text: /*
   * Copyright (C) 2014 Open Source Robotics Foundation
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
  */
  #ifndef _VIDEO_STREAM_WIDGET_H_
  #define _VIDEO_STREAM_WIDGET_H_
  
  #include <gazebo/common/Plugin.hh>
  #include <gazebo/gui/GuiPlugin.hh>
  #ifndef Q_MOC_RUN  // See: https://bugreports.qt-project.org/browse/QTBUG-22829
  # include <gazebo/transport/transport.hh>
  # include <gazebo/gui/gui.hh>
  #endif
  
  namespace gazebo
  {
      class GAZEBO_VISIBLE VideoStreamWidget : public GUIPlugin
      {
        Q_OBJECT
  
        /// \brief Constructor
        /// \param[in] _parent Parent widget
        public: VideoStreamWidget();
  
        /// \brief Destructor
        public: virtual ~VideoStreamWidget();
  
        /// \brief Callback trigged when the button is pressed.
        protected slots: void OnButton();
  
        /// \brief Counter used to create unique model names
        private: unsigned int counter;
  
        /// \brief Node used to establish communication with gzserver.
        private: transport::NodePtr node;
  
        /// \brief Publisher of video streaming control messages.
        private: transport::PublisherPtr videoPub;
  
        private: QPushButton *mButton;
        private: bool mVideoON;
        private: void enable();
        private: void disable();
      };
  }
  #endif
  
  