035eebb19a
Old winit was using linux scancodes, so this should make it backward compatible with itself.
30 lines
1.2 KiB
Rust
30 lines
1.2 KiB
Rust
#![cfg(any(windows_platform, macos_platform, x11_platform, wayland_platform))]
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use crate::keyboard::KeyCode;
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// TODO: Describe what this value contains for each platform
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/// Additional methods for the [`KeyCode`] type that allow the user to access the platform-specific
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/// scancode.
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///
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/// [`KeyCode`]: crate::keyboard::KeyCode
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pub trait KeyCodeExtScancode {
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/// The raw value of the platform-specific physical key identifier.
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///
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/// Returns `Some(key_id)` if the conversion was succesful; returns `None` otherwise.
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///
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/// ## Platform-specific
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/// - **Windows:** A 16bit extended scancode
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/// - **Wayland/X11**: A 32-bit linux scancode, which is X11/Wayland keycode subtracted by 8.
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fn to_scancode(self) -> Option<u32>;
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/// Constructs a `KeyCode` from a platform-specific physical key identifier.
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///
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/// Note that this conversion may be lossy, i.e. converting the returned `KeyCode` back
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/// using `to_scancode` might not yield the original value.
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///
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/// ## Platform-specific
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/// - **Wayland/X11**: A 32-bit linux scancode. When building from X11/Wayland keycode subtract
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/// `8` to get the value you wanted.
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fn from_scancode(scancode: u32) -> KeyCode;
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}
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