5 files changed, 47 insertions, 0 deletions
diff --git a/core/src/keyboard.rs b/core/src/keyboard.rs
new file mode 100644
index 00000000..d98b2989
--- /dev/null
+++ b/core/src/keyboard.rs
@@ -0,0 +1,6 @@
+//! Reuse basic keyboard types.
+mod key_code;
+mod modifiers_state;
+
+pub use key_code::KeyCode;
+pub use modifiers_state::ModifiersState;
diff --git a/native/src/input/keyboard/key_code.rs b/core/src/keyboard/key_code.rs
index 26020a57..26020a57 100644
--- a/native/src/input/keyboard/key_code.rs
+++ b/core/src/keyboard/key_code.rs
diff --git a/core/src/keyboard/modifiers_state.rs b/core/src/keyboard/modifiers_state.rs
new file mode 100644
index 00000000..4d24266f
--- /dev/null
+++ b/core/src/keyboard/modifiers_state.rs
@@ -0,0 +1,30 @@
+/// The current state of the keyboard modifiers.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub struct ModifiersState {
+    /// Whether a shift key is pressed
+    pub shift: bool,
+
+    /// Whether a control key is pressed
+    pub control: bool,
+
+    /// Whether an alt key is pressed
+    pub alt: bool,
+
+    /// Whether a logo key is pressed (e.g. windows key, command key...)
+    pub logo: bool,
+}
+
+impl ModifiersState {
+    /// Returns true if the current [`ModifiersState`] has at least the same
+    /// modifiers enabled as the given value, and false otherwise.
+    ///
+    /// [`ModifiersState`]: struct.ModifiersState.html
+    pub fn matches(&self, modifiers: ModifiersState) -> bool {
+        let shift = !modifiers.shift || self.shift;
+        let control = !modifiers.control || self.control;
+        let alt = !modifiers.alt || self.alt;
+        let logo = !modifiers.logo || self.logo;
+
+        shift && control && alt && logo
+    }
+}
diff --git a/core/src/lib.rs b/core/src/lib.rs
index ea5e8b43..c2887a0b 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -14,6 +14,7 @@
 #![deny(unused_results)]
 #![forbid(unsafe_code)]
 #![forbid(rust_2018_idioms)]
+pub mod keyboard;
 
 mod align;
 mod background;
diff --git a/core/src/point.rs b/core/src/point.rs
index b55f5099..43ee2143 100644
--- a/core/src/point.rs
+++ b/core/src/point.rs
@@ -22,6 +22,16 @@ impl Point {
     pub const fn new(x: f32, y: f32) -> Self {
         Self { x, y }
     }
+
+    /// Computes the distance to another [`Point`].
+    ///
+    /// [`Point`]: struct.Point.html
+    pub fn distance(&self, to: Point) -> f32 {
+        let a = self.x - to.x;
+        let b = self.y - to.y;
+
+        a.hypot(b)
+    }
 }
 
 impl From<[f32; 2]> for Point {