Squash Odysseus development history

2026-10-12 18:02:20 +02:00 · 2026-09-11 06:04:19 +00:00
parent e5c99a5eee
commit 6ee6502010
2050 changed files with 538359 additions and 57745 deletions
@@ -0,0 +1,96 @@
+/** Shared multi-layer selection semantics for panel and canvas tools. */
+import { isLayerEffectivelyLocked } from './layer-groups.js';
+
+function existingIds(editorState) {
+  return new Set((editorState.layers || []).map(layer => layer.id));
+}
+
+export function normalizeLayerSelection(editorState) {
+  const valid = existingIds(editorState);
+  const selected = [];
+  for (const id of editorState.selectedLayerIds || []) {
+    if (valid.has(id) && !selected.includes(id)) selected.push(id);
+  }
+  if (valid.has(editorState.activeLayerId) && !selected.includes(editorState.activeLayerId)) {
+    selected.length = 0;
+    selected.push(editorState.activeLayerId);
+    editorState.activeGroupId = null;
+  }
+  if (!selected.length && editorState.layers?.length) {
+    const fallback = editorState.layers[editorState.layers.length - 1];
+    editorState.activeLayerId = fallback.id;
+    selected.push(fallback.id);
+    editorState.activeGroupId = null;
+  }
+  editorState.selectedLayerIds = selected;
+  if (!valid.has(editorState.selectionAnchorId)) {
+    editorState.selectionAnchorId = editorState.activeLayerId || null;
+  }
+  return selected;
+}
+
+export function selectedLayers(editorState, { unlockedOnly = false } = {}) {
+  const ids = new Set(normalizeLayerSelection(editorState));
+  return (editorState.layers || []).filter(layer =>
+    ids.has(layer.id) && (!unlockedOnly || !isLayerEffectivelyLocked(editorState, layer))
+  );
+}
+
+export function selectOnlyLayer(editorState, layerId) {
+  if (!(editorState.layers || []).some(layer => layer.id === layerId)) return [];
+  editorState.activeLayerId = layerId;
+  editorState.selectionAnchorId = layerId;
+  editorState.selectedLayerIds = [layerId];
+  editorState.activeGroupId = null;
+  return editorState.selectedLayerIds;
+}
+
+export function toggleLayerSelection(editorState, layerId) {
+  const valid = (editorState.layers || []).some(layer => layer.id === layerId);
+  if (!valid) return normalizeLayerSelection(editorState);
+  const selected = normalizeLayerSelection(editorState);
+  const index = selected.indexOf(layerId);
+  if (index >= 0 && selected.length > 1) {
+    selected.splice(index, 1);
+    if (editorState.activeLayerId === layerId) {
+      editorState.activeLayerId = selected[selected.length - 1];
+    }
+  } else if (index < 0) {
+    selected.push(layerId);
+    editorState.activeLayerId = layerId;
+  }
+  editorState.selectionAnchorId = layerId;
+  editorState.selectedLayerIds = selected;
+  editorState.activeGroupId = null;
+  return selected;
+}
+
+export function selectLayerRange(editorState, layerId) {
+  const layers = editorState.layers || [];
+  const target = layers.findIndex(layer => layer.id === layerId);
+  if (target < 0) return normalizeLayerSelection(editorState);
+  const anchorId = editorState.selectionAnchorId || editorState.activeLayerId || layerId;
+  const anchor = layers.findIndex(layer => layer.id === anchorId);
+  if (anchor < 0) return selectOnlyLayer(editorState, layerId);
+  const start = Math.min(anchor, target);
+  const end = Math.max(anchor, target);
+  editorState.selectedLayerIds = layers.slice(start, end + 1).map(layer => layer.id);
+  editorState.activeLayerId = layerId;
+  editorState.activeGroupId = null;
+  return editorState.selectedLayerIds;
+}
+
+export function selectAllLayers(editorState) {
+  editorState.selectedLayerIds = (editorState.layers || []).map(layer => layer.id);
+  if (editorState.selectedLayerIds.length && !editorState.selectedLayerIds.includes(editorState.activeLayerId)) {
+    editorState.activeLayerId = editorState.selectedLayerIds[editorState.selectedLayerIds.length - 1];
+  }
+  editorState.selectionAnchorId = editorState.activeLayerId || null;
+  editorState.activeGroupId = null;
+  return editorState.selectedLayerIds;
+}
+
+export function selectionLabel(editorState, singular = 'layer') {
+  const count = normalizeLayerSelection(editorState).length;
+  return count === 1 ? singular : `${count} layers`;
+}