Public Types¶

enum PaintAttribute { BackingStore = 1, ImmediatePaint = 8 }
Paint attributes. typedef QFlags< PaintAttribute > PaintAttributes
Paint attributes.

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.

Protected Member Functions¶

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

typedef QFlags<PaintAttribute > QwtPlotAbstractGLCanvas::PaintAttributes¶

Paint attributes. An ORed combination of PaintAttribute values.

Definition at line 122 of file qwt_plot_abstract_canvas.h.

enum QwtPlotAbstractGLCanvas::PaintAttribute¶

Paint attributes. The default setting enables BackingStore and Opaque.

See also

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

ImmediatePaint

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

See also

Definition at line 97 of file qwt_plot_abstract_canvas.h.

QwtPlotAbstractGLCanvas::QwtPlotAbstractGLCanvas (QWidget * canvasWidget) [explicit]¶

Constructor.

Parameters

Definition at line 904 of file qwt_plot_abstract_canvas.cpp.

QRect QwtPlotAbstractGLCanvas::frameRect () const¶

Returns

Definition at line 1105 of file qwt_plot_abstract_canvas.cpp.

QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow () const¶

Returns

See also

Definition at line 1000 of file qwt_plot_abstract_canvas.cpp.

QFrame::Shape QwtPlotAbstractGLCanvas::frameShape () const¶

Returns

See also

Definition at line 1020 of file qwt_plot_abstract_canvas.cpp.

int QwtPlotAbstractGLCanvas::frameStyle () const¶

Returns

See also

Definition at line 980 of file qwt_plot_abstract_canvas.cpp.

int QwtPlotAbstractGLCanvas::frameWidth () const¶

Returns

Definition at line 1084 of file qwt_plot_abstract_canvas.cpp.

int QwtPlotAbstractGLCanvas::lineWidth () const¶

Returns

See also

Definition at line 1048 of file qwt_plot_abstract_canvas.cpp.

int QwtPlotAbstractGLCanvas::midLineWidth () const¶

Returns

See also

Definition at line 1076 of file qwt_plot_abstract_canvas.cpp.

void QwtPlotAbstractGLCanvas::replot () [protected]¶

Invalidate the paint cache and repaint the canvas

See also

Definition at line 1093 of file qwt_plot_abstract_canvas.cpp.

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

Set the frame shadow

Parameters

See also

Definition at line 991 of file qwt_plot_abstract_canvas.cpp.

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

Set the frame shape

Parameters

See also

Definition at line 1011 of file qwt_plot_abstract_canvas.cpp.

void QwtPlotAbstractGLCanvas::setFrameStyle (int style)¶

Set the frame style

Parameters

See also

Definition at line 965 of file qwt_plot_abstract_canvas.cpp.

void QwtPlotAbstractGLCanvas::setLineWidth (int width)¶

Set the frame line width

The default line width is 2 pixels.

Parameters

See also

Definition at line 1033 of file qwt_plot_abstract_canvas.cpp.

void QwtPlotAbstractGLCanvas::setMidLineWidth (int width)¶

Set the frame mid line width

The default midline width is 0 pixels.

Parameters

See also

Definition at line 1061 of file qwt_plot_abstract_canvas.cpp.

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

Changing the paint attributes.

Parameters

See also

Definition at line 927 of file qwt_plot_abstract_canvas.cpp.

bool QwtPlotAbstractGLCanvas::testPaintAttribute (PaintAttribute attribute) const¶

Test whether a paint attribute is enabled

Parameters

Returns

See also

Definition at line 952 of file qwt_plot_abstract_canvas.cpp.