[xep-support] Understanding area rectangles

[W. Eliot Kimber]

David Tolpin wrote:

> calculate indents as sums of border+padding.

I now understand better what David is saying here: if *-indent is 
explicitly specified, it overrides any inherited or calculated margin 
value. Also, the positions of the border and padding rectangles are 
relative to the position of the content rectangle of the block they are 
on, not the content rectangle of the reference area that contains the 
block they are on.

Thus, if you specific start-indent of 24pt, border-start-width of 4pt, 
and padding-start of 8pt, the start edge of the border will be 12 pts 
end-ward from the content rectangle of the containg reference area 
(24-4-8), rather than the effective padding width being 20pts.

I haven't decided yet whether its better practice to specify 
margin-left="0pt" or explicit start-indent="12pt", although I thinking 
that specifying a zero margin is the more flexible approach in general 
(because it allows border and padding to govern and determine indent).

Cheers,

E.
-- 
W. Eliot Kimber, eliot at isogen.com
Consultant, ISOGEN International

1016 La Posada Dr., Suite 240
Austin, TX  78752 Phone: 512.656.4139

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