SpikeTrace Class Reference

#include <spiketrace.h>

Inheritance diagram for SpikeTrace:

Collaboration diagram for SpikeTrace:

Public Slots
void	setSpike (bool on)
void	setPause (bool pause)

Public Member Functions
	SpikeTrace (double spikewidth=1.0, int radius=6, int tracewidth=1, QWidget *parent=0)
	SpikeTrace (QWidget *parent=0)
	~SpikeTrace (void)
QSize	sizeHint (void) const
QSize	minimumSizeHint (void) const
QSizePolicy	sizePolicy (void) const

Protected Member Functions
void	run (void)
void	animate (void)
int	trace (int x)
void	resizeEvent (QResizeEvent *qre)
void	paintEvent (QPaintEvent *qpe)
void	customEvent (QEvent *qce)

Protected Attributes
bool	Show
bool	Pause
int	Pos
int	pPos
int	dPos
int	Radius
int	TraceWidth
double	SpikeSize
double	SpikePos
double	SpikeWidth
QMutex	SMutex
SpikeTraceThread *	Thread

Friends
class	SpikeTraceThread

Detailed Description

A nice, almost useless widget, showing an animated trace of a spike.

Author

Jan Benda

Version

1.0 The SpikeTrace-widget shows a darkgreen voltage trace with a single spike. A green ball is running from left to right along the trace. At each repetition the position of the spike is changed randomly. This is like the trace on an oscilloscope.

Use setSpike() to toggle this animation completly on and off. With setPause() the animation can be stopped and restarted.

Reimplementate trace() to get a better trace.

Constructor & Destructor Documentation

SpikeTrace	(	double	spikewidth = 1.0,
		int	radius = 6,
		int	tracewidth = 1,
		QWidget *	parent = 0
	)

Constructs the SpikeTrace-widget with the width of the spike set to spikewidth pixels, the radius of the ball set to radius pixels, and the width of the trace set to linewidth pixels.

References SpikeTrace::dPos, SpikeTrace::Pause, SpikeTrace::Pos, SpikeTrace::Radius, SpikeTrace::Show, SpikeTrace::SpikePos, SpikeTrace::SpikeSize, SpikeTrace::SpikeTraceThread, SpikeTrace::SpikeWidth, SpikeTrace::Thread, and SpikeTrace::TraceWidth.

SpikeTrace

(

QWidget *

parent = 0

)

Constructs the SpikeTrace-widget with default parameters.

References SpikeTrace::dPos, SpikeTrace::Pause, SpikeTrace::Pos, SpikeTrace::pPos, SpikeTrace::Radius, SpikeTrace::Show, SpikeTrace::SpikePos, SpikeTrace::SpikeSize, SpikeTrace::SpikeTraceThread, SpikeTrace::SpikeWidth, SpikeTrace::Thread, and SpikeTrace::TraceWidth.

~SpikeTrace

(

void

)

Destructs the SpikeTrace-widget.

Member Function Documentation

QSize sizeHint

(

void

)

const

Give a hint for the prefered size of this widget.

References SpikeTrace::Radius.

QSize minimumSizeHint

(

void

)

const

Give a hint for the minimum size of this widget.

References SpikeTrace::Radius.

Referenced by SaveFiles::SaveFiles().

QSizePolicy sizePolicy

(

void

)

const

Make this widget stretchable in both directions.

void setSpike ( bool  on )

slot

Switch the spike trace on or off.

References SpikeTrace::Pos, SpikeTrace::pPos, SpikeTrace::Radius, SpikeTrace::Show, SpikeTrace::SMutex, and SpikeTrace::Thread.

Referenced by SaveFiles::closeFiles(), and SaveFiles::openFiles().

void setPause ( bool  pause )

slot

Stop and start animation.

References SpikeTrace::Pause, and SpikeTrace::SMutex.

Referenced by SaveFiles::openFiles(), and SaveFiles::writeToggle().

void run ( void  )

protected

References SpikeTraceThread::msleep(), SpikeTrace::Pause, SpikeTrace::Show, SpikeTrace::SMutex, and SpikeTrace::Thread.

