02b316fd5c
This patch adds a bunch of Paintable subclasses, each corresponding to
the Layout::Node subclasses that had a paint() override. All painting
logic is moved from layout nodes into their corresponding paintables.
Paintables are now created by asking a Layout::Box to produce one:
static NonnullOwnPtr<Paintable> Layout::Box::create_paintable()
Note that inline nodes still have their painting logic. Since they
are not boxes, and all paintables have a corresponding box, we'll need
to come up with some other solution for them.
70 lines
2.3 KiB
C++
70 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&, Painting::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) const;
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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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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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