| Commit message (Collapse) | Author | Age | Files | Lines |
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It was already used many places directly making the code inconsistent.
Change-Id: I3b14bc6c333640fb3ba33c71eba97e78c973e44b
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Omitting stationary points from touch events is such a marginal
optimization that this code probably isn't worth maintaining.
It wasn't implemented correctly this time either, according to the
tst_QQuickMultiPointTouchArea::stationaryTouchWithChangingPressure()
test.
[ChangeLog][QtGui][QPointerEvent] We no longer attempt to avoid
delivery of stationary points within QTouchEvent: every pressed point
is now included in every TouchUpdate event.
Task-number: QTBUG-77142
Change-Id: If1fd666fb3057a17e0dffdd7ca7138693126b02b
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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Change-Id: I5d37f620caccbd1445c99a602b71779bdedd37d3
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
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... by using QRectF::toAlignedRect().
Change-Id: I310b2f0ad87c541aa0d63d6a8061783aff791abb
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
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As drive-by, fix qdoc warning in related internal documentation.
Change-Id: I7716a9b126e38e99dcd11c6af2e91b8ec7bf4346
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Change-Id: Idf5c1490330e0f2e5d4bcf920eb03fc9993b3c8a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Do not use QVariant::Type anymore, instead use QMetaType
For some reason, this pushed the qvariant autotest over the limit where
MSVC requires the /bigobj flag, so add that one.
[ChangeLog][QtCore][QMimeData] The signature of the virtual retrieveData()
function has changed and now takes a QMetaType instead of a QVariant::Type.
Change-Id: Ib46773bd731ee2177b1ef74d8162d744be7017ef
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
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Qt Quick Pointer Handlers depend on this behavior:
QQuickPointerHandler::onGrabChanged() receives only the grabber that
was losing the grab or the one that is receiving it, not both at the
same time. UngrabExclusive means the original grabber simply
relinquished the grab by setting the exclusive grabber to null.
CancelGrabExclusive means the new grabber took over the grab that the
old grabber had before.
Task-number: QTBUG-86729
Change-Id: Iefca6fe91b11fcb03d2c6ac3598841c924facb22
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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After we started defaulting to high-dpi enabled, it was discovered
that it does not work correctly with the placeholder screen. Since
the placeholder screen has no physical size, and the default
implementation of logicalDpi() divides by the physical size, we
got a scale factor of NaN in the high-dpi code.
The effect of this was that the nooutput test in Qt Wayland would
fail, because it did not get the events it was expecting, since
the window geometry was never set to a valid rect in the
resize() call.
Task-number: QTBUG-86698
Change-Id: I7ee68db9a13446b414502ae0f26fd214531c673a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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These states correspond well with ScrollPhase, and this abstraction
makes it possible to handle wheel events the same way as mouse events
in Qt Quick: on "begin" we deliver to all Items and Handlers until
all points (the only point) are accepted; on "update" and "end" we
deliver only to the exclusive grabber, if there is one, and to any
passive grabbers.
Change-Id: I702dbd4f2c1bf5962eb3dbb9e4b725300a00a887
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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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>
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...not with the given point. Since QEventPoint has a constructor that
takes an id, it's possible to write something like
pointerEvent->setExclusiveGrabber(pointId, object)
which will construct a QEventPoint on-the-fly, containing only an id.
(That was unintentional, but perhaps useful sometimes.)
setExclusiveGrabber() looks up the persistent point, but if we emit the
signal with the given point, it is missing the device. A handler
connected to that signal might reasonably assume that the point is a
complete instance; so we'd better emit the complete instance that we
found. (OTOH if the given point was a detached instance, it might also
be unexpected that the signal emits the persistent instance instead of
the given instance.) Amends 2692237bb1b0c0f50b7cc5d920eb8ab065063d47
Change-Id: Iee16363dcb22c1dc07b0cc0a81930218e22fa19e
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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Change-Id: I87a874477b89eb3f5951930f03e305d896a24c2e
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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In 4e400369c08db251cd489fec1229398c224d02b4 we began to send synth-mouse
events from the touch device, but in the opposite direction it was not
consistent.
Add autotests to prove that it's consistent both ways now.
Change-Id: I7df2328fef224dc1529ca5d27411cd8a5a9c8df9
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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This functionality was only in Qt Quick in Qt 5. Now we move it up to QtGui
so that every QEventPoint will have a valid velocity() before being delivered
anywhere.
[ChangeLog][QtGui][QPointerEvent] Every QEventPoint should now carry a valid
velocity(): if the operating system doesn't provide it, Qt will calculate it,
using a simple Kalman filter to provide a weighted average over time.
