Qt 5.9 | Qt Data Visualization | C++ Classes | QTouch3DInputHandler

Qt 5.9.9 Reference Documentation

# QTouch3DInputHandler Class

Basic touch display based input handler. More...

Header: | #include <QTouch3DInputHandler>
Since: | QtDataVisualization 1.0
Instantiated By: | TouchInputHandler3D
Inherits: | Q3DInputHandler

- List of all members, including inherited members

## Public Functions

| QTouch3DInputHandler(QObject *parent = Q_NULLPTR)
virtual | ~QTouch3DInputHandler()

## Reimplemented Public Functions

virtual void | touchEvent(QTouchEvent *event)

- 12 public functions inherited from Q3DInputHandler
- 12 public functions inherited from QAbstract3DInputHandler

### Additional Inherited Members

- 4 properties inherited from Q3DInputHandler
- 3 properties inherited from QAbstract3DInputHandler
- 4 signals inherited from Q3DInputHandler
- 3 signals inherited from QAbstract3DInputHandler
- 4 protected functions inherited from QAbstract3DInputHandler

## Detailed Description

Basic touch display based input handler.

QTouch3DInputHandler is the basic input handler for touch screen devices.

Default touch input handler has the following functionalty:

Gesture | Action
--- | ---
Touch-And-Move | Rotate graph within limits set for Q3DCamera
Tap | Select the item tapped or remove selection if none. May open the secondary view depending on the selection mode.
Tap-And-Hold | Same as tap.
Pinch | Zoom in/out within the allowable zoom range set for Q3DCamera.
Tap 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 Q3DInputHandler properties.

## Member Function Documentation

### QTouch3DInputHandler::QTouch3DInputHandler(QObject *parent = Q_NULLPTR)

Constructs the basic touch display input handler. An optional parent parameter can be given and is then passed to QObject constructor.

### `[virtual]` QTouch3DInputHandler::~QTouch3DInputHandler()

Destroys the input handler.

### `[virtual]` void QTouch3DInputHandler::touchEvent(QTouchEvent *event)

Reimplemented from QAbstract3DInputHandler::touchEvent().

Override this to change handling of touch events. Touch event is given in the event.