On Wed, 14 Sep 2005 01:33 am, Finn Bock wrote: > [Manuel] > > > Any way, back to the topic at hand. Lets assume the following fo: > > > > <fo:block><fo:inline font-size=10pt">some 10pt text<fo:inline > > font-size="12pt">some 12 pt text</fo:inline>more 10pt > > text</fo:inline></fo:block> > > > > In this case the line-height everywhere is normal which is > > equivalent to 1.2em. The innermost fo:inline will return an area > > with a bpd of 12pt. However, the outer fo:inline has a smaller font > > and as the line-height spec on an inline element is binding it can > > only return areas of 10pt bpd therefore "cutting off" part of the > > inner fo:inline. So our area tree (assuming it all fits on one > > line) in fop terminology would look like: > > > > <linearea bpd="10000" space-before="1200" space-after="1200"> > > <inlinearea bpd="10000"> > > <textarea font-size="10pt">some 10pt text</textarea> > > <inlinearea bpd="12000"> > > <textarea font-size="12pt">some 12pt text</textarea> > > </inlinearea> > > <textarea font-size="10pt">more 10pt text</textarea> > > </inlinearea> > > <linearea> > > Right, except the 10000 and 12000 values should be text-altitude + > text-depth: > Yes, of course - minor simplification on my part :-).
> <linearea bpd="11100" space-before="1650" space-after="1650"> > <inlinearea bpd="9250"> > <textarea font-size="10pt">some 10pt text</textarea> > <inlinearea bpd="11100"> > <textarea font-size="12pt">some 12pt text</textarea> > </inlinearea> > <textarea font-size="10pt">more 10pt text</textarea> > </inlinearea> > <linearea> > > All the inline areas also have a line-height trait of 12000 but that > is only used when lls="line-height" [4.6]. Hmm, the line-height property would be "normal" everywhere which equates to "1.2" that means the trait would be "14400" for areas generated from fo elements with a font-size of "12pt" and "12000" for areas generated from fo elements with a font-size of "10pt". But as you said it doesn't matter really unless lss is "line-height". > > > In my interpretation as there is no explicit line-height spec on > > the inlines we get an area tree like: > > > > <linearea bpd="12000" space-before="1200" space-after="1200"> > > <inlinearea bpd="12000"> > > <textarea font-size="10pt">some 10pt text</textarea> > > <inlinearea bpd="12000"> > > <textarea font-size="12pt">some 12pt text</textarea> > > </inlinearea> > > <textarea font-size="10pt">more 10pt text</textarea> > > </inlinearea> > > <linearea> > > > > I have no idea whose right or wrong here or even which > > interpretation makes more sense. > > From [4.6]: > """An inline-area with inline-area children has a content-rectangle > which extends from its dominant baseline (see [4.2.6 Font Baseline > Tables]) by its text-depth in the block-progression-direction, and in > the opposite direction by its text-altitude;""" > > So it appears that the bpd of an inline depends on the inline's font > and not on the line-height property or the inline's children. > > Does it make sense? > Yes it does. Does it also means the bpd doesn't "bubble up" in the case of nested inlines? So if we expand on the example of the nested inline above: <fo:block><fo:inline font-size=10pt">some 10pt text<fo:inline font-size="14pt">some 14 pt text</fo:inline>more 10pt text</fo:inline></fo:block> Does the line-area generated from that have a bpd corresponding to a 12pt font or 14 pt font (spec [4.5] for lss="max-height": "block-progression-direction is the minimum required to enclose both the nominal-requested-line-rectangle and the allocation-rectangles of all the inline-areas stacked within the line-area")? The nominal-requested-line-rectangle corresponds to a 12pt font. But is the area generated from the nested inline an "inline-area stacked within the line-area" or not? Or is only the inline area generated from the outer inline an "inline-area stacked within the line-area" as the inner inline area is contained within the outer inline area and therefore not really stacked. If the second interpretation is correct the line-area would have a bpd corresponding to a 12pt font and only unnesting like: <fo:block><fo:inline font-size=10pt">some 10pt text</fo:inline><fo:inline font-size="14pt">some 14 pt text</fo:inline><fo:inline font-size=10pt">more 10pt text</fo:inline></fo:block> would give us a line-area with a bpd corresponding to a 14pt font. > > I have no idea what the spec means by [7.15.4]: > > """If the property is set on an inline-level element, it specifies > the exact height of each box generated by the element.""" > > because both "set" and "box" is undefined by the rest of the spec. > The text is copied from CSS where it perhaps makes sense. > OK, I agree its hard to make sense out of this. So lets just ignore this then for the time being. > regards, > finn Cheers Manuel
