xref: /aoo42x/main/svgio/source/svgreader/svgstylenode.cxx (revision 9d01bcde)

/**************************************************************
 *
 * 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/svgstylenode.hxx>
#include <svgio/svgreader/svgdocument.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace svgio
{
    namespace 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();
            }
        }

        // #125258# 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 rtl::OUString& rTokenName, SVGToken aSVGToken, const rtl::OUString& aContent)
        {
            // call parent
            SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);

            // parse own
            switch(aSVGToken)
            {
                case SVGTokenType:
                {
                    if(aContent.getLength())
                    {
                        static rtl::OUString aStrTextCss(rtl::OUString::createFromAscii("text/css"));

                        if(aContent.match(aStrTextCss))
                        {
                            setTextCss(true);
                        }
                    }
                    break;
                }
                default:
                {
                    break;
                }
            }
        }

        void SvgStyleNode::addCssStyleSheet(const rtl::OUString& aContent)
        {
            const sal_Int32 nLen(aContent.getLength());

            if(nLen)
            {
                sal_Int32 nPos(0);
                rtl::OUStringBuffer aTokenValue;

                while(nPos < nLen)
                {
                    // read the full style node names (may be multiple) and put to aStyleName
                    const sal_Int32 nInitPos(nPos);
                    skip_char(aContent, sal_Unicode(' '), nPos, nLen);
                    copyToLimiter(aContent, sal_Unicode('{'), nPos, aTokenValue, nLen);
                    skip_char(aContent, sal_Unicode(' '), sal_Unicode('{'), nPos, nLen);

                    const rtl::OUString aStyleName(aTokenValue.makeStringAndClear().trim());
                    const sal_Int32 nLen2(aStyleName.getLength());
                    std::vector< rtl::OUString > aStyleNames;

                    if(nLen2)
                    {
                        // extract names
                        sal_Int32 nPos2(0);
                        rtl::OUStringBuffer aSingleName;

                        while(nPos2 < nLen2)
                        {
                            skip_char(aStyleName, sal_Unicode('#'), nPos2, nLen2);
                            copyToLimiter(aStyleName, sal_Unicode(' '), nPos2, aSingleName, nLen2);
                            skip_char(aStyleName, sal_Unicode(' '), nPos2, nLen2);

                            const rtl::OUString aOUSingleName(aSingleName.makeStringAndClear().trim());

                            if(aOUSingleName.getLength())
                            {
                                aStyleNames.push_back(aOUSingleName);
                            }
                        }
                    }

                    if(aStyleNames.size() && nPos < nLen)
                    {
                        copyToLimiter(aContent, sal_Unicode('}'), nPos, aTokenValue, nLen);
                        skip_char(aContent, sal_Unicode(' '), sal_Unicode('}'), nPos, nLen);
                        const rtl::OUString aStyleContent(aTokenValue.makeStringAndClear().trim());

                        if(aStyleContent.getLength())
                        {
                            // create new style
                            SvgStyleAttributes* pNewStyle = new SvgStyleAttributes(*this);
                            maSvgStyleAttributes.push_back(pNewStyle);

                            // fill with content
                            pNewStyle->readStyle(aStyleContent);

                            // concatenate combined style name
                            rtl::OUString aConcatenatedStyleName;

                            for(sal_uInt32 a(0); a < aStyleNames.size(); a++)
                            {
                                aConcatenatedStyleName += aStyleNames[a];
                            }

                            // register new style at document for (evtl. concatenated) stylename
                            const_cast< SvgDocument& >(getDocument()).addSvgStyleAttributesToMapper(aConcatenatedStyleName, *pNewStyle);
                        }
                    }

                    if(nInitPos == nPos)
                    {
                        OSL_ENSURE(false, "Could not interpret on current position (!)");
                        nPos++;
                    }
                }
            }
        }

    } // end of namespace svgreader
} // end of namespace svgio

//////////////////////////////////////////////////////////////////////////////
// eof