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;
}
}
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 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 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, 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 );
}