# encoding: utf-8
"""Table-related objects such as Table and Cell."""
from pptx.compat import is_integer
from pptx.dml.fill import FillFormat
from pptx.oxml.table import TcRange
from pptx.shapes import Subshape
from pptx.text.text import TextFrame
from pptx.util import lazyproperty
[文档]class Table(object):
"""A DrawingML table object.
Not intended to be constructed directly, use
:meth:`.Slide.shapes.add_table` to add a table to a slide.
"""
def __init__(self, tbl, graphic_frame):
super(Table, self).__init__()
self._tbl = tbl
self._graphic_frame = graphic_frame
[文档] def cell(self, row_idx, col_idx):
"""Return cell at *row_idx*, *col_idx*.
Return value is an instance of |_Cell|. *row_idx* and *col_idx* are
zero-based, e.g. cell(0, 0) is the top, left cell in the table.
"""
return _Cell(self._tbl.tc(row_idx, col_idx), self)
[文档] @lazyproperty
def columns(self):
"""|_ColumnCollection| instance for this table.
Provides access to |_Column| objects representing the table's columns. |_Column|
objects are accessed using list notation, e.g. ``col = tbl.columns[0]``.
"""
return _ColumnCollection(self._tbl, self)
@property
def first_col(self):
"""
Read/write boolean property which, when true, indicates the first
column should be formatted differently, as for a side-heading column
at the far left of the table.
"""
return self._tbl.firstCol
@first_col.setter
def first_col(self, value):
self._tbl.firstCol = value
@property
def first_row(self):
"""
Read/write boolean property which, when true, indicates the first
row should be formatted differently, e.g. for column headings.
"""
return self._tbl.firstRow
@first_row.setter
def first_row(self, value):
self._tbl.firstRow = value
@property
def horz_banding(self):
"""
Read/write boolean property which, when true, indicates the rows of
the table should appear with alternating shading.
"""
return self._tbl.bandRow
@horz_banding.setter
def horz_banding(self, value):
self._tbl.bandRow = value
[文档] def iter_cells(self):
"""Generate _Cell object for each cell in this table.
Each grid cell is generated in left-to-right, top-to-bottom order.
"""
return (_Cell(tc, self) for tc in self._tbl.iter_tcs())
@property
def last_col(self):
"""
Read/write boolean property which, when true, indicates the last
column should be formatted differently, as for a row totals column at
the far right of the table.
"""
return self._tbl.lastCol
@last_col.setter
def last_col(self, value):
self._tbl.lastCol = value
@property
def last_row(self):
"""
Read/write boolean property which, when true, indicates the last
row should be formatted differently, as for a totals row at the
bottom of the table.
"""
return self._tbl.lastRow
@last_row.setter
def last_row(self, value):
self._tbl.lastRow = value
def notify_height_changed(self):
"""
Called by a row when its height changes, triggering the graphic frame
to recalculate its total height (as the sum of the row heights).
"""
new_table_height = sum([row.height for row in self.rows])
self._graphic_frame.height = new_table_height
def notify_width_changed(self):
"""
Called by a column when its width changes, triggering the graphic
frame to recalculate its total width (as the sum of the column
widths).
"""
new_table_width = sum([col.width for col in self.columns])
self._graphic_frame.width = new_table_width
@property
def part(self):
"""
The package part containing this table.
"""
return self._graphic_frame.part
[文档] @lazyproperty
def rows(self):
"""|_RowCollection| instance for this table.
Provides access to |_Row| objects representing the table's rows. |_Row| objects
are accessed using list notation, e.g. ``col = tbl.rows[0]``.
"""
return _RowCollection(self._tbl, self)
@property
def vert_banding(self):
"""
Read/write boolean property which, when true, indicates the columns
of the table should appear with alternating shading.
"""
return self._tbl.bandCol
@vert_banding.setter
def vert_banding(self, value):
self._tbl.bandCol = value
[文档]class _Cell(Subshape):
"""Table cell"""
def __init__(self, tc, parent):
super(_Cell, self).__init__(parent)
self._tc = tc
def __eq__(self, other):
"""|True| if this object proxies the same element as *other*.
Equality for proxy objects is defined as referring to the same XML
element, whether or not they are the same proxy object instance.
"""
if not isinstance(other, type(self)):
return False
return self._tc is other._tc
def __ne__(self, other):
if not isinstance(other, type(self)):
return True
return self._tc is not other._tc
[文档] @lazyproperty
def fill(self):
"""
|FillFormat| instance for this cell, providing access to fill
properties such as foreground color.
