Add tts:background{Clip,Extent,Origin}. #177
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…itioning} area] defines (as TBDs).
…ectangles (formerly areas). Introduce citations to these definitions. Change other uses of "positioning area" to "positioning rectangle" as appropriate. Update schema archives.
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| <td><emph>Percentages:</emph></td> | ||
| <td>relative to width and height of the applicable <loc href="#terms-background-positioning-rectangle">background positioning rectangle</loc></td> |
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This seems a bit confusing - isn't backgroundExtent specifying the background positioning rectangle?
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No. It is specifying the extent (size) of the image with respect to the background positioning rectangle. The default 'auto' uses the intrinsic size, but the author may override that, e.g., by specifying cover or contain or two measures. See CSS3 B&B L3 background-size property for more info.
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Oh, then the name backgroundExtent seems to be confusing. Why not call it imageExtent?
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Let me give this some thought, since we might need the same attribute be used with tt:image.
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Notes from f2f meeting 2016-09-19:
Proposal is to merge this and raise issues for each of the above. |
Add tts:background{Clip,Extent,Origin}.
Also add [background {painting,positioning} area] defines (as TBDs).
See issue #175.