A 2-D plotting widget. Más...

#include <qwt_plot.h>

Diagrama de herencias de QwtPlot

Clases
class	AxisData
class	PrivateData
Tipos públicos
enum	Axis { yLeft, yRight, xBottom, xTop, axisCnt }
	Axis index. Más...
enum	LegendPosition { LeftLegend, RightLegend, BottomLegend, TopLegend, ExternalLegend }
	Position of the legend, relative to the canvas. Más...
Slots públicos
virtual void	clear ()
	Remove all curves and markers.
virtual void	replot ()
	Redraw the plot.
void	autoRefresh ()
	Replots the plot if QwtPlot::autoReplot() is `true`.
Señales
void	legendClicked (QwtPlotItem *plotItem)
void	legendChecked (QwtPlotItem *plotItem, bool on)
Métodos públicos
	QwtPlot (QWidget *=NULL)
	Constructor.
	QwtPlot (const QwtText &title, QWidget *p=NULL)
	Constructor.
	QwtPlot (QWidget , const char name)
	Constructor.
virtual	~QwtPlot ()
	Destructor.
void	applyProperties (const QString &)
QString	grabProperties () const
void	setAutoReplot (bool tf=true)
	Set or reset the autoReplot option.
bool	autoReplot () const
void	print (QPaintDevice &p, const QwtPlotPrintFilter &=QwtPlotPrintFilter()) const
	Print the plot to a `QPaintDevice` (`QPrinter`) This function prints the contents of a QwtPlot instance to `QPaintDevice` object. The size is derived from its device metrics.
virtual void	print (QPainter *, const QRect &rect, const QwtPlotPrintFilter &=QwtPlotPrintFilter()) const
	Paint the plot into a given rectangle. Paint the contents of a QwtPlot instance into a given rectangle.
QwtPlotLayout *	plotLayout ()
const QwtPlotLayout *	plotLayout () const
void	setMargin (int margin)
int	margin () const
void	setTitle (const QString &)
void	setTitle (const QwtText &t)
QwtText	title () const
QwtTextLabel *	titleLabel ()
const QwtTextLabel *	titleLabel () const
QwtPlotCanvas *	canvas ()
const QwtPlotCanvas *	canvas () const
void	setCanvasBackground (const QColor &c)
	Change the background of the plotting area.
const QColor &	canvasBackground () const
void	setCanvasLineWidth (int w)
	Change the border width of the plotting area Nothing else than canvas()->setLineWidth(w), left for compatibility only.
int	canvasLineWidth () const
virtual QwtScaleMap	canvasMap (int axisId) const
double	invTransform (int axisId, int pos) const
int	transform (int axisId, double value) const
	Transform a value into a coordinate in the plotting region.
QwtScaleEngine *	axisScaleEngine (int axisId)
const QwtScaleEngine *	axisScaleEngine (int axisId) const
void	setAxisScaleEngine (int axisId, QwtScaleEngine *)
void	setAxisAutoScale (int axisId)
	Enable autoscaling for a specified axis.
bool	axisAutoScale (int axisId) const
void	enableAxis (int axisId, bool tf=true)
	Enable or disable a specified axis.
bool	axisEnabled (int axisId) const
void	setAxisFont (int axisId, const QFont &f)
	Change the font of an axis.
QFont	axisFont (int axisId) const
void	setAxisScale (int axisId, double min, double max, double step=0)
	Disable autoscaling and specify a fixed scale for a selected axis.
void	setAxisScaleDiv (int axisId, const QwtScaleDiv &)
	Disable autoscaling and specify a fixed scale for a selected axis.
void	setAxisScaleDraw (int axisId, QwtScaleDraw *)
	Set a scale draw.
double	axisStepSize (int axisId) const
const QwtScaleDiv *	axisScaleDiv (int axisId) const
	Return the scale division of a specified axis.
QwtScaleDiv *	axisScaleDiv (int axisId)
	Return the scale division of a specified axis.
const QwtScaleDraw *	axisScaleDraw (int axisId) const
QwtScaleDraw *	axisScaleDraw (int axisId)
const QwtScaleWidget *	axisWidget (int axisId) const
QwtScaleWidget *	axisWidget (int axisId)
void	setAxisLabelAlignment (int axisId, int)
void	setAxisLabelRotation (int axisId, double rotation)
void	setAxisTitle (int axisId, const QString &)
	Change the title of a specified axis.
void	setAxisTitle (int axisId, const QwtText &)
	Change the title of a specified axis.
QwtText	axisTitle (int axisId) const
void	setAxisMaxMinor (int axisId, int maxMinor)
int	axisMaxMajor (int axisId) const
void	setAxisMaxMajor (int axisId, int maxMajor)
int	axisMaxMinor (int axisId) const
void	insertLegend (QwtLegend *, LegendPosition=QwtPlot::RightLegend, double ratio=-1.0)
	Insert a legend.
QwtLegend *	legend ()
const QwtLegend *	legend () const
virtual void	polish ()
	Polish.
virtual QSize	sizeHint () const
virtual QSize	minimumSizeHint () const
	Return a minimum size hint.
virtual void	updateLayout ()
	Adjust plot content to its current size.
virtual bool	event (QEvent *)
	Adds handling of layout requests.
Slots protegidos
virtual void	legendItemClicked ()
virtual void	legendItemChecked (bool)
Métodos protegidos
virtual void	drawCanvas (QPainter *)
virtual void	drawItems (QPainter *, const QRect &, const QwtScaleMap maps[axisCnt], const QwtPlotPrintFilter &) const
virtual void	updateTabOrder ()
void	updateAxes ()
	Rebuild the scales.
virtual void	resizeEvent (QResizeEvent *e)
	Resize and update internal layout.
virtual void	printLegendItem (QPainter , const QWidget , const QRect &) const
virtual void	printTitle (QPainter *, const QRect &) const
virtual void	printScale (QPainter *, int axisId, int startDist, int endDist, int baseDist, const QRect &) const
	Paint a scale into a given rectangle. Paint the scale into a given rectangle.
virtual void	printCanvas (QPainter *, const QRect &boundingRect, const QRect &canvasRect, const QwtScaleMap maps[axisCnt], const QwtPlotPrintFilter &) const
virtual void	printLegend (QPainter *, const QRect &) const
Métodos protegidos estáticos
static bool	axisValid (int axisId)
Propiedades
QString	propertiesDocument
Amigas
class	QwtPlotCanvas

