Base class for touch, stylus, or mouse events.
Constructors
- PointerEvent({Duration timeStamp: Duration.ZERO, int pointer: 0, PointerDeviceKind kind: PointerDeviceKind.touch, int device: 0, Point position: Point.origin, Offset delta: Offset.zero, int buttons: 0, bool down: false, bool obscured: false, double pressure: 1.0, double pressureMin: 1.0, double pressureMax: 1.0, double distance: 0.0, double distanceMax: 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 })
-
Abstract const constructor. This constructor enables subclasses to provide const constructors so that they can be used in const expressions.
const
Properties
-
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.
read-only - delta → Offset
-
Distance in logical pixels that the pointer moved since the last PointerMoveEvent. Always 0.0 for down, up, and cancel events.
read-only - device → int
-
Unique identifier for the pointing device, reused across interactions.
read-only - 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.
read-only - 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.
read-only - distanceMin → double
-
The minimum value that a distance can return for this pointer (always 0.0).
read-only - down → bool
-
Set if the pointer is currently down. For touch and stylus pointers, this means the object (finger, pen) is in contact with the input surface. For mice, it means a button is pressed.
read-only - kind → PointerDeviceKind
-
The kind of input device for which the event was generated.
read-only - obscured → bool
-
Set if an application from a different security domain is in any way obscuring this application's window. (Aspirational; not currently implemented.)
read-only - orientation → double
-
For PointerDeviceKind.touch events:
read-only - pointer → int
-
Unique identifier for the pointer, not reused.
read-only - position → Point
-
Coordinate of the position of the pointer, in logical pixels in the global coordinate space.
read-only - 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.
read-only - 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.
read-only - 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.
read-only - radiusMajor → double
-
The radius of the contact ellipse along the major axis, in logical pixels.
read-only - radiusMax → double
-
The minimum value that could be reported for radiusMajor and radiusMinor for this pointer, in logical pixels.
read-only - radiusMin → double
-
The minimum value that could be reported for radiusMajor and radiusMinor for this pointer, in logical pixels.
read-only - radiusMinor → double
-
The radius of the contact ellipse along the minor axis, in logical pixels.
read-only - tilt → double
-
For PointerDeviceKind.stylus and PointerDeviceKind.invertedStylus events:
read-only - timeStamp → Duration
-
Time of event dispatch, relative to an arbitrary timeline.
read-only - hashCode → int
-
Get a hash code for this object.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
toString(
) → String -
Returns a string representation of this object.
-
toStringFull(
) → String -
Returns a complete textual description of this event.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited