Commit Graph

39143 Commits

Author SHA1 Message Date
Qt Forward Merge Bot
ce7f14d2e0 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: Iec860bb703f983b7438e67c695b9c454e72b3e0f
2019-04-06 01:00:08 +02:00
Milian Wolff
f4c41b9797 Add missing _exit tracepoints for event handling
This allows tools that look for matching `foo_entry/exit` pairs in the
trace data to work properly. An unmatched `_entry` would otherwise
confuse them, making them think that the call stack is continuously
increasing.

Change-Id: Idff7f587ea25c46ec86ad623cc82d503db34a194
Reviewed-by: Christoph Sterz <christoph.sterz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-05 11:57:59 +00:00
Milian Wolff
127518deda Introduce Q_TRACE_SCOPE to simplify tracing of a function entry/exit
Additionally, we also add a Q_TRACE_EXIT which runs a trace point when
the scope is exited, leveraging qScopeGuard behind the scenes.
Q_TRACE_SCOPE uses Q_TRACE_EXIT internally - the difference is that
the _SCOPE version enforces the naming scheme of _entry / _exit for the
tracepoints, whereas Q_TRACE_EXIT can be used generically.

Change-Id: I4a2f5ea09f451fcf664d07fd493b679f7527ac06
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-05 11:57:52 +00:00
Milian Wolff
5f62202e6c Add tracepoint to qt_message_print
This allows us to deduce a lot about what a Qt application is doing,
since the debug output usually contains a lot of information.

Change-Id: I28a18afd151a1640a44ba8c7c9cd87d5d66c99b0
Reviewed-by: Christoph Sterz <christoph.sterz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-05 11:57:46 +00:00
Milian Wolff
6ce2a87c23 Forward declare all types required for compilation with -trace
This patch fixes compilation with `-trace lttng` or `-trace etw`. We
need to forward declare QEvent, QImageReader etc., otherwise the types
will be unknown while compiling the trace points.

In order to handle this generically, the tracegen utility is extended
to support a 'prefix text' in the `*.tracepoints` input files. Any
text within curly braces will be embedded as-is in the generated file.
This can then be used to add forward declarations for the types we
need, including potential namespaces and such.

Change-Id: I5cb16763ce0fcb48ce3ea4577578d468ff3a4f4b
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>
2019-04-05 11:57:39 +00:00
Friedemann Kleint
df7eec6bcb Windows QPA/File dialog: Refactor code copying non-file shell items
Remove the canCopy() check which is not required and pass up the error
message. Remove special characters and use the base name of the display name
which can be an URL.

Task-number: QTBUG-71785
Change-Id: I22966cb8d1f5bca0bbca71cf3ebe66e4ede1a747
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Andre de la Rocha <andre.rocha@qt.io>
2019-04-05 10:28:00 +00:00
Qt Forward Merge Bot
0998a9d1d5 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: I010a6322d12e038fdce247a58dfb05e204c2ff3b
2019-04-05 10:57:24 +02:00
Albert Astals Cid
bdee1189bf png handler: initialize all the variables passed to png_get_IHDR
oss-fuzz found at least width is sometimes not initialized, and we're
initializing almost all of them in most cases so be complete.

the oss-fuzz instance was
==1==WARNING: MemorySanitizer: use-of-uninitialized-value
	    #0 0x667c43 in operator!= /src/qtbase/src/corelib/tools/qsize.h:173:25
	    #1 0x667c43 in setup_qt /src/qtbase/src/gui/image/qpnghandler.cpp:403

Change-Id: Idb9aaf5ab85509d9c893beaf8d9118339ba46be7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2019-04-05 08:53:01 +00:00
Kai Koehne
6d049ad63d Remove unused static method
The only use of this method got removed already in commit bebae37376.

Change-Id: I9757cbe34710efd9a9d31c74f81e01da40453ff9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2019-04-05 07:51:25 +00:00
Kai Koehne
5f7b0e5ff4 qmake: Remove dead code
Silences a clang warning

Change-Id: I5ade49326afcce964ffb5c24b5708977950d123e
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2019-04-05 07:48:34 +00:00
Eirik Aavitsland
4e24bb24a2 Remove noisy warning for undefined QGradient preset
This runtime warning was recently introduced in the fix for an
assert/crash when creating a brush with an invalid Preset
value. However, that overlooked the usage where an unknown value is
passed to QGradient constructor, and the code afterwards checks if
the result is a NoGradient or not. It turns out that such usage is
already established as legitimate, including in the Qt Quick Rectangle
code, so this warning would be spit out continuously for perfectly
legal qml code.

