Commit Graph

1586 Commits

Author SHA1 Message Date
Ivan Solovev
9b1d769fd0 UndoFramework example: make the background visible
Existing background image was not displayed correctly due to scaling
(see the description in related Jira task).
This commit increases the thickness of the lines, so that the grid
is displayed correctly

Task-number: QTBUG-89896
Pick-to: 6.0 5.15
Change-Id: Iaa8218a5e9852adbc40715e86862ac3b34e1fbec
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2021-01-11 12:59:07 +00:00
Giuseppe D'Angelo
c34c6af374 Replace some more erase/remove patterns with removeIf
Change-Id: I6c6f33450fbfd798e5ef71a8ba18f590581dc3a2
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-01-10 15:02:47 +01:00
David Skoland
27d96b4789 Replace QtTest headers with QTest
Complete search and replace of QtTest and QtTest/QtTest with QTest, as
QtTest includes the whole module. Replace all such instances with
correct header includes. See Jira task for more discussion.

Fixes: QTBUG-88831
Change-Id: I981cfae18a1cabcabcabee376016b086d9d01f44
Pick-to: 6.0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-12-22 15:20:30 +01:00
Sona Kurazyan
81ed78c293 Improve the QtConcurrent ImageScaling example
Provide execution context to QFuture continuations, instead of using
QMetaObject::invokeMethod calls for running in the main thread.

Change-Id: Ica7de19494065d677ffc94224781bfbe292b4f21
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2020-12-11 11:45:45 +01:00
Timur Pocheptsov
b283ce1e83 secureudpclient - a speculative fix for non-reproducible crash
Not much information in a bug report: QByteArray is protected from negative
sizes and QUdpSocket too. FWIW - add one more check, similar to what
the server counterpart already had.

Pick-to: 5.15 6.0
Fixes: QTBUG-83457
Change-Id: I585fa90e0a258d2257e4fed2f24c52b47548bcbb
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2020-12-10 22:07:12 +01:00
Shawn Rutledge
8e74ee0791 Update Drop Site Example docs: mention the new markdown support
Amends 4edcea762d

Change-Id: Ide3e7a67b6604d07b76edcfe484c8d29e4e848fb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2020-12-01 20:20:18 +01:00
Andreas Buhr
10b6a87679 Fix documentation links to High DPI documentation
The documentation on High DPI was recently rewritten, renaming
several sections. This patch fixes the links which were broken
by this change.

Task-number: QTBUG-88533
Pick-to: 6.0
Change-Id: I5e9417554270a6740986d7cec5e3433d043e5560
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-12-01 15:48:53 +01:00
Joerg Bornemann
b71c04353d CMake: Work around building dbus 'controller' example with qmake
Similar to what has been done in 5138a970f3, we need to adjust the
remotecontrolledcar/controller dbus example to be built with qmake.

In the CI we first build the examples with CMake in the source
directory. That creates some generated source files in the dbus example
dir.

Then, the examples are (will be) built ouf of source with qmake, and
those generated source files will be placed in the build directory.

When building with MSVC, there's a peculiarity with nmake/jom's
inference rules that lead to picking up the generated car_interface.cpp
from the source directory, instead of the build directory.
See QTBUG-13496 for details.

car_interface.cpp, built with CMake is generated to include
car_interface.moc.
car_interface.cpp, built with qmake does not have this include, but the
build system calls moc on car_interface.h.

All this leads to duplication of the meta object for
OrgExampleExamplesCarInterfaceInterface, preventing successful linking.

Work around this issue by turning off the generation of nmake/jom
inference rules.

Task-number: QTBUG-85986
Change-Id: I0a6ca9f880b63f05a4e9f2032e44d3b391d8a756
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-11-30 23:17:48 +01:00
Volker Hilsheimer
6cb36d825d Rename Application Example
Prefix it with "Qt Widgets -" to make it a bit clearer in the list of
highlighted examples which module this one is about.

