wayland: implement wl_touch

docs/features.md

@@ -141,7 +141,7 @@ Jay supports the following wayland protocols:
 | ext_session_lock_manager_v1             | 1               | Yes           |
 | ext_transient_seat_manager_v1           | 1[^ts_rejected] | Yes           |
 | org_kde_kwin_server_decoration_manager  | 1               |               |
-| wl_compositor                           | 6[^no_touch]    |               |
+| wl_compositor                           | 6               |               |
 | wl_data_device_manager                  | 3               |               |
 | wl_drm                                  | 2               |               |
 | wl_output                               | 4               |               |
@@ -179,12 +179,5 @@ Jay supports the following wayland protocols:
 | zxdg_decoration_manager_v1              | 1               |               |
 | zxdg_output_manager_v1                  | 3               |               |
 
-[^no_touch]: Touch input is not supported.
 [^lsaccess]: Sandboxes can restrict access to this protocol.
 [^ts_rejected]: Seat creation is always rejected.
-
-## Missing Features
-
-The following features are currently not supported but might get implemented in the future:
-
-- Touch support.

jay-config/src/_private/client.rs

@@ -897,6 +897,10 @@ impl Client {
         self.send(&ClientMessage::SetTransformMatrix { device, matrix })
     }
 
+    pub fn set_calibration_matrix(&self, device: InputDevice, matrix: [[f32; 3]; 2]) {
+        self.send(&ClientMessage::SetCalibrationMatrix { device, matrix })
+    }
+
     pub fn set_px_per_wheel_scroll(&self, device: InputDevice, px: f64) {
         self.send(&ClientMessage::SetPxPerWheelScroll { device, px })
     }

jay-config/src/_private/ipc.rs

@@ -502,6 +502,10 @@ pub enum ClientMessage<'a> {
         connector: Option<Connector>,
         mode: TearingMode,
     },
+    SetCalibrationMatrix {
+        device: InputDevice,
+        matrix: [[f32; 3]; 2],
+    },
 }
 
 #[derive(Serialize, Deserialize, Debug)]

jay-config/src/input.rs

@@ -80,6 +80,13 @@ impl InputDevice {
         get!().set_transform_matrix(self, matrix);
     }
 
+    /// Sets the calibration matrix of the device.
+    ///
+    /// This corresponds to the libinput setting of the same name.
+    pub fn set_calibration_matrix(self, matrix: [[f32; 3]; 2]) {
+        get!().set_calibration_matrix(self, matrix);
+    }
+
     /// Returns the name of the device.
     pub fn name(self) -> String {
         get!(String::new()).device_name(self)

release-notes.md

@@ -3,6 +3,7 @@
 - Add fine-grained damage tracking.
 - Add support for adaptive sync.
 - Add support for tearing.
+- Add support for touch input.
 
 # 1.4.0 (2024-07-07)
 

src/backend.rs

@@ -167,6 +167,12 @@ pub trait InputDevice {
         None
     }
     fn set_transform_matrix(&self, matrix: TransformMatrix);
+    fn calibration_matrix(&self) -> Option<[[f32; 3]; 2]> {
+        None
+    }
+    fn set_calibration_matrix(&self, m: [[f32; 3]; 2]) {
+        let _ = m;
+    }
     fn name(&self) -> Rc<String>;
     fn dev_t(&self) -> Option<c::dev_t> {
         None
@@ -392,6 +398,27 @@ pub enum InputEvent {
         source: Option<TabletStripEventSource>,
         position: Option<f64>,
     },
+    TouchDown {
+        time_usec: u64,
+        id: i32,
+        x_normed: Fixed,
+        y_normed: Fixed,
+    },
+    TouchUp {
+        time_usec: u64,
+        id: i32,
+    },
+    TouchMotion {
+        time_usec: u64,
+        id: i32,
+        x_normed: Fixed,
+        y_normed: Fixed,
+    },
+    TouchCancel {
+        time_usec: u64,
+        id: i32,
+    },
+    TouchFrame,
 }
 
 pub enum DrmEvent {

src/backends/metal.rs

@@ -376,6 +376,7 @@ struct InputDeviceProperties {
     drag_enabled: Cell<Option<bool>>,
     drag_lock_enabled: Cell<Option<bool>>,
     natural_scrolling_enabled: Cell<Option<bool>>,
+    calibration_matrix: Cell<Option<[[f32; 3]; 2]>>,
 }
 
