227004 - A <col>'s width should not include a table's cellpadding

Status: RESOLVED INVALID

(Core :: Layout: Tables, defect)

Description

[Gérard Talbot]

When rendering a table, the col width should not include the table cellpadding
value.

Comment 1

[Gérard Talbot]

Attachment: Self-explanatory testcase

<table cellspacing="0" cellpadding="16" border="2" rules="none" id="idTable">
<col width="100"><col width="200"><col width="300">
<tr><td style="background-color:red;">1st cell</td>
<td style="background-color:green;">2nd cell</td>
<td style="background-color:blue;">3rd cell</td></tr>
</table>

should generate a 700px (expected results) wide table rather than a 600px
(actual results) wide table.

Comment 2

[Bernd]

from css21

On top of the column groups are the areas representing the column boxes. Each
column is as tall as the column groups and as wide as a normal
(single-column-spanning) cell in the column. The background extends to cover the
full area of all cells that originate in the column, even if they span outside
the column, but this extension does not affect background image positioning.

I think we are doing the right thing.

Comment 3

[Boris Zbarsky [:bzbarsky]]

"cellpadding" is just padding on the cells; the question is what a "column
width" is in CSS....

Comment 4

[Bernd]

fantasai: Could you please shed some light on the issue? (Didn't you write that
? :-))

Comment 5

[Bernd]

To make it explicit: I am opposed to exclude the cells border and padding.
First every cell can have a different padding/border. Second the cell does not
inherit the width from the column. It just filles the space provided by the
column. If the content width of the cell would be the column width the columns
would need to leave a larger space between them (borderpadding).

Comment 6

[fantasai]

Yes I did. :) You're right, the cell border and padding should be *within* the
column as you say--and since the cellpadding attribute translates to CSS
'padding' on the table's cells, the same applies to that.

See the diagram at http://www.w3.org/TR/CSS2/tables.html#separated-borders

Marking INVALID

Comment 7

[Hixie (not reading bugmail)]

If you think the spec is vague on this, or could do with clarifying, please send 
me an e-mail very soon (like, today).