float_property.h

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/*
 * Copyright (c) 2012, Willow Garage, Inc.
 * 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 the Willow Garage, Inc. 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 AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */
#ifndef FLOAT_PROPERTY_H
#define FLOAT_PROPERTY_H
 
#include <rviz/properties/property.h>
 
namespace rviz
{
class FloatProperty : public Property
{
  Q_OBJECT
public:
  FloatProperty(const QString& name = QString(),
                float default_value = 0,
                const QString& description = QString(),
                Property* parent = nullptr);
 
  template <typename Func, typename R>
  FloatProperty(const QString& name,
                float default_value,
                const QString& description,
                Property* parent,
                Func&& changed_slot,
                const R* receiver)
    : FloatProperty(name, default_value, description, parent)
  {
    connect(receiver, std::forward<Func>(changed_slot));
  }
 
  // this variant is required to allow omitting the receiver argument
  template <typename Func, typename P>
  FloatProperty(const QString& name,
                float default_value,
                const QString& description,
                P* parent,
                Func&& changed_slot)
    : FloatProperty(name, default_value, description, parent)
  {
    connect(parent, std::forward<Func>(changed_slot));
  }
 
  bool setValue(const QVariant& new_value) override;
 
  virtual float getFloat() const
  {
    return getValue().toFloat();
  }
 
  void setMin(float min);
  float getMin()
  {
    return min_;
  }
  void setMax(float max);
  float getMax()
  {
    return max_;
  }
 
public Q_SLOTS:
  bool setFloat(float new_value)
  {
    return setValue(new_value);
  }
 
  bool add(float delta)
  {
    return setValue(delta + getValue().toFloat());
  }
 
  bool multiply(float factor)
  {
    return setValue(factor * getValue().toFloat());
  }
 
private:
  float min_;
  float max_;
};
 
} // end namespace rviz
 
#endif // FLOAT_PROPERTY_H