Jonas Jenwald 72da2aa166 Ignore globally cached images in PartialEvaluator.getTextContent (PR 11930 follow-up)
Given that we'll only cache `/XObject`s of the `Image`-type globally, we can utilize that in `PartialEvaluator.getTextContent` as well. This way, in cases such as e.g. issue 12098, we can avoid having to fetch/parse `/XObject`s that we already know to be `Image`s. This is helpful, since `Stream`s are not cached on the `XRef` instance (given their potential size) and the lookup can thus be somewhat expensive in general.

Also, skip a redundant `RefSetCache.has` check in the `GlobalImageCache.getData` method.
2021-01-28 10:19:26 +01:00
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