com.trolltech.qt.gui
Class QGraphicsSceneDragDropEvent

java.lang.Object
  extended by com.trolltech.qt.internal.QSignalEmitterInternal
      extended by com.trolltech.qt.QSignalEmitter
          extended by com.trolltech.qt.QtJambiObject
              extended by com.trolltech.qt.core.QEvent
                  extended by com.trolltech.qt.gui.QGraphicsSceneEvent
                      extended by com.trolltech.qt.gui.QGraphicsSceneDragDropEvent
All Implemented Interfaces:
QtJambiInterface

public class QGraphicsSceneDragDropEvent
extends QGraphicsSceneEvent

The QGraphicsSceneDragDropEvent class provides events for drag and drop in the graphics view framework. QGraphicsView inherits the drag and drop functionality provided by QWidget. When it receives a drag and drop event, it translates it to a QGraphicsSceneDragDropEvent.

QGraphicsSceneDragDropEvent stores events of type GraphicsSceneDragEnter , GraphicsSceneDragLeave , GraphicsSceneDragMove , or GraphicsSceneDrop .

QGraphicsSceneDragDropEvent contains the position of the mouse cursor in both item, scene, and screen coordinates; this can be retrieved with pos(), scenePos(), and screenPos().

The scene sends the event to the first QGraphicsItem under the mouse cursor that accepts drops; a graphics item is set to accept drops with setAcceptDrops().


Nested Class Summary
 
Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent
QEvent.Type
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.PrivateSignal0, QSignalEmitter.PrivateSignal1, QSignalEmitter.PrivateSignal2, QSignalEmitter.PrivateSignal3, QSignalEmitter.PrivateSignal4, QSignalEmitter.PrivateSignal5, QSignalEmitter.PrivateSignal6, QSignalEmitter.PrivateSignal7, QSignalEmitter.PrivateSignal8, QSignalEmitter.PrivateSignal9, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9
 
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal
 
Field Summary
 
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
currentSender
 
Method Summary
 void acceptProposedAction()
          Sets the proposed action as accepted, i.
 Qt.MouseButtons buttons()
          Returns a Qt.:MouseButtons value indicating which buttons were pressed on the mouse when this mouse event was generated.
 Qt.DropAction dropAction()
          Returns the action that was performed in this drag and drop.
 QMimeData mimeData()
          This function returns the MIME data of the event.
 Qt.KeyboardModifiers modifiers()
          Returns the keyboard modifiers that were pressed when the drag and drop event was created.
 QPointF pos()
          Returns the mouse position of the event relative to the view that sent the event.
 Qt.DropActions possibleActions()
          Returns the possible drop actions that the drag and drop can result in.
 Qt.DropAction proposedAction()
          Returns the drop action that is proposed, i.
 QPointF scenePos()
          Returns the position of the mouse in scene coordinates.
 QPoint screenPos()
          Returns the position of the mouse relative to the screen.
 void setButtons(Qt.MouseButton[] buttons)
          This is an overloaded method provided for convenience.
 void setDropAction(Qt.DropAction action)
          This function lets the receiver of the drop set the drop action that was performed to action, which should be one of the possible actions.
 void setModifiers(Qt.KeyboardModifier[] modifiers)
          This is an overloaded method provided for convenience.
 void setPossibleActions(Qt.DropAction[] actions)
          This is an overloaded method provided for convenience.
 QWidget source()
          This function returns the QGraphicsView that created the QGraphicsSceneDragDropEvent.
 java.lang.String toString()
          Returns a string representation of the this QGraphicsSceneDragDropEvent.
 
Methods inherited from class com.trolltech.qt.gui.QGraphicsSceneEvent
widget
 
Methods inherited from class com.trolltech.qt.core.QEvent
accept, ignore, isAccepted, registerEventType, registerEventType, setAccepted, setT, spontaneous, t, type
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread
 
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
__qt_signalInitialization
 
Methods inherited from class java.lang.Object
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Method Detail

acceptProposedAction

public final void acceptProposedAction()
Sets the proposed action as accepted, i. , the drop action is set to the proposed action. This is equal to:
    setDropAction(proposedAction());
When using this function, one should not call accept().

See also:
dropAction(), setDropAction(), and proposedAction().


buttons

public final Qt.MouseButtons buttons()
Returns a Qt.:MouseButtons value indicating which buttons were pressed on the mouse when this mouse event was generated.

See also:
Qt::MouseButtons.


dropAction

public final Qt.DropAction dropAction()
Returns the action that was performed in this drag and drop. This should be set by the receiver of the drop and is returned by QDrag::start().

See also:
setDropAction(), and acceptProposedAction().


mimeData

public final QMimeData mimeData()
This function returns the MIME data of the event.


modifiers

public final Qt.KeyboardModifiers modifiers()
Returns the keyboard modifiers that were pressed when the drag and drop event was created.

See also:
Qt::KeyboardModifiers.


pos

public final QPointF pos()
Returns the mouse position of the event relative to the view that sent the event.

See also:
QGraphicsView, screenPos(), and scenePos().


possibleActions

public final Qt.DropActions possibleActions()
Returns the possible drop actions that the drag and drop can result in.

See also:
Qt::DropActions.


proposedAction

public final Qt.DropAction proposedAction()
Returns the drop action that is proposed, i. ., preferred. The action must be one of the possible actions as defined by possibleActions().

See also:
Qt::DropAction , and possibleActions().


scenePos

public final QPointF scenePos()
Returns the position of the mouse in scene coordinates.

See also:
pos(), and screenPos().


screenPos

public final QPoint screenPos()
Returns the position of the mouse relative to the screen.

See also:
pos(), and scenePos().


setButtons

public final void setButtons(Qt.MouseButton[] buttons)
This is an overloaded method provided for convenience.


setDropAction

public final void setDropAction(Qt.DropAction action)
This function lets the receiver of the drop set the drop action that was performed to action, which should be one of the possible actions. Call accept() in stead of acceptProposedAction() if you use this function.

See also:
dropAction(), accept(), and possibleActions().


setModifiers

public final void setModifiers(Qt.KeyboardModifier[] modifiers)
This is an overloaded method provided for convenience.


setPossibleActions

public final void setPossibleActions(Qt.DropAction[] actions)
This is an overloaded method provided for convenience.


source

public final QWidget source()
This function returns the QGraphicsView that created the QGraphicsSceneDragDropEvent.


toString

public java.lang.String toString()
Returns a string representation of the this QGraphicsSceneDragDropEvent.

Overrides:
toString in class QGraphicsSceneEvent