I read all these threads I could find about InDesign and EPS files and that you can only get PPI value using preflight.
However I would like to ask whether you think this concept is viable:
How about using a class based on IVisitorHelper to obtain some value from the Preflight info panel? In this case the effective PPI value for an EPS image.
I thought about adding an add-in in the resource file to the kImageResolutionRuleBoss, but it appears that it does not support the IVisitorHelper interface.
I'm afraid that EPS is out-of-date and is not recommended. It doesn't support transparency nor support color management well. If the file is vector from Illustrator, save as an AI file.
There is no reason to save as a Photoshop EPS file that can be accomplished better with another format, usually Photoshop PSD or Photoshop PDF (for vectors).
You can save an image out of Photoshop as an EPS and unlike other image formats the links panel doesn't return resolution info. Even with EPS, PDF or AI files from Illustrator, InDesign's preflight will check images inside of the file and return resolution info. I think the reason the Links panel doesn't deal with res in EPS/AI/PDF files is they could potentially have hundreds of images inside at varying resolutions
How about using a class based on IVisitorHelper to obtain some value from the Preflight info panel?
Are you trying to script the preflighting? Have you looked at PreflightProcess in the InDesign javascript API? aggregatedResults returns an array of error details, so you should be able to build a temporary rule, get the error info details, and delete the rule.
Obviously there's no reason to use EPS files anymore and a few reasons to avoid them. So a better script might be to change the format of placed EPS images and then you would have the res info in the links panel.
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