Descripción detallada

A 2-D plotting widget.

QwtPlot is a widget for plotting two-dimensional graphs. An unlimited number of plot items can be displayed on its canvas. Plot items might be curves (QwtPlotCurve), markers (QwtPlotMarker), the grid (QwtPlotGrid), or anything else derived from QwtPlotItem. A plot can have up to four axes, with each plot item attached to an x- and a y axis. The scales at the axes can be explicitely set (QwtScaleDiv), or are calculated from the plot items, using algorithms (QwtScaleEngine) which can be configured separately for each axis.

Example

The following example shows (schematically) the most simple way to use QwtPlot. By default, only the left and bottom axes are visible and their scales are computed automatically.

#include <qwt_plot.h>
#include <qwt_plot_curve.h>

QwtPlot *myPlot;
double x[100], y1[100], y2[100];        // x and y values

myPlot = new QwtPlot("Two Curves", parent);

// add curves
QwtPlotCurve *curve1 = new QwtPlotCurve("Curve 1");
QwtPlotCurve *curve2 = new QwtPlotCurve("Curve 2");

getSomeValues(x, y1, y2);

// copy the data into the curves
curve1->setData(x, y1, 100);
curve2->setData(x, y2, 100);

curve1->attach(myPlot);
curve2->attach(myPlot);

// finally, refresh the plot
myPlot->replot();

Documentación de las enumeraciones miembro de la clase

enum QwtPlot::Axis

Axis index.

Valores de enumeraciones:

yLeft
yRight
xBottom
xTop
axisCnt

enum QwtPlot::LegendPosition

Position of the legend, relative to the canvas.

