From 5ef71c92ce6be7fed8a5ffc7bbe50bde7fd9a64a Mon Sep 17 00:00:00 2001
From: Peter Fajdiga <peter.fajdiga@gmail.com>
Date: Fri, 22 Sep 2023 11:15:35 +0200
Subject: [PATCH] Column: prevent stacking columns with unshadeable windows

---
 src/extern/kwin.d.ts |  1 +
 src/layout/Column.ts | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/extern/kwin.d.ts b/src/extern/kwin.d.ts
index 26f096c..76df038 100644
--- a/src/extern/kwin.d.ts
+++ b/src/extern/kwin.d.ts
@@ -34,6 +34,7 @@ type Tile = any;
 
 interface KwinClient {
     // Read-only Properties
+    readonly shadeable: boolean;
     readonly caption: string;
     readonly minSize: QSize;
     readonly transient: boolean;
diff --git a/src/layout/Column.ts b/src/layout/Column.ts
index 379cf1b..c0dca74 100644
--- a/src/layout/Column.ts
+++ b/src/layout/Column.ts
@@ -181,7 +181,7 @@ class Column {
     }
 
     public arrange(x: number) {
-        if (this.stacked && this.windows.length() >= 2) {
+        if (this.stacked && this.windows.length() >= 2 && this.canStack()) {
             this.arrangeStacked(x);
             return;
         }
@@ -228,6 +228,15 @@ class Column {
         this.grid.desktop.onLayoutChanged();
     }
 
+    private canStack() {
+        for (const window of this.windows.iterator()) {
+            if (!window.client.kwinClient.shadeable) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     public isVisible(scrollPos: Desktop.ScrollPos, fullyVisible: boolean) {
         if (fullyVisible) {
             return this.getLeft() >= scrollPos.getLeft() &&