/usr/include/qwt/qwt_plot_glcanvas.h is in libqwt-headers 6.1.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_PLOT_GLCANVAS_H
#define QWT_PLOT_GLCANVAS_H
#include "qwt_global.h"
#include <qframe.h>
#include <qgl.h>
class QwtPlot;
/*!
\brief An alternative canvas for a QwtPlot derived from QGLWidget
QwtPlotGLCanvas implements the very basics to act as canvas
inside of a QwtPlot widget. It might be extended to a full
featured alternative to QwtPlotCanvas in a future version of Qwt.
Even if QwtPlotGLCanvas is not derived from QFrame it imitates
its API. When using style sheets it supports the box model - beside
backgrounds with rounded borders.
\sa QwtPlot::setCanvas(), QwtPlotCanvas
\note You might want to use the QPaintEngine::OpenGL paint engine
( see QGL::setPreferredPaintEngine() ). On a Linux test system
QPaintEngine::OpenGL2 shows very basic problems ( wrong
geometries of rectangles ) but also more advanced stuff
like antialiasing doesn't work.
\note Another way to introduce OpenGL rendering to Qwt
is to use QGLPixelBuffer or QGLFramebufferObject. Both
type of buffers can be converted into a QImage and
used in combination with a regular QwtPlotCanvas.
*/
class QWT_EXPORT QwtPlotGLCanvas: public QGLWidget
{
Q_OBJECT
Q_ENUMS( Shape Shadow )
Q_PROPERTY( Shadow frameShadow READ frameShadow WRITE setFrameShadow )
Q_PROPERTY( Shape frameShape READ frameShape WRITE setFrameShape )
Q_PROPERTY( int lineWidth READ lineWidth WRITE setLineWidth )
Q_PROPERTY( int midLineWidth READ midLineWidth WRITE setMidLineWidth )
Q_PROPERTY( int frameWidth READ frameWidth )
Q_PROPERTY( QRect frameRect READ frameRect DESIGNABLE false )
public:
/*!
\brief Frame shadow
Unfortunately it is not possible to use QFrame::Shadow
as a property of a widget that is not derived from QFrame.
The following enum is made for the designer only. It is safe
to use QFrame::Shadow instead.
*/
enum Shadow
{
//! QFrame::Plain
Plain = QFrame::Plain,
//! QFrame::Raised
Raised = QFrame::Raised,
//! QFrame::Sunken
Sunken = QFrame::Sunken
};
/*!
\brief Frame shape
Unfortunately it is not possible to use QFrame::Shape
as a property of a widget that is not derived from QFrame.
The following enum is made for the designer only. It is safe
to use QFrame::Shadow instead.
\note QFrame::StyledPanel and QFrame::WinPanel are unsuported
and will be displayed as QFrame::Panel.
*/
enum Shape
{
NoFrame = QFrame::NoFrame,
Box = QFrame::Box,
Panel = QFrame::Panel
};
explicit QwtPlotGLCanvas( QwtPlot * = NULL );
virtual ~QwtPlotGLCanvas();
void setFrameStyle( int style );
int frameStyle() const;
void setFrameShadow( Shadow );
Shadow frameShadow() const;
void setFrameShape( Shape );
Shape frameShape() const;
void setLineWidth( int );
int lineWidth() const;
void setMidLineWidth( int );
int midLineWidth() const;
int frameWidth() const;
QRect frameRect() const;
Q_INVOKABLE QPainterPath borderPath( const QRect & ) const;
virtual bool event( QEvent * );
public Q_SLOTS:
void replot();
protected:
virtual void paintEvent( QPaintEvent * );
virtual void drawBackground( QPainter * );
virtual void drawBorder( QPainter * );
virtual void drawItems( QPainter * );
private:
class PrivateData;
PrivateData *d_data;
};
#endif
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