Change-Id: Id60aed0817da0214b6cf17edd245f67e26470413
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2019-04-05 07:39:25 +00:00
Dmitry Shachnev
b404cd930e Make qt_is_ascii work properly on big endian systems
Change-Id: Ia053fbc854a77e333edadb0be6c2e04826b8fbdb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-05 06:56:21 +00:00
Friedemann Kleint
5a168507b1 Manual dialog test: Output URLs when testing QFileDialog
Change-Id: Icfaedcd68ff387cc888e41ec0b1db1810122b229
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2019-04-05 05:57:17 +00:00
Volker Hilsheimer
7935d86e7d Populate test data for reverse lookups using system tools
Hardcoding IP addresses and their respective DNS records is fragile.
We care about Qt producing the same result as other DNS querying tools,
so testing that instead.

Running a python script for this is easiest, and assumed to be quite
reliable.

In case where python fails/is not present, fall back to nslookup.
That tool is available on Linux, macOS, and Windows, although the
output it produces varies. This change implements very basic
line-parsing that can interpret the various results encountered
during testing on those platforms.

This also reverts commit bbaceff253fae13d8e56691bc9de7e1981db5118,
which blacklisted the tests that failed due to changes in DNS
records.

Use the opportunity to replace usage of gitorious.org.

Change-Id: I967de226bd603c805df7fe3ed4e871d92d2d0750
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
2019-04-05 05:50:18 +00:00
Orgad Shaneh
808758ad14 QFileSystemEngine: Fix typo
Change-Id: I538ef771dcf6b757025c8d31f13a91222c2ebd3e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-05 03:12:04 +00:00
Allan Sandfeld Jensen
7d02fb3045 Fix recursive include
qatomic.h included qbasicatomic.h which included qatomic.h.

Due to a define in qbasicatomic.h, the definitions from QAtomic would
change depending on which was included first. Fortunately qbasicatomic
does not need qatomic.h so the include can be removed.

Change-Id: I086009f2e16a6e20b2b76fc6b3bf66a343414206
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-04 16:59:05 +00:00
Joerg Bornemann
4eb865cd38 Remove superfluous inclusion of qtwidgets-config.pri
Every module already includes its own config.

Change-Id: I1ef630092f61f118d79dc9b39ce38f4bdea14f43
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2019-04-04 09:48:08 +00:00
Morten Johan Sørvig
e227c33455 wasm: improve event coordinate handling
targetX and targetY are canvas-local coordinates,
while Qt generally works with window-local and global
coordinates.

Add coordinate mapping calls where needed and make
sure we pass correct coordinate types to Qt.

This starts mattering when we have canvases which
are not located at (0, 0).

Change-Id: I28563310ca17d0cc5535317cff99fcd82d3723db
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
2019-04-04 09:30:02 +00:00
Morten Johan Sørvig
7bae1bd5cb wasm: hide canvas text caret
Another side effect of setting contenteditable on the
canvas. Seen on Firefox.

Change-Id: I789ba4d7e6fbbdbf14b66fe1ae57183ec04e04bb
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
2019-04-04 09:29:50 +00:00
Andy Shaw
5caaa0b6a2 Doc: Update QImage::depth to indicate we support 64 bpp now
Change-Id: Icbd4920ed03655cec483a402de9d0ae3378ff3ef
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2019-04-04 08:31:47 +00:00
Allan Sandfeld Jensen
7518da2441 Update scanline documentation
Change-Id: I019b102e99f99377b528ad5c8a4ccb2a7929f14f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-04 08:31:33 +00:00
Friedemann Kleint
ab47587856 Windows QPA/File dialog: Avoid UI hangs caused by empty results
Typing in invalid URLs results in empty result lists.
Emit rejected() in this case.

Task-number: QTBUG-71785
Change-Id: Ia257b85a5c4370227f753752f6a473bbb3a054be
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2019-04-04 08:28:07 +00:00
Qt Forward Merge Bot
f80b7995f3 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: Ia7328524f2cd9d5995ac8705f0fe0bf570b2e831
2019-04-04 01:00:07 +02:00
Joerg Bornemann
6fff899697 Document in which Qt version a qmake function was introduced
...starting with Qt 5.0.0.

The text is manually inserted there, because \since does not work
within sections.