ExternalLegend means that only the content of the legend will be handled by QwtPlot, but not its geometry. This might be interesting if an application wants to have a legend in an external window.

Valores de enumeraciones:

LeftLegend
RightLegend
BottomLegend
TopLegend
ExternalLegend

Documentación del constructor y destructor

QwtPlot::QwtPlot ( QWidget * parent = NULL ) [explicit]

Constructor.

Parámetros:

parent Parent widget

QwtPlot::QwtPlot	(	const QwtText &	title,
		QWidget *	parent = `NULL`
	)		`[explicit]`

Constructor.

Parámetros:

title	Title text
parent	Parent widget

QwtPlot::QwtPlot	(	QWidget *	parent,
		const char *	name
	)		`[explicit]`

Constructor.

Parámetros:

parent	Parent widget
name	Object name

QwtPlot::~QwtPlot ( ) [virtual]

Destructor.

Documentación de las funciones miembro

void QwtPlot::applyProperties ( const QString & xmlDocument )

void QwtPlot::autoRefresh ( ) [slot]

Replots the plot if QwtPlot::autoReplot() is true.

bool QwtPlot::autoReplot ( ) const

Devuelve:: true if the autoReplot option is set.

bool QwtPlot::axisAutoScale ( int axisId ) const

Devuelve:: true if autoscaling is enabled

Parámetros:

axisId axis index

bool QwtPlot::axisEnabled ( int axisId ) const

Devuelve:: true if a specified axis is enabled

Parámetros:

axisId axis index

QFont QwtPlot::axisFont ( int axisId ) const

Devuelve:: the font of the scale labels for a specified axis

Parámetros:

axisId axis index

int QwtPlot::axisMaxMajor ( int axisId ) const

Devuelve:: the maximum number of major ticks for a specified axis

Parámetros:

axisId axis index sa setAxisMaxMajor()

int QwtPlot::axisMaxMinor ( int axisId ) const

Devuelve:: the maximum number of minor ticks for a specified axis

Parámetros:

axisId axis index sa setAxisMaxMinor()

const QwtScaleDiv * QwtPlot::axisScaleDiv ( int axisId ) const

Return the scale division of a specified axis.

axisScaleDiv(axisId)->lBound(), axisScaleDiv(axisId)->hBound() are the current limits of the axis scale.

Parámetros:

axisId axis index

Devuelve:: Scale division

Ver también:: QwtScaleDiv, setAxisScaleDiv

QwtScaleDiv * QwtPlot::axisScaleDiv ( int axisId )

Return the scale division of a specified axis.

axisScaleDiv(axisId)->lBound(), axisScaleDiv(axisId)->hBound() are the current limits of the axis scale.

Parámetros:

axisId axis index

Devuelve:: Scale division

Ver también:: QwtScaleDiv, setAxisScaleDiv

const QwtScaleDraw * QwtPlot::axisScaleDraw ( int axisId ) const

Devuelve:: the scale draw of a specified axis

Parámetros:

axisId axis index

Devuelve:: specified scaleDraw for axis, or NULL if axis is invalid.

Ver también:: QwtScaleDraw

QwtScaleDraw * QwtPlot::axisScaleDraw ( int axisId )

Devuelve:: the scale draw of a specified axis

Parámetros:

axisId axis index

Devuelve:: specified scaleDraw for axis, or NULL if axis is invalid.

Ver también:: QwtScaleDraw

const QwtScaleEngine * QwtPlot::axisScaleEngine ( int axisId ) const

Devuelve:: Scale engine for a specific axis

QwtScaleEngine * QwtPlot::axisScaleEngine ( int axisId )

Devuelve:: Scale engine for a specific axis

double QwtPlot::axisStepSize ( int axisId ) const

Return the step size parameter, that has been set in setAxisScale. This doesn't need to be the step size of the current scale.

