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293 lines (261 loc) · 10.1 KB
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# encoding: utf-8
"""
Paragraph-related proxy types.
"""
from __future__ import (
absolute_import, division, print_function, unicode_literals
)
from ..enum.text import WD_LINE_SPACING
from ..shared import ElementProxy, Emu, Length, Pt, Twips
class ParagraphFormat(ElementProxy):
"""
Provides access to paragraph formatting such as justification,
indentation, line spacing, space before and after, and widow/orphan
control.
"""
__slots__ = ()
@property
def alignment(self):
"""
A member of the :ref:`WdParagraphAlignment` enumeration specifying
the justification setting for this paragraph. A value of |None|
indicates paragraph alignment is inherited from the style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.jc_val
@alignment.setter
def alignment(self, value):
pPr = self._element.get_or_add_pPr()
pPr.jc_val = value
@property
def first_line_indent(self):
"""
|Length| value specifying the relative difference in indentation for
the first line of the paragraph. A positive value causes the first
line to be indented. A negative value produces a hanging indent.
|None| indicates first line indentation is inherited from the style
hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.first_line_indent
@first_line_indent.setter
def first_line_indent(self, value):
pPr = self._element.get_or_add_pPr()
pPr.first_line_indent = value
@property
def keep_together(self):
"""
|True| if the paragraph should be kept "in one piece" and not broken
across a page boundary when the document is rendered. |None|
indicates its effective value is inherited from the style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.keepLines_val
@keep_together.setter
def keep_together(self, value):
self._element.get_or_add_pPr().keepLines_val = value
@property
def keep_with_next(self):
"""
|True| if the paragraph should be kept on the same page as the
subsequent paragraph when the document is rendered. For example, this
property could be used to keep a section heading on the same page as
its first paragraph. |None| indicates its effective value is
inherited from the style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.keepNext_val
@keep_with_next.setter
def keep_with_next(self, value):
self._element.get_or_add_pPr().keepNext_val = value
@property
def left_indent(self):
"""
|Length| value specifying the space between the left margin and the
left side of the paragraph. |None| indicates the left indent value is
inherited from the style hierarchy. Use an |Inches| value object as
a convenient way to apply indentation in units of inches.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.ind_left
@left_indent.setter
def left_indent(self, value):
pPr = self._element.get_or_add_pPr()
pPr.ind_left = value
@property
def line_spacing(self):
"""
|float| or |Length| value specifying the space between baselines in
successive lines of the paragraph. A value of |None| indicates line
spacing is inherited from the style hierarchy. A float value, e.g.
``2.0`` or ``1.75``, indicates spacing is applied in multiples of
line heights. A |Length| value such as ``Pt(12)`` indicates spacing
is a fixed height. The |Pt| value class is a convenient way to apply
line spacing in units of points. Assigning |None| resets line spacing
to inherit from the style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return self._line_spacing(pPr.spacing_line, pPr.spacing_lineRule)
@line_spacing.setter
def line_spacing(self, value):
pPr = self._element.get_or_add_pPr()
if value is None:
pPr.spacing_line = None
pPr.spacing_lineRule = None
elif isinstance(value, Length):
pPr.spacing_line = value
if pPr.spacing_lineRule != WD_LINE_SPACING.AT_LEAST:
pPr.spacing_lineRule = WD_LINE_SPACING.EXACTLY
else:
pPr.spacing_line = Emu(value * Twips(240))
pPr.spacing_lineRule = WD_LINE_SPACING.MULTIPLE
@property
def line_spacing_rule(self):
"""
A member of the :ref:`WdLineSpacing` enumeration indicating how the
value of :attr:`line_spacing` should be interpreted. Assigning any of
the :ref:`WdLineSpacing` members :attr:`SINGLE`, :attr:`DOUBLE`, or
:attr:`ONE_POINT_FIVE` will cause the value of :attr:`line_spacing`
to be updated to produce the corresponding line spacing.
