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00059 #include <allegro.h>
00060
00061 #include "guichan/allegro/allegroimageloader.hpp"
00062 #include "guichan/exception.hpp"
00063 #include "guichan/image.hpp"
00064
00065 namespace gcn
00066 {
00067 AllegroImageLoader::AllegroImageLoader()
00068 {
00069 mBmp = NULL;
00070 mRawData = NULL;
00071 }
00072
00073 AllegroImageLoader::~AllegroImageLoader()
00074 {
00075 if (mBmp != NULL)
00076 {
00077 destroy_bitmap(mBmp);
00078 }
00079
00080 if (mRawData != NULL)
00081 {
00082 delete[] mRawData;
00083 }
00084 }
00085
00086 void AllegroImageLoader::prepare(const std::string& filename)
00087 {
00088 if (mBmp != NULL)
00089 {
00090 throw GCN_EXCEPTION(std::string("Older image has not been finalized or discarded") + filename);
00091 }
00092
00093 #if !(ALLEGRO_VERSION == 4 && ALLEGRO_SUB_VERSION == 0)
00094 int colconv = get_color_conversion();
00095 #endif
00096
00097 set_color_conversion(COLORCONV_NONE);
00098
00099 PALETTE pal;
00100 BITMAP *bmp = load_bitmap(filename.c_str(), pal);
00101
00102 if (bmp == NULL)
00103 {
00104 throw GCN_EXCEPTION(std::string("Unable to load: ") + filename);
00105 }
00106
00107 mBmp = create_bitmap_ex(32, bmp->w, bmp->h);
00108
00109 if (mBmp == NULL)
00110 {
00111 throw GCN_EXCEPTION(std::string("Not enough memory to load: ") + filename);
00112 }
00113
00114 set_palette(pal);
00115 blit(bmp, mBmp, 0, 0, 0, 0, bmp->w, bmp->h);
00116 destroy_bitmap(bmp);
00117
00118 #if (ALLEGRO_VERSION == 4 && ALLEGRO_SUB_VERSION == 0)
00119 set_color_conversion(COLORCONV_TOTAL);
00120 #else
00121 set_color_conversion(colconv);
00122 #endif
00123
00124 }
00125
00126 void AllegroImageLoader::free(Image* image)
00127 {
00128 BITMAP *bmp = (BITMAP *)image->_getData();
00129 destroy_bitmap(bmp);
00130 }
00131
00132 void* AllegroImageLoader::getRawData()
00133 {
00134
00135 throw GCN_EXCEPTION("Not implemented yet");
00136
00137
00138 if (mBmp == NULL)
00139 {
00140 GCN_EXCEPTION("No image seems to be loaded");
00141 }
00142
00143 return 0;
00144 }
00145
00146 void* AllegroImageLoader::finalize()
00147 {
00148 if (mBmp == NULL)
00149 {
00150 GCN_EXCEPTION("No image seems to be loaded");
00151 }
00152
00153 BITMAP *bmp = create_bitmap(mBmp->w, mBmp->h);
00154
00155 blit(mBmp, bmp, 0, 0, 0, 0, bmp->w, bmp->h);
00156
00157 mBmp = NULL;
00158
00159 if (mRawData != NULL)
00160 {
00161 delete[] mRawData;
00162 mRawData = NULL;
00163 }
00164
00165 return bmp;
00166 }
00167
00168 void AllegroImageLoader::discard()
00169 {
00170 if (mBmp == NULL)
00171 {
00172 GCN_EXCEPTION("No image seems to be loaded");
00173 }
00174
00175 destroy_bitmap(mBmp);
00176
00177 if (mRawData != NULL)
00178 {
00179 delete[] mRawData;
00180 mRawData = NULL;
00181 }
00182 }
00183
00184 int AllegroImageLoader::getHeight() const
00185 {
00186 if (mBmp == NULL)
00187 {
00188 GCN_EXCEPTION("No image seems to be loaded");
00189 }
00190
00191 return mBmp->h;
00192 }
00193
00194 int AllegroImageLoader::getWidth() const
00195 {
00196 if (mBmp == NULL)
00197 {
00198 GCN_EXCEPTION("No image seems to be loaded");
00199 }
00200
00201 return mBmp->w;
00202 }
00203
00204 Color AllegroImageLoader::getPixel(int x, int y)
00205 {
00206 int c = getpixel(mBmp, x, y);
00207
00208 return Color(getr32(c), getg32(c), getb32(c), geta(32));
00209 }
00210
00211 void AllegroImageLoader::putPixel(int x, int y, const Color& color)
00212 {
00213 int c = makeacol_depth(32, color.r, color.g, color.b, color.a);
00214
00215 putpixel(mBmp, x, y, c);
00216 }
00217 }