#include <qwt_plot_grid.h>

Inheritance diagram for QwtPlotGrid:

Public Member Functions
	QwtPlotGrid ()
virtual	~QwtPlotGrid ()
virtual void	draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &rect) const
void	enableX (bool tf)
void	enableXMin (bool tf)
void	enableY (bool tf)
void	enableYMin (bool tf)
const QPen &	majPen () const
const QPen &	minPen () const
virtual int	rtti () const
void	setMajPen (const QPen &p)
void	setMinPen (const QPen &p)
void	setPen (const QPen &p)
void	setXDiv (const QwtScaleDiv &sx)
void	setYDiv (const QwtScaleDiv &sy)
virtual void	updateScaleDiv (const QwtScaleDiv &xMap, const QwtScaleDiv &yMap)
bool	xEnabled () const
bool	xMinEnabled () const
const QwtScaleDiv &	xScaleDiv () const
bool	yEnabled () const
bool	yMinEnabled () const
const QwtScaleDiv &	yScaleDiv () const
Public Member Functions inherited from QwtPlotItem
	QwtPlotItem (const QwtText &title=QwtText())
virtual	~QwtPlotItem ()
void	attach (QwtPlot *plot)
virtual QwtDoubleRect	boundingRect () const
void	detach ()
void	hide ()
QwtDoubleRect	invTransform (const QwtScaleMap &, const QwtScaleMap &, const QRect &) const
bool	isVisible () const
virtual void	itemChanged ()
virtual QWidget *	legendItem () const
QRect	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
QwtPlot *	plot () const
QwtDoubleRect	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
void	setAxis (int xAxis, int yAxis)
void	setItemAttribute (ItemAttribute, bool on=true)
void	setRenderHint (RenderHint, bool on=true)
void	setTitle (const QString &title)
void	setTitle (const QwtText &title)
virtual void	setVisible (bool)
void	setXAxis (int axis)
void	setYAxis (int axis)
void	setZ (double z)
void	show ()
bool	testItemAttribute (ItemAttribute) const
bool	testRenderHint (RenderHint) const
const QwtText &	title () const
QRect	transform (const QwtScaleMap &, const QwtScaleMap &, const QwtDoubleRect &) const
virtual void	updateLegend (QwtLegend *) const
int	xAxis () const
int	yAxis () const
double	z () const
Public Member Functions inherited from QwtLegendItemManager
	QwtLegendItemManager ()
virtual	~QwtLegendItemManager ()

Additional Inherited Members
Public Types inherited from QwtPlotItem
enum	ItemAttribute { Legend = 1, AutoScale = 2 }
enum	RenderHint { RenderAntialiased = 1 }
enum	RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotScale, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotSVG, Rtti_PlotUserItem = 1000 }

Detailed Description

A class which draws a coordinate grid.

The QwtPlotGrid class can be used to draw a coordinate grid. A coordinate grid consists of major and minor vertical and horizontal gridlines. The locations of the gridlines are determined by the X and Y scale divisions which can be assigned with setXDiv() and setYDiv(). The draw() member draws the grid within a bounding rectangle.

Member Function Documentation

void QwtPlotGrid::draw	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRect &	canvasRect
	)		const

virtual

Draw the grid.

The grid is drawn into the bounding rectangle such that gridlines begin and end at the rectangle's borders. The X and Y maps are used to map the scale divisions into the drawing region screen.

Parameters:

painter	Painter
xMap	X axis map
yMap	Y axis
canvasRect	Contents rect of the plot canvas

Implements QwtPlotItem.

void QwtPlotGrid::enableX ( bool tf )

Enable or disable vertical gridlines.

Parameters:

tf	Enable (true) or disable

See also:: Minor gridlines can be enabled or disabled with enableXMin()

void QwtPlotGrid::enableXMin ( bool tf )

Enable or disable minor vertical gridlines.

Parameters:

tf	Enable (true) or disable

See also:: enableX()

void QwtPlotGrid::enableY ( bool tf )

Enable or disable horizontal gridlines.

Parameters:

tf	Enable (true) or disable

See also:: Minor gridlines can be enabled or disabled with enableYMin()

void QwtPlotGrid::enableYMin ( bool tf )

Enable or disable minor horizontal gridlines.

Parameters:

tf	Enable (true) or disable

See also:: enableY()

const QPen & QwtPlotGrid::majPen ( ) const

Returns:: the pen for the major gridlines

See also:: setMajPen(), setMinPen(), setPen()

const QPen & QwtPlotGrid::minPen ( ) const

Returns:: the pen for the minor gridlines

See also:: setMinPen(), setMajPen(), setPen()

int QwtPlotGrid::rtti ( ) const

virtual

Returns:: QwtPlotItem::Rtti_PlotGrid

Reimplemented from QwtPlotItem.

void QwtPlotGrid::setMajPen ( const QPen & pen )

Assign a pen for the major gridlines

The width of non cosmetic pens is scaled according to the resolution of the paint device.

Parameters:

pen Pen

See also:: majPen(), setMinPen(), setPen(), QwtPainter::scaledPen()

void QwtPlotGrid::setMinPen ( const QPen & pen )

Assign a pen for the minor gridlines

The width of non cosmetic pens is scaled according to the resolution of the paint device.

Parameters:

pen Pen

See also:: minPen(), setMajPen(), setPen(), QwtPainter::scaledPen()

void QwtPlotGrid::setPen ( const QPen & pen )

Assign a pen for both major and minor gridlines

The width of non cosmetic pens is scaled according to the resolution of the paint device.

Parameters:

pen Pen

See also:: setMajPen(), setMinPen(), QwtPainter::scaledPen()

void QwtPlotGrid::setXDiv ( const QwtScaleDiv & scaleDiv )

Assign an x axis scale division

Parameters:

scaleDiv Scale division

void QwtPlotGrid::setYDiv ( const QwtScaleDiv & scaleDiv )

Assign a y axis division

Parameters:

scaleDiv Scale division

void QwtPlotGrid::updateScaleDiv	(	const QwtScaleDiv &	xScaleDiv,
		const QwtScaleDiv &	yScaleDiv
	)

virtual

Update the grid to changes of the axes scale division

Parameters:

xScaleDiv	Scale division of the x-axis
yScaleDiv	Scale division of the y-axis

See also:: QwtPlot::updateAxes()

Reimplemented from QwtPlotItem.

bool QwtPlotGrid::xEnabled ( ) const

Returns:: true if vertical gridlines are enabled

See also:: enableX()

bool QwtPlotGrid::xMinEnabled ( ) const

Returns:: true if minor vertical gridlines are enabled

See also:: enableXMin()

const QwtScaleDiv & QwtPlotGrid::xScaleDiv ( ) const

Returns:: the scale division of the x axis

bool QwtPlotGrid::yEnabled ( ) const

Returns:: true if horizontal gridlines are enabled

See also:: enableY()

bool QwtPlotGrid::yMinEnabled ( ) const

Returns:: true if minor horizontal gridlines are enabled

See also:: enableYMin()

const QwtScaleDiv & QwtPlotGrid::yScaleDiv ( ) const

Returns:: the scale division of the y axis

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation