qwtmarker.3

linux下qt的第三方的一个类

.TH "QwtMarker" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtMarker \- 
.SH SYNOPSIS
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.PP
Inherited by \fBQwtPlotMarker\fP.
.PP
.SH "Detailed Description"
.PP 
A class for drawing markers. 

A marker can be a horizontal line, a vertical line, a symbol, a label or any combination of them, which can be drawn around a center point inside a bounding rectangle.
.PP
The \fBQwtMarker::setSymbol()\fP member assigns a symbol to the marker. The symbol is drawn at the specified point.
.PP
With \fBQwtMarker::setLabel()\fP, a label can be assigned to the marker. The \fBQwtMarker::setLabelAlignment()\fP member specifies where the label is drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation) are valid. The interpretation of the alignment depends on the marker's line style. The alignment refers to the center point of the marker, which means, for example, that the label would be printed left above the center point if the alignment was set to AlignLeft|AlignTop. 
.PP
Definition at line 43 of file qwt_marker.h.
.SS "Public Types"

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.RI "enum \fBLineStyle\fP { \fBNoLine\fP, \fBHLine\fP, \fBVLine\fP, \fBCross\fP }"
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.SS "Public Member Functions"

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.RI "\fBQwtMarker\fP ()"
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.RI "virtual \fB~QwtMarker\fP ()"
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.RI "\fBQwtMarker\fP (const \fBQwtMarker\fP &)"
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.RI "\fBQwtMarker\fP & \fBoperator=\fP (const \fBQwtMarker\fP &)"
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.RI "void \fBsetLineStyle\fP (\fBLineStyle\fP st)"
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.RI "\fBLineStyle\fP \fBlineStyle\fP () const"
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.RI "void \fBsetSymbol\fP (const \fBQwtSymbol\fP &s)"
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.RI "const \fBQwtSymbol\fP & \fBsymbol\fP () const"
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.RI "void \fBsetLabel\fP (const QString &text, const QFont &font=QFont(), const QColor &color=QColor(), const QPen &pen=QPen(Qt::NoPen), const QBrush &brush=QBrush(Qt::NoBrush))"
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.RI "void \fBsetLabelText\fP (const QString &text)"
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.RI "const QString \fBlabel\fP () const"
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.RI "void \fBsetLabelAlignment\fP (int align)"
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.RI "int \fBlabelAlignment\fP () const"
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.RI "void \fBsetLabelColor\fP (const QColor &c)"
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.RI "const QColor \fBlabelColor\fP () const"
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.RI "void \fBsetLabelPen\fP (const QPen &p)"
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.RI "const QPen \fBlabelPen\fP () const"
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.RI "void \fBsetLinePen\fP (const QPen &p)"
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.RI "const QPen & \fBlinePen\fP () const"
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.RI "void \fBsetFont\fP (const QFont &f)"
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.RI "const QFont \fBfont\fP () const"
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.RI "virtual void \fBdraw\fP (QPainter *p, int x, int y, const QRect &r)"
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.SS "Protected Member Functions"

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.RI "virtual void \fBmarkerChanged\fP ()"
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.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtMarker::LineStyle\fP"
.PP
Line styles. 
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\fBSee also:\fP
.RS 4
\fBQwtMarker::setLineStyle\fP, \fBQwtMarker::lineStyle\fP 
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Definition at line 51 of file qwt_marker.h.
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Referenced by lineStyle().
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtMarker::QwtMarker ()"
.PP
Sets alignment to Qt::AlignCenter, and style to NoLine. 
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Definition at line 20 of file qwt_marker.cpp.
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References QwtText::makeText().
.SS "QwtMarker::~\fBQwtMarker\fP ()\fC [virtual]\fP"
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Destructor. 
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Definition at line 29 of file qwt_marker.cpp.
.SS "QwtMarker::QwtMarker (const \fBQwtMarker\fP & m)"
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Copy constructor. 
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\fBParameters:\fP
.RS 4
\fIm\fP Marker 
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Definition at line 38 of file qwt_marker.cpp.
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References QwtText::clone(), d_align, d_label, d_pen, d_style, and d_sym.
.SH "Member Function Documentation"
.PP 
.SS "void QwtMarker::draw (QPainter * p, int x, int y, const QRect & r)\fC [virtual]\fP"
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Draw the marker. 
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\fBParameters:\fP
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\fIp\fP Painter 
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\fIx\fP X position 
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\fIy\fP Y position 
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\fIr\fP Bounding rectangle 
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Definition at line 72 of file qwt_marker.cpp.
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References QwtText::boundingRect(), QwtText::draw(), QwtSymbol::draw(), QwtPainter::drawLine(), QwtPainter::metricsMap(), QwtSymbol::size(), QwtSymbol::style(), and QwtText::text().
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Referenced by QwtPlot::drawCanvasItems().
.SS "const QFont QwtMarker::font () const"
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\fBReturns:\fP
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the font used for the label 
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\fBSee also:\fP
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\fBQwtMarker::setFont()\fP 
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Definition at line 189 of file qwt_marker.cpp.
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References QwtText::font().
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Referenced by QwtPlotPrintFilter::apply(), and QwtPlot::markerFont().
.SS "const QString QwtMarker::label () const"
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\fBReturns:\fP
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the label 
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\fBSee also:\fP
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\fBQwtMarker::setLabel()\fP 
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Definition at line 282 of file qwt_marker.cpp.
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References QwtText::text().
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Referenced by QwtPlot::markerLabel(), and setLabel().
.SS "int QwtMarker::labelAlignment () const"
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\fBReturns:\fP
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the label alignment 
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\fBSee also:\fP
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\fBQwtMarker::setLabelAlignment()\fP 
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Definition at line 311 of file qwt_marker.cpp.
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Referenced by QwtPlot::markerLabelAlign().
.SS "const QColor QwtMarker::labelColor () const"
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\fBReturns:\fP
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the label's color 
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\fBSee also:\fP
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\fBQwtMarker::setLabelPen()\fP 
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Definition at line 357 of file qwt_marker.cpp.
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References QwtText::color().
.SS "const QPen QwtMarker::labelPen () const"
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\fBReturns:\fP
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the label's pen 
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\fBSee also:\fP
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\fBQwtMarker::setLabelPen()\fP 
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\fBWarning:\fP
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This function is deprecated. Use \fBQwtMarker::labelColor\fP. 
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Definition at line 382 of file qwt_marker.cpp.
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References QwtText::color().
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Referenced by QwtPlotPrintFilter::apply(), QwtPlot::markerLabelPen(), and QwtPlotPrintFilter::reset().
.SS "const QPen & QwtMarker::linePen () const"
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\fBReturns:\fP
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the line pen 
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\fBSee also:\fP
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\fBQwtMarker::setLinePen()\fP 
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Definition at line 334 of file qwt_marker.cpp.
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Referenced by QwtPlotPrintFilter::apply(), QwtPlot::markerLinePen(), and QwtPlotPrintFilter::reset().
.SS "\fBQwtMarker::LineStyle\fP QwtMarker::lineStyle () const"
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\fBReturns:\fP
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the line style 
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\fBSee also:\fP
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For a description of line styles, see \fBQwtMarker::setLineStyle()\fP 
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Definition at line 214 of file qwt_marker.cpp.
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References LineStyle.
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Referenced by QwtPlot::closestMarker(), and QwtPlot::markerLineStyle().
.SS "void QwtMarker::markerChanged ()\fC [protected, virtual]\fP"
.PP
Notify a change of parameters. 
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This virtual function is called when a marker property has been changed and redrawing is advisable. It can be reimplemented by derived classes. The default implementation does nothing. 
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Reimplemented in \fBQwtPlotMarker\fP.
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Definition at line 395 of file qwt_marker.cpp.
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Referenced by setFont(), setLabel(), setLabelAlignment(), setLabelColor(), setLabelPen(), setLinePen(), setLineStyle(), setSymbol(), QwtPlotMarker::setXValue(), and QwtPlotMarker::setYValue().
.SS "\fBQwtMarker\fP & QwtMarker::operator= (const \fBQwtMarker\fP & m)"
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Assignment operator. 
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\fBParameters:\fP
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\fIm\fP Marker 
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Definition at line 51 of file qwt_marker.cpp.
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References QwtText::clone(), d_align, d_label, d_pen, d_style, and d_sym.
.SS "void QwtMarker::setFont (const QFont & f)"
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Specify the font for the label. 
