If a collapsed border has the `currentcolor` color, we were resolving it
using the color of the table. Now we resolve it using the color of the
box which owns the border that wins and becomes the collapsed border.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
If `width` is indefinite, treat the outer size as zero, instead of
treating the content size as zero and then adding padding and borders.
Also, we don't want a default minimum of zero to get added padding and
borders, and then defeat the point baove. So just ignore minimums and
maximums.
That seems to roughly match what other browsers do, but as usual, the
details are not interoperable, e.g. some browsers may obey min or max
sizing properties in some cases.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Some of these tests were using `no_red_3x3_monospace_table-ref.xht` as
a reference. However, the reference has a single 3x3 table, while the
tests put each row on a different table. Thus text wasn't aligning well,
and the tests were failing on all browsers. Therefore this adds a new
reference for these tests.
Some other tests were instead adding a background on their columns.
These also get their own reference. But additionally, these tests
attempt to work as visual tests by overlapping two tables: one with
green text in front of another with red text. However, this feature
was broken since both tables had a background, so the underlying one
was not visible at all.
Therefore, I'm also removing the background of the table at the front.
Note that these tests come in pairs that just switch which one is in
front, so no functionality is lost.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This test was failing on all browsers because before the paragraph
"Test passes if there is a filled green square and *no red*" was getting
styled with some unnecessary CSS which is not present in the reference.
Removing this CSS which is irrelevant to the actual table being tested
fixes the problem.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
For a table wrapper in collapsed-borders mode we were just halving the
border widths from the computed style. However, it needs to actually
receive half of the resulting collapsed border, which can be bigger.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
We were previously splitting collapsed borders into two halves, and then
paint each one as part of the corresponding cell. This looked wrong when
the border style wasn't solid, or when a cell spanned multiple tracks
and the border wasn't the same for all of them.
Now the borders of a table wrapper, table grid or table cell aren't
painted in collapsed borders mode. Instead, the resulting collapsed
borders are painted on their own.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
We were previously using the same style and color for two collapsed
borders sharing a coordinate. Now such a line of collapsed borders can
be piecewise and have different colors and styles.
This still doesn't add support for piecewise border widths.
Also, since we are currently painting borders as part of the table and
cell boxes, and a box side can't have a piecewise border, this patch
only really works when:
- There aren't spanning cells
- The table has no assigned border (only the cells and tracks have it)
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This is still not the right approach, because we are not painting
collapsed borders as a single thing. Instead, we are splitting them
into two halves and paint each half on a different cell. This only
looks good for solid borders.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
A table cell with `width: auto` in fixed layout will now have an outer
min-content width of zero, even if it has borders or padding. In a way,
this is like allowing the content-box width to become negative.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
When computing the ascent and descent in an inline formatting context,
we weren't taking into account that app units have precision limitations.
Therefore, in some cases we were getting a line height that was slightly
taller than the value specified in `line-height`.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
More details might be needed to fully support the feature, but this
covers the basic functionality.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This adds initial support for table captions. To do this, the idea of
the table wrapper becomes a bit more concrete. Even so, the wrapper is
still reponsible for allocating space for the grid's border and padding,
as those properties are specified on the wrapper and not grid in CSS.
In order to account for this weirdness of HTML/CSS captions and grid are
now laid out and placed with a negative offset in the table wrapper
content rect.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
The attribute was only taken into account on columns that are immediate
children of tables, and on column groups. It was ignored on columns
within column groups.
This patch moves the logic into a helper function that is then called
from the three consumers.
This change adds a very simple implementation of `border-collapse` for
tables. No harmonization or merging is done at all for borders. Instead,
the largest border for every continuous border sets the size. Instead of
merging different border styles, they are squashed to half size -- which
isn't great, but ensures appropriate positioning.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
A sequence of whitespace shouldn't generate an anonymous table row/cell,
but we can't just throw away the leading whitespace, because afterwards
we may encounter some other content, and then the leading whitespace
should appear in the cell (noticeable with e.g. `white-space: pre`).
The old logic was assuming that all whitespace was a break opportunity,
and that no newlines would be preserved.
Note that text shaping considers the advance of a newline to be the same
as a space. This was problematic because if we have a segment with a
preserved space and newline, only the advance of the space should
contrinute to the size of the block container. Therefore, I'm changing
the breaker logic in other to have newline characters in their own
segment.
Then glyph_run_is_whitespace_ending_with_preserved_newline can just be
renamed to glyph_run_is_preserved_newline.
This patch is still not perfect because it doesn't check allow_wrap(),
so `nowrap` is treated like `normal`, and `pre-wrap` like `pre`.
Put table cell content fragments into a hieararchy of fragments that
include their table row and table row group fragments. This ensures that
things like relative positioning and transforms set on rows and row
groups properly affect cells and cell content.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Fix size of tables in flow layout
The contents of a table can make it bigger than what we would expect
from its 'width', 'min-width', 'height' and ' min-height' properties.
Also, 'width: auto' doesn't stretch it to fill the containing block.
We had to refactor the resolution of margins to happen after layout,
otherwise 'auto' margins wouldn't align correctly.
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
* Feedback
* Consistently use `containing_block_for_table` in table layout
* Update test result
---------
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This change adds a version of row height distribution that follows the
distribtuion algorithm used for tables in Blink's LayoutNG. This is just
an intermediate step toward implementing a distribution algorithm for
both rows and columns more similar to Layout NG.
The CSS Table 3 specification is often wrong with regard to web
compatability, which is why we have abandoned it in favor of the Layout
NG algorithm for row height distribution. this work.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This adds support for table rows, columns, rowgroups and colgroups.
There are few additions here:
1. The createion of fragments, which allows script queries and hit
testing to work properly. These fragments are empty as all cells are
still direct descendants of the table fragment.
2. Properly handling size information from tracks and track groups as
well as frustrating rules about reordering rowgroups.
3. Painting a background seemlessly across track groups and groups. This
is a thing that isn't done in legacy layout (nor WebKit)!
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This implements a very naive row height allocation approach. It has just
enough to implement `vertical-align` in table cells. Rowspanned cells
get enough space for their content, with the extra space necessary being
allocated to the last row. There's still a lot missing here, including
proper distribution of row height to rowspanned cells.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This adds support for table `border-spacing` property. Note that we do
not yet support the collapsed border model.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* layout: Implement computation of table column widths
This change implements the various steps of table column width
computation, ignoring features that don't exist yet (such as separated
borders, column elements, and colgroups).
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Fix an issue with the assignment of column percent width
* Respond to review comments
---------
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Replaced elements should never be able to have a layout internal
display, according to the specification. This change makes it so that
the used value of replaced element's display is always inline, as the
specification says.
* layout: Add *very* basic support for table layout
This is the first step to proper table layout. It implements a naive
layout algorithm, notably only taking into account the preferred widths
of the first table row. Still, it causes some float tests to start
passing, so turn on the `layout.tables.enabled` preference for those
directories.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Address review comments
* Fix a crash with rowspan=0
* Turn on pref and update results for `/css/css-tables` and `/css/CSS2/tables`
---------
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
