void QWidgetWindow::handleDragEnterMoveEvent(QDragMoveEvent *event)
{
Q_ASSERT(event->type() ==QEvent::DragMove || !m_dragTarget);
// Find a target widget under mouse that accepts drops (QTBUG-22987).
QWidget *widget = m_widget->childAt(event->pos());
if (!widget)
widget = m_widget;
for ( ; widget && !widget->isWindow() && !widget->acceptDrops(); widget = widget->parentWidget()) ;
if (widget && !widget->acceptDrops())
widget = 0;
// Target widget unchanged: DragMove
if (widget && widget == m_dragTarget.data()) {
Q_ASSERT(event->type() == QEvent::DragMove);
const QPoint mapped = widget->mapFromGlobal(m_widget->mapToGlobal(event->pos()));
QDragMoveEvent translated(mapped, event->possibleActions(), event->mimeData(), event->mouseButtons(), event->keyboardModifiers());
translated.setDropAction(event->dropAction());
if (event->isAccepted()) { // Handling 'DragEnter' should suffice for the application.
translated.accept();
translated.setDropAction(event->dropAction());
}
QGuiApplication::sendSpontaneousEvent(widget, &translated);
if (translated.isAccepted()) {
event->accept();
} else {
event->ignore();
}
event->setDropAction(translated.dropAction());
return;
}
// Target widget changed: Send DragLeave to previous, DragEnter to new if there is any
if (m_dragTarget.data()) {
QDragLeaveEvent le;
QGuiApplication::sendSpontaneousEvent(m_dragTarget.data(), &le);
m_dragTarget = 0;
}
if (!widget) {
event->ignore();
return;
}
m_dragTarget = widget;
const QPoint mapped = widget->mapFromGlobal(m_widget->mapToGlobal(event->pos()));
QDragEnterEvent translated(mapped, event->possibleActions(), event->mimeData(), event->mouseButtons(), event->keyboardModifiers());
QGuiApplication::sendSpontaneousEvent(widget, &translated);
if (translated.isAccepted()) {
event->accept();
} else {
event->ignore();
}
event->setDropAction(translated.dropAction());
}
static void qt_xdnd_send_leave()
{
if ( !qt_xdnd_current_target )
return;
XClientMessageEvent leave;
leave.type = ClientMessage;
leave.window = qt_xdnd_current_target;
leave.format = 32;
leave.message_type = qt_xdnd_leave;
leave.data.l[0] = qt_xdnd_dragsource_xid;
leave.data.l[1] = 0; // flags
leave.data.l[2] = 0; // x, y
leave.data.l[3] = 0; // w, h
leave.data.l[4] = 0; // just null
QWidget * w = QWidget::find( qt_xdnd_current_target );
int emask = NoEventMask;
if ( w && w->isDesktop() && !w->acceptDrops() ) {
emask = EnterWindowMask;
w = 0;
}
if ( w )
qt_handle_xdnd_leave( w, (const XEvent *)&leave );
else
XSendEvent( qt_xdisplay(), qt_xdnd_current_target, FALSE,
emask, (XEvent*)&leave );
qt_xdnd_current_target = 0;
}
void QDragManager::drop()
{
if ( !qt_xdnd_current_target )
return;
delete qt_xdnd_deco;
qt_xdnd_deco = 0;
XClientMessageEvent drop;
drop.type = ClientMessage;
drop.window = qt_xdnd_current_target;
drop.format = 32;
drop.message_type = qt_xdnd_drop;
drop.data.l[0] = object->source()->winId();
drop.data.l[1] = 1 << 24; // flags
drop.data.l[2] = 0; // ###
drop.data.l[3] = qt_x_clipboardtime;
drop.data.l[4] = 0;
QWidget * w = QWidget::find( qt_xdnd_current_target );
int emask = NoEventMask;
if ( w && w->isDesktop() && !w->acceptDrops() ) {
emask = EnterWindowMask;
w = 0;
}
if ( w )
qt_handle_xdnd_drop( w, (const XEvent *)&drop );
else
XSendEvent( qt_xdisplay(), qt_xdnd_current_target, FALSE, emask,
(XEvent*)&drop );
qt_xdnd_current_target = 0;
if ( restoreCursor ) {
QApplication::restoreOverrideCursor();
restoreCursor = FALSE;
}
}
bool QDragManager::eventFilter(QObject *o, QEvent *e)
{
if (beingCancelled) {
if (e->type() == QEvent::KeyRelease && static_cast<QKeyEvent*>(e)->key() == Qt::Key_Escape) {
qApp->removeEventFilter(this);
Q_ASSERT(object == 0);
beingCancelled = false;
#ifndef QT_NO_LOCALEVENTLOOP
eventLoop->exit();
#else
asyncDragFinished();
#endif
return true; // block the key release
}
return false;
}
if (!o->isWidgetType())
return false;
switch(e->type()) {
