a4bc7e2d96
Normally we don't layout position:absolute elements until after the parent formatting context has assigned dimensions to the current formatting context's root box. However, some of our parent contexts (especially FFC) don't do this reliably, which makes position:absolute children have 0x0 dimensions. Hack this for now by making ~BFC() pretend that the parent assigned dimensions if it hadn't done it already.
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Vector.h>
|
|
#include <LibWeb/Forward.h>
|
|
#include <LibWeb/Layout/BlockContainer.h>
|
|
#include <LibWeb/Layout/FormattingContext.h>
|
|
|
|
namespace Web::Layout {
|
|
|
|
// https://www.w3.org/TR/css-display/#block-formatting-context
|
|
class BlockFormattingContext : public FormattingContext {
|
|
public:
|
|
explicit BlockFormattingContext(BlockContainer&, FormattingContext* parent);
|
|
~BlockFormattingContext();
|
|
|
|
virtual void run(Box&, LayoutMode) override;
|
|
|
|
bool is_initial() const;
|
|
|
|
auto const& left_side_floats() const { return m_left_floats; }
|
|
auto const& right_side_floats() const { return m_right_floats; }
|
|
|
|
static float compute_theoretical_height(Box const&);
|
|
void compute_width(Box&);
|
|
|
|
// https://www.w3.org/TR/css-display/#block-formatting-context-root
|
|
BlockContainer& root() { return static_cast<BlockContainer&>(context_box()); }
|
|
BlockContainer const& root() const { return static_cast<BlockContainer const&>(context_box()); }
|
|
|
|
virtual void parent_context_did_dimension_child_root_box() override;
|
|
|
|
static void compute_height(Box&);
|
|
|
|
void add_absolutely_positioned_box(Box& box) { m_absolutely_positioned_boxes.append(box); }
|
|
|
|
protected:
|
|
void compute_position(Box&);
|
|
|
|
private:
|
|
virtual bool is_block_formatting_context() const final { return true; }
|
|
|
|
void compute_width_for_floating_box(Box&);
|
|
|
|
void compute_width_for_block_level_replaced_element_in_normal_flow(ReplacedBox&);
|
|
|
|
void layout_initial_containing_block(LayoutMode);
|
|
|
|
void layout_block_level_children(BlockContainer&, LayoutMode);
|
|
void layout_inline_children(BlockContainer&, LayoutMode);
|
|
|
|
void compute_vertical_box_model_metrics(Box& child_box, BlockContainer const& containing_block);
|
|
void place_block_level_element_in_normal_flow_horizontally(Box& child_box, BlockContainer const&);
|
|
void place_block_level_element_in_normal_flow_vertically(Box& child_box, BlockContainer const&);
|
|
|
|
void layout_floating_child(Box& child, BlockContainer const& containing_block);
|
|
|
|
void apply_transformations_to_children(Box&);
|
|
|
|
enum class FloatSide {
|
|
Left,
|
|
Right,
|
|
};
|
|
|
|
struct FloatSideData {
|
|
Vector<Box&> boxes;
|
|
float y_offset { 0 };
|
|
};
|
|
|
|
FloatSideData m_left_floats;
|
|
FloatSideData m_right_floats;
|
|
|
|
Vector<Box&> m_absolutely_positioned_boxes;
|
|
|
|
bool m_was_notified_after_parent_dimensioned_my_root_box { false };
|
|
};
|
|
|
|
}
|