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LibWeb: Add support for horizontal margins of grid items in GFC

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Aliaksandr Kalenik 2023-06-08 00:54:24 +03:00 • committed by Andreas Kling
parent cbe5aeb917
commit 775742b35d
3 changed files with 193 additions and 8 deletions
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45
Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
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@ -1367,14 +1367,35 @@ void GridFormattingContext::resolve_grid_item_widths()
box_state.border_left = border_left;
box_state.border_right = border_right;
auto const& computed_width = item.box().computed_values().width();
auto const& computed_values = item.box().computed_values();
auto const& computed_width = computed_values.width();
auto try_compute_width = [&](CSSPixels a_width) {
CSSPixels width = a_width;
auto underflow_px = containing_block_width - width - box_state.border_left - box_state.border_right - box_state.padding_left - box_state.padding_right - box_state.margin_left - box_state.margin_right;
if (computed_values.margin().left().is_auto() && computed_values.margin().right().is_auto()) {
auto half_of_the_underflow = underflow_px / 2;
box_state.margin_left = half_of_the_underflow;
box_state.margin_right = half_of_the_underflow;
} else if (computed_values.margin().left().is_auto()) {
box_state.margin_left = underflow_px;
} else if (computed_values.margin().right().is_auto()) {
box_state.margin_right = underflow_px;
} else if (computed_values.width().is_auto()) {
width += underflow_px;
}
return width;
};
CSSPixels used_width;
if (computed_width.is_auto())
used_width = (containing_block_width - box_state.border_left - box_state.border_right - box_state.padding_left - box_state.padding_right);
else if (computed_width.is_fit_content())
used_width = calculate_fit_content_width(item.box(), get_available_space_for_item(item));
else
used_width = computed_width.to_px(grid_container(), containing_block_width);
if (computed_width.is_auto()) {
used_width = try_compute_width(calculate_fit_content_width(item.box(), get_available_space_for_item(item)));
} else if (computed_width.is_fit_content()) {
used_width = try_compute_width(calculate_fit_content_width(item.box(), get_available_space_for_item(item)));
} else {
used_width = try_compute_width(computed_width.to_px(grid_container(), containing_block_width));
}
box_state.set_content_width(used_width);
}
}
@ -1435,6 +1456,11 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
box_state.padding_bottom = computed_values.padding().bottom().to_px(grid_container(), 0);
box_state.padding_left = computed_values.padding().left().to_px(grid_container(), 0);
box_state.margin_top = computed_values.margin().top().to_px(grid_container(), 0);
box_state.margin_right = computed_values.margin().right().to_px(grid_container(), 0);
box_state.margin_bottom = computed_values.margin().bottom().to_px(grid_container(), 0);
box_state.margin_left = computed_values.margin().left().to_px(grid_container(), 0);
box_state.border_top = computed_values.border_top().width;
box_state.border_right = computed_values.border_right().width;
box_state.border_bottom = computed_values.border_bottom().width;
@ -1476,7 +1502,10 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
y_end += m_grid_rows_and_gaps[i].base_size;
}
child_box_state.offset = { x_start + child_box_state.border_left + child_box_state.padding_left, y_start + child_box_state.border_top + child_box_state.padding_top };
child_box_state.offset = {
x_start + child_box_state.border_left + child_box_state.padding_left + child_box_state.margin_left,
y_start + child_box_state.border_top + child_box_state.padding_top + child_box_state.margin_top
};
auto available_space_for_children = AvailableSpace(AvailableSize::make_definite(child_box_state.content_width()), AvailableSize::make_definite(child_box_state.content_height()));
if (auto independent_formatting_context = layout_inside(child_box, LayoutMode::Normal, available_space_for_children))