Move reusable mouse types to iced_core

core/src/button_state.rs

@@ -0,0 +1,9 @@
+/// The state of a button.
+#[derive(Debug, Hash, Ord, PartialOrd, PartialEq, Eq, Clone, Copy)]
+pub enum ButtonState {
+    /// The button is pressed.
+    Pressed,
+
+    /// The button is __not__ pressed.
+    Released,
+}

core/src/lib.rs

@@ -15,9 +15,11 @@
 #![forbid(unsafe_code)]
 #![forbid(rust_2018_idioms)]
 pub mod keyboard;
+pub mod mouse;
 
 mod align;
 mod background;
+mod button_state;
 mod color;
 mod font;
 mod length;
@@ -28,6 +30,7 @@ mod vector;
 
 pub use align::{Align, HorizontalAlignment, VerticalAlignment};
 pub use background::Background;
+pub use button_state::ButtonState;
 pub use color::Color;
 pub use font::Font;
 pub use length::Length;

core/src/mouse.rs

@@ -0,0 +1,6 @@
+//! Reuse basic mouse types.
+mod button;
+mod event;
+
+pub use button::Button;
+pub use event::{Event, ScrollDelta};

core/src/mouse/button.rs

@@ -0,0 +1,15 @@
+/// The button of a mouse.
+#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
+pub enum Button {
+    /// The left mouse button.
+    Left,
+
+    /// The right mouse button.
+    Right,
+
+    /// The middle (wheel) button.
+    Middle,
+
+    /// Some other button.
+    Other(u8),
+}

core/src/mouse/event.rs

@@ -0,0 +1,61 @@
+use super::Button;
+use crate::ButtonState;
+
+/// A mouse event.
+///
+/// _**Note:** This type is largely incomplete! If you need to track
+/// additional events, feel free to [open an issue] and share your use case!_
+///
+/// [open an issue]: https://github.com/hecrj/iced/issues
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum Event {
+    /// The mouse cursor entered the window.
+    CursorEntered,
+
+    /// The mouse cursor left the window.
+    CursorLeft,
+
+    /// The mouse cursor was moved
+    CursorMoved {
+        /// The X coordinate of the mouse position
+        x: f32,
+
+        /// The Y coordinate of the mouse position
+        y: f32,
+    },
+
+    /// A mouse button was pressed or released.
+    Input {
+        /// The button identifier
+        button: Button,
+
+        /// The state of the button
+        state: ButtonState,
+    },
+
+    /// The mouse wheel was scrolled.
+    WheelScrolled {
+        /// The scroll movement.
+        delta: ScrollDelta,
+    },
+}
+
+/// A scroll movement.
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum ScrollDelta {
+    /// A line-based scroll movement
+    Lines {
+        /// The number of horizontal lines scrolled
+        x: f32,
+
+        /// The number of vertical lines scrolled
+        y: f32,
+    },
+    /// A pixel-based scroll movement
+    Pixels {
+        /// The number of horizontal pixels scrolled
+        x: f32,
+        /// The number of vertical pixels scrolled
+        y: f32,
+    },
+}