Parámetros:

axisId axis index

Devuelve:: step size parameter value

Ver también:: setAxisScale

QwtText QwtPlot::axisTitle ( int axisId ) const

Devuelve:: the title of a specified axis

Parámetros:

axisId axis index

bool QwtPlot::axisValid ( int axisId ) [static, protected]

Devuelve:: true if the specified axis exists, otherwise false

Parámetros:

axisId axis index

const QwtScaleWidget * QwtPlot::axisWidget ( int axisId ) const

Devuelve:: specified axis, or NULL if axisId is invalid.

Parámetros:

axisId axis index

QwtScaleWidget * QwtPlot::axisWidget ( int axisId )

Devuelve:: specified axis, or NULL if axisId is invalid.

Parámetros:

axisId axis index

QwtPlotCanvas * QwtPlot::canvas ( )

Devuelve:: the plot's canvas

const QwtPlotCanvas * QwtPlot::canvas ( ) const

Devuelve:: the plot's canvas

const QColor & QwtPlot::canvasBackground ( ) const

Nothing else than: canvas()->palette().color( QPalette::Normal, QColorGroup::Background);

Devuelve:: the background color of the plotting area.

int QwtPlot::canvasLineWidth ( ) const

Nothing else than: canvas()->lineWidth(), left for compatibility only.

Devuelve:: the border width of the plotting area

QwtScaleMap QwtPlot::canvasMap ( int axisId ) const [virtual]

Parámetros:

axisId Axis

Devuelve:: Map for the axis on the canvas. With this map pixel coordinates can translated to plot coordinates and vice versa.

Ver también:: QwtScaleMap, transform(), invTransform()

void QwtPlot::clear ( void ) [virtual, slot]

Remove all curves and markers.

void QwtPlot::drawCanvas ( QPainter * painter ) [protected, virtual]

Redraw the canvas.

Parámetros:

painter Painter used for drawing

Atención:: drawCanvas calls drawItems what is also used for printing. Applications that like to add individual plot items better overload drawItems()

Ver también:: drawItems()

void QwtPlot::drawItems	(	QPainter *	painter,
		const QRect &	rect,
		const QwtScaleMap	map[axisCnt],
		const QwtPlotPrintFilter &	pfilter
	)		const `[protected, virtual]`

Redraw the canvas items.

Parámetros:

painter	Painter used for drawing
rect	Bounding rectangle where to paint
map	QwtPlot::axisCnt maps, mapping between plot and paint device coordinates
pfilter	Plot print filter

void QwtPlot::enableAxis	(	int	axisId,
		bool	tf = `true`
	)

Enable or disable a specified axis.

When an axis is disabled, this only means that it is not visible on the screen. Curves, markers and can be attached to disabled axes, and transformation of screen coordinates into values works as normal.

Only xBottom and yLeft are enabled by default.

Parámetros:

axisId	axis index
tf	`true` (enabled) or `false` (disabled)

bool QwtPlot::event ( QEvent * e ) [virtual]

Adds handling of layout requests.

Reimplementado de QWidget.

QString QwtPlot::grabProperties ( ) const

void QwtPlot::insertLegend	(	QwtLegend *	legend,
		QwtPlot::LegendPosition	pos = `QwtPlot::RightLegend`,
		double	ratio = `-1.0`
	)

Insert a legend.

If the position legend is QwtPlot::LeftLegend or QwtPlot::RightLegend the legend will be organized in one column from top to down. Otherwise the legend items will be placed in a table with a best fit number of columns from left to right.

If pos != QwtPlot::ExternalLegend the plot widget will become parent of the legend. It will be deleted when the plot is deleted, or another legend is set with insertLegend().

Parámetros:

legend	Legend
pos	The legend's position. For top/left position the number of colums will be limited to 1, otherwise it will be set to unlimited.
ratio	Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.

Ver también:: legend(), QwtPlotLayout::legendPosition(), QwtPlotLayout::setLegendPosition()

double QwtPlot::invTransform	(	int	axisId,
		int	pos
	)		const

Transform the x or y coordinate of a position in the drawing region into a value.

Parámetros:

axisId	axis index
pos	position

Atención:: The position can be an x or a y coordinate, depending on the specified axis.

