Debarshi's den

Core Apps Hackfest 2016: report

with 5 comments

I spent last weekend at the Core Apps Hackfest in Berlin. The agenda was to work on GNOME’s core applications: Documents, Files, Music, Photos, Videos, Usage, etc.; to raise their overall standard and to make them push beyond the limits of the framework. There were 19 of us and among us we covered a wide range of modules and areas of expertise.

I spent most of my time on the plumbing necessary for Documents and Photos to use GtkFlowBox and GtkListBox. The innards of Photos had already been overhauled to reduce its dependency on GtkTreeModel. Going into the hackfest we were sorely lacking a widget that had all the bells and whistles we need — the idiomatic GNOME 3 selection mode, and seamlessly switching between a list and grid view. So, this is where I decided to focus my energy. As a result, we now have a work-in-progress GdMainBox widget in libgd to replace the old GtkIconView/GtkTreeView-based GdMainView.

gnome-photos-flowbox

In fact, GtkListBox and GtkFlowBox was a recurring theme at the hackfest. Carlos Soriano and Georges were working on using them in Files, and whenever anybody uses them in a non-trivial manner there is the inevitable discussion about performance. Good thing that Benjamin was around. He spent the better part of a tram ride and more than an hour at the whiteboard, sketching out a strategy to make GtkListBox more efficient than it is today.

Like last year, Øyvind joined us. We talked about GEGL, and I finally saw the new GIMP in action. I rarely use GIMP, and I am not sure I have ever built it from source, but I have been reading its sources on a semi-regular basis for almost a year now. It was good to finally address this aberration. Øyvind had with him a cheap hand-held DLNA media renderer that was getting stuck when trying to render more than one image with dleyna-render and Photos. Zeeshan helped me poke at it, but unfortunately we didn’t get anywhere.

Other than that, Petr Stetka impressed everyone with his progress on the new Usage application. Georges refreshed his patches to implement the new Online Accounts Settings panel, Carlos Garnacho helped me with GtkGesture, and I reviewed various patches and branches that had been on my list for a while.

Many thanks to Red Hat for sponsoring me; to Carlos Soriano and Joaquim for organizing the event; to Kinvolk for being such gracious hosts; and to Collabora for the nice dinner.

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Written by Debarshi Ray

3 December, 2016 at 20:02

5 Responses

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  1. hi – i wonder if there are plans to update GCOLOR2 to GTK3 – a small program, i use daily – where can i ask more for details? http://gcolor2.sourceforge.net

    major_tom

    10 December, 2016 at 05:25

    • gcolor2 doesn’t fit the criteria of being a “core application” so we didn’t cover it during the hackfest. It is best to contact the gcolor2 developers about their plans for gtk+ 3.x support. Since it is a colour picker, one should also keep Wayland in mind. Unlike X, an application can’t sniff the contents of another. I guess you can hack something up using gnome-shell’s (which is a Wayland server) screenshot API.

      Debarshi Ray

      12 December, 2016 at 20:05


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