A magnet needle for compass widgets 更多...

类 QwtCompassMagnetNeedle 继承关系图:

Public 类型
enum	Style { TriangleStyle , ThinStyle }
	Style of the needle

Public 成员函数
	QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
	Constructor

Public 成员函数继承自 QwtDialNeedle
	QwtDialNeedle ()
	Constructor

virtual	~QwtDialNeedle ()
	Destructor

virtual void	setPalette (const QPalette &)
	Set the palette for the needle

const QPalette &	palette () const
	Return the palette of the needle

void	setFlatStyle (bool)
	Set flat style

bool	flatStyle () const
	Return flat style

virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
	Draw the needle

Protected 成员函数
virtual void	drawNeedle (QPainter *, double length, QPalette::ColorGroup) const override
	Draw the needle

Protected 成员函数继承自 QwtDialNeedle
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
	Draw the knob

额外继承的成员函数
Protected 属性继承自 QwtDialNeedle
QPalette	m_palette

bool	m_flatStyle

详细描述

A magnet needle for compass widgets

A magnet needle points to two opposite directions indicating north and south. The following colors are used:

构造及析构函数说明

QwtCompassMagnetNeedle::QwtCompassMagnetNeedle	(	Style	style = `TriangleStyle`,
		const QColor &	light = `Qt::white`,
		const QColor &	dark = `Qt::red`
	)

Constructor

参数

void QwtCompassMagnetNeedle::drawNeedle	(	QPainter *	painter,
		double	length,
		QPalette::ColorGroup	colorGroup
	)		const

overrideprotectedvirtual

Draw the needle

参数

painter	Painter
length	Length of the needle
colorGroup	Color group, used for painting

该类的文档由以下文件生成: