SDL_Cursor * SDL_CreateColorCursor(SDL_Surface *surface, int hot_x, int hot_y) { SDL_Mouse *mouse = SDL_GetMouse(); SDL_Surface *temp = NULL; SDL_Cursor *cursor; if (!surface) { SDL_SetError("Passed NULL cursor surface"); return NULL; } if (!mouse->CreateCursor) { SDL_SetError("Cursors are not currently supported"); return NULL; } /* Sanity check the hot spot */ if ((hot_x < 0) || (hot_y < 0) || (hot_x >= surface->w) || (hot_y >= surface->h)) { SDL_SetError("Cursor hot spot doesn't lie within cursor"); return NULL; } if (surface->format->format != SDL_PIXELFORMAT_ARGB8888) { temp = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_ARGB8888, 0); if (!temp) { return NULL; } surface = temp; } cursor = mouse->CreateCursor(surface, hot_x, hot_y); if (cursor) { cursor->next = mouse->cursors; mouse->cursors = cursor; } if (temp) { SDL_FreeSurface(temp); } return cursor; }
SDL_Cursor * SDL_CreateCursor(const Uint8 * data, const Uint8 * mask, int w, int h, int hot_x, int hot_y) { SDL_Mouse *mouse = &SDL_mouse; SDL_Surface *surface; SDL_Cursor *cursor; int x, y; Uint32 *pixel; Uint8 datab = 0, maskb = 0; const Uint32 black = 0xFF000000; const Uint32 white = 0xFFFFFFFF; const Uint32 transparent = 0x00000000; if (!mouse->CreateCursor) { SDL_SetError("Cursors are not currently supported"); return NULL; } /* Sanity check the hot spot */ if ((hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h)) { SDL_SetError("Cursor hot spot doesn't lie within cursor"); return NULL; } /* Make sure the width is a multiple of 8 */ w = ((w + 7) & ~7); /* Create the surface from a bitmap */ surface = SDL_CreateRGBSurface(0, w, h, 32, 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000); if (!surface) { return NULL; } for (y = 0; y < h; ++y) { pixel = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch); for (x = 0; x < w; ++x) { if ((x % 8) == 0) { datab = *data++; maskb = *mask++; } if (maskb & 0x80) { *pixel++ = (datab & 0x80) ? black : white; } else { *pixel++ = (datab & 0x80) ? black : transparent; } datab <<= 1; maskb <<= 1; } } cursor = mouse->CreateCursor(surface, hot_x, hot_y); if (cursor) { cursor->next = mouse->cursors; mouse->cursors = cursor; } SDL_FreeSurface(surface); return cursor; }