Sources_For_Linux/Qwt/doc/man/man3/QwtIntervalSymbol.3

.TH "QwtIntervalSymbol" 3 "Mon Dec 28 2020" "Version 6.1.6" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtIntervalSymbol \- A drawing primitive for displaying an interval like an error bar\&.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_interval_symbol\&.h>\fP
.SS "Public Types"

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.RI "enum \fBStyle\fP { \fBNoSymbol\fP = -1, \fBBar\fP, \fBBox\fP, \fBUserSymbol\fP = 1000 }"
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.RI "Symbol style\&. "
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.SS "Public Member Functions"

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.RI "\fBQwtIntervalSymbol\fP (\fBStyle\fP=\fBNoSymbol\fP)"
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.RI "\fBQwtIntervalSymbol\fP (const \fBQwtIntervalSymbol\fP &)"
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.RI "Copy constructor\&. "
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.RI "virtual \fB~QwtIntervalSymbol\fP ()"
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.RI "Destructor\&. "
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.RI "\fBQwtIntervalSymbol\fP & \fBoperator=\fP (const \fBQwtIntervalSymbol\fP &)"
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.RI "Assignment operator\&. "
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.RI "bool \fBoperator==\fP (const \fBQwtIntervalSymbol\fP &) const"
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.RI "Compare two symbols\&. "
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.RI "bool \fBoperator!=\fP (const \fBQwtIntervalSymbol\fP &) const"
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.RI "Compare two symbols\&. "
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.RI "void \fBsetWidth\fP (int)"
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.RI "int \fBwidth\fP () const"
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.RI "void \fBsetBrush\fP (const QBrush &)"
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.RI "Assign a brush\&. "
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.RI "const QBrush & \fBbrush\fP () const"
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.RI "void \fBsetPen\fP (const QColor &, qreal \fBwidth\fP=0\&.0, Qt::PenStyle=Qt::SolidLine)"
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.RI "void \fBsetPen\fP (const QPen &)"
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.RI "const QPen & \fBpen\fP () const"
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.RI "void \fBsetStyle\fP (\fBStyle\fP)"
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.RI "\fBStyle\fP \fBstyle\fP () const"
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.RI "virtual void \fBdraw\fP (QPainter *, Qt::Orientation, const QPointF &from, const QPointF &to) const"
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.SH "Detailed Description"
.PP 
A drawing primitive for displaying an interval like an error bar\&. 


.PP
\fBSee also\fP
.RS 4
\fBQwtPlotIntervalCurve\fP 
.RE
.PP

.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtIntervalSymbol::Style\fP"

.PP
Symbol style\&. 
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\fBEnumerator\fP
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.TP
\fB\fINoSymbol \fP\fP
No Style\&. The symbol cannot be drawn\&. 
.TP
\fB\fIBar \fP\fP
The symbol displays a line with caps at the beginning/end\&. The size of the caps depends on the symbol \fBwidth()\fP\&. 
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\fB\fIBox \fP\fP
The symbol displays a plain rectangle using \fBpen()\fP and \fBbrush()\fP\&. The size of the rectangle depends on the translated interval and the \fBwidth()\fP, 
.TP
\fB\fIUserSymbol \fP\fP
Styles >= UserSymbol are reserved for derived classes of \fBQwtIntervalSymbol\fP that overload \fBdraw()\fP with additional application specific symbol types\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtIntervalSymbol::QwtIntervalSymbol (\fBStyle\fP style = \fC\fBNoSymbol\fP\fP)"
Constructor
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\fBParameters\fP
.RS 4
\fIstyle\fP Style of the symbol 
.RE
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\fBSee also\fP
.RS 4
\fBsetStyle()\fP, \fBstyle()\fP, \fBStyle\fP 
.RE
.PP

.SH "Member Function Documentation"
.PP 
.SS "const QBrush & QwtIntervalSymbol::brush () const"

.PP
\fBReturns\fP
.RS 4
Brush 
.RE
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\fBSee also\fP
.RS 4
\fBsetBrush()\fP 
.RE
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.SS "void QwtIntervalSymbol::draw (QPainter * painter, Qt::Orientation orientation, const QPointF & from, const QPointF & to) const\fC [virtual]\fP"
Draw a symbol depending on its style
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\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
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\fIorientation\fP Orientation 
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\fIfrom\fP Start point of the interval in target device coordinates 
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\fIto\fP End point of the interval in target device coordinates
.RE
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\fBSee also\fP
.RS 4
\fBsetStyle()\fP 
.RE
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.SS "const QPen & QwtIntervalSymbol::pen () const"

.PP
\fBReturns\fP
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Pen 
.RE
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\fBSee also\fP
.RS 4
\fBsetPen()\fP, \fBbrush()\fP 
.RE
.PP

.SS "void QwtIntervalSymbol::setBrush (const QBrush & brush)"

.PP
Assign a brush\&. The brush is used for the Box style\&.
.PP
\fBParameters\fP
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\fIbrush\fP Brush 
.RE
.PP
\fBSee also\fP
.RS 4
\fBbrush()\fP 
.RE
.PP

.SS "void QwtIntervalSymbol::setPen (const QColor & color, qreal width = \fC0\&.0\fP, Qt::PenStyle style = \fCQt::SolidLine\fP)"
Build and assign a pen
.PP
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\&.
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\fBParameters\fP
.RS 4
\fIcolor\fP Pen color 
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\fIwidth\fP Pen width 
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\fIstyle\fP Pen style
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\fBSee also\fP
.RS 4
\fBpen()\fP, \fBbrush()\fP 
.RE
.PP

.SS "void QwtIntervalSymbol::setPen (const QPen & pen)"
Assign a pen
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\fBParameters\fP
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\fIpen\fP Pen 
.RE
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\fBSee also\fP
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\fBpen()\fP, \fBsetBrush()\fP 
.RE
.PP

.SS "void QwtIntervalSymbol::setStyle (\fBStyle\fP style)"
Specify the symbol style
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\fBParameters\fP
.RS 4
\fIstyle\fP Style 
.RE
.PP
\fBSee also\fP
.RS 4
\fBstyle()\fP, \fBStyle\fP 
.RE
.PP

.SS "void QwtIntervalSymbol::setWidth (int width)"
Specify the width of the symbol It is used depending on the style\&.
.PP
\fBParameters\fP
.RS 4
\fIwidth\fP Width 
.RE
.PP
\fBSee also\fP
.RS 4
\fBwidth()\fP, \fBsetStyle()\fP 
.RE
.PP

.SS "\fBQwtIntervalSymbol::Style\fP QwtIntervalSymbol::style () const"

.PP
\fBReturns\fP
.RS 4
Current symbol style 
.RE
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\fBSee also\fP
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\fBsetStyle()\fP 
.RE
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.SS "int QwtIntervalSymbol::width () const"

.PP
\fBReturns\fP
.RS 4
Width of the symbol\&. 
.RE
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\fBSee also\fP
.RS 4
\fBsetWidth()\fP, \fBsetStyle()\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.