Dual PNG icons

[motorollin]

How do I make Dual PNG icons? I downloaded the AmiKit icon update and renamed one of the icons with a .png extension, but it just displayed as a standard image with no second state, so I can't figure out where the second image is stored.

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moto

[Piru]

The files are joined together. Yes, it's sucky.

[motorollin]

Oh I see, thanks. So can I just use the AmigaDOS "join" command to join two PNG files together?

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moto

[Piru]

Apparently. I've never seen such icons, but that's what I hear.

The problem obviously is that you can't easily split the files back to two pngs (well it's relatively easy to write a tool for that, but still it sucks eggs to use some random invented thing for multiple state icons. Personally I would have used MNG or some other standard fileformat).

[motorollin]

True, I didn't think about what you would do if you wanted to split the files out again. I'll try joining up some PNGs anyway and see what happens.

Thanks

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moto

[AmiKit]

True, I didn't think about what you would do if you wanted to split the files out again.

Better keep the original images somewhere in case you want to modify them later.

[quenthal]

Is it possible to have (dual) png icons ghosted when they represent hidden files?

[Fab12]

Ghosting icon-less files has be done by the desktop (workbench, magellan, scalos or ambient). Ambient for MorphOS can do that optionally.

[Georg]

The problem obviously is that you can't easily split the files back to two pngs

Maybe, but you can even less easily write a routine which safely handles unknown attributes in the icOn chunk. String attributes are embedded in the taglist instead of pointers/offsets and if for an unknown attribute (added/invented in future) you don't know how to decide whether it's a string attribute or not, you are screwed.

[quenthal]

Fab12 wrote:
Ghosting icon-less files has be done by the desktop (workbench, magellan, scalos or ambient). Ambient for MorphOS can do that optionally.

Hmm... can Afa_OS do that?

[klesterjr]

Hmm... can Afa_OS do that?

Yes.  

Of course, so can PowerIcons.

[quenthal]

klesterjr wrote:

Hmm... can Afa_OS do that?

Yes.  

Of course, so can PowerIcons.

Hmm.. I think I'm now one step closer to start using Afa_Os. :-) (One of the reasons why I'm still using IconBeFast/PowerIcons was this)
I tried short while ago Afa_OS, but files without .infos were not ghosted/partially transparent. I presume there is some switch in the prefs for this - maybe I gave up too hastily. If I remember correctly, ghosting hidden files was default setting with Powericons so this might be the reason for difference.