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from reportlab.platypus import BaseDocTemplate, PageTemplate, Frame 

from reportlab.lib.units import mm



from StringIO import StringIO

#import sys

import sys, os.path as osp



def libpath( libname ):

  base = osp.dirname( osp.dirname( osp.abspath( __file__ ) ) )

  #base = osp.dirname( osp.dirname( __file__ ) ) 

  #base = osp.dirname( osp.abspath( __file__ ) ) 

  lib = osp.join( base, libname ) 

  #head, tail = osp.split( base )

  #if tail == 'site-packages': # TEST

  #  lib = osp.join( base, libname ) 

  #elif tail == 'contpdf': # TEST

  #  lib = osp.join( osp.dirname( base ), libname )

  #else:

  #  lib = osp.join( base, libname ) 

  # s/contweb/contweb/contpdf/sqlutil/pdfreport.py       ---> s/contweb

  # in online installato

  # s/contweb/contweb/sqlutil/pdfreport.py ---> s/contweb

  #  base = osp.dirname( osp.dirname( nfile ) )

  #lib = osp.join( base, libname ) 

  #print __file__, base, lib

#  if not osp.isdir( static ):

#    base = osp.join( osp.join( sys.prefix, 'share' ), appname )

#    static = osp.join( base, 'static' ) 

#  print base, lib

  return lib



class pdfpage (PageTemplate):

  ''' template per pagine di report calcistico

      --------- header ---------------------------------

      	logo	riga 1

      	logo   	riga 2

      --------------------------------------------------

      	spazio per flowables

  '''

  def __init__( self, id, psize ):

    xm = 10*mm                                   # margine (destro = sinistro)

    xt = psize[0] - xm*2                         # larghezza frame testo

    yh = (20*mm,10*mm)[psize[0] > psize[1]]      # altezza dell'header 

    ytm = yh + 4*mm                              # margine alto

    ybm = 10*mm                                  # margine basso

    yt = psize[1] - (ytm + ybm)                  # altezza frame testo

    yp = (ytm - yh) / 2

    self.hpos = ( xm, psize[1] - yh - yp )

    self.hdim = ( yh * 1.4, yh )

    body = Frame( xm, ybm, xt, yt, id='body' )

    PageTemplate.__init__( self, id, [body], pagesize=psize )

  def getlogo( self, dbname=None ): return None

  def gettitle( self, dbname=None ): return 'APDF', ''

  def beforeDrawPage( self, canvas, doc ):

    canvas.saveState()

    ln = self.getlogo( getattr( doc, 'dbname', None ) )

    xt = self.hpos[0] + self.hdim[0] + 5*mm

    if ln: canvas.drawImage( ln, self.hpos[0], self.hpos[1], self.hdim[0], self.hdim[1] )

    title = self.gettitle( getattr( doc, 'dbname', None ) )

    if doc.pagesize[0] > doc.pagesize[1]: # landscape

      t = (title[0] or '') + ' - ' + (title[1] or '')

      yt = self.hpos[1] + ((self.hdim[1] - 20) / 2)

      canvas.setFont( 'Times-Roman', 16, 20 )

      canvas.drawString( xt, yt, t )

    else:

      if title[0]:

        canvas.setFont( 'Times-Bold', 20, 24 )

        canvas.drawString( xt, self.hpos[1] + self.hdim[1] / 2, title[0] )

      if title[1]:

        canvas.setFont( 'Times-Roman', 12, 14 )

        canvas.drawString( xt, self.hpos[1], title[1] )

    canvas.restoreState()



class pdfreport (BaseDocTemplate):

  def __init__( self, filename, **kw ):

    BaseDocTemplate.__init__( self, filename, **kw )

    self.author = 'reportlab'

    self.dbname = None

  def make( self, crs, dbname=None ):

    ''' costruisce il documento '''

    if dbname: self.dbname = dbname

    lflow = self.getstory( crs )

    # attenzione occorre gestire anche multiBuild

    #print lflow

    return self.build( lflow )

  def makestr( self, crs, dbname=None ):

    if dbname: self.dbname = dbname

    lflow = self.getstory( crs )

    fd = StringIO()

    self.build( lflow, fd )

    s = fd.getvalue() 

    fd.close()

    return s

  def getstory( self, crs ): 

    ''' ritorna l'elenco dei flowables che compongono il documento '''

    return list()