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Fix deadlock when starting a drag

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Change-Id: Ie2fdc56bffb97ce04ffad11ea7a7686dc09a06cc
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
This commit is contained in:
Giulio Camuffo 2015-02-04 20:02:59 +02:00
parent d62f2bc4e7
commit ef259af2db
1 changed files with 8 additions and 1 deletions
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9
src/plugins/platforms/wayland/qwaylanddnd.cpp
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@ -71,13 +71,20 @@ QMimeData * QWaylandDrag::platformDropData()
void QWaylandDrag::startDrag()
{
bool cancel = false;
if (!shapedPixmapWindow()) {
QBasicDrag::startDrag();
QBasicDrag::cancel();
// Don't call cancel() here, since that will hide 'shapedPixmapWindow()', and
// QWaylandWindow::setVisible(false) will flush the window system queue,
// ending up trying to render the window, which doesn't have a role yet,
// and so blocking waiting for a frame callback.
cancel = true;
}
QWaylandWindow *icon = static_cast<QWaylandWindow *>(shapedPixmapWindow()->handle());
m_display->currentInputDevice()->dataDevice()->startDrag(drag()->mimeData(), icon);
if (cancel)
QBasicDrag::cancel();
QBasicDrag::startDrag();
}