From ee181ef7a59d42d6b7a6527f2a48e09f85546e73 Mon Sep 17 00:00:00 2001
From: Aleix Pol <aleixpol@kde.org>
Date: Fri, 9 Apr 2021 16:44:44 +0200
Subject: [PATCH] layershell: Support virtual keyboards

Resize layershell-based clients to adapt to the keyboard when it
appears.
---
 src/layershellv1client.cpp      | 10 ++++++++++
 src/layershellv1client.h        |  1 +
 src/layershellv1integration.cpp |  5 +++++
 3 files changed, 16 insertions(+)

diff --git a/src/layershellv1client.cpp b/src/layershellv1client.cpp
index a0ceba9753..a774d23b55 100644
--- a/src/layershellv1client.cpp
+++ b/src/layershellv1client.cpp
@@ -272,4 +272,14 @@ void LayerShellV1Client::handleOutputDestroyed()
     destroyClient();
 }
 
+void LayerShellV1Client::setVirtualKeyboardGeometry(const QRect &geo)
+{
+    if (m_virtualKeyboardGeometry == geo) {
+        return;
+    }
+
+    m_virtualKeyboardGeometry = geo;
+    scheduleRearrange();
+}
+
 } // namespace KWin
diff --git a/src/layershellv1client.h b/src/layershellv1client.h
index dfb6ce046c..119ccb5fae 100644
--- a/src/layershellv1client.h
+++ b/src/layershellv1client.h
@@ -43,6 +43,7 @@ public:
     bool hasStrut() const override;
     void destroyClient() override;
     void closeWindow() override;
+    void setVirtualKeyboardGeometry(const QRect &geo) override;
 
 protected:
     Layer belongsToLayer() const override;
diff --git a/src/layershellv1integration.cpp b/src/layershellv1integration.cpp
index a55f961e07..187d431067 100644
--- a/src/layershellv1integration.cpp
+++ b/src/layershellv1integration.cpp
@@ -148,6 +148,11 @@ static void rearrangeLayer(const QList<LayerShellV1Client *> &clients, QRect *wo
             geometry.translate(0, -shellSurface->bottomMargin());
         }
 
+        // Move the window's bottom if its virtual keyboard is overlapping it
+        if (shellSurface->exclusiveZone() >= 0 && !client->virtualKeyboardGeometry().isEmpty() && geometry.bottom() > client->virtualKeyboardGeometry().top()) {
+            geometry.setBottom(client->virtualKeyboardGeometry().top());
+        }
+
         if (geometry.isValid()) {
             client->setFrameGeometry(geometry);
         } else {