Since change 2e4d8f67a8 the need for Map and Unmap events has
gone away, as now the Expose event is used to notify the application
about when it can start rendering.
The Map and Unmap events weren't really used except by QWidget to set
the WA_Mapped flag, which we now set based on the expose / unexpose.
Also guarantee that a Resize event is always sent before the first
Expose, by re-introducing an asynchronous expose event handler. Since
an expose is required before rendering to a QWindow, show a warning if
QOpenGLContext::swapBuffers() or QBackingStore::flush() if called on a
window that has not received its first expose.
Change-Id: Ia6b609aa275d5b463b5011a96f2fd9bbe52e9bc4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
QFont::defaultFamily() should not use any hardcoded font names like
"Helvetica" or "Times" as they might not be present in certain systems,
it should rather use abstract names like "sans-serif", "serif" and
"monospace" then let the platform plugin to decide which font map to
them.
Change-Id: I5aafb103a5238c17b10773711ad504806c6fc3ce
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
Cached font was used regardless of the format, resulting in incorrect
advance in some cases when default format differed from the cached
format.
Task-number: QTBUG-24188
Change-Id: I39e4156bd9ba743afa7e106e934c90227fbf2b8b
Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>
Change-Id: Id565fa1eb8fe13c62a93a5afa39a5701ce7b20ea
QPixmap::grabWidget is deprecated, which calls QWidget::grab() at present.
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
These unit tests do not depent on QtWidget.
Change-Id: I95526125c563885c0531da7ebfee06bca9a87b1c
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Both tst_qimagereader.cpp and tst_qimagewriter.cpp do not depend on
QtWidgets.
Change-Id: I7e8b31c23db203c44ccb4cd4e8e747d18c5d7ed7
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
QPointF is in the category of types for which QList
is needlessly inefficient (elements are copy-constructed
onto the heap and held through pointers). Use a vector
instead. This is consistent with the QPainter API.
Change-Id: Ie3d6647e05b40a33a7bb0598cbbcde4676e00836
Reviewed-by: Laszlo Agocs <laszlo.p.agocs@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Q_DECLARE_METATYPE macro is much better for a custom type registration
then a handwritten template specialization.
Change-Id: Ia15688d89f708fbff0c1da93e08052d31f3b3fc0
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
show() on a window is asynchronous. Wait for it to complete before
continuing with the test.
Note the test already contained code for this, but it was inside of
a Q_WS_X11 block, making it dead code in Qt 5.
Change-Id: I06f892eea86278c56b1773a7e968bbe065f86260
Reviewed-by: Kalle Lehtonen <kalle.ju.lehtonen@nokia.com>
Do not draw on the backingstore DC when drawing
to a pixmap. Access the paintdevice for checking via
the QPaintEngine since QPainter returns the clipdevice,
which is a widget.
Fix warning about accessing handle of 0-window in the
test.
Task-number: QTBUG-24183
Change-Id: Ie91ea6ab9d09528c7ec1d35633f9a0ee667719b1
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Otherwise metacity was crashing when a QWindow was destroyed immediately
after being activated, because metacity was trying to select events
(XSelectInput) for the already destroyed m_netWmUserTimeWindow.
Task-number: QTBUG-24492
Change-Id: Iedbe7bdd6b26110ca8bec6f33525209ae551ffd5
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
This made sense only for Symbian where there was a special
CFbsBitmap-based backend present and it was used from the
Symbian-specific VG and GL pixmap implementations.
The generic version is merely a useless wrapper over QImage and is not
in use anywhere in the codebase.
Change-Id: I1dabe22dfb8cbbc35dce8e22703a3aff810fb5f9
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
tst_qclipboard.cpp still has Q_WS_WIN which must be clear away. After
clean up, auto test will fail under windows: When setMimeData() is
called, dataChanged() signal will be emited twice.
The solution for QTBUG-24184 has partially solved the problem, but it
still there. Make sure emitChanged() only called by QPlatformClipboard
will give our more control for this.
Task-number: QTBUG-24484
Change-Id: I23566c6d3b32828b6865234c311af3635fe9e299
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
These function are marked as obsolete since Qt 4.3
The motivation here was too fix QPixmap::serialNumber which is marked as
QT_DEPRECATED_SINCE but was not inlined.
But then I took the oportunity to do the same with all the other
functions.