Referenced by SpikeTraceThread::run().

void animate ( void  )

protected

Animates the spike trace by increasing the position of the ball and replace the spike on a new run.

References SpikeTrace::dPos, SpikeTrace::Pos, SpikeTrace::pPos, SpikeTrace::Radius, SpikeTrace::SpikePos, and SpikeTrace::SpikeWidth.

Referenced by SpikeTrace::paintEvent().

int trace ( int  x )

protected

A function providing the shape of the trace. For a given position x in pixels it returns the corresponding y-value (in pixels).

References relacs::exp(), SpikeTrace::SpikePos, SpikeTrace::SpikeSize, and SpikeTrace::SpikeWidth.

Referenced by SpikeTrace::paintEvent().

void resizeEvent ( QResizeEvent *  qre )

protected

Handles the resize event. It scales the position of the spike and its size appropriately.

References SpikeTrace::Radius, SpikeTrace::SMutex, SpikeTrace::SpikePos, and SpikeTrace::SpikeSize.

void paintEvent ( QPaintEvent *  qpe )

protected

Paints the spike trace.

References SpikeTrace::animate(), SpikeTrace::Pos, SpikeTrace::Radius, SpikeTrace::Show, SpikeTrace::SMutex, SpikeTrace::trace(), and SpikeTrace::TraceWidth.

void customEvent ( QEvent *  qce )

protected

Post update() to the GUI thread.

Friends And Related Function Documentation

friend class SpikeTraceThread

friend

Referenced by SpikeTrace::SpikeTrace().

Member Data Documentation

bool Show

protected

If true, the trace is painted.

Referenced by SpikeTrace::paintEvent(), SpikeTrace::run(), SpikeTrace::setSpike(), and SpikeTrace::SpikeTrace().

bool Pause

protected

If true, no animation is done.

Referenced by SpikeTrace::run(), SpikeTrace::setPause(), and SpikeTrace::SpikeTrace().

int Pos

protected

Position of the ball in pixel.

Referenced by SpikeTrace::animate(), SpikeTrace::paintEvent(), SpikeTrace::setSpike(), and SpikeTrace::SpikeTrace().

int pPos

protected

Previous position of the ball in pixel.

Referenced by SpikeTrace::animate(), SpikeTrace::setSpike(), and SpikeTrace::SpikeTrace().

int dPos

protected

Increment of the ball's position in pixel.

Referenced by SpikeTrace::animate(), and SpikeTrace::SpikeTrace().

int Radius

protected

Radius of the ball.

Referenced by SpikeTrace::animate(), SpikeTrace::minimumSizeHint(), SpikeTrace::paintEvent(), SpikeTrace::resizeEvent(), SpikeTrace::setSpike(), SpikeTrace::sizeHint(), and SpikeTrace::SpikeTrace().

int TraceWidth

protected

Width of the trace line.

Referenced by SpikeTrace::paintEvent(), and SpikeTrace::SpikeTrace().

double SpikeSize

protected

The current size of the spike in pixel.

Referenced by SpikeTrace::resizeEvent(), SpikeTrace::SpikeTrace(), and SpikeTrace::trace().

double SpikePos

protected

The position of the spike.

Referenced by SpikeTrace::animate(), SpikeTrace::resizeEvent(), SpikeTrace::SpikeTrace(), and SpikeTrace::trace().

double SpikeWidth

protected

The width of the spike.

Referenced by SpikeTrace::animate(), SpikeTrace::SpikeTrace(), and SpikeTrace::trace().

QMutex SMutex

protected

Locks the widget's variables.

Referenced by SpikeTrace::paintEvent(), SpikeTrace::resizeEvent(), SpikeTrace::run(), SpikeTrace::setPause(), and SpikeTrace::setSpike().

SpikeTraceThread* Thread

protected

Referenced by SpikeTrace::run(), SpikeTrace::setSpike(), and SpikeTrace::SpikeTrace().

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

• spiketrace.h
• spiketrace.cc