Pick-to: 6.0 6.0.0
Change-Id: I0bf65b02db72173f1adfe0bcf8657be7905dbd6c
Reviewed-by: Tuukka Turunen <tuukka.turunen@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-11-26 14:43:20 +01:00
Volker Hilsheimer
78cbb25b9d Use event cloning rather than copying
Fixes: QTBUG-88834
Pick-to: 6.0 6.0.0
Change-Id: I8c21b07c9d8491f26589f29b04d552835b3cbd11
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-11-25 22:08:09 +01:00
Friedemann Kleint
d3ba1b321b i18n example: No longer ignore return value of QTranslator.load()
Adapt to qtbase/86ebe46f591d33dc76e2f764524c988dd72f4437.

Change-Id: Ie45d43b3eabe60195622d69458e3d881139f9ce1
Reviewed-by: Liang Qi <liang.qi@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-11-19 17:27:30 +01:00
Sona Kurazyan
190b77463d Improve QtConcurrent ImageScaling example to demo new features
In order to demonstrate the new functionality, changed the example to
download the images from the network, scale and show them by attaching
different continuations to QFuture. Because QtConcurrent::map is not
used anymore, removed the suspension functionality (supporting
suspension of download would complicate the logic).

Task-number: QTBUG-87205
Change-Id: I5a48b63195d28025ae8c5de28bc6d6178dad03db
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
2020-11-12 08:56:14 +01:00
Topi Reinio
5d8a04f007 Doc: Fix documentation warnings for Qt Widgets
- Exclude forwarding headers to Qt GUI as they caused the headers
  to be parsed twice.
- Drop documentation for removed example

Task-number: QTBUG-86295
Change-Id: I08eb46b7c7f813f103cc545f931896be99a3ccec
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-11-12 06:55:01 +01:00
Shawn Rutledge
f5c7799f59 Support the markdown underline extension
MarkdownDialectGitHub now includes this feature, so *emph* is italicized
and _emph_ is underlined. This is a better fit for QTextDocument capabilities;
until now, _underlined_ markdown could be read, but would be rendered with
italics, because in CommonMark, *emphasis* and _emphasis_ are the same.
But QTextMarkdownWriter already writes underlining and italics distinctly
in this way.

[ChangeLog][QtGui][Text] By default (with MarkdownDialectGitHub), markdown
_underline_ and *italic* text styles are now distinct.

Fixes: QTBUG-84429
Change-Id: Ifc6defa4852abe831949baa4ce28bae5f1a82265
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-11-07 09:35:11 +01:00
Volker Hilsheimer
4a66fb9d76 Fix a bunch of qdoc warnings
Remove or fix references to removed APIs, and some qdoc syntax fixes.

Change-Id: I67d71062cd7a29f4eb74b02199b1482af5e59fc0
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-11-06 10:16:31 +01:00
Allan Sandfeld Jensen
b26fa9722f Add multi key bindings to QShortcut
This makes it feature comparable with QAction, and makes it possible
to use as a backend for QAction, and fixes a few missing alternative
keybindings in qtwidgets.

Change-Id: Iaefc630b96c4743fc5ef429dc841870ddd99fc64
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-11-04 10:32:38 +02:00
Volker Hilsheimer
a50f0f045d Get rid of all instance usage of QFontDatabase
All QFontDatabase APIs are static, use them accordingly.

Task-number: QTBUG-88114
Change-Id: I0e4a7508646037e6e2812611262eed8b6d7ad3de
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
2020-11-03 20:36:34 +01:00
Shawn Rutledge
4edcea762d DropSite example: support markdown
If the mime data includes text/markdown, display it decoded in the QLabel,
and also display the raw markdown in the table below.  QLabel supports
markdown since 51cbd5288c.

Ideally we should add proper support for markdown to QMimeData, but
it's too late to do that for Qt 5.

Pick-to: 5.15
Change-Id: I2a9998e4b239658fe49f39786e7c4fdd0c08b21a
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2020-11-02 16:08:36 +01:00
Sona Kurazyan
ff0ba7e2d7 Forbid implicit conversions between QFuture and other types
- Remove the casting operator of QFuture<T> to T. It calls
  QFuture::result(), which may lead to undefined behavior if the user
  has moved the results from QFuture via QFuture::takeResult() before
  trying to do the conversion.

