Q3DInputHandler 类

基于滚轮鼠标的基本输入处理程序。 更多...

头：	#include <Q3DInputHandler>
qmake:	QT += datavisualization
Since:	QtDataVisualization 1.0
实例化：	InputHandler3D
继承：	QAbstract3DInputHandler
继承者：	QTouch3DInputHandler

该类在 QtDataVisualization 1.0 引入。

• 所有成员列表，包括继承成员

特性

• rotationEnabled : bool
• selectionEnabled : bool
• zoomAtTargetEnabled : bool
• zoomEnabled : bool

公共函数

	Q3DInputHandler (QObject * parent = nullptr)
virtual	~Q3DInputHandler ()
bool	isRotationEnabled () const
bool	isSelectionEnabled () const
bool	isZoomAtTargetEnabled () const
bool	isZoomEnabled () const
void	setRotationEnabled (bool enable )
void	setSelectionEnabled (bool enable )
void	setZoomAtTargetEnabled (bool enable )
void	setZoomEnabled (bool enable )

重实现公共函数

virtual void	mouseMoveEvent (QMouseEvent * event , const QPoint & mousePos ) override
virtual void	mousePressEvent (QMouseEvent * event , const QPoint & mousePos ) override
virtual void	mouseReleaseEvent (QMouseEvent * event , const QPoint & mousePos ) override
virtual void	wheelEvent (QWheelEvent * event ) override

信号

void	rotationEnabledChanged (bool enable )
void	selectionEnabledChanged (bool enable )
void	zoomAtTargetEnabledChanged (bool enable )
void	zoomEnabledChanged (bool enable )

详细描述

Q3DInputHandler is the basic input handler for wheel mouse type of input devices.

Default input handler has the following functionalty:

Mouse action	动作
Drag with right button pressed	Rotate graph within limits set for Q3DCamera .
Left click	Select item under cursor or remove selection if none. May open the secondary view depending on the 选定模式 .
Mouse wheel	Zoom in/out within the allowable zoom range set for Q3DCamera .
Left click on the primary view when the secondary view is visible	Closes the secondary view. 注意： Secondary view is available only for Q3DBars and Q3DSurface 图形。

Rotation, zoom, and selection can each be individually disabled using corresponding properties of this class.

特性文档编制

rotationEnabled : bool

This property holds whether this input handler allows graph rotation.

默认为 true .

该特性在 QtDataVisualization 1.2 引入。

访问函数：

bool	isRotationEnabled () const
void	setRotationEnabled (bool enable )

通知程序信号：

void	rotationEnabledChanged (bool enable )

selectionEnabled : bool

This property holds whether this input handler allows selection from the graph.

默认为 true .

该特性在 QtDataVisualization 1.2 引入。

访问函数：

bool	isSelectionEnabled () const
void	setSelectionEnabled (bool enable )

通知程序信号：

void	selectionEnabledChanged (bool enable )

zoomAtTargetEnabled : bool

This property holds whether zooming should change the camera target so that the zoomed point of the graph stays at the same location after the zoom.

默认为 true .

该特性在 QtDataVisualization 1.2 引入。

访问函数：

bool	isZoomAtTargetEnabled () const
void	setZoomAtTargetEnabled (bool enable )

通知程序信号：

void	zoomAtTargetEnabledChanged (bool enable )

zoomEnabled : bool

This property holds whether this input handler allows graph zooming.

默认为 true .

该特性在 QtDataVisualization 1.2 引入。

访问函数：

bool	isZoomEnabled () const
void	setZoomEnabled (bool enable )

通知程序信号：

void	zoomEnabledChanged (bool enable )

成员函数文档编制

Q3DInputHandler:: Q3DInputHandler ( QObject * parent = nullptr)

Constructs the basic mouse input handler. An optional parent 参数可以给出，然后会被传递给 QObject 构造函数。

[虚拟] Q3DInputHandler:: ~Q3DInputHandler ()

Destroys the input handler.

[override virtual] void Q3DInputHandler:: mouseMoveEvent ( QMouseEvent * event , const QPoint & mousePos )

重实现： QAbstract3DInputHandler::mouseMoveEvent (QMouseEvent *event, const QPoint &mousePos).

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

[override virtual] void Q3DInputHandler:: mousePressEvent ( QMouseEvent * event , const QPoint & mousePos )

重实现： QAbstract3DInputHandler::mousePressEvent (QMouseEvent *event, const QPoint &mousePos).

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

[override virtual] void Q3DInputHandler:: mouseReleaseEvent ( QMouseEvent * event , const QPoint & mousePos )

重实现： QAbstract3DInputHandler::mouseReleaseEvent (QMouseEvent *event, const QPoint &mousePos).

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

[override virtual] void Q3DInputHandler:: wheelEvent ( QWheelEvent * event )

重实现： QAbstract3DInputHandler::wheelEvent (QWheelEvent *event).

Override this to change handling of wheel events. The wheel event is given in the event .

内容

• 特性

• 公共函数

• 重实现公共函数

• 信号

• 详细描述