QCPSelectionDecorator Class Reference

Inheritance diagram for QCPSelectionDecorator:

Public Member Functions
	QCPSelectionDecorator ()
void	applyBrush (QCPPainter *painter) const
void	applyPen (QCPPainter *painter) const
QBrush	brush () const
virtual void	copyFrom (const QCPSelectionDecorator *other)
virtual void	drawDecoration (QCPPainter *painter, QCPDataSelection selection)
QCPScatterStyle	getFinalScatterStyle (const QCPScatterStyle &unselectedStyle) const
QPen	pen () const
QCPScatterStyle	scatterStyle () const
void	setBrush (const QBrush &brush)
void	setPen (const QPen &pen)
void	setScatterStyle (const QCPScatterStyle &scatterStyle, QCPScatterStyle::ScatterProperties usedProperties=QCPScatterStyle::spPen)
void	setUsedScatterProperties (const QCPScatterStyle::ScatterProperties &properties)
QCPScatterStyle::ScatterProperties	usedScatterProperties () const

Protected Member Functions
virtual bool	registerWithPlottable (QCPAbstractPlottable *plottable)

Protected Attributes
QBrush	mBrush
QPen	mPen
QCPAbstractPlottable *	mPlottable
QCPScatterStyle	mScatterStyle
QCPScatterStyle::ScatterProperties	mUsedScatterProperties

Detailed Description

Controls how a plottable's data selection is drawn.

Each QCPAbstractPlottable instance has one QCPSelectionDecorator (accessible via QCPAbstractPlottable::selectionDecorator) and uses it when drawing selected segments of its data.

The selection decorator controls both pen (setPen) and brush (setBrush), as well as the scatter style (setScatterStyle) if the plottable draws scatters. Since a QCPScatterStyle is itself composed of different properties such as color shape and size, the decorator allows specifying exactly which of those properties shall be used for the selected data point, via setUsedScatterProperties.

A QCPSelectionDecorator subclass instance can be passed to a plottable via QCPAbstractPlottable::setSelectionDecorator, allowing greater customizability of the appearance of selected segments.

Use copyFrom to easily transfer the settings of one decorator to another one. This is especially useful since plottables take ownership of the passed selection decorator, and thus the same decorator instance can not be passed to multiple plottables.

Selection decorators can also themselves perform drawing operations by reimplementing drawDecoration, which is called by the plottable's draw method. The base class QCPSelectionDecorator does not make use of this however. For example, QCPSelectionDecoratorBracket draws brackets around selected data segments.

Definition at line 3389 of file qcustomplot.h.

Constructor & Destructor Documentation

QCPSelectionDecorator()

QCPSelectionDecorator::QCPSelectionDecorator

(

)

Creates a new QCPSelectionDecorator instance with default values

Definition at line 11044 of file qcustomplot.cpp.

~QCPSelectionDecorator()

QCPSelectionDecorator::~QCPSelectionDecorator ( )

virtual

Definition at line 11052 of file qcustomplot.cpp.

Member Function Documentation

applyBrush()

void QCPSelectionDecorator::applyBrush

(

QCPPainter *

painter

)

const

Sets the brush of painter to the brush of this selection decorator.

See also

applyPen, getFinalScatterStyle

Definition at line 11112 of file qcustomplot.cpp.

applyPen()

void QCPSelectionDecorator::applyPen

(

QCPPainter *

painter

)

const

Sets the pen of painter to the pen of this selection decorator.

See also

applyBrush, getFinalScatterStyle

Definition at line 11102 of file qcustomplot.cpp.

brush()

QBrush QCPSelectionDecorator::brush ( ) const

inline

Definition at line 3398 of file qcustomplot.h.

copyFrom()

void QCPSelectionDecorator::copyFrom ( const QCPSelectionDecorator * other )

virtual

Copies all properties (e.g. color, fill, scatter style) of the other selection decorator to this selection decorator.

Definition at line 11143 of file qcustomplot.cpp.

drawDecoration()

void QCPSelectionDecorator::drawDecoration ( QCPPainter * painter, QCPDataSelection selection )

virtual

This method is called by all plottables' draw methods to allow custom selection decorations to be drawn. Use the passed painter to perform the drawing operations. selection carries the data selection for which the decoration shall be drawn.

The default base class implementation of QCPSelectionDecorator has no special decoration, so this method does nothing.

Reimplemented in QCPSelectionDecoratorBracket.

Definition at line 11158 of file qcustomplot.cpp.

getFinalScatterStyle()

QCPScatterStyle QCPSelectionDecorator::getFinalScatterStyle

(

const QCPScatterStyle &

unselectedStyle

)

const

Returns the scatter style that the parent plottable shall use for selected scatter points. The plottable's original (unselected) scatter style must be passed as unselectedStyle. Depending on the setting of setUsedScatterProperties, the returned scatter style is a mixture of this selecion decorator's scatter style (setScatterStyle), and unselectedStyle.

See also

applyPen, applyBrush, setScatterStyle

Definition at line 11125 of file qcustomplot.cpp.

pen()

QPen QCPSelectionDecorator::pen ( ) const

inline

Definition at line 3397 of file qcustomplot.h.

registerWithPlottable()

bool QCPSelectionDecorator::registerWithPlottable ( QCPAbstractPlottable * plottable )

protectedvirtual

This method is called as soon as a selection decorator is associated with a plottable, by a call to QCPAbstractPlottable::setSelectionDecorator. This way the selection decorator can obtain a pointer to the plottable that uses it (e.g. to access data points via the QCPAbstractPlottable::interface1D interface).

If the selection decorator was already added to a different plottable before, this method aborts the registration and returns false.

Definition at line 11173 of file qcustomplot.cpp.

scatterStyle()

QCPScatterStyle QCPSelectionDecorator::scatterStyle ( ) const

inline

Definition at line 3399 of file qcustomplot.h.

setBrush()

void QCPSelectionDecorator::setBrush

(

const QBrush &

brush

)

Sets the brush that will be used by the parent plottable to draw selected data segments.

Definition at line 11067 of file qcustomplot.cpp.

setPen()

void QCPSelectionDecorator::setPen

(

const QPen &

pen

)

Sets the pen that will be used by the parent plottable to draw selected data segments.

Definition at line 11059 of file qcustomplot.cpp.

setScatterStyle()

void QCPSelectionDecorator::setScatterStyle	(	const QCPScatterStyle &	scatterStyle,
		QCPScatterStyle::ScatterProperties	usedProperties = QCPScatterStyle::spPen )

Sets the scatter style that will be used by the parent plottable to draw scatters in selected data segments.

usedProperties specifies which parts of the passed scatterStyle will be used by the plottable. The used properties can also be changed via setUsedScatterProperties.

Definition at line 11079 of file qcustomplot.cpp.

setUsedScatterProperties()

void QCPSelectionDecorator::setUsedScatterProperties

(

const QCPScatterStyle::ScatterProperties &

properties

)

Use this method to define which properties of the scatter style (set via setScatterStyle) will be used for selected data segments. All properties of the scatter style that are not specified in properties will remain as specified in the plottable's original scatter style.

See also

QCPScatterStyle::ScatterProperty

Definition at line 11092 of file qcustomplot.cpp.

usedScatterProperties()

QCPScatterStyle::ScatterProperties QCPSelectionDecorator::usedScatterProperties ( ) const

inline

Definition at line 3400 of file qcustomplot.h.

Member Data Documentation

mBrush

QBrush QCPSelectionDecorator::mBrush

protected

Definition at line 3420 of file qcustomplot.h.

mPen

QPen QCPSelectionDecorator::mPen

protected

Definition at line 3419 of file qcustomplot.h.

mPlottable

QCPAbstractPlottable* QCPSelectionDecorator::mPlottable

protected

Definition at line 3424 of file qcustomplot.h.

mScatterStyle

QCPScatterStyle QCPSelectionDecorator::mScatterStyle

protected

Definition at line 3421 of file qcustomplot.h.

mUsedScatterProperties

QCPScatterStyle::ScatterProperties QCPSelectionDecorator::mUsedScatterProperties

protected

Definition at line 3422 of file qcustomplot.h.

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

• qcustomplot.h
• qcustomplot.cpp