QwtCompassRose(3)

📦
version 6.3.0 · 6 versions
, in alpine 3.24

💅 QwtCompassRose(3) 💅

Okay bestie, so this is the manual page for QwtCompassRose from the Qwt User's Guide. It's giving abstract base class energy and honestly? Iconic.

✨ NAME ✨

QwtCompassRose — the abstract base class for a compass rose. Like, it's the blueprint, not the actual rose. You can't instantiate it directly, no cap. It's the main character that lets other classes (like QwtSimpleCompassRose) do the actual drawing. 🎀

🦋 SYNOPSIS 🦋

So you gotta include this header first, bestie:

#include <qwt_compass_rose.h>

And guess what? It's inherited by QwtSimpleCompassRose. So like, that class is the one that actually shows up to the party. 💁‍♀️

🌸 Public Member Functions 🌸

  • QwtCompassRose() — Constructor. It exists. It's a thing. Slay. ✨
  • virtual ~QwtCompassRose() — Destructor. Virtual, so it cleans up properly. Very demure, very mindful. 🫶
  • virtual void setPalette(const QPalette &) — Assigns a palette. You're literally giving it a color vibe check. 🎨
  • const QPalette & palette() const — Returns the current palette. It's giving accessor realness. 👑
  • virtual void draw(QPainter *painter, const QPointF &center, double radius, double north, QPalette::ColorGroup colorGroup = QPalette::Active) const = 0 — This is the pure virtual one. Like, you cannot call it on this class directly because it's abstract. Subclasses (looking at you, QwtSimpleCompassRose) have to implement it. Periodt. 💀

🔥 Detailed Description 🔥

Okay so QwtCompassRose is the abstract base class for a compass rose. That means it's the template, the vibe, the blueprint — but it doesn't actually draw anything itself. You need a subclass to do the real work. It's giving "I'm the idea, you're the execution" energy. 💅

Definition at line 21 of file qwt_compass_rose.h. So like, that's where it lives. Remember that for the exam. 📝

🎀 Constructor & Destructor Documentation 🎀

💖 QwtCompassRose::QwtCompassRose() 💖

Constructor. It constructs. That's it. That's the tweet.

Definition at line 34 of file qwt_compass_rose.cpp.

💖 QwtCompassRose::~QwtCompassRose() [virtual] 💖

Destructor. It's virtual, so it's polite and cleans up after subclasses. No memory leaks on my watch, bestie. 🧚

Definition at line 39 of file qwt_compass_rose.cpp.

🌈 Member Function Documentation 🌈

⭐ virtual void QwtCompassRose::draw(QPainter *painter, const QPointF &center, double radius, double north, QPalette::ColorGroup colorGroup = QPalette::Active) const [pure virtual] ⭐

Draw the rose. But like — it's pure virtual, so this class doesn't actually implement it. You gotta override it in a subclass. It's giving "figure it out yourself" but in a cute way. 💁‍♀️

Parameters:

  • painter — Painter. Like, the thing that does the drawing. 🖌️
  • center — Center point. Where the rose is centered. Duh. 📍
  • radius — Radius of the rose. How big it is. Size matters. 💅
  • north — Position. Where north is pointing. Compass things. 🧭
  • colorGroup — Color group. Defaults to QPalette::Active. 🎨
Implemented in QwtSimpleCompassRose. So that's the class that actually does the thing. 👑

⭐ const QPalette & QwtCompassRose::palette() const ⭐

Returns the current palette. It's an accessor. It gives you the colors. That's it. 😌

Returns: Current palette.
Definition at line 50 of file qwt_compass_rose.cpp.

⭐ void QwtCompassRose::setPalette(const QPalette &p) [virtual] ⭐

Assign a palette. You're setting the colors. It's virtual so subclasses can override it if they want to be extra. 🎨✨

Definition at line 44 of file qwt_compass_rose.cpp.

👑 Author 👑

Generated automatically by Doxygen for Qwt User's Guide from the source code. So like, a robot wrote this. But I'm here to make it make sense, bestie. 🫶

Alright, that's the whole vibe. This page is from the Qwt User's Guide, and it's dated... well, the footer says QwtCompassRose(3) on the left and Qwt User's Guide on the right. So like, it's official. Periodt. 💖✨

Stay slay, stay abstract, and always override your pure virtuals. Mwah! 💋🌈

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