#include <qwt_plot_grid.h>

Inherits QwtPlotItem.

Public Types
enum	ItemAttribute { Legend = 0x01, AutoScale = 0x02 }
typedef QFlags< ItemAttribute >	ItemAttributes
enum	RenderHint { RenderAntialiased = 1 }
typedef QFlags< RenderHint >	RenderHints
enum	RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotScale, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotSpectroCurve, Rtti_PlotIntervalCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotSVG, Rtti_PlotUserItem = 1000 }
Public Member Functions
void	attach (QwtPlot *plot)
virtual QRectF	boundingRect () const
void	detach ()
virtual void	draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &rect) const
virtual void	drawLegendIdentifier (QPainter *, const QRectF &) const
void	enableX (bool tf)
void	enableXMin (bool tf)
void	enableY (bool tf)
void	enableYMin (bool tf)
void	hide ()
bool	isVisible () const
virtual void	itemChanged ()
virtual QWidget *	legendItem () const
const QPen &	majPen () const
const QPen &	minPen () const
QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
QwtPlot *	plot () const
	QwtPlotGrid ()
virtual int	rtti () const
QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
void	setAxes (int xAxis, int yAxis)
void	setItemAttribute (ItemAttribute, bool on=true)
void	setMajPen (const QPen &p)
void	setMinPen (const QPen &p)
void	setPen (const QPen &p)
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	setXDiv (const QwtScaleDiv &sx)
void	setYAxis (int axis)
void	setYDiv (const QwtScaleDiv &sy)
void	setZ (double z)
void	show ()
bool	testItemAttribute (ItemAttribute) const
bool	testRenderHint (RenderHint) const
const QwtText &	title () const
virtual void	updateLegend (QwtLegend *) const
virtual void	updateScaleDiv (const QwtScaleDiv &xMap, const QwtScaleDiv &yMap)
int	xAxis () const
bool	xEnabled () const
bool	xMinEnabled () const
const QwtScaleDiv &	xScaleDiv () const
int	yAxis () const
bool	yEnabled () const
bool	yMinEnabled () const
const QwtScaleDiv &	yScaleDiv () const
double	z () const
virtual	~QwtPlotGrid ()

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 Typedef Documentation

typedef QFlags<ItemAttribute> QwtPlotItem::ItemAttributes [inherited]

Plot Item Attributes.

typedef QFlags<RenderHint> QwtPlotItem::RenderHints [inherited]

Render hints.

Member Enumeration Documentation

enum QwtPlotItem::ItemAttribute [inherited]

Plot Item Attributes

See also:: setItemAttribute(), testItemAttribute()

Enumerator:

Legend	The item is represented on the legend.
AutoScale	The boundingRect() of the item is included in the autoscaling calculation.

enum QwtPlotItem::RenderHint [inherited]

Render hints.

Enumerator:

RenderAntialiased

Enable antialiasing.

enum QwtPlotItem::RttiValues [inherited]

Runtime type information.

RttiValues is used to cast plot items, without having to enable runtime type information of the compiler.

Enumerator:

Rtti_PlotItem	Unspecific value, that can be used, when it doesn't matter.
Rtti_PlotGrid	For QwtPlotGrid.
Rtti_PlotScale	For QwtPlotScaleItem.
Rtti_PlotMarker	For QwtPlotMarker.
Rtti_PlotCurve	For QwtPlotCurve.
Rtti_PlotSpectroCurve	For QwtPlotSpectroCurve.
Rtti_PlotIntervalCurve	For QwtPlotIntervalCurve.
Rtti_PlotHistogram	For QwtPlotHistogram.
Rtti_PlotSpectrogram	For QwtPlotSpectrogram.
Rtti_PlotSVG	For QwtPlotSvgItem.
Rtti_PlotUserItem	Values >= Rtti_PlotUserItem are reserved for plot items not implemented in the Qwt library.

Constructor & Destructor Documentation

QwtPlotGrid::QwtPlotGrid ( ) [explicit]

Enables major grid, disables minor grid.

QwtPlotGrid::~QwtPlotGrid ( ) [virtual]

Destructor.

Member Function Documentation

void QwtPlotItem::attach ( QwtPlot * plot ) [inherited]

Attach the item to a plot.

This method will attach a QwtPlotItem to the QwtPlot argument. It will first detach the QwtPlotItem from any plot from a previous call to attach (if necessary). If a NULL argument is passed, it will detach from any QwtPlot it was attached to.

Parameters:

plot	Plot widget

See also:: detach()

QRectF QwtPlotItem::boundingRect ( ) const [virtual, inherited]

Returns:: An invalid bounding rect: QRectF(1.0, 1.0, -2.0, -2.0)

Reimplemented in QwtPlotIntervalCurve, QwtPlotMarker, QwtPlotRasterItem, QwtPlotHistogram, QwtPlotSeriesItem< T >, QwtPlotSeriesItem< QwtIntervalSample >, QwtPlotSeriesItem< QPointF >, QwtPlotSeriesItem< QwtPoint3D >, and QwtPlotSvgItem.

void QwtPlotItem::detach ( ) [inherited]

This method detaches a QwtPlotItem from any QwtPlot it has been associated with.

detach() is equivalent to calling attach( NULL )

See also:: attach()

void QwtPlotGrid::draw	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	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.

virtual void QwtLegendItemManager::drawLegendIdentifier	(	QPainter *	,
		const QRectF &
	)		const `[inline, virtual, inherited]`

QwtLegendItem can display an icon-identifier followed by a text. The icon helps to identify a plot item on the plot canvas and depends on the type of information, that is displayed.

The default implementation paints nothing.

Reimplemented in QwtPlotCurve, QwtPlotIntervalCurve, QwtPlotMarker, and QwtPlotHistogram.

