Enabling QQuickWidget and QOpenGLWidget

Enable child widgets (without a native window) that render to an FBO
and are composed with the raster backingstore by the platform plugin.
A preliminary version of QOpenGLWidget is included as private API.

Change-Id: I8f984a4d7db285069ce3d6564707942c823d890d
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Restore support for -title command line argument on X11, add -qwindowtitle.

-title disappeared between Qt4 and Qt5, due to all the refactorings around QPA.
Making the caption of the mainwindow configurable allows custom setups
for specific users or use cases.

[ChangeLog][QtGui][QGuiApplication] Restore support for -title command line
argument on X11, add -qwindowtitle on all platforms.

Change-Id: I73e6bf21248f3419178eba583b257172a175e74e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Albert Astals Cid <albert.astals@canonical.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Move setWindowIcon() up to QGuiApplication.

[ChangeLog][QtGui][QWindow]QWindow::icon() now defaults to the application
icon, which can be set with QGuiApplication::setWindowIcon().

Change-Id: Id1974e5cda81775e515c14b294f67fb99351c6c9
Reviewed-by: Albert Astals Cid <albert.astals@canonical.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Respect the DontUseNativeDialog option for QColorDialog

By reimplementing canBeNativeDialog() we ensure it is only shown
natively if the circumstances are correct. The change was modelled on
how QFileDialog implements the same checks.

Change-Id: If58e33d6d0547e95975d7c0453901fa592eb96a0
[ChangeLog][QtWidgets][QColorDialog] Ensured
QColorDialog::DontUseNativeDialog is respected when showing the dialog.
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Deprecate {QCoreApp,QAbstractEventDispatcher}::hasPendingEvents()

This function has a flawed design. It was flawed when it was added in
Qt 3.0.

A "false" return value is racy: any other thread running may post events
to the current thread, thus making the result stale. That includes Qt
starts for its own purposes when it comes to the main thread, like the
Scene Graph thread, the QProcessManager thread, the Windows
QAdoptedThread watcher thread, the Windows pipe writer thread, etc.

A "true" return is stable only if the selected thread is stopped, which
includes selecting the current thread (the case of QCoreApplication).
For that reason, this method should not be public, but a protected one
so that a public static could call it. But even that would not solve the
race condition from the previous paragraph (hence why
QCoreApplication::hasPendingEvents being deprecated too).

And, to top all of that off, all but one of the implementations access
the GUI thread's event loop counter in a non-thread-safe manner. I've
changed the documentation to restrict to the only currently-working use-
application.

[ChangeLog][QtCore][Event loop] QCoreApplication::hasPendingEvents and
QAbstractEventDispatcher::hasPendingEvents are now deprecated. Please
refer to the documentation for more information.

Task-number: QTBUG-36611
Change-Id: Iac61f307e9672839944ae2f75abb1aea30c419f6
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Optimize qt_memfill32 a little

Benchmarking shows it took up to 3.5% of Qt Creator's initialization
cost. Optimize by modifying only one variable per loop: instead of
updating n and dst128, we only update one variable at a time.

Removing the Duff's Device also improves the code, since the compiler
won't try to update dst128 four times per loop, only once.

The moving of the epilogue close to the prologue was just to make the
code a little cleaner.

Change-Id: I5b74e27d520ca821f380aef0533c244805f003b7
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Android: default palette taken from the Holo Light theme

Currently QAndroidPlatformTheme::palette has been returning null so
the default colors came from elsewhere.  Now they will default to
colors taken from the Holo Light theme to the extent possible.

Change-Id: I022c5ef679d9d0dcb76721a4d520492bc8a6f4cf
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Use QtPrivate::is_integral instead of listing each integer type

This changes the code added by 0e4d94edd0caac9d2378a00a0aa961a0be3ad796
by removing the Q_INTEGRAL_TYPE enum value and instead relying on our
private copy of typetraits.

Change-Id: Icb6c814a36125de0d712421b97e11e8abc0f7416
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Fix crash in MinGW when initializing font database

Make sure that stacks are properly aligned so that we don't crash in
SSE2 code (as used in QString).

Task-number: QTBUG-36807
Change-Id: I765c1972fbb0a4b0c2dc5e4465e1d19e00b3322b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
WinRT: move most of GUI event dispatcher logic into core

The native event dispatcher is responsible for delivering callbacks
to non-GUI handlers, such as network socket listeners. So, the non-GUI
logic is moved into the core dispatcher so that the event loop works
better for apps (and test cases) which use QCoreApplication.

Change-Id: Ic5f7d939cf164198fd39aa5880e265ae560b39b4
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
new QByteArrayList class

Initial submission of a new class QByteArrayList with the
purpose of aggregating and then joining QByteArray instances.

[ChangeLog][QtCore] Added new QByteArrayList class.

Change-Id: I2a9dc71ff7aadb19ebc129a0d47ac8cd33895924
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>