Re: #backgroundColor + <image>

I should clarify. I think it is a bad idea to insist on combination feature
definitions as a general rule, even when the combination comes into play in
a new version that was not present in a previous version. In particular, I
think if an implementation claims support for #backgroundColor (already)
and add a claim for support for #image, then it should implement support
for #backgroundColor on image as a natural interpretation of the
specification language.

What I hear (behind your question) is a desire to not support background
color on an image (and to have a feature to control this). This sounds like
a new use case and should be justified by making a business case for not
supporting background color on image when an implementation otherwise
claims support for #backgroundColor and #image.

Have you made such a business case for non-support?


On Tue, Feb 5, 2019 at 8:46 PM Glenn Adams <glenn@skynav.com> wrote:

> Feel free to file an issue. As for myself, I'm ok with the current state
> of affairs.
>
> On Tue, Feb 5, 2019 at 8:32 PM Pierre-Anthony Lemieux <pal@sandflow.com>
> wrote:
>
>> Hi Glenn,
>>
>> This would conflict with the objective of not expanding the conformance
>> requirements of individual features defined in TTML1.
>>
>> For instance, #padding remains unchanged from TTML1,
>> while #padding-version-2 includes both #padding and padding capabilities
>> introduced in TTML2.
>>
>> Best,
>>
>> -- Pierre
>>
>> On Tue, Feb 5, 2019 at 5:22 PM Glenn Adams <glenn@skynav.com> wrote:
>>
>>> My reading says it is #backgroundColor, which, as written (now and in
>>> TTML1), did not distinguish which elements it applied to, so, by virtue of
>>> the upgraded *applies to* in TTML2 for tts:backgroundColor, it would
>>> effectively apply (now) to image as well.
>>>
>>> On Tue, Feb 5, 2019 at 1:50 PM Pierre-Anthony Lemieux <pal@sandflow.com>
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> Which TTML2 feature covers tts:backgroundColor when applied to <image>?
>>>>
>>>> Perhaps it is included in #image?
>>>>
>>>> Best,
>>>>
>>>> -- Pierre
>>>>
>>>