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Serenity Operating System
1/*
2 * Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
3 * Copyright (c) 2022, the SerenityOS developers.
4 *
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8#pragma once
9
10#include <AK/Vector.h>
11#include <LibGUI/AbstractView.h>
12
13namespace GUI {
14
15class ColumnsView : public AbstractView {
16 C_OBJECT(ColumnsView)
17public:
18 int model_column() const { return m_model_column; }
19 void set_model_column(int column) { m_model_column = column; }
20
21 virtual ModelIndex index_at_event_position(Gfx::IntPoint) const override;
22 virtual Gfx::IntRect content_rect(ModelIndex const&) const override;
23 virtual Gfx::IntRect paint_invalidation_rect(ModelIndex const&) const override;
24
25 virtual void scroll_into_view(ModelIndex const&, bool scroll_horizontally, bool scroll_vertically) override;
26
27private:
28 ColumnsView();
29 virtual ~ColumnsView() override = default;
30 void push_column(ModelIndex const& parent_index);
31 void update_column_sizes();
32
33 int item_height() const { return 18; }
34 int icon_size() const { return 16; }
35 int icon_spacing() const { return 2; }
36 int text_padding() const { return 2; }
37 int column_separator_width() const { return 1; }
38
39 virtual void model_did_update(unsigned flags) override;
40 virtual void second_paint_event(PaintEvent&) override;
41 virtual void paint_event(PaintEvent&) override;
42 virtual void mousedown_event(MouseEvent& event) override;
43 virtual void mousemove_event(MouseEvent&) override;
44 virtual void mouseup_event(MouseEvent&) override;
45
46 virtual void select_range(ModelIndex const&) override;
47
48 void move_cursor(CursorMovement, SelectionUpdate) override;
49
50 virtual void select_all() override;
51 struct Column {
52 ModelIndex parent_index;
53 int width;
54 // TODO: per-column vertical scroll?
55 };
56
57 Optional<Column> column_at_event_position(Gfx::IntPoint) const;
58 ModelIndex index_at_event_position_in_column(Gfx::IntPoint, Column const&) const;
59 Gfx::IntRect index_content_rect(ModelIndex const&);
60
61 bool m_rubber_banding { false };
62 int m_rubber_band_origin { 0 };
63 Column m_rubber_band_origin_column;
64 int m_rubber_band_current { 0 };
65
66 Vector<Column> m_columns;
67 int m_model_column { 0 };
68};
69
70}