A class which draws a coordinate grid. More...

#include <qwt_plot_grid.h>

Inheritance diagram for QwtPlotGrid:

Classes
class	PrivateData
Public Member Functions
virtual void	draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &rect) const
	Draw the grid.
void	enableX (bool tf)
	Enable or disable vertical grid lines.
void	enableXMin (bool tf)
	Enable or disable minor vertical grid lines.
void	enableY (bool tf)
	Enable or disable horizontal grid lines.
void	enableYMin (bool tf)
	Enable or disable minor horizontal grid lines.
const QPen &	majorPen () const
const QPen &	minorPen () const
	QwtPlotGrid ()
	Enables major grid, disables minor grid.
virtual int	rtti () const
void	setMajorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
void	setMajorPen (const QPen &)
void	setMinorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
void	setMinorPen (const QPen &p)
void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
void	setPen (const QPen &)
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
virtual	~QwtPlotGrid ()
	Destructor.
Private Member Functions
void	drawLines (QPainter *painter, const QRectF &, Qt::Orientation orientation, const QwtScaleMap &, const QList< double > &) const
Private Attributes
PrivateData *	d_data

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 grid lines. The locations of the grid lines 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.

Definition at line 34 of file qwt_plot_grid.h.

Constructor & Destructor Documentation

QwtPlotGrid::QwtPlotGrid ( ) [explicit]

Enables major grid, disables minor grid.

Definition at line 48 of file qwt_plot_grid.cpp.

QwtPlotGrid::~QwtPlotGrid ( ) [virtual]

Destructor.

Definition at line 58 of file qwt_plot_grid.cpp.

Member Function Documentation

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 grid lines 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 rectangle of the plot canvas

Implements QwtPlotItem.

Definition at line 282 of file qwt_plot_grid.cpp.

void QwtPlotGrid::drawLines	(	QPainter *	painter,
		const QRectF &	canvasRect,
		Qt::Orientation	orientation,
		const QwtScaleMap &	scaleMap,
		const QList< double > &	values
	)		const `[private]`

Definition at line 327 of file qwt_plot_grid.cpp.

void QwtPlotGrid::enableX ( bool on )

Enable or disable vertical grid lines.

Parameters:

on	Enable (true) or disable

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

Definition at line 76 of file qwt_plot_grid.cpp.

void QwtPlotGrid::enableXMin ( bool on )

Enable or disable minor vertical grid lines.

Parameters:

on	Enable (true) or disable

See also:: enableX()

Definition at line 108 of file qwt_plot_grid.cpp.

void QwtPlotGrid::enableY ( bool on )

Enable or disable horizontal grid lines.

Parameters:

on	Enable (true) or disable

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

Definition at line 92 of file qwt_plot_grid.cpp.

void QwtPlotGrid::enableYMin ( bool on )

Enable or disable minor horizontal grid lines.

Parameters:

on	Enable (true) or disable

See also:: enableY()

Definition at line 124 of file qwt_plot_grid.cpp.

const QPen & QwtPlotGrid::majorPen ( ) const

Returns:: the pen for the major grid lines

See also:: setMajorPen(), setMinorPen(), setPen()

Definition at line 367 of file qwt_plot_grid.cpp.

const QPen & QwtPlotGrid::minorPen ( ) const

Returns:: the pen for the minor grid lines

See also:: setMinorPen(), setMajorPen(), setPen()

Definition at line 376 of file qwt_plot_grid.cpp.

int QwtPlotGrid::rtti ( ) const [virtual]

Returns:: QwtPlotItem::Rtti_PlotGrid

Reimplemented from QwtPlotItem.

Definition at line 64 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setMajorPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for both major grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters:

color	Pen color
width	Pen width
style	Pen style

See also:: pen(), brush()

Definition at line 212 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setMajorPen ( const QPen & pen )

Assign a pen for the major grid lines

Parameters:

pen Pen

See also:: majorPen(), setMinorPen(), setPen()

Definition at line 223 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setMinorPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for the minor grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters:

color	Pen color
width	Pen width
style	Pen style

See also:: pen(), brush()

Definition at line 247 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setMinorPen ( const QPen & pen )

Assign a pen for the minor grid lines

Parameters:

pen Pen

See also:: minorPen(), setMajorPen(), setPen()

Definition at line 258 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for both major and minor grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters:

color	Pen color
width	Pen width
style	Pen style

See also:: pen(), brush()

Definition at line 176 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setPen ( const QPen & pen )

Assign a pen for both major and minor grid lines

Parameters:

pen Pen

See also:: setMajorPen(), setMinorPen()

Definition at line 187 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setXDiv ( const QwtScaleDiv & scaleDiv )

Assign an x axis scale division

Parameters:

scaleDiv Scale division

Definition at line 140 of file qwt_plot_grid.cpp.

void QwtPlotGrid::setYDiv ( const QwtScaleDiv & scaleDiv )

Assign a y axis division

Parameters:

scaleDiv Scale division

Definition at line 154 of file qwt_plot_grid.cpp.

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.

Definition at line 438 of file qwt_plot_grid.cpp.

bool QwtPlotGrid::xEnabled ( ) const

Returns:: true if vertical grid lines are enabled

See also:: enableX()

Definition at line 385 of file qwt_plot_grid.cpp.

bool QwtPlotGrid::xMinEnabled ( ) const

Returns:: true if minor vertical grid lines are enabled

See also:: enableXMin()

Definition at line 394 of file qwt_plot_grid.cpp.

const QwtScaleDiv & QwtPlotGrid::xScaleDiv ( ) const

Returns:: the scale division of the x axis

Definition at line 419 of file qwt_plot_grid.cpp.

bool QwtPlotGrid::yEnabled ( ) const

Returns:: true if horizontal grid lines are enabled

See also:: enableY()

Definition at line 403 of file qwt_plot_grid.cpp.

bool QwtPlotGrid::yMinEnabled ( ) const

Returns:: true if minor horizontal grid lines are enabled

See also:: enableYMin()

Definition at line 412 of file qwt_plot_grid.cpp.

const QwtScaleDiv & QwtPlotGrid::yScaleDiv ( ) const

Returns:: the scale division of the y axis

Definition at line 425 of file qwt_plot_grid.cpp.

Member Data Documentation

PrivateData* QwtPlotGrid::d_data [private]

Reimplemented from QwtPlotItem.

Definition at line 83 of file qwt_plot_grid.h.

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

Classes

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation