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Clark Gaebel e1fa32f008 servo: Merge #3590 - Incremental Style Recalc (from cgaebel:slow-incremental-reflow-rebase); r=pcwalton
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
2014-10-09 11:21:32 -06:00
servo servo: Merge #3590 - Incremental Style Recalc (from cgaebel:slow-incremental-reflow-rebase); r=pcwalton 2014-10-09 11:21:32 -06:00