xmloff/source/core/ProgressBarHelper.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <xmloff/ProgressBarHelper.hxx>
  21
  22 #include <osl/diagnose.h>
  23
  24 using namespace ::com::sun::star;
  25
  26 static const sal_Int32 nDefaultProgressBarRange = 1000000;
  27 static const float fProgressStep = 0.5;
  28
  29 ProgressBarHelper::ProgressBarHelper(const css::uno::Reference < css::task::XStatusIndicator>& xTempStatusIndicator,
  30                                     const bool bTempStrict)
  31 : xStatusIndicator(xTempStatusIndicator)
  32 , nRange(nDefaultProgressBarRange)
  33 , nReference(100)
  34 , nValue(0)
  35 , fOldPercent(0.0)
  36 , bStrict(bTempStrict)
  37 , bRepeat(true)
  38 #ifdef DBG_UTIL
  39 , bFailure(false)
  40 #endif
  41 {
  42 }
  43
  44 ProgressBarHelper::~ProgressBarHelper()
  45 {
  46 }
  47
  48 void ProgressBarHelper::ChangeReference(sal_Int32 nNewReference)
  49 {
  50     if((nNewReference > 0) && (nNewReference != nReference))
  51     {
  52         if (nReference)
  53         {
  54             double fPercent(static_cast<double>(nNewReference) / nReference);
  55             double fValue(nValue * fPercent);
  56             nValue = static_cast<sal_Int32>(fValue);
  57             nReference = nNewReference;
  58         }
  59         else
  60         {
  61             nReference = nNewReference;
  62             nValue = 0;
  63         }
  64     }
  65 }
  66
  67 void ProgressBarHelper::SetValue(sal_Int32 nTempValue)
  68 {
  69     if (xStatusIndicator.is() && (nReference > 0))
  70     {
  71         if ((nTempValue >= nValue) && (!bStrict || (nTempValue <= nReference)))
  72         {
  73             // #91317# no progress bar with values > 100%
  74             if (nTempValue > nReference)
  75             {
  76                 if (!bRepeat)
  77                     nValue = nReference;
  78                 else
  79                 {
  80                     xStatusIndicator->reset();
  81                     nValue = 0;
  82                 }
  83             }
  84             else
  85                 nValue = nTempValue;
  86
  87             double fValue(nValue);
  88             double fNewValue ((fValue * nRange) / nReference);
  89
  90             double fPercent((fNewValue * 100) / nRange);
  91             if (fPercent >= (fOldPercent + fProgressStep) || fPercent < fOldPercent)
  92             {
  93                 xStatusIndicator->setValue(static_cast<sal_Int32>(fNewValue));
  94                 fOldPercent = fPercent;
  95             }
  96         }
  97 #ifdef DBG_UTIL
  98         else if (!bFailure)
  99         {
 100             OSL_FAIL("tried to set a wrong value on the progressbar");
 101             bFailure = true;
 102         }
 103 #endif
 104     }
 105 }
 106
 107 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */