A selection decorator which draws brackets around each selected data segment. More...

Inheritance diagram for QCPSelectionDecoratorBracket:

Public Types
enum	BracketStyle { bsSquareBracket , bsHalfEllipse , bsEllipse , bsPlus , bsUserStyle }

Public Member Functions
	QCPSelectionDecoratorBracket ()

QPen	bracketPen () const

QBrush	bracketBrush () const

int	bracketWidth () const

int	bracketHeight () const

BracketStyle	bracketStyle () const

bool	tangentToData () const

int	tangentAverage () const

void	setBracketPen (const QPen &pen)

void	setBracketBrush (const QBrush &brush)

void	setBracketWidth (int width)

void	setBracketHeight (int height)

void	setBracketStyle (BracketStyle style)

void	setTangentToData (bool enabled)

void	setTangentAverage (int pointCount)

virtual void	drawBracket (QCPPainter *painter, int direction) const

virtual void	drawDecoration (QCPPainter *painter, QCPDataSelection selection) Q_DECL_OVERRIDE

Public Member Functions inherited from QCPSelectionDecorator
	QCPSelectionDecorator ()

QPen	pen () const

QBrush	brush () const

QCPScatterStyle	scatterStyle () const

QCPScatterStyle::ScatterProperties	usedScatterProperties () const

void	setPen (const QPen &pen)

void	setBrush (const QBrush &brush)

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

void	setUsedScatterProperties (const QCPScatterStyle::ScatterProperties &properties)

void	applyPen (QCPPainter *painter) const

void	applyBrush (QCPPainter *painter) const

QCPScatterStyle	getFinalScatterStyle (const QCPScatterStyle &unselectedStyle) const

virtual void	copyFrom (const QCPSelectionDecorator *other)

Protected Member Functions
double	getTangentAngle (const QCPPlottableInterface1D *interface1d, int dataIndex, int direction) const

QPointF	getPixelCoordinates (const QCPPlottableInterface1D *interface1d, int dataIndex) const

Protected Member Functions inherited from QCPSelectionDecorator
virtual bool	registerWithPlottable (QCPAbstractPlottable *plottable)

Protected Attributes
QPen	mBracketPen

QBrush	mBracketBrush

int	mBracketWidth

int	mBracketHeight

BracketStyle	mBracketStyle

bool	mTangentToData

int	mTangentAverage

Protected Attributes inherited from QCPSelectionDecorator
QPen	mPen

QBrush	mBrush

QCPScatterStyle	mScatterStyle

QCPScatterStyle::ScatterProperties	mUsedScatterProperties

QCPAbstractPlottable *	mPlottable

Detailed Description

A selection decorator which draws brackets around each selected data segment.

Additionally to the regular highlighting of selected segments via color, fill and scatter style, this QCPSelectionDecorator subclass draws markers at the begin and end of each selected data segment of the plottable.

The shape of the markers can be controlled with setBracketStyle, setBracketWidth and setBracketHeight. The color/fill can be controlled with setBracketPen and setBracketBrush.

To introduce custom bracket styles, it is only necessary to sublcass QCPSelectionDecoratorBracket and reimplement drawBracket. The rest will be managed by the base class.

Member Enumeration Documentation

◆ BracketStyle

enum QCPSelectionDecoratorBracket::BracketStyle

Defines which shape is drawn at the boundaries of selected data ranges.

Some of the bracket styles further allow specifying a height and/or width, see setBracketHeight and setBracketWidth.

Enumerator
bsSquareBracket	A square bracket is drawn.
bsHalfEllipse	A half ellipse is drawn. The size of the ellipse is given by the bracket width/height properties.
bsEllipse	An ellipse is drawn. The size of the ellipse is given by the bracket width/height properties.
bsPlus	A plus is drawn.
bsUserStyle	Start custom bracket styles at this index when subclassing and reimplementing drawBracket.

Constructor & Destructor Documentation

◆ QCPSelectionDecoratorBracket()

QCPSelectionDecoratorBracket::QCPSelectionDecoratorBracket ( )

Creates a new QCPSelectionDecoratorBracket instance with default values.

Member Function Documentation

◆ drawBracket()

void QCPSelectionDecoratorBracket::drawBracket	(	QCPPainter *	painter,
		int	direction ) const

virtual

Draws the bracket shape with painter. The parameter direction is either -1 or 1 and indicates whether the bracket shall point to the left or the right (i.e. is a closing or opening bracket, respectively).

The passed painter already contains all transformations that are necessary to position and rotate the bracket appropriately. Painting operations can be performed as if drawing upright brackets on flat data with horizontal key axis, with (0, 0) being the center of the bracket.

If you wish to sublcass QCPSelectionDecoratorBracket in order to provide custom bracket shapes (see QCPSelectionDecoratorBracket::bsUserStyle), this is the method you should reimplement.

◆ drawDecoration()

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

virtual

Draws the bracket decoration on the data points at the begin and end of each selected data segment given in seletion.

It uses the method drawBracket to actually draw the shapes.

\seebaseclassmethod

Reimplemented from QCPSelectionDecorator.

◆ setBracketBrush()

void QCPSelectionDecoratorBracket::setBracketBrush ( const QBrush & brush )

Sets the brush that will be used to draw the brackets at the beginning and end of each selected data segment.

◆ setBracketHeight()

void QCPSelectionDecoratorBracket::setBracketHeight ( int height )

Sets the height of the drawn bracket. The height dimension is always perpendicular to the key axis of the data, or the tangent direction of the current data slope, if setTangentToData is enabled.

◆ setBracketPen()

void QCPSelectionDecoratorBracket::setBracketPen ( const QPen & pen )

Sets the pen that will be used to draw the brackets at the beginning and end of each selected data segment.

◆ setBracketStyle()

void QCPSelectionDecoratorBracket::setBracketStyle ( QCPSelectionDecoratorBracket::BracketStyle style )

Sets the shape that the bracket/marker will have.

See also: setBracketWidth, setBracketHeight

◆ setBracketWidth()

void QCPSelectionDecoratorBracket::setBracketWidth ( int width )

Sets the width of the drawn bracket. The width dimension is always parallel to the key axis of the data, or the tangent direction of the current data slope, if setTangentToData is enabled.

◆ setTangentAverage()

void QCPSelectionDecoratorBracket::setTangentAverage ( int pointCount )

Controls over how many data points the slope shall be averaged, when brackets shall be aligned with the data (if setTangentToData is true).

From the position of the bracket, pointCount points towards the selected data range will be taken into account. The smallest value of pointCount is 1, which is effectively equivalent to disabling setTangentToData.

◆ setTangentToData()

void QCPSelectionDecoratorBracket::setTangentToData ( bool enabled )

Sets whether the brackets will be rotated such that they align with the slope of the data at the position that they appear in.

For noisy data, it might be more visually appealing to average the slope over multiple data points. This can be configured via setTangentAverage.

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

app/NaFCSE/qcustomplot.h
app/NaFCSE/qcustomplot.cpp

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes