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: |
该类在 QtDataVisualization 1.0 引入。
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 ) |
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 |
void | rotationEnabledChanged (bool enable ) |
void | selectionEnabledChanged (bool enable ) |
void | zoomAtTargetEnabledChanged (bool enable ) |
void | zoomEnabledChanged (bool enable ) |
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.
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 ) |
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 ) |
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 ) |
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 ) |
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 .