HistoryProxySource

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HistoryProxySource Class Reference

#include <HistoryProxySource.h>

Inheritance diagram for HistoryProxySource:

Public Types

enum  FillMode { DoNotFill, FillFromStart, FillFromEnd }
 

Properties

FillMode fillMode
 
int interval
 
int item
 
int maximumHistory
 
ChartDataSource source
 
- Properties inherited from QObject
 objectName
 

Public Member Functions

 HistoryProxySource (QObject *parent=nullptr)
 
Q_INVOKABLE void clear ()
 
FillMode fillMode () const
 
Q_SIGNAL void fillModeChanged ()
 
QVariant first () const override
 
int interval () const
 
Q_SIGNAL void intervalChanged ()
 
QVariant item (int index) const override
 
int item () const
 
Q_SIGNAL void itemChanged ()
 
int itemCount () const override
 
QVariant maximum () const override
 
int maximumHistory () const
 
Q_SIGNAL void maximumHistoryChanged ()
 
QVariant minimum () const override
 
void setFillMode (FillMode newFillMode)
 
void setInterval (int newInterval)
 
void setItem (int newItem)
 
void setMaximumHistory (int maximumHistory)
 
void setSource (ChartDataSource *newSource)
 
ChartDataSourcesource () const
 
Q_SIGNAL void sourceChanged ()
 
- Public Member Functions inherited from ChartDataSource
 ChartDataSource (QObject *parent=nullptr)
 
Q_SIGNAL void dataChanged ()
 
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 
bool blockSignals (bool block)
 
const QObjectListchildren () const const
 
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
 
void deleteLater ()
 
void destroyed (QObject *obj)
 
bool disconnect (const char *signal, const QObject *receiver, const char *method) const const
 
bool disconnect (const QObject *receiver, const char *method) const const
 
void dumpObjectInfo ()
 
void dumpObjectInfo () const const
 
void dumpObjectTree ()
 
void dumpObjectTree () const const
 
QList< QByteArraydynamicPropertyNames () const const
 
virtual bool event (QEvent *e)
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 
findChild (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
 
bool inherits (const char *className) const const
 
void installEventFilter (QObject *filterObj)
 
bool isWidgetType () const const
 
bool isWindowType () const const
 
void killTimer (int id)
 
virtual const QMetaObjectmetaObject () const const
 
void moveToThread (QThread *targetThread)
 
QString objectName () const const
 
void objectNameChanged (const QString &objectName)
 
QObjectparent () const const
 
QVariant property (const char *name) const const
 
 Q_CLASSINFO (Name, Value)
 
 Q_DISABLE_COPY (Class)
 
 Q_DISABLE_COPY_MOVE (Class)
 
 Q_DISABLE_MOVE (Class)
 
 Q_EMIT Q_EMIT
 
 Q_ENUM (...)
 
 Q_ENUM_NS (...)
 
 Q_ENUMS (...)
 
 Q_FLAG (...)
 
 Q_FLAG_NS (...)
 
 Q_FLAGS (...)
 
 Q_GADGET Q_GADGET
 
 Q_INTERFACES (...)
 
 Q_INVOKABLE Q_INVOKABLE
 
 Q_NAMESPACE Q_NAMESPACE
 
 Q_NAMESPACE_EXPORT (EXPORT_MACRO)
 
 Q_OBJECT Q_OBJECT
 
 Q_PROPERTY (...)
 
 Q_REVISION Q_REVISION
 
 Q_SET_OBJECT_NAME (Object)
 
 Q_SIGNAL Q_SIGNAL
 
 Q_SIGNALS Q_SIGNALS
 
 Q_SLOT Q_SLOT
 
 Q_SLOTS Q_SLOTS
 
qFindChild (const QObject *obj, const QString &name)
 
QList< T > qFindChildren (const QObject *obj, const QRegExp &regExp)
 
QList< T > qFindChildren (const QObject *obj, const QString &name)
 
qobject_cast (QObject *object)
 
qobject_cast (const QObject *object)
 
 QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
 
void removeEventFilter (QObject *obj)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const char *name, const QVariant &value)
 
bool signalsBlocked () const const
 
int startTimer (int interval, Qt::TimerType timerType)
 
int startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
 
QThreadthread () const const
 

Additional Inherited Members

- Static Public Member Functions inherited from QObject
QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
 
bool disconnect (const QMetaObject::Connection &connection)
 
bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
 
bool disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
 
bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
 
QString tr (const char *sourceText, const char *disambiguation, int n)
 
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
 
- Public Attributes inherited from QObject
typedef QObjectList
 
- Protected Member Functions inherited from QObject
virtual void childEvent (QChildEvent *event)
 
virtual void connectNotify (const QMetaMethod &signal)
 
virtual void customEvent (QEvent *event)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
bool isSignalConnected (const QMetaMethod &signal) const const
 
int receivers (const char *signal) const const
 
QObjectsender () const const
 
int senderSignalIndex () const const
 
virtual void timerEvent (QTimerEvent *event)
 

Detailed Description

A data source that provides a history of a single item of a different data source.

This data source will monitor a single item of another data source for changes and record them, exposing historical values as

Definition at line 24 of file HistoryProxySource.h.

Member Enumeration Documentation

The different fill modes.

These determine the value returned by itemCount and what happens when requesting an item that does not have a value in the history.

Enumerator
DoNotFill 

Do not fill with any items.

The source's itemCount will be equal to the number of items in the history.

FillFromStart 

Fill with empty values, starting at 0.

The source's itemCount will be equal to maximumHistory. Items that do not have a value in the history will return a default-constructed value based on the first item of the source.

FillFromEnd 

Fill with empty values, placing partial history at the end.

This means that the first recorded history item will be shown at position maximumHistory - 1, the second at maximumHistory - 2 and so on, until maximumHistory is reached, after which items will be discarded normally.

Definition at line 84 of file HistoryProxySource.h.

Property Documentation

HistoryProxySource::FillMode HistoryProxySource::fillMode
readwrite

The fill mode.

This determines what happens when there is not enough history yet. See FillMode for which modes are available.

The default is DoNotFill.

Note
Changing this property will clear the existing history.

Definition at line 75 of file HistoryProxySource.h.

int HistoryProxySource::interval
readwrite

The interval, in milliseconds, with which to query the data source.

If set to a value <= 0, a new item will be added whenever source changes. Otherwise, source will be sampled every interval milliseconds and a new item will be added with whatever value it has at that point, even if it did not change.

The default is 0.

Definition at line 64 of file HistoryProxySource.h.

int HistoryProxySource::item
readwrite

The item of the data source to read data from.

This item will be read either when the source's dataChanged has been emitted or on an interval if interval has been set.

The default is 0.

Note
Changing this property will clear the existing history.

Definition at line 47 of file HistoryProxySource.h.

int HistoryProxySource::maximumHistory
readwrite

The maximum amount of history to keep.

The default is 10.

Definition at line 53 of file HistoryProxySource.h.

ChartDataSource * HistoryProxySource::source
readwrite

The data source to read data from.

This will use the item at item from the provided source and use that to fill the history of this source.

Note
Changing this property will clear the existing history.

Definition at line 36 of file HistoryProxySource.h.

Member Function Documentation

void HistoryProxySource::clear ( )

Clear the entire history of this source.

Definition at line 210 of file HistoryProxySource.cpp.


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