MouseDragEvent

java.lang.Object
- java.util.EventObject
- - javafx.event.Event
  - - javafx.scene.input.InputEvent
    - - javafx.scene.input.MouseEvent
      - javafx.scene.input.MouseDragEvent

All Implemented Interfaces:

Serializable, Cloneable
```
public final class MouseDragEvent
extends MouseEvent
```
Mouse drag events are delivered to potential gesture targets during full press-drag-release gestures. The difference among different gesture types is described at MouseEvent.
Full press-drag-release gesture can be started by calling startFullDrag() (on a node or scene) inside of a DRAG_DETECTED event handler. This call activates delivering of MouseDragEvents to the nodes that are under cursor during the dragging gesture.

When you drag a node, it's still under cursor, so it is considered being a potential gesture target during the whole gesture. If you need to drag a node to a different node and let the other node know about it, you need to ensure that the nodes under the dragged node are picked as the potential gesture targets. You can achieve this by calling setMouseTransparent(true) on the dragged node in a MOUSE_PRESSED handler and returning it back to false in a MOUSE_RELEASED handler. This way the nodes under the dragged node will receive the MouseDragEvents, while all the MouseEvents will still be delivered to the (currently mouse transparent) gesture source.

The entered/exited events behave similarly to mouse entered/exited events, please see MouseEvent overview.

Since:

JavaFX 2.1

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static EventType<MouseDragEvent>`	`ANY`	Common supertype for all mouse event types.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_ENTERED`	This event occurs when the gesture enters a node.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_ENTERED_TARGET`	This event occurs when the gesture enters a node.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_EXITED`	This event occurs when the gesture exits a node.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_EXITED_TARGET`	This event occurs when the gesture exits a node.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_OVER`	This event occurs when the gesture progresses within this node.
`static EventType<MouseDragEvent>`	`MOUSE_DRAG_RELEASED`	This event occurs when the gesture ends (by releasing mouse button) on this node.

Fields inherited from class javafx.scene.input.MouseEvent
DRAG_DETECTED, MOUSE_CLICKED, MOUSE_DRAGGED, MOUSE_ENTERED, MOUSE_ENTERED_TARGET, MOUSE_EXITED, MOUSE_EXITED_TARGET, MOUSE_MOVED, MOUSE_PRESSED, MOUSE_RELEASED

Fields inherited from class javafx.event.Event
consumed, eventType, NULL_SOURCE_TARGET, target

Fields inherited from class java.util.EventObject
source

Constructor Summary

Constructors
Constructor	Description
`MouseDragEvent(Object source, EventTarget target, EventType<MouseDragEvent> eventType, double x, double y, double screenX, double screenY, MouseButton button, int clickCount, boolean shiftDown, boolean controlDown, boolean altDown, boolean metaDown, boolean primaryButtonDown, boolean middleButtonDown, boolean secondaryButtonDown, boolean synthesized, boolean popupTrigger, PickResult pickResult, Object gestureSource)`	Constructs new MouseDragEvent event.
`MouseDragEvent(EventType<MouseDragEvent> eventType, double x, double y, double screenX, double screenY, MouseButton button, int clickCount, boolean shiftDown, boolean controlDown, boolean altDown, boolean metaDown, boolean primaryButtonDown, boolean middleButtonDown, boolean secondaryButtonDown, boolean synthesized, boolean popupTrigger, PickResult pickResult, Object gestureSource)`	Constructs new MouseDragEvent event with null source and target.

Method Summary

All MethodsInstance MethodsConcrete Methods
Modifier and Type	Method	Description
`MouseDragEvent`	`copyFor(Object newSource, EventTarget newTarget)`	Copies this event for a different source and target.
`MouseDragEvent`	`copyFor(Object newSource, EventTarget newTarget, EventType<? extends MouseEvent> type)`	Creates a copy of the given event with the given fields substituted.
`EventType<MouseDragEvent>`	`getEventType()`	Gets the event type of this event.
`Object`	`getGestureSource()`	Returns the source object of the ongoing gesture.
`String`	`toString()`	Returns a string representation of this `MouseDragEvent` object.