Fixes: QTBUG-33891
Change-Id: I40352f717f0ad6edd87cf71ef55e955a591eeea1
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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QQuickEventPoint instances were very long-lived and got reused from one
event to the next. That was initially done because they were "heavy"
QObjects; but it also became useful to store state in them between
events. But this is in conflict with the ubiquitous event replay
code that assumes it's OK to hold an event instance (especially
a QMouseEvent) for any length of time, and then send it to some widget,
item or window. Clearly QEventPoints must be stored in the QPointerEvent,
if we are to avoid the need for workarounds to keep such old code working.
And now they have d-pointers, so copying is cheap. But replay code
will need to detach() their QEventPoints now.
QEventPoint is useful as an object to hold state, but we now store
the truly persistent state separately in an EventPointData struct,
in QPointingDevicePrivate::activePoints. Incoming events merely
update the persistent points, then we deliver those instead.
Thus when event handler code modifies state, it will be remembered
even when the delivery is done and the QPA event is destroyed.
This gets us a step closer to supporting multiple simultaneous mice.
Within pointer events, the points are moved up to QPointerEvent itself:
QList<QEventPoint> m_points;
This means pointCount(), point(int i) and points() can be non-virtual.
However in any QSinglePointEvent, the list only contains one point.
We hope that pessimization is worthwhile for the sake of removing
virtual functions, simplifying code in event classes themselves, and
enabling the use of the range-for loop over points() with any kind of
QPointerEvent, not just QTouchEvent. points() is a nicer API for the
sake of range-for looping; but point() is more suited to being
non-const.
In QML it's expected to be OK to emit a signal with a QPointerEvent
by value: that will involve copying the event. But QEventPoint
instances are explicitly shared, so calling setAccepted() modifies
the instance in activePoints (EventPointData.eventPoint.d->accept);
and the grabbers are stored separately and thus preserved between events.
In code such as MouseArea { onPressed: mouse.accepted = false }
we can either continue to emit the QQuickMouseEvent wrapper
or perhaps QEvent::setAccepted() could become virtual and set
the eventpoint's accepted flag instead, so that it will survive
after the event copy that QML sees is discarded.
The grabChanged() signal is useful to keep QQuickWindow informed
when items or handlers change exclusive or passive grabbers.
When a release happens at a different location than the last move event,
Qt synthesizes an additional move. But it would be "boring" if
QEventPoint::lastXPosition() accessors in any released eventpoint always
returned the same as the current QEventPoint::xPosition()s just because
of that; and it would mean that the velocity() must always be zero on
release, which would make it hard to use the final velocity to drive an
animation. So now we expect the lastPositions to be different than
current positions in a released eventpoint.
De-inline some functions whose implementations might be subject to
change later on. Improve documentation.
Since we have an accessor for pressTimestamp(), we might as well add one for
timestamp() too. That way users get enough information to calculate
instantaneous velocity, since the plan is for velocity() to be somewhat
smoothed.
Change-Id: I2733d847139a1b1bea33c00275459dcd2a145ffc
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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Allows more flexibility in the future.
Change-Id: Idcf2d8ddaee268a7b5d55379ccb42dd9b3c33abf
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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They are redundant, not in use, and got added without implementation in
a81859a3c8d0f8b4367fc63988e1d653d34ed48a.
Change-Id: Ifed1fbf97a8158c2801df09dac47bf1fc90795d4
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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If we have a platform plugin we ask the platform to quit, and if
not we fall back to the base implementation of QCoreApplication
that sends Quit events directly.
This allows the platform to involve the rest of the system in the
process. The platform will then come back with a spontaneous quit
via QWSI::handleApplicationTermination(), which will then send
the corresponding Quit even from QGuiApplication like normal.
Task-number: QTBUG-45262
Task-number: QTBUG-33235
Task-number: QTBUG-72013
Task-number: QTBUG-59782
Change-Id: I0000aaf7192e4b905933c5da0e53901c6c88f26a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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* Document the new base classes QPointerEvent and QSinglePointEvent,
and move relevant documentation to be located under them.
* Replace linking to deprecated functions with their new counterparts.
* Remove non-existent function and parameter documentation.
* Document QEventPoint::State enum.
* Prefer \obsolete over \deprecated and fix the usage.
* Document the Capabilities enum in the correct location and
add docs for the missing enum values.
Change-Id: Ic8f2732f2e90ecbf522cd744c601cedcc574825c
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
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We plan to move storage of the grabbers into QPointingDevice so that
QEventPoint will store only data that does not need to persist between
deliveries of individual events. These API changes prepare for that.
addPassiveGrabber/removePassiveGrabber is a better API than
setPassiveGrabbers(), because it will never require constructing a
temporary QList just to call the function. Eventually we need to emit
signals to notify about grab changes, so it's better to have incremental
changes to the list rather than needing to iterate and find differences.
