/usr/lib/python3/dist-packages/xhtml2pdf/w3c/cssSpecial.py is in python3-xhtml2pdf 0.2.1-1.
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# 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.
# 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.
__reversion__ = "$Revision: 20 $"
__author__ = "$Author: holtwick $"
__date__ = "$Date: 2007-10-09 12:58:24 +0200 (Di, 09 Okt 2007) $"
"""
Helper for complex CSS definitons like font, margin, padding and border
Optimized for use with PISA
"""
#support python 3
#import types
TupleType = tuple
ListType = list
import logging
log = logging.getLogger("ho.css")
def toList(value):
if type(value) != ListType:
return [value]
return value
_styleTable = {
"normal": "",
"italic": "",
"oblique": "",
}
_variantTable = {
"normal": None,
"small-caps": None,
}
_weightTable = {
"light": 300,
"lighter": 300, # fake relativness for now
"normal": 400,
"bold": 700,
"bolder": 700, # fake relativness for now
"100": 100,
"200": 200,
"300": 300,
"400": 400,
"500": 500,
"600": 600,
"700": 700,
"800": 800,
"900": 900,
#wx.LIGHT: 300,
#wx.NORMAL: 400,
#wx.BOLD: 700,
}
#_absSizeTable = {
# "xx-small" : 3./5.,
# "x-small": 3./4.,
# "small": 8./9.,
# "medium": 1./1.,
# "large": 6./5.,
# "x-large": 3./2.,
# "xx-large": 2./1.,
# "xxx-large": 3./1.,
# "larger": 1.25, # XXX Not totaly CSS conform:
# "smaller": 0.75, # http://www.w3.org/TR/CSS21/fonts.html#propdef-font-size
# }
_borderStyleTable = {
"none": 0,
"hidden": 0,
"dotted": 1,
"dashed": 1,
"solid": 1,
"double": 1,
"groove": 1,
"ridge": 1,
"inset": 1,
"outset": 1,
}
'''
_relSizeTable = {
'pt':
# pt: absolute point size
# Note: this is 1/72th of an inch
(lambda value, pt: value),
'px':
# px: pixels, relative to the viewing device
# Note: approximate at the size of a pt
(lambda value, pt: value),
'ex':
# ex: proportional to the 'x-height' of the parent font
# Note: can't seem to dervie this value from wx.Font methods,
# so we'll approximate by calling it 1/2 a pt
(lambda value, pt: 2 * value),
'pc':
# pc: 12:1 pica:point size
# Note: this is 1/6th of an inch
(lambda value, pt: 12*value),
'in':
# in: 72 inches per point
(lambda value, pt: 72*value),
'cm':
# in: 72 inches per point, 2.54 cm per inch
(lambda value, pt,_r=72./2.54: _r*value),
'mm':
# in: 72 inches per point, 25.4 mm per inch
(lambda value, pt,_r=72./25.4: _r*value),
'%':
# %: percentage of the parent's pointSize
(lambda value, pt: 0.01 * pt * value),
'em':
# em: proportional to the 'font-size' of the parent font
(lambda value, pt: pt * value),
}
'''
def getNextPart(parts):
if parts:
part = parts.pop(0)
else:
part = None
return part
def isSize(value):
return value and ((type(value) is TupleType) or value == "0")
def splitBorder(parts):
"""
The order of the elements seems to be of no importance:
http://www.w3.org/TR/CSS21/box.html#border-shorthand-properties
"""
width = style = color = None
if len(parts) > 3:
log.warn("To many elements for border style %r", parts)
for part in parts:
# Width
if isSize(part):
width = part
# Style
elif hasattr(part, 'lower') and part.lower() in _borderStyleTable:
style = part
# Color
else:
color = part
# log.debug("Border styles: %r -> %r ", copy_parts, (width, style, color))
return (width, style, color)
def parseSpecialRules(declarations, debug=0):
# print selectors, declarations
# CSS MODIFY!
dd = []
for d in declarations:
if debug:
log.debug("CSS special IN: %r", d)
name, parts, last = d
oparts = parts
parts = toList(parts)
# FONT
if name == "font":
# [ [ <'font-style'> || <'font-variant'> || <'font-weight'> ]? <'font-size'> [ / <'line-height'> ]? <'font-family'> ] | inherit
part = getNextPart(parts)
# Style
if part and part in _styleTable:
dd.append(("font-style", part, last))
part = getNextPart(parts)
# Variant
if part and part in _variantTable:
dd.append(("font-variant", part, last))
part = getNextPart(parts)
# Weight
if part and part in _weightTable:
dd.append(("font-weight", part, last))
part = getNextPart(parts)
# Size and Line Height
if isinstance(part, tuple) and len(part) == 3:
fontSize, slash, lineHeight = part
assert slash == '/'
dd.append(("font-size", fontSize, last))
dd.append(("line-height", lineHeight, last))
else:
dd.append(("font-size", part, last))
# Face/ Family
dd.append(("font-face", parts, last))
# BACKGROUND
elif name == "background":
# [<'background-color'> || <'background-image'> || <'background-repeat'> || <'background-attachment'> || <'background-position'>] | inherit
# XXX We do not receive url() and parts list, so we go for a dirty work arround
part = getNextPart(parts) or oparts
if part:
if hasattr(part, '__iter__') and (type("." in part) or ("data:" in part)):
dd.append(("background-image", part, last))
else:
dd.append(("background-color", part, last))
if 0:
part = getNextPart(parts) or oparts
print ("~", part, parts, oparts, declarations)
# Color
if part and (not part.startswith("url")):
dd.append(("background-color", part, last))
part = getNextPart(parts)
# Background
if part:
dd.append(("background-image", part, last))