QwtLegend * QwtPlot::legend ( )

Devuelve:: the plot's legend

Ver también:: insertLegend()

const QwtLegend * QwtPlot::legend ( ) const

Devuelve:: the plot's legend

Ver también:: insertLegend()

void QwtPlot::legendChecked	(	QwtPlotItem *	plotItem,
		bool	on
	)		`[signal]`

A signal which is emitted when the user has clicked on a legend item, which is in QwtLegend::CheckableItem mode

Parámetros:

plotItem	Corresponding plot item of the selected legend item
on	True when the legen item is checked

Nota:: clicks are disabled as default

Ver también:: QwtLegend::setItemMode, QwtLegend::itemMode

void QwtPlot::legendClicked ( QwtPlotItem * plotItem ) [signal]

A signal which is emitted when the user has clicked on a legend item, which is in QwtLegend::ClickableItem mode.

Parámetros:

plotItem Corresponding plot item of the selected legend item

Nota:: clicks are disabled as default

Ver también:: QwtLegend::setItemMode, QwtLegend::itemMode

void QwtPlot::legendItemChecked ( bool on ) [protected, virtual, slot]

Called internally when the legend has been checked Emits a legendClicked() signal.

void QwtPlot::legendItemClicked ( ) [protected, virtual, slot]

Called internally when the legend has been clicked on. Emits a legendClicked() signal.

int QwtPlot::margin ( ) const

Devuelve:: margin

Ver también:: setMargin(), QwtPlotLayout::margin(), plotLayout()

Reimplementado de QFrame.

QSize QwtPlot::minimumSizeHint ( ) const [virtual]

Return a minimum size hint.

Reimplementado de QWidget.

QwtPlotLayout * QwtPlot::plotLayout ( )

Devuelve:: the plot's title

const QwtPlotLayout * QwtPlot::plotLayout ( ) const

Devuelve:: the plot's titel label.

void QwtPlot::polish ( ) [virtual]

Polish.

Reimplementado de QWidget.

void QwtPlot::print	(	QPaintDevice &	paintDev,
		const QwtPlotPrintFilter &	pfilter = `QwtPlotPrintFilter()`
	)		const

Print the plot to a QPaintDevice (QPrinter) This function prints the contents of a QwtPlot instance to QPaintDevice object. The size is derived from its device metrics.

Parámetros:

paintDev	device to paint on, often a printer
pfilter	print filter

Ver también:: QwtPlot::print; QwtPlotPrintFilter

void QwtPlot::print	(	QPainter *	painter,
		const QRect &	plotRect,
		const QwtPlotPrintFilter &	pfilter = `QwtPlotPrintFilter()`
	)		const `[virtual]`

Paint the plot into a given rectangle. Paint the contents of a QwtPlot instance into a given rectangle.

Parámetros:

painter	Painter
plotRect	Bounding rectangle
pfilter	Print filter

Ver también:: QwtPlotPrintFilter

void QwtPlot::printCanvas	(	QPainter *	painter,
		const QRect &	boundingRect,
		const QRect &	canvasRect,
		const QwtScaleMap	map[axisCnt],
		const QwtPlotPrintFilter &	pfilter
	)		const `[protected, virtual]`

Print the canvas into a given rectangle.

Parámetros:

painter	Painter
map	Maps mapping between plot and paint device coordinates
boundingRect	Bounding rectangle
canvasRect	Canvas rectangle
pfilter	Print filter

Ver también:: QwtPlotPrintFilter

void QwtPlot::printLegend	(	QPainter *	painter,
		const QRect &	rect
	)		const `[protected, virtual]`

Print the legend into a given rectangle.

Parámetros:

painter	Painter
rect	Bounding rectangle

void QwtPlot::printLegendItem	(	QPainter *	painter,
		const QWidget *	w,
		const QRect &	rect
	)		const `[protected, virtual]`

Print the legend item into a given rectangle.

Parámetros:

painter	Painter
w	Widget representing a legend item
rect	Bounding rectangle

void QwtPlot::printScale	(	QPainter *	painter,
		int	axisId,
		int	startDist,
		int	endDist,
		int	baseDist,
		const QRect &	rect
	)		const `[protected, virtual]`

Paint a scale into a given rectangle. Paint the scale into a given rectangle.

