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Diffstat (limited to 'src/guichan/sdl/sdlimage.cpp')
| -rw-r--r-- | src/guichan/sdl/sdlimage.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/guichan/sdl/sdlimage.cpp b/src/guichan/sdl/sdlimage.cpp new file mode 100644 index 000000000..cab5effdb --- /dev/null +++ b/src/guichan/sdl/sdlimage.cpp @@ -0,0 +1,185 @@ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson + * + * + * Per Larsson a.k.a finalman + * Olof Naessén a.k.a jansem/yakslem + * + * Visit: http://guichan.sourceforge.net + * + * License: (BSD) + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name of Guichan nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * For comments regarding functions please see the header file. + */ + +#include "guichan/sdl/sdlimage.hpp" + +#include "guichan/exception.hpp" +#include "guichan/sdl/sdlpixel.hpp" + +namespace gcn +{ + SDLImage::SDLImage(SDL_Surface* surface, bool autoFree) + { + mAutoFree = autoFree; + mSurface = surface; + } + + SDLImage::~SDLImage() + { + if (mAutoFree) + { + free(); + } + } + + SDL_Surface* SDLImage::getSurface() const + { + return mSurface; + } + + int SDLImage::getWidth() const + { + if (mSurface == NULL) + { + throw GCN_EXCEPTION("Trying to get the width of a non loaded image."); + } + + return mSurface->w; + } + + int SDLImage::getHeight() const + { + if (mSurface == NULL) + { + throw GCN_EXCEPTION("Trying to get the height of a non loaded image."); + } + + return mSurface->h; + } + + Color SDLImage::getPixel(int x, int y) + { + if (mSurface == NULL) + { + throw GCN_EXCEPTION("Trying to get a pixel from a non loaded image."); + } + + return SDLgetPixel(mSurface, x, y); + } + + void SDLImage::putPixel(int x, int y, const Color& color) + { + if (mSurface == NULL) + { + throw GCN_EXCEPTION("Trying to put a pixel in a non loaded image."); + } + + SDLputPixel(mSurface, x, y, color); + } + + void SDLImage::convertToDisplayFormat() + { + if (mSurface == NULL) + { + throw GCN_EXCEPTION("Trying to convert a non loaded image to display format."); + } + + int i; + bool hasPink = false; + bool hasAlpha = false; + + for (i = 0; i < mSurface->w * mSurface->h; ++i) + { + if (((unsigned int*)mSurface->pixels)[i] == SDL_MapRGB(mSurface->format,255,0,255)) + { + hasPink = true; + break; + } + } + + for (i = 0; i < mSurface->w * mSurface->h; ++i) + { + Uint8 r, g, b, a; + + SDL_GetRGBA(((unsigned int*)mSurface->pixels)[i], mSurface->format, + &r, &g, &b, &a); + + if (a != 255) + { + hasAlpha = true; + break; + } + } + + SDL_Surface *tmp; + + if (hasAlpha) + { + tmp = SDL_DisplayFormatAlpha(mSurface); + SDL_FreeSurface(mSurface); + mSurface = NULL; + } + else + { + tmp = SDL_DisplayFormat(mSurface); + SDL_FreeSurface(mSurface); + mSurface = NULL; + } + + if (tmp == NULL) + { + throw GCN_EXCEPTION("Unable to convert image to display format."); + } + + if (hasPink) + { + SDL_SetColorKey(tmp, SDL_SRCCOLORKEY, + SDL_MapRGB(tmp->format,255,0,255)); + } + if (hasAlpha) + { + SDL_SetAlpha(tmp, SDL_SRCALPHA, 255); + } + + mSurface = tmp; + } + + void SDLImage::free() + { + SDL_FreeSurface(mSurface); + } +} |