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use std::collections::HashSet;
use Event as GlutinEvent;
use ElementState;
use MouseButton;
use MouseScrollDelta;
use wayland_client::Event as WaylandEvent;
use wayland_client::ProxyId;
use wayland_client::wayland::WaylandProtocolEvent as WPE;
use wayland_client::wayland::seat::{WlSeat, WlSeatEvent, WlPointerEvent,
WlPointerButtonState,
WlPointerAxis, WlSeatCapability};
use super::wayland_kbd::MappedKeyboard;
use super::context::WaylandFocuses;
pub fn translate_event(
evt: WaylandEvent,
focuses: &mut WaylandFocuses,
known_surfaces: &HashSet<ProxyId>,
seat: Option<&WlSeat>,
) -> Option<(GlutinEvent, ProxyId)>
{
let WaylandEvent::Wayland(wayland_evt) = evt;
match wayland_evt {
WPE::WlSeat(_, seat_evt) => match seat_evt {
WlSeatEvent::Capabilities(cap) => {
if cap.contains(WlSeatCapability::Pointer) && focuses.pointer.is_none() {
if let Some(seat) = seat {
focuses.pointer = Some(seat.get_pointer());
}
}
if cap.contains(WlSeatCapability::Keyboard) && focuses.keyboard.is_none() {
if let Some(seat) = seat {
match MappedKeyboard::new(seat) {
Ok(mk) => {
focuses.keyboard = Some(mk)
},
Err(_) => {}
}
}
}
None
},
_ => None
},
WPE::WlPointer(_, pointer_evt) => match pointer_evt {
WlPointerEvent::Enter(_, surface, x, y) => {
if known_surfaces.contains(&surface) {
focuses.pointer_on = Some(surface);
focuses.pointer_at = Some((x, y));
Some((GlutinEvent::MouseMoved((x as i32, y as i32)), surface))
} else {
None
}
}
WlPointerEvent::Leave(_, _) => {
focuses.pointer_on = None;
focuses.pointer_at = None;
None
}
WlPointerEvent::Motion(_, x, y) => {
if let Some(surface) = focuses.pointer_on {
focuses.pointer_at = Some((x, y));
Some((GlutinEvent::MouseMoved((x as i32, y as i32)), surface))
} else {
None
}
}
WlPointerEvent::Button(_, _, button, state) => {
if let Some(surface) = focuses.pointer_on {
Some((GlutinEvent::MouseInput(
match state {
WlPointerButtonState::Pressed => ElementState::Pressed,
WlPointerButtonState::Released => ElementState::Released
},
match button {
0x110 => MouseButton::Left,
0x111 => MouseButton::Right,
0x112 => MouseButton::Middle,
// TODO figure out the translation ?
_ => return None
}
), surface))
} else {
None
}
}
WlPointerEvent::Axis(_, axis, amplitude) => {
if let Some(surface) = focuses.pointer_on {
Some((GlutinEvent::MouseWheel(
match axis {
WlPointerAxis::VerticalScroll => {
MouseScrollDelta::PixelDelta(amplitude as f32, 0.0)
}
WlPointerAxis::HorizontalScroll => {
MouseScrollDelta::PixelDelta(0.0, amplitude as f32)
}
}
), surface))
} else {
None
}
}
},
_ => None
}
}
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