static bool checkEmbedded(QWidget* w, const XEvent* xe)
{
if (!w)
return false;
if (current_embedding_widget != 0 && current_embedding_widget != w) {
current_target = ((QExtraWidget*)current_embedding_widget)->extraData()->xDndProxy;
current_proxy_target = current_target;
qt_xdnd_send_leave();
current_target = 0;
current_proxy_target = 0;
current_embedding_widget = 0;
}
QWExtra* extra = ((QExtraWidget*)w)->extraData();
if (extra && extra->xDndProxy != 0) {
if (current_embedding_widget != w) {
last_enter_event.xany.window = extra->xDndProxy;
XSendEvent(X11->display, extra->xDndProxy, False, NoEventMask, &last_enter_event);
current_embedding_widget = w;
}
((XEvent*)xe)->xany.window = extra->xDndProxy;
XSendEvent(X11->display, extra->xDndProxy, False, NoEventMask, (XEvent*)xe);
if (currentWindow != w) {
currentWindow = w;
}
return true;
}
current_embedding_widget = 0;
return false;
}
static bool checkEmbedded(QWidget* w, const XEvent* xe)
{
if (!w)
return FALSE;
if (current_embedding_widget != 0 && current_embedding_widget != w) {
qt_xdnd_current_target = ((QExtraWidget*)current_embedding_widget)->extraData()->xDndProxy;
qt_xdnd_current_proxy_target = qt_xdnd_current_target;
qt_xdnd_send_leave();
qt_xdnd_current_target = 0;
qt_xdnd_current_proxy_target = 0;
current_embedding_widget = 0;
}
QWExtra* extra = ((QExtraWidget*)w)->extraData();
if ( extra && extra->xDndProxy != 0 ) {
if (current_embedding_widget != w) {
last_enter_event.xany.window = extra->xDndProxy;
XSendEvent( QPaintDevice::x11AppDisplay(), extra->xDndProxy, False, NoEventMask,
&last_enter_event );
current_embedding_widget = w;
}
((XEvent*)xe)->xany.window = extra->xDndProxy;
XSendEvent( QPaintDevice::x11AppDisplay(), extra->xDndProxy, False, NoEventMask,
(XEvent*)xe );
qt_xdnd_current_widget = w;
return TRUE;
}
current_embedding_widget = 0;
return FALSE;
}
void QDragManager::cancel()
{
if ( object ) {
beingCancelled = TRUE;
object = 0;
}
if ( qt_xdnd_current_target ) {
qt_xdnd_send_leave();
}
if ( restoreCursor ) {
QApplication::restoreOverrideCursor();
restoreCursor = FALSE;
}
qt_xdnd_source_object = 0;
delete qt_xdnd_deco;
qt_xdnd_deco = 0;
}
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 );
}