Don't try to resize desktop or fullscreen windows

Summary: those windows should always take all the space no matter what

Test Plan: text areas on desktop or fullscreen windows don't cause resizes anymore

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D19922

abstract_client.cpp

@@ -1902,6 +1902,11 @@ void AbstractClient::setVirtualKeyboardGeometry(const QRect &geo)
 
     m_virtualKeyboardGeometry = geo;
 
+    // Don't resize Desktop and fullscreen windows
+    if (isFullScreen() || isDesktop()) {
+        return;
+    }
+
     if (!geo.intersects(m_keyboardGeometryRestore)) {
         return;
     }