Empty clipRect means "clip away completely", not "no clipping".
Task-number: QTBUG-50719
Change-Id: I6a9dd66130716a921fe9fc245582274e3c9718fe
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
- Make it possible to pass an optional root widget to dumpAllWidgets().
- Add option to output size constraints of widgets/windows.
- Output normal geometry of top levels.
Change-Id: Ib48809d070c5721fe4688a2ad39cb99f286618de
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Not that we require it, but since The Qt Company did it for all files
they have copyright, even if they haven't touched the file in years
(especially not in 2016), I'm doing the same.
Change-Id: I7a9e11d7b64a4cc78e24ffff142b4c9d53039846
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
From Qt 5.7 -> tools & applications are lisenced under GPL v3 with some
exceptions, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new GPL-EXCEPT header instead of LGPL21 one
(in those files which will be under GPL 3 with exceptions)
Change-Id: I42a473ddc97101492a60b9287d90979d9eb35ae1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
In German layout, "Ctrl+/" is "Ctrl+Shift+7".
Change-Id: I50f3d77c4c76e7eb7cffe31283a3b73074324fea
Task-number: QTBUG-47122
Task-number: QTBUG-50360
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
When recursing over the windows, the code did not take into account
that EnumChildWindow enumerates grand children as well. Exclude
those by checking for the direct parent in the recursion so that
the hierarchy is printed correctly. Add more information about
class and module and rearrange the output a bit so that the window
title is more prominent.
Task-number: QTBUG-50206
Change-Id: Iffb12c44eda9d09da5eb14a8405aee52ed3aa849
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
The qt_poll function calls recv to query whether fds marked by select
as readable should be marked POLLIN or POLLHUP in the pollfd structure.
On many platforms such as QNX this requires extra link-time libraries
which were not previously required by QtCore.
While the qt_poll function is intended as a fallback mechanism only for
those platforms which do not implement poll natively, the function was
compiled unconditionally whenever QT_BUILD_INTERNAL was defined, e.g.
in developer builds.
Additionally the function was included on those systems that define poll
in system headers so that configure determines build-time availability,
but do not define _POSIX_POLL > 0 or indicate POSIX:2008 compliance via
either the _POSIX_VERSION or _XOPEN_VERSION macros. On those systems a
sysconf query for _SC_POLL was performed to determine at runtime whether
to call the system poll or qt_poll.
Both of these cases are in fact counterproductive. In the first case the
sole consumer of the function is a single manual unit test. In the
second, to my knowledge no platform requires the runtime fallback.
Despite that, we were forcing an extra dylib in both cases.
Both cases are fixed by 1) moving the implementation into its own file
for the unit test to include and 2) dropping the dynamic fallback if
configure determines availability of poll at compile-time.
This also reverts commit 1377709711, which
added -lsocket for QtCore on QNX.
Change-Id: I2dd10695c5d4cac81b68d2c2558797f3cdabc153
Reviewed-by: James McDonnell <jmcdonnell@qnx.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This function is introduced to safely provide poll(2)-like semantics for
socket multiplexing on Unix-like platforms. For platforms where no poll
system call is available, an implementation based on select(2) is provided.
Change-Id: I320e97dae5924316675a74d1897c48cae292ac6d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The platform is no longer supported or actively maintained, and is
in the way for improvements to the Unix event dispatcher and QProcess
implementations.
Change-Id: I3935488ca12e2139ea5f46068d7665a453e20526
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Currently QOpenGLWidget and QQuickWidget do not support having native
child widgets inside the same top-level window. In some cases this is
inevitable, f.ex. multimedia may require native windows when used from
widget apps. winId() calls made for various (valid or invalid) reasons
are also problematic.
There are no blockers for supporting this setup, however. By storing
multiple texture lists (one for each subtree where the root is a
native widget), adding the missing markDirtyOnScreen calls, letting
each native widget access the correct texture list (i.e. the one
corresponding to its children) when they are (separately) flushed, and
fixing composeAndFlush() to take the update region and the (native
child) offset into account, it can all be made functional.
