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# -*- coding: latin-1 -*-
"HTML Renderer for FPDF.py"
__author__ = "Mariano Reingart <[email protected]>"
__copyright__ = "Copyright (C) 2010 Mariano Reingart"
__license__ = "LGPL 3.0"
# Inspired by tuto5.py and several examples from fpdf.org, html2fpdf, etc.
from .fpdf import FPDF
from .py3k import PY3K, basestring, unicode, HTMLParser
DEBUG = False
def px2mm(px):
return int(px)*25.4/72.0
def hex2dec(color = "#000000"):
if color:
r = int(color[1:3], 16)
g = int(color[3:5], 16)
b = int(color[5:7], 16)
return r, g, b
class HTML2FPDF(HTMLParser):
"Render basic HTML to FPDF"
def __init__(self, pdf, image_map=None):
HTMLParser.__init__(self)
self.style = {}
self.pre = False
self.href = ''
self.align = ''
self.page_links = {}
self.font = None
self.font_stack = []
self.pdf = pdf
self.image_map = image_map or (lambda src: src)
self.r = self.g = self.b = 0
self.indent = 0
self.bullet = []
self.set_font("times", 12)
self.font_face = "times" # initialize font
self.color = 0 #initialize font color
self.table = None # table attributes
self.table_col_width = None # column (header) widths
self.table_col_index = None # current column index
self.td = None # cell attributes
self.th = False # header enabled
self.tr = None
self.theader = None # table header cells
self.tfooter = None # table footer cells
self.thead = None
self.tfoot = None
self.theader_out = self.tfooter_out = False
self.hsize = dict(h1=2, h2=1.5, h3=1.17, h4=1, h5=0.83, h6=0.67)
def width2mm(self, length):
if length[-1]=='%':
total = self.pdf.w - self.pdf.r_margin - self.pdf.l_margin
if self.table['width'][-1]=='%':
total *= int(self.table['width'][:-1])/100.0
return int(length[:-1]) * total / 101.0
else:
return int(length) / 6.0
def handle_data(self, txt):
if self.td is not None: # drawing a table?
if 'width' not in self.td and 'colspan' not in self.td:
try:
l = [self.table_col_width[self.table_col_index]]
except IndexError:
raise RuntimeError("Table column/cell width not specified, unable to continue")
elif 'colspan' in self.td:
i = self.table_col_index
colspan = int(self.td['colspan'])
l = self.table_col_width[i:i+colspan]
else:
l = [self.td.get('width','240')]
w = sum([self.width2mm(lenght) for lenght in l])
h = int(self.td.get('height', 0)) / 4 or self.h*1.30
self.table_h = h
border = int(self.table.get('border', 0))
if not self.th:
align = self.td.get('align', 'L')[0].upper()
border = border and 'LR'
else:
self.set_style('B',True)
border = border or 'B'
align = self.td.get('align', 'C')[0].upper()
bgcolor = hex2dec(self.td.get('bgcolor', self.tr.get('bgcolor', '')))
# parsing table header/footer (drawn later):
if self.thead is not None:
self.theader.append(((w,h,txt,border,0,align), bgcolor))
if self.tfoot is not None:
self.tfooter.append(((w,h,txt,border,0,align), bgcolor))
# check if reached end of page, add table footer and header:
height = h + (self.tfooter and self.tfooter[0][0][1] or 0)
if self.pdf.y+height>self.pdf.page_break_trigger and not self.th:
self.output_table_footer()
self.pdf.add_page()
self.theader_out = self.tfooter_out = False
if self.tfoot is None and self.thead is None:
if not self.theader_out:
self.output_table_header()
self.box_shadow(w, h, bgcolor)
if DEBUG: print("td cell", self.pdf.x, w, txt, "*")
self.pdf.cell(w,h,txt,border,0,align)
elif self.table is not None:
# ignore anything else than td inside a table
pass
elif self.align:
if DEBUG: print("cell", txt, "*")
self.pdf.cell(0,self.h,txt,0,1,self.align[0].upper(), self.href)
else:
txt = txt.replace("\n"," ")
if self.href:
self.put_link(self.href,txt)
else:
if DEBUG: print("write", txt, "*")
self.pdf.write(self.h,txt)
def box_shadow(self, w, h, bgcolor):
if DEBUG: print("box_shadow", w, h, bgcolor)
if bgcolor:
fill_color = self.pdf.fill_color
self.pdf.set_fill_color(*bgcolor)
self.pdf.rect(self.pdf.x, self.pdf.y, w, h, 'F')
self.pdf.fill_color = fill_color
def output_table_header(self):
if self.theader:
b = self.b
x = self.pdf.x
self.pdf.set_x(self.table_offset)
self.set_style('B',True)
for cell, bgcolor in self.theader:
self.box_shadow(cell[0], cell[1], bgcolor)
self.pdf.cell(*cell)
self.set_style('B',b)
self.pdf.ln(self.theader[0][0][1])
self.pdf.set_x(self.table_offset)
#self.pdf.set_x(x)
self.theader_out = True
def output_table_footer(self):
if self.tfooter:
x = self.pdf.x
self.pdf.set_x(self.table_offset)
#TODO: self.output_table_sep()
for cell, bgcolor in self.tfooter:
self.box_shadow(cell[0], cell[1], bgcolor)
self.pdf.cell(*cell)
self.pdf.ln(self.tfooter[0][0][1])
self.pdf.set_x(x)
if int(self.table.get('border', 0)):
self.output_table_sep()
self.tfooter_out = True
def output_table_sep(self):
self.pdf.set_x(self.table_offset)
x1 = self.pdf.x
y1 = self.pdf.y
w = sum([self.width2mm(lenght) for lenght in self.table_col_width])
self.pdf.line(x1,y1,x1+w,y1)
def handle_starttag(self, tag, attrs):
attrs = dict(attrs)
if DEBUG: print("STARTTAG", tag, attrs)
if tag=='b' or tag=='i' or tag=='u':
self.set_style(tag,1)
if tag=='a':
self.href=attrs['href']
if tag=='br':
self.pdf.ln(5)
if tag=='p':
self.pdf.ln(5)
if attrs:
if attrs: self.align = attrs.get('align')
if tag in self.hsize:
k = self.hsize[tag]
self.pdf.ln(5*k)
self.pdf.set_text_color(150,0,0)
self.pdf.set_font_size(12 * k)
if attrs: self.align = attrs.get('align')
if tag=='hr':
self.put_line()
if tag=='pre':
self.pdf.set_font('Courier','',11)
self.pdf.set_font_size(11)
self.set_style('B',False)
self.set_style('I',False)
self.pre = True
if tag=='blockquote':
self.set_text_color(100,0,45)
self.pdf.ln(3)
if tag=='ul':
self.indent+=1
self.bullet.append('\x95')
if tag=='ol':
self.indent+=1
self.bullet.append(0)
if tag=='li':
self.pdf.ln(self.h+2)
self.pdf.set_text_color(190,0,0)
bullet = self.bullet[self.indent-1]
if not isinstance(bullet, basestring):
bullet += 1
self.bullet[self.indent-1] = bullet
bullet = "%s. " % bullet
self.pdf.write(self.h,'%s%s ' % (' '*5*self.indent, bullet))
self.set_text_color()
if tag=='font':
# save previous font state:
self.font_stack.append((self.font_face, self.font_size, self.color))
if 'color' in attrs:
self.color = hex2dec(attrs['color'])
self.set_text_color(*color)
self.color = color
if 'face' in attrs:
face = attrs.get('face').lower()
try:
self.pdf.set_font(face)
self.font_face = face
except RuntimeError:
pass # font not found, ignore
if 'size' in attrs:
size = int(attrs.get('size'))
self.pdf.set_font(self.font_face, size=int(size))
self.font_size = size
if tag=='table':
self.table = dict([(k.lower(), v) for k,v in attrs.items()])
if not 'width' in self.table:
self.table['width'] = '100%'
if self.table['width'][-1]=='%':
w = self.pdf.w - self.pdf.r_margin - self.pdf.l_margin
w *= int(self.table['width'][:-1])/100.0
self.table_offset = (self.pdf.w-w)/2.0
self.table_col_width = []
self.theader_out = self.tfooter_out = False
self.theader = []
self.tfooter = []
self.thead = None
self.tfoot = None
self.table_h = 0
self.pdf.ln()
if tag=='tr':
self.tr = dict([(k.lower(), v) for k,v in attrs.items()])
self.table_col_index = 0
self.pdf.set_x(self.table_offset)
if tag=='td':
self.td = dict([(k.lower(), v) for k,v in attrs.items()])
if tag=='th':
self.td = dict([(k.lower(), v) for k,v in attrs.items()])
self.th = True
if 'width' in self.td:
self.table_col_width.append(self.td['width'])
if tag=='thead':
self.thead = {}
if tag=='tfoot':
self.tfoot = {}
if tag=='img':
if 'src' in attrs:
x = self.pdf.get_x()
y = self.pdf.get_y()
w = px2mm(attrs.get('width', 0))
h = px2mm(attrs.get('height',0))
if self.align and self.align[0].upper() == 'C':
x = (self.pdf.w-x)/2.0 - w/2.0
self.pdf.image(self.image_map(attrs['src']),
x, y, w, h, link=self.href)
self.pdf.set_x(x+w)
self.pdf.set_y(y+h)
if tag=='b' or tag=='i' or tag=='u':
self.set_style(tag, True)
if tag=='center':
self.align = 'Center'
def handle_endtag(self, tag):
#Closing tag
if DEBUG: print("ENDTAG", tag)
if tag=='h1' or tag=='h2' or tag=='h3' or tag=='h4':
self.pdf.ln(6)
self.set_font()
self.set_style()
self.align = None
if tag=='pre':
self.pdf.set_font(self.font or 'Times','',12)
self.pdf.set_font_size(12)
self.pre=False
if tag=='blockquote':
self.set_text_color(0,0,0)
self.pdf.ln(3)
if tag=='strong':
tag='b'
if tag=='em':
tag='i'
if tag=='b' or tag=='i' or tag=='u':
self.set_style(tag, False)
if tag=='a':
self.href=''
if tag=='p':
self.align=''
if tag in ('ul', 'ol'):
self.indent-=1
self.bullet.pop()
if tag=='table':
if not self.tfooter_out:
self.output_table_footer()
self.table = None
self.th = False
self.theader = None
self.tfooter = None
self.pdf.ln()
if tag=='thead':
self.thead = None
if tag=='tfoot':
self.tfoot = None
if tag=='tbody':
# draw a line separator between table bodies
self.pdf.set_x(self.table_offset)
self.output_table_sep()
if tag=='tr':
h = self.table_h
if self.tfoot is None:
self.pdf.ln(h)
self.tr = None
if tag=='td' or tag=='th':
if self.th:
if DEBUG: print("revert style")
self.set_style('B', False) # revert style
self.table_col_index += int(self.td.get('colspan','1'))
self.td = None
self.th = False
if tag=='font':
# recover last font state
face, size, color = self.font_stack.pop()
if face:
self.pdf.set_text_color(0,0,0)
self.color = None
self.set_font(face, size)
self.font = None
if tag=='center':
self.align = None
def set_font(self, face=None, size=None):
if face:
self.font_face = face
if size:
self.font_size = size
self.h = size / 72.0*25.4
if DEBUG: print("H", self.h)
self.pdf.set_font(self.font_face or 'times','',12)
self.pdf.set_font_size(self.font_size or 12)
self.set_style('u', False)
self.set_style('b', False)
self.set_style('i', False)
self.set_text_color()
def set_style(self, tag=None, enable=None):
#Modify style and select corresponding font
if tag:
t = self.style.get(tag.lower())
self.style[tag.lower()] = enable
style=''
for s in ('b','i','u'):
if self.style.get(s):
style+=s
if DEBUG: print("SET_FONT_STYLE", style)
self.pdf.set_font('',style)
def set_text_color(self, r=None, g=0, b=0):
if r is None:
self.pdf.set_text_color(self.r,self.g,self.b)
else:
self.pdf.set_text_color(r, g, b)
self.r = r
self.g = g
self.b = b
def put_link(self, url, txt):
#Put a hyperlink
self.set_text_color(0,0,255)
self.set_style('u', True)
self.pdf.write(5,txt,url)
self.set_style('u', False)
self.set_text_color(0)
def put_line(self):
self.pdf.ln(2)
self.pdf.line(self.pdf.get_x(),self.pdf.get_y(),self.pdf.get_x()+187,self.pdf.get_y())
self.pdf.ln(3)
class HTMLMixin(object):
def write_html(self, text, image_map=None):
"Parse HTML and convert it to PDF"
h2p = HTML2FPDF(self, image_map)
text = h2p.unescape(text) # To deal with HTML entities
h2p.feed(text)
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