;+
;
; @file_comments
;
; @categories
;
; @param EVENT
;
; @returns
;
; @uses
;
; @restrictions
;
; @examples
;
; @history
;
; @version
; $Id$
;
; @todo
; seb
;
;-
PRO xcreateanim_event, event
;
  compile_opt idl2, strictarrsubs
;
@common

; We recuperate arguments contained in the widget
  if tag_names(event, /structure_name) NE 'WIDGET_BUTTON' then return
  widget_control, event.id, get_uvalue = uval
  if n_elements(uval) EQ 0 then return
  if uval EQ 'cancel' then begin
    widget_control, event.top, /destroy
    return
  ENDIF
; We will write the animation!
;
  widget_control, event.top, get_uvalue = local_uvalue
  widget_control, local_uvalue.parent, get_uvalue = top_uvalue
;
  calendar = (*(extractatt(top_uvalue, 'fileparameters'))[local_uvalue.indexfile]).time_counter
  key_caltype = (*(extractatt(top_uvalue, 'fileparameters'))[local_uvalue.indexfile]).caltype
  fakecal = (*(extractatt(top_uvalue, 'fileparameters'))[local_uvalue.indexfile]).fakecal
;
  widget_control, widget_info(event.top, find_by_uname = 'Filename') $
                  , get_value = nomfic & nomfic = nomfic[0]
;
  widget_control, widget_info(event.top, find_by_uname = 'directorie') $
                  , get_value = animdir & animdir = animdir[0]
;
  widget_control, widget_info(event.top, find_by_uname = 'debut') $
                  , get_value = vdate1
  index1 = (where(abs(calendar - date2jul(vdate1)) LT 1./86400.))[0]
  if index1 EQ -1 then return
;
  widget_control, widget_info(event.handler, find_by_uname = 'fin') $
                  , get_value = vdate2
  index2 = (where(abs(calendar - date2jul(vdate2)) LT 1./86400.))[0]
  if index2 EQ -1 OR index2 LE index1 then return
; We delete the widget before create the file .ps
  widget_control, event.top, /destroy
;
; creation of the routine which will serve us to do the drawing
;
; We recuperate the list of instructions
  globalcommand = extractatt(top_uvalue, 'globalcommand')
; We complete by first and last lines of the program
  createpro, globalcommand, filename = myuniquetmpdir + 'xxx2ps.pro' $
             , KWDLIST = ', NOERASE = noerase, POSTSCRIPT = postscript, DATE1IN = date1in, DATE2IN = date2in'
;
;--------creation of the file---------
;
;  we recuperate the number of octets on which we code the palette.
  device, get_visual_depth = depth
; Picture's size (in number of pixels):
  xsize = !d.x_size
  ysize = !d.y_size
;
; We check that the file's name end by .gif
  if strpos(nomfic, '.gif') EQ -1 then nomfic = nomfic+'.gif'

  current_window = !d.window
  window, /free, /pixmap, xsize = xsize, ysize = ysize


; indication of the number of the picture we are creating
  base = widget_base()
  sliderid = widget_slider(base, minimum = 1, maximum = index2-index1+1, value = 1 $
                           , title = 'image number: ')
  widget_control, base, /realize
;
; Beginning of the gif file. Writing of an empty picture.
  IF keyword_set(fakecal) THEN date = index1 ELSE date = jul2date(calendar[index1])
  xxx2ps, /noerase, date1in = date, date2in = date
;
;
  image = tvrd(true = depth GT 8)
;- If an 8-bit image was read, reduce the number of colors
  if depth le 8 then begin
    tvlct, red, green, blue, /get
    reduce_colors, image, index
    red = red[index]
    green = green[index]
    blue = blue[index]
  endif
;
  if depth gt 8 then $
;- Convert 24-bit image to 8-bit
  image = color_quan(image, 1, red, green, blue, colors = 256, get_translation = translation, /map_all)
;
;
  write_gif, animdir+nomfic, image, red, green, blue, /multiple
  wdelete, !d.window
;
; Creation and writting loop in the file.
;
  IF index2 GT index1 THEN BEGIN
    FOR ind = index1+1, index2 do BEGIN
;
      widget_control, sliderid, set_value = ind-index1+1 ; We move the slider.
;
      window, /free, /pixmap, xsize = xsize, ysize = ysize
      IF keyword_set(fakecal) THEN date = ind ELSE date = jul2date(calendar[ind])
      xxx2ps, /noerase, date1 = date, date2 = date
;
      image = tvrd(true = depth GT 8)
;
      if depth gt 8 then $
        image = color_quan(image, 1, aaa, bbb, ccc, colors = 256, translation = translation) ;
;
      write_gif, animdir+nomfic, image, red, green, blue, /multiple
      wdelete, !d.window
    ENDFOR
  ENDIF
; We put a last white picture
  window, /free, /pixmap, xsize = xsize, ysize = ysize
  reinitplt
  plot,  [0],  [0], /nodata
  image = tvrd(true = depth GT 8)
;
  if depth gt 8 then $
    image = color_quan(image, 1, aaa, bbb, ccc, colors = 256, translation = translation) ;
;
  write_gif, animdir+nomfic, image, red, green, blue, /multiple
  wdelete, !d.window
; File's closing.
  write_gif, animdir+nomfic, /close
  widget_control, base, /destroy
; Rerock in "normal" mode
  thisOS = strupcase(strmid(!version.os_family, 0, 3))
;
  wset, current_window

