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GNOME Development Updates

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GNOME
  • libgepub + rust

    In 2010 I was working with evince, the gnome PDF document viewer, trying to add some accessibility to PDF files. That was really hard, not because GTK+ or ATK technology but because the PDF format itself. The PDF format is really cool for printing because you know that the piece of paper will look the same as the PDF doc, and because it's vector it scales and don't loose quality and files are smaller than image files, but almost all PDF files have not any metadata for sections, headings, tablets or so, this depends on the creation tool, but it's really hard to deal with PDF content text, because you don't know event if the text that you're reading is really in the same order that you read from the PDF.

    After my fight against the PDF format hell and poppler, I discovered the epub format that's a really simple format for electronic books. An epub is a zip with some XML files describing the book index and every chapter is a xhtml and xhtml is a good format compared to PDF because you can parse easily with any XML lib and the content is tagged and well structured so you know what's a heading, what's a paragraph, etc.

    So I started to write a simple C library to read epub files, thinking about add epub support to evince. That's how libgepub was born. I tried to integrate libgepub in evince, I've something working, rendering with webkit, but nothing really useful, because evince needs pages and it's not easy to split an xhtml file in pages with the same height, because xhtml is continuous text and it adapts to the page width, so I give up and leave this branch.

  • My final report for GSoC 2018

    The Google Summer of Code 2018 is coming to an end for me, so it means that it’s time for the final report!

    [...]

    I’ve created a media (although for now it only works with pictures) viewer for Fractal. Its purpose is to easily have a better view of the images within a room, to be able to zoom in and out of them, to navigate between the different images of the room in the chronological order, to enter in a full screen mode and to save a copy of the media in the filesystem. I made a first implementation and then had to do a lot of other improvements. I’ve spent about a month working on it.

    There is still the need to improve the zoom of the media viewer as the pictures are a little bit blurred and it’s not possible to zoom beyond 100%. There are optimizations to do as the application becomes very slow when trying to zoom beyond 100% on large pictures.

  • GUADEC 2018

    A few weeks ago I attended GUADEC in Almeria, Spain. The travel was a bit of an adventure, because Julian and I went there and back from Italy by train. It was great though, because we had lots of time to hack on Fractal on the train.

    [...]

    On Monday I attended the all-day Librem 5 BoF, together with my colleagues from Purism, and some community members, such as Jordan and Julian from Fractal.

    We talked about apps, particularly the messaging situation and Fractal. We discussed what will be needed in order to split the app, make the UI adaptive, and get end-to-end encryption. Daniel’s work on the database and Julian’s message history refactor are currently laying the groundwork for these.

    On the shell side we talked through the design of various parts of the shell, such as keyboard, notifications, multitasking, and gestures. Though many of those things won’t be implemented in the near future, we have a plan for where we’re going with these, and getting designers and developers in one room was very productive for working out some of the details.

    We also discussed a number of exciting new widgets to make it easier to get GNOME apps to work at smaller sizes, such as a new adaptive preferences window, and a way to allow modal windows to take up the entire screen at small sizes.

More in Tux Machines

Flock 2018 Reports

Kernel: Linux 4.19 and Vega 20 PowerPlay

  • Power Management Updates Land In The Linux 4.19 Kernel
    Intel's Rafael Wysocki has submitted the ACPI and power management updates today for the Linux 4.19 kernel which were subsequently merged by Linus Torvalds.
  • Linux 4.19 Git Contains a lot of Performance Impacting Spectre Mitigation Updates
    Another round of commits regarding anti-Spectre security have landed up in the Linux 4.19 kernel git tree, which may have possible performance impacts for the kernel. While Spectre is still only a somewhat theoretical threat, as its entirely too slow to be used in a serious attack, many folks are taking its future potential quite seriously and arming up against it.
  • Linux 4.19 Kernel to Receive a Ton of Audio Hardware Updates for Improved Linux Sound Capabilities
    Linux audiophiles may have something to rejoice about, as a recent pull request from SUSE’s Takashi Iwai focuses on a plethora of sound subsystem updates for the Linux 4.19 kernel, including a lot of latest hardware support and overall improvements for Linux’s audio capabilities.
  • Updated Vega 20 Open-Source Driver Patches Posted, Including PSP & PowerPlay Support
    Back in May AMD posted initial open-source "Vega 20" patches and support for that yet-to-launch graphics processor was subsequently merged for the Linux 4.18 kernel. More of the Vega 20 AMDGPU kernel driver enablement has now been posted. This latest 69,910 lines of code -- before fretting, most of that is auto-generated header files for the GPU -- notably adds PSP (Platform Security Processor) and SMU (System Management Unit) for Vega 20. With the SMU enablement code, it's also now wired in to enable Vega 20 PowerPlay support as well as related power/clocking-functionality like OverDrive overclocking is also available.

today's howtos

Security: Disclose.io, Adobe, Apple and Instagram

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