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Published 20 hours ago • verified publisher icon telerik

A PDF file shows upside down in dpl case

Open zdravkov opened this issue 4 years ago • 3 comments

Bug report

A specific PDF file (example can be found in ticket : 1493640) shows upside down in DPL case

Reproduction of the problem

Run the DPL processing demo locally and replace the file with the one provided in the ticket

Current behavior

The file is shown upside down

Expected/desired behavior

The file should not be rendered upside down

Environment

  • Kendo UI version: 2020.3.1021

zdravkov avatar Nov 04 '20 14:11 zdravkov

Have you been able to fix this problem? image

SyntaxEvg avatar Aug 13 '22 05:08 SyntaxEvg

The issue in the sample pdf file provided in ticket 1493640 seems to be related to an edge case - there is a negative horizontal scale, negative font size and negative position applied to the TextFragments in the PDF file. However, the horizontal scale is not exposed in the TextRenderingContext and therefore not serialized, resulting in an incorrect text rendering matrix.

An internal issue is logged, to expose the HorizontalScale property and once implemented the report will be revisited.

aleksandarevangelatov avatar Dec 05 '23 08:12 aleksandarevangelatov

It seems to be related to this issue that is already in development: PdfProcessing: Text rendering is not correct in scenarios with negative font and/or negative horizontal scaling

velikovmartin avatar Mar 19 '24 11:03 velikovmartin