This was necessary in the past, because IFC would set the height of its
containing block after inline layout.
Now that IFC can properly communicate the automatic size to its parent
formatting context, this hack is no longer necessary.
"Specified" means something else in CSS, so let's not use this
overloaded word here. These helpers return the inner main/cross size of
a given box, so let's say "inner" instead.
This moves color to be the first value resolved, this ensures that
calls to .to_color() on style values for other properties will always
be able to resolve the current color.
This change fixes the `background-color: currentColor` example in
colors.html.
The name "initial containing block" was wrong for this, as it doesn't
correspond to the HTML element, and that's specifically what it's
supposed to do! :^)
If a box has clearance and margin bottom of preceding box is greater
than static y of the box then it should also affect y offset in current
block container so subsequent boxes will get correct y position too.
Though table wrappers are anonymous block containers (because
TableWrapper is inherited from BlockContainer) with no lines they
should not be skipped in block auto height calculation.
The shadowRoot property getter that will be added in subsequent commits
has an additional check that checks whether the shadow root is opened.
I didn't update the function logic to match with the IDL interface,
because it's very likely we don't want that check in the existing code,
so that for example closed shadow root elements can still be updated.
The goal here is to allow Cell::initialize to return a ThrowCompletion,
to handle OOM for example. Cell.h will then need to include Completion.h
which must include Value.h. This currently can't happen because Value.h
includes BigInt.h, which in turn includes Cell.h. So we would have an
include cycle.
This removes BigInt.h from Value.h, as it is forward-declarable (it is
only referred to with a reference or pointer). Then the Value overload
for Cell::Visitor::visit is moved to Cell.h, and missing BigInt.h
includes as peppered as needed.
We were incorrectly using the inner main size of the flex container
instead of the avilable space in some parts of the remaining space
calculation. This meant that the algorithm only worked correctly
for definite available space in the main axis.
If we've already established the used width for a flex item, we need
to take it into account when calculating the min-content and max-content
heights for that item.
We were already doing this when calculating cross sizes. This patch adds
the same consideration for main sizes.
Previously block auto height calculation was changed to skip boxes with
collapsed margins and then condition to skip anonymous boxes with no
lines was also removed in 6c5ba10bb0 to
avoid skipping anonymous wrappers of tables.
Skipping boxes with collapsed margins (currently it's check that
height is 0) is wrong because it makes empty boxes with clearance to
be skipped which is not correct while anonymous boxes with no lines
should be skipped and it's no longer causes problems with tables
(fixed in 87f0e835eb)
Commit 7dc0edcb86 was supposed to prevent
floats from being placed higher than preceding boxes but the change
turned out to be completely wrong and caused regressions because:
1. Call to `clear()` in `layout_block_level_children` would reset
floating boxes only after layout of box with _not_ inline children
although the same should happen after layout of IFC.
2. `clear()` causes offset y of floats to be reset but it also clears
all currently enocuntered floating boxes which means the next box
that has actual clearance will get wrong y position.
Per CSS-SIZING-3, the min-content block size should be equivalent to the
max-content block size for some boxes.
Honoring this gives more correct results, and avoids unnecessary work in
many cases since the cached max-content size can be reused.
Grid containers were incorrectly represented as BlockContainer before.
Furthermore, GridFormattingContext had a bogus inheritance relationship
with BlockFormattingContext.
This patch brings our architecture closer to spec by making grid
containers be plain boxes and making GFC not inherit from BFC.
There is a difference in y offset position calculation for floats when
LineBuilder provides final y position while for blocks it needs to be
adjusted by `y_offset`. This difference already accounted in floating
box position calculation and this patch also makes it accounted in check
whether a floating boxes on the same line intersect between each other.
If valid grid-template-areas were given, then place grid items within
these areas. Grid-template-areas take precedence over named line
tracks, meaning if there are grid-areas as well as named tracks, should
use the grid-areas.
When starting the GridFormattingContext, calculate the valid grid areas
as declared in the `grid-template-areas` property. Since this doesn't
change, are able to do this once and store the results.
In some sections of the code, previously would use the values passed to
`grid-column-start`, `grid-row-end`, etc. literally. Since these values
start at grid-column 1 instead of 0 (as represented in most areas in
the code), this made the code unnecessarily complicated.
Now the values are zero-indexed from the getgo.
Change `compute_auto_height_for_block_level_element` to use max height
(`m_automatic_content_height` produced from TFC) for tables with auto
height which is more correct behaviour than treating them like block
containers.
