i genuinely have no idea what i changed. i probably added stuff.

src/ev_callback_data.rs

@@ -81,7 +81,11 @@ impl EvCallbackData {
     }
 }
 
-fn calculate_delay(server_time: xlib::Time, last_event: xlib::Time, max_delay: Option<xlib::Time>) -> xlib::Time {
+fn calculate_delay(
+    server_time: xlib::Time,
+    last_event: xlib::Time,
+    max_delay: Option<xlib::Time>,
+) -> xlib::Time {
     if let Some(max) = max_delay {
         let max = max as u64;
         let delay = server_time - last_event;

src/macro_writer.rs

@@ -1,5 +1,5 @@
 use crate::Instructions;
-use std::{io, fs};
+use std::{fs, io};
 
 pub struct MacroWriter {
     outfile: Box<dyn io::Write>,
@@ -9,8 +9,7 @@ pub struct MacroWriter {
 impl MacroWriter {
     pub fn new(outfile: Option<std::path::PathBuf>, ignore_delay_capturing: bool) -> Self {
         Self {
-            outfile: 
+            outfile: if let Some(outfile) = outfile {
-                if let Some(outfile) = outfile {
                 Box::new(fs::File::create(outfile).expect("Failed to create output file"))
             } else {
                 Box::new(io::stdout())
@@ -21,7 +20,7 @@ impl MacroWriter {
 
     pub fn write(&mut self, instruction: Instructions) {
         if self.ignore_delay_capturing {
-            if let Instructions::Delay(_) = instruction { }
+            if let Instructions::Delay(_) = instruction {}
         }
 
         writeln!(&mut self.outfile, "{}", instruction)

src/xwrap/display.rs

@@ -1,4 +1,4 @@
-use std::{env, ffi, ptr, ops};
+use std::{env, ffi, ops, ptr};
 
 use x11::xlib::{self, BadGC};
 
@@ -26,7 +26,7 @@ pub enum Grabbables {
     Pointer,
 }
 
-impl std::fmt::Display for Grabbables{
+impl std::fmt::Display for Grabbables {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             Grabbables::Keyboard => write!(f, "keyboard"),
@@ -50,6 +50,33 @@ impl From<GrabMode> for i32 {
     }
 }
 
+/// The event mode for XAllowEvents
+pub enum EventMode {
+    AsyncPointer, 
+    SyncPointer, 
+    AsyncKeyboard, 
+    SyncKeyboard, 
+    ReplayPointer, 
+    ReplayKeyboard, 
+    AsyncBoth,
+    SyncBoth
+}
+
+impl From<EventMode> for i32 {
+    fn from(event_mode: EventMode) -> Self {
+        match event_mode {
+            EventMode::AsyncPointer => xlib::AsyncPointer, 
+            EventMode::SyncPointer => xlib::SyncPointer, 
+            EventMode::AsyncKeyboard => xlib::AsyncKeyboard, 
+            EventMode::SyncKeyboard => xlib::SyncKeyboard, 
+            EventMode::ReplayPointer => xlib::ReplayPointer, 
+            EventMode::ReplayKeyboard => xlib::ReplayKeyboard, 
+            EventMode::AsyncBoth => xlib::AsyncBoth,
+            EventMode::SyncBoth => xlib::SyncBoth,
+        }
+    }
+}
+
 impl Display {
     /// Call XOpenDisplay to open a connection to the X Server.
     /// If `display_name` is `None`, the value of the `DISPLAY` environment variable will be used.
@@ -99,26 +126,20 @@ impl Display {
     /// This should be used to retrieve the screen number in applications that'll only use a single
     /// screen.
     pub fn default_screen_nr(&self) -> i32 {
-        unsafe {
+        unsafe { xlib::XDefaultScreen(self.ptr) }
-            xlib::XDefaultScreen(self.ptr)
-        }
     }
 
     /// Gets the default screen
     pub fn default_screen(&self) -> screen::Screen {
         screen::Screen {
-            ptr: unsafe {
+            ptr: unsafe { xlib::XDefaultScreenOfDisplay(self.ptr) },
-                xlib::XDefaultScreenOfDisplay(self.ptr)
-            }
         }
     }
 
