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Reduce unnecessary duplication in PDFRenderingQueue.getHighestPriority

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This commit is contained in:
Jonas Jenwald 2021-10-02 11:24:29 +02:00
parent 284d259054
commit fb6c807ba2
1 changed files with 9 additions and 15 deletions
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24
web/pdf_rendering_queue.js
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@ -126,21 +126,15 @@ class PDFRenderingQueue {
}
}
// All the visible views have rendered; try to render next/previous pages.
if (scrolledDown) {
const nextPageIndex = visible.last.id;
// IDs start at 1, so no need to add 1.
if (views[nextPageIndex] && !this.isViewFinished(views[nextPageIndex])) {
return views[nextPageIndex];
}
} else {
const previousPageIndex = visible.first.id - 2;
if (
views[previousPageIndex] &&
!this.isViewFinished(views[previousPageIndex])
) {
return views[previousPageIndex];
}
// All the visible views have rendered; try to render next/previous page.
// (IDs start at 1, so no need to add 1 when `scrolledDown === true`.)
const preRenderIndex = scrolledDown
? visible.last.id
: visible.first.id - 2;
const preRenderView = views[preRenderIndex];
if (preRenderView && !this.isViewFinished(preRenderView)) {
return preRenderView;
}
// Everything that needs to be rendered has been.
return null;