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/*
* 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
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