"""
tcPr = self._tc.get_or_add_tcPr()
return FillFormat.from_fill_parent(tcPr)
@property
def is_merge_origin(self):
"""True if this cell is the top-left grid cell in a merged cell."""
return self._tc.is_merge_origin
@property
def is_spanned(self):
"""True if this cell is spanned by a merge-origin cell.
A merge-origin cell "spans" the other grid cells in its merge range,
consuming their area and "shadowing" the spanned grid cells.
Note this value is |False| for a merge-origin cell. A merge-origin
cell spans other grid cells, but is not itself a spanned cell.
"""
return self._tc.is_spanned
@property
def margin_left(self):
"""
Read/write integer value of left margin of cell as a |Length| value
object. If assigned |None|, the default value is used, 0.1 inches for
left and right margins and 0.05 inches for top and bottom.
"""
return self._tc.marL
@margin_left.setter
def margin_left(self, margin_left):
self._validate_margin_value(margin_left)
self._tc.marL = margin_left
@property
def margin_right(self):
"""
Right margin of cell.
"""
return self._tc.marR
@margin_right.setter
def margin_right(self, margin_right):
self._validate_margin_value(margin_right)
self._tc.marR = margin_right
@property
def margin_top(self):
"""
Top margin of cell.
"""
return self._tc.marT
@margin_top.setter
def margin_top(self, margin_top):
self._validate_margin_value(margin_top)
self._tc.marT = margin_top
@property
def margin_bottom(self):
"""
Bottom margin of cell.
"""
return self._tc.marB
@margin_bottom.setter
def margin_bottom(self, margin_bottom):
self._validate_margin_value(margin_bottom)
self._tc.marB = margin_bottom
[文档] def merge(self, other_cell):
"""Create merged cell from this cell to *other_cell*.
This cell and *other_cell* specify opposite corners of the merged
cell range. Either diagonal of the cell region may be specified in
either order, e.g. self=bottom-right, other_cell=top-left, etc.
Raises |ValueError| if the specified range already contains merged
cells anywhere within its extents or if *other_cell* is not in the
same table as *self*.
"""
tc_range = TcRange(self._tc, other_cell._tc)
if not tc_range.in_same_table:
raise ValueError("other_cell from different table")
if tc_range.contains_merged_cell:
raise ValueError("range contains one or more merged cells")
tc_range.move_content_to_origin()
row_count, col_count = tc_range.dimensions
for tc in tc_range.iter_top_row_tcs():
tc.rowSpan = row_count
for tc in tc_range.iter_left_col_tcs():
tc.gridSpan = col_count
for tc in tc_range.iter_except_left_col_tcs():
tc.hMerge = True
for tc in tc_range.iter_except_top_row_tcs():
tc.vMerge = True
@property
def span_height(self):
"""int count of rows spanned by this cell.
The value of this property may be misleading (often 1) on cells where
`.is_merge_origin` is not |True|, since only a merge-origin cell
contains complete span information. This property is only intended
for use on cells known to be a merge origin by testing
`.is_merge_origin`.
"""
return self._tc.rowSpan
@property
def span_width(self):
"""int count of columns spanned by this cell.
The value of this property may be misleading (often 1) on cells where
`.is_merge_origin` is not |True|, since only a merge-origin cell
contains complete span information. This property is only intended
for use on cells known to be a merge origin by testing
`.is_merge_origin`.
"""
return self._tc.gridSpan
[文档] def split(self):
"""Remove merge from this (merge-origin) cell.
The merged cell represented by this object will be "unmerged",
yielding a separate unmerged cell for each grid cell previously
spanned by this merge.
Raises |ValueError| when this cell is not a merge-origin cell. Test
with `.is_merge_origin` before calling.
"""
if not self.is_merge_origin:
raise ValueError(
"not a merge-origin cell; only a merge-origin cell can be sp" "lit"
)
tc_range = TcRange.from_merge_origin(self._tc)
for tc in tc_range.iter_tcs():
tc.rowSpan = tc.gridSpan = 1
tc.hMerge = tc.vMerge = False
@property
def text(self):
"""Unicode (str in Python 3) representation of cell contents.
The returned string will contain a newline character (``"\\n"``) separating each
paragraph and a vertical-tab (``"\\v"``) character for each line break (soft
carriage return) in the cell's text.
Assignment to *text* replaces all text currently contained in the cell. A
newline character (``"\\n"``) in the assigned text causes a new paragraph to be
started. A vertical-tab (``"\\v"``) character in the assigned text causes
a line-break (soft carriage-return) to be inserted. (The vertical-tab character
appears in clipboard text copied from PowerPoint as its encoding of
line-breaks.)
