Why not provide the hotspot information as a separate, editable file? That means that people don't have to go poking through some obscure PNG chunks to find and edit data they're looking for.
On Tue, Jul 15, 2014 at 2:09 AM, John Emmas <j...@creativepost.co.uk> wrote: > On 14/07/2014 13:35, Paul Davis wrote: > >> does anyone know of any good (i.e. non-hacky) ways to define/provide >> cursor icon hotspots with PNG files, the way one can with various other >> image formats more intended for this purpose? >> >> > Hi Paul, > > I'm not massively familiar with PNG but according to its spec, the > ancillary chunk contains a couple of 'text' fields which can be used for > storing name/value pairs. It would essentially be private data of course > (i.e. non-portable) but would that help you at all? (if the data isn't > present you simply assume 0,0 as the hotspot). > > According to Wikipedia there have been several extensions to the original > PNG format but AFAICT none of them seem to offer this, which is quite > weird... > > John > > _______________________________________________ > gtk-list mailing list > gtk-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gtk-list > -- Jasper
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