Parámetros:

painter	Painter
axisId	Axis
startDist	Start border distance
endDist	End border distance
baseDist	Base distance
rect	Bounding rectangle

void QwtPlot::printTitle	(	QPainter *	painter,
		const QRect &	rect
	)		const `[protected, virtual]`

Print the title into a given rectangle.

Parámetros:

painter	Painter
rect	Bounding rectangle

void QwtPlot::replot ( ) [virtual, slot]

Redraw the plot.

If the autoReplot option is not set (which is the default) or if any curves are attached to raw data, the plot has to be refreshed explicitly in order to make changes visible.

Ver también:: setAutoReplot()

Atención:: Calls canvas()->repaint, take care of infinite recursions

void QwtPlot::resizeEvent ( QResizeEvent * e ) [protected, virtual]

Resize and update internal layout.

Reimplementado de QFrame.

void QwtPlot::setAutoReplot ( bool tf = true )

Set or reset the autoReplot option.

If the autoReplot option is set, the plot will be updated implicitly by manipulating member functions. Since this may be time-consuming, it is recommended to leave this option switched off and call replot() explicitly if necessary.

The autoReplot option is set to false by default, which means that the user has to call replot() in order to make changes visible.

Parámetros:

tf	`true` or `false`. Defaults to `true`.

Ver también:: replot()

void QwtPlot::setAxisAutoScale ( int axisId )

Enable autoscaling for a specified axis.

This member function is used to switch back to autoscaling mode after a fixed scale has been set. Autoscaling is enabled by default.

Parámetros:

axisId axis index

Ver también:: QwtPlot::setAxisScale(), QwtPlot::setAxisScaleDiv()

void QwtPlot::setAxisFont	(	int	axisId,
		const QFont &	f
	)

Change the font of an axis.

Parámetros:

axisId	axis index
f	font

Atención:: This function changes the font of the tick labels, not of the axis title.

void QwtPlot::setAxisLabelAlignment	(	int	axisId,
		int	alignment
	)

Change the alignment of the tick labels

Parámetros:

axisId	axis index
alignment	Or'd Qt::AlignmentFlags <see qnamespace.h>

Ver también:: QwtScaleDraw::setLabelAlignment()

void QwtPlot::setAxisLabelRotation	(	int	axisId,
		double	rotation
	)

Rotate all tick labels

Parámetros:

axisId	axis index
rotation	Angle in degrees. When changing the label rotation, the label alignment might be adjusted too.

Ver también:: QwtScaleDraw::setLabelRotation(), QwtPlot::setAxisLabelAlignment

void QwtPlot::setAxisMaxMajor	(	int	axisId,
		int	maxMajor
	)

Set the maximum number of major scale intervals for a specified axis

Parámetros:

axisId	axis index
maxMajor	maximum number of major steps

Ver también:: axisMaxMajor()

void QwtPlot::setAxisMaxMinor	(	int	axisId,
		int	maxMinor
	)

Set the maximum number of minor scale intervals for a specified axis

Parámetros:

axisId	axis index
maxMinor	maximum number of minor steps

Ver también:: axisMaxMinor()

void QwtPlot::setAxisScale	(	int	axisId,
		double	min,
		double	max,
		double	stepSize = `0`
	)

Disable autoscaling and specify a fixed scale for a selected axis.

Parámetros:

axisId	axis index
min
max	minimum and maximum of the scale
stepSize	Major step size. If `step == 0`, the step size is calculated automatically using the maxMajor setting.

Ver también:: setAxisMaxMajor(), setAxisAutoScale()

void QwtPlot::setAxisScaleDiv	(	int	axisId,
		const QwtScaleDiv &	scaleDiv
	)

Disable autoscaling and specify a fixed scale for a selected axis.

Parámetros:

axisId	axis index
scaleDiv	Scale division

Ver también:: setAxisScale(), setAxisAutoScale()

void QwtPlot::setAxisScaleDraw	(	int	axisId,
		QwtScaleDraw *	scaleDraw
	)

Set a scale draw.

