add SurfaceImageHelper for loading/processing surfaces for SDL2.

For SDL1.2 used SDLImageHelper.

1 files changed, 108 insertions, 0 deletions

diff --git a/src/resources/surfaceimagehelper.h b/src/resources/surfaceimagehelper.h
new file mode 100644
index 000000000..afc80cbbb
--- /dev/null
+++ b/src/resources/surfaceimagehelper.h
@@ -0,0 +1,108 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2013  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/>.
+ */
+
+#ifndef RESOURCES_SURFACEIMAGEHELPER_H
+#define RESOURCES_SURFACEIMAGEHELPER_H
+
+#ifndef USE_SDL2
+#include "resources/sdlimagehelper.h"
+
+#else
+
+#include "localconsts.h"
+
+#include "resources/imagehelper.h"
+
+#include <SDL.h>
+
+class Dye;
+class Image;
+
+/**
+ * Defines a class for loading and storing images.
+ */
+class SurfaceImageHelper final : public ImageHelper
+{
+    friend class Image;
+
+    public:
+        SurfaceImageHelper()
+        { }
+
+        A_DELETE_COPY(SurfaceImageHelper)
+
+        virtual ~SurfaceImageHelper()
+        { }
+
+        /**
+         * Loads an image from an SDL_RWops structure and recolors it.
+         *
+         * @param rw         The SDL_RWops to load the image from.
+         * @param dye        The dye used to recolor the image.
+         *
+         * @return <code>NULL</code> if an error occurred, a valid pointer
+         *         otherwise.
+         */
+        Image *load(SDL_RWops *const rw,
+                    Dye const &dye) const override A_WARN_UNUSED;
+
+        /**
+         * Loads an image from an SDL surface.
+         */
+        Image *load(SDL_Surface *const tmpImage) const override A_WARN_UNUSED;
+
+        Image *createTextSurface(SDL_Surface *const tmpImage,
+                                 const int width, const int height,
+                                 const float alpha)
+                                 const override A_WARN_UNUSED;
+
+        static void SDLSetEnableAlphaCache(const bool n)
+        { mEnableAlphaCache = n; }
+
+        static bool SDLGetEnableAlphaCache() A_WARN_UNUSED
+        { return mEnableAlphaCache; }
+
+         /**
+         * Tells if the image was loaded using OpenGL or SDL
+         * @return true if OpenGL, false if SDL.
+         */
+        int useOpenGL() const override A_WARN_UNUSED;
+
+        static SDL_Surface* SDLDuplicateSurface(SDL_Surface *const tmpImage)
+                                                A_WARN_UNUSED;
+
+        SDL_Surface *create32BitSurface(int width, int height) const override;
+
+        static int combineSurface(SDL_Surface *const src,
+                                  SDL_Rect *const srcrect,
+                                  SDL_Surface *const dst,
+                                  SDL_Rect *const dstrect);
+
+    protected:
+        /** SDL_Surface to SDL_Surface Image loader */
+        Image *_SDLload(SDL_Surface *tmpImage) const A_WARN_UNUSED;
+
+        static bool mEnableAlphaCache;
+};
+
+#endif  // USE_SDL2
+#endif  // RESOURCES_SURFACEIMAGEHELPER_H