fix: pressing 's' when having one spectrum affects the other vertical…

… alignment options when we have only one spectrum and pressing 's' should not affect the vertical alignment 'bottom' or 'center'
cheminfo · Jun 10, 2022 · 6b2792c · 6b2792c
1 parent 72599ea
commit 6b2792c
Showing 1 changed file with 10 additions and 8 deletions.
diff --git a/src/component/reducer/actions/PreferencesActions.ts b/src/component/reducer/actions/PreferencesActions.ts
@@ -20,14 +20,16 @@ function changeSpectrumVerticalAlignment(
   draft: Draft<State>,
   options: AlignmentOptions,
 ) {
-  function stack(Spectra: Datum1D[] = []) {
-    draft.verticalAlign.align = 'stack';
-    const visibleSpectra = Spectra.filter((datum) => datum.display.isVisible);
-    draft.verticalAlign.verticalShift = Math.abs(
-      Math.floor(
-        (draft.height - draft.margin.bottom) / (visibleSpectra.length + 2),
-      ),
-    );
+  function stack(spectra: Datum1D[] = []) {
+    if (spectra.length > 1) {
+      draft.verticalAlign.align = 'stack';
+      const visibleSpectra = spectra.filter((datum) => datum.display.isVisible);
+      draft.verticalAlign.verticalShift = Math.abs(
+        Math.floor(
+          (draft.height - draft.margin.bottom) / (visibleSpectra.length + 2),
+        ),
+      );
+    }
   }
 
   function center() {