332 lines
12 KiB
Rust
332 lines
12 KiB
Rust
use std::{
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collections::{HashMap, HashSet},
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error::Error,
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ffi::OsString,
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sync::Arc,
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time::Instant,
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};
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use ferese_layout::{Axis, Direction, GapConfig, LayoutTree, Rect, WindowId};
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use smithay::{
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desktop::{PopupManager, Space, Window, WindowSurfaceType},
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input::{Seat, SeatState},
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reexports::{
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calloop::{EventLoop, Interest, LoopSignal, Mode, PostAction, generic::Generic},
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wayland_server::{
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Display, DisplayHandle,
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backend::{ClientData, ClientId, DisconnectReason},
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protocol::wl_surface::WlSurface,
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},
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},
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utils::{Logical, Point},
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wayland::{
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compositor::{CompositorClientState, CompositorState},
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fractional_scale::FractionalScaleManagerState,
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output::OutputManagerState,
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pointer_constraints::PointerConstraintsState,
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presentation::PresentationState,
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relative_pointer::RelativePointerManagerState,
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selection::{data_device::DataDeviceState, primary_selection::PrimarySelectionState},
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shell::xdg::XdgShellState,
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shell::xdg::decoration::XdgDecorationState,
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shm::ShmState,
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socket::ListeningSocketSource,
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viewporter::ViewporterState,
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xdg_activation::XdgActivationState,
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},
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};
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pub struct Ferese {
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pub start_time: Instant,
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pub socket_name: OsString,
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pub display_handle: DisplayHandle,
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pub loop_signal: LoopSignal,
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pub space: Space<Window>,
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pub layout: LayoutTree,
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pub window_ids: HashMap<Window, WindowId>,
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pub focused_window: Option<WindowId>,
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pub intercepted_keys: HashSet<smithay::input::keyboard::Keycode>,
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next_window_id: u64,
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pub popups: PopupManager,
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pub seat: Seat<Self>,
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pub compositor_state: CompositorState,
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pub data_device_state: DataDeviceState,
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pub decoration_state: XdgDecorationState,
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pub fractional_scale_state: FractionalScaleManagerState,
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pub output_manager_state: OutputManagerState,
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pub pointer_constraints_state: PointerConstraintsState,
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pub presentation_state: PresentationState,
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pub primary_selection_state: PrimarySelectionState,
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pub relative_pointer_state: RelativePointerManagerState,
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pub seat_state: SeatState<Self>,
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pub shm_state: ShmState,
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pub viewporter_state: ViewporterState,
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pub xdg_activation_state: XdgActivationState,
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pub xdg_shell_state: XdgShellState,
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}
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impl Ferese {
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pub fn new(
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event_loop: &mut EventLoop<Self>,
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display: Display<Self>,
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) -> Result<Self, Box<dyn Error>> {
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let display_handle = display.handle();
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let compositor_state = CompositorState::new::<Self>(&display_handle);
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let xdg_shell_state = XdgShellState::new::<Self>(&display_handle);
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let decoration_state = XdgDecorationState::new::<Self>(&display_handle);
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let fractional_scale_state = FractionalScaleManagerState::new::<Self>(&display_handle);
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let shm_state = ShmState::new::<Self>(&display_handle, Vec::new());
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let output_manager_state = OutputManagerState::new_with_xdg_output::<Self>(&display_handle);
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let pointer_constraints_state = PointerConstraintsState::new::<Self>(&display_handle);
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let presentation_state =
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PresentationState::new::<Self>(&display_handle, libc::CLOCK_MONOTONIC as u32);
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let data_device_state = DataDeviceState::new::<Self>(&display_handle);
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let primary_selection_state = PrimarySelectionState::new::<Self>(&display_handle);
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let relative_pointer_state = RelativePointerManagerState::new::<Self>(&display_handle);
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let viewporter_state = ViewporterState::new::<Self>(&display_handle);
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let xdg_activation_state = XdgActivationState::new::<Self>(&display_handle);
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let mut seat_state = SeatState::new();
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let mut seat = seat_state.new_wl_seat(&display_handle, "ferese-winit");
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seat.add_keyboard(Default::default(), 200, 25)?;
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seat.add_pointer();
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let socket_name = Self::init_wayland_listener(display, event_loop)?;
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Ok(Self {
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start_time: Instant::now(),
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socket_name,
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display_handle,
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loop_signal: event_loop.get_signal(),
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space: Space::default(),
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layout: LayoutTree::default(),
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window_ids: HashMap::new(),
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focused_window: None,
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intercepted_keys: HashSet::new(),
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next_window_id: 1,
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popups: PopupManager::default(),
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seat,
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compositor_state,
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data_device_state,
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decoration_state,
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fractional_scale_state,
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output_manager_state,
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pointer_constraints_state,
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presentation_state,
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primary_selection_state,
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relative_pointer_state,
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seat_state,
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shm_state,
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viewporter_state,
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xdg_activation_state,
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xdg_shell_state,
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})
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}
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fn init_wayland_listener(
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display: Display<Self>,
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event_loop: &mut EventLoop<Self>,
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) -> Result<OsString, Box<dyn Error>> {
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let listening_socket = ListeningSocketSource::new_auto()?;
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let socket_name = listening_socket.socket_name().to_os_string();
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let loop_handle = event_loop.handle();
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loop_handle.insert_source(listening_socket, |client_stream, _, state| {
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if let Err(error) = state
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.display_handle
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.insert_client(client_stream, Arc::new(ClientState::default()))
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{
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tracing::warn!(%error, "failed to register Wayland client");
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}
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})?;
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loop_handle.insert_source(
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Generic::new(display, Interest::READ, Mode::Level),
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|_, display, state| {
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// SAFETY: this event source owns the display for the loop lifetime.