; If we are under X, we try to launch xanim...

  if thisOS NE 'MAC' AND thisOS NE 'WIN' then begin
    spawn, 'which xanim', result
    if strpos(result[0], 'xanim') EQ strlen(result[0])-5 then spawn, 'xanim '+animdir+nomfic+' &'
  endif
;

  return
end
;
;+
; @file_comments
;
; @categories
;
; @param PARENT
;
; @returns
;
; @uses
;
; @restrictions
;
; @examples
;
; @history
;
; @version
; $Id$
;
; @todo
; seb
;
;-
PRO xcreateanim, parent
;
  compile_opt idl2, strictarrsubs
;
@common
;
   widget_control, parent, get_uvalue = top_uvalue
;
; We will make sure that all procedure are not in pltt
;
   procedures = extractatt(top_uvalue, 'nameprocedures')
   if total(procedures EQ 'pltt') NE 0 then begin
      nothing = report('Certains des plots ont un axe se rapportant au temps. !C Animation impossible!', /error)
      return
   ENDIF
;
; We will make sure that all figure have the same calendar
;
   filelist = extractatt(top_uvalue,  'filelist')
   filenames = (extractatt(top_uvalue,  'varinfo'))[0, *]
   filenames = reform(filenames)
   filenames = filenames[uniq(filenames, sort(filenames))]
   if strtrim(filenames[0], 1) EQ '' then filenames = filenames[1:n_elements(filenames)-1]
   indexfile = (where(filelist EQ filenames[0]))[0]
   calendar = (*(extractatt(top_uvalue, 'fileparameters'))[indexfile]).time_counter
   key_caltype = (*(extractatt(top_uvalue, 'fileparameters'))[indexfile]).caltype
   fakecal = (*(extractatt(top_uvalue, 'fileparameters'))[indexfile]).fakecal
   if n_elements(filenames) GT 1 then begin
      for i = 1, n_elements(filenames)-1 do begin
         indexfilebis = (where(filelist EQ filenames[i]))[0]
         calendarbis = (*(extractatt(top_uvalue, 'fileparameters'))[indexfilebis]).time_counter
         if n_elements(calendarbis) NE n_elements(calendar)  then begin
            nothing = report('plots do not use the same calendar. !C Animation impossible!', /error)
            return
         ENDIF
         if total(calendar NE calendarbis) NE 0 then begin
            nothing = report('plots do not use the same calendar. !C Animation impossible!', /error)
            return
         endif
      endfor
   endif
;
; It is possible to do an animation.
;
   base = widget_base(/column, title = 'animation creation', uvalue = {parent:parent, indexfile:indexfile})
   rien = widget_label(base, value = 'animation name')
   rien = widget_text(base,value='anim_idl.gif', uname='Filename', /editable)
   rien = widget_label(base, value = 'animation directory')
   if n_elements(animdir) EQ 0 then cd, current = animdir
   rien = widget_text(base,value=animdir, uname='directorie', /editable)
   rien = widget_label(base, value = 'starting date')
   rien = cw_calendar(base, calendar, calendar[0] $
                      , FAKECAL = fakecal, uname = 'debut', uvalue = {name:'calendar'}, /frame)
   rien = widget_label(base, value = 'ending date')
   rien = cw_calendar(base, calendar, calendar[n_elements(calendar)-1] $
                      , FAKECAL = fakecal, uname = 'fin', uvalue = {name:'calendar'}, /frame)
   rien = widget_button(base,value='OK', uvalue = 'ok')
   rien = widget_button(base,value='Cancel', uvalue = 'cancel')
;
   widget_control,base,/realize
   xmanager,'xcreateanim', base, /no_block

   return
end