com.trolltech.qt.gui
Class QDragMoveEvent

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.QDropEvent
                      extended by com.trolltech.qt.gui.QDragMoveEvent
All Implemented Interfaces:
QtJambiInterface
Direct Known Subclasses:
QDragEnterEvent

public class QDragMoveEvent
extends QDropEvent

The QDragMoveEvent class provides an event which is sent while a drag and drop action is in progress. A widget will receive drag move events repeatedly while the drag is within its boundaries, if it accepts drop events and enter events. The widget should examine the event to see what kind of data it provides, and call the accept() function to accept the drop if appropriate.

The rectangle supplied by the answerRect() function can be used to restrict drops to certain parts of the widget. For example, we can check whether the rectangle intersects with the geometry of a certain child widget and only call acceptProposedAction() if that is the case.

Note that this class inherits most of its functionality from QDropEvent.

See also:
QDragEnterEvent, QDragLeaveEvent, and QDropEvent.


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
 
Constructor Summary
QDragMoveEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
          Creates a QDragMoveEvent of the required type indicating that the mouse is at position pos given within a widget.
QDragMoveEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers, QEvent.Type type)
          Creates a QDragMoveEvent of the required type indicating that the mouse is at position pos given within a widget.
 
Method Summary
 void accept(QRect r)
          The same as accept(), but also notifies that future moves will also be acceptable if they remain within the rectangle given on the widget.
 QRect answerRect()
          Returns the rectangle in the widget where the drop will occur if accepted.
 void ignore(QRect r)
          The opposite of the accept(const QRect&) function.
protected  QRect rect()
           
protected  void setRect(QRect rect)
           
 java.lang.String toString()
          Returns a string representation of the this QDragMoveEvent.
 
Methods inherited from class com.trolltech.qt.gui.QDropEvent
acceptProposedAction, act, default_action, drop_action, dropAction, keyboardModifiers, mdata, mimeData, modState, mouseButtons, mouseState, p, pos, possibleActions, proposedAction, setAct, setAct, setDefault_action, setDrop_action, setDropAction, setModState, setModState, setMouseState, setMouseState, setP, source
 
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
 

Constructor Detail

QDragMoveEvent

public QDragMoveEvent(QPoint pos,
                      Qt.DropActions actions,
                      QMimeData data,
                      Qt.MouseButtons buttons,
                      Qt.KeyboardModifiers modifiers)
Creates a QDragMoveEvent of the required type indicating that the mouse is at position pos given within a widget.

The mouse and keyboard states are specified by buttons and modifiers, and the actions describe the types of drag and drop operation that are possible. The drag data is passed as MIME-encoded information in data.

Warning: Do not attempt to create a QDragMoveEvent yourself. These objects rely on Qt's internal state.


QDragMoveEvent

public QDragMoveEvent(QPoint pos,
                      Qt.DropActions actions,
                      QMimeData data,
                      Qt.MouseButtons buttons,
                      Qt.KeyboardModifiers modifiers,
                      QEvent.Type type)
Creates a QDragMoveEvent of the required type indicating that the mouse is at position pos given within a widget.

The mouse and keyboard states are specified by buttons and modifiers, and the actions describe the types of drag and drop operation that are possible. The drag data is passed as MIME-encoded information in data.

Warning: Do not attempt to create a QDragMoveEvent yourself. These objects rely on Qt's internal state.

Method Detail

accept

public final void accept(QRect r)
The same as accept(), but also notifies that future moves will also be acceptable if they remain within the rectangle given on the widget. This can improve performance, but may also be ignored by the underlying system.

If the rectangle is empty, drag move events will be sent continuously. This is useful if the source is scrolling in a timer event.


answerRect

public final QRect answerRect()
Returns the rectangle in the widget where the drop will occur if accepted. You can use this information to restrict drops to certain places on the widget.


ignore

public final void ignore(QRect r)
The opposite of the accept(const QRect&) function. Moves within the rectangle are not acceptable, and will be ignored.


setRect

protected final void setRect(QRect rect)

rect

protected final QRect rect()

toString

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

Overrides:
toString in class QDropEvent