case QEvent::ShortcutOverride:
// prevent accelerators from firing while dragging
e->accept();
return true;
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
QKeyEvent *ke = ((QKeyEvent*)e);
if (ke->key() == Qt::Key_Escape && e->type() == QEvent::KeyPress) {
cancel();
qApp->removeEventFilter(this);
beingCancelled = false;
#ifndef QT_NO_LOCALEVENTLOOP
eventLoop->exit();
#else
asyncDragFinished();
#endif
} else {
updateCursor();
}
return true; // Eat all key events
}
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
{
if (!object) { //#### this should not happen
qWarning("QDragManager::eventFilter: No object");
return true;
}
QDragManager *manager = QDragManager::self();
QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
if (manager->object)
possible_actions = manager->dragPrivate()->possible_actions;
else
possible_actions = Qt::IgnoreAction;
QMouseEvent *me = (QMouseEvent *)e;
if (me->buttons()) {
Qt::DropAction prevAction = global_accepted_action;
QWidget *cw = QApplication::widgetAt(me->globalPos());
// Fix for when we move mouse on to the deco widget
if (qt_qws_dnd_deco && cw == qt_qws_dnd_deco)
cw = object->target();
while (cw && !cw->acceptDrops() && !cw->isWindow())
cw = cw->parentWidget();
if (object->target() != cw) {
if (object->target()) {
QDragLeaveEvent dle;
QApplication::sendEvent(object->target(), &dle);
willDrop = false;
global_accepted_action = Qt::IgnoreAction;
updateCursor();
restoreCursor = true;
object->d_func()->target = 0;
}
if (cw && cw->acceptDrops()) {
object->d_func()->target = cw;
QDragEnterEvent dee(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
QApplication::sendEvent(object->target(), &dee);
willDrop = dee.isAccepted() && dee.dropAction() != Qt::IgnoreAction;
global_accepted_action = willDrop ? dee.dropAction() : Qt::IgnoreAction;
updateCursor();
restoreCursor = true;
}
} else if (cw) {
QDragMoveEvent dme(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
if (global_accepted_action != Qt::IgnoreAction) {
dme.setDropAction(global_accepted_action);
dme.accept();
}
QApplication::sendEvent(cw, &dme);
willDrop = dme.isAccepted();
global_accepted_action = willDrop ? dme.dropAction() : Qt::IgnoreAction;
updatePixmap();
updateCursor();
}
if (global_accepted_action != prevAction)
emitActionChanged(global_accepted_action);
}
return true; // Eat all mouse events
}
case QEvent::MouseButtonRelease:
{
qApp->removeEventFilter(this);
if (restoreCursor) {
willDrop = false;
#ifndef QT_NO_CURSOR
QApplication::restoreOverrideCursor();
#endif
restoreCursor = false;
}
if (object && object->target()) {
QMouseEvent *me = (QMouseEvent *)e;
QDragManager *manager = QDragManager::self();
QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
QDropEvent de(object->target()->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
QApplication::sendEvent(object->target(), &de);
if (de.isAccepted())
global_accepted_action = de.dropAction();
else
global_accepted_action = Qt::IgnoreAction;
if (object)
object->deleteLater();
drag_object = object = 0;
}
#ifndef QT_NO_LOCALEVENTLOOP
eventLoop->exit();
#else
asyncDragFinished();
#endif
return true; // Eat all mouse events
}
default:
break;
}
return false;
}
bool QDragManager::eventFilter( QObject *o, QEvent *e )
{
if ( !o->isWidgetType() )
return FALSE;
switch( e->type() ) {
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
QKeyEvent *ke = ((QKeyEvent*)e);
if ( ke->key() == Key_Escape && e->type() == QEvent::KeyPress ) {
cancel();
qApp->removeEventFilter( this );
dragSource = 0;
} else {
updateMode(ke->stateAfter());
updateCursor();
}
return TRUE; // Eat all key events
}
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
{
QMouseEvent *me = (QMouseEvent *)e;
if ( me->state() & ( QMouseEvent::LeftButton | QMouseEvent::MidButton | QMouseEvent::RightButton ) ) {
QWidget *cw = QApplication::widgetAt( me->globalPos(), TRUE );
// Fix for when we move mouse on to the deco widget