     /// Gets the root window of the default screen
     pub fn default_root_window(&self) -> window::Window {
         window::Window {
-            wid: unsafe {
+            wid: unsafe { xlib::XDefaultRootWindow(self.ptr) },
-                xlib::XDefaultRootWindow(self.ptr)
-            }
         }
     }
 
@@ -133,7 +154,17 @@ impl Display {
         }
     }
 
-    pub fn grab_keyboard( &mut self, grab_window: window::Window, owner_events: bool, pointer_mode: GrabMode, keyboard_mode: GrabMode, time:xlib::Time) -> Result<()> {
+    /// Performs an active Grab on the keyboard. Further key events are only reported to the
+    /// grabbing client.
+    pub fn grab_keyboard(
+        &mut self,
+        grab_window: window::Window,
+        owner_events: bool,
+        pointer_mode: GrabMode,
+        keyboard_mode: GrabMode,
+        time: xlib::Time,
+    ) -> Result<()> {
+        if let None = self.keyboard_grab {
             match unsafe {
                 xlib::XGrabKeyboard(
                     self.ptr,
@@ -141,27 +172,51 @@ impl Display {
                     owner_events.into(),
                     pointer_mode.into(),
                     keyboard_mode.into(),
-                time
+                    time,
                 )
             } {
                 xlib::GrabSuccess => {
                     self.keyboard_grab = Some(GrabbablesModes {
                         keyboard_mode,
-                    pointer_mode 
+                        pointer_mode,
                     });
 
                     Ok(())
-            },
+                }
-            xlib::AlreadyGrabbed => todo!(),
+                xlib::AlreadyGrabbed => 
-            xlib::GrabInvalidTime => todo!(),
+                    Err(error::XError::XAlreadyGrabbed(Grabbables::Keyboard).into()),
-            xlib::GrabNotViewable => todo!(),
+                xlib::GrabInvalidTime => 
-            xlib::GrabFrozen => todo!(),
+                    Err(error::XError::XGrabInvalidTime.into()),
-            _ => todo!()
+                xlib::GrabNotViewable => 
+                    Err(error::XError::XGrabNotViewable.into()),
+                xlib::GrabFrozen => 
+                    Err(error::XError::XGrabFrozen(Grabbables::Keyboard).into()),
+                code => Err(error::XError::UnknownError(code).into()),
+            }
+        } else {
+            Err(error::XError::AlreadyGrabbed(Grabbables::Keyboard).into())
+        }
+    }
+    
+    /// Ends the active keyboard grab.
+    pub fn ungrab_keyboard(&self, time: xlib::Time) -> Result<()>{
+        if let Some(_) = self.keyboard_grab {
+            unsafe {
+                xlib::XUngrabKeyboard(self.ptr, time);
+                Ok(())
+            }
+        } else {
+            Err(error::XError::NotGrabbed(Grabbables::Keyboard).into())
+        }
+    }
+
+    pub fn allow_events(&self, event_mode: EventMode, time: xlib::Time) {
+        unsafe {
+            xlib::XAllowEvents(self.ptr, event_mode.into(), time);
         }
     }
 }
 
-
 impl Drop for Display {
     fn drop(&mut self) {
         if unsafe { xlib::XCloseDisplay(self.ptr) } == BadGC.into() {

src/xwrap/error.rs

@@ -11,10 +11,13 @@ pub enum XError {
     DisplayKeycodesError,
     InvalidKeycodeError(xlib::KeyCode, ops::Range<i32>),
     AlreadyGrabbed(display::Grabbables),
+    NotGrabbed(display::Grabbables),
     XAlreadyGrabbed(display::Grabbables),
     XGrabFrozen(display::Grabbables),
     XGrabInvalidTime,
     XGrabNotViewable,
+    XEventConversionError { event_type: i32 },
+    UnknownError(i32),
 }
 
