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 const sal_Int32 nDefaultProgressBarRange = 1000000;
  27 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         return;
  52
  53     if (nReference)
  54     {
  55         double fPercent(static_cast<double>(nNewReference) / nReference);
  56         double fValue(nValue * fPercent);
  57         nValue = static_cast<sal_Int32>(fValue);
  58         nReference = nNewReference;
  59     }
  60     else
  61     {
  62         nReference = nNewReference;
  63         nValue = 0;
  64     }
  65 }
  66
  67 void ProgressBarHelper::SetValue(sal_Int32 nTempValue)
  68 {
  69     if (!xStatusIndicator.is() || (nReference <= 0))
  70         return;
  71
  72     if ((nTempValue >= nValue) && (!bStrict || (nTempValue <= nReference)))
  73     {
  74         // #91317# no progress bar with values > 100%
  75         if (nTempValue > nReference)
  76         {
  77             if (!bRepeat)
  78                 nValue = nReference;
  79             else
  80             {
  81                 xStatusIndicator->reset();
  82                 nValue = 0;
  83             }
  84         }
  85         else
  86             nValue = nTempValue;
  87
  88         double fValue(nValue);
  89         double fNewValue ((fValue * nRange) / nReference);
  90
  91         double fPercent((fNewValue * 100) / nRange);
  92         if (fPercent >= (fOldPercent + fProgressStep) || fPercent < fOldPercent)
  93         {
  94             xStatusIndicator->setValue(static_cast<sal_Int32>(fNewValue));
  95             fOldPercent = fPercent;
  96         }
  97     }
  98 #ifdef DBG_UTIL
  99     else if (!bFailure)
 100     {
 101         OSL_FAIL("tried to set a wrong value on the progressbar");
 102         bFailure = true;
 103     }
 104 #endif
 105 }
 106
 107 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */