"""This module defines the code to represent a card, and render it on a Piddle
   PDF Canvas. The canvas must provide the non-standard 'wrapString' method.

   Andrew Williams
"""

import piddle
import string

PIL=0
try:
  import Image
  PIL=1
except:
  print "Python Imaging Library not found, disabling image support"


class Card:
  "Represents a card, with methods to create and render on a canvas"
  def __init__(self, edition='', author='', type='', value='', comment='',
               back='', background='', panel=''):
    """Initialise a card.
    """
    self.edition=edition
    self.author=author
    self.type=type
    self.value=value
    self.comment=comment
    self.back=back
    self.background=background
    self.panel=panel


  def draw(self, canvas=None, x=0, y=0, height=100, width=40, border=1):
    """Render (the front of) a card to the canvas, with the specified
       position and dimensions, in points (1/72 inch). If border=1, draw
       a border around the card. 
    """
    saver=piddle.StateSaver(canvas)      #Restore defaults automagically later
    canvas.defaultLineWidth=height/120
    x1,y1,x2,y2 = x, y, x+width, y+height
    tfont=piddle.Font(face='times', size=height/15)
    vfont=piddle.Font(face='times', size=height/24)
    cfont=piddle.Font(face='times', size=height/24)
    afont=piddle.Font(face='times', size=height/24)
    edfont=piddle.Font(face='times', size=height/24)

    if PIL:
      if self.background:
        canvas.drawImage(Image.open(self.background), x1, y1, x2, y2)
      if self.panel:
        p=Image.open(self.panel)
        canvas.drawImage(p, x1+width/10, y1+5*height/16.0, 
                            x2-width/10, y1+12*height/16.0)
    
    canvas.drawRect(x1, y1, x2, y2, piddle.black)
    canvas.drawLine(x1, y1+height/8.0, x2, y1+height/8.0, piddle.black)
    canvas.drawLine(x1, y1+5*height/16.0, x2, y1+5*height/16.0, piddle.black)
    canvas.drawLine(x1, y1+12*height/16.0, x2, y1+12*height/16.0, piddle.black)
    canvas.drawLine(x1, y1+15*height/16.0, x2, y1+15*height/16.0, piddle.black)
    
    canvas.drawString(s=self.type,
                      x=x1+width/2.0-canvas.stringWidth(self.type, tfont)/2.0,
                      y=y1+height/16.0+tfont.size/2,
                      font=tfont,
                      color=piddle.black)

    canvas.drawString(s=self.edition,
                      x=x1+edfont.size/4,
                      y=y1+15*height/16.0+edfont.size,
                      font=edfont,
                      color=piddle.black)

    canvas.drawString(s=self.author,
                      x=x2-afont.size/4-canvas.stringWidth(self.author, edfont),
                      y=y1+15*height/16.0+afont.size,
                      font=afont,
                      color=piddle.black)

    canvas.wrapString(s=self.value,
                      x=x1+vfont.size/4,
                      y=y1+2*height/16.0+vfont.size,
                      width=width-vfont.size/2,
                      font=vfont,
                      color=piddle.black)

    canvas.wrapString(s=self.comment,
                      x=x1+cfont.size/4,
                      y=y1+12*height/16.0+cfont.size,
                      width=width-cfont.size/2,
                      font=cfont,
                      color=piddle.black)