Since 5.9 flush()
Since 5.6 notifyInternal()
Since 5.0 trUtf8()
Change-Id: I1cc0fc5ebc3d7f2f4809c4494ab2a7486a481b10
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
isNull() would forward to the contained type and check that type's
isNull() method for some of the builtin types. Remove that behavior
and only return true in isNull(), if the variant is invalid, doesn't
contain data or contains a null pointer.
In addition, implement more consistent behavior when constructing
a QVariant using the internal API taking a copy from a void *.
isNull() should return true in both cases. This mainly changes behavior
for some corner cases and when using our internal API.
[ChangeLog][Important Behavior Changes] QVariant::isNull()
no longer returns true when the variant contains an object of some
type with an isNull() method, that returns true for the object;
QVariant::isNull() now only returns true when the variant contains
no object or a null pointer.
Change-Id: I3125041c4f8f8618a04aa375aa0a56b19c02dcf5
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Comparing two variants will not try to convert the types
of the variant anymore. Exceptions are when both types are
numeric types or one type is numeric and the other one a
QString. The exceptions are there to keep compatibility with
C++ and to not completely break QSettings (which needs automatic
conversions from QString to numeric types).
[ChangeLog][Important Behavior Changes] Comparing two
variants in Qt 6 will not try attempt any type conversions before
comparing the variants anymore. Instead variants of different type
will not compare equal, with two exceptions: If both types are numeric
types they will get compared according to C++ type promotion rules. If
one type is a QString and the other type a numeric type, a conversion
from the string to the numeric tpye will be attempted.
Fixes: QTBUG-84636
Change-Id: I0cdd0b7259a525a41679fb6761f1e37e1d5b257f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Remove the compare method in the QVariant::Handler struct. Rely
on the generic support provided by QMetaType instead.
[ChangeLog][Important Behavior Changes][QVariant] QVariant will now use builtin support in
QMetaType to compare its content. This implies a behavioral change
for some graphical types like QPixmap, QImage and QIcon that will
never compare equal in Qt 6 (as they do not have a comparison
operator).
Change-Id: I30a6e7116c89124d11ed9052537cecc23f78116e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
For long double: they're just missing, so add them for completeness.
For integral types: follow the advice of C11's trigonometric
functions; first convert the angle to double, then do the actual
conversion. This is offered only for the degree->radians conversions,
as someone may legitimately want to call e.g. qDegreesToRadians(90).
On the other hand, it seems extremely unlikely that someone may
want to do a radians->degree conversion starting from integral
datatypes, so I'm not adding it for the moment being (instead,
I'm leaving a note).
[ChangeLog][QtCore][QtMath] qDegreesToRadians now also accepts
long double and integral types. A value of integral type will be
casted to double before the conversion to radians.
[ChangeLog][QtCore][QtMath] qRadiansToDegrees now also accepts
long double.
Change-Id: Ib1576be5193ae09bb6cb4a70d7a31702955df2c5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
... and QMultiMap as std::multimap.
Just use the implementation from the STL; we can't really claim that
our code is much better than STL's, or does things any differently
(de facto they're both red-black trees).
Decouple QMultiMap from QMap, by making it NOT inherit from
QMap any longer. This completes the deprecation started in 5.15:
QMap now does not store duplicated keys any more.
Something to establish is where to put the
QExplictlySharedDataPointer replcement that is in there as an
ad-hoc solution. There's a number of patches in-flight by Marc
that try to introduce the same (or very similar) functionality.
Miscellanea changes to the Q(Multi)Map code itself:
* consistently use size_type instead of int;
* pass iterators by value;
* drop QT_STRICT_ITERATORS;
* iterators implictly convert to const_iterators, and APIs
take const_iterators;
* iterators are just bidirectional and not random access;
* added noexcept where it makes sense;
* "inline" dropped (churn);
* qMapLessThanKey dropped (undocumented, 0 hits in Qt, 1 hit in KDE);
* operator== on Q(Multi)Map requires operator== on the key type
(we're checking for equality, not equivalence!).
Very few breakages occur in qtbase.
[ChangeLog][Potentially Source-Incompatible Changes] QMap does not
support multiple equivalent keys any more. Any related functionality
has been removed from QMap, following the deprecation that happened
in Qt 5.15. Use QMultiMap for this use case.
[ChangeLog][Potentially Source-Incompatible Changes] QMap and
QMultiMap iterators random-access API have been removed. Note that
the iterators have always been just bidirectional; moving
an iterator by N positions can still be achieved using std::next
or std::advance, at the same cost as before (O(N)).
[ChangeLog][Potentially Source-Incompatible Changes] QMultiMap does
not inherit from QMap any more. Amongst other things, this means
that iterators on a QMultiMap now belong to the QMultiMap class
(and not to the QMap class); new Java iterators have been added.
