Anonymous

void main()
{
        /* Load the image */
        char[] filename = "/home/joe/plasma.png";
        ubyte[] image;
        Info info = lodepng.png.decode32(image, cast(ubyte[])read(filename));
        if (info.error != 0)
                throw new Exception("Error loading png " ~ filename ~ ", errorcode: " ~ toString(info.error));
        if(image.length % 4 != 0)
                throw new Exception("Failcopter");
        ubyte[] data;
        for(uint i; i<image.length; i+=4){
                data ~= image[i+2];
                data ~= image[i+1];
                data ~= image[i];
                data ~= image[i+3];
}
 
        image = null;
 
        /* Display the image to an X window, with XCB */
        int screen_num;
        xcb_connection_t* conn = xcb_connect(null, &screen_num);
        /* Get the preferred screen. */
        xcb_screen_iterator_t screen_iter = xcb_setup_roots_iterator(xcb_get_setup(conn));
        while(screen_num--)
                xcb_screen_next(&screen_iter);
        xcb_screen_t* screen = screen_iter.data;
        xcb_window_t window = xcb_generate_id(conn);
 
        xcb_create_window(conn,                          /* connection    */
                          0,                             /* depth         */
                          window,                        /* window id     */
                          screen.root,                  /* parent window */
                          0, 0,                          /* x, y          */
                          info.w, info.w,                /* width, height */
                          0,                             /* border_width  */
                          XCB_WINDOW_CLASS_INPUT_OUTPUT, /* class         */
                          screen.root_visual,           /* visual        */
                          XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, /* masks */
                          cast(uint*)[screen.black_pixel, XCB_EVENT_MASK_EXPOSURE]);
 
        xcb_map_window(conn, window);
        xcb_gcontext_t gc = xcb_generate_id(conn);
        xcb_create_gc(conn, gc, window, 0, null);
 
        /*
        Visual* vis = XDefaultVisualOfScreen(screen);
        XImage* im = XCreateImage(disp, vis, 24, ZPixmap, 0, data.ptr, info.w, info.h, 8, 0);
        data = null;
        XPutImage(disp, win, gc, im, 0, 0, 0, 0, info.w, info.h);
	*/
        xcb_flush(conn);
 
        xcb_generic_event_t *event;
        while(1) {
                event = xcb_wait_for_event(conn);
                if(event.response_type == XCB_EXPOSE) {
                        xcb_put_image(conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
                                      window, gc,
                                      info.w, info.h, /* width, height */
                                      0, 0,           /* dst_x, dst_y */
                                      0, 24,          /* left_pad, depth */
                                      data.length, data.ptr);
                        xcb_flush(conn);
}
}
}