;+
;
; @file_comments
; It is the procedure launching the drawing.
; If we do not give the command to it, it call
; construitcommande to know what to trace.
;
; @categories
;
; @param BASE {in}{required}
; The id of the widget where apply the drawing.
;
; @keyword COMMANDE {type=string}
; A string of the style: read_data('sst'...),...
;
; @keyword _EXTRA
; Used to pass keywords
;
; @uses
; <pro>common</pro>
;
; @history
; Sebastien Masson (smasson\@lodyc.jussieu.fr)
;
; @version
; $Id$
;
;-
PRO letsdraw, base, COMMANDE=commande, _EXTRA=ex
;
  compile_opt idl2, strictarrsubs
;
@common
; we recuperate the uvalue of base
; widget_control,base, get_uvalue = top_uvalue
; print, '*****************'
; help,  top_uvalue, /struct
; help,  top_uvalue.exextra, /struct
   if NOT keyword_set(commande) then $
    commande = buildcmd(base, _extra=ex)
   if commande[0] EQ '' then return
; on recupere la uvalue de base
   widget_control, base, /hourglass
   widget_control,base, get_uvalue = top_uvalue
; print, '*****************'
; help,  top_uvalue, /struct
; print, '***..........****'
;  help,  top_uvalue.exextra, /struct
;  help,  top_uvalue.extra, /struct
; print, '-*-*-*-*-*-*-*-*-*'
; print, commande
; help,mixstru(top_uvalue.exextra,top_uvalue.extra), /struct
;
;
; we recuperate the id of the graphic associated to the widget of id base.
   graphid = extractatt(top_uvalue, 'graphid')
   widget_control, graphid, get_value = win
; We select it (we will pass to it all commands concerning the window)
   wset, win
;   erase, 255                       ; we clean the window
; We make sure that, if we work with a screen coding colors on 24 bits, the specified background color !p.background is the one applied.
;    if !d.n_colors gt 256 then begin
;       device, decomposed=1
;       !p.background='ffffff'x
;       plot,[0],[0]
;       device, decomposed=0
;    ENDIF
;
   smallout = long(extractatt(top_uvalue, 'smallout'))
   numdessinout = smallout[2]-1
;
   tracecadre, smallout, /fill
;
;
   options = extractatt(top_uvalue, 'options')
   optionsflag = extractatt(top_uvalue, 'optionsflag')
   portrait = (strtrim(optionsflag[where(options EQ 'Portrait/Landscape'), 0], 1))[0]

;
   createpro, ['@common' $
               , 'noerase = 1' $
               , 'key_portrait = '+ portrait $
               , Commande] $
    , filename =  myuniquetmpdir + 'xxx_oneplot.pro'
;
   inserthistory, base, Commande,'; beginning of '+strtrim(smallout[2], 1) $
    , '; end of '+strtrim(smallout[2], 1)
;
   (*top_uvalue[1, findline(top_uvalue, 'penvs')])[numdessinout] = !p
   (*top_uvalue[1, findline(top_uvalue, 'xenvs')])[numdessinout] = !x
   (*top_uvalue[1, findline(top_uvalue, 'yenvs')])[numdessinout] = !y

   return
end