Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.

1 files changed, 308 insertions, 0 deletions

diff --git a/src/resources/image.h b/src/resources/image.h
new file mode 100644
index 000000000..7145b9d48
--- /dev/null
+++ b/src/resources/image.h
@@ -0,0 +1,308 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana 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 IMAGE_H
+#define IMAGE_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
+
+#include <SDL_opengl.h>
+#endif
+
+#include <map>
+
+class Dye;
+class Position;
+
+/**
+ * Defines a class for loading and storing images.
+ */
+class Image : public Resource
+{
+    friend class CompoundSprite;
+    friend class Graphics;
+#ifdef USE_OPENGL
+    friend class OpenGLGraphics;
+    friend class OpenGL1Graphics;
+#endif
+
+    public:
+        /**
+         * Destructor.
+         */
+        virtual ~Image();
+
+        /**
+         * Loads an image from a buffer in memory.
+         *
+         * @param buffer     The memory buffer containing the image data.
+         * @param bufferSize The size of the memory buffer in bytes.
+         *
+         * @return <code>NULL</code> if an error occurred, a valid pointer
+         *         otherwise.
+         */
+        static Resource *load(void *buffer, unsigned bufferSize);
+
+        /**
+         * Loads an image from a buffer in memory and recolors it.
+         *
+         * @param buffer     The memory buffer containing the image data.
+         * @param bufferSize The size of the memory buffer in bytes.
+         * @param dye        The dye used to recolor the image.
+         *
+         * @return <code>NULL</code> if an error occurred, a valid pointer
+         *         otherwise.
+         */
+        static Resource *load(void *buffer, unsigned bufferSize,
+                              Dye const &dye);
+
+        /**
+         * Loads an image from an SDL surface.
+         */
+        static Image *load(SDL_Surface *);
+
+        static SDL_Surface* convertTo32Bit(SDL_Surface* tmpImage);
+
+        /**
+         * Frees the resources created by SDL.
+         */
+        virtual void unload();
+
+        /**
+         * Tells is the image is loaded
+         */
+        bool isLoaded()
+        { return mLoaded; }
+
+        /**
+         * Returns the width of the image.
+         */
+        inline int getWidth() const     // was virtual
+        { return mBounds.w; }
+
+        /**
+         * Returns the height of the image.
+         */
+        inline int getHeight() const     // was virtual
+        { return mBounds.h; }
+
+        /**
+         * Tells if the image was loaded using OpenGL or SDL
+         * @return true if OpenGL, false if SDL.
+         */
+        int useOpenGL() const;
+
+        /**
+         * Tells if the image has got an alpha channel
+         * @return true if it's true, false otherwise.
+         */
+        bool hasAlphaChannel();
+
+        /**
+         * Sets the alpha value of this image.
+         */
+        virtual void setAlpha(float alpha);
+
+        /**
+         * Returns the alpha value of this image.
+         */
+        float getAlpha() const
+        { return mAlpha; }
+
+        /**
+         * Creates a new image with the desired clipping rectangle.
+         *
+         * @return <code>NULL</code> if creation failed and a valid
+         *         object otherwise.
+         */
+        virtual Image *getSubImage(int x, int y, int width, int height);
+
+
+        // SDL only public functions
+
+        /**
+         * Gets an scaled instance of an image.
+         *
+         * @param width The desired width of the scaled image.
+         * @param height The desired height of the scaled image.
+         *
+         * @return A new Image* object.
+         */
+        Image* SDLgetScaledImage(int width, int height);
+
+        /**
+         * Merges two image SDL_Surfaces together. This is for SDL use only, as
+         * reducing the number of surfaces that SDL has to render can cut down
+         * on the number of blit operations necessary, which in turn can help
+         * improve overall framerates. Don't use unless you are using it to
+         * reduce the number of overall layers that need to be drawn through SDL.
+         */
+        Image *SDLmerge(Image *image, int x, int y);
+
+        /**
+         * Get the alpha Channel of a SDL surface.
+         */
+        Uint8 *SDLgetAlphaChannel() const
+        { return mAlphaChannel; }
+
+        SDL_Surface* SDLDuplicateSurface(SDL_Surface* tmpImage);
+
+        void SDLCleanCache();
+
+        void SDLTerminateAlphaCache();
+
+        static void SDLSetEnableAlphaCache(bool n)
+        { mEnableAlphaCache = n; }
+
+        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; }
+
+        int getTextureWidth() const
+        { return mTexWidth; }
+
+        int getTextureHeight() const
+        { return mTexHeight; }
+
+        static int getTextureType()
+        { return mTextureType; }
+#endif
+
+    protected:
+
+      // -----------------------
+      // Generic protected members
+      // -----------------------
+
+        SDL_Rect mBounds;
+        bool mLoaded;
+        float mAlpha;
+        bool mHasAlphaChannel;
+
+      // -----------------------
+      // SDL protected members
+      // -----------------------
+
+        /** SDL Constructor */
+        Image(SDL_Surface *image, bool hasAlphaChannel = false,
+              Uint8 *alphaChannel = NULL);
+
+        /** SDL_Surface to SDL_Surface Image loader */
+        static Image *_SDLload(SDL_Surface *tmpImage);
+
+        SDL_Surface *getByAlpha(float alpha);
+
+        SDL_Surface *mSDLSurface;
+
+        /** Alpha Channel pointer used for 32bit based SDL surfaces */
+        Uint8 *mAlphaChannel;
+
+        std::map<float, SDL_Surface*> mAlphaCache;
+
+        bool mUseAlphaCache;
+
+        static bool mEnableAlphaCache;
+        static bool mEnableAlpha;
+
+        // -----------------------
+        // OpenGL protected members
+        // -----------------------
+#ifdef USE_OPENGL
+        /**
+         * OpenGL Constructor.
+         */
+        Image(GLuint glimage, int width, int height,
+              int texWidth, int texHeight);
+
+        /**
+         * Returns the first power of two equal or bigger than the input.
+         */
+        static int powerOfTwo(int input);
+
+        static Image *_GLload(SDL_Surface *tmpImage);
+
+        GLuint mGLImage;
+        int mTexWidth, mTexHeight;
+
+        static int mUseOpenGL;
+        static int mTextureType;
+        static int mTextureSize;
+#endif
+};
+
+/**
+ * A clipped version of a larger image.
+ */
+class SubImage : public Image
+{
+    public:
+        /**
+         * Constructor.
+         */
+        SubImage(Image *parent, SDL_Surface *image,
+                 int x, int y, int width, int height);
+#ifdef USE_OPENGL
+        SubImage(Image *parent, GLuint image, int x, int y,
+                 int width, int height, int texWidth, int textHeight);
+#endif
+
+        /**
+         * Destructor.
+         */
+        ~SubImage();
+
+        /**
+         * Creates a new image with the desired clipping rectangle.
+         *
+         * @return <code>NULL</code> if creation failed and a valid
+         *         image otherwise.
+         */
+        Image *getSubImage(int x, int y, int width, int height);
+
+    private:
+        Image *mParent;
+};
+
+#endif