if ( qt_qws_dnd_deco && cw == qt_qws_dnd_deco )
cw = dropWidget;
if ( dropWidget != cw ) {
if ( dropWidget ) {
QDragLeaveEvent dle;
QApplication::sendEvent( dropWidget, &dle );
willDrop = FALSE;
updateCursor();
restoreCursor = TRUE;
dropWidget = NULL;
}
if ( cw && cw->acceptDrops() ) {
dropWidget = cw;
QDragEnterEvent dee( me->pos() );
QApplication::sendEvent( dropWidget, &dee );
willDrop = dee.isAccepted();
updateCursor();
restoreCursor = TRUE;
}
} else if ( cw ) {
QDragMoveEvent dme( me->pos() );
QApplication::sendEvent( cw, &dme );
updatePixmap();
}
}
return TRUE; // Eat all mouse events
}
case QEvent::MouseButtonRelease:
{
qApp->removeEventFilter( this );
if ( qt_qws_dnd_deco )
delete qt_qws_dnd_deco;
qt_qws_dnd_deco = 0;
if ( restoreCursor ) {
willDrop = FALSE;
myRestoreOverrideCursor();
restoreCursor = FALSE;
}
if ( dropWidget ) {
QMouseEvent *me = (QMouseEvent *)e;
QDropEvent de( me->pos() );
QApplication::sendEvent( dropWidget, &de );
dropWidget = NULL;
}
return TRUE; // Eat all mouse events
}
default:
break;
}
return FALSE;
}
void QX11Data::motifdndHandle(QWidget *widget, const XEvent * xe, bool /* passive */)
{
XEvent event = *xe;
XClientMessageEvent cm ;
DndData dnd_data ;
char receiver ;
if (!(DndParseClientMessage ((XClientMessageEvent*)&event,
&dnd_data, &receiver))) {
return;
}
switch (dnd_data.reason) {
case DND_DRAG_MOTION:
{
QPoint p = widget->mapFromGlobal(QPoint(dnd_data.x, dnd_data.y));
QWidget *c = widget->childAt(p);
if (!c || !c->acceptDrops()) {
// not over a drop site
if (dropWidget) {
QDragLeaveEvent dragLeaveEvent;
QApplication::sendEvent(dropWidget, &dragLeaveEvent);
dropWidget = 0;
lastAcceptedAction = Qt::IgnoreAction;
dnd_data.reason = DND_DROP_SITE_LEAVE;
dnd_data.time = X11->time;
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, receiver);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm) ;
} else {
dnd_data.reason = DND_DRAG_MOTION;
dnd_data.status = DND_NO_DROP_SITE;
dnd_data.time = X11->time;
dnd_data.operation = DND_NOOP;
dnd_data.operations = DND_NOOP;
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, receiver);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm) ;
}
} else {
Q_ASSERT(c != 0);
p = c->mapFrom(widget, p);
if (dropWidget != c) {
if (dropWidget) {
QDragLeaveEvent le;
QApplication::sendEvent(dropWidget, &le);
}
dropWidget = c;
lastAcceptedAction = Qt::IgnoreAction;
const Qt::DropActions possibleActions =
DndOperationsToQtDropActions(dnd_data.operations);
QDragEnterEvent de(p, possibleActions, QDragManager::self()->dropData,
QApplication::mouseButtons(), QApplication::keyboardModifiers());
QApplication::sendEvent(dropWidget, &de);
dnd_data.reason = DND_DROP_SITE_ENTER;
dnd_data.time = X11->time;
if (de.isAccepted()) {
lastAcceptedAction = de.dropAction();
dnd_data.status = DND_VALID_DROP_SITE;
dnd_data.operation = QtDropActionToDndOperation(lastAcceptedAction);
} else {
dnd_data.status = DND_INVALID_DROP_SITE;
dnd_data.operation = DND_NOOP;
dnd_data.operations = DND_NOOP;
}
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, receiver);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm);
} else {
const Qt::DropActions possibleActions =
DndOperationsToQtDropActions(dnd_data.operations);
QDragMoveEvent me(p, possibleActions, QDragManager::self()->dropData,
QApplication::mouseButtons(), QApplication::keyboardModifiers());
if (lastAcceptedAction != Qt::IgnoreAction) {
me.setDropAction(lastAcceptedAction);
me.accept();
}
QApplication::sendEvent(dropWidget, &me);
dnd_data.reason = DND_DRAG_MOTION;
dnd_data.time = X11->time;
if (me.isAccepted()) {
lastAcceptedAction = me.dropAction();
dnd_data.status = DND_VALID_DROP_SITE;
dnd_data.operation = QtDropActionToDndOperation(lastAcceptedAction);
} else {
dnd_data.status = DND_INVALID_DROP_SITE;
dnd_data.operation = DND_NOOP;
dnd_data.operations = DND_NOOP;
}
