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xdg-shell v5,v6 shell integrations: Fix crash when showing popups

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If a popup was shown without any input events happening first, it would cause
nullptr dereferences in both xdg-shell v5 and v6.

Fixes crashes in:

- tst_QAccessibility::comboBoxTest
- tst_QAccessibility::menuTest
- tst_QWindow::touchInterruptedByPopup
- tst_QFocusEvent::checkReason_Popup

Task-number: QTBUG-67150
Change-Id: Ib3e06326f71e4ab5f74727cb4f79626a21c34d55
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
This commit is contained in:
Johan Klokkhammer Helsing 2018-03-19 10:21:47 +01:00 committed by Johan Helsing
parent bfb8f07065
commit 2804d35cb4
4 changed files with 8 additions and 7 deletions
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3
src/plugins/platforms/wayland/qwaylandxdgshell.cpp
View File

@ -73,12 +73,11 @@ QWaylandXdgSurface *QWaylandXdgShell::createXdgSurface(QWaylandWindow *window)
return new QWaylandXdgSurface(this, window);
}
QWaylandXdgPopup *QWaylandXdgShell::createXdgPopup(QWaylandWindow *window)
QWaylandXdgPopup *QWaylandXdgShell::createXdgPopup(QWaylandWindow *window, QWaylandInputDevice *inputDevice)
{
QWaylandWindow *parentWindow = m_popups.empty() ? window->transientParent() : m_popups.last();
::wl_surface *parentSurface = parentWindow->object();
QWaylandInputDevice *inputDevice = window->display()->lastInputDevice();
if (m_popupSerial == 0)
m_popupSerial = inputDevice->serial();
::wl_seat *seat = inputDevice->wl_seat();

2
src/plugins/platforms/wayland/qwaylandxdgshell_p.h
View File

@ -79,7 +79,7 @@ public:
~QWaylandXdgShell() override;
QWaylandXdgSurface *createXdgSurface(QWaylandWindow *window);
QWaylandXdgPopup *createXdgPopup(QWaylandWindow *window);
QWaylandXdgPopup *createXdgPopup(QWaylandWindow *window, QWaylandInputDevice *inputDevice);
private:
void xdg_shell_ping(uint32_t serial) override;

5
src/plugins/platforms/wayland/qwaylandxdgshellintegration.cpp
View File

@ -74,8 +74,9 @@ bool QWaylandXdgShellIntegration::initialize(QWaylandDisplay *display)
QWaylandShellSurface *QWaylandXdgShellIntegration::createShellSurface(QWaylandWindow *window)
{
if (window->window()->type() == Qt::WindowType::Popup)
return m_xdgShell->createXdgPopup(window);
QWaylandInputDevice *inputDevice = window->display()->lastInputDevice();
if (window->window()->type() == Qt::WindowType::Popup && inputDevice)
return m_xdgShell->createXdgPopup(window, inputDevice);
else
return m_xdgShell->createXdgSurface(window);
}

5
src/plugins/platforms/wayland/qwaylandxdgshellv6.cpp
View File

@ -165,8 +165,9 @@ void QWaylandXdgSurfaceV6::setAppId(const QString &appId)
void QWaylandXdgSurfaceV6::setType(Qt::WindowType type, QWaylandWindow *transientParent)
{
if ((type == Qt::Popup || type == Qt::ToolTip) && transientParent) {
setPopup(transientParent, m_window->display()->lastInputDevice(), m_window->display()->lastInputSerial(), type == Qt::Popup);
QWaylandDisplay *display = m_window->display();
if ((type == Qt::Popup || type == Qt::ToolTip) && transientParent && display->lastInputDevice()) {
setPopup(transientParent, display->lastInputDevice(), display->lastInputSerial(), type == Qt::Popup);
} else {
setToplevel();
if (transientParent) {