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use std::sync::{Arc, Mutex};
use crate::dpi::LogicalPosition;
use crate::event::{
DeviceEvent, ElementState, ModifiersState, MouseButton, MouseScrollDelta, TouchPhase,
WindowEvent,
};
use super::{
event_loop::{CursorManager, EventsSink},
make_wid,
window::WindowStore,
DeviceId,
};
use smithay_client_toolkit::surface;
use smithay_client_toolkit::reexports::client::protocol::{
wl_pointer::{self, Event as PtrEvent, WlPointer},
wl_seat,
};
use smithay_client_toolkit::reexports::protocols::unstable::relative_pointer::v1::client::{
zwp_relative_pointer_manager_v1::ZwpRelativePointerManagerV1, zwp_relative_pointer_v1::Event,
zwp_relative_pointer_v1::ZwpRelativePointerV1,
};
use smithay_client_toolkit::reexports::protocols::unstable::pointer_constraints::v1::client::{
zwp_locked_pointer_v1::ZwpLockedPointerV1, zwp_pointer_constraints_v1::Lifetime,
zwp_pointer_constraints_v1::ZwpPointerConstraintsV1,
};
use smithay_client_toolkit::reexports::client::protocol::wl_surface::WlSurface;
pub fn implement_pointer(
seat: &wl_seat::WlSeat,
sink: EventsSink,
store: Arc<Mutex<WindowStore>>,
modifiers_tracker: Arc<Mutex<ModifiersState>>,
cursor_manager: Arc<Mutex<CursorManager>>,
) -> WlPointer {
seat.get_pointer(|pointer| {
// Currently focused winit surface
let mut mouse_focus = None;
let mut axis_buffer = None;
let mut axis_discrete_buffer = None;
let mut axis_state = TouchPhase::Ended;
pointer.implement_closure(
move |evt, pointer| {
let store = store.lock().unwrap();
let mut cursor_manager = cursor_manager.lock().unwrap();
match evt {
PtrEvent::Enter {
surface,
surface_x,
surface_y,
..
} => {
let wid = store.find_wid(&surface);
if let Some(wid) = wid {
let scale_factor = surface::get_dpi_factor(&surface) as f64;
mouse_focus = Some(surface);
// Reload cursor style only when we enter winit's surface. Calling
// this function every time on `PtrEvent::Enter` could interfere with
// SCTK CSD handling, since it changes cursor icons when you hover
// cursor over the window borders.
cursor_manager.reload_cursor_style();
sink.send_window_event(
WindowEvent::CursorEntered {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
},
wid,
);
let position = LogicalPosition::new(surface_x, surface_y)
.to_physical(scale_factor);
sink.send_window_event(
WindowEvent::CursorMoved {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
position,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
wid,
);
}
}
PtrEvent::Leave { surface, .. } => {
mouse_focus = None;
let wid = store.find_wid(&surface);
if let Some(wid) = wid {
sink.send_window_event(
WindowEvent::CursorLeft {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
},
wid,
);
}
}
PtrEvent::Motion {
surface_x,
surface_y,
..
} => {
if let Some(surface) = mouse_focus.as_ref() {
let wid = make_wid(surface);
let scale_factor = surface::get_dpi_factor(&surface) as f64;
let position = LogicalPosition::new(surface_x, surface_y)
.to_physical(scale_factor);
sink.send_window_event(
WindowEvent::CursorMoved {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
position,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
wid,
);
}
}
PtrEvent::Button { button, state, .. } => {
if let Some(surface) = mouse_focus.as_ref() {
let state = match state {
wl_pointer::ButtonState::Pressed => ElementState::Pressed,
wl_pointer::ButtonState::Released => ElementState::Released,
_ => unreachable!(),
};
let button = match button {
0x110 => MouseButton::Left,
0x111 => MouseButton::Right,
0x112 => MouseButton::Middle,
// TODO figure out the translation ?
