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WindowServer+LibGUI: Expose raw scroll wheel values to applications

Browse source 
This is useful, for instance, in games in which you can switch held
items using the scroll wheel. In order to implement this, they
previously would have to either add a hard-coded division by 4, or look
up your mouse settings to adjust correctly.

This commit adds an MouseEvent.wheel_raw_delta_x() and
MouseEvent.wheel_raw_delta_y().
This commit is contained in:
circl 2022-03-26 23:04:47 +01:00 • committed by Andreas Kling
parent 148f8169a4
commit eeeaf410fb
11 changed files with 49 additions and 33 deletions
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4
Userland/Libraries/LibGUI/Window.cpp
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@ -366,7 +366,7 @@ void Window::handle_mouse_event(MouseEvent& event)
if (m_automatic_cursor_tracking_widget) {
auto window_relative_rect = m_automatic_cursor_tracking_widget->window_relative_rect();
Gfx::IntPoint local_point { event.x() - window_relative_rect.x(), event.y() - window_relative_rect.y() };
auto local_event = MouseEvent((Event::Type)event.type(), local_point, event.buttons(), event.button(), event.modifiers(), event.wheel_delta_x(), event.wheel_delta_y());
auto local_event = MouseEvent((Event::Type)event.type(), local_point, event.buttons(), event.button(), event.modifiers(), event.wheel_delta_x(), event.wheel_delta_y(), event.wheel_raw_delta_x(), event.wheel_raw_delta_y());
m_automatic_cursor_tracking_widget->dispatch_event(local_event, this);
if (event.buttons() == 0)
m_automatic_cursor_tracking_widget = nullptr;
@ -375,7 +375,7 @@ void Window::handle_mouse_event(MouseEvent& event)
if (!m_main_widget)
return;
auto result = m_main_widget->hit_test(event.position());
auto local_event = MouseEvent((Event::Type)event.type(), result.local_position, event.buttons(), event.button(), event.modifiers(), event.wheel_delta_x(), event.wheel_delta_y());
auto local_event = MouseEvent((Event::Type)event.type(), result.local_position, event.buttons(), event.button(), event.modifiers(), event.wheel_delta_x(), event.wheel_delta_y(), event.wheel_raw_delta_x(), event.wheel_raw_delta_y());
VERIFY(result.widget);
set_hovered_widget(result.widget);
if (event.buttons() != 0 && !m_automatic_cursor_tracking_widget)