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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
commit940b4d1848e8c70ab7642901a68594e8016caffc (patch)
treeeb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /svgio/source/svgreader/svgstylenode.cxx
parentInitial commit. (diff)
downloadlibreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz
libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'svgio/source/svgreader/svgstylenode.cxx')
-rw-r--r--svgio/source/svgreader/svgstylenode.cxx229
1 files changed, 229 insertions, 0 deletions
diff --git a/svgio/source/svgreader/svgstylenode.cxx b/svgio/source/svgreader/svgstylenode.cxx
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+/* -*- 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 <svgstylenode.hxx>
+#include <svgdocument.hxx>
+
+namespace svgio::svgreader
+{
+ SvgStyleNode::SvgStyleNode(
+ SvgDocument& rDocument,
+ SvgNode* pParent)
+ : SvgNode(SVGTokenStyle, rDocument, pParent),
+ maSvgStyleAttributes(),
+ mbTextCss(false)
+ {
+ }
+
+ SvgStyleNode::~SvgStyleNode()
+ {
+ while(!maSvgStyleAttributes.empty())
+ {
+ delete *(maSvgStyleAttributes.end() - 1);
+ maSvgStyleAttributes.pop_back();
+ }
+ }
+
+ // #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 SVGTokenType:
+ {
+ 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(size_t a(0); a < aSelectorParts.size(); a++)
+ {
+ aConcatenatedSelector.append(aSelectorParts[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;
+
+ // create new style and add to local list (for ownership control)
+ SvgStyleAttributes* pNewStyle = new SvgStyleAttributes(*this);
+ maSvgStyleAttributes.push_back(pNewStyle);
+
+ // fill with content
+ pNewStyle->readCssStyle(aContent);
+
+ // 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());
+
+ if(aSingleName.getLength())
+ {
+ addCssStyleSheet(aSingleName, *pNewStyle);
+ }
+
+ 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: */