ValueProxy Class Reference

Base class for value proxies. Value proxy allows to decouple the displayed value from the values accessed within the program. For example, one may want to display Fahrenheit while still working with Celsius. More...

#include <valueProxy.h>

Inheritance diagram for ValueProxy:

Public Types
typedef QObject	Superclass

Public Slots
void	setValue (double newValue)
void	setProxyValue (double newProxyValue)

Signals
void	valueChanged (double)
void	proxyValueChanged (double)
void	proxyAboutToBeModified ()
void	proxyModified ()

Public Member Functions
	ValueProxy (QObject *parent=0)
virtual double	proxyValueFromValue (double value) const =0
virtual double	valueFromProxyValue (double proxyValue) const =0
double	value () const
virtual double	proxyValue () const

Protected Member Functions
void	updateProxyValue ()
void	updateValue ()

Protected Attributes
QScopedPointer< ValueProxyPrivate >	d_ptr

Properties
double	value
double	proxyValue

Private Member Functions
	Q_DECLARE_PRIVATE (ValueProxy)
	Q_DISABLE_COPY (ValueProxy)

Detailed Description

Base class for value proxies. Value proxy allows to decouple the displayed value from the values accessed within the program. For example, one may want to display Fahrenheit while still working with Celsius.

A ValueProxy can be used by connecting signal/slots to the value and proxyValue properties or by using directly the valueFromProxyValue and proxyValueFromValue functions.

Subclasses should reimplement the function proxyValueFromValue() and valueFromProxyValue().

See also

LinearValueProxy

Member Function Documentation

updateProxyValue()

void ValueProxy::updateProxyValue ( )

protected

Utilities function for subclasses. Can be called to update the value/proxyValue from the proxyValue/value.

Property Documentation

proxyValue

double ValueProxy::proxyValue

readwrite

The proxy value holds the value transformed. If the value proxy is considered as a function, then the proxy value is the result of this function applied to value. The proxy value is updated if the value is changed.

value

double ValueProxy::value

readwrite

The value holds the current value. If the value proxy is considered as a function, then this function applied to the value is the proxy value. The value is updated if the proxy value is changed.

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The documentation for this class was generated from the following files:

• C:/Workspace/itom_development_VS2019_Qt5.15.2_x64/itomProject/itom/itomWidgets/valueProxy.h
• C:/Workspace/itom_development_VS2019_Qt5.15.2_x64/itomProject/itom/itomWidgets/valueProxy.cpp