_ => return,
};
sink.send_window_event(
WindowEvent::MouseInput {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
state,
button,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
make_wid(surface),
);
}
}
PtrEvent::Axis { axis, value, .. } => {
if let Some(surface) = mouse_focus.as_ref() {
let wid = make_wid(surface);
if pointer.as_ref().version() < 5 {
let (mut x, mut y) = (0.0, 0.0);
// old seat compatibility
match axis {
// wayland vertical sign convention is the inverse of winit
wl_pointer::Axis::VerticalScroll => y -= value as f32,
wl_pointer::Axis::HorizontalScroll => x += value as f32,
_ => unreachable!(),
}
sink.send_window_event(
WindowEvent::MouseWheel {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
delta: MouseScrollDelta::PixelDelta(
(x as f64, y as f64).into(),
),
phase: TouchPhase::Moved,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
wid,
);
} else {
let (mut x, mut y) = axis_buffer.unwrap_or((0.0, 0.0));
match axis {
// wayland vertical sign convention is the inverse of winit
wl_pointer::Axis::VerticalScroll => y -= value as f32,
wl_pointer::Axis::HorizontalScroll => x += value as f32,
_ => unreachable!(),
}
axis_buffer = Some((x, y));
axis_state = match axis_state {
TouchPhase::Started | TouchPhase::Moved => TouchPhase::Moved,
_ => TouchPhase::Started,
}
}
}
}
PtrEvent::Frame => {
let axis_buffer = axis_buffer.take();
let axis_discrete_buffer = axis_discrete_buffer.take();
if let Some(surface) = mouse_focus.as_ref() {
let wid = make_wid(surface);
if let Some((x, y)) = axis_discrete_buffer {
sink.send_window_event(
WindowEvent::MouseWheel {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
delta: MouseScrollDelta::LineDelta(x as f32, y as f32),
phase: axis_state,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
wid,
);
} else if let Some((x, y)) = axis_buffer {
sink.send_window_event(
WindowEvent::MouseWheel {
device_id: crate::event::DeviceId(
crate::platform_impl::DeviceId::Wayland(DeviceId),
),
delta: MouseScrollDelta::PixelDelta(
(x as f64, y as f64).into(),
),
phase: axis_state,
modifiers: modifiers_tracker.lock().unwrap().clone(),
},
wid,
);
}
}
}
PtrEvent::AxisSource { .. } => (),
PtrEvent::AxisStop { .. } => {
axis_state = TouchPhase::Ended;
}
PtrEvent::AxisDiscrete { axis, discrete } => {
let (mut x, mut y) = axis_discrete_buffer.unwrap_or((0, 0));
match axis {
// wayland vertical sign convention is the inverse of winit
wl_pointer::Axis::VerticalScroll => y -= discrete,
wl_pointer::Axis::HorizontalScroll => x += discrete,
_ => unreachable!(),
}
axis_discrete_buffer = Some((x, y));
axis_state = match axis_state {
TouchPhase::Started | TouchPhase::Moved => TouchPhase::Moved,
_ => TouchPhase::Started,
}
}
_ => unreachable!(),
}
},
(),
)
})
.unwrap()
}
pub fn implement_relative_pointer(
sink: EventsSink,
pointer: &WlPointer,
manager: &ZwpRelativePointerManagerV1,
) -> Result<ZwpRelativePointerV1, ()> {
manager.get_relative_pointer(pointer, |rel_pointer| {
rel_pointer.implement_closure(
move |evt, _rel_pointer| match evt {
Event::RelativeMotion { dx, dy, .. } => {
sink.send_device_event(DeviceEvent::MouseMotion { delta: (dx, dy) }, DeviceId)
}
_ => unreachable!(),
},
(),
)
})
}
pub fn implement_locked_pointer(
surface: &WlSurface,
pointer: &WlPointer,
constraints: &ZwpPointerConstraintsV1,
) -> Result<ZwpLockedPointerV1, ()> {
constraints.lock_pointer(surface, pointer, None, Lifetime::Persistent.to_raw(), |c| {
c.implement_closure(|_, _| (), ())
})
}