Fwd: [Development] New library in qtbase

[Aleix Pol]

Such library could be very useful for us!

Aleix

---------- Forwarded message ----------
From: Samuel Gaist <samuel.gaist at edeltech.ch>
Date: Sat, Nov 26, 2016 at 12:51 AM
Subject: [Development] New library in qtbase
To: Qt development mailing list <development at qt-project.org>


Hi,

As requested by Thiago in
https://codereview.qt-project.org/#/c/166456/ I’d like to open a
discussion about adding a new library in qtbase.

Why this discussion ?

Currently in work a pluggable notification system developed in its own
library in qtbase.

Why add a new library ?

Originally the submission was integrated in QPA however after some
thoughts and discussion, it was reworked to avoid that so that
developers of non-GUI application could also take advantage of
notifications without the need of a QGuiApplication.

One of my motivation to move the code in its own library was that the
second implementation provided a run-time plugin selection mechanism
much like the QtSql module. After further discussion, the plugin
selection has been moved to build-time.

The library as it is currently could even be in its own repository
however the goal in the long run is to replace the code used in
QSystemTrayIcon by calls to this module which at this time duplicates
the showMessage logic for macOS. Therefore having it as a separated
repo would mean that qtbase would depend on it to be build which IMHO
is not an option.

So basically we are at this point:

1) Keep the new notifications module
2) Move the code in the gui module since QImage might be used

In any case, the outcome of this discussion should likely be written
in a QUIP so we have a clear set of rules about adding new libraries
in existing Qt modules.

Thank you for your attention

Samuel
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