/usr/lib/python3/dist-packages/xhtml2pdf/tags.py is in python3-xhtml2pdf 0.2.1-1.
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from __future__ import print_function, unicode_literals
from reportlab.graphics.barcode import createBarcodeDrawing
from reportlab.lib.pagesizes import A4
from reportlab.lib.units import inch, mm
from reportlab.platypus.doctemplate import NextPageTemplate, FrameBreak
from reportlab.platypus.flowables import Spacer, HRFlowable, PageBreak, Flowable
from reportlab.platypus.frames import Frame
from reportlab.platypus.paraparser import tt2ps, ABag
from xhtml2pdf import xhtml2pdf_reportlab
from xhtml2pdf.util import getColor, getSize, getAlign, dpi96
from xhtml2pdf.xhtml2pdf_reportlab import PmlImage, PmlPageTemplate
import copy
import logging
import re
import warnings
import six
import string
# Copyright 2010 Dirk Holtwick, holtwick.it
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
log = logging.getLogger("xhtml2pdf")
def deprecation(message):
warnings.warn("<" + message + "> is deprecated!", DeprecationWarning, stacklevel=2)
class pisaTag:
"""
The default class for a tag definition
"""
def __init__(self, node, attr):
self.node = node
self.tag = node.tagName
self.attr = attr
def start(self, c):
pass
def end(self, c):
pass
class pisaTagBODY(pisaTag):
"""
We can also asume that there is a BODY tag because html5lib
adds it for us. Here we take the base font size for later calculations
in the FONT tag.
"""
def start(self, c):
c.baseFontSize = c.frag.fontSize
# print("base font size", c.baseFontSize)
class pisaTagTITLE(pisaTag):
def end(self, c):
c.meta["title"] = c.text
c.clearFrag()
class pisaTagSTYLE(pisaTag):
def start(self, c):
c.addPara()
def end(self, c):
c.clearFrag()
class pisaTagMETA(pisaTag):
def start(self, c):
name = self.attr.name.lower()
if name in ("author", "subject", "keywords"):
c.meta[name] = self.attr.content
class pisaTagSUP(pisaTag):
def start(self, c):
c.frag.super = 1
class pisaTagSUB(pisaTag):
def start(self, c):
c.frag.sub = 1
class pisaTagA(pisaTag):
rxLink = re.compile("^(#|[a-z]+\:).*")
def start(self, c):
attr = self.attr
# XXX Also support attr.id ?
if attr.name:
# Important! Make sure that cbDefn is not inherited by other
# fragments because of a bug in Reportlab!
afrag = c.frag.clone()
# These 3 lines are needed to fix an error with non internal fonts
afrag.fontName = "Helvetica"
afrag.bold = 0
afrag.italic = 0
afrag.cbDefn = ABag(
kind="anchor",
name=attr.name,
label="anchor")
c.fragAnchor.append(afrag)
c.anchorName.append(attr.name)
if attr.href and self.rxLink.match(attr.href):
c.frag.link = attr.href
def end(self, c):
pass
class pisaTagFONT(pisaTag):
# Source: http://www.w3.org/TR/CSS21/fonts.html#propdef-font-size
def start(self, c):
if self.attr["color"] is not None:
c.frag.textColor = getColor(self.attr["color"])
if self.attr["face"] is not None:
c.frag.fontName = c.getFontName(self.attr["face"])
if self.attr["size"] is not None:
size = getSize(self.attr["size"], c.frag.fontSize, c.baseFontSize)
c.frag.fontSize = max(size, 1.0)
def end(self, c):
pass
class pisaTagP(pisaTag):
def start(self, c):
# save the type of tag; it's used in PmlBaseDoc.afterFlowable()
# to check if we need to add an outline-entry
# c.frag.tag = self.tag
if self.attr.align is not None:
c.frag.alignment = getAlign(self.attr.align)
class pisaTagDIV(pisaTagP):
pass
class pisaTagH1(pisaTagP):
pass
class pisaTagH2(pisaTagP):
pass
class pisaTagH3(pisaTagP):
pass
class pisaTagH4(pisaTagP):
pass
class pisaTagH5(pisaTagP):
pass
class pisaTagH6(pisaTagP):
pass
def listDecimal(c):
c.listCounter += 1
return six.text_type("%d." % c.listCounter)
roman_numeral_map = (
(1000, 'M'),
(900, 'CM'),
(500, 'D'),
(400, 'CD'),
(100, 'C'),
(90, 'XC'),
(50, 'L'),
(40, 'XL'),
(10, 'X'),
(9, 'IX'),
(5, 'V'),
(4, 'IV'),
(1, 'I'),
)
def int_to_roman(i):
result = []
for integer, numeral in roman_numeral_map:
count = int(i / integer)
result.append(numeral * count)
i -= integer * count
return ''.join(result)
def listUpperRoman(c):
c.listCounter += 1
roman = int_to_roman(c.listCounter)
return six.text_type("%s." % roman)
def listLowerRoman(c):
return listUpperRoman(c).lower()
def listUpperAlpha(c):
c.listCounter += 1
index = c.listCounter - 1
try:
alpha = string.ascii_uppercase[index]
except IndexError:
# needs to start over and double the character
# this will probably fail for anything past the 2nd time
alpha = string.ascii_uppercase[index - 26]
alpha *= 2
return six.text_type("%s." % alpha)
def listLowerAlpha(c):
return listUpperAlpha(c).lower()
_bullet = u"\u2022"
_list_style_type = {
"none": u"",
"disc": _bullet,
"circle": _bullet, # XXX PDF has no equivalent
"square": _bullet, # XXX PDF has no equivalent
"decimal": listDecimal,
"decimal-leading-zero": listDecimal,
"lower-roman": listLowerRoman,
"upper-roman": listUpperRoman,
"hebrew": listDecimal,
"georgian": listDecimal,
"armenian": listDecimal,
"cjk-ideographic": listDecimal,
"hiragana": listDecimal,
"katakana": listDecimal,
"hiragana-iroha": listDecimal,
"katakana-iroha": listDecimal,
"lower-latin": listDecimal,
"lower-alpha": listLowerAlpha,
"upper-latin": listDecimal,
"upper-alpha": listUpperAlpha,
"lower-greek": listDecimal,
}
class pisaTagUL(pisaTagP):
def start(self, c):
self.counter, c.listCounter = c.listCounter, 0
def end(self, c):
c.addPara()
# XXX Simulate margin for the moment
c.addStory(Spacer(width=1, height=c.fragBlock.spaceAfter))
c.listCounter = self.counter
class pisaTagOL(pisaTagUL):
pass
class pisaTagLI(pisaTag):
def start(self, c):
lst = _list_style_type.get(c.frag.listStyleType or "disc", _bullet)
frag = copy.copy(c.frag)
self.offset = 0
if frag.listStyleImage is not None:
frag.text = u""
f = frag.listStyleImage
if f and (not f.notFound()):
img = PmlImage(
f.getData(),
width=None,
height=None)
img.drawHeight *= dpi96
img.drawWidth *= dpi96
img.pisaZoom = frag.zoom
img.drawWidth *= img.pisaZoom
img.drawHeight *= img.pisaZoom
frag.image = img
self.offset = max(0, img.drawHeight - c.frag.fontSize)
else:
if type(lst) == type(u""):
frag.text = lst
else:
# XXX This should be the recent font, but it throws errors in Reportlab!
frag.text = lst(c)
# XXX This should usually be done in the context!!!
frag.fontName = frag.bulletFontName = tt2ps(frag.fontName, frag.bold, frag.italic)
c.frag.bulletText = [frag]
def end(self, c):
c.fragBlock.spaceBefore += self.offset
class pisaTagBR(pisaTag):
def start(self, c):
c.frag.lineBreak = 1
c.addFrag()
c.fragStrip = True
del c.frag.lineBreak
c.force = True
class pisaTagIMG(pisaTag):
def start(self, c):
attr = self.attr
log.debug("Parsing img tag, src: {}".format(attr.src))
log.debug("Attrs: {}".format(attr))
if attr.src and (not attr.src.notFound()):
try:
align = attr.align or c.frag.vAlign or "baseline"
width = c.frag.width
height = c.frag.height
if attr.width:
width = attr.width * dpi96
if attr.height:
height = attr.height * dpi96
img = PmlImage(
attr.src.getData(),
width=None,
height=None)
img.pisaZoom = c.frag.zoom
img.drawHeight *= dpi96
img.drawWidth *= dpi96
if (width is None) and (height is not None):
factor = getSize(height, default=img.drawHeight) / img.drawHeight
img.drawWidth *= factor
img.drawHeight = getSize(height, default=img.drawHeight)
elif (height is None) and (width is not None):
factor = getSize(width, default=img.drawWidth) / img.drawWidth
img.drawHeight *= factor
img.drawWidth = getSize(width, default=img.drawWidth)
elif (width is not None) and (height is not None):
img.drawWidth = getSize(width, default=img.drawWidth)
img.drawHeight = getSize(height, default=img.drawHeight)
img.drawWidth *= img.pisaZoom
img.drawHeight *= img.pisaZoom
img.spaceBefore = c.frag.spaceBefore
img.spaceAfter = c.frag.spaceAfter
# print "image", id(img), img.drawWidth, img.drawHeight
'''
TODO:
- Apply styles
- vspace etc.