Change-Id: I5a0fe9b020f92c21b37065a1defff783b5d2b7a9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
We can end up in a situation where a (soon to be destroyed) observer is
owned by a binding which is about to be deleted. If in that situation
the binding is destroyed first, we end up with a dangling pointer
and ensuing memory corruption. Instead, we now first transfer the
ownership of the observer and only destroy the binding afterwards.
Fixes: QTBUG-85824
Change-Id: I721c0319281ada981ae7896bd2e02e9a0cc901b8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Commit daaa557259 changed the enum to
bool, but the warning is still happening.
Pick-To: 5.15
Change-Id: Ibdc95e9af7bd456a94ecfffd1603f332a356c788
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We already have the information in the QMetaTypeInterface, and provide
functions to access sizeof. Adding alignof support seems natural, and
should make it easier to handle over-aligned types.
This should also be helpful in QVariant.
Change-Id: I166be76f4b7d2d2e524a3a1e513bd2f361e887c1
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The previous implementation multiplexed callback-based event
notification into a single proxy event (cf. 85403d0af), which was
in turn object-waited for (this was the case since the beginning
of public qt history). It makes more sense to multiplex into a
posted message, because that also works with foreign event loops
that do not know anything about our event objects.
Task-number: QTBUG-64443
Change-Id: I97945ac8b5d7c8582701077134c0aef4f3b5a18f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
We already manage to compile without this code, and none of it are full
classes or separate functions suitable for qt5compat.
Change-Id: I47facac7ec621cfc4b0b26214b7de37897443519
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
When the compile time metatype support for methods was introduced, we
needed to allow incomplete types to avoid breaking a large amount of
code. However, this mistakenly enabled using incomplete types for
properties, too. In contrast to methods, properties lack the fallback
code to retrieve the metatype at runtime. Thus, this commit restores the
completeness requirement for properties again. This is done by always
calling QMetaTypeForType for properties in qTryMetaTypeForType.
Amends fa987d4441
Change-Id: I5f66ff289631c056eecebe40926bf321d283eea7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The comment claims it is needed for "the deprecated
QHash::iterator::operator--()", which has been removed already.
Change-Id: I90f5abdcd14e6cac4ed7144e96eb26bf34477391
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
src/corelib/text/qstringconverter.h:160:54: error: no matching constructor for initialization of 'QStringConverterBase::State'
src/corelib/text/qstringconverter.h:72:19: note: candidate constructor not viable: no known conversion from 'QFlags<QStringConverter::Flag>' to 'QFlags<QStringConverterBase::Flag>' for 1st argument
src/corelib/text/qstringconverter.h:75:9: note: candidate constructor not viable: no known conversion from 'QStringConverter::Flags' (aka 'QFlags<QStringConverter::Flag>') to 'QStringConverterBase::State' for 1st argument
src/corelib/text/qstringconverter.h:108:24: note: candidate constructor not viable: no known conversion from 'QStringConverter::Flags' (aka 'QFlags<QStringConverter::Flag>') to 'const QStringConverterBase::State' for 1st argument
src/corelib/text/qstringconverter.h:159:32: warning: constexpr constructor that does not initialize all members is a C++20 extension [-Wc++20-extensions]
src/corelib/text/qstringconverter.h:187:11: note: member not initialized by constructor
src/corelib/kernel/qproperty.h:403:14: error: deduction guide must be declared in the same scope as template 'QProperty'
src/corelib/kernel/qproperty.h:202:7: note: template is declared here
src/corelib/kernel/qproperty.h:403:14: error: deduction guide declaration without trailing return type
src/gui/painting/qregion.h:139:5: error: unknown type name 'HRGN'
src/gui/painting/qregion.h:140:29: error: unknown type name 'HRGN'
Change-Id: I3c195a60ceeb51664368a4aeef90c70c31954fc3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Since 5.0, registerTimer() without a timer type; and filterEvent(void *)
Change-Id: Id50c2daaf7b144ec403351d0fc50111272b34521
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
kernel\qmetaobjectbuilder.cpp(1279): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
kernel\qmetaobjectbuilder.cpp(1432): warning C4267: '+=': conversion from 'size_t' to 'int', possible loss of data
sax\qxml.cpp(1275): warning C4267: 'argument': conversion from 'size_t' to 'int', possible loss of data
text\qfontsubset.cpp(920): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
text\qfontsubset.cpp(920): warning C4267: 'initializing': conversion from 'size_t' to 'const int', possible loss of data
text\qtextengine.cpp(2664): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
text\qtextengine.cpp(2665): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
text\qtextengine.cpp(2706): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
text\qtextengine.cpp(2707): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
itemviews\qbsptree.cpp(60): warning C4334: '<<': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
kernel\qprintengine_win.cpp(1558): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
qsql_odbc.cpp(804): warning C4267: 'argument': conversion from 'size_t' to 'SQLINTEGER', possible loss of data
qsql_odbc.cpp(822): warning C4267: 'argument': conversion from 'size_t' to 'SQLINTEGER', possible loss of data
qsql_odbc.cpp(1585): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
qsql_odbc.cpp(1602): warning C4267: 'argument': conversion from 'size_t' to 'int', possible loss of data
qwindowsmime.cpp(770): warning C4267: '+=': conversion from 'size_t' to 'int', possible loss of data
windows\qwindowsmime.cpp(770): warning C4267: '+=': conversion from 'size_t' to 'int', possible loss of data
Change-Id: I04fbe17b9782f4c2704933fc005449b1e992475e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Up to (including) C++11, integral bitfields of unspecified signedness have
implementation dependent signedness.