# XXX Incomplete! Error in url()!
# MARGIN
elif name == "margin":
if len(parts) == 1:
top = bottom = left = right = parts[0]
elif len(parts) == 2:
top = bottom = parts[0]
left = right = parts[1]
elif len(parts) == 3:
top = parts[0]
left = right = parts[1]
bottom = parts[2]
elif len(parts) == 4:
top = parts[0]
right = parts[1]
bottom = parts[2]
left = parts[3]
else:
continue
dd.append(("margin-left", left, last))
dd.append(("margin-right", right, last))
dd.append(("margin-top", top, last))
dd.append(("margin-bottom", bottom, last))
# PADDING
elif name == "padding":
if len(parts) == 1:
top = bottom = left = right = parts[0]
elif len(parts) == 2:
top = bottom = parts[0]
left = right = parts[1]
elif len(parts) == 3:
top = parts[0]
left = right = parts[1]
bottom = parts[2]
elif len(parts) == 4:
top = parts[0]
right = parts[1]
bottom = parts[2]
left = parts[3]
else:
continue
dd.append(("padding-left", left, last))
dd.append(("padding-right", right, last))
dd.append(("padding-top", top, last))
dd.append(("padding-bottom", bottom, last))
# BORDER WIDTH
elif name == "border-width":
if len(parts) == 1:
top = bottom = left = right = parts[0]
elif len(parts) == 2:
top = bottom = parts[0]
left = right = parts[1]
elif len(parts) == 3:
top = parts[0]
left = right = parts[1]
bottom = parts[2]
elif len(parts) == 4:
top = parts[0]
right = parts[1]
bottom = parts[2]
left = parts[3]
else:
continue
dd.append(("border-left-width", left, last))
dd.append(("border-right-width", right, last))
dd.append(("border-top-width", top, last))
dd.append(("border-bottom-width", bottom, last))
# BORDER COLOR
elif name == "border-color":
if len(parts) == 1:
top = bottom = left = right = parts[0]
elif len(parts) == 2:
top = bottom = parts[0]
left = right = parts[1]
elif len(parts) == 3:
top = parts[0]
left = right = parts[1]
bottom = parts[2]
elif len(parts) == 4:
top = parts[0]
right = parts[1]
bottom = parts[2]
left = parts[3]
else:
continue
dd.append(("border-left-color", left, last))
dd.append(("border-right-color", right, last))
dd.append(("border-top-color", top, last))
dd.append(("border-bottom-color", bottom, last))
# BORDER STYLE
elif name == "border-style":
if len(parts) == 1:
top = bottom = left = right = parts[0]
elif len(parts) == 2:
top = bottom = parts[0]
left = right = parts[1]
elif len(parts) == 3:
top = parts[0]
left = right = parts[1]
bottom = parts[2]
elif len(parts) == 4:
top = parts[0]
right = parts[1]
bottom = parts[2]
left = parts[3]
else:
continue
dd.append(("border-left-style", left, last))
dd.append(("border-right-style", right, last))
dd.append(("border-top-style", top, last))
dd.append(("border-bottom-style", bottom, last))
# BORDER
elif name == "border":
width, style, color = splitBorder(parts)
if width is not None:
dd.append(("border-left-width", width, last))
dd.append(("border-right-width", width, last))
dd.append(("border-top-width", width, last))
dd.append(("border-bottom-width", width, last))
if style is not None:
dd.append(("border-left-style", style, last))
dd.append(("border-right-style", style, last))
dd.append(("border-top-style", style, last))
dd.append(("border-bottom-style", style, last))
if color is not None:
dd.append(("border-left-color", color, last))
dd.append(("border-right-color", color, last))
dd.append(("border-top-color", color, last))
dd.append(("border-bottom-color", color, last))
# BORDER TOP, BOTTOM, LEFT, RIGHT
elif name in ("border-top", "border-bottom", "border-left", "border-right"):
direction = name[7:]
width, style, color = splitBorder(parts)
# print direction, width
if width is not None:
dd.append(("border-" + direction + "-width", width, last))
if style is not None:
dd.append(("border-" + direction + "-style", style, last))
if color is not None:
dd.append(("border-" + direction + "-color", color, last))
# REST
else:
dd.append(d)
if debug and dd:
log.debug("CSS special OUT:\n%s", "\n".join([repr(d) for d in dd]))
if 0: #declarations!=dd:
print ("###", declarations)
print ("#->", dd)
# CSS MODIFY! END
return dd
#import re
#_rxhttp = re.compile(r"url\([\'\"]?http\:\/\/[^\/]", re.IGNORECASE|re.DOTALL)
def cleanupCSS(src):
# src = _rxhttp.sub('url(', src)
return src
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