MAKVrExchange::DtFrameratePlot Class Reference

A QwtPlot Widget customized for plotting broker framerates. More...

Inheritance diagram for MAKVrExchange::DtFrameratePlot:

Signals
void	seriesEnabledStateChanged (unsigned int seriesId, bool enabled)
	Notifies listeners that the enabled state of the series changed.

Public Member Functions
virtual	~DtFrameratePlot ()
	Virtual DTOR.
virtual void	initialize (bool showLegend)
	Applies styles to the plot.
virtual void	setShowTimeLabels (bool show)
	Sets whether the X-Axis time labels are visible.
virtual void	setLockUpdates (bool lock)
	Sets whether updates.
virtual DtFrameratePlotSeries *	createPlotSeries (unsigned int seriesId, const QColor &color, Qt::PenStyle style, const QString &dispName=QString())
	Creates a new series to display on the plot.
virtual DtFrameratePlotSeries *	createPlotSeries (unsigned int seriesId, const QPen &pen, const QString &dispName=QString())
	Creates a new series to display on the plot.
virtual bool	removeSeries (unsigned int seriesId)
	Removes the series with the given id from the plot.
virtual DtFrameratePlotSeries *	findSeries (unsigned int seriesId)
	Finds the series with the given ID and returns it.
virtual QwtLegend *	createLegend ()
	Creates a legend for the plot.
virtual void	setFixedXAxisLength (double xAxisLength)
	Set the fixed length of the X-Axis.
virtual double	fixedXAxisLength () const
	Get the currently set fixed X-Axis length.
virtual void	setLazyMinMaxEnabled (bool enabled)
	Set whether min/max calculation limiting should be enabled.
virtual bool	lazyMinMaxEnabled () const
	Get whether lazy min/max calculations are enabled.
virtual void	updateSeries (unsigned int seriesId, double t, double val)
	Updates the given series with the given values Updates the series with the given values, updates the plot's scaling, and performs a replot.
virtual void	updateAxisScaling ()
	Updates the axis scaling to show the only the data range.
virtual void	updateAxisScaling (double t)
	Updates the axis scaling to show the only the data range.
virtual double	getMaxVal () const
	Accessor for the plot's max value of all series.
virtual double	getMinVal () const
	Accessor for the plot's min value of all series.
virtual void	setSeriesEnabled (unsigned int seriesId, bool enabled)
	Sets the series with the given id to be enabled or not.
virtual void	setSeriesEnabled (QwtPlotItem *item, bool enabled)
	Sets the given series to be enabled or not.
virtual void	clear ()
	Clears the data values for all series and replots.
virtual QSize	sizeHint () const
	Returns the size hint for the plot.

Static Public Member Functions
static DtFrameratePlot *	create ()
	Instantiates and initializes a new DtFrameratePlot.
static DtFrameratePlot *	create (LegendPosition legendPos)
	Instantiates and initializes a new DtFrameratePlot.

Protected Types
typedef std::map< unsigned int, DtFrameratePlotSeries * >	SeriesMap

Protected Member Functions
	DtFrameratePlot ()
	Protected CTOR (use create(..)) This CTOR creates a plot with no legend.
	DtFrameratePlot (LegendPosition legendPos)
	Protected CTOR (use create(..)) Instantiates a new plot with grid lines and scrolling.
virtual void	recomputeMinMax () const
	Computes the plot's min and max values of all series.
virtual QPen	createPen (const QColor &color, Qt::PenStyle style=Qt::SolidLine, int width=0)
	Utility method for creating a pen with the given color and width.

Protected Attributes
SeriesMap	mySeries
LegendPosition	myLegendPosition
double	myFixedXAxisLength
double	myMaxVal
double	myMinVal
bool	myEnableLazyMinMaxFlag
bool	myDirtyMinMaxFlag
bool	myLockUpdatesFlag
bool	myDirtyPlotFlag

Static Protected Attributes
static const float	theScaleFactor
	Constant used for scaling y axis.

Detailed Description

A QwtPlot Widget customized for plotting broker framerates.

