diff --git a/Libraries/LibGfx/CMakeLists.txt b/Libraries/LibGfx/CMakeLists.txt
index 44faca4696..e0f13a0e7a 100644
--- a/Libraries/LibGfx/CMakeLists.txt
+++ b/Libraries/LibGfx/CMakeLists.txt
@@ -25,6 +25,7 @@ set(SOURCES
     StylePainter.cpp
     SystemTheme.cpp
     Triangle.cpp
+    WindowTheme.cpp
 )
 
 serenity_lib(LibGfx gfx)
diff --git a/Libraries/LibGfx/WindowTheme.cpp b/Libraries/LibGfx/WindowTheme.cpp
new file mode 100644
index 0000000000..350333959b
--- /dev/null
+++ b/Libraries/LibGfx/WindowTheme.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibGfx/ClassicWindowTheme.h>
+#include <LibGfx/WindowTheme.h>
+
+namespace Gfx {
+
+WindowTheme& WindowTheme::current()
+{
+    static ClassicWindowTheme theme;
+    return theme;
+}
+
+WindowTheme::~WindowTheme()
+{
+}
+
+}
diff --git a/Libraries/LibGfx/WindowTheme.h b/Libraries/LibGfx/WindowTheme.h
new file mode 100644
index 0000000000..62e774e35d
--- /dev/null
+++ b/Libraries/LibGfx/WindowTheme.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/Forward.h>
+#include <LibGfx/Forward.h>
+
+namespace Gfx {
+
+class WindowTheme {
+public:
+    enum class WindowType {
+        Normal,
+        Notification,
+    };
+
+    enum class WindowState {
+        Active,
+        Inactive,
+        Highlighted,
+        Moving,
+    };
+
+    virtual ~WindowTheme();
+
+    static WindowTheme& current();
+
+    virtual void paint_normal_frame(Painter&, WindowState, const IntRect& outer_rect, const IntRect& window_rect, const StringView& title, const Bitmap& icon, const Palette&, const IntRect& leftmost_button_rect) const = 0;
+    virtual void paint_notification_frame(Painter&, const IntRect&, const Palette&) const = 0;
+
+    virtual IntRect title_bar_rect(WindowType, const IntRect& window_rect, const Palette&) const = 0;
+    virtual IntRect title_bar_icon_rect(WindowType, const IntRect& window_rect, const Palette&) const = 0;
+    virtual IntRect title_bar_text_rect(WindowType, const IntRect& window_rect, const Palette&) const = 0;
+
+protected:
+    WindowTheme() { }
+};
+
+}