move sdlpixel file into utils directory.

7 files changed, 239 insertions, 313 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 711d9e47b..cdc61aa91 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -782,7 +782,7 @@ SET(SRCS
     gui/base/rectangle.hpp
     events/selectionevent.h
     listeners/selectionlistener.h
-    gui/base/sdl/sdlpixel.hpp
+    utils/sdlpixel.h
     gui/base/widget.hpp
     listeners/widgetlistener.h
     gui/base/widgets/button.hpp
diff --git a/src/Makefile.am b/src/Makefile.am
index f20376feb..246da6073 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -168,7 +168,7 @@ manaplus_SOURCES += events/actionevent.h \
 	      gui/base/rectangle.hpp \
 	      events/selectionevent.h \
 	      listeners/selectionlistener.h \
-	      gui/base/sdl/sdlpixel.hpp \
+	      utils/sdlpixel.h \
 	      gui/base/widget.hpp \
 	      listeners/widgetlistener.h \
 	      gui/base/widgets/button.hpp \
diff --git a/src/gui/base/sdl/sdlpixel.hpp b/src/gui/base/sdl/sdlpixel.hpp
deleted file mode 100644
index 06a22f65f..000000000
--- a/src/gui/base/sdl/sdlpixel.hpp
+++ /dev/null
@@ -1,306 +0,0 @@
-/*
- *  The ManaPlus Client
- *  Copyright (C) 2011-2014  The ManaPlus Developers
- *
- *  This file is part of The ManaPlus Client.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*      _______   __   __  __   ______   __   __   _______   __   __
- *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
- *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
- *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
- *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
- * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
- * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
- *
- * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
- *
- *
- * Per Larsson a.k.a finalman
- * Olof Naessén a.k.a jansem/yakslem
- *
- * Visit: http://guichan.sourceforge.net
- *
- * License: (BSD)
- * 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.
- * 3. Neither the name of Guichan nor the names of its contributors may
- *    be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * 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
- * OWNER 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.
- */
-
-#ifndef GCN_SDLPIXEL_HPP
-#define GCN_SDLPIXEL_HPP
-
-#include "SDL.h"
-#include "gui/base/color.hpp"
-
-namespace gcn
-{
-
-    /**
-     * Checks a pixels color of an SDL_Surface.
-     *
-     * @param surface an SDL_Surface where to check for a pixel color.
-     * @param x the x coordinate on the surface.
-     * @param y the y coordinate on the surface.
-     * @return a color of a pixel.
-     */
-    inline const Color SDLgetPixel(SDL_Surface* surface, int x, int y)
-    {
-        if (!surface)
-            return Color(0, 0, 0, 0);
-
-        int bpp = surface->format->BytesPerPixel;
-
-        SDL_LockSurface(surface);
-
-        Uint8 *p = static_cast<uint8_t*>(surface->pixels)
-            + y * surface->pitch + x * bpp;
-
-        unsigned int color = 0;
-
-        switch (bpp)
-        {
-            case 1:
-                color = *p;
-                break;
-
-            case 2:
-                color = *reinterpret_cast<Uint16*>(p);
-                break;
-
-            case 3:
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-                    color = p[0] << 16 | p[1] << 8 | p[2];
-#else
-                    color = p[0] | p[1] << 8 | p[2] << 16;
-#endif
-                break;
-
-          case 4:
-                color = *reinterpret_cast<Uint32*>(p);
-                break;
-
-          default:
-                color = *p;
-                break;
-        }
-
-        unsigned char r, g, b, a;
-
-        SDL_GetRGBA(color, surface->format, &r, &g, &b, &a);
-        SDL_UnlockSurface(surface);
-
-        return Color(r, g, b, a);
-    }
-
-    /**
-     * Puts a pixel on an SDL_Surface.
-     *
-     * @param x the x coordinate on the surface.
-     * @param y the y coordinate on the surface.
-     * @param color the color the pixel should be in.
-     */
-    inline void SDLputPixel(SDL_Surface* surface, int x, int y,
-                            const Color& color)
-    {
-        if (!surface)
-            return;
-
-        int bpp = surface->format->BytesPerPixel;
-
-        SDL_LockSurface(surface);
-
-        Uint8 *p = static_cast<uint8_t*>(surface->pixels)
-            + y * surface->pitch + x * bpp;
-
-        Uint32 pixel = SDL_MapRGB(surface->format,
-            static_cast<uint8_t>(color.r), static_cast<uint8_t>(color.g),
-            static_cast<uint8_t>(color.b));
-
-        switch (bpp)
-        {
-            case 1:
-                *p = static_cast<uint8_t>(pixel);
-                break;
-
-            case 2:
-                *reinterpret_cast<uint16_t*>(p) = static_cast<uint16_t>(pixel);
-                break;
-
-            case 3:
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-                p[0] = static_cast<uint8_t>((pixel >> 16) & 0xff);