The change also fixes the issue of keeping GL-based compositing
enabled even after all render-to-texture widgets in the window become
hidden. Due to the changes of how such widgets are gathered,
composeAndFlush() is not invoked anymore when no such widgets are
discovered for a given native parent. This is great since having
compositing enabled infinitely is an issue for applications like Qt
Creator that implement certain views with QQuickWidgets but cannot
afford the cost of texture uploads in other places (e.g. for the text
editor) on slower machines.
The openglwidget manual test is greatly enhanced to test various
situations (MDI, scroll areas, tab widgets, QOpenGLWidget as native
child, QOpenGLWidget with non-tlw native parent, etc.)
Task-number: QTBUG-48130
Task-number: QTBUG-49172
Change-Id: Iad098359c8bcf749f01c050da0853415e1550eda
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
* Georgian lari currency symbol
* A large collection of CJK unified ideographs
* Emoji symbols and symbol modifiers
* Letters to support the Ik language in Uganda, Kulango in
the Côte d’Ivoire, and other languages of Africa
* A set of lowercase Cherokee syllables, forming case pairs
with the existing Cherokee characters
* The Ahom script for support of the Tai Ahom language in India
* Arabic letters to support Arwi—the Tamil language written in the Arabic script
For more details, see http://www.unicode.org/versions/Unicode8.0.0/
[ChangeLog][QtCore] Unicode data updated to v.8.0
Change-Id: If255f95c9c45655b721369a116299da3cabbba0a
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Add a debug proxy style that wraps around an existing style and outputs
the parameters and return values of its function calls, for debugging
QStyle.
Task-number: QTBUG-47084
Task-number: QTBUG-45055
Change-Id: I638618e83bbac8ca4fdce31441bf4c913e911154
Reviewed-by: Andy Shaw <andy.shaw@theqtcompany.com>
Assuming that the target is always GL_TEXTURE_2D is not going to be sufficient
when working with EGLStreams for example where GL_TEXTURE_EXTERNAL_OES is a
must. The blitter is now changed to support multiple programs so other targets
can easily be added as well in the future, if necessary.
Change-Id: I247d30600222fb5af6305ed5d9740baa5e43e83e
Reviewed-by: Louai Al-Khanji <louai.al-khanji@theqtcompany.com>
Implement as generic "@Nx" support in an exported
qt_findAtNxFile function.
3x devices now get one extra file existence test
in cases where @3x versions are not present. 1x
devices are still on the fast path where there are
no extra file system accesses.
Add an @3x image to the highdpi manual test.
Change-Id: I4ce3fc245ada01ea410abe1443ceb1e3abf7c17f
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
Use character literals where applicable.
Change-Id: I1a026c320079ee5ca6f70be835d5a541deee2dd1
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Need to survive having screens detached/reattached on X11.
Task-number: QTBUG-42985
Change-Id: I81cf9721f0cb61a29180c60d44d588063266e651
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Cocoa is basically just AppKit + CoreData. Since we do not use CoreData
in Qt, there is no reason to link to it or (transitively) import its
headers.
This is just a mechanical replacement of -framework Cocoa with
-framework AppKit and <Cocoa/Cocoa.h> with <AppKit/AppKit.h>
Change-Id: Ibcfc8a03c0ddff27a67fbc87dd7bd58a4b648956
Reviewed-by: Mika Lindqvist <postmaster@raasu.org>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
Fix usage of API that is marked deprecated.
Change-Id: Ib9a45e93084fb5b0d0d3aefd64b755dff7c696d6
Reviewed-by: Andreas Aardal Hanssen <andreas@hanssen.name>
This commit moves the functionality from QtNetwork's QHostInfo to
QtCore. Note that due to Windows ws2_32.dll's quirky behavior of
requiring WSAStartup before calling gethostname, this change required
moving the initialization to QtCore too.
On Linux systems, gethostname() gets the name from uname(), so we bypass
the middle man and save one memcpy.
