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"""
Helper for complex CSS definitions like font, margin, padding and border
Optimized for use with PISA.
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.
"""
# ruff: noqa: N802, N803, N815, N816, N999
import logging
from xhtml2pdf.util import toList
log = logging.getLogger(__name__)
_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 totally 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,
}
def getNextPart(parts):
return parts.pop(0) if parts else None
def isSize(value):
return value and (isinstance(value, tuple) 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.warning("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, cast_tuple=False)
# 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.extend(
(("font-size", fontSize, last), ("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 around
part = getNextPart(parts) or oparts
if part:
if isinstance(part, str) and (("." 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()!
# TODO: We should definitely outsource the "if len() ==" part into a separate function!
# Because we're repeating the same if-elif-else statement for MARGIN, PADDING,
# BORDER-WIDTH, BORDER-COLOR and BORDER-STYLE. That's pretty messy. (fbernhart)
# 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.extend(
(
("margin-left", left, last),
("margin-right", right, last),
("margin-top", top, last),
("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.extend(
(
("padding-left", left, last),
("padding-right", right, last),
("padding-top", top, last),
("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.extend(
(
("border-left-width", left, last),
("border-right-width", right, last),
("border-top-width", top, last),
("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.extend(
(
("border-left-color", left, last),
("border-right-color", right, last),
("border-top-color", top, last),
("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.extend(
(
("border-left-style", left, last),
("border-right-style", right, last),
("border-top-style", top, last),
("border-bottom-style", bottom, last),
)
)
# BORDER
elif name == "border":
width, style, color = splitBorder(parts)
if width is not None:
dd.extend(
(
("border-left-width", width, last),
("border-right-width", width, last),
("border-top-width", width, last),
("border-bottom-width", width, last),
)
)
if style is not None:
dd.extend(
(
("border-left-style", style, last),
("border-right-style", style, last),
("border-top-style", style, last),
("border-bottom-style", style, last),
)
)
if color is not None:
dd.extend(
(
("border-left-color", color, last),
("border-right-color", color, last),
("border-top-color", color, last),
("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