| /************************************************************** |
| * |
| * 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 <svgio/svgreader/svgclippathnode.hxx> |
| #include <drawinglayer/primitive2d/transformprimitive2d.hxx> |
| #include <drawinglayer/primitive2d/maskprimitive2d.hxx> |
| #include <basegfx/matrix/b2dhommatrixtools.hxx> |
| #include <drawinglayer/geometry/viewinformation2d.hxx> |
| #include <drawinglayer/processor2d/contourextractor2d.hxx> |
| #include <basegfx/polygon/b2dpolypolygoncutter.hxx> |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| namespace svgio |
| { |
| namespace svgreader |
| { |
| SvgClipPathNode::SvgClipPathNode( |
| SvgDocument& rDocument, |
| SvgNode* pParent) |
| : SvgNode(SVGTokenClipPathNode, rDocument, pParent), |
| maSvgStyleAttributes(*this), |
| mpaTransform(0), |
| maClipPathUnits(userSpaceOnUse) |
| { |
| } |
| |
| SvgClipPathNode::~SvgClipPathNode() |
| { |
| if(mpaTransform) delete mpaTransform; |
| } |
| |
| const SvgStyleAttributes* SvgClipPathNode::getSvgStyleAttributes() const |
| { |
| return &maSvgStyleAttributes; |
| } |
| |
| void SvgClipPathNode::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 SVGTokenTransform: |
| { |
| const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this)); |
| |
| if(!aMatrix.isIdentity()) |
| { |
| setTransform(&aMatrix); |
| } |
| break; |
| } |
| case SVGTokenClipPathUnits: |
| { |
| if(aContent.getLength()) |
| { |
| if(aContent.match(commonStrings::aStrUserSpaceOnUse, 0)) |
| { |
| setClipPathUnits(userSpaceOnUse); |
| } |
| else if(aContent.match(commonStrings::aStrObjectBoundingBox, 0)) |
| { |
| setClipPathUnits(objectBoundingBox); |
| } |
| } |
| break; |
| } |
| default: |
| { |
| break; |
| } |
| } |
| } |
| |
| void SvgClipPathNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool bReferenced) const |
| { |
| drawinglayer::primitive2d::Primitive2DSequence aNewTarget; |
| |
| // decompose childs |
| SvgNode::decomposeSvgNode(aNewTarget, bReferenced); |
| |
| if(aNewTarget.hasElements()) |
| { |
| if(getTransform()) |
| { |
| // create embedding group element with transformation |
| const drawinglayer::primitive2d::Primitive2DReference xRef( |
| new drawinglayer::primitive2d::TransformPrimitive2D( |
| *getTransform(), |
| aNewTarget)); |
| |
| drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xRef); |
| } |
| else |
| { |
| // append to current target |
| drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aNewTarget); |
| } |
| } |
| } |
| |
| void SvgClipPathNode::apply( |
| drawinglayer::primitive2d::Primitive2DSequence& rContent, |
| const basegfx::B2DHomMatrix* pTransform) const |
| { |
| if(rContent.hasElements() && Display_none != getDisplay()) |
| { |
| const drawinglayer::geometry::ViewInformation2D aViewInformation2D; |
| drawinglayer::primitive2d::Primitive2DSequence aClipTarget; |
| basegfx::B2DPolyPolygon aClipPolyPolygon; |
| |
| // get clipPath definition as primitives |
| decomposeSvgNode(aClipTarget, true); |
| |
| if(aClipTarget.hasElements()) |
| { |
| // extract filled plygons as base for a mask PolyPolygon |
| drawinglayer::processor2d::ContourExtractor2D aExtractor(aViewInformation2D, true); |
| |
| aExtractor.process(aClipTarget); |
| |
| const basegfx::B2DPolyPolygonVector& rResult(aExtractor.getExtractedContour()); |
| const sal_uInt32 nSize(rResult.size()); |
| |
| if(nSize > 1) |
| { |
| // merge to single clipPolyPolygon |
| aClipPolyPolygon = basegfx::tools::mergeToSinglePolyPolygon(rResult); |
| } |
| else |
| { |
| aClipPolyPolygon = rResult[0]; |
| } |
| } |
| |
| if(aClipPolyPolygon.count()) |
| { |
| if(objectBoundingBox == getClipPathUnits()) |
| { |
| // clip is object-relative, transform using content transformation |
| const basegfx::B2DRange aContentRange( |
| drawinglayer::primitive2d::getB2DRangeFromPrimitive2DSequence( |
| rContent, |
| aViewInformation2D)); |
| |
| aClipPolyPolygon.transform( |
| basegfx::tools::createScaleTranslateB2DHomMatrix( |
| aContentRange.getRange(), |
| aContentRange.getMinimum())); |
| } |
| else // userSpaceOnUse |
| { |
| // #i124852# |
| if(pTransform) |
| { |
| aClipPolyPolygon.transform(*pTransform); |
| } |
| } |
| |
| // redefine target. Use MaskPrimitive2D with created clip |
| // geometry. Using the automatically set mbIsClipPathContent at |
| // SvgStyleAttributes the clip definition is without fill, stroke, |
| // and strokeWidth and forced to black |
| const drawinglayer::primitive2d::Primitive2DReference xEmbedTransparence( |
| new drawinglayer::primitive2d::MaskPrimitive2D( |
| aClipPolyPolygon, |
| rContent)); |
| |
| rContent = drawinglayer::primitive2d::Primitive2DSequence(&xEmbedTransparence, 1); |
| } |
| else |
| { |
| // An empty clipping path will completely clip away the element that had |
| // the clip-path property applied. (Svg spec) |
| rContent.realloc(0); |
| } |
| } |
| } |
| |
| } // end of namespace svgreader |
| } // end of namespace svgio |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // eof |