Change-Id: I27eaacb532114dd188c4ffff13d32655a6301346
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Add several new tests to verify that Qt behaves properly when
high-DPI scaling is enabled. Add a generic framework for
manual tests for good measure. This could be refactored and
used for other manual tests later.
Includes tests written by Morten and Friedemann.
Task-number: QTBUG-46615
Change-Id: Ib6762ec1454711e71f0c094b19015932b99e8d6d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
f9408317e7 was unfortunately
approved though it had an annoying bug. The patch had
an assign of a visual index into a logical index.
This patch fixes that issue.
Change-Id: I9cc75e4e9701858c92e2c3e5817415041b42f8e8
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>
Add command line options for
- Grabbing gestures
- Suppressing mouse and touch events
Add gesture events to the log.
Add a hierarchy of gesture classes storing the parameters
of finished gestures with drawing functionality and
implement for pan and swipe.
Task-number: QTBUG-46195
Change-Id: I019fe5b60116316a54e11b2c30e1d34f5e72bcf0
Reviewed-by: Shawn Rutledge <shawn.rutledge@theqtcompany.com>
For example the Galaxy Note series of devices. This makes possible
drawing applications which handle stylus events differently from touch
or mouse. As on any other platform, if the application does not accept
the QTabletEvent, a QMouseEvent will be synthesized.
Also fix the tablet manual test to show larger circles on hidpi devices.
[ChangeLog][Android] stylus devices such as the S Pen generate
QTabletEvents
Task-number: QTBUG-38379
Change-Id: Ib594f453b8403cc06aa4e440a76f07afa3bac38c
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
Draw touch points as dots and mouse points as circles
to be able to verify High DPI scaling.
Change-Id: I2293adbcc726391f0d9e156935d609b957432029
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
It is fully possible to show a window on all the connected screens
even when the screens are not virtual siblings, i.e. they do not
form one big desktop. When X is configured to use a separate screen
for each physical screen, it becomes essential to do setScreen()
either directly or via QDesktopWidget in case of widgets. The original
code attempting to call QWindow::setScreen() cannot succeed since there
is no QWindow available before the widget is shown. This is easy to
work around.
The app now works identically in all cases.
Change-Id: I519ca0c0109c68aac2f2d4e6972d14b55767b403
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
- Make the subject of the Property watcher settable.
- Embed it into a QMainWindow with menu and
listen to the screen changed event, setting
the new screen with a message about the position.
- Remove hash, close obsolete windows by iterating
over the top levels looking for the screen.
Change-Id: I4ed1122bab7c0cd9676d63995ce85a44719f4ba6
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
These values were added as part of upgrading to Unicode 7.0
Change-Id: Ib208828a7685ba4f89f0e2f06033f74c8ff13532
Reviewed-by: Andy Shaw <andy.shaw@theqtcompany.com>
Focus the test on embedding QWindow: Remove the
NSToolBar code. Use standard NSApplication startup
code. Use winId() to access the NSView instead of
QPlatformNativeInterface (which is gui-private).
Rename Window -> RasterWindow.
Change-Id: Ie98cb73020d2721743bb665b89b17f07f2bf984b
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>
On OS X the application icon can be changed at runtime, so this adds a way
to set this via the QPlatformIntegration.
[ChangeLog][OS X] QApplication::setWindowIcon now changes the icon for the
application in the dock.
Task-number: QTBUG-43999
Change-Id: Ice298c0bd52f10f4866f37c6d3f20cf5419b7a1b
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
We need to track the active popup globally, having
parent windows track child popups is not sufficient
since there may be one or more intermediate windows
in between the event receiving window and popup window.
Add API to QOCocoaIntegration for tracking the global
popup window and use it instead of the per-window
tracking. Make sure to only close popups on clicks
outside the popup only. Add code to QNSView::handleMouseEvent
that redirects mouse events to the active popup.
Add manual test.
Change-Id: Ia3e3fd42d8fddf5c69f0c6879b333ca544521f61
Task-number: QTBUG-43464
Task-number: QTBUG-31937
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
This is a little-used feature which only affects how minimized icons
are displayed on certain older window managers, and is not necessary
even then. It has not been implemented in Qt 5 until now.
