Enable devicePixelRatio for non-Apple platforms

Remove #ifdef Q_OS_MAC around devicePixelRatio code. We are planning
to make it available on other platforms.

Task-number: QTBUG-38858
Change-Id: I25230cb53ea1291095335ef5883b15087e44f6b8
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Android: Fix debugging.

When re-install a package without uninstalling it first, a few files
are leftover from the previous installation which makes the debugging to
fail.

Change-Id: I603491668bcec2a6f8054951ea2dea806fcc4c88
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
QCommandLineParser: support extremely concise option configuration in C++11

The goal of this commit to make the code in the test work:

    QCommandLineParser parser;
    parser.addOptions({
        { "a",                "The A option." },
        { { "v", "verbose" }, "The verbose option." },
        { { "i", "infile" },  "The input file.", "value" },
    });

For this, QCommandLineParser needs a version of addOption that can
take a list of options. That's what addOptions() is for.

More importantly, the QCommandLineOption ctors mustn't be explicit.
OTOH, any implicit conversion from QString or QStringList to
QCommandLineOption is also undesirable.

To solve this dilemma, add new QCommandLineOption ctors that just
take one argument and are explicit, and make the existing ctors
implicit. In order to avoid ambiguities, remove the default values
of their resp. 2nd arguments. The new ctors are by intention not
\since 5.4, as they are completely transparent to the user.

Et voila, even better than getopt_long(3).

[ChangeLog][QtCore][QCommandLineParser] Added addOptions() method.

Change-Id: I5e779f3406cd0f6c8ec6ecbf6c8074af226de300
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Android: add support for Android.R.attr.state_accelerated

This lets the Qt Quick Controls Android Style choose the appropriate
window background that is meant to be used with HW acceleration.

Change-Id: I65d6f9319d77364637460e7c4ebb7ea3f4d53f12
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Android: extract window style attributes

Task-number: QTBUG-39215
Change-Id: I29120f5dcc97051705bc6ebacfa5843d8953810b
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Reviewed-by: BogDan Vatra <bogdan@kde.org>
QFileDialog: implement getOpenFileUrl and friends for real

i.e. make them support remote URLs.
To avoid code duplication, getOpenFileName/getSaveFileName/getExistingDirectory
are now implemented in terms of getOpenFileUrl/getSaveFileUrl/getExistingDirectoryUrl.

Change-Id: If409ac9ab72c2a65f04e2ef1dc28e7d47bbcd73c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
winrt: Refactor backing store

Thanks to new features in ANGLE, the backing store implementation
complexity can be greatly reduced. By using ES3 framebuffer blit,
no shader code is required, and the shader loading code and blit shader
can be removed.

Change-Id: Iab3d915e279ad6468a75ef6257794f12acd8cb65
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
winrt: Handle dispatcher thread change

If the calling thread changes when processing events, the dispatcher
will no longer have thread access and event processing will fail. This
can e.g. prevent new threads from being created. To remedy this, the
dispatcher object is re-fetched if the thread is changed.

Change-Id: I519cff521f9b84211db3f28a7a28b532de44a6a4
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Do not use GLES3 functions in a GLES2 context

Just like the recent fix for VAOs on iOS, where we might deploy a
GLES3-enabled binary on a GLES2-only system, the same issue is
potentially present for blitFramebuffer and renderbufferStorageMultisample.
Handle this properly.

Change-Id: I87268478f1de479dc2c106b46d6e9b84e866fcd5
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Avoid crashing in QOpenGLWidget::metrics

When creating child widgets in the derived class' constructor, the screen
cannot be retrieved via window() since it still returns null. Handle this
case properly.

Change-Id: I65bf7f9c338ce8a3ddab8ad7886cfe2f1f253c82
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Add missing precision qualifiers in qopenglwindow example

Make GLES implementations happy.

Change-Id: Ib389e379f23794eee0fa71ca26b863e56cee662e
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Avoid repaints and swapbuffers when the platform window is already gone

On Linux at least the qopenglwindow example sometimes shows
"QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined"
when closing the window and exiting the application. This patch avoids
this by not triggering repaints anymore when the platform window is destroyed.

Change-Id: I54bd41e5c1471f7cdfec89f8ec3be48d1438be39
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Clean up the QOpenGLWindow example

1. Use includes without module prefixes, as is the custom in examples.
2. No inline functions to make it more readable.
3. Pause animation on pressing P and document our signal connection a bit more.

Change-Id: I68dc3d4c74b639cf3fec17b63b7f49626db58bdb
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Add missing #include <qdatastream.h> or <qiodevice.h>

Lots of code depended on an indirect includes from qstringlist.h.

Change-Id: I33d0dce33d64302d6c0e49180cc1249b90ab27c5
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Android: Say hello to gradle!

Add build.gradle script, move Android template files to another folder.
These files are specific to every project, and they should be copied to
then project android folder.

Switching from Ant to Gradle brings lots of advantages:
 - it is way faster when rebuilding (25-50% faster than ant).
 - it enables first class Android Studio integration.
 - adding Android Extras libs (e.g. Google Play services, OBB, etc.) to
   your project is now painless.

[ChangeLog][Android] Added Gradle support to build the APK.

Change-Id: I9c8cb355118c9ac1997270c8b80916eca43fce4d
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Micro-optimize qdoc codeparser.

There is no need to allocate new string while a simple reference is
enough.

Change-Id: I137b58fc180fe9a7bff9d0f9e546ca04aa9f4696
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Windows/QGuiApplication::topLevelAt(): Skip mouse-transparent windows of other processes.

Search again when a non-Qt window with WS_EX_TRANSPARENT set is found.

Task-number: QTBUG-40555
Change-Id: I3f53be626f52dc25429661ac8ea5e9f6bb163596
Reviewed-by: Björn Breitmeyer <bjoern.breitmeyer@kdab.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Add some missing STL typedefs and functions to QStringRef and QByteArray

These will be needed in some template code that is to come.

Change-Id: I5b93f4320313f7b15a6404de2c98f85485735fda
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Fix the docs for resizeGL in QOpenGLWindow

Some of it was blindly copied from QOpenGLWidget and it
does not apply.

Change-Id: I73f358f74d286d3757a3a77a9bfe06887d57514a
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Add default format to QSurfaceFormat

Add defaultFormat() and setDefaultFormat() statics to QSurfaceFormat.
These define the default values for the requestedFormat members of
QOpenGLContext, QWindow and QOpenGLWidget (and implicitly QOpenGLWindow,
QQuickWindow, etc.)

This replaces QQuickWindow::setDefaultFormat() which can now be removed.

The main inspiration here is not the convenience (avoiding setFormat() calls
for all windows/widgets), but robustness: by setting the format once at the start
of the application, all windows and contexts, including the internal share context
used by QOpenGLWidget and QQuickWidget, will use the same format, eliminating
the possibility of failing due to trying to share between incompatible contexts.

Furthermore, since such a functionality is anyway mandatory for QQuickWindow
(due to the possibility of creating windows from QML code), extending it to
QSurfaceFormat and QOpenGLContext/QWindow is the next logical step.

Change-Id: Ie94486adc489d17fecfcebb7050fecedffd2688b
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>