QwtPlotAbstractCanvas(3)

📦

version 6.3.0 · 2 versions

6.3.0 · alpine 3.24 (latest)
6.2.0 · epel 10, fedora 43, fedora 44

💅 QwtPlotAbstractCanvas(3) — the glow-up base class ✨

okay bestie, welcome to the QwtPlotAbstractCanvas(3) page from the Qwt User's Guide manual 💖 this is the literal blueprint, the main-character base class that all the plot canvas girlies inherit from. let's get into it 🫶

🌸 NAME 🌸

QwtPlotAbstractCanvas — bestie, this is the base class for all types of plot canvases. every canvas has a little bit of her in it, periodt 💅

✨ SYNOPSIS ✨

#include <qwt_plot_abstract_canvas.h>

Inherited by QwtPlotAbstractGLCanvas, and QwtPlotCanvas 🧚 (yes she's the mother of the family tree)

🎀 Public Types 🎀

enum FocusIndicator { NoFocusIndicator, CanvasFocusIndicator, ItemFocusIndicator } — the focus indicator. the default setting is NoFocusIndicator. no cap.

💜 Public Member Functions 💜

QwtPlotAbstractCanvas (QWidget *canvasWidget) — Constructor ✨
virtual ~QwtPlotAbstractCanvas () — Destructor 🦋
QwtPlot * plot () — return the parent plot widget 👑
const QwtPlot * plot () const — return the parent plot widget (const edition, same energy) 👑
void setFocusIndicator (FocusIndicator)
FocusIndicator focusIndicator () const
void setBorderRadius (double)
double borderRadius () const

🌈 Protected Member Functions 🌈

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 for all type of plot canvases. she's giving foundation, she's giving infrastructure, she's literally the blueprint 💅✨

Definition at line 21 of file qwt_plot_abstract_canvas.h.

🔥 Member Enumeration Documentation 🔥

`enum QwtPlotAbstractCanvas::FocusIndicator`

Focus indicator. the default setting is NoFocusIndicator 🎯

See also: setFocusIndicator(), focusIndicator(), drawFocusIndicator()

Enumerator:

NoFocusIndicator — don't paint a focus indicator. simple, minimal, she's resting 💅
CanvasFocusIndicator — the focus is related to the complete canvas. paint the focus indicator using drawFocusIndicator() ✨
ItemFocusIndicator — the focus is related to an item (curve, point, ...) on the canvas. it's up to the application to display a focus indication using f.e. highlighting 🫶

Definition at line 30 of file qwt_plot_abstract_canvas.h.

🎀 Constructor & Destructor Documentation 🎀

`QwtPlotAbstractCanvas::QwtPlotAbstractCanvas (QWidget * canvasWidget)`

[explicit] — Constructor ✨

Parameters:

canvasWidget — plot canvas widget 💖

Definition at line 534 of file qwt_plot_abstract_canvas.cpp.

`QwtPlotAbstractCanvas::~QwtPlotAbstractCanvas () [virtual]`

Destructor 🦋 — she's logging off, respectfully.

Definition at line 546 of file qwt_plot_abstract_canvas.cpp.

💜 Member Function Documentation 💜

`double QwtPlotAbstractCanvas::borderRadius () const`

Returns: radius for the corners of the border frame 🎀

See also: setBorderRadius()

Definition at line 613 of file qwt_plot_abstract_canvas.cpp.

`QPainterPath QwtPlotAbstractCanvas::canvasBorderPath (const QRect & rect) const [protected]`

Returns: path for the canvas border 🌸

Definition at line 619 of file qwt_plot_abstract_canvas.cpp.

`QWidget * QwtPlotAbstractCanvas::canvasWidget () [protected]`

Returns: canvas widget 💅

Definition at line 872 of file qwt_plot_abstract_canvas.cpp.

`const QWidget * QwtPlotAbstractCanvas::canvasWidget () const [protected]`

Returns: canvas widget 💅 (the const twin, she ate too)

Definition at line 878 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawBackground (QPainter * painter) [protected], [virtual]`

Helper function for the derived plot canvas 🎀

Definition at line 690 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawBorder (QPainter * painter) [protected], [virtual]`

Draw the border of the canvas ✨

Parameters:

painter — Painter 🖌️

Reimplemented in QwtPlotCanvas.

Definition at line 628 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawCanvas (QPainter * painter) [protected]`

Draw the plot to the canvas 💖

Definition at line 803 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawFocusIndicator (QPainter * painter) [protected], [virtual]`

Draw the focus indication 👑

Parameters:

painter — Painter 🖌️

Definition at line 587 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawStyled (QPainter * painter, bool hackStyledBackground) [protected]`

Helper function for the derived plot canvas 🎀 (that second param is literally named hackStyledBackground, iykyk 😭)

Definition at line 744 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::drawUnstyled (QPainter * painter) [protected]`

Helper function for the derived plot canvas 🎀

Definition at line 702 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::fillBackground (QPainter * painter) [protected]`

Helper function for the derived plot canvas 🎀

Definition at line 696 of file qwt_plot_abstract_canvas.cpp.

`QwtPlotAbstractCanvas::FocusIndicator QwtPlotAbstractCanvas::focusIndicator () const`

Returns: focus indicator 🎯

See also: FocusIndicator, setFocusIndicator()

Definition at line 578 of file qwt_plot_abstract_canvas.cpp.

`QwtPlot * QwtPlotAbstractCanvas::plot ()`

Return parent plot widget 👑

Definition at line 552 of file qwt_plot_abstract_canvas.cpp.

`const QwtPlot * QwtPlotAbstractCanvas::plot () const`

Return parent plot widget 👑 (const version, still iconic)

Definition at line 558 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::setBorderRadius (double radius)`

Set the radius for the corners of the border frame 🎀

Parameters:

radius — radius of a rounded corner ✨

See also: borderRadius()

Definition at line 604 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::setFocusIndicator (FocusIndicator focusIndicator)`

Set the focus indicator 💅

See also: FocusIndicator, focusIndicator()

Definition at line 568 of file qwt_plot_abstract_canvas.cpp.

`void QwtPlotAbstractCanvas::updateStyleSheetInfo () [protected]`

Update the cached information about the current style sheet 🌈 — she's refreshing her memory, love that for her.

Definition at line 835 of file qwt_plot_abstract_canvas.cpp.

⭐ Author ⭐

Generated automatically by Doxygen for Qwt User's Guide from the source code. no cap, she was born from the source code herself 🤖💖

k bye bestie!! 💅✨ this page came straight out of the Qwt User's Guide manual — that's the QwtPlotAbstractCanvas(3) page, dated right there in her footer where the guide lives 🫶 so if u ever forget which line the constructor's on (line 534 of qwt_plot_abstract_canvas.cpp, bestie, iykyk), u know exactly where to find her 💖 mwah! 🎀

📦 where this page comes from

alpine 3.24: qwt-doc 6.3.0-r0 · custom
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on 2026-11-04: a language model's rewrite of the original, under its terms