b9c6059984
As well as correctly calculating the height of TableRowBox, this change calculates the heights of TableRowGroupBoxs also. As before, this does not correctly take into consideration the 'height' attribute. Now the horizontal layout is approximately correct for the TableRowGroupBoxs we can now see that the `layout_row` method will need updating to correctly calculate cell width across all rows, not just the current TableRowGroupBox.
132 lines
4.8 KiB
C++
132 lines
4.8 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibWeb/DOM/Node.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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#include <LibWeb/Page/Frame.h>
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namespace Web::Layout {
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TableFormattingContext::TableFormattingContext(Box& context_box, FormattingContext* parent)
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: BlockFormattingContext(context_box, 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_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_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_height += row.height();
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});
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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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});
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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_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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layout_inside(cell, LayoutMode::OnlyRequiredLineBreaks);
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} else {
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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_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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layout_inside(cell, LayoutMode::OnlyRequiredLineBreaks);
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} else {
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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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