xref: /trunk/main/xmloff/source/core/xmlmultiimagehelper.cxx (revision ddde725d65c83fe3ba1186d46f6e3e08f12ba47e)

/**************************************************************
 *
 * 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_xmloff.hxx"

#include <xmloff/xmlmultiimagehelper.hxx>
#include <rtl/ustring.hxx>

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

using namespace ::com::sun::star;

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

namespace
{
    sal_uInt32 getQualityIndex(const rtl::OUString& rString)
    {
        sal_uInt32 nRetval(0);

        // pixel formats first
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".bmp")))
        {
            return 10;
        }
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".gif")))
        {
            return 20;
        }
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".jpg")))
        {
            return 30;
        }
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".png")))
        {
            return 40;
        }

        // vector formats, prefer always
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".svm")))
        {
            return 1000;
        }
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".wmf")))
        {
            return 1010;
        }
        if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".emf")))
        {
            return 1020;
        }
        else if(rString.endsWithAsciiL(RTL_CONSTASCII_STRINGPARAM(".svg")))
        {
            return 1030;
        }

        return nRetval;
    }
}

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

multiImageImportHelper::multiImageImportHelper()
:   maImplContextVector(),
    mbSupportsMultipleContents(false)
{
}

multiImageImportHelper::~multiImageImportHelper()
{
    while(!maImplContextVector.empty())
    {
        delete *(maImplContextVector.end() - 1);
        maImplContextVector.pop_back();
    }
}

void multiImageImportHelper::solveMultipleImages()
{
    if(maImplContextVector.size() > 1)
    {
        // multiple child contexts were imported, decide which is the most valuable one
        // and remove the rest
        sal_uInt32 nIndexOfPreferred(maImplContextVector.size());
        sal_uInt32 nBestQuality(0), a(0);

        for(a = 0; a < maImplContextVector.size(); a++)
        {
            const rtl::OUString aStreamURL(getGraphicURLFromImportContext(**maImplContextVector[a]));
            const sal_uInt32 nNewQuality(getQualityIndex(aStreamURL));

            if(nNewQuality > nBestQuality)
            {
                nBestQuality = nNewQuality;
                nIndexOfPreferred = a;
            }
        }

        // correct if needed, default is to use the last entry
        if(nIndexOfPreferred >= maImplContextVector.size())
        {
            nIndexOfPreferred = maImplContextVector.size() - 1;
        }

        // Take out the most valuable one
        const std::vector< SvXMLImportContextRef* >::iterator aRemove(maImplContextVector.begin() + nIndexOfPreferred);
        delete *aRemove;
        maImplContextVector.erase(aRemove);

        // remove the rest from parent
        for(a = 0; a < maImplContextVector.size(); a++)
        {
            removeGraphicFromImportContext(**maImplContextVector[a]);
        }
    }
}

void multiImageImportHelper::addContent(const SvXMLImportContext& rSvXMLImportContext)
{
    if(dynamic_cast< const SvXMLImportContext* >(&rSvXMLImportContext))
    {
        maImplContextVector.push_back(new SvXMLImportContextRef(const_cast< SvXMLImportContext* >(&rSvXMLImportContext)));
    }
}

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