-                p[1] = static_cast<uint8_t>((pixel >> 8) & 0xff);
-                p[2] = static_cast<uint8_t>((pixel) & 0xff);
-#else
-                p[0] = static_cast<uint8_t>((pixel) & 0xff);
-                p[1] = static_cast<uint8_t>((pixel >> 8) & 0xff);
-                p[2] = static_cast<uint8_t>((pixel >> 16) & 0xff);
-#endif
-                break;
-
-            case 4:
-                *reinterpret_cast<Uint32*>(p) = pixel;
-                break;
-
-            default:
-                break;
-        }
-
-        SDL_UnlockSurface(surface);
-    }
-
-    /**
-     * Blends two 32 bit colors together.
-     *
-     * @param src the source color.
-     * @param dst the destination color.
-     * @param a alpha.
-     */
-    inline unsigned int SDLAlpha32(unsigned int src, unsigned int dst,
-                                   unsigned char a)
-    {
-        unsigned int b = ((src & 0xff) * a + (dst & 0xff) * (255 - a)) >> 8;
-        unsigned int g = ((src & 0xff00) * a + (dst & 0xff00)
-            * (255 - a)) >> 8;
-        unsigned int r = ((src & 0xff0000) * a + (dst & 0xff0000)
-            * (255 - a)) >> 8;
-
-        return (b & 0xff) | (g & 0xff00) | (r & 0xff0000);
-    }
-
-    /**
-     * Blends two 16 bit colors together.
-     *
-     * @param src the source color.
-     * @param dst the destination color.
-     * @param a alpha.
-     */
-    inline unsigned short SDLAlpha16(unsigned short src, unsigned short dst,
-                                     unsigned char a, const SDL_PixelFormat *f)
-    {
-        unsigned int b = ((src & f->Rmask) * a + (dst & f->Rmask)
-            * (255 - a)) >> 8;
-        unsigned int g = ((src & f->Gmask) * a + (dst & f->Gmask)
-            * (255 - a)) >> 8;
-        unsigned int r = ((src & f->Bmask) * a + (dst & f->Bmask)
-            * (255 - a)) >> 8;
-
-        return static_cast<unsigned short>((b & f->Rmask)
-            | (g & f->Gmask) | (r & f->Bmask));
-    }
-
-    /*
-    typedef struct{
-        SDL_Palette *palette;
-        Uint8  BitsPerPixel;
-        Uint8  BytesPerPixel;
-        Uint32 Rmask, Gmask, Bmask, Amask;
-        Uint8  Rshift, Gshift, Bshift, Ashift;
-        Uint8  Rloss, Gloss, Bloss, Aloss;
-        Uint32 colorkey;
-        Uint8  alpha;
-    } SDL_PixelFormat;
-    */
-
-    /**
-     * Puts a pixel on an SDL_Surface with alpha
-     *
-     * @param x the x coordinate on the surface.
-     * @param y the y coordinate on the surface.
-     * @param color the color the pixel should be in.
-     */
-    inline void SDLputPixelAlpha(SDL_Surface* surface, int x, int y,
-                                 const Color& color)
-    {
-        int bpp = surface->format->BytesPerPixel;
-
-        SDL_LockSurface(surface);
-
-        Uint8 *p = static_cast<uint8_t*>(surface->pixels)
-            + y * surface->pitch + x * bpp;
-
-        Uint32 pixel = SDL_MapRGB(surface->format,
-            static_cast<uint8_t>(color.r),
-            static_cast<uint8_t>(color.g),
-            static_cast<uint8_t>(color.b));
-
-        switch (bpp)
-        {
-            case 1:
-                *p = static_cast<uint8_t>(pixel);
-                break;
-
-            case 2:
-                *reinterpret_cast<Uint16*>(p) = SDLAlpha16(
-                    static_cast<unsigned short>(pixel),
-                    *reinterpret_cast<unsigned short*>(p),
-                    static_cast<unsigned char>(color.a), surface->format);
-                break;
-
-            case 3:
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-                p[2] = static_cast<uint8_t>((p[2] * (255 - color.a)
-                    + color.b * color.a) >> 8);
-                p[1] = static_cast<uint8_t>((p[1] * (255 - color.a)
-                    + color.g * color.a) >> 8);
-                p[0] = static_cast<uint8_t>((p[0] * (255 - color.a)
-                    + color.r * color.a) >> 8);
-#else
-                p[0] = static_cast<uint8_t>((p[0] * (255 - color.a)
-                    + color.b * color.a) >> 8);
-                p[1] = static_cast<uint8_t>((p[1] * (255 - color.a)
-                    + color.g * color.a) >> 8);
-                p[2] = static_cast<uint8_t>((p[2] * (255 - color.a)
-                    + color.r * color.a) >> 8);
-#endif
-                break;
-
-            case 4:
-                *reinterpret_cast<Uint32*>(p) = SDLAlpha32(pixel,
-                    *reinterpret_cast<Uint32*>(p),
-                    static_cast<unsigned char>(color.a));
-                break;
-            default:
-                break;
-        }
-
-        SDL_UnlockSurface(surface);
-    }
-}  // namespace gcn
-
-#endif  // end GCN_SDLPIXEL_HPP
diff --git a/src/render/sdl2graphics.cpp b/src/render/sdl2graphics.cpp
index 46d8360b6..2cd7c965e 100644
--- a/src/render/sdl2graphics.cpp
+++ b/src/render/sdl2graphics.cpp
@@ -79,7 +79,7 @@
 
