Unify all mid() functions in QtBase.

Up to now, Qt had at least 3 different implementations of the mid().
Only QString::mid implementation was not crashing on edge cases and
was protected against overflows, therefore I picked that one as the
base implementation, even if it has weird semantics for an invalid
input.

As a side effect QVector::mid was slightly optimized to not detach in
all cases (which follows current QList behavior). Documentation of
QVector::mid and QList::mid was updated to not mention "copy of data"
which could suggest that the mid() result is detached.

QStringRef::mid was fixed and now it follows general Qt behavior, by
returning a null value for a null input.

Change-Id: Ie9ff5d98372bd193d66508e6dd92b6ed1180ad9b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Add viewport transform to QMatrix4x4

This allows to easily create a matrix that performs the transformation
used by OpenGL fixed function to go from normalized device coordinates
to window coordinates.

This comes in useful if you need to perform the NDC->window coordinate
conversion inside a shader.

Change-Id: I183b3545bfb3eb1e8b13fc3172911b46926fcbb7
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Expose multisample settings on QOpenGLTexture

Change-Id: I877f4139aed8bb03b798818a3fac00dab1523ce1
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Avoid setting unnecessary parameters in QOpenGLWidget

QOpenGLFramebufferObject sets the texture parameters already, do
not set them again. Especially not GL_REPEAT, which is wrong and
breaks on devices that do not support REPEAT on NPOT textures.
What QOpenGLFramebufferObject does is just fine (it sets NEAREST/
NEAREST and CLAMP_TO_EDGE).

This is important for WebEngine where the QWidget-based web view
is using QOpenGLWidget.

Change-Id: I264d30118ce7adf50f68f2c7b9a5599a406b4362
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
QNX: Fix tst_selftest

GRAPHICS_ROOT and TZ environment variables are needed in child
processes in order to successfully run the auto test selftests.

Change-Id: I7befabd535b4c47b1e75acbe3d6158d0d9b811b3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
qmacmime: add support for public.rtf

Application like Safari on iOS posts rtf to the
pasteboard when copying html. With this converter added, you
can then paste rtf as html into Qt

Change-Id: I6b62bcc9cfc0b16a47d44bd8d74062226522526d
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
qmacmime: rename and move QMacPasteboardMimePlainText to the cocoa plugin

com.apple.traditional-mac-plain-text is not in use on iOS
according to Apples UTType reference. So we enable it only
for OS X by moving it into the cocoa port.

The order in which we instanciate convertors matters when
the application is reading data from the pasteboard.
But since QMacPasteboardMimePlainText should come before the
other "text/plain" convertors on OS X, moving it to the cocoa
port is safe as those convertors are instanciated after
those in qmacmime.

Change-Id: I76b9b14e5ce78f34e0f1ecbfee71e48a27a4687b
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
cocoa: remove rtf converter from cocoa

There is now a modified rtf converter in qmacmime
that can also write rtf back to the pasteboard, and
that works on both OS X and iOS.
So we can therefore remove the one from the cocoa port.

Change-Id: Ieed04502752290d2f139f98cec69477ff1edbe4e
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Merge "Merge remote-tracking branch 'origin/release' into stable" into refs/staging/stable
Accessibility: Update ComboBox text on arrow keys

Use ValueChanged to notify of changes in the ComboBox.
On Linux we need to update name and then send selection-changed for
Orca.

Task-number: QTBUG-36814
Change-Id: Icdd34adddeac532476a6dd910d1e8bd33bcd590b
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>
Accessibility Android: Fix states

Using the bit flags as parameters to the JNI functions would fail since
they'd always be cast to false instead of the c-style casts.

This fixes checkboxes reporting themselves as checkable and their check
state.

Task-number: QTBUG-38831
Change-Id: I30ab63ceabbec4cc2fbda9475e05523d915087fe
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>
QOpenGLTextureBlitter fix allocating 4 times as much memory as needed

and copying a lot of garbage.

Change-Id: Idf1d23d06423a98ce503c9bcf9614b12dd1fb92a
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Remove friend class QETWidget.

The class no longer exists in Qt 5.

Change-Id: Icd98c151f8e06910a3240d0bec6fff333a8ef3e3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Optimize QVector::mid

Change-Id: Iff7d9ec85a095c6712e6045e7708bb88eac629e1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Ensure we don't re-use webfonts where the "local" font has been requested

For webfonts, we can't rely on the fontDef (and hence the cache Key) alone,
since the resulting fontcache key might be strictly identical.
Instead we have to check if the cached engine doesn't belong to a webfont
when we're looking for a "local" font.

Change-Id: I2de11c8fdbef53362b66674d3429a042e1835757
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
Call tzset() before localtime_r() as the docs say.

Without it, one might run the risk of QDateTime::currentDateTime()
returning an invalid QDateTime the first time after changing timezone.

Change-Id: I3efb04d41e7fe4685f6cc5fb41b68424eb4b9eb8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Minor optimization for QTextLineItemIterator

Don't store unused values (pos_x and levels) and re-use
already calculated ones (itemStart, itemEnd, and itemLength).
Also const-ify some members to make the code a bit more clear.

Change-Id: Ied80ebf9e4e7e8a1d057e413a9bd24f84b8aaf92
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
QMacStyle: Always draw status bar in active state if the window is main.

On OS X, most controls are drawn active or inactive based on their
window's main state, NOT its key ("active" in Qt) state.

Change-Id: If447d0a537bc594978f7202e7888ceacb54ec8fa
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
QPainter on QBitmap: make setBrush(NoBrush) work as expected.

It had no effect because of an explicit check for NoBrush.
However the default in QBitmap is (unfortunately) QBrush(color0), rather
than NoBrush, so the brush must be updated when calling setBrush(NoBrush).

I suppose the real issue is that lastBrush is default-constructed in
QRasterPaintEngine, rather than starting with the brush from QPainter,
which is QBrush(color0) for the case of the bitmap. But no reason to
special case NoBrush here anyway.

Task-Number: QTBUG-38781
Change-Id: I9996ac12bf628920cfaf0de9c886f637a336028b
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Stop using setSharable in the Java-style mutable iterators

First and foremost, the STL-style iterators don't do this. Those don't
provide a guarantee that the container won't get shared again while the
iterator is active.

Second, there's no protection against a second mutable iterator being
created and resetting the sharable flag back to true.

[ChangeLog][Important behavior changes] The mutable Java-style iterators
like QListMutableIterator and QHashMutableIterator no longer set the
parent container to unsharable mode. If you create a copy of the
container being iterated on after the iterator, any changes done with
the iterator might affect the copy too.

Discussed-on: http://lists.qt-project.org/pipermail/development/2014-February/015724.html
Change-Id: Iccfe411d5558c85ae459cff944215614c392388e
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>