Q3DInputHandler Class
Basic wheel mouse based input handler. More...
| Header: | #include <Q3DInputHandler> |
| qmake: | QT += datavisualization |
| Since: | QtDataVisualization 1.0 |
| Instantiated By: | InputHandler3D |
| Inherits: | QAbstract3DInputHandler |
| Inherited By: |
This class was introduced in QtDataVisualization 1.0.
Properties
- rotationEnabled : bool
- selectionEnabled : bool
- zoomAtTargetEnabled : bool
- zoomEnabled : bool
Public Functions
| 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) |
Reimplemented Public Functions
| 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 |
Signals
| void | rotationEnabledChanged(bool enable) |
| void | selectionEnabledChanged(bool enable) |
| void | zoomAtTargetEnabledChanged(bool enable) |
| void | zoomEnabledChanged(bool enable) |
Detailed Description
Q3DInputHandler is the basic input handler for wheel mouse type of input devices.
Default input handler has the following functionalty:
| Mouse action | Action |
|---|---|
| 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 selection mode. |
| 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. Note: Secondary view is available only for Q3DBars and Q3DSurface graphs. |
Rotation, zoom, and selection can each be individually disabled using corresponding properties of this class.
Property Documentation
rotationEnabled : bool
This property holds whether this input handler allows graph rotation.
Defaults to true.
This property was introduced in QtDataVisualization 1.2.
Access functions:
| bool | isRotationEnabled() const |
| void | setRotationEnabled(bool enable) |
Notifier signal:
| void | rotationEnabledChanged(bool enable) |
selectionEnabled : bool
This property holds whether this input handler allows selection from the graph.
Defaults to true.
This property was introduced in QtDataVisualization 1.2.
Access functions:
| bool | isSelectionEnabled() const |
| void | setSelectionEnabled(bool enable) |
Notifier signal:
| 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.
Defaults to true.
This property was introduced in QtDataVisualization 1.2.
Access functions:
| bool | isZoomAtTargetEnabled() const |
| void | setZoomAtTargetEnabled(bool enable) |
Notifier signal:
| void | zoomAtTargetEnabledChanged(bool enable) |
zoomEnabled : bool
This property holds whether this input handler allows graph zooming.
Defaults to true.
This property was introduced in QtDataVisualization 1.2.
Access functions:
| bool | isZoomEnabled() const |
| void | setZoomEnabled(bool enable) |
Notifier signal:
| void | zoomEnabledChanged(bool enable) |
Member Function Documentation
Q3DInputHandler::Q3DInputHandler(QObject *parent = nullptr)
Constructs the basic mouse input handler. An optional parent parameter can be given and is then passed to QObject constructor.
[virtual] Q3DInputHandler::~Q3DInputHandler()
Destroys the input handler.
[override virtual] void Q3DInputHandler::mouseMoveEvent(QMouseEvent *event, const QPoint &mousePos)
Reimplements: 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)
Reimplements: 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)
Reimplements: 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)
Reimplements: QAbstract3DInputHandler::wheelEvent(QWheelEvent *event).
Override this to change handling of wheel events. The wheel event is given in the event.
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