This patch provides some of the groundwork for column spans greater than
1. It implements the column-span CSS property as well as the
corresponding colspan attribute; although the former is not
well-specified outside of CSS multi-column layout, INTRINSIC refers to
it. Although width is distributed to spanning columns, they do not yet
contribute minimum and preferred widths; this will be implemented in a
follow-up.
The parsing for the legacy bgcolor and border attributes is
implemented according to the WHATWG HTML specification.
Additionally, this patch cleans up some miscellaneous formatting issues,
refactors layout/css somewhat to eliminate needless levels of
indirection, and cleans up the handling of table rowgroups.
New Hacker News screenshot: http://i.imgur.com/hnl2a7E.png
Source-Repo: https://github.com/servo/servo
Source-Revision: 8e31e5f98747e4b42dafcc4b076fac46aeb09310
Instead of creating a display list for the entire page, only create one
for an area that expands around the viewport. On my machine this makes
incremental layout of http://timecube.com 50% faster.
Source-Repo: https://github.com/servo/servo
Source-Revision: 26045d7fcbab8851fbefe2851cd904203f8fd8dd
Instead of looking at the display tree, have ContentBox(es)Query consult
the flow tree. This allow optimizing away parts of the display tree
later. To do this we need to be more careful about how we send reflow
requests, only querying the flow tree when possible.
Fixes#3790.
Source-Repo: https://github.com/servo/servo
Source-Revision: c9089c45c4b7d40419233b48a192d85a8ad71c99
r? @Ms2ger, @jdm
The parser is now a JS-managed object and we use hooks in html5ever to trace its internal state. This should be memory-safe even if arbitrary JavaScript can run during a parse. Please let me know if you think of a reason it wouldn't be!
I think the likely outcome of a garbage collection during parsing is a dynamic `RefCell` borrow failure, but I'm going to look into that after this lands. It should be safe to trace the parser while it's mutably borrowed, as long as it's not shared between threads, so we can probably switch to `UnsafeCell`.
Source-Repo: https://github.com/servo/servo
Source-Revision: 8d3b107568ab965b518b8003b702a5db993fa7d0
This patch puts in the initial framework for incremental reflow. Nodes' styles
are no longer recalculated unless the node has changed.
I've been hacking on the general problem of incremental reflow for the past
couple weeks, and I've yet to get a full implementation that actually passes all
the reftests + wikipedia + cnn. Therefore, I'm going to try to land the different
parts of it one by one.
This patch only does incremental style recalc, without incremental flow
construction, inline-size bubbling, reflow, or display lists. Those will be coming
in that order as I finish them.
At least with this strategy, I can land a working version of incremental reflow,
even if not yet complete.
r? @pcwalton
Source-Repo: https://github.com/servo/servo
Source-Revision: 85b277655f07db1cb99c4d3dee93804735ed0470