Member Typedef Documentation

typedef std::map<unsigned int,DtFrameratePlotSeries*> MAKVrExchange::DtFrameratePlot::SeriesMap

protected

Constructor & Destructor Documentation

virtual MAKVrExchange::DtFrameratePlot::~DtFrameratePlot ( )

virtual

Virtual DTOR.

MAKVrExchange::DtFrameratePlot::DtFrameratePlot ( )

protected

Protected CTOR (use create(..)) This CTOR creates a plot with no legend.

Instantiates a new plot with grid lines and scrolling

MAKVrExchange::DtFrameratePlot::DtFrameratePlot ( LegendPosition  legendPos )

protected

Protected CTOR (use create(..)) Instantiates a new plot with grid lines and scrolling.

Parameters

legendPos

where to position the legend relative to the plot.

Member Function Documentation

virtual void MAKVrExchange::DtFrameratePlot::clear ( )

virtual

Clears the data values for all series and replots.

static DtFrameratePlot* MAKVrExchange::DtFrameratePlot::create ( )

static

Instantiates and initializes a new DtFrameratePlot.

static DtFrameratePlot* MAKVrExchange::DtFrameratePlot::create ( LegendPosition  legendPos )

static

Instantiates and initializes a new DtFrameratePlot.

Parameters

legendPos

where to position the legend relative to the plot.

virtual QwtLegend* MAKVrExchange::DtFrameratePlot::createLegend ( )

virtual

Creates a legend for the plot.

virtual QPen MAKVrExchange::DtFrameratePlot::createPen ( const QColor &  color, Qt::PenStyle  style = Qt::SolidLine, int  width = 0  )

protectedvirtual

Utility method for creating a pen with the given color and width.

Parameters

color	the color to make the pen
style	the style of line to draw
width	the width of the pen

virtual DtFrameratePlotSeries* MAKVrExchange::DtFrameratePlot::createPlotSeries ( unsigned int  seriesId, const QColor &  color, Qt::PenStyle  style, const QString &  dispName = QString()  )

virtual

Creates a new series to display on the plot.

Parameters

seriesId	an integer ID uniquely identifying the series
color	the color of the series lines
style	the style of the series lines
dispName	a logical name for the series (to be displayed on the legend)

virtual DtFrameratePlotSeries* MAKVrExchange::DtFrameratePlot::createPlotSeries ( unsigned int  seriesId, const QPen &  pen, const QString &  dispName = QString()  )

virtual

Creates a new series to display on the plot.

Parameters

seriesId	an integer ID uniquely identifying the series
pen	the pen to use for the series lines
dispName	a logical name for the series (to be displayed on the legend)

virtual DtFrameratePlotSeries* MAKVrExchange::DtFrameratePlot::findSeries ( unsigned int  seriesId )

virtual

Finds the series with the given ID and returns it.

Returns

returns the series with the given ID or NULL if there wasn't one

virtual double MAKVrExchange::DtFrameratePlot::fixedXAxisLength ( ) const

virtual

Get the currently set fixed X-Axis length.

virtual double MAKVrExchange::DtFrameratePlot::getMaxVal ( ) const

virtual

Accessor for the plot's max value of all series.

If the value needs to be recomputed, does so before returning the value. Methods should use this rather than accessing the myMaxVal directly because this method will force it to be computed.

virtual double MAKVrExchange::DtFrameratePlot::getMinVal ( ) const

virtual

Accessor for the plot's min value of all series.

If the value needs to be recomputed, does so before returning the value. Methods should use this rather than accessing the myMinVal directly because this method will force it to be computed.

virtual void MAKVrExchange::DtFrameratePlot::initialize ( bool  showLegend )

virtual

Applies styles to the plot.

Parameters

showLegend	whether the plot's legend should be visible.
legendPos	where to position the legend relative to the plot.
unitLabel	label for the units of the y axis.

virtual bool MAKVrExchange::DtFrameratePlot::lazyMinMaxEnabled ( ) const

virtual

Get whether lazy min/max calculations are enabled.

virtual void MAKVrExchange::DtFrameratePlot::recomputeMinMax ( ) const

protectedvirtual

Computes the plot's min and max values of all series.

Iterates over the plot's series and determines the min and max values.

virtual bool MAKVrExchange::DtFrameratePlot::removeSeries ( unsigned int  seriesId )

virtual

Removes the series with the given id from the plot.

