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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Layout/Box.h>
#include <LibWeb/Layout/LineBox.h>
namespace Web::Layout {
// https://www.w3.org/TR/css-display/#block-container
class BlockContainer : public Box {
public:
BlockContainer(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
BlockContainer(DOM::Document&, DOM::Node*, CSS::ComputedValues);
virtual ~BlockContainer() override;
virtual void paint(PaintContext&, PaintPhase) override;
virtual HitTestResult hit_test(const Gfx::IntPoint&, HitTestType) const override;
BlockContainer* previous_sibling() { return verify_cast<BlockContainer>(Node::previous_sibling()); }
const BlockContainer* previous_sibling() const { return verify_cast<BlockContainer>(Node::previous_sibling()); }
BlockContainer* next_sibling() { return verify_cast<BlockContainer>(Node::next_sibling()); }
const BlockContainer* next_sibling() const { return verify_cast<BlockContainer>(Node::next_sibling()); }
template<typename Callback>
void for_each_fragment(Callback);
template<typename Callback>
void for_each_fragment(Callback) const;
virtual void split_into_lines(InlineFormattingContext&, LayoutMode) override;
bool is_scrollable() const;
const Gfx::FloatPoint& scroll_offset() const { return m_scroll_offset; }
void set_scroll_offset(const Gfx::FloatPoint&);
Vector<LineBox>& line_boxes() { return m_line_boxes; }
const Vector<LineBox>& line_boxes() const { return m_line_boxes; }
LineBox& ensure_last_line_box();
LineBox& add_line_box();
protected:
Vector<LineBox> m_line_boxes;
private:
virtual bool is_block_container() const final { return true; }
virtual bool wants_mouse_events() const override { return false; }
virtual bool handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers, int wheel_delta_x, int wheel_delta_y) override;
bool should_clip_overflow() const;
Gfx::FloatPoint m_scroll_offset;
};
template<>
inline bool Node::fast_is<BlockContainer>() const { return is_block_container(); }
template<typename Callback>
void BlockContainer::for_each_fragment(Callback callback)
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
template<typename Callback>
void BlockContainer::for_each_fragment(Callback callback) const
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
}
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