内容

• 公共类型
• 特性
• 公共函数
• 信号
• 保护函数
• 详细描述

QAbstract3DInputHandler Class

The base class for implementations of input handlers. 更多...

头：	#include <QAbstract3DInputHandler>
Since:	QtDataVisualization 1.0
实例化：	AbstractInputHandler3D
继承：	QObject
继承者：	Q3DInputHandler

• 所有成员列表，包括继承成员

公共类型

enum	InputView { InputViewNone, InputViewOnPrimary, InputViewOnSecondary }

特性

• inputPosition : QPoint
• inputView : InputView
• scene : Q3DScene*

公共函数

virtual	~QAbstract3DInputHandler ()
QPoint	inputPosition () const
QAbstract3DInputHandler::InputView	inputView () const
virtual void	mouseDoubleClickEvent (QMouseEvent * event )
virtual void	mouseMoveEvent (QMouseEvent * event , const QPoint & mousePos )
virtual void	mousePressEvent (QMouseEvent * event , const QPoint & mousePos )
virtual void	mouseReleaseEvent (QMouseEvent * event , const QPoint & mousePos )
Q3DScene *	scene () const
void	setInputPosition (const QPoint & position )
void	setInputView (QAbstract3DInputHandler::InputView inputView )
void	setScene (Q3DScene * scene )
virtual void	touchEvent (QTouchEvent * event )
virtual void	wheelEvent (QWheelEvent * event )

信号

void	inputViewChanged (QAbstract3DInputHandler::InputView view )
void	positionChanged (const QPoint & position )
void	sceneChanged (Q3DScene * scene )

保护函数

	QAbstract3DInputHandler (QObject * parent = nullptr)
int	prevDistance () const
QPoint	previousInputPos () const
void	setPrevDistance (int distance )
void	setPreviousInputPos (const QPoint & position )

详细描述

QAbstract3DInputHandler is the base class that is subclassed by different input handling implementations that take input events and translate those to camera and light movements. Input handlers also translate raw input events to slicing and selection events in the scene.

成员类型文档编制

enum QAbstract3DInputHandler:: InputView

Predefined input views for mouse and touch based input handlers.

常量	值	描述
QAbstract3DInputHandler::InputViewNone	0	Mouse or touch not on a view.
QAbstract3DInputHandler::InputViewOnPrimary	1	Mouse or touch input received on the primary view area. If secondary view is displayed when inputView becomes InputViewOnPrimary, secondary view is closed.
QAbstract3DInputHandler::InputViewOnSecondary	2	Mouse or touch input received on the secondary view area.

特性文档编制

inputPosition : QPoint

This property holds the last input position based on the processed input events.

访问函数：

QPoint	inputPosition () const
void	setInputPosition (const QPoint & position )

通知程序信号：

void	positionChanged (const QPoint & position )

inputView : InputView

This property holds the current enumerated input view based on the view of the processed input events.

One of the InputView 枚举值。

When the view changes, the inputViewChanged 信号被发射。

访问函数：

QAbstract3DInputHandler::InputView	inputView () const
void	setInputView (QAbstract3DInputHandler::InputView inputView )

通知程序信号：

void	inputViewChanged (QAbstract3DInputHandler::InputView view )

另请参阅 InputView .

scene : Q3DScene *

This property holds the 3D scene this abstract input handler is controlling.

One input handler can control one scene. Setting a scene to an input handler does not transfer the ownership of the scene.

访问函数：

Q3DScene *	scene () const
void	setScene (Q3DScene * scene )

通知程序信号：

void	sceneChanged (Q3DScene * scene )

成员函数文档编制

[protected] QAbstract3DInputHandler:: QAbstract3DInputHandler ( QObject * parent = nullptr)

Constructs the base class. An optional parent 参数可以给出，然后会被传递给 QObject 构造函数。

[虚拟] QAbstract3DInputHandler:: ~QAbstract3DInputHandler ()

Destroys the base class.

[虚拟] void QAbstract3DInputHandler:: mouseDoubleClickEvent ( QMouseEvent * event )

Override this to handle mouse double click events. Mouse double click event is given in the event .

[虚拟] void QAbstract3DInputHandler:: mouseMoveEvent ( QMouseEvent * event , const QPoint & mousePos )

Override this to handle mouse move events. Mouse move event is given in the event and the mouse position in mousePos .

[虚拟] void QAbstract3DInputHandler:: mousePressEvent ( QMouseEvent * event , const QPoint & mousePos )

Override this to handle mouse press events. Mouse press event is given in the event and the mouse position in mousePos .

[虚拟] void QAbstract3DInputHandler:: mouseReleaseEvent ( QMouseEvent * event , const QPoint & mousePos )

Override this to handle mouse release events. Mouse release event is given in the event and the mouse position in mousePos .

[protected] int QAbstract3DInputHandler:: prevDistance () const

Returns the manhattan length between last two input positions.

另请参阅 setPrevDistance ().

[protected] QPoint QAbstract3DInputHandler:: previousInputPos () const

Returns the previous input position.

另请参阅 setPreviousInputPos ().

[protected] void QAbstract3DInputHandler:: setPrevDistance ( int distance )

设置 distance (manhattan length) between last two input positions.

另请参阅 prevDistance ().

[protected] void QAbstract3DInputHandler:: setPreviousInputPos (const QPoint & position )

Sets the previous input position to the point given by position .

另请参阅 previousInputPos ().

[虚拟] void QAbstract3DInputHandler:: touchEvent ( QTouchEvent * event )

Override this to handle touch input events. Touch event is given in the event .

[虚拟] void QAbstract3DInputHandler:: wheelEvent ( QWheelEvent * event )

Override this to handle wheel events. Wheel event is given in the event .