- Disable implicit conversion of QFuture<T> to QFuture<void>, by making
  the constructor explicit. If the users really intend to do the
  conversion, they should do it explicitly.

[ChangeLog][Source-Incompatible Changes][QFuture] Implicit conversions
of QFuture<T> to T and to QFuture<void> have been disabled. Use
QFuture::result() or QFuture::takeResult() where you need to convert
QFuture<T> to T. Use the explicit QFuture<void>(const QFuture<T> &)
constructor to convert QFuture<T> to QFuture<void>.

Change-Id: I153d4137d36365b1611ac934fb3ac2eb667fdd6c
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
2020-10-30 17:19:26 +01:00
Topi Reinio
afa341375d Doc: Fix documentation warnings for Qt OpenGL
Task-number: QTBUG-86295
Change-Id: I4fff2d61f8f0513181150954440c9357acf73c1d
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-10-30 06:19:26 +01:00
Topi Reinio
f604fe6d1d Doc: Fix link issues for QtCore
- Fix linking to CMake manual.
- Remove references to the state machine framework.

Task-number: QTBUG-86295
Change-Id: I01a61088da8eb36760949f39be5e71d92de956f2
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
2020-10-29 18:27:21 +01:00
Mårten Nordheim
dfca01e186 Update the HTTP example
- Extended the documentation talking about it
- Initialize members in the header rather than in the ctor
- Some formatting changes
- Prefer connect-ing to QNetworkReply rather than QNAM for sslErrors
    - Because we didn't use the QNetworkReply* argument
- Put the QNetworkReply pointer in a managed pointer
- Removed the code explicitly handling a redirect (it's the new default)
- Edited HttpWindow::httpFinished so that there're less places to reset
    the reply pointer
- Updated some ifdefs I didn't update when I was revamping this example
    3 years ago

Task-number: QTBUG-87306
Change-Id: I10a6f756c09908f199ac9c61e28b49625af10105
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
2020-10-28 08:48:26 +02:00
Alexandru Croitor
638ac41293 CMake: Fix painting examples to build as standalone projects
The examples use an intermediate object library to avoid duplicate
file compilation. The examples worked when built as part of Qt
because the shared directory was always added, and Qt::OpenGL is
available implicitly.

Change each project to add_subdirectory(../shared) if the object
library is not available, thus making the examples build as standalone
projects.

Call find_package inside the shared project, to ensure the Qt packages
are found.

Create an alias called 'painting_shared::painting_shared' and link
against that to ensure that any failure is caught at configure time
rather than build time.

Adapt the pathstroke example to use the object library.

Comment out the code for the OpenGL scopes, because it's handled
by the object library.

Make sure the OpenGL dependency is public.
Make sure to run moc and compile the OpenGL specific files as well.

Task-number: QTBUG-87444
Change-Id: Ib0ecb68948581c5267ca04f19d8043fa44ff3d54
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-10-27 19:26:45 +01:00
Alexandru Croitor
397b372517 CMake: Regenerate examples to set the WIN32_EXECUTABLE property
As well as the MACOSX_BUNDLE properties as necessary.

Task-number: QTBUG-87664
Task-number: QTBUG-86827
Change-Id: I7677449a26d51fa853bd67bab6b3b61afbd2b12f
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-10-27 12:49:39 +01:00
Alexandru Croitor
2ffbac7cb2 CMake: Regenerate examples to use qt_add_executable
Task-number: QTBUG-87661
Change-Id: I0dacfdc97a3fb7d88da85b67800f2c1b084d869b
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-10-19 11:51:47 +02:00
Friedemann Kleint
d55940d7f6 Brush up the basicsortfiltermodel example
- Add a clear button to the line edit
- Indicate invalid regular expressions

Change-Id: I1dbeaa0f9168224ccb9134c0c1fe281da14dcbce
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
2020-10-14 20:35:16 +02:00
Shawn Rutledge
b0cd3bcec4 Use QScroller in the Dir View example
We have never had enough examples that show how easy it is to install
a QScroller.  In this case, one line makes a QTreeView flickable.

