Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas. More...

#include <qwt_plot_abstract_canvas.h>

Inheritance diagram for QwtPlotAbstractGLCanvas:

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

typedef QFlags< PaintAttribute >	PaintAttributes
	Paint attributes.

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

Public Member Functions
	QwtPlotAbstractGLCanvas (QWidget *canvasWidget)
	Constructor.

virtual	~QwtPlotAbstractGLCanvas ()
	Destructor.

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

bool	testPaintAttribute (PaintAttribute) const

void	setFrameStyle (int style)

int	frameStyle () const

void	setFrameShadow (QFrame::Shadow)

QFrame::Shadow	frameShadow () const

void	setFrameShape (QFrame::Shape)

QFrame::Shape	frameShape () const

void	setLineWidth (int)

int	lineWidth () const

void	setMidLineWidth (int)

int	midLineWidth () const

int	frameWidth () const

QRect	frameRect () const

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

Public Member Functions inherited from QwtPlotAbstractCanvas
	QwtPlotAbstractCanvas (QWidget *canvasWidget)
	Constructor.

virtual	~QwtPlotAbstractCanvas ()
	Destructor.

QwtPlot *	plot ()
	Return parent plot widget.

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

void	setFocusIndicator (FocusIndicator)

FocusIndicator	focusIndicator () const

void	setBorderRadius (double)

double	borderRadius () const

Protected Member Functions
void	replot ()

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

Protected Member Functions inherited from QwtPlotAbstractCanvas
QWidget *	canvasWidget ()

const QWidget *	canvasWidget () const

virtual void	drawFocusIndicator (QPainter *)

virtual void	drawBorder (QPainter *)

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

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

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

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

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

QPainterPath	canvasBorderPath (const QRect &rect) const

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

Detailed Description

Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas.

Definition at line 87 of file qwt_plot_abstract_canvas.h.

Member Typedef Documentation

◆ PaintAttributes

typedef QFlags<PaintAttribute > QwtPlotAbstractGLCanvas::PaintAttributes

Paint attributes.

An ORed combination of PaintAttribute values.

Definition at line 122 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 ).