fb1469ea68
* Use range based for loops where it was possible in svgio + Goal: Better readability of the code Change-Id: I6259e2391006287d5d330277dd8d700012c32932 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/123712 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
229 lines
8.7 KiB
C++
229 lines
8.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <svgstylenode.hxx>
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#include <svgdocument.hxx>
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#include <osl/diagnose.h>
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namespace svgio::svgreader
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{
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SvgStyleNode::SvgStyleNode(
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SvgDocument& rDocument,
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SvgNode* pParent)
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: SvgNode(SVGToken::Style, rDocument, pParent),
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mbTextCss(false)
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{
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}
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SvgStyleNode::~SvgStyleNode()
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{
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while(!maSvgStyleAttributes.empty())
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{
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delete *(maSvgStyleAttributes.end() - 1);
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maSvgStyleAttributes.pop_back();
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}
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}
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// #i125258# no parent when we are a CssStyle holder to break potential loops because
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// when using CssStyles we jump uncontrolled inside the node tree hierarchy
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bool SvgStyleNode::supportsParentStyle() const
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{
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if(isTextCss())
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{
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return false;
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}
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// call parent
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return SvgNode::supportsParentStyle();
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}
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void SvgStyleNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
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{
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// call parent
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SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
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// parse own
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switch(aSVGToken)
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{
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case SVGToken::Type:
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{
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if(!aContent.isEmpty())
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{
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if(aContent.startsWith("text/css"))
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{
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setTextCss(true);
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}
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}
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break;
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}
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default:
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{
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break;
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}
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}
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}
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void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const SvgStyleAttributes& rNewStyle)
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{
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// aSelectors: CssStyle selectors, any combination, no comma separations, no spaces at start/end
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// rNewStyle: the already prepared style to register on that name
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if(aSelectors.isEmpty())
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return;
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std::vector< OUString > aSelectorParts;
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const sal_Int32 nLen(aSelectors.getLength());
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sal_Int32 nPos(0);
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OUStringBuffer aToken;
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// split into single tokens (currently only space separator)
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while(nPos < nLen)
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{
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const sal_Int32 nInitPos(nPos);
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copyToLimiter(aSelectors, u' ', nPos, aToken, nLen);
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skip_char(aSelectors, u' ', nPos, nLen);
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const OUString aSelectorPart(aToken.makeStringAndClear().trim());
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if(!aSelectorPart.isEmpty())
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{
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aSelectorParts.push_back(aSelectorPart);
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}
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if(nInitPos == nPos)
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{
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OSL_ENSURE(false, "Could not interpret on current position (!)");
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nPos++;
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}
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}
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if(aSelectorParts.empty())
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return;
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OUStringBuffer aConcatenatedSelector;
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// re-combine without spaces, create a unique name (for now)
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for(const auto &a : aSelectorParts)
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{
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aConcatenatedSelector.append(a);
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}
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// CssStyles in SVG are currently not completely supported; the current idea for
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// supporting the needed minimal set is to register CssStyles associated to a string
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// which is just the space-char cleaned, concatenated Selectors. The part to 'match'
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// these is in fillCssStyleVectorUsingHierarchyAndSelectors. There, the same string is
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// built up using the priorities of local CssStyle, Id, Class and other info combined
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// with the existing hierarchy. This creates a specificity and priority-sorted local
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// list for each node which is then chained using get/setCssStyleParent.
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// The current solution is capable of solving space-separated selectors which can be
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// mixed between Id, Class and type specifiers.
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// When CssStyles need more specific solving, the start point is here; remember the
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// needed infos not in maIdStyleTokenMapperList at the document, but select evtl.
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// more specific infos there in a class capable of handling more complex matchings.
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// Additionally fillCssStyleVector (or the mechanism above that when a linked list of
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// SvgStyleAttributes will not do it) will have to be adapted to make use of it.
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// register new style at document for (evtl. concatenated) stylename
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const_cast< SvgDocument& >(getDocument()).addSvgStyleAttributesToMapper(aConcatenatedSelector.makeStringAndClear(), rNewStyle);
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}
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void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const OUString& aContent)
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{
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// aSelectors: possible comma-separated list of CssStyle definitions, no spaces at start/end
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// aContent: the svg style definitions as string
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if(aSelectors.isEmpty() || aContent.isEmpty())
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return;
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// create new style and add to local list (for ownership control)
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SvgStyleAttributes* pNewStyle = new SvgStyleAttributes(*this);
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maSvgStyleAttributes.push_back(pNewStyle);
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// fill with content
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pNewStyle->readCssStyle(aContent);
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// comma-separated split (Css abbreviation for same style for multiple selectors)
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const sal_Int32 nLen(aSelectors.getLength());
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sal_Int32 nPos(0);
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OUStringBuffer aToken;
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while(nPos < nLen)
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{
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const sal_Int32 nInitPos(nPos);
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copyToLimiter(aSelectors, u',', nPos, aToken, nLen);
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skip_char(aSelectors, u' ', u',', nPos, nLen);
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const OUString aSingleName(aToken.makeStringAndClear().trim());
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if(aSingleName.getLength())
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{
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addCssStyleSheet(aSingleName, *pNewStyle);
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}
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if(nInitPos == nPos)
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{
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OSL_ENSURE(false, "Could not interpret on current position (!)");
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nPos++;
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}
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}
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}
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void SvgStyleNode::addCssStyleSheet(const OUString& aSelectorsAndContent)
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{
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const sal_Int32 nLen(aSelectorsAndContent.getLength());
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if(!nLen)
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return;
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sal_Int32 nPos(0);
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OUStringBuffer aToken;
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while(nPos < nLen)
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{
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// read the full selectors (may be multiple, comma-separated)
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const sal_Int32 nInitPos(nPos);
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skip_char(aSelectorsAndContent, u' ', nPos, nLen);
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copyToLimiter(aSelectorsAndContent, u'{', nPos, aToken, nLen);
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skip_char(aSelectorsAndContent, u' ', u'{', nPos, nLen);
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const OUString aSelectors(aToken.makeStringAndClear().trim());
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OUString aContent;
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if(!aSelectors.isEmpty() && nPos < nLen)
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{
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// isolate content as text, embraced by '{' and '}'
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copyToLimiter(aSelectorsAndContent, u'}', nPos, aToken, nLen);
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skip_char(aSelectorsAndContent, u' ', u'}', nPos, nLen);
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aContent = aToken.makeStringAndClear().trim();
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}
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if(!aSelectors.isEmpty() && !aContent.isEmpty())
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{
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addCssStyleSheet(aSelectors, aContent);
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}
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if(nInitPos == nPos)
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{
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OSL_ENSURE(false, "Could not interpret on current position (!)");
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nPos++;
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}
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}
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}
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} // end of namespace svgio::svgreader
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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