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, receiver);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm);
}
}
break;
}
case DND_TOP_LEVEL_ENTER:
{
/* get the size of our drop site for later use */
motifdnd_active = true;
sourceWindow = dnd_data.src_window;
/* no answer needed, just read source property */
DndReadSourceProperty (event.xclient.display,
sourceWindow,
dnd_data.property,
&src_targets, &num_src_targets);
break;
}
case DND_TOP_LEVEL_LEAVE:
{
XEvent nextEvent;
if (XCheckTypedWindowEvent(X11->display, widget->winId(), ClientMessage, &nextEvent)) {
// we just want to check, not eat (should use XPeekIfEvent)
XPutBackEvent(X11->display, &nextEvent);
if (DndParseClientMessage (&nextEvent.xclient, &dnd_data, &receiver)
&& dnd_data.reason == DND_DROP_START) {
// expecting drop next, keeping DnD alive
break;
}
}
// not expecting drop, need to send drag leave events and such here
if (dropWidget) {
QDragLeaveEvent le;
QApplication::sendEvent(dropWidget, &le);
}
sourceWindow = XNone;
dropWidget = 0;
lastAcceptedAction = Qt::IgnoreAction;
motifdnd_active = false;
break;
}
case DND_OPERATION_CHANGED:
// ### need to echo
break;
case DND_DROP_START:
{
Q_ASSERT(motifdnd_active);
Q_ASSERT(sourceWindow == dnd_data.src_window);
if (!dropWidget || lastAcceptedAction == Qt::IgnoreAction) {
// echo DROP_START
dnd_data.reason = DND_DROP_START;
dnd_data.status = DND_NO_DROP_SITE;
dnd_data.operation = DND_NOOP;
dnd_data.operations = DND_NOOP;
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, 0);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm);
// we have to convert selection in order to indicate failure to the initiator
XConvertSelection (X11->display, dnd_data.property, ATOM(XmTRANSFER_FAILURE),
dnd_data.property, dnd_data.src_window, dnd_data.time);
if (dropWidget) {
QDragLeaveEvent e;
QApplication::sendEvent(dropWidget, &e);
}
motifdnd_active = false;
sourceWindow = XNone;
dropWidget = 0;
lastAcceptedAction = Qt::IgnoreAction;
return;
}
// store selection and its time
Dnd_selection = dnd_data.property;
Dnd_selection_time = dnd_data.time;
QPoint p(dnd_data.x, dnd_data.y);
QDropEvent de(dropWidget->mapFromGlobal(p), Qt::CopyAction, QDragManager::self()->dropData,
QApplication::mouseButtons(), QApplication::keyboardModifiers());
if (lastAcceptedAction != Qt::IgnoreAction) {
de.setDropAction(lastAcceptedAction);
de.accept();
}
QApplication::sendEvent(dropWidget, &de);
// reset
Dnd_selection = XNone;
Dnd_selection_time = 0;
// echo DROP_START depending on the result of the dropEvent
if (de.isAccepted()) {
dnd_data.reason = DND_DROP_START;
dnd_data.status = DND_VALID_DROP_SITE;
dnd_data.operation = QtDropActionToDndOperation(de.dropAction());
} else {
dnd_data.reason = DND_DROP_START;
dnd_data.status = DND_NO_DROP_SITE;
dnd_data.operation = DND_NOOP;
dnd_data.operations = DND_NOOP;
}
DndFillClientMessage (event.xclient.display, sourceWindow, &cm, &dnd_data, 0);
XSendEvent(event.xbutton.display, sourceWindow, False, 0, (XEvent *)&cm);
sourceWindow = XNone;
dropWidget = 0;
lastAcceptedAction = Qt::IgnoreAction;
motifdnd_active = false;
break;
}
default:
break;
} // end of switch (dnd_data.reason)
}
bool QDragManager::eventFilter(QObject *o, QEvent *e)
{
if (beingCancelled) {
return false;
}
if (!o->isWidgetType())
return false;
switch(e->type()) {
case QEvent::MouseButtonPress:
{
}
case QEvent::MouseMove:
{
if (!object) { //#### this should not happen
qWarning("QDragManager::eventFilter: No object");
return true;
}
QDragManager *manager = QDragManager::self();
QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
if (manager->object)
possible_actions = manager->dragPrivate()->possible_actions;
else
possible_actions = Qt::IgnoreAction;
QMouseEvent *me = (QMouseEvent *)e;
if (me->buttons()) {
Qt::DropAction prevAction = global_accepted_action;
QWidget *cw = QApplication::widgetAt(me->globalPos());
// map the Coords relative to the window.