 #[derive(Clone)]
@@ -436,6 +437,9 @@ impl MetalInputDevice {
         if let Some(enabled) = self.desired.natural_scrolling_enabled.get() {
             self.set_natural_scrolling_enabled(enabled);
         }
+        if let Some(lh) = self.desired.calibration_matrix.get() {
+            self.set_calibration_matrix(lh);
+        }
         self.fetch_effective();
     }
 
@@ -465,6 +469,11 @@ impl MetalInputDevice {
                 .natural_scrolling_enabled
                 .set(Some(device.natural_scrolling_enabled()));
         }
+        if device.has_calibration_matrix() {
+            self.effective
+                .calibration_matrix
+                .set(Some(device.get_calibration_matrix()));
+        }
     }
 
     fn pre_pause(&self) {
@@ -721,6 +730,22 @@ impl InputDevice for MetalInputDevice {
             groups,
         }))
     }
+
+    fn calibration_matrix(&self) -> Option<[[f32; 3]; 2]> {
+        self.effective.calibration_matrix.get()
+    }
+
+    fn set_calibration_matrix(&self, m: [[f32; 3]; 2]) {
+        self.desired.calibration_matrix.set(Some(m));
+        if let Some(dev) = self.inputdev.get() {
+            if dev.device().has_calibration_matrix() {
+                dev.device().set_calibration_matrix(m);
+                self.effective
+                    .calibration_matrix
+                    .set(Some(dev.device().get_calibration_matrix()));
+            }
+        }
+    }
 }
 
 impl MetalInputDevice {

src/backends/metal/input.rs

@@ -121,6 +121,11 @@ impl MetalBackend {
             c::LIBINPUT_EVENT_TABLET_PAD_BUTTON => self.handle_tablet_pad_button(event),
             c::LIBINPUT_EVENT_TABLET_PAD_RING => self.handle_tablet_pad_ring(event),
             c::LIBINPUT_EVENT_TABLET_PAD_STRIP => self.handle_tablet_pad_strip(event),
+            c::LIBINPUT_EVENT_TOUCH_DOWN => self.handle_touch_down(event),
+            c::LIBINPUT_EVENT_TOUCH_UP => self.handle_touch_up(event),
+            c::LIBINPUT_EVENT_TOUCH_MOTION => self.handle_touch_motion(event),
+            c::LIBINPUT_EVENT_TOUCH_CANCEL => self.handle_touch_cancel(event),
+            c::LIBINPUT_EVENT_TOUCH_FRAME => self.handle_touch_frame(event),
             _ => {}
         }
     }
@@ -539,4 +544,45 @@ impl MetalBackend {
             },
         });
     }
+
+    fn handle_touch_down(self: &Rc<Self>, event: LibInputEvent) {
+        let (event, dev) = unpack!(self, event, touch_event);
+        dev.event(InputEvent::TouchDown {
+            time_usec: event.time_usec(),
+            id: event.seat_slot(),
+            x_normed: Fixed::from_f64(event.x_transformed(1)),
+            y_normed: Fixed::from_f64(event.y_transformed(1)),
+        })
+    }
+
+    fn handle_touch_up(self: &Rc<Self>, event: LibInputEvent) {
+        let (event, dev) = unpack!(self, event, touch_event);
+        dev.event(InputEvent::TouchUp {
+            time_usec: event.time_usec(),
+            id: event.seat_slot(),
+        })
+    }
+
+    fn handle_touch_motion(self: &Rc<Self>, event: LibInputEvent) {
+        let (event, dev) = unpack!(self, event, touch_event);
+        dev.event(InputEvent::TouchMotion {
+            time_usec: event.time_usec(),
+            id: event.seat_slot(),
+            x_normed: Fixed::from_f64(event.x_transformed(1)),
+            y_normed: Fixed::from_f64(event.y_transformed(1)),
+        })
+    }
+
+    fn handle_touch_cancel(self: &Rc<Self>, event: LibInputEvent) {
+        let (event, dev) = unpack!(self, event, touch_event);
+        dev.event(InputEvent::TouchCancel {
+            time_usec: event.time_usec(),
+            id: event.seat_slot(),
+        })
+    }
+
+    fn handle_touch_frame(self: &Rc<Self>, event: LibInputEvent) {
+        let (_, dev) = unpack!(self, event, touch_event);
+        dev.event(InputEvent::TouchFrame)
+    }
 }

