That's only for setting the transparency, and/or choosing to show the text as a watermark. No tilting provided.
That might do it, but "laborious" only
begins to describe it. You'd have to set up a separate call to the filter for each line of text, each with its own offset coordinates. And I'm not sure you could have the filters apply to only one image - these kinds of filters are normally applied to every image that gets scaled.
The last option is to add the text directly to the image using a markup application.
This. Plenty of image-processing apps provide this kind of functionality. The tricky part of it is that the text would be "baked in" to the image, and might shrink a lot when the image is scaled for the album. You'd really have to scale the images in the third-party app, apply the text, then tell jAlbum to use the original, rather than scaling. Tough to control, otherwise.