Task-number: QTBUG-74737
Change-Id: I0fe2d0a113d48be0266030c8466b062c6f743aab
Reviewed-by: Robert Szefner <robertsz27@interia.pl>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
2019-04-03 20:23:29 +00:00
Morten Johan Sørvig
c4d46723eb wasm: disable XDG_RUNTIME_DIR warning
XDG is not very relevant on the Web platform.

Change-Id: Ibd885e28da15114d0601c73e34dec556e65cbe75
Reviewed-by: David Faure <david.faure@kdab.com>
2019-04-03 18:41:49 +00:00
Friedemann Kleint
06d753e87b Brush up and stabilize tst_QSizeGrip
- Remove unused dummyWidget and thus empty slots initTestCase(),
  cleanupTestCase().
- Add slot cleanup() checking for an empty top level widgets list
  and introduce QScopedPointer to ensure it passes.
- Use QTRY_VERIFY in hideAndShowOnWindowStateChange().

Flakyness has been observed on openSUSE:

 FAIL!  : tst_QSizeGrip::hideAndShowOnWindowStateChange(Qt::Window) '!sizeGrip->isVisible()' returned FALSE. ()
           Loc: [tst_qsizegrip.cpp(126)]

Change-Id: I340fc1892dc00bcff1985e5a8a1e535975736484
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
2019-04-03 15:06:06 +00:00
Tor Arne Vestbø
accf7ce024 macOS: Disable explicit layerContentsPlacement
It was needed to allow lazy resize of the backingstore IOSurfaces, but
that feature hasn't been enabled yet, and explicitly setting the layer's
contents placement to NSViewLayerContentsPlacementTopLeft resulted in
the layer animating when the window was moved from screens of different
scale factors.

We need to investigate this further, but in the meantime fix the
visual regression by disabling the explicit layer contents placement.

Change-Id: I63ea1eab9cf3fa6480e88844918ed98e6aa72620
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2019-04-03 08:01:28 +00:00
Friedemann Kleint
163a0475eb Windows: Fix QFileSystemEngine::id() for FAT32 drives
GetFileInformationByHandleEx() which is used to to obtain the ID, has been
found to fail on FAT32 (USB removable drives). Fall back to
GetFileInformationByHandle() for these.

Fixes: QTBUG-74759
Change-Id: Ib3ef60a6bf9e9edaf41af86bf71666001cb0aa58
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-02 16:21:39 +00:00
Alexandru Croitor
e5f0fec762 Fix disabling AUTOMOC and AUTOUIC for generated resource cpp files
when using qt5_add_big_resources.

The previous approach of just setting SKIP_AUTOMOC and SKIP_AUTOUIC
on the generated source files is not enough because if AUTOMOC is
globally enabled, AUTOMOC will still run for the
rcc_object_{outfilename} target, which ends up creating a
mos_compilation.cpp.o file and adding it as a target object to the
target.

Thus later when $<TARGET_OBJECTS:rcc_object_${outfilename}> is passed
to the rcc invocation, the expression evaluates to a list of two
files: the rcc-related .o file and the mocs_compilation.o file.
Obviously that breaks the rcc invocation.

The fix is to disable AUTOMOC and AUTOUIC on the whole target, instead
of just the source files. This prevents the creation of the
mocs_compilation.cpp file.

Fixes: QTBUG-74270
Change-Id: I51f757b110e940fe224010acb25b88c52ef612b1
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2019-04-02 12:22:29 +00:00
Morten Johan Sørvig
f99fe9cee9 wasm: implement QDesktopServices::openUrl()
Call window.open(url, ”_blank”) for a new tab.

Change-Id: I227904f905262c7aedd086203ed816b53f66359c
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
2019-04-02 11:19:47 +00:00
Allan Sandfeld Jensen
0683bbc67c Fix remaining Q_DECL_OVERRIDE instances
Change-Id: I512ea5a6c8cf2928b276af7f83f00a1df5879595
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2019-04-02 10:48:29 +00:00
Venugopal Shivashankar
05d9195669 Doc: Use the \nullptr macro instead of 0
This enables overriding the macro so that it translates
to 'None' in the Qt for Python context.

Change-Id: Ib3cecf57eeb0405a1929309b71e9f012a07f11cf
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
2019-04-02 08:14:07 +00:00
Eskil Abrahamsen Blomfeldt
a65800cc68 Add a clarification about "characters" to QTextCursor docs
The function name QTextCursor::positionInBlock() may give users the
idea that it can be displayed to the user as the visual position of
the cursor in the current block. This becomes confusing with some
writing systems, since e.g. a surrogate pair will count as two
characters while only representing a single visual grapheme.

