QwtPlotAbstractGLCanvas(3)

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version 6.3.0 · 2 versions
, in alpine 3.24

💅 QwtPlotAbstractGLCanvas(3) 💅

from the Library Functions Manual — yes bestie, we're in the man pages now, and this one is giving base-class main character energy

💖 NAME

QwtPlotAbstractGLCanvas — 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.

💜 Public Types inherited from QwtPlotAbstractCanvas

  • enum FocusIndicator { NoFocusIndicator, CanvasFocusIndicator, ItemFocusIndicator } — Focus indicator. The default setting is NoFocusIndicator.

🦋 Public Member Functions

  • QwtPlotAbstractGLCanvas (QWidget *canvasWidget) — Constructor.
  • virtual ~QwtPlotAbstractGLCanvas () — Destructor.
  • void setPaintAttribute (PaintAttribute, bool on=true) — Changing the paint attributes.
  • bool testPaintAttribute (PaintAttribute) const — Test whether a paint attribute is enabled.
  • void setFrameStyle (int style) — Set the frame style.
  • int frameStyle () const — Get the frame style.
  • void setFrameShadow (QFrame::Shadow) — Set the frame shadow.
  • QFrame::Shadow frameShadow () const — Get the frame shadow.
  • void setFrameShape (QFrame::Shape) — Set the frame shape.
  • QFrame::Shape frameShape () const — Get the frame shape.
  • void setLineWidth (int) — Set the frame line width.
  • int lineWidth () const — Get the line width of the frame.
  • void setMidLineWidth (int) — Set the frame mid line width.
  • int midLineWidth () const — Get the midline width of the frame.
  • int frameWidth () const — Get the frame width.
  • QRect frameRect () const — Get the rectangle where the frame is drawn in.
  • 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) — Set the focus indicator.
  • FocusIndicator focusIndicator () const — Get the focus indicator.
  • void setBorderRadius (double) — Set the border radius.
  • double borderRadius () const — Get the border radius.

🔥 Protected Member Functions

  • void replot () — Invalidate the paint cache and repaint the canvas.
  • void draw (QPainter *) — Helper function for the derived plot canvas.

🌈 Protected Member Functions inherited from QwtPlotAbstractCanvas

  • QWidget * canvasWidget () — Get the canvas widget.
  • const QWidget * canvasWidget () const — Get the canvas widget.
  • virtual void drawFocusIndicator (QPainter *) — Draw the focus indicator.
  • virtual void drawBorder (QPainter *) — Draw the border.
  • 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 — Get the canvas border path.
  • 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

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

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 (QWidget * canvasWidget) [explicit]

Constructor.

  • canvasWidget — plot canvas widget

Definition at line 904 of file qwt_plot_abstract_canvas.cpp.

QwtPlotAbstractGLCanvas::~QwtPlotAbstractGLCanvas () [virtual]

Destructor.

Definition at line 914 of file qwt_plot_abstract_canvas.cpp.

🔥 MEMBER FUNCTION DOCUMENTATION

void QwtPlotAbstractGLCanvas::draw (QPainter * painter) [protected]

Helper function for the derived plot canvas.

Definition at line 1112 of file qwt_plot_abstract_canvas.cpp.

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.

virtual void QwtPlotAbstractGLCanvas::invalidateBackingStore () [pure virtual]

Invalidate the internal backing store.

Implemented in QwtPlotGLCanvas, and QwtPlotOpenGLCanvas.

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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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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