[xep-support] XEP 3.8: Background color in table cell

[Werner Donné]

Thank you very much Nikolai,

Best regards,

Werner.

Nikolai Grigoriev wrote:
> Werner,
> 
> 
>>The attached sample produces a result for which I have no explanation.
>>It is a table with two columns and three rows. The middle row has the
>>background-color set. This has the effect that a small portion of the
>>cell borders is taken away. This is odd because the background is painted
>>in the padding rectangle.
> 
> 
> It looks more like a pixel rounding effect in Acrobat. If you zoom 
> the PDF in, the effect seemingly diappears. Your file also prints OK. 
> So my impression is that the background rectangle is correctly sized.
> 
> I admit however that the Z-order can be made a bit more friendly: one 
> should draw all backgrounds first, and all borders afterwards, so that 
> a background could not overlap the border of another cell. Thank you 
> for the input; we will consider this as a request for improvement.
> 
> If your file is for the print, you need not care: the effect only happens
> on the screen. If you are building an electronic document, then  
> a simple workaround for XEP 3.8 is to specify a uniform border 
> on every cell. That is, if you restyle the table this way, it would 
> produce the same visual effect without the overlap problems:
> 
> <fo:table border-collapse="separate" 
>           table-layout="fixed" 
>           border="0.1pt solid black">
>     <fo:table-body>
>         <fo:table-row>
>             <fo:table-cell border="0.1pt solid black"> ....
>             <fo:table-cell border="0.1pt solid black"> ....
>         </fo:table-row>
>         <fo:table-row background-color="rgb(221, 221, 221)">
>             <fo:table-cell border="0.1pt solid black"> ....
>             <fo:table-cell border="0.1pt solid black"> ....
>         </fo:table-row>
>         <fo:table-row>
>             <fo:table-cell border="0.1pt solid black"> ....
>             <fo:table-cell border="0.1pt solid black"> ....
>         </fo:table-row>
>     </fo:table-body>
> </fo:table>
> 
> Here, each cell has its own border, that is guaranteed to be drawn 
> on top of the respective background. This prevents backgrounds from 
> creeping into nearby cells.
> 
> Regards,
> Nikolai Grigoriev
> RenderX
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-- 
Werner Donné  --  Re BVBA
Engelbeekstraat 8
B-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne at re.be

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