- Borders
- Test inside tables
'''
c.force = True
if align in ["left", "right"]:
c.image = img
c.imageData = dict(
align=align
)
else:
# Important! Make sure that cbDefn is not inherited by other
# fragments because of a bug in Reportlab!
# afrag = c.frag.clone()
valign = align
if valign in ["texttop"]:
valign = "top"
elif valign in ["absmiddle"]:
valign = "middle"
elif valign in ["absbottom", "baseline"]:
valign = "bottom"
afrag = c.frag.clone()
afrag.text = ""
afrag.fontName = "Helvetica" # Fix for a nasty bug!!!
afrag.cbDefn = ABag(
kind="img",
image=img, # .getImage(), # XXX Inline?
valign=valign,
fontName="Helvetica",
fontSize=img.drawHeight,
width=img.drawWidth,
height=img.drawHeight)
c.fragList.append(afrag)
c.fontSize = img.drawHeight
except Exception: # TODO: Kill catch-all
log.warn(c.warning("Error in handling image"), exc_info=1)
else:
log.warn(c.warning("Need a valid file name!"))
class pisaTagHR(pisaTag):
def start(self, c):
c.addPara()
c.addStory(HRFlowable(
color=self.attr.color,
thickness=self.attr.size,
width=self.attr.get('width', "100%") or "100%",
spaceBefore=c.frag.spaceBefore,
spaceAfter=c.frag.spaceAfter
))
# --- Forms
if 0:
class pisaTagINPUT(pisaTag):
def _render(self, c, attr):
width = 10
height = 10
if attr.type == "text":
width = 100
height = 12
c.addStory(xhtml2pdf_reportlab.PmlInput(attr.name,
type=attr.type,
default=attr.value,
width=width,
height=height,
))
def end(self, c):
c.addPara()
attr = self.attr
if attr.name:
self._render(c, attr)
c.addPara()
class pisaTagTEXTAREA(pisaTagINPUT):
def _render(self, c, attr):
c.addStory(xhtml2pdf_reportlab.PmlInput(attr.name,
default="",
width=100,
height=100))
class pisaTagSELECT(pisaTagINPUT):
def start(self, c):
c.select_options = ["One", "Two", "Three"]
def _render(self, c, attr):
c.addStory(xhtml2pdf_reportlab.PmlInput(attr.name,
type="select",
default=c.select_options[0],
options=c.select_options,
width=100,
height=40))
c.select_options = None
class pisaTagOPTION(pisaTag):
pass
class pisaTagPDFNEXTPAGE(pisaTag):
"""
<pdf:nextpage name="" />
"""
def start(self, c):
# deprecation("pdf:nextpage")
c.addPara()
if self.attr.name:
c.addStory(NextPageTemplate(self.attr.name))
c.addStory(PageBreak())
class pisaTagPDFNEXTTEMPLATE(pisaTag):
"""
<pdf:nexttemplate name="" />
"""
def start(self, c):
# deprecation("pdf:frame")
c.addStory(NextPageTemplate(self.attr["name"]))
class pisaTagPDFNEXTFRAME(pisaTag):
"""
<pdf:nextframe name="" />
"""
def start(self, c):
c.addPara()
c.addStory(FrameBreak())
class pisaTagPDFSPACER(pisaTag):
"""
<pdf:spacer height="" />
"""
def start(self, c):
c.addPara()
c.addStory(Spacer(1, self.attr.height))
class pisaTagPDFPAGENUMBER(pisaTag):
"""
<pdf:pagenumber example="" />
"""
def start(self, c):
c.frag.pageNumber = True
c.addFrag(self.attr.example)
c.frag.pageNumber = False
class pisaTagPDFPAGECOUNT(pisaTag):
"""
<pdf:pagecount />
"""
def start(self, c):
c.frag.pageCount = True
c.addFrag()
c.frag.pageCount = False
def end(self, c):
c.addPageCount()
class pisaTagPDFTOC(pisaTag):
"""
<pdf:toc />
"""
def end(self, c):
c.multiBuild = True
c.addTOC()
class pisaTagPDFFRAME(pisaTag):
"""
<pdf:frame name="" static box="" />
"""
def start(self, c):
deprecation("pdf:frame")
attrs = self.attr
name = attrs["name"]
if name is None:
name = "frame%d" % c.UID()
x, y, w, h = attrs.box
self.frame = Frame(
x, y, w, h,
id=name,
leftPadding=0,
rightPadding=0,
bottomPadding=0,
topPadding=0,
showBoundary=attrs.border)
self.static = False
if self.attr.static:
self.static = True
c.addPara()
self.story = c.swapStory()
else:
c.frameList.append(self.frame)
