text: // Copyright (c) 2009-2016, NVIDIA CORPORATION. All rights reserved.
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions
  // are met:
  //  * Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  //  * Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in the
  //    documentation and/or other materials provided with the distribution.
  //  * Neither the name of NVIDIA CORPORATION nor the names of its
  //    contributors may be used to endorse or promote products derived
  //    from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  // PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  
  #pragma once
  
  #include <QDockWidget>
  #include <QString>
  #include <QTextBrowser>
  
  class LogWidget : public QDockWidget
  {
    Q_OBJECT
  
    public:
      LogWidget(QWidget *parent = 0);
      virtual ~LogWidget();
  
      enum class Severity
      {
        LOG_MESSAGE,   // pass the message straight through (could contain html markup)
        LOG_WARNING,   // color text to indicate a 'warning'
        LOG_ERROR      // color text to indicate an 'error'
      };
  
      virtual void message( const QString & message, Severity severity = Severity::LOG_MESSAGE );
  
      QString latestMessage() const;
  
    protected:
      QTextBrowser * m_textEdit;
  
      QString        m_warningColor;
      QString        m_errorColor;
      QString        m_latestMessage;
  };
  
  