libreoffice/xmloff/source/core/ProgressBarHelper.cxx

/*************************************************************************
 *
 *  $RCSfile: ProgressBarHelper.cxx,v $
 *
 *  $Revision: 1.11 $
 *
 *  last change: $Author: sab $ $Date: 2001-09-25 10:29:18 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
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 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#ifdef PCH
#include "filt_pch.hxx"
#endif

#pragma hdrstop


//___________________________________________________________________

#ifndef _XMLOFF_PROGRESSBARHELPER_HXX
#include "ProgressBarHelper.hxx"
#endif

#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif

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

const sal_Int32 nDefaultProgressBarRange = 1000000;
const float fProgressStep = 0.5;

ProgressBarHelper::ProgressBarHelper(const ::com::sun::star::uno::Reference < ::com::sun::star::task::XStatusIndicator>& xTempStatusIndicator,
                                    const sal_Bool bTempStrict)
    : fOldPercent(0.0),
    nRange(nDefaultProgressBarRange),
    xStatusIndicator(xTempStatusIndicator),
    nReference(0),
    nValue(0),
    bStrict(bTempStrict)
{
}

ProgressBarHelper::~ProgressBarHelper()
{
}

sal_Int32 ProgressBarHelper::ChangeReference(sal_Int32 nNewReference)
{
    if((nNewReference > 0) && (nNewReference != nReference))
    {
        if (nReference)
        {
            double fPercent(nNewReference / nReference);
            double fValue(nValue * fPercent);
            nValue = sal_Int32(nValue);
            nReference = nNewReference;
        }
        else
        {
            nReference = nNewReference;
            nValue = 0;
        }
    }
    return nValue;
}

void ProgressBarHelper::SetValue(sal_Int32 nTempValue)
{
    if ((nTempValue >= nValue) && (!bStrict || (bStrict && (nTempValue <= nReference))))
    {
        // #91317# no progress bar with values > 100%
        nValue = (nTempValue > nReference) ? nReference : nTempValue;
        if (xStatusIndicator.is() && (nReference > 0))
        {
            double fValue(nValue);
            double fNewValue ((fValue * nRange) / nReference);
            double fPercent ((fNewValue * 100) / nRange);
            if (fPercent >= (fOldPercent + fProgressStep))
            {
                xStatusIndicator->setValue((sal_Int32)fNewValue);
                fOldPercent = fPercent;
            }
        }
    }
    else
        DBG_ERROR("tried to set a wrong value on the progressbar");
}