add wlx-common lib, move GeneralConfig into it

wlx-common/src/windowing.rs

@@ -0,0 +1,60 @@
+use glam::Affine3A;
+use serde::{Deserialize, Serialize};
+
+use crate::common::LeftRight;
+
+#[derive(Clone, Copy, Debug, Default, Serialize, Deserialize)]
+pub enum Positioning {
+	/// Stays in place, recenters relative to HMD
+	#[default]
+	Floating,
+	/// Stays in place, recenters relative to anchor. Follows anchor during anchor grab.
+	Anchored,
+	/// Same as anchor but paused due to interaction
+	AnchoredPaused,
+	/// Stays in place, no recentering
+	Static,
+	/// Following HMD
+	FollowHead { lerp: f32 },
+	/// Normally follows HMD, but paused due to interaction
+	FollowHeadPaused { lerp: f32 },
+	/// Following hand
+	FollowHand { hand: LeftRight, lerp: f32 },
+	/// Normally follows hand, but paused due to interaction
+	FollowHandPaused { hand: LeftRight, lerp: f32 },
+}
+
+impl Positioning {
+	pub const fn moves_with_space(self) -> bool {
+		matches!(self, Self::Floating | Self::Anchored | Self::Static)
+	}
+}
+
+// Contains the window state for a given set
+#[derive(Clone, Serialize, Deserialize)]
+#[serde(default)]
+pub struct OverlayWindowState {
+	pub transform: Affine3A,
+	pub alpha: f32,
+	pub grabbable: bool,
+	pub interactable: bool,
+	pub positioning: Positioning,
+	pub curvature: Option<f32>,
+	pub additive: bool,
+	pub saved_transform: Option<Affine3A>,
+}
+
+impl Default for OverlayWindowState {
+	fn default() -> Self {
+		Self {
+			grabbable: false,
+			interactable: false,
+			alpha: 1.0,
+			positioning: Positioning::Floating,
+			curvature: None,
+			transform: Affine3A::IDENTITY,
+			additive: false,
+			saved_transform: None,
+		}
+	}
+}