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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Utf8View.h>
#include <LibWeb/DOM/Text.h>
#include <LibWeb/Layout/Node.h>
namespace Web::Layout {
class LineBoxFragment;
class TextNode : public Node {
public:
TextNode(DOM::Document&, DOM::Text&);
virtual ~TextNode() override;
const DOM::Text& dom_node() const { return static_cast<const DOM::Text&>(*Node::dom_node()); }
const String& text_for_rendering() const { return m_text_for_rendering; }
virtual void paint_fragment(PaintContext&, const LineBoxFragment&, PaintPhase) const override;
virtual void split_into_lines(InlineFormattingContext&, LayoutMode) override;
struct Chunk {
Utf8View view;
size_t start { 0 };
size_t length { 0 };
bool has_breaking_newline { false };
bool is_all_whitespace { false };
};
class ChunkIterator {
public:
ChunkIterator(StringView const& text, LayoutMode, bool wrap_lines, bool respect_linebreaks);
Optional<Chunk> next();
private:
Optional<Chunk> try_commit_chunk(Utf8View::Iterator const& start, Utf8View::Iterator const& end, bool has_breaking_newline, bool must_commit = false);
const LayoutMode m_layout_mode;
const bool m_wrap_lines;
const bool m_respect_linebreaks;
bool m_last_was_space { false };
bool m_last_was_newline { false };
Utf8View m_utf8_view;
Utf8View::Iterator m_iterator;
};
void compute_text_for_rendering(bool collapse, bool previous_is_empty_or_ends_in_whitespace);
private:
virtual bool is_text_node() const final { return true; }
virtual bool wants_mouse_events() const override;
virtual void handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
virtual void handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
virtual void handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
void split_into_lines_by_rules(InlineFormattingContext&, LayoutMode, bool do_collapse, bool do_wrap_lines, bool do_respect_linebreaks);
void paint_cursor_if_needed(PaintContext&, const LineBoxFragment&) const;
void paint_text_decoration(Gfx::Painter&, LineBoxFragment const&) const;
virtual void paint(PaintContext&, PaintPhase) override;
String m_text_for_rendering;
};
template<>
inline bool Node::fast_is<TextNode>() const { return is_text_node(); }
}
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