Change-Id: Ic50a7857461fc402b2f2b4528c83e53e8e28ea30
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
remove "header" and assignmets which are defaults or bogus,
reorder some assignments.
Change-Id: I67403872168c890ca3b696753ceb01c605d19be7
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
This commit reverts partly 7401832a7d
There is something wrong with DummyWindow/XCB/Metacity, Metacity
crashes quite often when QWindow is activated.
Change-Id: I611af2678814f41c941cb697054135f561a77878
Reviewed-by: Joona Petrell <joona.t.petrell@nokia.com>
Many languages use a fullstop to indicate an abbreviation, making the
fullstop part of the word. For languages like thai, it is required to
pass the fullstop along for correct word breaking.
Change-Id: I5ad0ddbc66ea96e08913446dad8fd3c5d5dd0905
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
Thai is not supposed to have ZWJ and ZWNJ characters or any other of the
Inherited Unicode Scripts
(http://www.verisigninc.com/assets/idn-inherited-unicode-script.pdf)
- they don't have a mapping to the thai encoding tis620 which libthai
requires. However it is an unfortunate fact that there are many websites
etc that liberally place these ZWJ and ZWNJ characters throughout thai text
to force word boundaries, so we must also deal with them.
We deal with all Inherited characters by mapping them to the invalid code ~0
in tis620 encoding, following what libthai does internally in its own tis620
encoding functions, and then replacing this character with the original
unicode and setting dontPrint to true to hide the ZWJ and ZWNJ
characters.
Includes a unit test to check the behaviour.
Change-Id: I1ee8388b650cb5fc61bcb265efb9843c73f327ac
Reviewed-by: Adrian Yanes <ext-adrian.yanes@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
Use QRectF consistently to avoid the rounding done in the conversion
to QRect.
Task-number: QTBUG-24463
Change-Id: If9ea858ebabf8c449ea058b9d379d4a57cb6c82d
Reviewed-by: Joona Petrell <joona.t.petrell@nokia.com>
Be explicit about skipping the test when no default printer is present.
Change-Id: If69b275eb0f490411471ec42798d8aefcc57fd83
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Remove previously defined insignificant test flag as the number of
tests failing has been reduced.
Task-number: QTBUG-24406
Task-number: QTBUG-23058
Change-Id: I01b41f30469cf7a440e21195e105cb30a8db76e2
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Emit changed signal only if the clipboard is not owned,
in which case QClipboard does it.
Task-number: QTBUG-24184
Change-Id: I27420583a718a5f8cd93b9d361b1e422a75df300
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
- Save & Restore style and geometry when switching to
full screen and back since it is not a real state on
Windows.
- Obey the positioning policy in setGeometry.
Task-number: QTBUG-24185
Change-Id: I18dea4fd372e0b2e46273a7a27e0c6f4f4bde771
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
This test fails intermittently, and at random locations.
Task-number: QTBUG-24322
Change-Id: Ied6dd4d1593066debc0fb48c6ca2a17a1f4d51b7
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Historically, we've calculated font height as ascent+descent+1.
In Qt 4, a patch was added to work around this by subtracting
1 from the descent of the font engines. We now remove the +1 and
the work arounds.
Change-Id: I7e25d49b97ac892015d3328f32d70eb9a7c2d88f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Marked the following tests insignificant due to failures, these need
to be fixed later and then re-enabled:
tst_QPixmap
tst_QClipboard
tst_QWindow
tst_QGuiApplication
tst_QPainter
tst_QPrinterInfo
tst_QPrinter
tst_QOpenGL
tst_QFontDatabse
tst_QFontMetrics
tst_QGlyphRun
tst_QRawFont
Task-number: QTBUG-24128
Change-Id: I39ade8a693c4580b5cd618624e892cdcac21d78c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>
Since some GUI event dispatchers are complete reimplementations and do
not build on the corelib ones, we want to run the same tests with the
other dispatcher.
Since this is a GUI test now, we need to make sure to drain system
events queued during application startup to make sure we can reliably
run the test functions.
Change-Id: I4905db70bc8f8584c4ef1f4d767824040281452c
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
SVG support is now handled in QtSvg. Previously this test code would
normally be skipped when testing qtbase. This code is only executed
when testing qt5 with QtSvg enabled. This code will be moved to QtSvg.
