GamesSettings: Introduce a new GamesSettings application :^)

This currently has exactly one setting: The background colour for card
games. My thinking is, it's better to not have a Settings application
for each individual game we include in the system, since most will only
have a small number of settings, all Settings windows have tabs anyway,
and I don't want to flood the Settings app list unnecessarily.

As for having a single setting for all the card games: it's nice when
things match. :^)

Base/res/apps/GamesSettings.af

@@ -0,0 +1,5 @@
+[App]
+Name=Games Settings
+Executable=/bin/GamesSettings
+Category=Settings
+Description=Configure games

Userland/Applications/CMakeLists.txt

@@ -13,6 +13,7 @@ add_subdirectory(Debugger)
 add_subdirectory(DisplaySettings)
 add_subdirectory(FileManager)
 add_subdirectory(FontEditor)
+add_subdirectory(GamesSettings)
 add_subdirectory(Help)
 add_subdirectory(HexEditor)
 add_subdirectory(ImageViewer)

Userland/Applications/GamesSettings/CMakeLists.txt

@@ -0,0 +1,17 @@
+serenity_component(
+        GamesSettings
+        REQUIRED
+        TARGETS GamesSettings
+)
+
+compile_gml(CardSettingsWidget.gml CardSettingsWidgetGML.h card_settings_widget_gml)
+
+set(SOURCES
+        main.cpp
+        CardSettingsWidgetGML.h
+        CardSettingsWidget.cpp
+        CardSettingsWidget.h
+        )
+
+serenity_app(GamesSettings ICON games)
+target_link_libraries(GamesSettings LibGUI LibMain)

Userland/Applications/GamesSettings/CardSettingsWidget.cpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "CardSettingsWidget.h"
+#include <Applications/GamesSettings/CardSettingsWidgetGML.h>
+#include <LibConfig/Client.h>
+
+CardSettingsWidget::CardSettingsWidget()
+{
+    load_from_gml(card_settings_widget_gml);
+
+    m_background_color_input = find_descendant_of_type_named<GUI::ColorInput>("cards_background_color");
+    auto background_color = Gfx::Color::from_string(Config::read_string("Games"sv, "Cards"sv, "BackgroundColor"sv)).value_or(Gfx::Color::from_rgb(0x008000));
+    m_background_color_input->set_color(background_color, GUI::AllowCallback::No);
+    m_background_color_input->on_change = [&]() { set_modified(true); };
+}
+
+void CardSettingsWidget::apply_settings()
+{
+    Config::write_string("Games"sv, "Cards"sv, "BackgroundColor"sv, m_background_color_input->text());
+}
+
+void CardSettingsWidget::reset_default_values()
+{
+    m_background_color_input->set_color(Gfx::Color::from_rgb(0x008000));
+}

Userland/Applications/GamesSettings/CardSettingsWidget.gml

@@ -0,0 +1,19 @@
+@GUI::Frame {
+    fill_with_background_color: true
+    layout: @GUI::VerticalBoxLayout {
+        margins: [8]
+    }
+
+    @GUI::GroupBox {
+        title: "Background Color"
+        max_height: "shrink"
+        layout: @GUI::VerticalBoxLayout {
+            margins: [8]
+        }
+
+        @GUI::ColorInput {
+            name: "cards_background_color"
+            has_alpha_channel: false
+        }
+    }
+}

Userland/Applications/GamesSettings/CardSettingsWidget.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGUI/ColorInput.h>
+#include <LibGUI/SettingsWindow.h>
+
+class CardSettingsWidget final : public GUI::SettingsWindow::Tab {
+    C_OBJECT(CardSettingsWidget)
+public:
+    virtual ~CardSettingsWidget() override = default;
+
+    virtual void apply_settings() override;
+    virtual void reset_default_values() override;
+
+private:
+    CardSettingsWidget();
+
+    RefPtr<GUI::ColorInput> m_background_color_input;
+};

Userland/Applications/GamesSettings/main.cpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "CardSettingsWidget.h"
+#include <LibConfig/Client.h>
+#include <LibCore/ArgsParser.h>
+#include <LibCore/System.h>
+#include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
+#include <LibGUI/SettingsWindow.h>
+#include <LibMain/Main.h>
+
+ErrorOr<int> serenity_main(Main::Arguments arguments)
+{
+    TRY(Core::System::pledge("stdio rpath recvfd sendfd unix"));
+    auto app = TRY(GUI::Application::try_create(arguments));
+    Config::pledge_domain("Games");
+
+    StringView selected_tab;
+    Core::ArgsParser args_parser;
+    args_parser.add_option(selected_tab, "Tab, must be 'cards'", "open-tab", 't', "tab");
+    args_parser.parse(arguments);
+
+    TRY(Core::System::unveil("/res", "r"));
+    TRY(Core::System::unveil(nullptr, nullptr));
+
+    auto app_icon = GUI::Icon::default_icon("games"sv);
+
+    auto window = TRY(GUI::SettingsWindow::create("Games Settings", GUI::SettingsWindow::ShowDefaultsButton::Yes));
+    window->set_icon(app_icon.bitmap_for_size(16));
+    (void)TRY(window->add_tab<CardSettingsWidget>("Cards"sv, "cards"sv));
+    window->set_active_tab(selected_tab);
+
+    window->show();
+    return app->exec();
+}