) { if(getParent()) { if(getViewBox()) { // Svg defines that with no width or no height the viewBox content is empty, // so both need to exist if(!basegfx::fTools::equalZero(getViewBox()->getWidth()) && !basegfx::fTools::equalZero(getViewBox()->getHeight())) { // create target range homing x,y, width and height as given const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0); const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0); const double fW(getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : getViewBox()->getWidth()); const double fH(getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : getViewBox()->getHeight()); const basegfx::B2DRange aTarget(fX, fY, fX + fW, fY + fH); if(aTarget.equal(*getViewBox())) { // no mapping needed, append drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aSequence); } else { // create mapping const SvgAspectRatio& rRatio = getSvgAspectRatio(); if(rRatio.isSet()) { // 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, aSequence)); if(rRatio.isMeetOrSlice()) { // embed in transformation drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xRef); } else { // need to embed in MaskPrimitive2D, too const drawinglayer::primitive2d::Primitive2DReference xMask( new drawinglayer::primitive2d::MaskPrimitive2D( basegfx::B2DPolyPolygon(basegfx::tools::createPolygonFromRect(aTarget)), drawinglayer::primitive2d::Primitive2DSequence(&xRef, 1))); drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xMask); } } else { // choose default mapping const basegfx::B2DHomMatrix aEmbeddingTransform( rRatio.createLinearMapping( aTarget, *getViewBox())); // embed in transformation const drawinglayer::primitive2d::Primitive2DReference xTransform( new drawinglayer::primitive2d::TransformPrimitive2D( aEmbeddingTransform, aSequence)); drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xTransform); } } } } else { // check if we have a size const double fW(getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : 0.0); const double fH(getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : 0.0); // 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)) { // check if we have a x,y position const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0); const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0); if(!basegfx::fTools::equalZero(fX) || !basegfx::fTools::equalZero(fY)) { // embed in transform const drawinglayer::primitive2d::Primitive2DReference xRef( new drawinglayer::primitive2d::TransformPrimitive2D( basegfx::tools::createTranslateB2DHomMatrix(fX, fY), aSequence)); aSequence = drawinglayer::primitive2d::Primitive2DSequence(&xRef, 1); } // embed in MaskPrimitive2D to clip const drawinglayer::primitive2d::Primitive2DReference xMask( new drawinglayer::primitive2d::MaskPrimitive2D( basegfx::B2DPolyPolygon( basegfx::tools::createPolygonFromRect( basegfx::B2DRange(fX, fY, fX + fW, fY + fH))), aSequence)); // append drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xMask); } } } else { // Outermost SVG element; create target range homing width and height as given. // SVG defines that x,y has no meanig for the outermost SVG element. Use a fallback // width and height of din A 4 (21 x 29,7 cm) double fW(getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : (210.0 * 3.543307)); double fH(getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : (297.0 * 3.543307)); // 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)) { const basegfx::B2DRange aSvgCanvasRange(0.0, 0.0, fW, fH); if(getViewBox()) { if(!basegfx::fTools::equalZero(getViewBox()->getWidth()) && !basegfx::fTools::equalZero(getViewBox()->getHeight())) { // create mapping const SvgAspectRatio& rRatio = getSvgAspectRatio(); basegfx::B2DHomMatrix aViewBoxMapping; if(rRatio.isSet()) { // let mapping be created from SvgAspectRatio aViewBoxMapping = rRatio.createMapping(aSvgCanvasRange, *getViewBox()); // no need to check ratio here for slice, the outermost Svg will // be clipped anyways (see below) } else { // choose default mapping aViewBoxMapping = rRatio.createLinearMapping(aSvgCanvasRange, *getViewBox()); } // scale content to viewBox definitions const drawinglayer::primitive2d::Primitive2DReference xTransform( new drawinglayer::primitive2d::TransformPrimitive2D( aViewBoxMapping, aSequence)); aSequence = drawinglayer::primitive2d::Primitive2DSequence(&xTransform, 1); } } // 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. bool bDoCorrectCanvasClipping(true); if(bDoCorrectCanvasClipping) { // 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( drawinglayer::primitive2d::getB2DRangeFromPrimitive2DSequence( aSequence, 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 it's // real life size const drawinglayer::primitive2d::Primitive2DReference xLine( new drawinglayer::primitive2d::PolygonHairlinePrimitive2D( basegfx::tools::createPolygonFromRect( aSvgCanvasRange), basegfx::BColor(0.0, 0.0, 0.0))); const drawinglayer::primitive2d::Primitive2DReference xHidden( new drawinglayer::primitive2d::HiddenGeometryPrimitive2D( drawinglayer::primitive2d::Primitive2DSequence(&xLine, 1))); drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(aSequence, 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 unneccessary // 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::tools::createPolygonFromRect( aSvgCanvasRange)), aSequence)); aSequence = drawinglayer::primitive2d::Primitive2DSequence(&xMask, 1); } else { // not inside, no overlap. Empty Svg aSequence.realloc(0); } } if(aSequence.hasElements()) { // embed in transform primitive to scale to 1/100th mm // where 1 mm == 3.543307 px to get from Svg coordinates to // drawinglayer ones const double fScaleTo100thmm(100.0 / 3.543307); const basegfx::B2DHomMatrix aTransform( basegfx::tools::createScaleB2DHomMatrix( fScaleTo100thmm, fScaleTo100thmm)); const drawinglayer::primitive2d::Primitive2DReference xTransform( new drawinglayer::primitive2d::TransformPrimitive2D( aTransform, aSequence)); aSequence = drawinglayer::primitive2d::Primitive2DSequence(&xTransform, 1); // append to result drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aSequence); } } } } } const basegfx::B2DRange* SvgSvgNode::getCurrentViewPort() const { if(getViewBox()) { return getViewBox(); } else { return SvgNode::getCurrentViewPort(); } } } // end of namespace svgreader } // end of namespace svgio ////////////////////////////////////////////////////////////////////////////// // eof