Methods inherited from class javafx.scene.input.MouseEvent
copyForMouseDragEvent, getButton, getClickCount, getPickResult, getSceneX, getSceneY, getScreenX, getScreenY, getX, getY, getZ, isAltDown, isControlDown, isDragDetect, isMetaDown, isMiddleButtonDown, isPopupTrigger, isPrimaryButtonDown, isSecondaryButtonDown, isShiftDown, isShortcutDown, isStillSincePress, isSynthesized, setDragDetect

Methods inherited from class javafx.event.Event
clone, consume, fireEvent, getTarget, isConsumed

Methods inherited from class java.util.EventObject
getSource

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail
- ANY
```
public static final EventType<MouseDragEvent> ANY
```
  Common supertype for all mouse event types.
- MOUSE_DRAG_OVER
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_OVER
```
  This event occurs when the gesture progresses within this node.
- MOUSE_DRAG_RELEASED
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_RELEASED
```
  This event occurs when the gesture ends (by releasing mouse button) on this node.
- MOUSE_DRAG_ENTERED_TARGET
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_ENTERED_TARGET
```
  This event occurs when the gesture enters a node. It's the bubbling variant, which is delivered also to all parents of the entered node (unless it was consumed). When notifications about mouse entering some of node's children are not desired, MOUSE_DRAG_ENTERED event handler should be used.
  
  See Also:
  
  MouseEvent for more information about mouse entered/exited handling which is similar
- MOUSE_DRAG_ENTERED
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_ENTERED
```
  This event occurs when the gesture enters a node. This event type is delivered only to the entered node, if parents want to filter it or get the bubbling event, they need to use MOUSE_DRAG_ENTERED_TARGET.
  
  See Also:
  