Pick-to: 5.15
Task-number: QTBUG-86090
Change-Id: Idb8b4709617befb261f3b78d63ddbdaf5ad18d6b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
2020-10-14 18:29:00 +00:00
Volker Hilsheimer
1c76aa077e Get rid of all usage of QApplication:desktop
Use QScreen APIs instead.

Change-Id: Ie99af94fe4292223dbb165b3f5c1b74e8fe0498b
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2020-10-14 06:38:43 +02:00
Allan Sandfeld Jensen
564b59d903 Another round of replacing 0 with nullptr
This time based on grepping to also include documentation, tests and
examples previously missed by the automatic tool.

Change-Id: Ied1703f4bcc470fbc275f759ed5b7c588a5c4e9f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2020-10-07 23:02:47 +02:00
Tor Arne Vestbø
0efe79f80d Rename the new platform APIs from QPlatformInterface to QNativeInterface
We were already using the 'native' nomenclature when referring to these
kinds of APIs, e.g. when talking about native handles, or the existing
QPlatformNativeInterface on a QPA level. Using 'native' for the user
facing APIs also distinguishes them from the 'platform' backend layer
in QPA and elsewhere.

Change-Id: I0f3273265904f0f19c0b6d62471f8820d3c3232e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-10-07 13:03:27 +02:00
Lars Knoll
fa8d021fa6 Convert a couple of APIs to use views
Try to get rid of APIs that use raw 'const {char, QChar} *, length'
pairs. Instead, use QByteArrayView or QStringView.

As QStringConverter is a new class, simply change the API to what we'd like
to have. Also adjust hidden API in QStringBuilder and friends.

Change-Id: I897d47f63a7b965f5574a1e51da64147f9e981f6
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-10-06 11:16:36 +02:00
Alexander Volkov
a51b7844ca Stylesheet example: Get rid of auto-connection slots
Change-Id: I55d89cf33e5f9c8aef3a3dfbbdcd212415d35bcb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2020-09-25 18:04:06 +03:00
Alexandru Croitor
a3bd80c08c CMake: Regenerate projects
Clean up the state of the projects,
before changing the internal CMake API function names.

Task-number: QTBUG-86815
Change-Id: I90f1b21b8ae4439a4a293872c3bb728dab44a50d
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-09-22 19:08:53 +02:00
Volker Hilsheimer
1e2325f0dc Fix some qdoc warnings: typos and qdoc syntax
Change-Id: Idf5c1490330e0f2e5d4bcf920eb03fc9993b3c8a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-09-22 06:01:02 +02:00
Volker Hilsheimer
861c4d8548 Deprecate implicit QPixmap conversion to QBitmap
It is lossy, so should be requested explicitly, using a dedicated
fromPixmap factory function.

Deprecate the constructor and assignment operator, and make the
constructor explicit.

[ChangeLog][QtGui][QBitmap] Implicitly constructing and assigning
to a QBitmap from a QPixmap has been deprecated, and the respective
constructor has been made explicit. Use the fromPixmap factory
function instead.

Change-Id: I68ce85b26c901415137b664a1db687021d48bae0
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-09-17 13:26:50 +02:00
Mitch Curtis
fb65b32d76 Add qHash implementation for QPoint
[ChangeLog][QtCore][QPoint] Added qHash() implementation.

Change-Id: I65332e7aafab53af40a6e11457b9b457196d584c
Fixes: QTBUG-86457
Reviewed-by: Thorbjørn Lindeijer <bjorn@lindeijer.nl>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-09-15 02:46:40 +02:00
Allan Sandfeld Jensen
9815ebf24b Switch QSurfaceFormat::colorSpace to a QColorSpace
Allows more flexibility in the future.