Task-number: QTBUG-44659
Change-Id: Ie6ead7a6f922878b349a096d905bf7f675dc2f31
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
There's no need to decode the event details here anymore, and anyway
this had a bug: it always said the device is unknown.
Change-Id: If99dddbe2136d95e818f4fe526f62650cbd7c1ca
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Some older (or weird) Linux distributions don't have /etc/os-release, so
let's try to read /etc/lsb-release instead. If we find a file called
/etc/<distronamelowercase>-release and it's bigger than the pretty name
we read from /etc/lsb-release, use that.
Because the order of the keys changes between the two *-release files,
we can't do a sorted search anymore.
Change-Id: I1a800c709d3543699131ffff13c48532d5074f3c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Dirk Hohndel <dirk@hohndel.org>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Add command line test application that can print
the mime type of a file or dump all mime types.
Task-number: QTCREATORBUG-13996
Task-number: QTCREATORBUG-14005
Change-Id: I5ef2fa4b9fbab986b1db4fc0bd8abaacdf4f8fa0
Reviewed-by: David Faure <david.faure@kdab.com>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
... but choose HTTP/1.1 and continue connecting anyhow. According to
the NPN spec, actually we should choose SPDY:
"In the event that the client doesn't support any of server's protocols,
or the server doesn't advertise any, it SHOULD select the first protocol
that it supports."
However, some tested servers did not advertise anything and did not
support SPDY, so blindly trying the newest protocol would fail. We are
conservative in that case and choose HTTP.
Task-number: QTBUG-40714
Change-Id: Ia8aaf01fea74e13d9e4416306f85f1890b25559e
Reviewed-by: Richard J. Moore <rich@kde.org>
Change-Id: I6b551de331aa0386ea53d8e96f50b669777d2d69
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
We still have a bunch of Q_WS_ ifdefs in our code, which are easy to
mistake for Q_OS_ ifdefs when quickly scanning the code. By renaming
the ifdefs we make it clear that the code in question is dead.
In incremental follow-ups, we can then selectively either remove, or
port, the pieces that are dead code.
Change-Id: Ib5ef3e9e0662d321f179f3e25122cacafff0f41f
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
QDebug does not have noquote() in Qt 5.3.
Task-number: QTBUG-44021
Change-Id: If35b926d6b1e5bb9ad3534357630533dfcecd076
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
The text edit that shows which flags we have set should be updated in
PreviewWindow::setWindowFlags() and PreviewWidget::setWindowFlags()
but QWidget::setWindowFlags() isn't virtual so only the base class
one was called.
Change-Id: I5c9d47d003d5701dde1ab63df0d349f641d66f44
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
tst_collections.cpp
tst_collections.cpp(3138) : warning C4305: 'argument' : truncation from 'size_t' to 'bool'
tst_collections.cpp(3190) : see reference to function template instantiation 'void testContainerTypedefs<QVector<int>>(Container)' being compiled
with[Container=QVector<int>]
(repeated)
tst_qringbuffer.cpp(297) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
tst_qringbuffer.cpp(300) : warning C4309: '=' : truncation of constant value
tst_qringbuffer.cpp(306) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
tst_qrawfont.cpp(947) : warning C4309: 'argument' : truncation of constant value
tst_qsslsocket_onDemandCertificates_member.cpp(217) : warning C4189: 'rootCertLoadingAllowed' : local variable is initialized but not referenced
Change-Id: I6143d4ad121088a0d5bdd6dd2637eb3641a26096
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
Output the current active/modal/popup windows when receiving
FocusAboutToChange or FocusIn events.
Task-number: QTBUG-42731
Change-Id: Ia88e9a9b41f7c80fb7a2a048b06da56d989ff18a
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
The OpenGL windows should have some more obvious
transparent areas in them.
Change-Id: I7d000cd367208f99a79b11c341bf94062613f357
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
The window size was too small on high-DPI screens.
Save the default text color instead of setting it to black.
