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LibWeb: Add border conflict resolution with rowgroup
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parent
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commit
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4 changed files with 157 additions and 2 deletions
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@ -8,6 +8,7 @@
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/HTMLTableCellElement.h>
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#include <LibWeb/HTML/HTMLTableColElement.h>
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#include <LibWeb/HTML/HTMLTableRowElement.h>
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#include <LibWeb/Layout/BlockFormattingContext.h>
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#include <LibWeb/Layout/Box.h>
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#include <LibWeb/Layout/InlineFormattingContext.h>
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@ -1025,6 +1026,7 @@ TableFormattingContext::BorderConflictFinder::BorderConflictFinder(TableFormatti
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: m_context(context)
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{
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collect_conflicting_col_elements();
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collect_conflicting_row_group_elements();
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}
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void TableFormattingContext::BorderConflictFinder::collect_conflicting_col_elements()
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@ -1047,11 +1049,29 @@ void TableFormattingContext::BorderConflictFinder::collect_conflicting_col_eleme
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}
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}
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void TableFormattingContext::BorderConflictFinder::collect_conflicting_row_group_elements()
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{
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m_row_group_elements_by_index.resize(m_context->m_rows.size());
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size_t current_row_index = 0;
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for_each_child_box_matching(m_context->table_box(), is_table_row_group, [&](auto& row_group_box) {
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auto start_row_index = current_row_index;
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size_t row_count = 0;
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for_each_child_box_matching(row_group_box, is_table_row, [&](auto&) {
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++row_count;
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});
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for_each_child_box_matching(row_group_box, is_table_row, [&](auto&) {
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m_row_group_elements_by_index[current_row_index] = RowGroupInfo {
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.row_group = &row_group_box, .start_index = start_row_index, .row_count = row_count
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};
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++current_row_index;
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return IterationDecision::Continue;
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});
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});
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}
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Vector<TableFormattingContext::ConflictingEdge> TableFormattingContext::BorderConflictFinder::conflicting_edges(
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Cell const& cell, TableFormattingContext::ConflictingSide edge) const
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{
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// FIXME: Conflicting elements can be cells, rows, row groups, columns, column groups, and the table itself,
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// but we only consider cells, rows, 'col' elements in a 'colgroup' and the table itself for now.
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Vector<ConflictingEdge> result = {};
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if (cell.column_index >= cell.column_span && edge == ConflictingSide::Left) {
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auto maybe_cell_to_left = m_context->m_cells_by_coordinate[cell.row_index][cell.column_index - cell.column_span];
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@ -1089,6 +1109,25 @@ Vector<TableFormattingContext::ConflictingEdge> TableFormattingContext::BorderCo
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if (cell.row_index + cell.row_span < m_context->m_rows.size() && edge == ConflictingSide::Bottom) {
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result.append({ m_context->m_rows[cell.row_index + cell.row_span].box, ConflictingSide::Top });
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}
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auto const& maybe_row_group = m_row_group_elements_by_index[cell.row_index];
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if (maybe_row_group.has_value() && cell.row_index == maybe_row_group->start_index && edge == ConflictingSide::Top) {
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result.append({ maybe_row_group->row_group, ConflictingSide::Top });
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}
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if (cell.row_index >= cell.row_span) {
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auto const& maybe_row_group_above = m_row_group_elements_by_index[cell.row_index - cell.row_span];
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if (maybe_row_group_above.has_value() && cell.row_index == maybe_row_group_above->start_index + maybe_row_group_above->row_count && edge == ConflictingSide::Top) {
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result.append({ maybe_row_group_above->row_group, ConflictingSide::Bottom });
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}
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}
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if (maybe_row_group.has_value() && cell.row_index == maybe_row_group->start_index + maybe_row_group->row_count - 1 && edge == ConflictingSide::Bottom) {
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result.append({ maybe_row_group->row_group, ConflictingSide::Bottom });
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}
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if (cell.row_index + cell.row_span < m_row_group_elements_by_index.size()) {
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auto const& maybe_row_group_below = m_row_group_elements_by_index[cell.row_index + cell.row_span];
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if (maybe_row_group_below.has_value() && cell.row_index + cell.row_span == maybe_row_group_below->start_index && edge == ConflictingSide::Bottom) {
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result.append({ maybe_row_group_below->row_group, ConflictingSide::Top });
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}
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}
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if (m_col_elements_by_index[cell.column_index] && edge == ConflictingSide::Left) {
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result.append({ m_col_elements_by_index[cell.column_index], ConflictingSide::Left });
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}
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@ -1115,10 +1154,16 @@ Vector<TableFormattingContext::ConflictingEdge> TableFormattingContext::BorderCo
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}
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if (cell.column_index == 0 && edge == ConflictingSide::Left) {
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result.append({ m_context->m_rows[cell.row_index].box, ConflictingSide::Left });
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if (m_row_group_elements_by_index[cell.row_index].has_value()) {
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result.append({ m_row_group_elements_by_index[cell.row_index]->row_group, ConflictingSide::Left });
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}
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result.append({ &m_context->table_box(), ConflictingSide::Left });
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}
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if (cell.column_index == m_context->m_columns.size() - 1 && edge == ConflictingSide::Right) {
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result.append({ m_context->m_rows[cell.row_index].box, ConflictingSide::Right });
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if (m_row_group_elements_by_index[cell.row_index].has_value()) {
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result.append({ m_row_group_elements_by_index[cell.row_index]->row_group, ConflictingSide::Right });
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}
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result.append({ &m_context->table_box(), ConflictingSide::Right });
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}
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return result;
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