xbmc/pvr/guilib/PVRGUIProgressHandler.cpp

   1 /*
   2  *  Copyright (C) 2017-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "PVRGUIProgressHandler.h"
  10
  11 #include "ServiceBroker.h"
  12 #include "dialogs/GUIDialogExtendedProgressBar.h"
  13 #include "guilib/GUIComponent.h"
  14 #include "guilib/GUIWindowManager.h"
  15 #include "guilib/WindowIDs.h"
  16
  17 #include <algorithm>
  18 #include <cmath>
  19 #include <mutex>
  20 #include <string>
  21
  22 using namespace std::chrono_literals;
  23
  24 namespace PVR
  25 {
  26
  27 CPVRGUIProgressHandler::CPVRGUIProgressHandler(const std::string& strTitle)
  28   : CThread("PVRGUIProgressHandler"), m_strTitle(strTitle)
  29 {
  30 }
  31
  32 void CPVRGUIProgressHandler::UpdateProgress(const std::string& strText, float fProgress)
  33 {
  34   std::unique_lock<CCriticalSection> lock(m_critSection);
  35   m_bChanged = true;
  36   m_strText = strText;
  37   m_fProgress = fProgress;
  38
  39   if (!m_bCreated)
  40   {
  41     m_bCreated = true;
  42     Create();
  43   }
  44 }
  45
  46 void CPVRGUIProgressHandler::UpdateProgress(const std::string& strText, int iCurrent, int iMax)
  47 {
  48   float fPercentage = (iCurrent * 100.0f) / iMax;
  49   if (!std::isnan(fPercentage))
  50     fPercentage = std::min(100.0f, fPercentage);
  51
  52   UpdateProgress(strText, fPercentage);
  53 }
  54
  55 void CPVRGUIProgressHandler::Process()
  56 {
  57   CGUIDialogExtendedProgressBar* progressBar =
  58       CServiceBroker::GetGUI()->GetWindowManager().GetWindow<CGUIDialogExtendedProgressBar>(
  59           WINDOW_DIALOG_EXT_PROGRESS);
  60   if (m_bStop || !progressBar)
  61     return;
  62
  63   CGUIDialogProgressBarHandle* progressHandle = progressBar->GetHandle(m_strTitle);
  64   if (!progressHandle)
  65     return;
  66
  67   while (!m_bStop)
  68   {
  69     float fProgress = 0.0;
  70     std::string strText;
  71     bool bUpdate = false;
  72
  73     {
  74       std::unique_lock<CCriticalSection> lock(m_critSection);
  75       if (m_bChanged)
  76       {
  77         m_bChanged = false;
  78         fProgress = m_fProgress;
  79         strText = m_strText;
  80         bUpdate = true;
  81       }
  82     }
  83
  84     if (bUpdate)
  85     {
  86       progressHandle->SetPercentage(fProgress);
  87       progressHandle->SetText(strText);
  88     }
  89
  90     // Intentionally ignore some changes that come in too fast. Humans cannot read as fast as Mr. Data ;-)
  91     CThread::Sleep(100ms);
  92   }
  93
  94   progressHandle->MarkFinished();
  95 }
  96
  97 } // namespace PVR