if (!cw)
return true;
while (cw && !cw->acceptDrops() && !cw->isWindow())
cw = cw->parentWidget();
bool oldWillDrop = willDrop;
if (object->target() != cw) {
if (object->target()) {
QDragLeaveEvent dle;
QApplication::sendEvent(object->target(), &dle);
willDrop = false;
global_accepted_action = Qt::IgnoreAction;
if (oldWillDrop != willDrop)
updateCursor();
object->d_func()->target = 0;
}
if (cw && cw->acceptDrops()) {
object->d_func()->target = cw;
QDragEnterEvent dee(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
QApplication::sendEvent(object->target(), &dee);
willDrop = dee.isAccepted() && dee.dropAction() != Qt::IgnoreAction;
global_accepted_action = willDrop ? dee.dropAction() : Qt::IgnoreAction;
if (oldWillDrop != willDrop)
updateCursor();
}
} else if (cw) {
QDragMoveEvent dme(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
if (global_accepted_action != Qt::IgnoreAction) {
dme.setDropAction(global_accepted_action);
dme.accept();
}
QApplication::sendEvent(cw, &dme);
willDrop = dme.isAccepted();
global_accepted_action = willDrop ? dme.dropAction() : Qt::IgnoreAction;
if (oldWillDrop != willDrop) {
updatePixmap();
updateCursor();
}
}
if (global_accepted_action != prevAction)
emitActionChanged(global_accepted_action);
}
return true; // Eat all mouse events
}
case QEvent::MouseButtonRelease:
{
qApp->removeEventFilter(this);
#ifndef QT_NO_CURSOR
if (restoreCursor) {
QApplication::restoreOverrideCursor();
willDrop = false;
restoreCursor = false;
}
#endif
if (object && object->target()) {
QMouseEvent *me = (QMouseEvent *)e;
QDragManager *manager = QDragManager::self();
QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
QDropEvent de(object->target()->mapFromGlobal(me->globalPos()), possible_actions, dropData,
me->buttons(), me->modifiers());
QApplication::sendEvent(object->target(), &de);
if (de.isAccepted())
global_accepted_action = de.dropAction();
else
global_accepted_action = Qt::IgnoreAction;
if (object)
object->deleteLater();
drag_object = object = 0;
}
eventLoop->exit();
return true; // Eat all mouse events
}
default:
break;
}
return false;
}
static QByteArray qt_xdnd_obtain_data( const char * format )
{
QByteArray result;
QWidget* w;
if ( qt_xdnd_dragsource_xid && qt_xdnd_source_object &&
(w=QWidget::find( qt_xdnd_dragsource_xid ))
&& (!w->isDesktop() || w->acceptDrops()) )
{
QDragObject * o = qt_xdnd_source_object;
if ( o->provides( format ) )
result = o->encodedData(format);
return result;
}
Atom * a = qt_xdnd_str_to_atom( format );
if ( !a || !*a )
return result;
if ( !qt_xdnd_target_data )
qt_xdnd_target_data = new QIntDict<QByteArray>( 17 );
if ( qt_xdnd_target_data->find( (int)*a ) ) {
result = *(qt_xdnd_target_data->find( (int)*a ));
} else {
if ( XGetSelectionOwner( qt_xdisplay(),
qt_xdnd_selection ) == None )
return result; // should never happen?
