QwtIntervalSymbol(3)

💖 QwtIntervalSymbol(3) 💖

okay so welcome to the QwtIntervalSymbol(3) page, bestie — it lives in the Library Functions Manual and it's literally a whole drawing primitive for showing an interval like an error bar. tiny class, main character energy. 💅

🌸 NAME 🌸

QwtIntervalSymbol — a drawing primitive for displaying an interval like an error bar. periodt. ✨

✨ SYNOPSIS ✨

#include <qwt_interval_symbol.h>

🎀 Public Types 🎀

• enum Style { NoSymbol = -1, Bar, Box, UserSymbol = 1000 } — Symbol style.

🦋 Public Member Functions 🦋

• QwtIntervalSymbol (Style=NoSymbol)
• QwtIntervalSymbol (const QwtIntervalSymbol &) — Copy constructor.
• virtual ~QwtIntervalSymbol () — Destructor.
• QwtIntervalSymbol & operator= (const QwtIntervalSymbol &) — Assignment operator.
• bool operator== (const QwtIntervalSymbol &) const — Compare two symbols.
• bool operator!= (const QwtIntervalSymbol &) const — Compare two symbols.
• void setWidth (int)
• int width () const
• void setBrush (const QBrush &) — Assign a brush.
• const QBrush & brush () const
• void setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
• void setPen (const QPen &)
• const QPen & pen () const
• void setStyle (Style)
• Style style () const
• virtual void draw (QPainter *, Qt::Orientation, const QPointF &from, const QPointF &to) const

🌈 Detailed Description 🌈

A drawing primitive for displaying an interval like an error bar.

See also: QwtPlotIntervalCurve

Definition at line 27 of file qwt_interval_symbol.h.

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👑 Member Enumeration Documentation 👑

enum QwtIntervalSymbol::Style

Symbol style.

• NoSymbol — No Style. The symbol cannot be drawn.
• Bar — The symbol displays a line with caps at the beginning/end. The size of the caps depends on the symbol width().
• Box — The symbol displays a plain rectangle using pen() and brush(). The size of the rectangle depends on the translated interval and the width(),
• UserSymbol — Styles >= UserSymbol are reserved for derived classes of QwtIntervalSymbol that overload draw() with additional application specific symbol types.

Definition at line 31 of file qwt_interval_symbol.h.

🧚 Constructor & Destructor Documentation 🧚

QwtIntervalSymbol::QwtIntervalSymbol (Style style = NoSymbol) [explicit]

Constructor.

Parameters:

• style — Style of the symbol

See also: setStyle(), style(), Style

Definition at line 47 of file qwt_interval_symbol.cpp.

QwtIntervalSymbol::QwtIntervalSymbol (const QwtIntervalSymbol & other)

Copy constructor.

Definition at line 54 of file qwt_interval_symbol.cpp.

QwtIntervalSymbol::~QwtIntervalSymbol () [virtual]

Destructor.

Definition at line 61 of file qwt_interval_symbol.cpp.

🍓 Member Function Documentation 🍓

const QBrush & QwtIntervalSymbol::brush () const

Returns:

• Brush

See also: setBrush()

Definition at line 146 of file qwt_interval_symbol.cpp.

void QwtIntervalSymbol::draw (QPainter * painter, Qt::Orientation orientation, const QPointF & from, const QPointF & to) const [virtual]

Draw a symbol depending on its style.

Parameters:

• painter — Painter
• orientation — Orientation
• from — Start point of the interval in target device coordinates
• to — End point of the interval in target device coordinates

See also: setStyle()

Definition at line 200 of file qwt_interval_symbol.cpp.

bool QwtIntervalSymbol::operator!= (const QwtIntervalSymbol & other) const

Compare two symbols.

Definition at line 82 of file qwt_interval_symbol.cpp.

QwtIntervalSymbol & QwtIntervalSymbol::operator= (const QwtIntervalSymbol & other)

Assignment operator.

Definition at line 67 of file qwt_interval_symbol.cpp.

bool QwtIntervalSymbol::operator== (const QwtIntervalSymbol & other) const

Compare two symbols.

Definition at line 75 of file qwt_interval_symbol.cpp.

const QPen & QwtIntervalSymbol::pen () const

Returns:

• Pen

See also: setPen(), brush()

Definition at line 185 of file qwt_interval_symbol.cpp.

void QwtIntervalSymbol::setBrush (const QBrush & brush)

Assign a brush. The brush is used for the Box style.

Parameters:

• brush — Brush

See also: brush()

Definition at line 137 of file qwt_interval_symbol.cpp.

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

Build and assign a pen.

Lowkey important: in Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ), which 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 164 of file qwt_interval_symbol.cpp.

void QwtIntervalSymbol::setPen (const QPen & pen)

Assign a pen.

Parameters:

• pen — Pen

See also: pen(), setBrush()

Definition at line 176 of file qwt_interval_symbol.cpp.

void QwtIntervalSymbol::setStyle (Style style)

Specify the symbol style.

Parameters:

• style — Style

See also: style(), Style

Definition at line 94 of file qwt_interval_symbol.cpp.

void QwtIntervalSymbol::setWidth (int width)

Specify the width of the symbol. It is used depending on the style.

Parameters:

• width — Width

See also: width(), setStyle()

Definition at line 115 of file qwt_interval_symbol.cpp.

QwtIntervalSymbol::Style QwtIntervalSymbol::style () const

Returns:

• Current symbol style

See also: setStyle()

Definition at line 103 of file qwt_interval_symbol.cpp.

int QwtIntervalSymbol::width () const

Returns:

• Width of the symbol.

See also: setWidth(), setStyle()

Definition at line 124 of file qwt_interval_symbol.cpp.

⭐ Author ⭐

Generated automatically by Doxygen for Qwt User's Guide from the source code.

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