RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 12:37:45 +00:00
Code Issues Activity Actions

LibWeb: Check column or row size attributes for constrainedness

Browse source 
Better aligns our implementation with the specification, which requires
that columns and groups of columns are checked too.
This commit is contained in:
Andi Gallo 2023-07-15 01:12:10 +00:00 • committed by Andreas Kling
parent 19a26533a9
commit 28509e3edd
4 changed files with 87 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

32
Tests/LibWeb/Layout/expected/table/width-distribution-and-constrained-columns-size-on-col.txt Normal file
View file

@ -0,0 +1,32 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x27.46875 children: not-inline
TableWrapper <(anonymous)> at (8,8) content-size 420x27.46875 [BFC] children: not-inline
Box <table> at (9,9) content-size 418x25.46875 table-box [TFC] children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <colgroup> (not painted) table-column-group children: not-inline
BlockContainer <col> (not painted) children: not-inline
BlockContainer <col> (not painted) children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tbody> at (9,9) content-size 412x21.46875 table-row-group children: not-inline
Box <tr> at (11,11) content-size 412x21.46875 table-row children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (13,13) content-size 14.265625x17.46875 table-cell [BFC] children: inline
line 0 width: 14.265625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [13,13 14.265625x17.46875]
"A"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (33.265625,13) content-size 389.734375x17.46875 table-cell [BFC] children: inline
line 0 width: 9.34375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [33.265625,13 9.34375x17.46875]
"B"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>

10
Tests/LibWeb/Layout/input/table/width-distribution-and-constrained-columns-size-on-col.html Normal file
View file

@ -0,0 +1,10 @@
<table style="width:420px;border:1px solid">
<colgroup>
<col style="width:1px">
<col>
</colgroup>
<tr>
<td style="border:1px solid">A</td>
<td style="border:1px solid">B</td>
</tr>
</table>

50
Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp
View file

@ -54,6 +54,16 @@ static inline bool is_table_row(Box const& box)
return box.display().is_table_row();
}
static inline bool is_table_column_group(Box const& box)
{
return box.display().is_table_column_group();
}
static inline bool is_table_column(Box const& box)
{
return box.display().is_table_column();
}
template<typename Matcher, typename Callback>
static void for_each_child_box_matching(Box const& parent, Matcher matcher, Callback callback)
{
@ -173,16 +183,31 @@ void TableFormattingContext::calculate_row_column_grid(Box const& box)
}
}
void TableFormattingContext::compute_cell_measures(AvailableSpace const& available_space)
void TableFormattingContext::compute_constrainedness()
{
// Implements https://www.w3.org/TR/css-tables-3/#computing-cell-measures.
auto const& containing_block = m_state.get(*table_wrapper().containing_block());
auto table_width_is_auto = table_box().computed_values().width().is_auto();
// Definition of constrainedness: https://www.w3.org/TR/css-tables-3/#constrainedness
size_t column_index = 0;
for_each_child_box_matching(table_box(), is_table_column_group, [&](auto& column_group_box) {
for_each_child_box_matching(column_group_box, is_table_column, [&](auto& column_box) {
auto const& computed_values = column_box.computed_values();
if (!computed_values.width().is_auto() && !computed_values.width().is_percentage()) {
m_columns[column_index].is_constrained = true;
}
auto const& col_node = static_cast<HTML::HTMLTableColElement const&>(*column_box.dom_node());
unsigned span = col_node.attribute(HTML::AttributeNames::span).to_uint().value_or(1);
column_index += span;
});
});
for (auto& row : m_rows) {
auto const& computed_values = row.box->computed_values();
if (!computed_values.height().is_auto() && !computed_values.height().is_percentage()) {
row.is_constrained = true;
}
}
for (auto& cell : m_cells) {
auto const& computed_values = cell.box->computed_values();
// Definition of constrainedness: https://www.w3.org/TR/css-tables-3/#constrainedness
// FIXME: Consider table-column-group and table-column too.
if (!computed_values.width().is_auto() && !computed_values.width().is_percentage()) {
m_columns[cell.column_index].is_constrained = true;
}
@ -190,6 +215,19 @@ void TableFormattingContext::compute_cell_measures(AvailableSpace const& availab
if (!computed_values.height().is_auto() && !computed_values.height().is_percentage()) {
m_rows[cell.row_index].is_constrained = true;
}
}
}
void TableFormattingContext::compute_cell_measures(AvailableSpace const& available_space)
{
// Implements https://www.w3.org/TR/css-tables-3/#computing-cell-measures.
auto const& containing_block = m_state.get(*table_wrapper().containing_block());
auto table_width_is_auto = table_box().computed_values().width().is_auto();
compute_constrainedness();
for (auto& cell : m_cells) {
auto const& computed_values = cell.box->computed_values();
if (computed_values.width().is_percentage()) {
m_columns[cell.column_index].has_percentage_width = true;

1
Userland/Libraries/LibWeb/Layout/TableFormattingContext.h
View file

@ -38,6 +38,7 @@ private:
CSSPixels run_caption_layout(LayoutMode, CSS::CaptionSide);
CSSPixels compute_capmin();
void calculate_row_column_grid(Box const&);
void compute_constrainedness();
void compute_cell_measures(AvailableSpace const& available_space);
template<class RowOrColumn>
void initialize_table_measures();