Class GestureEvent

All Implemented Interfaces:
Serializable

public class GestureEvent extends TypedEvent
Instances of this class are sent in response to touch-based gestures that are triggered by the user.
Since:
3.7
See Also:
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    int
    The gesture type.
    boolean
    This flag indicates whether the operation should be allowed.
    double
    This field is valid when the detail field is set to GESTURE_MAGNIFY.
    double
    This field is valid when the detail field is set to GESTURE_ROTATE.
    int
    The state of the keyboard modifier keys and mouse masks at the time the event was generated.
    int
    The meaning of this field is dependent on the value of the detail field and the platform.
    int
    This field is valid when the detail field is set to GESTURE_SWIPE or GESTURE_PAN.
    int
    The meaning of this field is dependent on the value of the detail field and the platform.
    int
    This field is valid when the detail field is set to GESTURE_SWIPE or GESTURE_PAN.

    Fields inherited from class org.eclipse.swt.events.TypedEvent

    data, display, time, widget

    Fields inherited from class java.util.EventObject

    source
  • Constructor Summary

    Constructors
    Constructor
    Description
    Constructs a new instance of this class based on the information in the given untyped event.
  • Method Summary

    Modifier and Type
    Method
    Description
    Returns a string containing a concise, human-readable description of the receiver.

    Methods inherited from class java.util.EventObject

    getSource

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
  • Field Details

    • stateMask

      public int stateMask
      The state of the keyboard modifier keys and mouse masks at the time the event was generated.
      See Also:
    • detail

      public int detail
      The gesture type. This field determines the GestureEvent fields that contain valid data.
    • x

      public int x
      The meaning of this field is dependent on the value of the detail field and the platform. It can represent either the x coordinate of the centroid of the touches that make up the gesture, or the x coordinate of the cursor at the time the gesture was performed.
    • y

      public int y
      The meaning of this field is dependent on the value of the detail field and the platform. It can represent either the y coordinate of the centroid of the touches that make up the gesture, or the y coordinate of the cursor at the time the gesture was performed.
    • rotation

      public double rotation
      This field is valid when the detail field is set to GESTURE_ROTATE. It specifies the number of degrees rotated on the device since the gesture started. Positive values indicate counter-clockwise rotation, and negative values indicate clockwise rotation.
    • xDirection

      public int xDirection
      This field is valid when the detail field is set to GESTURE_SWIPE or GESTURE_PAN. Both xDirection and yDirection can be valid for an individual gesture. The meaning of this field is dependent on the value of the detail field.

      If detail is GESTURE_SWIPE then a positive value indicates a swipe to the right and a negative value indicates a swipe to the left. If detail is GESTURE_PAN then a positive value indicates a pan to the right by this field's count of points and a negative value indicates a pan to the left by this field's count of points.

    • yDirection

      public int yDirection
      This field is valid when the detail field is set to GESTURE_SWIPE or GESTURE_PAN. Both xDirection and yDirection can be valid for an individual gesture. The meaning of this field is dependent on the value of the detail field. If detail is GESTURE_SWIPE then a positive value indicates a downward swipe and a negative value indicates an upward swipe. If detail is GESTURE_PAN then a positive value indicates a downward pan by this field's count of points and a negative value indicates an upward pan by this field's count of points.
    • magnification

      public double magnification
      This field is valid when the detail field is set to GESTURE_MAGNIFY. This is the scale factor to be applied. This value will be 1.0 in the first received event with GESTURE_MAGNIFY, and will then fluctuate in subsequent events as the user moves their fingers.
    • doit

      public boolean doit
      This flag indicates whether the operation should be allowed. Setting it to false will cancel the operation.
  • Constructor Details

    • GestureEvent

      public GestureEvent(Event e)
      Constructs a new instance of this class based on the information in the given untyped event.
      Parameters:
      e - the untyped event containing the information
  • Method Details

    • toString

      public String toString()
      Returns a string containing a concise, human-readable description of the receiver.
      Overrides:
      toString in class TypedEvent
      Returns:
      a string representation of the event