Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas. More...

#include <qwt_plot_abstract_canvas.h>

Inheritance diagram for QwtPlotAbstractGLCanvas:

[legend]

Classes
class	PrivateData

Public Types
enum	PaintAttribute { BackingStore = 1, ImmediatePaint = 8 }
	Paint attributes. More...

Public Types inherited from QwtPlotAbstractCanvas
enum	FocusIndicator { NoFocusIndicator, CanvasFocusIndicator, ItemFocusIndicator }
	Focus indicator The default setting is NoFocusIndicator. More...

Public Member Functions
QRect	frameRect () const

QFrame::Shadow	frameShadow () const

QFrame::Shape	frameShape () const

int	frameStyle () const

int	frameWidth () const

virtual void	invalidateBackingStore ()=0
	Invalidate the internal backing store. More...

int	lineWidth () const

int	midLineWidth () const

	QwtPlotAbstractGLCanvas (QWidget *canvasWidget)
	Paint attributes. More...

void	setFrameShadow (QFrame::Shadow)

void	setFrameShape (QFrame::Shape)

void	setFrameStyle (int style)

void	setLineWidth (int)

void	setMidLineWidth (int)

void	setPaintAttribute (PaintAttribute, bool on=true)
	Changing the paint attributes. More...

bool	testPaintAttribute (PaintAttribute) const

virtual	~QwtPlotAbstractGLCanvas ()
	Destructor. More...

Public Member Functions inherited from QwtPlotAbstractCanvas
double	borderRadius () const

FocusIndicator	focusIndicator () const

QwtPlot *	plot ()
	Return parent plot widget. More...

const QwtPlot *	plot () const

	QwtPlotAbstractCanvas (QWidget *canvasWidget)
	Constructor. More...

void	setBorderRadius (double)

void	setFocusIndicator (FocusIndicator)

virtual	~QwtPlotAbstractCanvas ()
	Destructor. More...

Protected Member Functions
void	draw (QPainter *)
	Helper function for the derived plot canvas. More...

void	replot ()

Protected Member Functions inherited from QwtPlotAbstractCanvas
QPainterPath	canvasBorderPath (const QRect &rect) const

QWidget *	canvasWidget ()

const QWidget *	canvasWidget () const

virtual void	drawBackground (QPainter *)
	Helper function for the derived plot canvas. More...

virtual void	drawBorder (QPainter *)

void	drawCanvas (QPainter *)
	Draw the plot to the canvas. More...

virtual void	drawFocusIndicator (QPainter *)

void	drawStyled (QPainter *, bool)
	Helper function for the derived plot canvas. More...

void	drawUnstyled (QPainter *)
	Helper function for the derived plot canvas. More...

void	fillBackground (QPainter *)
	Helper function for the derived plot canvas. More...

void	updateStyleSheetInfo ()
	Update the cached information about the current style sheet. More...

Private Member Functions
virtual void	clearBackingStore ()=0

Private Attributes
PrivateData *	m_data

Detailed Description

Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas.

Definition at line 87 of file qwt_plot_abstract_canvas.h.

Member Enumeration Documentation

◆ PaintAttribute

enum QwtPlotAbstractGLCanvas::PaintAttribute

Paint attributes.

The default setting enables BackingStore and Opaque.

See also: setPaintAttribute(), testPaintAttribute()

Enumerator

BackingStore

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 QwtPlotDirectPainter ).

See also: backingStore(), invalidateBackingStore()

ImmediatePaint

When ImmediatePaint is set replot() calls repaint() instead of update().

See also: replot(), QWidget::repaint(), QWidget::update()

Definition at line 97 of file qwt_plot_abstract_canvas.h.

Constructor & Destructor Documentation

◆ QwtPlotAbstractGLCanvas()

QwtPlotAbstractGLCanvas::QwtPlotAbstractGLCanvas ( QWidget * canvasWidget )

explicit

Paint attributes.

Constructor.

Parameters

canvasWidget plot canvas widget

Definition at line 904 of file qwt_plot_abstract_canvas.cpp.

◆ ~QwtPlotAbstractGLCanvas()

QwtPlotAbstractGLCanvas::~QwtPlotAbstractGLCanvas ( )

virtual

Destructor.

Definition at line 914 of file qwt_plot_abstract_canvas.cpp.

Member Function Documentation

◆ clearBackingStore()

virtual void QwtPlotAbstractGLCanvas::clearBackingStore ( )

privatepure virtual

Implemented in QwtPlotGLCanvas, and QwtPlotOpenGLCanvas.

◆ draw()

void QwtPlotAbstractGLCanvas::draw ( QPainter * painter )

protected

Helper function for the derived plot canvas.

