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fc31e69f79
* layout: Add *very* basic support for table layout This is the first step to proper table layout. It implements a naive layout algorithm, notably only taking into account the preferred widths of the first table row. Still, it causes some float tests to start passing, so turn on the `layout.tables.enabled` preference for those directories. Co-authored-by: Oriol Brufau <obrufau@igalia.com> * Address review comments * Fix a crash with rowspan=0 * Turn on pref and update results for `/css/css-tables` and `/css/CSS2/tables` --------- Co-authored-by: Oriol Brufau <obrufau@igalia.com>
251 lines
8.5 KiB
Rust
251 lines
8.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Tests for proper table box tree construction.
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mod tables {
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use euclid::Vector2D;
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use layout_2020::table::{Table, TableBuilder, TableSlot, TableSlotCell, TableSlotOffset};
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fn row_lengths(table: &Table) -> Vec<usize> {
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table.slots.iter().map(|row| row.len()).collect()
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}
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fn slot_is_cell_with_id(slot: &TableSlot, id: usize) -> bool {
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match slot {
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TableSlot::Cell(cell) if cell.node_id() == id => true,
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_ => false,
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}
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}
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fn slot_is_empty(slot: &TableSlot) -> bool {
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match slot {
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TableSlot::Empty => true,
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_ => false,
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}
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}
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fn slot_is_spanned_with_offsets(slot: &TableSlot, offsets: Vec<(usize, usize)>) -> bool {
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match slot {
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TableSlot::Spanned(slot_offsets) => {
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let offsets: Vec<TableSlotOffset> = offsets
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.iter()
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.map(|offset| Vector2D::new(offset.0, offset.1))
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.collect();
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offsets == *slot_offsets
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},
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_ => false,
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}
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}
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#[test]
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fn test_empty_table() {
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let table_builder = TableBuilder::new_for_tests();
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let table = table_builder.finish();
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assert!(table.slots.is_empty())
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}
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#[test]
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fn test_simple_table() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 1));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(4, 1, 1));
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table_builder.end_row();
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![2, 2]);
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assert!(slot_is_cell_with_id(&table.slots[0][0], 1));
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assert!(slot_is_cell_with_id(&table.slots[0][1], 2));
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assert!(slot_is_cell_with_id(&table.slots[1][0], 3));
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assert!(slot_is_cell_with_id(&table.slots[1][1], 4));
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}
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#[test]
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fn test_simple_rowspan() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 1, 2));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(4, 1, 1));
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table_builder.end_row();
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![3, 3]);
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assert!(slot_is_cell_with_id(&table.slots[0][0], 1));
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assert!(slot_is_cell_with_id(&table.slots[0][1], 2));
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assert!(slot_is_cell_with_id(&table.slots[0][2], 3));
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assert!(slot_is_cell_with_id(&table.slots[1][0], 4));
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assert!(slot_is_empty(&table.slots[1][1]));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][2],
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vec![(0, 1)]
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));
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}
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#[test]
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fn test_simple_colspan() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 3, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 1, 1));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(4, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(5, 3, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(6, 1, 1));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(7, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(8, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(9, 3, 1));
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table_builder.end_row();
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![5, 5, 5]);
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assert!(slot_is_cell_with_id(&table.slots[0][0], 1));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[0][1],
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vec![(1, 0)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[0][2],
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vec![(2, 0)]
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));
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assert!(slot_is_cell_with_id(&table.slots[0][3], 2));
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assert!(slot_is_cell_with_id(&table.slots[0][4], 3));
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assert!(slot_is_cell_with_id(&table.slots[1][0], 4));
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assert!(slot_is_cell_with_id(&table.slots[1][1], 5));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][2],
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vec![(1, 0)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][3],
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vec![(2, 0)]
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));
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assert!(slot_is_cell_with_id(&table.slots[1][4], 6));
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assert!(slot_is_cell_with_id(&table.slots[2][0], 7));
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assert!(slot_is_cell_with_id(&table.slots[2][1], 8));
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assert!(slot_is_cell_with_id(&table.slots[2][2], 9));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[2][3],
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vec![(1, 0)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[2][4],
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vec![(2, 0)]
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));
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}
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#[test]
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fn test_simple_table_model_error() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 1, 2));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(4, 3, 1));
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table_builder.end_row();
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![3, 3]);
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assert!(slot_is_cell_with_id(&table.slots[0][0], 1));
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assert!(slot_is_cell_with_id(&table.slots[0][1], 2));
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assert!(slot_is_cell_with_id(&table.slots[0][2], 3));
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assert!(slot_is_cell_with_id(&table.slots[1][0], 4));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][1],
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vec![(1, 0)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][2],
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vec![(2, 0), (0, 1)]
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));
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}
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#[test]
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fn test_simple_rowspan_0() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 1, 0));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.end_row();
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table_builder.start_row();
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table_builder.end_row();
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table_builder.start_row();
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table_builder.end_row();
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![3, 3, 3, 3]);
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assert!(slot_is_empty(&table.slots[1][0]));
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assert!(slot_is_empty(&table.slots[1][1]));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[1][2],
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vec![(0, 1)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[2][2],
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vec![(0, 2)]
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));
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assert!(slot_is_spanned_with_offsets(
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&table.slots[3][2],
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vec![(0, 3)]
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));
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}
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#[test]
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fn test_incoming_rowspans() {
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let mut table_builder = TableBuilder::new_for_tests();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(1, 1, 1));
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table_builder.add_cell(TableSlotCell::mock_for_testing(2, 1, 30));
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table_builder.end_row();
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table_builder.start_row();
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table_builder.add_cell(TableSlotCell::mock_for_testing(3, 2, 1));
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table_builder.end_row();
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assert_eq!(table_builder.incoming_rowspans, vec![0, 28]);
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let table = table_builder.finish();
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assert_eq!(row_lengths(&table), vec![2, 2]);
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}
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}
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