Task-number: QTBUG-22360
Change-Id: I7372012469f9c0f9b7d3851a0ae696f8f935ba10
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Simplified the raster engine by treating image formats in a more
generic way and removed some unused code.
Change-Id: Ib3979a1a6e3e6f17c5002248545779ec36fff7c9
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
QTest::ignoreMessage() cannot be called when creating test data rows,
but rather must be called when executing a row.
Change-Id: Ifceaff4c5a7f1b6408ec57196298e3f3038910c9
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
QInputMethod better describes what the class is about, input methods
in general, be they panels or just composing input from key events.
Compatability headers added for old name. Not bulletproof but should be
enough to get transition done.
Change-Id: Iefde6e7ccb1ec4a3b226cef3469089e751c60fc1
Reviewed-by: Joona Petrell <joona.t.petrell@nokia.com>
A QImage can be constructed with a provided buffer, that has to be
kept alive for the live-time of the QImage and all its copies.
Frameworks like CoreGraphics or Cairo offer a similar method of
creating image objects and also offer the ability to provide a callback
function that is called when the image is destroyed.
This patch adds this functionality to QImage by extending the
QImage constructors that take a raw image buffer pointer.
Change-Id: Ia6342408c560ef49b498c9e4664b4602febb0fcd
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Michalina Ziemba <michalina.ziemba@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
The tiff plugin and bundled libtiff is moving to the qtimageformats
project on Gerrit.
Task-number: QTBUG-23887
Change-Id: I4c848232fdccddd7e7f54215f9eaa78dc4c3a53d
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
As discussed on the development mailing list, the window list returned
by QGuiApplication::topLevellWindows() included all QWindows, even the
non top-level ones.
This commit introduces the new method allWindows(), which returns the list
of all QWindows, fixes the list returned by topLevelWindows() and also
introduces tests for both methods.
Change-Id: I761f0fcdec79f83949012c628655ed12cd18572c
Reviewed-by: Jonas Gastal <jgastal@profusion.mobi>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Change-Id: Ife590b7639f4aadcfbd4d77ca170285b623c14ae
Reviewed-by: Jonas Gastal <jgastal@profusion.mobi>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
- Two cases of image.png not being found when run from install directory
Change-Id: I5f20b7a0ea0b120ce06c556b83bc20dd658a4f83
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
- jumpToFrame() updated to use QFINDTESTDATA
Change-Id: I1b5ff92722e389e714eb58b37996f3e933e95489
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
* Deprecated QInputPanel::inputWindow() which is already
just returning QGuiApplication::activeWindow()
* Deprecated QInputPanel::inputItem() and introduced
QGuiApplication::focusObject(). Input methods can check
input method support by Qt::ImEnabled query.
Change-Id: I70a9c1c3f79aadb75c839d0489a9428f7a221df5
Reviewed-by: Joona Petrell <joona.t.petrell@nokia.com>
Implement the public slot QWindow::close() and add the correspondent test.
Change-Id: If3f07cce3b26640f06fc52d0e4dca875d9894b3d
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
To match the previous QWindow::orientation() property which can be
useful to access from QML. Also, removed the automatic translation of
Qt::PrimaryOrientation to QScreen::primaryOrientation() on the QWindow
level, as it leads to a lot of complexity regarding the
QWindow::contentOrientationChanged() signal, and makes it hard to
distinguish between the case where the window's orientation follows
that of the screen, and the case where the orientation just happens to
be set to that of the screen.
Change-Id: I6950d1337b7f929815eff1328181855090d8066b
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
The MNG file format is generally abandoned, and libmng has been
unmaintained for several years.
The MNG plugin and bundled libmng has been moved to the
qtimageformats project on Gerrit.
Task-number: QTBUG-21869
Change-Id: I946432347014ffde2b72307a5f8b166ca5553602
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Previously we only had QWindow::setOrientation() which was a hint about
the orientation the window's contents were rendered in.
However, it's necessary to separate between the orientation
corresponding to the window buffer layout and orientation of the
contents. A game for example might typically want to use a landscape
buffer even on a portrait device. Thus, we replace
QWindow::orientation() with QWindow::reportContentOrientationChange() and
QWindow::requestWindowOrientation().
Change-Id: I1f07362192daf36c45519cb05b43ac352f1945b5
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
- qtextdocument unittest to remove foo.png after test.
- qtextdocumentlayout unittest to remove expected.png and img.png after test.
