ladybird/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
martinfalisse a2ecb903af LibWeb: New start at layouting out the grid
According to the spec it's necessary to:
1. Layout the cells in the grid
2. Find the sizes of the rows and columns

Since I had started to do this backwards, and as I expand in future
commits, I take here the opportunity to start with a clean state.

The occupation_grid keeps track of which cells in the grid have been
filled out.
2022-09-14 00:09:14 +02:00

44 lines
1.7 KiB
C++

/*
* Copyright (c) 2022, Martin Falisse <mfalisse@outlook.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/DOM/Node.h>
#include <LibWeb/Layout/Box.h>
#include <LibWeb/Layout/GridFormattingContext.h>
namespace Web::Layout {
GridFormattingContext::GridFormattingContext(LayoutState& state, BlockContainer const& block_container, FormattingContext* parent)
: BlockFormattingContext(state, block_container, parent)
{
}
GridFormattingContext::~GridFormattingContext() = default;
void GridFormattingContext::run(Box const& box, LayoutMode)
{
auto should_skip_is_anonymous_text_run = [&](Box& child_box) -> bool {
if (child_box.is_anonymous() && !child_box.first_child_of_type<BlockContainer>()) {
bool contains_only_white_space = true;
child_box.for_each_in_subtree([&](auto const& node) {
if (!is<TextNode>(node) || !static_cast<TextNode const&>(node).dom_node().data().is_whitespace()) {
contains_only_white_space = false;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
if (contains_only_white_space)
return true;
}
return false;
};
Vector<Vector<bool>> occupation_grid;
Vector<bool> occupation_grid_row;
for (int column_index = 0; column_index < max((int)box.computed_values().grid_template_columns().size(), 1); column_index++)
occupation_grid_row.append(false);
for (int row_index = 0; row_index < max((int)box.computed_values().grid_template_rows().size(), 1); row_index++)
occupation_grid.append(occupation_grid_row);
}