diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 704324af91..a2b4953308 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -119,7 +119,7 @@ target_sources(kwin PRIVATE
     scripting/scripting.cpp
     scripting/scripting_logging.cpp
     scripting/scriptingutils.cpp
-    scripting/thumbnailitem.cpp
+    scripting/windowthumbnailitem.cpp
     scripting/workspace_wrapper.cpp
     session.cpp
     session_consolekit.cpp
diff --git a/src/scripting/desktopbackgrounditem.h b/src/scripting/desktopbackgrounditem.h
index a6d8e624ca..1cd6b568ca 100644
--- a/src/scripting/desktopbackgrounditem.h
+++ b/src/scripting/desktopbackgrounditem.h
@@ -6,7 +6,7 @@
 
 #pragma once
 
-#include "thumbnailitem.h"
+#include "windowthumbnailitem.h"
 
 namespace KWin
 {
diff --git a/src/scripting/scripting.cpp b/src/scripting/scripting.cpp
index 43ea3d6ac9..a990c9aac4 100644
--- a/src/scripting/scripting.cpp
+++ b/src/scripting/scripting.cpp
@@ -16,7 +16,7 @@
 #include "screenedgeitem.h"
 #include "scripting_logging.h"
 #include "scriptingutils.h"
-#include "thumbnailitem.h"
+#include "windowthumbnailitem.h"
 #include "workspace_wrapper.h"
 
 #include "v2/clientmodel.h"
diff --git a/src/scripting/thumbnailitem.cpp b/src/scripting/windowthumbnailitem.cpp
similarity index 91%
rename from src/scripting/thumbnailitem.cpp
rename to src/scripting/windowthumbnailitem.cpp
index 61b6df627d..52a7c17216 100644
--- a/src/scripting/thumbnailitem.cpp
+++ b/src/scripting/windowthumbnailitem.cpp
@@ -6,7 +6,7 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
-#include "thumbnailitem.h"
+#include "windowthumbnailitem.h"
 #include "composite.h"
 #include "effects.h"
 #include "renderbackend.h"
@@ -100,21 +100,21 @@ private:
     QScopedPointer<ThumbnailTextureProvider> m_provider;
 };
 
-ThumbnailItemBase::ThumbnailItemBase(QQuickItem *parent)
+WindowThumbnailItem::WindowThumbnailItem(QQuickItem *parent)
     : QQuickItem(parent)
 {
     setFlag(ItemHasContents);
     updateFrameRenderingConnection();
 
     connect(Compositor::self(), &Compositor::aboutToToggleCompositing,
-            this, &ThumbnailItemBase::destroyOffscreenTexture);
+            this, &WindowThumbnailItem::destroyOffscreenTexture);
     connect(Compositor::self(), &Compositor::compositingToggled,
-            this, &ThumbnailItemBase::updateFrameRenderingConnection);
+            this, &WindowThumbnailItem::updateFrameRenderingConnection);
     connect(this, &QQuickItem::windowChanged,
-            this, &ThumbnailItemBase::updateFrameRenderingConnection);
+            this, &WindowThumbnailItem::updateFrameRenderingConnection);
 }
 
-ThumbnailItemBase::~ThumbnailItemBase()
+WindowThumbnailItem::~WindowThumbnailItem()
 {
     destroyOffscreenTexture();
 
@@ -128,7 +128,7 @@ ThumbnailItemBase::~ThumbnailItemBase()
     }
 }
 
-void ThumbnailItemBase::releaseResources()
+void WindowThumbnailItem::releaseResources()
 {
     if (m_provider) {
         window()->scheduleRenderJob(new ThumbnailTextureProviderCleanupJob(m_provider),
@@ -137,12 +137,12 @@ void ThumbnailItemBase::releaseResources()
     }
 }
 
-bool ThumbnailItemBase::isTextureProvider() const
+bool WindowThumbnailItem::isTextureProvider() const
 {
     return true;
 }
 
-QSGTextureProvider *ThumbnailItemBase::textureProvider() const
+QSGTextureProvider *WindowThumbnailItem::textureProvider() const
 {
     if (QQuickItem::isTextureProvider()) {
         return QQuickItem::textureProvider();
@@ -153,7 +153,7 @@ QSGTextureProvider *ThumbnailItemBase::textureProvider() const
     return m_provider;
 }
 