src/cli/input.rs

@@ -131,6 +131,8 @@ pub enum DeviceCommand {
     MapToOutput(MapToOutputArgs),
     /// Removes the mapping from this device to an output.
     RemoveMapping,
+    /// Set the calibration matrix.
+    SetCalibrationMatrix(SetCalibrationMatrixArgs),
 }
 
 #[derive(ValueEnum, Debug, Clone)]
@@ -200,6 +202,16 @@ pub struct SetTransformMatrixArgs {
     pub m22: f64,
 }
 
+#[derive(Args, Debug, Clone)]
+pub struct SetCalibrationMatrixArgs {
+    pub m00: f32,
+    pub m01: f32,
+    pub m02: f32,
+    pub m10: f32,
+    pub m11: f32,
+    pub m12: f32,
+}
+
 #[derive(Args, Debug, Clone)]
 pub struct MapToOutputArgs {
     /// The output to map to.
@@ -272,6 +284,7 @@ struct InputDevice {
     pub px_per_wheel_scroll: Option<f64>,
     pub transform_matrix: Option<[[f64; 2]; 2]>,
     pub output: Option<String>,
+    pub calibration_matrix: Option<[[f32; 3]; 2]>,
 }
 
 #[derive(Clone, Debug, Default)]
@@ -595,6 +608,21 @@ impl Input {
                     output: None,
                 });
             }
+            DeviceCommand::SetCalibrationMatrix(a) => {
+                self.handle_error(input, |e| {
+                    eprintln!("Could not modify the calibration matrix: {}", e);
+                });
+                tc.send(jay_input::SetCalibrationMatrix {
+                    self_id: input,
+                    id: args.device,
+                    m00: a.m00,
+                    m01: a.m01,
+                    m02: a.m02,
+                    m10: a.m10,
+                    m11: a.m11,
+                    m12: a.m12,
+                });
+            }
         }
         tc.round_trip().await;
     }
@@ -728,6 +756,9 @@ impl Input {
         if let Some(v) = &device.output {
             println!("{prefix}  mapped to output: {}", v);
         }
+        if let Some(v) = &device.calibration_matrix {
+            println!("{prefix}  calibration matrix: {:?}", v);
+        }
     }
 
     async fn get(self: &Rc<Self>, input: JayInputId) -> Data {
@@ -792,6 +823,7 @@ impl Input {
                 px_per_wheel_scroll: is_pointer.then_some(msg.px_per_wheel_scroll),
                 transform_matrix: uapi::pod_read(msg.transform_matrix).ok(),
                 output: None,
+                calibration_matrix: None,
             });
         });
         jay_input::InputDeviceOutput::handle(tc, input, data.clone(), |data, msg| {
@@ -800,6 +832,13 @@ impl Input {
                 last.output = Some(msg.output.to_string());
             }
         });
+        jay_input::CalibrationMatrix::handle(tc, input, data.clone(), |data, msg| {
+            let mut data = data.borrow_mut();
+            if let Some(last) = data.input_device.last_mut() {
+                last.calibration_matrix =
+                    Some([[msg.m00, msg.m01, msg.m02], [msg.m10, msg.m11, msg.m12]]);
+            }
+        });
         tc.round_trip().await;
         let x = data.borrow_mut().clone();
         x

