autocommit 2022-02-06 16:33:54 CET

src/ifs/wl_seat/wl_pointer.rs

@@ -0,0 +1,215 @@
+
+use crate::client::{ClientError, DynEventFormatter};
+use crate::cursor::Cursor;
+use crate::fixed::Fixed;
+use crate::ifs::wl_seat::WlSeat;
+use crate::object::Object;
+use crate::utils::buffd::MsgParser;
+use std::rc::Rc;
+use thiserror::Error;
+use crate::ifs::wl_surface::WlSurfaceError;
+use crate::wire::wl_pointer::*;
+use crate::utils::buffd::MsgParserError;
+use crate::wire::{WlPointerId, WlSurfaceId};
+
+#[allow(dead_code)]
+const ROLE: u32 = 0;
+
+pub(super) const RELEASED: u32 = 0;
+pub(super) const PRESSED: u32 = 1;
+
+pub(super) const VERTICAL_SCROLL: u32 = 0;
+pub(super) const HORIZONTAL_SCROLL: u32 = 1;
+
+#[allow(dead_code)]
+const WHEEL: u32 = 0;
+#[allow(dead_code)]
+const FINGER: u32 = 1;
+#[allow(dead_code)]
+const CONTINUOUS: u32 = 2;
+#[allow(dead_code)]
+const WHEEL_TILT: u32 = 3;
+
+pub const POINTER_FRAME_SINCE_VERSION: u32 = 5;
+
+pub struct WlPointer {
+    id: WlPointerId,
+    seat: Rc<WlSeat>,
+}
+
+impl WlPointer {
+    pub fn new(id: WlPointerId, seat: &Rc<WlSeat>) -> Self {
+        Self {
+            id,
+            seat: seat.clone(),
+        }
+    }
+
+    pub fn enter(
+        self: &Rc<Self>,
+        serial: u32,
+        surface: WlSurfaceId,
+        x: Fixed,
+        y: Fixed,
+    ) -> DynEventFormatter {
+        Box::new(Enter {
+            self_id: self.id,
+            serial,
+            surface,
+            surface_x: x,
+            surface_y: y,
+        })
+    }
+
+    pub fn leave(self: &Rc<Self>, serial: u32, surface: WlSurfaceId) -> DynEventFormatter {
+        Box::new(Leave {
+            self_id: self.id,
+            serial,
+            surface,
+        })
+    }
+
+    pub fn motion(self: &Rc<Self>, time: u32, x: Fixed, y: Fixed) -> DynEventFormatter {
+        Box::new(Motion {
+            self_id: self.id,
+            time,
+            surface_x: x,
+            surface_y: y,
+        })
+    }
+
+    pub fn button(
+        self: &Rc<Self>,
+        serial: u32,
+        time: u32,
+        button: u32,
+        state: u32,
+    ) -> DynEventFormatter {
+        Box::new(Button {
+            self_id: self.id,
+            serial,
+            time,
+            button,
+            state,
+        })
+    }
+
+    pub fn axis(self: &Rc<Self>, time: u32, axis: u32, value: Fixed) -> DynEventFormatter {
+        Box::new(Axis {
+            self_id: self.id,
+            time,
+            axis,
+            value,
+        })
+    }
+
+    #[allow(dead_code)]
+    pub fn frame(self: &Rc<Self>) -> DynEventFormatter {
+        Box::new(Frame { self_id: self.id })
+    }
+
+    #[allow(dead_code)]
+    pub fn axis_source(self: &Rc<Self>, axis_source: u32) -> DynEventFormatter {
+        Box::new(AxisSource {
+            self_id: self.id,
+            axis_source,
+        })
+    }
+
+    #[allow(dead_code)]
+    pub fn axis_stop(self: &Rc<Self>, time: u32, axis: u32) -> DynEventFormatter {
+        Box::new(AxisStop {
+            self_id: self.id,
+            time,
+            axis,
+        })
+    }
+
+    #[allow(dead_code)]
+    pub fn axis_discrete(self: &Rc<Self>, axis: u32, discrete: i32) -> DynEventFormatter {
+        Box::new(AxisDiscrete {
+            self_id: self.id,
+            axis,
+            discrete,
+        })
+    }
+
+    fn set_cursor(&self, parser: MsgParser<'_, '_>) -> Result<(), SetCursorError> {
+        let req: SetCursor = self.seat.client.parse(self, parser)?;
+        let mut cursor_opt = None;
+        if req.surface.is_some() {
+            let surface = self.seat.client.lookup(req.surface)?;
+            let cursor = surface.get_cursor(&self.seat.global)?;
+            cursor.set_hotspot(req.hotspot_x, req.hotspot_y);
+            cursor_opt = Some(cursor as Rc<dyn Cursor>);
+        }
+        let pointer_node = match self.seat.global.pointer_stack.borrow().last().cloned() {
+            Some(n) => n,
+            _ => {
+                // cannot happen
+                return Ok(());
+            }
+        };
+        if pointer_node.client_id() != Some(self.seat.client.id) {
+            return Ok(());
+        }
+        self.seat.global.set_cursor(cursor_opt);
+        Ok(())
+    }
+
+    fn release(&self, parser: MsgParser<'_, '_>) -> Result<(), ReleaseError> {
+        let _req: Release = self.seat.client.parse(self, parser)?;
+        self.seat.pointers.remove(&self.id);
+        self.seat.client.remove_obj(self)?;
+        Ok(())
+    }
+}
+
+object_base! {
+    WlPointer, WlPointerError;
+
+    SET_CURSOR => set_cursor,
+    RELEASE => release,
+}
+
+impl Object for WlPointer {
+    fn num_requests(&self) -> u32 {
+        RELEASE + 1
+    }
+}
+
+simple_add_obj!(WlPointer);
+
+#[derive(Debug, Error)]
+pub enum WlPointerError {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("Could not process a `set_cursor` request")]
+    SetCursorError(#[from] SetCursorError),
+    #[error("Could not process a `release` request")]
+    ReleaseError(#[from] ReleaseError),
+}
+efrom!(WlPointerError, ClientError);
+
+#[derive(Debug, Error)]
+pub enum SetCursorError {
+    #[error("Parsing failed")]
+    ParseError(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error(transparent)]
+    WlSurfaceError(Box<WlSurfaceError>),
+}
+efrom!(SetCursorError, ParseError, MsgParserError);
+efrom!(SetCursorError, ClientError);
+efrom!(SetCursorError, WlSurfaceError);
+
+#[derive(Debug, Error)]
+pub enum ReleaseError {
+    #[error("Parsing failed")]
+    ParseError(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(ReleaseError, ParseError, MsgParserError);
+efrom!(ReleaseError, ClientError, ClientError);