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feat(layers): add native state manager

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Replace session-only layer snapshots with drawing-backed DWG and DXF states, exposed through the ribbon and LAYERSTATE commands.\n\nCloses #562
This commit is contained in:
Hakan Seven 2026-07-29 18:00:41 +03:00
commit 1e624cc6b7
12 changed files with 563 additions and 84 deletions
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57
src/app/document.rs
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@ -102,60 +102,6 @@ fn default_role_for(component: DynComponent) -> crate::command::DynRole {
// ── Per-document tab state ─────────────────────────────────────────────────
/// One layer's display state, captured and restored by LAYERSTATE.
#[derive(Clone)]
pub(super) struct LayerSnap {
pub name: String,
pub off: bool,
pub frozen: bool,
pub locked: bool,
pub color: acadrust::types::Color,
pub line_type: String,
pub line_weight: acadrust::types::LineWeight,
}
impl DocumentTab {
/// Snapshot every layer's current display state under `name` (overwrites
/// any existing state of that name).
pub(super) fn save_layer_state(&mut self, name: &str) {
let snaps: Vec<LayerSnap> = self
.scene
.document
.layers
.iter()
.map(|l| LayerSnap {
name: l.name.clone(),
off: l.flags.off,
frozen: l.flags.frozen,
locked: l.flags.locked,
color: l.color.clone(),
line_type: l.line_type.clone(),
line_weight: l.line_weight.clone(),
})
.collect();
self.layer_states.insert(name.to_string(), snaps);
}
/// Reapply the saved state `name` to the matching layers; returns the number
/// of layers updated, or `None` if no such state exists.
pub(super) fn restore_layer_state(&mut self, name: &str) -> Option<usize> {
let snaps = self.layer_states.get(name)?.clone();
let mut applied = 0usize;
for s in &snaps {
if let Some(l) = self.scene.document.layers.get_mut(&s.name) {
l.flags.off = s.off;
l.flags.frozen = s.frozen;
l.flags.locked = s.locked;
l.color = s.color.clone();
l.line_type = s.line_type.clone();
l.line_weight = s.line_weight.clone();
applied += 1;
}
}
Some(applied)
}
}
pub(super) struct DocumentTab {
/// Stable identity across tab insert/remove operations. Background work
/// must never target a tab by its transient vector index.
@ -221,8 +167,6 @@ pub(super) struct DocumentTab {
pub(super) dyn_active: usize,
pub(super) history: HistoryState,
pub(super) active_layer: String,
/// Named layer-state snapshots saved by LAYERSTATE (name → per-layer state).
pub(super) layer_states: std::collections::HashMap<String, Vec<LayerSnap>>,
/// Currently active UCS. `None` means WCS (identity transform).
pub(super) active_ucs: Option<Ucs>,
/// Custom model-space background color. `None` = default dark grey.
@ -486,7 +430,6 @@ impl DocumentTab {
dyn_active: 0,
history: HistoryState::default(),
active_layer: "0".to_string(),
layer_states: std::collections::HashMap::new(),
active_ucs: None,
bg_color: None,
paper_bg_color: None,