def end(self, c):
if self.static:
c.addPara()
self.frame.pisaStaticStory = c.story
c.frameStaticList.append(self.frame)
c.swapStory(self.story)
class pisaTagPDFTEMPLATE(pisaTag):
"""
<pdf:template name="" static box="" >
<pdf:frame...>
</pdf:template>
"""
def start(self, c):
deprecation("pdf:template")
attrs = self.attr
#print attrs
name = attrs["name"]
c.frameList = []
c.frameStaticList = []
if name in c.templateList:
log.warn(c.warning("template '%s' has already been defined", name))
def end(self, c):
attrs = self.attr
name = attrs["name"]
if len(c.frameList) <= 0:
log.warn(c.warning("missing frame definitions for template"))
pt = PmlPageTemplate(
id=name,
frames=c.frameList,
pagesize=A4,
)
pt.pisaStaticList = c.frameStaticList
pt.pisaBackgroundList = c.pisaBackgroundList
pt.pisaBackground = self.attr.background
c.templateList[name] = pt
c.template = None
c.frameList = []
c.frameStaticList = []
class pisaTagPDFFONT(pisaTag):
"""
<pdf:fontembed name="" src="" />
"""
def start(self, c):
deprecation("pdf:font")
c.loadFont(self.attr.name, self.attr.src, self.attr.encoding)
class pisaTagPDFBARCODE(pisaTag):
_codeName = {
"I2OF5": "I2of5",
"ITF": "I2of5",
"CODE39": "Standard39",
"EXTENDEDCODE39": "Extended39",
"CODE93": "Standard93",
"EXTENDEDCODE93": "Extended93",
"MSI": "MSI",
"CODABAR": "Codabar",
"NW7": "Codabar",
"CODE11": "Code11",
"FIM": "FIM",
"POSTNET": "POSTNET",
"USPS4S": "USPS_4State",
"CODE128": "Code128",
"EAN13": "EAN13",
"EAN8": "EAN8",
"QR": "QR",
}
class _barcodeWrapper(Flowable):
"""
Wrapper for barcode widget
"""
def __init__(self, codeName="Code128", value="", **kw):
self.vertical = kw.get('vertical', 0)
self.widget = createBarcodeDrawing(codeName, value=value, **kw)
def draw(self, canvas, xoffset=0, **kw):
# NOTE: 'canvas' is mutable, so canvas.restoreState() is a MUST.
canvas.saveState()
# NOTE: checking vertical value to rotate the barcode
if self.vertical:
width, height = self.wrap(0, 0)
# Note: moving our canvas to the new origin
canvas.translate(height, -width)
canvas.rotate(90)
else:
canvas.translate(xoffset, 0)
self.widget.canv = canvas
self.widget.draw()
canvas.restoreState()
def wrap(self, aW, aH):
return self.widget.wrap(aW, aH)
def start(self, c):
attr = self.attr
codeName = attr.type or "Code128"
codeName = pisaTagPDFBARCODE._codeName[codeName.upper().replace("-", "")]
humanReadable = int(attr.humanreadable)
vertical = int(attr.vertical)
checksum = int(attr.checksum)
barWidth = attr.barwidth or 0.01 * inch
barHeight = attr.barheight or 0.5 * inch
fontName = c.getFontName("OCRB10,OCR-B,OCR B,OCRB") # or "Helvetica"
fontSize = attr.fontsize or 2.75 * mm
# Assure minimal size.
if codeName in ("EAN13", "EAN8"):
barWidth = max(barWidth, 0.264 * mm)
fontSize = max(fontSize, 2.75 * mm)
else: # Code39 etc.
barWidth = max(barWidth, 0.0075 * inch)
barcode = pisaTagPDFBARCODE._barcodeWrapper(
codeName=codeName,
value=attr.value,
barWidth=barWidth,
barHeight=barHeight,
humanReadable=humanReadable,
vertical=vertical,
checksum=checksum,
fontName=fontName,
fontSize=fontSize,
)
width, height = barcode.wrap(c.frag.width, c.frag.height)
c.force = True
valign = attr.align or c.frag.vAlign or "baseline"
if valign in ["texttop"]:
valign = "top"
elif valign in ["absmiddle"]:
valign = "middle"
elif valign in ["absbottom", "baseline"]:
valign = "bottom"
afrag = c.frag.clone()
afrag.text = ""
afrag.fontName = fontName
afrag.cbDefn = ABag(
kind="barcode",
barcode=barcode,
width=width,
height=height,
valign=valign,
)
c.fragList.append(afrag)
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