QWidget* tw = qt_xdnd_current_widget;
if ( !tw || qt_xdnd_current_widget->isDesktop() ) {
tw = new QWidget;
}
XConvertSelection( qt_xdisplay(),
qt_xdnd_selection, *a,
qt_xdnd_selection,
tw->winId(), CurrentTime );
XFlush( qt_xdisplay() );
XEvent xevent;
bool got=qt_xclb_wait_for_event( qt_xdisplay(),
tw->winId(),
SelectionNotify, &xevent, 5000);
if ( got ) {
Atom type;
if ( qt_xclb_read_property( qt_xdisplay(),
tw->winId(),
qt_xdnd_selection, TRUE,
&result, 0, &type, 0, FALSE ) ) {
if ( type == qt_incr_atom ) {
int nbytes = result.size() >= 4 ? *((int*)result.data()) : 0;
result = qt_xclb_read_incremental_property( qt_xdisplay(),
tw->winId(),
qt_xdnd_selection,
nbytes, FALSE );
} else if ( type != *a ) {
// (includes None) debug( "Qt clipboard: unknown atom %ld", type);
}
if ( type != None )
qt_xdnd_target_data->insert( (int)((long)a), new QByteArray(result) );
}
}
if ( !qt_xdnd_current_widget || qt_xdnd_current_widget->isDesktop() ) {
delete tw;
}
}
return result;
}
void QDragManager::move( const QPoint & globalPos )
{
if ( qt_xdnd_source_sameanswer.contains( globalPos ) &&
qt_xdnd_source_sameanswer.isValid() &&
!qt_xdnd_source_sameanswer.isEmpty() ) { // ### probably unnecessary
return;
}
if ( qt_xdnd_deco ) {
qt_xdnd_deco->move(globalPos-qt_xdnd_source_object->pixmapHotSpot());
qt_xdnd_deco->raise();
}
Window target = 0;
int lx = 0, ly = 0;
if ( !XTranslateCoordinates( qt_xdisplay(), qt_xrootwin(), qt_xrootwin(),
globalPos.x(), globalPos.y(),
&lx, &ly, &target) ) {
// somehow got to a different screen? ignore for now
return;
}
if ( target == qt_xrootwin() ) {
// Ok.
} else if ( target ) {
target = qt_x11_findClientWindow( target, qt_wm_state, TRUE );
if ( qt_xdnd_deco && !target || target == qt_xdnd_deco->winId() ) {
target = findRealWindow(globalPos,qt_xrootwin(),6);
}
}
if ( target == 0 )
target = qt_xrootwin();
QWidget * w = QWidget::find( (WId)target );
int emask = NoEventMask;
if ( w && w->isDesktop() && !w->acceptDrops() ) {
emask = EnterWindowMask;
w = 0;
}
if ( target != qt_xdnd_current_target ) {
if ( qt_xdnd_current_target )
qt_xdnd_send_leave();
Atom * type[3]={0,0,0};
const char* fmt;
int nfmt=0;
for (nfmt=0; nfmt<3 && (fmt=object->format(nfmt)); nfmt++)
type[nfmt] = qt_xdnd_str_to_atom( fmt );
XClientMessageEvent enter;
enter.type = ClientMessage;
enter.window = target;
enter.format = 32;
enter.message_type = qt_xdnd_enter;
enter.data.l[0] = object->source()->winId();
enter.data.l[1] = 1 << 24; // flags
enter.data.l[2] = type[0] ? *type[0] : 0; // ###
enter.data.l[3] = type[1] ? *type[1] : 0;
enter.data.l[4] = type[2] ? *type[2] : 0;
qt_xdnd_current_target = target;
// provisionally set the rectangle to 5x5 pixels...
