diff options
| author | Shawn Rutledge <shawn.rutledge@digia.com> | 2015-02-03 13:05:20 +0100 |
|---|---|---|
| committer | Daniel Molkentin <daniel@molkentin.de> | 2015-02-07 16:19:59 +0000 |
| commit | f4b8697c40bd476ef6bf83418e144adce7c7d4a3 (patch) | |
| tree | d5f7c03b627a459c5a6461ded2abc6d102c115ee /src/plugins/platforms/xcb/qxcbscreen.cpp | |
| parent | 45b60c01efc735ce9910d7724ee300855194ff33 (diff) | |
Handle gracefully the removal and re-attachment of all QScreens
Don't crash; restore windows when all screens are removed and re-added.
xcb: on configure notify, check for screen change: it may be that a
window belonging to a screen which was removed has now gotten mapped
to the new screen. On screen change, send a synthetic expose event,
because the real expose events already happened.
Task-number: QTBUG-38326
Task-number: QTBUG-32973
Task-number: QTBUG-42985
Change-Id: If334f55c248468ad3c95e7066bb14eca377d2050
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbscreen.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbscreen.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp index 0f25d10aac..b5eed4f4fe 100644 --- a/src/plugins/platforms/xcb/qxcbscreen.cpp +++ b/src/plugins/platforms/xcb/qxcbscreen.cpp @@ -417,6 +417,13 @@ void QXcbScreen::handleScreenChange(xcb_randr_screen_change_notify_event_t *chan QDpi ldpi = logicalDpi(); QWindowSystemInterface::handleScreenLogicalDotsPerInchChange(QPlatformScreen::screen(), ldpi.first, ldpi.second); + + // Windows which had null screens have already had expose events by now. + // They need to be told the screen is back, it's OK to render. + foreach (QWindow *window, QGuiApplication::topLevelWindows()) { + QXcbWindow *xcbWin = static_cast<QXcbWindow*>(window->handle()); + xcbWin->maybeSetScreen(this); + } } void QXcbScreen::updateGeometry(xcb_timestamp_t timestamp) |