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Merge pull request #19622 from nicolo-ribaudo/zoom-detail-view-constant-redraw

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Do not constantly render the detail canvas on zoom (bug 1952496)
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Jonas Jenwald 2025-03-07 13:56:13 +01:00 • committed by GitHub
commit cef4fcf025
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1 changed files with 11 additions and 7 deletions
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18
web/pdf_viewer.js
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@ -1868,14 +1868,18 @@ class PDFViewer {
this._spreadMode !== SpreadMode.NONE &&
this._scrollMode !== ScrollMode.HORIZONTAL;
// If we are scrolling and the rendering of a detail view was just
// cancelled, it's because the user is scrolling too quickly and so
// we constantly need to re-render a different area.
// Don't attempt to re-render it: this will be done once the user
// stops scrolling.
const ignoreDetailViews =
this.#scrollTimeoutId !== null &&
visiblePages.views.some(page => page.detailView?.renderingCancelled);
// If we are zooming, do not re-render the detail views. Re-renders on
// zoom happen with a delay, and once the rendering happens it will also
// trigger rendering of the detail views.
this.#scaleTimeoutId !== null ||
// If we are scrolling and the rendering of a detail view was just
// cancelled, it's because the user is scrolling too quickly and so
// we constantly need to re-render a different area.
// Don't attempt to re-render it: this will be done once the user
// stops scrolling.
(this.#scrollTimeoutId !== null &&
visiblePages.views.some(page => page.detailView?.renderingCancelled));
const pageView = this.renderingQueue.getHighestPriority(
visiblePages,