Either bytes (Python 2 str) or unicode (Python 3 str) can be assigned. Bytes can
be 7-bit ASCII or UTF-8 encoded 8-bit bytes. Bytes values are converted to
unicode assuming UTF-8 encoding (which correctly decodes ASCII).
"""
return self.text_frame.text
@text.setter
def text(self, text):
self.text_frame.text = text
@property
def text_frame(self):
"""
|TextFrame| instance containing the text that appears in the cell.
"""
txBody = self._tc.get_or_add_txBody()
return TextFrame(txBody, self)
@property
def vertical_anchor(self):
"""Vertical alignment of this cell.
This value is a member of the :ref:`MsoVerticalAnchor` enumeration or
|None|. A value of |None| indicates the cell has no explicitly
applied vertical anchor setting and its effective value is inherited
from its style-hierarchy ancestors.
Assigning |None| to this property causes any explicitly applied
vertical anchor setting to be cleared and inheritance of its
effective value to be restored.
"""
return self._tc.anchor
@vertical_anchor.setter
def vertical_anchor(self, mso_anchor_idx):
self._tc.anchor = mso_anchor_idx
@staticmethod
def _validate_margin_value(margin_value):
"""
Raise ValueError if *margin_value* is not a positive integer value or
|None|.
"""
if not is_integer(margin_value) and margin_value is not None:
tmpl = "margin value must be integer or None, got '%s'"
raise TypeError(tmpl % margin_value)
[文档]class _Column(Subshape):
"""Table column"""
def __init__(self, gridCol, parent):
super(_Column, self).__init__(parent)
self._gridCol = gridCol
@property
def width(self):
"""
Width of column in EMU.
"""
return self._gridCol.w
@width.setter
def width(self, width):
self._gridCol.w = width
self._parent.notify_width_changed()
[文档]class _Row(Subshape):
"""Table row"""
def __init__(self, tr, parent):
super(_Row, self).__init__(parent)
self._tr = tr
@property
def cells(self):
"""
Read-only reference to collection of cells in row. An individual cell
is referenced using list notation, e.g. ``cell = row.cells[0]``.
"""
return _CellCollection(self._tr, self)
@property
def height(self):
"""
Height of row in EMU.
"""
return self._tr.h
@height.setter
def height(self, height):
self._tr.h = height
self._parent.notify_height_changed()
class _CellCollection(Subshape):
"""Horizontal sequence of row cells"""
def __init__(self, tr, parent):
super(_CellCollection, self).__init__(parent)
self._tr = tr
def __getitem__(self, idx):
"""Provides indexed access, (e.g. 'cells[0]')."""
if idx < 0 or idx >= len(self._tr.tc_lst):
msg = "cell index [%d] out of range" % idx
raise IndexError(msg)
return _Cell(self._tr.tc_lst[idx], self)
def __iter__(self):
"""Provides iterability."""
return (_Cell(tc, self) for tc in self._tr.tc_lst)
def __len__(self):
"""Supports len() function (e.g. 'len(cells) == 1')."""
return len(self._tr.tc_lst)
class _ColumnCollection(Subshape):
"""Sequence of table columns."""
def __init__(self, tbl, parent):
super(_ColumnCollection, self).__init__(parent)
self._tbl = tbl
def __getitem__(self, idx):
"""
Provides indexed access, (e.g. 'columns[0]').
"""
if idx < 0 or idx >= len(self._tbl.tblGrid.gridCol_lst):
msg = "column index [%d] out of range" % idx
raise IndexError(msg)
return _Column(self._tbl.tblGrid.gridCol_lst[idx], self)
def __len__(self):
"""
Supports len() function (e.g. 'len(columns) == 1').
"""
return len(self._tbl.tblGrid.gridCol_lst)
def notify_width_changed(self):
"""
Called by a column when its width changes. Pass along to parent.
"""
self._parent.notify_width_changed()
class _RowCollection(Subshape):
"""Sequence of table rows"""
def __init__(self, tbl, parent):
super(_RowCollection, self).__init__(parent)
self._tbl = tbl
def __getitem__(self, idx):
"""
Provides indexed access, (e.g. 'rows[0]').
"""
if idx < 0 or idx >= len(self):
msg = "row index [%d] out of range" % idx
raise IndexError(msg)
return _Row(self._tbl.tr_lst[idx], self)
def __len__(self):
"""
Supports len() function (e.g. 'len(rows) == 1').
"""
return len(self._tbl.tr_lst)
def notify_height_changed(self):
"""
Called by a row when its height changes. Pass along to parent.
"""
self._parent.notify_height_changed()