DtProgressiveLineGraph Class Reference

Widget which draws a line graphic where the data is progressively added over time. More...

Inheritance diagram for DtProgressiveLineGraph:

Classes
struct	Set

Public Member Functions
	DtProgressiveLineGraph (int rangeMin, int rangeMax, bool autoScale, QWidget *parent)
	CTOR for creating the graph.
virtual	~DtProgressiveLineGraph ()
	DTOR for graph.
void	addSet (int set, QPen pen, int initial, bool valueCentered=false)
	Add a set with a color and initial value.
void	insertValue (int set, double percent, int value)
	Insert a value into the middle of the graph.
virtual void	resetAllValues (int value)
	Clear all sets and insert the initial value.
virtual void	resetValues (int set, int value)
	Clear the values and insert the initial value.
virtual void	clearValues (int set)
	Clear the values.
virtual void	clearAllValues ()
	Clear all sets.
virtual void	offsetPercentages (double percentOffset)
	Offset the percentages of all the values.
virtual void	offsetPercentages (int set, double percentOffset)
	Offset the percentages of a set of values.
virtual void	setRange (int min, int max)
	Sets the minimum and maximum range of the points.
virtual int	rangeMinimum () const
	Get the Range minimum and maximum.
virtual int	rangeMaximum () const
virtual bool	autoScale () const
	Get whether auto scaling is used.
virtual void	setAutoScale (bool value)
	Set whether auto scaling is used.
virtual void	setNegativeReflection (bool positive)
	Set whether the scale is a reflect negative scale.
virtual void	useBackgroundGradient (bool useIt)
	Set if the background gradient is used.
virtual bool	usesBackgroundGradient () const
	Get if the background gradient is used.
virtual void	drawAsVerticalLines (bool useVerticalLines)
	Set whether vertical line samples are used instead of connected samples.
virtual bool	usesVerticalLines () const
	Get whether vertical line samples are used instead of connected samples.
void	forceUpdate (bool widgetUpdate)
	Force a redraw and optionally a widget update.

Protected Types
typedef std::list< std::pair < double, int > >	PercentValueMap
typedef std::map< int, DtProgressiveLineGraph::Set * >	SetMap

Protected Member Functions
virtual void	resizeEvent (QResizeEvent *e)
	Resize event needed to resize back buffer.
virtual void	paintEvent (QPaintEvent *)
	Draw the widget.
virtual void	draw (QPainter &painter, const QRect &rect)
	Draw the control.
virtual void	paintBackground (QPainter &painter)
	Paint background.
virtual int	getSeparation () const
	Get the line separation count.
virtual void	paintLines (QPainter &, Set &set)
	Function to draw the lines in the foreground color.
virtual int	desiredRange () const
	Get the desired Range.
void	paintVerticalLines (PercentValueMap &set, QRectF svp, int rangeHeight, QPainter &painter, QPen pen, bool centered)
	Draw the graph as vertical lines.
void	paintConnectedLines (PercentValueMap &set, QRectF svp, int rangeHeight, QPainter &painter, QPen pen)
	Draw the graph as a connected line.
int	desiredMinimum () const
	Get the desired minimum.

Protected Attributes
int	myInitialMinimumRange
int	myInitialMaximumRange
int	myMinimumRange
int	myMaximumRange
bool	myAutoScale
bool	myActive
SetMap	mySets
QPixmap	myGradBack
QPixmap *	myLineBuffer
QPolygon *	myPointCache
bool	myUseCachedGraph
bool	myUseGradient
bool	myGraphNeedsUpdating
bool	myUseVerticalLines
bool	myNegativeReflection

Detailed Description

Widget which draws a line graphic where the data is progressively added over time.

This is a strait QT Widget which may be moved into other MAK Products, as such it is not in the MAKvrExchange namespace.

Member Typedef Documentation

typedef std::list<std::pair<double,int> > DtProgressiveLineGraph::PercentValueMap

protected

typedef std::map<int,DtProgressiveLineGraph::Set*> DtProgressiveLineGraph::SetMap

protected

Constructor & Destructor Documentation

DtProgressiveLineGraph::DtProgressiveLineGraph	(	int	rangeMin,
		int	rangeMax,
		bool	autoScale,
		QWidget *	parent
	)

CTOR for creating the graph.

virtual DtProgressiveLineGraph::~DtProgressiveLineGraph ( )

virtual

DTOR for graph.

Member Function Documentation

void DtProgressiveLineGraph::addSet	(	int	set,
		QPen	pen,
		int	initial,
		bool	valueCentered = false
	)

Add a set with a color and initial value.

virtual bool DtProgressiveLineGraph::autoScale ( ) const

virtual

Get whether auto scaling is used.