Change-Id: I78b50624110be0cb1d077d3782d421eb323f4fb0
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
[ChangeLog][QPA][Xcb] GLX and EGL code paths are now dynamically
resolved, making it possible for one build of a plugin to use both code
paths. Default is to use the GLX code path if available. This can be
overwritten by specifying QT_XCB_GL_INTEGRATION=xcb_egl as an
evnironment variable. Enable qt.xcb.glintegration.debug to get debug log
output of what integration is used
Change-Id: Ia9fa95fcca3d901b91dadb8c98a695fea0ae3b1e
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Add a functions to dump out texts character by character and
as code.
Task-number: QTBUG-43191
Change-Id: I1ac17f2485563f909b71bb1fbd1fd595d1d94223
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
If you press and hold a section in a header view you can extend the
selection to more rows by moving the mouse. This worked fine until you
moved the mouse outside the geometry of the header view. The expected
behavior was then to scroll the view (this is what happens with extended
selections on regular table cells).
[ChangeLog][QtWidgets][QHeaderView] Auto-scroll the view when making
extended row/column selections.
Change-Id: Ic65aa34d370e74054b2123ab57edb1add0e8adb9
Task-number: QTBUG-21201
Reviewed-by: Thorbjørn Lund Martsum <tmartsum@gmail.com>
- Fix prototype for glinfo() for Qt 4
- Add more event types and object type flags to event filter.
Change-Id: Ia4160b40486d054e860a339e7b5c9c28695330ae
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Add a set of helper functions and classes providing functionality
for dumping widget/window hierarchies and logging events. They
can be used by including a .pri file for diagnosing bugs and
comparing Qt 5 to Qt 4.
Change-Id: I0206f8e57b02540cd80a3e9446c894023d442ddc
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Unlike qtouchevents, this provides a touch area which logs its
events and devices.
Task-number: QTBUG-40461
Change-Id: Iaaa3589dd692caf8c7078f5ed2ff1e8b2322a369
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
The Overall goal is to make it possible to use correctly-
sized pixmaps in a predictable way, while still doing
something reasonable with small and large pixmaps.
(The recommended pixmap height is up to 18 points.)
Enable use of rectangular icons by selecting pixmaps
based on pixmap height.
Draw a low-resolution pixmap on retina displays if
there is no high-resolution pixmap available. Scale
large pixmaps to fit the available menu bar area.
Add a manual-test with various pixmap sizes
Task-number: QTBUG-33441
Change-Id: I1926181fe27cae526bae58022df3240bae9f8ac8
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
On X11, setting the transient parent is not enough to get it
centered w.r.t. its parent: it must also be a dialog window.
Change-Id: Icfc664e17e53f23cd025dead30e3966f859a1dc5
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
This is a very useful tool to test the behavior of a given platform
when it comes to rendering on three contexts to three window surfaces
from the gui thread and calling swapBuffers for each.
Change-Id: If3abd055d0dee7cfb24098484326aa24261556bc
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Widgets and layouts added or inserted to a layout are checked for:
- Not being NULL
- Not being the parent widget of a layout or the layout itself,
respectively
Without this commit, adding a widget to its own layout would result in a
CPU-hogging infinite loop. Now, a warning is written to stderr and the
add or insert function call is ignored.
The checks are implemented as public functions of QLayoutPrivate and
thus accessible in QLayout's descendants to be used in various
"addWidget", "insertWidget", etc functions.
Unlike 'classical' layouts like QGridLayout, QFormLayout does indeed
accept widgets that are NULL. To not break this behavior, any call for
the check functions first tests if the widget or layout, respectively,
to test is NULL or not and calls the check only in the latter case.
Automated tests for QBoxLayout, QGridLayout, and QFormLayout were added.
For an unpatched Qt 5.3, each of those automated tests will freeze as
explained in QTBUG-40609. For a fixed version, warning messages about
invalid parameters to addWidget/addLayout/... calls will be read by
QTest::ignoreMessage, resulting in a passed test.
Change-Id: I1522d5727e643da3f7c025755975aca9f482676d
Task-number: QTBUG-40609
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
