/* * 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 IMAGE_H #define IMAGE_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 #ifdef ANDROID #include <GLES/gl.h> #else #define GL_GLEXT_PROTOTYPES 1 #include <SDL_opengl.h> #endif #endif #include <map> class Dye; struct Position; /** * Defines a class for loading and storing images. */ class Image : public Resource { friend class CompoundSprite; friend class Graphics; friend class ImageHelper; friend class OpenGLImageHelper; friend class SDLImageHelper; #ifdef USE_OPENGL friend class AtlasManager; friend class MobileOpenGLGraphics; friend class NormalOpenGLGraphics; friend class SafeOpenGLGraphics; #endif public: A_DELETE_COPY(Image) /** * Destructor. */ virtual ~Image(); /** * Frees the resources created by SDL. */ virtual void unload(); /** * Tells is the image is loaded */ bool isLoaded() const A_WARN_UNUSED { return mLoaded; } /** * Returns the width of the image. */ inline int getWidth() const A_WARN_UNUSED { return mBounds.w; } /** * Returns the height of the image. */ inline int getHeight() const A_WARN_UNUSED { return mBounds.h; } /** * Tells if the image has got an alpha channel * @return true if it's true, false otherwise. */ bool hasAlphaChannel() const A_WARN_UNUSED; /** * Sets the alpha value of this image. */ virtual void setAlpha(float alpha); /** * Returns the alpha value of this image. */ float getAlpha() const A_WARN_UNUSED { 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(const int x, const int y, const int width, const int height) A_WARN_UNUSED; // 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(const int width, const int height) const A_WARN_UNUSED; /** * Get the alpha Channel of a SDL surface. */ uint8_t *SDLgetAlphaChannel() const A_WARN_UNUSED { return mAlphaChannel; } void SDLCleanCache(); void SDLTerminateAlphaCache(); #ifdef USE_OPENGL int getTextureWidth() const A_WARN_UNUSED { return mTexWidth; } int getTextureHeight() const A_WARN_UNUSED { return mTexHeight; } GLuint getGLImage() const A_WARN_UNUSED { return mGLImage; } GLuint mGLImage; int mTexWidth; int mTexHeight; #endif bool isHasAlphaChannel() const A_WARN_UNUSED { return mHasAlphaChannel; } bool isAlphaVisible() const A_WARN_UNUSED { return mIsAlphaVisible; } void setAlphaVisible(const bool b) { mIsAlphaVisible = b; } bool isAlphaCalculated() const A_WARN_UNUSED { return mIsAlphaCalculated; } void setAlphaCalculated(const bool b) { mIsAlphaCalculated = b; } SDL_Rect mBounds; protected: // ----------------------- // Generic protected members // ----------------------- bool mLoaded; float mAlpha; bool mHasAlphaChannel; // ----------------------- // SDL protected members // ----------------------- /** SDL Constructor */ Image(SDL_Surface *const image, const bool hasAlphaChannel = false, uint8_t *const alphaChannel = nullptr); SDL_Surface *getByAlpha(const float alpha) A_WARN_UNUSED; SDL_Surface *mSDLSurface; /** Alpha Channel pointer used for 32bit based SDL surfaces */ uint8_t *mAlphaChannel; std::map<float, SDL_Surface*> mAlphaCache; bool mUseAlphaCache; bool mIsAlphaVisible; bool mIsAlphaCalculated; // ----------------------- // OpenGL protected members // ----------------------- #ifdef USE_OPENGL /** * OpenGL Constructor. */ Image(const GLuint glimage, const int width, const int height, const int texWidth, const int texHeight); #endif }; #endif