scrolling and size of canvas

src/components/SheetCanvas.vue

@@ -31,13 +31,25 @@ const appearance = computed(() => {
 });
 const showGrid = computed(() => sheet.value.showGrid !== false);
 
-/** Unscaled plane size: enclose every object with generous margin. */
+/** Unscaled plane size: enclose every object with generous margin.
+ *  A `fixed`-viewport table only ever occupies its own `view.width`/
+ *  `view.height` on the canvas (that's the entire point of "feste Größe" --
+ *  a bounded, internally-scrolling box) regardless of how many rows/cols it
+ *  holds; only an `auto`-size table actually grows with its content, so only
+ *  that case falls back to the row/col-count estimate. */
 const plane = computed(() => {
   let w = 1600;
   let h = 1000;
   for (const o of sheet.value.objects) {
-    const ow = o.kind === 'table' ? o.cols * 104 + 60 : o.width;
-    const oh = o.kind === 'table' ? o.rows * 28 + 60 : o.height;
+    let ow: number;
+    let oh: number;
+    if (o.kind === 'table' && o.view.mode === 'fixed') {
+      ow = o.view.width;
+      oh = o.view.height;
+    } else {
+      ow = o.kind === 'table' ? o.cols * 104 + 60 : o.width;
+      oh = o.kind === 'table' ? o.rows * 28 + 60 : o.height;
+    }
     w = Math.max(w, o.x + ow + 500);
     h = Math.max(h, o.y + oh + 400);
   }