Parameters

seriesId

the id of the series to remove.

void MAKVrExchange::DtFrameratePlot::seriesEnabledStateChanged ( unsigned int  seriesId, bool  enabled  )

signal

Notifies listeners that the enabled state of the series changed.

Non-virtual - Signals cannot be declared virtual.

virtual void MAKVrExchange::DtFrameratePlot::setFixedXAxisLength ( double  xAxisLength )

virtual

Set the fixed length of the X-Axis.

If set, the plot will only display the most recent data points that fall in the most recent xAxisLength range. If set to 0, the plot will resize to fit all values.

virtual void MAKVrExchange::DtFrameratePlot::setLazyMinMaxEnabled ( bool  enabled )

virtual

Set whether min/max calculation limiting should be enabled.

Disabling this causes the last calculated min/max values to be stored and returned for further calls until one of the plot's series is updated. Series created by the plot inherit this setting. Note: If rescaling actions are being performed on the plot independently from the updating of the plot's series, this may need to be disabled to work correctly in conjunction with the series' onlyVisibleMinMax setting.

virtual void MAKVrExchange::DtFrameratePlot::setLockUpdates ( bool  lock )

virtual

Sets whether updates.

virtual void MAKVrExchange::DtFrameratePlot::setSeriesEnabled ( unsigned int  seriesId, bool  enabled  )

virtual

Sets the series with the given id to be enabled or not.

If the series is enabled, it is visible and its min/max values are factored into scaling calculations; if the series is disabled, it is not visible and is not used in scaling calculations.

virtual void MAKVrExchange::DtFrameratePlot::setSeriesEnabled ( QwtPlotItem *  item, bool  enabled  )

virtual

Sets the given series to be enabled or not.

If the series is enabled, it is visible and its min/max values are factored into scaling calculations; if the series is disabled, it is not visible and is not used in scaling calculations.

virtual void MAKVrExchange::DtFrameratePlot::setShowTimeLabels ( bool  show )

virtual

Sets whether the X-Axis time labels are visible.

virtual QSize MAKVrExchange::DtFrameratePlot::sizeHint ( ) const

virtual

Returns the size hint for the plot.

Overridden to allow smaller plots.

virtual void MAKVrExchange::DtFrameratePlot::updateAxisScaling ( )

virtual

Updates the axis scaling to show the only the data range.

Looks up most recently plotted time and calls updateAxisScaling( double ).

virtual void MAKVrExchange::DtFrameratePlot::updateAxisScaling ( double  t )

virtual

Updates the axis scaling to show the only the data range.

Updates the y axis scaling so all points on all series are visible. Updates the x axis scaling to respect the fixedXAxisLength (if set).

Parameters

t	the latest x axis value plotted.

virtual void MAKVrExchange::DtFrameratePlot::updateSeries ( unsigned int  seriesId, double  t, double  val  )

virtual

Updates the given series with the given values Updates the series with the given values, updates the plot's scaling, and performs a replot.

Does nothing if the series ID is invalid.

Parameters

seriesId	the id of the series to update
t	the time (x) value to update with
val	the value (y) value to update with

Member Data Documentation

bool MAKVrExchange::DtFrameratePlot::myDirtyMinMaxFlag

mutableprotected

bool MAKVrExchange::DtFrameratePlot::myDirtyPlotFlag

mutableprotected

bool MAKVrExchange::DtFrameratePlot::myEnableLazyMinMaxFlag

protected

double MAKVrExchange::DtFrameratePlot::myFixedXAxisLength

protected

LegendPosition MAKVrExchange::DtFrameratePlot::myLegendPosition

protected

bool MAKVrExchange::DtFrameratePlot::myLockUpdatesFlag

mutableprotected

double MAKVrExchange::DtFrameratePlot::myMaxVal

mutableprotected

double MAKVrExchange::DtFrameratePlot::myMinVal

mutableprotected

SeriesMap MAKVrExchange::DtFrameratePlot::mySeries

protected

const float MAKVrExchange::DtFrameratePlot::theScaleFactor

staticprotected

Constant used for scaling y axis.

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

• frameratePlot.h