Struct TableLayout 

pub struct TableLayout { /* private fields */ }

Table layout engine

Implementations

impl TableLayout

pub fn resolve_border_conflict( &self, border1: CollapsedBorder, border2: CollapsedBorder, ) -> CollapsedBorder

Resolve border conflicts for collapsed border model

According to CSS2.1 Section 17.6.2, when two borders collapse:

1. Hidden takes precedence over all other styles
2. None has the lowest precedence
3. Wider borders take precedence over narrower ones
4. If widths are equal, style precedence is: double > solid > dashed > dotted > ridge > outset > groove > inset
5. If width and style are equal, the border from the cell wins over the one from the row, which wins over the table

impl TableLayout

pub fn compute_fixed_widths(&self, columns: &[ColumnWidth]) -> Vec<Length>

Compute column widths using fixed layout algorithm

pub fn compute_auto_widths(&self, column_info: &[ColumnInfo]) -> Vec<Length>

Compute column widths using auto layout algorithm

This implements the CSS2.1 automatic table layout algorithm:

1. Calculate minimum and maximum width for each column based on content
2. Assign fixed widths first
3. Distribute remaining width to auto columns based on their min/max widths
4. Handle proportional widths

Algorithm details:

• Fixed columns: Use their specified width
• Proportional columns: Distribute remaining width by ratio
• Auto columns: Use content-based min/max widths
  • If space >= total max: Use max widths (no line breaking)
  • If min <= space < max: Interpolate between min and max
  • If space < min: Scale down from min (may overflow)

This matches Apache FOP’s AutoLayoutAlgorithm.java behavior.

pub fn measure_column_widths( &self, grid: &[Vec<Option<GridCell>>], col_idx: usize, ) -> (Length, Length)

Measure content widths for cells in a column Returns (min_width, max_width) for the column

pub fn update_column_info_from_grid( &self, column_info: &mut [ColumnInfo], grid: &[Vec<Option<GridCell>>], )

Update column info with measured widths from grid

pub fn distribute_colspan_widths( &self, column_info: &mut [ColumnInfo], grid: &[Vec<Option<GridCell>>], )

Handle cells with colspan in width calculation This distributes the cell’s required width across spanned columns

impl TableLayout

pub fn create_grid( &self, rows: usize, cols: usize, ) -> Vec<Vec<Option<GridCell>>>

Create table grid from rows and cells

pub fn place_cell( &self, grid: &mut [Vec<Option<GridCell>>], cell: GridCell, ) -> Result<()>

Place a cell in the grid

pub fn layout_table( &self, area_tree: &mut AreaTree, column_widths: &[Length], grid: &[Vec<Option<GridCell>>], y_offset: Length, ) -> Result<AreaId>

Layout table into area tree

impl TableLayout

pub fn new(available_width: Length) -> Self

Create a new table layout engine

pub fn with_border_spacing(self, spacing: Length) -> Self

Set border spacing

pub fn with_layout_mode(self, mode: TableLayoutMode) -> Self

Set table layout mode

pub fn with_border_collapse(self, collapse: BorderCollapse) -> Self

Set border collapse model

pub fn layout_mode(&self) -> TableLayoutMode

Get the current table layout mode

pub fn border_collapse(&self) -> BorderCollapse

Get the current border collapse model