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Message #114187
[Bug 1504776] Re: Uses depricated QEvent::ApplicationActivate
** Project changed: qtubuntu => qtubuntu (Ubuntu)
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https://bugs.launchpad.net/bugs/1504776
Title:
Uses depricated QEvent::ApplicationActivate
Status in qtubuntu package in Ubuntu:
New
Bug description:
qtubuntu plugin uses the ApplicationActivate and ApplicationDeactivate QEvents for life cycle management.
These have become deprecated and been replaced by Qt::ApplicationState since Qt5.1
The states should be set with:
QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationState
state)
The qtnamespace docs:
/*!
\enum Qt::ApplicationState
\keyword application state
This enum type is used to specify the current state of the
application.
The states are
\value ApplicationSuspended The application is about to suspend. When entering this state, the
application should save its state, cease all activities, and be
prepared for code execution to stop. While suspended, the
application can be killed at any time without further warnings
(e.g. when low memory forces the OS to purge suspended applications).
\value ApplicationHidden The application is hidden and runs in the background. This
is the normal state for applications that need to do background
processing, like playing music, while the user interacts with
other applications. The application should free up all graphical
resources when entering this state.
\value ApplicationInactive The application is visible, but not selected to be in front.
On desktop platforms, this typically means that the user
activated another application. On mobile platforms, it is
more common to enter this state when the OS is interrupting
the user with e.g. incoming calls or SMS-messages.
While in this state, consider reducing CPU-intensive tasks.
\value ApplicationActive The application is visible and selected to be in front.
\since 5.1
*/
This will also make it possible to set more appropriate life cycle
states. We can then react to Qt.ApplicationSuspended on the
application.state object from QML to react when the application gets
suspended.
UbuntuClientIntegration::hasCapability should then also return true
with ApplicationState
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