QAbstractAxis 类

QAbstractAxis 类是用于专用轴类的基类。 更多...

头：	#include <QAbstractAxis>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Graphs) target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake:	QT += graphs
在 QML：	AbstractAxis
继承：	QObject
继承者：	QBarCategoryAxis , QDateTimeAxis ，和 QValueAxis

• 所有成员列表，包括继承成员
• QAbstractAxis is part of Qt Graphs C++ Classes for 2D .

公共类型

枚举类	AxisType { Value, BarCategory, DateTime }

特性

gridVisible : bool labelDelegate : QQmlComponent* labelsAngle : qreal labelsVisible : bool lineVisible : bool subGridVisible : bool

titleColor : QColor titleFont : QFont titleText : QString titleVisible : bool visible : bool

公共函数

virtual	~QAbstractAxis () override
void	hide ()
bool	isGridVisible () const
bool	isLineVisible () const
bool	isSubGridVisible () const
bool	isTitleVisible () const
bool	isVisible () const
QQmlComponent *	labelDelegate () const
qreal	labelsAngle () const
bool	labelsVisible () const
void	setGridVisible (bool visible = true)
void	setLabelDelegate (QQmlComponent * newLabelDelegate )
void	setLabelsAngle (qreal angle )
void	setLabelsVisible (bool visible = true)
void	setLineVisible (bool visible = true)
void	setMax (const QVariant & max )
void	setMin (const QVariant & min )
void	setRange (const QVariant & min , const QVariant & max )
void	setSubGridVisible (bool visible = true)
void	setTitleColor (QColor color )
void	setTitleFont (const QFont & font )
void	setTitleText (const QString & title )
void	setTitleVisible (bool visible = true)
void	setVisible (bool visible = true)
void	show ()
QColor	titleColor () const
QFont	titleFont () const
QString	titleText () const
virtual QAbstractAxis::AxisType	type () const = 0

信号

void	gridVisibleChanged (bool visible )
void	labelDelegateChanged ()
void	labelsAngleChanged (qreal angle )
void	labelsVisibleChanged (bool visible )
void	lineVisibleChanged (bool visible )
void	subGridVisibleChanged (bool visible )
void	titleColorChanged (QColor color )
void	titleFontChanged (const QFont & font )
void	titleTextChanged (const QString & title )
void	titleVisibleChanged (bool visible )
void	update ()
void	visibleChanged (bool visible )

详细描述

Each series can be bound to only one horizontal and vertical axis.

The properties and visibility of various axis elements, such as axis line, title, labels, and grid lines, can be individually controlled.

成员类型文档编制

enum class QAbstractAxis:: AxisType

此枚举类型指定轴对象的类型。

常量	值
QAbstractAxis::AxisType::Value	0
QAbstractAxis::AxisType::BarCategory	1
QAbstractAxis::AxisType::DateTime	2

特性文档编制

gridVisible : bool

This property holds the visibility of the grid lines. By default, the value is true .

访问函数：

bool	isGridVisible () const
void	setGridVisible (bool visible = true)

通知程序信号：

void	gridVisibleChanged (bool visible )

labelDelegate : QQmlComponent *

This property holds a custom QML Component used as a label for the axis. This component should either be a Text component or contain "property string text", so that this property will be assigned the value of the label.

访问函数：

QQmlComponent *	labelDelegate () const
void	setLabelDelegate (QQmlComponent * newLabelDelegate )

通知程序信号：

void	labelDelegateChanged ()

labelsAngle : qreal

此特性保持轴标签的角度，以度为单位。

访问函数：

qreal	labelsAngle () const
void	setLabelsAngle (qreal angle )

通知程序信号：

void	labelsAngleChanged (qreal angle )

labelsVisible : bool

This property holds whether axis labels are visible. By default, the value is true .

访问函数：

bool	labelsVisible () const
void	setLabelsVisible (bool visible = true)

通知程序信号：

void	labelsVisibleChanged (bool visible )

lineVisible : bool

This property holds the visibility of the axis line. By default, the value is true .

