(C++) LedWidget

ledwidget.h


//---------------------------------------------------------------------------

/*

LedWidget, Widget for the Led class

Copyright (C) 2011 Richel Bilderbeek



This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppLedWidget.htm

//---------------------------------------------------------------------------

#ifndef LEDWIDGET_H

#define LEDWIDGET_H

//---------------------------------------------------------------------------

#include <boost/scoped_ptr.hpp>

#include <boost/signals2.hpp>

//---------------------------------------------------------------------------

#include "widget.h"

//---------------------------------------------------------------------------

struct Led;

//---------------------------------------------------------------------------

///Widget for displaying a Led

struct LedWidget : public Widget

{

  LedWidget(

    const int x = 0,

    const int y = 0,

    const int width = 100,

    const int height = 100,

    const double intensity    = 0.0,

    const unsigned char red   = 255,

    const unsigned char green =   0,

    const unsigned char blue  =   0

  );



  ///Obtain a read-only pointer to Led

  const Led * GetLed() const { return m_led.get(); }



  ///Obtain a read-and-write pointer to Led

  Led * GetLed() { return m_led.get(); }



  ///Obtain the version of this class

  static const std::string GetVersion();



  ///Obtain the version history of this class

  static const std::vector<std::string> GetVersionHistory();



  private:

  ///The LED

  boost::scoped_ptr<Led> m_led;



  friend std::ostream& operator<<(std::ostream& os, const LedWidget& widget);

};

//---------------------------------------------------------------------------

std::ostream& operator<<(std::ostream& os, const LedWidget& widget);

//---------------------------------------------------------------------------

#endif // LEDWIDGET_H

ledwidget.cpp


//---------------------------------------------------------------------------

/*

LedWidget, Widget for the Led class

Copyright (C) 2011 Richel Bilderbeek



This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppLedWidget.htm

//---------------------------------------------------------------------------

#include <iostream>

//---------------------------------------------------------------------------

#include "led.h"

#include "ledwidget.h"

//---------------------------------------------------------------------------

LedWidget::LedWidget(

  const int x,

  const int y,

  const int width,

  const int height,

  const double intensity,

  const unsigned char red,

  const unsigned char green,

  const unsigned char blue)

  : m_led(new Led(intensity,red,green,blue))

{

  this->SetGeometry(Rect(x,y,width,height));

}

//---------------------------------------------------------------------------

const std::string LedWidget::GetVersion()

{

  return "1.3";

}

//---------------------------------------------------------------------------

const std::vector<std::string> LedWidget::GetVersionHistory()

{

  std::vector<std::string> v;

  v.push_back("YYYY-MM-DD: version X.Y: [description]");

  v.push_back("2011-07-03: version 1.0: initial version");

  v.push_back("2011-08-17: Version 1.1: emit a signal when the color is changed");

  v.push_back("2011-08-20: Version 1.2: added operator<<");

  v.push_back("2011-09-08: Version 1.3: removed redundant signals");

  return v;

}

//---------------------------------------------------------------------------

std::ostream& operator<<(std::ostream& os, const LedWidget& widget)

{

  os

    << "<LedWidget>"

    << widget.GetGeometry()

    << *widget.m_led

    << "</LedWidget>";

  return os;

}

//---------------------------------------------------------------------------

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