Re: [office] Compare applications in regard to tab, margin, border and padding

[Regina Henschel <regina.henschel@libreoffice.org>]

Hi all,

I have got an assumption about the different behavior:

1. Word, TextMaker, and Calligra calculate the tab-stop from the start 
edge of the paragraph content area. LibreOffice calculates from the 
inner edge of the area defined by the fo:margin attribute.

2. Calligra and LibreOffice build the paragraph content area according 
the CSS box-model. TextMaker and Word build it only from the fo:margin 
attribute. I consider this a bug in TextMaker and Word.

3. The style of the second paragraph is a child of the style of the 
first paragraph. It sets a new fo:margin attribute, but inherits the 
<style:tab-stops> element. Word uses the calculated value of the 
tab-stop for this inheritance. TextMaker, Calligra, and LibreOffice 
inherit the attribute description and calculate the value newly in the 
child paragraph style. Does a general rule exists, whether calculated 
values are inherit?

Kind regards
Regina

Regina Henschel schrieb am 14.03.2018 um 17:36:
> Hi all,
>
> attached is the original file and a file, which contains screenshots
> from LibreOffice, TextMaker, Word, and Calligra (from top to bottom).
>
> The test file has a page layout with two columns. The paragraphs, which
> I have tested, have border 6pt and padding 31pt (the largest values Word
> is able to use) and a tab-stop at 3.51cm. The paragraph margin of the
> upper paragraph is 0.5cm, from the lower paragraph is -0.5cm. The
> paragraphs between have standard style, which means no margin, border,
> or padding.
>
> The screenshots are aligned to the left edge of the column content area,
> indicated by the blue line. The standard paragraphs start at this line.
> I have enabled a 5mm grid in all applications, which hopefully makes
> comparison easier.
>
> You will notice:
> Word has tab-stops absolute. But I have no clue, why it is at this
> position. All others have relative tab-stops.
>
> LibreOffice relates the tab-stop to the right edge of the area build
> from the fo:margin-left attribute.
> Calligra and TextMaker relate the tab-stop to the left edge of the
> paragraph content area (= area where the text begins).
>
> Does there exist a definition in XSL-FO or CSS, how to calculate tab-stops?
>
>
> In addition you will notice, that application differ in the way they use
> margin, border and padding. All use the left edge of the column content
> area as reference. But Word and TextMaker take the margin as distance to
> the paragraph content area. Calligra and LibreOffice uses it as distance
> to the border.
>
> In my illustrations from the last mail, I have used LibreOffice's way,
> because I think it is correct. It corresponds to the box-model of CSS.
>
> Kind regards
> Regina
>
>
>
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