Change-Id: Idcf2d8ddaee268a7b5d55379ccb42dd9b3c33abf
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-09-15 01:41:13 +02:00
Laszlo Agocs
cc570ce2fe Fix vulkan example build with MSVC
Undeclared identifier ssize_t etc. Just use int. Not like we can have
more than a handful of physical devices anyway.

Change-Id: Ie1fb7ab9794a7d39e84db864c2be6dbdd5d97f50
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
2020-09-14 09:48:05 +02:00
Lars Knoll
652bd1efca Make QStringList an alias to QList<QString>
Fix our API, so that QStringList and QList<QString> are the
same thing.

This required a bit of refactoring in QList and moving the
indexOf(), lastIndexOf() and contains() method into
QListSpecialMethods. In addition, we need to ensure that
the QStringList(const QString&) constructor is still available
for compatibility with Qt 5.

Once those two are done, all methods in QStringList can be moved
into QListSpecialMethods<QString>.

Change-Id: Ib8afbf5b6d9df4d0d47051252233506f62335fa3
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-09-12 23:37:15 +02:00
Lars Knoll
557623cc4f Rename QLibraryInfo::location() to path()
As per ### Qt6 comment. Also rename the LibraryLocation enum
to LibraryPath.

Change-Id: I556025a19c5bcdf2ff52598eaba32269522d4128
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-09-12 23:35:56 +02:00
Volker Hilsheimer
8186bd628f Remove obsolete APIs and comments from QAbstractPrintDialog
Merging QAbstractPrintDialog with QPrintDialog, as proposed in the
removed comment, seems to have little value, given that the platform
specific implementations rely on the current abstraction.

Adjust examples and tests; with the QAbstractPrintDialog test now
testing the QPrintDialog::options API, the corresponding test function
can be removed from the QPrinter test.

Change-Id: Ia8906627898332e8590ea9b27e3d71dfcc6e8d71
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-09-10 17:29:52 +02:00
Morten Johan Sørvig
b3c991ae8f Port from devicePixelRatioF() to devicePixelRatio()
This ports all of QtBase.

Change-Id: If6712da44d7749b97b74f4614a04fac360f69d9e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-09-10 17:28:11 +02:00
Paul Wicking
95056d465e Doc: Move example file that was left behind
The qdoc-file that contains the example documentation was
left behind when the OpenGL code moved from QtGui
to QtOpenGL. This causes all the snippet commands to fail.

Task-number: QTBUG-74409
Change-Id: I86a753d4fc832965e76a085062882e6c720becd2
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
2020-09-10 11:24:18 +02:00
Lars Knoll
d49a7412f5 Derive some item delegates from QStyledItemDelegate
Address a ### Qt6 comment from change
283008e123, and start using
QStyledItemDelegate in more places, so those get proper
look and feel.

Change-Id: I39767ba99b7942faada1fba0ac241deb35563b63
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
2020-09-10 03:15:49 +02:00
Tor Arne Vestbø
89f7a2759c Deliver Quit event when calling QCoreApplication::quit()
Instead of QCoreApplication::quit() directly calling exit(0), which would
leave QGuiApplication and client code out of the loop, we now send the
Quit event, and let it pass through event delivery, before finally ending
up in QCoreApplication::event(), where we call exit(0).

This has the advantage that QGuiApplication can ensure all windows are
closed before quitting, and if any of those windows ignore the close
event the quit will be aborted. This aligns the behavior of synthetic
quits via QCoreApplication::quit() with spontaneous quits from the
platform via QGuiApplicationPrivate::processApplicationTermination.

Clients who wish to exit the application without any event delivery or
potential user interaction can call the lower level exit() function
directly.

[ChangeLog][QtGui] Application termination via qApp->quit() will now
deliver Quit events to the application, which in turn will result in
application windows being closed as part of the application quit,
with an option to cancel the application quit by ignoring the close
event. Clients who explicitly want to exit the application without
any user interaction should call QCoreApplication::exit() explicitly.

