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GNOME

GtkInspector Now Supports Dealing With Multiple Back-Ends For GTK

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GNOME

Matthias Clasen did some weekend hacking to allow GtkInspector to work across different display connections, e.g. debugging a GTK application running in Wayland while GtkInspector is running under X11 or the HTML5 Broadway back-end.

Clasen managed with his weekend hack to get things working with GTK3 demo running under X11 while the GtkInspector was running with the HTML5 Broadway back-end inside Firefox. While GtkInspector isn't used by many, this is an interesting feat on a technical level and is likely the first implementation of a GTK+ application using multiple GDK back-ends simultaneously.

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GNOME: A WEEKEND HACK

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Development
GNOME

I’ve been working on making GtkInspector use a different display connection. This helps isolating it from some of the changes you can trigger from inside the inspector UI. Then I thought, why not use a different backend ?!

We did enough work on GDK backend separation that it could almost work. But since we didn’t add API to actually connect to specific backends (users and applications get some control with GDK_BACKEND and gdk_set_allowed_backends()), nobody has ever used multiple backends in the same process. And things that don’t get used don’t work. So some fixes were necessary.

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Introducing Gthree

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Development
GNOME

I’ve recently been working on OpenGL support in Gtk+, and last week it landed in master. However, the demos we have are pretty lame and are not very good to show off or even test the OpenGL support. I’ve looked around for some open source demos that used modern GL that we could use, but I didn’t find anything that we could easily use.

What I did find though, was a lot of WebGL demos that used three.js. This looked like a very nice open source library for highlevel 3d rendering. At first I had some plans to bind OpenGL to gjs so that we could run three.js, but this turned out to be a hard.

Instead I started converting three.js into C + GObject, using the Gtk+ OpenGL support and the vector/matrix library graphene that Emmanuele has been working on recently.

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Ubuntu GNOME 14.10 Released and Based on GNOME 3.12 – Screenshot Tour

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GNOME
Ubuntu

The GNOME flavor of Ubuntu is a newer one, although the devs have already made a few releases. It uses the stock GNOME stack and it’s had great success until now, despite the fact that it doesn't pack the latest version of the desktop environment. The developer has explained more than once why that is happening, but the good news is that people will be able to install GNOME 3.14 packages nonetheless.

The Ubuntu GNOME developers have more features to show than the Ubuntu base used, but that was to be expected, especially after the GNOME stack has been updated from the 3.10 branch to 3.12.

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GTK+ Lands Experimental Backend For Mir Display Server

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GNOME

GTK+ apps now run not only on X11 and Wayland under Linux with native support but the mainline GTK+ Git code now also supports running Ubuntu's Mir Display Server. That's right, there's now mainline Mir support in GTK for the GNOME/GTK 3.16 release.

Beyond many GTK+ 3.16 improvements that already landed, Canonical's Robert Ancell has been leading work on mainlining the GTK+ Mir support capabilities. As of yesterday in Git, that work is now in Git for GTK+ 3.16 and all of the GTK+ 3.15.x development releases ahead.

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AN EARLY VIEW OF GTK+ 3.16

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Development
GNOME

We’ve had long-standing feature requests to turn scrollbars into overlayed indicators, for touch systems. An implementation of this idea has been merged now. We show traditional scrollbars when a mouse is detected, otherwise we fade in narrow, translucent indicators. The indicators are rendered on top of the content and don’t take up extra space. When you move the pointer over the indicator, it turns into a full-width scrollbar that can be used as such.

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Most Popular Linux Desktop Environment: GNOME Shell

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GNU
Linux
GNOME

Even after settling on a Linux distribution to use, you still have to decide on a desktop environment. There are tons to choose from, and last week we asked you for your favorites. Then we looked at the five best Linux desktop environments. Now we're back to highlight your favorite, 11,000 votes later.

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Development of Nautilus – Popovers, port to GAction and more

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GNOME

In an application that already use GAction and a normal GMenu for everything is quite easy.

