Move static methods from Image class to ImageHelper class.

Remove SDL merge method. It was very slow and unused.

1 files changed, 170 insertions, 0 deletions

diff --git a/src/resources/imagehelper.h b/src/resources/imagehelper.h
new file mode 100644
index 000000000..680794625
--- /dev/null
+++ b/src/resources/imagehelper.h
@@ -0,0 +1,170 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2012  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 IMAGEHELPER_H
+#define IMAGEHELPER_H
+
+#include "localconsts.h"
+#include "main.h"
+
+#include "resources/resource.h"
+
+#include <SDL.h>
+
+#ifdef USE_OPENGL
+
+/* The definition of OpenGL extensions by SDL is giving problems with recent
+ * gl.h headers, since they also include these definitions. As we're not using
+ * extensions anyway it's safe to just disable the SDL version.
+ */
+//#define NO_SDL_GLEXT
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <SDL_opengl.h>
+#endif
+
+#include <map>
+
+class Dye;
+class Image;
+
+struct Position;
+
+/**
+ * Defines a class for loading and storing images.
+ */
+class ImageHelper : public Resource
+{
+    friend class CompoundSprite;
+    friend class Graphics;
+    friend class Image;
+#ifdef USE_OPENGL
+    friend class OpenGLGraphics;
+    friend class OpenGL1Graphics;
+#endif
+
+    public:
+        /**
+         * Loads an image from an SDL_RWops structure.
+         *
+         * @param rw         The SDL_RWops to load the image from.
+         *
+         * @return <code>NULL</code> if an error occurred, a valid pointer
+         *         otherwise.
+         */
+        static Resource *load(SDL_RWops *rw);
+
+        /**
+         * 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.
+         */
+        static Resource *load(SDL_RWops *rw, Dye const &dye);
+
+        /**
+         * Loads an image from an SDL surface.
+         */
+        static Image *load(SDL_Surface *);
+
+        static SDL_Surface *convertTo32Bit(SDL_Surface* tmpImage);
+
+        static Image *createTextSurface(SDL_Surface *tmpImage, float alpha);
+
+        static void SDLSetEnableAlphaCache(bool n)
+        { mEnableAlphaCache = n; }
+
+        static bool SDLGetEnableAlphaCache()
+        { return mEnableAlphaCache; }
+
+        static void setEnableAlpha(bool n)
+        { mEnableAlpha = n; }
+
+#ifdef USE_OPENGL
+
+        // OpenGL only public functions
+
+        /**
+         * Sets the target image format. Use <code>false</code> for SDL and
+         * <code>true</code> for OpenGL.
+         */
+        static void setLoadAsOpenGL(int useOpenGL);
+
+        static int getLoadAsOpenGL()
+        { return mUseOpenGL; }
+
+        static int getTextureType()
+        { return mTextureType; }
+
+        static int getInternalTextureType()
+        { return mInternalTextureType; }
+
+        static void setInternalTextureType(int n)
+        { mInternalTextureType = n; }
+
+        static void setBlur(bool n)
+        { mBlur = n; }
+
+        static int mTextureType;
+
+        static int mInternalTextureType;
+
+        static void dumpSurfaceFormat(SDL_Surface *image);
+
+        static SDL_Surface* SDLDuplicateSurface(SDL_Surface* tmpImage);
+
+#endif
+
+         /**
+         * Tells if the image was loaded using OpenGL or SDL
+         * @return true if OpenGL, false if SDL.
+         */
+        static int useOpenGL();
+
+    protected:
+        /** SDL_Surface to SDL_Surface Image loader */
+        static Image *_SDLload(SDL_Surface *tmpImage);
+
+        static bool mEnableAlphaCache;
+        static bool mEnableAlpha;
+
+        // -----------------------
+        // OpenGL protected members
+        // -----------------------
+#ifdef USE_OPENGL
+        /**
+         * Returns the first power of two equal or bigger than the input.
+         */
+        static int powerOfTwo(int input);
+
+        static Image *_GLload(SDL_Surface *tmpImage);
+
+        static int mUseOpenGL;
+        static int mTextureSize;
+        static bool mBlur;
+#endif
+};
+
+#endif