src/cli/seat_test.rs

@@ -15,7 +15,8 @@ use {
                 TabletPadStripSource, TabletPadStripStop, TabletToolButton, TabletToolDistance,
                 TabletToolDown, TabletToolFrame, TabletToolMotion, TabletToolPressure,
                 TabletToolProximityIn, TabletToolProximityOut, TabletToolRotation,
-                TabletToolSlider, TabletToolTilt, TabletToolUp, TabletToolWheel,
+                TabletToolSlider, TabletToolTilt, TabletToolUp, TabletToolWheel, TouchCancel,
+                TouchDown, TouchMotion, TouchUp,
             },
         },
     },
@@ -583,6 +584,54 @@ async fn run(seat_test: Rc<SeatTest>) {
         }
         println!();
     });
+    let st = seat_test.clone();
+    TouchDown::handle(tc, se, (), move |_, ev| {
+        if all || ev.seat == seat {
+            if all {
+                print!("Seat: {}, ", st.name(ev.seat));
+            }
+            println!(
+                "Time: {:.4}, Touch: {}, Down: {}x{}",
+                time(ev.time_usec),
+                ev.id,
+                ev.x,
+                ev.y
+            );
+        }
+    });
+    let st = seat_test.clone();
+    TouchUp::handle(tc, se, (), move |_, ev| {
+        if all || ev.seat == seat {
+            if all {
+                print!("Seat: {}, ", st.name(ev.seat));
+            }
+            println!("Time: {:.4}, Touch: {}, Up", time(ev.time_usec), ev.id);
+        }
+    });
+    let st = seat_test.clone();
+    TouchMotion::handle(tc, se, (), move |_, ev| {
+        if all || ev.seat == seat {
+            if all {
+                print!("Seat: {}, ", st.name(ev.seat));
+            }
+            println!(
+                "Time: {:.4}, Touch: {} Motion: {}x{}",
+                time(ev.time_usec),
+                ev.id,
+                ev.x,
+                ev.y
+            );
+        }
+    });
+    let st = seat_test.clone();
+    TouchCancel::handle(tc, se, (), move |_, ev| {
+        if all || ev.seat == seat {
+            if all {
+                print!("Seat: {}, ", st.name(ev.seat));
+            }
+            println!("Time: {:.4}, Touch: {}, Cancel", time(ev.time_usec), ev.id);
+        }
+    });
     pending::<()>().await;
 }
 

src/config/handler.rs

@@ -689,6 +689,16 @@ impl ConfigProxyHandler {
         Ok(())
     }
 
+    fn handle_set_calibration_matrix(
+        &self,
+        device: InputDevice,
+        matrix: [[f32; 3]; 2],
+    ) -> Result<(), CphError> {
+        let dev = self.get_device_handler_data(device)?;
+        dev.device.set_calibration_matrix(matrix);
+        Ok(())
+    }
+
     fn handle_get_workspace(&self, name: &str) {
         let name = Rc::new(name.to_owned());
         let ws = match self.workspaces_by_name.get(&name) {
@@ -1897,6 +1907,9 @@ impl ConfigProxyHandler {
             ClientMessage::SetTearingMode { connector, mode } => self
                 .handle_set_tearing_mode(connector, mode)
                 .wrn("set_tearing_mode")?,
+            ClientMessage::SetCalibrationMatrix { device, matrix } => self
+                .handle_set_calibration_matrix(device, matrix)
+                .wrn("set_calibration_matrix")?,
         }
         Ok(())
     }