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00061 #include "guichan/sdl/sdlimage.hpp"
00062
00063 #include "guichan/exception.hpp"
00064 #include "guichan/sdl/sdlpixel.hpp"
00065
00066 namespace gcn
00067 {
00068 SDLImage::SDLImage(SDL_Surface* surface, bool autoFree)
00069 {
00070 mAutoFree = autoFree;
00071 mSurface = surface;
00072 }
00073
00074 SDLImage::~SDLImage()
00075 {
00076 if (mAutoFree)
00077 {
00078 free();
00079 }
00080 }
00081
00082 SDL_Surface* SDLImage::getSurface() const
00083 {
00084 return mSurface;
00085 }
00086
00087 int SDLImage::getWidth() const
00088 {
00089 if (mSurface == NULL)
00090 {
00091 throw GCN_EXCEPTION("Trying to get the width of a non loaded image.");
00092 }
00093
00094 return mSurface->w;
00095 }
00096
00097 int SDLImage::getHeight() const
00098 {
00099 if (mSurface == NULL)
00100 {
00101 throw GCN_EXCEPTION("Trying to get the height of a non loaded image.");
00102 }
00103
00104 return mSurface->h;
00105 }
00106
00107 Color SDLImage::getPixel(int x, int y)
00108 {
00109 if (mSurface == NULL)
00110 {
00111 throw GCN_EXCEPTION("Trying to get a pixel from a non loaded image.");
00112 }
00113
00114 return SDLgetPixel(mSurface, x, y);
00115 }
00116
00117 void SDLImage::putPixel(int x, int y, const Color& color)
00118 {
00119 if (mSurface == NULL)
00120 {
00121 throw GCN_EXCEPTION("Trying to put a pixel in a non loaded image.");
00122 }
00123
00124 SDLputPixel(mSurface, x, y, color);
00125 }
00126
00127 void SDLImage::convertToDisplayFormat()
00128 {
00129 if (mSurface == NULL)
00130 {
00131 throw GCN_EXCEPTION("Trying to convert a non loaded image to display format.");
00132 }
00133
00134 int i;
00135 bool hasPink = false;
00136 bool hasAlpha = false;
00137
00138 for (i = 0; i < mSurface->w * mSurface->h; ++i)
00139 {
00140 if (((unsigned int*)mSurface->pixels)[i] == SDL_MapRGB(mSurface->format,255,0,255))
00141 {
00142 hasPink = true;
00143 break;
00144 }
00145 }
00146
00147 for (i = 0; i < mSurface->w * mSurface->h; ++i)
00148 {
00149 Uint8 r, g, b, a;
00150
00151 SDL_GetRGBA(((unsigned int*)mSurface->pixels)[i], mSurface->format,
00152 &r, &g, &b, &a);
00153
00154 if (a != 255)
00155 {
00156 hasAlpha = true;
00157 break;
00158 }
00159 }
00160
00161
00162
00163 SDL_Surface *tmp;
00164 if (hasAlpha)
00165 {
00166 tmp = mSurface;
00167 mSurface = NULL;
00168 }
00169 else
00170 {
00171 tmp = SDL_DisplayFormat(mSurface);
00172 SDL_FreeSurface(mSurface);
00173 mSurface = NULL;
00174 }
00175
00176 if (hasPink)
00177 {
00178 SDL_SetColorKey(tmp, SDL_SRCCOLORKEY,
00179 SDL_MapRGB(tmp->format,255,0,255));
00180 }
00181 if (hasAlpha)
00182 {
00183 SDL_SetAlpha(tmp, SDL_SRCALPHA, 255);
00184 }
00185
00186 mSurface = tmp;
00187 }
00188
00189 void SDLImage::free()
00190 {
00191 SDL_FreeSurface(mSurface);
00192 }
00193 }