Parámetros:

axisId	axis index
scaleDraw	object responsible for drawing scales.

By passing scaleDraw it is possible to extend QwtScaleDraw functionality and let it take place in QwtPlot. Please note that scaleDraw has to be created with new and will be deleted by the corresponding QwtScale member ( like a child object ).

Ver también:: QwtScaleDraw, QwtScaleWidget

Atención:: The attributes of scaleDraw will be overwritten by those of the previous QwtScaleDraw.

void QwtPlot::setAxisScaleEngine	(	int	axisId,
		QwtScaleEngine *	scaleEngine
	)

Change the scale engine for an axis

Parámetros:

axisId	axis index
scaleEngine	Scale engine

Ver también:: axisScaleEngine()

void QwtPlot::setAxisTitle	(	int	axisId,
		const QString &	title
	)

Change the title of a specified axis.

Parámetros:

axisId	axis index
title	axis title

void QwtPlot::setAxisTitle	(	int	axisId,
		const QwtText &	title
	)

Change the title of a specified axis.

Parámetros:

axisId	axis index
title	axis title

void QwtPlot::setCanvasBackground ( const QColor & c )

Change the background of the plotting area.

Sets c to QColorGroup::Background of all colorgroups of the palette of the canvas. Using canvas()->setPalette() is a more powerful way to set these colors.

Parámetros:

c	new background color

void QwtPlot::setCanvasLineWidth ( int w )

Change the border width of the plotting area Nothing else than canvas()->setLineWidth(w), left for compatibility only.

Parámetros:

w	new border width

void QwtPlot::setMargin ( int margin ) [virtual]

Change the margin of the plot. The margin is the space around all components.

Parámetros:

margin new margin

Ver también:: QwtPlotLayout::setMargin(), margin(), plotLayout()

Reimplementado de QFrame.

void QwtPlot::setTitle ( const QwtText & title )

Change the plot's title

Parámetros:

title New title

void QwtPlot::setTitle ( const QString & title )

Change the plot's title

Parámetros:

title New title

QSize QwtPlot::sizeHint ( ) const [virtual]

Return sizeHint

Ver también:: minimumSizeHint()

Reimplementado de QFrame.

QwtText QwtPlot::title ( ) const

Devuelve:: the plot's title

QwtTextLabel * QwtPlot::titleLabel ( )

Devuelve:: the plot's titel label.

const QwtTextLabel * QwtPlot::titleLabel ( ) const

Devuelve:: the plot's titel label.

int QwtPlot::transform	(	int	axisId,
		double	value
	)		const

Transform a value into a coordinate in the plotting region.

Parámetros:

axisId	axis index
value	value

Devuelve:: X or y coordinate in the plotting region corresponding to the value.

void QwtPlot::updateAxes ( ) [protected]

Rebuild the scales.

void QwtPlot::updateLayout ( ) [virtual]

Adjust plot content to its current size.

Ver también:: resizeEvent()

void QwtPlot::updateTabOrder ( ) [protected, virtual]

Update the focus tab order

The order is changed so that the canvas will be in front of the first legend item, or behind the last legend item - depending on the position of the legend.

Documentación de las funciones relacionadas y clases amigas

friend class QwtPlotCanvas [friend]

Documentación de propiedades

QString QwtPlot::propertiesDocument [read, write]

La documentación para esta clase fue generada a partir de los siguientes ficheros:

src/qwt/src/qwt_plot.h
src/qwt/src/qwt_plot.cpp
src/qwt/src/qwt_plot_axis.cpp
src/qwt/src/qwt_plot_print.cpp
src/qwt/src/qwt_plot_xml.cpp

Clases

Tipos públicos

Slots públicos

Señales

Métodos públicos

Slots protegidos

Métodos protegidos

Métodos protegidos estáticos

Propiedades

Amigas

Descripción detallada

Documentación de las enumeraciones miembro de la clase

Documentación del constructor y destructor

Documentación de las funciones miembro

Documentación de las funciones relacionadas y clases amigas

Documentación de propiedades