內容

• 特性
• 公共函數
• 信號
• 靜態公共成員
• 詳細描述

QValue3DAxis Class

The QValue3DAxis class manipulates an axis of a graph. 更多...

頭：	#include <QValue3DAxis>
Since:	QtDataVisualization 1.0
實例化：	ValueAxis3D
繼承：	QAbstract3DAxis

• 所有成員列錶，包括繼承成員
• 過時成員

特性

formatter : QValue3DAxisFormatter* labelFormat : QString reversed : bool

segmentCount : int subSegmentCount : int

• 10 properties inherited from QAbstract3DAxis
• 1 特性繼承自 QObject

公共函數

	QValue3DAxis (QObject * parent = nullptr)
virtual	~QValue3DAxis ()
QValue3DAxisFormatter *	formatter () const
QString	labelFormat () const
bool	reversed () const
int	segmentCount () const
void	setFormatter (QValue3DAxisFormatter * formatter )
void	setLabelFormat (const QString & format )
void	setReversed (bool enable )
void	setSegmentCount (int count )
void	setSubSegmentCount (int count )
int	subSegmentCount () const

• 19 公共函數繼承自 QAbstract3DAxis
• 31 公共函數繼承自 QObject

信號

void	formatterChanged (QValue3DAxisFormatter * formatter )
void	labelFormatChanged (const QString & format )
void	reversedChanged (bool enable )
void	segmentCountChanged (int count )
void	subSegmentCountChanged (int count )

• 10 信號繼承自 QAbstract3DAxis
• 2 信號繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

額外繼承成員

• 1 公共槽繼承自 QObject
• 9 保護函數繼承自 QObject

詳細描述

The QValue3DAxis class manipulates an axis of a graph.

A value axis can be given a range of values and segment and subsegment counts to divide the range into.

Labels are drawn between each segment. Grid lines are drawn between each segment and each subsegment.

注意： If visible, there will always be at least two grid lines and labels indicating the minimum and the maximum values of the range, as there is always at least one segment.

特性文檔編製

formatter : QValue3DAxisFormatter *

This property holds the axis formatter to be used.

Any existing formatter is deleted when a new formatter is set.

該特性在 QtDataVisualization 1.1 引入。

訪問函數：

QValue3DAxisFormatter *	formatter () const
void	setFormatter (QValue3DAxisFormatter * formatter )

通知程序信號：

void	formatterChanged (QValue3DAxisFormatter * formatter )

labelFormat : QString

This property holds the label format to be used for the labels on this axis.

格式字符串支持的以下轉換說明符、長度修飾符和標誌的提供通過 printf() 在標準 C++ 庫：d、i、o、x、X、f、F、e、E、g、G、c。

若 QAbstract3DGraph::locale is anything else than "C" ，支持的說明符限於：d、e、E、f、g、G 和 i。另外，僅支持精度修飾符。其餘格式來自默認 QLocale 對於應用程序。

用法範例：

axis->setLabelFormat("%.2f mm");

訪問函數：

QString	labelFormat () const
void	setLabelFormat (const QString & format )

通知程序信號：

void	labelFormatChanged (const QString & format )

另請參閱 formatter and QAbstract3DGraph::locale .

reversed : bool

This property holds whether the axis is rendered in reverse.

若 true , the axis will be rendered in reverse, i.e. the positions of minimum and maximum values are swapped when the graph is rendered. This property doesn't affect the actual minimum and maximum values of the axis.

該特性在 QtDataVisualization 1.1 引入。

訪問函數：

bool	reversed () const
void	setReversed (bool enable )

通知程序信號：

void	reversedChanged (bool enable )

segmentCount : int

This property holds the number of segments on the axis.

This indicates how many labels are drawn. The number of grid lines to be drawn is calculated with formula: segments * subsegments + 1 . The preset default is 5 . The value cannot be below 1 .

訪問函數：

int	segmentCount () const
void	setSegmentCount (int count )

通知程序信號：

void	segmentCountChanged (int count )

另請參閱 setSubSegmentCount ().

subSegmentCount : int

This property holds the number of subsegments inside each segment on the axis.

Grid lines are drawn between each subsegment, in addition to each segment. The preset default is 1 . The value cannot be below 1 .

訪問函數：

int	subSegmentCount () const
void	setSubSegmentCount (int count )

通知程序信號：

void	subSegmentCountChanged (int count )

另請參閱 setSegmentCount ().

成員函數文檔編製

QValue3DAxis:: QValue3DAxis ( QObject * parent = nullptr)

構造 QValue3DAxis 采用給定 parent .

[虛擬] QValue3DAxis:: ~QValue3DAxis ()

銷毀 QValue3DAxis .