2022-01-19 13:57:58 +03:00
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/*
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* Copyright (c) 2022, 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 <LibWeb/Layout/InlineFormattingContext.h>
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namespace Web::Layout {
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class LineBuilder {
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AK_MAKE_NONCOPYABLE(LineBuilder);
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AK_MAKE_NONMOVABLE(LineBuilder);
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public:
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2022-08-14 17:43:08 +03:00
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LineBuilder(InlineFormattingContext&, LayoutState&);
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2022-01-19 13:57:58 +03:00
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~LineBuilder();
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2022-09-11 23:39:01 +03:00
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void break_line(Optional<float> next_item_width = {});
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2022-03-09 20:46:07 +03:00
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void append_box(Box const&, float leading_size, float trailing_size, float leading_margin, float trailing_margin);
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void append_text_chunk(TextNode const&, size_t offset_in_node, size_t length_in_node, float leading_size, float trailing_size, float leading_margin, float trailing_margin, float content_width, float content_height);
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2022-01-19 13:57:58 +03:00
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2022-03-26 20:50:43 +03:00
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// Returns whether a line break occurred.
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2022-07-09 16:17:47 +03:00
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bool break_if_needed(float next_item_width)
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2022-01-20 18:19:05 +03:00
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{
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2022-07-09 16:17:47 +03:00
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if (should_break(next_item_width)) {
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2022-09-11 23:39:01 +03:00
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break_line(next_item_width);
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2022-03-26 20:50:43 +03:00
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return true;
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}
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return false;
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2022-01-20 18:19:05 +03:00
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}
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2022-01-19 13:57:58 +03:00
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float available_width_for_current_line() const { return m_available_width_for_current_line; }
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void update_last_line();
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2022-01-22 12:32:49 +03:00
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void remove_last_line_if_empty();
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2022-03-22 21:18:05 +03:00
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float current_y() const { return m_current_y; }
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2022-09-16 15:21:52 +03:00
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void set_current_y(float y) { m_current_y = y; }
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2022-03-22 21:18:05 +03:00
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2022-09-16 15:21:52 +03:00
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void recalculate_available_space();
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float y_for_float_to_be_inserted_here(Box const&);
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2022-03-22 21:18:05 +03:00
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2022-01-19 13:57:58 +03:00
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private:
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2022-09-16 15:21:52 +03:00
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void begin_new_line(bool increment_y, bool is_first_break_in_sequence = true);
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2022-01-23 03:34:26 +03:00
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2022-07-09 16:17:47 +03:00
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bool should_break(float next_item_width);
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2022-01-20 18:19:05 +03:00
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2022-02-20 17:51:24 +03:00
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LineBox& ensure_last_line_box();
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2022-01-19 13:57:58 +03:00
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InlineFormattingContext& m_context;
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2022-07-17 00:43:48 +03:00
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LayoutState& m_layout_state;
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LayoutState::UsedValues& m_containing_block_state;
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2022-01-19 13:57:58 +03:00
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float m_available_width_for_current_line { 0 };
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float m_current_y { 0 };
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float m_max_height_on_current_line { 0 };
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2022-01-22 12:32:49 +03:00
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bool m_last_line_needs_update { false };
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2022-01-19 13:57:58 +03:00
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};
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}
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