dc681913e8
A lot of this is quite ugly, but it should only be so until I remove Length::Type::Percentage entirely. (Which should happen later in this PR, otherwise, yell at me!) For now, a lot of things have to be resolved twice, first from a LengthPercentage to a Length, and then from a Length to a pixel one.
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/Layout/Box.h>
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#include <LibWeb/Layout/InlineFormattingContext.h>
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#include <LibWeb/Layout/TableBox.h>
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#include <LibWeb/Layout/TableCellBox.h>
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#include <LibWeb/Layout/TableFormattingContext.h>
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#include <LibWeb/Layout/TableRowBox.h>
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#include <LibWeb/Layout/TableRowGroupBox.h>
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namespace Web::Layout {
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TableFormattingContext::TableFormattingContext(BlockContainer& block_container, FormattingContext* parent)
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: BlockFormattingContext(block_container, parent)
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{
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}
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TableFormattingContext::~TableFormattingContext()
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{
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}
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void TableFormattingContext::run(Box& box, LayoutMode)
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{
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compute_width(box);
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float total_content_width = 0;
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float total_content_height = 0;
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box.for_each_child_of_type<TableRowGroupBox>([&](auto& row_group_box) {
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compute_width(row_group_box);
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auto column_count = row_group_box.column_count();
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Vector<float> column_widths;
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column_widths.resize(column_count);
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row_group_box.template for_each_child_of_type<TableRowBox>([&](auto& row) {
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calculate_column_widths(row, column_widths);
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});
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float content_width = 0;
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float content_height = 0;
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row_group_box.template for_each_child_of_type<TableRowBox>([&](auto& row) {
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row.set_offset(0, content_height);
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layout_row(row, column_widths);
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content_width = max(content_width, row.width());
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content_height += row.height();
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});
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if (row_group_box.computed_values().width().is_length() && row_group_box.computed_values().width().length().is_auto())
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row_group_box.set_width(content_width);
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row_group_box.set_height(content_height);
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row_group_box.set_offset(0, total_content_height);
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total_content_height += content_height;
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total_content_width = max(total_content_width, row_group_box.width());
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});
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if (box.computed_values().width().is_length() && box.computed_values().width().length().is_auto())
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box.set_width(total_content_width);
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// FIXME: This is a total hack, we should respect the 'height' property.
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box.set_height(total_content_height);
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}
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void TableFormattingContext::calculate_column_widths(Box& row, Vector<float>& column_widths)
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{
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size_t column_index = 0;
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auto* table = row.first_ancestor_of_type<TableBox>();
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bool use_auto_layout = !table || (table->computed_values().width().is_length() && table->computed_values().width().length().is_undefined_or_auto());
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row.for_each_child_of_type<TableCellBox>([&](auto& cell) {
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compute_width(cell);
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if (use_auto_layout) {
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(void)layout_inside(cell, LayoutMode::OnlyRequiredLineBreaks);
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} else {
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(void)layout_inside(cell, LayoutMode::Default);
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}
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column_widths[column_index] = max(column_widths[column_index], cell.width());
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column_index += cell.colspan();
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});
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}
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void TableFormattingContext::layout_row(Box& row, Vector<float>& column_widths)
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{
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size_t column_index = 0;
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float tallest_cell_height = 0;
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float content_width = 0;
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auto* table = row.first_ancestor_of_type<TableBox>();
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bool use_auto_layout = !table || (table->computed_values().width().is_length() && table->computed_values().width().length().is_undefined_or_auto());
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row.for_each_child_of_type<TableCellBox>([&](auto& cell) {
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cell.set_offset(row.effective_offset().translated(content_width, 0));
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// Layout the cell contents a second time, now that we know its final width.
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if (use_auto_layout) {
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(void)layout_inside(cell, LayoutMode::OnlyRequiredLineBreaks);
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} else {
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(void)layout_inside(cell, LayoutMode::Default);
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}
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size_t cell_colspan = cell.colspan();
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for (size_t i = 0; i < cell_colspan; ++i)
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content_width += column_widths[column_index++];
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tallest_cell_height = max(tallest_cell_height, cell.height());
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});
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if (use_auto_layout) {
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row.set_width(content_width);
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} else {
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row.set_width(table->width());
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}
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row.set_height(tallest_cell_height);
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}
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}
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