But Nautilus is not using GAction neither GMenu for its menus. Not only that, Nautilus use GtkUIManager for managing the menus and GtkActions. And not only that, Nautilus merge parts of menus along all the code.

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Review: Scientific Linux 7.0 GNOME

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Red Hat
GNOME
Reviews

It has been a while since I have done a review (almost 3 months, in fact). It has been significantly longer since I have looked at Scientific Linux (over 3 years, in fact). Given that, I figured it might be worthwhile to make this review about Scientific Linux 7.0. I'm just glad that I did it before the time elapsed for something else to come up (around 3 minutes, in fact — OK, I just made that one up to match the other statements).

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GTK+ Gains Experimental Overlay Scrollbars

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Development
GNOME

The overlay scrollbar work that was committed on Monday is about improving the scrolling experience for those using GTK+ applications from touch screens. This prototype widget allows for showing a scroll position indicator on touch screens while hiding the scrollbar -- it sounds similar to Ubuntu's GTK2/GTK3 overlay scrollbar support for Unity.

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More in Tux Machines

OSS: Blockchain, DeepBrain, Redox OS, OpenBuilds, Red Hat Summit and FOSSASIA

  • It's About Time DApps Unlocked the Mass-Market Momentum for Blockchain
    There’s more to Blockchain technology than Bitcoin and other cryptocurrencies. At its fundamental level, Blockchain technology engenders trusts in inherently trustless environments. Protocol blockchains such as Bitcoin, Ethereum, EOS, GoChain, Steem and xDai have provided a launchpad for developers to work on DApps. DApps are typically open source applications not owned by anyone, immune from downtimes; and that cannot be shut down by a government or its agencies. The rapid proliferation of Decentralized Applications (DApps) powered a bull run in cryptocurrencies in 2017. Right now, there are more than 2000 DApps designed to solve specific market problems across industries such as health, data storage, finance, gaming, and governance.
  • DeepBrain Chain outlines release of DBC 0.3.6.0 beta in progress report
    DeepBrain Chain detailed the release of DBC 0.3.6.0 beta of its AI Training Net, which allows users to rent computing power to train artificial intelligence algorithms. DeepBrain Chain claimed numerous feature inclusions and and improvements, many pertaining to the scheduling and activation of tasks. In DBC 0.3.6.0, if an AI training task has been stopped a specified period of time, its storage will be deleted automatically. However, the task can be restarted at any time before deletion. If a node has been restarted, reactivation of any previous training tasks will require manual user authorization. [...] A decision was made recently by the community concerning the open source licensing of DeepBrain Chain’s code. Over 55 percent of the members polled voted to not make the code fully open source by the end of March.
  • Redox OS 0.5.0
    It has been one year and four days since the last release of Redox OS! In this time, we have been hard at work improving the Redox ecosystem. Much of this work was related to relibc, a new C library written in Rust and maintained by the Redox OS project, and adding new packages to the cookbook. We are proud to report that we have now far exceeded the capabilities of newlib, which we were using as our system C library before. We have added many important libraries and programs, which you can see listed below.
  • Redox OS 0.5 Released With New C Library Written In Rust
    It's been just over one year since the previous release of Redox OS while today this Rust-written operating system has finally been succeeded by Redox OS 0.5.  It's taken a while since the previous release of Redox OS as they have been focusing their attention on Relibc, a C library implementation written within the Rust programming language. Relibc is now used as the operating system's default C library.
  • Get Moving with New Software from OpenBuilds
    If you’re reading Hackaday, you’ve probably heard of OpenBuilds. Even if the name doesn’t sound familiar, you’ve absolutely seen something on these pages that was built with their components. Not only is OpenBuilds a fantastic place to get steppers, linear rails, lead screws, pulleys, wheels, and whatever else you need to make your project go, they’re also home to an active forum of people who are passionate about developing open source machines. As if that wasn’t enough reason to head over to the OpenBuilds website, [Peter Van Der Walt] recently wrote in to tell us about some new free and open source software he and the team have been working on that’s designed to make it easier than ever to get your creations cutting, lasing, milling, and whatever else you could possibly imagine. If you’ve got a machine that moves, they’ve got some tools you’ll probably want to check out.
  • Dive into developer-focused sessions at Red Hat Summit
    Red Hat Summit is just around the corner, and it’s shaping up to be best Red Hat developer event ever. This year, attendees will get to choose from more than 300 sessions, not to mention booth presentations, parties, labs, and training. To help you cut through the clutter, we’ve created a list of developer specific activities and sessions that will help you shape your Red Hat Summit experience. Most of these sessions are part of the Cloud-Native App Dev track, with a few other sessions that we think will appeal to you as a developer. For more information on these sessions, visit the Red Hat Summit session listing page and sort by “cloud-native app dev” track.
  • 10th year of FOSSASIA
    This FOSSASIA was special as it marked its 10th year! It was quite impressive to witness a FOSS conference to continue growing this long with growing community. The four day conference schedule was packed with various interesting talks, workshops, hackathon and other engaging activities.

