But how do applications like Fireworks, Photoshop and others read this
information?
I guess they go by another name, chunks?

Whatever they are called, this is basically what I need. Maybe these
applications infer them from other information but I can deal with that if I
can know where to find them. The information they seem to have about the
"layers" (or objects or whatever) seems basically to be: name, coordinates
and size, color and a few others. This is pretty much all I really need.

I made a screen shot from Fireworks of what I mean:
http://www.strangeelement.com/PNGLayers.png. In it, Fireworks lists layers
(likely a proxy for something else that they simply call layers but aren't
really, information I would use if I can get it), one of which contains 4
objects with a name, likely an available coordinate, size and fill color.


Thanks!
Rich.


On Tue, Oct 21, 2008 at 12:04 AM, Anthony Thyssen
<[EMAIL PROTECTED]>wrote:

> "=?ISO-8859-1?Q?Richard_Vall=E9e?=" on  wrote...
> | I'm trying to find a way, either from a linux command line application,
> or
> | through something accessible from PHP (MagickWand?) that would read a PNG
> | file and return the layers information of the file.
> |
> | Maybe there are different ways to name so to be specific, by layers I
> mean
> | basically the same info I would get by opening the file with Fireworks
> and
> | checking the layers window.
> |
> | Is this something ImageMagick can do? If not is there a way, even through
> | libpng? I'd rather not but if necessary I have no problem writing a small
> C
> | application that would do this, given I know how to proceed.
> |
> A PNG file does not have multiple layers.
>
> It does have offset information for layers but that is the extent of it.
>
>
>  Anthony Thyssen ( System Programmer )    <[EMAIL PROTECTED]>
>
>  -----------------------------------------------------------------------------
>    I have a Dragon here, and I am not afraid to use it!
>                                    -- Donkey, "Shrek" the movie
>
>  -----------------------------------------------------------------------------
>     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/
>
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