Jonas Jenwald bc8523ac29 Introduce a "thumbnailrendered" event to simplify cleanup after thumbnail rendering (PR 12613 follow-up)
The way that the cleanup was implemented in PR 12613 has always bothered me slightly, since the `isPageCached`-method that I introduced there always felt quite out-of-place in the `IPDFLinkService`-implementations.
By introducing a new "thumbnailrendered" event, similar to the existing "pagerendered" one, we're able to move the cleanup handling into the `PDFViewer`-class instead.
2023-05-26 15:30:22 +02:00
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