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Merge pull request #14225 from Snuffleupagus/render-better-holes-check

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Avoid doing unnecessary checks, when pre-rendering page layouts with "holes" (PR 14131 follow-up)
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Tim van der Meij 2021-11-03 19:48:37 +01:00 committed by GitHub
commit 2ac6c939a5
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1 changed files with 4 additions and 4 deletions
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web/pdf_rendering_queue.js
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@ -115,13 +115,13 @@ class PDFRenderingQueue {
* 2. if last scrolled down, the page after the visible pages, or * 2. if last scrolled down, the page after the visible pages, or
* if last scrolled up, the page before the visible pages * if last scrolled up, the page before the visible pages
*/ */
const visibleViews = visible.views; const visibleViews = visible.views,
numVisible = visibleViews.length;
const numVisible = visibleViews.length;
if (numVisible === 0) { if (numVisible === 0) {
return null; return null;
} }
for (let i = 0; i < numVisible; ++i) { for (let i = 0; i < numVisible; i++) {
const view = visibleViews[i].view; const view = visibleViews[i].view;
if (!this.isViewFinished(view)) { if (!this.isViewFinished(view)) {
return view; return view;
@ -132,7 +132,7 @@ class PDFRenderingQueue {
// All the visible views have rendered; try to handle any "holes" in the // All the visible views have rendered; try to handle any "holes" in the
// page layout (can happen e.g. with spreadModes at higher zoom levels). // page layout (can happen e.g. with spreadModes at higher zoom levels).
if (lastId - firstId > 1) { if (lastId - firstId + 1 > numVisible) {
for (let i = 1, ii = lastId - firstId; i < ii; i++) { for (let i = 1, ii = lastId - firstId; i < ii; i++) {
const holeId = scrolledDown ? firstId + i : lastId - i, const holeId = scrolledDown ? firstId + i : lastId - i,
holeView = views[holeId - 1]; holeView = views[holeId - 1];