Review Request 126369: [OS X] adaptation(s) to platform limitations (WIP)

Sun May 29 18:03:58 UTC 2016

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https://git.reviewboard.kde.org/r/126369/
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(Updated May 29, 2016, 8:03 p.m.)

Review request for KDE Software on Mac OS X and KDE Frameworks.

Changes
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Uses the Unicode BELL symbol instead of an exclamation mark to badge the Dock icon with when the user's attention is requested. That should be as universal as an exclamation mark (I still think that one is more universal as an *image* even if certain languages use a different symbol in written text).
In the end the importance is mostly to show something that doesn't have a meaning of its own; the badged text is shown in white on a red circle; the feature is usually used to show things like the number of unread messages.
One could use a single space in order to get just the red disk, or a (thick) hyphen to simulate a "go no further" traffic sign. Bothering translators with this seems a bit exagerated.

Repository: knotifications

Description
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OS X has a number of limitations in features used by KNotifications, notably concerning the status notifier item (aka system tray icon).

This RR will likely evolve to address multiple limitations (at least also the NeedsAttention state); at the moment it only proposes an emulation of `QMenu::addSection`.

`QMenu::addSection` works by adding a QAction with a "texted separator" at the insertion location. Texted separators do not exist in menu items in the OS X "global" menubar (they become regular separators), and Qt will not provide a platform-specific implementation. Loss of the section title text is maybe not always an issue, but I think it is in the system tray menu. I therefore propose to emulate `QMenu::addSection` by replacing the texted separator with an inactive (disabled) menu item that shows the text, followed by a standard separator. Menus in the notification area are much less subject to interface guidelines, so the presence of an item icon is acceptable and IMO useful for the `titleAction`.

Testing the NeedsAttention state with the tests/kstatusnotifieritemtest application leads to disappearance of the menubar icon, i.e. the access to the notifier menu becomes invisible rather than blinking (which is what I get on Linux using the same packaging). Adding a few qDebug statements shows that the `attentionIcon` is empty.
I'd appreciate a crash course how this feature is supposed to work, so I can see if an OS X implementation might be feasible.

Diffs (updated)
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  CMakeLists.txt 7cf8379 
  src/CMakeLists.txt 7eb3125 
  src/knotification.cpp 352cf49 
  src/kstatusnotifieritem.cpp 27abfb8 
  src/kstatusnotifieritemprivate_p.h 8fdfd4c 
  src/notifybypopup.cpp 7d69a36 
  tests/kstatusnotifieritemtest.cpp 973fc85 

Diff: https://git.reviewboard.kde.org/r/126369/diff/

Testing
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On OS X 10.9.5 with Qt 5.5.1 and frameworks 5.17.0 .

File Attachments
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the systray icon & menu created by kstatusnotifieritemtest . This application has no icon to show.
  https://git.reviewboard.kde.org/media/uploaded/files/2015/12/16/286037ae-07b3-454a-a226-1748854493a1__kstatusnotifieritemtest-systray.png
The systray icon and menu created by the KDE4 kwalletmanager (code has an equivalent patch)
  https://git.reviewboard.kde.org/media/uploaded/files/2015/12/16/4fc9d4e4-1537-478c-9196-94cbc17b6b7c__kwalletmanager-systray.png
An Apple systray icon+menu that shows icons (which cannot be hidden)
  https://git.reviewboard.kde.org/media/uploaded/files/2015/12/16/fc48a963-2e18-4396-bd38-062d41688118__Apple-systray-menu-with-icons.png
kstatusnotifieritemtest with added appIcon
  https://git.reviewboard.kde.org/media/uploaded/files/2015/12/17/e896e90d-f0a8-43f7-9199-847572832df7__kstatusnotifieritemtest-with-appIcon.png
kstatusnotifieritemtest-with-appIcon+attention.png
  https://git.reviewboard.kde.org/media/uploaded/files/2015/12/17/f41081db-8e09-4ea2-95c1-f507c62109d4__kstatusnotifieritemtest-with-appIconattention.png

Thanks,

René J.V. Bertin

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