Task-number: QTBUG-45262
Task-number: QTBUG-33235
Task-number: QTBUG-72013
Task-number: QTBUG-59782
Change-Id: Id4b3907e329b9ecfd936fe9a5f8a70cb66b76bb7
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-09-07 14:41:16 +02:00
Volker Hilsheimer
00a5629d8d Remove deprecated QPrinter and QPagedPaintDevice APIs
Adjusting the QPrinter test case - some use cases no longer exist, or are
already tested in QPageSize and QPageLayout tests.

Adjust examples and manual tests.

Change-Id: I01cbc65f3d8031aea2dac86dd942126ba708b111
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2020-09-04 08:37:59 +02:00
Giuseppe D'Angelo
25351dcc54 Long live QKeyCombination!
C++20 via P1120 is deprecating arithmetic operations between
unrelated enumeration types, and GCC 10 is already complaining.
Hence, these operations might become illegal in C++23 or C++26 at
the latest.

A case of this that affects Qt is in key combinations: a
QKeySequence can be constructed by summing / ORing modifiers and a
key, for instance:

  Qt::CTRL + Qt::Key_A
  Qt::SHIFT | Qt::CTRL | Qt::Key_G (recommended, see below)

The problem is that the modifiers and the key belong to different
enumerations (and there's 2 enumerations for the modifier, and one
for the key).

To solve this: add a dedicated class to represent a combination of
keys, and operators between those enumerations to build instances
of this class.

I would've simply defined operator|, but again docs and pre-existing
code use operator+ as well, so added both to at least tackle simple
cases (modifier + key).

Multiple modifiers create a problem: operator+ between them yields
int, not the corresponding flags type (because operator+ is not
overloaded for this use case):

  Qt::CTRL + Qt::SHIFT + Qt::Key_A
  \__________________/      /
          int              /
           \______________/
                  int

Not only this loses track of the datatypes involved, but it would
also then "add" the key (with NO warnings, now its int + enum, so
it's not mixing enums!) and yielding int again.

I don't want to special-case this; the point of the class is
that int is the wrong datatype. Everything works just fine when
using operator| instead:

  Qt::CTRL | Qt::SHIFT | Qt::Key_A
  \__________________/      /
      Qt::Modifiers        /
           \______________/
            QKeyCombination

So I'm defining operator+ so that the simple cases still work,
but also deprecating it.

Port some code around Qt to the new class. In certain cases,
it's a huge win for clarity. In some others, I've just added
the necessary casts to make it still compile without warnings,
without attempting refactorings.

[ChangeLog][QtCore][QKeyCombination] New class to represent
a combination of a key and zero or more modifiers, to be used
when defining shortcuts or similar.

[ChangeLog][Potentially Source-Incompatible Changes] A keyboard
modifier (such as Qt::CTRL, Qt::AltModifier, etc.) should be
combined with a key (such as Qt::Key_A, Qt::Key_F1, etc.) by using
operator|, not operator+.  The result is now an object of type
QKeyCombination, that stores the key and the modifiers.

Change-Id: I657a3a328232f059023fff69c5031ee31cc91dd6
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2020-09-03 07:00:31 +02:00
Andreas Hartmetz
7f878c6217 Remove "fallback session management"
With the Qt6 compatibility break, it can finally be removed.
Closing windows (which might quit the application with
quitOnLastWindowClosed() true, the default) acted contrary to the
documentation of the commitDataRequest() signal, which could have
been a hint.

This removes the workaround API from the fix for QTBUG-49667 and
also removes the problematic feature that it worked around.

Change-Id: I672be58864ef062df7fb7f2a81658b92c4feedd2
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-09-01 10:16:15 +02:00
Tor Arne Vestbø
90358f6042 Deprecate and remove uses of AA_DisableHighDpiScaling
Change-Id: Ibadce68775858c524b998aacad310905ba2c2e8e
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2020-08-31 19:14:55 +02:00
Tor Arne Vestbø
dce106c77c High-DPI: Remove usage of Qt::AA_EnableHighDpiScaling
This attribute is now on by default.

Change-Id: I7c9d2e3445d204d3450758673048d514bc9c850c
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-08-28 20:08:43 +02:00