53f3df78e5
Implement auto-fill and auto-fit for the grid, which allow for placing as many columns as will fit within a given container size.
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
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* Copyright (c) 2022, Martin Falisse <mfalisse@outlook.com>
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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/BlockFormattingContext.h>
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#include <LibWeb/Layout/Box.h>
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#include <LibWeb/Layout/FormattingContext.h>
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namespace Web::Layout {
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class GridFormattingContext final : public BlockFormattingContext {
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public:
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explicit GridFormattingContext(LayoutState&, BlockContainer const&, FormattingContext* parent);
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~GridFormattingContext();
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virtual void run(Box const&, LayoutMode, AvailableSpace const& available_space) override;
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virtual float automatic_content_height() const override;
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private:
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float m_automatic_content_height { 0 };
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bool is_auto_positioned_row(CSS::GridTrackPlacement const&, CSS::GridTrackPlacement const&) const;
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bool is_auto_positioned_column(CSS::GridTrackPlacement const&, CSS::GridTrackPlacement const&) const;
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bool is_auto_positioned_track(CSS::GridTrackPlacement const&, CSS::GridTrackPlacement const&) const;
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struct GridTrack {
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CSS::GridTrackSize min_track_sizing_function;
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CSS::GridTrackSize max_track_sizing_function;
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float base_size { 0 };
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float growth_limit { 0 };
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};
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Vector<GridTrack> m_grid_rows;
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Vector<GridTrack> m_grid_columns;
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float get_free_space_x(Box const&);
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float get_free_space_y(Box const&);
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};
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class OccupationGrid {
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public:
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OccupationGrid(int column_count, int row_count);
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void maybe_add_column(int needed_number_of_columns);
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void maybe_add_row(int needed_number_of_rows);
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void set_occupied(int column_start, int column_end, int row_start, int row_end);
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void set_occupied(int column_index, int row_index);
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int column_count() { return static_cast<int>(m_occupation_grid[0].size()); }
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int row_count() { return static_cast<int>(m_occupation_grid.size()); }
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bool is_occupied(int column_index, int row_index);
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private:
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Vector<Vector<bool>> m_occupation_grid;
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};
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}
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