Javier Fernández

A Coruña (Spain), 1977

I have been working at Igalia since January 2003, and people usually call me JaviF (Javi Fisterra) or jfernandez.

Latest Updates

Javier Fernández 09/10/2016

Web Engines Hackfest 2016

Last week I attended the Web Engines Hackfest 2016, hosted by Igalia at the HQ premises in A Coruña. For those still unaware, it’s a unconference like event focused on pure hacking and technical discussions about the main Web Engines supporting the...

Javier Fernández 24/06/2015

Performance on Grid Layout

Now that we have a quite complete implementation of CSS Grid Layout specification it’s time to take care of performance analysis and optimizations. In this essay, which is the first of a series of posts about performance, I’ll first introduce...

Javier Fernández 01/06/2015

Distributing tracks along Grid Layout container

In my last post I introduced the concept of Content Distribution alignment and how it affects Grid Layout implementation. At that time, it was possible to use all the <content-position> values to select grid tracks position inside a grid...

Javier Fernández 09/03/2015

Content Distribution in CSS Grid Layout

It’s been a while since Igalia and Bloomberg started to implement the Box Alignment specification for the CSS Grid Layout model. Some weeks ago we accomplished an important milestone of our roadmap landing in Blink trunk the last patches...

Javier Fernández 12/01/2015

Box Alignment and Grid Layout (II)

Some time has passed since my first post about the Box Alignment spec implementation status for Blink and WebKit web engines. I’ll do an update in this post and, since the gap between both web engines has grown considerably (I’ll do my best to...

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Changeset [210792]: [css-grid] Implementing baseline positioning for grid containers ...

6 edits6 adds in trunk [css-grid] Implementing baseline positioning for grid containers ​https://bugs.webkit.org/show_bug.cgi?id=165063 Reviewed by Darin Adler and Sergio Villar Senin. Source/WebCore: Implementation of the 'first-line' baseline...

Javier Fernández17/01/2017

Changeset [210669]: [css-grid] Make the grid sizing data persistent through layouts ...

6 edits8 adds in trunk [css-grid] Make the grid sizing data persistent through layouts ​https://bugs.webkit.org/show_bug.cgi?id=166883 Reviewed by Darin Adler and Manuel Rego Casasnovas. Source/WebCore: We want to keep the grid sizing data...

Javier Fernández12/01/2017

Use logicalBottom when computing baselines in vertical-lr inline-blocks

Use logicalBottom when computing baselines in vertical-lr inline-blocks When computing the baseline position of inline-block elements we use the InlineFlow logicalTop and the FontMetrics ascent. The issue comes from the fact that these units are...

Javier Fernández14/12/2016

[css-grid] Use child's marginLogicalWidth to compute content-sized track

[css-grid] Use child's marginLogicalWidth to compute content-sized track When computing min-content and max-content of the content-sized tracks we are using the marginIntrinsicLogicalWidthForChild function, which uses the grid's writing-mode to...

Javier Fernández03/12/2016

Revert of "Use firstInFlowChildBox API for iterate over the grid items"

Revert of "Use firstInFlowChildBox API for iterate over the grid items" This reverts commit d0d28056752b04b36f5acce5452d1cd64ce4d5c3. BUG=662016

Javier Fernández25/11/2016