Review Request 126621: [Task Manager] Add support for Unity Launcher API

[Thomas Pfeiffer]

> On Jan. 4, 2016, 7:58 a.m., Heiko Tietze wrote:
> > Pretty cool stuff. Guess there will some greediness from other launchers.
> > On the first glance I read the tool as a launcher for Unity, which would be weird. So I suggest to think about renaming, maybe just without the space.
> 
> Kai Uwe Broulik wrote:
>     I was thinking if it makes sense to indicate application progress here, too, ie. that copying a file in Dolphin should also be indicated similarly to the Unity stuff (in addition to the progress in notification area, though). The old icon tasks had this, in which case this would no longer be Unity-specific. I don't know if Gnome has a similar API. there's also dock manager API used by Cairo Dock but afaict it is deprecated.

@Heiko: The name "Unity Launcher API" is really just the API that is used in the background (and we cannot change that name anyway), it's not user-visible anywhere


- Thomas


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On Jan. 3, 2016, 11:18 p.m., Kai Uwe Broulik wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/126621/
> -----------------------------------------------------------
> 
> (Updated Jan. 3, 2016, 11:18 p.m.)
> 
> 
> Review request for Plasma, KDE Usability, Craig Drummond, Eike Hein, and Lukáš Tinkl.
> 
> 
> Bugs: 343632
>     https://bugs.kde.org/show_bug.cgi?id=343632
> 
> 
> Repository: plasma-desktop
> 
> 
> Description
> -------
> 
> This adds support for the Unity Launcher API [1] with which applications can show a progress indicator, a number badge as well as demand the user's attention.
> 
> This functionality has been present in the Icon Tasks applet [2] in Plasma 4 times. libunity must be present for most applications to actually use this.
> 
> I did not want to pollute libtaskmanager with this, so I made it a plugin in the Task Manager applet, which should also be fairly trivial to update to the new Launcher API that Unity 8 is going to use [3], or if we come up with our own solution at some point, maybe.
> 
> The primary focus is still the icons only task manager as the Unity API works on a per-application/per-launcher basis rather than per-window, however, where it makes sense the functonality is also offered to the traditional task manager. A downside of this is that (in the current implementation, anyways) in case you do not group your tasks and you have multiple windows of the same task open, it will show the same information on all entries.
> 
> For progress it gradually fills up the background of the task (VDG: I need a better graphic here, I currently abuse the "hover" tasks SVG, also I find the "+2" badge less than optimal) in all cases. The badges are only shown if 1) the cell is large enough 2) the label is *not* shown (ie. icon tasks manager or the regular one in very narrow). The badge is just a circle in theme highlight color, not an actual SVG - it cuts off part of the icon to provide more contrast. The "urgent" state just highlights the entry as if it requested attention, there's no wiggle animation and this is nowhere integrated with the window manager, also I did not find an application that used this, so I have no idea how it's used by them.
> 
> A video with the regular task manager on the top, a regular task manager and an icon tasks applet in the left panel and an icon tasks applet on the desktop (the latter is broken in the video, fixed in this patch) can be found here [4].
> 
> (There's still a ton of qDebug in the code at this point)
> 
> [1] https://wiki.ubuntu.com/Unity/LauncherAPI
> [2] http://kde-apps.org/content/show.php/Icon+Tasks?content=144808
> [3] http://bazaar.launchpad.net/~unity-team/unity8/trunk/files/head:/plugins/Unity/Launcher/
> [4] https://www.youtube.com/watch?v=aBPGjlP6Wd8
> 
> 
> Diffs
> -----
> 
>   applets/taskmanager/CMakeLists.txt 3c94cb7 
>   applets/taskmanager/package/contents/ui/Task.qml 2a88886 
>   applets/taskmanager/plugin/taskmanagerplugin.cpp 1be1fed 
>   applets/taskmanager/plugin/unitylauncher/unitylauncherbackend.h PRE-CREATION 
>   applets/taskmanager/plugin/unitylauncher/unitylauncherbackend.cpp PRE-CREATION 
>   applets/taskmanager/plugin/unitylauncher/unitylauncheritem.h PRE-CREATION 
>   applets/taskmanager/plugin/unitylauncher/unitylauncheritem.cpp PRE-CREATION 
> 
> Diff: https://git.reviewboard.kde.org/r/126621/diff/
> 
> 
> Testing
> -------
> 
> I started a download in Chromium and got progress as well as a badge indicating how many download jobs were in progress. Thunderbird also registered a launcher on DBus but it never actually set a badge although I had unread mail.
> 
> 
> File Attachments
> ----------------
> 
> Unity Launchers
>   https://git.reviewboard.kde.org/media/uploaded/files/2016/01/03/c4c552a5-0449-47b1-a7f2-35ac20886cd0__unitylauncherstuff.png
> Two unrelated windows
>   https://git.reviewboard.kde.org/media/uploaded/files/2016/01/03/3817426d-42e7-4aca-9478-2774f6908589__twounrelatedlaunchers.png
> 
> 
> Thanks,
> 
> Kai Uwe Broulik
> 
>

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