QwtPlotAbstractGLCanvas - Man Page

Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas.

Synopsis

#include <qwt_plot_abstract_canvas.h>

Inherits QwtPlotAbstractCanvas.

Inherited by QwtPlotGLCanvas, and QwtPlotOpenGLCanvas.

Public Types

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

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.

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 (QWidget * canvasWidget) [explicit]

Constructor.

Parameters: canvasWidget plot canvas widget

Definition at line 904 of file qwt_plot_abstract_canvas.cpp.

Member Function Documentation

QRect QwtPlotAbstractGLCanvas::frameRect () const

Returns: The rectangle where the frame is drawn in.

Definition at line 1105 of file qwt_plot_abstract_canvas.cpp.

QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow () const

Returns: Frame shadow
See also: setFrameShadow(), QFrame::setFrameShadow()

Definition at line 1000 of file qwt_plot_abstract_canvas.cpp.

QFrame::Shape QwtPlotAbstractGLCanvas::frameShape () const

Returns: Frame shape
See also: setFrameShape(), QFrame::frameShape()

Definition at line 1020 of file qwt_plot_abstract_canvas.cpp.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Author

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Info

Sun Jul 18 2021 Version 6.2.0 Qwt User's Guide