PointerData class Null safety

Information about the state of a pointer.

Constructors

PointerData({int embedderId = 0, Duration timeStamp = Duration.zero, PointerChange change = PointerChange.cancel, PointerDeviceKind kind = PointerDeviceKind.touch, PointerSignalKind? signalKind, int device = 0, int pointerIdentifier = 0, double physicalX = 0.0, double physicalY = 0.0, double physicalDeltaX = 0.0, double physicalDeltaY = 0.0, int buttons = 0, bool obscured = false, bool synthesized = false, double pressure = 0.0, double pressureMin = 0.0, double pressureMax = 0.0, double distance = 0.0, double distanceMax = 0.0, double size = 0.0, double radiusMajor = 0.0, double radiusMinor = 0.0, double radiusMin = 0.0, double radiusMax = 0.0, double orientation = 0.0, double tilt = 0.0, int platformData = 0, double scrollDeltaX = 0.0, double scrollDeltaY = 0.0, double panX = 0.0, double panY = 0.0, double panDeltaX = 0.0, double panDeltaY = 0.0, double scale = 0.0, double rotation = 0.0})
Creates an object that represents the state of a pointer.
const

Properties

buttons → int
Bit field using the *Button constants (primaryMouseButton, secondaryStylusButton, etc). For example, if this has the value 6 and the kind is PointerDeviceKind.invertedStylus, then this indicates an upside-down stylus with both its primary and secondary buttons pressed.
final
change → PointerChange
How the pointer has changed since the last report.
final
device → int
Unique identifier for the pointing device, reused across interactions.
final
distance → double
The distance of the detected object from the input surface (e.g. 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.
final
distanceMax → double
The maximum value that a distance can return for this pointer. If this input device cannot detect "hover touch" input events, then this will be 0.0.
final
embedderId → int
Unique identifier that ties the PointerEvent to embedder event created it.
final
hashCode → int
The hash code for this object.
read-onlyinherited
kind → PointerDeviceKind
The kind of input device for which the event was generated.
final
obscured → bool
Set if an application from a different security domain is in any way obscuring this application's window. (Aspirational; not currently implemented.)
final
orientation → double
For PointerDeviceKind.touch events:
final
panDeltaX → double
For events with change of PointerChange.panZoomUpdate:
final
panDeltaY → double
For events with change of PointerChange.panZoomUpdate:
final
panX → double
For events with change of PointerChange.panZoomUpdate:
final
panY → double
For events with change of PointerChange.panZoomUpdate:
final
physicalDeltaX → double
The distance of pointer movement on X coordinate in physical pixels.
final
physicalDeltaY → double
The distance of pointer movement on Y coordinate in physical pixels.
final
physicalX → double
X coordinate of the position of the pointer, in physical pixels in the global coordinate space.
final
physicalY → double
Y coordinate of the position of the pointer, in physical pixels in the global coordinate space.
final
platformData → int
Opaque platform-specific data associated with the event.
final
pointerIdentifier → int
Unique identifier for the pointer.
final
pressure → double
The pressure of the touch as 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.
final
pressureMax → double
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.
final
pressureMin → double
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.
final
radiusMajor → double
The radius of the contact ellipse along the major axis, in logical pixels.
final
radiusMax → double
The minimum value that could be reported for radiusMajor and radiusMinor for this pointer, in logical pixels.
final
radiusMin → double
The minimum value that could be reported for radiusMajor and radiusMinor for this pointer, in logical pixels.
final
radiusMinor → double
The radius of the contact ellipse along the minor axis, in logical pixels.
final
rotation → double
For events with change of PointerChange.panZoomUpdate:
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
scale → double
For events with change of PointerChange.panZoomUpdate:
final
scrollDeltaX → double
For events with signalKind of PointerSignalKind.scroll:
final
scrollDeltaY → double
For events with signalKind of PointerSignalKind.scroll:
final
signalKind → PointerSignalKind?
The kind of signal for a pointer signal event.
final
size → double
The area of the screen being pressed, scaled to a value between 0 and 1. The value of size 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.
final
synthesized → bool
Set if this pointer data was synthesized by pointer data packet converter. pointer data packet converter will synthesize additional pointer datas if the input sequence of pointer data is illegal.
final
tilt → double
For PointerDeviceKind.stylus and PointerDeviceKind.invertedStylus events:
final
timeStamp → Duration
Time of event dispatch, relative to an arbitrary timeline.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
A string representation of this object.
override
toStringFull() → String
Returns a complete textual description of the information in this object.

Operators

operator ==(Object other) → bool
The equality operator.
inherited