PointerEvent 继承自： Event[EventControlType]

Low-level pointer payload with detailed device metrics.

属性

名称	类型	默认值	说明
kind	PointerDeviceType	metadata={'data_field': 'k'}	The kind of input device for which the event was generated.
local_position	Offset	metadata={'data_field': 'l'}	The position transformed into the event receiver's local coordinate system according to transform.
global_position	Offset	metadata={'data_field': 'g'}	Coordinate of the position of the pointer, in logical pixels in the global coordinate space.
timestamp	Duration	metadata={'data_field': 'ts'}	Time of event dispatch, relative to an arbitrary timeline.
device	float	metadata={'data_field': 'dev'}	Unique identifier for the pointing device, reused across interactions.
pressure	float	metadata={'data_field': 'ps'}	The pressure of the touch. This value is a number ranging from 0.0, indicating a touch with no discernible pressure, to 1.0, indicating a touch with "normal" pressure, and possibly beyond, indicating a stronger touch. For devices that do not detect pressure (e.g. mice), returns 1.0.
pressure_min	float	metadata={'data_field': 'pMin'}	The minimum value that pressure can return for this pointer. For devices that do not detect pressure (e.g. mice), returns 1.0. This will always be a number less than or equal to 1.0.
pressure_max	float	metadata={'data_field': 'pMax'}	The maximum value that pressure can return for this pointer. For devices that do not detect pressure (e.g. mice), returns 1.0. This will always be a greater than or equal to 1.0.
distance	float	metadata={'data_field': 'dist'}	The distance of the detected object from the input surface. For instance, this value could be the distance of a stylus or finger from a touch screen, in arbitrary units on an arbitrary (not necessarily linear) scale. If the pointer is down, this is 0.0 by definition.
distance_max	float	metadata={'data_field': 'distMax'}	The maximum value that distance can return for this pointer. If this input device cannot detect "hover touch" input events, then this will be 0.0.
size	float	metadata={'data_field': 'size'}	The area of the screen being pressed. This value is scaled to a range between 0 and 1. It can be used to determine fat touch events. This value is only set on Android and is a device specific approximation within the range of detectable values. So, for example, the value of 0.1 could mean a touch with the tip of the finger, 0.2 a touch with full finger, and 0.3 the full palm.
radius_major	float	metadata={'data_field': 'rMj'}	The radius of the contact ellipse along the major axis, in logical pixels.
radius_minor	float	metadata={'data_field': 'rMn'}	The radius of the contact ellipse along the minor axis, in logical pixels.
radius_min	float	metadata={'data_field': 'rMin'}	The minimum value that could be reported for radius_major and radius_minor for this pointer, in logical pixels.
radius_max	float	metadata={'data_field': 'rMax'}	The maximum value that could be reported for radius_major and radius_minor for this pointer, in logical pixels.
orientation	float	metadata={'data_field': 'or'}	The orientation angle of the detected object, in radians.
tilt	float	metadata={'data_field': 'tilt'}	The tilt angle of the detected object, in radians.
local_delta	Optional[Offset]	None	The delta of the pointer's position since the event start, in logical pixels, within the local coordinate space.
global_delta	Optional[Offset]	None	The delta of the pointer's position since the event start, in logical pixels, within the global coordinate space.