Change-Id: I42971e9128d399cadc87b9fd345c868065f180a9
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- Removes temp_image.png after test run.
Change-Id: I0b233609c2bbf57151cf173181a40738d934f0ec
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
There is no guarantee the touches will be listed in the same order in
an update: the platform/generic plug-in, the drivers, etc. are all
free to shuffle the list of touch points in each report (even though
the order is fairly stable with most systems).
Therefore, to be safe, move and release events should be generated not
from the first point in the list but from the one with the matching
id.
Change-Id: I6615224cbf2cfdc440143eb3191482a23d85c6a4
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Change-Id: I6d69ac96597f27575dd40e4c80c982f06fa88f51
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Since 5e07a3ac58f93bd5e09715d43b58c20950c2befa Thai text layout is
handled by libthai to special case of the SARA AM. It didn't handle
isolated SARA AM. This patch fixed it and added detailed explaination
on the special case.
The dotted circle should be shown rather than hidden.
Add an test case to verify that with Waree.
Change-Id: I4967715627cbe15f5a3e9ab3e3844420ab541aed
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
Change-Id: Ic9fedac82d32f8484a9d915d9d91fdaabedc85e2
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
Change-Id: I962fb8093db5bd83208ebd59ec0cf82005add590
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
Change-Id: If75ae2b8e39f6388f4e84ed4aa2681b5a5917e81
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
Change-Id: Icbc823d87cdf6fd36a8ef10ade8e4bca7d9b1c3b
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
- made test depend on copier and paster to make sure they are built first.
- Changed to use installTestHelperApp() to deploy helper apps.
Change-Id: I39e4f2ddcc3c735e17256db5638bf8a3495362f6
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
Change-Id: I7aaf4d16b03373be0fef39fe05c0df0d947dc7e3
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- Changed to use QFINDTESTDATA and TESTDATA
- skip testing permissions if test run as root user
Change-Id: I5b308789202b01bdd0d630af65775ae23bf0cc4c
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
- uses QFINDTESTDATA instead of SRCDIR
- Added check to test if fonts are present and generate one skip instead
of 1200+ on platforms were no fonts are available for testing.
- fail if unittest fonts not found.
Change-Id: I9c051cf8cef6cd355f16647c614c86771dcf6150
Reviewed-by: Kurt Korbatits <kurt.korbatits@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
The current way we do it of having the platform or touch plugin send
both mouse and touch events is not ideal. There's no good way to write
an application that works sanely both on a touch-only device and on a
desktop except by restricting yourself to only handling mouse events. If
you try to handle touch events you don't get any events at all on
desktop, and if you try to handle both, you end up getting duplicate
events on touch devices.
Instead, we should get rid of the code in the plugins that automatically
sends mouse events translated from touch events. This change enables
that by making the behaviour fully configurable in QtGui.
Two new application attributes are added to explicitly say whether
unhandled touch events should be sent as synthesized mouse events and
vice versa, and no duplicates are automatically sent as the current
situation. Synthesized mouse events are enabled by default.
We also get rid of the QTouchEvent::TouchPoint::Primary flag, which
was only used to signal that the windowing system automatically
generated mouse events for that touch point. Now we only generate mouse
events from the first touch point in the list.
Change-Id: I8e20f3480407ca8c31b42de0a4d2b319e1346b65
Reviewed-by: Laszlo Agocs <laszlo.p.agocs@nokia.com>
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@nokia.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Denis Dzyubenko <denis.dzyubenko@nokia.com>
This makes it possible for platform plugin independent code (such as
generic plugins) to report changes to screen properties. An example
would be an accelerometer plugin that reports orientation changes
without knowing anything about the windowing system.
Change-Id: I984984b6d064327772c264bc942269422451da37
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>
The previous change missed some headers from years prior to 2011, and a
few new files were merged after the previous change.
Change-Id: Ib7d1a2b7062228c2a5373da64242b2ee1f0981e1
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Before the selection of cells NW of anchor showed some defects where
cells would not be selected as the user expects
Change-Id: Ia2b63f11b8d534e918ffb97b76339d60f1ca0389
Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>
This signal can be used to clean up OpenGL resources in a safe way
before the context is destroyed.
Task-number: QTBUG-20083
Change-Id: I45a4be01b06af4ee7196fa502116f099d50afeab
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
