Applications: Added a new MouseSettings application

This app allows the user to easily adjust his mouse's acceleration
as well as the scrollwheel's global scroll length.

The mouse acceleration changes would not be noticeable in qemu as
by default serenity uses VMWareBackdoor when available which lets
the host handle mouse movement instead of the guest (Serenity),
so in order to test this on a none-baremetal pc the VMWareBackdoor
has to be disabled.

4 files changed, 147 insertions, 0 deletions

diff --git a/Applications/CMakeLists.txt b/Applications/CMakeLists.txt
index 3cac484069..b58ceb84c6 100644
--- a/Applications/CMakeLists.txt
+++ b/Applications/CMakeLists.txt
@@ -12,6 +12,7 @@ add_subdirectory(HexEditor)
 add_subdirectory(IRCClient)
 add_subdirectory(KeyboardMapper)
 add_subdirectory(KeyboardSettings)
+add_subdirectory(MouseSettings)
 add_subdirectory(Piano)
 add_subdirectory(PixelPaint)
 add_subdirectory(QuickShow)
diff --git a/Applications/MouseSettings/CMakeLists.txt b/Applications/MouseSettings/CMakeLists.txt
new file mode 100644
index 0000000000..f52df8d76c
--- /dev/null
+++ b/Applications/MouseSettings/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(SOURCES
+    main.cpp
+)
+
+serenity_app(MouseSettings ICON app-mouse)
+target_link_libraries(MouseSettings LibGUI)
diff --git a/Applications/MouseSettings/main.cpp b/Applications/MouseSettings/main.cpp
new file mode 100644
index 0000000000..ec6e6452ad
--- /dev/null
+++ b/Applications/MouseSettings/main.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2020, Idan Horowitz <idan.horowitz@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibGUI/AboutDialog.h>
+#include <LibGUI/Action.h>
+#include <LibGUI/Application.h>
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Button.h>
+#include <LibGUI/GroupBox.h>
+#include <LibGUI/Icon.h>
+#include <LibGUI/Menu.h>
+#include <LibGUI/MenuBar.h>
+#include <LibGUI/Slider.h>
+#include <LibGUI/SpinBox.h>
+#include <LibGUI/Widget.h>
+#include <LibGUI/Window.h>
+#include <LibGUI/WindowServerConnection.h>
+#include <LibGfx/SystemTheme.h>
+#include <WindowServer/Screen.h>
+
+int main(int argc, char** argv)
+{
+    if (pledge("stdio cpath rpath shared_buffer unix fattr", nullptr) < 0) {
+        perror("pledge");
+        return 1;
+    }
+
+    auto app = GUI::Application::construct(argc, argv);
+
+    if (pledge("stdio cpath rpath shared_buffer", nullptr) < 0) {
+        perror("pledge");
+        return 1;
+    }
+
+    auto app_icon = GUI::Icon::default_icon("app-mouse");
+    auto window = GUI::Window::construct();
+    window->set_title("Mouse settings");
+    window->resize(200, 130);
+    window->set_resizable(false);
+    window->set_icon(app_icon.bitmap_for_size(16));
+
+    auto& settings = window->set_main_widget<GUI::Widget>();
+    settings.set_fill_with_background_color(true);
+    settings.set_background_role(ColorRole::Button);
+    settings.set_layout<GUI::VerticalBoxLayout>();
+    settings.layout()->set_margins({ 4, 4, 4, 4 });
+
+    auto& speed_container = settings.add<GUI::GroupBox>("Mouse speed");
+    speed_container.set_layout<GUI::VerticalBoxLayout>();
+    speed_container.layout()->set_margins({ 6, 16, 6, 6 });
+    speed_container.set_fixed_height(50);
+
+    auto& speed_slider = speed_container.add<GUI::HorizontalSlider>();
+    const auto scalar = 1000.0;
+    speed_slider.set_range(WindowServer::mouse_accel_min * scalar, WindowServer::mouse_accel_max * scalar); // These values are scaled down (by a factor of 1000) to get fractional values
+    int current_value = GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetMouseAcceleration>()->factor() * scalar;
+    speed_slider.set_value(current_value);
+
+    auto& scroll_container = settings.add<GUI::GroupBox>("Scroll length");
+    scroll_container.set_layout<GUI::VerticalBoxLayout>();
+    scroll_container.layout()->set_margins({ 6, 16, 6, 6 });
+    scroll_container.set_fixed_height(46);
+
+    auto& scroll_spinbox = scroll_container.add<GUI::SpinBox>();
+    scroll_spinbox.set_min(WindowServer::scroll_step_size_min);
+    scroll_spinbox.set_value(GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetScrollStepSize>()->step_size());
+
+    auto update_window_server = [&]() {
+        float factor = speed_slider.value() / scalar;
+        GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::SetMouseAcceleration>(factor);
+        GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::SetScrollStepSize>(scroll_spinbox.value());
+    };
+
+    auto& prompt_buttons = settings.add<GUI::Widget>();
+    prompt_buttons.set_layout<GUI::HorizontalBoxLayout>();
+    prompt_buttons.set_fixed_height(22);
+
+    auto& ok_button = prompt_buttons.add<GUI::Button>();
+    ok_button.set_text("OK");
+    prompt_buttons.set_fixed_height(22);
+    ok_button.on_click = [&](auto) {
+        update_window_server();
+        app->quit();
+    };
+    auto& apply_button = prompt_buttons.add<GUI::Button>();
+    apply_button.set_text("Apply");
+    prompt_buttons.set_fixed_height(22);
+    apply_button.on_click = [&](auto) {
+        update_window_server();
+    };
+    auto& reset_button = prompt_buttons.add<GUI::Button>();
+    reset_button.set_text("Reset");
+    prompt_buttons.set_fixed_height(22);
+    reset_button.on_click = [&](auto) {
+        speed_slider.set_value(scalar);
+        scroll_spinbox.set_value(4);
+        update_window_server();
+    };
+
+    auto menubar = GUI::MenuBar::construct();
+    auto& app_menu = menubar->add_menu("Mouse settings");
+    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
+        app->quit();
+    }));
+    auto& help_menu = menubar->add_menu("Help");
+    help_menu.add_action(GUI::Action::create("About", [&](auto&) {
+        GUI::AboutDialog::show("Mouse settings", app_icon.bitmap_for_size(32), window);
+    }));
+    app->set_menubar(move(menubar));
+
+    window->show();
+    return app->exec();
+}
diff --git a/Base/res/apps/MouseSettings.af b/Base/res/apps/MouseSettings.af
new file mode 100644
index 0000000000..db46feab7a
--- /dev/null
+++ b/Base/res/apps/MouseSettings.af
@@ -0,0 +1,4 @@
+[App]
+Name=Mouse settings
+Executable=/bin/MouseSettings
+Category=Settings