 #include "utils/sdlcheckutils.h"
 
-#include "gui/base/sdl/sdlpixel.hpp"
+#include "utils/sdlpixel.h"
 
 #include "debug.h"
 
diff --git a/src/render/sdl2softwaregraphics.cpp b/src/render/sdl2softwaregraphics.cpp
index e78a87c7e..8efd73d68 100644
--- a/src/render/sdl2softwaregraphics.cpp
+++ b/src/render/sdl2softwaregraphics.cpp
@@ -36,7 +36,7 @@
 
 #include "utils/sdlcheckutils.h"
 
-#include "gui/base/sdl/sdlpixel.hpp"
+#include "utils/sdlpixel.h"
 
 #include "debug.h"
 
@@ -967,7 +967,7 @@ void SDL2SoftwareGraphics::fillRectangle(const gcn::Rectangle &rectangle)
                     for (x = x1; x < x2; x++)
                     {
                         uint8_t *const p = p0 + x * 2;
-                        *reinterpret_cast<uint16_t *>(p) = gcn::SDLAlpha16(
+                        *reinterpret_cast<uint16_t *>(p) = SDLAlpha16(
                             static_cast<uint16_t>(pixel),
                             *reinterpret_cast<uint16_t *>(p),
                             static_cast<uint8_t>(mColor.a), mSurface->format);
diff --git a/src/render/sdlgraphics.cpp b/src/render/sdlgraphics.cpp
index 2226be0da..7a15713be 100644
--- a/src/render/sdlgraphics.cpp
+++ b/src/render/sdlgraphics.cpp
@@ -31,7 +31,7 @@
 
 #include "utils/sdlcheckutils.h"
 
-#include "gui/base/sdl/sdlpixel.hpp"
+#include "utils/sdlpixel.h"
 
 #include "debug.h"
 
