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 <utility>
  21 #include <xmloff/ProgressBarHelper.hxx>
  22
  23 #include <osl/diagnose.h>
  24
  25 using namespace ::com::sun::star;
  26
  27 const sal_Int32 nDefaultProgressBarRange = 1000000;
  28 const float fProgressStep = 0.5;
  29
  30 ProgressBarHelper::ProgressBarHelper(css::uno::Reference < css::task::XStatusIndicator> xTempStatusIndicator,
  31                                     const bool bTempStrict)
  32 : xStatusIndicator(std::move(xTempStatusIndicator))
  33 , nRange(nDefaultProgressBarRange)
  34 , nReference(100)
  35 , nValue(0)
  36 , fOldPercent(0.0)
  37 , bStrict(bTempStrict)
  38 , bRepeat(true)
  39 #ifdef DBG_UTIL
  40 , bFailure(false)
  41 #endif
  42 {
  43 }
  44
  45 ProgressBarHelper::~ProgressBarHelper()
  46 {
  47 }
  48
  49 void ProgressBarHelper::ChangeReference(sal_Int32 nNewReference)
  50 {
  51     if((nNewReference <= 0) || (nNewReference == nReference))
  52         return;
  53
  54     if (nReference)
  55     {
  56         double fPercent(static_cast<double>(nNewReference) / nReference);
  57         double fValue(nValue * fPercent);
  58         nValue = static_cast<sal_Int32>(fValue);
  59         nReference = nNewReference;
  60     }
  61     else
  62     {
  63         nReference = nNewReference;
  64         nValue = 0;
  65     }
  66 }
  67
  68 void ProgressBarHelper::SetValue(sal_Int32 nTempValue)
  69 {
  70     if (!xStatusIndicator.is() || (nReference <= 0))
  71         return;
  72
  73     if ((nTempValue >= nValue) && (!bStrict || (nTempValue <= nReference)))
  74     {
  75         // #91317# no progress bar with values > 100%
  76         if (nTempValue > nReference)
  77         {
  78             if (!bRepeat)
  79                 nValue = nReference;
  80             else
  81             {
  82                 xStatusIndicator->reset();
  83                 nValue = 0;
  84             }
  85         }
  86         else
  87             nValue = nTempValue;
  88
  89         double fValue(nValue);
  90         double fNewValue ((fValue * nRange) / nReference);
  91
  92         double fPercent((fNewValue * 100) / nRange);
  93         if (fPercent >= (fOldPercent + fProgressStep) || fPercent < fOldPercent)
  94         {
  95             xStatusIndicator->setValue(static_cast<sal_Int32>(fNewValue));
  96             fOldPercent = fPercent;
  97         }
  98     }
  99 #ifdef DBG_UTIL
 100     else if (!bFailure)
 101     {
 102         OSL_FAIL("tried to set a wrong value on the progressbar");
 103         bFailure = true;
 104     }
 105 #endif
 106 }
 107
 108 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */