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layout: Add support for table border-spacing (#31166)
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>
This commit is contained in:
Martin Robinson
GitHub
parent
a5c512808a
commit
1876b49251
39 changed files with 67 additions and 448 deletions
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@ -5,6 +5,7 @@
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use app_units::{Au, MAX_AU};
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use euclid::num::Zero;
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use log::warn;
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use style::computed_values::border_collapse::T as BorderCollapse;
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use style::logical_geometry::WritingMode;
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use style::values::computed::{CSSPixelLength, Length, LengthOrAuto, Percentage};
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use style::values::generics::length::GenericLengthPercentageOrAuto::{Auto, LengthPercentage};
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@ -335,6 +336,7 @@ impl<'a> TableLayout<'a> {
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) -> (usize, Vec<CellOrColumnMeasure>) {
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let mut next_span_n = usize::MAX;
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let mut new_content_sizes_for_columns = Vec::new();
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let border_spacing = self.table.border_spacing();
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for column_index in 0..self.table.size.width {
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let old_column_measure = &old_column_measures[column_index];
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@ -368,7 +370,6 @@ impl<'a> TableLayout<'a> {
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},
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);
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// TODO: Take into account border spacing.
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let old_column_content_size = old_column_measure.content_sizes;
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// > **min-content width of a column based on cells of span up to N (N > 1)**
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@ -388,8 +389,7 @@ impl<'a> TableLayout<'a> {
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// > 2. Define the baseline border spacing as the sum of the horizontal
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// > border-spacing for any columns spanned by the cell, other than the one in
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// > which the cell originates.
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//
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// TODO: Take into account border spacing.
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let baseline_border_spacing = border_spacing.inline * (n as i32 - 1);
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// > 3. The contribution of the cell is the sum of:
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// > a. the min-content width of the column based on cells of span up to N-1
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@ -407,8 +407,6 @@ impl<'a> TableLayout<'a> {
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// > min-content width and the baseline border spacing, clamped to be
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// > at least 0 and at most the difference between the baseline
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// > max-content width and the baseline min-content width
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//
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// TODO: Take into account border spacing.
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let old_content_size_difference =
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old_column_content_size.max_content - old_column_content_size.min_content;
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let baseline_difference = baseline_min_content_width - baseline_max_content_width;
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@ -419,7 +417,8 @@ impl<'a> TableLayout<'a> {
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b = 0.0;
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}
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let b = (cell_inline_content_sizes.min_content -
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baseline_content_sizes.min_content)
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baseline_content_sizes.min_content -
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baseline_border_spacing)
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.clamp_between_extremums(Au::zero(), Some(baseline_difference))
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.scale_by(b);
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@ -430,7 +429,8 @@ impl<'a> TableLayout<'a> {
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// > max-content width and baseline border spacing, or 0 if this is
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// > negative
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let c = (cell_inline_content_sizes.min_content -
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baseline_content_sizes.max_content)
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baseline_content_sizes.max_content -
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baseline_border_spacing)
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.min(Au::zero())
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.scale_by(
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old_column_content_size.max_content.to_f32_px() /
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@ -454,7 +454,7 @@ impl<'a> TableLayout<'a> {
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// > border-spacing for any columns spanned by the cell, other than the one in
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// > which the cell originates.
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//
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// TODO: Take into account. border spacing.
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// This is calculated above for min-content width.
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// > 3. The contribution of the cell is the sum of:
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// > a. the max-content width of the column based on cells of span up to N-1
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@ -469,10 +469,9 @@ impl<'a> TableLayout<'a> {
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// > 2. the outer max-content width of the cell minus the baseline
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// > max-content width and the baseline border spacing, or 0 if this
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// > is negative
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//
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// TODO: Take into account. border spacing.
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let b_2 = (cell_inline_content_sizes.max_content -
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baseline_content_sizes.max_content)
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baseline_content_sizes.max_content -
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baseline_border_spacing)
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.min(Au::zero());
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let b = b_2.scale_by(b_1);
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let new_column_max_content_width = a + b + c;
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@ -542,12 +541,17 @@ impl<'a> TableLayout<'a> {
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// https://drafts.csswg.org/css-tables/#gridmax:
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// > The row/column-grid width maximum (GRIDMAX) width is the sum of the max-content width of
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// > all the columns plus cell spacing or borders.
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let grid_min_and_max = self
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let mut grid_min_and_max = self
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.column_measures
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.iter()
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.fold(ContentSizes::zero(), |result, measure| {
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result + measure.content_sizes
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});
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let border_spacing = self.table.border_spacing();
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let inline_border_spacing = border_spacing.inline * (self.table.size.width as i32 + 1);
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grid_min_and_max.min_content += inline_border_spacing;
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grid_min_and_max.max_content += inline_border_spacing;
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self.pbm = self.table.style.padding_border_margin(containing_block);
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let content_box_size = self
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@ -583,7 +587,10 @@ impl<'a> TableLayout<'a> {
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.max(used_min_width_of_table),
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};
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self.assignable_width = used_width_of_table;
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// > The assignable table width is the used width of the table minus the total horizontal
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// > border spacing (if any). This is the width that we will be able to allocate to the
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// > columns.
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self.assignable_width = used_width_of_table - inline_border_spacing;
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}
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/// Distribute width to columns, performing step 2.4 of table layout from
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@ -972,10 +979,11 @@ impl<'a> TableLayout<'a> {
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assert_eq!(self.table.size.height, self.row_sizes.len());
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assert_eq!(self.table.size.width, self.distributed_column_widths.len());
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let border_spacing = self.table.border_spacing();
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let mut fragments = Vec::new();
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let mut row_offset = Au::zero();
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let mut row_offset = border_spacing.block;
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for row_index in 0..self.table.size.height {
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let mut column_offset = Au::zero();
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let mut column_offset = border_spacing.inline;
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let row_size = self.row_sizes[row_index];
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for column_index in 0..self.table.size.width {
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@ -1010,10 +1018,10 @@ impl<'a> TableLayout<'a> {
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positioning_context,
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)));
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column_offset += column_size;
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column_offset += column_size + border_spacing.inline;
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}
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row_offset += row_size;
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row_offset += row_size + border_spacing.block;
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}
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(fragments, row_offset)
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@ -1021,6 +1029,18 @@ impl<'a> TableLayout<'a> {
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}
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impl Table {
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fn border_spacing(&self) -> LogicalVec2<Au> {
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if self.style.clone_border_collapse() == BorderCollapse::Collapse {
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LogicalVec2::zero()
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} else {
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let border_spacing = self.style.clone_border_spacing();
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LogicalVec2 {
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inline: border_spacing.horizontal(),
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block: border_spacing.vertical(),
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}
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}
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}
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fn inline_content_sizes_for_cell_at(
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&self,
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coords: TableSlotCoordinates,
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