TextureTools: add a forward declaration header.

doc/compilation-speedup.dox

@@ -65,6 +65,7 @@ are available, with each namespace having its own:
 -   @ref Magnum/ShaderTools/ShaderTools.h
 -   @ref Magnum/Shaders/Shaders.h
 -   @ref Magnum/Text/Text.h
+-   @ref Magnum/TextureTools/TextureTools.h
 -   @ref Magnum/Trade/Trade.h
 -   @ref Magnum/Ui/Ui.h
 -   @ref Magnum/Vk/Vk.h

src/Magnum/TextureTools/CMakeLists.txt

@@ -44,6 +44,7 @@ set(MagnumTextureTools_GracefulAssert_SRCS
 
 set(MagnumTextureTools_HEADERS
     Atlas.h
+    TextureTools.h
 
     visibility.h)
 

src/Magnum/TextureTools/TextureTools.h

@@ -0,0 +1,44 @@
+#ifndef Magnum_TextureTools_TextureTools_h
+#define Magnum_TextureTools_TextureTools_h
+/*
+    This file is part of Magnum.
+
+    Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
+                2020, 2021, 2022, 2023 Vladimír Vondruš <mosra@centrum.cz>
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+*/
+
+/** @file
+ * @brief Forward declarations for the @ref Magnum::TextureTools namespace
+ */
+
+#include <Corrade/Containers/Containers.h>
+
+#include "Magnum/Magnum.h"
+
+namespace Magnum { namespace TextureTools {
+
+#ifndef DOXYGEN_GENERATING_OUTPUT
+class AtlasLandfill;
+#endif
+
+}}
+
+#endif