访问函数：

bool	isLineVisible () const
void	setLineVisible (bool visible = true)

通知程序信号：

void	lineVisibleChanged (bool visible )

subGridVisible : bool

This property holds the visibility of the subgrid lines.

Applies only to axes that support subgrid lines. By default, the value is true .

访问函数：

bool	isSubGridVisible () const
void	setSubGridVisible (bool visible = true)

通知程序信号：

void	subGridVisibleChanged (bool visible )

titleColor : QColor

This property holds the color used to draw the title text.

访问函数：

QColor	titleColor () const
void	setTitleColor (QColor color )

通知程序信号：

void	titleColorChanged (QColor color )

titleFont : QFont

This property holds the font of the title of the axis.

访问函数：

QFont	titleFont () const
void	setTitleFont (const QFont & font )

通知程序信号：

void	titleFontChanged (const QFont & font )

titleText : QString

此特性保持轴的标题。

默认为空。轴标题支持 HTML 格式。

访问函数：

QString	titleText () const
void	setTitleText (const QString & title )

通知程序信号：

void	titleTextChanged (const QString & title )

titleVisible : bool

This property holds the visibility of the axis title.

By default, the value is true .

访问函数：

bool	isTitleVisible () const
void	setTitleVisible (bool visible = true)

通知程序信号：

void	titleVisibleChanged (bool visible )

visible : bool

This property holds the visibility of the axis. By default, the value is true .

访问函数：

bool	isVisible () const
void	setVisible (bool visible = true)

通知程序信号：

void	visibleChanged (bool visible )

成员函数文档编制

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

Destructs the axis object. When the axis is added to a graph, the graph object takes ownership.

void QAbstractAxis:: hide ()

Makes the axis, labels, and grid lines invisible.

void QAbstractAxis:: setLineVisible ( bool visible = true)

Determines whether the axis line and tick marks are visible .

注意： setter 函数对于特性 lineVisible .

另请参阅 isLineVisible ().

void QAbstractAxis:: setMax (const QVariant & max )

Sets the maximum value shown on the axis. Depending on the actual axis type, the max parameter is converted to the appropriate type of value. If the conversion is impossible, the function call does nothing.

void QAbstractAxis:: setMin (const QVariant & min )

Sets the minimum value shown on the axis. Depending on the actual axis type, the min parameter is converted to the appropriate type of value. If the conversion is impossible, the function call does nothing.

void QAbstractAxis:: setRange (const QVariant & min , const QVariant & max )

Sets the range shown on the axis. Depending on the actual axis type, the min and max parameters are converted to appropriate types of values. If the conversion is impossible, the function call does nothing.

void QAbstractAxis:: setTitleColor ( QColor color )

Sets the color used to draw titles to color .

注意： setter 函数对于特性 titleColor .

另请参阅 titleColor ().

void QAbstractAxis:: setTitleFont (const QFont & font )

Sets the font used to draw titles to font .

注意： setter 函数对于特性 titleFont .

另请参阅 titleFont ().

void QAbstractAxis:: setVisible ( bool visible = true)

Sets the visibility of the axis, labels, and grid lines to visible .

注意： setter 函数对于特性 visible .

另请参阅 isVisible ().

void QAbstractAxis:: show ()

Makes the axis, labels, and grid lines visible.

QColor QAbstractAxis:: titleColor () const

Returns the color used to draw titles.

注意： Getter function for property titleColor.

另请参阅 setTitleColor ().

QFont QAbstractAxis:: titleFont () const

Returns the font used to draw titles.

注意： Getter function for property titleFont.

另请参阅 setTitleFont ().

[pure virtual] QAbstractAxis::AxisType QAbstractAxis:: type () const

返回轴的类型。

[signal] void QAbstractAxis:: update ()

This signal is emitted when the axis needs to be updated.

内容

1. 公共类型

2. 特性

3. 公共函数

4. 信号

5. 详细描述