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unsafe { display.get_mut().dispatch_clients(state)? };
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Ok(PostAction::Continue)
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},
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)?;
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Ok(socket_name)
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}
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pub fn surface_under(
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&self,
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position: Point<f64, Logical>,
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) -> Option<(WlSurface, Point<f64, Logical>)> {
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self.space
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.element_under(position)
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.and_then(|(window, location)| {
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window
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.surface_under(position - location.to_f64(), WindowSurfaceType::ALL)
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.map(|(surface, surface_location)| {
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(surface, (surface_location + location).to_f64())
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})
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})
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}
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pub fn add_tiled_window(&mut self, window: Window) {
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let id = WindowId(self.next_window_id);
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self.next_window_id += 1;
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let axis = self
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.output_bounds()
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.and_then(|bounds| self.layout.automatic_axis(self.focused_window, bounds).ok())
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.unwrap_or(Axis::Horizontal);
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if let Err(error) = self.layout.insert(id, self.focused_window, axis, 0.5) {
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tracing::error!(%error, ?id, "failed to insert window into layout");
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return;
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}
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self.window_ids.insert(window.clone(), id);
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self.focused_window = Some(id);
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self.space.map_element(window, (0, 0), true);
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self.relayout();
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}
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pub fn remove_tiled_window(&mut self, window: &Window) {
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let Some(id) = self.window_ids.remove(window) else {
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return;
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};
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self.space.unmap_elem(window);
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if let Err(error) = self.layout.remove(id) {
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tracing::error!(%error, ?id, "failed to remove window from layout");
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}
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if self.focused_window == Some(id) {
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self.focused_window = self
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.space
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.elements()
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.rev()
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.find_map(|window| self.window_ids.get(window).copied());
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}
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self.relayout();
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}
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pub fn relayout(&mut self) {
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let Some(bounds) = self.output_bounds() else {
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return;
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};
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let geometry = match self.layout.geometry_with_gaps(bounds, GapConfig::default()) {
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Ok(geometry) => geometry,
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Err(error) => {
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tracing::error!(%error, "failed to compute tiled geometry");
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return;
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}
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};
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let placements = self
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.window_ids
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.iter()
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.filter_map(|(window, id)| geometry.get(id).map(|rect| (window.clone(), *rect)))
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.collect::<Vec<_>>();
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for (window, rect) in placements {
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let location = (rect.x.round() as i32, rect.y.round() as i32);
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let size = (
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(rect.width.round() as i32).max(1),
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(rect.height.round() as i32).max(1),
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);
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self.space.map_element(window.clone(), location, false);
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if let Some(toplevel) = window.toplevel() {
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toplevel.with_pending_state(|state| state.size = Some(size.into()));
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toplevel.send_pending_configure();
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}
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}
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}
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pub fn focus_direction(&mut self, direction: Direction) {
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let Some(current) = self.focused_window else {
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return;
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};
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let Some(bounds) = self.output_bounds() else {
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return;
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};
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let Ok(Some(next)) = self.layout.directional_neighbor(current, direction, bounds) else {
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return;
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};
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let Some(window) = self
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.window_ids
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.iter()
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.find_map(|(window, id)| (*id == next).then(|| window.clone()))
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else {
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return;
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};
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let Some(surface) = window
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.toplevel()
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.map(|toplevel| toplevel.wl_surface().clone())
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else {
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return;
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};
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self.focused_window = Some(next);
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self.space.raise_element(&window, true);
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self.seat
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.get_keyboard()
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.expect("seat has a keyboard")
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.set_focus(
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self,
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Some(surface),
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smithay::utils::SERIAL_COUNTER.next_serial(),
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);
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for window in self.space.elements() {
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if let Some(toplevel) = window.toplevel() {
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toplevel.send_pending_configure();
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}
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}
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}
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pub fn move_direction(&mut self, direction: Direction) {
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let Some(current) = self.focused_window else {
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return;
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};
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let Some(bounds) = self.output_bounds() else {
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return;
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};
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match self.layout.move_window(current, direction, bounds) {
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Ok(true) => self.relayout(),
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Ok(false) => {}
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Err(error) => tracing::error!(%error, ?current, "failed to move tiled window"),
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}
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}
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pub fn resize_direction(&mut self, direction: Direction) {
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const RESIZE_STEP: f64 = 0.05;
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let Some(current) = self.focused_window else {
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return;
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};
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match self.layout.resize_window(current, direction, RESIZE_STEP) {
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Ok(true) => self.relayout(),
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Ok(false) => {}
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Err(error) => tracing::error!(%error, ?current, "failed to resize tiled window"),
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}
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}
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fn output_bounds(&self) -> Option<Rect> {
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let output = self.space.outputs().next()?;
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let geometry = self.space.output_geometry(output)?;
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Some(Rect::new(
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geometry.loc.x as f64,
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geometry.loc.y as f64,
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geometry.size.w as f64,
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geometry.size.h as f64,
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))
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}
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}
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#[derive(Default)]
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pub struct ClientState {
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pub compositor_state: CompositorClientState,
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}
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impl ClientData for ClientState {
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fn initialized(&self, _client_id: ClientId) {}
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fn disconnected(&self, _client_id: ClientId, _reason: DisconnectReason) {}
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}
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