Definition at line 1112 of file qwt_plot_abstract_canvas.cpp.

◆ frameRect()

QRect QwtPlotAbstractGLCanvas::frameRect ( ) const

Returns: The rectangle where the frame is drawn in.

Definition at line 1105 of file qwt_plot_abstract_canvas.cpp.

◆ frameShadow()

QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow ( ) const

Returns: Frame shadow

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

Definition at line 1000 of file qwt_plot_abstract_canvas.cpp.

◆ frameShape()

QFrame::Shape QwtPlotAbstractGLCanvas::frameShape ( ) const

Returns: Frame shape

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

Definition at line 1020 of file qwt_plot_abstract_canvas.cpp.

◆ frameStyle()

int QwtPlotAbstractGLCanvas::frameStyle ( ) const

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

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

Definition at line 980 of file qwt_plot_abstract_canvas.cpp.

◆ frameWidth()

int QwtPlotAbstractGLCanvas::frameWidth ( ) const

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

Definition at line 1084 of file qwt_plot_abstract_canvas.cpp.

◆ invalidateBackingStore()

virtual void QwtPlotAbstractGLCanvas::invalidateBackingStore ( )

pure virtual

Invalidate the internal backing store.

Implemented in QwtPlotGLCanvas, and QwtPlotOpenGLCanvas.

◆ lineWidth()

int QwtPlotAbstractGLCanvas::lineWidth ( ) const

Returns: Line width of the frame

See also: setLineWidth(), midLineWidth()

Definition at line 1048 of file qwt_plot_abstract_canvas.cpp.

◆ midLineWidth()

int QwtPlotAbstractGLCanvas::midLineWidth ( ) const

Returns: Midline width of the frame

See also: setMidLineWidth(), lineWidth()

Definition at line 1076 of file qwt_plot_abstract_canvas.cpp.

◆ replot()

void QwtPlotAbstractGLCanvas::replot ( )

protected

Invalidate the paint cache and repaint the canvas

See also: invalidatePaintCache()

Definition at line 1093 of file qwt_plot_abstract_canvas.cpp.

◆ setFrameShadow()

void QwtPlotAbstractGLCanvas::setFrameShadow ( QFrame::Shadow shadow )

Set the frame shadow

Parameters

shadow Frame shadow

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

Definition at line 991 of file qwt_plot_abstract_canvas.cpp.

◆ setFrameShape()

void QwtPlotAbstractGLCanvas::setFrameShape ( QFrame::Shape shape )

Set the frame shape

Parameters

shape Frame shape

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

Definition at line 1011 of file qwt_plot_abstract_canvas.cpp.

◆ setFrameStyle()

void QwtPlotAbstractGLCanvas::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 965 of file qwt_plot_abstract_canvas.cpp.

◆ setLineWidth()

void QwtPlotAbstractGLCanvas::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 1033 of file qwt_plot_abstract_canvas.cpp.

◆ setMidLineWidth()

void QwtPlotAbstractGLCanvas::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 1061 of file qwt_plot_abstract_canvas.cpp.

◆ setPaintAttribute()

void QwtPlotAbstractGLCanvas::setPaintAttribute	(	PaintAttribute	attribute,
		bool	on = `true`
	)

Changing the paint attributes.

Parameters

attribute	Paint attribute
on	On/Off

See also: testPaintAttribute()

Definition at line 927 of file qwt_plot_abstract_canvas.cpp.

◆ testPaintAttribute()

bool QwtPlotAbstractGLCanvas::testPaintAttribute ( PaintAttribute attribute ) const

Test whether a paint attribute is enabled

Parameters

attribute Paint attribute

Returns: true, when attribute is enabled

See also: setPaintAttribute()

Definition at line 952 of file qwt_plot_abstract_canvas.cpp.

Member Data Documentation

◆ m_data

PrivateData* QwtPlotAbstractGLCanvas::m_data

private

Definition at line 158 of file qwt_plot_abstract_canvas.h.

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

Classes

Public Types

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ PaintAttribute

Constructor & Destructor Documentation

◆ QwtPlotAbstractGLCanvas()

◆ ~QwtPlotAbstractGLCanvas()

Member Function Documentation

◆ clearBackingStore()

◆ draw()

◆ frameRect()

◆ frameShadow()

◆ frameShape()

◆ frameStyle()

◆ frameWidth()

◆ invalidateBackingStore()

◆ lineWidth()

◆ midLineWidth()

◆ replot()

◆ setFrameShadow()

◆ setFrameShape()

◆ setFrameStyle()

◆ setLineWidth()

◆ setMidLineWidth()

◆ setPaintAttribute()

◆ testPaintAttribute()

Member Data Documentation

◆ m_data