Daniel@0: /* Part of DML (Digital Music Laboratory)
Daniel@0: 	Copyright 2014-2015 Samer Abdallah, University of London
Daniel@0: 	 
Daniel@0: 	This program is free software; you can redistribute it and/or
Daniel@0: 	modify it under the terms of the GNU General Public License
Daniel@0: 	as published by the Free Software Foundation; either version 2
Daniel@0: 	of the License, or (at your option) any later version.
Daniel@0: 
Daniel@0: 	This program is distributed in the hope that it will be useful,
Daniel@0: 	but WITHOUT ANY WARRANTY; without even the implied warranty of
Daniel@0: 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Daniel@0: 	GNU General Public License for more details.
Daniel@0: 
Daniel@0: 	You should have received a copy of the GNU General Public
Daniel@0: 	License along with this library; if not, write to the Free Software
Daniel@0: 	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Daniel@0: */
Daniel@0: 
Daniel@0: :- module(cp_r_fig,
Daniel@0:       [ figure//4
Daniel@0:       , figure//3
Daniel@0:       , term_rendering//3
Daniel@0:       ]).
Daniel@0: 
Daniel@0: :- meta_predicate figure(0,+,+,+,?,?).
Daniel@0: :- meta_predicate figure(0,+,+,?,?).
Daniel@0: 
Daniel@0: :- use_module(library(http/http_dispatch),[http_link_to_id/3]).
Daniel@0: :- use_module(library(http/html_write)).
Daniel@0: :- use_module(library(http/html_head)).
Daniel@0: :- use_module(library(dcg_core)).
Daniel@0: :- use_module(library(listutils)).
Daniel@0: :- use_module(library(optutils)).
Daniel@0: :- use_module(library(pengines_io)).
Daniel@0: :- use_module(library(swish/render)).
Daniel@0: :- use_module(library(code_cache)).
Daniel@0: :- use_module(library(insist)).
Daniel@0: :- use_module(library(real)).
Daniel@0: :- use_module(components(smartimg)).
Daniel@0: 
Daniel@0: :- register_renderer(rfig,"Render R figures").
Daniel@0: 
Daniel@0: term_rendering(rfig(Code),_,Opts) --> 
Daniel@0:    {rendering_options(Opts,Opts1)},
Daniel@0:    figure(r(Code),Opts1).
Daniel@0: term_rendering(rfig(Code,W,H),_,Opts) --> 
Daniel@0:    term_rendering(rfig(Code),_,[width(W),height(H)|Opts]).
Daniel@0: term_rendering(rfig(Code,FOpts),_,Opts) -->
Daniel@0:    {merge_options(FOpts,Opts,Opts1)},
Daniel@0:    term_rendering(rfig(Code),_,Opts1).
Daniel@0: 
Daniel@0: rendering_options -->
Daniel@0:    seqmap(option_default_select,[module(_),numbervars(_),quoted(_)],_).
Daniel@0: 
Daniel@0: 
Daniel@0: %% figure(+Code:callable, +Width:natural, +Height:natural, +Params:list)// is det.
Daniel@0: %% figure(+Code:callable, +Width:natural, +Height:natural)// is det.
Daniel@0: %
Daniel@0: %  Component to render an R figure into a HTML code. Code must be a Prolog
Daniel@0: %  goal that renders the desired figure.
Daniel@0: %  The default figure format (eg SVG or PNG) is taken from the default_figure_format
Daniel@0: %  setting. See figure_render/1 for valid parameters. 
Daniel@0: figure(Code,W,H) --> figure(Code,[width(W),height(H)]).
Daniel@0: figure(Code,W,H,Params) --> figure(Code,[width(W),height(H)|Params]).
Daniel@0: figure(Code,Params) -->
Daniel@0:    {  debug(r_fig,"figure(~q,~q)",[Code,Params]),
Daniel@0:       process_options(Download,Smart,Code,Params,Params1),
Daniel@0:       insist(option(width(W),Params1), missing_parameter(width)),
Daniel@0:       insist(option(height(H),Params1), missing_parameter(height)),
Daniel@0:       http_link_to_id(r_figure_render, Params1, URL)
Daniel@0:    },
Daniel@0:    (  {Download=true}
Daniel@0:    -> { option_default_select(format(_),_,Params1,Params2)},
Daniel@0:       html(div([\image(Smart,URL,W,H),br([]),'Download as:', \download(pdf,Params2), \download(eps,Params2)]))
Daniel@0:    ;  image(Smart,URL,W,H)
Daniel@0:    ).
Daniel@0: 
Daniel@0: download(F,Params) -->
Daniel@0:    {http_link_to_id(r_figure_render,[format(F)|Params],URL)},
Daniel@0:    html([' ',a([href(URL),download],F)]).
Daniel@0: 
Daniel@0: 
Daniel@0: process_options(Download,Smart,Code) -->
Daniel@0:    {setting(r_plot:default_figure_format,Fmt0)},
Daniel@0:    seqmap(option_default_select, [format(Fmt), cache(Cache), downloadable(Download), smart(Smart)],
Daniel@0:                                  [Fmt0,false,false,false]),
Daniel@0:    (select_option(color_map(CM)) -> {term_to_atom(CM,CMA)}, cons(color_map(CMA)); []),
Daniel@0:    (select_option(size(W,H)) -> cons(width(W)), cons(height(H)); []),
Daniel@0:    {Cache=true -> cache_code(Download,Code,Code1); Code=Code1},
Daniel@0:    {term_to_atom(Code1,CodeAtom)},
Daniel@0:    cons(format(Fmt)),
Daniel@0:    cons(code(CodeAtom)).