sani7/qwt
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add files from zip

Browse Source
This commit is contained in:
Sani7
2023-10-31 09:22:42 +01:00
parent 6bacdc5f6d
commit 4dae68036f
2788 changed files with 492537 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

198
doc/man/man3/QwtPlotGLCanvas.3 Normal file
View File

@@ -0,0 +1,198 @@
.TH "QwtPlotGLCanvas" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtPlotGLCanvas \- An alternative canvas for a \fBQwtPlot\fP derived from QGLWidget\&.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_plot_glcanvas\&.h>\fP
.PP
Inherits QGLWidget, and \fBQwtPlotAbstractGLCanvas\fP\&.
.SS "Public Slots"
.in +1c
.ti -1c
.RI "void \fBreplot\fP ()"
.br
.in -1c
.SS "Public Member Functions"
.in +1c
.ti -1c
.RI "\fBQwtPlotGLCanvas\fP (\fBQwtPlot\fP *=NULL)"
.br
.RI "Constructor\&. "
.ti -1c
.RI "\fBQwtPlotGLCanvas\fP (const QGLFormat &, \fBQwtPlot\fP *=NULL)"
.br
.RI "Constructor\&. "
.ti -1c
.RI "virtual \fB~QwtPlotGLCanvas\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "virtual Q_INVOKABLE void \fBinvalidateBackingStore\fP () override"
.br
.RI "Invalidate the internal backing store\&. "
.ti -1c
.RI "Q_INVOKABLE QPainterPath \fBborderPath\fP (const QRect &) const"
.br
.ti -1c
.RI "virtual bool \fBevent\fP (QEvent *) override"
.br
.in -1c
.SS "Protected Member Functions"
.in +1c
.ti -1c
.RI "virtual void \fBpaintEvent\fP (QPaintEvent *) override"
.br
.ti -1c
.RI "virtual void \fBinitializeGL\fP () override"
.br
.RI "No operation - reserved for some potential use in the future\&. "
.ti -1c
.RI "virtual void \fBpaintGL\fP () override"
.br
.RI "Paint the plot\&. "
.ti -1c
.RI "virtual void \fBresizeGL\fP (int width, int height) override"
.br
.RI "No operation - reserved for some potential use in the future\&. "
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP
An alternative canvas for a \fBQwtPlot\fP derived from QGLWidget\&.
\fBQwtPlotGLCanvas\fP implements the very basics to act as canvas inside of a \fBQwtPlot\fP widget\&. It might be extended to a full featured alternative to \fBQwtPlotCanvas\fP in a future version of Qwt\&.
.PP
Even if \fBQwtPlotGLCanvas\fP is not derived from QFrame it imitates its API\&. When using style sheets it supports the box model - beside backgrounds with rounded borders\&.
.PP
Since Qt 5\&.4 QOpenGLWidget is available, that is used by \fBQwtPlotOpenGLCanvas\fP\&.
.PP
\fBSee also\fP
.RS 4
\fBQwtPlot::setCanvas()\fP, \fBQwtPlotCanvas\fP, \fBQwtPlotOpenGLCanvas\fP
.RE
.PP
\fBNote\fP
.RS 4
With Qt4 you might want to use the QPaintEngine::OpenGL paint engine ( see QGL::setPreferredPaintEngine() )\&. On a Linux test system QPaintEngine::OpenGL2 shows very basic problems like translated geometries\&.
.PP
Another way for getting hardware accelerated graphics is using an OpenGL offscreen buffer ( QwtPlotCanvas::OpenGLBuffer ) with \fBQwtPlotCanvas\fP\&. Performance is worse, than rendering straight to a QGLWidget, but is usually better integrated into a desktop application\&.
.RE
.PP
.PP
Definition at line 45 of file qwt_plot_glcanvas\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtPlotGLCanvas::QwtPlotGLCanvas (\fBQwtPlot\fP * plot = \fCNULL\fP)\fC [explicit]\fP"
.PP
Constructor\&.
.PP
\fBParameters\fP
.RS 4
\fIplot\fP Parent plot widget
.RE
.PP
\fBSee also\fP
.RS 4
\fBQwtPlot::setCanvas()\fP
.RE
.PP
.PP
Definition at line 56 of file qwt_plot_glcanvas\&.cpp\&.
.SS "QwtPlotGLCanvas::QwtPlotGLCanvas (const QGLFormat & format, \fBQwtPlot\fP * plot = \fCNULL\fP)\fC [explicit]\fP"
.PP
Constructor\&.
.PP
\fBParameters\fP
.RS 4
\fIformat\fP OpenGL rendering options
.br
\fIplot\fP Parent plot widget
.RE
.PP
\fBSee also\fP
.RS 4
\fBQwtPlot::setCanvas()\fP
.RE
.PP
.PP
Definition at line 69 of file qwt_plot_glcanvas\&.cpp\&.
.SH "Member Function Documentation"
.PP
.SS "QPainterPath QwtPlotGLCanvas::borderPath (const QRect & rect) const"
Calculate the painter path for a styled or rounded border
.PP
When the canvas has no styled background or rounded borders the painter path is empty\&.
.PP
\fBParameters\fP
.RS 4
\fIrect\fP Bounding rectangle of the canvas
.RE
.PP
\fBReturns\fP
.RS 4
Painter path, that can be used for clipping
.RE
.PP
.PP
Definition at line 157 of file qwt_plot_glcanvas\&.cpp\&.
.SS "bool QwtPlotGLCanvas::event (QEvent * event)\fC [override]\fP, \fC [virtual]\fP"
Qt event handler for QEvent::PolishRequest and QEvent::StyleChange
.PP
\fBParameters\fP
.RS 4
\fIevent\fP Qt Event
.RE
.PP
\fBReturns\fP
.RS 4
See QGLWidget::event()
.RE
.PP
.PP
Definition at line 110 of file qwt_plot_glcanvas\&.cpp\&.
.SS "void QwtPlotGLCanvas::paintEvent (QPaintEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Paint event
.PP
\fBParameters\fP
.RS 4
\fIevent\fP Paint event
.RE
.PP
\fBSee also\fP
.RS 4
\fBQwtPlot::drawCanvas()\fP
.RE
.PP
.PP
Definition at line 100 of file qwt_plot_glcanvas\&.cpp\&.
.SS "void QwtPlotGLCanvas::replot ()\fC [slot]\fP"
Invalidate the paint cache and repaint the canvas
.PP
\fBSee also\fP
.RS 4
invalidatePaintCache()
.RE
.PP
.PP
Definition at line 131 of file qwt_plot_glcanvas\&.cpp\&.
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.