 impl std::fmt::Display for XError {
@@ -25,20 +28,32 @@ impl std::fmt::Display for XError {
             match self {
                 XError::OpenDisplayError(display_name) =>
                     format!("error when opening display '{}'", display_name),
-                XError::DisplayKeycodesError => 
+                XError::DisplayKeycodesError => String::from("error when running XDisplayKeycodes"),
-                    String::from("error when running XDisplayKeycodes"),
                 XError::InvalidKeycodeError(code, range) =>
                     format!("keycode {} outside of range {:?}", code, range),
-                XError::AlreadyGrabbed(thing_attempted_to_grab) => 
+                XError::AlreadyGrabbed(thing_attempted_to_grab) => format!(
-                    format!("this display already grabbed the {}", thing_attempted_to_grab),
+                    "this display already grabbed the {}",
-                XError::XAlreadyGrabbed(thing_attempted_to_grab) => 
+                    thing_attempted_to_grab
-                    format!("{} is already actively grabbed by another client", thing_attempted_to_grab),
+                ),
-                XError::XGrabFrozen(thing_attempted_to_grab) => 
+                XError::NotGrabbed(thing_attempted_to_ungrab) => format!( 
-                    format!("{} is frozen by an active grab of another client", thing_attempted_to_grab),
+                    "couldn't ungrab the {} because it wasn't grabbed", 
-                XError::XGrabInvalidTime => 
+                    thing_attempted_to_ungrab
-                    String::from("invalid grab time"),
+                ),
-                XError::XGrabNotViewable => 
+                XError::XAlreadyGrabbed(thing_attempted_to_grab) => format!(
-                    String::from("grab_window is not viewable"),
+                    "{} is already actively grabbed by another client",
+                    thing_attempted_to_grab
+                ),
+                XError::XGrabFrozen(thing_attempted_to_grab) => format!(
+                    "{} is frozen by an active grab of another client",
+                    thing_attempted_to_grab
+                ),
+                XError::XGrabInvalidTime => String::from("invalid grab time"),
+                XError::XGrabNotViewable => String::from("grab_window is not viewable"),
+                XError::XEventConversionError { event_type } => format!(
+                    "invalid event type: {}", 
+                    event_type
+                ),
+                XError::UnknownError(code) => format!("unknown error code was returned: {}", code),
             }
         )
     }