Reducing sysadmin toil with Kubernetes controllers

Kubernetes is a platform for reducing toil cunningly disguised as a platform for running containers. The element that allows for both running containers and reducing toil is the Kubernetes concept of a Controller. [...] The canonical example of this in action is in how we manage Pods in Kubernetes. A Pod is effectively a running copy of an application that a specific worker node is asked to run. If that application crashes, the kubelet running on that node will start it again. However, if that node crashes, the Pod is not recovered, as the control loop (via the kubelet process) responsible for the resource no longer exists. To make applications more resilient, Kubernetes has the ReplicaSet controller. The ReplicaSet controller is bundled inside the Kubernetes controller-manager, which runs on the Kubernetes master node and contains the controllers for these more advanced resources. The ReplicaSet controller is responsible for ensuring that a set number of copies of your application is always running. To do this, the ReplicaSet controller requests that a given number of Pods is created. It then routinely checks that the correct number of Pods is still running and will request more Pods or destroy existing Pods to do so. By requesting a ReplicaSet from Kubernetes, you get a self-healing deployment of your application. You can further add lifecycle management to your workload by requesting a Deployment, which is a controller that manages ReplicaSets and provides rolling upgrades by managing multiple versions of your application's ReplicaSets. Read more

Android Leftovers

Server: IBM, LAMP and Kubernetes

  • A HATS For Many Occasions
    IBM gives customers plenty of options when it comes to its Rational Host Access Transformation software, including several modes of operation, different runtime options, and support for different operating systems in screen modernization engagements. With last week’s launch of HATS version 9.7, the development and deployment options got even wider. Regardless of which downstream options a HATS customer ultimately chooses, it all starts out basically the same on the front side of the sausage machine: Customers come to HATS because they have a 5250 (or 3270 or VT100) application that they want to transform, but they don’t want to go through the hassle, expense, and risk of modifying the IBM i, z/OS, or Unix application’s source code.
  • Six top skills that you should acquire in 2019
    There is a growing demand for the fullstack development skill set, which is the ability to develop tech both on the front-end/client side and back-end/server side. As you can’t learn all, select combinations like MEAN or LAMP stack.
  • Kubernetes and the Enterprise
    The reason we were having this conversation was around SUSE’s Cloud Application Platform (CAP). This is our Kubernetes focused Cloud Foundry distribution. And as part of the Kubernetes focus, we have been supporting and running SUSE CAP on Azure’s AKS for the last year or so. The conversation continued with observations that Kubernetes was clearly the future across IT. Yet to date, Cloud Foundry still has a good following with the large enterprise. And the thinking was that the Cloud Foundry approach really helped the large enteprise work with their applications, even if the applications were purely ‘container’ applications. Cloud Foundry makes the container-side of managing your ‘container’ application transparent. This approach ultimately lowers the tasks, breadth of tooling, and knowledge you have to surround Kubernetes with. It was with this thought, that a light-bulb went on.