jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
4 * Copyright (c) 2022, the SerenityOS developers.
5 *
6 * SPDX-License-Identifier: BSD-2-Clause
7 */
8
9#pragma once
10
11#include <LibGUI/AbstractScrollableWidget.h>
12#include <LibGUI/TextRange.h>
13#include <LibGfx/Font/BitmapFont.h>
14#include <LibUnicode/CharacterTypes.h>
15
16namespace GUI {
17
18class GlyphMapWidget final : public AbstractScrollableWidget {
19 C_OBJECT(GlyphMapWidget)
20public:
21 virtual ~GlyphMapWidget() override = default;
22
23 ErrorOr<void> set_font(Gfx::Font const&);
24
25 class Selection {
26 public:
27 Selection() = default;
28 Selection(int start, int size)
29 : m_start(start)
30 , m_size(size)
31 {
32 }
33
34 int size() const { return m_size; }
35 void set_size(int i) { m_size = i; }
36 int start() const { return m_start; }
37 void set_start(int i) { m_start = i; }
38
39 Selection normalized() const;
40 bool contains(int) const;
41 void resize_by(int i);
42 void extend_to(int);
43
44 private:
45 int m_start { 0 };
46 int m_size { 1 };
47 };
48
49 Selection selection() const { return m_selection; }
50 int active_glyph() const { return m_active_glyph; }
51
52 enum class ShouldResetSelection {
53 Yes,
54 No
55 };
56
57 void set_active_range(Unicode::CodePointRange);
58 void set_active_glyph(int, ShouldResetSelection = ShouldResetSelection::Yes);
59
60 void set_selection(int start, int size, Optional<u32> active_glyph = {});
61 void restore_selection(int start, int size, int active_glyph);
62
63 void scroll_to_glyph(int);
64 void update_glyph(int);
65
66 void set_highlight_modifications(bool);
67 void set_show_system_emoji(bool);
68
69 void set_glyph_modified(u32 glyph, bool modified);
70 bool glyph_is_modified(u32 glyph);
71
72 void select_previous_existing_glyph();
73 void select_next_existing_glyph();
74
75 int rows() const { return m_rows; }
76 int columns() const { return m_columns; }
77
78 Function<void()> on_escape_pressed;
79 Function<void(int)> on_active_glyph_changed;
80 Function<void(int)> on_glyph_double_clicked;
81 Function<void(ContextMenuEvent&)> on_context_menu_request;
82
83private:
84 GlyphMapWidget();
85 virtual void paint_event(PaintEvent&) override;
86 virtual void mousedown_event(MouseEvent&) override;
87 virtual void mouseup_event(GUI::MouseEvent&) override;
88 virtual void mousemove_event(GUI::MouseEvent&) override;
89 virtual void doubleclick_event(MouseEvent&) override;
90 virtual void keydown_event(KeyEvent&) override;
91 virtual void resize_event(ResizeEvent&) override;
92 virtual void did_change_font() override;
93 virtual void context_menu_event(ContextMenuEvent&) override;
94 virtual void enter_event(Core::Event&) override;
95 virtual void leave_event(Core::Event&) override;
96 virtual void automatic_scrolling_timer_did_fire() override;
97 virtual Optional<UISize> calculated_min_size() const override;
98
99 Gfx::IntRect get_outer_rect(int glyph) const;
100 Optional<int> glyph_at_position(Gfx::IntPoint) const;
101 int glyph_at_position_clamped(Gfx::IntPoint) const;
102
103 void recalculate_content_size();
104
105 RefPtr<Gfx::Font> m_original_font;
106 int m_glyph_count { 0x110000 };
107 int m_columns { 0 };
108 int m_rows { 0 };
109 int m_visible_rows { 0 };
110 int m_horizontal_spacing { 4 };
111 int m_vertical_spacing { 4 };
112 Selection m_selection;
113 int m_active_glyph { 0 };
114 int m_visible_glyphs { 0 };
115 bool m_in_drag_select { false };
116 bool m_highlight_modifications { false };
117 bool m_show_system_emoji { false };
118 HashTable<u32> m_modified_glyphs;
119 Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
120 Gfx::IntPoint m_last_mousemove_position;
121};
122
123}