src/xwrap/event.rs

@@ -0,0 +1,166 @@
+use x11::xlib::{self, XKeyEvent};
+
+use anyhow::Result;
+
+use super::{display, window, key, error};
+
+pub type Vec2<T> = (T, T);
+
+pub enum Event {
+    // only for now relevant event types
+    KeyPressEvent(KeyEvent),
+    KeyReleaseEvent(KeyEvent),
+    ButtonPressEvent(ButtonEvent),
+    ButtonReleaseEvent(ButtonEvent),
+    MotionEvent(MotionEvent),
+
+    ErrorEvent(ErrorEvent),
+    CrossingEvent(CrossingEvent),
+    FocusChangeEvent(FocusChangeEvent),
+    ExposeEvent(ExposeEvent),
+    GraphicsExposeEvent(GraphicsExposeEvent),
+    NoExposeEvent(NoExposeEvent),
+    VisibilityEvent(VisibilityEvent),
+    CreateWindowEvent(CreateWindowEvent),
+    DestroyWindowEvent(DestroyWindowEvent),
+    UnmapEvent(UnmapEvent),
+    MapEvent(MapEvent),
+    MapRequestEvent(MapRequestEvent),
+    ReparentEvent(ReparentEvent),
+    ConfigureEvent(ConfigureEvent),
+    GravityEvent(GravityEvent),
+    ResizeRequestEvent(ResizeRequestEvent),
+    ConfigureRequestEvent(ConfigureRequestEvent),
+    CirculateEvent(CirculateEvent),
+    CirculateRequestEvent(CirculateRequestEvent),
+    PropertyEvent(PropertyEvent),
+    SelectionClearEvent(SelectionClearEvent),
+    SelectionRequestEvent(SelectionRequestEvent),
+    SelectionEvent(SelectionEvent),
+    ColormapEvent(ColormapEvent),
+    ClientMessageEvent(ClientMessageEvent),
+    MappingEvent(MappingEvent),
+    KeymapEvent(KeymapEvent),
+}
+
+impl TryFrom<xlib::XEvent> for Event {
+    type Error = error::XError;
+    fn try_from(ev_union: xlib::XEvent) -> Result<Self, Self::Error> {
+        match ev_union.get_type() {
+            xlib::KeyPress => ,
+            xlib::KeyRelease => ,
+            xlib::ButtonPress => ,
+            xlib::ButtonRelease => ,
+            xlib::MotionNotify => ,
+        }
+    }
+}
+
+struct GenericEventData {
+    serial_nr: u64,
+    sent_by_different_client: bool,
+    source_display_ptr: *mut xlib::_XDisplay,
+    window: window::Window,
+}
+
+pub enum SwitchState {
+    Pressed,
+    Released
+}
+
+pub struct KeyEvent {
+    generic: GenericEventData,
+    root: window::Window,
+    subwindow: window::Window,
+    time: xlib::Time,
+    pointer_pos: Vec2<i32>,
+    pointer_pos_root: Vec2<i32>,
+    state: SwitchState,
+    key: key::Key,
+    same_screen: bool
+}
+
+impl TryFrom<xlib::XEvent> for KeyEvent {
+    type Error = error::XError;
+    fn try_from(raw_ev: xlib::XEvent) -> Result<Self, Self::Error> {
+        let state = match raw_ev.get_type() {
+            xlib::KeyPress => SwitchState::Pressed,
+            xlib::KeyRelease => SwitchState::Released,
+            ev_type => return Err(error::XError::XEventConversionError { event_type: ev_type })
+        };
+
+        let raw_ev = XKeyEvent::from(raw_ev);
+
+        Ok(Self { 
+            generic: GenericEventData { 
+                serial_nr: raw_ev.serial, 
+                sent_by_different_client: raw_ev.send_event != 0, 
+                // make conversion method for display from ptr that maybe should try to check???
+                // how would i even do this safely 
+                source_display_ptr: raw_ev.display, 
+                window: window::Window { wid: raw_ev.window },
+            }, 
+            root: window::Window { wid: raw_ev.root }, 
+            subwindow: window::Window { wid: raw_ev.subwindow } ,
+            time: raw_ev.time, 
+            pointer_pos: (raw_ev.x, raw_ev.y),
+            pointer_pos_root: (raw_ev.x_root, raw_ev.y_root), 
+            state: raw_ev.state, 
+            key: key::Key { code: raw_ev.keycode }, 
+            same_screen: raw_ev.same_screen != 0
+        })
+    }
+}
+
+pub struct ButtonEvent {
+    generic: GenericEventData,
+    root: window::Window,
+    time: xlib::Time,
+    pointer_pos: Vec2<i32>,
+    pointer_pos_root: Vec2<i32>,
+    button: u32,
+    state: SwitchState,
+    same_screen: bool
+}
+
+// change fields and data for this and other events according to xlib doc p. 188-189
+pub struct MotionEvent {
+    generic: GenericEventData,
+    root: window::Window,
+    subwindow: window::Window,
+    time: xlib::Time,
+    pointer_pos: Vec2<i32>,
+    pointer_pos_root: Vec2<i32>,
+    state: u32, 
+    is_hint: u32,
+    same_screen: bool,
+}
+
+// TODO: make these into cool event stuff too
+pub struct ErrorEvent {}
+pub struct CrossingEvent {}
+pub struct FocusChangeEvent {}
+pub struct ExposeEvent {}
+pub struct GraphicsExposeEvent {}
+pub struct NoExposeEvent {}
+pub struct VisibilityEvent {}
+pub struct CreateWindowEvent {}
+pub struct DestroyWindowEvent {}
+pub struct UnmapEvent {}
+pub struct MapEvent {}
+pub struct MapRequestEvent {}
+pub struct ReparentEvent {}
+pub struct ConfigureEvent {}
+pub struct GravityEvent {}
+pub struct ResizeRequestEvent {}
+pub struct ConfigureRequestEvent {}
+pub struct CirculateEvent {}
+pub struct CirculateRequestEvent {}
+pub struct PropertyEvent {}
+pub struct SelectionClearEvent {}
+pub struct SelectionRequestEvent {}
+pub struct SelectionEvent {}
+pub struct ColormapEvent {}
+pub struct ClientMessageEvent {}
+pub struct MappingEvent {}
+pub struct KeymapEvent {}

src/xwrap/mod.rs

@@ -1,5 +1,6 @@
 pub mod display;
-pub mod screen;
-pub mod window;
 pub mod error;
 pub mod key;
+pub mod screen;
+pub mod window;
+pub mod event;