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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
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- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3
- Removed LICENSE.GPL
Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
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Change-Id: I7a4dd22ea3bcebf4c3ec3ad731628fd8f3c247e0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Our previous event loop integration had two unfortunate flaws:
1. We would call qt_user_main() from a timer, after returning from
didFinishLaunchingWithOptions. This had the effect of showing the
iOS application window long before the Qt application UI had been
set up, resulting in a 1-2 second flash of black/pink between the
launch image disappearing and the actual application showing.
2. We spun a nested event loop, where our implementation of the
different event loop modes did not perfectly match the Apple
implementation. This resulted in scrolling being busted in
some cases such as when showing the virtual keyboard for
Emoji characters.
These two issues have now been solved by calling the user's main()
from didFinishLaunchingWithOptions. Normally this would not work, as
the user's main would call QApplication::exec() at the end of their
main(), which would block and we would never return back from the
didFinishLaunchingWithOptions callback, resulting in no UI on screen.
We work around this by longjmp'ing out of QApplication::exec(), back
into didFinishLaunchingWithOptions, so that it can return. Again,
this would normally not work, as the call stack where QApplication
and friends would live would get smashed as the application
continued executing. We work around this by allocating a block
of stack space at the start of main(), which we then redirect the
stack pointer to before calling the user's main. This results in
the whole stack of the user's main() and below being preserved, even
if we longjmp out of the call stack (which then restores the
stack pointer).
This approach should work fine together with garbage-collection as
well, since the mark-and-sweep phase will walk the stack from the
stack pointer to the stack base, including sections of the stack
that were part of qt_user_main() and live in the reserved area.
One case where GC will fail though is if it happens as part of the
qt_user_main() call, where the GC will not mark anything in the
'real' callstack below UIApplicationMain(), but this is not
expected to happen.
The size of the reserved stack can be controlled through the
Info.plist key 'QtRunLoopIntegrationStackSize', as well as the
'QtRunLoopIntegrationDisableSeparateStack' key to disable the
separate stack approach completely. This will fall back to the
old approach. The amount of stack space used by the user's
main can be determined by enabling a special debugging mode,
using the 'QtRunLoopIntegrationDebugStackUsage' key.
Change-Id: I2af7a6cfe1a006a80fd220ed83d8a66d4c45b523
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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UIKit changes the run-loop mode during scrolling to UITrackingMode, which
presumably prioritizes touch events and other sources related to a
smooth scrolling experience. It signals this change by interrupting the
current run-loop pass, and the outer loop is responsible for re-entering
the run-loop in the new mode. Failing to enter the run-loop with this
new mode results in UIScrollViews losing their kinetic feel when
flicking. This can be observed by e.g. bringing up the Emoji keyboard
and scrolling it horizontally.
We keep track of the current run-loop mode by listening for push and pop
notifications on the UIApplication object. The current mode is then used
in our Q_FOREVER-loop when re-entering CFRunLoopRunInMode.
For now we don't add our posted event source or timer source to the
new modes, under the assumption that the system prefers to limit the
number of sources that will fire during scrolling. If this turns out
to give a bad user-experience for Qt applications we should consider
changing it.
Change-Id: I3a612b3cfc77c74b658963057732dc4d61684df8
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
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Instead of having separate code-paths for QEventLoop::EventLoopExec
and the non-blocking processEvent() we now have a single Q_FOREVER
loop where the logic can be shared. We make multiple loop-passes,
each time calling CFRunLoopRunInMode with potentially different
arguments, depending on the result of the previous run.
For the EventLoopExec case we'll continue making loop-passes until
the event-loop has been interrupted. For the non-EventLoopExec case,
we respect interruption, but will continue making loop-passes only
until we've processed all events in the queue, optionally waiting
for the initial event if WaitForMoreEvents is set. Limitations in
the CoreFoundation APIs unfortunately force us to keep some state
on whether or not we've processed events and timers for a given
processEvents() pass (with corresponding deferred scheduling of
timers and event source signaling).
The way we handle timers has also been rewritten to no longer defer
the timer activation to a special timer source. The constraint of
CoreFoundation timers is that they can not recurse (re-fire) in a
callback, but that only applies per timer, so using multiple CF
timers allows us to recurse. We still only use a single CF timer
for all the Qt timers though, and only spawn a new CF timer if
the user calls processEvents() inside a timer callback.
This commit removes the logic related to dealing with UITrackingMode,
as that logic was slighly problematic, but the feature will be
added back in a follow-up commit, in line with the new approach.
The result of this commit is that we're passing all event-loop,
event-dispatcher, and timer auto-tests, both for the QtCore dispatcher
and the GUI event-dispatcher.
Change-Id: I3c56fbc7857a25110064681257abb47075b5bd2d
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
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This approach follows the same one used by the Cocoa event dispatcher.
Change-Id: I2813b09beae07d90477c9ca506924058ace13f34
Reviewed-by: Ian Dean <ian@mediator-software.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
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Change-Id: If34953b171676f0246c2fb5e60c59f59350863ec
Reviewed-by: Ian Dean <ian@mediator-software.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
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Now that it lives in QPlatformSupport, will be fleshed out more, and
might be used on OSX at some point in time. Still iOS specific, as
none of the iOS API usages have been ifdef'ed.
Change-Id: Ib7fde6403ef2dfef175a6f306a85d58027569a30
Reviewed-by: Ian Dean <ian@mediator-software.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
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