From 6e937ca6306991c9b77efc3fc77b7fcead90b11a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9Cchrisshank=E2=80=9D?= <chris.shank.23@gmail.com>
Date: Thu, 12 Dec 2024 19:42:02 -0800
Subject: [PATCH] spreadsheet projection thing

---
 src/folk-space-projector.ts | 34 ++++++++++++++++++++--------------
 src/folk-spreadsheet.ts     |  5 ++++-
 2 files changed, 24 insertions(+), 15 deletions(-)

diff --git a/src/folk-space-projector.ts b/src/folk-space-projector.ts
index a2837a7..7110d43 100644
--- a/src/folk-space-projector.ts
+++ b/src/folk-space-projector.ts
@@ -15,8 +15,8 @@ export class FolkSpaceProjector extends FolkBaseSet {
     css`
       folk-spreadsheet {
         position: absolute;
-        bottom: 5px;
-        right: 5px;
+        bottom: 15px;
+        right: 15px;
         pointer-events: auto;
         box-shadow: 0px 3px 5px 0px rgba(173, 168, 168, 0.6);
       }
@@ -50,10 +50,10 @@ export class FolkSpaceProjector extends FolkBaseSet {
   #lock = false;
 
   #onPropagate = (event: Event) => {
-    if (this.#lock) return;
-
     const cell = event.target as FolkSpreadSheetCell;
 
+    if (this.#lock && cell.dependencies.length === 0) return;
+
     const shape = this.sourceElements
       .values()
       .drop(cell.row - 1)
@@ -147,17 +147,17 @@ export class FolkSpaceProjector extends FolkBaseSet {
 
       if (rect instanceof DOMRectTransform) {
         const { x, y } = rect.toParentSpace(rect.topLeft);
-        this.#spreadsheet.getCell('A', row)!.expression = Math.round(x);
-        this.#spreadsheet.getCell('B', row)!.expression = Math.round(y);
-        this.#spreadsheet.getCell('C', row)!.expression = Math.round(rect.width);
-        this.#spreadsheet.getCell('D', row)!.expression = Math.round(rect.height);
-        this.#spreadsheet.getCell('E', row)!.expression = Math.round((rect.rotation * 180) / Math.PI);
+        updateCell(this.#spreadsheet.getCell('A', row)!, x);
+        updateCell(this.#spreadsheet.getCell('B', row)!, y);
+        updateCell(this.#spreadsheet.getCell('C', row)!, rect.width);
+        updateCell(this.#spreadsheet.getCell('D', row)!, rect.height);
+        updateCell(this.#spreadsheet.getCell('E', row)!, (rect.rotation * 180) / Math.PI);
       } else {
-        this.#spreadsheet.getCell('A', row)!.expression = Math.round(rect.x);
-        this.#spreadsheet.getCell('B', row)!.expression = Math.round(rect.y);
-        this.#spreadsheet.getCell('C', row)!.expression = Math.round(rect.width);
-        this.#spreadsheet.getCell('D', row)!.expression = Math.round(rect.height);
-        this.#spreadsheet.getCell('E', row)!.expression = 0;
+        updateCell(this.#spreadsheet.getCell('A', row)!, rect.x);
+        updateCell(this.#spreadsheet.getCell('B', row)!, rect.y);
+        updateCell(this.#spreadsheet.getCell('C', row)!, rect.width);
+        updateCell(this.#spreadsheet.getCell('D', row)!, rect.height);
+        updateCell(this.#spreadsheet.getCell('E', row)!, 0);
       }
       row += 1;
     }
@@ -167,3 +167,9 @@ export class FolkSpaceProjector extends FolkBaseSet {
     });
   }
 }
+
+function updateCell(cell: FolkSpreadSheetCell, expression: number) {
+  if (cell.dependencies.length) return;
+
+  cell.expression = Math.round(expression);
+}
diff --git a/src/folk-spreadsheet.ts b/src/folk-spreadsheet.ts
index 15d1fbe..7b951d6 100644
--- a/src/folk-spreadsheet.ts
+++ b/src/folk-spreadsheet.ts
@@ -450,11 +450,14 @@ export class FolkSpreadSheetCell extends HTMLElement {
 
   #function = new Function();
 
-  get expression() {
+  get expression(): string {
     return this.#expression;
   }
   set expression(expression: any) {
     expression = String(expression).trim();
+
+    if (expression === this.#expression) return;
+
     this.#expression = expression;
 
     this.#dependencies.forEach((dep) => dep.removeEventListener('propagate', this));