-void ThumbnailItemBase::updateFrameRenderingConnection()
+void WindowThumbnailItem::updateFrameRenderingConnection()
 {
     disconnect(m_frameRenderingConnection);
 
@@ -165,16 +165,16 @@ void ThumbnailItemBase::updateFrameRenderingConnection()
     }
 
     if (Compositor::self()->backend()->compositingType() == OpenGLCompositing) {
-        m_frameRenderingConnection = connect(Compositor::self()->scene(), &Scene::frameRendered, this, &ThumbnailItemBase::updateOffscreenTexture);
+        m_frameRenderingConnection = connect(Compositor::self()->scene(), &Scene::frameRendered, this, &WindowThumbnailItem::updateOffscreenTexture);
     }
 }
 
-QSize ThumbnailItemBase::sourceSize() const
+QSize WindowThumbnailItem::sourceSize() const
 {
     return m_sourceSize;
 }
 
-void ThumbnailItemBase::setSourceSize(const QSize &sourceSize)
+void WindowThumbnailItem::setSourceSize(const QSize &sourceSize)
 {
     if (m_sourceSize != sourceSize) {
         m_sourceSize = sourceSize;
@@ -183,7 +183,7 @@ void ThumbnailItemBase::setSourceSize(const QSize &sourceSize)
     }
 }
 
-void ThumbnailItemBase::destroyOffscreenTexture()
+void WindowThumbnailItem::destroyOffscreenTexture()
 {
     if (!Compositor::compositing()) {
         return;
@@ -206,7 +206,7 @@ void ThumbnailItemBase::destroyOffscreenTexture()
     }
 }
 
-QSGNode *ThumbnailItemBase::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
+QSGNode *WindowThumbnailItem::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
 {
     if (Compositor::compositing() && !m_offscreenTexture) {
         return oldNode;
@@ -249,29 +249,39 @@ QSGNode *ThumbnailItemBase::updatePaintNode(QSGNode *oldNode, QQuickItem::Update
     return node;
 }
 
-void ThumbnailItemBase::setSaturation(qreal saturation)
+qreal WindowThumbnailItem::saturation() const
+{
+    return 1;
+}
+
+void WindowThumbnailItem::setSaturation(qreal saturation)
 {
     Q_UNUSED(saturation)
     qCWarning(KWIN_SCRIPTING) << "ThumbnailItem.saturation is removed. Use a shader effect to change saturation";
 }
 
-void ThumbnailItemBase::setBrightness(qreal brightness)
+qreal WindowThumbnailItem::brightness() const
+{
+    return 1;
+}
+
+void WindowThumbnailItem::setBrightness(qreal brightness)
 {
     Q_UNUSED(brightness)
     qCWarning(KWIN_SCRIPTING) << "ThumbnailItem.brightness is removed. Use a shader effect to change brightness";
 }
 
-void ThumbnailItemBase::setClipTo(QQuickItem *clip)
+QQuickItem *WindowThumbnailItem::clipTo() const
+{
+    return nullptr;
+}
+
+void WindowThumbnailItem::setClipTo(QQuickItem *clip)
 {
     Q_UNUSED(clip)
     qCWarning(KWIN_SCRIPTING) << "ThumbnailItem.clipTo is removed and it has no replacements";
 }
 
-WindowThumbnailItem::WindowThumbnailItem(QQuickItem *parent)
-    : ThumbnailItemBase(parent)
-{
-}
-
 QUuid WindowThumbnailItem::wId() const
 {
     return m_wId;
diff --git a/src/scripting/thumbnailitem.h b/src/scripting/windowthumbnailitem.h
similarity index 76%
rename from src/scripting/thumbnailitem.h
rename to src/scripting/windowthumbnailitem.h
index 06c033b707..89bc770fa1 100644
--- a/src/scripting/thumbnailitem.h
+++ b/src/scripting/windowthumbnailitem.h
@@ -19,9 +19,12 @@ class GLFramebuffer;
 class GLTexture;
 class ThumbnailTextureProvider;
 