Auto scale will change the range dynamically as points are added.

virtual void DtProgressiveLineGraph::clearAllValues ( )

virtual

Clear all sets.

virtual void DtProgressiveLineGraph::clearValues ( int  set )

virtual

Clear the values.

int DtProgressiveLineGraph::desiredMinimum ( ) const

protected

Get the desired minimum.

virtual int DtProgressiveLineGraph::desiredRange ( ) const

protectedvirtual

Get the desired Range.

virtual void DtProgressiveLineGraph::draw ( QPainter &  painter, const QRect &  rect  )

protectedvirtual

Draw the control.

virtual void DtProgressiveLineGraph::drawAsVerticalLines ( bool  useVerticalLines )

virtual

Set whether vertical line samples are used instead of connected samples.

void DtProgressiveLineGraph::forceUpdate

(

bool

widgetUpdate

)

Force a redraw and optionally a widget update.

virtual int DtProgressiveLineGraph::getSeparation ( ) const

protectedvirtual

Get the line separation count.

void DtProgressiveLineGraph::insertValue	(	int	set,
		double	percent,
		int	value
	)

Insert a value into the middle of the graph.

virtual void DtProgressiveLineGraph::offsetPercentages ( double  percentOffset )

virtual

Offset the percentages of all the values.

Any value with a negative percentage or a percentage > 100 will be dropped.

virtual void DtProgressiveLineGraph::offsetPercentages ( int  set, double  percentOffset  )

virtual

Offset the percentages of a set of values.

Any value with a negative percentage or a percentage > 100 will be dropped.

virtual void DtProgressiveLineGraph::paintBackground ( QPainter &  painter )

protectedvirtual

Paint background.

void DtProgressiveLineGraph::paintConnectedLines ( PercentValueMap &  set, QRectF  svp, int  rangeHeight, QPainter &  painter, QPen  pen  )

protected

Draw the graph as a connected line.

virtual void DtProgressiveLineGraph::paintEvent ( QPaintEvent *  )

protectedvirtual

Draw the widget.

virtual void DtProgressiveLineGraph::paintLines ( QPainter &  , Set &  set  )

protectedvirtual

Function to draw the lines in the foreground color.

void DtProgressiveLineGraph::paintVerticalLines ( PercentValueMap &  set, QRectF  svp, int  rangeHeight, QPainter &  painter, QPen  pen, bool  centered  )

protected

Draw the graph as vertical lines.

virtual int DtProgressiveLineGraph::rangeMaximum ( ) const

virtual

virtual int DtProgressiveLineGraph::rangeMinimum ( ) const

virtual

Get the Range minimum and maximum.

virtual void DtProgressiveLineGraph::resetAllValues ( int  value )

virtual

Clear all sets and insert the initial value.

virtual void DtProgressiveLineGraph::resetValues ( int  set, int  value  )

virtual

Clear the values and insert the initial value.

virtual void DtProgressiveLineGraph::resizeEvent ( QResizeEvent *  e )

protectedvirtual

Resize event needed to resize back buffer.

virtual void DtProgressiveLineGraph::setAutoScale ( bool  value )

virtual

Set whether auto scaling is used.

Auto scale will change the range dynamically as points are added.

virtual void DtProgressiveLineGraph::setNegativeReflection ( bool  positive )

virtual

Set whether the scale is a reflect negative scale.

virtual void DtProgressiveLineGraph::setRange ( int  min, int  max  )

virtual

Sets the minimum and maximum range of the points.

As points are scaled clipped to the min and max. when drawn.

virtual void DtProgressiveLineGraph::useBackgroundGradient ( bool  useIt )

virtual

Set if the background gradient is used.

virtual bool DtProgressiveLineGraph::usesBackgroundGradient ( ) const

virtual

Get if the background gradient is used.

virtual bool DtProgressiveLineGraph::usesVerticalLines ( ) const

virtual

Get whether vertical line samples are used instead of connected samples.

Member Data Documentation

bool DtProgressiveLineGraph::myActive

protected

bool DtProgressiveLineGraph::myAutoScale

protected

QPixmap DtProgressiveLineGraph::myGradBack

protected

bool DtProgressiveLineGraph::myGraphNeedsUpdating

protected

int DtProgressiveLineGraph::myInitialMaximumRange

protected

int DtProgressiveLineGraph::myInitialMinimumRange

protected

QPixmap* DtProgressiveLineGraph::myLineBuffer

protected

int DtProgressiveLineGraph::myMaximumRange

protected

int DtProgressiveLineGraph::myMinimumRange

protected

bool DtProgressiveLineGraph::myNegativeReflection

protected

QPolygon* DtProgressiveLineGraph::myPointCache

protected

SetMap DtProgressiveLineGraph::mySets

protected

bool DtProgressiveLineGraph::myUseCachedGraph

protected

bool DtProgressiveLineGraph::myUseGradient

protected

bool DtProgressiveLineGraph::myUseVerticalLines

protected

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

• progressiveLineGraph.h