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()

void QwtPlotItem::hide ( ) [inherited]

Hide the item.

bool QwtPlotItem::isVisible ( ) const [inherited]

Returns:: true if visible

See also:: setVisible(), show(), hide()

void QwtPlotItem::itemChanged ( ) [virtual, inherited]

Update the legend and call QwtPlot::autoRefresh for the parent plot.

See also:: updateLegend()

QWidget * QwtPlotItem::legendItem ( ) const [virtual, inherited]

Allocate the widget that represents the item on the legend.

The default implementation returns a QwtLegendItem(), but an item could be represented by any type of widget, by overloading legendItem() and updateLegend().

Returns:: QwtLegendItem()

See also:: updateLegend() QwtLegend()

Implements QwtLegendItemManager.

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()

QRectF QwtPlotItem::paintRect	(	const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap
	)		const `[inherited]`

Calculate the bounding paint rect of 2 maps.

Parameters:

xMap	X map
yMap	X map

Returns:: Bounding paint rect of the scale maps, normalized

QwtPlot * QwtPlotItem::plot ( ) const [inherited]

Return attached plot.

int QwtPlotGrid::rtti ( ) const [virtual]

Returns:: QwtPlotItem::Rtti_PlotGrid

Reimplemented from QwtPlotItem.

QRectF QwtPlotItem::scaleRect	(	const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap
	)		const `[inherited]`

Calculate the bounding scale rect of 2 maps.

Parameters:

xMap	X map
yMap	X map

Returns:: Bounding scale rect of the scale maps, normalized

void QwtPlotItem::setAxes	(	int	xAxis,
		int	yAxis
	)		`[inherited]`

Set X and Y axis

The item will painted according to the coordinates its Axes.

Parameters:

xAxis	X Axis
yAxis	Y Axis

See also:: setXAxis(), setYAxis(), xAxis(), yAxis()

void QwtPlotItem::setItemAttribute	(	ItemAttribute	attribute,
		bool	on = `true`
	)		`[inherited]`

Toggle an item attribute

Parameters:

attribute	Attribute type
on	true/false

See also:: testItemAttribute(), ItemAttribute

void QwtPlotGrid::setMajPen ( const QPen & pen )

Assign a pen for the major gridlines

Parameters:

pen Pen

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

void QwtPlotGrid::setMinPen ( const QPen & pen )

Assign a pen for the minor gridlines

Parameters:

pen Pen

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

void QwtPlotGrid::setPen ( const QPen & pen )

Assign a pen for both major and minor gridlines

Parameters:

pen Pen

See also:: setMajPen(), setMinPen()

void QwtPlotItem::setRenderHint	(	RenderHint	hint,
		bool	on = `true`
	)		`[inherited]`

Toggle an render hint

Parameters:

hint	Render hint
on	true/false

See also:: testRenderHint(), RenderHint

void QwtPlotItem::setTitle ( const QString & title ) [inherited]

Set a new title

Parameters:

title Title

See also:: title()

void QwtPlotItem::setTitle ( const QwtText & title ) [inherited]

Set a new title

Parameters:

title Title

See also:: title()

void QwtPlotItem::setVisible ( bool on ) [virtual, inherited]

Show/Hide the item

Parameters:

on	Show if true, otherwise hide

See also:: isVisible(), show(), hide()

void QwtPlotItem::setXAxis ( int axis ) [inherited]

Set the X axis

The item will painted according to the coordinates its Axes.

Parameters:

axis X Axis

See also:: setAxes(), setYAxis(), xAxis()

void QwtPlotGrid::setXDiv ( const QwtScaleDiv & scaleDiv )

Assign an x axis scale division

Parameters:

scaleDiv Scale division

void QwtPlotItem::setYAxis ( int axis ) [inherited]

Set the Y axis

The item will painted according to the coordinates its Axes.

Parameters:

axis Y Axis

See also:: setAxes(), setXAxis(), yAxis()

void QwtPlotGrid::setYDiv ( const QwtScaleDiv & scaleDiv )

Assign a y axis division

Parameters:

scaleDiv Scale division

void QwtPlotItem::setZ ( double z ) [inherited]

Set the z value.

Plot items are painted in increasing z-order.

Parameters:

z Z-value

See also:: z(), QwtPlotDict::itemList()

void QwtPlotItem::show ( ) [inherited]

Show the item.

bool QwtPlotItem::testItemAttribute ( ItemAttribute attribute ) const [inherited]

Test an item attribute

Parameters:

attribute Attribute type

Returns:: true/false

See also:: setItemAttribute(), ItemAttribute

bool QwtPlotItem::testRenderHint ( RenderHint hint ) const [inherited]

Test a render hint

Parameters:

hint	Render hint

Returns:: true/false

See also:: setRenderHint(), RenderHint

const QwtText & QwtPlotItem::title ( ) const [inherited]

Returns:: Title of the item

See also:: setTitle()

void QwtPlotItem::updateLegend ( QwtLegend * legend ) const [virtual, inherited]

Update the widget that represents the item on the legend.

updateLegend() is called from itemChanged() to adopt the widget representing the item on the legend to its new configuration.

The default implementation updates a QwtLegendItem(), but an item could be represented by any type of widget, by overloading legendItem() and updateLegend().

Parameters:

legend Legend

See also:: legendItem(), itemChanged(), QwtLegend()

Implements QwtLegendItemManager.

Reimplemented in QwtPlotCurve, and QwtPlotMarker.

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.

int QwtPlotItem::xAxis ( ) const [inherited]

Return xAxis.

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

int QwtPlotItem::yAxis ( ) const [inherited]

Return yAxis.

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

double QwtPlotItem::z ( ) const [inherited]

Plot items are painted in increasing z-order.

Returns:: setZ(), QwtPlotDict::itemList()

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation