265 lines
5.2 KiB
Groff
265 lines
5.2 KiB
Groff
.TH "QwtPolarCanvas" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtPolarCanvas \- Canvas of a \fBQwtPolarPlot\fP\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_polar_canvas\&.h>\fP
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.PP
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Inherits QFrame\&.
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.SS "Public Types"
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.in +1c
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.ti -1c
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.RI "enum \fBPaintAttribute\fP { \fBBackingStore\fP = 0x01 }"
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.br
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.RI "Paint attributes\&. "
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.ti -1c
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.RI "typedef QFlags< \fBPaintAttribute\fP > \fBPaintAttributes\fP"
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.br
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.in -1c
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtPolarCanvas\fP (\fBQwtPolarPlot\fP *)"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "virtual \fB~QwtPolarCanvas\fP ()"
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.br
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.RI "Destructor\&. "
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.RI "\fBQwtPolarPlot\fP * \fBplot\fP ()"
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.RI "const \fBQwtPolarPlot\fP * \fBplot\fP () const"
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.RI "void \fBsetPaintAttribute\fP (\fBPaintAttribute\fP, bool on=true)"
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.RI "Changing the paint attributes\&. "
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.RI "bool \fBtestPaintAttribute\fP (\fBPaintAttribute\fP) const"
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.br
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.ti -1c
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.RI "const QPixmap * \fBbackingStore\fP () const"
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.RI "void \fBinvalidateBackingStore\fP ()"
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.br
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.RI "Invalidate the internal backing store\&. "
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.ti -1c
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.RI "\fBQwtPointPolar\fP \fBinvTransform\fP (const QPoint &) const"
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.br
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.ti -1c
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.RI "QPoint \fBtransform\fP (const \fBQwtPointPolar\fP &) const"
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.br
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.in -1c
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.SS "Protected Member Functions"
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.in +1c
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.RI "virtual void \fBpaintEvent\fP (QPaintEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBresizeEvent\fP (QResizeEvent *) override"
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.br
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.in -1c
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.SH "Detailed Description"
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.PP
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Canvas of a \fBQwtPolarPlot\fP\&.
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The canvas is the widget, where all polar items are painted to\&.
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.PP
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\fBNote\fP
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.RS 4
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In opposite to \fBQwtPlot\fP all axes are painted on the canvas\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPolarPlot\fP
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.RE
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.PP
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.PP
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Definition at line 27 of file qwt_polar_canvas\&.h\&.
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.SH "Member Typedef Documentation"
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.PP
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.SS "typedef QFlags<\fBPaintAttribute\fP > \fBQwtPolarCanvas::PaintAttributes\fP"
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An ORed combination of \fBPaintAttribute\fP values\&.
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.PP
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Definition at line 50 of file qwt_polar_canvas\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtPolarCanvas::PaintAttribute\fP"
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.PP
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Paint attributes\&. The default setting enables BackingStore
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPaintAttribute()\fP, \fBtestPaintAttribute()\fP, \fBbackingStore()\fP
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.RE
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.PP
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fIBackingStore \fP\fP
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Paint double buffered and reuse the content of the pixmap buffer for some spontaneous repaints that happen when a plot gets unhidden, deiconified or changes the focus\&.
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.PP
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Definition at line 40 of file qwt_polar_canvas\&.h\&.
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.SH "Member Function Documentation"
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.PP
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.SS "const QPixmap * QwtPolarCanvas::backingStore () const"
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.PP
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\fBReturns\fP
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.RS 4
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Backing store, might be null
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.RE
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.PP
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.PP
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Definition at line 170 of file qwt_polar_canvas\&.cpp\&.
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.SS "\fBQwtPointPolar\fP QwtPolarCanvas::invTransform (const QPoint & pos) const"
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Translate a point from widget into plot coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIpos\fP Point in widget coordinates of the plot canvas
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Point in plot coordinates
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBtransform()\fP
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.RE
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.PP
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.PP
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Definition at line 267 of file qwt_polar_canvas\&.cpp\&.
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.SS "void QwtPolarCanvas::paintEvent (QPaintEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Paint event
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Paint event
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.RE
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.PP
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.PP
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Definition at line 186 of file qwt_polar_canvas\&.cpp\&.
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.SS "\fBQwtPolarPlot\fP * QwtPolarCanvas::plot ()"
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.PP
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\fBReturns\fP
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.RS 4
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Parent plot widget
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.RE
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.PP
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.PP
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Definition at line 97 of file qwt_polar_canvas\&.cpp\&.
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.SS "const \fBQwtPolarPlot\fP * QwtPolarCanvas::plot () const"
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.PP
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\fBReturns\fP
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.RS 4
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Parent plot widget
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.RE
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.PP
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.PP
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Definition at line 103 of file qwt_polar_canvas\&.cpp\&.
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.SS "void QwtPolarCanvas::resizeEvent (QResizeEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Resize event
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Resize event
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.RE
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.PP
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.PP
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Definition at line 251 of file qwt_polar_canvas\&.cpp\&.
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.SS "void QwtPolarCanvas::setPaintAttribute (\fBPaintAttribute\fP attribute, bool on = \fCtrue\fP)"
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.PP
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Changing the paint attributes\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIattribute\fP Paint attribute
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.br
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\fIon\fP On/Off
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.RE
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.PP
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The default setting enables BackingStore
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.PP
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\fBSee also\fP
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.RS 4
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\fBtestPaintAttribute()\fP, paintCache()
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.RE
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.PP
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.PP
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Definition at line 118 of file qwt_polar_canvas\&.cpp\&.
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.SS "bool QwtPolarCanvas::testPaintAttribute (\fBPaintAttribute\fP attribute) const"
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Test whether a paint attribute is enabled
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.PP
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\fBParameters\fP
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.RS 4
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\fIattribute\fP Paint attribute
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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true if the attribute is enabled
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPaintAttribute()\fP
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.RE
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.PP
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.PP
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Definition at line 164 of file qwt_polar_canvas\&.cpp\&.
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.SS "QPoint QwtPolarCanvas::transform (const \fBQwtPointPolar\fP & polarPos) const"
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Translate a point from plot into widget coordinates
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.PP
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\fBParameters\fP
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.RS 4
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\fIpolarPos\fP Point in plot coordinates
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Point in widget coordinates
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBtransform()\fP
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.RE
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.PP
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.PP
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Definition at line 310 of file qwt_polar_canvas\&.cpp\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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