cbf-compositor 0.1.0-alpha.9

use crate::model::{
    CompositionItemId, CompositorWindowId, HitTestCoordinateSpace, HitTestRegion,
    HitTestRegionMode, Rect, WindowCompositionSpec,
};

/// Declarative scene updates applied to a compositor-managed window.
#[derive(Debug, Clone)]
pub enum CompositionCommand {
    /// Replace the entire scene contents for a window.
    SetWindowComposition {
        /// Window to update.
        window_id: CompositorWindowId,
        /// New composition snapshot for the window.
        composition: WindowCompositionSpec,
    },
    /// Update only the bounds of one existing scene item.
    UpdateItemBounds {
        /// Window that owns the item.
        window_id: CompositorWindowId,
        /// Item to move or resize.
        item_id: CompositionItemId,
        /// New bounds in window coordinates.
        bounds: Rect,
    },
    /// Update only the visibility of one existing scene item.
    SetItemVisibility {
        /// Window that owns the item.
        window_id: CompositorWindowId,
        /// Item to show or hide.
        item_id: CompositionItemId,
        /// New visibility state.
        visible: bool,
    },
    /// Replace the cached hit-test snapshot for one item.
    SetItemHitTestRegions {
        /// Window that owns the item.
        window_id: CompositorWindowId,
        /// Item that should receive the snapshot.
        item_id: CompositionItemId,
        /// Monotonic snapshot identifier used to ignore stale updates.
        snapshot_id: u64,
        /// Coordinate space used by the provided regions.
        coordinate_space: HitTestCoordinateSpace,
        /// How the listed regions should participate in hit-testing.
        mode: HitTestRegionMode,
        /// Regions interpreted according to `mode`.
        regions: Vec<HitTestRegion>,
    },
    /// Remove one scene item from a window.
    RemoveItem {
        /// Window that owns the item.
        window_id: CompositorWindowId,
        /// Item to remove.
        item_id: CompositionItemId,
    },
}