.TH "QwtPlotAbstractGLCanvas" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPlotAbstractGLCanvas \- Base class of \fBQwtPlotOpenGLCanvas\fP and \fBQwtPlotGLCanvas\fP\&.  

.SH SYNOPSIS
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\fC#include <qwt_plot_abstract_canvas\&.h>\fP
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Inherits \fBQwtPlotAbstractCanvas\fP\&.
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Inherited by \fBQwtPlotGLCanvas\fP, and \fBQwtPlotOpenGLCanvas\fP\&.
.SS "Public Types"

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.RI "enum \fBPaintAttribute\fP { \fBBackingStore\fP = 1, \fBImmediatePaint\fP = 8 }"
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.RI "Paint attributes\&. "
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.RI "typedef QFlags< \fBPaintAttribute\fP > \fBPaintAttributes\fP"
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.RI "Paint attributes\&. "
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.SS "Public Member Functions"

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.RI "\fBQwtPlotAbstractGLCanvas\fP (QWidget *\fBcanvasWidget\fP)"
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.RI "Constructor\&. "
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.RI "virtual \fB~QwtPlotAbstractGLCanvas\fP ()"
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.RI "Destructor\&. "
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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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.RI "void \fBsetFrameStyle\fP (int style)"
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.RI "int \fBframeStyle\fP () const"
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.RI "void \fBsetFrameShadow\fP (QFrame::Shadow)"
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.RI "QFrame::Shadow \fBframeShadow\fP () const"
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.RI "void \fBsetFrameShape\fP (QFrame::Shape)"
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.RI "QFrame::Shape \fBframeShape\fP () const"
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.RI "void \fBsetLineWidth\fP (int)"
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.RI "int \fBlineWidth\fP () const"
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.RI "void \fBsetMidLineWidth\fP (int)"
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.RI "int \fBmidLineWidth\fP () const"
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.RI "int \fBframeWidth\fP () const"
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.RI "QRect \fBframeRect\fP () const"
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.RI "virtual void \fBinvalidateBackingStore\fP ()=0"
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.RI "Invalidate the internal backing store\&. "
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.SS "Protected Member Functions"

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.RI "void \fBreplot\fP ()"
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.RI "void \fBdraw\fP (QPainter *)"
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.RI "Helper function for the derived plot canvas\&. "
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.SH "Detailed Description"
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Base class of \fBQwtPlotOpenGLCanvas\fP and \fBQwtPlotGLCanvas\fP\&. 
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Definition at line 87 of file qwt_plot_abstract_canvas\&.h\&.
.SH "Member Typedef Documentation"
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.SS "typedef QFlags<\fBPaintAttribute\fP > \fBQwtPlotAbstractGLCanvas::PaintAttributes\fP"

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Paint attributes\&. An ORed combination of \fBPaintAttribute\fP values\&. 
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Definition at line 122 of file qwt_plot_abstract_canvas\&.h\&.
.SH "Member Enumeration Documentation"
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.SS "enum \fBQwtPlotAbstractGLCanvas::PaintAttribute\fP"

.PP
Paint attributes\&. The default setting enables BackingStore and Opaque\&.
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\fBSee also\fP
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\fBsetPaintAttribute()\fP, \fBtestPaintAttribute()\fP 
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\fBEnumerator\fP
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.TP
\fB\fIBackingStore \fP\fP
Paint double buffered reusing the content of the pixmap buffer when possible\&. Using a backing store might improve the performance significantly, when working with widget overlays ( like rubber bands )\&. Disabling the cache might improve the performance for incremental paints (using \fBQwtPlotDirectPainter\fP )\&.
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\fBSee also\fP
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backingStore(), \fBinvalidateBackingStore()\fP 
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\fB\fIImmediatePaint \fP\fP
When ImmediatePaint is set \fBreplot()\fP calls repaint() instead of update()\&.
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\fBSee also\fP
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\fBreplot()\fP, QWidget::repaint(), QWidget::update() 
.RE
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Definition at line 97 of file qwt_plot_abstract_canvas\&.h\&.
.SH "Constructor & Destructor Documentation"
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.SS "QwtPlotAbstractGLCanvas::QwtPlotAbstractGLCanvas (QWidget * canvasWidget)\fC [explicit]\fP"

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Constructor\&. 
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\fBParameters\fP
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\fIcanvasWidget\fP plot canvas widget 
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Definition at line 904 of file qwt_plot_abstract_canvas\&.cpp\&.
.SH "Member Function Documentation"
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.SS "QRect QwtPlotAbstractGLCanvas::frameRect () const"