"""
pPr = self._element.pPr
if pPr is None:
return None
return self._line_spacing_rule(
pPr.spacing_line, pPr.spacing_lineRule
)
@line_spacing_rule.setter
def line_spacing_rule(self, value):
pPr = self._element.get_or_add_pPr()
if value == WD_LINE_SPACING.SINGLE:
pPr.spacing_line = Twips(240)
pPr.spacing_lineRule = WD_LINE_SPACING.MULTIPLE
elif value == WD_LINE_SPACING.ONE_POINT_FIVE:
pPr.spacing_line = Twips(360)
pPr.spacing_lineRule = WD_LINE_SPACING.MULTIPLE
elif value == WD_LINE_SPACING.DOUBLE:
pPr.spacing_line = Twips(480)
pPr.spacing_lineRule = WD_LINE_SPACING.MULTIPLE
else:
pPr.spacing_lineRule = value
@property
def page_break_before(self):
"""
|True| if the paragraph should appear at the top of the page
following the prior paragraph. |None| indicates its effective value
is inherited from the style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.pageBreakBefore_val
@page_break_before.setter
def page_break_before(self, value):
self._element.get_or_add_pPr().pageBreakBefore_val = value
@property
def right_indent(self):
"""
|Length| value specifying the space between the right margin and the
right side of the paragraph. |None| indicates the right indent value
is inherited from the style hierarchy. Use a |Cm| value object as
a convenient way to apply indentation in units of centimeters.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.ind_right
@right_indent.setter
def right_indent(self, value):
pPr = self._element.get_or_add_pPr()
pPr.ind_right = value
@property
def space_after(self):
"""
|Length| value specifying the spacing to appear between this
paragraph and the subsequent paragraph. |None| indicates this value
is inherited from the style hierarchy. |Length| objects provide
convenience properties, such as :attr:`~.Length.pt` and
:attr:`~.Length.inches`, that allow easy conversion to various length
units.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.spacing_after
@space_after.setter
def space_after(self, value):
self._element.get_or_add_pPr().spacing_after = value
@property
def space_before(self):
"""
|Length| value specifying the spacing to appear between this
paragraph and the prior paragraph. |None| indicates this value is
inherited from the style hierarchy. |Length| objects provide
convenience properties, such as :attr:`~.Length.pt` and
:attr:`~.Length.cm`, that allow easy conversion to various length
units.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.spacing_before
@space_before.setter
def space_before(self, value):
self._element.get_or_add_pPr().spacing_before = value
@property
def widow_control(self):
"""
|True| if the first and last lines in the paragraph remain on the
same page as the rest of the paragraph when Word repaginates the
document. |None| indicates its effective value is inherited from the
style hierarchy.
"""
pPr = self._element.pPr
if pPr is None:
return None
return pPr.widowControl_val
@widow_control.setter
def widow_control(self, value):
self._element.get_or_add_pPr().widowControl_val = value
@staticmethod
def _line_spacing(spacing_line, spacing_lineRule):
"""
Return the line spacing value calculated from the combination of
*spacing_line* and *spacing_lineRule*. Returns a |float| number of
lines when *spacing_lineRule* is ``WD_LINE_SPACING.MULTIPLE``,
otherwise a |Length| object of absolute line height is returned.
Returns |None| when *spacing_line* is |None|.
"""
if spacing_line is None:
return None
if spacing_lineRule == WD_LINE_SPACING.MULTIPLE:
return spacing_line / Pt(12)
return spacing_line
@staticmethod
def _line_spacing_rule(line, lineRule):
"""
Return the line spacing rule value calculated from the combination of
*line* and *lineRule*. Returns special members of the
:ref:`WdLineSpacing` enumeration when line spacing is single, double,
or 1.5 lines.
"""
if lineRule == WD_LINE_SPACING.MULTIPLE:
if line == Twips(240):
return WD_LINE_SPACING.SINGLE
if line == Twips(360):
return WD_LINE_SPACING.ONE_POINT_FIVE
if line == Twips(480):
return WD_LINE_SPACING.DOUBLE
return lineRule