766d816db3
Now that we build lines incrementally, we no longer need the atomic line splitting API. The new InlineLevelIterator and LineBuilder setup does have some regressions from the old behavior, but we can deal with them as we go.
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Utf8View.h>
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#include <LibWeb/DOM/Text.h>
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#include <LibWeb/Layout/Node.h>
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namespace Web::Layout {
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class LineBoxFragment;
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class TextNode : public Node {
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public:
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TextNode(DOM::Document&, DOM::Text&);
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virtual ~TextNode() override;
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const DOM::Text& dom_node() const { return static_cast<const DOM::Text&>(*Node::dom_node()); }
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const String& text_for_rendering() const { return m_text_for_rendering; }
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virtual void paint_fragment(PaintContext&, const LineBoxFragment&, PaintPhase) const override;
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struct Chunk {
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Utf8View view;
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size_t start { 0 };
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size_t length { 0 };
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bool has_breaking_newline { false };
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bool is_all_whitespace { false };
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};
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class ChunkIterator {
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public:
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ChunkIterator(StringView text, LayoutMode, bool wrap_lines, bool respect_linebreaks);
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Optional<Chunk> next();
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private:
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Optional<Chunk> try_commit_chunk(Utf8View::Iterator const& start, Utf8View::Iterator const& end, bool has_breaking_newline, bool must_commit = false);
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const LayoutMode m_layout_mode;
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const bool m_wrap_lines;
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const bool m_respect_linebreaks;
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bool m_last_was_space { false };
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bool m_last_was_newline { false };
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Utf8View m_utf8_view;
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Utf8View::Iterator m_iterator;
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};
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void compute_text_for_rendering(bool collapse, bool previous_is_empty_or_ends_in_whitespace);
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private:
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virtual bool is_text_node() const final { return true; }
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virtual bool wants_mouse_events() const override;
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virtual void handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
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virtual void handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
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virtual void handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
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void paint_cursor_if_needed(PaintContext&, const LineBoxFragment&) const;
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void paint_text_decoration(Gfx::Painter&, LineBoxFragment const&) const;
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virtual void paint(PaintContext&, PaintPhase) override;
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String m_text_for_rendering;
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};
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template<>
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inline bool Node::fast_is<TextNode>() const { return is_text_node(); }
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}
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