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\fBParameters:\fP
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\fIf\fP New font 
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\fBSee also:\fP
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\fBQwtMarker::font()\fP 
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Definition at line 176 of file qwt_marker.cpp.
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References QwtText::font(), markerChanged(), and QwtText::setFont().
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Referenced by QwtPlotPrintFilter::apply(), QwtPlotPrintFilter::reset(), and QwtPlot::setMarkerFont().
.SS "void QwtMarker::setLabel (const QString & text, const QFont & font = \fCQFont()\fP, const QColor & color = \fCQColor()\fP, const QPen & pen = \fCQPen(Qt::NoPen)\fP, const QBrush & brush = \fCQBrush(Qt::NoBrush)\fP)"
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Set the label. 
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\fBParameters:\fP
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\fItext\fP Contents of the label text 
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\fIfont\fP Font of the label text 
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\fIcolor\fP Color of the label text 
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\fIpen\fP Pen to draw the enclosing rectangle 
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\fIbrush\fP Brush to draw the enclosing rectangle 
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\fBSee also:\fP
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\fBQwtMarker::label()\fP 
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Definition at line 259 of file qwt_marker.cpp.
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References QwtText::alignment(), QwtText::color(), QwtText::font(), label(), QwtText::makeText(), markerChanged(), QwtText::rectBrush(), QwtText::rectPen(), and QwtText::text().
.PP
Referenced by QwtPlot::insertLineMarker(), QwtPlot::insertMarker(), setLabelText(), and QwtPlot::setMarkerLabel().
.SS "void QwtMarker::setLabelAlignment (int align)"
.PP
Set the alignment of the label. 
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The alignment determines where the label is drawn relative to the marker's position.
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\fBParameters:\fP
.RS 4
\fIalign\fP Alignment. A combination of AlignTop, AlignBottom, AlignLeft, AlignRight, AlignCenter, AlgnHCenter, AlignVCenter. 
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\fBSee also:\fP
.RS 4
\fBQwtMarker::labelAlignment()\fP 
.RE
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Definition at line 298 of file qwt_marker.cpp.
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References markerChanged().
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Referenced by QwtPlot::insertLineMarker(), and QwtPlot::setMarkerLabelAlign().
.SS "void QwtMarker::setLabelColor (const QColor & color)"
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Specify a color for the label. 
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\fBParameters:\fP
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\fIcolor\fP Color of the label text 
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\fBSee also:\fP
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\fBQwtMarker::labelColor()\fP 
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Definition at line 344 of file qwt_marker.cpp.
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References QwtText::color(), markerChanged(), and QwtText::setColor().
.SS "void QwtMarker::setLabelPen (const QPen & p)"
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Specify a pen for the label. 
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\fBParameters:\fP
.RS 4
\fIp\fP New pen 
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\fBSee also:\fP
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\fBQwtMarker::labelPen()\fP 
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\fBWarning:\fP
.RS 4
This function is deprecated. Use \fBQwtMarker::setLabelColor\fP. 
.RE
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Definition at line 368 of file qwt_marker.cpp.
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References QwtText::color(), markerChanged(), and QwtText::setColor().
.PP
Referenced by QwtPlotPrintFilter::apply(), QwtPlotPrintFilter::reset(), QwtPlot::setMarkerLabelPen(), and QwtPlot::setMarkerPen().
.SS "void QwtMarker::setLabelText (const QString & text)"
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Set the label text. 
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\fBParameters:\fP
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\fItext\fP label text 
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\fBSee also:\fP
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\fBQwtMarker::label()\fP 
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Definition at line 244 of file qwt_marker.cpp.
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References QwtText::color(), QwtText::font(), QwtText::rectBrush(), QwtText::rectPen(), and setLabel().
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Referenced by QwtPlot::setMarkerLabelText().
.SS "void QwtMarker::setLinePen (const QPen & p)"
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Specify a pen for the line. 
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\fBParameters:\fP
.RS 4
\fIp\fP New pen 
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\fBSee also:\fP
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\fBQwtMarker::linePen()\fP 
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Definition at line 321 of file qwt_marker.cpp.
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References markerChanged().
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Referenced by QwtPlotPrintFilter::apply(), QwtPlotPrintFilter::reset(), QwtPlot::setMarkerLinePen(), and QwtPlot::setMarkerPen().
.SS "void QwtMarker::setLineStyle (\fBQwtMarker::LineStyle\fP st)"
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Set the line style. 
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\fBParameters:\fP
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\fIst\fP Line style. Can be one of QwtMarker::NoLine, QwtMarker::HLine, QwtMarker::VLine or QwtMarker::Cross 
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\fBSee also:\fP
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\fBQwtMarker::lineStyle()\fP 
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Definition at line 201 of file qwt_marker.cpp.
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References markerChanged().
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Referenced by QwtPlot::insertLineMarker(), and QwtPlot::setMarkerLineStyle().
.SS "void QwtMarker::setSymbol (const \fBQwtSymbol\fP & s)"
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Assign a symbol. 
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\fBParameters:\fP
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\fIs\fP New symbol 
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\fBSee also:\fP
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\fBQwtSymbol\fP, \fBQwtMarker::symbol()\fP 
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Definition at line 224 of file qwt_marker.cpp.
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References markerChanged().
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Referenced by QwtPlotPrintFilter::apply(), QwtPlotPrintFilter::reset(), and QwtPlot::setMarkerSymbol().
.SS "const \fBQwtSymbol\fP & QwtMarker::symbol () const"
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\fBReturns:\fP
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the symbol 
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\fBSee also:\fP
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\fBQwtMarker::setSymbol()\fP, \fBQwtSymbol\fP 
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Definition at line 234 of file qwt_marker.cpp.
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Referenced by QwtPlotPrintFilter::apply(), QwtPlot::closestMarker(), QwtPlot::markerSymbol(), and QwtPlotPrintFilter::reset().

.SH "Author"
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