@@ -963,7 +963,7 @@ void SDLGraphics::fillRectangle(const gcn::Rectangle& rectangle)
                     for (x = x1; x < x2; x++)
                     {
                         uint8_t *const p = p0 + x * 2;
-                        *reinterpret_cast<uint16_t *>(p) = gcn::SDLAlpha16(
+                        *reinterpret_cast<uint16_t *>(p) = SDLAlpha16(
                             static_cast<uint16_t>(pixel),
                             *reinterpret_cast<uint16_t *>(p),
                             static_cast<uint8_t>(mColor.a), mWindow->format);
diff --git a/src/utils/sdlpixel.h b/src/utils/sdlpixel.h
new file mode 100644
index 000000000..2a26f28a1
--- /dev/null
+++ b/src/utils/sdlpixel.h
@@ -0,0 +1,232 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2011-2014  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*      _______   __   __  __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * 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.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * 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
+ * OWNER 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.
+ */
+
+#ifndef UTILS_SDLPIXEL_HPP
+#define UTILS_SDLPIXEL_HPP
+
+#include "SDL.h"
+#include "gui/base/color.hpp"
+
+/**
+  * Puts a pixel on an SDL_Surface.
+  *
+  * @param x the x coordinate on the surface.
+  * @param y the y coordinate on the surface.
+  * @param color the color the pixel should be in.
+  */
+inline void SDLputPixel(SDL_Surface* surface, int x, int y,
+                        const gcn::Color& color)
+{
+    if (!surface)
+        return;
+
+    int bpp = surface->format->BytesPerPixel;
+
+    SDL_LockSurface(surface);
+
+    Uint8 *p = static_cast<uint8_t*>(surface->pixels)
+        + y * surface->pitch + x * bpp;
+
+    Uint32 pixel = SDL_MapRGB(surface->format,
+        static_cast<uint8_t>(color.r), static_cast<uint8_t>(color.g),
+        static_cast<uint8_t>(color.b));
+
+    switch (bpp)
+    {
+        case 1:
+            *p = static_cast<uint8_t>(pixel);
+            break;
+
+        case 2:
+            *reinterpret_cast<uint16_t*>(p) = static_cast<uint16_t>(pixel);
+            break;
+
+        case 3:
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+            p[0] = static_cast<uint8_t>((pixel >> 16) & 0xff);
+            p[1] = static_cast<uint8_t>((pixel >> 8) & 0xff);
+            p[2] = static_cast<uint8_t>((pixel) & 0xff);
+#else
+            p[0] = static_cast<uint8_t>((pixel) & 0xff);
+            p[1] = static_cast<uint8_t>((pixel >> 8) & 0xff);
+            p[2] = static_cast<uint8_t>((pixel >> 16) & 0xff);
+#endif
+            break;
+
+        case 4:
+            *reinterpret_cast<Uint32*>(p) = pixel;
+            break;
+
+        default:
+            break;
+    }
+
+    SDL_UnlockSurface(surface);
+}
+
+/**
+  * Blends two 32 bit colors together.
+  *
+  * @param src the source color.
+  * @param dst the destination color.
+  * @param a alpha.
+  */
+inline unsigned int SDLAlpha32(unsigned int src, unsigned int dst,
+                               unsigned char a)
+{
+    unsigned int b = ((src & 0xff) * a + (dst & 0xff) * (255 - a)) >> 8;
+    unsigned int g = ((src & 0xff00) * a + (dst & 0xff00)
+        * (255 - a)) >> 8;
+    unsigned int r = ((src & 0xff0000) * a + (dst & 0xff0000)
+        * (255 - a)) >> 8;
+
+    return (b & 0xff) | (g & 0xff00) | (r & 0xff0000);
+}
+
+/**
+  * Blends two 16 bit colors together.
+  *
+  * @param src the source color.
+  * @param dst the destination color.
+  * @param a alpha.
+  */
+inline unsigned short SDLAlpha16(unsigned short src, unsigned short dst,
+                                  unsigned char a, const SDL_PixelFormat *f)
+{
+    unsigned int b = ((src & f->Rmask) * a + (dst & f->Rmask)
+        * (255 - a)) >> 8;
+    unsigned int g = ((src & f->Gmask) * a + (dst & f->Gmask)
+        * (255 - a)) >> 8;
+    unsigned int r = ((src & f->Bmask) * a + (dst & f->Bmask)
+        * (255 - a)) >> 8;
+
+    return static_cast<unsigned short>((b & f->Rmask)
+        | (g & f->Gmask) | (r & f->Bmask));
+}
+
+/**
+  * Puts a pixel on an SDL_Surface with alpha
+  *
+  * @param x the x coordinate on the surface.
+  * @param y the y coordinate on the surface.
+  * @param color the color the pixel should be in.
+  */
+inline void SDLputPixelAlpha(SDL_Surface* surface, int x, int y,
+                             const gcn::Color& color)
+{
+    int bpp = surface->format->BytesPerPixel;
+
+    SDL_LockSurface(surface);
+
+    Uint8 *p = static_cast<uint8_t*>(surface->pixels)
+        + y * surface->pitch + x * bpp;
+
+    Uint32 pixel = SDL_MapRGB(surface->format,
+        static_cast<uint8_t>(color.r),
+        static_cast<uint8_t>(color.g),
+        static_cast<uint8_t>(color.b));
+
+    switch (bpp)
+    {
+        case 1:
+            *p = static_cast<uint8_t>(pixel);
+            break;
+
+        case 2:
+            *reinterpret_cast<Uint16*>(p) = SDLAlpha16(
+                static_cast<unsigned short>(pixel),
+                *reinterpret_cast<unsigned short*>(p),
+                static_cast<unsigned char>(color.a), surface->format);
+            break;
+
+        case 3:
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+            p[2] = static_cast<uint8_t>((p[2] * (255 - color.a)
+                + color.b * color.a) >> 8);
+            p[1] = static_cast<uint8_t>((p[1] * (255 - color.a)
+                + color.g * color.a) >> 8);
+            p[0] = static_cast<uint8_t>((p[0] * (255 - color.a)
+                + color.r * color.a) >> 8);
+#else
+            p[0] = static_cast<uint8_t>((p[0] * (255 - color.a)
+                + color.b * color.a) >> 8);
+            p[1] = static_cast<uint8_t>((p[1] * (255 - color.a)
+                + color.g * color.a) >> 8);
+            p[2] = static_cast<uint8_t>((p[2] * (255 - color.a)
+                + color.r * color.a) >> 8);
+#endif
+            break;
+
+        case 4:
+            *reinterpret_cast<Uint32*>(p) = SDLAlpha32(pixel,
+                *reinterpret_cast<Uint32*>(p),
+                static_cast<unsigned char>(color.a));
+            break;
+        default:
+            break;
+    }
+
+    SDL_UnlockSurface(surface);
+}
+
+#endif  // UTILS_SDLPIXEL_HPP