Fix up the docs.
QEventPoint IDs are no longer written in hex in debug output.
That was done in Qt 5 because an ID was a composite of device ID
with the OS-provided touchpoint ID; but since the QPointingDevice
is always available, it's more readable if the IDs are in decimal.
Change-Id: I86b9016d9b28c331ca05c7c108d9788de93fb642
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Gives it its own changed signal, and simplifies setting from group,
while fixing an inconsistency in propagation.
Change-Id: I22b243210260a8878144fa4b60204df46f847f37
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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I still have doubts that QEventPoint can't be made small enough that
copying would be cheaper than reference-counting and all the indirections
in now-noninline accessors, but this gives us the usual freedom to
change the data members later on.
Change-Id: I792f7fc85ac3a9538589da9d7618b647edf0e70c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Because we removed public setters from QTouchEvent and QEventPoint in
4e400369c08db251cd489fec1229398c224d02b4 and now it's proposed to give
QEventPoint a d-pointer again, the implementation of QTouchEventSequence
needs to start using QMutableEventPoint: being a friend will no longer
be enough, because the member variables won't be accessible in the future.
But because we have separate test libs for Gui and Widgets, it needs to
be further refactored into two classes.
Change-Id: I0bfc0978fc4187348ac872e1330d95259d557b69
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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Change-Id: I8dacdaa18cea967a85e8835c2440ba53ee5df2e1
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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They are unused.
Change-Id: I77383f2be45551401ed9c2f88285511134cc8b0d
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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... and the equivalent enum in QPlatformDialogHelper.
No need to keep numerical values the same anymore.
Remove ### Qt 6 comment.
Change-Id: Ib369ea6ca2362f6ab0f71a3a6c90c4adaa7f11cd
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Broken since 37d5aaa4b42f9c837f0d27edb9da2185971d02be
Change-Id: Id741f23ccae4f619e6a389ee71b3e7fe0c599989
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
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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>
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QT_DEVICE_PIXEL_RATIO is replaced by QT_SCALE_FACTOR, while
QT_AUTO_SCREEN_SCALE_FACTOR is replaced by QT_ENABLE_HIGHDPI_SCALING.
Since High-DPI is now always enabled, there's no reason to keep the
code path for android.app.auto_screen_scale_factor. Also, based on
the original commit message that introduced this code, the value of
the property should have been true.
Change-Id: Ib34b1deeab46c488c67c4d64f087599b4a54dc55
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
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As the private headers are not included by default in the precompiled
header QDoc builds for QtGui, create a custom module header for
the documentation build and pull in the required headers.
Add dummy declarations for Windows-specific types for building docs
on non-Windows platforms.
Task-number: QTBUG-83252
Change-Id: I225ed08f68cf4f7c1f1d093424070b13ce36aa51
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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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>
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droparea.h has been removed. Remove all code that depends on that header
except the one snippet that is still used. Add minimal code to allow
the snippet to be compiled.
Done-with: Nico Vertriest <nico.vertriest@qt.io>
Task-number: QTBUG-81486
Change-Id: I58c80d3527c82389ccff97567f4c75c33aec0f5e
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
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Change-Id: Ibadce68775858c524b998aacad310905ba2c2e8e
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
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Change-Id: If85231373bc0ec9a9259f628cd0c62a3a75b813b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
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Change-Id: I66eb05ae7ed58ff3375b756c29a96d5067251cc3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
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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>
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Set HighDpiScaleFactorRoundingPolicy to PassThough
by default. This makes Qt track the system UI setting
accurately, and is overall the least confusing option.
Historically, Qt has rounded the scale factor (for example,
Windows 175% -> DPR 2) due to faulty handling of fractional
scale factors in Qt Widgets and with the native Windows
style.
Other areas of Qt such as Qt Quick have had few issues
with fractional scale factors and support this well.
Qt has never rounded the scale factor on the Android
platform.
Support for fractional scale factors in Qt Widgets and
the windows style has improved, which makes changing
the default for Qt 6 viable.
Task-number: QTBUG-83068
Change-Id: I38b60f621f95be8ebb6cb84a07d3370fec19ab92
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Enable high-DPI support for all platforms which use
QHighDpiScaling. This changes the default behavior
of Qt applications on X11, Windows, and Android.
Qt::AA_EnableHighDpiScaling is now effectively on by
default, and Qt 6 applications do not have to set
this application attribute. Opting out is possible by
setting the Qt::AA_DisableHighDpiScaling attribute.
