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Serenity Operating System
1/*
2 * Copyright (c) 2021-2022, the SerenityOS developers.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include "WelcomeWidget.h"
8#include <AK/Random.h>
9#include <AK/String.h>
10#include <Applications/Welcome/WelcomeWindowGML.h>
11#include <LibConfig/Client.h>
12#include <LibCore/StandardPaths.h>
13#include <LibGUI/Application.h>
14#include <LibGUI/Button.h>
15#include <LibGUI/CheckBox.h>
16#include <LibGUI/Frame.h>
17#include <LibGUI/Label.h>
18#include <LibGUI/Painter.h>
19#include <LibGUI/Process.h>
20#include <LibGfx/Palette.h>
21
22ErrorOr<NonnullRefPtr<WelcomeWidget>> WelcomeWidget::try_create()
23{
24 auto welcome_widget = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) WelcomeWidget()));
25 TRY(welcome_widget->create_widgets());
26
27 return welcome_widget;
28}
29
30ErrorOr<void> WelcomeWidget::create_widgets()
31{
32 TRY(load_from_gml(welcome_window_gml));
33
34 m_banner_widget = find_descendant_of_type_named<GUI::Widget>("welcome_banner");
35 m_banner_font = TRY(Gfx::BitmapFont::try_load_from_file("/res/fonts/MarietaRegular24.font"sv));
36
37 m_web_view = find_descendant_of_type_named<WebView::OutOfProcessWebView>("web_view");
38 auto path = TRY(String::formatted("{}/README.md", Core::StandardPaths::home_directory()));
39 m_web_view->load(URL::create_with_file_scheme(path.to_deprecated_string()));
40
41 m_tip_label = find_descendant_of_type_named<GUI::Label>("tip_label");
42 m_tip_frame = find_descendant_of_type_named<GUI::Frame>("tip_frame");
43
44 m_next_button = find_descendant_of_type_named<GUI::Button>("next_button");
45 m_next_button->on_click = [&](auto) {
46 m_web_view->set_visible(false);
47 m_tip_frame->set_visible(true);
48 if (m_tips.is_empty())
49 return;
50 m_tip_index++;
51 if (m_tip_index >= m_tips.size())
52 m_tip_index = 0;
53 m_tip_label->set_text(m_tips[m_tip_index].to_deprecated_string());
54 };
55
56 m_help_button = find_descendant_of_type_named<GUI::Button>("help_button");
57 m_help_button->on_click = [&](auto) {
58 GUI::Process::spawn_or_show_error(window(), "/bin/Help"sv);
59 };
60
61 m_new_button = find_descendant_of_type_named<GUI::Button>("new_button");
62 m_new_button->on_click = [&](auto) {
63 m_web_view->set_visible(!m_web_view->is_visible());
64 m_tip_frame->set_visible(!m_tip_frame->is_visible());
65 };
66
67 m_close_button = find_descendant_of_type_named<GUI::Button>("close_button");
68 m_close_button->on_click = [](auto) {
69 GUI::Application::the()->quit();
70 };
71
72 auto welcome = Config::list_groups("SystemServer"sv).first_matching([](auto& group) { return group == "Welcome"sv; });
73 m_startup_checkbox = find_descendant_of_type_named<GUI::CheckBox>("startup_checkbox");
74 m_startup_checkbox->set_checked(welcome.has_value());
75 m_startup_checkbox->on_checked = [](bool is_checked) {
76 if (is_checked)
77 Config::add_group("SystemServer"sv, "Welcome"sv);
78 else
79 Config::remove_group("SystemServer"sv, "Welcome"sv);
80 };
81
82 if (auto result = open_and_parse_tips_file(); result.is_error()) {
83 auto path = TRY(String::formatted("{}/tips.txt", Core::StandardPaths::documents_directory()));
84 auto error = TRY(String::formatted("Opening \"{}\" failed: {}", path, result.error()));
85 m_tip_label->set_text(error.to_deprecated_string());
86 warnln(error);
87 }
88
89 set_random_tip();
90
91 return {};
92}
93
94ErrorOr<void> WelcomeWidget::open_and_parse_tips_file()
95{
96 auto path = TRY(String::formatted("{}/tips.txt", Core::StandardPaths::documents_directory()));
97 auto file = TRY(Core::File::open(path, Core::File::OpenMode::Read));
98 auto buffered_file = TRY(Core::BufferedFile::create(move(file)));
99 Array<u8, PAGE_SIZE> buffer;
100
101 while (TRY(buffered_file->can_read_line())) {
102 auto line = TRY(buffered_file->read_line(buffer));
103 if (line.starts_with('#') || line.is_empty())
104 continue;
105 TRY(m_tips.try_append(TRY(String::from_utf8(line))));
106 }
107
108 return {};
109}
110
111void WelcomeWidget::set_random_tip()
112{
113 if (m_tips.is_empty())
114 return;
115
116 m_tip_index = get_random_uniform(m_tips.size());
117 m_tip_label->set_text(m_tips[m_tip_index].to_deprecated_string());
118}
119
120void WelcomeWidget::paint_event(GUI::PaintEvent& event)
121{
122 GUI::Painter painter(*this);
123 painter.add_clip_rect(event.rect());
124
125 auto rect = m_banner_widget->relative_rect();
126 painter.draw_text(rect, "Welcome to "sv, *m_banner_font, Gfx::TextAlignment::CenterLeft, palette().base_text());
127 rect.set_x(rect.x() + static_cast<int>(ceilf(m_banner_font->width("Welcome to "sv))));
128 painter.draw_text(rect, "Serenity"sv, m_banner_font->bold_variant(), Gfx::TextAlignment::CenterLeft, palette().base_text());
129 rect.set_x(rect.x() + static_cast<int>(ceilf(m_banner_font->bold_variant().width("Serenity"sv))));
130 painter.draw_text(rect, "OS"sv, m_banner_font->bold_variant(), Gfx::TextAlignment::CenterLeft, palette().tray_text());
131}