Class DragSourceEvent
- All Implemented Interfaces:
Serializable
- Direct Known Subclasses:
DragSourceDragEvent
,DragSourceDropEvent
DragSourceDragEvent
and
DragSourceDropEvent
.
DragSourceEvent
s are generated whenever the drag enters, moves
over, or exits a drop site, when the drop action changes, and when the drag
ends. The location for the generated DragSourceEvent
specifies
the mouse cursor location in screen coordinates at the moment this event
occurred.
In a multi-screen environment without a virtual device, the cursor location is
specified in the coordinate system of the initiator
GraphicsConfiguration
. The initiator
GraphicsConfiguration
is the GraphicsConfiguration
of the Component
on which the drag gesture for the current drag
operation was recognized. If the cursor location is outside the bounds of
the initiator GraphicsConfiguration
, the reported coordinates are
clipped to fit within the bounds of that GraphicsConfiguration
.
In a multi-screen environment with a virtual device, the location is specified in the corresponding virtual coordinate system. If the cursor location is outside the bounds of the virtual device the reported coordinates are clipped to fit within the bounds of the virtual device.
- Since:
- 1.2
- See Also:
-
Field Summary
Fields inherited from class java.util.EventObject
source
-
Constructor Summary
ConstructorDescriptionConstruct aDragSourceEvent
given a specifiedDragSourceContext
.DragSourceEvent
(DragSourceContext dsc, int x, int y) Construct aDragSourceEvent
given a specifiedDragSourceContext
, and coordinates of the cursor location. -
Method Summary
Modifier and TypeMethodDescriptionThis method returns theDragSourceContext
that originated the event.This method returns aPoint
indicating the cursor location in screen coordinates at the moment this event occurred, ornull
if the cursor location is not specified for this event.int
getX()
This method returns the horizontal coordinate of the cursor location in screen coordinates at the moment this event occurred, or zero if the cursor location is not specified for this event.int
getY()
This method returns the vertical coordinate of the cursor location in screen coordinates at the moment this event occurred, or zero if the cursor location is not specified for this event.Methods inherited from class java.util.EventObject
getSource, toString
-
Constructor Details
-
DragSourceEvent
Construct aDragSourceEvent
given a specifiedDragSourceContext
. The coordinates for thisDragSourceEvent
are not specified, sogetLocation
will returnnull
for this event.- Parameters:
dsc
- theDragSourceContext
- Throws:
IllegalArgumentException
- ifdsc
isnull
.- See Also:
-
DragSourceEvent
Construct aDragSourceEvent
given a specifiedDragSourceContext
, and coordinates of the cursor location.- Parameters:
dsc
- theDragSourceContext
x
- the horizontal coordinate for the cursor locationy
- the vertical coordinate for the cursor location- Throws:
IllegalArgumentException
- ifdsc
isnull
.- Since:
- 1.4
-
-
Method Details
-
getDragSourceContext
This method returns theDragSourceContext
that originated the event.- Returns:
- the
DragSourceContext
that originated the event
-
getLocation
This method returns aPoint
indicating the cursor location in screen coordinates at the moment this event occurred, ornull
if the cursor location is not specified for this event.- Returns:
- the
Point
indicating the cursor location ornull
if the cursor location is not specified - Since:
- 1.4
-
getX
public int getX()This method returns the horizontal coordinate of the cursor location in screen coordinates at the moment this event occurred, or zero if the cursor location is not specified for this event.- Returns:
- an integer indicating the horizontal coordinate of the cursor location or zero if the cursor location is not specified
- Since:
- 1.4
-
getY
public int getY()This method returns the vertical coordinate of the cursor location in screen coordinates at the moment this event occurred, or zero if the cursor location is not specified for this event.- Returns:
- an integer indicating the vertical coordinate of the cursor location or zero if the cursor location is not specified
- Since:
- 1.4
-