valueProxy.h

/*=========================================================================
 
  Library:   CTK
 
  Copyright (c) Kitware Inc.
 
  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.txt
 
  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 VALUEPROXY_H
#define VALUEPROXY_H
 
// Qt includes
#include <QObject>
#include <QScopedPointer>
 
#include "commonWidgets.h"
 
class ValueProxyPrivate;
 
class ITOMWIDGETS_EXPORT ValueProxy : public QObject
{
  Q_OBJECT
 
  Q_PROPERTY(double value READ value WRITE setValue NOTIFY valueChanged)
 
  
  Q_PROPERTY(double proxyValue READ proxyValue WRITE setProxyValue NOTIFY proxyValueChanged)
 
public:
  typedef QObject Superclass;
  explicit ValueProxy(QObject* parent = 0);
  virtual ~ValueProxy();
 
  virtual double proxyValueFromValue(double value) const = 0;
  virtual double valueFromProxyValue(double proxyValue) const = 0;
 
  double value() const;
  virtual double proxyValue() const;
 
public Q_SLOTS:
  void setValue(double newValue);
  void setProxyValue(double newProxyValue);
 
Q_SIGNALS:
  void valueChanged(double);
  void proxyValueChanged(double);
 
  void proxyAboutToBeModified();
  void proxyModified();
 
protected:
  QScopedPointer<ValueProxyPrivate> d_ptr;
 
  void updateProxyValue();
  void updateValue();
 
private:
  Q_DECLARE_PRIVATE(ValueProxy);
  Q_DISABLE_COPY(ValueProxy);
};
 
#endif