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[GeckoView] Ignore the pageLayout, from the PDF document, to prevent issues

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First of all, given the screen-sizes of most mobile phones using Spread modes is unlikely to be useful.
Secondly, and more importantly, since there's (currently) no UI available for the user to override a PDF document-specified Spread mode this would result in a bad UX otherwise.

Also, removes an outdated comment from the `apiPageLayoutToViewerModes` helper function.
This commit is contained in:
Jonas Jenwald 2022-12-16 11:59:22 +01:00
parent b518d93b45
commit 0289038961
3 changed files with 11 additions and 5 deletions
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10
web/pdf_scripting_manager.js
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@ -265,13 +265,19 @@ class PDFScriptingManager {
case "error":
console.error(value);
break;
case "layout":
if (isInPresentationMode) {
case "layout": {
// NOTE: Always ignore the pageLayout in GeckoView since there's
// no UI available to change Scroll/Spread modes for the user.
if (
(typeof PDFJSDev !== "undefined" && PDFJSDev.test("GECKOVIEW")) ||
isInPresentationMode
) {
return;
}
const modes = apiPageLayoutToViewerModes(value);
this._pdfViewer.spreadMode = modes.spreadMode;
break;
}
case "page-num":
this._pdfViewer.currentPageNumber = value + 1;
break;