Class DragSourceEvent
- java.lang.Object
-
- java.util.EventObject
-
- java.awt.dnd.DragSourceEvent
- All Implemented Interfaces:
Serializable
- Direct Known Subclasses:
-
DragSourceDragEvent
,DragSourceDropEvent
public class DragSourceEvent extends EventObject
This class is the base class for 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:
- Serialized Form
Field Summary
Fields declared in class java.util.EventObject
source
Constructor Summary
Constructor | Description |
---|---|
DragSourceEvent(DragSourceContext dsc) | Construct a |
DragSourceEvent(DragSourceContext dsc,
int x,
int y) | Construct a |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
DragSourceContext | getDragSourceContext() | This method returns the |
Point | getLocation() | This method returns a |
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 declared in class java.util.EventObject
getSource, toString
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Constructor Detail
DragSourceEvent
public DragSourceEvent(DragSourceContext dsc)
Construct a DragSourceEvent
given a specified DragSourceContext
. The coordinates for this DragSourceEvent
are not specified, so getLocation
will return null
for this event.
- Parameters:
-
dsc
- theDragSourceContext
- Throws:
-
IllegalArgumentException
- ifdsc
isnull
. - See Also:
getLocation()
DragSourceEvent
public DragSourceEvent(DragSourceContext dsc, int x, int y)
Construct a DragSourceEvent
given a specified DragSourceContext
, and coordinates of the cursor location.
- Parameters:
-
dsc
- theDragSourceContext
-
x
- the horizontal coordinate for the cursor location -
y
- the vertical coordinate for the cursor location - Throws:
-
IllegalArgumentException
- ifdsc
isnull
. - Since:
- 1.4
Method Detail
getDragSourceContext
public DragSourceContext getDragSourceContext()
This method returns the DragSourceContext
that originated the event.
- Returns:
- the
DragSourceContext
that originated the event
getLocation
public Point getLocation()
This method returns a Point
indicating the cursor location in screen coordinates at the moment this event occurred, or null
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