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\fBReturns\fP
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The rectangle where the frame is drawn in\&. 
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Definition at line 1105 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow () const"

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\fBReturns\fP
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Frame shadow 
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\fBSee also\fP
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\fBsetFrameShadow()\fP, QFrame::setFrameShadow() 
.RE
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Definition at line 1000 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "QFrame::Shape QwtPlotAbstractGLCanvas::frameShape () const"

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\fBReturns\fP
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Frame shape 
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\fBSee also\fP
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\fBsetFrameShape()\fP, QFrame::frameShape() 
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Definition at line 1020 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "int QwtPlotAbstractGLCanvas::frameStyle () const"

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\fBReturns\fP
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The bitwise OR between a \fBframeShape()\fP and a \fBframeShadow()\fP 
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\fBSee also\fP
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\fBsetFrameStyle()\fP, QFrame::frameStyle() 
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Definition at line 980 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "int QwtPlotAbstractGLCanvas::frameWidth () const"

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\fBReturns\fP
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Frame width depending on the style, line width and midline width\&. 
.RE
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Definition at line 1084 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "int QwtPlotAbstractGLCanvas::lineWidth () const"

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\fBReturns\fP
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Line width of the frame 
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\fBSee also\fP
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\fBsetLineWidth()\fP, \fBmidLineWidth()\fP 
.RE
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Definition at line 1048 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "int QwtPlotAbstractGLCanvas::midLineWidth () const"

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\fBReturns\fP
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Midline width of the frame 
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\fBSee also\fP
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\fBsetMidLineWidth()\fP, \fBlineWidth()\fP 
.RE
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Definition at line 1076 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::replot ()\fC [protected]\fP"
Invalidate the paint cache and repaint the canvas 
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\fBSee also\fP
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invalidatePaintCache() 
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Definition at line 1093 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setFrameShadow (QFrame::Shadow shadow)"
Set the frame shadow
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\fBParameters\fP
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\fIshadow\fP Frame shadow 
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\fBSee also\fP
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\fBframeShadow()\fP, \fBsetFrameShape()\fP, QFrame::setFrameShadow() 
.RE
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Definition at line 991 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setFrameShape (QFrame::Shape shape)"
Set the frame shape
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\fBParameters\fP
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\fIshape\fP Frame shape 
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\fBSee also\fP
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\fBframeShape()\fP, \fBsetFrameShadow()\fP, QFrame::frameShape() 
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Definition at line 1011 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setFrameStyle (int style)"
Set the frame style
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\fBParameters\fP
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\fIstyle\fP The bitwise OR between a shape and a shadow\&.
.RE
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\fBSee also\fP
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\fBframeStyle()\fP, QFrame::setFrameStyle(), \fBsetFrameShadow()\fP, \fBsetFrameShape()\fP 
.RE
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Definition at line 965 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setLineWidth (int width)"
Set the frame line width
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The default line width is 2 pixels\&.
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\fBParameters\fP
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\fIwidth\fP Line width of the frame 
.RE
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\fBSee also\fP
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\fBlineWidth()\fP, \fBsetMidLineWidth()\fP 
.RE
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Definition at line 1033 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setMidLineWidth (int width)"
Set the frame mid line width
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The default midline width is 0 pixels\&.
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\fBParameters\fP
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\fIwidth\fP Midline width of the frame 
.RE
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\fBSee also\fP
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\fBmidLineWidth()\fP, \fBsetLineWidth()\fP 
.RE
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Definition at line 1061 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "void QwtPlotAbstractGLCanvas::setPaintAttribute (\fBPaintAttribute\fP attribute, bool on = \fCtrue\fP)"

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Changing the paint attributes\&. 
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\fBParameters\fP
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\fIattribute\fP Paint attribute 
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\fIon\fP On/Off
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\fBSee also\fP
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\fBtestPaintAttribute()\fP 
.RE
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Definition at line 927 of file qwt_plot_abstract_canvas\&.cpp\&.
.SS "bool QwtPlotAbstractGLCanvas::testPaintAttribute (\fBPaintAttribute\fP attribute) const"
Test whether a paint attribute is enabled
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\fBParameters\fP
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\fIattribute\fP Paint attribute 
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\fBReturns\fP
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true, when attribute is enabled 
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\fBSee also\fP
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\fBsetPaintAttribute()\fP 
.RE
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Definition at line 952 of file qwt_plot_abstract_canvas\&.cpp\&.

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