Detected by LGTM.com static analyzer.
Pick-to: 5.15
Change-Id: Ibaa0fdc6e443495a3cd40330c4573c9cc6ccdf5b
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
For types that don't have an operator==(), always trigger the binding
and the changed notification.
Task-number: QTBUG-85578
Change-Id: I41374f6d13c88106f4de83864e82172f3a248150
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Given we optimize for the case where the new value is of the
same type of the one already stored in the variant, enable move
assignment for that case.
As a drive-by, avoid a path to detach() for data() if we know
we're detached.
Change-Id: I9abbdc10637ce77ebb747b49d83e1ef914d997bb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
And mark some methods as inline.
Performance is critical for our new property system. Compiling
it in one unit makes it possible for the compiler to do a much
better job at inlining and generating optimized code.
Improves performance of binding evaluations by another 20%.
Change-Id: I5a2aa93c74d2b68418b0a9d2e34d8199bb71e3ad
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
We have the space anyway, and this cuts away another couple
of percent during binding evaluation to avoid a call that
checks whether the type is bool.
Change-Id: I41c320f93bf0a33f0cb15962a154c59a2e47fd7a
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Avoid any QVariant or type dependent code in the cpp files.
Instead, let the binding wrapper determine if the value
has changed and return true/false accordingly.
This required also some reworking of the guard mechanism
for notified properties, where the guard function wrapper
now calls first the binding evaluation function and then
passes the result to the guard.
Change-Id: I350d07a508ccc0c5db7054a0efa4f270b6a78ec3
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
There's no point in returning a usually empty error when
evaluating bindings, adding overhead to the regular code
path.
Instead, the error can be set on the currently evaluating
binding if required. This streamlines the functor used to
wrap the binding and should thus expand to less code and
execute faster in the regular case.
To achieve this, expose a pointer to the currently evaluating
binding in the private API (as QtQml needs it to be able to
report errors).
The error case now requires one additional TLS lookup, but
we don't really care about performance in that case anyway.
Change-Id: Iecb450e765244930a41d813fcf8eb4013957a6a3
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Remove location(). The method would always return an empty value. If you need the location,
the binding itself has it.
Remove setDescription() and require that the description gets passed
in the constructor. Never create a d pointer if type is NoError, so we
can quickly check for it inline.
Change-Id: I7eb8a94786281069d6ea2d82567c09aa50c52ef6
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
This removes the fully manual registration of comparison operators in
QMetaType and replaces it with an automatic registration through
Q_DECLARE_METATYPE().
[ChangeLog][QMetaType] The QMetaType::registerComparator() and
QMetaType::registerEqualsComparator() have been removed.
Q_DECLARE_METATYPE() now automatically registers any
operator==() and/or operator<() for a type visible where
it is used on that type, as part of declaring its meta-type.
Change-Id: I3df451b652b735c093533838bf32f3cc785439f8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Store a pointer to the TLS in the BingingEvaluationState. Like this,
we can save us one TLS lookup in the destructor. Shaves off a couple
of percent during binding evaluation.
Change-Id: Idc9dc5b0ea202aaeb68cdc063700b8e4968753dc
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This allows larger than 2G memory segments to be allocated.
Fixes: QTBUG-76995
Change-Id: I95309eeea511fadb28724c7592298c2fcc6f1d1a
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Improves performance of binding evaluation by ~20% for
simple C++ bindings by simplifying and inlining the code
that clears the array of property observers.
Change-Id: I829ac1895f1673367d737944d950360015a5b435
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This is required to remove the ; from the macro with Qt 6.
