/* -*- 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 #include #include #include #include #include #include #include #include namespace svgio { namespace svgreader { SvgMaskNode::SvgMaskNode( SvgDocument& rDocument, SvgNode* pParent) : SvgNode(SVGTokenMask, rDocument, pParent), maSvgStyleAttributes(*this), maX(SvgNumber(-10.0, Unit_percent, true)), maY(SvgNumber(-10.0, Unit_percent, true)), maWidth(SvgNumber(120.0, Unit_percent, true)), maHeight(SvgNumber(120.0, Unit_percent, true)), maMaskUnits(objectBoundingBox), maMaskContentUnits(userSpaceOnUse) { } SvgMaskNode::~SvgMaskNode() { } const SvgStyleAttributes* SvgMaskNode::getSvgStyleAttributes() const { return &maSvgStyleAttributes; } void SvgMaskNode::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 SVGTokenStyle: { readLocalCssStyle(aContent); break; } case SVGTokenX: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { maX = aNum; } break; } case SVGTokenY: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { maY = aNum; } break; } case SVGTokenWidth: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { if(aNum.isPositive()) { maWidth = aNum; } } break; } case SVGTokenHeight: { SvgNumber aNum; if(readSingleNumber(aContent, aNum)) { if(aNum.isPositive()) { maHeight = aNum; } } break; } case SVGTokenTransform: { const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this)); if(!aMatrix.isIdentity()) { setTransform(&aMatrix); } break; } case SVGTokenMaskUnits: { if(!aContent.isEmpty()) { if(aContent.match(commonStrings::aStrUserSpaceOnUse)) { setMaskUnits(userSpaceOnUse); } else if(aContent.match(commonStrings::aStrObjectBoundingBox)) { setMaskUnits(objectBoundingBox); } } break; } case SVGTokenMaskContentUnits: { if(!aContent.isEmpty()) { if(aContent.match(commonStrings::aStrUserSpaceOnUse)) { setMaskContentUnits(userSpaceOnUse); } else if(aContent.match(commonStrings::aStrObjectBoundingBox)) { setMaskContentUnits(objectBoundingBox); } } break; } default: { break; } } } void SvgMaskNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const { drawinglayer::primitive2d::Primitive2DContainer aNewTarget; // decompose children SvgNode::decomposeSvgNode(aNewTarget, bReferenced); if(aNewTarget.empty()) return; if(getTransform()) { // create embedding group element with transformation const drawinglayer::primitive2d::Primitive2DReference xRef( new drawinglayer::primitive2d::TransformPrimitive2D( *getTransform(), aNewTarget)); aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xRef }; } // append to current target rTarget.append(aNewTarget); } void SvgMaskNode::apply( drawinglayer::primitive2d::Primitive2DContainer& rTarget, const basegfx::B2DHomMatrix* pTransform) const { if(rTarget.empty() || Display_none == getDisplay()) return; drawinglayer::primitive2d::Primitive2DContainer aMaskTarget; // get mask definition as primitives decomposeSvgNode(aMaskTarget, true); if(!aMaskTarget.empty()) { // get range of content to be masked const basegfx::B2DRange aContentRange( rTarget.getB2DRange( drawinglayer::geometry::ViewInformation2D())); const double fContentWidth(aContentRange.getWidth()); const double fContentHeight(aContentRange.getHeight()); if(fContentWidth > 0.0 && fContentHeight > 0.0) { // create OffscreenBufferRange basegfx::B2DRange aOffscreenBufferRange; if(objectBoundingBox == maMaskUnits) { // fractions or percentages of the bounding box of the element to which the mask is applied const double fX(Unit_percent == getX().getUnit() ? getX().getNumber() * 0.01 : getX().getNumber()); const double fY(Unit_percent == getY().getUnit() ? getY().getNumber() * 0.01 : getY().getNumber()); const double fW(Unit_percent == getWidth().getUnit() ? getWidth().getNumber() * 0.01 : getWidth().getNumber()); const double fH(Unit_percent == getHeight().getUnit() ? getHeight().getNumber() * 0.01 : getHeight().getNumber()); aOffscreenBufferRange = basegfx::B2DRange( aContentRange.getMinX() + (fX * fContentWidth), aContentRange.getMinY() + (fY * fContentHeight), aContentRange.getMinX() + ((fX + fW) * fContentWidth), aContentRange.getMinY() + ((fY + fH) * fContentHeight)); } else { const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0); const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0); aOffscreenBufferRange = basegfx::B2DRange( fX, fY, fX + (getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : 0.0), fY + (getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : 0.0)); } if(objectBoundingBox == maMaskContentUnits) { // mask is object-relative, embed in content transformation const drawinglayer::primitive2d::Primitive2DReference xTransform( new drawinglayer::primitive2d::TransformPrimitive2D( basegfx::utils::createScaleTranslateB2DHomMatrix( aContentRange.getRange(), aContentRange.getMinimum()), aMaskTarget)); aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xTransform }; } else // userSpaceOnUse { // #i124852# if(pTransform) { const drawinglayer::primitive2d::Primitive2DReference xTransform( new drawinglayer::primitive2d::TransformPrimitive2D( *pTransform, aMaskTarget)); aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xTransform }; } } // embed content to a ModifiedColorPrimitive2D since the definitions // how content is used as alpha is special for Svg { const drawinglayer::primitive2d::Primitive2DReference xInverseMask( new drawinglayer::primitive2d::ModifiedColorPrimitive2D( aMaskTarget, basegfx::BColorModifierSharedPtr( new basegfx::BColorModifier_luminance_to_alpha()))); aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xInverseMask }; } // prepare new content drawinglayer::primitive2d::Primitive2DReference xNewContent( new drawinglayer::primitive2d::TransparencePrimitive2D( rTarget, aMaskTarget)); // output up to now is defined by aContentRange and mask is oriented // relative to it. It is possible that aOffscreenBufferRange defines // a smaller area. In that case, embed to a mask primitive if(!aOffscreenBufferRange.isInside(aContentRange)) { xNewContent = new drawinglayer::primitive2d::MaskPrimitive2D( basegfx::B2DPolyPolygon( basegfx::utils::createPolygonFromRect( aOffscreenBufferRange)), drawinglayer::primitive2d::Primitive2DContainer { xNewContent }); } // redefine target. Use TransparencePrimitive2D with created mask // geometry rTarget = drawinglayer::primitive2d::Primitive2DContainer { xNewContent }; } else { // content is geometrically empty rTarget.clear(); } } else { // An empty clipping path will completely clip away the element that had // the clip-path property applied. (Svg spec) rTarget.clear(); } } } // end of namespace svgreader } // end of namespace svgio /* vim:set shiftwidth=4 softtabstop=4 expandtab: */