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LibWeb: Start implementation of CSS Table 3 spec

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Here I try to address bug where content of table overflows
it's width (hacker news is an example of such site) by
reimplementing some parts of table formatting context.

Now TFC implements first steps of:
https://www.w3.org/TR/css-tables-3/#table-layout-algorithm
but column width and row height distribution steps are
still very incomplete.
This commit is contained in:
Aliaksandr Kalenik 2022-12-04 22:39:38 +03:00 • committed by Andreas Kling
parent 4e3b965d7f
commit 1c6783cd7e
4 changed files with 260 additions and 190 deletions
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38
Userland/Libraries/LibWeb/Layout/TableFormattingContext.h
View file

@ -11,13 +11,6 @@
namespace Web::Layout {
struct ColumnWidth {
float min { 0 };
float max { 0 };
float used { 0 };
bool is_auto { true };
};
class TableFormattingContext final : public BlockFormattingContext {
public:
explicit TableFormattingContext(LayoutState&, BlockContainer const&, FormattingContext* parent);
@ -27,10 +20,37 @@ public:
virtual float automatic_content_height() const override;
private:
void calculate_column_widths(Box const& row, CSS::Length const& table_width, Vector<ColumnWidth>& column_widths, AvailableSpace const&);
void layout_row(Box const& row, Vector<ColumnWidth>& column_widths, AvailableSpace const&);
void calculate_row_column_grid(Box const&);
void compute_table_measures();
void compute_table_width(float&);
void distribute_width_to_columns(float extra_width);
void determine_intrisic_size_of_table_container(AvailableSpace const& available_space);
float m_automatic_content_height { 0 };
struct Column {
float left_offset { 0 };
float min_width { 0 };
float max_width { 0 };
float used_width { 0 };
};
struct Row {
Box& box;
float used_width { 0 };
};
struct Cell {
Box& box;
size_t column_index;
size_t row_index;
size_t column_span;
size_t raw_span;
};
Vector<Cell> m_cells;
Vector<Column> m_columns;
Vector<Row> m_rows;
};
}