Before this change, Servo used one code path that computed the position
of flows with `position: static` or `position: relative` and another
separate code path that computed the position of flows with `position:
absolute` or `position: fixed`. The latter code attempted to duplicate
the former code to determine the static position of hypothetical boxes,
but this was both fragile and incorrect in the case of hypothetical
boxes nested inside floats. In fact, it's impossible to determine the
static position of an absolute flow relative to its containing block at
inline-size assignment time, because that static position could depend
on a float that cannot be placed until block-size assignment!
This patch changes block layout to use the same code path for static
positioning of regular flows and static positioning of absolute flows
where applicable. This both simplifies the code and improves its
efficiency, since it allows the `hypothetical_position` field and
`static_block_offsets` data structure to be removed. Moreover, it
improves correctness in the above case (which the new reftest checks).
This allows the sidebar in Facebook Timeline to be positioned properly.
r? @glennw
Source-Repo: https://github.com/servo/servo
Source-Revision: bdcf606f4802e5b1ab3ee251b45ee1e81800359a
As the float ceiling is relative to the border box, not the margin box,
of the parent flow, top margin must not be included.
This exposed a pre-existing bug whereby margins are discarded if a block
contains only floats and no content, affecting the tests
`float_intrinsic_height.html` and `margins_inside_floats_a.html`. As a
workaround, some invisible content has been added to the bodies of both
tests.
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: 1c884dc76bef440f8ccd344fab874e2e2161683b
Ready for review.
Final link step on android fails, but we know how to fix it and will add it to this branch soon.
Source-Repo: https://github.com/servo/servo
Source-Revision: 2cc08f289ab909de44fa09a07b2c43b70ce379b9
(Still off by default. Enable with `RUST_LOG=style`.)
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: 172aed535be3c34775824dac64ad2b91fc379ad5
This also enables incremental reflow by default. \o/
r? @pcwalton
Source-Repo: https://github.com/servo/servo
Source-Revision: f6941b35e3b945f4a6dcd2cf03daa345ad2bcaed
http://dbaron.org/css/intrinsic/
Column spans are not yet supported.
This effectively adds support for percentage widths, and it also fixes
many bugs, improving the layout of Google and Wikipedia.
r? @SimonSapin
Source-Repo: https://github.com/servo/servo
Source-Revision: e2d7777c41135b71293c195d2a9d7a1bc2afd0ca
