/* -*- 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 namespace svgio::svgreader { SvgStyleNode::SvgStyleNode( SvgDocument& rDocument, SvgNode* pParent) : SvgNode(SVGToken::Style, rDocument, pParent), mbTextCss(false) { } // #i125258# no parent when we are a CssStyle holder to break potential loops because // when using CssStyles we jump uncontrolled inside the node tree hierarchy bool SvgStyleNode::supportsParentStyle() const { if(isTextCss()) { return false; } // call parent return SvgNode::supportsParentStyle(); } void SvgStyleNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent) { // call parent SvgNode::parseAttribute(rTokenName, aSVGToken, aContent); // parse own switch(aSVGToken) { case SVGToken::Type: { if(!aContent.isEmpty()) { if(aContent.startsWith("text/css")) { setTextCss(true); } } break; } default: { break; } } } void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const SvgStyleAttributes& rNewStyle) { // aSelectors: CssStyle selectors, any combination, no comma separations, no spaces at start/end // rNewStyle: the already prepared style to register on that name if(aSelectors.isEmpty()) return; std::vector< OUString > aSelectorParts; const sal_Int32 nLen(aSelectors.getLength()); sal_Int32 nPos(0); OUStringBuffer aToken; // split into single tokens (currently only space separator) while(nPos < nLen) { const sal_Int32 nInitPos(nPos); copyToLimiter(aSelectors, u' ', nPos, aToken, nLen); skip_char(aSelectors, u' ', nPos, nLen); const OUString aSelectorPart(aToken.makeStringAndClear().trim()); if(!aSelectorPart.isEmpty()) { aSelectorParts.push_back(aSelectorPart); } if(nInitPos == nPos) { OSL_ENSURE(false, "Could not interpret on current position (!)"); nPos++; } } if(aSelectorParts.empty()) return; OUStringBuffer aConcatenatedSelector; // re-combine without spaces, create a unique name (for now) for(const auto &a : aSelectorParts) { aConcatenatedSelector.append(a); } // CssStyles in SVG are currently not completely supported; the current idea for // supporting the needed minimal set is to register CssStyles associated to a string // which is just the space-char cleaned, concatenated Selectors. The part to 'match' // these is in fillCssStyleVectorUsingHierarchyAndSelectors. There, the same string is // built up using the priorities of local CssStyle, Id, Class and other info combined // with the existing hierarchy. This creates a specificity and priority-sorted local // list for each node which is then chained using get/setCssStyleParent. // The current solution is capable of solving space-separated selectors which can be // mixed between Id, Class and type specifiers. // When CssStyles need more specific solving, the start point is here; remember the // needed infos not in maIdStyleTokenMapperList at the document, but select evtl. // more specific infos there in a class capable of handling more complex matchings. // Additionally fillCssStyleVector (or the mechanism above that when a linked list of // SvgStyleAttributes will not do it) will have to be adapted to make use of it. // register new style at document for (evtl. concatenated) stylename const_cast< SvgDocument& >(getDocument()).addSvgStyleAttributesToMapper(aConcatenatedSelector.makeStringAndClear(), rNewStyle); } void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const OUString& aContent) { // aSelectors: possible comma-separated list of CssStyle definitions, no spaces at start/end // aContent: the svg style definitions as string if(aSelectors.isEmpty() || aContent.isEmpty()) return; // comma-separated split (Css abbreviation for same style for multiple selectors) const sal_Int32 nLen(aSelectors.getLength()); sal_Int32 nPos(0); OUStringBuffer aToken; while(nPos < nLen) { const sal_Int32 nInitPos(nPos); copyToLimiter(aSelectors, u',', nPos, aToken, nLen); skip_char(aSelectors, u' ', u',', nPos, nLen); const OUString aSingleName(aToken.makeStringAndClear().trim()); // add the current css class only if wasn't previously added auto [aIterator, bIsNew] = maSvgStyleAttributes.try_emplace(aSingleName); if (bIsNew) { // create new style and add to local list (for ownership control) and // in case it's written to again in future classes to prevent overwrites aIterator->second = std::make_unique(*this); } const std::unique_ptr& pCurrentStyle = aIterator->second; // fill with content pCurrentStyle->readCssStyle(aContent); if(aSingleName.getLength()) { addCssStyleSheet(aSingleName, *pCurrentStyle); } if(nInitPos == nPos) { OSL_ENSURE(false, "Could not interpret on current position (!)"); nPos++; } } } void SvgStyleNode::addCssStyleSheet(const OUString& aSelectorsAndContent) { const sal_Int32 nLen(aSelectorsAndContent.getLength()); if(!nLen) return; sal_Int32 nPos(0); OUStringBuffer aToken; while(nPos < nLen) { // read the full selectors (may be multiple, comma-separated) const sal_Int32 nInitPos(nPos); skip_char(aSelectorsAndContent, u' ', nPos, nLen); copyToLimiter(aSelectorsAndContent, u'{', nPos, aToken, nLen); skip_char(aSelectorsAndContent, u' ', u'{', nPos, nLen); const OUString aSelectors(aToken.makeStringAndClear().trim()); OUString aContent; if(!aSelectors.isEmpty() && nPos < nLen) { // isolate content as text, embraced by '{' and '}' copyToLimiter(aSelectorsAndContent, u'}', nPos, aToken, nLen); skip_char(aSelectorsAndContent, u' ', u'}', nPos, nLen); aContent = aToken.makeStringAndClear().trim(); } if(!aSelectors.isEmpty() && !aContent.isEmpty()) { addCssStyleSheet(aSelectors, aContent); } if(nInitPos == nPos) { OSL_ENSURE(false, "Could not interpret on current position (!)"); nPos++; } } } } // end of namespace svgio::svgreader /* vim:set shiftwidth=4 softtabstop=4 expandtab: */