Task-number: QTBUG-83068
Change-Id: Ia2bd3e6f490130afcacd3a951bc50dbb40a79d7f
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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* Drop deprecation warnings for now-dropped items
* Use the 'qt6' define and a new \nothing doc macro to conditionally
document items on Qt 6
* Add a custom module header for docs that pulls in also Vulkan headers
* Add \internal command for internal classes/functions
* Move QtGUI-related code snippets from widgets to gui docs
Change-Id: Ieb386b96631a49568d09059906d307c45c01d93a
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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This follows the work done in 6ff79478a44fce12ca18832a56db4a370a9ff417.
The API is available by including qoffscreensurface.h, scoped in
the QPlatformInterface namespace. The namespace
exposes platform specific type-safe interfaces that provide:
a) Factory functions for adopting native contexts, e.g.
QAndroidPlatformOffscreenSurface::fromNative(ANativeWindow);
b) Access to underlying native handles, e.g.
surface->platformInterface<QAndroidPlatformOffscreenSurface>()
->nativeSurface()
Fixes: QTBUG-85874
Change-Id: I29c459866e0355a52320d5d473e8b147e050acb3
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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With 64bits, the mask is exhausted with the 21 colors x 3 color groups
we have right now.
In order to support accent colors, we need more palette entries. By
moving the mask into the d-pointer, we can extend QPalette within
the Qt 6 series, without breaking binary compatibility.
The resolveMask/setResolveMask methods that take integers are
documented as internals, so we can change those signatures after
Qt 6.0 as well.
As a side effect, setting the resolve mask on a QPalette detaches now.
Setting a mask is in most cases done on the result of
QPalette::resolve, which is usually detached already. And the QPalette
default constructor will have to detach from the global application
palette if that palette has any colors set explicitly.
Task-number: QTBUG-82925
Change-Id: I1e70f1c4d0dd98303e353b91df5dba2b1fe8ba01
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Address ### Qt 6 comment
Change-Id: I4ca9085266f9008b769bb164e6169439adadb12f
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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The explicit paint event on QtGui and QPA level allows us to untangle
the expose event, which today has at least 3 different meanings.
It also allows us to follow the platform more closely in its semantics
of when painting can happen. On some platforms a paint can come in
before a window is exposed, e.g. to prepare the first frame. On others
a paint can come in after a window has been de-exposed, to save a
snapshot of the window for use in an application switcher or similar.
The expose keeps its semantics of being a barrier signaling that the
application can now render at will, for example in a threaded render
loop.
There are two compatibility code paths in this patch:
1. For platform plugins that do not yet report the PaintEvents
capability, QtGui will synthesize paint events on the platform's
behalf, based on the existing expose events coming from the platform.
2. For applications that do not yet implement paintEvent, QtGui will
send expose events instead, ensuring the same behavior as before.
For now none of the platform plugins deliver paint events natively,
so the first compatibility code path is always active.
Task-numnber: QTBUG-82676
Change-Id: I0fbe0d4cf451d6a1f07f5eab8d376a6c8a53ce8c
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
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Change-Id: I221586a4fac394a9110d28905a898ab9688c1183
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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This is a z coordinate unrelated to tilt, AFAIK.
Amends ea2ae140e99bbd21515a99c5480e53129ef843c3
Change-Id: If165df3af290fbe7c2e5bfa94d578175debd53cd
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Having three methods with the same name doing different things is
unnecessarily confusing, so follow the standard naming convention in
Qt and call the getter of the resolve mask resolveMask, and the setter
setResolveMask. These methods were all documented as internal.
The publicly documented resolve() method that merges two fonts and
palettes based on the respective masks remains as it is, even though
'merge' would perhaps be a better name.
Change-Id: If90b1ad800834baccd1dbc38fc6b861540d6df6e
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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This makes high-level event dispatching easier: for example in Qt Quick,
all pointer events should eventually be delivered to items in a similar way.
Implemented in a similar way as d1111632e29124531d5b4512e0492314caaae396.
Change-Id: I2f0c4914bab228162f3b932dda8a88051ec2a4d7
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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Task-number: QTBUG-80316
Change-Id: I2ee74110fd55e94d86321d3b3dc5bb8297424ed4
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
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event()->device() was the most common use case anyway.
The idea that the "parent" of a QEventPoint is the QPointerEvent
interferes with the ability to copy and move event objects: the parent
pointers are dangling unless we use the QPointerEvent subclass
destructors to set the points' parents to null. Since there is no move
constructor, even returning a QEventPoint from a function by value
results in destroying the temporary instance and copying it to the
caller's space. So the parent pointer is often useless, unless we do
even more work to maintain it when the event moves.
If we optimize to avoid copying QEventPoints too much (and perhaps
enable exposing _mutable_ points to QML) by storing reusable instances in
QPointingDevice (which is the current plan), then the actual parent will
no longer be the event. Events are usually stack-allocated, thus
temporary and intended to be movable.
Change-Id: I24b648dcc046fc79d2401c781f1fda6cb00f47b0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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