Task-number: QTBUG-82978
Change-Id: I3f0b6717956ca8fa486bed9817b89dfa19f5e0e1
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
The change creates a slight source incompatibility. The main
things to take care of are
* code using printf statements on list.size(). Using qsizetype in
printf statements will always require a cast to work on both 32
and 64 bit.
* A few places where overloads now get ambiguous. One example is
QRandomGenerator::bounded() that has overloads for int, uint and
double, but not int64.
* Streaming list.size() to a QDataStream will change the format
depending on the architecture.
[ChangeLog][QtCore][QList] QList now uses qsizetype to index into
elements.
Change-Id: Iaff562a4d072b97f458417b670f95971bd47cbc6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The iterators are quite heavy objects (>100bytes), don't pass them
by value.
Change-Id: I4c9d1f64d14419a35bd067884d7e8bca2589f9b9
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
There's a bunch of similar and overlapping logic in QCocoaKeyMapper
already. Moving it to the same place allows us to easier find ways
to reduce the overlap.
None of the exported functions were used outside of the plugin.
Change-Id: I6953690cdfda5ee8265b33ccbf919184c3a1700f
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
The API is available by including qopenglcontext.h as usual,
but scoped in the QPlatformInterface namespace. The namespace
exposes platform specific type-safe interfaces that provide:
a) Factory functions for adopting native contexts, e.g.
QCocoaGLContext::fromNative(nsContext, shareContext);
b) Access to underlying native handles, e.g.
openGLContext->platformInterface<QCocoaGLContext>->nativeContext()
c) Platform specific functionality, e.g.
static QWGLContext::openGLModuleHandle()
openGLContext->platformInterface<QEGLContext>->doSomething();
The platform interfaces live close to the classes they extend,
removing the need for complex indirection and plumbing, and
avoids kitchen-sink modules and APIs such as the extras modules,
QPlatformFunctions, or QPlatformNativeInterface.
In the case of QOpenGLContext these platform APIs are backed
by the platform plugin, so dynamic_cast is used to ensure the
platform plugin supports the requested interface, but this is
and implementation detail. The interface APIs are agnostic
to where the implementation lives, while still being available
to the user as part of the APIs they extend/augment.
The documentation will be restored when the dust settles.
Task-number: QTBUG-80233
Change-Id: Iac612403383991c4b24064332542a6e4bcbb3293
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Omitting state machine and docs for now.
Task-number: QTBUG-84469
Change-Id: Ibfa5e7035515773461f6cdbff35299315ef65737
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Applied to headers only. Source file to be changed separately.
Omitted statemachine for now to avoid conflicts.
Omitted qmetatype.h for now - to be handled later.
Task-number: QTBUG-84469
Change-Id: I317376037a62467c313467d92955ad0b7473aa97
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
This addresses two issues:
1. The generated code for QNotifiedProperty<T, ...> was broken when T is
a pointer. Notably, const S* & is not a constant reference to S*.
This is addressed by consistently using T const& instead of const T&.
2. The Q_PRIVATE_QPROPERTY approach assumed that the property name and
the getter are equal. This does break when they are not, and we are
unable to change either of them due to API compatibility concerns. An
example of this would be QQuickItem's parent property with a
parentItem getter. Therefore, we now allow the usage of NAME to
override the name of the property.
Change-Id: Idf2e85576c74371b5b0f6db15dbe6f2d17c5e33d
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Adding support for a static notifier within QProperty itself - through a
QProperty "sister" class - is more efficient in terms of memory
consumption and run-time performance.
The MemberChangeHandler permanently takes up at least three pointers,
while the notified properties only cost one pointer in the binding.
Change-Id: Ia1a8c2b66f1f3c2fe13ae0ad9f12cdb6bdcc35ef
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
A guard callback is a predicate which takes the new value set by
setValue or computed as the result of a binding expression. If it
returns false, the value is discarded and the old value is kept.
Note that due to lazyness, when setting a binding, we still notify
everyone as the binding is only evaluated on demand, and the guard can
thus only run when someone actually queries the value.
Note further that a guard is allowed to modify the value that is passed
to it (e.g. to clamp it to a certain range).
Task-number: QTBUG-85032
Change-Id: I3551e4357fe5780fb75da80bf8be208ec152dc2a
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Check at compile time whether the static callback takes an argument
(which has to be of the same time as the type of the property). If so,
retrieve the old value and pass it to the callback.
Change-Id: Ib1c4c9e05b826b6be492b03f66fa72ad015963ee
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Edward Welbourne
Lars Knoll
Giuseppe D'Angelo
Tor Arne Vestbø
Fabian Kosmale
Thiago Macieira
Allan Sandfeld Jensen
Alex Trotsenko
Friedemann Kleint
Dimitrios Apostolou
Volker Hilsheimer
Jarek Kobus
Lars Schmertmann
Simon Hausmann