@tldraw/editor/dist-esm/lib/editor/managers/SnapManager/SnapManager.mjs

tldraw infinite canvas SDK (editor).

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __knownSymbol = (name, symbol) => (symbol = Symbol[name]) ? symbol : Symbol.for("Symbol." + name);
var __typeError = (msg) => {
  throw TypeError(msg);
};
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
var __decoratorStart = (base) => [, , , __create(base?.[__knownSymbol("metadata")] ?? null)];
var __decoratorStrings = ["class", "method", "getter", "setter", "accessor", "field", "value", "get", "set"];
var __expectFn = (fn) => fn !== void 0 && typeof fn !== "function" ? __typeError("Function expected") : fn;
var __decoratorContext = (kind, name, done, metadata, fns) => ({ kind: __decoratorStrings[kind], name, metadata, addInitializer: (fn) => done._ ? __typeError("Already initialized") : fns.push(__expectFn(fn || null)) });
var __decoratorMetadata = (array, target) => __defNormalProp(target, __knownSymbol("metadata"), array[3]);
var __runInitializers = (array, flags, self, value) => {
  for (var i = 0, fns = array[flags >> 1], n = fns && fns.length; i < n; i++) flags & 1 ? fns[i].call(self) : value = fns[i].call(self, value);
  return value;
};
var __decorateElement = (array, flags, name, decorators, target, extra) => {
  var fn, it, done, ctx, access, k = flags & 7, s = !!(flags & 8), p = !!(flags & 16);
  var j = k > 3 ? array.length + 1 : k ? s ? 1 : 2 : 0, key = __decoratorStrings[k + 5];
  var initializers = k > 3 && (array[j - 1] = []), extraInitializers = array[j] || (array[j] = []);
  var desc = k && (!p && !s && (target = target.prototype), k < 5 && (k > 3 || !p) && __getOwnPropDesc(k < 4 ? target : { get [name]() {
    return __privateGet(this, extra);
  }, set [name](x) {
    return __privateSet(this, extra, x);
  } }, name));
  k ? p && k < 4 && __name(extra, (k > 2 ? "set " : k > 1 ? "get " : "") + name) : __name(target, name);
  for (var i = decorators.length - 1; i >= 0; i--) {
    ctx = __decoratorContext(k, name, done = {}, array[3], extraInitializers);
    if (k) {
      ctx.static = s, ctx.private = p, access = ctx.access = { has: p ? (x) => __privateIn(target, x) : (x) => name in x };
      if (k ^ 3) access.get = p ? (x) => (k ^ 1 ? __privateGet : __privateMethod)(x, target, k ^ 4 ? extra : desc.get) : (x) => x[name];
      if (k > 2) access.set = p ? (x, y) => __privateSet(x, target, y, k ^ 4 ? extra : desc.set) : (x, y) => x[name] = y;
    }
    it = (0, decorators[i])(k ? k < 4 ? p ? extra : desc[key] : k > 4 ? void 0 : { get: desc.get, set: desc.set } : target, ctx), done._ = 1;
    if (k ^ 4 || it === void 0) __expectFn(it) && (k > 4 ? initializers.unshift(it) : k ? p ? extra = it : desc[key] = it : target = it);
    else if (typeof it !== "object" || it === null) __typeError("Object expected");
    else __expectFn(fn = it.get) && (desc.get = fn), __expectFn(fn = it.set) && (desc.set = fn), __expectFn(fn = it.init) && initializers.unshift(fn);
  }
  return k || __decoratorMetadata(array, target), desc && __defProp(target, name, desc), p ? k ^ 4 ? extra : desc : target;
};
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
var __accessCheck = (obj, member, msg) => member.has(obj) || __typeError("Cannot " + msg);
var __privateIn = (member, obj) => Object(obj) !== obj ? __typeError('Cannot use the "in" operator on this value') : member.has(obj);
var __privateGet = (obj, member, getter) => (__accessCheck(obj, member, "read from private field"), getter ? getter.call(obj) : member.get(obj));
var __privateSet = (obj, member, value, setter) => (__accessCheck(obj, member, "write to private field"), setter ? setter.call(obj, value) : member.set(obj, value), value);
var __privateMethod = (obj, member, method) => (__accessCheck(obj, member, "access private method"), method);
var _getCurrentCommonAncestor_dec, _getSnappableShapes_dec, _getSnapThreshold_dec, _init;
import { EMPTY_ARRAY, atom, computed } from "@tldraw/state";
import { isShapeId } from "@tldraw/tlschema";
import { BoundsSnaps } from "./BoundsSnaps.mjs";
import { HandleSnaps } from "./HandleSnaps.mjs";
_getSnapThreshold_dec = [computed], _getSnappableShapes_dec = [computed], _getCurrentCommonAncestor_dec = [computed];
class SnapManager {
  constructor(editor) {
    this.editor = editor;
    __runInitializers(_init, 5, this);
    __publicField(this, "shapeBounds");
    __publicField(this, "handles");
    __publicField(this, "_snapIndicators", atom("snapLines", void 0));
    this.shapeBounds = new BoundsSnaps(this);
    this.handles = new HandleSnaps(this);
  }
  getIndicators() {
    return this._snapIndicators.get() ?? EMPTY_ARRAY;
  }
  clearIndicators() {
    if (this.getIndicators().length) {
      this._snapIndicators.set(void 0);
    }
  }
  setIndicators(indicators) {
    this._snapIndicators.set(indicators);
  }
  getSnapThreshold() {
    return 8 / this.editor.getZoomLevel();
  }
  getSnappableShapes() {
    const { editor } = this;
    const renderingBounds = editor.getViewportPageBounds();
    const selectedShapeIds = editor.getSelectedShapeIds();
    const snappableShapes = /* @__PURE__ */ new Set();
    const collectSnappableShapesFromParent = (parentId) => {
      if (isShapeId(parentId)) {
        const parent = editor.getShape(parentId);
        if (parent && editor.isShapeOfType(parent, "frame")) {
          snappableShapes.add(parentId);
        }
      }
      const sortedChildIds = editor.getSortedChildIdsForParent(parentId);
      for (const childId of sortedChildIds) {
        if (selectedShapeIds.includes(childId)) continue;
        const childShape = editor.getShape(childId);
        if (!childShape) continue;
        const util = editor.getShapeUtil(childShape);
        if (!util.canSnap(childShape)) continue;
        const pageBounds = editor.getShapePageBounds(childId);
        if (!(pageBounds && renderingBounds.includes(pageBounds))) continue;
        if (editor.isShapeOfType(childShape, "group")) {
          collectSnappableShapesFromParent(childId);
          continue;
        }
        snappableShapes.add(childId);
      }
    };
    collectSnappableShapesFromParent(this.getCurrentCommonAncestor() ?? editor.getCurrentPageId());
    return snappableShapes;
  }
  getCurrentCommonAncestor() {
    return this.editor.findCommonAncestor(this.editor.getSelectedShapes());
  }
}
_init = __decoratorStart(null);
__decorateElement(_init, 1, "getSnapThreshold", _getSnapThreshold_dec, SnapManager);
__decorateElement(_init, 1, "getSnappableShapes", _getSnappableShapes_dec, SnapManager);
__decorateElement(_init, 1, "getCurrentCommonAncestor", _getCurrentCommonAncestor_dec, SnapManager);
__decoratorMetadata(_init, SnapManager);
export {
  SnapManager
};
//# sourceMappingURL=SnapManager.mjs.map