  MouseEvent for more information about mouse entered/exited handling which is similar
- MOUSE_DRAG_EXITED_TARGET
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_EXITED_TARGET
```
  This event occurs when the gesture exits a node. It's the bubbling variant, which is delivered also to all parents of the exited node (unless it was consumed). When notifications about mouse exiting some of node's children are not desired, MOUSE_DRAG_EXITED event handler should be used.
  
  See Also:
  
  MouseEvent for more information about mouse entered/exited handling which is similar
- MOUSE_DRAG_EXITED
```
public static final EventType<MouseDragEvent> MOUSE_DRAG_EXITED
```
  This event occurs when the gesture exits a node. This event type is delivered only to the exited node, if parents want to filter it or get the bubbling event, they need to use MOUSE_DRAG_EXITED_TARGET.
  
  See Also:
  
  MouseEvent for more information about mouse entered/exited handling which is similar

Constructor Detail
- MouseDragEvent
```
public MouseDragEvent(Object source,
                      EventTarget target,
                      EventType<MouseDragEvent> eventType,
                      double x,
                      double y,
                      double screenX,
                      double screenY,
                      MouseButton button,
                      int clickCount,
                      boolean shiftDown,
                      boolean controlDown,
                      boolean altDown,
                      boolean metaDown,
                      boolean primaryButtonDown,
                      boolean middleButtonDown,
                      boolean secondaryButtonDown,
                      boolean synthesized,
                      boolean popupTrigger,
                      PickResult pickResult,
                      Object gestureSource)
```
  Constructs new MouseDragEvent event.
  
  Parameters:
  
  source - the source of the event. Can be null.
  
  target - the target of the event. Can be null.
  
  eventType - The type of the event.
  
  x - The x with respect to the scene.
  
  y - The y with respect to the scene.
  
  screenX - The x coordinate relative to screen.
  
  screenY - The y coordinate relative to screen.
  
  button - the mouse button used
  
  clickCount - number of click counts
  
  shiftDown - true if shift modifier was pressed.
  
  controlDown - true if control modifier was pressed.
  
  altDown - true if alt modifier was pressed.
  
  metaDown - true if meta modifier was pressed.
  
  primaryButtonDown - true if primary button was pressed.
  
  middleButtonDown - true if middle button was pressed.
  
  secondaryButtonDown - true if secondary button was pressed.
  
  synthesized - if this event was synthesized
  
  popupTrigger - whether this event denotes a popup trigger for current platform
  
  pickResult - pick result. Can be null, in this case a 2D pick result without any further values is constructed based on the scene coordinates and target
  
  gestureSource - source object of the ongoing gesture.
  
  Since:
  
  JavaFX 8.0
- MouseDragEvent
```
public MouseDragEvent(EventType<MouseDragEvent> eventType,
                      double x,
                      double y,
                      double screenX,
                      double screenY,
                      MouseButton button,
                      int clickCount,
                      boolean shiftDown,
                      boolean controlDown,
                      boolean altDown,
                      boolean metaDown,
                      boolean primaryButtonDown,
                      boolean middleButtonDown,
                      boolean secondaryButtonDown,
                      boolean synthesized,
                      boolean popupTrigger,
                      PickResult pickResult,
                      Object gestureSource)
```
  Constructs new MouseDragEvent event with null source and target.
  
  Parameters:
  
  eventType - The type of the event.
  
  x - The x with respect to the scene.
  
  y - The y with respect to the scene.
  
  screenX - The x coordinate relative to screen.
  
  screenY - The y coordinate relative to screen.
  
  button - the mouse button used
  
  clickCount - number of click counts
  
  shiftDown - true if shift modifier was pressed.
  
  controlDown - true if control modifier was pressed.
  
  altDown - true if alt modifier was pressed.
  
  metaDown - true if meta modifier was pressed.
  
  primaryButtonDown - true if primary button was pressed.
  
  middleButtonDown - true if middle button was pressed.
  
  secondaryButtonDown - true if secondary button was pressed.
  
  synthesized - if this event was synthesized
  
  popupTrigger - whether this event denotes a popup trigger for current platform
  
  pickResult - pick result. Can be null, in this case a 2D pick result without any further values is constructed based on the scene coordinates
  
  gestureSource - source object of the ongoing gesture.
  
  Since:
  
  JavaFX 8.0

Method Detail
- getGestureSource
```
public Object getGestureSource()
```
  Returns the source object of the ongoing gesture. Gesture source is the object that started the full press-drag-release gesture (by startFullDrag method being called on it).
  
  Returns:
  
  The source object of the gesture.
- toString
```
public String toString()
```
  Returns a string representation of this MouseDragEvent object.
  
  Overrides:
  
  toString in class MouseEvent
  
  Returns:
  
  a string representation of this MouseDragEvent object.
- copyFor
```
public MouseDragEvent copyFor(Object newSource,
                              EventTarget newTarget)
```
  Description copied from class: MouseEvent
  
  Copies this event for a different source and target. In most cases you don't need to use this method, it's called automatically when you fire the event.
  
  Overrides:
  
  copyFor in class MouseEvent
  
  Parameters:
  
  newSource - New event source
  
  newTarget - New event target
  
  Returns:
  
  copy of this event for a different source and target
- copyFor
```
public MouseDragEvent copyFor(Object newSource,
                              EventTarget newTarget,
                              EventType<? extends MouseEvent> type)
```
  Description copied from class: MouseEvent
  
  Creates a copy of the given event with the given fields substituted.
  
  Overrides:
  
  copyFor in class MouseEvent
  
  Parameters:
  
  newSource - the new source of the copied event
  
  newTarget - the new target of the copied event
  
  type - the new eventType
  
  Returns:
  
  the event copy with the fields substituted
- getEventType
```
public EventType<MouseDragEvent> getEventType()
```
  Description copied from class: Event
  
  Gets the event type of this event. Objects of the same Event class can have different event types. These event types further specify what kind of event occurred.
  
  Overrides:
  
  getEventType in class MouseEvent
  
  Returns:
  
  the event type

© 2008, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Class MouseDragEvent

Field Summary

Fields inherited from class javafx.scene.input.MouseEvent

Fields inherited from class javafx.event.Event

Fields inherited from class java.util.EventObject

Constructor Summary

Method Summary

Methods inherited from class javafx.scene.input.MouseEvent

Methods inherited from class javafx.event.Event

Methods inherited from class java.util.EventObject

Methods inherited from class java.lang.Object

Field Detail

ANY

MOUSE_DRAG_OVER

MOUSE_DRAG_RELEASED

MOUSE_DRAG_ENTERED_TARGET

MOUSE_DRAG_ENTERED

MOUSE_DRAG_EXITED_TARGET

MOUSE_DRAG_EXITED

Constructor Detail

MouseDragEvent

Method Detail

getGestureSource

toString

copyFor

copyFor

getEventType