Since it is an side effect of the encoding that will be unexpected to
many, and since it also touches on some linguistic complexities, we
add a note to the documentation to make users aware of the
consideration needed.

Task-number: QTBUG-74725
Change-Id: Iba28ba8a6ad07ee38dbb7e6a5a4b68c93d4da76a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: René J.V. Bertin <rjvbertin@gmail.com>
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
2019-04-02 06:51:21 +00:00
Qt Forward Merge Bot
2f8dcdf93c Merge "Merge remote-tracking branch 'origin/5.12' into 5.13" into refs/staging/5.13 2019-04-01 23:08:25 +00:00
Qt Forward Merge Bot
ffe9c395dc Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: Ia5d893e57deb78bc32e2053a5a79543ff847fe32
2019-04-02 01:00:26 +02:00
Morten Johan Sørvig
81ed119da1 wasm: make windows fullscreen by default
(fullscreen as in use the entire canvas area, without
showing window decorations)

This is a better default for Qt on the web where window
decorations are not common. We also avoid the “window
close” trap, where there is no way to re-open a closed
main window.

Change-Id: Ie0fbf6ada3f49244bee765ea882acb473809e715
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
2019-04-01 20:24:58 +00:00
Alexander Volkov
011794130c Forward physical parameters for derived QImages
More specifically, for masks and rotated images.
Add tests for it, also add tests that image metadata is
forwarded for converted and copied images.

Fixes: QTBUG-49259
Change-Id: I05d4a468b17f53a2625500b871c01b2c53b981a1
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 15:21:27 +00:00
Alexander Volkov
685b8db13a Forward devicePixelRatio in QPixmap::mask()
Also add a test checking that devicePixelRatio is forwarded to
derivatives of QPixmap.

Change-Id: Idb2b3f033ccc0fd49bf54b11f5dffbce5a19b006
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 15:21:18 +00:00
Edward Welbourne
954b73445c Refine underflow check in QLocaleData::convertDoubleToFloat()
A string can parse as a non-zero double that's smaller than the
smallest float yet be a faithful representation of the smallest float.
So rather than testing for non-zero doubles less than the smallest
float, test for non-zero doubles that cast to float zero; these
underflow.  This means small values close below the smallest float
shall round up to it, rather than down to zero, requiring a tweak to
an existing test.  Added a test for the boundary case (and tidied the
test data).

Fixes: QTBUG-74833
Change-Id: I4cb30b3c0e54683574b98253505607caaf88fbfb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-01 14:40:14 +00:00
Dmitry Kazakov
e453222414 Fix tablet jitter on X11
We should get the correct stylus position from the valuators,
not from the X11-provided global position. Global position is rounded
to the nearest FP16 values, which is not enough for smooth painting.

[ChangeLog][Platform Specific Changes][X11 / XCB] QTabletEvent
coordinates now come from AbsX/AbsY valuators in the X11 event, in
more precise 32.32 fixed-point format, scaled to fit the virtual
desktop.  It's possible to revert to using the legacy 16.16-format
event_x/event_y coordinates as in previous releases by setting the
QT_XCB_TABLET_LEGACY_COORDINATES environment variable.

Task-number: QTBUG-45375
Fixes: QTBUG-48151
Change-Id: Ie701446b3586296bcb8fb09158f387ba6a7cbf07
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
2019-04-01 14:36:47 +00:00
Timur Pocheptsov
409e3eab09 QMacStyle - fix PE_InticatorTabClose handling
for the case a custom style sheet is in use and QStyleSheetStyle
replaces the widget (close button) with its parent (QTabBar).
We still need this button though to compare against tabButton
on a hovered tab. This allows us to have, indeed, native-looking
tabs as documented (aka similar to Safari or the "Terminal" application).

Change-Id: I53ff78699e705db6d7c7b84774b8e188a1277535
Fixes: QTBUG-61092
Fixes: QTBUG-74689
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 14:11:25 +00:00
Andy Shaw
6ccbe7ffdf macOS: When a menu item has an italic font it should respect this
Change-Id: Id8d2c5c0d0407ead66700d38634f342f489a2842
Fixes: QTBUG-69489
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 13:10:55 +00:00
Eirik Aavitsland
3b7db8ac90 Fix assert/crash when creating QBrush with null QGradient
The QBrush constructor taking a QGradient would assert or crash if
passed a null (NoGradient) gradient. But it is not necessary for the
API to be as brittle as that: instead the result can simply be a null
QBrush object, i.e. the same as the default QBrush() constructor
creates (style == NoBrush).