qt_xdnd_source_sameanswer = QRect( globalPos.x() - 2,
globalPos.y() -2 , 5, 5 );
if ( w ) {
qt_handle_xdnd_enter( w, (const XEvent *)&enter );
} else {
XSendEvent( qt_xdisplay(), target, FALSE, emask,
(XEvent*)&enter );
}
}
XClientMessageEvent move;
move.type = ClientMessage;
move.window = target;
move.format = 32;
move.message_type = qt_xdnd_position;
move.window = target;
move.data.l[0] = object->source()->winId();
move.data.l[1] = 0; // flags
move.data.l[2] = (globalPos.x() << 16) + globalPos.y();
move.data.l[3] = qt_x_clipboardtime;
move.data.l[4] = qt_xdnd_action_copy;
if ( w )
qt_handle_xdnd_position( w, (const XEvent *)&move );
else
XSendEvent( qt_xdisplay(), target, FALSE, emask,
(XEvent*)&move );
}
void qt_handle_xdnd_position( QWidget *w, const XEvent * xe )
{
const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
QPoint p( (l[2] & 0xffff0000) >> 16, l[2] & 0x0000ffff );
QWidget * c = find_child( w, p );
if ( !c || !c->acceptDrops() && c->isDesktop() )
return;
if ( l[0] != qt_xdnd_dragsource_xid ) {
//debug( "xdnd drag position from unexpected source (%08lx not %08lx)",
// l[0], qt_xdnd_dragsource_xid );
return;
}
XClientMessageEvent response;
response.type = ClientMessage;
response.window = qt_xdnd_dragsource_xid;
response.format = 32;
response.message_type = qt_xdnd_status;
response.data.l[0] = w->winId();
response.data.l[1] = 0; // flags
response.data.l[2] = 0; // x, y
response.data.l[3] = 0; // w, h
response.data.l[4] = 0; // just null
QRect answerRect( c->mapToGlobal( p ), QSize( 1,1 ) );
QDragMoveEvent me( p );
if ( qt_xdnd_current_widget != c ) {
qt_xdnd_target_answerwas = FALSE;
if ( qt_xdnd_current_widget ) {
QDragLeaveEvent e;
QApplication::sendEvent( qt_xdnd_current_widget, &e );
}
if ( c->acceptDrops() ) {
QDragEnterEvent de( p );
QApplication::sendEvent( c, &de );
if ( de.isAccepted() )
me.accept( de.answerRect() );
else
me.ignore( de.answerRect() );
}
} else {
if ( qt_xdnd_target_answerwas )
me.accept();
}
if ( !c->acceptDrops() ) {
qt_xdnd_current_widget = 0;
answerRect = QRect( p, QSize( 1, 1 ) );
} else if ( l[4] != qt_xdnd_action_copy ) {
response.data.l[0] = 0;
answerRect = QRect( p, QSize( 1, 1 ) );
} else {
qt_xdnd_current_widget = c;
qt_xdnd_current_position = p;
qt_xdnd_target_current_time = l[3]; // will be 0 for xdnd1
QApplication::sendEvent( c, &me );
qt_xdnd_target_answerwas = me.isAccepted();
if ( me.isAccepted() )
response.data.l[1] = 1; // yess!!!!
else
response.data.l[0] = 0;
answerRect = me.answerRect().intersect( c->rect() );
}
answerRect = QRect( c->mapToGlobal( answerRect.topLeft() ),
answerRect.size() );
if ( answerRect.width() < 0 )
answerRect.setWidth( 0 );
if ( answerRect.height() < 0 )
answerRect.setHeight( 0 );
if ( answerRect.left() < 0 )
answerRect.setLeft( 0 );
if ( answerRect.right() > 4096 )
answerRect.setRight( 4096 );
if ( answerRect.top() < 0 )
answerRect.setTop( 0 );
if ( answerRect.bottom() > 4096 )
answerRect.setBottom( 4096 );
response.data.l[2] = (answerRect.x() << 16) + answerRect.y();
response.data.l[3] = (answerRect.width() << 16) + answerRect.height();
response.data.l[4] = qt_xdnd_action_copy;
QWidget * source = QWidget::find( qt_xdnd_dragsource_xid );
int emask = NoEventMask;
if ( source && source->isDesktop() && !source->acceptDrops() ) {
emask = EnterWindowMask;
source = 0;
}
if ( source )
qt_handle_xdnd_status( source, (const XEvent *)&response );
else
XSendEvent( qt_xdisplay(), qt_xdnd_dragsource_xid, FALSE,
emask, (XEvent*)&response );
}
void qt_handle_xdnd_position( QWidget *w, const XEvent * xe, bool passive )
{