-class ThumbnailItemBase : public QQuickItem
+class WindowThumbnailItem : public QQuickItem
 {
     Q_OBJECT
+    Q_PROPERTY(QUuid wId READ wId WRITE setWId NOTIFY wIdChanged)
+    Q_PROPERTY(KWin::Window *client READ client WRITE setClient NOTIFY clientChanged)
+
     Q_PROPERTY(QSize sourceSize READ sourceSize WRITE setSourceSize NOTIFY sourceSizeChanged)
     /**
      * TODO Plasma 6: Remove.
@@ -40,25 +43,22 @@ class ThumbnailItemBase : public QQuickItem
     Q_PROPERTY(QQuickItem *clipTo READ clipTo WRITE setClipTo NOTIFY clipToChanged)
 
 public:
-    explicit ThumbnailItemBase(QQuickItem *parent = nullptr);
-    ~ThumbnailItemBase() override;
+    explicit WindowThumbnailItem(QQuickItem *parent = nullptr);
+    ~WindowThumbnailItem() override;
 
-    qreal brightness() const
-    {
-        return 1;
-    }
+    QUuid wId() const;
+    void setWId(const QUuid &wId);
+
+    Window *client() const;
+    void setClient(Window *client);
+
+    qreal brightness() const;
     void setBrightness(qreal brightness);
 
-    qreal saturation() const
-    {
-        return 1;
-    }
+    qreal saturation() const;
     void setSaturation(qreal saturation);
 
-    QQuickItem *clipTo() const
-    {
-        return nullptr;
-    }
+    QQuickItem *clipTo() const;
     void setClipTo(QQuickItem *clip);
 
     QSize sourceSize() const;
@@ -68,20 +68,30 @@ public:
     bool isTextureProvider() const override;
     QSGNode *updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *) override;
 
+protected:
+    void releaseResources() override;
+
 Q_SIGNALS:
+    void wIdChanged();
+    void clientChanged();
     void brightnessChanged();
     void saturationChanged();
     void clipToChanged();
     void sourceSizeChanged();
 
-protected:
-    void releaseResources() override;
-
-    virtual QImage fallbackImage() const = 0;
-    virtual QRectF paintedRect() const = 0;
-    virtual void invalidateOffscreenTexture() = 0;
-    virtual void updateOffscreenTexture() = 0;
+private:
+    QImage fallbackImage() const;
+    QRectF paintedRect() const;
+    void invalidateOffscreenTexture();
+    void updateOffscreenTexture();
     void destroyOffscreenTexture();
+    void updateImplicitSize();
+    void updateFrameRenderingConnection();
+
+    QSize m_sourceSize;
+    QUuid m_wId;
+    QPointer<Window> m_client;
+    bool m_dirty = false;
 
     mutable ThumbnailTextureProvider *m_provider = nullptr;
     QSharedPointer<GLTexture> m_offscreenTexture;
@@ -89,43 +99,7 @@ protected:
     GLsync m_acquireFence = 0;
     qreal m_devicePixelRatio = 1;
 
-private:
-    void updateFrameRenderingConnection();
     QMetaObject::Connection m_frameRenderingConnection;
-
-    QSize m_sourceSize;
-};
-
-class WindowThumbnailItem : public ThumbnailItemBase
-{
-    Q_OBJECT
-    Q_PROPERTY(QUuid wId READ wId WRITE setWId NOTIFY wIdChanged)
-    Q_PROPERTY(KWin::Window *client READ client WRITE setClient NOTIFY clientChanged)
-
-public:
-    explicit WindowThumbnailItem(QQuickItem *parent = nullptr);
-
-    QUuid wId() const;
-    void setWId(const QUuid &wId);
-
-    Window *client() const;
-    void setClient(Window *client);
-
-Q_SIGNALS:
-    void wIdChanged();
-    void clientChanged();
-
-protected:
-    QImage fallbackImage() const override;
-    QRectF paintedRect() const override;
-    void invalidateOffscreenTexture() override;
-    void updateOffscreenTexture() override;
-    void updateImplicitSize();
-
-private:
-    QUuid m_wId;
-    QPointer<Window> m_client;
-    bool m_dirty = false;
 };
 
 } // namespace KWin