This issue comes up now since with the recent introduction of
QGradient presets, the API opens for using QGradient directly, whereas
earlier, only the subclasses QLinearGradient etc. were to be used.

Fixes: QTBUG-74648
Change-Id: I1a9b1c4654e4375aa6684700a262cc0946851448
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2019-04-01 11:56:42 +00:00
Morten Johan Sørvig
69beb5f5a0 wasm: add resizeCanvasElement() API to qtloader.js
HTMl does not have per-element resize events, which
means Qt has not way of knowing that a canvas has been
resized and that the canvas buffer size should be updated.

Depending on the use case, the hosting JavaScript code
that caused the canvas resize could also inform Qt
that the canvas has been resized. Add API to do this,
which calls the existing canvas/screen resize implementation.

Other solutions taken/not taken:

- browser window resize events: these are available,
and we install an event handler in qwasmeventtranslator.cpp.

- DOM mutation events: would detect changes to the
the size attributes themselves, but not if the size
indirectly changed, e.g. “width: 100%” depends on the
parent width. Not implemented.

Change-Id: Ib324bb30f523e9fceea68000b95bf857a1d36b6c
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 07:18:05 +00:00
Morten Johan Sørvig
73db765aaf wasm: support adding and removing canvases at runtime
Add qtloader API:
  addCanvasElement()
  removeCanvasElement()

These functions call the corresponding add/remove screen
functions on QWasmIntegration.

Task-number: QTBUG-64079
Change-Id: I537c11f3b5fb9240cca9b6313dd45f803d865ac6
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2019-04-01 07:17:58 +00:00
Joerg Bornemann
9e97d64ccd Fix installation of .pdb files for applications that have VERSION set
For applications that set VERSION the installation targets of pdb
files were wrong in qmake's nmake Makefile generator.

Replace code that tries to reconstruct that target's versioned
extension with TARGET_EXT which already contains the fully resolved
target extension.

Fixes: QTBUG-74265
Change-Id: I9553a5f70170e077a59c866079ae51647ae80bef
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
2019-03-31 12:45:24 +00:00
Joerg Bornemann
3cdf46059a Let "qmake -install qinstall" set default permissions 0644 and 0755
...like the install commands before Qt 5.9 did.
This ensures consistent permissions. Also, we can throw away the code
that took care of removing and re-adding the read-only flag on Windows.

Change-Id: I06bc3af8817f18c016119fbcb7360800d6c129bd
Fixes: QTBUG-74733
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-03-31 12:44:41 +00:00
Christian Ehrlicher
ed49a84e6c QListWidget: don't hide setBackgroundColor with QT_DISABLE_DEPRECATED_SINCE
QListWidget::setBackgroundColor() is a virtual function. Hiding this
function when compiling/linking against QtWidgets when
QT_DISABLE_DEPRECATED_SINCE is set will therefore screw up the vtable
and it will crash on runtime.
Therefore don't surround them with QT_DEPRECATED_SINCE macro.

Fixes: QTBUG-74665
Change-Id: Icb0f253117a1e55a338d2d6969ec2d59fbd0679d
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: David Faure <david.faure@kdab.com>
2019-03-31 12:25:32 +00:00
Laszlo Agocs
28a264cfe2 Fix alpha blending regression with WA_StacksOnTop QOpenGLWidgets
0bc4288689 in Qt 5.6 introduced support for premultiplied alpha in the
raster-rendered QWidget content. Unfortunately this introduced a
regression for OpenGL content from QOpenGLWidgets with WA_StacksOnTop
set: these used standard alpha blending in 5.5 and earlier, and
switching them to premultiplied (in case the - unrelated - raster
content has a _Premultiplied QImage format) breaks all content that
was done with non-premultiplied alpha in mind, for example the qopenglwidget
example's "Transparent background" checkbox.

Restore the pre-5.6 behavior.

Fixes: QTBUG-74285
Change-Id: I76fcadd53cd436efa2b619b8d6739270995d044f
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2019-03-30 19:22:17 +00:00
Yuhang Zhao
387f120bf9 Fix cross compile on Ubuntu
When cross compiling on Ubuntu with LTO enabled, the linker will complain about the "-fno-fat-objects" parameter even if the "-fuse-linker-plugin" is passed it.
But if the "-fno-fat-objects" parameter is removed, the linker will complain about "don't support linker plugin in this mode".
Remove both parameters can fix this.

Change-Id: I2d792ca70737f2e82a360bfc597f2b110513b954
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-03-30 07:34:30 +00:00