const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
QPoint p( (l[2] & 0xffff0000) >> 16, l[2] & 0x0000ffff );
QWidget * c = find_child( w, p ); // changes p to to c-local coordinates
if (!passive && checkEmbedded(c, xe))
return;
if ( !c || !c->acceptDrops() && c->isDesktop() ) {
return;
}
if ( l[0] != qt_xdnd_dragsource_xid ) {
//qDebug( "xdnd drag position from unexpected source (%08lx not %08lx)",
// l[0], qt_xdnd_dragsource_xid );
return;
}
if (l[3] != 0) {
// timestamp from the source
qt_xdnd_target_current_time = qt_x_user_time = l[3];
}
XClientMessageEvent response;
response.type = ClientMessage;
response.window = qt_xdnd_dragsource_xid;
response.format = 32;
response.message_type = qt_xdnd_status;
response.data.l[0] = w->winId();
response.data.l[1] = 0; // flags
response.data.l[2] = 0; // x, y
response.data.l[3] = 0; // w, h
response.data.l[4] = 0; // action
if ( !passive ) { // otherwise just reject
while ( c && !c->acceptDrops() && !c->isTopLevel() ) {
p = c->mapToParent( p );
c = c->parentWidget();
}
QRect answerRect( c->mapToGlobal( p ), QSize( 1,1 ) );
QDragMoveEvent me( p );
QDropEvent::Action accepted_action = xdndaction_to_qtaction(l[4]);
me.setAction(accepted_action);
if ( c != qt_xdnd_current_widget ) {
qt_xdnd_target_answerwas = FALSE;
if ( qt_xdnd_current_widget ) {
QDragLeaveEvent e;
QApplication::sendEvent( qt_xdnd_current_widget, &e );
}
if ( c->acceptDrops() ) {
qt_xdnd_current_widget = c;
qt_xdnd_current_position = p;
QDragEnterEvent de( p );
de.setAction(accepted_action);
QApplication::sendEvent( c, &de );
if ( de.isAccepted() ) {
me.accept( de.answerRect() );
if ( !de.isActionAccepted() ) // only as a copy (move if we del)
accepted_action = QDropEvent::Copy;
else
me.acceptAction(TRUE);
} else {
me.ignore( de.answerRect() );
}
}
} else {
if ( qt_xdnd_target_answerwas ) {
me.accept();
me.acceptAction(global_requested_action == global_accepted_action);
}
}
if ( !c->acceptDrops() ) {
qt_xdnd_current_widget = 0;
answerRect = QRect( p, QSize( 1, 1 ) );
} else if ( xdndaction_to_qtaction(l[4]) < QDropEvent::Private ) {
qt_xdnd_current_widget = c;
qt_xdnd_current_position = p;
QApplication::sendEvent( c, &me );
qt_xdnd_target_answerwas = me.isAccepted();
if ( me.isAccepted() ) {
response.data.l[1] = 1; // yes
if ( !me.isActionAccepted() ) // only as a copy (move if we del)
accepted_action = QDropEvent::Copy;
} else {
response.data.l[0] = 0;
}
answerRect = me.answerRect().intersect( c->rect() );
} else {
response.data.l[0] = 0;
answerRect = QRect( p, QSize( 1, 1 ) );
}
answerRect = QRect( c->mapToGlobal( answerRect.topLeft() ),
answerRect.size() );
if ( answerRect.left() < 0 )
answerRect.setLeft( 0 );
if ( answerRect.right() > 4096 )
answerRect.setRight( 4096 );
if ( answerRect.top() < 0 )
answerRect.setTop( 0 );
if ( answerRect.bottom() > 4096 )
answerRect.setBottom( 4096 );
if ( answerRect.width() < 0 )
answerRect.setWidth( 0 );
if ( answerRect.height() < 0 )
answerRect.setHeight( 0 );
response.data.l[2] = (answerRect.x() << 16) + answerRect.y();
response.data.l[3] = (answerRect.width() << 16) + answerRect.height();
response.data.l[4] = qtaction_to_xdndaction(accepted_action);
global_accepted_action = accepted_action;
}
// reset
qt_xdnd_target_current_time = CurrentTime;
QWidget * source = QWidget::find( qt_xdnd_dragsource_xid );
if ( source && source->isDesktop() && !source->acceptDrops() )
source = 0;
if ( source )
qt_handle_xdnd_status( source, (const XEvent *)&response, passive );
else
XSendEvent( QPaintDevice::x11AppDisplay(), qt_xdnd_dragsource_xid, False,
NoEventMask, (XEvent*)&response );
}
