|
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QEvent
com.trolltech.qt.gui.QDropEvent
public class QDropEvent
The QDropEvent class provides an event which is sent when a drag and drop action is completed.
When a widget accepts drop events, it will receive this event if it has accepted the most recent QDragEnterEvent or QDragMoveEvent sent to it.
The drop event contains a proposed action, available from proposedAction, for the widget to either accept or ignore. If the action can be handled by the widget, you should call the acceptProposedAction function. Since the proposed action can be a combination of Qt::DropAction values, it may be useful to either select one of these values as a default action or ask the user to select their preferred action.
If the proposed drop action is not suitable, perhaps because your custom widget does not support that action, you can replace it with any of the possible drop actions by calling setDropAction with your preferred action. If you set a value that is not present in the bitwise OR combination of values returned by possibleActions, the default copy action will be used. Once a replacement drop action has been set, call accept instead of acceptProposedAction to complete the drop operation.
The mimeData function provides the data dropped on the widget in a QMimeData object. This contains information about the MIME type of the data in addition to the data itself.
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.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I> |
Constructor Summary | |
---|---|
QDropEvent(QPoint pos,
Qt.DropActions actions,
QMimeData data,
Qt.MouseButtons buttons,
Qt.KeyboardModifiers modifiers)
Equivalent to QDropEvent(pos, actions, data, buttons, modifiers, Drop). |
|
QDropEvent(QPoint pos,
Qt.DropActions actions,
QMimeData data,
Qt.MouseButtons buttons,
Qt.KeyboardModifiers modifiers,
QEvent.Type type)
Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system. |
Method Summary | |
---|---|
void |
acceptProposedAction()
Sets the drop action to be the proposed action. |
Qt.DropAction |
dropAction()
Returns the action to be performed on the data by the target. |
static QDropEvent |
fromNativePointer(QNativePointer nativePointer)
This function returns the QDropEvent instance pointed to by nativePointer |
Qt.KeyboardModifiers |
keyboardModifiers()
Returns the modifier keys that are pressed. |
QMimeData |
mimeData()
Returns the data that was dropped on the widget and its associated MIME type information. |
Qt.MouseButtons |
mouseButtons()
Returns the mouse buttons that are pressed.. |
QPoint |
pos()
Returns the position where the drop was made. |
Qt.DropActions |
possibleActions()
Returns an OR-combination of possible drop actions. |
Qt.DropAction |
proposedAction()
Returns the proposed drop action. |
protected void |
setAct(Qt.DropAction... act)
Sets this QDropEvent's drop actions to act. |
void |
setDropAction(Qt.DropAction action)
Sets the action to be performed on the data by the target. |
protected void |
setModState(Qt.KeyboardModifier... modState)
This method sets the keyboard modifiers for this QDropEvent to modState. |
protected void |
setMouseState(Qt.MouseButton... mouseState)
Sets the mouse button state for this QDropEvent to mouseState. |
QWidget |
source()
If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0. |
Methods inherited from class com.trolltech.qt.core.QEvent |
---|
accept, ignore, isAccepted, setAccepted, setT, spontaneous, t, type |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
---|
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class java.lang.Object |
---|
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
---|
public QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
Equivalent to QDropEvent(pos, actions, data, buttons, modifiers, Drop).
public QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers, QEvent.Type type)
Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.
The actions indicate which types of drag and drop operation can be performed, and the drag data is stored as MIME-encoded data in data.
The states of the mouse buttons and keyboard modifiers at the time of the drop are specified by buttons and modifiers.
Method Detail |
---|
public final void acceptProposedAction()
Sets the drop action to be the proposed action.
public final Qt.DropAction dropAction()
Returns the action to be performed on the data by the target. This may be different from the action supplied in proposedAction if you have called setDropAction to explicitly choose a drop action.
public final Qt.KeyboardModifiers keyboardModifiers()
Returns the modifier keys that are pressed.
public final QMimeData mimeData()
Returns the data that was dropped on the widget and its associated MIME type information.
public final Qt.MouseButtons mouseButtons()
Returns the mouse buttons that are pressed..
public final QPoint pos()
Returns the position where the drop was made.
public final Qt.DropActions possibleActions()
Returns an OR-combination of possible drop actions.
public final Qt.DropAction proposedAction()
Returns the proposed drop action.
public final void setDropAction(Qt.DropAction action)
Sets the action to be performed on the data by the target. Use this to override the proposed action with one of the possible actions.
If you set a drop action that is not one of the possible actions, the drag and drop operation will default to a copy operation.
Once you have supplied a replacement drop action, call accept instead of acceptProposedAction.
public final QWidget source()
If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0. The source of the operation is the first parameter to the QDrag object used instantiate the drag.
This is useful if your widget needs special behavior when dragging to itself.
protected final void setModState(Qt.KeyboardModifier... modState)
protected final void setMouseState(Qt.MouseButton... mouseState)
protected final void setAct(Qt.DropAction... act)
public static QDropEvent fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
|
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |