QValue3DAxis Class

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

頭：	#include <QValue3DAxis>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Graphs) target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake:	QT += graphs
在 QML：	Value3DAxis
繼承：	QAbstract3DAxis

• 所有成員列錶，包括繼承成員
• QValue3DAxis is part of Qt Graphs C++ Classes for 3D .

特性

formatter : QValue3DAxisFormatter* labelFormat : QString reversed : bool

segmentCount : qsizetype subSegmentCount : qsizetype

公共函數

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

信號

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

詳細描述

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, and 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 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.

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 Q3DGraphsWidgetItem::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 Q3DGraphsWidgetItem::locale .

reversed : bool

This property holds whether the axis is rendered in reverse.

若 true , the axis will be rendered in reverse, which means 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.

訪問函數：

bool	reversed () const
void	setReversed (bool enable )

通知程序信號：

void	reversedChanged (bool enable )

segmentCount : qsizetype

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：

qsizetype	segmentCount () const
void	setSegmentCount (qsizetype count )

通知程序信號：

void	segmentCountChanged (qsizetype count )

另請參閱 setSubSegmentCount ().

subSegmentCount : qsizetype

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：

qsizetype	subSegmentCount () const
void	setSubSegmentCount (qsizetype count )

通知程序信號：

void	subSegmentCountChanged (qsizetype count )

另請參閱 setSegmentCount ().

成員函數文檔編製

[explicit] QValue3DAxis:: QValue3DAxis ( QObject * parent = nullptr)

Constructs QValue3DAxis with the given parent .

[override virtual noexcept] QValue3DAxis:: ~QValue3DAxis ()

銷毀 QValue3DAxis .

內容

1. 特性

2. 公共函數

3. 信號

4. 詳細描述