QColorAxis 类

QColorAxis 类将色标显示为图表轴之一。 更多...

头：	#include <QColorAxis>
Since:	Qt 6.2
继承：	QAbstractAxis

• 所有成员列表，包括继承成员

特性

autoRange : bool max : qreal min : qreal

size : qreal tickCount : int

公共函数

virtual	~QColorAxis ()
bool	autoRange () const
QLinearGradient	gradient () const
qreal	max () const
qreal	min () const
void	setAutoRange (bool autoRange )
void	setGradient (const QLinearGradient & gradient )
void	setMax (qreal max )
void	setMin (qreal min )
void	setSize (const qreal size )
void	setTickCount (int count )
qreal	size () const
int	tickCount () const

信号

void	autoRangeChanged (bool autoRange )
void	maxChanged (qreal max )
void	minChanged (qreal min )
void	rangeChanged (qreal min , qreal max )
void	sizeChanged (const qreal size )
void	tickCountChanged (int tickCount )

详细描述

A color axis can be set up to show a color scale based on the passed gradient. The scale has tick marks with labels based on data passed in QXYSeries::colorby method.

特性文档编制

autoRange : bool

This property holds the property indicating if the range should be set from the list of values passed in QXYSeries::colorBy method or rather taken from the axis itself.

默认值为 true .

访问函数：

bool	autoRange () const
void	setAutoRange (bool autoRange )

通知程序信号：

void	autoRangeChanged (bool autoRange )

max : qreal

此特性保持轴的最大值。

When setting this property, the minimum value is adjusted if necessary, to ensure that the range remains valid.

访问函数：

qreal	max () const
void	setMax (qreal max )

通知程序信号：

void	maxChanged (qreal max )

min : qreal

此特性保持轴的最小值。

When setting this property, the maximum value is adjusted if necessary, to ensure that the range remains valid.

访问函数：

qreal	min () const
void	setMin (qreal min )

通知程序信号：

void	minChanged (qreal min )

size : qreal

此特性保持色标的大小。

Depending on the alignment the value indicates either width or height.

访问函数：

qreal	size () const
void	setSize (const qreal size )

通知程序信号：

void	sizeChanged (const qreal size )

tickCount : int

This property holds the number of tick marks on the axis. This indicates how many grid lines are drawn on the chart if QColorAxis::gridVisible is equal to true . The default value is 5, and the number cannot be less than 2.

注意： Grid lines are intentionally invisible by default in QColorAxis as this type of axis does not represent geometric values.

访问函数：

int	tickCount () const
void	setTickCount (int count )

通知程序信号：

void	tickCountChanged (int tickCount )

成员函数文档编制

[virtual noexcept] QColorAxis:: ~QColorAxis ()

销毁对象。

[signal] void QColorAxis:: autoRangeChanged ( bool autoRange )

This signal is emitted when the auto range mode, specified by autoRange ，改变。

注意： 通知程序信号对于特性 autoRange .

QLinearGradient QColorAxis:: gradient () const

Returns the gradient currently used on the color scale.

注意： If the axis is attached to a series, the gradient is also used by the QXYSeries::colorBy 方法。

另请参阅 setGradient .

[signal] void QColorAxis:: maxChanged ( qreal max )

This signal is emitted when the maximum value of the axis, specified by max ，改变。

注意： 通知程序信号对于特性 max .

[signal] void QColorAxis:: minChanged ( qreal min )

This signal is emitted when the minimum value of the axis, specified by min ，改变。

注意： 通知程序信号对于特性 min .

[signal] void QColorAxis:: rangeChanged ( qreal min , qreal max )

This signal is emitted when the minimum or maximum value of the axis, specified by min and max ，改变。

void QColorAxis:: setGradient (const QLinearGradient & gradient )

Sets the gradient on the color scale to gradient .

注意： If the axis is attached to a series, the gradient is also used by the QXYSeries::colorBy 方法。

另请参阅 gradient .

[signal] void QColorAxis:: tickCountChanged ( int tickCount )

This signal is emitted when the number of tick marks on the axis, specified by tickCount ，改变。

注意： 通知程序信号对于特性 tickCount .

内容

• 特性

• 公共函数

• 信号

• 详细描述