[TYPO3-core] RFC #14602: feature: PNG with alpha transparency

[Xavier Perseguers]

Hi,

> Dmitry Dulepov wrote:
>> Jigal van Hemert wrote:
>>> alphaChannel = 1
>>
>> When I saw "alphaChannel" I immediately wanted to replace it with
>> "transparency" because it is more obvious to the user while
>> "alphaChannel"
>> is more technical.
>>
>> Would it be better to call such properties in a more "user" way? I guess
>> not every TS writer knows what is "alphaChannel"...
>
> Gif and PNG-8 images also have "transparency", even if it's only a
> colour which is made transparent when displaying the image.
> The PNG images I'm trying to create have an extra 8-bit channel for
> transparency.
>
> We already have transparentBackground and transparentColor which are
> used for creating the Gif/PNG-8 "transparency".
>
> If there is a name which can describe the transparent channel and is
> still understandable by integrators, I'll use it!

In fact, "alpha channel" is the official naming in image editing 
softwares...

Xavier