QTapReading ¶

函数 ¶

QTapReading Units ¶

The tap sensor registers tap events along the 3 axes that originate from the phone. The axes are arranged as follows.

By default it returns only double tap events. The returnDoubleTapEvents property must be set to false to return individual tap events.

class QTapReading ( parent ) ¶

参数

parent – QObject

PySide2.QtSensors.QTapReading. TapDirection ¶

The tap direction is indicated using flags. Applications should check for the presence of a particular flag as multiple flags may be set at once.

The X, Y and Z flags allow an app to check for taps along an axis without caring about the direction.

if (reading->tapDirection()&QTapReading::X) {
    ...
}
												

The *_Pos and *_Neg flags allow checking for taps in a specific direction. Note that some devices cannot determine the direction of a tap and will set both the _Pos and _Neg flag for the detected axis. Previous versions of the API did not allow this. Applications that check for the _Pos and _Neg flags as values should be updated so they can work with all devices.

For example, if you have code like

you can rewrite it as

常量	描述
QTapReading.Undefined	This value means that the direction is unknown.
QTapReading.X	This flag is set if the tap was along the X axis.
QTapReading.Y	This flag is set if the tap was along the Y axis.
QTapReading.Z	This flag is set if the tap was along the Z axis.
QTapReading.X_Pos	This flag is set if the tap was towards the positive X direction.
QTapReading.Y_Pos	This flag is set if the tap was towards the positive Y direction.
QTapReading.Z_Pos	This flag is set if the tap was towards the positive Z direction.
QTapReading.X_Neg	This flag is set if the tap was towards the negative X direction.
QTapReading.Y_Neg	This flag is set if the tap was towards the negative Y direction.
QTapReading.Z_Neg	This flag is set if the tap was towards the negative Z direction.
QTapReading.X_Both	相当于 X_Pos|X_Neg . Returned by devices that cannot detect the direction of a tap.
QTapReading.Y_Both	相当于 Y_Pos|Y_Neg . Returned by devices that cannot detect the direction of a tap.
QTapReading.Z_Both	相当于 Z_Pos|Z_Neg . Returned by devices that cannot detect the direction of a tap.

PySide2.QtSensors.QTapReading. isDoubleTap ( ) ¶

返回类型

bool

PySide2.QtSensors.QTapReading. setDoubleTap ( doubleTap ) ¶

参数

doubleTap – bool

Sets the double tap status of the reading to doubleTap .

另请参阅

isDoubleTap()

PySide2.QtSensors.QTapReading. setTapDirection ( tapDirection ) ¶

参数

tapDirection – TapDirection

Sets the tap direction to tapDirection .

另请参阅

tapDirection()

PySide2.QtSensors.QTapReading. tapDirection ( ) ¶

返回类型

TapDirection

另请参阅

setTapDirection()