XScreenSaver(1) XScreenSaver(1) NNAAMMEE webcollage - decorate the screen with random images from the web SSYYNNOOPPSSIISS wweebbccoollllaaggee [-display _h_o_s_t_:_d_i_s_p_l_a_y_._s_c_r_e_e_n] [-root] [-ver- bose] [-delay _s_e_c_s] [-timeout _s_e_c_s] [-background _b_g] [-filter _c_o_m_m_a_n_d] [-filter2 _c_o_m_m_a_n_d] DDEESSCCRRIIPPTTIIOONN The _w_e_b_c_o_l_l_a_g_e program pulls random image off of the World Wide Web and scatters them on the root window. It finds these images by doing random web searches, and extracting images from the returned pages. It places the images on the root window by using the xxvv(1), ggiiffttooppnnmm(1), and ddjjppeegg(1) tools. _w_e_b_c_o_l_l_a_g_e also works as a CGI program: simply make a sym- bolic link to the _w_e_b_c_o_l_l_a_g_e executable called _n_p_h_-_w_e_b_c_o_l_- _l_a_g_e_._c_g_i. If this program sees that it is being run as a CGI, then it will behave appropriately. (The generated web page will list the images one after another, rather than tiling them together.) _w_e_b_c_o_l_l_a_g_e is written in ppeerrll(1) and requires Perl 5. OOPPTTIIOONNSS _w_e_b_c_o_l_l_a_g_e accepts the following options: --rroooott Draw on the root window. This option is mandi- tory: drawing to a window other than the root win- dow is not yet supported. --vveerrbboossee or --vv Print diagnostics to stderr. Multiple _-_v switches increase the amount of output. _-_v will print out only the URLs of the images; _-_v_v will print all the commands being run; and _-_v_v_v will print more than you care about. --ddeellaayy _s_e_c_o_n_d_s How long to sleep between images. Default 1 sec- ond. (Remember that this program probably spends a lot of time waiting for the network.) --bbaacckkggrroouunndd _c_o_l_o_r_-_o_r_-_p_p_m What to use for the background onto which images are pasted. This may be a color name, a hexadeci- mal RGB specification in the form '#rrggbb', or the name of a PPM file. --ttiimmeeoouutt _s_e_c_o_n_d_s How long to wait for a URL to complete before giv- ing up on it and moving on to the next one. X Version 11 17-Jun-99 1 XScreenSaver(1) XScreenSaver(1) Default 30 seconds. --ffiilltteerr _c_o_m_m_a_n_d Filter all source images through this command. The command must take a PPM file on stdin, and write a new PPM file to stdout. One good choice for a filter would be: webcollage -root -filter 'vidwhacker -stdin -stdout' --ffiilltteerr22 _c_o_m_m_a_n_d Filter the _c_o_m_p_o_s_i_t_e image through this command. The _-_f_i_l_t_e_r option applies to the sub-images; the _-_f_i_l_t_e_r_2 applies to the final, full-screen image. EENNVVIIRROONNMMEENNTT DDIISSPPLLAAYY to get the default host and display number. XXEENNVVIIRROONNMMEENNTT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MAN- AGER property. FFIILLEESS AANNDD UURRLLSS _/_u_s_r_/_d_i_c_t_/_w_o_r_d_s or _/_u_s_r_/_s_h_a_r_e_/_l_i_b_/_d_i_c_t_/_w_o_r_d_s To find the random words to feed to search engines. _h_t_t_p_:_/_/_r_a_n_d_o_m_._y_a_h_o_o_._c_o_m_/_b_i_n_/_r_y_l_, _h_t_t_p_:_/_/_i_m_a_g_e_._a_l_t_a_v_i_s_t_a_._c_o_m_/ To find random web pages. BBUUGGSS When drawing on the root window, it always uses the default colormap. This is actually a limitation of xv. But regardless, when using this program with xscreensaver, it must be given the ddeeffaauulltt--nn visual specification (see the xxssccrreeeennssaavveerr(1) manual for more details.) Only the GIF and JPEG image formats are supported. Transparent and animating GIFs are not supported. It's slow. SSEEEE AALLSSOO XX(1), xxssccrreeeennssaavveerr(1), xxvv(1), ggiiffttooppnnmm(1), ddjjppeegg(1), vviidd-- wwhhaacckkeerr(1), ppeerrll(1) CCOOPPYYRRIIGGHHTT Copyright (C) 1998, 1999 by Jamie Zawinski. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted with- out fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this X Version 11 17-Jun-99 2 XScreenSaver(1) XScreenSaver(1) permission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. AAUUTTHHOORR Jamie Zawinski , 24-May-98. X Version 11 17-Jun-99 3