An alternative canvas for a QwtPlot derived from QGLWidget. More...

#include <qwt_plot_glcanvas.h>

Classes
class	PrivateData
Public Types
enum	Shadow { Plain = QFrame::Plain, Raised = QFrame::Raised, Sunken = QFrame::Sunken }
	Frame shadow. More...
enum	Shape { NoFrame = QFrame::NoFrame, Box = QFrame::Box, Panel = QFrame::Panel }
	Frame shape. More...
Public Slots
void	replot ()
	Calls repaint()
Public Member Functions
Q_INVOKABLE QPainterPath	borderPath (const QRect &) const
virtual bool	event (QEvent *)
QRect	frameRect () const
Shadow	frameShadow () const
Shape	frameShape () const
int	frameStyle () const
int	frameWidth () const
int	lineWidth () const
int	midLineWidth () const
	QwtPlotGLCanvas (QwtPlot *=NULL)
	Constructor.
void	setFrameShadow (Shadow)
void	setFrameShape (Shape)
void	setFrameStyle (int style)
void	setLineWidth (int)
void	setMidLineWidth (int)
virtual	~QwtPlotGLCanvas ()
	Destructor.
Protected Member Functions
virtual void	drawBackground (QPainter *)
virtual void	drawBorder (QPainter *)
virtual void	drawItems (QPainter *)
virtual void	paintEvent (QPaintEvent *)
Properties
QRect	frameRect
Shadow	frameShadow
Shape	frameShape
int	frameWidth
int	lineWidth
int	midLineWidth
Private Attributes
PrivateData *	d_data

Detailed Description

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.

See also:: QwtPlot::setCanvas(), QwtPlotCanvas

Note:: 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.

Definition at line 37 of file qwt_plot_glcanvas.h.

Member Enumeration Documentation

enum QwtPlotGLCanvas::Shadow

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.

Enumerator:

Plain	QFrame::Plain.
Raised	QFrame::Raised.
Sunken	QFrame::Sunken.

Definition at line 59 of file qwt_plot_glcanvas.h.

enum QwtPlotGLCanvas::Shape

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.

Enumerator:

NoFrame
Box
Panel

Definition at line 82 of file qwt_plot_glcanvas.h.

Constructor & Destructor Documentation

QwtPlotGLCanvas::QwtPlotGLCanvas ( QwtPlot * plot = NULL ) [explicit]

Constructor.

Parameters:

plot	Parent plot widget

See also:: QwtPlot::setCanvas()

Definition at line 74 of file qwt_plot_glcanvas.cpp.

QwtPlotGLCanvas::~QwtPlotGLCanvas ( ) [virtual]

Destructor.

Definition at line 88 of file qwt_plot_glcanvas.cpp.

Member Function Documentation

QPainterPath QwtPlotGLCanvas::borderPath ( const QRect & rect ) const

Returns:: Empty path

Definition at line 366 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::drawBackground ( QPainter * painter ) [protected, virtual]

Draw the background of the canvas

Parameters:

painter Painter

Definition at line 299 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::drawBorder ( QPainter * painter ) [protected, virtual]

Draw the border of the canvas

Parameters:

painter Painter

Definition at line 331 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::drawItems ( QPainter * painter ) [protected, virtual]

Draw the plot items

Parameters:

painter Painter

See also:: QwtPlot::drawCanvas()

Definition at line 282 of file qwt_plot_glcanvas.cpp.

bool QwtPlotGLCanvas::event ( QEvent * event ) [virtual]

Qt event handler for QEvent::PolishRequest and QEvent::StyleChange

Parameters:

event Qt Event

Returns:: See QGLWidget::event()

Definition at line 259 of file qwt_plot_glcanvas.cpp.

QRect QwtPlotGLCanvas::frameRect ( ) const

Shadow QwtPlotGLCanvas::frameShadow ( ) const

Shape QwtPlotGLCanvas::frameShape ( ) const

int QwtPlotGLCanvas::frameStyle ( ) const

Returns:: The bitwise OR between a frameShape() and a frameShadow()

See also:: setFrameStyle(), QFrame::frameStyle()

Definition at line 116 of file qwt_plot_glcanvas.cpp.

int QwtPlotGLCanvas::frameWidth ( ) const

int QwtPlotGLCanvas::lineWidth ( ) const

int QwtPlotGLCanvas::midLineWidth ( ) const

void QwtPlotGLCanvas::paintEvent ( QPaintEvent * event ) [protected, virtual]

Paint event

Parameters:

event Paint event

See also:: QwtPlot::drawCanvas()

Definition at line 231 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::replot ( ) [slot]

Calls repaint()

Definition at line 358 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::setFrameShadow ( Shadow shadow )

Set the frame shadow

Parameters:

shadow Frame shadow

See also:: frameShadow(), setFrameShape(), QFrame::setFrameShadow()

Definition at line 127 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::setFrameShape ( Shape shape )

Set the frame shape

Parameters:

shape Frame shape

See also:: frameShape(), setFrameShadow(), QFrame::frameShape()

Definition at line 147 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::setFrameStyle ( int style )

Set the frame style

Parameters:

style The bitwise OR between a shape and a shadow.

See also:: frameStyle(), QFrame::setFrameStyle(), setFrameShadow(), setFrameShape()

Definition at line 101 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::setLineWidth ( int width )

Set the frame line width

The default line width is 2 pixels.

Parameters:

width Line width of the frame

See also:: lineWidth(), setMidLineWidth()

Definition at line 169 of file qwt_plot_glcanvas.cpp.

void QwtPlotGLCanvas::setMidLineWidth ( int width )

Set the frame mid line width

The default midline width is 0 pixels.

Parameters:

width Midline width of the frame

See also:: midLineWidth(), setLineWidth()

Definition at line 197 of file qwt_plot_glcanvas.cpp.

Member Data Documentation

PrivateData* QwtPlotGLCanvas::d_data [private]

Definition at line 126 of file qwt_plot_glcanvas.h.

Property Documentation

QRect QwtPlotGLCanvas::frameRect [read]

Returns:: The rectangle where the frame is drawn in.

Definition at line 48 of file qwt_plot_glcanvas.h.

QwtPlotGLCanvas::Shadow QwtPlotGLCanvas::frameShadow [read, write]

Returns:: Frame shadow

See also:: setFrameShadow(), QFrame::setFrameShadow()

Definition at line 43 of file qwt_plot_glcanvas.h.

QwtPlotGLCanvas::Shape QwtPlotGLCanvas::frameShape [read, write]

Returns:: Frame shape

See also:: setFrameShape(), QFrame::frameShape()

Definition at line 44 of file qwt_plot_glcanvas.h.

int QwtPlotGLCanvas::frameWidth [read]

Returns:: Frame width depending on the style, line width and midline width.

Definition at line 47 of file qwt_plot_glcanvas.h.

int QwtPlotGLCanvas::lineWidth [read, write]

Returns:: Line width of the frame

See also:: setLineWidth(), midLineWidth()

Definition at line 45 of file qwt_plot_glcanvas.h.

int QwtPlotGLCanvas::midLineWidth [read, write]

Returns:: Midline width of the frame

See also:: setMidLineWidth(), lineWidth()

Definition at line 46 of file qwt_plot_glcanvas.h.

The documentation for this class was generated from the following files:

Classes

Public Types

Public Slots

Public Member Functions

Protected Member Functions

Properties

Private Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

Property Documentation