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Request a Feature Report a Bug
Unplanned
Last Updated: 16 Jun 2023 09:59 by ADMIN
David
Created on: 12 Jun 2023 15:28
Category: PDFViewer
Type: Bug Report
0
PDF Viewer: ToggleLayoutMode also sets Width to Maximum

New PdfViewer is great, but has this undesired side effect:

ToggleLayoutModeCommand also sets Page Width to Maximum, at least in Windows.

If by design, there needs to be a workaround when not desired. Otherwise please retain current zoom level during the toggle.

Thank you.

David Pressman

1 comment
ADMIN
Didi
Posted on: 16 Jun 2023 09:59

Hello David,

We have reviewed the case and I changed the status to this item to Unplanned.

As a workaround: 
Execute a logic that keeps the zoom level, then set this logic to the ToggleLayoutMode command: 

this.pdfViewer.ToggleLayoutModeCommand = new Command(this.ExecuteMyCommand);

public void ExecuteMyCommand()
        {
            double zoom = this.pdfViewer.ZoomLevel;
            this.pdfViewer.LayoutMode = this.pdfViewer.LayoutMode == LayoutMode.ContinuousScroll ? LayoutMode.SinglePage : LayoutMode.ContinuousScroll;

            this.Dispatcher.DispatchDelayed(TimeSpan.FromMilliseconds(50), () => this.pdfViewer.ZoomToLevel(zoom));
        }

Note that you may need to change the delay. I have used 50ms in my case but for your scenario less or more may be required. 

Regards,
Didi
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